CN215663513U

CN215663513U - Foldable extensible handcart

Info

Publication number: CN215663513U
Application number: CN202121426147.9U
Authority: CN
Inventors: 周永帅; 石刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2022-01-28
Anticipated expiration: 2031-06-25

Abstract

The utility model provides a foldable extensible trolley, which comprises a first U-shaped frame, a second U-shaped frame and a bottom frame folding assembly arranged between the first U-shaped frame and the second U-shaped frame, wherein an extension structure is arranged on the second U-shaped frame; the extension structure comprises an extension frame, one end of the extension frame is hinged in the second U-shaped frame, and pull rods are arranged between two sides of the second U-shaped frame and the extension frame; a kidney-shaped groove is formed in the pull rod, a sliding column matched with the kidney-shaped groove is arranged on the extending frame, and one end of the pull rod is hinged with the second U-shaped frame through a connecting piece; when the folding chassis is stretched, the stretching frame is rotated and opened, so that the stretching frame and the folding assembly of the chassis are horizontally placed; the utility model provides a folding type extensible trolley, which overcomes the defects that the existing trolley cannot be extended and the bearing is limited.

Description

Foldable extensible handcart

Technical Field

The utility model relates to the field of trolleys, in particular to a foldable extensible trolley.

Background

Along with the improvement of standard of living, more and more people like self-driving to go outdoor activities, can carry a lot of picnic food and outdoor apparatus when self-driving simultaneously, but the car of self-driving generally can only drive the parking place, remaining distance majority needs to be done on foot in addition, people carry so much things outdoor on foot very inconveniently, also begin to sell the handcart that can fold and put in the trunk on the market now, during the use, can open the handcart and be used for carrying picnic food and outdoor apparatus, make things convenient for people to carry.

The existing trolley generally comprises an underframe assembly and supporting assemblies arranged on two sides of the underframe assembly, wherein the underframe assembly is used for bearing cargoes, and the length of the underframe assembly is generally fixed, cannot be extended and is poor in flexibility; and its chassis subassembly length is shorter, and it is limited to bear the weight of the goods, and the result of use is relatively poor.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims to provide a foldable extensible trolley, which overcomes the defects that the existing trolley cannot be extended and the bearing is limited.

(II) technical scheme

In order to solve the technical problem, the utility model provides a foldable extensible trolley, which comprises a first U-shaped frame, a second U-shaped frame and a bottom frame folding assembly arranged between the first U-shaped frame and the second U-shaped frame, wherein an extension structure is arranged on the second U-shaped frame; the extension structure comprises an extension frame, one end of the extension frame is hinged in the second U-shaped frame, and pull rods are arranged between two sides of the second U-shaped frame and the extension frame; when the folding chassis is stretched, the stretching frame is rotated and opened, so that the stretching frame and the folding assembly of the chassis are horizontally placed. The extension structure is additionally arranged, the extension structure can be opened or folded according to requirements through the matching of the extension frame and the pull rod, and the extension frame is turned outwards to be horizontal to the folding assembly of the underframe when extending, so that the overall length of the trolley can be effectively increased, and the bearing capacity is improved; the two sides of the extension frame are connected through the pull rod, so that the support strength is high, and the structure is stable and reliable; and the extension structure can be folded, the folding effect can not be influenced under the condition of extension, and the volume is small after the folding, thereby being convenient for storage.

Furthermore, a kidney-shaped groove is formed in the pull rod, a sliding column matched with the kidney-shaped groove is arranged on the extending frame, and one end of the pull rod is hinged to the second U-shaped frame through a connecting piece.

Furthermore, the two sides of the underframe folding component are symmetrically provided with side frame folding components, and each side frame folding component comprises a first supporting component and a second supporting component which are connected.

Furthermore, the first supporting component comprises a supporting rod arranged on the lower side of the underframe folding component, a third U-shaped frame is hinged to the supporting rod, and two sides of the third U-shaped frame are connected with the first U-shaped frame through a first connecting rod. Articulated on the bracing piece have first folding rod, the tip of first folding rod pass through the second connecting rod with the second U-shaped frame is connected.

Furthermore, the second support component comprises a second folding rod and a third folding rod which are hinged, the end part of the second folding rod is hinged with the first U-shaped frame, and the end part of the third folding rod is hinged with the second U-shaped frame.

Furthermore, the opening of the first U-shaped frame faces downwards, the opening of the second U-shaped frame faces upwards, and the extension frame is U-shaped.

Furthermore, the chassis folding assembly comprises a first chassis and a second chassis, wherein one end of the first chassis is hinged to the first U-shaped frame, and one end of the second chassis is hinged to the second U-shaped frame.

Furthermore, first truckles are installed on two sides of the lower end of the first U-shaped frame, and second truckles are installed on two sides of the lower end of the second U-shaped frame. Install the handle subassembly on the first U-shaped frame, the upside of first U-shaped frame is provided with the holder, handle subassembly joint is in the holder.

(III) advantageous effects

According to the foldable extensible trolley provided by the utility model, the extension structure is additionally arranged, and the extension structure can be opened or folded according to requirements through the matching of the extension frame and the pull rod, so that the flexibility is high; when the handcart is stretched, the stretching frame is overturned outwards to be horizontal to the folding assembly of the underframe, so that the whole length of the handcart can be effectively increased, and the bearing capacity is improved; the two sides of the extension frame are connected through the pull rod, so that the support strength is high, and the structure is stable and reliable; and the extension structure can be folded, the folding effect can not be influenced under the condition of extension, the volume is small after the folding, the storage is convenient, and the defects that the existing trolley can not be extended and the bearing is limited are overcome.

Drawings

FIG. 1 is a perspective view of a foldable extensible cart in accordance with the present invention;

FIG. 2 is a perspective view of an alternative angle of a foldable extensible cart in accordance with the present invention;

FIG. 3 is a schematic view of a foldable extensible cart in accordance with the present invention;

FIG. 4 is a perspective view of an extended configuration of the foldable extensible cart of the present invention;

the corresponding part names for the various reference numbers in the figures are: 1. a first U-shaped frame; 2. a second U-shaped frame; 3. a stretching frame; 4. a pull rod; 5. a kidney-shaped groove; 6. a traveler; 7. a connecting member; 8. a support bar; 9. a third U-shaped frame; 10. a first link; 11. a first folding bar; 12. a second link; 13. a second folding bar; 14. a third folding bar; 15. a first chassis; 16. a second chassis; 17. a first caster; 18. a second caster; 19. a handle assembly; 20. a clamping member.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

Referring to fig. 1 to 4, the present invention provides a foldable extensible cart, comprising a first U-shaped frame 1, a second U-shaped frame 2 and a chassis folding assembly installed between the first U-shaped frame 1 and the second U-shaped frame 2, wherein the second U-shaped frame 2 is installed with an extension structure; the opening of the first U-shaped frame 1 faces downwards, the opening of the second U-shaped frame 2 faces upwards, and the extension frame 3 is U-shaped.

Referring to fig. 4, the extension structure includes an extension frame 3, one end of the extension frame 3 is hinged in the second U-shaped frame 2, and a pull rod 4 is installed between both sides of the second U-shaped frame 2 and the extension frame 3; a kidney-shaped groove 5 is arranged on the pull rod 4, a sliding column 6 matched with the kidney-shaped groove 5 is arranged on the extension frame 3, the sliding column 6 is arranged in the kidney-shaped groove 5, and one end of the pull rod 4 is hinged with the second U-shaped frame 2 through a connecting piece 7. When the chassis is extended, the extending frame 3 is rotated outwards to open the extending frame 3, so that the extending frame 3 and the chassis folding component are horizontally placed.

Referring to fig. 1 and 3, the side frame folding assemblies are symmetrically installed at both sides of the underframe folding assembly, and each side frame folding assembly comprises a first support assembly and a second support assembly which are connected with each other. The first supporting component and the second supporting component are arranged, so that the folding trolley can be folded, the supporting strength of the chassis folding component can be enhanced, and the bearing capacity is increased.

Referring to fig. 1 and 3, the first supporting assembly includes a supporting rod 8 disposed at the lower side of the folding assembly of the chassis, a third U-shaped frame 9 is hinged on the supporting rod 8, and two sides of the third U-shaped frame 9 are connected to the first U-shaped frame 1 through a first connecting rod 10. A first folding rod 11 is hinged on the support rod 8, and the end part of the first folding rod 11 is connected with the second U-shaped frame 2 through a second connecting rod 12.

Referring to fig. 1 and 3, the second support assembly includes a second folding bar 13 and a third folding bar 14 which are hinged to each other, an end of the second folding bar 13 is hinged to the first U-shaped frame 1, and an end of the third folding bar 14 is hinged to the second U-shaped frame 2.

Referring to fig. 1 and 3, the chassis folding assembly includes a first chassis 15 and a second chassis 16, one end of the first chassis 15 is hinged to the first U-shaped frame 1, and one end of the second chassis 16 is hinged to the second U-shaped frame 2.

Referring to fig. 1, first casters 17 are installed on both sides of the lower end of the first U-shaped frame 1, and second casters 18 are installed on both sides of the lower end of the second U-shaped frame 2. Install handle subassembly 19 on the first U-shaped frame 1, the upside of first U-shaped frame 1 is provided with holder 20, and handle subassembly 19 joint is in holder 20.

When the folding is carried out, the extending frame 3 is turned over towards the second U-shaped frame 2, and the pull rod 4 is automatically folded; then, the first underframe 15 is turned towards the first U-shaped frame 1, the second underframe 16 is turned towards the second U-shaped frame 2, the third U-shaped frame 9 is rotated towards the middle, and finally the first U-shaped frame 1 and the second U-shaped frame 2 are closed towards the middle, and the side frame folding assembly is automatically folded.

According to the foldable extensible trolley provided by the embodiment, the extension structure is additionally arranged, and the extension structure can be opened or folded according to requirements through the matching of the extension frame and the pull rod, so that the flexibility is high; when the handcart is stretched, the stretching frame is overturned outwards to be horizontal to the folding assembly of the underframe, so that the whole length of the handcart can be effectively increased, and the bearing capacity is improved; the two sides of the extension frame are connected through the pull rod, so that the support strength is high, and the structure is stable and reliable; and the extension structure can be folded, the folding effect can not be influenced under the condition of extension, and the volume is small after the folding, thereby being convenient for storage.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A foldable extensible cart, comprising: the folding device comprises a first U-shaped frame (1), a second U-shaped frame (2) and a bottom frame folding assembly arranged between the first U-shaped frame (1) and the second U-shaped frame (2), wherein an extension structure is arranged on the second U-shaped frame (2); the extension structure comprises an extension frame (3), one end of the extension frame (3) is hinged in the second U-shaped frame (2), and a pull rod (4) is arranged between two sides of the second U-shaped frame (2) and the extension frame (3); when the folding chassis is stretched, the stretching frame (3) is rotated and opened, so that the stretching frame (3) and the folding component of the chassis are horizontally placed.

2. The foldable extensible cart of claim 1, wherein: be provided with kidney slot (5) on pull rod (4), be provided with on extension frame (3) with kidney slot (5) complex traveller (6), the one end of pull rod (4) pass through connecting piece (7) with second U-shaped frame (2) are articulated.

3. The foldable extensible cart of claim 1, wherein: the two sides of the underframe folding component are symmetrically provided with side frame folding components, and each side frame folding component comprises a first supporting component and a second supporting component which are connected.

4. The foldable extensible cart of claim 3, wherein: the first supporting component comprises a supporting rod (8) arranged on the lower side of the underframe folding component, a third U-shaped frame (9) is hinged to the supporting rod (8), and two sides of the third U-shaped frame (9) are connected with the first U-shaped frame (1) through a first connecting rod (10).

5. The foldable extensible cart of claim 4, wherein: articulated on bracing piece (8) have first folding rod (11), the tip of first folding rod (11) pass through second connecting rod (12) with second U-shaped frame (2) are connected.

6. The foldable extensible cart of claim 3, wherein: the second supporting component comprises a second folding rod (13) and a third folding rod (14) which are hinged to each other, the end portion of the second folding rod (13) is hinged to the first U-shaped frame (1), and the end portion of the third folding rod (14) is hinged to the second U-shaped frame (2).

7. The foldable extensible cart of claim 1, wherein: the opening of the first U-shaped frame (1) faces downwards, the opening of the second U-shaped frame (2) faces upwards, and the extension frame (3) is U-shaped.

8. The foldable extensible cart of claim 1, wherein: the chassis folding assembly comprises a first chassis (15) and a second chassis (16), one end of the first chassis (15) is hinged to the first U-shaped frame (1), and one end of the second chassis (16) is hinged to the second U-shaped frame (2).

9. The foldable extensible cart of claim 1, wherein: first truckles (17) are installed to the lower extreme both sides of first U-shaped frame (1), second truckle (18) are installed to the lower extreme both sides of second U-shaped frame (2).

10. The foldable extensible cart of claim 1, wherein: install handle subassembly (19) on first U-shaped frame (1), the upside of first U-shaped frame (1) is provided with holder (20), handle subassembly (19) joint is in holder (20).