Crawler for handcart and handcart

Abstract

The utility model discloses a backdrop for a handcart and the handcart, the backdrop for the handcart comprises a backdrop support, the backdrop support comprises four support vertical pipes, four top pipes, four extension pipes and four connectors; each connector comprises four interfaces, namely two mutually vertical inner interfaces, an outer interface, an outer interface and a lower interface perpendicular to the lower part of the plane which are positioned on the same plane, two ends of the top pipe are respectively connected with the inner interfaces of the two connectors, the lower interface is connected with the top of the supporting vertical pipe, the outer interface is connected with one end of the extension pipe, and the extension pipe is connected with the top of the top pipe. The outer connector is an inclined hole which gradually inclines upwards from inside to outside. In the outdoor environment, the sky curtain support is detachably installed on the trolley, the sky curtain can shield and protect articles and users in the trolley from rainwater or sunlight, the sky curtain can be detached indoors, and the flexibility is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of trolleys, and particularly relates to a canopy for a trolley and the trolley. Background Art

[0002] A trolley is used for transporting items by pushing or pulling. Common trolleys typically include a handle and a loading platform for placing items. Rollers are located at the bottom of the loading platform, and the handle is pulled to rotate the loading platform and rollers, enabling short-distance transportation of items. However, the loading platforms of traditional trolleys are often set up outdoors. For example, the trolley described in Chinese Patent Publication No. CN219565138U has a rectangular frame with a handle on one side and no covering on top. This can easily expose items to the sun in sunny outdoor environments or get wet on rainy days, resulting in drawbacks during use. Summary of the Invention

[0003] The purpose of the utility model is to provide a canopy for a trolley and a trolley in view of the defects of the prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions: a canopy for a trolley, including a canopy bracket, the canopy bracket including four supporting vertical tubes, four top tubes, four extension tubes and four connecting heads; the connecting head includes four interfaces, namely two mutually perpendicular inner interfaces located on the same plane, an outer interface and a lower interface perpendicular to the plane below, the two ends of the top tube are respectively connected to the inner interfaces of the two connecting heads, the lower interface is connected to the top of the supporting vertical tube, and the outer interface is connected to one end of the extension tube. The outer interface is an inclined hole that gradually tilts upward from the inside to the outside.

[0005] The upward inclined hole design of the external interface reduces the sinking angle of the extension tube after installation compared to the design of the interface with a horizontal hole, reduces the falling of the outer periphery of the curtain installed on the canopy bracket, further reduces the resistance of the wind in the environment to the canopy during use, and improves the windproof effect during use.

[0006] Furthermore, a reinforcing rib is provided between any two adjacent interfaces in the connector.

[0007] Furthermore, the inclination angle of the inclined hole is less than 45°.

[0008] Furthermore, a spring piece with a marble is provided in the pipe mouth of the supporting vertical tube or top tube or extension tube. After the interface is assembled with the pipe mouth of the supporting vertical tube or top tube or extension tube, the marble passes through the small hole at the pipe mouth of the supporting vertical tube or top tube or extension tube and the limiting hole on the interface.

[0009] Furthermore, the supporting vertical tube is a square tube or a special-shaped tube.

[0010] Furthermore, the extension tube or supporting vertical tube or top tube adopts a foldable structure, which includes at least two tube bodies and elastic ropes running through all the tube bodies, and two adjacent tube bodies are assembled by plugging through the shrinkage of the tube bodies.

[0011] Furthermore, it also includes a tarpaulin, and the four corners of the tarpaulin are provided with limiting pieces that are adapted to the outer ends of the extension tubes.

[0012] Furthermore, the inner surface of the tarpaulin is provided with Velcro, and is installed with the extension tube or the supporting vertical tube or the top tube through the Velcro.

[0013] A trolley includes a canopy and a frame for the above-mentioned trolley, wherein the frame includes four columns and rollers at the bottom of the columns, two adjacent columns on the front and rear sides are connected by a lower cross tube, and any two adjacent columns are connected by side walls. A base frame is provided between the front and rear sides, and the bottom of the supporting vertical tube can be detachably mounted on the top of the column.

[0014] Furthermore, the side wall between two adjacent columns on the front side includes a lower transverse tube, which connects the lower ends of the two columns, and a handle is movably riveted on the column or the lower transverse tube.

[0015] Furthermore, the side wall between two adjacent pillars on the rear side includes a flippable rear baffle, the lower end of the rear baffle is movably riveted to the lower end of the pillar, and the upper end of the rear baffle is detachably connected to the upper end of the pillar.

[0016] Furthermore, elastic members are provided on the tops of the side tubes on the left and right sides of the rear fender, and when the rear fender is closed, the elastic members are embedded in the slots of the connecting seat on the top of the pillar.

[0017] Furthermore, the side wall between two adjacent columns on the left or right side includes a folding frame, which is composed of an X-shaped cross tube or multiple X-shaped cross tubes movably riveted on the same plane. The upper end of the folding frame is connected to the column, and the lower end is slidably connected to the column through a slider.

[0018] Furthermore, the chassis is foldable, and the front and rear ends of the chassis are movably riveted to the front side surface and the rear side surface respectively.

[0019] By adopting the technical solution of the utility model, the beneficial effects of the utility model are as follows: in outdoor environments, the canopy bracket can be detachably installed on the trolley to shield the items in the vehicle and the user from rain or sunlight, and can be removed indoors, which is highly flexible; the tube body is foldable, which reduces the overall length and is convenient for storage; the curtain is fixed to the outer end by a limit piece, and the inner side is fixed to the canopy bracket by Velcro, which is firmly and reliably installed; the frame of the trolley is foldable, which can be folded and stored when not in use to reduce space occupancy; the rear frame design can be opened to extend the length of the vehicle to place items when transporting longer items. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a stereogram of a canopy used for a cart;

[0021] Figure 2 This is a bottom view of the connector in the installed state;

[0022] Figure 3 It is a schematic diagram of the internal structure of the connector;

[0023] Figure 4 This is a schematic diagram of the installation of the pipe interface and the elastic part;

[0024] Figure 5 It is a side view of a wheelbarrow;

[0025] Figure 6 It is a stereogram of a wheelbarrow;

[0026] Figure 7 It is a three-dimensional diagram of the assembled state of the vehicle frame and the canopy bracket;

[0027] Figure 8 yes Figure 5 A partial enlarged view of part A in the middle;

[0028] Figure 9 yes Figure 6 A partial enlarged view of part B in the middle;

[0029] Figure 10 It is a schematic diagram of the assembly of the support vertical pipe and the column;

[0030] Figure 11 It is a schematic diagram of a foldable tube structure.

[0031] In the figure: 1 supporting vertical tube, 2 top tube, 3 extension tube, 31 groove, 4 connector, 41a inner interface, 41b outer interface, 41c lower interface, 42 reinforcing rib, 5 limiting hole, 6 upper connector, 7 connecting pin, 8 frame, 81 column, 82 roller, 83 lower cross tube, 84 folding frame, 85 bottom frame, 85a bottom frame, 86 upper connecting seat, 86a slot, 87 lower connecting seat, 88 slider, 89 handle, 810 upper cross tube, 811 rear baffle, 811a side tube, 9 tarpaulin, 10 elastic member, 11 spring piece, 12 marble, 13 tube body, 13a shrinkage, 14 limiting member, 15 lower connector, 16 wire rope. DETAILED DESCRIPTION

[0032] The specific embodiments of the present invention are further described in conjunction with the accompanying drawings to make the present technical solution clearer and more understandable.

[0033] like Figure 1-11As shown, a canopy for a trolley includes a canopy bracket and a tarpaulin 9, the tarpaulin 9 is detachably mounted on the canopy bracket, the canopy bracket includes four supporting vertical tubes 1, four top tubes 2, four extension tubes 3 and four connecting heads 4, the connecting heads 4 use four interfaces, which are three interfaces located on the same plane and a lower interface 41c perpendicular to the plane. Two inner interfaces 41a of the three interfaces are perpendicular to each other, and the two ends of the top tube 2 are respectively connected to an inner interface of the two connecting heads 4, the four top tubes 2 form a rectangle, and an outer interface 41b is connected to one end of the extension tube 3. The outer interface 41b is an inclined hole that gradually tilts upward from the inside to the outside, and the inclination angle α of the inclined hole is less than 45° (preferably 0-30°), and the lower interface 41c is connected to the top of the supporting vertical tube 1; the bottom of the supporting vertical tube 1 is detachably connected to the trolley.

[0034] In order to increase the strength of the connection between the pipes, a reinforcing rib 42 is provided between any two adjacent interfaces in the connector 4 .

[0035] The supporting vertical pipe 1 in this embodiment is preferably a square pipe or a special-shaped pipe.

[0036] Since the connector 4 is directly plugged into and assembled with each tube, in order to improve the stability of the assembly part, a limiting hole 5 is opened at each interface of the connector 4, and a spring piece 11 with a marble 12 is provided in the pipe mouth of the supporting vertical tube 1, the top tube 2, and the extension tube 3. After the interface is assembled with the corresponding pipe mouth of the supporting vertical tube 1 or the top tube 2 or the extension tube 3, the marble 12 passes through the small hole at the pipe mouth of the supporting vertical tube 2 or the top tube 2 or the extension tube 3 and the limiting hole 5 on the interface.

[0037] In order to facilitate folding and storing the entire canopy support when not in use, the extension tube 1 or the supporting vertical tube 2 or the top tube 3 in this embodiment adopts a foldable structure.

[0038] In one configuration, the foldable structure includes multiple tubes 13 and an elastic cord 16 that extends through the tubes. When two adjacent tubes are assembled, the constricted end 13a of one tube is inserted into the other end of the other tube. If two tubes 13 are used, the constricted end of each tube can be inserted into the other end. If three tubes are used, the constricted end of each tube can be inserted into the other end, or the constricted ends of the middle tube can be inserted into the tubes on both sides. The ends of the elastic cord 16 are fixed to the two outer tubes. In this embodiment, the elastic cord is preferably a steel wire rope.

[0039] A tarpaulin 9 is mounted on the upper side of the canopy frame. The inner surface of the tarpaulin 9 is provided with Velcro, which is fixed to the top tube 2 and the extension tube 3 via Velcro at the corresponding positions. A stopper 14 is provided at the outer end of the tarpaulin 9, which is engaged with the groove 31 at the outer end of the extension tube 3 through the hole on the stopper 14.

[0040] The awning bracket further includes an upper socket 6 and a connecting pin 7. The upper socket 6 is embedded at the bottom of the support vertical pipe 1. The connecting pin 7 is arranged inside the upper socket 6, and the lower end of the connecting pin 7 is detachably installed on the frame 8 of the trolley. This awning is mainly used on the trolley. It can also be directly inserted into the soil bottom surface and other places through the connecting pin 7 in an outdoor environment for use.

[0041] A through hole is opened at the lower end of the support vertical pipe 1, and a screw or a pin shaft, etc. passes through the through hole to be fixedly connected with the upper socket 6 and the upper end of the connecting pin 7.

[0042] A trolley includes the awning for the trolley and the frame 8 described above. The frame 8 includes four columns 81 and rollers 82 at the bottom of the columns. The two columns on the front and back, left side or right side are connected by side walls. Among them, the two adjacent columns on the front side are connected by a lower cross pipe 83. A folding frame 84 is arranged between the two adjacent columns 81 on the left and right sides, and a foldable bottom frame 85 is arranged between the front and back sides; The bottom of the support vertical pipe 1 is detachably installed on the top of the column 81.

[0043] Specifically, the lower end of the connecting pin 7 of the awning bracket is inserted into the lower socket 15, and the lower socket 15 is inserted into the top of the column 81.

[0044] The folding frame 84 shown includes one or more X-shaped cross pipes 84a hinged in sequence on the same plane. The X-shaped cross pipes 84a are formed by riveting the middle parts of two pipes. The upper end of the front side or the rear side of the folding frame 85 is riveted to the upper connecting seat 86 at the upper end of the corresponding column 81, and the lower end is slidably connected to the corresponding column 81 through a slider 88; The bottom frame 85 includes two inner hinged bottom frames 85a, and the outer sides of the bottom frames 85a are riveted to the lower cross pipe 83.

[0045] An upper cross pipe 810 is further arranged between the two columns 81 on the front side. A handle 89 is riveted on the front side, and the handle can rotate back and forth.

[0046] A rear retaining frame 811 is riveted on the two columns 81 on the rear side. The rear retaining frame 811 is in an overall "eye" shape structure. Elastic members 10 are arranged at the tops of the side pipes 811a on the left and right sides. When the rear retaining frame is turned over and closed towards the column, the elastic members 10 are embedded into the card slots 86a of the upper connecting seat 86 at the top of the column 81. The lower sides of the side pipes 811a are riveted to the lower connecting seat 87 at the lower part of the column 81 and can rotate back and forth around the riveting part. The elastic members 10 can be springs, rubbers, etc.

[0047]

[0048] ​Note that the above are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are possible for those skilled in the art without departing from the scope of protection of the present invention. Therefore, while 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 scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A canopy for a trolley, characterized in that: The canopy support comprises four vertical support pipes, four top pipes, four extension pipes and four connectors; The connecting head includes four interfaces, namely two mutually perpendicular inner interfaces located on the same plane, an outer interface and a lower interface perpendicular to the plane. The two ends of the top pipe are respectively connected to the inner interfaces of the two connecting heads, the lower interface is connected to the top of the supporting vertical pipe, and the outer interface is connected to one end of the extension pipe. The outer interface is an inclined hole that gradually tilts upward from the inside to the outside.

2. A canopy for a trolley according to claim 1, characterized in that: A reinforcing rib is provided between any two adjacent interfaces in the connector; or the inclination angle of the inclined hole is less than 45°.

3. The canopy for a trolley according to claim 1, characterized in that: A spring piece with a marble is provided inside the pipe mouth of the supporting vertical pipe or top pipe or extension pipe. After the interface is assembled with the pipe mouth of the supporting vertical pipe or top pipe or extension pipe, the marble passes through the small hole at the pipe mouth of the supporting vertical pipe or top pipe or extension pipe and the limiting hole on the interface.

4. The canopy for a trolley according to claim 1, characterized in that: The supporting vertical pipe is a square pipe.

5. The canopy for a trolley according to claim 1, characterized in that: The extension tube or supporting vertical tube or top tube adopts a foldable structure, which includes at least two tube bodies and an elastic rope running through all the tube bodies, and two adjacent tube bodies are connected through the shrinkage of the tube bodies.

6. The canopy for a trolley according to claim 1, characterized in that: It also includes a tarpaulin, and the four corners of the tarpaulin are provided with limiting pieces that are adapted to the outer ends of the extension tubes.

7. The canopy for a trolley according to claim 6, characterized in that: The inner surface of the tarpaulin is provided with Velcro, and is mounted with the extension tube or the supporting vertical tube or the top tube via the Velcro.

8. A trolley, characterized in that: It includes a canopy and frame for a cart as described in any one of claims 1 to 7 above, the frame includes four columns and rollers at the bottom of the columns, any two adjacent columns are connected by side walls, a base frame is provided between the front and rear side surfaces, and the bottom of the support vertical tube can be detachably mounted on the top of the column.

9. The trolley according to claim 8, wherein: The side wall between two adjacent columns on the front side includes a lower transverse tube, which connects the lower ends of the two columns, and a handle is movably riveted on the column or the lower transverse tube; Alternatively, the side wall between two adjacent pillars on the rear side includes a flippable rear baffle, the lower end of the rear baffle is movably riveted to the lower end of the pillar, and the upper end of the rear baffle is detachably connected to the upper end of the pillar.

10. The trolley according to claim 8, wherein: The side wall between two adjacent columns on the left side or the right side includes a folding frame, which is composed of an X-shaped cross tube or multiple X-shaped cross tubes movably riveted on the same plane. The upper end of the folding frame is connected to the column, and the lower end is slidably connected to the column through a slider; Alternatively, the chassis is foldable, and the front and rear ends of the chassis are movably riveted to the front side surface and the rear side surface respectively.

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