Trolley with side face provided with multi-point folding support

Abstract

The trolley comprises a trolley frame, the trolley frame comprises a folding bottom frame, two sets of side face folding supports, a front folding support and a rear folding support, and the four ends of the folding bottom frame are rotationally connected with two front stand column pipes and two rear stand column pipes respectively. The top end of one side of the side face folding support is fixedly connected to the front stand column pipe, the bottom end of the side face folding support is slidably connected to the front stand column pipe, the top end of the other side of the side face folding support is fixedly connected to the rear stand column pipe, and the bottom end of the other side of the side face folding support is slidably connected to the rear stand column pipe. A rear wheel assembly is arranged below the rear stand column pipes, and a pull rod assembly is further arranged between the two front stand column pipes. When the trolley is folded, the side face folding supports can be folded downwards in a multi-point mode, the folding height is reduced, the folded side face folding supports are as high as the front stand column pipe and the rear stand column pipe, and the effect that the height is not increased when the trolley is folded is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of trolleys, in particular to a trolley with multi-point folding brackets arranged on its side. Background Art

[0002] As people's living standards improve, their desire for outdoor activities becomes stronger and stronger, and their requirements for convenience in life become higher and higher. When engaging in outdoor activities, they need to carry some miscellaneous items required for the activities. At this time, foldable carts that are easy to fold and carry come into being.

[0003] For example, Chinese patent publication number CN221794648U discloses a cart comprising a sidewall assembly, a cloth bag assembly, a chassis assembly, and quick-release buckles. The chassis assembly is provided with column mounting assemblies at the four ends, a wheel assembly is provided at the bottom end of the column mounting assembly, front and rear cross assemblies are provided at both ends of the column mounting assembly, sidewall assemblies are provided on both sides of the column mounting assembly, a pull rod assembly is provided at one end of the column mounting assembly, and quick-release buckles are provided at all four ends of the cloth bag assembly, which is connected to the column mounting assembly via the quick-release buckles. The utility model, through the coordinated design of the structure, enables the device to have a larger volume when unfolded while facilitating the convenient removal of the cloth bag inside the cart, thereby facilitating continuous cleaning and achieving better usage requirements.

[0004] However, when the above-mentioned trolley is folded, the side wall assembly is significantly higher than the front and rear vertical pipes, resulting in uneven heights of the folded trolley, making it inconvenient to effectively package and transport it. Utility Model Content

[0005] The purpose of the utility model is to provide a trolley with a multi-point folding bracket on the side, so as to solve the problem in the prior art that the trolley has different heights after folding, which is inconvenient for effective packaging and transportation.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A handcart with multi-point folding brackets on the side includes a frame, the frame includes a folding base frame, two groups of side folding brackets, a front folding bracket and a rear folding bracket, the four ends of the folding base frame are rotatably connected to two front column tubes and two rear column tubes, the top end of one side of the side folding bracket is fixedly connected to the front column tube, and the bottom end is slidably connected to the front column tube, the top end of the other side is fixedly connected to the rear column tube, and the bottom end is slidably connected to the rear column tube, a flip connecting piece is also provided between the side folding bracket and the folding base frame, a front wheel assembly is provided below the front column tube, a rear wheel assembly is provided below the rear column tube, and a pull rod assembly is also provided between the two front column tubes.

[0008] Preferably, the above-mentioned folding chassis includes two X-shaped cross brackets with the same structure, and the X-shaped cross bracket includes an X-shaped base and four bottom cross tubes connected to the X-shaped base, and the four bottom cross tubes are respectively movably connected to the front column tube or the rear column tube, and the flip connector.

[0009] Preferably, the above-mentioned flip connecting member includes a connecting seat, a first connecting rod and a second connecting rod, and three connecting grooves are provided on the connecting seat, two of which are used to connect the bottom cross tube, and the other connecting groove is used to rotatably connect the first connecting rod, the other end of the first connecting rod is rotatably connected to one end of the second connecting rod, and the other end of the second connecting rod is slidably connected to the side folding bracket.

[0010] Preferably, the above-mentioned side folding bracket includes two side cross brackets with the same structure, one side of the two side cross brackets is connected to the front pillar tube or the rear pillar tube, the upper ends of the other sides are connected to each other, and the lower ends are simultaneously slidably connected to the limiting holes of the second connecting rod.

[0011] Preferably, the front column tube and the rear column tube are both provided with an upper fixed seat and a sliding seat, the front folding bracket and the rear folding bracket have the same structure, and are respectively connected to the connecting grooves of the upper fixed seat and the sliding seat, and the side cross bracket is movably connected to the other connecting groove of the sliding seat.

[0012] Preferably, the rear pillar tube is further provided with a rear bottom fixing seat, the front pillar tube is further provided with a front bottom fixing seat, the rear wheel assembly is connected to the bottom of the rear bottom fixing seat, the front wheel assembly is connected to the bottom of the front bottom fixing seat, and the bottom cross tube is respectively movably connected to the connecting groove of the rear bottom fixing seat or the front bottom fixing seat.

[0013] Preferably, the above-mentioned pull rod assembly includes an outer pull rod, an inner pull rod and two straight tubes, the outer pull rod is provided with a plastic pull rod shell, one end of the straight tube is connected to the corresponding front bottom fixing seat through a rotating part, and the other end is movably connected to the plastic pull rod shell, and the plastic pull rod shell is also provided with a marble button, an elastic part is provided in the outer pull rod, and marbles are provided on the elastic part, and the marbles are controlled by the marble button to pass through or extend into the outer pull rod, the top end of the outer pull rod is provided with a switch control sleeve, one end of the inner pull rod extends into the outer pull rod, and the inner pull rod is controlled to extend or retract into the outer pull rod by the switch control sleeve, and the other end of the inner pull rod is also provided with a handle.

[0014] Preferably, the upper end of the outer pull rod is inserted with an outer pull rod upper limit sleeve, and the lower end of the inner pull rod is inserted with an inner pull rod lower limit sleeve. The inner pull rod is correspondingly provided with a first through hole for embedding the boss, and the outer pull rod and the outer pull rod upper limit sleeve are correspondingly provided with a second through hole for the boss to pass through. The inner pull rod lower limit sleeve and the outer pull rod upper limit sleeve are also symmetrically provided with clamping blocks, and the corresponding clamping blocks on the inner pull rod and the outer pull rod are provided with bayonet sockets.

[0015] Preferably, a limiting protrusion is formed on one side of the plastic pull rod shell, and the lower end of the outer pull rod is sleeved with an outer pull rod bottom limiting sleeve, and the outer pull rod bottom limiting sleeve is provided with a limiting groove for clamping the limiting protrusion.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] (1) The trolley of the utility model has a simple structure and a foldable design of each side of the frame, so that the frame can be folded together as much as possible in multiple directions, reducing the storage volume of the trolley;

[0018] (2) By providing a flip connector between the side folding bracket and the folding base, multi-point folding can be achieved when the trolley is folded, so that the side folding bracket can be folded downward. Compared with the traditional side folding, the folding height is reduced. The folded side folding bracket can be the same height as the front and rear column tubes, that is, the folding effect does not increase the height. In this way, the folding height of the entire trolley is reduced, which is convenient for storage, carrying, packaging and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure between the side folding bracket and the flip connector in the present invention;

[0021] Figure 3 This is a schematic diagram of the split structure of the flip connector in the present invention;

[0022] Figure 4 This is a structural diagram of the side folding bracket in the present invention in the unfolded and folded states;

[0023] Figure 5 This is a structural diagram of the unfolded and folded states of the folding bracket in the utility model;

[0024] Figure 6 This is a schematic diagram of the split structure between the inner pull rod and the outer pull rod in the utility model;

[0025] Figure 7This is a schematic diagram of the split structure of the pull rod assembly in the utility model

[0026] Figure 8 This is a schematic diagram of the structure between the outer pull rod and the plastic pull rod shell in the utility model;

[0027] Figure 9 It is a side structural diagram of the utility model;

[0028] Figure 10 This is a structural diagram of the utility model with the pull rod assembly removed;

[0029] Figure 11 This is a schematic diagram of the structure of the utility model in a folded state (1);

[0030] Figure 12 This is a structural diagram (2) of the utility model in a folded state.

[0031] In the figure: 1-front folding bracket; 2-rear folding bracket; 3-front column tube; 4-rear column tube; 5-X-shaped base; 6-bottom cross tube; 7-connecting seat; 8-first connecting rod; 9-second connecting rod; 10-side cross bracket; 11-upper fixed seat; 12-sliding seat; 13-rear bottom fixed seat; 14-front bottom fixed seat; 15-outer pull rod; 16-inner pull rod; 17-straight tube; 18-plastic pull rod shell; 19-rotating part; 20-marble button; 21-marble; 22-switch control sleeve; 23-handle; 24-outer pull rod upper limit sleeve; 25-inner pull rod lower limit sleeve; 26-block; 27-outer pull rod bottom limit sleeve; 28-bayonet; 901-limiting hole; 1801-limiting protrusion; 2701-limiting groove. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] like Figure 1-12As shown, a handcart with multi-point folding brackets on the side includes a frame, the frame includes a folding base frame, two groups of side folding brackets, a front folding bracket 1 and a rear folding bracket 2, the four ends of the folding base frame are rotatably connected to two front column tubes 3 and two rear column tubes 4, the top end of one side of the side folding bracket is fixedly connected to the front column tube 3, and the bottom end is slidably connected to the front column tube 3, the top end of the other side is fixedly connected to the rear column tube 4, and the bottom end is slidably connected to the rear column tube 4, a flip connector is also provided between the side folding bracket and the folding base frame, a front wheel assembly is provided below the front column tube 3, a rear wheel assembly is provided below the rear column tube 4, and a pull rod assembly is also provided between the two front column tubes 3.

[0034] The trolley of the present invention has a simple structure and is designed with foldable frames on all sides, so that the frames can be folded together as much as possible in multiple directions, thereby reducing the storage volume of the trolley. By arranging a flip connector between the side folding brackets and the folding base frame, multi-point folding can be achieved when the trolley is folded, so that the side folding brackets can be folded downward. Compared with the traditional side brackets that fold directly, the folded height is reduced, and the folded side folding brackets can be made the same height as the front and rear column tubes after folding, that is, the effect of folding without increasing the height, thus reducing the folded height of the entire trolley, making it convenient to store, carry, pack and transport.

[0035] Furthermore, the folding chassis comprises two identical X-shaped cross-braces, each comprising an X-shaped base 5 and four bottom cross-tubes 6 connected thereto. The four bottom cross-tubes 6 are movably connected to the front column tubes 3 or the rear column tubes 4, as well as to the flip connectors. This design creates a double-bottom structure for the folding chassis, making the stroller stronger, easier to fold, and smaller in size.

[0036] Furthermore, the flip connecting member includes a connecting seat 7, a first connecting rod 8 and a second connecting rod 9. Three connecting grooves are provided on the connecting seat 7, two of which are used to connect the bottom cross tube 6, and the other connecting groove is used to rotatably connect the first connecting rod 8. The other end of the first connecting rod 8 is rotatably connected to one end of the second connecting rod 9, and the other end of the second connecting rod 9 is slidably connected to the side folding bracket. The side folding bracket includes two side cross brackets 10 with the same structure. One side of the two side cross brackets 10 is connected to the front column tube 3 or the rear column tube 4, and the upper ends of the other sides are connected to each other, and the lower ends are simultaneously slidably connected to the limiting hole 901 of the second connecting rod 9.

[0037] With the above design, when the flip connector is unfolded, the height of the side folding bracket can be increased, the volume ratio of the cart can be increased, and the overall connection strength and stability of the cart can be improved; when folded, the first connecting rod 8 is flipped downward, and the second connecting rod 9 slides toward the first connecting rod 8 and folds, thereby reducing the height of the side folding bracket and facilitating the folding operation.

[0038] Furthermore, an upper fixed seat 11 and a sliding seat 12 are provided on the front pillar tube 3 and the rear pillar tube 4. The front folding bracket 1 and the rear folding bracket 2 have the same structure and are respectively connected to the connecting grooves of the upper fixed seat 11 and the sliding seat 12. The side cross bracket 10 is correspondingly movably connected to the other connecting groove of the sliding seat 12. A rear bottom fixed seat 13 is also provided on the rear pillar tube 4, and a front bottom fixed seat 14 is also provided on the front pillar tube 3. The rear wheel assembly is connected to the bottom of the rear bottom fixed seat 13, and the front wheel assembly is connected to the bottom of the front bottom fixed seat 14. The bottom cross tube 6 is respectively movably connected to the connecting grooves of the rear bottom fixed seat 13 or the front bottom fixed seat 14.

[0039] The above design, through the design of each fixed seat and sliding seat 12, can make the folding and unfolding operation of the entire frame smoother, and the cart support strength when unfolded is more stable, thereby improving the stability of the cart; the upper fixed seat 11 and the sliding seat 12 have the same structure, so they can also be processed and used in a unified manner, reducing processing costs.

[0040] Furthermore, the pull rod assembly includes an outer pull rod 15, an inner pull rod 16 and two straight tubes 17. A plastic pull rod shell 18 is provided on the outer pull rod 15. One end of the straight tube 17 is connected to the corresponding front bottom fixing seat 14 through a rotating member 19, and the other end is movably connected to the plastic pull rod shell 18. A marble button 20 is also provided on the plastic pull rod shell 18. An elastic member is provided in the outer pull rod 15, and a marble 21 is provided on the elastic member. The marble 21 is controlled by the marble button to pass through or extend into the outer pull rod 15. A switch control sleeve 22 is provided on the top end of the outer pull rod 15. One end of the inner pull rod 16 extends into the outer pull rod 15, and the switch control sleeve 22 controls the inner pull rod 16 to extend or retract into the outer pull rod 15. A handle 23 is also provided on the other end of the inner pull rod 16. The upper end of the outer pull rod 15 is inserted with an outer pull rod upper limit sleeve 24, and the lower end of the inner pull rod 16 is inserted with an inner pull rod lower limit sleeve 25. The lower limit sleeve 25 and the upper limit sleeve 24 of the outer pull rod are also symmetrically provided with blocks 26, and the corresponding blocks 26 are provided on the inner pull rod 16 and the outer pull rod 15. A limit protrusion 1801 is formed on one side of the plastic pull rod shell 18, and the lower end portion of the outer pull rod 15 is sleeved with an outer pull rod bottom limit sleeve 27, and the outer pull rod bottom limit sleeve 27 is provided with a limiting groove 2701 for clamping the limit protrusion 1801; wherein, two pressing pieces can be symmetrically provided on the switch control sleeve 22, and a protruding column is provided on the inner wall of the pressing piece. A first through hole for embedding the protruding column is correspondingly provided on the inner pull rod 16, and a second through hole for the protruding column to pass through is correspondingly provided on the outer pull rod 15 and the upper limit sleeve 24 of the outer pull rod, so as to control the inner pull rod 16 to extend or retract the outer pull rod 15. Blocks can also be provided on the inner walls of the switch control sleeves of the outer pull rod 15 and the inner pull rod 16 to cooperate with the work of each limit sleeve.

[0041] With the above design, the pull rod assembly is detachable and foldable, which is convenient for unfolding for use and folding or disassembling for storage; through the design of the rotating part 19, the pull rod assembly can be directly removed from the frame, realizing the detachability of the card dry assembly; through the design of the plastic pull rod shell 18, the two straight tubes 17 can be unfolded and folded relative to the pull rod, realizing the foldability of the pull rod assembly; through the design of the switch control sleeve 22, the inner pull rod 16 can be extended or retracted into the outer pull rod 15, reducing the folding height of the pull rod, thereby reducing the overall folding height of the cart, which is convenient for storage; each limit sleeve and its structural design can make the unfolding and folding operation of the pull rod assembly smoother and more stable.

[0042] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A trolley with a multi-point folding bracket on the side, comprising a frame, characterized in that: The frame includes a folding base frame, two groups of side folding brackets, a front folding bracket and a rear folding bracket. The four ends of the folding base frame are rotatably connected to two front column tubes and two rear column tubes respectively. The top end of one side of the side folding bracket is fixedly connected to the front column tube, and the bottom end is slidably connected to the front column tube. The top end of the other side is fixedly connected to the rear column tube, and the bottom end is slidably connected to the rear column tube. A flip connector is also provided between the side folding bracket and the folding base frame. A front wheel assembly is provided below the front column tube, and a rear wheel assembly is provided below the rear column tube. A pull rod assembly is also provided between the two front column tubes.

2. The trolley with multi-point folding brackets on the side according to claim 1, characterized in that: The folding chassis includes two X-shaped cross brackets with the same structure. The X-shaped cross bracket includes an X-shaped base and four bottom cross tubes connected to the X-shaped base. The four bottom cross tubes are respectively movably connected to the front column tube or the rear column tube and the flip connector.

3. The trolley with multi-point folding brackets on the side according to claim 2, characterized in that: The flip connecting member includes a connecting seat, a first connecting rod and a second connecting rod. Three connecting grooves are provided on the connecting seat, two of which are used to connect the bottom cross tube, and the other connecting groove is used to rotatably connect the first connecting rod. The other end of the first connecting rod is rotatably connected to one end of the second connecting rod, and the other end of the second connecting rod is slidably connected to the side folding bracket.

4. The trolley with multi-point folding brackets on the side according to claim 3, characterized in that: The side folding bracket includes two side cross brackets with the same structure. One side of the two side cross brackets is connected to the front pillar tube or the rear pillar tube, the upper ends of the other sides are connected to each other, and the lower ends are simultaneously slidably connected to the limiting holes of the second connecting rod.

5. The trolley with multi-point folding brackets on the side according to claim 4, characterized in that: The front column tube and the rear column tube are both provided with an upper fixed seat and a sliding seat. The front folding bracket and the rear folding bracket have the same structure and are respectively connected to the connecting grooves of the upper fixed seat and the sliding seat. The side cross bracket is movably connected to the other connecting groove of the sliding seat.

6. The trolley with multi-point folding brackets on the side according to claim 5, characterized in that: The rear pillar tube is also provided with a rear bottom fixing seat, and the front pillar tube is also provided with a front bottom fixing seat. The rear wheel assembly is connected to the bottom of the rear bottom fixing seat, and the front wheel assembly is connected to the bottom of the front bottom fixing seat. The bottom cross tube is respectively movably connected to the connecting groove of the rear bottom fixing seat or the front bottom fixing seat.

7. The trolley with multi-point folding brackets on the side according to claim 6, characterized in that: The pull rod assembly includes an outer pull rod, an inner pull rod and two straight tubes. A plastic pull rod shell is provided on the outer pull rod. One end of the straight tube is connected to the corresponding front bottom fixing seat through a rotating part, and the other end is movably connected to the plastic pull rod shell. A marble button is also provided on the plastic pull rod shell. An elastic part is provided in the outer pull rod, and marbles are provided on the elastic part. The marbles are controlled by the marble button to pass through or extend into the outer pull rod. A switch control sleeve is provided on the top end of the outer pull rod. One end of the inner pull rod extends into the outer pull rod, and the inner pull rod is controlled to extend or retract into the outer pull rod by the switch control sleeve. A handle is also provided at the other end of the inner pull rod.

8. The trolley with multi-point folding brackets on the side according to claim 7, characterized in that: The upper end of the outer pull rod is inserted with an outer pull rod upper limit sleeve, and the lower end of the inner pull rod is inserted with an inner pull rod lower limit sleeve. The inner pull rod is correspondingly provided with a first through hole for the boss to be embedded, and the outer pull rod and the outer pull rod upper limit sleeve are correspondingly provided with a second through hole for the boss to pass through. The inner pull rod lower limit sleeve and the outer pull rod upper limit sleeve are also symmetrically provided with clamping blocks, and the corresponding clamping blocks on the inner pull rod and the outer pull rod are provided with bayonet sockets.

9. The trolley with multi-point folding brackets on the side according to claim 7, characterized in that: A limiting protrusion is formed on one side of the plastic pull rod shell, and the lower end of the outer pull rod is sleeved with an outer pull rod bottom limiting sleeve, and the outer pull rod bottom limiting sleeve is provided with a limiting groove for clamping the limiting protrusion.

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