High-vibration-resistance connector with secondary lock structure

Abstract

The utility model discloses a high vibration resistance connector with a secondary lock structure. According to the technical scheme, the connector comprises a male end module and a female end module, a primary lock structure and a secondary lock structure are arranged between a female terminal and a female end plastic shell, and the primary lock structure comprises a locking hole formed in the bottom of the female terminal and a primary lock elastic piece arranged in a terminal hole of the female end plastic shell. The primary locking elastic piece comprises a limiting protrusion capable of extending into the locking hole. The secondary lock structure comprises a secondary lock hole transversely formed in the middle of the female end plastic shell and a strip-shaped buckle which is inserted into the secondary lock hole and can be clamped with the female end plastic shell, and the strip-shaped buckle abuts against all the female terminals in the female end plastic shell and limits and fixes all the female terminals; the female terminal is also provided with a double-elastic-sheet contact pressing structure. The scheme provided by the utility model is convenient to disassemble and assemble, firm in connection and vibration-resistant.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a connector with a secondary locking structure. Background Technology

[0002] In existing piercing terminal connectors, the female terminal and the female housing are typically secured using multiple locking structures, such as the three-locking structure manufactured by TE. This structure is cumbersome and difficult to disassemble; after disassembly, the female housing cannot be reused, and the female terminal lacks sufficient vibration resistance, leaving room for improvement. Therefore, the purpose of this invention is to provide a connector that is easy to assemble and disassemble, provides a secure connection, and exhibits high vibration resistance. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the main purpose of this utility model is to provide a connector that is easy to assemble and disassemble, has a firm connection and high vibration resistance.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a high vibration-resistant connector with a secondary locking structure, comprising a male terminal module and a female terminal module. The male terminal module includes a male terminal housing and multiple male terminals fixedly disposed within the male terminal housing. The female terminal module includes a female terminal housing and multiple female terminals fixedly disposed within the female terminal housing. The multiple female terminals are crimped to an FPC. A press-locking buckle is provided on the female terminal housing, and a locking groove that mates with the press-locking buckle is provided on the male terminal housing. A primary locking structure and a secondary locking structure are provided between the female terminals and the female terminal housing. The primary locking structure includes a locking hole at the bottom of the female terminal and a terminal hole in the female terminal housing. A primary locking spring includes a limiting protrusion that can extend into a locking hole; a secondary locking structure includes a secondary locking hole laterally disposed in the middle of the female end plastic shell and a strip-shaped buckle inserted into the secondary locking hole and capable of engaging with the female end plastic shell, the strip-shaped buckle abutting against all female terminals in the female end plastic shell and limiting and fixing all female terminals; the female terminal is also provided with a double spring contact structure, the double spring contact structure including a female end main spring and a female end auxiliary spring disposed above the female end main spring, the bent surface of the female end main spring abutting against the male terminal, the end of the female end auxiliary spring being inclined toward the female end main spring, and the female end main spring abutting against the end of the female end auxiliary spring when the female end main spring is pushed up by force.

[0005] Preferably, the tail of the strip buckle is provided with a buckle sub-lock with a protruding structure, and the female end plastic shell is provided with a limiting end that engages with the buckle sub-lock at the tail of the secondary lock hole.

[0006] Preferably, the head of the strip buckle is provided with a buckle main lock, and the female end plastic shell is provided with a limiting hole at the head of the secondary lock hole for the buckle main lock to be inserted.

[0007] Preferably, the strip buckle is provided with a clearance groove for avoiding the pressing lock stop.

[0008] Preferably, the tail end of the female terminal is provided with a plurality of crimping wings that are connected to the FPC.

[0009] Preferably, the male end plastic shell is provided with a plurality of plastic shell reference surfaces that are flush with the head surface of the male end.

[0010] Preferably, the bottom of the male end plastic shell is provided with a grid for isolating adjacent male ends.

[0011] Preferably, the bottom of the male end plastic shell is provided with several rectangular flatness measuring surfaces.

[0012] Preferably, the male terminal has a protrusion on the side that contacts the terminal hole, two stepped barbs that insert into the terminal hole on the male terminal, and a dovetail-shaped riveting surface at the tail of the male terminal.

[0013] Preferably, the female end plastic shell is provided with a plurality of connecting protrusions that interfere with the male end plastic shell.

[0014] Compared with the prior art, the present invention has the following advantages: the female terminal in this solution is fixed by a primary locking structure and a secondary locking structure. The primary locking structure and the secondary locking structure are easy to disassemble, so that the female terminal plastic shell can be reused. Compared with the prior art, which requires the female terminal plastic shell to be discarded and cannot be reused, this is more environmentally friendly and reduces costs.

[0015] The female terminal ensures structural stability through a primary locking structure and a secondary locking structure, while also providing a foundation for its high vibration resistance. The dual-spring contact structure includes a main female spring and a secondary female spring positioned above it. The bent surface of the main female spring abuts against the male terminal, and the end of the secondary female spring is inclined toward the main female spring. When the main female spring is pushed up by the male terminal, it abuts against the end of the secondary female spring. The secondary female spring provides additional downward pressure to the main female spring, ensuring the reliability of the connection with the male terminal. The bent surface of the main female spring is the stress point, and its low surface roughness further ensures the reliability of the electrical connection under high vibration. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a high vibration-resistant connector with a secondary locking structure according to the present invention;

[0017] Figure 2 This is a front view of a high vibration-resistant connector with a secondary locking structure according to the present invention;

[0018] Figure 3 for Figure 2 Cross-sectional view of section AA;

[0019] Figure 4 for Figure 3 Enlarged structural diagram of section A in the middle;

[0020] Figure 5 This is a schematic diagram of the structure of the female terminal of this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the female module of this utility model. Figure 1 ;

[0022] Figure 7 This is a schematic diagram of the structure of the female module of this utility model. Figure 2 ;

[0023] Figure 8 This is a front view of the female end module of this utility model;

[0024] Figure 9 for Figure 8 Cross-sectional view of section AA;

[0025] Figure 10 for Figure 9 Enlarged structural diagram of section A in the middle;

[0026] Figure 11 for Figure 8 Cross-sectional view of section BB;

[0027] Figure 12 for Figure 11 Enlarged structural diagram of section A in the middle;

[0028] Figure 13 This is a schematic diagram of the structure of the strip buckle of this utility model;

[0029] Figure 14 This is a schematic diagram of the structure of the male terminal module of this utility model. Figure 1 ;

[0030] Figure 15 This is a schematic diagram of the structure of the male terminal module of this utility model. Figure 2 (PCB board omitted);

[0031] Figure 16 This is a schematic diagram of the male terminal of this utility model.

[0032] In the diagram: 1. Male end module; 11. Male end plastic shell; 111. Plastic shell reference surface; 112. Grid; 113. Rectangular flatness measurement surface; 12. Male terminal; 121. Protrusion; 122. Stepped barb; 123. Dovetail-shaped riveting surface; 13. Locking groove; 2. Female end module; 21. Female end plastic shell; 22. Female terminal; 23. FPC; 24. Press-lock buckle; 25. Locking hole; 26. Primary locking spring; 27. Limiting protrusion; 28. Secondary locking hole; 29. ​​Strip buckle; 210. Female end main spring; 211. Female end auxiliary spring; 212. Buckle auxiliary lock; 213. Limiting end; 214. Buckle main lock; 215. Limiting hole; 216. Clearance groove; 217. Press-fit wing; 218. Connecting protrusion. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings.

[0034] like Figure 1 As shown, a high vibration-resistant connector with a secondary locking structure includes a male terminal module 1 and a female terminal module 2. The male terminal module 1 includes a male terminal housing 11 and a plurality of male terminals 12 fixedly disposed within the male terminal housing 11. The female terminal module 2 includes a female terminal housing 21 and a plurality of female terminals 22 fixedly disposed within the female terminal housing 21. The plurality of female terminals 22 are crimped to an FPC 23. A press-locking buckle 24 is provided on the female terminal housing 21, and a locking groove 13 that mates with the press-locking buckle 24 is provided on the male terminal housing 11. A primary locking structure and a secondary locking structure are provided between the female terminals 22 and the female terminal housing 21. The primary locking structure includes a locking hole 25 disposed at the bottom of the female terminal 22 and a primary locking spring piece 26 disposed in the terminal hole of the female terminal housing 21. The primary locking spring piece 26 covers... The system includes a limiting protrusion 27 that can extend into the locking hole 25; the secondary locking structure includes a secondary locking hole 28 horizontally disposed in the middle of the female end plastic shell 21 and a strip buckle 29 inserted into the secondary locking hole 28 and capable of engaging with the female end plastic shell 21. The strip buckle 29 abuts against all female terminals 22 in the female end plastic shell 21 and limits and fixes all female terminals 22; the female terminal 22 is also provided with a double spring contact structure. The double spring contact structure includes a female end main spring 210 and a female end auxiliary spring 211 disposed above the female end main spring 210. The bent surface of the female end main spring 210 abuts against the male terminal 12. The end of the female end auxiliary spring 211 is inclined toward the female end main spring 210. When the female end main spring 210 is pushed up by force, it abuts against the end of the female end auxiliary spring 211.

[0035] This solution provides a high vibration-resistant connector with a secondary locking structure. The single locking structure formed by the pressing locking buckle 24 and the locking groove 13 facilitates insertion and removal while ensuring reliability. During installation, when the female end plastic shell 21 is inserted into the male end plastic shell 11, pressing down on the pressing locking buckle 24 allows it to enter the locking groove 13 and achieve locking. During disassembly, simply pressing down on the pressing locking buckle 24 again allows it to disengage from the locking groove 13, thus separating the male end module 1 from the female end module 2.

[0036] In this design, a primary locking structure and a secondary locking structure are provided between the female terminal 22 and the female end plastic shell 21. The primary locking structure initially fixes the female terminal 22 by engaging the primary locking spring 26 with the locking hole 25 in the female terminal 22. During disassembly, a commonly used jig is inserted into the terminal hole to press down the primary locking spring 26, allowing the female terminal 22 to be removed. All female terminals 22 are securely fixed by the secondary locking structure. Specifically, the secondary locking hole 28 in the middle of the female end plastic shell 21 and a strip-shaped buckle 29 inserted into the secondary locking hole 28 and engaging with the female end plastic shell 21 are used for fixation. The strip-shaped buckle 29 abuts against and fixes the female terminal 22, and the buckle 29 is fixed to the female end plastic shell 21 using a snap-fit ​​structure, making disassembly relatively easy. In this solution, the female terminal 22 is fixed by a primary locking structure and a secondary locking structure. The primary locking structure and the secondary locking structure are easy to disassemble, so that the female terminal plastic shell 21 can be reused. Compared with the existing technology, which requires the female terminal plastic shell 21 to be discarded and cannot be reused, this solution is more environmentally friendly and reduces costs.

[0037] The female terminal 22 ensures structural stability through a primary locking structure and a secondary locking structure, while also providing a foundation for its high vibration resistance. The dual-spring contact structure includes a female main spring 210 and a female auxiliary spring 211 positioned above the female main spring 210. The bent surface of the female main spring 210 abuts against the male terminal 12, and the end of the female auxiliary spring 211 is inclined toward the female main spring 210. When the female main spring 210 is pushed up by the male terminal 12, it abuts against the end of the female auxiliary spring 211. The female auxiliary spring 211 provides additional downward pressure to the female main spring 210, ensuring the reliability of the connection with the male terminal 12. The bent surface of the female main spring 210 is the stress point, and the process is a rolled surface with low roughness, further ensuring the reliability of the electrical connection under high vibration.

[0038] Preferably, the tail of the strip buckle 29 is provided with a buckle sub-lock 212 with a protruding structure, and the female end plastic shell 21 is provided with a limiting end 213 at the tail of the secondary lock hole 28 that engages with the buckle sub-lock 212.

[0039] Preferably, the head of the strip buckle 29 is provided with a buckle main lock 214, and the female end plastic shell 21 is provided with a limiting hole 215 at the head of the secondary lock hole 28 for the buckle main lock 214 to be inserted.

[0040] See attached document Figures 5 to 9 Both ends of the strip buckle 29 are connected to the female end plastic shell 21 by a limiting structure. The buckle is connected to the limiting end 213 by the buckle secondary lock 212. When disassembling, use the disassembly jig to press the two buckle main locks 214, and then push the tail of the strip buckle 29 inward. The buckle secondary lock 212 and buckle main lock 214 can then be disengaged from the limiting end 213 and the limiting hole 215. The strip buckle 29 can then be pulled out from the secondary lock hole 28. It is easy to disassemble and can be reused.

[0041] Preferably, the strip buckle 29 is provided with a relief groove 216 for avoiding the pressing lock buckle 24.

[0042] Preferably, the tail of the female terminal 22 is provided with a plurality of crimping wings 217 that are connected to the FPC 23.

[0043] The crimping connection between the crimping wing 217 and the FPC23 fully ensures the connection stability between the female terminal 22 and the FPC23.

[0044] Preferably, the male end plastic shell 11 is provided with a plurality of plastic shell reference surfaces 111 that are flush with the head surface of the male end 12. The plastic shell reference surfaces 111 provide reference lines for the automatic machine CCD to accurately measure the positional data of the head of the male end 12.

[0045] Preferably, the bottom of the male terminal housing 11 is provided with a grid 112 for isolating adjacent male terminals 12. The grid 112 is used to isolate adjacent male terminals 12 and increase the creepage distance.

[0046] Preferably, the bottom of the male end plastic shell 11 is provided with a plurality of rectangular flatness measuring surfaces 113. The rectangular flatness measuring surfaces 113 are used to accurately measure the deformation of the bottom plane of the male end plastic shell 11.

[0047] Preferably, the male terminal 12 has a protrusion 121 on the side that contacts the terminal hole, two stepped barbs 122 that insert into the terminal hole, and a dovetail-shaped riveting surface 123 at the tail end. The protrusion 121 is used for assembly positioning and increases holding force, the stepped barbs 122 also increase terminal holding force, and the dovetail-shaped riveting surface 123 increases the riveting force area and improves riveting reliability.

[0048] Preferably, the female end plastic shell 21 is provided with a plurality of connecting protrusions 218 that interfere with the male end plastic shell 11. The connecting protrusions 218 cause slight interference between the male end plastic shell 11 and the female end plastic shell 21, which is used to offset the assembly gap and improve vibration resistance.

[0049] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A high vibration-resistant connector with a secondary locking structure, comprising a male terminal module and a female terminal module, wherein the male terminal module includes a male terminal housing and a plurality of male terminals fixedly disposed within the male terminal housing, and the female terminal module includes a female terminal housing and a plurality of female terminals fixedly disposed within the female terminal housing, wherein the plurality of female terminals are crimped to an FPC, the female terminal housing is provided with a press-locking buckle, and the male terminal housing is provided with a locking groove that mates with the press-locking buckle, characterized in that: A primary locking structure and a secondary locking structure are provided between the female terminal and the female end shell. The primary locking structure includes a locking hole at the bottom of the female terminal and a primary locking spring in the terminal hole of the female end shell. The primary locking spring includes a limiting protrusion that can extend into the locking hole. The secondary locking structure includes a secondary locking hole horizontally located in the middle of the female end shell and a strip-shaped buckle inserted into the secondary locking hole and capable of engaging with the female end shell. The strip-shaped buckle abuts against all female terminals in the female end shell and limits and fixes all female terminals. A double spring contact structure is also provided on the female terminal. The double spring contact structure includes a female end main spring and a female end auxiliary spring located above the female end main spring. The bent surface of the female end main spring abuts against the male terminal. The end of the female end auxiliary spring is inclined toward the female end main spring. When the female end main spring is pushed up by force, it abuts against the end of the female end auxiliary spring.

2. The high vibration-resistant connector with a secondary locking structure according to claim 1, characterized in that: The tail of the strip buckle is provided with a buckle sub-lock with a protruding structure, and the female end plastic shell is provided with a limiting end that engages with the buckle sub-lock at the tail of the secondary lock hole.

3. A high vibration-resistant connector with a secondary locking structure according to claim 1 or 2, characterized in that: The head of the strip buckle is provided with a buckle main lock, and the female end plastic shell is provided with a limiting hole at the head of the secondary lock hole for the buckle main lock to be inserted.

4. A high vibration-resistant connector with a secondary locking structure according to claim 1, characterized in that: The bar buckle is provided with a clearance groove for avoiding the pressing lock buckle.

5. A high vibration-resistant connector with a secondary locking structure according to claim 1, characterized in that: The female terminal is provided with several crimping wings that connect to the FPC at its tail.

6. A high vibration-resistant connector with a secondary locking structure according to claim 1, characterized in that: The male end plastic shell has multiple plastic shell reference surfaces that are flush with the head surface of the male end.

7. A high vibration-resistant connector with a secondary locking structure according to claim 1, characterized in that: The bottom of the male end plastic shell is provided with a grid for isolating adjacent male ends.

8. A high vibration-resistant connector with a secondary locking structure according to claim 1, characterized in that: The bottom of the male end plastic shell is provided with several rectangular flatness measurement surfaces.

9. A high vibration-resistant connector with a secondary locking structure according to claim 1, characterized in that: The male terminal has a raised bump on the side that contacts the terminal hole, and two stepped barbs that insert into the terminal hole are provided on the male terminal. The tail of the male terminal has a dovetail-shaped riveting surface.

10. A high vibration-resistant connector with a secondary locking structure according to claim 1, characterized in that: The female end plastic shell is provided with multiple connecting protrusions that interfere with the male end plastic shell.

Images