Self-locking connecting rod structure and folding chair

Abstract

The utility model provides a self-locking connecting rod structure and a folding chair, the self-locking connecting rod structure comprises: a support assembly, the support assembly comprises a seat rod and a leaning rod, the middle parts of which are hinged with each other; the connecting assembly comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged to one end of the second connecting rod, the other end of the first connecting rod is hinged to the seat rod, the other end of the second connecting rod is hinged to the leaning rod, and the first connecting rod, the second connecting rod, the seat rod and the leaning rod form a four-connecting-rod structure; the limiting column is fixed on the supporting assembly; according to the self-locking connecting rod structure and the folding chair disclosed by the utility model, the framework consisting of the four-connecting-rod structure is utilized, so that the folding chair can be quickly unfolded while the storage space is ensured to be small enough, and the problems that the folding chair in the prior art cannot realize small storage space and simple assembly process at the same time are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of folding chairs, in particular to a self-locking connecting rod structure and a folding chair. Background Art

[0002] With the continuous progress of society, the pace of daily work and study is getting faster and faster. In order to recover quickly, more and more people choose outdoor activities as a weekend or daily relaxation and entertainment activity. Among the many outdoor activities, outdoor camping has become the first choice for many people.

[0003] Since the various equipment required for outdoor camping are mostly transported by private cars, and due to the limited space in the car, most outdoor camping equipment adopts a foldable design for easy storage and transportation, such as folding tents, folding tables and folding chairs; the existing outdoor folding chairs, such as the commonly used moon chair, are composed of a plurality of pipes and canvas. Although the storage state occupies a small space, the assembly process is relatively cumbersome due to the excessive disassembly of the structure. Therefore, a folding chair is needed that is easy to assemble while having a small storage space. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a self-locking connecting rod structure and a folding chair, so as to solve the problem that the folding chair in the prior art cannot achieve both a small storage space and a simple assembly process.

[0005] In order to solve the above technical problems, the utility model provides a self-locking connecting rod structure, comprising:

[0006] A support assembly, the support assembly comprising a seat rod and a support rod hinged to each other in the middle;

[0007] A connecting assembly, the connecting assembly comprising a first connecting rod and a second connecting rod, one end of the first connecting rod and the second connecting rod being hinged to each other, and the other end being hinged to the seat rod and the leaning rod respectively, the first connecting rod, the second connecting rod, the seat rod and the leaning rod forming a four-link structure;

[0008] A limiting column, wherein the limiting column is fixed on the supporting assembly;

[0009] When the seat rod and the back rod rotate to the locked position around their hinge points, the seat rod and the back rod cross at a certain angle, and at the same time, the connecting assembly is limited by the limit column, and downward pressure is applied to the support assembly. The pressure transmitted to the supporting assembly by the support assembly pushes the connecting assembly to rotate toward the limit column, but is limited by the limit column. At this time, the self-locking link structure is in a locked state; when unlocking, an upward thrust is applied to the supporting assembly to rotate the connecting assembly toward the side away from the limit column, and the self-locking link structure can be unlocked. Then, when the seat rod and the back rod are rotated around their hinge points to overlap with each other, the first link and the second link also rotate around their hinge points to overlap with each other. At this time, the self-locking link structure is in a folded state.

[0010] As a more preferred embodiment, the other end of the first connecting rod is hinged to the side of the seat rod close to the lean rod; the other end of the second connecting rod is hinged to the side of the lean rod close to the seat rod. When the self-locking connecting rod structure is in a folded state, the first connecting rod and the second connecting rod can also rotate around their hinge points to overlap with each other, thereby avoiding interference between the seat rod and the lean rod during the rotation of the first connecting rod and the second connecting rod.

[0011] As a more preferred manner, the limiting column is arranged on the leaning rod, and when the seat rod and the leaning rod rotate to a locking position around their hinge points, the second connecting rod is limited by the limiting column.

[0012] As a more preferred manner, the limiting column is arranged on the leaning rod, and when the seat rod and the leaning rod rotate to a locking position around their hinge points, the first connecting rod is limited by the limiting column.

[0013] In order to solve the above problems, the utility model also provides a folding chair, comprising:

[0014] The above self-locking connecting rod structures are arranged in pairs;

[0015] Two seat connecting beams, two ends of the two seat connecting beams are respectively connected to the two ends corresponding to the two seat rods, and the two seat connecting beams and the two seat rods enclose a seat cushion frame;

[0016] Two connecting beams, two ends of which are connected to two ends of the two supporting rods respectively, and the two connecting beams and the two supporting rods form a back supporting frame;

[0017] The two seat rods and the backrest rod are rotated around their hinge points to a locked position, at which time the two self-locking link structures are in a locked state, the seat cushion frame and the backrest frame intersect at a certain angle, and the folding chair is unfolded; then the two self-locking link structures can be unlocked, and the two seat rods and the backrest rod are rotated so that the two self-locking link structures are in a folded state, and the folding chair is folded.

[0018] As a more preferred manner, the seat cushion frame is covered with a flexible material to facilitate supporting the user.

[0019] As a more preferred manner, the backrest frame is covered with a flexible material to facilitate supporting the user.

[0020] As a more preferred embodiment, the seat cushion frame also includes a seat cushion arc-shaped transition rod, and the seat connecting beam and the seat rod are connected by the seat cushion arc-shaped transition rod. The seat cushion arc-shaped transition rod makes the connection between the seat connecting beam and the seat rod smoother, and the appearance of the folding chair is more beautiful. At the same time, it avoids the connection between the seat connecting beam and the seat rod from becoming sharp, thereby increasing safety.

[0021] As a more preferred embodiment, the backrest frame further comprises a backrest arc-shaped transition rod, and the backrest connecting beam and the backrest rod are connected by the backrest arc-shaped transition rod. The backrest arc-shaped transition rod makes the connection between the backrest connecting beam and the backrest rod smoother, and the appearance of the folding chair is more beautiful. At the same time, it avoids the connection between the backrest connecting beam and the backrest rod from becoming sharp, thereby increasing safety.

[0022] As a more preferred embodiment, the length of the seat rod is shorter than the back rod, the seat connecting beam is also shorter than the back connecting beam, and the seat cushion frame is hinged to the inner side of the backrest frame as a whole. When the folding chair is folded, the seat cushion frame is stored in the backrest frame, further saving storage space.

[0023] As described above, the self-locking connecting rod structure and folding chair of the utility model have the following beneficial effects: when the self-locking connecting rod structure of the utility model is in use, the seat rod and the back rod rotate around their hinge points to a locked position, the seat rod and the back rod cross at a certain angle, and at the same time, the connecting assembly is limited by the limiting column, and a downward pressure is applied to the support assembly, and the pressure transmitted by the support assembly to the connecting assembly pushes the connecting assembly to rotate toward the side of the limiting column, but is limited by the limiting column, at this time, the self-locking connecting rod structure is in a locked state; when unlocking, an upward thrust is applied to the support assembly, so that the connecting assembly rotates toward the side away from the limiting column, and the self-locking connecting rod structure can be unlocked, and then the seat rod and the back rod rotate around their hinge points to a position where they overlap with each other, and the first connecting rod and the second connecting rod also rotate around their hinge points to a position where they overlap with each other, at this time, the self-locking connecting rod structure is in a folded state, and the self-locking connecting rod structure of the utility model can be conveniently and quickly switched between the unlocked state and the folded state;

[0024] The folding chair of the utility model adopts the above-mentioned self-locking connecting rod structure, which makes the two seat rods and the backrest rod rotate around their hinge points to the locked position when in use. At this time, the two self-locking connecting rod structures are in the locked state, the seat cushion frame and the backrest frame cross at a certain angle, and the folding chair is unfolded, and the seat connecting beam and the backrest connecting beam are abutted against the ground to provide support. At this time, the user can sit on the seat cushion frame and lean on the backrest frame; then, the two self-locking connecting rod structures can be unlocked, and the two seat rods and the backrest rod are rotated to make the two self-locking connecting rod structures in the folded state, and the folding chair is folded. Since the seat cushion frame and the backrest frame overlap each other at this time, the space required for storage is greatly saved. In addition, since the folding chair of the utility model does not disrupt the connection relationship between the various components during the storage process, when unfolding, it is only necessary to rotate the corresponding seat rod and the backrest rod to reach the specified position, which is very simple and quick.

[0025] In summary, the self-locking connecting rod structure and folding chair of the present invention utilize a skeleton composed of a four-link structure to ensure that the storage space is small enough while also being able to be quickly unfolded, thereby solving the problem in the prior art that the folding chair cannot simultaneously achieve a small storage space and a simple assembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Shown is a schematic diagram of the self-locking connecting rod structure of the utility model in a locked state;

[0027] Figure 2 Shown is a schematic diagram of the self-locking connecting rod structure of the utility model when unlocked;

[0028] Figure 3It is a schematic diagram showing the process of switching the self-locking connecting rod structure of the utility model from the locked state to the folded state;

[0029] Figure 4 Shown is a schematic diagram of the self-locking connecting rod structure of the utility model in a folded state;

[0030] Figure 5 Shown is a schematic diagram of the folding chair of the utility model being unfolded;

[0031] Figure 6 Shown is a schematic diagram of the folding chair of the utility model being folded.

[0032] Component number description

[0033] 1 Support components

[0034] 11 Seatpost

[0035] 12 Leaning on the pole

[0036] 2 Connecting components

[0037] 21 First connecting rod

[0038] 22 Second connecting rod

[0039] 3 Limiting column

[0040] 4 connecting beams

[0041] 5 By connecting beam

[0042] 6 Seat arc transition rod

[0043] 7 Back against the arc transition rod DETAILED DESCRIPTION

[0044] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0045] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that can be implemented in this utility model, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that can be produced by the utility model and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the utility model. The following detailed description should not be considered restrictive, and the scope of the embodiments of this application is limited only by the claims of the published patents. The terms used here are only for describing specific embodiments and are not intended to limit this application. Spatial related terms, such as "upper", "lower", "left", "right", "below", "below", "lower", "above", "upper", etc., can be used in the text to facilitate the description of the relationship between an element or feature shown in the figure and another element or feature.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "hold" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless there is an indication to the contrary in the context. It should be further understood that the terms "comprise", "include" indicate the presence of the described features, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Exceptions to this definition will only occur when the combination of elements, functions or operations is inherently mutually exclusive in some way.

[0048] like Figure 1 as well as Figure 4 As shown, the utility model provides a self-locking connecting rod structure, comprising:

[0049] A support assembly 1, the support assembly 1 comprising a seat rod 11 and a support rod 12 which are hinged to each other in the middle;

[0050] A connecting assembly 2, the connecting assembly 2 comprising a first connecting rod 21 and a second connecting rod 22, one end of the first connecting rod 21 and the second connecting rod 22 being hinged to each other, and the other end of the first connecting rod 21, the second connecting rod 22, the seat rod 11 and the leaning rod 12 forming a four-link structure;

[0051] A limiting column 3, wherein the limiting column 3 is fixed on the supporting assembly 1;

[0052] When the seat rod 11 and the lean rod 12 rotate to the locked position around their hinge points, the seat rod 11 and the lean rod 12 cross at a certain angle, and at the same time, the connecting component 2 is limited by the limiting column 3, and downward pressure is applied to the support component 1. The pressure transmitted to the connecting component 2 by the support component 1 pushes the connecting component 2 to rotate toward the limiting column 3, but is limited by the limiting column 3. At this time, the self-locking connecting rod structure is in a locked state; when unlocking, an upward thrust is applied to the support component 1, so that the connecting component 2 rotates toward the side away from the limiting column 3, and the self-locking connecting rod structure can be unlocked. Then, when the seat rod 11 and the lean rod 12 are rotated around their hinge points to overlap with each other, the first connecting rod 21 and the second connecting rod 22 are also rotated around their hinge points to overlap with each other. At this time, the self-locking connecting rod structure is in a folded state.

[0053] In order to better introduce the self-locking connecting rod structure of the utility model, it is explained in combination with specific applications below: when the self-locking connecting rod structure of the utility model is in use, the seat rod 11 and the leaning rod 12 rotate around their hinge points to a locked position, the seat rod 11 and the leaning rod 12 cross at a certain angle, and at the same time, the connecting component 2 is limited by the limiting column 3, and a downward pressure is applied to the supporting component 1. The pressure transmitted by the supporting component 1 to the connecting component 2 pushes the connecting component 2 to rotate toward the limiting column 3, but is limited by the limiting column 3. At this time, the self-locking connecting rod structure is in a locked state, such as Figure 1 When unlocked, Figure 2 as well as Figure 3 As shown, an upward thrust is applied to the support assembly 1, so that the connecting assembly 2 rotates toward the side away from the limiting column 3, and the self-locking connecting rod structure is unlocked. Then, when the seat rod 11 and the leaning rod 12 are rotated around their hinge points to overlap with each other, the first connecting rod 21 and the second connecting rod 22 are also rotated around their hinge points to overlap with each other. At this time, the self-locking connecting rod structure is in a folded state, as shown in FIG. Figure 4 As shown, the self-locking connecting rod structure of the utility model can be switched between the unlocked state and the folded state conveniently and quickly.

[0054] In this embodiment, if Figure 1 , Figure 2 as well as Figure 3 As shown, the other end of the first connecting rod 21 is hinged to the side of the seat rod 11 close to the leaning rod 12; the other end of the second connecting rod 22 is hinged to the side of the leaning rod 12 close to the seat rod 11. When the self-locking connecting rod structure is in a folded state, the first connecting rod 21 and the second connecting rod 22 can also rotate around their hinge points to overlap with each other, thereby avoiding interference between the seat rod 11 and the leaning rod 12 during the rotation of the first connecting rod 21 and the second connecting rod 22.

[0055] In this embodiment, if Figure 1 , Figure 2 as well as Figure 3 As shown, the limiting column 3 is arranged on the lean rod 12, and when the seat rod 11 and the lean rod 12 rotate to a locked position around their hinge points, the second connecting rod 22 is limited by the limiting column 3; further, as another embodiment, the limiting column 3 can also be arranged on the lean rod 12, and when the seat rod 11 and the lean rod 12 rotate to a locked position around their hinge points, the first connecting rod 21 is limited by the limiting column 3.

[0056] In order to solve the above problems, Figure 5 as well as Figure 6 As shown, the utility model also provides a folding chair, comprising:

[0057] The above self-locking connecting rod structures are arranged in pairs;

[0058] Two seat connecting beams 4, two ends of the two seat connecting beams 4 are respectively connected to the two ends of the two seat rods 11, and the two seat connecting beams 4 and the two seat rods 11 form a seat cushion frame;

[0059] Two connecting beams 5, two ends of the two connecting beams 5 are respectively connected to the two ends of the two supporting rods 12, and the two connecting beams 5 and the two supporting rods 12 form a backrest frame;

[0060] The two seat rods 11 and the backrest rod 12 are rotated around their hinge points to a locked position, at which time the two self-locking link structures are in a locked state, the seat cushion frame and the backrest frame intersect at a certain angle, and the folding chair is unfolded; then the two self-locking link structures can be unlocked, and the two seat rods 11 and the backrest rod 12 can be rotated so that the two self-locking link structures are in a folded state, and the folding chair is folded.

[0061] In order to better introduce the folding chair of the utility model, the following is explained in combination with specific applications: the folding chair of the utility model adopts the above-mentioned self-locking connecting rod structure. When in use, the two seat rods 11 and the backrest rod 12 are rotated around their hinge points to the locked position. At this time, the two self-locking connecting rod structures are in a locked state, the seat cushion frame and the backrest frame are crossed at a certain angle, and the folding chair is unfolded, and the seat connecting beam 4 and the backrest connecting beam 5 are abutted against the ground to provide support. At this time, the user can sit on the seat cushion frame and lean on the backrest frame; then the two self-locking connecting rod structures can be unlocked, and the two seat rods 11 and the backrest rod 12 can be rotated to make the two self-locking connecting rod structures in a folded state, and the folding chair is folded. Since the seat cushion frame and the backrest frame overlap each other at this time, the space required for storage is greatly saved, and since the folding chair of the utility model does not disrupt the connection relationship between the various components during the storage process, when unfolding, it is only necessary to rotate the corresponding seat rod 11 and the backrest rod 12 to reach the specified position, which is very simple and quick.

[0062] In this embodiment, the seat cushion frame is covered with a flexible material to facilitate supporting the user. The flexible material can be a textile product, or other materials such as leather products can be selected according to needs.

[0063] In this embodiment, the backrest frame is covered with a flexible material to facilitate supporting the user. The flexible material can be a textile product, or other materials such as leather products can be selected according to needs.

[0064] In this embodiment, if Figure 5 as well as Figure 6 As shown, the seat cushion frame also includes a seat cushion arc-shaped transition rod 6, and the seat connecting beam 4 and the seat rod 11 are connected by the seat cushion arc-shaped transition rod 6. The seat cushion arc-shaped transition rod 6 makes the connection between the seat connecting beam 4 and the seat rod 11 smoother, and the appearance of the folding chair is more beautiful. At the same time, it avoids the connection between the seat connecting beam 4 and the seat rod 11 from becoming sharp, thereby increasing safety.

[0065] In this embodiment, if Figure 5 as well as Figure 6 As shown, the backrest frame also includes a backrest arc-shaped transition rod 7, and the backrest connecting beam 5 and the backrest rod 12 are connected by the backrest arc-shaped transition rod 7. The backrest arc-shaped transition rod 7 makes the connection between the backrest connecting beam 5 and the backrest rod 12 smoother, and the appearance of the folding chair is more beautiful. At the same time, it avoids the connection between the backrest connecting beam 5 and the backrest rod 12 from becoming sharp, thereby increasing safety.

[0066] In this embodiment, if Figure 5 as well as Figure 6As shown, the length of the seat rod 11 is shorter than the backrest rod 12, the seat connecting beam 4 is also shorter than the backrest connecting beam 5, the seat cushion frame is hinged to the inner side of the backrest frame as a whole, and when the folding chair is folded, the seat cushion frame is stored in the backrest frame, further saving storage space; as another embodiment, the length of the seat rod 11 is longer than the backrest rod 12, the seat connecting beam 4 is also longer than the backrest connecting beam 5, the seat cushion frame is hinged to the outer side of the backrest frame as a whole, and when the folding chair is folded, the backrest frame is stored in the seat cushion frame; further, in this embodiment, Figure 5 As shown, four seat connecting beams 4 and four back connecting beams 5 are provided respectively.

[0067] At the same time, in this embodiment, the hinge positions of the backrest frame and the seat cushion frame can be adjusted, thereby adjusting the lengths of the seat cushion and the backrest to meet different usage requirements.

[0068] In summary, the self-locking connecting rod structure and folding chair of the present invention, using a frame composed of a four-link structure, can be quickly unfolded while ensuring that the storage space is small enough, solving the problem that the folding chair in the prior art cannot simultaneously achieve a small storage space and a simple assembly process. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0069] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A self-locking connecting rod structure, characterized in that: include: A support assembly (1), the support assembly (1) comprising a seat rod (11) and a support rod (12) which are hinged to each other at the middle; A connecting assembly (2), the connecting assembly (2) comprising a first connecting rod (21) and a second connecting rod (22), one end of the first connecting rod (21) and the second connecting rod (22) being hinged to each other, and the other end of the first connecting rod (21), the second connecting rod (22), the seat rod (11) and the leaning rod (12) being hinged to each other, respectively; the first connecting rod (21), the second connecting rod (22), the seat rod (11) and the leaning rod (12) forming a four-link structure; A limiting column (3), wherein the limiting column (3) is fixed on the supporting assembly (1); When the seat rod (11) and the back rod (12) rotate to a locked position around their hinge points, the seat rod (11) and the back rod (12) cross at a certain angle, and at the same time, the connecting component (2) is limited by the limiting column (3), and a downward pressure is applied to the support component (1). The pressure transmitted by the support component (1) to the connecting component (2) pushes the connecting component (2) to rotate toward the limiting column (3), but is limited by the limiting column (3). At this time, the self-locking connecting rod structure is in a locked state; when unlocking, an upward thrust is applied to the support component (1), so that the connecting component (2) rotates toward the side away from the limiting column (3), and the self-locking connecting rod structure is unlocked, and then the seat rod (11) and the back rod (12) are rotated around their hinge points to a position where they overlap with each other. At this time, the self-locking connecting rod structure is in a folded state.

2. The self-locking connecting rod structure according to claim 1, characterized in that: The other end of the first connecting rod (21) is hinged to the side of the seat rod (11) close to the leaning rod (12); the other end of the second connecting rod (22) is hinged to the side of the leaning rod (12) close to the seat rod (11). When the self-locking connecting rod structure is in a folded state, the first connecting rod (21) and the second connecting rod (22) also rotate around their hinge points to overlap with each other, thereby avoiding interference between the seat rod (11) and the leaning rod (12) during the rotation of the first connecting rod (21) and the second connecting rod (22).

3. The self-locking connecting rod structure according to claim 1, characterized in that: The limiting column (3) is arranged on the leaning rod (12); when the seat rod (11) and the leaning rod (12) rotate around their hinge points to a locking position, the second connecting rod (22) is limited by the limiting column (3).

4. The self-locking connecting rod structure according to claim 1, characterized in that: The limiting column (3) is arranged on the leaning rod (12); when the seat rod (11) and the leaning rod (12) rotate around their hinge points to a locking position, the first connecting rod (21) is limited by the limiting column (3).

5. A folding chair, characterized in that: include: Two self-locking connecting rod structures according to any one of claims 1 to 4 arranged in pairs; Two seat connecting beams (4), two ends of the two seat connecting beams (4) are respectively connected to the corresponding two ends of the two seat rods (11), and the two seat connecting beams (4) and the two seat rods (11) form a seat cushion frame; Two back-supporting connection beams (5), the two ends of the two back-supporting connection beams (5) being respectively connected to the corresponding two ends of the two back-supporting rods (12), and the two back-supporting connection beams (5) and the two back-supporting rods (12) forming a back-supporting frame; The two seat rods (11) and the backrest rod (12) are rotated around their hinge points to a locked position, at which time the two self-locking connecting rod structures are in a locked state, the seat cushion frame and the backrest frame intersect at a certain angle, and the folding chair is unfolded; then, the two self-locking connecting rod structures can be unlocked, and the two seat rods (11) and the backrest rod (12) can be rotated so that the two self-locking connecting rod structures are in a folded state, and the folding chair is folded.

6. The folding chair according to claim 5, characterized in that: The seat cushion frame is covered with flexible material to facilitate supporting the user.

7. The folding chair according to claim 5, characterized in that: The backrest frame is covered with a flexible material to facilitate supporting the user.

8. The folding chair according to claim 5, characterized in that: The seat cushion surrounding frame also includes a seat cushion arc-shaped transition rod (6), and the seat connecting beam (4) and the seat rod (11) are connected via the seat cushion arc-shaped transition rod (6).

9. The folding chair according to claim 5, characterized in that: The backrest enclosure frame also includes a backrest arc-shaped transition rod (7), and the backrest connection beam (5) and the backrest rod (12) are connected via the backrest arc-shaped transition rod (7).

10. The folding chair according to claim 5, characterized in that: The length of the seat rod (11) is shorter than that of the backrest rod (12), and the seat connecting beam (4) is also shorter than the backrest connecting beam (5). The seat cushion frame is integrally hinged to the inner side of the backrest frame. When the folding chair is folded, the seat cushion frame is stored in the backrest frame.

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