Folding cart

Abstract

The utility model provides a folding cart which comprises a cart frame and a wheel assembly, the cart frame comprises a first frame body, a second frame body and a bottom frame, and the first frame body and the second frame body are respectively installed on the bottom frame in a foldable mode. The wheel assembly comprises a first wheel, a second wheel, a third wheel, a fourth wheel and a fifth wheel, wherein the first wheel and the second wheel are detachably installed on the first frame body through first connecting pieces, the third wheel and the fourth wheel are detachably installed on the second frame body through second connecting pieces, and the fifth wheel is detachably installed on the bottom frame through a third connecting piece. The first wheel, the second wheel, the third wheel and the fourth wheel form a rectangular structure, and the fifth wheel is located in the center of the rectangular structure. The folding cart solves the technical problems that in the prior art, a folding cart is poor in weight bearing capacity, and wheels are inconvenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of outdoor equipment, and in particular relates to a folding cart. Background Art

[0002] At present, outdoor enthusiasts usually need to be equipped with a folding cart during outdoor activities in order to place items such as tents or fishing tools. The existing folding cart includes a frame, four universal wheels respectively arranged at the four corners of the frame, and a canvas arranged around the frame. When in use, the folding cart is supported by the universal wheels at the four corners. However, when items are placed in the car, the pressure of the items on the middle part of the folding cart will be relatively large. Since the load-bearing points of the folding cart are on the universal wheels at the four corners, the force-bearing capacity of the middle part of the folding cart is poor, which affects the load-bearing weight of the folding cart. In addition, the existing universal wheels are installed on the frame through a hinged shaft, which is not convenient for disassembly and assembly, resulting in a more difficult maintenance process. Utility Model Content

[0003] The utility model aims to provide a foldable cart, so as to at least partially solve the technical problems of poor weight bearing capacity and inconvenient assembly and disassembly of wheels of the foldable cart in the prior art.

[0004] In order to achieve the above object, the utility model provides a folding cart, comprising:

[0005] A frame, the frame comprising a first frame body, a second frame body and a bottom frame, the first frame body and the second frame body are respectively foldably mounted on the bottom frame;

[0006] a wheel assembly, the wheel assembly comprising a first wheel and a second wheel detachably mounted on the first frame through a first connecting member, a third wheel and a fourth wheel detachably mounted on the second frame through a second connecting member, and a fifth wheel detachably mounted on the underframe through a third connecting member;

[0007] The first wheel, the second wheel, the third wheel and the fourth wheel form a rectangular structure, and the fifth wheel is located at the center of the rectangular structure.

[0008] In some embodiments, the folding cart further comprises:

[0009] A barrier cloth is disposed around the circumference of the frame and is fixedly connected to the first frame and the second frame.

[0010] In some embodiments, the first frame comprises:

[0011] A first column, wherein the bottom end of the first column is connected to the base frame;

[0012] a first connecting rod, one end of which is hinged to the base frame, and the other end of which is hinged to the top end of the first column;

[0013] A second connecting rod, one end of which is hinged to the base frame, and the second connecting rod and the first connecting rod are arranged crosswise and hinged at the intersection;

[0014] a third connecting rod, one end of which is hinged to the second connecting rod, and the other end of which is hinged to the base frame;

[0015] a fourth connecting rod, one end of which is hinged to the base frame, and the fourth connecting rod and the third connecting rod are arranged in a cross shape and are hinged at the intersection;

[0016] A second column, wherein the bottom end of the second column is connected to the base frame, and the top end of the second column is hinged to the fourth connecting rod.

[0017] In some embodiments, the first connector includes:

[0018] A main body, the bottom of which has a circular protrusion, and the main body is mounted on the wheel;

[0019] A T-shaped circular groove, wherein the T-shaped circular groove is mounted on the first frame, and the circular protrusion is clamped in the T-shaped circular groove to form an accommodating space;

[0020] A plane bearing is installed in the accommodating space.

[0021] In some embodiments, the second frame comprises:

[0022] A first support column, wherein the bottom end of the first support column is connected to the base frame;

[0023] a first hinged rod, one end of which is hinged to the base frame, and the other end of which is hinged to the top end of the first support column;

[0024] A second hinged rod, one end of which is hinged to the base frame, and the second hinged rod is cross-arranged with the first hinged rod and hinged at the intersection;

[0025] a third hinged rod, one end of which is hinged to the second hinged rod, and the other end of which is hinged to the base frame;

[0026] A fourth hinged rod, one end of which is hinged to the base frame, and the fourth hinged rod is cross-arranged with the third hinged rod and hinged at the intersection;

[0027] A second support column, wherein the bottom end of the second support column is connected to the base frame, and the top end of the second support column is hinged to the fourth hinge rod.

[0028] The utility model provides a foldable cart comprising a frame and a wheel assembly, wherein the frame comprises a first frame body, a second frame body and a bottom frame, the first frame body and the second frame body are respectively foldably mounted on the bottom frame; the wheel assembly comprises a first wheel and a second wheel detachably mounted on the first frame body through a first connecting member, a third wheel and a fourth wheel detachably mounted on the second frame body through a second connecting member, and a fifth wheel detachably mounted on the bottom frame through a third connecting member; the first wheel, the second wheel, the third wheel and the fourth wheel form a rectangular structure, and the fifth wheel is located at the center of the rectangular structure.

[0029] When it is necessary to place items in the vehicle, the first frame and the second frame are spread apart to form a storage space for the items, and the first to fifth wheels can all be supported, thereby increasing the load-bearing point in the middle through the fifth wheel, improving the force-bearing performance of the folding cart and increasing the carrying capacity of the cart; and all wheels in the wheel assembly can be detachably mounted on the frame, which is convenient for disassembly and assembly, and reduces the difficulty of wheel maintenance. This solves the technical problem of poor weight bearing capacity and inconvenient wheel disassembly and assembly in the prior art folding carts. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is one of the structural schematic diagrams of the folding cart provided by the utility model;

[0031] Figure 2 The second structural schematic diagram of the foldable cart provided by the utility model.

[0032] Description of reference numerals:

[0033] 1-first frame, 2-second frame, 3-bottom frame;

[0034] 11-first column, 12-first connecting rod, 13-second connecting rod, 14-third connecting rod, 15-fourth connecting rod;

[0035] 16- second connecting rod;

[0036] 21-first support column, 22-first hinged rod, 23-second hinged rod, 24-third hinged rod;

[0037] 25- fourth hinge rod, 26- second support column. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0039] Please refer to Figure 1-Figure 2 In a specific embodiment, the foldable cart provided by the utility model includes a frame and a wheel assembly; wherein the frame includes a first frame body 1, a second frame body 2 and a bottom frame 3, and the first frame body 1 and the second frame body 2 are respectively foldably mounted on the bottom frame 3; the wheel assembly includes a first wheel and a second wheel detachably mounted on the first frame body 1 through a first connecting member, a third wheel and a fourth wheel detachably mounted on the second frame body 2 through a second connecting member, and a fifth wheel detachably mounted on the bottom frame 3 through a third connecting member; the connection line between the first wheel, the second wheel, the third wheel and the fourth wheel forms a rectangular structure, and the fifth wheel is located at the center of the rectangular structure, and the bottom frame 3 can be a square aluminum alloy frame, which can be composed of multiple aluminum alloy tubes.

[0040] In order to prevent the internal objects from slipping, the folding cart further comprises a barrier cloth, which is arranged around the circumference of the frame and fixedly connected to the first frame body 1 and the second frame body 2. The barrier cloth can be made of linen or tarpaulin.

[0041] Specifically, the first frame 1 includes a first column 11, a first connecting rod 12, a second connecting rod, a third connecting rod 14, a fourth connecting rod 15 and a second column; wherein, the bottom end of the first column 11 is connected to the base frame 3, one end of the first connecting rod 12 is hinged to the base frame 3, and the other end thereof is hinged to the top end of the first column 11, one end of the second connecting rod is hinged to the base frame 3, the second connecting rod and the first connecting rod 12 are cross-arranged and hinged at the intersection, one end of the third connecting rod 14 is hinged to the second connecting rod, and the other end thereof is hinged to the base frame 3, one end of the fourth connecting rod 15 is hinged to the base frame 3, the fourth connecting rod 15 is cross-arranged with the third connecting rod 14 and hinged at the intersection, the bottom end of the second column is connected to the base frame 3, and the top end of the second column is hinged to the fourth connecting rod 15.

[0042] In the structure of the first frame 1, since the first connecting rod 12 and the second connecting rod, and the third connecting rod 14 and the fourth connecting rod 15 are cross-connected and hinged, when subjected to force, the ends of the first connecting rod 12 and the second connecting rod, and the ends of the third connecting rod 14 and the fourth connecting rod 15 can be close to or away from each other, respectively, and the first frame 1 can be folded when the ends of the connecting rods are close to each other, and can be unfolded when the ends of the connecting rods are away from each other. It should be understood that since each connecting rod and the column, and each connecting rod and the base frame 3 are all hinged structures, the column and the base frame 3 will not interfere with the movement of each connecting rod, thereby ensuring the smooth unfolding and folding of the first frame 1. Among them, each connecting rod and each column can be in the form of a steel pipe.

[0043] In some embodiments, the first connector includes:

[0044] A main body, the bottom of which has a circular protrusion, and the main body is mounted on the wheel;

[0045] A T-shaped circular groove, wherein the T-shaped circular groove is mounted on the first frame 1, and the circular protrusion is clamped in the T-shaped circular groove to form an accommodating space;

[0046] A plane bearing is installed in the accommodating space.

[0047] Specifically, the first connecting member is a nylon lock, such as Figure 2 As shown, the circular protrusion on the bottom of the main body cooperates with the T-shaped circular ring groove to fix and lock the plane axis. The principle is that a raised center slide is provided inside the opening at the upper end of the main part, and the slide is equipped with a buckle to make it smooth; the raised keels on the four sides serve to be placed in the iron pipe to stabilize it, and secondly, a circular hole is provided on the outside of the iron pipe, and screws can be used to fix the iron pipe and the internal keel. The center hole of the main part is a circular cylinder, with a through hole on the upper side and a slide on the inside. The bottom of the main part is matched with a T-shaped ring lock buckle, which mainly cooperates with the bottom of the main part to lock the plane bearing. The T-shaped ring groove cooperates with the bottom of the main part to lock the plane bearing. A spring is placed in the circular hole designed at the back of the buckle to make the buckle move on the slide. The side slide of the buckle cooperates with the inner slide of the upper end of the main part to move. The front section of the buckle is designed to be cylindrical, which acts on the buckle to form a button (its assembly spring is put into the slide): the main part is put into a circular iron pipe, so that the buckle cylinder extends from the circular hole on the circular pipe, and the buckle is pressed to slide backward to telescope: the wheel fixing frame (iron bolt or iron column and the groove on the iron column) is inserted into the fixing to touch the telescopic buckle card (the buckle is controlled to telescope by a spring): press the buckle circle to telescope inward so that the wheel fixing frame can be moved out.

[0048] In some embodiments, the second frame 2 includes a first support column 21, a first hinged rod 22, a second hinged rod 23, a third hinged rod 24, a fourth hinged rod 25, and a second support column 26; wherein, the bottom end of the first support column 21 is connected to the base frame 3, one end of the first hinged rod 22 is hinged to the base frame 3, and the other end thereof is hinged to the top end of the first support column 21, one end of the second hinged rod 23 is hinged to the base frame 3, the second hinged rod 23 and the first hinged rod 22 are cross-arranged and hinged at the intersection, one end of the third hinged rod 24 is hinged to the second hinged rod 23, and the other end thereof is hinged to the base frame 3, one end of the fourth hinged rod 25 is hinged to the base frame 3, the fourth hinged rod 25 and the third hinged rod 24 are cross-arranged and hinged at the intersection, the bottom end of the second support column 26 is connected to the base frame 3, and the top end of the second support column 26 is hinged to the fourth hinged rod 25.

[0049] In the structure of the second frame 2, since the first hinge rod 22 and the second hinge rod 23, and the third hinge rod 24 and the fourth hinge rod 25 are cross-connected and hinged, when subjected to force, the ends of the first hinge rod 22 and the second hinge rod 23, and the ends of the third hinge rod 24 and the fourth hinge rod 25 can be close to or away from each other, respectively. When the ends of the hinge rods are close to each other, the second frame 2 can be folded, and when the ends of the hinge rods are away from each other, the second frame 2 can be unfolded. It should be understood that since each hinge rod and the support column, and each hinge rod and the base frame 3 are hinged structures, the support column and the base frame 3 will not interfere with the movement of each hinge rod, thereby ensuring the smooth unfolding and folding of the second frame 2. Among them, each hinge rod and each support column can be in the form of a steel pipe.

[0050] In some embodiments, the second connecting member is a detachable main frame rear wheel fixing member, and the raised keels on the four sides of the detachable main frame rear wheel fixing member serve to be placed in the iron pipe to stabilize it. A round hole is provided on the outside of the iron pipe, and screws can be used to fix the iron pipe to the internal keel; the square inner hole designed in the center of the main body can better stabilize the wheel frame and prevent it from rotating easily; therefore, the rear wheel adopts a detachable wheel frame with a fixed direction, and the slide in the upper through hole is matched with a buckle to stabilize the loading and unloading of the wheel frame.

[0051] In some embodiments, the third connecting member is a detachable center frame fixing member. The center member adds a detachable function to the original member, which increases convenience, improves weighing capacity, and other advantages... The center member extends the wheel frame support pipeline and quick disassembly function under the original member: the center member fixes four iron pipes extending to the four main frames, and the plastic parts play a connecting and supporting role:

[0052] In the above specific embodiment, the foldable cart provided by the utility model includes a frame and a wheel assembly, wherein the frame includes a first frame body, a second frame body and a base frame, and the first frame body and the second frame body are respectively foldably installed on the base frame; the wheel assembly includes a first wheel and a second wheel detachably installed on the first frame body through a first connecting member, a third wheel and a fourth wheel detachably installed on the second frame body through a second connecting member, and a fifth wheel detachably installed on the base frame through a third connecting member; the first wheel, the second wheel, the third wheel and the fourth wheel form a rectangular structure, and the fifth wheel is located at the center of the rectangular structure.

[0053] When it is necessary to place items in the vehicle, the first frame and the second frame are spread apart to form a storage space for the items, and the first to fifth wheels can all be supported, thereby increasing the load-bearing point in the middle through the fifth wheel, improving the force-bearing performance of the folding cart and increasing the carrying capacity of the cart; and all wheels in the wheel assembly can be detachably mounted on the frame, which is convenient for disassembly and assembly, and reduces the difficulty of wheel maintenance. This solves the technical problem of poor weight bearing capacity and inconvenient wheel disassembly and assembly in the prior art folding carts.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0059] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A folding cart, characterized in that: include: A frame, the frame comprising a first frame body (1), a second frame body (2) and a bottom frame (3), the first frame body (1) and the second frame body (2) being respectively foldably mounted on the bottom frame (3); A wheel assembly, the wheel assembly comprising a first wheel and a second wheel detachably mounted on the first frame (1) via a first connecting member, a third wheel and a fourth wheel detachably mounted on the second frame (2) via a second connecting member, and a fifth wheel detachably mounted on the underframe (3) via a third connecting member; The first wheel, the second wheel, the third wheel and the fourth wheel form a rectangular structure, and the fifth wheel is located at the center of the rectangular structure.

2. The folding cart according to claim 1, characterized in that: The folding cart also includes: A barrier cloth is arranged around the circumference of the frame and is fixedly connected to the first frame body (1) and the second frame body (2).

3. The folding cart according to claim 1, characterized in that: The first frame (1) comprises: A first column (11), the bottom end of the first column (11) being connected to the base frame (3); A first connecting rod (12), one end of which is hinged to the base frame (3), and the other end of which is hinged to the top end of the first column (11); A second connecting rod, one end of which is hinged to the base frame (3), and the second connecting rod and the first connecting rod (12) are arranged crosswise and hinged at the intersection; a third connecting rod (14), one end of the third connecting rod (14) being hinged to the second connecting rod, and the other end of the third connecting rod (14) being hinged to the base frame (3); a fourth connecting rod (15), one end of the fourth connecting rod (15) being hinged to the base frame (3), the fourth connecting rod (15) and the third connecting rod (14) being arranged in a cross shape and being hinged at the intersection; A second column, wherein the bottom end of the second column is connected to the base frame (3), and the top end of the second column is hinged to the fourth connecting rod (15).

4. The folding cart according to claim 3, characterized in that: The first connecting member comprises: A main body, the bottom of which has a circular protrusion, and the main body is mounted on the wheel; A T-shaped circular groove, the T-shaped circular groove is mounted on the first frame (1), the circular protrusion is clamped in the T-shaped circular groove, and forms a receiving space; A plane bearing is installed in the accommodating space.

5. The folding cart according to claim 1, characterized in that: The second frame (2) comprises: A first support column (21), the bottom end of the first support column (21) being connected to the base frame (3); A first hinged rod (22), one end of which is hinged to the base frame (3), and the other end of which is hinged to the top end of the first support column (21); A second hinged rod (23), one end of the second hinged rod (23) being hinged to the base frame (3), the second hinged rod (23) and the first hinged rod (22) being arranged crosswise and hinged at the intersection; a third hinged rod (24), one end of the third hinged rod (24) being hinged to the second hinged rod (23), and the other end of the third hinged rod (24) being hinged to the base frame (3); a fourth hinged rod (25), one end of the fourth hinged rod (25) being hinged to the base frame (3), the fourth hinged rod (25) and the third hinged rod (24) being arranged crosswise and hinged at the intersection; A second support column (26), the bottom end of the second support column (26) is connected to the base frame (3), and the top end of the second support column (26) is hinged to the fourth hinge rod (25).

6. The folding cart according to claim 5, characterized in that: The second connecting part is a detachable main frame rear wheel fixing part. The raised keels on the four sides of the detachable main frame rear wheel fixing part serve to be placed in the iron pipe to stabilize it. A round hole is provided on the outside of the iron pipe, and screws can be used to fix the iron pipe to the internal keel; the square inner hole designed in the center of the main body can better stabilize the wheel frame and prevent it from rotating easily; therefore, the rear wheel adopts a detachable wheel frame with a fixed direction, and the slide in the upper through hole is matched with a buckle to stabilize the loading and unloading of the wheel frame.

7. The folding cart according to claim 1, characterized in that: The base frame is a square aluminum alloy frame.

8. The folding cart according to claim 7, characterized in that: The third connecting member is a detachable center frame fixing member; the detachable center frame fixing member is a detachable structure, including a wheel frame support pipe and a quick release.

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