Joint component for folding chair and folding chair applying joint component

Abstract

The utility model relates to the technical field of seats, in particular to a joint component for a folding chair and the folding chair applying the joint component. A joint component for a folding chair comprises a first connecting body and a second connecting body, one end of the first connecting body and one end of the second connecting body are rotationally connected, the mutually-connected ends of the first connecting body and the second connecting body are connecting ends, the other ends of the first connecting body and the second connecting body are movable ends, a first supporting part is formed at the connecting end of the first connecting body, and a first supporting opening is formed at the connecting end of the second connecting body. When the first connecting body is rotationally opened relative to the second connecting body, the first supporting part is rotationally inserted into and supported in the first supporting opening along with the first connecting body, so that a locking state is formed. At the moment, supporting and locking of the first connecting body and the second connecting body after opening are achieved through attached supporting between the first supporting face and the second supporting face in the first supporting part and the first supporting opening and attached supporting between the third supporting face and the fourth supporting face, the supporting strength is large, and the supporting effect is good.

Description

Technical Field

[0001] The present application relates to the technical field of seats, and in particular to a joint component for a folding chair and a folding chair using the joint component. Background Art

[0002] At present, as people's quality of life continues to improve, they often need to go camping in their spare time after work, and folding chairs are essential equipment for camping. In folding chairs, joint components are usually needed to connect two connection structures to form a rotation connection, and after the folding chairs are opened, the joint components can be used to support and lock them.

[0003] However, the current joint components are usually locked in a planar support manner after opening through a single end face, and this support and locking method has relatively poor support strength and support effect. Therefore, further improvements can be made. Summary of the invention

[0004] In order to further improve the supporting strength and supporting effect of the joint component, the present application provides a joint component for a folding chair and a folding chair using the joint component.

[0005] In a first aspect, the present application provides a joint component for a folding chair, which adopts the following technical solution:

[0006] A joint component for a folding chair, comprising a first connector and a second connector, wherein one end of the first connector and the second connector are rotatably connected to each other, and the end at which they are connected to each other is a connecting end, and the other end is a movable end; a first supporting portion is formed at the connecting end of the first connector, and a first supporting opening is formed at the connecting end of the second connector, and when the first connector is rotated and opened relative to the second connector, the first supporting portion is rotationally inserted into and supported in the first supporting opening along with the first connector; an end surface of the first supporting portion is a first supporting surface, an inner end surface of the first supporting opening is a second supporting surface, a third supporting surface is formed between the upper and lower sides of the first supporting portion and the first connector, an outer end surface of the first supporting opening is a fourth supporting surface, and after the first supporting portion is rotationally inserted into the first supporting opening, the first supporting surface is supported on the second supporting surface, and the third supporting surface is supported on the fourth supporting surface.

[0007] By adopting the above technical solution, in the actual practical process, the two movable ends of the first connector and the second connector are respectively used to connect with two external structures to form a rotatable joint point. When the first connector is rotated and opened relative to the second connector, the first support portion is inserted and supported in the first support opening along with the first connector to form a locked state after opening. At this time, the fitting support between the first support surface and the second support surface and the fitting support between the third support surface and the fourth support surface are used to realize the support locking of the first connector and the second connector after opening, and the support strength is relatively large and the support effect is better.

[0008] Optionally, the first support portion is formed with a second support portion at the first support surface, a second support port is formed in the first support port at the second support surface, the peripheral side surface of the second support portion is a fifth support surface, the peripheral side surface of the second support port is a sixth support surface, and after the first support portion is rotationally inserted into the first support port, the second support portion is inserted into the second support port, and the fifth support surface is supported on the sixth support surface.

[0009] By adopting the above technical solution and utilizing the fitted support between the fifth support surface and the sixth support surface, the stability and support strength of the support locking of the first connector and the second connector after opening are further improved.

[0010] Optionally, the second connecting body is formed with a third supporting portion at the fourth supporting surface, and the first connecting body is formed with a third supporting port at the third supporting surface, the peripheral side surface of the third supporting portion is the seventh supporting surface, the peripheral side surface of the third supporting port is the eighth supporting surface, and after the first supporting portion is rotationally inserted into the first supporting port, the third supporting portion is plugged into the third supporting port, and the seventh supporting surface is supported on the eighth supporting surface.

[0011] By adopting the above technical solution and utilizing the fitted support between the seventh support surface and the eighth support surface, the stability and support strength of the support locking of the first connector and the second connector after opening are further improved.

[0012] Optionally, the movable ends of the first connector and the second connector are both rod-shaped, and installation step surfaces are formed on the left and right sides of the movable ends of the first connector and the second connector.

[0013] By adopting the above technical solution, during the installation process, the movable ends of the first connector and the second connector are connected to the two external structures by plugging, and are locked and fixed by bolts and nuts after plugging. In this process, the installation step surface can be used as the installation positioning reference surface for plugging and positioning, which facilitates the actual installation work.

[0014] Optionally, the mounting step surface at the movable end of the first connector extends to the inner height of the third supporting opening.

[0015] By adopting the above technical solution, when the movable end of the first connector is connected to the external connecting structure by plugging, the external connecting structure is sleeved on the movable end of the first connector and extends to the internal height position of the third support opening. When the first connector is rotated and opened relative to the second connector, the third support part is plugged into the third support opening. At this time, the external connecting structure can seal the insertion part of the third support part, which can not only protect the insertion part, but also further improve the plug-in stability of the third support part and the third support opening.

[0016] In a second aspect, the present application provides a folding chair, which adopts the following technical solution:

[0017] A folding chair comprises a front leg, a rear leg, a seat, a chair back and an armrest, wherein the front leg and the rear leg are hinged to be opened or folded; the rear end of the seat is rotatably connected to the top of the front leg, the front end of the seat is rotatably mounted with support rods on both the left and right sides, and the support rods are connected to the top of the rear legs through the above-mentioned joint component for a folding chair; the bottom of the chair back is rotatably connected to the top of the front leg, the armrests are mounted on the left and right sides of the chair back, the rear ends of the armrests are rotatably connected to the chair back, and the front ends of the armrests are movably connected to the tops of the support rods.

[0018] By adopting the above technical solution, when opening the seat, one hand holds the backrest and the other hand holds the armrest to pull the backrest and armrest in the opposite direction. In this process, the support rod drives the seat, front legs and rear legs to open, and after fully opening, they are limited and locked under the action of the joint components to maintain the open state. Similarly, when the seat needs to be folded, one hand holds the backrest and the other hand holds the armrest to close the backrest and armrest in the opposite direction. In this process, the support rod drives the seat, front legs and rear legs to close and fold to form a folded state.

[0019] Optionally, a connecting seat is installed at the bottom of the armrest, and a long sliding hole is opened on the connecting seat. The top of the support rod is slidably connected to the long sliding hole through a sliding member. A plurality of oblique snap-in slots are formed in the long sliding hole. The oblique snap-in slots are arranged at intervals along the length direction of the long sliding hole. The oblique snap-in slots are inclined toward the front direction and can be snapped into by the sliding member.

[0020] By adopting the above technical solution, when folding the seat, one hand holds the seat back and the other hand holds the armrest to pull the seat back and the armrest apart in the opposite direction, and the sliding piece at the top of the support rod falls from the oblique slot into the long sliding hole to unlock the sliding piece, so that the sliding piece can move along the long sliding hole during the process of folding the seat until the folding work is completed. Similarly, when opening the seat, one hand holds the seat back and the other hand holds the armrest to close the seat back and the armrest in the opposite direction, and the sliding piece at the top of the support rod moves along the long sliding hole, and after fully opening, the armrest is put down, and the sliding piece at the top of the support rod falls from the long sliding hole into the oblique slot to be locked to fix the seat back.

[0021] Optionally, it also includes a support body installed on the seat and the backrest, which is used to support the buttocks and back of the human body.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. In actual practical use, the two movable ends of the first connector and the second connector are respectively used to connect with two external structures to form a rotatable joint point. When the first connector is rotated and opened relative to the second connector, the first support portion is inserted and supported in the first support opening along with the first connector to form a locked state after opening. At this time, the fit-fitting support between the first support surface and the second support surface, and the fit-fitting support between the third support surface and the fourth support surface are used to achieve the support locking of the first connector and the second connector after opening, and the support strength is relatively large and the support effect is better;

[0024] 2. Using the fitting support between the fifth support surface and the sixth support surface to further improve the stability and support strength of the support locking of the first connector and the second connector after opening;

[0025] 3. The fitting support between the seventh support surface and the eighth support surface is used to further improve the stability and support strength of the support locking of the first connector and the second connector after opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of a joint component for a folding chair of the present application.

[0027] Figure 2 It is a structural schematic diagram of a cross-section of a second connector in a joint component for a folding chair of the present application.

[0028] Figure 3 It is a schematic diagram of the overall structure of a folding chair of the present application.

[0029] Figure 4 yes Figure 3 Enlarged view of part A.

[0030] Figure 5 yes Figure 3 Enlarged view of part B.

[0031] Description of reference numerals:

[0032] 1. First connector; 2. Second connector; 3. First support part; 4. First support opening; 5. First support surface; 6. Second support surface; 7. Third support surface; 8. Fourth support surface; 9. Second support part; 10. Second support opening; 11. Fifth support surface; 12. Sixth support surface; 13. Third support part; 14. Third support opening; 15. Seventh support surface; 16. Eighth support surface; 17. Mounting step surface; 100. Front support leg; 200. Rear support leg; 300. Seat; 400. Chair back; 500. Armrest; 600. Support body; 700. Support rod; 800. Joint component; 900. Connecting seat; 901. Long sliding hole; 902. Oblique bayonet; 903. Sliding part. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-5 This application is described in further detail.

[0034] The embodiment of the present application discloses a joint component for a folding chair.

[0035] Reference Figure 1 A joint component for a folding chair includes a first connector 1 and a second connector 2. One end of the first connector 1 and the second connector 2 are rotatably connected to each other, and one end of the connection is a connecting end and the other end is a movable end. The two movable ends of the first connector 1 and the second connector 2 are respectively used to connect with two external structures to form a rotatable joint point.

[0036] Reference Figure 1 A first supporting portion 3 is formed at the connecting end of the first connecting body 1, and a first supporting opening 4 is formed at the connecting end of the second connecting body 2. The first supporting portion 3 is plugged into and fitted with the first supporting opening 4, and when the first connecting body 1 is rotated and opened relative to the second connecting body 2, the first supporting portion 3 is rotationally inserted into and supported in the first supporting opening 4 along with the first connecting body 1 to form a locked state after opening.

[0037] Among them, the end face of the first support part 3 is the first support surface 5, the inner end face of the first support opening 4 is the second support surface 6, the upper and lower sides of the first support part 3 form a third support surface 7 with the first connecting body 1, the outer end face of the first support opening 4 is the fourth support surface 8, and after the first support part 3 is rotationally inserted into the first support opening 4, the first support surface 5 is supported on the second support surface 6, and the first support surface 5 is fitted with the second support, the third support surface 7 is supported on the fourth support surface 8, and the third support surface 7 is fitted with the fourth support surface 8, so as to utilize the fitting support between the first support surface 5 and the second support surface 6 and the fitting support between the third support surface 7 and the fourth support surface 8 to realize the support locking of the first connecting body 1 and the second connecting body 2 after opening, and its support strength is relatively large and the support effect is better.

[0038] Reference Figure 1 and Figure 2 In this embodiment, the first support portion 3 is formed with a second support portion 9 at the first support surface 5, and correspondingly, the first support opening 4 is formed with a second support opening 10 at the second support surface 6, wherein the second support portion 9 is in an eagle-beak shape, the peripheral side surface of the second support portion 9 is the fifth support surface 11, the peripheral side surface of the second support opening 10 is the sixth support surface 12, and the outer peripheral surface of the fifth support surface 11 facing outward is an arc surface, and the arc surface is arranged concentrically with the rotation center of the first connector 1 and the second connector 2. After the first support portion 3 is rotatably inserted into the first support opening 4, the second support portion 9 is then plugged into the second support opening 10, and the fifth support surface 11 is supported on the sixth support surface 12, and the fifth support surface 11 fits with the sixth support surface 12, so as to utilize the fitting support between the fifth support surface 11 and the sixth support surface 12 to further improve the stability and support strength of the support locking of the first connector 1 and the second connector 2 after opening.

[0039] Similarly, the second connector 2 is formed with a third support portion 13 at the fourth support surface 8, and correspondingly, the first connector 1 is formed with a third support opening 14 at the third support surface 7, wherein the third support portion 13 is in an eagle-beak shape, the peripheral side surface of the third support portion 13 is the seventh support surface 15, the peripheral side surface of the third support opening 14 is the eighth support surface 16, and the outer peripheral surface of the seventh support surface 15 facing outward is an arc surface, and the arc surface is arranged concentrically with the rotation center of the first connector 1 and the second connector 2. After the first support portion 3 is rotationally inserted into the first support opening 4, the third support portion 13 is then plugged into the third support opening 14, and the seventh support surface 15 is supported on the eighth support surface 16, and the seventh support surface 15 fits with the eighth support surface 16, so as to utilize the fitting support between the seventh support surface 15 and the eighth support surface 16 to further improve the stability and support strength of the support locking of the first connector 1 and the second connector 2 after opening.

[0040] Reference Figure 1 and Figure 2 In this embodiment, the movable ends of the first connector 1 and the second connector 2 are both rod-shaped, and both left and right sides of the movable ends of the first connector 1 and the second connector 2 are formed with mounting stepped surfaces 17. During the installation process, the movable ends of the first connector 1 and the second connector 2 are respectively connected to the two external structures by plugging, and are locked and fixed by bolts and nuts after plugging. In this process, the mounting stepped surface 17 can be used as the installation positioning reference surface for plugging and positioning, which is convenient for the actual installation work.

[0041] In this embodiment, the mounting step surface 17 at the movable end of the first connector 1 extends to the inner height of the third support opening 14. When the movable end of the first connector 1 is connected to the external connection structure by plugging, the external connection structure is sleeved on the movable end of the first connector 1 and extends to the inner height position of the third support opening 14. When the first connector 1 is rotated and opened relative to the second connector 2, the third support portion 13 is plugged into the third support opening 14. At this time, the external connection structure can cover the pointed part of the insertion part of the third support portion 13, which can not only protect the insertion part, but also further improve the plugging stability of the third support portion 13 and the third support opening 14.

[0042] Reference Figure 1 In this embodiment, the first connector and the second connector are both formed by stacking multiple layers of plates. In actual use, the required thickness can be obtained by changing the number of layers of plates according to needs to adapt to the needs of connecting different seat joints. In this embodiment, the first connector and the second connector are both made of aluminum alloy. In other embodiments, the first connector and the second connector can be made of steel, plastic, wood and other types of materials, which can be selected according to the actual use scenario.

[0043] The implementation principle of a joint component for a folding chair in the embodiment of the present application is as follows:

[0044] In actual practical use, the two movable ends of the first connector 1 and the second connector 2 are respectively used to connect with two external structures to form a rotatable joint point.

[0045] When the first connecting body 1 is rotated and opened relative to the second connecting body 2, the first support portion 3 is rotationally inserted and supported in the first support opening 4 along with the first connecting body 1. At the same time, the second support portion 9 is plugged into the second support opening 10, and the third support portion 13 is plugged into the third support opening 14 to form a locked state after opening.

[0046] At this time, the support locking of the first connector 1 and the second connector 2 after opening is achieved by utilizing the fit-fit support between the first support portion 3 and the first support surface 5 and the second support surface 6 in the first support opening 4, the fit-fit support between the third support surface 7 and the fourth support surface 8, the fit-fit support between the second support portion 9 and the fifth support surface 11 and the sixth support surface 12 in the second support opening 10, and the fit-fit support between the third support portion 13 and the seventh support surface 15 and the eighth support surface 16 in the third support opening 14, with relatively large support strength and better support effect.

[0047] The embodiment of the present application also discloses a folding chair.

[0048] Reference Figure 3 A folding chair includes a front leg 100, a rear leg 200, a seat 300, a backrest 400 and an armrest 500. A support body 600 is installed on the seat 300 and the backrest 400 for supporting the buttocks and back of a human body.

[0049] Reference Figure 3 and Figure 4 , wherein the front leg 100 and the rear leg 200 are hingedly arranged to be opened or folded. The rear end of the seat 300 is rotatably connected to the top of the front leg 100, and the front end of the seat 300 is supported and connected to the top of the rear leg 200 by the support rod 700, and the support rod 700 is arranged on the left and right sides of the seat 300 and is rotatably connected to the seat 300, and the bottom of the support rod 700 is connected to the top of the rear leg 200 through the above-mentioned folding chair joint component 800, the connecting end of the first connector 1 in the joint component 800 is plugged and fixedly connected to the bottom of the support rod 700, and the connecting end of the second connector 2 in the joint component 800 is plugged and fixedly connected to the top of the rear leg 200, at this time, the joint component 800 opens with the opening of the front leg 100 and the rear leg 200, so that the seat 300 can be opened or folded through the support rod 700 when the front leg 100 and the rear leg 200 are opening or closing.

[0050] Reference Figure 3 The bottom of the chair back 400 is rotatably connected to the top of the front leg 100, and the armrests 500 are installed on the left and right sides of the chair back 400. The rear end of the armrests 500 is rotatably connected to the chair back 400, and the front end of the armrests 500 is movably connected to the top of the support rod 700. In this way, the seat 300 can be opened or folded through the armrests 500 and the support rod 700 when the front leg 100 and the rear leg 200 are opened or folded.

[0051] When opening the seat, one hand holds the backrest 400 and the other hand holds the armrest 500 to pull the backrest 400 and the armrest 500 apart in the opposite direction. In this process, the support rod 700 drives the seat 300, the front leg 100, and the rear leg 200 to open. After fully opening, they are limited and locked under the action of the joint component 800 to maintain the open state. Similarly, when the seat needs to be folded, one hand holds the backrest 400 and the other hand holds the armrest 500 to close the backrest 400 and the armrest 500 in the opposite direction. In this process, the support rod 700 drives the seat 300, the front leg 100, and the rear leg 200 to close and fold to form a folded state.

[0052] Reference Figure 5 Specifically, in this embodiment, a connection seat 900 is installed at the bottom of the handrail 500, and a long sliding hole 901 is opened on the connection seat 900, and the long sliding hole 901 extends in the length direction of the handrail 500; the top of the support rod 700 is slidably connected to the long sliding hole 901 through a sliding member 903, and the support rod 700 is rotated relative to the inside of the long sliding hole 901 through the sliding member 903. A plurality of oblique bayonet holes 902 are formed in the long sliding hole 901, and the oblique bayonet holes 902 are arranged at intervals along the length direction of the long sliding hole 901, and the oblique bayonet holes 902 are inclined toward the front side and can be engaged with the sliding member 903.

[0053] When folding the seat, when holding the backrest 400 with one hand and the armrest 500 with the other hand, the backrest 400 and the armrest 500 are pulled apart in the opposite direction, the sliding member 903 at the top of the support rod 700 falls into the long sliding hole 901 from the oblique bayonet 902 to unlock the sliding member 903, so that the sliding member 903 can move along the long sliding hole 901 during the process of folding the seat until the folding work is completed. Similarly, when opening the seat, when holding the backrest 400 with one hand and the armrest 500 with the other hand, the backrest 400 and the armrest 500 are folded together in the opposite direction, the sliding member 903 at the top of the support rod 700 moves along the long sliding hole 901, and after fully opening, the armrest 500 is put down, and the sliding member 903 at the top of the support rod 700 falls into the oblique bayonet 902 from the long sliding hole 901 to be locked, so as to fix the backrest 400.

[0054] Reference Figure 3 Specifically, in this embodiment, the support bodies 600 on the seat 300 and the backrest 400 are support plates, and the support plates are arranged at intervals. In other embodiments, the support bodies 600 on the seat 300 and the backrest 400 can be supported in the form of cloth, mesh, etc.

[0055] The implementation principle of a folding chair in the embodiment of the present application is:

[0056] When opening the seat, one hand holds the backrest 400 and the other hand holds the armrest 500 to pull the backrest 400 and the armrest 500 apart in the opposite direction. In this process, the support rod 700 drives the seat 300, the front leg 100, and the rear leg 200 to open. After fully opening, they are limited and locked under the action of the joint component 800 to maintain the open state. Similarly, when the seat needs to be folded, one hand holds the backrest 400 and the other hand holds the armrest 500 to close the backrest 400 and the armrest 500 in the opposite direction. In this process, the support rod 700 drives the seat 300, the front leg 100, and the rear leg 200 to close and fold to form a folded state.

[0057] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A joint component for a folding chair, characterized in that: The invention comprises a first connecting body (1) and a second connecting body (2), wherein one end of the first connecting body (1) and the second connecting body (2) are rotatably connected to each other, and the end at which they are connected to each other is a connecting end, and the other end is a movable end; the connecting end of the first connecting body (1) is formed with a first supporting portion (3), and the connecting end of the second connecting body (2) is formed with a first supporting opening (4); and when the first connecting body (1) is rotated and opened relative to the second connecting body (2), the first supporting portion (3) is rotatably inserted into and supported on the first supporting portion along with the first connecting body (1). The first support portion (3) is provided with a first support surface (5), an inner end surface of the first support surface (4) is provided with a second support surface (6), a third support surface (7) is formed between the upper and lower sides of the first support portion (3) and the first connecting body (1), an outer end surface of the first support surface (4) is provided with a fourth support surface (8), and after the first support portion (3) is rotatably inserted into the first support surface (4), the first support surface (5) is supported on the second support surface (6), and the third support surface (7) is supported on the fourth support surface (8).

2. A joint component for a folding chair according to claim 1, characterized in that: The first supporting portion (3) is formed with a second supporting portion (9) at the first supporting surface (5), a second supporting opening (10) is formed in the first supporting opening (4) at the second supporting surface (6), the peripheral side surface of the second supporting portion (9) is a fifth supporting surface (11), the peripheral side surface of the second supporting opening (10) is a sixth supporting surface (12), and after the first supporting portion (3) is rotationally inserted into the first supporting opening (4), the second supporting portion (9) is plugged into the second supporting opening (10), and the fifth supporting surface (11) is supported on the sixth supporting surface (12).

3. The joint component for a folding chair according to claim 1, characterized in that: The second connecting body (2) is formed with a third supporting portion (13) at the fourth supporting surface (8), the first connecting body (1) is formed with a third supporting opening (14) at the third supporting surface (7), the peripheral side surface of the third supporting portion (13) is a seventh supporting surface (15), the peripheral side surface of the third supporting opening (14) is an eighth supporting surface (16), and after the first supporting portion (3) is rotationally inserted into the first supporting opening (4), the third supporting portion (13) is plugged into the third supporting opening (14), and the seventh supporting surface (15) is supported on the eighth supporting surface (16).

4. A joint component for a folding chair according to claim 3, characterized in that: The movable ends of the first connector (1) and the second connector (2) are both rod-shaped, and installation step surfaces (17) are formed on the left and right sides of the movable ends of the first connector (1) and the second connector (2).

5. The joint component for a folding chair according to claim 4, characterized in that: The mounting step surface (17) at the movable end of the first connector (1) extends to the inner height of the third supporting opening (14).

6. A folding chair, characterized in that: The invention comprises a front leg (100), a rear leg (200), a seat (300), a chair back (400) and an armrest (500); the front leg (100) and the rear leg (200) are hingedly arranged to be opened or folded; the rear end of the seat (300) is rotatably connected to the top of the front leg (100); the front end of the seat (300) is rotatably mounted with support rods (700) on both left and right sides, and the support rods (700) are connected by The joint component (800) for a folding chair described in any one of claims 1 to 5 is connected to the top of the rear leg (200); the bottom of the chair back (400) is rotatably connected to the top of the front leg (100), the armrest (500) is installed on the left and right sides of the chair back (400), and the rear end of the armrest (500) is rotatably connected to the chair back (400), and the front end of the armrest (500) is movably connected to the top of the support rod (700).

7. A folding chair according to claim 6, characterized in that: A connecting seat (900) is installed at the bottom of the armrest (500), and a long sliding hole (901) is opened on the connecting seat (900). The top of the support rod (700) is slidably connected to the long sliding hole (901) through a sliding member (903). A plurality of oblique snap-in slots (902) are formed in the long sliding hole (901), and the oblique snap-in slots (902) are arranged at intervals along the length direction of the long sliding hole (901). The oblique snap-in slots (902) are inclined toward the front side and can be snapped with the sliding member (903).

8. The folding chair according to claim 6, characterized in that: It also includes a support body (600) installed on the seat (300) and the chair back (400) and used for supporting the buttocks and back of a human body.

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