Multifunction integrated electronic switch structure for automobile steering wheel

Abstract

This utility model relates to the field of automotive electronics technology and discloses a multifunctional integrated automotive steering wheel electronic switch structure, including a bracket. A mounting shell is fixedly connected to the inner wall of the bracket. A heat dissipation mechanism is provided on the inner wall of the mounting shell. An inspection cover is rotatably connected to the bottom of the inner wall of the mounting shell. A sealing and protective mechanism is provided on the outer wall of the inspection cover. A heating mechanism is provided on the outer wall of the bracket. A moisture-proof mechanism is provided on the inner wall of the mounting shell. A safety protection mechanism is provided on the top of the mounting shell. The heat dissipation mechanism includes a heat spreader plate, the top of which is fixedly connected to the top of the inner wall of the mounting shell. In this utility model, the heat of the control chip is quickly transferred through the heat spreader plate and graphene plate. The shape memory alloy strip contracts upon heating, increasing the area of ​​the heat dissipation holes. The cooling fan then accelerates the airflow, ensuring stable chip operation and extending the switch's lifespan.

Description

Technical Field

[0001] This utility model relates to the field of automotive electronics technology, and in particular to a multifunctional integrated electronic switch structure for automotive steering wheels. Background Technology

[0002] The car steering wheel is a control device in the cockpit used to control the direction of the vehicle. Its core structure consists of a circular hub, spokes, and a multi-function button area. As automobiles have developed, their functions have continued to expand, and the important carrier for realizing the integration of these expanded functions is the multi-function integrated electronic switch structure of the car steering wheel.

[0003] The multi-functional integrated electronic switch structure for car steering wheels breaks the limitations of the single steering control of car steering wheels. It cleverly integrates the function control buttons for audio adjustment, Bluetooth calling, and vehicle auxiliary operation on the steering wheel. Through circuit design and signal transmission, the driver can realize the corresponding function with a light touch of the button.

[0004] Although the multi-functional integrated electronic switch structure of the car steering wheel greatly improves driving safety and convenience, the integrated module contains dense electronic components and insufficient heat dissipation space. Prolonged use will cause overheating, leading to chip or circuit board aging, which in turn will cause intermittent failures or functional failures. Especially in high-temperature environments, the existing solutions are to add thermal conductive silicone pads to the circuit board or design a hollow structure to enhance air convection and use low-power chips to reduce heat generation. However, the heat dissipation structure will increase the module size, which contradicts the lightweight design of the steering wheel. Furthermore, the high temperature inside the car after being exposed to the sun will still cause the chip to overheat. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a multi-functional integrated electronic switch structure for automotive steering wheels, aiming to improve the existing technology where heat dissipation structures increase module size and cannot completely solve the problem of chip overheating.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a multifunctional integrated automotive steering wheel electronic switch structure, including a bracket, a mounting shell fixedly connected to the inner wall of the bracket, a heat dissipation mechanism provided on the inner wall of the mounting shell, a maintenance cover rotatably connected to the bottom of the inner wall of the mounting shell, a sealing and protective mechanism provided on the outer wall of the maintenance cover, a heating mechanism provided on the outer wall of the bracket, a moisture-proof mechanism provided on the inner wall of the mounting shell, and a safety protection mechanism provided on the top of the mounting shell; the heat dissipation mechanism includes a heat spreader plate, the top of the heat spreader plate fixedly connected to the top of the inner wall of the mounting shell, a graphene plate fixedly connected to the bottom of the heat spreader plate, a control chip fixedly connected to the bottom of the graphene plate, a micro liquid cooling pipe fixedly connected to the bottom of the control chip, two heat dissipation holes opened on the outer wall of the maintenance cover, a cooling fan fixedly connected to the top of the inner wall of each of the two heat dissipation holes, shape memory alloy strips fixedly connected to the left and right sides of the top of the maintenance cover, wind deflectors fixedly connected to the rear sides of each of the two shape memory alloy strips, and an airflow guiding component provided on the top of the maintenance cover.

[0007] As a further description of the above technical solution:

[0008] The sealing and protective mechanism includes two filter screens, the outer walls of which are fixedly connected to the inner walls of two heat dissipation holes, and sealing rings fixedly connected to the outer walls of which are both filter screens. Vibrators are fixedly connected to the top of which are both filter screens, and waterproof and breathable membranes are fixedly connected to the inner walls of which are both heat dissipation holes. An electrostatic emitter is fixedly connected to the front side of the inner wall of the mounting shell, and a dust collection rod is fixedly connected to the rear side of the electrostatic emitter.

[0009] As a further description of the above technical solution:

[0010] The heating mechanism includes multiple temperature sensors, the bottoms of which are fixedly connected to the top of the outer wall of the bracket, and a heating wire is fixedly connected to the outer wall of the bracket.

[0011] As a further description of the above technical solution:

[0012] The moisture-proof mechanism includes a fixing box, the front side of which is fixedly connected to the front side of the inner wall of the mounting shell, a humidity sensor is fixedly connected to the rear side of the fixing box, and a water-absorbing plate is slidably connected to the inner wall of the fixing box.

[0013] As a further description of the above technical solution:

[0014] The safety mechanism includes an airbag, the bottom of which is fixedly connected to the top of the mounting shell, and the top of the mounting shell is provided with a protective groove.

[0015] As a further description of the above technical solution:

[0016] The airflow guiding assembly includes two micro stepper motors, the bottoms of which are fixedly connected to the top of the inspection cover, and the output ends of which are fixedly connected to air guide plates.

[0017] As a further description of the above technical solution:

[0018] An alarm is fixedly connected to the bottom left side of the bracket, and a status indicator light is fixedly connected to the bottom right side of the bracket.

[0019] As a further description of the above technical solution:

[0020] An installation cylinder is fixedly connected to the middle of the inner wall of the mounting shell, and multiple anti-slip sleeves are fixedly connected to the outer wall of the bracket.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the heat dissipated by the control chip is quickly transferred through the heat dissipation plate and graphene plate. At the same time, the shape memory alloy strip shrinks due to heat, increasing the exposed area of ​​the heat dissipation holes. Then, the cooling fan is started to accelerate the air flow speed, improve the heat conduction and diffusion efficiency, effectively ensure the stable operation of the control chip, and extend the service life of the switch.

[0023] 2. In this utility model, large particulate impurities are first intercepted by a filter screen, while the silicone sealing ring seals the gaps in the heat dissipation holes to prevent dust from entering the mounting shell. The waterproof and breathable membrane only allows air to enter and intercepts moisture in the air. The filter screen is cleaned regularly by an electromagnetic vibrator. Finally, the stainless steel dust collection rod adsorbs impurities in the air through electrostatic adsorption. This device improves the protection level while ensuring heat dissipation efficiency, effectively resists the intrusion of dust and moisture, and significantly extends the service life of the control chip. Attached Figure Description

[0024] Figure 1 A perspective view of a multifunctional integrated electronic switch structure for an automotive steering wheel proposed in this utility model;

[0025] Figure 2 This is a front view of a multifunctional integrated electronic switch structure for automotive steering wheels proposed in this utility model;

[0026] Figure 3 This is a cross-sectional view of a bracket for a multifunctional integrated electronic switch structure for an automotive steering wheel proposed in this utility model.

[0027] Figure 4 This is an exploded view of the heat dissipation mechanism of a multifunctional integrated automotive steering wheel electronic switch structure proposed in this utility model;

[0028] Figure 5 This is a cross-sectional view of the mounting housing of a multifunctional integrated automotive steering wheel electronic switch structure proposed in this utility model.

[0029] Figure 6 This is an exploded view of the sealing and protection mechanism of a multifunctional integrated automotive steering wheel electronic switch structure proposed in this utility model.

[0030] Legend:

[0031] 1. Bracket; 2. Mounting housing; 3. Heat dissipation mechanism; 301. Heat spreader; 302. Graphene plate; 303. Control chip; 304. Miniature liquid cooling pipe; 305. Heat dissipation holes; 306. Cooling fan; 307. Shape memory alloy strip; 308. Baffle; 309. Airflow guiding assembly; 3091. Miniature stepper motor; 3092. Air guide plate; 4. Inspection cover; 5. Sealing and protection mechanism; 501. Filter screen; 502. Seal 503. Vibrator; 504. Waterproof and breathable membrane; 505. Static electricity emitter; 506. Dust collection rod; 6. Heating mechanism; 601. Temperature sensor; 602. Heating wire; 7. Moisture-proof mechanism; 701. Humidity sensor; 702. Fixing box; 703. Water absorption plate; 8. Safety protection mechanism; 801. Protective groove; 802. Safety airbag; 9. Alarm; 10. Status indicator light; 11. Mounting cylinder; 12. Anti-slip sleeve. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 2 , Figure 4 and Figure 6This utility model provides an embodiment of a multi-functional integrated automotive steering wheel electronic switch structure, including a bracket 1. A mounting shell 2 is fixedly connected to the inner wall of the bracket 1, serving as the multi-functional button area of ​​the steering wheel. A heat dissipation mechanism 3 is provided on the inner wall of the mounting shell 2. A maintenance cover 4 is rotatably connected to the bottom of the inner wall of the mounting shell 2, allowing for the inspection of components within the device. A sealing and protective mechanism 5 is provided on the outer wall of the maintenance cover 4. A heating mechanism 6 is provided on the outer wall of the bracket 1. A moisture-proof mechanism 7 is provided on the inner wall of the mounting shell 2. The top of the mounting shell 2... A safety protection mechanism 8 is provided; the heat dissipation mechanism 3 includes a heat spreader 301, which is used to evenly dissipate heat. The top of the heat spreader 301 is fixedly connected to the top of the inner wall of the mounting shell 2, and the bottom of the heat spreader 301 is fixedly connected to a graphene plate 302, which is used to accelerate heat dissipation. The bottom of the graphene plate 302 is fixedly connected to a control chip 303, which acts as a converter for various functions within the control device and generates a large amount of heat. The bottom of the control chip 303 is fixedly connected to a miniature liquid cooling pipe 304, through which heat is dissipated. 304 facilitates heat exchange with the control chip 303. Two heat dissipation holes 305 are formed on the outer wall of the inspection cover 4, allowing cool outside air to enter the mounting housing 2. Cooling fans 306 are fixedly connected to the top of the inner walls of each of the two heat dissipation holes 305 to accelerate heat dissipation. Shape memory alloy strips 307 are fixedly connected to the left and right sides of the top of the inspection cover 4. These strips can contract when hot and straighten when cold. Wind deflectors 308 are fixedly connected to the rear sides of each of the two shape memory alloy strips 307. The baffle plate 308 controls the heat dissipation hole 305 to block the airflow. The top of the inspection cover 4 is provided with an airflow guiding component 309, which includes two micro stepper motors 3091. The micro stepper motors 3091 are used to control the air guide plate 3092 to make precise turns. The bottom of the two micro stepper motors 3091 is fixedly connected to the top of the inspection cover 4. The output end of the two micro stepper motors 3091 is fixedly connected to the air guide plate 3092. The air blown into the mounting shell 2 is precisely blown to the high heat area through the air guide plate 3092.

[0034] Specifically, the control chip 303, as the core heat source, generates a large amount of heat during operation. When the internal temperature of the mounting shell 2 rises, the cooling fan 306 is activated, drawing in cool outside air through one heat dissipation hole 305. The heat generated by the control chip 303 is transferred through the graphene plate 302 and the heat spreader 301, and then discharged through another heat dissipation hole 305. At the same time, the shape memory alloy strip 307 contracts due to the increased temperature, causing the baffle plate 308 to move forward, expanding the opening area of ​​the heat dissipation hole 305 and increasing the air intake. The air guide plate is driven by the micro stepper motor 3091. 3092 adjusts the angle to ensure that the cold air is precisely blown to the high-heat areas of the control chip 303 and the micro liquid cooling pipe 304, avoiding ineffective airflow loss. When the temperature drops or the vehicle is turned off, the cooling fan 306 stops running, the shape memory alloy strip 307 returns to its straight state, pushes the baffle 308 to block the heat dissipation hole 305, preventing dust and moisture from entering the interior of the mounting housing 2 through the hole, and the airflow guide component 309 returns to its initial position to reduce airflow resistance. When it is necessary to inspect the internal components, the inspection cover 4 is manually opened to expose the component mounting area at the bottom of the mounting housing 2 for repair.

[0035] Reference Figure 4 , Figure 5 and Figure 6 The sealing and protective mechanism 5 includes two filters 501, which are used to filter impurities in the air. The outer walls of the two filters 501 are fixedly connected to the inner walls of the two heat dissipation holes 305. The outer walls of the two filters 501 are fixedly connected to sealing rings 502, which are used to prevent impurities from entering through gaps. The tops of the two filters 501 are fixedly connected to vibrators 503, which cause impurities on the filters 501 to fall off. The inner walls of the two heat dissipation holes 305 are fixedly connected to waterproof and breathable membranes 504, which are used to increase the interception of impurities. The front side of the inner wall of the mounting shell 2 is fixedly connected to an electrostatic emitter 505, which is used to provide static electricity to the dust collection rod 506. The rear side of the electrostatic emitter 505 is fixedly connected to the dust collection rod 506, which adsorbs the impurities remaining in the mounting shell 2 through the electrostatically charged dust collection rod 506.

[0036] Specifically, when air enters through the heat dissipation hole 305, the filter screen 501 first intercepts large particles of impurities. The sealing ring 502 on the outside of the filter screen 501 fills the gaps in the inner wall of the heat dissipation hole 305 to prevent impurities from entering the mounting housing 2 from the edge. When too much dust accumulates on the filter screen 501, the vibrator 503 is activated periodically to dislodge the dust through high-frequency vibration. At the same time, the waterproof and breathable membrane 504 can block liquid water and small particles, but allows air to pass through. When a small amount of impurities bypass the filter screen 501, the sealing ring 502, and the waterproof and breathable membrane 504 and enter the mounting housing 2, the electrostatic emitter 505 applies a high-voltage current to the dust collection rod 506, causing the dust collection rod 506 to become electrostatically charged and adsorb residual dust, forming multiple layers of protection to ensure that the internal components are not contaminated.

[0037] Reference Figure 1 , Figure 2 and Figure 3 The heating mechanism 6 includes multiple temperature sensors 601, which are used to detect the temperature of the outer wall of the bracket 1. The bottom of each temperature sensor 601 is fixedly connected to the top of the outer wall of the bracket 1. A heating wire 602 is fixedly connected to the outer wall of the bracket 1, which provides slight heating to the bracket 1, increasing user comfort in cold seasons. The moisture-proof mechanism 7 includes a fixing box 702, which supports a water-absorbing plate 703. The front of the fixing box 702 is fixedly connected to the front of the inner wall of the mounting shell 2. A humidity sensor 701 is fixedly connected to the rear of the fixing box 702, which detects the humidity inside the mounting shell 2. The water-absorbing plate 703 is slidably connected to the inner wall of the fixing box 702. The water-absorbing plate 703 absorbs moisture from the air. The safety mechanism 8 includes an airbag 802, which can quickly inflate and protect the user in case of danger. The bottom of the airbag 802 is fixedly connected to the top of the mounting shell 2. The top of the mounting shell 2 has a protective groove 801. An alarm 9 is fixedly connected to the bottom left side of the bracket 1. The alarm 9 can sound an alarm when the temperature is too high. A status indicator light 10 is fixedly connected to the bottom right side of the bracket 1. The status indicator light 10 can display the temperature status inside the mounting shell 2. An installation cylinder 11 is fixedly connected to the middle of the inner wall of the mounting shell 2. The installation cylinder 11 facilitates fixing the device to the car. Multiple anti-slip sleeves 12 are fixedly connected to the outer wall of the bracket 1. The anti-slip sleeves 12 can prevent the user's hand from slipping when using it.

[0038] Specifically, during device operation, the temperature sensor 601 monitors the temperature of the outer wall of the bracket 1 in real time. When the temperature is detected to be too low, the heating wire 602 is activated to slightly heat the bracket 1, improving the user's grip comfort. The humidity sensor 701 continuously monitors the humidity inside the mounting shell 2. When the humidity exceeds the standard, the water absorption plate 703 absorbs moisture to maintain a dry internal environment. When the user encounters danger while driving, the airbag 802 quickly inflates and deploys from the protective slot 801 to protect the user. When the temperature sensor 601 detects an excessively high temperature, the alarm 9 sounds an alarm, and the status indicator light 10 flashes simultaneously. The mounting sleeve 11 ensures the device is securely installed, and the anti-slip sleeve 12 ensures that the user does not slip when gripping the device and can be removed for cleaning when it gets dirty.

[0039] Working principle: The control chip 303 is the core heat source. When the control chip 303 generates heat, the temperature inside the mounting shell 2 rises, the cooling fan 306 starts, and cold air is drawn in from one heat dissipation hole 305. After the graphene plate 302 conducts heat quickly and the heat spreads evenly by the heat dissipation plate 301, the hot air is discharged from another heat dissipation hole 305. At the same time, the shape memory alloy strip 307 shrinks when heated, which drives the wind deflector 308 to move and expand the opening of the heat dissipation hole 305, increasing the air intake. The micro stepper motor 3091 drives the air guide plate 3092 to adjust the angle so that the cold air is precisely applied to the high heat area. When the temperature drops or the vehicle is turned off, the cooling fan 306 stops, the shape memory alloy strip 307 returns to its straight state, and the wind deflector 308 blocks the heat dissipation hole 305 to play a role in dust and water protection. The airflow guide component 309 is reset. When it is necessary to inspect the internal components of the device, the inspection cover 4 can be opened manually to access the internal components for maintenance.

[0040] Furthermore, when air enters the mounting housing 2 through the heat dissipation hole 305, large particles of impurities are first intercepted by the filter screen 501. The sealing ring 502 on the outside of the filter screen 501 is made of silicone material, which forms a physical barrier by filling the gaps in the inner wall of the heat dissipation hole 305, preventing impurities from flowing around and entering the mounting housing 2. When a large amount of dust accumulates on the filter screen 501, causing the wind resistance to increase, the vibrator 503 is activated to generate vibration, causing the dust to fall off due to inertia to achieve self-cleaning. Then, the hydrophobic coating on the surface of the waterproof and breathable membrane 504 causes liquid water in the air to form water droplets and slide off, while blocking small particles and only allowing air to pass through. When a very small amount of impurities still bypass the front defense, the electrostatic emitter 505 applies current to the dust collection rod 506, causing the dust collection rod 506 to adsorb dust particles. Through four layers of protection, while ensuring the flow of heat dissipation airflow, the protection level is improved, effectively dealing with dust and water vapor in the air, and ensuring the long-term stable operation of the control chip 303.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multifunctional integrated automotive steering wheel electronic switch structure, comprising a bracket (1), characterized in that: The bracket (1) is fixedly connected to the inner wall of the mounting shell (2), the inner wall of the mounting shell (2) is provided with a heat dissipation mechanism (3), the bottom of the inner wall of the mounting shell (2) is rotatably connected with an inspection cover (4), the outer wall of the inspection cover (4) is provided with a sealing and protection mechanism (5), the outer wall of the bracket (1) is provided with a heating mechanism (6), the inner wall of the mounting shell (2) is provided with a moisture-proof mechanism (7), and the top of the mounting shell (2) is provided with a safety protection mechanism (8). The heat dissipation mechanism (3) includes a heat spreader (301), the top of which is fixedly connected to the top of the inner wall of the mounting shell (2), a graphene plate (302) is fixedly connected to the bottom of the heat spreader (301), a control chip (303) is fixedly connected to the bottom of the graphene plate (302), a micro liquid cooling pipe (304) is fixedly connected to the bottom of the control chip (303), two heat dissipation holes (305) are opened on the outer wall of the inspection cover (4), a cooling fan (306) is fixedly connected to the top of the inner wall of the two heat dissipation holes (305), a shape memory alloy strip (307) is fixedly connected to the left and right sides of the top of the inspection cover (4), a baffle plate (308) is fixedly connected to the rear side of the two shape memory alloy strips (307), and an airflow guide component (309) is provided on the top of the inspection cover (4).

2. The multifunctional integrated automotive steering wheel electronic switch structure according to claim 1, characterized in that: The sealing and protective mechanism (5) includes two filter screens (501). The outer walls of the two filter screens (501) are fixedly connected to the inner walls of the two heat dissipation holes (305). The outer walls of the two filter screens (501) are fixedly connected to sealing rings (502). The tops of the two filter screens (501) are fixedly connected to vibrators (503). The inner walls of the two heat dissipation holes (305) are fixedly connected to waterproof and breathable membranes (504). The front side of the inner wall of the mounting shell (2) is fixedly connected to an electrostatic emitter (505). The rear side of the electrostatic emitter (505) is fixedly connected to a dust collection rod (506).

3. The multifunctional integrated automotive steering wheel electronic switch structure according to claim 1, characterized in that: The heating mechanism (6) includes multiple temperature sensors (601), the bottoms of which are fixedly connected to the top of the outer wall of the bracket (1), and a heating wire (602) is fixedly connected to the outer wall of the bracket (1).

4. The multifunctional integrated automotive steering wheel electronic switch structure according to claim 1, characterized in that: The moisture-proof mechanism (7) includes a fixed box (702), the front side of which is fixedly connected to the front side of the inner wall of the mounting shell (2), a humidity sensor (701) is fixedly connected to the rear side of the fixed box (702), and a water-absorbing plate (703) is slidably connected to the inner wall of the fixed box (702).

5. The multifunctional integrated automotive steering wheel electronic switch structure according to claim 1, characterized in that: The safety protection mechanism (8) includes an airbag (802), the bottom of which is fixedly connected to the top of the mounting shell (2), and the top of the mounting shell (2) is provided with a protective groove (801).

6. The multifunctional integrated automotive steering wheel electronic switch structure according to claim 1, characterized in that: The airflow guiding component (309) includes two micro stepper motors (3091), the bottom of which is fixedly connected to the top of the inspection cover (4), and the output end of which is fixedly connected to an air guide plate (3092).

7. The multifunctional integrated automotive steering wheel electronic switch structure according to claim 1, characterized in that: An alarm (9) is fixedly connected to the bottom left side of the bracket (1), and a status indicator light (10) is fixedly connected to the bottom right side of the bracket (1).

8. The multifunctional integrated automotive steering wheel electronic switch structure according to claim 1, characterized in that: The mounting shell (2) has a mounting cylinder (11) fixedly connected to the middle of its inner wall, and the bracket (1) has multiple anti-slip sleeves (12) fixedly connected to its outer wall.

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