Double waterproof structure of vehicle outer door switch

Abstract

The utility model discloses a dual waterproof structure of a door switch outside a vehicle, which comprises a base and a shell, a pressing cover is integrally or fixedly arranged on the shell, a mechanical switch linked with the pressing cover and a circuit board electrically connected with the mechanical switch are arranged in the base, and a sealing assembly is arranged at the seam of the base and the shell. An elastic sealing piece corresponding to the pressing cover is arranged in the base, a sealing chamber is formed between the elastic sealing piece and the inner wall of the base, and the mechanical switch and the circuit board are installed in the sealing chamber.

Description

TECHNICAL FIELD

[0001] The utility model relates to car switch technical field especially relates to a car door switch double waterproof structure. BACKGROUND

[0002] The existing car door switch includes a shell and a base, a sealed chamber is formed by connecting the shell and the base, and electronic components such as a mechanical switch are installed in the closed sealed chamber, the waterproof level of the car door switch is very high, and it is obviously insufficient to set only one layer of seal at the connecting part of the shell and the base. SUMMARY

[0003] The utility model discloses a car door switch double waterproof structure which overcomes the shortcomings and deficiencies of the prior art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a car door switch double waterproof structure, which comprises a base, a shell fixedly connected to the base, a pressing cover integrally formed on or fixed to the shell, a mechanical switch in the base and linked with the pressing cover, and a circuit board in the base and electrically connected with the mechanical switch, a sealing assembly arranged at the joint of the base and the shell, an elastic sealing member arranged in the base and corresponding to the pressing cover, a sealing chamber formed between the elastic sealing member and the inner wall of the base, and the mechanical switch and the circuit board installed in the sealing chamber.

[0005] As a preferred technical scheme of the utility model, the elastic sealing member is injection molded in the base, and the elastic sealing member has a cover-shaped structure with one side raised toward the pressing cover and the other side recessed.

[0006] As a preferred technical scheme of the utility model, a receiving groove is formed in the bottom of the base, an opening is arranged below the receiving groove, the circuit board is fixed in the receiving groove and filled with solid glue below the circuit board at the opening of the receiving groove, and a through hole is formed in the top wall of the receiving groove and communicated with the sealing chamber.

[0007] As a preferred technical scheme of the utility model, the base is raised toward the pressing cover to form a positioning column, the positioning column is positioned corresponding to the receiving groove, and a threaded hole is arranged on the other side of the positioning column, the circuit board is arranged on the top wall of the receiving groove and screwed with the threaded hole through a fastener.

[0008] As a preferred technical scheme of the utility model, the pressing cover is an elastic cover-shaped structure raised on one side of the base.

[0009] As a preferred technical scheme of the utility model, a button is arranged between the pressing cover and the base, the button is suspended in the base, a return spring is arranged between the button and the base, and a pushing part corresponding to the elastic sealing member is arranged on the button.

[0010] As a preferred technical scheme of the utility model, the two sides of the button are provided with guiding grooves matched with the guiding parts.

[0011] As a preferred technical scheme of the utility model, the elastic sealing piece is made of soft glue material.

[0012] As a preferred technical scheme of the utility model, the base is provided with an annular insertion slot on one side facing the shell, the shell is provided with an annular insertion part matched with the annular insertion slot, and the sealing assembly comprises a first soft rubber pad injection molded in the annular insertion slot and a second soft rubber pad injection molded at the lower end of the annular insertion part.

[0013] As a preferred technical scheme of the utility model, the base is provided with a ventilation hole at the bottom and a ventilation film in the ventilation hole.

[0014] Compared with the prior art, the utility model has the beneficial effects that: the upper shell and the base are fixedly connected, the sealing assembly is arranged at the joint of the two to form the first sealing, the circuit board and the mechanical switch are installed in the sealing chamber and are closed by the elastic sealing piece to form the second sealing, the inner and outer parts are respectively provided with waterproof structures, double protection is realized, and the switch waterlogging failure is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is the structural schematic diagram of the utility model;

[0016] Fig. 2 It is the sectional view of the utility model;

[0017] Fig. 3 It is the structural schematic diagram of the utility model without the pressing cover;

[0018] Fig. 4 It is the structural schematic diagram of the button in the utility model;

[0019] Fig. 5 It is the perspective view of the base in the utility model in the downward direction;

[0020] Fig. 6 It is the perspective view of the base in the utility model in the upward direction;

[0021] Fig. 7 It is the perspective view of the shell in the utility model in the downward direction.

[0022] Reference numerals: 1. Base; 2. Housing; 3. Press cover; 4. Mechanical switch; 5. Circuit board; 6. Sealing assembly; 7. Elastic seal; 8. Sealing chamber; 9. Receiving groove; 10. Opening; 11. Solid glue; 12. Through hole; 13. Positioning post; 14. Button; 15. Return spring; 16. Pushing part; 17. Guide part; 18. Guide groove; 19. Annular slot; 20. Annular insertion part; 21. First soft rubber pad; 22. Second soft rubber pad; 23. Vent hole; 24. Vent membrane. Detailed Implementation

[0023] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0024] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0025] like Figs. 1 to 7 The diagram illustrates a double waterproof structure for a vehicle exterior door switch, comprising a base 1, a housing 2 fixedly connected to the base 1, a press cover 3 integrally formed or fixedly mounted on the housing 2, a mechanical switch 4 linked to the press cover 3, and a circuit board 5 electrically connected to the mechanical switch 4 (the switch terminals can be directly soldered to a circuit board 5, or connected via wires, pins, or wirelessly; the connection method is not limited to these; any connection that allows the mechanical switch 4 to transmit an electrical signal to the circuit board 5 after activation is an electrical connection). A sealing component 6 is provided at the joint between the base 1 and the housing 2. The base 1 is provided with an elastic sealing element 7 corresponding to the press cover 3. The elastic sealing element 7 and the inner wall of the base 1 form a sealing chamber 8. The mechanical switch 4 (which can be a micro switch, contact switch, button switch, etc., not limited to a specific switch, any switch that can trigger the mechanical switch 4 and transmit a signal to the circuit board 5 after being pressed) and the circuit board 5 are installed in the sealing chamber 8. In this embodiment, the press cover 3 is an elastic cover-shaped structure raised on one side opposite to the base 1. The elastic sealing element 7 is made of soft rubber material, which can be rubber, silicone, thermoplastic elastomer, etc.

[0026] The upper shell and the base 1 are fixedly connected, and a sealing component 6 is set at the joint between the two to form the first seal. The circuit board 5 and the mechanical switch 4 are installed in the sealed chamber 8 and sealed by the elastic sealing element 7 to form the second seal. Waterproof structures are set inside and outside, which provides double protection and avoids the situation of switch failure due to water ingress.

[0027] The elastic seal 7 is injection molded onto the base 1. The elastic seal 7 is a cap-shaped structure that is raised on one side towards the pressing cover 3 and recessed on the other side.

[0028] The base 1 has a receiving groove 9 at its bottom, and an opening 10 is provided below the receiving groove 9. The circuit board 5 is fixed in the receiving groove 9, and the opening 10 of the receiving groove 9 is sealed and filled with solid adhesive 11 (hot melt adhesive, which needs to be melted by heating and applied to the surface of the object to be bonded. When cooled, the adhesive re-cures, thereby achieving the bonding of the objects) located below the circuit board 5. The top wall of the receiving groove 9 has a through hole 12 communicating with the sealing chamber 8. The solid adhesive 11 and the elastic sealing element 7 are used to seal the opening and prevent liquid from entering.

[0029] The base 1 protrudes towards the pressing cover 3 to form a positioning post 13. The positioning post 13 corresponds to the position of the receiving groove 9 and the other side of the positioning post 13 is provided with a threaded hole. The circuit board 5 is placed on the inner top wall of the receiving groove 9 and is threadedly connected to the threaded hole by fasteners. In this embodiment, there are two positioning posts 13 located on both sides of the base 1. The fasteners are screws, which pass through the circuit board 5 and lock it in the receiving groove 9.

[0030] A button 14 is also provided between the press cover 3 and the base 1. The button 14 is suspended in the base 1 and a return spring 15 is provided between the button 14 and the base 1. A push part 16 corresponding to the elastic seal 7 is provided on the button 14.

[0031] The base 1 has guide portions 17 on both sides facing the button 14, and the button 14 has guide grooves 18 on both sides that cooperate with the guide portions 17.

[0032] The base 1 has an annular slot 19 on the side facing the outer shell 2. The outer shell 2 has an annular insertion part 20 that engages with the annular slot 19. The sealing component 6 includes a first soft rubber pad 21 injected into the annular slot 19 and a second soft rubber pad 22 injected into the lower end of the annular insertion part 20. The base 1 and the outer shell 2 are fixedly connected. In this embodiment, the fixed connection can be a snap-fit, bolt connection, adhesive bonding, ultrasonic welding, etc. The first soft rubber pad 21 and the second soft rubber pad 22 are pressed together to form a first seal. The first soft rubber pad 21 and the base 1 are two-color injection molded.

[0033] The bottom of the base 1 is provided with a vent 23 and a vent membrane 24 is provided inside the vent 23. When pressed, the internal air is discharged, which plays a role in air circulation, making it easier to press and improving the feel.

[0034] The basic principle, main features and advantages of the present application are shown and described above, and those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A double waterproof structure for a vehicle exterior door switch, comprising a base (1) and a housing (2) fixedly connected to the base (1), wherein a press cover (3) is integrally or fixedly mounted on the housing (2), a mechanical switch (4) linked to the press cover (3) and a circuit board (5) electrically connected to the mechanical switch (4) are disposed inside the base (1), and a sealing component (6) is disposed at the joint between the base (1) and the housing (2), characterized in that: The base (1) is provided with an elastic sealing member (7) corresponding to the pressing cover (3), a sealing chamber (8) is formed between the elastic sealing member (7) and the inner wall of the base (1), and the mechanical switch (4) and the circuit board (5) are installed in the sealing chamber (8).

2. The dual waterproof structure of an out-of-vehicle door switch according to claim 1, characterized by: The elastic sealing member (7) is injection molded on the base (1), and the elastic sealing member (7) has a cover-shaped structure with one side rising towards the pressing cover (3) and the other side being recessed.

3. The dual waterproof structure of an out-of-vehicle door switch according to claim 1, characterized by: The base (1) is provided with a containing groove (9) at the bottom, an opening (10) is arranged below the containing groove (9), the circuit board (5) is fixed in the containing groove (9), and the opening (10) of the containing groove (9) is filled with solid glue (11) below the circuit board (5).

4. The dual waterproof structure of an out-of-vehicle door switch according to claim 3, characterized by: The base (1) rises towards the pressing cover (3) to form a positioning column (13), the positioning column (13) corresponds to the position of the containing groove (9), and the other side of the positioning column (13) is provided with a threaded hole, and the circuit board (5) is arranged on the top wall of the containing groove (9) and is screwed with the threaded hole through a fastener.

5. The dual waterproof structure of an out-of-vehicle door switch according to claim 1, characterized by: The pressing cover (3) is an elastic cover-shaped structure rising on one side of the base (1).

6. The dual waterproof structure of an out-of-vehicle door switch according to claim 5, characterized by: A button (14) is arranged between the pressing cover (3) and the base (1), the button (14) is suspended in the base (1), a return spring (15) is arranged between the button (14) and the base (1), and a pushing part (16) corresponding to the elastic sealing member (7) is arranged on the button (14).

7. The dual waterproof structure of an out-of-vehicle door switch according to claim 6, characterized by: The base (1) is provided with a guide part (17) on both sides of one end facing the button (14), and the button (14) is provided with a guide groove (18) guided and matched with the guide part (17).

8. The dual waterproof structure for an out-of-vehicle door switch according to claim 1 or 2, characterized by: The elastic sealing member (7) is made of soft glue material.

9. The dual waterproof structure of an out-of-vehicle door switch according to claim 1, characterized by: The base (1) is provided with an annular insertion groove (19) on one side facing the shell (2), the shell (2) is provided with an annular insertion part (20) inserted and matched with the annular insertion groove (19), and the sealing assembly (6) comprises a first soft rubber pad (21) injection molded in the annular insertion groove (19) and a second soft rubber pad (22) injection molded at the lower end of the annular insertion part (20).

10. The dual waterproof structure of an out-of-vehicle door switch according to claim 1, characterized by: The base (1) is provided with a breathable hole (23) at the bottom, and a breathable film (24) is arranged in the breathable hole (23).

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