阅读说明：本技术 一种汽车方向盘开关结构 (Automobile steering wheel switch structure ) 是由 王进丁 吴明华 *** 徐晖 于 2020-08-24 设计创作，主要内容包括：一种汽车方向盘开关结构,包括底座,底座上设置的线路板总成,套设在底座和线路板总成上的外壳,外壳上套设的面板,所述的外壳上通过孔轴配合设置有第一按钮、第二按钮、第三按钮和设置在第三按钮中部的拨钮,所述的第一按钮、第二按钮和第三按钮的底部两端均设置有压杆,所述的拨钮下方设置有两个顶杆；所述的线路板总成上对应压杆、顶杆的位置均设置有微动开关；所述的汽车方向盘开关结构中还设置有主动防水结构。本发明解决了传统的汽车方向盘开关零件多、功能少且占用空间较多,导致防水和很多其它功能难以布置的问题。(A kind of car steering wheel switch structure, including the base, the circuit board assembly set up on the base, the outer casing that is set up on base and circuit board assembly, the faceplate that is set up on the outer casing, there are first button, second button, third button and dial the button set up in the middle part of third button through the hole axle cooperation on the said outer casing, both ends of bottom of said first button, second button and third button have pressure levers, there are two knockout pins below the said dial button; micro switches are arranged on the circuit board assembly corresponding to the positions of the pressure lever and the ejector rod; the automobile steering wheel switch structure is also provided with an active waterproof structure. The invention solves the problems that the traditional automobile steering wheel switch has more parts, fewer functions and more occupied space, and causes water resistance and difficulty in arrangement of other functions.)

1. The automobile steering wheel switch structure comprises a base (1), a circuit board assembly (2) arranged on the base (1), a shell (3) sleeved on the base (1) and the circuit board assembly (2), and a panel (4) sleeved on the shell (3), and is characterized in that the shell (3) is provided with a first button (51), a second button (52), a third button (53) and a toggle button (54) arranged in the middle of the third button (53) in a hole shaft matching manner, two ends of the bottom of the first button (51), two ends of the bottom of the second button (52) and two ends of the bottom of the third button (53) are provided with pressure levers, and two ejector rods are arranged below the toggle button (54); micro switches are arranged on the circuit board assembly (2) corresponding to the positions of the pressure lever and the ejector rod;

the automobile steering wheel switch structure is also provided with an active waterproof structure, the active waterproof structure comprises a drainage inclined plane arranged on the inner side of the panel (4), a drainage inclined plane arranged on the inner side of the third button (53), a concave structure of the shell (3), a drainage groove (31) on the shell (3) corresponding to the lower position of the toggle button (54), a bulge (33) on the shell (3) corresponding to the lower position of the third button (53), a drainage hole (21) on the circuit board assembly (2), the concave structure of the base (1) and a drainage outlet (11) on the base (1); the drainage groove (31) penetrates through the drainage hole (21), and a drainage gap is formed between the circuit board assembly (2) and the base (1).

2. The switch structure of the steering wheel of the vehicle as claimed in claim 1, wherein the on stroke of the micro switch is 0.35 mm.

3. The switch structure of the steering wheel of the automobile as claimed in claim 1, wherein elastic pieces are arranged between the micro switch and the pressure lever and between the micro switch and the ejector rod, and the elastic pieces are fixedly connected to the shell (3).

4. The switch structure of the steering wheel of the automobile as claimed in claim 3, wherein the elastic sheet is fixedly connected to the housing (3) by riveting.

5. The switch structure of the steering wheel of the automobile as claimed in claim 3, wherein the thickness of the resilient plate is 0.2mm, and the resilient plate is made of high hardness stainless steel.

6. The automobile steering wheel switch structure according to any one of claims 3 to 5, wherein the elastic sheet is riveted, and the interference of 0.5mm is set with the first button (51), the second button (52), the third button (53) and the toggle button (54).

7. The switch structure of the steering wheel of the automobile as claimed in any one of claims 3 to 5, wherein the spring plate is riveted and assembled with the first button (51), the second button (52), the third button (53) and the toggle button (54), and then has a distance of 0.2mm from the micro switch.

8. The switch structure of the steering wheel of the automobile as claimed in claim 1, wherein the housing (3) is provided with a hollow convex column (32) adapted to the push rod at a position corresponding to the lower part of the toggle button (54).

Technical Field

The invention relates to the field of automobile switches, in particular to an automobile steering wheel switch structure.

Background

Along with the rapid development of automobile electronic technology, the integrated electrification function on the automobile is more and more, and the traditional automobile steering wheel switch is mostly PUSH buttons in the directions of miniaturization, low cost, multifunction and the like, so that the traditional automobile steering wheel switch has more parts, fewer functions and more occupied space, and particularly under the condition of high requirement on assembly space, a plurality of functions such as water resistance and the like are difficult to arrange. Therefore, the invention needs to provide a multifunctional automobile steering wheel switch structure with less parts, small volume, active water resistance and low production cost.

Disclosure of Invention

The invention aims to provide an automobile steering wheel switch structure, which solves the problems that the traditional automobile steering wheel switch has more parts, fewer functions and more occupied space, and the waterproof function and a plurality of other functions are difficult to arrange.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a kind of car steering wheel switch structure, including the base, the circuit board assembly set up on the base, the outer casing that is set up on base and circuit board assembly, the faceplate that is set up on the outer casing, there are first button, second button, third button and dial button set up in the middle part of third button through the hole axle cooperation on the said outer casing, the bottom both ends of the said first button, bottom both ends of the second button, bottom both ends of the third button have pressure levers, there are two knockout pins below the said dial button; micro switches are arranged on the circuit board assembly corresponding to the positions of the pressure lever and the ejector rod;

the automobile steering wheel switch structure is also provided with an active waterproof structure, wherein the active waterproof structure comprises a drainage inclined plane arranged on the inner side of the panel, a drainage inclined plane arranged on the inner side of the third button, a concave structure of the shell, a drainage groove on the shell corresponding to the position below the toggle button, a bulge on the shell corresponding to the position below the third button, a drainage hole on the circuit board assembly, a concave structure of the base and a drainage port on the base; the drainage groove penetrates through the drainage hole, and a drainage gap is formed between the circuit board assembly and the base.

Further, to compress the switch volume, the on stroke of the micro switch is 0.35 mm.

Furthermore, in order to avoid false triggering, elastic pieces are arranged between the micro switch and the pressure rod and between the micro switch and the ejector rod, and the elastic pieces are fixedly connected to the shell.

Furthermore, in order to reduce the number of parts and compress the volume of the switch, the elastic sheet is fixedly connected to the shell through riveting.

Furthermore, in order to compress the size of the switch and ensure the service life of the elastic sheet, the thickness of the elastic sheet is 0.2mm, and the elastic sheet is made of high-hardness stainless steel.

Further, in order to avoid the button and the toggle button from shaking after assembly, the elastic sheet is riveted and then is provided with the magnitude of interference of 0.5mm with the first button, the second button, the third button and the toggle button.

Furthermore, in order to avoid false triggering, the elastic sheet is riveted and assembled with the first button, the second button, the third button and the toggle button, and then has a distance of 0.2mm with the micro switch.

Furthermore, in order to prevent a small amount of water from flowing to the microswitch from a gap between the shell and the ejector rod, a hollow convex column matched with the ejector rod is arranged on the shell corresponding to the position below the toggle button.

The invention has the beneficial effects that: according to the invention, the elastic sheet riveted on the shell is matched with the low-stroke microswitch with a safety gap, so that the shaking of the control button can be controlled, the false triggering of a driver can be prevented, the active waterproof structure of the switch structure is skillfully utilized, the problem that the functions are difficult to arrange due to insufficient space of the steering wheel switch is fundamentally solved, and a new thought is provided for the subsequent miniaturization and multi-functionalization of the steering wheel switch.

The invention will be explained in more detail below with reference to the drawings and examples.

Drawings

Fig. 1 is a combined structure view of a steering wheel switch structure of an automobile according to the present invention.

Fig. 2 is a sectional view of a structure of a steering wheel switch for an automobile according to the present invention.

Fig. 3 is an exploded view of a steering wheel switch structure of an automobile according to the present invention.

Fig. 4 is a schematic view of a waterproof structure in the switch structure of the steering wheel of the vehicle according to the present invention.

Fig. 5 is a bottom structure view of the casing of the present invention, emphasizing the drainage groove and the hollow convex column.

Detailed Description

As shown in fig. 1 to 5, an automobile steering wheel switch structure includes a base 1, a circuit board assembly 2 disposed on the base 1, a housing 3 sleeved on the base 1 and the circuit board assembly 2, and a panel 4 sleeved on the housing 3, wherein the housing 3 is provided with a first button 51, a second button 52, a third button 53 and a toggle button 54 disposed in the middle of the third button 53 through a hole shaft, two ends of the bottom of the first button 51, two ends of the bottom of the second button 52, and two ends of the bottom of the third button 53 are provided with a press rod, and two push rods 23 are disposed below the toggle button 54; and micro switches are arranged on the circuit board assembly 2 corresponding to the positions of the pressure lever and the ejector rod 23.

The automobile steering wheel switch structure is also provided with an active waterproof structure, wherein the active waterproof structure comprises a drainage inclined plane arranged on the inner side of the panel 4, a drainage inclined plane arranged on the inner side of the third button 53, a concave structure of the shell 3, a drainage groove 31 corresponding to the position below the toggle button 54 on the shell 3, a waterproof bulge 33 corresponding to the position below the third button 53 on the shell 3, a drainage hole 21 on the circuit board assembly 2, a concave structure of the base 1 and a drainage port 11 on the base 1; the drainage groove 31 passes through the drainage hole 21, and a drainage gap is arranged between the circuit board assembly 2 and the base 1.

To further compress the switch volume, the on stroke of the microswitch 22 is 0.35 mm.

In order to avoid false triggering, elastic pieces 24 are arranged between the micro switch 22 and the pressure lever and the ejector rod 23, and the elastic pieces 24 are fixedly connected to the shell 3.

In order to reduce the number of parts and to reduce the volume of the switch, the spring plate 24 is fixedly connected to the housing 3 by riveting.

In order to compress the switch volume and ensure the service life of the elastic sheet 24, the thickness of the elastic sheet 24 is 0.2mm, and the material of the elastic sheet 24 is high-hardness stainless steel.

In order to avoid the shaking of the button and the toggle button after the assembly, the elastic sheet 24 is riveted, and the interference magnitude of 0.5mm is set with the first button 51, the second button 52, the third button 53 and the toggle button 54, namely the button and the toggle button press the elastic sheet down by 0.5 mm.

In order to avoid false triggering, the elastic sheet is riveted and assembled with the first button 51, the second button 52, the third button 53 and the toggle button 54, and then has a distance of 0.2mm with the micro switch.

In order to prevent a small amount of water from flowing to the microswitch 22 from the gap between the shell 3 and the push rod 23, a hollow convex column 32 matched with the push rod 23 is arranged on the shell 3 corresponding to the position below the toggle button 54.

This car steering wheel switch structure single-row button longest is 83.7mm, and the widest is 43.1mm (not including the panel), realizes 8 kinds of functions through 8 depression bars and 8 micro-gap switches that correspond, but the overall height only needs 25mm (from the height of button to base, does not include bottom joint structure), and especially third button 53 and the setting of dialling button 54 at middle part can realize 4 kinds of functions in the space of 47.5mm, width 21.3 mm. And as few as 10 corresponding parts.

This operation of car steering wheel switch: when any one side of the first button 51, the second button 52 and the third button 53 is pressed, as the buttons and the shell 3 are matched by shaft holes, the elastic sheet 24 riveted on the shell 3 is rotated and pressed down by a pressure bar structure of the buttons, so that the buttons are deformed to press down the microswitch 22 on the circuit board assembly 2 to realize conduction; when the toggle button 54 is pressed, the ejector rod 23 is pressed down through the rotation angle, and the elastic sheet 24 riveted on the shell 3 is pressed down, so that the elastic sheet deforms and presses down the microswitch 22 on the circuit board assembly 2 to realize connection.

After the button is released, the spring back is reset through the spring back force of the microswitch 22 and the spring back superposition force of the elastic sheet 24, the spring back is over 0.5mm until the spring back is returned, the spring back force of the elastic sheet 24 is completely relied, and the function is switched off when the spring back is returned from the maximum operation angle to the position over the switch-on stroke by over 0.35 mm.

This car steering wheel switch structure prevent mistake trigger principle: the microswitch is a low-stroke microswitch (the switch-on stroke is 0.35mm), and if the low-stroke microswitch is designed into a button or a mandril 23 to directly contact the microswitch 22 according to the conventional PUSH design, when a driver or a passenger mistakenly touches the button by hand, the function can be switched on in advance. In order to solve this risk, a spring plate 24 with a thickness of 0.2mm is added, which is riveted on the housing 3, the button and the riveted spring plate 24 have an interference of 0.5mm, and after the spring plate 24 is riveted and the button is reassembled, a dead stroke with a gap of 0.2mm is formed between the spring plate 24 and the micro switch 22, and the spring plate 24 is made of a stainless steel high-hardness material, and according to a pre-pressure calculation formula F ═ b × t3 × E ×/(4 × L3), an initial force value of the spring plate ≈ 0.7N (deformation ≈ 0.5mm) can be calculated, and a force value of the spring plate at the time of downward pressing connection ≈ 1.5N (deformation ≈ 1.05mm), a force value of the micro switch 3N, and a total force value of 4.5N can. Namely, the shaking of the switch button is controlled and the false triggering of the driver is prevented through the initial force value (0.7N) of the elastic sheet 24 and the total force value (4.5N) when the operation is switched on.

This car steering wheel switch structure's initiative waterproof principle: as shown in fig. 2 and fig. 4 and fig. 5, the switch structure has no passive waterproof structure such as waterproof rubber, most of the water is discharged from the panel 4 and the outer side of the housing 3, and the other part of the water flows into the concave structure of the housing 3 from the lower part of the toggle button 54 through the drainage slope of the third button 53, then flows to the base 1 through the drainage groove 31 on the housing 3, passes through the drainage hole 21 on the circuit board assembly 3, and is discharged through the drainage port 11 on the base 1; because the position on the shell 3 corresponding to the lower part of the toggle button 54 is provided with the hollow convex column 32 matched with the ejector rod 23, water cannot flow to the microswitch 22 from a gap between the shell 3 and the ejector rod 23, of course, the drainage structure below other buttons can also be set to be the same as the drainage structure, the circuit board assembly 2 is completely wrapped by the shell 3, a 1mm drainage gap is arranged between the circuit board assembly 2 and the base 1, and the waterproof grade can reach IPK 2.

The invention has been described above with reference to the accompanying drawings, and it is to be understood that the invention is not limited in its application to the details of construction and to the arrangements of the components set forth in the following description, since various modifications may be made without departing from the spirit or scope of the invention.