Seat backrest connecting support structure

Abstract

The utility model provides a seat backrest connecting support structure which is characterized in that a seat plate comprises a seat shell, the upper portion of the seat shell is covered with a filling flexible cushion, the bottom of the seat shell is provided with a backrest connecting position and armrest connecting positions, the backrest connecting position is arranged on the rear portion of the seat shell, and the armrest connecting positions are arranged on the two sides of the seat shell. The backrest is fixed to the backrest connecting position through a connecting support, the connecting support is formed into a corner structure, a backrest connecting part and a seat shell connecting part are formed at the two ends of the corner structure, the backrest connecting part is fixedly connected with the rear side face of the lower end of the backrest, and the seat shell connecting part is connected with the backrest connecting position. The seat shell is a bottom base structure of the seat, a plurality of structures are connected with the seat shell, the seat shell is provided with the backrest connecting positions and the armrest connecting positions, when the seat shell is connected with the backrest, the backrest connecting positions and the armrest connecting positions are connected and fixed through the connecting supports, and the connecting supports form corners and are used for limiting the included angle between the backrest and the seat face to form a backrest supporting face.

Description

Technical Field

[0001] The utility model relates to an improvement of a lumbar support structure of a seat, in particular to a seat back connecting bracket structure. Background Art

[0002] The main structure of the seat includes a seat plate, a backrest and armrests. Usually the seat plate and the backrest are connected and fixed by structural parts, and there is also a way to connect them through an armrest structure. The backrest needs to withstand the pressure generated when the body leans back. It is usually only connected to the seat plate at the bottom, so a more reliable connection structure is required to fix it. Therefore, this design proposes a movable connection bracket structure and an improvement of the connection structure of the seat plate. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art and to provide a seat back connecting bracket structure.

[0004] The technical solution adopted by the utility model to solve the above problems is: the seat plate includes a seat shell, the upper part of the seat shell is covered with a filling flexible pad, the bottom of the seat shell is provided with a backrest connection position and an armrest connection position, the backrest connection position is provided at the rear of the seat shell, the armrest connection positions are provided on both sides of the seat shell, the backrest is fixed to the backrest connection position by a connecting bracket, the connecting bracket is formed into a corner structure, the two ends of the corner structure form a backrest connection part and a seat shell connection part, the backrest connection part is fixedly connected to the rear side surface of the lower end of the backrest, and the seat shell connection part is connected to the backrest connection position. The seat shell is the bottom basic structure of the seat, and multiple structures are connected to it. The backrest connection position and the armrest connection position are provided, and when connected to the backrest, they are connected and fixed by the connecting bracket, and the connecting bracket forms an angle for limiting the angle between the backrest and the seat surface to form a backrest support surface.

[0005] Furthermore, the front side of the connecting bracket is provided with a mounting groove, and the rear part of the backrest is correspondingly provided with a docking groove, the mounting groove is provided with a connecting column and a plug-in body, the docking groove is correspondingly provided with a sleeve hole and a plug-in groove, the connecting column and the sleeve hole are docked and fixed by screws, and the plug-in body and the plug-in groove are relatively plugged and positioned. The mounting groove and the docking groove are used for the fixed installation of the backrest and the connecting bracket, forming a corresponding plug-in and docking structure, which effectively improves the installation accuracy and efficiency.

[0006] Furthermore, the backrest connection position is formed with a connection plane extending backward, the seat shell connection part is fitted with the connection plane, a mounting hole is provided on the backrest connection position, a screw hole is provided on the seat shell connection part, and the connection bracket and the seat shell are fixed by installing bolts in the screw hole and the mounting hole. The connection plane is used to fit the mounting surface to form an effective fixing surface, and the mounting hole and the screw hole relatively form a mounting structure.

[0007] Furthermore, the armrest connection positions are symmetrically arranged on both sides of the seat shell, and an oblong hole is arranged in the armrest connection position, and the length direction of the oblong hole is arranged front and back, and a pair of armrests are symmetrically arranged on both sides of the seat shell and are respectively installed on the armrest connection positions on both sides. The front and rear positions of the armrests can be adjusted to suit people of different body shapes, and can be locked by bolts at the required position.

[0008] Furthermore, the seat shell connection part is formed with weight-reducing grooves, screw holes are arranged between the weight-reducing grooves, and the periphery of the screw holes is formed with a surrounding wall by solid material. In order to reduce the overall weight of the connecting bracket, the seat shell connection part is subjected to material weight reduction to form a groove structure, the surrounding wall is used to form the structural thickness between the grooves, and screw holes are arranged.

[0009] Compared with the prior art, the utility model has the following advantages and effects: the design is an improvement on the connection structure between the backrest and the seat of a chair, and adopts a connecting bracket for fixed installation, which can enhance the supporting effect of the backrest structure, effectively improve the supporting capacity of the backrest, and is suitable for people with heavier weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of this design.

[0011] Figure 2 It is a schematic diagram of the structure in the bottom direction.

[0012] Figure 3 It is a schematic diagram of the structure connecting the front direction of the bracket.

[0013] Figure 4 It is a structural diagram of the backrest rear part (part).

[0014] In the figure: 1, seat shell, 2, backrest connection position, 3, armrest connection position, 4, connecting bracket, 5, backrest connection part, 6, seat shell connection part, 7, mounting groove, 8, docking groove, 9, connecting column, 10, plug-in body, 11, socket hole, 12, plug-in groove, 13, mounting hole, 14, screw hole, 15, oblong hole, 16, armrest, 17, weight reduction groove, 18, backrest. DETAILED DESCRIPTION

[0015] 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.

[0016] A seat back connecting bracket structure, the seat plate includes a seat shell 1, the upper part of the seat shell 1 is covered with a filling flexible pad, the bottom of the seat shell 1 is provided with a back connection position 2 and an armrest connection position 3, the back connection position 2 is arranged at the rear part of the seat shell 1, the armrest connection positions 3 are arranged on both sides of the seat shell 1, the backrest 18 is fixed to the back connection position 2 through a connecting bracket 4, the connecting bracket 4 is formed into a corner structure, and a backrest connecting part 5 and a seat shell connecting part 6 are formed at both ends of the corner structure, the backrest connecting part 5 is fixedly connected to the rear side of the lower end of the backrest 18, and the seat shell connecting part 6 is connected to the backrest connecting position 2.

[0017] The front side of the connecting bracket 4 is provided with a mounting groove 7, and the rear part of the backrest 18 is correspondingly provided with a docking groove 8, the mounting groove 7 is provided with a connecting column 9 and a plug-in body 10, and the docking groove 8 is correspondingly provided with a socket hole 11 and a plug-in groove 12, the connecting column 9 and the socket hole 11 are docked and fixed by screws, and the plug-in body 10 is relatively plugged and positioned with the plug-in groove 12.

[0018] The backrest connection position 2 is formed with a connection plane extending backward, and the seat shell connection part 6 is in contact with the connection plane. A mounting hole 13 is provided on the backrest connection position 2, and a screw hole 14 is provided on the seat shell connection part 6. Bolts are installed on the screw hole 14 and the mounting hole 13 to fix the connection bracket 4 and the seat shell 1.

[0019] The armrest connection position 3 is symmetrically arranged on both sides of the seat shell 1, and an oblong hole 15 is arranged in the armrest connection position 3. The length direction of the oblong hole 15 is arranged front to back. A pair of armrests 16 are symmetrically arranged on both sides of the seat shell 1 and are respectively installed on the armrest connection positions 3 on both sides.

[0020] The seat shell connecting part 6 is formed with weight-reducing grooves 17 , screw holes 14 are arranged between the weight-reducing grooves 17 , and the peripheries of the screw holes 14 are formed with surrounding walls by solid material.

[0021] 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.

[0022] 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 seat back connecting bracket structure, characterized in that: The seat plate comprises a seat shell (1), the upper part of the seat shell (1) is covered with a filling flexible pad, the bottom of the seat shell (1) is provided with a backrest connection position (2) and an armrest connection position (3), the backrest connection position (2) is arranged at the rear part of the seat shell (1), the armrest connection position (3) is arranged on both sides of the seat shell (1), the backrest (18) is fixed to the backrest connection position (2) by a connecting bracket (4), the connecting bracket (4) is formed into a corner structure, and a backrest connection part (5) and a seat shell connection part (6) are formed at both ends of the corner structure, the backrest connection part (5) is fixedly connected to the rear side of the lower end of the backrest (18), and the seat shell connection part (6) is connected to the backrest connection position (2).

2. The seat back connecting bracket structure according to claim 1, characterized in that: The front side of the connecting bracket (4) is provided with a mounting groove (7), and the rear part of the backrest (18) is correspondingly provided with a docking groove (8), the mounting groove (7) is provided with a connecting column (9) and a plug-in body (10), and the docking groove (8) is correspondingly provided with a sleeve hole (11) and a plug-in groove (12), the connecting column (9) and the sleeve hole (11) are docked and fixed by screws, and the plug-in body (10) and the plug-in groove (12) are relatively plugged and positioned.

3. The seat back connecting bracket structure according to claim 1, characterized in that: The backrest connection position (2) is formed with a connection plane extending backwards, and the seat shell connection part (6) is in contact with the connection plane. A mounting hole (13) is provided on the backrest connection position (2), and a screw hole (14) is provided on the seat shell connection part (6). Bolts are installed on the screw hole (14) and the mounting hole (13) to fix the connection bracket (4) and the seat shell (1).

4. The seat back connecting bracket structure according to claim 1, characterized in that: The armrest connection position (3) is symmetrically arranged on both sides of the seat shell (1), and an oblong hole (15) is arranged in the armrest connection position (3). The length direction of the oblong hole (15) is arranged in the front and back direction. A pair of armrests (16) are symmetrically arranged on both sides of the seat shell (1) and are respectively installed on the armrest connection positions (3) on both sides.

5. The seat back connecting bracket structure according to claim 1, characterized in that: The seat shell connecting part (6) is formed with a weight-reducing groove (17), screw holes (14) are arranged between the weight-reducing grooves (17), and the periphery of the screw holes (14) is formed with a surrounding wall by solid material.

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