A type of self-balancing scooter

Abstract

This utility model relates to the field of children's vehicle technology, specifically to a balance bike, which mainly includes: a frame, a front connecting seat, a seat connecting seat, and a rear connecting seat. By setting a handlebar adjustment component, the handlebar height can be adjusted independently with ease to accommodate children of different heights, which helps to expand the product's applicable population and service life. In cooperation with the handlebar orientation mechanism, the handlebar and seat bar can only move axially, effectively avoiding circumferential rotation, ensuring the smoothness and accuracy of the adjustment process, and providing a better user experience. It solves the problem of extremely unsmooth adjustment process and difficulty in accurately and quickly positioning to the required height.

Description

[Technical Field]

[0001] This utility model relates to the field of children's vehicle technology, specifically to a balance bike. [Background Technology]

[0002] The existing balance bike is a pedalless riding tool designed for young children. It requires pushing off the ground with both feet to provide gliding power. It is a transitional product for children before they learn to ride a bicycle and can effectively train their sense of balance and physical coordination.

[0003] The effectiveness of this product is highly dependent on the fit between the vehicle and the child's height; therefore, the adjustability of the seat and handlebar height is crucial. To accommodate the height differences of children of different ages and those who are growing rapidly, existing children's balance bikes generally adopt adjustable seat and handlebar height designs, but there are still significant shortcomings, mainly in the following aspects:

[0004] First, many adjustment mechanisms often require the use of tools such as wrenches and cumbersome operations to complete the adjustment, which is laborious and inconvenient.

[0005] Secondly, some adjustment mechanisms may lack sufficient locking force or easily loosen due to vibration during use. This could cause the handlebars or seat to suddenly shift while the child is riding, posing a safety risk.

[0006] Furthermore, when adjusting the height of the handle or seat lever, the lever itself lacks an effective anti-rotation guide mechanism, causing it to rotate circumferentially with the adjustment action. The adjustment process requires manual positioning and alignment with the locking holes, making the adjustment process unsmooth and difficult to accurately and quickly position to the desired height, thus affecting the ease of use.

[0007] In view of the above-mentioned technical problems, this utility model is proposed in this study. [Utility Model Content]

[0008] This utility model solves at least one of the technical problems by providing a balance scooter, mainly comprising: a frame, a front connecting seat, a seat connecting seat, and a rear connecting seat. By setting a handlebar adjustment component, the handlebar height can be easily and effortlessly adjusted independently to accommodate children of different heights, thus expanding the product's applicable population and service life. Furthermore, by cooperating with the handlebar orientation mechanism, the handlebar and seat bar can only move axially, effectively avoiding circumferential rotation, ensuring the smoothness and accuracy of the adjustment process, and providing a better user experience. This solves the problem of an extremely unsmooth adjustment process and difficulty in accurately and quickly positioning the desired height.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a balance scooter, including a frame, a front connecting seat at the front end of the frame, a front wheel assembly located at the lower part of the frame being rotatably connected to the front connecting seat; a rear connecting seat at the rear end of the frame, a rear wheel assembly being rotatably connected to the rear connecting seat; a seat connecting seat in the middle of the frame, a seat assembly being connected to the seat connecting seat; the front wheel assembly including a front wheel support, a front wheel, and a control rod, the front wheel being rotatably connected to the front wheel support, the control rod being relatively fixedly disposed on the upper part of the front wheel support, the control rod having a hollow structure and being rotatably connected to the front connecting seat, a handlebar connected to the control rod, a handlebar adjustment assembly between the handlebar and the control rod to adjust the height of the handlebar relative to the control rod, and a handlebar orientation mechanism between the handlebar and the control rod to prevent the handlebar from rotating relative to the control rod when adjusting its height.

[0010] As described above, the handlebar adjustment assembly includes an operating part, a linkage, a drive component, and a locking component. The operating part is located on the upper part of the handlebar. The middle part of the drive component is rotatably connected to the handlebar. One end of the drive component abuts against the operating part, and the other end is connected to one end of the linkage. The locking component is elastically and retractably located at the lower end of the handlebar and connected to the other end of the linkage. The control rod has multiple adjustment holes for engaging and limiting the locking component. When the operating part is operated, the drive component links the linkage to move the locking component to the unlocked position, and the handlebar can slide relative to the control rod for height adjustment. When the operating part is released, the locking component elastically extends and is placed in the locked position, so that the locking component engages with one of the adjustment holes, thereby fixing the handlebar at a preset height.

[0011] As described above, the handlebar orientation mechanism includes a first guide key integrally formed on the inner side of the control rod and extending axially, and a first keyway integrally formed on the handlebar and extending axially, wherein the first guide key and the first keyway are slidably engaged.

[0012] As described above, in a self-balancing scooter, a clamping connecting seat is fixedly connected to the upper end of the control rod. The clamping connecting seat has a clamping notch. One end of the clamping notch is rotatably connected to a handlebar locking wrench. A clamping plate is provided on the upper part of the control rod at the clamping notch to clamp and lock the handlebar. A locking protrusion is formed on the hinge end of the handlebar locking wrench on the side opposite to the clamping plate. The free end of the handlebar locking wrench forms a wrench part. The clamping connecting seat has an unlocking notch that communicates with the clamping notch to facilitate the use of the wrench part.

[0013] As described above, in a self-balancing scooter, the seat assembly includes a seat and a seat post. The seat is connected to the upper end of the seat post, and the lower part of the seat post is slidably connected to a seat connecting seat. A seat orientation mechanism is also provided between the seat assembly and the seat connecting seat to prevent the seat post from rotating relative to the seat connecting seat when adjusting its height. A clamp is fitted on the seat connecting seat to lock the seat post relative to the seat connecting seat. The opening of the clamp is provided with a fastener that can lock the clamp in place. By locking the fastener, the clamp can lock the seat post at the current height position.

[0014] As described above, the seat orientation mechanism includes a second guide key integrally formed on the inner side wall of the seat connecting seat and extending axially, and a second keyway integrally formed on the outer side wall of the seat rod and extending axially. The second guide key and the second keyway are slidably engaged to restrict the rotation of the seat rod.

[0015] As described above, in a self-balancing scooter, at least two clamping blocks are spaced apart at the upper end of the seat connecting seat, and an encircling space is formed between the clamping blocks for sliding engagement of the seat rod. The clamp is sleeved on the outside of the clamping blocks to clamp and lock the seat rod through the clamping blocks.

[0016] As described above, a self-balancing scooter has a rotating engagement assembly between the front connecting seat and the control rod. The rotating engagement assembly includes a first ring and a second ring. The first ring is fixedly connected to the control rod, and the second ring is fixedly connected to the front connecting seat. One end of the first ring has a rotating engagement plane, and one end of the second ring extends inward to form a rotating engagement shoulder. The rotating engagement shoulder has a fixed engagement plane for sliding engagement with the rotating engagement plane. The diameter of the rotating engagement shoulder is D1, and the inner diameter of the first ring is D2. Therefore, 2mm > D1 - D2 > 0.

[0017] As described above, the outer diameter of the front connecting seat is D3, and the outer diameter of the handlebar is D4, where 25mm > D3 - D4 > 5mm.

[0018] As described above, the frame of the self-balancing scooter is made of lightweight aluminum-magnesium alloy, and a footrest is integrally formed on the frame and located below the seat connection seat.

[0019] Compared with the prior art, the present invention provides a self-balancing scooter with the following advantages:

[0020] 1. In this application, the handle adjustment component allows for easy and effortless independent adjustment of the handle height to accommodate children of different heights, which helps to expand the product's applicable population and service life. Furthermore, by cooperating with the handle orientation mechanism, the handle bar and seat bar can only move axially, effectively avoiding circumferential rotation, ensuring the smoothness and precision of the adjustment process, and providing a better user experience.

[0021] 2. In this application, the height of the seat assembly and the seat connecting seat can be adjusted vertically and a seat orientation mechanism is provided. When the seat rod is adjusted in height relative to the seat connecting seat, the sliding is effectively guided by the cooperation between the second guide key and the second keyway to limit the rotation of the seat rod relative to the seat connecting seat, so as to make the adjustment smoother and more precise.

[0022] 3. In this application, by using a handlebar locking wrench and a clamping plate on the control lever to hold the handlebar, it is possible to prevent the handlebar from loosening on its own due to vibration or accidental collision, thereby improving the reliability of the auxiliary locking state.

[0023] 4. In this application, a rotating fit assembly is provided between the front connecting seat and the control lever, so that the outer diameter of the handle lever is close to and coordinated with the outer diameter of the front connecting seat, avoiding large size differences that would affect the structural proportions. Furthermore, given a fixed outer diameter of the front connecting seat, the outer diameter of the handle lever can be maximized, ensuring that the handle lever has good mechanical strength. [Attached Image Description]

[0024] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0025] Figure 1 This is one of the structural schematic diagrams of the self-balancing scooter in this utility model;

[0026] Figure 2 This is the second structural schematic diagram of the self-balancing scooter in this utility model;

[0027] Figure 3 This is a partial structural cross-sectional view of the self-balancing scooter in this utility model;

[0028] Figure 4 This is a cross-sectional view of the handlebar of the self-balancing scooter in this utility model;

[0029] Figure 5 This is a cross-sectional view of the handlebar and front wheel support of the balance scooter in this utility model;

[0030] Figure 6 This utility model Figure 5 One of the enlarged schematic cross-sectional views;

[0031] Figure 7 This utility model Figure 5Partial enlarged schematic cross-sectional view 2;

[0032] Figure 8 This is a partial explosion diagram of the self-balancing scooter in this utility model;

[0033] Figure 9 This is one of the structural schematic diagrams of the front wheel support in the self-balancing scooter of this utility model;

[0034] Figure 10 This utility model Figure 9 A magnified view of a portion of the image;

[0035] Figure 11 This is the second schematic diagram of the front wheel support of the self-balancing scooter in this utility model;

[0036] Figure 12 This utility model Figure 11 A magnified view of a portion of the image;

[0037] Figure 13 This is a partially enlarged schematic diagram of the front wheel support in this utility model;

[0038] Figure 14 This is a schematic cross-sectional view of the frame structure in this utility model;

[0039] Figure 15 This utility model Figure 14 A magnified view of a portion of the image.

[0040] In the picture:

[0041] 1. Frame; 10. Footrest; 2. Front Connector; 3. Rear Connector; 30. Rear Wheel Assembly; 31. Rear Wheel; 4. Seat Connector; 40. Seat Assembly; 41. Seat; 42. Seat Post; 43. Seat Orientation Mechanism; 431. Second Guide Key; 432. Second Keyway; 44. Clamp; 45. Fastener; 46. Clamping Block; 20. Front Wheel Assembly; 21. Front Wheel Support; 211. Handlebar Locking Wrench; 2111. Locking Protrusion; 2112. Wrench Part; 212. Pressure Plate; 213. Unlocking Notch; 22. Front Wheel; 23. Control Lever; 231. Pressure Connector; 232. Pressure Notch;

[0042] 5. Handle lever; 51. Handle adjustment assembly; 511. Operating part; 512. Linkage component; 513. Locking component; 514. Adjustment slot; 515. Reset elastic component; 516, 52. Handle orientation mechanism; 521. First guide key; 522. First keyway;

[0043] 6. Rotating mating assembly; 61. First annular body; 611. First annular sleeve body; 612. First flange end; 62. Second annular body; 621. Second annular sleeve body; 63. Rotating mating plane; 64. Fixed mating plane; 65. Rotating mating shoulder.

Detailed Implementation Methods

[0044] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0045] like Figures 1-15 As shown, this utility model includes a self-balancing scooter, comprising a frame 1. A front connecting seat 2 is provided at the front end of the frame 1, and a front wheel assembly 20 located at the lower part of the frame 1 is rotatably connected to the front connecting seat 2. A rear connecting seat 3 is provided at the rear end of the frame 1, and a rear wheel assembly 30 is rotatably connected to the rear connecting seat 3. The rear wheel assembly 30 is rotatably connected to the rear connecting seat 3 via a rear wheel axle and includes components such as a rear wheel 31. A seat connecting seat 4 is provided in the middle of the frame 1, and a seat assembly 40 is connected to the seat connecting seat 4. The front wheel assembly 20 includes a front wheel support 21, a front wheel 22, and a control lever 23. The front wheel 22 is rotatably connected to the front wheel support 21. The control lever 23 is relatively fixedly mounted on the upper part of the front wheel support 21. The control lever 23 has a hollow structure and is rotatably connected to the front connecting seat 2. The control lever 23 is connected to a handle bar 5. A handle adjustment assembly 51 is provided between the handle bar 5 and the control lever 23 to adjust the height of the handle bar 5 relative to the control lever 23. A handle orientation mechanism 52 is also provided between the handle bar 5 and the control lever 23 to prevent the handle bar 5 from rotating relative to the control lever 23 when adjusting its height.

[0046] In this application, the handle adjustment component 51 allows for easy and effortless independent adjustment of the handle height to accommodate children of different heights, thus expanding the product's applicability and lifespan. The handle orientation mechanism 52 ensures that when the handle lever 5 is adjusted relative to the control lever 23, it can only slide up and down axially without relative rotation, thereby avoiding the inconvenience caused by rotation during adjustment and ensuring smooth and accurate adjustment.

[0047] like Figures 3-7As shown, as a further technical solution of this embodiment, the handle adjustment assembly 51 includes an operating part 511, a linkage member 512, a driving member 516, and a locking member 513. The operating part 511 is located on the upper part of the handle bar 5 for easy operation by the user's hand. The middle part of the driving member 516 is rotatably connected to the handle bar 5, and the driving member 516 is used to drive the locking member 513 to extend or move inward relative to the handle bar 5. One end of the driving member 516 abuts against the operating part 511, and the other end is connected to one end of the linkage member 512. The locking member 513 is elastically telescopically located at the lower end of the handle bar 5 and connected to the other end of the linkage member 512. The linkage member 512 can be a steel cable located in the internal cavity of the handle bar 5. The control lever 23 is provided with a plurality of adjusting holes 514 for engaging and limiting the locking member 513. When the operating unit 511 is operated, the driving member 516 drives the linkage member 512 to move the locking member 513 to the unlocked position, allowing the handle 5 to slide relative to the control lever 23 for height adjustment. When the operating unit 511 is released, the linkage member 512 causes the locking member 513 to extend elastically and be placed in the locked position, so that the locking member 513 engages with one of the adjustment holes 514, thereby fixing the handle 5 at a preset height. The driving member 516 is located in the middle of the handle 5.

[0048] Specifically, refer to Figures 3-7 The locking element 513 can be a pin that can move within the internal cavity of the handle 5, and a reset elastic element 515 is provided behind it. The operating part 511 can be a button that can slide with the handle 5 to control the linkage element 512, and a reset elastic element 515 can also be provided below it.

[0049] Working principle: When the user presses down on the operating part 511, the linkage 512 overcomes the elastic force of the reset elastic element 515, causing the locking element 513 to move inward, disengaging it from the current adjustment slot 514 and placing it in the unlocked position. At this time, the handle 5 can slide freely relative to the control lever 23 for height adjustment. When the operating part 511 is released, the elastic force of the reset elastic element 515 pushes the locking element 513 outward, the operating part 511 resets, and the locking element 513 elastically extends into the adjustment slot 514 corresponding to the current height, placing it in the locked position, thereby locking the handle 5 at the current height. This operating mechanism is labor-saving and efficient, and can be operated with one hand.

[0050] like Figures 3-13As shown, as a further technical solution of this embodiment, the handle orientation mechanism 52 includes a first guide key 521 integrally formed on the inner side of the control rod 23 and extending axially, and a first keyway 522 integrally formed on the handle 5 and extending axially. The first guide key 521 and the first keyway 522 are slidably engaged. The handle 5 is integrally formed with the first keyway 522, which is convenient to process and reliably engages with the control rod 23. The handle 5 slides up and down along the length direction of the guide key 5 to adjust its height, avoiding circumferential rotation of the handle 5 during adjustment and use, so as to make the adjustment process smoother and the user experience better.

[0051] like Figures 3-13 As shown, as a further technical solution of this embodiment, in order to further enhance the stability of the handlebar 5 in the locked state and prevent possible slight shaking, the control lever 23 is also provided with an auxiliary locking mechanism for the handlebar 5. The mechanism includes: a clamping connecting seat 231 fixedly connected to the upper end of the control lever 23; a clamping notch 232 provided in the clamping connecting seat 231; a handlebar locking wrench 211 rotatably connected to one end of the clamping notch 232; a clamping plate 212 for clamping and locking the handlebar 5 provided on the upper part of the control lever 23 and located at the clamping notch 232; a locking protrusion 2111 formed on the hinge end of the handlebar locking wrench 211 and on the side opposite to the clamping plate 212; and a wrench portion 2112 formed on the free end of the handlebar locking wrench 211; and an unlocking notch 213 communicating with the clamping notch 232 to facilitate the action of the wrench portion 2112.

[0052] This application utilizes the handlebar locking wrench 211 to compress the clamping plate 212 during rotation, causing the clamping plate 212 to push against and hold the handlebar lever 5, generating greater frictional force, which serves to prevent wobbling and assist in locking.

[0053] like Figure 8 , Figure 9 As shown, as a further technical solution of this embodiment, the seat assembly 40 includes a seat 41 and a seat rod 42. The seat 41 is connected to the upper end of the seat rod 42, and the lower part of the seat rod 42 is slidably connected to the seat connecting seat 4. A seat orientation mechanism 43 is also provided between the seat assembly 40 and the seat connecting seat 4 to prevent the seat rod 42 from rotating relative to the seat connecting seat 4 when adjusting its height. A clamp 44 is fitted on the seat connecting seat 4 to lock the seat rod 42 relative to the seat connecting seat 4. The opening of the clamp 44 is provided with a fastener 45 that can lock the clamp 44. By locking the fastener 45, the clamp 44 can lock the seat rod 42 at the current height position. The locking mechanism of the clamp 44 and the fastener 45 in this application provides a locking force that is much greater than the lateral pressure of the single bolt used in the prior art, making it more reliable and durable. Specifically, the fastener 45 can be a common bolt.

[0054] Specifically, the seat orientation mechanism 43 includes a second guide key 431 integrally formed on the inner side wall of the seat connecting seat 4 and extending axially, and a second keyway 432 integrally formed on the outer side wall of the seat rod 42 and extending axially. The second guide key 431 and the second keyway 432 are slidably engaged to restrict the rotation of the seat rod 42. In this application, when the height of the seat rod 42 is adjusted relative to the seat connecting seat 4, the engagement of the second guide key 431 and the second keyway 432 can effectively guide the sliding, thereby restricting the rotation of the seat rod 42 relative to the seat connecting seat 4, resulting in smoother and more precise adjustment.

[0055] like Figure 8 , Figure 9 As shown, as a further technical solution of this embodiment, at least two clamping blocks 46 are spaced apart on the upper end of the seat connecting seat 4. An encircling space is formed between the clamping blocks 46 for the seat rod 42 to slide and engage. A clamp 44 is sleeved on the outside of the clamping blocks 46 to clamp and lock the seat rod 42 by clamping the clamping blocks 46. When the clamp 44 is locked, the two clamping blocks 46 can press against each other to clamp the seat rod 42. This one-piece molded structure has high strength and uniform force distribution, ensuring the stability of clamping; at the same time, it avoids excessive local stress on the seat rod 42 and extends its service life.

[0056] Specifically, both clamping blocks 46 extending towards the seat rod 42 each have an integrally connected baffle, which is a specific embodiment of the second guide key 431. The baffles corresponding to the two clamping blocks 46 are in clearance fit, and can be tightly fitted against the seat rod 42 under the locking action of the clamp 44, increasing the friction between the seat connecting seat 4 and the seat rod 42.

[0057] like Figure 5 , Figure 13 , Figure 14 , Figure 15As shown, as a further technical solution of this embodiment, a rotating engagement assembly 6 is provided between the front connecting seat 2 and the control lever 23 to improve the stability and smoothness of the steering of the front wheel 22. The rotating engagement assembly 6 includes a first ring 61 and a second ring 62. The first ring 61 is relatively fixedly connected to the control lever 23, and the second ring 62 is relatively fixedly connected to the front connecting seat 2. One end of the first ring 61 has a rotating engagement plane 63, and one end of the second ring 62 extends inward to form a rotating engagement shoulder 65. A fixed engagement plane 64 is formed on the rotating engagement shoulder 65 for sliding engagement with the rotating engagement plane 63. The diameter of the rotating engagement shoulder 65 is D1, and the inner diameter of the first ring 61 is D2, so 2mm>D1-D2>0. Furthermore, the outer diameter of the front connecting seat 2 is D3, and the outer diameter of the handlebar 5 is D4, satisfying the following condition: 25mm>D3-D4>5mm. This ensures that the outer diameter of the handle 5 is close to and coordinated with the outer diameter of the front connecting seat 2, avoiding large size differences that could affect the structural proportions. Furthermore, by determining the outer diameter of the front connecting seat 2, the outer diameter of the handle 5 can be maximized, ensuring that the handle 5 has good mechanical strength.

[0058] Specifically, both the first ring 61 and the second ring 62 are made by metal powder die casting, thus possessing excellent properties such as high precision, wear resistance, and self-lubrication. Both rotate smoothly, which also helps to increase the service life of the rotating mating component 6 and reduce maintenance costs.

[0059] like Figure 5 , Figure 14 , Figure 15 As shown, the first annular body 61 includes a first annular sleeve body 611, and a first flange end 612 is integrally formed and connected to the end of the first annular sleeve body 611 away from the rotational mating plane 63. The first annular sleeve body 611 and the first flange end 612 are arranged perpendicularly. The contact surface on the first annular body 61 that abuts against the second annular body 62 and has a rotational sliding function is the rotational mating plane 63, and the corresponding contact surface on the second annular body 62 is the fixed mating plane 64. The first annular sleeve body 611 and the second annular sleeve body 621 have a positioning mating function.

[0060] Specifically, in order to make the front wheel assembly 20 rotate smoothly, a rotational engagement assembly 6 is provided at the upper end of the front connecting seat 2 and the upper end of the control lever 23, and another rotational engagement assembly 6 is provided at the lower end of the front connecting seat 2 and the lower end of the control lever 23, and the two are rotated together.

[0061] In this application, the first annular body 61 and the second annular body 62 form a planar contact, which makes the rotational action more stable, effectively disperses the force, and significantly improves the overall strength and durability of the vehicle steering structure, making the vehicle more stable and reliable. In summary, this design has the advantages of simple structure, higher strength, and reliable operation.

[0062] Specifically, as a further improvement of this utility model: the frame 1 is made of lightweight aluminum-magnesium alloy, and a footrest 10 is integrally formed on the frame 1 and below the seat connecting seat 4, allowing the user to rest their feet on it when not using pedals, making it convenient to use. The aforementioned footrest 10, made of aluminum-magnesium alloy, significantly reduces the vehicle's weight while ensuring the overall structural strength and rigidity of the vehicle, thus improving portability and maneuverability.

[0063] The working principle of this utility model is as follows: The user can first loosen the fastener 45 of the seat connecting seat 4 according to their height, adjust the seat 41 up and down to a comfortable height, and then tighten it again. Then, by driving the operating part 511 on the handlebar, the user can adjust the handlebar lever 5 up and down to a suitable position and then release the lock. During adjustment, the keyway prevents rotation. The handlebar locking wrench 211 can also be used for auxiliary locking as needed. When riding, the handlebar lever 5 drives the front wheel assembly 20 to steer, and the user controls the speed by shifting their body weight forward and backward.

Claims

1. A self-balancing scooter, characterized in that... The vehicle includes a frame (1), with a front connecting seat (2) at the front end of the frame (1), the front connecting seat (2) being rotatably connected to a front wheel assembly (20) located at the lower part of the frame (1); a rear connecting seat (3) at the rear end of the frame (1), the rear connecting seat (3) being rotatably connected to a rear wheel assembly (30); a seat connecting seat (4) at the middle of the frame (1), the seat connecting seat (4) being connected to a seat assembly (40); the front wheel assembly (20) includes a front wheel support (21), a front wheel (22), and a control lever (23), the front wheel (22) being rotatably connected to the front wheel support (21). 21) The control lever (23) is fixedly mounted on the upper part of the front wheel support (21). The control lever (23) has a hollow structure and is rotatably connected to the front connecting seat (2). The control lever (23) is connected to a handle lever (5). A handle adjustment assembly (51) is provided between the handle lever (5) and the control lever (23) to adjust the height of the handle lever (5) relative to the control lever (23). A handle orientation mechanism (52) is also provided between the handle lever (5) and the control lever (23) to prevent the handle lever (5) from rotating relative to the control lever (23) when the height of the handle lever (5) is adjusted relative to the control lever (23).

2. A self-balancing scooter according to claim 1, characterized in that... The handle adjustment assembly (51) includes an operating part (511), a linkage (512), a driving part (516), and a locking part (513). The operating part (511) is located on the upper part of the handle (5). The middle part of the driving part (516) is rotatably connected to the handle (5). One end of the driving part (516) abuts against the operating part (511), and the other end is connected to one end of the linkage (512). The locking part (513) is elastically telescopically located at the lower end of the handle (5) and connected to the other end of the linkage (512). The control lever (23) The handle (5) is provided with multiple adjustment holes (514) for engaging and limiting the locking member (513); when the operating part (511) is operated, the driving member (516) is linked to the linkage member (512) to drive the locking member (513) to the unlock position, and the handle (5) can slide relative to the control rod (23) to adjust the height; when the operating part (511) is released, the locking member (513) extends elastically and is placed in the locked position, so that the locking member (513) engages with one of the adjustment holes (514), thereby fixing the handle (5) at a preset height.

3. A self-balancing scooter according to claim 1, characterized in that... The handle orientation mechanism (52) includes a first guide key (521) integrally formed on the inner side of the control rod (23) and extending axially, and a first keyway (522) integrally formed on the handle rod (5) and extending axially, wherein the first guide key (521) and the first keyway (522) are slidably engaged.

4. A self-balancing scooter according to claim 1, characterized in that... The upper end of the control lever (23) is fixedly connected to a clamping connecting seat (231). The clamping connecting seat (231) is provided with a clamping notch (232). One end of the clamping notch (232) is rotatably connected to a handlebar locking wrench (211). The upper part of the control lever (23) and located at the clamping notch (232) is provided with a clamping plate (212) that can clamp and lock the handlebar (5). The hinge end of the handlebar locking wrench (211) and the side opposite to the clamping plate (212) form a locking protrusion (2111). The free end of the handlebar locking wrench (211) forms a wrench part (2112). The clamping connecting seat (231) is provided with an unlocking notch (213) that communicates with the clamping notch (232) to facilitate the action of the wrench part (2112).

5. A self-balancing scooter according to claim 1, characterized in that... The seat assembly (40) includes a seat (41) and a seat rod (42). The seat (41) is connected to the upper end of the seat rod (42). The lower part of the seat rod (42) is slidably connected to the seat connecting seat (4). A seat orientation mechanism (43) is also provided between the seat assembly (40) and the seat connecting seat (4) to prevent the seat rod (42) from rotating relative to the seat connecting seat (4) when the height of the seat rod (42) is adjusted relative to the seat connecting seat (4). A clamp (44) is fitted on the seat connecting seat (4) to lock the seat rod (42) relative to the seat connecting seat (4). The opening of the clamp (44) is provided with a fastener (45) that can lock the clamp (44). By locking the fastener (45), the clamp (44) can lock the seat rod (42) at the current height position.

6. A self-balancing scooter according to claim 5, characterized in that... The seat orientation mechanism (43) includes a second guide key (431) integrally formed on the inner side wall of the seat connecting seat (4) and extending axially, and a second keyway (432) integrally formed on the outer side wall of the seat rod (42) and extending axially. The second guide key (431) and the second keyway (432) are slidably engaged to restrict the rotation of the seat rod (42).

7. A self-balancing scooter according to claim 5, characterized in that... At least two clamping blocks (46) are spaced apart on the upper end of the seat connecting seat (4), and an encircling space is formed between the clamping blocks (46) for the seat rod (42) to slide and engage. The clamp (44) is sleeved on the outside of the clamping blocks (46) to clamp and lock the seat rod (42) by clamping the clamping blocks (46).

8. A self-balancing scooter according to claim 1, characterized in that... A rotating engagement assembly (6) is provided between the front connecting seat (2) and the control rod (23). The rotating engagement assembly (6) includes a first ring (61) and a second ring (62). The first ring (61) is fixedly connected to the control rod (23), and the second ring (62) is fixedly connected to the front connecting seat (2). One end of the first ring (61) has a rotating engagement plane (63), and one end of the second ring (62) extends inward to form a rotating engagement shoulder (65). A fixed engagement plane (64) is formed on the rotating engagement shoulder (65) for sliding engagement with the rotating engagement plane (63). The diameter of the rotating engagement shoulder (65) is D1, and the inner diameter of the first ring (61) is D2. Therefore, 2mm>D1-D2>0.

9. A self-balancing scooter according to claim 8, characterized in that... The outer diameter of the front connecting seat (2) is D3, and the outer diameter of the handle (5) is D4, 25mm>D3-D4>5mm.

10. A self-balancing scooter according to claim 9, characterized in that... The frame (1) is made of lightweight aluminum-magnesium alloy, and a footrest (10) is integrally formed on the frame (1) and below the seat connecting seat (4).

Images