Steering limiting device and scooter

Abstract

The invention relates to the technical field of riding instead of walk, in particular to a steering limiting device and a scooter, the steering limiting device comprises a first pipe fitting, a second pipe fitting and a limiting assembly, and the peripheral surface of the first pipe fitting is provided with a limiting groove penetrating through the wall thickness of the first pipe fitting; the limiting groove comprises a first groove part extending in the circumferential direction of the first pipe fitting and a second groove part extending in the axial direction of the first pipe fitting from one end, in the circumferential direction of the first pipe fitting, of the first groove part, the second pipe fitting is arranged on the first pipe fitting in a sleeving mode, and the first pipe fitting can rotate relative to the second pipe fitting; the limiting assembly comprises a limiting piece and an adjusting piece which are arranged on the second pipe fitting, one end of the limiting piece is arranged in the first groove part in a matched mode and can move in the first groove part in the circumferential direction of the first pipe fitting, and one end of the adjusting piece is arranged in the limiting groove in a matched mode and can move between the first groove part and the second groove part so as to adjust the moving range of the limiting piece in the first groove part. According to the steering limiting device, the rotating angle of the front wheel can be adjusted, and the storage length of the scooter is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of mobility devices, and in particular to a steering limit device and a mobility device. Background Art

[0002] As a convenient and environmentally friendly means of transportation, scooters are attracting more and more attention. Scooters turn the front wheels by turning the handlebars, so as to achieve steering. However, if the steering angle of the handlebars is too large, the scooter is prone to tilt, affecting the safety of the user. For this reason, the relevant technology proposes a steering limit device for limiting the steering angle of the scooter, so as to limit the rotation angle of the front wheels, avoid excessive steering angles, and improve safety.

[0003] However, when the mobility scooter is stored, the storage length of the mobility scooter increases due to the limited rotation angle range of the front wheels, which is not conducive to storage and transportation. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the present invention provides a steering limiter device that can adjust the rotation angle of the front wheel and reduce the storage length of the scooter.

[0005] The embodiment of the present invention further provides a mobility scooter.

[0006] The steering limit device of the embodiment of the present invention includes: a first pipe fitting, wherein the outer circumferential surface of the first pipe fitting is provided with a limit groove penetrating the wall thickness of the first pipe fitting, the limit groove includes a first groove portion and a second groove portion, the first groove portion extends along the circumferential direction of the first pipe fitting, and the second groove portion extends from one end of the first groove portion in the circumferential direction of the first pipe fitting along the axial direction of the first pipe fitting; a second pipe fitting, the second pipe fitting is sleeved on the outer circumference of the first pipe fitting, and the first pipe fitting is rotatable relative to the second pipe fitting; a limit assembly, the limit assembly includes a limit member and an adjusting member, the limit member is provided on the second pipe fitting, one end of the limit member is engaged in the first groove portion and can be moved in the first groove portion along the circumferential direction of the first pipe fitting, one end of the adjusting member is engaged in the limit groove, and the adjusting member is movable between the first groove portion and the second groove portion, so as to adjust the moving range of the limit member in the first groove portion.

[0007] The steering limit device of the embodiment of the present invention is characterized in that a limit groove is provided on the first pipe fitting, a limit piece is arranged on the second pipe fitting and is fitted in the first groove portion, the first groove portion extends along the circumferential direction of the first pipe fitting, when the first pipe fitting rotates relative to the second pipe fitting, the limit piece can limit the rotation angle of the first pipe fitting, and the movement range of the limit piece in the first groove portion is adjusted by moving the adjusting piece between the first groove portion and the second groove portion. When the adjusting piece is located in the first groove portion, it occupies part of the space in the first groove portion, and the movement range of the limit piece in the first groove portion is limited. When the adjusting piece moves to the second groove portion, the movement range of the limit piece in the first groove portion becomes larger, thereby increasing the rotation angle of the first pipe fitting relative to the second pipe fitting, thereby increasing the rotation angle of the component connected to the first pipe fitting in the equipment having the steering limit device, reducing the storage length of the component, and facilitating the storage and transportation of the equipment.

[0008] In some embodiments, the limiting assembly also includes a transmission shaft, which is installed in the first tube and connected to the adjusting member. The transmission shaft is movable in the axial direction of the first tube relative to the first tube to drive the adjusting member to move along the axial direction of the first tube.

[0009] In some embodiments, the limiting assembly further includes a connecting piece, the connecting piece is located in the first tube, the connecting piece is sleeved on the outer circumference of the transmission shaft and connected to the transmission shaft, and the other end of the adjusting piece is connected to the connecting piece.

[0010] In some embodiments, the limiting assembly also includes a first fixing member and a first elastic member, the first fixing member is disposed in the first tube and is spaced apart from the connecting member in the axial direction of the first tube, one end of the transmission shaft is movably connected to the first fixing member, and the first elastic member is located in the first tube and abuts between the first fixing member and the connecting member.

[0011] In some embodiments, one end of the transmission shaft is flat, and the connecting member and the first fixing member are both provided with flat holes that cooperate with the flat to limit the circumferential rotation of the transmission shaft relative to the connecting member and the first fixing member.

[0012] In some embodiments, the limiting assembly also includes a first retaining spring, a first retaining groove is provided on the transmission shaft, the first retaining spring is retained in the first retaining groove, the first retaining spring is located at one end of the first fixing member away from the connecting member, and is used to limit the axial movement distance of the transmission shaft; and / or, the limiting assembly also includes a second fixing member, the second fixing member is provided in the first pipe member and is located on the side of the connecting member away from the first fixing member, and the other end of the transmission shaft is movably connected to the second fixing member.

[0013] In some embodiments, the steering limit device also includes a driving assembly, which includes a third tube and a movable pin. The third tube is detachably or foldably connected to one end of the first tube, and the movable pin is arranged in the third tube. The movable pin abuts against the transmission shaft to prompt the adjusting member to move from the second groove portion to the first groove portion.

[0014] In some embodiments, the drive assembly also includes a mounting seat and a second elastic member, at least a portion of the mounting seat is disposed in the third tube, the mounting seat has a mounting cavity, a portion of the movable pin is disposed in the mounting cavity and one end of the movable pin extends out of the mounting seat and abuts against the transmission shaft, the second elastic member is disposed in the mounting cavity and abuts between the movable pin and the wall of the mounting cavity, the elastic force of the second elastic member is greater than the elastic force of the first elastic member, and before the third tube is not connected to the first tube or folded, and when the adjusting member is located in the second groove and abuts against the limiting member in the axial direction of the first tube, the second elastic member can be compressed to avoid the installation space of the third tube and the first tube.

[0015] In some embodiments, the mounting seat includes a seat body and a cover body, at least a portion of the seat body is disposed within the third tube, the mounting cavity is disposed within the seat body and is open at one end, the cover body is disposed on the seat body and covers the opening of the mounting cavity, and the second elastic member abuts between the movable pin and the cover body.

[0016] In some embodiments, the steering limit device has a first state and a second state. In the first state, one end of the adjusting member is engaged in one end of the first groove portion, and the limit member is movable between the other end of the first groove portion and the adjusting member, so that the maximum angle of rotation of the first tube relative to the second tube is a first steering angle. In the second state, one end of the adjusting member is engaged in the second groove portion, and the limit member is movable between the other end of the first groove portion and one end of the first groove portion, so that the maximum angle of rotation of the first tube relative to the second tube is a second steering angle, and the second steering angle is greater than the first steering angle.

[0017] In some embodiments, the first steering angle is 35 degrees to 65 degrees, and the second steering angle is 90 degrees.

[0018] The mobility scooter according to the embodiment of the present invention comprises the steering limiting device according to the above embodiment.

[0019] The scooter of the embodiment of the present invention can change the movement range of the limiter in the first groove through the steering limit device, thereby increasing the turning angle of the front wheel and reducing the storage length of the scooter, making it easier to store and transport.

[0020] In some embodiments, the scooter further includes: a front fork assembly, the front fork assembly includes a vertical tube, and the first tube member of the steering limit device forms the vertical tube; a frame assembly, the frame assembly includes a head tube, and the second tube member of the steering limit device forms the head tube.

[0021] In some embodiments, the mobility scooter further comprises a handlebar assembly, wherein the handlebar assembly comprises a vertical rod, and the third tube member of the steering limiting device forms the vertical rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of a mobility scooter according to an embodiment of the present invention.

[0023] Figure 2 Schematic diagram of an exploded view of the mobility scooter according to an embodiment of the present invention.

[0024] Figure 3 Schematic diagram of a steering limit device according to an embodiment of the present invention.

[0025] Figure 4 Schematic diagram of a limit stop assembly according to an embodiment of the present invention.

[0026] Figure 5 is a schematic diagram of a drive assembly according to an embodiment of the present invention.

[0027] Figure 6 It is a schematic diagram of the adjusting member and the limiting member of the steering limiting device according to an embodiment of the present invention in the first state.

[0028] Figure 7 It is a schematic diagram of the adjusting member and the limiting member of the steering limiting device according to an embodiment of the present invention in the second state.

[0029] Reference numerals:

[0030] Front fork assembly 100, stem tube 110, frame assembly 200, head tube 210,

[0031] The handlebar assembly 300, the upright rod 310, the front wheel 400, the rear wheel 500,

[0032] first pipe member 1, limiting groove 11, first groove portion 111, second groove portion 112, second pipe member 2,

[0033] Limiting assembly 3, limiting member 31,

[0034] Adjusting member 32, transmission shaft 33, first slot 331,

[0035] Connecting member 34, first fixing member 35, first elastic member 36, first clip spring 37, second fixing member 38, second clip spring 39, third clip spring 310,

[0036] Driving assembly 4, third pipe 41, movable pin 42,

[0037] Mounting seat 43, mounting cavity 431, opening 4311, seat body 432, cover body 433, second elastic member 44,

[0038] First connecting screw 5, second connecting screw 6, bowl assembly 7, pipe clamp 8. DETAILED DESCRIPTION

[0039] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0040] The steering limit device of the embodiment of the present invention comprises a first pipe 1, a second pipe 2 and a limit assembly 3. The outer circumferential surface of the first pipe 1 is provided with a limit groove 11 penetrating the wall thickness of the first pipe 1, and the limit groove 11 comprises a first groove portion 111 and a second groove portion 112, the first groove portion 111 extends along the circumferential direction of the first pipe 1, and the second groove portion 112 extends from one end of the first groove portion 111 in the circumferential direction of the first pipe 1 along the axial direction of the first pipe 1. The second pipe 2 is sleeved on the outer circumference of the first pipe 1, and the first pipe 1 is rotatable relative to the second pipe 2. The limiting assembly 3 includes a limiting member 31 and an adjusting member 32. The limiting member 31 is arranged on the second pipe 2. One end of the limiting member 31 is engaged in the first groove 111 and can move circumferentially in the first groove 111 of the first pipe 1. One end of the adjusting member 32 is engaged in the limiting groove 11 and can move between the first groove 111 and the second groove 112, so as to adjust the moving range of the limiting member 31 in the first groove 111.

[0041] Specifically, Figure 1-Figure 4As shown, the first pipe 1 is connected to the front wheel 400 of the scooter, and the rotation of the first pipe 1 drives the front wheel 400 to rotate. The second pipe 2 is sleeved on the first pipe 1 and is rotatably connected to the first pipe 1, so that the first pipe 1 can rotate relative to the second pipe 2 around the axial direction of the first pipe 1 to achieve the steering of the first pipe 1, that is, when the first pipe 1 rotates, the second pipe 2 will not rotate synchronously with the first pipe 1. By arranging the limiter 31 on the second pipe 2, and fitting one end of the limiter 31 in the first groove 111, since the first groove 111 extends along the circumferential direction of the first pipe 1, when the first pipe 1 rotates, the limiter 31 is limited by the first groove 111 to limit the steering angle of the first pipe 1, thereby limiting the steering angle of the front wheel 400.

[0042] The second groove portion 112 and the first groove portion 111 are arranged sequentially in the axial direction of the first pipe fitting 1. The adjusting member 32 is located in the first pipe fitting 1 and is movable relative to the first pipe fitting 1 in the axial direction of the first pipe fitting 1. By fitting one end of the adjusting member 32 in the limiting groove 11, the adjusting member 32 is movable between the first groove portion 111 and the second groove portion 112. By adjusting the position of the adjusting member 32, the moving range of the limiting member 31 in the first groove portion 111 is adjusted, thereby adjusting the steering angle of the front wheel 400.

[0043] like Figure 6 As shown, when the adjusting member 32 is located in the first groove portion 111, since the second groove portion 112 extends from one end of the first groove portion 111 in the circumferential direction of the first pipe 1 along the axial direction of the first pipe 1, that is, the second groove portion 112 is connected to one end of the first groove portion 111 in the circumferential direction, the adjusting member 32 moves from the second groove portion 112 to the first groove portion 111, and the adjusting member 32 is located at one end of the first groove portion 111 in the circumferential direction. When the first pipe 1 rotates relative to the second pipe 2, since the adjusting member 32 occupies the space in the first groove portion 111, the circumferential movable distance of the limiting member 31 in the first groove portion 111 along the first groove portion 111 is shortened, thereby reducing the steering angle of the first pipe 1, avoiding excessive steering angle of the scooter, and improving the safety of the scooter.

[0044] like Figure 7 As shown, when the adjusting member 32 is located in the second groove portion 112, since the adjusting member 32 does not occupy the space in the first groove portion 111, when the first tube 1 rotates relative to the second tube 2, the circumferential movable distance of the limiting member 31 in the first groove portion 111 along the first groove portion 111 increases, and the steering angle range of the first tube 1 increases, thereby increasing the rotation angle of the front wheel 400 and reducing the storage length of the mobility scooter.

[0045] Optionally, the second pipe 2 is connected to the first pipe 1 through the bowl assembly 7. The stopper 31 is fixed on the second pipe 2, and one end of the stopper 31 passes through the second pipe 2 and fits in the first groove 111 of the first pipe 1. For example, the stopper 31 is a stop screw.

[0046] The first pipe 1 of the steering limit device of the embodiment of the present invention is provided with a limit groove 11, and the second pipe 2 is provided with a limit member 31 and is fitted in the first groove portion 111. The first groove portion 111 extends along the circumferential direction of the first pipe 1. When the first pipe 1 rotates relative to the second pipe 2, the limit member 31 can limit the rotation angle of the first pipe 1. The adjustment member 32 is moved between the first groove portion 111 and the second groove portion 112 to adjust the movement range of the limit member 31 in the first groove portion 111. When the adjustment member 32 is located in the first groove portion 111, it occupies part of the space in the first groove portion 111, and the movement range of the limit member 31 in the first groove portion 111 is limited. When the adjustment member 32 moves to the second groove portion 112, the movement range of the limit member 31 in the first groove portion 111 becomes larger, thereby increasing the rotation angle of the first pipe 1 relative to the second pipe 2, thereby increasing the rotation angle of the component connected to the first pipe 1 in the equipment having the steering limit device, reducing the storage length of the component, and facilitating the storage and transportation of the equipment.

[0047] In some embodiments, the limiting assembly 3 also includes a transmission shaft 33, which is installed in the first pipe fitting 1 and connected to the adjusting member 32. The transmission shaft 33 is movable in the axial direction of the first pipe fitting 1 relative to the first pipe fitting 1 to drive the adjusting member 32 to move along the axial direction of the first pipe fitting 1.

[0048] Specifically, Figure 2-Figure 4 As shown, the transmission shaft 33 extends along the axial direction of the first pipe 1. The transmission shaft 33 is installed in the first pipe 1 and is connected to the adjusting member 32, so that the adjusting member 32 can be moved between the first groove portion 111 and the second groove portion 112 by the axial movement of the transmission shaft 33 along the first pipe 1, thereby realizing the adjustment of the moving range of the limit member 31 in the first groove portion 111.

[0049] In some embodiments, the limiting assembly 3 further includes a connecting member 34 , which is located in the first pipe 1 , is sleeved on the outer periphery of the transmission shaft 33 and is connected to the transmission shaft 33 , and the other end of the adjusting member 32 is connected to the connecting member 34 .

[0050] Specifically, Figure 2-Figure 4As shown, the limiting assembly 3 further includes a second clamping spring 39 and a third clamping spring 310, the transmission shaft 33 is provided with a second clamping groove and a third clamping groove, the second clamping groove and the third clamping groove are arranged at intervals in the axial direction of the transmission shaft 33, the second clamping spring 39 is clamped in the second clamping groove, the third clamping spring 310 is clamped in the third clamping groove, the connecting member 34 is located between the second clamping spring 39 and the third clamping spring 310, and the connecting member 34 is fixed to the transmission shaft 33 by the second clamping spring 39 and the third clamping spring 310 to prevent the connecting member 34 from axially moving relative to the transmission shaft 33. One end of the adjusting member 32 is fitted in the limiting groove 11, and the other end of the adjusting member 32 is connected to the connecting member 34. The arrangement of the connecting member 34 facilitates the transmission connection between the adjusting member 32 and the transmission shaft 33.

[0051] Optionally, the adjusting member 32 and the connecting member 34 are detachably connected. Since one end of the adjusting member 32 is engaged with the limiting groove 11, the transmission shaft 33 can be easily installed in the first pipe 1 by setting the adjusting member 32 and the connecting member 34 as a detachable connection.

[0052] For example, the adjusting member 32 is connected to the connecting member 34 by means of a snap or screw connection.

[0053] For example, the connecting member 34 and the transmission shaft 33 are integrally formed, or the connecting member 34 is fixed to the transmission shaft 33 by screws.

[0054] In some embodiments, the limiting assembly 3 also includes a first fixing member 35 and a first elastic member 36. The first fixing member 35 is disposed in the first tube 1 and is spaced apart from the connecting member 34 in the axial direction of the first tube 1. One end of the transmission shaft 33 is movably connected to the first fixing member 35. The first elastic member 36 is located in the first tube 1 and abuts between the first fixing member 35 and the connecting member 34.

[0055] Specifically, Figure 2-Figure 4 As shown, the first fixing member 35 is located in the first pipe 1, and the first fixing member 35 is connected to the first pipe 1 to fix the first fixing member 35 in the first pipe 1. One end of the transmission shaft 33 is inserted into the first fixing member 35 and can move along the axial direction of the first pipe 1 relative to the first fixing member 35. The first elastic member 36 is sleeved on the transmission shaft 33, one end of the first elastic member 36 abuts against the first fixing member 35, and the other end of the first elastic member 36 abuts against the connecting member 34, and one end of the transmission shaft 33 is fixedly supported by the first fixing member 35 and the first elastic member 36.

[0056] Optionally, the first fixing member 35 is connected to the first pipe member 1 via a first connecting screw 5 .

[0057] For the convenience of description, the axial direction of the first pipe 1 is consistent with the up-down direction, and the connecting member 34 is located above the first fixing member 35. When the transmission shaft 33 is subjected to a downward force and moves downward, since the first fixing member 35 is fixed on the first pipe 1 and the connecting member 34 is fixedly installed on the transmission shaft 33, the transmission shaft 33 drives the connecting member 34 and the adjusting member 32 to move downward, the first elastic member 36 contracts, and the adjusting member 32 moves from the second groove 112 to the first groove 111. When the transmission shaft 33 is not subjected to a force, the connecting member 34 is pushed upward by the first elastic member 36, and the connecting member 34 drives the adjusting member 32 and the transmission shaft 33 to move upward, and the adjusting member 32 moves from the first groove 111 to the second groove 112.

[0058] In this embodiment, a first elastic member 36 is arranged between the first fixing member 35 and the connecting member 34, and the elastic force of the first elastic member 36 is used to ensure that when the transmission shaft 33 is not subjected to a downward force, the adjusting member 32 is always located in the second groove portion 112, thereby ensuring that the movable range of the limiting member 31 in the first groove portion 111 is increased.

[0059] In some embodiments, one end of the transmission shaft 33 is flat, and the connecting member 34 and the first fixing member 35 are both provided with flat holes that cooperate with the flat to limit the circumferential rotation of the transmission shaft 33 relative to the connecting member 34 and the first fixing member 35.

[0060] Specifically, Figure 2 As shown, the lower end of the transmission shaft 33 is set to a flat position. Since the first fixing member 35 is fixedly installed on the first pipe 1, a flat position hole is set on the first fixing member 35, and the lower end of the transmission shaft 33 passes through the flat position hole to prevent the transmission shaft 33 from rotating circumferentially relative to the first fixing member 35, ensuring that the transmission shaft 33 can only move along the axial direction of the first pipe 1.

[0061] In this embodiment, a flat hole is provided in the connecting member 34 to prevent the connecting member 34 from rotating circumferentially relative to the transmission shaft 33, thereby preventing the adjusting member 32 from rotating circumferentially in the limiting groove 11, thereby avoiding affecting the steering angle of the front wheel 400.

[0062] Optionally, the diameter of the upper end of the transmission shaft 33 is smaller than the diameter of the transmission shaft 33 , which is conducive to lightweighting of the transmission shaft 33 .

[0063] In some embodiments, the limiting assembly 3 also includes a first retaining spring 37. A first retaining groove 331 is provided on the transmission shaft 33. The first retaining spring 37 is retained in the first retaining groove 331. The first retaining spring 37 is located at one end of the first fixing member 35 away from the connecting member 34, and is used to limit the axial movement distance of the transmission shaft 33.

[0064] Specifically, Figure 2-Figure 4As shown, the first retaining spring 37 is located below the first fixing member 35, and the lower end of the transmission shaft 33 passes through the first fixing member 35 and is engaged with the first retaining spring 37. The transmission shaft 33 moves downward to drive the first retaining spring 37 to move downward synchronously, and the transmission shaft 33 moves upward to drive the first retaining spring 37 to move upward until the first retaining spring 37 abuts against the lower end of the first fixing member 35. The setting of the first retaining spring 37 can easily limit the upward movement distance of the transmission shaft 33 and prevent the transmission shaft 33 from detaching from the first pipe 1.

[0065] In some embodiments, the limiting assembly 3 further includes a second fixing member 38 , which is disposed in the first pipe 1 and located on a side of the connecting member 34 away from the first fixing member 35 , and the other end of the transmission shaft 33 is movably connected to the second fixing member 38 .

[0066] Specifically, Figure 2-Figure 4 As shown, the second fixing member 38 is located above the first fixing member 35, and the upper end of the transmission shaft 33 is passed through the second fixing member 38. The transmission shaft 33 can move axially along the first pipe 1 relative to the second fixing member 38. The second fixing member 38 is used to fix and support the upper end of the transmission shaft 33.

[0067] Optionally, the second fixing member 38 may be inserted into the first pipe member 1 by interference fit, or connected to the first pipe member 1 by snap fastening.

[0068] In some embodiments, the steering limit device also includes a driving assembly 4, which includes a third tube 41 and a movable pin 42. The third tube 41 is detachably or foldably connected to one end of the first tube 1, and the movable pin 42 is arranged in the third tube 41. The movable pin 42 abuts against the transmission shaft 33 to prompt the adjusting member 32 to move from the second groove portion 112 to the first groove portion 111.

[0069] Specifically, Figure 2 and Figure 5 As shown, the lower end of the third pipe 41 is detachably connected to the upper end of the first pipe 1, or the lower end of the third pipe 41 is foldably connected to the upper end of the first pipe 1. In this embodiment, the lower end of the third pipe 41 is sleeved on the upper end of the first pipe 1 and is detachably connected to the first pipe 1, the upper end of the movable pin 42 is arranged in the third pipe 41, and the lower end of the movable pin 42 extends out of the third pipe 41 and abuts against the upper end of the transmission shaft 33. When the third pipe 41 is connected to the first pipe 1, the third pipe 41 moves downward and sleeves on the first pipe 1, driving the movable pin 42 to move downward and exert a downward force on the transmission shaft 33.

[0070] If the transmission shaft 33 moves downward under the action of the movable pin 42, the first elastic member 36 contracts, and the transmission shaft 33 drives the adjusting member 32 to move downward from the second groove portion 112 to the first groove portion 111. The adjusting member 32 is located in the first groove portion 111, and the limiting member 31 is movable between the other end of the first groove portion 111 and the adjusting member 32, thereby reducing the movable range of the limiting member 31.

[0071] Optionally, the third pipe fitting 41 and the first pipe fitting 1 are detachably connected via a pipe clamp 8 .

[0072] In some embodiments, the drive assembly 4 also includes a mounting seat 43 and a second elastic member 44, at least a portion of the mounting seat 43 is disposed in the third tube 41, the mounting seat 43 has a mounting cavity 431, a portion of the movable pin 42 is disposed in the mounting cavity 431 and one end of the movable pin 42 extends out of the mounting seat 43 and abuts against the transmission shaft 33, the second elastic member 44 is disposed in the mounting cavity 431 and abuts between the movable pin 42 and the wall of the mounting cavity 431, the elastic force of the second elastic member 44 is greater than the elastic force of the first elastic member 36, and before the third tube 41 is connected to the first tube 1 or folded, and when the adjusting member 32 is located in the second groove 112 and abuts against the limiting member 31 in the axial direction of the first tube 1, the second elastic member 44 can be compressed to avoid the installation space of the third tube 41 and the first tube 1.

[0073] Specifically, Figure 2 and Figure 5 As shown, the upper end of the mounting seat 43 is located in the third pipe fitting 41, the lower end of the mounting seat 43 extends into the first pipe fitting 1 and is located in the second fixing member 38, the upper end of the movable pin 42 is located in the mounting cavity 431, the lower end of the movable pin 42 extends out of the mounting seat 43 and abuts against the upper end of the transmission shaft 33, the lower end of the second elastic member 44 abuts against the movable pin 42, and the upper end of the second elastic member 44 abuts against the wall of the mounting seat 43.

[0074] like Figure 7 As shown, when the third pipe fitting 41 is not connected to the first pipe fitting 1, the first elastic member 36 is extended, and the adjusting member 32 is located in the second groove portion 112. When the limiting member 31 is located at one end of the first groove portion 111, the upper end of the limiting member 31 abuts against the lower end of the adjusting member 32. At this time, when the third pipe fitting 41 moves downward and is sleeved on the first pipe fitting 1, the lower end of the movable pin 42 applies a downward force to the transmission shaft 33. Since the limiting member 31 abuts against the adjusting member 32, the transmission shaft 33 cannot move downward, and the first elastic member 36 cannot be compressed, so that the second elastic member 44 shrinks to avoid the installation space of the third pipe fitting 41 and the first pipe fitting 1, ensuring that the third pipe fitting 41 is smoothly connected to the first pipe fitting 1 when the limiting member 31 abuts against the adjusting member 32.

[0075] When the limit member 31 is in contact with the adjusting member 32, after the third tube 41 is connected to the first tube 1, the limit member 31 and the adjusting member 32 are still in an abutting state. At this time, after the third tube 41 is rotated to drive the first tube 1 to rotate relative to the second tube 2, the limit member 31 moves toward the other end of the first groove 111. Since the elastic force of the second elastic member 44 is greater than the elastic force of the first elastic member 36, the second elastic member 44 extends to push the movable pin 42 to apply a downward force to the transmission shaft 33. The transmission shaft 33 moves downward to drive the adjusting member 32 to move downward. The first elastic member 36 contracts, and the adjusting member 32 moves into the first groove 111 to shorten the moving range of the limit member 31 in the first groove 111.

[0076] When the third pipe fitting 41 is not connected to the first pipe fitting 1 and the limit member 31 is not in contact with the adjusting member 32, when the third pipe fitting 41 moves downward and is sleeved on the first pipe fitting 1, the lower end of the movable pin 42 applies a downward force to the transmission shaft 33. Since the elastic force of the second elastic member 44 is greater than that of the first elastic member 36, the transmission shaft 33 drives the adjusting member 32 to move from the second groove portion 112 to the first groove portion 111, and the first elastic member 36 shrinks to avoid the installation space of the third pipe fitting 41 and the first pipe fitting 1, so as to facilitate the connection between the third pipe fitting 41 and the first pipe fitting 1.

[0077] In some embodiments, the mounting seat 43 includes a seat body 432 and a cover body 433, at least a portion of the seat body 432 is disposed in the third tube 41, the mounting cavity 431 is disposed in the seat body 432 and has an opening 4311 at one end, the cover body 433 is disposed on the seat body 432 and covers the opening 4311 of the mounting cavity 431, and the second elastic member 44 abuts between the movable pin 42 and the cover body 433.

[0078] Specifically, Figure 2 and Figure 5 As shown, the upper end of the seat body 432 is located in the third tube 41, the upper end of the installation cavity 431 has an opening 4311, and the cover body 433 is disposed in the third tube 41 and connected to the upper end of the seat body 432 to cover the opening 4311 of the installation cavity 431, so as to facilitate the installation of the movable pin 42 and the second elastic member 44.

[0079] Optionally, after the cover body 433 is connected to the seat body 432, the mounting seat 43 is placed in the third pipe fitting 41, and the second connecting screw 6 is passed through the third pipe fitting 41, the seat body 432 and the cover body 433 in sequence to fix the mounting seat 43 in the third pipe fitting 41, thereby improving the connection reliability between the cover body 433 and the seat body 432.

[0080] For example, the cover body 433 and the base body 432 are connected by snap-fit.

[0081] In some embodiments, the steering limit device has a first state and a second state. In the first state, one end of the adjusting member 32 is engaged in one end of the first groove portion 111, and the limit member 31 is movable between the other end of the first groove portion 111 and the adjusting member 32, so that the maximum angle of rotation of the first pipe fitting 1 relative to the second pipe fitting 2 is a first steering angle. In the second state, one end of the adjusting member 32 is engaged in the second groove portion 112, and the limit member 31 is movable between the other end of the first groove portion 111 and one end of the first groove portion 111, so that the maximum angle of rotation of the first pipe fitting 1 relative to the second pipe fitting 2 is a second steering angle, and the second steering angle is greater than the first steering angle.

[0082] Specifically, Figure 6 As shown, in the first state, one end of the adjusting member 32 is engaged with one end of the first groove portion 111. Since the adjusting member 32 occupies the space in the first groove portion 111, the limiting member 31 cannot move to one end of the first groove portion 111 when moving in the first groove portion 111, and can only move between the other end of the first groove portion 111 and the adjusting member 32, thereby shortening the movement range of the limiting member 31 in the first groove portion 111, thereby reducing the steering angle of the first pipe 1 relative to the second pipe 2, avoiding excessive steering angle of the scooter, and improving the safety of the scooter.

[0083] like Figure 7 As shown, in the second state, one end of the adjusting member 32 is engaged in the second groove portion 112. Since the adjusting member 32 does not occupy the space in the first groove portion 111, the limiting member 31 can move in the first groove portion 111 between the other end of the first groove portion 111 and one end of the first groove portion 111, thereby increasing the movement range of the limiting member 31 in the first groove portion 111, thereby increasing the steering angle of the first tube 1 relative to the second tube 2, thereby reducing the storage length of the mobility scooter.

[0084] Optionally, the first state is the riding state, and the second state is the storage state, and the riding state and the storage state are switchable. When the third tube 41 is not connected to the first tube 1, the steering limit device is in the storage state under the action of the first elastic member 36. When the third tube 41 is connected to the first tube 1, the steering limit device is in the riding state under the action of the first elastic member 36 and the second elastic member 44. By limiting the steering angle of the first tube 1 in the riding state to within the first steering angle range, the riding safety is ensured, and the steering angle of the first tube 1 in the storage state is increased to the second steering angle, thereby reducing the storage length of the scooter, reducing the storage space, reducing the packaging length and reducing the transportation cost.

[0085] In some embodiments, the first steering angle is 35 degrees to 65 degrees, and the second steering angle is 90 degrees. By limiting the range of the first steering angle, the steering angle of the first tube 1 relative to the second tube 2 is prevented from being too large, thereby preventing the steering angle of the front wheel 400 from being too large, thereby improving the safety of the scooter. By limiting the second steering angle, the first tube 1 can be rotated 90 degrees relative to the second tube 2 in the second state, thereby increasing the rotatable angle of the front wheel 400 from the first steering angle to 90 degrees, thereby reducing the storage length of the scooter.

[0086] The mobility scooter according to the embodiment of the present invention comprises a steering limiting device according to any one of the above embodiments.

[0087] The scooter of the embodiment of the present invention can change the movement range of the limiting member 31 in the first groove 111 through the steering limiting device of the above embodiment, thereby increasing the rotation angle of the front wheel 400 and reducing the storage length of the scooter.

[0088] In some embodiments, the scooter further comprises a front fork assembly 100 and a frame assembly 200. The front fork assembly 100 comprises a stem tube 110, and the first tube member 1 of the steering limit device forms the stem tube 110. The frame assembly 200 comprises a head tube 210, and the second tube member 2 of the steering limit device forms the head tube 210.

[0089] Specifically, Figure 1 and Figure 2 As shown, the head tube 210 is sleeved on the stem tube 110 and the stem tube 110 is rotatable relative to the head tube 210, which facilitates the connection between the front fork assembly 100 and the frame assembly 200. By rotating the stem tube 110, the front wheel 400 is driven to rotate relative to the frame assembly 200, thereby realizing the steering of the front wheel 400.

[0090] The scooter further includes a rear wheel 500. The front fork assembly 100 is connected to the front wheel 400, and the frame assembly 200 is connected to the rear wheel 500. The connection between the front fork assembly 100 and the frame assembly 200 is used to realize the connection between the front wheel 400 and the rear wheel 500.

[0091] In some embodiments, the scooter further includes a handlebar assembly 300 , the handlebar assembly 300 includes a vertical rod 310 , and the third tube member 41 of the steering limiting device forms the vertical rod 310 .

[0092] Specifically, Figure 1 and Figure 2 As shown, the vertical rod 310 is sleeved on the vertical tube 110 and is detachably connected to the vertical tube 110. Rotating the vertical rod 310 drives the vertical tube 110 to rotate relative to the head tube 210, thereby driving the front wheel 400 to rotate. The setting of the vertical rod 310 facilitates the user to control the direction.

[0093] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0094] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0095] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0096] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0097] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0098] It is to be understood that the above embodiments are exemplary and are not to be construed as limiting the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A steering limit device, characterized in that: include: A first pipe, wherein the outer circumferential surface of the first pipe is provided with a limiting groove penetrating the wall thickness of the first pipe, the limiting groove comprises a first groove portion and a second groove portion, the first groove portion extends along the circumferential direction of the first pipe, and the second groove portion extends from one end of the first groove portion in the circumferential direction of the first pipe along the axial direction of the first pipe; a second pipe member, the second pipe member is sleeved on the outer circumference of the first pipe member, and the first pipe member is rotatable relative to the second pipe member; A limit assembly, the limit assembly includes a limit piece and an adjusting piece, the limit piece is arranged on the second pipe, one end of the limit piece is engaged in the first groove portion and can move circumferentially of the first pipe piece in the first groove portion, one end of the adjusting piece is engaged in the limit groove, and the adjusting piece is movable between the first groove portion and the second groove portion, and is used to adjust the moving range of the limit piece in the first groove portion.

2. The steering limiter according to claim 1, characterized in that: The limiting assembly also includes a transmission shaft, which is installed in the first pipe and connected to the adjusting member. The transmission shaft is movable in the axial direction of the first pipe relative to the first pipe to drive the adjusting member to move along the axial direction of the first pipe.

3. The steering limit device according to claim 2, characterized in that: The limiting component also includes a connecting piece, which is located in the first pipe, and is sleeved on the outer circumference of the transmission shaft and connected to the transmission shaft. The other end of the adjusting piece is connected to the connecting piece.

4. The steering limiter according to claim 3, characterized in that: The limiting assembly also includes a first fixing member and a first elastic member. The first fixing member is arranged in the first tube and is spaced apart from the connecting member in the axial direction of the first tube. One end of the transmission shaft is movably connected to the first fixing member. The first elastic member is located in the first tube and abuts between the first fixing member and the connecting member.

5. The steering limit device according to claim 4, characterized in that: One end of the transmission shaft is a flat part, and the connecting member and the first fixing member are both provided with a flat part hole matched with the flat part to limit the circumferential rotation of the transmission shaft relative to the connecting member and the first fixing member.

6. The steering limiter according to claim 4, characterized in that: The limiting assembly further includes a first retaining spring, a first retaining groove is provided on the transmission shaft, the first retaining spring is retained in the first retaining groove, the first retaining spring is located at an end of the first fixing member away from the connecting member, and is used to limit the axial movement distance of the transmission shaft; and / or, The limiting assembly also includes a second fixing member, which is arranged in the first pipe and located on a side of the connecting member away from the first fixing member, and the other end of the transmission shaft is movably connected to the second fixing member.

7. The steering limiter according to claim 4, characterized in that: It also includes a driving component, which includes a third pipe and a movable pin. The third pipe is detachably or foldably connected to one end of the first pipe, and the movable pin is arranged in the third pipe. The movable pin abuts against the transmission shaft to prompt the adjusting member to move from the second groove portion to the first groove portion.

8. The steering limiter according to claim 7, characterized in that: The driving assembly further includes a mounting seat and a second elastic member, at least a portion of the mounting seat is disposed in the third pipe member, the mounting seat has a mounting cavity, a portion of the movable pin is disposed in the mounting cavity and one end of the movable pin extends out of the mounting seat and abuts against the transmission shaft, the second elastic member is disposed in the mounting cavity and abuts between the movable pin and the wall of the mounting cavity, the elastic force of the second elastic member is greater than the elastic force of the first elastic member, Before the third tube is not connected to or folded with the first tube, and when the adjusting member is located in the second groove and abuts against the limiting member in the axial direction of the first tube, the second elastic member can be compressed to avoid the installation space of the third tube and the first tube.

9. The steering limit device according to claim 8, characterized in that: The mounting seat includes a seat body and a cover body, at least a portion of the seat body is arranged in the third tube, the mounting cavity is arranged in the seat body and is open at one end, the cover body is arranged on the seat body and covers the opening of the mounting cavity, and the second elastic member abuts between the movable pin and the cover body.

10. The steering limiter according to any one of claims 1 to 9, characterized in that: The steering limit device has a first state and a second state. In the first state, one end of the adjusting member is fitted in one end of the first groove portion, and the limit member is movable between the other end of the first groove portion and the adjusting member, so that the maximum angle of rotation of the first pipe member relative to the second pipe member is a first steering angle. In the second state, one end of the adjusting member is engaged in the second groove portion, and the limiting member is movable between the other end of the first groove portion and one end of the first groove portion, so that the maximum angle of rotation of the first tube relative to the second tube portion is a second steering angle, and the second steering angle is greater than the first steering angle.

11. The steering limiter according to claim 10, characterized in that: The first steering angle is 35 degrees to 65 degrees, and the second steering angle is 90 degrees.

12. A mobility scooter, characterized in that: It comprises a steering limit device as claimed in any one of claims 1 to 11.

13. The mobility scooter according to claim 12, characterized in that: Also includes: A front fork assembly, the front fork assembly comprising a vertical tube, the first tube member of the steering limit device forming the vertical tube; A frame assembly comprises a head pipe, and the second pipe member of the steering limit device forms the head pipe.

14. The mobility scooter according to claim 12, characterized in that: The vehicle further comprises a handlebar assembly, wherein the handlebar assembly comprises a vertical rod, and the third pipe member of the steering limiting device forms the vertical rod.

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