Information
-
Patent Grant
-
6305977
-
Patent Number
6,305,977
-
Date Filed
Tuesday, January 18, 200024 years ago
-
Date Issued
Tuesday, October 23, 200122 years ago
-
Inventors
-
Original Assignees
-
Examiners
Agents
- Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
-
CPC
-
US Classifications
Field of Search
US
- 439 578
- 439 585
- 439 583
- 439 584
- 439 581
- 439 582
-
International Classifications
-
Abstract
An end structure is provided for a coaxial connector where an exposed braided wire of a shield wire is press-fitted to a shield terminal. In the structure, the shield terminal includes a bottom par, a pair of half-box parts on both sides of the bottom part and a pair of press-fitting pieces for the braided wire. The parts are capable of plastic deformation to their closing position where their opposing end faces come into contact with each other. By closing the box part, an inner housing, an inner terminal and a part of exposed braided wire are covered with the shield terminal, while the braided wire is press-fitted to the pair of press-fitting pieces.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an end structure for a high-frequency coaxial connector required to be electro-magnetically insulated from the outside and also relates to a method of treating the end of the high-frequency coaxial connector.
2. Description of the Related Art
Japanese Utility Model Publication (kokai) No. 4-52371 discloses a high-frequency coaxial connector.
FIG. 1
is a perspective view of the above coaxial connector and
FIG. 2
is a sectional view of the connector.
As shown in
FIGS. 1 and 2
, a shield wire
1
is provided with a core line
1
a
, an insulating inner rind
1
b
, and a braided wire
1
c
all of which are exposed from an insulating outer rind
1
d
at the end of the wire
1
. A rod-shaped terminal
2
is press-fitted to the exposed core
1
a
. A shield member
3
includes a terminal retainer
3
a
in the form of a rectangular box, and a pair of shield pieces
3
b
,
3
c
connected with the terminal retainer
3
a
through a hinge
4
. A terminal insertion hole
5
is formed in the terminal retainer
3
a
. The terminal
2
is adapted so as to be connected with the shield wire
1
and inserted into the terminal inserting hole
5
.
The pair of shield pieces
3
b
,
3
c
are formed so as to be displaceable from an opening position for opening their abutting faces to the closing position for abutting the abutting faces against each other. Each of the shield pieces
3
b
,
3
c
is provided, on an end face thereof, with a contact face
6
for contact with the braided wire
1
c
of the shield wire
1
.
With the above-mentioned constitution, the terminal
2
connected to the shield wire
1
is inserted into the shield member
3
through an opening between the shield pieces
3
b
,
3
c
and further inserted into the terminal insertion hole
5
. Next, the pair of shield pieces
3
b
,
3
c
are closed, so that the abutting faces abut on each outer while the respective contact faces
6
come in contact with the braided wire
1
c
. Consequently, the terminal
2
is electrically connected with the shield member
3
, while the terminal
2
and the exposed tore
1
a
are magnetically insulated from the outside by the shield member
3
.
Japanese Patent Publication (kokai) No. 7-22107 discloses a high-frequency coaxial connector.
FIG. 3
is a sectional view of the above coaxial connector before assembling an insulating member and
FIG. 4
is a sectional view of the connector after assembling the member.
As shown in
FIGS. 3 and 4
, a shield wire
1
′ is provided with the core line
1
a
, the insulating inner rind
1
b
, and the braided wire
1
c
all of which are exposed from the insulating outer rind
1
d
at the end of the wire
1
. An inner terminal
2
′ is electrically connected to the exposed core
1
a
. A shield terminal
7
includes a retainer
7
a
in the form of a rectangular cylinder, a “braided wire” press-fitting part
7
b
extended from the rear end of the retainer
7
a
and a “insulating rind” press-fitting part
7
c
succeeding to the part
7
b
. In the rectangular cylindrical retainer
7
a
, an inner housing
8
is arranged to accommodate the terminal and provided with a groove part
8
a
. Respective openings
7
d
,
8
d
are formed on the retainer
7
a
and the top face of the inner housing
8
, respectively. The openings
7
d
,
8
d
are adapted so as to be covered with a covering member
9
.
With the above-mentioned constitution, the inner terminal
2
′ connected to the shield wire
1
′ is inserted into the groove part a of the inner housing
8
through the respective opening
7
d
of the terminal
7
and the opening
8
d
of the inner housing
8
. Next, the covering member
9
is attached to the inner housing
8
to close the opening
8
d
. Further, by crimping the press-fitting parts
7
b
,
7
c
, the press-fitting part
3
b
is pressure-connected to the braided wire
1
c
while the press-fitting part
7
c
is pressure-connected to the insulating outer rind
1
d
. In this manner, the inner terminal
2
′ is electrically connected with the shield terminal
7
, while the terminal
2
′ and the exposed core
1
c
are magnetically insulated from the outside by the shield terminal
7
, similar to the previously-mentioned prior art.
In the former prior art, however, there is a problem of incomplete assembly with the result being that the pair of shield pieces
3
b
,
3
c
are easily deformed by an external force in a direction to separate the pieces
3
b
,
3
c
from each other because the contact between the respective faces
6
and the braided wire
1
c
of the shield wire
1
is attained owing to the plastic deformation of the shield pieces
3
b
,
3
c
of the shield member
3
. In detail, if the shield pieces
3
b
,
3
e
are subjected to an external force to open them, then there is easily produced a clearance between the opposing faces of the shield pieces
3
b
,
3
c
, so that a electrical contact between the faces
6
and the braided wire
14
becomes incomplete, thereby deteriorating the shielding capability.
In the latter prior art, conversely, the assembling condition is stable owing to the arrangement where the shield terminal
7
is connected to the shield wire
1
′ through the press-fitting part
3
b
for the braided wire
1
c
and the press-fitting part
7
c
for the insulating out rind
1
d
. However, since the rear opening d. of the shield terminal
7
and the rear opening d. of the inner housing
8
are respectively closed by the covering member
9
, the number of components is so large that the number of assembly steps is increased, causing an increase in manufacturing costs. Additionally noted, unless the opening d., d. are closed by the covering opening
9
, the shielding capability would be deteriorated in a high-frequency band range, particularly.
SUMMARY OF THE INVENTION
Under such a circumstance, it is therefore an object of the present invention to provide an end structure for a coaxial connector which is complete in its assembling condition and capable of maintaining the shielding capability without increasing the number of components and assembling steps.
Further, it is another object to provide a method of treating the end of the coaxial connector.
The objects of the present invention described above can be accomplished by an end structure for a coaxial connector comprising:
a shield wire having a conductive core, an insulating inner rind covering the core, a conductive braided wire covering the insulating inner rind and an insulating outer rind covering the braided wire, the shield wire being partially peeled at an end thereof so as to expose the core, the insulating inner rind and the braided wire;
an inner terminal to be press-fitted to the exposed core for electrical connection;
an inner housing made of insulating material, the inner housing having an inner terminal accommodating part formed for accommodating the inner terminal inserted thereinto;
a shield terminal to be assembled to the inner terminal and the exposed braided wire through the inner housing so as to attain an electrical connection with the braided wire, the shield terminal being configured to be connectable with the exposed braided wire by the shield terminal's press-fitting so as to cover at least the inner terminal and the exposed insulating inner rind;
wherein the shield terminal includes:
a bottom part;
a pair of half-box parts formed to stand on both sides of the bottom part integrally and allow of plastic deformation due to press-fitting to their closing position where respective opposing end faces of the half-box parts butt each other; and
a pair of press-fitting parts formed to stand on both sides of the bottom part and also configured to be connectable with the exposed braided wire by the press-fitting parts' press-fitting;
whereby the inner housing, the inner terminal and the exposed braided wire's part on the insulating inner rind's side are covered with the pair of half-box parts being deformed to their closing position, while the exposed braided wire is connected to the pair of press-fitting parts since they are press-fitted to the exposed braided wire.
With the above-mentioned structure, it is possible to complete the assembling of the shield terminal to the shield wire and improve the shielding capability of the coaxial connector without increasing the number of components and assembling steps. Additionally, with no increase in number of components and assembling steps, the manufacturing cost can be saved.
According to the second aspect of the invention, in the above-mentioned invention, the whole periphery of the inner housing is brought into contact with the opposing end faces on the side of respective front ends of the half-box parts being deformed to their closing position, while the whole periphery of the braided wire is brought into contact with the opposing end faces on the side of respective rear ends of the half-box parts being deformed to their closing position.
In this case, since the inner terminal and the exposed braided wire of the shield wire are covered with the pair of half-box parts of the shield terminal in general perfect, the shielding capability is further improved.
According to the third aspect of the invention, in the above-mentioned invention, the inner housing is provided, in the inner terminal accommodating part, with a flexible hook for engagement with the inner terminal.
In this case, owing to the provision of the flexible hook, the connection
According to the fourth aspect of the invention, in addition to the above constituents of the end structure, it may comprise an outer housing made of insulating material and having a terminal accommodating part formed for accommodating the shield terminal being assembled to the shield wire, wherein the shield terminal has a lower engagement claw formed on the bottom part for engagement with the outer housing and upper engagement claws formed on the half-box parts for engagement with the outer housing.
In this case, owing to the addition of the outer housing, the shielding capability of the coaxial connector is further improved. Furthermore, owing to the provision of the respective claws, the connection between the outer housing and the shield terminal is further strengthened.
According to the fifth aspect of the invention, the end structure may further comprise a spacer for locking the shield terminal accommodated in the outer housing, wherein the outer housing has a spacer insertion hole allowing the spacer to be inserted thereinto.
In this case, owing to the insertion of the spacer into the outer housing, the shield terminal is accommodated in the outer housing stably.
According to the sixth aspect of the present invention, there is also provided a method of treating an end of a coaxial connector, comprising the steps of:
preparing a shield wire consisting of a conductive core, an insulating inner rind covering the core, a conductive braided wire covering the insulating inner rind and an insulating outer rind covering the braided wire:
peeling the shield wire partially so as to expose the core, the insulating inner rind and the braided wire;
preparing an inner terminal and sequentially press-fitting the inner terminal to the exposed core for electrical connection;
preparing an inner housing made of insulating material, the inner housing having an inner terminal accommodating part formed for accommodating the inner terminal inserted thereinto;
preparing a shield terminal made of conductive metal, the shield terminal including:
a bottom part;
a pair of half-box parts formed to stand on both sides of the bottom part integrally and allow of plastic deformation due to press-fitting to their closing position where respective opposing end faces of the half-box parts butt each other; and
a pair of press-fitting parts formed to stand on both sides of the bottom part and also configured to be connectable with the exposed braided wire by the press-fitting parts' press-fitting;
inserting the inner terminal into the inner housing through a rear opening thereof, thereby completing an inner housing assembly;
installing the inner housing assembly into the shield terminal through a clearance between the pair of half-box parts in their opening position;
press-fitting the insulating outer rind and the exposed braided wire of the shield wire to the press-fitting parts of the shield terminal by using a press-fitting machine; and simultaneously
press-fitting the pair of half-box parts in the opening position thereby to close them by using the press-fitting machine.
According to the above method, since the shield terminal closing process is carried out simultaneously with the crimping process to fit the braided wire under pressure and the crimping process to fit the insulating outer rind under pressure, the number of components and assembling steps is reduced, so that the assembling process can be executed effectively.
According to the seventh aspect of the present invention, in the above method, it further comprises the steps of:
preparing an outer housing made of insulating material and having a terminal accommodating part formed for accommodating the shield terminal being assembled to the shield wire; and
accommodating the shield terminal in the terminal accommodating part of the outer housing.
In this case, owing to the addition of the above steps, the shielding capability of the coaxial connector is further improved.
According to the eighth aspect of the invention, the above method further comprises the steps of:
preparing a spacer for locking the shield terminal accommodated in the outer housing; and
inserting the spacer into the outer housing, thereby locking the shield terminal in the outer housing.
In this case, owing to the addition of the above steps, the shield terminal is accommodated in the outer housing stably.
According to the ninth aspect of the invention, in the above method, the shield terminal has a lower engagement claw formed on the bottom part for engagement with the outer housing and upper engagement claws formed on the half-box parts for engagement with the outer housing.
In this case, owing to the provision of the respective claws, the connection between the outer housing and the shield terminal is further strengthened.
These and other objects and features of the present invention will become more fully apparent from the following description and appended claims taken in conjunction with the accompany drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1
is an exploded perspective view of a coaxial connector in the prior art;
FIG. 2
is a sectional view of the coaxial connector of
FIG. 1
;
FIG. 3
is a sectional view of another coaxial connector in the prior art, showing a condition before fitting a covering member;
FIG. 4
is a sectional view of the coaxial connector of
FIG. 3
, showing a condition after fitting the covering member;
FIG. 5
is a sectional view of an end structure of a coaxial connector in accordance with an embodiment of the present invention, showing a condition that an inner housing assembly for the end structure is assembled into a shield terminal;
FIG. 6
is a sectional view of the end structure, showing a condition before assembling a shield wire for the end structure of the coaxial connector to an inner terminal;
FIG. 7
is a sectional view of the end structure, showing a condition before further assembling the inner terminal connected to the shield wire into an inner housing;
FIG. 8
is a sectional view of the inner housing assembly where the inner housing is assembled to the inner terminal;
FIG. 9A
is a sectional view of the end structure, showing a condition in process of fitting the inner housing assembly to the shield terminal;
FIG. 9B
is a plan view of
FIG. 9A
;
FIG. 9C
is a longitudinal sectional view of
FIG. 9A
;
FIG. 10A
is a sectional view of the end structure, showing a condition before applying press-fitting on the shield terminal by using a press fitting machine;
FIG. 10B
is a longitudinal sectional view of
FIG. 10A
;
FIG. 11A
is a sectional view showing a condition after press-fitting the shield terminal by the press fitting machine;
FIG. 11B
is a longitudinal sectional view of
FIG. 11A
;
FIG. 12
is a sectional view of the end structure, showing a condition before fitting the shield terminal to an outer housing;
FIG. 13
is a sectional view of the end structure, showing a condition after fitting the shield terminal to the outer housing;
FIG. 14
is a sectional view of the end structure, showing a condition before inserting a spacer into the outer housing; and
FIG. 15
is a sectional view of the end structure, showing a condition after inserting the spacer into the outer housing.
DESCRIPTION OF THE PREFERRED EMBODIMENT
One embodiment of the present invention will be described with reference to the drawings.
FIGS. 5
to
15
show an end structure of a high-frequency coaxial connector of the embodiment, also showing sequent steps of assembling the coaxial connector in accordance with a terminal treatment method of the invention. First described is the end structure of the coaxial connector and constituent members used in the end treating method and subsequently described are assembling the coaxial connector.
As shown in
FIGS. 14 and 15
, the high-frequency coaxial connector
10
comprises a shield wire (i.e. coaxial cable)
20
, a female inner terminal
30
, a synthetic inner housing
40
, a shield terminal
50
and a synthetic outer housing
60
.
As shown in
FIGS. 5
to
15
, the shield wire
20
is constituted by a core (bundle of lines)
21
of a conductor, an insulating inner rind
22
covering the core
21
, a braided wire
23
as a shielding element around the insulating inner rind
22
, and an insulating outer rind
24
arranged around the braided wire
23
for covering the core
21
, the insulating inner rind
22
and the braided wire
23
. At one end of the shield wire
20
, it is peeled so as to expose the core
21
, the insulating inner rind
22
and the braided wire
23
respectively.
As shown in
FIGS. 6 and 7
, the inner terminal
30
includes a terminal accommodating part
31
in the form of a rectangular cylinder, which is formed at the tip of the terminal
30
for allowing the mating terminal to be inserted for electrical contact, a bottom plate
32
formed integrally with the bottom part of the part
31
and a pair of press-fitting parts
33
,
33
for the core
21
, which are formed to stand on both rear sides of the bottom plate
32
upward. The pair of press-fitting parts
33
,
33
are adapted so as to be press-fitted to the core
21
of the shield wire
20
by the crimping operation of a not-shown press-fitting machine.
As shown in
FIGS. 7 and 8
, the inner housing
40
is constituted by a molded insulating member and provided, inside thereof, with an inner terminal accommodating part
41
. The inner terminal accommodating part
41
has a front wall provided with a terminal insertion hole
42
into which the mating terminal is to be inserted. The inner housing
40
is further provided with a rear opening
43
through which the inner terminal
30
is inserted into the inner terminal accommodating part
41
. The inserted inner terminal
30
is locked in the inner housing
40
through a flexible upper hook
41
a
on the rear side of the inner terminal accommodating part
41
. As shown in
FIG. 8
, the inner terminal
30
is inserted into the inner housing
40
through the rear opening
43
, thereby completing an inner housing assembly
11
.
As shown in
FIGS. 5 and 9A
to
15
, the shield terminal
50
is provided by folding a conductive metal plate and comprises a bottom part
51
, a pair of half-box parts
52
,
52
standing on both sides of the bottom part
51
and capable of plastic deformation to a closed position where their opposing end faces
52
a
,
52
a
are brought into contact with each other by press-fitting. A pair, of press-fitting pieces (press-fitting parts)
53
,
53
for the braided wire are formed to stand on both sides of the rear portion of the bottom part
51
are press-fitted to the exposed braided wire
23
of the shield wire
20
by press-fitting. A pair of press-fitting pieces (press-fitting parts)
54
,
54
for the insulating outer rind are provided, which are formed to stand on both sides of the rear end of the bottom part '
51
and are also press-fitted to the insulating outer rind
24
of the shield wire
20
.
The shield terminal
50
is provided, on the bottom part
51
, with a lower engagement claw
51
a
. The pair of half-box parts
52
,
52
are capable of plastic deformation from their opening position to open a space between the opposing end faces
52
a
,
52
a
to the closing position where the end faces
52
a
,
52
a
comes into contact with each other The shield terminal
50
is constructed so that, in case of closing the half-box parts
52
a
,
52
a
, respective inner faces
52
b
(on the front side of insertion) of the half-box parts
52
,
52
come into contact the whole periphery of the inner housing
40
while respective inner faces
52
c
(on the rear side of insertion) come into contact the whole periphery of the braided wire
23
. Additionally, the shield terminal
50
has an upper engagement claw
52
d
formed on each top of the half-box parts
52
,
52
. The pair of half-box parts
52
,
52
are adapted so as to be closed by a press-fitting machine
70
shown in
FIGS. 10A
,
10
B and
11
A,
11
B. At the closing of the pair of half-box parts
52
,
52
, they cover the inner housing
40
, the inner terminal
30
and the insulating inner rind
22
of the exposed braided wire
23
, while the exposed braided wire
23
and the insulating outer rind
24
of the shield wire
20
are press-fitted to the pair of press-fitting pieces
53
,
53
and the pair of press-fitting pieces
54
,
54
, respectively.
As shown in
FIG. 12
, the outer housing
60
is constituted by a insulating member molded in the form of a rectangular cylinder and also provided, inside thereof, with a terminal accommodating part
61
for accommodating the shield terminal
50
. In front of the terminal accommodating part
61
, a hood part
62
for fitting the mating terminal is formed to communicate with the part
61
. Formed on the top wall of the outer housing
60
is a spacer-inserting hole
63
into which a synthetic spacer
65
is to be inserted and which opens to the terminal accommodating part
61
.
As shown in
FIGS. 10A
,
10
B and
11
A,
11
B, the press-fitting machine
70
includes an immovable mount
71
for mounting the shield terminal
50
assembled into the inner housing
11
, a pair of side jigs
72
,
72
disposed on both sides of the mount
71
to slide up and down, an upper front jig
73
capable of sliding up and down and an upper rear jig
74
also capable of sliding up and down.
Next, the assembling steps of the coaxial connector
10
will be described with reference to
FIGS. 5
to
15
. First of all, in the treatment for the wire end, it is executed to peel the end of the shield wire
20
in order to expose the core
21
, the insulating inner rind
22
and the braided wire
23
, as shown in
FIGS. 5
to
7
.
Next, as shown in
FIG. 6
, the core
21
of the shield wire
20
is disposed between the pair of the press-fitting parts
33
,
33
of the inner terminal
30
and subsequently crimped to connect the core
21
to the inner terminal
30
by press-fitting. Thereafter, as shown in
FIG. 7
, the inner terminal
30
is accommodated in the inner-terminal accommodating part
41
of the inner housing
40
through the rear opening
43
, thereby completing the inner housing assembly
11
of FIG.
8
. That is, in this inner-terminal treatment process to assemble the inner terminal
30
into the inner housing
40
, the inner terminal
30
is electrically connected to the exposed core
21
of the shield wire
20
.
Next, as shown in
FIGS. 9A
to
9
C, the above inner housing assembly
11
is inserted between the pair of half-box parts
52
,
52
of the shield terminal
50
through the opening between the half-box parts
52
,
52
. Simultaneously, the shield wire
20
is positioned so as to dispose its end portion between the press-fitting pieces
52
,
53
(for the braided wire) and also between the press-fitting pieces
54
,
54
(for the insulating outer rind) upon the temporary installation. Thereafter, the built-in shield terminal
50
is laid on the mount
71
of the press-fitting machine
70
. Then, as shown with arrows in
FIGS. 10A and 10B
, the pair of side jigs
72
,
72
are slid from their lowermost positions to the uppermost positions while sliding the upper front jig
73
and the upper rear jig
74
from their upper most position toward the lowermost positions.
Consequently, as shown in
FIGS. 11A and 11B
, the pair of side jigs
72
,
72
operate to press the pair of half-box parts
52
,
52
of the shield terminal
50
to the direction to approach the end faces
52
a
,
52
a
each other, while the upper front jig
73
presses the top faces of the half-box parts
52
,
52
downward. In this way, the pair of half-box parts
52
,
52
are plastically deformed from their opening state to their closing state. Under this closing condition, the opposing end faces
52
a
,
52
a
of the pair of half-box parts
52
,
52
butts each other and the inner faces
52
b
,
52
b
come into contact with the whole periphery of the inner housing
40
while the inner faces
52
c
,
52
c
come into contact with the whole periphery of the braided wire
23
of the shield wire
20
. Thus, in this arrangement, the pair of half-box parts
52
,
52
of the shield terminal
50
do cover the inner terminal
30
and a part of braided wire
23
on the side of the insulating inner rind
22
generally completely.
Further, the upper rear jig
74
of the press-fitting machine
70
downward presses the respective press-fitting pieces
53
,
53
for braided wire and the respective press-fitting pieces
54
,
54
for insulating outer rind for crimping, so that the respective press-fitting pieces
53
,
53
are pressure-fitted to the braided wire
23
and the respective press-fitting pieces
54
,
54
are pressure-fitted to the insulating outer rind
24
owing to this crimping. That is, according to the embodiment, it is simultaneously carried out to close the shield terminal
50
and crimp both braided wire
23
and insulating outer rind
24
.
Next, as shown in
FIG. 12
, when the shield terminal
50
assembled to the end of the shield wire
20
is accommodated in the terminal accommodating part
61
of the outer housing
60
, then the lower claw
51
a
and the upper claws
52
d
,
52
d
are engaged on the inner wall of the terminal accommodating part
61
of the outer housing
60
to lock the terminal
50
in the outer housing
60
, as shown in FIG.
13
.
Next, as shown in
FIG. 14
, the spacer
65
is inserted into the spacer insertion hole
63
of the outer housing
60
. Consequently, as shown in
FIG. 15
, the spacer
65
comes into contact with respective rear ends of the half-box parts
52
,
52
to lock the shield terminal
50
in double. That is, it is executed to fit the outer housing
60
about the periphery of the shield terminal
50
in the outer housing fitting process, completing the assembling of the coaxial connector
10
.
In the crimping process about the braided wire
23
in the above assembling process, owing to the press-fitting operation of the respective press-fitting pieces
53
,
53
onto the braided wire
23
, the shield terminal
50
is electrically connected to the braided wire
23
while the shield terminal
50
is secured to the shield wire
20
. Note, since the crimping on the insulating outer rind's side allows the shield terminal
50
to be fixed to the insulating outer rind
24
in the above-mentioned embodiment, the shield terminal
50
is fixed to the shield wire
20
strongly.
Again, in the closing process of the shield terminal
50
in the assembling process, when the pair of half-box parts
52
,
52
are plastically deformed into the closing position, then the opposing end faces
52
a
,
52
a
of the pair of half-box parts
52
,
52
butt each other, while the end faces
52
b
,
52
b
come into contact with the whole periphery of the inner housing
40
and the end faces
52
c
,
52
c
come into contact with the whole periphery of the braided wire
23
. Thus, the pair of half-box parts
52
,
52
of the shield terminal
50
do cover the inner terminal
30
and the part of braided wire
23
on the side of the insulating inner rind
22
generally completely. Consequently, in even a high-frequency band range, the superior shielding capability can be effected by the single shield terminal
50
. Therefore, according to the embodiment, there is no need of the conventional shield members, neither causing to increase the number of components nor that of assembling steps.
Additionally, since the shield terminal closing process is carried out simultaneously to the crimping process to fit the braided wire
23
under pressure and the crimping process to fit the insulating outer rind
24
under pressure, the processing of the shield terminal
50
can be performed by one press-fitting process in the press-fitting machine
70
, whereby the assembling process can be executed effectively.
Finally, it will be understood by those skilled in the art that the foregoing description is one of preferred embodiments of the disclosed end structure of the coaxial connector and the treating method, and that various changes and modifications may be made to the present invention without departing from the spirit and scope of the invention.
For example, although the shield terminal is provided with a pair of half-box parts and respective press-fitting pieces for both braided wire and insulating outer rind in the above-mentioned embodiment, the present invention is applicable to a shield terminal having a pair of half-box parts and press-fitting pieces for braided wire only. Further, although the inner terminal in the shown embodiment is identical to a female terminal, of course, the present invention is also applicable to a male inner terminal.
Claims
- 1. An end structure for a coaxial connector comprising:a shield wire having a conductive core, an insulating inner rind covering the core, a conductive braided wire covering the insulating inner rind and an insulating outer rind covering the braided wire, the shield wire being partially peeled at an end thereof so as to expose the core, the insulating inner rind and the braided wire; an inner terminal for being press-fitted to the exposed core for electrical connection; an inner housing made of insulating material, the inner housing having an inner terminal accommodating part formed for accommodating the inner terminal inserted thereinto; a shield terminal for being assembled to the inner housing and the exposed braided wire so as to attain an electrical connection with the braided wire, the shield terminal being configured to be connectable with the exposed braided wire by press-fitting of the shield terminal so as to cover at least the inner terminal and the exposed insulating inner rind; wherein the shield terminal includes: a bottom part; a pair of half-box parts formed to stand on both sides of the bottom part integrally and allow plastic deformation due to press-fitting to their closing position where respective opposing end faces of the half-box parts abut each other; and a pair of press-fitting parts formed to stand on both sides of the bottom part also configured to be connectable with the exposed braided wire by press fitting of the press-fitting together; wherein the inner housing, inner terminal and the exposed braided wire's part on the insulating inner rinds side are covered with the pair of half-box parts being deformed to their closing position, while the exposed braided wire is connected to the pair of press-fitting parts by the press-fitting parts being press-fitted to the exposed braided wire; and wherein the inner housing is provided, in the inner terminal accommodating part, with a flexible hook for engagement with the inner terminal.
- 2. An end structure as claimed in claim 1, wherein the whole periphery of the inner housing is brought into contact with the opposing end faces on the side of respective front ends of the half-box parts being deformed to their closing position, while the whole periphery of the braided wire is brought into contact with the opposing end faces on the side of respective rear ends of the half-box parts being deformed to their closing position.
- 3. An end structure as claimed in claim 2, further comprising an outer housing made of insulating material and having a terminal accommodating part formed for accommodating the shield terminal being assembled to the shield wire, wherein the shield terminal has a lower engagement claw formed on the bottom part for engagement with the outer housing and upper engagement claws formed on the half-box parts for engagement with the outer housing.
- 4. An end structure for a coaxial connector comprising:a shield wire having a conductive core, an insulating inner rind covering the core, a conductive braided wire covering the insulating inner rind and an insulating outer rind covering the braided wire, the shield wire being partially peeled at an end thereof so as to expose the core, the insulating inner rind and the braided wire; an inner terminal for being press-fitted to the exposed core for electrical connection; an inner housing made of insulating material, the inner housing having inner terminal accommodating part formed for accommodating the inner terminal inserted therein; a shield terminal for being assembled to the inner terminal and the exposed braided wire through the inner housing so as to attain an electrical connection with the braided wire, the shield terminal being configured to be connectable with the exposed braided wire by the shield terminal's press-fitting so as to cover at least the inner terminal and the exposed insulating inner rind; wherein the shield terminal includes: a bottom part; a pair of half-box parts formed to stand on both sides of the bottom part integrally and allow plastic deformation due to press-fitting to their closing position where respective opposing end faces of the half-box parts butt each other; and a pair of press-fitting parts formed to stand on both sides of the bottom part and also configured to be connectable with the exposed braided wire by the press-fitting parts' press-fitting; wherein the inner housing, the inner terminal and the exposed braided wire's part on the insulating inner rind's side are covered with the pair of half-box parts being deformed to their closing position, while the exposed braided wire is connected to the pair of press-fitting parts for being press-fitted to the exposed braided wire; and a spacer for locking the shield terminal accommodated in the outer housing, wherein the outer housing has a spacer inserting hole allowing the spacer to be inserted thereinto.
Priority Claims (1)
Number |
Date |
Country |
Kind |
11-029178 |
Feb 1999 |
JP |
|
US Referenced Citations (10)
Foreign Referenced Citations (4)
Number |
Date |
Country |
55-129383 |
Sep 1980 |
JP |
2-273481 |
Nov 1990 |
JP |
4-52371 |
May 1992 |
JP |
7-22107 |
Jan 1995 |
JP |