Rotating structure of sofa backrest

Abstract

The utility model relates to a rotating structure of a sofa backrest, which comprises a rotating shaft used for being connected to the backrest, a base used for being fixed on a seat and a damping assembly used for limiting rotation of the rotating shaft, the rotating shaft penetrates through the base and is rotatably connected with the base, and the damping assembly is simultaneously connected to the rotating shaft and the base. The rotating shaft is matched with the base, so that the backrest connected to the rotating shaft can rotate in the horizontal direction, the position of the backrest of the sofa can be adjusted according to needs, the use space of the sofa is greatly improved, the sofa can lie down, and the personalized requirements of users are met.

Description

Technical Field

[0001] The present application relates to the technical field of sofas, and in particular to a rotating structure of a sofa backrest. Background Art

[0002] Among the new generation of consumer groups, the living room is gradually shifting from a reception and social center to a family sharing and entertainment center, and even "de-living rooming", turning it into a multi-functional space scene. Functional sofas are meeting the needs of young users with a more comfortable and intelligent user experience.

[0003] The Chinese patent application number discloses a sofa backrest rotation trajectory limiting mechanism, including a seat cushion lower bracket, a seat cushion upper bracket slidably arranged on the seat cushion lower bracket, and a backrest bracket rotatably arranged on the seat cushion upper bracket. The seat cushion lower bracket is provided with a rotating fixed support member, the rotating fixed support member is provided with a special-shaped hole, and the backrest bracket is provided with a first hinge member, which is slidably connected to the special-shaped hole.

[0004] In the above solution, the backrest of the sofa only has a lifting function, so that the backrest can only be rotated up and down at one position, and cannot be leaned on in different directions as needed.

[0005] Therefore, it is necessary to propose a new technical solution to solve the above problems. Utility Model Content

[0006] In order to enable the sofa backrest to rotate in the horizontal direction and to enable the backrest to be leaned on in different directions, the present application provides a rotating structure of the sofa backrest.

[0007] The present application provides a rotating structure of a sofa backrest, which adopts the following technical solution:

[0008] A rotating structure for a sofa backrest comprises a rotating shaft connected to the backrest, a base fixed to a seat and a damping component for limiting the rotation of the rotating shaft. The rotating shaft passes through the base and is rotationally connected to the base. The damping component is simultaneously connected to the rotating shaft and the base.

[0009] By adopting the above technical solution and utilizing the cooperation between the rotating shaft and the base, the backrest connected to the rotating shaft can be rotated in the horizontal direction, so that the position of the sofa backrest can be adjusted as needed, which greatly improves the use space of the sofa, and the sofa can be used for lying or lying down, meeting the personalized needs of users.

[0010] Optionally: the damping assembly includes a mounting plate connected to the rotating shaft, a damping fixing plate connected to the base, and a damping gasket arranged on the mounting plate, and the damping gasket is maintained in abutment with the damping fixing plate.

[0011] By adopting the above technical solution, the friction between the damping gasket and the damping fixing plate is used to hinder the rotation of the rotating shaft relative to the base, so that the card back can be stably located in a required position.

[0012] Optionally: the damping fixing plate is arranged below the damping gasket.

[0013] By adopting the above technical solution, the weight of the rotating shaft and the backrest itself is used to apply downward pressure to the damping gasket, so that the damping gasket can always maintain contact with the damping fixing plate, so that the damping gasket can still play a damping role after being worn.

[0014] Optionally: An adjustment component for adjusting the pressure between the damping gasket and the damping fixing plate is provided on the base, and the adjustment component includes a plurality of bolts passing through the base and nuts threadedly connected to the bolts, the bolts passing through the base and the damping fixing plate at the same time, and the nuts abut against the lower end surface of the damping fixing plate.

[0015] By adopting the above technical solution, the adjustment component is used to adjust the distance between the mounting plate and the damping fixing plate, thereby adjusting the friction between the damping gasket and the damping fixing plate, so that the damping gasket can still play a normal damping role after being worn.

[0016] Optionally: a plurality of positioning rods are fixed to the upper end of the damping gasket, a plurality of positioning grooves are opened circumferentially on the mounting plate, and the positioning rods are inserted into the positioning grooves.

[0017] By adopting the above technical solution, the damping gasket is directly connected to the mounting plate through the positioning rod, and after the damping gasket is worn, it is only necessary to directly remove the old damping gasket and replace it with a new damping gasket.

[0018] Optionally: The mounting plate is also provided with a limit assembly for limiting its rotation angle, the limit assembly includes a support plate coaxially fixed on the mounting plate, a fixed base plate fixed on the base, and a limit shaft arranged on the fixed base plate, the support plate is coaxially provided with a limit groove, and the limit shaft is arranged to slide in the limit groove.

[0019] By adopting the above technical solution, the rotation angle of the rotating shaft is limited by the limit assembly, so that the backrest can be rotated and limited within the required range, and after being rotated into place, the limit groove can be used to prevent the backrest from continuing to rotate and hinder it, so that the leaning of the backrest after being rotated into place is not easily affected.

[0020] Optionally: the support plate and the fixed base plate are both arranged at an end of the fixed plate away from the damping gasket, and the bolts are passed through the fixed base plate and the damping fixed plate.

[0021] By adopting the above technical solution, the limiting rod and the damping gasket are respectively located on both sides of the mounting plate, thereby reducing the space occupied by the overall mechanism when both the limiting rod and the damping gasket can be used.

[0022] Optionally: a gap is left between the support plate and the fixed base plate.

[0023] By adopting the above technical solution, when the support plate rotates relative to the fixed bottom plate, no friction is generated between the support plate and the fixed bottom plate, so that the rotation of the rotating shaft is not easily affected.

[0024] Optionally, the damping fixing plate is provided with a plurality of first fixing holes in the circumferential direction, and the mounting plate and the supporting plate are provided with a plurality of second fixing holes, and the axes of the second fixing holes can be aligned with the axes of the first fixing holes.

[0025] By adopting the above technical solution, during the transportation of the entire sofa, the pin and other fixing components can be inserted into the first fixing hole and the second fixing hole at the same time, so that the backrest will not rotate and the transportation process of the sofa is not easily affected.

[0026] Optionally: The base is provided with a connecting assembly for connecting it to the rotating shaft, and the connecting assembly includes an upper bushing, a bushing support tube and a lower bushing coaxially arranged on the rotating shaft, the bushing support tube is passed through the base, and the two ends of the bushing support tube are respectively fixed to the upper bushing and the lower bushing, the upper bushing is fixed to the base, and the lower bushing is fixed to the fixed base plate.

[0027] By adopting the above technical solution, after the angle between the rotating shaft and the lower end surface of the base changes, the damping component and the like will not be affected by the change in the angle of the rotating shaft and can still be used normally.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. By setting a rotating shaft and a base, the backrest of the sofa can be rotated in the horizontal direction, thereby improving the use space of the sofa and meeting different needs;

[0030] 2. Use the damping component to hinder the rotation of the shaft so that the shaft can remain stable when it rotates to a certain angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0032] Figure 2 This is an exploded view of an embodiment of the present application.

[0033] In the figure, 1, rotating shaft; 11, mounting shaft; 12, positioning pin; 2, base; 3, damping assembly; 31, mounting plate; 311, positioning groove; 312, second fixing hole; 32, damping fixing plate; 321, first fixing hole; 33, damping gasket; 331, positioning rod; 4, connecting assembly; 41, upper bushing; 42, bushing support tube; 43, lower bushing; 5, limiting assembly; 51, fixed bottom plate; 511, limiting groove; 52, support plate; 53, limiting shaft; 6, adjusting assembly; 61, bolt; 62, nut. DETAILED DESCRIPTION

[0034] The present application is further described in detail below in conjunction with the accompanying drawings.

[0035] The present application discloses a rotating structure of a sofa backrest, such as Figure 1 As shown, it includes a rotating shaft 1 for connecting to the backrest, a base 2 for fixing on the seat, and a damping assembly 3 for limiting the rotation of the rotating shaft 1. The rotating shaft 1 is arranged at one end of the backrest. The base 2 is fixed to the lower end surface of the seat by bolts 61, and the lower end surface of the base 2 can be set to be inclined to the horizontal plane or horizontal. In this embodiment, the lower end surface of the base 2 is set to be horizontal. The rotating shaft 1 is passed through the base 2 and rotates. The rotating shaft 1 can be set to an overall inclined state, so that the rotating shaft 1 can be adapted to the inclined backrest. The rotating shaft 1 can also be set to a state where the upper end is inclined and the lower end is vertical. In this embodiment, the rotating shaft 1 is set to an overall inclined state.

[0036] like Figure 2 As shown, the rotating shaft 1 is connected to the base 2 through a connecting assembly 4, and the connecting assembly 4 includes an upper bushing 41, a bushing support tube 42 and a lower bushing 43 coaxially sleeved on the rotating shaft 1. The upper bushing 41, the bushing support tube 42 and the lower bushing 43 are arranged vertically in sequence, and the upper end of the bushing support tube 42 is sleeved on the lower end of the upper bushing 41 with an interference fit, and the lower end of the bushing support tube 42 is sleeved on the upper end of the lower bushing 43 with an interference fit. The bushing support tube 42 is penetrated through the base 2, and the axis of the bushing support tube 42 is inclined to the lower end surface of the base 2. The upper bushing 41 is fixed to the upper end surface of the base 2 with screws, and the rotating shaft 1 rotates in the upper bushing 41, the bushing support tube 42 and the lower bushing 43.

[0037] A limit assembly 5 for limiting the rotation angle of the rotating shaft 1 is arranged between the lower bushing 43 and the rotating shaft 1, and the limit assembly 5 comprises a fixed bottom plate 51 coaxially fixed on the lower bushing 43, a support plate 52 coaxially fixed to the lower end of the rotating shaft 1, and a limit shaft 53 arranged on the fixed bottom plate 51. The fixed bottom plate 51 is coaxially sleeved outside the bushing support tube 42, and the fixed bottom plate 51 and the lower bushing 43 are fixed by screws. A limit groove 511 is also coaxially provided on the fixed bottom plate 51, and the curvature of the limit groove 511 can be set as required, such as selecting ninety degrees or one hundred and eighty degrees. In this embodiment, the curvature of the limit groove 511 is selected to be one hundred and eighty degrees. The rotating shaft 1 is hollow, and a mounting shaft 11 is coaxially fixed to the lower end of the rotating shaft 1 through a pin shaft. The support plate 52 is fixed to the lower end surface of the mounting shaft 11 by screws. A plurality of positioning pins 12 are circumferentially fixed to the lower end surface of the mounting shaft 11. The positioning pins 12 are inserted through the support plate 52, and a gap is left between the fixed bottom plate 51 and the support plate 52. The lower end of the limiting shaft 53 is inserted through the fixed bottom plate 51 and extends downward, and the upper end of the limiting shaft 53 is inserted through the limiting groove 511 and can move along the limiting groove 511, so that the rotation angle of the support plate 52 relative to the fixed bottom plate 51 is limited by the cooperation between the limiting shaft 53 and the limiting groove 511, thereby limiting the rotation angle of the rotating shaft 1.

[0038] The damping assembly 3 includes a mounting plate 31 coaxially fixed to the lower end of the support plate 52, a damping fixing plate 32 disposed below the mounting plate 31, and a damping gasket 33 connected to the lower end of the mounting plate 31. The damping gasket 33 is disposed between the mounting plate 31 and the damping fixing plate 32, the lower end of the damping gasket 33 abuts against the damping fixing plate 32, the upper end of the damping gasket 33 is coaxially integrally formed with a plurality of positioning rods 331, the mounting plate 31 is penetrated with a plurality of positioning grooves 311 corresponding to the positioning rods 331, the positioning rods 331 are penetrated in the positioning grooves 311 so that the damping gasket 33 can rotate synchronously with the mounting plate 31. The mounting plate 31 is fixed to the lower end surface of the support plate 52 by screws, and the lower end of the limit rod is penetrated on the mounting plate 31. The damping fixing plate 32 is abutted against the damping gasket 33, so that the friction between the damping fixing plate 32 and the damping gasket 33 is used to hinder the rotation of the rotating shaft 1, so that the backrest of the sofa can be kept fixed in a certain state. At the same time, the damping fixing plate 32 is also used to limit the position of the rotating shaft 1 relative to the connecting component 4.

[0039] like Figure 1 and Figure 2As shown, the damping fixing plate 32 is connected to the fixed base plate 51 through the adjustment component 6, and the adjustment component 6 includes a plurality of bolts 61 circumferentially penetrated on the fixed base plate 51 and nuts 62 threadedly connected to the bolts 61. The bolts 61 penetrate the fixed base plate 51 and the damping fixing plate 32 at the same time, and the heads of the bolts 61 abut against the upper end surface of the fixed base plate 51. The nuts 62 are arranged below the damping fixing plate 32, and the upper end surface of the nuts 62 abut against the lower end surface of the damping fixing plate 32. By adjusting the bolts 61 and the nuts 62, the distance between the damping fixing plate 32 and the fixed base plate 51 is adjusted, thereby adjusting the distance between the mounting plate 31 and the damping fixing plate 32, and realizing the adjustment of the friction between the damping fixing plate 32 and the damping gasket 33.

[0040] like Figure 2 As shown, in order to keep the rotating shaft 1 relatively fixed during the transportation of the sofa, four first fixing holes 321 are circumferentially opened on the damping fixing plate 32, and two second fixing holes 312 are circumferentially opened on the mounting plate 31 and the supporting plate 52. When the backrest is rotated to the normal backrest position of the seat, the axes of the two second fixing holes 312 coincide with the axes of the two first fixing holes 321, so that the rotating shaft 1 can be limited by fixing components such as pins, so that the backrest will not rotate during the overall movement of the sofa.

[0041] The implementation principle of this embodiment is as follows: when the backrest is rotated, the rotation is relative to the bushing support tube 42, and the damping pad 33 is driven to rotate. After the rotation is in place, the damping pad 33 remains in contact with the damping fixing plate 32, so that the position of the rotating shaft 1 is kept limited under the limitation of friction. When the damping pad 33 becomes thinner after long-term use, the nut 62 is rotated to shorten the distance between the fixed bottom plate 51 and the damping fixing plate 32, so that the damping pad 33 can be used normally.

[0042] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A rotating structure of a sofa backrest, characterized in that: The invention comprises a rotating shaft (1) for connecting to a backrest, a base (2) for fixing to a seat, and a damping component (3) for limiting the rotation of the rotating shaft (1); the rotating shaft (1) is passed through the base (2) and is rotationally connected to the base (2); and the damping component (3) is simultaneously connected to the rotating shaft (1) and the base (2).

2. The rotating structure of a sofa backrest according to claim 1, characterized in that: The damping assembly (3) comprises a mounting plate (31) connected to the rotating shaft (1), a damping fixing plate (32) connected to the base (2), and a damping gasket (33) arranged on the mounting plate (31), wherein the damping gasket (33) is in abutment with the damping fixing plate (32).

3. The rotating structure of a sofa backrest according to claim 2, characterized in that: The damping fixing plate (32) is arranged below the damping gasket (33).

4. The rotating structure of a sofa backrest according to claim 3, characterized in that: The base (2) is provided with an adjustment component (6) for adjusting the pressure between the damping gasket (33) and the damping fixing plate (32), the adjustment component (6) comprising a plurality of bolts (61) passing through the base (2) and nuts (62) threadedly connected to the bolts (61), the bolts (61) passing through the base (2) and the damping fixing plate (32) at the same time, and the nuts (62) abutting against the lower end surface of the damping fixing plate (32).

5. The rotating structure of a sofa backrest according to claim 2, characterized in that: A plurality of positioning rods (331) are fixed to the upper end of the damping gasket (33), and a plurality of positioning grooves (311) are formed circumferentially on the mounting plate (31), and the positioning rods (331) are inserted into the positioning grooves (311).

6. The rotating structure of a sofa backrest according to claim 4, characterized in that: The mounting plate (31) is also provided with a limit assembly (5) for limiting its rotation angle, the limit assembly (5) comprising a support plate (52) coaxially fixed on the mounting plate (31), a fixed base plate (51) fixed on the base (2), and a limit shaft (53) arranged on the fixed base plate (51), the support plate (52) being coaxially provided with a limit groove (511), and the limit shaft (53) being arranged to slide in the limit groove (511).

7. The rotating structure of a sofa backrest according to claim 6, characterized in that: The support plate (52) and the fixed bottom plate (51) are both arranged at one end of the fixed plate away from the damping gasket (33), and the bolts (61) are passed through the fixed bottom plate (51) and the damping fixed plate (32).

8. The rotating structure of a sofa backrest according to claim 6, characterized in that: A gap is left between the support plate (52) and the fixed bottom plate (51).

9. The rotating structure of a sofa backrest according to claim 6, characterized in that: The damping fixing plate (32) is provided with a plurality of first fixing holes (321) in the circumferential direction, and the mounting plate (31) and the supporting plate (52) are both provided with a plurality of second fixing holes (312), wherein the axes of the second fixing holes (312) can be aligned with the axes of the first fixing holes (321).

10. The rotating structure of a sofa backrest according to claim 6, characterized in that: The base (2) is provided with a connecting assembly (4) for connecting it to the rotating shaft (1), and the connecting assembly (4) comprises an upper bushing (41), a bushing support tube (42) and a lower bushing (43) coaxially arranged on the rotating shaft (1); the bushing support tube (42) is passed through the base (2); the two ends of the bushing support tube (42) are respectively fixed to the upper bushing (41) and the lower bushing (43); the upper bushing (41) is fixed to the base (2), and the lower bushing (43) is fixed to the fixed bottom plate (51).

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