Turnover folding chair

By designing rotatable front legs, back legs, back frame, and seat frame, combined with specific angles and raised groove structures, the problem of large packaging volume of existing folding chairs has been solved, achieving efficient storage of the chair in both unfolded and folded states.

CN223585514UActive Publication Date: 2025-11-25ZHEJIANG YOTRIO GRP CO LTD
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Patent Information

Application Number
CN202423308654.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2025-11-25
Estimated Expiration
2034-12-31

AI Technical Summary

Technical Problem

The backrest of existing folding chairs cannot be adjusted and the angle cannot be controlled independently, resulting in a large volume of cardboard boxes required for packaging.

Method used

Design a flip-up folding chair where the front legs, back legs, back frame, and seat frame can all rotate within a set angle. By combining specific angles, the chair achieves triangular support and flat storage in both unfolded and folded states. The rotation angle is limited by the interlocking of protrusions and grooves.

Benefits of technology

This technology enables folding chairs to reduce packing size and increase packing volume when folded.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the field of outdoor leisure articles, and discloses a turnover folding chair which comprises a front leg, a rear leg, a back frame and a seat frame which are connected in a matched manner, and any one of the front leg, the rear leg, the back frame and the seat frame can rotate relative to the other three; when the turnover folding chair is in a folded storage state, the front leg and the rear leg form a minimum angle, the rear leg and the back frame form a minimum angle, the back frame and the seat frame form a minimum angle, and the seat frame and the front leg form a minimum angle, so that the turnover folding chair is in a flat state; when the turnover folding chair is in an unfolded use state, the front leg and the rear leg form a maximum angle, the rear leg and the back frame form a maximum angle, the back frame and the seat frame form a maximum angle, and the seat frame and the front leg form a maximum angle. The front leg, the rear leg, the back frame and the seat frame can rotate independently, so that the folding chair can be folded to a flat state, the packing size can be reduced, and the packing quantity can be increased.
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Description

TECHNICAL FIELD

[0001] The utility model relates to outdoor leisure goods field, concretely is a turnover folding chair. BACKGROUND

[0002] The folding chair generally includes the front leg, rear leg, seat frame and back frame, and the front leg and back frame are fixedly connected, and the rear leg and seat frame are folded and turned over in total three parts, and the main defects of the folding chair are that the back frame cannot be adjusted and controlled individually, and the paper box required for packaging is large. SUMMARY

[0003] The utility model discloses a turnover folding chair to solve the problem in the above background technology.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A turnover folding chair, including cooperation and connection's front leg, rear leg, back frame and seat frame, the front leg, rear leg, back frame and seat frame any one can rotate in the set angle relative to the other three;

[0006] When the turnover folding chair is in the folding storage state, the included angle between the front leg and the rear leg is the minimum angle, the included angle between the rear leg and the back frame is the minimum angle, and the included angle between the back frame and the seat frame is the minimum angle, so that the turnover folding chair is in the flat state.

[0007] When the turnover folding chair is in the unfolded use state, the included angle between the front leg and the rear leg is the maximum angle, and the front leg, the rear leg and the supporting surface form a triangular support; the included angle between the rear leg and the back frame is the maximum angle, and the included angle between the back frame and the seat frame is the maximum angle.

[0008] Further, the included angle between the front leg and the rear leg is 0-10 degrees, preferably 0 degrees, and the included angle between the two is 60-80 degrees, preferably 70 degrees.

[0009] Further, the included angle between the rear leg and the back frame is 0-10 degrees, preferably 0 degrees, and the included angle between the two is 123-143 degrees, preferably 133 degrees.

[0010] Further, the included angle between the back frame and the seat frame is 0-10 degrees, preferably 0 degrees, and the included angle between the two is 94-114 degrees, preferably 104 degrees.

[0011] Further, the back frame and the seat frame are rotationally connected, the seat frame and the rear leg are rotationally connected, and the rear leg and the front leg are rotationally connected.

[0012] Further, one end of the back frame is provided with back frame connecting ears on both sides, and one end of the seat frame is provided with seat frame connecting ears on both sides, and the back frame connecting ears are rotationally connected with the seat frame connecting ears on the same side.

[0013] Further, one end of the back frame is provided with back frame connecting ears on both sides, and one end of the seat frame is provided with seat frame connecting ears on both sides, and the back frame connecting ears are rotationally connected with the seat frame connecting ears on the same side.

[0014] Further, one end of the back frame is provided with back frame connecting ears on both sides, and one end of the seat frame is provided with seat frame connecting ears on both sides, and the back frame connecting ears are rotationally connected with the seat frame connecting ears on the same side.

[0015] Further, the outer side of the back frame connecting ear is provided with a back frame protrusion in an arc shape, the inner side of the seat frame connecting ear is provided with a seat frame groove in an arc shape, the seat frame groove is rotationally embedded with the back frame protrusion, the arc length of the seat frame groove is greater than that of the back frame protrusion, and the cooperation of the two achieves the rotation angle limitation of the back frame and the seat frame; the outer side of the seat frame connecting ear is provided with a seat frame protrusion in an arc shape, the inner side of the back frame connecting ear is provided with a back frame groove in an arc shape, the back frame groove is rotationally embedded with the seat frame protrusion, the arc length of the back frame groove is greater than that of the seat frame protrusion, and the cooperation of the two achieves the rotation angle limitation of the seat frame and the back frame; the outer side of the back frame connecting ear is provided with a back frame protrusion in an arc shape, the inner side of the front leg connecting ear is provided with a front leg groove in an arc shape, the front leg groove is rotationally embedded with the back frame protrusion, the arc length of the front leg groove is greater than that of the back frame protrusion, and the cooperation of the two achieves the rotation angle limitation of the back frame and the front leg.

[0016] Compared with the prior art, the front leg, the back leg, the back frame and the seat frame of the utility model can rotate independently, so that the folding chair can be folded to a flat state, the packing size can be reduced, and the packing amount can be increased. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 4 is a structural schematic view of the utility model in the unfolded use state.

[0018] Figure 2 Fig. 4 is a structural schematic view of the utility model in the unfolded use state.

[0019] Figure 3 Fig. 4 is a structural schematic view of the utility model in the unfolded use state.

[0020] Figure 4 Fig. 4 is a structural schematic view of the utility model in the unfolded use state.

[0021] Figure 5The utility model discloses a back frame connecting lug, a seat frame connecting lug, a front leg connecting lug and a rear leg connecting lug connecting structure schematic view two.

[0022] Figure 6 The utility model discloses a left view structure schematic view of another embodiment of the utility model under the unfolded use state.

[0023] In the drawing: back frame 1, back frame connecting lug 100, seat frame 2, seat frame connecting lug 200, front leg 3, front leg connecting lug 300, rear leg 4, rear leg connecting lug 400, connecting rod 5, support rod 6. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the utility model.

[0025] Please refer to Figures 1-5 A turnover folding chair, comprising a front leg 3, a rear leg 4, a back frame 1 and a seat frame 2 connected in cooperation, any one of the front leg 3, the rear leg 4, the back frame 1 and the seat frame 2 can rotate within a set angle relative to the other three.

[0026] When the turnover folding chair is in the folded storage state, the included angle between the front leg 3 and the rear leg 4 is the minimum angle, the included angle between the rear leg 4 and the back frame 1 is the minimum angle, and the included angle between the back frame 1 and the seat frame 2 is the minimum angle, so that the turnover folding chair is in a flat state.

[0027] When the turnover folding chair is in the unfolded use state, taking the clockwise direction of Figure 2 as the reference, the included angle between the front leg 3 and the rear leg 4 is the maximum angle, and the front leg 3, the rear leg 4 and the supporting surface form a triangular support. The included angle between the rear leg 4 and the back frame 1 is the maximum angle, and the included angle between the back frame 1 and the seat frame 2 is the maximum angle.

[0028] Please refer to Figure 2 and Figure 3 , taking the clockwise direction of Figure 2The angle between the front leg 3 and the rear leg 4 is the smallest at 0-10 degrees, preferably 0 degrees, and the largest at 60-80 degrees, preferably 70 degrees. The angle between the back frame 1 and the rear leg 4 is the smallest at 0-10 degrees, preferably 0 degrees, and the largest at 123-143 degrees, preferably 133 degrees. The angle between the back frame 1 and the seat frame 2 is the smallest at 0-10 degrees, preferably 0 degrees, and the largest at 94-114 degrees, preferably 104 degrees. The angle between the seat frame 2 and the front leg 3 is the smallest at 0-10 degrees, preferably 0 degrees.

[0029] Referring to the drawings again, Figures 1-5 The back frame 1 is rotatably connected to the seat frame 2, the seat frame 2 is rotatably connected to the rear leg 4, and the rear leg 4 is rotatably connected to the front leg 3. The back frame 1 is provided with a back frame connecting lug 100 on each of the left and right sides of one end, and a connecting rod 5 is arranged between the two back frame connecting lugs 100. The seat frame 2 is provided with a seat frame connecting lug 200 on each of the left and right sides of one end, and the back frame connecting lug 100 is rotatably connected to the seat frame connecting lug 200 on the same side. The rear leg 4 is provided with a rear leg connecting lug 400 on each of the left and right sides of one end, and the seat frame connecting lug 200 is rotatably connected to the rear leg connecting lug 400 on the same side. The front leg 3 is provided with a front leg connecting lug 300 on each of the left and right sides of one end, and the rear leg connecting lug 400 is rotatably connected to the front leg connecting lug 300 on the same side.

[0030] Specifically, as shown in Figure 4 and Figure 5 , the back frame connecting lug 100 is located inside the seat frame connecting lug 200 on the same side, the seat frame connecting lug 200 is located inside the rear leg connecting lug 400 on the same side, and the rear leg connecting lug 400 is located inside the front leg connecting lug 300 on the same side. The outer side of the back frame connecting lug 100 is provided with a back frame protrusion 100a in the shape of a circular arc, the inner side of the seat frame connecting lug 200 is provided with a seat frame groove 200b in the shape of a circular arc, the seat frame groove 200b is rotatably embedded with the back frame protrusion 100a, the arc length of the seat frame groove 200b is greater than the arc length of the back frame protrusion 100a, and the cooperation of the two achieves the rotation angle limitation of the back frame 1 and the seat frame 2. The outer side of the seat frame connecting lug 200 is provided with a seat frame protrusion 200a in the shape of a circular arc, the inner side of the rear leg connecting lug 400 is provided with a rear leg groove 400b in the shape of a circular arc, the rear leg groove 400b is rotatably embedded with the seat frame protrusion 200a, the arc length of the rear leg groove 400b is greater than the arc length of the seat frame protrusion 200a, and the cooperation of the two achieves the rotation angle limitation of the seat frame 2 and the rear leg 4. The outer side of the rear leg connecting lug 400 is provided with a rear leg protrusion 400a in the shape of a circular arc, and the inner side of the front leg connecting lug 300 is provided with a front leg groove 300a in the shape of a circular arc. The front leg groove 300a is rotatably embedded with the rear leg protrusion 400a, the arc length of the front leg groove 300a is greater than the arc length of the rear leg protrusion 400a, and the cooperation of the two achieves the rotation angle limitation of the rear leg 4 and the front leg 3.

[0031] The fitting of the protrusions and the grooves makes the back frame 1, the seat frame 2, the front leg 3 and the rear leg 4 press-fitted together, thereby achieving integral installation.

[0032] The utility model discloses from Figure 2 The process of folding from the unfolded use state to the folded state is as follows: the seat frame 2 is rotated by 104 degrees towards the back frame 1, then the seat frame 2 and the back frame 1 are rotated by 133 degrees together towards the rear leg 4, and finally the seat frame 2, the back frame 1 and the rear leg 4 are rotated by 70 degrees together towards the front leg 3. Figure 3

[0033] As Figure 6 shown, in another embodiment of the utility model, when the utility model is in the unfolded use state, a support rod 6 is installed between the end of the seat frame 2 away from the seat frame connecting ear 200 and the end of the front leg 3 away from the front leg connecting ear 300, thereby supporting the seat frame 2 and improving the strength. The connection mode of the support rod 6 with the seat frame 2 and the front leg 3 can adopt conventional detachable connection modes such as hanging, insertion and clamping.

[0034] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.​

Claims

1. A foldable chair with a turnover, comprising front legs (3), rear legs (4), a backrest (1) and a seat (2) connected in cooperation, characterized in that, Any one of the front leg (3), the rear leg (4), the back frame (1) and the seat frame (2) can rotate within a set angle relative to the other three. When the turnover folding chair is in the folded storage state, the angle between the front leg (3) and the rear leg (4) is the smallest, the angle between the rear leg (4) and the back frame (1) is the smallest, and the angle between the back frame (1) and the seat frame (2) is the smallest, so that the turnover folding chair is in a flat state. When the turnover folding chair is in the unfolded use state, the angle between the front leg (3) and the rear leg (4) is the largest, the front leg (3) and the rear leg (4) form a triangular support with the support surface; the angle between the rear leg (4) and the back frame (1) is the largest, and the angle between the back frame (1) and the seat frame (2) is the largest.

2. The reversible folding chair of claim 1, wherein, The smallest angle between the front leg (3) and the rear leg (4) is 0-10 degrees, and the largest angle between the two is 60-80 degrees.

3. The reversible folding chair of claim 1, wherein, The smallest angle between the rear leg (4) and the back frame (1) is 0-10 degrees, and the largest angle between the two is 123-143 degrees.

4. The reversible folding chair of claim 1, wherein, The smallest angle between the back frame (1) and the seat frame (2) is 0-10 degrees, and the largest angle between the two is 94-114 degrees.

5. The reversible folding chair of claim 1, wherein, The back frame (1) and the seat frame (2) are rotationally connected, the seat frame (2) and the rear leg (4) are rotationally connected, and the rear leg (4) and the front leg (3) are rotationally connected.

6. A reversible folding chair as defined in claim 5, wherein, One end of the back frame (1) is provided with back frame connecting ears (100) on the left and right sides, one end of the seat frame (2) is provided with seat frame connecting ears (200) on the left and right sides, and the back frame connecting ears (100) and the seat frame connecting ears (200) on the same side are rotationally connected.

7. A tip-up folding chair according to claim 6, wherein One end of the rear leg (4) is provided with rear leg connecting ears (400) on the left and right sides, the back frame connecting ears (100) are located on the inner side of the seat frame connecting ears (200) on the same side, the seat frame connecting ears (200) are located on the inner side of the rear leg connecting ears (400) on the same side, and the seat frame connecting ears (200) and the rear leg connecting ears (400) on the same side are rotationally connected.

8. A tip-up folding chair according to claim 7, wherein One end of the front leg (3) is provided with front leg connecting ears (300) on the left and right sides, the rear leg connecting ears (400) are located on the inner side of the front leg connecting ears (300) on the same side, and the rear leg connecting ears (400) and the front leg connecting ears (300) on the same side are rotationally connected.

9. The reversible folding chair of claim 8, wherein, The outer side of the back frame connecting lug (100) is provided with a circular arc-shaped back frame protrusion (100a), the inner side of the seat frame connecting lug (200) is provided with a circular arc-shaped seat frame groove (200b), the seat frame groove (200b) and the back frame protrusion (100a) are rotationally embedded, the arc length of the seat frame groove (200b) is greater than that of the back frame protrusion (100a), and the cooperation of the two realizes the rotation angle limitation of the back frame (1) and the seat frame (2); the outer side of the seat frame connecting lug (200) is provided with a circular arc-shaped seat frame protrusion (200a), the inner side of the rear leg connecting lug (400) is provided with a circular arc-shaped rear leg groove (400b), the rear leg groove (400b) and the seat frame protrusion (200a) are rotationally embedded, the arc length of the rear leg groove (400b) is greater than that of the seat frame protrusion (200a), and the cooperation of the two realizes the rotation angle limitation of the seat frame (2) and the rear leg (4); the outer side of the rear leg connecting lug (400) is provided with a circular arc-shaped rear leg protrusion (400a), the inner side of the front leg connecting lug (300) is provided with a circular arc-shaped front leg groove (300a), the front leg groove (300a) and the rear leg protrusion (400a) are rotationally embedded, the arc length of the front leg groove (300a) is greater than that of the rear leg protrusion (400a), and the cooperation of the two realizes the rotation angle limitation of the rear leg (4) and the front leg (3).