Information
-
Patent Grant
-
6554653
-
Patent Number
6,554,653
-
Date Filed
Friday, March 16, 200125 years ago
-
Date Issued
Tuesday, April 29, 200322 years ago
-
Inventors
-
Original Assignees
-
Examiners
- Bradley; P. Austin
- Nguyen; Truc
Agents
-
CPC
-
US Classifications
Field of Search
US
- 439 676
- 439 941
- 439 761
-
International Classifications
-
Abstract
An electrical connector including a spring mounting body having a clip receiving structure. A plurality of contact springs are mounted on the spring mounting body. A clip is inserted within the clip receiving structure to stabilize the contact springs. Portions of the contact springs are captured between the clip and the spring mounting body. A method for assembling the electrical connector is also disclosed.
Description
FIELD OF THE INVENTION
The present invention relates generally to telecommunications connectors and to methods for assembling telecommunications connectors.
BACKGROUND OF THE INVENTION
Modular connectors such as modular plugs and modular jacks are commonly used in the telecommunications industry.
FIG. 1
illustrates an exemplary modular connector
20
(e.g., an RJ45 connector). The connector
20
includes eight spring contacts numbered from one to eight. The eight contacts form four separate circuits or pairs for conveying twisted pair (e.g., tip and ring) signals.
FIG. 1
shows a conventional pairing configuration in which springs
4
and
5
form a first circuit, springs
3
and
6
form a second circuit, springs
1
and
2
form a third circuit, and springs
7
and
8
form a fourth circuit.
Crosstalk can be a significant source of interference in telecommunications systems. Crosstalk is typically caused by the unintentional transfer of energy from one signal pair to another. Commonly, the transfer of energy is caused by inductive or capacitive coupling between the conductors of different circuits. Crosstalk is particularly problematic in modular connectors because of the close spacing of the contact springs. The most severe crosstalk frequently occurs between the two inside circuits of a modular connector (i.e., the circuits formed by contact springs
4
,
5
and
3
,
6
).
To reduce crosstalk, a variety of different spring configurations have been developed. Often, the spring shapes are quite complicated and the springs can be difficult to assemble and maintain in the desired orientations suitable for reducing crosstalk. What is needed is an improved method for assembling contact springs in a telecommunications connector.
SUMMARY OF THE INVENTION
One aspect of the present invention relates to an electrical connector including a spring mounting body having a clip receiving structure. A plurality of contact springs are mounted on the spring mounting body. A clip is inserted within the clip receiving structure to stabilize the contact springs. Portions of the contact springs are captured between the clip and the spring mounting body.
A method for mounting telecommunication connector springs including providing a dielectric spring mounting body, and positioning a plurality of contact springs at desired locations on the spring mounting body. The method also includes stabilizing the contact springs by capturing portions of the contact springs between the spring mounting body and a dielectric clip. The method further includes connecting the clip to the spring mounting body with the captured portions of the contact springs remaining captured after the clip has been connected to the spring mounting body.
A variety of advantages of the invention will be set forth in part in the description that follows, and in part will be apparent from the description, or may be learned by practicing the invention. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate several aspects of the invention and together with the description, serve to explain the principles of the invention. A brief description of the drawings is as follows:
FIG. 1
schematically shows a prior art modular jack;
FIG. 2A
is an exploded, front perspective view of a modular jack constructed in accordance with the principles of the present invention;
FIG. 2B
is an exploded, rear perspective view of the modular jack of
FIG. 2A
;
FIG. 3
is a front view of the jack of
FIG. 2
with a modular plug inserted therein;
FIG. 4
is a cross-sectional view taken along section line
4
—
4
of
FIG. 3
;
FIG. 5A
is a perspective view of the springs and circuit board of the modular jack of
FIG. 2
, the springs are illustrated in a deflected orientation;
FIG. 5B
is a top, plan view of the springs and circuit board of
FIG. 5A
;
FIG. 5C
is an elevational view of the circuit board and deflected springs of
FIG. 5A
;
FIG. 6
is a cross-sectional view taken along section line
6
—
6
of
FIG. 5B
, the spring is shown in a deflected orientation and in a non-deflected orientation;
FIG. 7
is a cross-sectional view taken along section line
7
—
7
of
FIG. 5B
, the spring is shown in a deflected orientation and in a non-deflected orientation;
FIG. 8
is a cross-sectional view taken along section line
8
—
8
of
FIG. 5B
, the spring is shown in a deflected orientation and in a non-deflected orientation;
FIG. 9A
is a front, top perspective view of an insert body constructed in accordance with the principles of the present invention;
FIG. 9B
is a bottom, front perspective view of the insert body of
FIG. 9A
;
FIG. 10
is a cross-sectional view of the jack of
FIGS. 2A and 2B
with the jack being cut through one of the front springs;
FIG. 11
is a cross-sectional view of the jack of
FIGS. 2A and 2B
with the jack being cut through one of the middle springs;
FIG. 12
is a cross-sectional view of the jack of
FIGS. 2A and 2B
with the jack being cut through one of the rear springs;
FIG. 13
is a bottom perspective view of the insert body of
FIGS. 9A and 9B
with contact springs mounted therein;
FIG. 14
is a side elevational view of the insert body of
FIGS. 9A and 9B
with springs secured thereto by a retainer clip;
FIG. 15
is a perspective view of the insert body of
FIGS. 9A and 9B
with springs secured thereto by a retainer clip;
FIG. 16A
is a rear, top perspective view of the retainer clip of
FIGS. 14 and 15
;
FIG. 16B
is a front, top perspective view of the retainer clip of
FIG. 16A
;
FIG. 16C
is a rear, bottom perspective view of the retainer clip of
FIG. 16A
;
FIG. 16D
is a bottom plan view of the retainer clip of
FIG. 16A
;
FIG. 16E
is a top plan view of the retainer clip of
FIG. 16A
;
FIG. 17
is an exploded view showing the insert body and springs of
FIGS. 14 and 15
positioned in alignment with a printed circuit board; and
FIG. 18
is a front, perspective view showing the printed circuit board and insert body of
FIG. 17
connected together.
DETAILED DESCRIPTION
Reference will now be made in detail to exemplary aspects of the present invention that are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.
FIGS. 2A and 2B
illustrate a modular jack
30
constructed in accordance with the principles of the present invention. The modular jack
30
includes a housing
32
and an insert assembly
34
adapted to snap fit within the housing
32
. The insert assembly
34
includes an insert body
36
, a circuit board
42
, a spring retaining clip
230
and a plurality of contact springs
44
(e.g., eight contact springs). Insulation displacement connectors
38
are provided on a top side of the insert body
36
. The springs
44
are secured to the insert body
36
by the retaining clip
230
. When assembled, the circuit board
42
mounts to a bottom side of the insert body
36
, and the contact springs
44
extend above the top side of the insert body
36
. Tracings (not shown) on the circuit board
42
provide electrical connections between the contact springs
44
and respective ones of the insulation displacement connectors
38
. Details relating to a circuit board tracing configuration suitable for use with the present invention are disclosed in U.S. Pat. No. 6,089,923 issued Jul. 18, 2000, which is hereby incorporated by reference.
To mount the insert assembly
34
in the housing
32
, the insert assembly
34
is placed in a channel
41
of the housing
32
. The insert assembly
34
is then slid toward the front of the housing
32
until resilient locking tabs
46
of the insert body
36
snap fit within corresponding openings
48
defined by the housing
32
. When the insert assembly
34
is snap fit within the housing
32
, the springs
44
of the insert assembly
34
are separated by a divider
39
positioned within the housing
32
.
FIG. 3
shows a modular plug
50
inserted within a port
52
defined by a front side
54
of the housing
32
. The plug
50
includes eight contacts
56
that provide electrical connections with the contact springs
44
of the modular jack
30
when the plug
50
is inserted within the port
52
. For example,
FIG. 4
shows one of the contacts
56
in electrical contact with one of the contact springs
44
. As shown in
FIG. 4
, the contact springs
44
have been pushed into a deflected orientation by the contacts
56
. For the purpose of this application, the phrase “deflected orientation” is intended to mean the orientation of the contact springs
44
when the plug
50
is inserted within the port
52
. For clarity, the insert body
36
is not shown in FIG.
4
.
Electrical contact between the contacts
56
and the contact springs
44
is preferably made along a single line of contact
58
. The line of contact
58
is best shown schematically at FIG.
5
A. For clarity purposes, the plug
50
is not shown in
FIG. 5A
such that the springs
44
are more clearly visible.
FIGS. 5A-5C
illustrate the circuit board
42
and the contact springs
44
in isolation from the remainder of the modular jack
30
. In all of
FIGS. 5A-5C
, the contact springs
44
have been depicted in the deflected orientation of FIG.
4
.
Referring now to
FIG. 5B
, the contact springs
44
are located at eight separate spring positions numbered
1
-
8
. Similar to the prior art pin assignment of
FIG. 1
, the contact springs at positions
4
and
5
preferably form a first pair, the contact springs at positions
3
and
6
preferably perform a second pair, the contact springs at positions
1
and
2
preferably form a third pair, and the contact springs at positions
7
and
8
preferably form a fourth pair. Other pairings can also be used.
The contact springs
44
preferably include springs having three different geometric configurations. For example, the contact springs
44
are shown including four front springs
60
, two middle springs
62
and two rear springs
64
. Preferably, the front springs
60
are located at spring positions
2
,
4
,
6
and
8
; the middle springs
62
are located at spring positions
1
and
7
; and the rear springs
64
are located at spring positions
3
and
5
. As will be described later in the specification, the front and middle springs
60
and
62
preferably comprise rearwardly extending springs, and the rear springs
64
preferably comprise forwardly extending springs.
Referring again to
FIG. 5B
, the front, middle and rear springs
60
,
62
and
64
respectively include terminal ends
66
,
68
and
70
(i.e., posts) that terminate within the circuit board
42
. The terminal ends
66
of the front springs
60
are aligned along a front reference line
72
, the terminal ends
68
of the middle springs
62
are aligned along a middle reference line
74
, and the terminal ends
70
of the rear springs
64
are aligned along a rear reference line
76
. The middle reference line
74
is positioned between the front and rear reference lines
72
and
76
. Preferably, the reference lines
72
,
74
and
76
are substantially parallel. The spacing between the reference lines
72
,
74
and
76
provide staggering between the terminal ends
66
,
68
and
70
. This staggering is advantageous because additional space is provided for terminating the springs
44
at the circuit board
42
(e.g., clearance for solder pads is provided). Clearance is also provided for allowing transmission lines to be passed between the springs
44
.
FIG. 6
shows one of the front springs
60
in both a deflected orientation
78
and in a non-deflected orientation
80
. The terminal end
66
of the front spring
60
is shown extending through the circuit board
42
. The circuit board
42
includes a front end
82
adapted to be positioned at the front side
54
of the housing
32
and a rear end
84
adapted to be positioned at the rear side
31
of the housing
32
.
Referring still to
FIG. 6
, the terminal end
66
of the front spring
60
extends vertically upward from the circuit board
42
. A forward extension
86
extends in a forward direction from the terminal end
66
. A first bend
88
(e.g., a bend of about 90 degrees) interconnects the terminal end
66
and the forward extension
86
. The forward extension
86
preferably extends slightly upward as it extends in the forward direction. A second bend
90
reverses the direction in which the forward extension
86
extends. For example, the second bend reverses the direction of the spring
60
from a forward direction at the forward extension
86
, to a rearward direction at a proximal portion
92
of the front spring
60
.
The proximal portion
92
extends from the second bend
90
to a contact region
94
that corresponds to the line of contact
58
at which the spring
60
will contact its respective contact
56
of the plug
50
. The spring
50
further includes a distal portion
96
that extends from the contact region
94
toward the rear end
84
of the circuit board
42
. Preferably, the proximal and distal portions
92
and
96
are aligned along a single straight line
98
.
The front spring
60
can be referred to as a rearwardly extending spring because the distal portion
96
extends from the contact region
94
toward the rear end
84
of the circuit board
42
. The proximal and distal portions
92
and
96
cooperate to form an upper resilient cantilever
89
having a base at the second bend
90
. When moving between the deflected and non-deflected orientations
78
and
80
, the cantilever
89
flexes primarily it's base (e.g., at the second bend
90
).
FIG. 7
illustrates one of the middle springs
62
in both a deflected orientation
100
and in a non-deflected orientation
102
. The terminal end
68
of the middle spring
62
extends vertically upward from the circuit board
42
. A forward extension
104
extends in a forward direction from the terminal end
68
. A first bend
106
(e.g., approximately a 90 degree bend) provides a transition between the terminal end
68
and the forward extension
104
. A second bend
108
reverses the direction of extension of the forward extension
104
. From the second bend
108
, a proximal portion
110
of the middle spring
62
extends in a rearward direction to a contact region
112
that corresponds to the line of contact
58
at which the spring
62
will contact its respective contact
56
of the plug
50
.
A distal portion
114
of the contact spring
62
extends from the contact region
112
in a rearward direction toward the rear end
84
of the circuit board
42
. Preferably, the proximal portion
110
and the distal portion
114
are aligned along a single straight line
116
and form an upper cantilever
115
having a base end at the second bend
108
. When moving between the deflected and non-deflected orientations
100
and
102
, the cantilever
115
flexes primarily at the second bend
108
. The spring
62
can be referred to as a rearwardly extending spring because the distal portion
114
extends in a rearward direction from the contact region
112
.
FIG. 8
illustrates one of the rear springs
64
in both a deflected orientation
118
and a non-deflected orientation
120
. The terminal end
70
of the rear spring
64
extends perpendicularly from the circuit board
42
. A rearward extension
122
extends in a rearward direction from the terminal end
70
. A first bend
124
(e.g., about a 90° bend) provides a transition between the terminal end
70
and the rearward extension
122
. A second bend
126
reverses the direction of extension of the rearward extension
122
. A proximal portion
130
extends from the second bend
126
in a forward direction to a contact region
132
of the spring
64
. The contact region
132
corresponds to the line of contact
58
at which the spring
64
will electrically contact one of the contacts
56
of the plug
50
. A distal portion
134
of the rear spring
64
preferably extends in a forward direction from the contact region
132
toward the front end
82
of the circuit board
42
.
The distal and proximal portions
134
and
130
are not aligned along a common straight line. Instead, the proximal and distal portions
130
and
134
are preferably aligned at an obtuse angle relative to one another. The contact region
132
is located at an apex between the proximal and distal portions
130
and
134
, and the proximal and distal portions
130
and
134
extend away from the contact region
132
in a direction generally toward the circuit board
42
. The proximal and distal portions
130
and
134
form a cantilever
135
having a base end at the second bend
126
. When moving between the deflected and non-deflected orientations
118
and
120
, the cantilever
135
flexes primarily at the second bend
126
. The spring
64
can be referred to as a forwardly facing spring because the distal portion
134
extends in a forward direction from the contact region
132
.
Referring to
FIG. 5C
, the contact springs
44
are shown in a deflected orientation. As illustrated, the distal portions
96
of the front springs
60
(i.e., the rearwardly facing contact springs) define an angle θ
1
relative to the proximal portions
130
of the rear springs
64
(i.e., the forwardly facing contact springs) that is preferably greater than 10°. In other embodiments, the angle θ
1
is greater than 15°, 20°, 25°, 30°, or 35°. In one particular embodiment of the present invention, the angle θis about 38.5°.
Referring still to
FIG. 5C
, proximal portions
92
of the front springs
60
(i.e., the rearwardly facing contact springs) define an angle θ
2
relative to the distal portions
134
of the rear springs
64
(i.e., the forwardly facing contact springs) that is preferably greater than 10°. In certain embodiments of the present invention, the angle θ
2
is greater than 15°, 20° or 25°. In one particular embodiment of the present invention, the angle θ
2
is about 26.6°.
To further reduce crosstalk, it is also noted that the distal portions
114
of the middle springs
62
are arranged in a non-parallel relationship with respect to the distal portions
96
of the front springs
60
. Additionally, the proximal portions
110
of the middle springs
62
are arranged in a non-parallel relationship with respect to the proximal portions
92
of the front springs
60
.
The above-described configurations assist in reducing crosstalk between the springs located at positions
3
-
6
because the distal portions
96
of the front springs
60
relatively quickly diverge from a parallel relationship with respect to the proximal portions
130
of the rear springs
64
, and the proximal portions
92
of the front springs
60
relatively quickly diverge from a parallel relationship with respect to the distal portions
134
of the rear springs
64
. The divergence preferably initiates as the springs
60
,
64
extend away from the line of contact
58
. Therefore, significant portions of the springs
60
and
64
are spaced relatively far apart thereby reducing the intensity of capacitive coupling.
As shown in
FIG. 5B
, the front springs
60
are shown at positions
4
and
6
and the rear springs
64
are shown at positions
3
and
5
. It will be appreciated that this positioning could be reversed such that the front springs
60
are located at positions
3
and
5
, and the rear springs
64
are located at positions
4
and
6
. Also, in other embodiments, forwardly extending springs can be used at positions
1
,
2
,
7
and
8
; and forwardly and rearwardly extending contacts can be alternated at positions
3
-
6
. In still another embodiment, forwardly extending contacts and rearwardly extending contacts can be alternated throughout positions
1
-
8
.
The insert body
36
of the jack
30
is preferably made of a dielectric material such as polycarbonate. The insert body
36
includes a top side
200
(shown in
FIG. 9A
) and a bottom side
202
(shown in FIG.
9
B). The insert body also includes a front end
204
(i.e., a spring supporting end) positioned opposite from a rear end
206
. The front end
204
is preferably configured to assist in holding the springs
44
in the configuration of
FIGS. 5A-5C
. For example, as best shown in
FIG. 9A
, the front end
104
of the insert body
36
includes four front spring bend guides
208
and two middle spring bend guides
210
. As shown in
FIG. 10
, the front spring bend guides
208
are preferably radiused (i.e. curved) to complement and support the second bends
90
of the front springs
60
. As shown in
FIG. 11
, the middle spring bend guides
210
are preferably radiused to complement and support the second bends
108
of the middle springs
62
. The middle spring bend guides
210
are preferably rearwardly and downwardly offset relative to the front spring bend guides
208
.
Referring to
FIG. 9B
, the bottom of the insert body
36
also includes structure for maintaining the springs
44
in the configurations of
FIGS. 5A-5C
. For example, the bottom side
202
includes four front spring channels
212
for receiving the forward extensions
86
of the front springs
60
.
FIG. 10
shows the forward extension
86
of one of the front springs
60
positioned in one of the front spring slot
212
. As also shown in
FIG. 10
, rear ends
213
of the front spring slots
212
are radiused to match the curvatures of the first bends
88
of the front springs
60
.
The bottom side
202
also defines two middle spring channels
214
for receiving the forward extensions
104
of the middle springs
62
.
FIG. 11
shows the forward extension
104
of one of the middle springs
62
positioned in one of the middle spring channels
214
. As also shown in
FIG. 11
, rear ends
215
of the middle spring channels
214
are radiused to match the curvatures of the first bends
106
of the middle springs
62
. The middle spring channels
214
are preferably adapted to position the forward extensions
104
of the middle springs
62
at a lower elevation than the forward extensions
86
of the front springs
60
.
The insert body
36
further defines two rear spring slots
216
for receiving the contact regions
132
of the rear springs
64
. As shown in
FIG. 12
, the rear spring slots
216
extend completely through the insert body
36
such that the contact regions
132
of the rear springs
64
can extend from the bottom side
202
of the insert body to the top side
200
of the insert body
36
.
The springs
44
are secured (i.e., fastened, retained, otherwise held in place) to the insert body
36
by the retaining clip
230
. The clip
230
also stabilizes the springs
44
(i.e., the clip
230
resists movement of at least portions of the springs
44
). The term “clip” will be understood to mean a member that is manufactured as a separate piece from the insert body
36
and, that is engageable with the insert body
36
. The clip is preferably made of a dielectric material such as polycarbonate.
To assemble the springs on the insert body
36
, the springs
44
are mounted within their respective spring retaining structures defined on the insert body
36
. For example, the second bends
90
of the front springs
60
are inserted over the bend guides
208
(see FIG.
10
). As so inserted, the forward extensions
86
of the front springs
60
fit within the front spring channels
212
beneath the insert body
36
and the cantilever portions
89
extend above the top side
200
of the insert body
36
. Similarly, the second bends
108
of the middle springs
62
are inserted over the middle spring bend guides
210
(see FIG.
11
). As so inserted, the forward extensions
104
of the middle springs
62
fit within the middle spring channels
214
and the cantilever portions
115
project above the top side
200
of the insert body
36
. The rear springs
64
are positioned such that the contact portions
132
extend through the slots
216
defined by the insert body
36
(see FIG.
12
).
FIG. 13
shows the springs
44
positioned on the insert body
36
as described above. As shown in
FIG. 13
, the termination posts
66
,
68
and
70
of the springs
44
project outwardly from the bottom side
202
of the insert body
36
. During the assembly process, the clip
230
is used to retain the springs
44
in the position of FIG.
13
. To secure the springs
44
with the clip
230
, the clip is inserted in a rearward direction into a clip receiving structure
231
defined by the insert body
236
. The clip receiving structure
231
includes shoulders
232
that interlock with tabs
234
of the clip
230
to prevent the clip
230
from being forwardly dislodged from the clip retaining structure
231
. The tabs
234
are positioned on the end of flexible arms
235
that flex inwardly as the retaining clip
230
is inserted into the clip retaining structure
231
. Specifically, during insertion of the clip
230
, the tabs
234
engage ramped surfaces
236
of the shoulders
232
causing the arms
235
to flex inwardly. Once the tabs
234
pass the shoulders
232
, the arms
235
snap outwardly to provide a snap fit connection.
With the retaining clip
230
inserted within the clip receiving structure
231
, portions of the springs
44
are captured between the clip
230
and the bottom side
202
of the insert body. The clip
230
is prevented from being downwardly displaced from the clip receiving structure
231
by side wedges
237
that fit within notches
238
of the insert body
36
when the retaining clip
230
is fully inserted within the clip retaining structure
231
.
FIG. 15
shows one of the side wedges
237
inserted within one of the notches
238
.
FIGS. 14 and 15
show the clip
230
fully inserted within the insert body
36
. As shown in
FIGS. 14 and 15
, the retaining clip
230
includes a handle
240
. The handle
240
facilitates inserting the clip
230
within the clip receiving structure
231
. After insertion, the handle can be removed from the remainder of the retaining clip
230
by conventional techniques such as cutting or otherwise breaking the handle
240
from the retaining clip
230
.
Referring to
FIGS. 16D and 16E
, the retaining clip
230
includes a plurality of post retainers for precisely maintaining the position of the termination posts
66
,
68
and
70
of the springs
44
. For example, the post retainers include four front post retainers
242
adapted to engage and position the terminal posts
66
of the front springs
60
(see FIG.
10
). Still referring to
FIGS. 16D and 16E
, the clip
230
also includes two middle post retainers
244
and two rear post retainers
246
. The middle post retainers
244
are adapted to engage and position the terminal posts
68
of the middle springs
62
(see FIG.
11
). The rear post retainers
246
are adapted to engage and position the terminal posts
70
of the rear springs
64
(see FIG.
12
). All of the post retainers
242
,
244
and
246
include structure for receiving or cradling the terminal end posts
66
,
68
and
70
. For example, as shown, the post retainers
42
,
44
and
46
each have a concave, notched configuration. However, any type of notch or other structure could also be used.
The retaining clip
230
also includes structures for trapping or pressing portions of the springs
44
against the bottom side
202
of the insert body
36
. For example, as shown in
FIGS. 16A-16C
, the clip
230
includes four front spring supports
250
for capturing the front springs
60
, two middle spring supports
260
for capturing the middle springs
62
, and two rear spring supports
270
for capturing the rear springs
64
.
The front spring supports
250
are positioned in alignment with the front post retainers
242
. As shown in
FIG. 10
, the front spring supports
250
include inclined planar portions
251
for pressing the forward extensions
86
of the forward springs
60
upwardly into their corresponding front spring channels
212
defined beneath the insert body
36
. The front spring supports
250
also include front curvatures
253
for supporting the second bends
90
of the front springs
60
, and rear curvatures
255
corresponding to the first bends
88
of the front springs
60
.
The middle spring supports
260
are positioned in alignment with the middle post retainers
244
. As shown in
FIG. 11
, the middle spring supports
260
include planar support surfaces
262
that press the forward extensions
104
of the middle springs
62
into their corresponding middle spring channels
214
defined beneath the insert body
36
. Rear ends of the middle spring support structures
260
are tapered to accommodate the second bends
106
of the middle springs
62
. The planar support surfaces
261
are preferably positioned lower than the planar support surfaces
251
of the front spring supports
250
.
The rear spring supports
270
are positioned in alignment with the rear post retainers
246
. As shown in
FIG. 12
, the rear spring supports
270
include rounded noses
272
for supporting the second bends
126
of the rear springs
64
. Planar support surfaces
271
of the rear spring supports
270
are preferably positioned higher than the planar support surfaces
251
of the front spring supports
250
. The spring supports
270
press portions of the rear springs
64
against the underside of the insert body
36
, and prevent the distal tips of the rear springs
64
from contacting the circuit board
44
.
The retaining clip
230
further includes a front flange or lip
280
that covers and protects the second bends
90
and
108
of the front and middle springs
60
and
62
when the clip
230
is fully inserted within the clip receiving structure
231
of the insert body
36
. The lip
280
projects upwardly from the spring supports
250
,
260
and
270
. Notches
282
are defined at a top edge of the lip
280
for providing clearance for the front springs
60
.
FIG. 17
shows the clip
230
fully inserted within the clip retaining structure
231
of the insert body
36
. As so inserted, the retaining clip
230
retains all of the terminal posts
66
,
68
and
70
in predetermined locations that correspond to the locations of through-holes
290
defined by the printed circuit board
44
. Similarly, insulation displacement connector contacts
293
are also positioned in alignment with through-holes
292
defined by the printed circuit board
44
. Therefore, the printed circuit board can be readily connected to the insert body
36
by pressing the two pieces together such that the terminal posts
66
,
68
and
70
fit within their corresponding through-holes
290
and the insulation displacement connectors fit within their corresponding through-holes
292
. Preferably, a supplemental fixture is also used to maintain alignment of the posts
66
,
68
and
70
. In certain embodiments, the posts
66
and
68
(shown in
FIGS. 10 and 11
) can be fabricated so as to be angled slightly forward prior to insertion in the circuit board
42
. Thus, when inserted in the through-holes
290
, the posts
66
and
68
exert a spring bias to springs
60
and
62
.
FIG. 18
shows the insert body
36
and the printed circuit board
44
after the two pieces have been connected together.
With regard to the foregoing description, it is to be understood that changes may be made in detail without departing from the scope of the present invention. It is intended that the specification and depicted aspects of the invention may be considered exemplary, only, with a true scope and spirit of the invention being indicated by the broad meaning of the following claims.
Claims
- 1. An electrical connector comprising:a spring mounting body having a top side, a bottom side, and a first end positioned opposite from a second end, the spring mounting body including a clip receiving structure positioned at the bottom side of the spring mounting body; a plurality of contact springs mounted on the spring mounting body, the contact springs including upper portions defining contact regions positioned above the top side of the spring mounting body, lower portions positioned under the spring mounting body, and bends interconnecting the upper and lower portions, the bends being positioned to curve around the first end of the spring mounting body; a clip inserted within the clip receiving structure for stabilizing the contact springs, the clip including a lip that abuts against the first end of the spring mounting body and covers an outer radius of the bends of the contact springs; and at least portions of the lower portions of the contact springs being captured between the clip and the bottom side of the spring mounting body.
- 2. An electrical connector comprising:a spring mounting body having a top side, a bottom side, and a first end positioned opposite from a second end, the spring mounting body including a clip receiving structure positioned at the bottom side of the spring mounting body; a plurality of contact springs mounted on the spring mounting body, the contact springs including upper portions defining contact regions positioned above the top side of the spring mounting body, and lower portions positioned under the spring mounting body; a clip inserted within the clip receiving structure such that at least portions of the lower portions are captured between the clip and the bottom side of the spring mounting body for stabilizing the contact springs, the clip further including post retaining structures that engage and position the posts; and a circuit board positioned under the bottom side of the spring mounting body, wherein the springs include posts that project downwardly from the spring mounting body to provide electrical connections with the circuit board.
- 3. The electrical connector of claim 2, wherein the post retaining structures are notched to receive the posts.
- 4. An electrical connector comprising:a spring mounting body including a front end and a rear end, the spring mounting body also including a top side and a bottom side, the spring mounting body defining at least one through-slot that extends through the mounting body from the bottom side to the top side, the spring mounting body further including a clip receiving structure located at the bottom side of the spring mounting body; a plurality of contact springs mounted on the spring mounting body; the plurality of contact springs including a forwardly extending contact spring having a lower portion located below the spring mounting body and an upper portion that extends through the through-slot to provide a contact region located above the top side of the spring mounting body; the plurality of contact springs including a rearwardly extending contact spring positioned next to the forwardly extending contact spring, the rearwardly extending contact spring including a lower portion connected to an upper portion by a bend, the bend being positioned to curve around the front end of the spring mounting body such that the upper portion of the rearwardly extending spring is located above the top side of the spring mounting body and the lower portion of the rearwardly extending spring is located below the spring mounting body; and a clip inserted within the clip receiving structure for stabilizing the contact springs, the lower portions of the contact springs being captured between the clip and the bottom side of the spring mounting body.
- 5. The electrical connector of claim 4, wherein the plurality of contact springs include six rearwardly extending springs and two forwardly extending springs, and wherein lower portions of all of the springs are captured between the clip and the bottom side of the spring mounting body.
- 6. The electrical connector of claim 4, further comprising a circuit board positioned under the bottom side of the spring mounting body, wherein the springs include posts that project downwardly from the spring mounting body to provide electrical connections with the circuit board.
- 7. The electrical connector of claim 6, wherein the clip includes post retaining structures that engage and position the posts.
- 8. The electrical connector of claim 7, wherein the post retaining structures are notched to receive the posts.
- 9. The electrical connector of claim 4, wherein the clip is snap-fit within the clip receiving structure.
- 10. The electrical connector of claim 4, wherein the clip includes spring support structures corresponding to each of the springs.
- 11. The electrical connector of claim 10, wherein the spring support structures are contoured to complement contours of the springs.
- 12. The electrical connector of claim 10, wherein the spring support structures include support surfaces that press the springs against the bottom side of the spring mounting body.
- 13. The electrical connector of claim 12, wherein selected ones of the support surfaces have different elevations.
- 14. The electrical connector of claim 10, wherein the forwardly extending spring includes a bend, and wherein a corresponding one of the spring support structures has a rounded portion that corresponds to the bend of the forwardly extending spring.
- 15. The electrical connector of claim 4, wherein the clip includes a front lip that abuts against the front end of the spring mounting body and covers the bend of the rearwardly extending spring.
- 16. A method for mounting telecommunication contact springs, the method comprising:providing a dielectric spring mounting body; positioning the contact springs at desired locations on the spring mounting body, the contact springs including termination posts; stabilizing the contact springs by capturing first portions of the contact springs between the spring mounting body and a dielectric clip; stabilizing the termination posts by engaging the termination posts with post retainers of the clip; and connecting the clip to the spring mounting body with the captured first portions of the contact springs remaining captured and the termination posts remaining stabilized after the clip has been connected to the spring mounting body.
- 17. The method of claim 16, wherein the spring mounting body includes a top side and a bottom side, and wherein the clip is connected to the spring mounting body by inserting the clip into a clip receiving structure located at the bottom side of the spring mounting body.
- 18. The method of claim 16, further comprising connecting the springs to a printed circuit board having though-holes for receiving the posts, the through-holes being aligned with the predetermined positions of the posts.
- 19. A method for connecting contact springs to a circuit board, the method comprising:providing a dielectric spring mounting body; positioning the contact springs at desired locations on the spring mounting body, the contact springs including posts that project outwardly from the spring mounting body; stabilizing the posts at predetermined locations corresponding to through-holes defined by the circuit board by engaging the posts with post retaining portions of a clip that is connected to the spring mounting body after the springs have been positioned at the desired locations; and after the clip has been connected to the spring mounting body, inserting the posts into the through-holes defined by the circuit board.
- 20. A method for mounting telecommunication contact springs, the method comprising:providing a spring mounting body having a top side, a bottom side, and a front end opposite a rear end; positioning the contact springs in a forwardly extending orientation such that a bend of the contact springs curves around the front end of the spring mounting body; inserting a clip from the front end of the spring mounting body toward the rear end of the spring mounting body; and stabilizing the contact springs by capturing portions of the contact springs between the spring mounting body and the clip.
- 21. The method of claim 20, wherein the step of inserting a clip includes inserting the clip along a direction from the bends of the contact springs towards posts of the contact springs.
US Referenced Citations (51)
Foreign Referenced Citations (1)
| Number |
Date |
Country |
| 2 273 397 |
Jan 1997 |
GB |