CN219077290U - Steering device and vehicle - Google Patents

Abstract

The application provides a steering device and a vehicle. The steering device comprises a mounting shell, a steering shaft, a rotating disc, a fixed disc and a limiting assembly. The steering shaft penetrates through the installation shell and is rotationally connected with the installation shell, the fixed disc is fixed on the installation shell, and the steering shaft drives the rotating disc to rotate, so that part of moving parts are driven to rotate in the spiral groove, and part of moving parts move along the radial direction of the fixed disc. The radial movement of the moving part along the fixed disc can generate acting force on the elastic part, so that the elastic part deforms, and the elastic force of the elastic part can enable a user rotating the steering wheel to feel resistance, so that unlimited rotation of the steering wheel can be avoided, and the elastic part can also provide resilience force for the return steering wheel.

Description

Steering device and vehicle

Technical Field

The application relates to the technical field of vehicles, in particular to a steering device and a vehicle.

Background

In the existing steer-by-wire system, the mechanical connection of a middle shaft on the traditional steering system is canceled, the design and arrangement of a front suspension and a cabin of a vehicle chassis are more flexible, if an angle limiting mechanism is not added, a steering wheel connected to a steer-by-wire device can rotate without angle limitation, the rotation without angle limitation can damage devices such as a combination switch assembled on the steer-by-wire device, and the rotation of the steering wheel with an over-angle travel can disturb the corner signal of the steer-by-wire system, so that the control of the steer-by-wire device is difficult.

Accordingly, it is desirable to provide a steering device and a vehicle having an angle restricting function to solve the above-described problems.

Disclosure of Invention

The steering device and the vehicle can avoid unlimited rotation of the steering wheel and provide resilience force for the return steering wheel.

An embodiment of a first aspect of the present application provides a steering apparatus, including:

a mounting shell;

the steering shaft penetrates through the mounting shell and is rotationally connected with the mounting shell;

the rotating disc is connected with one end of the steering shaft, and one side of the rotating disc, which is far away from the steering shaft, is provided with a spiral groove;

the fixed disc is arranged on one side of the rotating disc, which is far away from the steering shaft, and is fixedly connected with the mounting shell;

the limiting assembly comprises a moving part and an elastic part, wherein a part of the moving part is accommodated in the spiral groove and is in sliding connection with the rotating disc along the spiral groove, and the elastic part is connected with the moving part and the fixed disc along the radial direction of the fixed disc. According to any one of the embodiments described above, the fixed disk has a limiting groove extending radially along the fixed disk, the other end of the moving member is received in the limiting groove and slidably connected to the fixed disk along the limiting groove, and the elastic member is received in the limiting groove and radially connects the moving member and the fixed disk along the fixed disk.

According to any of the foregoing embodiments of the first aspect of the present application, the number of the elastic members is two, and the moving member is disposed between the two elastic members.

According to any of the foregoing embodiments of the first aspect of the present application, the moving member includes a first slider and a second slider, the first slider is connected to the elastic member, and the second slider is configured to move along the spiral groove.

According to any one of the foregoing embodiments of the first aspect of the present application, the first sliding block includes a main body portion and two connecting columns, the two connecting columns are respectively disposed on two opposite sides of the main body portion, and the two elastic members are respectively sleeved on the connecting columns.

According to any of the foregoing embodiments of the first aspect of the present application, the first sliding block further includes a groove provided in the main body, and a portion of the second sliding block is in interference fit with the groove, and a portion of the second sliding block partially protrudes from the groove.

According to any of the foregoing embodiments of the first aspect of the present application, the fixed disk includes a housing cavity, the housing cavity is in communication with the limiting groove, and the housing cavity is configured to house the rotating disk.

According to any of the foregoing embodiments of the first aspect of the present application, a radial length of the limiting groove along the fixed disc is less than or equal to a radial length of the rotating disc.

According to any of the foregoing embodiments of the first aspect of the present application, a radial length of the limiting groove along the fixed disc is equal to a linear length of both ends of the spiral groove.

According to any one of the foregoing embodiments of the first aspect of the present application, the rotating disc further includes a disc portion and a steering shaft mounting portion connected to each other, the spiral groove is provided in the disc portion, and the steering shaft mounting portion is configured to be connected to the steering shaft.

According to any one of the foregoing embodiments of the first aspect of the present application, the inner surface of the steering shaft mounting portion is provided with an internal spline, and the steering shaft includes an external spline, and the internal spline and the external spline are mutually coupled.

The second aspect of the application further provides a vehicle, including the steering device provided in any one of the embodiments of the first aspect of the application.

The application provides a steering device and a vehicle. The steering device comprises a mounting shell, a steering shaft, a rotating disc, a fixed disc and a limiting assembly. The steering shaft penetrates through the mounting shell and is rotationally connected with the mounting shell; the rotating disc is connected with one end of the steering shaft, and one side of the rotating disc, which is far away from the steering shaft, is provided with a spiral groove; the fixed disc is arranged on one side of the rotating disc, which is far away from the steering shaft, and is fixedly connected with the mounting shell; the limiting assembly comprises a moving part and an elastic part, wherein a part of the moving part is accommodated in the spiral groove and is in sliding connection with the rotating disc along the spiral groove, and the elastic part is connected with the moving part and the fixed disc along the radial direction of the fixed disc. The rotating disc rotates to drive part of the moving piece to rotate in the spiral groove, and meanwhile, part of the moving piece moves along the radial direction of the fixed disc. The radial movement of the moving part along the fixed disc can generate acting force on the elastic part, so that the elastic part deforms, and the elastic force of the elastic part can enable a user rotating the steering wheel to feel resistance, so that unlimited rotation of the steering wheel can be avoided, and the elastic part can also provide resilience force for the return steering wheel. The steering device can provide a rotation resistance moment for the steering wheel and limit the rotation of the steering wheel under the condition that the resistance moment simulated by the hand feeling motor fails.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a split structure of a steering device according to an embodiment of the present application;

fig. 2 is a schematic structural view of a fixing disc according to an embodiment of the present application;

FIG. 3 is a schematic view of an assembled structure of a fixed disk and a limiting assembly according to an embodiment of the present disclosure;

fig. 4 is a sectional view of fig. 3 along a broken line L;

fig. 5 is a schematic structural view of a limiting component according to an embodiment of the present application;

FIG. 6 is a schematic view of a structure of a rotating disc and second slider assembly according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a rotating disc according to an embodiment of the present application.

Reference numerals illustrate:

100. a steering device;

1. a steering shaft; 11. an external spline;

2. a rotating disc; 21. a spiral groove; 22. a disc portion; 23. a steering shaft mounting portion; 24. an internal spline;

3. a fixed plate; 31. a limit groove; 32. a receiving chamber;

4. a limit component; 41. a moving member; 411. a first slider; 4111. a main body portion; 4112. a connecting column; 4113. a groove; 412. a second slider; 42. an elastic member;

5. and (5) mounting the shell.

Detailed Description

Features and exemplary embodiments of various aspects of the present application are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing an example of the present application. In the drawings and the following description, at least some well-known structures and techniques are not shown in order to avoid unnecessarily obscuring the present application; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the description of the present application, it is to be noted that, unless otherwise indicated, the meaning of "plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like indicate an orientation or positional relationship merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The directional terms appearing in the following description are all directions shown in the drawings and do not limit the specific structure of the embodiments of the present application. In the description of the present application, it should also 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 directly connected or indirectly connected. The specific meaning of the terms in the present application can be understood as appropriate by one of ordinary skill in the art.

For a better understanding of the technical solutions and technical effects of the present application, specific embodiments will be described in detail below with reference to the accompanying drawings.

In the existing steer-by-wire system, the mechanical connection of a middle shaft on the traditional steering system is eliminated, and the design and arrangement of the front suspension of the chassis and the cabin of the vehicle are more flexible. In the conventional steer-by-wire system, when a controller (Electronic Control Unit, ECU) receives a hand feeling simulation request command from a whole vehicle, the controller controls a hand feeling motor to output a requested torque, the torque is applied to a steering shaft and transmitted to the steering wheel after being reduced and increased by a reduction mechanism, a user of the vehicle can feel the force simulating the impact of a road surface on the steering wheel, and a torque sensor connected to the steering shaft measures the torque on the steering shaft and transmits the torque to the controller. If the hand motor fails, the steering wheel will not receive the torque signal and the steering wheel will be able to rotate without angular limitation.

Referring to fig. 1, fig. 1 is a schematic diagram of a split structure of a steering device according to an embodiment of the present application. Embodiments of the first aspect of the present application provide a steering apparatus 100. The steering device 100 includes a mounting case 5, a steering shaft 1, a rotating disc 2, a fixed disc 3, and a limiting assembly 4. The steering shaft 1 passes through the installation shell 5 and is rotationally connected with the installation shell 5; the rotating disc 2 is connected with one end of the steering shaft 1, and one side of the rotating disc 2 away from the steering shaft 1 is provided with a spiral groove 21; the fixed disc 3 is arranged on one side of the rotating disc 2 away from the steering shaft 1 and is fixedly connected with the mounting shell 5; the limiting assembly 4 comprises a moving member 41 and an elastic member 42, wherein a part of the moving member 41 is accommodated in the spiral groove 21 and is slidably connected with the rotating disc 2 along the spiral groove 21, and the elastic member 42 is connected with the moving member 41 and the fixed disc 3 along the radial direction of the fixed disc 3.

In the steering device 100 provided by the application, the fixed disk 3 is fixedly connected with the mounting shell 5, one end of the steering shaft 1 is connected with the rotating disk 2, the other end of the steering shaft 1 is connected with the steering wheel of the vehicle, and when the user rotates the steering wheel, the steering wheel drives the steering shaft 1 to rotate, so that the steering shaft 1 drives the rotating disk 2 to rotate between the fixed disk 3 and the mounting shell 5. The part of the moving member 41 is accommodated in the spiral groove 21 and slidably connected to the rotary disk 2 along the spiral groove 21, and the elastic member 42 connects the moving member 41 and the fixed disk 3 in the radial direction of the fixed disk 3. The rotating disc 2 rotates while driving the moving member 41 to rotate in the spiral groove 21, and at the same time, part of the moving member 41 moves away from or near the center of the fixed disc 3 in the radial direction of the fixed disc 3, thereby driving one end of the elastic member 42 to move. Under the action of the external force of the moving member 41, the elastic member 42 deforms, so that the user rotating the steering wheel can feel resistance by the elastic force of the elastic member 42, and therefore, the steering wheel can be prevented from unlimited rotation, and the elastic member 42 can also provide resilience force for the return steering wheel. The steering device 100 provided by the application can provide a rotation resistance moment for a steering wheel and limit the rotation of the steering wheel under the condition that the resistance moment simulated by the hand motor fails.

Optionally, the fixing plate 3 further includes a plurality of connection holes, and the plurality of connection holes are disposed at intervals along the circumference of the fixing plate 3, and the bolts can pass through the connection holes to fixedly connect the fixing plate 3 and the mounting case 5.

Referring to fig. 2-4 in combination, fig. 2 is a schematic structural view of a fixing disc according to an embodiment of the present application, fig. 3 is a schematic structural view of an assembly of the fixing disc and a limiting component according to an embodiment of the present application, and fig. 4 is a sectional view of fig. 3 along a dashed line L. In some alternative embodiments, the fixed disk 3 has a limiting groove 31 extending along a radial direction of the fixed disk 3, and a part of the moving member 41 is accommodated in the limiting groove 31 and slidably connected to the fixed disk 3 along the limiting groove 31, and the elastic member 42 is accommodated in the limiting groove 31 and connects the moving member 41 and the fixed disk 3 along the radial direction of the fixed disk 3.

In these alternative embodiments, part of the moving member 41 and the elastic member 42 are accommodated in the limiting groove 31, and the elastic member 42 connects the moving member 41 and the fixed disk 3, respectively, and the moving member 41 slides in the limiting groove 31 and applies pressure to the elastic member 42, and since the limiting groove 31 extends radially along the fixed disk 3, the limiting groove 31 can better enable the moving member 41 to apply a force to the elastic member 42 along the radial direction of the fixed disk 3, so as to reduce the force applied by the moving member 41 to the elastic member 42 from being dispersed along other directions.

Referring to fig. 5 and fig. 6 in combination, fig. 5 is a schematic structural diagram of a limiting assembly according to an embodiment of the present application, and fig. 6 is a schematic structural diagram of an assembly of a rotating disc and a second sliding block according to an embodiment of the present application. In some alternative embodiments, the number of elastic members 42 is two, and the moving member 41 is disposed between the two elastic members 42.

In these alternative embodiments, the moving member 41 is disposed between two elastic members 42, and the two elastic members 42 may be respectively connected to opposite ends of the moving member 41. When the moving member 41 moves to the end of the spiral groove 21, one of the two elastic members 42 may be compressed to the limit by the moving member 41 within the limit groove 31, so that the moving member 41 cannot move within the limit groove 31, at which time the steering wheel of the vehicle is rotated to the left or right to the rotational limit.

In some alternative embodiments, the moving member 41 includes a first sliding block 411 and a second sliding block 412, the first sliding block 411 being connected to the elastic member 42, the second sliding block 412 being for moving along the spiral groove 21.

In these alternative embodiments, the first sliding block 411 may be disposed in the limiting groove 31 to linearly move in the radial direction of the fixed disk 3, and part of the second sliding block 412 is disposed in the limiting groove 31 and part of the second sliding block 412 moves along the spiral groove 21. The first sliding block 411 and the second sliding block 412 may be an integral piece, and the first sliding block 411 and the second sliding block 412 may be separated from each other, and may be replaced in time when the first sliding block 411 or the second sliding block 412 is damaged, without replacing the entire moving member 41, so that the replacement cost of the moving member 41 may be reduced. The second sliding block 412 is driven by the rotation of the rotating disc 2 to move along the spiral groove 21, and the second sliding block 412 cannot move continuously after moving to the end point of the spiral groove 21, and needs to move reversely. The first sliding block 411 and the second sliding block 412 can be mutually matched and connected, the steering shaft 1 drives the rotating disc 2 to rotate, the rotating disc 2 drives the second sliding block 412 to move, and the second sliding block 412 drives the first sliding block 411 to linearly move along the radial direction of the fixed disc 3, so that the elastic piece 42 is compressed or stretched.

Alternatively, the spiral groove 21 may extend from the center of the rotating disk 2 to form two annular paths, from the point a to the point B, which is the first annular path S1, from the point B to the point C, which is the second annular path S2. When the steering device 100 is at the initial position, i.e. the steering wheel is in the return state, the moving member 41 may be located at the point B, and at this time, the elastic member 42 located in the limiting groove 31 is not deformed, and no force is applied to the moving member 41. When the steering shaft 1 drives the rotating disc 2 to rotate clockwise to reach the rotation limit of steering wheel right, the moving member 41 can move to the point C along the limiting groove 31 and the spiral groove 21 at the same time, one of the two elastic members 42 is compressed while the moving member 41 moves, and the other is stretched, so that the two elastic members 42 generate a resisting moment on the moving member 41. When the steering shaft 1 drives the rotating disc 2 to rotate anticlockwise to reach the rotation limit of steering left, the moving member 41 can move to the point a along the limiting groove 31 and the spiral groove 21 at the same time, one of the two elastic members 42 is compressed while the moving member 41 moves, and the other elastic member 42 is stretched, so that the two elastic members 42 generate a resisting moment on the moving member 41.

In some alternative embodiments, the first sliding block 411 includes a main body 4111 and two connecting columns 4112, the two connecting columns 4112 are respectively disposed on two opposite sides of the main body 4111, and the two elastic members 42 are respectively sleeved on the connecting columns 4112.

In these alternative embodiments, two connecting posts 4112 separated on opposite sides of the main body portion 4111 may be better connected with the two elastic members 42.

In some alternative embodiments, the first sliding block 411 further includes a groove 4113 formed in the main body 4111, and a portion of the second sliding block 412 is in interference fit with the groove 4113, and a portion of the second sliding block 412 protrudes from the groove 4113.

In these alternative embodiments, the interference fit of a portion of the second slider 412 with the groove 4113 may make the first slider 411 and the second slider 412 connection more stable, thereby preventing the second slider 412 from falling out of the groove 4113 when rotating. Part of the second sliding block 412 and the first sliding block 411 are arranged in the limit groove 31, and part of the second sliding block 412 is arranged in the spiral groove 21.

Alternatively, the second slider 412 may be a sphere when the cross-sectional shape of the spiral groove 21 is a semicircle, and the second slider 412 may be a cylinder when the cross-sectional shape of the spiral groove 21 is a rectangle. The present application is not limited thereto, and the cross-sectional shape of the spiral groove 21 and the shape of the second slider 412 are adapted to each other so that the second slider 412 and the first slider 411 can be coupled with each other with a better fit.

In some alternative embodiments, the fixed disk 3 includes a receiving cavity 32, the receiving cavity 32 being in communication with the limit slot 31, the receiving cavity 32 being configured to receive the rotatable disk 2.

In these alternative embodiments, the inner diameter of the receiving cavity 32 is slightly larger than the outer diameter of the rotatable plate 2 to better receive the rotatable plate 2.

In some alternative embodiments, the radial length of the limiting groove 31 along the fixed disk 3 is less than or equal to the radial length of the rotating disk 2.

In these alternative embodiments, the path of movement of the spacing assembly 4 within the spacing groove 31 may be reduced.

In some alternative embodiments, the radial length of the limiting groove 31 along the fixed disk 3 is equal to the linear length of both ends of the spiral groove 21.

In these alternative embodiments, the second slider 412 may be located at the middle position of the spiral groove 21 and the first slider 411 may be located at the middle position of the limit groove 31 when the steering wheel is in the return state. When the steering shaft 1 drives the rotating disc 2 to rotate clockwise or counterclockwise to reach the rotation limit of the steering wheel at the initial position, the second sliding block 412 may be located at the end of the spiral groove 21, and the first sliding block 411 may be located at the end of the limiting groove 31.

Referring to fig. 7 in combination, fig. 7 is a schematic structural diagram of a rotating disc according to an embodiment of the present application. In some alternative embodiments, the rotating disc 2 further comprises a disc portion 22 and a steering shaft mounting portion 23 connected, the spiral groove 21 being provided in the disc portion 22, the steering shaft mounting portion 23 being for connection with the steering shaft 1.

In these alternative embodiments, the disc portion 22 and the steering shaft mounting portion 23 may be coaxially coupled discs, and the projected area of the steering shaft mounting portion 23 is smaller than the projected area of the disc portion 22 in the thickness direction of the rotary disc 2.

In some alternative embodiments, the inner surface of the steering shaft mounting portion 23 is provided with an internal spline 24, and the steering shaft 1 includes an external spline 11, and the internal spline 24 and the external spline 11 are coupled to each other in a fitting manner.

In these alternative embodiments, the steering shaft mounting part 23 is in spline connection with the steering shaft 1, the internal spline 24 and the external spline 11 are multi-tooth parts, the coupling stress between the two parts is relatively uniform, the centering accuracy is high, and the centering stability is good.

An embodiment of a second aspect of the present application provides a vehicle, including a steering device provided in any one of the embodiments of the first aspect of the present application. The second aspect of the present application has the beneficial effects of the first aspect of the present application, and is not described herein.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.

In addition, the term "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be understood that in the embodiments of the present application, "B corresponding to a" means that B is associated with a, from which B may be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.

The foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any equivalent modifications or substitutions will be apparent to those skilled in the art within the scope of the present application, and these modifications or substitutions should be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (12)

1. A steering apparatus, characterized by comprising:

a mounting shell;

the steering shaft penetrates through the mounting shell and is rotationally connected with the mounting shell;

the rotating disc is connected with one end of the steering shaft, and one side of the rotating disc, which is far away from the steering shaft, is provided with a spiral groove;

the fixed disc is at least partially arranged on one side of the rotating disc away from the steering shaft and is fixedly connected with the mounting shell;

the limiting assembly comprises a moving part and an elastic part, wherein a part of the moving part is accommodated in the spiral groove and is in sliding connection with the rotating disc along the spiral groove, and the elastic part is connected with the moving part and the fixed disc along the radial direction of the fixed disc.

2. The steering device according to claim 1, wherein the fixed disk has a limiting groove extending radially along the fixed disk, the other end of the moving member is received in the limiting groove and slidably connected to the fixed disk along the limiting groove, and the elastic member is received in the limiting groove and connects the moving member and the fixed disk in the radial direction of the fixed disk.

3. The steering device according to claim 2, wherein the number of the elastic members is two, and the moving member is provided between the two elastic members.

4. A steering device according to claim 3, wherein the moving member comprises a first slider connected to the elastic member and a second slider for moving along the spiral groove.

5. The steering device of claim 4, wherein the first slider comprises a main body and two connecting posts, the two connecting posts are respectively arranged on two opposite sides of the main body, and the two elastic members are respectively sleeved on the connecting posts.

6. The steering device of claim 5, wherein the first slider further comprises a groove formed in the body portion, a portion of the second slider being in interference engagement with the groove, and a portion of the second slider protruding from the groove.

7. The steering device of claim 2, wherein the fixed disk includes a receiving cavity in communication with the limit slot, the receiving cavity for receiving the rotatable disk.

8. The steering device according to claim 2, wherein a radial length of the limit groove along the fixed disk is smaller than or equal to a radial length of the rotating disk.

9. The steering device as claimed in claim 8, wherein the limit groove has a length in a radial direction of the fixed disk equal to a linear length of both ends of the spiral groove.

10. The steering apparatus according to claim 1, wherein the rotating disc further comprises a disc portion and a steering shaft mounting portion connected to each other, the spiral groove being provided in the disc portion, the steering shaft mounting portion being for connection with the steering shaft.

11. The steering device according to claim 10, wherein an inner surface of the steering shaft mounting portion is provided with an internal spline, the steering shaft includes an external spline, and the internal spline and the external spline are coupled to each other in a fitting manner.

12. A vehicle comprising a steering device according to any one of claims 1-11.

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