A snap-lock connector

Abstract

The utility model relates to electric appliance technical field, especially a lock catch formula connector. The connector includes plastic main part, is provided with a plurality of terminal slot and with a plurality of terminal slot intercommunication's installation slot on plastic main part, a plurality of terminal slot all install the terminal, install the plastic lock catch in the installation slot, the plastic lock catch includes roof and bottom plate, and the roof is connected with the bottom plate through a plurality of interval setting's baffle, and the both ends of roof are provided with mounting plate respectively, and the lower end of mounting plate and the end of bottom plate have the gap between, and the terminal hole corresponding with terminal slot is formed between mounting plate and baffle and adjacent baffle, and the outside of mounting plate is provided with buckle, and the plastic lock catch is clamped in the installation slot through buckle, and the side of roof and bottom plate is provided with the blocking piece, and the outside of blocking piece contacts with the terminal. The utility model lock catch can form secondary lock to the terminal, and the gap of lock catch mounting plate and bottom plate provides the buffer space for the installation of lock catch, so that the lock catch is not easy to break damage.

Description

Technical Field

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

[0002] As electronic devices evolve towards miniaturization, high density, and high-speed transmission, connectors, as core components for signal and power transmission, are crucial for structural stability and reliability. In existing technologies, connectors commonly employ a terminal hook-locking structure. This spring-loaded hook design suffers from low holding force and inability to withstand greater external forces. Especially under 90-degree bending stress after assembly, it is prone to pin retraction (terminal ejection), affecting the stability and safety of the electrical connection. Furthermore, this design also results in a large terminal cutout area and poor current-carrying capacity.

[0003] Chinese Patent Application No. 202323412041.5 discloses a detachable wire-end connector and its locking mechanism. The wire-end connector includes a sheath body and a locking mechanism assembled within the sheath body. The locking mechanism includes a base plate and locking blocks disposed on the base plate. Each locking block has symmetrically arranged latches on opposite sides. The sheath body has a mounting groove for assembling the locking mechanism. The inner walls of both sides of the mounting groove have symmetrically arranged latching platforms for engaging with the latches. The distance between two symmetrical latching platforms is less than the length of the base plate. Each latching platform consists of a first latching platform and a second latching platform. The latches engage with the first or second latching platform to complete either primary or secondary locking of the wire-end connector. In the primary locking state, the latching platform separates from the base plate to accommodate the terminal; in the secondary locking state, the latching platform abuts against the base plate to secure the terminal. This connector has a simple structure and does not require tools during terminal locking or unlocking, improving work efficiency and ensuring the connector's service life. However, its locking component is an integrated design consisting of a base plate, locking block, and latches. The latches are located on both sides of the locking block and make direct, rigid contact with the locking platform of the sheath body, lacking elastic buffer space. During locking or unlocking, rigid deformation is required to complete the engagement. Under stress, the stress is concentrated at the root of the latches. After long-term use, material fatigue can easily lead to latch breakage or deformation, reducing locking reliability and affecting the stability and safety of the electrical connection. In addition, the structure design of the positioning block on the upper inner wall of the terminal hole forming an obtuse angle with the upper inner wall of the terminal hole is relatively complex, which also increases the manufacturing cost of the locking component. Utility Model Content

[0004] The purpose of this invention is to address the technical problems of existing connector locking components lacking elastic buffer space, which leads to the risk of buckle breakage or deformation after long-term use, and the relatively complex locking component structure design, increasing manufacturing costs. This invention provides a locking connector that adds plastic buckles to the plastic body to form a secondary locking structure, allowing for secondary fixation after terminal assembly. The gap design between the mounting parts at both ends of the plastic buckle and the base plate provides buffer space for buckle installation, making the buckle structure less prone to breakage and damage, thereby increasing the buckle's service life.

[0005] The technical solution adopted by this utility model to achieve the above objectives is as follows: a locking connector, comprising a plastic body, terminals, and plastic latches. The plastic body is provided with multiple terminal slots and mounting slots communicating with the multiple terminal slots. Terminals are installed in the multiple terminal slots, and plastic latches are installed in the mounting slots. The plastic latches include a top plate, partitions, a bottom plate, and a mounting plate. The top plate is connected to the bottom plate through multiple spaced partitions. Mounting plates are respectively provided at both ends of the top plate, and there is a gap between the lower end of the mounting plate and the end of the bottom plate. Terminal holes corresponding to the terminal slots are formed between the mounting plate and the partitions and between adjacent partitions. A snap fastener is provided on the outer side of the mounting plate, and the plastic latches are snapped into the mounting slots by the snap fasteners. A blocking block is provided on one side of both the top plate and the bottom plate, and the outer side of the blocking block is in contact with the terminal.

[0006] Furthermore, the inner side of the blocking block has an inclined surface, which is inclined from top to bottom outwards.

[0007] Furthermore, one side of the top plate extends outward to form multiple spaced overlapping plates, all of which are located on one side of the blocking block, and the plastic body is provided with overlapping grooves that cooperate with the overlapping plates.

[0008] Furthermore, the plastic body has a slot that mates with the buckle, the slot is provided through the side wall of the plastic body and is connected to the mounting groove.

[0009] Furthermore, the terminal includes a tubing clamping part, a wire clamping part, a limiting part, and a connecting part connected in sequence. The bottom of the tubing clamping part and the wire clamping part are both arc-shaped structures, and the included angle between the two arms of the tubing clamping part is greater than the included angle between the two arms of the wire clamping part. The limiting part is in contact with the blocking block, and the two sides of the connecting part are respectively provided with protrusions. The terminal is installed in the terminal slot through the protrusions.

[0010] Furthermore, the terminal slot is provided with a groove that mates with the protrusion.

[0011] Furthermore, the terminal slot is provided with a limiting slot that cooperates with the limiting part.

[0012] Furthermore, the rear end of the plastic body extends integrally with two rows of upper and lower plug-in portions, and the rear ends of the plurality of terminal slots extend to the plug-in portions one by one and penetrate the rear end of the plug-in portions.

[0013] Furthermore, a first anti-foolproof slope is provided on one side of the upper end of a pair of corresponding plug-in parts in the upper and lower rows, and a second anti-foolproof slope is provided on one side of the upper end of the remaining plug-in parts in the upper row and some plug-in parts in the lower row. The second anti-foolproof slope is arranged in the opposite direction to the first anti-foolproof slope.

[0014] Furthermore, in the upper and lower rows of plug-in parts, two adjacent plug-in parts at both ends of the upper row are connected to form an integral plug-in structure. The upper end of the integral plug-in structure is symmetrically provided with a third anti-foolproof slope, the upper end of the remaining plug-in parts in the upper row is symmetrically provided with a fourth anti-foolproof slope, and the lower end of all plug-in parts in the lower row is symmetrically provided with a fifth anti-foolproof slope.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] (1) This utility model provides a locking connector. By adding a plastic locking buckle to the plastic body, a secondary locking structure is formed, which fixes the terminals after assembly. At the same time, the gap design between the mounting plate and the base plate at both ends of the plastic locking buckle provides a buffer space for the installation and disassembly of the locking buckle, making the locking buckle structure less prone to breakage and damage, thereby increasing the service life of the locking buckle. In addition, the locking buckle can lock multiple terminals in the terminal slot at the same time through the upper and lower blocking blocks, and restricts the backward movement of the terminals in the direction of insertion of the male end of the connector through physical contact, thereby enhancing the stability and reliability of the connection. Its structure is simple and practical. At the same time, the structure of this connector is suitable for various terminal spacings and is flexible in application.

[0017] (2) The present invention provides a locking connector in which the terminals are locked and fixed for the first time by the cooperation of the protrusions at both ends with the grooves in the plastic body. While ensuring the stability of the terminals, the terminal design is optimized, thereby reducing the hollow part of the terminals, improving the mechanical strength and electrical performance of the terminals, and improving the overload current capacity of the connector.

[0018] (3) The present invention provides a locking connector, which uses a snap-fit ​​structure to achieve quick snap-fit ​​between the snap-fit ​​and the plastic body, which not only ensures the convenience of assembly, but also facilitates subsequent maintenance and replacement.

[0019] (4) The present invention provides a locking connector in which the plastic locking overlap plate and the plastic body overlap groove are matched to facilitate the installation of the plastic locking and thus improve the installation accuracy. Attached Figure Description

[0020] Figure 1This is the structure of a locking connector according to Embodiment 1 of the present invention. Figure 1 .

[0021] Figure 2 This is the structure of a locking connector according to Embodiment 1 of the present invention. Figure 2 .

[0022] Figure 3 This is an exploded view of the structure of a locking connector according to this utility model.

[0023] Figure 4 This is a cross-sectional view of the structure of a locking connector with terminals installed in a terminal slot according to this utility model.

[0024] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0025] Figure 6 This utility model relates to the structure of a locking type connector plastic locking buckle. Figure 1 .

[0026] Figure 7 This utility model relates to the structure of a locking type connector plastic locking buckle. Figure 2 .

[0027] Figure 8 This is a front view of the structure of a plastic locking buckle for a locking connector according to this utility model.

[0028] Figure 9 This is a structural diagram of a second embodiment of the locking connector of this utility model.

[0029] Figure 10 This is a cross-sectional view of the structure of the plastic locking buckle of the locking connector of this utility model in the pre-locking position.

[0030] Figure 11 This is a cross-sectional view of the plastic locking buckle of a locking connector of this utility model in the locking position.

[0031] In the diagram: 1. Plastic body, 11. Terminal slot, 111. Limiting slot, 112. Groove, 12. Mounting slot, 13. Slot, 14. Overlap slot, 15. Plug-in part, 151. First anti-foolproof slope, 152. Second anti-foolproof slope, 153. Third anti-foolproof slope, 154. Fourth anti-foolproof slope, 155. Fifth anti-foolproof slope, 2. Terminal, 21. Tube clamping part, 22. Wire clamping part, 23. Limiting part, 24. Connecting part, 241. Protrusion, 3. Plastic latch, 31. Top plate, 32. Partition plate, 33. Bottom plate, 34. Mounting plate, 35. Snap-in, 36. Terminal hole, 37. Blocking block, 371. Inclined surface, 38. Overlap plate, 4. Wire. Detailed Implementation

[0032] The present invention will now be described in detail with reference to the accompanying drawings and embodiments, but the present invention is not limited to the specific embodiments.

[0033] Example 1

[0034] like Figure 1-5 The latching connector shown includes a plastic body 1, terminals 2 and plastic latches 3. The plastic body 1 is provided with multiple terminal slots 11 and mounting slots 12 that communicate with the multiple terminal slots 11. Terminals 2 are installed in each of the multiple terminal slots 11, and plastic latches 3 are installed in the mounting slots 12.

[0035] Terminal 2 includes a tubing clamping part 21, a wire clamping part 22, a limiting part 23, and a connecting part 24 connected in sequence. The bottoms of the tubing clamping part 21 and the wire clamping part 22 are both arc-shaped structures, and the included angle between the two arms of the tubing clamping part 21 is greater than the included angle between the two arms of the wire clamping part 22. The limiting part 23 is used to contact the plastic latch 3. A limiting groove 111 that cooperates with the limiting part 23 is provided in the terminal groove 11. Protrusions 241 are provided on both sides of the connecting part 24. Terminal 2 passes through the protrusions 241. 41 is installed in the terminal slot 11, and the terminal slot 11 is provided with a groove 112 that mates with the protrusion 241. When the terminal 2 is inserted into place, its protrusion 241 abuts against the side of the groove 112, thereby achieving the first locking of the terminal 2. Compared with the traditional spring-type barbed fixing structure, the protrusion mounting structure optimizes the terminal design while ensuring the stability of the terminal, thereby reducing the hollow part of the terminal, improving the mechanical strength and electrical performance of the terminal, and improving the overload current capacity of the connector.

[0036] like Figure 6-8As shown, the plastic latch 3 includes a top plate 31, a partition plate 32, a bottom plate 33, and a mounting plate 34. The top plate 31 is connected to the bottom plate 33 through a plurality of spaced partition plates 32. Mounting plates 34 are respectively provided at both ends of the top plate 31, and there is a gap between the lower end of the mounting plate 34 and the end of the bottom plate 33. Terminal holes 36 corresponding to the terminal slots 11 are formed between the mounting plate 34 and the partition plates 32, as well as between adjacent partition plates 32. A buckle 35 is provided on the outer side of the mounting plate 34, and the plastic latch 3 is snapped into the mounting slot 12 by the buckle 35. A slot 13 is provided on the plastic body 1 to cooperate with the buckle 35, and the slot 13 penetrates the plastic body. The main body 1 has a side wall that is connected to the mounting groove 12. The design of the slot 13 facilitates the installation and disassembly of the plastic buckle 3. The buckle structure enables the buckle to be quickly engaged with the plastic body 1, which not only ensures the ease of assembly but also facilitates subsequent maintenance and replacement. One side of the top plate 31 and the bottom plate 33 is integrally formed with a blocking block 37 for blocking the terminal 2. The outer side of the blocking block 37 contacts the limiting part 23 of the terminal 2. The inner side of the blocking block 37 has an inclined surface 371. The inclined surface 371 is inclined from top to bottom and outward. The inclined surface 371 can avoid the wire 4, thereby preventing it from interfering with the wire 4.

[0037] Preferably, one side of the top plate 31 extends outward to form a plurality of spaced overlapping plates 38, all of which are located on one side of the blocking block 37. The plastic body 1 is provided with overlapping grooves 14 that cooperate with the overlapping plates 38. The cooperation between the overlapping plates 38 and the overlapping grooves 14 facilitates the installation of the plastic buckle 3, thereby improving the installation accuracy.

[0038] like Figure 2 As shown, the rear end of the plastic body 1 extends integrally with two rows of upper and lower plug-in portions 15. The rear ends of multiple terminal slots 11 extend to the plug-in portions 15 one by one and pass through the rear end of the plug-in portions 15. A first anti-foolproof slope 151 is provided on the upper side of one of the upper and lower corresponding sets of plug-in portions 15 in the two rows of plug-in portions 15. A second anti-foolproof slope 152 is provided on the upper side of the remaining plug-in portions 15 in the upper row and some plug-in portions 15 in the lower row. The second anti-foolproof slope 152 is arranged in the opposite direction to the first anti-foolproof slope 151.

[0039] Preferably, the spacing between two adjacent terminals 2 in each row of terminals 2 is 2.5mm, 3.0mm, 3.5mm, 4.2mm or 5.08mm.

[0040] Example 2

[0041] The locking connector in this embodiment is basically the same as that in Embodiment 1, such as... Figure 9As shown, the difference is that the two adjacent plug-in parts 15 at both ends of the upper row are connected as an integral plug-in structure. The upper end of the integral plug-in structure is symmetrically provided with a third anti-foolproof slope 153. The upper ends of the remaining plug-in parts 15 in the upper row are symmetrically provided with a fourth anti-foolproof slope 154. The lower ends of all plug-in parts 15 in the lower row are symmetrically provided with a fifth anti-foolproof slope 155.

[0042] During assembly of this connector: First, the terminal 2 is riveted to the wire 4, with the front end of the wire inside the wire 4 protruding outside the tubing. The front end of the wire is fixed by the wire clamping part 22, so that the wire and the terminal 2 are electrically connected. The tubing is then fixed by the tubing clamping part 21. Then, the plastic locking buckle 3 is inserted into the mounting groove 12 of the plastic body 1, and the plastic locking buckle 3 is positioned as follows: Figure 10 As shown in the pre-locking position, during the insertion of the plastic buckle 3 into the plastic body 1, the mounting plates 34 at both ends retract inward under force. When the buckle 35 is inserted into the slot 13 of the plastic body 1, the mounting plate 34 returns to its original position, and the buckle 35 is engaged at the upper edge of the slot 13. Then, the terminal 2 with the riveted wire 4 is inserted into the terminal slot 11 from the front end of the plastic body 1. After the terminal 2 is inserted into place, the protrusion 241 on the terminal 2 abuts against the side wall of the groove 112, thereby preventing the terminal 2 from falling out and achieving the first locking of the terminal 2. Finally, the plastic buckle 3 is pressed down to position it as shown in the figure. Figure 11 In the locking position shown, the upper and lower blocking blocks 37 of the plastic latch 3 abut against the limiting parts 23 of the upper and lower rows of terminals 2 respectively to form a stop cooperation, which prevents the terminals 2 from falling off when subjected to excessive force, thereby achieving the purpose of locking the terminals 2 a second time.

[0043] This utility model discloses a locking connector. By adding a plastic locking clip to the plastic body, a secondary locking structure is formed, which provides secondary fixation after terminal assembly. At the same time, the gap design between the mounting plate and the base plate at both ends of the plastic locking clip provides buffer space for the installation and disassembly of the locking clip, making the locking structure less prone to breakage and damage, thereby increasing the service life of the locking clip. In addition, the locking clip can lock multiple terminals simultaneously in the terminal slot through two upper and lower blocking blocks, and restricts the backward movement of the terminals in the insertion direction of the connector male end through physical contact, thereby enhancing the stability and reliability of the connection. Its structure is simple, practical, and suitable for various terminal spacings, making it flexible in application.

[0044] The above description, in conjunction with preferred technical solutions, provides a further detailed explanation of this utility model. It should not be construed that the specific implementation of the utility model is limited to these descriptions. For those skilled in the art, simple deductions and substitutions can be made without departing from the concept of this utility model, and all such modifications and substitutions should be considered within the scope of protection of this utility model.

Claims

1. A locking connector, characterized in that: The device includes a plastic body, terminals, and plastic latches. The plastic body has multiple terminal slots and mounting slots connected to the terminal slots. Terminals are installed in each of the terminal slots, and plastic latches are installed in the mounting slots. The plastic latches include a top plate, partitions, a bottom plate, and a mounting plate. The top plate is connected to the bottom plate through multiple spaced partitions. Mounting plates are respectively provided at both ends of the top plate, and there is a gap between the lower end of the mounting plate and the end of the bottom plate. Terminal holes corresponding to the terminal slots are formed between the mounting plate and the partitions, as well as between adjacent partitions. A snap fastener is provided on the outer side of the mounting plate, and the plastic latches are snapped into the mounting slots by the snap fasteners. A blocking block is provided on one side of both the top plate and the bottom plate, and the outer side of the blocking block is in contact with the terminal.

2. The locking connector according to claim 1, characterized in that: The inner side of the blocking block has an inclined surface, which is inclined from top to bottom outward.

3. A locking connector according to claim 1, characterized in that: The top plate extends outward from one side to form multiple spaced overlapping plates, all of which are located on one side of the blocking block. The plastic body is provided with overlapping grooves that cooperate with the overlapping plates.

4. A locking connector according to claim 1, characterized in that: The plastic body has a slot that mates with the buckle. The slot passes through the side wall of the plastic body and is connected to the mounting groove.

5. A locking connector according to claim 1, characterized in that: The terminal includes a hose clamping part, a wire clamping part, a limiting part, and a connecting part connected in sequence. The bottom of the hose clamping part and the wire clamping part are both arc-shaped structures, and the included angle between the two arms of the hose clamping part is greater than the included angle between the two arms of the wire clamping part. The limiting part is in contact with the blocking block. The two sides of the connecting part are respectively provided with protrusions, and the terminal is installed in the terminal slot through the protrusions.

6. A locking connector according to claim 5, characterized in that: The terminal slot is provided with a groove that matches the protrusion.

7. A locking connector according to claim 5, characterized in that: The terminal slot is provided with a limiting slot that cooperates with the limiting part.

8. A locking connector according to any one of claims 1 to 7, characterized in that: The rear end of the plastic body extends integrally with two rows of upper and lower plug-in portions, and the rear ends of the multiple terminal slots extend to the plug-in portions one by one and penetrate the rear ends of the plug-in portions.

9. A locking connector according to claim 8, characterized in that: The upper side of one pair of corresponding upper and lower plug-in parts in the two rows of plug-in parts is provided with a first anti-foolproof slope, and the upper side of the remaining plug-in parts in the upper row and some plug-in parts in the lower row are provided with a second anti-foolproof slope. The second anti-foolproof slope is set in the opposite direction to the first anti-foolproof slope.

10. A locking connector according to claim 8, characterized in that: In the two rows of plug-in parts, the two adjacent plug-in parts at both ends of the upper row are connected to form an integral plug-in structure. The upper end of the integral plug-in structure is symmetrically provided with a third anti-foolproof slope. The upper ends of the remaining plug-in parts in the upper row are symmetrically provided with a fourth anti-foolproof slope. The lower ends of all plug-in parts in the lower row are symmetrically provided with a fifth anti-foolproof slope.

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