CN114179897A

CN114179897A - Folding steering wheel

Info

Publication number: CN114179897A
Application number: CN202111565014.4A
Authority: CN
Inventors: 唐勋
Original assignee: Yanfeng International Seating Systems Co Ltd
Current assignee: Yanfeng International Seating Systems Co Ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-03-15
Anticipated expiration: 2041-12-20
Also published as: WO2023116543A1; CN114179897B

Abstract

The invention relates to a folding steering wheel, which comprises a steering wheel and an adjusting mechanism, wherein an output shaft of the adjusting mechanism is fixedly connected with the steering wheel to drive the steering wheel to synchronously rotate, the adjusting mechanism comprises a motor, a worm, a duplicate gear, an output gear and a bidirectional clutch, wherein the motor drives the output gear through the meshed worm and the duplicate gear, the output gear is provided with at least one pair of pusher dog components which axially extend out, the bidirectional clutch comprises a braking part, a clamping part and at least one pair of roller components, the clamping part is connected with the steering wheel and is rotatably arranged in the middle of the braking part through the roller components, and the pusher dog components are matched with the roller components to control the clutch state of the bidirectional clutch. According to the folding steering wheel, the large transmission ratio and the high efficiency can be realized through the two-stage gear transmission of the duplicate gear and the output gear, and the folding steering wheel has the advantages of zero clearance, high strength and high efficiency through the bidirectional clutch.

Description

Folding steering wheel

Technical Field

The present invention relates to automotive steering wheels, and more particularly to a folding steering wheel.

Background

At present, most of automobile steering wheel folding mechanisms are motor-combined gear boxes or screw rod mechanisms, and the performances of steering wheel gap/strength/durability and the like are difficult to meet, so that a steering wheel folding adjusting mechanism with zero gap/high strength/good durability is urgently needed in the market.

Disclosure of Invention

In order to solve the problems of large gap and the like of the steering wheel folding mechanism in the prior art, the invention provides a folding steering wheel.

The folding steering wheel comprises a steering wheel and an adjusting mechanism, wherein an output shaft of the adjusting mechanism is fixedly connected with the steering wheel to drive the steering wheel to synchronously rotate, the adjusting mechanism comprises a motor, a worm, a duplicate gear, an output gear and a bidirectional clutch, wherein the motor drives the output gear through the meshed worm and the duplicate gear, the output gear is provided with at least one pair of pusher dog assemblies which axially extend out, the bidirectional clutch comprises a braking part, a clamping part and at least one pair of roller assemblies, the clamping part is connected with the steering wheel and rotatably arranged in the middle of the braking part through the roller assemblies, and the pusher dog assemblies are matched with the roller assemblies to control the clutch state of the bidirectional clutch.

Preferably, when the motor is not operated, the bidirectional clutch is in a self-locking state, and the steering wheel keeps a stable rest position.

Preferably, when the motor works, the pusher dog subassembly controls the two-way clutch to unlock and separate so as to drive the steering wheel to rotate.

Preferably, the dual gear has a helical gear and a transmission gear fixedly connected along the rotation axis thereof, the helical gear is in mesh transmission with the worm, and the transmission gear is in mesh transmission with the output gear.

Preferably, the caliper has at least two radial bosses spaced apart circumferentially and at least one wedge surface located between the bosses, and the finger assembly includes two fingers distributed on opposite sides of the roller assembly, and the roller assembly is composed of two rollers and an elastic body, and the two rollers are disposed between the inner ring surface of the brake and the wedge surface of the caliper with the elastic body therebetween.

Preferably, in the initial locked condition, the elastomer is always in compression and pushes the two rollers into direct contact with the inner ring surface and the wedge surface.

Preferably, in the initial locked condition, the clearance between the finger and the adjacent boss is greater than the clearance between the finger and the adjacent roller.

Preferably, when a finger is in contact with an adjacent roller, there is also a gap between the other finger and the adjacent boss, and continued pushing of the adjacent roller by the finger causes compression of the elastomer so that the roller leaves the wedge surface forming an annular gap to unlock the jaw.

Preferably, the output gear drives the jaw to switch the steering wheel between the deployed and folded positions when the other finger is in contact with the adjacent boss.

Preferably, the folding steering wheel further comprises a mounting plate on which the steering wheel is rotatably mounted.

Preferably, the folding steering wheel further comprises a fastener by which the adjustment mechanism is mounted on the mounting plate.

Preferably, the adjusting mechanism comprises a motor end cover, a gear box end cover and a gear box, wherein the motor end cover and the gear box end cover are fixedly connected to two opposite sides of the gear box, and the gear box is fixedly connected to the mounting plate through the fastener.

Preferably, the fastener comprises a press-riveting bolt and a nut matched with the press-riveting bolt, the press-riveting bolt is in clearance fit with a mounting hole of the gear box, the press-riveting bolt is in interference press fit with the mounting hole of the braking part, and the press-riveting bolt is used as a mounting interface and is fixedly mounted on the mounting plate through the nut.

Preferably, the motor, worm and duplicate gear are mounted between the motor end cap and the gear box, and the output gear is mounted between the gear box end cap and the gear box.

Preferably, the dual gear has a rear end shaft and a front end shaft at opposite ends of its axis of rotation, the rear end shaft engaging with the central bore of the motor end cap with a clearance so as not to interfere with rotation within the central bore, the front end shaft engaging with the limit bore of the gear case end cap with a clearance so as not to interfere with rotation within the limit bore.

Preferably, the finger assembly is in spaced engagement with and extends from the central bore of the end cap of the gearbox.

Preferably, the clamping member has an axially projecting clamping shaft which is inserted with clearance into the central bore of the gearbox so as not to impede rotation of the clamping member about its axis.

Preferably, the central bore of the output gear is a clearance fit with the clamping shaft so as not to impede rotation of the output gear thereabout.

Preferably, the folding steering wheel further comprises a balancing weight which is arranged opposite to the adjusting mechanism so as to ensure that the total weight of two sides of the folding steering wheel is equal, and the gravity center is positioned on the symmetry axis of the balancing weight.

Preferably, the folding steering wheel further comprises a further adjustment mechanism arranged opposite the adjustment mechanism and synchronously connected with the adjustment mechanism by a link, the further adjustment mechanism omitting the motor and the worm relative to the adjustment mechanism.

Preferably, the double gears of the adjusting mechanism and the further adjusting mechanism each have a connecting rod interface into which a connecting rod is inserted.

Preferably, the helical gear of the dual gear of the further adjustment mechanism is a non-effective gear and the transmission gear is an effective gear.

According to the folding steering wheel, the large transmission ratio and the high efficiency can be realized through the two-stage gear transmission of the duplicate gear and the output gear, and the folding steering wheel has the advantages of zero clearance, high strength and high efficiency through the bidirectional clutch.

Drawings

Fig. 1 is a schematic view of the overall structure of a folding steering wheel according to a preferred embodiment of the present invention;

FIG. 2 is a front view of the folding steering wheel of FIG. 1;

FIG. 3 is a schematic view of the overall structure of the adjustment mechanism of the folding steering wheel of FIG. 1;

FIG. 4 is an exploded view of the adjustment mechanism of FIG. 3;

FIG. 5 illustrates the meshing of the duplicate gear and the output gear of the adjustment mechanism of FIG. 4;

FIG. 6 is a view from another perspective of FIG. 4;

FIG. 7 is a view from another perspective of FIG. 3;

FIG. 8 illustrates an initial state of a bi-directional clutch of the folding steering wheel of FIG. 1;

FIG. 9 shows an intermediate state of the two-way clutch of the folding steering wheel of FIG. 1;

FIG. 10 illustrates an unlocked state of the bi-directional clutch of the folding steering wheel of FIG. 1;

FIG. 11 illustrates a rotational direction of a caliper of the bi-directional clutch of FIG. 1;

FIG. 12 is a front view of a folding steering wheel in accordance with another preferred embodiment of the present invention;

FIG. 13 is a schematic view of the overall structure of the folding steering wheel of FIG. 12;

fig. 14 shows the dual gear of the adjustment mechanism of fig. 13.

Detailed Description

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

Example 1

As shown in fig. 1, the foldable steering wheel according to the present embodiment includes a steering wheel 1, a mounting plate 2, an adjusting mechanism 3 and a fastening member 4, wherein the steering wheel 1 is rotatably mounted on the mounting plate 2 to freely rotate around its rotation center, the adjusting mechanism 3 is mounted on the mounting plate 2 through the fastening member 4, and its output shaft is fixedly connected to the steering wheel 1 to drive the steering wheel 1 to synchronously rotate. Therefore, the steering wheel 1 is controlled by the adjusting mechanism 3, and the output shaft of the adjusting mechanism 3 drives the steering wheel 1 to rotate synchronously when running, so that the steering wheel 1 is switched between the unfolding position and the folding position. The deployed position, i.e., the use position, is shown by a solid line in fig. 1, and the driver can normally use the steering wheel 1 in this position to drive the vehicle. The folded position, i.e. the non-use position, is shown in dotted lines in fig. 1, where the steering wheel is folded hidden from operation by the driver.

In the present embodiment, as shown in fig. 2, the adjusting mechanism 3 is disposed on the right side, and an equal weight clump weight 5 is disposed on the corresponding left side, and both sides are equal in weight, so as to ensure that the overall center of gravity is on the symmetry axis L. It should be understood that the adjustment mechanism may also be arranged on the left side, with an equally heavy weight being provided on its corresponding right side. Of course, adjusting mechanisms can be arranged on both sides, and at the moment, the adjusting mechanisms on both sides are controlled simultaneously, so that the synchronous rotation of the rotating points on both sides of the steering wheel is ensured.

As shown in fig. 3, the adjusting mechanism 3 includes a motor end cover 31, a gear box end cover 32 and a gear box 33, wherein the motor end cover 31 and the gear box end cover 32 are fixedly connected to opposite sides of the gear box 33, and the gear box 33 is fixedly connected to the mounting plate 2 (see fig. 1) by a fastener 4. It should be understood that the motor end cap 31 and the gear case 33 may be assembled together by a bayonet or screw or heat staking or welding process, and the gear case end cap 32 and the gear case 33 may likewise be assembled together by a bayonet or screw or heat staking or welding process.

As shown in fig. 4, the adjusting mechanism 3 further includes a motor 34, a worm 35, a dual gear 36 and an output gear 37, wherein the motor 34, the worm 35 and the dual gear 36 are installed between the motor end cover 31 and the gear box 33, and the output gear 37 is installed between the gear box end cover 32 and the gear box 33.

The motor 34 is fixed by the motor end cover 31 and the gear box 33, and the worm 35 is press-fitted on the output shaft of the motor 34 in an interference manner and meshed with the duplicate gear 36 so as to drive the duplicate gear 36 to rotate around the axis thereof through the motor 34. The double gear 36 has a helical gear 361 and a transmission gear 362 fixedly connected along the rotation axis thereof, the helical gear 361 is in mesh transmission with the worm 35, and the transmission gear 362 is in mesh transmission with the output gear 37 through the gear box 33 (see fig. 5), so that the output gear 37 is driven to rotate around the axis thereof by the motor 34. The dual gear 36 also has a rear end shaft 363 and a front end shaft 364 at opposite ends of its rotational axis, the rear end shaft 363 engaging with the central bore 311 of the motor cover 31 with a clearance so as not to interfere with rotation within the central bore 311, the front end shaft 364 engaging with the limiting bore 321 of the gear case cover 32 with a clearance so as not to interfere with rotation within the limiting bore 321.

As shown in fig. 6, output gear 37 is restrained against axial play by gearbox end cap 32 and gearbox 33, which has at least one axially projecting pair of finger assemblies (three pairs in this embodiment) on the side facing away from motor 34, each pair of finger assemblies including a first finger 371 and a second finger 372 circumferentially spaced from one another. The finger assembly fits with clearance with the central bore 322 of the gearbox end cap 32 and protrudes from within the central bore 322.

The adjusting mechanism 3 further comprises a two-way clutch 38, the clutched state of which is controlled by the finger assembly of the output gear 37. Specifically, when the motor 34 runs, the gear train (the worm 35, the dual gear 36 and the output gear 37) is driven to move, and the pusher dog assembly on the output gear 37 controls the bidirectional clutch 38 to unlock and separate, so as to drive the steering wheel 1 to rotate; when the motor 34 does not operate, the bidirectional clutch 38 is in a self-locking state, and the steering wheel 1 cannot be rotated by an external force and is in a very stable position. As shown in fig. 4, the bidirectional clutch 38 includes a stopper 381, and the gear case 33 is press-fitted to the stopper 381 by the fastener 4, see fig. 3 and 7. Specifically, the fastener 4 includes a clinch bolt that is clearance-fitted with the mounting hole 331 (see fig. 4) of the gear case 33 and interference-press-fitted with the mounting hole 3811 (see fig. 4) of the stopper 381. In the present embodiment, the fastening member 4 further includes a nut (see fig. 2) engaged with the press-riveting bolt, and the press-riveting bolt is fixed to the mounting plate 2 (see fig. 1) as a mounting interface by the nut.

The bi-directional clutch 38 further includes a caliper 382 and at least one pair (three pairs in this embodiment) of roller assemblies, wherein the caliper 382 is rotatably mounted to the middle of the brake 381 via the roller assemblies. The jaw 382 has an axially projecting jaw shaft 3821 which is inserted with clearance into the central bore 332 (see fig. 6) of the gear case 33 so as not to interfere with rotation of the jaw 382 about its axis, and a central bore 373 (see fig. 4) of the output gear 37 is in clearance fit with the jaw shaft 3821 so as not to interfere with rotation of the output gear 37 thereabout. In the present embodiment, the output end 3822 of the clamp 382 connected to the steering wheel 1 has a hexagonal shape and has a profile structure of a steering wheel interface. It should be understood that the hexagonal shape is presented herein by way of example only and not limitation.

In this embodiment, as shown in fig. 8, the jaw 382 has three

radial bosses

3823, 3824, 3825 circumferentially spaced from one another and three wedge surfaces 3826 between adjacent radial bosses. One of the wedge surfaces 3826 is specifically described as an example. First finger 371 and second finger 372 are distributed on opposite sides of the roller assembly. The roller assembly is composed of a first roller 383, a second roller 384 and an elastic body 385, i.e., the first roller 383 and the second roller 384 are disposed between an inner annular surface 3812 of the stopper 381 and a wedge surface 3826 of the caliper 382 with the elastic body 385 interposed therebetween. It should be appreciated that the roller assemblies mate with the wedge surfaces 3826, and thus the number of roller assemblies is equal to the number of wedge surfaces 3826. The elastomer 385 is always in compression and thus pushes the first and

second rollers

383, 384 directly into contact with the inner ring surface 3812 and the wedge surface 3826, such that the bi-directional clutch 38 is locked in both the clockwise and counterclockwise directions. When the brake 381 is fixed, either clockwise or counterclockwise driving the clamping member 382 will not drive the clamping member 382 to rotate. When the clamping member 382 is fixed, the braking member 381 cannot be driven to rotate whether the braking member 381 is driven clockwise or counterclockwise.

The operation mechanism of the adjustment mechanism 3 will be described in detail below with reference to the drawings. The motor 34 drives the worm 35 to rotate synchronously, and the worm 35 is engaged with the helical gear 361 to drive the dual gear 36 to rotate. The transmission gear 362 meshes with the output gear 37 to rotate the output gear 37. A finger assembly on the output gear 37 cooperates with a bi-directional clutch 38 to control its clutched state. In the initial state shown in fig. 8, a first gap b1 is provided between the first finger 371 and the first boss 3823, a second gap a1 is provided between the first finger 371 and the first roller 383, and the first gap b1 is larger than the second gap a 1. A third gap b2 equal to the first gap b1 is provided between the second finger 372 and the second boss 3824, a fourth gap a2 equal to the second gap a1 is provided between the second finger 372 and the second roller 384, and the third gap b2 is larger than the fourth gap a 2.

When the output gear 37 rotates clockwise, the first finger 371 and the second finger 372 rotate clockwise, the first finger 371 gets closer to the first roller 383, the second finger 372 gets closer to the second boss 3824, i.e., the second gap a1 becomes smaller, and the third gap b2 also becomes smaller. When first finger 371 contacts first roller 383, second finger 372 also has a gap b 2' with second boss 3824 because third gap b2 is greater than first gap a1, as shown in fig. 9. As the output gear 37 continues to rotate clockwise, the first finger 371 pushes the first roller 383, thereby compressing the elastomer 385, so that the first roller 383 leaves the wedge surface 3826 to form an annular gap c, as shown in fig. 10, and the locking element 382 is unlocked in the clockwise direction. When the second finger 372 contacts the second boss 3824, the output gear 37 rotates clockwise to push the clamping member 382 to rotate clockwise, as shown in fig. 11. The steering wheel will travel from the folded position (i.e., the non-use position) shown in phantom in fig. 1 to the unfolded position (i.e., the use position) shown in solid in fig. 1. It should be understood that here the output gear 37 rotates clockwise and the steering wheel travels from the folded position to the unfolded position, corresponding to the case where the motor 34 of the present embodiment is disposed on the right side. In the embodiment where the motor is disposed on the left side, the output gear rotates clockwise and the steering wheel is moved from the deployed position to the folded position.

Similarly, the output gear 37 rotates counterclockwise to effect counterclockwise rotation of the clamping member 382, as shown in fig. 11. The steering wheel will travel from the deployed position (i.e., the use position) shown in solid lines in fig. 1 to the folded position (i.e., the non-use position) shown in phantom lines in fig. 1.

Example 2

The difference from the embodiment 1 is mainly that the two sides of the adjusting

mechanisms

3a and 3b are arranged, but only one side is provided with a motor as a driving part, the other side is provided with no motor as a driven part, a synchronous connecting rod is used between the two parts to ensure the synchronous operation of the two sides, and one side without the motor is also provided with a balancing weight to ensure the total weight of the two sides to be equal, see fig. 12. Hereinafter, the description will be given mainly of the portions different from embodiment 1, and the portions identical to embodiment 1 will not be described again.

As shown in fig. 13, the right adjusting mechanism 3a and the left adjusting mechanism 3b are respectively fixed on the right side and the left side of the mounting plate, and are connected by the connecting rod 6 to realize synchronous rotation of the two sides, and the output shafts of the adjusting

mechanisms

3a and 3b on the two sides are respectively fixedly connected with the interfaces on the two sides of the steering wheel, so as to drive the steering wheel to synchronously rotate.

In this embodiment, there is a motor in the right-side adjusting mechanism 3a as an active adjusting mechanism, and the left-side adjusting mechanism 3b has no motor and is a passive adjusting mechanism, and the two are connected through the connecting rod 6, and the motor of the right-side adjusting mechanism 3a can drive the adjusting

mechanisms

3a and 3b on both sides to synchronously operate at the same time, so as to adjust the position of the steering wheel. Of course, the motor may be installed in the left-side adjustment mechanism as an active adjustment mechanism, and the right-side adjustment mechanism may be installed without a motor as a passive adjustment mechanism.

As shown in fig. 14, the dual gear 36 ' of the right-side adjustment mechanism 3a additionally has a link interface 365 engaged with the link 6 (see fig. 13) in addition to the helical gear 361 ', the transmission gear 362 ', the rear end shaft 363 ', and the front end shaft 364 '. The two ends of the connecting rod 6 are inserted into the connecting rod interfaces 365 of the adjusting

mechanisms

3a and 3b at the two sides respectively, so that the duplicate gears at the two sides rotate synchronously.

In the present embodiment, for the left-side adjusting mechanism 3b, there is no motor and worm in the system, and the bevel gear 361 'of the dual gear 36' is an idle gear, i.e. when synchronously adjusting the steering wheel, the bevel gear 361 'is inactive, and only the transmission gear 362' is an active gear, i.e. when synchronously adjusting the steering wheel, the transmission gear 362 'transmits power, so that the bevel gear 361' can be omitted. The dual gears 36' of the adjusting

mechanisms

3a and 3b on both sides in this embodiment have the same structure, and mainly consider that the complexity of parts can be reduced or the number of dies can be reduced, thereby saving the cost.

The above embodiments are merely preferred embodiments of the present invention, which are not intended to limit the scope of the present invention, and various changes may be made in the above embodiments of the present invention. All simple and equivalent changes and modifications made according to the claims and the content of the specification of the present application fall within the scope of the claims of the present patent application. The invention has not been described in detail in order to avoid obscuring the invention.

Claims

1. The utility model provides a folding steering wheel, its characterized in that, this folding steering wheel includes steering wheel and adjustment mechanism, adjustment mechanism's output shaft links firmly together with the steering wheel in order to drive the synchronous rotation of steering wheel, adjustment mechanism includes the motor, the worm, the duplicate gear, output gear and two-way clutch, wherein, the drive of motor to output gear is realized through meshed worm and duplicate gear, output gear has at least a pair of pusher dog subassembly that the axial is stretched out, two-way clutch includes the braking piece, pincers finished piece and at least a pair of roller assembly, pincers finished piece is connected with the steering wheel and rotationally installs in the middle part of braking piece through roller assembly, pusher dog subassembly and roller assembly cooperate with the clutch state of control two-way clutch.

2. The folding steering wheel of claim 1, wherein the bi-directional clutch is self-locking when the motor is not operating, and the steering wheel remains in a stable rest position.

3. The folding steering wheel of claim 1, wherein the pawl assembly is configured to control the bi-directional clutch to unlock and disengage to rotate the steering wheel when the motor is operated.

4. The folding steering wheel of claim 1, wherein the dual gear has a helical gear and a drive gear fixedly connected along its rotational axis, the helical gear being in meshing drive with the worm, the drive gear being in meshing drive with the output gear.

5. The folding steering wheel of claim 1, wherein the caliper has at least two circumferentially spaced radial bosses and at least one wedge surface between the bosses, and wherein the finger assembly includes two fingers distributed on opposite sides of a roller assembly, the roller assembly being comprised of two rollers and the elastomer, the two rollers being disposed between the inner annular surface of the brake and the wedge surface of the caliper with the elastomer therebetween.

6. The folding steering wheel of claim 5, wherein the number of roller assemblies is equal to the number of wedge surfaces.

7. The folding steering wheel of claim 5, wherein in the initial locked condition, the elastomer is always under compression and pushes the rollers into direct contact with the inner annular surface and the wedge surface.

8. The folding steering wheel of claim 7, wherein in the initial locked condition, a clearance between the finger and an adjacent boss is greater than a clearance between the finger and an adjacent roller.

9. The folding steering wheel of claim 8, wherein when the finger contacts an adjacent roller, there is a gap between the other finger and the adjacent boss, and further pushing of the adjacent roller by the finger causes compression of the elastomer such that the roller leaves the wedge surface forming an annular gap to unlock the clamping element.

10. The folding steering wheel of claim 9, wherein the output gear drives the clamping member to switch the steering wheel between the deployed position and the folded position when the other finger contacts the adjacent boss.

11. The folding steering wheel of claim 1, further comprising a mounting plate, the steering wheel being rotatably mounted on the mounting plate.

12. The folding steering wheel of claim 11, further comprising a fastener, wherein the adjustment mechanism is mounted to the mounting plate via the fastener.

13. The folding steering wheel of claim 12, wherein the adjustment mechanism includes a motor end cap, a gear box end cap, and a gear box, wherein the motor end cap and the gear box end cap are fixedly attached to opposite sides of the gear box, and wherein the gear box is fixedly attached to the mounting plate via the fastener.

14. The foldable steering wheel according to claim 13, wherein the fastening member comprises a press-riveting bolt and a nut engaged with the press-riveting bolt, the press-riveting bolt is in clearance fit with the mounting hole of the gear box, the press-riveting bolt is in interference press fit with the mounting hole of the braking member, and the press-riveting bolt is used as a mounting interface and is fixedly mounted on the mounting plate through the nut.

15. The folding steering wheel of claim 13, wherein the motor, worm and duplicate gear are mounted between a motor end cap and the gear box, and the output gear is mounted between a gear box end cap and the gear box.

16. A folding steering wheel according to claim 13 wherein the double gear has a rear end shaft and a front end shaft at opposite ends of its axis of rotation, the rear end shaft engaging the central bore of the motor end cap with clearance so as not to interfere with rotation within the central bore, the front end shaft engaging the restraining bore of the gear box end cap with clearance so as not to interfere with rotation within the restraining bore.

17. The folding steering wheel of claim 13, wherein the finger assembly is in spaced engagement with and extends from the central bore of the gear case end cap.

18. The folding steering wheel of claim 13, wherein the clamping member has an axially extending clamping shaft that is inserted with clearance into the central bore of the gear housing so as not to impede rotation of the clamping member about its axis.

19. The folding steering wheel of claim 18, wherein the central aperture of the output gear is in clearance fit with the clamping shaft so as not to impede rotation of the output gear thereabout.

20. The folding steering wheel of claim 1, further comprising a weight disposed opposite the adjustment mechanism to ensure that the total weight of the two sides of the folding steering wheel is equal, the center of gravity being located on the axis of symmetry thereof.

21. The folding steering wheel of claim 1, further comprising another adjustment mechanism disposed opposite the adjustment mechanism and synchronously coupled to the adjustment mechanism via a linkage, the other adjustment mechanism being devoid of a motor and a worm relative to the adjustment mechanism.

22. The folding steering wheel of claim 21, wherein the duplicate gears of the adjustment mechanism and the other adjustment mechanism each have a link interface into which a link is inserted.

23. A folding steering wheel according to claim 21 wherein the helical gear of the dual gear of the further adjustment mechanism is a non-active gear and the drive gear is an active gear.