Foldable double-layer trolley

Abstract

The foldable double-layer trolley comprises an upper trolley frame and a lower trolley frame which are detachably connected, each of the upper trolley frame and the lower trolley frame comprises frames at the front end and the rear end, side folding frames located on the two sides and a bottom folding frame located at the bottom, the upper trolley frame and the lower trolley frame are used in a spliced mode, and the space for containing goods of the foldable trolley is greatly increased. The cargos can be placed on different frames according to different types of the cargos, dislocation of the cargos of different types caused by shaking in the driving process is prevented, and a user can conveniently classify the cargos; a connecting piece is arranged between the upper vehicle frame and the lower vehicle frame, the upper vehicle frame is detachably installed at the upper end of the lower vehicle frame through the connecting piece, a user can select to install or detach the upper vehicle frame according to the requirements of goods loading and transporting, and the use multifunctionality of the user is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of folding bicycle, in particular to a foldable double-layer trolley. BACKGROUND

[0002] In people's life, often need to transport goods. In most cases, need manpower to transport goods to the destination, not only time-consuming but also laborious, therefore the market invented folding trolley, in the face of the above situation can be placed on the trolley a large number of goods push or pull to the destination. And folding trolley can be folded, not use when and will not occupy larger space.

[0003] The existing folding bicycle only has single-layer containing space, and the containing goods are limited, and a large number of goods cannot be transported at one time, and different types of goods are loaded in the same space, and the activity in the driving process can cause the goods to be messy and not easy to classify. UTILITY MODEL CONTENT

[0004] In order to overcome the defects of the prior art, the utility model provides a foldable double-layer trolley. In order to solve the above technical problems, the utility model provides the following technical scheme.

[0005] A foldable double-layer trolley, comprising detachably connected upper frame and lower frame, the bottom of the lower frame is provided with wheels, the upper frame and the lower frame each comprise frame at front and rear ends, side folding frame at both sides and bottom folding frame at the bottom, the frame comprises two vertical columns and upper and lower rods for connecting the two vertical columns, a connecting piece is arranged between the upper frame and the lower frame, and the upper frame is detachably mounted on the upper end of the lower frame through the connecting piece.

[0006] Further, the top of the vertical column is provided with a fixed block, and a longitudinally movable sliding block is further arranged on the vertical column, in the upper frame, the upper end of the side folding frame is rotatably connected to the fixed block, and the lower end is rotatably connected to the sliding block, in the lower frame, the upper end of the side folding frame is rotatably connected to the sliding block, and the lower end is rotatably connected to the bottom folding frame.

[0007] Further, the connecting piece comprises a partition sheet, an upper connecting column protruding from the upper end of the partition sheet and a lower connecting column protruding from the lower end of the partition sheet, the two vertical columns at the upper and lower ends are respectively inserted into the upper connecting column and the lower connecting column, and the partition sheet is clamped between the two vertical columns.

[0008] Further, the rear end of the lower frame is provided with an opening and closing frame, a hinge piece is arranged on the lower rod, the opening and closing frame is hingedly connected to the hinge piece, the bottom of the opening and closing frame is provided with a locking block connected to the hinge piece, and the opening and closing frame is limited by the locking block after being closed.

[0009] Further, the connecting end of the locking block is provided with an arc-shaped part, a movable slot coaxially hinged to the hinge piece is arranged on the locking block, and the opening and closing frame is limited by the displacement of the movable slot after being rotated and closed.

[0010] Further, the adjustable connecting band is arranged between the opening and closing frame and the frame, two ends of the connecting band are provided with connecting buckles, and the two connecting buckles are rotatably arranged on the upper end of the stand and the upper end of the opening and closing frame, and the maximum angle of rotation opening of the opening and closing frame is limited by the connecting band.

[0011] Further, the side folding frame comprises a plurality of pairs of cross frames connected through hinges, in the upper frame, upper ends of the cross frames are hingedly connected to fixing blocks, and lower ends of the cross frames are hingedly connected to sliding blocks; in the lower frame, upper ends of the cross frames are hingedly connected to the sliding blocks, and lower ends of the cross frames are hingedly connected to the bottom folding frame, and folding is realized through sliding of the sliding blocks.

[0012] Further, the bottom folding frame comprises two bottom frames and a rotating piece arranged between the two bottom frames, one end of each bottom frame is hingedly connected to the rotating piece, and the other end of each bottom frame is hingedly connected to the lower rod.

[0013] Further, the rotating piece comprises a first rotating piece and a second rotating piece, the first rotating piece and the second rotating piece are hingedly connected, and the bottom frames at the front end and the rear end are hingedly connected to the first rotating piece and the second rotating piece respectively.

[0014] Further, the front end of the lower frame is provided with a telescopic handle frame, the handle frame is rotatably connected to the lower rod, and the upper end of the handle frame is provided with a pull ring.

[0015] Compared with the prior art, the utility model can achieve the beneficial effects that:

[0016] The utility model discloses a detachable upper frame and lower frame, two frame splicing uses, greatly increased the space of folding car can accommodate goods, and can prevent different kinds of goods from being prevented on different frames according to different kinds of goods, prevent the different kinds of goods from being misaligned due to the shaking in the driving process, facilitate the user to classify.

[0017] The connecting piece is arranged between the upper frame and the lower frame, the upper frame is detachably installed on the upper end of the lower frame through the connecting piece, the upper frame is detachable, and users can select installation or dismounting of the upper frame according to the needs of loading and shipping goods, so that the multifunctionality of use is met, the locking state of the locking mechanism is manually released, the opening and closing frame can be opened, and the operation is relatively convenient. ACCURACY

[0018] Figure 1 It is the perspective view of the utility model.

[0019] Figure 2 It is the side view of the utility model.

[0020] Figure 3 It is the perspective view of the bottom folding frame of the utility model.

[0021] Figure 4 It is the perspective view of the hinge piece and the locking block of the utility model.

[0022] Figure 5 The utility model discloses a connecting piece perspective view.

[0023] Fig. 1, upper frame, 2, lower frame, 3, wheel, 4, frame, 5, side folding frame, 6, bottom folding frame, 7, stand, 8, upper rod, 9, lower rod, 10, connecting piece, 11, fixed block, 12, sliding block, 13, partition, 14, upper connecting column, 15, lower connecting column, 16, opening and closing frame, 17, hinge, 18, locking block, 19, arc part, 20, movable slot, 21, connecting band, 22, connecting buckle, 23, cross frame, 24, bottom frame, 25, rotating part, 26, first rotating part, 27, second rotating part, 28, handle frame, 29, pull ring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] As Figures 1-5 shown, a foldable double-layer handcart includes detachably connected upper frame 1 and lower frame 2, the bottom of lower frame 2 is provided with wheel 3, two frames are used in splicing, which greatly increases the space of foldable cart for accommodating goods, and different frames can be prevented on different goods according to different types of goods, so as to prevent misplacement of different types of goods caused by shaking during driving, and facilitate users to classify.

[0026] The upper frame 1 and the lower frame 2 each include frame 4 at two ends, side folding frame 5 at both sides and bottom folding frame 6 at the bottom, the side folding frame 5 and the bottom folding frame 6 fold to drive the frame 4 at two ends to be folded, so that the occupied volume is reduced after folding, which is convenient for users to carry outside and also facilitates merchants to pack and ship. Frame 4 includes two stands 7 and upper rod 8 and lower rod 9 for connecting and supporting the two stands, connecting piece 10 is arranged between the upper frame 1 and the lower frame 2, the upper frame 1 is detachably installed on the upper end of the lower frame 2 through the connecting piece 10, the upper frame 1 is detachable, and users can select to install or detach the upper frame 1 according to their own needs of loading and shipping goods, so as to meet the multifunctionality of users.

[0027] The top of the post 7 is provided with a fixed block 11, and the post 7 is further provided with a longitudinally movable sliding block 12. In the upper frame 1, the upper end of the side folding frame 5 is rotatably connected to the fixed block 11, and the lower end is rotatably connected to the sliding block 12. When folding, the upper end is fixed, and the folding is realized by moving the sliding block 12 downward. In the lower frame 2, the upper end of the side folding frame 5 is rotatably connected to the sliding block 12, and the lower end is rotatably connected to the bottom folding frame 6. When folding, the height of the lower end is fixed, and the folding is realized by moving the sliding block 12 upward. The folding of the side folding frame 5 is realized by moving the sliding block 12 upward and downward, and the post 7 does not rise during folding, further reducing the size after folding, and facilitating packaging.

[0028] The connecting piece 10 includes a partition sheet 13, an upper connecting column 14 protruding from the upper end of the partition sheet 13, and a lower connecting column 15 protruding from the lower end of the partition sheet 13. The two posts 7 at the upper and lower ends are respectively inserted into the upper connecting column 14 and the lower connecting column 15, and the structure is simple, and the installation and disassembly are relatively convenient. The partition sheet 13 is clamped between the two posts 7, and the partition sheet 13 is placed on the top of the post 7 at the lower end, preventing the connecting piece 10 from falling into the hollow post 7, and also serving as a partition to prevent the two posts 7 from contacting and causing large wear during driving.

[0029] The rear end of the lower frame 2 is provided with an opening and closing frame 16, which is used for loading and unloading goods by opening or closing the rear end of the lower frame 2. The lower rod 9 is provided with a hinge piece 17, which is welded to the lower rod 9. The opening and closing frame 16 is hingedly connected to the hinge piece 17 and can be opened and closed. The bottom of the opening and closing frame 16 is provided with a locking block 18 connected to the hinge piece 17. After the opening and closing frame 16 is closed, the locking block 18 is limited to prevent the opening and closing frame 16 from being opened by external force during driving.

[0030] The connecting end of the locking block 18 is provided with an arc-shaped part 19, and the locking block 18 is rotatably connected to the hinge piece 17 through the arc-shaped part 19. The locking block 18 is provided with a movable slot 20 coaxially hinged to the hinge piece 17. The hinge structure of the locking block 18 and the hinge piece 17 is that the hinge piece 17 is provided with a shaft hole, and the shaft column passes through the shaft hole and the movable slot 20 to realize the hinge. The length of the movable slot 20 is greater than the shaft hole on the hinge piece 17. After the opening and closing frame 16 is closed, it is perpendicular to the horizontal plane, and the movable slot 20 changes with the rotation angle of the opening and closing frame 16. Since the movable slot 20 has a space for the shaft column to move, the opening and closing frame 16 is displaced downward by its own gravity, the shaft column moves from one end of the movable slot 20 to the other end, the arc-shaped part 19 on the locking block 18 is displaced downward, the flat surface on the locking block 18 is in contact with the hinge piece 17, so that the opening and closing frame 16 cannot be rotated, and the locking of the opening and closing frame 16 is realized. When the opening and closing frame 16 needs to be opened, it only needs to be pulled upward, and the locking block 18 is displaced upward, and the arc-shaped part 19 in it cannot be in contact with the hinge piece 17 to form a limit, so the opening and closing frame 16 is opened by its own gravity.

[0031] The adjustable connecting belt 21 is provided between the opening and closing frame and the frame 4, two ends of the connecting belt 21 are provided with connecting buckles 22, the two connecting buckles 22 are rotatably installed on the upper end of the stand 7 and the upper end of the opening and closing frame 16 respectively, the maximum angle of the opening and closing frame being rotatably opened is limited by the connecting belt 21, when the opening and closing frame 16 is opened to be parallel to the horizontal plane, the connecting belt 21 is completely straightened, and the opening and closing frame 16 cannot continue to rotate downward.

[0032] The side folding frame 5 comprises a plurality of pairs of cross frames 23 connected by hinges, and the cross frame 23 is composed of two center movable riveted rods. In the upper frame 1, the upper end of the cross frame 23 is hinged to the fixed block 11, and the lower end is hinged to the sliding block 12; in the lower frame 2, the upper end of the cross frame 23 is hinged to the sliding block 12, and the lower end is hinged to the bottom folding frame 6, the folding is realized by the sliding of the sliding block 12, and the stand 7 does not rise during folding, thereby reducing the volume after folding.

[0033] The bottom folding frame 6 comprises two bottom frames 24 and a rotating part 25 located between the two bottom frames 24, the bottom frame 24 is composed of two rods and an H-shaped support frame, one end of the bottom frame 24 is hinged to the rotating part 25, and the other end is hinged to the lower rod 9, the folding of the two bottom frames 24 is realized by the rotating part 25, and the front and rear frames 4 at the two ends are also retracted. The rotating part 25 comprises a first rotating part 26 and a second rotating part 27, the first rotating part 26 and the second rotating part 27 are hingedly connected, and the front and rear bottom frames 24 are hingedly connected in the groove of the first rotating part 26 and the second rotating part 27 respectively.

[0034] The front end of the lower frame 2 is provided with a telescopic handle frame 28, the handle frame 28 is rotatably connected to the lower rod 9, the folding bicycle is pulled forward by the handle frame 28, and the handle frame 28 can be telescopic and rotate up and down, which is suitable for people of different heights. The upper end of the handle frame 28 is provided with a pull ring 29, which is convenient for users to hold and prevent slipping and falling.

[0035] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application, and any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A foldable double-decker handcart, characterized in that, The vehicle includes a detachably connected upper frame and a lower frame, with wheels at the bottom of the lower frame. Both the upper frame and the lower frame include frames at the front and rear ends, side folding frames on both sides, and bottom folding frames at the bottom. Each frame includes two uprights and upper and lower rods for connecting the two uprights. A connector is provided between the upper frame and the lower frame, and the upper frame is detachably mounted on the upper end of the lower frame through the connector.

2. The foldable double-layer handcart according to claim 1, characterized in that, A fixing block is installed on the top of the column, and a slider that can move longitudinally is also provided on the column. In the upper frame, the upper end of the side folding frame is rotatably connected to the fixing block, and the lower end is rotatably connected to the slider. In the lower frame, the upper end of the side folding frame is rotatably connected to the slider, and the lower end is rotatably connected to the bottom folding frame.

3. A foldable double-layer handcart according to claim 2, characterized in that, The connector includes a partition plate, an upper connecting post protruding from the upper end of the partition plate, and a lower connecting post protruding from the lower end of the partition plate. The two posts at the upper and lower ends are respectively inserted into the upper connecting post and the lower connecting post, and the partition plate is secured between the two posts.

4. A foldable double-layer handcart according to claim 1, characterized in that, The rear end of the lower frame is provided with an opening and closing frame, and a hinge is provided on the lower rod. The opening and closing frame is hinged to the hinge. The bottom of the opening and closing frame is provided with a locking block connected to the hinge. After the opening and closing frame is closed, it is limited by the locking block.

5. A foldable double-layer handcart according to claim 4, characterized in that, The locking block has an arc-shaped part at the connecting end and a movable groove that is coaxially hinged to the hinge component. After the opening and closing frame rotates and closes, the movement of the movable groove achieves the limiting position.

6. A foldable double-layer handcart according to claim 4, characterized in that, An adjustable connecting strap is provided between the opening and closing frame and the frame. The two ends of the connecting strap are provided with connecting buckles. The two connecting buckles are rotatably installed on the upper end of the column and the upper end of the opening and closing frame, respectively. The connecting strap limits the maximum angle at which the opening and closing frame can be rotated open.

7. A foldable double-layer handcart according to claim 2, characterized in that, The side folding frame includes several pairs of hinged cross frames. In the upper frame, the upper end of the cross frame is hinged to a fixed block, and the lower end is hinged to a slider. In the lower frame, the upper end of the cross frame is hinged to a slider, and the lower end is hinged to a bottom folding frame. Folding is achieved by sliding the slider.

8. A foldable double-layer handcart according to claim 2, characterized in that, The bottom folding frame includes two base frames and a rotating component located between the two base frames. One end of the base frame is hinged to the rotating component, and the other end is hinged to the lower rod.

9. A foldable double-layer handcart according to claim 8, characterized in that, The rotating component includes a first rotating component and a second rotating component, which are hinged together. The base frame at the front and rear ends is respectively hinged to the first rotating component and the second rotating component.

10. A foldable double-layer handcart according to claim 1, characterized in that, The front end of the lower frame is provided with a retractable handle frame, which is rotatably connected to the lower rod, and the upper end of the handle frame is provided with a pull ring.

Images