CN113619674B

CN113619674B - Folding steering wheel

Info

Publication number: CN113619674B
Application number: CN202110928870.5A
Authority: CN
Inventors: 周厚林; 汪伟; 温宏杰; 陈勇军
Original assignee: Shanghai Lingang Junsheng Automobile Safety System Co ltd
Current assignee: Shanghai Lingang Junsheng Automobile Safety System Co ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2023-02-10
Anticipated expiration: 2041-08-13
Also published as: CN113619674A

Abstract

The application provides a folding steering wheel, which belongs to the technical field of steering wheels and particularly comprises a central part and two rims positioned on two opposite sides of the central part, wherein the central part is arranged on a steering column of a vehicle; the wheel rim locking device comprises a wheel rim, a driving device and a locking device, wherein the driving device and the locking device are arranged in the central portion, the driving device can drive the two wheel rims to rotate between a storage position close to the vehicle steering column and a driving position far away from the vehicle steering column, and the locking device locks the wheel rims when the wheel rims move to the driving position. Through the processing scheme, the space of the cockpit is saved, the structures of the driving device and the locking device are simplified, and the cost is saved.

Description

Folding steering wheel

Technical Field

The present application relates to the field of steering wheels, and more particularly, to a folding steering wheel.

Background

With the development of automobile intelligentization and automatic driving technologies, the problem that the traditional steering wheel occupies the space of a cab is increasingly highlighted.

The whole car factories and the steering wheel factories design and manufacture a steering wheel so as to normally use the steering wheel in a manual driving scene, reduce the occupied space of the steering wheel in an automatic driving scene and save the space of a driving cabin.

Disclosure of Invention

In view of this, the present application provides a foldable steering wheel, which solves the problems in the prior art and saves the space of the cockpit.

The application provides a folding steering wheel adopts following technical scheme:

a folding steering wheel comprises a central part and two rims positioned on two opposite sides of the central part, wherein the central part is installed on a steering column of a vehicle, the rims comprise a holding part and a connecting part connected with the central part, and the connecting part is pivotally installed at the top of one side, close to a driver, of the central part;

the wheel rim locking device is characterized in that a driving device and a locking device are arranged in the central portion, the driving device can drive the two wheel rims to rotate between a storage position where the two wheel rims are close to the vehicle steering column and a driving position where the two wheel rims are far away from the vehicle steering column, and the locking device locks the wheel rims when the wheel rims move to the driving position.

Optionally, the rim is U-shaped, and includes two connecting portions at two ends and a middle holding portion, a supporting seat and a rotating shaft are arranged at the central portion, two outer end faces of the supporting seat are respectively adjacent to two inner end faces of the connecting portions, the rotating shaft penetrates through the two connecting portions and the supporting seat, the rotating shaft is fixedly connected with the connecting portions, and the rotating shaft is pivotally connected with the supporting seat.

Optionally, drive arrangement includes driving motor and transmission assembly, the outer fixed mounting of pivot has the gear, driving motor installs central part bottom and rotation axis perpendicular to central part bottom upwards extends, transmission assembly includes scroll bar and a pair of turbine, scroll bar one end fixed connection be in driving motor's rotation axis, the turbine sets up in the central part, one side with the scroll bar meshing, the opposite side respectively with correspond epaxial gear engagement.

Optionally, the turbine includes one-level big turbine, one-level little turbine, second grade turbine, one-level little turbine with the coaxial and fixed connection of one-level big turbine, one-level big turbine with the scroll bar meshing, one-level little turbine with the second grade turbine meshing, the second grade turbine with gear engagement.

Optionally, the driving device is externally wrapped by a housing, the other end of the worm is rotatably connected to the top of the housing, the first-stage large turbine and the first-stage small turbine are provided with a first-stage turbine shaft, the second-stage turbine is provided with a second-stage turbine shaft, the first-stage turbine shaft and the second-stage turbine shaft are fixedly mounted on a side wall portion of the housing, and the housing is further provided with a notch for the second-stage turbine to penetrate through and mesh with the gear.

Optionally, the locking device includes flexible power component, a pair of locking round pin and guide part, and is a pair of the locking round pin is arranged respectively two wheel rims are located two of central part homonymy near connecting portion, the locking round pin passes through guide part slidable ground is fixed on the central part, be equipped with the confession on the connecting portion the male locking hole of locking round pin, the wheel rim is located when driving the position, flexible power component drives a pair of the locking round pin gets into the locking hole of two connecting portion respectively, the locking the wheel rim.

Optionally, the telescopic power assembly comprises a locking driving assembly, a support, a sliding shaft and a pair of locking connecting rods, the support is provided with an opening portion extending along the axial direction of the steering column of the vehicle, the sliding shaft slides in the opening portion, one end of each locking connecting rod is connected to the corresponding sliding shaft, the other end of each locking connecting rod is connected to the corresponding locking pin, the locking driving assembly drives the sliding shaft to slide up and down in the opening portion, and the locking pins are driven by the locking connecting rods to move between positions close to or far away from the locking holes.

Alternatively, the locking link is rotatably connected to the slide shaft and the locking pin through hinge pins, respectively.

Optionally, the locking driving assembly includes a motor, a driving connecting rod and a driving rod, an output end of the motor is fixedly connected to the driving connecting rod to drive the driving connecting rod to perform a reciprocating sector motion, two ends of the driving rod are rotatably connected to the driving connecting rod and the sliding shaft through hinge pins, respectively, and the reciprocating sector motion of the driving connecting rod drives a hinge joint of the driving rod and the driving connecting rod to perform a reciprocating circular motion so as to drive the sliding shaft to slide up and down in the opening portion.

Optionally, the central portion is covered with an upper cover member, and the storage positions of the two rims are located in a projection area of the upper cover member.

To sum up, the application comprises the following beneficial technical effects:

1. when a driver drives the vehicle manually, the driving device drives the two rims to be unfolded and positioned at a driving position, so that the rims are in a state that the driver can normally operate, and meanwhile, the locking device locks the rims positioned at the driving position, so that the rims are not shaken when the driver operates the rims, and the driving device is not damaged due to reverse torque transmission;

2. by designing a set of driving device to simultaneously drive the two rims to synchronously rotate, the structure of the foldable steering wheel is simplified, and the cost of the steering wheel is reduced;

3. when the sliding shaft is positioned at the uppermost end and the lowermost end of the opening part, the whole set of locking device is forced to stop moving, the motor is in a locked-rotor state, even if the motor is continuously in a power-on state, the locking device can not be influenced to stop moving, for the power-on state and the locking position of the motor, complicated electronic elements are not needed for control, only two circuits are needed for respectively controlling the clockwise rotation and the anticlockwise rotation of the motor, for the power-on time of clockwise rotation and anticlockwise rotation at each time, only the length of the sliding shaft which is slightly longer than that obtained by calculation is needed for moving from the uppermost end to the lowermost end, or the time needed for moving from the lowermost end to the uppermost end is needed, the whole set of device is greatly simplified, the cost is reduced, and the promotion and application are easy.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of a foldable steering wheel rim in a driving position according to the present application;

FIG. 2 is a side view of the rim of the foldable steering wheel of the present application in a steering position;

FIG. 3 is a schematic view of a connection structure of the rim and the driving device according to the present application;

FIG. 4 is a schematic view of the mechanism of the foldable steering wheel of the present application with the rim in the stowed position;

FIG. 5 is a schematic view of the entire structure of the inside of the center portion of the folding steering wheel according to the present invention;

FIG. 6 is a schematic view of the connection structure of the worm gear, shaft, rim and locking pin of the present application;

FIG. 7 is a schematic view of the driving device of the present application;

FIG. 8 is a schematic structural view of the locking device of the present application;

FIG. 9 is a schematic view of another embodiment of the locking device of the present application;

fig. 10 is a schematic structural view of the telescopic power assembly, locking pin and guide of the present application.

Description of reference numerals: 1. a central portion; 12. a receiving cavity; 2. a rim; 21. a locking hole; 22. a grip portion; 23. a connecting portion; 3. an upper cover member; 4. a drive device; 41. a supporting seat; 42. a rotating shaft; 43. a gear; 5. a drive motor; 51. a scroll bar; 52. a housing; 521. a notch; 53. a primary turbine shaft; 54. a first-stage large turbine; 55. a first-stage small turbine; 56. a secondary turbine shaft; 57. a secondary turbine; 6. a locking device; 61. a support; 611. an opening part; 62. a guide member; 621. a through hole; 63. a locking connecting rod; 64. a locking pin; 65. a drive rod; 66. a sliding shaft; 7. a motor; 71. an output shaft; 72. the connecting rod is driven.

Detailed Description

The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The present application is capable of other and different embodiments and its several details are capable of modifications and/or changes in various respects, all without departing from the spirit of the present application. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present application, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.

It should be further noted that the drawings provided in the following embodiments are only schematic illustrations of the basic concepts of the present application, and the drawings only show the components related to the present application rather than the numbers, shapes and dimensions of the components in actual implementation, and the types, the numbers and the proportions of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.

In addition, in the following description, specific details are provided to provide a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.

The embodiment of the application provides a folding steering wheel.

As shown in fig. 1 to 4, a folding steering wheel includes a central portion 1 and two rims 2 located on opposite sides of the central portion 1, the central portion 1 being mounted on a steering column of a vehicle, the rims 2 including a grip portion 22 and a connecting portion 23 connecting the central portion 1, the connecting portion 23 being pivotably mounted on a top portion of the central portion 1 on a side close to a driver. A drive device 4 and a locking device 6 are arranged in the central portion 1, the drive device 4 can drive the two rims 2 to rotate between a storage position close to the vehicle steering column and a driving position far away from the vehicle steering column, and the locking device 6 locks the rims 2 when the rims 2 move to the driving position.

When the vehicle is driven by a driver manually, the driving device 4 drives the two rims 2 to be unfolded and positioned at the driving position, the two expanded rims 2 are positioned on the same plane, the rims 2 are enabled to be in a state of normal operation of the driver, and meanwhile, the locking device 6 locks the rims 2 positioned at the driving position, so that the rims 2 are not rocked when the driver operates the rims 2, and the driving device 4 is not damaged due to reverse transmission of torque. When automatic driving, perhaps when driver need not operate the steering wheel, locking device 6 cancels the locking to wheel rim 2, and wheel rim 2 can rotate, and drive arrangement 4 drives two wheel rims 2 and rotates to steering column one side, and two wheel rims 2 are drawn close to the steering column and are located the position of accomodating, are in fold condition to reduce the occupation space of steering wheel.

In addition, a set of driving device 4 is designed to simultaneously drive the two rims 2 to synchronously rotate, so that the structure of the foldable steering wheel is simplified, and the cost of the steering wheel is reduced.

The central part 1 is covered with an upper cover part 3, and the containing positions of the two rims 2 are positioned in the projection area of the upper cover part 3; so that the rim 2 in the storage position is shielded by the upper cover 3.

As shown in fig. 1, 5 and 6, the rim 2 is U-shaped, and includes two connecting portions 23 at two ends and a middle holding portion 22, and the central portion 1 is provided with a supporting seat 41 and a rotating shaft 42, in the embodiment of the present invention, each rim 2 is correspondingly provided with two supporting seats 41 and one rotating shaft 42, and the bottom of the supporting seat 41 is fixedly connected with the bottom of the central portion 1. The two outer end faces of the supporting seat 41 are respectively adjacent to the inner end faces of the two connecting portions 23, i.e., one set of the supporting seat 41 is located between the two connecting portions 23 of one rim 2. The rotating shaft 42 passes through the two connecting parts 23 and the supporting seat 41, and the rotating shaft 42 is fixedly connected with the connecting parts 23, so that the connecting parts 23 are pivotally connected relative to the supporting seat 41. The driving device 4 rotates the rotating shaft 42 to realize the rotation of the rim 2.

As shown in fig. 5, 6 and 7, the driving device 4 includes a driving motor 5 and a transmission assembly, a gear 43 is fixedly installed outside the rotating shaft 42, the driving motor 5 is installed at the bottom of the central portion 1, and the rotating shaft extends upward perpendicular to the bottom of the central portion 1, the transmission assembly includes a worm 51 and a pair of worm wheels, one end of the worm 51 is fixedly connected to the rotating shaft of the driving motor 5, the pair of worm wheels is arranged in the central portion 1, one side of each worm wheel is engaged with the worm 51, and the other side of each worm wheel is engaged with the corresponding gear 43 on the rotating shaft 42.

The driving motor 5 is started, the scroll rods 51 are driven to rotate through the rotating shaft, one scroll rod 51 drives the pair of turbines to rotate simultaneously, the gear 43 and the rotating shaft 42 are driven to rotate, finally, power is transmitted to the wheel rims 2 simultaneously, the driving motor 5 drives the two wheel rims 2 to rotate, the structure of the driving device 4 is simplified, and cost is saved.

Specifically, the turbine includes a first-stage large turbine 54, a first-stage small turbine 55 and a second-stage turbine 57, the first-stage small turbine 55 and the first-stage large turbine 54 are coaxially and fixedly connected, the first-stage large turbine 54 is meshed with the worm 51, the first-stage small turbine 55 is meshed with the second-stage turbine 57, and the second-stage turbine 57 is meshed with the gear 43.

A large transmission ratio is provided between the worm 51 and the large turbine 54, for example 100:1; a large transmission ratio, such as 3:1, is also provided between the first stage small turbine 55 and the second stage turbine 57. A smaller gear ratio, for example 1:1, is provided between the secondary turbine 57 and the gear 43. Thus, a high speed rotational movement of the drive motor 5, for example 3000 rpm, can be converted into a slower rotational movement of the rim 2, for example 10 rpm. That is, the rotation of the rim 2 from the extended position to the folded retracted position takes about 1.5 seconds, which gives the driver a more comfortable feel. In other embodiments, the transmission ratio of the worm 51 to the first-stage large turbine 54, the first-stage small turbine 55 to the second-stage turbine 57, and the second-stage turbine 57 to the gear 43 can be changed as appropriate according to the rotation speed of the rim 2.

The driving device 4 is externally wrapped by a housing 52, and the other end of the scroll 51 is rotatably connected to the top of the housing 52. The first-stage large turbine 54 and the first-stage small turbine 55 have a first-stage turbine shaft 53 for stable rotation of the first-stage large turbine 54 and the first-stage small turbine 55, the second-stage turbine 57 has a second-stage turbine shaft 56 for stable rotation of the second-stage turbine 57, the first-stage turbine shaft 53 and the second-stage turbine shaft 56 are fixedly mounted on a side wall portion of the housing 52, and the housing 52 further has a notch 521 for the second-stage turbine 57 to pass through to engage with the gear 43.

As shown in fig. 5, 8 and 9, the locking device 6 includes a telescopic power assembly, a pair of locking pins 64 and guide members 62, in the present embodiment, the number of locking pins 64 is two, each locking pin 64 corresponds to one connecting portion 23, the number of guide members 62 is the same as the number of locking pins 64, and each guide member 62 corresponds to one locking pin 64. In the steering wheel device according to the embodiment of the present application, two sets of locking devices 6 are provided in total.

The bottom end of guide 62 is fixed in the bottom of central part 1, a pair of locking round pin 64 is arranged respectively in two wheel rims 2 and is located near two connecting portion 23 of central part 1 homonymy, locking round pin 64 passes through guide 62 slidable and fixes on central part 1, locking round pin 64 is supported by guide 62, be equipped with the through-hole 621 on the guide 62, for the slip of locking round pin 64 provides support and guide effect, be equipped with the locking hole 21 that supplies locking round pin 64 to insert on connecting portion 23, when wheel rim 2 is located the driving position, flexible power component drives a pair of locking round pin 64 and gets into the locking hole 21 of two connecting portion 23 respectively, locking wheel rim 2.

As shown in fig. 8 and 10, the telescopic power assembly includes a locking driving assembly, a support 61, a sliding shaft 66 and a pair of locking links 63, wherein the support 61 is fixed at the bottom of the central portion 1 and has an opening portion 611 extending along the axial direction of the steering column of the vehicle, the sliding shaft 66 slides in the opening portion 611, one end of each of the pair of locking links 63 is connected to the sliding shaft 66, the other end is connected to the corresponding locking pin 64, the locking driving assembly drives the sliding shaft 66 to slide up and down in the opening portion 611, and the locking links 63 drive the locking pins 64 to move between positions close to or far away from the locking holes 21.

The lock link 63 is rotatably connected with the slide shaft 66 and the lock pin 64, respectively, by a hinge pin whose axial direction is parallel to the axial direction of the slide shaft 66.

The length of the opening 611 is specially calculated and designed to match the lengths of the locking links 63, the locking pins 64 and the like, so that when the sliding shaft 66 is at the uppermost end of the opening 611, the included angle between the two locking links 63 is at the maximum angle, and is greater than 90 degrees and less than 180 degrees. The locking pins 64 are in a most extended state, that is, the locking pins 64 are inserted into the locking holes 21 of the rim 2, thereby firmly fixing the rim 2 in a horizontally extended state. When the slide shaft 66 is positioned at the lowermost end of the opening portion 611, the angle between the two lock links 63 is at the minimum angle state, and is less than 90 degrees, and the lock pin 64 is in the innermost retracted state, that is, the lock pin 64 is completely withdrawn from the lock hole 21 of the rim 2, and the rim 2 can rotate about the rotation shaft 42.

The locking driving assembly comprises a motor 7, a driving connecting rod 72 and a driving rod 65, the output end of the motor 7 is fixedly connected with the driving connecting rod 72, the output end of the motor 7 is the output shaft 71 of the motor 7, the output shaft 71 of the motor 7 is fixedly connected with the driving connecting rod 72 through a fixing nut, and the output shaft 71 of the motor 7 rotates to drive the driving connecting rod 72 to do reciprocating sector motion. Both ends of the driving rod 65 are rotatably connected to the driving link 72 and the sliding shaft 66 through hinge pins, respectively, and the reciprocating fan-shaped motion of the driving link 72 drives the hinge point of the driving rod 65 and the driving link 72 to make reciprocating circular motion, so as to drive the sliding shaft 66 to slide up and down in the opening portion 611.

When the output shaft 71 of the motor 7 rotates clockwise, the driving link 72 is driven to rotate clockwise synchronously, because the other end of the driving link 72 is connected to the driving rod 65 and can rotate relative to each other, so as to drive the driving rod 65 to move upward and drive the sliding shaft 66 to move upward along the opening portion 611. As the sliding shaft 66 moves upward, the included angle between the two locking links 63 increases, and the two locking pins 64 respectively extend outward and are inserted into the locking holes 21 of the rim 2 until the sliding shaft 66 is at the uppermost end of the opening 611, the included angle between the two locking links 63 is at the maximum angle, and the two locking pins 64 are at the most outward extending state. In this embodiment, the angle through which drive link 72 rotates is less than 90 degrees.

From the initial state, when the output shaft 71 of the motor 7 rotates counterclockwise, the driving link 72 is brought to rotate counterclockwise in synchronization. Since the other ends of the driving links 72 are connected to the driving rods 65 and are rotatable relative to each other, the driving rods 65 are driven to move downward, and the sliding shafts 66 are driven to move downward along the opening portion 611. As the sliding shaft 66 moves downward, the included angle between the two locking links 63 becomes smaller and smaller, and the two locking pins 64 respectively move in a retracting manner to withdraw from the locking holes 21 of the rim 2 until the sliding shaft 66 is located at the lowermost end of the opening portion 611, the included angle between the two locking links 63 is in a minimum angle state, and the locking pins 64 are in an innermost retracting state, that is, the locking pins 64 are completely withdrawn from the locking holes 21 of the rim 2. In this embodiment, the angle through which drive link 72 rotates at this time is also less than 90 degrees.

When the sliding shaft 66 is located at the uppermost end and the lowermost end of the opening portion 611, the entire set of locking devices is forced to stop moving, the motor 7 is in a locked state, and even if the motor 7 continues to be in a power-on state, the locking device 6 is not influenced to stop moving. That is, for the power-on state and the stop position of the motor 7, it is not necessary to use complicated electronic components for control, and only two circuits are needed to respectively control the clockwise rotation and the counterclockwise rotation of the motor 7. The energization time for each clockwise and counterclockwise rotation is only required to be slightly longer than the calculated time required for the slide shaft 66 to move from the uppermost end to the lowermost end, or from the lowermost end to the uppermost end. In the time that the power-on time is longer than the movement time, although the motor 7 is in the power-on state, the whole set of locking device 6 is in the stop state, and the motor 7 is in the locked-rotor state, at this time, the electric energy of the motor 7 can be converted into heat energy. Since this process takes a short time, about 1 to 2 seconds, the amount of heat generated is limited and does not cause damage to the overall system.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A folding steering wheel, characterized by comprising a central portion and two rims located on opposite sides of the central portion, the central portion being mounted on a steering column of a vehicle, the rims comprising a grip portion and a connecting portion connecting the central portion, the connecting portion being pivotably mounted on a top portion of the central portion on a side close to a driver;

the wheel rim is U-shaped and comprises two connecting parts at two ends and a middle holding part, a supporting seat and a rotating shaft are arranged at the central part, two outer side end faces of the supporting seat are respectively adjacent to the inner side end faces of the two connecting parts, the rotating shaft penetrates through the two connecting parts and the supporting seat, the rotating shaft is fixedly connected with the connecting parts and can be pivotally connected relative to the supporting seat, and a gear is fixedly arranged outside the rotating shaft;

the driving device comprises a driving motor and a transmission assembly, the driving motor is mounted at the bottom of the central portion, a rotating shaft of the driving motor is perpendicular to the bottom of the central portion and extends upwards, the transmission assembly comprises a worm and a pair of turbines, one end of the worm is fixedly connected to the rotating shaft of the driving motor, the turbines are arranged in the central portion, one side of each turbine is meshed with the worm, the other side of each turbine is meshed with the corresponding gear on the rotating shaft, each turbine comprises a first-stage large turbine, a first-stage small turbine and a second-stage turbine, the first-stage small turbines are coaxial and fixedly connected with the first-stage large turbines, the first-stage large turbines are meshed with the worm, the first-stage small turbines are meshed with the second-stage turbines, and the second-stage turbines are meshed with the gears;

the locking device comprises a locking pin, when the rim moves to the driving position, the locking pin is inserted into a locking hole of the connecting part to lock the rim, and the locking hole extends from the end face of the connecting part to the holding part along the length direction of the two connecting parts.

2. The folding steering wheel according to claim 1, wherein the driving unit is externally covered with a housing, the other end of the worm is rotatably connected to a top portion of the housing, the large turbine and the small turbine have a first turbine shaft, the second turbine has a second turbine shaft, the first turbine shaft and the second turbine shaft are mounted on a side wall portion of the housing, and the housing further has a notch for the second turbine to pass through and engage with the gear.

3. The foldable steering wheel according to claim 1, wherein the locking device comprises a telescopic power assembly, a pair of locking pins and a guide member, the pair of locking pins are respectively disposed near two of the connecting portions of the two rims located on the same side of the central portion, the locking pins are slidably fixed on the central portion through the guide member, the connecting portions are provided with locking holes for the locking pins to be inserted, when the rim is located at the driving position, the telescopic power assembly drives the pair of locking pins to enter the locking holes of the two connecting portions respectively, and the rim is locked.

4. The folding steering wheel of claim 3, wherein the telescopic power assembly includes a locking driving assembly, a support, a sliding shaft, and a pair of locking links, the support has an opening extending along an axial direction of the steering column, the sliding shaft slides in the opening, one end of each of the pair of locking links is connected to the sliding shaft, the other end of each of the pair of locking links is connected to the pair of locking pins, the locking driving assembly drives the sliding shaft to slide up and down in the opening, and the locking pins are driven by the locking links to move between positions close to or far away from the locking holes.

5. The folding steering wheel of claim 4, wherein the detent link is pivotally connected to the slide shaft and the detent pin, respectively, by a hinge pin.

6. The foldable steering wheel according to claim 4, wherein the locking driving assembly comprises a motor, a driving link and a driving rod, an output end of the motor is fixedly connected with the driving link to drive the driving link to perform a reciprocating sector motion, two ends of the driving rod are respectively rotatably connected with the driving link and the sliding shaft through hinge pins, and the reciprocating sector motion of the driving link drives a hinge point of the driving rod and the driving link to perform a reciprocating circular motion to drive the sliding shaft to slide up and down in the opening portion.

7. The folding steering wheel according to any one of claims 1 to 6, wherein the central portion is covered with an upper cover, and the storage positions of the two rims are located within a projection area of the upper cover.