Double-layer sofa bed

Abstract

The utility model discloses a double-layer sofa bed which comprises a sofa base, four supporting legs are distributed at the lower end of the sofa base in a rectangular mode, a sofa body is arranged above the sofa base in a separated mode and comprises a cushion, and armrests and a backrest are fixedly arranged on the left side, the right side and the rear end of the cushion respectively. A lifting mechanism connected with the sofa body is arranged at each of four corners of the sofa base, each lifting mechanism comprises a first hydraulic cylinder and a second hydraulic cylinder, each first hydraulic cylinder is mounted on the sofa base, an output shaft of each first hydraulic cylinder extends upwards and is provided with a mounting frame, and each second hydraulic cylinder is mounted on the mounting frame; according to the multifunctional sofa, when the sofa is changed into a bed for two persons to have a rest, the floor area is not occupied, so that the activity space in a room is not reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sofas, in particular to a double-layer sofa bed. Background Art

[0002] Sofa beds have the structures and functions of both sofas and beds, and can be converted. They are usually in the form of sofas. When there are guests at home and there are not enough beds, the sofa can be converted into a bed structure for sleeping and resting. Generally, the length of a sofa is enough for one person to lie down and rest, but when there are two people, the sofa needs to be changed into a bed.

[0003] In the prior art, the utility model patent of "a folding sofa bed" with patent number "CN105996555B" records: including a sofa seat with a placement slot inside and a folding bed that can be folded inside the sofa seat, a cushion that can cover the sofa seat is hinged on the sofa seat, two sides of one end of the folding bed are respectively connected to the inside of the sofa seat through two hinged rods, and the two ends of the two hinged rods are respectively hinged to the sofa seat and the folding bed to form a quadrilateral structure, and the cushion includes a first flap that is hinged to one side of the sofa seat and flipped 90 degrees vertically, and the bottom is pressed against the sofa seat to be fixed, and a second flap that is hinged to the other end of the first flap and flipped, and the free end of the second flap is pressed against one end of the nearby folding bed. After unfolding, the folding sofa bed will be well fixed relative to the end hinged to the hinged rod. When a person lies on the folding bed to sleep, the folding bed is not easy to fold automatically, making it safer for people to sleep on the folding bed.

[0004] However, the above-mentioned patent increases the floor space when the sofa is unfolded into a bed, so it is very inconvenient to convert the sofa into a bed in a small space. Utility Model Content

[0005] In order to solve the above-mentioned deficiencies in the prior art, the utility model provides a double-layer sofa bed.

[0006] In order to achieve the above technical effects, the utility model adopts the following scheme:

[0007] A double-layer sofa bed comprises a sofa base, the lower end of the sofa base is rectangular with four supporting legs, a sofa body is separately arranged above the sofa base, the sofa body comprises a seat cushion, armrests and a backrest are respectively fixedly arranged on the left and right sides and the rear end of the seat cushion, a lifting mechanism connected to the sofa body is provided at each of the four corners of the sofa base, the lifting mechanism comprises a first hydraulic cylinder and a second hydraulic cylinder, the first hydraulic cylinder is installed on the sofa base, the output shaft of the first hydraulic cylinder extends upward and is provided with a mounting frame, the second hydraulic cylinder is installed on the mounting frame, the output shaft of the second hydraulic cylinder extends upward and is fixedly connected to the sofa body.

[0008] A preferred technical solution is that the upper end of the sofa base extends downward to be provided with a lower socket, the lower end of the sofa body extends upward to be provided with an upper socket extending into the armrest, the upper socket corresponds to the position of the lower socket, a support tube is matched and inserted into the lower socket, the support tube is fixed in the lower socket, the upper end of the support tube is matched and inserted into the upper socket for sliding, the upper and lower ends of the support tube are through-set, the first hydraulic cylinder and the second hydraulic cylinder are both provided in the support tube, the first hydraulic cylinder is installed at the bottom of the lower socket, and the output shaft of the second hydraulic cylinder extends out of the upper end of the support tube and is fixedly connected to the upper end of the upper socket.

[0009] According to a preferred technical solution, a sliding telescopic tube is matched inside the support tube, and the upper end of the telescopic tube extends upward from the support tube and is fixedly connected to the upper end of the upper plug hole.

[0010] A preferred technical solution is that the mounting frame includes a mounting plate, the bottom of the second hydraulic cylinder is mounted on the upper end of the mounting plate, the output shaft of the first hydraulic cylinder is fixedly connected to the lower end of the mounting plate, a fixing plate is fixedly provided at the front end of the first hydraulic cylinder, the fixing plate has a center hole for the output shaft of the first hydraulic cylinder to pass through, at least three guide rods evenly distributed around the center hole are fixedly provided on the fixing plate, the guide rods are vertically arranged, and the mounting plate has guide holes that cooperate with the guide rods.

[0011] The preferred technical solution is that a protective structure is further provided between the sofa base and the sofa body, the protective structure is located below the armrest, the protective structure includes a first connecting rod and a second connecting rod, the upper end of the sofa base is provided with a first strip groove for hiding the first connecting rod, the length direction of the first strip groove is arranged along the front-back direction, the two ends of the first connecting rod are respectively set as aⅠ end and bⅠ end, the aⅠ end of the first connecting rod is hinged in the first strip groove, the lower end of the sofa body is provided with a second strip groove for hiding the second connecting rod, the second strip groove and the first Corresponding to a strip groove, the two ends of the second connecting rod are respectively set as aⅡ end and bⅡ end, the aⅡ end of the second connecting rod is hinged in the second strip groove, the bⅡ end of the first connecting rod is hinged between the aⅠ end and the bⅠ end of the second connecting rod, the aⅠ end and the aⅡ end are located on the same vertical line, the second connecting rod is provided with a second pin hole located between the bⅠ end and the aⅡ end, the first connecting rod is provided with a first pin hole corresponding to the second pin hole, when the second connecting rod and the first connecting rod are rotated to be located on the same vertical line, the first pin hole overlaps with the second pin hole and is passed through by a pin.

[0012] Compared with the prior art, the beneficial effects are:

[0013] The utility model has a simple structure and is easy to use. The four corners of the sofa base and the sofa body are connected through a first hydraulic cylinder and a second hydraulic cylinder that are connected together. When two people need to sleep and rest, the first hydraulic cylinder and the second hydraulic cylinder are started to lift the sofa body upward away from the sofa base, thereby forming two positions on the sofa body surface and the sofa base surface for two people to rest. Through the utility model, when the sofa is transformed into a bed for two people to rest, the ground area will not be occupied, thereby not reducing the activity space in the room. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view structural diagram of the utility model;

[0015] Figure 2 It is a front view structural schematic diagram of the sofa base and the sofa body of the utility model in a state of being separated;

[0016] Figure 3 It is a side view structural schematic diagram of the utility model;

[0017] Figure 4 It is a side view structural schematic diagram of the sofa base and the sofa body of the utility model in a state of being separated;

[0018] Figure 5 It is a schematic diagram of the connection between the first connecting rod and the second connecting rod in the utility model;

[0019] Figure 6 It is a schematic diagram of the positional relationship between the first hydraulic cylinder and the second hydraulic cylinder when the sofa base and the sofa body are separated in the utility model.

[0020] Attached figures: 1. sofa base; 2. sofa body; 3. seat cushion; 4. armrest; 5. backrest; 6. lower plug hole; 7. upper plug hole; 8. support tube; 9. telescopic tube; 10. first hydraulic cylinder; 11. second hydraulic cylinder; 12. fixing plate; 13. mounting plate; 14. guide rod; 15. first strip groove; 16. second strip groove; 17. first connecting rod; 18. second connecting rod; 19. first pin hole; 20. latch; 21. aⅠ end; 22. bⅠ end; 23. aⅡ end; 24. bⅡ end. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] A double-layer sofa bed comprises a sofa base 1, the lower end of the sofa base 1 is rectangular with four legs, the upper end surface of the sofa base 1 is a horizontal plane, a sofa body 2 is separately provided above the sofa base 1, in a natural state, the sofa body 2 is supported on the upper end of the sofa base 1 and is combined into a sofa, the sofa body 2 comprises a seat cushion 3, the left and right sides and the rear end of the seat cushion 3 are respectively fixed with armrests 4 and a backrest 5, and the designs of the seat cushion 3, the armrests 4 and the back cushion are all prior art;

[0023] A lifting mechanism connected to the sofa body 2 is provided at each of the four corners of the sofa base 1, and the sofa body 2 is lifted up from the sofa base 1 by the lifting mechanism. The lifting mechanism includes a first hydraulic cylinder 10 and a second hydraulic cylinder 11. The first hydraulic cylinder 10 is installed on the sofa base 1, and the output shaft of the first hydraulic cylinder 10 extends upward and is provided with a mounting frame. The second hydraulic cylinder 11 is installed on the mounting frame. The second hydraulic cylinder 11 is fixedly installed at the end of the output shaft of the first hydraulic cylinder 10 through the mounting frame. The output shaft of the second hydraulic cylinder 11 extends upward and is fixedly connected to the sofa body 2. The sofa body 2 is lifted up by the first hydraulic cylinder 10 and the second hydraulic cylinder 11, and two hydraulic cylinders are provided to increase the lifting stroke.

[0024] The four corners of the sofa base 1 and the sofa body 2 are connected by a first hydraulic cylinder 10 and a second hydraulic cylinder 11 connected together. When two people need to sleep and rest, the first hydraulic cylinder 10 and the second hydraulic cylinder 11 are started to push the sofa body 2 upward away from the sofa base 1, thereby forming two positions on the surface of the sofa body 2 and the surface of the sofa base 1 for two people to rest. Through the utility model, when the sofa is transformed into a bed for two people to rest, it will not occupy the ground area, thereby not reducing the activity space in the room.

[0025] Furthermore, a lower socket 6 is extended downward from the upper end of the sofa base 1, and an upper socket 7 is extended upward from the lower end of the sofa body 2 and extends into the armrest 4. The upper socket 7 corresponds to the position of the lower socket 6, and a support tube 8 is inserted into the lower socket 6. The support tube 8 is fixed in the lower socket 6, and the upper end of the support tube 8 is inserted into the upper socket 7 for sliding. The upper and lower ends of the support tube 8 are through-set, and the first hydraulic cylinder 10 and the second hydraulic cylinder 11 are both arranged in the support tube 8. The first hydraulic cylinder 10 is installed at the bottom of the lower socket 6, and the output shaft of the second hydraulic cylinder 11 extends out of the upper end of the support tube 8 and is fixedly connected to the upper end of the upper socket 7.

[0026] The first hydraulic cylinder 10 and the second hydraulic cylinder 11 are arranged through the above structure to avoid obstruction of the sofa body 2 placed on the sofa base 1; in addition, the first hydraulic cylinder 10 and the second hydraulic cylinder 11 are arranged in the support tube 8, and the support tube 8 forms an outer shell.

[0027] Furthermore, a sliding telescopic tube 9 is matched inside the support tube 8 , and the upper end of the telescopic tube 9 extends upward from the support tube 8 and is fixedly connected to the upper end of the upper insertion hole 7 .

[0028] The support tube 8 is fixed on the sofa base 1, and the telescopic tube 9 is fixed on the sofa body 2. When the sofa body 2 is raised, the telescopic tube 9 slides out in the support tube 8. Through the coordinated connection between the support tube 8 and the telescopic tube 9, a limiting structure is formed to reduce the left and right shaking of the sofa body 2 after it is raised.

[0029] Furthermore, the mounting frame includes a mounting plate 13, the bottom of the second hydraulic cylinder 11 is mounted on the upper end of the mounting plate 13, the output shaft of the first hydraulic cylinder 10 is fixedly connected to the lower end of the mounting plate 13, and a fixing plate 12 is fixedly arranged at the front end of the first hydraulic cylinder 10, the fixing plate 12 has a center hole for the output shaft of the first hydraulic cylinder 10 to pass through, and at least three guide rods 14 evenly distributed around the center hole are fixedly arranged on the fixing plate 12, the guide rods 14 are vertically arranged, and the mounting plate 13 has a guide hole that cooperates with the guide rods 14.

[0030] Furthermore, a protective structure is provided between the sofa base 1 and the sofa body 2, the protective structure is located below the armrest 4, the protective structure includes a first connecting rod 17 and a second connecting rod 18, the upper end of the sofa base 1 is provided with a first strip groove 15 for hiding the first connecting rod 17, the length direction of the first strip groove 15 is arranged along the front-back direction, the two ends of the first connecting rod 17 are respectively set as aⅠ end 21 and bⅠ end 22, the aⅠ end 21 of the first connecting rod 17 is hinged in the first strip groove 15, the lower end of the sofa body 2 is provided with a second strip groove 16 for hiding the second connecting rod 18, the second strip groove 16 corresponds to the first strip groove 15 The two ends of the second connecting rod 18 are respectively set as an aⅡ end 23 and a bⅡ end 24, the aⅡ end 23 of the second connecting rod 18 is hinged in the second strip groove 16, and the bⅡ end 24 of the first connecting rod 17 is hinged between the aⅠ end 21 and the bⅠ end 22 of the second connecting rod 18, and the aⅠ end 21 and the aⅡ end 23 are located on the same vertical line. The second connecting rod 18 is provided with a second pin hole located between the bⅠ end 22 and the aⅡ end 23, and the first connecting rod 17 is provided with a first pin hole 19 corresponding to the second pin hole. When the second connecting rod 18 and the first connecting rod 17 are rotated to be located on the same vertical line, the first pin hole 19 overlaps with the second pin hole and is passed through by a pin 20.

[0031] After the sofa body 2 is raised, if the first hydraulic cylinder 10 and the second hydraulic cylinder 11 are damaged and the pressure is released, causing the sofa body 2 to fall downward, the protective structure will prevent the sofa body 2 from falling. During the rising process of the sofa body 2, the first connecting rod 17 and the second connecting rod 18 will be driven to rotate until the sofa body 2 rises to the top. Since the aⅠ end 21 and the aⅡ end 23 are located on the same vertical line, the first connecting rod 17 and the second connecting rod 18 will rotate to be vertically located on the same vertical line. At this time, the first pin hole 19 overlaps with the second pin hole, and the plug 2 is inserted into the first pin hole 19 and the second pin hole. 0, thereby preventing the first connecting rod 17 and the second connecting rod 18 from rotating, so that the first connecting rod 17 and the second connecting rod 18 remain vertically pressed between the sofa base 1 and the sofa body 2. When the first hydraulic cylinder 10 and the second hydraulic cylinder 11 lose power, the sofa body 2 is prevented from falling due to the presence of the first connecting rod 17 and the second connecting rod 18. Preferably, at least four protective structures are provided between the sofa base 1 and the sofa body 2, and the at least four protective structures are respectively located at both ends of the sofa base 1 and are staggered. After the sofa body 2 rises, the protective structure can form multi-point support.

[0032] In the description of the present utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present utility model.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

Claims

1. A double-layer sofa bed, characterized in that: The sofa base (1) comprises a sofa base (1), the lower end of which is provided with four supporting legs in a rectangular shape, a sofa body (2) being separately provided above the sofa base (1), the sofa body (2) comprising a seat cushion (3), armrests (4) and a backrest (5) being fixedly provided on the left and right sides and the rear end of the seat cushion (3), a lifting mechanism connected to the sofa body (2) being provided at each of the four corners of the sofa base (1), the lifting mechanism comprising a first hydraulic cylinder (10) and a second hydraulic cylinder (11), the first hydraulic cylinder (10) being installed on the sofa base (1), the output shaft of the first hydraulic cylinder (10) extending upward and being provided with a mounting frame, the second hydraulic cylinder (11) being installed on the mounting frame, the output shaft of the second hydraulic cylinder (11) extending upward and being fixedly connected to the sofa body (2).

2. The double-layer sofa bed according to claim 1, characterized in that: The upper end of the sofa base (1) extends downward and is provided with a lower plug hole (6); the lower end of the sofa body (2) extends upward and is provided with an upper plug hole (7) extending into the armrest (4); the upper plug hole (7) corresponds to the position of the lower plug hole (6); a support tube (8) is matched and inserted into the lower plug hole (6); the support tube (8) is fixedly arranged in the lower plug hole (6); the upper end of the support tube (8) is matched and inserted into the upper plug hole (7) for sliding arrangement; the upper and lower ends of the support tube (8) are through-arranged; the first hydraulic cylinder (10) and the second hydraulic cylinder (11) are both arranged in the support tube (8); the first hydraulic cylinder (10) is installed at the bottom of the lower plug hole (6); the output shaft of the second hydraulic cylinder (11) extends out of the upper end of the support tube (8) and is fixedly connected to the upper end of the upper plug hole (7).

3. The double-layer sofa bed according to claim 2, characterized in that: A sliding telescopic tube (9) is matched inside the support tube (8), and the upper end of the telescopic tube (9) extends upward from the support tube (8) and is fixedly connected to the upper end of the upper plug hole (7).

4. The double-layer sofa bed according to claim 1, characterized in that: The mounting frame comprises a mounting plate (13), the bottom of the second hydraulic cylinder (11) is mounted on the upper end of the mounting plate (13), the output shaft of the first hydraulic cylinder (10) is fixedly connected to the lower end of the mounting plate (13), a fixing plate (12) is fixedly provided at the front end of the first hydraulic cylinder (10), the fixing plate (12) has a center hole for the output shaft of the first hydraulic cylinder (10) to pass through, at least three guide rods (14) evenly distributed around the center hole are fixedly provided on the fixing plate (12), the guide rods (14) are vertically arranged, and the mounting plate (13) has a guide hole matching the guide rods (14).

5. The double-layer sofa bed according to claim 1, characterized in that: A protective structure is also provided between the sofa base (1) and the sofa body (2), the protective structure being located below the armrest (4), the protective structure comprising a first connecting rod (17) and a second connecting rod (18), the upper end of the sofa base (1) being provided with a first strip groove (15) for hiding the first connecting rod (17), the length direction of the first strip groove (15) being arranged along the front-back direction, the two ends of the first connecting rod (17) being respectively arranged as an aⅠ end (21) and a bⅠ end (22), the aⅠ end (21) of the first connecting rod (17) being hingedly arranged in the first strip groove (15), the lower end of the sofa body (2) being provided with a second strip groove (16) for hiding the second connecting rod (18), the second strip groove (16) corresponding to the first strip groove (15), the first strip groove (16) corresponding to the first strip groove (15), the second ... The two ends of the second connecting rod (18) are respectively set as the aⅡ end (23) and the bⅡ end (24), the aⅡ end (23) of the second connecting rod (18) is hinged in the second strip groove (16), the bⅡ end (24) of the first connecting rod (17) is hinged between the aⅠ end (21) and the bⅠ end (22) of the second connecting rod (18), the aⅠ end (21) and the aⅡ end (23) are located on the same vertical line, the second connecting rod (18) is provided with a second pin hole located between the bⅠ end (22) and the aⅡ end (23), the first connecting rod (17) is provided with a first pin hole (19) corresponding to the second pin hole, when the second connecting rod (18) and the first connecting rod (17) are rotated to be located on the same vertical line, the first pin hole (19) overlaps with the second pin hole and is passed through by a pin (20).

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