Waterproof automobile tail door switch

Abstract

The waterproof automobile tail door switch comprises a shell, a button, a circuit board and a base, the circuit board and the base are arranged in the shell, the upper end and the lower end of the shell are open, the circuit board is located on the inner side of the base and connected with the base, and a microswitch is arranged on the circuit board. An integrally-formed elastic connecting sleeve is arranged at the upper end of the shell in the circumferential direction of the shell, the button and the elastic connecting sleeve are integrally formed, axially slide relative to the shell and make contact with or be separated from the microswitch, and glue is poured into the bottom of the base. By adopting the technical scheme, the waterproof automobile tail door switch provided by the utility model has the advantages that the button and the shell are connected through the soft rubber injection molding, and the bottom is filled with the rubber, so that the sealing performance is good, water is prevented from entering, and the waterproof effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive switches, in particular to a waterproof automotive tailgate switch. Background Art

[0002] For automotive tailgate switches, their waterproof levels vary according to different installation positions. To meet the waterproof requirements, numerous waterproof structures need to be designed. Most automotive tailgate switches adopt a push-button switch structure. When it rains, rainwater will flow to the periphery of the switch, and water easily enters the interior of the switch through the gaps between the housing and the button. Existing automotive tailgate switches have poor waterproof performance. After long-term use and frequent exposure to rain and dust, they are prone to circuit breakage and operational failure, affecting the service life of the switch. Summary of the Invention

[0003] Objective of the utility model: To overcome the defects of the prior art, the utility model provides a waterproof automotive tailgate switch, which connects the button and the housing through soft glue injection molding and fills glue at the bottom, with good sealing performance, preventing water from entering and having a good waterproof effect.

[0004] Technical solution of the utility model: A waterproof automotive tailgate switch includes a housing, a button, a circuit board and a base arranged inside the housing. The upper and lower ends of the housing are open. The circuit board is located inside the base and connected to the base. A micro switch is arranged on the circuit board. An integrally formed elastic connecting sleeve is arranged along the circumferential direction at the upper end of the housing. The button is integrally formed with the elastic connecting sleeve and axially slides relative to the housing to contact or separate from the micro switch. Glue is filled at the bottom of the base.

[0005] By adopting the above technical solution, the elastic connecting sleeve is formed by soft glue injection molding, and the button is integrally formed with the elastic connecting sleeve, which improves the sealing performance of the switch and does not affect the movement of the button at the same time. When pressing the button downward, the elastic connecting sleeve moves synchronously. After releasing the hand, the button resets under the action of the elastic connecting sleeve, eliminating the need for a separate reset component to reset the button, reducing the number of components. Glue is filled at the bottom of the base, making the switch have good sealing performance, effectively waterproof and achieving a high waterproof level for the switch.

[0006] Further setting of the utility model: Extension columns are arranged at the bottom of the base. Vent holes and waterproof breathable membranes covering the vent holes are arranged on the extension columns. The vent holes expose the glue-filled part.

[0007] By adopting the above further setting, the air permeability is improved without affecting the sealing performance. The heat generated by internal components such as the circuit board during operation can escape from the vent holes, avoiding problems such as bulging of internal components at high temperatures or shrinkage at low temperatures caused by improved sealing performance.

[0008] Further setting of the present utility model: A limiting boss is provided on the inner side wall of the elastic connecting sleeve, the lower end of the button abuts against the limiting boss, a slot is provided on the button along its circumferential direction, and the upper end of the elastic connecting sleeve is located in the slot.

[0009] With the above further setting, the sealing performance between the button and the elastic connecting sleeve is better, and the connection is more compact.

[0010] Even further setting of the present utility model: The housing includes an integrally formed inner housing and an outer housing, the elastic connecting sleeve is arranged at the upper end of the outer housing, the base is located inside the inner housing, the lower end of the inner housing protrudes outside the outer housing, the outer housing is provided with lugs, and the lugs are provided with connection holes.

[0011] With the above even further setting, the housing adopts a double-layer structure, which avoids affecting the potting part when installing with screws, thus affecting the sealing performance of the switch.

[0012] Even further setting of the present utility model: A guiding seat is arranged inside the inner housing, the guiding seat is located above the circuit board, a sliding groove is provided on the guiding seat corresponding to the position of the micro switch, a pressing column is arranged on the button, and the pressing column is slidably arranged in the sliding groove. A guiding groove is also provided on the guiding seat, a guiding column is arranged on the button, and the guiding column is located in the guiding groove.

[0013] With the above even further setting, when operating the button, the axial sliding structure of the button is stable and does not deviate. The pressing column touches the micro switch, outputs a signal, and the tailgate of the vehicle opens.

[0014] Even further setting of the present utility model: The base is detachably connected to the housing, a connecting block is arranged on the outer side wall of the base, a connecting groove is arranged on the inner housing, and the connecting block is clamped in the connecting groove.

[0015] With the above even further setting, the connection structure is simple, and the disassembly and assembly are convenient.

[0016] Even further setting of the present utility model: A plurality of positioning blocks are arranged in the slot, a plurality of positioning grooves are correspondingly arranged on the elastic connecting sleeve, and the positioning blocks are located in the positioning grooves.

[0017] With the above even further setting, the structure between the button and the elastic connecting sleeve is more firm and stable, which is convenient for the synchronous movement of the elastic connecting sleeve and the button. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the present utility model;

[0019] Figure 2 It is a sectional view of a specific embodiment of the present utility model;

[0020] Figure 3 Schematic diagram of the housing of the specific embodiment of the present utility model;

[0021] Figure 4 Schematic diagram of the interior of the housing of the specific embodiment of the present utility model;

[0022] Figure 5 Schematic diagram of the waterproof and breathable membrane of the specific embodiment of the present utility model;

[0023] Figure 6 Schematic diagram of the base and the guide seat of the specific embodiment of the present utility model;

[0024] Figure 7 Schematic diagram of the installation of the base and the circuit board of the specific embodiment of the present utility model;

[0025] Figure 8 Schematic diagram of the button of the specific embodiment of the present utility model;

[0026] Figure 9 Schematic diagram of the connection between the switch and the wire harness of the specific embodiment of the present utility model. Specific embodiments

[0027] Next, the technical solutions in this embodiment will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0028] It should be noted that in the description of the present utility model, all directional indications (such as up, down, front, back...) are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. In the description of the present utility model, "several" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0030] In addition, the technical solutions between the various embodiments of the present utility model can be combined with each other, but it must be based on the fact that those skilled in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0031] As shown Figures 1-9 in the figure, a waterproof tailgate switch for an automobile includes a housing 1, a button 2, a circuit board 3 and a base 4 disposed in the housing 1. The switch 100 is installed on the tailgate of the automobile through a wire harness 200 and a plug 300. The upper and lower ends of the housing 1 are open. The upper end of the housing 1 refers to the end where, as shown Figure 1 in the figure, the button 2 is located, which is the upper end. The circuit board 3 is located inside the base 4 and is connected to the base 4. The base 4 is provided with a plug post 41, and the circuit board 3 is provided with a jack 31. The plug post 41 is inserted into the jack 31. The circuit board 3 is provided with a micro switch 42. An integrally formed elastic connection sleeve 11 is provided along the circumferential direction of the upper end of the housing 1. The button 2 is integrally formed with the elastic connection sleeve 11 and axially slides relative to the housing 1 to contact or separate from the micro switch 42. The bottom of the base 4 is filled with glue. The elastic connection sleeve 11 is formed by soft glue injection molding, and the button 2 is integrally formed with the elastic connection sleeve 11. In this way, the sealing performance of the switch is improved, and at the same time, the movement of the button 2 is not affected. When the button 2 is pressed downward, the elastic connection sleeve 11 moves synchronously. After the hand is released, the button 2 is reset under the action of the elastic connection sleeve 11. There is no need to separately provide a reset component to reset the button 2, reducing the number of components. The bottom of the base 4 is filled with glue, so that the switch has good sealing performance and is effectively waterproof, making the waterproof grade of the switch high.

[0032] An extension post 43 is provided at the bottom of the base 4. The extension post 43 is provided with a vent hole and a waterproof breathable film 5 covering the vent hole. The vent hole exposes the glue-filled part. The glue-filled part surrounds the extension post 43. The thickness of the glue filling is less than the length of the extension post 43 and is slightly higher than the extension post 43. In this way, the vent hole can be exposed without covering the vent hole, improving the air permeability and not affecting the sealing performance. The heat generated by the internal circuit board 3 and other components during operation can escape from the vent hole, avoiding problems such as bulging of the internal components at high temperatures or shrinkage at low temperatures due to improved sealing performance.

[0033] A limiting boss 111 is provided on the inner side wall of the elastic connection sleeve 11. The lower end of the button 2 abuts against the limiting boss 111. A slot 21 is provided along the circumferential direction of the button 2. The upper end of the elastic connection sleeve 11 is located in the slot 21, making the sealing performance between the button 2 and the elastic connection sleeve 11 better and the connection more compact. A plurality of positioning blocks 211 are provided in the slot 21, and a plurality of positioning grooves 112 are correspondingly provided on the elastic connection sleeve 11. The positioning blocks 211 are located in the positioning grooves 112, making the structure between the button 2 and the elastic connection sleeve 11 more firm and stable, and facilitating the synchronous movement of the elastic connection sleeve 11 and the button 2.

[0034] The housing 1 includes an integrally formed inner housing 12 and an outer housing 13. The elastic connecting sleeve 11 is arranged at the upper end of the outer housing 13. The base 4 is located inside the inner housing 12. The lower end of the inner housing 12 protrudes outside the outer housing 13. The outer housing 13 is provided with a lug 131, and the lug 131 is provided with a connection hole. The housing 1 adopts a double-layer structure, which avoids affecting the potting part when installing with screws, thus affecting the sealing performance of the switch. The base 4 is detachably connected to the housing 1. A connecting block 45 is arranged on the outer side wall of the base 4, and a connecting groove 121 is arranged on the inner housing 12. The connecting block 45 is clamped in the connecting groove 121. The connection structure is simple and convenient for disassembly and assembly.

[0035] A guide seat 6 is arranged inside the inner housing 12. The guide seat 6 is located above the circuit board 3. A sliding groove 61 is arranged on the guide seat 6 corresponding to the position of the microswitch 42. A pressing column 22 is arranged on the button 2. The pressing column 22 is slidably arranged in the sliding groove 61. A guide groove 62 is further arranged on the guide seat 6. A guide post 23 is arranged on the button 2. The guide post 23 is located in the guide groove 62. When the button 2 is operated, the axial sliding structure of the button 2 is stable and does not shift. The pressing column 22 touches the microswitch 42 to output a signal, and the tailgate of the vehicle opens.

Claims

1. A waterproof automobile tailgate switch, comprising a housing (1), a button (2), a circuit board (3) and a base (4) arranged in the housing (1), wherein the housing (1) is open at both ends, the circuit board (3) is located inside the base (4) and connected to the base (4), and a micro switch (42) is arranged on the circuit board (3), characterized in that: An integrally formed elastic connecting sleeve (11) is provided at the upper end of the housing (1) along its circumference. The button (2) is integrally formed with the elastic connecting sleeve (11) and slides axially relative to the housing (1) to contact or separate from the micro switch (42). The bottom of the base (4) is filled with glue.

2. The waterproof automobile tailgate switch according to claim 1, characterized in that: An extension column (43) is provided at the bottom of the base (4), and a ventilation hole and a waterproof breathable membrane (5) covering the ventilation hole are provided on the extension column (43), and the ventilation hole exposes the glue-filled part.

3. The waterproof automobile tailgate switch according to claim 1 or 2, characterized in that: A limiting boss (111) is provided on the inner side wall of the elastic connection sleeve (11), the lower end of the button (2) abuts against the limiting boss (111), a slot (21) is provided on the button (2) along its circumference, and the upper end of the elastic connection sleeve (11) is located in the slot (21).

4. The waterproof automobile tailgate switch according to claim 1 or 2, characterized in that: The housing (1) comprises an inner shell (12) and an outer shell (13) which are integrally formed, the elastic connecting sleeve (11) being arranged at the upper end of the outer shell (13), the base (4) being located inside the inner shell (12), the lower end of the inner shell (12) protruding outside the outer shell (13), the outer shell (13) being provided with a lug (131), and the lug (131) being provided with a connecting hole.

5. The waterproof automobile tailgate switch according to claim 4, characterized in that: A guide seat (6) is provided in the inner shell (12), and the guide seat (6) is located above the circuit board (3). A slide groove (61) is provided on the guide seat (6) corresponding to the position of the micro switch (42). A pressure column (22) is provided on the button (2), and the pressure column (22) is slidably arranged in the slide groove (61). A guide groove (62) is also provided on the guide seat (6). A guide column (23) is provided on the button (2), and the guide column (23) is located in the guide groove (62).

6. The waterproof automobile tailgate switch according to claim 4, characterized in that: The base (4) is detachably connected to the shell (1); a connecting block (45) is provided on the outer wall of the base (4); a connecting groove (121) is provided on the inner shell (12); and the connecting block (45) is clamped in the connecting groove (121).

7. The waterproof automobile tailgate switch according to claim 3, characterized in that: A plurality of positioning blocks (211) are arranged in the slot (21), and a plurality of positioning grooves (112) are correspondingly arranged on the elastic connecting sleeve (11), and the positioning blocks (211) are located in the positioning grooves (112).

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