Trolley capable of being flatly folded in sliding mode

Abstract

The utility model discloses a sliding flat folding trolley which comprises a front frame, a rear frame, a left side folding frame, a right side folding frame and a frame body composed of a bottom folding frame, and idler wheels are arranged at the bottom of the front frame and the bottom of the rear frame. Each side folding frame comprises one or more X-shaped cross pipes movably hinged to the same plane, the upper ends of the outer sides of the side folding frames are longitudinally and slidably connected with the front frame or the rear frame, and the lower ends of the outer sides of the side folding frames are movably riveted with the lower end of the front frame or the rear frame. The bottom folding frame comprises a pair of supporting assemblies which are symmetrically arranged front and back, each supporting assembly comprises two supporting pipes which are distributed in a splayed shape, the two supporting pipes face the center of the frame body, the portions, away from the center of the frame body, of the two supporting pipes are close ends and separated ends respectively, and the four close ends are movably riveted to the same axis through pin shafts; and the four separated ends are movably riveted with the left side and the right side of the front frame or the rear frame respectively. Through the design of the bottom folding frame and the side folding frame, the trolley can be quickly folded and stored, the occupied space is small after the trolley is folded, and transportation and outdoor carrying in the production process are facilitated.

Description

Technical Field

[0001] This utility model belongs to the technical field of trolleys, specifically relating to a sliding and folding handcart. Background Technology

[0002] Handcarts are mainly used in daily life for places where it is inconvenient to transport goods by motor vehicles. Common handcart structures come in various forms, including foldable and non-foldable.

[0003] For example, Chinese patent with publication number "CN219192301U" discloses a handcart with anti-collision protection function. The handcart in this patent has a fixed size and cannot be folded, and its large size is not conducive to packing and transportation. Chinese patent with publication number CN205469183U discloses a fixing structure for a folding handcart. Although this fixing structure can achieve folding, the height of the cart frame changes. The height is higher in the folded state than in the unfolded state, which is also not conducive to storage and transportation. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a sliding and folding handcart.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sliding folding handcart, comprising a frame consisting of a front frame, a rear frame, two side folding frames on the left and right, and a bottom folding frame, wherein the bottom of the front frame and the rear frame are provided with rollers; the side folding frame comprises one or more X-shaped cross tubes that are movably hinged on the same plane, the upper outer end of which is longitudinally slidably connected to the front frame or the rear frame, and the lower outer end of which is movably riveted to the lower end of the front frame or the rear frame;

[0006] The bottom folding frame includes a pair of support components arranged symmetrically at the front and back. Each support component includes two support tubes distributed in a figure-eight shape. The two support tubes facing the center of the frame and away from the center of the frame are respectively the approach end and the separation end. The four approach ends are movably riveted to the same axis by pins, and the four separation ends are movably riveted to the left and right sides of the front frame or the rear frame, respectively.

[0007] Furthermore, an end cap is provided on one of the two proximal ends of the front or rear side, with the two proximal ends of the end cap located on the left and right sides of the two proximal ends of the other side, and a pin passes through the end cap and is movably connected to the proximal end.

[0008] Furthermore, the bottom folding frame also includes a pair of bottom tubes, each bottom tube having its two ends connected to the inner sides of two separate ends.

[0009] Furthermore, it also includes a side frame connecting tube located below the bottom folding frame, with the left and right ends of the side frame connecting tube being movably riveted to the two side folding frames respectively.

[0010] Furthermore, the side frame connecting tube includes an integrally formed square tube and flat tubes located at both ends of the square tube.

[0011] Furthermore, it also includes two L-shaped connectors, one end of which is movably riveted to the end of the side frame connecting tube, and the other end is movably riveted to the side folding frame.

[0012] Furthermore, the side folding frame includes three X-shaped cross tubes, two side frame connecting tubes, and the lower ends of two adjacent X-shaped cross tubes are movable riveting points. The other end of the L-shaped connector in each side frame connecting tube is movablely riveted to the lower riveting point.

[0013] Furthermore, the front or rear frame includes a lower horizontal tube and two vertical tubes with rollers at the bottom, with both ends of the lower horizontal tube connected to the lower ends of the two vertical tubes respectively; the vertical tubes are provided with sliding seats that can slide up and down, and the sliding seats are movably riveted to the upper end of the side folding frame.

[0014] Furthermore, the front or rear frame also includes an upper horizontal tube, the two ends of which are respectively connected to the upper ends of two vertical tubes.

[0015] Furthermore, the lower cross tube of the front frame is equipped with a retractable handle; or, the rollers on the front frame are casters.

[0016] The beneficial effects of this utility model are as follows: the design of the bottom folding frame and the side folding frame allows the trolley to be quickly folded flat for storage, taking up little space after folding, which is convenient for transportation during production and carrying when going out; the side folding frame slides up and down through the sliding seat, so that the height after folding is no higher than the height of the frame in the unfolded state, and the height of the frame does not change after folding; the side frame connecting tube connects the left and right side folding frames, providing auxiliary support for the bottom folding frame, enhancing the load-bearing capacity of the bottom folding frame, and improving the stability of the trolley during use. Attached Figure Description

[0017] Figure 1 It is the first three-dimensional sliding folding handcart. Figure 1 ;

[0018] Figure 2 It is the first three-dimensional sliding folding handcart. Figure 2 ;

[0019] Figure 3 It is a three-dimensional sliding and folding handcart. Figure 1 ;

[0020] Figure 4 It is a three-dimensional sliding and folding handcart. Figure 2 .

[0021] In the diagram: 1. Front frame, 11. Upright tube, 12. Lower horizontal tube, 13. Upper horizontal tube, 2. Rear frame, 3. Side folding frame, 31. X-shaped cross tube, 32. Sliding seat, 33. Lower rivet point, 4. Bottom folding frame, 41. Support tube, 41a. Approach end, 41b. Separation end, 42. Bottom tube, 43. End cap, 5. Tie rod, 51. Handle, 52. Telescopic rod, 6. Roller, 7. Side frame connecting tube, 71. Square tube, 72. Flat tube, 8. L-shaped connector. Detailed Implementation

[0022] The specific solutions and embodiments of this utility model will be further described in conjunction with the accompanying drawings, making the technical solution clearer and more understandable.

[0023] like Figure 1-2 As shown, a sliding folding trolley includes a frame consisting of a front frame 1, a rear frame 2, two side folding frames 3, and a bottom folding frame 4. The bottom of the front frame 1 and the rear frame 2 are equipped with rollers 6. Each side folding frame 3 includes one or more X-shaped cross tubes 31 movably hinged to the same plane. The upper outer end of each tube is longitudinally slidably connected to the front frame 1 or the rear frame 2, and the lower outer end is movably riveted to the lower end of the front frame 1 or the rear frame 2. The bottom folding frame 4 includes a pair of support components symmetrically arranged front and rear. Each support component includes two support tubes 41 distributed in a figure-eight shape. The two support tubes 41 facing the center of the frame and away from the center of the frame are respectively the approach end 41a and the separation end 41b. The four approach ends 41a are movably riveted to the same axis by pins, and the four separation ends 41b are movably riveted to the left and right sides of the front frame 1 and the rear frame 2, respectively. The X-shaped cross tube 31 is formed by movably riveting two tubes together.

[0024] An end cap 43 is provided on two approach ends 41a on one of the front or rear sides, with the two approach ends of the end cap 43 located on the left and right sides of the two approach ends on the other side, respectively. A pin passes through the end cap 43 and the approach ends. The support tube 41 is preferably a square tube.

[0025] The bottom folding frame 4 also includes a pair of bottom tubes 42, each of which is connected at both ends to the inner sides of two separate ends 41b. The two figure-eight distributed support tubes 41 and bottom tubes 42 are fixedly connected together. End caps 43 are provided on the two approach ends near the rear frame 2, respectively located on the left and right sides of the two approach ends near the front frame 1. Rotational connection is achieved by a pin passing through the four approach ends and the two end caps 43, realizing the independent assembly of the entire bottom folding frame. The two support components on the front and rear sides can rotate relative to the pin to converge or unfold.

[0026] The trolley also includes side frame connecting tubes 7 located below the bottom folding frame 4. The left and right ends of the side frame connecting tubes 7 are respectively riveted to the two side folding frames 4. When the trolley is unfolded, the side frame connecting tubes 7 support the bottom folding frame 4, improving the stability of the trolley when carrying people or goods.

[0027] The trolley also includes two L-shaped connectors 8. One end of the L-shaped connector 8 is movably riveted to the end of the side frame connecting tube 7, and the other end is movably riveted to the side folding frame 3.

[0028] The side frame connecting tube 7 includes an integrally formed square tube 71 and flat tubes 72 located at both ends of the square tube. One end of the L-shaped connector 8 is movably riveted to the end of the flat tube 72.

[0029] In one specific embodiment, the side folding frame 3 includes three X-shaped cross tubes 31 movably connected on the same plane. The upper end of the outer X-shaped cross tube 31 is movably connected to a sliding seat 32, and the lower end is movably connected to the lower end of the front frame 1 or the rear frame 2. The sliding seat 32 is longitudinally slidably connected to the front frame 1 or the rear frame 2. There are two side frame connecting tubes 7. The lower ends of two adjacent X-shaped cross tubes are movably riveted to the lower riveting point 33. The other end of the L-shaped connector 8 in each side frame connecting tube 7 is movably riveted to the lower riveting point 33.

[0030] The front frame 1 and rear frame 2 have the same structure, including a lower horizontal tube 12 and two vertical tubes 11 with rollers 6 at the bottom. The two ends of the lower horizontal tube 12 are respectively connected to the lower ends of the two vertical tubes 11. The assembly of the front and rear sides is completed directly through this structure. A sliding seat 32 that can slide up and down is provided on the vertical tube 11, and the sliding seat 32 is movably riveted to the upper end of the side folding frame 3.

[0031] The front frame 1 has casters with brakes; the rear frame 2 has casters with fixed wheels.

[0032] A pull rod 5 is movably mounted on the lower horizontal tube 12 of the front frame 1. The pull rod 5 is a telescopic rod 52, with a handle 51 fixed at the top of the telescopic rod 52. The bottom of the telescopic rod 52 is rotatably connected to the lower horizontal tube 12. Specifically, the bottom is movably riveted to the U-shaped piece above the lower horizontal tube 12. The entire pull rod 5 is assembled independently.

[0033] Example 2

[0034] like Figure 3-4 The sliding folding handcart shown differs from Embodiment 1 in that the front frame 1 or rear frame 2 of this embodiment also includes an upper horizontal tube 13, with both ends of the upper horizontal tube 13 connected to the upper ends of two vertical tubes 11 respectively.

[0035] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A sliding folding handcart, characterized in that, The frame consists of a front frame, a rear frame, two side folding frames on the left and right, and a bottom folding frame. The bottom of the front frame and the rear frame are equipped with rollers. The side folding frame includes one or more X-shaped cross tubes that are movably hinged on the same plane. The upper outer end is longitudinally slidably connected to the front frame or the rear frame, and the lower outer end is movably riveted to the lower end of the front frame or the rear frame. The bottom folding frame includes a pair of support components arranged symmetrically at the front and back. Each support component includes two support tubes distributed in a figure-eight shape. The two support tubes facing the center of the frame and away from the center of the frame are respectively the approach end and the separation end. The four approach ends are movably riveted to the same axis by pins, and the four separation ends are movably riveted to the left and right sides of the front frame and the rear frame, respectively.

2. The sliding folding handcart according to claim 1, characterized in that, An end cap is provided on one of the two proximal ends of the front or rear side. The two proximal ends of the end cap are respectively located on the left and right sides of the two proximal ends of the other side. A pin passes through the end cap and is movably connected to the proximal end.

3. A sliding folding handcart according to claim 1, characterized in that, The bottom folding frame also includes a pair of bottom tubes, each of which is connected at both ends to the inner sides of two separate ends.

4. A sliding folding handcart according to claim 1, characterized in that, It also includes a side frame connecting tube located below the bottom folding frame, with the left and right ends of the side frame connecting tube being movably riveted to the two side folding frames respectively.

5. A sliding folding handcart according to claim 4, characterized in that, The side frame connecting pipe includes an integrally formed square tube and flat tubes located at both ends of the square tube.

6. A sliding folding handcart according to claim 4 or 5, characterized in that, It also includes two L-shaped connectors, one end of which is movably riveted to the end of the side frame connecting tube, and the other end is movably riveted to the side folding frame.

7. A sliding folding handcart according to claim 6, characterized in that, The side folding frame includes three X-shaped cross tubes, two side frame connecting tubes, and the lower ends of two adjacent X-shaped cross tubes are movable riveting points. The other end of the L-shaped connector in each side frame connecting tube is movablely riveted to the lower riveting point.

8. A sliding folding handcart according to claim 1, characterized in that, The front or rear frame includes a lower horizontal tube and two vertical tubes with rollers at the bottom. The two ends of the lower horizontal tube are respectively connected to the lower ends of the two vertical tubes. The vertical tube is provided with a sliding seat that can slide up and down, and the sliding seat is movably riveted to the upper end of the side folding frame.

9. A sliding folding handcart according to claim 8, characterized in that, The front or rear frame also includes an upper horizontal tube, the two ends of which are respectively connected to the upper ends of two vertical tubes.

10. A sliding folding handcart according to claim 8, characterized in that, The lower cross tube of the front frame is equipped with a retractable handle; or, the rollers on the front frame are casters.

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