A folding and adjustable backrest angle deck chair

Abstract

The application relates to a foldable and adjustable backrest angle deck chair, which comprises a frame body and a supporting surface arranged on the frame body; the frame body comprises a seat frame, a back frame and a leg frame; the supporting surface comprises a first supporting surface arranged on the seat frame and a second supporting surface arranged on the back frame; the seat frame comprises two oppositely arranged seat vertical rods and at least two seat horizontal rods for supporting the two seat vertical rods; the back frame comprises two oppositely arranged back vertical rods, at least two back horizontal rods for supporting the two back vertical rods and two connecting pieces connecting the two back vertical rods and corresponding seat vertical rods; a height adjusting structure for adjusting the supporting angle of the back frame is arranged between the back frame and the seat frame; the seat frame is formed with a sliding channel for sliding arrangement of the back frame. The application has the effect of improving the assembling and folding efficiency of the deck chair.

Description

Technical Field

[0001] This application relates to the field of furniture, and in particular to a foldable recliner with an adjustable backrest angle. Background Technology

[0002] As people's living standards improve and living spaces diversify, the function and design of recliners are constantly evolving. Recliners not only need to meet people's needs for relaxation and leisure time, but also need to adapt to different usage scenarios and space constraints. In related technologies, to achieve the storage function of a recliner, the common approach is to disassemble the various parts and then reassemble them when needed. While this method can reduce the space occupied by the recliner to some extent, the assembly process is relatively cumbersome and requires considerable time and effort. In response to the aforementioned technologies, the inventor believes there is a need to provide a recliner with high assembly and folding efficiency. Utility Model Content

[0003] To improve the assembly and folding efficiency of the recliner, this application provides a foldable recliner with an adjustable backrest angle.

[0004] The foldable and adjustable backrest recliner provided in this application adopts the following technical solution: A foldable and adjustable backrest recliner includes a frame body and a support surface disposed on the frame body. The frame body includes a seat frame, a back frame detachably mounted to one end of the seat frame, and a leg frame rotatably mounted to the bottom of the seat frame. The support surface includes a first support surface disposed on the seat frame and a second support surface disposed on the back frame. The seat frame includes two oppositely arranged seat vertical bars and at least two seat horizontal bars for supporting the two seat vertical bars. The back frame includes two oppositely arranged back vertical bars, at least two back horizontal bars for supporting the two back vertical bars, and two connectors connecting the two back vertical bars and the corresponding seat vertical bars. A height adjustment structure for adjusting the support angle of the back frame is provided between the back frame and the seat frame. The seat frame forms a sliding channel for the back frame to slide.

[0005] By adopting the above technical solution, the foldable and adjustable-backrest recliner has a use position and a folding position. When the recliner is in the use position, the back frame is tilted at the end of the seat frame, the back frame connector is locked to the seat frame, and the leg frame is supported on the bottom side of the seat frame. When the recliner is in the folding position, the connector is unlocked, the back frame is arranged in the sliding channel of the seat frame located at the bottom of the first support surface, and the leg frame is rotated and folded to the bottom side of the seat frame. The arrangement of the seat frame, back frame, and leg frame ensures the basic support structure of the recliner, and the first and second support surfaces provide support for the user. The height adjustment structure allows for adjustment of the back frame support angle to meet different usage needs, which helps to improve the assembly and folding efficiency of the recliner.

[0006] Optionally, the back vertical rod has an arrangement through hole penetrating the inner and outer surfaces for arranging the connector. The connector includes a mounting sleeve arranged in the arrangement through hole, a locking shaft slidably arranged in the mounting sleeve, and a support spring for driving the locking shaft to reset. The mounting sleeve is provided with a guide groove along the locking direction for sliding arrangement of the locking shaft. The locking shaft includes a sliding part slidably arranged inside the mounting sleeve, a locking part connected to one end of the sliding part, and a rotating handle connected to the other end of the sliding part. The tail end of the seat vertical rod is provided with a first locking hole for the locking part to engage.

[0007] By adopting the above technical solution, the operator pulls the rotating handle outward, and the locking shaft retracts inward along the mounting sleeve. After aligning the axis of the locking shaft with the first locking hole, the rotating handle is released, and the locking shaft resets under the action of the support spring. The locking part is engaged in the first locking hole to lock the two, which facilitates the installation and disassembly of the back frame, thereby realizing the foldable storage function of the recliner.

[0008] Optionally, the side of the rotary handle has a limiting protrusion, and the mounting sleeve has a first limiting groove at one end near the rotary handle for accommodating the limiting protrusion.

[0009] By adopting the above technical solution, the limiting protrusion on the side of the rotating handle on the locking shaft of the connector cooperates with the first limiting groove at the mounting sleeve, which can restrict the rotating handle from rotating freely, ensure that the locking shaft slides stably in the mounting sleeve, and enable the locking part to be accurately engaged in the first locking hole of the seat vertical rod, thereby ensuring the stability of the connection between the back frame and the seat frame, and thus ensuring the overall structural stability of the recliner.

[0010] Optionally, the locking part has two positioning planes arranged in parallel and extending along the length direction on the side; the mounting sleeve has a second limiting groove for the limiting protrusion to be engaged after rotation; the two seat vertical rods have two second locking holes at the end of the sliding channel away from the first locking hole for locking the two connectors one by one, and the seat vertical rod has a sliding through groove connecting the first locking hole and the second locking hole.

[0011] By adopting the above technical solution, the operator pulls the rotating handle outward to disengage the limiting protrusion from the first limiting groove, rotates it a certain angle and releases the rotating handle to place the limiting protrusion in the second limiting groove, thereby unlocking the connector in the first locking hole and allowing the connector to slide along the length of the sliding channel. When the connector enters the second locking hole, the operator pulls the rotating handle outward again to disengage the limiting protrusion from the second limiting groove, rotates it a certain angle and releases the rotating handle to place the limiting protrusion in the first limiting groove, thereby locking the connector in the second locking hole and fixing the back frame at the other end of the sliding channel. This ensures the stability of the back frame position when the back frame and seat frame are folded, improving the efficiency of the recliner's movement and storage.

[0012] Optionally, the width of the sliding groove is smaller than the diameter of the first locking hole, and the distance between the two positioning planes is the same as the width of the sliding groove.

[0013] By adopting the above technical solution, the dimensions of the sliding channel and the first and second locking holes are further limited, making it less likely for the connector to move when locked in the first or second locking hole, which helps to improve the support stability of the back frame when the recliner is in the use position or folding position; the distance between the positioning plane and the width of the sliding channel can ensure the smoothness of the sliding, which helps to improve the convenience of the recliner's unfolding and folding.

[0014] Optionally, the height adjustment structure includes a height adjustment rod hinged to the two back vertical bars, a height adjustment component arranged on the height adjustment rod, and a support crossbar arranged at the tail end of the back frame for fixing the height adjustment component; the height adjustment component is provided with an adjustment groove for the support crossbar to be engaged, and the number of adjustment grooves is not less than two and they are evenly spaced along the length direction of the height adjustment component.

[0015] By adopting the above technical solution, the height adjustment rod is hinged to the back vertical rod, the height adjustment component is arranged on the height adjustment rod and is engaged with the support crossbar at the tail end of the back frame through the adjustment groove. There are no less than two adjustment grooves and they are evenly spaced, which can realize the adjustment of the support angle of the back frame and provide multiple adjustment positions to meet different usage needs.

[0016] Optionally, the number of height adjustment components is two, and the two height adjustment components are symmetrically arranged on both sides of the height adjustment rod.

[0017] By adopting the above technical solution, two height adjustment components are symmetrically arranged on both sides of the height adjustment rod, which makes the adjustment of the backrest frame support angle more stable and balanced, and improves the reliability and comfort of the recliner backrest angle adjustment.

[0018] Optionally, the leg frame includes two leg assemblies hinged to the bottom of the seat frame; each leg assembly includes two leg members rotatably mounted on two seat vertical rods and symmetrically arranged, and a leg cross brace connecting the movable ends of the two leg members; the two seat vertical rods are symmetrically provided with two hinge seats for hinged connection of the four leg members one by one; each leg member has an arrangement hole on the side facing the hinge seat and a ball-head spring plunger is provided in the arrangement hole; the hinge seat has a first engagement hole and a second engagement hole for engagement of the plunger ball of the ball-head spring plunger.

[0019] By adopting the above technical solution, the leg frame of the recliner can be hinged to the seat frame through the leg support assembly, thereby enabling the leg frame to rotate. When the ball spring plunger is arranged in the first locking hole, the movable end of the leg rod is supported on the ground. When the ball spring plunger is arranged in the second locking hole, the leg rod is attached to the seat vertical rod. The leg rod is engaged with the first and second locking holes of the hinge seat through the ball spring plunger, which can fix the leg frame in two positions, making it easy to switch the recliner between the use and storage states.

[0020] Optionally, the bottom of the first leg and the second leg are provided with anti-slip components.

[0021] By adopting the above technical solution, anti-slip components are installed at the bottom of the first and second legs, which can enhance the anti-slip performance of the recliner during use and improve the stability and safety of the recliner.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. A foldable and adjustable backrest recliner, comprising a frame body and a support surface; the foldable and adjustable backrest recliner has a use position and a folding position. When the recliner is in the use position, the backrest frame is tilted at the rear end of the seat frame, the backrest frame connector is locked to the seat frame, and the leg frame is supported on the bottom side of the seat frame; when the recliner is in the folding position, the connector is unlocked, the backrest frame is arranged in a sliding channel of the seat frame located at the bottom of the first support surface, and the leg frame is rotated and folded to the bottom side of the seat frame; the height adjustment structure allows for adjustment of the backrest frame support angle to meet different usage needs and improve the assembly and folding efficiency of the recliner. 2. The operator pulls the rotating handle outward, and the locking shaft retracts inward along the mounting sleeve. After aligning the axis of the locking shaft with the first locking hole, the rotating handle is released, and the locking shaft returns to its original position under the action of the support spring. The locking part is engaged in the first locking hole to lock the two together, which facilitates the installation and removal of the back frame, thereby realizing the foldable storage function of the recliner. 3. The operator pulls the rotating handle outward to disengage the limiting protrusion from the first limiting groove, rotates it a certain angle and releases the rotating handle to place the limiting protrusion into the second limiting groove, thus unlocking the connector in the first locking hole and allowing the connector to slide along the length of the sliding channel. When the connector enters the second locking hole, the operator pulls the rotating handle outward again to disengage the limiting protrusion from the second limiting groove, rotates it a certain angle and releases the rotating handle to place the limiting protrusion into the first limiting groove, thus locking the connector into the second locking hole and fixing the back frame at the other end of the sliding channel. This ensures the stability of the back frame position when the back frame and seat frame are folded, improving the efficiency of the recliner's movement and storage. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a foldable and adjustable backrest recliner, as described in the embodiments of this application.

[0024] Figure 2 This is a schematic diagram of the fit between the frame body and the supporting surface in an embodiment of this application.

[0025] Figure 3 This is a schematic diagram of the fit between the seat frame and the first support surface in an embodiment of this application.

[0026] Figure 4 This is a schematic diagram of the cooperation between the back frame and the second support surface in an embodiment of this application.

[0027] Figure 5 This is a schematic diagram of the connector locking in the first locking hole in an embodiment of this application.

[0028] Figure 6 This is a schematic diagram of the locking shaft in an embodiment of this application.

[0029] Figure 7 This is a schematic diagram of the connector unlocking at the first locking hole in an embodiment of this application.

[0030] Figure 8 This is a schematic diagram of the locking between the limiting protrusion and the first limiting groove in an embodiment of this application.

[0031] Figure 9 This is a schematic diagram of the locking of the ball-head spring plunger in the first locking hole in an embodiment of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Frame body; 2. Support surface; 21. First support surface; 22. Second support surface; 3. Seat frame; 31. Seat vertical rod; 311. First locking hole; 312. Second locking hole; 313. Sliding through groove; 314. Hinge seat; 3141. First snap-fit ​​hole; 3142. Second snap-fit ​​hole; 32. Seat crossbar; 33. Sliding channel; 34. Support crossbar; 4. Back frame; 41. Back vertical rod; 411. Arrangement through hole; 412. Height adjustment rod; 4121. Rotating rod; 4122. Connecting rod; 413. Height adjustment component; 4131. Adjustment groove; 42. Back crossbar; 4 3. Connecting parts; 431. Mounting sleeve; 4311. Guide groove; 4312. First limiting groove; 4313. Second limiting groove; 432. Locking shaft; 4321. Sliding part; 4322. Locking part; 43221. Positioning plane; 4323. Rotating handle; 43231. Limiting protrusion; 433. Support spring; 5. Leg frame; 51. Leg assembly; 511. Leg rod; 5111. Arrangement hole; 5112. Abutting slope; 512. Leg cross brace; 513. Anti-slip part; 514. Ball head spring plunger; 5141. Plunger housing; 5142. Plunger spring; 5143. Plunger ball head. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0034] This application discloses a foldable recliner with an adjustable backrest angle. (See also...) Figure 1 and Figure 2 The foldable and adjustable-backrest recliner includes a frame body 1 and a support surface 2 disposed on the frame body 1. The frame body 1 includes a seat frame 3, a backrest frame 4 detachably mounted to one end of the seat frame 3, and a leg frame 5 rotatably mounted to the bottom of the seat frame 3. The support surface 2 includes a first support surface 21 disposed on the seat frame 3 and a second support surface 22 disposed on the backrest frame 4.

[0035] Reference Figure 3 The seat frame 3 includes two opposing seat vertical rods 31 and three seat horizontal rods 32 for supporting the two seat vertical rods 31. The middle part of the seat horizontal rods 32 is bent away from the first support surface 21 and both ends are fixed to the two seat vertical rods 31 by screws. The three seat horizontal rods 32 are evenly spaced along the length of the seat vertical rods 31. A sliding channel 33 is formed between the seat horizontal rods 32 and the first support surface 21 for the back frame 4 to slide.

[0036] Reference Figure 4The back frame 4 includes two opposing back vertical bars 41, multiple back horizontal bars 42 for supporting the two back vertical bars 41, and two connectors 43 that connect the two back vertical bars 41 and their corresponding seat vertical bars 31. The back vertical bars 41 have through holes 411 extending through their inner and outer surfaces for accommodating the connectors 43. The middle portion of the back horizontal bars 42 bends away from the second support surface 22, and both ends are fixed to the two back vertical bars 41 by screws. In this embodiment, the maximum distance between the back horizontal bars 42 and the first support surface 21 is less than the height of the sliding channel 33, allowing the back frame 4 to be positioned within the sliding channel 33.

[0037] Reference Figure 5 and Figure 6 The connector 43 includes a mounting sleeve 431 disposed within a through hole 411, a locking shaft 432 slidably disposed within the mounting sleeve 431, and a support spring 433 for resetting the locking shaft 432. The mounting sleeve 431 has a guide groove 4311 along the locking direction for sliding of the locking shaft 432. The locking shaft 432 includes a sliding portion 4321 slidably disposed within the mounting sleeve 431, a locking portion 4322 connected to one end of the sliding portion 4321, and a rotating handle 4323 connected to the other end of the sliding portion 4321. One end of the support spring 433 abuts against the locking portion 4322, and the other end abuts against the side of the mounting sleeve 431 near the rotating handle 4323, so that the locking shaft 432 always has a tendency to move away from the mounting sleeve 431.

[0038] Reference Figure 3 and Figure 7 The base vertical rod 31 has a first locking hole 311 opposite the through hole 411 for the locking part 4322 to engage. At the end of the sliding channel 33 away from the first locking hole 311, both base vertical rods 31 have two second locking holes 312 for the two connecting pieces 43 of the two back vertical rods 41 to engage one-to-one. Both base vertical rods 31 have a sliding groove 313 connecting the first locking hole 311 and the corresponding second locking hole 312. In this embodiment, the width of the sliding groove 313 is smaller than the diameter of the first locking hole 311, making it less likely for the connecting piece 43 to move at the first locking hole 311 when the back frame 4 is supported at the tail end of the base bracket. The locking part 4322 has two parallel positioning planes 43221 extending along its length on its side. The distance between the two positioning planes 43221 is the same as the width of the sliding groove 313.

[0039] Reference Figure 6 and Figure 8The rotating handle 4323 has a limiting protrusion 43231 on its side, and the mounting sleeve 431 has a first limiting groove 4312 for accommodating the limiting protrusion 43231 at one end near the rotating handle 4323. The mounting sleeve 431 also has a second limiting groove 4313 for accommodating the limiting protrusion 43231 after rotation at one end near the rotating handle 4323. In this embodiment, the included angle between the central axis of the first limiting groove 4312 and the central axis of the second limiting groove 4313 is 90°. When the limiting protrusion 43231 is arranged in the first limiting groove 4312, the locking part 4322 is locked in the first locking hole 311 or the second locking hole 312; when the limiting protrusion 43231 is arranged in the second limiting groove 4313, the locking part 4322 can slide back and forth along the length of the sliding groove 313, thereby realizing the folding and unfolding of the back frame 4.

[0040] Reference Figure 1 and Figure 4 The height adjustment structure includes a height adjustment rod 412 hinged at both ends to the back vertical rod 41, a height adjustment component 413 arranged on the height adjustment rod 412, and a support crossbar 34 arranged at the tail end of the back frame 4 for fixing the height adjustment component 413. The height adjustment rod 412 includes two symmetrically mounted rotating rods 4121 rotatably mounted on the two back vertical rods 41, and a connecting rod 4122 connecting the movable ends of the two rotating rods 4121. There are two height adjustment components 413, symmetrically arranged on the side of the rotating rods 4121 facing the support crossbar 34. Each height adjustment component 413 has multiple evenly spaced adjustment slots 4131 along its length for engaging with the support crossbar 34. In this embodiment, each of the two height adjustment components 413 has four adjustment slots 4131, and the four adjustment slots 4131 of the two height adjustment components 413 are arranged in a one-to-one correspondence.

[0041] Reference Figure 2 The leg frame 5 includes two leg assemblies 51 hinged to the bottom of the seat frame 3. The two leg assemblies 51 are arranged opposite each other along the length of the seat upright 31. Each leg assembly 51 includes two leg members 511 rotatably mounted on their respective seat uprights 31 and a leg cross brace 512 connecting the movable ends of the two leg members 511. Two hinge seats 314 are symmetrically arranged on the two seat uprights 31 for hinged connection of the four leg members 511. Anti-slip elements 513 are provided at the bottom ends of all four leg members 511. In this embodiment, the anti-slip elements 513 may be rubber sleeves.

[0042] Reference Figure 2 and Figure 9The leg member 511 has an arrangement hole 5111 on the side facing the hinge seat 314, and a ball-head spring plunger 514 is disposed within the arrangement hole 5111. The ball-head spring plunger 514 includes a plunger housing 5141, a plunger spring 5142, and a plunger ball head 5143. One end of the plunger spring 5142 abuts against the bottom end of the inner cavity of the plunger housing 5141, and the other end abuts against the plunger ball head 5143, so that the plunger ball head 5143 always tends to abut against the opening of the plunger housing 5141. The hinge seat 314 has a first engagement hole 3141 and a second engagement hole 3142 for engaging the plunger ball head 5143. There are four first engagement holes 3141, which are arranged one by one at the inner end of the four hinge seats 314. There are four second engagement holes 3142, which are arranged one by one at the outer end of the four hinge seats 314. The hinged end of the leg member 511 has an abutting slope 5112 that abuts against the bottom end of the seat vertical rod 31. When the abutting slope 5112 of the leg member 511 abuts against the bottom end of the seat vertical rod 31, the plunger ball head 5143 engages with the first engaging hole 3141.

[0043] The implementation principle of a foldable and adjustable backrest recliner according to an embodiment of this application is as follows: the foldable and adjustable backrest recliner has a use position and a folding position; when the recliner is in the use position, the two connecting pieces 43 of the backrest frame 4 are respectively engaged with the corresponding first locking holes 311, and the two ends of the support crossbar 34 are respectively arranged in the corresponding adjustment slots 4131 of the two height adjustment pieces 413; the four plunger ball heads 5143 of the leg frame 5 are respectively engaged with the corresponding first locking holes 3141, and the four abutting inclined surfaces 5112 abut against the bottom end of the corresponding seat vertical bar 31; the leg frame... The frame 5 is in a supported state; when the recliner is in the folding position, the back frame 4 is arranged inside the sliding channel 33, one end of the back vertical rod 41 is engaged with the second locking hole 312 through the connector 43, and the plunger ball head 5143 of the leg frame 5 is engaged with the second locking hole 3142; the arrangement of the seat frame 3, back frame 4 and leg frame 5 ensures the basic support structure of the recliner, and the first support surface 21 and the second support surface 22 provide support for the user; the height adjustment structure can realize the adjustment of the support angle of the back frame 4 to meet different usage needs, which helps to improve the assembly and folding efficiency of the recliner.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A foldable, retractable recliner with an adjustable backrest angle, characterized in that, The system includes a frame body (1) and a support surface (2) disposed on the frame body (1); the frame body (1) includes a seat frame (3), a back frame (4) detachably mounted to one end of the seat frame (3), and a leg frame (5) rotatably mounted to the bottom of the seat frame (3); the support surface (2) includes a first support surface (21) disposed on the seat frame (3) and a second support surface (22) disposed on the back frame (4); the seat frame (3) includes two oppositely arranged seat uprights (31) for supporting the two seat uprights (31). 1) At least two seat crossbars (32); the back frame (4) includes two oppositely arranged back vertical bars (41), at least two back crossbars (42) for supporting the two back vertical bars (41), and two connectors (43) connecting the two back vertical bars (41) and the corresponding seat vertical bars (31); a height adjustment structure for adjusting the support angle of the back frame (4) is provided between the back frame (4) and the seat frame (3); the seat frame (3) forms a sliding channel (33) for the back frame (4) to slide.

2. The foldable and adjustable backrest recliner according to claim 1, characterized in that, The back vertical rod (41) has an arrangement through hole (411) penetrating the inner and outer surfaces for arranging the connector (43). The connector (43) includes a mounting sleeve (431) arranged in the arrangement through hole (411), a locking shaft (432) slidably arranged in the mounting sleeve (431), and a support spring (433) for driving the locking shaft (432) to reset. The mounting sleeve (431) is provided with a locking shaft (432) along the locking direction for arranging the locking shaft (432). 2) A guide groove (4311) for sliding arrangement; the locking shaft (432) includes a sliding part (4321) that is slidably arranged inside the mounting sleeve (431), a locking part (4322) connected to one end of the sliding part (4321), and a rotating handle (4323) connected to the other end of the sliding part (4321); the tail end of the seat vertical rod (31) is provided with a first locking hole (311) for the locking part (4322) to be engaged.

3. A foldable, storage-friendly recliner with an adjustable backrest angle according to claim 2, characterized in that, The rotating handle (4323) has a limiting protrusion (43231) on its side, and the mounting sleeve (431) has a first limiting groove (4312) at one end near the rotating handle (4323) for arranging the limiting protrusion (43231).

4. A foldable, storage-friendly, and adjustable-backrest recliner according to claim 3, characterized in that, The locking part (4322) has two positioning planes (43221) arranged in parallel and extending along the length direction on the side; the mounting sleeve (431) has a second limiting slide groove (4313) for the limiting protrusion (43231) to be engaged after rotation; the two seat vertical rods (31) have two second locking holes (312) at the end of the sliding channel (33) away from the first locking hole (311) for locking the two connectors (43) one by one, and the seat vertical rod (31) has a sliding through groove (313) connecting the first locking hole (311) and the second locking hole (312).

5. A foldable, storage-friendly, and backrest-angle-adjustable recliner according to claim 4, characterized in that, The width of the sliding groove (313) is smaller than the diameter of the first locking hole (311), and the distance between the two positioning planes (43221) is the same as the width of the sliding groove (313).

6. A foldable, storage-friendly, and backrest-angle-adjustable recliner according to claim 1, characterized in that, The height adjustment structure includes a height adjustment rod (412) hinged to the two back vertical rods (41), a height adjustment component (413) arranged on the height adjustment rod (412), and a support crossbar (34) arranged at the tail end of the back frame (4) for fixing the height adjustment component (413); the height adjustment component (413) is provided with an adjustment groove (4131) for the support crossbar (34) to be snapped into place, and the number of adjustment grooves (4131) is not less than two and they are evenly spaced along the length direction of the height adjustment component (413).

7. A foldable, storage-friendly, and backrest-angle-adjustable recliner according to claim 6, characterized in that, The number of height adjustment components (413) is two, and the two height adjustment components (413) are symmetrically arranged on both sides of the height adjustment rod (412).

8. A foldable, storage-friendly recliner with an adjustable backrest angle according to claim 1, characterized in that, The leg frame (5) includes two leg assemblies (51) hinged to the bottom of the seat frame (3); the leg assembly (51) includes two leg rods (511) rotatably mounted on the two seat vertical rods (31) and symmetrically arranged, and a leg cross brace (512) connecting the movable ends of the two leg rods (511); the two seat vertical rods (31) are symmetrically provided with two hinge seats (314) for hinged one by one of the four leg rods (511); the leg rods (511) have a placement hole (5111) on the side facing the hinge seat (314) and a ball spring plunger (514) is provided in the placement hole (5111); the hinge seat (314) has a first locking hole (3141) and a second locking hole (3142) for the plunger ball head (5143) of the ball spring plunger (514) to engage.

9. A foldable and adjustable backrest recliner according to claim 8, characterized in that, The bottom of the outrigger assembly (51) is provided with an anti-slip component (513).

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