CN114906194A

CN114906194A - Folding bicycle

Info

Publication number: CN114906194A
Application number: CN202210790762.0A
Authority: CN
Inventors: 冯晋; 余娜; 刘仲良; 王毅; 李雯霄
Original assignee: Wheat Grain Creation Technology Shenzhen Co ltd
Current assignee: Wheat Grain Creation Technology Shenzhen Co ltd
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2022-08-16

Abstract

The embodiment of the specification provides a folding trolley. This folding car includes: the device comprises at least two first bearing parts, at least two first supporting rods, a second supporting rod, at least two second bearing parts, a first connecting piece, a second connecting piece, a first auxiliary piece, a second auxiliary piece and a fixing piece; the first bearing piece, the first supporting rod and the second bearing piece are movably connected with the fixing piece; the first bearing piece is connected with the first auxiliary piece, the first auxiliary piece is the same as the first connecting piece or is connected with the first connecting piece, and the first auxiliary piece is movably connected with at least one of the first bearing piece or the first connecting piece; the first support rod is movably connected with the second connecting piece; the first connecting piece is connected with the second supporting rod, and the second connecting piece is connected with the second supporting rod in a sliding manner; the second bearing part is connected with the second auxiliary part, the second auxiliary part is the same as the second supporting rod or is connected with the second supporting rod, and the second auxiliary part is movably connected with at least one of the second bearing part or the second supporting part.

Description

Folding bicycle

Technical Field

This specification relates to the folding mechanism field, in particular to folding car.

Background

At present, the foldable portable carrier is used as a short-distance carrying tool, has the characteristics of small size and flexibility, and can complete short-distance carrying tasks in places where large-scale carrying instruments are inconvenient to use. The common carrier in the market generally comprises two or more groups of scissors mechanisms, and the carrier can be folded through the linkage effect of the scissors mechanisms so as to be convenient to store. However, the scissor fork mechanism of the existing carrier has the defects of excessive movable components, unstable stress, large noise caused by gaps among the components, heavy self-weight and the like.

Disclosure of Invention

One of the embodiments of the present specification provides a folding cart. This folding car includes: the device comprises at least two first bearing parts, at least two first supporting rods, a second supporting rod, at least two second bearing parts, a first connecting piece, a second connecting piece, a first auxiliary piece, a second auxiliary piece and a fixing piece; the first end of the first bearing piece, the first supporting rod and the first end of the second bearing piece are movably connected with the fixing piece; the second end of the first bearing part is connected with the first auxiliary part, the first auxiliary part is the same as the first connecting part or is connected with the first connecting part, and the first auxiliary part is movably connected with the first bearing part or at least one of the first connecting part; the second end of the first supporting rod is movably connected with the second connecting piece; the first connecting piece is connected with the second supporting rod, and the second connecting piece is connected with the second supporting rod in a sliding manner; the second end of the second bearing part is connected with the second auxiliary part, the second auxiliary part is the same as the second supporting rod or is connected with the second supporting rod, and at least one of the second auxiliary part and the second bearing part or the second supporting part is movably connected.

In some embodiments, the second connecting member forms a stable connection with the first connecting member after sliding upwards along the second supporting rod.

In some embodiments, the first bearing member and the second bearing member connected to the same fixing member have the same length, and the distance between the first end of the first bearing member and the first end of the second bearing member is equal to the length of the second supporting rod.

In some embodiments, there are at least two of the first load bearing members having the same length; at least two first supporting rods are identical in length; there are at least two of the second load bearing members having the same length.

In some embodiments, the support device further comprises a locking device for locking the stable connection.

In some embodiments, the first connector lower surface includes a raised portion and the second connector upper surface includes a recessed portion, the raised portion at least partially mating with the recessed portion.

In some embodiments, after the second support bar slides upwards relative to the second connecting member, a first distance and a second distance become smaller, the first distance is a distance between the first bearing member and the first support bar, and the second distance is a distance between the fixing member and the second support bar.

In some embodiments, the first carrier comprises or supports a first carrier unit.

In some embodiments, the first carrier unit has a removable side wall.

In some embodiments, the support device further comprises a wheel and a limiting device.

In some embodiments, the second carrier comprises or supports a second carrier unit.

In some embodiments, the second support bar has a first cross-sectional dimension that is less than a second cross-sectional dimension, the first cross-sectional dimension corresponding to a first position and the second cross-sectional dimension corresponding to a second position, the first position being below the second position; the second link includes resistance means which causes the second link to resist sliding from the first position to the second position.

In some embodiments, the resistance device is adjustable.

In some embodiments, the second support rod is connected to or includes one or more limiting devices for limiting the second connecting member from sliding from bottom to top.

In some embodiments, the first carrier unit or the second carrier unit is variable in length.

Through the structural characteristics and the connection relationship of the supporting device, the first bearing piece, the first supporting rod and the second supporting rod of the supporting device are movably or slidably connected with each other to form a movable component, and the form of the supporting device is changed through relative rotation or sliding, for example, the supporting device can have an unfolding state and a folding state. Each component quantity is less, connects in a flexible way, is favorable to reducing strutting arrangement's dead weight, reduces the activity noise between the component.

Drawings

The present description will be further explained by way of exemplary embodiments, which will be described in detail by way of the accompanying drawings. These embodiments are not intended to be limiting, and in these embodiments like numerals are used to indicate like structures, wherein:

FIG. 1 is a schematic illustration of a folding cart, according to some embodiments of the present disclosure;

FIG. 2 is a partial schematic view of a folding cart in accordance with some embodiments herein;

FIG. 3 is a schematic illustration of a folding cart in a semi-folded configuration according to some embodiments of the present disclosure;

FIG. 4 is a schematic illustration of a folding cart in a fully folded configuration according to some embodiments of the present disclosure;

fig. 5 is a schematic view of a first carrier according to some embodiments herein;

FIG. 6 is a schematic view of a first carrier unit according to some embodiments of the present description;

FIG. 7 is a schematic view of a folding cart according to some embodiments of the present disclosure;

FIG. 8 is a schematic diagram of a folding cart according to some embodiments of the present disclosure;

fig. 9 is a schematic view of a second carrier shown in accordance with some embodiments herein.

Wherein the reference numerals are: 100. folding the vehicle; 1. a first bearing member; 110. a first end of a first carrier; 120. a second end of the first load bearing member; 131. connecting sheets; 2. a first support bar; 21. a first end of a first support bar; 22. a second end of the first support bar; 3. a second support bar; 4. a first connecting member; 41. a convex portion; 5. a second connecting member; 51. a recessed portion; 6. a fixing member; 7. a second bearing member; 71. a first end of a second carrier; 72. a second end of the second load bearing member; 8. a third connecting member; 9. a first carrier unit; 91. a side wall; 911. a front side wall; 912. a rear sidewall; 913. a left side wall; 914. a right side wall; 10. a bottom frame; 101. a front bottom frame; 102. a rear bottom frame; 11. an armrest rail; 111. a front handrail column; 112. a rear handrail; 12. a wheel; 121. a universal wheel; 122. a fixed wheel; 13. a traffic control device; 14. a universal wheel assembly; 15. a fixed wheel assembly; 16. a pull rod; 17. a second carrier unit; 18. a first auxiliary member; 19. a second auxiliary member.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present specification, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only examples or embodiments of the present description, and that for a person skilled in the art, the present description can also be applied to other similar scenarios on the basis of these drawings without inventive effort. Unless otherwise apparent from the context, or otherwise indicated, like reference numbers in the figures refer to the same structure or operation.

As used in this specification and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements.

Some embodiments of the present description provide a folding cart that may be used to handle items, for example, in a logistics transit station, outdoor camping, shopping, baggage transfer, and the like. Embodiments of the present description may also be applied in other scenarios.

FIG. 1 is a schematic diagram of a folding cart, according to some embodiments of the present disclosure. It should be understood that the drawings in the embodiments of the present description are only schematic, and in some embodiments, the folding cart may not include some of the components in the drawings.

As shown in fig. 1, the present embodiment provides a folding cart 100, where the folding cart 100 includes at least two first supporting members 1, at least two first supporting rods 2, a second supporting rod 3, at least two second supporting members 7, a first connecting member 4, a second connecting member 5, a first auxiliary member, a second auxiliary member, and a fixing member 6. Other components and connections shown in the drawings may be provided as embodiments, and corresponding parts may be omitted or otherwise implemented in some embodiments. An exemplary embodiment of the various components of the folding cart 100 will be described in greater detail below in conjunction with fig. 1.

The mount 6 is a support-like structure for connecting other components in the folding cart 100. In some embodiments, the securing member is configured to secure the post. In some embodiments, the fixture is configured as a frame. The frame is formed by a plurality of rods through rigid connection. In some embodiments, the fixing member is configured as a fixing plate, which may be a flat plate or a curved plate. The fixing member may also be in other forms.

The first carrier 1 is a member of the folding cart 100 that plays a role of bearing weight. In some embodiments, the first carrier 1 includes, but is not limited to, a bar, a planar frame, a space frame, a plate, or other shape, structure.

In some embodiments, the first carrier 1 may bear weight directly, e.g. articles may be placed directly on the first carrier 1. In some embodiments, the first load bearing member 1 may indirectly bear load, for example, the first load bearing member 1 may be provided with other structures such as a basket, a box, a basket, a hook, a net, or a bag, and the like, and the articles are placed in the other structures and indirectly bear load through the first load bearing member 1. The first load bearing member may also be load bearing in other ways.

The second carrier 7 is a load-bearing member of the folding cart 100. In some embodiments, the second carrier 7 includes, but is not limited to, a bar, a planar frame, a space frame, a plate, or other shape, structure. In some embodiments, the second carrier 7 may bear weight directly, e.g. articles may be placed directly on the second carrier 7. In some embodiments, the second load bearing member 7 may indirectly bear load, for example, the second load bearing member 7 may be provided with other structures such as a basket, a box, a basket, a hook, a net, or a bag, and the like, and the second load bearing member 7 indirectly bears load when articles are placed in the other structures. The second load bearing member may also be load bearing in other ways.

The first support bar 2 and the second support bar 3 are members of the folding cart 100 that function as supports. The cross-section of the first support bar 2 and/or the cross-section of the second support bar 3 include, but are not limited to, circular, oval, rectangular, T-shaped, i-shaped, L-shaped, straight, etc. The first support bar 2 and the second support bar 3 may be rigid, may be adjustable in length, may be straight, or may be curved. A plate or other member functioning similarly to a rod may also be used as the first support bar 2 or the second support bar 3.

The first connecting piece 4 and the second connecting piece 5 are the components of the folding bicycle 100 which play the role of connecting and limiting. In some embodiments, the first connector 4 and the second connector 5 include, but are not limited to, a hinged structure, a rigid connection structure, a flexible connection structure, a socket structure, and the like. In some embodiments, the first connector 4 and/or the second connector 5 may be a separate component from the other components of the foldable wagon 100 or may be integrally formed with any of the components of the foldable wagon 100. In some embodiments, the second connector 5 restricts the second support bar 3 from moving in a particular direction (e.g., vertical). In some embodiments, the foldable wagon 100 is in a limit state after the first connecting member 4 and the second connecting member 5 are locked at a certain position.

In some embodiments, the first auxiliary element may be the first connecting element 4. In some embodiments, the first auxiliary element 18 may be an intermediate member connecting the first connecting element 4 and the first carrier element 1, for example, as shown in fig. 2, and the first auxiliary element 18 may be a rod, a bent rod, or the like. In some embodiments, the first auxiliary member 18 may be a curved rod, which is curved from the first bearing member 1 to the second support rod 3 and is movably connected with the second support rod 3 through the first connecting member 4.

In some embodiments, the second auxiliary element may be a second support bar 3. In some embodiments, the second auxiliary 19 may be an intermediate member connecting the second support bar 3 and the second carrier 7, for example, as shown in fig. 7, and the second auxiliary 19 may be a rod or the like.

The foldable wagon 100 can be unfolded or folded according to the use condition, wherein the first carrier 1, the first support bar 2, and the second support bar 3 are provided as movable members in the foldable wagon 100 to achieve the foldable performance of the foldable wagon 100.

In some embodiments, the first end 110 of the first carrier 1, the first end 21 of the first support strut 2 and the first end 71 of the second carrier 7 are all moveably connected to the mount 6. If the first bearing member 1 is a rod, the first end 110 of the first bearing member 1 may be any one of the two axial ends thereof; if the first supporting member 1 is a planar frame or a plate, the first end 110 of the first supporting member 1 can be any side edge thereof; if the first supporting member 1 is a space frame, the first end 110 of the first supporting member 1 can be any end surface thereof. The first end 21 of the first support rod 2 is either one of the two axial ends thereof.

In some embodiments, "movably connected" includes, but is not limited to, hinged, flexible, or removably connected. In some embodiments, the first end 110 of the first carrier 1 and/or the first end 21 of the first support bar 2 are hinged to the fixture 6 by a hinge, a pivot shaft, or the like; by means of the articulation, the first carrier 1 and/or the first supporting bar 2 can be rotated relative to the fixing 6. In some embodiments, the first end 110 of the first carrier 1 and/or the first end 21 of the first support rod 2 are flexibly connected to the fixing member 6 by a flexible joint, a connector with a spring vibration isolation hinge, or the like; by means of the flexible connection, the first carrier 1 and/or the first supporting bar 2 can be rotated relative to the fixing part 6 while allowing a certain deformation between the components, with a shock-absorbing effect. In some embodiments, the first end 110 of the first carrier 1 and/or the first end 21 of the first support bar 2 are detachably connected with the fixing member 6 by a snap, a screw fitting, or the like; by being detachably connected, the first carrier 1 and/or the first support bar 2 facilitates the detachment from the fixing member 6. In some embodiments, in the detachable connection manner, the relative angle between the first carrier 1 and/or the first supporting rod 2 and the fixing member 6 can be adjusted by adjusting the fastening position or the screwing depth, etc. In some embodiments, the removable connection may be in other ways.

In some embodiments, the second end 120 of the first supporting member 1 is connected to a first auxiliary member, the first auxiliary member is the same as the first connecting member 4 or is connected to the first connecting member 4, and the first auxiliary member is movably connected to at least one of the first supporting member 1 or the first connecting member 4. Wherein, similar to the first end 110 of the first load bearing member 1, the second end 120 of the first load bearing member 1 may be an end, a side or an end surface thereof, depending on the configuration of the first load bearing member 1. In some embodiments, the first auxiliary element is identical to the first connecting element 4, i.e. both can be one and the same component. For example, the first auxiliary element and the first connecting element 4 may be one and the same hinge or pivot axis. In some embodiments, the first auxiliary element is a different component from the first connecting element 4.

In some embodiments, the first connection 4 may be a hinge or a pivot shaft. In some embodiments, the second end 120 of the first carrier 1 is rotatably connected to the first connecting member 4. In some embodiments, the second end 120 of the first carrier 1 and the first connecting member 4 can also be detachably connected by a snap, a screw fitting, or the like. The moveable connection may be in other ways.

In some embodiments, the second end 22 of the first support bar 2 is movably connected with the second connecting member 5. The second end 22 of the first support rod 2 is the other end of the two ends in the axial direction opposite to the first end. In some embodiments, the second link 5 may be a hinge or a pivot shaft. In some embodiments, the second end 22 of the first support bar 2 is rotatably connected to the second link 5. In some embodiments, the second end 22 of the first support bar 2 and the second connector 5 may also be detachably connected by a snap, a screw fitting, or the like. The moveable connection may be in other ways.

In some embodiments, the first connecting member 4 is connected to the second support rod 3, and the second connecting member 5 is slidably connected to the second support rod 3.

In some embodiments, the first connector 4 may be rigidly connected to the second support bar 3. For example, when the first connecting member 4 is a hinge, the hinge may comprise a fixed portion and a rotating portion, the second supporting rod 3 is rigidly connected to the fixed portion of the hinge, and the second end 120 of the first bearing member 1 is connected to the rotating portion of the hinge. For another example, when the first connecting member 4 is a pivot shaft, the second supporting rod 3 is rigidly connected to the pivot shaft, and the second end 120 of the first supporting member 1 is rotatably connected to the pivot shaft. In some embodiments, the first connecting member 4 is directly connected to the second support bar 3. In some embodiments, the first connecting member 4 is indirectly connected to the second support bar 3 through other members.

In some embodiments, the second connecting member 5 is provided with a through hole or a sleeve, and the through hole or the sleeve is sleeved on the second supporting rod 3 so that the second connecting member 5 can slide relative to the second supporting rod 3. In some embodiments, the second connecting member 5 is provided with a sliding block, the second support rod 3 is provided with a sliding groove extending along the axial direction, and the sliding block is slidably embedded in the sliding groove so that the second connecting member 5 can slide relative to the second support rod 3. In some embodiments, the second connecting member 5 is provided with a groove, and the second support rod 3 is provided with a convex rail, and the groove is slidably covered on the convex rail, so that the second connecting member 5 can slide relative to the second support rod 3. The sliding connection may also be in other ways.

In some embodiments, the second end 71 of the second bearing member 7 is connected to a second auxiliary member, which is the same as the second support bar 3 or is connected to the second support bar 3, and the second auxiliary member is movably connected to at least one of the second bearing member 7 or the second support member. In some embodiments, the second auxiliary element is the same member as the second support bar 3. In some embodiments, the second auxiliary member is a different member from the second support bar 3.

In some embodiments, the at least two first carriers 1, the at least two first support bars 2, the second support bar 3, the at least two second carriers 7, the first connecting member 4, the second connecting member 5, the first auxiliary member, the second auxiliary member and the fixing member 6 of the folding cart 100 may be configured as a set of linkage mechanisms. In some embodiments, the folding cart 100 may include one or more sets of linkages. For example, the folding cart 100 may include two sets of linkages, one set on each of the left and right sides of the folding cart 100. As another example, the folding cart 100 may include a set of linkages that are positioned midway between the left and right sides of the folding cart 100. In some embodiments, the first auxiliary member may be a rod member, two first support rods 2, two second support rods 3, two second supporting members 7, a first connecting member 4, and a second connecting member 5 are respectively disposed on left and right sides of the foldable vehicle 100, the first auxiliary member extends along left and right directions of the foldable vehicle 100, left and right ends of the first auxiliary member are respectively fixedly connected to the second support rods 3, the first supporting member 1 is disposed at a middle position of the foldable vehicle along front and rear directions of the foldable vehicle 100, and the second end 120 of the first supporting member 1 is movably connected to the first auxiliary member through the first connecting member 4.

By the structural features and the connection relationship of the folding cart 100, the first carrier 1, the first support bar 2, and the second support bar 3 of the folding cart 100 are movably or slidably connected to each other to form a movable member, and the folding cart 100 can be changed in shape by relative rotation or sliding, for example, to have an unfolded state and a folded state. The number of each component is less, and the connection is flexible, is favorable to reducing the dead weight of folding car 100, reduces the activity noise between the component.

In some embodiments, the first load bearing member 1 and the second load bearing member 7 connected to the same fixing member 6 are of the same length, and the distance between the first end of the first load bearing member 1 and the first end of the second load bearing member 7 is equal to the length of the second support bar 3. In this way, the first bearing part 1, the second bearing part 7, the fixing part 6 and the second support rod 3 are constructed as a parallelogram mechanism, the opposite components are always kept parallel in the folding deformation process of the folding bicycle, and the angular displacement, the angular velocity and the angular acceleration of the first bearing part 1 and the second bearing part 7 are always equal in the rotation process, so that the stability of the folding deformation is improved.

In some embodiments, there are at least two first load bearing members 1 of the same length; there are at least two first support bars 2 of the same length; there are at least two second carriers 7 of the same length. In this way, the first supporting member 1, the first supporting rod 2, the second supporting member 7 and the fixing member 6 form a symmetrical structure with respect to the second supporting rod 3, so that the members at both sides of the second supporting rod 3 can keep synchronous movement during the folding and unfolding processes.

As shown in fig. 1, in some embodiments, the second connecting member 5 forms a stable connection with the first connecting member 4 after sliding upward along the second support bar 3. Wherein, the stable connection can be that the relative position of the second connecting piece 5 and the first connecting piece 4 is kept unchanged when the second connecting piece 5 does not slide downwards. In some embodiments, the second connector 5 is in direct contact with the first connector 4 to form a stable connection. For example, a stable connection is achieved by the abutment of a female and a male structure provided on the first and

second connectors

4, 5, respectively. In some embodiments, the second connector 5 is in indirect contact with the first connector 4 to form a stable connection. For example, a stable connection is achieved by intermediate structures such as joints, locking devices, etc.

When the second connecting piece 5 and the first connecting piece 4 form a stable support, the first supporting rod 2 forms a support for the first bearing piece 1. In some embodiments, the supporting action of the first support bar 2 may also act on other components through the second support bar 3.

In some embodiments, the folding cart 100 may further include a locking device, and the locking device may be configured to lock the second connecting member 5 in a stable connection with the first connecting member 4 after sliding upwards along the second supporting rod 3, so as to prevent relative shaking or movement between the first connecting member 4 and the second connecting member 5.

In some embodiments, the locking device may be a locking member, the locking member includes a locking groove and a locking block, the locking groove and the locking block may be respectively disposed on the first connecting member 4 and the second connecting member 5, the second connecting member 5 is close to the first connecting member 4 along the second support bar 3, and the locking groove is engaged with the locking block to lock and stabilize the stable connection between the first connecting member 4 and the second connecting member 5. In some embodiments, the locking device may be a bolt member. In some embodiments, the locking device may be as described with reference to fig. 3. The locking device can also take other various forms.

FIG. 2 is a partial schematic view of a folding cart according to some embodiments of the present disclosure.

As shown in fig. 2, the lower surface of the first connecting member 4 includes a convex portion 41, the upper surface of the second connecting member 5 includes a concave portion 51, and the convex portion 41 at least partially matches with the concave portion 51. The second connecting piece 5 approaches to the first connecting piece 4 along the second support bar 3, and the concave part 51 limits the convex part 41, so that the stable connection between the first connecting piece 4 and the second connecting piece 5 can be realized. The number of the convex portions is not limited.

In some embodiments, the protrusion 41 and the recess 51 cooperate to limit the relative displacement of the first link 4 and the second link 5 in the front-rear direction of the foldable wagon 100, and to limit the relative displacement of the first link 4 and the second link 5 in the vertical direction. In some embodiments, the protruding portion 41 and the recessed portion 51 cooperate to limit the relative displacement of the first connecting member 4 and the second connecting member 5 in the vertical direction, the second connecting member 5 is sleeved on the second support rod 3 through a through hole or a sleeve, and the displacement of the second connecting member 5 in the front-back direction of the foldable wagon 100 is limited by the cooperation of the through hole and the sleeve with the second support rod 3.

In some embodiments, one of the convex portions 41 may be a convex arc surface, the concave portion 51 may be a concave arc surface, the convex arc surface and the concave arc surface are matched with each other, and when the first connecting piece 4 and the second connecting piece 5 are stably connected, the convex portion 41 abuts against the concave portion 51, so that the abutment between the first connecting piece 4 and the second connecting piece 5 can be stably maintained.

In some embodiments, one of the raised portions 41 may be any surface that is raised. For example, one of the convex portions 41 may be a convex continuous arc surface, a polygonal surface, or the like, and the concave portion 51 is fitted with the convex portion 41.

In some embodiments, the protruding portion 41 may comprise at least one column structure (e.g. a prism or a cylinder, etc.), and the recessed portion 51 may comprise at least one groove structure cooperating with the column structure, and the column structure abuts against the groove structure when the first connecting member 4 and the second connecting member 5 are stably connected. The column structure is abutted with the groove structure, and can be a column structure corresponding to one groove structure or a plurality of column structures corresponding to one groove structure.

FIG. 3 is a schematic illustration of a folding cart in a semi-folded configuration according to some embodiments of the present disclosure; FIG. 4 is a schematic illustration of a folding cart in a fully folded configuration according to some embodiments of the present disclosure.

As shown in fig. 2 to 4, in some embodiments, the first distance and the second distance become smaller after the second support rod 3 slides upward relative to the second connecting member 5.

The first distance is the distance between the first bearing member 1 and the first support bar 2. The distance represents the proximity of the two, and may be, for example, the minimum of the distances between one point of the two. The distance may also be represented in other ways.

The second distance is the distance between the fixing member 6 and the second supporting rod 3, and the measurement mode is the same as the first distance.

In some embodiments, as shown in fig. 2, the second link 5 forms a stable connection with the first link 4 when the foldable wagon 100 is in the unfolded state. As shown in fig. 3, when the second support rod 3 slides upwards relative to the second connecting member 5, so that the foldable vehicle 100 changes to the folded state, the first distance between the first supporting member 1 and the first support rod 2 is reduced, and the second distance between the fixing member 6 and the second support rod 3 is also reduced, so that the peripheral size of the foldable vehicle 100 can be reduced, the occupied space is reduced, and the storage is facilitated.

In some embodiments, the first end 110 of the first carrier 1 may be provided with a connecting piece 131, and the first carrier 1 is movably connected with the fixing member 6 through the connecting piece 131. In some embodiments, the connecting piece 131 is configured as a flat arc, so as to avoid the first end 110 of the first carrier 1 from interfering with the movement of the fixing member 6 during rotation.

Fig. 5 is a schematic view of a first carrier shown in accordance with some embodiments herein.

As shown in fig. 5A, the first carrier 1 may further comprise or support a first carrier unit 9.

The first carrier unit 9 may be a component for placing an article. The first carrier unit 9 may have various types of structures, such as a frame, a box, a plate, etc.

In some embodiments, the first carrier unit 9 may be foldable or detachable. For example, when the folding cart is folded, the first carrier unit 9 can be folded together with the folding cart 100; or the first carrier unit 9 is detached and only the folding cart 100 is folded individually.

In some embodiments, the first carrier 1 may directly serve as the first carrier unit 9. For example, the object of loading and shipping can be achieved by placing the object on the first carrier 1 in various forms such as hanging or placing, and the first loading unit 9 is the first carrier 1 itself.

In some embodiments, the first carrier unit 9 may be a component that is directly or indirectly supported by the first carrier 1, and the first carrier 1 supports the first carrier unit 9. For example, the first carrier unit 9 may be hung on the first carrier 1. For example, the first carrier 1 may be fixedly or movably connected to other components for carrying the first carrier unit 9. As shown in fig. 5B, a bottom frame 10 is disposed on the first carrier 1, two ends of the bottom frame 10 are movably connected to the fixing member 6, and two central positions of two sides of the bottom frame 10 are movably connected to the first supporting rod 2 and the second supporting rod 3. When an object is placed in/on the first carrier unit 9, the first carrier 1 supports the first carrier unit 9 through the first support bar 2 and the second support bar 3, and at this time, the first carrier 1 indirectly supports the first carrier unit 9.

The bottom frame 10 may be a member for placing the first carrier unit 9. The structure is not limited, and the structure may be a thin plate or other structures such as a rail.

The bottom frame 10 may be a whole or a combination of parts. In some embodiments, the bottom frame 10 may include a front bottom frame 101 and a rear bottom frame 102, and the front bottom frame 101 and the rear bottom frame 102 may have the same or different structures. One ends of the front bottom frame 101 and the rear bottom frame 102 are movably connected with the fixing member 6, and the other corresponding ends are movably connected with each other and movably connected with the first supporting rod 2 and the second supporting rod 3.

By means of some embodiments related to the first carrier unit 9, a device with a higher carrying position can be formed, which is suitable for more application scenarios. Some structures associated with this may be referred to as upper bottom frame structures.

Fig. 6 is a schematic view of a first carrier unit according to some embodiments of the present disclosure.

As shown in fig. 6A, the first carrier unit 9 has a removable side wall 91.

The side wall 91 may be a side elevation of an element enclosed by a combination of several planes. In some embodiments, the sidewalls may include one or more of a front sidewall 911, a back sidewall 912, a left sidewall 913, and a right sidewall 914. The side wall may also be other ways, such as a part of an arc.

The removable can be foldable or detachable.

The number of side walls that the first carrier unit 9 may comprise may be any number, and the number of removable side walls 91 may also be any number.

The side wall 91 may be in various forms such as planar, net or other forms.

The number of removals may be one or more, in different uses. In some embodiments, the foldable wagon 100 may be a mobile seat if one of the left side wall 913 or the right side wall 914 of the first carrier unit 9 is removed 91, see fig. 6B.

In some embodiments, the three side walls 91 of the left side wall 913, the right side wall 914 and the rear side wall 912 of the first carrier unit 9 and/or the rear armrest rail 112 of the armrest rail 11 can be removed, and the foldable vehicle 100 can be a moving lounge or an open platform, as shown in fig. 6C.

The handrail 11 may be a member for providing a user to hold or push. In some embodiments, the arm rest rails 11 may include a front arm rest rail 111 and a rear arm rest rail 112. The front handrail 111 is sleeved in the front end fixing piece 6 of the folding vehicle 100 and can be detached; the rear handrail 112 is sleeved in the rear end fastener 6 of the folding bicycle 100 and can be detached as well.

In some embodiments, the four side walls 91 and/or the front handrail rail 111 and the rear handrail rail 112 of the first carrier unit 9 can be removed, and the foldable wagon 100 can be a flat surface foldable wagon or a mobile dining wagon, as shown in fig. 6D.

The handrail in some of the above embodiments is optional, and the foldable vehicle may not include part or all of the handrail.

Some embodiments of the present disclosure adopt a method of removing the side wall of the first carrier unit and the armrest rail of the foldable vehicle to change the shape of the foldable vehicle, so as to expand the functions and uses of the device.

FIG. 7 is a schematic view of a folding cart according to some embodiments of the present disclosure.

As shown in fig. 7, the foldable vehicle 100 further includes wheels 12 and a travel limiting device 13.

The wheels 12 may be elements for rolling, making the folding cart 100 movable. The wheels 12 may be of various numbers and forms. In some embodiments, the wheels 12 may include a universal wheel 121 and a fixed wheel 122. Wherein, the universal wheel 121 is arranged at the front end of the folding trolley 100 and is positioned in the middle of the device, and the fixed wheel 122 is arranged at the rear end of the folding trolley 100 and is positioned at two sides of the device; the universal wheel 121 is movably connected with the universal wheel component 14, and the fixed wheel 122 is movably connected with the fixed wheel component 15.

The castor 121 can be rotated through 360 deg. for adjusting the direction of movement of the device. In some embodiments, the universal wheel 121 may be one or more.

The fixed wheel 122 may be used to assist in device movement. Likewise, in some embodiments, the fixed wheel 122 may be one or more.

In some embodiments, the universal wheels 121 are located at an intermediate position of the fixed wheels 122 when the foldable wagon 100 is in the folded state, to save storage space of the device.

The universal wheel component 14 is used for connecting and fixing the universal wheel 121 and driving the universal wheel 121 to turn. The fixed wheel assembly 15 is used to connect the fixed wheel 122. The universal wheel component 14 and the fixed wheel component 15 are both fixedly connected with the fixing component 6 of the folding bicycle 100.

The travel limiting device 13 can be used to brake the folding cart 100. The restriction device 13 may be arranged in various ways. Such as providing a brake pedal at the wheel 12 or a brake lever at the rear end of the folding cart 100. In some embodiments, the folding cart 100 may be braked using the draw bar 16. For example, when the pull rod 16 is rotated into contact with the ground, braking of the folding cart 100 may be achieved; or the brake is controlled by the pull rod 16 to realize braking. Wherein, the pull rod 16 can be a component used for a hand pulling or pushing device, and the pull rod 16 is movably connected with the universal wheel component 14. The restriction device 13 may also be implemented in other ways.

FIG. 8 is a schematic diagram of a folding cart according to some embodiments of the present disclosure.

As shown in fig. 8, the folding cart 100 further comprises a second bearing member 7 for bearing weight, the second bearing member 7 being directly or indirectly movably connected with the second support bar 3. In some embodiments, the angle of the second carrier 7 relative to the fixture 6 changes during folding of the folding cart 100.

In some embodiments, the second load bearing member 7 bears similar load to the first load bearing member 1. In some embodiments, the second load bearing member 7 may be solely load bearing. In some embodiments, the second load bearing member 7 may be load bearing in cooperation with the first load bearing member 1. The second load bearing member 7 may also be load bearing in other ways.

In some embodiments, the second carrier 7 may include, but is not limited to: rods, flat frames, space frames, plates or other members. In some embodiments, the second load bearing member 7 may comprise a plurality of bars, which are commonly used for load bearing.

In some embodiments, the first end 71 of the second carrier 7 may be movably connected with the mount 6. If the second bearing member 7 is a rod, the first end 71 of the second bearing member 7 may be any one of the two ends in the axial direction; if the second supporting member 7 is a planar frame or a plate, the first end 71 of the second supporting member 7 can be any side thereof; if the first carrier 1 is a three-dimensional frame, the first end 71 of the second carrier 7 can be any side surface thereof. The first end 71 of the second supporting member 7 is movably connected to the fixing member 6 in a similar manner as the first end 110 of the first supporting member 1 is movably connected to the fixing member 6, for example, the first end 71 of the second supporting member 7 is hinged, flexibly connected, or detachably connected to the fixing member 6, so that the relative angle between the second supporting member 7 and the fixing member 6 can be adjusted, and the folding purpose of the folding cart 100 is achieved.

In some embodiments, the second end 72 of the second carrier 7 may be directly movably connected with the second support bar 3. For example, the second end 72 of the second carrier 7 may be hingedly, flexibly or detachably connected to the second support bar 3. In some embodiments, the second end 72 of the second bearing 7 may be indirectly movably connected with the second support bar 3 by the third connecting member 8. In some embodiments, the third connecting member 8 may be rigidly or movably connected to the second support bar 3, and the second end 72 of the second bearing member 7 may be movably connected to the third connecting member 8. For example, the third connecting member 8 is a pivot shaft, which is fixed to the second support rod 3, and the second end 72 of the second bearing member 7 is rotatably connected to the pivot shaft. Wherein, like the first end 71 of the second carrier 7, the second end 72 of the second carrier 7 may be an end, a side or a side thereof, depending on the structure of the second carrier 7. The first support rod 2 and the first carrier 1, the fixing part 6 form a structure which can support the second carrier 7 via the second support rod 3.

In some embodiments, the second ends 72 of the two second carriers 7 may be movably connected with the second support bar 3 at the same time. In some embodiments, the second ends of the two second carriers 7 may be simultaneously movably connected with the third connecting member 8. In some embodiments, the second carrier 7 comprises a plurality of rods that are simultaneously articulatable with the third link 8.

As shown in fig. 9, the second carrier 7 may further comprise or support a second carrier unit 17.

The second carrier unit 17 may refer to a different component than the first carrier unit 9, but may equally be used for placing objects. The form of the second carrier unit 17 can be referred to the description of the first carrier unit 9, but other forms are also possible. The second carrier unit 17 may be the same as or different from the first carrier unit 9.

The manner in which the second carrier 7 comprises or supports the second carrier unit 17 can be referred to in the description of the first carrier 1, but can also take other forms.

In some embodiments, the second supporting member 7, the first supporting rod 2, the second supporting rod 3, the fixing member 6 and the like enclose a storage space, and the articles can be directly placed on the second supporting member 7, in which case the second supporting member 7 corresponds to the second loading unit 17 for loading the articles.

In some embodiments, the second supporting member 7, the first supporting rod 2, the second supporting rod 3, the fixing member 6 and the like enclose a storage space, and the second carrier unit 17 can be disposed on the second supporting member 7 and in the storage space, where the second carrier unit 17 is used for placing objects and limiting the movement of the objects, and the second supporting member 7 is in direct contact with the second carrier unit 17 and is used for supporting the second carrier unit 17.

By means of some embodiments related to the second carrier unit 17, a device with a larger carrying space can be formed. Some structures associated with this may be referred to as sub-bottom frame structures.

In some embodiments, the first cross-sectional dimension of the second support bar 3 is smaller than the second cross-sectional dimension. The first cross-sectional dimension refers to a cross-sectional dimension of the first location and the second cross-sectional dimension refers to a cross-sectional dimension of the second location, the first location being below the second location.

The cross-sectional size here may be various indexes reflecting the cross-sectional size. For example, the cross-sectional dimension may be the diameter, radius of a circular rod, side length of a polygonal rod, circumference of a rod, and the like. The first cross-sectional dimension is the same as the second cross-sectional dimension as specified.

The first position is located below the second position. The direction is determined according to the direction of the second support bar 3 when the folding cart is in use.

In some embodiments, the second linkage 5 includes a resistance device such that the second linkage has a resistance to sliding from the first position to the second position.

In some embodiments, the second support bar 3 may pass through a hole belonging to the second connector 5, and the resistance means may be an elastic means arranged inside the hole of the second connector 5. For example, the elastic means may include, but is not limited to, a spring, an elastic rubber, or the like having a "compression-rebound" characteristic. The holes may be peripherally closed or may be unsealed. The holes may be of various shapes, such as circular, polygonal, etc.

By means of some embodiments described above, the folding cart 100 can be made relatively stable in the folded-up state.

In some embodiments, the resistance device may be adjustable, and the resistance experienced by the foldable wagon 100 when deployed may vary with adjustment, and thus the speed of deployment may vary.

In some embodiments, the second support rod is connected to or includes one or more limiting devices for limiting the second connecting member from sliding from bottom to top. The stop means may be of various forms, such as detents or the like. Through stop device, can control the degree that folding car was folded up or was expanded.

In some embodiments, the first carrier unit 9 or the second carrier unit 17 may vary in length. The first carrier unit 9 or the second carrier unit 17 may be a telescopic or foldable rod, plate, box, net or frame, etc., or other mechanism or device that can change length. By changing the length of the first carrier unit 9 or the second carrier unit 17, the storage manner or the effective volume of the folding cart 100 can be changed. In cooperation with some of the previous embodiments, the folding cart 100 can be formed into carriers of different lengths with different degrees of opening of the folding cart.

Benefits that may be brought about by some embodiments of the present application include, but are not limited to: (1) the structure is simple, the number of movable parts is small, and the problems of strength reduction, large movable clearance, high noise and the like caused by excessive movable parts can be effectively avoided; (2) the folding vehicle has rich use scenes and wide application, and the structure of the folding vehicle can be changed according to different use scenes and applications; (3) when the foldable bicycle is folded and unfolded, due to the symmetry of the structure in the foldable bicycle, the foldable bicycle can be synchronously folded and unfolded from front to back, and the folded foldable bicycle is always kept in a standing state, so that the foldable bicycle is convenient to carry or operate by a user. It is to be noted that different embodiments may produce different advantages, and in different embodiments, any one or combination of the above advantages may be produced, or any other advantages may be obtained.

Having thus described the basic concept, it will be apparent to those skilled in the art that the foregoing detailed disclosure is to be regarded as illustrative only and not as limiting the present specification. Various modifications, improvements and adaptations to the present description may occur to those skilled in the art, although not explicitly described herein. Such modifications, improvements and adaptations are proposed in the present specification and thus fall within the spirit and scope of the exemplary embodiments of the present specification.

Similarly, it should be noted that in the foregoing description of embodiments of the specification, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one or more of the embodiments. This method of disclosure, however, is not intended to imply that more features are required than are expressly recited in the claims. Indeed, the embodiments may be characterized as having less than all of the features of a single embodiment disclosed above.

Finally, it should be understood that the embodiments described herein are merely illustrative of the principles of the embodiments of the present disclosure. Other variations are also possible within the scope of the present description. Thus, by way of example, and not limitation, alternative configurations of the embodiments of the specification can be considered consistent with the teachings of the specification. Accordingly, the embodiments of the present description are not limited to only those embodiments explicitly described and depicted herein.

Claims

1. A folding cart, comprising: the device comprises at least two first bearing parts, at least two first supporting rods, a second supporting rod, at least two second bearing parts, a first connecting piece, a second connecting piece, a first auxiliary piece, a second auxiliary piece and a fixing piece;

the first end of the first bearing piece, the first end of the first supporting rod and the first end of the second bearing piece are movably connected with the fixing piece;

the second end of the first bearing piece is connected with the first auxiliary piece, the first auxiliary piece is the same as the first connecting piece or is connected with the first connecting piece, and the first auxiliary piece is movably connected with the first bearing piece or at least one of the first connecting piece;

the second end of the first supporting rod is movably connected with the second connecting piece;

the first connecting piece is connected with the second supporting rod, and the second connecting piece is connected with the second supporting rod in a sliding manner;

the second end of the second bearing part is connected with the second auxiliary part, the second auxiliary part is the same as the second supporting rod or is connected with the second supporting rod, and at least one of the second auxiliary part and the second bearing part or the second supporting part is movably connected.

2. The folding cart of claim 1 wherein said second connector forms a stable connection with said first connector when said second connector slides up said second support bar.

3. A foldable wagon according to claim 1, wherein the first load bearing member and the second load bearing member connected to the same fixing member have the same length, and the distance between the first end of the first load bearing member and the first end of the second load bearing member is equal to the length of the second supporting bar.

4. A foldable wagon according to claim 1 or 3, wherein there are at least two of the first load bearing members which are of the same length; at least two first supporting rods are identical in length; there are at least two of said second load bearing members of the same length.

5. A folding cart according to claim 2, wherein said support means further comprises locking means for locking said stable connection.

6. The folding cart of claim 2 wherein said first connector lower surface includes a raised portion and said second connector upper surface includes a recessed portion, said raised portion at least partially mating with said recessed portion.

7. The foldable wagon of claim 1, wherein when the second support bar slides upward relative to the second connecting member, a first distance between the first load bearing member and the first support bar and a second distance between the fixing member and the second support bar become smaller.

8. A folding cart according to claim 1, wherein said first carrier comprises or supports a first carrier unit.

9. The folding cart of claim 8, wherein said first carrier unit has removable side walls.

10. The folding cart of claim 1, wherein said support means further comprises wheels, and means for limiting travel.

11. A folding cart according to claim 1, wherein said second carrier comprises or supports a second carrier unit.