A sofa bed backrest translation conversion device

Abstract

The utility model relates to the technical field of sofa bed, especially a sofa bed backrest translation conversion device, including sofa frame, the inside of sofa frame is installed with first folding pad and second folding pad, first folding pad with second folding pad is arranged in the upper and lower stack, the rear end of first folding pad in the lower part is rotatably installed with backrest frame through hinge, still include: backrest support swivel ring subassembly, backrest support swivel ring subassembly includes sleeve, one end of sleeve is slidably sleeved with sleeve rod, the back of backrest frame is installed with the placement groove, sleeve can be connected in the inside of placement groove, the rear end of sofa frame is provided with the slot, sleeve rod can be connected in the inside of slot, this sofa bed backrest translation conversion device has solved the shortcoming that sofa backrest cannot be unfolded to realize the form conversion in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of sofa bed technology, and in particular to a sofa bed backrest translation conversion device. Background Technology

[0002] A sofa bed is a piece of furniture that can transform into a sofa and a bed. Currently, only the seat cushion of a sofa bed can be unfolded; the backrest cannot be unfolded to achieve the transformation, which limits the further expansion of the sofa bed's shape and size. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies where sofa backrests cannot be unfolded to achieve form transformation, and to propose a sofa bed backrest translation and transformation device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] Design a sofa bed backrest sliding conversion device, including a sofa frame, on the inner side of which a first folding cushion and a second folding cushion are installed, the first folding cushion and the second folding cushion are stacked one on top of the other, and the backrest frame is mounted to the rear end of the lower first folding cushion via a hinge, and also includes:

[0006] The backrest support swivel assembly includes a sleeve, one end of which is slidably fitted with a sleeve rod. A placement groove is installed on the back of the backrest frame, and the sleeve can be engaged inside the placement groove. A slot is opened at the rear end of the sofa frame, and the sleeve rod can be engaged inside the slot. A swivel groove is also opened on the back of the backrest frame, and a connecting rod is rotatably installed inside the swivel groove via a rotating shaft. One end of the sleeve rod can be inserted and fixed to the connecting rod.

[0007] Preferably, a spring clip is installed between the sleeve and the rod, and the extension and retraction lengths of the sleeve and the rod are adjusted by the spring clip.

[0008] Preferably, a rotating ball is rotatably fitted at the bottom of the sleeve, and a support pad is integrally formed at one end of the rotating ball. The support pad is used to contact the ground to provide support.

[0009] Preferably, the top end of the sleeve is provided with a threaded groove, which is threadedly connected to the connecting rod.

[0010] Preferably, the inner end face of the slot is fixedly mounted with a plug post by bolts, and the plug post can be inserted into the inside of the threaded slot.

[0011] Preferably, an elastic metal sheet is elastically installed inside the rotating groove, and the connecting rod can be rotatably stored inside the rotating groove.

[0012] The sofa bed backrest translation conversion device proposed in this utility model has the following advantages:

[0013] By connecting the backrest frame and the first folding cushion via hinges, the backrest frame can be unfolded along the first fold, forming the headboard and the second folding cushion forming the footboard, thus further increasing the unfolded area of ​​the sofa bed and expanding its usable form.

[0014] The sleeve and rod combination can be used as a support leg when the backrest frame is unfolded, and as a limiting rod when the backrest frame is upright, so as to facilitate the transformation of the backrest frame. Attached Figure Description

[0015] Figure 1 A schematic diagram of the main body in a forward-facing three-dimensional structure;

[0016] Figure 2 A schematic diagram of the three-dimensional structure facing away from the main body;

[0017] Figure 3 for Figure 2 A magnified structural diagram of area A;

[0018] Figure 4 This is a schematic diagram of the front three-dimensional structure of the sleeve and rod assembly;

[0019] Figure 5 A schematic diagram of the three-dimensional structure of the sleeve and rod assembly from the opposite direction;

[0020] Figure 6 This is a three-dimensional structural diagram of a hinge.

[0021] In the diagram: 1. Sofa frame; 2. First folding cushion; 3. Second folding cushion; 4. Backrest frame; 5. Hinge; 6. Slot; 7. Insertion post; 8. Placement slot; 9. Sleeve; 10. Sleeve rod; 11. Rotating ball; 12. Support pad; 13. Threaded hole groove; 14. Spring buckle; 15. Rotating groove; 16. Connecting rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1

[0024] Reference Figures 1-6A sofa bed backrest sliding conversion device includes a sofa frame 1, with a first folding cushion 2 and a second folding cushion 3 installed on the inner side of the sofa frame 1. The first folding cushion 2 and the second folding cushion 3 are stacked one on top of the other. The rear end of the lower first folding cushion 2 is rotatably mounted to the backrest frame 4 via a hinge 5. The device also includes:

[0025] The backrest support rotating ring assembly includes a sleeve 9, one end of which is slidably fitted with a sleeve rod 10. The back of the backrest frame 4 is provided with a placement groove 8, and the sleeve 9 can be snapped into the inside of the placement groove 8. The rear end of the sofa frame 1 is provided with a slot 6, and the sleeve rod 10 can be snapped into the inside of the slot 6. The back of the backrest frame 4 is also provided with a rotating groove 15, and a connecting rod 16 is rotatably installed inside the rotating groove 15 via a rotating shaft. One end of the sleeve rod 10 can be inserted and fixed with the connecting rod 16.

[0026] Furthermore, refer to Figure 4 , Figure 5 A spring clip 14 is installed between the sleeve 9 and the sleeve rod 10, and the extension length of the sleeve 9 and the sleeve rod 10 is adjusted by the spring clip 14.

[0027] Furthermore, refer to Figure 5 The bottom of the sleeve 9 is fitted with a rotating ball 11, and one end of the rotating ball 11 is integrally formed with a support pad 12, which is used to contact the ground and provide support.

[0028] Furthermore, refer to Figure 4 The top end of the sleeve rod 10 is provided with a threaded groove 13, and the threaded groove 13 is threadedly connected to the connecting rod 16.

[0029] Furthermore, refer to Figure 3 The inner end face of the slot 6 is fixedly installed with a plug post 7 by bolts, and the plug post 7 can be inserted into the inside of the threaded slot 13.

[0030] Furthermore, an elastic metal sheet is elastically installed inside the rotating groove 15, and the connecting rod 16 can be rotatably stored inside the rotating groove 15.

[0031] Working principle:

[0032] Form 1: Unfold the second folding cushion 3 along the outer end of the first folding cushion 2 and lay the backrest frame 4 flat. At this time, the backrest frame 4 can be used as the headboard and the second folding cushion 3 as the footboard to form a larger bed. The armrests on both sides of the sofa frame 1 can be used as anti-fall structures to improve the installation of the sofa.

[0033] Form 2: The second folding pad 3 is unfolded along the outer end of the first folding pad 2, while the backrest frame 4 remains upright. At this time, the two ends of the first folding pad 2 and the second folding pad 3 can be used as the headboard and footboard to form a smaller bed.

[0034] When the backrest frame 4 needs to be laid flat: remove the sleeve 9 and sleeve rod 10 assembly upwards, so that the sleeve 9 is disengaged from the placement groove 8 and the sleeve rod 10 is disengaged from the slot 6. Rotate the connecting rod 16 out of the rotating groove 15 and thread the sleeve rod 10 into the threaded hole groove 13 and the connecting rod 16. Since the backward rotation of the backrest frame 4 is no longer restricted by the sleeve 9 and sleeve rod 10 assembly, the backrest frame 4 can be rotated flat along the hinge 5. After flattening, adjust the distance between the sleeve 9 and sleeve rod 10 using the spring clip 14. The telescopic length is adjusted such that when the sleeve 9 and the sleeve rod 10 assembly is extended, there is a large slope between the backrest frame 4 and the first folding pad 2. When the sleeve 9 and the sleeve rod 10 assembly is shortened, the slope between the backrest frame 4 and the first folding pad 2 gradually decreases until the backrest frame 4 and the first folding pad 2 are flush. During the adjustment of the telescopic length between the sleeve 9 and the sleeve rod 10, the rotatable connecting rod 16, the rotating ball 11 and the support pad 12 enable the support pad 12 to maintain complete contact with the ground, thereby improving stability.

[0035] When the backrest frame 4 needs to be erected: rotate the sleeve rod 10 to disengage it from the connecting rod 16. Then, the sleeve 9 and the sleeve rod 10 are retracted to their minimum length by the spring clip 14. Then, the sleeve 9 is placed in the placement groove 8 and the sleeve rod 10 is placed in the slot 6, so that the insertion post 7 set in the slot 6 is inserted into the threaded hole groove 13. At this time, the combination of sleeve 9 and sleeve rod 10 acts as a block for the backrest frame 4, so that the backrest frame 4 cannot tilt backward to form the function of a sofa backrest.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sofa bed backrest sliding conversion device, comprising a sofa frame (1), wherein a first folding pad (2) and a second folding pad (3) are installed on the inner side of the sofa frame (1), the first folding pad (2) and the second folding pad (3) being stacked vertically, characterized in that: The backrest frame (4) is mounted to the rear end of the first folding cushion (2) located below via a hinge (5), and also includes: The backrest support rotating ring assembly includes a sleeve (9), one end of which is slidably fitted with a sleeve rod (10). The back of the backrest frame (4) is equipped with a placement groove (8), and the sleeve (9) can be snapped into the inside of the placement groove (8). The rear end of the sofa frame (1) is provided with a slot (6), and the sleeve rod (10) can be snapped into the inside of the slot (6). The back of the backrest frame (4) is also provided with a rotating groove (15), and a connecting rod (16) is rotatably installed inside the rotating groove (15) through a rotating shaft. One end of the sleeve rod (10) can be inserted and fixed with the connecting rod (16).

2. The sofa bed backrest translation conversion device according to claim 1, characterized in that: A spring clip (14) is installed between the sleeve (9) and the sleeve rod (10), and the extension length of the sleeve (9) and the sleeve rod (10) is adjusted by the spring clip (14).

3. The sofa bed backrest translation conversion device according to claim 1, characterized in that: The bottom of the sleeve (9) is rotatably fitted with a ball (11), and one end of the ball (11) is integrally formed with a support pad (12), which is used to contact the ground to provide support.

4. The sofa bed backrest translation conversion device according to claim 1, characterized in that: The top end of the sleeve (10) is provided with a threaded groove (13), and the threaded groove (13) is threadedly connected to the connecting rod (16).

5. A sofa bed backrest translation conversion device according to claim 4, characterized in that: The inner end face of the slot (6) is fixedly installed with a plug post (7) by bolts, and the plug post (7) can be inserted into the inside of the threaded slot (13).

6. The sofa bed backrest translation conversion device according to claim 1, characterized in that: The rotating groove (15) is elastically fitted with an elastic metal sheet, and the connecting rod (16) can be rotatably stored inside the rotating groove (15).

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