Trunk folding vehicle

By designing a quadrilateral linkage structure and locking mechanism for the luggage folding cart, the problem of existing folding carts being unable to balance luggage placement and portability has been solved, achieving stable luggage installation and the portability of the folding cart.

CN223546407UActive Publication Date: 2025-11-14SHANGHAI ANT FIGHTER ROBOT TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202520034758.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-08
Publication Date
2025-11-14
Estimated Expiration
2035-01-08

AI Technical Summary

Technical Problem

Existing folding bikes have a structural problem that makes them inconvenient to fold or carry when storing luggage, making it difficult to balance the need for both storing luggage and easy folding and carrying.

Method used

A luggage folding vehicle was designed, which adopts a quadrilateral linkage structure consisting of a front frame, a rear frame, a linkage frame, and a support frame. The front and rear frames can be unfolded or folded through the linkage of the locking pull and folding lock. Combined with the locking plate and locking hook, the stability and portability are improved.

Benefits of technology

It achieves stable installation of the suitcase, while reducing its size when folded, making it easy to carry and store, and improving the usability of the folding bike.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a luggage box folding vehicle which comprises a front vehicle frame and a rear vehicle frame arranged on one side of the front vehicle frame, a bracket is installed on the outer side of the lower end of the rear vehicle frame, and a luggage box is erected on the bracket and the rear vehicle frame so as to improve the installation stability of the luggage box. A front frame, a rear frame, a linkage frame and a supporting frame in the device form a quadrilateral connecting rod structure and are rotationally connected in sequence, and therefore folding and unfolding adjustment of the front frame and the rear frame is achieved. The hand pulling handle controls the hand pulling frame to rotate, the first lock hook is inserted into the first lock groove to fix the linkage frame, the upper end of the linkage frame abuts against the inner wall of the rear frame, and therefore the unfolding stability of the front frame and the rear frame is improved. In the folding state, the folding locking piece and the locking piece are matched, clamped and fixed, so that the folding stability of the rear frame and the front frame is improved, the size is reduced, and carrying and storage are convenient. The hand pulling frame is rotationally connected with the second lock hook through the pull rod so as to pull the second lock hook to move, and the second lock hook is separated from the second lock groove.
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Description

Technical Field

[0001] This utility model relates to the field of folding vehicle technology, specifically a luggage folding vehicle. Background Technology

[0002] In recent years, the rapid popularization of folding electric bikes has brought us great convenience. In daily travel, we may need to carry suitcases or other items. However, existing folding bikes are generally small and simple in structure, making it inconvenient to put suitcases in them. On the other hand, folding bikes that can put suitcases in them are too large, making it inconvenient to carry and store them after folding. Therefore, there is a need for a special folding bike for suitcases. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a luggage folding vehicle to solve the problems mentioned in the background art.

[0004] The technical problem solved by this utility model is achieved by the following technical solution: a luggage folding vehicle, including a front frame and a rear frame set on one side of the front frame, wherein a bracket is installed on the lower outer side of the rear frame, and the luggage is placed on the bracket and the rear frame to improve the stability of the luggage installation.

[0005] A linkage frame and a support frame are installed between the front frame and the rear frame to adjust their relative positions. The front frame, the rear frame, the linkage frame and the support frame are arranged in a quadrilateral linkage structure to enable the front frame and the rear frame to be unfolded or folded.

[0006] The upper end of the rear frame is provided with a locking pull member that can lock the linkage frame so that the front frame and the rear frame are kept in the unfolded state. The lower end of the rear frame is provided with a folding lock member that is folded and fixed together with the front frame. The lower end of the front frame is provided with a locking piece that cooperates with the folding lock member. A pull rod is rotatably connected to one side of the locking pull member and is connected to the folding lock member through the pull rod so as to control the movement of the folding lock member through the locking pull member and realize the linkage setting.

[0007] As a further embodiment of this utility model:

[0008] A support is installed on one side of the upper end of the front frame. One end of the linkage frame is rotatably installed on the support, and the other end is rotatably installed on the rear frame. The rear frame has a corresponding slot for the linkage frame. The linkage frame passes through the slot and is inserted into the rear frame, and is rotatably installed on the rear frame through a pin.

[0009] As a further embodiment of this utility model:

[0010] One end of the support frame is rotatably mounted on the lower end of the front frame, and the other end is rotatably mounted on the upper end of the rear frame. The support frame passes through a slot in the rear frame and is rotatably mounted inside the rear frame. The support frame has a bent structure to change the direction of the force exerted by the front frame on the support frame, thereby improving the stability of the front and rear frames in their unfolded state.

[0011] As a further embodiment of this utility model:

[0012] The locking mechanism includes a hand-operated pull frame rotatably mounted on the outer side of the upper end of the rear frame and a first locking hook integrally disposed on the outer side of the hand-operated pull frame. A pull handle is rotatably mounted on the side of the hand-operated pull frame away from the first locking hook to control the rotation of the hand-operated pull frame. A first locking groove is provided on the upper end of the linkage frame corresponding to the first locking hook. The first locking hook is inserted into the first locking groove to restrict the downward rotation of the linkage frame. The outer side of the linkage frame abuts against the inner wall of the rear frame, thereby fixing the linkage frame and realizing the fixation after the front frame and the rear frame are unfolded.

[0013] As a further embodiment of this utility model:

[0014] The folding lock includes a spring rod and a second locking hook integrally disposed on the outside of the spring rod. The spring rod is rotatably mounted inside the rear frame via a spring shaft, and a torsion spring is sleeved on the spring shaft. One end of the torsion spring abuts against the inner wall of the rear frame, and the other end abuts against the spring rod to push the second locking hook to move outward. One end of the pull rod is rotatably connected to the back of the second locking hook, and the other end is rotatably connected to the hand pull frame to limit the second locking hook and can pull the second locking hook to rotate along the spring shaft.

[0015] As a further embodiment of this utility model:

[0016] The rear frame has a slot on one side of the second locking hook, and the locking plate has a second locking groove. The locking plate can be inserted into the slot and engage with the second locking hook. Specifically, when the rear frame and the folding frame are folded, the locking plate is inserted into the slot and pushes the second locking hook to move backward, so that the second locking hook is engaged in the second locking groove, thereby fixing the front frame and the rear frame. When it is necessary to unfold, the operator can pull the handle to control the hand pull frame to rotate outward. The hand pull frame drives the pull rod to move upward, so that the second locking hook disengages from the second locking groove, and the operator can unfold the front frame and the rear frame.

[0017] As a further embodiment of this utility model:

[0018] A seat frame is installed on the upper end of the rear frame, and a seat cushion is fixedly installed on the seat frame for easy seating. The handrail is installed on one side of the seat frame.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: the front frame, rear frame, linkage frame, and support frame in this device form a quadrilateral linkage structure and are rotatably connected in sequence, thereby realizing the folding and unfolding adjustment of the front and rear frames. A handle controls the rotation of the handle frame, and the first locking hook is inserted into the first locking groove to fix the linkage frame. The upper end of the linkage frame abuts against the inner wall of the rear frame, thereby improving the stability of the unfolded front and rear frames. In the folded state, the folding lock and locking piece engage and fix, improving the folding stability of the front and rear frames, reducing the size, and thus facilitating carrying and storage. The handle is rotatably connected to the second locking hook via a pull rod, so that pulling the second locking hook moves it, causing the second locking hook to disengage from the second locking groove, thereby facilitating the unfolding of the front and rear frames. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the luggage installation structure of this utility model (in unfolded state);

[0021] Figure 2 This is a schematic diagram of the unfolded structure of the folding vehicle of this utility model;

[0022] Figure 3 This is a partial cross-sectional view of the folding vehicle of this utility model (in unfolded state).

[0023] Figure 4 This is a schematic diagram of the luggage installation structure of this utility model (folded state);

[0024] Figure 5 This is a partial cross-sectional view of the folding vehicle of this utility model (folded state).

[0025] The diagram shows the following components: 1. Front frame; 2. Rear frame; 3. Linkage frame; 4. Support frame; 5. Tie rod; 6. Hand lever; 7. Spring lever; 11. Locking plate; 12. Support; 13. Second lock slot; 21. Bracket; 22. Luggage compartment; 23. Seat frame; 24. Seat cushion; 31. First lock slot; 61. First lock hook; 62. Hand lever; 71. Second lock hook; 72. Torsion spring. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations.

[0027] like Figures 1-5 As shown,

[0028] This embodiment provides a luggage folding vehicle, including a front frame 1 and a rear frame 2 disposed on one side of the front frame 1. A bracket 21 is installed on the lower outer side of the rear frame 2, and the luggage 22 is placed on the bracket 21 and the rear frame 2 to improve the stability of the luggage 22 installation.

[0029] A linkage frame 3 and a support frame 4 are installed between the front frame 1 and the rear frame 2 to adjust their relative positions. The front frame 1, the rear frame 2, the linkage frame 3 and the support frame 4 form a quadrilateral linkage structure to enable the front frame 1 and the rear frame 2 to be unfolded or folded.

[0030] The upper end of the rear frame 2 is provided with a locking pull member that can lock the linkage frame 3 so that the front frame 1 and the rear frame 2 are kept in the unfolded state. The lower end of the rear frame 2 is provided with a folding lock member that is folded and fixed together with the front frame 1. The lower end of the front frame 1 is provided with a locking piece 11 that cooperates with the folding lock member. A pull rod 5 is rotatably connected to one side of the locking pull member and is connected to the folding lock member through the pull rod 5 so as to control the action of the folding lock member through the locking pull member and realize the linkage setting.

[0031] In this embodiment, a support 12 is installed on one side of the upper end of the front frame 1. One end of the linkage frame 3 is rotatably installed on the support 12, and the other end is rotatably installed on the rear frame 2. The rear frame 2 is provided with a corresponding slot for the linkage frame 3. The linkage frame 3 passes through the slot and is inserted into the rear frame 2, and is rotatably installed on the rear frame 2 by a pin.

[0032] One end of the support frame 4 is rotatably mounted on the lower end of the front frame 1, and the other end is rotatably mounted on the upper end of the rear frame 2. The support frame 4 passes through the slot of the rear frame 2 and is rotatably mounted inside the rear frame 2. The support frame 4 has a bent structure to change the direction of the force exerted by the front frame 1 on the support frame 4, thereby improving the stability of the front frame 1 and the rear frame 2 in the unfolded state.

[0033] In this embodiment, the locking mechanism includes a pull bracket 6 rotatably mounted on the outer side of the upper end of the rear frame 2 and a first locking hook 61 integrally disposed on the outer side of the pull bracket 6. A pull handle 62 is rotatably mounted on the side of the pull bracket 6 away from the first locking hook 61 to control the rotation of the pull bracket 6. The upper end of the linkage frame 3 is provided with a first locking groove 31 corresponding to the first locking hook 61. The first locking hook 61 is inserted into the first locking groove 31 to restrict the downward rotation of the linkage frame 3. The outer side of the linkage frame 3 abuts against the inner wall of the rear frame 2, thereby fixing the linkage frame 3 and realizing the fixation after the front frame 1 and the rear frame 2 are unfolded.

[0034] In this embodiment, the folding lock includes a spring rod 7 and a second locking hook 71 integrally disposed on the outside of the spring rod 7. The spring rod 7 is rotatably mounted inside the rear frame 2 via a spring shaft, and a torsion spring 72 is sleeved on the spring shaft. One end of the torsion spring 72 abuts against the inner wall of the rear frame 2, and the other end abuts against the spring rod 7 to push the second locking hook 71 to move outward. One end of the pull rod 5 is rotatably connected to the back of the second locking hook 71, and the other end is rotatably connected to the hand pull frame 6 to limit the second locking hook 71 and to pull the second locking hook 71 to rotate along the spring shaft.

[0035] In this embodiment, the rear frame 2 has a slot on one side of the second locking hook 71, and the locking piece 11 has a second locking groove 13. The locking piece 11 can be inserted into the slot and engaged with the second locking hook 71. Specifically, when the rear frame 2 and the folding frame are folded, the locking piece 11 is inserted into the slot and pushes the second locking hook 71 to move backward, so that the second locking hook 71 is engaged in the second locking groove 13, thereby fixing the front frame 1 and the rear frame 2. When it needs to be unfolded, the operator can pull the handle 62 to control the pull frame 6 to rotate outward. The pull frame 6 drives the pull rod 5 to move upward, so that the second locking hook 71 disengages from the second locking groove 13, and the operator can unfold the front frame 1 and the rear frame 2.

[0036] In this embodiment, a seat frame 23 is installed on the upper end of the rear frame 2, and a seat cushion 24 is fixedly installed on the seat frame 23 for easy seating. The handrail 6 is installed on one side of the seat frame 23.

[0037] Specifically, the front frame 1, rear frame 2, linkage frame 3, and support frame 4 in this device form a quadrilateral linkage structure, which are sequentially rotatably connected to achieve the folding and unfolding adjustment of the front frame 1 and rear frame 2. The handle 62 controls the rotation of the handle 6, and the first locking hook 61 is inserted into the first locking groove 31 to fix the linkage frame 3. The upper end of the linkage frame 3 abuts against the inner wall of the rear frame 2, thereby improving the stability of the unfolded front frame 1 and rear frame 2. In the folded state, the folding lock and locking piece 11 engage and fix each other, improving the folding stability of the rear frame 2 and front frame 1, reducing the size, and making it easier to carry and store. The handle 6 is rotatably connected to the second locking hook 71 via the pull rod 5, so that pulling the second locking hook 71 moves it, causing the second locking hook 71 to disengage from the second locking groove 13, thereby facilitating the unfolding of the front frame 1 and rear frame 2. Among them, the pull rod 5 is staggered from the linkage frame 3 and the support frame 4 to avoid mutual interference during the unfolding and folding process.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents. It should be noted that, in this document, the use of relational terms such as "first" and "second" is merely used to distinguish one entity or operation from another, and does not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In the absence of further restrictions, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A luggage folding cart, characterized in that: Includes a front frame (1) and a rear frame (2) disposed on one side of the front frame (1), wherein a bracket (21) is installed on the outer side of the lower end of the rear frame (2), and a luggage box (22) is mounted on the bracket (21) and the rear frame (2); A linkage frame (3) and a support frame (4) for adjusting the relative position are installed between the front frame (1) and the rear frame (2). The front frame (1), the rear frame (2), the linkage frame (3) and the support frame (4) form a quadrilateral linkage structure. The upper end of the rear frame (2) is provided with a locking pull member that can lock the linkage frame (3) so that the front frame (1) and the rear frame (2) are kept in the unfolded state. The lower end of the rear frame (2) is provided with a folding lock member that is folded and fixed together with the front frame (1). The lower end of the front frame (1) is provided with a locking piece (11) that cooperates with the folding lock member. A pull rod (5) is rotatably connected to one side of the locking pull member and is connected to the folding lock member through the pull rod (5) so as to control the action of the folding lock member through the locking pull member.

2. The luggage folding cart according to claim 1, characterized in that: A support (12) is installed on one side of the upper end of the front frame (1). One end of the linkage frame (3) is rotatably installed on the support (12), and the other end is rotatably installed on the rear frame (2). The rear frame (2) has a corresponding slot for the linkage frame (3). The linkage frame (3) passes through the slot and is inserted into the rear frame (2), and is rotatably installed on the rear frame (2) through a pin.

3. The luggage folding cart according to claim 2, characterized in that: One end of the support frame (4) is rotatably installed at the lower end of the front frame (1), and the other end is rotatably installed at the upper end of the rear frame (2). The support frame (4) passes through the slot of the rear frame (2) and is rotatably installed inside the rear frame (2). The support frame (4) is a bent structure.

4. The luggage folding cart according to claim 3, characterized in that: The locking mechanism includes a handrail (6) rotatably mounted on the outer side of the upper end of the rear frame (2) and a first locking hook (61) integrally disposed on the outer side of the handrail (6). A hand handle (62) is rotatably mounted on the side of the handrail (6) away from the first locking hook (61). A first locking groove (31) is provided on the upper end of the linkage frame (3) corresponding to the first locking hook (61). The first locking hook (61) is inserted into the first locking groove (31) to restrict the linkage frame (3) from rotating downward. The outer side of the linkage frame (3) abuts against the inner wall of the rear frame (2) to fix the linkage frame (3).

5. The luggage folding cart according to claim 4, characterized in that: The folding lock includes a spring rod (7) and a second locking hook (71) integrally disposed on the outside of the spring rod (7). The spring rod (7) is rotatably installed in the rear frame (2) via a spring shaft, and a torsion spring (72) is sleeved on the spring shaft. One end of the torsion spring (72) abuts against the inner wall of the rear frame (2), and the other side abuts against the spring rod (7). One end of the pull rod (5) is rotatably connected to the back of the second locking hook (71), and the other side is rotatably connected to the hand pull frame (6).

6. The luggage folding cart according to claim 5, characterized in that: The rear frame (2) has a slot on one side of the second locking hook (71), and the locking piece (11) has a second locking groove (13). The locking piece (11) can be inserted into the slot and fastened to the second locking hook (71).

7. The luggage folding cart according to claim 4, characterized in that: The upper end of the rear frame (2) is equipped with a seat frame (23), and a seat cushion (24) is fixedly installed on the seat frame (23) for easy seating. The handrail (6) is installed on one side of the seat frame (23).