CN219565136U

CN219565136U - Folding cart

Info

Publication number: CN219565136U
Application number: CN202320359515.5U
Authority: CN
Inventors: 何佳益
Original assignee: Cixi Mujixiong Outdoor Products Co ltd
Current assignee: Cixi Mujixiong Outdoor Products Co ltd
Priority date: 2023-03-02
Filing date: 2023-03-02
Publication date: 2023-08-22
Anticipated expiration: 2033-03-02

Abstract

The utility model relates to a folding cart which comprises a first side expansion bracket, a second side expansion bracket, a front end expansion bracket, a rear end expansion bracket, a front end hinging assembly, a handle assembly, a rear end hinging assembly, a bottom expansion bracket and a moving assembly, wherein the first side expansion bracket and the second side expansion bracket respectively comprise a first group of N-shaped expansion brackets and a second group of N-shaped expansion brackets which are mutually hinged in a sliding manner.

Description

Folding cart

Technical Field

The utility model relates to the technical field of carts, in particular to a folding cart.

Background

When the goods are carried, the cart is required to be used for carrying and transporting, and the floor space is large in the storage and carrying processes, so that the use is inconvenient. In addition, some telescopic trucks are available, and the floor area of the truck is smaller when the truck is not in use by utilizing a telescopic structure, but the floor board is generally fixed and not telescopic, and the height of the truck is compressed and changed in a stowing state, but the width of the truck is still unchanged, so that the transverse floor area is larger when the truck is horizontally placed.

The folding trolley is characterized in that the front support, the rear support, the handle, the left support, the right support and the bottom support are connected in a split mode, so that the front support, the rear support and the handle cannot be integrally linked when the trolley is integrally folded, the front support, the rear support and the handle are required to be folded first and then the left support, the right support and the bottom are required to be folded, and when the trolley is folded, the front support, the rear support, the handle, the left support and the right support are required to be pushed by two hands for multiple times to be formed.

Disclosure of Invention

The utility model aims to provide a folding cart which is characterized in that the handle controls the whole body to fold and unfold in a linked manner, the whole body folding and unfolding operation is simple and convenient, and the whole body is stable after folding and unfolding.

In order to solve the technical problems, the utility model is solved by the following technical scheme:

the utility model provides a folding shallow, includes first side expansion bracket, second side expansion bracket, front end expansion bracket and rear end expansion bracket, all be connected through front end hinge subassembly between front end and the front end expansion bracket of first side expansion bracket and between the front end and the front end expansion bracket of second side expansion bracket, front end hinge subassembly's front end has handle subassembly, all be connected through rear end hinge subassembly between the rear end and the rear end expansion bracket of first side expansion bracket and between the rear end and the rear end expansion bracket of second side expansion bracket, the lower part hinge between front end hinge subassembly and the rear end hinge subassembly has the bottom expansion bracket, front end hinge subassembly and rear end hinge subassembly's bottom can be dismantled and be connected with the removal subassembly, first side expansion bracket and second side expansion bracket all include first set of N shape expansion bracket pole and second set of N shape expansion bracket pole, first set of N shape expansion bracket pole and second set of N shape expansion bracket pole each other slip articulates.

Preferably, the front end hinge assembly comprises a front end supporting rod, the upper portion of the front end supporting rod is connected with a front end upper hinge block, the front end upper hinge block is provided with a first upper opening groove and a first lower opening groove, the lower portion of the front end supporting rod is connected with a front end lower hinge block, the rear end of the front end lower hinge block is provided with a first front end connecting groove, a second front end connecting groove and a third front end connecting groove, and the front end lower hinge block is provided with a handle connecting groove.

Further preferably, the rear end hinge assembly comprises a rear end supporting rod, the upper portion of the rear end supporting rod is connected with a rear end upper hinge block, the rear end upper hinge block is provided with a second upper opening groove and a second lower opening groove, the lower portion of the rear end supporting rod is connected with a rear end lower hinge block, and the front end of the rear end lower hinge block is provided with a first rear end connecting groove, a second rear end connecting groove and a third rear end connecting groove.

Further preferably, the first group of N-shaped expansion frame rods comprises a first frame rod, a second frame rod and a third frame rod, the first frame rod is hinged to the first lower opening groove, the third frame rod is hinged to the third rear end connecting groove, the second group of N-shaped expansion frame rods comprises a fourth frame rod, a fifth frame rod and a sixth frame rod, the fourth frame rod is hinged to the second lower opening groove, the sixth frame rod is hinged to the third front end connecting groove, all the first frame rod, the second frame rod, the third frame rod, the fourth frame rod, the fifth frame rod and the fifth frame rod are hinged to each other through a hinge plate, the first frame rod middle is hinged to the sixth frame rod middle, the second frame rod middle is hinged to the fifth frame rod middle, the third frame rod middle is hinged to the fourth frame rod middle, long round grooves are formed in the second frame rod middle and the fifth frame rod middle, the first frame rod is connected to a hinge plate connecting the fifth frame rod and the sixth frame rod through a first side, and the second frame rod and the third frame rod are connected to each other through a hinge plate.

Further preferably, the front end expansion bracket comprises a first front end expansion bracket group and a second front end expansion bracket group, the first front end expansion bracket group comprises a first front end lower hack lever and a second front end lower hack lever, one end of the first front end lower hack lever is hinged with a first upper opening groove of a first front end hinging assembly, the other end of the first front end lower hack lever and the other end of the second front end lower hack lever are hinged through a hinging disc, the second front end expansion bracket group comprises a first front end hack lever and a second front end hack lever, one end of the first front end upper hack lever is hinged with a first front end connecting groove of a first front end hinging assembly, the other end of the first front end upper hack lever and the second front end upper hack lever is hinged with a hinging disc of a second front end lower hack lever through a first front end lower supporting rod, the first front end upper hack lever is connected with a first front end lower hack lever through a second front end lower supporting rod, the first front end lower hack lever is connected with a first front end lower hack lever through a second front end lower supporting rod, the first front end upper front end lower hack lever is connected with a first front end lower hack lever through a first front end upper front end connecting disc.

Further preferably, the rear end expansion bracket comprises a first rear end expansion bracket group and a second rear end expansion bracket group, the first rear end expansion bracket group comprises a first rear end lower hack lever and a second rear end lower hack lever, one end of the first rear end lower hack lever is hinged with a second upper opening groove of a rear end hinging assembly, the other end of the first rear end lower hack lever and the other end of the second rear end lower hack lever are hinged through a hinging disc, the second rear end expansion bracket group comprises a first rear end hack lever and a second rear end hack lever, one end of the first rear end lower hack lever is hinged with a first rear end connecting groove of the rear end hinging assembly, the other end of the first rear end hack lever and the second rear end upper hack lever is hinged through a hinging disc, the first rear end lower hack lever is connected with a first rear end lower hack lever and a second rear end lower hack lever through a second rear end lower prop rod, the first rear end lower hack lever is connected with a second rear end lower hack lever through a second rear end lower prop rod, and the first rear end lower hack lever is connected with the second rear end lower hack lever through a second rear end lower prop rod.

Further preferably, the handle assembly comprises handle hinging blocks hinged with handle connecting grooves on the two groups of front end hinging assemblies respectively, hinging gaps are formed in the inner sides of the handle hinging blocks, handle hinging rods are hinged to the two handle hinging blocks, handle folding blocks are hinged to the upper ends of the two handle hinging rods simultaneously, handle folding rods are sleeved on the handle folding blocks, handles are arranged at the upper ends of the handle folding rods, folding buttons are arranged on the handles, adjusting rods matched and sleeved with the handle folding rods are connected to the lower ends of the handle folding blocks, a plurality of adjusting holes are formed in the adjusting rods, an adjusting base is arranged in the handle folding rods, an adjusting cavity is formed in the adjusting base, an inclination adjusting block is arranged in the adjusting cavity, an inclination driving block is arranged on the inclination adjusting block in a matched mode, a pull rod is arranged between the inclination driving block and the folding buttons, and a spring is arranged between the folding buttons and the handles.

Further preferably, the bottom expansion bracket comprises two front bottom expansion rods hinged with the two front end connecting grooves respectively and two rear bottom expansion rods hinged with the two rear end connecting grooves respectively, the other ends of the two front bottom expansion rods and the other ends of the two rear bottom expansion rods are simultaneously connected with bottom folding blocks, the bottom folding blocks comprise bottom plates, diamond sleeves are arranged in the middle of the lower ends of the bottom plates, four bottom connecting blocks are arranged on four surfaces of the diamond sleeves, folding rollers are arranged at the lower ends of the four bottom connecting blocks, and the other ends of the two front bottom expansion rods and the other ends of the two rear bottom expansion rods are hinged with the four bottom connecting blocks respectively.

Further preferably, the moving assembly comprises a front wheel assembling and disassembling assembly and a rear wheel assembling and disassembling assembly which are respectively connected to the bottom ends of the front end supporting rod and the rear end supporting rod, the lower ends of the front wheel assembling and disassembling assembly and the rear wheel assembling and disassembling assembly are respectively connected with a front wheel and a rear wheel, brake pieces are arranged on the front wheel and/or the rear wheel, the front wheel assembling and disassembling assembly and the rear wheel assembling and disassembling assembly respectively comprise disassembling sleeves arranged in the front end supporting rod and the rear end supporting rod, connecting holes are formed in the disassembling sleeves, connecting columns with conical heads at the upper ends are matched in the disassembling sleeves, clamping pins which are convenient to plug in the connecting holes are arranged between the connecting columns and the disassembling sleeves, and wheel frames are connected to the bottom ends of the connecting columns.

The utility model has the beneficial effects that: including first side expansion bracket, second side expansion bracket, front end expansion bracket and rear end expansion bracket, all be connected through front end hinge subassembly between front end and the front end expansion bracket of first side expansion bracket and between front end and the front end expansion bracket of second side expansion bracket, front end hinge subassembly's front end has the handle subassembly, all be connected through rear end hinge subassembly between rear end and the rear end expansion bracket of first side expansion bracket and between rear end and the rear end expansion bracket of second side expansion bracket, the lower part hinge between front end hinge subassembly and the rear end hinge subassembly has the bottom expansion bracket, the bottom of front end hinge subassembly and rear end hinge subassembly can be dismantled and be connected with the movable assembly, first side expansion bracket and second side expansion bracket all include first set of N shape expansion bracket pole and second set of N shape expansion bracket pole, and first set of N shape expansion bracket pole and second set of N shape expansion bracket are articulated each other, through with first side expansion bracket, second side expansion bracket, front end and rear end expansion bracket and rear end hinge bracket, bottom hinge subassembly and front end and the whole expansion bracket, the whole expansion bracket and the expansion bracket of second side, the whole expansion bracket, the expansion bracket of the setting up and the expansion bracket is connected with the front end hinge subassembly, the whole expansion bracket and the expansion bracket is connected with the front end expansion bracket, the front end expansion bracket and the whole expansion bracket and the expansion bracket is folded.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic view of an exploded view of the front end hinge assembly and the front wheel of the present utility model.

Fig. 3 is a schematic view showing an exploded structure of the rear end hinge assembly and the rear wheel in the present utility model.

Fig. 4 is a schematic exploded view of the first and second sets of N-shaped expansion frame rods in the present utility model.

Fig. 5 is a schematic structural view of a front end expansion bracket in the present utility model.

Fig. 6 is a schematic structural view of a rear expansion bracket according to the present utility model.

Fig. 7 is a schematic view of the structure of the handle assembly of the present utility model.

Fig. 8 is a schematic structural view of the bottom expansion bracket according to the present utility model.

Description of the embodiments

The present utility model will be described in further detail with reference to the accompanying drawings and examples.

As shown in fig. 1-8, a folding cart comprises a first side expansion bracket 1, a second side expansion bracket 2, a front end expansion bracket 3 and a rear end expansion bracket 4, wherein the front end of the first side expansion bracket 1 is connected with the front end expansion bracket 3 and the front end of the second side expansion bracket 2 is connected with the front end expansion bracket 3 through a front end hinge assembly 5, the front end of the front end hinge assembly 5 is hinged with a handle assembly 6, the rear end of the first side expansion bracket 1 is connected with the rear end expansion bracket 4 and the rear end of the second side expansion bracket 2 is connected with the rear end expansion bracket 4 through a rear end hinge assembly 7, the lower part between the front end hinge assembly 5 and the rear end hinge assembly 7 is hinged with a bottom expansion bracket 8, the bottom ends of the front end hinge assembly 5 and the rear end hinge assembly 7 are detachably connected with a moving assembly 9, the first side expansion bracket 1 and the second side expansion bracket 2 all include first group N shape expansion bracket pole 11 and second group N shape expansion bracket pole 21, first group N shape expansion bracket pole 11 and second group N shape expansion bracket pole 21 are articulated each other, through with first side expansion bracket 1, second side expansion bracket 2, front end expansion bracket 3, rear end expansion bracket 4 and bottom expansion bracket 8 set up with front end hinge assembly 5, rear end hinge assembly 7 and the flexible folding overall structure that handle assembly 6 formed, during the use, through the cooperation linkage of handle assembly 6 control first side expansion bracket 1, second side expansion bracket 2, front end expansion bracket 3, rear end expansion bracket 4 and bottom expansion bracket 8 setting with front end hinge assembly 5, rear end hinge assembly 7, reach folding and expansion of whole linkage, whole folding and expansion operation is simple and convenient, and whole folding and expansion back is firm.

As shown in fig. 1 to 3, in the present embodiment, the front end hinge assembly 5 includes a front end support rod 51, a front end upper hinge block 52 is connected to an upper portion of the front end support rod 51, the front end upper hinge block 52 is provided with a first upper opening groove 53 and a first lower opening groove 54, a front end lower hinge block 55 is connected to a lower portion of the front end support rod 51, a first front end connection groove 56, a second front end connection groove 57 and a third front end connection groove 58 are provided at a rear end of the front end lower hinge block 55, a handle connection groove 59 is provided at a front end of the front end lower hinge block 55, the rear end hinge assembly 7 includes a rear end support rod 71, a rear end upper hinge block 72 is connected to an upper portion of the rear end support rod 71, the rear end upper hinge block 72 is provided with a second upper opening groove 73 and a second lower opening groove 74, the lower part of the rear end supporting rod 71 is connected with a rear end lower hinge block 75, the front end of the rear end lower hinge block 75 is provided with a first rear end connecting groove 76, a second rear end connecting groove 77 and a third rear end connecting groove 78, and the first side expansion bracket 1, the second side expansion bracket 2, the front end expansion bracket 3, the rear end expansion bracket 4, the bottom expansion bracket 8 and the handle assembly 6 are hinged into an integral structure through the front end upper hinge block 52 and the front end lower hinge block 55 of the two groups and the rear end upper hinge block 72 and the rear end lower hinge block 75 of the two groups, so that the integral linkage is convenient to fold and unfold.

As shown in fig. 4, in this embodiment, the first side expansion bracket 1 and the second side expansion bracket 2 each include a first group of N-shaped expansion bracket rods 11 and a second group of N-shaped expansion bracket rods 21, the first group of N-shaped expansion bracket rods 11 and the second group of N-shaped expansion bracket rods 21 are hinged to each other, one end of the first group of N-shaped expansion bracket rods 11 is hinged to the upper portion of the front end hinge assembly 5, and the other end is hinged to the lower portion of the rear end hinge assembly 7; one end of the second group of N-shaped telescopic frame rods 21 is hinged with the upper part of the rear end hinging assembly 7, the other end is hinged with the lower part of the front end hinging assembly 5, the first group of N-shaped telescopic frame rods 11 comprises a first frame rod 12, a second frame rod 13 and a third frame rod 14, the first frame rod 12 is hinged with the first lower opening groove 54, the third frame rod 14 is hinged with the third rear end connecting groove 78, the second group of N-shaped telescopic frame rods 21 comprises a fourth frame rod 22, a fifth frame rod 23 and a sixth frame rod 24, the fourth frame rod 22 is hinged with the second lower opening groove 74, the sixth frame rod 24 is hinged with the third front end connecting groove 58, all the first frame rod 12 is hinged with the second frame rod 13, the second frame rod 13 is hinged with the third frame rod 14, the fourth frame rod 22 is hinged with the fifth frame rod 23 and the sixth frame rod 24 are hinged with the sixth frame rod 24 through a hinging disc 15, the middle part of the first hack lever 12 is hinged with the middle part of the sixth hack lever 24, the middle part of the second hack lever 13 is hinged with the middle part of the fifth hack lever 23, the middle part of the third hack lever 14 is hinged with the middle part of the fourth hack lever 22, the middle parts of the second hack lever 13 and the middle part of the fifth hack lever 23 are both provided with long round grooves 25, the first hack lever 12 is connected with a hinged disc connecting the fifth hack lever 23 and the sixth hack lever 24 through a first side supporting rod 16, the fourth hack lever 22 is connected with a hinged disc connecting the second hack lever 13 and the third hack lever 14 through a second side supporting rod 26, the long round grooves 25 facilitate the flexible sliding of the upper and lower positions of the middle part of the second hack lever 13 and the middle part of the fifth hack lever 23 when folding and unfolding, are favorable for smooth and in place when folding and unfolding, the two ends of the first group of the N-shaped telescopic hack lever 11 and the two ends of the second group of the N-shaped telescopic hack lever 21, is connected with the front end upper hinge blocks 52 and the front end lower hinge blocks 55 of the two groups and the rear end upper hinge blocks 72 and the rear end lower hinge blocks 75 of the two groups respectively, and when folding and unfolding, both ends of the first group of N-shaped expansion frame rods 11 and both ends of the second group of N-shaped expansion frame rods 21 are fixedly hinged to rotate, and the first side frame rods 12, the first side frame rods 16, the second frame rods 13 and the third frame rods 14, the second side frame rods 26, the fourth frame rods 22, the fifth frame rods 23 and the sixth frame rods 24 are respectively telescopic through the rotation of the first side frame rods 12, the first side frame rods 16, the second side frame rods 23 and the sixth frame rods 24, so that the first side expansion frame rods 1 and the second side expansion frame rods 2 are folded and unfolded in the length of the two sides as a whole.

As shown in fig. 5 and 6, in the present embodiment, the front expansion bracket 3 includes a first front expansion bracket group including a first front lower rack bar 31 and a second front lower rack bar 34, one end of which is hinged with a first upper opening groove 53 of one of the front hinge assemblies, respectively, the other ends of the first front lower rack bar 31 and the second front lower rack bar 34 are hinged with a hinge plate, the second front expansion bracket group including a first front upper rack bar 32 and a second front upper rack bar 33, one end of which is hinged with a first front connecting groove 56 of one of the front hinge assemblies, respectively, the other ends of the first front upper rack bar 32 and the second front upper rack bar 33 are hinged with a hinge plate, the second front upper rack bar 33 is connected with a hinge plate connecting the first front lower rack bar 31 and the second front lower rack bar 34 through a first front lower rack bar 35, the first front end lower rack bar 32 is connected with the hinge plate connecting the first front end lower rack bar 31 and the second front end lower rack bar 34 through a second front lower rack bar 36, the first front end lower rack bar 31 is connected with the hinge plate connecting the first front end upper rack bar 32 and the second front end upper rack bar 33 through a first front upper rack bar 37, the second front end lower rack bar 34 is connected with the hinge plate connecting the first front end upper rack bar 32 and the second front end upper rack bar 33 through a second front upper rack bar 38, the rear end expansion bracket 4 comprises a first rear end expansion bracket group and a second rear end expansion bracket group, the first rear end expansion bracket group comprises a first rear end lower rack bar 43 and a second rear end lower rack bar 44, one end of which is respectively hinged with a second upper opening groove 73 of one group of rear end hinge assemblies, the other ends of the first rear end lower rack bar 43 and the second rear end lower rack bar 44 are hinged through the hinge plate, the second rear end expansion bracket group comprises a first rear end hack lever 41 and a second rear end hack lever 42, one end of which is hinged with a first rear end connecting groove 76 of one group of rear end hinging components, the other end of the first rear end hack lever 41 and the second rear end hack lever 42 is hinged through a hinging disc, a first rear end lower hack lever 43 is connected with the hinging disc connecting the first rear end hack lever 41 and the second rear end hack lever 42 through a first rear lower supporting rod 45, a second rear end lower hack lever 44 is connected with the hinging disc connecting the first rear end hack lever 41 and the second rear end hack lever 42 through a second rear lower supporting rod 46, a first rear end hack lever 41 is connected with the hinging disc connecting the first rear end lower hack lever 43 and the second rear end lower hack lever 44 through a second rear lower supporting rod 47, and the first rear end hack lever 41 is connected with the hinging disc connecting the first rear end lower hack lever 43 and the second rear end lower hack lever 44, and the second rear end expansion bracket group and the first rear end expansion bracket group and the second rear end expansion bracket group are simultaneously unfolded by the width of the whole expansion bracket and the expansion bracket.

As shown in fig. 8, in this embodiment, the bottom expansion bracket 8 includes two front bottom expansion rods 81 respectively hinged to the two second front end connecting grooves 57 and two rear bottom expansion rods 82 respectively hinged to the two second rear end connecting grooves 77, the other ends of the two front bottom expansion rods 81 and the other ends of the two rear bottom expansion rods 82 are simultaneously connected with a bottom folding block 83, the bottom folding block 83 includes a bottom plate 84, a diamond-shaped sleeve 85 is arranged in the middle of the lower end of the bottom plate 84, four bottom connecting blocks 86 are arranged on four surfaces of the diamond-shaped sleeve 85, folding rollers 87 are respectively arranged at the lower ends of the four bottom connecting blocks 86, and the other ends of the two front bottom expansion rods 81 and the other ends of the two rear bottom expansion rods 82 are respectively hinged to the four bottom connecting blocks 86.

In this embodiment, as shown in fig. 7, the handle assembly 6 includes handle hinge blocks 61 hinged to the handle connecting grooves 59 on the two front end hinge assemblies 5, hinge gaps are formed on the inner sides of the handle hinge blocks 61, handle hinge rods 62 are hinged to the two handle hinge blocks 61, handle folding blocks 63 are hinged to the upper ends of the two handle hinge rods 62 at the same time, handle folding rods 64 are sleeved on the handle folding blocks 63, handles are arranged at the upper ends of the handle folding rods 64, folding buttons 65 are arranged on the handles, adjusting rods 66 matched and sleeved with the handle folding rods 64 are connected to the lower ends of the handle folding blocks 63, a plurality of adjusting holes 67 are formed in the adjusting rods 66, an adjusting base 68 is arranged in the handle folding rods 64, an adjusting cavity is formed in the adjusting base 68, an inclination adjusting block 69 is arranged in the adjusting cavity, an inclination driving block 610 is matched and a pull rod 611 is arranged between the inclination driving block 610 and the folding buttons 65, a spring is arranged between the folding button 65 and the handle, when the folding button 65 is integrally folded, the handle folding rod 64 is lifted upwards, the two handle hinging rods 62 are driven to move upwards and shrink, the front end hinging assembly 5 and the rear end hinging assembly 7 are used for pulling the front end telescopic frame 3 and the rear end telescopic frame 4 to integrally move inwards, the two front bottom telescopic rods 81 and the two rear bottom telescopic rods 82 of the bottom telescopic frame 8 are pulled to enable the diamond-shaped sleeve 85 to move upwards under the action of the folding roller 87, the two front bottom telescopic rods 81 and the two rear bottom telescopic rods 82 are used for pulling the diamond-shaped sleeve 85 to move upwards, the first group of N-shaped telescopic frame rods 11 and the second group of N-shaped telescopic frame rods 21 are pulled to move inwards, after the two handle hinging rods 62 are folded in place in a shrinkage manner, the folding button 65 is released, the folding button 65 is reset and clamped at the position under the action of the spring, thus achieving the aim of linkage folding and being stable after folding; when the folding device is unfolded, the folding button 65 is pressed down, the handle folding rod 64 is pressed down, the two handle hinging rods 62 are pushed to move downwards for unfolding, meanwhile, the front end hinging assembly 5 and the rear end hinging assembly 7 are used for pushing the front end telescopic frame 3 and the rear end telescopic frame 4 to integrally move outwards, the two front bottom telescopic rods 81 and the two rear bottom telescopic rods 82 of the bottom telescopic frame 8 are pushed to enable the diamond-shaped sleeve 85 to move downwards under the action of the folding roller 87, the two front bottom telescopic rods 81 and the two rear bottom telescopic rods 82 are used for pushing the first group of N-shaped telescopic frame rods 11 and the second group of N-shaped telescopic frame rods 21 to move outwards for unfolding, after the folding button 65 is unfolded in place, the folding button 65 is reset and clamped at the position under the action of the spring, and therefore the aim of linkage unfolding is achieved.

As shown in fig. 2 and 3, in this embodiment, the moving assembly 9 includes a front wheel assembly and a rear wheel assembly respectively connected to the bottom ends of the front end support rod 51 and the rear end support rod 71, the lower ends of the front wheel assembly and the rear wheel assembly are respectively connected to the front wheel 91 and the rear wheel 92, the front wheel 91 and/or the rear wheel 92 are provided with a brake member 97, the front wheel assembly and the rear wheel assembly each include a detachable sleeve 93 disposed in the front end support rod 51 and the rear end support rod 71, the detachable sleeves 93, the front end support rod 51 and the rear end support rod 71 are provided with connection holes 94, the detachable sleeves 93 are internally fitted with connection posts 95 with tapered heads, the connection posts 95 are provided with locking pins 96 which are convenient to be inserted into the connection holes 94, and the bottom ends of the connection posts 95 are connected with wheel frames, and when in use, the connection posts 95 are inserted into the detachable sleeves 93, and the tapered heads at the upper ends of the connection posts 95 are pushed upwards against the locking pins 96, so that the connection posts 95 and the detachable sleeves 93 and the detachable sleeves are connected with the front support rod 92 and the front wheel frame 93, and the detachable sleeves 93 are connected with the front wheel frame 93, and the detachable sleeves 93, and the connection posts 95 are detached from each other.

The present disclosure should not be construed as limiting the utility model to any particular embodiment or application within its scope as contemplated by the present disclosure.

Claims

1. A folding cart, characterized in that: including first side expansion bracket, second side expansion bracket, front end expansion bracket and rear end expansion bracket, all be connected through front end hinge subassembly between front end and the front end expansion bracket of first side expansion bracket and between the front end and the front end expansion bracket of second side expansion bracket, front end hinge subassembly has the handle subassembly, all be connected through rear end hinge subassembly between the rear end and the rear end expansion bracket of first side expansion bracket and between the rear end and the rear end expansion bracket of second side expansion bracket, the lower part hinge between front end hinge subassembly and the rear end hinge subassembly has the bottom expansion bracket, the bottom of front end hinge subassembly and rear end hinge subassembly can be dismantled and be connected with the removal subassembly, first side expansion bracket and second side expansion bracket all include first set of N shape expansion bracket pole and second set of N shape expansion bracket pole, first set of N shape expansion bracket pole and second set of N shape expansion bracket pole each other slip hinge.

2. A folding cart according to claim 1, wherein: the front end hinge assembly comprises a front end supporting rod, the upper portion of the front end supporting rod is connected with a front end upper hinge block, the front end upper hinge block is provided with a first upper opening groove and a first lower opening groove, the lower portion of the front end supporting rod is connected with a front end lower hinge block, the rear end of the front end lower hinge block is provided with a first front end connecting groove, a second front end connecting groove and a third front end connecting groove, and the front end lower hinge block is provided with a handle connecting groove.

3. A folding cart according to claim 2, wherein: the rear end hinge assembly comprises a rear end supporting rod, the upper portion of the rear end supporting rod is connected with a rear end upper hinge block, the rear end upper hinge block is provided with a second upper opening groove and a second lower opening groove, the lower portion of the rear end supporting rod is connected with a rear end lower hinge block, and the front end of the rear end lower hinge block is provided with a first rear end connecting groove, a second rear end connecting groove and a third rear end connecting groove.

4. A folding cart according to claim 3, wherein: the first group of N-shaped expansion frame rods comprise a first frame rod, a second frame rod and a third frame rod, the first frame rod is hinged with the first lower opening groove, the third frame rod is hinged with the third rear end connecting groove, the second group of N-shaped expansion frame rods comprise a fourth frame rod, a fifth frame rod and a sixth frame rod, the fourth frame rod is hinged with the second lower opening groove, the sixth frame rod is hinged with the third front end connecting groove, all the first frame rod, the second frame rod, the third frame rod, the fourth frame rod, the fifth frame rod and the sixth frame rod are hinged through a hinge plate, the first frame rod is hinged with the sixth frame rod, the second frame rod is hinged with the fifth frame rod, the third frame rod is hinged with the fourth frame rod, long round grooves are formed in the middle of the second frame rod and the fifth frame rod, the first frame rod and the hinge plate of the fifth frame rod are connected through a first side support rod, and the fourth frame rod and the third frame rod are connected through a second side hinge plate.

5. A folding cart according to claim 3, wherein: the front end expansion bracket comprises a first front end expansion bracket group and a second front end expansion bracket group, the first front end expansion bracket group comprises a first front end lower hack lever and a second front end lower hack lever, one end of the first front end lower hack lever is hinged with a first upper opening groove of a group of front end hinge components, the other end of the first front end lower hack lever and the other end of the second front end lower hack lever are hinged through a hinge plate, the second front end expansion bracket group comprises a first front end hack lever and a second front end hack lever, one end of the first front end upper hack lever is hinged with a first front end connecting groove of a group of front end hinge components, the other end of the first front end upper hack lever and the other end of the second front end upper hack lever are hinged through a hinge plate, the second front end upper hack lever is connected with a first front end lower hack lever through a first front end lower prop rod, the first front end lower hack lever is connected with a second front end lower hack lever through a second front end lower prop rod, the first front end upper hack lever is connected with the first front end upper hack lever and the second front end lower hack lever through a first front end upper front end lower prop rod.

6. A folding cart according to claim 3, wherein: the rear end expansion bracket comprises a first rear end expansion bracket group and a second rear end expansion bracket group, the first rear end expansion bracket group comprises a first rear end lower hack lever and a second rear end lower hack lever, one end of the first rear end lower hack lever is hinged with a second upper opening groove of one group of rear end hinge components, the other end of the first rear end lower hack lever and the second rear end lower hack lever is hinged through a hinge plate, the second rear end expansion bracket group comprises a first rear end upper hack lever and a second rear end upper hack lever, one end of the first rear end upper hack lever is hinged with a first rear end connecting groove of one group of rear end hinge components, the other end of the first rear end upper hack lever and the second rear end upper hack lever is hinged with a hinge plate, the first rear end lower hack lever is connected with the hinge plate of the first rear end upper hack lever through a first rear end lower hack lever, the second rear end lower hack lever is connected with the hinge plate through a second rear end lower hack lever, the first rear end lower hack lever is connected with the first rear end lower hack lever through a second rear end lower hack lever, the first rear end lower hack lever is connected with the second rear end lower hack lever through a second rear end lower hack lever.

7. A folding cart according to claim 3, wherein: the handle assembly comprises handle hinging blocks hinged with handle connecting grooves on the two groups of front end hinging assemblies respectively, hinging gaps are formed in the inner sides of the handle hinging blocks, handle hinging rods are hinged to the two handle hinging blocks, handle folding blocks are hinged to the upper ends of the two handle hinging rods at the same time, handle folding rods are sleeved on the handle folding blocks, handles are arranged at the upper ends of the handle folding rods, folding buttons are arranged on the handles, adjusting rods matched with the handle folding rods are connected to the lower ends of the handle folding blocks, a plurality of adjusting holes are formed in the adjusting rods, an adjusting base is arranged in the handle folding rods, an adjusting cavity is formed in the adjusting base, an inclination adjusting block is arranged in the adjusting cavity, an inclination driving block is matched with the inclination adjusting block, a pull rod is arranged between the inclination driving block and the folding buttons, and springs are arranged between the folding buttons and the handles.

8. A folding cart according to claim 3, wherein: the bottom expansion bracket comprises two front bottom expansion rods hinged with the two second front end connecting grooves respectively and two rear bottom expansion rods hinged with the two second rear end connecting grooves respectively, the other ends of the two front bottom expansion rods and the other ends of the two rear bottom expansion rods are simultaneously connected with bottom folding blocks, the bottom folding blocks comprise bottom plates, diamond sleeves are arranged in the middle of the lower ends of the bottom plates, four bottom connecting blocks are arranged on four surfaces of the diamond sleeves, folding idler wheels are arranged at the lower ends of the four bottom connecting blocks, and the other ends of the two front bottom expansion rods and the other ends of the two rear bottom expansion rods are hinged with the four bottom connecting blocks respectively.

9. A folding cart according to claim 3, wherein: the movable assembly comprises a front wheel loading and unloading assembly and a rear wheel loading and unloading assembly which are respectively connected to the bottom ends of the front end supporting rod and the rear end supporting rod, the lower ends of the front wheel loading and unloading assembly and the rear wheel loading and unloading assembly are respectively connected with a front wheel and a rear wheel, a brake piece is arranged on the front wheel and/or the rear wheel, the front wheel loading and unloading assembly and the rear wheel loading and unloading assembly respectively comprise a disassembly sleeve arranged in the front end supporting rod and the rear end supporting rod, connecting holes are formed in the disassembly sleeve, the front end supporting rod and the rear end supporting rod, a connecting column with a conical head at the upper end is matched in the disassembly sleeve, a bayonet lock which is convenient to plug in the connecting holes is arranged between the connecting column and the disassembly sleeve, and the bottom end of the connecting column is connected with a wheel frame.