A portable seat back

Abstract

The utility model discloses a portable seat back, including base and with the base is connected back, the base includes base, is located above the breathable mesh cloth of base and is located below the antiskid mesh cloth of base, wherein the base is hollow annular structure, breathable mesh cloth and antiskid mesh cloth form the mesh cloth bag of being able to be set on the hollow annular structure through the suture. The utility model effectively adapts the ergonomic chair and will the soft texture of the ergonomic chair to the human body.

Description

Technical Field

[0001] This utility model relates to the field of chair technology, and in particular to a portable chair backrest. Background Technology

[0002] Currently, office workers spend over 8 hours a day sitting (more than 60% of their day), and the prolonged use of chairs lacking ergonomic design leads to a high incidence of spinal diseases. Many office workers suffer from cervical spondylosis, lumbar disc herniation, or chest and back pain due to prolonged sitting, and the number of lumbar spine patients continues to rise. A healthy, ergonomically designed office chair can effectively reduce the probability of developing these diseases, making a healthy and comfortable office chair particularly important for office workers. However, traditional lumbar support cushions are too hard, making them too rigid to be comfortable on the chair and failing to deliver the breathability and comfort of an ergonomic chair. At the same time, the backrest lacks elasticity and does not provide adequate support for the lumbar region. Utility Model Content

[0003] Purpose of the utility model: The purpose of this utility model is to provide a portable seat back that effectively adapts to an ergonomic chair and transmits the soft texture of the ergonomic chair to the human body.

[0004] Technical solution: To achieve the above objectives, this utility model discloses a portable seat back, including a base and a backrest connected to the base. The base includes a pedestal, a breathable mesh fabric above the pedestal, and an anti-slip mesh fabric below the pedestal. The pedestal is a hollow ring structure. The breathable mesh fabric and the anti-slip mesh fabric are sewn together to form a mesh bag that can be fitted onto the hollow ring structure.

[0005] Optionally, the anti-slip mesh fabric is provided with rubber anti-slip dots or raised anti-slip texture features.

[0006] Optionally, the backrest and the base are connected by a spring clip, which is an L-shaped spring clip. The upper part of the L-shaped spring clip is fixed to the backrest, and the elastic lower part is fixed to the hollow ring structure of the base.

[0007] Optionally, the angle between the upper part and the lower part of the L-shaped spring is less than 90°.

[0008] Optionally, the spring sheet is a stainless steel sheet, a spring steel sheet, a titanium sheet, or a carbon fiber sheet.

[0009] Optionally, the backrest has a U-shaped frame structure.

[0010] Optionally, the backrest is equipped with reinforcing ribs.

[0011] Optionally, the hollow annular structure is trapezoidal, and the rear side of the hollow annular structure is narrower than the front side.

[0012] Optionally, a lumbar support is provided on the front side of the backrest.

[0013] Optionally, the mesh bag is fixed to the hollow ring structure by ultrasonic welding, glue, or nails; or the mesh bag is surrounded by a rigid ring, and the hollow ring structure is provided with annular grooves that fit the rigid ring.

[0014] Beneficial effects: Compared with the prior art, this utility model has the following advantages: In this utility model, both the breathable seat cushion and the mesh fabric have a certain degree of elasticity. When a person sits on it, the deformation of the breathable seat cushion and the mesh fabric will wrap around the buttocks as much as possible, achieving a good enveloping effect and transmitting the soft texture of the ergonomic chair to the body; The hollow ring structure of this utility model has a certain degree of flexibility because it is a hollow structure. When a person sits on it, it can deform and conform to the ergonomic chair surface of different shapes and curves, thereby maximizing the soft and comfortable characteristics of the ergonomic chair base; The angle between the lower and upper parts of the spring sheet in this utility model is less than 90 degrees, so that the initial angle between the backrest and the base is less than 90 degrees. When the person leans back, an elastic force is generated, thus providing elastic support to the lower back. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0016] Figure 2 This is a diagram showing the usage state of this utility model;

[0017] Figure 3 Axial view of this utility model Figure 1 ;

[0018] Figure 4 Axial view of this utility model Figure 1 ;

[0019] Figure 5 This is an axonometric drawing of the backrest of this utility model;

[0020] Figure 6 This is an isometric drawing of the spring sheet of this utility model;

[0021] Figure 7 This is a top view of the hollow ring structure of this utility model;

[0022] In the diagram: base 1, base 101, breathable mesh fabric 102, anti-slip mesh fabric 103; backrest 2, reinforcing rib 201; spring 3, lumbar support 4. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0024] It should be understood that this invention can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. Rather, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of this invention to those skilled in the art. In the drawings, for clarity, the dimensions and relative dimensions of the components may be exaggerated. The same reference numerals denote the same components throughout.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, a portable chair backrest in this embodiment includes a base 1, a backrest 2, a spring 3, and a lumbar support 4. The backrest 2 is connected to the base 1. The spring 3 is used to adjust the angle between the base 1 and the backrest 2, and also to provide support for the backrest 2. In the initial state, the angle between the front of the base 1 and the backrest 2 is an acute angle. When a person sits on a chair, there is usually a certain distance between them and the backrest. If the person does not actively lean back, that is, if the angle between the waist and thigh is less than 90 degrees, no force can be generated to support the waist. In this invention, the angle between the front of the base 1 and the backrest 2 is set to an acute angle so that the waist can generate a forward thrust as long as it remains upright. Moreover, even with small adjustments and movements of the waist, the backrest and lumbar support can still follow the body's adjustments and continuously provide support for the waist, thereby achieving the best effect.

[0026] The base 1 and backrest 2 are connected by a spring 3. The spring is L-shaped, with the upper part fixed to the backrest and the lower part fixed to the hollow ring structure of the base. The lower part of the L-shaped spring has a T-shaped structure to increase the fixation. The upper part of the L-shaped spring is fixed to the backrest by bolts or other means. The angle between the upper and lower parts of the L-shaped spring is less than 90°, ensuring that the initial angle between the backrest and the base is less than 90 degrees, generating a spring force when the user leans back. The spring is made of stainless steel, spring steel, titanium, or carbon fiber.

[0027] The backrest 2 has a U-shaped frame structure, or it can be a single piece of board. The backrest 2 is equipped with reinforcing ribs 201, which are used to prevent the backrest frame from being damaged or undergoing irreversible large deformation due to excessive force. A lumbar support 4 is provided on the front side of the backrest 2. There is a rotating joint between the lumbar support and the backrest. The lumbar support 4 is hinged to the backrest 2 through the backrest connector 202.

[0028] like Figure 7As shown, the base 1 includes a base 101, a breathable mesh fabric 102, and an anti-slip mesh fabric 103. The upper surface of the base 101 is provided with the breathable mesh fabric 102, and the lower surface of the base 101 is provided with the anti-slip mesh fabric 103. The base 101 is made of engineering plastics such as PP, which has good resistance to deformation and toughness. The breathable mesh fabric 102 is elastic and breathable, providing good support for the buttocks and improving comfort when sitting. The anti-slip mesh fabric 103 is located at the bottom of the base 101, effectively preventing the chair from sliding. The anti-slip mesh fabric 103 has raised anti-slip textures or rubber anti-slip dots and other anti-slip structures. The base 101 has a hollow ring structure, and the base 1 adopts a rigid-flexible coupling design, making it more compatible with chairs and sofas of different materials. Breathable mesh fabric 102 and anti-slip mesh fabric 103 are sewn together to form a mesh bag that can be fitted onto the hollow ring structure. The mesh bag is fixed to the hollow ring structure by ultrasonic welding or glue, among other methods. The hollow ring structure is made of PP plastic and, because it has no structural components in the middle, possesses good toughness, allowing it to conform well to various objects such as ergonomic chairs, sofas, and other non-flat surfaces. The mesh bag can be a mesh-shaped polymer material, a fabric with a certain degree of elasticity, or a thinner plastic component. When a person sits on the breathable mesh fabric 102, the mesh bag will slightly concave and deform, better conforming to the buttocks. If the base 101 is placed on some flexible ergonomic chairs, the mesh bag can retain the original flexibility of the ergonomic chair as much as possible. The structure of the base 1 provides better comfort and breathability. The hollow ring structure can be trapezoidal, narrower at the back and slightly wider at the front. This allows the sewn mesh fabric to be inserted, with high initial tension that decreases as it's inserted further, ensuring a firm hold on the mesh fabric to the hollow base frame and preventing slippage. The mesh bag's size is close to the base's size. The mesh bag is sewn together to form a pouch-like structure, which is then fitted onto the hollow ring structure. The pouch is slightly smaller than the ring structure, maintaining some tension. The pouch is then secured around its perimeter using ultrasonic welding, glue, or nails. Alternatively, the mesh bag can be surrounded by rigid rings, with annular grooves on the hollow ring structure that fit the rigid rings. The rigid rings engage with these grooves, securing the mesh bag to the hollow ring structure.

[0029] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A portable seat backrest, comprising a base (1) and a backrest (2) connected to the base (1), characterized in that: The base (1) includes a base (101), a breathable mesh fabric (102) located above the base, and an anti-slip mesh fabric (103) located below the base. The base (101) is a hollow ring structure. The breathable mesh fabric (102) and the anti-slip mesh fabric (103) are sewn together to form a mesh bag that can be fitted onto the hollow ring structure.

2. A portable seat backrest according to claim 1, characterized in that: The anti-slip mesh (103) is provided with rubber anti-slip dots or raised anti-slip texture features.

3. A portable seat backrest according to claim 1, characterized in that: The backrest (2) and the base (1) are connected by a spring (3). The spring is an L-shaped spring. The upper part of the L-shaped spring is fixed to the backrest, and the elastic lower part is fixed to the hollow ring structure of the base.

4. A portable seat backrest according to claim 3, characterized in that: The angle between the upper part and the lower part of the L-shaped spring is less than 90°.

5. A portable seat backrest according to claim 3, characterized in that: The spring sheet is made of stainless steel, spring steel, titanium, or carbon fiber.

6. A portable seat back according to claim 1, characterized in that: The backrest (2) is a U-shaped frame structure.

7. A portable seat backrest according to claim 1, characterized in that: The backrest (2) is provided with reinforcing ribs (201).

8. A portable seat back according to claim 1, characterized in that: The hollow annular structure is trapezoidal, and the rear side of the hollow annular structure is narrower than the front side.

9. A portable seat back according to claim 1, characterized in that: The backrest (2) is provided with a lumbar support (4) on the front side.

10. A portable seat back according to claim 1, characterized in that: The mesh bag is fixed to the hollow ring structure by ultrasonic welding, glue, or nails; or the mesh bag is surrounded by a rigid ring, and the hollow ring structure is provided with annular grooves that fit the rigid ring.

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