Steering limiting device and scooter

Abstract

The utility model relates to the technical field of riding instead of walking, 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] This utility model relates to the field of personal transportation technology, specifically to a steering limit device and a personal transportation vehicle. Background Technology

[0002] As a convenient and environmentally friendly mode of transportation, mobility scooters are attracting increasing attention. They steer by turning the handlebars, which rotates the front wheel. However, if the handlebar angle is too large, the scooter can easily tip over, affecting user safety. To address this, related technologies have proposed steering limit devices to restrict the steering angle of the scooter, limiting the rotation angle of the front wheel, preventing excessive steering, and improving safety.

[0003] However, when storing a mobility scooter, the limited range of rotation angle of the front wheels increases the scooter's storage length, making it inconvenient for storage and transportation. Utility Model Content

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention provide a steering limit device that can adjust the rotation angle of the front wheels, reducing the folded length of the mobility scooter.

[0005] This utility model embodiment also proposes a mobility scooter.

[0006] The steering limiting device of this utility model embodiment includes: a first pipe, the outer circumferential surface of which is provided with a limiting groove penetrating the wall thickness of the first pipe, the limiting groove including a first groove portion and a second groove portion, the first groove portion extending circumferentially along the first pipe, and the second groove portion extending axially from one end of the first groove portion in the circumferential direction of the first pipe; a second pipe, the second pipe being sleeved on the outer circumference of the first pipe, the first pipe being rotatable relative to the second pipe; and a limiting assembly, the limiting assembly including a limiting member and an adjusting member, the limiting member being disposed on the second pipe, one end of the limiting member engaging within the first groove portion and being movable circumferentially within the first groove portion, and one end of the adjusting member engaging within the limiting groove, and the adjusting member being movable between the first groove portion and the second groove portion, for adjusting the movement range of the limiting member within the first groove portion.

[0007] The steering limiting device of this utility model has a limiting groove on a first pipe and a limiting member on a second pipe that fits into the first groove. The first groove extends circumferentially along the first pipe. When the first pipe rotates relative to the second pipe, the limiting member can limit the rotation angle of the first pipe. The movement range of the limiting member in the first groove can be adjusted by moving an adjusting member between the first and second grooves. When the adjusting member is in the first groove, it occupies part of the space in the first groove, and the movement range of the limiting member in the first groove is limited. When the adjusting member moves to the second groove, the movement range of the limiting member in the first groove increases, thereby increasing the rotation angle of the first pipe relative to the second pipe. This, in turn, increases the rotation angle of the component connected to the first pipe in the equipment with the steering limiting device, reduces the storage length of the component, and facilitates the storage and transportation of the equipment.

[0008] In some embodiments, the limiting component further includes a drive shaft, which is installed inside the first pipe and connected to the adjusting member. The drive shaft is movable relative to the first pipe in the axial direction of the first pipe to drive the adjusting member to move axially along the first pipe.

[0009] In some embodiments, the limiting component further includes a connector located inside the first tube, the connector being sleeved on the outer periphery of the drive shaft and connected to the drive shaft, and the other end of the adjusting member being connected to the connector.

[0010] In some embodiments, the limiting component further includes a first fixing member and a first elastic member. The first fixing member is disposed inside the first tube and is spaced apart from the connecting member in the axial direction of the first tube. One end of the drive shaft is movably connected to the first fixing member, and the first elastic member is located inside the first tube and abuts against the first fixing member and the connecting member.

[0011] In some embodiments, one end of the drive shaft is flat, and both the connector and the first fixing member are provided with flat holes that mate with the flat portion to restrict the circumferential rotation of the drive shaft relative to the connector and the first fixing member.

[0012] In some embodiments, the limiting component further includes a first retaining ring, the drive shaft is provided with a first retaining groove, the first retaining ring is engaged in the first retaining groove, the first retaining ring is located at the end of the first fixing member away from the connecting member, and is used to limit the axial movement distance of the drive shaft; and / or, the limiting component further includes a second fixing member, the second fixing member is disposed in the first tube and located on the side of the connecting member away from the first fixing member, and the other end of the drive shaft is movably connected to the second fixing member.

[0013] In some embodiments, the steering limiting device further includes a drive assembly comprising a third tube and a movable pin, the third tube being detachably or foldably connected to one end of the first tube, the movable pin being disposed within the third tube and abutting against the drive shaft to cause the adjusting member to move from the second groove to the first groove.

[0014] In some embodiments, the drive assembly further includes a mounting base and a second elastic member. At least a portion of the mounting base is disposed within the third tube. The mounting base has a mounting cavity. A portion of the movable pin is disposed within the mounting cavity, and one end of the movable pin extends out of the mounting base and abuts against the drive shaft. The second elastic member is disposed within the mounting cavity and abuts against the movable pin and the wall of the mounting cavity. The elastic force of the second elastic member is greater than that of the first elastic member. Before the third tube is connected to or folded with the first tube, and when the adjusting member is located within the second groove and abuts against the limiting member axially in the first tube, the second elastic member can be compressed to allow space between the third tube and the first tube.

[0015] In some embodiments, the mounting base includes a base body and a cover body, at least a portion of the base body is disposed within the third tube, the mounting cavity is disposed within the base body and open at one end, the cover body is disposed on the base 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 limiting 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, and the limiting member is movable between the other end of the first groove and the adjusting member, so that the maximum angle of rotation of the first pipe relative to the second pipe is a first steering angle. In the second state, one end of the adjusting member is engaged in the second groove, and the limiting member is movable between the other end of the first groove and one end of the first groove, so that the maximum angle of rotation of the first pipe relative to the second pipe 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 35-65 degrees and the second steering angle is 90 degrees.

[0018] The mobility scooter of this utility model includes the steering limiting device described in the above embodiment.

[0019] The mobility scooter of this utility model embodiment, through the aforementioned steering limiting device, can realize the variation of the movement range of the limiting member within the first groove, which can increase the rotation angle of the front wheel, reduce the storage length of the mobility scooter, and facilitate storage and transportation.

[0020] In some embodiments, the mobility scooter further includes: a front fork assembly including a steerer tube, wherein a first member of the steering limiter forms the steerer tube; and a frame assembly including a head tube, wherein a second member of the steering limiter forms the head tube.

[0021] In some embodiments, the mobility scooter further includes a handlebar assembly, the handlebar assembly including a pole, and a third tube of the steering limiter forming the pole. Attached Figure Description

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

[0023] Figure 2 This is an exploded schematic diagram of the mobility scooter according to an embodiment of the present invention.

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

[0025] Figure 4 This is a schematic diagram of the limiting component according to an embodiment of the present utility model.

[0026] Figure 5 This is a schematic diagram of the driving component according to an embodiment of the present invention.

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

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

[0029] Figure label:

[0030] Fork assembly 100, seat tube 110, frame assembly 200, head tube 210.

[0031] Handlebar assembly 300, stem 310, front wheel 400, rear wheel 500.

[0032] First fitting 1, limiting groove 11, first groove portion 111, second groove portion 112, second fitting 2.

[0033] Limiting component 3, limiting element 31,

[0034] Adjusting component 32, drive shaft 33, first slot 331,

[0035] Connector 34, first fixing member 35, first elastic member 36, first retaining ring 37, second fixing member 38, second retaining ring 39, third retaining ring 310.

[0036] Drive assembly 4, third fitting 41, movable pin 42,

[0037] Mounting base 43, mounting cavity 431, opening 4311, base body 432, cover body 433, second elastic element 44.

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

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

[0040] The steering limiting device of this utility model embodiment includes a first pipe 1, a second pipe 2, and a limiting assembly 3. The outer circumferential surface of the first pipe 1 is provided with a limiting groove 11 penetrating the wall thickness of the first pipe 1. The limiting groove 11 includes a first groove portion 111 and a second groove portion 112. The first groove portion 111 extends circumferentially along the first pipe 1, and the second groove portion 112 extends axially from one end of the first groove portion 111 in the circumferential 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 component 3 includes a limiting member 31 and an adjusting member 32. The limiting member 31 is disposed on the second pipe 2. One end of the limiting member 31 is engaged in the first groove 111 and can move circumferentially within the first groove 111. 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 to adjust the movement range of the limiting member 31 within the first groove 111.

[0041] Specifically, such as Figures 1-4As shown, the first pipe 1 is connected to the front wheel 400 of the mobility 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 rotatably connected to the first pipe 1, so that the first pipe 1 can rotate relative to the second pipe 2 about the axis of the first pipe 1, realizing the steering of the first pipe 1. That is to say, when the first pipe 1 rotates, the second pipe 2 will not rotate synchronously with the first pipe 1. By setting the limiting member 31 on the second pipe 2 and fitting one end of the limiting member 31 in the first groove 111, since the first groove 111 extends circumferentially along the first pipe 1, the limiting member 31 is limited by the first groove 111 when the first pipe 1 rotates, thereby limiting the steering angle of the first pipe 1, and thus limiting the steering angle of the front wheel 400.

[0042] The second groove 112 and the first groove 111 are arranged sequentially in the axial direction of the first pipe 1. The adjusting member 32 is located inside the first pipe 1 and is movable in the axial direction of the first pipe 1 relative to the first pipe 1. By fitting one end of the adjusting member 32 into the limiting groove 11, the adjusting member 32 can move between the first groove 111 and the second groove 112. By adjusting the position of the adjusting member 32, the movement range of the limiting member 31 in the first groove 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 111, since the second groove 112 extends from one end of the first groove 111 in the circumferential direction along the axial direction of the first pipe 1, that is, the second groove 112 is connected to one end of the first groove 111 in the circumferential direction, the adjusting member 32 moves from the second groove 112 to the first groove 111. The adjusting member 32 is located at one end of the first groove 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 111, the movable distance of the limiting member 31 in the circumferential direction of the first groove 111 is shortened, reducing the steering angle of the first pipe 1, avoiding excessive steering angle of the mobility scooter, and improving the safety of the mobility scooter.

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

[0045] Optionally, the second pipe fitting 2 is connected to the first pipe fitting 1 via a bowl assembly 7. A limiting member 31 is fixed to the second pipe fitting 2, and one end of the limiting member 31 passes through the second pipe fitting 2 and fits into the first groove 111 of the first pipe fitting 1. For example, the limiting member 31 is a limiting screw.

[0046] In this embodiment of the present invention, a limiting groove 11 is formed on the first pipe 1 of the steering limiting device, and a limiting member 31 is provided on the second pipe 2 and fits in the first groove 111. The first groove 111 extends circumferentially along the first pipe 1. When the first pipe 1 rotates relative to the second pipe 2, the limiting member 31 can limit the rotation angle of the first pipe 1. The movement range of the limiting member 31 in the first groove 111 is adjusted by the movement of the adjusting member 32 between the first groove 111 and the second groove 112. When the adjusting member 32 is located in the first groove 111, it occupies part of the space in the first groove 111, and the movement range of the limiting member 31 in the first groove 111 is limited. When the adjusting member 32 moves to the second groove 112, the movement range of the limiting member 31 in the first groove 111 becomes larger, 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 with the steering limiting device, reducing the storage length of the component, and facilitating the storage and transportation of the equipment.

[0047] In some embodiments, the limiting component 3 further includes a drive shaft 33, which is installed inside the first pipe 1 and connected to the adjusting member 32. The drive shaft 33 is movable relative to the first pipe 1 in the axial direction of the first pipe 1 so as to drive the adjusting member 32 to move in the axial direction of the first pipe 1.

[0048] Specifically, such as Figures 2-4 As shown, the drive shaft 33 extends axially along the first pipe fitting 1. The drive shaft 33 is installed inside the first pipe fitting 1 and connected to the adjusting member 32. This allows the adjusting member 32 to move between the first groove 111 and the second groove 112 by moving the drive shaft 33 axially along the first pipe fitting 1, thereby adjusting the range of movement of the limiting member 31 within the first groove 111.

[0049] In some embodiments, the limiting component 3 further includes a connector 34, which is located inside the first tube 1, is sleeved on the outer periphery of the drive shaft 33 and connected to the drive shaft 33, and the other end of the adjusting component 32 is connected to the connector 34.

[0050] Specifically, such as Figures 2-4As shown, the limiting assembly 3 also includes a second retaining ring 39 and a third retaining ring 310. The drive shaft 33 is provided with a second retaining groove and a third retaining groove, which are spaced apart axially along the drive shaft 33. The second retaining ring 39 is engaged in the second retaining groove, and the third retaining ring 310 is engaged in the third retaining groove. The connecting member 34 is located between the second retaining ring 39 and the third retaining ring 310, fixing the connecting member 34 to the drive shaft 33 and preventing axial movement of the connecting member 34 relative to the drive shaft 33. One end of the adjusting member 32 fits into the limiting groove 11, and the other end of the adjusting member 32 is connected to the connecting member 34. The connecting member 34 facilitates the transmission connection between the adjusting member 32 and the drive 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 fitted onto the limiting groove 11, by making the adjusting member 32 and the connecting member 34 detachably connected, it is convenient to install the drive shaft 33 into the first pipe 1.

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

[0053] For example, the connector 34 is integrally formed with the drive shaft 33, or the connector 34 is fixed to the drive shaft 33 by screws.

[0054] In some embodiments, the limiting component 3 further includes a first fixing member 35 and a first elastic member 36. The first fixing member 35 is disposed inside 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 inside the first tube 1 and abuts between the first fixing member 35 and the connecting member 34.

[0055] Specifically, such as Figures 2-4 As shown, the first fixing member 35 is located inside the first pipe 1. The first fixing member 35 is connected to the first pipe 1 to fix the first fixing member 35 inside the first pipe 1. One end of the drive shaft 33 passes through the first fixing member 35 and is movable relative to the first fixing member 35 along the axial direction of the first pipe 1. The first elastic member 36 is sleeved on the drive 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. The first fixing member 35 and the first elastic member 36 provide fixed support for one end of the drive shaft 33.

[0056] Optionally, the first fixing member 35 and the first pipe member 1 are connected by the first connecting screw 5.

[0057] For ease of description, we will take the example where the axial direction of the first pipe fitting 1 is aligned with the vertical direction, and the connecting member 34 is located above the first fixing member 35. When the drive shaft 33 is subjected to a downward force and moves downward, since the first fixing member 35 is fixed to the first pipe fitting 1 and the connecting member 34 is fixedly mounted on the drive shaft 33, the drive 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 drive shaft 33 is not subjected to a force, the first elastic member 36 pushes the connecting member 34 to move upward. The connecting member 34 drives the adjusting member 32 and the drive 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 provided between the first fixing member 35 and the connecting member 34. The elastic force of the first elastic member 36 ensures that when the transmission shaft 33 is not subjected to a downward force, the adjusting member 32 is always located in the second groove 112, thereby ensuring that the movable range of the limiting member 31 in the first groove 111 is increased.

[0059] In some embodiments, one end of the drive shaft 33 is flat, and both the connector 34 and the first fixing member 35 are provided with flat holes that mate with the flat part, so as to restrict the drive shaft 33 from rotating circumferentially relative to the connector 34 and the first fixing member 35.

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

[0061] In this embodiment, by providing a flat hole in the connector 34, the connector 34 is prevented from rotating circumferentially relative to the drive shaft 33, and the adjusting member 32 is prevented from rotating circumferentially within the limiting groove 11, thereby avoiding affecting the steering angle of the front wheel 400.

[0062] Optionally, the upper diameter of the drive shaft 33 is smaller than the diameter of the drive shaft 33, which is beneficial to the weight reduction of the drive shaft 33.

[0063] In some embodiments, the limiting component 3 further includes a first retaining ring 37. The drive shaft 33 is provided with a first retaining groove 331. The first retaining ring 37 is engaged in the first retaining groove 331. The first retaining ring 37 is located at the end of the first fixing member 35 away from the connecting member 34, and is used to limit the axial movement distance of the drive shaft 33.

[0064] Specifically, such as Figures 2-4As shown, the first retaining ring 37 is located below the first fixing member 35. The lower end of the drive shaft 33 passes through the first fixing member 35 and engages with the first retaining ring 37. When the drive shaft 33 moves downward, it drives the first retaining ring 37 to move downward synchronously. When the drive shaft 33 moves upward, it drives the first retaining ring 37 to move upward until the first retaining ring 37 abuts against the lower end of the first fixing member 35. The first retaining ring 37 is provided to limit the upward movement distance of the drive shaft 33 and prevent the drive shaft 33 from detaching from the first tube 1.

[0065] In some embodiments, the limiting component 3 further includes a second fixing member 38, which is disposed inside the first tube 1 and located on the side of the connector 34 away from the first fixing member 35, and the other end of the drive shaft 33 is movably connected to the second fixing member 38.

[0066] Specifically, such as Figures 2-4 As shown, the second fixing member 38 is located above the first fixing member 35, and the upper end of the drive shaft 33 passes through the second fixing member 38. The drive shaft 33 can move along the axial direction of the first tube 1 relative to the second fixing member 38. The second fixing member 38 is used to fix and support the upper end of the drive shaft 33.

[0067] Optionally, the second fastener 38 can be connected to the first pipe fitting 1 by interference fit or by snap-fit.

[0068] In some embodiments, the steering limiting device further includes a drive 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. The movable pin 42 is disposed in the third tube 41 and abuts against the drive shaft 33 to cause the adjusting member 32 to move from the second groove 112 to the first groove 111.

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

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

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

[0072] In some embodiments, the drive assembly 4 further includes a mounting base 43 and a second elastic member 44. At least a portion of the mounting base 43 is disposed within the third tube 41. The mounting base 43 has a mounting cavity 431. A portion of the movable pin 42 is disposed within the mounting cavity 431, and one end of the movable pin 42 extends out of the mounting base 43 and abuts against the drive shaft 33. The second elastic member 44 is disposed within the mounting cavity 431 and abuts against the wall of the movable pin 42 and 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. Before the third tube 41 is connected to or folded with the first tube 1, and when the adjusting member 32 is located within the second groove 112 and abuts against the limiting member 31 axially with the first tube 1, the second elastic member 44 can be compressed to allow space for the installation of the third tube 41 and the first tube 1.

[0073] Specifically, such as Figure 2 and Figure 5 As shown, the upper end of the mounting base 43 is located inside the third pipe 41, the lower end of the mounting base 43 extends into the first pipe 1 and is located in the second fixing member 38, the upper end of the movable pin 42 is located inside the mounting cavity 431, the lower end of the movable pin 42 extends out of the mounting base 43 and abuts against the upper end of the drive 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 base 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 extends, and the adjusting member 32 is located in the second groove 112. When the limiting member 31 is located at one end of the first groove 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 fitted onto the first pipe fitting 1, the lower end of the movable pin 42 applies a downward force to the drive shaft 33. Since the limiting member 31 and the adjusting member 32 abut against each other, the drive shaft 33 cannot move downward, and the first elastic member 36 cannot be compressed, causing the second elastic member 44 to contract and make way for the installation space between the third pipe fitting 41 and the first pipe fitting 1, ensuring that the third pipe fitting 41 and the first pipe fitting 1 are smoothly connected when the limiting member 31 and the adjusting member 32 abut against each other.

[0075] When the limiting member 31 and the adjusting member 32 are in contact, after the third tube 41 is connected to the first tube 1, the limiting member 31 and the adjusting member 32 are still in contact. At this time, after rotating the third tube 41 to drive the first tube 1 to rotate relative to the second tube 2, the limiting member 31 moves towards 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 movement range of the limiting 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 limiting 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 112 to the first groove 111. The first elastic member 36 retracts to make room for the installation of the third pipe fitting 41 and the first pipe fitting 1, which facilitates the connection between the third pipe fitting 41 and the first pipe fitting 1.

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

[0078] Specifically, such as Figure 2 and Figure 5 As shown, the upper end of the seat 432 is located inside the third pipe 41, the upper end of the mounting cavity 431 has an opening 4311, and the cover 433 is located inside the third pipe 41 and connected to the upper end of the seat 432 to cover the opening 4311 of the mounting cavity 431, which facilitates the installation of the movable pin 42 and the second elastic member 44.

[0079] Optionally, after the cover 433 is connected to the seat 432, the mounting base 43 is placed inside the third pipe 41. The second connecting screw 6 passes through the third pipe 41, the seat 432 and the cover 433 in sequence to fix the mounting base 43 inside the third pipe 41, which improves the connection reliability between the cover 433 and the seat 432.

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

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

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

[0083] like Figure 7 As shown, in the second state, one end of the adjusting member 32 is fitted into the second groove 112. Since the adjusting member 32 does not occupy the space in the first groove 111, the limiting member 31 can move between the other end of the first groove 111 and one end of the first groove 111, increasing the range of movement of the limiting member 31 in the first groove 111, thereby increasing the turning angle of the first tube 1 relative to the second tube 2, and thus 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 can be switched. 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 the first steering angle range, the riding safety is ensured. And by increasing the steering angle of the first tube 1 in the storage state to the second steering angle, the storage length of the scooter is reduced, the storage space is reduced, the packaging length is reduced, and the transportation cost is reduced.

[0085] In some embodiments, the first steering angle is 35-65 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 front wheel 400 from having an excessively large steering angle and improving the safety of the mobility scooter. By limiting the second steering angle, the first tube 1 can rotate 90 degrees relative to the second tube 2 in the second state, thereby increasing the rotation angle of the front wheel 400 from the first steering angle to 90 degrees and reducing the folded length of the mobility scooter.

[0086] The mobility scooter of this utility model includes a steering limit device using any of the above embodiments.

[0087] The mobility scooter of this utility model embodiment, through the steering limiting device of the above embodiment, can realize the change of the movement range of the limiting member 31 in the first groove 111, which can increase the rotation angle of the front wheel 400 and reduce the storage length of the mobility scooter.

[0088] In some embodiments, the mobility scooter further includes a front fork assembly 100 and a frame assembly 200. The front fork assembly 100 includes a steerer tube 110, and a first tube 1 of the steering limiter is formed in the steerer tube 110. The frame assembly 200 includes a head tube 210, and a second tube 2 of the steering limiter is formed in the head tube 210.

[0089] Specifically, such as Figure 1 and Figure 2 As shown, the head tube 210 is sleeved on the vertical tube 110 and the vertical 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 vertical 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 mobility scooter also includes a rear wheel 500, a front fork assembly 100 connected to the front wheel 400, and a frame assembly 200 connected to the rear wheel 500. The connection between the front wheel 400 and the rear wheel 500 is achieved through the connection between the front fork assembly 100 and the frame assembly 200.

[0091] In some embodiments, the mobility scooter also includes a handlebar assembly 300, which includes a pole 310, and a third tube 41 of the steering limit device forms the pole 310.

[0092] Specifically, such as Figure 1 and Figure 2 As shown, the upright 310 is sleeved on the vertical tube 110 and detachably connected to the vertical tube 110. Rotating the upright 310 causes the vertical tube 110 to rotate relative to the head tube 210, which in turn drives the front wheel 400 to rotate. The upright 310 facilitates the user to control the direction.

[0093] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0094] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0095] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0096] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0097] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0098] It is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A steering limit device, characterized in that, include: A first pipe fitting has a limiting groove on its outer circumferential surface that extends through the wall thickness of the first pipe fitting. The limiting 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. The second pipe fitting is sleeved on the outer periphery of the first pipe fitting, and the first pipe fitting is rotatable relative to the second pipe fitting. A limiting assembly includes a limiting member and an adjusting member. The limiting member is disposed on the second pipe fitting. One end of the limiting member engages within the first groove and can move circumferentially within the first groove of the first pipe fitting. One end of the adjusting member engages within the limiting groove and can move between the first groove and the second groove, thereby adjusting the range of movement of the limiting member within the first groove.

2. The steering limiting device according to claim 1, characterized in that, The limiting component further includes a drive shaft, which is installed inside the first pipe and connected to the adjusting member. The drive shaft is movable relative to the first pipe in the axial direction of the first pipe to drive the adjusting member to move axially along the first pipe.

3. The steering limiting device according to claim 2, characterized in that, The limiting component also includes a connector located inside the first tube, the connector being sleeved on the outer periphery of the drive shaft and connected to the drive shaft, and the other end of the adjusting component being connected to the connector.

4. The steering limiting device according to claim 3, characterized in that, The limiting component further includes a first fixing member and a first elastic member. The first fixing member is disposed inside 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 inside the first tube and abuts against the first fixing member and the connecting member.

5. The steering limiting device according to claim 4, characterized in that, One end of the drive shaft is flat, and both the connector and the first fixing member are provided with flat holes that mate with the flat end to restrict the circumferential rotation of the drive shaft relative to the connector and the first fixing member.

6. The steering limiting device according to claim 4, characterized in that, The limiting component further includes a first retaining ring, and the drive shaft is provided with a first retaining groove. The first retaining ring is engaged in the first retaining groove and is located at the end of the first fixing member away from the connecting member, for limiting the axial movement distance of the drive shaft; and / or, The limiting component further includes a second fixing member, which is disposed inside the first tube and located on the side of the connector away from the first fixing member. The other end of the drive shaft is movably connected to the second fixing member.

7. The steering limiting device according to claim 4, characterized in that, It also includes a drive 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. The movable pin is disposed inside the third tube and abuts against the drive shaft to cause the adjusting member to move from the second groove to the first groove.

8. The steering limit device according to claim 7, characterized in that, The drive assembly further includes a mounting base and a second elastic element. At least a portion of the mounting base is disposed within the third tubular component. The mounting base has a mounting cavity. A portion of the movable pin is disposed within the mounting cavity, and one end of the movable pin extends out of the mounting base and abuts against the drive shaft. The second elastic element is disposed within the mounting cavity and abuts against the movable pin and the wall of the mounting cavity. The elastic force of the second elastic element is greater than that of the first elastic element. Before the third fitting is connected to or folded with the first fitting, and when the adjusting member is located in the second groove and abuts against the limiting member in the axial direction of the first fitting, the second elastic member can be compressed to make way for the installation space of the third fitting and the first fitting.

9. The steering limiting device according to claim 8, characterized in that, The mounting base includes a base body and a cover body. At least a portion of the base body is disposed within the third pipe fitting. The mounting cavity is disposed within the base body and is open at one end. The cover body is disposed on the base body and covers the opening of the mounting cavity. The second elastic member abuts between the movable pin and the cover body.

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

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

12. A mobility scooter, characterized in that, Includes the steering limit device as described in any one of claims 1-11.

13. The mobility scooter according to claim 12, characterized in that, Also includes: A fork assembly, the fork assembly including a vertical tube, wherein a first tube of the steering limiting device forms the vertical tube; A frame assembly, the frame assembly including a head tube, the second tube of the steering limiter forming the head tube.

14. The mobility scooter according to claim 12, characterized in that, It also includes a handlebar assembly, which includes a stem, and the third tube of the steering limiter forms the stem.

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