Seat conforming to human engineering

Abstract

The utility model provides an ergonomic seat. The ergonomic seat is provided with a placing surface, a bearing surface, a front supporting surface and a rear supporting surface, wherein the placing surface is a plane where the seat is placed on the ground. The bearing face is used for bearing the buttocks of the human body, and the bearing face inclines backwards and downwards. The front supporting face and the rear supporting face are located on the two sides between the placing face and the bearing face respectively, and the front supporting face is located on the face, close to the legs of the human body, between the front supporting face and the rear supporting face. According to the structure, through the angle design that the bearing face inclines backwards and downwards, the bearing face supports the hip ischium area and meanwhile guides the pelvis to incline backwards, the spine maintains the natural physiological curvature, and in cooperation with the inclined structure of the front supporting face, a guiding interface attached to the curve of the lower limb is formed so as to relieve knee fossa compression; and the anti-overturning stability of the seat is enhanced through reconstruction of a mechanical conduction path, so that the sitting posture of long-time sitting is stable, and fatigue and tiredness are avoided after long-time sitting.

Description

Technical Field

[0001] This utility model relates to the field of seat structure, and in particular to an ergonomic seat. Background Technology

[0002] Most common chair support structures are based on a horizontal plane. While they provide basic support, they lack active guidance for pelvic dynamics, leading to abnormal spinal curvature in users. When a user sits down, a horizontal or forward-leaning chair surface forces the ischium contact point forward, triggering a chain reaction of anterior pelvic tilt. This causes excessive forward curvature of the lumbar spine, disrupting the natural balance of the spine's force line and inducing compensatory strain of the lumbar muscles and abnormal distribution of intervertebral disc pressure.

[0003] At the same time, the right-angle design of the front edge of a conventional seat can easily create rigid pressure on the knee area, which not only hinders blood circulation in the lower limbs, but also causes the knee to undergo adaptive adjustments due to continuous pressure, resulting in lower seating comfort. Utility Model Content

[0004] In view of the shortcomings mentioned above, this utility model provides an ergonomic chair.

[0005] The present invention adopts the following technical solution:

[0006] An ergonomic chair that has:

[0007] A placement surface, the placement surface being used for placement on the ground;

[0008] The support surface is used to support the human buttocks. With the vertical axis of the seat when it is placed horizontally as a reference, the support surface is tilted backward and downward at 3 to 6 degrees.

[0009] The front support surface is located between the placement surface and the support surface, close to the human leg. With the vertical axis when the seat is placed horizontally as a reference, the front support surface is tilted downward and backward at 5 to 12 degrees relative to the position where the human is sitting.

[0010] In one possible implementation, the support surface is tilted backward and downward relative to the position where the human body is seated, to the point that the support surface is tilted at 4° relative to the placement surface.

[0011] In one possible implementation, the front support surface is tilted downward and backward relative to the position where the human body is seated, to the point that the front support surface is tilted at 8° relative to the placement surface.

[0012] In one possible implementation, the seat also has a rear support surface located on one side of the placement surface and the support surface relative to the front support surface, and the rear support surface is perpendicular to the support surface.

[0013] In one possible implementation, the seat is made of stone.

[0014] As can be seen from the above description of the structure of this utility model, compared with the prior art, this utility model has the following advantages: By designing the support surface to be tilted backward and downward, this utility model allows the support surface to support the ischial region of the buttocks while guiding the pelvis to tilt backward, so that the spine maintains its natural physiological curvature. Combined with the tilted structure of the front support surface, it not only forms a guiding interface that conforms to the curve of the lower limb to relieve pressure on the back of the knee, but also enhances the anti-overturning stability of the seat through the reconstruction of the mechanical transmission path. Therefore, it conforms to the ergonomics of a seating seat and achieves multi-dimensional comfort improvement. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention viewed from below.

[0016] Figure 2 This is a top-view three-dimensional structural diagram of the present invention.

[0017] Figure 3 This is a side view of the present invention.

[0018] Figure 4 This is a side view of a person sitting behind the seat of this utility model.

[0019] Figure 5 This is a schematic diagram of one embodiment of the present invention.

[0020] Figure 6 This is a schematic diagram showing another embodiment of the present invention. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the application will now be described in further detail with reference to the accompanying drawings.

[0022] In this application, directional terms such as "upper," "lower," "front," and "rear" are defined relative to the indicated placement of the components in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the placement of the components in the accompanying drawings.

[0023] This utility model provides an ergonomic chair, as shown in the attached figure. Figure 1 and 2As shown, the seat has a placement surface 1, a support surface 2, a front support surface 3, and a rear support surface 4. Specifically, the placement surface 1 is the flat surface on which the seat of this invention is placed on the ground, the support surface 2 is the surface used to support the buttocks of the human body, the front support surface 3 and the rear support surface 4 are located on both sides between the placement surface 1 and the support surface 2, and the front support surface 3 is located between the front support surface 3 and the rear support surface 4 on the side closer to the human body's legs.

[0024] As attached Figure 3 and 4 As shown, with the vertical axis of the seat when it is horizontally placed as a reference, the support surface 2 is tilted backward and downward at 3-6°. When the user sits down, the tilt angle naturally guides the pelvis to tilt backward, accurately supporting the ischial tuberosity area of ​​the buttocks and distributing the body's weight. Therefore, it conforms to ergonomics and achieves multi-dimensional comfort improvement. Preferably, the support surface 2 is tilted backward and downward relative to the position where the user sits, up to 4° relative to the placement surface 1.

[0025] Continue to refer to the appendix Figure 3 and 4 With the vertical axis of the seat when it is placed horizontally as a reference, the front support surface 3 is tilted downwards and backwards at a angle of 5-12° relative to the position where the user sits, forming a guiding interface that conforms to the curve of the lower limbs after the user sits on it. This creates an inward-curving structure at the bottom of the seat, providing a comfortable place for the feet. This tilt angle precisely adapts to the physiological curvature of the thighs and calves, avoiding pressure on the back of the knees and guiding gravity smoothly to the support base. Furthermore, while optimizing foot space, the front support surface 3, through the reconstruction of the mechanical transmission path, transforms the human body load into the anti-tipping potential energy of the entire seat, achieving a deep unity of functionality and safety, and maintaining the stability of the seat. Preferably, the front support surface 3 is tilted downwards and backwards relative to the position where the user sits, up to an 8° tilt relative to the placement surface 1.

[0026] Continue to refer to the appendix Figure 3 The rear support surface 4 is perpendicular to the supporting surface 2, which facilitates the cutting of this utility model. For example, when the seat of this utility model is made of stone, since the stone block itself has two relatively perpendicular surfaces, the following two cutting processes can be used to obtain the seat of this utility model:

[0027] One method is the reference plane cutting method (as shown in the attached diagram). Figure 5 It only requires unilateral directional cutting of the front and rear support surfaces to form the stone, preserving the original structure of the stone to the maximum extent, reducing the amount of cutting by more than 60% and increasing the raw material utilization rate to 85%;

[0028] The second is the inclined sectioning composite process (as shown in the attached document). Figure 6 The raw block is divided into symmetrical double pieces (i.e., attached pieces) by oblique cutting along the centerline. Figure 6The two pieces are then processed again on their narrow sides (i.e., the shaded parts are cut off) to form a support surface with an angle of 2, so as to achieve simultaneous processing of the two pieces and symmetrical distribution of natural textures, thus doubling the efficiency of the main process.

[0029] It is evident that the structural design, in which the rear support surface 4 is perpendicular to the supporting surface 2, optimizes the cutting path and the utilization mode of raw materials, simplifying the traditional multi-process to 2-3 core steps, greatly improving the overall processing efficiency and reducing processing energy consumption. It also takes into account the standardized requirements of industrial production and the natural texture of artistic design, providing an innovative solution for the stone furniture industry that combines technological innovation and economic benefits.

[0030] In summary, this utility model provides an ergonomically designed chair whose structure comprises four core surfaces: a placement surface 1, a support surface 2, a front support surface 3, and a rear support surface 4. The downward and backward tilt of the support surface 2 supports the ischial tuberosity area of ​​the buttocks while guiding the pelvis backward, maintaining the natural physiological curvature of the spine. Combined with the tilted structure of the front support surface 3, this creates a guiding interface that conforms to the lower limb curve to alleviate pressure on the back of the knees, and also enhances the chair's anti-tipping stability through a reconstructed mechanical transmission path, achieving stable posture during long periods of sitting without fatigue. The innovative design of the rear support surface 4, perpendicular to the support surface 2, is adapted to stone processing techniques, significantly increasing the efficiency of the chair manufacturing process. Therefore, this utility model, through angle optimization, comprehensively achieves multi-dimensional technological breakthroughs, including improved human comfort, reduced processing energy consumption, and increased stone utilization, providing an innovative solution for the industrial production of chairs that balances functionality and economy.

[0031] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. An ergonomic seat, characterized by, The seat has: a placement surface for placement on the ground; a bearing surface for bearing the human buttocks, which is inclined rearward and downward by 3-6° with respect to the vertical axis when the seat is placed horizontally; a front support surface between the placement surface and the bearing surface, which is inclined downward and rearward by 5-12° with respect to the position of the human body when the seat is placed horizontally.

2. The seat of claim 1, wherein The bearing surface is inclined rearward and downward with respect to the position of the human body, until the bearing surface is inclined by 4° with respect to the placement surface.

3. The seat of claim 1, wherein The front support surface is inclined downward and rearward with respect to the position of the human body, until the front support surface is inclined by 8° with respect to the placement surface.

4. The seat of claim 1, wherein The seat further has a rear support surface between the placement surface and the bearing surface, which is opposite the front support surface, and which is perpendicular to the bearing surface.

5. The seat of claim 1 or 4, wherein The seat is made of stone.

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