Folding bed with adjustable backrest

Abstract

The utility model relates to the technical field of folding beds, in particular to a folding bed with an adjustable backrest, which comprises a foldable bed body frame, the backrest frame comprises a connecting end and a supporting end, the supporting end is arranged close to one end of the bed body frame, and the connecting end is rotationally connected with the inner side of the bed body frame; the angle adjusting assemblies are used for adjusting the angle between the bed body frame and the backrest frame, the first ends of the angle adjusting assemblies are rotationally connected with the inner side of the bed body frame, and the second ends of the angle adjusting assemblies are connected with the backrest frame; under the action of external force, the at least one angle adjusting assembly and the backrest frame can move to the inner side of the bed body frame; the bed body frame and the backrest frame are connected through the angle adjusting assembly, so that the angle of the backrest frame can be adjusted to meet the use requirements of users for different angles, and the use feeling of the users is improved; meanwhile, the backrest frame can be stored on the inner side of the bed body frame, so that the occupied space is reduced, the transportation is convenient, and the transportation cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of folding bed, especially a folding bed with adjustable backrest. BACKGROUND

[0002] With the acceleration of people's life rhythm, people usually need to take a break in the office, hospital or outdoor place etc.; But the current bed occupies place, and transportation is inconvenient, so the folding bed emerges as the times require; But the existing folding bed is not high in folding degree, still occupies place after folding, and transportation is inconvenient; At the same time, the folding bed generally does not have a backrest, even if there is a backrest, the angle of the backrest cannot be adjusted, which is difficult to meet people's use demand.

[0003] Based on the shortcomings of the prior art, it is urgent to research a folding bed with adjustable backrest to solve the above problems. INVENTION CONTENTS

[0004] In order to solve the above technical problems, the utility model provides a folding bed with adjustable backrest, the bed body frame and the backrest frame in the utility model are connected through at least one angle adjusting assembly, so that the backrest frame can adjust the angle relative to the bed body frame, to adapt to the use demand of users to different angles, improve the use experience of users.

[0005] The utility model provides a folding bed with adjustable backrest, which comprises:

[0006] The bed body frame can be folded;

[0007] At least one backrest frame comprises a connecting end and a supporting end arranged oppositely, the supporting end is arranged close to one end of the bed body frame, and the connecting end is rotatably connected to the inner side of the bed body frame;

[0008] At least one angle adjusting assembly is used to adjust the angle between the bed body frame and the backrest frame, the first end of the angle adjusting assembly is rotatably connected to the inner side of the bed body frame, and the second end of the angle adjusting assembly is connected to the backrest frame;

[0009] Under the action of external force, the at least one angle adjusting assembly and the backrest frame can move to the inner side of the bed body frame.

[0010] Further, the angle adjusting assembly comprises a first adjusting part and a second adjusting part;

[0011] The second adjusting part is sleeved on the first adjusting part, the first end of the second adjusting part is rotatably connected to the inner side of the bed body frame, and the first end of the first adjusting part is rotatably connected to the backrest frame;

[0012] At least two limiting grooves are arranged on the length direction of the second adjusting part;

[0013] The second end of the first adjusting member is provided with a clamping protrusion matched with the limiting groove.

[0014] Further, the angle adjusting assembly further comprises an elastic member, two sides of the elastic member are connected with the second end of the first adjusting member and the first end of the second adjusting member respectively.

[0015] Further, the second adjusting member is provided with a connecting groove, the connecting groove is arranged along the length direction of the second adjusting member.

[0016] The at least two limiting grooves are in communication with the connecting groove, the limiting groove extends towards the second end of the second adjusting member, and the included angle between the limiting groove and the connecting groove is an acute angle.

[0017] Further, the bed body frame is provided with at least two groups of first leg assemblies.

[0018] The at least two groups of first leg assemblies are fixedly or rotatably connected with the bed body frame through a first locking assembly.

[0019] Further, the bed body frame comprises a first frame unit and a second frame unit rotatably connected.

[0020] The bed body frame further comprises a second leg assembly, the second leg assembly is arranged at the connecting position of the first frame unit and the second frame unit, and the first frame unit and the second frame unit can be folded towards the second leg assembly.

[0021] Further, the bed body frame is provided with two groups of first leg assemblies.

[0022] The second end of the first frame unit is rotatably connected with the first end of the second frame unit.

[0023] The first group of first leg assemblies is arranged at the first end of the first frame unit, and the second group of second leg assemblies is arranged at the second end of the second frame unit.

[0024] When the folding bed is in the folded state, the second leg assembly has a gap between the two groups of first leg assemblies.

[0025] Further, along the length direction of the folding bed, the thickness of the first leg assembly is the same as the thickness of the second leg assembly.

[0026] Further, the first locking assembly comprises a first connecting rod, a second connecting rod and a linkage clamping member.

[0027] The first connecting rod is sleeved on the second connecting rod, one end of the first connecting rod is rotationally connected with the bed body frame, and one end of the second connecting rod is rotationally connected with the first supporting leg assembly.

[0028] The first connecting rod can be clamped and fixed with the second connecting rod through the linkage clamping piece.

[0029] Further, the first connecting rod is provided with a first clamping groove, and the second connecting rod is provided with at least one second clamping groove.

[0030] The linkage clamping piece comprises a clamping portion, a connecting portion and a pushing portion arranged in sequence, the connecting portion is rotationally connected with the first connecting rod through a rotating shaft, and the clamping portion can be simultaneously clamped in the first clamping groove and the second clamping groove to fix the first connecting rod and the second connecting rod.

[0031] When the pushing portion is subjected to external force, the clamping portion is lifted under the driving of the pushing portion and can be moved out of the first clamping groove and the second clamping groove, and the first connecting rod and the second connecting rod are slidingly connected.

[0032] The embodiment of the utility model has the following beneficial effects:

[0033] The bed body frame and the backrest frame in the utility model are connected through at least one angle adjusting assembly, so that the backrest frame can be adjusted in angle relative to the bed body frame to adapt to the use demand of users for different angles and improve the use experience of users; meanwhile, the backrest frame is rotationally connected with the inner side of the bed body frame, so that the backrest frame can be accommodated in the inner side of the bed body frame, and after being accommodated in the inner side of the bed body frame, the overall levelness of the bed body frame is not affected, the use experience of users is further improved; and the occupied space can be reduced, the utility model is convenient to use, convenient to transport and low in transportation cost. ACCURATE DRAWINGS

[0034] In order to more clearly illustrate the technical scheme of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating creative labor.

[0035] Figure 1 The structure diagram of the folding bed when the backrest frame in the embodiment is in the supporting state;

[0036] Figure 2 The structure diagram of the folding bed when the backrest frame in the embodiment is in the folding state;

[0037] Figure 3A structure diagram of the folding bed in the folded state according to the embodiment;

[0038] Figure 4 A structure diagram of the first locking assembly according to the embodiment;

[0039] Figure 5 A structure diagram of the backrest frame, the bed frame and the angle adjusting assembly after being connected according to the embodiment.

[0040] In the drawings, the reference signs correspond to:

[0041] 1-bed frame; 2-backrest frame; 3-angle adjusting assembly; 4-first leg assembly; 5-first locking assembly; 6-second leg assembly; 11-first frame unit; 12-second frame unit; 31-first adjusting member; 32-second adjusting member; 51-first connecting rod; 52-second connecting rod; 53-linkage clamping member; 321-limiting groove; 322-clamping protruding part; 323-connecting groove; 511-first clamping groove; 531-clamping part; 532-connecting part; 533-pushing part. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0043] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0044] In view of the defects of the prior art, the bed frame and the backrest frame in the present application are connected by at least one set of angle adjusting assemblies, so that the backrest frame can be adjusted in angle relative to the bed frame to adapt to the use requirements of users for different angles and improve the use experience of users. At the same time, the backrest frame is rotatably connected to the inner side of the bed frame, so that the backrest frame can be accommodated in the inner side of the bed frame, and after being accommodated in the inner side of the bed frame, it does not affect the overall levelness of the bed frame, further improving the use experience of users. It can also reduce the space occupied, and is convenient to use and transport, reducing transportation costs.

[0045] Referring to the drawings Figures 1-5 The embodiment provides a folding bed with adjustable backrest, which comprises: a foldable bed body frame 1; at least one set of backrest frames 2, which comprises oppositely arranged connecting ends and supporting ends, the supporting ends are arranged close to one end of the bed body frame 1, and the connecting ends are rotationally connected to the inner side of the bed body frame 1; at least one set of angle adjusting assemblies 3 for adjusting the angle between the bed body frame 1 and the backrest frames 2, the first end of the angle adjusting assembly 3 is rotationally connected to the inner side of the bed body frame 1, and the second end of the angle adjusting assembly 3 is connected to the backrest frame 2; under the action of external force, the at least one set of angle adjusting assemblies 3 and the backrest frames 2 can be moved to the inner side of the bed body frame 1.

[0046] In the embodiment, the bed body frame 1 and the backrest frames 2 are connected through the at least one set of angle adjusting assemblies 3, so that the backrest frames 2 can be adjusted in angle relative to the bed body frame 1, to adapt to the use requirements of users in different angles, and improve the use experience of the users; meanwhile, the backrest frames 2 are rotationally connected to the inner side of the bed body frame 1, so that the backrest frames 2 can be stored in the inner side of the bed body frame 1, and after being stored in the inner side of the bed body frame 1, the overall levelness of the bed body frame 1 is not affected, the use experience of the users is further improved, the space occupied by the folding bed can be reduced, the folding bed is convenient to use, convenient to transport and low in transportation cost.

[0047] In the embodiment, the backrest frames 2 are used for supporting the back of the user, and the angle between the backrest frames 2 and the bed body frame 1 is adjusted, so as to adapt to the different use requirements of the user; the shape and size of the backrest frames 2 are not limited, as long as the backrest frames 2 can support the back of the user.

[0048] Specifically, the backrest frames 2 are in U-shaped structure, the length of the open end of the backrest frames 2 is slightly smaller than the width of the bed body frame 1, the open end of the backrest frames 2 is rotationally connected to the bed body frame 1, and the supporting end of the backrest frames 2 rotates around the open end.

[0049] In the embodiment, the folding bed comprises one set of backrest frames 2, the backrest frames 2 are arranged on one side of the bed body frame 1, and the backrest frames 2 are in the folded state, the supporting end of the backrest frames 2 has a gap with the bed body frame 1 and is stored in the bed body frame 1.

[0050] In some possible implementations, the folding bed comprises at least one set of backrest frames 2, because the arrangement direction of the backrest frames 2 is fixed after the folding bed is placed on the ground, if the user is not satisfied with the arrangement direction of the backrest frames 2, the folding bed needs to be rotated by 180° to adjust the arrangement direction of the backrest frames 2, which is inconvenient to adjust in a narrow place, in order to adapt to the different direction requirements of the user to the backrest frames 2, two sets of backrest frames 2 can be oppositely arranged at the two ends of the bed body frame 1, the two sets of backrest frames 2 can be used for backrest or adjusting the height of the feet, the arrangement can further improve the use experience of the user and the competitiveness of the folding bed in the embodiment.

[0051] In some possible embodiments, the folding bed comprises a set of angle adjustment assemblies 3.

[0052] In the present embodiment, the folding bed comprises two sets of angle adjustment assemblies 3, which are respectively arranged on both sides of the opening end of the backrest frame 2, so that the opening end of the backrest frame 2 is synchronously adjusted in angle and supported, and the support stability of the backrest frame 2 is ensured.

[0053] Specifically, the two sets of angle adjustment assemblies 3 are symmetrically arranged on both sides of the backrest frame 2.

[0054] In the present embodiment, the opening end of the backrest frame 2 is respectively provided with a rotating shaft, one end of the rotating shaft is fixedly connected with the opening end of the backrest frame 2, and the other end of the rotating shaft is rotatably connected with the bed body frame 1; along the axis direction of the rotating shaft, there is an accommodation gap between one end of the backrest frame 2 on the same side and the bed body frame 1, and the accommodation gap can accommodate one set of angle adjustment assemblies 3 after folding, so that the backrest frame 2 is accommodated in the bed body frame 1 after folding, and the angle adjustment assemblies 3 are also accommodated in the bed body frame 1. In this way, the angle adjustment assemblies 3 or the backrest frame 2 can be avoided after folding, thereby minimizing the volume of the folding bed after folding, avoiding occupying too much space, and facilitating storage and transportation, and improving the user's experience.

[0055] In some possible embodiments, the angle adjustment assembly 3 comprises a first adjusting piece 31 and a second adjusting piece 32; the second adjusting piece 32 is sleeved on the first adjusting piece 31, the first end of the second adjusting piece 32 is rotatably connected with the inner side of the bed body frame 1, and the first end of the first adjusting piece 31 is rotatably connected with the backrest frame 2; at least two limiting grooves 321 are arranged on the second adjusting piece 32 along the length direction thereof; the second end of the first adjusting piece 31 is provided with a clamping protrusion 322 matched with the limiting grooves 321, and by arranging the first adjusting piece 31 and the second adjusting piece 32, the backrest frame 2 can be adjusted in multiple angles, and the user's comfort is further improved.

[0056] In the present embodiment, the angle adjustment assembly 3 is rotatably connected with the backrest frame 2, and in the case of the angle gap between the backrest frame 2 and the bed body frame 1, the distance between the first end of the first adjusting piece 31 and the first end of the second adjusting piece 32 is shortened, and the first adjusting piece 31 can be shortened relative to the second adjusting piece 32.

[0057] In some possible embodiments, the angle adjusting assembly 3 further comprises an elastic member, two sides of the elastic member are connected with the second end of the first adjusting member 31 and the first end of the second adjusting member 32 respectively, and by arranging the elastic member, the elastic member can drive the backrest frame 2 to move to the inner side of the bed body frame 1 to reset the backrest frame 2 after the external force is removed from the locking state of the backrest frame 2, and the rapid resetting of the backrest frame 2 is realized.

[0058] Specifically, in the case that the backrest frame 2 is in the supporting state, the elastic member is in the stretched state; in the case that the backrest frame 2 is in the folding state, the elastic member is in the original length or compressed state.

[0059] In the embodiment, the elastic member is a spring.

[0060] In some possible embodiments, the second adjusting member 32 is provided with a connecting groove 323 arranged along the length direction of the second adjusting member 32; the at least two limiting grooves 321 are in communication with the connecting groove 323, the limiting grooves 321 extend towards the second end of the second adjusting member 32, and the included angle between the limiting grooves 321 and the connecting groove 323 is an acute angle; by arranging the connecting groove 323, the clamping protrusion 322 arranged in the limiting groove 321 can move along the connecting groove 323 after moving out of the limiting groove 321, and the storage of the backrest frame 2 is realized; by arranging the limiting groove 321 and the connecting groove 323 which cooperate with each other, the angle adjustment and resetting of the backrest frame 2 can be realized without arranging a complex structure, and thus the manufacturing cost is reduced.

[0061] In the embodiment, the at least two limiting grooves 321 are arranged at intervals along the length of the connecting groove 323, and the at least two limiting grooves 321 are oblique tooth-shaped grooves.

[0062] In some possible embodiments, the bed body frame 1 is provided with at least two groups of first leg assemblies 4; the at least two groups of first leg assemblies 4 are fixedly or rotatably connected with the bed body frame 1 through the first locking assembly 5; by arranging the first leg assembly 4, the bed body frame 1 can be supported to lift the bed body frame 1, and by rotatably connecting the first leg assembly 4 with the bed body frame 1, the first leg assembly 4 can be folded and stored, the space occupied is reduced, and the use experience of the user is improved.

[0063] In the embodiment, the at least two groups of first leg assemblies 4 are arranged at intervals on the side of the bed body frame 1 facing the ground, and the at least two groups of first leg assemblies 4 are folded towards one side of the bed body frame 1.

[0064] In some possible embodiments, the bed body frame 1 comprises a first frame unit 11 and a second frame unit 12 connected in rotation; the bed body frame 1 further comprises a second leg assembly 6 arranged at a connection position of the first frame unit 11 and the second frame unit 12, and the first frame unit 11 and the second frame unit 12 can be folded towards the second leg assembly 6. By arranging the first frame unit 11 and the second frame unit 12 connected in rotation, the bed body frame 1 can be folded for storage, thereby avoiding occupying too much space and facilitating storage and transportation, and improving the user experience.

[0065] In some possible embodiments, the bed body frame comprises a first frame unit 11, a second frame unit 12, a third frame unit and a fourth frame unit connected in rotation; and the second frame unit 12 and the third frame unit are provided with a second leg assembly 6 at a connection position.

[0066] In some possible embodiments, the bed body frame 1 is provided with two groups of first leg assemblies 4; the second end of the first frame unit 11 is connected in rotation with the first end of the second frame unit 12; the first group of first leg assemblies 4 is arranged at the first end of the first frame unit 11, and the second group of second leg assemblies 6 is arranged at the second end of the second frame unit 12; when the folding bed is in a folded state, the second leg assembly 6 has a gap with the two groups of first leg assemblies 4. By arranging the two groups of first leg assemblies 4, the folding path can be optimized, and the folding thickness can be prevented from being too thick due to too many first leg assemblies 4, thereby avoiding occupying too much space and facilitating storage and transportation. Meanwhile, the second leg assembly 6 and the first leg assembly 4 have a gap after being folded, which can prevent interference after being folded, thereby further preventing the folding thickness from being too thick and avoiding occupying too much space.

[0067] Specifically, the two groups of first leg assemblies 4 are symmetrically arranged on the same side of the bed body frame 1.

[0068] In this embodiment, a sleeve is arranged on the second leg assembly 6, the sleeve is connected in sliding with the second leg assembly 6, and the two ends of the sleeve are connected in rotation with the frame unit through a connecting piece, specifically, one end of the sleeve is connected in rotation with the first end of the connecting piece, and the second end of the connecting piece is connected in rotation with the frame unit.

[0069] In some possible embodiments, along the length direction of the folding bed, the thickness of the first leg assembly 4 is the same as the thickness of the second leg assembly 6. By arranging the thickness of the first leg assembly 4 and the second leg assembly 6 to be the same and having a gap between the second leg assembly 6 and the first leg assembly 4, the width between the first frame unit 11 and the second frame unit 12 can be ensured to be only the thickness of the first leg assembly 4 or the thickness of the second leg assembly 6 when the folding bed is folded, thereby further preventing the thickness from being too thick after being folded, reducing the volume after being folded, and avoiding occupying too much space.

[0070] In some possible embodiments, the first locking assembly 5 comprises a first connecting rod 51, a second connecting rod 52, and a linkage clamping piece 53; the first connecting rod 51 is sleeved on the second connecting rod 52, one end of the first connecting rod 51 is rotationally connected with the bed body frame 1, and one end of the second connecting rod 52 is rotationally connected with the first leg assembly 4; the first connecting rod 51 can be clamped and fixed with the second connecting rod 52 through the linkage clamping piece 53, the relative fixation or relative sliding of the first connecting rod 51 and the second connecting rod 52 can be realized through the linkage clamping piece 53, and then the support and contraction of the first leg assembly 4 can be realized, and at the same time, the stability of the support of the first leg assembly 4 can be ensured through the locking of the first connecting rod 51 and the second connecting rod 52 by the linkage clamping piece 53.

[0071] In some possible embodiments, the first connecting rod 51 is provided with a first clamping groove 511, and the second connecting rod 52 is provided with at least one second clamping groove; the linkage clamping piece 53 comprises a clamping portion 531, a connecting portion 532, and a pushing portion 533 arranged in sequence, and the connecting portion 532 is rotationally connected with the first connecting rod 51 through a rotating shaft; the clamping portion 531 can be simultaneously clamped in the first clamping groove 511 and the second clamping groove, so as to fix the first connecting rod 51 and the second connecting rod 52; under the action of external force on the pushing portion 533, the clamping portion 531 is lifted up under the driving of the pushing portion 533 and can be moved out of the first clamping groove 511 and the second clamping groove, and the first connecting rod 51 and the second connecting rod 52 are in sliding connection; through the arrangement of the clamping portion 531, the connecting portion 532, and the pushing portion 533 capable of linkage operation, under the action of external force on the pushing portion 533, the connecting portion 532 can rotate around the rotating shaft, and then the clamping portion 531 can be moved out of the first clamping groove 511 and the second clamping groove, so as to realize the unlocking of the first connecting rod 51 and the second connecting rod 52, and thus the folding of the first leg assembly 4 can be quickly realized.

[0072] In the embodiment, the linkage clamping piece 53 is of a V-shaped structure, and can also be regarded as a seesaw structure; under the action of external force on the pushing portion 533, the pushing portion 533 moves towards the first connecting rod 51, and the clamping portion 531 is lifted up from the clamping groove, at this time, the clamping portion 531 does not limit the first connecting rod 51 and the second connecting rod 52, and the first connecting rod 51 and the second connecting rod 52 can relatively slide, so as to fold or unfold the first leg assembly 4.

[0073] In some possible embodiments, the first frame unit 11 is provided with a first clamping piece, and the second frame unit 12 is provided with a second clamping piece capable of clamping and cooperating with the first clamping piece; in the case that the folding bed is in a completely folded state, the first frame unit 11 and the second frame unit 12 are clamped and fixed through the first clamping piece and the second clamping piece, so as to avoid the scattering of the folding bed.

[0074] Specifically, the specific structure of the first clamping piece and the second clamping piece is not limited, as long as the first clamping piece and the second clamping piece can be matched with each other to fix the first frame unit 11 and the second frame unit 12.

[0075] The folding process of the folding bed with adjustable backrest: the operator unlocks the angle adjusting assembly 3, the backrest frame 2 is folded towards the bed body frame 1 and is stored inside the bed body frame 1, the operator pushes the pushing part 533 to unlock the first connecting rod 51 and the second connecting rod 52, and then folds the first supporting leg assembly 4, under the action of external force, the first frame unit 11 and the second frame unit 12 are both folded towards the second supporting leg assembly 6 to the bed body frame 1 in a completely folded state, at this time, the folding of the folding bed is completed.

[0076] Although the utility model has been described through preferred embodiments, the utility model is not limited to the embodiments described herein, and various changes and variations made without departing from the scope of the utility model.

[0077] In this paper, the front, back, up, down and other orientation words are defined by the position of the parts in the drawing and the position of the parts relative to each other in the drawing, just to express the technical scheme clearly and conveniently. It should be understood that the use of the orientation words should not limit the scope of the utility model claimed.

[0078] In the case of no conflict, the features of the above embodiments and the embodiments can be combined with each other.

[0079] The above disclosure is only a preferred embodiment of the utility model, of course, cannot limit the scope of the utility model, therefore, the equivalent changes made according to the utility model claims still belong to the scope covered by the utility model.

Claims

1. A folding bed with an adjustable backrest, characterized in that: include: A foldable bed frame (1); At least two groups of first leg assemblies (4) are provided on the bed frame (1); the at least two groups of first leg assemblies (4) are fixedly or rotationally connected to the bed frame (1) via a first locking assembly (5); the first locking assembly (5) comprises a first connecting rod (51), a second connecting rod (52) and a linkage clamping member (53); The first connecting rod (51) is sleeved on the second connecting rod (52), one end of the first connecting rod (51) is rotatably connected to the bed frame (1), and one end of the second connecting rod (52) is rotatably connected to the first leg assembly (4); the first connecting rod (51) can be fixedly connected to the second connecting rod (52) by the linkage clamping member (53); At least one set of backrest frames (2), comprising a connecting end and a supporting end arranged opposite to each other, the supporting end being arranged close to one end of the bed frame (1), and the connecting end being rotatably connected to the inner side of the bed frame (1); At least one set of angle adjustment components (3) for adjusting the angle between the bed frame (1) and the backrest frame (2), wherein a first end of the angle adjustment component (3) is rotatably connected to the inner side of the bed frame (1), and a second end of the angle adjustment component (3) is connected to the backrest frame (2); Under the action of an external force, the at least one set of angle adjustment components (3) and the backrest frame (2) can move to the inside of the bed frame (1).

2. The folding bed with adjustable backrest according to claim 1, characterized in that: The angle adjustment assembly (3) comprises a first adjustment member (31) and a second adjustment member (32); The second adjusting member (32) is sleeved on the first adjusting member (31), the first end of the second adjusting member (32) is rotatably connected to the inner side of the bed frame (1), and the first end of the first adjusting member (31) is rotatably connected to the backrest frame (2); At least two limiting grooves (321) are provided on the second adjusting member (32) along its length direction; The second end of the first adjusting member (31) is provided with a clamping protrusion (322) that matches the limiting groove (321).

3. The folding bed with adjustable backrest according to claim 2, characterized in that: The angle adjustment assembly (3) further comprises an elastic member, both sides of which are respectively connected to the second end of the first adjustment member (31) and the first end of the second adjustment member (32).

4. The folding bed with adjustable backrest according to claim 2, characterized in that: The second adjusting member (32) is provided with a connecting groove (323), and the connecting groove (323) is provided along the length direction of the second adjusting member (32); The at least two limiting grooves (321) are both connected to the connecting groove (323), the limiting groove (321) extends toward the second end of the second adjusting member (32), and the angle between the limiting groove (321) and the connecting groove (323) is an acute angle.

5. The folding bed with adjustable backrest according to claim 1, characterized in that: The bed frame (1) comprises a first frame unit (11) and a second frame unit (12) which are rotatably connected; The bed frame (1) further comprises a second leg assembly (6), wherein the second leg assembly (6) is arranged at a connection position between the first frame unit (11) and the second frame unit (12), and the first frame unit (11) and the second frame unit (12) are capable of folding toward the second leg assembly (6).

6. The folding bed with adjustable backrest according to claim 5, characterized in that: Two groups of the first leg assemblies (4) are provided on the bed frame (1); The second end of the first frame unit (11) is rotatably connected to the first end of the second frame unit (12); The first leg assembly (4) of the first group is arranged at the first end of the first frame unit (11), and the second leg assembly (6) of the second group is arranged at the second end of the second frame unit (12); When the folding bed is in a folded state, there is a gap between the second leg assembly (6) and the two groups of the first leg assemblies (4).

7. The folding bed with adjustable backrest according to claim 6, characterized in that: Along the length direction of the folding bed, the thickness of the first leg assembly (4) is the same as the thickness of the second leg assembly (6).

8. The folding bed with adjustable backrest according to claim 1, characterized in that: The first connecting rod (51) is provided with a first clamping groove (511), and the second connecting rod (52) is provided with at least one second clamping groove; The linkage clamping member (53) comprises a clamping portion (531), a connecting portion (532) and a pushing portion (533) which are sequentially arranged; the connecting portion (532) is rotatably connected to the first connecting rod (51) via a rotating shaft; the clamping portion (531) can be simultaneously positioned in the first clamping groove (511) and the second clamping groove to fix the first connecting rod (51) and the second connecting rod (52); When the pushing portion (533) is acted upon by an external force, the clamping portion (531) is tilted up by the pushing portion (533) and can be moved out of the first clamping slot (511) and the second clamping slot, and the first connecting rod (51) and the second connecting rod (52) are slidably connected.

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