CN211844766U - Indicate to dial and change subassembly and electric motor car - Google Patents

Abstract

The utility model provides a indicate to dial and change subassembly and electric motor car indicates to dial and changes the subassembly and be used for locking on the handlebar, including casing, base, adapter sleeve and fastener. The casing has the first chamber that holds, and the base joint is in the first intracavity that holds, and the casing can rotate for the base. The base is provided with a second containing cavity, and a limiting area and a convex body are formed in the second containing cavity. The fastening cover is arranged in and is held the intracavity, including lantern ring, first boss and second boss, the lantern ring has the third that is used for wearing to establish the handlebar and holds the chamber, and the third holds the chamber and forms jaggedly, and first boss and second boss set up respectively on the lantern ring of breach both sides, and first boss supports and leans on between the lateral wall and the convex body in spacing district. The fastener connects the first boss and the second boss to lock the fingergrip assembly to the handlebar. The application provides a indicate to dial and change subassembly because first boss can support and lean on between the lateral wall and the convex body in spacing district to provide certain spacing between base and the adapter sleeve, prevent that the two from taking place the shake.

Description

Indicate to dial and change subassembly and electric motor car

Technical Field

The application relates to the field of electric vehicles, in particular to a finger-poking rotating handle assembly and an electric vehicle.

Background

In electric vehicles, such as electric scooters, the vehicle is typically regulated in speed by rotating a thumb turn assembly. The finger-poking rotating handle assembly is arranged on the handlebar, and can shake and even make abnormal sound under the condition of long-term use.

SUMMERY OF THE UTILITY MODEL

In view of this, the present application provides a dip handle assembly and an electric vehicle, so as to solve the problem of shaking of the dip handle assembly.

To achieve the above object, an aspect of the embodiments of the present application provides a dial assembly for locking on a handlebar, the dial assembly comprising: a housing having a first receiving cavity; the base is clamped in the first accommodating cavity, the shell can rotate relative to the base, the base is provided with a second accommodating cavity, a limiting area and a convex body are formed in the second accommodating cavity, and the convex body is arranged in the limiting area; the fastening sleeve is arranged in the second accommodating cavity and comprises a sleeve ring, a first boss and a second boss, the sleeve ring is provided with a third accommodating cavity for a handlebar to penetrate through, a notch is formed in the third accommodating cavity, the first boss and the second boss are respectively arranged on the sleeve ring on two sides of the notch, the first boss and the second boss are located in the limiting area, and the first boss is abutted between the side wall of the limiting area and the convex body; and a fastener connecting the first boss and the second boss to lock the fingering twist grip assembly to the handlebar.

Furthermore, a first connecting hole is formed in the side wall of the limiting area, a second connecting hole is formed in the first boss, a third connecting hole is formed in the second boss, and the fastening piece is locked on the handlebar through the first connecting hole, the second connecting hole and the third connecting hole.

Further, the fastener is a screw, the first connecting hole is a counter bore, and the third connecting hole is a threaded hole.

Further, the base comprises a base body and a plurality of convex blocks, a first flange is formed at one end of the base body, a plurality of convex blocks are arranged at the other end of the base body at intervals, a second flange is formed at one end, far away from the base body, of each convex block, and the shell is clamped between the first flange and the second flange.

Furthermore, an annular groove is formed in the shell, and the second flange is clamped in the groove.

Furthermore, the convex body is a rib protruding out of the inner surface corresponding to the limiting area, and the rib comprises a part arranged on the side wall of the limiting area and a part arranged on the bottom wall of the limiting area.

Further, the dial rotating handle assembly comprises an end cover, and the end cover is installed at one end, far away from the base, of the shell.

Further, the end cover includes the lid and is formed at the jack catch and the buckle of the same end of lid, the height of buckle is less than the height of jack catch, the jack catch with the buckle joint is in on the casing.

Further, the number of the clamping jaws is multiple; the number of the buckles is one, and openings are formed in the cover body on two sides of the buckles.

Further, the dip handle assembly includes a sensing device configured to acquire rotational angle information of the housing.

Further, the sensing device includes: the magnetic steel is fixedly connected to one of the shell and the base; and the Hall sensor is fixedly connected to the other one of the shell and the base and is configured to acquire the angular displacement of the magnetic steel.

Further, the convex body is arranged between the center of the limiting area and the side wall of the limiting area.

The application provides a dial and change subassembly supports between the lateral wall and the convex body of spacing district on the base through the first boss with on the adapter sleeve, and first boss and second boss are connected to the fastener for along the circumference chucking between adapter sleeve and the base, prevent that the two from taking place to rock, thereby solved and dial and change the problem that the subassembly rocked.

Another aspect of the embodiments of the present application provides an electric vehicle, which includes a handlebar and the above-mentioned twist-grip assembly, wherein the twist-grip assembly is locked on the handlebar. The electric motor car that this application provided owing to adopted above-mentioned finger to dial the commentaries on classics handle subassembly, therefore has the same beneficial effect, does not give unnecessary details here.

Drawings

FIG. 1 is an exploded view of a thumb turn assembly according to one embodiment of the present application;

FIG. 2 is an assembly view from a perspective of a thumb turn assembly provided in accordance with an embodiment of the present application;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a schematic structural diagram of a base according to an embodiment of the present application;

FIG. 5 is a front view of a base from a perspective provided by an embodiment of the present application;

FIG. 6 is a partial enlarged view of FIG. 5 at B;

FIG. 7 is a schematic structural view of a fastener sleeve according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural view of an end cap according to an embodiment of the present application;

FIG. 9 is a schematic view of FIG. 8 from another perspective; and

fig. 10 is a schematic structural diagram of a housing according to an embodiment of the present application.

Description of the reference numerals

1. A housing; 11. a first accommodating chamber; 12. a groove; 13. a finger-lift; 14. mounting grooves; 2. a base; 21. a second accommodating chamber; 22. a limiting region; 22a, a side wall of the limiting area; 221. a first connection hole; 23. a convex body; 23', ribs; 24. a bump; 241. a second flange; 25. a base body; 251. a first flange; 26. an installation table; 261. mounting holes; 3. fastening sleeves; 31. a first boss; 311. a second connection hole; 32. a second boss; 321. a third connection hole; 33. a notch; 34. a collar; 35. a third accommodating chamber; 4. a fastener; 5. a torsion spring; 6. an end cap; 61. a cover body; 62. a claw; 621. a third flange; 63. buckling; 631. a fourth flange; 64. an opening; 7. an induction device; 71. a Hall sensor; 72. and (5) magnetic steel.

Detailed Description

It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.

The directional terms used in the description of the present application are used for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

Referring to fig. 1 to 7, the finger-grip assembly includes a housing 1, a base 2, a fastening sleeve 3, and a fastening member 4. Casing 1 has the first chamber 11 that holds, and base 2 joint is in the first chamber 11 that holds, and casing 1 can rotate for base 2. The base 2 is provided with a second accommodating cavity 21, a limiting area 22 and a convex body 23 are formed in the second accommodating cavity 21, the convex body 23 is arranged in the limiting area 22, and the fastening sleeve 3 is arranged in the second accommodating cavity 21. The adapter sleeve 3 includes lantern ring 34, first boss 31 and second boss 32, and lantern ring 34 has the third that is used for wearing to establish the handlebar and holds chamber 35, the third holds chamber 35 and is formed with breach 33, and first boss 31 and second boss 32 set up respectively on the lantern ring 34 of breach 33 both sides, and first boss 31 supports and leans on between lateral wall 22a and the convex body 23 at spacing district. Fastener 4 connects first boss 31 and second boss 32 to lock the thumbturn assembly to the handlebar.

In an embodiment, please refer to fig. 1, taking the application of the thumb turn handle assembly provided in the present application to an electric vehicle as an example, the thumb turn handle assembly is installed on a handlebar of the electric vehicle through the third accommodating cavity 35, the fastening sleeve 3 and the base 2 are locked together on the handlebar through the fastening member 4, the base 2 is clamped in the first accommodating cavity 11 of the housing 1, and the housing 1 can rotate relative to the base 2. The housing 1 is formed with a dial 13, and the housing 1 can be rotated relative to the base 2 by dialing the dial 13. Preferably, the surface of the dial 13 is provided with a round or stripe pattern to prevent slipping. It can be understood that the rotation of the housing 1 is used as a speed change signal to be transmitted to the speed change device of the electric vehicle, and the acceleration or deceleration of the electric vehicle and the magnitude of the acceleration or deceleration are controlled according to the rotation direction and the rotation angle of the housing 1.

Among the prior art, the second of base 2 holds and does not set up convex body 23 in the chamber 21, there is the clearance between base 2 and the first boss 31 and the second boss 32 of adapter sleeve 3, first boss 31 and second boss 32 do not have spacingly in circumference, and under long-term the use, base 2 and the two fatigue wear of lantern ring 34, vibrations and fastener 4's not hard up, easily lead to taking place to become flexible between base 2 and the lantern ring 34, cause the clearance to appear between the two, thereby lead to pointing to dial and change the subassembly and take place to rock, send the abnormal sound even.

Therefore, referring to fig. 2 to 4, the convex body 23 is arranged in the limiting region 22 of the second accommodating cavity 21 of the base 2, when the fastening sleeve is installed, the first boss 31 at one end of the fastening sleeve 3 abuts against between the side wall 22a of the limiting region and the convex body 23, then the fastening member 4 penetrates through the side wall 22a of the limiting region to connect the first boss 31 and the second boss 32 of the fastening sleeve 3, so as to provide circumferential limitation for the fastening sleeve 3 and the base 2, and the fastening member 4 locks the fastening sleeve 3 and the base 2 in the radial direction, so that the fastening sleeve 3 can be effectively prevented from shaking in the base 2. The finger that this application embodiment provided is changeed the subassembly, sets up convex body 23 through spacing district 22 at base 2 to support first boss 31 on the adapter sleeve 3 between lateral wall 22a and the convex body 23 at spacing district, thereby it is spacing to provide circumference to base 2 and adapter sleeve 3, prevent that the two from taking place along the relative motion of circumference. The radial component of the locking force of the fastening piece 4 to the fastening piece and the fastening sleeve can effectively prevent the base 2 and the fastening sleeve 3 from shaking, so that the problem that the finger-poking rotating handle assembly shakes is solved.

Specifically, during tightening of the fastener 4, the first boss 31 is clamped by the side wall 22a of the stopper region and the convex body 23. During continued tightening of the fastener 4, the second boss 32 approaches the first boss 31. It should be noted that the distance between the second boss 32 and the convex body 23 is related to the size of the handlebar, the distance between the second boss 32 and the convex body 23 can be adapted to different handlebar sizes, and if the handlebar size is larger, the second boss 32 and the convex body 23 have a larger clearance after the fastener locks the first boss and the second boss 32. If the handlebar size is small, there is a small gap between the second boss 32 and the boss 23 after the fastener 4 locks the first boss 31 and the second boss 32. When the second boss 32 abuts on the boss 23, that is, when the boss 23 is clamped by the first boss 31 and the second boss 32, the area defined by the third receiving cavity 35 of the collar 34 corresponds to the minimum size of the handlebar.

Wherein, the convex body 23 is arranged between the side wall 22a of the spacing region and the center of the spacing region 22, so that the distance between the convex body 23 and the side wall 22a of the spacing region is smaller than the distance between the convex body 23 and the other side wall (opposite to the side wall 22a) of the spacing region.

In one example as shown in fig. 4, the protrusions 23 are ribs 23' protruding from the corresponding inner surface of the stopper region 22. Illustratively, the base 2 is integrally formed as a unitary structure, i.e., the ribs 23' are integrally formed with the rest of the base 2. In one embodiment, the rib 23 'is substantially L-shaped to form a good limiting effect on both the collar 34 and the first boss 31 of the fastening sleeve 3, and the rib 23' includes a portion disposed on the side wall of the limiting region 22 and a portion disposed on the bottom wall of the limiting region 22, and is substantially L-shaped as a whole.

In an embodiment, referring to fig. 1 to 4 and fig. 7, in the fingering twist grip assembly provided by the present application, a first connection hole 221 is formed on a side wall 22a of the limiting region, a second connection hole 311 is formed on the first boss 31, a third connection hole 321 is formed on the second boss 32, and the fastening member 4 passes through the first connection hole 221, the second connection hole 311 and the third connection hole 321 to lock the fastening sleeve 3 and the base 2 on the handlebar. Through setting up first connecting hole 221, second connecting hole 311 and third connecting hole 321, can make and indicate to dial to change being connected of handle subassembly and handlebar more reliably, convenient, and can improve fastener 4 effectively and to the locking force of base 2 and adapter sleeve 3, further prevent to indicate to dial to change the subassembly and rock on the handlebar. In particular, the connection between the fastener 4 and the base 2 and the fastening sleeve 3 may be a rivet, a pin, a screw, or the like.

In one embodiment, referring to fig. 2 and 3, the fastening member 4 of the fingering twist grip assembly provided by the present application is a screw, the first connecting hole 221 is a countersunk hole, and the third connecting hole 321 is a threaded hole. Through threaded connection with base 2 and adapter sleeve 3 locking on the handlebar, not only be convenient for indicate to dial the installation and the dismantlement of changeing the handle subassembly, still be favorable to preventing to become flexible between base 2 and the fastener 3. Furthermore, through adjusting the pretightening force of threaded connection, the locking force between the finger shifting rotating handle assembly and the handlebar becomes adjustable, and the finger shifting rotating handle assembly and the handlebar are prevented from being too loose or too tight in locking mode.

It can be understood that the first connecting hole 221 is provided as a countersunk hole, the screw head is arranged in the countersunk hole, and the step surface of the head of the screw abuts against the step surface of the countersunk hole, so that the disturbance influence of the fastening piece 4 on the first boss 31 in the installation or use process is reduced, the threaded connection is prevented from loosening, and the situation that the riding personnel are scratched due to the protrusion of the screw head can be avoided. Moreover, the countersunk holes are arranged, so that the contact area between the screw head and the base 2 is increased, the maximum pretightening force of threaded connection is improved, and the threaded connection can be effectively prevented from loosening.

In an embodiment, referring to fig. 1 and fig. 5 to 6, the base 2 of the fingering twist grip assembly provided by the present application includes a seat 25 and a plurality of bumps 24. A first flange 251 is formed at one end of the seat body 25, a plurality of bumps 24 are arranged at intervals at the other end of the seat body 25, a second flange 241 is formed at one end of the bump 24 far away from the seat body 25, and the shell 1 is clamped between the first flange 251 and the second flange 241. Specifically, the bump 24 is an arc-shaped thin-walled structure, so that the bumps 24 arranged at intervals have certain elasticity, and the second flange 241 is formed in the circumferential direction of the end of the bump 24. One end of the base 2, which is formed with the protrusion 24, is clamped in a protrusion (not shown) or a groove 12 in the housing 1 through the second flange 241, and the first flange 251 at the other end of the base 2 is clamped in an end of the housing 1, so that the base 2 and the housing 1 are axially limited by the first flange 251 and the second flange 241 to prevent axial displacement of the two.

Preferably, in an embodiment, referring to fig. 1, in the fingering twist grip assembly provided by the present application, an annular groove 12 is formed in the housing 1, and the second flange 241 is clamped in the groove 12. Through setting up recess 12, with second flange 241 joint in recess 12, its simple structure, simple to operate is swift.

In one embodiment, referring to fig. 1, the fingering rotating handle assembly provided by the present application includes a torsion spring 5, one end of the torsion spring 5 is connected to the housing 1, and the other end of the torsion spring 5 is connected to the base 2. On one hand, after the shell 1 rotates relative to the base 2, the torsion spring 5 can provide a return force for the shell 1; on the other hand, the deformation amount of the torsion spring 5 reflects the direction and the size of the corner of the housing 1, and the deformation amount of the torsion spring 5 is in positive correlation with the elastic force of the torsion spring 5, so that the direction and the size of the corner of the housing 1 can be calculated by measuring the elastic force of the torsion spring 5, and then the acceleration or deceleration signal and the acceleration or deceleration size of the electric vehicle sent by the riding personnel can be acquired.

In an embodiment, please refer to fig. 1 and 8 to 9, the finger-dialing rotating handle assembly provided by the present application includes an end cover 6, the end cover 6 is installed at one end of the housing 1 far away from the base 2, so that a certain sealing effect can be generated on the housing 1, a certain protection effect is provided for the components such as the base 2 in the housing 1, and sand, rain water and the like are prevented from entering the housing 1 to corrode the components such as the base 2, and the end cover 6 can also provide a certain axial limiting effect for the components such as the base 2 in the housing 1. Specifically, the end cap 6 may be mounted on the housing 1 by screws, pins, rivets, or the like.

Preferably, in an embodiment, referring to fig. 1 and 8 to 9, in the finger-dial twist grip assembly provided by the present application, the end cap 6 includes a cover body 61, and a claw 62 and a catch 63 formed at the same end as the cover body 61, the catch 63 has a height smaller than that of the claw 62, and the claw 62 and the catch 63 are caught on the housing. Specifically, the latch 62 is of an arc-shaped thin-walled structure and thus has certain elasticity, a third flange 621 protruding outwards is formed at the end of the latch 62, and the end cap 6 is clamped in the housing 1 through the third flange 621. The buckle 63 is a short thin-wall structure, and a fourth flange 631 protruding inwards is formed at the end of the buckle 63, and the end cover 6 can be taken out by pulling the fourth flange 631. Therefore, the end cover can be conveniently and quickly mounted and dismounted by arranging the claws 62 and the buckles 63, and the later maintenance and service work is convenient.

Preferably, the number of the claws 62 is multiple, for example, two, the number of the catches 63 is one, and multiple claws 62 and one catch 63 are clamped on the housing 1 at intervals, so that the reliability of the connection between the end cover 6 and the housing 1 can be further improved.

In an embodiment, referring to fig. 8, in the finger-dial rotating handle assembly provided in the embodiment of the present application, the cover 61 is formed with openings 64 at two sides of the buckle 63. By providing the opening 64, the catch 63 can be made more resilient, which facilitates the pulling of the catch 63 to remove the end cap 6.

In one embodiment, referring to fig. 1, the thumbturn assembly provided by the present application includes a sensing device 7, and the sensing device 7 is configured to obtain information about a rotation angle of the housing 1. Specifically, after the housing 1 rotates relative to the base 2, the sensing device 7 can rapidly acquire the magnitude and direction of the rotation angle of the housing 1 as acceleration or deceleration and information of the magnitude of the acceleration or deceleration, and provide the information to the speed changing device, so that the electric vehicle can make corresponding acceleration or deceleration reaction.

In an embodiment, please refer to fig. 1, in the finger-dialing twist grip assembly provided by the present application, the sensing device 7 includes a magnetic steel 72 and a hall sensor 71, the magnetic steel 72 is fixedly connected to one of the housing 1 and the base 2, the hall sensor 71 is fixedly connected to the other one of the housing 1 and the base 2, and the hall sensor 71 is configured to acquire an angular displacement of the magnetic steel 72. Specifically, when the housing 1 rotates relative to the base 2, the magnetic steel 72 generates an angular displacement relative to the hall sensor 71, and the hall sensor 71 receives an angular displacement signal of the magnetic steel 72 and transmits the signal to the transmission of the electric vehicle. The Hall sensor 71 and the magnetic steel 72 sense the rotation angle more sensitively, and the transmission of speed signals is quicker, so that the speed of the electric vehicle is controlled more timely and accurately.

Preferably, referring to fig. 1, according to the structural features of the magnetic steel 72 and the hall sensor 71, referring to fig. 10, an installation groove 14 is formed in the first accommodating cavity 11 of the housing 1, and the magnetic steel 72 is installed in the installation groove 14. The mounting table 26 is arranged in the second accommodating cavity 21 of the base 2, a mounting hole 261 is formed in the mounting table 26, and the hall sensor 71 is fixedly connected with the base 2 through the mounting hole 261. Therefore, the structure of the finger-poking rotating handle assembly is more compact and light.

Another aspect of the embodiments of the present application provides an electric vehicle, which includes a handlebar and any one of the above-mentioned finger grip assemblies, wherein the finger grip assembly is locked on the handlebar. The electric motor car that this application provided has the same technological effect owing to adopted above-mentioned finger to dial the commentaries on classics handle subassembly, no longer gives unnecessary details here.

In an embodiment, taking an application of the dialing rotating handle assembly to an electric scooter as an example, the dialing rotating handle assembly provided by the present application includes a magnetic steel 72 and a hall sensor 71, the electric scooter provided by the present application includes a speed changing device (not shown), and the hall sensor 71 is electrically connected to the speed changing device. Therefore, the timeliness and the accuracy of signal transmission are further improved.

The various embodiments/implementations provided herein may be combined with each other without contradiction.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (13)

1. A thumb turn assembly comprising:

a housing (1) having a first accommodation chamber (11);

the base (2) is clamped in the first accommodating cavity (11), the shell (1) can rotate relative to the base (2), the base (2) is provided with a second accommodating cavity (21), a limiting area (22) and a convex body (23) are formed in the second accommodating cavity (21), and the convex body (23) is arranged in the limiting area (22);

the fastening sleeve (3) is arranged in the second accommodating cavity (21), the fastening sleeve (3) comprises a sleeve ring (34), a first boss (31) and a second boss (32), the sleeve ring (34) is provided with a third accommodating cavity (35) used for penetrating through a handlebar, a notch (33) is formed in the third accommodating cavity (35), the first boss (31) and the second boss (32) are respectively arranged on the sleeve ring (34) on two sides of the notch (33), the first boss (31) and the second boss (32) are located in the limiting area (22), and the first boss (31) abuts against between the side wall (22a) of the limiting area and the convex body (23); and

a fastener (4) connecting the first boss (31) and the second boss (32) to lock the thumb turn lever assembly to the handlebar.

2. A thumb turn handle assembly according to claim 1, wherein a first coupling hole (221) is formed in a side wall (22a) of the restraining region, a second coupling hole (311) is formed in the first boss (31), a third coupling hole (321) is formed in the second boss (32), and the fastening member (4) passes through the first coupling hole (221), the second coupling hole (311) and the third coupling hole (321) to lock the fastening sleeve (3) and the base (2) to the handlebar.

3. A thumb turn assembly according to claim 2, wherein the fastener (4) is a screw, the first connection hole (221) is a countersunk hole and the third connection hole (321) is a threaded hole.

4. The assembly of claim 1, wherein the base (2) comprises a base body (25) and a plurality of projections (24), a first flange (251) is formed at one end of the base body (25), the plurality of projections (24) are spaced apart from one end of the base body (25), a second flange (241) is formed at one end of the projections (24) far away from the base body (25), and the housing (1) is clamped between the first flange (251) and the second flange (241).

5. A thumb turn assembly according to claim 4, wherein an annular recess (12) is formed in the housing (1) and the second flange (241) is snap-fitted into the recess (12).

6. A thumb turn handle assembly according to claim 1, wherein the protrusion (23) is a rib (23 ') protruding from the corresponding inner surface of the restraining region (22), and the rib (23') comprises a portion disposed on the side wall of the restraining region (22) and a portion disposed on the bottom wall of the restraining region (22).

7. A thumb turn assembly according to claim 1, including an end cap (6), the end cap (6) being mounted on the housing (1) at an end remote from the base (2).

8. A thumb turn handle assembly according to claim 7, wherein the end cap (6) comprises a cap body (61) and a catch (62) and a catch (63) formed at the same end of the cap body (61), the catch (63) having a height less than the height of the catch (62), the catch (62) and the catch (63) being snap-fitted to the housing (1).

9. The thumb turn assembly of claim 8, wherein the number of the jaws (62) is plural, the number of the catches (63) is one, and the cover (61) is formed with openings (64) at both sides of the catches (63).

10. The assembly according to any of claims 1 to 9, wherein the assembly comprises a sensing device (7), the sensing device (7) being configured to obtain information on the rotation angle of the housing (1).

11. A thumb turn assembly according to claim 10, wherein the sensing means (7) comprises:

the magnetic steel (72) is fixedly connected to one of the shell (1) and the base (2);

the Hall sensor (71) is fixedly connected to the other one of the shell (1) and the base (2), and the Hall sensor (71) is configured to acquire the angular displacement of the magnetic steel (72).

12. A thumb turn assembly according to claim 1, wherein the protrusion (23) is disposed at the center of the restraint region (22) between the side walls (22a) of the restraint region.

13. An electric vehicle comprising a handlebar and the thumb lever assembly of any one of claims 1 to 12, the thumb lever assembly being locked to the handlebar.

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