Limiting structure of steering column and vehicle
By using a combination of gears and limiting parts in the limit structure of the steering column, the problem of excessive rotation of the steering column in the wire-controlled steering technology is solved, and the components are damaged due to high reliability and longer service life are achieved.
Patent Information
- Application Number
- CN202420601474.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-03-26
AI Technical Summary
In online steering technology, the free rotation of the steering column may cause the clock spring to exceed the number of turns limit and be damaged.
A limiting structure is adopted, including a first gear and a second gear, and mechanical limiting is achieved through the cooperation between the first limiting member and the second limiting member to prevent excessive rotation of the steering column.
Through the mechanical limit structure, damage to the clock spring and angle sensor is avoided, and the reliability of the steering system is improved.
Smart Images
Figure CN222554987U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobiles, in particular to a limiting structure of a steering column and a vehicle. Background Art
[0002] In related technologies, the steering system of a vehicle usually adopts steer-by-wire technology, where the steering column and the steer-by-wire device exchange information through electrical signal transmission, and physical buttons are usually set on the steering wheel. The physical buttons require a clock spring between the steering column and the steering wheel to solve power supply and communication. However, in the steer-by-wire technology, the steering column rotates freely, which may cause the clock spring to exceed the limit of the number of turns and be damaged. Utility Model Content
[0003] In view of this, the utility model aims to provide a limiting structure of a steering column to avoid damage to components.
[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:
[0005] A limiting structure comprises: a first gear, the first gear is used to connect the steering column, the first gear rotates coaxially with the steering column, and the first gear is provided with a first limiting member; a second gear, the second gear is meshed with the first gear, the second gear is provided with a second limiting member, and the second limiting member and the first limiting member are located on the same side of the second gear; wherein the first limiting member extends to the second gear, the first limiting member has a locking position, the first limiting member is located at the locking position, and the first limiting member stops at the second limiting member.
[0006] According to the limiting structure of the embodiment of the utility model, mechanical limiting is achieved through the cooperation between the first limiting member and the second limiting member. Through the cooperation between the two gears, there is no need for the cooperation of more parts. The overall structure is simple, and the cooperation of the mechanical structure improves the reliability and avoids damage to parts such as the clock spring and the angle sensor.
[0007] In addition, the limiting structure according to the above embodiment of the utility model may also have the following additional technical features:
[0008] According to some embodiments of the utility model, there are two second limit members, and the two second limit members are respectively a first limit sub-member and a second limit sub-member, and the first limit sub-member and the second limit sub-member are arranged at an interval; wherein, the locking position includes a first locking position and a second locking position, and when the first limit member rotates toward the first direction to the second locking position, the first limit member stops at the first limit sub-member, and when the first limit member rotates toward the second direction to the first locking position, the first limit member stops at the second limit sub-member, and the first direction is opposite to the second direction.
[0009] According to some embodiments of the present invention, the first limiting sub-component and the second limiting sub-component are spaced apart along the circumferential direction of the second gear, and the first limiting sub-component and the second limiting sub-component are at the same distance from the rotation axis of the second gear.
[0010] According to some embodiments of the utility model, a side of the second limit member facing the first gear is configured as a diverging side, a side of the second limit member abutting against the first limit member is configured as a stopping side, and an angle between the stopping side and the diverging side is an acute angle.
[0011] According to some embodiments of the utility model, the first limiting member includes: a connecting portion, one end of which is connected to the first gear; an extending portion, which is connected to the other end of the connecting portion and extends in the direction of the second gear, and the end of the extending portion away from the connecting portion is wider than the end close to the connecting portion.
[0012] According to some embodiments of the present invention, the radius of the first gear is smaller than the radius of the second gear.
[0013] According to some embodiments of the present invention, the radius of the first gear is r1, 18mm≤r1≤20mm, and the radius of the second gear is r2, 24mm≤r2≤26mm.
[0014] According to some embodiments of the present invention, the first position-limiting member is integrally formed with the first gear, and the second position-limiting member is integrally formed with the second gear.
[0015] According to some embodiments of the present utility model, the limiting structure further includes a shell, a protection space is provided in the shell, and the first gear and the second gear are both provided in the protection space.
[0016] Another object of the present invention is to provide a vehicle.
[0017] In order to achieve the above object, the technical solution of the utility model is implemented as follows:
[0018] A vehicle comprises the above-mentioned limiting structure. The advantages of the vehicle and the limiting structure over the prior art are the same, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:
[0020] Figure 1It is a schematic diagram of the relative positions of the limiting structure, the steering wheel and the steering column in the embodiment of the utility model;
[0021] Figure 2 yes Figure 1 The local enlarged view of point I in the middle;
[0022] Figure 3 It is a schematic diagram of the first position-limiting member in the embodiment of the utility model being located at the first locking position;
[0023] Figure 4 It is a schematic diagram of the first position-limiting member in the embodiment of the utility model being located at the second locking position;
[0024] Figure 5 It is a schematic diagram of the position of the shell in the embodiment of the utility model.
[0025] Reference numerals:
[0026] 100. Limiting structure;
[0027] 10. first gear; 11. first position-limiting member; 111. connecting portion; 112. extending portion;
[0028] 20. second gear; 21. second position-limiting member; 211. first position-limiting member; 212. second position-limiting member;
[0029] 213, departure surface; 214, stop surface;
[0030] 30. Housing; 200. Steering wheel; 300. Steering column. DETAILED DESCRIPTION
[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0032] The following will refer to Figure 1-Figure 5 The utility model is described in detail in conjunction with the embodiments.
[0033] Reference Figure 1 , Figure 2 As shown, the limiting structure 100 of the steering column according to the embodiment of the utility model comprises: a first gear 10 and a second gear 20 .
[0034] The first gear 10 is used to connect the steering column 300, the first gear 10 rotates coaxially with the steering column 300, and the first gear 10 is provided with a first stopper 11. The second gear 20 is meshed with the first gear 10, and the second gear 20 is provided with a second stopper 21, and the second stopper 21 and the first stopper 11 are located on the same side of the second gear 20.
[0035] The first position-limiting member 11 extends to the second gear 20 , and the first position-limiting member 11 has a locking position. When the first position-limiting member 11 is located at the locking position, the first position-limiting member 11 abuts against the second position-limiting member 21 .
[0036] In the above scheme, the first gear 10 is connected to the steering column 300, the first gear 10 and the steering column 300 rotate coaxially, the first gear 10 and the steering column 300 affect each other, the rotation of the steering column 300 drives the first gear 10 to rotate, when the first gear 10 is restricted and stops rotating, the rotating column also stops rotating. The second gear 20 is meshed with the first gear 10, the rotation of the first gear 10 drives the rotation of the second gear 20, the first gear 10 and the second gear 20 rotate in opposite directions, that is, when the first gear 10 rotates clockwise, the second gear 20 rotates counterclockwise, and when the first gear 10 rotates counterclockwise, the second gear 20 rotates clockwise.
[0037] In related technologies, the steering system of a vehicle usually adopts steer-by-wire technology, where the steering column and the steer-by-wire device exchange information through electrical signal transmission, and physical buttons are usually set on the steering wheel. The physical buttons require a clock spring between the steering column and the steering wheel to solve power supply and communication. However, in the steer-by-wire technology, the steering column rotates freely, which may cause the clock spring to exceed the limit of the number of turns and be damaged.
[0038] The embodiment of the utility model cooperates with the first limit member 11 and the second limit member 21. The first limit member 11 is arranged on the first gear 10, and the first limit member 11 extends to the second gear 20. The second limit member 21 is arranged on the second gear 20. The linear speed of the first limit member 11 must be greater than the linear speed of the second limit member 21. It can be simply understood as: the first limit member 11 pushes the second limit member 21, and the position of the second gear 20 is relatively fixed. The second limit member 21 is restricted by the second gear 20, so that the first gear 10 cannot continue to rotate, thereby realizing mechanical limiting. Through the cooperation between the two gears, there is no need for the cooperation of more parts, the overall structure is simple, and the cooperation of the mechanical structure improves reliability.
[0039] It can be understood that the linear velocity of the meshing parts of the first gear 10 and the second gear 20 is the same, which is v1, and the first limit member 11 extends to the second gear 20. According to the relationship between linear velocity and angular velocity, formula v=rω, the linear velocity of the end of the first limit member 11 is v2, v2 is greater than v1, and the linear velocity of the second limit member 21 is v3, v3 is less than v1, then v2 is greater than v1.
[0040] For example, the radius of the first gear 10 is 19.375 mm, the angular velocity of the first gear 10 is 10 rad / s, the angular velocity of the first limit member 11 is the same as the angular velocity of the first gear 10, both are 10 rad / s, the radius of the end of the first limit member 11 is 25 mm, and the linear velocity is 256.25 mm / s, the radius of the second gear 20 is 25.625 mm, the angular velocity of the second gear 20 is 7.75 rad / s, the angular velocity of the second limit member 21 is the same as the angular velocity of the second gear 20, both are 7.75 rad / s, the radius of the end of the second limit member 21 is 22.5 mm, and the linear velocity is 174.375 mm / s. It can be seen that the linear velocity of the end of the second limit member 21 is less than the linear velocity of the end of the first limit member 11, the second limit member 21 hinders the continued rotation of the first limit member 11, and the first gear 10 is restricted from rotating.
[0041] Specifically, refer to Figure 3 As shown, the first gear 10 can rotate clockwise, and the second gear 20 meshing with the first gear 10 rotates counterclockwise. When the first limit member 11 rotates to the locking position, the second limit member 21 is located below the first limit member 11, and the second limit member 21 stops at the first limit member 11. The first gear 10 is restricted from rotating, and the steering column 300 cannot continue to rotate.
[0042] Or, refer to Figure 4 As shown, the first gear 10 can also rotate counterclockwise, and the second gear 20 meshing with the first gear 10 rotates clockwise. When the first limit member 11 rotates to the locking position, the second limit member 21 is located above the first limit member 11, and the second limit member 21 stops at the first limit member 11. The first gear 10 is restricted from rotating, and the steering column 300 cannot continue to rotate.
[0043] Alternatively, there may be two second limiting members 21 , and the two second limiting members 21 respectively limit the clockwise rotation and the counterclockwise rotation of the first gear 10 , so that the rotation of the steering column 300 in both directions can be limited.
[0044] Meanwhile, it should be noted that the steering column 300 is usually connected with a clock spring and an angle sensor, and the clock spring has a limited number of turns. After the number of turns is exceeded, the clock spring will be damaged, causing the buttons on the steering wheel 200 to fail. The angle sensor also has a limited angle range. The utility model protects the angle sensor and the clock spring by limiting the rotation range of the steering column 300.
[0045] According to the limiting structure 100 of the steering column of the embodiment of the utility model, through the cooperation between the first limiting member 11 and the second limiting member 21, the first limiting member 11 is arranged on the first gear 10, the first limiting member 11 extends to the second gear 20, the second limiting member 21 is arranged on the second gear 20, the first limiting member 11 rotates to the locking position, and the second limiting member 21 is limited by the second gear 20, so that the first gear 10 cannot continue to rotate, thereby realizing mechanical limiting. Through the cooperation between the two gears, there is no need for the cooperation of more parts, the overall structure is simple, and the cooperation of the mechanical structure improves the reliability and avoids damage to parts such as clock springs and angle sensors.
[0046] Reference Figures 1 to 4 As shown, in some embodiments, there are two second limiting members 21 , and the two second limiting members 21 are respectively a first limiting sub-member 211 and a second limiting sub-member 212 , and the first limiting sub-member 211 and the second limiting sub-member 212 are arranged at intervals.
[0047] Among them, the locking position includes a first locking position and a second locking position. When the first limit member 11 rotates toward the first direction to the first locking position, the first limit member 11 stops at the first limit sub-member 211. When the first limit member 11 rotates toward the second direction to the second locking position, the first limit member 11 stops at the second limit sub-member 212. The first direction is opposite to the second direction.
[0048] In the above scheme, the first limiting sub-component 211 and the second limiting sub-component 212 are respectively arranged at different positions on the second gear 20. When the first limiting component 11 rotates toward the first direction to the first locking position, the first limiting component 11 stops at the first limiting sub-component 211. When the first limiting component 11 rotates toward the second direction to the second locking position, the first limiting component 11 stops at the second limiting sub-component 212. For example, the first direction is the clockwise direction, and the second direction is the counterclockwise direction. The first limiting sub-component 211 and the second limiting sub-component 212 both limit the rotation of the first limiting component 11 in two directions, so that the steering column 300 can be limited in both the clockwise and counterclockwise directions, further reducing the probability of damage to components.
[0049] Reference Figures 1 to 4 As shown, in some embodiments, the first limiting sub-component 211 and the second limiting sub-component 212 are spaced apart along the circumferential direction of the second gear 20 , and the first limiting sub-component 211 and the second limiting sub-component 212 are at the same distance from the rotation axis of the second gear 20 .
[0050] In the above scheme, the first limiting sub-component 211 and the second limiting sub-component 212 are spaced apart along the circumferential direction of the second gear 20, and the first limiting sub-component 211 and the second limiting sub-component 212 are at the same distance from the rotation axis of the second gear 20, so that the first limiting sub-component 11 is more easily in contact with the first limiting sub-component 211 and the second limiting sub-component 212, thereby reducing the difficulty of the overall scheme design and improving the reliability of the structural action.
[0051] More specifically, the first limiting sub-component 211 and the second limiting sub-component 212 are located on the same side of the rotation axis of the second gear 20. For example, the first limiting sub-component 211 and the second limiting sub-component 212 are both located on the left side of the rotation axis of the second gear 20, thereby improving the reliability of the overall matching.
[0052] Reference Figures 2 to 4 As shown, in some embodiments, the side of the second limit member 21 facing the first gear 10 is configured as a facing away surface 213, and the side of the second limit member 21 that stops at the first limit member 11 is configured as a stopping surface 214, and the angle between the stopping surface 214 and the facing away surface 213 is an acute angle.
[0053] In some embodiments, the second limit member 21 has at least two surfaces, namely, a facing surface 213 and a stop surface 214. The side of the second limit member 21 facing the first gear 10 is the facing surface 213, and the side of the second limit member 21 that stops at the first limit member 11 is the stop surface 214. The angle between the stop surface 214 and the facing surface 213 is set to an acute angle. The setting of the acute angle makes the contact between the second limit member 21 and the first limit member 11 more stable, increases the probability of the first limit member 11 contacting the second limit member 21, and improves reliability.
[0054] Reference Figure 1 , Figure 2 As shown, in some embodiments, the first limiting member 11 includes: a connecting portion 111 and an extending portion 112 .
[0055] One end of the connecting portion 111 is connected to the first gear 10 . The extending portion 112 is connected to the other end of the connecting portion 111 and extends toward the second gear 20 . The end of the extending portion 112 away from the connecting portion 111 is wider than the end close to the connecting portion 111 .
[0056] In the above scheme, the first limit member 11 is fixed to the first gear 10 through the connecting portion 111, and the extending portion 112 is connected to the other end of the connecting portion 111 and extends in the direction of the second gear 20. When the first limit member 11 is in the locked position, the extending portion 112 abuts against the second limit member 21, and the end of the extending portion 112 away from the connecting portion 111 is wider than the end close to the connecting portion 111. That is, the end of the extending portion 112 away from the connecting portion 111 is larger, and the larger end of the extending portion 112 increases the probability of the extending portion 112 contacting the second limit member 21, thereby making the overall structural reliability higher.
[0057] Reference Figures 1 to 4 As shown, in some embodiments, the radius of the first gear 10 is smaller than the radius of the second gear 20 .
[0058] In the above scheme, the radius of the first gear 10 is smaller than the radius of the second gear 20, that is, the surface area on the second gear 20 is larger, and the larger area of space is convenient for the setting of the second limit member 21. For example, there are multiple second limit members 21, and multiple second limit members 21 can be set on a second limit member 21 with a larger area.
[0059] For example, the radius of the first gear 10 is 19.375 mm, and the radius of the second gear 20 is 25.625 mm. The radius of the first gear 10 is smaller than the radius of the second gear 20 .
[0060] In some embodiments, the radius of the first gear 10 is r1, 18 mm ≤ r1 ≤ 20 mm, and the radius of the second gear 20 is r2, 24 mm ≤ r2 ≤ 26 mm.
[0061] In the above scheme, the radius r1 of the first gear 10 is set in the range of 18mm to 20mm, and the radius r2 of the second gear 20 is set in the range of 24mm to 26mm. The radius of the second gear 20 is larger than the radius of the first gear 10. The meshing of the first gear 10 and the second gear 20 is simultaneously matched with the first limit member 11 and the second limit member 21. The overall structure is more compact, which facilitates the contact and cooperation between the first limit member 11 and the second limit member 21.
[0062] For example, the radius of the first gear 10 is 19.375 mm, and the radius of the second gear 20 is 25.625 mm; or, the radius of the first gear 10 is 18 mm, and the radius of the second gear 20 is 24 mm; or, the radius of the first gear 10 is 20 mm, and the radius of the second gear 20 is 26 mm.
[0063] In some embodiments, the first limiting member 11 is integrally formed with the first gear 10 , and the second limiting member 21 is integrally formed with the second gear 20 .
[0064] In the above scheme, the first limit member 11 is integrally formed with the first gear 10, and the second limit member 21 is integrally formed with the second gear 20. That is to say, the first limit member 11 is manufactured and formed at the same time when the first gear 10 is manufactured and formed, and the second limit member 21 is manufactured and formed at the same time when the second gear 20 is manufactured and formed, thereby reducing the number of components and making the overall structure more compact.
[0065] Reference Figure 5 As shown, in some embodiments, the limiting structure 100 of the steering column further includes a housing 30 , a protection space is provided in the housing 30 , and the first gear 10 and the second gear 20 are both provided in the protection space.
[0066] In the above scheme, the first gear 10 and the second gear 20 are both installed in the shell 30, and the shell 30 is used to isolate the first gear 10 and the second gear 20 from the external space, thereby reducing the probability of the first gear 10 and the second gear 20 being interfered with by the outside, so that the first gear 10 and the second gear 20 can work stably and improve reliability.
[0067] Specifically, the first limiting member 11 and the second limiting member 21 are also installed in the protection space, and the housing 30 is used to isolate the components, thereby improving reliability.
[0068] The vehicle according to the embodiment of the utility model includes: a steering wheel 200 , a steering column 300 and a limiting structure 100 .
[0069] The steering column 300 is connected to the steering wheel 200 . The limiting structure 100 is the above-mentioned limiting structure 100 , and the limiting structure 100 is connected to the steering column 300 .
[0070] The limiting structure 100 is connected to the steering column 300, and the steering column 300 is connected to the steering wheel 200. The rotation of the steering wheel 200 will drive the steering column 300 to rotate, thereby driving the first gear 10 to rotate. The first gear 10 is meshed with the second gear 20, and the first limiting member 11 cooperates with the second limiting member 21 to limit the rotation of the first gear 10 and the steering column 300, so that the rotation of the steering wheel 200 is within a certain range.
[0071] According to the vehicle of the embodiment of the utility model, through the cooperation between the first limit member 11 and the second limit member 21, the first limit member 11 is arranged on the first gear 10, the first limit member 11 extends to the second gear 20, the second limit member 21 is arranged on the second gear 20, the first limit member 11 rotates to the locking position, and the second limit member 21 is limited by the second gear 20, so that the first gear 10 cannot continue to rotate, thereby realizing mechanical limitation. Through the cooperation between the two gears, there is no need for the cooperation of more parts, the overall structure is simple, and the cooperation of the mechanical structure improves reliability and avoids damage to parts such as clock springs and angle sensors.
[0072] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A limiting structure of a steering column, characterized in that: include: A first gear (10), the first gear (10) being used to connect the steering column (300), the first gear (10) and the steering column (300) rotating coaxially, the first gear (10) being provided with a first stopper (11); a second gear (20), the second gear (20) being meshed with the first gear (10), the second gear (20) being provided with a second limiting member (21), the second limiting member (21) and the first limiting member (11) being located on the same side of the second gear (20); wherein: The first limiting member (11) extends to the second gear (20), the first limiting member (11) has a locking position, the first limiting member (11) is located at the locking position, and the first limiting member (11) stops against the second limiting member (21).
2. The limiting structure of the steering column according to claim 1, characterized in that: There are two second limiting members (21), the two second limiting members (21) are respectively a first limiting sub-member (211) and a second limiting sub-member (212), and the first limiting sub-member (211) and the second limiting sub-member (212) are arranged at intervals; wherein, The locking position comprises a first locking position and a second locking position; when the first limiting member (11) rotates toward the first direction to the first locking position, the first limiting member (11) stops against the first limiting sub-member (211); when the first limiting member (11) rotates toward the second direction to the second locking position, the first limiting member (11) stops against the second limiting sub-member (212); the first direction is opposite to the second direction.
3. The limiting structure of the steering column according to claim 2, characterized in that: The first limiting sub-component (211) and the second limiting sub-component (212) are arranged at intervals along the circumferential direction of the second gear (20), and the first limiting sub-component (211) and the second limiting sub-component (212) are at the same distance from the rotation axis of the second gear (20).
4. The limiting structure of the steering column according to claim 1, characterized in that: The side of the second position-limiting member (21) facing the first gear (10) is configured as a departure surface (213), and the side of the second position-limiting member (21) abutting against the first position-limiting member (11) is configured as a stop surface (214), and the included angle between the stop surface (214) and the departure surface (213) is an acute angle.
5. The limiting structure of the steering column according to claim 4, characterized in that: The first limiting member (11) comprises: A connecting portion (111), one end of the connecting portion (111) being connected to the first gear (10); An extension portion (112), the extension portion (112) being connected to the other end of the connection portion (111) and extending in the direction of the second gear (20), and an end of the extension portion (112) away from the connection portion (111) being wider than an end close to the connection portion (111).
6. The limiting structure of the steering column according to claim 1, characterized in that: The radius of the first gear (10) is smaller than the radius of the second gear (20).
7. The limiting structure of the steering column according to claim 6, characterized in that: The radius of the first gear (10) is r1, 18 mm ≤ r1 ≤ 20 mm, and the radius of the second gear (20) is r2, 24 mm ≤ r2 ≤ 26 mm.
8. The limiting structure of the steering column according to any one of claims 1 to 7, characterized in that: The first limiting member (11) is integrally formed on the first gear (10), and the second limiting member (21) is integrally formed on the second gear (20).
9. The limiting structure of the steering column according to any one of claims 1 to 7, characterized in that: It also comprises a housing (30), wherein a protection space is provided in the housing (30), and the first gear (10) and the second gear (20) are both provided in the protection space.
10. A vehicle, characterized in that: include: Steering wheel (200); A steering column (300), wherein the steering column (300) is connected to the steering wheel (200); A limiting structure (100), wherein the limiting structure (100) is the limiting structure (100) according to any one of claims 1 to 9, and the limiting structure (100) is connected to the steering column (300).