Non-contact automobile combination switch function structure

Abstract

The utility model discloses a kind of non-contact automobile combination switch function structures, belong to automobile electronic control component technical field.The structure includes base, printed circuit board, handle, pivot mechanism, magnet and hall sensor;The printed circuit board is fixed on base and is equipped with hall sensor;The handle is rotatably supported by pivot mechanism, and its front end is equipped with magnet mounting portion, and magnet is fixed in this mounting portion;The non-contact working air gap of 1mm~10mm is kept between the magnet and hall sensor.When handle rotates, magnet moves along arc trajectory, and hall sensor detects magnetic field change and outputs electrical signal, to realize multi-gear function identification such as turn signal, lane change light, overtaking light and dimmer etc.This utility model completely eliminates the physical wear and tear of traditional mechanical contact type structure, low-temperature lubrication failure, operation noise and poor hand feeling etc.Problems, with long life, good environmental adaptability, operation sensitive and reliable, simple structure and other advantages, significantly improve the comprehensive performance and user experience of automobile combination switch.

Description

Technical Field

[0001] This utility model relates to the field of automotive electronic control components technology, specifically to a non-contact automotive combination switch functional structure. Background Technology

[0002] The automotive combination switch is a core operating component for drivers to control vehicle lighting functions such as turn signals, lane change signals, high / low beam switching, and overtaking light warnings. Its reliability, ease of operation, and lifespan directly affect driving safety and user experience. Currently, most mainstream combination switch function switching modules adopt a mechanical contact structure.

[0003] Specifically, the traditional technical solution involves operating a handle to drive a metal contact plate or slider mechanism, which makes it physically contact the gold fingers (gold-plated copper foil) preset on the printed circuit board assembly. Different circuit loops are connected or switched through sliding friction, thereby realizing the functions of left turn signal, left turn lane change signal, right turn signal, right turn lane change signal, overtaking light, and dimming.

[0004] However, this existing technical solution has the following significant defects and technical shortcomings: Mechanical wear shortens lifespan: To ensure reliable electrical contact, the contact piece must maintain a certain contact pressure on the gold finger, resulting in significant friction during operation. Over time, continuous mechanical friction between the contact piece and the gold finger causes material wear, increasing contact resistance, affecting signal stability, and even causing functional failure, severely limiting the overall lifespan of the switch.

[0005] Poor contact reliability in low-temperature environments: To reduce mechanical wear, special electrical contact grease is usually applied to the surface of the gold fingers. However, in low-temperature operating conditions (such as -40℃ and below), the grease is prone to solidification or a sharp increase in viscosity, resulting in a significant increase in operating force. Due to the increased viscosity caused by grease solidification, it may even separate the contact between the contact piece and the gold fingers, leading to poor contact or complete functional failure, making it difficult to meet the reliable operation requirements of vehicles in cold regions.

[0006] Poor handling feel and noise issues: The inherent sliding friction of the physical contact structure not only generates unpleasant friction noise, but also leads to large fluctuations in operating force and a stiff feel, which seriously affects the driver's handling experience and the sense of product quality.

[0007] Structural complexity and maintenance difficulties: Traditional contact structures have extremely high requirements for the machining accuracy, surface treatment and assembly process of parts, and the contact reliability gradually decreases with the extension of service time, resulting in high maintenance and replacement costs.

[0008] Therefore, there is an urgent need for a new type of automotive combination switch structure to fundamentally solve the problems of severe wear, poor low-temperature adaptability, poor operating feel and obvious noise caused by the above-mentioned mechanical contact structure, thereby significantly improving the overall reliability, environmental adaptability and user experience of the product. Utility Model Content

[0009] The technical problem to be solved by this utility model is to provide a non-contact automotive combination switch functional structure.

[0010] The technical solution adopted by this application to solve its technical problem is: a non-contact automotive combination switch functional structure, comprising: a base; a printed circuit board fixed on the base, the printed circuit board having at least one Hall sensor; a handle rotatably supported by a rotating shaft mechanism, the front end of the handle having a magnet mounting portion; at least one magnet fixed to the magnet mounting portion; a working air gap with no physical contact between the magnet and the Hall sensor; and the magnet moving along an arc-shaped trajectory when the handle rotates around the rotating shaft mechanism.

[0011] Furthermore, the magnet mounting part is a groove or claw provided at the front end of the handle, and the magnet is fixed in the groove or claw by interference fit.

[0012] Furthermore, the base is provided with positioning posts, and the printed circuit board is provided with corresponding positioning holes. The positioning posts and positioning holes cooperate to achieve precise positioning of the printed circuit board.

[0013] Furthermore, the printed circuit board is fixed to the base by screws or a snap-fit ​​structure.

[0014] Furthermore, the multiple preset gear positions on the arc-shaped trajectory include the left turn signal, the left turn lane change signal gear position, the right turn signal, the right turn lane change signal gear position, the overtaking light gear position, and the dimming gear position. Each gear position corresponds to a magnetic flux change threshold of the Hall sensor.

[0015] Furthermore, the magnetic poles of the magnet are arranged parallel to or perpendicular to the sensing surface of the Hall sensor to adjust the change in magnetic flux density.

[0016] Furthermore, the working air gap is 1mm to 10mm.

[0017] Furthermore, the axis of the rotating shaft is parallel to the plane of motion of the magnet.

[0018] The non-contact automotive combination switch functional structure provided by this utility model has the following beneficial effects: It fundamentally eliminates mechanical wear and greatly extends service life: Since there is no physical contact between the magnet and the Hall sensor, it completely avoids the material wear problem caused by sliding friction between the traditional contact piece and the gold finger, thereby greatly improving the mechanical life and reliability of the combination switch.

[0019] Excellent environmental adaptability, especially overcoming the problem of low-temperature failure: The non-contact sensing method does not require the use of lubricating grease, which completely solves the problems of poor contact, increased operating force and even functional failure caused by the solidification of grease at low temperatures, and meets the usage requirements under various harsh climate conditions around the world.

[0020] The smooth and quiet operation enhances the user experience: by eliminating the sliding friction pair, there is no friction noise when operating the handle, and the operating force is uniform and the feel is light and smooth, which significantly improves the driver's control quality and overall user experience.

[0021] Simplified structure and enhanced reliability: The complex contact plate structure and lubrication process are eliminated, simplifying the assembly process, reducing the requirements for part machining accuracy and failure rate, while the magnetic induction signal output is stable and has strong anti-interference ability, further ensuring the accuracy and reliability of function execution.

[0022] In summary, this invention effectively overcomes the inherent defects of traditional mechanical contact combination switches in terms of lifespan, low-temperature performance, feel, and noise, and provides a solution with higher reliability, better environmental adaptability, and a better user experience. Attached Figure Description

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the functional structure of the non-contact automotive combination switch of this utility model. Detailed Implementation

[0024] Explanation of reference numerals in the attached drawings: 1. Handle; 2. Base; 3. Printed circuit board; 4. Hall sensor; 5. Magnet mounting part; 6. Magnet.

[0025] Implementation, for example Figure 1As shown, this utility model provides a non-contact automotive combination switch functional structure, including: a base 2; a printed circuit board 3 fixed on the base 2, the printed circuit board 3 having at least one Hall sensor 4; a handle rotatably supported by a rotating shaft mechanism, the front end of the handle 1 having a magnet mounting portion 5; at least one magnet 6 fixed to the magnet mounting portion 5; a non-physical contact working air gap between the magnet 6 and the Hall sensor 4; when the handle 1 rotates around the rotating shaft mechanism, the magnet 6 moves along an arc-shaped trajectory. This technical solution enables the switch to achieve a completely non-contact sensing method, fundamentally eliminating the risk of mechanical wear and poor contact, and significantly improving the reliability and service life of the switch.

[0026] Preferably, the magnet mounting part 5 is a groove or claw located at the front end of the handle 1, and the magnet 6 is fixed in the groove or claw by an interference fit. This technical solution ensures that the magnet 6 is securely and reliably installed, effectively preventing it from loosening or falling off during frequent rotation of the handle 1, and guaranteeing the long-term stability of signal sensing.

[0027] Preferably, the base 2 is provided with positioning posts, and the printed circuit board 3 is provided with corresponding positioning holes. The positioning posts and positioning holes cooperate to achieve precise positioning of the printed circuit board 3. The above technical solution enables the printed circuit board 3 to be quickly and accurately positioned on the base 2, simplifies the assembly process, ensures the consistency of the relative positions between the Hall sensor 4 and the magnet 6, and thus guarantees detection accuracy.

[0028] Preferably, the printed circuit board 3 is fixed to the base 2 by screws or a snap-fit ​​structure. This technical solution provides a simple and reliable fixing method, ensuring the connection strength of the printed circuit board 3 under vibration conditions while facilitating subsequent maintenance and replacement.

[0029] Preferably, the multiple preset positions on the arc-shaped trajectory include positions for the left turn signal, left turn lane change signal, right turn signal, right turn lane change signal, overtaking light, and dimming light, with each position corresponding to a magnetic flux change threshold of the Hall sensor 4. This technical solution enables a single switch structure to achieve multiple different control functions through changes in the position of the magnet 6, meeting the multi-functional and integrated application requirements of automotive combination switches.

[0030] Preferably, the magnetic poles of the magnet 6 are arranged parallel to or perpendicular to the sensing surface of the Hall sensor 4 to adjust the change in magnetic flux density. The above technical solution provides flexible magnetic circuit design options, allowing for optimization of the sensor arrangement based on different spatial layouts and signal strength requirements to obtain optimal signal output characteristics.

[0031] Preferably, the working air gap is 1mm to 10mm. The above technical solution defines an effective and reliable working distance range, which ensures sufficient signal strength for accurate identification by the Hall sensor 4, and provides reasonable tolerance for product assembly and structural tolerances.

[0032] Preferably, the axis of the rotating shaft is parallel to the plane of motion of the magnet 6. This technical solution ensures that the magnet 6 can move in an arc around the rotating shaft within a stable plane, allowing the Hall sensor 4 to detect regular and consistent magnetic field changes, thereby outputting an accurate and linear gear signal. When the operator moves the handle 1, the handle 1 rotates around the rotating shaft mechanism, causing the magnet 6, fixed to its front end, to move along an arc-shaped trajectory. The Hall sensor 4 is fixed to the printed circuit board 3 and maintains a constant non-contact working air gap with the magnet 6. When the magnet 6 moves to different preset gears (such as turn signal, lane change signal, overtaking light, and high beam), the change in its spatial position causes a change in the surrounding magnetic field strength. This change is captured by the Hall sensor 4 and converted into a corresponding electrical signal. This electrical signal is transmitted to the vehicle's control system, ultimately achieving precise control of vehicle functions such as turn signals, lane change signals, high beams, and overtaking lights. The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The protection scope of the present invention shall be determined by the scope defined in the claims.

Claims

1. A non-contact automotive combination switch functional structure, characterized in that, include: Base; A printed circuit board fixed on the base, the printed circuit board having at least one Hall sensor; a handle rotatably supported by a rotating shaft mechanism, the front end of the handle having a magnet mounting portion; at least one magnet fixed to the magnet mounting portion; the magnet and the Hall sensor having a non-physical contact working air gap, forming a magnetic induction coupling pair; when the handle rotates around the rotating shaft mechanism, the magnet moves along an arc trajectory, passing through multiple preset gear positions, to realize the functions of left turn signal, left turn lane change signal, right turn signal, right turn lane change signal, overtaking signal, and dimming function.

2. The non-contact automotive combination switch functional structure according to claim 1, characterized in that: The magnet mounting part is a groove or claw located at the front end of the handle, and the magnet is fixed in the groove or claw by an interference fit.

3. The non-contact automotive combination switch functional structure according to claim 2, characterized in that: The base is provided with positioning posts, and the printed circuit board is provided with corresponding positioning holes. The positioning posts and positioning holes cooperate to achieve precise positioning of the printed circuit board.

4. The non-contact automotive combination switch functional structure according to claim 3, characterized in that: The printed circuit board is fixed to the base by screws or a snap-fit ​​structure.

5. The non-contact automotive combination switch functional structure according to claim 4, characterized in that: The multiple preset gear positions on the arc-shaped trajectory include the left turn signal, the left turn lane change signal gear position, the right turn signal, the right turn lane change signal gear position, the overtaking light gear position, and the dimming gear position. Each gear position corresponds to a magnetic flux change threshold of the Hall sensor.

6. The non-contact automotive combination switch functional structure according to claim 5, characterized in that: The magnetic poles of the magnet are arranged parallel to or perpendicular to the sensing surface of the Hall sensor to adjust the change in magnetic flux density.

7. The non-contact automotive combination switch functional structure according to claim 6, characterized in that: The working air gap is 1mm to 10mm.

8. The non-contact automotive combination switch functional structure according to claim 7, characterized in that: The axis of the rotating shaft is parallel to the plane of motion of the magnet.

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