CN219556786U

CN219556786U - Rotary structure for adjusting sofa backrest

Info

Publication number: CN219556786U
Application number: CN202321230642.1U
Authority: CN
Inventors: 黄德友
Original assignee: Zhejiang Lixing Furniture Co ltd
Current assignee: Zhejiang Lixing Furniture Co ltd
Priority date: 2023-05-22
Filing date: 2023-05-22
Publication date: 2023-08-22
Anticipated expiration: 2033-05-22

Abstract

The utility model discloses a rotating structure for adjusting a sofa backrest, which belongs to the field of sofa backrests and comprises a driving assembly, a rotating shaft, backrest mounting plates and sofa mounting plates, wherein the rotating shaft is embedded in the sofa, the backrest mounting plates are fixedly sleeved at two ends of the rotating shaft, and the sofa mounting plates are rotatably sleeved at two ends of the rotating shaft; the utility model provides a constant-angle keeping fixed rotating structure for adjusting a sofa backrest, which has the advantages that the stability of the angle adjustment of the sofa backrest is improved.

Description

Rotary structure for adjusting sofa backrest

Technical Field

The utility model relates to the field of sofa backrests, in particular to a rotating structure for adjusting a sofa backrest.

Background

The sofa is an indispensable seat in daily life of people, and has important functions no matter in daily use or space decoration

The patent with the application number of 201921552427.7 discloses a turnover sofa with adjustable seat depth, which relates to the technical field of furniture and comprises a sofa seat, a sofa armrest, a turnover backrest and sofa legs; the sofa is characterized in that a turnover backrest is arranged above the sofa seat, sofa armrests are arranged on two sides of the turnover backrest, sofa legs are arranged below the sofa armrests, the sofa armrests and the sofa legs are of an integrated structure, a cross beam is arranged inside the turnover backrest, the turnover backrest is fixedly connected with a rotating mechanism, the rotating mechanism is rotatably connected with the cross beam, and two sides of the cross beam are fixedly connected with the sofa armrests.

The angle of rotary mechanism on the crossbeam is rotatory to the sofa back to through limit key and the inner wall butt of inseparable recess, thereby control rotary mechanism's rotation angle, but rotary mechanism is when rotating to the angle of not with inseparable recess inner wall butt, because rotary mechanism still keeps rotating between the crossbeam to be connected, thereby has led personnel to drive rotary mechanism and rotate on the crossbeam when leaning on to the back, causes the sofa back unable to keep fixedly at invariable angle, and sofa back rotatory stability is poor.

There is no rotating structure for adjusting the sofa backrest that has a constant angle that remains fixed.

Disclosure of Invention

The summary of the utility model is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. The summary of the utility model is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.

To solve the technical problems mentioned in the background section above, some embodiments of the present utility model provide a rotating structure for adjusting a sofa backrest, including: the driving assembly, the rotating shaft embedded in the sofa, the backrest mounting plates fixedly sleeved at the two ends of the rotating shaft and the sofa mounting plates rotatably sleeved at the two ends of the rotating shaft;

the bottom of back mounting panel is annular array and has seted up a plurality of locating holes, the expansion tank that corresponds with the locating hole has been seted up to the lateral wall of sofa mounting panel, the diapire of expansion tank is embedded to be fixed with the electromagnetic plate, and the embedded spring that is provided with in the expansion tank to peg graft through the spring elasticity has the locating lever, the one end fixedly connected with magnetism of locating lever is inhaled the pole, and the other end of locating lever coincide peg graft in the locating hole, magnetism is inhaled the pole and is passed spring and electromagnetic plate actuation and fix.

The motor is used for driving the backrest mounting plate to rotate through the motor electric first gear and the second gear, the angle of the sofa backrest is regulated in the rotating process, the sofa mounting plate is kept constant due to the influence of the dead weight of the sofa, the motor and the electromagnetic plate are closed after the angle regulation of the sofa backrest and the backrest mounting plate, the positioning rod is pushed to move out of the positioning rod by the spring in the telescopic groove and is inserted into the positioning hole, so that the sofa mounting plate and the backrest mounting plate are kept axially fixed, the sofa backrest is kept fixed at a constant angle due to the positioning rod structure which is arranged elastically and the function of the spring and the electromagnetic plate which drive the telescopic rod to move, and the sofa backrest is provided with a rotating structure which is kept fixed at a constant angle and is used for regulating the sofa backrest.

Further, a damping sleeve connected with the sofa in a damping manner is fixedly sleeved at the center of the rotating shaft, and positioning blocks are fixed on two sides of the outer wall of the rotating shaft.

Further, the bottom end of the backrest mounting plate is provided with a mounting hole, and the backrest mounting plate is sleeved on the rotating shaft in an anastomotic manner through the mounting hole.

Further, a positioning groove is formed in the inner wall of the mounting hole, and the positioning block is anastomotic and inserted into the positioning groove.

Further, the bearing is fixedly embedded in the sofa mounting plate and is rotatably sleeved on the rotating shaft through the bearing.

Further, the driving assembly comprises a motor and a meshing assembly connected with the motor, and the meshing assembly comprises a first gear and a second gear which are connected with each other in a meshing manner.

Further, a shaft key is embedded in the first gear and fixedly sleeved on the rotating shaft through the shaft key, and a shaft of the motor is fixedly connected with the second gear.

The utility model has the beneficial effects that: the utility model provides a constant angle keeps fixed and is used for adjusting revolution mechanic of sofa back, the angle adjustment back of sofa back and back mounting panel closes motor and electromagnetic plate, the spring in the expansion tank promotes the locating lever and shifts out wherein to peg graft in the locating hole, thereby make between sofa mounting panel and the back mounting panel keep axial fixity, thereby make the sofa back keep fixed at constant angle, because the action of the locating lever structure that elasticity set up and spring and the electromagnetic plate that drive the telescopic link removal, it has the constant angle and keeps fixed and is used for adjusting the revolution mechanic of sofa back, the stability of sofa back angle adjustment has been promoted.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model, are incorporated in and constitute a part of this specification. The drawings and their description are illustrative of the utility model and are not to be construed as unduly limiting the utility model.

In addition, the same or similar reference numerals denote the same or similar elements throughout the drawings. It should be understood that the figures are schematic and that elements and components are not necessarily drawn to scale.

In the drawings:

FIG. 1 is an overall schematic of an embodiment according to the present utility model;

FIG. 2 is a schematic view of the structure of the back mounting plate;

FIG. 3 is a schematic view of a sofa mounting plate in a disassembled configuration;

fig. 4 is a schematic diagram of the motor structure.

1. A rotating shaft; 2. a sofa mounting plate; 3. a damping sleeve; 4. a backrest mounting plate; 5. a motor; 6. a positioning block; 7. positioning holes; 8. a positioning groove; 9. a bearing; 10. an electromagnetic plate; 11. a spring; 12. a magnetic suction rod; 13. a positioning rod; 14. a telescopic slot; 15. a first gear; 16. an axle key; 17. a second gear; 18. and (5) mounting holes.

Detailed Description

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It should be understood that the drawings and embodiments of the present disclosure are for illustration purposes only and are not intended to limit the scope of the present disclosure.

It should be noted that, for convenience of description, only the portions related to the present utility model are shown in the drawings. Embodiments of the present disclosure and features of embodiments may be combined with each other without conflict.

It should be noted that the terms "first," "second," and the like in this disclosure are merely used to distinguish between different devices, modules, or units and are not used to define an order or interdependence of functions performed by the devices, modules, or units.

It should be noted that references to "one", "a plurality" and "a plurality" in this disclosure are intended to be illustrative rather than limiting, and those of ordinary skill in the art will appreciate that "one or more" is intended to be understood as "one or more" unless the context clearly indicates otherwise.

The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

A swivel structure for adjusting a sofa backrest, comprising: the sofa comprises a driving assembly, a rotating shaft 1 embedded in the sofa, backrest mounting plates 4 fixedly sleeved at two ends of the rotating shaft 1, and sofa mounting plates 2 rotatably sleeved at two ends of the rotating shaft 1; the bottom of the backrest mounting plate 4 is provided with a plurality of positioning holes 7 in an annular array, the side wall of the sofa mounting plate 2 is provided with a telescopic slot 14 corresponding to the positioning holes 7, the bottom wall of the telescopic slot 14 is internally provided with an electromagnetic plate 10 in a embedding manner, the telescopic slot 14 is internally provided with a spring 11, a positioning rod 13 is elastically inserted through the spring 11, one end of the positioning rod 13 is fixedly connected with a magnetic suction rod 12, the other end of the positioning rod 13 is in fit connection with the positioning hole 7, the magnetic suction rod 12 penetrates through the spring 11 and is fixedly attracted with the electromagnetic plate 10, the electromagnetic plate 10 is started to enable the electromagnetic plate 10 to be in contact with the magnetic suction rod 12 on the positioning rod 13, the positioning rod 13 is driven to move out of the positioning hole 7 and shrink into the telescopic slot 14, the motor 5 is started to rotate a first gear 15 and a second gear 17, the rotating shaft 1 drives the backrest mounting plate 4 to rotate, the angle of the sofa backrest is adjusted in the rotating process, the sofa mounting plate 2 is kept constant due to the influence angle of the sofa, the backrest and the electromagnetic plate 4 is closed after the angle adjustment of the backrest and the backrest is subjected to the constant, the electromagnetic plate 14 passes through the spring 11 and the electromagnetic plate 10 is pushed to move out of the positioning rod 13, and the positioning rod 13 is kept constant, and the positioning plate is kept constant, and the positioning angle is kept constant, and the sofa is axially fixed, and the positioning plate is fixed, and the backrest is fixed, and the positioning plate is kept constant, and the positioning structure is fixed, and the backrest is positioned.

The damping sleeve 3 connected with the sofa in a damping manner is fixedly sleeved at the center position of the rotating shaft 1, the positioning blocks 6 are fixed on two sides of the outer wall of the rotating shaft 1, the damping sleeve 3 is in damping connection with a sofa main body for installing the rotating shaft 1, the sofa backrest is regulated at a slower speed by friction force generated by the damping sleeve 3, the stability of the sofa backrest is improved, the mounting hole 18 is formed in the bottom end of the backrest mounting plate 4 and is in fit connection with the rotating shaft 1 through the mounting hole 18, the positioning grooves 8 are formed in the inner wall of the mounting hole 18, the positioning blocks 6 are in fit connection with the positioning grooves 8, the positioning blocks 6 enable the sofa backrest plate to be axially fixed with the rotating shaft 1, the rotating shaft 1 drives the sofa backrest to synchronously rotate in the rotating process, the bearing 9 is fixedly embedded in the sofa mounting plate 2, the sofa backrest is in turn sleeved on the rotating shaft 1 through the bearing 9, the driving assembly comprises a motor 5 and a meshing assembly connected with the motor 5, and the meshing assembly comprises a first gear 15 and a second gear 17 which are in meshed connection, and the rotation speed of the first gear 15 is far greater than that of the second gear 17, and the torque output of the first gear 17 is far greater than the second gear 17.

The first gear 15 is internally embedded with a shaft key 16, and is fixedly sleeved on the rotating shaft 1 through the shaft key 16, the shaft of the motor 5 is fixedly connected with the second gear 17, the motor 5 is arranged on the side wall of the sofa main body, and a button for controlling the motor 5 and the electromagnetic plate 10 to be switched is arranged on the sofa main body.

The foregoing description is only of the preferred embodiments of the present disclosure and description of the principles of the technology being employed. It will be appreciated by those skilled in the art that the scope of the utility model in the embodiments of the present disclosure is not limited to the specific combination of the above technical features, but encompasses other technical features formed by any combination of the above technical features or their equivalents without departing from the spirit of the utility model. Such as the above-described features, are mutually substituted with (but not limited to) the features having similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A swivel structure for adjusting a sofa backrest, comprising: the sofa comprises a driving assembly, a rotating shaft (1) embedded in the sofa, backrest mounting plates (4) fixedly sleeved at two ends of the rotating shaft (1) and sofa mounting plates (2) rotatably sleeved at two ends of the rotating shaft (1);

the method is characterized in that: the bottom of back mounting panel (4) is annular array and has seted up a plurality of locating holes (7), flexible groove (14) that correspond with locating hole (7) have been seted up to the lateral wall of sofa mounting panel (2), flexible groove (14)'s diapire is embedded to be fixed with electromagnetic plate (10), and is embedded to be provided with spring (11) in flexible groove (14) to peg graft through spring (11) elasticity has locating lever (13), the one end fixedly connected with magnetism of locating lever (13) is inhaled pole (12), and the other end of locating lever (13) coincide to peg graft in locating hole (7), magnetism is inhaled pole (12) and is passed spring (11) and electromagnetic plate (10) actuation and is fixed.

2. The swivel structure for adjusting a sofa backrest of claim 1, wherein: the damping sleeve (3) connected with the sofa in a damping manner is fixedly sleeved at the center of the rotating shaft (1), and positioning blocks (6) are fixed on two sides of the outer wall of the rotating shaft (1).

3. The swivel structure for adjusting a sofa backrest of claim 2, wherein: the bottom end of the backrest mounting plate (4) is provided with a mounting hole (18), and the backrest mounting plate is connected to the rotating shaft (1) in an anastomotic manner through the mounting hole (18).

4. The swivel structure for adjusting a sofa backrest of claim 3, wherein: the inner wall of the mounting hole (18) is provided with a positioning groove (8), and the positioning block (6) is in fit connection with the positioning groove (8).

5. The swivel structure for adjusting a sofa backrest of claim 1, wherein: the sofa mounting plate (2) is internally embedded and fixed with a bearing (9), and is rotatably sleeved on the rotating shaft (1) through the bearing (9).

6. The swivel structure for adjusting a sofa backrest of claim 1, wherein: the driving assembly comprises a motor (5) and a meshing assembly connected with the motor (5), and the meshing assembly comprises a first gear (15) and a second gear (17) which are connected with each other in a meshing manner.

7. The swivel structure for adjusting a sofa backrest of claim 6, wherein: the first gear (15) is internally provided with a shaft key (16) in an embedded manner and is fixedly sleeved on the rotating shaft (1) through the shaft key (16), and the shaft of the motor (5) is fixedly connected with the second gear (17).