CN212529934U - Steering mechanism and electric vehicle - Google Patents

Abstract

The utility model provides a steering mechanism and electric motor car relates to non-motor technical field. The steering mechanism comprises a base, a steering wheel and a steering wheel, wherein the base is provided with a hollow accommodating cavity; the rotating mechanism is arranged in the accommodating cavity and can rotate relative to the base; and the return structure is connected with both the base and the rotating mechanism, and can generate a restoring force for driving the rotating mechanism to reset along with the rotation of the rotating mechanism. The utility model discloses a steering mechanism has promoted the stationarity and the folding convenience of vehicle operation.

Description

Steering mechanism and electric vehicle

Technical Field

The utility model belongs to the technical field of the non-motor vehicle, more specifically relates to a steering mechanism and electric motor car.

Background

The steering mechanism is a guide mechanism for controlling the driving direction of the non-motor vehicle. The related steering mechanism comprises a base and a rotating mechanism, and the rotating mechanism can rotate relative to the base under the steering force applied by a user and realizes steering.

The related rotating mechanism can flexibly steer under the action of steering force, but the steering angle is not easy to control. Moreover, the rotating mechanism cannot be automatically reset, and the rotating mechanism can be reset only by additionally applying an acting force opposite to the steering force direction from the outside. It should be noted that the reset means returning the rotating mechanism to the initial position. The complexity and uncertainty of the external environment are integrated, the applied turning force is difficult to control, so that the applied reaction force is suddenly large or not timely applied, the left and right deflection of the rotating mechanism is uncertain, and the driving stability is influenced; and in the process of folding the vehicle, because the rotating mechanism is stressed to rotate freely, the carrying and the storage are influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a steering mechanism and electric motor car to solve the technical problem who how promotes the stationarity of vehicle operation and folding convenience.

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

the utility model provides a steering mechanism, which comprises a base and a steering wheel, wherein the base is provided with a hollow accommodating cavity; the rotating mechanism is arranged in the accommodating cavity and can rotate relative to the base; and the return structure is connected with the base and the rotating mechanism, and can generate a return force for driving the rotating mechanism to reset along with the rotation of the rotating mechanism.

Furthermore, the restoring structure is a deformable component which moves along with the rotation of the rotating mechanism to generate deformation.

Further, the reply structure comprises: the first return structure is connected with one end of the rotating mechanism; and the second return structure is connected with the other end of the rotating mechanism.

Further, the rotating mechanism includes: the rotating part is provided with a first bulge and a second bulge at two opposite ends respectively; the first middle stopping piece is adjacent to one end of the rotating piece and provided with a first groove for the first bulge to be inserted into, and the length of the first groove is greater than that of the first bulge along the rotating direction of the rotating piece; the first stopping piece is connected with the first recovery structure; the second middle stopping piece is adjacent to the other end of the rotating piece and provided with a second groove for inserting the second bulge into, and the length of the second groove is greater than that of the second bulge along the rotating direction of the rotating piece; the second stopping piece is connected with the second restoring structure; under the non-rotating state, along the rotatable direction of the rotating part, the end wall of one end of the first groove is abutted with the first protrusion, and the end wall of the other end of the second groove is abutted with the second protrusion.

Further, the rotating member includes: the first bulge is arranged at one end of the rotating shaft, and the rotating shaft is arranged adjacent to the first stopping piece; and the anti-backlash ring is sleeved at the other end of the rotating shaft and is fixedly connected with the rotating shaft, the anti-backlash ring is provided with the second bulge, and the anti-backlash ring is adjacent to the second stopping piece.

Further, a first stop piece and a second stop piece are arranged on the wall surface of the base adjacent to the accommodating cavity in a protruding mode; the first stop member and the second stop member are respectively positioned at two opposite ends of the base; the surface of the first middle stopper adjacent to the base is provided with a first stopping piece in a protruding mode and can be abutted against the first stopping piece, and the surface of the second middle stopper adjacent to the base is provided with a second stopping piece in a protruding mode and can be abutted against the second stopping piece.

Further, the rotating mechanism includes: the rotating piece is provided with a third bulge; the third stopping piece is arranged adjacent to the rotating piece, and is provided with a third groove which is used for inserting the third protrusion and limiting the third protrusion to rotate relative to the third groove; the third stop member is coupled to the return structure.

Furthermore, a third stop piece is arranged on the wall surface of the base adjacent to the accommodating cavity in a protruding mode, and a third stop piece capable of being abutted against the third stop piece is arranged on the surface of the third stop piece adjacent to the base in a protruding mode.

Further, the rotating mechanism comprises a body and a fourth protrusion protruding out of the body; the base is provided with a fourth groove for inserting the fourth protrusion into, and the length of the fourth groove is greater than that of the fourth protrusion along the rotating direction of the rotating mechanism; the first recovery structure is connected with one end of the fourth protrusion and one end of the fourth groove, and the second recovery structure is connected with the other end of the fourth protrusion and the other end of the fourth groove.

Further, the return structure is disposed around an outer surface of the rotating mechanism in a rotating direction of the rotating mechanism.

An electric vehicle comprising the steering mechanism of any one of the above.

The utility model provides a pair of steering mechanism includes base, slewing mechanism and answer structure. The return structure is connected with the base and the rotating mechanism, and the return structure can generate a return force for driving the rotating mechanism to reset along with the rotation of the rotating mechanism. The return structure is arranged on the steering mechanism, the return structure can generate a restoring force for driving the rotating mechanism to reset along with the rotation of the rotating mechanism, and after the steering force is cancelled, the rotating mechanism can be automatically reset by the restoring force without additionally applying a rotating force. The steering mechanism of the utility model can lead the rotating mechanism to automatically reset after rotating, thereby being beneficial to controlling the steering angle and improving the stability of the traveling crane; and effectively prevented slewing mechanism's free rotation at folding in-process, made things convenient for carrying and accomodating of vehicle.

Drawings

FIG. 1 is a schematic view of the operating principle of the steering mechanism;

fig. 2 is an exploded schematic view of a steering mechanism according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a base of a steering mechanism according to an embodiment of the present invention;

fig. 4 is a sectional view of an assembly of a steering mechanism according to an embodiment of the present invention;

FIG. 5a is a schematic view of a structural arrangement of first protrusions and/or second protrusions;

FIG. 5b is a schematic view of another arrangement of the first protrusions and/or the second protrusions;

FIG. 5c is a schematic view of another arrangement of the first protrusions and/or the second protrusions;

FIG. 5d is a schematic view of another arrangement of the first protrusions and/or the second protrusions;

fig. 6a is a schematic view of the operation principle of the steering mechanism of the embodiment of the present invention rotating in the counterclockwise direction;

fig. 6b is a schematic view of the working principle that the steering mechanism of the embodiment of the present invention rotates clockwise;

fig. 7 is a schematic structural view of a first protrusion and a first groove of a steering mechanism according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a second protrusion and a second groove of the steering mechanism according to the embodiment of the present invention;

fig. 9a is a schematic structural view of a first stop member and a second stop member of a base of a steering mechanism according to an embodiment of the present invention;

fig. 9b is a schematic structural view of a first stopper of a base of a steering mechanism according to an embodiment of the present invention;

fig. 10 is a schematic view of a bottom view of the steering mechanism and an operation principle of the first blocking member according to the embodiment of the present invention;

fig. 11 is a top view of a steering mechanism and a schematic diagram of the operation principle of a second blocking member according to an embodiment of the present invention;

FIG. 12 is a schematic view of another steering mechanism operating principle;

FIG. 13 is a schematic view of the operation of a third blocking member of another steering mechanism;

FIG. 14 is a schematic view of the operation of an alternative return structure of the steering mechanism;

fig. 15 is a schematic view showing the operation principle of the return structure of another steering mechanism.

Description of reference numerals:

10-handlebar, 11-riser, 12-head tube, 13-front fork, 2-base, 21-receiving cavity, 221-first stop, 222-second stop, 223-third stop, 23-fourth groove, 3-rotation mechanism, 31-rotation member, 311-rotation shaft, 3111-first protrusion, 3112-third protrusion, 312-anti-backlash ring, 3121-second protrusion, 32-first stop, 321-first groove, 322-first stop, 33-second stop, 331-second groove, 332-second stop, 34-third stop, 341-third groove, 342-third stop, 35-body, 36-fourth protrusion, 4-return structure, 41-first return structure, 42-second restoring structure

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The individual features described in the embodiments can be combined in any suitable manner without departing from the scope, for example different embodiments and aspects can be formed by combining different features. In order to avoid unnecessary repetition, various combinations of the specific features of the present invention are not described separately.

In the following description, the term "first \ second \ …" is referred to merely to distinguish different objects and does not indicate that there is identity or relationship between the objects. It should be understood that the references to "above" and "below" are to be interpreted as referring to the orientation during normal use.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The embodiment of the utility model provides a pair of steering mechanism, it can regard as to turn to the joint and use in the non-motor vehicle, for example electric motor car, bicycle, balance car and scooter etc.. It should be noted that the application scene type in the present invention is not limited to the steering mechanism of the present invention.

The operation principle of the steering mechanism is exemplified by taking the steering mechanism as an example applied to an electric vehicle. As shown in fig. 1, the steering mechanism may include a handlebar 10, a vertical tube 11, a head tube 12 and a front fork 13, which are sequentially arranged from top to bottom, the vertical tube 11 and the head tube 12 are coaxially connected, the handlebar 10 is fixedly connected to an upper end of the vertical tube 11, and a length extending direction of the handlebar 10 is perpendicular to a length extending direction of the vertical tube 11. When the electric vehicle is ready to turn, the outside applies thrust to the handlebar 10, the vertical pipe 11 rotates under the action of torque and drives the head pipe 12 connected with the vertical pipe to rotate, and the head pipe 12 can control the turning angle so as to ensure the flexibility and stability of turning. The lower extreme and the front fork 13 of head pipe 12 are connected, constitute steering mechanism's guide system jointly, the rotation of head pipe 12 further drives front fork 13 and takes place to deflect, front fork 13 includes left front fork and right front fork, the plantago wheel is located between left front fork and the right front fork, left front fork is connected to the one end of the pivot of front wheel, right front fork is connected to the opposite other end, consequently, the front wheel can take place to turn to relatively ground along with the deflection of front fork 13, realize the steering process of electric motor car.

Take the steering mechanism to use in the electric motor car as an example, in the embodiment of the present invention, as shown in fig. 2, the steering mechanism includes a base 2, a rotating mechanism 3 and a return structure 4. The base 2 is stationary, for example, the base 2 is an integral part of a vehicle frame. As shown in fig. 3, the base 2 has a hollow accommodating cavity 21, and specifically, the base 2 may be a substantially cylindrical barrel structure, and the base 2 is provided with a hollow cavity penetrating from one end to the other end along the length extension direction of the base 2, that is, the accommodating cavity 21. As shown in fig. 4, the rotating mechanism 3 is disposed in the accommodating chamber 21 and is capable of rotating relative to the base 2, and specifically, the rotating mechanism 3 and the accommodating chamber 21 are coaxial, which is the rotation center line O' of the steering mechanism. Under the action of the steering force applied from the outside, the rotating mechanism 3 rotates around the rotation center line O ', and the rotating mechanism 3 can rotate relative to the base 2 because the base 2 and the rotation center line O' are relatively static.

As shown in fig. 4, the restoring structure 4 is connected to both the base 2 and the rotating mechanism 3, and the restoring structure 4 can generate a restoring force for driving the rotating mechanism 3 to reset along with the rotation of the rotating mechanism 3. Specifically, when the restoring structure 4 is subjected to an external force, a reaction force opposite to the external force can be generated, and after the external force is cancelled, the reaction force of the restoring structure 4 can restore the structural form to the initial state, which is to be noted that the initial state refers to a state in which the restoring structure 4 is not subjected to the external force. The base 2 and the turning mechanism 3 are connected by a return structure 4.

The operation of the steering mechanism is described as follows: the rotating mechanism 3 starts to rotate in the first direction when being subjected to an external force at the initial position, which is a position where the rotating mechanism 3 stays in a state where it is not subjected to any external force. Under the driving of the rotating mechanism 3, the rotating mechanism 3 transmits the steering force to the restoring structure 4, so that the restoring structure 4 in the initial state generates a reaction force opposite to the first direction, namely the restoring force. And as the rotating mechanism 3 continues to rotate in the first direction, the restoring force will continue to increase and apply the restoring force to the rotating mechanism 3 connected to the restoring structure 4.

When the steering force exerted by the external force on the rotating mechanism 3 is greater than the restoring force exerted by the restoring structure 4 exerted on the rotating mechanism 3, the rotating mechanism 3 continues to rotate along the first direction within a certain range; when the steering force applied to the rotating mechanism 3 is the same as the restoring force applied to the rotating mechanism 3, the rotating mechanism 3 reaches a balanced state and is static relative to the base 2; when the turning force applied to the turning mechanism 3 is smaller than the restoring force applied to the turning mechanism 3, the turning mechanism 3 turns back in the direction opposite to the first direction. After the steering force applied from the outside is cancelled, the rotating mechanism 3 is only acted by the restoring force of the restoring structure 4, so that the rotating mechanism 3 rotates back along the direction opposite to the first direction. In the process of rotating in the direction opposite to the first direction, the restoring structure 4 has a tendency of restoring to the initial state, the restoring force generated by the restoring structure 4 is gradually reduced along with the tendency, and the restoring force disappears when the restoring structure 4 is completely restored to the initial state, that is, the restoring force is reduced to zero. At this time, the rotating mechanism 3 is no longer subjected to the restoring force of the restoring structure 4, and the rotation, i.e., the steering, is stopped. When the return structure 4 returns to the initial state, the rotating mechanism 3 correspondingly returns to the initial position. Therefore, the rotation mechanism 3 that stops rotating returns to the initial position, i.e., the reset, at the same time when the restoring force disappears.

The embodiment of the utility model provides a through set up the answer structure at steering mechanism, the answer structure can produce the restoring force that drives slewing mechanism and reset along with slewing mechanism's rotation. The utility model discloses a set up the answer structure on steering mechanism, answer the structure and can produce the restoring force that drives the slewing mechanism and reset along with the slewing mechanism rotation, this restoring force is opposite with the steering force direction, after the steering force cancels, this restoring force can make the slewing mechanism reset automatically, does not need to exert the slewing force additionally, makes steering mechanism have better controllability, has improved the stability of driving a vehicle; and effectively prevented slewing mechanism's free rotation at folding in-process, made things convenient for carrying and accomodating of vehicle.

In some embodiments, as shown in fig. 4, the restoring structure 4 is a deformable member that deforms when moving with the rotation of the rotating mechanism 3. Specifically, the restoring structure 4 is a component that can be elastically deformed by an external force, and can be restored to an initial state after the external force is removed. The variable component can be an elastic element such as a torsion spring, a tension spring, a compression spring, a coil spring or a rubber cushion. The deformable member deforms with the rotation of the rotating mechanism 3 to generate a restoring force, and the restoring force restores the deformable member from the deformed state to the initial state in the case where the steering force applied from the outside is cancelled. The deformable component is used as a specific form of the return structure, so that the return structure is simple and convenient to install and replace.

In some embodiments, as shown in fig. 4, the restoring structure 4 includes a first restoring structure 41 and a second restoring structure 42, and the first restoring structure 41 is connected to one end of the rotating mechanism 3. Specifically, the first restoring force generated by the first restoring structure 41 restores the rotating mechanism 3 when rotating in the first direction. And the second return structure is connected with the other end of the rotating mechanism. Specifically, the second restoring force generated by the second restoring structure 42 restores the rotating mechanism 3 when it rotates in a second direction opposite to the first direction. In an exemplary embodiment, the first return structure 41 and the second return structure 42 may be torsion springs. Through setting up to two of separately independent setting with replying structure 4 and replying the structure, first reply structure 41 and second reply structure 42 promptly, can both automatic re-setting when making slewing mechanism be forward or reverse rotation to two canceling release mechanical system do not interfere with each other, can independent utility and change, are favorable to promoting the convenience of using and practice thrift the replacement cost.

In some embodiments, as shown in fig. 2, the rotating mechanism 3 includes a rotating member 31, a first stopper 32 and a second stopper 33, and opposite ends (upper and lower ends shown in fig. 2) of the rotating member 31 are provided with a first protrusion 3111 and a second protrusion 3121, respectively. Specifically, as shown in fig. 5a, the first protrusion 3111 and/or the second protrusion 3121 may be provided at a lower end surface of the rotation member 31, as shown in fig. 5b, the first protrusion 3111 and/or the second protrusion 3121 may be provided at an upper end surface of the rotation member 31, as shown in fig. 5c, the first protrusion 3111 and/or the second protrusion 3121 may be provided at an inner wall surface of the rotation member 31, as shown in fig. 5d, and the first protrusion 3111 and/or the second protrusion 3121 may be provided at an outer wall surface of the rotation member 31.

As shown in fig. 2, the first stopping element 32 is adjacent to one end of the rotating element 31, and the first stopping element 32 is located between the rotating element 31 and the first restoring structure 41 and connects one end of the rotating element 31 and the first restoring structure 41. As shown in fig. 6a, the first stopper 32 is opened for inserting the first protrusion 3111 into the first groove 321, and the length of the first groove 321 is greater than that of the first protrusion 3111 along the rotation direction of the rotating member 31. Specifically, the first stopper 32 may be a substantially annular structure, coaxial with the rotating member 31. The first middle stopper 32 has a first groove 321 formed on an inner side surface thereof, and a length of the first groove 321 (an arc length of a blank arc shown in fig. 6 a) is greater than a length of the first protrusion 3111 (a size of the first protrusion 3111 in a circumferential direction shown in fig. 6 a), so that the first protrusion 3111 can slide in the first groove 321 when rotating along with the rotating member 31.

As shown in fig. 2, the second stopping member 33 is adjacent to the other end of the rotating member 31, and the second stopping member 33 is located between the rotating member 31 and the second restoring structure 42 and connects the opposite end of the rotating member 31 and the second restoring structure 42. As shown in fig. 6b, the second stopping element 33 is opened for the second protrusion 3121 to be inserted into the second groove 331, the length of the second groove 331 is greater than the length of the second protrusion 3121 along the rotation direction of the rotating element 31, and the second stopping element 33 is connected to the second restoring structure 42. Specifically, the second stopper 33 may be a substantially annular structure, coaxial with the rotating member 31. The inner side surface of the second middle stop member 33 is provided with a second groove 331, and the length of the second groove 331 (the arc length of the blank arc segment shown in fig. 6 b) is greater than the length of the second protrusion 3121 (the size of the second protrusion 3121 in the circumferential direction shown in fig. 6 b), so that the second protrusion 3121 can slide in the second groove 331 when rotating along with the rotating member 31.

As shown in fig. 6a and 6b, in the non-rotating state, in the rotatable direction of the rotating member 31, the end wall of one end of the first notch 321 abuts against the first projection 3111, and the end wall of the other end of the second notch 331 abuts against the second projection 3121. It should be noted that the abutment means close contact, thereby restricting relative movement of two abutting objects in a certain direction. Namely: in the initial state (non-rotating state), the rotating member 31 is not subjected to an external force or a restoring force, and thus is not rotated, the protrusions of the upper and lower ends of the rotating member 31 are brought into close contact with the first and second stoppers 32 and 33, respectively. Specifically, in the exemplary embodiment, as shown in fig. 6a and 6b, the rotational direction of the rotational member 31 is clockwise or counterclockwise, and the first recess 321 and the second recess 331 each have an end wall along the rotational direction, specifically, in the initial state, the left end wall of the first recess 321 abuts against the first protrusion 3111, and the right end wall of the second recess 331 abuts against the second protrusion 3121. When the rotating member 31 is subjected to a turning force in a first direction (as indicated by an arrow in fig. 6 a), the rotating member rotates in the first direction and drives the first protrusion 3111 and the second protrusion 3121 to rotate along with the turning force in the first direction, the left end wall of the first groove 321 of the first stopper 32 is subjected to a pushing force from the first protrusion 3111, the first stopper 32 rotates along with the rotating member 31 under the pushing force, and the movement of the first stopper 32 can deform the first restoring structure 41 connected thereto and generate a restoring force opposite to the first direction; meanwhile, the second protrusion 3121 is separated from the right end wall of the second groove 331 of the second stopper 33 and slides in the second groove 331, and since the second stopper 33 is not subjected to the pushing force from the second protrusion 3121, the second stopper 33 is stationary with respect to the base 2, and thus the second restoring structure 42 does not generate a restoring force. When the steering force in the first direction is removed, the rotation member 31 may be restored by the restoring force generated by the first restoring structure 41. Similarly, when the rotating member 31 is acted by a turning force in a second direction (as indicated by the arrow in fig. 6 b) opposite to the first direction, the rotating member rotates in the second direction and drives the first protrusion 3111 and the second protrusion 3121 to rotate along with the turning force, the right end wall of the second groove 331 of the second stopper 33 is acted by a pushing force from the second protrusion 3121, the second stopper 33 rotates along with the rotating member 31 synchronously under the pushing force, and the movement of the second stopper 33 can deform the second restoring structure 42 connected with the second stopper and generate a restoring force opposite to the second direction; meanwhile, the first protrusion 3111 is separated from the left end wall of the first groove 321 of the first stopper 32 and slides in the first groove 321, and since the first stopper 32 is not subjected to the pushing force from the first protrusion 3111, the first stopper 32 is stationary with respect to the base 2, and thus the first restoring structure 41 does not generate a restoring force. When the steering force in the second direction is removed, the rotation member 31 may be restored by the restoring force generated by the second restoring structure 42.

Through setting up first middle-stop piece and second middle-stop piece at the upper and lower both ends of rotating the piece to under initial non-rotation state, along the rotatable direction of rotating the piece, first middle-stop piece and second middle-stop piece contact with rotating the piece respectively, thereby no matter rotate along which direction, all have one middle-stop piece to be promoted and carry out synchronous rotation, and then drive one and reply the structure motion and produce the restoring force, so when the external force withdraws, the homoenergetic makes to rotate through the restoring force effect and resets, consequently, the embodiment of the utility model discloses a reset after can effectual control slewing mechanism rotates.

In some embodiments, as shown in fig. 7 and 8, the rotating member 31 includes a rotating shaft 311 and an anti-backlash ring 312, one end of the rotating shaft 311 is provided with a first protrusion 3111, and the rotating shaft 311 is disposed adjacent to the first stopper 32. Specifically, as shown in fig. 7, the rotating shaft 311 may be a substantially cylindrical barrel structure, and in an exemplary embodiment, the first protrusion 3111 may be disposed on a lower end surface of the rotating shaft 311, and specifically, the first protrusion 3111 may be a protrusion protruding upward, or may be a protrusion protruding inward or outward. The first stopper 32 is coaxial with the rotation shaft 311 and is coupled to a lower end surface of the rotation shaft 311 such that the first protrusion 3111 can be located in the first groove 321. As shown in fig. 8, the anti-backlash ring 312 is sleeved on the other end of the rotating shaft 311 and is fixedly connected to the rotating shaft 311, the anti-backlash ring 312 is provided with a second protrusion 3121, and the anti-backlash ring 312 is disposed adjacent to the second stopper 33. Specifically, the anti-backlash ring 312 may be a substantially circular ring structure, and is coaxial with the rotating shaft 311, and is sleeved on the outer wall surface of the rotating shaft 311, and the inner diameter of the anti-backlash ring 312 is substantially the same as the outer diameter of the rotating shaft 311, and can rotate along with the rotation of the rotating shaft 311. In an exemplary embodiment, the second projection 3121 may be provided on an outer wall surface of the anti-backlash ring 312, and in other embodiments, the second projection 3121 may be provided on an inner wall surface of the anti-backlash ring 312 or be upwardly or downwardly convex. The second stopping member 33 is sleeved on the outer side surface of the anti-backlash ring 312, so that the second protrusion 3121 can be located in the second groove 331.

Through the setting of pivot and anti-backlash ring, will rotate the piece and divide into two parts and cooperate with first pause piece and second pause piece respectively, only set up a rotation piece relatively, the wearing and tearing that produce by pause piece and rotation piece cooperation rotation are born by pivot and two parts of anti-backlash ring to reduce the wearing and tearing probability, prolonged life, and can make things convenient for the part of independent change wearing and tearing.

In some embodiments, as shown in fig. 9a and 9b, a first stop member 221 and a second stop member 222 are protrudingly disposed on a wall surface of the base 2 adjacent to the accommodating cavity 21, and the first stop member 221 and the second stop member 222 are respectively located at two opposite ends (upper and lower ends in a use state) of the base 2. Specifically, the first stopper 221 and the second stopper 222 may be substantially rectangular protrusions, the first stopper 221 being provided on the inner wall surface of the lower end of the base 2, and the second stopper 222 being provided on the inner wall surface of the upper end of the base 2.

As shown in fig. 10, a surface of the first stopper 32 adjacent to the base 2 is provided with a first stopper 322 that can abut against the first stopper 221 in a protruding manner. Specifically, when the rotating shaft 311 rotates in the direction indicated by the arrow in fig. 10, the first protrusion 3111 pushes the first stopper 32 to rotate and drive the first blocking member 322 to rotate, at this time, the second protrusion 3121 separates from the left end wall of the second groove 331 and slides in the second groove 331, the first blocking member 322 will abut against the first stopper 221 of the base 2 before the second protrusion 3121 rotates to contact with the right end wall of the second groove 331, so as to prevent the second protrusion 3121 from abutting against the right end wall of the second groove 331 and pushing the second stopper 33 to rotate, and further prevent the second restoring structure 42 from generating restoring force to affect the independent control of the steering restoration in different directions. Furthermore, the first blocking member 322 is provided to limit the maximum rotation range of the rotation shaft 311 in the direction indicated by the arrow in fig. 10, and when the first blocking member 322 abuts against the first blocking member 221, the rotation shaft 311 cannot rotate any more.

As shown in fig. 11, a surface of the second stopper 33 adjacent to the base 2 is provided with a second stopper 332 that can abut against the second stopper 222 in a protruding manner. Specifically, when the anti-backlash ring 312 rotates in the direction indicated by the arrow in fig. 11, the second protrusion 3121 pushes the second stopper 33 to rotate and drive the second blocking member 332 to rotate, at this time, the first protrusion 3111 is separated from the left end wall of the first groove 321 and slides in the first groove 321, and the second blocking member 332 abuts against the second stopper 222 of the base 2 before the first protrusion 3111 rotates to contact with the right end wall of the first groove 321, so as to prevent the first protrusion 3111 from abutting against the right end wall of the first groove 321 and pushing the first stopper 32 to rotate, and further prevent the first restoring structure 41 from generating restoring force to affect independent control of steering and resetting in different directions. Further, the provision of the second stopper 332 may define a maximum rotation range of the anti-backlash ring 312 in the direction indicated by the arrow in fig. 11, and when the second stopper 332 abuts against the second stopper 222, the anti-backlash ring 312 cannot be rotated further.

Through the arrangement of the first stop piece, the second stop piece, the first stop piece and the second stop piece, the backlash elimination ring 312, the second stop piece 33 and the second return structure 42 at the upper end can jointly control the rotation reset in the first direction, and the rotating shaft 311, the first stop piece 32 and the first return structure 41 at the lower end can jointly control the rotation reset in the second direction opposite to the first direction; and can inject the rotation range of the rotation piece of the steering structure, and avoid the influence of the overlarge rotation angle on the safety and the stability.

In other embodiments, as shown in fig. 12, the rotating mechanism 3 includes a rotating member 31 and a third stopper 34, and the rotating member 31 is provided with a third protrusion 3112. Specifically, the third protrusion 3112 may be disposed on an upper end surface or a lower end surface of the rotation member 31, and may also be disposed on an outer wall surface or an inner wall surface of the rotation member 31, and in an exemplary embodiment, the third protrusion 3112 is disposed on the outer wall surface of the rotation member 31 for the following explanation. The third stopping member 34 is disposed adjacent to the rotating member 31, the third stopping member 34 defines a third groove 341, the third groove 341 is used for the third protrusion 3112 to insert and limit the third protrusion 3112 to rotate relative to the third groove 341, and the third stopping member 34 is connected to the return structure 4. Specifically, the fitting manner of the third protrusion 3112 and the third groove 341 may be interference fit, transition fit, or snap fit. When the rotating member 31 rotates in a first direction or a second direction opposite to the first direction under the action of a steering force, the third protrusion 3112 pushes the third stopper 34 to rotate therewith, and the restoring structure 4 connected to the third stopper 34 generates a restoring force opposite to the rotating direction, and after the steering force is removed, the restoring force generated by the restoring structure 4 can restore the rotating member 31. Thus, only one return structure 4 is arranged on the steering mechanism to control the rotation reset of the steering mechanism in a first direction and a second direction opposite to the first direction.

According to the embodiment, the automatic reset of the forward rotation or the reverse rotation of the rotating piece can be realized by only arranging the third stopping piece, so that the arrangement of parts is saved, and the cost is saved.

In other embodiments, as shown in fig. 13, a third stopper 223 protrudes from a wall surface of the base 2 adjacent to the accommodating cavity 21, and a third stopper 342 capable of abutting against the third stopper 223 protrudes from a surface of the third stopper 34 adjacent to the base 2. Specifically, the third stopping element 34 may be provided with two third stopping elements 342, the third stopping element 223 is located between the two third stopping elements 342, when the rotating element 31 rotates along the first direction, the third protrusion 3112 drives the third stopping element 34 to rotate along with the third stopping element, and further drives the third stopping element 342 to rotate, when the third stopping element 342 close to the first direction abuts against the third stopping element 223, the rotating element 31 stops rotating, and the third stopping element 342 and the third stopping element 223 close to the first direction may limit the maximum rotating range of the rotating element 31 in the first direction. Similarly, when the rotating member 31 rotates in a second direction opposite to the first direction, the third protrusion 3112 drives the third stopping member 34 to rotate along with the third stopping member 34, so as to drive the third stopping member 342 to rotate, when the third stopping member 342 and the third stopping member 223 close to the second direction abut against each other, the rotating member 31 stops rotating, and the third stopping member 342 and the third stopping member 223 close to the second direction can limit the maximum rotating range of the rotating member 31 in the second direction.

The above-described embodiment can limit the forward and reverse rotation ranges of the rotating member of the steering mechanism by providing only one set of the stopper and the blocking member, saving the component arrangement, and thus saving the cost.

In other embodiments, as shown in fig. 14, the rotating mechanism 3 includes a body 35 and a fourth protrusion 36 protruding from the body. Specifically, the body 35 may have a substantially cylindrical structure, and a fourth protrusion 36 may be disposed on an outer side surface of the body 35. The base 2 is provided with a fourth protrusion 36 inserted into the fourth groove 23, and along the rotation direction of the rotating mechanism 3, the length of the fourth groove 23 is greater than that of the fourth protrusion 36. Specifically, a fourth groove 23 may be formed in the inner wall surface of the base 2 in the circumferential direction, and the fourth projection 36 may slide in the fourth groove 23. The first restoring structure 41 connects one end of the fourth protrusion 36 and one end of the fourth groove 23, and the second restoring structure 42 connects the other end of the fourth protrusion 36 and the other end of the fourth groove 23. Specifically, the first restoring structure 41 and the second restoring structure 42 may be compression springs, which may be compressed or stretched, the first restoring structure 41 is disposed on one side of the fourth protrusion 36 close to the first direction, and the second restoring structure 42 is disposed on one side of the fourth protrusion 36 close to the second direction opposite to the first direction. When the body 35 rotates in the first direction under the action of the steering force, the fourth protrusion 36 is driven to rotate together with the body, and the fourth protrusion 36 can enable the first restoring structure 41 to be extruded to generate a compression force opposite to the first direction, namely a first restoring force; at the same time, the second restoring structure 42 is stretched by the fourth protrusion 36, and generates a stretching force opposite to the first direction, i.e. a second restoring force, and after the steering force is removed, the rotating mechanism 3 is rotated and restored in the second direction opposite to the first direction under the combined action of the first restoring force and the second restoring force. Similarly, when the body 35 rotates in a second direction opposite to the first direction under the action of the steering force, the first restoring structure 41 generates a first restoring force opposite to the second direction, and the second restoring structure 42 generates a second restoring force opposite to the second direction, and the rotating mechanism 3 is rotated and restored in the first direction opposite to the second direction under the combined action of the first restoring force and the second restoring force.

According to the embodiment, the groove is formed in the base, the pressure spring serves as the return structure and is matched with the protrusion, and the rotating piece can be automatically reset in the forward direction or the reverse direction without additionally arranging a stopping piece, so that the component cost is saved, and the structural arrangement of the steering mechanism is simplified.

In other embodiments, as shown in fig. 15, the return structure 4 is arranged around the outer surface of the turning mechanism 3 in the direction of rotation of the turning mechanism 3. Specifically, the restoring structure 4 may be a coil spring disposed around the outer surface of the rotating mechanism 3, and when the rotating mechanism 3 rotates, the restoring structure 4 can generate a restoring force opposite to the rotating direction, so as to restore the rotating mechanism 3.

According to the embodiment, the coil spring is used as a return structure, the coil spring is arranged on the outer surface of the rotating mechanism in a surrounding mode, the rotating member can be automatically reset in the forward direction or the reverse direction without additionally arranging a stopping piece, a protrusion and a groove, the component cost is saved, and the structural arrangement of the steering mechanism and the manufacturing process of parts are simplified.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims (11)

1. A steering mechanism, comprising:

a base (2) having a hollow accommodating chamber (21);

the rotating mechanism (3) is arranged in the accommodating cavity (21) and can rotate relative to the base (2);

and the restoring structure (4) is connected with the base (2) and the rotating mechanism (3), and the restoring structure (4) can generate restoring force for driving the rotating mechanism (3) to reset along with the rotation of the rotating mechanism (3).

2. Steering mechanism according to claim 1, wherein the return structure (4) is a deformable element which deforms as it moves with the rotation of the rotating mechanism (3).

3. Steering mechanism according to claim 1 or 2, wherein the return structure (4) comprises:

a first return structure (41) connected to one end of the rotating mechanism (3);

and the second return structure (42) is connected with the other end of the rotating mechanism (3).

4. A steering mechanism according to claim 3, wherein the turning mechanism (3) comprises:

a rotating member (31), opposite ends of the rotating member (31) being provided with a first projection (3111) and a second projection (3121), respectively;

a first stopper (32) adjacent to the one end of the rotating member (31) and having a first groove (321) for inserting the first protrusion (3111), wherein the length of the first groove (321) is greater than the length of the first protrusion (3111) along the rotating direction of the rotating member (31); the first stop (32) is connected to the first return structure (41);

a second middle stop member (33) adjacent to the other end of the rotating member (31) and provided with a second groove (331) for inserting the second protrusion (3121), wherein the length of the second groove (331) is greater than the length of the second protrusion (3121) along the rotating direction of the rotating member (31); the second stop (33) is connected to the second return structure (42);

wherein, in a non-rotating state, in a rotatable direction of the rotating member (31), an end wall of one end of the first groove (321) abuts against the first projection (3111), and an end wall of the other end of the second groove (331) abuts against the second projection (3121).

5. Steering mechanism according to claim 4, wherein the rotating member (31) comprises:

the rotating shaft (311), one end of the rotating shaft (311) is provided with the first protrusion (3111), and the rotating shaft (311) is arranged adjacent to the first middle stop piece (32);

the anti-backlash ring (312) is sleeved at the other end of the rotating shaft (311) and fixedly connected with the rotating shaft (311), the anti-backlash ring (312) is provided with the second protrusion (3121), and the anti-backlash ring (312) is arranged adjacent to the second stopping piece (33).

6. The steering mechanism according to claim 4 or 5, wherein a first stop member (221) and a second stop member (222) are protrudingly provided on a wall surface of the base (2) adjacent to the housing chamber (21); the first stop (221) and the second stop (222) are respectively located at opposite ends of the base (2);

the surface of the first middle stopper (32) adjacent to the base (2) is provided with a first stopper (322) capable of abutting against the first stopper (221) in a protruding mode, and the surface of the second middle stopper (33) adjacent to the base (2) is provided with a second stopper (332) capable of abutting against the second stopper (222) in a protruding mode.

7. Steering mechanism according to claim 1 or 2, wherein the turning mechanism (3) comprises:

a rotating member (31), the rotating member (31) being provided with a third projection (3112);

the third stopping piece (34) is arranged adjacent to the rotating piece (31), a third groove (341) is formed in the third stopping piece (34), and the third groove (341) is used for the third protrusion (3112) to be inserted into and limiting the third protrusion (3112) to rotate relative to the third groove (341); the third stop (34) is connected to the return structure (4).

8. The steering mechanism according to claim 7, wherein a third stopper (223) is protrudingly provided on a wall surface of the base (2) adjacent to the accommodation chamber (21), and a third stopper (342) abuttable with the third stopper (223) is protrudingly provided on a surface of the third stopper (34) adjacent to the base (2).

9. Steering mechanism according to claim 3, wherein the turning mechanism (3) comprises a body (35) and a fourth protrusion (36) protruding from the body (35); the base (2) is provided with a fourth groove (23) for inserting the fourth protrusion (36), and the length of the fourth groove (23) is greater than that of the fourth protrusion (36) along the rotating direction of the rotating mechanism (3); the first restoring structure (41) is connected with one end of the fourth protrusion (36) and one end of the fourth groove (23), and the second restoring structure (42) is connected with the other end of the fourth protrusion (36) and the other end of the fourth groove (23).

10. Steering mechanism according to claim 1 or 2, wherein the return structure (4) is arranged around the outer surface of the turning mechanism (3) in the direction of rotation of the turning mechanism (3).

11. An electric vehicle characterized by comprising the steering mechanism according to any one of claims 1 to 10.

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