A waterproof micro switch and a vehicle door handle

Abstract

The utility model relates to the technical field of automobile parts, more particularly, relate to a waterproof microswitch and door handle, wherein waterproof microswitch includes switch body, the shell with opening and presss from both sides the cover, the switch body is connected in the shell and is towards the opening direction setting, presss from both sides the cover sealed connection in the opening of shell, the inside of presss from both sides the cover with the shell forms the accommodation space that can accommodate the switch body between, presss from both sides the cover has the expansion part for the balance inside gas pressure of the accommodation space. Because setting up expansion part on presss from both sides the cover, when the user presses presss from both sides the cover, the accommodation space is extruded to cause its inside gas pressure to have the tendency of increasing, expansion part will expand deformation outward at this moment, thereby balance the gas pressure inside the accommodation space, to reduce the gas in the accommodation space as far as possible outward leakage, therefore can reduce the situation that water is sucked into the accommodation space due to internal negative pressure, improved the waterproof performance of microswitch.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and more specifically, to a waterproof micro switch and a car door handle. Background Technology

[0002] In automotive design, door handles are defined as wet areas, meaning parts exposed to water in the external environment. Many door handles incorporate microswitches, such as concealed door handles or sliding door handles. Because microswitches are electrical components, they require appropriate waterproofing structures.

[0003] In existing technologies, the problem of poor waterproof performance of microswitches is usually addressed by strengthening the sealing connection. For example, adding an adhesive layer or other sealing structure at the connection points where leakage may occur, but this increases material costs. Utility Model Content

[0004] To overcome the problem of poor waterproof performance of micro switches in the prior art, the first aspect of this utility model provides a waterproof micro switch.

[0005] A second aspect of this utility model also provides a car door handle.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a waterproof micro switch, comprising: a switch body, a housing with an opening, and a pressing sleeve, wherein the switch body is connected to the housing and is disposed facing the opening, the pressing sleeve is sealed to the opening of the housing, and an accommodating space is formed between the interior of the pressing sleeve and the housing to accommodate the switch body, and the pressing sleeve has an expansion portion for balancing the air pressure inside the accommodating space.

[0007] The inventors discovered that existing microswitches house the switch body within a press sleeve. Because the press sleeve creates a sealed space, pressing it compresses this space, increasing the air pressure. Simultaneously, the pressure widens the gap between the press sleeve and the housing, causing gas to leak out. When the user releases the press sleeve, it returns to its original position, creating negative pressure within the space. If water is present outside the gap at this time, it will be drawn into the space, causing the microswitch to malfunction.

[0008] In the technical solution of this utility model, since the pressing sleeve is provided with an expansion part, when the user presses the pressing sleeve, the accommodating space is squeezed, which causes the internal air pressure to tend to increase. At this time, the expansion part will expand and deform outward, thereby balancing the air pressure inside the accommodating space, so as to minimize the leakage of gas from the accommodating space to the outside. Therefore, it can reduce the situation where water is sucked into the accommodating space due to internal negative pressure, and improve the waterproof performance of the micro switch.

[0009] Furthermore, the expansion portion is located on the pressing sleeve at a position away from the housing. In this design, placing the expansion portion away from the housing allows it sufficient space to expand and deform, avoiding structural interference with the housing.

[0010] Furthermore, the pressing sleeve has a pressing portion for pressing the switch body, and the expansion portion is arranged around the pressing portion. In this solution, the user can press the switch body by pressing the pressing portion, and the design of the expansion portion surrounding the pressing portion can maintain the stability of the pressing sleeve during the pressing process.

[0011] Furthermore, a circuit board is provided in the housing, the switch body is connected to the circuit board, and the pressing sleeve is sealed to the side of the circuit board where the switch body is located. In this design, the switch body is connected to an external circuit through the circuit board, forming a receiving space between the circuit board and the pressing sleeve.

[0012] Furthermore, a sealing ring is provided between the pressing sleeve and the circuit board. In this design, the sealing ring further improves the sealing performance of the accommodating space.

[0013] Furthermore, the outer wall of the pressing sleeve is provided with a slot, and the opening of the housing is provided with a snap-fit ​​part, which is tightly fitted into the slot. In this design, the stability and sealing of the connection are improved by the cooperation of the slot and the snap-fit ​​part.

[0014] Furthermore, the pressing sleeve has a recessed structure facing the switch body, and the pressing part is disposed at the bottom of the recessed structure. In this design, by providing the recessed structure, the pressing part can be made closer to the switch body, while providing more space for the expansion part.

[0015] Furthermore, it also includes an external button body connected to the housing, which can be used to push the pressing part to press the switch body. In this solution, the external button body facilitates pushing the pressing part from the outside, avoiding direct contact between the pressing sleeve and the outside.

[0016] Furthermore, the external button body includes a flexible support portion and a pressing post. The flexible support portion is fixedly connected to the housing, and the pressing post is fixedly connected to the end of the support portion away from the housing. The end of the pressing post away from the flexible support portion is positioned towards the pressing portion. In this design, the pressing post facilitates insertion into the recessed structure to press the pressing portion, and the flexible support portion provides support and reset for the pressing post.

[0017] This utility model discloses a car door handle, including a handle housing, within which the aforementioned waterproof micro switch is installed. In this design, the car door handle has good waterproof performance, reducing the risk of failure due to water ingress.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] I. The waterproof micro switch of this utility model has an expansion part on the pressing sleeve. When the user presses the pressing sleeve, the receiving space is squeezed, which causes the internal air pressure to increase. At this time, the expansion part will expand and deform outward, thereby balancing the air pressure inside the receiving space and minimizing the leakage of gas from the receiving space. Therefore, it can reduce the situation where water is sucked into the receiving space due to internal negative pressure, thus improving the waterproof performance of the micro switch.

[0020] Second, the door handle of this utility model adopts the above-mentioned waterproof micro switch, which has good waterproof performance and can reduce the problem of failure due to water ingress. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the waterproof micro switch of this utility model;

[0022] Figure 2 yes Figure 1 The main view;

[0023] Figure 3 yes Figure 2 AA section view;

[0024] Figure 4 This is a cross-sectional view of the press sleeve;

[0025] Figure 5 This is a structural schematic diagram of the car door handle of this utility model;

[0026] Figure 6 yes Figure 5 BB cross-sectional view.

[0027] In the attached diagram: 1. Switch body; 2. Housing; 21. Circuit board; 22. Snap-fit ​​part; 3. Press sleeve; 31. Expansion part; 32. Press part; 33. Slot; 34. Recessed structure; 4. Sealing ring; 5. Outer button body; 51. Flexible support part; 52. Press post; S. Accommodation space; 100. Handle housing. Detailed Implementation

[0028] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0029] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0030] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0031] Example 1

[0032] refer to Figures 1 to 4 This embodiment discloses a waterproof micro switch, including a switch body 1, a housing 2 with an opening, and a pressing sleeve 3. The switch body 1 is connected to the housing 2 and is arranged facing the opening. The pressing sleeve 3 is sealed to the opening of the housing 2. An accommodating space S is formed between the inside of the pressing sleeve 3 and the housing 2, which can accommodate the switch body 1. The pressing sleeve 3 has an expansion part 31 for balancing the air pressure inside the accommodating space S.

[0033] The inventors discovered that existing microswitches house the switch body 1 within a pressing sleeve 3. Because the pressing sleeve 3 forms a sealed containment space S, when the user presses the pressing sleeve 3, it compresses the entire containment space S, increasing the air pressure within it. Simultaneously, the user's pressure widens the gap between the pressing sleeve 3 and the housing 2, causing gas to leak out of the containment space S. When the user releases the pressing sleeve 3, it returns to its original position, creating a negative pressure within the containment space S. If water is present outside the gap at this time, it will be drawn into the containment space S, causing the microswitch to malfunction.

[0034] In this embodiment, since the pressing sleeve 3 is provided with an expansion part 31, when the user presses the pressing sleeve 3, the accommodating space S is squeezed, causing the internal air pressure to tend to increase. At this time, the expansion part 31 will expand and deform outward, thereby balancing the air pressure inside the accommodating space S, so as to minimize the leakage of gas from the accommodating space S to the outside. Therefore, it can reduce the situation where water is sucked into the accommodating space S due to internal negative pressure, and improve the waterproof performance of the micro switch.

[0035] In this embodiment, the pressing sleeve 3 can be made of rubber material, and the thickness of the expansion part 31 can be selected from 0.2mm to 0.3mm, ensuring that the expansion part 31 can expand and deform outward without breaking when the pressing sleeve 3 is subjected to pressure. Of course, in other embodiments, the pressing sleeve 3 can also be made of other materials, which can achieve the same effect.

[0036] refer to Figure 3 and Figure 4 The expansion portion 31 is disposed on the pressing sleeve 3 at a location away from the housing 2. In this embodiment, the expansion portion 31 is disposed at a location away from the housing 2, so that the expansion portion 31 has sufficient space to expand and deform, avoiding structural interference with the housing 2. Taking the illustrated direction as an example, the pressing sleeve 3 is connected to the opening at the upper end of the housing 2, the lower end of the pressing sleeve 3 is tightly connected to the housing 2 in a circumferential direction, and the expansion portion 31 is disposed at the upper end of the pressing sleeve 3.

[0037] refer to Figure 4The pressing sleeve 3 has a pressing portion 32 for pressing the switch body 1, and an expansion portion 31 is arranged around the pressing portion 32. In this embodiment, the user can press the switch body 1 by pressing the pressing portion 32. The design of the expansion portion 31 surrounding the pressing portion 32 can maintain the stability of the pressing sleeve 3 during the pressing process. Specifically, the expansion portion 31 is arranged circumferentially on the outer side of the upper end of the pressing sleeve 3, and the expansion portion 31 is arranged around the pressing portion 32 from the outside. When the pressing portion 32 is pressed, the expansion portion 31 can expand outward in a circumferential direction, thereby compensating for the volume of the accommodating space S compressed when the pressing portion 32 is pressed. It can be understood that the degree of expansion of the expansion portion 31 is related to the degree of compression of the accommodating space S caused by pressing. If the pressing portion 32 is close to the switch body 1, the degree of compression of the accommodating space S is small, and the required degree of expansion of the expansion portion 31 is also small, or only a slight outward deformation is needed, and vice versa.

[0038] refer to Figure 3 The housing 2 contains a circuit board 21, and the switch body 1 is connected to the circuit board 21. The pressing sleeve 3 is sealed to the side of the circuit board 21 where the switch body 1 is located. In this embodiment, the switch body 1 is connected to an external circuit through the circuit board 21, forming a receiving space S between the circuit board 21 and the pressing sleeve 3. Taking the figure as an example, the bottom of the housing 2 is the circuit board 21, which can be considered as part of the housing 2. The circuit board 21 can be used to connect an external power supply line, so that a complete power circuit is formed between the circuit board 21, the switch body 1, and the external power supply line.

[0039] The press sleeve 3 is tightly connected to the circuit board 21, which improves waterproof performance. However, in the prior art, when the press sleeve 3 is pressed, the tiny gap between the bottom of the press sleeve 3 and the circuit board 21, which is difficult to see with the naked eye, increases. This is because the bottom of the press sleeve 3 is lifted due to the pressure. At this time, the air in the accommodating space S is squeezed out from the gap, and external water is easily drawn in after the press sleeve 3 is released. In this embodiment, the expansion part 31 is provided at the upper end of the press sleeve 3 away from the housing 2. When the press sleeve 3 is pressed, the expansion part 31 performs deformation compensation at the upper end, which can reduce the lifting phenomenon of the bottom of the press sleeve 3. At the same time, the expansion part 31 can also balance the air pressure in the accommodating space S. Under this dual effect, the entry of external water can be greatly reduced, thus achieving a better waterproof effect.

[0040] refer to Figure 3A sealing ring 4 is provided between the pressing sleeve 3 and the circuit board 21. In this embodiment, the sealing performance of the accommodating space S is further improved by the sealing ring 4. The sealing ring 4 is arranged in a ring shape at the bottom of the pressing sleeve 3, and a groove for placing the sealing ring 4 can be opened at a corresponding position on the upper surface of the circuit board 21. The sealing ring 4 is pressed between the pressing sleeve 3 and the upper surface of the circuit board 21, thereby improving the sealing effect between the pressing sleeve 3 and the circuit board 21.

[0041] refer to Figure 3 and Figure 4 The outer wall of the pressing sleeve 3 has a groove 33, and the opening of the housing 2 has a snap-fit ​​part 22, which is tightly fitted into the groove 33. In this embodiment, the stability and sealing of the connection are improved by the cooperation of the groove 33 and the snap-fit ​​part 22. The size of the snap-fit ​​part 22 can be made slightly larger than the size of the groove 33, and the snap-fit ​​part 22 is connected into the groove 33 in an interference fit, thereby effectively improving the sealing between the housing 2 and the pressing sleeve 3.

[0042] refer to Figure 4 The pressing sleeve 3 has a recessed structure 34 facing the switch body 1, and the pressing part 32 is disposed at the bottom of the recessed structure 34. In this embodiment, by providing the recessed structure 34, the pressing part 32 can be made closer to the switch body 1, while providing more space for the expansion part 31 in the circumferential direction.

[0043] Example 2

[0044] refer to Figures 1 to 4 This embodiment is similar to Embodiment 1, except that in this embodiment, the waterproof micro switch also includes an external button body 5 connected to the housing 2. The external button body 5 can be used to push the pressing part 32 to press the switch body 1. In this embodiment, the external button body 5 facilitates pushing the pressing part 32 from the outside, avoiding direct contact between the pressing sleeve 3 and the outside. It is equivalent to indirectly pressing the switch body 1 by pushing the pressing sleeve 3 through the external button body 5. Since the pressing sleeve 3 does not directly contact the outside, this can improve the waterproof effect to a certain extent.

[0045] refer to Figure 3 The outer button body 5 includes a flexible support portion 51 and a pressing post 52. The flexible support portion 51 is fixedly connected to the housing 2, and the pressing post 52 is fixedly connected to the end of the flexible support portion 51 away from the housing 2. The end of the pressing post 52 away from the flexible support portion 51 is positioned towards the pressing part 32. In this embodiment, the pressing post 52 facilitates insertion into the recessed structure 34 to press down the pressing part 32, and the flexible support portion 51 can support and reset the pressing post 52.

[0046] Specifically, the outer button body 5 can be made of rubber. A flexible support portion 51, shaped like a cover, is positioned downwards above the pressing sleeve 3. The flexible support portion 51 and the housing 2 can be directly connected or indirectly connected through other components. A pressing post 52 is connected to the inner center of the flexible support portion 51. The bottom of the pressing post 52 can contact the upper side of the pressing part 32 of the pressing sleeve 3, thus reducing the pressing distance. When the outer button body 5 is pressed, the flexible support portion 51 deforms downwards, causing the pressing post 52 to push the pressing part 32 downwards. When the outer button body 5 is released, the flexible support portion 51 can return to its original shape.

[0047] Example 3

[0048] refer to Figure 5 and Figure 6 This utility model discloses a car door handle, including a handle housing 100, within which a waterproof micro switch of Embodiment 1 or Embodiment 2 is installed. In this embodiment, due to the use of the aforementioned waterproof micro switch, the car door handle has better waterproof performance, reducing the problem of failure due to water ingress.

[0049] Specifically, refer to Figure 6 The car door handle includes a handle housing 100 and a waterproof micro switch, which is disposed within the handle housing 100. The housing 2 is fixedly connected to the interior of the door handle housing 100, and the lower end of the outer button body 5 is fixedly connected to the interior of the door handle housing 100. The upper end of the outer button body 5 extends from an opening at the top of the door handle housing 100, allowing the user to press the outer button body 5 through the opening. Even if water enters the door handle housing 100, it is difficult for it to penetrate the waterproof micro switch. Therefore, the car door handle of this embodiment has good waterproof performance and high reliability.

[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A waterproof micro switch, characterized in that: The device includes a switch body (1), a housing (2) with an opening, and a pressing sleeve (3). The switch body (1) is connected to the housing (2) and is arranged facing the opening. The pressing sleeve (3) is sealed to the opening of the housing (2). An accommodating space (S) is formed between the interior of the pressing sleeve (3) and the housing (2) to accommodate the switch body (1). The pressing sleeve (3) has an expansion portion (31) for balancing the air pressure inside the accommodating space (S).

2. The waterproof micro switch according to claim 1, characterized in that: The expansion portion (31) is located on the pressing sleeve (3) at a position away from the housing (2).

3. The waterproof micro switch according to claim 2, wherein: The pressing sleeve (3) has a pressing part (32) for pressing the switch body (1), and the expansion part (31) is arranged around the pressing part (32).

4. The waterproof micro switch according to claim 1, wherein: The housing (2) contains a circuit board (21), the switch body (1) is connected to the circuit board (21), and the pressing sleeve (3) is sealed to the side of the circuit board (21) where the switch body (1) is located.

5. The waterproof micro switch according to claim 4, wherein: A sealing ring (4) is provided between the pressing sleeve (3) and the circuit board (21).

6. The waterproof micro switch according to claim 1, wherein: The outer side wall of the pressing sleeve (3) is provided with a slot (33), and the opening of the housing (2) is provided with a snap-fit ​​part (22), which is tightly connected to the slot (33).

7. The waterproof micro switch according to claim 3, wherein: The pressing sleeve (3) has a recessed structure (34) facing the switch body (1), and the pressing part (32) is disposed at the bottom of the recessed structure (34).

8. The waterproof micro switch according to claim 7, wherein: It also includes an external button body (5) connected to the housing (2), which can be used to push the pressing part (32) to press the switch body (1).

9. The waterproof micro switch according to claim 8, wherein: The external button body (5) includes a flexible support part (51) and a pressing column (52). The flexible support part (51) is fixedly connected to the housing (2). The pressing column (52) is fixedly connected to the end of the support part away from the housing (2). The end of the pressing column (52) away from the flexible support part (51) is disposed towards the pressing part (32).

10. A vehicle door handle, characterized by: Includes a handle housing (100), within which a waterproof micro switch according to any one of claims 1 to 9 is installed.

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