Folding chair

Abstract

The utility model relates to the field of folding chairs, and provides a folding chair which comprises a seat frame, a back frame, a front foot frame, a rear foot frame, two armrest frames and two extension pieces, the lower end of the back frame is rotatably connected with the rear end of the seat frame, the front foot frame is rotatably connected to the side face of the seat frame, one end of each extension piece is rotatably connected with the rear foot frame, and the other end of each extension piece is rotatably connected with the armrest frame. One end of the extension piece is rotatably connected to the seat frame, the other end of the extension piece is rotatably connected to the seat frame, the upper end of the front foot frame and the upper end of the rear foot frame are rotatably connected to form a connecting part, the rear ends of the two armrest frames are rotatably connected to the back frame, at least two clamping grooves are formed in the armrest frames, and the connecting part can be clamped in one clamping groove so as to adjust the angle of the back frame. The folding chair extension part can serve as a supporting lever, change the inclination state of the chair and select different clamping grooves for clamping, so that the angle of the back frame is accurately adjusted, the comfort requirements in different use scenes are met, and the technical problems that the inclination of the folding chair is difficult to adjust and the comfort is poor are solved.

Description

Technical Field

[0001] This utility model relates to the field of folding chairs, and more particularly to a folding chair. Background Technology

[0002] Folding chairs, as a type of highly practical portable seating, play an important role in many fields due to their foldable nature. In everyday life, whether it's family gatherings, outdoor picnics, or temporarily adding seating indoors, folding chairs can quickly meet people's seating needs thanks to their ease of storage and portability. In public places such as libraries, train stations, and temporary event venues, folding chairs have become an important tool for handling large flows of people and temporary seating needs. In the field of emergency rescue, folding chairs can also provide necessary rest and support for disaster victims and rescue workers during disasters. However, most folding chairs on the market currently only present a fixed position when unfolded, and their backrest tilt cannot be adjusted according to actual usage needs. This single-state design exposes many obvious problems when facing diverse usage scenarios and different user needs.

[0003] When picnicking or camping outdoors, people often want to enjoy nature in a more relaxed manner. In this case, if a folding chair could be adjusted to a certain recline angle, users could lean back more comfortably, relax, and better immerse themselves in the outdoor leisure atmosphere. However, existing fixed-angle folding chairs cannot meet this need; users are forced to maintain a relatively upright sitting posture, which can easily lead to fatigue after prolonged use.

[0004] In offices, libraries, and other places where concentration is required for work or study, users typically need to maintain a relatively upright posture to ensure good visibility and body alignment. While fixed-angle folding chairs can meet this need to some extent, prolonged use may lead to neck and back pain and discomfort because users cannot fine-tune the angle to their own comfort level. For special groups such as the elderly, pregnant women, and people with disabilities, the chair's tilt angle has even more specific requirements. For example, the elderly may need a certain tilt to reduce body pressure and facilitate getting up and sitting down due to declining physical function; pregnant women in their late pregnancy also need a more comfortable sitting posture to alleviate physical strain as their abdomen grows. Existing fixed-angle folding chairs cannot be personalized for these special groups, making it difficult to meet their actual needs. Everyone's body structure, sitting habits, and comfort levels are different. Fixed-angle folding chairs cannot be adjusted according to individual user differences, causing many users to be unable to find the most suitable sitting posture, thus affecting comfort. Utility Model Content

[0005] Therefore, to address the aforementioned problems, this utility model proposes a folding chair. It solves the technical problem that folding chairs are difficult to adjust the backrest tilt and have poor comfort.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A folding chair includes a seat frame, a back frame, a front leg, a rear leg, two armrests, and two extension members. The lower end of the back frame is rotatably connected to the rear end of the seat frame. The front leg is rotatably connected to the side of the seat frame. One end of the extension member is rotatably connected to the rear leg, and the other end of the extension member is rotatably connected to the seat frame. The upper end of the front leg is rotatably connected to the upper end of the rear leg to form a connecting part. The rear ends of the two armrests are rotatably connected to the back frame. Each armrest has at least two locking slots. The connecting part can engage one of the locking slots to adjust the angle of the back frame. The seat frame has a seat portion, and the back frame has a backrest.

[0008] Further:

[0009] The bottom of the handrail is provided with a locking seat, and the locking slot is located on the locking seat.

[0010] The card holder is provided with a horizontal groove, the card slot is connected to the horizontal groove, and the card slot is located at the upper end of the horizontal groove.

[0011] The upper end of the locking slot is tilted forward.

[0012] The number of the card slots is three.

[0013] The extension includes two side plates, a first pivot connected to one end of the side plates, and a second pivot connected to the other end of the side plates. The first pivot passes through the rear leg, and the second pivot is connected to the seat frame.

[0014] The second pivot is equipped with a backrest, which can be supported and fixed against the back frame when the folding chair is unfolded.

[0015] The extension is equipped with a backrest, which can be supported and fixed against the back frame when the folding chair is unfolded.

[0016] The backrest is an elastic sheet.

[0017] The backrest and the seat are made of a single piece of support fabric.

[0018] By adopting the aforementioned technical solution, the beneficial effects of this utility model are:

[0019] This folding chair extension acts as a support lever, altering the seat's tilt. At least two locking slots on the armrests engage with the connecting parts formed by the front and rear legs, allowing users to select different slots to precisely adjust the backrest angle and meet comfort needs in various scenarios. This folding chair flexibly adapts to different usage scenarios and user needs, providing comfortable and stable seating support whether at home, in the office, or on outdoor travel. The specially designed backrest on the extension rests against the backrest when the chair is unfolded, providing additional support and enhancing overall stability, preventing structural instability or tipping risks due to excessive tilting. The backrest is made of elastic material, providing cushioning during support, reducing discomfort from hard contact, and adapting to changes in angle during folding, maintaining structural flexibility and durability. The locking slot design, especially its forward-tilted upper end, makes engaging and disengaging the connecting parts smoother, reducing operational difficulty and improving the user experience. The backrest and seat are made of one-piece molded support fabric, which not only simplifies the manufacturing process and reduces costs, but also makes the overall seat lighter, easier to carry and store. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of the folding chair of this utility model.

[0021] Figure 2 yes Figure 1 A structural diagram from another angle.

[0022] Figure 3 This is a structural diagram of a folding chair without the backrest and seat installed.

[0023] Figure 4 yes Figure 3 A structural diagram from another angle.

[0024] Figure 5 This is a schematic diagram of the structure of a folding chair after it has been folded.

[0025] Figure 6 yes Figure 5 A structural diagram from another angle.

[0026] Figure 7 This is a structural schematic diagram of the extension component.

[0027] Figure 8 This is a schematic diagram of the card holder structure.

[0028] Figure label:

[0029] 1. Seat frame; 2. Backrest frame; 3. Front stand; 4. Rear stand; 5. Handrail; 6. Extension; 61. Side panel; 62. First pivot; 63. Second pivot; 64. Backrest; 7. Locking seat; 71. Horizontal groove; 72. Locking groove; 81. Seat; 82. Backrest; 9. Third pivot. Detailed Implementation

[0030] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0031] refer to Figures 1 to 8 This embodiment provides a folding chair, including a seat frame 1, a back frame 2, a front leg 3, a rear leg 4, two armrests 5, and two extension members 6. The lower end of the back frame 2 is rotatably connected to the rear end of the seat frame 1. The front leg 3 is rotatably connected to the side of the seat frame 1. One end of the extension member 6 is rotatably connected to the rear leg 4, and the other end of the extension member 6 is rotatably connected to the seat frame 1. The upper end of the front leg 3 is rotatably connected to the upper end of the rear leg 4 to form a connecting part. The rear ends of the two armrests 5 are rotatably connected to the back frame 2, and the armrests 5 are provided with at least two locking slots 72. The connecting part can lock into one of the locking slots 72 to adjust the angle of the back frame 2. The seat frame 1 is provided with a seat part 81, and the back frame 2 is provided with a backrest 82.

[0032] In one embodiment, the bottom of the handrail 5 is provided with a locking seat 7, and the locking groove 72 is located on the locking seat 7.

[0033] In one embodiment, the card holder 7 is provided with a horizontal groove 71, and a card slot 72 is connected to the horizontal groove 71 and located at the upper end of the horizontal groove 71.

[0034] In one embodiment, the upper end of the locking slot 72 is tilted forward.

[0035] The aforementioned slot 72 can also be configured as vertical, arc-shaped, or other structures, depending on the specific circumstances.

[0036] In one embodiment, the number of slots 72 is three.

[0037] The number of the aforementioned card slots 72 can also be two, four, five or even more, depending on the specific situation.

[0038] In one embodiment, the extension member 6 includes two side plates 61, a first pivot 62 connected to one end of the side plates 61, and a second pivot 63 connected to the other end of the side plates 61. The first pivot 62 passes through the rear foot 4, and the second pivot 63 is connected to the seat frame 1.

[0039] In one embodiment, a backrest 64 is provided on the second pivot 63. When the folding chair is unfolded, the backrest 64 can abut against the back frame 2 for support and fixation.

[0040] In one embodiment, the backing plate 64 is an elastic sheet.

[0041] The aforementioned backing plate 64 can also be made of rigid board or other materials, depending on the specific circumstances.

[0042] In one embodiment, the backrest 82 and the seat 81 are integrally formed support fabric.

[0043] The backrest 82 and seat 81 mentioned above can also be made of plastic, stainless steel or other rigid plate materials, depending on the specific situation.

[0044] In one embodiment, the upper end of the front leg 3 and the upper end of the rear leg 4 are connected by a third pivot 9, which can be locked in the locking groove 72.

[0045] In one embodiment, the connecting part can also be provided on the front leg 3 or the rear leg 4. The connecting part can be engaged with the engaging groove 72, which is a known structure and will not be described in detail here.

[0046] The working principle of this utility model is as follows:

[0047] When the folding chair is unfolded, the user can select different slots 72 to lock it in as needed. The backrest 64 of the extension piece 6 rests against the back frame 2, providing additional support for the seat. The angle of the back frame 2 can be adjusted to flexibly adapt to different usage scenarios and user needs. Whether at home, in the office, or on outdoor travel, it can provide comfortable and stable sitting support. When not in use, the folding chair can be folded and stored for easy carrying and placement. It is simple and practical.

[0048] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A folding chair, characterized by: The folding chair comprises a seat frame, a back frame, a front leg frame, a rear leg frame, two hand frames and two extension pieces, the lower end of the back frame is rotatably connected with the rear end of the seat frame, the front leg frame is rotatably connected with the side of the seat frame, one end of the extension piece is rotatably connected with the rear leg frame, the other end of the extension piece is rotatably connected with the seat frame, the upper end of the front leg frame is rotatably connected with the upper end of the rear leg frame to form a connecting part, the rear end of each of the two hand frames is rotatably connected with the back frame, at least two clamping grooves are arranged on the hand frame, the connecting part can be clamped in one of the clamping grooves to adjust the angle of the back frame, a seat part is arranged on the seat frame, and a back part is arranged on the back frame.

2. A folding chair according to claim 1, characterized in that: The bottom of the hand frame is provided with a clamping seat, and the clamping groove is arranged on the clamping seat.

3. A folding chair according to claim 2, wherein: A horizontal groove is arranged on the clamping seat, and the clamping groove is communicated with the horizontal groove.

4. A folding chair according to claim 3, wherein: The upper end of the clamping groove is forwardly inclined.

5. The folding chair of claim 1, wherein: The number of the clamping grooves is three.

6. The folding chair of claim 1, wherein: The extension piece comprises two side plates, a first rotating shaft connected with one end of the side plate and a second rotating shaft connected with the other end of the side plate, the first rotating shaft penetrates through the rear leg frame, and the second rotating shaft is connected with the seat frame.

7. A folding chair according to claim 6, wherein: A back plate is arranged on the second rotating shaft, and the back plate can be supported and fixed against the back frame when the folding chair is unfolded.

8. The folding chair of claim 1, wherein: A back plate is arranged on the extension piece, and the back plate can be supported and fixed against the back frame when the folding chair is unfolded.

9. A folding chair according to claim 7 or 8, characterised in that: The back plate is an elastic sheet.

10. The folding chair of claim 1, wherein: The back part and the seat part are an integral support fabric.

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