A portable folding chair

Abstract

The utility model discloses a portable folding chair, including four around support column, cushion, both sides handrail, be provided with two cross setting's connecting rod between every two adjacent support column, connecting rod is provided with four groups, support column top is provided with the mounting column, the bottom all around of cushion is provided with the sliding sleeve, the sliding sleeve is sliding connection with mounting column, rear mounting column is provided with the rotating piece of rotation, the utility model: through setting two cross connecting rods between every two adjacent support column, and utilize the hinged link to realize the rotary connection of connecting rod middle end, cooperate support column bottom first connecting bolt with the rotary connection of connecting rod bottom, the rotary connection of sliding sleeve inboard second connecting bolt with connecting rod top, when folding, inboard push support column can drive connecting rod around hinged link contraction, pull sliding sleeve along mounting column upward sliding simultaneously, make support column, connecting rod and cushion close together, reduce overall extension length greatly.

Description

Technical Field

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

[0002] Folding chairs are a type of seating product that can shrink in size through a folding structure. They are widely used in various scenarios such as home leisure, outdoor camping, temporary office use, and sports event spectator seating. Their core feature is that they can be folded to reduce the space occupied when not in use, making them convenient to store and move, saving storage space for users, and making them easy to carry to different places of use to meet diverse usage needs.

[0003] Existing folding chairs typically fold by bringing the two side support legs together or by flipping the seat and support frame together along a single axis to form a flat structure for storage. While this design achieves a certain degree of space compression and is easier to store than non-folding chairs, in actual use, the support legs retain most of their original length after being brought together, and the seat and support frame can only fit together in one direction when flipped, making it impossible to further compress the vertical or horizontal dimensions. As a result, the folded flat structure still has a relatively wide width, making it difficult to fit into small spaces such as ordinary backpacks or corners of car trunks, thus affecting portability. It is especially unsuitable for scenarios with high requirements for equipment volume, such as hiking, camping, and short trips. Utility Model Content

[0004] The purpose of this invention is to provide a portable folding chair to solve the problem mentioned in the background art that the folded plate structure still has a relatively wide width.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A portable folding chair includes four supporting columns, a seat cushion, and two armrests on both sides. Two cross-connecting rods are provided between every two adjacent supporting columns, and there are four sets of connecting rods.

[0007] The support column is provided with a mounting column at the top, and the bottom of the cushion is provided with a sliding sleeve around the perimeter. The sliding sleeve is slidably connected to the mounting column, and a rotating component is rotatably provided on the mounting column at the rear.

[0008] In a preferred embodiment of this utility model, a hinge rod is provided at the middle position of the two connecting rods, and the hinge rod is rotatably connected to the middle position of the two connecting rods.

[0009] In a preferred embodiment of the present invention, a first connecting bolt is provided on the inner side of the bottom of the support column, and the first connecting bolt is rotatably connected to the bottom of the connecting rod.

[0010] In a preferred embodiment of this utility model, a second connecting bolt is provided on the inner side of the sliding sleeve, and the second connecting bolt is rotatably connected to the top of the connecting rod.

[0011] In a preferred embodiment of this utility model, the two rear mounting columns are longer than the two front mounting columns, and a backrest is provided at the rear of the top of the seat cushion.

[0012] In a preferred embodiment of this utility model, mounting sleeves are provided on both sides of the rear top of the cushion, and the mounting sleeves are fixedly installed on the top of the two rear mounting columns.

[0013] In a preferred embodiment of this utility model, a connection port is provided at the front of the handrail, and the connection port is detached from the top of the front mounting column.

[0014] In a preferred embodiment of the present invention, a rotating opening is provided at the rear of the handrail, and a rotating frame is provided at the front of the rotating component, wherein the rotating opening and the rotating frame are rotatably connected.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0016] Beneficial effects: By setting two sets of intersecting connecting rods between every two adjacent support columns, and using hinged rods to achieve a rotating connection at the middle of the connecting rods, combined with the rotating connection between the first connecting bolt at the bottom of the support column and the bottom of the connecting rod, and the rotating connection between the second connecting bolt inside the sliding sleeve and the top of the connecting rod, pushing the support column inward during folding will cause the connecting rod to retract around the hinged rod, while simultaneously pulling the sliding sleeve upward along the mounting column, making the support column, connecting rod, and seat tightly closed, significantly reducing the overall extension length; In addition, the armrest can be rotated backward to be parallel to the rear mounting column through the cooperation of the rotating component and the rotating frame, and can fit into the main frame without additional disassembly, avoiding the volume waste caused by component gaps. The final folded structure is more compact, significantly reducing storage space, making it easier to put into small areas such as backpacks and car trunks, improving portability. At the same time, when unfolding, simply pulling the support column and fixing the armrest can quickly form a stable support frame, taking into account both practicality and ease of operation.

[0017] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the main structure of a portable folding chair.

[0020] Figure 2 A schematic diagram of the frame structure in a portable folding chair;

[0021] Figure 3 A schematic diagram of the seat and backrest structure in a portable folding chair;

[0022] Figure 4 This is a schematic diagram of the top structure of the rear support column in a portable folding chair.

[0023] In the diagram: 1. Support column; 11. Connecting rod; 12. Hinge rod; 13. First connecting bolt; 2. Seat cushion; 21. Backrest cushion; 22. Mounting sleeve; 23. Sliding sleeve; 24. Second connecting bolt; 3. Mounting column; 31. Rotating component; 32. Armrest; 33. Connection port; 34. Rotating frame; 4. Rotating port. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] Please refer to Figures 1-4 This utility model discloses a portable folding chair, including four supporting columns 1, a seat cushion 2, and two armrests 32. The four supporting columns 1 are the supporting legs of the folding chair, used to support the overall structure. The seat cushion 2 is the core component for the user to sit on. It can be made of a fabric with a certain elasticity and breathability to improve the comfort of sitting. The armrests 32 are components that provide support for the user's hands, making it easier for the user to maintain a comfortable sitting posture and enhancing the stability of the folding chair during use. The top of the supporting columns 1 is provided with mounting columns 3, which are mounting structures used to install other structures. The two rear mounting columns 3 are longer than the two front mounting columns 3. The bottom of the seat cushion 2 is provided with sliding sleeves 23 around the perimeter. The sliding sleeves 23 are slidably connected to the mounting columns 3 and slide on the mounting columns 3 around the perimeter.

[0026] Between every two adjacent support columns 1, there are two intersecting connecting rods 11. There are four sets of connecting rods 11, located at the front, back, left, and right. A hinge rod 12 is located at the middle of each pair of connecting rods 11, and the hinge rod 12 is rotatably connected to the middle of the two connecting rods 11. A first connecting bolt 13 is located on the inner side of the bottom of the support column 1, and the first connecting bolt 13 is rotatably connected to the bottom of the connecting rod 11. A second connecting bolt 24 is located on the inner side of the sliding sleeve 23, and the second connecting bolt 24 is rotatably connected to the top of the connecting rod 11. In use, when the folding chair needs to be unfolded, the surrounding support columns 1 are pulled outwards. The support columns 1, through the first connecting bolts 13, drive the bottom of the connecting rods 11 to move outwards synchronously. Because the middle of the connecting rod 11 is connected by the hinge rod 1... 2. With the rotation connection, the connecting rod 11 will gradually unfold around the hinge rod 12 as the fulcrum. At the same time, the top of the connecting rod 11 pushes the sliding sleeve 23 to slide down along the mounting column 3 through the second connecting bolt 24 until the support column 1 and the connecting rod 11 form a stable support frame. At this time, the seat cushion 2 is also fully unfolded, and the user can sit normally. When it is necessary to fold and store, push the support columns 1 around the perimeter inward. The support columns 1 drive the bottom of the connecting rod 11 to move inward through the first connecting bolt 13. The connecting rod 11 rotates and retracts around the hinge rod 12. At the same time, the top of the connecting rod 11 pulls the sliding sleeve 23 to slide up along the mounting column 3 through the second connecting bolt 24 until the support column 1 and the connecting rod 11 retract to a compact state, completing the folding, greatly reducing the storage space and making it convenient to carry.

[0027] A backrest 21 is provided at the top rear of the seat cushion 2. Both the seat cushion 2 and the backrest 21 are made of flexible fabric, such as canvas, Oxford cloth, or breathable mesh. Canvas and Oxford cloth have high abrasion resistance and tensile strength, making them suitable for outdoor use. Breathable mesh has excellent breathability, which can effectively prevent stuffiness and sweating during summer use. The backrest 21 can be filled with flexible filling materials such as sponge, down cotton, or memory foam. Sponge is cost-effective and has stable elasticity, down cotton is lightweight and soft, and memory foam can conform to the curve of the human back for support, improving the comfort of use. Mounting sleeves 22 are provided on both sides of the top rear of the backrest 21. The mounting sleeves 22 are fixedly installed on the top of the two mounting posts 3 at the rear, thereby fixing the position of the top of the backrest 21.

[0028] A rotating component 31 is rotatably mounted on the rear mounting column 3. A connecting port 33 is provided in front of the armrest 32. The connecting port 33 is detachable from the top of the front mounting column 3. A rotating port 4 is provided behind the armrest 32. A rotating frame 34 is provided in front of the rotating component 31. The rotating port 4 and the rotating frame 34 are rotatably connected. When the folding chair is unfolded for use, the connecting port 33 in front of the armrest 32 is aligned with the top of the front mounting column 3 and inserted and fixed. When the folding chair needs to be folded, first lift the front of the armrest 32 upward to disengage the connecting port 33 from the top of the front mounting column 3. Rotate the armrest 32 outward through the rotating component 31. Then, using the rotating frame 34 as an axis, rotate the armrest 32 backward to a state parallel to the rear mounting column 3. This avoids the armrest 32 causing obstruction during folding and ensures that the folding chair can be smoothly retracted into a more compact state.

[0029] The working principle of this utility model is as follows: When the folding chair needs to be unfolded, the surrounding support columns 1 are pulled outwards. The support columns 1, through the first connecting bolt 13, drive the bottom of the connecting rod 11 to move outwards synchronously. Since the middle part of the connecting rod 11 is rotatably connected by the hinge rod 12, the connecting rod 11 will gradually unfold with the hinge rod 12 as the fulcrum. At the same time, the top of the connecting rod 11 pushes the sliding sleeve 23 to slide down along the mounting column 3 through the second connecting bolt 24 until the support column 1 and the connecting rod 11 form a stable support frame. At this time, the seat cushion 2 is also fully unfolded, and the user can sit normally. When the chair needs to be folded and stored, the surrounding support columns 1 are pushed inwards. The support columns 1, through the first connecting bolt 13, drive the bottom of the connecting rod 11 to move inwards. The connecting rod 11 moves around the hinge rod 12. 2. Rotate to retract. At the same time, the top of the connecting rod 11 pulls the sliding sleeve 23 along the mounting column 3 upward through the second connecting bolt 24 until the support column 1 and the connecting rod 11 retract to a compact state, completing the folding. This greatly reduces the storage space and makes it easy to carry. When the folding chair is unfolded for use, align the connecting port 33 in front of the armrest 32 with the top of the front mounting column 3 and fit it in to fix it. When the folding chair needs to be folded, first lift the front of the armrest 32 upward to disengage the connecting port 33 from the top of the front mounting column 3. Rotate the armrest 32 outward through the rotating part 31, and then rotate the armrest 32 backward with the rotating frame 34 as the axis until it is parallel to the rear mounting column 3. This avoids the armrest 32 causing obstruction during the folding process and ensures that the folding chair can be smoothly retracted to a relatively compact state.

[0030] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A portable folding chair, characterized in that: It includes four supporting columns (1), a seat cushion (2), and armrests (32) on both sides. Two cross-connecting rods (11) are provided between every two adjacent supporting columns (1), and there are four sets of connecting rods (11). The support column (1) is provided with a mounting column (3) at the top, and the cushion (2) is provided with a sliding sleeve (23) around the bottom. The sliding sleeve (23) is slidably connected to the mounting column (3), and a rotating part (31) is rotatably provided on the mounting column (3) at the rear.

2. A portable folding chair according to claim 1, characterized in that, A hinge rod (12) is provided at the middle position of the two connecting rods (11), and the hinge rod (12) is rotatably connected to the middle position of the two connecting rods (11).

3. A portable folding chair according to claim 1, characterized in that, The support column (1) is provided with a first connecting bolt (13) on the inner side of its bottom, and the first connecting bolt (13) is rotatably connected to the bottom of the connecting rod (11).

4. A portable folding chair according to claim 1, characterized in that, The inner side of the sliding sleeve (23) is provided with a second connecting bolt (24), and the second connecting bolt (24) is rotatably connected to the top of the connecting rod (11).

5. A portable folding chair according to claim 1, characterized in that, The two rear mounting posts (3) are longer than the two front mounting posts (3), and a backrest (21) is provided at the top rear of the seat cushion (2).

6. A portable folding chair according to claim 5, characterized in that, The cushion (21) is provided with mounting sleeves (22) on both sides of the top rear, and the mounting sleeves (22) are fixedly installed on the top of the two rear mounting columns (3).

7. A portable folding chair according to claim 1, characterized in that, A connection port (33) is provided in front of the handrail (32), and the connection port (33) is installed and removed from the top of the front mounting column (3).

8. A portable folding chair according to claim 1, characterized in that, A rotating opening (4) is provided behind the handrail (32), and a rotating frame (34) is provided in front of the rotating component (31). The rotating opening (4) and the rotating frame (34) are rotatably connected.

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