Roller switch with grating impeller

Abstract

The utility model relates to a roller switch with a grating impeller, which comprises a circuit board, a roller switch, a shell used for installing the roller switch and a gear shaft, and the gear shaft comprises a transmission gear, an impeller and a transmission rod used for fixedly connecting the transmission gear and the impeller. The shell is provided with a first matching hole and a second matching hole which are used for the transmission rod to penetrate through and rotate, the transmission rod comprises a wheel part attached to the inner wall of the first matching hole, and the second matching hole is provided with an opening for the transmission rod to laterally enter. By the adoption of the technical scheme, when the transmission gear located at one end of the transmission rod penetrates through the first matching hole in an oblique insertion assembly mode, the other end of the transmission rod can be laterally plugged into the second matching hole through the opening, installation of the gear shaft can be achieved, meanwhile, the first matching hole is of a circumferential closed structure, and the gear shaft can be installed conveniently. When the gear shaft can rotate in the first matching hole, the gear shaft cannot move in the radial direction and fall off.

Description

Technical Field

[0001] The utility model belongs to the technical field of roller switches, in particular to a roller switch with a grating impeller. Background Art

[0002] The grating impeller on the steering wheel is a key electronic component that uses optical technology to accurately monitor the movement of the steering wheel. Its application in modern automobiles improves driving safety and comfort, and also provides a foundation for the intelligence and automation of vehicles.

[0003] Steering wheel switch rollers on the market usually have open structures at both ends for easy installation. However, during use, the gear shaft used for grating detection may fall off, thereby affecting the accuracy of grating detection. Summary of the Invention

[0004] The purpose of the utility model is to overcome the defects of the prior art, and provide a roller switch with a grating impeller, which solves the problem that the gear shaft for grating detection in the grating impeller may fall off when being driven.

[0005] The technical solution of the utility model is: a roller switch with a grating impeller, comprising a circuit board, a roller switch, a housing for mounting the roller switch, a grating detection device mounted on the circuit board, and a gear shaft for being detected by the grating detection device, the gear shaft comprising a transmission gear, an impeller, and a transmission rod for fixedly connecting the transmission gear and the impeller, a driving gear fixedly provided at one end of the roller switch, the driving gear driving the gear shaft to rotate through a transmission structure, the gear shaft passing through the housing, and the impeller being located at the detection position of the grating detection device;

[0006] The shell includes a first matching hole and a second matching hole for the transmission rod to pass through and rotate. The transmission rod includes a wheel portion that fits with the inner wall of the first matching hole. The second matching hole is provided with an opening for the transmission rod to enter laterally.

[0007] By adopting the above technical solution, of the first matching hole and the second matching hole for assembling the gear shaft, only the second matching hole is provided with an opening. By means of an oblique insertion assembly method, the transmission gear located at one end of the transmission rod can be passed through the first matching hole, and at the same time, the other end of the transmission rod can be placed laterally through the opening and inserted into the second matching hole, so that the installation of the gear shaft can be realized. At the same time, the first matching hole is a circumferentially closed through-hole structure. While satisfying that the gear shaft can rotate in the first matching hole, it cannot move in the radial direction and fall off, and the wheel part fits with the inner wall of the first matching hole, so that the transmission rod placed at one end of the second matching hole cannot move in the radial direction, so that both ends of the transmission rod cannot fall off the housing, thereby preventing the gear shaft from falling off the housing when driven to rotate, thereby enhancing the stability of the gear shaft and avoiding affecting the grating detection accuracy.

[0008] A further configuration of the present invention is that the transmission rod further includes a limiting portion for limiting the gear shaft from sliding along the direction of the transmission rod, and the limiting portion includes two limiting ends located at both ends of the second matching hole.

[0009] By adopting the above-mentioned further setting, by setting two limiting ends of the limiting part, it is possible to prevent the gear shaft from sliding along the direction of the transmission rod and causing the gear shaft to fall off the shell. The transmission rod can be pressed in laterally to achieve the two limiting ends being respectively located at the two ends of the second matching hole, which is simple to install.

[0010] A further configuration of the present invention is that the transmission structure includes an intermediate gear rotatably arranged with the housing, the tooth diameter of the intermediate gear is larger than the driving gear and the transmission gear, and the intermediate gear is respectively meshed with the transmission gear and the driving gear.

[0011] By adopting the above further configuration, by providing an intermediate gear with a tooth diameter much larger than that of the driving gear and the transmission gear, it is prevented that the driving gear or the transmission gear tooth diameter is too large, resulting in the impeller speed being too high or too low, thereby affecting the accuracy of the grating detection.

[0012] A further configuration of the present invention is that the first matching hole is a circular hole structure, and its circular diameter is larger than the diameter of the transmission gear.

[0013] With the above further arrangement, the first matching hole is a circular hole structure to facilitate the rotation of the wheel part therein, and its diameter can allow the transmission gear to pass straight through, avoiding collision when the wheel axle is inserted into the first matching hole for installation to affect the engagement of the transmission gear and the driving gear.

[0014] The present invention is further configured as follows: the roller switch includes a fixed end engaged with the housing, a sleeve rotatably arranged outside the fixed end, and a gear shaft inserted into and engaged with the sleeve; the gear shaft is fixed to or integrally provided with the driving gear.

[0015] With the above further arrangement, the sliding scroll switch can drive the gear shaft to move, thereby controlling the rotation of the driving gear, thereby realizing the rotation control of the impeller, thereby realizing the grating to detect the rotation of the impeller, and thus obtaining the rotation amplitude of the scroll switch.

[0016] The present invention is further configured as follows: a roller is fixedly mounted outside the sleeve, and anti-skid patterns are arranged on the outside of the roller.

[0017] By further adopting the above configuration, a roller with anti-skid patterns is provided, so that the manual operation of the rolling switch is more precise and the hand feeling is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the housing in a specific embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the overall structure of the gear shaft in a specific embodiment of the present utility model;

[0021] Figure 4 This is a side structural diagram of a specific embodiment of the utility model;

[0022] Figure 5 for Figure 4 Schematic diagram of the AA section structure;

[0023] Figure 6 for Figure 4 Schematic diagram of the BB cross-section structure.

[0024] In the figure: 1. circuit board; 2. roller switch; 21. fixed end; 22. sleeve; 23. gear shaft; 24. roller; 3. housing; 31. first matching hole; 32. second matching hole; 33. opening; 4. grating detection device; 5. gear shaft; 51. transmission gear; 52. impeller; 53. transmission rod; 54. wheel part; 55. limit part; 56. limit end; 6. driving gear; 7. intermediate gear. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in this embodiment with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] It should be noted that in the description of the present invention, all directional indications (such as up, down, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being described. In the description of this utility model, "several" means at least two, such as two or three, unless otherwise specifically defined.

[0028] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that technical personnel in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0029] like Figure 1-6 As shown, a roller switch with a grating impeller includes a circuit board 1, a roller switch 2, a housing 3 for mounting the roller switch 2, a grating detection device 4 mounted on the circuit board 1, and a gear shaft 5 passing through the housing 3.

[0030] The roller switch 2 includes a fixed end 21 that is engaged with the housing 3, a sleeve 22 that is rotatably arranged outside the fixed end 21, and a gear shaft 23 that is inserted and engaged in the sleeve 22. A roller 24 is fixedly sleeved outside the sleeve 22, and the roller 24 is provided with anti-slip grooves on the outside, so that the manual operation of the rolling switch is more precise and the feel is better. The gear shaft 23 is rotatably arranged with the housing 3, and a driving gear 6 is integrally provided on the gear shaft 23.

[0031] The gear shaft 5 includes a transmission gear 51 , an impeller 52 and a transmission rod 53 for fixedly connecting the transmission gear 51 and the impeller 52 . The impeller 52 is located at the detection position of the grating detection device 4 .

[0032] The driving gear 6 drives the gear shaft 5 to rotate through the transmission structure. The transmission structure includes an intermediate gear 7 rotatably arranged with the housing 3. The tooth diameter of the intermediate gear 7 is larger than that of the driving gear 6 and the transmission gear 51. The intermediate gear 7 is meshed with the transmission gear 51 and the driving gear 6 respectively.

[0033] The transmission ratio is controlled by setting the intermediate gear 51 with a tooth diameter much larger than that of the driving gear 6 and the transmission gear 51 to prevent the driving gear 6 or the transmission gear 51 from having too large a tooth diameter, which would cause the impeller 52 to rotate too high or too low, thereby affecting the accuracy of the grating's detection of the impeller 52's rotation.

[0034] The housing 3 includes a first matching hole 31 and a second matching hole 32 for the transmission rod 53 to pass through. The transmission rod 53 can rotate in the first matching hole 31 and the second matching hole 32. The first matching hole 31 is a closed circular hole structure to facilitate the rotation of the wheel portion 54 therein and prevent it from radially dislodging. Its diameter is capable of allowing the transmission gear 51 to pass straight through, avoiding collision when the wheel shaft 5 is inserted into the first matching hole 31 for installation, thereby affecting the engagement of the transmission gear 51 with the driving gear 6.

[0035] The second mating hole 32 is provided with an opening 33 for the transmission rod 53 to enter laterally. The transmission rod 53 includes a wheel portion 54 that is in contact with the inner wall of the first mating hole 31 and a limiting portion 55 for limiting the sliding of the gear shaft 5 along the direction of the transmission rod 53. The limiting portion 55 includes two limiting ends 56 at both ends of the second mating hole 32.

[0036] By setting two limiting ends 56 of the limiting portion 55, both limiting ends 56 cannot pass through the second matching hole 31, so as to limit the part of the transmission rod 53 located in the middle of the two limiting ends 56 to the second matching hole 31, which can prevent the gear shaft 5 from sliding along the direction of the transmission rod 53 and causing the gear shaft 5 to fall off from the shell 3. The transmission rod 53 can be pressed in laterally to realize that the two limiting ends 56 are respectively located at the two ends of the second matching hole 32, which is simple to install.

[0037] Specifically, sliding the scroll switch 2 can drive the gear shaft 23 to move, thereby controlling the rotation of the driving gear 6, which is then transmitted through the intermediate gear 7 to rotate the transmission gear 51, thereby driving the impeller 52 to rotate through the transmission rod 53. The impeller 52 is at the detection position of the grating detection device 4, and the rotation angle of the scroll switch 2 can be obtained by measuring the rotation angle of the impeller 52.

[0038] In this embodiment, of the first and second mating holes 31 and 32 for assembling the gear shaft 5, only the second mating hole 32 is provided with an opening 33. The gear shaft 5 is installed by obliquely inserting the transmission gear 51 at one end of the transmission rod 53 through the first mating hole 31, and at the same time, the other end of the transmission rod 53 is obliquely pressed through the opening 33 and placed into the second mating hole 32.

[0039] Since the first matching hole 31 is a circumferentially closed circular through hole, while the gear shaft 5 can rotate in the first matching hole 31, the gear shaft 5 cannot move in the radial direction and fall off, and the wheel portion 54 is in contact with the inner wall of the first matching hole 31, so that the transmission rod 53 placed at one end of the second matching hole 32 cannot move in the radial direction, so that both ends of the transmission rod 53 cannot fall off the housing 3, thereby preventing the gear shaft 5 from falling off the housing 3 when driven to rotate, enhancing the stability of the gear shaft 5 and avoiding affecting the grating detection accuracy.

Claims

1. A roller switch with a grating impeller, comprising a circuit board (1), a roller switch (2), a housing (3) for mounting the roller switch (2), a grating detection device (4) mounted on the circuit board (1), and a gear shaft (5) for being detected by the grating detection device (4), wherein a driving gear (6) is fixedly provided at one end of the roller switch (2), and characterized in that: The gear shaft (5) includes a transmission gear (51), an impeller (52), and a transmission rod (53) for fixedly connecting the transmission gear (51) and the impeller (52); the driving gear (6) drives the gear shaft (5) to rotate through the transmission structure; the gear shaft (5) is passed through the housing (3); and the impeller (52) is located at the detection position of the grating detection device (4); The housing (3) includes a first matching hole (31) and a second matching hole (32) for a transmission rod (53) to pass through and rotate. The transmission rod (53) includes a wheel portion (54) that fits with the inner wall of the first matching hole (31). The second matching hole (32) is provided with an opening (33) for the transmission rod (53) to enter.

2. A roller switch with a grating impeller according to claim 1, characterized in that: The transmission rod (53) further includes a limiting portion (55) for limiting the gear shaft (5) from sliding along the direction of the transmission rod (53), and the limiting portion (55) includes two limiting ends (56) located at both ends of the second matching hole (32).

3. The roller switch with a grating impeller according to claim 1, characterized in that: The transmission structure comprises an intermediate gear (7) rotatably arranged with the housing (3); the tooth diameter of the intermediate gear (7) is larger than that of the driving gear (6) and the transmission gear (51); and the intermediate gear (7) is meshed with the transmission gear (51) and the driving gear (6) respectively.

4. The roller switch with a grating impeller according to claim 1, characterized in that: The first matching hole (31) is a circular through hole, allowing the transmission rod (53) to rotate in the first matching hole (31).

5. The roller switch with a grating impeller according to claim 4, characterized in that: The circular diameter of the first matching hole (31) is larger than the diameter of the transmission gear (51).

6. The roller switch with a grating impeller according to claim 1, characterized in that: The roller switch (2) comprises a fixed end (21) engaged with the housing (3), a sleeve (22) rotatably arranged outside the fixed end (21), and a gear shaft (23) inserted into and engaged with the sleeve (22). The gear shaft (23) is fixed to or integrally arranged with the driving gear (6).

7. The roller switch with a grating impeller according to claim 6, characterized in that: The outer fixed sleeve of the sleeve (22) is provided with a roller (24), and the outer surface of the roller (24) is provided with anti-skid patterns.

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