Button switch for automobile steering wheel

Abstract

The utility model discloses a button switch for an automobile steering wheel, and relates to the technical field of switches, the button switch comprises a shell embedded in a steering wheel body, the bottom of the shell is provided with an integrated circuit board provided with a plurality of touch switches, and an inner cavity of the shell is partitioned by partition assemblies to form a plurality of cavities corresponding to the touch switches. Through cooperative arrangement of the containing cavity, the communicating hole, the winding shaft, the torsion spring, the flexible dustproof piece and other structures, due to the fact that the outer end of the flexible dustproof piece adheres to the interior of the connecting groove formed in the shell and the partition assembly, when the key is pressed, under the traction effect of the inner wall of the connecting groove, the torsion spring at the end of the winding shaft rotates to enable the winding shaft to rotate, and then the key is pressed. The flexible dustproof sheet wound on the winding shaft is released to seal the peripheral side of the key, dust is prevented from entering the peripheral side of the key, and the problems that a gap between an existing switch key and a shell is lack of a dustproof structure, dust easily enters the gap after long-time use, and normal use of the key is possibly hindered in severe cases are solved as far as possible.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of switch, in particular to a button switch for automobile steering wheel. BACKGROUND

[0002] Generally, many switches are arranged on the automobile for controlling the normal work of different configuration components on the automobile. In order to operate conveniently, the switches for controlling various functions are usually collected together, such as the multimedia combination switch arranged on the automobile steering wheel, which includes track switching button, menu switching button, menu returning button, mute button and volume button.

[0003] The utility model discloses a button switch for automobile steering wheel, including the casing, the casing upper end sets up the button, sets up the circuit board in the casing, sets up the tact switch on the circuit board, and the tact switch works through the button of pressing down, its characterized in that: the button is cap-shaped, and four corners in the button are provided with vertical guide posts respectively, and the shell is provided with the guide structure corresponding to the guide post.

[0004] The gap between the switch button and the shell lacks a dustproof structure, and dust can easily enter the gap after long-term use, which may hinder the normal use of the button. Utility model content

[0005] The utility model discloses a button switch for automobile steering wheel, including the casing, the casing upper end sets up the button, sets up the circuit board in the casing, sets up the tact switch on the circuit board, and the tact switch works through the button of pressing down, its characterized in that: the button is cap-shaped, and four corners in the button are provided with vertical guide posts respectively, and the shell is provided with the guide structure corresponding to the guide post.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a button switch for car steering wheel, including the shell of embedding in the inside of steering wheel body, the bottom of shell is equipped with the integrated circuit board of installing multiple light touch switch, the inner chamber of shell is cut off and forms multiple cavities corresponding with light touch switch through the separation component, the cavity is slidably connected with the button through the guide structure, the inside of four sides of button is equipped with the accommodation cavity, the side wall of button is equipped with the communication hole of being linked with the accommodation cavity, the inner chamber of accommodation cavity is rotatably connected with the winding shaft through the elastic reset device, the winding shaft is wound with the flexible dustproof sheet of one end fixed connection with winding shaft, the top side wall of shell and separation component is equipped with the connecting groove, the outer end of flexible dustproof sheet is embedded in the corresponding connecting groove through the communication hole and is bonded with the inner wall of connecting groove after button.

[0008] Through adopting above technical scheme, when using, the user presses the button in the shell, at this time, the button is guided to move down under the guide of guide pipe and guide rod, triggers the light touch switch installed on the integrated circuit board, controls to start corresponding function through integrated circuit board, in the process of moving down, because the outer end of flexible dustproof sheet is bonded in the connecting groove of shell and separation component, under the traction of connecting groove inner wall, the torsional spring of winding shaft end part rotates and makes winding shaft rotate, releases the flexible dustproof sheet wound on winding shaft, seals the button periphery, prevents dust from entering the inside of button periphery, avoids the problem that the gap between existing switch button and shell lacks dustproof structure, dust is easy to enter the gap after long time use, seriously may hinder the normal use of button.

[0009] Optionally, the separation component is a partition plate embedded in the inner cavity of the shell, and a gap is left between the bottom of the partition plate and the upper surface of the integrated circuit board.

[0010] By adopting the above technical scheme, the partition plate is provided to separate the inner cavity of the shell, facilitating the user to install multiple buttons for controlling different functions, and a gap is left between the bottom of the partition plate and the upper surface of the integrated circuit board, which can avoid the contact between the integrated circuit board and the partition plate during installation, and the problem of easily causing damage to the integrated circuit board.

[0011] Optionally, the guide structure includes multiple guide pipes fixedly connected to the inner side wall of the cavity, and multiple guide rods corresponding to the guide pipes are fixedly connected to the bottom of the button, and the bottom end of the guide rod penetrates into the guide pipe and is slidably connected with the guide pipe.

[0012] By adopting the above technical scheme, the guide pipes and guide rods are provided to guide the moving path of the button, which can avoid the problem of deviation of the button during sliding and failure to trigger the corresponding light touch switch.

[0013] Optionally, the upper surfaces of the multiple buttons are extended upwards to form identification blocks protruding from the upper surfaces of the buttons, and the upper surfaces of the multiple identification blocks are different in shape.

[0014] By adopting the above technical scheme, the identification blocks of different shapes are formed on the surfaces of the plurality of keys, so that after being used skillfully, the user can identify the control function of the key by touching the identification block, without needing to look down to select the key, thereby greatly improving the safety of driving.

[0015] Optionally, a gap with a width not less than the thickness of the flexible dustproof sheet is arranged between the periphery of the key above the communication hole and the shell and the partition plate.

[0016] By adopting the above technical scheme, the gap with a width not less than the thickness of the flexible dustproof sheet is arranged between the periphery of the key above the communication hole and the shell and the partition plate, so that after the flexible dustproof sheet is pulled out from the key under the traction, the flexible dustproof sheet can be accommodated in the gap, thereby avoiding the problem that the flexible dustproof sheet is stuck to the key, and the user cannot press the key to control.

[0017] Optionally, the elastic reset device is a torsion spring sleeved at both ends of the winding shaft, one end of the torsion spring is fixedly connected with the winding shaft, and the other end of the torsion spring is fixedly connected with the inner wall of the accommodating cavity.

[0018] By adopting the above technical scheme, when the user presses the key to drive the winding shaft to rotate, the torsion spring is synchronously rotated under the force, and when the user releases the key, the torsion spring drives the winding shaft to reversely rotate under the elastic force of the torsion spring, and at the same time, the flexible dustproof sheet is wound on the winding shaft again, and the key is reset by the traction of the flexible dustproof sheet.

[0019] In summary, the beneficial effects of the present application are as follows:

[0020] The present application is matched by the accommodating cavity, the communication hole, the winding shaft, the torsion spring and the flexible dustproof sheet, and since the outer end of the flexible dustproof sheet is bonded in the connecting groove formed in the shell and the partition assembly, under the traction of the inner wall of the connecting groove when the key is pressed, the torsion spring at the end of the winding shaft is rotated to rotate the winding shaft, the flexible dustproof sheet wound on the winding shaft is released, the periphery of the key is sealed, dust is prevented from entering the inside of the periphery of the key, and the problem that the gap between the existing switch key and the shell lacks a dustproof structure, and dust easily enters the gap after a long time of use, and seriously, the normal use of the key is hindered is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a connection structure schematic diagram of the button switch and the steering wheel body of the present application;

[0022] Figure 2 is a connection structure schematic diagram of the shell and the partition plate of the present application;

[0023] Figure 3 is a connection structure schematic diagram of the key and the shell of the present application;

[0024] Figure 4 Figure 1 is a schematic view of the connection structure of the torsion spring and the winding shaft and the flexible dustproof sheet.

[0025] Mark explanation: 1, steering wheel body; 2, shell; 3, integrated circuit board; 4, partition; 5, cavity; 6, guide pipe; 7, button; 8, guide rod; 9, identification block; 10, containing cavity; 11, communication hole; 12, winding shaft; 13, torsion spring; 14, flexible dustproof sheet; 15, connecting groove. DETAILED DESCRIPTION

[0026] The following will be combined with the Figures 1-4 Further detailed description of the present application.

[0027] Please refer to Figures 1-3 A button switch for automobile steering wheel, including the shell 2 embedded in the steering wheel body 1 inside, the shell 2 bottom is provided with the integrated circuit board 3 installed multiple light touch switch, the shell 2 inner cavity is cut off to form multiple cavities 5 corresponding to the light touch switch through the partition assembly, the cavity 5 is slidably connected with the button 7 through the guide structure. When the user uses, the button 7 can be pressed into the shell 2, under the guide action of the guide structure, the bottom of the button 7 moves down to trigger the light touch switch installed on the integrated circuit board 3, and the corresponding function is started through the integrated circuit board 3 control.

[0028] The button 7 four sides inside are provided with containing cavity 10, and the communication hole 11 is arranged on the side wall of the button 7 and communicated with the containing cavity 10.

[0029] The winding shaft 12 is rotatably connected in the containing cavity 10 inner cavity through the elastic reset device, and the flexible dustproof sheet 14 for blocking dust into the gap between the button 7 and the shell 2 is wound on the winding shaft 12, and one end of the flexible dustproof sheet 14 is fixedly connected with the winding shaft 12.

[0030] The shell 2 and the partition assembly top side wall are provided with the connecting groove 15, the outer end of the flexible dustproof sheet 14 is embedded into the corresponding connecting groove 15 after penetrating through the button 7 through the communication hole 11 and is bonded with the inner wall of the connecting groove 15. When the user presses the button 7, because the outer end of the flexible dustproof sheet 14 is embedded in the connecting groove 15 arranged on the shell 2 and the partition assembly, and is bonded with the inner wall of the connecting groove 15, under the traction of the inner wall of the connecting groove 15, the elastic reset device at the end of the winding shaft 12 is deformed after being pressed by the pressing force, so that the winding shaft 12 can rotate, the flexible dustproof sheet 14 wound on the winding shaft 12 is released, the button 7 is sealed, and the dust is prevented from entering the inside of the button 7, which affects the normal use of the button 7.

[0031] Refer to Figure 2The separation assembly is a partition plate 4 embedded in the inner cavity of the shell 2, and a gap is left between the bottom of the partition plate 4 and the upper surface of the integrated circuit board 3. The partition plate 4 is arranged to separate the inner cavity of the shell 2, facilitating the user to install multiple keys 7 for controlling different functions. The gap left between the bottom of the partition plate 4 and the upper surface of the integrated circuit board 3 can prevent the integrated circuit board 3 from being damaged when the integrated circuit board 3 is installed and comes into contact with the partition plate 4.

[0032] Referring to Figure 3 The guide structure includes a plurality of guide pipes 6 fixedly connected to the inner side wall of the cavity 5, and a plurality of guide rods 8 corresponding to the guide pipes 6 fixedly connected to the bottom of the keys 7. The bottom end of the guide rod 8 is arranged inside the guide pipe 6 and is in sliding connection with the guide pipe 6. The guide pipes 6 and the guide rods 8 are arranged to guide the movement path of the keys 7, so as to avoid the keys 7 deviating during sliding and failing to trigger the corresponding tactile switch.

[0033] Referring to Figure 2 The upper surfaces of the plurality of keys 7 are all upwardly extended to form identification blocks 9 protruding from the upper surfaces of the keys 7, and the upper surfaces of the plurality of identification blocks 9 have different shapes. The identification blocks 9 with different shapes are arranged on the surfaces of the plurality of keys 7, so that the user can identify the control function of the key 7 by touching the identification block 9 after being familiar with the use, without needing to look down to select the key 7, thereby greatly improving the safety of the user during driving.

[0034] Referring to Figure 3 A gap is left between the peripheral side of the key 7 above the communication hole 11 and the shell 2 and the partition plate 4, and the width of the gap is not less than the thickness of the flexible dustproof sheet 14. The gap with a width not less than the thickness of the flexible dustproof sheet 14 is left between the peripheral side of the key 7 above the communication hole 11 and the partition plate 4 and the shell 2, so that the flexible dustproof sheet 14 can be accommodated in the gap after being pulled out of the key 7, thereby avoiding the flexible dustproof sheet 14 from being stuck to the key 7, which causes the user to be unable to press the key 7 for control.

[0035] Referring to Figure 4 The elastic reset device is a torsion spring 13 sleeved on both ends of the winding shaft 12. One end of the torsion spring 13 is fixedly connected to the winding shaft 12, and the other end of the torsion spring 13 is fixedly connected to the inner wall of the accommodating cavity 10. When the user presses the key 7 to drive the winding shaft 12 to rotate, the torsion spring 13 is forced to rotate synchronously. When the user releases the key 7, the torsion spring 13 drives the winding shaft 12 to rotate reversely under the action of its own elastic force, and at the same time, the flexible dustproof sheet 14 is rewound onto the winding shaft 12, and the key 7 is reset by the flexible dustproof sheet 14.

[0036] The implementation principle of the present application is that: in use, the user presses the key 7 into the shell 2, at this time the key 7 is guided to move down by the guide pipe 6 and the guide rod 8 to trigger the touch switch installed on the integrated circuit board 3, and the corresponding function is started by the integrated circuit board 3, in the process of moving down, the flexible dustproof sheet 14 is bonded to the connecting groove 15 on the shell 2 and the separation assembly, under the traction of the inner wall of the connecting groove 15, the torsion spring 13 at the end of the winding shaft 12 rotates to make the winding shaft 12 rotate, the flexible dustproof sheet 14 wound on the winding shaft 12 is released, the key 7 is sealed, dust is prevented from entering the inside of the key 7, and the problem that the gap between the existing switch key 7 and the shell 2 lacks a dustproof structure, dust easily enters the gap after a long time of use, and the normal use of the key 7 is hindered in serious cases is avoided.

[0037] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A push-button switch for an automobile steering wheel, comprising a housing (2) embedded inside a steering wheel body (1), wherein an integrated circuit board (3) for mounting a plurality of tactile switches is provided at the bottom of the housing (2), and the inner cavity of the housing (2) is divided by a partition component to form a plurality of cavities (5) corresponding to the tactile switches, wherein a button (7) is slidably connected in the cavity (5) by a guide structure, characterized in that: The button (7) has a receiving cavity (10) on each of its four sides. The button (7) has a connecting hole (11) on its side wall that communicates with the receiving cavity (10). The receiving cavity (10) is rotatably connected to a winding shaft (12) through an elastic reset device. A flexible dustproof sheet (14) with one end fixedly connected to the winding shaft (12) is wound on the winding shaft (12). The outer shell (2) and the top side wall of the partition assembly are both provided with connecting grooves (15). The outer end of the flexible dustproof sheet (14) passes through the button (7) through the connecting hole (11) and is embedded in the corresponding connecting groove (15) and bonded to the inner wall of the connecting groove (15).

2. A push-button switch for an automobile steering wheel according to claim 1, characterized in that: The partition component is a partition (4) embedded in the inner cavity of the outer shell (2), and a gap is left between the bottom of the partition (4) and the upper surface of the integrated circuit board (3).

3. A push-button switch for an automobile steering wheel according to claim 1, characterized in that: The guide structure includes multiple guide tubes (6) fixedly connected to the inner wall of the cavity (5), and multiple guide rods (8) corresponding to the guide tubes (6) fixedly connected to the bottom of the button (7). The bottom end of the guide rod (8) passes through the inside of the guide tube (6) and is slidably connected to the guide tube (6).

4. A push-button switch for an automobile steering wheel according to claim 1, characterized in that: The upper surfaces of the multiple buttons (7) extend upward to form a protruding mark block (9) on the upper surface of the button (7), and the upper surfaces of the multiple mark blocks (9) have different shapes.

5. A push-button switch for an automobile steering wheel according to claim 2, characterized in that: A gap is provided between the button (7) above the connecting hole (11) and the outer shell (2) and the partition (4), and the width of the gap is not less than the thickness of the flexible dustproof sheet (14).

6. A push-button switch for an automobile steering wheel according to claim 1, characterized in that: The elastic reset device is a torsion spring (13) sleeved at both ends of the winding shaft (12). One end of the torsion spring (13) is fixedly connected to the winding shaft (12), and the other end of the torsion spring (13) is fixedly connected to the inner wall of the receiving cavity (10).

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