Sofa bed with linkage structure

Abstract

The application discloses a sofa bed with linkage structure and belongs to the field of furniture. In view of the single use function of the existing sofa bed without linkage structure, the sofa bed with linkage structure comprises a first supporting frame with a first cushion body and a second supporting frame with a second cushion body, the second supporting frame can translate forward and backward along the first supporting frame, the first supporting frame comprises a swing frame and a fixed frame, the first cushion body is arranged on the swing frame, the front side of the swing frame is hinged to the fixed frame, a lifting mechanism is arranged between the rear side of the swing frame and the second supporting frame, a linkage member is arranged on the first supporting frame and located on the moving path of the second supporting frame, the linkage member is linked with the lifting mechanism, when the second supporting frame moves to the front end and the rear end of the first supporting frame, the linkage member links the lifting mechanism to move, and then drives the swing frame to swing up and down. The linkage member links the lifting mechanism, so that the swing frame is lifted, and different use requirements are provided for two different use states.

Description

Technical Field

[0001] This utility model belongs to the field of furniture, and specifically relates to a sofa bed with a linkage structure. Background Technology

[0002] Existing sofa beds are typically used as sofas in their normal state, and can be converted into a bed structure by pulling out the cushions when resting. Current structures usually have the cushions attached to the bottom of the sofa or folded down to form a flat surface, allowing only a single movement without any linkage mechanism. The cushions remain horizontal in both sitting and lying positions, thus limiting the overall adjustability of the sofa bed during use. Utility Model Content

[0003] To address the issue of limited functionality in existing sofa beds due to the lack of a linkage structure, this invention provides a sofa bed with a linkage structure. By employing a linkage component to connect the lifting mechanism with the movement of the second support frame, the forward and backward movement of the second support frame is linked to the up and down swing of the swing frame, thereby meeting different usage needs.

[0004] The technical solution adopted by this utility model is as follows: A sofa bed with a linkage structure includes a first support frame with a first cushion and a second support frame with a second cushion. The second support frame can be translated back and forth along the first support frame. The first support frame includes a swing frame and a fixed frame. The first cushion is disposed on the swing frame. The front side of the swing frame is hinged to the fixed frame. A lifting mechanism is disposed between the rear side of the swing frame and the second support frame. A linkage member is provided on the first support frame. The linkage member is located on the moving path of the second support frame. The linkage member is linked with the lifting mechanism. When the second support frame moves to the front and rear ends of the first support frame, the linkage member links the lifting mechanism to move, thereby driving the swing frame to swing up and down.

[0005] The second support frame can be housed within or pulled out of the first support frame. When the second support frame is at its innermost position, the lifting mechanism is activated by a linkage to lower the swing frame. When the second support frame is at its outermost position, the lifting mechanism is activated by a linkage to raise the swing frame. This provides two usage states, which can better distinguish between the two states and meet different usage needs.

[0006] Furthermore, the fixed frame is provided with two limiting holes, and the linkage is a rod-shaped member with both ends protruding and inserted into the two limiting holes respectively. The second support frame is provided with a protruding member that can collide with both ends of the linkage, thereby realizing the linkage between the second support frame and the linkage. The limiting holes are elongated holes, so the linkage will not easily disengage. When the second support frame moves to the innermost and outermost sides respectively, the protruding members collide with both ends of the linkage, thus the linkage moves in conjunction with the lifting mechanism, thereby realizing the up and down swing of the swing frame.

[0007] Furthermore, the linkage member has a linkage end, and the lifting mechanism includes a connecting piece. One end of the connecting piece is disposed on the swing frame, and the other end is disposed at the linkage end. The middle position of the connecting piece is limited by a limiting member connected to the fixed frame. When the second support frame moves until it collides with the end of the linkage member, the linkage member drives the connecting piece to move, thereby switching the connecting piece between a vertical state and an inclined state. In the vertical state, it can lift the rear end of the swing frame; in the inclined state, it can lower the rear end of the swing frame, realizing the linkage between the linkage member and the lifting mechanism.

[0008] Furthermore, the fixing frame is also equipped with a tension spring, the other end of which is connected to the connection between the connecting piece and the linkage end, providing a certain return force for the movement of the connecting piece. The tension spring provides a certain tension, providing assistance when the connecting piece moves, effectively preventing jamming during movement and ensuring smooth and successful movement.

[0009] Furthermore, a stop is provided at the end of the linkage, and the stop is located at the rear end of the first support frame. The stop is preferably a wheel-shaped component, which can provide better anti-collision protection.

[0010] Furthermore, the fixing frame is provided with a sliding groove, and the protruding member is disposed within the sliding groove. The sidewall of the sliding groove can restrict the vertical position of the protruding member, ensuring the stability of the second support frame's forward and backward movement.

[0011] Furthermore, the protruding member is either a rod-shaped member or a wheel-shaped member.

[0012] Furthermore, the second support frame includes a folding frame and a support frame connected together. A folding assembly is provided between the folding frame and the support frame. The folding frame is housed in the support frame or arranged side by side with the support frame through the folding assembly.

[0013] Furthermore, the folding assembly includes a fixing plate, a first connecting rod, a second connecting rod, a third connecting rod, and a fourth connecting rod. The fixing plate is connected to the folding frame. The two ends of the first connecting rod are respectively connected to the fixing plate and the support frame. The two ends of the third connecting rod and the fourth connecting rod are respectively connected to the second connecting rod and the support frame. The other end of the second connecting rod is connected to the fixing plate. The third connecting rod is connected to the end of the second connecting rod, and the fourth connecting rod is connected to the middle part of the second connecting rod.

[0014] The beneficial effects of this utility model are as follows: This application is for a sofa bed with a linkage structure. The second support frame can be accommodated in or pulled out from the first support frame. When the second support frame is at the innermost position, the lifting mechanism is linked by a linkage to lower the swing frame. When the second support frame is at the outermost position, the lifting mechanism is linked by a linkage to raise the swing frame. In this way, there are two usage states. On the one hand, the usage states can be better distinguished, and on the other hand, different usage needs can be met for the two different usage states. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the linkage structure between the first support frame and the second support frame; Figure 2 A schematic diagram of the internal structure of a sofa bed with a linkage mechanism; Figure 3 This is a schematic diagram of the structure between the linkage and the support frame; Figure 4 This is a schematic diagram of the lifting mechanism; In the diagram, 1-first support frame; 11-swing frame; 12-fixed frame; 121-limiting hole; 122-limiting component; 123-tension spring; 124-stop component; 125-slide groove; 13-first pad; 2-second support frame; 21-protrusion component; 22-folding frame; 23-support frame; 24-second pad; 3-lifting mechanism; 31-connecting piece; 4-linkage component; 41-linkage end; 5-folding assembly; 51-fixed piece; 52-first connecting rod; 53-second connecting rod; 54-third connecting rod; 55-fourth connecting rod. Detailed Implementation

[0016] The technical solutions of the embodiments of this utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of this utility model.

[0017] This application relates to a sofa bed with a linkage structure, such as... Figures 1 to 4As shown, the support frame includes a first support frame 1 with a first pad 13 and a second support frame 2 with a second pad 24. The second support frame 2 is capable of translating back and forth along the first support frame 1. The first support frame 1 includes a swing frame 11 and a fixed frame 12. The first pad 13 is disposed on the swing frame 11. The front side of the swing frame 11 is hinged to the fixed frame 12. A lifting mechanism 3 is disposed on the rear side of the swing frame 11 and between the second support frame 2. A linkage 4 is provided on the first support frame 1. The linkage 4 is located on the moving path of the second support frame 2. The linkage 4 is linked with the lifting mechanism 3. When the second support frame 2 moves to the front and rear ends of the first support frame 1, the linkage 4 moves in conjunction with the lifting mechanism 3, thereby driving the swing frame 11 to swing up and down.

[0018] The second support frame 2 can be housed within or pulled out of the first support frame 1. When the second support frame 2 is at its innermost position, the lifting mechanism 3 is linked by the linkage 4 to lower the swing frame 11. When the second support frame 2 is at its outermost position, the lifting mechanism 3 is linked by the linkage 4 to raise the swing frame 11. This provides two usage states, which can better distinguish between the two states and provide different usage requirements for each state.

[0019] The fixed frame 12 is provided with two limiting holes 121. The linkage 4 is a rod-shaped member with both ends protruding and inserted into the two limiting holes 121 respectively. The second support frame 2 is provided with a protruding member 21, which can collide with both ends of the linkage 4, thereby realizing the linkage between the second support frame 2 and the linkage 4. The limiting holes 121 are elongated holes, so the linkage 4 will not easily come out. When the second support frame 2 moves to the innermost and outermost sides respectively, the protruding member 21 collides with both ends of the linkage 4, so that the linkage 4 moves in conjunction with the lifting mechanism 3, thereby realizing the up and down swing of the swing frame 11.

[0020] The linkage 4 has a linkage end, and the lifting mechanism 3 includes a connecting piece 31. One end of the connecting piece 31 is disposed on the swing frame 11, and the other end is disposed at the linkage end. The middle position of the connecting piece 31 is limited by a limiting member 122 connected to the fixed frame 12. When the second support frame 2 moves until it collides with the end of the linkage 4, the linkage 4 drives the connecting piece 31 to move, thereby switching the connecting piece 31 between a vertical state and an inclined state. In the vertical state, it can lift the rear end of the swing frame 11; in the inclined state, it can lower the rear end of the swing frame 11, realizing the linkage between the linkage 4 and the lifting mechanism 3.

[0021] The fixing frame 12 is also provided with a tension spring 123. The other end of the tension spring 123 is connected to the connection between the connecting piece 31 and the linkage end, providing a certain return force for the movement of the connecting piece 31. The tension spring 123 provides a certain tension, providing a certain assistance when the connecting piece 31 moves, effectively preventing jamming during movement and ensuring smooth and successful movement.

[0022] The end of the linkage 4 is provided with a stop 124, which is located at the rear end of the first support frame 1. The stop 124 is preferably a wheel-shaped part, which can play a good role in preventing collisions.

[0023] The fixed frame 12 is provided with a sliding groove 125, and the protruding member 21 is disposed in the sliding groove 125. The side wall of the sliding groove 125 can restrict the vertical position of the protruding member 21, ensuring the stability of the second support frame 2 moving back and forth.

[0024] The protruding member 21 can be either a rod-shaped member or a wheel-shaped member. This embodiment uses a wheel-shaped member, which can reduce resistance.

[0025] The second support frame 2 includes a connected folding frame 22 and a support frame 23. A folding assembly 5 is provided between the folding frame 22 and the support frame 23. The folding frame 22 is housed within the support frame 23 or arranged side-by-side with the support frame 23 via the folding assembly 5. A second mattress 24 is disposed on the folding frame 22. When the second support frame 2 and the first support frame 1 are assembled to form a bed structure for workers to lie down and rest, the second mattress 24 and the first mattress 13 are on the same horizontal plane.

[0026] The folding assembly 5 includes a fixing plate 51, a first connecting rod 52, a second connecting rod 53, a third connecting rod 54, and a fourth connecting rod 55. The fixing plate 51 is connected to the folding frame 22. The two ends of the first connecting rod 52 are respectively connected to the fixing plate 51 and the support frame 23. The two ends of the third connecting rod 54 and the fourth connecting rod 55 are respectively connected to the second connecting rod 53 and the support frame 23. The other end of the second connecting rod 53 is connected to the fixing plate 51. The third connecting rod 54 is connected to the end of the second connecting rod 53, and the fourth connecting rod 55 is connected to the middle part of the second connecting rod 53. Figure 4 In the middle, the fixing plate 51 and the first connecting rod 52 are in the same plane, the third connecting rod 54 and the fourth connecting rod 55 are in the same plane, and the connection point between the third connecting rod 54 and the support frame 23 and the connection point between the fourth connecting rod 55 and the support frame 23 are blocked by the fixing plate 51 and the first connecting rod 52.

[0027] When the folding frame 22 is pulled out from inside the support frame 23 until the two are placed side by side, the fixing plate 51 moves synchronously with the folding frame 22, and the first link 52, the second link 53, the third link 54 and the fourth link 55 all move in position following the fixing plate 51 until they support the folding frame 22.

[0028] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A sofa bed with a linkage structure, characterized in that, The first support frame (1) includes a first pad (13) and a second support frame (2) includes a second pad (24). The second support frame (2) is capable of translating back and forth along the first support frame (1). The first support frame (1) includes a swing frame (11) and a fixed frame (12). The first pad (13) is disposed on the swing frame (11). The front side of the swing frame (11) is hinged to the fixed frame (12). A lifting mechanism (3) is disposed between the rear side of the swing frame (11) and the second support frame (2). A linkage (4) is provided on the first support frame (1). The linkage (4) is located on the moving path of the second support frame (2). The linkage (4) is linked with the lifting mechanism (3). When the second support frame (2) moves to the front and rear ends of the first support frame (1), the linkage (4) links the lifting mechanism (3) to move, thereby driving the swing frame (11) to swing up and down.

2. The sofa bed with a linkage structure according to claim 1, characterized in that, The fixed frame (12) is provided with two limiting holes (121). The linkage (4) is a rod-shaped member with both ends of the linkage (4) protruding and inserted into the two limiting holes (121) respectively. The second support frame (2) is provided with a protruding member (21). The protruding member (21) can collide with both ends of the linkage (4), thereby realizing the linkage between the second support frame (2) and the linkage (4).

3. The sofa bed with a linkage structure according to claim 2, characterized in that, The linkage (4) is provided with a linkage end. The lifting mechanism (3) includes a connecting piece (31). One end of the connecting piece (31) is set on the swing frame (11) and the other end is set at the linkage end. The middle position of the connecting piece (31) is limited by a limiting piece (122) connected to the fixed frame (12). When the second support frame (2) moves until it collides with the end of the linkage (4), the linkage (4) drives the connecting piece (31) to move, thereby allowing the connecting piece (31) to switch between a vertical state and an inclined state.

4. The sofa bed with a linkage structure according to claim 3, characterized in that, The fixing frame (12) is also provided with a tension spring (123), and the other end of the tension spring (123) is connected to the connection between the connecting piece (31) and the linkage end.

5. The sofa bed with a linkage structure according to claim 3, characterized in that, The end of the linkage (4) is provided with a stop (124), which is located at the rear end of the first support frame (1).

6. The sofa bed with a linkage structure according to claim 5, characterized in that, The fixing frame (12) is provided with a sliding groove (125), and the protruding member (21) is disposed in the sliding groove (125).

7. The sofa bed with a linkage structure according to claim 5 or 6, characterized in that, The protruding member (21) is either a rod-shaped member or a wheel-shaped member.

8. The sofa bed with a linkage structure according to claim 1, characterized in that, The second support frame (2) includes a folding frame (22) and a support frame (23) connected together. A folding component (5) is provided between the folding frame (22) and the support frame (23). The folding frame (22) is housed in the support frame (23) or arranged side by side with the support frame (23) through the folding component (5).

9. The sofa bed with a linkage structure according to claim 8, characterized in that, The folding assembly (5) includes a fixing plate (51), a first connecting rod (52), a second connecting rod (53), a third connecting rod (54), and a fourth connecting rod (55). The fixing plate (51) is connected to the folding frame (22). The two ends of the first connecting rod (52) are connected to the fixing plate (51) and the support frame (23) respectively. The two ends of the third connecting rod (54) and the fourth connecting rod (55) are connected to the second connecting rod (53) and the support frame (23) respectively. The other end of the second connecting rod (53) is connected to the fixing plate (51). The third connecting rod (54) is connected to the end of the second connecting rod (53), and the fourth connecting rod (55) is connected to the middle part of the second connecting rod (53).

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