CN220785901U - Steering wheel rotation angle detection mechanism - Google Patents
Steering wheel rotation angle detection mechanism Download PDFInfo
- Publication number
- CN220785901U CN220785901U CN202322343609.6U CN202322343609U CN220785901U CN 220785901 U CN220785901 U CN 220785901U CN 202322343609 U CN202322343609 U CN 202322343609U CN 220785901 U CN220785901 U CN 220785901U
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- steering wheel
- driven
- driven gear
- gear
- tooth
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- 238000001514 detection method Methods 0.000 title claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 230000003313 weakening effect Effects 0.000 claims abstract description 12
- 229920003023 plastic Polymers 0.000 claims abstract description 8
- 239000004033 plastic Substances 0.000 claims abstract description 8
- 230000000903 blocking effect Effects 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 8
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 4
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000006399 behavior Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
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Abstract
The utility model discloses a steering wheel rotation angle detection mechanism which comprises a shell base, wherein a steering wheel rotating shaft is rotatably arranged on the shell base, a transmission part is fixedly sleeved at the lower part of the steering wheel rotating shaft, a driving gear is fixedly sleeved on the transmission part, a driven gear meshed with the driving gear is arranged on the outer side of the driving gear, the driven gear is rotatably arranged in the shell base, an angle sensor is arranged between the driven gear and the shell base, the driving gear and the driven gear are both plastic parts, the driven gear is provided with driven tooth parts distributed along the circumferential direction of the driven gear, each driven tooth part is provided with a deformation notch, the deformation notch extends inwards from the outer end of the driven tooth part, a driven tooth groove is formed between adjacent driven tooth parts, and a weakening notch is formed at the bottom of the driven tooth groove. The beneficial effects of the utility model are as follows: in order to solve the problem of noise and abnormal sound generated by the meshing of the driving gear and the driven gear in the running process of the steering system of the automobile.
Description
Technical Field
The utility model relates to a steering system structure, in particular to a steering wheel rotation angle detection mechanism.
Background
Automobiles are very popular as a transportation means, and detection of various parameters of the automobiles during driving is also attracting attention in order to ensure driving safety. Metering steering wheel rotation angle has important roles in researching operation behaviors, driving states and the like of drivers under various situations.
In the prior art, the steering wheel rotation angle detection mechanism comprises a steering wheel rotating shaft, a driving gear fixedly sleeved on the steering wheel rotating shaft, a driven gear meshed with the driving gear, and an angle sensor arranged on the driven gear. The working process is as follows: when the driver rotates the steering wheel, the steering wheel rotating shaft rotates, the rotation can be transmitted to the driving gear, the driving gear rotates to drive the driven gear to rotate, the angle sensor can detect the rotation angle of the driven gear, and then the steering wheel rotation angle is calculated.
At present, the driving gear and the driven gear are rigid cylindrical gears, meshing gaps exist between tooth parts, abnormal noise and noise can be generated in the meshing gaps in the running process of an automobile steering system, and driving comfort of an automobile is reduced intangibly.
Disclosure of Invention
In view of the above, the utility model provides a steering wheel rotation angle detection mechanism to solve the problems of noise and abnormal sound generated by meshing of a driving gear and a driven gear in the running process of an automobile steering system.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the utility model provides a steering wheel turned angle detection mechanism, includes the casing base, the steering wheel pivot is installed to the casing base internal rotation, and the fixed cover in steering wheel pivot lower part has drive unit, the cover has the driving gear on the drive unit admittedly, the driving gear outside is provided with the driven gear rather than the meshing, and driven gear rotates and installs in the casing base, and is equipped with angle sensor, its characterized in that between driven gear and the casing base: the driving gear and the driven gear are plastic parts, the driven gear is provided with driven tooth parts distributed along the circumferential direction of the driven gear, each driven tooth part is provided with a deformation notch, the deformation notch extends inwards from the outer end of the driven tooth part, a driven tooth groove is formed between the adjacent driven tooth parts, and a weakening notch is arranged at the bottom of the driven tooth groove.
By adopting the structure, the driving gear and the driven gear are both made of plastic materials, the driven gear is provided with the deformation notch and the weakening notch, when the driving gear is meshed with the driven gear, the tooth part of the driving gear is meshed with the tooth groove of the driven gear, the tooth part of the driving gear can press the tooth part of the driven gear, the tooth part of the driven gear deforms towards the direction of the deformation notch, the tooth surface of the driving gear is always clung to the inner wall of the tooth groove of the driven gear until the driving gear is meshed with the next pair of teeth of the driven gear, so that the meshing of the two gears is smoother, noise in the meshing process is reduced, and the driving comfort is improved.
As preferable: the deformation notch penetrates through the thickness direction of the driven gear, the deformation notch extends from the tooth top to the tooth root of the outer end of the driven gear, and the deformation notch is of a strip-shaped groove structure. By adopting the structure, the driven tooth part is provided with the strip-shaped groove structure, so that the deformation degree of the driven tooth part which can be generated after being stressed is larger.
As preferable: the weakening notch is a circular notch and penetrates through the thickness direction of the driven gear. By adopting the structure, the weakening notch is a circular notch at the tooth groove of the driven gear, so that the wall thickness from the tooth root of the driven gear to the tooth groove is reduced, the deformation degree of the driven gear is larger, and the driving gear and the driven gear are smoothly meshed.
As preferable: the driven gears are obliquely arranged on the driving gears. By adopting the structure, the driven gear is obliquely arranged relative to the driving gear, and when the driven gear is meshed with the driving gear, the meshing between the two gears is carried out from point to face, so that the meshing between the two gears is smoother, and the noise is smaller.
As preferable: the steering wheel rotating shaft is provided with a spline part, and the transmission part is provided with a spline housing meshed with the spline part. By adopting the structure, the spline part is matched with the spline sleeve, so that the torque received by the steering wheel rotating shaft can be transmitted to the transmission part and then to the driving gear.
As preferable: the steering wheel is characterized in that a protruding part is arranged on the steering wheel rotating shaft, the protruding part protrudes outwards along the circumferential direction of the steering wheel rotating shaft, and a blocking surface matched with the protruding part is arranged at the lower part of the transmission part. By adopting the structure, the protruding part is matched with the blocking surface, so that the transmission part is conveniently mounted at the appointed position on the steering wheel rotating shaft.
Compared with the prior art, the utility model has the beneficial effects that:
1. in this steering wheel rotation angle detection mechanism, driven gear material is plastics, be equipped with the deformation breach on the driven gear, with the help of the elastic deformation ability of plastic gear self, can be greater than driven gear's tooth's socket width slightly with the tooth thickness design of driving gear, when driving gear and driven gear meshing, the tooth portion of driving gear can oppress driven gear's tooth portion, make driven gear's tooth portion take place deformation to the direction of deformation breach, tooth portion compressive deformation can provide reverse thrust, make the tooth portion of driving gear, driven gear keep hugging closely, thereby guarantee steering system operation in-process, driving gear and driven gear's tooth portion can keep lasting, and the mesh state of zero clearance, fundamentally solved the problem that meshing produced noise and abnormal sound has promoted driving comfort.
2. The weakening notch arranged at the bottom of the driven tooth slot is beneficial to reducing the thickness of the root position of the tooth part, so that the elastic deformation of the tooth part is easier to occur.
Drawings
FIG. 1 is a schematic diagram of a steering wheel rotation angle detection mechanism;
FIG. 2 is an exploded view of the steering wheel angle of rotation detection mechanism;
FIG. 3 is an enlarged view of FIG. 3 at I;
fig. 4 is a schematic structural view of the transmission member 2, the driven gear 3, and the driving gear 21 in the present utility model;
fig. 5 is a side view of the transmission member 2, the driven gear 3, and the driving gear 21 in the present utility model;
fig. 6 is a cross-sectional view of the steering wheel spindle 1 and the transmission member 2 in the present utility model.
Detailed Description
The utility model is further described below with reference to examples and figures.
As shown in fig. 1 and 2, a steering wheel rotation angle detection mechanism comprises a steering wheel rotating shaft 1, a transmission part 2, a driven gear 3 and a shell base 4, wherein the shell base 4 is of a cylindrical structure with lugs and is arranged below a vehicle instrument desk, the steering wheel rotating shaft 1 is a stepped shaft, the upper end of the steering wheel rotating shaft is used for being connected with a steering wheel, and the lower part of the steering wheel rotating shaft is rotationally sleeved in the shell base 4 through two groups of bearings b. The transmission part 2 is fixedly sleeved at the lower part of the steering wheel rotating shaft 1 and is arranged in the shell base 4, the transmission part 2 is a ring-shaped part, and the driving gear 21 is fixedly sleeved on the ring-shaped part. The driven gear 3 quantity is two sets of, and two sets of driven gear 3 rotate the outside that sets up at driving gear 21, two sets of driven gear 3 all meshes with driving gear 21, and driving gear 21 and driven gear 3 all set up inside casing base 4, and two sets of driven gear 3 top all is provided with angle sensor for detect driven gear 3 rotation angle.
Based on the above design, when the user rotates the steering wheel, the steering wheel rotating shaft 1 can be driven to rotate, then the transmission part 2 can be driven to rotate, the transmission part 2 can drive the driving gear 21 to rotate together, the rotation of the driving gear 21 can drive two groups of driven gears 3 to rotate, the angle sensor above the driven gears 3 can detect the rotation angle of the driven gears 3, and then the rotation angle of the steering wheel can be calculated.
As shown in fig. 4 and 5, the driving gear 21 and the driven gear 3 are made of plastic materials, so that the tooth parts of the driven gear 3 can be elastically deformed. The driven gear 3 of two sets of all include the driven tooth portion 33 of circumference distribution and the driven tooth groove 34 that forms between the adjacent two sets of driven tooth portion 33, each driven tooth portion 33 all is equipped with the deformation breach 31 that runs through along its thickness direction, and deformation breach 31 is the bar groove, and extends to root department by the top of driven tooth portion 33, and deformation breach 31's structural design has guaranteed that driven tooth portion 33 can increase its degree of deformation after receiving circumference moment of torsion. The bottom of each driven tooth slot 34 is provided with a circular weakening notch 32, the weakening notch 32 penetrates through the thickness direction of the driven gear 3, the weakening notch 32 reduces the wall thickness from the root of the driven tooth portion 33 to the bottom of the driven tooth slot 34, and the deformation degree of the driven tooth portion 33 is enabled to be larger. The driving gear 21 is provided with driving teeth 211 circumferentially distributed, the driving teeth 211 are meshed with the driven tooth grooves 34, and the number of the driving teeth 211 is twice as large as that of the driven teeth 33, namely, the transmission ratio of the driving gear 21 to the driven gear 21 is 1:2. The central axes of the driven gear 3 and the driving gear 21 are arranged in a relatively inclined manner, so that when the driven gear 3 is meshed with the driving gear 21, the meshing between the driving tooth part 211 and the driven tooth groove 34 is carried out from point to face, and the meshing between the driven gear 3 and the driving gear 21 is smoother and has lower noise.
Based on the above design, when the driving gear 21 drives two sets of driven gears 3 to rotate, the driving tooth portion 211 will mesh with the driven tooth slot 34, and the meshing process is performed from point to face, the driving tooth portion 211 will be pressed on the inner wall of one side of the driven tooth slot 34, so that the driven tooth portion 33 receives circumferential torque, since the driven gears 3 are made of plastic materials, and the driven tooth portion 33 is provided with the deformation notch 31, the driven tooth portion 33 will deform towards the direction of the deformation notch 31, so that the tooth surface of the driving tooth portion 211 can be always clung to the inner wall of the driven tooth slot 34 until the meshed driving tooth portion 211 is completely separated from the driven tooth slot 34. By the design, the driving gear 21 and the driven gear 3 are meshed smoothly, noise generated in the process of meshing is reduced, and driving comfort is improved.
As shown in fig. 3 and 6, the steering wheel shaft 1 includes a spline portion 11 and a protruding portion 12, the spline portion 11 is provided at the lower portion of the steering wheel shaft 1, the protruding portion 12 is provided below the spline portion 11, the protruding portion 12 protrudes outward along the circumferential direction of the steering wheel shaft 1, and the spline portion 11 and the protruding portion 12 are formed integrally with the steering wheel shaft 1. Referring to fig. 4, the transmission part 2 is provided with a spline housing 22 matched with the spline portion 11, and when the steering wheel rotating shaft 1 rotates, the spline portion 11 is matched with the spline housing 22, so that the rotation torque can be accurately transmitted to the transmission part 2 from the steering wheel rotating shaft 1, and the driving gear 21 and the steering wheel rotating shaft 1 synchronously rotate. The lower part of the transmission part 2 is provided with a blocking surface 23 matched with the protruding part 12, and the protruding part 12 is matched with the blocking surface 23, so that the transmission part 2 can be conveniently installed at a designated position on the steering wheel rotating shaft 1.
Finally, it should be noted that the above description is only a preferred embodiment of the present utility model, and that many similar changes can be made by those skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (6)
1. The utility model provides a steering wheel turned angle detection mechanism, includes casing base (4), steering wheel pivot (1) is installed to casing base (4) internal rotation, and steering wheel pivot (1) lower part solid cover has drive part (2), solid cover has driving gear (21) on drive part (2), driving gear (21) outside is provided with driven gear (3) rather than the meshing, and driven gear (3) rotate and install in casing base (4), and are equipped with angle sensor between driven gear (3) and casing base (4), its characterized in that: the driving gear (21) and the driven gear (3) are plastic parts, the driven gear (3) is provided with driven tooth parts (33) distributed along the circumferential direction of the driven gear, each driven tooth part (33) is provided with a deformation notch (31), the deformation notch (31) extends inwards from the outer end of the driven tooth part (33), a driven tooth groove (34) is formed between every two adjacent driven tooth parts (33), and a weakening notch (32) is formed in the bottom of each driven tooth groove (34).
2. The steering wheel rotation angle detection mechanism according to claim 1, wherein: the deformation notch (31) penetrates through the thickness direction of the driven gear (3), the deformation notch (31) extends from the tooth top to the tooth root of the outer end of the driven gear part (33), and the deformation notch (31) is of a strip-shaped groove structure.
3. The steering wheel rotation angle detection mechanism according to claim 1, wherein: the weakening gap (32) is a circular gap, and the weakening gap (32) penetrates through the thickness direction of the driven gear (3).
4. The steering wheel rotation angle detection mechanism according to claim 1, wherein: the driven gears (3) are obliquely arranged relative to the driving gears (21).
5. The steering wheel rotation angle detection mechanism according to claim 1, wherein: the steering wheel rotating shaft (1) is provided with a spline part (11), and the transmission part (2) is provided with a spline housing (22) meshed with the spline part (11).
6. The steering wheel rotation angle detection mechanism according to claim 1, wherein: the steering wheel rotating shaft (1) is provided with a protruding portion (12), the protruding portion (12) protrudes outwards along the circumferential direction of the steering wheel rotating shaft (1), and the lower portion of the transmission part (2) is provided with a blocking surface (23) matched with the protruding portion (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322343609.6U CN220785901U (en) | 2023-08-30 | 2023-08-30 | Steering wheel rotation angle detection mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322343609.6U CN220785901U (en) | 2023-08-30 | 2023-08-30 | Steering wheel rotation angle detection mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220785901U true CN220785901U (en) | 2024-04-16 |
Family
ID=90666005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322343609.6U Active CN220785901U (en) | 2023-08-30 | 2023-08-30 | Steering wheel rotation angle detection mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220785901U (en) |
-
2023
- 2023-08-30 CN CN202322343609.6U patent/CN220785901U/en active Active
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