CN219857339U

CN219857339U - Vehicle, steer-by-wire system, steering wheel hand feeling simulation unit and limiting assembly thereof

Info

Publication number: CN219857339U
Application number: CN202321721681.1U
Authority: CN
Inventors: 褚玉林; 张淼; 查敏超
Original assignee: Jiangsu Zhiyu Automobile Technology Co ltd
Current assignee: Jiangsu Zhiyu Automobile Technology Co ltd
Priority date: 2023-07-03
Filing date: 2023-07-03
Publication date: 2023-10-20
Anticipated expiration: 2033-07-03

Abstract

The utility model discloses a vehicle, a steer-by-wire system, a steering wheel hand feeling simulation unit and a limiting assembly thereof. The limiting component of the steering wheel hand feeling simulation unit comprises a fixing piece, a first gear, a second gear, a first blocking piece and a second blocking piece, wherein the first gear is rotatably arranged on the fixing piece; the second gear is meshed with the first gear and is used for being connected with the steering wheel to rotate under the drive of the steering wheel, and the second gear can drive the first gear to rotate along a first direction and a second direction so as to switch between a first state and a second state, and the first direction is opposite to the second direction; the first blocking piece and the second blocking piece are respectively arranged on the first gear and the second gear and can synchronously rotate along with the first gear and the second gear respectively. The utility model has the advantages of small number of parts, low cost, small size, compact structure, light weight and small occupied space.

Description

Vehicle, steer-by-wire system, steering wheel hand feeling simulation unit and limiting assembly thereof

Technical Field

The utility model relates to the technical field of automobile parts, in particular to a vehicle, a steer-by-wire system, a steering wheel hand feeling simulation unit and a limiting assembly thereof.

Background

The modern science and technology has rapid development, the requirements of people on automobile driving are higher and higher, and the steering system is in the stages of mechanical steering, traditional hydraulic power steering and the like at one time, and the steering system is bound to be automatic, intelligent and modularized. Therefore, the steer-by-wire System (SBW) has the advantages of small occupied space, improved safety and high-level intelligent driving support, and can be widely applied to new energy vehicle types in the future, and has a huge development prospect.

The steer-by-wire eliminates the mechanical connection of the steering gear to the steering wheel output shaft, and therefore it requires a feel simulation unit to achieve the function of simulating feel and controlling the number of turns of the steering wheel. The number of turns of the steering wheel of the conventional steering is determined by the total stroke of the steering gear by mechanical connection, and the number of turns of the conventional steering is 2-3.

The limiting mechanism of the steering wheel hand feeling simulation unit has the function of controlling the rotation number of turns of the steering wheel, and the existing limiting mechanism of the steering wheel hand feeling simulation unit has the disadvantages of more parts, higher cost, larger overall dimension, insufficient compactness, larger weight and more occupied space during assembly.

Disclosure of Invention

In view of the above, the present utility model aims to provide a limiting component of a steering wheel feel simulation unit, which has the advantages of less number of parts, low cost, small size, compact structure, light weight and small occupied space.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

a spacing assembly of a steering wheel feel simulation unit comprising:

a fixing member;

the first gear is rotatably arranged on the fixing piece;

the second gear is meshed with the first gear and is used for being connected with a steering wheel to rotate under the driving of the steering wheel, the second gear rotates to drive the first gear to rotate along a first direction and a second direction so as to switch between a first state and a second state, and the first direction is opposite to the second direction;

the first blocking piece and the second blocking piece are respectively arranged on the first gear and the second gear and can synchronously rotate along with the first gear and the second gear respectively;

in the first state, the second stopper is stopped against one side of the first stopper to restrict rotation of the second gear in the first direction, and in the second state, the second stopper is stopped against the other side of the first stopper to restrict rotation of the second gear in the second direction.

According to some embodiments of the utility model, the diameter of the second gear is smaller than the diameter of the first gear, and the number of teeth of the second gear is smaller than the number of teeth of the first gear.

According to some embodiments of the utility model, the first gear is a rim, one of the second gear and the fixing member is at least partially disposed in an area surrounded by the rim, and the other is engaged with an outer peripheral surface of the rim.

According to some embodiments of the utility model, the second gear is located in an area surrounded by the rim, the first blocking piece is arranged on an axial end face of the first gear, and the second blocking piece is arranged on a rotating movement path of the first blocking piece.

According to some embodiments of the utility model, the second gear has a connection hole for connection with the steering wheel, the central axis of the connection hole coinciding with the rotational axis of the steering wheel; and/or the number of the groups of groups,

the second gear is provided with a spline for connection with the rotational shaft of the steering wheel.

According to some embodiments of the utility model, the fixing member is a steering column, and the first gear is rotatably provided on the steering column; or the fixing piece is a shell arranged on the steering column, the first gear is rotatably arranged on the shell, and the steering column is sleeved on the rotating shaft of the steering wheel.

According to some embodiments of the utility model, the fixing member includes a housing and a cover, the housing defines a receiving space, the cover covers an end opening of the receiving space, the first gear and the second gear are both disposed in the receiving space, and an opening is disposed on the housing and/or the cover, and the opening is used for penetrating through a rotating shaft of the steering wheel to connect the rotating shaft with the second gear.

According to the limiting component of the steering wheel hand feeling simulation unit, the first gear and the second gear are rotatable and meshed with each other, the second gear is connected with the steering wheel, the steering wheel rotates to drive the second gear to rotate, and accordingly the second gear can drive the first gear to rotate. In addition, the limiting assembly can realize the limiting simulation of the steering wheel by only arranging three parts, and has the advantages of small number of parts, low cost, small size, compact structure, light weight and small occupied space.

The second aspect of the utility model also provides a steering wheel hand feeling simulation unit.

The steering wheel hand feeling simulation unit according to the embodiment of the second aspect of the utility model comprises a limiting component of the steering wheel hand feeling simulation unit according to the embodiment of the first aspect of the utility model. Since the steering wheel feel simulation unit according to the second aspect of the present utility model includes the limit component of the steering wheel feel simulation unit according to the first aspect of the present utility model, at least the effect of the limit component of the steering wheel feel simulation unit according to the first aspect of the present utility model is provided, and will not be described in detail herein.

The third aspect of the present utility model also provides a steer-by-wire system.

The steer-by-wire system according to the embodiment of the third aspect of the present utility model includes the steering wheel feel simulation unit according to the embodiment of the second aspect of the present utility model, and thus has at least the effects of the steering wheel feel simulation unit according to the embodiment of the second aspect of the present utility model, and will not be described in detail herein.

The fourth aspect of the utility model also proposes a vehicle.

The vehicle according to the embodiment of the present utility model includes the steer-by-wire system according to the embodiment of the third aspect of the present utility model, and therefore has at least the effects of the steer-by-wire system according to the embodiment of the third aspect of the present utility model, and will not be described in detail herein.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is a schematic structural view of a limit component of a steering wheel feel simulation unit according to an embodiment of the present utility model.

Fig. 2 is a front view of a restraint assembly of a steering wheel feel simulation unit according to an embodiment of the present utility model.

Fig. 3 is a schematic structural view of a limiting assembly of a steering wheel feel simulation unit according to another embodiment of the present utility model.

Fig. 4 is a front view of a spacing assembly of a steering wheel feel simulation unit according to another embodiment of the present utility model.

Fig. 5 is a schematic view illustrating a rotation process of a limit assembly of a steering wheel feel simulation unit according to an embodiment of the present utility model.

Fig. 6 is an exploded view of a spacing assembly of a steering wheel feel simulation unit according to an embodiment of the present utility model.

Fig. 7 is a schematic structural view of a housing in a limit assembly of a steering wheel feel simulation unit according to an embodiment of the present utility model.

Reference numerals illustrate:

a limit assembly 100 of the steering wheel feel simulation unit;

a fixing member 10; a housing 101; a housing 102; a cover 103; a first gear 20;

rim 201; a second gear 30; a spline 301; a first stopper 40; a second stopper 50; and a bearing 60.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

The present utility model will be described in detail below with reference to fig. 1 to 7 in conjunction with the embodiments.

As shown in fig. 1 to 7, the limit assembly 100 of the steering wheel feel simulation unit according to the embodiment of the present utility model includes a fixing member 10, a first gear 20, a second gear 30, a first stopper 40, and a second stopper 50. To explain, the steering wheel feel simulation unit belongs to a part of a steer-by-wire system, the steer-by-wire system cancels the mechanical transmission structure of the original mechanical steering system, and the steering of the vehicle is controlled by adopting an electric signal control mode. The steering wheel hand feeling simulation unit is used for simulating the steering hand feeling of the original mechanical steering system, and comprises a maximum rotation position limit for simulating clockwise rotation and anticlockwise rotation of the steering wheel and a damping hand feeling for simulating the rotation of the steering wheel. The limiting assembly 100 of the steering wheel feel simulation unit according to the embodiment of the present utility model is used for simulating the maximum rotation position limiting effect of clockwise rotation and counterclockwise rotation of the steering wheel.

As shown in fig. 1 and 2, the first gear 20 is rotatably disposed on the fixing member 10, and the fixing member 10 is used to provide a mounting position for the first gear 20 and/or the second gear 30, and the fixing member 10 is further used to connect with other supporting components on the vehicle so as to fix the limiting assembly 100 according to the embodiment of the present utility model on the vehicle. For example, mounting ears are provided on the mount 10 to facilitate connection of the mount 10 to structures on the vehicle.

The second gear 30 is meshed with the first gear 20, the second gear 30 is used for being connected with a steering wheel to rotate under the driving of the steering wheel, the second gear 30 rotates to drive the first gear 20 to rotate along a first direction and a second direction so as to switch between the first state and the second state, the first direction and the second direction are opposite, for example, the first direction is clockwise, the second direction is anticlockwise, and the spatial positions of the first gear 20 and the second gear 30 are not changed in the rotating process; the first blocking member 40 and the second blocking member 50 are respectively disposed on the first gear 20 and the second gear 30 and can synchronously rotate along with the first gear 20 and the second gear 30 respectively.

In the first state, the second blocking member 50 is stopped against one side of the first blocking member 40 to limit the rotation of the second gear 30 in the first direction, and in the second state, the second blocking member 50 is stopped against the other side of the first blocking member 40 to limit the rotation of the second gear 30 in the second direction, so that the limiting assembly 100 of the present utility model can realize the function of limiting the maximum rotation position of the steering wheel when the steering wheel is rotated clockwise and counterclockwise in a simulated manner after being connected with the steering wheel.

The steering wheel in the original mechanical steering system is in an initial state in a return state, and the steering wheel can continue to rotate by 540 degrees anticlockwise or rotate by 540 degrees clockwise in the return state. According to the actual design, in the steering-by-wire system, in the state of the steering wheel being in the righting state, the maximum clockwise rotation angle of the steering wheel can be 360 degrees, and the maximum anticlockwise rotation angle of the steering wheel is 360 degrees; alternatively, the maximum rotation angle of the steering wheel clockwise may be 540 ° and the maximum rotation angle of the steering wheel counterclockwise may be 540 °; alternatively, the maximum rotation angle of the steering wheel clockwise may be 180 °, the maximum rotation angle of the steering wheel counterclockwise may be 180 °, and so on, which are within the scope of the present utility model.

For example, as shown in fig. 1 to 6, in the limit assembly 100 of the steering wheel feel simulation unit, the number of teeth of the first gear 20 of the limit assembly 100 is 27, the number of teeth of the second gear 30 is 15, that is, the ratio of the numbers of teeth of the first gear 20 and the second gear 30 is 9:5, when the maximum rotation angle of the steering wheel clockwise is 360 °, the maximum rotation angle of the steering wheel counterclockwise is 360 °, the maximum rotatable angle of the second gear 30 is 720 °, and the maximum rotatable angle of the first gear 20 is 400 °. Wherein, with the c diagram in fig. 5 as an initial state diagram, the b diagram in fig. 5 illustrates that when the second gear 30 in the c diagram in fig. 5 is rotated 180 ° counterclockwise, the first gear 20 is rotated 100 ° counterclockwise; fig. 5 a illustrates that when the second gear 30 in fig. 5 c rotates counterclockwise by 360 °, the first gear 20 in fig. 5 c rotates counterclockwise by 200 °, and the first gear 20 and the second gear 30 are in the first state, and the second gear 30 can only rotate clockwise, and the first blocking member 40 and the second blocking member 50 interfere with each other when rotating counterclockwise, so as to limit the steering wheel from rotating further in the counterclockwise direction; fig. 5 d illustrates that when the second gear 30 in fig. 5 c is rotated clockwise by 180 °, the first gear 20 is rotated clockwise by 100 °; fig. 5 e illustrates that when the second gear 30 in fig. 5 c rotates clockwise by 360 °, the first gear 20 in fig. 5 c rotates by 200 °, at this time, the first gear 20 and the second gear 30 reach the second state, the first gear 40 and the second gear 50 interfere with each other when the second gear 30 continues to rotate clockwise, and the second gear 30 cannot continue to rotate clockwise, thereby achieving the effect of restricting the steering wheel from rotating further in the clockwise direction.

The limiting assembly 100 of the embodiment of the utility model can realize limiting simulation by only arranging three parts, so that the limiting assembly has the advantages of small number of parts, low cost, small size, compact structure, light weight and small occupied space.

According to the limit component 100 of the steering wheel hand feeling simulation unit of the embodiment of the utility model, the first gear 20 and the second gear 30 are arranged, the first gear 20 and the second gear 30 are rotatable and meshed with each other, the second gear 30 is connected with the steering wheel, the steering wheel rotates to drive the second gear 30 to rotate, the second gear 30 can drive the first gear 20 to rotate, when the first blocking piece 40 on the first gear 20 and the second blocking piece 50 on the second gear 30 do not interfere in the rotating process, the first gear 20 and the second gear 30 can normally continue to rotate, when the first blocking piece 40 on the first gear 20 and the second blocking piece 50 on the second gear 30 interfere in the rotating process, the first blocking piece 40 and the second blocking piece 50 can abut against each other, so that the first gear 20 and the second gear 30 can not rotate continuously in the original direction any more, and the limit effect of rotating the steering wheel clockwise and the maximum rotating position of the steering wheel anticlockwise can be simulated. In addition, the limiting assembly can realize the limiting simulation of the steering wheel by only arranging three parts, and has the advantages of small number of parts, low cost, small size, compact structure, light weight and small occupied space.

According to some embodiments of the present utility model, as shown in fig. 1 to 6, the diameter of the second gear 30 is smaller than that of the first gear 20, and the number of teeth of the second gear 30 is smaller than that of the first gear 20. The diameter ratio and the tooth number ratio of the first gear 20 and the second gear 30 can be adjusted as required to meet the rotation limit simulation requirements of different maximum rotation turns of the steering wheel.

According to some embodiments of the present utility model, first gear 20 is rim 201, and one of second gear 30 and fixing member 10 is at least partially disposed within the area enclosed by rim 201, and the other is engaged with the outer peripheral surface of rim 201. That is, as shown in fig. 1 to 6, the second gear 30 is disposed in the area surrounded by the rim 201, the outer peripheral surface of the second gear 30 is engaged with the inner peripheral surface of the rim 201, and the outer peripheral surface of the rim 201 is engaged with the fixing member 10, at this time, the limit structure is more compact, the volume is smaller, and the structure is more reasonable. Alternatively, the fixing member 10 is located in an area surrounded by the rim 201 and rotatably connected to the rim 201, and the outer peripheral surface of the second gear 30 is engaged with the outer peripheral surface of the rim 201, whereby the rotation limit simulation of the steering wheel can be realized.

According to some embodiments of the present utility model, as shown in fig. 1 to 4, second gear 30 is located in the area surrounded by rim 201, first stopper 40 is provided on the axial end face of first gear 20, and second stopper 50 is provided on the rotational movement path of first stopper 40, so that second stopper 50 can interfere with the movement of first stopper 40 during the rotation of first stopper 40. For example, the second blocking member 50 may be provided on the outer circumferential surface of the second gear 30, thus facilitating the forming of the first blocking member 40 and the second blocking member 50, making the forming more difficult, and facilitating the maintenance. For example, the second stopper 50 may be provided on the axial end surface of the second gear 30, and in this case, the first stopper 40 may be provided on the inner peripheral surface of the first gear 20.

According to some embodiments of the present utility model, the fixing member 10 is a steering column, and the first gear 20 is rotatably disposed on the steering column, so that the number of parts can be further reduced, the cost can be reduced, and the space occupation can be reduced.

In some embodiments, as shown in fig. 1 and 2, the fixing member 10 is a housing 101 mounted on a steering column, the first gear 20 is rotatably disposed on the housing 101, and the steering column is sleeved on a rotation shaft of a steering wheel. By arranging the shell 101, on one hand, the limit structure can be installed on the steering column as a whole once, and when the limit structure is installed on the steering column, the operation is more convenient; on the other hand, the casing 101 can also play a certain protection role, so that the possibility that the first gear 20 and the second gear 30 are mutually meshed and interfered by the outside is reduced.

In some embodiments, the fixing member 10 and the first gear 20 are rotatably connected through a bearing 60, so that the rotating friction force is small and the abrasion is small.

According to some embodiments of the present utility model, the fixing member 10 includes a housing 102 and a cover 103, the housing 102 defines a receiving space, the cover 103 covers an end opening of the receiving space, the first gear 20 and the second gear 30 are both disposed in the receiving space, and an opening is disposed on the housing 102 and/or the cover 103, and the opening is used for penetrating a rotating shaft of the steering wheel to connect the rotating shaft with the second gear 30. The first gear 20 and the second gear 30 are packaged in a certain space by arranging the shell 102 and the cover 103, so that the risk that the transmission process of the first gear 20 and the second gear 30 is interfered by the outside can be reduced, the influence of dust, water and the like on the transmission process of the first gear 20 and the second gear 30 can be reduced, and the service life of the limiting assembly 100 is prolonged.

According to some embodiments of the utility model, the second gear 30 has a connection hole for connection with the steering wheel, the central axis of the connection hole coinciding with the rotational axis of the steering wheel; that is, the steering wheel and the second gear 30 are directly connected in a driving manner, so that the structure is simpler, the number of parts is smaller, the driving loss is smaller, and the size is more compact.

According to some embodiments of the utility model, the second gear 30 is provided with a spline 301 for connection with the rotational axis of the steering wheel. The second gear 30 is connected with the rotating shaft of the steering wheel through the spline 301, the connection between the second gear 30 and the steering wheel is more convenient, and the transmission stability between the first gear 20 and the steering wheel is better.

The steering wheel feel simulation unit according to the embodiment of the second aspect of the present utility model includes the limit assembly 100 of the steering wheel feel simulation unit according to the embodiment of the first aspect of the present utility model. Since the steering wheel feel simulation unit according to the second aspect of the present utility model includes the limit assembly 100 of the steering wheel feel simulation unit according to the first aspect of the present utility model, the steering wheel feel simulation unit according to the second aspect of the present utility model includes at least the following advantages: through setting up first gear 20 and second gear 30, first gear 20 and second gear 30 all rotatable and intermeshing, second gear 30 is connected with the steering wheel, the steering wheel rotates and can drive second gear 30 rotation, thereby second gear 30 can drive first gear 20 rotation, when first fender 40 on first gear 20 and second fender 50 on second gear 30 do not take place the interference in the rotation process, first gear 20 and second gear 30 can normally continue to rotate, when first fender 40 on first gear 20 and second fender 50 on second gear 30 take place the interference in the rotation process, first fender 40 and second fender 50 can mutual butt for first gear 20 and second gear 30 can not continue to rotate in the direction of reproduction, reach the purpose of rotation spacing, therefore, the utility model can simulate clockwise rotation steering wheel and anticlockwise rotation steering wheel's maximum rotation position spacing effect. In addition, the limiting assembly can realize the limiting simulation of the steering wheel by only arranging three parts, and has the advantages of small number of parts, low cost, small size, compact structure, light weight and small occupied space.

The fourth aspect of the utility model also proposes a vehicle.

Where "vehicle" or "vehicular" or other similar terms in the present utility model generally include motor vehicles, such as passenger automobiles including Sport Utility Vehicles (SUVs), buses, vans, various commercial vehicles, watercraft including various boats, ships, aircraft, and the like, and include hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles, and other alternative fuel vehicles (e.g., fuels derived from non-fossil energy sources). A hybrid vehicle is a vehicle having two or more power sources, such as a vehicle that is both gasoline powered and electric powered.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. A spacing subassembly of steering wheel feel analog element, its characterized in that includes:

a fixing member (10);

a first gear (20), wherein the first gear (20) is rotatably arranged on the fixing piece (10);

a second gear (30), the second gear (30) is meshed with the first gear (20), the second gear (30) is used for being connected with a steering wheel to rotate under the driving of the steering wheel, the second gear (30) rotates to drive the first gear (20) to rotate along a first direction and a second direction so as to switch between a first state and a second state, and the first direction and the second direction are opposite;

the first baffle (40) and the second baffle (50), wherein the first baffle (40) and the second baffle (50) are respectively arranged on the first gear (20) and the second gear (30) and can synchronously rotate along with the first gear (20) and the second gear (30);

in the first state, the second stopper (50) is stopped against one side of the first stopper (40) to restrict rotation of the second gear (30) in the first direction, and in the second state, the second stopper (50) is stopped against the other side of the first stopper (40) to restrict rotation of the second gear (30) in the second direction.

2. The steering wheel feel simulation unit limit assembly according to claim 1, wherein the diameter of the second gear (30) is smaller than the diameter of the first gear (20), and the number of teeth of the second gear (30) is smaller than the number of teeth of the first gear (20).

3. The steering wheel feel simulation unit limiting assembly according to claim 1, wherein the first gear (20) is a rim (201), one of the second gear (30) and the fixing member (10) is at least partially disposed in an area surrounded by the rim (201), and the other is engaged with an outer peripheral surface of the rim (201).

4. A steering wheel feel simulation unit limit assembly according to claim 3, wherein the second gear (30) is located in an area surrounded by the rim (201), the first baffle (40) is arranged on an axial end face of the first gear (20), and the second baffle (50) is arranged on a rotary motion path of the first baffle (40).

5. The limit assembly of a steering wheel feel simulation unit according to claim 1, characterized in that the second gear (30) has a connecting hole for connecting with the steering wheel, the central axis of the connecting hole coinciding with the rotation axis of the steering wheel; and/or the number of the groups of groups,

the second gear (30) is provided with a spline (301) for connection with the rotational shaft of the steering wheel.

6. The limit assembly of a steering wheel feel simulation unit according to claim 1, wherein the fixing member (10) is a steering column, and the first gear (20) is rotatably arranged on the steering column; or the fixing piece (10) is a shell (101) arranged on a steering column, the first gear (20) is rotatably arranged on the shell (101), and the steering column is sleeved on the rotating shaft of the steering wheel.

7. The steering wheel feel simulation unit limiting assembly according to claim 1, wherein the fixing piece (10) comprises a shell (102) and a cover body (103), the shell (102) defines an accommodating space, the cover body (103) covers an end opening of the accommodating space, the first gear (20) and the second gear (30) are both arranged in the accommodating space, and an opening is formed in the shell (102) and/or the cover body (103) and is used for penetrating a rotating shaft of the steering wheel to enable the rotating shaft to be connected with the second gear (30).

8. Steering wheel feel simulation unit, characterized in that it comprises a limit assembly of the steering wheel feel simulation unit according to any of claims 1-7.

9. A steer-by-wire system comprising the steering wheel feel simulation unit according to claim 8.

10. A vehicle comprising the steer-by-wire system according to claim 9.