CN115583274A - Gather together folding handcart of type - Google Patents

Abstract

The invention discloses a gathering type folding trolley, which comprises a front wall, a rear wall, a frame body consisting of two symmetrical side walls, an underframe at the bottom of the frame body and four rollers respectively arranged on two sides of the front wall and two sides of the rear wall, wherein the front wall comprises two vertical pipes, two upper fixing seats, two lower fixing seats and a Y-shaped folding assembly; the upper end and the lower end of either side of the left side and the right side of the Y-shaped folding component are respectively riveted with the upper fixing seat and the lower fixing seat; the rear wall and the front wall are of the same structure; the underframe comprises a central connecting seat, two telescopic pipes, two side connecting seats and four supporting pipes; the side wall comprises two lateral transverse pipes, two X-shaped connecting rods formed by cross riveting of long pipes and short pipes and a middle transverse pipe. Each surface of the frame can be folded and stored, the gathering is concentrated, the size is small, and the unfolding and the folding are convenient and quick.

Description

Gather together type folding handcart

Technical Field

The invention belongs to the technical field of trolleys, and particularly relates to a gathering type folding trolley.

Background

The trolley is used as a tool for field material transportation in industrial production and shopping of people, and brings great convenience to production and life. The common trolley, one is not foldable, is consigned by mounting wheels under a flat plate, and the trailer cannot be folded, and occupies a large space when not used; the other is foldable and designed for carrying.

Chinese patent publication No. CN205469183U discloses a fixing structure of a foldable trolley, which includes a frame and a plurality of wheels disposed at the bottom of the frame, wherein the frame includes two frames symmetrically disposed in front and back, and a middle support frame disposed between the two frames, the middle support frame includes two i-shaped rods and a transverse connecting rod connecting the two i-shaped rods, each i-shaped rod has an upper short rod, a lower short rod, and a vertical rod connecting the upper short rod and the lower short rod, the upper short rod is longer than the lower short rod, the two frame cross rods of the frame are respectively pivoted to the two ends of the upper short rod and the lower short rod of each i-shaped rod, wherein the frame cross rod pivoted to the lower short rod of the i-shaped rod is respectively connected to the i-shaped rods through a pivoting member, one end of each pivoting member is fixed to the frame cross rod, the other end is pivoted to the lower short rod of the i-shaped rod, one side of each pivoting member facing the lower short rod is respectively provided with a slot, at least two sides of one of the i-shaped rod are respectively provided with a pin engaged with the slots, when the two pin members are disposed, the two pin members are separated from the two slots, and the two pivoting members are folded and the two slots are separated from each other. This fixed knot of folding handcart constructs, compare the not folding dull and stereotyped shallow of tradition and realized folding purpose of accomodating, but folding handcart's front side, the rear side adopts the framework to realize, the structure of framework is fixed, its width does not change when folding up has restricted the front side, the width of rear side, therefore the whole width of the front and back face after folding up is unchangeable, only the middle part support frame between two frameworks draws in and makes front and back length change, therefore folding volume is still great, still need research improvement in order to reduce the volume of gathering together whole car.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a cross folding cart which can be folded and stored integrally, is concentrated and small in size, and is convenient and quick to unfold and fold.

In order to achieve the purpose, the invention adopts the following technical scheme: a gathering type folding trolley comprises a trolley frame, wherein the trolley frame comprises a front wall, a rear wall, a frame body formed by two symmetrical side walls, an underframe at the bottom of the frame body and four rollers arranged on two sides of the front wall and two sides of the rear wall respectively, the front wall comprises two vertical pipes, two upper fixing seats, two lower fixing seats and a Y-shaped folding assembly, the upper end and the lower end of each vertical pipe are correspondingly provided with the upper fixing seat and the lower fixing seat, and the rollers are arranged at the bottoms of the vertical pipes; the upper end and the lower end of either side of the left side and the right side of the Y-shaped folding component are respectively riveted with the upper fixing seat and the lower fixing seat; the rear wall and the front wall are of the same structure; the chassis comprises a central connecting seat, two telescopic pipes, two side connecting seats and four supporting pipes, wherein four corners of the central connecting seat are respectively riveted with one end of one supporting pipe, the other end of the supporting pipe is riveted with one lower fixing seat, the left side and the right side of the central connecting seat are respectively riveted with one end of one telescopic pipe, and the other end of each telescopic pipe is riveted with the side connecting seat; the side wall comprises two side transverse pipes, two X-shaped connecting rods formed by cross riveting of long pipes and short pipes and a middle transverse pipe; the two X-shaped connecting rods are symmetrically arranged, the upper end of a short pipe of one X-shaped connecting rod is hinged with one end of a transverse pipe at one side, the lower end of the short pipe is hinged with a short pipe of the other X-shaped connecting rod, the hinged part of the short pipe and the short pipe is riveted with one side connecting seat, the upper end of the long pipe is hinged with one end of a transverse pipe at the middle part, and the lower end of the long pipe is riveted with a lower fixing seat; the other end of the lateral transverse pipe is riveted with the upper fixing seat.

Furthermore, the Y-shaped folding assembly comprises two upper transverse pipes, an upper connecting piece, two upper connecting pipes, a vertical pipe, a lower connecting piece and two lower connecting pipes, wherein the upper connecting piece and the lower connecting piece are respectively and fixedly arranged at two ends of the vertical pipe; one ends of the two upper connecting pipes are symmetrically riveted on two sides of the upper connecting piece, the other ends of the two upper connecting pipes are respectively hinged with one ends of the two upper transverse pipes, and the other ends of the two upper transverse pipes are respectively riveted with one upper fixing seat; one ends of the two lower connecting pipes are symmetrically riveted on two sides of the lower connecting piece, and the other ends of the two lower connecting pipes are riveted with the lower fixing seat. Two but go up the beta structure of connecting pipe, last connecting piece, standpipe, lower connecting piece constitution Y shape, the rethread is violently managed, four root canals of lower connecting pipe and is connected with last fixing base or lower fixing base and form a whole, has realized that the both sides of antetheca or back wall can be to the folding of central direction.

Furthermore, the Y-shaped folding assembly further comprises a set of meshed gears, one side of each gear is provided with a plurality of sawteeth arranged on the arc surface, the other side of each gear is embedded into a fixing part of the lower transverse pipe, the lower transverse pipe and the gears are embedded into grooves of the lower connecting piece, and the lower transverse pipe, the fixing parts and the lower connecting piece are riveted.

Further, the lower connection pipe is longer than the upper connection pipe.

Furthermore, in the chassis, the junction of the central connecting seat and the telescopic pipe or the supporting pipe is provided with an upward concave mounting groove, and the telescopic pipe or the supporting pipe which is embedded into the mounting groove and riveted can be turned over downwards relative to the mounting groove.

Furthermore, the side connecting seat adopts L shape connecting seat, and the vertical section of L shape connecting seat is articulated with the articulated position of the lower extreme of two nozzle stub, and the upper surface of the horizontal section of L shape connecting seat is to the undermining recess, the flexible pipe other end embedding recess is riveted.

The handle assembly comprises a handle, an upper pull pipe, a handle connecting seat, an adjusting assembly, two handle bases and two symmetrical lower pull pipes, wherein one end of each of the two lower pull pipes is riveted with the lower side of the handle connecting seat, the other end of each of the two lower pull pipes is riveted with one handle base, and each handle base is riveted with one lower fixing seat; the handle is arranged at the upper end of the upper pull pipe, and the lower end of the upper pull pipe is movably connected with the handle connecting seat through the adjusting component.

Furthermore, the handle assembly further comprises two groups of gaskets and springs, the springs are arranged in grooves of the gaskets, and the rivets penetrate through the lower fixing seat, the gaskets, the springs and the handle base to be riveted.

Furthermore, the adjusting assembly comprises a button, an ejector rod, a pipe plug provided with a sliding groove and a fixing pin provided with a slope at the lower end, the pipe plug is embedded into the lower end of the upper pull pipe, the slope is arranged in the sliding groove, and the fixing pin sequentially penetrates through a notch at the lower end of the upper pull pipe and a pin hole on the handle connecting seat; the button arranged on the handle is fixed with one end of the ejector rod arranged in the upper pull pipe, and the other end of the ejector rod is in contact with the slope.

Furthermore, the lateral transverse pipes are hinged with the short pipes, the long pipe is hinged with the middle transverse pipe, and the two short pipes are hinged through pipe connecting pieces; the pipe connecting piece comprises two symmetrical hinged pieces, each hinged piece comprises a riveting part and an inserting part, the two riveting parts are riveted through rivets, and the inserting parts are inserted into the lateral transverse pipes or the short crossed pipes and are fixed through fasteners.

By adopting the technical scheme of the invention, the invention has the beneficial effects that: through the Y-shaped folding components of the front wall and the rear wall, the folding of the side walls and the folding of the bottom frame, a plurality of surfaces can be gathered and stored, so that the high gathering of the stored volume is realized, and the volume is smaller; two lower transverse pipes in the Y-shaped folding assembly are linked through a gear inside the lower connecting piece, so that the stability and the synchronism during folding and stretching are improved; the chassis is connected with the front wall and the rear wall through the symmetrical telescopic pipes, and the supporting connection with the side walls is enhanced on the basis of the connection with the front wall and the rear wall, so that the supporting strength of the whole chassis is enhanced; the handle is telescopic by adopting the button, so that the length of the handle is convenient to adjust, and the use is convenient and quick; and a gasket and a spring are additionally arranged at the connecting part of the handle assembly and the front wall, and the spring is used for buffering the impact force of the handle assembly in the using process of the trolley, so that the shock resistance and the dynamic stability are enhanced.

Drawings

FIG. 1 is an angled perspective view of a compact folding cart in an unfolded state;

FIG. 2 is a perspective view of the compact folding cart at another angle in an unfolded state;

FIG. 3 is a side elevational view of a bunched folding cart;

FIG. 4 is a perspective view of a compact folding cart shown in a folded position at an angle;

FIG. 5 is a perspective view of the folded condition of a compact folding cart at another angle;

FIG. 6 is a perspective view of a collapsed foldable wagon in a disassembled state;

FIG. 7 is a disassembled state view of the Y-fold assembly;

FIG. 8 is a disassembled view of the pull handle assembly;

fig. 9 is a perspective view of the chassis.

In the figure: 1 front wall, 11 vertical pipes, 12 upper fixing seats, 13 lower fixing seats, 2 rear walls, 3 side walls, 31 long pipes, 32 short pipes, 33 side transverse pipes, 34 pipe connectors, 341 riveting parts, 342 inserting parts, 35 middle transverse pipes, 4 underframe, 41 center connecting seats, 42 telescopic pipes, 43 side connecting seats, 44 supporting pipes, 5 rollers, 51 roller supports, 52 axles, 6 handle components, 61 handles, 62 upper pulling pipes, 62a notches, 63 handle connecting seats, 63a pin holes, 64 handle bases, 65 lower pulling pipes, 66 buttons, 67 push rods, 68 fixing pins, 68a slopes, 69 washers, 610 springs, 611 pipe plugs, 611a sliding grooves, 612 small springs, 7Y-shaped folding components, 71 upper transverse pipes, 72 upper connecting pipes, 73 upper connecting parts, 74 vertical pipes, 75 lower connecting parts, 75a grooves, 76 gears, 76a sawteeth, 76b fixing parts and 77 lower connecting pipes.

Detailed Description

The embodiments of the present invention will be further explained with reference to the drawings, so that the technical solutions can be more clearly and clearly understood.

As shown in fig. 1 to 9, the present embodiment relates to a cross-foldable stroller, which comprises a frame, wherein the frame comprises a front wall 1, a rear wall 2, a frame body composed of two symmetrical side walls 3, an underframe 4 at the bottom of the frame body, and four rollers 5 respectively arranged on two sides of the front wall 1 and two sides of the rear wall 2. Wherein the front wall 1, the rear wall 2, the side walls 3 and the bottom frame 4 can be folded and gathered respectively, and the overall volume of the product is effectively reduced when the product is not used.

Specifically, the front wall 1 includes two vertical tubes 11, a Y-shaped folding assembly 7, two upper fixing seats 12 and two lower fixing seats 13, the upper and lower ends of each vertical tube 11 are respectively provided with the upper fixing seat 12 and the lower fixing seat 13, the upper and lower ends of either the left side or the right side of the folding assembly 13 are respectively riveted with the upper fixing seat 12 and the lower fixing seat 13, the upper and lower ends of the front side or the rear side of the side wall 3 are respectively riveted with the upper fixing seat 12 and the lower fixing seat 13, and the roller 5 is installed at the bottom of the vertical tube 12; the rear wall 2 is of the same construction as the front wall 1.

The Y-shaped folding assembly 7 shown in this embodiment includes two upper horizontal tubes 71, two symmetrical upper connecting tubes 72, an upper connecting member 73, a vertical tube 74, a lower connecting member 75 and two lower connecting tubes 77, both ends of the upper connecting member 73 are respectively riveted with one ends of the two upper connecting tubes 72, the other ends of the two upper connecting tubes 72 are hinged with one ends of the two upper horizontal tubes 71, the other ends of the two upper horizontal tubes 71 are respectively riveted with the two upper fixing seats 12, the upper connecting member 73, the lower connecting member 74 is respectively and fixedly mounted at both ends of the vertical tube 74, the lower connecting member 75 is riveted with one ends of the two symmetrical lower connecting tubes 77, and the other ends of the two lower connecting tubes 77 are riveted with the lower fixing seats 13.

The upper transverse pipe 71 and the short pipe 76 are hinged through the pipe connecting piece 34, the pipe connecting piece 34 adopts two symmetrical structures, one end of the pipe connecting piece is inserted into the upper transverse pipe 71 or the upper connecting pipe 72, and the other end of the pipe connecting piece enables the two symmetrical structures to be rotatably connected through a pin.

In a preferred embodiment, the i-shaped link assembly 7 further comprises a set of meshed gears 76, wherein one side of the gears 76 is provided with a plurality of saw teeth 76a arranged on an arc surface, the other side of the gears 76 is provided with fixing parts 76b embedded in the lower cross tube 72, the lower cross tube 72 and the gears are embedded in grooves 75a of the lower connecting piece 75, and the lower cross tube 72 and the fixing parts 76b are riveted with the lower connecting piece 75. The gears 76 which are meshed with each other are arranged at the riveting positions of the two lower cross tubes 72 and the lower connecting pieces 75, so that the stability and the synchronism during folding and stretching are improved.

The side wall 3 comprises two X-shaped connecting rods formed by cross riveting of a long pipe 31 and short pipes 32, a group of lateral transverse pipes 33 and a middle transverse pipe 35, wherein the two X-shaped connecting rods are symmetrically arranged, the upper end of the short pipe 32 of one X-shaped connecting rod is hinged with one end of the lateral transverse pipe 33, the lower end of the short pipe 32 is hinged with the short pipe of the other X-shaped connecting rod, the hinged parts of the short pipe 32 and the short pipe of the other X-shaped connecting rod are riveted with one lateral connecting seat 43, the upper end of the long pipe 31 is hinged with one end of the middle transverse pipe 35, and the lower end of the long pipe 31 is riveted with one lower fixing seat 13; the other end of the lateral transverse pipe 33 is riveted with the upper fixed seat 12. The long tube 32, the short cross tube 33 and the long tube 32 are hinged by the tube connecting piece 77.

The long pipe 31 and the short pipe 32 have different lengths, and specifically, the length of the long pipe 31 is greater than that of the short pipe 32.

In a preferred embodiment, the hinges between the lateral transverse tubes 33 and the short tubes 32, between the long tube 31 and the short cross tube 33, and between the two short tubes 32 are connected by tube connectors 34; the pipe connector 34 includes two symmetrical hinge members, each of which includes a rivet 341 and an insertion portion 342, the two rivet portions 341 are riveted by a rivet, and the insertion portion 342 is inserted into the lateral cross pipe or the short cross pipe and fixed by a fastener (e.g., a screw).

The illustrated underframe 4 comprises a central connecting seat 41, two telescopic pipes 42, two side connecting seats 43 and four supporting pipes 44, wherein grooves are formed in four corners of the central connecting seat 41, specifically, the lower surfaces of the four corners are upwards provided with grooves, each groove is riveted with one end of one supporting pipe 44, the supporting pipes 44 can rotate downwards relative to the grooves, and the other ends of the supporting pipes 44 are riveted with one lower fixing seat 14; the lateral grooves on the left and right sides of the central connecting base 41 are respectively riveted with one end of a telescopic tube 42, the same telescopic tube 42 rotates downwards relative to the lateral grooves, the other end of the telescopic tube 42 is riveted with one end of a lateral connecting base 43, and the other end of the lateral connecting base 43 is riveted with a tube connecting piece 77 which is connected with two short tubes 32 on the side wall 3. The support tube 44 and the extension tube 42 rotate downwards relative to the central connecting seat 41 to realize folding and gathering of the underframe, and the position of the central connecting seat 41 is higher than the positions of the support tube 44 and the extension tube 42 after folding.

In a preferred embodiment, the side connecting base 43 is an L-shaped connecting base, the longitudinal section of the L-shaped connecting base is hinged with the hinged part of the lower ends of the two short pipes 32, the upper surface of the transverse section of the L-shaped connecting base faces to the lower opening groove, and the other end of the telescopic pipe is embedded into the groove and riveted.

The upper fixing seat 12 shown in this embodiment is of an L-shaped structure, two end portions of the L-shaped structure are respectively riveted with the folding assemblies 7 of the side wall 3, the front wall 1 or the rear wall 2, and the middle portion of the L-shaped structure is fixed on the vertical pipe 12. The lower fixing seat 13 is provided with a plurality of connectors which are respectively riveted with a lower transverse pipe of the front wall, a supporting pipe of the bottom frame and a long pipe of the side wall.

In order to facilitate moving push-pull, a handle assembly 6 is arranged on the front wall 1, the handle assembly 6 comprises a handle 61, an upper pull pipe 62, a handle connecting seat 63, two handle bases 64 and two symmetrical lower pull pipes 65, one ends of the two lower pull pipes 64 are riveted with the lower side of the handle connecting seat 63, the other ends of the two lower pull pipes 64 are respectively riveted with one handle base 64, and each handle base 64 is riveted with the front side of one lower fixing seat 14; the handle 61 is arranged at the upper end of the upper pull tube 62, and the lower end of the upper pull tube 62 passes through the through hole of the handle connecting seat 64 and then is movably connected with the handle connecting seat 64 through an adjusting component.

As shown in fig. 8, a specific composition of the adjusting assembly is: the pipe plug 611 is embedded into the lower end of the upper pull pipe 62, the slope 68a is arranged in the sliding groove 611a, and the fixing pin 68 penetrates through a notch 62a at the lower end of the upper pull pipe 62 and a pin hole 63a on the handle connecting seat 63 in sequence; the push button 66 provided on the handle 61 is fixed to one end of a push rod 67 provided in the pull-up pipe 62, and the other end of the push rod 67 is in contact with the slope 68 a. When the handle assembly is used, the fixing pin 68 sequentially penetrates through the notch 62a at the lower end of the pull-up tube 62 and the pin hole 63a on the handle connecting seat 63, the whole pull-up tube 62 is positioned at the upper end of the handle connecting seat 63, and the handle assembly 6 is in an unfolded use state; when the frame is folded and gathered, the button 66 on the handle 61 is pressed in the lower end direction of the pull-up tube 62, the button 66 is pressed downwards to drive the ejector rod 67 to push the slope 68a, the slope 68a descends in the sliding groove 611a, the fixing pin 68 at the upper end of the slope 68a is driven to be separated from the pin hole 63a on the handle connecting seat 63, the limit locking relation between the pull-up tube 62 and the handle connecting seat 63 is released, the pull-up tube 62 is pushed downwards, the pull-up tube 62 passes through the handle connecting seat 63, the pull-up tube 62 moves towards the pull-down tube 65, and finally the storage state shown in fig. 4 is completed.

In one embodiment, a small spring 612 is disposed on the bottom surface of the slope 68a, when the pull-up tube 62 and the handle connecting seat 63 are adjusted from the folded state in which they are freely movable to the unfolded use state, the pull-up tube 62 is pulled up until the lower end enters the handle connecting seat 63, and the fixing pin 68 at the upper end of the slope 68a is ejected into the pin hole 63a of the handle connecting seat by the elastic return action of the spring, so that the lower end of the pull-up tube 62 and the handle connecting seat 63 are fixed in a limited manner.

The handle assembly 6 further comprises two sets of washers 69 and springs 610, the springs 610 are arranged in grooves of the washers 69, and rivets pass through the lower fixing seat 14, the washers 69, the springs 610 and the handle base 64 for riveting. The impact force received by the spring damping buffer handle component in the using process of the cart is combined with the gasket (made of elastic materials such as rubber gaskets), so that the shock resistance and the dynamic stability are enhanced.

When the folding bicycle frame is assembled, the whole front wall 1 or the rear wall 2 is assembled, then the rear wall 2 (specifically, the upper fixing seat 12 and the lower fixing seat 13) of the front wall 1 is completely assembled with the two side walls 3, the underframe 4 and the handle assembly 6, the roller 5 is detachably mounted at the bottom of the vertical pipe 12, the roller bracket 51 is arranged on the specific roller 5, and the axle 52 at the upper end of the roller bracket is embedded into the bottom of the vertical pipe 12 and is fixed through fasteners (such as screws or other fasteners) and the like.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. A gathering type folding trolley comprises a trolley frame, wherein the trolley frame comprises a front wall, a rear wall, a frame body consisting of two symmetrical side walls, an underframe at the bottom of the frame body and four rollers respectively arranged on two sides of the front wall and two sides of the rear wall; the upper end and the lower end of either side of the left side and the right side of the Y-shaped folding component are respectively riveted with the upper fixing seat and the lower fixing seat; the rear wall and the front wall are of the same structure;

the chassis comprises a central connecting seat, two telescopic pipes, two side connecting seats and four supporting pipes, wherein four corners of the central connecting seat are respectively riveted with one end of one supporting pipe, the other end of the supporting pipe is riveted with one lower fixing seat, the left side and the right side of the central connecting seat are respectively riveted with one end of one telescopic pipe, and the other end of each telescopic pipe is riveted with the side connecting seat;

the side wall comprises two side transverse pipes, two X-shaped connecting rods formed by cross riveting of long pipes and short pipes and a middle transverse pipe; the two X-shaped connecting rods are symmetrically arranged, the upper end of a short pipe of one X-shaped connecting rod is hinged with one end of a transverse pipe on one side, the lower end of the short pipe is hinged with the short pipe of the other X-shaped connecting rod, the hinged part of the short pipe and the short pipe is riveted with one side connecting seat, the upper end of a long pipe is hinged with one end of the transverse pipe in the middle, and the lower end of the long pipe is riveted with one lower fixing seat; the other end of the lateral transverse pipe is riveted with the upper fixing seat.

2. The gathering type folding trolley according to claim 1, wherein the Y-shaped folding assembly comprises two upper cross tubes, an upper connecting piece, two upper connecting pipes, a vertical pipe, a lower connecting piece and two lower connecting pipes, the upper connecting piece and the lower connecting piece are fixedly mounted at two ends of the vertical pipe respectively;

one ends of the two upper connecting pipes are symmetrically riveted on two sides of the upper connecting piece, the other ends of the two upper connecting pipes are respectively hinged with one ends of the two upper transverse pipes, and the other ends of the two upper transverse pipes are respectively riveted with one upper fixing seat;

one ends of the two lower connecting pipes are symmetrically riveted on two sides of the lower connecting piece, and the other ends of the two lower connecting pipes are riveted with the lower fixing seat.

3. The foldable trolley according to claim 2, wherein the Y-shaped folding assembly further comprises a set of gears engaged with each other, the gears have a plurality of teeth on one side and a plurality of teeth on the other side, the teeth are embedded in the fixing portion of the lower horizontal tube, the lower horizontal tube and the gears are embedded in the groove of the lower connecting member, and the lower horizontal tube and the fixing portion are riveted with the lower connecting member.

4. A foldable, collapsible cart according to claim 1, wherein said lower connector tube is longer than said upper connector tube.

5. The foldable handcart of claim 1, wherein the connection between the central connecting seat and the telescopic tube or the supporting tube in the bottom frame has an upward-concave mounting groove, and the telescopic tube or the supporting tube embedded in and riveted with the mounting groove can be turned over downwards relative to the mounting groove.

6. The gathering type folding handcart according to claim 1, wherein the side connecting seats are L-shaped connecting seats, the longitudinal sections of the L-shaped connecting seats are hinged with the hinged parts of the lower ends of the two short pipes, the upper surfaces of the transverse sections of the L-shaped connecting seats face to the lower opening groove, and the other ends of the telescopic pipes are embedded in the grooves and riveted.

7. The gathering type folding handcart according to claim 1 further comprising a handle assembly arranged on the front wall, wherein the handle assembly comprises a handle, an upper pull tube, a handle connecting seat, an adjusting assembly, two handle bases and two symmetrical lower pull tubes, one end of each of the two lower pull tubes is riveted with the lower side of the handle connecting seat, the other end of each of the two lower pull tubes is riveted with one handle base, and each handle base is riveted with one lower fixing seat; the handle is arranged at the upper end of the upper pull pipe, and the lower end of the upper pull pipe is movably connected with the handle connecting seat through the adjusting component.

8. The foldable trolley according to claim 7, wherein the handle assembly further comprises two washers and springs, the springs are disposed in grooves of the washers, and rivets are riveted through the lower fixing seat, the washers, the springs, and the handle base.

9. The gathering type folding handcart according to claim 7, wherein the adjusting assembly comprises a button, a mandril, a pipe plug with a sliding groove and a fixing pin with a slope at the lower end, the pipe plug is embedded into the lower end of the upper pull pipe, the slope is arranged in the sliding groove, and the fixing pin sequentially penetrates through a notch at the lower end of the upper pull pipe and a pin hole on the handle connecting seat; the button arranged on the handle is fixed with one end of the ejector rod arranged in the pull-up tube, and the other end of the ejector rod is in contact with the slope.

10. The foldable handcart of claim 1, wherein the lateral transverse tubes are hinged to the short tubes, the long tube is hinged to the middle transverse tube, and the two short tubes are hinged to each other through tube connectors;

the pipe connecting piece comprises two symmetrical hinged pieces, each hinged piece comprises a riveting part and an inserting part, the two riveting parts are riveted through rivets, and the inserting parts are inserted into the lateral transverse pipes or the short crossed pipes and are fixed through fasteners.

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