A folding structure for a folding chair and a folding chair that is easy to operate

Abstract

The present invention discloses a folding structure for a folding chair and a folding chair that is easy to operate. The folding structure comprises a shell (1), a rotating member (2) is provided in the middle of the shell (1); a linkage member (3) is rotatably mounted on the rotating member (2), and a plurality of annular evenly distributed mounting frames (4) are rotatably mounted on the side wall of the linkage member (3); each mounting frame (4) is located on the outer surface of the shell (1); the folding chair comprises a seat (12) and the folding structure, a plurality of evenly distributed telescopic tubes (13) are provided on the bottom surface of the seat (12), and the seat (12) is rotatably mounted on the folding structure via the telescopic tubes (13). The present invention is not only easy to operate, but also has the advantages of being light in weight, easy to carry, high in stability, easy to store, easy to carry, and high in comfort.

Description

Technical Field

[0001] The invention relates to a folding structure, in particular to a folding structure for a folding chair which is easy to operate. Background Art

[0002] A folding chair is a chair with a foldable function, mainly used in temporary outdoor places. Traditional folding chairs are mostly composed of a backrest, seat cushion, front legs, and rear legs combined through a folding structure. The folding structure is mainly completed by the backrest, seat cushion, front legs, and rear legs being hinged. This connection method requires the backrest, seat cushion, front legs, and rear legs to be spread apart when unfolding the folding chair; and the seat cushion, backrest, front legs, and rear legs to be spread apart when folding the chair, which is not convenient to operate. Therefore, the folding structure of existing folding chairs has the problem of being inconvenient to operate. Summary of the Invention

[0003] The object of the present invention is to provide a folding structure for a folding chair and a folding chair that are easy to operate. The present invention has the advantage of being easy to operate.

[0004] The technical solution of the present invention is a conveniently operated folding chair structure comprising a housing, a rotating member disposed in the middle of the housing; a linkage member rotatably mounted on the rotating member; and a plurality of evenly distributed annular mounting frames rotatably mounted on the sidewalls of the linkage member; each mounting frame is located on the outer surface of the housing. When the linkage member moves up and down, the mounting frame moves up and down, thereby folding or unfolding the mounting frame by rotating the rotating member, eliminating the need for manual extension to different angles, thereby enhancing ease of operation.

[0005] In the aforementioned folding structure for a folding chair that is easy to operate, the rotating member is provided with an external thread on its surface, and the inner wall of the linkage member is provided with an internal thread; the rotating member and the linkage member are connected to each other via the external and internal threads. The provision of the external and internal threads ensures the stability of the linkage member and improves the stability of the entire folding structure during use.

[0006] In the aforementioned folding structure for a folding chair that is easy to operate, a limiter is provided at one end of the rotating member, and a rotating member is installed at the other end; the limiter is provided in the housing, and the rotating member is provided at the bottom end of the housing. The provision of the limiter and the positioning member can limit the two moving ends of the rotating member, thereby preventing the rotating member from detaching from the housing and improving the stability of the overall structure.

[0007] In the aforementioned folding structure for a folding chair that is easy to operate, a clamping groove is provided on the inner wall of the shell near the end of the rotating member, and a positioning member installed on the rotating member is provided in the clamping groove.

[0008] In the aforementioned folding structure for a folding chair that is easy to operate, a plurality of evenly distributed hooks are provided in a ring shape on the bottom surface of the shell near the end of the rotating member, and the hooks are provided just below the mounting frame.

[0009] In the aforementioned folding structure for a folding chair that is easy to operate, hooks are also provided on the bottom surface of the linkage member at positions corresponding to each mounting frame, and limiting grooves are provided on the bottom surface of the mounting frame at positions corresponding to the hooks.

[0010] In the aforementioned folding structure for a folding chair that is easy to operate, a protrusion is provided on the top surface of the linkage member at the position corresponding to each mounting frame, and the top surface of the protrusion is fixedly connected to the inner bottom surface of the mounting frame; a mounting member is provided at the position corresponding to each adjacent mounting frame on the outer shell, and symmetrically distributed mounting ears are provided on both side surfaces of the mounting member; the mounting ears are rotatably connected to the mounting frame.

[0011] A folding chair comprises a seat and the aforementioned folding structure. The seat bottom surface is provided with a plurality of evenly distributed telescopic tubes, through which the seat is pivotally mounted on the folding structure. The telescopic tubes automatically adjust the seat's inclination angle to accommodate various sitting postures, thus expanding its applicability.

[0012] In the aforementioned folding chair, a connector is installed on the end of the telescopic tube corresponding to the mounting frame, and the connector is rotatably mounted on the mounting frame; the connector is connected to a support leg, and the support leg is sleeved on the mounting frame.

[0013] In the aforementioned folding chair, a mounting ring is fixedly mounted on the outer edge of the seat, and a tightening strap is provided on the bottom surface of the mounting ring. A fixing member is provided on the bottom surface of the mounting ring at a position corresponding to each telescopic tube. The sides of the legs facing the telescopic tubes are provided with grooves for accommodating the telescopic tubes. The provision of the fixing members increases the contact area between the telescopic tubes and the mounting ring, thereby further enhancing the stability of the structure. The provision of the tightening strap prevents the folding chair from unfolding due to human collision or other reasons when in the stowed state, thereby facilitating storage.

[0014] Compared with the prior art, the present invention improves the existing folding structure for folding chairs. By arranging a rotating part and a connecting part on the outer shell, the linkage part can be driven to move up and down only by rotating the rotating part, and the up and down movement of the linkage part will drive the installation frame to move up and down, so that the installation frame can be folded or unfolded by rotating the rotating part, and there is no need for manual extension at different angles, which makes the operation more convenient; and by arranging both the rotating part and the linkage part inside the outer shell and the installation frame outside the outer shell, the outer shell itself can limit the up and down movement position of the linkage part, and there is no need to set an additional limiting device, thereby reducing the overall weight. In addition, the present invention also provides external threads and internal threads on the surfaces of the rotating member and the linkage member, so that the rotating member and the linkage member are connected by the external threads and the internal threads, which can facilitate the movement of the linkage member while increasing the friction between the rotating member and the linkage member when the rotating member is not rotating, thereby ensuring the stability of the linkage member and thus improving the stability of the overall folding structure during use; by providing limiting members, rotating members and positioning members at both ends of the rotating member, the rotating member can be used to facilitate the rotation of the rotating member, which is convenient for use; and the provision of limiting members and positioning members can limit the two moving ends of the rotating member to avoid the rotating member from detaching from the shell, thereby improving the stability of the overall structure; by providing hooks on the bottom surface of the shell and the bottom surface of the linkage member, the hooks can be used to limit and stabilize the moving position of the installation frame, further improving the stability; and the hooks on the shell can also be used for hanging in the folded state, which is convenient The invention relates to a folding chair having a plurality of fixing members, a plurality of fixing members, and a plurality of fixing members, wherein the fixing members are connected to the mounting frame, and the fixing members are connected to the mounting frame, so that the telescopic tube and the legs of the folding chair can be folded on the same side, which reduces the space occupied after folding and is convenient to carry. Moreover, the telescopic tube and the legs are rotatably mounted on the mounting frame, so that the support base of the entire chair seat is an integrated structure, which does not require additional assembly, thus changing the original assembled folding chair and facilitating use. The invention also provides a mounting ring tube, which can support the chair seat by the mounting ring tube, thereby preventing the middle of the chair seat from collapsing too much and improving the comfort of use. The tightening belt can be fixed on the outside of the folding chair when the entire folding chair is folded, thereby preventing the tightening belt from falling apart and further facilitating carrying. The invention also provides a plurality of fixing members, thereby increasing the contact area between the telescopic tube and the mounting ring tube, thereby further increasing the stability of the structure. Therefore, the invention is not only convenient to operate, but also has the advantages of light weight, easy to carry, high stability, easy to store, easy to carry and high comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the folding structure of the present invention;

[0016] Figure 2 It is the main view of the folded structure;

[0017] Figure 3 yes Figure 2 Cross-sectional view at AA in the middle;

[0018] Figure 4 It is a structural diagram of a folding chair;

[0019] Figure 5 yes Figure 4 A partial enlarged view of point A in the middle.

[0020] The markings in the accompanying drawings are: 1-housing, 2-rotating part, 3-linkage part, 4-mounting frame, 5-limiting part, 6-rotating part, 7-clamping groove, 8-positioning part, 9-hook, 10-mounting part, 11-mounting ear, 12-seat seat, 13-telescopic tube, 14-connecting part, 15-leg, 16-mounting ring tube, 17-tightening belt, 18-fixing part. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and examples, but they are not intended to limit the present invention.

[0022] Embodiment. A folding structure for a folding chair that is easy to operate, comprising: Figures 1 to 5 As shown, it includes a shell 1, a rotating part 2 is provided in the middle of the shell 1; a linkage part 3 is rotatably installed on the rotating part 2, and a plurality of annular evenly distributed installation frames 4 are rotatably provided on the side wall of the linkage part 3; each installation frame 4 is located on the outer surface of the shell 1.

[0023] An external thread is provided on the surface of the rotating member 2, and an internal thread is provided on the inner wall of the linkage member 3; the rotating member 2 and the linkage member 3 are connected to each other by the external thread and the internal thread; a limit member 5 is provided at one end of the rotating member 2, and a rotating member 6 is installed at the other end; the limit member 5 is arranged in the shell 1, and the rotating member 6 is arranged at the bottom end of the shell 1; a clamping groove 7 is provided on the inner wall of the shell 1 near the end of the rotating member 6, and a positioning member 8 installed on the rotating member 2 is provided in the clamping groove 7; a plurality of evenly distributed hanging Hook 9, the hook 9 is arranged just below the mounting frame 4; hooks 9 are also provided on the bottom surface of the linkage member 3 at the position corresponding to each mounting frame 4, and a limiting groove is provided on the bottom surface of the mounting frame 4 at the position corresponding to the hook 9; a protrusion is provided on the top surface of the linkage member 3 at the position corresponding to each mounting frame 4, and the top surface of the protrusion is fixedly connected to the inner bottom surface of the mounting frame 4; mounting members 10 are provided on the outer shell 1 at the position corresponding to no two adjacent mounting frames 4, and symmetrically distributed mounting ears 11 are provided on both side surfaces of the mounting member 10; the mounting ears 11 are rotatably connected to the mounting frame 4.

[0024] A folding chair comprises a seat 12 and the aforementioned folding structure. A plurality of evenly distributed telescopic tubes 13 are provided on the bottom surface of the seat 12. The seat 12 is rotatably mounted on the folding structure via the telescopic tubes 13.

[0025] A connecting piece 14 is installed on the end of the telescopic tube 13 corresponding to the mounting frame 4, and the connecting piece 14 is rotatably mounted on the mounting frame 4; a supporting leg 15 is connected to the connecting piece 14, and the supporting leg 15 is sleeved on the mounting frame 4; a mounting ring tube 16 is fixedly installed on the outer edge of the seat surface 12, and a tightening belt 17 is provided on the bottom surface of the mounting ring tube 16; a fixing piece 18 is provided on the bottom surface of the mounting ring tube 16 at the position corresponding to each telescopic tube 13; a groove for accommodating the telescopic tube 13 is provided on the side of the supporting leg 15 facing the telescopic tube 13.

[0026] Working principle: When unfolding, first rotate the rotating part 6 counterclockwise, and the rotating part 6 will drive the rotating part 2 to rotate. Because the rotating part 2 is fixed inside the shell 1 by the limit part 5 and the positioning part 8, the rotating part 2 only rotates and does not move up and down; and because the rotating part 2 is connected to the linkage part 3 by internal and external threads, the rotating part 2 will drive the linkage part 3 to move upward after it rotates. During the upward movement of the linkage part 3, the end of the mounting frame 4 close to the shell 1 will be pushed upward, and the other end of the mounting frame 4 will move downward. Because the mounting frame 4 is rotatably mounted on the shell 1 through the mounting ear 11, the mounting frame 4 will rotate under the joint action of the mounting ear 11 and the linkage part 3; and the support leg 15 is sleeved on the mounting frame 4, so that the mounting frame 4 rotates When the telescopic tube 13 is rotated on the mounting frame 4 by the connecting member 14, the mounting frame 4 can drive the telescopic tube 13 to rotate together, so that all the telescopic tubes 13 can be changed from the gathered state to the expanded state; and when the end of the telescopic tube 13 is turned away, it will drive the mounting ring tube 16 to expand. After the mounting ring tube 16 is expanded, the seat surface 12 can be expanded, so that the entire folding chair can be used; at the same time, when in use, the inclination angle of the seat surface 12 can be adjusted by adjusting the length of the telescopic tube 13 at different positions, thereby adapting to different body types or sitting habits and expanding the scope of application.

[0027] When the folding chair is to be stored, the telescopic tube 13 is first retracted to the shortest distance; then the rotating member 6 is rotated clockwise, so that the rotating member 2 rotates and the linkage member 3 rotates, so that the linkage member 3 moves downward, and the linkage member 3 moves and drives the mounting frame 4 to rotate upward. When the mounting frame 4 rotates upward, it drives the legs 15 to rotate upward together, so that the legs 15 rotate upward and retract; because the telescopic tube 13 is rotatably connected to the mounting frame 4 through the connecting member 14, and the legs 15 are provided with a storage groove for storing the telescopic tube 13, During the process of rotating and retracting the legs 15, the telescopic tube 13 will first be hidden in its storage groove, and as the legs 15 continue to retract, the telescopic tube 13 will be driven to rotate upward to fold and retract. When the telescopic tube 13 is folded, the mounting ring tube 16 and the seat 12 will be driven to fold, until all the legs 15 are vertically distributed on the side of the shell 1. Finally, the tightening belt 17 can be used to fix the shell of the folded folding chair. It is very convenient to operate, and the volume of the entire folding chair is minimized in the folded state, which is convenient to carry.

Claims

1. A folding structure for a folding chair that is easy to operate, characterized by: The invention comprises a housing (1), wherein a rotating member (2) is provided in the middle of the housing (1); a linkage member (3) is rotatably mounted on the rotating member (2), and a plurality of annular evenly distributed mounting frames (4) are rotatably mounted on the side wall of the linkage member (3); each mounting frame (4) is located on the outer surface of the housing (1); an external thread is provided on the surface of the rotating member (2), and an internal thread is provided on the inner wall of the linkage member (3); the rotating member (2) and the linkage member (3) are connected to each other via the external thread and the internal thread; a limiting member (5) is provided at one end of the rotating member (2), and a rotating member (6) is installed at the other end; the limiting member (5) is arranged in the housing (1), and the rotating member (6) is arranged at the bottom end of the housing (1).

2. The folding structure for a folding chair that is easy to operate according to claim 1, characterized in that: A clamping groove (7) is provided on the inner wall of the housing (1) near the end of the rotating member (6), and a positioning member (8) mounted on the rotating member (2) is provided in the clamping groove (7).

3. The folding structure for a folding chair that is easy to operate according to claim 1, characterized in that: A plurality of evenly distributed hooks (9) are provided in a ring shape on the bottom surface of the housing (1) near the end of the rotating member (6), and the hooks (9) are provided directly below the mounting frame (4).

4. The folding structure for a folding chair that is easy to operate according to claim 3, characterized in that: A hook (9) is also provided on the bottom surface of the linkage member (3) at a position corresponding to each installation frame (4), and a limiting groove is provided on the bottom surface of the installation frame (4) at a position corresponding to the hook (9).

5. The folding structure for a folding chair that is easy to operate according to claim 1, characterized in that: A protrusion is provided on the top surface of the linkage member (3) at a position corresponding to each mounting frame (4), and the top surface of the protrusion is fixedly connected to the inner bottom surface of the mounting frame (4); a mounting member (10) is provided on the housing (1) at a position corresponding to each of two adjacent mounting frames (4), and symmetrically distributed mounting ears (11) are provided on both side surfaces of the mounting member (10); the mounting ears (11) are rotatably connected to the mounting frame (4).

6. A folding chair, characterized in that: The invention comprises a seat (12) and a folding structure as claimed in any one of claims 1 to 5, wherein a plurality of evenly distributed telescopic tubes (13) are provided on the bottom surface of the seat (12), and the seat (12) is rotatably mounted on the folding structure via the telescopic tubes (13).

7. The folding chair according to claim 6, characterized in that: A connecting piece (14) is installed on the end of the telescopic tube (13) corresponding to the mounting frame (4), and the connecting piece (14) is rotatably mounted on the mounting frame (4); a supporting leg (15) is connected to the connecting piece (14), and the supporting leg (15) is sleeved on the mounting frame (4).

8. The folding chair according to claim 7, characterized in that: A mounting ring tube (16) is fixedly mounted on the outer edge of the seat surface (12), and a tightening belt (17) is provided on the bottom surface of the mounting ring tube (16); a fixing piece (18) is provided on the bottom surface of the mounting ring tube (16) at a position corresponding to each telescopic tube (13); and a groove for accommodating the telescopic tube (13) is provided on the side surface of the support leg (15) facing the telescopic tube (13).

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