Folding sofa bed convenient to store

Abstract

The utility model relates to the technical field of sofa beds, in particular to a folding sofa bed convenient to store, which comprises a backrest part and the like, the backrest part, the cushion part and the leg leaning part all comprise sponges and frameworks, the sponges are installed on the frameworks, the head side and the tail side of the cushion part are rotationally connected with the backrest part and the leg leaning part respectively, an inclination adjusting assembly for adjusting the inclination degree of the backrest part is arranged between the cushion part and the backrest part, and supporting legs are symmetrically arranged on the tail side of the leg leaning part. When the sofa bed is used as a sofa, supporting acting force is provided for the front part of the cushion part through the leg leaning part and the supporting legs. After the T-shaped rod is connected with the H-shaped supporting frame, the H-shaped supporting frame and the leg leaning part form a splayed structure, the H-shaped supporting frame and the leg leaning part are effectively connected through the telescopic rod, and meanwhile through the telescopic function of the telescopic rod, the distance between the H-shaped supporting frame and the leg leaning part and the inclination angle of the H-shaped supporting frame are adjusted. The stability of the sofa bed is improved; the application range is expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of sofa beds, in particular to a foldable and conveniently foldable sofa bed. Background Art

[0002] A sofa bed is a type of sofa that can be used as a seat and can also be transformed into a bed for people to lie down and rest.

[0003] The Chinese utility model patent with publication number CN213487949U discloses a foldable portable sofa bed, including a backrest device consisting of a backrest member, a storage slot and a first built-in slide, a storage support device is provided inside the storage slot, the storage support device consists of a storage box, a first pulley and a support member, armrest devices are symmetrically provided on both sides of the backrest member, the armrest device consists of a main armrest member, a second built-in slide, a screw hole and a transport pulley, a folding cushion device is provided in the middle of the main armrest member, a second pulley is provided at one end of the sofa soft bag, a first connecting plate is provided at a position corresponding to the second pulley inside the sofa soft bag, one end of the first connecting plate is connected to the first rotating shaft, one end of the second connecting plate is connected to the first rotating shaft, the other end of the second connecting plate is connected to the second rotating shaft, and one end of the third connecting plate is connected to the second rotating shaft.

[0004] The defects of the foldable portable sofa bed in the above patent are: first, the scope of application of the above device is mainly indoor flat ground, and it is not suitable for outdoor sandy places; second, because the armrest device and the backrest part of the device are fixedly connected, the backrest angle of the foldable sofa bed cannot be adjusted when it is used as a sofa.

[0005] Based on the above defects, it is necessary to design a foldable and conveniently stored sofa bed with a wide range of applications and an adjustable backrest angle. Utility Model Content

[0006] A foldable and conveniently foldable sofa bed comprises a backrest, a seat cushion, a legrest, support legs, a tilt adjustment assembly and an adjustable support assembly. The front and rear sides of the seat cushion are rotatably connected with the backrest and the legrest, respectively. A tilt adjustment assembly for adjusting the tilt of the backrest is arranged between the seat cushion and the backrest, and the support legs are symmetrically arranged on the rear side of the legrest. When the sofa bed is used as a sofa, the legrest and the support legs provide a supporting force for the front of the seat cushion, and the bottom of the seat cushion is movably provided with an adjustable support assembly for providing a supporting force for the rear of the seat cushion.

[0007] Furthermore, the backrest portion and the legrest portion can both rotate 180 degrees with the rotation connection between the backrest portion and the seat cushion portion as the center.

[0008] Furthermore, the adjustable support assembly includes a T-rod, an H-shaped support frame, a telescopic rod and a fixed screw. The T-rods are symmetrically rotatably connected to the side walls of the seat cushion part on both sides other than the front and rear sides. The two T-rods are slidably connected to the H-shaped support frame. The H-shaped support frame is rotatably connected to the telescopic rod. The movable end of the telescopic rod is movably connected to the fixed screw threadedly connected to the side wall of the leg rest part.

[0009] Furthermore, the tilt adjustment assembly includes an adjustment rod, an adjustment plate 1, an adjustment plate 2 and an insertion rod. No less than two adjustment rods are evenly spaced on the two side walls of the cushion part that are not on the front and rear sides. Adjustment plate 1 is rotatably connected to the two side walls of the backrest part. Adjustment plate 2 is slidably connected to adjustment plate 1. No less than two circular through holes are provided on adjustment plate 2. The circular through hole at the lower end of adjustment plate 2 is movably connected to the adjustment rod. An insertion rod is movably provided on adjustment plate 1 and can pass through the circular through hole on adjustment plate 2.

[0010] Furthermore, a curved connection block is movably provided at the connection between the leg rest portion and the seat cushion portion.

[0011] Furthermore, a U-shaped clamping rod is movably connected to the curved connection block. When the curved connection block is installed on the support leg, the curved connection block is fixed on the support leg by passing the U-shaped clamping rod through the curved connection block and inserting it into a circular groove opened on the support leg.

[0012] Furthermore, it also includes a first strap, a fourth strap, a second strap and a third strap. The first strap is provided on the side of the backrest portion opposite to the seat cushion portion, the second strap is provided on the side where the seat cushion portion is connected to the backrest portion, and the third strap is provided on the H-shaped support frame. After the telescopic rod is separated from the fixing screw, the third strap is used to tie the telescopic rod to the H-shaped support frame, and both sides of the backrest portion provided with an adjustment plate 1 are connected to a fourth strap for storing the adjustment plate 1 and the adjustment plate 2.

[0013] Furthermore, a connecting cushion is provided between the seat cushion portion and the backrest portion.

[0014] The beneficial effects of the utility model are as follows: 1. After the T-shaped rod is connected to the H-shaped support frame, the H-shaped support frame and the leg rest portion form an "eight"-shaped structure, and the H-shaped support frame and the leg rest portion are effectively connected by the telescopic rod. At the same time, through the telescopic function of the telescopic rod, the distance between the H-shaped support frame and the leg rest portion and the inclination angle of the H-shaped support frame can be adjusted, so that the H-shaped support frame can be adjusted according to the conditions of the use site, thereby improving the stability of the sofa bed when in use and increasing the scope of use.

[0015] 2. Slide the adjustment plate 2 down to the lowest end of the adjustment plate 1 and fix it through the insertion rod. By connecting the adjustment plate 2 with different adjustment rods and rotating the backrest at the same time, the inclination of the backrest can be adjusted according to the needs of the user, thereby adjusting the backrest and improving the user experience.

[0016] 3. After rotating the backrest of the backrest to just above the cushion part, connect the backrest part and the cushion part through the first strap; after rotating the back of the legrest part to just below the cushion part, connect the legrest part and the cushion part through the second strap, so as to achieve convenient folding of the storage bed; tie the telescopic rod to the H-shaped support frame through the third strap, and tie the adjustment plate to the cushion frame through the fourth strap, so as to achieve convenient storage and folding of the sofa bed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0018] Figure 2 The utility model is a three-dimensional structural schematic diagram of some parts such as a cushion part, a leg rest part and a curved surface connecting block when the sofa bed is used as a sofa.

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the curved connecting block of the utility model being inserted into the supporting leg.

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the curved surface connecting block and the U-shaped clamping rod of the utility model.

[0021] Figure 5 The utility model is a three-dimensional structural schematic diagram of a backrest part, a seat cushion part and a tilt adjustment component when the sofa bed is used as a sofa.

[0022] In the above figures: 1: backrest part, 11: first strap, 12: fourth strap, 2: cushion part, 20: connecting cushion, 21: second strap, 22: adjustment rod, 3: leg rest part, 4: curved connecting block, 41: U-shaped rod, 5: supporting leg, 6: T-shaped rod, 7: H-shaped support frame, 71: third strap, 8: telescopic rod, 81: fixing screw, 9: tilt adjustment assembly, 91: adjustment plate one, 92: adjustment plate two, 93: insertion rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment: A foldable and conveniently foldable sofa bed, such as Figure 1 and Figure 2 As shown, it includes a backrest portion 1, a seat cushion portion 2, a leg rest portion 3, a support leg 5, a tilt adjustment component 9 and an adjustable support component. The backrest portion 1, the seat cushion portion 2 and the leg rest portion 3 all include sponges and frames, and the sponges are installed on the frames. The front and rear sides of the seat cushion portion 2 are rotatably connected with the backrest portion 1 and the leg rest portion 3 respectively. The backrest portion 1 and the leg rest portion 3 can both rotate 180 degrees with the rotation connection between them and the seat cushion portion 2 as the center. A connecting cushion 20 is arranged between the seat cushion portion 2 and the backrest portion 1. A tilt adjustment component 9 for adjusting the inclination of the backrest portion 1 is arranged between the seat cushion portion 2 and the backrest portion 1. The rear side of the leg rest portion 3 is symmetrically provided with support legs 5. When the sofa bed is used as a sofa, the leg rest portion 3 and the support legs 5 provide a supporting force for the front part of the seat cushion portion 2, and an adjustable support component for providing a supporting force for the rear part of the seat cushion portion 2 is movably arranged at the bottom of the seat cushion portion 2.

[0025] Figure 2 As shown, the adjustable support assembly includes a T-shaped rod 6, an H-shaped support frame 7, a telescopic rod 8 and a fixed screw 81. The right parts of the front and rear sides of the cushion part 2 are symmetrically rotatably connected with the T-shaped rod 6. The T-shaped rod 6 is close to the direction of the backrest part 1, and the two T-shaped rods 6 are slidably connected with the H-shaped support frame 7. The telescopic rod 8 is rotatably connected to the H-shaped support frame 7. The movable end of the telescopic rod 8 is movably connected to the fixed screw 81 threadedly connected to the side wall of the leg rest part 3. The H-shaped support frame 7 and the leg rest part 3 form an "eight"-shaped structure. The distance between the H-shaped support frame 7 and the leg rest part 3 is adjusted by the telescopic rod 8, and the inclination of the H-shaped support frame 7 is also adjusted, so that the H-shaped support frame 7 can be flexibly adjusted according to the conditions of the use site, thereby improving the stability and practicality of the sofa bed.

[0026] Figure 5 As shown, the tilt adjustment assembly 9 includes an adjustment rod 22, an adjustment plate 1 91, an adjustment plate 2 92 and an insertion rod 93. Six adjustment rods 22 are evenly spaced on the front and rear side walls of the cushion portion 2. The front and rear side walls of the backrest portion 1 are rotatably connected with an adjustment plate 1 91. An adjustment plate 2 92 is slidably connected to the adjustment plate 1 91. No less than three circular through holes are provided on the adjustment plate 2 92. The circular through hole at the lower end of the adjustment plate 2 92 is detachably connected to the adjustment rod 22. An insertion rod 93 that can pass through the circular through hole on the adjustment plate 2 92 is detachably provided on the adjustment plate 1 91. The insertion rod 93 is inserted into the circular through hole on the adjustment plate 2 92 to fix the adjustment plate 2 92 to the adjustment plate 1 91.

[0027] Figure 2 , Figure 3 and Figure 4As shown, a curved connection block 4 is movably provided at the connection between the leg rest portion 3 and the seat cushion portion 2, and a U-shaped clamping rod 41 is movably connected to the curved connection block 4. When the curved connection block 4 is installed on the supporting leg 5, the curved connection block 4 is fixed on the supporting leg 5 by passing the U-shaped clamping rod 41 through the curved connection block 4 and inserting it into a circular groove provided on the supporting leg 5.

[0028] Figure 2 and Figure 5 As shown, it also includes a first strap 11, a fourth strap 12, a second strap 21 and a third strap 71. The first strap 11 is provided on the side opposite to the backrest portion 1 and the cushion portion 2. The first strap 11 is used to tie and fix the backrest portion 1 and the cushion portion 2 when the backrest portion 1 is rotated to just above the cushion portion 2. The second strap 21 is provided on the side where the cushion portion 2 is connected to the backrest portion 1. The second strap 21 is used to tie and fix the leg rest portion 3 and the cushion portion 2 after the leg rest portion 3 is rotated to just below the cushion portion 2. The third strap 71 is provided on the H-shaped support frame 7. After the telescopic rod 8 is separated from the fixing screw 81, the third strap 71 is used to tie the telescopic rod 8 to the H-shaped support frame 7. The backrest portion 1 is provided with an adjustment plate 91 on both sides of which are connected the fourth strap 12 for storing the adjustment plate 91 and the adjustment plate 92.

[0029] When the sofa bed is used as a sofa, the leg rest portion 3 and the support leg 5 provide support for the front of the cushion portion 2, and the curved connecting block 4 is clamped between the front of the cushion portion 2 and the top of the leg rest portion 3 (such as Figure 3 As shown in the figure), the connection between the seat cushion part 2 and the leg rest part 3 is set as a curved surface, so as to provide support for the key part of the user's legs, thereby improving the user's comfort; by inserting the lower part of the T-shaped rod 6 into the upper part of the H-shaped support frame 7, the T-shaped rod 6 is rotated to adjust the inclination angle between the H-shaped support frame 7 and the seat cushion part 2, so that the H-shaped support frame 7 and the leg rest part 3 form an "eight" shape structure, and at the same time, the H-shaped support frame 7 and the leg rest part 3 are effectively connected by the telescopic rod 8, and the telescopic function of the telescopic rod 8 is used to adjust the distance between the H-shaped support frame 7 and the leg rest part 3, so that the H-shaped support frame 7 can be adjusted according to the situation of the use site. The frame 7 is adjusted to improve the stability of the sofa bed when in use; the adjustment plate 2 92 is slid from the upper end of the inner cavity of the adjustment plate 1 91 to the lower end of the adjustment plate 1 91, and then the insertion rod 93 is inserted into the circular through hole at the upper end of the adjustment plate 2 92, thereby fixing the adjustment plate 2 92 and making the length value of the adjustment plate 1 91 and the adjustment plate 2 92 reach the maximum. At this time, the circular through hole at the lower end of the adjustment plate 2 92 is connected to different adjustment clamping rods 22 according to the needs of the user, so as to adjust the inclination of the backrest part 1 according to the needs of the user; in this way, the function of the sofa bed for a sofa is realized, and it has the advantages of adjustable backrest angle and wide adaptability.

[0030] When the sofa bed is used as a bed: separate the telescopic rod 8 from the fixing screw 81, separate the H-shaped support frame 7 from the T-shaped rod 6, place the curved connection block 4 on the supporting leg 5 and clamp it through the profile clamp rod, separate the adjustment plate 2 92 from the adjustment clamp rod 22, and then rotate the backrest part 1 and the legrest part 3 to be flush with the cushion part 2. At this time, the sofa bed can be placed flat on the horizontal ground and used as a bed.

[0031] When the sofa bed needs to be stored: after the adjustment plate 2 92 is separated from the adjustment card rod 22, the adjustment plate 2 92 is slid upward to the uppermost end along the adjustment plate 1 91, and the insertion rod 93 is inserted into the circular through hole at the lower end of the adjustment plate 2 92, thereby realizing the folding of the adjustment plate 2 92. At this time, the adjustment plate 1 91 is tied by the fourth strap 12, so as to realize the effect of storing and fixing the adjustment plate 1 91 and the adjustment plate; then, the backrest side of the backrest part 1 is rotated to the top of the cushion part 2 through the backrest part 1, so that the sponge of the backrest part 1 is attached to the upper part of the sponge of the cushion part 2, and the backrest part 1 and the cushion part 2 are fixed by the first strap 11; the leg rest part 3 is rotated to the bottom of the cushion part 2 by rotating the leg rest part 3, the skeleton side of the leg rest part 3 is attached to the skeleton side of the bottom side of the cushion part 2, and the leg rest part 3 is connected and fixed to the cushion part 2 by the second strap 21, thereby the sofa bed is conveniently folded and stored.

[0032] Although the present invention has been described with reference to exemplary embodiments, it should be understood that the present invention is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all modifications and equivalent structures and functions.

Claims

1. A foldable and conveniently foldable sofa bed, comprising a backrest portion (1), a seat cushion portion (2), a leg rest portion (3) and a support leg (5), wherein the front and rear sides of the seat cushion portion (2) are rotatably connected to the backrest portion (1) and the leg rest portion (3), and the rear side of the leg rest portion (3) is symmetrically provided with a support leg (5), wherein: The sofa bed also comprises an inclination adjustment component (9) and an adjustable support component. The inclination adjustment component (9) for adjusting the inclination of the backrest portion (1) is arranged between the seat cushion portion (2) and the backrest portion (1). When the sofa bed is used as a sofa, the leg rest portion (3) and the support legs (5) provide a support force for the front of the seat cushion portion (2). The bottom of the seat cushion portion (2) is movably provided with an adjustable support component for providing a support force for the rear of the seat cushion portion (2).

2. A foldable and conveniently foldable sofa bed according to claim 1, characterized in that: The backrest part (1) and the legrest part (3) can both rotate 180 degrees with the rotation connection point between the backrest part (1) and the seat cushion part (2) as the center.

3. A foldable and conveniently foldable sofa bed according to claim 1, characterized in that: The adjustable support assembly comprises a T-shaped rod (6), an H-shaped support frame (7), a telescopic rod (8) and a fixed screw (81); the side walls of the cushion portion (2) at two non-front and rear sides are symmetrically rotatably connected with the T-shaped rod (6); the two T-shaped rods (6) are slidably connected with the H-shaped support frame (7); the H-shaped support frame (7) is rotatably connected with the telescopic rod (8); the movable end of the telescopic rod (8) is movably connected with the fixed screw (81) threadedly connected to the side wall of the leg support portion (3).

4. A foldable and conveniently foldable sofa bed according to claim 3, characterized in that: The tilt adjustment assembly (9) comprises an adjustment rod (22), an adjustment plate 1 (91), an adjustment plate 2 (92) and an insertion rod (93). At least two adjustment rods (22) are evenly spaced on the side walls of the cushion portion (2) at non-front and rear sides. The side walls of the backrest portion (1) are rotatably connected to the adjustment plate 1 (91). The adjustment plate 1 (91) is slidably connected to the adjustment plate 2 (92). At least two circular through holes are provided on the adjustment plate 2 (92). The circular through hole at the bottom end of the adjustment plate 2 (92) is movably connected to the adjustment rod (22). The adjustment plate 1 (91) is movably provided with an insertion rod (93) that can pass through the circular through hole on the adjustment plate 2 (92).

5. A foldable and conveniently foldable sofa bed according to claim 1, characterized in that: A curved surface connection block (4) is movably provided at the connection between the leg rest portion (3) and the seat cushion portion (2).

6. A foldable and conveniently foldable sofa bed according to claim 5, characterized in that: A U-shaped clamping rod (41) is movably connected to the curved surface connection block (4). When the curved surface connection block (4) is mounted on the support leg (5), the curved surface connection block (4) is fixed to the support leg (5) by passing the U-shaped clamping rod (41) through the curved surface connection block (4) and inserting it into a circular groove provided on the support leg (5).

7. A foldable and conveniently foldable sofa bed according to claim 4, characterized in that: The invention also comprises a first binding strap (11), a fourth binding strap (12), a second binding strap (21) and a third binding strap (71); the first binding strap (11) is arranged on the side of the backrest portion (1) opposite to the cushion portion (2); the second binding strap (21) is arranged on the side of the cushion portion (2) connected to the backrest portion (1); the third binding strap (71) is arranged on the H-shaped support frame (7); after the telescopic rod (8) is separated from the fixing screw rod (81), the backrest portion (1) is provided with an adjustment plate 1 (91) on both sides thereof, and the fourth binding strap (12) is connected to store the adjustment plate 1 (91) and the adjustment plate 2 (92).

8. A foldable and conveniently foldable sofa bed according to claim 1, characterized in that: A connecting cushion (20) is provided between the seat cushion portion (2) and the backrest portion (1).

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