CN104149824B - Folding shopping cart - Google Patents

Abstract

The invention discloses a foldable shopping cart, which comprises a cargo rack, a wheel assembly and a pull rod assembly; there are two wheel assemblies, and the two wheel assemblies are respectively rotatably arranged on both sides of the load rack; the pull rod assembly is hinged on The rear end of the cargo rack; the wheel assembly is provided with a wheel locking device, and the hinge of the pull rod assembly and the load rack is provided with a pull rod locking device; the folding shopping cart of the present invention, the wheel assembly and the pull rod assembly can be rotated to a parallel position, After being folded, it occupies the least space; and in the opened state, it is locked by the wheel locking device and the pull rod locking device respectively, which ensures the stability during use.

Description

A folding shopping cart

technical field

The invention relates to a foldable shopping cart, in particular to a foldable shopping cart with a simple, stable and portable structure.

Background technique

Shopping carts or trolleys are commonly used auxiliary tools for consumers when they go shopping. They can assist consumers to carry large or heavy items back to the cart or home; currently, the commonly used shopping carts on the market include portable and There are two types of heavy load; most of the light type are made of thin iron or aluminum tubes, which are simply bent, assembled, and wheels are added. Some are equipped with Oxford cloth shopping bags, and some are just an iron tube. Most of the frames can be folded relatively easily, but the overall structural stability is poor; while the general structure of the load-bearing vehicle is large and not portable.

Contents of the invention

In view of the above-mentioned technical problems, the object of the present invention is to provide a foldable shopping cart with a simple, stable and portable structure.

The technical solution of the present invention is realized in the following way: a foldable shopping cart includes a loading rack, a wheel assembly and a tie rod assembly; there are two wheel assemblies, and the two wheel assemblies are respectively rotatably arranged on both sides of the loading rack The pull rod assembly is hinged at the rear end of the carrier; the wheel assembly is provided with a wheel locking device, and the tie rod assembly and the carrier are hinged at a rod locking device.

Preferably, the wheel assembly includes a mounting block, a locating ring, a connecting arm, a wheel and an armrest; the mounting block is rotatably arranged on a shaft at the side of the carrier, and the locating ring is provided at both ends of the mounting block; There are two connecting arms, the upper ends of the two connecting arms are arranged on the mounting block, and the lower ends of the two connecting arms respectively extend to the lower sides of the two ends of the mounting block; lower end.

Preferably, locking holes along the vertical direction are provided on both sides of the carrier close to the wheel assembly; the wheel locking device includes a first unlocking hook and a first return spring; the first unlocking hook is arranged on On the wheel assembly, the first unlocking hook follows the rotation of the wheel assembly, and the upper end of the first unlocking hook is provided with a first locking pin; the first return spring is arranged between the first locking pin and the wheel assembly.

Preferably, the pull rod assembly includes two telescopic rods, the tops of the two telescopic rods are provided with handles, the bottoms of the two telescopic rods are hinged to the rear end of the loading rack, and the bottom part of the two telescopic rods is connected with fixed arm.

Preferably, the pull rod locking device includes a pull rod retainer, a second unlocking hook and a pull rod lower turn block; a first positioning hole and a second positioning hole are arranged on one side of the pull rod retainer, and the pull rod retainer A rotating groove is provided on the other side of the rotating groove, and the two ends of the rotating groove correspond to the first positioning hole and the second positioning hole respectively; There is a pull rod locking block on one end of the pull rod; the pull rod lower block is arranged in the pull rod clamp and is connected with the bottom of the pull rod assembly. As the pull rod assembly rotates, the pull rod lower block is provided with a second unlocking hook hole. The second unlocking hook passes through the second unlocking hook hole.

Preferably, elastic pressing arms are also arranged on the cargo rack.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art:

In the foldable shopping cart of the present invention, the wheel assembly and the pull rod assembly can be rotated to a parallel position, so that the space occupied by the fold is the least; and in the opened state, they are locked by the wheel locking device and the pull rod locking device respectively, ensuring the stability during use .

Description of drawings

Below in conjunction with accompanying drawing, technical solution of the present invention will be further described:

Accompanying drawing 1 is the structural representation of folding shopping cart of the present invention;

Accompanying drawing 2 is the schematic diagram of the semi-open state of the folding shopping cart of the present invention;

Accompanying drawing 3 is the folding state schematic diagram of the folding shopping cart of the present invention;

Accompanying drawing 4 is the schematic structural diagram of the wheel assembly of the folding shopping cart of the present invention;

Accompanying drawing 5 is the structure diagram of the pull bar locking device of the folding shopping cart of the present invention;

Accompanying drawing 6 is the schematic diagram of the fixed arm of the folding shopping cart of the present invention;

Among them: 1. Cargo rack; 2. Wheel assembly; 3. Pull rod locking device; 4. Elastic cargo arm; 11. Mounting block; 12. Locating ring; 13. Connecting arm; 14. Wheel; 15. Support foot; 16 1. The first unlocking hook; 17. The first return spring; 18. The first locking pin; 21. The telescopic rod; 22. The handle; 23. The fixed arm; 34, the first positioning hole; 35, the second positioning hole; 36, the rotation groove; 37, the locking block of the pulling rod; 38, the second unlocking hook hole.

detailed description

The present invention is described below in conjunction with accompanying drawing.

As shown in Figures 1-6, a foldable shopping cart according to the present invention includes a cargo rack 1, a wheel assembly 2 and a tie rod assembly; there are two wheel assemblies 2, and both wheel assemblies 2 include mounting blocks 11 , locating ring 12, connecting arm 13, wheel 14 and support foot 15; the mounting blocks 11 of two wheel assemblies 2 are respectively rotatably arranged on the axles at both sides of the cargo rack 1, and the locating ring 12 is arranged on the mounting block 11 Both ends prevent the mounting block 11 from moving axially; each wheel assembly 2 has two connecting arms 13, the upper ends of the two connecting arms 13 are arranged on the mounting block 11, and the lower ends of the two connecting arms 13 are respectively Extend to the underside of both ends of the mounting block 11; the wheels 14 and the support feet 15 are respectively arranged at the lower ends of the two connecting arms 13; the two wheel assemblies 2 are provided with corresponding wheel locking devices; The shafts on the side are provided with locking holes (not shown) along the vertical direction at positions close to the wheel assembly 2; the wheel locking device includes a first unlocking hook 16 and a first return spring 17; the first unlocking The draw hook 16 is arranged on the wheel assembly 2, the first unlocking draw hook 16 follows the rotation of the wheel assembly 2, and the upper end of the first unlocking draw hook 16 is provided with a first locking pin 18; the first return spring 17 is arranged between the first locking pin 18 and Between the wheel assembly 2; when the wheel assembly 2 is turned to the vertical direction as a whole, the first locking pin 18 enters the locking holes of the axles on both sides of the cargo rack 1 to lock the wheel assembly 2 so that it cannot rotate; when folding, pull The first unlocking hook 16 can be unlocked; the pull rod assembly includes two telescopic rods 21 parallel to each other. The top is connected with a handle 22, and the bottoms of the two telescopic rods 21 are hinged on the rear end of the cargo rack 1. The bottommost section of the two telescopic rods 21 is connected with a fixed arm 23, and the bottommost section of the two telescopic rods 21 A flange is provided on the top, and a groove is provided in the fixed arm 23. The two telescopic rods 21 cooperate with the grooves in the flange and the fixed arm 23 to keep the two telescopic rods 21 parallel and prevent the fixed arm 23 from sliding up and down; The hinges of the two telescopic rods 21 and the cargo rack 1 are provided with a pull rod locking device 3; each of the pull rod locking devices 3 includes a pull rod clamp 31, a second unlocking hook 32 and a pull rod lower turn block 33 A first positioning hole 34 and a second positioning hole 35 are provided on one side of the pull bar retainer 31, and a rotating groove 36 is provided on the other side of the pull rod retainer 31, and the rotating groove 36 is a quarter Arc-shaped, the two ends of the rotating groove 36 correspond to the first positioning hole 34 and the second positioning hole 35; One end of the pull rod lock block 37 is provided; the pull rod lower block 33 is arranged in the pull rod clamp 31, and is connected with the bottom of the telescopic rod 21, and as the telescopic rod 21 rotates, the pull rod lower block 33 is provided with The second unlocking hook hole 38, the second unlocking hook 32 passes through the second unlocking hook hole 38; the pull bar turns down the block 3 3 According to the needs of opening or folding the car body, rotate with the telescopic rod 21, so that the rod locking block 37 of the second unlocking hook 32 enters the first positioning hole 34 or the second positioning hole 35, and the pull rod is turned down to the block 33 and the telescopic rod 21 Locking; when unlocking, pull the second unlocking pull hook 32 to make the pull bar locking block 37 disengage from the first positioning hole 34 or the second positioning hole 35; Compress the cargo.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art:

In the foldable shopping cart of the present invention, the wheel assembly and the pull rod assembly can be rotated to a parallel position, so that the space occupied by the fold is the least; and in the opened state, they are locked by the wheel locking device and the pull rod locking device respectively, ensuring the stability during use .

The above-mentioned embodiments are only to illustrate the technical conception and characteristics of the present invention. Substantial equivalent changes or modifications shall fall within the protection scope of the present invention.

Claims (4)

1. A foldable shopping cart, characterized in that it includes a cargo rack (1), a wheel assembly (2) and a pull rod assembly; there are two wheel assemblies (2), and the two wheel assemblies (2) are rotatable It is arranged on both sides of the cargo rack (1); the tie rod assembly is hinged at the rear end of the cargo rack (1); the wheel assembly (2) is provided with a wheel locking device, and the hinge of the pull rod assembly and the cargo rack (1) There is a pull rod locking device (3); the wheel assembly (2) includes a mounting block (11), a positioning ring (12), a connecting arm (13), a wheel (14) and a footrest (15); the installation The block (11) is rotatably set on the shaft at the side of the cargo rack (1), and the positioning rings (12) are set at both ends of the mounting block (11); the connecting arm (13) has two, and the two are connected The upper ends of the arms (13) are all set on the mounting block (11), and the lower ends of the two connecting arms (13) respectively extend to the lower sides of both ends of the mounting block (11); the wheels (14) and the support feet (15) They are respectively arranged at the lower ends of the two connecting arms (13); the two sides of the carrier (1) are provided with locking holes along the vertical direction near the wheel assembly (2); the wheel locking device includes a first Unlocking the hook (16) and the first return spring (17); the first unlocking hook (16) is set on the wheel assembly (2), the first unlocking hook (16) follows the rotation of the wheel assembly (2), and the first unlocking A first locking pin (18) is arranged on the upper end of the drag hook (16); the first return spring (17) is arranged between the first locking pin (18) and the wheel assembly (2). 2. The folding shopping cart according to claim 1, characterized in that: the pull rod assembly includes two telescopic rods (21), the top of the two telescopic rods (21) is provided with a handle (22), and the two telescopic rods The bottoms of (21) are all hinged on the rear end of the cargo rack (1), and the bottom joint of the two telescopic rods (21) is connected with a fixed arm (23). 3. The folding shopping cart according to claim 1, characterized in that: the pull rod locking device (3) includes a pull rod retainer (31), a second unlocking hook (32) and a pull rod lower turning block (33); A first positioning hole (34) and a second positioning hole (35) are provided on one side of the draw bar retainer (31), and a rotation groove (36) is provided on the other side of the draw bar retainer (31) , the two ends of the rotating slot (36) correspond to the first positioning hole (34) and the second positioning hole (35) respectively; the second unlocking hook (32) is set on the stopper (31), the second The end of the unlocking hook (32) away from the hook is provided with a pull rod locking block (37); the pull rod down block (33) is set in the pull rod stopper (31) and connected to the bottom of the pull rod assembly, With the rotation of the pull rod assembly, a second unlocking hook hole (38) is provided on the pull rod lower block (33), and the second unlocking hook (32) passes through the second unlocking hook hole (38). 4 . The folding shopping cart according to claim 1 , characterized in that: the loading rack ( 1 ) is further provided with an elastic pressing arm ( 4 ).