Large-capacity cart convenient to fold

Abstract

The cart convenient to fold and large in capacity comprises a cart frame, a front wheel assembly and a rear wheel assembly, the cart frame comprises front vertical pipes and rear vertical pipes, a handle assembly and a front cross support are arranged between the two front vertical pipes, a rear cross support is arranged between the two rear vertical pipes, and the front wheel assembly and the rear wheel assembly are arranged on the cart frame. A first side cross support, a second side cross support and a third side cross support are sequentially arranged between the front vertical pipes and the rear vertical pipes on the same side, the frame further comprises a first bottom cross support and a second bottom cross support, and the four ends of the first bottom cross support are connected with the two front vertical pipes and the two third side cross supports respectively. The four ends of the second bottom cross support are connected with the two rear vertical pipes and the two first side cross supports respectively. According to the cart disclosed by the utility model, the bottom cross brackets can be upwards pulled only by upwards lifting the first bottom cross bracket with a hand, so that the front cross bracket, the rear cross bracket and the side cross brackets are driven to be inwards folded, the operation is simple, and the storage space of the folded cart is reduced.

Description

Technical Field

[0001] The utility model relates to the field of carts, in particular to a cart which is easy to fold and has a large capacity. Background Art

[0002] As people's living standards improve, their desire for outdoor activities becomes stronger and stronger, and their requirements for convenience in life become higher and higher. When engaging in outdoor activities, they need to carry some miscellaneous items required for the activities. At this time, foldable carts that are easy to fold and carry come into being.

[0003] The Chinese authorized patent with announcement number CN202222264177.5 discloses a folding cart, a frame, and the frame includes two groups of bracket assemblies arranged at intervals and a connecting rod assembly for connecting the two groups of bracket assemblies, the bracket assembly includes a first cross bar, a second cross bar and two foldable vertical bars, wherein the two ends of one foldable vertical bar are respectively hingedly connected to one end of the first cross bar and one end of the second cross bar, and the two ends of the other foldable vertical bar are respectively hingedly connected to the other end of the first cross bar and the other end of the second cross bar, and the foldable vertical bars have a supporting state and a folding state; the frame has an open state and a storage state, when in the open state, the two foldable vertical bars are both in the supporting state, and when switching from the open state to the storage state, the two foldable vertical bars are simultaneously switched from the supporting state to the folding state, and are folded synchronously by the front and rear brackets, so that other frame components are convenient to cooperate with the folding, and the operation is simple.

[0004] However, the above-mentioned folding cart can only be folded in the length direction, but cannot be folded in the width direction. After folding, it still occupies a certain storage space, and the folding space needs to be improved. In addition, the front and rear distance of the frame is relatively fixed, and the storage capacity is relatively single. Utility Model Content

[0005] The utility model aims to provide a trolley which is easy to fold and has a large capacity, so as to solve the problem in the prior art that the trolley cannot be folded in its width direction, still occupies a certain storage space after folding, and the overall storage space of the trolley is relatively limited.

[0006] In order to solve the above technical problems, the utility model is implemented through the following technical solutions:

[0007] A cart that is easy to fold and has a large capacity, comprises a frame, wherein two groups of front wheel assemblies and two groups of rear wheel assemblies are respectively arranged below the frame, the frame comprises two front vertical tubes and two rear vertical tubes, the front vertical tubes are fixed to the front wheel assemblies, and a handle assembly and a front cross bracket are arranged between the two front vertical tubes, the rear vertical tubes are fixed to the rear wheel assemblies, and a rear cross bracket is arranged between the two rear vertical tubes, a first side cross bracket, a second side cross bracket and a third side cross bracket are arranged in sequence between the front vertical tubes and the rear vertical tubes on the same side, the frame further comprises a first bottom cross bracket and a second bottom cross bracket, the four ends of the first bottom cross bracket are respectively connected to the two front vertical tubes and the two third side cross brackets, the four ends of the second bottom cross bracket are respectively connected to the two rear vertical tubes and the two first side cross brackets, the first bottom cross bracket comprises two straight bottom cross tubes and two curved bottom cross tubes, the second bottom cross bracket comprises four straight bottom cross tubes, and the two curved bottom cross tubes are respectively located below the two straight bottom cross tubes of the second bottom cross bracket.

[0008] Preferably, both ends of the bent bottom cross tube are concave along the middle position, and the concave surface faces the straight bottom cross tube of the second bottom cross bracket, and a distance is formed between the two.

[0009] Preferably, the above also includes a first connecting member, which is provided with a first connecting groove, a second connecting groove and a third connecting groove, the first connecting groove and the second connecting groove are arranged in parallel, and are respectively used to connect the first side cross bracket and the second side cross bracket, or the second side cross bracket and the third side cross bracket, the third connecting groove is arranged at an oblique angle relative to the first connecting groove and the second connecting groove, and is used to connect the first bottom cross bracket or the second bottom cross bracket.

[0010] Preferably, the front vertical tube and the rear vertical tube are both provided with a second connecting member and a sliding connecting member, and the connecting members are correspondingly designed with connecting grooves for connecting the cross brackets at corresponding positions. The second connecting member on the front vertical tube is also provided with a fixed block, and the handle assembly is arranged between the two fixed blocks.

[0011] Preferably, a fixing groove is provided on the above-mentioned fixing block, a stopper is provided on the fixing surface of the fixing groove close to the second connecting member, a rotating member is connected to the fixing groove through an elastic member, and the handle assembly includes a handle rod and two cross rods, one end of the cross rod is connected to the rotating member, and the other end is connected to the U-shaped connecting member at the bottom of the handle rod.

[0012] Preferably, the top ends of the front vertical pipe and the rear vertical pipe are both provided with fixing assemblies, and the fixing assemblies include a first fixing piece and a second fixing piece, the first fixing piece is provided with a connecting hole and is sleeved on the vertical pipe, one end of the second fixing piece is inserted into the connecting hole and is fixed by a third fixing piece, and the other end of the second fixing piece is detachably provided with a fourth fixing piece.

[0013] Preferably, a slot is provided on the fourth fixing member, a support tube is provided between the two fourth fixing members on the front and rear vertical tubes on the same side, and both ends of the support tube are respectively clamped in the slot of the fourth fixing member, and a desktop panel is provided between the two support tubes.

[0014] Preferably, the above-mentioned front cross bracket, rear cross bracket, first side cross bracket and third side cross bracket are all formed by crossing two straight bottom cross tubes of the same structure, and the second side cross bracket includes two cross-arranged bent bottom cross tubes, which are the same as the bent bottom cross tubes of the first bottom cross bracket.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] (1) The cart of the utility model has a simple structure. Through the first bottom cross bracket and the second bottom cross bracket, and the connection design between them and the side cross bracket, the bottom cross bracket can be pulled up by hand by pulling up the first bottom cross bracket, thereby driving the front, rear and side cross brackets to fold inward, realizing the folding of the frame in four directions: front, rear, left and right. The operation is simple, and the storage space of the cart after folding is further reduced, which is convenient for carrying and transportation.

[0017] (2) The side of the utility model is connected by three side cross brackets, which omits the design of many support rods on the side brackets in the existing carts, saving manufacturing costs. At the same time, according to needs, multiple cross brackets can be designed in sequence to expand the capacity of the cart. In addition, the height of the side of this design is significantly lower than the height of the vertical pipe, which is low in cost and only requires the installation of fixed fabrics to form a loading space. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model in the expanded state;

[0019] Figure 2 It is a schematic diagram of the structure of the first connecting member, the second side cross, the third side cross and the fourth side cross bracket in the utility model;

[0020] Figure 3 This is a schematic diagram of the structure between the front vertical pipe, the fixing assembly and the support pipe in the utility model;

[0021] Figure 4It is a schematic diagram of the structure between the second connecting member and the fixing member in the utility model;

[0022] Figure 5 This is a diagram of the folding process of the utility model after hiding one side cross bracket (1);

[0023] Figure 6 This is a diagram of the folding process of the utility model after hiding one side cross bracket (2);

[0024] Figure 7 This is a diagram of the folding process of the utility model after hiding one side cross bracket (3);

[0025] Figure 8 It is a schematic diagram of the structure of the utility model in a completely folded state.

[0026] In the figure: 1-front vertical tube; 2-rear vertical tube; 3-front cross bracket; 4-rear cross bracket; 5-first side cross bracket; 6-second side cross bracket; 7-third side cross bracket; 8-first bottom cross bracket; 9-second bottom cross bracket; 10-straight bottom cross tube; 11-curved bottom cross tube; 12-first connecting member; 13-second connecting member; 14-sliding connecting member; 15-fixed block; 16-stop block; 17-elastic member; 18-rotating member; 19-handle rod; 20-cross bar; 21-U-shaped connecting member; 22-first fixing member; 23-second fixing member; 24-third fixing member; 25-fourth fixing member; 26-support tube; 27-desktop panel; 1201-first connecting slot; 1202-second connecting slot; 1203-third connecting slot; 2501-card slot. DETAILED DESCRIPTION

[0027] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] like Figure 1-5As shown, a trolley that is easy to fold and has a large capacity includes a frame, two groups of front wheel assemblies and two groups of rear wheel assemblies are respectively arranged below the frame, the frame includes two front vertical tubes 1 and two rear vertical tubes 2, the front vertical tube 1 is fixed to the front wheel assembly, and a handle assembly and a front cross bracket 3 are arranged between the two front vertical tubes 1, the rear vertical tube 2 is fixed to the rear wheel assembly, and a rear cross bracket 4 is arranged between the two rear vertical tubes 2, and a first side cross bracket 5, a second side cross bracket 6 and a third side cross bracket are arranged in sequence between the front vertical tube 1 and the rear vertical tube 2 on the same side. 7, the frame also includes a first bottom cross bracket 8 and a second bottom cross bracket 9, the four ends of the first bottom cross bracket 8 are respectively connected to the two front vertical tubes 1 and the two third side cross brackets 7, the four ends of the second bottom cross bracket 9 are respectively connected to the two rear vertical tubes 2 and the two first side cross brackets 5, the first bottom cross bracket 8 includes two straight bottom cross tubes 10 and two curved bottom cross tubes 11, the second bottom cross bracket 9 includes four straight bottom cross tubes 10, and the two curved bottom cross tubes 11 are respectively located below the two straight bottom cross tubes 10 of the second bottom cross bracket 9.

[0029] The cart of the utility model has a simple structure. Through the first bottom cross bracket 8 and the second bottom cross bracket 9, and the connection design between them and the side cross brackets, the bottom cross bracket can be pulled up by pulling up the first bottom cross bracket 8, thereby driving the front, rear and side cross brackets to fold inward, realizing the folding of the frame in four directions: front, rear, left and right. The operation is simple, and the storage space of the cart after folding is further reduced, which is convenient for carrying and transportation. The side is connected by three side cross brackets, and many designs of support rods on the side brackets in the existing carts are omitted, saving manufacturing costs. At the same time, according to needs, multiple cross brackets can be designed in sequence to expand the capacity of the cart. In addition, the side height of this design is obviously lower than the height of the vertical pipe, which is low in cost, and only the fixed fabric needs to be installed to form a loading space.

[0030] Specifically, both ends of the curved bottom cross tube 11 are concave along the middle position, and the concave surface faces the straight bottom cross tube 10 of the second bottom cross bracket 9, and a gap is formed between the two. The above design allows the curved bottom cross tube 11 to better drive the straight bottom cross tube 10 when the first bottom cross bracket 9 is pulled to fold the cart, thereby improving the storage effect. At the same time, the position design of the two bottom cross brackets can also strengthen the bottom load-bearing condition of the frame and improve the stability of the cart.

[0031] Specifically, it also includes a first connecting member 12, on which a first connecting groove 1201, a second connecting groove 1202 and a third connecting groove 1203 are arranged, the first connecting groove 1201 and the second connecting groove 1202 are arranged in parallel, and are respectively used to connect the first side cross bracket 5 and the second side cross bracket 6, or the second side cross bracket 6 and the third side cross bracket 7, and the third connecting groove 1203 is arranged at an oblique angle relative to the first connecting groove 1201 and the second connecting groove 1202, and is used to connect the first bottom cross bracket 8 or the second bottom cross bracket 9. The above design, through the first connecting member 12 and its structural arrangement, can more stably connect the side cross bracket and the bottom cross bracket, making the unfolding and folding of the cart more convenient and smooth.

[0032] Specifically, the front vertical tube 1 and the rear vertical tube 2 are both provided with a second connector 13 and a sliding connector 14, and the connectors are correspondingly designed with connecting grooves for connecting the cross brackets at corresponding positions. The second connector 13 on the front vertical tube 1 is also provided with a fixing block 15, and the handle assembly is arranged between the two fixing blocks 15. The above design has a simple structure, and the second connector 13 and the sliding connector 14 of the same structure are arranged on the front and rear vertical tubes, which is convenient for the processing of accessories and has strong versatility. The design of the fixing block 15 is for more stable installation and use of the handle assembly.

[0033] Specifically, a fixing groove is provided on the fixing block 15, a stopper 16 is provided on the fixing surface of the fixing groove close to the second connecting member, a rotating member 18 is connected to the fixing groove through an elastic member 17, and the handle assembly includes a handle bar 19 and two cross bars 20, one end of the cross bar 20 is connected to the rotating member 18, and the other end is connected to the U-shaped connecting member 21 at the bottom of the handle bar 19. The above design allows the handle bar 19 to work elastically relative to the frame, so that the handle bar 19 can be in a stable use state, and the design of the stopper 16 can prevent the handle bar from falling off the ground, thereby improving the safety of use.

[0034] Specifically, the top ends of the front vertical tube 1 and the rear vertical tube 2 are both provided with fixing components, which include a first fixing member 22 and a second fixing member 23. The first fixing member 22 is provided with a connection hole and is sleeved on the vertical tube. One end of the second fixing member 23 is inserted into the connection hole and fixed by the third fixing member 24. The other end of the second fixing member is detachably provided with a fourth fixing member 25. The above design is for fixing the fabric, specifically, the first fixing member 22 is first placed at the corresponding installation position of the fabric, and then the second fixing member 23 is screwed into the connection hole of the first fixing member 22, and then the third fixing member 24 is installed at the screwed-in end. Finally, the first fixing member 22 is sleeved and fixed on the vertical tube to complete the installation of the fabric on the frame.

[0035] Furthermore, the first fixing member 22 may be a square connecting member, the second fixing member 23 may be a bolt, and the third fixing member 24 may be a nut, which is convenient to obtain and easy to install.

[0036] Specifically, a slot 2501 is provided on the fourth fixing member 25, a support tube 26 is provided between the two fourth fixing members 25 on the front and rear vertical pipes on the same side, and both ends of the support tube 26 are respectively clamped in the slot 2501 of the fourth fixing member 25, and a tabletop 27 is provided between the two support tubes 26. According to the above design, by installing the fourth fixing member 25, a tabletop 27 can be provided on the cart, so that the cart can be used as an outdoor table, thereby improving the use range and effectiveness of the cart, and when the tabletop 27 is not needed, the second fixing member 25 can be removed and stored, thereby improving the service life of the fourth fixing member 25.

[0037] Specifically, the front cross bracket 3, the rear cross bracket 4, the first side cross bracket 5 and the third side cross bracket 7 are all formed by crossing two straight bottom cross tubes 10 of the same structure, and the second side cross bracket 6 includes two cross-arranged curved bottom cross tubes 11, which are the same as the curved bottom cross tubes 11 of the first bottom cross bracket 8. The above design uses the straight bottom cross tubes 10 and the curved bottom cross tubes 11 of the same structure, which is easy to process and has strong universality of accessories.

[0038] The above are only preferred embodiments of the present invention, and do not limit the implementation mode and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A trolley that is easy to fold and has a large capacity, comprising a frame, two groups of front wheel assemblies and two groups of rear wheel assemblies are respectively arranged below the frame, the frame comprises two front vertical tubes and two rear vertical tubes, the front vertical tubes are fixed to the front wheel assemblies, and a handle assembly and a front cross bracket are arranged between the two front vertical tubes, the rear vertical tubes are fixed to the rear wheel assemblies, and a rear cross bracket is arranged between the two rear vertical tubes, characterized in that: A first side cross bracket, a second side cross bracket and a third side cross bracket are sequentially arranged between the front vertical tube and the rear vertical tube on the same side, and the frame also includes a first bottom cross bracket and a second bottom cross bracket, the four ends of the first bottom cross bracket are respectively connected to the two front vertical tubes and the two third side cross brackets, the four ends of the second bottom cross bracket are respectively connected to the two rear vertical tubes and the two first side cross brackets, the first bottom cross bracket includes two straight bottom cross tubes and two curved bottom cross tubes, the second bottom cross bracket includes four straight bottom cross tubes, and two of the curved bottom cross tubes are respectively located below the two straight bottom cross tubes of the second bottom cross bracket.

2. The foldable and large-capacity cart according to claim 1, characterized in that: Both ends of the bent bottom cross tube are concave along the middle position, and the concave surface faces the straight bottom cross tube of the second bottom cross bracket, and a distance is formed between the two.

3. The foldable and large-capacity cart according to claim 1, characterized in that: It also includes a first connecting member, which is provided with a first connecting groove, a second connecting groove and a third connecting groove. The first connecting groove and the second connecting groove are arranged in parallel, and are respectively used to connect the first side cross bracket and the second side cross bracket, or the second side cross bracket and the third side cross bracket. The third connecting groove is arranged at an oblique angle relative to the first connecting groove and the second connecting groove, and is used to connect the first bottom cross bracket or the second bottom cross bracket.

4. The foldable and large-capacity cart according to claim 1, characterized in that: The front vertical tube and the rear vertical tube are both provided with a second connecting member and a sliding connecting member, and the connecting members are correspondingly designed with connecting grooves for connecting the cross brackets at corresponding positions. The second connecting member on the front vertical tube is also provided with a fixing block, and the handle assembly is arranged between the two fixing blocks.

5. The foldable and large-capacity cart according to claim 4, characterized in that: A fixing groove is provided on the fixing block, a stopper is provided on the fixing surface of the fixing groove close to the second connecting member, a rotating member is connected to the fixing groove through an elastic member, and the handle assembly includes a handle rod and two cross bars, one end of the cross bar is connected to the rotating member, and the other end is connected to the U-shaped connecting member at the bottom of the handle rod.

6. A foldable and large-capacity cart according to any one of claims 1 to 5, characterized in that: The top ends of the front vertical pipe and the rear vertical pipe are both provided with a fixing assembly, and the fixing assembly includes a first fixing piece and a second fixing piece. The first fixing piece is provided with a connecting hole and is sleeved on the vertical pipe. One end of the second fixing piece is inserted into the connecting hole and is fixed by a third fixing piece. The other end of the second fixing piece is detachably provided with a fourth fixing piece.

7. The foldable and large-capacity cart according to claim 6, characterized in that: The fourth fixing member is provided with a slot, a support tube is provided between the two fourth fixing members on the front and rear vertical tubes on the same side, and both ends of the support tube are respectively clamped in the slot of the fourth fixing member, and a desktop panel is provided between the two support tubes.

8. The foldable and large-capacity cart according to claim 7, characterized in that: The front cross bracket, the rear cross bracket, the first side cross bracket and the third side cross bracket are all formed by crossing two straight bottom cross tubes of the same structure. The second side cross bracket includes two cross-arranged bent bottom cross tubes, which are the same as the bent bottom cross tubes of the first bottom cross bracket.

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