A cable connector, a manufacturing method thereof, and a connector assembly

Abstract

The application discloses a cable connector, a manufacturing method thereof and a connector assembly. The cable connector comprises a plastic main body, a contact body and a cable. The plastic main body is internally provided with a cavity, and the contact body is fixed on the plastic main body and extends into the cavity. The cable is fixed on the plastic main body, and one end of the cable penetrates into the plastic main body and is electrically connected with the contact body in the cavity, and the electrically connected part is exposed in the cavity. The application injects a plastic strip into the assembly gap between parts, ensures the connection strength between the cable and the plastic main body, eliminates the problems of part position movement and shaking caused by the product assembly gap, improves the reliability of the product, avoids the injection of an inner mold at the position of the cable and the contact body welding point, reduces the attenuation of the cable, and greatly improves the signal integrity of the product.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and in particular to a cable connector, its manufacturing method, and connector components. Background Technology

[0002] In existing connectors, the various components and the plastic body are fixed together using a snap-fit ​​structure. Because there are assembly gaps and tolerances between the snap-fit ​​components, the components may wobble or move when the product is under stress, affecting product reliability. Additionally, the cable solder joints of existing connectors are covered with adhesive strips. This adhesive strip reduces the impedance at the solder joints, leading to increased cable attenuation and affecting signal integrity. Summary of the Invention

[0003] In view of the technical problems mentioned in the background art, the purpose of this invention is to provide a cable connector, a method for manufacturing the same, and a connector assembly. By injecting a plastic strip into the assembly gap between components, problems such as component movement and shaking caused by product assembly gaps can be eliminated, thereby improving product reliability.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A cable connector includes a plastic body, a contact, and a cable. The plastic body has an internal cavity, and the contact is fixed to the plastic body and extends into the cavity. The cable is fixed to the plastic body, with one end of the cable passing through the plastic body and electrically connected to the contact within the cavity, the electrical connection portion being exposed within the cavity.

[0006] Furthermore, the plastic body includes a plastic body and a cover disposed on the plastic body. The cover is fixedly installed in the cavity, and the cable is fixed to the plastic body through the cover.

[0007] The cover has an injection groove on its wall surface that mates with the plastic body. A rubber strip for filling the assembly gap between the cover and the inner wall of the cavity is injection molded in the injection groove. The plastic body has an injection hole that communicates with the injection groove.

[0008] Preferably, in order to make the assembly between the cover and the connector plastic body more stable, the injection groove is provided around the peripheral sidewall of the cover.

[0009] Furthermore, it also includes an insulator, which is fixed in the cavity and located at the front end of the cover. An anti-cavity groove is formed on the side of the insulator near the cover. The contact is fixed on the insulator, and the electrical connection part between the contact and the cable is exposed in the anti-cavity groove.

[0010] The cable includes a first cable and a second cable symmetrically arranged on the upper and lower sides of the cover. The clearance groove includes a first clearance groove and a second clearance groove symmetrically arranged on the upper and lower sides of the insulator. The electrical connection part of the first cable and the contact body is exposed in the first clearance groove, and the electrical connection part of the second cable and the contact body is exposed in the second clearance groove.

[0011] Furthermore, the contact body is a conductive terminal group, which includes a first terminal block and a second terminal block arranged at intervals, one end of the first terminal block extending into the first clearance groove, and one end of the second terminal block extending into the second clearance groove.

[0012] The insulator includes a first plastic component and a second plastic component that are interlocked and fixed within the cavity of the plastic body.

[0013] Furthermore, the cover body includes an upper cover and a lower cover that interlock with each other.

[0014] Preferably, in order to prevent the upper and lower covers from moving or shaking after they are fitted together, an injection cavity is opened on each of the left and right sides of the cover body at the connection between the upper and lower covers. The injection cavity is connected to the injection groove, and the injection cavity is filled with an injection strip that is integrally injection molded with the rubber strip.

[0015] Preferably, in order to further improve the connection strength between the cover and the plastic body, the side of the plastic body is provided with sealing holes above and below the injection hole, which are connected to the injection cavity, and a connecting post integrally formed with the adhesive strip is injected into the sealing hole.

[0016] Preferably, in order to better achieve the connection with the plastic body, the upper cover and the lower cover are respectively snapped and fixed in the cavity of the plastic body, and the snapping gap is filled with an injection block integrally injection molded with the rubber strip.

[0017] This invention also discloses a method for manufacturing a cable connector, comprising the following steps:

[0018] S1. The contact body is integrally formed on the insulator, and one end of the contact body extends into the recessed groove of the insulator.

[0019] S2. Connect one end of the cable to the contact body, with the connection point exposed inside the clearance groove;

[0020] S3. The cover is injection molded on the cable, but the cavity groove is not injection molded;

[0021] S4. Assemble the component obtained in step S3 into the cavity of the plastic body, and inject plastic strip material into the injection groove of the cover until the plastic strip material fills the assembly gap between the injection groove and the inner wall of the cavity. After the plastic strip material is cured, the cable connector is obtained.

[0022] The present invention also discloses a connector assembly, including a cable connector and a board-end connector, wherein the cable connector is the cable connector described above or a cable connector manufactured using the above manufacturing method.

[0023] The present invention has the following beneficial effects: it provides a cable connector, a method for manufacturing the same, and a connector assembly. By injecting a plastic strip into the assembly gap between the components, the connection strength between the cable and the plastic body is ensured, which can eliminate problems such as component movement and shaking caused by product assembly gaps and improve product reliability. At the same time, the cable and contact solder joint position is not filled with an inner mold, which reduces cable attenuation and greatly improves the signal integrity of the product. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the cable connector of the present invention.

[0025] Figure 2 for Figure 1 Exploded view of the parts.

[0026] Figure 3 for Figure 1 A structural diagram showing the plastic body, pull straps, and fasteners removed.

[0027] Figure 4 for Figure 3 A schematic diagram of the structure after removing the adhesive strips and cables.

[0028] Figure 5 for Figure 3 Front view diagram.

[0029] Figure 6 This is a schematic diagram of the three-dimensional structure of the plastic body.

[0030] Figure 7 for Figure 3 A schematic diagram of the three-dimensional structure of the upper part.

[0031] Figure 8 for Figure 3 A schematic diagram of the three-dimensional structure of the lower half.

[0032] Figure 9 This is a schematic diagram of the connection of the connector assembly of the present invention.

[0033] Figure 10 This is a graph showing the impedance measurement data for the connector assembly.

[0034] Figure 11 A graph showing the insertion loss measurement data for the connector assembly.

[0035] Figure 12 This is a graph showing performance measurement data for near-end crosstalk between high-speed pairs of connector assemblies.

[0036] Figure 13 This is a graph showing the performance measurement data of far-end crosstalk between high-speed pairs of connector assemblies.

[0037] Explanation of main component symbols: 1. Plastic body; 10. Cavity; 101. Injection hole; 102. Sealing hole; 11. Plastic body; 12. Cover; 120. Injection groove; 1201. Injection cavity; 121. Upper cover; 122. Lower cover; 2. Contact body; 21. First terminal block; 22. Second terminal block; 3. Cable; 31. First cable; 32. Second cable; 4. Adhesive strip; 401. Injection strip; 402. Connecting post; 403. Injection block; 5. Insulator; 501. First clearance groove; 502. Second clearance groove; 51. First plastic part; 52. Second plastic part; 6. Locking fastener; 7. Pull strap; 8. Board end connector. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0039] Example 1

[0040] like Figure 1-8 As shown, this embodiment discloses a cable connector, including a plastic body 1, a contact 2, a cable 3, an adhesive strip 4, and an insulator 5. A cavity 10 is formed inside the plastic body 1. The contact 2 is fixed to the plastic body 1 and extends into the cavity 10. The cable 3 is fixed to the plastic body 1, and one end of the cable 3 passes through the plastic body 1 and is electrically connected to the contact 2 within the cavity 10, with the electrical connection portion exposed within the cavity 10.

[0041] The plastic body 1 includes a plastic body 11 and a cover 12 disposed on the plastic body 11. The cover 12 is fixedly installed in the cavity 10, and the cable 3 is fixed to the plastic body 1 through the cover 12. The cover 12 has an injection groove 120 on the wall surface that mates with the plastic body 1. A rubber strip 4 for filling the assembly gap between the cover 12 and the inner wall of the cavity 10 is injection molded in the injection groove 120. The plastic body 1 has an injection hole 101 that communicates with the injection groove 120.

[0042] Preferably, in order to make the assembly between the cover 12 and the connector plastic body 1 more stable, the injection molding groove 120 is provided around the peripheral sidewall of the cover 12.

[0043] An insulator 5 is fixed inside the cavity 10 and located at the front end of the cover 12. A clearance groove is formed on the side of the insulator 5 near the cover 12. A contact 2 is fixed to the insulator 5, and the electrical connection between the contact 2 and the cable 3 is exposed within the clearance groove. The cable 3 includes a first cable 31 and a second cable 32 symmetrically arranged on the upper and lower sides of the cover 12. The clearance groove includes a first clearance groove 501 and a second clearance groove 502 symmetrically arranged on the upper and lower sides of the insulator 5. The electrical connection between the first cable 31 and the contact 2 is exposed within the first clearance groove 501, and the electrical connection between the second cable 32 and the contact 2 is exposed within the second clearance groove 502.

[0044] In this embodiment, the contact 2 is a conductive terminal group, which includes a first terminal block 21 and a second terminal block 22 spaced apart. One end of the first terminal block 21 extends into the first clearance groove 501, and one end of the second terminal block 22 extends into the second clearance groove 502. The contact 2 can also be a PCB board, etc.

[0045] The insulator 5 includes a first plastic part 51 and a second plastic part 52 that are interlocked with each other. The first plastic part 51 and the second plastic part 52 are respectively interlocked and fixed in the cavity 10 of the plastic body 1.

[0046] The cover 12 includes an upper cover 121 and a lower cover 122 that are interlocked. Preferably, in order to prevent the upper cover 121 and the lower cover 122 from moving or shaking after being fitted together, an injection cavity 1201 is respectively opened on the left and right sides of the cover 12 at the connection between the upper cover 121 and the lower cover 122. The injection cavity 1201 communicates with the injection groove 120, and the injection cavity 1201 is filled with an injection strip 401 that is integrally injection molded with the rubber strip 4.

[0047] Preferably, in order to further improve the connection strength between the cover 12 and the plastic body 1, the side of the plastic body 1 is provided with sealing holes 102 above and below the injection hole 101, which are connected to the injection cavity 1201. A connecting post 402 integrally formed with the glue strip 4 is injected into the sealing hole 102.

[0048] Preferably, in order to better achieve the connection with the plastic body 1, the upper cover 121 and the lower cover 122 are respectively snapped and fixed in the cavity 10 of the plastic body 1, and the snapping gap is filled with an injection block 403 integrally injection molded with the rubber strip 4.

[0049] The manufacturing method of the above-mentioned cable connector includes the following steps: 1) Integral injection molding of the first plastic part 51 and the second plastic part 52 onto the first terminal block 21 and the second terminal block 22 respectively, such that one end of the first terminal block 21 and the second terminal block 22 extends into the first clearance groove 501 and the second clearance groove 502 respectively; 2) Soldering one end of the first cable 31 and the second cable 32 to the first terminal block 21 and the second terminal block 22 respectively, and the soldering parts are exposed in the first clearance groove 501 and the second clearance groove 502 respectively; 3) Integrating the first cable 31, the second cable 32 into the first terminal block 21 and the second terminal block 22 respectively. The upper cover 121 and lower cover 122 are injection molded on the second cable 32, and the first clearance groove 501 and the second clearance groove 502 are not injection molded; 4) The two sets of components assembled above are assembled into the cavity 1 of the plastic body 1, and the injection strip material is filled into the injection groove 120 through the injection hole 101 until the strip material fills the assembly gap between the injection groove 120, the injection cavity 1201, the cover 12 and the inner wall of the cavity 10, the sealing hole 102 and the injection hole 101; 5) After the strip material is cured, the locking part 6 and the pull strap 7 are assembled to complete the production of the cable connector.

[0050] Example 2

[0051] like Figure 9 As shown, this embodiment discloses a connector assembly, including the cable connector and board-end connector 8 as in Embodiment 1.

[0052] like Figure 10-13 The figure shown is a performance test data graph of the connector assembly. The test results show that the connector assembly of the present invention has good performance in terms of impedance, insertion loss, near-end crosstalk and far-end crosstalk.

[0053] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail to the invention without departing from the spirit and scope of the invention as defined in the appended claims are within the scope of protection of the invention.

Claims

1. A cable connector, characterized in that: The device includes a plastic body (1), a contact (2), and a cable (3). The plastic body (1) has an internal cavity (10). The contact (2) is fixed to the plastic body (1) and extends into the cavity (10). The cable (3) is fixed to the plastic body (1), with one end of the cable (3) penetrating the plastic body (1) and electrically connected to the contact (2) within the cavity (10), and the electrical connection portion exposed within the cavity (10). The plastic body (1) includes a plastic substrate (1...). 1) and a cover (12) provided on the plastic body (11); the cover (12) has an injection groove (120) on the wall surface that cooperates with the plastic body (11), and also includes an insulator (5); the insulator (5) is fixed in the cavity (10) and located at the front end of the cover (12), and an anti-cavity groove is provided on the side of the insulator (5) near the cover (12), the contact (2) is fixed on the insulator (5), and the electrical connection part of the contact (2) and the cable (3) is exposed in the anti-cavity groove.

2. A cable connector as described in claim 1, characterized in that: The cover (12) is fixedly installed inside the cavity (10), and the cable (3) is fixed on the cover (12).

3. A cable connector as described in claim 2, characterized in that: The injection molding groove (120) is filled with a rubber strip (4) for filling the assembly gap between the cover (12) and the inner wall of the cavity (10). The plastic body (1) is provided with a glue injection hole (101) that communicates with the injection molding groove (120). The injection molding groove (120) is arranged around the peripheral side wall of the cover (12).

4. A cable connector as described in claim 1, characterized in that: The cable (3) includes a first cable (31) and a second cable (32) symmetrically arranged on the upper and lower sides of the cover (12). The clearance groove includes a first clearance groove (501) and a second clearance groove (502) symmetrically arranged on the upper and lower sides of the insulator (5). The electrical connection part of the first cable (31) and the contact body (2) is exposed in the first clearance groove (501), and the electrical connection part of the second cable (32) and the contact body (2) is exposed in the second clearance groove (502).

5. A cable connector as described in claim 1, characterized in that: The contact body (2) is a conductive terminal group, which includes a first terminal block (21) and a second terminal block (22) arranged at intervals. One end of the first terminal block (21) extends into the first clearance groove (501), and one end of the second terminal block (22) extends into the second clearance groove (502).

6. A cable connector as described in claim 5, characterized in that: The insulator (5) includes a first plastic part (51) and a second plastic part (52) that are interlocked with each other. The first plastic part (51) and the second plastic part (52) are respectively interlocked and fixed in the cavity (10) of the plastic body (1).

7. A cable connector as described in claim 6, characterized in that: The cover (12) includes an upper cover (121) and a lower cover (122) that are interlocked.

8. A cable connector as described in claim 7, characterized in that: On the left and right sides of the cover (12), an injection cavity (1201) is opened at the connection between the upper cover (121) and the lower cover (122). The injection cavity (1201) is connected to the injection groove (120). The injection cavity (1201) is filled with an injection strip (401) integrally injection molded with the rubber strip (4).

9. A cable connector as described in claim 8, characterized in that: The side of the plastic body (1) is provided with sealing holes (102) above and below the injection hole (101) respectively, which are connected to the injection cavity (1201). A connecting post (402) integrally formed with the rubber strip (4) is injected into the sealing hole (102).

10. A cable connector as described in claim 9, characterized in that: The upper cover (121) and the lower cover (122) are respectively snapped into the cavity (10) of the plastic body (1), and the gap between the snapping is filled with an injection block (403) integrally injection molded with the rubber strip (4).

11. A method for manufacturing a cable connector as described in claim 1, characterized in that, Includes the following steps: S1. The contact body (2) is integrally formed on the insulator (5), and one end of the contact body (2) extends into the recessed groove of the insulator (5); S2. Connect one end of the cable (3) to the contact body (2) electrically, and expose the electrical connection part in the recessed groove; S3. Inject the cover (12) onto the cable (3), and do not inject the cover at the clearance groove position; S4. Assemble the component obtained in step S3 into the cavity (10) of the plastic body (1), inject plastic strip material into the injection groove (120) of the cover (12) until the plastic strip material fills the assembly gap between the injection groove (120) and the inner wall of the cavity (10). After the plastic strip material is cured, the cable connector is obtained.

12. A connector assembly comprising a cable connector and a board-end connector (8), characterized in that: The cable connector is the cable connector according to any one of claims 1-10 or the cable connector manufactured by the method of manufacturing the cable connector according to claim 11.

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