Manual backrest bending and lifting function device

Abstract

The utility model discloses a manual backrest bending and lifting function device which comprises a first installation area and a second installation area. One end of the folding area is rotationally matched with the first mounting area; one end of the bending area is rotationally matched with the turnover area, and the bending area comprises a plurality of hinged rotating pieces; and the second mounting area is rotationally matched on the bending area, so that the backrest part can be bent inwards and can also be turned over or lifted, and the product has different heights.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture, and particularly relates to a manual backrest bending and lifting function device. Background Art

[0002] The backrest of a sofa is a common component in the sofa structure. The backrest structure of an ordinary wooden sofa is fixedly arranged and cannot move. In the prior art, there is a sofa with an adjustable backrest angle. For example, a sofa with an application number of 201811241843.5 and a name of a sofa with an arbitrarily adjustable backrest angle can achieve arbitrary angle adjustment of the backrest through its sofa frame assembly and angle adjustment mechanism, but it cannot achieve the bending function of the backrest. Summary of the Utility Model

[0003] To solve the above technical problems, the utility model provides a manual backrest bending and lifting function device, which can not only make the backrest part bend inward, but also make the backrest part fold or lift, so that the product has different heights.

[0004] The utility model adopts the following technical solutions:

[0005] A manual backrest bending and lifting function device includes: a first installation area; a folding area, one end of which is rotatably fitted on the first installation area; a bending area, one end of which is rotatably fitted on the folding area and includes several hinged rotating pieces; a second installation area, rotatably fitted on the other end of the bending area, which can not only make the backrest bend inward, but also make the whole backrest fold or lift, so that the product has different heights.

[0006] Preferably, the bending area can rotate relative to the folding area to make the function device in the first state. In the first state, the included angle range between several rotating pieces is 0-55°, that is, each rotating piece rotates a certain angle, so that the sofa backrest can be bent; among them, the bending degree of the sofa backrest can be controlled by manually controlling the rotation angle of the rotating piece.

[0007] Preferably, the folding area can rotate relative to the first installation area to make the function device in the second state. In the second state, the included angle range between the folding area and the first installation area is 0-90°, that is, the folding area can rotate, driving the bending area, the second installation area and the whole installation frame to fold or lift, realizing the folding or lifting of the sofa backrest.

[0008] Preferably, the end of the rotating piece is provided with a first limiting tooth, and adjacent rotating pieces are engaged and limited through the first limiting tooth.

[0009] Preferably, the folding area and one end of the second installation area are provided with a second limiting tooth and a third limiting tooth that match the first limiting tooth, and the folding area, the bending area, and the second installation area are limited by meshing through the respective limiting teeth.

[0010] Preferably, the bending area includes two rows of rotating sheets arranged in a staggered manner, and the adjacent rotating sheets arranged in a staggered manner are hinged by a rotating shaft, which can improve the stability of the bending area and prevent the rotating sheets from shaking or being displaced.

[0011] Preferably, a friction sheet is provided on the rotating shaft, which can improve the connection stability between the rotating sheets 3.

[0012] Preferably, the second installation area includes a connecting portion that is twisted by 90 degrees, and an installation frame is installed on the connecting portion, and the installation frame is connected between the components on the left and right sides to improve the overall stability.

[0013] Compared with the prior art, the present utility model has the following advantages: The present utility model provides a manual backrest bending and lifting function device, which can not only bend the backrest part inward, but also fold or lift the backrest part, so that the product has different heights. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of the function device of the present utility model.

[0015] Figure 2 It is a schematic structural diagram of the folding area.

[0016] Figure 3 It is a schematic connection structure diagram of the rotating sheet.

[0017] Figure 4 It is a schematic structural diagram of the second installation area.

[0018] Figure 5 It is a schematic use diagram of the first state of the function device.

[0019] Figure 6 It is a schematic diagram of the first state of the function device.

[0020] Figure 7 It is a schematic use diagram of the second state of the function device.

[0021] Figure 8 It is a schematic diagram of the second state of the function device.

[0022] In the figure, the first installation area 1, the folding area 2, the second limiting tooth 2-1, the bending area 3, the rotating sheet 3-1, the first limiting tooth 3-2, the rotating shaft 3-3, the friction sheet 3-4, the second installation area 4, the third limiting tooth 4-1, the connecting portion 4-2, the installation frame 5. Detailed Embodiments

[0023] For the convenience of understanding the technical solution of the present utility model, the following will be described in detail in conjunction with the drawings and specific embodiments.

[0024] Embodiment 1

[0025] As Figure 1 shown, a manual backrest folding and lifting function device includes a first installation area 1, a folding area 2, a bending area 3, a second installation area 4, and a mounting bracket 5;

[0026] The first installation area 1 includes a connecting rod connected to the sofa body, and one end of the connecting rod is provided with a first hinge hole;

[0027] As Figure 2 shown, one end of the folding area 2 is rotatably fitted on the first hinge hole of the first installation area 1, and the other end is provided with a second limit tooth 2-1 and a second hinge hole;

[0028] As Figure 3 shown, the bending area 3 is rotatably fitted on the second hinge hole of the folding area 2 and includes a plurality of hinged rotating pieces 3-1;

[0029] As Figure 4 shown, the second installation area 4 is rotatably fitted on the other end of the bending area 3;

[0030] The mounting bracket 5 is arranged on the second installation area 4.

[0031] Backrest sponges are provided on the folding area 2, the bending area 3, the second installation area 4, and the mounting bracket 5. During use, the folding area 2 can rotate to drive the overall folding or lifting of the bending area 3, the second installation area 4, and the mounting bracket 5, realizing the folding or lifting of the sofa backrest. The rotating pieces 3-1 of the bending area 3 can all rotate relative to each other, thereby realizing the bending of the sofa backrest.

[0032] As Figures 5 - 6 shown, the bending area 3 can rotate relative to the folding area 2 to cause the function device to be in the first state. In the first state, there is a certain included angle between the plurality of rotating pieces 3-1, that is, each rotating piece 3-1 rotates a certain angle, so that the sofa backrest can be bent. Among them, the bending degree of the sofa backrest can be controlled by manually controlling the rotation angle of the rotating piece 3-1, and the included angle range between adjacent rotating pieces 3-1 is 0~55°.

[0033] As Figures 7 - 8As shown in the figure, the folding area 2 can rotate relative to the first installation area 1, causing the functional device to be in the second state. In the second state, there is a certain angle between the folding area 2 and the first installation area 1, that is, the folding area 2 can rotate, driving the bending area 3, the second installation area 4 and the mounting bracket 5 to fold or lift as a whole, realizing the folding or lifting of the sofa backrest. Among them, the angle range between the folding area 2 and the first installation area 1 is 0 to 90°.

[0034] As Figure 3 shown in the figure, in this embodiment, the bending area 3 includes two rows of rotating pieces 3-1 arranged in a staggered manner. Each row of rotating pieces 3-1 has 4 pieces. For example, a rotating piece 3-1 is provided in the middle below any two adjacent rotating pieces 3-1 in the first row; the adjacent rotating pieces 3-1 arranged in a staggered manner are hinged through a rotating shaft 3-3, which can improve the stability of the bending area 3 and prevent the rotating pieces 3-1 from shaking or being misaligned. In addition, in order to further improve the connection stability between the rotating pieces 3-1, a friction piece 3-4 can be provided on the rotating shaft 3-3.

[0035] The end of the rotating piece 3-1 is provided with a first limiting tooth 3-2, and the folding area 2 and one end of the second installation area 4 are provided with a second limiting tooth 2-1 and a third limiting tooth 4-1 that match the first limiting tooth 3-2, that is, the folding area 2, the bending area 3, and the second installation area 4 are engaged and limited through the above-mentioned limiting teeth.

[0036] The second installation area 4 includes a connecting portion 4-2 that is twisted by 90 degrees, and the mounting bracket 5 is installed on the connecting portion 4-2.

[0037] Embodiment 2

[0038] The difference between Embodiment 2 and Embodiment 1 is that the bending area 3 includes two rows of rotating pieces 3-1 arranged in a staggered manner. Each row of rotating pieces 3-1 has 5 pieces. The adjacent rotating pieces 3-1 arranged in a staggered manner are hinged through a rotating shaft 3-3, which can improve the stability of the bending area 3 and prevent the rotating pieces 3-1 from shaking or being misaligned.

[0039] Actually, according to the requirements for the backrest length and the bending angle, different numbers of rotating pieces 3-1 can be set. The more the number of rotating pieces 3-1, the longer the backrest length and the larger the bending angle range.

[0040] The above is only the preferred embodiment of the present invention. The protection scope of the present invention is subject to the scope defined by the claims. Several improvements and modifications made by those skilled in the art without departing from the spirit and scope of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A manual backrest bending and lifting function device, characterized in that, Comprising: A first installation area (1); A folding area (2), one end of which is rotatably fitted on the first installation area (1); A bending area (3), one end of which is rotatably fitted on the folding area (2), and includes a plurality of hinged rotating pieces (3-1); A second installation area (4), rotatably fitted on the other end of the bending area (3).

2. The manual backrest bending and lifting function device according to claim 1, characterized in that, The bending area (3) can rotate relative to the folding area (2) to cause the functional device to be in a first state. In the first state, the included angle range between several of the rotating pieces (3-1) is 0 to 55°.

3. The manual backrest bending and lifting function device according to claim 1, wherein The folding area (2) can rotate relative to the first installation area (1) to cause the functional device to be in a second state. In the second state, the included angle range between the folding area (2) and the first installation area (1) is 0 to 90°.

4. The manual backrest bending and lifting function device according to claim 1, characterized in that, A first limiting tooth (3-2) is provided at the end of the rotating piece (3-1).

5. The manual backrest bending and lifting function device according to claim 4, characterized in that A second limiting tooth (2-1) and a third limiting tooth (4-1) that match the first limiting tooth (3-2) are provided at one end of the folding area (2) and the second installation area (4).

6. The manual backrest bending and lifting function device according to claim 1, wherein The bending area (3) includes two rows of rotating pieces (3-1) arranged in a staggered manner, and the adjacent rotating pieces (3-1) arranged in a staggered manner are hinged by a rotating shaft (3-3).

7. The manual backrest bending and lifting function device according to claim 6, characterized in that, A friction piece (3-4) is provided on the rotating shaft (3-3).

8. The manual backrest bending and lifting function device according to any one of claims 1-7, characterized in that, The second installation area (4) includes a connecting portion (4-2) that is twisted by 90 degrees, and an installation bracket (5) is installed on the connecting portion (4-2).

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