A folding chair

Abstract

The application discloses a folding chair and belongs to the technical field of daily necessities. The folding chair comprises a seat plate, a back plate, a front limb joint and a rear limb joint. The front end surface of the seat plate is provided with a connecting rod parallel to the seat plate, and the connecting rod is fixedly connected with the front end surface of the seat plate through a slope block group. The inner side surface of the connecting rod is a convex surface. The slope block group is composed of a plurality of parallel slope blocks. The front limb joint comprises two legs and a cross rod connecting the two legs. The top of the cross rod is provided with a hook block group. The hook block group is composed of a plurality of parallel hook blocks. The front surface of the hook block is provided with a recess inwardly folded at the middle height position. The bottom position of the back surface of the hook block is a bevel surface, and the bevel surface extends to the cross rod. The top of the cross rod and the bottom of the recess have a height difference greater than zero. The top of the parallel hook blocks is connected to form an integrated structure. The folding chair realizes a stable structure through the gravity borne by the chair itself and the supporting force between the parts at the contact position, and after being folded, the folding chair is in a flat state, occupies a small volume, and is convenient and stable to stack.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of daily necessities, in particular to a folding chair. BACKGROUND

[0002] The chair is a kind of daily life furniture, a kind of seat with backrest, also with armrest, modern chair pursues beautiful and fashionable, some chairs are no longer simply as a seat, under the combination of technology, make human life more convenient.

[0003] The existing folding chair is generally realized by hinged structure when using, the shape is irregular in the storage state, occupies large storage area, and wastes storage space. SUMMARY

[0004] Therefore, the present application provides a folding chair, which realizes stable structure by the gravity borne by the chair itself and the supporting force between the parts at the contact position in the unfolded state, and is in flat state after folding, so as to occupy small volume and be convenient and stable to stack.

[0005] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0006] A folding chair, comprising a seat plate and a back plate, further comprising a front limb joint and a rear limb joint, the front end surface of the seat plate is provided with a connecting rod parallel thereto, the height of the connecting rod is lower than the bottom surface of the seat plate, and the connecting rod is fixedly connected with the front end surface of the seat plate through a slope block group, the inner side surface of the connecting rod is a convex surface, and the slope block group is composed of a plurality of parallel slope blocks;

[0007] The front limb joint comprises two legs and a cross bar connecting the two legs, the top of the cross bar is provided with a hook block group, the hook block group is composed of a plurality of parallel hook blocks, the front surface of the hook block is provided with a recess inwardly folded at the middle height position, the back surface of the hook block is a bevel surface at the bottom position, the bevel surface extends to the cross bar, the top of the cross bar and the bottom of the recess have a height difference greater than zero, and the top of the parallel hook blocks is connected to form an integrated structure;

[0008] In the unfolded state, the connecting rod is located in the recess at the middle of the hook block group, the hook blocks and the slope blocks are arranged in parallel along the central axis of the connecting rod, the top of the hook block is coplanar with the top surface of the seat plate, the back surface of the hook block is tightly attached to the front end surface of the seat plate, and the legs are perpendicular to the seat plate;

[0009] In the folded state, the legs are tightly attached to the bottom surface of the seat plate, the back surface of the hook block is coplanar with the top surface of the bottom plate, the connecting rod is located in the recess at the middle of the hook block group, and the convex surface of the connecting rod faces the legs.

[0010] Further, the inclined block comprises a first horizontal section, an inclined section and a second horizontal section connected in sequence; the first horizontal section is connected with the front end surface of the seat plate and they are coplanar; the second horizontal section is connected with the connecting rod.

[0011] Further, the rear end surface of the seat plate is provided with a transverse plate connected with the rear end surface of the seat plate through the inclined block group; the inclined block group comprises a plurality of inclined blocks; the transverse plate and the connecting rod are located in the same plane which is parallel to the seat plate; the rear end portion of the lower surface of the seat plate is provided with a first inclined groove.

[0012] The rear leg joint comprises a fixed plate, a rear leg panel as a support and a plurality of parallel arc-shaped blocks; the fixed plate and the rear leg panel are located in the same plane and are connected through the arc-shaped blocks; the inner side top of the rear leg panel is provided with a fourth clamping groove; the middle position of the convex side of the arc-shaped block is provided with an abutting surface and the bottom is provided with a step structure; the step structure is connected with the rear leg panel.

[0013] The backrest plate comprises a backrest plate surface, comb blocks and comb teeth; the comb blocks and the comb teeth are both provided with a plurality of; the comb blocks are all connected at the bottom of the backrest plate surface and the comb teeth are connected at the bottom of the comb blocks; the residual width between the adjacent two comb blocks is the same as the residual width between the adjacent two comb teeth; the back surface bottom of the backrest plate surface is provided with a first clamping groove, the back surface bottom of the comb block is provided with a second clamping groove and the back surface top of the comb tooth is provided with a third clamping groove; the bottom of each comb tooth is connected on the same clamping rod;

[0014] In the folded state, the rear leg panel is located in the area surrounded by the two legs and the transverse rod of the front leg joint; the fixed plate is located in the first clamping groove; the arc-shaped block is located between the corresponding adjacent two comb blocks; the inclined block is located between the corresponding adjacent two comb teeth, the transverse plate is located in the area formed by the concave side of the arc-shaped block, the second clamping groove and the third clamping groove; the clamping rod, the step structure and the bottom part of the comb tooth are all located on the first inclined groove and the clamping rod is located in the area formed between the fourth clamping groove and the first inclined groove; the rear leg panel, the leg, the transverse plate, the fixed plate and the back surface of the backrest plate surface are located in the same plane;

[0015] In the unfolded state, the backrest plate surface and the rear leg panel are both perpendicular to the seat plate; the arc-shaped block is located between the corresponding adjacent two comb blocks, the fixed plate abuts in the second clamping groove; the clamping rod is located in the first inclined groove and the rear end portion of the seat plate presses on the top of the clamping rod; the inclined block is located between the corresponding adjacent two comb teeth.

[0016] Further, the inclined block comprises a third horizontal section and an inclined section; the third horizontal section is connected with the rear end surface of the seat plate and the end branch of the inclined section is connected with the transverse plate.

[0017] Further, the inclined block, the comb tooth and the arc-shaped block are arranged in sequence along the central axis direction of the transverse plate.

[0018] Further, the angle between the seat plate and the back plate surface is greater than 90 degrees in the unfolded state.

[0019] Further, the angle between the seat plate and the back plate surface is greater than 90 degrees in the unfolded state.

[0020] Further, the angle between the seat plate and the back plate surface is greater than 90 degrees in the unfolded state.

[0021] Further, the angle between the seat plate and the back plate surface is greater than 90 degrees in the unfolded state.

[0022] The beneficial effects generated by the technical scheme of the present application are as follows:

[0023] 1. The present application realizes unfolding and folding through mortise and tenon connection, which is different from the folding realized by the prior art through hinging, and the shape is more regular after folding, and the present application in multiple folding states is more stable and reliable in stacking.

[0024] 2. The present application realizes unfolding and storage only through the cooperation of slots, blocks and rods, and the processing technology is simple, and the parts are few; and after folding, it is in a flat state, occupies small volume, and is convenient and stable in stacking. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is an unfolded structure diagram of the embodiment of the present application.

[0026] Figure 2 It is a seat plate structure diagram of the embodiment of the present application.

[0027] Figure 3 It is a forelimb joint structure diagram of the embodiment of the present application.

[0028] Figure 4 It is a back plate structure diagram of the embodiment of the present application.

[0029] Figure 5 It is a hind limb joint structure diagram of the embodiment of the present application.

[0030] Figure 6 It is an unfolded structure diagram of the forelimb joint and the seat plate of the embodiment of the present application.

[0031] Figure 7 It is a folded structure diagram of the forelimb joint and the seat plate of the embodiment of the present application.

[0032] Figure 8 It is a folded structure diagram of the hind limb joint, the seat plate and the back plate of the embodiment of the present application.

[0033] Figure 9 Fig. 1 is a schematic view of the folding structure of the front limb joint, seat plate and rear limb joint of the embodiment of the present application.

[0034] Figure 10 Fig. 2 is an isometric view of the embodiment of the present application in the unfolded state.

[0035] Figure 11 Fig. 3 is a schematic view of the half-folded structure of the embodiment of the present application.

[0036] In the figure: 1, seat plate; 2, front limb joint; 3, back plate; 4, rear limb joint; 1-2, inclined block; 1-3, connecting rod; 1-4, inclined block; 1-5, horizontal plate; 1-6, first inclined slot; 2-1, hook block; 2-2, inclined surface; 2-3, horizontal rod; 2-4, support leg; 2-5, second inclined slot; 2-6, groove; 3-1, back plate surface; 3-2, comb block; 3-3, comb tooth; 3-4, clamping rod; 3-5, first clamping slot; 3-6, second clamping slot; 3-7, third clamping slot; 4-1, rear limb panel; 4-2, fourth clamping slot; 4-3, arc block; 4-4, arc block concave side; 4-5, fixed plate; 4-6, abutting surface; 4-7, step structure. DETAILED DESCRIPTION

[0037] The method described in the present application will be further described in detail below in combination with specific embodiments.

[0038] A folding chair comprises a seat plate and a back plate, and further comprises a front limb joint and a rear limb joint; the front end surface of the seat plate is provided with a connecting rod parallel thereto, the height of the connecting rod is lower than the bottom surface of the seat plate, and the connecting rod is fixedly connected with the front end surface of the seat plate through an inclined block group; the inner side surface of the connecting rod is a convex surface; the inclined block group is composed of a plurality of parallel inclined blocks;

[0039] The front limb joint comprises two support legs and a horizontal rod connecting the two support legs; the top of the horizontal rod is provided with a hook block group; the hook block group is composed of a plurality of parallel hook blocks; the front surface of the hook block is provided with a groove inwardly converging at the middle height position; the bottom position of the back surface of the hook block is an inclined surface, which extends to the horizontal rod; the top of the horizontal rod and the bottom of the groove have a height difference greater than zero; the tops of the parallel hook blocks are connected to form an integrated structure;

[0040] In the unfolded state, the connecting rod is located in the groove at the middle of the hook block group; the hook blocks and the inclined blocks are arranged in intervals along the central axis of the connecting rod; the top of the hook block is coplanar with the top surface of the seat plate; the back surface of the hook block is close to the front end surface of the seat plate; the support legs are perpendicular to the seat plate;

[0041] In the folded state, the support legs are close to the bottom surface of the seat plate, and the back surface of the hook block is coplanar with the top surface of the bottom plate; the connecting rod is located in the groove at the middle of the hook block group, and the convex surface of the connecting rod faces the support leg.

[0042] Further, the inclined block comprises a first horizontal section, an inclined section and a second horizontal section connected in sequence; the first horizontal section is connected with the front end surface of the seat plate and they are coplanar; the second horizontal section is connected with the connecting rod.

[0043] Further, the rear end surface of the seat plate is provided with a transverse plate connected with the rear end surface of the seat plate through the inclined block group; the inclined block group comprises a plurality of inclined blocks; the transverse plate and the connecting rod are located in the same plane which is parallel to the seat plate; the rear end portion of the lower surface of the seat plate is provided with a first inclined groove.

[0044] The rear leg joint comprises a fixed plate, a rear leg panel as a support and a plurality of parallel arc-shaped blocks; the fixed plate and the rear leg panel are located in the same plane and are connected through the arc-shaped blocks; the inner side top of the rear leg panel is provided with a fourth clamping groove; the middle position of the convex side of the arc-shaped block is provided with an abutting surface and the bottom is provided with a step structure; the step structure is connected with the rear leg panel.

[0045] The backrest plate comprises a backrest plate surface, comb blocks and comb teeth; the comb blocks and the comb teeth are both provided with a plurality of; the comb blocks are all connected at the bottom of the backrest plate surface and the comb teeth are connected at the bottom of the comb blocks; the residual width between the adjacent two comb blocks is the same as the residual width between the adjacent two comb teeth; the back bottom of the backrest plate surface is provided with a first clamping groove, the back bottom of the comb block is provided with a second clamping groove and the back top of the comb tooth is provided with a third clamping groove; the bottom of each comb tooth is connected on the same clamping rod.

[0046] In the folded state, the rear leg panel is located in the area surrounded by the two legs and the transverse rod of the front leg joint; the fixed plate is located in the first clamping groove; the arc-shaped block is located between the corresponding adjacent two comb blocks; the inclined block is located between the corresponding adjacent two comb teeth, the transverse plate is located in the area formed by the concave side of the arc-shaped block, the second clamping groove and the third clamping groove; the clamping rod, the step structure and the bottom part of the comb tooth are all located on the first inclined groove and the clamping rod is located in the area formed between the fourth clamping groove and the first inclined groove; the rear leg panel, the leg, the transverse plate, the fixed plate and the back surface of the backrest plate surface are located in the same plane.

[0047] In the unfolded state, the backrest plate surface and the rear leg panel are both perpendicular to the seat plate; the arc-shaped block is located between the corresponding adjacent two comb blocks, the fixed plate abuts in the second clamping groove; the clamping rod is located in the first inclined groove and the rear end portion of the seat plate presses on the top of the clamping rod; the inclined block is located between the corresponding adjacent two comb teeth.

[0048] Further, the inclined block comprises a third horizontal section and an inclined section; the third horizontal section is connected with the rear end surface of the seat plate and the end branch of the inclined section is connected with the transverse plate.

[0049] Further, the inclined block, the comb tooth and the arc-shaped block are arranged in sequence along the central axis direction of the transverse plate.

[0050] Further, the angle between the seat plate and the back plate surface is greater than 90° in the unfolded state.

[0051] Further, the angle between the fixed plate and the back plate surface is greater than 0° in the unfolded state.

[0052] Further, the back end surface of the seat plate is tightly attached to the abutting surface of the arc-shaped block in the unfolded state, and the lower edge of the concave side of the arc-shaped block is attached to the inner side of the horizontal plate.

[0053] Further, the end of the leg is provided with a second inclined groove, and the end of the clamping plate is located between the first inclined groove and the second inclined groove in the folded state.

[0054] The following is a more specific embodiment:

[0055] Referring to Figure 1 , the embodiment includes a seat plate, a back plate, a front limb joint, and a rear limb joint.

[0056] Referring to Figures 2 to 5 , the seat plate in the embodiment has the following specific structure: the front end surface of the seat plate is provided with a connecting rod parallel thereto, the height of the connecting rod is lower than the bottom surface of the seat plate, and the connecting rod is fixedly connected to the front end surface of the seat plate through a set of inclined blocks; the inner side surface of the connecting rod is a convex surface; and the set of inclined blocks is composed of a plurality of parallel inclined blocks.

[0057] The specific structure of the front limb joint is as follows: the front limb joint includes two legs and a horizontal rod connecting the two legs; the top of the horizontal rod is provided with a set of hook blocks; the set of hook blocks is composed of a plurality of parallel hook blocks; the front surface of the middle height position of each hook block is provided with a recess inwardly folded; the bottom position of the back surface of each hook block is a bevel surface extending to the horizontal rod; the top of the horizontal rod and the bottom of the recess have a height difference greater than zero; and the top of the parallel hook blocks is connected to form an integrated structure.

[0058] The specific structure of the back plate is as follows: the back plate includes a back plate surface, a comb block, and a comb tooth; a plurality of comb blocks and comb teeth are provided; the comb blocks are connected to the bottom of the back plate surface, and the comb teeth are connected to the bottom of the comb blocks; the remaining width between the adjacent two comb blocks is the same as the remaining width between the adjacent two comb teeth; the bottom of the back surface of the back plate surface is provided with a first clamping groove, the bottom of the back surface of the comb block is provided with a second clamping groove, and the top of the back surface of the comb tooth is provided with a third clamping groove; and the bottom of each comb tooth is connected to the same clamping rod.

[0059] The specific structure of the rear limb joint is as follows: the rear limb joint includes a fixed plate, a rear limb panel as a support, and a plurality of parallel arc-shaped blocks; the fixed plate and the rear limb panel are located in the same plane, and the fixed plate and the rear limb panel are connected through the arc-shaped blocks; the top of the inner side surface of the rear limb panel is provided with a fourth clamping groove; the middle position of the convex side of the arc-shaped block is provided with an abutting surface, and the bottom is provided with a step structure; and the step structure is connected to the rear limb panel.

[0060] With reference to Figure 6 , the unfolded structure of the front limb joint and the seat plate is as follows: the connecting rod is located in the groove in the middle of the hook block group; the hook blocks and the inclined blocks are arranged in intervals along the central axis of the connecting rod; the top of the hook block is coplanar with the top surface of the seat plate; the back of the hook block is tightly attached to the front end surface of the seat plate; and the supporting legs are perpendicular to the seat plate.

[0061] With reference to Figure 7 , the folded structure of the front limb joint and the seat plate is as follows: the supporting legs are tightly attached to the bottom surface of the seat plate, and the back of the hook block is coplanar with the top surface of the bottom plate; the connecting rod is located in the groove in the middle of the hook block group, and the convex surface of the connecting rod faces the extension direction of the supporting legs.

[0062] With reference to Figure 8 and Figure 9 , the folded structure of the rear limb joint, the seat plate and the backrest is as follows: the rear limb panel is located in the area surrounded by the two supporting legs and the horizontal rod of the front limb joint; the fixing plate is located in the first clamping groove; the arc-shaped block is located between the corresponding adjacent two comb blocks; the inclined block is located between the corresponding adjacent two comb teeth; the horizontal plate is located in the area formed by the concave side of the arc-shaped block, the second clamping groove and the third clamping groove; the clamping rod, the stepped structure and the bottom part of the comb teeth are all located on the first inclined groove, and the clamping rod is located in the area formed between the fourth clamping groove and the first inclined groove; the rear limb panel, the supporting legs, the horizontal plate, the fixing plate and the back of the backrest are located in the same plane.

[0063] With reference to Figure 10 , the unfolded schematic diagram of the present application is as follows: the connecting rod is located in the groove in the middle of the hook block group; the hook blocks and the inclined blocks are arranged in intervals along the central axis of the connecting rod; the top of the hook block is coplanar with the top surface of the seat plate; the back of the hook block is tightly attached to the front end surface of the seat plate; and the supporting legs are perpendicular to the seat plate.

[0064] In the unfolded state, the backrest and the rear limb panel are both perpendicular to the seat plate; the arc-shaped block is located between the corresponding adjacent two comb blocks, and the fixing plate is located in the second clamping groove; the clamping rod is located in the first inclined groove, and the rear end of the seat plate is pressed on the top of the clamping rod; and the inclined block is located between the corresponding adjacent two comb teeth.

[0065] In the present embodiment, the inclined block comprises a first horizontal segment, an inclined segment and a second horizontal segment connected in sequence; the first horizontal segment is connected with the front end surface of the seat plate and they are coplanar; and the second horizontal segment is connected with the connecting rod. The inclined block comprises a third horizontal segment and an inclined segment; the third horizontal segment is connected with the rear end surface of the seat plate, and the end branch of the inclined segment is connected with the horizontal plate.

[0066] The inclined block, the comb tooth and the arc block are arranged in sequence along the direction of the middle axis of the cross plate. In the unfolded state, the included angle between the seat plate and the back plate surface is greater than 90°. In the unfolded state, the fixed plate and the back plate surface have an included angle greater than 0°. In the unfolded state, the abutting surface of the arc block is close to the rear end surface of the seat plate; the concave side of the arc block is abutted on the inner side of the cross plate. The end of the supporting leg is provided with a second inclined groove; in the folded state, the end of the clamping plate is located between the first inclined groove and the second inclined groove.

[0067] With reference to Figure 11 In the unfolded state to the folded state of the embodiment, the folding of the front limb joint, the folding of the rear limb joint and the folding of the back plate are included.

[0068] The folding of the front limb joint: the front limb joint is rotated backward around the connecting rod, so that the supporting leg of the front limb joint is attached to the lower surface of the seat plate.

[0069] The folding of the rear limb joint: the rear limb panel is rotated forward and separated from the back plate, and the rear limb panel is continuously rotated forward, so that the rear limb panel of the rear limb joint is attached to the lower surface of the seat plate.

[0070] The folding of the back plate: after the rear limb panel is slightly rotated forward to separate the back plate from the rear limb, the back plate is rotated backward, and then is moved backward to a suitable position to avoid interference between the back plate and the seat plate, and then is rotated backward in cooperation with the action of the rear limb joint, so that the back plate and the seat plate are located on the same surface, and the folded state is reached.

Claims

1. A folding chair comprising a seat plate and a back plate, characterized in that: The seat plate further comprises a forelimb joint and a hindlimb joint; the front end surface of the seat plate is provided with a connecting rod parallel thereto, the height of the connecting rod being lower than the bottom surface of the seat plate, and the connecting rod is fixedly connected to the front end surface of the seat plate via an inclined block group; the inner side surface of the connecting rod is a convex surface; the inclined block group is composed of a plurality of parallel inclined blocks; The forelimb joint includes two legs and a crossbar connecting the two legs; a hook block group is provided on the top of the crossbar; the hook block group is composed of a plurality of parallel hook blocks; a groove that converges inwards is provided at the middle height position of the front of each hook block; a beveled surface is provided at the bottom position of the back of each hook block, and the beveled surface extends to the crossbar; the height difference between the top of the crossbar and the bottom of the groove is greater than zero; the tops of the parallel hook blocks are connected to form an integrated structure; In the unfolded state, the connecting rod is located in the groove in the middle of the hook block group; along the central axis of the connecting rod, the hook blocks and the oblique blocks are arranged at intervals; the top of the hook block is coplanar with the top surface of the seat plate; the back of the hook block is in close contact with the front surface of the seat plate; the legs are perpendicular to the seat plate; In the folded state, the legs are tightly attached to the bottom surface of the seat plate, and the back surface of the hook block is coplanar with the top surface of the bottom plate; the connecting rod is located in the groove in the middle of the hook block group, and the convex surface of the connecting rod faces the legs; The rear end surface of the seat plate is provided with a transverse plate, which is connected to the rear end surface of the seat plate through a tilting block group; the tilting block group is composed of a plurality of tilting blocks; the transverse plate and the connecting rod are located in the same plane, and the plane is parallel to the seat plate; the rear end portion of the lower surface of the seat plate is provided with a first inclined groove; The hind limb joint includes a fixing plate, a hind limb panel as a support, and a plurality of parallel arc-shaped blocks; the fixing plate and the hind limb panel are located in the same plane, and the fixing plate and the hind limb panel are connected by the arc-shaped blocks; a third slot is provided on the top of the inner side of the hind limb panel; an abutment surface is provided at the middle position of the convex side of the arc-shaped block, and a step structure is provided at the bottom; the step structure is connected to the hind limb panel; The back plate includes a back plate surface, a comb block and comb teeth; the comb blocks and comb teeth are each provided in plurality; the comb blocks are connected to the bottom of the back plate surface, and the comb teeth are connected to the bottom of the comb block; the margin width between two adjacent comb blocks is the same as the margin width between two adjacent comb teeth; a first card slot is provided at the bottom back of the back plate surface, a second card slot is provided at the bottom back of the comb block, and a third card slot is provided at the top back of the comb teeth, and the bottom of each comb tooth is connected to the same card rod; In the folded state, the hind limb panel is located in the area surrounded by the two legs and the cross bar of the forelimb joint; the fixed plate is located in the first slot; the arc block is located between the two corresponding adjacent comb blocks; the tilting block is located between the two corresponding adjacent comb teeth, and the cross plate is located in the area formed by the concave side of the arc block, the second slot and the third slot; the clamping rod, the step structure and the bottom part of the comb teeth are all located on the first inclined slot, and the clamping rod is located in the area formed between the fourth slot and the first inclined slot; the hind limb panel, the legs, the cross plate, the fixed plate and the back of the backrest are located in the same plane; In the unfolded state, the backrest surface and the rear limb panel are perpendicular to the seat plate; the arc block is located between the two corresponding adjacent comb blocks, and the fixed plate is against the second card slot; the card rod is located in the first inclined slot, and the rear end of the seat plate is pressed on the top of the card rod; the tilting block is located between the two corresponding adjacent comb teeth.

2. A folding chair according to claim 1, characterized in that: The inclined block includes a first horizontal section, an inclined section, and a second horizontal section connected in sequence; the first horizontal section is connected to the front end surface of the seat plate and the two are coplanar; the second horizontal section is connected to the connecting rod.

3. A folding chair according to claim 1, characterized in that: The tilting block includes a third horizontal section and an inclined section; the third horizontal section is connected to the rear end surface of the seat plate, and the terminal branch of the inclined section is connected to the transverse plate.

4. A folding chair according to claim 1, characterized in that: Along the central axis of the transverse plate, the tilting blocks, comb teeth and arc blocks are arranged in sequence.

5. The folding chair according to claim 1, characterized in that: In the unfolded state, the angle between the seat plate and the backrest surface is greater than 90°.

6. The folding chair according to claim 1, characterized in that: In the unfolded state, the fixing plate and the support plate surface have an included angle greater than 0°.

7. The folding chair according to claim 1, characterized in that: In the unfolded state, the abutting surface of the arc-shaped block is in close contact with the rear end surface of the seat plate; the lower edge of the concave side of the arc-shaped block abuts against the inner side of the transverse plate.

8. The folding chair according to claim 1, characterized in that: The end of the supporting leg is provided with a second inclined groove; in the folded state, the end of the clamping plate is located between the first inclined groove and the second inclined groove.

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