Four-side-supported armrest backrest structure

Abstract

The utility model provides an armrest backrest structure with four sides supported, a chair is provided with a seat plate, a backrest frame and armrests, the seat plate is transversely arranged, the two sides of the seat plate are symmetrically and fixedly connected with the armrests, the backrest frame is fixedly connected between the armrests on the two sides, the armrests are provided with four supporting sides, and the four supporting sides are fixedly connected with the backrest frame. Wherein the bottom end supporting edge is used for fixing the seat plate, the rear side supporting edge is used for supporting and fixing the backrest frame, the other two supporting edges are used for supporting the upper limbs in the transverse direction and the vertical direction respectively, installation positions attached to the side edges and the bottom edge of the seat plate are formed on the bottom end supporting edge, and butt joint structures are oppositely arranged between the rear side supporting edge and the backrest frame. The seat plate and the backrest plate are connected through the handrails, the handrails and the backrest are both of a frame-shaped structure, the overall structure is light and convenient, comfort is good, the handrails are provided with installation positions and butt joint structures for connection in order to improve the connection reliability, the better connection reliability is achieved, the supporting performance of the seat is better, and the service life is longer.

Description

Technical Field

[0001] The utility model relates to an improvement of a chair support and backrest structure, in particular to an armrest and backrest structure supported on four sides. Background Art

[0002] The armrests and backrest of the chair are the main supporting structures for the upper limbs of the body. The backrest has a large supporting surface that can support the torso and provide a comfortable touch. The armrests can provide support for the upper limbs and make up for the support distance of the desktop. In order to improve the lightness of the chair, the backrest and other structures can be installed with mesh. The mesh backrest has good air permeability and reduces the weight of the structure. The purpose of this design is to provide a lightweight armrest backrest structure shape improvement and a fixed connection form. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art and to provide an armrest backrest structure with four-side supports.

[0004] The technical solution adopted by the utility model to solve the above-mentioned problem is: the chair has a seat plate, a backrest frame and an armrest, the seat plate is arranged horizontally, the armrests are symmetrically fixedly connected on both sides of the seat plate, the backrest frame is fixedly connected between the armrests on both sides, the armrest has four supporting edges, wherein the bottom supporting edge fixes the seat plate, the rear supporting edge supports and fixes the backrest frame, and the other two supporting edges respectively support the upper limbs horizontally and vertically, the bottom supporting edge is formed with a mounting position that fits the side and bottom edges of the seat plate, and a docking structure is relatively arranged between the rear supporting edge and the backrest frame. The seat plate and the backrest plate are connected through the armrest, the armrest and the backrest are both frame-type structures, the overall structure is light, a mesh structure can be used, the overall structure has high air permeability and good comfort, in order to improve the reliability of connection, the armrest is provided with a mounting position and a docking structure for connection, has better connection reliability, better support of the seat and longer service life.

[0005] Furthermore, the docking structure includes an insert formed on the armrest and a slot formed on the side of the backrest frame accordingly. A protruding nail column is also formed on the armrest, and a circular groove is formed on the backrest frame accordingly. A fixing screw is inserted into the nail column to fix the armrest and the backrest frame. The docking structure forms a positioning structure by connecting the insert and the slot with each other, and by connecting the fixing screw in the nail column, the nail column also has the function of positioning and connecting. The connectivity between the two is good, which is convenient for assembly and fixing.

[0006] Furthermore, the mounting position is formed with a bottom support surface, an edge corner and a mounting hole. The bottom support surface is arranged relative to the bottom surface of the seat plate, the edge corner is arranged around the side lower edge of the seat plate, the edge corner and the bottom support surface are smoothly transitioned and formed, and a mounting hole is formed on the bottom support surface. Screws are fixed in the mounting hole to fix the armrest and the seat plate. The mounting position has the function of fixing with the bottom of the seat plate, and can surround the bottom edge of the seat plate. The fixed contact area is large, and the structure after installation is stable and reliable.

[0007] Furthermore, the backrest frame is a frame structure as a whole, the frame structure is divided into a hollow structure inside, a lumbar support is installed between two vertical solid parts of the frame structure, and both ends of the lumbar support are connected to the frame structure through a rotating mounting piece. The lumbar support can be installed with a rotatable structure, and can fit the rear shape of the torso for support, thereby improving comfort.

[0008] Furthermore, the front part of the backrest frame is tightly connected with a supporting mesh, the edge of which is fixedly embedded in the fixing groove of the frame structure, and the supporting mesh is arranged to cover the supporting surface of the lumbar support. The supporting mesh is the main use surface, has good air permeability, and is light in structure, which is suitable for the requirements of this design.

[0009] Compared with the prior art, the utility model has the following advantages and effects: the utility model is a new design of an armrest backrest structure with four-side support, in which the seat plate and the backrest are connected by the armrest, which has a better structural lightweight effect compared to the seat plate connected to the backrest through a rigid part, and has a good appearance and aesthetic feeling, and is suitable for mass production requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural diagram of an armrest and backrest.

[0011] Figure 2 It is a schematic diagram of the assembly structure of the armrest and backrest.

[0012] Figure 3 It is a schematic diagram of the assembly structure of the armrest seat panel.

[0013] In the figure: 1, seat plate, 2, backrest frame, 3, armrest, 4, bottom support edge, 5, rear support edge, 6, installation position, 7, insert, 8, slot, 9, nail column, 10, round groove, 11, fixing screw, 12, bottom support surface, 13, edging corner, 14, installation hole, 15, lumbar support. DETAILED DESCRIPTION

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0015] A chair with an armrest and backrest structure supported on four sides comprises a seat plate 1, a backrest frame 2 and armrests 3. The seat plate 1 is arranged horizontally, and the armrests 3 are symmetrically fixedly connected on both sides of the seat plate 1. The backrest frame 2 is fixedly connected between the armrests 3 on both sides. The armrest 3 has four supporting edges, wherein a bottom supporting edge 4 fixes the seat plate 1, and a rear supporting edge 5 supports and fixes the backrest frame 2. The other two supporting edges respectively support the upper limbs horizontally and vertically. The bottom supporting edge 4 is formed with an installation position 6 that fits the side and bottom edges of the seat plate 1, and a docking structure is relatively arranged between the rear supporting edge 5 and the backrest frame 2.

[0016] The docking structure includes an insert 7 formed on the armrest 3 and a corresponding slot 8 formed on the side of the backrest frame 2. A protruding nail column 9 is also formed on the armrest 3, and a corresponding circular groove 10 is formed on the backrest frame 2. A fixing screw 11 is inserted into the nail column 9 to fix the armrest 3 and the backrest frame 2.

[0017] The mounting position 6 is formed with a bottom supporting surface 12, an edge corner 13 and a mounting hole 14. The bottom supporting surface 12 is set relative to the bottom surface of the seat plate 1, and the edge corner 13 is set around the lower side edge of the seat plate 1. The edge corner 13 and the bottom supporting surface 12 are smoothly transitioned and formed. The mounting hole 14 is formed on the bottom supporting surface 12, and a screw is fixed in the mounting hole 14 to fix the armrest 3 and the seat plate 1.

[0018] The backrest frame 2 is a frame structure as a whole, and the frame structure is divided into a hollow structure inside. A lumbar support 15 is installed between two vertical solid parts of the frame structure, and both ends of the lumbar support 15 are connected to the frame structure through a rotating mounting member.

[0019] The front part of the backrest frame 2 is tightly connected with a supporting mesh cloth, the edge of which is fixedly embedded in a fixing groove of the frame structure, and the supporting mesh cloth is arranged to cover the supporting surface of the lumbar support 15 .

[0020] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary rather than restrictive. The scope of the present invention is defined by the claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim involved.

[0021] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A four-side supported armrest backrest structure, characterized in that: The chair comprises a seat plate (1), a backrest frame (2) and an armrest (3); the seat plate (1) is arranged horizontally, and the armrests (3) are symmetrically fixedly connected on both sides of the seat plate (1); the backrest frame (2) is fixedly connected between the armrests (3) on both sides; the armrest (3) has four supporting edges, wherein the bottom supporting edge (4) fixes the seat plate (1), and the rear supporting edge (5) supports and fixes the backrest frame (2); the other two supporting edges respectively support the upper limbs horizontally and vertically; the bottom supporting edge (4) is formed with a mounting position (6) that fits the side and bottom edges of the seat plate (1); and a docking structure is relatively arranged between the rear supporting edge (5) and the backrest frame (2).

2. The four-side supported armrest backrest structure according to claim 1, characterized in that: The docking structure comprises an insert (7) formed on the armrest (3) and a slot (8) correspondingly formed on the side of the backrest frame (2); a protruding nail-through column (9) is also formed on the armrest (3); a circular groove (10) is correspondingly formed on the backrest frame (2); a fixing screw (11) is inserted into the nail-through column (9) to fix the armrest (3) and the backrest frame (2) together.

3. The four-side supported armrest backrest structure according to claim 1, characterized in that: The mounting position (6) is formed with a bottom supporting surface (12), an edge corner (13) and a mounting hole (14); the bottom supporting surface (12) is arranged relative to the bottom surface of the seat plate (1); the edge corner (13) is arranged around the side lower edge of the seat plate (1); the edge corner (13) and the bottom supporting surface (12) are formed in a smooth transition; a mounting hole (14) is formed on the bottom supporting surface (12); a screw is fixedly arranged in the mounting hole (14) to fix the armrest (3) and the seat plate (1).

4. The four-side supported armrest backrest structure according to claim 1, characterized in that: The backrest frame (2) is a frame structure as a whole, and the frame structure is divided into a hollow structure at the inside. A lumbar support (15) is installed between two vertical solid parts of the frame structure, and the two ends of the lumbar support (15) are connected to the frame structure through a rotating mounting piece.

5. The four-side supported armrest backrest structure according to claim 4, characterized in that: The front part of the backrest frame (2) is tightly connected with a supporting mesh cloth, the edge of which is fixedly embedded in a fixing groove of the frame structure, and the supporting mesh cloth is arranged to cover the supporting surface of the lumbar support (15).

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