CN112208621A

CN112208621A - Touch switch device for automobile steering wheel

Info

Publication number: CN112208621A
Application number: CN202011250102.0A
Authority: CN
Inventors: 吴财乃; 郭衍良
Original assignee: Daming Electronic Co ltd
Current assignee: Daming Electronic Co ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-01-12

Abstract

The invention provides a touch switch device of an automobile steering wheel, comprising: a switch housing having a circuit board therein; the bracket panel assembly is arranged above the switch shell and comprises a panel, a capacitor film and a bracket, wherein the panel is provided with a plurality of keys, and the bracket is provided with a driving structure which can be pressed by the keys and is abutted against the pressure detection piece; the pressure detection part is connected with the circuit board and is suitable for transmitting detected pressure information to the circuit board, and the circuit board sends an action signal to the vibration part when the pressure exceeds a preset pressure value; and the vibrating piece is connected with the circuit board and is suitable for driving the keys to vibrate after the circuit board sends out action signals. When a user touches keys on the panel, the driving structure on the support can be driven to abut against the pressure detection piece, the pressure detection piece transmits detected pressure information to the circuit board, if the pressure exceeds a preset pressure value, the circuit board sends an action signal to the vibration piece, and the vibration piece drives the keys to vibrate, so that real-time vibration feedback is provided for the user, and the touch is confirmed to be effective.

Description

Touch switch device for automobile steering wheel

Technical Field

The invention relates to the technical field of automotive electronics, in particular to an automotive steering wheel touch switch device.

Background

The multifunctional key on the automobile steering wheel is changed from the traditional mechanical key into a touch panel, which is the development direction of the automobile steering wheel. In practical use, the conventional mechanical keys of the steering wheel of the automobile bring inconvenience to the operation of the touch panel, so that the safety problem is caused.

First, when a user operates on a conventional touch panel of a steering wheel of an automobile, it is impossible to confirm whether or not the operation is effective only by touching. The traditional mechanical key users have the feeling of pressing the key during operation, and the users can confirm the effectiveness of the operation through the feeling. After the touch panel is replaced, the user loses the actual feeling of pressing, and after the user presses the key, the user cannot completely determine whether the operation is effective, and needs to look down to confirm, so that the operation of the steering wheel multifunctional key becomes complicated. Particularly, when a user is in the driving process, the driver lowers the head to the steering wheel to confirm whether the operation is effective or not, so that the sight of the driver leaves the road surface, and potential safety hazards are increased.

Secondly, during the automobile went, driver's hand was operated at the steering wheel region all the time, and the touch panel on the steering wheel can be touched to the hand in the removal in-process unavoidably, and this kind of mistake is touched and can be made the driver open a certain function of car and not know, touches volume key sudden increase volume like the mistake, and the mistake touches seat adjustment key makes seat sudden movement, opens cruise system etc. by mistake, and these circumstances all bring independency for driving, have increased the potential safety hazard.

Disclosure of Invention

Therefore, the technical problem to be solved by the present invention is to overcome the defects that the steering wheel touch switch device in the prior art cannot provide real-time operation feedback for a user and is easily touched by mistake, so as to provide an automobile steering wheel touch switch device which can provide real-time operation feedback and is not easily touched by mistake.

Therefore, the invention provides a touch switch device of an automobile steering wheel, which comprises a switch shell, a support panel assembly, a pressure detection piece and a vibration piece. A circuit board is arranged in the switch shell; the bracket panel assembly is arranged above the switch shell and comprises a panel, a capacitor film and a bracket which are sequentially arranged from top to bottom, a plurality of keys are arranged on the panel, and the bracket is provided with a driving structure which can be pressed by the keys and is abutted against the pressure detection piece; the pressure detection part is connected with the circuit board and is suitable for transmitting detected pressure information to the circuit board, and the circuit board sends an action signal to the vibration part when the pressure exceeds a preset pressure value; and the vibrating piece is connected with the circuit board and is suitable for driving the key to vibrate after the circuit board sends an action signal.

The driving structure comprises a driving rod and a first rubber ring, and the driving rod is arranged at the bottom of the bracket and extends towards the circuit board; the first rubber ring is sleeved on the driving rod, and the bottom surface of the first rubber ring can abut against the pressure detection piece.

The circuit board can set the same or different preset pressure values corresponding to the plurality of keys.

The vibrating piece is arranged in the mounting groove of the support.

The support pass through mounting structure with switch shell fixed connection, mounting structure includes: the mounting plate is arranged at the top of the switch shell and is provided with a mounting hole in a forming mode; the connecting column is arranged on the bottom surface of the bracket, penetrates through the mounting hole and is fixedly connected with the mounting plate through a fastening assembly; the elastic piece is arranged between the top surface of the mounting plate and the bottom surface of the bracket and is suitable for supporting the bracket; and/or the elastic piece is arranged between the bottom surface of the mounting plate and the fastening component.

The spliced pole middle part is equipped with the screw hole, fastening components including can with screw hole threaded connection's screw, and locate the screw head with the gasket between the spliced pole, the size of gasket is greater than the size of mounting hole.

The elastic component is located for the cover second rubber circle on the spliced pole, the second rubber circle is suitable for including the shaping on and supports the first rubber portion of support, the shaping is locating down the mounting panel with second rubber portion between the gasket, and locate first rubber portion with between the second rubber portion, can supply mounting panel male annular groove.

And annular convex ribs are arranged on the top surface and the bottom surface of the second rubber ring.

The vibrating piece is a linear motor, and the circuit board can control the linear motor to output vibration sensations of different levels.

The light guide body comprises a first light guide part and a second light guide part, wherein the first light guide part is arranged between the capacitor film and the support and can be opposite to the plurality of keys, and the second light guide part is connected with the first light guide part and extends to the position above the LED lamp of the circuit board.

The panel pass through buckle structure with support fixed connection, buckle structure is including locating a plurality of fixture blocks on the support outer wall, and locate on the panel, can with a plurality of the fixture block corresponds the card hole of joint.

The technical scheme of the invention has the following advantages:

1. the invention provides a touch switch device of an automobile steering wheel, which comprises a switch shell, a support panel assembly, a pressure detection piece and a vibration piece, wherein when a user touches a key on a panel, a driving structure on a support is driven to abut against the pressure detection piece, the pressure detection piece transmits detected pressure information to a circuit board, when the pressure exceeds a preset pressure value, the circuit board sends an action signal to the vibration piece, and the vibration piece drives the key to vibrate, so that real-time vibration feedback is provided for the user, and the touch effect is confirmed.

2. The invention provides an automobile steering wheel touch switch device, wherein a driving structure comprises a driving rod and a first rubber ring, the first rubber ring is sleeved on the driving rod, the bottom surface of the first rubber ring can be abutted against a pressure detection piece, the first rubber ring has certain hardness and can transmit the pressure of a key, and meanwhile, the first rubber ring can avoid the direct hard contact between the driving rod and the pressure detection piece, so that the service life of the pressure detection piece is prolonged.

3. According to the automobile steering wheel touch switch device, the circuit board can set the same or different preset pressure values corresponding to the plurality of keys, and due to the fact that the positions and the importance of the different keys on the panel are different, the touch sensitivity of the different keys can be set according to different requirements of customers, and the automobile steering wheel touch switch device is more convenient for the customers to use.

4. According to the automobile steering wheel touch switch device, the vibrating piece is arranged in the mounting groove of the support, the vibrating piece can drive the panel above the support to vibrate only by driving the support to vibrate, and compared with a mode that the vibrating piece is arranged on the switch shell and needs to drive the whole switch shell and the support panel assembly to vibrate, the requirement on the vibrating force of the vibrating piece is low, the cost of the vibrating piece is reduced, and the whole switch device is more miniaturized due to the small size of the vibrating piece.

5. According to the automobile steering wheel touch switch device, the connecting column on the bottom surface of the bracket penetrates through the mounting hole of the switch shell mounting plate and then is fixedly connected with the mounting plate through the fastening assembly, and the elastic piece is arranged between the top surface of the mounting plate and the bottom surface of the bracket and is suitable for supporting the bracket; the elastic piece is also arranged between the bottom surface of the mounting plate and the fastening component. The elastic part can support the bracket, so that a certain gap is formed between the bracket and the mounting plate, namely, the bracket is suspended on the switch shell, and when the vibration part drives the bracket to vibrate, the elastic part can have a certain buffering effect, so that the bracket is prevented from being in hard contact with the mounting plate, and the noise is reduced; the elastic piece arranged between the bottom surface of the mounting plate and the fastening assembly can effectively avoid the hard contact between the fastening assembly and the mounting plate, and the noise is further reduced.

6. The invention provides an automobile steering wheel touch switch device, wherein an elastic piece is a second rubber ring sleeved on a connecting column, the second rubber ring comprises a first rubber part which is formed on the upper part and is suitable for supporting a support, a second rubber part which is formed on the lower part and is arranged between an installation plate and a gasket, and an annular groove which is arranged between the first rubber part and the second rubber part and is used for the installation plate to be inserted. During the assembly, only need with annular groove and mounting panel on the second rubber circle outer wall to inserting and be connected, after passing the spliced pole of support through the middle part through-hole of second rubber circle again, through fastening components fixed connection, because the second rubber circle is a part, the structure is simpler like this, and the assembly is swiftly convenient.

7. According to the automobile steering wheel touch switch device, the vibrating piece is the linear motor, and the circuit board can control the linear motor to output different levels of vibration, so that different requirements of customers can be met.

8. The invention provides a touch switch device of an automobile steering wheel, wherein a light guide body comprises a first light guide part and a second light guide part, wherein the first light guide part is arranged between a capacitance film and a support and can be opposite to a plurality of keys, and the second light guide part is connected with the first light guide part and extends to the upper part of an LED lamp of a circuit board. Only need set up an LED lamp like this, just can make the backlight of whole panel button light, compare with the mode that a button corresponds an LED lamp of prior art, reduced the quantity of LED lamp, reduced manufacturing cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is an exploded view of a touch switch device for a steering wheel of an automobile according to the present invention;

FIG. 2 is a cross-sectional view of a touch switch device of a steering wheel of an automobile;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

FIG. 4 is a top view of the bracket;

fig. 5 is a plan view of the touch switch device for the steering wheel of the automobile.

Description of reference numerals: 1. a switch housing; 11. mounting a plate; 12. mounting holes; 2. a circuit board; 21. a pressure detecting member; 3. a panel; 30. pressing a key; 31. a clamping hole; 4. a capacitor film; 5. a support; 50. a drive rod; 51. a first rubber ring; 52. mounting grooves; 53. connecting columns; 54. a clamping block; 55. a bump; 6. a vibrating member; 7. a fastening assembly; 71. a screw; 72. a gasket; 8. a second rubber ring; 81. a first rubber part; 82. a second rubber part; 83. an annular groove; 84. an annular convex rib; 9. a light guide; 91. a first light guide part; 92. and a second light guide part.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Examples

The present embodiment provides a touch switch device for a steering wheel of an automobile, as shown in fig. 1 and 2, including a switch housing 1 and a bracket panel assembly.

As shown in fig. 2, a circuit board 2 is arranged in the switch housing 1, and a pressure detection part 21 and an LED lamp are arranged on the circuit board 2. The pressure detection part 21 is connected with the circuit board 2 and is suitable for transmitting detected pressure information to the circuit board 2, and the circuit board 2 sends an action signal to the vibrating part 6 when the pressure exceeds a preset pressure value. In the present embodiment, the pressure detecting member 21 is a pressure sensor. The circuit board 2 may set the same or different preset pressure values corresponding to the plurality of keys 30.

And the bracket panel assembly is arranged above the switch shell 1 and comprises a panel 3, a capacitance film 4, a light guide body 9 and a bracket 5 which are sequentially arranged from top to bottom as shown in figures 2-5.

As shown in fig. 5, the panel 3 is provided with a plurality of buttons 30, and the outer wall of the side plate is provided with a plurality of fastening holes 31.

The light guide member 9 includes a first light guide portion 91 disposed between the capacitive film 4 and the support 5 and capable of facing the plurality of keys 30, and a second light guide portion 92 connected to the first light guide portion 91 and extending above the LED lamp of the circuit board 2, and the support 5 is provided with a through hole (not shown) through which the second light guide portion 92 passes.

The middle part of the front surface of the bracket 5 is provided with a mounting groove 52 suitable for mounting the vibrating piece 6, the bottom surface of the bracket is provided with a driving structure which can be pressed by the key 30 and is abutted against the pressure detection piece 21, and the driving structure comprises a driving rod 50 which is arranged at the bottom of the bracket 5 and extends towards the direction of the circuit board 2; the first rubber ring 51 is sleeved on the driving rod 50, and the bottom surface of the first rubber ring 51 can abut against the pressure detection piece 21. Support 5 through mounting structure with switch housing 1 fixed connection, mounting structure includes: the mounting plate 11 is arranged at the top of the switch shell 1 and is provided with a mounting hole 12 in a molding mode; the connecting column 53 is arranged on the bottom surface of the bracket 5, and the connecting column 53 is fixedly connected with the mounting plate 11 through a fastening component 7 after penetrating through the mounting hole 12; an elastic member disposed between the top surface of the mounting plate 11 and the protrusion 55 of the bottom surface of the bracket 5, the elastic member being adapted to support the bracket 5; the elastic piece is arranged between the bottom surface of the mounting plate 11 and the fastening assembly 7. The middle of the connecting column 53 is provided with a threaded hole, the fastening assembly 7 comprises a screw 71 which can be in threaded connection with the threaded hole, and a gasket 72 which is arranged between the head of the screw 71 and the connecting column 53, and the size of the gasket 72 is larger than that of the mounting hole 12. In this embodiment, the elastic component is located for the cover second rubber circle 8 on the spliced pole 53, the top surface and the bottom surface of second rubber circle 8 all are equipped with the protruding muscle 84 of annular, second rubber circle 8 is the I-shaped structure, and the middle part of I-shaped structure is equipped with the perforation that can supply spliced pole 53 to wear to establish, and second rubber circle 8 is suitable for the support including the shaping on the first rubber portion 81 of support 5, the shaping is locating down mounting panel 11 with second rubber portion 82 between the gasket 72, and locate first rubber portion 81 with between the second rubber portion 82, can supply mounting panel 11 male annular groove 83. A plurality of clamping blocks 54 which can be matched and clamped with the clamping holes 31 of the panel 3 are arranged on the outer wall of the bracket 5. In this embodiment, there are 3 mounting structures, and 3 mounting structures are the triangle-shaped and distribute. As an alternative embodiment, the number of the mounting structures may be 1, 2, 3 or more, and may be flexibly selected according to actual requirements.

And the vibrating piece 6 is connected with the circuit board 2 and is suitable for driving the bracket 5 to vibrate after the circuit board 2 sends an action signal, so as to drive the key 30 to vibrate. The vibrating piece 6 is a linear motor, and the circuit board 2 can control the linear motor to output vibration sensations of different levels. It should be noted that the linear motor is a mature technology in the prior art, and therefore, the internal structure and the operation principle thereof are not described in detail.

The invention provides a touch switch device of an automobile steering wheel, which comprises a switch shell 1, a support panel assembly, a pressure detection part 21 and a vibration part 6, wherein when a user touches a key 30 on a panel 3, a driving structure on a support 5 is driven to abut against the pressure detection part 21, the pressure detection part 21 transmits detected pressure information to a circuit board 2, when the pressure exceeds a preset pressure value, the circuit board 2 sends an action signal to the vibration part 6, and the vibration part 6 drives the key 30 to vibrate, so that real-time vibration feedback is provided for the user, and the touch effect is confirmed.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. An automotive steering wheel touch switch device, comprising:

a switch shell (1) in which a circuit board (2) is arranged;

the support panel assembly is arranged above the switch shell (1) and comprises a panel (3), a capacitor film (4) and a support (5) which are sequentially arranged from top to bottom, a plurality of keys (30) are arranged on the panel (3), and the support (5) is provided with a driving structure which can be pressed by the keys (30) and is abutted against the pressure detection piece (21);

the pressure detection piece (21) is connected with the circuit board (2) and is suitable for transmitting detected pressure information to the circuit board (2), and the circuit board (2) sends an action signal to the vibration piece (6) when the pressure exceeds a preset pressure value;

the vibrating piece (6) is connected with the circuit board (2) and is suitable for driving the key (30) to vibrate after the circuit board (2) sends an action signal.

2. The touch switch apparatus for vehicle steering wheel according to claim 1, wherein the driving structure comprises:

the driving rod (50) is arranged at the bottom of the bracket (5) and extends towards the circuit board (2);

the first rubber ring (51) is sleeved on the driving rod (50), and the bottom surface of the first rubber ring (51) can abut against the pressure detection piece (21).

3. The touch switch device for the steering wheel of the automobile according to claim 2, wherein the circuit board (2) can set the same or different preset pressure values corresponding to the plurality of keys (30).

4. The automobile steering wheel tactile switch device according to any one of claims 1 to 3, wherein the vibrating member (6) is provided in a mounting groove (52) of the bracket (5).

5. The touch switch device for automobile steering wheels according to claim 4, wherein the bracket (5) is fixedly connected with the switch housing (1) through a mounting structure, the mounting structure comprising:

the mounting plate (11) is arranged at the top of the switch shell (1) and is provided with a mounting hole (12) in a molding manner;

the connecting column (53) is arranged on the bottom surface of the bracket (5), and the connecting column (53) penetrates through the mounting hole (12) and is fixedly connected with the mounting plate (11) through a fastening component (7);

the elastic piece is arranged between the top surface of the mounting plate (11) and the bottom surface of the bracket (5), and is suitable for supporting the bracket (5); and/or the elastic element is arranged between the bottom surface of the mounting plate (11) and the fastening component (7).

6. The touch switch device for automobile steering wheels according to claim 5, wherein a threaded hole is formed in the middle of the connecting column (53), the fastening assembly (7) comprises a screw (71) capable of being screwed with the threaded hole, and a gasket (72) is arranged between the head of the screw (71) and the connecting column (53), and the size of the gasket (72) is larger than that of the mounting hole (12).

7. The touch switch device of the steering wheel of the automobile of claim 6, wherein the elastic member is a second rubber ring (8) sleeved on the connecting column (53), the second rubber ring (8) comprises a first rubber part (81) formed on the connecting column and adapted to support the bracket (5), a second rubber part (82) formed on the lower part and arranged between the mounting plate (11) and the gasket (72), and an annular groove (83) arranged between the first rubber part (81) and the second rubber part (82) and allowing the mounting plate (11) to be inserted.

8. The touch switch device for automobile steering wheels according to claim 7, wherein the second rubber ring (8) is provided with annular ribs (84) on both top and bottom surfaces thereof.

9. The automobile steering wheel tactile switch device according to any one of claims 1 to 8, wherein the vibrating member (6) is a linear motor, and the circuit board (2) controls the linear motor to output different levels of vibration.

10. The touch switch device for automobile steering wheels according to any one of claims 1 to 9, further comprising a light guide member (9), wherein the light guide member (9) comprises a first light guide portion (91) which is disposed between the capacitive film (4) and the bracket (5) and is capable of facing the plurality of keys (30), and a second light guide portion (92) which is connected to the first light guide portion (91) and extends above the LED lamp of the circuit board (2).

11. The touch switch device for the steering wheel of the automobile according to any one of claims 1-10, wherein the panel (3) is fixedly connected with the bracket (5) through a snap structure, and the snap structure comprises a plurality of snap blocks (54) arranged on the outer wall of the bracket (5), and snap holes (31) arranged on the panel (3) and capable of correspondingly snapping with the plurality of snap blocks (54).