A four-wheeled cart with telescopic handle folding structure

Abstract

This utility model discloses a folding structure for a telescopic handle of a four-wheeled trolley, comprising: a trolley body, with a baffle rotatably mounted at the rear end of the trolley body and a movable seat slidably mounted on the trolley body; a telescopic handle, rotatably mounted at the front end of the trolley body, with the roller end of the telescopic handle connected to the movable seat via a connecting rod; when the telescopic handle is folded onto the trolley body, a locking structure secures the telescopic handle to the trolley body. This utility model employs a connecting rod and locking structure, achieving quick and stable folding and fixing when the telescopic handle is folded above the trolley body through the cooperation of a locking block and a locking hole; this helps reduce the trolley's volume when not in use, facilitating storage in small spaces (such as car compartments, lockers, etc.), and improving portability and practicality.

Description

Technical Field

[0001] This utility model relates to a four-wheeled cart, specifically to a four-wheeled cart telescopic handle folding structure. Background Technology

[0002] Four-wheeled carts are common daily necessities or tools, widely used in daily life, logistics transportation, shopping, and other scenarios. However, traditional four-wheeled carts have many problems in their design and use: Many traditional four-wheeled strollers lack a proper folding mechanism, requiring users to perform multiple operations to fold the stroller. The whole process is time-consuming and laborious, which greatly affects the user experience, especially for usage scenarios that require frequent unfolding and folding (such as shopping and home organization).

[0003] Conventional strollers still have the problem of being bulky when folded, and cannot be fully compressed in height or length, making them difficult to store in small spaces (such as car trunks or storage cabinets).

[0004] The handle is usually fixed and cannot be folded, which means that the folded stroller still has a protruding part, increasing the difficulty of storage. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a folding structure for the telescopic handle of a four-wheeled cart, so as to solve the problems existing in the background art.

[0006] The folding structure of the telescopic handle of this utility model four-wheeled trolley is achieved through the following technical solutions, including: The trolley body has a baffle at its rear end and a movable seat that slides on the trolley body. A telescopic handle is rotatably mounted at the front end of the trolley body, and the roller end of the telescopic handle is connected to the movable seat via a connecting rod. When the telescopic handle is folded onto the trolley body, a locking mechanism secures the telescopic handle to the trolley body.

[0007] As a preferred technical solution, the telescopic handle includes a handle body and an adjusting and fixing rod; The handle body is inserted into the adjusting and fixing rod, and a connecting rod is provided between the adjusting and fixing rods, with a locking structure provided on the connecting rod.

[0008] As a preferred technical solution, the locking structure includes a movable groove, movable blocks disposed on both sides of the movable groove, and a movable sleeve; A compression spring is provided between the movable blocks, and the connecting block on the movable block passes through the slide groove of the connecting rod and is connected to the movable sleeve; The outer side of the movable sleeve is provided with a locking block, and the main body of the trolley is provided with a locking hole corresponding to the locking block. When the telescopic handle and the main body of the trolley are in a folded state, they are fixed by the locking block and the locking hole.

[0009] As a preferred technical solution, the other end of the movable block is provided with a locking pin, and the locking pin passes through the movable groove and is placed in the adjustment cavity of the adjusting and fixing rod; The handle body is provided with a locking hole. When the handle body is adjusted in the adjustment cavity of the adjusting rod, the locking pin is inserted into the locking hole of the handle body, thereby realizing the adjustment of the telescopic handle.

[0010] As a preferred technical solution, a push block is provided on the inner side of the movable sleeve, which is used to push the movable sleeve.

[0011] The beneficial effects of this utility model are: This utility model adopts a linkage and locking structure. When the telescopic handle is folded to the top of the trolley body, the locking block and locking hole work together to achieve quick and stable folding and fixing. This helps to reduce the size of the trolley when it is not in use, making it convenient to store in small spaces (such as carriages, lockers, etc.), and improving portability and practicality.

[0012] The telescopic handle of this invention, through the cooperation of the handle body and the adjusting fixing rod, plus the fixing mechanism of the locking pin and the locking hole, realizes the free adjustment of the handle length; it can adapt to the stroller usage needs of users of different heights, improving the applicability of the product and the user experience.

[0013] During the folding process, this invention allows users to release the locking pin and adjust the handle simply by pressing the push block inward, and then easily complete the folding under the action of the linkage. This simplified operation greatly improves user efficiency and reduces operational complexity, making it especially suitable for usage scenarios that require frequent folding and unfolding. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the folding structure of this utility model; Figure 3 This is a schematic diagram of the locking structure of this utility model.

[0016] Explanation of reference numerals in the attached figures: 1. Cart body; 2. Telescopic handle; 3. Baffle; 4. Movable seat; 5. Connecting rod; 6. Handle body; 7. Adjusting and fixing rod; 8. Connecting rod; 9. Movable groove; 10. Movable block; 11. Movable sleeve; 12. Compression spring; 13. Locking block; 14. Locking hole; 15. Locking pin; 16. Adjustment cavity; 17. Locking hole; 18. Push block. Detailed Implementation

[0017] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0018] like Figures 1-3 As shown, the present invention provides a four-wheeled cart telescopic handle folding structure, comprising: The trolley body 1 has a baffle 3 rotatably mounted at the rear end of the four-wheeled trolley body 1, and a movable seat 4 is slidably mounted on the trolley body 1. Telescopic handle 2, which is rotatably mounted at the front end of the trolley body 1, and the roller end of the telescopic handle 2 is connected to the movable seat 4 by a connecting rod 5; When the telescopic handle 2 is folded onto the trolley body 1, the telescopic handle 2 is fixed to the trolley body 1 through a locking structure.

[0019] The telescopic handle 2 includes a handle body 6 and an adjusting and fixing rod 7; The handle body 6 is inserted into the adjusting and fixing rod 7, and a connecting rod 8 is provided between the adjusting and fixing rod 7, with a locking structure provided on the connecting rod 8.

[0020] In order to achieve the function of folding and locking, in this embodiment, the locking structure includes a movable groove 9, movable blocks 10 disposed on both sides of the movable groove 9, and a movable sleeve 11; A compression spring 12 is provided between the movable blocks 10, and the connecting block on the movable block 10 passes through the slide groove of the connecting rod 8 and is connected to the movable sleeve 11. The outer side of the movable sleeve 11 is provided with a locking block 13, and the trolley body 1 is provided with a locking hole 14 corresponding to the locking block 13. When the telescopic handle 2 and the trolley body 1 are in a folded state, they are fixed by the locking block 13 and the locking hole 14.

[0021] In order to realize the extension and retraction function of the handle, in this embodiment, the other end of the movable block 10 is provided with a locking pin 15, and the locking pin 15 passes through the movable groove 9 and is placed in the adjustment cavity 16 of the adjustment fixing rod 7. The handle body 6 is provided with a locking hole 17. When the handle body 6 is adjusted in the adjustment cavity 16 of the adjustment fixing rod 7, the locking pin 15 is inserted into the locking hole 17 of the handle body 6, thereby realizing the adjustment of the telescopic handle 2.

[0022] To facilitate the adjustment of the movable sleeve, in this embodiment, a push block 18 is provided on the inner side of the movable sleeve 11, so as to push the movable sleeve 11.

[0023] When folding, this utility model pushes the push block inward, causing the movable block to slide inward, thereby causing the locking pin inserted into the locking hole to retract, and the handle body to retract into the adjusting and fixing rod. Then, by pushing the movable seat, the telescopic handle is folded and positioned above the trolley body under the action of the connecting rod. Then, by pushing the push block inward again, the locking block on the movable sleeve is placed in the trolley's locking hole, and then locking is achieved under the action of the compression spring.

[0024] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A folding structure for a telescopic handle of a four-wheeled cart, characterized in that, include: The four-wheeled cart body (1) has a baffle (3) rotatably mounted at its rear end, and a movable seat (4) is slidably mounted on the cart body (1). Telescopic handle (2), the telescopic handle (2) is rotatably disposed at the front end of the trolley body (1), and the roller end of the telescopic handle (2) is connected to the movable seat (4) by a connecting rod (5); When the telescopic handle (2) is folded onto the trolley body (1), the telescopic handle (2) and the trolley body (1) are fixed together by a locking structure.

2. The four-wheeled trolley telescopic handle folding structure according to claim 1, characterized in that: The telescopic handle (2) includes a handle body (6) and an adjusting and fixing rod (7); The handle body (6) is inserted into the adjusting and fixing rod (7), and a connecting rod (8) is provided between the adjusting and fixing rod (7), with a locking structure provided on the connecting rod (8).

3. The four-wheeled cart telescopic handle folding structure according to claim 2, characterized in that: The locking structure includes a movable groove (9), movable blocks (10) disposed on both sides of the movable groove (9), and a movable sleeve (11); A compression spring (12) is provided between the movable blocks (10) and the connecting block on the movable block (10) passes through the groove of the connecting rod (8) and is connected to the movable sleeve (11); The movable sleeve (11) is provided with a locking block (13) on the outside, and the trolley body (1) is provided with a locking hole (14) corresponding to the locking block (13). When the telescopic handle (2) and the trolley body (1) are in a folded state, they are fixed by the locking block (13) and the locking hole (14).

4. The four-wheeled cart telescopic handle folding structure according to claim 3, characterized in that: The other end of the movable block (10) is provided with a locking pin (15), and the locking pin (15) passes through the movable groove (9) and is placed in the adjustment cavity (16) of the adjustment fixing rod (7); The handle body (6) is provided with a locking hole (17). When the handle body (6) is adjusted in the adjustment cavity (16) of the adjustment fixing rod (7), the locking pin (15) is inserted into the locking hole (17) of the handle body (6), thereby realizing the adjustment of the telescopic handle (2).

5. The four-wheeled cart telescopic handle folding structure according to claim 3, characterized in that: The inner side of the movable sleeve (11) is provided with a push block (18) to push the movable sleeve (11).

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