Portable folding chair

Abstract

The utility model relates to the field, in particular to a portable folding chair which comprises a supporting frame and a connecting rod, a connecting rod is fixedly connected between the lower ends of the two supporting frames, the seat cushion is arranged between the two supporting frames, the back cushion is connected between the upper ends of the two supporting frames, and a folding mechanism capable of being folded and compressed is arranged between the two supporting frames. A clamping mechanism is arranged on the supporting frame, the supporting frame and the supporting frame are installed together through a clamping assembly, the folding chair is compressed and folded through the folding mechanism to reduce the occupied space, and the folding mechanism is extremely convenient to stretch and fold and has structural strength. The clamping seat reduces the pressure borne by the second rotating shaft by increasing the stress area, the second rotating shaft is prevented from being broken in the using process, the seat cushion and the back cushion can be rapidly mounted and dismounted through the clamping mechanism, and the seat cushion and the back cushion are not prone to sliding off in the using process.

Description

Technical Field

[0001] The utility model relates to the technical field of folding chairs, in particular to a lightweight folding chair. Background Art

[0002] A folding chair is a chair that can be folded and unfolded. It is commonly used in our daily life because of its simple structure and small space occupied.

[0003] Existing folding chairs are often prone to structural component breakage during use, even posing a threat to our personal safety. There is a lack of reinforcement or protection mechanisms on the folding structure, and the use is entirely determined by the strength of the connection between the seat cushion and the seat. The strength of this structure often cannot meet the needs, and long-term use will cause breakage due to wear and tear.

[0004] In order to solve the problem of component breakage caused by insufficient structural strength, a folding chair with a high-strength folding structure is designed to ensure that the components will not break during the unfolding and folding process to overcome the problem of insufficient structural strength. Utility Model Content

[0005] In order to overcome the problem of component breakage caused by insufficient structural strength.

[0006] The technical solution of the utility model is: a lightweight folding chair, comprising a supporting frame and a connecting rod; further comprising a seat cushion and a back cushion, a connecting rod being fixedly connected between the lower ends of the two supporting frames, a seat cushion being provided between the two supporting frames, a back cushion being connected between the upper ends of the two supporting frames, a foldable and compressible folding mechanism being provided between the two supporting frames, a snapping mechanism being provided on the supporting frames and being installed together with the supporting frames through a snapping assembly.

[0007] Preferably, the seat cushion and the back cushion are installed before use, and the folding mechanism reduces the occupied space by compressing and folding the folding chair. The folding mechanism is not only extremely convenient to stretch and fold, but also has structural strength. The locking mechanism can quickly install and remove the seat cushion and the back cushion, making it easy to replace and clean the seat cushion and the back cushion.

[0008] The folding mechanism comprises a connecting arm 1, a rotating shaft 1, a sliding groove 2, a slider 2, a connecting arm 2, a rotating shaft 2 and a card seat, wherein a card slot is provided on the connecting rod, and the connecting arm 1 is rotatably connected to the card slot of the connecting rod, the two connecting arms are rotatably connected to the rotating shaft 1, and the two ends of the rotating shaft 1 pass through the side of the two connecting arms 1, and the supporting frame is fixedly installed with a slide groove 2, and the end of the slide groove 2 is slidably provided with a slider 2, and the end of the slider 2 is rotatably connected to the connecting arm 2, and the connecting arm 2 is rotatably connected to the rotating shaft 2, and one end of the rotating shaft 2 is rotatably connected to the connecting arm 1, and the card seat is fixedly connected to the rotating shaft 2. When the folding chair needs to be unfolded, the two supporting frames are pulled outward, and the rotating shaft 2 simultaneously drives the connecting arm 2 to rotate and open, and the slider 2 connected to the end of the connecting arm 2 is rotatably moved downward in the slide groove 2. When the slider 2 moves to the bottom end of the slide groove 2, the folding chair is unfolded. When folding, the two supporting frames are pulled inward, and the connecting arm 1 rotates on the rotating shaft 1 to complete folding.

[0009] Preferably, the side of the holder fits with the side of the connecting arm 1, and the holder supports the connecting arm together. The holder reduces the pressure on the rotating shaft 2 by increasing the force-bearing area with the connecting arm 1, preventing the rotating shaft 2 from breaking during use.

[0010] Preferably, the end of slider 2 is a sphere for reducing the friction area when slider 2 slides in slide groove 2. The end of slider 2 is a sphere, which facilitates the movement and rotation in slide groove 2, thereby increasing the smoothness of the folding chair when unfolding and folding.

[0011] Preferably, the locking mechanism includes a connecting seat, a slide groove 1, a slider 1, a block 1, a slide groove 3, a slider 3, and a block 2. The end of the connecting arm 1 is fixedly connected to the connecting seat, the slide groove 1 is fixedly installed on the connecting seat, the slide groove 1 is slidably provided with a slider, the end of the connecting seat is provided with an opening, and the end opening of the connecting seat is connected with a block 1. The upper end of the support frame is fixedly connected with a slide groove 3, the slide groove 3 is slidably connected with the slider 3, the upper end of the support frame is provided with an opening, and the upper end opening of the support frame is connected with the block 2. Before use, first insert the slider 1 on the seat cushion into the slide groove 1 on both sides of the connecting seat, then install the block 1 at the end of the connecting seat, insert the slider 3 on the back cushion into the slide groove 3, and then install the block 2 in the upper end opening of the support frame.

[0012] Preferably, the two ends of the seat cushion are respectively fixedly connected to the side surfaces of the two sliders, and a rubber ring is fixedly connected to the clamping block. When the seat cushion needs to be removed, the clamping block is removed, and then the slider is removed from the slide groove, which facilitates the disassembly and assembly of the seat cushion. The rubber ring enhances the tightness of the connection between the clamping block and the opening of the connecting seat to prevent the seat cushion from slipping during use.

[0013] Preferably, the two ends of the cushion are respectively fixedly connected to the sides of the two sliders three, and a rubber ring is fixedly connected to the block two. When the cushion needs to be removed, the block two is removed, and then the slider three is taken out from the slide groove three, which facilitates the disassembly and assembly of the cushion. The rubber ring enhances the tightness of the connection between the block two and the opening of the support frame to prevent the cushion from slipping during use.

[0014] The beneficial effects of the utility model are:

[0015] 1. The folding mechanism reduces the space occupied by the folding chair by compressing and folding it. The folding mechanism is not only extremely convenient to stretch and fold, but also has structural strength, and the structural components are not easy to break during use.

[0016] 2. The snap-fit ​​mechanism allows for quick installation and removal of the seat cushion and back cushion, making it easy to replace and clean the seat cushion and back cushion, and the seat cushion and back cushion are not likely to slip during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the lightweight folding chair and the connecting rod of the utility model;

[0018] Figure 2 Shown is a schematic diagram of the three-dimensional structure of the lightweight folding chair and seat cushion of the present invention;

[0019] Figure 3 Shown is a schematic diagram of the three-dimensional structure of the lightweight folding chair and booth of the present invention;

[0020] Figure 4 Shown is a schematic diagram of the three-dimensional structure of the lightweight folding chair and the connecting seat of the present invention;

[0021] Figure 5 The display is a lightweight folding chair of the utility model Figure 1 A is an enlarged schematic diagram of the three-dimensional structure;

[0022] Figure 6 The display is a lightweight folding chair of the utility model Figure 2 Schematic diagram of the enlarged three-dimensional structure at point B.

[0023] Explanation of the accompanying reference numerals: 1. Support frame; 2. Connecting rod; 3. Connecting arm 1; 4. Rotating shaft 1; 5. Connecting seat; 6. Slide groove 1; 7. Slider 1; 8. Cushion; 9. Block 1; 10. Slide groove 2; 11. Slider 2; 12. Connecting arm 2; 13. Rotating shaft 2; 14. Block; 15. Slide groove 3; 16. Slider 3; 17. Cushion; 18. Block 2. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] See also Figures 1-6 The utility model provides an embodiment: a lightweight folding chair, comprising a supporting frame 1 and a connecting rod 2; further comprising a seat cushion 8 and a back cushion 17, a connecting rod 2 fixedly connected between the lower ends of the two supporting frames 1, a seat cushion 8 is provided between the two supporting frames 1, and a back cushion 17 is connected between the upper ends of the two supporting frames 1, and a foldable and compressible folding mechanism is provided between the two supporting frames 1, a snap mechanism is provided on the supporting frame 1 and is installed together with the supporting frame through a snap assembly. Before use, the seat cushion 8 and the back cushion 17 are installed, and the folding mechanism reduces the occupied space by compressing and folding the folding chair. The folding mechanism is not only extremely convenient to extend and fold, but also has structural strength. The snap mechanism can quickly install and disassemble the seat cushion 8 and the back cushion 17, making it convenient to replace and clean the seat cushion 8 and the back cushion 17.

[0026] See also Figure 1 、 Figure 3 and Figure 4 In this embodiment, the folding mechanism includes a connecting arm 13, a rotating shaft 14, a sliding groove 210, a slider 211, a connecting arm 212, a rotating shaft 213 and a card seat 14. A card slot is provided on the connecting rod 2, and the connecting arm 13 is rotatably connected to the card slot of the connecting rod 2. The two connecting arms 3 are rotatably connected to the rotating shaft 14, and the two ends of the rotating shaft 14 pass through the side surfaces of the two connecting arms 13. A sliding groove 210 is fixedly installed on the supporting frame 1. A slider 211 is slidably provided in the sliding groove 210. The end of the slider 211 is rotatably connected to the connecting arm 212. The connecting arm 212 is rotatably connected to the rotating shaft 213, and one end of the rotating shaft 213 is rotatably connected to the connecting arm 13. The card seat 14 is fixedly connected to the rotating shaft 213. The side surface of the card seat 14 is in contact with the side surface of the connecting arm 13. The card seat 14 supports the connecting arm 13. The end of the slider 11 is a sphere, which is used to reduce the friction area of ​​the slider 11 when it slides in the slide groove 10. When the folding chair needs to be unfolded, the two supporting frames 1 are pulled outward, and the rotating shaft 13 drives the connecting arm 12 to rotate and open at the same time. The slider 11 connected at the end of the connecting arm 12 rotates and moves downward in the slide groove 10. When the slider 11 moves to the bottom end of the slide groove 10, the folding chair is unfolded. When folding, the two supporting frames 1 are pulled inward, and the connecting arm 13 rotates and folds on the rotating shaft 4 to complete the folding. The seat 14 reduces the pressure on the rotating shaft 13 by increasing the force-bearing area with the connecting arm 13, preventing the rotating shaft 13 from breaking during use. The end of the slider 11 is a sphere, which facilitates the movement and rotation of the slide groove 10, thereby increasing the smoothness of the folding chair when unfolding and folding.

[0027] See also Figure 1 、 Figure 2 、 Figure 5 and Figure 6In this embodiment, the locking mechanism includes a connecting seat 5, a slide groove 16, a slider 17, a block 19, a slide groove 3 15, a slider 3 16, and a block 2 18. The end of the connecting arm 3 is fixedly connected to the connecting seat 5, and a slide groove 6 is fixedly installed on the connecting seat 5. A slider 7 is slidably provided on the slide groove 6. The end of the connecting seat 5 is provided with an opening, and the end opening of the connecting seat 5 is connected with a block 19. The upper end of the support frame 1 is fixedly connected with a slide groove 3 15, and a slider 3 16 is slidably connected on the slide groove 3 15. The upper end of the support frame 1 is provided with an opening, and the upper end opening of the support frame 1 is connected with a block 2 18. The two ends of the seat cushion 8 are respectively fixedly connected to the sides of the two sliders 17. A rubber ring is fixedly connected to the block 19. The two ends of the cushion 17 are respectively fixedly connected to the sides of the two sliders 3 16. The block The second and third blocks 18 are fixedly connected to each other with rubber rings. Before use, first insert the slider 17 on the seat cushion 8 into the slide grooves 16 on both sides of the connecting seat 5, then install the block 19 at the end of the connecting seat 5, insert the slider 3 16 on the back cushion 17 into the slide groove 3 15, and then install the block 2 18 on the upper end opening of the support frame 1. When the seat cushion 8 needs to be removed, remove the block 19 and then remove the slider 17 from the slide groove 16, which facilitates the disassembly and assembly of the seat cushion 8. The rubber ring enhances the tightness of the connection between the block 2 18 and the opening of the connecting seat 5 to prevent the seat cushion 8 from slipping during use. When the back cushion 17 needs to be removed, remove the block 2 18 and then remove the slider 3 16 from the slide groove 3 15, which facilitates the disassembly and assembly of the back cushion 17. The rubber ring enhances the tightness of the connection between the block 2 18 and the opening of the support frame 1 to prevent the back cushion 17 from slipping during use.

[0028] When in use, first insert the slider 17 on the seat cushion 8 into the slide groove 16 on both sides of the connecting seat 5, then install the block 19 at the end of the connecting seat 5, insert the slider 3 16 on the back cushion 17 into the slide groove 3 15, and then install the block 2 18 on the upper end opening of the support frame 1, so that the installation of the seat cushion 8 and the back cushion 17 is completed. When the folding chair needs to be unfolded, the two support frames 1 are pulled outward, and the connecting arm 1 3 rotates on the connecting rod 2 to unfold to both sides. During the rotation and opening process of the connecting arm 1 3, the connecting arm 2 12 is simultaneously driven to rotate and open through the rotating shaft 2 13. The slider 2 11 connected to the end of the connecting arm 2 12 rotates and moves downward in the slide groove 2 10. When the slider 2 11 moves to the bottom end of the slide groove 2 10, the folding chair is unfolded. The connecting seat 5 strengthens the structural strength of the rotating shaft 2 13 to prevent the rotating shaft 2 13 from breaking when the folding chair is under force. When folding, the two support frames 1 are pulled inward, and the connecting arm 1 3 rotates and folds on the rotating shaft 1 4 to complete folding.

[0029] Through the above steps, the folding mechanism reduces the space occupied by compressing and folding the folding chair. The folding mechanism is not only extremely convenient to stretch and fold, but also has structural strength. The structural components are not easy to break during use. The locking mechanism can quickly install and disassemble the seat cushion 8 and the back cushion 17, making it convenient to replace and clean the seat cushion 8 and the back cushion 17, and the seat cushion 8 and the back cushion 17 are not easy to slip during use.

Claims

1. A lightweight folding chair comprising a support frame (1) and a connecting rod (2); characterized in that: The seat cushion (8) and the back cushion (17) are also included. A connecting rod (2) is fixedly connected between the lower ends of the two support frames (1). A seat cushion (8) is provided between the two support frames (1). A back cushion (17) is connected between the upper ends of the two support frames (1). A foldable and compressible folding mechanism is provided between the two support frames (1). A snap-fit ​​mechanism is provided on the support frame (1) and is installed with the support frame through a snap-fit ​​assembly.

2. The portable folding chair according to claim 1, characterized in that: The folding mechanism comprises a connecting arm (3), a rotating shaft (4), a sliding groove (10), a slider (11), a connecting arm (12), a rotating shaft (13) and a card seat (14). A card slot is provided on the connecting rod (2), and the connecting arm (3) is rotatably connected to the card slot of the connecting rod (2). The two connecting arms (3) are rotatably connected to the rotating shaft (4), and the two ends of the rotating shaft (4) pass through the side surfaces of the two connecting arms (3). The supporting frame (1) is fixedly provided with a sliding groove (10), and a slider (11) is slidably provided in the sliding groove (10). The end of the slider (11) is rotatably connected to the connecting arm (12). The connecting arm (12) is rotatably connected to the rotating shaft (13), and one end of the rotating shaft (13) is rotatably connected to the connecting arm (3). The rotating shaft (13) is fixedly connected to the card seat (14).

3. The portable folding chair according to claim 2, characterized in that: The side surface of the card seat (14) is in contact with the side surface of the connecting arm (3), and the card seat (14) supports the connecting arm (3).

4. The portable folding chair according to claim 3, characterized in that: The end of the second slider (11) is a sphere for reducing the friction area when the second slider (11) slides in the second slide groove (10).

5. The portable folding chair according to claim 4, characterized in that: The locking mechanism comprises a connecting seat (5), a slide groove (6), a slider (7), a clamping block (9), a slide groove (15), a slider (16), and a clamping block (18). The end of the connecting arm (3) is fixedly connected to the connecting seat (5), a slide groove (6) is fixedly installed on the connecting seat (5), a slider (7) is slidably arranged on the slide groove (6), the slider (7), an end of the connecting seat (5) is provided with an opening, and the opening of the end of the connecting seat (5) is connected to the clamping block (9), the upper end of the supporting frame (1) is fixedly connected to the slide groove (15), the slide groove (15) is slidably connected to the slider (16), the upper end of the supporting frame (1) is provided with an opening, and the opening of the upper end of the supporting frame (1) is connected to the clamping block (18).

6. The portable folding chair according to claim 5, characterized in that: The two ends of the seat cushion (8) are respectively fixedly connected to the side surfaces of the two sliders (7), and a rubber ring is fixedly connected to the clamping block (9).

7. The portable folding chair according to claim 6, characterized in that: The two ends of the cushion (17) are respectively fixedly connected to the side surfaces of the two sliders (16), and a rubber ring is fixedly connected to the clamping block (18).

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