Electric sofa bed

Abstract

The utility model discloses an electric sofa bed which comprises a bed frame, a first supporting frame, a second supporting frame, a third supporting frame, a fourth supporting frame and a fixing support are arranged on the bed frame, the first supporting frame and the third supporting frame are hinged to the two sides of the second supporting frame respectively, the second supporting frame is connected with the fixing support in a sliding mode, and the fourth supporting frame is connected with the fixing support in a sliding mode. The fourth supporting frame is hinged to the side, away from the second supporting frame, of the third supporting frame, the fixing support is fixedly connected with the bed frame, a first linkage mechanism is arranged between the second supporting frame and the first supporting frame, and when the second supporting frame slides, the first supporting frame is driven by the first linkage mechanism to rotate. A second linkage structure is arranged between the fourth supporting frame and the fixing support, when the third supporting frame rotates, the fourth supporting frame is kept horizontally lifted, supporting of the head, the back and the legs is achieved, and various requirements of users are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of furniture, and more specifically relates to an electric sofa bed. Background Art

[0002] The existing electric sofas generally can only raise the part for leg support, while electric beds can only raise the part for head and back support. Both lack a certain degree of adjustment diversity and cannot meet the various needs of users. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides an electric sofa bed with various adjustable postures to meet the various needs of users.

[0004] To achieve the above object, the utility model provides the following technical solution: an electric sofa bed, including a bed frame, on which a first support frame, a second support frame, a third support frame, a fourth support frame and a fixed support are provided. The first support frame and the third support frame are respectively hinged on both sides of the second support frame. The second support frame is slidably connected to the fixed support. The fourth support frame is hinged on the side of the third support frame far from the second support frame. The fixed support is fixedly connected to the bed frame. A first linkage mechanism is provided between the second support frame and the first support frame, and when the second support frame slides, the first support frame is driven to rotate through the first linkage mechanism. A second linkage structure is provided between the fourth support frame and the fixed support, and when the third support frame rotates, the fourth support frame is kept horizontally lifted.

[0005] Further, the first linkage mechanism includes a first linkage rod, a second linkage rod, a third linkage rod and a first driving device for driving the second support frame to slide. The three ends of the first linkage rod, the second linkage rod and the third linkage rod are hinged. The other end of the first linkage rod is hinged to the second support frame. The other end of the second linkage rod is hinged to the fixed support. The other end of the third linkage rod is hinged to the first support frame.

[0006] Further, the second linkage structure includes an extension support, a linkage support and a second driving device for driving the third support frame to rotate. One end of the extension support is fixedly connected to the second support frame. One end of the linkage support is hinged to the other end of the extension support. The other end of the linkage support is hinged to the fourth support frame.

[0007] Further, a guide rod is provided on the fixed support, and a slider slidably connected to the guide rod is provided on the second support frame.

[0008] Further, bed boards are provided on the first support frame, the second support frame, the third support frame and the fourth support frame, and a flexible pad is provided on the bed boards.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows: when the second support frame moves towards the first support frame, the first support frame will rotate upwards under the drive of the first linkage structure to form an inclined backrest. When the third support frame rotates upwards, the fourth support frame will always remain in a horizontal state during the lifting process through the second linkage structure. The third support frame supports the thigh part of a person, and the fourth support frame supports the calf part of a person. When the second support frame slides, it drives the third support frame and the fourth support frame to move synchronously, enabling the user to separately select to lift the backrest formed by the first support frame or the third support frame and the fourth support frame for the legs, or to lift the backrest and the leg support simultaneously, meeting various needs of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic external structure diagram of the electric sofa bed of the present utility model;

[0011] Figure 2 is a schematic structural diagram of each support frame in the electric sofa bed of the present utility model;

[0012] Figure 3 is a schematic structural diagram when each support frame in the electric sofa bed of the present utility model rotates and lifts.

[0013] Reference numerals: bed frame 1; first support frame 2; second support frame 3; third support frame 4; fourth support frame 5; fixed support frame 6; first linkage rod 7; second linkage rod 8; third linkage rod 9; extension support frame 10; linkage support frame 11; guide rod 12; slider 13; flexible pad 14. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] In the description of the present utility model, it should be noted that for orientation terms, if there are terms such as "center", "horizontal (X)", "vertical (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the indicated orientation and position relationship are based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present utility model.

[0015] In addition, if there are terms "first" and "second", they are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "several" and "a number of" is two or more, unless otherwise clearly and specifically defined.

[0016] Reference Figures 1 to 3 The present utility model will be further described below.

[0017] An electric sofa bed includes a bed frame 1. A first support frame 2, a second support frame 3, a third support frame 4, a fourth support frame 5 and a fixed support 6 are arranged on the bed frame 1. The first support frame 2 and the third support frame 4 are respectively hinged on both sides of the second support frame 3. The second support frame 3 is slidably connected to the fixed support 6. The fourth support frame 5 is hinged on the side of the third support frame 4 away from the second support frame 3. The fixed support 6 is fixedly connected to the bed frame 1. A first linkage mechanism is arranged between the second support frame 3 and the first support frame 2. When the second support frame 3 slides, the first support frame 2 is driven to rotate by the first linkage mechanism. A second linkage structure is arranged between the fourth support frame 5 and the fixed support 6. When the third support frame 4 rotates, the fourth support frame 5 is kept horizontally lifted.

[0018] As Figures 1 to 3 shown, when the second support frame 3 moves towards the first support frame 2, the first support frame 2 will rotate upwards under the drive of the first linkage structure to form an inclined backrest. When the third support frame 4 rotates upwards, the fourth support frame 5 is kept in a horizontal state during the lifting process through the second linkage structure. The third support frame 4 supports the thigh part of a person, and the fourth support frame 5 supports the calf part of a person. When the second support frame 3 slides, it drives the third support frame 4 and the fourth support frame 5 to move synchronously.

[0019] Therefore, when a person lies on the above-mentioned sofa bed, the backrest formed by lifting the first support frame 2 alone or the third support frame 4 and the fourth support frame 5 for lifting the legs can be selected, or the backrest and the leg support can be lifted simultaneously, so that the user can choose various lying postures on the sofa bed according to their own needs.

[0020] In addition, since the second support frame 3 moves during the lifting process of the first support frame 2, the head of a person can always be kept at the same horizontal distance from the head of the bed as when lying flat.

[0021] As Figure 2 and Figure 3 shown, preferably in this embodiment, the first linkage mechanism includes a first linkage rod 7, a second linkage rod 8, a third linkage rod 9 and a first driving device for driving the second support frame 3 to slide. The three ends of the first linkage rod 7, the second linkage rod 8 and the third linkage rod 9 are hinged. The other end of the first linkage rod 7 is hinged to the second support frame 3. The other end of the second linkage rod 8 is hinged to the fixed support 6. The other end of the third linkage rod 9 is hinged to the first support frame 2.

[0022] As Figure 2 and Figure 3As shown, in this embodiment, preferably, when the second support frame 3 moves, the first linkage rod 7 rotates upward on the second support frame 3, and the second linkage rod 8 rotates upward, thereby driving the first support frame 2 to rotate upward through the third linkage rod 9.

[0023] As Figure 2 and Figure 3 shown, in this embodiment, preferably, the second linkage structure includes an extension bracket 10, a linkage bracket 11, and a second driving device for driving the third support frame 4 to rotate. One end of the extension bracket 10 is fixedly connected to the second support frame 3. One end of the linkage bracket 11 is hinged to the other end of the extension bracket 10, and the other end of the linkage bracket 11 is hinged to the fourth support frame 5.

[0024] As Figure 2 and Figure 3 shown, in this embodiment, preferably, since the linkage bracket 11 connects the fourth support frame 5 and the fixed bracket 6, when the third support frame 4 rotates upward, the fourth support frame 5 can be lifted upward while maintaining a horizontal state.

[0025] In this embodiment, preferably, both the first driving device and the second driving device can be electric telescopic rods or driving devices composed of lead screws, nuts, and motors. At the same time, the rotation angles of the first support frame 2 and the third support frame 4 can be arbitrarily adjusted within the adjustment range through the driving devices.

[0026] As Figure 2 shown, in this embodiment, preferably, a guide rod 12 is provided on the fixed bracket 6, and a slider 13 slidably connected to the guide rod 12 is provided on the second support frame 3.

[0027] As Figure 1 shown, in this embodiment, preferably, bed boards are provided on the first support frame 2, the second support frame 3, the third support frame 4, and the fourth support frame 5, and a flexible pad 14 is provided on the bed board.

[0028] In this embodiment, preferably, one end of the flexible pads 14 on the third support frame 4 and the fourth support frame 5 that are close to each other extends out an extrusion section. When the third support frame 4 and the fourth support frame 5 are horizontal, the two extrusion sections squeeze each other. When the third support frame 4 rotates and the fourth support frame 5 is lifted, the gap between the third support frame 4 and the fourth support frame 5 is filled through the two extrusion sections, ensuring support at the popliteal fossa of the leg.

[0029] The above are only the preferred embodiments of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements should also be regarded as within the protection scope of the present utility model.

Claims

1. An electric sofa bed, characterized in that: The invention comprises a bed frame, on which a first support frame, a second support frame, a third support frame, a fourth support frame and a fixed support frame are arranged, the first support frame and the third support frame are respectively hinged on both sides of the second support frame, the second support frame is slidably connected to the fixed support frame, the fourth support frame is hinged to a side of the third support frame away from the second support frame, the fixed support frame is fixedly connected to the bed frame, a first linkage mechanism is arranged between the second support frame and the first support frame, and the first linkage mechanism drives the first support frame to rotate when the second support frame slides, and a second linkage structure is arranged between the fourth support frame and the fixed support frame, so that the fourth support frame is kept horizontally lifted when the third support frame rotates.

2. The electric sofa bed according to claim 1, characterized in that: The first linkage mechanism includes a first linkage rod, a second linkage rod, a third linkage rod and a first driving device that drives the second support frame to slide. The three ends of the first linkage rod, the second linkage rod and the third linkage rod are hinged. The other end of the first linkage rod is hinged to the second support frame, the other end of the second linkage rod is hinged to the fixed bracket, and the other end of the third linkage rod is hinged to the first support frame.

3. The electric sofa bed according to claim 1, characterized in that: The second linkage structure includes an extended bracket, a linkage bracket and a second driving device that drives the third support frame to rotate, one end of the extended bracket is fixedly connected to the second support frame, one end of the linkage bracket is hinged to the other end of the extended bracket, and the other end of the linkage bracket is hinged to the fourth support frame.

4. The electric sofa bed according to claim 1, characterized in that: The fixed bracket is provided with a guide rod, and the second support bracket is provided with a sliding block slidably connected to the guide rod.

5. The electric sofa bed according to claim 1, characterized in that: The first support frame, the second support frame, the third support frame and the fourth support frame are all provided with a bed board, and a flexible pad is provided on the bed board.

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