Sofa bed

Abstract

The utility model relates to the technical field of sofa beds, which comprises a backrest part and a cushion part, and the cushion part is provided with a translation mechanism. A bed body part is arranged below the cushion part, and a lifting mechanism is arranged on the bed body part; a displacement driving device is arranged between the cushion part and the bed body part to respectively drive the cushion part to move back and forth along the direction of the translation mechanism and drive the bed body part to move up and down along the direction of the lifting mechanism; the cushion part moving forwards along the translation mechanism and the bed body part moving upwards along the lifting mechanism are kept flat to form a bed body; the backrest part and the cushion part form an included angle to form a sofa. The driving mode is simple in structure, switching operation of driving the cushion part and the bed body part can be achieved through the displacement driving device, and therefore the sofa bed meeting the requirements of the sofa and the bed body can be rapidly, safely and automatically switched, the space utilization rate can be increased, and occupied space can be reduced.

Description

Technical Field

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

[0002] The current population is growing rapidly with the rapid development of society. In densely populated cities, the space in people's bedrooms, including children's bedrooms, is often very limited. In such an environment, the limited living space is particularly obvious. Therefore, most families will purchase a sofa bed, which is used as a sofa during normal times and converted into a bed when guests need to stay overnight. This not only saves money, but also reduces space occupation and increases space utilization. Therefore, a variety of sofa beds have appeared on the market, and the conversion between sofa and bed is also diverse, including folding, flip, and pull-out types.

[0003] However, current sofa beds still have the following disadvantages: 1. The conversion process of the sofa bed is relatively complicated, which is inconvenient for operators to operate and requires high labor intensity. In addition, the sofa bed is prone to automatic folding / flipping, which may cause personal injury. 2. Regardless of whether the sofa bed is foldable, flippable, or extendable, its backrest is currently mostly directly fixed. After the sofa bed is unfolded, it forms a form similar to a headrest. It is very useless in living conditions with limited space, taking up space, and the backrest angle cannot be reasonably adjusted for use.

[0004] Therefore, in order to solve the problem of limited space in small apartments, designing a sofa bed that can increase space utilization, reduce space occupancy, and facilitate quick and safe conversion to meet the needs of sofas and beds has become an urgent need in the current market. Utility Model Content

[0005] The utility model provides a sofa bed which can solve the technical problems in the background technology, increase the utilization rate of space, reduce the space occupation, and facilitate rapid, safe and automatic conversion to meet the needs of sofa and bed.

[0006] The technical solution of the utility model is a sofa bed, comprising a backrest and a seat cushion, wherein the seat cushion is provided with a translation mechanism; a bed body is provided below the seat cushion, and the bed body is provided with a lifting mechanism; a displacement driving device is provided between the seat cushion and the bed body, respectively driving the seat cushion to move forward and backward along the direction of the translation mechanism and driving the bed body to move up and down along the direction of the lifting mechanism;

[0007] The seat cushion portion displaced forward along the translation mechanism and the bed portion displaced upward along the lifting mechanism remain flat to form a bed body;

[0008] The backrest and the seat cushion form an angle to form a sofa.

[0009] Furthermore, the lifting mechanism is a scissors-type lifting platform, one end of the displacement drive device is hingedly connected to the scissors-type lifting platform, and the other end is hingedly connected to the seat cushion part; the end of the displacement drive device connected to the seat cushion part is telescopic to drive the seat cushion part to move translationally, and the end of the displacement drive device connected to the scissors-type lifting platform is relatively telescopic to drive the scissors-type lifting platform to move up and down.

[0010] Furthermore, the scissor-type lifting platform is connected to one end of the displacement driving device through a connecting rod, and a rotating block is provided at the connection between the displacement driving device and the connecting rod. The displacement driving device rotates the connecting rod through the displacement rotating block, thereby driving the scissor-type lifting platform to move upward or downward.

[0011] Furthermore, a cushion is provided on one side of the backrest portion, and the cushion is connected to the backrest portion via a hinge.

[0012] Furthermore, a flip driving device for driving and adjusting the flip angle of the cushion is provided between the backrest and the cushion, and two ends of the flip driving device are hingedly connected to the backrest and the cushion respectively.

[0013] Furthermore, a headrest is provided on one side of the backrest portion, and the headrest is installed on the backrest portion via a sliding mechanism, and the headrest moves up and down along the direction of the sliding mechanism.

[0014] Furthermore, the headrest is provided with a sliding drive device for driving it to move up and down along the sliding mechanism.

[0015] Furthermore, a folding foot pad is provided on a side of the seat cushion portion relative to the backrest portion, and the folding foot pad is connected to the seat cushion portion via a hinge.

[0016] Furthermore, the folding foot pad is provided with a folding drive device for driving the folding foot pad to unfold or fold.

[0017] Furthermore, the translation mechanism is a slide rail arranged below the seat cushion, and the seat cushion slides relative to the backrest along the direction of the slide rail; a limiting plate is provided at one end of the slide rail relative to the backrest for limiting the displacement of the seat cushion.

[0018] Furthermore, a support frame is provided below the seat cushion portion, and a pulley for assisting the sliding displacement of the seat cushion portion is provided at the bottom of the support frame.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] When the seat cushion portion is in a state of being flat and level, the seat cushion portion can be moved forward or backward by the translation mechanism, and the bed body can be moved upward or downward by the lifting mechanism. When the device is in a sofa state, the displacement driving device is extended to drive the seat cushion portion to move outward along the translation mechanism. When the seat cushion portion is moved to a corresponding position, the displacement driving device continues to extend to drive the bed body portion to move upward along the lifting mechanism, so that the bed body portion and the seat cushion portion are leveled to form a bed state. When the device is in a bed state, the displacement driving device is retracted to drive the bed body portion to move downward along the lifting mechanism. When the bed body portion is moved to a corresponding position, the displacement driving device continues to retract to drive the seat cushion portion to move inward along the translation mechanism, so that an angle is formed between the backrest portion and the seat cushion portion to form a sofa. The driving structure is simple and the switching operation of driving the seat cushion portion and the bed body can be realized by a displacement driving device, so that fast switching is convenient and quick, and can be completed quickly without the need for tedious operations such as disassembling the seat cushion.

[0021] 2. The tilting drive device is provided so that the angle of the backrest can be adjusted for rational use, and the sliding drive device is provided so that the height of the headrest can be adjusted for rational use, thereby increasing space utilization and reducing space occupancy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the framework structure of the present utility model.

[0023] Figure 2 It is a schematic diagram of the frame structure from another angle in the utility model.

[0024] Figure 3 It is a structural schematic diagram of the scissor-type lifting platform in the utility model.

[0025] Figure 4 It is a state schematic diagram of the sofa in the present utility model.

[0026] Figure 5 It is a state schematic diagram of the bed body in the utility model.

[0027] Figure 6 It is a schematic diagram of the state of adjusting the angle of the cushion in the utility model.

[0028] Figure 7 It is a schematic diagram of the state of adjusting the height of the headrest in the utility model.

[0029] Figure 8 It is a schematic diagram of the state in which the foldable foot pad of the utility model is unfolded.

[0030] Among them, 1. backrest, 2. seat cushion, 3. bed body, 4. displacement drive device, 5. scissor lift, 6. connecting rod, 7. rotating block, 8. cushion, 9. flip drive device, 10. headrest, 11. sliding drive device, 12. folding foot pad, 13. slide rail, 14. limit plate, 15. support frame, 16. pulley, 17. fixed rod, 18. movable rod, 19. roller. DETAILED DESCRIPTION

[0031] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict.

[0032] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. In addition, the terms "upper," "lower," "left," "right," "top," and "bottom" used in this utility model are merely relative to the relative positions of the components of the utility model in the accompanying drawings.

[0033] In addition, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art. The terms used in this specification are only used to describe specific embodiments and are not intended to limit the present invention. The term "and / or" as used herein includes any combination of one or more of the related listed items.

[0034] It should be understood that although the terms first, second, third, etc. may be used to describe various elements in the present disclosure, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from each other. For example, a first element may also be referred to as a second element, and similarly, a second element may also be referred to as a first element without departing from the scope of the present disclosure.

[0035] Please refer to Figures 1 to 8 , the utility model provides a sofa bed, Figure 1 and Figure 2 In order to facilitate observation of the internal structure of the sofa bed, the sofa cushions wrapped around the sofa bed frame are correspondingly hidden. The sofa bed is introduced in detail below with reference to the accompanying drawings.

[0036] Embodiment 1: A sofa bed comprises a backrest 1 and a seat cushion 2, the seat cushion 2 is provided with a translation mechanism; a bed body 3 is provided below the seat cushion 2, and the bed body 3 is provided with a lifting mechanism; a displacement driving device 4 is provided between the seat cushion 2 and the bed body 3, respectively driving the seat cushion 2 to move forward and backward along the direction of the translation mechanism and driving the bed body 3 to move up and down along the direction of the lifting mechanism; the seat cushion 2 that moves forward along the translation mechanism and the bed body 3 that moves upward along the lifting mechanism remain flat to form a bed body; the backrest 1 and the seat cushion 2 form an angle to form a sofa; specifically, in this embodiment, a translation mechanism and a lifting mechanism are provided correspondingly to the seat cushion 2 and the bed body 3, so that the seat cushion 2 can be displaced forward or backward by the translation mechanism, while the bed body 3 can be displaced upward or downward by the lifting mechanism; when the device is in When in the sofa state, the displacement drive device 4 is extended to drive the seat cushion part 2 to move outward along the translation mechanism. When the seat cushion part 2 moves to the corresponding position, the displacement drive device 4 continues to extend to drive the bed body part 3 to move upward along the lifting mechanism, so that the bed body part 3 and the seat cushion part 2 are leveled to form a bed state; when the device is in the bed state, the displacement drive device 4 is retracted to drive the bed body part 3 to move downward along the lifting mechanism. When the bed body part 3 moves to the corresponding position, the displacement drive device 4 continues to retract to drive the seat cushion part 2 to move inward along the translation mechanism, so that an angle is formed between the backrest part 1 and the seat cushion part 2 to form a sofa. The driving method has a simple structure. The switching operation of driving the seat cushion part 2 and the bed body part 3 can be realized by a displacement drive device 4, thereby realizing quick and convenient switching, and can be completed quickly without the need for tedious operations such as disassembling the seat cushion.

[0037] Among them, the driving devices such as the displacement driving device 4, the sliding driving device 11, the flipping driving device 9 and the folding driving device in this device are any one of the driving devices such as the electric cylinder / pneumatic cylinder / hydraulic cylinder, among which the electric cylinder is preferably used to achieve precise control of the distance adjustment of displacement / sliding / flipping / folding.

[0038] Specifically, in the above embodiment, the lifting mechanism is a scissor-type lifting platform 5, one end of the displacement drive device 4 is hingedly connected to the scissor-type lifting platform 5, and the other end is hingedly connected to the seat cushion part 2; the end of the displacement drive device 4 connected to the seat cushion part 2 is telescopic to drive the seat cushion part 2 to move translationally, and the end of the displacement drive device 4 connected to the scissor-type lifting platform 5 is relatively telescopic to drive the scissor-type lifting platform 5 to move up and down. When the device is in the sofa state, the displacement drive device 4 is first extended to drive the cushion part 2, so that the cushion part 2 set on the translation mechanism such as the slide rail is displaced outward along the slide rail direction. When the cushion part 2 is displaced to the corresponding position, the displacement drive device 4 continues to drive and extend to drive the scissors-type lifting platform 5 connected thereto to work, thereby driving the bed body 3 set on the scissors-type lifting platform 5 to move upward and move to a height flush with the cushion part 2, so that the bed body 3 and the cushion part 2 are leveled to form a bed state; when the device is in the bed state, the displacement drive device 4 is first retracted to drive the scissors-type lifting platform 5 to work, so that the bed body 3 is displaced downward along the scissors-type lifting platform 5. When the bed body 3 drops to the corresponding position, the displacement drive device 4 continues to retract to drive the cushion part 2 to move inward along the translation mechanism, so that an angle is formed between the backrest 1 and the cushion part 2 to form a sofa. Therefore, the switching operation of driving the cushion part 2 and the bed body 3 can be realized simultaneously through a displacement drive device 4, without the need to set up separate drive devices for the cushion part 2 and the bed body 3, making the drive structure of the device simpler and more clever, and lowering the production cost.

[0039] like Figure 1 As shown, in the above embodiment, the translation mechanism is a slide rail disposed beneath the seat cushion 2. The seat cushion 2 slides relative to the backrest 1 along the direction of the slide rail 13. A stopper 14 is provided at one end of the slide rail 13, which is opposite the backrest 1, to limit the displacement of the seat cushion 2. By providing the stopper 14 on the slide rail 13, when the displacement drive device 4 extends outward to displace the seat cushion 2 and reaches the corresponding limit position of the stopper 14, the seat cushion 2 cannot be further driven outward by the displacement drive device 4 due to the position limited by the stopper 14. At this time, since one end of the seat cushion 2 cannot be displaced, the displacement drive device 4, when extended, will relatively drive the lifting device at the other end, i.e., the scissor-type lift 5, to raise the seat cushion 2.

[0040] like Figure 3 As shown, the scissor-type lifting platform 5 is connected to one end of the displacement driving device 4 through a connecting rod 6. A rotating block 7 is provided at the connection between the displacement driving device 4 and the connecting rod 6. The displacement driving device 4 rotates the connecting rod 6 by displacing the rotating block 7, thereby driving the scissor-type lifting platform 5 to move upward or downward.

[0041] Specifically, Figure 3As shown, the scissor-type lifting platform 5 is composed of a pair of symmetrically arranged lifting fork rods, which are X-shaped. The lifting fork rods are divided into a fixed rod 17 and a movable rod 18. The movable rod 18 is provided with a roller 19 for assisting sliding displacement; the displacement drive device 4 is respectively connected to the symmetrically arranged lifting fork rods through the connecting rod 6, thereby simultaneously driving the symmetrically arranged lifting fork rods to realize upward or downward lifting operation; the displacement drive device 4 is connected to the fixed rod 17 or the movable rod 18 of the lifting fork rod, thereby driving the scissor-type lifting platform 5 to move upward or downward; wherein the displacement drive device 4 is preferably connected to the fixed rod 17, and by driving the fixed rod 17 to rotate, the movable rod 18 is displaced to realize the upward or downward lifting movement of the scissor-type lifting platform 5.

[0042] Example 2: In order to make the user more comfortable and convenient to use the backrest 1, Figure 1 and Figure 6 As shown, a sofa bed comprises a backrest 1, a seat cushion 2, and a bed body 3. A backrest 8 is provided on one side of the backrest 1, and the backrest 8 is connected to the backrest 1 by a hinge. A tilting drive 9 is provided between the backrest 1 and the backrest 8 to drive and adjust the tilting angle of the backrest 8. The two ends of the tilting drive 9 are hingedly connected to the backrest 1 and the backrest 8, respectively. The hinge connection allows the angle of the backrest 8 to be manually adjusted; preferably, to achieve automation, the tilting drive 9 is provided so that when the angle of the backrest 8 needs to be adjusted, the tilting drive 9 can be driven to extend or retract to drive the backrest 8 along the hinge connection to achieve tilt adjustment.

[0043] Example 3: In order to make the user more comfortable, Figure 1 and Figure 7 As shown, a sofa bed comprises a backrest 1 and a seat cushion 2. A headrest 10 is provided on one side of the backrest 1. The headrest 10 is mounted on the backrest 1 via a sliding mechanism, and moves up and down along the sliding mechanism. The headrest 10 is provided with a sliding drive 11 for driving the headrest 10 up and down along the sliding mechanism. The headrest 10 provides support for the user's head while reclining on the backrest 1, providing greater comfort. Furthermore, to accommodate different user heights or different scenarios, the headrest 10 is adjustable in height via a sliding mechanism.

[0044] Example 4, as Figure 1 As shown in the combination of the above-mentioned embodiment 2 and embodiment 3, the headrest 10 is set on the cushion 8 through a sliding mechanism, and the sliding mechanism is a sliding device such as a slide rail 13 that can move the headrest 10 up and down along a fixed direction; when the headrest 10 needs to be adjusted in height, the headrest 10 is moved upward or downward relative to the cushion 8 through the slide rail 13.

[0045] Example 5: Figure 1 and Figure 8 As shown, the folding drive device is not shown in the drawing because it is obscured by the folding foot pad 12. To provide greater user comfort, a sofa bed is provided, comprising a backrest 1 and a seat cushion 2. The seat cushion 2 is provided with a folding foot pad 12 on a side opposite the backrest 1. The folding foot pad 12 is connected to the seat cushion 2 via a hinge. The folding foot pad 12 is provided with a folding drive device for driving the folding foot pad 12 to unfold or fold. When using the sofa bed, the user's legs can be supported by the folding foot pad 12 via the folding drive device, thereby improving the user's experience and comfort.

[0046] Based on the above embodiment, a sofa bed includes a backrest portion 1, a seat cushion portion 2 and a bed body portion 3. In order to ensure the stability of the seat cushion portion 2 when in the bed state, a support frame 15 is further provided under the seat cushion portion 2 to support the seat cushion portion 2; at the same time, in order to make it easier for the seat cushion portion 2 to slide along the direction of the translation mechanism, a pulley 16 for assisting the sliding displacement of the seat cushion portion 2 is provided at the bottom of the support frame 15.

[0047] The above description is merely a preferred embodiment of the present invention. The present invention is not limited to the aforementioned embodiments. As long as the technical effects of the present invention are achieved by the same means, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure. Within the scope of protection of the present invention, its technical solutions and / or implementation methods may be modified and varied in various ways.

Claims

1. A sofa bed, characterized in that: The invention comprises a backrest portion (1) and a seat cushion portion (2), wherein the seat cushion portion (2) is provided with a translation mechanism; a bed portion (3) is provided below the seat cushion portion (2), and the bed portion (3) is provided with a lifting mechanism; a displacement driving device (4) is provided between the seat cushion portion (2) and the bed portion (3), respectively driving the seat cushion portion (2) to move forward and backward along the direction of the translation mechanism and driving the bed portion (3) to move up and down along the direction of the lifting mechanism; The cushion portion (2) displaced forward along the translation mechanism and the bed portion (3) displaced upward along the lifting mechanism remain flat to form a bed body; The backrest portion (1) and the cushion portion (2) form an angle to form a sofa.

2. The sofa bed according to claim 1, characterized in that: The lifting mechanism is a scissor-type lifting platform (5), one end of the displacement driving device (4) is hingedly connected to the scissor-type lifting platform (5), and the other end is hingedly connected to the seat cushion portion (2); the end of the displacement driving device (4) connected to the seat cushion portion (2) is telescopically driven to drive the seat cushion portion (2) to move in translation, and the end of the displacement driving device (4) connected to the scissor-type lifting platform (5) is relatively telescopically driven to drive the scissor-type lifting platform (5) to move up and down.

3. The sofa bed according to claim 2, characterized in that: The scissor-type lifting platform (5) is connected to one end of the displacement driving device (4) via a connecting rod (6). A rotating block (7) is provided at the connection between the displacement driving device (4) and the connecting rod (6). The displacement driving device (4) rotates the connecting rod (6) via the displacement rotating block (7), thereby driving the scissor-type lifting platform (5) to move upward or downward.

4. The sofa bed according to claim 1, characterized in that: A back cushion (8) is provided on one side of the backrest (1), and the back cushion (8) is connected to the backrest (1) via a hinge; a flip driving device (9) for driving and adjusting the flip angle of the back cushion (8) is provided between the backrest (1) and the back cushion (8), and two ends of the flip driving device (9) are respectively hingedly connected to the backrest (1) and the back cushion (8).

5. The sofa bed according to claim 1, characterized in that: A headrest (10) is provided on one side of the backrest portion (1); the headrest (10) is mounted on the backrest portion (1) via a sliding mechanism, and the headrest (10) moves up and down along the direction of the sliding mechanism.

6. The sofa bed according to claim 5, characterized in that: The headrest (10) is provided with a sliding drive device (11) for driving the headrest to move up and down along a sliding mechanism.

7. The sofa bed according to claim 1, characterized in that: A folding foot pad (12) is provided on one side of the seat cushion portion (2) relative to the backrest portion (1), and the folding foot pad (12) is connected to the seat cushion portion (2) via a hinge.

8. The sofa bed according to claim 7, characterized in that: The folding foot pad (12) is provided with a folding drive device for driving the folding foot pad (12) to unfold or fold.

9. The sofa bed according to claim 1, characterized in that: The translation mechanism is a slide rail (13) arranged below the seat cushion portion (2), and the seat cushion portion (2) slides relative to the backrest portion (1) along the direction of the slide rail (13); a limiting piece (14) for limiting the displacement of the seat cushion portion (2) is provided at one end of the slide rail (13) relative to the backrest portion (1).

10. The sofa bed according to claim 1, characterized in that: A support frame (15) is further provided below the cushion portion (2), and a pulley (16) for assisting the cushion portion (2) in sliding displacement is provided at the bottom of the support frame (15).

Images