Frame components and scooters

Abstract

This application provides a frame assembly and a scooter, relating to the field of scooter technology. The frame assembly includes a front frame and a main pedal; a second folding mechanism is provided between the front frame and the main pedal; an abutment is provided on the main pedal facing the frame, the main pedal having a first abutment surface, and the abutment having a second abutment surface and a third abutment surface; the front frame has a first surface and a second surface on the side facing the main pedal; the angle between the first surface and the second surface is adapted to the angle between the first abutment surface and the second abutment surface; when the second folding mechanism is unfolded, the first surface abuts against the first abutment surface and the second surface abuts against the second abutment surface; when the second folding mechanism is folded, the main pedal moves forward along a preset travel direction and folds towards the front frame, and the third abutment surface abuts against the bottom surface of the front frame facing the ground. The folding of the front frame and the main pedal is achieved through the second folding mechanism, and in the folded state, the abutment abuts against the front frame, improving the stability of the folded state.

Description

Technical Field

[0001] This application relates to the field of skateboard technology, and more particularly to a frame assembly and a skateboard. Background Technology

[0002] Currently, electric scooters, electric bicycles, and other means of transportation have become an indispensable part of people's daily lives.

[0003] For ease of use, electric scooters are foldable. Typically, existing scooters use single-point or two-point folding, such as folding the front and rear frames, to achieve a basic reduction in length. Rotation is usually achieved by bolts running through the front and rear frames to create a rotatable connection.

[0004] However, the aforementioned scooters are only secured with bolts after folding, resulting in poor stability in the folded state and insufficient connection strength. Summary of the Invention

[0005] This application provides a frame assembly and a scooter, which achieves the folding of the front frame and the main pedal through a second folding mechanism. In the folded state, the abutment part abuts against the front frame, thereby improving the stability of the folded state.

[0006] In a first aspect, embodiments of this application provide a vehicle frame assembly, including a front frame and a main step pedal arranged sequentially from front to back along a preset travel direction; a second folding mechanism is provided between the front frame and the main step pedal.

[0007] The main pedal is provided with an abutment on the front frame, the main pedal has a first abutment surface, and the abutment has a second abutment surface and a third abutment surface;

[0008] The front frame has a first surface and a second surface that intersect on the side facing the main step; the angle between the first surface and the second surface is adapted to the angle between the first abutment surface and the second abutment surface;

[0009] When the second folding mechanism is unfolded, the main pedal is located behind the second folding mechanism along the preset travel direction, with the first surface abutting the first abutting surface and the second surface abutting the second abutting surface;

[0010] When the second folding mechanism is folded, the main pedal moves forward along the preset travel direction and folds toward the front frame so that it is located in front of the second folding mechanism, and the third contact surface abuts against the bottom surface of the front frame facing the ground.

[0011] The frame assembly provided in this embodiment, when unfolded, achieves precise positioning of the main pedal and the front frame through double contact by the first surface contacting the first contact surface and the second surface contacting the second contact surface, thus avoiding relative displacement or swaying between the two during driving, ensuring the connection strength of the frame assembly when folded, and improving the structural stability of the frame assembly.

[0012] Furthermore, the double contact method increases the contact area between the main pedal and the front frame, dispersing the stress caused by the user's weight and road impact during riding, avoiding excessive local stress that could damage components, extending the service life of the frame components, and improving the stability of the scooter during riding, thus ensuring the user's safety.

[0013] Understandably, the folding mechanism enables the front frame and main pedal to fold. The main pedal folds forward along the preset travel direction to the front of the second folding mechanism. Combined with the folding of the handlebar assembly around the head tube, the frame assembly can be reduced in both length and height. This solves the problem that single-point or two-point folding in related technologies can only shorten the length, further reducing the overall volume of the scooter after folding. This makes it easier to put into small spaces such as backpacks and car trunks, making it convenient to store and carry.

[0014] It should be noted that after folding, the third contact surface of the abutment abuts against the bottom surface of the front frame, achieving precise positioning of the folded state. This prevents relative wobbling between the main pedal and the front frame after folding, and avoids accidental unfolding, thereby improving the structural stability after folding and ensuring safety during carrying and storage.

[0015] In one possible implementation, the sum of the angle between the first and second surfaces and the angle between the first and second contact surfaces is 360°.

[0016] In this embodiment, since the sum of the angle between the first and second surfaces and the angle between the first and second abutting surfaces is 360°, when the main pedal and the front frame are unfolded into place by the second folding mechanism, the two intersecting angles form a perfect complementary fit, so that the first surface of the front frame can abut against the first abutting surface of the main pedal, and the second surface of the front frame can abut against the second abutting surface of the abutting member, ensuring that there is no gap or offset between the front frame and the main pedal.

[0017] Specifically, the first surface of the front frame can abut against the first contact surface of the main pedal, and the second surface of the front frame can abut against the second contact surface of the abutment component. This 360° cooperation between the two contact surfaces ensures precise positioning of the main pedal and the front frame, preventing relative swaying during riding. Simultaneously, the mating contact structure forms a stable support surface, bearing the user's weight and riding impacts, and working in conjunction with other components of the frame assembly to achieve stable riding of the scooter.

[0018] It should be noted that, compared to the fit between ordinary angles, the 360° angle ensures that the first contact surface and the second contact surface of the front frame and the main pedal are in close contact, avoiding problems such as gaps in fit and positioning offset. The relative position of the main pedal and the front frame is further fixed, effectively preventing the frame from shaking due to positioning deviation during driving and improving the structural strength of the frame components.

[0019] Furthermore, the sum of the angles at which the first surface abuts against the first contact surface and the second surface abuts against the second contact surface is 360°, which can further increase the contact area. This allows the stress generated by the user's weight and the impact force of the road surface during riding to be evenly distributed to multiple contact surfaces, avoiding component fatigue, deformation or damage caused by localized stress concentration, extending the service life of the frame components, improving the stability of the scooter while riding, and reducing riding safety hazards.

[0020] In one possible implementation, the third contact surface is set parallel to the bottom surface.

[0021] In this embodiment, when the user needs to store the scooter, the main pedal is flipped and folded towards the ground. Since the third contact surface is parallel to the ground of the front frame, when the two move towards each other, it can ensure that the main pedal is equidistant from the bottom surface of the front frame in the folding trajectory, avoiding lateral compression or edge collision between the two in the folding path, that is, interference occurs during the flipping and folding of the main pedal towards the front frame, thus achieving a smooth and non-jamming folding action.

[0022] When the main pedal is rotated to the preset angle, the third abutment surface of the abutment piece is fully in contact with the bottom surface of the front frame facing the ground. Because the third abutment surface is parallel to the bottom surface, it fits tightly against the ground, increasing the contact area between the third abutment surface and the ground, thus forming a stable support surface and facilitating locking the main pedal in the folded position. In this state, the overall size of the vehicle body is significantly reduced, and the structure is stable with no relative swaying.

[0023] It should be noted that the third contact surface is parallel to the bottom surface, and this parallel contact provides stable motion guidance during folding. Compared to non-parallel or irregular contact in related technologies, the parallel structure effectively avoids interference between the front frame and the main pedal during the folding path (such as jamming, edge wear, or collision), ensuring smooth folding operation, making the folded vehicle body profile more compact, extending the mechanical life of the folding structure and related components, and improving the user's operating feel and smoothness.

[0024] In one possible implementation, the outer side of the front frame and the outer side of the abutment are located on the same plane along a preset travel direction.

[0025] In this embodiment, when the frame assembly is in the unfolded state, the front frame precisely abuts against the main pedal through the second folding mechanism, so that the first surface of the front frame abuts against the first abutting surface of the main pedal, and the second surface of the front frame abuts against the second abutting surface of the abutting member. At this time, along the preset travel direction of the scooter, that is, the front-to-back extension direction of the vehicle body, the outer side of the front frame and the outer side of the abutting member on the main pedal are naturally aligned to form the same plane, without any concave or convex misalignment or step protrusion, ensuring the flatness of the side of the vehicle body in the unfolded state.

[0026] Furthermore, after switching from the unfolded state to the folded state, the main pedal is controlled to rotate and fold forward along the preset travel direction toward the front frame until the third contact surface of the contact piece is in close contact with the bottom surface of the front frame.

[0027] During this folding process, since the outer side of the front frame and the outer side of the abutment are already on the same plane when unfolded, the outer sides of the two always remain aligned during folding to avoid one side protruding and the other side sinking. After folding, the outer sides of the two are always in a close and aligned state, forming a flat side profile. This avoids bulging and jamming caused by misalignment of the outer sides after folding, ensuring smooth folding action and ensuring that the front frame and main pedal are flat after folding.

[0028] It should be noted that aligning the outer side with the preset travel direction can prevent misalignment and interference between the outer side of the front frame and the outer side of the connecting parts during folding, such as collisions between protruding parts or jamming of recessed parts. This ensures a smooth folding trajectory when the main pedal faces the front frame, without any jamming or wear. At the same time, it ensures that the side of the vehicle remains flat during the folding process, avoiding irregular protrusions due to component misalignment, thus improving the smoothness and feel of the user's folding operation.

[0029] The flat folding structure further reduces the overall space occupied after folding, avoiding the inability to smoothly put into small spaces such as backpacks and car trunks due to side protrusions. At the same time, when carrying it in public places such as subways and buses, the flat sides will not snag on clothes or take up extra space, further improving the convenience of carrying it.

[0030] In one possible implementation, the front frame and the main pedal are rotatably connected via a second pivot.

[0031] The second pivot is close to the bottom surface and far from the first surface.

[0032] In this embodiment, the front frame and the main pedal are rotatably connected through the second pivot. When the user needs to fold and store the vehicle, the second folding mechanism is operated to unlock the vehicle, releasing the front frame from the fixed connection between the front frame and the main pedal. The main pedal then rotates around the second pivot to perform subsequent folding actions.

[0033] When folding and storing, because the second pivot is far from the first side, the movement trajectory of the main pedal avoids the contact part of the front frame, the handlebar assembly, and the front wheel when the main pedal is rotated, thus avoiding interference or jamming of components during rotation.

[0034] At the same time, the pivot is close to the bottom surface of the front frame, guiding the main pedal to rotate smoothly forward and toward the front frame along a trajectory close to the bottom surface of the front frame, ensuring precise and controllable rotation stroke and avoiding problems such as insufficient rotation or folding angle.

[0035] Specifically, when the main pedal is rotated to the folded position, the third abutment surface of the abutment piece (parallel to the bottom surface of the front frame) abuts tightly against the bottom surface of the front frame facing the ground, achieving precise positioning after folding. At this time, the main pedal fits snugly against the bottom surface of the front frame, avoiding any unnecessary protrusions. Simultaneously, the handlebar assembly folds down around the head tube to fit against the front frame. The front and rear wheels fold along with the handlebar assembly and main pedal, respectively. The mudguard moves synchronously with the rear wheel, ultimately achieving a further reduction in the length and height of the vehicle, ensuring a compact size after folding, making it easy to fit into small spaces such as backpacks and car trunks, meeting carrying and storage needs.

[0036] In one possible implementation, two extension plates are provided on the side of the main pedal facing the front frame, and the front frame is rotatably connected between the two extension plates.

[0037] The front frame has a first mounting hole on the side facing the main step, and the extension plate has a second mounting hole corresponding to the first mounting hole;

[0038] The second pivot is provided with the first mounting hole and the second mounting hole to allow the front frame to be rotatably connected to the main pedal.

[0039] In this embodiment, two extension plates are provided on the side of the main pedal facing the front frame. The front frame is inserted between the two extension plates, so that the first mounting hole on the side of the front frame facing the main pedal is precisely aligned with the second mounting hole on the two extension plates, ensuring that the first and second mounting holes are coaxially positioned. The second rotating shaft is sequentially passed through the second mounting hole of one of the extension plates, the first mounting hole of the front frame, and the second mounting hole of the other extension plate to complete the rotational connection assembly between the front frame and the main pedal. The rotating shaft serves as the fulcrum for relative rotation between the front frame and the main pedal.

[0040] It should be noted that by clamping the front frame in the middle with two extension plates and cooperating with the pivot for positioning, the left and right deviation and sway of the front frame during rotation can be effectively limited, ensuring that the rotation trajectory of the main pedal around the pivot is precise and controllable, avoiding jamming and misalignment when folding or unfolding, and solving the problems of unstable rotation and component deformation that are easy to occur with a single extension plate or a single-sided connection.

[0041] In one possible implementation, the abutment and the extension plate are integrated as a single unit.

[0042] In this embodiment, the abutment and the extension plate are an integral structure, which can be set between the two extension plates. In the unfolded state, the second abutment surface of the abutment abuts and positions itself against the second surface of the front frame. In the folded state, the third abutment surface of the abutment abuts and positions itself against the ground of the front frame. This can prevent the abutment and the main pedal from shifting or swaying during unfolding or folding, and improve the structural stability of the frame assembly.

[0043] Furthermore, during folding or resetting, the integrated structure of the extension plate and the abutment provides a precise guide trajectory for the rotation of the main pedal, preventing skewness or jamming during rotation and ensuring precise and controllable rotation of the main pedal around the pivot axis, thereby further improving the smoothness and feel of the user's folding and resetting operations.

[0044] In one possible implementation, along the thickness direction of the abutment, the orthographic projection of the extension plate on the front frame covers the orthographic projection of the abutment on the front frame.

[0045] In this embodiment, the projection coverage along the thickness direction of the abutment ensures that the extension plate can completely wrap around the left and right sides of the abutment, forming a clamping limit, avoiding local displacement or suspension of the abutment due to lateral force, thereby solving the problem of incomplete abutment limit and easy loosening, and improving the stability of the fit.

[0046] Furthermore, the orthographic projection of the extension plate on the front frame covers the orthographic projection of the abutment on the front frame. The abutment fits snugly with the extension plate, making the outer surfaces of the front frame, extension plate, and abutment flush. There are no steps or protrusions on the sides of the vehicle, ensuring a flat structure and improving the flatness of the scooter's structure.

[0047] The projection of the extension plate onto the front frame covers the projection of the abutment, ensuring that the abutment is covered by the extension plate. After folding, the abutment, extension plate, and front frame fit tightly together, with a flat side profile and no extra protrusions. This not only further reduces the overall volume after folding but also avoids structural protrusions caused by component misalignment. It also makes it easy to put into small spaces such as backpacks and car trunks, reducing obstacles during storage.

[0048] In one possible implementation, the two ends of the abutment abut against the inner sides of the two extension plates, respectively;

[0049] In this embodiment, the two ends of the abutment are tightly abutted against the inner sides of the two extension plates respectively. Without the need for additional limiting components, the abutment can be fully clamped and limited in the left and right directions, preventing the abutment from swaying or shifting in the left and right directions during unfolding and folding. This further ensures the abutment positioning accuracy between the abutment and the front frame, avoids frame shaking caused by the abutment offset, and improves the structural rigidity and stability of the frame assembly.

[0050] Alternatively, the number of abutments is two, with the two abutments spaced apart between the two extension plates.

[0051] In this embodiment, the two abutment members are respectively set one-to-one with the two extension plates to ensure more precise and stable positioning. In addition, the thickness of the abutment members can be reduced, saving costs. Furthermore, the positions of the two abutment members can be flexibly arranged according to the abutment requirements between the front frame and the main pedal, further ensuring the abutment effect between the abutment members and the second and third surfaces of the front frame, preventing the abutment members from shifting, while the double positioning can disperse lateral stress and improve the anti-sway capability of the frame assembly.

[0052] In one possible implementation, the second folding mechanism is located at the second end of the front frame; the front frame also has a connecting surface located between the top surface and the first surface;

[0053] When the second folding mechanism is unfolded, the connecting surface and the top surface of the main pedal are on the same plane.

[0054] In this embodiment, when the second folding mechanism is unfolded, the connecting surface of the front frame and the top surface of the main pedal are on the same plane, which can avoid steps, gaps, or unevenness at the connection between the front frame and the main pedal. When the user adjusts their standing position while getting on or off the vehicle or while driving, their feet can smoothly transition between the connecting surface and the top surface of the main pedal, effectively avoiding safety hazards such as foot jamming or tripping caused by protruding steps, or heels getting stuck due to gaps.

[0055] Furthermore, the integrated plane formed by the connecting surface and the top surface of the main pedal transforms the connecting surface of the front frame into an effective pedaling area, effectively expanding the user's standing space without increasing the physical length of the main pedal. This allows users to flexibly adjust their standing position according to their height and road conditions, dispersing foot fatigue during long rides and improving the user experience.

[0056] It should be noted that the second folding mechanism is located at the second end of the front frame, that is, the end connected to the main pedal. This avoids the user's weight and driving impact force being concentrated in the main pedal area. Instead, it is evenly transmitted to the front frame through the flush connection surface, realizing the distributed transmission of load and further improving the overall load-bearing limit and torsional stiffness of the frame components.

[0057] In one possible implementation, a second auxiliary wheel is also provided on the main pedal, and the second auxiliary wheel is located on the side of the main pedal away from the abutment member;

[0058] When the main pedal rotates relative to the front frame, the second auxiliary wheel rotates synchronously.

[0059] In this embodiment, when the main pedal rotates and folds or unfolds relative to the front frame, the second auxiliary wheel rotates synchronously. The second auxiliary wheel can roll in contact with the ground, providing smooth support for the rotation of the main pedal and effectively reducing sliding friction between the bottom of the main pedal, the extension plate, and the ground. This avoids scratches and wear on the bottom of the main pedal caused by ground friction during folding, and also prevents folding jams caused by excessive frictional resistance, allowing users to easily complete the folding or unfolding operation without expending excessive force.

[0060] Furthermore, after folding, the overall size of the scooter is reduced. At this time, the second auxiliary wheel can be used as a support wheel. Users can lift the handlebar assembly to make the second auxiliary wheel work with the front wheel (or rear wheel) to roll on the ground, making it easy to drag and move the scooter without having to carry it by hand the whole time. This greatly reduces the burden of carrying it, avoids arm fatigue caused by carrying it by hand, and further improves portability.

[0061] In one possible implementation, the front frame has a grip for the user to hold.

[0062] In this embodiment, the grip on the front frame provides a convenient force point for carrying the folded scooter. Users can easily move the entire scooter using the grip without the need for additional tools, effectively solving the core pain points of folding scooters in related technologies, such as large size and inconvenience in carrying after folding. It ensures the structural stability of the scooter in the unfolded state, meeting the force requirements of users when riding, while the two-way folding design greatly improves portability, adapting to the storage needs of small spaces such as car trunks, elevators, and backpacks, thus balancing practicality and convenience.

[0063] In one possible implementation, there are open areas between the front frames to form the grips;

[0064] The grip is located above the hollowed-out area.

[0065] In this embodiment, the grip part is designed in the form of a hollow area, providing space for the user's palm to extend. The user can pass their palm through the hollow area and grasp the grip part located above the hollow area to form a stable grip posture.

[0066] Understandably, compared to a raised grip structure without any open areas, this design allows the user's palm to form a more snug contact with the grip, dispersing localized pressure during gripping.

[0067] Building upon this, the hollowed-out area can be designed in circular, oval, or square shapes to suit the gripping habits of most users, based on the size of the human hand. The grip area is located above the hollowed-out area, forming a natural raised force-bearing structure that does not affect the overall structural integrity of the front frame while improving grip comfort. This further increases the even distribution of force during gripping, making it less prone to slipping.

[0068] In one possible implementation, the frame assembly also includes a head tube located at the front of the front frame in a predetermined travel direction. The front frame includes a first section and a second section, with the first section located between the head tube and the second section. The first section is rotatably connected to the head tube, and the second section is rotatably connected to the main pedal.

[0069] The first segment is higher than the main pedal, and the extension direction of the first segment intersects the extension direction of the second segment;

[0070] One end of the grip is located in the first segment, and the other end is located in the first segment or at the junction of the first and second segments.

[0071] In this embodiment, the front frame is divided into a first section and a second section. The first section is closer to the head tube, and the second section is closer to the main pedal. The design of the first section being higher than the main pedal provides clearance for the folding of the head tube, preventing interference with the main pedal when folding. The intersection of the extension directions of the first and second sections forms a certain angle, which ensures the structural stability of the front frame and guides the main pedal to fit precisely under the front frame when folding forward, preventing folding deviation. The grip is located at the junction of the first and second sections, in the middle area of ​​the frame assembly. This position helps maintain the scooter's center of gravity during transport, preventing deviation that could lead to difficulty in transport or slippage.

[0072] Furthermore, it effectively avoids interference issues when folding the head tube and main pedal, ensuring smooth bidirectional folding while improving the compactness after folding; the grip design in the middle area allows for more balanced force distribution when the user carries it, improving portability without affecting the folding action of the head tube and main pedal, thus balancing structural rationality and ease of use.

[0073] Secondly, this application provides a scooter, including a handlebar assembly, a front wheel, a rear wheel, a mudguard, and a frame assembly as described above. The handlebar assembly is movably connected to the head tube of the frame assembly. The front wheel is located at the bottom of the handlebar assembly, the mudguard is located on the side of the main pedal away from the front frame, and the rear wheel is located at the bottom of the mudguard.

[0074] In this embodiment, by movably connecting the handlebar assembly to the head tube, the user can operate the folding mechanism to rotate and fold the handlebar assembly downwards around the head tube, fitting it snugly against the front frame. Simultaneously, the frame assembly can be further equipped with a folding structure, enabling folding between the front frame and the main pedal, significantly shortening the overall length of the vehicle. Furthermore, the front wheel folds with the handlebar assembly, the rear wheel folds with the main pedal, and the fender moves synchronously with the rear wheel, ultimately reducing the overall size of the vehicle for easy carrying and storage. Attached Figure Description

[0075] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0076] Figure 1 This is a schematic diagram of the scooter in its unfolded state as provided in this embodiment;

[0077] Figure 2 This is a schematic diagram of the scooter in a folded state provided in this embodiment;

[0078] Figure 3 This is a schematic diagram of the front frame of the chassis assembly provided in this embodiment;

[0079] Figure 4 This is a structural schematic diagram of the front frame of the frame assembly provided in this embodiment from another perspective;

[0080] Figure 5 This is a schematic diagram of the structure of the second segment of the front frame of the frame assembly provided in this embodiment;

[0081] Figure 6 This is a schematic diagram of the main pedal of the frame assembly provided in this embodiment;

[0082] Figure 7 This is a cross-sectional view of the frame assembly provided in this embodiment in its unfolded state.

[0083] Figure 8 This is a cross-sectional view of the frame assembly provided in this embodiment in a folded state.

[0084] Figure 9 This is a bottom view of the frame assembly provided in this embodiment in a folded state.

[0085] Explanation of reference numerals in the attached figures:

[0086] 10. Scooter; A. Preset direction of travel;

[0087] 100. Chassis components;

[0088] 110. Head tube;

[0089] 120. Front frame; 121. First section; 122. Second section; 123. First mounting hole; 124. Sliding hole; 127. First surface; 128. Second surface; 129. Bottom surface;

[0090] 130. Main pedal; 131. First contact surface; 132. Second auxiliary wheel;

[0091] 140. Holding part;

[0092] 150. Extension plate; 151. Second mounting hole; 152. Limiting port;

[0093] 160. Abutting component; 161. Second abutting surface; 162. Third abutting surface;

[0094] 170. Handlebar assembly;

[0095] 180. Second pivot;

[0096] 300. Second folding mechanism; 310. Limiting shaft;

[0097] 400, front wheel;

[0098] 500, rear wheel;

[0099] 600. Mudguards.

[0100] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0101] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0102] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar devices or devices having the same or similar functions throughout. The described embodiments are some device embodiments of this application, not all device embodiments. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. Other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are all within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0103] Firstly, referring to Figure 1 and Figure 2 This embodiment provides a scooter 10, which includes a handlebar assembly 170, a front wheel 400, a rear wheel 500, a mudguard 600, and a frame assembly 100. The handlebar assembly 170 is movably connected to the head tube 110 of the frame assembly 100. The front wheel 400 is located at the bottom of the handlebar assembly 170. The mudguard 600 is located on the side of the main pedal 130 away from the front frame 120. The rear wheel 500 is located at the bottom of the mudguard 600.

[0104] Understandably, scooter 10 can be an electric scooter 10.

[0105] It should be noted that the front wheel 400 and the rear wheel 500, as the walking components of the scooter 10, can undertake the functions of guidance and partial weight-bearing, and can be integrated with drive motors as needed. The drive motor is the power output end of the scooter 10, which drives the rear wheel 500 or the front wheel 400 to rotate, so as to facilitate the movement of the scooter 10.

[0106] Furthermore, the mudguard 600 serves as a protective component of the scooter 10, preventing mud, water, and dust from splashing onto the ground during riding and protecting the user's clothing and the scooter 10's own components (such as the motor and frame).

[0107] It should be noted that in some embodiments, the mudguard 600 is made of plastic or lightweight alloy, and the mudguard 600 is arc-shaped or flat and is mounted on the frame assembly 100, thereby blocking mud and water from the ground during the rear wheel 500's movement.

[0108] It should be noted that the frame assembly 100 can be equipped with a folding structure, allowing the front frame 120 and the main footrest 130 to be folded together, significantly shortening the overall length of the vehicle. Furthermore, the front wheel 400 folds with the handlebar assembly 170, the rear wheel 500 folds with the main footrest 130, and the mudguard 600 moves synchronously with the rear wheel 500, ultimately reducing the overall size of the vehicle for easy carrying and storage.

[0109] The following explanation uses the frame assembly 100 as an example.

[0110] Reference Figure 1 , Figure 2 as well as Figure 3 Secondly, embodiments of this application provide a chassis assembly 100, which includes a front chassis 120 and a main pedal 130 arranged sequentially from front to back along a preset travel direction A. A second folding mechanism 300 is provided between the front chassis 120 and the main pedal 130.

[0111] Understandably, the frame assembly 100 also includes a head tube 110, which is located in front of the front frame 120 in a preset travel direction A.

[0112] Specifically, the head tube 110 has a tubular structure and is vertically or obliquely disposed at the front end of the frame assembly 100. The head tube 110 can connect the handlebar assembly 170 and the frame assembly 100. Since the frame assembly 100 and the head tube 110 are movably connected, it is convenient to provide installation support for the movement of the handlebar assembly 170, while ensuring steering flexibility and structural stability.

[0113] The front frame 120 is positioned between the head tube 110 and the main pedal 130. One end of the front frame 120 is connected to the head tube 110, and the other end is connected to the main pedal 130 via a second folding mechanism 300. The front frame 120 provides support. The main pedal 130, as a rear-end component, facilitates standing for the user. An abutment 160 is provided on the side facing the front frame 120, which can be folded relative to the front frame 120 via the second folding mechanism 300.

[0114] Furthermore, the second folding mechanism 300 is disposed between the front frame 120 and the main pedal 130. The second folding mechanism 300 can fold or unfold the front frame 120 and the main pedal 130, thereby controlling the relative movement state of the front frame 120 and the main pedal 130.

[0115] Reference Figure 4 , Figure 5 as well as Figure 6 In some embodiments, the main pedal 130 is provided with an abutment 160 facing the front frame 120. The main pedal 130 has a first abutment surface 131, and the abutment 160 has a second abutment surface 161 and a third abutment surface 162. The side of the front frame 120 facing the main pedal 130 has a first surface 127 and a second surface 128 that are intersecting; the angle between the first surface 127 and the second surface 128 is adapted to the angle between the first abutment surface 131 and the second abutment surface 161.

[0116] It should be noted that a first abutment surface 131 is provided on the surface of the main pedal 130 facing the front frame 120, and an abutment member 160 is disposed on the first abutment surface 131 to facilitate abutment positioning between the main pedal 130 and the front frame 120. In the unfolded state, the first surface 127 abuts against the first abutment surface 131 of the main pedal 130 for positioning, and the second abutment surface 161 of the abutment member 160 abuts against the second surface 128 of the front frame 120 to achieve abutment positioning after unfolding. In the folded state, the third abutment surface 162 of the abutment member 160 abuts against the bottom surface 129 of the front frame 120 facing the ground to achieve stable support after folding.

[0117] Reference Figure 4 , Figure 7 In some embodiments, when the second folding mechanism 300 is unfolded, the main pedal 130 is located behind the second folding mechanism 300 along a preset travel direction A, with the first surface 127 abutting the first abutting surface 131 and the second surface 128 abutting the second abutting surface 161.

[0118] Understandably, in the unfolded state, the second folding mechanism 300 is in the unfolded state. Since the intersection angle of the first surface 127 and the second surface 128 of the front frame 120 matches the intersection angle of the first abutment surface 131 of the main pedal 130 and the second abutment surface 161 of the abutment member 160, the first surface 127 of the front frame 120 is in close contact with the first abutment surface 131 of the main pedal 130, and the second surface 128 of the front frame 120 is in close contact with the second abutment surface 161 of the abutment member 160. Through the double contact, the main pedal 130 and the front frame 120 are accurately positioned, avoiding relative shaking during driving.

[0119] Reference Figure 2 , Figure 8 In some embodiments, when the second folding mechanism 300 is folded, the main pedal 130 is folded forward along a preset travel direction A and toward the front frame 120 so as to be located in front of the second folding mechanism 300, and the third abutment surface 162 abuts against the bottom surface 129 of the front frame 120 facing the ground.

[0120] Understandably, when switching from the unfolded state to the folded state, the user operates the second folding mechanism 300 to release the unfolded fixing state between the front frame 120 and the main pedal 130, initiating the folding process of the front frame 120 and the main pedal 130. Driven by the second folding mechanism 300, the main pedal 130 moves forward along the preset travel direction A, while simultaneously rotating and folding towards the front frame 120, gradually approaching the front frame 120, and finally positioned in front of the second folding mechanism 300, completing the folding action of the main pedal 130.

[0121] Specifically, when the main pedal 130 is folded into place, the third abutting surface 162 of the abutting member 160 abuts tightly against the bottom surface 129 of the front frame 120 facing the ground, thereby achieving the folding positioning of the main pedal 130 and the front frame 120, preventing accidental shaking or unfolding after folding, ensuring the stability of the folded state, and facilitating carrying and storage.

[0122] The frame assembly 100 provided in this embodiment, when unfolded, achieves precise positioning of the main pedal 130 and the front frame 120 through the abutment of the first surface 127 and the first abutment surface 131, and the abutment of the second surface 128 and the second abutment surface 161. This double abutment prevents relative displacement and swaying between the two during driving, ensures the connection strength of the frame assembly 100 when folded, and improves the structural stability of the frame assembly 100.

[0123] Furthermore, the double contact method can increase the contact area between the main pedal 130 and the front frame 120, dispersing the stress caused by the user's weight and road impact during riding, avoiding excessive local stress that could damage components, extending the service life of the frame assembly 100, and improving the stability of the scooter 10 during riding, thus ensuring the user's riding safety.

[0124] It is understandable that the folding mechanism 300 is used to fold the front frame 120 and the main pedal 130. The main pedal 130 is folded forward along the preset travel direction A to the front of the second folding mechanism 300, so that the frame assembly 100 is reduced in both length and height, thereby further reducing the overall volume of the scooter 10 after folding, making it easier to put into small spaces such as backpacks and car trunks, and making it easier to store and carry.

[0125] It should be noted that after folding, the third contact surface 162 of the contact piece 160 abuts against the bottom surface 129 of the front frame 120, achieving precise positioning of the folded state. This prevents relative wobbling and accidental unfolding of the main pedal 130 and the front frame 120 after folding, improves the structural stability after folding, and ensures safety during carrying and storage.

[0126] It should be noted that, in some embodiments, the bottom surface 129 of the front frame 120 facing the ground refers to the surface on the bottom wall of the front frame 120 facing the ground.

[0127] Reference Figure 4 , Figure 5 In other embodiments, the front frame 120 has a hollow structure, and the bottom surface 129 refers to the surface of the side wall of the front frame 120 facing the ground.

[0128] Reference Figure 7In some embodiments, the sum of the angle between the first surface 127 and the second surface 128 and the angle between the first abutting surface 131 and the second abutting surface 161 is 360°.

[0129] Understandably, since the sum of the angle between the first surface 127 and the second surface 128 and the angle between the first abutting surface 131 and the second abutting surface 161 is 360°, when the main pedal 130 and the front frame 120 are unfolded into place by the second folding mechanism 300, the two intersecting angles form a perfect complementary fit, so that the first surface 127 of the front frame 120 can abut against and fit against the first abutting surface 131 of the main pedal 130, and the second surface 128 of the front frame 120 can abut against and fit against the second abutting surface 161 of the abutting member 160, ensuring that there is no gap or offset between the front frame 120 and the main pedal 130.

[0130] Specifically, the first surface 127 of the front frame 120 can abut against the first contact surface 131 of the main pedal 130, and the second surface 128 of the front frame 120 can abut against the second contact surface 161 of the contact member 160. This 360° angle cooperation between the two contact surfaces ensures precise positioning of the main pedal 130 and the front frame 120, preventing relative swaying during riding. Simultaneously, the mating contact structure forms a stable support surface, bearing the user's weight and riding impact, and in conjunction with other components of the frame assembly 100, enables stable riding of the scooter 10.

[0131] It should be noted that, compared to the fit between ordinary angles, the 360° angle ensures that the first surface 127 of the front frame 120 and the first contact surface 131, and the second surface 128 and the second contact surface 161 of the main pedal 130 are in contact and fit together, avoiding problems such as fit gaps and positioning offsets. The relative position of the main pedal 130 and the front frame 120 is further fixed, effectively preventing the frame from shaking due to positioning deviations during driving and improving the structural strength of the frame assembly 100.

[0132] Furthermore, the sum of the angles at which the first surface 127 and the first contact surface 131, and the second surface 128 and the second contact surface 161 abut against each other is 360°, which can further increase the contact area. This allows the stress generated by the user's weight and the impact force of the road surface during the ride to be evenly distributed to multiple contact surfaces, avoiding fatigue, deformation or damage of components caused by localized stress concentration, extending the service life of the frame assembly 100, and improving the stability of the scooter 10 during the ride, thus reducing driving safety hazards.

[0133] Reference Figure 7 , Figure 8 In some embodiments, the third abutment surface 162 is arranged parallel to the bottom surface 129.

[0134] Understandably, when a user needs to store the scooter 10, the main pedal 130 is flipped and folded towards the ground. Since the third contact surface 162 is parallel to the ground of the front frame 120, when the two move towards each other, it can ensure that the main pedal 130 is equidistant from the bottom surface 129 of the front frame 120 in the folding trajectory. This avoids lateral compression or edge collision between the two in the folding path, that is, interference occurs when the main pedal 130 is flipped and folded towards the front frame 120, thus achieving a smooth and non-jamming folding action.

[0135] When the main pedal 130 is rotated to a preset angle, the third abutment surface 162 of the abutment member 160 is fully in contact with the bottom surface 129 of the front frame 120 facing the ground. Since the third abutment surface 162 and the bottom surface 129 are parallel, they fit tightly together, increasing the contact area between the third abutment surface 162 and the ground, thus forming a stable support surface and facilitating the locking of the main pedal 130 in the folded position. In this state, the overall size of the vehicle body is significantly reduced, and the structure is stable with no relative swaying.

[0136] It should be noted that the third contact surface 162 is parallel to the bottom surface 129. This parallel contact surface provides stable motion guidance during folding. Compared with non-parallel or irregular contact in related technologies, the parallel structure effectively avoids interference (such as jamming, edge wear, or collision) between the front frame 120 and the main pedal 130 in the folding path, ensuring smooth folding operation, making the folded vehicle body profile more compact, extending the mechanical life of the folding structure and related components, and improving the user's operating feel and smoothness.

[0137] Reference Figure 9 In some embodiments, along a preset travel direction A, the outer side of the front frame 120 (refer to...) Figure 9 (b) and the outer side of the abutment 160 (refer to) Figure 9 a) are located in the same plane.

[0138] Understandably, when the frame assembly 100 is in the unfolded state, the front frame 120 precisely abuts against the main pedal 130 via the second folding mechanism, such that the first surface 127 of the front frame 120 abuts against the first abutting surface 131 of the main pedal 130, and the second surface 128 of the front frame 120 abuts against the second abutting surface 161 of the abutting member 160. At this time, along the preset travel direction A of the scooter 10, i.e., the front-to-back extension direction of the scooter, the outer side of the front frame 120 (refer to...) Figure 9 (b) The outer side of the abutment member 160 on the main pedal 130 (refer to) Figure 9 a) Natural alignment to form a flat plane, without any misalignment or step protrusion, ensuring the flatness of the vehicle's side surface when unfolded.

[0139] Furthermore, after switching from the unfolded state to the folded state, the main pedal 130 is controlled to rotate and fold forward along the preset travel direction A toward the front frame 120 until the third abutment surface 162 of the abutment member 160 is in close contact with the bottom surface 129 of the front frame 120.

[0140] During this folding process, since the outer side of the front frame 120 and the outer side of the abutment 160 are already on the same plane in the unfolded state, the outer sides of the two always remain aligned during folding to avoid one side protruding and the other side sinking. After folding, the outer sides of the two are always in a close and aligned state, forming a flat side profile, avoiding bulges and jamming caused by misalignment of the outer sides after folding, ensuring smooth folding action, and ensuring that the structure of the front frame 120 and the main pedal 130 is flat after folding.

[0141] It should be noted that aligning the outer side of the vehicle with the preset travel direction A prevents misalignment and interference between the outer side of the front frame 120 and the outer side of the abutment 160 during folding, such as collisions between protruding parts or jamming of recessed parts. This ensures that the main pedal 130 folds smoothly towards the front frame 120 without any jamming or wear. At the same time, it ensures that the side of the vehicle remains flat during the folding process, avoiding irregular protrusions due to component misalignment, and improving the smoothness and feel of the user's folding operation.

[0142] The flat folding structure further reduces the overall space occupied after folding, avoiding the inability to smoothly put into small spaces such as backpacks and car trunks due to side protrusions. At the same time, when carrying it in public places such as subways and buses, the flat sides will not snag on clothes or take up extra space, further improving the convenience of carrying it.

[0143] Reference Figure 3 and Figure 4 In some embodiments, the front frame 120 and the main pedal 130 are rotatably connected via a second pivot 180.

[0144] It is understandable that the front frame 120 and the main pedal 130 are rotatably connected through the second pivot 180. When the user needs to fold and store the vehicle, the second folding mechanism 300 is operated to unlock the vehicle, releasing the front frame 120 and the main pedal 130 from unfolding and fixing. The main pedal 130 then rotates around the second pivot 180 as the center of rotation to perform subsequent folding actions.

[0145] Reference Figure 4 and Figure 5 The second rotating shaft 180 is close to the bottom surface 129 and away from the first surface 127.

[0146] It should be noted that when folding and storing, since the second pivot 180 is far away from the first surface 127, when the main pedal 130 rotates, the movement trajectory of the main pedal 130 avoids the contact part of the front frame 120, the handlebar assembly 170 and the front wheel 400, etc., to avoid interference or jamming of components during rotation.

[0147] At the same time, the pivot is close to the bottom surface 129 of the front frame 120, guiding the main pedal 130 to rotate smoothly forward and toward the front frame 120 along the trajectory close to the bottom surface 129 of the front frame 120, ensuring that the rotation stroke is precise and controllable, and avoiding problems such as insufficient rotation or insufficient folding angle.

[0148] Specifically, when the main pedal 130 is rotated to the folded position, the third abutment surface 162 of the abutment member 160 (parallel to the bottom surface 129 of the front frame 120) abuts tightly against the bottom surface 129 of the front frame 120 facing the ground, achieving precise positioning after folding. At this time, the main pedal 130 fits tightly against the bottom surface 129 of the front frame 120, avoiding any unnecessary protrusions. Simultaneously, the handlebar assembly 170 folds downward, and the front wheel 400 and rear wheel 500 fold along with the handlebar assembly 170 and the main pedal 130, respectively. The mudguard 600 moves synchronously with the rear wheel 500, ultimately achieving a further reduction in the length and height of the vehicle, ensuring a compact size after folding, making it easy to fit into small spaces such as backpacks and car trunks, meeting carrying and storage needs.

[0149] Reference Figure 5 and Figure 6 In some embodiments, the main pedal 130 has two extension plates 150 on the side facing the front frame 120, and the front frame 120 is rotatably connected between the two extension plates 150. The front frame 120 has a first mounting hole 123 on the side facing the main pedal 130, and the extension plates 150 have second mounting holes 151 corresponding to the first mounting hole 123. A second rotating shaft 180 passes through the first mounting hole 123 and the second mounting hole 151 to rotatably connect the front frame 120 and the main pedal 130.

[0150] Two extension plates 150 are provided on the side of the main pedal 130 facing the front frame 120. The front frame 120 is inserted between the two extension plates 150, so that the first mounting hole 123 on the side of the front frame 120 facing the main pedal 130 is precisely aligned with the second mounting hole 151 on the two extension plates 150, ensuring that the first mounting hole 123 and the second mounting hole 151 are coaxially arranged. The second rotating shaft 180 is sequentially passed through the second mounting hole 151 of one of the extension plates 150, the first mounting hole 123 of the front frame 120, and the second mounting hole 151 of the other extension plate 150, completing the rotational connection assembly between the front frame 120 and the main pedal 130. The rotating shaft serves as the fulcrum for the relative rotation between the front frame 120 and the main pedal 130.

[0151] It should be noted that by clamping the front frame 120 in the middle with two extension plates 150 and cooperating with the pivot for positioning, the left and right deviation and sway of the front frame 120 during rotation can be effectively limited, ensuring that the rotation trajectory of the main pedal 130 around the pivot is precise and controllable, avoiding jamming and misalignment when folding or unfolding, and solving the problems of unstable rotation and component deformation that are easy to occur with a single extension plate 150 or a single-sided connection.

[0152] In some embodiments, two extension plates 150 are symmetrically arranged on the main pedal 130.

[0153] Understandably, the first mounting hole 123 and the second mounting hole 151 are precisely aligned. After the rotating shaft passes through, it rotates and engages with the first mounting hole 123 and the second mounting hole 151 respectively. This ensures the flexibility of the rotation of the front frame 120 and the main pedal 130, avoids loosening caused by excessive gaps between the rotating shaft and the first mounting hole 123 and the second mounting hole 151, and prevents rotation jamming caused by excessively small gaps.

[0154] Furthermore, the two extension plates 150 can increase the contact area between the main pedal 130 and the front frame 120, and evenly transmit the stress generated by the user's weight and road impact during driving to the front frame 120 and the main pedal 130 through the extension plates 150 and the second pivot 180. This avoids localized stress concentration, such as excessive stress at a single connection point causing deformation of the mounting hole or bending of the second pivot 180, and extends the service life of the second pivot 180, the extension plates 150, the front frame 120, and the main pedal 130.

[0155] In some embodiments, the abutment 160 and the extension plate 15 are integral.

[0156] It is understood that the abutment 160 and the extension plate 150 are an integral structure. In the unfolded state, the second abutment surface 161 of the abutment 160 abuts and positions itself against the second surface 128 of the front frame 120. In the folded state, the third abutment surface 162 of the abutment 160 abuts and positions itself against the bottom surface 129 of the front frame 120. This can prevent the abutment 160 and the main pedal 130 from shifting or swaying during unfolding or folding, thereby improving the structural stability of the frame assembly 100.

[0157] Furthermore, during the folding or resetting process, the integrated structure of the extension plate 150 and the abutment 160 can provide a precise guide trajectory for the rotation of the main pedal 130, preventing the main pedal 130 from deviating or jamming when rotating, ensuring that the rotation stroke of the main pedal 130 around the pivot is precise and controllable, and further improving the smoothness and feel of the user's folding and resetting operation.

[0158] Reference Figure 3 , Figure 4 In some embodiments, along the thickness direction of the abutment 160, the orthographic projection of the extension plate 150 on the front frame 120 covers the orthographic projection of the abutment 160 on the front frame 120.

[0159] It is understandable that the projection coverage along the thickness direction of the abutment 160 ensures that the extension plate 150 can completely wrap around the left and right sides of the abutment 160, forming a clamping limit, avoiding the abutment 160 from local displacement or suspension due to lateral force, thereby solving the problem of incomplete limiting of the abutment 160 and easy loosening, and improving the stability of the fit.

[0160] Furthermore, the orthographic projection of the extension plate 150 on the front frame 120 covers the orthographic projection of the abutment 160 on the front frame 120. The abutment 160 fits into the extension plate 150, making the outer sides of the front frame 120, the extension plate 150, and the abutment 160 flush. There are no steps or protrusions on the side of the vehicle body, ensuring a flat structure and improving the flatness of the scooter 10.

[0161] The projection of the extension plate 150 onto the front frame 120 covers the projection of the abutment 160, ensuring that the abutment 160 is covered by the extension plate 150. After folding, the abutment 160, the extension plate 150, and the front frame 120 fit together tightly, with a flat side profile and no extra protrusions. This not only further reduces the overall volume after folding but also avoids structural protrusions caused by component misalignment. At the same time, it is easy to put into small spaces such as backpacks and car trunks, reducing obstacles during storage.

[0162] In some embodiments, the number of abutments 160 is two, and the two abutments 160 are spaced apart between the two extension plates 150.

[0163] Specifically, the two abutment pieces 160 correspond one-to-one with the two extension plates 150, ensuring more precise and stable positioning. Additionally, the thickness of the abutment pieces 160 can be reduced, saving costs. Furthermore, the positions of the two abutment pieces 160 can be flexibly arranged according to the abutment requirements between the front frame 120 and the main pedal 130, further ensuring the abutment effect between the abutment pieces 160 and the second and third surfaces 128 of the front frame 120, preventing the abutment pieces 160 from shifting. Simultaneously, the dual positioning can disperse lateral stress, improving the anti-sway capability of the frame assembly 100.

[0164] It should be noted that the two abutment pieces 160 are symmetrically arranged on the inner sides of the two extension plates 150, corresponding one-to-one with each extension plate 150. Furthermore, each abutment piece 160 is covered by its corresponding extension plate 150. In the unfolded state, the outer surfaces of the two abutment pieces 160, the extension plates 150, and the front frame 120 are flush, resulting in a smooth, unprotruding side profile. In the folded state, the two abutment pieces 160 fold synchronously with the main foot pedal 130, fitting snugly against the extension plates 150 and the front frame 120. This prevents side protrusions caused by misalignment of the abutment pieces 160, ensuring a smooth body contour after folding. This facilitates placement in small spaces such as backpacks and car trunks, improving portability.

[0165] Reference Figure 1 and Figure 3 In some embodiments, the second folding mechanism 300 is located at the second end of the front frame 120. The front frame 120 also has a connecting surface located between the top surface and the first surface 127. When the second folding mechanism 300 is unfolded, the connecting surface is in the same plane as the top surface of the main pedal 130.

[0166] Understandably, when the second folding mechanism 300 is unfolded, the connecting surface of the front frame 120 and the top surface of the main pedal 130 are on the same plane, which can avoid steps, gaps, or unevenness at the connection between the front frame 120 and the main pedal 130. When the user adjusts their standing position while getting on and off the vehicle or while driving, their feet can smoothly transition between the connecting surface and the top surface of the main pedal 130, effectively avoiding safety hazards such as foot jamming or tripping caused by raised steps, or heels getting stuck due to gaps.

[0167] Furthermore, the integrated plane formed by the connecting surface and the top surface of the main pedal 130 transforms the connecting surface of the front frame 120 into an effective pedaling area, effectively expanding the user's standing space without increasing the physical length of the main pedal 130. This allows users to flexibly adjust their standing position according to their height and road conditions, reducing foot fatigue during long rides and improving the user experience.

[0168] It should be noted that the second folding mechanism 300 is located at the second end of the front frame 120, that is, the end connected to the main pedal 130. This avoids the user's weight and driving impact force being concentrated in the area of ​​the main pedal 130. Instead, the load is evenly transmitted to the front frame 120 through the flush connection surface, thus achieving distributed load transfer and further improving the overall load-bearing limit and torsional stiffness of the frame assembly 100.

[0169] Reference Figure 1 , Figure 2 and Figure 3In some embodiments, a second auxiliary wheel 132 is also provided on the main pedal 130, and the second auxiliary wheel 132 is located on the side of the main pedal 130 away from the abutment member 160. When the main pedal 130 rotates relative to the front frame 120, the second auxiliary wheel 132 rotates synchronously.

[0170] Understandably, when the main pedal 130 rotates and folds or unfolds relative to the front frame 120, the second auxiliary wheel 132 rotates synchronously. The second auxiliary wheel 132 can roll in contact with the ground, providing smooth support for the rotation of the main pedal 130 and effectively reducing the sliding friction between the bottom of the main pedal 130, the extension plate 150, and the ground. This avoids scratches and wear on the bottom of the main pedal 130 caused by ground friction during folding, and also prevents folding jams caused by excessive frictional resistance, allowing users to easily complete the folding or unfolding operation without expending excessive force.

[0171] Furthermore, after folding, the overall size of the scooter 10 is reduced. At this time, the second auxiliary wheel 132 can be used as a support wheel. Users can lift the handlebar assembly 170 to make the second auxiliary wheel 132 cooperate with the front wheel 400 (or the rear wheel 500) to roll on the ground, so that the scooter 10 can be easily dragged and transported without having to carry it by hand. This greatly reduces the burden of carrying it, avoids arm fatigue caused by carrying it by hand, and further improves portability.

[0172] It should be noted that the second auxiliary wheel 132 is located on the side of the extension plate 150 away from the abutment 160. This position avoids flat areas such as the top surface of the main pedal 130 and the side of the vehicle body. Furthermore, the height of the second auxiliary wheel 132 can be adapted to the overall thickness of the vehicle body after folding, avoiding any extra protrusion from the vehicle body outline. This ensures the flatness of the top and side surfaces of the vehicle body in the unfolded state, as well as the regularity of the vehicle body outline in the folded state, avoiding any unnecessary protrusions.

[0173] In some embodiments, the second folding mechanism 300 includes a limiting shaft 310, a second switch, and a second latch. The limiting shaft 310 is slidably mounted on the front frame 120. The second switch is slidably mounted on one end of the second latch and can engage with the front frame 120; the other end of the second folding mechanism is connected to the limiting shaft 310. The extension plate 150 has a limiting opening 152 corresponding to the limiting shaft 310, and the limiting shaft 310 cooperates with the limiting opening 152 to engage the front frame 120 and the main pedal 130.

[0174] The limiting shaft 310 can slide along the front frame 120. One end of the second latch is connected to the limiting shaft 310, and the other end is equipped with a second switch, which can be engaged and fixed with the front frame 120. When locked, the limiting shaft 310 is slid into the limiting port 152 of the extension plate 150, and then the second switch is slid to engage with the front frame 120, fixing the position of the limiting shaft 310 and locking the front frame 120 and the main pedal 130. When unlocking, the second switch is slid in the opposite direction to disengage from the front frame 120, and the limiting shaft 310 is disengaged from the limiting port 152, thus releasing the main pedal 130 and allowing it to rotate around the pivot.

[0175] The locking mechanism is reliable and easy to operate by engaging the limiting shaft 310 with the limiting port 152. It can quickly lock and unlock the front frame 120 and the main pedal 130. The cooperation between the limiting shaft 310 and the limiting port 152 can ensure the stability during locking and prevent the main pedal 130 from rotating unexpectedly. At the same time, the component structure is simple, easy to assemble and maintain, and suitable for mass production needs.

[0176] In some embodiments, a sliding hole 124 is provided on the front frame 120, and a limiting shaft 310 is slidably disposed in the sliding hole 124. The sliding hole 124 has a first end and a second end disposed opposite to each other, and the second end corresponds to the limiting opening 152. When the second folding mechanism 300 is folded, the limiting shaft 310 is located at the second end and is located in the limiting opening 152. When the second folding mechanism 300 is unfolded, the limiting shaft 310 is located at the first end and disengaged from the limiting opening 152.

[0177] The sliding hole 124 provides guidance for the sliding of the limiting shaft 310, ensuring that the limiting shaft 310 slides in a fixed direction and avoids deviation. The first end of the sliding hole 124 is away from the extension plate 150, and the second end is close to the extension plate 150 and aligned with the limiting port 152. When locked (frame unfolded), the limiting shaft 310 slides until the first end disengages from the limiting port 152, so that the front frame 120 and the main pedal 130 remain relatively fixed. When unlocked (frame folded), the limiting shaft 310 slides until the second end engages with the limiting port 152, so that the front frame 120 and the main pedal 130 can rotate relative to each other.

[0178] The guiding function of the sliding hole 124 ensures that the limiting shaft 310 slides accurately, avoiding locking failure or unlocking difficulties due to offset, and improving the reliability of the second folding mechanism 300. The limiting design at both ends of the sliding hole 124 can clearly define the locking and unlocking positions of the limiting shaft 310, making it easier for users to judge whether the operation is in place, while avoiding excessive sliding of the limiting shaft 310 that could damage the components.

[0179] In some embodiments, a fixing post and an elastic member are also provided in the front frame 120. The fixing post is fixedly disposed in the front frame 120 and spaced apart from the limiting shaft 310. The two ends of the elastic member are respectively connected to the fixing post and the limiting shaft 310. The elastic member is configured to stretch when the second folding mechanism 300 is locked and retract when the second folding mechanism 300 is unlocked.

[0180] The fixing post is fixed inside the front frame 120. The elastic element connects the fixing post and the limiting shaft 310. When locked, the limiting shaft 310 slides to the first end of the sliding hole 124, and the elastic element is stretched to generate elastic tension. When unlocked, the second switch disengages from the front frame 120, and the elastic element contracts under the action of tension, which drives the limiting shaft 310 to automatically slide to the second end and lock into the limiting port 152, thereby realizing automatic unlocking.

[0181] With the above settings, the second folding mechanism 300 can be automatically unlocked without the user having to manually slide the limit shaft 310, thus improving the ease of operation. The elastic tension of the elastic element can ensure that the limit shaft 310 can quickly engage with the limit port 152 when unlocking, and at the same time, it can generate a certain pre-tightening force on the limit shaft 310 when locking, thereby improving the stability of the lock and preventing the limit shaft 310 from accidentally sliding and causing the lock to fail.

[0182] It should be noted that, in order to prevent users from accidentally touching the second folding mechanism 300, a self-locking device may also be provided on the second folding mechanism 300.

[0183] Reference Figure 1 , Figure 2 as well as Figure 3 In some embodiments, the front frame 120 has a grip portion 140 for a user to hold.

[0184] Specifically, the grip 140 on the front frame 120 provides a convenient force point for carrying the folded scooter. Users can easily move the entire scooter 10 using the grip 140 without the need for additional tools, effectively solving the core pain point of the folding scooter 10 being bulky and inconvenient to carry after folding. It ensures the structural stability of the scooter 10 in its unfolded state, meeting the force requirements of users while riding, and greatly improves portability through the two-way folding design, adapting to the storage needs of small spaces such as car trunks, elevators, and backpacks, thus balancing practicality and convenience.

[0185] Reference Figure 1 In some embodiments, the front frame 120 has a hollowed-out area to form a grip 140. The grip 140 is located above the hollowed-out area.

[0186] With this design, the grip part 140 is set in the form of a hollow area, providing space for the user's palm to extend. The user can pass his palm through the hollow area and grasp the grip part 140 located above the hollow area to form a stable grip posture.

[0187] Understandably, compared to a raised grip structure without any open areas, this design allows the user's palm to form a more closely fitting contact with the grip part 140, dispersing localized pressure during gripping.

[0188] Based on this, the hollowed-out area can be designed as a circle, oval, or square according to the size of the human hand, adapting to the gripping habits of most users. The grip part 140 is located above the hollowed-out area, forming a natural raised force-bearing structure that does not affect the overall structural integrity of the front frame 120 while improving grip comfort. This further increases the even distribution of force during gripping and reduces the likelihood of slipping.

[0189] Meanwhile, the hollowed-out area design can reduce the amount of material used in the grip 140, achieving lightweighting while ensuring grip strength, and further improving portability; in addition, the hollowed-out area can also play a certain role in weight reduction, which, together with the lightweight material design of the front frame 120, further reduces the overall weight of the frame assembly 100.

[0190] In some embodiments, the size and shape of the cutout area can be flexibly adjusted according to the target user group, providing alternative solutions. For example, for adult users, the cutout area can be designed as an oval shape, with the long axis dimension adapted to the size of an adult's palm, allowing the palm to pass naturally when holding, resulting in greater comfort; for children, the cutout area can be designed as a circle to prevent the cutout area from being too large and causing the child's palm to slip when holding, while the grip part 140 can be set as a rounded arc to prevent scratching the child's hand.

[0191] In other embodiments, the edges of the hollowed-out area can be chamfered to prevent sharp edges from scratching the user's palm. At the same time, anti-slip silicone pads can be attached to the inner wall of the hollowed-out area to further increase the friction when gripping and prevent slipping due to sweaty hands.

[0192] Reference Figure 3 In some embodiments, the front frame 120 includes a first segment 121 and a second segment 122. The first segment 121 is located between the head tube 110 and the second segment 122. The first segment 121 is rotatably connected to the head tube 110, and the second segment 122 is rotatably connected to the main pedal 130. The first segment 121 is higher than the main pedal 130, and the extending direction of the first segment 121 intersects the extending direction of the second segment 122.

[0193] One end of the gripping part 140 is disposed on the first segment 121, and the other end is disposed on the first segment 121 or at the junction of the first segment 121 and the second segment 122.

[0194] This design, by dividing the front frame 120 into a first section 121 and a second section 122, with the first section 121 closer to the head tube 110 and the second section 122 closer to the main pedal 130, and the first section 121 being higher than the main pedal 130, provides clearance for the folding of the head tube 110, preventing interference between the head tube 110 and the main pedal 130 when folded. The intersection of the extension directions of the first section 121 and the second section 122 forms a certain angle, ensuring the structural stability of the front frame 120 and guiding the main pedal 130 to precisely fit under the front frame 120 when folded forward, preventing folding deviation. One end of the grip 140 is located at the first section 121, and the other end is located at the junction of the first section 121 and the two sections, in the middle area of ​​the frame assembly 100. This position helps maintain the balance of the scooter 10's center of gravity during transport, preventing the center of gravity from shifting and causing difficulty in transport or slippage.

[0195] Furthermore, it effectively avoids interference when the head tube 110 and main pedal 130 are folded, ensuring smooth bidirectional folding and improving the compactness after folding; the grip part 140 in the middle area is designed so that the force is more even when the user carries it, improving the convenience of carrying, and does not affect the folding action of the head tube 110 and main pedal 130, taking into account both structural rationality and ease of use.

[0196] It should be noted that the grip 140 is located in the middle of the first section 121, so the center of gravity is closer to the front of the front frame 120 when carrying it, which is suitable for taller users. The grip 140 is located at the junction of the first section 121 and the second section 122, so the center of gravity is in the middle of the frame assembly 100, which makes carrying it easier and is suitable for most users.

[0197] As an alternative implementation, a gripping part can be provided at the first segment and the junction position to form a double gripping structure, and the user can choose the gripping position according to the handling needs.

[0198] In the description of the embodiments of this application, it should be understood that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, the connection of devices within two components, or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0199] The terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In the description of this application, "multiple" means two or more, unless otherwise precisely specified.

[0200] The terms "first," "second," "third," and "first" in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or elements is not necessarily limited to those explicitly listed, but may include other steps or elements not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0201] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to the technical features of the device components or the entire device. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A vehicle frame assembly, characterized in that, It includes a front frame and a main step arranged sequentially from front to back along a preset travel direction; a second folding mechanism is provided between the front frame and the main step. The main pedal is provided with an abutment on the front frame, the main pedal has a first abutment surface, and the abutment has a second abutment surface and a third abutment surface; The front frame has a first surface and a second surface that intersect on the side facing the main pedal; the angle between the first surface and the second surface is adapted to the angle between the first contact surface and the second contact surface; When the second folding mechanism is unfolded, the main pedal is located behind the second folding mechanism along the preset travel direction, with the first surface abutting the first abutting surface and the second surface abutting the second abutting surface; When the second folding mechanism is folded, the main pedal moves forward along the preset travel direction and folds toward the front frame to be located in front of the second folding mechanism, and the third abutment surface abuts the bottom surface of the front frame facing the ground.

2. The frame assembly according to claim 1, characterized in that, The sum of the angle between the first surface and the second surface and the angle between the first contact surface and the second contact surface is 360°.

3. The frame assembly according to claim 1, characterized in that, The third contact surface is arranged parallel to the bottom surface.

4. The frame assembly according to any one of claims 1-3, characterized in that, Along the preset travel direction, the outer side of the front frame and the outer side of the abutment are located on the same plane.

5. The frame assembly according to any one of claims 1-3, characterized in that, The front frame and the main pedal are rotatably connected via a second pivot. The second rotating shaft is close to the bottom surface and away from the first surface.

6. The frame assembly according to claim 5, characterized in that, The main pedal has two extension plates on the side facing the front frame, and the front frame is rotatably connected between the two extension plates. The front frame has a first mounting hole on the side facing the main pedal, and the extension plate has a second mounting hole corresponding to the first mounting hole; The second rotating shaft passes through the first mounting hole and the second mounting hole to rotatably connect the front frame and the main pedal.

7. The frame assembly according to claim 6, characterized in that, The abutment and the extension plate are integral parts.

8. The frame assembly according to claim 7, characterized in that, Along the thickness direction of the abutment, the orthographic projection of the extension plate on the front frame covers the orthographic projection of the abutment on the front frame.

9. The frame assembly according to claim 7, characterized in that, The two ends of the abutting member abut against the inner sides of the two extension plates respectively; or, The number of abutting members is two, and the two abutting members are spaced apart between the two extension plates.

10. The frame assembly according to any one of claims 1-3, characterized in that, The second folding mechanism is located at the second end of the front frame; the front frame also has a connecting surface located between the top surface and the first surface; When the second folding mechanism is unfolded, the connecting surface and the top surface of the main pedal are on the same plane.

11. The frame assembly according to any one of claims 1-3, characterized in that, The main pedal is also provided with a second auxiliary wheel, which is located on the side of the main pedal away from the abutment member; When the main pedal rotates relative to the front frame, the second auxiliary wheel rotates synchronously.

12. The frame assembly according to any one of claims 1-3, characterized in that, The front frame has a grip for the user to hold.

13. The frame assembly according to claim 12, characterized in that, The front frame has a hollowed-out area to form the grip portion; The gripping part is located above the hollowed-out area.

14. The frame assembly according to claim 13, characterized in that, The frame assembly also includes a head tube, which is located on the front side of the front frame in the preset travel direction. The front frame includes a first section and a second section, with the first section located between the head tube and the second section. The first section is rotatably connected to the head tube, and the second section is rotatably connected to the main pedal. The first segment is higher than the main pedal, and the extension direction of the first segment intersects the extension direction of the second segment; One end of the gripping part is disposed in the first segment, and the other end is disposed in the first segment or at the junction of the first segment and the second segment.

15. A scooter, characterized in that, The bicycle includes a handlebar assembly, a front wheel, a rear wheel, a mudguard, and a frame assembly as described in any one of claims 1-14, wherein the handlebar assembly is movably connected to the head tube of the frame assembly, the front wheel is disposed at the bottom of the handlebar assembly, the mudguard is located on the side of the main pedal away from the front frame, and the rear wheel is disposed at the bottom of the mudguard.

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