Anti-pinch structure of folding chair

Abstract

The utility model discloses a clamping injury prevention structure of a folding chair, and relates to the field of folding chairs, the clamping injury prevention structure comprises a rack, a seat surface, a protection assembly and a mounting assembly, and pressing plates on the outer surfaces of two mounting blocks are held at the same time, so that a transmission rod drives a rotating plate to rotate; a rotating plate drives a connecting block to move towards one side far away from a rotating rod so as to drive a soft bulge on the outer surface of an extrusion block to be separated from teeth on the outer surface of the rotating rod, so that the rotating rod is unlocked, the two rotating rods can be rotationally folded, and the unlocking rack is folded; by limiting the hands of a user to hold the two pressing plates, the problem that the user mistakenly holds a single rod piece in the rack for folding and storage to cause clamping injury is avoided, and when maintenance needs to be carried out or a protection assembly does not need to be used, the insertion rod is pulled out, the insertion rod is driven to be separated from the rack, then a butt joint block is pulled out, and the user can conveniently carry out maintenance. And the butt joint block is separated from the mounting block, so that the protection assembly is disassembled, and maintenance is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of folding chairs, and particularly relates to an anti-pinching structure for folding chairs. Background Art

[0002] A folding chair is a portable seat designed for convenient folding and carrying. It is usually made of lightweight materials and equipped with a foldable bracket and seat part, allowing users to easily fold it up for storage and transportation. Folding chairs are widely used in various occasions such as outdoor activities, picnics, camping, sports events, concerts, and indoor temporary seating arrangements.

[0003] Existing folding chairs include a frame and a seat surface. When in use, users need to hold the frame and then fix the seat part by stepping on it or other means. Thus, by opening and holding the seat part of the chair, and the same steps are involved during storage. By folding up the frame, the folding chair can be folded and stored.

[0004] When using existing folding chairs, users need to hold the frame to open or store the folding mechanism. However, during the storage process, the internal rods of the frame will be folded up. When users hold the frame, if they do not correctly hold the frame part but only hold some of the rods, it will cause the rods to fold up during the process of folding the frame, resulting in users being pinched and injured, which has certain potential safety hazards. Content of the Utility Model

[0005] (I) Technical Problems to be Solved

[0006] In view of the above problems existing in the prior art, the utility model provides an anti-pinching structure for folding chairs.

[0007] (II) Technical Solutions

[0008] To achieve the above objectives, the utility model is realized through the following technical solutions: An anti-pinching structure for folding chairs includes a frame, on the outer surface of which a seat surface is provided, and a protection component is provided on the outer surface of the frame;

[0009] The protection component includes two mounting blocks provided on the outer surface of the frame. A rotating rod is hinged inside the mounting block. One adjacent end of the two rotating rods is hinged. Two transmission rods are inserted inside the mounting block. One end of the transmission rod close to the rotating rod is hinged with a rotating plate. One adjacent end of the two rotating plates is hinged through a pin. A connecting block is fixedly connected to the outer surface of the pin at the hinged part of the two rotating plates. One end of the connecting block close to the rotating rod is fixedly connected with a pressing block. A compression spring is fixedly connected between the end of the connecting block far from the rotating rod and the inner wall of the mounting block;

[0010] An installation component is provided on the outer surface of the mounting block;

[0011] The mounting assembly includes a mating block that is movably connected to the mounting block. A rod is inserted inside the mating block, and a connecting plate is fixedly connected to the outer surface of the rod. A tension spring is fixedly connected between the connecting plate and the mating block.

[0012] As a preferred embodiment of the anti-pinch structure for a folding chair described in this utility model, a pressing plate is slidably connected to the end of the two transmission rods away from the rotating plate, and a rectangular groove for the movement of the transmission rods is provided on the outer surface of the mounting block.

[0013] As a preferred embodiment of the anti-pinch structure for a folding chair described in this utility model, the end of the rotating rod near the pressing block is provided with teeth, and the outer surface of the pressing block is provided with a soft protrusion that cooperates with the outer surface of the rotating rod. In the initial state, the rotating rod is tilted towards one side of the rotating rod.

[0014] As a preferred embodiment of the anti-pinch structure for a folding chair described in this utility model, the mounting block is provided with a limiting groove for sliding the connecting block.

[0015] As a preferred embodiment of the anti-pinch structure for a folding chair described in this utility model, the outer surface of the frame is provided with a socket hole that mates with the plug rod, the mounting block is provided with a plug groove on the side near the docking block, and the outer surface of the docking block is provided with a plug protrusion that mates with the plug groove.

[0016] As a preferred embodiment of the anti-pinch structure for a folding chair described in this utility model, two baffles are fixedly connected to the side of the connecting block away from the mounting block, the inner side of the baffles is provided with a limiting groove, and a limiting block that cooperates with the limiting groove is fixedly connected to the outer surface of the connecting plate.

[0017] (III) Beneficial Effects

[0018] This utility model provides a structure to prevent pinching injuries on a folding chair. It has the following beneficial effects:

[0019] 1. By simultaneously holding the pressing plates on the outer surfaces of the two mounting blocks, the transmission rod drives the rotating plate to rotate. The rotating plate drives the connecting block to move away from the rotating rod, thereby causing the soft protrusions on the outer surface of the pressing block to separate from the teeth on the outer surface of the rotating rod, thus unlocking the rotating rod. This allows the two rotating rods to rotate and fold, thereby unlocking the frame and enabling it to fold. By restricting the user's hands to hold both pressing plates, the problem of pinching injuries caused by the user mistakenly holding a single rod inside the frame for folding and storage is avoided.

[0020] 2. When maintenance is required or the protective components are not needed, pull out the insertion rod to separate it from the insertion hole on the outer surface of the frame, and then pull out the docking block to separate it from the mounting block, thereby disassembling the protective components for easy maintenance. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the structure of the protective component of this utility model.

[0024] Figure 3 This is an exploded structural diagram of the rotating rod of this utility model.

[0025] Figure 4 This is a cross-sectional structural diagram of the rotating plate of this utility model.

[0026] Figure 5 This is an exploded structural diagram of the mounting component of this utility model.

[0027] In the diagram, 1 is the seat surface; 2 is the frame; 3 is the protective assembly; 301 is the mounting block; 302 is the rotating rod; 303 is the pressing plate; 304 is the transmission rod; 305 is the rotating plate; 306 is the connecting block; 307 is the pressing block; 308 is the compression spring; 4 is the mounting assembly; 401 is the connecting plate; 402 is the insertion rod; 403 is the tension spring; 404 is the docking block; and 405 is the baffle. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0029] Example 1

[0030] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4This is the first embodiment of the present invention, which provides a folding chair anti-pinch structure, including a frame 2, a seat surface 1 on the outer surface of the frame 2, and a protective component 3 on the outer surface of the frame 2. The protective component 3 includes two mounting blocks 301 disposed on the outer surface of the frame 2. A rotating rod 302 is hinged inside the mounting block 301. The adjacent ends of the two rotating rods 302 are hinged together. Two transmission rods 304 are inserted inside the mounting block 301. A rotating plate 305 is hinged to the end of the transmission rod 304 near the rotating rod 302. The adjacent ends of the two rotating plates 305 are hinged together by a pin. A connecting block 306 is fixedly connected to the outer surface of the pin at the hinge part of the two rotating plates 305. A compression block 307 is fixedly connected to the end of the connecting block 306 near the rotating rod 302. A compression spring 308 is fixedly connected between the end of the connecting block 306 away from the rotating rod 302 and the inner wall of the mounting block 301.

[0031] Specifically, a pressing plate 303 is slidably connected to the end of the two transmission rods 304 away from the rotating plate 305. A rectangular groove for the movement of the transmission rods 304 is provided on the outer surface of the mounting block 301. A tooth is provided at the end of the rotating rod 302 near the pressing block 307. A soft protrusion that mates with the outer surface of the pressing block 307 is provided on the outer surface of the rotating rod 302. In the initial state, the rotating rod 302 is tilted to one side. A limiting groove for the sliding of the connecting block 306 is provided inside the mounting block 301.

[0032] Furthermore, by simultaneously holding the pressing plates 303 on the outer surfaces of the two mounting blocks 301, the rotating plate 305 is driven to rotate via the transmission rod 304. When the rotating plate 305 rotates, the connecting block 306 moves away from the rotating rod 302. When the connecting block 306 moves, it causes the soft protrusion on the outer surface of the pressing block 307 to separate from the teeth on the outer surface of the rotating rod 302, thereby unlocking the rotating rod 302. At this time, when the frame 2 is folded and stored, the two rotating rods 302 can be folded together, thereby unlocking the frame 2. When unlocking, the user's hands are restricted from holding both pressing plates 303, thus avoiding the phenomenon of the frame 2 being pinched when the user mistakenly holds a single rod inside the frame 2.

[0033] Example 2

[0034] Reference Figure 1 , Figure 2 and Figure 5This is the second embodiment of the present invention. This embodiment is based on the previous embodiment. The outer surface of the mounting block 301 is provided with a mounting component 4. The mounting component 4 includes a docking block 404 that is movably connected to the mounting block 301. A plug rod 402 is inserted inside the docking block 404. A connecting plate 401 is fixedly connected to the outer surface of the plug rod 402. A tension spring 403 is fixedly connected between the connecting plate 401 and the docking block 404.

[0035] Specifically, the outer surface of the frame 2 is provided with a socket that mates with the plug rod 402, the mounting block 301 is provided with a plug groove on the side near the docking block 404, the outer surface of the docking block 404 is provided with a plug protrusion that mates with the plug groove, and two baffles 405 are fixedly connected to the side of the docking block 404 away from the mounting block 301. The inner side of the baffles 405 is provided with a limit groove, and the outer surface of the connecting plate 401 is fixedly connected with a limit block that mates with the limit groove.

[0036] Furthermore, when maintenance is required or the protective component 3 is not needed, the insert rod 402 is pulled out, causing it to separate from the insertion hole on the outer surface of the frame 2. Then, the docking block 404 is pulled out, separating it from the mounting block 301, thereby disassembling the protective component 3 for convenient maintenance.

[0037] Working principle: When using the folding chair and needing to fold it away, simultaneously hold the pressing plates 303 on the outer surfaces of both mounting blocks 301. This drives the rotating plate 305 to rotate via the transmission rod 304. As the rotating plate 305 rotates, it moves the connecting block 306 away from the rotating rod 302. This movement of the connecting block 306 causes the soft protrusions on the outer surface of the pressing block 307 to separate from the teeth on the outer surface of the rotating rod 302, thus unlocking the rotating rod 302. At this point, when the frame 2 is folded and folded away, the two rotating rods 302 can move together. The folding mechanism allows the frame 2 to be folded, and during unlocking, the user's hands are restricted from holding both pressing plates 303. This prevents the user from accidentally gripping a single rod inside the frame 2, which could cause injury when the frame 2 is folded up. When maintenance is required or the protective component 3 is no longer needed, the insertion rod 402 is pulled out, causing it to separate from the insertion hole on the outer surface of the frame 2. Then, the docking block 404 is pulled out, separating it from the mounting block 301. This allows the protective component 3 to be disassembled for easy maintenance, and finally, the folding chair can be used.

[0038] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A folding chair anti-pinch structure, comprising a frame (2), characterized in that: The outer surface of the frame (2) is provided with a seat surface (1), and the outer surface of the frame (2) is provided with a protective component (3); The protective assembly (3) includes two mounting blocks (301) disposed on the outer surface of the frame (2). A rotating rod (302) is hinged inside the mounting block (301). The two rotating rods (302) are hinged at adjacent ends. Two transmission rods (304) are interspersed inside the mounting block (301). A rotating plate (305) is hinged at the end of the transmission rod (304) near the rotating rod (302). The two rotating plates (305) are hinged at adjacent ends by a pin. A connecting block (306) is fixedly connected to the outer surface of the pin at the hinge part of the two rotating plates (305). A compression block (307) is fixedly connected to the end of the connecting block (306) near the rotating rod (302). A compression spring (308) is fixedly connected between the end of the connecting block (306) away from the rotating rod (302) and the inner wall of the mounting block (301). The outer surface of the mounting block (301) is provided with a mounting component (4); The mounting assembly (4) includes a docking block (404) movably connected to the mounting block (301). A plug rod (402) is inserted inside the docking block (404). A connecting plate (401) is fixedly connected to the outer surface of the plug rod (402). A tension spring (403) is fixedly connected between the connecting plate (401) and the docking block (404).

2. The anti-pinch structure for a folding chair according to claim 1, characterized in that: The two transmission rods (304) are slidably connected to a pressing plate (303) at one end away from the rotating plate (305), and the outer surface of the mounting block (301) is provided with a rectangular groove for the movement of the transmission rods (304).

3. The anti-pinch structure for a folding chair according to claim 2, characterized in that: The rotating rod (302) has teeth at one end near the extrusion block (307), and the outer surface of the extrusion block (307) has soft protrusions that cooperate with the outer surface of the rotating rod (302). In the initial state, the rotating rod (302) is tilted to one side.

4. The anti-pinch structure for a folding chair according to claim 3, characterized in that: The mounting block (301) is provided with a limiting groove inside for the sliding of the connecting block (306).

5. The anti-pinch structure for a folding chair according to claim 4, characterized in that: The outer surface of the frame (2) is provided with a socket hole that mates with the plug rod (402). The mounting block (301) is provided with a plug groove on the side near the docking block (404). The outer surface of the docking block (404) is provided with a plug protrusion that mates with the plug groove.

6. The anti-pinch structure for a folding chair according to claim 5, characterized in that: Two baffles (405) are fixedly connected to the side of the docking block (404) away from the mounting block (301). The inner side of the baffle (405) is provided with a limiting groove, and a limiting block that cooperates with the limiting groove is fixedly connected to the outer surface of the connecting plate (401).

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