CN110329330B

CN110329330B - Folding carrier

Info

Publication number: CN110329330B
Application number: CN201910713247.0A
Authority: CN
Inventors: 孙慧
Original assignee: SHENZHEN WISDOM SCIENCE AND TECHNOLOGY CO LTD
Current assignee: SHENZHEN WISDOM SCIENCE AND TECHNOLOGY CO LTD
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2022-10-21
Anticipated expiration: 2039-08-02
Also published as: CN110329330A

Abstract

The invention belongs to the technical field of transportation devices, and discloses a folding carrier which comprises a walking support assembly, a rod frame assembly fixed above the walking support assembly, and suspension devices suspended on two sides of the rod frame assembly. The invention utilizes the hinged connection between the lower vertical rod frame and the upper vertical rod frame of the frame to lead the lower vertical rod frame and the upper vertical rod frame to be opened or folded after rotating so as to realize the adjustment of the height of the frame; meanwhile, the net basket and the swing arm can be arranged on two sides of the frame so as to meet different use requirements. Because the net baskets can be arranged on two sides of the bicycle, and the height of the bicycle frame and the length of the bottom supporting piece can be adjusted, the bicycle can achieve the effect of one bicycle with multiple purposes.

Description

Folding carrier

Technical Field

The invention relates to the technical field of conveying devices, in particular to a folding carrier.

Background

The frame of the existing carrier has 3 layers of high money and 2 layers of low money, but the installation of a net basket on two sides cannot be realized; or a basket with two sides, but the height adjustment of the frame and the length adjustment of the bottom supporting piece cannot be realized. The structure can only be suitable for single use requirements, the use is inconvenient, the height of the frame and the length of the bottom supporting piece can not be adjusted, and the occupied placing space is large.

In addition, the screw and the nut of current carrier, its fixed basket need operate with the help of specialized tool, therefore when adjusting basket mounting height, consuming time and inconvenient.

An effective solution to the problems in the related art has not been proposed yet.

Disclosure of Invention

The invention aims to provide a folding carrier, which solves the problems that the existing carrier is inconvenient to use, the height of a frame and the length of a bottom support piece cannot be adjusted, and the occupied placement space is large.

In order to achieve the purpose, the invention adopts the following technical scheme:

a folding porter, which comprises a walking support assembly, a rod frame assembly and a suspension device,

the walking support assembly comprises two telescopic bottom support tubes which are respectively arranged at two sides, a rod frame connecting piece for connecting the bottom support tubes and the rod frame assembly, and a bottom connecting rod fixed between the rod frame connecting pieces;

the rod frame assembly is fixed above the walking support assembly and comprises a lower vertical rod frame and an upper vertical rod frame hinged with the upper end of the lower vertical rod frame, and the upper vertical rod frame rotates around the upper end of the lower vertical rod frame to be folded or unfolded;

the suspension device is suspended on two sides of the rod frame assembly and comprises a plurality of net baskets and a plurality of swing arms, and the net baskets and the swing arms are hinged between the rod frame assembly through hinge pieces.

Preferably, the basket or the swing arm is configured to be self-locked and fixed on the rod frame assembly under the action of gravity when the basket or the swing arm is closed.

Preferably, the articulated elements are moving axis articulated elements, moving axis articulated elements include with the basket or the fixed base plate of swing arm and vertical fixation are in the articulated wing of base plate one side or both sides, be equipped with runway shape hole on the articulated wing, the basket or the swing arm is through passing runway shape hole and level are fixed the primary shaft of bar stock assembly with the bar stock assembly is articulated.

Preferably, the basket or the swing arm is configured such that when the basket or the swing arm is closed, the basket or the swing arm is secured to the lever frame assembly by a latch.

Preferably, the articulated elements are fixed-shaft articulated elements, each fixed-shaft articulated element comprises an end piece fixed to the net basket or the swing arm and wing plates vertically fixed to one side or two sides of the end piece, each wing plate is provided with a hinge shaft hole and a bolt hole matched with the bolt, and the net basket or the swing arm is hinged to the rod frame assembly through a second shaft penetrating through the hinge shaft hole and horizontally fixed to the rod frame assembly.

Preferably, the hinge shaft hole is a semi-closed rail hole, and the second shaft slides into the closed end of the semi-closed rail hole along the open end of the semi-closed rail hole.

Preferably, the upper vertical rod frame and the rod frame connecting piece are configured such that when the upper vertical rod frame is folded, the free end of the upper vertical rod frame is just embedded into the rod frame connecting piece, and the free end of the upper vertical rod frame and the rod frame connecting piece are locked by a glue handle screw or a bolt.

Preferably, the left and right side end support tubes comprise inner tubes and sleeves movably sleeved with the inner tubes, and the inner tubes and the sleeves are locked through rubber handle screws.

Preferably, a plurality of lateral T-shaped connecting pieces are arranged at the upper end of the lower vertical rod frame, a plurality of hinging blocks which are matched and hinged with the T-shaped connecting pieces are arranged at the tail end of the upper vertical rod frame, and the hinging blocks and the T-shaped connecting pieces are configured to be respectively nested in the corresponding T-shaped connecting pieces when the upper vertical rod frame is vertically unfolded.

Preferably, the T-shaped connecting member comprises a groove-shaped sleeve wrapped on the upper end of the lower stand bar and a pair of ear plates arranged on the opening side of the groove-shaped sleeve.

The invention has the beneficial effects that: the lower vertical rod frame and the upper vertical rod frame of the frame are opened or folded after rotating by utilizing the hinged connection between the two parts of the lower vertical rod frame and the upper vertical rod frame of the frame; the telescopic bottom support tube is adopted, so that the height of the frame can be adjusted; meanwhile, the net basket and the swing arm can be arranged on two sides of the frame so as to meet different use requirements. Because the net baskets can be arranged on two sides of the bicycle, and the height of the bicycle frame and the length of the bottom supporting piece can be adjusted, the bicycle can achieve the effect of one bicycle with multiple purposes.

Drawings

Fig. 1 is an isometric view of a folding cart according to a first embodiment of the present invention;

FIG. 2 is a schematic view of a walking support assembly and a bar frame assembly of a folding cart according to a first embodiment of the present invention;

FIG. 3 is a schematic view of a traveling support assembly of the folding cart according to an embodiment of the present invention;

FIG. 4 is a schematic view of a bottom support tube of the folding cart in accordance with the first embodiment of the present invention;

FIG. 5 is a schematic view of a bar frame assembly of a folding cart according to a first embodiment of the present invention;

FIG. 6 is a schematic view of a lower stand and an upper stand of the folding cart according to the first embodiment of the present invention;

FIG. 7 is a schematic view of a hinge block of the folding cart according to the first embodiment of the present invention;

FIG. 8 is a schematic view of a T-shaped connector of a folding cart according to a first embodiment of the present invention;

FIG. 9 is a schematic view of a movable shaft hinge and a swing arm of the folding cart according to the first embodiment of the present invention;

FIG. 10 is a schematic view of a movable shaft hinge of the folding cart according to the first embodiment of the present invention connected to a basket;

FIG. 11 is a schematic view of a movable shaft hinge with double-sided hinge wings of a folding cart according to a first embodiment of the present invention;

FIG. 12 is a schematic view of a movable shaft hinge with a single side hinge wing of a folding cart according to a first embodiment of the present invention;

FIG. 13 is a cross-sectional view of the bottom structure of the folding cart according to the first embodiment of the present invention;

FIG. 14 is a schematic view showing a bar frame connecting member of a folding cart according to a first embodiment of the present invention;

FIG. 15 is a schematic view of the fixed-axis hinge and the swing arm of the folding cart according to the second embodiment of the present invention;

FIG. 16 is a schematic view of the fixed-axis hinge of the folding cart in accordance with the second embodiment of the present invention connected to a basket;

FIG. 17 is a schematic view of a fixed-axis hinge with two side wings of a folding cart according to a second embodiment of the present invention;

FIG. 18 is a schematic view of a fixed-axis hinge with a single-sided wing of a folding cart according to a second embodiment of the present invention;

fig. 19 is a partial schematic structural view of the folding cart according to the second embodiment of the present invention when the baskets are closed;

FIG. 20 is a schematic view of a double-latch connection of the folding cart according to the third embodiment of the present invention;

FIG. 21 is a schematic view of a third embodiment of the folding cart of the present invention in an open position;

FIG. 22 is a schematic view showing a folding cart according to a third embodiment of the present invention;

fig. 23 is a schematic view showing the folding cart according to the third embodiment of the present invention when it is stowed.

In the figure:

100. a walking support assembly; 200. a rod frame assembly; 300. a suspension device;

110. a bottom support tube; 101. an inner tube; 102. a sleeve; 103. a pole frame connector; 104. a bottom connecting rod; 105. a caster wheel;

210. a lower stand bar frame; 220. an upper vertical rod frame; 201. a left lower upright rod; 202. a lower right vertical rod; 203. a T-shaped connector; 204. a left upper upright rod; 205. a right upper upright rod; 206. an upper connecting rod; 207. a hinged block; 208. a lower connecting rod;

310. a basket; 320. swinging arms; 301. a moving shaft hinge; 302. a fixed axis hinge;

1. a groove-shaped sleeve; 2. an ear plate; 3. connecting blocks; 4. a web; 5. a substrate; 6. a hinged wing; 7. a runway-shaped hole; 8. a bolt; 9. an end piece; 10. a wing plate; 11. the hinge shaft hole; 12. a pin hole; 13. double bolts.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings, not all of them.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to be limiting.

Example one

Referring to fig. 1, a folding cart includes a walking support assembly 100, a bar frame assembly 200 fixed above the walking support assembly 100, and suspension devices 300 suspended at both sides of the bar frame assembly 200;

the traveling support assembly 100 serves to support and guide the traveling of the entire folding truck, and the suspension 300 is detachably mounted on one side or both sides of the bar frame assembly 200 according to specific use conditions, so that the use mode is more flexible than that of the conventional folding truck.

The walking support assembly 100 has a function of manually adjusting the length, and on one hand, the length of the walking support assembly 100 needs to be adjusted according to the placement mode of the suspension device so as to obtain better stability; on the other hand, when the folding truck needs to be folded, the length of the walking support assembly 100 can be shortened, so as to save the occupied space of the folding truck. Specifically, referring to fig. 3-4, the walking support assembly 100 includes two bottom support tubes 110, which are disposed on the left and right sides and are parallel to each other and horizontally disposed, each of the left and right bottom support tubes 110 includes an inner tube 101 and a sleeve 102 movably sleeved with the inner tube 101, the inner tube 101 and the sleeve 102 are locked by a rubber handle screw, and the sleeve 102 is welded with a rod frame connector 103.

The pole frame assembly 200 can be unfolded or folded to achieve height adjustment according to specific environmental height limitation or the requirement of expansion capacity, and the use is flexible and convenient. Specifically, referring to fig. 2 and 5, the pole frame assembly 200 includes a lower pole frame 210 and an upper pole frame 220 hinged to the upper end of the lower pole frame 210, the upper pole frame 220 rotates around the upper end of the lower pole frame 210 to fold or unfold, the lower pole frame 210 includes a left lower pole 201 and a right lower pole 202 fixed to the left and right pole frame connectors 103, respectively, and the upper ends of the left lower pole 201 and the right lower pole 202 are provided with side lying T-shaped connectors 203, respectively.

Further, referring to fig. 6 and 8, the t-shaped connecting member 203 includes a groove-shaped sleeve 1 and a pair of ear plates 2 disposed on the opening side of the groove-shaped sleeve 1, and the upper ends of the left lower upright 201 and the right lower upright 202 are nested into the lower portion of the groove-shaped sleeve 1 on the corresponding side.

Referring to fig. 2 and 5-8, the upper vertical rod frame 220 includes a left upper vertical rod 204, a right upper vertical rod 205, and a plurality of upper connecting rods 206 horizontally connected between the left upper vertical rod 204 and the right upper vertical rod 205, the left upper vertical rod 204 and the right upper vertical rod 205 are respectively hinged with the ear plates 2 on the corresponding sides, the hinged parts of the left upper vertical rod 204 and the right upper vertical rod 205 and the ear plates 2 are respectively provided with a droplet-shaped hinge block 207 protruding toward the first side, the droplet-shaped hinge block 207 includes a connecting block 3 and a droplet-shaped web 4 vertically fixed on both sides of the connecting block 3, the droplet-shaped hinge block 207 and the T-shaped connecting member 203 are configured such that when the upper vertical rod frame 220 is unfolded vertically, the hinge ends of the left upper vertical rod 204 and the right upper vertical rod 205 are respectively nested on the upper portion of the slotted sleeve 1 of the T-shaped connecting member 203 on the corresponding side, and the hinge ends of the left upper vertical rod 204 or the right upper vertical rod 205 matched with the upper vertical rod 1 are respectively provided with glue handle screws or pins.

To facilitate the stowing and positioning of the suspension device 300, the suspension device is hinged to the pole frame assembly 200. Specifically, referring to fig. 9-10, the suspension device 300 includes a basket 310 and a swing arm 320, the basket 310 or the swing arm 320 is hinged to the frame assembly 200 to form a hinge structure rotating along a horizontal axis, a plurality of hinges are fixed to the basket 310 or the swing arm 320 at the hinge point with the frame assembly 200, and the plurality of hinges are configured such that when the basket 310 or the swing arm 320 is closed, the basket 310 or the swing arm 320 is self-locked and fixed to the frame assembly 200 under the action of gravity.

Further, referring to fig. 11 to 12, the hinge is a moving shaft hinge 301, the moving shaft hinge 301 includes a base plate 5 fixed to the basket 310 or the swing arm 320, and a hinge wing 6 vertically fixed to one side or both sides of the base plate 5, the hinge wing 6 is provided with a runway-shaped hole 7, and the basket 310 or the swing arm 320 is hinged to the frame assembly 200 by a first shaft passing through the runway-shaped hole 7 and horizontally fixed to the frame assembly 200. The basket 310 is formed by welding a framework with square tubes or angle irons and welding an iron net at the bottom of the framework. The iron net adopts rhombic meshes to increase the strength of the iron net and protect a user from being scratched, and a circle of steel wire is welded on the periphery of the iron net. The installation does not need tools such as a spanner and the like, and the installation can be directly carried out.

In order to limit the basket 310 from moving left and right and falling, the fixed positions of the upper movable shaft hinge parts 301 of the basket 310 are all arranged on the inner sides of the vertical rods on the two sides of the frame assembly 200.

In order to increase the stability and structural strength of the walking support assembly 100, referring to fig. 3, the bar frame connecting pieces 103 at the left and right sides are fixed by the horizontally transverse bottom connecting rod 104, and the bar frame connecting pieces 103 and the bottom connecting rod 104 are fixed by threaded connection.

In order to facilitate the retraction of the basket 310, referring to fig. 13, when the basket 310 is folded by turning upward, the basket 310 moves the first shaft to the other end of the racetrack shaped hole 7 under the action of its own gravity, so as to change the center position of the first shaft, and the basket 310 is locked and fixed without a space for downward rotation. When the basket 310 is opened, the basket 310 is fixed by lifting the basket 310 upward to move the first shaft to the other end of the runway-shaped hole 7, and then the basket 310 is turned over, laid flat and fixed. Likewise, the above-described method of retracting or opening the basket 310 is also applicable to the swing arm 320.

In order to increase the structural strength and stability of the bar frame assembly 200, a horizontally transverse lower connecting bar 208 is connected between the T-shaped connecting pieces 203 on the left and right sides, see fig. 5.

Further, referring to fig. 13-14, the upper vertical rod 220 and the rod frame connecting member 103 are configured such that when the upper vertical rod 220 is folded, the free ends of the left upper vertical rod 204 and the right upper vertical rod 205 are just embedded into the corresponding side rod frame connecting member 103, and the free ends of the left upper vertical rod 204 and the right upper vertical rod 205 are locked with the corresponding side rod frame connecting member 10 by glue handle screws.

In order to fix the basket 310 or the swing arm 320 at a desired rotation angle, the lower connecting rod 208 is further provided with a hook with a rope for hanging articles such as automobile accessories, and the hook with the rope is installed and fixed through a hole on the lower connecting rod 208.

In order to guide the walking support assembly 100 to run, referring to fig. 3, the free ends of the inner tube 101 and the sleeve 102 are provided with casters 105, the casters 105 are universal wheels for facilitating movement, and the universal wheels are connected through the holes on the inner tube 101 and the sleeve 102 by nuts and spacers.

Example two

The structure of the present embodiment is substantially the same as that of the first embodiment, except that the basket 310 or the swing arm 320 is fixed to the rod frame assembly 200 by the pin 8 when being rotated and retracted. Specifically, referring to fig. 15-19, the hinge member is a fixed-axis hinge member 302, the fixed-axis hinge member 302 includes an end member 9 fixed to the basket 310 or the swing arm 320, and a wing plate 10 vertically fixed to one side or both sides of the end member 9, the wing plate 10 is provided with a hinge shaft hole 11 and a bolt hole 12 engaged with the bolt 8, and the basket 310 or the swing arm 320 is hinged to the frame assembly 200 through a second shaft passing through the hinge shaft hole 11 and horizontally fixed to the frame assembly 200.

Further, the hinge shaft hole 11 is a semi-closed rail hole, and the second shaft slides into the closed end of the semi-closed rail hole along the open end of the semi-closed rail hole. The bolt 8 is formed by connecting a chain between two metal sub-bolts, and the heads of the two terminal bolts are provided with an elastic steel ball. One sub-bolt is inserted into the frame, and the spring steel ball at the head of the sub-bolt prevents the bolt from being lost due to loosening; the other sub-bolt is inserted into the bolt hole 12 when the folding basket 310 is folded upwards to the end, so as to prevent the basket 310 from falling down, and meanwhile, the spring balls on the sub-bolts prevent the bolts from exiting the bolt holes 12, and the bolts 8 can be respectively arranged on the left and the right of the basket 310.

The basket 310 is fixed when opened, and the dead axle hinge 302 is fastened to the glue handle screw mounted on the pole bracket assembly 200. The installation can be directly carried out without tools such as a spanner and the like. The basket 310 is fixed when being retracted, and the basket 310 is directly pushed upwards, so that the basket 310 is rotated upwards to a proper angle and then inserted into the bolt hole 12 through the bolt 8 to prevent the basket 310 from falling downwards. Likewise, the above-described method of stowing or opening the basket 310 is also applicable to the swing arm 320.

The fixed positions of the dead axle hinges 302 on the net basket 310 are all arranged at the inner sides of the vertical rods at the two sides of the frame assembly 200, so that the net basket 310 is limited from moving left and right and falling off.

EXAMPLE III

The structure of this embodiment is substantially the same as that of the second embodiment, except that the basket 310 or the swing arm 320 is fixed on the rod frame assembly 200 by the double bolts 13. Specifically, referring to fig. 20, one end of the double pin 13 serves as a hinge shaft, and the other end thereof is inserted into the pin hole 12 for fixing. Thanks to the connecting structure, when the net basket 310 or the swing arm 320 is installed or disassembled, tools such as a wrench and the like are not needed, and the use is very convenient.

Since the working principle of the first embodiment, the second embodiment and the third embodiment is the same, the working principle of the present invention will be described only by combining the structural features of the carrying folding cart in the third embodiment:

as shown in FIG. 21, in normal use, the upper stand bar 220 is opened and fixed, the inner tube 101 of the bottom support tube 110 is received in the sleeve 102 of the bottom support tube 110 and fixed, and the basket 310 and the swing arm 320 are installed on the same side of the frame. The basket 310 and the swing arm 320 are fixed by a rubber handle screw, a threaded rivet or a welded nut on the frame assembly 200, a connector and a limiting surface thereof.

As shown in fig. 22, when the carrier is folded to form the double-sided distribution baskets 310 to be used, the baskets 310 on the upper stand 220 are removed, and then the upper stand 220 is rotated and folded backward and downward. The upper vertical rod frame 220 rotates 180 degrees to overlap with the lower vertical rod frame 210, the free ends of the left upper vertical rod 204 and the right upper vertical rod 205 are just embedded into the corresponding side rod frame connecting pieces 103, and the free ends of the left upper vertical rod 204 and the right upper vertical rod 205 are locked with the corresponding side rod frame connecting pieces 103 through rubber handle screws or bolts. Then the rubber handle screw of the inner tube 101 of the fixed bottom support tube 110 is loosened, and the rubber handle screw is screwed to fix the inner tube 101 after being pulled out to a proper position. Finally, the basket 310 is fixed according to the required position, or the carrier can be folded, only the lower basket 2 layers are reserved and used as a low carrier, the inner pipe 101 of the bottom support pipe 110 is still retracted into the sleeve 102 and is not pulled out, and the placing space is saved while the balance is maintained.

As shown in fig. 23, when the cart is idle, the basket 310 and the swing arm 320 are rotated upwards to be folded by pushing the basket 310 and the swing arm 320 upwards, and after the basket 310 and the swing arm 320 are folded, the transport cart can be placed by being attached to the front and back of the transport cart, so that the placing space between the cart and the cart is greatly saved.

In summary, the present invention utilizes the hinged connection between the lower upright rod frame 210 and the upper upright rod frame 220 of the frame to make the lower upright rod frame 210 and the upper upright rod frame 220 rotate and then fixed, so as to realize the opening and folding of the frame, and facilitate the installation and use of the basket 310 on one side or both sides of the frame, so as to meet different requirements. The multifunctional bicycle is simple and reliable in structure, free of tools such as a wrench during installation, capable of being directly installed, flexible and convenient to operate and capable of effectively achieving the effect of one bicycle with multiple purposes.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A folding van is characterized by comprising a walking support assembly (100), a rod frame assembly (200) and a suspension device (300),

the walking support assembly (100) comprises two telescopic bottom support pipes (110) which are respectively arranged on two sides, a rod frame connecting piece (103) for connecting the bottom support pipes (110) with the rod frame assembly (200), and a bottom connecting rod (104) fixed between the rod frame connecting pieces (103);

the rod frame assembly (200) is fixed above the walking support assembly (100), the rod frame assembly (200) comprises a lower vertical rod frame (210) and an upper vertical rod frame (220) hinged with the upper end of the lower vertical rod frame (210), and the upper vertical rod frame (220) rotates around the upper end of the lower vertical rod frame (210) to be folded or unfolded;

the suspension device (300) is suspended at two sides of the rod frame assembly (200), and the suspension device (300) comprises a plurality of net baskets (310) and a plurality of swing arms (320) which are hinged with the rod frame assembly (200) through hinges;

the upper stand (220) and the stand connector (103) are configured such that when the upper stand (220) is folded, the free end of the upper stand (220) just fits into the stand connector (103); the free end of the upper vertical rod frame (220) is locked with the rod frame connecting piece (103) on the corresponding side through a rubber handle screw;

the left bottom support pipe (110) and the right bottom support pipe (110) respectively comprise an inner pipe (101) and a sleeve (102) movably sleeved with the inner pipe (101), the inner pipe (101) and the sleeve (102) are locked through rubber handle screws, and the rod frame connecting pieces (103) are welded on the sleeves (102);

the basket (310) or swing arm (320) is configured to be self-locked fixed on the bar frame assembly (200) under the action of gravity when the basket (310) or swing arm (320) is closed;

the hinge is a moving shaft hinge (301), the moving shaft hinge (301) comprises a base plate (5) fixed with the basket (310) or the swing arm (320) and hinge wings (6) vertically fixed on one side or two sides of the base plate (5), runway-shaped holes (7) are formed in the hinge wings (6), and the basket (310) or the swing arm (320) is hinged with the bar frame assembly (200) through a first shaft which penetrates through the runway-shaped holes (7) and is horizontally fixed on the bar frame assembly (200);

the upper end of the lower stand bar frame (210) is provided with a plurality of side-lying T-shaped connecting pieces (203), the tail end of the upper stand bar frame (220) is provided with a plurality of hinging blocks (207) which are matched and hinged with the T-shaped connecting pieces (203), and the hinging blocks (207) and the T-shaped connecting pieces (203) are configured to be respectively nested in the corresponding T-shaped connecting pieces (203) when the upper stand bar frame (220) is vertically unfolded;

the T-shaped connecting piece (203) comprises a groove-shaped sleeve (1) wrapped at the upper end of the lower vertical rod frame (210) and a pair of ear plates (2) arranged at the opening side of the groove-shaped sleeve (1);

go up pole setting (220) including upper left pole setting (204), upper right pole setting (205) and horizontally connect in upper left pole setting (204) with a plurality of last connecting rod (206) between upper right pole setting (205), upper left pole setting (204) with upper right pole setting (205) respectively with correspond the side ear plate (2) are articulated, upper left pole setting (204) with upper right pole setting (205) go up with ear plate (2) articulated department all is equipped with to the bellied water droplet form in one side articulated piece (207), the water droplet form articulated piece (207) include connecting block (3) and vertical fixation in water droplet form web (4) of connecting block (3) both sides, the water droplet form articulated piece (207) and T shape connecting piece (203) are configured as when going up the vertical expansion of pole setting (220), upper left side and articulated end of upper right pole setting (205) respectively correspond the side T shape connecting piece (203) the trough shape cover (1) upper portion just is nested with the upper right side of the trough shape connecting piece (205) set up with the upper portion of the upper portion and the upper portion of the glue handle (204) or the upper portion of it sets up the cooperation of bolt (205) respectively.