Roller assembly and automobile steering wheel roller switch

Abstract

The utility model relates to a kind of roller assembly and car steering wheel roller switch, involve car steering wheel technical field.Roller switch includes installation shell and roller assembly, and roller assembly includes roller support and roller body, output shaft is rotatably equipped on roller support, roller body passes roller axle, main gear, transmission gear and gear and drives output shaft rotation, transmission gear is limited by limiting structure, when using, roller body is driven to rotate roller axle, to drive output shaft rotation, the power output of roller body is realized by the transmission ratio between main gear, transmission gear and output gear, limiting structure is limited to transmission gear, reduce the probability that transmission gear sliding appears position deviation, improve the stability of transmission gear, to improve the stability and convenience of roller adjustment, compact structure, improve the roller use effect, and thus improve the overall use effect of car steering wheel roller switch.

Description

Technical Field

[0001] This utility model relates to the field of automotive steering wheel technology, and in particular to a roller assembly and an automotive steering wheel roller switch. Background Technology

[0002] As an important human-machine interface in automobiles, the steering wheel integrates functions such as horn, volume control and mode switching for the entertainment system, as well as on-board computer control, cruise control, and gear control. Based on the needs of automobile development and the need for ease of operation, especially in the entertainment system, a roller switch has been added for the volume control or up / down selection functions, making operation more convenient and smooth. This is mainly achieved by using an encoder to sense the direction and position of the roller, thereby realizing the adjustment of the corresponding function.

[0003] In related technologies, reference can be made to Chinese utility model patent with authorization announcement number CN210575682U, which discloses a roller switch limiting structure for an automobile steering wheel, including a circuit board component, a photoelectric switch, and a roller assembly disposed in the housing. The photoelectric switch has a sensing groove. The roller assembly includes a roller bracket disposed in the housing under force, a roller rotatably disposed on the roller bracket, and a transmission rod disposed at one end of the roller. The transmission rod is provided with a sensing element that can move in and out of the sensing groove as the roller rotates. It also includes a limiting rod structure disposed between the bottom plate of the housing and the transmission rod.

[0004] The limiting rod structure works in conjunction with the transmission rod to limit the downward pressure distance of the transmission rod, thus preventing the transmission rod and its sensing element from contacting the photoelectric switch during downward pressure and avoiding damage to the photoelectric switch, thereby ensuring the safe use of the photoelectric switch. However, the switch sensing component of this structure is directly mounted on the transmission rod extending from the roller axle. On the one hand, the roller rotation stroke directly reflects the signal switching rate, making it impossible to control the switch switching sensitivity and affecting the switch operation feel. On the other hand, the roller and sensing element are arranged axially, resulting in a large lateral area occupied by the switch, which is not conducive to installation and layout. Utility Model Content

[0005] To address the above problems, this utility model provides a roller assembly and a car steering wheel roller switch.

[0006] The first aspect of this application provides a roller assembly, which adopts the following technical solution:

[0007] A roller assembly and a car steering wheel roller switch include a roller bracket and a roller body rotatably disposed within the roller bracket via a roller shaft. A main gear is coaxially fixed on the roller shaft. An output shaft is rotatably disposed on the roller bracket. An output gear is coaxially disposed on the output shaft. The output gear is connected to the main gear via a transmission gear. The transmission gear is rotatably disposed on the roller bracket and limited by a limiting structure.

[0008] By adopting the above technical solution, the roller body is driven to rotate, which in turn drives the main gear to rotate. The main gear drives the output gear to rotate through the transmission gear, and the output gear drives the output shaft to rotate. The power output of the roller body is achieved through the transmission ratio between the main gear, the transmission gear, and the output gear, thereby enabling flexible adjustment. During rotation, the limiting structure limits the transmission gear, reducing the probability of positional deviation due to transmission gear slippage and improving the stability of the transmission gear. This, in turn, improves the stability and convenience of roller adjustment and enhances the roller's performance.

[0009] Optionally, the roller bracket is provided with a transmission groove, the transmission gear is rotatably disposed in the transmission groove, and the limiting structure is disposed on the inner wall of the transmission groove.

[0010] By adopting the above technical solution, the transmission groove supports the transmission gear and initially limits its movement, and the limiting structure further limits the transmission gear, thereby improving the stability of the transmission gear during transmission.

[0011] Optionally, the limiting structure includes a limiting protrusion, which is fixed on the inner wall of the transmission groove and abuts against the side wall of the transmission gear.

[0012] By adopting the above technical solution, the limiting protrusion abuts against the side wall of the transmission gear, reducing the probability of displacement of the transmission gear, thereby improving the stability of the transmission gear during the transmission process, and thus improving the stability of the roller power output.

[0013] Optionally, the axes of the main gear, the transmission gear, and the output shaft are parallel to each other, and the diameter of the transmission gear is larger than the diameters of the main gear and the output gear.

[0014] By adopting the above technical solution, the flexibility of roller adjustment is increased, and the structure is compact, reducing the space occupied during installation.

[0015] Optionally, a sensor is provided on the output shaft.

[0016] By adopting the above technical solution, the rotation of the output shaft drives the rotation of the sensing element, thereby realizing the control output.

[0017] A second aspect of this application provides an automotive steering wheel roller switch, including a mounting housing and a roller assembly as described in any one of the above claims. The roller assembly is mounted on the mounting housing, and an optocoupler is provided inside the mounting housing. The optocoupler cooperates with a sensing element to output a signal.

[0018] By adopting the above technical solution, power output is achieved through the roller assembly, and the function is adjusted by the cooperation of the sensor and optocoupler, thereby improving the performance of the car steering wheel roller switch.

[0019] Optionally, the optocoupler has a sensing groove facing the sensing element, the sensing element being a light-blocking tooth with multiple protrusions. When the light-blocking tooth rotates, the multiple protrusions pass through the sensing groove in sequence, and the optocoupler is triggered when the protrusions enter and exit the sensing groove.

[0020] By adopting the above technical solution, the output shaft rotates, causing the light-blocking teeth to rotate synchronously. The rotation of the light-blocking teeth causes multiple protruding teeth to pass through the sensing groove in sequence. When the protruding teeth enter and exit the sensing groove, they trigger the optocoupler to achieve signal output. The corresponding function can be adjusted by the rotation direction and speed of the light-blocking teeth, thereby improving the performance of the car steering wheel roller switch.

[0021] Optionally, the mounting housing has a limiting space for mounting the roller bracket, and the limiting space is adapted to the shape of the roller bracket.

[0022] By adopting the above technical solution, the limiting space limits the roller bracket, thereby improving the stability of the roller bracket.

[0023] Optionally, the roller bracket is provided with a roller cover, and the roller cover has a clearance opening for the convex spherical surface of the roller body to pass through, and the left and right inner walls of the clearance opening abut against the left and right outer walls of the roller body.

[0024] By adopting the above technical solution, the clearance opening limits the roller body, thereby improving the stability of the roller body's rotation and the feel of use.

[0025] Optionally, the bottom wall of the mounting housing is provided with a rubber pad, and the bottom end of the roller bracket is fixed to the rubber pad.

[0026] By adopting the above technical solution, the rubber pads buffer and dampen the roller bracket, improving the stability of the roller body during use.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. Rotating the roller body drives the roller shaft to rotate, which in turn drives the main gear to rotate. The main gear, through the transmission gear, drives the output gear to rotate, which in turn drives the output shaft to rotate. The power output of the roller body is achieved through the transmission ratio between the main gear, the transmission gear, and the output gear, thus enabling flexible adjustment. During rotation, the limiting structure limits the transmission gear, reducing the probability of positional deviation due to slippage and improving the stability of the transmission gear. This, in turn, improves the stability and convenience of roller adjustment and enhances the roller's performance.

[0029] 2. The transmission groove supports and initially limits the transmission gear. The limiting protrusion abuts against the side wall of the transmission gear, reducing the probability of displacement of the transmission gear, thereby improving the stability of the transmission gear during the transmission process, and thus improving the stability of the roller power output.

[0030] 3. The roller body is limited by the clearance opening on the roller cover, thereby improving the stability of the roller body rotation and the feel of use. Combined with the roller assembly, this improves the overall performance of the car steering wheel roller switch. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the roller assembly of this application;

[0032] Figure 2 This is a top view of the roller assembly in this application;

[0033] Figure 3 yes Figure 2 Enlarged diagram of section A in the middle;

[0034] Figure 4 This is a schematic diagram of the overall structure of the automotive steering wheel roller switch of this application;

[0035] Figure 5 This is a schematic diagram of the structure for mounting the housing in this application;

[0036] Figure 6 This is an exploded view of the roller assembly, circuit board, and rubber pad in this application;

[0037] Figure 7 This is a schematic diagram of the roller cover in this application.

[0038] Reference numerals: 1. Roller assembly; 2. Roller bracket; 21. Roller shaft; 211. Main gear; 212. Output gear; 213. Transmission gear; 22. Output shaft; 23. Transmission groove; 24. Roller cover; 241. Alternating opening; 3. Roller body; 4. Limiting protrusion; 5. Sensor; 51. Light-blocking tooth; 511. Protruding tooth; 6. Mounting housing; 61. Circuit board; 62. Limiting space; 63. Rubber pad; 7. Optical coupler; 71. Sensing groove; 8. Press panel; 81. Operation port; 9. Decorative panel. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0040] This application discloses a roller assembly and an automotive steering wheel roller switch.

[0041] Reference Figure 1 and Figure 2A roller assembly 1 includes a roller bracket 2 and a roller body 3 rotatably disposed within the roller bracket 2 via a roller shaft 21. A main gear 211 is coaxially fixed on the roller shaft 21. An output shaft 22 is rotatably disposed on the roller bracket 2. An output gear 212 is coaxially disposed on the output shaft 22. The output gear 212 is connected to the main gear 211 via a transmission gear 213. The transmission gear 213 is rotatably disposed on the roller bracket 2 and is limited by a limiting structure.

[0042] Reference Figure 1 and Figure 2 The roller bracket 2 is provided with a transmission groove 23, and the transmission gear 213 is rotatably disposed in the transmission groove 23. The diameter of the transmission gear 213 is larger than the diameter of the main gear 211 and the output gear 212. The limiting structure is provided on the inner wall of the transmission groove 23. The axes of the main gear 211, the transmission gear 213 and the output shaft 22 are parallel to each other. The output shaft 22 is provided with a sensing element 5. The transmission gear 213, the output gear 212, the output shaft 22 and the sensing element 5 are all located on the lower side of the roller body 3, thereby saving installation space and improving the compactness of the structure.

[0043] Reference Figure 1 , Figure 2 and Figure 3 The limiting structure includes a limiting protrusion 4, which is fixed on the inner wall of the transmission gear and abuts against the side wall of the transmission gear 213.

[0044] Reference Figure 1 , Figure 4 and Figure 5 A car steering wheel roller switch includes a mounting housing 6 and the roller assembly 1 described above. In this embodiment, there are two mounting housings 6 and two roller assemblies 1. The two mounting housings 6 are located on both sides of the steering wheel, and the roller assembly 1 corresponds to the mounting housing 6 one-to-one.

[0045] Reference Figure 4 , Figure 5 and Figure 6 The following description focuses on the mounting housing 6 and roller assembly 1 on one side. The roller assembly 1 is installed inside the mounting housing 6, and the mounting housing 6 is equipped with an optocoupler 7. The optocoupler 7 works with the sensing element 5 to output signals.

[0046] Reference Figure 4 , Figure 5 and Figure 6 A circuit board 61 is fixed on the bottom wall of the mounting housing 6, and the mounting housing 6 has a limiting space 62 for mounting the roller bracket 2. The limiting space 62 is adapted to the shape of the roller bracket 2. A rubber pad 63 is covered on the circuit board 61. The rubber pad 63 is conductive rubber, and the bottom end of the roller bracket 2 is fixed to the rubber pad 63.

[0047] Reference Figure 1and Figure 6 The optocoupler 7 is fixed on the circuit board 61 and has a sensing groove 71 facing the sensing element 5. The sensing element 5 is a light-blocking tooth 51 with multiple protrusions 511. When the light-blocking tooth 51 rotates, the multiple protrusions 511 pass through the sensing groove 71 in sequence. The optocoupler 7 is triggered when the protrusions 511 enter and exit the sensing groove 71.

[0048] The optocoupler 7 is the optocoupler sensor in the prior art. The optocoupler sensor has an emitting end and a receiving end, which are located on the two inner side walls of the sensing groove 71, respectively. When the roller body 3 rotates, the main gear 211, transmission gear 213 and output gear 212 drive the output shaft 22 to rotate. The output shaft 22 drives the light-blocking tooth 51 to rotate. The emitting end emits a light signal. After passing through the rotating light-blocking tooth 51, the light is blocked and transmitted by the convex tooth 511. The receiving end receives the light signal and converts it into an electrical signal and sends it to the circuit board 61 or controller. In this way, the rotation direction and speed of the roller body 3 are converted into different signal outputs to realize different functional controls, such as volume increase and decrease in the entertainment system.

[0049] Reference Figure 4 , Figure 6 and Figure 7 The roller bracket 2 is also provided with a roller cover 24, which has a clearance opening 241 for the convex spherical surface of the roller body 3 to pass through. The left and right inner walls of the clearance opening 241 abut against the left and right outer walls of the roller body 3.

[0050] Reference Figure 4 , Figure 5 and Figure 6 The automotive steering wheel roller switch also includes a pressing panel 8 located above the mounting housing 6 and a decorative panel 9 located outside the mounting housing 6. The pressing panel 8 has a convex spherical surface for the roller body 3 and an operating opening 81 for part of the roller cover 24 to extend out. The pressing panel 8 shields and protects the roller bracket 2, and the decorative panel 9 shields, protects and decorates the mounting housing 6 and the pressing panel 8, thereby improving the service life of the steering wheel roller switch.

[0051] Reference Figure 2 , Figure 4 and Figure 6In use, the operator slides the roller body 3, and the stop 241 limits the roller body 3, improving the stability of the roller body 3's rotation and the feel of use. The rotation of the roller body 3 drives the roller shaft 21 to rotate, and the rotation of the roller shaft 21 drives the main gear 211 to rotate in the same direction. The main gear 211 drives the transmission gear 213 to rotate, and the transmission gear 213 drives the output shaft 22 to rotate through the output gear 212, thereby driving the sensor 5 to rotate. The three-gear transmission setting takes into account the compactness of the structure and the ease of diameter control of the roller body 3, thereby improving the flexibility of the roller switch adjustment. During this process, the limit protrusion 4 limits the position of the transmission gear 213, improving the stability of the transmission gear 213, thereby improving the stability of the power output. The optocoupler 7 works with the sensor 5 to realize the signal output, thereby realizing the control function of the roller switch, improving the stability of the rotation of the roller body 3 and the feel of use, and thus improving the overall use effect of the car steering wheel roller switch.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A roller assembly, characterized in that: It includes a roller bracket (2) and a roller body (3) rotatably disposed in the roller bracket (2) via a roller shaft (21). A main gear (211) is coaxially fixed on the roller shaft (21). An output shaft (22) is rotatably disposed on the roller bracket (2). An output gear (212) is coaxially disposed on the output shaft (22). The output gear (212) is connected to the main gear (211) via a transmission gear (213). The transmission gear (213) is rotatably disposed on the roller bracket (2) and is limited by a limiting structure.

2. The roller assembly according to claim 1, characterized in that: The roller bracket (2) is provided with a transmission groove (23), the transmission gear (213) is rotatably disposed in the transmission groove (23), and the limiting structure is disposed on the inner wall of the transmission groove (23).

3. The roller assembly according to claim 2, characterized in that: The limiting structure includes a limiting protrusion (4), which is fixed on the inner wall of the transmission groove (23) and abuts against the side wall of the transmission gear (213).

4. The roller assembly according to claim 2, characterized in that: The axes of the main gear (211), the transmission gear (213) and the output shaft (22) are parallel to each other, and the diameter of the transmission gear (213) is larger than that of the main gear (211) and the output gear (212).

5. The roller assembly according to claim 4, characterized in that: The output shaft (22) is equipped with a sensor (5).

6. A car steering wheel roller switch, characterized in that: The device includes a mounting housing (6) and a roller assembly as described in any one of claims 1-5. The roller assembly (1) is mounted on the mounting housing (6). An optocoupler (7) is provided inside the mounting housing (6). The optocoupler (7) cooperates with the sensing element (5) to realize the output of a signal.

7. The automotive steering wheel roller switch according to claim 6, characterized in that: The optocoupler (7) has a sensing groove (71) facing the sensing element (5). The sensing element (5) is a light-blocking tooth (51) with multiple protrusions (511). When the light-blocking tooth (51) rotates, the multiple protrusions (511) pass through the sensing groove (71) in sequence. The optocoupler (7) is triggered when the protrusions (511) enter and exit the sensing groove (71).

8. The automotive steering wheel roller switch according to claim 6, characterized in that: The mounting housing (6) has a limiting space (62) for mounting the roller bracket (2), and the limiting space (62) is adapted to the shape of the roller bracket (2).

9. The automotive steering wheel roller switch according to claim 8, characterized in that: The roller bracket (2) is provided with a roller cover (24), and the roller cover (24) has a clearance opening (241) for the convex spherical surface of the roller body (3) to pass through. The left and right inner walls of the clearance opening (241) abut against the left and right outer walls of the roller body (3).

10. The automotive steering wheel roller switch according to claim 8, characterized in that: The bottom wall of the mounting housing (6) is provided with a rubber pad (63), and the bottom end of the roller bracket (2) is fixed to the rubber pad (63).

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