CN107681290B - Cable assembly with improved cable retention - Google Patents

Abstract

There is provided a cable connector assembly including: the connector shell (10) is made of insulating materials and comprises an accommodating space defined by a top plate (110), a bottom plate (120) and two side plates (130), the accommodating space is divided into a plurality of cavities (122) by a plurality of partition plates (121), and the tops of the cavities are provided with insertion spaces communicated with one another; a cable assembly (20) having a plurality of conductive wires (210), each of the conductive wires having a front end electrically connected to a terminal (220), each of the terminals being inserted into a corresponding one of the plurality of cavities in the connector housing; the fixing device (30) is inserted into the inserting space of the connector shell, abuts against each terminal to form a corresponding opening through which the lead can pass, and seals an inlet behind the accommodating space of the connector shell; and an insulating housing (40) injection molded behind the fixing device and partially covering the connector housing.

Description

cable connector assembly

technical field

The present invention relates to a cable connector assembly, and more particularly to a cable connector assembly with an improved securing device.

Background technique

Cable connectors are widely used to connect different components of an electronic device, or to connect various devices together between different electronic devices, for data and power transmission between electronic devices. Chinese invention patent application CN 104218393 A discloses a plug electrical connector, as shown in FIG. 8 , which includes an insulating body 810, a plurality of first terminals 820, a plurality of second terminals 830, a grounding plate 840, a A fixing seat 850, a cable 880, etc., wherein the fixing seat 850 is installed on the top surface of the insulating body 810, and the fixing seat 850 forms a plurality of positioning grooves to respectively accommodate the second terminals 830, so that the terminals are fixed The seat can fix the second terminal inside the insulating body. However, the electrical plug connector has defects, the fixing base 850 can only fix the terminal, but the wire electrically connected to the terminal cannot be fixed. In use, the movement of the wire will affect the stability of the connection between the terminal and the wire.

FIG. 9 shows another prior art cable connector assembly with the insulating housing and grounded metal cover removed for clarity of understanding. 910 in the figure represents a connector housing, and a plurality of wires 920 are inserted into a plurality of cavities in the connector housing 910 respectively. The TPA) 930 is inserted into the connector housing 910 to support the terminals, preventing the terminals from coming out of the connector housing 910 to ensure electrical connection. However, since there is a gap between the wire 920 and the connector housing 910 (as shown by the arrow in FIG. 9 ), the molten rubber will overflow into the gap when the outer insulating shell is injection-molded, affecting the electrical connection between the terminal and the wire. Bad glue.

In view of the above shortcomings of the prior art, the industry expects a more reliable cable connector assembly.

SUMMARY OF THE INVENTION

An object of the present invention is to solve the problems in the prior art by providing a cable connector assembly, in which the terminal and the wire are respectively fixed in position by the fixing device, and the connector housing is The gap with the cable assembly is completely closed, preventing the glue from entering the terminal area during injection molding, thereby making the connection between the terminal and the wire more reliable.

The present invention provides a cable connector assembly, comprising: a connector housing, which is made of insulating material, and includes an accommodating space defined by a top plate, a bottom plate and two side plates, and the accommodating space is divided by a plurality of partition plates It is a plurality of cavities, and the tops of the plurality of cavities have inter-connected insertion spaces; the cable assembly has a plurality of wires, and the front ends of the wires are respectively electrically connected with terminals, and each terminal is correspondingly inserted into the connector housing. into the plurality of cavities; a fixing device is inserted into the insertion space of the connector housing, wherein the fixing device abuts against each terminal to form an opening just for the wire to pass through, and closes the an inlet behind the accommodating space of the connector housing; and an insulating shell, which is injection-molded behind the fixing device and partially covers the connector housing.

According to the cable connector assembly of the present invention, the fixing device includes: a terminal fixing member inserted into the insertion space and abutting against each terminal, the terminal fixing member having a plurality of first wire-holding halves; and The wire clamp has a plurality of second wire halves matched with the plurality of first wire halves, the first wire halves and the second wire halves cooperate with each other to form a supply the opening through which the wire passes.

According to the cable connector assembly of the present invention, the terminal fixing member includes a horizontal extending plate and a vertical extending plate perpendicular to the horizontal extending plate, and the front portion of the horizontal extending plate has a front portion capable of being hooked on the connector housing. The inner hook of the vertical extension plate has the plurality of first hook halves.

According to the cable connector assembly of the present invention, the plurality of first wire clamping halves and the second wire clamping halves are arc-shaped.

According to the cable connector assembly of the present invention, a first positioning protrusion protruding downward is provided between the adjacent first wire clamping halves, and a first positioning protrusion protruding downward is provided between the adjacent second wire clamping halves. The second positioning protrusion protruding upward, the first positioning protrusion and the second positioning protrusion are abutted together in front and back.

According to the cable connector assembly of the present invention, the two sides of the vertical extension plate of the terminal fixing member are respectively provided with a first buckle portion, the wire clamping member is provided with a second buckle portion, and the first buckle The engaging portion cooperates with the second buckling portion, so that the terminal fastener and the wire fastener are assembled together.

According to the cable connector assembly of the present invention, the first buckling portion is a groove, the second buckling portion is two elastic locking arms extending in parallel with each other, and the two elastic locking arms are correspondingly buckled into the groove.

According to the cable connector assembly of the present invention, the terminal fixing member includes a guide portion to guide the cooperation of the first snap-fit portion and the second snap-fit portion.

According to the cable connector assembly of the present invention, the connector housing is further provided with guide rails on both sides of the insertion space to guide the terminal fixing member to be inserted into the connector housing.

According to the cable connector assembly of the present invention, the hook has an inclined surface gradually inclined outward in the width direction from front to rear, so that the fixing device can be easily inserted into the guide rail of the connector housing.

According to the cable connector assembly of the present invention, the improved fixing device is used to fix the cable assembly, so that the terminal is fixed in the connector housing to prevent the terminal from coming out; at the same time, the wire can be fixed to ensure its connection with the terminal. In addition, since the entrance behind the accommodating space of the connector housing is sealed, it is also possible to prevent the rubber compound from rushing into the terminal area when the insulating housing is injection-molded.

Description of drawings

The present application will be described in detail below with reference to the accompanying drawings, in which:

1 is a perspective view of a cable connector assembly in accordance with the present application.

2 is an isometric exploded view of a cable connector assembly in accordance with the present application.

Figures 3a and 3b are perspective exploded views of a cable connector assembly according to the present application with the insulating housing and grounded metal cover removed.

4 is another perspective exploded view of a cable connector assembly in accordance with the present application with the insulating housing and grounded metal shield removed.

5 is a side view of a cable connector assembly in accordance with the present application with the insulating housing and grounded metal shield removed.

6 is a cross-sectional view of a cable connector assembly in accordance with the present application, taken along line 5-5 in FIG. 5, with the insulating housing and grounded metal shield removed.

Figures 7a and 7b are perspective views of a cable connector assembly in accordance with the present application with the insulating housing and grounded metal cover removed.

Figure 8 shows a prior art plug electrical connector.

Figure 9 shows another prior art cable connector assembly with the insulating housing and grounded metal shield removed.

Description of reference numerals

Description of the prior art reference numerals:

810 insulating body 820 first terminal

830 second terminal 840 grounding lug

850 Fixture 880 Cable

910 connector housing 920 wire

930 terminal positioning device

Description of the reference numerals in this application:

1Cable Connector Assembly 10Connector Housing

110 top plate 120 bottom plate

121 partition 122 cavity

130 side plate 131 guide rail

140 Housing 20 Cable Assembly

210 lead wire 211 front end

220 terminal 221 tail

222 Contact part 222a Flat plate part

222b Elastic finger 223 Connection

30 Fixtures 310 Terminal Fixtures

311 Horizontal extension board 312 Vertical extension board

313 hook 314 first card line half

315 Protruding part 316 The first buckle part

318 The first positioning protrusion 320 Wire clamp

321 Base 322 Stopper

324 The second card line half 326 The second buckle part

328 second positioning protrusion 40 insulating shell

50 Ground Metal Cover

Detailed ways

The following detailed description describes various exemplary embodiments and is not intended to be limited to the explicitly disclosed combinations. Thus, unless stated otherwise, various features disclosed herein may be combined together to form various additional combinations (not shown for the sake of brevity).

1 is a perspective view of a cable connector assembly according to the present application; FIG. 2 is an exploded perspective view of a cable connector assembly according to the present application; FIGS. 3a and 3b are partial perspective views of the cable connector assembly according to the present application Exploded view with the insulating housing and grounded metal cover removed; FIG. 4 is another perspective exploded view of the cable connector assembly according to the present application with the insulating housing and grounded metal cover removed.

As shown in FIGS. 1 and 2 , the cable connector assembly 1 is a connector for transmitting a large current, which includes a connector housing 10 , a cable assembly 20 , a fixing device 30 and an insulating housing 40 . In FIG. 2 , the connector housing 10 , the cable assembly 20 , and the fixture 30 are shown assembled together, with the fixture 30 secured to the cable assembly 20 . The insulating housing 40 may be composed of the same insulating material as the connector housing 10 . The insulating shell 40 is injection-molded behind the fixing device 30 and partially covers the connector housing 10 . The cable connector assembly 1 according to the present application may further include a ground metal cover 50 , which may be located between the connector housing 10 and the insulating housing 40 , and may be sleeved on the outer periphery of the connector housing 10 . The grounding metal cover 50 is in the shape of a square, and a plurality of grounding elastic pieces may be provided at the front end thereof.

As shown in FIGS. 3 a and 3 b , the connector housing 10 includes a top plate 110 , a bottom plate 120 and two side plates 130 . The top plate 110, the bottom plate 120 and the two side plates 130 together define an accommodating space, and the cable assembly 20 and the fixing device 30 can be inserted from the entrance at the rear of the accommodating space. The accommodating space may be divided into a plurality of cavities 122 by the partition plate 121 extending upward from the bottom plate 120 , and each cavity 122 may have a communicating insertion space at the top. The inner sides of the two side plates 130 may be provided with guide rails 131 to guide the fixing device 30 to be inserted into the connector housing 10 . The front part of the connector housing 10 along the insertion direction of the fixing device 30 (the direction shown by the arrow in FIG. 3 a ) can extend forwardly with a plurality of isolated receiving parts 140 to respectively receive the terminals of the cable assembly 20 .

The cable assembly 20 has a plurality of wires 210 , and the outer insulation at the front ends 211 of the wires 210 is removed and connected to the terminals 220 . The wires 210 and the terminals 220 can be connected together in any known manner and establish an electrical and mechanical connection therebetween. As shown in FIGS. 3 a and 3 b , the terminal 220 may include a tail portion 221 connected to the wire 210 and a contact portion 222 inserted into the cavity 122 in the connector housing 10 . The tail portion 221 may be generally "U" shaped so that the front end 211 of the wire 210 is crimped and fixed therein. The connecting portion 223 between the tail portion 221 and the contact portion 222 may also be generally “U” shaped and may have a lower profile than the tail portion 221 and the contact portion 222, and the contour of the connecting portion 223 can be inserted into the connector along the cable assembly 20 The direction of the housing 10 (in the direction indicated by the arrow in Fig. 3a) is gradually raised. The connecting portion 223 may be connected to the flat plate portion 222a of the contact portion 222, and the flat plate portions 222a facing each other may extend upward in the height direction. The flat plate portion 222a may have a higher profile than the tail portion 221, and a plurality of elastic finger portions 222b may extend forward from the flat plate portion 222a, three elastic finger portions 222b spaced apart from each other are shown in the figure, but the number is not limited this. Like the flat plate portion 222a, the elastic finger portions 222b are also opposed to each other, and can be pressed against two sides in the cavity 122 respectively. Alternatively, a portion of the flat plate portion 222a may be connected at the bottom.

The fixing device 30 may include a terminal fixing member 310 and a wire clamping member 320 . The terminal fixture 310 may have a horizontally extending plate 311 and a vertical extending plate 312 extending vertically downward from a rear end of the horizontally extending plate 311 . The horizontally extending plate 311 can be inserted into the insertion space in the connector housing 10 along the guide rail 131 , so that the upper surface of the horizontally extending plate 311 can be in contact with the lower surface of the top plate 110 . The two sides of the front portion of the horizontally extending plate 311 are respectively provided with hooks 313 , and a gap may be left between the hooks 313 and the body of the horizontally extending plate 311 to provide a deformation space. The hook 313 may take any known form as long as it can be elastically hooked inside the connector housing 10 . In order to facilitate insertion of the hook 313 into the connector housing 10 , the hook 313 may have an inclined surface gradually inclined outward in the width direction from front to rear. When the horizontally extending plate 311 is inserted into a predetermined position in the connector housing 10 , the hooks 313 hold the terminal fixing member 310 at the predetermined position and prevent it from being detached from the connector housing 10 . A portion of the horizontally extending plate 311 adjacent to the vertically extending plate 312 may be provided with protruding portions 315 on both sides, respectively, and front surfaces of the protruding portions 315 may respectively contact the rear surfaces of the side plates 130 . In this embodiment, the protrusions 315 may serve as guides. A portion of the vertically extending plate 312 adjacent to the protruding portion 315 may be respectively provided with first locking portions 316 , and the first locking portions 316 may be grooves concave inward along the width direction of the horizontally extending plate. A plurality of first clamping wire halves 314 can be disposed on the lower edge of the vertically extending plate 312 . The first clamping wire half 314 can be in an arc shape. As shown in FIG. 3a and FIG. 3b, the first clamping wire half 314 is in a semicircle, and the number of the first clamping wire half 314 can correspond to the number of the wires 210. The figure shows three The first clamping wire half 314 is provided with a downwardly protruding first positioning protrusion 318 at a rear position between two adjacent first clamping wire halves 314 .

The wire clamp 320 may include a base 321, and two sides of the base 321 may be respectively provided with second buckling portions 326, and the second buckling portions 326 are preferably two elastic buckling arms extending relatively parallel. The end of the second buckling portion 326 may protrude inwardly along the width direction, so as to match with the first buckling portion 316 and be fastened together. Optionally, the second buckling portion may be provided on the terminal fixing member 310, and the first buckling portion may be provided on the wire clamping member 320 (not shown). The base 321 may also be provided with a stopper 322 on which the vertically extending plate 312 may rest. The base 321 of the wire clamp 320 is also correspondingly provided with a plurality of second wire halves 324, the shape of which can correspond to the shape of the first wire half 314, for example, a semicircle as shown in FIG. 3a and FIG. 3b A second positioning protrusion 328 protruding upward is provided at the front position between the two adjacent second clamping wire halves 324 . The first wire clamping half 314 cooperates with the second wire clamping half 324 to form an opening (round hole) just for the wire 210 to pass through, so as to fix the wire 210 therein. The first positioning protrusions 318 and the second positioning protrusions 328 are abutted back and forth, so as to provide positioning in the front-rear direction.

The terminal fixing member 310 and the wire clamping member 320 can be respectively injection-molded and then assembled together, and of course they can also be formed into an integral fixing device 30 . The fixing device 30 can be inserted into the connector housing 10 to close the entrance at the rear of the accommodating space, and make its front end abut each terminal 220 , and the wire 210 can pass through the opening provided in the fixing device 30 .

The wire clamp 320 can cooperate with the terminal fixing member 310 to form the fixing device 30 . When assembling the separately formed wire clamp 320 and the terminal fixing member 310 , the second engaging portion 326 of the wire clamp 320 can run along the protruding portion 315 to ensure the first wire clamping half 314 and the second wire clamping half 324 is aligned; the wire clamp 320 can continue to travel until the second buckling portion 326 enters the corresponding first buckling portion 316 to be buckled together, and the assembly of the fixing device 30 is completed. As shown in FIG. 4 , the terminal fixing member 310 and the wire clamping member 320 can be respectively installed on the upper and lower sides of the cable assembly 20 , so as to fix the cable assembly 20 in the fixing device 30 .

Fig. 5 is a side view of a cable connector assembly according to the present application, Fig. 6 is a cross-sectional view of the cable connector assembly according to the present application taken along line 5-5 in Fig. 5, Figs. Another perspective view of the application's cable connector assembly with the insulating housing and grounded metal shield removed in both of these views.

5 and 6 show the connector housing 10 , the cable assembly 20 and the fixing device 30 in the assembled state, wherein the fixing device 30 has been inserted into the connector housing 10 from the rear insertion space, and the hook 313 is hooked On a boss formed inside the connector housing 10 , the fixing device 30 is held in a predetermined position, thereby preventing it from coming out of the connector housing 10 . The front edge of the horizontally extending plate 311 of the terminal fixing member 310 can abut against the rear edge of the flat plate portion 222a of the terminal 220 to ensure the predetermined position of the terminal 220 in the connector housing 10 and prevent the terminal 220 from being removed from the connector housing 10 back out. The elastic fingers 222b of the terminals 220 can be respectively accommodated in the accommodating portions 140 of the connector housing 10 . The wire 210 can pass through the opening formed by the first wire clamping half 314 and the second wire clamping half 324, and is limited by the size of the opening. The size of the opening should be equal to or slightly smaller than the diameter of the wire 210 , and the size of the opening can be adjusted according to the diameters of different wires, so as to be tightly clamped on the outer periphery of the wire 210 .

Figures 7a and 7b show perspective views of the connector housing 10, the cable assembly 20 and the fixture 30 in an assembled state. The gap between the connector housing 10 and the cable assembly 20 is completely sealed by the fixing device 30, and only the wire 210 can pass through the opening of the fixing device 30, thereby preventing the molten glue from rushing into the insulating shell 40 during injection molding In the gap, the terminal 220 is adversely affected. In addition, a portion of the horizontally extending plate 311 may protrude out of the connector housing 10, and the side plate 130 and the protrusion 315 may be flush on the side and bottom surfaces, so that the cable connector assembly 1 has flat side and bottom surfaces.

According to the cable connector assembly of the present invention, the cable assembly is fixed by the fixing device, so that the terminal is fixed in the connector housing, thereby preventing the terminal from coming out backward; at the same time, the wire can also be fixed to ensure that it is in contact with the terminal. Secure connection. In addition, since the entrance at the rear of the accommodating space of the connector housing is sealed, the rubber compound is prevented from rushing into the terminal area when the insulating shell is injection-molded, thereby obtaining a more reliable cable connector assembly.

The present application is not limited to the above-described embodiments. Various modifications may be made based on the spirit of the present application without departing from the scope of the present application.

Claims (11)

1. A cable connector assembly, comprising: The connector housing is made of insulating material and includes an accommodating space defined by a top plate, a bottom plate and two side plates, the accommodating space is divided into a plurality of cavities by a plurality of partition plates, and the top of the plurality of cavities has Interconnected insertion spaces; The cable assembly has a plurality of wires, the front ends of the wires are respectively electrically connected with terminals, and the terminals are correspondingly inserted into the plurality of cavities in the connector housing; The fixing device is inserted into the insertion space of the connector housing, wherein the fixing device abuts against each terminal, forms an opening just for the wire to pass through, and closes the connector housing. the entrance at the rear of the accommodation space; an insulating housing that is injection-molded behind the fixture and partially covers the connector housing; and a grounding metal cover, which is located between the connector housing and the insulating shell; the grounding metal cover is sleeved on the outer periphery of the connector housing, and the front end thereof is provided with a plurality of grounding elastic sheets; Wherein, each terminal includes a tail for connecting to a wire and a contact for inserting into a cavity in the connector housing. 2. The cable connector assembly of claim 1, wherein the securing means comprises: a terminal fixture inserted into the insertion space and abutted against each terminal, the terminal fixture having a plurality of first wire clamping halves; and The wire clamp has a plurality of second wire halves matched with the plurality of first wire halves, the first wire halves and the second wire halves cooperate with each other to form a supply the opening through which the wire passes; Each of the terminals further includes a connecting portion between the tail portion and the contact portion, the connecting portion is connected with two flat plate portions of the contact portion, and the two flat plate portions facing each other may be upward in the height direction Extending, a plurality of elastic finger portions extend forward from the two flat plate portions. 3. The cable connector assembly according to claim 2, wherein the terminal fixing member comprises a horizontal extending plate and a vertical extending plate perpendicular to the horizontal extending plate, the front portion of the horizontal extending plate having a For the hooks inside the connector housing, the vertical extension plate has the plurality of first wire halves. 4. The cable connector assembly of claim 2 or 3, wherein the plurality of first and second wire clip halves are each arcuate. 5. The cable connector assembly according to claim 2 or 3, wherein a first positioning protrusion protruding downward is provided between the adjacent first half parts of the wire, and the adjacent second A second positioning protrusion protruding upward is provided between the half parts of the clamping wire, and the first positioning protrusion and the second positioning protrusion are abutted back and forth. 6. The cable connector assembly according to claim 2 or 3, wherein the two sides of the vertical extension plate of the terminal fixing member are respectively provided with a first buckle portion, and the wire clamping member is provided with a second buckle portion. The first buckling portion is matched with the second buckling portion, so that the terminal fixing member and the wire clip are assembled together. 7 . The cable connector assembly of claim 6 , wherein the first snap-fit portion is a groove, the second snap-fit portion is two elastic snap arms extending oppositely in parallel, the two elastic snap portions The buckle arms are correspondingly buckled into the grooves. 8. The cable connector assembly of claim 6, wherein the terminal fixture includes a guide portion to guide the mating of the first snap portion and the second snap portion. 9 . The cable connector assembly of claim 2 , wherein the connector housing is further provided with guide rails on both sides of the insertion space to guide the terminal fixing member to be inserted into the connector housing. 10 . middle. 10. The cable connector assembly according to claim 3, wherein the connector housing is further provided with guide rails on both sides of the insertion space to guide the terminal fixing member to be inserted into the connector housing middle. 11. The cable connector assembly of claim 10, wherein the hook has an inclined surface gradually inclined outward in the width direction from front to rear, so that the fixing device can be easily inserted into the guide rail of the connector housing .

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