Electric sofa bed frame and sofa bed using the frame

Abstract

The present invention relates to an electric sofa bed frame and a sofa bed using the frame, belonging to the field of furniture, including a main frame, a mobile frame and a rotating frame, wherein the mobile frame is slidably connected to the main frame, the rotating frame is rotatably connected to the main frame, the mobile frame is provided with a pushing block which acts on the rotating frame and drives the rotating frame to rotate as the mobile frame moves, a hysteresis gap is left between the pushing block and the rotating frame, the main frame is provided with a positioning mechanism for positioning the mobile frame and the rotating frame, and the rotating frame is turned over and docked with the mobile frame to form a bed body. When the sofa bed needs to be opened, only the mobile frame needs to be pulled to turn the rotating frame out together, which is more convenient to operate.

Description

Technical Field

[0001] The invention relates to the technical field of furniture, in particular to an electric sofa bed frame and a sofa bed using the frame. Background Art

[0002] Sofa bed refers to furniture that can be used as both a sofa and a bed. Modern living room layout advocates simplicity, and multifunctional furniture is becoming more and more popular. Sofa bed is one of them. In a small-sized room, a sofa bed is necessary to meet the living needs of occasional visitors.

[0003] There is a kind of sofa bed on the market now, such as Figure 8 As shown, the sofa bed comprises a main frame 1, a mobile frame 2 and a rotating frame 3. The mobile frame 2 is slidably connected to the main frame 1, and the rotating frame 3 is rotatably connected to the main frame 1. Cushions are respectively provided on the mobile frame 2 and the rotating frame 3. When used as a sofa, the sofa bed is folded as a whole, and the rotating frame 3 is located inside the mobile frame 2. The overall structure is relatively small and occupies little space, and people can sit on the cushion of the mobile frame 2; when used as a bed, the mobile frame 2 can be pulled out first, and then the rotating frame 3 can be rotated out, so that the upper surface of the mobile frame 2 and the upper surface of the rotating frame 3 are flush to form a bed body, and then the mobile frame 2 and the rotating frame 3 are fixed by a positioning mechanism, and the positioning mechanism adopts a latch, so that it can be used as a bed.

[0004] However, the above-mentioned sofa bed has the following defects: when changing from the sofa state to the bed state, the personnel need to first pull out the movable frame 2 and then turn over the rotating frame 3, which requires two operations, and the operation is more troublesome. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an electric sofa bed frame. When the sofa bed needs to be opened, only the moving frame needs to be pulled to flip the rotating frame out together, which is more convenient to operate.

[0006] The above-mentioned object of the present invention is achieved through the following technical solutions:

[0007] An electric sofa bed frame comprises a main frame, a mobile frame and a rotating frame, wherein the mobile frame is slidably connected to the main frame, and the rotating frame is rotatably connected to the main frame, the mobile frame is provided with a pushing block which acts on the rotating frame and drives the rotating frame to rotate as the mobile frame moves, a lag gap is left between the pushing block and the rotating frame, the main frame is provided with a positioning mechanism for positioning the mobile frame and the rotating frame, and the rotating frame is flipped over and docked with the mobile frame to form a bed body.

[0008] By adopting the above technical solution, when the sofa bed needs to be opened, it is only necessary to pull the moving frame. Initially, when the moving frame is pulled, the pushing block will not drive the rotating frame to rotate because there is a lag gap between the pushing block and the rotating frame. After the moving frame is moved away from above the rotating frame, the pushing block will hook the rotating frame and drive the rotating frame to rotate. After the rotating frame is turned over, it will dock with the moving frame to form a bed body. Finally, the rotating frame and the moving frame are fixed by the positioning mechanism for normal use. Such a structure enables the moving frame and the rotating frame to be linked, so that the sofa bed can be opened into a bed state by only pulling the moving frame, which is more convenient and quick to operate.

[0009] The present invention is further configured as follows: the mobile frame includes a first frame body and a second frame body respectively connected to the main frame body in a sliding manner, the pushing block is arranged on the second frame body, the main frame body is provided with a scissors-type telescopic frame, one end of the scissors-type telescopic frame is rotatably connected to the main frame body, and the other end is rotatably connected to the first frame body, the scissors-type telescopic frame is rotatably connected to the second frame body, and the distance from the rotation point between the scissors-type telescopic frame and the second frame body to the fixed point between the scissors-type telescopic frame and the main frame body is smaller than the distance from the rotation point between the scissors-type telescopic frame and the first frame body to the fixed point between the scissors-type telescopic frame and the main frame body.

[0010] By adopting the above technical solution, when the first frame moves, the second frame can be driven to move by the scissor-type telescopic frame, because the distance from the rotation point between the scissor-type telescopic frame and the second frame to the fixed point between the scissor-type telescopic frame and the main frame is smaller than the distance from the rotation point between the scissor-type telescopic frame and the first frame to the fixed point between the scissor-type telescopic frame and the main frame, so that the movement speed of the first frame will be faster than the movement speed of the second frame. Such a structure makes the lag gap between the push block and the rotating frame not need to be very large, and the push block does not need to protrude outside the main frame, so that the overall sofa bed frame is more compact and regular.

[0011] The present invention is further configured as follows: the rotating frame includes a rotating rod and a rotating arm respectively connected to the main frame body for rotation, a connecting rod is provided between the rotating rod and the rotating arm, the connecting rod is respectively connected to the rotating rod and the rotating arm for rotation, the rotating arm is provided with a driving rod, one end of the driving rod is connected to the rotating arm for rotation, and the other end is rotatably provided with a rotating shaft, the rotating shaft is rotatably provided with a guide wheel, the main frame body is provided with a guide rail, the guide wheel is rotatably arranged in the guide rail, the sliding direction of the rotating shaft is the same as the sliding direction of the moving frame, and when the rotating frame rotates, the pushing block is hooked on the rotating shaft.

[0012] If the rotating frame is pushed to rotate by the pushing block, because the rotating frame will rotate, sliding friction will be generated between the pushing block and the rotating frame during rotation, which is easy to generate noise, and after long-term use, the pushing block and the rotating frame will be worn more. By adopting the above technical solution, a guide wheel is arranged on the rotating shaft, and the guide wheel is rollingly arranged in the guide rail, so that when the rotating frame is pushed to rotate, it is not easy to generate noise, and the wear is relatively small after long-term use.

[0013] The present invention is further configured as follows: the positioning mechanism comprises an electric cylinder, the electric cylinder is fixedly mounted on the main frame, and the output end of the electric cylinder is fixed to the second frame.

[0014] By adopting the above technical solution, the movable frame can be driven to move and the rotating frame can be driven to rotate by the electric cylinder, so that there is no need to manually pull the movable frame. The movable frame and the rotating frame can be positioned after the electric cylinder stops working. Such a structure can realize the automatic opening and closing of the sofa bed frame, making it more convenient and simple for users to operate.

[0015] The present invention is further configured such that: the connecting rod is provided with a first limit block, and when the rotating frame is flipped over and fully unfolded, the first limit block abuts against the rotating arm.

[0016] By adopting the above technical solution, when the sofa bed needs to be opened, the electric cylinder drives the rotating frame to rotate. When the rotating frame is fully unfolded, the rotating frame will contact the first limit block. The first limit block limits the rotating frame and stops the rotating frame from rotating. After the rotating frame is unfolded, it can be combined with the mobile frame to form a bed body. Such a structure can realize the rapid opening of the sofa bed. After the sofa bed is opened, the first limit block can limit the rotating frame, so that the unfolded bed body structure is more stable.

[0017] The present invention is further configured as follows: the connecting rod is provided with a second limit block, and after the rotating frame is rotated and retracted, the second limit block abuts against the rotating rod.

[0018] By adopting the above technical solution, the second limit block can limit the rotating frame after rotation, so that the folded rotating frame will not conflict with the scissor-type telescopic frame, and the scissor-type telescopic frame is not easy to interfere with the rotating frame during the unfolding of the sofa bed.

[0019] The present invention is further configured as follows: a tension spring is provided between the connecting rod and the rotating rod, one end of the tension spring is connected to the connecting rod, and the other end is connected to the rotating rod.

[0020] By adopting the above technical solution, the tensioning spring is set, so that the rotating frame can be automatically retracted after losing the force of the pushing block, and there is no need to use the mobile frame to push the rotating frame to rotate, thereby reducing the friction between the mobile frame and the rotating frame; at the same time, after the rotating frame rotates a certain angle, the tensioning spring contracts to a natural state, and when the rotating frame continues to rotate, the tensioning spring will exert a reaction force on the rotating frame, which has a buffering effect on the rotating frame. The overall weight of the rotating frame and the cushion will be greater than the reaction force of the tensioning spring, so that when the rotating frame is about to collide with the second limit block, the rotation speed will be slowed down, and the impact force between the rotating frame and the second limit block will be reduced, so that the overall structure is not easily damaged during long-term use, and the noise generation is reduced.

[0021] The present invention is further configured as follows: the two ends of the tension spring are respectively hooked, the connecting rod is provided with a fixing rod, the rotating rod is provided with a plurality of positioning rods along its length direction, the hook at one end of the tension spring is hooked to the fixing rod, and the hook at the other end is hooked to the positioning rod.

[0022] By adopting the above technical solution, the hook can be hooked on a suitable positioning rod according to the weight of different sofa cushions, so that the rotating frame can be automatically folded smoothly and slowly. Such a sofa bed frame can hold sofa cushions of different weights, thereby expanding its scope of use.

[0023] A sofa bed comprises the above-mentioned sofa bed frame, wherein the rotating frame is provided with a first cushion body, the movable frame is provided with a second cushion body, and the main frame is provided with a backrest.

[0024] In summary, the beneficial technical effects of the present invention are:

[0025] When opening the sofa bed, you only need to pull the moving frame outward. After the moving frame moves a certain distance, it will drive the rotating frame to flip over. After the rotating frame flips out, it will connect with the moving frame to form a bed body. This structure enables the moving frame and the rotating frame to be linked, which is simpler and more convenient to operate.

[0026] The mobile frame is driven to move and the rotating frame is driven to rotate by the electric cylinder, and the mobile frame and the rotating frame can be positioned when the electric cylinder stops working, so the overall operation is simpler and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the first embodiment.

[0028] Figure 2 yes Figure 1 A partial enlarged schematic diagram of part B.

[0029] Figure 3 It is a schematic diagram of the structure of the rotating frame after it is unfolded in the first embodiment.

[0030] Figure 4 yes Figure 1 A partial enlarged schematic diagram of part A.

[0031] Figure 5 It is a schematic diagram of the structure of the rotating frame after being folded in the first embodiment.

[0032] Figure 6 It is a schematic diagram of the three-dimensional structure of the second embodiment after being unfolded.

[0033] Figure 7 It is a schematic diagram of the structure of the folded embodiment 2.

[0034] Figure 8 It is a structural schematic diagram of the prior art.

[0035] In the figure, 1, main frame; 2, mobile frame; 21, first frame; 22, second frame; 3, rotating frame; 31, rotating rod; 32, rotating arm; 33, connecting rod; 34, driving rod; 35, rotating shaft; 36, guide wheel; 37, guide rail; 4, pushing block; 5, hysteresis gap; 6, positioning mechanism; 61, electric cylinder; 7, bed body; 8, scissor-type telescopic frame; 81, cross rod group; 811, first rod body; 812, second rod body; 9, first limit block; 10, second limit block; 11, tension spring; 12, draw hook; 13, fixing rod; 14, positioning rod; 15, sofa bed frame; 16, first cushion body; 17, second cushion body; 18, backrest; 19, slide rail; 20, pulley; 201, roller. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0037] Example 1: Reference Figure 1 and Figure 2 , is an electric sofa bed frame disclosed by the present invention, comprising a main frame 1, a mobile frame 2 and a rotating frame 3, wherein slide rails 19 are respectively arranged on the left and right sides of the main frame 1, pulleys 20 are rotatably arranged on the left and right inner side walls of one end of the mobile frame 2, and the two pulleys 20 are respectively rollingly arranged in the corresponding slide rails 19, and rollers 201 are respectively rotatably arranged on the left and right sides of the bottom of the other end of the mobile frame 2, and the rollers 201 are rollingly arranged on the ground. Such a structure enables the mobile frame 2 and the main frame 1 to achieve relative sliding.

[0038] The mobile frame 2 includes a first frame body 21 and a second frame body 22, the roller 201 and the pulley 20 are both arranged on the first frame body 21, the second frame body 22 is slidingly connected to the main frame body 1, and the sliding directions of the first frame body 21 and the second frame body 22 are the same; a scissors-type telescopic frame 8 is provided on the main frame body 1, one end of the scissors-type telescopic frame 8 is rotatably connected to the main frame body 1, and the other end is rotatably connected to the first frame body 21, the scissors-type telescopic frame 8 is rotatably connected to the second frame body 22, and the scissors-type telescopic frame 8 includes a plurality of groups of cross rod groups 81, the cross rod group 81 includes a first rod body 811 and a second rod body 812 rotatably and crossably connected to the first rod body 811, the two ends of the first rod body 811 are respectively rotatably connected to the two adjacent second rod bodies 812, and the two ends of the second rod body 812 are respectively rotatably connected to the adjacent first rod body 811.

[0039] A positioning mechanism 6 is provided on the main frame 1, and the positioning mechanism 6 includes an electric cylinder 61 fixed on the main frame 1, and the output end of the electric cylinder 61 is fixed to the second frame 22, and the electric cylinder 61 can push the second frame 22 to move, and then push the first frame 21 to move through the scissors-type telescopic frame 8. At the same time, the distance from the rotation point between the scissors-type telescopic frame 8 and the second frame 22 to the fixed point between the scissors-type telescopic frame 8 and the main frame 1 is smaller than the distance from the rotation point between the scissors-type telescopic frame 8 and the first frame 21 to the fixed point between the scissors-type telescopic frame 8 and the main frame 1. In this way, when the first frame 21 and the second frame 22 move, the first frame 21 moves faster than the second frame 22.

[0040] like Figure 1 and Figure 3 As shown, two rotating frames 3 are provided, which are respectively arranged on the left and right sides of the main frame body 1. The rotating frame 3 includes a rotating rod 31 and a rotating arm 32 rotatably connected to the main frame body 1. A connecting rod 33 is provided between the rotating rod 31 and the rotating arm 32. The connecting rod 33 is rotatably connected to the rotating rod 31 and the rotating arm 32 respectively. A fixed rod 13 is fixed on the connecting rod 33. Three positioning rods 14 are fixed on the rotating rod 31. The three positioning rods 14 are arranged along the length direction of the rotating rod 31. A tensioning spring 11 is provided between the fixed rod 13 and the rotating rod 31. Hooks 12 are respectively provided at both ends of the tensioning spring 11. The hook 12 at one end of the tensioning spring 11 is hooked to the fixed rod 13, and the hook 12 at the other end is hooked to one of the positioning rods 14.

[0041] like Figure 3 and Figure 4As shown, a guide rail 37 is provided on the inner wall of the main frame 1, a guide wheel 36 is rotatably provided in the guide rail 37, a rotating shaft 35 is rotatably provided at the rotation center of the guide wheel 36, the rotating shaft 35 extends outside the guide wheel 36, a driving rod 34 is rotatably provided on the rotating arm 32, the driving rod 34 is rotatably connected to the rotating shaft 35 relative to the other end connected to the rotating arm 32, and a pushing block 4 is fixed on the second frame 22. When the sofa bed is fully unfolded, the pushing block 4 is hooked on the rotating shaft 35, and when the sofa bed is folded, the pushing block 4 is separated from the rotating shaft 35, and a hysteresis gap 5 is left between the pushing block 4 and the rotating shaft 35. In the process of unfolding the sofa bed, the electric cylinder 61 initially drives the moving frame 2 to move, and the pushing block 4 will be hooked on the rotating shaft 35 after moving over the hysteresis gap 5, thereby driving the rotating frame 3 to rotate.

[0042] like Figure 3 and Figure 5 As shown, a first limit block 9 and a second limit block 10 are fixedly provided on the connecting rod 33. The first limit block 9 is arranged close to the rotating arm 32, and the second limit block 10 is arranged close to the rotating rod 31. When the electric cylinder 61 pushes the rotating frame 3 to be fully unfolded, the first limit block 9 abuts against the rotating arm 32. At this time, the first limit block 9 will limit the rotating frame 3 from continuing to rotate. Subsequently, the mobile frame 2 and the rotating frame 3 can be positioned by turning off the electric cylinder 61. After positioning, the mobile frame 2 and the rotating frame 3 can be combined into a bed body 7; when the sofa bed is folded, the rotating rod 31 abuts against the second limit block 10, and the second limit block 10 also plays a limiting role on the rotating frame 3 during the rotation process.

[0043] The implementation principle of this embodiment is: when it is necessary to change from the sofa state to the bed state, the second frame 22 and the first frame are pushed outward by the electric cylinder 61. In this process, the moving speed of the first frame 21 will be greater than the moving speed of the second frame 22. When the first frame 21 and the cushion on the first frame 21 move to a point where they do not interfere with the rotation of the rotating frame 3, the pushing block 4 will be hooked onto the rotating shaft 35, thereby driving the rotating frame 3 to rotate. When the rotating arm 32 contacts the first limit block 9, the entire rotating frame 3 and the mobile frame 2 will stop moving. At this time, the operation of the electric cylinder 61 can be stopped. The electric cylinder 61 can play a positioning role for the rotating frame 3 and the mobile frame 2. The unfolded mobile frame 2 and the rotating frame 3 can be combined into a bed body 7, which can be used normally after the cushion is placed.

[0044] When it is necessary to change from the bed state to the sofa state, the second frame 22 and the first frame 21 are moved back through the electric cylinder 61, and the pushing block 4 on the second frame 22 and the rotating shaft 35 are also separated. After the pushing block 4 loses the force on the rotating shaft 35, the rotating frame 3 will automatically rotate and lean against the second limit block 10 under the action of its own gravity and the tension spring 11, and then it can be used as a sofa.

[0045] Embodiment 2: Figure 6 and Figure 7 As shown, a sofa bed disclosed in the present invention comprises the sofa bed frame 15 in the first embodiment, a second cushion body 17 is fixedly provided on the movable frame 2 by bolts, a first cushion body 16 is fixedly provided on the rotating frame 3 by bolts, and a backrest 18 is fixedly provided on the main frame 1.

[0046] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric sofa bed frame, comprising a main frame (1), a movable frame (2) and a rotating frame (3), wherein the movable frame (2) is slidably connected to the main frame (1), and the rotating frame (3) is rotatably connected to the main frame (1), characterized in that: The mobile frame (2) is provided with a push block (4) which acts on the rotating frame (3) and drives the rotating frame (3) to rotate as the mobile frame (2) moves, and a hysteresis gap (5) is left between the push block (4) and the rotating frame (3). The main frame body (1) is provided with a positioning mechanism (6) for positioning the mobile frame (2) and the rotating frame (3). After the rotating frame (3) is turned over, it docks with the mobile frame (2) to form a bed body (7); During the process of switching from the sofa state to the bed state, the pushing block (4) slides in the hysteresis gap (5), and after the moving frame (2) moves away from above the rotating frame (3), the pushing block (4) can hook the rotating frame (3) and drive the rotating frame (3) to rotate; The mobile frame (2) comprises a first frame (21) and a second frame (22) which are respectively connected to the main frame (1) in a sliding manner, the pushing block (4) is arranged on the second frame (22), and the main frame (1) is provided with a scissor-type telescopic frame (8), and the distance from the rotation point between the scissor-type telescopic frame (8) and the second frame (22) to the fixed point between the scissor-type telescopic frame (8) and the main frame (1) is smaller than the distance from the rotation point between the scissor-type telescopic frame (8) and the first frame (21) to the fixed point between the scissor-type telescopic frame (8) and the main frame (1).

2. The electric sofa bed frame according to claim 1, characterized in that: One end of the scissor-type telescopic frame (8) is rotatably connected to the main frame body (1), and the other end is rotatably connected to the first frame body (21); the scissor-type telescopic frame (8) is rotatably connected to the second frame body (22).

3. The electric sofa bed frame according to claim 2, characterized in that: The rotating frame (3) comprises a rotating rod (31) and a rotating arm (32) which are respectively rotatably connected to the main frame body (1); a connecting rod (33) is provided between the rotating rod (31) and the rotating arm (32); the connecting rod (33) is rotatably connected to the rotating rod (31) and the rotating arm (32) respectively; the rotating arm (32) is provided with a driving rod (34); one end of the driving rod (34) is rotatably connected to the rotating arm (32); the other end is rotatably provided with a rotating shaft (35); the rotating shaft (35) is rotatably provided with a guide wheel (36); the main frame body (1) is provided with a guide rail (37); the guide wheel (36) is rotatably arranged in the guide rail (37); the sliding direction of the rotating shaft (35) is the same as the sliding direction of the moving frame (2); when the rotating frame (3) rotates, the pushing block (4) is hooked on the rotating shaft (35).

4. The electric sofa bed frame according to claim 3, characterized in that: The positioning mechanism (6) comprises an electric cylinder (61), the electric cylinder (61) is fixedly mounted on the main frame (1), and the output end of the electric cylinder (61) is fixed to the second frame (22).

5. The electric sofa bed frame according to claim 4, characterized in that: The connecting rod (33) is provided with a first limit block (9), and when the rotating frame (3) is turned over and fully unfolded, the first limit block (9) abuts against the rotating arm (32).

6. The electric sofa bed frame according to claim 4, characterized in that: The connecting rod (33) is provided with a second limit block (10), and after the rotating frame (3) rotates and retracts, the second limit block (10) abuts against the rotating rod (31).

7. The electric sofa bed frame according to claim 4, characterized in that: A tension spring (11) is provided between the connecting rod (33) and the rotating rod (31); one end of the tension spring (11) is connected to the connecting rod (33), and the other end is connected to the rotating rod (31).

8. The electric sofa bed frame according to claim 7, characterized in that: The tension spring (11) has hooks (12) at both ends, the connecting rod (33) is provided with a fixing rod (13), the rotating rod (31) is provided with a plurality of positioning rods (14) along its length direction, the hook (12) at one end of the tension spring (11) is hooked to the fixing rod (13), and the hook (12) at the other end is hooked to the positioning rod (14).

9. A sofa bed, characterized by: It comprises an electric sofa bed frame (15) as described in any one of claims 1 to 8, wherein the rotating frame (3) is provided with a first cushion body (16), the movable frame (2) is provided with a second cushion body (17), and the main frame (1) is provided with a backrest (18).

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