A wiring harness waterproof connector

Abstract

The utility model discloses a kind of wiring harness waterproof connectors, including connector shell, terminal table is equipped in the front of connector shell, a plurality of terminal slots are equipped on terminal table, the rear end of connector shell is equipped with the assembly slot being communicated with each terminal slot, still include waterproof connection mechanism and conducting terminal;Waterproof connection mechanism includes waterproof rubber pad being equipped in assembly slot, conducting terminal is inserted into each terminal slot, conducting terminal front end is equipped with signal jack, signal jack inner wall is equipped with main spring piece, main spring piece and terminal slot inner wall between still be equipped with auxiliary spring piece, the utility model is optimized waterproof structure, enhances connection fixed, simplifies assembly maintenance, effectively solve the problems, such as insufficient waterproof performance of existing wiring harness connector, unstable connection, inconvenient maintenance, reliable, durable solution is provided for the circuit connection of various equipment, with remarkable practical value.

Description

Technical Field

[0001] This utility model relates to the field of waterproof connector technology, specifically to a waterproof connector for wire harnesses. Background Technology

[0002] In fields such as electronic equipment, automobiles, and industrial control, wire harness connectors are key components for achieving circuit connections. Their connection stability and waterproof performance directly affect the normal operation of equipment. Existing wire harness connectors have several problems in practical applications: On the one hand, the sealing effect at the wire connection point between the wire harness and the connector is poor, allowing moisture to easily seep into the connector through gaps, leading to faults such as short circuits and poor contact. The risk of waterproof failure is even higher in humid environments or outdoor scenarios. On the other hand, the mating stability between the conductive terminals and male pins inside the connector is insufficient. Long-term use or vibration environments can easily lead to spring fatigue and loose contact, resulting in signal transmission interruption or equipment malfunction.

[0003] Furthermore, the existing connectors have poorly designed conductive terminal fixing structures, which are prone to axial displacement after assembly, affecting connection reliability. Most connectors also lack convenient maintenance and inspection structures, making it difficult to visually assess the condition of critical components such as internal springs. Maintenance requires complete disassembly, which is cumbersome. Additionally, the overall connection and fixation between the connector and the supporting equipment is insufficient, making them susceptible to detachment due to external pulling, further reducing the stability of equipment operation. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a waterproof wire harness connector that can solve the problems of insufficient waterproof performance, unstable connection and inconvenient maintenance of existing wire harness connectors.

[0005] The technical solution adopted by this utility model is as follows: a waterproof connector for wire harnesses, including a connector housing, a terminal block at the front of the connector housing, a plurality of terminal slots on the terminal block, and an assembly slot at the rear of the connector housing communicating with each terminal slot. It also includes a waterproof connection mechanism and conductive terminals. The waterproof connection mechanism includes a waterproof gasket disposed in the assembly slot, with waterproof holes arranged corresponding to the terminal slots on the waterproof gasket, and each waterproof hole containing an elastic puncture-resistant sealing layer. The conductive terminals are inserted into each terminal slot, and a signal socket is provided at the front end of the conductive terminal. A main spring is provided on the inner wall of the signal socket, and an auxiliary spring is provided between the main spring and the inner wall of the terminal slot.

[0006] In this technical solution, conductive terminals are installed in the terminal slots on the terminal block of the connector housing, and waterproof gaskets for sealing and waterproofing are installed in the assembly slot at the rear end of the connector housing. During assembly, the conductive wire harness used for electrical connection with the conductive terminals passes through the waterproof holes of the waterproof gasket and can pierce the piercing seal layer to connect with the conductive terminals. After the piercing seal layer is pierced, it can form a seal with the surface of the wire harness, ensuring that the wire harness remains sealed after passing through the waterproof holes. The signal socket at the front end of the conductive terminal is provided for the male pin to be inserted to form a signal connection. When the device connects to the male pin, the male pin is inserted into the signal socket, causing the main spring to rise first. After the main spring contacts the auxiliary spring, it springs back and abuts against the male pin, thereby ensuring the stability of the conductive assembly and preventing the device from falling off after assembly with the connecting device.

[0007] Preferably, the assembly slot opening is provided with a back cover that abuts against the waterproof gasket, and the back cover is provided with thread holes arranged one-to-one with the waterproof holes. The waterproof gasket is pressurized by the back cover to form an interference fit with the assembly slot.

[0008] Preferably, the edge of the back cover is assembled with the edge of the mounting groove via a snap-fit ​​structure.

[0009] Preferably, the terminal block plug adapter is equipped with a cover, the inner wall of the cover is provided with a positioning boss, and the outer side of the terminal block is provided with a front positioning groove and a rear positioning groove that can be fitted with the positioning boss and are arranged at intervals. After the cover is inserted into the terminal block, the positioning boss can be inserted into the front positioning groove and the rear positioning groove in turn.

[0010] Preferably, the terminal block is fitted with a sealing ring that abuts against the rear end of the cover.

[0011] Preferably, the terminal block is provided with a spring-loaded protrusion at each terminal slot opening position. After the cover is inserted and adapted to the terminal block, the front end of the spring-loaded protrusion can be inserted into the terminal slot and abut against the conductive terminal.

[0012] Preferably, the inner wall of the cover is provided with a relief groove that corresponds one-to-one with the spring tongue protrusion.

[0013] Preferably, the outer surface of the connector housing is provided with a connection fixing buckle.

[0014] Preferably, the outer surfaces of the main and auxiliary conductive terminals are provided with inspection ports.

[0015] The beneficial effects of this utility model are:

[0016] The waterproof connection mechanism of this utility model adopts a double waterproof design of puncture-type sealing layer and interference fit, which realizes immediate sealing after wire threading and effectively prevents water from seeping in along the wire harness; the back cover is fixed and squeezed by the buckle structure to form an interference fit with the assembly groove, eliminating the gap between the waterproof gasket and the assembly groove, forming a second waterproof barrier. The multiple sealing structure greatly improves the overall waterproof performance of the connector and adapts to complex environments such as humid and outdoor environments.

[0017] In this invention, the main spring and auxiliary spring of the conductive terminal work together to significantly improve the contact stability of the male pin: when the male pin is inserted into the signal jack, the main spring first rises and contacts the auxiliary spring, and the elasticity of the auxiliary spring is used to achieve springback and pressing, ensuring that the main spring and the male pin are tightly abutted, avoiding contact loosening due to spring fatigue; at the same time, after the cover is assembled, the spring tongue protrusion is inserted into the terminal slot and abuts against the conductive terminal to form a mechanical lock, preventing the conductive terminal from axially shifting, and improving the connection stability in all aspects.

[0018] In this utility model, the snap cover adopts a step-by-step positioning design with a front positioning groove and a rear positioning groove. During assembly, the positioning boss first engages with the front positioning groove to achieve pre-positioning, and then the snap cover is pushed to lock the positioning boss with the rear positioning groove. The assembly process is precise and controllable, reducing the difficulty of operation. The inspection port on the outer side of the conductive terminal allows for direct observation of the usage status of the main spring and auxiliary spring. It is possible to determine whether key components are worn or fatigued without disassembly, which facilitates timely maintenance or replacement and reduces maintenance time. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0020] Figure 1 This is a perspective view of the waterproof connector for the wire harness provided in the embodiments of this utility model.

[0021] Figure 2 This is an exploded view of the waterproof connector for wire harness provided in the embodiments of this utility model.

[0022] Figure 3 This is a perspective view of the conductive terminals of the waterproof connector for the wire harness provided in the embodiments of this utility model.

[0023] Figure 4 This is a cross-sectional view of the conductive terminals of the waterproof connector for the wire harness provided in this embodiment of the present invention.

[0024] Figure 5This is an assembly view of the waterproof connector for wire harness provided in the embodiments of this utility model.

[0025] Reference numerals in the attached drawings: connector housing 100, terminal block 110, terminal slot 111, assembly slot 120, front positioning slot 130, rear positioning slot 140, spring tongue boss 150, conductive terminal 200, signal jack 210, main spring 220, auxiliary spring 230, inspection port 240, waterproof gasket 300, waterproof hole 310, puncture-type sealing layer 320, rear cover 400, wire hole 410, snap-fit ​​structure 420, snap cover 500, clearance groove 510, sealing ring 600, connection fixing buckle 700. Detailed Implementation

[0026] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0027] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0028] like Figures 1 to 4 As shown, a specific embodiment of this utility model provides a waterproof connector for wire harnesses, which has good waterproof effect and better connection stability. Specifically, it includes a connector housing 100, a terminal block 110 at the front of the connector housing 100, a plurality of terminal slots 111 on the terminal block 110, and an assembly slot 120 at the rear of the connector housing 100 communicating with each terminal slot 111. It also includes a waterproof connection mechanism and conductive terminals 200. The waterproof connection mechanism includes a waterproof gasket 300 disposed in the assembly slot 120, with waterproof holes 310 arranged corresponding to the terminal slots 111 on the waterproof gasket 300. Each waterproof hole 310 contains an elastic puncture-type sealing layer 320. The conductive terminals 200 are inserted into each terminal slot 111. The front end of the conductive terminal 200 has a signal socket 210, and the inner wall of the signal socket 210 has a main spring piece 220. An auxiliary spring piece 230 is also provided between the main spring piece 220 and the inner wall of the terminal slot 111.

[0029] like Figures 1 to 4As shown, with the above configuration, in this embodiment, the conductive terminals 200 are installed in the terminal slots 111 on the terminal block 110 of the connector housing 100, and the waterproof gasket 300, which serves to seal and waterproof, is installed in the assembly slot 120 at the rear end of the connector housing 100. During assembly, the conductive wire harness used to electrically connect with the conductive terminals 200 passes through the waterproof hole 310 of the waterproof gasket 300 and can pierce the piercing sealing layer 320 to connect with the conductive terminals 200. After the piercing sealing layer 320 is pierced, it can form a seal with the surface of the wire harness, ensuring that the wire harness remains sealed after passing through the waterproof hole 310. The piercing sealing layer 320 is made of rubber and has serrated surfaces, allowing the wire harness to pierce the sealing layer and form a seal. The signal socket 210 at the front end of the conductive terminal 200 is provided for the insertion of the male pin to form a signal connection. When the device is connected to the male pin, the male pin is inserted into the signal socket 210, causing the main spring 220 to rise first. After the main spring 220 contacts the auxiliary spring 230, it springs back to abut against the male pin, thereby ensuring the stability of the conductive assembly and preventing the device from falling off after assembly with the connected device. In this embodiment, an inspection port 240 is provided on the outer side of the main spring 220 and the auxiliary spring 230 of the conductive terminal 200. The inspection port 240 on the outer side of the conductive terminal 200 allows for direct observation of the usage status of the main spring 220 and the auxiliary spring 230. It is possible to determine whether the key components are worn or fatigued without disassembly, which facilitates timely maintenance or replacement and reduces maintenance time.

[0030] like Figure 5 As shown, in practical applications, the terminals of the connector housing 100 are provided with different numbers of terminal slots 111 as needed, so as to install different numbers of conductive terminals 200, usually 6-30 holes, preferably conventional connectors such as 6-hole, 8-hole and 16-hole.

[0031] like Figure 2 As shown, to ensure the stability and sealing of the waterproof connection mechanism, this embodiment provides a rear cover 400 at the opening of the assembly groove 120, which abuts against the waterproof gasket 300. The rear cover 400 has wire holes 410 arranged one-to-one with the waterproof holes 310. The waterproof gasket 300 is pressed against the assembly groove 120 by the rear cover 400 in an interference fit. Thus, when the waterproof gasket 300 is inserted into the assembly groove 120, the rear cover 400 is fixed inside the assembly groove 120, so that the waterproof gasket 300 is compressed and forms an interference fit with the assembly groove 120, keeping the assembly groove 120 and the waterproof gasket 300 sealed and preventing water from entering. In addition, the edge of the rear cover 400 is assembled with the edge of the assembly groove 120 by a snap-fit ​​structure 420, which ensures that the rear cover 400 is firmly and stably installed.

[0032] like Figure 2As shown, this embodiment also includes a snap-on cover 500 for inserting into the terminal block 110. The snap-on cover 500 has a positioning boss on its inner wall, and a front positioning groove 130 and a rear positioning groove 140 arranged at intervals on the outer side of the terminal block 110, which can be fitted with the positioning boss. After the snap-on cover 500 is inserted into the terminal block 110, the positioning boss can be inserted into the front positioning groove 130 and the rear positioning groove 140 successively. During assembly, the snap-on cover 500 is initially positioned and installed by the positioning boss and the front positioning groove. When the snap-on cover 500 is further pushed, the positioning boss and the rear positioning groove 140 fit together, forming a fixed assembly. Simultaneously, a sealing ring 600 is fitted on the terminal block 110 that abuts against the rear end of the snap-on cover 500, ensuring a sealing effect between the snap-on cover 500 and the terminal block 110.

[0033] like Figure 2 As shown, since conductive terminals 200 need to be installed in the terminal slots 111, this embodiment provides a spring-loaded protrusion 150 with elasticity at the opening position of each terminal slot 111 on the terminal block 110. After the cover 500 is inserted and fitted into the terminal block 110, the front end of the spring-loaded protrusion 150 can be inserted into the terminal slot 111 and abut against the conductive terminal 200. In this way, since the cover 500 can be inserted into the terminal slot 111, the spring-loaded protrusion 150 can be locked into the conductive terminal 200. The mechanical locking formed by the spring-loaded protrusion and the conductive terminal 200 results in higher connection stability. In this embodiment, a relief groove 510 corresponding to the spring-loaded protrusion 150 is provided on the inner wall of the cover 500, so that the cover 500 can be smoothly assembled with the terminal block 110.

[0034] like Figure 1 As shown, in practical applications, this device needs to be connected to a connector with male pins. To prevent the connection from falling off, this embodiment has a connection fixing buckle 700 on the outer surface of the connector housing 100, so that the device can be stably connected to the matching equipment and prevent it from falling off.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A waterproof connector for a wire harness, comprising a connector housing (100), a terminal block (110) provided at the front of the connector housing (100), a plurality of terminal slots (111) provided on the terminal block (110), and an assembly slot (120) provided at the rear end of the connector housing (100) communicating with each of the terminal slots (111), characterized in that; It also includes a waterproof connection mechanism and conductive terminals (200); The waterproof connection mechanism includes a waterproof gasket (300) provided in the assembly groove (120), and the waterproof gasket (300) is provided with waterproof holes (310) arranged one-to-one with the terminal groove (111). Each waterproof hole (310) is provided with an elastic puncture-type sealing layer (320). The conductive terminal (200) is inserted into each terminal slot (111). The front end of the conductive terminal (200) is provided with a signal socket (210). The inner wall of the signal socket (210) is provided with a main spring (220). An auxiliary spring (230) is also provided between the main spring (220) and the inner wall of the terminal slot (111).

2. The waterproof connector for wire harnesses according to claim 1, characterized in that; The assembly groove (120) has an opening with a back cover (400) that abuts against the waterproof gasket (300). The back cover (400) has wire holes (410) arranged one-to-one with the waterproof holes (310). The waterproof gasket (300) is pressed against the assembly groove (120) by the back cover (400) for interference fit.

3. The waterproof connector for wire harnesses according to claim 2, characterized in that; The edge of the back cover (400) is assembled with the edge of the mounting groove (120) by a snap-fit ​​structure (420).

4. The waterproof connector for wire harnesses according to claim 1, characterized in that; The terminal block (110) is fitted with a snap cover (500). The inner wall of the snap cover (500) is provided with a positioning boss. The outer side of the terminal block (110) is provided with a front positioning groove (130) and a rear positioning groove (140) that can fit with the positioning boss and are arranged at intervals. After the snap cover (500) is snapped into the terminal block (110), the positioning boss can be snapped into the front positioning groove (130) and the rear positioning groove (140) in turn.

5. The waterproof connector for wire harnesses according to claim 4, characterized in that; The terminal block (110) is fitted with a sealing ring (600) that abuts against the rear end of the cover (500).

6. The waterproof connector for wire harnesses according to claim 4, characterized in that; The terminal block (110) is provided with a spring-loaded protrusion (150) at the opening position of each terminal slot (111). After the cover (500) is inserted and matched with the terminal block (110), the front end of the spring-loaded protrusion (150) can be inserted into the terminal slot (111) and abut against the conductive terminal (200).

7. The waterproof connector for wire harnesses according to claim 6, characterized in that; The inner wall of the cover (500) is provided with a relief groove (510) that corresponds one-to-one with the spring tongue protrusion (150).

8. The waterproof connector for wire harnesses according to claim 1, characterized in that; The outer surface of the connector housing (100) is provided with a connection fixing buckle (700).

9. The waterproof connector for wire harnesses according to claim 1, characterized in that; The outer surfaces of the main spring (220) and auxiliary spring (230) of the conductive terminal (200) are provided with inspection ports (240).

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