Rapidly-folded handrail structure of flat-bed trolley
Through the coordinated design of the limit installation sleeve and the limit pin, the fast folding of the flat-panel trolley handrail is achieved, solving the problems of many hardware accessories and low safety in the prior art, and achieving a low-cost and high-safe handrail structure.
Patent Information
- Application Number
- CN202422508333.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-10-17
AI Technical Summary
The folding handrail structure of existing flatbed carts requires a lot of hardware accessories, which is high in production costs and low in safety.
The matching design of limit mounting sleeves, slide chutes and limit pins is adopted to quickly fold the handrails through plugging and flipping operations, reducing the use of hardware accessories.
Reduces production costs and improves safety in use, making it easy to operate and safe.
Smart Images
Figure CN223086090U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a flat cart, in particular to a handrail structure of a flat cart that can be quickly folded. Background Art
[0002] A folding flat cart refers to a handrail structure that is in a vertical state during use for easy pushing and pulling by users, and can be folded forward and placed on the flat surface of the cart when not in use, thus saving space occupancy. The folding handrail structure of the existing flat cart mainly consists of handrails, bases, folding rods and hardware parts connected to the bottom of the handrails and arranged between the two bases, and arc-shaped chutes arranged on the bases. When folding, it is necessary to step on the folding rod to put down and fold the handrail; this structure has the following disadvantages: 1) It requires more hardware fittings and has a higher production cost; 2) When stepping on it, it is easy to make the flat cart tilt up, and the safety is not high. Therefore, it is urgent to develop a folding handrail with low production cost and safe use. Content of the Utility Model
[0003] The purpose of the utility model is to provide a handrail structure of a flat cart that can be quickly folded. The utility model has the characteristics of low production cost and safe use.
[0004] The technical solution of the utility model: A handrail structure of a flat cart that can be quickly folded includes a folding handrail assembly installed at one end above the flat surface of the cart. The folding handrail assembly includes a handrail main body. At both ends below the handrail main body, there are mounting bases installed on the upper surface of the flat surface of the cart, and the handrail main body rotates and folds relative to the mounting bases; a limiting mounting sleeve for restricting the rotation of the handrail main body is arranged inside the mounting base, chutes corresponding to the position of the limiting mounting sleeve are arranged on the front and back sides of the mounting base, a limiting pin fixed to the bottom of the handrail main body is arranged in the chutes, and the handrail main body is separated from the limiting mounting sleeve in a plug-and-play manner and then rotates and folds around the limiting pin.
[0005] In the aforementioned handrail structure of a flat cart that can be quickly folded, the limiting pin moves up and down along the chute.
[0006] In the aforementioned handrail structure of a flat cart that can be quickly folded, the handrail main body rotates around the limiting pin.
[0007] In the aforementioned handrail structure of a flat cart that can be quickly folded, a notch is arranged on one side of the limiting mounting sleeve; the lowest moving stroke of the handrail main body is lower than the highest end of the limiting mounting sleeve.
[0008] Compared with the prior art, the utility model completes the folding of the armrest by the mutual cooperation among the limit installation sleeve arranged in the installation base, the sliding grooves on the front and rear side walls of the installation base, and the limit pin at the bottom of the armrest main body. Thus, the folding of the armrest can be completed by the way of first plugging and unplugging and then flipping and folding, which is convenient and safe to operate. Moreover, the usage amount of hardware fittings can be greatly reduced, and thus the production cost can be effectively reduced. In summary, the utility model has the characteristics of low production cost and safe use. Brief Description of the Drawings
[0009] Figure 1 Fig. is a schematic structural view of the utility model in a folded state;
[0010] Figure 2 is Figure 1 a partial cross-sectional view of;
[0011] Figure 3 Fig. is a structural view in a use state;
[0012] Figure 4 is Figure 3 a partial cross-sectional view of;
[0013] Figure 5 Fig. is a structural view of the limit installation sleeve.
[0014] The reference signs in the drawings are: 1 - trolley flat plate, 2 - folding armrest assembly, 3 - armrest main body, 4 - installation base, 5 - limit installation sleeve, 6 - sliding groove, 7 - limit pin, 8 - notch. Detailed Description of the Embodiment
[0015] The following further describes the utility model with reference to the drawings and embodiments, but it shall not be used as the basis for limiting the utility model.
[0016] Embodiment. The structure of the armrest of the flat trolley with quick folding is as shown in Figures 1-5 Fig., and it includes a folding armrest assembly 2 installed at one end above the trolley flat plate 1. The folding armrest assembly 2 includes an armrest main body 3. At both ends below the armrest main body 3, there are installation bases 4 installed on the upper surface of the trolley flat plate 1, and the armrest main body 3 rotates and folds relative to the installation base 4. A limit installation sleeve 5 for restricting the rotation of the armrest main body 3 is arranged in the installation base 4. Sliding grooves 6 corresponding to the position of the limit installation sleeve 5 are arranged on the front and rear sides of the installation base 4. A limit pin 7 fixed to the bottom of the armrest main body 3 is arranged in the sliding grooves 6. After the armrest main body 3 is separated from the limit installation sleeve 5 in a plugging and unplugging manner, it rotates and folds around the limit pin 7.
[0017] The limit pin 7 moves up and down along the sliding groove 6.
[0018] The armrest main body 3 rotates around the limit pin 7.
[0019] A notch 8 is provided on one side of the limit installation sleeve 5; the lowest end of the armrest main body 3 has a movement stroke lower than the highest end of the limit installation sleeve 5.
[0020] When the limit pin moves to the top of the sliding groove, the lowest end of the armrest main body is within the height range of the notch of the limit installation sleeve, so that the armrest main body can only be flipped towards the higher side of the limit installation sleeve and cannot be flipped towards the lower side.
[0021] By providing a notch on the side of the limit installation sleeve close to the end of the trolley flat plate, the limit installation sleeve is in a state of being higher on the left and lower on the right (the left side refers to the side close to the flat plate main body). In this way, the height of the sliding groove can be reduced, and the flipping and folding of the armrest can be realized with a lower sliding groove height. Moreover, when the armrest is flipped backward, it will be restricted by the height on the left side and cannot be flipped, thus effectively improving the safety of use and preventing the armrest from being flipped backward due to misoperation (pulling up the armrest).
[0022] The usage method of flipping and folding is as follows: Pull the armrest main body upward so that the armrest main body moves upward along the sliding groove. When the lowest end of the armrest main body is within the height range of the notch, flip the armrest main body to the left so that the armrest main body rotates around the limit pin to complete the flipping and folding of the armrest main body. The higher end of the sleeve main body can also provide support for the armrest main body.
[0023] When it is necessary to resume use, just flip it to the right so that the armrest main body is in a vertical state. The bottom of the armrest main body is inserted into the inside of the sleeve main body, and the lowest end of the armrest main body is below the notch. The limit installation sleeve plays a role in limiting the armrest to prevent flipping.
Claims
1. A quick-foldable flat cart armrest structure, comprising a foldable armrest assembly (2) installed at one end above the cart flat plate (1), characterized in that: The folding armrest assembly (2) includes an armrest main body (3). At both ends below the armrest main body (3), there are mounting bases (4) installed on the upper surface of the cart flat plate (1), and the armrest main body (3) is rotationally folded with the mounting base (4); a limiting mounting sleeve (5) for restricting the rotation of the armrest main body (3) is provided inside the mounting base (4), and chutes (6) corresponding to the position of the limiting mounting sleeve (5) are provided on the front and rear sides of the mounting base (4). A limiting pin (7) fixed to the bottom of the armrest main body (3) is provided in the chute (6). After the armrest main body (3) is separated from the limiting mounting sleeve (5) in a plug-and-play manner, it rotates and folds around the limiting pin (7).
2. The fast-foldable flat cart armrest structure according to claim 1, characterized in that: The limiting pin (7) moves up and down along the chute (6).
3. The quick-foldable flat trolley armrest structure according to claim 1, wherein: The armrest main body (3) rotates around the limiting pin (7).
4. The quick-foldable flat cart armrest structure according to claim 1, wherein: A notch (8) is provided on one side of the limiting mounting sleeve (5); the lowest end of the armrest main body (3) has a movement stroke lower than the highest end of the limiting mounting sleeve (5).