CN218750865U - Detachable portable folding handcart - Google Patents

Abstract

The utility model discloses a detachable portable folding trolley, which comprises a pushing handle and a trolley board module, wherein the trolley board module comprises a wheel mechanism and a trolley board; the number of the sweep modules is multiple, and the sweep of all the sweep modules is connected in sequence; in two adjacent vehicle plate modules, the front end of the vehicle plate of one vehicle plate module is detachably connected with the rear end of the vehicle plate of the other vehicle plate module; the rear end of the sweep of the last sweep module is detachably connected with a pushing handle; the wheel mechanism comprises a wheel mounting seat, a wheel and a wheel fixing assembly, the wheel is connected to one end of the wheel mounting seat in a rotating mode, the sweep is provided with a sliding rotating shaft, the other end of the wheel mounting seat is connected to the sliding rotating shaft in a rotating mode, and the wheel fixing assembly is connected with the sweep. The utility model discloses a portable folding handcart of formula of can assembling and disassembling can fold the wheel, reduces the high space that occupies, installs and removes the sweep according to actual conditions, neither can weaken the year thing ability of handcart, also can reduce the length space that the handcart occupy when depositing.

Description

Detachable portable folding handcart

Technical Field

The utility model relates to a manual vehicle, in particular to portable folding handcart of formula of can assembling and disassembling.

Background

The cart is a transport vehicle that is pushed and pulled manually. The trolley is widely applied in production and life, and can work in places where motor vehicles are inconvenient to use because of low manufacturing cost, simple maintenance, convenient operation and light dead weight, and is very convenient for carrying lighter objects in short distance.

When the trolley is not used, a certain space is needed for storing the trolley; the existing trolley can be folded or disassembled by a pushing handle, but the trolley still occupies a large space when being stored, particularly occupies a certain height space at the wheel part of the trolley, occupies a large length space when the sweep of the trolley is long, and can weaken the carrying capacity of the trolley if the length of the sweep of the trolley is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a portable folding handcart of formula of can assembling and disassembling can fold the wheel, reduces the high space that occupies, installs and removes the sweep according to actual conditions, neither can weaken the year thing ability of handcart, also can reduce the length space that the handcart occupy when depositing.

According to the utility model discloses portable folding handcart of formula of can assembling and disassembling, include: a pushing handle; the sweep module comprises a wheel mechanism and a sweep; the number of the sweep modules is multiple, and the sweeps of all the sweep modules are connected in sequence; in two adjacent vehicle plate modules, the front end of the vehicle plate of one vehicle plate module is detachably connected with the rear end of the vehicle plate of the other vehicle plate module; the rear end of the sweep of the last sweep module is detachably connected with the pushing handle; wheel mechanism includes the fixed subassembly of wheel mount pad, wheel and wheel, the wheeling is connected the one end of wheel mount pad, the sweep is provided with the slip pivot, the other end of wheel mount pad is rotated and is connected the slip pivot, the wheel mount pad is used for making the wheel is close to or keeps away from the sweep, the fixed subassembly of wheel is connected the sweep, the fixed subassembly of wheel is used for fixing the position of wheel mount pad.

According to the utility model discloses portable folding handcart of formula of can assembling and disassembling has following beneficial effect at least: the push handle is detachably connected with the trolley board, so that the push handle can be detached when the trolley is stored, the height of the trolley is reduced, and the occupied space of the trolley is reduced; the trolley is provided with a plurality of detachably connected trolley plates, and the trolley plates connected with the trolley can be increased or decreased according to actual needs, so that all goods are borne, the trolley is convenient to move, the trolley is convenient to store after being detached, the occupied space is reduced, and the trolley is convenient to carry and transport; the wheel mounting seat is rotationally connected with the sliding rotating shaft, so that the wheel mounting seat can be rotated; when the wheels are required to normally abut against the ground to assist the trolley to move, the wheel mounting seat rotates relative to the sliding rotating shaft, so that the wheels are positioned at the position farthest away from the trolley board, the wheels are in a vertical state at the moment, and the positions of the wheels are fixed by the wheel fixing assembly, so that the wheel mounting seat can not rotate or slide; when not needing wheel butt ground auxiliary handcart to remove, for example when depositing the handcart, can reduce the height of handcart, reduce the occupation space of handcart, still for example all connect other sweep around the sweep, can pack up the wheel, make things convenient for the handcart to remove, reduce unnecessary wheel wearing and tearing.

According to some embodiments of the present invention, the front end of the vehicle plate is provided with a first insertion block, the first insertion block is provided with an insertion hole extending in the left-right direction, the rear end of the vehicle plate is provided with a second insertion block, and the left end or the right end of the second insertion block is provided with an insertion rod extending in the left-right direction; in two adjacent vehicle panel modules, the insertion rod of the vehicle panel of the latter vehicle panel module is used for being inserted into the insertion hole of the vehicle panel of the former vehicle panel module.

According to some embodiments of the present invention, the vehicle plate module further comprises a bolt mechanism, the bolt mechanism is disposed on both the left side and the right side of the vehicle plate, the bolt mechanism comprises two pin insertion blocks and a bolt, the front end and the rear end of the side wall of the vehicle plate are fixedly connected with the pin insertion blocks, the pin insertion blocks are provided with connection through holes extending in the front-rear direction, one end of the bolt is inserted into the connection through hole at the front end of the side wall of the vehicle plate, and the other end of the bolt is inserted into the connection through hole at the rear end of the side wall of the vehicle plate; in two adjacent said bed modules, said pin of said bed of one of said bed modules is adapted to be inserted into said connecting through hole of said bed of the other of said bed modules.

According to some embodiments of the utility model, bolt mechanism still includes first fixed arch, first fixed arch sets up the middle part of sweep lateral wall, the middle part of bolt is provided with the fixed column, and first fixed arch is used for the butt and spacing the fixed column, the round pin inserted block is close to the one end at the middle part of sweep is provided with the fixed arch of second, the fixed arch of second is used for the butt and spacing the fixed column.

According to some embodiments of the present invention, a first connecting block is disposed at a front end of a lower portion of the pushing handle, the first connecting block is provided with a first connecting hole extending in a left-right direction, and the inserting rod of the sweep of the last sweep module is used for being inserted into the first connecting hole of the pushing handle; the left side wall and the right side wall of the lower portion of the pushing hand are both provided with second connecting blocks, the second connecting blocks are provided with second connecting holes extending in the front-back direction, and the last plug pin of the sweep is used for being inserted into the second connecting holes of the pushing hand.

According to some embodiments of the present invention, the wheel fixing assembly includes two positioning rings, the two positioning rings are respectively located at two sides of the wheel mounting seat; the bottom of the sweep is provided with a sliding strip and a limiting strip, the sliding strip is arranged above the sliding rotating shaft, the sliding strip is arranged at the front end and the rear end above the sliding rotating shaft, the limiting strip is arranged between the two sliding strips, the limiting strip is arranged in the middle above the sliding rotating shaft, and a rotating gap for rotating the positioning ring is arranged between the sliding strip and the limiting strip in a vacant way; when the positioning ring is positioned in the rotating notch and the limiting notch is far away from the vehicle plate, one side of the positioning ring is abutted against the sliding strip, and the other side of the positioning ring is abutted against the limiting strip; the wheel mount pad is kept away from the other end of wheel is provided with the constant head tank, the sliding strip is used for passing through constant head tank sliding connection the wheel mount pad, spacing not butt the wheel mount pad, the sliding strip is used for passing through spacing breach sliding connection the holding ring, spacing is used for passing through spacing breach sliding connection the holding ring.

According to some embodiments of the present invention, the counterweight structure is a counterweight protrusion.

According to some embodiments of the present invention, the wheel securing assembly further comprises a rotating buckle rotatably connected to the middle portion of the sweep, the rotating buckle being located below the sweep; when one side of the wheel mounting seat is abutted to the bottom surface of the vehicle plate, the rotating buckle is abutted to the other side of the wheel mounting seat.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of the entire assembly of a detachable portable foldable stroller according to an embodiment of the present invention;

FIG. 2 is an overall assembly view of the detachable portable folding cart of FIG. 1 from another perspective;

FIG. 3 is an exploded view of the push handle and one of the deck modules of the collapsible portable folding cart of FIG. 2;

FIG. 4 is a schematic view of the general assembly of the wheels of the deck module of the collapsible, portable, folding cart of FIG. 1 in an upright position;

FIG. 5 is a cross-sectional structural view of the bed module of FIG. 4;

FIG. 6 is a schematic view of the general assembly of the wheels of the deck module of the collapsible, portable, folding cart of FIG. 1 in a stowed position;

fig. 7 is an overall assembly view of the deck module of the collapsible portable folding cart of fig. 1 with the latch and portions of the wheel mechanism removed.

Reference numerals:

the push handle 1000, the first connecting block 1100, the first connecting hole 1110, the second connecting block 1200 and the second connecting hole 1210;

a vehicle panel module 2000;

the bicycle plate 2100, the first inserting block 2110, the inserting hole 2111, the second inserting block 2120, the inserting rod 2121, the sliding strip 2130, the limiting strip 2140, the rotating notch 2150 and the sliding rotating shaft 2160;

the wheel mechanism 2200, the wheel mounting base 2210, the positioning groove 2211, the wheel 2220, the positioning ring 2230, the spacing notch 2231, the counterweight protrusion 2232, the weight-reducing through groove 2233 and the rotating buckle 2240;

the locking device comprises a latch mechanism 2300, a pin insert 2310, a connecting through hole 2311, a second fixing protrusion 2312, a latch 2320, a fixing column 2321 and a first fixing protrusion 2330.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the positional or orientational descriptions, such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "tip", "inner", "outer", "axial", "radial", "circumferential", etc., are the positional or orientational relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, the side wall means the left side wall and/or the right side wall.

In the description of the present invention, "a plurality" means two or more, "more than", "less than", "more than" and the like are understood as excluding the number, "more than", "below", "within" and the like are understood as including the number. If the description of "first" and "second" is used for the purpose of distinguishing technical features, the description is not intended to indicate or imply relative importance or to implicitly indicate the number of the indicated technical features or to implicitly indicate the precedence of the indicated technical features.

In the description of the present invention, it should be understood that "a is disposed on B" and "a is disposed on B" represent the connection relationship or the positional relationship between a and B, and do not mean that a is necessarily above B.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, a movable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. "bolted" and "screwed" are equally interchangeable. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.

It should be understood that the similar features in the present invention are only distinguished by different prefixes, and therefore, in the present invention, the combination of similar features in this category is expressed by the feature name without a prefix (or the feature name with a partial prefix).

Referring to fig. 1, 2 and 3, a detachable portable folding cart (or simply, a trolley) according to an embodiment of the present invention includes a pushing handle 1000 and a board module 2000.

The pushing handle 1000 is a structure that can be grasped and pushed by a human hand, and has a certain height. The pushing handle 1000 is detachably connected with the cart board 2100, so that the pushing handle 1000 can be detached when the cart is stored, the height of the cart is reduced, and the occupied space of the cart is reduced.

The bed module 2000 includes a wheel mechanism 2200 and a bed 2100. The cart board 2100 is a main body of the cart, and the cart board 2100 is provided with a top for carrying objects and a bottom for mounting wheels 2220.

A plurality of the board modules 2000 are provided, and the boards 2100 of all the board modules 2000 are connected in sequence; in two adjacent bed modules 2000, the front end of the bed 2100 of one bed module 2000 is removably coupled to the rear end of the bed 2100 of another bed module 2000, and the rear end of the bed 2100 of the last bed module 2000 is removably coupled to the pusher 1000. The handcart has a plurality of sweep 2100 that can dismantle the connection, can increase or reduce sweep 2100 that connects on the handcart according to actual need to guarantee to bear all goods, conveniently remove, and conveniently dismantle the back storage, reduce occupation space, conveniently carry, transport.

The wheel mechanism 2200 includes a wheel mount 2210, a wheel 2220, and a wheel fixing assembly, the wheel 2220 is rotatably coupled to one end of the wheel mount 2210, the board 2100 is provided with a sliding rotation shaft 2160, the other end of the wheel mount 2210 is rotatably coupled to the sliding rotation shaft 2160, the wheel mount 2210 is used to move the wheel 2220 closer to or away from the board 2100, the wheel fixing assembly is coupled to the board 2100, and the wheel fixing assembly is used to fix the position of the wheel mount 2210 (after the wheel 2220 is closer to or away from the board 2100). The wheel mount 2210 is rotatably coupled to the sliding shaft 2160 to rotate the wheel mount 2210; when the wheel 2220 is required to normally abut against the ground to assist the movement of the cart, the wheel mounting 2210 rotates relative to the sliding shaft 2160 so that the wheel 2220 is located at a position farthest from the board 2100, at this time, the wheel 2220 is in a vertical state, and the position of the wheel 2220 is fixed by the wheel fixing assembly so that the wheel mounting 2210 can neither rotate nor slide; when the wheels 2220 are not required to abut against the ground to assist the trolley in moving, such as when the trolley is stored, the height of the trolley can be reduced, the occupied space of the trolley is reduced, and when the front and the rear of the trolley board 2100 are connected with other trolley boards 2100 (at the moment, the wheels 2220 can be put down), the wheels 2220 (or the folding wheels 2220) can be retracted, the trolley can be moved conveniently, and unnecessary wear of the wheels 2220 is reduced.

Referring to fig. 1, 2 and 3, in some embodiments of the present invention, a first insert 2110 is disposed at a front end of the vehicle board 2100, the first insert 2110 is provided with an insertion hole 2111 extending in a left-right direction, a second insert 2120 is disposed at a rear end of the vehicle board 2100, and an insertion rod 2121 extending in the left-right direction is disposed at a left end or a right end of the second insert 2120; in two adjacent vehicle panel modules 2000, the insert stem 2121 of the vehicle panel 2100 of the subsequent vehicle panel module 2000 is adapted to be inserted into the insert hole 2111 of the vehicle panel 2100 of the previous vehicle panel module 2000.

The insertion block is provided to allow a connection structure (the insertion hole 2111 and the insertion rod 2121) between the vehicle panels 2100 to have a certain distance from the vehicle panels 2100, so that two adjacent vehicle panels 2100 can be disassembled and assembled, and when the two vehicle panels 2100 are not disassembled and assembled, the two vehicle panels 2100 can rotate relative to each other because the insertion rod 2121 and the insertion hole 2111 are connected between the two vehicle panels 2100, so that the two vehicle panels 2100 can be folded after being rotated, and the storage is more convenient. In addition, when the trolley is used, all the wheels 2220 are put down, the trolley board 2100 can rise and fall, and the trolley can be conveniently pushed to cross the concave-convex ground terrain.

Referring to fig. 2 and 6, in some embodiments of the present invention, the board module 2000 further includes a latch mechanism 2300, the left side and the right side of the board 2100 are both provided with the latch mechanism 2300, the latch mechanism 2300 includes two pin inserts 2310 and a latch 2320, the front end and the rear end of the side wall (left side and right side) of the board 2100 are both fixedly connected with the pin inserts 2310, the pin inserts 2310 are provided with connecting through holes 2311 extending along the front and rear direction, one end of the latch 2320 is inserted into the connecting through hole 2311 of the front end of the side wall (left side and right side) of the board 2100, and the other end of the latch 2320 is inserted into the connecting through hole 2311 of the rear end of the side wall (left side and right side) of the board 2100; in the adjacent two vehicle panel modules 2000, the latch 2320 of the vehicle panel 2100 of one of the vehicle panel modules 2000 is used to be inserted into the coupling through-hole 2311 of the vehicle panel 2100 of the other vehicle panel module 2000.

The bolt mechanism 2300 is arranged for connection, so that on one hand, the connection between the front and rear vehicle boards 2100 can be further reinforced, and the connection between the front and rear vehicle boards is prevented from being separated; on the other hand, the two vehicle plates 2100 may not rotate relative to each other after the connection of the latch 2320, so that the loading of the vehicle plates 2100 is more stable, and the wheels 2220 of the middle vehicle plate module 2000 may be retracted at this time, thereby reducing wear and facilitating the movement of the cart. It should be understood that the latch 2320 may be inserted into the connecting through hole 2311 of the rear vehicle panel 2100 or the latch 2320 may be inserted into the connecting through hole 2311 of the front vehicle panel 2100 according to actual conditions.

Referring to fig. 4, 6 and 7, in some embodiments of the present invention, the latch mechanism 2300 further includes a first fixing protrusion 2330, the first fixing protrusion 2330 is disposed in the middle of the sidewall of the vehicle panel 2100 (left side and right side), the middle of the latch 2320 is provided with a fixing column 2321, the first fixing protrusion 2330 is used for abutting and limiting the fixing column 2321, one end of the pin plug 2310 near the middle of the vehicle panel 2100 is provided with a second fixing protrusion 2312, and the second fixing protrusion 2312 is used for abutting and limiting the fixing column 2321.

The first fixing protrusion 2330 is provided to fix the latch 2320 at an intermediate position of the board 2100, so that the latch 2320 is received in the coupling through-hole 2311 when the cart is stored, thereby reducing the occupied space of the board 2100. The second fixing protrusion 2312 is provided to fix the position of the latch 2320 after the latch 2320 is inserted into the front coupling through-hole 2311 or the rear coupling through-hole 2311, so that the coupling is more secure. It should be understood that other ways to fix the position of the bolt 2320 may be used, for example, the bolt 2320 fixing column 2321 is provided with a bolt through hole, and the vehicle plate 2100 is provided with a bolt hole, and is fixed by a bolt.

Referring to fig. 2 and 3, in some embodiments of the present invention, a first connection block 1100 is disposed at a front end of a lower portion of the pushing handle 1000, the first connection block 1100 is provided with a first connection hole 1110 extending in a left-right direction, and the insertion rod 2121 of the board 2100 of the last board module 2000 is configured to be inserted into the first connection hole 1110 of the pushing handle 1000; the left side wall and the right side wall of the lower portion of the pushing handle 1000 are both provided with a second connecting block 1200, the second connecting block 1200 is provided with a second connecting hole 1210 extending in the front-rear direction, and the latch 2320 of the board 2100 of the last board module 2000 is used for being inserted into the second connecting hole 1210 of the pushing handle 1000.

The pushing handle 1000 and the cart board 2100 are connected through the inserting rod 2121 and the second connecting hole, and before the inserting pin 2320 is not inserted into the second connecting hole 1210, the pushing handle 1000 can rotate and abut against the cart board 2100, so that the cart can be folded and stored conveniently; when the cart is used, the latch 2320 may be inserted into the second connection hole 1210 to fix the position of the handle 1000.

Referring to fig. 3 to 7, in some embodiments of the present invention, the wheel fixing assembly includes a positioning ring 2230, the positioning ring 2230 is slidably connected to the sliding shaft 2160, a position-limiting notch 2231 is disposed outside the positioning ring 2230, the positioning ring 2230 is provided with a weight-reducing through-slot 2233, the weight-reducing through-slot 2233 is disposed close to the position-limiting notch 2231 (the weight-reducing through-slot 2233 is closer to the position-limiting notch 2231 relative to the weight-reducing through-slot 2233), the weight-reducing through-slot 2233 is disposed away from the position-limiting notch 2231, the positioning rings 2230 are two, and the two positioning rings 2230 are disposed on two sides of the wheel mount 2210 respectively; the bottom of the vehicle board 2100 is provided with a sliding strip 2130 and a limiting strip 2140, the sliding strip 2130 is arranged above the sliding rotating shaft 2160, the front end and the rear end above the sliding rotating shaft 2160 are respectively provided with one sliding strip 2130, the limiting strip 2140 is arranged between the two sliding strips 2130, the limiting strip 2140 is arranged in the middle above the sliding rotating shaft 2160, and a rotating notch 2150 for the positioning ring 2230 to rotate is arranged between the sliding strip 2130 and the limiting strip 2140 in a vacant way; when the positioning ring 2230 is located in the rotation notch 2150 and the position-limiting notch 2231 is far away from the board 2100, one side of the positioning ring 2230 abuts against the sliding bar 2130, and the other side of the positioning ring 2230 abuts against the position-limiting bar 2140; the other end of the wheel mounting 2210, which is far away from the wheel 2220, is provided with a positioning groove 2211, a sliding bar 2130 is used for being connected with the wheel mounting 2210 in a sliding way through the positioning groove 2211, a limit bar 2140 is not abutted against the wheel mounting 2210, the sliding bar 2130 is used for being connected with the positioning ring 2230 in a sliding way through the limit notch 2231, and the limit bar 2140 is used for being connected with the positioning ring 2230 in a sliding way through the limit notch 2231.

The wheel mechanism 2200 (primarily the wheels 2220) may be configured to be fixed to the front of the deck 2100, to the rear of the deck 2100, or to retract the wheels 2220, depending on the situation. The wheel mount 2210 may slide back and forth along a sliding shaft 2160; when the wheel mounting 2210 slides to the front part or the rear part of the sliding rotating shaft 2160, the sliding strip 2130 at the bottom of the vehicle board 2100 is embedded into the positioning groove 2211 of the wheel mounting 2210, so that the sliding strip 2130 is in sliding connection with the wheel mounting 2210, and the sliding strip 2130 has a limiting effect on the wheel mounting 2210 and prevents the wheel mounting 2210 from rotating relative to the sliding rotating shaft 2160; when the wheel mounting 2210 is slid to the middle of the sliding shaft 2160, the wheel mounting 2210 can be rotated relative to the sliding shaft 2160, so that the wheel mounting 2210 and the wheel 2220 can be rotated to abut against the bottom surface of the vehicle board 2100 to stow (or fold) the wheel mechanism 2200, because the position-limiting strip 2140 does not abut against the wheel mounting 2210 (the protruding height of the position-limiting strip 2140 is lower than the protruding height of the sliding strip 2130, although the sliding strip 2130 can be inserted into the positioning groove 2211 of the wheel mounting 2210, the position-limiting strip 2140 will not be inserted into the positioning groove 2211, so the position-limiting strip 2140 will not block the wheel mounting 2210 from rotating.

The arrangement of the sliding strip 2130, the limiting strip 2140 and the positioning groove 2211 can enable the wheel 2220 to keep a vertical state, and enable the wheel 2220 to be retracted; the positioning ring 2230, the position-limiting notch 2231, the rotation notch 2150, and the counterweight structure are provided, so that the positioning ring 2230 can limit the front and rear sliding of the wheel 2220 along the sliding shaft 2160, and particularly, when the wheel 2220 is in an upright state and is located at a position near the front or rear of the board 2100, the position of the wheel 2220 needs to be fixed. When the positioning ring 2230 is located in the rotating notch 2150, due to the arrangement of the counterweight structure and the weight-reducing through groove 2233, under the action of gravity, the positioning ring 2230 automatically rotates relative to the sliding shaft 2160, so that the counterweight structure is located below, that is, the limiting notch 2231 of the positioning ring 2230 is located below, at this time, because the outer diameter of the positioning ring 2230 is large, the end surfaces of the sliding strip 2130 and the limiting strip 2140 on the two sides of the rotating notch 2150 abut against the limiting positioning ring 2230, so that the positioning ring 2230 cannot slide back and forth along the sliding shaft 2160, and the wheel mounting seat abuts against the positioning ring 2210 2230, so that the wheel mounting seat 2210 cannot slide back and forth along the sliding shaft 2160, thereby fixing the front and rear positions of the wheel 2220; when it is desired to move the wheel 2220, the positioning ring 2230 is manually rotated so that the position-limiting notch 2231 is located at the top, and the position-limiting notch 2231 is slidably connected to the sliding bar 2130 and the position-limiting bar 2140, so that the front and rear positions of the positioning ring 2230, and thus the wheel mount 2210 and the wheel 2220, can be moved.

Referring to fig. 3 and 4, in some embodiments of the invention, the counterweight structure is a counterweight protrusion 2232.

The counterweight structure may be determined by material properties, such as a denser material at the counterweight structure, e.g., the positioning ring 2230 is made of plastic in other areas, and a steel material at the counterweight structure of the positioning ring 2230; the weight structure can also be determined by the structural characteristics, such as the weight protrusion 2232 in this embodiment, which is heavier here because the weight protrusion 2232 is provided, which is equivalent to more than one piece here than elsewhere.

Referring to fig. 6, in some embodiments of the present invention, the wheel securing assembly further includes a rotating buckle 2240, the rotating buckle 2240 is rotatably connected to the middle portion of the platform 2100, and the rotating buckle 2240 is located below the platform 2100; when one side (approach) of the wheel mount 2210 abuts the bottom surface of the floor 2100, the turn buckle 2240 abuts the other side of the wheel mount 2210.

After the wheels 2220 are retracted, the wheels can be fixed by the rotating buckle 2240; specifically, before the wheel 2220 is retracted, the rotating buckle 2240 is rotated toward a side away from the wheel 2220, so that the rotating buckle 2240 abuts against the platform 2100, thereby leaving a space for the wheel 2220 to retract, and after the wheel 2220 is retracted, the rotating buckle 2240 is rotated in the reverse direction, so that the rotating buckle 2240 is fitted over the wheel mounting base 2210, and the rotating buckle 2240 abuts against the other side of the wheel mounting base 2210, thereby fixing the position of the wheel 2220.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (8)

1. A collapsible portable folding cart, comprising:

a pushing handle;

the sweep module comprises a wheel mechanism and a sweep;

the number of the sweep modules is multiple, and the sweeps of all the sweep modules are connected in sequence; in two adjacent vehicle plate modules, the front end of the vehicle plate of one vehicle plate module is detachably connected with the rear end of the vehicle plate of the other vehicle plate module; the rear end of the sweep of the last sweep module is detachably connected with the pushing handle;

the wheel mechanism includes wheel mount pad, wheel and the fixed subassembly of wheel, the wheel rotates to be connected the one end of wheel mount pad, the sweep is provided with the slip pivot, the other end of wheel mount pad rotates to be connected the slip pivot, the wheel mount pad is used for making the wheel is close to or keeps away from the sweep, the fixed subassembly of wheel is connected the sweep, the fixed subassembly of wheel is used for fixing the position of wheel mount pad.

2. The foldable, portable cart of claim 1, wherein the front end of the cart board is provided with a first insert, the first insert is provided with an insertion hole extending in the left-right direction, the rear end of the cart board is provided with a second insert, and the left end or the right end of the second insert is provided with an insertion rod extending in the left-right direction; in two adjacent vehicle panel modules, the insertion rod of the vehicle panel of the latter vehicle panel module is used for being inserted into the insertion hole of the vehicle panel of the former vehicle panel module.

3. The foldable, portable cart of claim 2, wherein the deck module further comprises a latch mechanism, the latch mechanism is disposed on each of the left and right sides of the deck, the latch mechanism comprises two pin-in blocks and a latch, the pin-in blocks are fixedly connected to each of the front and rear ends of the side walls of the deck, the pin-in blocks are provided with connection through holes extending in the front-rear direction, one end of the latch is inserted into the connection through hole at the front end of the side wall of the deck, and the other end of the latch is inserted into the connection through hole at the rear end of the side wall of the deck; in two adjacent said bed modules, said pin of said bed of one of said bed modules is adapted to be inserted into said connecting through hole of said bed of the other of said bed modules.

4. The foldable portable cart of claim 3, wherein the latch mechanism further comprises a first protrusion disposed at the middle of the side wall of the cart board, the latch has a fixed post at the middle for abutting against and restraining the fixed post, the latch has a second protrusion at the end of the latch near the middle of the cart board for abutting against and restraining the fixed post.

5. A foldable, portable, collapsible cart as recited in claim 3 wherein a first connector block is provided at a front end of a lower portion of said pushing handle, said first connector block being provided with a first connector hole extending in a left-right direction, said insert rod of said deck of a last of said deck modules being adapted to be inserted into said first connector hole of said pushing handle; the left side wall and the right side wall of the lower portion of the pushing hand are both provided with second connecting blocks, the second connecting blocks are provided with second connecting holes extending in the front-back direction, and the last plug pin of the sweep is used for being inserted into the second connecting holes of the pushing hand.

6. The portable, collapsible cart of claim 1, wherein said wheel securing assembly includes a retaining ring, said retaining ring slidably engaging said sliding spindle, said retaining ring having a retaining notch disposed on an outer side of said retaining ring, said retaining ring having a counterweight structure, said retaining ring having a weight-reducing channel, said counterweight structure being disposed adjacent said retaining notch relative to said weight-reducing channel, said retaining ring having two, said two retaining rings being disposed on opposite sides of said wheel mounting base; the bottom of the sweep is provided with a sliding strip and a limiting strip, the sliding strip is arranged above the sliding rotating shaft, the sliding strip is arranged at the front end and the rear end above the sliding rotating shaft, the limiting strip is arranged between the two sliding strips, the limiting strip is arranged in the middle above the sliding rotating shaft, and a rotating gap for rotating the positioning ring is arranged between the sliding strip and the limiting strip in a vacant way; when the positioning ring is positioned in the rotating notch and the limiting notch is far away from the vehicle plate, one side of the positioning ring is abutted against the sliding strip, and the other side of the positioning ring is abutted against the limiting strip; the wheel mount pad is kept away from the other end of wheel is provided with the constant head tank, the sliding strip is used for passing through constant head tank sliding connection the wheel mount pad, spacing not butt the wheel mount pad, the sliding strip is used for passing through spacing breach sliding connection the holding ring, spacing be used for passing through spacing breach sliding connection the holding ring.

7. A collapsible portable folding cart according to claim 6 wherein said counterweight structure is a counterweight protrusion.

8. The portable, collapsible cart of claim 6, wherein said wheel securing assembly further comprises a swivel buckle pivotally connected to a middle portion of said deck, said swivel buckle located below said deck; when one side of the wheel mounting seat is abutted to the bottom surface of the vehicle plate, the rotating buckle is abutted to the other side of the wheel mounting seat.

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