Connector with internal multi-stage locking

Abstract

The invention relates to the technical field of connectors, in particular to a connector with internal multistage locking. The connector comprises a wire end piece, a plate end piece and a plurality of terminal assemblies, wherein the wire end piece and the plate end piece are clamped with each other, and each terminal assembly comprises a front terminal and a rear terminal. A plurality of first slotted holes with different sizes are formed in the wire end piece, and a lock catch structure is arranged in the wire end piece and is used for locking the front terminal for the first time; in addition, a locking groove is formed in the middle of the wire end piece, a locking piece can be installed in the locking groove, and secondary locking of the front terminal is achieved by moving the locking piece. Through a multi-stage locking mechanism, the stability and reliability of the connector are improved, the front terminal is effectively prevented from loosening due to vibration or impact, and the safety of electrical connection is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of connectors, and in particular to a connector with internal multi-stage locking. Background Art

[0002] As an important electrical connection device, electrical connectors are widely used in electronic equipment, communication systems, automotive industry and other fields. With the development of technology, electrical connectors not only need to have basic conductive functions, but also need to meet higher reliability and safety requirements. Traditional electrical connectors are usually connected by simple plug-in methods, but in some application scenarios, such as high vibration environments or high reliability requirements, this simple connection method often cannot meet the needs. Therefore, the improvement and optimization of electrical connectors is particularly important.

[0003] In order to improve the reliability and stability of electrical connectors, existing technical solutions mainly adopt a variety of methods. For example, some designs introduce spring sheets to enhance the contact force and ensure the tightness of the connection; other designs add locking structures such as screws or buckles to prevent the connector from loosening due to vibration; and some designs use multi-point contact to improve the stability and conductivity of the connection. These methods have improved the performance of electrical connectors to a certain extent, but there are still shortcomings.

[0004] However, existing electrical connectors still have problems with unstable connections and easy loosening when facing high vibration or high reliability application scenarios. Especially for situations that require multiple plugging and unplugging, a single locking structure often cannot guarantee long-term stability and reliability. In addition, most existing locking structures are relatively complex, inconvenient to install and maintain, and increase the cost of use. Summary of the invention

[0005] The purpose of the present application is to provide a connector with internal multi-stage locking, which improves the stability and reliability of the connector.

[0006] The present application provides a connector with internal multi-stage locking, which adopts the following technical solution: A connector with internal multi-stage locking, comprising a wire end piece and a board end piece that are mutually clamped, and also comprising a plurality of terminal assemblies, wherein the terminal assemblies include a front terminal and a rear terminal; The wire end piece is provided with a plurality of first slots of different sizes, the plurality of front terminals are respectively placed in the plurality of first slots, a locking structure is provided inside the first slots, and the locking structure is used to lock the front terminals inserted into the first slots; A locking groove is provided on one side of the middle of the wire end piece, and a locking piece is detachably provided in the locking groove. The locking piece is used for secondary locking the front terminal inserted into the first slot when moving toward the middle of the wire end piece.

[0007] By adopting the above technical solution, the present application sets a multi-level locking structure, so that the connector can maintain a stable connection state in a high vibration environment, effectively preventing the connector from loosening due to vibration. The locking structure inside the first slot can initially lock the front terminal, and the locking member can lock the front terminal for a second time. The double locking mechanism greatly improves the stability and reliability of the connector.

[0008] Furthermore, a clamping groove is provided on a side of the front terminal close to the locking structure, and the clamping groove is used to accommodate the locking structure so that the front terminal is locked in the first slot.

[0009] By adopting the above technical solution, the present application locks the front terminal in the first slot through the cooperation between the snap-fitting slot and the locking structure, thereby improving the stability and reliability of the connector.

[0010] Further, the locking structure includes an elastic part and a buckle part, the top end of the elastic part is connected to the inner wall of the first slot hole, the initial position of the end of the elastic part has a certain gap with the inner wall of the first slot hole, and the buckle part is arranged on the side of the end of the elastic part away from the inner wall of the first slot hole; When the front terminal is inserted into the first slot, the elastic portion is pressed by the front terminal and is compressed toward the inner wall of the first slot; When the front terminal is inserted into the clamping slot close to the buckle portion, the elastic portion rebounds in a direction close to the front terminal, and the buckle portion is clamped into the clamping slot of the front terminal, so that the front terminal is locked in the first slot hole.

[0011] By adopting the above technical solution, the present application enables the front terminal to be smoothly inserted into the slot through an elastic locking structure, and locks the front terminal after insertion, thereby improving the stability and reliability of the connector.

[0012] Further, the locking member is provided with a plurality of through slots at positions corresponding to the first slotted hole, the through slots comprising a receiving portion and a locking portion that are interconnected, the locking portion being located on a side of the receiving portion away from the middle of the wire end piece, and the cross section of the locking portion being smaller than that of the receiving portion; When the locking member is located at the initial position, the front terminal is located in the accommodation portion; When the locking piece moves toward the middle of the wire end piece, the front terminal is inserted into the locking portion so that the front terminal is locked in the first slot.

[0013] By adopting the above technical solution, the present application performs secondary locking of the front terminal through the locking member, thereby further improving the stability and reliability of the connector.

[0014] Furthermore, limiting protrusions are provided on both sides of the clamping groove, and two limiting grooves are provided on the inner wall of the first slot hole close to the limiting protrusions, and the limiting grooves are used to accommodate the limiting protrusions.

[0015] By adopting the above technical solution, the present application limits the position of the front terminal inserted into the slot through the limiting protrusion, and can also prevent the reverse insertion.

[0016] Furthermore, the plate end piece is provided with a plurality of second slots of different sizes, the second slots correspond to the first slots in one-to-one position, and the plurality of rear terminals are respectively placed in the plurality of second slots; A first sinking structure is provided at the top edge of the second slot hole.

[0017] By adopting the above technical solution, the present application can increase the creeping distance between the rear terminals inserted into the second slot holes through the first sinking groove structure, and can effectively reduce the occurrence of short circuits.

[0018] Furthermore, a second sinking groove structure is provided inside the first sinking groove structure of the second slot hole.

[0019] By adopting the above technical solution, the second sinking groove structure and the first sinking groove structure provided in the present application can be combined to further increase the creeping distance between the rear terminals inserted into the second slot holes.

[0020] Furthermore, the outer wall of the wire end piece is provided with a plurality of guide columns, and the inner wall of the plate end piece is provided with a plurality of guide grooves; The guide groove is used to accommodate the guide column so that the wire end piece can be inserted into the interior of the plate end piece.

[0021] By adopting the above technical solution, the present application sets guide posts and guide grooves to make it easier to insert the wire end pieces into the board end pieces, thereby effectively simplifying the installation process.

[0022] Furthermore, the outer wall of the wire end piece is provided with a plurality of fixing blocks, and the inner wall of the plate end piece is provided with a plurality of fixing grooves; The fixing groove is used to accommodate the fixing block so that the wire end piece is clamped with the board end piece.

[0023] By adopting the above technical solution, the present application sets guide posts and guide grooves so that the wire end pieces can be more stably connected after being inserted into the board end pieces, thereby effectively improving the stability and reliability of the connector.

[0024] Furthermore, the first slots of different sizes are staggered in distribution.

[0025] By adopting the above technical solution, the present application can more reasonably utilize the connector size layout by staggering the large slots and small slots.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. This application sets up a multi-level locking structure to enable the connector to maintain a stable connection state in a high vibration environment, effectively preventing the connector from loosening due to vibration. The locking structure inside the first slot can initially lock the front terminal, and the locking piece can lock the front terminal for a second time. The double locking mechanism greatly improves the stability and reliability of the connector; 2. The present application limits the position of the front terminal inserted into the slot through the limiting protrusion, and can also prevent reverse insertion; 3. The present application can increase the creeping distance between the rear terminals inserted into the second slot holes through the first sinking groove structure, which can effectively reduce the occurrence of short circuits. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 It is a schematic diagram of the structure of the plate end member and the locking member of Example 1 of the present application; Figure 3 is a schematic diagram of the plate end member structure of Example 1 of the present application; Figure 4 is a schematic diagram of a cross-sectional structure of a plate end member of Example 1 of the present application; Figure 5 It is a schematic diagram of the overall structure of the terminal assembly of Example 1 of the present application; Figure 6 is a schematic diagram of the overall structure of the locking member of Example 1 of the present application; Figure 7 It is a schematic diagram of the overall structure of the plate end member of Example 1 of the present application; Figure 8 is a schematic diagram of a cross-sectional structure of a plate end member of Example 2 of the present application; In the figure, 1, wire end piece; 11, first slot; 12, locking structure; 121, elastic part; 122, snap part; 13, locking groove; 14, limiting groove; 15, guide column; 16, fixing block; 2, board end piece; 21, second slot; 22, first sinking groove structure; 23, second sinking groove structure; 24, guide groove; 25, fixing groove; 3, terminal assembly; 31, front terminal; 311, snap-fit ​​groove; 312, limiting protrusion; 32, rear terminal; 4, locking piece; 41, through-slot; 411, accommodating part; 412, locking part. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1 -Attached Figure 8 , the technical solutions in the embodiments of the present application are clearly and completely described. The described embodiments are only possible technical implementations of the present invention, not all possible implementations. Those skilled in the art can completely combine the embodiments of the present invention to obtain other embodiments without creative work, and these embodiments are also within the scope of protection of the present invention.

[0029] The inventor of the present application found that existing connectors are prone to loosening in high-vibration environments, affecting the stability and reliability of the connection. For this reason, the present application mainly adopts the following connector with an internal multi-stage locking structure, which achieves the effect of improving the stability and reliability of the connector through a multi-stage locking structure. The present application is further described in detail below.

[0030] Embodiment 1: The connector with multi-stage locking provided in the embodiment of the present application is referred to Figure 1 , Figure 2 , Figure 3 and Figure 4 , including a wire end piece 1, a board end piece 2 and a plurality of terminal assemblies 3, wherein the terminal assemblies 3 include a front terminal 31 and a rear terminal 32. The wire end piece 1 is provided with a plurality of first slots 11 of different sizes, and the front terminals 31 of different sizes are respectively placed in the first slots 11 of corresponding sizes. A locking structure 12 is provided inside the first slot 11, and the locking structure 12 is used to lock the front terminal 31 inserted into the first slot 11. A locking groove 13 is provided on one side of the middle of the wire end piece 1, and a locking member 4 is detachably provided in the locking groove 13, and the locking member 4 is used to lock the front terminal 31 inserted into the first slot 11 for a second time when it moves toward the middle of the wire end piece 1.

[0031] In the specific implementation process, the front terminal 31 includes a metal sheet and a plastic insulator. The metal sheet can be a copper alloy or stainless steel, and has good conductivity and corrosion resistance. The plastic insulator can be polycarbonate or ABS plastic, and has good insulation and mechanical strength. The size of the first slot 11 can be adjusted according to the actual application requirements to adapt to different types and sizes of front terminals 31. The first slots 11 of different sizes are staggered to avoid interference between adjacent first slots 11 and improve the stability and reliability of the connector. The staggered distribution can be achieved by designing the position and spacing of the first slots 11. For example, the positions of the first slots 11 of different sizes can be staggered by a certain distance, or the spacing of the first slots 11 can be designed to different values ​​to achieve the best staggered effect.

[0032] like Figure 3 , Figure 4 and Figure 5As shown, a snap-in groove 311 is provided on one side of the front terminal 31 of the embodiment of the present application close to the locking structure, and the snap-in groove 311 is used to accommodate the locking structure 12, so that the front terminal 31 is locked in the first slot 11. Limiting protrusions 312 are provided on both sides of the snap-in groove 311, and two limiting grooves 14 are provided on the inner wall of the first slot 11 close to the limiting protrusion 312, and the limiting grooves 14 are used to accommodate the limiting protrusion 312. The locking structure 12 includes an elastic part 121 and a snap-in part 122. The elastic part 121 can be a spring steel sheet or other elastic member, which has good elasticity and durability. The snap-in part 122 can be a protrusion in the shape of an inverted triangle, which has a good fixing effect. The top of the elastic part 121 is connected to the inner wall of the first slot 11, and the initial position of the end of the elastic part 121 has a certain gap with the inner wall of the first slot 11. When the front terminal 31 is inserted into the first slot 11, the elastic portion 121 is pressed by the front terminal 31 and is compressed toward the inner wall of the first slot 11. When the front terminal 31 is inserted into the snap-fit ​​groove 311 and is close to the buckle portion 122, the elastic portion 121 rebounds toward the front terminal 31, and the buckle portion 122 is snapped into the snap-fit ​​groove 311 of the front terminal 31, so that the front terminal 31 is locked in the first slot 11.

[0033] like Figure 6 As shown, the locking member 4 of the embodiment of the present application is provided with a plurality of through slots 41 at positions corresponding to the first slot hole 11. The through slots 41 include a receiving portion 411 and a locking portion 412 that are interconnected. The locking portion 412 is located on a side of the receiving portion 411 away from the middle of the wire end piece 1, and the cross section of the locking portion 412 is smaller than the receiving portion 411. When the locking member 4 is located at the initial position, the front terminal 31 is located in the receiving portion 411. When the locking member 4 moves toward the middle of the wire end piece 1, the front terminal 31 is snapped into the locking portion 412, so that the front terminal 31 is locked in the first slot hole 11.

[0034] like Figure 7 As shown, the plate end piece 2 of the embodiment of the present application is provided with a plurality of second slots 21 of different sizes, the second slots 21 correspond to the first slots 11 in position, a plurality of rear terminals 32 are respectively placed in the plurality of second slots 21, and a first sinking groove structure 22 is provided at the top edge of the second slots 21. The rear terminal 32 can be made of copper alloy or aluminum, and has good electrical conductivity and heat dissipation performance. The size and shape of the second slots 21 can be adjusted according to actual application requirements to accommodate different types of rear terminals 32. The first sinking groove structure 22 can increase the creeping distance between the rear terminals 32 inserted into the second slots 21, and can effectively reduce the occurrence of short circuits.

[0035] like Figure 3 and Figure 7As shown, the outer wall of the wire end piece 1 of the embodiment of the present application is provided with a plurality of guide posts 15, and the inner wall of the plate end piece 2 is provided with a plurality of guide grooves 24. The guide grooves 24 are used to accommodate the guide posts 15 so that the wire end piece 1 can be inserted into the inside of the plate end piece 2. The guide posts 15 can be cylindrical or prismatic, and have a good guiding effect. The guide grooves 24 can be straight or curved, and have a good guiding effect. The outer wall of the wire end piece 1 is also provided with a plurality of fixing blocks 16, and the inner wall of the plate end piece 2 is provided with a plurality of fixing grooves 25. The fixing grooves 25 are used to accommodate the fixing blocks 16 so that the wire end piece 1 is clamped with the plate end piece 2. The fixing blocks 16 can be plastic blocks or metal blocks, and have a good fixing effect. The fixing grooves 25 can be rectangular or trapezoidal, and have a good clamping effect.

[0036] The implementation principle of the embodiment of the present application is as follows: by setting a multi-stage locking structure, the connector can maintain a stable connection state in a high vibration environment, effectively preventing the connector from loosening due to vibration. The locking structure 12 inside the first slot 11 can preliminarily lock the front terminal 31, and the locking member 4 can secondarily lock the front terminal 31. The double locking mechanism greatly improves the stability and reliability of the connector. In addition, by setting the guide column 15 and the guide groove 24, as well as the fixing block 16 and the fixing groove 25, the wire end piece 1 can be easily inserted into the board end piece 2 and firmly fixed together, thereby improving the installation and maintenance convenience of the connector. In general, the connector of the embodiment of the present application has high reliability and stability, and is suitable for various application scenarios with high vibration and high reliability requirements.

[0037] Embodiment 2: The connector with multi-stage locking provided in this embodiment is referred to Figure 8 , which is different from the above-mentioned embodiment in that: a second sinking groove structure 23 may be further provided inside the first sinking groove structure 22 .

[0038] The implementation principle of this embodiment is: by setting the second groove structure 23 and the first groove structure 22 in combination, the gap between the inner wall is increased. When calculating the crawling distance, it is necessary to first go along the bottom and then along the inner wall to the surface and then to another inner wall. This can further increase the crawling distance between the rear terminals 32 inserted into the second slot hole 21.

[0039] Embodiment 3: The connector with multi-stage locking provided in this embodiment is different from the above-mentioned embodiment in that the structure of the locking member 4 is optimized to further improve the stability and reliability of the connector. The locking member 4 of the embodiment of the present application includes a main body and a plurality of locking claws. The main body can be a metal rod or a plastic rod, which has good mechanical strength and durability. The locking claw can be a metal claw or a plastic claw, which has a good fixing effect. One end of the locking claw is fixed to the main body, and the other end is free to extend. When the locking member 4 moves toward the middle of the wire end member 1, the locking claw will gradually extend into the first slot 11, and form a snap connection with the snap-in groove 311 of the front terminal 31, thereby achieving secondary locking.

[0040] In the specific implementation process, the shape of the locking claw can be adjusted according to the actual application requirements, for example, it can be designed to be a right angle, an arc or other shapes to adapt to different types of front terminals 31. The length and width of the locking claw can also be adjusted according to the size of the first slot 11 to ensure that the locking claw can smoothly enter the first slot 11 and form a snap connection with the snap connection groove 311 of the front terminal 31.

[0041] The main body of the locking member 4 may also be provided with a handle, which may be a plastic handle or a rubber handle, and has a good grip and anti-slip effect. The shape of the handle may be designed according to ergonomic principles, for example, it may be designed to be flat, cylindrical or other shapes to improve the user's operating comfort. The surface of the handle may also be provided with anti-slip textures to increase friction and prevent hand slippage.

[0042] The implementation principle of this embodiment is: by optimizing the structure of the locking member 4, the connector can achieve secondary locking more effectively, further improving the stability and reliability of the connector. The design of the locking claw enables the locking member 4 to better form a snap connection with the snap-in groove 311 of the front terminal 31, thereby achieving a more secure locking effect. The design of the handle enables the user to operate the locking member 4 more conveniently, improving the convenience of installation and maintenance of the connector. In general, the connector of this embodiment has higher reliability and stability, and is suitable for various application scenarios with high vibration and high reliability requirements.

[0043] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A connector with internal multi-stage locking, characterized in that: It comprises a wire end piece (1) and a plate end piece (2) which are clamped together, and also comprises a plurality of terminal assemblies (3), wherein the terminal assemblies (3) comprise a front terminal (31) and a rear terminal (32); The wire end piece (1) is provided with a plurality of first slots (11) of different sizes, the plurality of front terminals (31) are respectively placed in the plurality of first slots (11), a locking structure (12) is provided inside the first slots (11), and the locking structure (12) is used to lock the front terminals (31) inserted into the first slots (11); A locking groove (13) is provided on one side of the middle of the wire end piece (1), and a locking piece (4) is detachably provided in the locking groove (13). The locking piece (4) is used to secondary lock the front terminal (31) inserted into the first slot (11) when moving toward the middle of the wire end piece (1).

2. A connector with internal multi-stage locking according to claim 1, characterized in that: A clamping groove (311) is provided on one side of the front terminal (31) close to the locking structure, and the clamping groove (311) is used to accommodate the locking structure (12) so that the front terminal (31) is locked in the first slot (11).

3. A connector with internal multi-stage locking according to claim 2, characterized in that: The locking structure (12) comprises an elastic portion (121) and a buckle portion (122), the top end of the elastic portion (121) is connected to the inner wall of the first slot hole (11), the initial position of the end of the elastic portion (121) has a certain gap with the inner wall of the first slot hole (11), and the buckle portion (122) is arranged on a side of the end of the elastic portion (121) away from the inner wall of the first slot hole (11); When the front terminal (31) is inserted into the first slot (11), the elastic portion (121) is pressed by the front terminal (31) and is compressed toward the inner wall of the first slot (11); When the front terminal (31) is inserted into the snap-fit ​​groove (311) and approaches the snap-fit ​​portion (122), the elastic portion (121) rebounds in a direction approaching the front terminal (31), and the snap-fit ​​portion (122) snaps into the snap-fit ​​groove (311) of the front terminal (31), so that the front terminal (31) is locked in the first slot hole (11).

4. A connector with internal multi-stage locking according to claim 1, characterized in that: A plurality of through slots (41) are provided at positions of the locking member (4) corresponding to the first slotted hole (11); the through slots (41) include a receiving portion (411) and a locking portion (412) that are connected to each other; the locking portion (412) is located on a side of the receiving portion (411) away from the middle of the wire end member (1); and the cross section of the locking portion (412) is smaller than that of the receiving portion (411); When the locking member (4) is located at the initial position, the front terminal (31) is located in the accommodating portion (411); When the locking piece (4) moves toward the middle of the wire end piece (1), the front terminal (31) is snapped into the locking portion (412), so that the front terminal (31) is locked in the first slot (11).

5. A connector with internal multi-stage locking according to claim 2, characterized in that: Limiting protrusions (312) are provided on both sides of the clamping groove (311), and two limiting grooves (14) are provided on the inner wall of the first slot hole (11) close to the limiting protrusions (312), and the limiting grooves (14) are used to accommodate the limiting protrusions (312).

6. A connector with internal multi-stage locking according to claim 1, characterized in that: The plate end piece (2) is provided with a plurality of second slot holes (21) of different sizes, the second slot holes (21) correspond to the first slot holes (11) in position one by one, and the plurality of rear terminals (32) are respectively placed in the plurality of second slot holes (21); A first sinking structure (22) is provided at the top edge of the second slot hole (21).

7. A connector with internal multi-stage locking according to claim 6, characterized in that: A second sinking groove structure (23) is further provided inside the first sinking groove structure (22) of the second slot hole (21).

8. A connector with internal multi-stage locking according to any one of claims 1 to 7, characterized in that: The outer wall of the wire end piece (1) is provided with a plurality of guide columns (15), and the inner wall of the plate end piece (2) is provided with a plurality of guide grooves (24); The guide groove (24) is used to accommodate the guide column (15) so that the wire end piece (1) can be inserted into the interior of the plate end piece (2).

9. A connector with internal multi-stage locking according to claim 8, characterized in that: The outer wall of the wire end piece (1) is also provided with a plurality of fixing blocks (16), and the inner wall of the plate end piece (2) is provided with a plurality of fixing grooves (25); The fixing groove (25) is used to accommodate the fixing block (16) so that the wire end piece (1) and the plate end piece (2) are snap-fitted.

10. A connector with internal multi-stage locking according to any one of claims 1 to 7, characterized in that: The first slots (11) of different sizes are staggered in distribution.

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