Foldable cart

Abstract

The utility model relates to the technical field of trolleys, in particular to a foldable trolley which comprises a trolley frame, wheels and a cloth cover, first hinge assemblies are arranged at the four corners of the trolley frame, and each first hinge assembly comprises a first upper hinge seat, a first lower hinge seat and a first vertical rod; the first hinge assemblies are connected through first hinge assemblies. A second hinge assembly is arranged between the first hinge assemblies, the second hinge assembly comprises a second upper hinge seat, a second lower hinge seat and a second vertical rod, and the first hinge assemblies and the second hinge assembly are connected through second hinge assemblies; a force application hinge seat and a force application hinge rod are arranged at the center of the first lower hinge seat and the center of the second lower hinge seat, the cloth sleeve is provided with a pull rope, the pull rope is located on the inner wall of the bottom of the cloth sleeve, and the outer wall of the bottom of the cloth sleeve is connected with the force application hinge seat through a bandage. The folding trolley has the advantages that the time spent on folding the trolley by a user is shorter, and labor is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of trolleys, in particular to a foldable trolley. Background Art

[0002] A cart is a vehicle that can carry a certain amount of items and is widely used in shopping, travel, outdoor leisure and other scenarios. Existing carts are generally fixed and cannot be folded, making them inconvenient to use.

[0003] For example, the Chinese patent application number 202420097323.6 discloses a folding frame and a trolley using the same. This patent discloses that when the folding trolley is used and needs to be stored, first, the box body is removed and the box body is stored separately. Then, the bottom frame assembly needs to be disassembled. Next, the first vertical frame assembly and the second vertical frame assembly are gathered together. Since the connection between the first vertical frame assembly and the second vertical frame assembly is respectively provided with a first connecting member and a second connecting member, the first vertical frame assembly and the second vertical frame assembly can be gathered together, and due to the presence of the telescopic assembly, gathering the first vertical frame assembly and the second vertical frame assembly will not increase the overall height of the folding frame. Finally, the first vertical frame assembly and the second vertical frame assembly are stored as one piece, and the bottom frame assembly is stored separately.

[0004] When folding the trolley of the above patent, the box body must be removed first, the bottom frame assembly must be disassembled, and then the first and second stand assemblies must be assembled. The steps are relatively complicated and the user spends more time and effort in disassembly. Summary of the Invention

[0005] In order to solve the deficiencies in the prior art, a trolley is provided which allows a user to fold the trolley in a shorter time and with less effort.

[0006] 1. The utility model is implemented by the following technical solution: a foldable handcart, comprising a rectangular frame, four wheels located below the frame, and a cloth cover fixed to the frame, wherein a first hinge assembly is provided at each corner of the frame, the first hinge assembly comprising a first upright and a first upper hinge seat and a first lower hinge seat fixed to the first upright; the first hinge assemblies along the width direction of the frame are connected by a first hinge assembly in an X shape; a second hinge assembly is provided between the first hinge assemblies along the length direction of the frame, the second hinge assembly comprising a second upright and a second upper hinge seat and a second lower hinge seat fixed to the second upright, and the first hinge assembly and the second hinge assembly along the length direction of the frame are connected by a second hinge assembly in an X shape;

[0007] A force-applying hinge seat is provided at the center between the first lower hinge seat and the second lower hinge seat, and the force-applying hinge seat is hingedly connected to the first lower hinge seat and the second lower hinge seat via four force-applying hinge rods arranged in an X shape; the cloth cover is provided with a pull rope extending along the length direction of the frame between the two force-applying hinge seats, the pull rope is located on the bottom inner wall of the cloth cover, and the bottom outer wall of the cloth cover is connected to the force-applying hinge seat via a binding strap;

[0008] When the pull rope is pulled upward, the force-applying hinge seat gathers upward to drive the first hinge assembly and the second hinge assembly to gather inward.

[0009] During use, the user can directly pull the drawstring on the bottom inner wall of the cloth cover, so that the cloth cover is stretched and pulled to gather upward, and the cloth cover drives the two force-applying hinge seats to gather upward. Since the first lower hinge seat and the second lower hinge seat are both hingedly connected to the force-applying hinge seat through the force-applying hinge rod, the first hinge assembly and the second hinge assembly will also move toward the side of the upward force-applying hinge seat and gather inward and upward, thereby realizing the folding of the entire trolley.

[0010] The first hinge assembly and the second hinge assembly may both adopt any existing hinge structure used for folding strollers.

[0011] The cloth cover is opened upwards so that items can be placed in the cart.

[0012] The first lower hinge seat and the second lower hinge seat are in a rectangular shape, so the center is the center of the rectangle.

[0013] Wherein, the first upper hinge seat is located above the first lower hinge seat, and the second upper hinge seat is located above the second lower hinge seat.

[0014] In this solution, the force-applying hinge seat and the cloth cover are connected together by a strap, and a pull rope is provided at the same time, and the pull rope is provided between the two hinge seats accordingly, so that the pull rope can be pulled up more arbitrarily to realize the upward gathering of the force-applying hinge seat, and the user can realize the folding of the entire trolley more labor-saving.

[0015] Preferably, the two second lower articulated seats are connected by a third articulated assembly, and the third articulated assembly includes two third articulated rods and an articulated member located between the two third articulated rods, and the two ends of the third articulated rod are respectively connected to the second lower articulated seat and the articulated member.

[0016] By connecting the two second lower hinge seats through the third hinge assembly, the second hinge assembly is made more stable, and at the same time, the synchronization of the second hinge assembly when the cart is gathered is improved, so that the cart is smoother and more fluent when gathered, avoiding jamming.

[0017] Preferably, the height of the hinged end between the third hinged rod and the second lower hinged seat is lower than the height of the hinged end between the force-applying hinged rod and the second lower hinged seat.

[0018] Since the third hinge assembly will also gather upward when the cart is gathered, the height of the hinge end of the second lower hinge seat and the third hinge rod is lower than the height of the hinge end of the force-applying hinge rod and the second hinge seat, so that the height of the hinge part of the third hinge assembly will not be too high after gathering, thereby having a avoidance effect on the cloth cover after folding, freeing up more space for the cloth cover above to gather, thereby ensuring a better gathering degree of the entire cart.

[0019] Preferably, a connecting sleeve extending in an up-down direction is provided on the side wall of the cloth sleeve, and the connecting sleeve is sleeved on the first vertical pole and the second vertical pole.

[0020] The connecting sleeve is arranged on the first upright pole and the second upright pole, and the first upright pole and the second upright pole are fixed in the up and down directions. Therefore, when the cloth sleeve is gathered, the connecting sleeve can adaptively slide up and down on the first upright pole and the second upright pole, making it smoother when gathered and folded.

[0021] Preferably, both ends of the pull rope are located above the force-applying hinge seat.

[0022] The two ends of the pull rope correspond to the upper part of the force-applying hinge seat, so that the force can be transmitted to the force-applying hinge seat more directly, making it easier to gather the cart.

[0023] Preferably, the first hinge assembly and the second hinge assembly each include two short rods and two long rods hingedly connected in an X shape, the lower ends of the long rods are hingedly connected to the first lower hinge seat or the second lower hinge seat, the upper ends of the long rods are hingedly connected to one end of the short rods, and the other ends of the short rods are hingedly connected to the first upper hinge seat or the second upper hinge seat.

[0024] By hingedly connecting the long and short rods, with the other end of the short rod hingedly connected to the first or second upper hinged seat, the short and long rods adaptively converge without raising or lowering the first and second uprights when the pushchairs are brought together. The lower ends of the long rods along the width of the frame are connected to the two first lower hinged seats, while the lower ends of the long rods along the length of the frame are connected to the first and second lower hinged seats. The same applies to the short rods.

[0025] Preferably, the first upper hinge seat is fixed at the middle position of the first vertical pole, and the second upper hinge seat is fixed at the middle position of the second vertical pole.

[0026] After the cart is folded, the short rod and the long rod will also be folded and protrude upward. By fixing the first upper hinge seat at the middle position of the first vertical pole and the second upper hinge seat at the middle position of the second vertical pole, the height of the short rod and the long rod after folding can be reduced, so that the short rod and the long rod will not protrude above the entire cart, thereby reducing the volume of the entire cart and facilitating the placement of the cart.

[0027] Preferably, two pull rods are hingedly connected to the first lower hinge seat on the front side of the frame, and the two pull rods are commonly connected to a fixing sleeve, and a handle is provided on the fixing sleeve.

[0028] The trolley can be easily pulled by the handle.

[0029] Preferably, a reinforcing rod extending in the up-down direction is provided between the short rod and the other long rod on the front side of the frame, and both ends of the reinforcing rod are hingedly connected to the short rod and the long rod respectively.

[0030] Since there is a handle on the front side of the frame, it will often be dragged as a force point, so the strength of the front side of the frame can be enhanced by setting a reinforcement rod. At the same time, both ends of the reinforcement rod are hinged so that it can adaptively fold together with the frame.

[0031] Preferably, the handle includes a lifting rod extending vertically, the lifting rod is passed through the fixing sleeve and slidingly cooperates with the fixing sleeve, an elastically retractable protrusion extends from the side wall of the lifting rod, and the fixing sleeve is provided with a through hole for clamping the protrusion, and the fixing sleeve is provided with a button at the other end of the through hole. When the button is pressed, the button will extend into the through hole to push the protrusion out of the through hole.

[0032] When the buckle of the handle's lifting rod is engaged with the fixed sleeve, the handle is in its longest position, making it easier for the user to pull the stroller. When the stroller needs to be folded, the buckle is disengaged from the through hole by pressing a button, thereby lowering the lifting rod and retracting the handle to reduce the size of the entire stroller. The elastically retractable protrusion can be any existing tube-type buckle connection component, such as a flat spring, a spring, or a torsion spring.

[0033] Compared with the prior art, the utility model has the advantage of being easier for users to fold the trolley. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the structure of the utility model;

[0035] Figure 2 This is a bottom view of the bottom of the cart;

[0036] Figure 3 This is a top view of the top of the cart;

[0037] Figure 4 This is a schematic diagram of the structure of the stroller frame after removing the cloth cover;

[0038] Figure 5 This is a schematic diagram of the structure of the stroller frame after removing the cloth cover;

[0039] Figure 6 Schematic diagram of the structure of the handle;

[0040] Figure 7 It is a cross-sectional view of the fixed sleeve;

[0041] Figure 8 It is a structural diagram of the cart in a semi-folded state;

[0042] Figure 9 It is a structural diagram of the cart in the folded state;

[0043] Figure 10 for Figure 2 A partial enlarged view of the bottom of the frame.

[0044] Figure numbers: 1. cloth cover; 11. connecting sleeve; 12. pull rope; 13. strap; 2. first articulated assembly; 21. first lower articulated seat; 22. first vertical pole; 23. first upper articulated seat; 3. second articulated assembly; 31. second lower articulated seat; 32. second vertical pole; 33. second upper articulated seat; 4. wheel; 5. handle; 51. pull rod; 52. lifting rod; 53. fixing sleeve; 54. button; 55. protrusion; 551. leaf spring; 56. through hole; 6. first articulated assembly; 61. long rod; 62. short rod; 63. reinforcing rod; 7. second articulated assembly; 8. force-applying articulated seat; 81. force-applying articulated rod; 9. third articulated assembly; 91. third articulated rod; 92. articulated part. DETAILED DESCRIPTION

[0045] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0046] like Figures 1 to 5As shown, this embodiment discloses a foldable cart, comprising a rectangular and foldable frame and a cloth cover 1 fixed to the frame. The shape of the cloth cover 1 is adapted to the shape of the frame and both are rectangular and open upward. The frame comprises a base frame and a side frame, and wheels 4 are provided below the four corners of the base frame. The wheels 4 are provided with any existing locking structure that can lock the wheels and prevent them from moving. A first articulated assembly 2 is provided above the wheels 4, and the first articulated assembly 2 comprises, from bottom to top, a first lower articulated seat 21, a first vertical rod 22 and a first upper articulated seat 23. The first lower articulated seat 21 is fixed to the lower end of the first vertical rod 22, and the first upper articulated seat 23 is fixed to the middle of the first vertical rod 22. The two adjacent first hinge assemblies 2 along the width direction of the frame are connected by a first hinge component 6. The first hinge component 6 includes two long rods 61 and two short rods 62. The two long rods 61 are hingedly connected in an X shape. The lower ends of the long rods 61 are hingedly connected to the first lower hinge seats 21 on the left and right sides. The upper ends of the long rods 61 are hingedly connected to the short rods 62. The other ends of the short rods 62 are respectively hingedly connected to the first upper hinge seats 23 on the left and right sides.

[0047] A second hinge assembly 3 is provided between the two first hinge assemblies 2 along the length of the frame. The second hinge assembly 3 comprises a second upper hinge seat 33, a second lower hinge seat 31, and a second upright 32. The second lower hinge seat 31 is fixed to the lower end of the second upright 32, while the second upper hinge seat 33 is fixed to the middle of the second upright 32. The second upright 32 is arranged at the same height as the first upright 22. The first and second hinge assemblies 2 and 3 are connected along the length of the frame by an X-shaped second hinge assembly 7. Like the first hinge assembly 6, the second hinge assembly 7 also comprises two long rods 61 and two short rods 62. The two long rods 61 are articulated in an X-shape. The lower ends of the long rods 61 are hingedly connected to the first lower hinge seat 21 and the second lower hinge seat 31, respectively. The upper ends of the long rods are hingedly connected to the short rod 62, whose other ends are articulatedly connected to the first upper hinge seat 23 and the second upper hinge seat 33, respectively.

[0048] The second upper hinge seat 33 is located between the two first upper hinge seats 23 along the length of the frame, and the second lower hinge seat 31 is located between the two first lower hinge seats 21 along the length of the frame. A connecting sleeve 11 is provided on the side wall of the cloth cover 1, and the connecting sleeve 11 is sleeved on the first upright 22 and the second upright 22.

[0049] like Figures 2 to 5 and Figure 10As shown, a force-applying articulated seat 8 is provided at the center between the two first lower articulated seats 21 and the two second lower articulated seats 31. The force-applying articulated seat 8 is hingedly connected to the first lower articulated seat 21 and the second lower articulated seat 31 through four force-applying articulated rods 81 arranged in an X shape; the cloth cover 1 is provided with a pull rope 12 extending along the length direction of the frame between the two force-applying articulated seats 8. The pull rope 12 is located on the bottom inner wall of the cloth cover 1, and both ends of the pull rope 12 are located above the force-applying articulated seat 8. The bottom outer wall of the cloth cover 1 and the force-applying articulated seat 8 are connected by a strap 13.

[0050] like Figure 2 、 Figure 4 and Figure 5 As shown, the two second lower articulated seats 31 are connected by a third articulated assembly 9. The third articulated assembly 9 includes two third articulated rods 91 and an articulated component 92 located between the two third articulated rods 91. The two ends of the third articulated rod 91 are respectively articulatedly connected to the second lower articulated seats 31 and the articulated component 92.

[0051] The height of the hinged end between the third hinge rod 91 and the second lower hinge seat 31 is lower than the height of the hinged end between the force applying hinge rod 81 and the second lower hinge seat 31 .

[0052] like Figures 1 to 3 As shown, the edge of the opening of the cloth cover is fixed to the first upper hinge seat 23 and the second upper hinge seat 33 by screws.

[0053] like Figure 1 、 Figures 5 to 7 As shown, two pull rods 51 are hingedly connected to the first lower hinge seat 21 on the front side of the frame. The two pull rods 51 can swing along the front-to-back direction (lengthwise direction) of the frame. The two pull rods 51 are commonly connected to a fixed sleeve 53, to which a lifting rod 52 is slidably connected. The lifting rod 52 extends in the vertical direction and has a handle 5 fixed at its upper end. The lifting rod 52 is provided with a leaf spring 551, which drives the protrusion 55 to elastically extend to the side wall of the lifting rod 52. The fixed sleeve 53 is provided with a through hole 56 for engaging the protrusion 55. The fixed sleeve 53 is provided with a button 54 at the other end of the through hole 56. The button 54 is a deformable plastic component. When the button 54 is pressed, it extends into the through hole 56 and pushes the protrusion 55 out of the through hole 56.

[0054] A reinforcing rod 63 is further provided on the first hinge assembly 6 on the front side of the frame. The reinforcing rod 63 extends in the up-down direction, and both ends of the reinforcing rod 63 are hingedly connected to the short rod 62 and the long rod 61 respectively.

[0055] like Figure 1 、 Figure 8 and Figure 9As shown, when the stroller of this embodiment needs to be folded, the user directly pulls the drawstring 12 on the fabric cover 1. The fabric cover 1, via the straps 13, pulls the two force-applying hinges 8 below upward. The force-applying hinges 8 then pull the surrounding first and second lower hinges 21, 31 inward, bringing the first and second hinge assemblies 2, 3 together, folding the entire stroller. The user then presses the button 54, lowering the lifting rod 52 and pushing the pull rod 51 toward the frame.

Claims

1. A foldable stroller, characterized by: The vehicle comprises a rectangular frame, four wheels located below the frame, and a cloth cover fixed to the frame. The four corners of the frame are provided with a first hinge assembly, the first hinge assembly comprises a first vertical rod and a first upper hinge seat and a first lower hinge seat fixed on the first vertical rod; the first hinge assemblies along the width direction of the frame are connected by a first hinge component in an X shape; a second hinge assembly is provided between the first hinge assemblies along the length direction of the frame, the second hinge assembly comprises a second vertical rod and a second upper hinge seat and a second lower hinge seat fixed on the second vertical rod. The hinge seat is provided with a first hinge assembly and a second hinge assembly along the length direction of the frame, connected by a second hinge assembly in an X shape; a force-applying hinge seat is provided at the center between the first lower hinge seat and the second lower hinge seat, and the force-applying hinge seat is hingedly connected to the first lower hinge seat and the second lower hinge seat through four force-applying hinge rods arranged in an X shape; the cloth cover is provided with a pull rope extending along the length direction of the frame between the two force-applying hinge seats, the pull rope is located on the bottom inner wall of the cloth cover, and the bottom outer wall of the cloth cover is connected to the force-applying hinge seat by a strap; When the pull rope is pulled upward, the force-applying hinge seat gathers upward to drive the first hinge assembly and the second hinge assembly to gather inward.

2. The foldable stroller according to claim 1, wherein: The two second lower hinge seats are connected via a third hinge assembly, which includes two third hinge rods and a hinge member located between the two third hinge rods, and two ends of the third hinge rod are respectively connected to the second lower hinge seat and the hinge member.

3. The foldable stroller according to claim 2, wherein: The height of the hinged end between the third hinged rod and the second lower hinged seat is lower than the height of the hinged end between the force-applying hinged rod and the second lower hinged seat.

4. The foldable stroller according to claim 1, wherein: A connecting sleeve extending in an up-down direction is provided on the side wall of the cloth sleeve, and the connecting sleeve is sleeved on the first vertical pole and the second vertical pole.

5. The foldable stroller according to claim 1, wherein: The first hinge assembly and the second hinge assembly each include two short rods and two long rods hingedly connected in an X shape, the lower ends of the long rods are hingedly connected to the first lower hinge seat or the second lower hinge seat, the upper ends of the long rods are hingedly connected to one end of the short rods, and the other ends of the short rods are hingedly connected to the first upper hinge seat or the second upper hinge seat.

6. The foldable stroller according to any one of claims 1 to 5, characterized in that: The first upper hinge seat is fixed at the middle position of the first vertical pole, and the second upper hinge seat is fixed at the middle position of the second vertical pole.

7. The foldable stroller according to claim 1, wherein: Two pull rods are hingedly connected to the first lower hinge seat on the front side of the frame. The two pull rods are commonly connected to a fixing sleeve, and a handle is provided on the fixing sleeve.

8. The foldable stroller according to claim 7, wherein: A reinforcing rod is provided between the short rod on the front side of the frame and the other long rod, and two ends of the reinforcing rod are respectively hingedly connected to the short rod and the other long rod.

9. The foldable stroller according to claim 7, wherein: The handle includes a lifting rod extending vertically, the lifting rod is inserted into the fixing sleeve and slidably cooperates with the fixing sleeve, an elastically retractable protrusion extends from the side wall of the lifting rod, and the fixing sleeve is provided with a through hole for clamping the protrusion. The fixing sleeve is provided with a button at the other end of the through hole. When the button is pressed, the button will extend into the through hole to push the protrusion out of the through hole.

10. The foldable stroller according to claim 7, wherein: Both ends of the pull rope are located above the force-applying hinge seat.

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