Waterproof trunk door switch

Abstract

The utility model discloses a waterproof trunk door switch which comprises a shell assembly and a PCBA board located in the shell assembly, the PCBA board is provided with a push switch, and the shell assembly comprises a shell supporting body with the upper end and the lower end open and a sealing soft rubber piece integrally connected with the upper portion of the shell supporting body in an injection molding mode. The sealing soft rubber piece comprises a first sealing ring annularly distributed on the periphery of the shell supporting body, a second sealing ring annularly distributed at an opening in the upper end of the shell supporting body and an annular connecting part connected between the first sealing ring and the second sealing ring, and an elastic buckle piece located below the first sealing ring is installed on the side wall of the shell supporting body. The second sealing ring is connected with a key assembly abutting against the pressing switch. According to the utility model, a structural mode of combining soft and hard rubber is adopted, and the sealing soft rubber piece is integrally formed on the shell supporting body through injection molding, so that the performance requirements of self-structure water resistance and sealing with the trunk door can be met at the same time, and the structural parts are few and simpler.

Description

Technical Field

[0001] This utility model relates to the field of switch technology, and in particular to a waterproof tailgate switch. Background Technology

[0002] External tailgate switches for automobiles generally achieve circuit connection and thus open the tailgate by pressing. Currently, there are two common installation methods for automobile tailgate switches: (1) For vehicles where the airtightness between the vehicle and the switch body is not high, the switch structure is rigidly assembled with the tailgate sheet metal parts; (2) For vehicles where the airtightness between the vehicle and the switch body is required, a medium is mostly used for sealing, for example, adding waterproof foam between the switch and the tailgate sheet metal parts to achieve a sealing effect.

[0003] It is evident that conventional waterproofing technologies for tailgate switches mostly require additional processes and components to achieve a seal, which not only increases costs but also consumes more time and effort for manufacturers.

[0004] Therefore, in order to improve waterproofing performance, further improvements are needed to the existing structure of the tailgate switch. Utility Model Content

[0005] The purpose of this invention is to provide a waterproof tailgate switch that adopts a structure combining soft and hard rubber. By integrally injection molding a sealing soft rubber component into the outer shell support, the switch not only ensures its own waterproof performance but also integrates the active waterproofing process into the switch body, saving time, cost, and procedures. Furthermore, the switch structure provides better sealing performance with the tailgate, meeting the requirements for daily water wading without affecting the vehicle's functionality. This effectively solves the problems existing in conventional tailgate switches in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A waterproof tailgate switch includes a housing assembly and a PCBA board located inside the housing assembly. The PCBA board is equipped with a push-button switch. The housing assembly includes a housing support body with openings at both the upper and lower ends and a sealing soft rubber component integrally injection molded and connected to the upper part of the housing support body. The sealing soft rubber component includes a first sealing ring annularly distributed around the outer periphery of the housing support body, a second sealing ring annularly distributed at the upper opening of the housing support body, and an annular connecting portion connecting the first sealing ring and the second sealing ring. An elastic buckle is installed on the side wall of the housing support body below the first sealing ring. A button assembly is connected to the second sealing ring, and the lower part of the button assembly abuts against the push-button switch.

[0008] Furthermore, the lower end face of the first sealing ring is provided with a first circumferentially distributed rib.

[0009] Furthermore, there are two first ribs, with the height of the outer first rib being higher than the height of the inner first rib.

[0010] Furthermore, a base for mounting a PCBA board is snapped into the lower opening of the outer shell support. The outer periphery of the base has a circumferential protrusion with a support wall that snaps into the inner wall of the outer shell support. The sealing soft rubber component also includes a third sealing ring that is circumferentially connected between the first sealing ring and the circumferential connecting part. The third sealing ring abuts against the top of the support wall.

[0011] Furthermore, the button assembly includes a slider for abutting an active push switch and a button for pressing. The button is connected to the slider by a screw, and the second sealing ring is clamped and connected by the button and the slider.

[0012] Furthermore, the upper end face of the second sealing ring is provided with a second circumferentially distributed rib.

[0013] Furthermore, the top of the slider is recessed and has annularly distributed snap-fit ​​grooves, and the lower end face of the second sealing ring protrudes and has snap-fit ​​ribs that are embedded in the snap-fit ​​grooves.

[0014] Furthermore, the outer side of the slider is provided with a guide groove, and the inner side of the support wall is provided with a guide plate that slides in cooperation with the guide groove.

[0015] Furthermore, the bottom of the base is provided with downwardly protruding mounting rings, which are snapped into a waterproof shell. A waterproof adhesive block is provided between the waterproof shell and the mounting ring. The waterproof shell, the base, and the waterproof adhesive block are all provided with wire harnesses for the PCBA board to pass through. The wire harnesses are connected to the wire harnesses by interference fit through the wire harnesses.

[0016] Furthermore, the bottom of the base is provided with a through vent hole and a breathable membrane for covering and sealing the vent hole.

[0017] Compared with the prior art, this utility model provides a waterproof tailgate switch, which has the following advantages:

[0018] This utility model adopts a structure combining soft and hard rubber. A sealing soft rubber component is integrally injection molded into the outer shell support, while the hard rubber portion of the outer shell support and the sealing soft rubber component work together to form an outer shell assembly. On one hand, the button assembly connected to the second sealing ring achieves elastic connection and waterproofing of the switch structure itself through the annular connection part, ensuring that the switch function is unaffected after the vehicle has been submerged in water. On the other hand, under the support of the elastic buckle, the first sealing ring fits tightly with the tailgate sheet metal to form a seal. Utilizing active waterproofing, it ensures that water will not enter the vehicle body through the gap between the switch and the tailgate sheet metal after the vehicle has been submerged. Thus, while ensuring its own waterproof performance, the active waterproofing process can be integrated into the switch body, resulting in fewer structural parts, a simpler structure, and savings in time, cost, and processes. Furthermore, the sealing performance between the switch structure and the tailgate is better, meeting the waterproofing requirements after the vehicle has been submerged in water, without affecting the vehicle's functionality. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is an exploded view of the parts of this utility model;

[0022] Figure 3 This is a schematic diagram illustrating the use of this utility model;

[0023] Figure 4 This is a schematic diagram of the half-section structure of the present invention after installation;

[0024] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0025] Figure 6 This is a schematic diagram of the three-dimensional structure of the base;

[0026] Figure 7 A three-dimensional structural diagram of a sealing soft rubber component from a first-view perspective;

[0027] Figure 8 This is a three-dimensional structural diagram of the sealing soft rubber component from a second perspective.

[0028] Reference numerals: 1. Housing assembly; 11. Housing support; 111. Buckle; 112. Recess; 113. Slot; 12. Sealing soft rubber part; 121. First sealing ring; 1211. First rib; 122. Second sealing ring; 1221. Second rib; 1222. Snap-fit ​​rib; 123. Annular connecting part; 124. Third sealing ring; 2. PCBA board; 21. Push switch; 22. Wiring harness; 3. Elastic buckle; 4. 41. Button assembly; 41. Slider; 411. Snap-fit ​​groove; 412. Guide groove; 42. Button; 43. Screw; 5. Base; 51. Support wall; 511. Guide plate; 512. Hook; 513. Block; 52. Mounting ring; 53. Vent hole; 54. Pressing part; 6. Waterproof shell; 61. Fixing block; 7. Waterproof adhesive block; 71. Threading hole; 8. Breathable membrane; 9. Cable tie; 10. Tailgate sheet metal parts; 101. Mounting port. Detailed Implementation

[0029] The technical solution of this utility model will be clearly and completely described below through detailed embodiments and in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0030] Please refer to Figures 1-8 This embodiment provides a waterproof tailgate switch that can be installed on the tailgate sheet metal part 10. The tailgate sheet metal part 10 has a mounting opening 101 for snapping on the waterproof tailgate switch.

[0031] Specifically, the waterproof tailgate switch includes a housing assembly 1 and a PCBA board 2 located inside the housing assembly 1. The PCBA board 2 is equipped with a push switch 21. The housing assembly 1 includes a housing support body 11 with openings at both the upper and lower ends and a sealing soft rubber part 12 integrally injection molded and connected to the upper part of the housing support body 11. The sealing soft rubber part 12 includes a first sealing ring 121 annularly distributed around the outer periphery of the housing support body 11, a second sealing ring 122 annularly distributed at the upper opening of the housing support body 11, and an annular connecting part 123 connecting the first sealing ring 121 and the second sealing ring 122. An elastic buckle 3 located below the first sealing ring 121 is installed on the side wall of the housing support body 11. The second sealing ring 122 is connected to a button assembly 4, and the lower part of the button assembly 4 abuts against the push switch 21. The design employs a combination of hard and soft rubber components. A sealed soft rubber part is integrally injection-molded into the outer shell support, while the hard rubber part and the sealed soft rubber part work together to form a single outer shell assembly. On one hand, the button assembly connected to the second sealing ring achieves a flexible connection and inherent waterproofing through the annular connection, ensuring the switch's functionality remains unaffected after the vehicle has been submerged in water. On the other hand, supported by the elastic clips, the first sealing ring fits tightly against the tailgate sheet metal, creating a seal. This active waterproofing prevents water from entering the vehicle body through the gap between the switch and the tailgate sheet metal after the vehicle has been submerged. Thus, while maintaining its waterproof performance, the active waterproofing process can be integrated into the switch body itself, resulting in a simpler structure with fewer parts, saving time, cost, and processes. Furthermore, the switch structure provides better sealing performance with the tailgate, meeting the waterproofing requirements after the vehicle has been submerged in water without affecting the vehicle's functionality.

[0032] As an improved implementation, the lower end face of the first sealing ring 121 is provided with annularly distributed first ribs 1211. The first ribs further improve the sealing performance between the outer shell assembly and the tailgate sheet metal part. Specifically, the first ribs 1211 are interference-fitted with the tailgate sheet metal part 10.

[0033] In a preferred embodiment, two first ribs 1211 are provided, with the height of the outer first rib being higher than the height of the inner first rib. This allows for adaptation to variations in dimensional tolerances of the tailgate sheet metal parts at the mounting opening.

[0034] In some embodiments, a base 5 for mounting the PCBA board 2 is snapped onto the lower opening of the outer casing support 11. The outer periphery of the base 5 has a circumferentially protruding support wall 51 that snaps onto the inner wall of the outer casing support 11. The sealing soft rubber component 12 further includes a third sealing ring 124 circumferentially connected between the first sealing ring 121 and the circumferential connecting portion 123. The third sealing ring 124 abuts against the top of the support wall 51. Specifically, the lower surface of the third sealing ring 124 and the top of the support wall 51 are interference-fitted. Thus, after installation, the base is interference-fitted with the soft rubber portion on the outer casing assembly, improving the sealing performance between the base and the outer casing assembly.

[0035] In some specific embodiments, the inner surface of the support wall 51 is provided with a hook 512 for engaging the PCBA board 2. By pushing the PCBA board 2 towards the base 5 from top to bottom until the hook 512 engages the edge of the PCBA board 2, the PCBA board 2 is fixed to the base 5. The outer shell support body 11 is provided with a fastener 111, and the outer surface of the support wall 51 is provided with a locking block 513 that matches the fastener 111. By utilizing the engaging action of the fastener 111 and the locking block 513, the base 5 and the outer shell support body 11 can be engaged and assembled into one unit.

[0036] In some embodiments, the button assembly 4 includes a slider 41 for abutting against the activated push switch 21 and a button 42 for pressing. The button 42 is connected to the slider 41 by a screw 43, and the second sealing ring 122 is clamped and connected by the button 42 and the slider 41. By tightening the screw, the button and the slider can be engaged to clamp the second sealing ring, thereby achieving a flexible installation of the button assembly with a sealing and waterproof effect on the housing assembly.

[0037] As an improved implementation, the upper end face of the second sealing ring 122 is provided with annularly distributed second ribs 1221. The second ribs further improve the sealing performance between the button and the slider. Specifically, the second ribs 1221 on the second sealing ring 122 are interference-fitted with the lower surface of the button 42.

[0038] In some specific embodiments, the top of the slider 41 is recessed and provided with annularly distributed snap-fit ​​grooves 411, and the lower end face of the second sealing ring 122 is protruding and provided with snap-fit ​​ribs 1222 that are embedded in the snap-fit ​​grooves 411. Through the engagement of the snap-fit ​​ribs and the snap-fit ​​grooves, both a good positioning effect and an anti-detachment effect can be achieved.

[0039] In some specific embodiments, as an example, the annular connecting portion 123 is inclined from the outside to the inside, and the top of the outer shell support 11 is recessed with a recess 112 for the button 42 to move up and down. This makes it easy to press the button, and the annular connecting portion can automatically reset after the pressing operation is completed by deformation.

[0040] In some specific embodiments, the outer side of the slider 41 is provided with a guide groove 412, and the inner side of the support wall 51 is provided with a guide plate 511 that slides in cooperation with the guide groove 412. Through the sliding guidance effect of the guide groove and the guide plate, the button assembly can move more smoothly, thereby reliably activating the push switch.

[0041] In some specific embodiments, as an example, the elastic buckle 3 is a bent metal sheet. The side wall of the outer shell support 11 is provided with a slot 113 for inserting the elastic buckle 3, and the base 5 is provided with a pressing part 54 for pressing against the elastic buckle 3. After the base is snapped in, the elastic buckle can be fixedly installed by using the pressing part on the base to cooperate with the slot.

[0042] In some embodiments, the bottom of the base 5 is provided with a downwardly protruding mounting ring 52. The mounting ring 52 is snapped onto a waterproof shell 6. A waterproof adhesive block 7 is provided between the waterproof shell 6 and the mounting ring 52. The waterproof shell 6, the base 5, and the waterproof adhesive block 7 are all provided with through holes 71 for wire harnesses 22 on the PCBA board 2 to pass through. The through holes 71 on the waterproof adhesive block 7 are interference-fitted with the wire harnesses 22. In this way, the snap-fit ​​waterproof shell can provide support, thereby cooperating with the base to clamp the waterproof adhesive block. The interference fit between the wire harness and the through holes on the waterproof adhesive block can effectively seal the holes where the wire harnesses exit from the base and provide good sealing performance.

[0043] In some specific embodiments, a fixing block 61 is connected to the bottom of the waterproof shell 6, and the wire harness 22 is tied and fixed to the fixing block 61 by cable ties 9.

[0044] In some specific embodiments, the bottom of the base 5 is provided with a through vent 53 and a breathable membrane 8 for covering and sealing the vent 53. Thus, after the waterproof tailgate switch is assembled, the airtightness of the switch structure can be tested through the vent on the base, and after the test is completed, the vent is covered and sealed by applying the breathable membrane.

[0045] When using, refer to Figure 3 First, thread the wiring harness 22 through the mounting hole 101 on the tailgate sheet metal part 10, then forcefully push the waterproof tailgate switch into the mounting hole 101 to snap it in place; once installed, as... Figure 4 and Figure 5 As shown, the first sealing ring 121 and the elastic buckle 3 on the housing assembly 1 respectively abut against the two sides of the edge of the mounting port 101. The first rib 1211 on the first sealing ring 121 abuts against the edge of the mounting port 101 in an interference fit to form a good seal. Then, the wiring port of the wiring harness 22 is connected to complete the installation of the waterproof tailgate switch.

[0046] The above embodiments are merely illustrative of the concept and technical solution of this utility model, and are not intended to limit this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

[0047] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A waterproof tailgate switch, comprising a housing assembly and a PCBA board located inside the housing assembly, wherein the PCBA board is provided with a push-button switch, characterized in that, The outer casing assembly includes an outer casing support body with openings at both the top and bottom, and a sealing soft rubber component integrally injection molded and connected to the upper part of the outer casing support body. The sealing soft rubber component includes a first sealing ring distributed in annularly around the outer periphery of the outer casing support body, a second sealing ring distributed in annularly at the upper opening of the outer casing support body, and an annular connecting part connecting the first sealing ring and the second sealing ring. An elastic buckle component located below the first sealing ring is installed on the side wall of the outer casing support body. A button assembly is connected to the second sealing ring, and the lower part of the button assembly abuts against the push switch.

2. The waterproof tailgate switch according to claim 1, characterized in that, The lower end face of the first sealing ring is provided with a first circumferentially distributed rib.

3. The waterproof tailgate switch according to claim 2, characterized in that, There are two first ribs, with the height of the outer first rib being higher than that of the inner first rib.

4. The waterproof tailgate switch according to claim 1, characterized in that, The lower end of the outer shell support is fitted with a base for mounting a PCBA board. The outer periphery of the base has a circumferential protrusion with a support wall that is engaged with the inner wall of the outer shell support. The sealing soft rubber component also includes a third sealing ring that is circumferentially connected between the first sealing ring and the circumferential connecting part. The third sealing ring abuts against the top of the support wall.

5. The waterproof tailgate switch according to claim 4, characterized in that, The button assembly includes a slider for abutting an active push switch and a button for pressing. The button is connected to the slider by a screw, and the second sealing ring is clamped and connected by the button and the slider.

6. The waterproof tailgate switch according to claim 5, characterized in that, The upper end face of the second sealing ring is provided with a second circumferentially distributed rib.

7. The waterproof tailgate switch according to claim 5, characterized in that, The top of the slider is recessed and has an annularly distributed snap-fit ​​groove, and the lower end face of the second sealing ring has a snap-fit ​​rib that is embedded in the snap-fit ​​groove.

8. The waterproof tailgate switch according to claim 5, characterized in that, The slider has a guide groove on its outer side, and the support wall has a guide plate that slides with the guide groove on its inner side.

9. The waterproof tailgate switch according to claim 4, characterized in that, The base has downwardly protruding mounting rings at its bottom, and a waterproof shell is snapped onto the mounting rings. A waterproof adhesive block is provided between the waterproof shell and the mounting rings. The waterproof shell, the base, and the waterproof adhesive block are all provided with wire harnesses for the PCBA board to pass through. The wire harnesses are connected to the wire harnesses by interference fit through the wire harnesses.

10. The waterproof tailgate switch according to claim 9, characterized in that, The bottom of the base is provided with a through-hole and a breathable membrane for covering and sealing the vent.

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