Foldable wheeled vehicle and synchronised motion structure on stand

Abstract

This application provides a foldable wheeled vehicle and a synchronous motion structure on its support. The synchronous motion structure includes a first support rod, a second support rod, and a linkage structure. The first support rod has a first moving part configured to move along a first trajectory. The second support rod has a second moving part configured to move along a second trajectory. The linkage structure includes a first transmission part and a second transmission part, configured such that: when the first transmission part moves along the first trajectory, it drives the second transmission part to move along the second trajectory; and when the second transmission part moves along the second trajectory, it drives the first transmission part to move along the first trajectory. The first moving part is connected to the first transmission part and configured to move simultaneously with the same displacement relative to the ground. The second moving part is connected to the second transmission part and configured to move simultaneously with the same displacement relative to the ground. The system provided in this specification reduces the risk of parts jamming during support movement and offers good reliability and controllability.

Description

Technical Field

[0001] This specification relates to the field of wheeled vehicle technology, and more particularly to foldable wheeled vehicles and synchronous motion structures on supports. Background Technology

[0002] In daily life, there are many scenarios where vehicles are used to transport and carry goods. In some situations, these vehicles need to be foldable. For example, people use manual camping wagons to transport daily necessities during outdoor picnics; these wagons need to be foldable for easy movement. For foldable vehicles, the ease of folding, the folded size, and the weight of the folded vehicle all greatly affect the user experience. Existing folding vehicles have a simple design and poor controllability, making folding inconvenient. Therefore, there is a need for a new type of foldable wheeled vehicle.

[0003] The information in the background section is merely information known only to the inventor and does not imply that such information had entered the public domain before the date of this application, nor does it imply that it can be considered prior art in this disclosure. Utility Model Content

[0004] This specification provides a foldable wheeled vehicle and a synchronous motion structure on a support frame, which can solve the problems existing in related technologies.

[0005] In a first aspect, this application discloses a synchronous motion structure on a support, including a first support rod, a second support rod, and a linkage structure. The first support rod has a first moving part configured to move along a first trajectory. The second support rod has a second moving part configured to move along a second trajectory. The linkage structure includes a first transmission part and a second transmission part, configured such that: when the first transmission part moves along the first trajectory, it drives the second transmission part to move along the second trajectory; and when the second transmission part moves along the second trajectory, it drives the first transmission part to move along the first trajectory. The first moving part is connected to the first transmission part and configured to move simultaneously with the same displacement relative to the ground. The second moving part is connected to the second transmission part and configured to move simultaneously with the same displacement relative to the ground.

[0006] In some embodiments, with the ground as a reference, the displacement value of the first moving part along the first trajectory is equal to the displacement value of the second moving part along the second trajectory.

[0007] In some embodiments, the first trajectory and the second trajectory are symmetrical about a reference plane.

[0008] In some embodiments, the first trajectory is arc-shaped and the second trajectory is arc-shaped.

[0009] In some embodiments, the synchronous motion structure includes a first arc-shaped groove and a second arc-shaped groove, the first arc-shaped groove extending along a first trajectory and the second arc-shaped groove extending along a second trajectory. The first arc-shaped groove and the second arc-shaped groove are symmetrical about a reference plane.

[0010] In some embodiments, the first support rod is hinged to the first transmission part via a first moving part, and the second support rod is hinged to the second transmission part via a second moving part.

[0011] In some embodiments, the linkage structure is a multi-link structure.

[0012] In some embodiments, the multi-link structure includes a first link and a second link. A first transmission part is located on the first link, and a second transmission part is located on the second link. The first transmission part is hinged to a first support rod via a first transmission shaft, and the second transmission part is hinged to a second support rod via a second transmission shaft. The first link is hinged to the second link via a third transmission shaft.

[0013] In some embodiments, the multi-link structure includes a third link and a fourth link. A first link is hinged to the third link via a fourth drive shaft. A second link is hinged to the fourth link via a fifth drive shaft. The third link is hinged to the fourth link via a sixth drive shaft.

[0014] In some embodiments, the distance between the third and fourth drive shafts is equal to or approximately equal to the distance between the third and fifth drive shafts. The distance between the sixth and fourth drive shafts is equal to or approximately equal to the distance between the sixth and fifth drive shafts. The distance between the first and third drive shafts is equal to or approximately equal to the distance between the second and third drive shafts.

[0015] In some embodiments, the synchronous motion structure includes a support connector. A first support rod is hinged to the support connector via a first hinge axis, and a second support rod is hinged to the support connector via a second hinge axis. The first hinge axis is located at the center of a first trajectory, and the second hinge axis is located at the center of a second trajectory.

[0016] In some embodiments, the bracket connector includes a first arcuate groove and a second arcuate groove. The first arcuate groove extends along a first trajectory, and the second arcuate groove extends along a second trajectory. A first drive shaft is movably disposed within the first arcuate groove, and a second drive shaft is movably disposed within the second arcuate groove.

[0017] In some embodiments, the first arcuate groove and the second arcuate groove are symmetrical about the reference plane.

[0018] In some embodiments, the bracket connector includes at least one linear groove, the extension direction of which is perpendicular to the line connecting the first hinge shaft and the second hinge shaft. A third drive shaft and a sixth drive shaft are movably disposed within the at least one linear groove.

[0019] In some embodiments, at least one linear groove includes a first linear groove and a second linear groove. The extension directions of both the first and second linear grooves are perpendicular to the line connecting the first and second hinge axes. A third drive shaft is movably disposed within the first linear groove, and a sixth drive shaft is movably disposed within the second linear groove.

[0020] In some embodiments, the bracket connector includes a first piece and a second piece, which are opposite to and connected to each other. One end of the first bracket rod is located between the first piece and the second piece, and is hinged to the first piece and the second piece via a first hinge shaft.

[0021] In some embodiments, the synchronous motion structure further includes a first pin and a second pin. The first pin is movably disposed on a first support rod, and the second pin is movably disposed on a second support rod. The support connector is provided with a first slot and a second slot. The first slot is adapted to the size and shape of the first pin to form a first locking structure. The second slot is adapted to the size and shape of the second pin to form a second locking structure.

[0022] Secondly, this application provides a foldable wheeled vehicle, which includes wheels and a foldable frame. The foldable frame is connected to the wheels and includes the aforementioned synchronous movement structure.

[0023] In some embodiments, the carrier frame includes at least two peripheral vertical beams and at least two peripheral horizontal beams. The at least two peripheral vertical beams include a first vertical beam and a second vertical beam. When the carrier frame is folded, the first vertical beam and the second vertical beam are close to each other. The at least two peripheral horizontal beams include a first horizontal beam, which includes a first horizontal beam connector, a first crossbar, and a second crossbar. The first crossbar is a first support rod hinged to the first vertical beam. The second crossbar is a second support rod hinged to the second vertical beam.

[0024] In some embodiments, the carrier includes a foldable chassis, the chassis including a bottom beam connector, a first bottom beam, and a second bottom beam. The first bottom beam is hinged to the lower end of a first vertical beam and connected to the bottom beam connector. The second bottom beam is hinged to the lower end of a second vertical beam and connected to the bottom beam connector.

[0025] In some embodiments, at least two peripheral vertical beams include a third vertical beam. At least two peripheral horizontal beams include a second horizontal beam, which includes a second horizontal beam connector, a third horizontal bar, and a fourth horizontal bar. The third horizontal bar is a first support rod hinged to the first vertical beam. The fourth horizontal bar is a second support rod hinged to the third vertical beam.

[0026] In summary, this application provides a synchronous motion structure that can reduce the risk of parts jamming during motion and has good reliability and controllability.

[0027] Other features of the foldable wheeled vehicle provided in this specification will be partially listed in the following description. The figures and examples presented below will be readily apparent to those skilled in the art. The inventive aspects of the foldable wheeled vehicle provided in this specification can be fully understood through practice or use of the methods, apparatus, and combinations provided in the detailed examples below. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this specification, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This diagram illustrates the structure of a wheeled vehicle after deployment, according to an embodiment of this application.

[0030] Figure 2 This illustration shows a schematic diagram of a partially folded wheeled vehicle according to an embodiment of this application.

[0031] Figure 3 This diagram illustrates the structure of a wheeled vehicle after it is fully folded, according to an embodiment of this application.

[0032] Figure 4 A schematic diagram of the frame structure of a wheeled vehicle according to an embodiment of this application is shown;

[0033] Figure 5 A schematic diagram of the assembly structure of the first crossbeam of a wheeled vehicle according to an embodiment of this application is shown;

[0034] Figure 6 This illustration shows another assembly structure diagram of the first crossbeam of a wheeled vehicle according to an embodiment of this application;

[0035] Figure 7 This paper shows another assembly structure schematic diagram of the first crossbeam of a wheeled vehicle according to an embodiment of the present application;

[0036] Figure 8 A schematic diagram of the relevant structure of a first transmission assembly of a wheeled vehicle according to an embodiment of this application is shown;

[0037] Figure 9 A schematic diagram illustrating the unlocking process of a first locking structure and a second locking structure of a wheeled vehicle according to an embodiment of this application is shown.

[0038] Figure 10This diagram illustrates the structure of a first unlocking end and a first latch of a wheeled vehicle according to an embodiment of this application.

[0039] Figure 11 A cross-sectional structural diagram of the frame of a wheeled vehicle according to an embodiment of this application is shown in a partially folded state, wherein the area within the box is the non-sectioned area;

[0040] Figure 12 A partial structural schematic diagram of the frame of a wheeled vehicle according to an embodiment of this application is shown in a partially folded state;

[0041] Figure 13 A schematic diagram of the linkage structure of a wheeled vehicle according to an embodiment of this application is shown;

[0042] Figure 14 A schematic diagram of the linkage structure of a wheeled vehicle according to an embodiment of this application is shown;

[0043] Figure 15 A schematic diagram of the linkage structure of a wheeled vehicle according to an embodiment of this application is shown; and

[0044] Figure 16 A schematic diagram of the structure of a support connector for a wheeled vehicle according to an embodiment of this application is shown.

[0045] The reference numerals in the detailed embodiments are as follows:

[0046] T1 is the first trajectory; T2 is the second trajectory;

[0047] O11 First drive shaft; O12 Second drive shaft; O13 Third drive shaft; O14 Fourth drive shaft; O15 Fifth drive shaft; O16 Sixth drive shaft;

[0048] O21 First hinge axis; O22 Second hinge axis;

[0049] O31 First pivot; O32 Second pivot; O33 Third pivot; O34 Fourth pivot;

[0050] P1 First transmission unit; P2 Second transmission unit; S1 Reference surface; GD ground;

[0051] L1: Distance between the third and fourth drive shafts; L2: Distance between the third and fifth drive shafts; L3: Distance between the sixth and fourth drive shafts; L4: Distance between the sixth and fifth drive shafts; L5: Distance between the first and third drive shafts; L6: Distance between the second and third drive shafts;

[0052] 001 Wheeled vehicle; 010 Frame; 020 Wheel; 030 First handlebar; 040 Second handlebar; 100 Chassis; 101 First connecting end; 102 Second connecting end; 110 Bottom beam; 110a First bottom beam; 110b Second bottom beam; 110c Third bottom beam; 110d Fourth bottom beam; 111 First section; 112 Second section; 113 Auxiliary bottom beam; 120 Bottom beam connector; 200 Peripheral vertical beam; 2011 First outer shell; 2012 Second outer shell; 2013 Third outer shell; 2014 Fourth outer shell; 202 Accommodation space; 203 First magnetic suction assembly; 204 Second magnetic suction assembly; 206 First support rod; 2063 First moving part; 208 Second support rod; 2083 Second moving part; 210 Vertical tube; 211 Corner connector; 200a First vertical beam; 200b Second vertical beam; 200c Third vertical beam; 200d Fourth vertical beam;

[0053] 300 Side crossbeam; 301 First crossbeam; 3011 First revolute joint; 3012 First locking structure; 3021 Second revolute joint; 3022 Second locking structure; 303 Second crossbeam; 3031 Third revolute joint; 3032 Third locking structure; 3041 Fourth revolute joint; 3042 Fourth locking structure; 305 Third crossbeam; 3051 Fifth revolute joint; 3052 Fifth locking structure; 3061 Sixth revolute joint; 3062 Sixth locking structure; 307 Fourth crossbeam; 3071 Seventh revolute joint; 3072 Seventh locking structure; 3081 Eighth revolute joint; 3082 Eighth locking structure;

[0054] 310 First crossbar; 3111 First positioning post; 3112 Clearance groove; 312 First transverse transmission component; 3121 First transmission end; 3122 First unlocking end; 3123 First guide groove; 3124 Slide rail; 313 First pin; 3131 First part; 3132 Second part; 314 First elastic element; 315 Second positioning post; 316 Second elastic element;

[0055] 320 Second crossbar; 322 Second transverse transmission component; 3221 Second transmission end; 3222 Second unlocking end; 323 Second pin;

[0056] 330 Crossbeam connector; 330a First crossbeam connector; 330b Bracket connector; 331 First slot; 332 Chamfered corner; 333 Second slot; 334 First arc groove; 335 Second arc groove; 336 Linear groove; 3361 First linear groove; 3362 Second linear groove; 337 First sheet; 338 Second sheet;

[0057] 341 Pin; 342 Slot; 343 First locking part; 344 Second locking part;

[0058] 350 Second crossbeam connector; 351 Third crossbar; 352 Fourth crossbar;

[0059] 700a First transmission assembly; 700 First vertical transmission mechanism; 710 Slider; 711 Block; 712 Rod; 720 Lower connecting rod; 730 First upper connecting rod; 731 Second guide groove; 732 Sharp corner; 733 Recess; 740 Second upper connecting rod; 750a Second transmission assembly; 750 Second vertical transmission mechanism; 760 Third transmission assembly; 770 Fourth transmission assembly;

[0060] 800a Synchronous motion structure; 800 Linkage structure; 810 First link; 820 Second link; 830 Third link; 840 Fourth link. Detailed Implementation

[0061] The following description provides specific application scenarios and requirements for this specification, intended to enable those skilled in the art to make and use the contents of this specification. Various partial modifications to the disclosed embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the embodiments shown, but rather to the widest scope consistent with the claims.

[0062] The terminology used herein is for the purpose of describing particular exemplary embodiments only and is not restrictive. For example, unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “the” used herein may also include the plural forms. When used in this specification, the terms “comprising,” “including,” and / or “containing” mean that the associated feature, integer, step, operation, element, and / or component is present, but do not exclude the presence of one or more other features, integers, steps, operations, elements, components, and / or groups, or that other features, integers, steps, operations, elements, components, and / or groups may be added to the system / method.

[0063] Considering the following description, these and other features of this specification, as well as the operation and function of the related components of the structure, and the economy of assembly and manufacture of the parts, can be significantly improved. All of these form part of this specification with reference to the accompanying drawings. However, it should be clearly understood that the drawings are for illustrative and descriptive purposes only and are not intended to limit the scope of this specification. It should also be understood that the drawings are not drawn to scale.

[0064] The flowcharts used in this specification illustrate operations implemented according to some embodiments of this specification. It should be clearly understood that the operations in the flowcharts may not be implemented in a sequential order. Instead, the operations may be implemented in reverse order or simultaneously. Furthermore, one or more additional operations may be added to the flowcharts. One or more operations may be removed from the flowcharts.

[0065] In this specification, "X includes at least one of A, B, or C" means that X includes at least A, or X includes at least B, or X includes at least C. That is, X may include only one of A, B, and C, or any combination of A, B, and C, as well as other possible content / elements. The arbitrary combination of A, B, and C can be A, B, C, AB, AC, BC, or ABC.

[0066] In this specification, unless explicitly stated otherwise, the relationships between structures can be direct or indirect, complete or partial. For example, when describing "A is connected to B," unless explicitly stated that A and B are directly connected, it should be understood that A can be directly connected to B or indirectly connected to B. Similarly, when describing "A is above B," unless explicitly stated that A is directly above B (AB is adjacent and A is above B), it should be understood that A can be directly above B or indirectly above B (AB is separated by other elements, and A is above B). Furthermore, when describing "A is inside B," unless explicitly stated that A is entirely inside B, it should be understood that A can be entirely inside B or partially inside B. And so on.

[0067] When people go shopping or picnicking outdoors, they can use manual wheeled vehicles (shopping carts, camping bikes) to transport daily necessities. These camping bikes need to be foldable for easy movement and storage. For foldable vehicles, the ease of folding, the folded size, and the weight of the folded vehicle all greatly affect the user experience. Existing folding vehicles have a simple design and poor controllability, making folding inconvenient. Therefore, there is a need for a new type of foldable wheeled vehicle.

[0068] This application provides a foldable wheeled vehicle and a synchronous motion structure on a support frame. The foldable wheeled vehicle provided by this application can be a manual trolley, such as a shopping cart, camping vehicle, etc. It is small in size and light in weight, making it suitable for carrying some goods and being pushed by the user.

[0069] To facilitate the description of the wheeled vehicle's structure, unless otherwise specified, this specification describes the structure of the wheeled vehicle in the posture of its wheels standing on the ground. The ground refers to the surface supporting the wheeled vehicle, located below it. Furthermore, in this specification, front, back, left, right, up, and down are defined with the direction the user is facing when pushing the wheeled vehicle 001 as the reference point.

[0070] As an example, Figure 1 A schematic diagram of the deployed structure of a wheeled vehicle (hereinafter referred to as "wheeled vehicle") according to an embodiment of this application is shown. (Reference) Figure 1 The wheeled vehicle 001 may include a foldable frame 010 (hereinafter referred to as "frame 010") and wheels 020.

[0071] As an example, wheel 020 may include two front wheels and two rear wheels, which may be located at the four corners of wheeled vehicle 001.

[0072] The foldable frame 010 is connected to the wheel 020. The foldable frame 010 serves as the skeleton of the wheeled vehicle 001. The foldable frame 010 can be made of metal, such as carbon steel, aluminum alloy, titanium alloy, carbon fiber, etc. The foldable frame 010 can also be made of a combination of different materials; this specification does not limit this. In actual use, the foldable frame 010 can be covered with a flexible material to facilitate loading items. The flexible material can include silk fabric, leather, and imitation leather materials, etc.

[0073] The foldable carrier 010 can be folded. Specifically, the foldable carrier 010 may include a foldable chassis 100 (hereinafter referred to as "chassis 100"), at least two peripheral vertical beams 200 and a plurality of foldable peripheral horizontal beams 300 (hereinafter referred to as "peripheral horizontal beams 300").

[0074] At least two circumferential vertical beams 200 can be vertically arranged above the chassis 100. These at least two circumferential vertical beams 200 can be arranged circumferentially around the outer edge of the chassis 100. Thus, when the foldable carrier 010 is in the unfolded state, the at least two circumferential vertical beams 200 and the chassis 100 can form an accommodating space 202. The at least two circumferential vertical beams 200 are connected to the chassis 100. The circumferential vertical beams 200 and the chassis 100 are linked during folding and unfolding. As an example, during the folding process of the chassis 100, the at least two circumferential vertical beams 200 are pulled closer to each other in both the front-back and left-right directions.

[0075] The chassis 100 is connected to at least two peripheral vertical beams 200. As an example, the chassis 100 connects to the lower end of each peripheral vertical beam 200, forming a columnar accommodating space. When unfolded, the chassis 100 serves as the bottom of this columnar accommodating space and acts as a load-bearing component.

[0076] As an example, chassis 100 may include a plurality of bottom beams 110 and bottom beam connectors 120. The bottom beams 110 may include rigid beams. The plurality of bottom beams 110 are connected to form a chassis frame. Each bottom beam 110 may include a first connecting end 101 and a second connecting end 102. The first connecting end 101 is connected to the bottom beam connector 120, and the second connecting end 102 is connected to the at least two peripheral vertical beams 200. Figure 1 As shown, the plurality of bottom beams 110 radiate outward in a radial pattern with the bottom beam connector 120 as the center.

[0077] refer to Figure 1 When the bottom beam connector 120 moves upward, it drives the first connecting ends 101 (the ends connected to the bottom beam connector 120) of the plurality of bottom beams 110 to move upward, and pulls the at least two peripheral vertical beams 200 closer to each other in the front-back and left-right directions through the second connecting ends 102 of the plurality of bottom beams 110. The peripheral vertical beams 200 and the chassis 100 are linked. When the chassis 100 is folded, the peripheral vertical beams 200 automatically converge under the traction of the bottom beams 110. The folding operation is simple and quick, and highly operable.

[0078] As mentioned earlier, the bottom beam 200 and the bottom beam connector 120 are rotatably connected. The chassis 100 is a load-bearing component. To ensure the stability of the chassis 100 during operation, the bottom beam connector 120 includes a locked state and an unlocked state: in the unlocked state, the second connecting end 102 can rotate relative to the bottom beam connector 120 for easy folding; in the locked state, the second connecting end 102 is fixed relative to the bottom beam connector 120. In the locked state, the bottom beam connector 120 connects the multiple bottom beams 200 into a rigid frame structure. Under load, the bottom beam connector 120 and the bottom beams 200 will not collapse downwards due to the load, allowing the chassis 100 to stably support the load.

[0079] In some embodiments, the chassis 100 may further include a lifting member. For example, the lifting member may be a pull ring. For example, the lifting member may be made of flexible materials such as cloth, silicone, or rope. The lifting member is connected to the bottom beam connector 120 and is used to control the bottom beam connector 120 to switch from a locked state to an unlocked state. For example, the lifting member may be connected to the upper end of the bottom beam connector 120. When the wheeled vehicle 001 needs to be folded, the user pulls the lifting member upwards to unlock the bottom beam connector 120. Continuing to pull the lifting member causes the bottom beam connector 120 to move upwards, thereby pulling at least two peripheral vertical beams 200 together. The user can unlock and fold the vehicle with a single upward pull, making the operation simple, fast, and highly operable.

[0080] A foldable circumferential crossbeam 300 is located between two adjacent circumferential vertical beams 200. The circumferential crossbeam 300 is located at the upper end of the circumferential vertical beam 200. The carrier frame 010 may include at least two circumferential crossbeams 300. The at least two circumferential crossbeams 300 may be arranged circumferentially. Reference Figure 1 The upper ends of two adjacent circumferential vertical beams 200 are connected to circumferential horizontal beams 300. When a flexible material is covered on the foldable carrier 010, the circumferential horizontal beams 300 can serve as a support frame for the flexible material. In some embodiments, detachable hangers / racks / seats and other items can also be installed on the circumferential horizontal beams 300.

[0081] The foldable peripheral crossbeam 300 may include a first crossbar 310, a second crossbar 320, and a crossbeam connector 330. (Reference) Figure 1 One end of the first crossbar 310 and one end of the second crossbar 320 are respectively hinged to the upper ends of two circumferentially adjacent vertical beams (e.g., 200a, 200b), and the other ends of the first crossbar 310 and the second crossbar 320 are respectively hinged to the two ends of the crossbeam connector 330.

[0082] The circumferential crossbeam 300 can be folded. As an example, when folded, the crossbeam connector 330 moves downward, causing the first crossbeam 310 and the second crossbeam 320 to form a V-shape. As the folding progresses, the included angle of the V-shape becomes smaller and smaller. When fully folded, the included angle of the V-shape is close to zero, and the first crossbeam 310 and the second crossbeam 320 are nearly parallel.

[0083] In some embodiments, the crossbeam connector 330 includes a locked state and an unlocked state: in the unlocked state, the first crossbar 310 and the second crossbar 320 can rotate relative to the crossbeam connector 330; in the locked state, the first crossbar 310 and the second crossbar 320 are fixed relative to the crossbeam connector 330. In the locked state, the first crossbar 310, the crossbeam connector 330, and the second crossbar 320 are connected as a rigid beam structure, allowing the peripheral crossbeam 300 to bear a certain load. For example, when the wheeled vehicle 001 is fully deployed, some items can be hung / supported on the peripheral crossbeam 300. At this time, locking the crossbeam connector 330 can prevent the peripheral crossbeam 300 from collapsing downwards due to the load. In the unlocked state, folding operations are facilitated. For example, when starting the folding process, the crossbeam connector 330 is unlocked, and the crossbeam connector 330 falls downwards under its own weight. The surrounding crossbeams 300 can automatically collapse downwards into an inverted V shape. Folding can be achieved without external force, making the operation simple, fast, convenient, and time-saving.

[0084] In some embodiments, the state of the crossbeam connector 330 is associated with the state of the foldable chassis 100. For example, the state of the crossbeam connector 330 is associated with the orientation of the chassis 100. For example, when the chassis 100 is folded, the crossbeam connector 330 is unlocked; when the chassis 100 is fully unfolded, the crossbeam connector 330 is locked. For example, the wheeled vehicle 001 may also include a transmission structure (i.e., at least one transmission component described below). One end of the transmission structure is connected to the foldable chassis 100, and the other end controls the crossbeam connector 330 to switch between a locked and unlocked state. Changes in the orientation of the chassis 100 affect the state of the crossbeam connector 330 through the transmission structure.

[0085] As mentioned earlier, when the wheeled vehicle 001 needs to be folded, the user pulls the lifting member upwards to unlock the bottom beam connector 120. Continuing to pull the lifting member causes the bottom beam connector 120 to move upwards. This upward movement causes the second connecting end 102 of the bottom beam 110 (the end connected to the peripheral vertical beam 200, i.e., the outer end) to converge towards the bottom beam connector 120. Simultaneously, the position of the bottom beam 110 changes, unlocking the crossbeam connector 330 via the transmission structure. After the crossbeam connector 330 is unlocked, with the folding of the chassis 100 and the influence of gravity, the peripheral crossbeam 300 automatically collapses and folds downwards. The user can unlock and fold the vehicle with a single upward pull, making the operation simple, quick, and highly operable.

[0086] In some embodiments, the transmission structure is at least partially located within the peripheral vertical beam 200; and / or the transmission structure is at least partially located within the peripheral horizontal beam 300. For example, the peripheral vertical beam 200 and the peripheral horizontal beam 300 may comprise hollow tube structures, within which the transmission structure may be arranged. From an aesthetic perspective, minimizing the exposure of the transmission structure not only improves the appearance but also keeps the frame and wiring of the wheeled vehicle 001 neat and tidy.

[0087] In some embodiments, the wheeled vehicle 001 includes a foldable handlebar (hereinafter referred to as the "handlebar"). The handlebar may be located at the front end of the wheeled vehicle 001 and serve as a pull rod. The handlebar may also be located at the rear end of the wheeled vehicle 001 and serve as a push rod.

[0088] As an example, a first handlebar 030 can be connected to the front end of the carrier 010 and used as a pull rod. A second handlebar 040 is connected to the rear end of the carrier 010 and used as a push rod. The second handlebar 040 is opposite to the first handlebar 030 in the front-to-back direction. Both the second handlebar 040 and the first handlebar 030 are configured to be foldable in the left-to-right direction. When the user pulls the chassis connector 120 upward, the chassis 100 folds. When the chassis 100 folds, it drives at least two peripheral vertical beams 200 to automatically converge and fold, drives at least two peripheral horizontal beams 300 to automatically fold, and drives the first handlebar 030 and the second handlebar 040 to automatically fold.

[0089] The structure of the carrier 010 is described in detail below.

[0090] Figure 1 A schematic diagram of the structure of a wheeled vehicle after deployment, according to an embodiment of this application, is shown. Figure 2 A schematic diagram of the structure of a wheeled vehicle after partial folding is shown according to an embodiment of this application. Figure 3 A schematic diagram of the structure of a wheeled vehicle after being fully folded according to an embodiment of this application is shown. Figure 4 A schematic diagram of the frame of a wheeled vehicle according to an embodiment of this application is shown. As an example, such as... Figures 1 to 4 As shown, in the embodiments described below, the at least two peripheral vertical beams 200 include four vertical beams, the chassis 100 includes four bottom beams 110, and the peripheral horizontal beams 300 include four horizontal beams.

[0091] The four vertical beams include a first vertical beam 200a, a second vertical beam 200b, a third vertical beam 200c, and a fourth vertical beam 200d. These beams are connected to the four corners of the chassis 100, respectively. During the folding process of the chassis 100, the first vertical beam 200a, the second vertical beam 200b, the third vertical beam 200c, and the fourth vertical beam 200d move closer together.

[0092] In some embodiments, the wheeled vehicle 001 includes a first outer shell 2011, a second outer shell 2012, a third outer shell 2013, and a fourth outer shell 2014. The first outer shell 2011 is located on a first vertical beam 200a, the second outer shell 2012 is located on a second vertical beam 200b, the third outer shell 2013 is located on a third vertical beam 200c, and the fourth outer shell 2014 is located on a fourth vertical beam 200d. The first outer shell 2011, the second outer shell 2012, the third outer shell 2013, and the fourth outer shell 2014 are respectively located on the outer surfaces of the four corners of the frame 010 to conceal the internal structure of the frame 010.

[0093] The cross-sections of the first outer shell 2011, the second outer shell 2012, the third outer shell 2013, and the fourth outer shell 2014 on the horizontal plane can be L-shaped or arc-shaped. During the folding process of the carrier frame 010, the first outer shell 2011, the second outer shell 2012, the third outer shell 2013, and the fourth outer shell 2014 move closer to each other, thereby surrounding the carrier frame 010. The first outer shell 2011, the second outer shell 2012, the third outer shell 2013, and the fourth outer shell 2014 can increase structural strength, protect the carrier frame 010, and improve its appearance.

[0094] In some embodiments, the wheeled vehicle 001 includes corresponding first magnetic attraction component 203 and second magnetic attraction component 204. When the wheeled vehicle 001 is in a folded state, the first magnetic attraction component 203 and the second magnetic attraction component 204 can attract each other through magnetic force to restrict the wheeled vehicle 001 from unfolding, so that the vehicle maintains structural stability in the folded state.

[0095] In some embodiments, a first magnetic attraction component 203 is disposed on a first vertical beam 200a, and a second magnetic attraction component 204 is disposed on a second vertical beam 200b. For example, the first magnetic attraction component 203 is disposed on a first housing 2011, and the second magnetic attraction component 204 is disposed on a second housing 2012.

[0096] In some embodiments, the first magnetic traction component 203 is disposed on the third vertical beam 200c, and the second magnetic traction component 204 is disposed on the fourth vertical beam 200d. For example, the first magnetic traction component 203 is disposed on the third housing 2013, and the second magnetic traction component 204 is disposed on the fourth housing 2014, for connecting the third housing 2013 and the fourth housing 2014 when the wheeled vehicle 001 is in a folded state.

[0097] In other embodiments, the first magnetic attraction component 203 may be disposed on the first vertical beam 200a, and the second magnetic attraction component 204 may be disposed on the third vertical beam 200c. Alternatively, the first magnetic attraction component 203 may be disposed on the second vertical beam 200b, and the second magnetic attraction component 204 may be disposed on the fourth vertical beam 200d.

[0098] like Figure 1 As shown, the four bottom beams 110 include a first bottom beam 110a, a second bottom beam 110b, a third bottom beam 110c, and a fourth bottom beam 110d; the first bottom beam 110a is hinged to the lower end of the first vertical beam 200a; the second bottom beam 110b is hinged to the lower end of the second vertical beam 200b; the third bottom beam 110c is hinged to the lower end of the third vertical beam 200c; and the fourth bottom beam 110d is hinged to the lower end of the fourth vertical beam 200d.

[0099] The bottom beam connector 120 connects the four bottom beams 110 to form a chassis frame. In the unfolded state of the chassis 100, the four bottom beams form an X-shape. As an example, the bottom beam connector 120 is located in the middle of the chassis 100. All four bottom beams 110 are connected to the bottom beam connector 120. Further, the first bottom beam 110a is hinged to the bottom beam connector 120; the second bottom beam 110b is hinged to the bottom beam connector 120; the third bottom beam 110c is hinged to the bottom beam connector 120; and the fourth bottom beam 110d is hinged to the bottom beam connector 120.

[0100] The four crossbeams include a first crossbeam 301, a second crossbeam 303, a third crossbeam 305, and a fourth crossbeam 307. The first crossbeam 301 connects the upper ends of the first vertical beam 200a and the second vertical beam 200b. The second crossbeam 303 connects the upper ends of the first vertical beam 200a and the third vertical beam 200c. The third crossbeam 305 connects the upper ends of the third vertical beam 200c and the fourth vertical beam 200d. The fourth crossbeam 307 connects the upper ends of the fourth vertical beam 200d and the second vertical beam 200b.

[0101] The first crossbeam 301 and the second crossbeam 303 extend in different directions. The first crossbeam 301 and the third crossbeam 305 extend in the same direction, and the second crossbeam 303 and the fourth crossbeam 307 extend in the same direction. For example, the first crossbeam 301 and the third crossbeam 305 both extend in the front-to-back direction, while the second crossbeam 303 and the fourth crossbeam 307 both extend in the left-to-right direction. The lengths of the first crossbeam 301 and the second crossbeam 303 can be the same or different.

[0102] In some embodiments, the first crossbeam 301 and the third crossbeam 305 are both configured to be foldable, while the second crossbeam 303 and the fourth crossbeam 307 are both rigid beam structures. During the folding process of the wheeled vehicle 001, the first vertical beam 200a and the second vertical beam 200b move closer together, the third vertical beam 200c and the fourth vertical beam 200d move closer together, the distance between the first vertical beam 200a and the third vertical beam 200c remains unchanged, and the distance between the fourth vertical beam 200d and the second vertical beam 200b remains unchanged.

[0103] In other embodiments, the first crossbeam 301, the second crossbeam 303, the third crossbeam 305, and the fourth crossbeam 307 are all configured to be foldable. The first crossbeam 301, the second crossbeam 303, the third crossbeam 305, and the fourth crossbeam 307 are configured to fold synchronously or nearly synchronously to allow the vehicle to switch between an unfolded state and a folded state.

[0104] The first crossbeam 301 is hinged to the first vertical beam 200a and to the second vertical beam 200b. The second crossbeam 303 is hinged to the first vertical beam 200a and to the third vertical beam 200c. The third crossbeam 305 is hinged to the third vertical beam 200c and to the fourth vertical beam 200d. The fourth crossbeam 307 is hinged to the second vertical beam 200b and to the fourth vertical beam 200d. During the folding process of the wheeled vehicle 001, the first crossbeam 301, the second crossbeam 303, the third crossbeam 305, and the fourth crossbeam 307 all fold to allow the first vertical beam 200a, the second vertical beam 200b, the third vertical beam 200c, and the fourth vertical beam 200d to approach each other.

[0105] For illustration, in the following embodiments, the first crossbeam 301, the second crossbeam 303, the third crossbeam 305, and the fourth crossbeam 307 are all configured to be foldable. In summary, when the wheeled vehicle 001 is in the unfolded state, the bottom beam connector 120 is located at the bottom of the center position of the wheeled vehicle 001. During the folding process of the wheeled vehicle 001, the bottom beam connector 120 moves upward. The bottom beam connector 120 drives the first bottom beam 110a, the second bottom beam 110b, the third bottom beam 110c, and the fourth bottom beam 110d to move towards the center position of the wheeled vehicle 001, and also drives the first vertical beam 200a, the second vertical beam 200b, the third vertical beam 200c, and the fourth vertical beam 200d to move towards the center position of the wheeled vehicle 001, and drives the first crossbeam 301, the second crossbeam 303, the third crossbeam 305, and the fourth crossbeam 307 to fold and move towards the center position of the wheeled vehicle 001.

[0106] The following details the structure of the first crossbeam 301. The structures of the second crossbeam 303, the third crossbeam 305, and the fourth crossbeam 307 can be set with reference to the structure of the first crossbeam 301.

[0107] like Figure 4 As shown, the first crossbeam 301 includes a first rotating joint 3011, and is foldable by relative rotation of the first rotating joint 3011. The carrier frame 010 includes at least one locking structure. The at least one locking structure is located on the first crossbeam 301 and has a locked state and an unlocked state. When locked, the at least one locking structure restricts relative rotation of the first rotating joint 3011, thereby restricting the folding of the first crossbeam 301. When unlocked, the at least one locking structure allows relative rotation of the first rotating joint 3011, thereby allowing the first crossbeam 301 to fold. When the wheeled vehicle 001 is in the deployed state, the locking state of the at least one locking structure ensures the structural stability of the wheeled vehicle 001.

[0108] The following are several specific implementation methods of the first crossbeam 301.

[0109] (one) Figure 5 A schematic diagram of the assembly structure of the first crossbeam of a wheeled vehicle according to an embodiment of this application is shown. Figure 5 As shown, the first crossbeam 301 includes a first crossbar 310 and a second crossbar 320. Neither the first crossbar 310 nor the second crossbar 320 can be bent. The first crossbar 310 and the second crossbar 320 are hinged to form a first revolute joint 3011.

[0110] The first crossbar 310 is hinged to the first vertical beam 200a, and the second crossbar 320 is hinged to the second vertical beam 200b. At least one locking structure includes a first locking structure 3012 configured to restrict relative rotation between the first crossbar 310 and the second crossbar 320 in a locked state. For example, the first locking structure 3012 includes a pin 341 and a slot 342. The pin 341 is movably disposed on the first crossbar 310, and the second crossbar 320 is provided with a slot 342 adapted to the pin 341. When the pin 341 is inserted into the slot 342, it can restrict relative rotation between the first crossbar 310 and the second crossbar 320, thereby locking the first crossbar 301.

[0111] (two) Figure 6 This diagram illustrates another assembly structure of the first crossbeam of a wheeled vehicle according to an embodiment of this application. Figure 6 As shown, the first crossbeam 301 includes a first crossbar 310 and a second crossbar 320. The first crossbar 310 and the second crossbar 320 can be folded by bending. The ends of the first crossbar 310 and the ends of the second crossbar 320 are hinged to form a first revolute joint 3011.

[0112] The first crossbar 310 is hinged to the first vertical beam 200a, and the second crossbar 320 is hinged to the second vertical beam 200b. At least one locking structure includes three first locking structures 3012. When the wheeled vehicle 001 is in the deployed state, the three first locking structures 3012 can restrict the relative rotation of the first crossbar 310 and the second crossbar 320, restrict the bending and folding of the first crossbar 310, and restrict the bending and folding of the second crossbar 320, thereby locking the first crossbar 310 and the second crossbar 320.

[0113] (three) Figure 7 A schematic diagram of another assembly structure of the first crossbeam of a wheeled vehicle according to an embodiment of this application is shown. Figure 7 As shown, the first crossbeam 301 also includes a second revolute joint 3021, and is foldable by relative rotation of the second revolute joint 3021. For example, the first crossbeam 301 includes a first crossbar 310, a second crossbar 320, and a first crossbeam connector 330a.

[0114] The first crossbar 310 is hinged to the first vertical beam 200a. The first crossbar 310 is also hinged to the first crossbeam connector 330a to form a first revolute joint 3011. The second crossbar 320 is hinged to the second vertical beam 200b. The second crossbar 320 is also hinged to the first crossbeam connector 330a to form a second revolute joint 3021.

[0115] In some embodiments, such as Figure 7As shown, at least one locking structure includes a first locking structure 3012. The first locking structure 3012 is configured to restrict the relative rotation of a first rotating joint 3011 and also restrict the relative rotation of a second rotating joint 3021 when in a locked state. The first locking structure 3012 includes a first locking part 343 and a second locking part 344. The first locking part 343 is disposed on a first crossbar 310, and the second locking part 344 is disposed on a second crossbar 320. The first locking part 343 and the second locking part 344 are detachably connected. When the first locking part 343 and the second locking part 344 are connected, they are relatively fixed, thereby restricting the relative movement of the first crossbar 310 and the second crossbar 320, and thus restricting the folding of the first crossbeam 301. At this time, the relative rotation of the first rotating joint 3011 and the relative rotation of the second rotating joint 3021 are both restricted. Further, the first locking structure 3012 is based on at least one of a pin structure, a snap-fit ​​structure, or a magnetic structure. For example, the first locking part 343 and the second locking part 344 can be connected magnetically or by snap-fit. Alternatively, the first locking part 343 and the second locking part 344 can be connected by a pin structure.

[0116] In other embodiments, at least one locking structure includes a first locking structure 3012 and a second locking structure 3022. The first locking structure 3012 is disposed at a first revolute joint 3011 and configured to restrict relative rotation of the first revolute joint 3011 in a locked state. The second locking structure 3022 is disposed at a second revolute joint 3021 and configured to restrict relative rotation of the second revolute joint 3021 in a locked state. When the wheeled vehicle 001 is in the deployed state, the first locking structure 3012 can lock the first crossbar 310 to the first crossbeam connector 330a, and the second locking structure 3022 can lock the second crossbar 320 to the first crossbeam connector 330a. Therefore, the first locking structure 3012 and the second locking structure 3022 can lock the first crossbeam 301.

[0117] The first crossbar 310 and the first crossbeam connector 330a can also form a first locking structure 3012 through other means, and the second crossbar 320 and the first crossbeam connector 330a can also form a second locking structure 3022 through other means, which will not be elaborated here.

[0118] As an illustration, in the embodiments described below, the first crossbeam 301 includes a first rotating joint 3011, a first locking structure 3012, a second rotating joint 3021, and a second locking structure 3022.

[0119] Figure 8 A schematic diagram of the relevant structure of a first transmission assembly of a wheeled vehicle according to an embodiment of this application is shown. Figure 9A schematic diagram illustrating the unlocking process of a first locking structure and a second locking structure of a wheeled vehicle according to an embodiment of this application is shown. In some embodiments, such as Figure 4 , Figure 8 and Figure 9 As shown, the first locking structure 3012 is based on a pin structure, and the second locking structure 3022 is also based on a pin structure. The following details the structure of the first locking structure 3012; the second locking structure 3022 can be configured with reference to the first locking structure 3012.

[0120] In some embodiments, such as Figure 4 , Figure 8 and Figure 9 As shown, the carrier 010 includes a first pin 313, which is movably disposed on the first crossbar 310. The first crossbeam connector 330a is provided with a first slot 331, which is adapted to the size and shape of the first pin 313 to form a first locking structure 3012.

[0121] When the first pin 313 is in the first slot 331, the first locking structure 3012 is in a locked state, which restricts the first crossbar 310 from rotating relative to the first crossbeam connector 330a. When the first pin 313 is in the first slot 331, the first locking structure 3012 is in an unlocked state, which allows the first crossbar 310 to rotate relative to the first crossbeam connector 330a.

[0122] In other embodiments, the first crossbar 310 may be provided with a first slot 331, and the first crossbeam connector 330a may be provided with a first pin 313. As an illustration, in the following embodiments, the first pin 313 is provided on the first crossbar 310, and the first slot 331 is provided on the first crossbeam connector 330a.

[0123] In some embodiments, the wheeled vehicle 001 further includes at least one transmission component. The transmission component may be based on at least one of a linkage slider structure, a spring, a cable, or a chain. At least one transmission component is movably disposed on the frame 010 and connected to at least one locking structure to actuate the at least one locking structure to unlock.

[0124] For example, in the embodiment where a rotating joint is provided in the first crossbeam 301, a locking structure can be provided to restrict the folding of the first crossbeam 301. Correspondingly, a transmission component can be provided to drive the locking structure to unlock.

[0125] For example, a transmission component connects to at least two locking structures to synchronously unlock the at least two locking structures. Alternatively, at least two transmission components connect to one locking structure to jointly unlock the same locking structure. Or, at least two transmission components connect to at least two locking structures to unlock the at least two locking structures. As illustrations, the following describes various embodiments illustrating the correspondence between transmission components and locking structures.

[0126] In some embodiments, at least one transmission component connects all the locking structures to synchronously unlock all the locking structures. Each transmission component may include an unlocking end and a transmission end, the unlocking end being connected to the corresponding locking structure, and the transmission ends of different transmission components being connected to each other so that the user can apply force to each transmission component through the transmission end.

[0127] In some embodiments, at least one transmission component connects the chassis 100 and at least one locking structure, and is configured to move with the folding action of the chassis 100, thereby unlocking the at least one locking structure.

[0128] In some embodiments, two transmission components are connected to a locking structure to jointly unlock the locking structure. This unlocking method is suitable for scenarios where the locking structure is relatively complex. For example, at least one transmission component includes a first transmission component 700a and a second transmission component 750a. Both the first transmission component 700a and the second transmission component 750a are connected to the chassis 100 and the first locking structure 3012, and are configured to move with the folding action of the chassis 100, thereby unlocking the first locking structure 3012. For example, the first locking structure 3012 includes a pin structure and a latch structure. The first transmission component 700a is used to unlock the pin structure, and the first transmission component 700a is used to unlock the latch structure. For example, both the first transmission component 700a and the second transmission component 750a are connected to a first bottom beam 110a, and both move with the rotation of the first bottom beam 110a, thereby unlocking the first locking structure 3012.

[0129] In some embodiments, two transmission components connect two locking structures to unlock the two locking structures. For example, at least one transmission component includes a first transmission component 700a and a second transmission component 750a. The first transmission component 700a connects the chassis 100 and the first locking structure 3012 and is configured to move with the folding action of the chassis 100, thereby unlocking the first locking structure 3012. The second transmission component 750a connects the chassis 100 and the second locking structure 3022 and is configured to move with the folding action of the chassis 100, thereby unlocking the second locking structure 3022. For example, the first transmission component 700a connects to a first bottom beam 110a and moves with the rotation of the first bottom beam 110a, thereby unlocking the first locking structure 3012. The second transmission component 750a connects to a second bottom beam 110b and moves with the rotation of the second bottom beam 110b, thereby unlocking the second locking structure 3022.

[0130] In some embodiments, the second crossbeam 303 includes a third revolute joint 3031 and is foldable by relative rotation of the third revolute joint 3031. The carrier 010 includes a third locking structure 3032 disposed at the third revolute joint 3031 and configured to restrict relative rotation of the third revolute joint 3031 in a locked state. The third locking structure 3032 may be based on a pin structure.

[0131] The first transmission assembly 700a connects the chassis 100, the first locking structure 3012, and the third locking structure 3032. The first transmission assembly 700a is configured to move with the folding motion of the chassis 100, thereby unlocking both the first locking structure 3012 and the third locking structure 3032. For example, the first transmission assembly 700a is connected to the first bottom beam 110a and moves with the rotation of the first bottom beam 110a, causing the first locking structure 3012 and the third locking structure 3032 to unlock synchronously. This allows one transmission assembly to unlock two locking structures, simplifying the structure of the wheeled vehicle 001.

[0132] Furthermore, such as Figure 4 As shown, the second crossbeam 303 also includes a fourth rotating joint 3041, and can be folded by the relative rotation of the third rotating joint 3031 and the relative rotation of the fourth rotating joint 3041. The carrier 010 includes a fourth locking structure 3042, which is disposed at the fourth rotating joint 3041 and configured to restrict the relative rotation of the fourth rotating joint 3041 in the locked state.

[0133] For example, such as Figure 4As shown, the second crossbeam 303 includes a second crossbeam connector 350, a third crossbar 351, and a fourth crossbar 352. The third crossbar 351 is hinged to the first vertical beam 200a. The third crossbar 351 is also hinged to the second crossbeam connector 350 to form a third revolute joint 3031. The fourth crossbar 352 is hinged to the third vertical beam 200c. The fourth crossbar 352 is hinged to the second crossbeam connector 350 to form a fourth revolute joint 3041. When the wheeled vehicle 001 is in the deployed state, the third locking structure 3032 can restrict the relative rotation between the third crossbar 351 and the second crossbeam connector 350, and the fourth locking structure 3042 can restrict the relative rotation between the fourth crossbar 352 and the second crossbeam connector 350. Detailed embodiments of the third locking structure 3032 and the fourth locking structure 3042 can be found in the description of the first locking structure 3012 described above, and will not be repeated here.

[0134] In addition, such as Figure 4 As shown, similar to the structure of the first crossbeam 301, the third crossbeam 305 also includes a fifth revolute joint 3051 and a sixth revolute joint 3061, and the fourth crossbeam 307 also includes a seventh revolute joint 3071 and an eighth revolute joint 308. The carrier frame 010 includes a fifth locking structure 3052, a sixth locking structure 3062, a seventh locking structure 3072, and an eighth locking structure 3082.

[0135] The third crossbeam 305 is foldable by the relative rotation of the fifth revolute joint 3051 and the relative rotation of the sixth revolute joint 3061. The fifth locking structure 3052 is configured to restrict the relative rotation of the fifth revolute joint 3051, and the sixth locking structure 3062 is configured to restrict the relative rotation of the sixth revolute joint 3061, thereby locking the third crossbeam 305.

[0136] The fourth crossbeam 307 is foldable by the relative rotation of the seventh revolute joint 3071 and the relative rotation of the eighth revolute joint 3081. The seventh locking structure 3072 is configured to restrict the relative rotation of the seventh revolute joint 3071, and the eighth locking structure 3082 is configured to restrict the relative rotation of the eighth revolute joint 3081, thereby locking the fourth crossbeam 307.

[0137] For detailed implementations of the fifth locking structure 3052, the sixth locking structure 3062, the seventh locking structure 3072 and the eighth locking structure 3082, please refer to the relevant description of the first locking structure 3012 above, and they will not be repeated here.

[0138] like Figure 4As shown, the carrier 010 may further include a third transmission assembly 760 and a fourth transmission assembly 770. The second transmission assembly 750a is connected to the second bottom beam 110b, the second locking structure 3022, and the eighth locking structure 3082, and is configured to move with the rotation of the second bottom beam 110b, thereby unlocking the second locking structure 3022 and the eighth locking structure 3082. The third transmission assembly 760 is connected to the third bottom beam 110b, the fourth locking structure 3042, and the fifth locking structure 3052, and is configured to move with the rotation of the second bottom beam 110b, thereby unlocking the fourth locking structure 3042 and the fifth locking structure 3052. The fourth transmission assembly 770 is connected to the fourth bottom beam 110b, the sixth locking structure 3062, and the seventh locking structure 3072, and is configured to move with the rotation of the fourth bottom beam 110b, thereby unlocking the sixth locking structure 3062 and the seventh locking structure 3072.

[0139] This simplifies user operation, allowing the user to control the chassis 100 to simultaneously unlock the locking mechanisms. Specifically, in the initial stage of chassis 100 folding, the chassis 100 uses multiple transmission components to simultaneously unlock the locking mechanisms, allowing at least two peripheral crossbeams 300 to fold, thereby allowing at least two peripheral vertical beams 200 to move closer together. After all locking mechanisms are simultaneously unlocked, the chassis 100 continues to fold, causing at least two peripheral vertical beams 200 to move closer together and folding at least two peripheral crossbeams 300.

[0140] Of course, some of the above locking structures can be omitted depending on the actual situation.

[0141] The following details the structure of the first transmission assembly 700a. The structures of the second transmission assembly 750a, the third transmission assembly 760, and the fourth transmission assembly 770 can be found in the description of the first transmission assembly 700a.

[0142] In some embodiments, the first transmission assembly 700a includes a first vertical transmission mechanism 700 and a first lateral transmission member 312. The first vertical transmission mechanism 700 is movably disposed on the first vertical beam 200a and connected to the chassis 100. The first lateral transmission member 312 is movably disposed on the first crossbar 310 and connects the first vertical transmission mechanism 700 and the first pin 313. For example, the first vertical transmission mechanism 700 extends along the extension direction of the first vertical beam 200a, and the first lateral transmission member 312 extends along the extension direction of the first crossbar 310.

[0143] The following describes in detail the relevant structure of the first transverse transmission component 312.

[0144] like Figure 4 , Figure 8 and Figure 9As shown, a first lateral transmission member 312 is movably disposed on a first crossbar 310, including a first transmission end 3121 and a first unlocking end 3122. A first pin 313 is disposed on the first unlocking end 3122. The first transmission end 3121 is connected to a first vertical transmission mechanism 700. The first vertical transmission mechanism 700 is indirectly connected to a first locking structure 3012 through the first transmission end 3121.

[0145] In the initial stage of the chassis 100 folding process, the movement of the chassis 100 will drive the first vertical transmission mechanism 700 and the first horizontal transmission member 312 to move, causing the first pin 313 to disengage from the first slot 331. In the stage where the chassis 100 is about to finish unfolding, the movement of the chassis 100 will drive the first vertical transmission mechanism 700 and the first horizontal transmission member 312 to move, causing the first pin 313 to insert into the first slot 331.

[0146] Furthermore, the first crossbar 310 is tubular, and the first lateral transmission member 312 is located inside the first crossbar 310. This allows for a "hidden installation" of the first lateral transmission member 312, resulting in a more aesthetically pleasing and compact appearance for the wheeled vehicle 001. The first portion 3131 of the first pin 313 connects to the first lateral transmission member 312 within the first crossbar 310 and is adapted to the dimensions and shape of the inner surface of the first crossbar 310. The second portion 3132 of the first pin 313 is located outside the first crossbar 310. The second portion 3132 of the first pin 313 is cylindrical, and when the second portion 3132 of the first pin 313 is located within the first slot 331, the first pin 313 can restrict the rotation of the first crossbar 310.

[0147] Figure 10 A schematic diagram of the structure of a first unlocking end and a first latch of a wheeled vehicle provided according to an embodiment of this application is shown.

[0148] In some embodiments, Figures 8 to 10 As shown, the first crossbar 310 is provided with a relief groove 3112, which extends along the extension direction of the first crossbar 310. The first pin 313 movably passes through the relief groove. During the process of disengaging from or inserting into the first slot 331, the second part 3132 of the first pin 313 slides along the extension direction of the relief groove 3112.

[0149] In some embodiments, such as Figures 8 to 10 As shown, the first transmission assembly 700a includes a first elastic element 314. The first elastic element 314 abuts against the first transverse transmission element 312 and the first crossbar 310. When the first elastic element 314 recovers its elastic deformation, it drives the first transverse transmission element 312 and the first pin 313 to move relative to the first crossbar 310.

[0150] In some embodiments, such as Figures 8 to 10As shown, the end of the first elastic member 314 near the first slot 331 abuts against the first crossbar 310, and the end of the first elastic member 314 away from the first slot 331 abuts against the first lateral transmission member 312. When the wheeled vehicle 001 is in the unfolded state, the first locking structure 3012 is in the locked state, and the first elastic member 314 is in a state of elastic deformation. In the early stage of the folding process of the wheeled vehicle 001, the first elastic member 314 recovers its elastic deformation and drives the first lateral transmission member 312 away from the first slot 331, thereby driving the first pin 313 to disengage from the first slot 331, thus unlocking the first locking structure 3012.

[0151] In other embodiments, the end of the first elastic member 314 near the first slot 331 abuts against the first lateral transmission member 312, and the end of the first elastic member 314 away from the first slot 331 abuts against the first crossbar 310. When the wheeled vehicle 001 is in the non-deployed state, the first elastic member 314 is in a state of elastic deformation. In the later stage of the deployment process of the wheeled vehicle 001, the first elastic member 314 recovers its elastic deformation and drives the first pin 313 to insert into the first slot 331 through the first lateral transmission member 312, so that the first locking structure 3012 enters the locked state.

[0152] In some embodiments, such as Figures 8 to 10 As shown, the first transverse transmission member 312 is provided with a first guide groove 3123, which extends along the extension direction of the first crossbar 310. The first crossbar 310 is provided with a first positioning post 3111, which is movably located within the first guide groove 3123. The first elastic member 314 is located within the first guide groove 3123 and abuts against the first transverse transmission member 312 and the first positioning post 3111.

[0153] In some embodiments, such as Figures 8 to 10 As shown, the end of the first elastic member 314 near the first slot 331 abuts against the first positioning post 3111, and the end of the first elastic member 314 away from the first slot 331 abuts against the first lateral transmission member 312. In other embodiments, the end of the first elastic member 314 near the first slot 331 abuts against the first lateral transmission member 312, and the end of the first elastic member 314 away from the first slot 331 abuts against the first positioning post 3111.

[0154] Furthermore, the first crossbar 310 is provided with a through hole, and the first positioning pin 3111 is pin-shaped and passes through the through hole. The first positioning pin 3111 facilitates the contact between the first lateral transmission member 312 and the first crossbar 310. The first guide groove 3123 allows the first lateral transmission member 312 to avoid the first positioning pin 3111, thus allowing relative movement between the first lateral transmission member 312 and the first crossbar 310.

[0155] In some embodiments, such as Figures 8 to 10 As shown, the first transverse transmission member 312 is slidably connected to the first pin 313. For example, the first unlocking end 3122 includes a slide rail 3124, which extends along the extension direction of the first crossbar 310. A portion of the structure of the first pin 313 is movably disposed within the slide rail 3124. When the first crossbar 310 rotates relative to the first crossbeam connector 330a, the first pin 313 can move along the slide rail 3124 in a direction away from the first crossbeam connector 330a, thus reducing the risk of the first pin 313 and the first crossbeam connector 330a getting stuck together.

[0156] The first crossbar 310 includes a second elastic element 316. The second elastic element 316 abuts against the first lateral transmission member 312 and the first pin 313, and is used to drive the first pin 313 toward the first slot 331 when it recovers from elastic deformation. The first lateral transmission member 312 can be elastically connected to the first pin 313 through the second elastic element 316, which facilitates the first lateral transmission member 312 to drive the first pin 313 to move. In some embodiments, the second elastic element 316 can also provide power for the first pin 313 to insert into the first slot 331.

[0157] In other embodiments, the first pin 313 is fixed to the first unlocking end 3122.

[0158] In some embodiments, such as Figures 8 to 10 As shown, the first slot 331 is located at one end of the first crossbeam connector 330a near the first vertical beam 200a, and the opening of the first slot 331 faces the first vertical beam 200a. When the first locking structure 3012 switches from the unlocked state to the locked state, the first transverse transmission member 312 and the first pin 313 can move in a direction away from the first vertical beam 200a until the first pin 313 is inserted into the first slot 331.

[0159] In some embodiments, such as Figures 8 to 10 As shown, the edge of the first crossbeam connector 330a includes an arc-shaped chamfer 332, which is located above the first slot 331 and adjacent to the opening of the first slot 331. After the first pin 313 disengages from the first slot 331, it can be located on the periphery of the arc-shaped chamfer 332. During the rotation of the first crossbar 310 relative to the first crossbeam connector 330a, the first pin 313 can move along the outer edge of the arc-shaped chamfer 332. The arc-shaped chamfer 332 reduces the risk of interference between the first pin 313 and the first crossbeam connector 330a.

[0160] like Figure 4As shown, the lower end of the first vertical transmission mechanism 700 is connected to the first bottom beam 110b, and the upper end of the first vertical transmission mechanism 700 is indirectly connected to the first locking structure 3012 and the third locking structure 3032. The first vertical transmission mechanism 700 moves with the rotation of the first bottom beam 110b, so that the first locking structure 3012 and the third locking structure 3032 can be unlocked synchronously. This simplifies the structure of the wheeled vehicle 001. The relevant structure of the first vertical transmission mechanism 700 is described in detail below.

[0161] In some embodiments, such as Figure 8 As shown, the first vertical transmission mechanism 700 includes a slider 710, a lower connecting rod 720, a first upper connecting rod 730, and a second upper connecting rod 740. The slider 710 is movably disposed on the first vertical beam 200a along its extension direction. The first upper connecting rod 730 is connected to the first transverse transmission member 312 and hinged to the slider 710. For example, the upper end of the first upper connecting rod 730 can abut against the first transmission end 3121, and the lower end of the first upper connecting rod 730 is hinged to the slider 710. The second upper connecting rod 740 is connected to the third locking structure 3032 and hinged to the slider 710. The upper end of the lower connecting rod 720 is hinged to the slider 710, and the lower end of the lower connecting rod 720 is hinged to the chassis 100.

[0162] When the chassis 100 folds, it causes the slider 710 to move downwards, which in turn causes the first upper connecting rod 730 and the second upper connecting rod 740 to move downwards simultaneously. As the first upper connecting rod 730 moves downwards, it also moves away from the first slot 331, thereby enabling the first lateral transmission member 312 to disengage the first pin 313 from the first slot 331 and unlock the first locking structure 3012. Similarly, the downward movement of the second upper connecting rod 740 can unlock the third locking structure 3032.

[0163] In some embodiments, such as Figure 8 As shown, the slider 710 includes two blocks 711 and a rod 712. The rod 712 extends along the extension direction of the first vertical beam 200a and is fixedly connected to the two blocks 711. The shape and size of the two blocks 711 are adapted to the vertical tube 210, so that they can slide along the vertical tube 210.

[0164] In some embodiments, the first vertical beam 200a includes a vertical tube 210, with a slider 710 located inside the vertical tube 210. The lower connecting rod 720, the first upper connecting rod 730, and the second upper connecting rod 740 all pass through the wall of the vertical tube 210. This allows for a "hidden installation" of the slider 710, resulting in a more aesthetically pleasing and compact wheeled vehicle 001. In other embodiments, the slider 710 is cylindrical and fits around the outer periphery of the first vertical beam 200a. This facilitates assembly.

[0165] In some embodiments, the upper end of the first vertical beam 200a includes an angle connector 211, and the upper end of the vertical tube 210 is inserted into the angle connector 211. The end of the first crossbar 310 near the vertical tube 210 is inserted into the angle connector 211. The end of the third crossbar 351 near the vertical tube 210 is inserted into the angle connector 211. When the wheeled vehicle 001 is in the deployed state, the angle connector 211 can abut against the upper surfaces of the first crossbar 310 and the third crossbar 351, thereby restricting the upward movement of the first crossbar 310 and the third crossbar 351. The structures of the second vertical beam 200b, the third vertical beam 200c, and the fourth vertical beam 200d can be referred to the relevant description of the first vertical beam 200a, and will not be repeated here.

[0166] In some embodiments, such as Figure 8 As shown, the first crossbar 310 includes a second positioning post 315 fixed to it, and the first upper connecting rod 730 is provided with a second guide groove 731. The second positioning post 315 is movably located within the second guide groove 731. The width of the second guide groove 731 is adapted to the radial dimension of the second positioning post 315. This allows the second positioning post 315 to guide the movement trajectory of the upper end of the first upper connecting rod 730, making the movement trajectory of the first upper connecting rod 730 controllable. The length of the second guide groove 731 is greater than the radial dimension of the second positioning post 315, allowing the second positioning post 315 to move along the length of the second guide groove 731. This increases the degree of freedom of movement of the first upper connecting rod 730 and reduces the risk of the second positioning post 315 getting stuck in the second guide groove 731. Furthermore, the first crossbar 310 is provided with a through hole, and the second positioning post 315, in the form of a pin, is installed within the through hole.

[0167] In some embodiments, such as Figure 8 As shown, the upper end of the first upper connecting rod 730 includes a sharp corner 732 and a recess 733, with the recess 733 located below the sharp corner 732. When the first locking structure 3012 is in the locked state, the sharp corner 732 abuts against the first transmission end 3121 to prevent the first locking structure 3012 from unlocking. During the folding process of the wheeled vehicle 001, as the first crossbar 310 rotates downward, the first transmission end 3121 moves downward, thereby aligning the first transmission end 3121 with the recess 733. By providing the recess 733 below the sharp corner 732, the risk of interference between the first transmission end 3121 and the first upper connecting rod 730 can be reduced.

[0168] In some embodiments, such as Figure 4 and Figure 8 As shown, the first vertical transmission mechanism 700 is connected to the first bottom beam 110b via a lower connecting rod 720. The lower connecting rod 720 moves with the rotation of the first bottom beam 110b. Two connection methods between the first bottom beam 110b and the lower connecting rod 720 are given below.

[0169] (a) The first bottom beam 110b is hinged to the first vertical beam 200a via the first pivot O31. The first bottom beam 110b includes a first segment 111 and a second segment 112. The first segment 111 is located on the side of the first pivot O31 opposite to the first vertical beam 200a and is connected to the bottom beam connector 120 and also to the lower connecting rod 720.

[0170] During the folding process of chassis 100, the first bottom beam 110b rotates around the first pivot O31, causing the first segment 111 to rotate upward. During this process, the first segment 111 can drive the slider 710 to move upward along the first vertical beam 200a.

[0171] When the slider 710 moves upward, it drives the first upper connecting rod 730 and the second upper connecting rod 740 to move upward simultaneously. The upward movement of the first upper connecting rod 730 causes the first lateral transmission member 312 to move away from the first slot 331, thereby enabling the first lateral transmission member 312 to disengage the first pin 313 from the first slot 331 and unlock the first locking structure 3012. Similarly, the upward movement of the second upper connecting rod 740 can unlock the third locking structure 3032.

[0172] (ii) Figure 4 and Figure 8 As shown, the first bottom beam 110b is hinged to the first vertical beam 200a via a first pivot O31. The first bottom beam 110b includes a first segment 111 and a second segment 112. The first segment 111 is located on the side of the first pivot O31 opposite to the first vertical beam 200a and is connected to the bottom beam connector 120. The second segment 112 is located on the side of the first pivot O31 opposite to the bottom beam connector 120 and is connected to the lower connecting rod 720. The first segment 111 and the second segment 112 form a lever structure with the first pivot O31 as the fulcrum.

[0173] During the folding process of chassis 100, the first bottom beam 110b rotates around the first pivot O31, causing the first segment 111 to rotate upward and the second segment 112 to rotate downward. During this process, the second segment 112 can drive the slider 710 to move downward along the first vertical beam 200a.

[0174] Furthermore, the length of the first segment 111 is greater than that of the second segment 112. This facilitates the installation of the first bottom beam 110b and also makes it easier for the user to lift the lifting component.

[0175] In some embodiments, such as Figure 4 and Figure 8As shown, the first bottom beam 110b is hinged to the bottom beam connector 120 via the second pivot O32. The chassis 100 includes an auxiliary bottom beam 113, which is spaced apart from the first bottom beam 110b in the vertical direction. The auxiliary bottom beam 113 is hinged to the first vertical beam 200a via the third pivot O33 and to the bottom beam connector 120 via the fourth pivot O34. The portion of the chassis 100 between the first pivot O31, the second pivot O32, the third pivot O33, and the fourth pivot O34 has a parallelogram structure or an approximately parallelogram structure. This helps to keep the first vertical beam 200a in a vertical position.

[0176] The relevant structures of the second bottom beam 110b, the third bottom beam 110b, and the fourth bottom beam 110b can be referred to the description of the first bottom beam 110b, and will not be repeated here.

[0177] Figure 11 This diagram illustrates a cross-sectional view of the frame of a wheeled vehicle according to an embodiment of this application in a partially folded state, where the area within the box represents the non-sectioned region. In some embodiments, such as Figure 9 and Figure 11 As shown, the second transmission assembly 750a includes a second vertical transmission mechanism 750 and a second horizontal transmission member 322. The second vertical transmission mechanism 750 is movably disposed on the second vertical beam 200b and connected to the chassis 100. The second horizontal transmission member 322 is movably disposed on the second horizontal bar 320 and connects the second vertical transmission mechanism 750 and the second locking structure 3022. For example, the second vertical transmission mechanism 750 is connected to the second bottom beam 110b and is configured to move with the rotation of the second bottom beam 110b.

[0178] The carrier 010 includes a second pin 323, which is movably disposed on the second crossbar 320 and connected to the second transverse transmission member 322. The first crossbeam connector 330a is provided with a second slot 333, the size and shape of which are adapted to the second pin 323. Thus, the second slot 333 and the second pin 323 form a second locking structure 3022. For example, the second transverse transmission member 322 includes a second transmission end 3221 and a second unlocking end 3222, the second transmission end 3221 being connected to the second vertical transmission mechanism 750. The second pin 323 is disposed at the second unlocking end 3222.

[0179] The relevant structure of the second crossbar 320 can be referred to the relevant content of the first crossbar 310 mentioned above, and will not be repeated here.

[0180] A synchronous motion structure is also required in the carrier 010 to improve the coordination of movement between different parts of the carrier 010 during folding. Besides the carrier 010, the synchronous motion structure can also be applied to other types of supports. The following section uses the carrier 010 as an example to provide a detailed description of the relevant structure of the synchronous motion structure.

[0181] Figure 12 A partial structural schematic diagram of the frame of a wheeled vehicle provided according to an embodiment of this application is shown in a partially folded state. Figure 13 A schematic diagram of the linkage structure of a wheeled vehicle according to an embodiment of this application is shown. Figure 14 A schematic diagram of the linkage structure of a wheeled vehicle according to an embodiment of this application is shown. Figure 15 A schematic diagram of the linkage structure of a wheeled vehicle according to an embodiment of this application is shown.

[0182] In some embodiments, such as Figures 12 to 15 As shown, the synchronous motion structure 800a includes a first support rod 206, a second support rod 208, and a linkage structure 800. The first support rod 206 is provided with a first moving part 2063, which is configured to move along a first trajectory T1. The second support rod 208 is provided with a second moving part 2083, which is configured to move along a second trajectory T2. The linkage structure 800 includes a first transmission part P1 and a second transmission part P2, configured such that: when the first transmission part P1 moves along the first trajectory T1, it drives the second transmission part P2 to move along the second trajectory T2; when the second transmission part P2 moves along the second trajectory T2, it drives the first transmission part P1 to move along the first trajectory T1. The first moving part 2063 is connected to the first transmission part P1 and is configured to move simultaneously with the same displacement relative to the ground GD. The second moving part 2083 is connected to the second transmission part P2 and is configured to move simultaneously with the same displacement relative to the ground GD.

[0183] During the folding process of the carrier frame 010, the first moving part 2063 and the first transmission part P1 can move synchronously along the first trajectory T1, and the second moving part 2083 and the second transmission part P2 can move synchronously along the second trajectory T2. When there is a risk that the second support rod 208 will get stuck, the first support rod 206 can apply a force to the second support rod 208 through the linkage structure 800, so that the second support rod 208 can move smoothly. Similarly, when there is a risk that the first support rod 206 will get stuck, the second support rod 208 can apply a force to the first support rod 206 through the linkage structure 800, so that the first support rod 206 can move smoothly. In this way, the first support rod 206 and the second support rod 208 will move simultaneously or nearly simultaneously, which can improve the smoothness of the folding of the carrier frame 010.

[0184] In some embodiments, during the folding process of the carrier 010, both the first support rod 206 and the second support rod 208 rotate. Accordingly, the first trajectory T1 is arc-shaped, and the second trajectory T2 is arc-shaped.

[0185] When the rotation of the second support rod 208 is restricted, the first support rod 206 tends to rotate before the second support rod 208. Therefore, the first support rod 206 can drive the second support rod 208 to move through the linkage structure 800. Similarly, when the rotation of the first support rod 206 is restricted, the second support rod 208 tends to rotate before the first support rod 206. Therefore, the second support rod 208 can drive the first support rod 206 to rotate through the linkage structure 800. This allows the first support rod 206 and the second support rod 208 to move simultaneously or nearly simultaneously, improving the smoothness of the folding of the carrier frame 010.

[0186] Without the synchronous motion structure 800a, there is a risk that the rotation of the first support rod 206 and the rotation of the second support rod 208 will be out of sync. This could cause the carrier 010 to fail to fold completely due to jamming in certain parts.

[0187] In some embodiments, with the ground GD as a reference, the displacement value of the first moving part 2063 along the first trajectory T1 is equal to the displacement value of the second moving part 2083 along the second trajectory T2. Thus, during the folding process of the carrier 010, the movement of the first support rod 206 and the movement of the second support rod 208 can be spatially synchronized or nearly synchronized, thereby improving the smoothness of the folding of the carrier 010. Furthermore, the first trajectory T1 and the second trajectory T2 are symmetrical about the reference plane S1. For example, during the folding process of the carrier 010, the rotational angular velocity of the first support rod 206 is equal to the rotational angular velocity of the second support rod 208, and the linear velocity of the first moving part 2063 is equal to the linear velocity of the second moving part 2083.

[0188] In other embodiments, the first support rod 206 and the second support rod 208 perform linear motion. Accordingly, both the first trajectory T1 and the second trajectory T2 are linear. Alternatively, the first support rod 206 performs linear motion, while the second support rod 208 performs rotational motion. Accordingly, the first trajectory T1 is linear, and the second trajectory T2 is arc-shaped.

[0189] In some embodiments, the synchronous motion structure 800a further includes a support connector 330b. The linkage structure 800 is movably disposed on the support connector 330b. The first support rod 206 is hinged to the support connector 330b via a first hinge axis O21, and the second support rod 208 is hinged to the support connector 330b via a second hinge axis O22. The first hinge axis O21 is located at the center of the first trajectory T1, and the second hinge axis O22 is located at the center of the second trajectory T2. That is, when the first support rod 206 rotates around the first hinge axis O21, the distance between the first moving part 2063 and the first hinge axis O21 is the radius of the first trajectory T1. When the second support rod 208 rotates around the second hinge axis O22, the distance between the second moving part 2083 and the second hinge axis O22 is the radius of the second trajectory T23.

[0190] In some embodiments, the first support rod 206 includes a first active end and a first driven end, the first active end being the power input end of the first support rod 206. The second support rod 208 includes a second active end and a second driven end, the second active end being the power input end of the second support rod 208. A first moving part 2063 and a first hinge shaft O21 are disposed at the first driven end, and a second moving part 2083 and a second hinge shaft O22 are disposed at the second driven end.

[0191] When the carrier 010 is folded, the first active end and the second active end move closer to each other, causing the first support rod 206 and the second support rod 208 to move towards each other. The linkage structure 800 ensures that the displacement values ​​and deflection angle values ​​of the first driven end and the second driven end are the same.

[0192] In some embodiments, such as Figure 12 and Figure 13 As shown, the linkage structure 800 is hinged to the first support rod 206 via the first drive shaft O11. The linkage structure 800 is hinged to the second support rod 208 via the second drive shaft O12.

[0193] In some embodiments, the first support rod 206 is hinged to the first transmission part P1 via the first moving part 2063, and the second support rod 208 is hinged to the second transmission part P2 via the second moving part 2083.

[0194] For example, such as Figure 12 and Figure 13As shown, the first transmission part P1 is a cylindrical hole, the first moving part 2063 is a cylindrical hole, and the first transmission shaft O11 is inserted into the first transmission part P1 and the first moving part 2063 to form a hinged structure. Alternatively, the first transmission part P1 may be a cylindrical protrusion, and the first moving part 2063 may be a cylindrical hole; the first transmission part P1, acting as the first transmission shaft O11, is inserted into the first moving part 2063 to form a hinged structure. Or, the first transmission part P1 may be a cylindrical hole, and the first moving part 2063 may be a cylindrical protrusion; the first moving part 2063, acting as the first transmission shaft O11, is inserted into the first transmission part P1 to form a hinged structure. The connection method between the second moving part 2083 and the second transmission part P2 can be the same as the connection method between the first moving part 2063 and the first transmission part P1, and will not be described further here.

[0195] In some embodiments, the linkage structure 800 is a multi-link structure. This can improve the reliability of power transmission between the first support rod 206 and the second support rod 208.

[0196] For example, a multi-link structure includes a first link 810, a second link 820, a third link 830, and a fourth link 840. A first transmission unit P1 is located on the first link 810, and a second transmission unit P2 is located on the second link 820. The first transmission unit P1 is hinged to the first support rod 206 via a first transmission shaft O11, and the second transmission unit P2 is hinged to the second support rod 208 via a second transmission shaft O12. The first link 810 is hinged to the second link 820 via a third transmission shaft O13, and to the third link 830 via a fourth transmission shaft O14. The second link 820 is hinged to the fourth link 840 via a fifth transmission shaft O15. The third link 830 is hinged to the fourth link 840 via a sixth transmission shaft O16.

[0197] This linkage structure 800 forms a planar four-bar linkage, with the fourth drive shaft O14, third drive shaft O13, fifth drive shaft O15, and sixth drive shaft O16 serving as the four rotating shafts of the planar four-bar linkage. The first link 810, second link 820, third link 830, fourth link 840, fourth drive shaft O14, third drive shaft O13, fifth drive shaft O15, and sixth drive shaft O16 can be linked together. Furthermore, the motion trajectory of the first drive shaft O11 and the motion trajectory of the second drive shaft O12 are symmetrical about the reference plane S1.

[0198] In other embodiments, such as Figure 13 As shown, along the extension direction of the first connecting rod 810, the fourth drive shaft O14 is located between the first drive shaft O11 and the third drive shaft O13, and along the extension direction of the second connecting rod 820, the fifth drive shaft O15 is located between the second drive shaft O12 and the third drive shaft O13. This facilitates the processing and assembly of the linkage structure 800 and helps to reduce the space occupied by the linkage structure 800.

[0199] In some embodiments, such as Figure 14 As shown, along the extending direction of the first connecting rod 810, the third transmission shaft O13 is located between the first transmission shaft O11 and the fourth transmission shaft O14, and along the extending direction of the second connecting rod 820, the third transmission shaft O13 is located between the second transmission shaft O12 and the fifth transmission shaft O15. In some embodiments, as... Figure 15 As shown, the first drive shaft O11 and the fourth drive shaft O14 share a common central axis, and the second drive shaft O12 and the fifth drive shaft O15 share a common central axis. In some embodiments, along the extension direction of the first connecting rod 810, the first drive shaft O11 is located between the fourth drive shaft O14 and the third drive shaft O13, and along the extension direction of the second connecting rod 820, the second drive shaft O12 is located between the fifth drive shaft O15 and the third drive shaft O13.

[0200] In some embodiments, such as Figures 13 to 15 As shown, the distance L1 between the third drive shaft O13 and the fourth drive shaft O14 is equal to or approximately equal to the distance L2 between the third drive shaft O13 and the fifth drive shaft O15. The distance L3 between the sixth drive shaft O16 and the fourth drive shaft O14 is equal to or approximately equal to the distance L4 between the sixth drive shaft O16 and the fifth drive shaft O15. The distance L5 between the first drive shaft O11 and the third drive shaft O13 is equal to or approximately equal to the distance L6 between the second drive shaft O12 and the third drive shaft O13.

[0201] The central axes of the fourth drive shaft O14, the third drive shaft O13, the fifth drive shaft O15, and the sixth drive shaft O16 can be parallel to each other. A reference plane exists perpendicular to the central axis of the third drive shaft O13. During the deformation of the linkage structure 800, on the reference plane, the triangle formed by the central axes of the third drive shaft O13, the fourth drive shaft O14, and the sixth drive shaft O16 is the first triangle, and the triangle formed by these three axes is the second triangle. Since the corresponding side lengths are equal, the first and second triangles are always congruent. During the folding process of the carrier frame 010, the included angle O3-O4-O6 is always equal to the included angle O5-O4-O6.

[0202] Therefore, the angular velocity (angle) of the first link 810 rotating around the third transmission shaft O13 is always equal to the angular velocity (angle) of the second link 820 rotating around the third transmission shaft O13. The linear velocity of the first transmission part P1 (first transmission shaft O11) rotating around the third transmission shaft O13 is always equal to the linear velocity of the second transmission part P2 (second transmission shaft O12) rotating around the third transmission shaft O13. The motion trajectory of the first transmission part P1 (first transmission shaft O11) and the motion trajectory of the second transmission part P2 (second transmission shaft O12) are symmetrical.

[0203] In some embodiments, the synchronous motion structure 800a includes a first arc-shaped groove 334 and a second arc-shaped groove 335. For example, as... Figure 9 and Figure 11 As shown, the bracket connector 330b includes a first arc-shaped groove 334 and a second arc-shaped groove 335. The first arc-shaped groove 334 extends along a first trajectory T1, and the second arc-shaped groove 335 extends along a second trajectory T2. The center of the first arc-shaped groove 334 is located at the first hinge shaft O21, and the center of the second arc-shaped groove 335 is located at the second hinge shaft O22. The radius of the first arc-shaped groove 334 is equal to the radius of the second arc-shaped groove 335. A first drive shaft O11 is movably disposed within the first arc-shaped groove 334, and a second drive shaft O12 is movably disposed within the second arc-shaped groove 335.

[0204] The first arc-shaped groove 334 can be used to guide the movement of the first drive shaft O11, and the second arc-shaped groove 335 can be used to guide the movement of the second drive shaft O12. Furthermore, the movement trajectory of the first drive shaft O11 and the movement trajectory of the second drive shaft O12 are symmetrical about the reference plane S1. Correspondingly, the first arc-shaped groove 334 and the second arc-shaped groove 335 are symmetrical about the reference plane S1.

[0205] In some embodiments, such as Figure 9 and Figure 11As shown, the bracket connector 330b includes at least one linear groove 336. That is, the first crossbeam connector 330a includes at least one linear groove 336. The extension direction of the at least one linear groove 336 is perpendicular to the line connecting the first hinge shaft O21 and the second hinge shaft O22. For example, the first hinge shaft O21 and the second hinge shaft O22 are symmetrical about the reference plane S1, and the extension direction of the linear groove 336 is parallel to the reference plane S1. The third drive shaft O13 and the sixth drive shaft O16 are movably disposed within the linear groove 336. Further, the first hinge shaft O21 and the second hinge shaft O22 are spaced horizontally, and the linear groove 336 is symmetrical about the reference plane S1 and extends vertically. The linear groove 336 can guide the movement of the third drive shaft O13 and the sixth drive shaft O16. In this way, the first drive shaft O11 and the second drive shaft O12 can be driven by the third drive shaft O13 and the sixth drive shaft O16, which helps to improve the synchronization of the movement of the first drive shaft O11 and the second drive shaft O12.

[0206] In some embodiments, at least one linear groove 336 includes a first linear groove 3361 and a second linear groove 3362. The extending directions of both the first linear groove 3361 and the second linear groove 3362 are perpendicular to the line connecting the first hinge shaft O21 and the second hinge shaft O22. A third drive shaft O13 is movably disposed within the first linear groove 3361, and a sixth drive shaft O16 is movably disposed within the second linear groove 3362. The first linear groove 3361 can limit the movement of the third drive shaft O13, and the second linear groove 3362 can limit the movement of the sixth drive shaft O16. The lengths of both the first linear groove 3361 and the second linear groove 3362 are adapted to the first arcuate groove 334 and also to the second arcuate groove 335. Thus, the third drive shaft O13, the sixth drive shaft O16, the first drive shaft O11, and the second drive shaft O12 can move in a coordinated manner.

[0207] Figure 16 A schematic diagram of a support connector for a wheeled vehicle according to an embodiment of this application is shown. In some embodiments, such as Figure 16 As shown, the bracket connector 330b includes a first piece 337 and a second piece 338. The first piece 337 and the second piece 338 are opposite to and connected to each other. One end of the first bracket rod 206 is located between the first piece 337 and the second piece 338, and is hinged to both the first piece 337 and the second piece 338 via a first hinge shaft O21. One end of the second bracket rod 208 is located between the first piece 337 and the second piece 338, and is hinged to both the first piece 337 and the second piece 338 via a second hinge shaft O22.

[0208] Both the first piece 337 and the second piece 338 can be equipped with structures such as linear grooves 336, first arc-shaped grooves 334, and second arc-shaped grooves 335, all of which can be connected to the linkage structure 800. This ensures that the force on the bracket connector 330b is balanced.

[0209] In some embodiments, such as Figure 12 As shown, the synchronous motion structure 800a includes a first pin 313 and a second pin 323. The first pin 313 is movably disposed on the first support rod 206, and the second pin 323 is movably disposed on the second support rod 208. The support connector 330b is provided with a first slot 331 and a second slot 333. The first slot 331 is adapted to the size and shape of the first pin 313 to form a first locking structure 3012. The second slot 333 is adapted to the size and shape of the second pin 323 to form a second locking structure 3022. For details regarding the first locking structure 3012 and the second locking structure 3022, please refer to the relevant content above; further details will not be repeated here.

[0210] In some embodiments, such as Figure 11 and Figure 12 As shown, the first crossbar 310 is configured as the first support rod 206. The second crossbar 320 is configured as the second support rod 208. The first crossbeam connector 330a is configured as the support connector 330b.

[0211] The upper end of the first vertical beam 200a is hinged to the first active end, and the upper end of the second vertical beam 200b is hinged to the second active end.

[0212] like Figures 11 to 15 As shown, the first crossbar 310 is provided with a first drive shaft O11, and the second crossbar 320 is provided with a second drive shaft O12. The linkage structure 800 is hinged to the first crossbar 310 via the first drive shaft O11, and the linkage structure 800 is hinged to the second crossbar 320 via the second drive shaft O12. For example, the first connecting rod 810 is hinged to the first crossbar 310 via the first drive shaft O11, and the second connecting rod 820 is hinged to the second crossbar 320 via the second drive shaft O12.

[0213] The first crossbar 310 is hinged to the first crossbeam connector 330a via the first hinge shaft O21, and the second crossbar 320 is hinged to the first crossbeam connector 330a via the second hinge shaft O22. The first crossbeam connector 330a includes a first arc-shaped groove 334 and a second arc-shaped groove 335. The first crossbeam connector 330a also includes a first piece 337 and a second piece 338. Both the first piece 337 and the second piece 338 can be provided with structures such as a first slot 331 and a second slot 333, which helps to improve the stress stability of the support connector 330b.

[0214] In some embodiments, the second crossbeam connector 350 is configured as a bracket connector 330b. The third crossbar 351 is configured as a first bracket rod 206. The fourth crossbar 352 is configured as a second bracket rod 208.

[0215] As an illustration, the function of the linkage structure 800 is explained below with reference to the first crossbeam connector 330a.

[0216] The first crossbeam 301 includes a linkage structure 800, which is movably disposed on the first crossbeam connector 330a. The linkage structure 800 connects the first crossbar 310 and the second crossbar 320 and is configured to transmit power bidirectionally between the first crossbar 310 and the second crossbar 320, so that the first rotary joint 3011 and the second rotary joint 3021 move synchronously or nearly synchronously, and the first crossbar 310 and the second crossbar 320 move synchronously.

[0217] During the folding process of the chassis 100 driving the first crossbeam 301, the bottom beam connector 120 receives the user's upward pulling force as the driving force. The force is transmitted along a first path through the first bottom beam 110b, the first vertical beam 200a, and the first crossbar 310 to the first revolute joint 3011, and simultaneously along a second path through the second bottom beam 110b, the second vertical beam 200b, and the second crossbar 320 to the second revolute joint 3021. On either the first or second path, some parts may become jammed, causing a tendency for the rotation of the first crossbar 310 and the second crossbar 320 to be asynchronous. In this case, the linkage structure 800 ensures that the rotation of the first crossbar 310 and the second crossbar 320 is always synchronized.

[0218] For example, when the rotation of the second crossbar 320 is restricted, the first crossbar 310 tends to rotate faster than the second crossbar 320. Therefore, the first crossbar 310 can drive the second crossbar 320 to continue rotating through the linkage structure 800. Similarly, when the rotation of the first crossbar 310 is restricted, the second crossbar 320 tends to rotate faster than the first crossbar 310. Therefore, the second crossbar 320 can drive the first crossbar 310 to continue rotating through the linkage structure 800. Setting up the linkage structure 800 can increase the new transmission path, thereby reducing the risk of parts getting stuck on the carrier 010 and improving the smoothness of the folding of the carrier 010.

[0219] In other embodiments, the linkage structure 800 may also include components such as springs and cables.

[0220] The unfolding process of wheeled vehicle 001 can be the reverse of the folding process of wheeled vehicle 001. This manual will not elaborate on the unfolding process of wheeled vehicle 001.

[0221] In summary, this application provides a foldable wheeled vehicle 001. When the user lifts the chassis connector 120 upwards, the chassis 100 folds. Simultaneously, the folding of the chassis 100 triggers the automatic folding of the side vertical beams 200, the automatic unlocking and folding of the side horizontal beams 300, and the automatic folding of the handlebar frame 040. With a single action, the user can automatically fold the chassis 100, the frame 010, and the handlebar frame, making the operation simple, quick, and highly operable.

[0222] The foregoing has described specific embodiments of this application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than that shown in the embodiments and may still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are possible or may be advantageous.

[0223] In summary, after reading this detailed disclosure, those skilled in the art will understand that the foregoing detailed disclosure is presented by way of example only and is not restrictive. Although not explicitly stated herein, those skilled in the art will understand that the requirements of this application encompass various reasonable changes, improvements, and modifications to the embodiments. These changes, improvements, and modifications are intended to be made by this application and are within the spirit and scope of the exemplary embodiments of this application.

[0224] Furthermore, certain terms used in this application have been used to describe embodiments of this application. For example, "an embodiment," "an embodiment," and / or "some embodiments" mean that a particular feature, structure, or characteristic described in connection with that embodiment may be included in at least one embodiment of this application. Therefore, it is to be emphasized and understood that two or more references to "an embodiment" or "an embodiment" or "alternative embodiment" in various parts of this application do not necessarily refer to the same embodiment. Moreover, specific features, structures, or characteristics may be appropriately combined in one or more embodiments of this application.

[0225] It should be understood that in the foregoing description of the embodiments of this application, various features are combined in a single embodiment, drawing, or description for the purpose of simplifying the understanding of a feature. However, this does not mean that the combination of these features is necessary, and those skilled in the art may readily identify some of the devices as separate embodiments when reading this application. That is, the embodiments in this application can also be understood as an integration of multiple sub-embodiments. It is also valid when each sub-embodiment contains fewer than all the features of a single foregoing disclosed embodiment.

[0226] Every patent, patent application, publication of a patent application, and other material, such as articles, books, specifications, publications, documents, and literature (excluding any related historical examination documents), cited in this disclosure is incorporated herein for all purposes, including, for example, in the specification and claims of this disclosure. However, in the event of any inconsistency or conflict between the descriptions, definitions, and / or terms used in the foregoing and those used in this disclosure, the descriptions, definitions, and / or terms used in this disclosure shall prevail.

[0227] Finally, it should be understood that the embodiments disclosed herein are illustrative of the principles of the embodiments of this application. Other modified embodiments are also within the scope of this application. Therefore, the embodiments disclosed herein are merely examples and not limitations. Those skilled in the art can adopt alternative configurations to implement the applications in this application based on the embodiments in this application. Therefore, the embodiments of this application are not limited to the embodiments precisely described in the application.

Claims

1. A synchronous motion structure on a support, characterized in that, include: A first support rod is provided with a first moving part, which is configured to move along a first trajectory; The second support rod is provided with a second moving part, which is configured to move along a second trajectory; The linkage structure includes a first transmission part and a second transmission part, configured to: when the first transmission part moves along the first trajectory, drive the second transmission part to move along the second trajectory; and when the second transmission part moves along the second trajectory, drive the first transmission part to move along the first trajectory. The first moving part is connected to the first transmission part and is configured to move simultaneously with the same displacement relative to the ground; the second moving part is connected to the second transmission part and is configured to move simultaneously with the same displacement relative to the ground.

2. The synchronous motion structure as described in claim 1, characterized in that, With the ground as a reference, the displacement value of the first moving part along the first trajectory is equal to the displacement value of the second moving part along the second trajectory.

3. The synchronous motion structure as described in claim 1 or 2, characterized in that, The first trajectory and the second trajectory are symmetrical about the reference plane.

4. The synchronous motion structure as described in any one of claims 1 to 3, characterized in that, The first trajectory is arc-shaped, and the second trajectory is arc-shaped.

5. The synchronous motion structure as described in claim 3, characterized in that, It also includes a first arc-shaped groove and a second arc-shaped groove, wherein the first arc-shaped groove extends along the first trajectory and the second arc-shaped groove extends along the second trajectory; The first arc-shaped groove and the second arc-shaped groove are symmetrical about the reference plane.

6. The synchronous motion structure as described in any one of claims 1 to 4, characterized in that, The first support rod is hinged to the first transmission part through the first moving part, and the second support rod is hinged to the second transmission part through the second moving part.

7. The synchronous motion structure as described in claim 6, characterized in that, The linkage structure is a multi-link structure.

8. The synchronous motion structure as described in claim 7, characterized in that, The multi-link structure includes a first link and a second link; The first transmission part is located on the first connecting rod, and the second transmission part is located on the second connecting rod; the first transmission part is hinged to the first support rod via a first transmission shaft, and the second transmission part is hinged to the second support rod via a second transmission shaft; The first link is hinged to the second link via a third drive shaft.

9. The synchronous motion structure as described in claim 8, characterized in that, The multi-link structure also includes a third link and a fourth link; The first link is hinged to the third link via the fourth drive shaft; The second link is hinged to the fourth link via the fifth drive shaft; The third link is hinged to the fourth link via the sixth drive shaft.

10. The synchronous motion structure as described in claim 9, characterized in that, The distance between the third drive shaft and the fourth drive shaft is equal to or approximately equal to the distance between the third drive shaft and the fifth drive shaft; The distance between the sixth drive shaft and the fourth drive shaft is equal to or approximately equal to the distance between the sixth drive shaft and the fifth drive shaft; The distance between the first drive shaft and the third drive shaft is equal to or approximately equal to the distance between the second drive shaft and the third drive shaft.

11. The synchronous motion structure as described in claim 9 or 10, characterized in that, It also includes bracket connectors, The first support rod is hinged to the support connector via a first hinge axis, and the second support rod is hinged to the support connector via a second hinge axis; wherein the first hinge axis is located at the center of the first trajectory, and the second hinge axis is located at the center of the second trajectory.

12. The synchronous motion structure as described in claim 11, characterized in that, The bracket connector includes a first arc-shaped groove and a second arc-shaped groove; the first arc-shaped groove extends along the first trajectory, and the second arc-shaped groove extends along the second trajectory; The first drive shaft is movably disposed within the first arc-shaped groove, and the second drive shaft is movably disposed within the second arc-shaped groove.

13. The synchronous motion structure as described in claim 11 or 12, characterized in that, The bracket connector includes at least one linear groove, the extension direction of which is perpendicular to the line connecting the first hinge axis and the second hinge axis. The third drive shaft and the sixth drive shaft are movably disposed within the at least one linear groove.

14. The synchronous motion structure as described in claim 13, characterized in that, The at least one linear groove includes a first linear groove and a second linear groove, and the extension directions of the first linear groove and the second linear groove are both perpendicular to the line connecting the first hinge axis and the second hinge axis. The third drive shaft is movably disposed within the first linear groove, and the sixth drive shaft is movably disposed within the second linear groove.

15. The synchronous motion structure as described in any one of claims 11 to 14, characterized in that, The bracket connector includes a first piece and a second piece, which are opposite to and connected to each other. One end of the first support rod is located between the first plate and the second plate, and is hinged to the first plate and the second plate through the first hinge shaft.

16. The synchronous motion structure as described in any one of claims 11 to 15, characterized in that, It also includes the first pin and the second pin; The first pin is movably disposed on the first support rod, and the second pin is movably disposed on the second support rod; The bracket connector is provided with a first slot and a second slot; the first slot is adapted to the size and shape of the first pin to form a first locking structure; the second slot is adapted to the size and shape of the second pin to form a second locking structure.

17. A foldable wheeled vehicle, characterized in that, include: wheel; A foldable carrier connected to the wheels, including a synchronous motion structure as described in any one of claims 1 to 16.

18. The foldable wheeled vehicle as claimed in claim 17, characterized in that, The carrier includes: At least two circumferential vertical beams, including a first vertical beam and a second vertical beam; when the frame is folded, the first vertical beam and the second vertical beam are close to each other; At least two circumferential crossbeams, including a first crossbeam, the first crossbeam comprising: First crossbeam connector; The first horizontal bar is configured as the first support bar and is hinged to the first vertical beam; The second horizontal bar is configured as the second support bar and is hinged to the second vertical beam.

19. The foldable wheeled vehicle as claimed in claim 18, characterized in that, The carrier includes a foldable chassis, the chassis comprising: Bottom beam connector; The first bottom beam is hinged to the lower end of the first vertical beam and connected to the bottom beam connector; and The second bottom beam is hinged to the lower end of the second vertical beam and connected to the bottom beam connector.

20. The foldable wheeled vehicle as described in claim 18 or 19, characterized in that, The at least two peripheral vertical beams include a third vertical beam; The at least two peripheral crossbeams include a second crossbeam, the second crossbeam comprising: Second crossbeam connector; The third horizontal bar is configured as the first support bar and is hinged to the first vertical beam; The fourth horizontal bar is configured as the second support bar and is hinged to the third vertical beam.

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