Angle-adjustable structure and mobility scooter

Abstract

This application provides an angle-adjustable structure and a mobility scooter. The angle-adjustable structure includes a first rotating seat, a second rotating seat, a first elastic element, and a locking mechanism. The first rotating seat has a first toothed surface and a first mounting groove on its first mounting surface, and the second rotating seat has a second toothed surface and a second mounting groove on its third mounting surface. The first and third mounting surfaces are opposite to each other. The locking mechanism connects the first rotating seat and / or the second rotating seat, and is used to lock or unlock the first and second rotating seats. The first elastic element is installed in the first and second mounting grooves. When the first toothed surface rotates relative to the second toothed surface, the first elastic element generates a damping force opposite to the direction of rotation. The first elastic element can generate a damping force opposite to the direction of rotation, facilitating precise control of the rotation angle by the user.

Description

Technical Field

[0001] This application relates to the field of mobility scooters, specifically to an angle-adjustable structure and a mobility scooter. Background Technology

[0002] With the development of mechanical technology, the existing angle adjustment structure between the front and body of folding mobility scooters typically uses locking pins to fix or unlock the rotating seats that need adjustment. During adjustment, the rotation between the two rotating seats is relatively free, without any other resistance. This leads to a situation where, when this type of angle adjustment structure is used to connect the front and body, the relative rotation speed between the two connecting rods of the front and body is too fast during adjustment, making it difficult to accurately adjust the angle and resulting in a poor user experience. Therefore, designing an angle adjustment structure that can accurately adjust multiple angles and provides a better user experience has become a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0003] In view of this, embodiments of this application provide an angle adjustment structure and a mobility scooter, so as to achieve a precise multi-angle adjustment and a better operating experience.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] This application provides an angle adjustment structure, including a first rotating seat, a second rotating seat, a first elastic element, and a locking mechanism, wherein:

[0006] The first mounting surface of the first rotating seat is provided with a first toothed surface and a first mounting groove, and the third mounting surface of the second rotating seat is provided with a second toothed surface and a second mounting groove; the first mounting surface and the third mounting surface are arranged opposite to each other, and the shape and size of the first toothed surface and the second toothed surface are adapted to each other;

[0007] The locking mechanism connects the first rotating seat and / or the second rotating seat, and is used to lock or unlock the first rotating seat and the second rotating seat, and when the first rotating seat and the second rotating seat are unlocked, drive the first rotating seat and the second rotating seat to generate relative movement, so that the first tooth surface and the second tooth surface rotate relative to each other around the rotation axis.

[0008] The first elastic element is installed in the first mounting groove and the second mounting groove; when the first tooth surface and the second tooth surface rotate relative to each other, the first elastic element generates a damping force opposite to the direction of rotation.

[0009] This application embodiment also provides a mobility scooter, including: handlebars, a body, and the angle adjustment structure described above;

[0010] The faucet is fixedly connected to the first rotating seat, and the vehicle body is fixedly connected to the second rotating seat; or, the faucet is fixedly connected to the second rotating seat, and the vehicle body is fixedly connected to the first rotating seat.

[0011] The angle adjustment structure provided in this application includes a first rotating seat with a first toothed surface and a first mounting groove, a second rotating seat with a second toothed surface and a second mounting groove, a first elastic element, and a locking mechanism. The locking mechanism connects the first rotating seat and / or the second rotating seat to control the locking or unlocking of the first and second rotating seats, and drives the first and second toothed surfaces to rotate relative to each other around a rotation axis when unlocked. The first elastic element, installed in the first and second mounting grooves, generates a damping force opposite to the direction of rotation as the first and second toothed surfaces rotate relative to each other around the rotation axis.

[0012] In this way, by adding a first elastic element between the two rotating seats, the first elastic element can generate a damping force opposite to the direction of rotation when the first and second rotating seats rotate relative to each other, thereby slowing down the rotation speed of the first and second rotating seats when they rotate relative to each other. This avoids excessive rotation speed without increasing the complexity of operation, allowing the user to slowly rotate the first or second rotating seat when adjusting the angle, making it easier for the user to accurately control the rotation angle. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0014] Figure 1 A perspective view of the angle adjustment structure provided in the embodiments of this application;

[0015] Figure 2 A cross-sectional view of the angle adjustment structure provided in the embodiments of this application;

[0016] Figure 3 A perspective view of the mobility scooter provided in the embodiments of this application.

[0017] Figure descriptions: 10-First rotating seat, 11-First toothed surface, 12-First mounting groove, 20-Second rotating seat, 21-Second toothed surface, 22-Second mounting groove, 23-Third mounting groove, 30-First elastic element, 31-Friction element, 32-Second elastic element, 40-Locking mechanism, 41-Handle, 411-Grip part, 412-Cam part, 42-Connecting rod, 43-Fixing element, 44-Fourth mounting groove, 61-Head, 62-Angle adjustment structure, 63-Vehicle body. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment".

[0020] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0021] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0022] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0023] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0024] The inventors of this application have discovered that the existing angle adjustment structure is cumbersome and complex to operate. The relative rotation speed of the rotating seat is relatively fast during adjustment, which can easily cause accidental injury when adjusting the angle. Moreover, the fast rotation speed makes it difficult to adjust the angle accurately.

[0025] The internal structure of the angle adjustment structure provided in this application embodiment is as follows: Figure 1-2 As shown, Figure 2 The angle adjustment structure provided in the embodiments of this application is along Figure 1 A cross-sectional view taken from plane A. The angle adjustment structure provided in this application embodiment includes: a first rotating seat 10, a second rotating seat 20, a first elastic element 30, and a locking mechanism 40.

[0026] The first mounting surface (not shown) of the first rotating seat 10 is provided with a first toothed surface 11 and a first mounting groove 12, and the third mounting surface (not shown) of the second rotating seat 20 is provided with a second toothed surface 21 and a second mounting groove 22; the first mounting surface and the third mounting surface are arranged opposite to each other, and the first toothed surface 11 and the second toothed surface 21 are adapted in shape and size.

[0027] It should be noted that the first rotating seat 10 and the second rotating seat 20 are used to connect two other structures whose relative angles need to be adjusted. The relative angles of the other structures can be adjusted by adjusting the relative angles of the first rotating seat 10 and the second rotating seat 20.

[0028] In some embodiments, the first tooth surface 11 and the second tooth surface 21 are tooth surfaces formed by tooth-like structures formed on the first mounting surface and the third mounting surface; or they are independent toothed parts mounted on the first mounting surface and the third mounting surface. By setting the first tooth surface 11 and the second tooth surface 21 as independent toothed parts, the first tooth surface 11 and the second tooth surface 21 on the first mounting surface and the third mounting surface can be replaced, avoiding the negative impact on the angle adjustment structure after the first tooth surface 11 and the second tooth surface 21 are worn.

[0029] The locking mechanism 40 connects the first rotating seat 10 and / or the second rotating seat 20, and is used to lock or unlock the first rotating seat 10 and the second rotating seat 20, and when the first rotating seat 10 and the second rotating seat 20 are unlocked, drive the first rotating seat 10 and the second rotating seat 20 to generate relative movement, so that the first tooth surface 11 and the second tooth surface 21 rotate relative to each other around the rotation axis (not shown).

[0030] It should be noted that in some specific embodiments, the locking mechanism 40 is fixedly connected to one of the first rotating seat 10 or the second rotating seat 20. Thus, when the first rotating seat 10 and the second rotating seat 20 are rotated, the relative angle between one of the rotating seats and the locking mechanism 40 can remain unchanged, while the relative angle between the other rotating seat and the locking mechanism 40 changes, thereby realizing the relative rotation of the first tooth surface 11 and the second tooth surface 21 around the rotation axis.

[0031] The first elastic element 30 is installed in the first mounting groove 12 and the second mounting groove 22; when the first tooth surface 11 and the second tooth surface 21 rotate relative to each other, the first elastic element 30 generates a damping force opposite to the direction of rotation.

[0032] In an alternative embodiment, the first elastic element 30 is further configured to generate an elastic force that pushes the first mounting surface away from the third mounting surface, so as to ensure that when the lock is released, the first elastic element 30 is pressed against the first rotating seat 10 and / or the second rotating seat 20 and there is pressure.

[0033] In this way, by adding a first elastic element 30 between the two rotating seats, when the first rotating seat 10 and the second rotating seat 20 rotate relative to each other, the first elastic element 30 can generate a damping force opposite to the direction of rotation, thereby slowing down the rotation speed of the first rotating seat 10 and the second rotating seat 20 when they rotate relative to each other. This avoids excessive rotation speed while ensuring simple operation, allowing the user to slowly rotate the first rotating seat 10 or the second rotating seat 20 when adjusting the angle, making it easier for the user to accurately control the rotation angle.

[0034] Furthermore, such as Figure 2 As shown, in one alternative implementation, the first elastic element 30 includes a wave spring or a plurality of stacked wave springs.

[0035] It should be noted that a wave spring is a compression spring made of a thin, wavy metal strip. The wave spring's "wavy" structure provides stable elastic force within a very short compression stroke, unlike traditional coil springs which rely on a longer deformation space. This allows it to simultaneously perform both buffering and damping functions within narrow assembly gaps, avoiding damping failure due to space constraints.

[0036] Since wave springs are typically thin, a single wave spring may not provide sufficient elastic force. Therefore, multiple wave springs can be stacked. In this case, the stacked wave springs can be considered as a whole, working together to generate a damping force opposite to the direction of rotation when the first tooth surface 11 and the second tooth surface 21 rotate relative to each other. The number of stacked wave springs depends on the magnitude of the damping force required by the angle adjustment structure, and can be two, three, four, or even more.

[0037] It should be noted that regardless of the number of wave springs used, it is necessary to ensure that when the first rotating seat 10 and the second rotating seat 20 are unlocked, the first tooth surface 11 and the second tooth surface 21 are completely separated to facilitate angle adjustment by the user. Furthermore, when the first rotating seat 10 and the second rotating seat 20 are unlocked, it is preferable that the wave springs remain compressed, ensuring that the first rotating seat 10 and the second rotating seat 20 do not separate too far, maintaining a position where they can rotate smoothly relative to each other, or slightly further away from that position.

[0038] Furthermore, such as Figure 2 As shown, in an optional implementation, the angle adjustment mechanism further includes a friction element 31, which is installed in the first mounting groove 12 and sandwiched between the bottom wall of the first mounting groove 12 and the first elastic element 30, and / or, the friction element 31 is installed in the second mounting groove 22 and sandwiched between the bottom wall of the second mounting groove 22 and the first elastic element 30.

[0039] Specifically, in one particular embodiment, such as Figure 2 As shown, a friction element 31 is also provided between the bottom wall of the first mounting groove 12 and the first elastic element 30. The friction element 31 serves two purposes: firstly, it minimizes wear on the first rotating seat 10 and the first elastic element 30 during use; secondly, by abutting against the first elastic element 30 and generating friction, it can, to some extent, limit the movement of the first elastic element 30. The specific shape, size, and material of the friction element 31 are not limited and can be reasonably selected according to actual application requirements. For example, the friction element 31 can be a rubber pad, a silicone pad, or a nylon pad, etc.

[0040] Furthermore, when the friction element 31 is made of an elastic material, the elastic force generated by the friction element 31 and the first elastic element 30 can push the first mounting surface away from the third mounting surface, so that when the locking mechanism 40 is unlocked, the first tooth surface 11 and the second tooth surface 21 will have a relative distance, which facilitates the two to rotate again and avoids the first tooth surface 11 and the second tooth surface 21 from colliding and hindering the rotation or even damaging the first tooth surface 11 or the second tooth surface 21 during rotation.

[0041] Furthermore, in order to reduce wear on the first rotating seat 10, the first elastic element 30 and the second rotating seat 20 during use, and to better limit the first elastic element 30, it is preferable that the friction element 31 is simultaneously provided in the first mounting groove 12 and the second mounting groove 22.

[0042] Furthermore, such as Figure 2 As shown, in one alternative implementation, the locking mechanism 40 includes a handle 41 and a connecting rod 42. The handle 41 includes a gripping portion 411 and a cam portion 412 connected together, the cam portion 412 being disposed toward a second mounting surface (not shown), and the cam portion 412 being rotatably connected to a first end of the connecting rod 42.

[0043] It should be noted that the cam structure usually has an irregular curve or surface. When the cam part 412 rotates around the first end of the connecting rod 42, the cam part 412 pushes the first rotating seat 10 to move, so that the distance between the first rotating seat 10 and the first end of the connecting rod 42 changes, thereby changing the distance between the first mounting surface of the first rotating seat 10 and the third mounting surface of the second rotating seat 20, thereby locking or unlocking the first rotating seat 10 and the second rotating seat 20.

[0044] Furthermore, such as Figure 2 As shown, Figure 2 As shown, in one specific embodiment, the cam portion 412 is a rounded rectangle. Thus, during the locking process of the first rotating seat 10 and the second rotating seat 20, the distance between the cam portion 412 and the rotating seat changes from the short side to the long side, causing the distance between the cam portion 412 and the second rotating seat 20 to first increase and then decrease. This ensures that the handle 41 will not spring open when pressed, thus ensuring operational safety.

[0045] Furthermore, such as Figure 2 As shown, in an optional implementation, the angle adjustment structure further includes a second elastic member 32 having a third through hole (not shown); the second elastic member 32 is sleeved on the outside of the connecting rod 42 and clamped between the cam portion 412 and the second mounting surface.

[0046] Specifically, such as Figure 2 As shown, the second elastic element 32 is sleeved on the outside of the connecting rod 42 and sandwiched between the cam portion 412 and the second mounting surface. When the cam portion 412 rotates, the cam portion 412 squeezes the second elastic element 32 and applies pressure to the second elastic element 32, which then transmits the pressure to the second mounting surface and pushes the first rotating seat 10 to move.

[0047] By providing the second elastic element 32, the pressure applied by the cam portion 412 to the second mounting surface can be buffered, preventing excessive pressure from the cam portion 412 on the second mounting surface, which could cause deformation on the second mounting surface of the first rotating seat 10. Furthermore, without the second elastic element 32, when the first rotating seat 10 and the second rotating seat 20 are unlocked, the gap between the cam portion 412 and the second mounting surface may be large. This would result in no pressure between the first elastic element 30 and the first and / or third mounting surfaces after the first elastic element 30 pushes the first mounting surface away from the third mounting surface, thus preventing the first elastic element 30 from generating damping force. However, with the addition of the second elastic element 32, the second elastic element 32 can provide the elastic force to push the first mounting surface closer to the third mounting surface, thereby ensuring that the first elastic element 30 can generate damping force.

[0048] Furthermore, such as Figure 2 As shown, in one optional implementation, a third mounting groove 23 is provided on the second mounting surface, and the second elastic element 32 is located in the third mounting groove 23. This allows the second elastic element 32 to be installed while maintaining the overall thickness of the angle adjustment structure. Simultaneously, the concealed design provides some protection for the second elastic element 32, preventing it from being worn during use.

[0049] Furthermore, such as Figure 2 As shown, in one alternative implementation, the second elastic element 32 is a disc spring. The disc spring is a ring-shaped thin-walled spring, its shape approximating a flattened cone, thicker in the center and thinner at the edges. When the disc spring is subjected to axial pressure, the disc shape flattens, thereby generating an elastic force. The disc spring has higher strength and a longer lifespan, thus improving the durability of the angle adjustment structure.

[0050] Furthermore, in an optional implementation, the first rotating seat 10 has a first through hole (not shown), which penetrates the first mounting surface and a second mounting surface opposite to the first mounting surface. The second rotating seat 20 has a second through hole (not shown), which penetrates the third mounting surface and a fourth mounting surface opposite to the third mounting surface (not shown). The second end of the connecting rod 42 is mounted on the second rotating seat 20, and the connecting rod 42 passes through the first through hole and the second through hole in sequence.

[0051] like Figure 2As shown, the first rotating seat 10 and the second rotating seat 20 are sleeved on the connecting rod 42. When the first rotating seat 10 and the second rotating seat 20 are unlocked, both the first rotating seat 10 and the second rotating seat 20 can rotate around the connecting rod 42. By rotating the first rotating seat 10 and the second rotating seat 20 around the connecting rod 42 by different angles, the relative rotation between the first rotating seat 10 and the second rotating seat 20 can be achieved, thereby adjusting the angle. Through the handle 41 sleeved on the connecting rod 42 and having a cam portion 412, the locking and rotation of the first rotating seat 10 and the second rotating seat 20 can be achieved simultaneously through a relatively simple structural design.

[0052] Furthermore, in an alternative implementation, the second end of the link 42 and the second rotating seat 20 have a matching limiting design to prevent the second rotating seat 20 from falling off the link 42.

[0053] Furthermore, such as Figure 2 As shown, in an optional implementation, the locking mechanism 40 further includes a fixing member 43, and a fourth mounting groove 44 is provided on the fourth mounting surface, with the fixing member 43 located in the fourth mounting groove 44.

[0054] Specifically, such as Figure 2 As shown, in one specific implementation, the fixing member 43 is disposed at the second end of the connecting rod 42, fixing the connecting rod 42 to the second rotating seat 20. By fixing the connecting rod 42 to the second rotating seat 20, the connecting rod 42 will not rotate with the first rotating seat 10 when the user rotates the first rotating seat 10, preventing the handle 41 from rotating with the first rotating seat 10 to an unusable angle, thus affecting the ease of operation. The fourth mounting groove 44 provides a certain degree of protection for the fixing member 43, preventing it from being worn during use, and the groove design can reduce the overall thickness of the angle adjustment structure.

[0055] Furthermore, such as Figure 2 As shown, in one optional implementation, on the first mounting surface, the first through hole, the first mounting groove 12, and the first tooth surface 11 are arranged sequentially from the inside to the outside; on the third mounting surface, the second through hole, the second mounting groove 22, and the second tooth surface 21 are arranged sequentially from the inside to the outside. This not only ensures structural strength but also allows for a larger tooth size by placing the tooth surface on the outermost side of the first mounting surface, facilitating machining.

[0056] Furthermore, such as Figure 2 As shown, in one optional implementation, both the first tooth surface 11 and the second tooth surface 21 are annular rings with circular outer edges. The first tooth surface 11 and the second tooth surface 21 have the same number of teeth, and the ratio of the outer diameter of the first tooth surface 11 and the second tooth surface 21 to the number of teeth is greater than or equal to 0.5 and less than or equal to 1, thereby ensuring that it is not only easy to process, but also provides a better user experience when adjusting the angle.

[0057] This application also provides a mobility scooter, such as... Figure 3 As shown, it includes: a head 61, a vehicle body 63, and an angle adjustment structure 62 of any of the aforementioned components.

[0058] The faucet 61 is fixedly connected to the first rotating seat 10, and the vehicle body 63 is fixedly connected to the second rotating seat 20; or, the faucet 61 is fixedly connected to the second rotating seat 20, and the vehicle body 63 is fixedly connected to the first rotating seat 10.

[0059] The angle adjustment structure 62 connects the handlebars and the vehicle body of the mobility scooter. A first elastic element 30 can be added between the two rotating seats of the angle adjustment structure. When the first rotating seat 10 and the second rotating seat 20 rotate relative to each other, the first elastic element 30 can generate a damping force opposite to the direction of rotation, thereby slowing down the rotation speed of the first rotating seat 10 and the second rotating seat 20 when they rotate relative to each other. This avoids excessive rotation speed without increasing the complexity of operation, allowing the user to slowly rotate the first rotating seat 10 or the second rotating seat 20 when adjusting the angle, making it easier for the user to accurately control the rotation angle and adjust the angle of the handlebars 61 relative to the vehicle body 63.

[0060] While the embodiments disclosed above are described in this application, this application is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of this application; therefore, the scope of protection of this application should be determined by the scope defined in the claims.

Claims

1. An angle adjustment structure characterized by, It includes a first rotating seat, a second rotating seat, a first elastic element, and a locking mechanism, wherein: The first mounting surface of the first rotating seat is provided with a first toothed surface and a first mounting groove, and the third mounting surface of the second rotating seat is provided with a second toothed surface and a second mounting groove; the first mounting surface and the third mounting surface are arranged opposite to each other, and the shape and size of the first toothed surface and the second toothed surface are adapted to each other; The locking mechanism connects the first rotating seat and / or the second rotating seat, and is used to lock or unlock the first rotating seat and the second rotating seat, and when the first rotating seat and the second rotating seat are unlocked, drive the first rotating seat and the second rotating seat to generate relative movement, so that the first tooth surface and the second tooth surface rotate relative to each other around the rotation axis. The first elastic element is installed in the first mounting groove and the second mounting groove; when the first tooth surface and the second tooth surface rotate relative to each other, the first elastic element generates a damping force opposite to the direction of rotation.

2. The angle adjustment structure according to claim 1, wherein The first elastic element includes a wave spring or multiple stacked wave springs; when the first rotating seat and the second rotating seat are unlocked, the wave spring is still in a compressed state.

3. The angle adjustment structure according to claim 1, wherein The angle adjustment structure further includes a friction element, which is installed in the first mounting groove and sandwiched between the bottom wall of the first mounting groove and the first elastic element, and / or, the friction element is installed in the second mounting groove and sandwiched between the bottom wall of the second mounting groove and the first elastic element.

4. The angle adjustment structure according to claim 1, wherein The locking mechanism includes a handle and a connecting rod; The first rotating seat has a first through hole, which penetrates the first mounting surface and a second mounting surface opposite to the first mounting surface; the second rotating seat has a second through hole, which penetrates the third mounting surface and a fourth mounting surface opposite to the third mounting surface; The handle includes a gripping part and a cam part connected together. The cam part is disposed facing the second mounting surface and is rotatably connected to the first end of the connecting rod. The second end of the connecting rod is mounted on the second rotating seat, and the connecting rod passes through the first through hole and the second through hole in sequence.

5. The angle adjustment structure according to claim 4, wherein The angle adjustment structure further includes a second elastic element with a third through hole; the second elastic element is sleeved on the outside of the connecting rod and sandwiched between the cam portion and the second mounting surface.

6. The angle adjustment structure according to claim 5, wherein The second mounting surface is provided with a third mounting groove, and the second elastic element is located in the third mounting groove; the second elastic element is a disc spring.

7. The angle adjustment structure according to claim 4, wherein The locking mechanism further includes a fixing member, and a fourth mounting groove is provided on the fourth mounting surface, with the fixing member located in the fourth mounting groove.

8. The angle adjustment structure according to claim 4, wherein On the first mounting surface, the first through hole, the first mounting groove, and the first toothed surface are arranged sequentially from the inside to the outside; on the third mounting surface, the second through hole, the second mounting groove, and the second toothed surface are arranged sequentially from the inside to the outside.

9. The angle adjustment structure according to claim 1, wherein Both the first tooth surface and the second tooth surface are annular with circular outer edges, and the number of teeth on the first tooth surface and the second tooth surface is the same; the ratio of the outer diameter of the first tooth surface to the number of teeth on the second tooth surface is greater than or equal to 0.5 and less than or equal to 1.

10. A scooter, characterized in that include: The hood, the vehicle body, and the angle adjustment structure as described in any one of claims 1-9; The faucet is fixedly connected to the first rotating seat, and the vehicle body is fixedly connected to the second rotating seat; or, the faucet is fixedly connected to the second rotating seat, and the vehicle body is fixedly connected to the first rotating seat.

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