CN215533053U

CN215533053U - Seat and position adjusting device of backrest thereof

Info

Publication number: CN215533053U
Application number: CN202120711027.7U
Authority: CN
Inventors: 王江林; 王郑兴; 鲍家华
Original assignee: Henglin Home Furnishings Co Ltd
Current assignee: Henglin Home Furnishings Co Ltd
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2022-01-18
Anticipated expiration: 2031-04-07

Abstract

The utility model discloses a position adjusting device of a piece of seating furniture and a backrest thereof, the position adjusting device comprises an adjusting mechanism, the adjusting mechanism comprises a fixing part and an installation part, the fixing part comprises a first fixing seat, a first connecting rod and a second connecting rod, the first fixing seat is fixedly connected with a seat part of the piece of seating furniture, the installation part comprises a second fixing seat and an installation seat, one end of the installation seat is fixedly connected with the second fixing seat, the other end of the installation seat is connected with the backrest, and the first fixing seat, the first connecting rod, the second connecting rod and the second fixing seat form a four-bar mechanism, so that the backrest can move back and forth at the bottom of the piece of seating furniture. The position of the backrest is adjusted through the four-bar linkage mechanism, so that different depths of the seat part of the seat are obtained, and the requirements of different users are met; when the position for seating is insufficient, the backrest is adjusted to increase the use position of the piece of seating, and either side of the piece of seating can rest against the backrest.

Description

Seat and position adjusting device of backrest thereof

Technical Field

The utility model relates to the field of furniture manufacturing, in particular to a seat and a position adjusting device of a backrest thereof.

Background

At present, the backrest of the seat in the market is usually fixedly arranged on one side of the seat part of the seat, the seat structure of the seat with the design structure is fixed, and the backrest can not be adjusted relative to the seat part of the seat and can not be correspondingly adjusted according to the requirements of users. In order to meet different requirements of users, seats with adjustable backrests are also available on the market, but the seats with adjustable backrests are limited to adjusting the back-tilting angle of the backrest, and the depth of the backrest relative to the seat of the seat is fixed, so that the depth of the backrest relative to the seat of the seat cannot be adjusted by the users according to the shapes of the users, the comfort level of the users is low, the backrest cannot reach the optimal supporting position for the backs of different users, and the universality is poor.

Disclosure of Invention

In order to solve the above technical problems, an object of the present invention is to provide a seat and a position adjustment device for a backrest thereof, wherein the position adjustment device for the backrest can adjust the position of the backrest on a seat of the seat, so that the depth of the seat can be adjusted according to the actual needs of different users, and the seat has high comfort and better universality.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a position control device of back, includes adjustment mechanism, adjustment mechanism is including the fixed part that is used for connecting the thing to sit on seat and the installation department that is used for connecting the back, the fixed part includes first fixing base, head rod and second connecting rod, first fixing base and thing to sit on seat fixed connection, the installation department includes second fixing base and mount pad, the one end and the second fixing base fixed connection of mount pad, and the other end is used for connecting the back, the one end and the first fixing base of head rod are articulated, and the other end is articulated with the second fixing base, and the one end and the first fixing base of second connecting rod are articulated, and the other end is articulated with the second fixing base, and first fixing base, head rod, second connecting rod and second fixing base form four-bar linkage.

Preferably, the adjusting mechanism comprises a first cross rod and a plurality of groups of adjusting mechanisms, wherein the second fixing seats of the plurality of groups of adjusting mechanisms are fixedly connected with the first cross rod, two ends of the first cross rod are respectively fixed on the second fixing seats of the first group of adjusting mechanisms and the last group of adjusting mechanisms, and the plurality of groups of adjusting mechanisms rotate synchronously. Like this, position adjusting device is better to the support intensity of back, and it is more stable to rotate, avoids swinging at the rotation in-process back.

Preferably, the first fixing seat is further provided with a first limiting column, and the first limiting column is arranged between the first connecting rod and the second connecting rod to limit the swing angle of the first connecting rod and the second connecting rod; the second fixing seat is further provided with a second limiting column, and the second limiting column is arranged between the first connecting rod and the second connecting rod to limit the swing angle of the first connecting rod and the second connecting rod.

Preferably, the first limiting column is fixedly connected with the first fixing seat or integrally formed with the first fixing seat, and the second limiting column is fixedly connected with the second fixing seat or integrally formed with the second fixing seat.

Preferably, the second fixing seat is hinged with a connecting piece, and the mounting seat is fixedly connected with the connecting piece, so that the mounting seat can be rotatably arranged on the second fixing seat.

Preferably, the second fixing seat comprises a first U-shaped connecting piece with an upward opening and a base connected below the first U-shaped connecting piece, the first connecting rod and the second connecting rod are hinged to the base, the connecting piece is a second U-shaped connecting piece with a downward opening, the first U-shaped connecting piece is hinged to the second U-shaped connecting piece, and the mounting seat is fixedly arranged on the second U-shaped connecting piece.

Preferably, the base and the first U-shaped connecting piece are fixedly connected or integrally formed.

A piece of seating furniture comprises a seating furniture seat, a backrest and the position adjusting device of the backrest, wherein the backrest moves back and forth on the seating furniture seat through the position adjusting device of the backrest.

Preferably, the first fixing seat is fixedly arranged at a position close to the rear side of the seat part, a groove is formed in the seat part, and the backrest moves back and forth in the groove of the seat part.

By adopting the technical scheme, the front and rear positions of the backrest on the seat part of the seat are adjusted through the four-bar mechanism in the position adjusting device, so that different depths of the seat part of the seat are obtained, the requirements of different users are met, the universality is wider, and the comfort is better; the backrest can also be adjusted to increase the position of use on the seat of the piece of seating when the position for seating is insufficient, and either side of the seat of the piece of seating can rest against the backrest. In addition, in the transportation process, the mounting seat in the position adjusting device can be turned over, so that the transportation volume of the position adjusting device is reduced, and the transportation cost is reduced.

Drawings

FIG. 1 is a schematic view of the backrest and the seat of the present invention;

FIG. 2 is a schematic structural view of an adjustment mechanism;

FIG. 3 is a schematic view of the position adjustment device;

FIG. 4 is a schematic view of the inverted mount of FIG. 3;

description of reference numerals: 1. a seat portion; 2. a backrest; 3. a position adjustment device; 31. an adjusting mechanism 311 and a first fixed seat; 312. a first connecting rod; 313. a second connecting rod; 314. a second fixed seat; 315. a mounting seat; 316. a first limit post; 317. a second limit post; 319. a second U-shaped connector; 32. a first cross bar.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

For the sake of clarity, the direction of insertion of the backrest into the seat of the piece of seating furniture is taken as down, and vice versa as up.

A piece of seating furniture, as shown in fig. 1, comprises a seating furniture seat 1, a backrest 2 and a position adjusting device 3 of the backrest, the backrest 2 being moved back and forth on the seating furniture seat 1 by the position adjusting device 3 of the backrest.

The position adjusting device of the backrest comprises an adjusting mechanism 31, as shown in fig. 2, the adjusting mechanism 31 comprises a fixing portion for connecting a seat 1 and a mounting portion for connecting the backrest 2, the fixing portion comprises a first fixing seat 311, a first connecting rod 312 and a second connecting rod 313, the mounting portion comprises a second fixing seat 314 and a mounting seat 315, one end of the mounting seat 315 is fixedly connected with the second fixing seat 314, the other end of the mounting seat is used for connecting the backrest 2, one end of the first connecting rod 312 is hinged to the first fixing seat 311, the other end of the first connecting rod 312 is hinged to the second fixing seat 314, one end of the second connecting rod 313 is hinged to the first fixing seat 311, the other end of the second connecting rod 313 is hinged to the second fixing seat 314, the first fixing seat 311, the first connecting rod 312, the second connecting rod 313 and the second fixing seat 314 form a four-bar mechanism, and the first fixing seat 311 is fixedly connected to the seat 1. Thus, the mounting seat 315 can drive the backrest 2 to move back and forth on the seat part 1 through the four-bar linkage. In one embodiment, the mounting seat 315 is fixedly connected to the backrest 2 by a fastener such as a bolt; in another embodiment, the mounting seat 315 is inserted into the backrest 2 to increase the contact area with the backrest 2, so as to more effectively move the backrest 2 back and forth on the seat 1.

For convenience of installation and fixation, the first fixing seat 311 is an L-shaped connecting member, and the L-shaped connecting member also prevents the first connecting rod 312 and the second connecting rod 313 from shaking left and right relative to the seat part 1, thereby limiting the backrest 2 to move only in the front and rear directions of the seat part 1.

In order to limit the moving range of the backrest 2 on the seat 1, the first fixing seat 311 is further provided with a first limiting column 316, the first limiting column 316 is fixedly connected with or integrally formed with the first fixing seat 311, and the first limiting column 316 is arranged between the first connecting rod 312 and the second connecting rod 313 to limit the swing angle of the first connecting rod 312 and the second connecting rod 313; the second fixing seat 314 is further provided with a second limiting post 317, the second limiting post 317 is fixedly connected with or integrally formed with the second fixing seat 314, and the second limiting post 317 is arranged between the first connecting rod 312 and the second connecting rod 313 to limit the swing angle of the first connecting rod 312 and the second connecting rod 313.

In order to more stably couple and support the backrest 2, the backrest 2 is prevented from being shaken or damaged due to stress concentration during rotation. Preferably, the backrest position adjusting device 3 includes a first cross bar and a plurality of sets of adjusting mechanisms 31 as described above, the second fixing seats 314 of the plurality of sets of adjusting mechanisms 31 are all fixedly connected with the first cross bar 32, two ends of the first cross bar 32 are respectively fixed on the second fixing seats 314 of the first set of adjusting mechanisms 31 and the last set of adjusting mechanisms 31, and the plurality of sets of adjusting mechanisms 31 rotate synchronously. In this embodiment, as shown in fig. 2 to 4, the two sets of adjusting mechanisms 31 are provided, two ends of the first cross bar 32 are respectively fixed on the second fixing seats 314 of the two sets of adjusting mechanisms 31, and the mounting seats 315 on the two sets of adjusting mechanisms 31 rotate synchronously, so that the backrest 2 moves back and forth on the seat unit 1 through the position adjusting device 3 to adjust the depth of the seat unit 1.

The first fixing seat 311 is fixed at a position close to the rear side of the seat bottom 1, and preferably, the first fixing seat 311 is fixedly arranged at a position which is 0-1/4 of the length of the seat from the rear side of the seat 1, and the backrest 2 moves back and forth in the range from the side to the middle of the seat 1. Thus, when the backrest 2 is located at the side of the seat part 1, the depth of the seat part 1 is the largest; when the backrest 2 rotates to the middle of the seat part 1 gradually, the depth of the seat part 1 is reduced, the seat part 1 is divided into two parts by the backrest 2, people can sit on two sides of the seat part 1, a user can select to sit on any side of the seat part 1 according to own needs, the number of using positions of the seat part 1 is increased, the backrest 2 can be leaned on any side of the seat part 1, comfort is good, and flexibility is high. In order to facilitate the movement of the backrest 2, a groove is arranged on the seat bottom 1, and the backrest 2 moves back and forth in the groove of the seat bottom 1.

In order to facilitate transportation and reduce the volume of the position adjusting mechanism, a connecting member is hinged to the second fixing seat 314, and the mounting seat 315 is fixedly connected with the connecting member, so that the mounting seat 315 is rotatably disposed on the second fixing seat 314. In this embodiment, the second fixing seat 314 includes a first U-shaped connecting member with an upward opening and a base connected below the first U-shaped connecting member, the first connecting rod 312 and the second connecting rod 313 are hinged to the base, the connecting member is a second U-shaped connecting member with a downward opening, the first U-shaped connecting member is hinged to the second U-shaped connecting member 319, and the mounting seat 315 is fixedly disposed on the second U-shaped connecting member 319, so that the mounting seat 315 is rotatably disposed on the second fixing seat 314, and during transportation, the mounting seat 315 in the position adjusting device 3 can be turned over to the first cross rod 32 to reduce the transportation volume of the position adjusting device 3, thereby reducing the transportation cost.

All features described in the description, the appended claims and the drawings, either individually or in any combination thereof, are essential features of the utility model.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "one implementation," "a specific implementation," "other implementations," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment, implementation, or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described above may also be combined in any suitable manner in any one or more of the embodiments, examples, or examples. The utility model also includes any one or more of the specific features, structures, materials, or characteristics described above, taken alone or in combination.

Although the embodiments of the present invention have been shown and described, it is understood that the embodiments are illustrative and not restrictive, and that those skilled in the art can make changes, modifications, substitutions, variations, deletions, additions or rearrangements of features and elements within the scope of the utility model without departing from the spirit and scope of the utility model.

Claims

1. The position adjusting device of the backrest is characterized by comprising an adjusting mechanism (31), wherein the adjusting mechanism (31) comprises a fixing part and an installation part, the fixing part is used for connecting a seat (1) and the installation part is used for connecting a backrest (2), the fixing part comprises a first fixing seat (311), a first connecting rod (312) and a second connecting rod (313), the first fixing seat (311) is fixedly connected with the seat (1), the installation part comprises a second fixing seat (314) and an installation seat (315), one end of the installation seat (315) is fixedly connected with the second fixing seat (314), the other end of the installation seat (315) is used for connecting the backrest (2), one end of the first connecting rod (312) is hinged with the first fixing seat (311), the other end of the first connecting rod is hinged with the second fixing seat (314), one end of the second connecting rod (313) is hinged with the first fixing seat (311), the other end of the second connecting rod is hinged with the second fixing seat (314), the first fixing seat (311), the first connecting rod (312), the second connecting rod (313) and the second fixing seat (314) form a four-bar linkage.

2. The backrest position adjusting device according to claim 1, comprising a first cross bar (32) and a plurality of sets of adjusting mechanisms (31) as described above, wherein the second fixing seats (314) of the plurality of sets of adjusting mechanisms (31) are all fixedly connected with the first cross bar (32), two ends of the first cross bar (32) are respectively fixed on the second fixing seats (314) of the first set of adjusting mechanisms (31) and the last set of adjusting mechanisms (31), and the plurality of sets of adjusting mechanisms (31) rotate synchronously.

3. The backrest position adjustment device as claimed in claim 1, wherein the first fixing seat (311) is further provided with a first limiting post (316), and the first limiting post (316) is disposed between the first connecting rod (312) and the second connecting rod (313) to limit the swing angle of the first connecting rod (312) and the second connecting rod (313); the second fixing seat (314) is further provided with a second limiting column (317), and the second limiting column (317) is arranged between the first connecting rod (312) and the second connecting rod (313) to limit the swing angle of the first connecting rod (312) and the second connecting rod (313).

4. The backrest position adjustment device of claim 3, wherein the first position-limiting post (316) is fixedly connected to or integrally formed with the first fixing seat (311), and the second position-limiting post (317) is fixedly connected to or integrally formed with the second fixing seat (314).

5. A device for adjusting the position of a backrest as claimed in claim 1, characterized in that the second holder (314) is hinged to a connecting element, and the mounting seat (315) is fixedly connected to the connecting element, so that the mounting seat (315) is rotatably mounted on the second holder (314).

6. The position adjusting device of a backrest as claimed in claim 5, wherein the second fixing seat (314) comprises a first U-shaped connecting member with an upward opening and a base connected below the first U-shaped connecting member, the first connecting rod (312) and the second connecting rod (313) are hinged on the base, the connecting member is a second U-shaped connecting member with a downward opening, the first U-shaped connecting member and the second U-shaped connecting member (319) are hinged, and the mounting seat (315) is fixedly arranged on the second U-shaped connecting member (319).

7. A position adjustment device for a backrest according to claim 6, wherein the base and the first U-shaped connecting member are fixedly connected or integrally formed.

8. A piece of seating furniture, characterized in that it comprises a piece of seating furniture seat (1), a backrest (2) and a position adjustment device (3) of the backrest according to any one of claims 1 to 7, the backrest (2) being moved back and forth on the piece of seating furniture seat (1) by the position adjustment device (3) of the backrest.

9. A seat according to claim 8, characterized in that the first fixed seat (311) is fixedly arranged at a position close to the rear side of the seat (1), a groove is arranged on the seat (1), and the backrest (2) moves back and forth in the groove of the seat (1).