Information
-
Patent Grant
-
6790047
-
Patent Number
6,790,047
-
Date Filed
Tuesday, July 15, 200321 years ago
-
Date Issued
Tuesday, September 14, 200420 years ago
-
Inventors
-
Original Assignees
-
Examiners
- Luebke; Renee
- Hammond; Briggitte R.
Agents
-
CPC
-
US Classifications
Field of Search
US
- 439 188
- 439 62
- 439 63
- 439 944
- 200 5109
- 200 504
- 200 511
- 200 512
-
International Classifications
-
Abstract
A coaxial connector with a switch can be used even when an internal ANT and an RF circuit on a printed wiring board are inversely arranged by mounting the connector through the reverse mounting. The connector is mounted on a printed wiring board by engaging a notch portion in an edge thereof and comprises a normally closed terminal, a common terminal, an insulator, a shell, and a housing. A pair of connecting portions of the shell are horizontally symmetric with respect to a vertical plane passing the center or nearly the center of the housing. The connecting portions of the normally closed terminal and the common terminal are also horizontally symmetric with respect to the vertical plane. A top surface and a bottom surface of each of the connecting portions are vertically symmetric with respect to a horizontal plane passing the centers or nearly the centers of the connecting portions.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a coaxial connector with a switch, such as a receptacle type coaxial connector with a switch. The coaxial connector comprises a normally closed terminal and a common terminal whose respective contact portions contact and move apart from each other in association with the removal and insertion of a mating connector, such as a plug type coaxial connector, as a central conductor and a shell as an exterior conductor. The coaxial connector is mounted on a printed wiring board by soldering connecting portions of the normally closed terminal, the common terminal, and the shell to their respective corresponding lands on the printed wiring board.
2. Description of the Related Art
A common terminal is a type of terminal that can be alternately connected to one or more separate terminals.
A normally closed terminal is a type of terminal that, in its normal, default state, remains connected to another terminal until the normally closed terminal is disconnected from the other terminal, for example, by releasing a switch.
A conventional coaxial connector
300
,
400
with a switch, as shown in FIG.
21
(
b
) and FIG.
22
(
b
), includes a common terminal and a normally closed terminal. When the mating connector
500
is disconnected from the conventional coaxial connector
300
,
400
, the normally closed terminal is in the normal, default state, and the common terminal and the normally closed terminal are connected by the switch. Upon the insertion of the mating connector
500
into the conventional coaxial connector
300
,
400
, the switch is released, thereby disconnecting the common terminal from the normally closed terminal.
Conventionally, a coaxial connector with a switch of this type is formed as a right angle type, in which each of the connecting portions of the normally closed terminal, the common terminal, and the shell is formed into a vertically asymmetric shape. For this reason, for a printed wiring board having a reversed layout, such as a circuit (or element) to be connected to the common terminal and a circuit (or element) to be connected to the normally closed terminal on the printed wiring board, it is necessary to prepare a separate coaxial connector with a switch having the connecting portion of the common terminal and the connecting portion of the normally closed terminal arranged inversely.
For example, given a coaxial connector
300
with a switch as the connector to be mounted in a case where an internal antenna (ANT)
101
and an RF (high-frequency) circuit
102
are laid out on a printed wiring board
100
as shown in FIG.
21
(
b
) and FIG.
23
(
c
), and given a coaxial connector
400
with a switch as the connector to be mounted in a case where an internal ANT
201
and an RF circuit
202
are laid out inversely on a printed wiring board
200
as shown in FIG.
22
(
b
) and FIG.
24
(
c
), then the arrangement of a connecting portion
301
of the normally closed terminal and a connecting portion
302
of the common terminal of the coaxial connector
300
with a switch is reversed with respect to the arrangement of a connecting portion
401
of the normally closed terminal and a connecting portion
402
of the common terminal of the coaxial connector
400
with a switch as shown in FIG.
23
(
b
) and FIG.
24
(
b
), respectively.
In the case shown in FIG.
21
(
b
) and FIG.
23
(
c
), the connecting portion
301
of the normally closed terminal and the connecting portion
302
of the common terminal of the coaxial connector
300
with a switch are placed respectively on lands
103
and
104
for the use of signals formed on the printed wiring board
100
, and connecting portions
303
and
303
of the shell of the coaxial connector
300
with a switch are placed respectively on lands
105
and
105
for the use of grounding formed on the printed wiring board
100
. Each connecting portion is connected to the corresponding land through soldering (not shown). The lands
103
and
104
are connected to the internal ANT
101
and the RF circuit
102
through wiring patterns
106
and
107
, respectively.
As shown in FIG.
21
(
a
) and FIG.
21
(
b
), when a mating connector
500
is not inserted, a contact portion of the common terminal and a contact portion of the normally closed terminal of the coaxial connector
300
with a switch come in elastic contact with each other, whereby the internal ANT
101
is electrically connected to the RF circuit
102
.
When the mating connector
500
is inserted, the contact between the contact portions of the normally closed terminal and the common terminal of the coaxial connector
300
with a switch is released by a contact portion of a normally open terminal (for example, a center pin)
501
of the mating connector
500
, and the contact portion of the normally open terminal
501
is brought into elastic contact with the contact portion of the common terminal of the coaxial connector
300
with a switch, whereby an external ANT (not shown) connected to the end portion of a coaxial cable
600
is electrically connected to the RF circuit
102
.
In short, the ANT to be connected to the RF circuit
102
is switched from the internal ANT
101
to the external ANT. When the mating connector
500
is inserted, the contact portion of a shell (grounded terminal)
502
of the mating connector
500
comes in elastic contact with the contact portion of the shell of the coaxial connector
300
with a switch, whereby an electrical connection is established there between.
In the case shown in FIG.
22
(
b
) and FIG.
24
(
c
), the connecting portion
402
of the common terminal and the connecting portion
401
of the normally closed terminal of the coaxial connector
400
with a switch are placed respectively on lands
204
and
203
for the use of signals formed on the printed wiring board
200
, and connecting portion
403
and
403
of the shell of the coaxial connector
400
with a switch are placed respectively on lands
205
and
205
for the use of grounding formed on the printed wiring board
200
. Each connecting portion is connected to the corresponding land through soldering. The lands
204
and
203
are connected to the RF circuit
202
and the internal ANT
201
through wiring patterns
207
and
206
, respectively.
As shown in FIG.
22
(
a
) and FIG.
22
(
b
), when the mating connector
500
is not inserted, as with the case of FIG.
21
(
a
) and FIG.
21
(
b
), the internal ANT
201
is electrically connected to the RF circuit
202
. When the mating connector
500
is inserted, as with the case of FIG.
21
(
a
) and FIG.
21
(
b
), the ANT to be electrically connected to the RF circuit
202
is switched from the internal ANT
201
to the external ANT.
In the conventional examples shown in FIG.
21
(
a
) through FIG.
24
(
c
), however, the coaxial connectors
300
and
400
with switches are formed as a right angle type, and the connecting portions
301
and
302
and the connecting portions
401
and
402
of the respective terminals and the connecting portions
303
and
303
and the connecting portions
403
and
403
of the respective shells are formed into vertically asymmetric shapes. Hence, onto the printed wiring board
100
on which the internal ANT
101
and the RF circuit
102
are laid out as shown in FIG.
23
(
c
), of the coaxial connectors
300
and
400
with switches, only the coaxial connector
300
with a switch is allowed to mount. Conversely, onto the printed wiring board
200
on which the internal ANT
201
and the RF circuit
202
are laid out as shown in FIG.
24
(
c
), only the other coaxial connector
400
with a switch is allowed to mount.
As has been described, when the internal ANT and the RF circuit laid out on the printed wiring board are arranged inversely, it is necessary to prepare different coaxial connectors with switches that conform to the respective printed wiring boards. This makes it impossible to use a coaxial connector with a switch commonly, which poses a problem that the manufacturing facilities are increased and so are the costs.
SUMMARY OF THE INVENTION
The invention was devised in view of the foregoing problems, and therefore, has an object to provide a coaxial connector with a switch that can be used commonly even when the internal ANT and the RF circuit laid out on the printed wiring board are arranged inversely, and therefore, can save the costs by suppressing an increase of the manufacturing facilities.
An aspect of the invention provides a coaxial connector (
10
) with a switch, which includes: a normally closed terminal (
3
) and a common terminal (
4
) whose respective contact portions (
31
)(
44
) come in contact with and move apart from each other in association with removal and insertion of a mating connector (
9
); an insulator (
5
) for holding the normally closed terminal (
3
) and the common terminal (
4
); and a shell (
6
) for holding the insulator (
5
) from outside, a connecting portion (
33
) of the normally closed terminal (
3
), a connecting portion (
43
) of the common terminal (
4
), and a pair of connecting portions (
63
)(
63
) of the shell (
6
) being protruded in a horizontal direction to be placed on corresponding lands (
13
,
23
)(
14
,
24
)(
15
,
25
)(
15
,
25
) formed on a surface of a printed wiring board (
1
,
2
) near an edge thereof, the coaxial connector (
10
) with a switch being mounted onto the edge of the printed wiring board (
1
,
2
) through soldering of each connecting portion, wherein: the pair of connecting portions (
63
)(
63
) of the shell (
6
) are placed at horizontally symmetric positions with respect to a vertical plane (
65
) passing a center or nearly the center of the shell (
6
); the connecting portion (
33
) of the normally closed terminal (
3
) and the connecting portion (
43
) of the common terminal (
4
) are placed at horizontally symmetric positions with respect to the vertical plane (
65
); and a top surface and a bottom surface of each of the connecting portions (
63
)(
63
)(
33
)(
43
) are formed into vertically symmetric shapes with respect to a horizontal plane (
66
) passing centers or nearly the centers of the connecting portions (
63
)(
63
)(
33
)(
43
).
According to the above arrangement, the pair of connecting portions (
63
)(
63
) of the shell (
6
) are placed at horizontally symmetric positions with respect to the vertical plane (
65
) passing the center or nearly the center of the shell (
6
); the connecting portion (
33
) of the normally closed terminal (
3
) and the connecting portion (
43
) of the common terminal (
4
) are placed at horizontally symmetric positions with respect to the vertical plane (
65
); and the top surface and the bottom surface of each of the connecting portions (
63
)(
63
)(
33
)(
43
) are formed into vertically symmetric shapes with respect to the horizontal plane (
66
) passing the centers or nearly the centers of the connecting portions (
63
)(
63
)(
33
)(
43
). Consequently, in a case where the lands (
13
,
23
)(
14
,
24
)(
15
,
25
)(
15
,
25
) formed on the surface of the printed wiring board (
1
,
2
) near the edge thereof are arranged inversely, the coaxial connector (
10
) with a switch can be mounted onto the edge of the printed wiring board (
1
,
2
) through the reverse mounting by merely reversing the coaxial connector (
10
) with a switch.
In other words, in a case where the arrangement of two circuits or elements (including a case where one of them is an element or both are elements) laid out on the printed wiring board (
1
,
2
) is reversed, for example, when the layout of an internal ANT and an RF circuit is arranged inversely, the same coaxial connector (
10
) with a switch can be used through the reverse mounting, which makes it possible to use the coaxial connector (
10
) with a switch commonly.
Another aspect of the invention provides the coaxial connector (
10
) with a switch according to the aspect of the invention described above, wherein a horizontal plane passing the center or nearly the center of the shell (
6
) is given as the horizontal plane (
66
), so that the heights of the coaxial connector (
10
) with a switch from the main surface and from the back surface of the printed wiring board (
1
,
2
) are made almost equal when mounted.
Another aspect of the invention provides the coaxial connector (
10
) with a switch according to an aspect of the invention described above, wherein: the shell (
6
) includes a main body portion (
62
) allowed to engage with two kinds of notch portions (
11
)(
21
) having different shapes formed by making a notch in the edge of the printed wiring board (
1
,
2
); the main body portion (
62
) includes an upper main body portion (
62
a
) and a lower main body portion (
62
b
) partitioned vertically at the horizontal plane (
66
); and one of the upper main body portion (
62
a
) and the lower main body portion (
62
b
) is formed into a shape allowed to engage with only one of the two kinds of notch portions (
11
)(
21
), and the other is formed into a shape allowed to engage with only the other one of the two kinds of notch portions (
11
)(
21
), so that erroneous mounting can be prevented while reducing the protrusion length from the edge of the printed wiring board (
1
,
2
) when mounted.
Another aspect of the invention provides the coaxial connector (
10
) with a switch according to an aspect of the invention described above, wherein: one of the two kinds of notch portions (
11
)(
21
) is formed to have an opening width of a constant value V from an opening side to an inner side, and the other is formed to have two steps having an opening width V1 (V1>V) on the opening side and an opening width V2 (V2<V) on the inner side; the lower main body portion (
62
b
) is formed to have a breadth of a constant value W slightly less than V; and the upper main body portion (
62
a
) is formed to have two steps having a breadth W2 (W2 takes a value slightly less than V2) on an engagement tip end side and a breadth W1 (W1 takes a value slightly less than V1) on an engagement rear end side, so that the outside shape of the shell (
6
) and the shapes of the notch portions (
11
)(
21
) can be simple.
Another aspect of the invention provides a coaxial connector (
10
) with a switch, which includes: a normally closed terminal (
3
) and a common terminal (
4
) whose respective contact portions (
31
)(
44
) come in contact with and move apart from each other in association with removal and insertion of a mating connector (
9
); an insulator (
5
) for holding the normally closed terminal (
3
) and the common terminal (
4
); a shell (
6
) for holding the insulator (
5
) from outside; and a housing (
7
) for holding the shell (
6
) from outside, a connecting portion (
33
) of the normally closed terminal (
3
), a connecting portion (
43
) of the common terminal (
4
), and a pair of connecting portions (
63
)(
63
) of the shell (
6
) being protruded in a horizontal direction to be placed on corresponding lands (
13
,
23
)(
14
,
24
)(
15
,
25
)(
15
,
25
) formed on a surface of a printed wiring board (
1
,
2
) near an edge thereof, the coaxial connector (
10
) with a switch being mounted onto the edge of the printed wiring board (
1
,
2
) through soldering of each connecting portion, wherein: the pair of connecting portions (
63
)(
63
) of the shell (
6
) are placed at horizontally symmetric positions with respect to a vertical plane (
74
) passing a center or nearly the center of the housing (
7
); the connecting portion (
33
) of the normally closed terminal (
3
) and the connecting portion (
43
) of the common terminal (
4
) are placed at horizontally symmetric positions with respect to the vertical plane (
74
); and a top surface and a bottom surface of each of the connecting portions (
63
)(
63
)(
33
)(
43
) are formed into vertically symmetric shapes with respect to a horizontal plane (
75
) passing centers or nearly the centers of the connecting portions (
63
)(
63
)(
33
)(
43
).
According to the above arrangement, the pair of connecting portions (
63
)(
63
) of the shell (
6
) are placed at horizontally symmetric positions with respect to the vertical plane (
74
) passing the center or nearly the center of the housing (
7
); the connecting portion (
33
) of the normally closed terminal (
3
) and the connecting portion (
43
) of the common terminal (
4
) are placed at horizontally symmetric positions with respect to the vertical plane (
74
); and the top surface and the bottom surface of each of the connecting portions (
63
)(
63
)(
33
)(
43
) are formed into vertically symmetric shapes with respect to the horizontal plane (
75
) passing the centers or nearly the centers of the connecting portions (
63
)(
63
)(
33
)(
43
). Consequently, as with the aspect of the invention in which the lands (
13
,
23
)(
14
,
24
)(
15
,
25
)(
15
,
25
) formed on the surface of the printed wiring board (
1
,
2
) near the edge thereof are arranged inversely, the coaxial connector (
10
) with a switch can be mounted onto the edge of the printed wiring board (
1
,
2
) through the reverse mounting by merely reversing the coaxial connector (
10
) with a switch.
Another aspect of the invention provides the coaxial connector (
10
) with a switch according to the aspect of the invention described above, wherein a horizontal plane passing the center or nearly the center of the housing (
7
) is given as the horizontal plane (
75
), so that the heights of the coaxial connector (
10
) with a switch from the main surface and from the back surface of the printed wiring board (
1
,
2
) are made almost equal when mounted.
Another aspect of the invention provides the coaxial connector (
10
) with a switch according to an aspect of the invention described above, wherein: the housing (
7
) includes a main body portion (
72
) allowed to engage with two kinds of notch portions (
11
)(
21
) having different shapes formed by making a notch in the edge of the printed wiring board (
1
,
2
); the main body (
72
) includes an upper main body portion (
72
a
) and a lower main body portion (
72
b
) partitioned vertically at the horizontal plane (
75
); and one of the upper main body portion (
72
a
) and the lower main body portion (
72
b
) is formed into a shape allowed to engage with only one of the two kinds of notch portions (
11
)(
21
), and the other is formed into a shape allowed to engage with only the other one of the two kinds of notch portions (
11
)(
21
), so that erroneous mounting can be prevented while reducing the protrusion length from the edge of the printed wiring board (
1
,
2
) when mounted.
Another aspect of the invention provides the coaxial connector (
10
) with a switch according to the aspect of the invention described above, wherein: one of the two kinds of notch portions (
11
)(
21
) is formed to have an opening width of a constant value V from an opening side to an inner side, and the other is formed to have two steps having an opening width V1 (V1>V) on the opening side and an opening width V2 (V2<V) on the inner side; the lower main body portion (
72
b
) is formed to have a breadth of a constant value W slightly less than V; and the upper main body portion (
72
a
) is formed to have two steps having a breadth W2 (W2 takes a value slightly less than V2) on an engagement tip end side and a breadth W1 (W1 takes a value slightly less than V1) on an engagement rear end side, so that the shape of the housing (
7
) and the shapes of the notch portions (
11
)(
21
) can be simple.
Another aspect of the invention provides the coaxial connector (
10
) with a switch according to an aspect of the invention described above, wherein the housing (
7
) is provided with key slots (
82
and
83
a
through
83
e
) allowed to engage with key protrusions provided to the mating connector (
9
), so that erroneous fitting with the mating connector (
9
) can be prevented.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other objects and advantages of the present invention will become clear from the following description with reference to the accompanying drawings, wherein:
FIG.
1
(
a
) is a perspective view of a coaxial connector with a switch, according to an embodiment of the present invention, showing the normal mounting, a part of which is simplified for ease of explanation;
FIG.
1
(
b
) is a perspective view of a coaxial connector with a switch, according to an embodiment of the present invention, showing the reverse mounting, a part of which is simplified for ease of explanation;
FIG.
2
(
a
) is a plan view of the coaxial connector with a switch of FIGS.
1
(
a
) and
1
(
b
);
FIG.
2
(
b
) is a front view of the coaxial connector with a switch of FIGS.
1
(
a
) and
1
(
b
);
FIG.
2
(
c
) is a bottom view of the coaxial connector with a switch of FIGS.
1
(
a
) and
1
(
b
);
FIG. 3
is an enlarged left side view of the coaxial connector with a switch of FIG.
2
(
b
);
FIG. 4
is an enlarged right side view of the coaxial connector with a switch of FIG.
2
(
b
);
FIG. 5
is an enlarged cross section taken along the line
5
—
5
of FIG.
2
(
b
);
FIG. 6
is an exploded perspective view of the coaxial connector with a switch of FIGS.
1
(
a
) and
1
(
b
) showing two terminals on a double scale, a part of which is simplified for ease of explanation;
FIG.
7
(
a
) is a front view of an insulator of
FIG. 6
on a larger scale;
FIG.
7
(
b
) is a left side view of FIG.
7
(
a
) showing an insulator of
FIG. 6
on a larger scale;
FIG.
7
(
c
) is a right side view of FIG.
7
(
a
) showing an insulator of
FIG. 6
on a larger scale;
FIG.
8
(
a
) is a cross section taken along the line
8
(
a
)—
8
(
a
) of FIG.
7
(
a
);
FIG.
8
(
b
) is a cross section taken along the line
8
(
b
)—
8
(
b
) of FIG.
7
(
c
);
FIG.
8
(
c
) is a cross section taken along the line
8
(
c
)—
8
(
c
) of FIG.
7
(
c
);
FIG.
9
(
a
) is a plan view of a shell of
FIG. 6
;
FIG.
9
(
b
) is a partially cutaway front view of a shell of
FIG. 6
;
FIG.
9
(
c
) is a bottom view of a shell of
FIG. 6
;
FIG.
10
(
a
) is a left side view of FIG.
9
(
b
) of the shell of
FIG. 6
;
FIG.
10
(
b
) is a right side view of FIG.
9
(
b
) of the shell of
FIG. 6
;
FIG.
10
(
c
) is a cross section taken along the line
10
(
c
)—
10
(
c
) of FIG.
9
(
b
) of the shell of
FIG. 6
;
FIG.
11
(
a
) is a plan view of a housing of
FIG. 6
;
FIG.
11
(
b
) is a front view of a housing of
FIG. 6
;
FIG.
11
(
c
) is a bottom view of a housing of
FIG. 6
;
FIG. 12
is an enlarged left side view of FIG.
11
(
b
);
FIG. 13
is an enlarged right side view of FIG.
11
(
b
);
FIG. 14
is an enlarged cross section taken along the line
14
—
14
of FIG.
11
(
b
);
FIG. 15
is an enlarged cross section taken along the line
15
—
15
of FIG.
11
(
a
);
FIGS.
16
(
a
)-
16
(
k
) are explanatory views of six key slots on the housing of
FIGS. 6
, and
11
(
a
)-
15
;
FIG.
17
(
a
) is a view of the top surface of the product in the normal mounting of the coaxial connector with a switch onto a printed wiring board;
FIG.
17
(
b
) is a view of the bottom surface of the product in the normal mounting of the coaxial connector with a switch onto a printed wiring board;
FIG.
17
(
c
) is a view of the main surface of the board in the normal mounting of the coaxial connector with a switch onto a printed wiring board;
FIG.
17
(
d
) is a view of the back surface of the board in the normal mounting of the coaxial connector with a switch onto a printed wiring board;
FIG.
17
(
e
) is a view of the main surface of the product in the mounted state in the normal mounting of the coaxial connector with a switch onto a printed wiring board;
FIG.
17
(
f
) is a view of the back surface of the product in the mounted state in the normal mounting of the coaxial connector with a switch onto a printed wiring board;
FIG.
18
(
a
) is a view of the top surface of the product in the reverse mounting of the coaxial connector with a switch onto a printed wiring board;
FIG.
18
(
b
) is a view of the bottom surface of the product in the reverse mounting of the coaxial connector with a switch onto a printed wiring board;
FIG.
18
(
c
) is a view of the main surface of the board in the reverse mounting of the coaxial connector with a switch onto a printed wiring board;
FIG.
18
(
d
) is a view of the back surface of the board in the reverse mounting of the coaxial connector with a switch onto a printed wiring board;
FIG.
18
(
e
) is a view of the main surface of the product in the mounted state in the reverse mounting of the coaxial connector with a switch onto a printed wiring board;
FIG.
18
(
f
) is a view of the back surface of the product in the mounted state in the reverse mounting of the coaxial connector with a switch onto a printed wiring board;
FIG. 19
is a partially cutaway front view of a mating connector;
FIG. 20
is an enlarged right side view of
FIG. 19
;
FIG.
21
(
a
) is an explanatory view of a conventional example;
FIG.
21
(
b
) is an explanatory view of the conventional example of FIG.
21
(
a
);
FIG.
22
(
a
) is an explanatory view of another conventional example where an internal ANT and an RF circuit are arranged inversely in comparison with the case of FIGS.
21
(
a
) and
21
(
b
);
FIG.
22
(
b
) is an explanatory view of another conventional example of FIG.
22
(
a
);
FIGS.
23
(
a
)-
23
(
c
) are views showing an embodiment of the conventional example of FIGS.
21
(
a
) and
21
(
b
); and
FIGS.
24
(
a
)-
24
(
c
) are views showing an embodiment of the conventional example of FIGS.
22
(
a
) and
22
(
b
).
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The following description will describe one embodiment of the invention with reference to FIG.
1
(
a
) through FIG.
20
.
FIGS.
1
(
a
) and
1
(
b
) are perspective views of a coaxial connector with a switch when mounted through the normal mounting and the reverse mounting, respectively, a part of which is simplified for ease of explanation. FIGS.
2
(
a
),
2
(
b
) and
2
(
c
) are a plan view, a front view, and a bottom view of the coaxial connector with a switch, respectively.
FIG. 3
is an enlarged left side view of FIG.
2
(
b
).
FIG. 4
is an enlarged right side view of FIG.
2
(
b
).
FIG. 5
is an enlarged cross section taken along the line
5
—
5
of FIG.
2
(
b
).
FIG. 6
is an exploded perspective view of the coaxial connector with a switch showing two terminals on a double scale.
Referring to FIG.
1
(
a
) through
FIG. 6
, reference numerals
1
and
2
denote a printed wiring board, and reference numeral
10
denotes a receptacle type coaxial connector with a switch (hereinafter, referred to simply as the coaxial connector with a switch).
As shown in FIG.
1
(
a
), the printed wiring board
1
is provided with, at the edge thereof, a notch portion
11
of an almost rectangular shape having the opening width (length in the horizontal direction) of a constant value V from the opening side to the inner side. Lands
13
and
14
for the use of signals and lands
15
and
15
for the use of grounding are formed on the surface near the edge of the notch portion
11
.
The lands
13
and
14
for the use of signals are formed on the surface near the inner side of the notch portion
11
, and placed at the horizontally symmetric positions with respect to a vertical plane
18
that divides the notch portion
11
into halves on the right and left. The surfaces thereof are formed into horizontally symmetric shapes (rectangular shapes) with respect to the vertical plane
18
. The lands
13
and
14
for the use of signals are arranged in the same manner as shown in FIG.
23
(
c
), so that the land
13
is connected to an internal ANT (not shown) through a wiring pattern
16
and the other land
14
is connected to an RF circuit (not shown) through a wiring pattern
17
.
The lands
15
and
15
for the use of grounding are formed on the surface near the edge of the notch portion
11
from either side to the inner side, and placed at horizontally symmetric positions with respect to the vertical plane
18
. The surfaces thereof are formed into horizontally symmetric shapes (shaped like a letter L and an inverted letter L) with respect to the vertical plane
18
.
As shown in FIG.
1
(
b
), the printed wiring board
2
is provided with, at the edge thereof, a notch portion
21
of an almost convex shape with two steps having an opening width V1 (V1>V) on the opening side and an opening with V2 (V2<V) on the inner side. Lands
23
and
24
for the use of signals and lands
25
and
25
for the use of grounding are formed on the surface near the edge of the notch portion
21
.
As with the lands
13
and
14
of FIG.
1
(
a
), the lands
23
and
24
for the use of signals are placed at horizontally symmetric positions with respect to a vertical plane
28
that divides the notch portion
21
into halves on the right and left. The surfaces thereof are formed into horizontally symmetric shapes (rectangular shapes) with respect to the vertical plane
28
. The lands
23
and
24
for the use of signals are arranged in the same manner as shown in FIG.
24
(
c
), so that the land
23
is connected to an internal ANT (not shown) through a wiring pattern
26
, and the other land
24
is connected to an RF circuit (not shown) through a wiring pattern
27
.
The lands
25
and
25
for the use of grounding are formed on the surface near the edge of the notch portion
21
from either side to the inner side, and placed at horizontally symmetric positions with respect to the vertical plane
28
. The surfaces thereof are formed into horizontally symmetric shapes (shaped like a letter L and an inverted letter L) with respect to the vertical plane
28
.
In short, the layout of the internal ANT and the RF circuit connected to the lands
23
and
24
, respectively, on the printed wiring board
2
of FIG.
1
(
b
) is arranged inversely with respect to the layout of the internal ANT and the RF circuit connected to the lands
13
and
14
, respectively, on the printed wiring board
1
of FIG.
1
(
a
).
As shown in FIG.
2
(
a
) through
FIG. 6
, the coaxial connector
10
with a switch is composed of a normally closed terminal
3
and a common terminal
4
as a central conductor, an insulator
5
for holding the normally closed terminal
3
and the common terminal
4
, a shell
6
as an external conductor for holding the insulator
5
from outside, and a housing
7
for holding the outside of the shell
6
.
In the exploded perspective view of
FIG. 6
, the normally closed terminal
3
and the common terminal
4
are scaled up two times with respect to the insulator
5
, the shell
6
, and the housing
7
for ease of explanation.
The normally closed terminal
3
is formed through punching from a metal plate of copper alloy and gold plating, and as shown in
FIG. 6
, it includes a contact portion
31
, a stopper portion
32
, and a connecting portion
33
, which are continuously formed as one body from the tip end side (front side of the drawing) to the rear end side. Reinforcing beads (strip-like protrusions)
34
,
35
, and
36
are provided to the stopper portion
32
and the connecting portion
33
. The top surface and the bottom surface of the connecting portion
33
are formed into vertically symmetric shapes with respect to the horizontal plane passing the center of the connecting portion
33
.
The common terminal
4
is formed through punching and folding from a metal plate of copper alloy and gold plating, and as shown in
FIG. 6
, it includes a first contact portion
41
, a stopper portion
42
, and a connecting portion
43
, which are continuously formed as one body from the tip end side to the rear end side, and a second contact portion
44
which is formed continuously from the first contact portion
41
and bent at or nearly at right angles from the edge near the tip end portion. Reinforcing beads
45
,
46
,
47
and
48
are provided to the first contact portion
41
, the stopper portion
42
, and the connecting portion
43
.
The connecting portion
43
is of the same shape as that of the connecting portion
33
except that the reinforcing bead
48
protrudes in a direction opposite to a direction in which the reinforcing bead
36
protrudes.
The insulator
5
is molded from a thermoplastic resin, and the outside shape thereof is formed to be almost horizontally symmetric and vertically symmetric with respect to a vertical plane
57
and a horizontal plane
58
, respectively, both passing the center or nearly the center thereof.
As shown in FIG.
7
(
a
) through FIG.
7
(
c
) and FIG.
8
(
a
) through FIG.
8
(
c
), the insulator
5
includes a fitting portion
51
having an almost cylindrical outside shape and a holder portion
52
having an almost prismatic outside shape, which are continuously formed as one body from the tip end side (front side of
FIG. 6
) to the rear end side.
Through the fitting portion
51
and the holder portion
52
is provided a pin-inserting hole
53
into which a center pin
91
of a mating connector
9
(described below) is inserted.
The fitting portion
51
and the holder portion
52
are provided with terminal-accommodating slots
54
and
55
into which the normally closed terminal
3
and the common terminal
4
are press-fit for being attached, respectively. The terminal-accommodating slots
54
and
55
use the rear end sides (inner sides of
FIG. 6
) as insert openings. The terminal-accommodating slot
54
is on the right side when viewed from the rear end side and formed along the longitudinal direction with a part of which communicating with the pin-inserting hole
53
. The other terminal-accommodating slot
55
is on the left side when viewed from the rear end side, and formed along the longitudinal direction with a part of which communicating with the pin-inserting hole
53
.
A plurality of stopper protrusions
56
are provided to the outer wall surface of the holder portion
52
, which are press-fit into the shell
6
for being attached.
The shell
6
is formed through die casting of aluminum or zinc alloy followed by gold plating, and as shown in FIG.
9
(
a
) through FIG.
9
(
c
) and FIG.
10
(
a
) through FIG.
10
(
c
), it includes an almost cylindrical contact portion
61
and an almost prismatic main body portion
62
, which are continuously formed as one body from the fitting side (front side of
FIG. 6
) to the rear end side. Also, the shell
6
is provided with a pair of wing-like connecting portions
63
and
63
that protrude in the horizontal direction from the both sidewalls of the main body portion
62
.
Through the contact portion
61
and the main body portion
62
is provided an insulator-fitting hole
64
into which the insulator
5
is accommodated.
The pair of connecting portions
63
and
63
are placed at horizontally symmetric positions with respect to a vertical plane
65
passing the center of the shell
6
. The top surface and the bottom surface of the pair of connecting portions
63
and
63
are formed into vertically symmetric shapes with respect to a horizontal plane
66
passing the center of the shell
6
.
An engagement slot
67
to be engaged with an engagement protrusion
95
of a shell
93
of the mating connector
9
is formed on the outer circumferential wall of the contact portion
61
along the circumferential direction.
The main body portion
62
is composed of an upper main body portion
62
a
and a lower main body portion
62
b
partitioned vertically into halves at the horizontal plane
66
. The breadth (width in the horizontal direction, and so is defined hereinafter) of the upper main body portion
62
a
is made to be less than the breadth of the lower main body portion
62
b.
An engagement protrusion
68
is provided to each of the top wall surface of the upper main body portion
62
a
and the bottom wall surface of the lower main body portion
62
b.
The housing
7
is molded from thermoplastic resin, and as shown in FIG.
11
(
a
) through
FIG. 15
, it includes a tip end portion
71
and a main body portion
72
, which are continuously formed as one body from the tip end side (fitting side, the front side of
FIG. 6
) to the rear end side.
Through the tip end portion
71
and the main body portion
72
is provided a shell-accommodating hole
73
into which not only the main body portion
62
of the shell
6
is accommodated for being held, but also a shell
92
of the mating connector
9
is accommodated on the tip end side in a space defined with the contact portion
61
of the shell
6
.
The tip end portion
71
is formed into an almost symmetric shape with respect to a vertical plane
74
and a horizontal plane
75
each passing the center or nearly the center of the housing
7
, and is formed into a tube-like shape having the outside contour of the cross section thereof shaped into a square with a side-length of W (a value slightly less than V), and the inner contour of the cross section thereof formed into a circular shape.
The main body portion
72
is formed into a horizontally symmetric shape with respect to the vertical plane
74
, and includes an upper main body portion
72
a
and a lower main body portion
72
b
partitioned vertically into halves at the horizontal plane
75
.
The upper main body portion
72
a
is composed of a first upper main body portion
76
a
on the tip end side and a second upper main body portion
77
a
on the rear end side. The lower main body portion
72
b
is composed of a first lower main body portion
76
b
on the tip end side and a second lower main body portion
77
b
on the rear end side. The second upper main body portion
77
a
and the second lower main body portion
77
b
are partitioned vertically into halves by slits
78
and
78
. The slits
78
and
78
are engaged with the connecting portions
63
and
63
of the shell
6
so as to allow the connecting portions
63
and
63
to protrude outward.
Protruding portions
79
and
79
are formed on the both sidewalls of the first upper main body portion
76
a
to narrow the breadth to W1, which is slightly less than V1, so that it is allowed to engage with the opening side of the notch portion
21
while being inhibited from engaging with the notch portion
11
.
The second upper main body portion
77
a
is formed to have the breadth W2, which is slightly less than V2, so that it is allowed to engage with the inner side of the notch portion
21
.
The first lower main body portion
76
b
and the second lower main body portion
77
b
are formed to have the breadth W, which is the same as the breadth of the tip end portion
71
, so that they are allowed to engage with the notch portion
11
while being inhibited from engaging with the inner side of the notch portion
21
.
An engagement slot
80
is formed on the rear end side of the upper inner wall surface of the second upper main body portion
77
a
, which abuts against the engagement protrusion
68
of the upper main body portion
62
a
of the shell
6
. Also, an engagement slot
80
is formed on the rear end side of the lower inner wall surface of the second lower main body portion
77
b
, which abuts against the engagement protrusion
68
of the lower main body portion
62
b
of the shell
6
.
Stopper protrusions
81
and
81
are formed to protrude from the inner wall surfaces on the tip end side of the second upper main body portion
77
a
and the second lower main body
77
b
, respectively, which abut against the corresponding outer wall surfaces of the respective upper main body portion
62
a
and lower main body portion
62
b
when the shell
6
is press-fit.
Six key slots
82
and
83
a
through
83
e
, each using the tip end side (fitting side) as the inserting side, are formed in the tip end portion
71
, and the inner wall surfaces of the first upper main body portion
76
a
and the first lower main body portion
76
b
of the housing
7
. These key slots
82
and
83
a
through
83
e
are provided in correspondence with key protrusions
97
and
98
a
through
98
e
(described below) provided to protrude from the housing of the mating connector
9
, and prevent erroneous fitting with an inappropriate mating connector (for example, erroneous fitting with a product of any other manufacturer).
With reference to
FIGS. 3
,
5
,
6
,
12
,
14
, and
15
, the above description described the case where all the six key slots
82
and
83
a
through
83
e
are formed as shown in FIG.
16
(
a
) for ease of explanation. It should be appreciated, however, that, in practical applications, one key slot
82
is combined with any two key slots out of the five key slots
83
a
through
83
e
as shown in FIGS.
16
(
b
) through
16
(
k
). An arbitrary combination is selected from ten types shown in FIGS.
16
(
b
) through
16
(
k
), and the corresponding type is selected from ten types of the key protrusions
97
and
98
a
through
98
e
of the mating connector
9
.
A method of fabricating the coaxial connector
10
with a switch will now be explained with reference to FIG.
6
.
Initially, the insulator
5
is press-fit into the insulator-fitting hole
64
of the shell
6
from the rear end side (inner side of FIG.
6
). In this instance, the stopper protrusions
56
of the insulator
5
abut against the inner wall of the insulator-fitting hole
64
, and the insulator
5
is thereby held by the shell
6
. Also, the shell
6
and the insulator
5
are assembled in such a manner that the vertical plane
65
and horizontal plane
66
of the shell
6
coincide with the vertical plane
57
and the horizontal plane
58
of the insulator
5
, respectively.
Then, the normally closed terminal
3
and the common terminal
4
are press-fit respectively into the terminal-accommodating slots
54
and
55
of the insulator
5
from the rear end side. In this instance, the contact portion
31
and the stopper protrusion of the stopper portion
42
abut against the inner walls of the terminal-accommodating slots
54
and
55
, respectively, and the normally closed terminal
3
and the common terminal
4
are thereby held by the insulator
5
. Also, it is arranged in such a manner that the horizontal plane passing the centers of the connecting portion
33
and the connecting portion
43
coincides with the horizontal plane
58
of the insulator
5
.
Then, the housing
7
is press-fit from the tip end side of the shell
6
so as to cover the shell
6
, and the shell
6
is thereby accommodated inside the shell-accommodating hole
73
. In this instance, the connecting portions
63
and
63
of the shell
6
protrude in the horizontal direction through the slits
78
and
78
of the housing
7
. Also, the engagement protrusions
68
and
68
provided to the main body portion
62
of the shell
6
are engaged with the engagement slots
80
and
80
of the housing
7
. Meanwhile, the plurality of stopper protrusions
81
protruding from the inner wall surface of the lower main body portion
72
b
abut against the outer wall of the main body portion
62
of the shell
6
, and the shell
6
is thereby held by the housing
7
. Also, the shell
6
and the housing
7
are assembled in such a manner that the vertical plane
74
and the horizontal plane
75
of the housing
7
coincide with the vertical plane
65
and the horizontal plane
66
of the shell
6
, respectively.
A method of mounting the coaxial connector
10
with a switch onto the printed wiring boards
1
and
2
will now be explained with reference to FIG.
17
(
a
) through FIG.
17
(
f
) and FIGS.
18
(
a
) through
18
(
f
).
Initially, an explanation will be given to the normal mounting to mount the coaxial connector
10
with a switch onto the printed wiring board
1
through the engagement with the notch portion
11
with reference to FIG.
17
(
a
) through FIG.
17
(
f
).
(1) As shown in FIGS.
17
(
a
) through
17
(
d
), the lower main body portion
72
b
(
76
b
and
77
b
) of the main body portion
72
of the coaxial connector
10
with a switch, which will be engaged with the notch portion
11
of the printed wiring board
1
, is formed to have the breadth W slightly less than the opening width V of the notch portion
11
. Hence, as shown in FIGS.
17
(
e
) and
17
(
f
), the coaxial connector
10
with a switch is allowed to engage with the notch portion
11
of the printed wiring board
1
.
(2) Subsequently, the mounting is completed by connecting the connecting portion
33
of the normally closed terminal
3
and the connecting portion
43
of the common terminal
4
to the lands
13
and
14
for the use of signals, respectively, through soldering or the like, and by connecting the connecting portions
63
and
63
of the shell
6
to the lands
15
and
15
for the use of grounding, respectively, through soldering or the like. Consequently, the connecting portion
33
of the normally closed terminal
3
and the connecting portion
43
of the common terminal
4
are connected respectively to the internal ANT and the RF circuit on the printed wiring board
1
.
(3) The coaxial connector
10
with a switch is prevented from being mounted inversely onto the printed wiring board
1
through an erroneous engagement with the notch portion
11
. To be more specific, when an attempt is made to engage the coaxial connector
10
with a switch with the notch portion
11
of the printed wiring board
1
in inversed states from those shown in FIGS.
17
(
a
) and
17
(
b
), the upper main body portion
72
a
(
76
a
and
77
a
) of the coaxial connector
10
with a switch is to engage with the notch portion
11
. However, because the breadth W1 of the upper main body portion
76
a
is greater than the opening width V of the notch portion
11
, it is impossible for the upper main body portion
76
a
to engage with the notch portion
11
, and erroneous mounting can be thus prevented.
Next, an explanation will be given to the reverse mounting to mount the coaxial connector
10
with a switch onto the printed wiring board
2
through the engagement with the notch portion
21
with reference to FIG.
18
(
a
) through FIG.
18
(
f
).
(1) As shown in FIGS.
18
(
a
) through
18
(
d
), the upper main body portions
76
a
and
77
a
of the main body portion
72
of the coaxial connector
10
with a switch, which will be engaged with the notch portion
21
of the printed wiring board
2
, are formed to have the breadths W1 and W2 slightly less than the opening widths V1 and V2 of the notch portions
21
, respectively. Hence, as shown in FIGS.
18
(
e
) and
18
(
f
), the coaxial connector
10
with a switch is allowed to engage with the notch portion
21
of the printed wiring board
2
.
(2) Subsequently, the mounting is completed by connecting the connecting portion
33
of the normally closed terminal
3
and the connecting portion
43
of the common terminal
4
to the lands
23
and
24
for the use of signals, respectively, through soldering or the like, and by connecting the connecting portions
63
and
63
of the shell
6
to the lands
25
and
25
for the use of grounding, respectively, through soldering or the like. Consequently, even in a case (the case shown in FIGS.
18
(
a
) through
18
(
f
)) where the layout of the internal ANT and the RF circuit is reversed to that in FIG.
17
(
a
) through FIG.
17
(
f
), the connecting portion
33
of the normally closed terminal
3
and the connecting portion
43
of the common terminal
4
can be connected to the internal ANT and the RF circuit on the printed wiring board
2
, respectively.
(3) The coaxial connector
10
with a switch is prevented from being mounted inversely onto the printed wiring board
2
through an erroneous engagement with the notch portion
21
.
To be more specific, when an attempt is made to engage the coaxial connector
10
with a switch with the notch portion
21
of the printed wiring board
2
in inversed states from those shown in FIGS.
18
(
a
) and
18
(
b
), the lower main body portions
76
b
and
77
b
of the main body portion
72
are to engage with the notch portion
21
. However, because the breadth W thereof is greater than the opening width V2 of the notch portion
21
, it is impossible for the second lower main body
77
b
of the main body portion
72
to engage with the notch portion
21
, and erroneous mounting can be thus prevented.
Connection with the mating connector
9
will now be explained with reference to FIG.
19
and FIG.
20
.
FIG.
19
and
FIG. 20
show the mating connector
9
, and the mating connector
9
includes a center pin
91
as a central conductor, an insulator
92
for holding the center pin
91
, a shell
93
as an external conductor for holding the insulator
92
from outside, and a housing
94
for holding the shell
93
from outside. A plurality of ¼-arc engagement protrusions
95
are provided to the inner wall surface on the fitting side of the shell
93
along the inner circumferential direction.
A coaxial cable
96
is coupled to the non-fitting side of the mating connector
9
, and the central conductor of the coaxial cable
96
is electrically connected to the center pin
91
, whereas the exterior conductor (for example, a braided conductor) of the coaxial cable
96
is electrically connected to the shell
93
.
Assume that the key slot
82
and the key slots
83
a
and
83
e
(corresponds to FIG.
16
(
b
)) are the key slots provided to the coaxial connector
10
with a switch for ease of explanation. Then, of the six key protrusions
97
and
98
a
through
98
e
, the key protrusions correspondingly provided to the mating connector
9
are one key protrusion
97
and two key protrusions
98
a
and
98
e
selected from the five key protrusions
98
a
through
98
e
, as shown in FIG.
20
.
It should be noted, however, that, in practical applications, ten types including types of “
97
and
98
a
and
98
e
” through “
97
and
98
c
and
98
d
” are available as combinations of the key protrusions
97
and
98
a
through
98
e
provided to the mating connector
9
in correspondence with the ten types shown in FIG.
16
(
b
) through FIG.
16
(
k
).
When the mating connector
9
is fit into the coaxial connector
10
with a switch, the center pin
91
is inserted into the pin-inserting hole
53
and comes in elastic contact with the first contact portion
41
of the common terminal
4
, which causes the first contact portion
41
to displace in a specific direction (downward of FIG.
5
), whereupon the second contract portion
44
having been in contact with the contact portion
31
of the normally closed terminal
3
moves away from the contact portion
31
. In short, the center pin
91
of the mating connector
9
is electrically connected to the common terminal
4
, and the electrical connection between the common terminal
4
and the normally closed terminal
3
is cut off.
Also, when the mating connector
9
is fit into the coaxial connector
10
with a switch, the contact portion of the shell
93
comes in elastic contact with the contact portion
61
of the shell
6
, while the engagement protrusions
95
of the shell
93
engage with the engagement slot
67
of the shell
6
. In short, the shell
93
of the mating connector
9
is electrically connected to the shell
6
of the coaxial connector
10
with a switch.
Consequently, the connection of the common terminal
4
of the coaxial connector
10
with a switch is switched from the normally closed terminal
3
to the center pin
91
of the mating connector
9
, and the shell
6
of the coaxial connector
10
with a switch is connected to the shell
93
of the mating connector
9
. To be more specific, the RF circuit on the printed wiring board
1
or
2
is switched from the internal ANT to the external ANT.
The embodiment above described a case where the key slots
82
and
83
a
through
83
e
are provided to the housing
7
to prevent erroneous fitting with the mating contact
9
. It should be appreciated, however, that the invention is not limited to such a case, and can be used in a case where the key slots
82
and
83
a
through
83
e
are omitted.
In the embodiment above, in order to form the housing
7
and the notch portions
11
and
21
into simple shapes, the main body portion
72
of the housing
7
is composed of the upper main body portion
72
a
and the lower main body portion
72
b
, the upper main body portion
72
a
and the lower main body portion
72
b
are composed of the first upper main body portion
76
a
and the second upper main body portion
77
a
, and the first lower main body portion
76
b
and the second lower main body portion
77
b
, respectively. Then W1 (W1>W) is given as the breadth of the first upper main body portion
76
a
, W2 (W2<W) as the breadth of the second upper main body portion
77
a
, and W as the breadths of the first lower main body portion
76
b
and the second lower main body portion
77
b
, so that, of the notch portion
11
and the notch portion
21
, the lower main body portion
72
b
(
76
b
and
77
b
) of the main body portion
72
is allowed to engage with only the notch portion
11
, and the upper main body portion
72
a
(
76
a
and
77
a
) is allowed to engage with only the other notch portion
21
. It should be appreciated, however, that the invention is not limited to the foregoing shapes. The invention can be used in a case where the main body portion
72
includes an upper main body portion and a lower main body portion partitioned vertically at the horizontal plane
75
, and one of the upper main body portion and the lower main body portion (for example, the lower main body portion) is formed into a shape such that can engage with only one of two kinds of notch portions having different shapes, while the other (for example, the upper main body portion) is formed into a shape such that can engage with the other one of the two kinds of notch portions.
The embodiment above described a case where, in order to prevent erroneous mounting while reducing the protrusion length from the edge of the printed wiring board
1
or
2
when mounted, the main body portion
72
is composed of the upper main body portion and the lower main body portion having different shapes, and one of them is formed into a shape such that can engage with only one of two kinds of notch portions having different shapes and the other is formed into a shape such that can engage with only the other one of the two kinds of notch portions. It should be appreciated, however, that the invention is not limited to such a case.
For example, the invention can be used in a case where the upper main body portion
72
a
and the lower main body portion
72
b
are formed into the same shape (for example, a rectangle with a breadth of W), or the upper portion and the lower portion of the housing
7
are formed into the same shape. In these cases, the coaxial connector
10
with a switch can be mounted onto the printed wiring boards
1
and
2
respectively having the notch portions
11
and
21
of the same shape (for example, a rectangular shape). Alternatively, the coaxial connector
10
with a switch can be mounted onto the edge of the printed wiring board
1
or
2
omitting the notch portion
11
or
21
. In this instance, erroneous mounting can be prevented by providing a mark used to distinguish the top from the bottom in one of the top surface and the bottom surface of the housing
7
.
The embodiment above described a case where a horizontal plane passing the center or nearly the center of the housing
7
is given as the horizontal plane
75
in order to make the heights of the coaxial connector
10
with a switch from the main surface and from the back surface of the printed wiring board
1
or
2
almost equal when mounted. It should be appreciated, however, that the invention is not limited to such a case. The invention can be used in a case where the horizontal plane
75
that partitions the top surface and the bottom surface of each of the connecting portions
63
and
63
of the shell
6
, the connecting portion
33
of the normally closed terminal
3
, and the connecting portion
43
of the common terminal
4
into vertically symmetric shapes is a horizontal plane passing any given point within the housing
7
other than the center of the housing
7
.
The embodiment above described a case where the coaxial connector
10
with a switch includes the housing
7
that holds the outside of the shell
6
, and by devising the outside shape of the housing
7
, mounting through an erroneous engagement with the notch portion
11
or
21
can be prevented while reducing the protrusion length from the edge of the printed wiring board
1
or
2
when mounted. It should be appreciated, however, that the invention is not limited to such a case. The same advantage can be achieved with a coaxial connector with a switch omitting the housing
7
by devising the outside shape of the shell
6
. The following description will describe more in detail such a case.
By giving the same outside shape of the housing
7
to the outside shapes of the upper main body
62
a
and the lower main body
62
b
of the shell
6
partitioned vertically at the horizontal plane
66
, it is possible to prevent mounting through an erroneous engagement with the notch portion
11
or
21
. To be more specific, one of the upper main body portion
62
a
and the lower main body portion
62
b
(for example, the lower main body portion
62
b
) is formed into a shape such that can engage with only one of the notch portions
11
and
21
(for example, the notch portion
11
), and the other (for example, the upper main body portion
62
a
) is formed into a shape such that can engage with only the other one of the notch portions
11
and
21
(for example, the notch portion
21
). Then, it becomes possible to prevent mounting through an erroneous engagement with the notch portion
11
or
21
while reducing the protrusion length from the edge of the printed wiring board
1
or
2
.
In this case, given W as the breadth of the lower main body portion
62
b
, then, by forming the upper main body portion
62
a
to have two steps with W2 given as the breadth on the engagement tip end side and W1 as the breadth on the engagement rear end side, it is possible to form the shell
6
and the notch portions
11
and
21
into simple shapes.
Also, by giving a horizontal plane passing the center of the shell
6
as the horizontal plane
66
that partitions the shell
6
into the upper main body portion
62
a
and the lower main body portion
62
b
, it is possible to make the heights of a coaxial connector with a switch from the main surface and from the back surface of the printed wiring board
1
or
2
almost equal when mounted, as with the case where the housing
7
is provided. In this case, the invention can be used when a horizontal plane passing any given point within the shell
6
other than the center of the shell
6
is given as the horizontal plane
66
.
Further, the invention can be used in a case where the upper main body portion
62
a
and the lower main body portion
62
b
of the shell
6
partitioned vertically at the horizontal plane
66
are formed into the same outside shape (for example, a rectangle with a breadth of W). In this case, the coaxial connector with a switch can be mounted onto the printed wiring board
1
or
2
having the notch portion
11
or
21
of the same shape (for example, a rectangle having an opening width of V). Alternatively, the coaxial connector with a switch can be mounted onto the printed wiring board
1
or
2
omitting the notch portion
11
or
21
.
While there has been described what are at present considered to be preferred embodiments of the present invention, it will be understood that various modifications may be made thereto, and it is intended that the appended claims cover all such modifications as fall within the true spirit and scope of the invention.
According to an aspect of the invention, the coaxial connector
10
with a switch includes the normally closed terminal
3
, the common terminal
4
, the insulator
5
, and the shell
6
. The coaxial connector
10
with a switch is mounted on the edge of the printed wiring board
1
,
2
, wherein the pair of connecting portions
63
and
63
of the shell
6
are placed at horizontally symmetric positions with respect to the vertical plane
65
passing the center or nearly the center of the shell
6
; the connecting portion
33
of the normally closed terminal
3
and the connecting portion
43
of the common terminal
4
are placed at horizontally symmetric positions with respect to the vertical plane
65
; and the top surface and the bottom surface of each of the connecting portions
63
,
63
,
33
,
43
are formed into vertically symmetric shapes with respect to the horizontal plane
66
passing the centers or nearly the centers of the connecting portions
63
,
63
,
33
,
43
. Consequently, even in a case where two circuits or elements (for example, an internal ANT and a RF circuit) laid out on the printed wiring board
1
,
2
are arranged inversely, the same coaxial connector with a switch can be used through the reverse mounting, which makes it possible to use the coaxial connector with a switch commonly. It is thus possible to save the costs by suppressing an increase of the manufacturing facilities.
According to another aspect of the invention, a horizontal plane passing the center or nearly the center of the shell
6
is given as the horizontal plane
66
. It is thus possible to make the heights of the coaxial connector with a switch from the main surface and from the back surface of the printed wiring board
1
,
2
nearly equal when mounted.
According to another aspect of the invention, the shell
6
includes the main body portion
62
allowed to engage with notch portions
11
,
21
; the main body portion
62
includes the upper main body portion
62
a
and the lower main body portion
62
b
partitioned vertically at the horizontal plane
66
; and one of the upper main body portion
62
a
and the lower main body portion
62
b
is formed into a shape allowed to engage with only one of two kinds of notch portions
11
,
21
, and the other is formed into a shape allowed to engage with only the other one of the notch portions
11
,
21
. It is thus possible to prevent erroneous mounting while reducing the protrusion length from the edge of the printed wiring board
1
,
2
when mounted.
According to another aspect of the invention, the lower main body portion
62
b
is formed to have a breadth W slightly less than an opening width V of the notch portion
11
, and the upper main body portion
62
a
is formed to have two steps having a breadth W1 slightly less than an opening width V1 on an opening side of the notch portion
21
and a breadth W2 slightly less than an opening width V2 on an inner side, so that a relation, W1>W>W2, is established. It is thus possible to make the outside shape of the shell
6
and the shapes of the notch portions
11
,
21
simple.
According to another aspect of the invention, the coaxial connector
10
with a switch includes the normally closed terminal
3
, the common terminal
4
, the insulator
5
, the shell
6
, and the housing
7
, and being mounted on the edge of the printed wiring board
1
,
2
, wherein: the pair of connecting portions
63
and
63
of the shell
6
are placed at horizontally symmetric positions with respect to the vertical plane
74
passing the center or nearly the center of the housing
7
; the connecting portion
33
of the normally closed terminal
3
and the connecting portion
43
of the common terminal
4
are placed at horizontally symmetric positions with respect to the vertical plane
74
; and the top surface and the bottom surface of each of the connecting portions
63
,
63
,
33
,
43
are formed into vertically symmetric shapes with respect to the horizontal plane
75
passing the centers or nearly the centers of the connecting portions
63
,
63
,
33
,
43
. Consequently, as with the aspect of the invention in which two circuits or elements (for example, an internal ANT and a RF circuit) laid out on the printed wiring board
1
,
2
are arranged inversely, the same coaxial connector
10
with a switch can be used through the reverse mounting, which makes it possible to use the coaxial connector with a switch commonly. It is thus possible to save the costs by suppressing an increase of the manufacturing facilities.
According to another aspect of the invention, a horizontal plane passing the center or nearly the center of the housing
7
is given as the horizontal plane
75
. It is thus possible to, as with an aspect of the invention described above, make the heights of the coaxial connector with a switch from the main surface and from the back surface of the printed wiring board
1
,
2
nearly equal when mounted.
According to another aspect of the invention, the housing
7
includes the main body portion
72
allowed to engage with the notch portions
11
,
21
; the main body
72
includes the upper main body portion
72
a
and the lower main body portion
72
b
partitioned vertically at the horizontal plane
75
; and one of the upper main body portion
72
a
and the lower main body portion
72
b
is formed into a shape allowed to engage with only one of the notch portions
11
,
21
, and the other is formed into a shape allowed to engage with only the other one of the notch portions
11
,
21
. It is thus possible to prevent erroneous mounting while reducing the protrusion length from the edge of the printed wiring board
1
,
2
when mounted.
According to another aspect of the invention, the lower main body portion
72
b
is formed to have a breadth W slightly less than an opening width V of the notch portion
11
, and the upper main body portion
72
a
is formed to have two steps having a breadth W1 slightly less than an opening width V1 on an opening side of the notch portion
21
and a breadth W2 slightly less than an opening width V2 on an inner side, so that a relation, W1>W>W2, is established. It is thus possible to make the outside shape of the housing
7
and the shapes of the notch portions
11
,
21
simple.
According to another aspect of the invention, the housing
7
is provided with key slots
82
and
83
a
through
83
e
allowed to engage with key protrusions provided to the mating connector
9
. It is thus possible to prevent erroneous fitting with the mating connector
9
.
Claims
- 1. A coaxial connector with a switch, the coaxial connector comprising:a normally closed terminal and a common terminal whose respective contact portions contact and move apart from each other in association with removal and insertion of a mating connector; an insulator for holding the normally closed terminal and the common terminal; and a shell for holding the insulator from outside, a connecting portion of the normally closed terminal, a connecting portion of the common terminal, and a pair of connecting portions of the shell protruding in a horizontal direction to be placed on corresponding lands formed on a surface of a printed wiring board near an edge thereof, the coaxial connector being mounted onto the edge of the printed wiring board through soldering of each connecting portion of the normally closed terminal, the common terminal, and the shell, wherein: the pair of connecting portions of the shell are placed at horizontally symmetric positions with respect to a vertical plane passing a center or nearly the center of the shell; the connecting portion of the normally closed terminal and the connecting portion of the common terminal are placed at horizontally symmetric positions with respect to the vertical plane; and a top surface and a bottom surface of each of the connecting portions of the normally closed terminal, the common terminal, and the shell are formed into vertically symmetric shapes with respect to a horizontal plane passing centers or nearly the centers of the connecting portions.
- 2. The coaxial connector with a switch according to claim 1, wherein:the shell comprises a main body portion allowed to engage with two kinds of notch portions having different shapes, each formed by making a notch of the shape in the edge of the printed wiring board; the main body portion comprises an upper main body portion and a lower main body portion partitioned vertically at the horizontal plane passing the centers or nearly the centers of the connecting portions; and one of the upper main body portion and the lower main body portion is formed into a shape allowed to engage with only one of the two kinds of notch portions, and the other is formed into a shape allowed to engage with only the other one of the two kinds of notch portions.
- 3. The coaxial connector with a switch according to claim 2, wherein:one of the two kinds of notch portions is formed to have an opening width of a constant value V from an opening side to an inner side, and the other is formed to have two steps having an opening width V1, where V1>V, on the opening side and an opening width V2, where V2<V, on the inner side; the lower main body portion is formed to have a breadth of a constant value W slightly less than V; and the upper main body portion is formed to have two steps having a breadth W2, which takes a value slightly less than V2, on an engagement tip end side and a breadth W1, which takes a value slightly less than V1, on an engagement rear end side.
- 4. The coaxial connector with a switch according to claim 1, wherein the horizontal plane passing the centers or nearly the centers of the connecting portions is a horizontal plane passing the center or nearly the center of the shell.
- 5. The coaxial connector with a switch according to claim 4, wherein:the shell comprises a main body portion allowed to engage with two kinds of notch portions having different shapes, each formed by making a notch of the shape in the edge of the printed wiring board; the main body portion comprises an upper main body portion and a lower main body portion partitioned vertically at the horizontal plane passing the centers or nearly the centers of the connecting portions; and one of the upper main body portion and the lower main body portion is formed into a shape allowed to engage with only one of the two kinds of notch portions, and the other is formed into a shape allowed to engage with only the other one of the two kinds of notch portions.
- 6. The coaxial connector with a switch according to claim 5, wherein:one of the two kinds of notch portions is formed to have an opening width of a constant value V from an opening side to an inner side, and the other is formed to have two steps having an opening width V1, where V1>V, on the opening side and an opening width V2, where V2<V, on the inner side; the lower main body portion is formed to have a breadth of a constant value W slightly less than V; and the upper main body portion is formed to have two steps having a breadth W2, which takes a value slightly less than V2, on an engagement tip end side and a breadth W1, which takes a value slightly less than V1, on an engagement rear end side.
- 7. A coaxial connector with a switch, the coaxial connector comprising:a normally closed terminal and a common terminal whose respective contact portions contact and move apart from each other in association with removal and insertion of a mating connector; an insulator for holding the normally closed terminal and the common terminal; a shell for holding the insulator from outside; and a housing for holding the shell from outside, a connecting portion of the normally closed terminal, a connecting portion of the common terminal, and a pair of connecting portions of the shell protruding in a horizontal direction to be placed on corresponding lands formed on a surface of a printed wiring board near an edge thereof, the coaxial connector being mounted onto the edge of the printed wiring board through soldering of each connecting portion of the normally closed terminal, the common terminal, and the shell, wherein: the pair of connecting portions of the shell are placed at horizontally symmetric positions with respect to a vertical plane passing a center or nearly the center of the housing; the connecting portion of the normally closed terminal and the connecting portion of the common terminal are placed at horizontally symmetric positions with respect to the vertical plane; and a top surface and a bottom surface of each of the connecting portions of the normally closed terminal, the common terminal, and the shell are formed into vertically symmetric shapes with respect to a horizontal plane passing centers or nearly the centers of the connecting portions.
- 8. The coaxial connector with a switch according to claim 7, wherein the housing further comprises key slots allowed to engage with key protrusions on the mating connector.
- 9. The coaxial connector with a switch according to claim 7, wherein:the housing comprises a main body portion allowed to engage with two kinds of notch portions having different shapes, each formed by making a notch of the shape in the edge of the printed wiring board; the main body portion comprises an upper main body portion and a lower main body portion partitioned vertically at the horizontal plane passing the centers or nearly the centers of the connecting portions; and one of the upper main body portion and the lower main body portion is formed into a shape allowed to engage with only one of the two kinds of notch portions, and the other is formed into a shape allowed to engage with only the other one of the two kinds of notch portions.
- 10. The coaxial connector with a switch according to claim 9, wherein the housing further comprises key slots allowed to engage with key protrusions on the mating connector.
- 11. The coaxial connector with a switch according to claim 9, wherein:one of the two kinds of notch portions is formed to have an opening width of a constant value V from an opening side to an inner side, and the other is formed to have two steps having an opening width V1, where V1>V, on the opening side and an opening width V2, where V2<V, on the inner side; the lower main body portion is formed to have a breadth of a constant value W slightly less than V; and the upper main body portion is formed to have two steps having a breadth W2, which takes a value slightly less than V2, on an engagement tip end side and a breadth W1, which takes a value slightly less than V1, on an engagement rear end side.
- 12. The coaxial connector with a switch according to claim 11, wherein the housing further comprises key slots allowed to engage with key protrusions on the mating connector.
- 13. The coaxial connector with a switch according to claim 7, wherein the horizontal plane passing the centers or nearly the centers of the connecting portions is a horizontal plane passing the center or nearly the center of the housing.
- 14. The coaxial connector with a switch according to claim 13, wherein the housing further comprises key slots allowed to engage with key protrusions on the mating connector.
- 15. The coaxial connector with a switch according to claim 13, wherein:the housing comprises a main body portion allowed to engage with two kinds of notch portions having different shapes, each formed by making a notch of the shape in the edge of the printed wiring board; the main body portion comprises an upper main body portion and a lower main body portion partitioned vertically at the horizontal plane passing the centers or nearly the centers of the connecting portions; and one of the upper main body portion and the lower main body portion is formed into a shape allowed to engage with only one of the two kinds of notch portions, and the other is formed into a shape allowed to engage with only the other one of the two kinds of notch portions.
- 16. The coaxial connector with a switch according to claim 15, wherein the housing further comprises key slots allowed to engage with key protrusions on the mating connector.
- 17. The coaxial connector with a switch according to claim 15, wherein:one of the two kinds of notch portions is formed to have an opening width of a constant value V from an opening side to an inner side, and the other is formed to have two steps having an opening width V1, where V1>V, on the opening side and an opening width V2, where V2<V, on the inner side; the lower main body portion is formed to have a breadth of a constant value W slightly less than V; and the upper main body portion is formed to have two steps having a breadth W2, which takes a value slightly less than V2, on an engagement tip end side and a breadth W1, which takes a value slightly less than V1, on an engagement rear end side.
- 18. The coaxial connector with a switch according to claim 17, wherein the housing further comprises key slots allowed to engage with key protrusions on the mating connector.
Priority Claims (1)
| Number |
Date |
Country |
Kind |
| 2002-230535 |
Aug 2002 |
JP |
|
US Referenced Citations (8)
