CN118197845B

CN118197845B - Micro-travel switch and automobile

Info

Publication number: CN118197845B
Application number: CN202410615887.9A
Authority: CN
Inventors: 林富; 叶文锋; 郑勇; 李伟; 陈涛; 朱想先
Original assignee: Ningbo Preh Joyson Automotive Electronics Co ltd
Current assignee: Ningbo Preh Joyson Automotive Electronics Co ltd
Priority date: 2024-05-17
Filing date: 2024-05-17
Publication date: 2024-08-06
Anticipated expiration: 2044-05-17
Also published as: CN118197845A

Abstract

The invention discloses a micro-travel switch and an automobile, wherein the micro-travel switch comprises a shell, a transmission piece, a trigger assembly and a circuit board, wherein a connecting sphere part on the transmission piece is clamped on an arc-shaped surface and is in transmission connection with the shell, and a plurality of trigger plates on the transmission piece are arranged at intervals along the circumferential direction of the connecting sphere; the triggering component is at least partially arranged on the outer side of the shell and is in transmission connection with the transmission piece; the circuit board is integrated with a plurality of signal sensors corresponding to the trigger plates one by one, and when the transmission piece swings relative to the shell through the connecting ball body under the driving of the trigger assembly, at least one signal sensor in the plurality of signal sensors can be triggered by the corresponding trigger plate, and the circuit board can generate a feedback signal. The micro-travel switch is enabled to have smaller travel required by being triggered when working, so that the operation accuracy and the feedback timeliness of the micro-travel switch can be improved; but also can reduce the abrasion and the mechanical stress effect in the transmission process of the transmission part.

Description

Micro-travel switch and automobile

Technical Field

The application relates to the technical field related to automotive interior switches, in particular to a micro-travel switch and an automobile.

Background

The multi-way switch technology of micro-travel belongs to the field of automobile interior switch design and is an important component of automobile electronic technology. Along with the rapid development of the intellectualization, the electric and the networking of automobiles, higher requirements are put forward on the design of automobile interior switches. The multi-way switch technology of micro-travel is generated, and aims to meet the requirements of consumers on convenience, comfort and accuracy of operation of automotive interior switches.

The micro-travel multidirectional switch technology is widely applied to various control switches in automotive interiors, such as an air conditioner control panel, an acoustic control panel, a seat adjusting switch and the like. These switches require flexible operation in multiple directions to meet the driver's control needs for different functions. Meanwhile, the micro-stroke multidirectional switching technology is also suitable for intelligent driving and intelligent interconnection system control, and the overall performance and user experience of the automobile are improved through integrated design and intelligent control.

At present, the signal triggering is generally carried out by adopting a translation mode, and as the automotive interior switch needs to be triggered in multiple directions during working, the automotive interior switch is enabled to be pressed by hands until the automotive interior switch is triggered, the required stroke is usually required to be greater than or equal to 0.5mm, thus the operation accuracy and the feedback timeliness of the automotive interior switch after being assembled into an automobile can be affected, and in addition, the mechanical stress and the abrasion of the automotive interior switch, which are required to be born in the process of large-stroke action, are also large, so the durability and the service life of the automotive interior switch can be affected.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a micro-travel switch and an automobile that can solve the above-mentioned problems.

In order to solve the technical problems, the application provides the following technical scheme:

A micro-travel switch, the micro-travel switch comprising:

a housing having an arcuate surface;

the transmission piece comprises a connecting sphere and a plurality of trigger plates, the connecting sphere is partially clamped on the arc-shaped surface and is rotationally connected with the shell, and the trigger plates are arranged at intervals along the circumferential direction of the connecting sphere;

The triggering component is at least partially arranged on the outer side of the shell and is in transmission connection with the transmission piece;

the circuit board is integrated with a plurality of signal sensors, and the signal sensors are in one-to-one correspondence with the trigger plates;

and when the transmission piece swings relative to the shell through the connecting ball under the driving of the triggering assembly, at least one signal sensor in the plurality of signal sensors can be triggered by the corresponding triggering plate, and the circuit board generates a feedback signal.

It can be understood that the swing of the transmission piece is used for triggering the circuit board and enabling the circuit board to generate a feedback signal, so that the stroke required by the micro-stroke switch to be triggered when the micro-stroke switch works is smaller, the operation accuracy and the feedback timeliness of the micro-stroke switch when the micro-stroke switch is applied to an automobile can be improved, and the corresponding functions of the micro-stroke switch can be controlled more accurately; meanwhile, the transmission piece is limited in movement by being connected with the joint between the sphere and the arc-shaped surface on the shell, so that the stress area of the transmission piece in the power transmission process can be reduced, the effect of reducing the abrasion and mechanical stress in the transmission process of the transmission piece is achieved, and the durability and the service life of the micro-travel switch are improved.

In one embodiment, the trigger assembly comprises a trigger rod, the trigger rod penetrates through the connecting sphere and is in transmission connection with the transmission piece, and the transmission piece can swing under the driving of the trigger rod;

The shell is provided with a through hole at the position of the arc-shaped surface, the trigger rod penetrates through the through hole, and the aperture of the through hole is larger than the outer diameter of the part, located in the through hole, of the trigger rod.

It will be appreciated that the actuation of the micro-travel switch may be facilitated by a trigger lever extending through the actuator to urge the actuator to oscillate.

In one embodiment, the triggering lever has a conical surface which bears against the transmission part and through which the triggering lever can drive the transmission part;

the outer diameter of the conical surface gradually increases towards the direction of the circuit board.

It can be understood that the conical surface is utilized to realize the transmission connection between the trigger rod and the transmission piece, so that the trigger rod can be separated from the transmission piece when being pressed in the length direction of the trigger rod, the transmission piece can not be driven, that is, the micro-travel switch can not trigger functions in other directions when being pressed in the Z-axis direction, and the micro-travel switch is prevented from being pressed and mistakenly touched.

In one embodiment, a first elastic element is mounted between the trigger lever and the circuit board in a precompressed manner, and can support the trigger lever and enable the conical surface of the trigger lever to be abutted against the transmission element.

It can be understood that the elastic deformation of the first elastic piece is utilized to support the trigger rod, so that the trigger rod and the transmission piece can always keep a transmission connection state, and the shaking amount caused by the existence of structural errors and assembly errors when the trigger rod and the transmission piece are assembled can be eliminated.

In one embodiment, the triggering assembly further comprises a key, wherein the key is arranged on one side, far away from the transmission piece, of the shell and is in transmission connection with the triggering rod, and the key can drive the transmission piece to swing through the triggering rod.

In one embodiment, the key is configured as a conductive member;

and the circuit board is also integrated with an inductive contact, and the inductive contact is electrically connected with the key and is used for controlling the opening/closing of the circuit board.

It can be understood that the micro-travel switch is prevented from being touched by a person by mistake by controlling the opening/closing of the circuit board by using the sensing contact electrically connected with the key.

In one embodiment, a plurality of second elastic members are respectively assembled between the trigger plates and the circuit board in a precompression mode, and the second elastic members are mutually matched and jointly used for supporting the transmission member, and the connecting balls are clamped on the arc-shaped surface.

It can be understood that the transmission piece is supported by the elastic deformation of the second elastic piece, so that the use requirement of assembly during transmission connection between the transmission piece and the shell can be met, the distance between the trigger plate and the signal sensor on the circuit board can be shortened, the trigger of the signal sensor on the circuit board can be realized once the transmission piece swings, and the stroke of the micro-stroke switch during operation can be further reduced.

In one embodiment, the micro-travel switch further comprises a base, and the circuit board is mounted on the base;

The circuit board can be structurally supported by the base in the area where the second elastic piece is located and the area where the signal sensor is located.

It can be understood that the base is used for carrying out structural support on the circuit board, so that the circuit board can be prevented from being deformed due to compression, and the stability of signal transmission during the operation of the circuit board is ensured.

In one embodiment, the number of the trigger plates is four, and the four trigger plates are symmetrically arranged in pairs.

It can be understood that through the above-mentioned structure setting, can reduce like this that two adjacent trigger plates on this driving medium take place mutual interference when triggering corresponding signal sensor on the circuit board to the accuracy of operation when can further improve this micro-travel switch work.

In addition, the application also claims an automobile comprising the micro-travel switch.

Due to the application of the scheme, compared with the prior art, the application has the following advantages:

according to the micro-travel switch and the automobile, the circuit board is triggered by the swing of the transmission piece and a feedback signal is generated, so that the travel required by the micro-travel switch when in operation is smaller, the operation accuracy and the feedback timeliness of the micro-travel switch when the micro-travel switch is applied to the automobile can be improved, and the corresponding functions of the micro-travel switch can be controlled more accurately; meanwhile, the transmission piece is limited in movement by being connected with the joint between the sphere and the arc-shaped surface on the shell, so that the stress area of the transmission piece in the power transmission process can be reduced, the effect of reducing the abrasion and mechanical stress in the transmission process of the transmission piece is achieved, and the durability and the service life of the micro-travel switch are improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present application, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following descriptions are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic diagram of a micro-switch according to the present application;

FIG. 2 is a schematic diagram of a micro-switch according to the present application, wherein a key is in a hidden state;

FIG. 3 is an exploded view of a micro-travel switch according to the present application;

FIG. 4 is a cross-sectional view of a micro-travel switch provided by the present application;

FIG. 5 is an enlarged view of portion P of FIG. 4;

FIG. 6 is a schematic view of the trigger lever and the driving member assembled in accordance with the present application;

fig. 7 is a schematic structural diagram of a transmission member in the present application.

Reference numerals: 100. a micro-travel switch; 10. a housing; 11. an arc surface; 12. a through hole; 20. a transmission member; 21. connecting a sphere; 22. a trigger plate; 23. a connecting body; 24. reinforcing ribs; 30. a trigger assembly; 31. a trigger lever; 311. conical surface; 32. a key; 40. a circuit board; 401. a spring; 41. a signal sensor; 42. a sensing contact; 50. a base; 51. a boss; 60. a screw; 101. a first elastic member; 102. and a second elastic member.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and the like are used in the description of the present application for the purpose of illustration only and do not represent the only embodiment.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" on a second feature may be that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through intermedial media. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.

Unless defined otherwise, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used in the description of the present application includes any and all combinations of one or more of the associated listed items.

The micro-travel switch 100 claimed in the application can be an automotive interior switch in an automobile, and the micro-travel switch 100 can be applied to an air conditioner control panel, an acoustic control panel, a seat adjusting switch or the like. Of course, it will be apparent to those skilled in the art that the micro-process switch 100 can be applied to other devices, such as: air conditioning, massage devices, etc.

As shown in fig. 3 and 4, the micro-travel switch 100 claimed in the present application includes a housing 10, a transmission member 20, a trigger assembly 30 and a circuit board 40, wherein the housing 10 has an arc-shaped surface 11; the transmission member 20 includes a connection sphere 21 and a plurality of trigger plates 22, wherein a portion of the connection sphere 21 is clamped to the arc surface 11 and is in transmission connection with the housing 10, and the plurality of trigger plates 22 are arranged at intervals along the circumferential direction of the connection sphere 21; the triggering component 30 is at least partially arranged on the outer side of the shell 10 and is in transmission connection with the transmission piece 20; the circuit board 40 is integrated with a plurality of signal sensors 41, and the signal sensors 41 are in one-to-one correspondence with the trigger plates 22; when the driving member 20 swings relative to the housing 10 through the connection ball 21 under the driving of the trigger assembly 30, at least one signal sensor 41 of the plurality of signal sensors 41 can be triggered by the corresponding trigger plate 22, and the circuit board 40 generates a feedback signal. Here, by means of the snap fit between the connecting ball 21 and the arcuate surface 11, the transmission member 20 can only swing relative to the housing 10 under the driving of the trigger assembly 30, and trigger the signal sensor 41 on the circuit board 40.

It can be understood that when the micro-travel switch 100 of the present application works, the swing of the transmission member 20 is used to trigger the circuit board 40 and make it generate a feedback signal, so that the stroke required by the micro-travel switch 100 to be triggered when working is smaller, thus improving the operation accuracy and feedback timeliness of the micro-travel switch 100 when applied to an automobile, and enabling the micro-travel switch 100 to control the corresponding function more accurately; meanwhile, the transmission piece 20 performs motion limiting on the transmission piece 20 through the clamping connection between the connecting ball 21 and the arc-shaped surface 11 on the shell 10, so that the stress area of the transmission piece 20 in the power transmission process can be reduced, the effect of reducing the abrasion and mechanical stress in the transmission process of the transmission piece 20 is achieved, and the durability and the service life of the micro-travel switch 100 are improved.

As shown in fig. 6 and 7, in an embodiment, the transmission member 20 further includes a connection body 23, and the connection sphere 21 and the plurality of trigger plates 22 are disposed at two ends of the connection body 23 and connected to the connection body 23 as a unitary structure. Here, the transmission member 20 may be integrally injection-molded of plastic.

As shown in fig. 7, in an embodiment, the number of the trigger plates 22 is four, and the four trigger plates 22 are symmetrically arranged in pairs, so that when the micro-travel switch 100 works, the circuit board 40 can generate different feedback signals, so as to meet the use requirement of applying the micro-travel switch 100 to an automobile to realize multi-directional operation control; in addition, mutual interference generated when two adjacent trigger plates 22 on the transmission member 20 trigger corresponding signal sensors 41 on the circuit board 40 can be reduced, so that the accuracy of operation of the micro-travel switch 100 during operation can be further improved. Here, a reinforcing rib 24 is further connected between each trigger plate 22 and the connection body 23 to improve structural strength of the trigger plate 22 when assembled on the connection body 23.

As shown in fig. 3 and 4, in an embodiment, the second elastic members 102 are respectively assembled between the plurality of trigger plates 22 and the circuit board 40 in a precompressed manner, and the plurality of second elastic members 102 are mutually matched and jointly used for supporting the transmission member 20, and the connecting ball 21 is clamped on the arc-shaped surface 11, that is, the supporting of the transmission member 20 assembled on the housing 10 is realized, so that on one hand, the requirement of the transmission member 20 on the use of the transmission connection between the transmission member 20 and the housing 10 can be met, and on the other hand, the distance between the trigger plates 22 and the signal sensor 41 on the circuit board 40 can be shortened, so that the triggering of the signal sensor 41 on the circuit board 40 can be realized once the transmission member 20 swings, and thus, the stroke of the micro-stroke switch 100 during operation can be further reduced. Here, a second elastic element 102 is respectively mounted between each triggering plate 22 and the circuit board 40, wherein the signal sensor 41 on the circuit board 40 is configured as a pressure sensor, and the triggering plate 22 can trigger the signal sensor 41 on the circuit board 40 through the corresponding second elastic element 102. It is of course obvious to a person skilled in the art that a plurality of second elastic members 102 may be used to jointly support one trigger plate 22, and that the signal sensor 41 may also be configured as a displacement sensor, which is triggered by detecting the displacement of the corresponding trigger plate 22, which will not be described herein.

As shown in fig. 2 to 4, in an embodiment, the trigger assembly 30 includes a trigger rod 31, and the trigger rod 31 is disposed through the connection sphere 21 and is in driving connection with the driving member 20, and the driving member 20 can swing under the driving of the trigger rod 31. That is, the transmission member 20 can swing relative to the housing 10 under the driving of the trigger lever 31, so that the micro-switch 100 can be triggered conveniently.

In one embodiment, as shown in fig. 5, the casing 10 is provided with a through hole 12 at the location of the arc surface 11, the trigger rod 31 is disposed through the through hole 12, and the diameter of the through hole 12 is larger than the outer diameter of the portion of the trigger rod 31 located in the through hole 12. That is, the trigger rod 31 protrudes outwards relative to the housing 10, and the housing 10 can provide a corresponding moving space for the movement of the trigger rod 31, so that the trigger rod 31 can drive the transmission member 20 to swing on the housing 10 while moving, and is convenient for a human hand to press and drive the micro-travel switch 100.

As shown in fig. 3 and 4, in an embodiment, the trigger rod 31 has a conical surface 311, the outer diameter of the conical surface 311 gradually increases toward the direction of the circuit board 40 and abuts against the transmission member 20, and the trigger rod 31 can drive the transmission member 20 through the conical surface 311. That is, the driving connection between the trigger lever 31 and the driving member 20 is realized by the conical surface 311, so that the trigger lever 31 is separated from the driving member 20 when the trigger lever 31 is pressed in the length direction, and the driving member 20 is not driven, that is, the micro-travel switch 100 is not triggered to trigger other functions when being pressed in the Z-axis direction, so as to avoid the micro-travel switch 100 from being pressed to be touched by mistake. Here, the outer circumferential walls of the trigger lever 31 are all provided with the conical surface 311, however, it is obvious to those skilled in the art that the portion of the outer circumferential wall of the trigger lever 31 for driving connection with the driving member 20 may be provided with the conical surface 311, and the other portion of the outer circumferential wall may be provided with an arc surface, a square surface or other irregular shape, so long as the motion of the trigger lever 31 is not interfered; or the trigger rod 31 and the transmission member 20 are directly connected into a whole, and the feedback signals correspondingly generated when the plurality of trigger plates 22 trigger the plurality of signal sensors 41 are set as invalid signals by utilizing the algorithm control on the circuit board 40, so that the use requirement that the micro-travel switch 100 does not trigger functions in other directions when being pressed in the Z-axis direction can be met, and the description is omitted.

As shown in fig. 3 and 4, in an embodiment, a first elastic member 101 is mounted between the trigger rod 31 and the circuit board 40 in a pre-compressed manner, and the first elastic member 101 can support the trigger rod 31 and make a conical surface 311 on the trigger rod 31 abut against the transmission member 20. In this way, the elastic support of the first elastic member 101 to the trigger rod 31 can always keep the transmission connection state between the trigger rod 31 and the transmission member 20, so that the shaking amount caused by the existence of structural errors and assembly errors when the trigger rod 31 and the transmission member 20 are assembled can be eliminated. Here, the number of the first elastic members 101 is one or more.

In an embodiment, the circuit board 40 may be integrated with a signal sensor (not shown) at a position where the first elastic member 101 is located, so that when the trigger lever 31 is pressed in the Z-axis direction, the trigger lever 31 triggers the signal sensor through the first elastic member 101 and causes the circuit board 40 to generate a feedback signal. In this way, the micro-travel switch 100 can add a pressing function in the Z-axis direction, such as: the pressing function may be applied as a confirm key, a set key, or the like.

As shown in fig. 1, in an embodiment, the triggering assembly 30 further includes a key 32, where the key 32 is disposed on a side of the housing 10 away from the transmission member 20 and is in driving connection with the triggering lever 31, and the key 32 can drive the transmission member 20 to swing through the triggering lever 31. Thus, the hand can trigger the micro-travel switch 100 by pressing the key 32, so that the hand can trigger the micro-travel switch 100 conveniently. Here, the trigger lever 31 and the key 32 are connected together by ultrasonic welding, screwing or snap-fitting.

As shown in fig. 2 to 4, in one embodiment, the key 32 is configured as a conductive member; the circuit board 40 is also integrated with a sensing contact 42, and the sensing contact 42 is electrically connected with the key 32 for controlling the opening/closing of the circuit board 40. Here, the key 32 and the sensing contact 42 on the circuit board 40 can be electrically connected through the spring 401, wherein, one end of the spring 401 far away from the sensing contact 42 on the circuit board 40 is fixedly connected with the key 32, thus, the connection between the spring 401 and the key 32 can not influence the movement of the key 32 on the housing 10 by utilizing the structural characteristic that the spring 401 can be bent and deformed; a close-range induction technology can be specifically used between the key 32 and the induction contact 42 on the circuit board 40, and when the circuit board 40 detects that the key 32 is pressed by a human hand, the circuit board 40 can be controlled to be opened, so that the circuit board 40 can correspondingly generate a feedback signal through the signal sensor 41 triggered on the circuit board 40; when the circuit board 40 detects that the pressing key 32 is a non-human hand, the circuit board 40 can be controlled to be closed, so that even if the signal sensor 41 on the circuit board 40 is triggered, the circuit board 40 can not generate a feedback signal, and the micro-travel switch 100 can have the function of preventing the non-human hand from touching by mistake. Of course, the key 32 and the sensing contact 42 on the circuit board 40 can be electrically connected by a wire. It should be noted that, the working principle of how the circuit board 40 realizes the function of the key 32 that the user does not touch by hand by the sensing contact 42 and the key 32 can be adopted in a conventional manner, which is not described herein.

As shown in fig. 1 to 4, in an embodiment, the micro-travel switch 100 further includes a base 50, and the circuit board 40 is mounted on the base 50; the circuit board 40 can be structurally supported by the base 50 in both the region where the second elastic member 102 is located and the region where the signal sensor 41 is located, so that the circuit board 40 can be prevented from being deformed due to compression, and the stability of signal transmission during operation of the circuit board 40 is ensured. Here, the base 50 and the housing 10 may be detachably connected by a screw 60, and together form a housing structure of the micro-travel switch 100, where the base 50 is formed with a boss 51, and the boss 51 abuts against a region of the circuit board 40 where the second elastic member 102 is located and a portion of the signal sensor 41, so as to realize structural support.

In addition, the application also provides an automobile comprising the micro-travel switch 100.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be determined from the following claims.

Claims

1. A micro-travel switch, characterized in that the micro-travel switch (100) comprises:

A housing (10) having an arcuate surface (11);

The transmission piece (20) comprises a connecting sphere (21) and a plurality of trigger plates (22), wherein the connecting sphere (21) is partially clamped on the arc-shaped surface (11) and is rotationally connected with the shell (10), and the plurality of trigger plates (22) are arranged at intervals along the circumferential direction of the connecting sphere (21);

The trigger assembly (30) is at least partially arranged on the outer side of the shell (10) and is in transmission connection with the transmission piece (20);

a circuit board (40) integrated with a plurality of signal sensors (41), wherein the signal sensors (41) are in one-to-one correspondence with the trigger plates (22);

When the transmission piece (20) swings relative to the shell (10) through the connecting sphere (21) under the driving of the triggering assembly (30), at least one signal sensor (41) of the plurality of signal sensors (41) can be triggered by the corresponding triggering plate (22), and the circuit board (40) generates a feedback signal;

The trigger assembly (30) comprises a trigger rod (31), the trigger rod (31) penetrates through the connecting sphere (21) and is in transmission connection with the transmission piece (20), and the transmission piece (20) can swing under the driving of the trigger rod (31);

The shell (10) is provided with a through hole (12) at the position of the arc-shaped surface (11), the trigger rod (31) penetrates through the through hole (12), and the aperture of the through hole (12) is larger than the outer diameter of the part, located in the through hole (12), of the trigger rod (31);

The trigger rod (31) is provided with a conical surface (311), the conical surface (311) is abutted to the transmission piece (20), and the trigger rod (31) can drive the transmission piece (20) through the conical surface (311);

Wherein the outer diameter of the conical surface (311) gradually increases towards the circuit board (40);

A first elastic element (101) is arranged between the trigger rod (31) and the circuit board (40) in a precompression mode, and the first elastic element (101) can support the trigger rod (31) and enable a conical surface (311) on the trigger rod (31) to be abutted to the transmission element (20).

2. The micro-travel switch according to claim 1, wherein the trigger assembly (30) further comprises a key (32), the key (32) is arranged on the side of the housing (10) away from the transmission member (20) and is in transmission connection with the trigger lever (31), and the key (32) can drive the transmission member (20) to swing through the trigger lever (31).

3. The micro-travel switch according to claim 2, wherein the key (32) is configured as a conductive member;

And the circuit board (40) is also integrated with an inductive contact (42), and the inductive contact (42) is electrically connected with the key (32) and is used for controlling the opening/closing of the circuit board (40).

4. The micro-travel switch according to claim 1, wherein a plurality of the trigger plates (22) and the circuit board (40) are respectively provided with second elastic members (102) in a precompressed manner, and the plurality of the second elastic members (102) are mutually matched and jointly used for supporting the transmission member (20) and enabling the connecting sphere (21) to be clamped on the arc-shaped surface (11).

5. The micro-travel switch according to claim 4, wherein the micro-travel switch (100) further comprises a base (50), the wiring board (40) being mounted on the base (50);

The circuit board (40) can be structurally supported by the base (50) in both the area where the second elastic piece (102) is located and the area where the signal sensor (41) is located.

6. The micro-travel switch according to claim 1, wherein the number of trigger plates (22) is configured to be four, and four trigger plates (22) are arranged symmetrically two by two.

7. An automobile characterized by comprising a micro-travel switch (100) according to any one of claims 1 to 6.