Waist supporting structure and seat

Abstract

The utility model discloses a waist supporting structure and a seat, belongs to the field of seats, is used for sitting of a human body, and solves the problem of adjustment of a waist supporting angle. The waist supporting structure comprises a supporting body, the supporting body can be bent and shaped at any angle, and mounting plates are arranged at the two ends of the supporting body. The seat comprises a waist supporting structure, a waist rest, a backrest, back supports, a seat cushion and a base, the seat cushion is installed above the base, the waist rest and the backrest are sequentially arranged along the rear end of the base from bottom to top, the back supports are oppositely arranged on the rear sides of the waist rest and the backrest, the back supports are connected to the waist rest through the waist supporting structure, and the seat cushion is installed on the base. The backrest is connected to the back support, and the back support is connected to the base.

Description

Technical Field

[0001] The utility model belongs to the field of seats, and in particular relates to a seat with adjustable waist angle. Background Art

[0002] Most existing chairs feature adjustable seats, armrests, headrests, and backrests, meeting the comfort requirements of various sitting postures. For office chairs, users spend extended periods of time sitting, requiring lumbar support. Therefore, improved lumbar support is particularly important. Existing lumbar support structures utilize multiple moving and connecting components, increasing the complexity of the assembly and making adjustments inconvenient. Utility Model Content

[0003] The purpose of the utility model is to provide a waist support structure to achieve adjustment of the waist support angle.

[0004] A waist support structure comprises a support body, wherein the support body can be bent and shaped at any angle, and mounting plates are arranged at both ends of the support body.

[0005] The support body can be unfolded into a belt shape.

[0006] The support body can be folded into a concave-convex shape.

[0007] The support body is a flexible elastic body.

[0008] The utility model also provides a seat, which can adjust the waist angle.

[0009] A chair includes a lumbar support structure, a lumbar support, a backrest, a back support, a seat cushion, and a base. The seat cushion is installed above the base. The lumbar support and the back support are arranged in sequence from bottom to top along the rear end of the base. The back support is arranged on the rear side of the lumbar support and the back support and in a position opposite to each other. The back support is connected to the lumbar support through the lumbar support structure, the back support is connected to the back support, and the back support is connected to the base.

[0010] A bracket extends from the base, and two sides of the waist support are rotatably connected to the bracket.

[0011] The bottom end of the back bracket is connected to the rear end of the base through the bottom end of the bracket.

[0012] The back support is rotatably connected to the headrest via a torsion spring.

[0013] One end of the headrest is connected to the top end of the back support, and the other end of the headrest is arranged above the backrest.

[0014] The beneficial effects of the present invention are as follows: by arranging a lumbar support structure on the lumbar support, when the lumbar support changes shape with the human body posture, the flexibility of the support body can be used to arbitrarily change the human body shape to adapt to the human body comfort. At the same time, the lumbar angle can be adjusted accordingly according to the rotation of the back support to achieve the effect of supporting the lumbar. The adjustment method is simple and the operability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional diagram of the waist support structure of the utility model;

[0016] Figure 2 A three-dimensional diagram of the seat of the present invention;

[0017] Figure 3 for Figure 1 Side view of the seat shown. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below with reference to the accompanying drawings.

[0019] like Figure 1 、 2 As shown in Figures 3 and 4, the waist support structure consists of a flexible support body 1. Mounting plates 2 are provided at both ends of the support body 1 along the width direction of the support body 1. The mounting plates are also provided with mounting holes 3. The support body 1 is unfolded into a strip shape and folded into a concave-convex shape. The support body 1 is made of a flexible elastomer material, preferably PP, PE plastics and other materials for soft rubber products.

[0020] The above-mentioned lumbar support structure is applied to a seat, which includes a headrest 4, a lumbar support structure, a lumbar support 6, a backrest 7, a back support 8, a seat cushion 5 and a seat plate 9. The seat cushion 5 is screwed to the top of the base 9, and two armrests 12 extend from the front end of the base 9. The two armrests 12 are symmetrically distributed on both sides of the seat cushion 5.

[0021] The lumbar support 6 and back support 7 are located at the rear end of the base 9, arranged in order from bottom to top. A back support 8 is located behind the lumbar support 6 and back support 7, facing each other. The back support 7 is hingedly connected to the back support 8. Brackets 10 extend from both sides of the rear end of the base 9. The sides of the lumbar support 6 are rotatably connected to the brackets 10 via first shafts 13. The bottom end of the back support 8 is connected to the rear end of the base 9 via screws at the bottom end of the brackets 10.

[0022] The back support 8 is fixed to the support body 1 through the mounting holes 3 of the mounting plate 2 by screws, and the support body 1 is fixed to the lumbar support 6 through the mounting holes 3 of the mounting plate 2 by screws.

[0023] Back support 8 is rotatably connected to headrest 4 via torsion spring 11 and second shaft 14. One end of headrest 4 is connected to the top of back support 8, and the other end of headrest 4 is positioned above backrest 7. The headrest 4, backrest 7, and lumbar support 6 sequentially support the head, back, and waist of the human body. When the head presses against the headrest 4, the rebound action of torsion spring 11 provides a rotational elastic buffer for the headrest 4, while also enabling height adjustment of the head.

[0024] During use, the user sits on the seat cushion 5, the backrest 7 pushes the back bracket 8, the back bracket 8 rotates, the back bracket 8 pulls the support body 1, and the support body 1 pulls the lumbar support 6 to rotate along both sides of the bracket 10. The support body 1 can be bent and shaped at any angle to adapt to the waist posture supported by the lumbar support 6 at any time, and the waist angle is adjusted accordingly by rotating the back bracket 8 to achieve the effect of supporting the waist.

[0025] The above-mentioned seat is only provided with a support body with flexible elastic properties, which can enable the human waist to be adaptively adjusted to a comfortable posture. The entire adjustment method is simple and highly operable.

Claims

1. A lumbar support structure, characterized in that: It comprises a support body (1), the support body (1) can be bent and shaped at any angle, and mounting plates (2) are provided at both ends of the support body (1).

2. The lumbar support structure according to claim 1, characterized in that The support body (1) can be unfolded into a strip shape.

3. The lumbar support structure according to claim 1, characterized in that The support body (1) can be folded into a concave-convex shape.

4. The lumbar support structure according to claim 2, wherein: The support body (1) is a flexible elastic body.

5. A chair comprising the lumbar support structure according to any one of claims 1 to 4, characterized in that: The invention also includes a lumbar support (6), a backrest (7), a back support (8), a seat cushion (5) and a base (9), wherein the seat cushion (5) is installed above the base (9), and the lumbar support (6) and the backrest (7) are arranged in sequence from bottom to top along the rear end of the base (9), and the back support (8) is arranged on the rear side of the lumbar support (6) and the backrest (7) and in a position opposite to each other, and the back support (8) is connected to the lumbar support (6) through a lumbar support structure, the backrest (7) is connected to the back support (8), and the back support (8) is connected to the base (9).

6. The seat according to claim 5, characterized in that A bracket (10) extends from the base (9), and both sides of the lumbar support (6) are rotatably connected to the bracket (10).

7. The seat according to claim 6, characterized in that The bottom end of the back bracket (8) is connected to the rear end of the base (9) through the bottom end of the bracket (10).

8. The seat according to claim 5, characterized in that The back support (8) is rotatably connected to the headrest (4) via a torsion spring (11).

9. The seat according to claim 8, characterized in that One end of the headrest (4) is connected to the top end of the back support (8), and the other end of the headrest (4) is arranged above the backrest (7).

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