Limiting mechanism, steering gear, steering system and vehicle

Abstract

The utility model provides a limiting mechanism, a steering gear, a steering system and a vehicle. The limiting mechanism comprises a limiting gear ring, a steering shaft and a limiting gear. The steering shaft is rotationally arranged in the limiting gear ring in a penetrating manner; the limiting gear is installed between the limiting gear ring and the steering shaft and is in meshing transmission with the limiting gear ring and the steering shaft. Wherein the limiting gear ring is provided with a limiting guide groove extending in the circumferential direction of the steering shaft, the steering shaft is suitable for driving the limiting gear to slide along the limiting guide groove when rotating, and the limiting gear is suitable for being limited to abut against the end of the limiting guide groove. According to the limiting mechanism, the rotating angle of the steering shaft is limited through rotation of the limiting gear and sliding along the limiting guide groove, namely large-angle limiting of rotation of the steering shaft can be achieved through the small limiting gear, and compared with the prior art, the number of parts of the limiting mechanism is reduced, and the structure is simple.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a limiting mechanism, a steering gear, a steering system, and a vehicle. Background Technology

[0002] Typically, to protect the safety of the vehicle and the driver, vehicles are equipped with certain limiting structures when turning to prevent excessive steering angles from causing harm to the driver and passengers.

[0003] However, existing limiting mechanisms for steering wheel angles, especially for large angles, involve numerous parts and complex structures. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a limiting mechanism that limits the rotation angle of the steering shaft by rotating a limiting gear and sliding along a limiting guide groove. In other words, a large angle of rotation of the steering shaft can be limited by a smaller limiting gear. Compared with the prior art, this limiting mechanism has fewer parts and a simpler structure.

[0005] The limiting mechanism according to an embodiment of the present invention includes: a limiting gear ring, a steering shaft, and a limiting gear; the steering shaft rotatably passes through the limiting gear ring; the limiting gear is installed between the limiting gear ring and the steering shaft, and meshes with the limiting gear ring and the steering shaft respectively for transmission; wherein, the limiting gear ring is provided with a limiting guide groove extending circumferentially along the steering shaft, the steering shaft is adapted to drive the limiting gear to slide along the limiting guide groove when rotating, and the limiting gear is adapted to limit and abut against the end of the limiting guide groove.

[0006] According to the limiting mechanism of this utility model embodiment, when the steering shaft rotates, it drives the limiting gear to rotate relative to the limiting gear ring. During the rotation, the limiting gear slides along the limiting guide groove. When the limiting gear and the end of the limiting guide groove come into contact, the steering shaft cannot continue to rotate. That is, the rotation angle of the steering shaft is limited by the limiting gear and the limiting guide groove. Thus, a large rotation angle of the steering shaft can be limited by a smaller limiting gear. Compared with the prior art, the number of parts is reduced and the structure is simple.

[0007] According to the limiting mechanism of this utility model embodiment, the inner circumference of the limiting gear ring is circumferentially meshed with a plurality of limiting gears, the limiting guide groove is a plurality of grooves and corresponds one-to-one with the plurality of limiting gears, and the steering shaft is meshed with the plurality of limiting gears in the middle region formed by the plurality of limiting gears.

[0008] According to the limiting mechanism of this utility model embodiment, each of the limiting guide grooves is provided with a buffer part at its end, and the limiting gear is provided with a moving shaft. The moving shaft slides along the limiting guide groove and is adapted to abut against the buffer part.

[0009] According to the limiting mechanism of this utility model embodiment, the buffer part is bonded to the end of the limiting guide groove.

[0010] According to the limiting mechanism of this utility model embodiment, the steering shaft includes a rotating connecting section, a gear section and a main body section connected in sequence. The limiting gear ring is provided with a connecting hole. The rotating connecting section is rotatably connected to the connecting hole. The outer periphery of the gear section meshes with a plurality of limiting gears. The main body section is adapted to be power connected to the steering wheel of a vehicle.

[0011] According to the limiting mechanism of this utility model embodiment, the diameter of the rotating connecting section is smaller than the diameter of the gear section, so as to form a pressing step between the rotating connecting section and the gear section.

[0012] According to the limiting mechanism of this utility model embodiment, the radius of the limiting gear ring is the sum of the diameter of the limiting gear and the radius of the gear segment.

[0013] According to the limiting mechanism of this utility model embodiment, the rotating connecting section is sleeved with a bearing and is rotatably connected to the connecting hole through the bearing.

[0014] This utility model embodiment also proposes a steering gear, including a driving component, a steering gear, a steering rack, a tie rod, and the aforementioned limiting mechanism. The steering shaft is rotatably connected to the limiting gear ring and outputs a rotation signal to the driving component. The driving component drives the steering gear to rotate. The steering rack is disposed on the tie rod and meshes with the steering gear. The rotation of the steering gear drives the steering rack to move, causing the tie rod to move and thus driving the vehicle wheels to rotate.

[0015] According to the present invention, the steering gear limits the rotation angle of the steering shaft, thereby limiting the rotation angle of the vehicle wheels, preventing the wheel steering angle from being too large and reducing harm to the driver and passengers.

[0016] This utility model embodiment also proposes a steering system, including a steering wheel, a steering column and the aforementioned steering gear, wherein the steering shaft is connected to the steering wheel through the steering column, and when the steering wheel rotates, it drives the steering shaft to rotate.

[0017] According to the steering system of this utility model embodiment, the angle of rotation of the steering wheel operated by the driver can be limited by the limiting mechanism, thereby improving the driver's controllability of the vehicle and thus improving the driver's safety.

[0018] This utility model embodiment also proposes a vehicle including the above-described steering system.

[0019] The steering system and the vehicle described herein have the same advantages over existing technologies, and will not be elaborated upon here.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the limiting mechanism according to an embodiment of the present utility model;

[0023] Figure 2 This is a front view of the limiting mechanism according to an embodiment of the present utility model;

[0024] Figure 3 This is an embodiment of the present utility model. Figure 2 A cross-sectional view along the AA direction;

[0025] Figure 4 This is a front view of the limiting toothed ring according to an embodiment of the present utility model;

[0026] Figure 5 This is an embodiment of the present utility model. Figure 4 A cross-sectional view along the BB direction;

[0027] Figure 6 This is a front view of the limiting gear according to an embodiment of the present utility model;

[0028] Figure 7 This is a side view of the limiting gear according to an embodiment of the present utility model.

[0029] Figure label:

[0030] Limiting mechanism 100,

[0031] Limiting gear ring 1, internal gear 11, limiting guide groove 12, connecting hole 13, installation space 14, limiting gear 2, motion shaft 21, external gear 22, steering shaft 3, gear section 31, rotating connection section 32, main body section 33, pressing step 34, buffer part 4. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] The following is for reference. Figures 1-7 The limiting mechanism 100 according to the present invention limits the rotation angle of the steering shaft 3 by rotating the limiting gear 2 and sliding along the limiting guide groove 12. That is, a large angle limitation of the steering shaft 3 can be achieved by using a smaller limiting gear 2. Compared with the prior art, the limiting mechanism 100 has fewer parts and a simpler structure.

[0036] like Figure 1-7 As shown, a limiting mechanism 100 according to an embodiment of the present invention includes: a limiting gear ring 1, a steering shaft 3, and a limiting gear 2.

[0037] The steering shaft 3 is rotatably inserted through the limiting gear ring 1; the limiting gear 2 is installed between the limiting gear ring 1 and the steering shaft 3, and meshes with the limiting gear ring 1 and the steering shaft 3 respectively for transmission; the limiting gear ring 1 is provided with a limiting guide groove 12 extending circumferentially along the steering shaft 3, the steering shaft 3 is adapted to drive the limiting gear 2 to slide along the limiting guide groove 12 when rotating, and the limiting gear 2 is adapted to limit and stop at the end of the limiting guide groove 12.

[0038] In practice, the limiting gear ring 1 has an installation space 14 inside. The inner circumferential wall of the limiting gear ring 1 has internal teeth 11, and the limiting gear 2 has external teeth 22. The limiting gear 2 is located in the installation space 14. The external teeth 22 of the limiting gear 2 mesh with the internal teeth 11 of the inner circumferential wall of the limiting gear ring 1. At the same time, the limiting gear ring 1 also has a limiting guide groove 12, which extends circumferentially along the steering shaft 3. That is to say, the steering shaft 3 can at least partially mesh with the limiting gear 2. During the rotation of the steering shaft 3, it will drive the limiting gear 2 to rotate. The limiting gear 2 meshes with the limiting gear ring 1, and when the limiting gear 2 rotates along the inner circumference of the limiting gear ring 1, it can also slide along the limiting guide groove 12. This means that the limiting guide groove 12 limits the direction of movement of the limiting gear 2. When the limiting gear 2 cannot move, the steering shaft 3 cannot continue to rotate. Therefore, through the design of the limiting gear ring 1 and the limiting gear 2, the rotation angle of the steering shaft 3 is limited.

[0039] Specifically, the movement distance of the limiting gear 2 can be designed by designing the length of the limiting guide groove 12, and the movement distance of the limiting gear 2 determines the rotation angle of the steering shaft 3. In this way, the limiting gear 2 can be set in the installation space 14 of the limiting gear ring 1, and part of the steering shaft 3 can also extend into the limiting gear ring 1, thereby saving space along the axial direction of the limiting mechanism 100 along the steering shaft 3; in addition, the limiting mechanism 100 has a simple structure and few parts. It only needs to open the limiting guide groove 12 on the limiting gear ring 1, the limiting gear ring 1 and the limiting gear 2 cooperate, the limiting gear 2 slides along the limiting guide groove 12, and the limiting gear 2 cooperates with and limits the steering shaft 3, thereby limiting the rotation angle of the steering shaft 3.

[0040] In some embodiments, the inner circumference of the limiting gear ring 1 is circumferentially meshed with multiple limiting gears 2, the limiting guide groove 12 is multiple and corresponds one-to-one with the multiple limiting gears 2, and the steering shaft 3 is meshed with the multiple limiting gears 2 in the middle region formed by the multiple limiting gears 2.

[0041] Reference Figure 2As shown, three limiting gears 2 can be spaced apart on the inner circumference of the limiting gear ring 1, and each limiting gear 2 meshes with the inner teeth 11 of the limiting gear ring 1. At the same time, three limiting guide grooves 12 are distributed circumferentially along the inner circumference of the limiting gear ring 1. The steering shaft 3 is rotatably connected to the limiting gear ring 1 at the middle of the three limiting gears 2 and meshes with all three limiting gears 2. When the steering shaft 3 rotates clockwise, each limiting gear 2 can rotate clockwise and slide clockwise along the limiting guide groove 12. When each limiting gear 2 rotates clockwise to one end of the limiting guide groove 12, the steering shaft 3 cannot continue to rotate clockwise. Conversely, when the steering shaft 3 rotates counterclockwise, each limiting gear 2 can rotate in the opposite direction and slide counterclockwise along the limiting guide groove 12. When each limiting gear 2 rotates counterclockwise to the other end of the limiting guide groove 12, the steering shaft 3 cannot continue to rotate counterclockwise. At this time, the rotation angle of the steering shaft 3 is limited.

[0042] By setting multiple limiting gears 2 and having the steering shaft 3 extend into the middle of the multiple limiting gears 2 and mesh with them, the stability of the steering shaft 3's rotation can be improved, and the steering shaft 3 can be meshed with multiple limiting gears 2 around its perimeter, making the force on the steering shaft 3 more balanced.

[0043] In some embodiments, each limiting guide groove 12 is provided with a buffer part 4 at its end, and the limiting gear 2 is provided with a motion shaft 21, which slides along the limiting guide groove 12 and is adapted to press against the buffer part 4.

[0044] In practice, the limiting guide groove 12 is an arc-shaped groove, and the end of the limiting guide groove 12 is provided with rubber material. Then, the limiting gear 2 meshes with the steering shaft 3 and rotates when the steering shaft 3 rotates. The motion shaft 21 of the limiting gear 2 slides along the limiting guide groove 12, and when the motion shaft 21 slides to the end of the limiting guide groove 12, the motion shaft 21 contacts the end of the limiting guide groove 12, thereby having a buffering effect. However, the existing limiting mechanism 100 uses mechanical limiting, which produces a metallic impact sound at the mechanical end. The sound is loud and will damage the limiting mechanism 100 over time. In this embodiment of the utility model, a rubber buffer part 4 is provided at the limiting guide groove 12, and the main body is a star gear structure. The operating sound is smaller, and it will not impact the end of the limiting guide groove 12. The impact sound is smaller and the movement is more stable.

[0045] In some embodiments, the buffer part 4 is bonded to the end of the limiting guide groove 12. The buffer part 4 may be constructed as a semi-circular rubber buffer block. The semi-circular rubber buffer block is bonded to the end of the limiting guide groove 12, which can save rubber material and is easy to bond. In addition, if the buffer part 4 is damaged or falls off, a new buffer part 4 can be replaced and bonded to the end of the limiting guide groove 12.

[0046] In addition, a buffer part 4 is provided at the end of the limiting guide groove 12. That is, other parts of the limiting guide groove 12 can be made of materials that facilitate the sliding of the motion shaft 21, such as metal. In this way, the motion shaft 21 can be buffered at the end of the limiting guide groove 12, and the motion shaft 21 of the limiting gear 2 can be moved smoothly.

[0047] In some embodiments, the steering shaft 3 includes a rotating connecting section 32, a gear section 31, and a main body section 33 connected in sequence. The limiting gear ring 1 is provided with a connecting hole 13. The rotating connecting section 32 is rotatably connected to the connecting hole 13. The outer periphery of the gear section 31 meshes with a plurality of limiting gears 2. The main body section 33 is adapted to be powered connected to the steering wheel of the vehicle.

[0048] like Figure 3 As shown, the rotating connecting section 32 of the steering shaft 3 extends into the connecting hole 13 of the limiting gear ring 1 and is rotatably connected to the limiting gear ring 1. That is, a gear section 31 is partially provided on the outer periphery of the steering shaft 3. The gear section 31 meshes with multiple limiting gears 2, so that when the steering shaft 3 rotates, it drives multiple limiting gears 2 to rotate simultaneously. The rotating connecting section 32 is used to rotatably connect with the limiting gear ring 1. The main body section 33 can transmit power to the vehicle's steering wheel. When the steering wheel rotates, it drives the main body section 33 to rotate, thereby driving the steering shaft 3 to rotate, so that the gear section 31 drives the limiting gears 2 to rotate.

[0049] Therefore, by dividing the steering shaft 3 into different segments, it can both drive the limit gear 2 to rotate and realize the rotational connection between the steering shaft 3 and the limit gear ring 1, while also realizing the power transmission between the steering wheel and the steering shaft 3.

[0050] In some embodiments, the diameter of the rotating connecting section 32 is smaller than the diameter of the gear section 31, so as to form a pressing step 34 between the rotating connecting section 32 and the gear section 31.

[0051] Reference Figure 3 As shown, the diameter of the rotating connecting section 32 is smaller than the diameter of the gear section 31. After the rotating connecting section 32 extends into the connecting hole 13, the pressing step 34 formed between the rotating connecting section 32 and the gear section 31 presses against the limiting gear ring 1 in the axial direction at the connecting hole 13. Furthermore, the gear section 31 meshes with the external teeth 22 of the limiting gear 2. In other words, the design of the pressing step 34 can prevent the steering shaft 3 from moving upward in the axial direction and improve the stability of the rotation of the steering shaft 3.

[0052] In some embodiments, the radius of the limiting gear ring 1 is the sum of the diameter of the limiting gear 2 and the radius of the gear segment 31. (Refer to...) Figure 2As shown, the three limiting gears 2 have the same diameter, the steering shaft 3 is located in the center area enclosed by the three limiting gears 2, and the steering shaft 3 is rotatably connected to the center area of ​​the limiting gear ring 1. Given the diameter of the limiting gear 2 and the radius of the steering shaft 3, the radius of the required limiting gear ring 1 can be calculated.

[0053] Specifically, utilizing the transmission ratio relationship, when the gear meshing module m and pressure angle are the same, where the gear meshing module m is the ratio of the gear pitch circle circumference to the number of teeth, determining the gear size, the transmission ratio is inversely proportional to the number of teeth. Taking advantage of this characteristic, when the steering shaft 3 simulates 3 revolutions of the steering wheel, assuming the tooth ratio of gear segment 31 of the steering shaft 3 to the limiting gear 2 is 1:12, then the limiting gear 2 rotates 0.25 revolutions. Therefore, the arc of the limiting guide groove 12 can be determined based on the number of revolutions of the limiting gear 2. Simultaneously, the radius of the external limiting gear ring 1 is the sum of the diameter of the limiting gear 2 and the radius of gear segment 31 of the steering shaft 3. The transmission ratio between the limiting gear ring 1 and the limiting gear 2 can be calculated based on the radius of the limiting gear ring 1 and the radius of the limiting gear 2. Then, the number of teeth in the limiting gear ring 1 can be derived from the number of teeth in the limiting gear 2, and the shape of the limiting gear ring 1 can also be determined.

[0054] When the limiting gear 2 is small, a scheme with a smaller transmission ratio can be used instead, reducing the radius of the limiting gear ring 1 and saving space more effectively. Alternatively, the limiting gear ring 1 can be made of plastic, achieving weight reduction.

[0055] In some embodiments, the rotating connecting section 32 is fitted with a bearing and is rotatably connected to the connecting hole 13 via the bearing.

[0056] In practice, a 4P bearing is fitted around the steering shaft 3, and the rotating shaft 3 is rotatably connected to the connecting hole 13, which can achieve better rotation, guidance, and positioning. The 4P bearing refers to a deep groove ball bearing with four seals. Deep groove ball bearings are the most representative structure among rolling bearings, and the 4P deep groove ball bearing provides better sealing performance by adding seals. It can withstand larger radial and axial loads and is suitable for high-speed rotation and heavy-load conditions. Due to the rolling of the steel balls, the 4P deep groove ball bearing has a low coefficient of friction, providing high-efficiency operation and good rotational balance, reducing vibration and noise.

[0057] This utility model embodiment also proposes a steering gear, including a driving component, a steering gear, a steering rack, a tie rod, and the aforementioned limiting mechanism 100. The steering shaft 3 is rotatably connected to the limiting gear ring 1 and outputs a rotation signal to the driving component. The driving component drives the steering gear to rotate. The steering rack is located on the tie rod and meshes with the steering gear. The rotation of the steering gear drives the steering rack to move, causing the tie rod to move and thus driving the vehicle wheels to rotate.

[0058] In practice, when the rotation angle of the steering shaft 3 is limited, the steering shaft 3 transmits the rotation angle signal to the drive component of the steering gear. The drive component can be a power steering motor. After receiving the rotation signal, the power steering motor starts to rotate by the set angle according to the rotation angle of the steering shaft 3, thereby driving the steering gear to rotate by the set angle. The rotation of the steering gear drives the steering rack to move. The steering rack is located on the tie rod, which in turn drives the tie rod to move. The movement of the tie rod can drive the wheels on both sides of the vehicle to rotate. So, it is equivalent to the power steering motor driving the steering gear and steering rack to work according to the rotation signal received from the steering shaft 3. However, since the rotation angle of the steering shaft 3 is limited, it is equivalent to limiting the rotation angle of the wheels as well.

[0059] This utility model embodiment also proposes a steering system, including a steering wheel, a steering column and the aforementioned steering gear, wherein the steering shaft 3 is connected to the steering wheel through the steering column, and when the steering wheel rotates, it drives the steering shaft 3 to rotate.

[0060] In other words, when the driver operates the steering wheel, the steering wheel rotation will drive the steering column to rotate, and the steering column rotation will drive the steering shaft 3 to rotate. The rotation angle of the steering shaft 3 mainly depends on the rotation angle of the limit gear 2 inside the limit gear ring 1 and the sliding distance of the limit gear 2 along the limit guide groove 12, etc., which ultimately determine the rotation angle of the vehicle's wheels, thereby ensuring the safety and handling of the vehicle.

[0061] This utility model embodiment also proposes a vehicle including the above-mentioned steering system, in which the rotation angle of the steering shaft 3 is limited by the rotation of the limiting gear 2 and its sliding along the limiting guide groove 12. That is, a large angle limitation of the rotation of the steering shaft 3 can be achieved by the smaller limiting gear 2. Compared with the prior art, the limiting mechanism 100 has fewer parts and a simpler structure, thereby limiting the rotation angle of the steering wheel, that is, limiting the rotation angle of the wheel, and improving the safety and handling of the vehicle.

[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0063] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A position limiting mechanism, characterized by, The application relates to a limiting mechanism for a steering system. The limiting mechanism comprises a limiting gear ring (1), a steering shaft (3) rotating through the limiting gear ring (1), and a limiting gear (2) installed between the limiting gear ring (1) and the steering shaft (3) and meshing with the limiting gear ring (1) and the steering shaft (3) respectively. The limiting gear ring (1) is provided with a limiting guide groove (12) extending along the circumference of the steering shaft (3), the steering shaft (3) is adapted to drive the limiting gear (2) to slide along the limiting guide groove (12) when rotating, and the limiting gear (2) is adapted to be limited and abutted against the end of the limiting guide groove (12). The inner circumference of the limiting gear ring (1) is circumferentially spaced and meshed with a plurality of limiting gears (2), the limiting guide grooves (12) are a plurality of and correspond to the plurality of limiting gears (2) one by one, and the steering shaft (3) is meshed with the plurality of limiting gears (2) in the middle region formed by the plurality of limiting gears (2). The end of each limiting guide groove (12) is provided with a buffer part (4), the limiting gear (2) is provided with a movement shaft (21) which slides along the limiting guide groove (12) and is adapted to abut against the buffer part (4).

2. The position limiting mechanism of claim 1, wherein The buffer part (4) is bonded to the end of the limiting guide groove (12).

3. The stop mechanism of claim 2, wherein The steering shaft (3) comprises a rotating connection section (32), a gear section (31) and a main body section (33) connected in sequence, the limiting gear ring (1) is provided with a connecting hole (13), the rotating connection section (32) is rotationally connected to the connecting hole (13), the outer circumference of the gear section (31) is meshed with the plurality of limiting gears (2), and the main body section (33) is adapted to be power-connected with a steering wheel of a vehicle.

4. The limit mechanism of claim 3, wherein The diameter of the rotating connection section (32) is smaller than the diameter of the gear section (31) so as to form an abutting step (34) between the rotating connection section (32) and the gear section (31).

5. The limit mechanism of claim 2, wherein The radius of the limiting gear ring (1) is the sum of the diameter of the limiting gear (2) and the radius of the gear section (31).

6. The limit mechanism of claim 5, wherein, The rotating connection section (32) is sleeved with a bearing and rotationally connected to the connecting hole (13) through the bearing.

7. The stop mechanism of claim 5, wherein The application further relates to a steering system comprising a driving member, a steering gear, a steering rack, a cross rod and the limiting mechanism of any one of claims 1-7, the steering shaft (3) is rotationally connected to the limiting gear ring (1) and outputs a rotating signal to the driving member, the driving member drives the steering gear to rotate, the steering rack is arranged on the cross rod and meshes with the steering gear, the rotation of the steering gear drives the steering rack to move, the cross rod moves to drive the wheels of a vehicle to rotate.

8. The limit mechanism of claim 5, wherein, The application further relates to a steering system comprising a steering wheel, a steering column and the steering device of claim 9, the steering shaft (3) is connected to the steering wheel through the steering column, and the steering wheel drives the steering shaft (3) to rotate when rotating.

9. A diverter characterized by, The application further relates to a steering system comprising the steering system of claim 10.

10. A steering system characterized by, ​ 11. A vehicle characterized by comprising: ​

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