Linkage type folding cart

Abstract

The utility model relates to the technical field of carts, and discloses a linkage type folding cart which comprises a bottom frame pipe, bottom frame fixing seats are symmetrically and movably arranged on the bottom frame pipe, a cart folding moving pipe is arranged on one side of the bottom frame pipe, and the cart folding moving pipe is fixedly connected with the two bottom frame fixing seats at the same time. A bottom frame supporting pipe is arranged between the bottom frame pipe and the stroller folding movement pipe, the lower joints are symmetrically arranged on the two sides of the stroller folding movement pipe, the top ends of the lower joints are movably connected with the upper joints, and the upper supporting pipe is movably connected to the handlebar bending base through the top small joint. The upper supporting pipe is movably connected with a panel through a top joint, the backrest connecting seat is arranged on the stroller folding movement pipe, and a backrest bend is movably arranged on the backrest connecting seat. The stroller effectively avoids the problems that due to the fact that the stroller structure is complex and folding operation is tedious, great inconvenience is caused to a user, and the stroller can be folded conveniently. And the user experience is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a trolley technical field especially relates to a linkage type folding trolley. BACKGROUND

[0002] The trolley is a kind of handling vehicle with human power to push and pull.The trolley has single-wheel, two-wheel, three-wheel and four-wheel division.The trolley body material of traditional trolley is generally wooden, and the trolley body material of modern production is generally metal.

[0003] In order to reduce the space occupation when trolley is idle and facilitate user to carry, most trolleys have folding function, since folding structure of different trolleys is different, its folding principle is not identical, most trolley structures are more complex, folding operation is more tedious, greatly inconvenient for user, greatly reduce user experience, for this, we provide a linkage type folding trolley. UTILITY MODEL CONTENTS

[0004] To solve the problem of the above background art that the trolley structure is relatively complex, folding operation is relatively tedious, greatly inconvenient for user, greatly reduces user experience, the utility model provides a linkage type folding trolley.

[0005] The utility model adopts the following technical scheme to realize: a linkage type folding trolley, comprising:

[0006] Bottom bracket pipe, the bottom bracket pipe is symmetrically movably provided with bottom bracket fixed seat, one side of the bottom bracket pipe is provided with trolley movement pipe, and the trolley movement pipe is fixedly connected with two groups of bottom bracket fixed seats simultaneously, bottom bracket support pipe is arranged between the bottom bracket pipe and the trolley movement pipe;

[0007] Lower joint, the lower joint is symmetrically arranged at the two sides of trolley movement pipe, the top of the lower joint is movably connected with upper joint, the upper joint is provided with handle pipe, and the top of two groups of handle pipes is provided with same handle bending seat;

[0008] Upper support pipe, the upper support pipe is movably connected on handle bending seat through top small joint, and the upper support pipe is movably connected with panel through top joint;

[0009] Backrest connecting seat, the backrest connecting seat is arranged on trolley movement pipe, and backrest bending is movably arranged on the backrest connecting seat;

[0010] Two groups of rear wheels, two groups of rear wheels are movably connected at the two sides of trolley movement pipe;

[0011] Two groups of wheel seat fixed seats, two groups of wheel seat fixed seats are movably connected at the two sides of bottom bracket pipe, and front wheel is movably connected on the wheel seat fixed seat.

[0012] As a further improvement to the above solution, a tow bar connecting seat is fixedly connected to the vehicle retraction tube, and a tow bar is rotatably connected to the tow bar connecting seat.

[0013] As a further improvement to the above solution, a basket seat is provided on the handle tube, and a cart-retracting handle is also provided on the handle tube.

[0014] As a further improvement to the above solution, a handbrake lever is added to the handlebar bending seat.

[0015] As a further improvement to the above solution, a retraction linkage flat iron is hinged between the retraction movement tube and the lower joint.

[0016] As a further improvement to the above solution, both the rear and front wheels are fitted with anti-skid rubber tires.

[0017] As a further improvement to the above solution, the diameter of the rear wheel is larger than that of the front wheel.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] This invention enables the trolley to be folded inwards quickly and easily by pressing down on the handle bending seat with both hands, and by the movable connections between the panel and the upper support tube, between the base frame fixing seat and the base frame tube, between the base frame tube and the folding motion tube and the base frame support tube, between the folding motion tube and the lower joint and the folding linkage flat iron, and between the upper joint and the lower joint. This effectively avoids the problems caused by the complex structure of the trolley and the cumbersome folding operation, which greatly inconvenience the user and significantly reduce the user experience. It is highly practical. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Explanation of key symbols:

[0022] 1. Base frame tube; 2. Base frame mounting bracket; 3. Retraction movement tube; 4. Base frame support tube; 5. Lower joint; 6. Upper joint; 7. Handle tube; 8. Handle bending bracket; 9. Upper support tube; 10. Panel; 11. Backrest connecting bracket; 12. Backrest bending; 13. Rear wheel; 14. Wheel seat mounting bracket; 15. Front wheel; 16. Trailer arm connecting bracket; 17. Trailer arm; 18. Basket seat; 19. Retraction handle; 20. Handbrake lever; 21. Retraction linkage flat iron. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0024] Example 1:

[0025] Please combine Figure 1 This embodiment of a folding trolley includes:

[0026] The base frame tube 1 has a base frame fixing seat 2 symmetrically and movably arranged on it. A folding motion tube 3 is arranged on one side of the base frame tube 1 and the folding motion tube 3 is fixedly connected to both sets of base frame fixing seats 2. A base frame support tube 4 is arranged between the base frame tube 1 and the folding motion tube 3. A tow bar connecting seat 16 is fixedly connected to the folding motion tube 3. A tow bar 17 is rotatably connected to the tow bar connecting seat 16. The tow bar 17 is convenient for connecting a bicycle to tow the trolley. By rotatably connecting the tow bar 17 to the tow bar connecting seat 16, it is convenient to store the trolley when it is not in use.

[0027] The lower joint 5 is symmetrically arranged on both sides of the trolley retraction tube 3. The top of the lower joint 5 is movably connected to the upper joint 6. The upper joint 6 is equipped with a handle tube 7. The top of the two sets of handle tubes 7 is equipped with the same handle bending seat 8. The handle tube 7 is equipped with a basket seat 18 and a trolley retraction handle 19. The basket seat 18 is convenient for placing a basket. The trolley retraction handle 19 is convenient for adjusting the height of the handle bending seat 8. A handbrake handle 20 is added to the handle bending seat 8 for emergency braking of the trolley. The trolley retraction tube 3 and the lower joint 5 are hinged with a trolley retraction linkage flat iron 21, which facilitates linkage when retracting the trolley, improving the efficiency and convenience of retracting the trolley.

[0028] The upper support tube 9 is movably connected to the handle bending seat 8 via a top small joint, and a panel 10 is movably connected to the upper support tube 9 via a top joint.

[0029] Backrest connecting seat 11 is mounted on the retraction movement tube 3, and a backrest bend 12 is movably mounted on the backrest connecting seat 11.

[0030] Two sets of rear wheels 13 are symmetrically connected to both sides of the retraction movement tube 3.

[0031] Two sets of wheel seat fixing seats 14 are symmetrically and movably connected to both sides of the base frame tube 1. The front wheel 15 and the rear wheel 13 are rotatably connected to the wheel seat fixing seats 14. Anti-slip rubber tires are fitted on the front wheel 15, which can increase the friction between the trolley and the ground and improve the stability of the trolley when moving.

[0032] The implementation principle of a linkage folding trolley in this application embodiment is as follows: by pressing down the handle bending seat 8 with both hands, and through the movable connection between the panel 10 and the upper support tube 9, the movable connection between the base frame fixing seat 2 and the base frame tube 1, the movable connection between the base frame tube 1 and the folding movement tube 3 and the base frame support tube 4, the movable connection between the folding movement tube 3 and the lower joint 5 and the folding linkage flat iron 21, and the movable connection between the upper joint 6 and the lower joint 5, the trolley can be folded inward simply and quickly, and the backrest connecting seat 11 can be folded through the backrest bending 12.

[0033] Example 2:

[0034] This embodiment is an improvement on embodiment 1, in that the diameter of the rear wheel 13 is larger than that of the front wheel 15, which can increase the support strength for the trolley.

[0035] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A folding and collapsing trolley, characterized in that, include: The base frame tube (1) is symmetrically and movably provided with base frame fixing seats (2). A retraction movement tube (3) is provided on one side of the base frame tube (1) and the retraction movement tube (3) is simultaneously fixedly connected to two sets of base frame fixing seats (2). A base frame support tube (4) is provided between the base frame tube (1) and the retraction movement tube (3). The lower joint (5) is symmetrically arranged on both sides of the retraction movement tube (3). The top end of the lower joint (5) is movably connected to the upper joint (6). The upper joint (6) is provided with a handle tube (7). The top ends of the two sets of handle tubes (7) are provided with the same handle bending seat (8). The upper support tube (9) is movably connected to the handle bending seat (8) via a top small joint, and a panel (10) is movably connected to the upper support tube (9) via a top joint. Backrest connecting seat (11), the backrest connecting seat (11) is set on the retraction movement tube (3), and a backrest bend (12) is movably arranged on the backrest connecting seat (11); Two sets of rear wheels (13) are symmetrically connected to both sides of the retraction movement tube (3); Two sets of wheel seat fixing seats (14) are symmetrically and movably connected to both sides of the base frame tube (1), and a front wheel (15) is rotatably connected to the wheel seat fixing seat (14).

2. The linked folding trolley as described in claim 1, characterized in that, The vehicle retraction tube (3) is fixedly connected to a tow rod connecting seat (16), and a tow rod (17) is rotatably connected to the tow rod connecting seat (16).

3. The linked folding trolley as described in claim 1, characterized in that, The handle tube (7) is provided with a basket seat (18) and a cart-retracting handle (19).

4. The linked folding trolley as described in claim 1, characterized in that, A handbrake lever (20) is provided on the handle bending seat (8).

5. A folding trolley as described in claim 1, characterized in that, The retraction movement tube (3) and the lower joint (5) are hinged together by a retraction linkage flat iron (21).

6. The linked folding trolley as described in claim 1, characterized in that, Both the rear wheel (13) and the front wheel (15) are fitted with anti-skid rubber tires.

7. A folding trolley as described in claim 1, characterized in that, The diameter of the rear wheel (13) is larger than that of the front wheel (15).

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