Cable assembly connector

Abstract

The utility model relates to the technical field of connectors, in particular to a cable assembly connector. The cable assembly connector comprises an insulation main body and cable assemblies installed in the insulation main body, the upper side of the insulation main body is covered with a conductive shell, the rear side of the conductive shell is provided with an avoiding opening for avoiding cables, the conductive shell is electrically connected with shielding structures of the cable assemblies or electrically connected with cable shielding layers of the cable assemblies, and the cable assemblies are arranged in the avoiding opening. The cable assembly connector further comprises a locking screw, and the locking screw is used for fixedly assembling the conductive shell, the insulating main body, the PCB and the load backboard together and electrically conducting the conductive shell and the load backboard. The shielding structure of each cable assembly, the conductive shell and the load backboard at the bottom of the PCB are all electrically conducted, so that the conductive shell and the load backboard jointly form an outer shielding cover on the outer sides of the insulating main body and each cable assembly, and electromagnetic crosstalk between the cable assembly connector and other connectors in an application environment can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, and in particular to a cable assembly connector. Background Art

[0002] As the transmission rate requirements of connectors become higher and higher, the requirements for high-frequency performance indicators of connectors have become more stringent. How to reduce the high-frequency crosstalk of connectors is particularly important. Existing cable assembly connectors usually include an insulating body and a cable assembly installed in the insulating body. The cable assembly usually includes a terminal module and a cable connected to the terminal module. The terminal module includes differential terminals arranged in pairs, grounding terminals, and a plastic body that forms all terminals as a whole. The differential terminals arranged in pairs constitute a differential signal pair. The grounding terminal is arranged between two adjacent differential signal pairs, which can shield the two adjacent differential signal pairs to a certain extent, but the problem of mutual crosstalk between multiple differential signal pairs will still occur. In order to reduce crosstalk, shielding parts are added to the interior of the current cable assembly connector to improve the crosstalk problem in the connector, but this can only improve the crosstalk between the differential pairs inside the cable assembly or between the cable assemblies, and the crosstalk problem between the cable connector and other connectors in the application environment cannot be improved.

[0003] However, for connectors, high-frequency performance indicators include not only the impact between differential pairs within the product, but also the impact of electromagnetic interference between products on the high-speed performance of the product. Therefore, this structure still has the following defects for places with high high-frequency requirements or more demanding application scenarios: Existing products do not consider the impact of electromagnetic interference between connectors, and do not design electromagnetic compatibility performance. On motherboards with high-density connectors and high transmission requirements, the connectors affect each other, resulting in transmission rates that do not meet the requirements. Utility Model Content

[0004] The utility model aims to provide a cable assembly connector to solve the problem of crosstalk between the existing cable assembly connector and other connectors in the application environment.

[0005] To achieve the above purpose, the cable assembly connector of the utility model adopts the following technical solutions:

[0006] A cable assembly connector comprises an insulating body and a cable assembly installed in the insulating body, the upper side cover of the insulating body is provided with a conductive shell, the rear side of the conductive shell has an escape opening for escaping the cable, the conductive shell is electrically connected to the shielding structure of each cable assembly or the conductive shell is electrically connected to the cable shielding layer of each cable assembly, and the cable assembly connector also comprises a locking screw, which is used to fix the conductive shell, the insulating body and the PCB board and the load back plate at the bottom of the PCB board together and electrically connect the conductive shell and the load back plate.

[0007] Furthermore, the cable assembly includes a terminal module, a cable connected to the terminal module, and a shielding member arranged on one side of the terminal module. The shielding member is electrically connected to the ground terminal of the terminal module, the shielding member constitutes the shielding structure, and the conductive shell and the shielding members of each cable assembly are electrically connected.

[0008] Furthermore, a downwardly extending contact portion is provided on the top inner surface of the conductive shell corresponding to the shielding member of each cable assembly, and the contact portion abuts against the outer side surface of the shielding member of the corresponding cable assembly to achieve electrical conduction between the conductive shell and the shielding member of each cable assembly.

[0009] Furthermore, more than two installation grooves are provided in the insulating body, the front end of each cable assembly is respectively installed in each installation groove, and the rear end is the outlet end. The cables of each cable assembly are staggered left and right, and the contact parts are arranged in rows on the top inner surface of the conductive shell. The number of rows of contact parts is equal to the number of cable assemblies, and each row of contact parts abuts downwardly on the outer side surface of the shielding part of the corresponding cable assembly.

[0010] Furthermore, the installation groove is an obliquely extending installation groove with a low front end and a high rear end.

[0011] Furthermore, the contact portion is a row of downwardly extending oblique teeth, and the oblique surfaces of the oblique teeth abut against the shielding member of the cable assembly.

[0012] Furthermore, a blocking insulator for sealing each cable assembly in the insulating body is provided on the rear side of the insulating body, and the conductive shell and the blocking insulator are snap-connected.

[0013] Beneficial effect: The cable assembly connector of the utility model is improved on the basis of the existing cable connector. By arranging a conductive shell on the upper side of the insulating body, the conductive shell is electrically connected with the shielding structure of each cable assembly or the conductive shell is electrically connected with the cable shielding layer of each cable assembly, so that the conductive shell can provide shielding for the insulating body and the front end of each cable assembly from four directions: the upper side, the left side, the right side and the front side. The rear side is the cable outlet direction. It is inevitable that the connector is fixedly assembled on the PCB board by locking screws, and the load backplane at the bottom of the PCB board is electrically connected to the conductive shell by locking screws and the conductive shell. Conductivity makes the shielding structure of each cable assembly, the conductive shell and the load backplane at the bottom of the PCB board all electrically conductive. The load backplane at the bottom of the PCB board can provide shielding for the insulating body and the front end of each cable assembly from the bottom, so that the conductive shell and the load backplane at the bottom of the PCB board jointly form an outer shielding cover on the outside of the insulating body and each cable assembly, shielding the insulating body and each cable assembly from five directions: top, bottom, left, right and front. The rear side is the cable outlet direction, thereby avoiding electromagnetic crosstalk between the cable assembly connector and other connectors in the application environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an overall schematic diagram of the cable assembly connector of the utility model being fixedly installed on a PCB board;

[0015] Figure 2 This is an exploded view of the cable assembly connector and PCB board of the utility model;

[0016] Figure 3 A schematic diagram of the conductive housing and the shielding structure of the cable assembly being in electrical contact and conduction;

[0017] In the figure: 1. locking screw; 2. conductive shell; 201. avoidance; 202. bevel teeth; 3. cable assembly; 301. terminal module; 302. shielding member; 303. cable; 4. insulating body; 401. mounting groove; 5. sealing insulator; 6. PCB board; 7. insulating diaphragm; 8. load back plate. DETAILED DESCRIPTION

[0018] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0019] The cable assembly connector of the utility model is improved on the basis of the existing cable connector, and is mainly used to solve the problem that the shielding structure of the existing cable connector can only improve the crosstalk inside the connector but cannot improve the crosstalk generated between connectors.

[0020] The scheme principle of the cable assembly connector of the utility model is that the front end of each cable assembly is installed in the insulating body, and an outer shielding cover is formed by arranging an outer shielding structure on the outer side of the insulating body to wrap the front end of each cable assembly, thereby avoiding electromagnetic crosstalk between the cable assembly connector and other connectors in the application environment.

[0021] Based on the above principle, an embodiment of the cable assembly connector of the utility model is introduced:

[0022] like Figure 1-2As shown, the cable assembly connector includes a conductive shell 2, a cable assembly 3, an insulating body 4, a blocking insulator 5 and a locking screw 1. There are two cable assemblies 3, which are installed in the insulating body 4. The blocking insulator 5 is located at the rear side of the insulating body 4 to seal each cable assembly 3 in the insulating body 4. The conductive shell 2 is covered on the upper side of the insulating body 4. The conductive shell 2 and the blocking insulator 5 are snap-connected. The rear side of the conductive shell 2 has an escape opening 201 for escaping the cable 303. The conductive shell 2 is a groove-shaped shell, and four screw mounting holes are provided at the four corners of the groove-shaped shell. The insulating body 4 is correspondingly provided with four screw mounting holes. The conductive shell 2, the insulating body 4, the PCB board 6 and the load back plate 8 at the bottom of the PCB board are fixedly assembled together by four locking screws 1. The locking screw 1 passes through the conductive shell 2, the insulating body 4, the PCB board 6, and the insulating diaphragm 7 in sequence and then is screwed into the corresponding threaded hole on the load back plate 8. The locking screw 1 contacts the conductive housing 2 and is threadedly connected to the load back plate 8, and the conductive housing 2 and the load back plate 8 are electrically connected through the locking screw 1. The locking screw 1 also plays the role of fixing the connector and the PCB together and electrically connecting the conductive housing 2 of the connector and the load back plate 8 at the bottom of the PCB. The conductive housing 2 is electrically connected to the shielding structure of each cable assembly 3.

[0023] The cable assembly 3 includes a terminal module 301, a cable 303 connected to the terminal module 301, and a shielding member 302 arranged on one side of the terminal module 301. The shielding member 302 can be a shielding shell or a shielding sheet. The shielding member 302 is electrically conductive with the grounding terminal of the terminal module. The shielding member 302 constitutes the shielding structure of the cable assembly. The conductive shell 2 and the shielding members 302 of each cable assembly are electrically conductive. The electrical conductivity here only refers to electrical conductivity, and does not require contact electrical conductivity. It can be contact electrical conductivity, and electrical conductivity can also be achieved through other conductive members. The conductive shell and the shielding members of each cable assembly are electrically conductive, and the shielding members of each cable assembly are electrically conductive with the grounding terminal of the terminal module. The grounding terminal is between adjacent differential pairs, so that the shielding structures around each differential pair are all electrically conductive to the common ground, thereby enhancing the shielding effect, making the connectors have good electromagnetic compatibility, and further reducing the mutual influence between the connectors. Of course, in other embodiments, the conductive shell can be electrically connected to the ground terminal of the terminal module, and the ground terminal constitutes the shielding structure of the cable assembly; or the conductive shell can be electrically connected to the cable shielding layer, and the cable shielding layer can be electrically connected to the ground terminal of the terminal module.

[0024] The shielding structure of each cable assembly 3, the conductive shell 2 and the load back plate 8 at the bottom of the PCB board are all electrically connected, so that the conductive shell 2 and the load back plate 8 at the bottom of the PCB board together form an outer shielding cover on the outside of the insulating body 4 and each cable assembly 3, and the insulating body 4 and each cable assembly 3 are shielded from five directions: the top, the bottom, the left side, the right side, and the front side. The rear side is the cable outlet direction, which is inevitable, thereby avoiding electromagnetic crosstalk between the cable assembly connector and other connectors in the application environment.

[0025] like Figure 3 As shown, a contact portion extending downward is provided on the top inner surface of the conductive shell 2 corresponding to the shielding member 302 of each cable assembly. The contact portion is specifically a beveled tooth 202. The beveled teeth 202 are arranged in rows. The number of rows of the beveled teeth 202 is equal to the number of rows of the cable assembly 3. The inclined surface of each row of beveled teeth 202 abuts downward on the outer surface of the shielding member 302 of the corresponding cable assembly to achieve electrical conduction between the conductive shell 2 and the shielding member 302 of each cable assembly. The conductive shell 2 and the shielding member 302 of each cable assembly abut in the snap-fit ​​direction. The structure is simple and the contact is reliable. The beveled teeth are arranged in rows and abut against the shielding member of the cable assembly to be electrically conductive, so that the conductive shell and the shielding member of the cable assembly have multiple electrically conductive positions, which can improve the reliability of electrical conduction. In addition, the beveled teeth 202 are also in contact and conductive with the cable shielding layer of the cable assembly 3 at the same time.

[0026] Two mounting grooves 401 are provided in the insulating body 4. The front ends of the two cable assemblies 3 are respectively installed in the two mounting grooves 401, and the rear ends are the outlet ends. The cables 303 of the two cable assemblies are arranged in a left-right staggered manner. Two rows of bevel teeth 202 are provided on the top inner surface of the conductive shell 2, wherein the front row of bevel teeth downwardly abuts against the outer side of the shielding member of the front cable assembly, and the rear row of bevel teeth passes through the cable gap of the front cable assembly and abuts against the outer side of the shielding member of the rear cable assembly. The mounting groove 401 is an inclined extending mounting groove with a low front end and a high rear end. Under the condition that the thickness of the insulating body 4 is certain, more cable assemblies can be assembled on the insulating body 4, making the structure of the terminal module more compact, and making the front end contacts of each cable assembly in the same plane, which is convenient for contact with the PCB board. Of course, the mounting groove can also be a mounting groove with the same front and rear heights.

[0027] In addition, in addition to providing downwardly extending beveled teeth as contact portions on the top inner surface of the conductive shell, a spring sheet may be provided on the top inner surface of the conductive shell as a contact portion, and the spring sheet is electrically connected to the shielding member of each cable assembly by abutting against the shielding member. In another embodiment, the conductive shell and the shielding member of each cable assembly may be electrically connected through another conductive member, such as a soft connection. The contact portions on the conductive shell may not be arranged in a row, and the number of contact portions may be equal to the number of cable assemblies, and one contact portion is electrically connected to the shielding structure of one cable assembly.

[0028] Of course, there can be three or more cable assemblies, with the front ends of each cable assembly respectively installed in the installation grooves on the insulating body, and the rear ends being the outlet ends, so that the cables of each cable assembly are staggered left and right, and the cables of any cable assembly correspond to the cable gaps of adjacent cable assemblies, so that the bevel teeth on the conductive shell can pass downward through the cable gaps of the upper cable assembly and abut against the shielding member of the lower cable assembly.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the description and drawings of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cable assembly connector, comprising an insulating body (4) and a cable assembly (3) installed in the insulating body (4), characterized in that: The upper side cover of the insulating body (4) is provided with a conductive shell (2), the rear side of the conductive shell (2) has an escape opening (201) for escaping the cable (303), the conductive shell (2) is electrically connected to the shielding structure of each cable assembly (3) or the conductive shell (2) is electrically connected to the cable shielding layer of each cable assembly (3), and the cable assembly connector further comprises a locking screw (1), the locking screw (1) being used to fix the conductive shell (2), the insulating body (4) and the PCB board (6) and the load back plate (8) at the bottom of the PCB board (6) together and to electrically connect the conductive shell (2) and the load back plate (8).

2. The cable assembly connector according to claim 1, characterized in that: The cable assembly (3) comprises a terminal module (301), a cable (303) connected to the terminal module (301), and a shielding member (302) arranged on one side of the terminal module (301); the shielding member (302) is electrically conductive with a ground terminal of the terminal module (301); the shielding member (302) constitutes the shielding structure; and the conductive housing (2) and the shielding member (302) of each cable assembly (3) are electrically conductive.

3. The cable assembly connector according to claim 2, characterized in that: A contact portion extending downward is provided on the top inner surface of the conductive housing (2) corresponding to the shielding member (302) of each cable assembly (3); the contact portion abuts against the outer side surface of the shielding member (302) of the corresponding cable assembly (3) to achieve electrical conduction between the conductive housing (2) and the shielding member (302) of each cable assembly (3).

4. The cable assembly connector according to claim 3, characterized in that: The insulating body (4) is provided with more than two installation grooves (401), the front ends of the cable assemblies (3) are respectively installed in the installation grooves (401), and the rear ends are outlet ends. The cables (303) of the cable assemblies (3) are arranged in a left-right staggered manner. The contact portions are arranged in rows on the top inner surface of the conductive housing (2), the number of rows of the contact portions being equal to the number of the cable assemblies (3), and each row of the contact portions abuts downwardly against the outer side surface of the shielding member (302) of the corresponding cable assembly (3).

5. The cable assembly connector according to claim 4, characterized in that: The mounting groove (401) is an obliquely extending mounting groove with a low front end and a high rear end.

6. The cable assembly connector according to claim 3, characterized in that: The contact portions are downwardly extending bevel teeth arranged in rows, and the bevel surfaces of the bevel teeth abut against the shielding component (302) of the cable assembly (3).

7. The cable assembly connector according to any one of claims 1 to 6, characterized in that: A blocking insulator (5) for sealing each cable assembly (3) in the insulating body (4) is provided on the rear side of the insulating body (4), and the conductive housing (2) and the blocking insulator (5) are snap-connected.

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