Cable grounding connection structure
By designing the grounding pin to directly contact the metal shell and integrating it with the injection-molded fixing block, the problems of complex operation and high cost of cable grounding structures are solved, achieving a grounding connection with good conductivity and an aesthetically pleasing appearance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEISIT ELECTRIC TECH HANGZHOU CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-05-19
AI Technical Summary
Existing cable grounding structures are complex to operate, costly, and aesthetically unappealing, making them difficult to meet usage requirements.
The structure design, which allows the grounding pin to directly contact the metal shell, and the connection cable, which is integrally formed by injection molding fixing block, achieves a grounding connection with good conductivity and high cost performance.
It simplifies the operation process, reduces costs, and improves conductivity and aesthetics.
Smart Images
Figure CN224264407U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cables, and in particular to a cable grounding connection structure. Background Technology
[0002] Cables are widely used in various technical fields. To ensure safe use, a grounding structure is required, including an insulating base for connecting the cable and a metal shell. The cable's shielding layer is connected to the metal shell through a grounding pin to achieve the grounding function.
[0003] In the prior art, multiple cable shielding layers are crimped onto the metal shell using fork-shaped terminals, and the fork-shaped terminals are fixed to the metal shell with screws, thereby solving the problem of poor conductivity of the shielding. However, this method is complicated to operate and the machined metal shell is expensive. At the same time, epoxy resin is filled inside the metal shell to fix the insulator and the cable. However, this method cannot guarantee the consistency of the product after the epoxy resin is cured, and the appearance is not aesthetically pleasing, which cannot meet the usage requirements.
[0004] Therefore, how to provide a simple and convenient cable grounding connection structure is a technical problem that needs to be solved by those skilled in the art. Utility Model Content
[0005] The purpose of this utility model is to provide a cable grounding connection structure in which the grounding pin is in direct contact with the metal shell, resulting in good conductivity, high cost performance, and multiple cables are integrally molded through a mold, making it convenient to operate, providing good protection, and being aesthetically pleasing.
[0006] To solve the above-mentioned technical problems, this utility model provides a cable grounding connection structure, characterized in that it includes an insulating base, an injection-molded fixing block, and a metal shell. A grounding pin is installed on the outer wall of the insulating base, and the grounding pin is connected to the shielding layer of the cable. A socket tube is installed inside the insulating base, and the core of the cable is inserted into the socket tube. The injection-molded fixing block is integrally injection molded and connected to the insulating base to fix the position of the cable. The metal shell is fitted on the outside of the insulating base and the injection-molded fixing block, and the inner wall of the metal shell contacts the grounding pin.
[0007] Preferably, the outer walls of the two opposite long sides of the insulating base are provided with externally open fixing grooves, the end of the grounding pin is embedded in the fixing groove, and the head end of the grounding pin protrudes from the head end face of the insulating base and presses against the shielding layer.
[0008] Preferably, the opening at the first end of the fixing groove is located at the first end face of the insulating base, a stop groove is provided at the first end of the fixing groove, a stop boss is provided in the middle of the grounding pin, and the stop surfaces of the stop groove and the stop boss are in contact.
[0009] Preferably, the grounding pin has an outwardly protruding eccentric boss at its end, and the eccentric boss contacts the inner wall of the metal housing.
[0010] Preferably, the two opposite short outer walls of the insulating base are provided with open injection grooves, and the ends of the injection fixing block are provided with two injection arms, which are embedded in the injection grooves.
[0011] Preferably, the insulating base has multiple mounting holes arranged in an array inside, and multiple insertion tubes are inserted into the mounting holes.
[0012] Preferably, a first barb is provided in the middle of the outer wall of the insertion tube, and the first barb is interference-fitted with the inner wall of the mounting hole and prevents it from slipping.
[0013] Preferably, the outer periphery of the injection-molded fixing block matches the inner cavity shape of the metal housing and is provided with a limiting step. The injection-molded fixing block and the insulating base are inserted into the inner cavity of the metal housing and pressed together.
[0014] Preferably, the outer wall of the injection-molded fixing block is provided with a raised rib at the first end, and the raised rib is interference-fitted with the inner cavity of the metal shell to prevent water and oil.
[0015] Preferably, the inner end of the metal housing is provided with a second barb, which is interference-fitted with the outer wall of the injection-molded fixing block and prevents it from slipping.
[0016] This utility model provides a cable grounding connection structure, including an insulating base, an injection-molded fixing block, and a metal shell. A grounding pin is installed on the outer wall of the insulating base, and the grounding pin connects to the cable's shielding layer. A socket tube is installed inside the insulating base, and the cable core is inserted into the socket tube. The injection-molded fixing block is integrally injection-molded and connects to the insulating base, fixing the position of the cable. The metal shell is fitted onto the outside of the insulating base and the injection-molded fixing block, and the inner wall of the metal shell contacts the grounding pin. By using a customized grounding pin, direct contact with the metal shell is achieved, realizing the grounding function. It offers good conductivity, high cost-effectiveness, and allows multiple cables to be integrally injection-molded through the fixing block, making operation convenient, providing good protection, and resulting in an aesthetically pleasing appearance. Attached Figure Description
[0017] Figure 1 An exploded view of a specific embodiment of the cable grounding connection structure provided by this utility model;
[0018] Figure 2 This is a schematic diagram illustrating the installation process of one specific embodiment of the cable grounding connection structure provided by this utility model.
[0019] Figure 3A cross-sectional schematic diagram of a specific embodiment of the cable grounding connection structure provided by this utility model;
[0020] Figure 4 A schematic diagram of the insulating base in one specific embodiment of the cable grounding connection structure provided by this utility model;
[0021] Figure 5 A schematic diagram of the grounding pin in one specific embodiment of the cable grounding connection structure provided by this utility model;
[0022] Figure 6 A schematic diagram of the insertion tube in a specific embodiment of the cable grounding connection structure provided by this utility model;
[0023] Figure 7 This is a schematic diagram of the metal casing in one specific embodiment of the cable grounding connection structure provided by this utility model.
[0024] The components include: insulating base 1, fixing groove 11, stop groove 12, injection groove 13, mounting hole 14, injection fixing block 2, injection arm 21, protruding rib 22, metal shell 3, second barb 31, grounding pin 4, stop boss 41, eccentric boss 42, insertion tube 5, first barb 51, and cable 6. Detailed Implementation
[0025] The core of this utility model is to provide a cable grounding connection structure in which the grounding pin is in direct contact with the metal shell, resulting in good conductivity, high cost performance, and multiple cables are integrally molded through a mold, making it convenient to operate, providing good protection, and being aesthetically pleasing.
[0026] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0027] Please refer to Figures 1 to 3 , Figure 1 An exploded view of a specific embodiment of the cable grounding connection structure provided by this utility model; Figure 2 This is a schematic diagram illustrating the installation process of one specific embodiment of the cable grounding connection structure provided by this utility model. Figure 3 This is a cross-sectional schematic diagram of a specific embodiment of the cable grounding connection structure provided by this utility model.
[0028] This utility model provides a cable grounding connection structure, including an insulating base 1, an injection-molded fixing block 2, and a metal shell 3. A grounding pin 4 is installed on the outer wall of the insulating base 1, and a socket tube 5 is installed inside the insulating base 1. The grounding pin 4 is connected to the shielding layer of the cable 6, and the core of the cable 6 is inserted into the socket tube 5. The end of each component closer to the cable 6 is the beginning end, and the end farther away from the cable 6 is the end end. During installation, multiple socket tubes 5 are installed inside the insulating base 1, the grounding pin 4 is installed on the outer wall of the insulating base 1, the core of the cable 6 is inserted into each socket tube 5, and the grounding pin 4 is connected to the shielding layer of the cable 6. Then, the injection-molded fixing block 2 is directly connected to the insulating base 1 and the position of the cable 6 is fixed by one-piece injection molding. The metal shell 3 is fitted on the outside of the insulating base 1 and the injection-molded fixing block 2, and the inner wall of the metal shell 3 contacts the grounding pin 4.
[0029] By using a customized grounding pin, it makes direct contact with the metal shell to achieve the grounding function. It has good conductivity and high cost performance. At the same time, multiple cables are integrally injection molded through injection molding fixing blocks, which makes operation convenient, provides good protection, and looks beautiful and stylish.
[0030] Please refer to Figures 4 to 7 , Figure 4 A schematic diagram of the insulating base in one specific embodiment of the cable grounding connection structure provided by this utility model; Figure 5 A schematic diagram of the grounding pin in one specific embodiment of the cable grounding connection structure provided by this utility model; Figure 6 A schematic diagram of the insertion tube in a specific embodiment of the cable grounding connection structure provided by this utility model; Figure 7 This is a schematic diagram of the metal casing in one specific embodiment of the cable grounding connection structure provided by this utility model.
[0031] In the cable grounding connection structure provided in the specific embodiment of this utility model, the outer walls of the two opposite long sides of the insulating base 1 are provided with an open fixing groove 11, which can make the two fixing grooves 11 staggered. The end of the grounding pin 4 is embedded in the fixing groove 11, and the head end of the grounding pin 4 protrudes out of the head end face of the insulating base 1 and is pressed against the shielding layer.
[0032] Specifically, the opening at the first end of the fixing groove 11 is located at the first end face of the insulating base 1. At the same time, a stop groove 12 is provided at the first end of the fixing groove 11, and a stop boss 41 is provided in the middle of the grounding pin 4. Both the stop groove 12 and the stop boss 41 are provided with multiple stop surfaces. During installation, the stop surfaces of the two components fit together to restrict the rotation of the grounding pin 4.
[0033] Preferably, the grounding pin 4 has an outwardly protruding eccentric boss 42 at its end. The eccentric boss 42 contacts the inner wall of the metal housing 3. After the metal housing 3 is installed, the inner wall of the metal housing 3 contacts the eccentric boss 42 of the grounding pin 4 to achieve the grounding function.
[0034] In the cable grounding connection structure provided in this specific embodiment of the utility model, the two opposite short outer walls of the insulating base 1 are each provided with an open injection molding groove 13. The end of the injection molding fixing block 2 is provided with two injection molding arms 21, which are embedded in the injection molding groove 13. Specifically, the injection molding groove 13 is a T-shaped groove, and the shape of the injection molding arm 21 matches the shape of the T-shaped groove. This ensures that a portion of the injection molding arm 21 formed during the integral molding of the injection molding fixing block 2 fills the injection molding groove 13, preventing the injection molding fixing block 2 from easily separating from the insulating base 1 due to external factors, thus limiting movement.
[0035] Furthermore, the insulating base 1 has multiple mounting holes 14 arranged in an array inside, and multiple insertion tubes 5 are inserted into the mounting holes 14. Preferably, the outer wall of the insertion tube 5 is provided with a first barb 51 in the middle, and the first barb 51 is interference-fitted with the inner wall of the mounting hole 14 and prevents it from slipping. After the insertion tube 5 is crimped with the wire core, it is inserted into the insulating base 1. It is prevented from slipping by the interference fit between the first barb 51 and the mounting hole 14. After the grounding pin 4 is crimped with the shielding layer, it is inserted into the fixing groove 11 of the insulating base 1, and the stop surface of the grounding pin 4 is stopped and fixed with the fixing groove 11.
[0036] Based on the cable grounding connection structure provided in the above specific embodiments, the outer circumference of the injection-molded fixing block 2 matches the inner cavity shape of the metal housing 3, and a limiting step is provided. The injection-molded fixing block 2 and the insulating base 1 are inserted into the inner cavity of the metal housing 3 and pressed together. Further, a protruding rib 22 is provided at the first end of the outer wall of the injection-molded fixing block 2, and the protruding rib 22 is interference-fitted with the inner cavity of the metal housing 3. A second barb 31 is provided at the first end of the inner cavity of the metal housing 3, and the second barb 31 is interference-fitted with the outer wall of the injection-molded fixing block 2 and prevents it from slipping out.
[0037] After injection molding, the injection molding fixing block 2 fixes the cable 6 and connects it to the insulating base 1. Then, the injection molding fixing block 2 is pressed and squeezed into the conformal inner cavity of the customized metal shell 3 by a press. The protruding rib 22 on the injection molding fixing block 2 is press-fitted with the metal shell 3 to achieve dustproof and waterproof function. The second barb 31 on the metal shell 3 is press-fitted with the injection molding fixing block 2 to achieve the anti-reverse function. The eccentric boss 42 on the grounding pin 4 is pressed and contacted with the metal shell 3 to achieve cable shielding and shell conduction.
[0038] The cable grounding connection structure provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.
Claims
1. A cable grounding connection structure, characterized in that, The device includes an insulating base (1), an injection-molded fixing block (2), and a metal shell (3). The outer wall of the insulating base (1) is equipped with a grounding pin (4), which is connected to the shielding layer of the cable (6). The insulating base (1) is equipped with a socket tube (5), and the core of the cable (6) is inserted into the socket tube (5). The injection-molded fixing block (2) is integrally injection molded and connected to the insulating base (1) to fix the position of the cable (6). The metal shell (3) is fitted on the outside of the insulating base (1) and the injection-molded fixing block (2), and the inner wall of the metal shell (3) contacts the grounding pin (4).
2. The cable grounding connection structure according to claim 1, characterized in that, The insulating base (1) has two long outer walls with open fixing grooves (11) on the outside. The end of the grounding pin (4) is embedded in the fixing groove (11), and the head of the grounding pin (4) protrudes from the head end face of the insulating base (1) and presses against the shielding layer.
3. The cable grounding connection structure according to claim 2, characterized in that, The opening at the first end of the fixing groove (11) is located at the first end face of the insulating base (1). A stop groove (12) is provided at the first end of the fixing groove (11). A stop boss (41) is provided in the middle of the grounding pin (4). The stop surfaces of the stop groove (12) and the stop boss (41) are in contact.
4. The cable grounding connection structure according to claim 3, characterized in that, The grounding pin (4) has an outwardly protruding eccentric boss (42) at its end, and the eccentric boss (42) contacts the inner wall of the metal shell (3).
5. The cable grounding connection structure according to claim 2, characterized in that, The insulating base (1) has two open injection grooves (13) on its two opposite short outer walls. The injection fixing block (2) has two injection arms (21) at its end, which are embedded in the injection grooves (13).
6. The cable grounding connection structure according to claim 2, characterized in that, The insulating base (1) has multiple mounting holes (14) arranged in an array inside, and multiple insertion tubes (5) are inserted into the mounting holes (14).
7. The cable grounding connection structure according to claim 6, characterized in that, The outer wall of the insertion tube (5) is provided with a first barb (51), which is interference-fitted with the inner wall of the mounting hole (14) and prevents it from slipping.
8. The cable grounding connection structure according to any one of claims 1 to 7, characterized in that, The outer periphery of the injection molding fixing block (2) matches the inner cavity shape of the metal shell (3) and is provided with a limiting step. The injection molding fixing block (2) and the insulating base (1) are inserted into the inner cavity of the metal shell (3) and pressed together.
9. The cable grounding connection structure according to claim 8, characterized in that, The injection-molded fixing block (2) has a raised rib (22) at the first end of its outer wall. The raised rib (22) is interference-fitted with the inner cavity of the metal shell (3) to prevent water and oil from entering.
10. The cable grounding connection structure according to claim 9, characterized in that, The inner end of the metal shell (3) is provided with a second barb (31), which is interference-fitted with the outer wall of the injection molding fixing block (2) and prevents it from slipping.