Armchair capable of being stacked and stored

Abstract

The utility model discloses an armchair capable of being stacked and stored, which comprises a chair frame, a chair back and a chair seat, folding armrests are arranged on two sides of the chair frame, and a chair seat supporting plate is arranged on the inner side of the chair frame; the chair back is rotationally connected with the chair frame; the chair seat is rotationally connected with one side of the chair seat supporting plate; a chair back overturning assembly is arranged at the joint of the chair back and the chair frame, and when the folding armrests are overturned, a plurality of armchairs can be vertically stacked up and down; and when the chair seat is overturned, the plurality of armchairs can be horizontally stacked front and back. Compared with the prior art, the armchair has the advantages that the armchair, the chair back and the chair seat are all independently connected to the chair frame, so that when a user leans on the chair back, the back of the user can be buffered, released and rebounded, the leaning comfort is improved, and meanwhile, when the armchair is stacked front and back, the back of the user can be effectively prevented from falling off. And the turnover chair seat is only required to be lifted upwards, so that the operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of armchairs, in particular to an armchair that can be stacked and stored. Background Art

[0002] An armchair is a chair with armrests on both sides. An armchair is a chair with armrests on both sides. An armchair provides support that is more ergonomically compatible with chairs with armrests. Functionally, an armchair provides support that is more ergonomically compatible with chairs with armrests. Chinese patent CN218551830U discloses a stackable armchair comprising: a seat and a backrest connected to the seat; a support frame rotatably connected to the seat; and a seat flip control device comprising a rotation mechanism connected between the support frame and the seat, and at least one stop mechanism disposed within the seat and located on the side of the rotation mechanism. The stackable armchair disclosed in this utility model can be stacked front to back and / or up and down by flipping the seat forward and / or folding the armrests. After stacking, the armchair is compact and has low packaging costs, making it convenient for storage and transportation, and easy to store to save space.

[0003] The above-mentioned prior art has the following deficiencies: The seat and backrest are fixedly connected to form an integral structure. Therefore, when a user sits on the seat and leans against the backrest, the backrest does not receive any cushioning rebound, making the backrest feel stiff and uncomfortable when leaning. Furthermore, when stacking armchairs, a handle switch must be pressed to unlock the seat, making it inconvenient to use. Furthermore, the armrests require a switch to fold, which can pinch the user's fingers if not operated correctly. Therefore, a stackable armchair is provided to address the above-mentioned issues. Utility Model Content

[0004] In order to solve the problems in the above background technology, the technical solution adopted by the present invention is as follows: a stackable armchair, comprising: a chair frame, foldable armrests are provided on both sides of the chair frame, and a seat support plate is provided on the inner side of the chair frame;

[0005] a chair back, the chair back being rotatably connected to the chair frame;

[0006] A seat, the seat being rotatably connected to one side of the seat support plate;

[0007] A chair back flip assembly is provided at the connection between the chair back and the chair frame. When the chair seat is flipped, a plurality of armchairs can be stacked horizontally front to back.

[0008] As an optimal technical solution of the present invention, the chair frame includes a rear support leg, a front support leg, and an alloy sleeve. The alloy sleeve is sleeved at the connection between the rear support leg and the front support leg. The chair back flip assembly is arranged inside the front support leg close to one end of the alloy sleeve. The chair back flip assembly includes a metal plate, a bearing rod, a fixing seat, and a spring. The bearing rod is fixedly connected to the end of the metal plate facing the chair back. The fixing seat is arranged on the side of the metal plate facing the seat support plate. The spring is arranged between the front support leg and the connection between the chair back.

[0009] As a preferred technical solution of the present invention, the chair back comprises a closed chair back or a breathable chair back, and the chair seat comprises a closed chair seat or a breathable chair seat.

[0010] As a preferred technical solution of the present invention, a sponge cushion is provided on the front of the closed chair back, a sponge cushion is provided on the front of the closed chair seat, and an axial hole is provided on one end of the closed chair back or the breathable chair back facing the bearing rod, and the closed chair back or the breathable chair back is movably connected to the bearing rod through the axial hole.

[0011] As an optimal technical solution of the present invention, the middle part of the breathable chair back is a hollow structure, and a mesh backrest is provided on the front side thereof; the middle part of the breathable chair seat is a hollow structure, and a mesh seat is provided on the front side thereof; the closed chair seat and the breathable chair seat are both provided with a seat rotating seat on the bottom side of the tail.

[0012] As an optimal technical solution of the present invention, the metal plate is pre-embedded in the front support leg and located inside one end of the alloy sleeve. The front support leg is fixedly connected to the seat support plate through a fixed seat. The seat support plate is provided with a rotating connection seat at one end close to the chair back. The rotating connection seat corresponds to the seat rotating seat, and the rotating connection seat is connected to the seat rotating seat through an axis.

[0013] As a preferred technical solution of the present invention, the bottom end of the front support leg coincides with the connection of the seat support plate, the seat support plate is fixedly connected to the fixed seat by screws, and the rear support leg is located above the seat and is provided with an armrest.

[0014] As an optimal technical solution of the present invention, the metal plate is screwed through the alloy sleeve and fixedly connected to the embedded nut on the rear support leg. The upper end of the front support leg and the chair back are staggered and engaged with each other at the connection point, and the chair back rotates with the bearing rod as the center of rotation.

[0015] As a preferred technical solution of the present invention, the armrest is a foldable anti-pinch hand type or a fixed type.

[0016] As an optimal technical solution of the present invention, the foldable anti-pinch armrest and the chair frame are in a foldable flip structure, and an elastically connected anti-pinch locking part is provided at the front end under the armrest. The armrest is flipped and folded backward by pressing the front anti-pinch locking part, completing the backward folding of the armrest. The armrest includes a rotating base, an anti-pinch locking part, an armrest seat, and an armrest cover. The rotating base is connected to the inside of the armrest seat through an axis, and the top of the armrest seat is buckled with the armrest cover. The anti-pinch locking part is provided at the front end of the bottom of the armrest seat and is a rotating elastic button structure. A first limit opening is provided on the upper end of the rotating base facing the anti-pinch locking part, and the first limit opening is engaged with the anti-pinch locking part. A second limit opening is provided on the side of the rotating base opposite to the first limit opening.

[0017] As an optimal technical solution of the present utility model, the rotating base is engaged with the bottom of the armrest seat through the second limit opening, and the bottom end of the rotating base is fixedly provided with a connecting seat, the connecting seat is inserted into the top end of the rear support leg, and the connecting seat is pin-connected to the rear support leg, and the armrest seat is provided with a spring seat inside one end of the anti-pinch locking piece, and the armrest seat is provided with a limiting groove on one side of the spring seat, and the armrest seat is provided with an axis groove on one side of the limiting groove, a spring body is provided between one end of the anti-pinch locking piece and the spring seat, and the upper end of the anti-pinch locking piece is provided with a shaft rod on one side of the shaft groove, and the shaft rod and the spring body are respectively located at two ends of the anti-pinch locking piece, and the anti-pinch locking piece rotates with the shaft rod as the center of rotation, and the shaft rod is rotatably connected to the inside of the shaft groove.

[0018] The present invention has the following advantages: the armchair in the present invention has a backrest and a seat that are independently connected to the chair frame, so that when the user leans on the backrest, the user's back can be cushioned, released, and rebounded, thereby improving the comfort of leaning; when the use space is limited, the armchairs can be stacked front to back only by flipping up the flip seat, which is easy to operate; when the chair is equipped with a foldable anti-pinch armrest, the user can also fold the armrest and stack it vertically to further save space and facilitate transportation, and also avoid pinching the user's fingers due to improper operation.

[0019] The backrest and the seat adopt closed type or breathable type respectively, and the seat adopts closed type or breathable type respectively, thereby dividing the armchair into two different types. The breathable backrest and the breathable seat are convenient for use in summer and have good ventilation and heat dissipation effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the armchair according to the first embodiment of the present invention.

[0021] Figure 2 This is a structural schematic diagram of the armchair according to the first embodiment of the present invention from another perspective.

[0022] Figure 3 It is a schematic diagram of the connection structure between the chair frame and the chair back in the first embodiment of the present invention.

[0023] Figure 4 It is a schematic diagram of the partial structure of the connection between the chair frame and the chair back in the first embodiment of the present invention.

[0024] Figure 5 It is a schematic diagram of the partial structure of the chair frame of the first embodiment of the present invention.

[0025] Figure 6 This is a schematic diagram of the closed chair back structure of Example 1 of the present utility model.

[0026] Figure 7 This is a schematic diagram of the breathable chair back structure of Example 1 of the present utility model.

[0027] Figure 8 It is a schematic diagram of the metal plate structure of the first embodiment of the present utility model.

[0028] Figure 9 This is a schematic diagram of the structure of a breathable chair seat according to the first embodiment of the present invention.

[0029] Figure 10 This is a schematic diagram of the closed chair seat structure of Example 1 of the present utility model.

[0030] Figure 11 This is the first embodiment of the present invention Figure 4 Enlarged schematic diagram of structure A.

[0031] Figure 12 This is a schematic diagram of the front and back horizontal stacking of armchairs according to the first embodiment of the present invention.

[0032] Figure 13 It is a schematic diagram of the overall structure of the second embodiment of the present utility model.

[0033] Figure 14 This is a schematic diagram of the armrest structure of the second embodiment of the present utility model.

[0034] Figure 15 This is a schematic diagram of the partially disassembled structure of the armrest in the second embodiment of the present utility model.

[0035] Figure 16 It is a schematic diagram of the armrest cover removal structure of the second embodiment of the present utility model.

[0036] Figure 17 This is a schematic diagram of the internal structure of the armrest seat in Example 2 of the present utility model.

[0037] Figure 18 This is a front view of the internal structure of the armrest in Example 2 of the present utility model.

[0038] Figure 19 This is a schematic diagram of the vertical stacking of armchairs in the second embodiment of the present invention.

[0039] Explanation of the accompanying symbols: 1. Rear support leg; 2. Front support leg; 3. Alloy sleeve; 4. Metal plate; 5. Bearing rod; 6. Fixed seat; 7. Spring; 8. Seat support plate; 9. Closed chair back; 901. Sponge cushion; 10. Closed seat; 1001. Seat swivel seat; 1002. Sponge cushion; 11. Rotating connecting seat; 12. Axis hole; 13. Breathable seat; 1301. Mesh seat; 14. Breathable Chair back; 1401, mesh back; 15, armrest; 153, connecting seat; 154, rotating base; 155, first limiting opening; 156, second limiting opening; 157, armrest seat; 158, armrest cover; 159, anti-pinch locking piece; 1510, spring body; 1511, spring seat; 1512, limiting groove; 1513, shaft groove; 1514, limiting rod; 1515, shaft rod; 1516, threaded hole. DETAILED DESCRIPTION

[0040] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center," "up," "down," "left," "right," "vertical," "horizontal," "inside," "outside," and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be construed as limiting the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0042] The present invention will be further described below with reference to the accompanying drawings.

[0043] Example 1

[0044] Please refer to Figures 1-12 The utility model provides a stackable armchair, comprising: a chair frame, foldable armrests 15 are provided on both sides of the chair frame, and a seat support plate 8 is provided on the inner side of the chair frame;

[0045] The backrest is rotatably connected to the chair frame, and the backrest can meet the tilt angle of 9 degrees;

[0046] The seat is rotatably connected to one side of the seat support plate 8;

[0047] A chair back flip assembly is provided at the connection between the chair back and the chair frame. When the foldable anti-pinch armrest 15 is flipped, several armchairs can be stacked vertically up and down; when the seat is flipped, several armchairs can be stacked horizontally front to back.

[0048] Combine Figure 3 and Figure 5 As shown, the chair frame includes a rear support leg 1, a front support leg 2, and an alloy sleeve 3. The alloy sleeve 3 is sleeved at the connection between the rear support leg 1 and the front support leg 2. The chair back flip assembly is arranged inside the front support leg 2 near one end of the alloy sleeve 3. The alloy sleeve 3 can effectively increase the structural strength of the connection between the rear support leg 1 and the front support leg 2. The chair back flip assembly includes a metal plate 4, a bearing rod 5, a fixing seat 6, and a spring 7. The bearing rod 5 is fixedly connected to the end of the metal plate 4 facing the chair back. The fixing seat 6 is arranged on the side of the metal plate 4 facing the seat support plate 8. The spring 7 is arranged between the front support leg 2 and the chair back. The metal plate 4 is pre-embedded in the front support leg 2 at one end of the alloy sleeve 3 Internally, the metal plate 4 is used as a support member to effectively ensure the strength of the armchair assembly structure. The front support leg 2 is fixedly connected to the seat support plate 8 through the fixed seat 6. The seat support plate 8 is provided with a rotating connection seat 11 near one end of the chair back. The rotating connection seat 11 corresponds to the seat rotation seat 1001, and the rotating connection seat 11 is connected to the seat rotation seat 1001 through an axis. The bottom end of the front support leg 2 coincides with the connection between the seat support plate 8, and the seat support plate 8 is fixedly connected to the fixed seat 6 by screws. The rear support leg 1 is located above the seat and is provided with an armrest 15. The metal plate 4 passes through the alloy sleeve 3 by screws and is fixedly connected to the embedded nut on the rear support leg 1, combined with Figure 11 As shown, the front support leg 2 is staggered and engaged with the upper end of the seat back connection, thereby limiting the maximum counterclockwise rotation angle of the seat back, and the seat back rotates around the bearing rod 5 as the center of the circle.

[0049] Combine Figures 6-10As shown, the chair back includes a closed chair back 9 or a breathable chair back 14, and the chair seat includes a closed chair seat 10 or a breathable chair seat 13. A sponge cushion 901 is provided on the front of the closed chair back 9, and a sponge cushion 1002 is provided on the front of the closed chair seat 10. The closed chair back 9 or the breathable chair back 14 is provided with an axial hole 12 at one end facing the bearing rod 5. The closed chair back 9 or the breathable chair back 14 is movably connected to the bearing rod 5 through the axial hole 12. The middle part of the breathable chair back 14 is a hollow structure, and a mesh back 1401 is provided on one side of the front. The middle part of the breathable chair seat 13 is a hollow structure, and a mesh seat 1301 is provided on one side of the front. A seat swivel seat 1001 is provided on the bottom side of the tail of the closed chair seat 10 and the breathable chair seat 13, thereby making the armchair divided into two different types. The breathable chair back 14 and the breathable chair seat 13 are convenient for use in summer and have good ventilation and heat dissipation effects.

[0050] Specifically, in this embodiment, when the armchairs need to be stacked front to back, the front end of the seat can be manually lifted up, and the seat can be turned clockwise with the connecting axis of the seat rotating seat 1001 and the rotating connecting seat 11 as the center until it is perpendicular to the ground. After the seat is turned upright, the armchairs can be stacked front to back for storage. When the armchair is in use, it is only necessary to turn the seat in the opposite direction so that the bottom of the seat is supported on the seat support plate 8. When the user sits on the seat and leans back on the chair back, the chair back is supported by the support plate 8. After the back is squeezed and pushed, the chair back will rotate clockwise by a certain angle with the connection between the shaft hole 12 and the bearing rod 5 as the center of the circle. When the chair back rotates, it will squeeze the spring 7. At the same time, the elastic force of the spring 7 can push the chair back to one end of the shaft hole 12 (lever principle, with the bearing rod 5 as the fulcrum), and then the chair back can be rotated counterclockwise and rebounded. This method can effectively avoid the user from feeling stiff when leaning directly on the traditional chair back. By rotatable chair back and using spring 7 as a rebound, the comfort of the user leaning on the chair back can be effectively increased.

[0051] Example 2

[0052] The main difference between this embodiment and the first embodiment is that the armrest 15 can be a foldable anti-pinch hand type or a fixed type, such as Figures 13 to 19As shown, the foldable anti-pinch armrest and the chair frame are in a foldable flip structure, and an elastically connected anti-pinch locking piece 159 is provided at the front end of the lower side of the armrest. Pressing the front anti-pinch locking piece 159 will cause the armrest to flip and fold backward, completing the backward folding of the armrest. The armrest includes a rotating base 154, an anti-pinch locking piece 159, an armrest seat 157, and an armrest cover 158. The rotating base 154 is connected to the inside of the armrest seat 157 through an axis, and the top of the armrest seat 157 is buckled with the armrest cover 158. The anti-pinch locking piece 159 is provided at the front end of the bottom of the armrest seat 157 and is in a rotating elastic button structure. A first limiting opening 155 is provided on the upper end of the rotating base 154 facing the anti-pinch locking piece 159, and the first limiting opening 155 is engaged with the anti-pinch locking piece 159. A second limiting opening 156 is provided on the side of the rotating base 154 opposite to the first limiting opening 155.

[0053] Combine Figure 15 and Figure 18 As shown, the rotating base 154 is engaged with the bottom of the armrest seat 157 through the second limit opening 156, so that the maximum rotation angle of the armrest seat 157 can be limited when the armrest seat 157 is unfolded for use, thereby ensuring that the armrest seat 157 will not rotate or shake after unfolding. A connecting seat 153 is fixedly provided at the bottom end of the rotating base 154, and the connecting seat 153 is inserted into the top end of the rear support leg 1. The connecting seat 153 is pin-connected to the rear support leg 1, and further, a threaded hole 1516 is provided at one end of the connecting seat 153 inside the rear support leg 1, and a screw is threadedly connected inside the threaded hole 1516, so as to facilitate assembly or disassembly between the armrest and the rear support leg 1, and a spring seat 1511 is provided inside one end of the anti-pinch locking member 159 of the armrest seat 157.

[0054] Combine Figure 16 and Figure 17 As shown, the armrest seat 157 is provided with a limiting groove 1512 on one side of the spring seat 1511, and the armrest seat 157 is provided with an axis groove 1513 on one side of the limiting groove 1512. A spring body 1510 is provided between one end of the anti-pinch locking piece 159 and the spring seat 1511, and a limiting rod 1514 is provided on the upper end of the anti-pinch locking piece 159 on one side of the limiting groove 1512. A axis rod 1515 is provided on the upper end of the anti-pinch locking piece 159 on one side of the axis groove 1513. The limiting groove 1512 cooperates with the limiting rod 1514 to limit the maximum rotation angle of the anti-pinch locking piece 159.

[0055] Among them, the shaft 1515 and the spring body 1510 are respectively located at the two ends of the anti-pinch locking part 159. The anti-pinch locking part 159 rotates with the shaft 1515 as the center of rotation. The shaft 1515 is rotatably connected to the inside of the shaft groove 1513. A seat is provided on one side of the upper end of the chair frame, and a chair backrest is provided at the tail end of the seat at the upper end of the chair frame. Rollers are provided at the bottom ends of the front support leg 2 and the rear support leg 1.

[0056] Specifically, when the foldable armrest needs to be flipped over in this embodiment, the palm of the hand is placed on the front upper part of the armrest cover 158, and the anti-pinch locking member 159 below the armrest seat 157 is pressed upward and backward by the finger, and then the anti-pinch locking member 159 is rotated clockwise in the shaft groove 1513 by a certain arc with the shaft rod 1515 as the center, so that the anti-pinch locking member 159 is away from the first limit opening 155 on the rotating base 154, and then the armrest seat 157 can be manually flipped over so that the armrest seat 157 is aligned with the rotating base. The seat 154 is folded backward clockwise at the center of the circle at the connection axis, which can effectively prevent the hand from being pinched when the armrest is flipped. On the contrary, when the armrest needs to be used and needs to be unfolded, the armrest seat 157 can be directly pulled clockwise, and then when the armrest seat 157 and the anti-pinch locking piece 159 are rotated to the first limit opening 155, the anti-pinch locking piece 159 can be pushed to engage at the first limit opening 155 under the elastic force of the spring body 1510, thereby completing the limit locking of the armrest seat 157.

[0057] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

[0058] Other parts of the present invention that are not described in detail belong to the prior art and will not be described in detail here.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A stackable armchair, characterized in that: include: A chair frame, wherein armrests (15) are provided on both sides of the chair frame, and a seat support plate (8) is provided on the inner side of the chair frame; a chair back, the chair back being rotatably connected to the chair frame; A seat, the seat being rotatably connected to one side of the seat support plate (8); A chair back flip assembly is provided at the connection between the chair back and the chair frame. When the chair seat is flipped, a plurality of armchairs can be stacked horizontally front to back.

2. The stackable armchair according to claim 1, wherein: The chair frame comprises a rear support leg (1), a front support leg (2), and an alloy sleeve (3); the alloy sleeve (3) is sleeved on the connection between the rear support leg (1) and the front support leg (2); the chair back flip assembly is arranged inside one end of the front support leg (2) close to the alloy sleeve (3); the chair back flip assembly comprises a metal plate (4), a bearing rod (5), a fixing seat (6), and a spring (7); the bearing rod (5) is fixedly connected to the end of the metal plate (4) facing the chair back; the fixing seat (6) is arranged on the side of the metal plate (4) facing the chair seat support plate (8); and the spring (7) is arranged between the connection between the front support leg (2) and the chair back.

3. The stackable armchair according to claim 1, wherein: The chair back comprises a closed chair back (9) or a breathable chair back (14), and the chair seat comprises a closed chair seat (10) or a breathable chair seat (13).

4. The stackable armchair according to claim 3, wherein: The closed chair back (9) or the breathable chair back (14) is provided with an axial hole (12) at one end facing the bearing rod (5), and the closed chair back (9) or the breathable chair back (14) is movably connected to the bearing rod (5) through the axial hole (12).

5. The stackable armchair according to claim 3, wherein: The middle part of the breathable chair back (14) is a hollow structure, and a mesh backrest (1401) is provided on the front side thereof; the middle part of the breathable chair seat (13) is a hollow structure, and a mesh seat (1301) is provided on the front side thereof; and the bottom side of the tail of the closed chair seat (10) and the breathable chair seat (13) are both provided with a chair seat rotating seat (1001).

6. The stackable armchair according to claim 2, wherein: The metal plate (4) is embedded in the front support leg (2) and is located inside one end of the alloy sleeve (3); the front support leg (2) is fixedly connected to the seat support plate (8) through a fixed seat (6); the seat support plate (8) is provided with a rotating connection seat (11) near one end of the chair back; the rotating connection seat (11) corresponds to the seat rotating seat (1001), and the rotating connection seat (11) is connected to the seat rotating seat (1001) through an axis.

7. The stackable armchair according to claim 2, wherein: The bottom end of the front support leg (2) coincides with the connection of the seat support plate (8), and the seat support plate (8) is fixedly connected to the fixing seat (6) by screws. The rear support leg (1) is located above the seat and is provided with an armrest (15).

8. The stackable armchair according to claim 2, wherein: The metal plate (4) is screwed through the alloy sleeve (3) and fixedly connected to the embedded nut on the rear support leg (1); the front support leg (2) is staggered and engaged with the upper end of the seat back at the connection point; the seat back rotates with the bearing rod (5) as the center of the circle.

9. The stackable armchair according to any one of claims 1 to 8, characterized in that: The handrail (15) is a foldable hand-pinch-proof type or a fixed type.

10. The stackable armchair according to claim 9, wherein: The foldable anti-pinch armrest (15) and the chair frame are in a foldable flip structure, and an elastically connected anti-pinch locking piece (159) is provided at the front end below the armrest (15). When the front anti-pinch locking piece (159) is pressed, the armrest flips and folds backward, completing the backward folding of the armrest.

11. The stackable armchair according to claim 9, wherein: The foldable anti-pinch hand armrest (15) comprises a rotating base (154), an anti-pinch locking piece (159), an armrest seat (157), and an armrest cover (158). The rotating base (154) is connected to the inside of the armrest seat (157) through a shaft. The top of the armrest seat (157) is buckled with the armrest cover (158). The anti-pinch locking piece (159) is arranged at the front end of the bottom of the armrest seat (157) and is a rotating elastic button structure. A first limiting opening (155) is provided on the side of the upper end of the rotating base (154) facing the anti-pinch locking piece (159). The first limiting opening (155) is engaged with the anti-pinch locking piece (159). A second limiting opening (156) is provided on the side of the rotating base (154) opposite to the first limiting opening (155).

12. The stackable armchair according to claim 11, wherein: The rotating base (154) is engaged with the bottom of the armrest seat (157) through the second limiting opening (156), and a connecting seat (153) is fixedly provided at the bottom end of the rotating base (154), and the connecting seat (153) is inserted into the top end of the rear support leg (1), and the connecting seat (153) is connected to the rear support leg (1) by a pin, and a spring seat (1511) is provided inside one end of the anti-pinch locking member (159) of the armrest seat (157), and a limiting groove (1512) is provided on one side of the spring seat (1511) of the armrest seat (157). 57) An axis groove (1513) is provided on one side of the limiting groove (1512), a spring body (1510) is provided between one end of the anti-pinch locking member (159) and the spring seat (1511), an upper end of the anti-pinch locking member (159) is provided on one side of the axis groove (1513), the axis rod (1515) and the spring body (1510) are respectively located at two ends of the anti-pinch locking member (159), the anti-pinch locking member (159) takes the axis rod (1515) as the center of rotation, and the axis rod (1515) is rotatably connected to the inside of the axis groove (1513).

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