A steering wheel multifunction switch roller adjusting structure

Abstract

The present application relates to the technical field of automobile steering wheel switch, and discloses a steering wheel multifunctional switch roller adjusting structure, which comprises a steering wheel support, a roller support movably installed in the steering wheel support and a roller rotatably arranged on the roller support, further comprises an air bag outer layer assembly, the air bag outer layer assembly comprises: an outer layer plate, a plurality of outer layer plates are circumferentially arranged on the outer side of the roller, an outer layer air bag is fixed on one side of the outer layer plate close to the roller, a T-shaped rib is fixed on the bottom of the roller support, a limiting frame is fixed in the steering wheel support, and the top of the limiting frame is provided with a limiting groove, wherein, the roller support and the steering wheel support have a radial movable gap, the present application has the advantages that the dustproof function and the locking function are integrated in the roller switch structure of the same elastic air bag, and the problem that the existing steering wheel roller is difficult to simultaneously enhance the dustproof sealing property and the operation locking property through one-time pressing operation is solved.

Description

Technical Field

[0001] This invention relates to the field of automotive steering wheel switch technology, specifically to a roller adjustment structure for a multi-function steering wheel switch. Background Technology

[0002] Steering wheel switches are an important part of the vehicle's control system. They are located on the sides or below the steering wheel, allowing the driver to operate them quickly while driving. In addition to the rotation function for gear adjustment, the roller structure of steering wheel switches usually also has pressing and tossing functions, so it is necessary to prevent accidental activation of other functions while performing one operation.

[0003] A search revealed a Chinese utility model patent with publication number CN222355025U, which discloses a five-way roller structure for a car steering wheel switch. This structure integrates multiple functions into a toggle switch and features an arc-shaped operating surface to prevent hand slippage during operation. The roller can be controlled in multiple degrees of freedom by pressing, tossing, and pushing. The PCB assembly captures and provides feedback on the actions, enabling control of different functions.

[0004] The rollers of the above-mentioned device can be pressed and flicked; however, there is no anti-accidental touch function between different functions. The dustproof structure and the anti-accidental operation locking structure are usually implemented by two independent components, which occupy a lot of space, are costly, and the dustproof effect does not change with the operation state. Summary of the Invention

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a roller adjustment structure for a multi-function steering wheel switch. This structure integrates dustproof and locking functions into a single elastic airbag, solving the problem that existing steering wheel rollers cannot simultaneously enhance dustproof sealing and operational locking performance with a single press operation.

[0006] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a roller adjustment structure for a multi-function steering wheel switch, comprising a steering wheel bracket, a roller bracket movably mounted within the steering wheel bracket, and a roller rotatably mounted on the roller bracket, and further comprising an airbag outer layer assembly, the airbag outer layer assembly comprising: Outer layer plate, a plurality of said outer layer plates are circumferentially disposed on the outside of the roller; The outer airbag is fixed to the side of the outer plate near the roller; T-shaped ribs are fixed to the bottom of the roller bracket; A limiting bracket is fixed inside the steering wheel bracket, and the top of the limiting bracket has a limiting groove; The roller bracket and the steering wheel bracket have a radial clearance. When the outer plate is axially pressed, the outer plate drives the roller and roller bracket to descend synchronously, causing the T-shaped rib to enter the limiting groove at the top of the limiting frame. The outer airbag is deformed by the outer plate and roller together, and applies a compressive force to the side wall of the roller bracket, pushing the roller bracket to move the T-shaped rib towards the side wall of the limiting frame, increasing the friction between the T-shaped rib and the side wall of the limiting frame to achieve locking. At the same time, the outer airbag expands radially outward under the action of elastic deformation, sealing the annular gap between the roller and the steering wheel bracket.

[0007] Furthermore, the outer layer plate has a bent portion extending into the roller, and the roller has a straight groove for limiting the outer layer plate.

[0008] Furthermore, the outer airbag includes a central region away from the steering wheel bracket mounting hole wall and an edge region near the steering wheel bracket mounting hole wall. A diaphragm for separating the central region and the edge region is fixedly connected inside the outer airbag. The diaphragm has multiple ventilation holes. When the outer airbag is squeezed and deformed, the edge region expands and applies a compressive force to the side wall of the roller bracket, pushing the roller bracket to move the T-shaped rib towards the side wall of the limiting frame.

[0009] Furthermore, the top of the limiting frame is provided with two arc-shaped grooves that are respectively connected to both sides of the limiting groove, and the radius of the arc-shaped grooves is the same as the rotation radius of the T-shaped rib.

[0010] Furthermore, a metal block is fixedly connected to the outer plate near the roller, and a receiving groove is provided on the side of the roller, with an electromagnet installed in the receiving groove.

[0011] Furthermore, an elastic plate is fixedly connected to one side of the inner wall of the receiving groove, the electromagnet is fixed to the elastic plate, and an elliptical ring for limiting the elastic plate is fixedly connected to the side of the roller.

[0012] Furthermore, the inner side of the elliptical ring is provided with a bolt that penetrates the elliptical ring, and one end of the bolt extending to the outside of the elliptical ring is rotatably connected to an arc-shaped plate.

[0013] Furthermore, an optocoupler is fixedly connected inside the steering wheel bracket, and a ratchet is rotatably connected inside the optocoupler. A transmission gear is connected between the roller and the ratchet.

[0014] Furthermore, a gear shift shaft is fixedly connected to the axle of the roller, and a gear shift spring is fixedly connected to the roller bracket, with one end of the gear shift spring pressing against the gear shift shaft.

[0015] (III) Beneficial Effects Compared with the prior art, the present invention provides a roller adjustment structure for a multi-function steering wheel switch, which has the following advantages: 1. The roller adjustment structure of this multi-function steering wheel switch, through the set airbag outer layer component, the outer airbag is deformed by the outer layer plate and the roller together, and applies extrusion force to the side wall of the roller bracket, pushing the roller bracket to move the T-shaped rib towards the side wall of the limit frame to achieve locking. At the same time, the outer airbag expands radially outward under the action of elastic deformation, sealing the annular gap between the roller and the steering wheel bracket. The roller switch structure that integrates dustproof function and locking function into the same elastic airbag solves the problem that existing steering wheel rollers are difficult to simultaneously enhance dustproof sealing and operation locking performance with a single press operation.

[0016] 2. The roller adjustment structure of the multi-function switch on the steering wheel achieves a two-way mechanical interlock by using the limiting groove and arc groove on the top of the limiting frame to lock the toggle in the pressing state and the toggle in the pressing state. When the outer airbag is pressed, the elastic deformation pushes the T-shaped rib to squeeze the inner wall of the limiting frame to strengthen the locking degree, further enhancing the anti-misoperation effect of the roller's different functions.

[0017] 3. The roller adjustment structure of the multi-function switch on the steering wheel, through the middle area, edge area, diaphragm and vent holes in the outer airbag, obstructs the flow of gas when it passes through the vent holes, converting part of the kinetic energy during operation into a uniform and controllable resistance, providing a damping feel during operation, thereby improving the handling feel.

[0018] 4. The roller adjustment structure of the multi-function switch of this steering wheel, through the setting of metal blocks and electromagnets, can use magnetic force to increase the degree of expansion of the outer airbag when it is squeezed, so that the outer airbag can better cover the gap between the roller and the steering wheel bracket, thereby better preventing dust from entering the interior of the steering wheel from the gap between the roller and the steering wheel bracket.

[0019] 5. The roller adjustment structure of the multi-function switch on the steering wheel, through the setting of an elliptical ring, bolts and arc-shaped plates, shortens the distance between the outer plate and metal block at the lowest point of the roller and the electromagnet, thereby reducing the difference in the magnetic attraction force of the outer plate at the highest and lowest points of the roller to the metal block and electromagnet, so that the outer airbag at different positions of the roller is subjected to the same squeezing force from the outer plate, thereby reducing the influence of gravity on the degree of squeezing of the outer airbag. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the roller bracket and roller of the present invention.

[0022] Figure 3 This is a perspective view of the roller of the present invention.

[0023] Figure 4 This is a front view of the roller of the present invention.

[0024] Figure 5 This is a perspective view of the roller bracket, T-shaped rib, and limiting frame of the present invention.

[0025] Figure 6 This is a front view of the roller bracket, T-shaped rib, and limiting frame of the present invention.

[0026] Figure 7 This is a partial cross-sectional view of the outer airbag of the present invention.

[0027] Figure 8 This is a schematic diagram of the elliptical ring structure of the present invention.

[0028] In the diagram: 1. Steering wheel bracket; 2. Roller bracket; 3. Roller; 4. Airbag outer layer assembly; 41. Outer layer plate; 42. Outer airbag; 421. Middle area; 422. Edge area; 423. Diaphragm; 43. T-rib; 44. Limiting bracket; 5. Metal block; 6. Electromagnet; 7. Elastic plate; 8. Elliptical ring; 9. Bolt; 10. Arc plate; 11. Optical coupler; 12. Ratchet; 13. Transmission gear; 14. Gear shaft; 15. Gear spring. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] In addition, a fixed connection refers to a connection in which parts or components are fixed and there is no relative movement; a transmission connection refers to a connection in which mechanical motion or torque is transmitted to other working parts through a transmission component; a sliding connection refers to a connection in which two objects are in contact but not fixed and can slide relative to each other; and a rotational connection refers to a connection in which two objects are in contact but not fixed and can rotate relative to each other.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] Example 1: This embodiment provides a roller adjustment structure for a multi-function steering wheel switch, which has the following technical features.

[0034] Please see Figures 1-6 A roller adjustment structure for a multi-function steering wheel switch includes a steering wheel bracket 1, a roller bracket 2 movably mounted within the steering wheel bracket 1, and a roller 3 rotatably mounted on the roller bracket 2. It also includes an airbag outer layer assembly 4, which comprises: an outer layer plate 41, with multiple outer layer plates 41 circumferentially disposed outside the roller 3; an outer airbag 42 fixed to the side of the outer layer plate 41 near the roller 3; a T-shaped rib 43 fixed to the bottom of the roller bracket 2; and a limiting frame 44 fixed within the steering wheel bracket 1, with a limiting groove at the top. A radial clearance exists between the roller bracket 2 and the steering wheel bracket 1. The outer layer plate 41 has a bent portion extending into the roller 3, and the roller 3 has a straight groove for limiting the outer layer plate 41.

[0035] Working principle: There is a gap between the roller 3 on the steering wheel and the steering wheel bracket 1. The roller 3 generally has multiple operation modes, including pressing and flicking. Therefore, there is a need to prevent dust from entering the steering wheel through the gap between the roller 3 and the steering wheel, and also to prevent accidental operation while the roller is being pressed or flicked. The straight groove on the outer side of the roller 3 allows the outer layer plate 41 to slide along the inner wall of the groove when it is compressed, limiting the direction in which the outer layer plate 41 compresses the outer airbag 42. In this embodiment, when the roller 3 is compressed, it causes the outer layer plate 41, the roller bracket 2, and the T-shaped rib 43 to descend synchronously. The T-shaped rib 43 enters the limiting frame 44. Within the top limiting groove, the outer airbag 42 is deformed by the outer plate 41 and the roller 3, and applies pressure to the side wall of the roller bracket 2, pushing the roller bracket 2 to move the T-shaped rib 43 towards the side wall of the limiting frame 44, increasing the friction between the T-shaped rib 43 and the side wall of the limiting frame 44 to achieve locking. At the same time, the outer airbag 42 expands radially outward under the action of elastic deformation, sealing the annular gap between the roller 3 and the steering wheel bracket 1. The roller switch structure that integrates dustproof function and locking function into the same elastic airbag solves the problem that existing steering wheel rollers cannot simultaneously enhance dustproof sealing and operation locking performance through a single press operation.

[0036] Please see Figure 6The top of the limiting frame 44 has two arc-shaped grooves that are respectively connected to the two sides of the limiting groove. The radius of the arc-shaped grooves is the same as the rotation radius of the T-shaped rib 43.

[0037] Working principle: Roller 3 has both pressing and flicking operation modes. When roller 3 is pressed, roller 3 drives roller bracket 2 and T-shaped rib 43 to descend synchronously. T-shaped rib 43 enters the limiting frame 44. At this time, the bottom of roller bracket 2 cannot move along the width of roller bracket 2 because T-shaped rib 43 is limited by the limiting frame 44. At this time, roller 3 can only be rotated and cannot be flicked along the width direction of roller bracket 2. When roller 3 is not pressed, T-shaped rib 43 at the bottom of roller 3 is above the limiting frame 44. When roller 3 needs to be turned, roller 3 drives roller bracket 2 and T-shaped rib 43 to rotate synchronously. The bottom of T-shaped rib 43 slides along the inner wall of the arc groove. At this time, the bottom of T-shaped rib 43 is supported by the inner wall of the arc groove and cannot be pressed down. This realizes a two-way mechanical interlock between locking the turning state when pressed and locking the pressing state when turned. When the outer airbag 42 is pressed, the elastic deformation pushes T-shaped rib 43 to squeeze the inner wall of the limiting frame 44 to strengthen the locking degree, further enhancing the anti-misoperation effect of roller 3 for different functions.

[0038] Please see Figure 2 An optical coupler 11 is fixedly connected inside the steering wheel bracket 1, and a ratchet 12 is rotatably connected inside the optical coupler 11. A transmission gear 13 is connected between the roller 3 and the ratchet 12.

[0039] Working principle: When roller 3 is rotated, roller 3 drives ratchet 12 to rotate through transmission gear 13. When ratchet 12 blocks optocoupler 11, the signal of optocoupler 11 cannot be transmitted. When the gap of ratchet 12 passes through optocoupler 11, optocoupler 11 is not blocked and optocoupler 11 can transmit signals. The rotation of ratchet 12 causes optocoupler 11 to transmit signals intermittently, converting the mechanical rotation of roller 3 into an electrical signal, which facilitates the control of functions such as volume adjustment.

[0040] Please see Figure 2 A gear shift shaft 14 is fixedly connected to the pivot of the roller 3, and a gear shift spring 15 is fixedly connected to the roller bracket 2. One end of the gear shift spring 15 presses against the gear shift shaft 14.

[0041] Working principle: When the roller 3 rotates, it drives the gear shaft 14 to rotate synchronously. The gear shaft 14 repeatedly contacts and passes over the gear spring 15, producing a tactile feedback and sound feedback, thus improving the feel of the roller 3 when it rotates.

[0042] Example 2: This embodiment provides a roller adjustment structure for a multi-function steering wheel switch, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0043] Please see Figures 1-7 The outer airbag 42 includes a middle area 421 away from the mounting hole wall of the steering wheel bracket 1 and an edge area 422 close to the mounting hole wall of the steering wheel bracket 1. A diaphragm 423 for separating the middle area 421 and the edge area 422 is fixedly connected inside the outer airbag 42. Multiple ventilation holes are provided on the diaphragm 423. When the outer airbag 42 is squeezed and deformed, the edge area 422 expands and applies a compressive force to the side wall of the roller bracket 2, pushing the roller bracket 2 to drive the T-shaped rib 43 to move towards the side wall of the limiting frame 44.

[0044] Working principle: When roller 3 is pressed, the middle area 421 and the edge area 422 are compressed simultaneously, the internal air pressure increases, and the vent hole produces a throttling effect. The air pressure flows from the middle area 421 to the edge area 422 through the vent hole, and the edge area 422 squeezes the side wall of the roller support 2 from both sides. When roller 3 is released, the outer air bag 42 elastically recovers, and the gas in the edge area 422 slowly flows back to the middle area 421 through the vent hole. The gas is obstructed when flowing through the vent hole, converting part of the kinetic energy during operation into a uniform and controllable resistance, providing a damping feel during operation, thereby improving the operating feel.

[0045] Example 3: This embodiment provides a roller adjustment structure for a multi-function steering wheel switch, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0046] Please see Figures 1-8 A metal block 5 is fixedly connected to the outer plate 41 near the roller 3. A receiving groove is opened on the side of the roller 3, and an electromagnet 6 is installed in the receiving groove.

[0047] When it is necessary to enhance the dustproof effect at the gap between the roller 3 and the steering wheel bracket 1, the electromagnet 6 can be energized. The electromagnet 6 and the metal block 5 will generate a magnetic attraction, attracting the metal block 5 to move towards the roller 3. The metal block 5 will drive the outer plate 41 to squeeze the outer airbag 42, so that the outer airbag 42 is squeezed in its natural state when it is not pressed. After being squeezed, the outer airbag 42 expands to a greater extent, and the outer airbag 42 can better fill the gap between the roller 3 and the steering wheel bracket 1. The magnetic force can be used to increase the degree of expansion of the outer airbag 42 when it is squeezed, so that the outer airbag 42 can better cover the gap between the roller 3 and the steering wheel bracket 1, thereby better preventing dust from entering the steering wheel from the gap between the roller 3 and the steering wheel bracket 1.

[0048] Please see Figure 3 , Figure 4 and Figure 8An elastic plate 7 is fixedly connected to one side of the inner wall of the receiving groove. An electromagnet 6 is fixed on the elastic plate 7. An elliptical ring 8 for limiting the elastic plate 7 is fixedly connected to the side of the roller 3. A bolt 9 that passes through the elliptical ring 8 is provided on the inner side of the elliptical ring 8. An arc plate 10 is rotatably connected to one end of the bolt 9 that extends to the outside of the elliptical ring 8.

[0049] In practical use, the elastic force of the elastic plate 7 is greater than the weight of the electromagnet 6, ensuring that the bending deformation of the elastic plate 7 caused by the electromagnet 6 due to its own weight is negligible. The elliptical ring 8 is attached to one side of the roller 3, with its axis below the axis of the roller 3. When the elastic plate 7 rotates to its lowest point with the roller 3, it moves downwards after being limited by the elliptical ring 8, causing the electromagnet 6 on the elastic plate 7 to approach the corresponding outer plate 41 and metal block 5. The curved plate 10 can be lowered by rotating the bolt 9, causing the elastic plate 7 to contact and be limited by the curved plate 10, thereby adjusting the bending amplitude of the elastic plate 7 after being limited. Since the outer plate 41 is affected by its own weight... The force influences the downward movement, resulting in a shorter distance between the outer plate 41 and metal block 5 at the highest point of roller 3 and electromagnet 6, and a longer distance between the outer plate 41 and metal block 5 at the lowest point of roller 3 and electromagnet 6. Therefore, when electromagnet 6 at the lowest point of roller 3 is limited and lowered by elliptical ring 8 and arc plate 10, the distance between the outer plate 41 and metal block 5 at the lowest point of roller 3 and electromagnet 6 is shortened, thereby reducing the difference in magnetic attraction force between the outer plate 41 at the highest and lowest points of roller 3 and metal block 5 and electromagnet 6. This makes the squeezing force of outer plate 41 on outer airbags 42 at different positions of roller 3 tend to be the same, thereby reducing the influence of gravity on the degree of squeezing of outer airbags 42.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A roller adjustment structure for a multi-function steering wheel switch, comprising a steering wheel bracket (1), a roller bracket (2) movably mounted within the steering wheel bracket (1), and a roller (3) rotatably mounted on the roller bracket (2), characterized in that, It also includes an outer airbag assembly (4), which comprises: Outer layer plate (41), a plurality of said outer layer plates (41) are circumferentially disposed on the outside of the roller (3); The outer airbag (42) is fixed to the outer plate (41) on the side near the roller (3); T-shaped ribs (43) are fixed to the bottom of the roller bracket (2); A limiting bracket (44) is fixed inside the steering wheel bracket (1), and the top of the limiting bracket (44) has a limiting groove; There is a radial movement gap between the roller bracket (2) and the steering wheel bracket (1). When the outer plate (41) is axially pressed, the outer plate (41) drives the roller (3) and the roller bracket (2) to descend synchronously, and drives the T-shaped rib (43) into the limiting groove at the top of the limiting frame (44). The outer airbag (42) is squeezed and deformed by the outer plate (41) and the roller (3) together, and applies a squeezing force to the side wall of the roller bracket (2), pushing the roller bracket (2) to drive the T-shaped rib (43) to move towards the side wall of the limiting frame (44), increasing the friction between the T-shaped rib (43) and the side wall of the limiting frame (44) to achieve locking. At the same time, the outer airbag (42) expands radially outward under the action of elastic deformation, sealing the annular gap between the roller (3) and the steering wheel bracket (1).

2. The roller adjustment structure of a multi-function steering wheel switch according to claim 1, characterized in that, The outer plate (41) has a bent portion extending into the roller (3), and the roller (3) has a straight groove for limiting the outer plate (41).

3. The roller adjustment structure of a multi-function steering wheel switch according to claim 1, characterized in that, The outer airbag (42) includes a middle area (421) away from the mounting hole wall of the steering wheel bracket (1) and an edge area (422) close to the mounting hole wall of the steering wheel bracket (1). A diaphragm (423) for separating the middle area (421) and the edge area (422) is fixedly connected inside the outer airbag (42). The diaphragm (423) has multiple ventilation holes. When the outer airbag (42) is squeezed and deformed, the edge area (422) expands and applies a compressive force to the side wall of the roller bracket (2), pushing the roller bracket (2) to drive the T-shaped rib (43) to move towards the side wall of the limiting frame (44).

4. The roller adjustment structure of a multi-function steering wheel switch according to claim 1, characterized in that, The top of the limiting frame (44) is provided with two arc-shaped grooves that are respectively connected to the two sides of the limiting groove. The radius of the arc-shaped grooves is the same as the rotation radius of the T-shaped rib (43).

5. The roller adjustment structure of a multi-function steering wheel switch according to claim 1, characterized in that, The outer plate (41) is fixedly connected to a metal block (5) on the side near the roller (3). The roller (3) has a receiving groove on its side, and an electromagnet (6) is provided in the receiving groove.

6. The roller adjustment structure of a multi-function steering wheel switch according to claim 5, characterized in that, An elastic plate (7) is fixedly connected to one side of the inner wall of the receiving groove, the electromagnet (6) is fixed on the elastic plate (7), and an elliptical ring (8) for limiting the elastic plate (7) is fixedly connected to the side of the roller (3).

7. The roller adjustment structure of a multi-function steering wheel switch according to claim 6, characterized in that, The inner side of the elliptical ring (8) is provided with a bolt (9) that passes through the elliptical ring (8), and one end of the bolt (9) extending to the outside of the elliptical ring (8) is rotatably connected to an arc plate (10).

8. The roller adjustment structure of a multi-function steering wheel switch according to claim 1, characterized in that, The steering wheel bracket (1) is fixedly connected to an optical coupler (11), and a ratchet (12) is rotatably connected inside the optical coupler (11). A transmission gear (13) is connected between the roller (3) and the ratchet (12).

9. The roller adjustment structure of a multi-function steering wheel switch according to claim 1, characterized in that, A gear shift shaft (14) is fixedly connected to the pivot of the roller (3), and a gear shift spring (15) is fixedly connected to the roller bracket (2). One end of the gear shift spring (15) presses against the gear shift shaft (14).

Images