CN218287777U

CN218287777U - Folding handcart

Info

Publication number: CN218287777U
Application number: CN202222043341.XU
Authority: CN
Inventors: 林翰
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-04
Filing date: 2022-08-04
Publication date: 2023-01-13
Anticipated expiration: 2032-08-04

Abstract

The utility model provides a folding handcart, which comprises a frame structure and a frame structure arranged on the frame structure, wherein the frame structure comprises a front frame structure, the front frame structure comprises two front frame horizontal folding rods with folding joints in the middle, a front frame vertical rod and two front frame diagonal rods, and the two front frame horizontal folding rods are respectively rotatably connected with two side rods through a common fixing piece or an expansion fixing piece; the upper end and the lower end of the front frame upright rod are respectively connected with a folding joint; the front frame vertical rod is provided with a sliding sleeve which can slide along the length direction of the front frame vertical rod, one end of each front frame diagonal draw bar is hinged with the sliding sleeve, and one end of each front frame diagonal draw bar is hinged with the two foldable sides of the front frame horizontal rod or the two ends of the side rods respectively. The utility model forms a triangular supporting structure in the unfolding state by arranging the front frame diagonal draw bar and the front frame horizontal folding bar, so that the manufacturing state is more stable; the front frame is connected through the sliding sleeve, the diagonal draw bar drives the front frame to move, the folding process is simple and quick, the folding structure is small, and the carrying and the transportation are more convenient.

Description

Folding handcart

Technical Field

The utility model belongs to the technical field of the handcart, especially, relate to a folding handcart.

Background

The handcart is a convenient short-distance transport tool driven by manpower to push and pull, and the handcart develops a foldable structure gradually for the convenience of storage.

The chinese patent with the existing publication number CN209700727U discloses a folding handcart, which comprises: the trolley comprises a pull rod assembly, a front support, a rear support, an underframe folding assembly, a side frame folding assembly and a roller set, wherein one end of the underframe folding assembly is hinged to the bottom of the front support, the other end of the underframe folding assembly is hinged to the bottom of the rear support, the side frame folding assembly is connected to the two sides of the front support and the rear support, the roller set is respectively connected with the bottoms of the front support and the rear support, the pull rod assembly is connected with the front support, the trolley is plate-shaped in a folded state, and the trolley is cuboid in an unfolded state. The above solution has the following drawbacks: 1. the folded plate-shaped folding bag is plate-shaped, occupies large space, is relatively troublesome in folding process, and is inconvenient to store and carry when people go out; 2. the cart does not have the function of extending external components such as other hand trailers, shelves, etc., and is limited in carrying capacity.

SUMMERY OF THE UTILITY MODEL

To the defect of above-mentioned prior art, an object of the utility model is to provide a folding handcart sets up the sliding sleeve and connects preceding frame diagonal draw bar and drive its motion for folding process convenient and fast, folding back occupation space is little.

In order to achieve the above purpose, the utility model provides a folding handcart, which comprises a frame structure and a frame body structure arranged on the frame structure, wherein the frame structure comprises four side rods arranged in an array, the frame body structure comprises a front frame structure, a rear frame structure, symmetrical side frame structures and a bottom frame structure,

the front frame structure comprises two front frame horizontal folding rods with folding joints in the middle, a front frame vertical rod and two front frame diagonal rods, wherein the two front frame horizontal folding rods are rotatably connected with the two side rods through a common fixing piece or an expansion fixing piece respectively; the upper end and the lower end of the front frame upright rod are respectively connected with a folding joint; the front frame upright stanchion is provided with a sliding sleeve which can slide along the length direction of the front frame upright stanchion, one end of the two front frame diagonal draw bars is hinged with the sliding sleeve, and one end of the two front frame diagonal draw bars is respectively hinged with the two foldable sides of the front frame horizontal pole or the two ends of the side pole;

when the handcart is unfolded, the front frame diagonal draw bar and the front frame horizontal folding bar form a triangular support structure; when the handcart is folded, the two front frame horizontal folding rods are folded, the front frame vertical rod moves vertically upwards, the sliding sleeve slides along the front frame vertical rod, and the front frame diagonal draw bar is drawn close to the front frame vertical rod.

Preferably, the following steps: at least one group of edge rods positioned on the same plane is provided with an expansion assembly suitable for being connected with an external assembly, and the external assembly at least comprises one group of external edge rods correspondingly arranged;

the expansion assembly comprises a first connecting piece and a second connecting piece, wherein the first connecting piece is installed on the side rod, the second connecting piece is installed on the outer side rod, and the first connecting piece and the second connecting piece are detachably connected.

And/or, the outside pole is connected with the exterior structure, and the extension subassembly still includes the extension mounting that sets up in the upper and lower both ends of limit pole/outside limit pole, and the extension mounting is suitable for connecting frame structure and exterior structure for this folding handcart and exterior subassembly form the integrative structure of sharing limit pole/outside limit pole.

Preferably, the method comprises the following steps: the external components include other carts, such as those of the same or similar construction as the folding cart, expansion shelves, and the like.

Preferably, the method comprises the following steps: the first connecting piece is connected with the second connecting piece in a plug bush mode, and the first connecting piece and/or the second connecting piece are/is/are provided with limiting pieces penetrating through at least one side in the radial direction so as to limit the first connecting piece and the second connecting piece to be separated from each other.

Preferably, the following steps: the first connecting piece comprises an inserting groove arranged along the axial direction, the second connecting piece comprises a bolt and a connecting part suitable for connecting the bolt to the outer side rod, and when the bolt is matched with the inserting groove in an inserting mode, the connecting part is abutted to the top end of the inserting groove.

Preferably, the method comprises the following steps: the upper end of the front frame upright stanchion is connected with a pull rope which is suitable for driving the front frame upright stanchion to move upwards.

Preferably, the following steps: the rear frame structure comprises two rear frame horizontal rods and a rear frame X-shaped connecting rod structure at least comprising a set of rear frame X-shaped connecting rod units, each rear frame X-shaped connecting rod unit comprises two rear frame diagonal rods which are arranged in a crossed mode, the top end of each rear frame X-shaped connecting rod structure is respectively connected with the side rods in a rotatable mode through the rear frame horizontal rods, and the bottom end of each rear frame X-shaped connecting rod structure is connected with the side rods in a rotatable mode through general fixing pieces or expansion fixing pieces.

Preferably, the method comprises the following steps: the rear frame structure is connected with a pull rod structure, and the X-shaped connecting rod structure of the rear frame is provided with a limiting clamping groove suitable for fixing the pull rod structure towards the pull rod structure.

Preferably, the method comprises the following steps: the pull rod structure comprises a pull rod handle, a middle pull rod, two side pull rods and a pull rod connecting seat, wherein the pull rod handle is installed at the upper end of the middle pull rod, the middle pull rod is connected with the pull rod connecting seat in a sliding mode, the upper ends of the two side pull rods are symmetrically arranged on the two sides of the middle pull rod and hinged to the pull rod connecting seat, and the lower ends of the two side pull rods are respectively connected with the lower end of the side rod in a rotating mode through a common fixing seat. When the handcart is folded, the middle pull rod can be clamped in the limiting clamping groove, so that the whole structure is more compact and stable after folding.

Preferably, the following steps: the rear frame X-shaped connecting rod structure comprises odd-number groups of rear frame X-shaped connecting rod units, and the limiting clamping grooves are arranged at the cross points of the rear frame X-shaped connecting rod units in the middle.

Preferably, the following steps: the side frame structure comprises two side frame horizontal rods and a side frame connecting rod structure at least comprising a group of side frame X-shaped connecting rod units, each side frame connecting rod unit comprises two side frame diagonal rods which are arranged in a crossed mode, the top end of each side frame X-shaped connecting rod mechanism is rotatably connected with the side rods through the corresponding side frame horizontal rods, and the bottom end of each side frame X-shaped connecting rod mechanism is rotatably connected with the corresponding side rods through a common fixing piece or an expansion fixing piece.

Preferably, the following steps: the bottom frame structure comprises a rotating hub and four bottom rods which are rotatably connected to the rotating hub, and the other ends of the bottom rods are rotatably connected with the four side rods through common fixing pieces or expansion fixing pieces.

Preferably, the method comprises the following steps: the frame structure and the frame structure form the frame of the folding handcart, and a handcart cloth sleeve bag with an upper end opening is detachably arranged on the frame.

The beneficial effects of the utility model are that:

(1) The front frame diagonal draw bar and the front frame horizontal folding bar are arranged to form a triangular support structure in an unfolded state, so that the manufactured state is more stable; the sliding sleeve is arranged to connect the front frame and the diagonal draw bar to drive the front frame and the diagonal draw bar to move, the folding process is simple and quick, the folding process is small, the space occupancy rate is low, and the carrying and the transportation are more convenient.

(2) By providing an expansion assembly to connect external components such as another folding cart or a shelf, the transport capacity of the folding cart is expanded, allowing for enhanced transport capabilities under single person control.

(3) Can dismantle the first connecting piece and the second connecting piece of connection through the setting for easy dismounting between this folding handcart and the external component makes the user can select according to the demand is nimble, and easy operation is applicable to multiple transportation scene.

(4) Through setting up the extension mounting for thereby this folding handcart and a set of limit pole of external component sharing or outside limit pole form a body structure, and the wholeness is better, and during the user push-and-pull, this handcart and external component can remain stable better, and user control feels better with experience.

Drawings

Fig. 1 is a schematic view of a folding cart in embodiment 1.

Fig. 2 is a schematic structural view of the vehicle frame in embodiment 1.

Fig. 3 is a schematic view of the foldable trolley of embodiment 1 with another foldable trolley.

Fig. 4 is an enlarged schematic view of the area a in fig. 3.

Fig. 5 is a schematic view showing a folded state of the foldable cart in embodiment 1.

Fig. 6 is a schematic view showing the structure of a shelf attached to a foldable handcart in embodiment 1.

Fig. 7 is a schematic view of the foldable trolley of embodiment 2 with another foldable trolley.

Fig. 8 is a schematic structural view of the vehicle frame in embodiment 2.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention is described in detail with reference to the accompanying drawings and specific embodiments.

It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the aspects of the present invention are shown in the drawings, and other details not relevant to the present invention are omitted.

In addition, it should be further noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Example 1

As shown in fig. 1-6, a foldable handcart comprises a frame structure formed by four side rods 101 arranged in an array and a frame body structure arranged on the frame structure, wherein the frame body structure comprises a front frame structure, a rear frame structure, a symmetrical side frame structure and a bottom frame structure, the frame structure and the frame body structure form a frame of the foldable handcart, and a handcart cloth sleeve bag 102 with an upper opening is detachably arranged on the frame.

The front frame structure comprises two front frame horizontal folding rods 105 with folding joints 104 in the middle, a front frame upright rod 106 and two front frame diagonal draw rods 107, wherein the two front frame horizontal folding rods 105 are respectively rotatably connected with the two side rods 101 through common fixing pieces; the upper end and the lower end of the front frame upright stanchion 106 are respectively connected with the folding joint 104; a sliding sleeve 108 capable of sliding along the length direction of the front frame upright stanchion 106 is arranged on the front frame upright stanchion, one end of the two front frame diagonal draw bars 107 is hinged with the sliding sleeve 108, and one end of the two front frame diagonal draw bars 107 is hinged with the side bar 101 through a lower fixing piece 121 respectively; the upper end of the front frame upright 106 is connected with a pull rope 109 which is suitable for driving the front frame upright to move upwards.

When the foldable handcart is unfolded, the front frame diagonal draw bar 107 and the front frame horizontal folding bar 105 form a triangular support structure; as shown in fig. 5, when the foldable stroller is folded, the two front frame horizontal folding rods 105 are folded in half, the front frame vertical rods 106 move vertically upward, the sliding sleeve 108 slides downward along the front frame vertical rods 107, and the front frame diagonal rods 107 are drawn toward the front frame vertical rods 106.

In this embodiment, the two side rods 101 on the plane of the front frame structure are provided with the expansion assembly 300, the expansion assembly 300 is connected with another small-size foldable trolley 200, and the small-size foldable trolley 200 comprises a set of external side rods 201 correspondingly arranged; the expansion assembly comprises a first connecting piece 301 arranged on the side rod 101 and a second connecting piece 302 arranged on the outer side rod 201, and the first connecting piece 301 and the second connecting piece 302 are detachably connected.

In this embodiment, the first connecting member 301 and the second connecting member 302 are detachably connected to the side rod 101 and the external side rod 201, respectively, so that the foldable stroller can be kept regular after being folded, and meanwhile, the expansion assembly 300 is prevented from being easily broken due to the protruding arrangement thereof, the first connecting member 301 includes an insertion groove 303 disposed along the axial direction, the second connecting member 302 includes a plug 304 and a connecting portion 305 adapted to connect the plug 304 to the external side rod 201, when the plug 304 is inserted into the insertion groove 303, the connecting portion 305 abuts against the top end of the insertion groove 303, the lower end of the plug 304 penetrates through the insertion groove 303, and the lower end of the plug 303 is provided with a limiting member 306 along one radial direction, so as to limit the first connecting member 301 and the second connecting member 302 from being separated from each other due to environmental influences such as vibration.

In this embodiment, the upper and lower ends of the side bar 101 are provided with general fixing members for connecting the frame structures, and the general fixing members include an upper fixing member 103 disposed at the top end of the side bar 101 and a lower fixing member 121 disposed at the bottom end of the side bar 101.

In this embodiment, the rear frame structure includes two rear frame horizontal rods 110 and a rear frame X-shaped connecting rod structure including a set of rear frame X-shaped connecting rod units, the rear frame X-shaped connecting rod units include two rear frame diagonal draw bars 111 that are arranged in a crossing manner, the top ends of the rear frame diagonal draw bars 111 are respectively rotatably connected with the side rods 101 through the rear frame horizontal rods 110, and the bottom ends of the rear frame diagonal draw bars 111 are rotatably connected with the side rods 101 through the lower fixing members 121.

In this embodiment, the side frame structure includes two side frame horizontal rods 113 and a side frame link structure including two sets of side frame X-shaped link units, the side frame link units include two side frame diagonal draw bars 114 arranged in a crossing manner, the top ends of the side frame X-shaped link mechanisms are respectively rotatably connected with the side rods 101 through the side frame horizontal rods 113, and the bottom ends of the side frame X-shaped link mechanisms are rotatably connected with the side rods 101 through the lower fixing members 121.

In this embodiment, the bottom frame structure includes a rotation hinge 115 and four bottom rods 116 rotatably connected to the rotation hinge 115, and the other ends of the bottom rods 116 are rotatably connected to the four side rods 101 through lower fixing members 121.

In this embodiment, the rear frame structure is connected with a pull rod structure, the pull rod structure includes a pull rod handle 117, a middle pull rod 118, two side pull rods 119 and a pull rod connecting seat 120, the pull rod handle 117 is installed on the upper end of the middle pull rod 118, the middle pull rod 118 is slidably connected with the pull rod connecting seat 120, the upper ends of the two side pull rods 119 are symmetrically arranged on two sides of the middle pull rod 118 and hinged to the pull rod connecting seat 120, and the lower ends of the two side pull rods 119 are rotatably connected with the lower end of the side rod 101 through a general fixing seat 103. Be connected with spacing draw-in groove 112 on the crosspoint of back frame X type connecting rod unit, spacing draw-in groove 112 sets up towards the draw bar structure, and when the handcart was folding, well pull rod 118 can joint in spacing draw-in groove 112 for overall structure is compacter stable after folding.

In this embodiment, the small-sized folding cart 200 is different from this folding cart in that the side frame X-shaped link structure of the small-sized folding cart 200 includes only one set of side frame X-shaped link units. The foldable trolley is arranged opposite to the front side of the small foldable trolley 200, and the outer side rod 201 is positioned on the plane of the front frame structure of the small foldable trolley 200.

In some other embodiments, as shown in fig. 6, the foldable stroller may further be attached by a hitch to a shelf 202 via an expansion assembly, the shelf 202 comprising an outer side rod 201 and a support bracket 203 attached to the bottom end of the outer side rod 201, the support bracket 203 having attached to its inner side a T-shaped bracket 204 adapted to provide structural strength.

Example 2

As shown in fig. 7 to 8, the difference from embodiment 1 is that the foldable trolley 200 and the small-sized foldable trolley 200 are formed as an integral structure sharing the front frame structure and the side bar 101 by the expansion fixture.

In this embodiment, the upper and lower ends of the two side rods 101 on the plane of the front frame structure are respectively connected with an expansion fixing member, the expansion fixing member includes an upper expansion fixing member 307 and a lower expansion fixing member 308, the upper expansion fixing member 307 is adapted to connect the shared front frame horizontal folding rod 105, the side frame horizontal rod 113 of the large-size foldable trolley and the side frame horizontal rod of the small-size foldable trolley 200, and the lower expansion fixing member 308 is adapted to connect the shared front frame horizontal folding rod 105 and the front frame diagonal draw rod 107, the side frame diagonal draw rod 114 and the bottom draw rod 116 of the large-size foldable trolley and the side frame diagonal draw rod and the bottom draw rod of the small-size foldable trolley 200.

The above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A folding handcart comprises a frame structure and a frame body structure arranged on the frame structure, wherein the frame structure comprises four side rods arranged in an array, the frame body structure comprises a front frame structure, a rear frame structure, symmetrical side frame structures and a bottom frame structure,

the front frame structure comprises two front frame horizontal folding rods with folding joints in the middle, a front frame vertical rod and two front frame diagonal rods, and the two front frame horizontal folding rods are rotatably connected with the two side rods through common fixing pieces or expansion fixing pieces respectively; the upper end and the lower end of the front frame upright rod are respectively connected with the folding joint; the front frame upright stanchion is provided with a sliding sleeve which can slide along the length direction of the front frame upright stanchion, one end of the two front frame diagonal draw bars is hinged with the sliding sleeve, and one end of the two front frame diagonal draw bars is respectively hinged with the two foldable sides of the front frame horizontal pole or the two ends of the side pole;

when the handcart is unfolded, the front frame diagonal draw bar and the front frame horizontal folding bar form a triangular support structure; when the handcart is folded, the horizontal folding rod of the front frame is folded, the vertical upward movement of the vertical rod of the front frame is realized, the sliding sleeve slides along the vertical rod of the front frame, and the diagonal draw bar of the front frame is drawn close to the vertical rod of the front frame.

2. A foldable trolley according to claim 1, wherein at least one of said side bars in the same plane is provided with an extension member adapted to be connected to an external member, said external member comprising at least one of a corresponding set of external side bars;

the expansion assembly comprises a first connecting piece arranged on the side rod and a second connecting piece arranged on the outer side rod, and the first connecting piece is detachably connected with the second connecting piece;

and/or, the outside limit pole is connected with exterior structure, the extension subassembly still including set up in the limit pole/the extension mounting at outside limit pole's upper and lower both ends, the extension mounting is suitable for connecting frame structure with exterior structure makes folding handcart with the exterior subassembly forms the sharing limit pole/the integrative structure of outside limit pole.

3. A foldable trolley according to claim 2, wherein the first connecting member is telescopically coupled to the second connecting member, and wherein the first connecting member and/or the second connecting member is provided with at least one radially extending stop member to limit the first connecting member and the second connecting member from being disengaged from each other.

4. A folding trolley according to claim 3, characterized in that the first connecting member comprises an axially arranged plug groove, and the second connecting member comprises a pin and a connecting portion adapted to connect the pin to the outer leg, the connecting portion abutting against the top end of the plug groove when the pin is in engagement with the plug groove socket.

5. A foldable trolley according to claim 1, wherein the upper ends of the uprights of the front frame are connected to a pull cord adapted to move the uprights of the front frame upwardly.

6. A foldable trolley according to any one of claims 1 to 5, wherein the rear frame structure comprises two rear frame horizontal rods and a rear frame X-type link structure comprising at least one set of rear frame X-type link units, the rear frame X-type link units comprise two rear frame diagonal links arranged in a crossing manner, the top ends of the rear frame X-type link structures are rotatably connected to the side rods through the rear frame horizontal rods, respectively, and the bottom ends of the rear frame X-type link structures are rotatably connected to the side rods through the general fixing members or the extension fixing members.

7. A foldable trolley according to claim 6, wherein said rear frame structure is connected to a pull rod structure, and said X-shaped link structure of the rear frame is provided with a position-limiting slot adapted to fix said pull rod structure facing said pull rod structure.

8. A folding trolley according to claim 7, wherein said rear frame X-bar linkage arrangement includes an odd number of rear frame X-bar linkage elements, said limit-stop-slots being mounted at the intersection of said rear frame X-bar linkage elements in the middle.

9. A folding cart according to claim 6, wherein said side frame structure includes side frame horizontal bars and side frame link structure including at least one set of side frame X-shaped link units, said side frame link units including two side frame diagonal links arranged in a crossing manner, said side frame X-shaped link mechanisms having top ends rotatably connected to said side bars respectively via said side frame horizontal bars and bottom ends rotatably connected to said side bars via said general or extended fixing members.

10. A foldable trolley according to claim 9, wherein the base frame structure comprises a pivotal connection and four bottom rods pivotally connected to the pivotal connection, the other ends of the bottom rods being pivotally connected to four side rods by the general or extension fastening means.