Ergonomic chair

Abstract

The utility model discloses an ergonomic chair. The ergonomic chair comprises a base plate, a plate frame assembly, a chair seat and a chair back, the plate frame assembly and the chair back are connected to the base plate, the chair seat is connected to the plate frame assembly, and the plate frame assembly is arranged in a pitching-up inclined mode so that the chair seat can be in a pitching-up inclined state. According to the utility model, the plate frame assembly is arranged in a pitching-up inclined manner, so that the chair seat is in a pitching-up inclined state, that is, when a human body sits down, the hip supporting part at the rear part of the chair seat is lower than the thigh supporting area at the front end part, the gravity center of the human body naturally moves backwards, the lower parts of the thighs are slightly higher than the horizontal plane, and the posture is beneficial to dispersing the pressure of the hip and the thighs; the pressure of long-time sitting on the muscles of the two parts is reduced, so that the sitting comfort of the user is remarkably improved, the pressure of the seat surface on the thigh muscles can be effectively released, and uncomfortable symptoms such as muscle numbness or pain are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of ergonomic chairs, and particularly relates to an ergonomic chair for the human body. Background Art

[0002] The seat surface of the existing chair is designed to be close to horizontal. After the user sits down, the seat surface is compressed, causing the thighs to hang down. Such a sitting posture can easily compress the thigh muscles, affect blood circulation, and easily lead to discomfort symptoms such as muscle numbness or pain after sitting for a long time. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an ergonomic chair for the human body.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] An embodiment of the utility model provides an ergonomic chair for the human body, including: a chassis, a plate frame assembly, a seat and a backrest. The plate frame assembly and the backrest are connected to the chassis, the seat is connected to the plate frame assembly, and the plate frame assembly is arranged in an upward tilt, so that the seat is in an upward tilt state.

[0006] In a specific embodiment, the plate frame assembly includes a front cross plate, a fixing plate and a vertical pipe. The fixing plate is provided with a bent plate arranged in an upward tilt. One end of the vertical pipe is connected to the front cross plate, and the other end is connected to the bent plate. The seat is connected to the vertical pipe, and the fixing plate is connected to the chassis.

[0007] In a specific embodiment, chair arms are further arranged on both sides of the seat. An armrest wing is connected to the side part of the vertical pipe, and the chair arm is connected to the armrest wing.

[0008] In a specific embodiment, a pedal assembly is further connected below the front cross plate. The pedal assembly includes a mounting seat, a sliding rod and a footrest. The mounting seat is connected to the front cross plate, the sliding rod is slidably connected to the mounting seat, and the footrest is rotatably connected to the sliding rod.

[0009] In a specific embodiment, the backrest is further provided with back leaf support members that are symmetric about the left and right.

[0010] In a specific embodiment, the back leaf support members are provided with a plurality of ventilation holes, and massage accessories are installed in some of the ventilation holes.

[0011] In a specific embodiment, the back leaf support members and the backrest are connected by elastic connection members.

[0012] In a specific embodiment, an airbag member is further arranged on the back of the backrest where the back leaf support members are located, and the airbag member is connected to an inflation adjusting member.

[0013] In a specific embodiment, a lumbar support is further provided between the two back leaf supports.

[0014] In a specific embodiment, the chair back is further provided with a headrest.

[0015] The ergonomic chair of the present utility model has the following beneficial effects compared with the prior art: the plate frame assembly is arranged in an upwardly inclined manner, so that the seat is in an upwardly inclined state. That is, when a person sits down, the area where the rear part of the seat supports the buttocks is lower than the area where the front end supports the thighs. This design allows the center of gravity of the human body to naturally shift backward, and the lower part of the thighs is slightly higher than the horizontal plane. This posture helps to disperse the pressure on the buttocks and thighs, reduce the compression of the muscles in these two parts during long-term sitting, thereby significantly improving the sitting comfort of the user, effectively releasing the compression force of the seat surface on the thigh muscles, and avoiding discomfort symptoms such as muscle numbness or pain.

[0016] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the accompanying drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic structural diagram of the ergonomic chair provided by the present utility model;

[0019] Figure 2 It is an exploded schematic diagram of the ergonomic chair provided by the present utility model;

[0020] Figure 3 It is a functional schematic diagram of the chair back, the airbag and the seat provided by the present utility model;

[0021] Figure 4 It is a schematic structural diagram of the plate frame assembly provided by the present utility model;

[0022] Figure 5 It is a schematic sectional view of the plate frame assembly provided by the present utility model;

[0023] Figure 6 It is a schematic structural diagram of the massage accessory provided by the present utility model;

[0024] Figure 7 It is a schematic sectional view of the massage accessory provided by the present utility model;

[0025] Figure 8Schematic diagram of the application scenario of the ergonomic chair provided by the present utility model. Detailed implementation manners

[0026] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without making creative efforts fall within the protection scope of the present utility model.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0029] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0030] In the present utility model, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below", and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0032] In the description of this specification, the description of reference terms such as "an embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0033] See Figures 1 to 8 In the specific embodiment shown, the present utility model discloses an ergonomic chair, including: a chassis 10, a plate frame assembly 20, a seat 30, and a backrest 40. The plate frame assembly 20 and the backrest 40 are connected to the chassis 10, the seat 30 is connected to the plate frame assembly 20, and the plate frame assembly 20 is arranged in an upward tilt, so that the seat 30 is in an upward tilt state.

[0034] Specifically, the plate frame assembly 20 is set to be upwardly inclined, so that the seat 30 is in an upwardly inclined state. That is, when a person sits down, the area where the rear part of the seat 30 supports the buttocks is lower than the area where the front end supports the thighs. This design makes the center of gravity of the human body move backward naturally, and the lower part of the thighs is slightly higher than the horizontal plane. This posture helps to disperse the pressure on the buttocks and thighs, reduce the compression of the muscles in these two parts during long-term sitting, and thus significantly improve the sitting comfort of the user. It can effectively relieve the compression force of the seat surface on the thigh muscles and avoid discomfort symptoms such as muscle numbness or pain. In addition, when a person sits in this posture, the blood circulation in the thighs and buttocks will be better promoted, because the compression on these two parts is reduced, and the patency of blood vessels and nerves is enhanced, which helps to reduce problems such as lower limb numbness and swelling caused by poor blood circulation. In addition, this design fully considers the natural curve and force distribution of the human body in the sitting posture, and adapts to the physiological characteristics of the human body by adjusting the angle of the seat 30, making the sitting posture more scientific and reasonable, in line with the ergonomic principle. This not only helps to improve comfort, but also can effectively prevent various health problems caused by poor sitting postures. In addition, a comfortable sitting environment plays an important role in improving work efficiency. When employees or students work on a comfortable chair, their attention and concentration can be better maintained, thereby reducing distractions caused by physical discomfort and improving the efficiency of work or study.

[0035] See Figures 1 to 5 As shown, in an embodiment, the plate frame assembly 20 includes a front cross plate 21, a fixed plate 22 and a vertical tube 23. The fixed plate 22 is provided with a bent plate 221 that is upwardly inclined. One end of the vertical tube 23 is connected to the front cross plate 21, and the other end is connected to the bent plate 221. The seat 30 is connected to the vertical tube 23, and the fixed plate 22 is connected to the chassis 10.

[0036] Specifically, the front crossplate 21 is formed by bending and welding the four sides of a metal plate to form a box shape with an open top, and tooth holes are provided at the bottom for installing the pedal assembly 60. Groove structures are provided on the left and right sides of the opening of the front crossplate 21 for placing and welding two semi-circular vertical pipes 23. The vertical pipes 23 are provided with installation holes through which screws can be inserted to lock the bottom of the seat 30. The fixing plate 22 is formed by bending the two sides of a metal plate to form bending plates 221, and the bending plates 221 on both sides present an oblique angle. Four threaded holes are provided at the bottom of the fixing plate 22, and the bending plates 221 are welded to the vertical pipes 23 so that the entire plate frame assembly 20 tilts upward at a certain angle. The lower horizontal plane of the fixing plate 22 is fixedly connected to the chassis 10, and the upper plane of the vertical pipe 23 and the installation surfaces such as the front crossplate 21 form an upward tilting state, thereby supporting the seat surface of the seat 30 to form an upward tilting state synchronously. In addition, through the combined connection of the front crossplate 21, the fixing plate 22, the bending plates 221 and the vertical pipes 23, a stable support structure is formed. This structure has high stability in mechanics, can effectively resist external loads, and prevent the plate frame assembly 20 from deforming.

[0037] Preferably, as shown in Figure 3 and Figure 5 The upward tilting angle of the plate frame assembly 20 is 7 degrees, that is, the upward tilting angle of the seat 30 is 7 degrees. Among them, the design of the 7-degree upward tilting angle conforms to the ergonomic principle, which helps the human body to maintain a natural and comfortable posture when sitting. This design can reduce the pressure on the spine and waist and reduce the fatigue caused by long-term sitting. In addition, the tilted seat 30 can better fit the human body curve, especially the curves of the waist and hips, thereby providing a more uniform supporting force, which helps to disperse the body weight, reduce the single-point pressure, and improve the overall supporting effect. In addition, an appropriate tilting angle helps to maintain the natural curvature of the spine and reduce the spinal curvature or deformation caused by long-term bad sitting postures, which is of great significance for preventing spinal diseases and protecting spinal health.

[0038] As shown in Figures 1 to 2 In an embodiment, chair armrests 50 are further provided on both sides of the seat 30. An armrest flank 24 is connected to the side of the vertical pipe 23, and the chair armrest 50 is connected to the armrest flank 24.

[0039] Specifically, the armrest flanks 24 are symmetrically welded to the left and right sides of the vertical pipe 23 and are provided with threaded holes for installing the chair armrest 50. Among them, the most direct function of the chair armrest 50 is to provide support for the user's hands. When sitting for a long time, people often need to place their arms somewhere to relieve fatigue, and the chair armrest 50 just meets this need. It allows the arms to relax and reduces the discomfort caused by the arms hanging in the air. In addition, the chair armrest 50 also helps to enhance the stability of the user's sitting posture; when changing the sitting posture or performing certain actions, the chair armrest 50 can be used as a support point to help the user maintain balance and prevent losing stability due to excessive movements.

[0040] See Figures 1 to 3 and Figure 8 As shown in, in one embodiment, a pedal assembly 60 is further connected below the front cross plate 21. The pedal assembly 60 includes a mounting seat, a sliding rod, and a footrest. The mounting seat is connected to the front cross plate 21, the sliding rod is slidably connected to the mounting seat, and the footrest is rotatably connected to the sliding rod.

[0041] Specifically, when the human body is resting in a lying position, it is necessary to stretch the legs, and the pedal can be used to support and lift the legs. Among them, the pedal assembly 60 is installed below the front cross plate 21 and can be folded and stored; when in use, pull out the sliding rod forward and then flip the footrest upward. When the chair backrest is adjusted backward to the maximum tilt angle, the chair back 40 and the seat surface can maintain a large (for example: 132°) angle. Combined with the footrest's function of supporting the feet, the comfort of the human body can be maximized when resting, and at this time, the pressure on the lumbar spine and the gluteal and leg muscles can also be effectively relieved. In addition, the design of the sliding rod being slidably connected to the mounting seat enables the footrest to move back and forth within a certain range, and this design can be adjusted according to the user's height, sitting posture, or specific needs to achieve the best use effect.

[0042] See Figures 1 to 2 and Figure 8 As shown in, in one embodiment, the chair back 40 is further provided with left and right symmetric back leaf support members 70.

[0043] Specifically, the back leaf support 70 is made of hard plastic and has sufficient hardness and strength to support the human back. This hard support can effectively disperse the pressure borne by the back and reduce the discomfort caused by single-point pressure. In addition, the design of the back leaf support 70 takes into account the principles of ergonomics and adopts an arc-shaped profile to fit the natural curve of the human back. This design can ensure that the lumbar spine can maintain its natural physiological curvature in a sitting position, avoiding lumbar spine deformation or pressure concentration caused by long-term sitting. In addition, through the left-right symmetric design of the back leaf support 70, the pressure borne by the back can be evenly distributed on both sides, reducing pressure concentration on a single part, thereby improving the comfort of the sitting position. In addition, although the design of the back leaf support 70 is fixed, its arc-shaped profile and hard support characteristics can, to a certain extent, adapt to users of different body types. Whether tall, short, fat or thin, users can find a relatively comfortable back support point in a sitting position.

[0044] See Figures 1 to 2 、and Figures 6 to 7 As shown, in one embodiment, the back leaf support 70 is provided with a plurality of ventilation holes, and massage fittings 80 are installed in some of the ventilation holes.

[0045] Specifically, the design of the ventilation holes allows air to circulate freely, effectively reducing the stuffy feeling on the back caused by long-term contact with the chair back 40. This is particularly important for users in hot weather or those who sit for long periods of work, and can significantly improve the comfort of use. In addition, the ventilation holes can reduce the accumulation of sweat on the back skin and reduce the risk of skin irritation and other skin problems caused by a humid environment. In addition, massage fittings 80 are installed in some of the ventilation holes, and these fittings can provide a massage effect when the user is sitting, which can relieve the tension and fatigue of the back muscles and promote blood circulation. In addition, the massage fittings 80 are made of a type of elastic plastic or silicone material. This fitting has a support end and a mounting end, and the head of the mounting end is conical. The shape of the support end can be star-shaped, round, triangular, or other existing market fittings with a certain shape. Users can directly insert the massage fittings 80 into the ventilation holes for installation, or install them according to the different acupoints corresponding to the human lumbar and dorsal regions. When in use, leaning on the back leaf support 70, the protruding shape of the support end can perform acupoint massage on the lumbar and dorsal regions, making it have a certain effect of relieving fatigue. In addition, the ventilation holes can not only be star-shaped, but also other shapes such as round, oval, pentagram, triangle, or a shape similar to a peanut shape.

[0046] See Figures 1 to 2 As shown, in one embodiment, the back leaf support 70 is connected to the chair back 40 through an elastic connecting member 90.

[0047] Specifically, the elastic connecting member 90 uses existing market accessories, including an external plastic decorative cover and an internal metal spring connecting member, etc. The elastic connecting member 90 is used to fix the back leaf support member 70 to the chair back 40 and is fastened and locked with screws. Through elastic support, the back leaf support member 70 can be finely adjusted according to the user's back shape and sitting posture changes, so as to maintain a closer fit. This adaptability helps to improve the user's comfort and reduce the fatigue caused by maintaining the same sitting posture for a long time. In addition, due to the existence of the elastic connecting member 90, the back leaf support member 70 can better adapt to users with different body shapes and sitting posture habits. Whether tall or short, fat or thin, users can feel the stable and comfortable support from the back leaf support member 70.

[0048] See Figures 1 to 2 As shown, in an embodiment, an airbag member 100 is further provided on the back of the chair back 40 where the back leaf support member 70 is located, and the airbag member 100 is connected to an inflation adjustment member 110.

[0049] Specifically, the inflation adjustment member 110 is composed of an inflation ball, a one-way valve and an inflation tube, which are existing market accessories. Among them, there are 2 airbag members 100, namely, at the upper and lower positions on the front side of the chair back 40, and there are also 2 inflation adjustment members 110, which are provided on the right side of the chair back 40. Users can adjust the support height of the upper and lower airbag members 100 through the inflation adjustment member 110, so as to form an inclined support effect of an angle in the vertical direction behind the human body by the back leaf support member 70, which can well improve the comfort of the back leaf support and effectively prevent and relieve low back and back fatigue. That is to say, the airbag member 100 can adjust the inflation amount according to the needs of the user through the inflation adjustment member 110, so as to realize the support for different areas and intensities of the back. This dynamic support can better adapt to the back shape and sitting posture changes of different users than the traditional static support, and improve the accuracy and comfort of the support. In addition, the airbag member 100 can disperse the pressure borne by the back and reduce the discomfort caused by single-point pressure. By adjusting the inflation amount of the airbag, the distribution of the back pressure can be optimized, making the pressure more uniform and reducing the fatigue caused by sitting for a long time.

[0050] See Figures 1 to 2 As shown, in an embodiment, a lumbar support member 120 is further provided between the two back leaf support members 70.

[0051] Specifically, the lumbar support member 120 is an existing accessory, molded from a soft elastic material (such as polyurethane or EVA), and has two support surfaces with different thicknesses on the front and back. Among them, the lumbar support member 120 is slidably installed between the two back leaf support members 70 and can be used to support a small area of the user's back locally. That is to say, there are differences in the waist height and curve of different users. By adjusting the up and down position of the lumbar support member 120, it can be ensured that the lumbar support member 120 can accurately fit the user's waist curve and provide personalized lumbar support. In addition, accurate lumbar support can reduce the discomfort caused by lumbar suspension or excessive support, and improve the comfort of the user in a long-term sitting position. In addition, the presence and adjustability of the lumbar support member 120 help to disperse the pressure borne by the waist and reduce lumbar fatigue and pain caused by long-term sitting.

[0052] See Figures 1 to 2 As shown, in one embodiment, the chair back 40 is further provided with a headrest member 130.

[0053] Specifically, the headrest member 130 is an external accessory of the chair back, used to support the human head, and can provide up and down height and front and back distance adjustment support functions to achieve the best comfort experience. Among them, the headrest member 130 is a market-available four-way adjustable car headrest accessory.

[0054] Among them, the chair back 40 is shaped by an internal metal hardware skeleton and the sponge and wood board wrapped on the outside. It has a certain arc shape in the left and right directions, and the outside is wrapped with a cover made of leather or fabric. In addition, the seat 30 has a certain curved surface shape, is composed of wood board and sponge inside, and is wrapped with a layer of leather or fabric cloth cover outside, which is an existing technology in the market. In addition, the chassis 10 adopts existing public technologies, including but not limited to chair legs, gas springs, casters, etc. Among them, the chassis 10 is installed below the fixed plate 22, the rear side of the chassis 10 is connected to the corner code at the lower part of the chair back 40, and operating handles are respectively provided on the left and right sides of the chassis 10. The handle provided on the left is used to adjust the reclining angle of the chair back 40, and the handle provided on the right is used to control the raising or lowering of the seat 30.

[0055] Specifically, the included angle between the support surface of the back leaf support member 70 and the seat surface of the seat 30 is initially maintained at 96° by default. This angle can effectively reduce the pressure of the upper body on the lumbar spine and keep the human body in a normal sitting posture for work and study. The chassis 10 has a reclining angle adjustment function, and can adjust the chair back 40 to recline backward to the maximum angle of 36°, and there is an 18° inclination angle gear in the middle area. When the chair back 40 is in the reclined state, the human body can be in a lying posture for rest.

[0056] In summary, the ergonomic chair of the present utility model enhances the adaptability and comfort, expands the matching adjustability of the supporting parts such as the headrest and backrest of the chair for different heights and body types, and combines with the inclined reclining seat surface support to effectively relieve the compressive force on the human leg muscles. Then, combined with the installed adjustable footrest for leg placement function, it minimizes the pressure on the waist and back of the body when the human body is in a resting and lying position. The product has good practical value and market economic benefits.

[0057] The above embodiments are the preferred implementation schemes of the present utility model. In addition, the present utility model can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present utility model.

Claims

1. An ergonomic chair, characterized in that, Comprising: A chassis, a plate frame assembly, a seat and a backrest. The plate frame assembly and the backrest are connected to the chassis, the seat is connected to the plate frame assembly, and the plate frame assembly is arranged in an upwardly inclined manner so that the seat is in an upwardly inclined state.

2. The ergonomic chair according to claim 1, wherein The plate frame assembly includes a front cross plate, a fixing plate and a vertical pipe. The fixing plate is provided with a bent plate that is upwardly inclined. One end of the vertical pipe is connected to the front cross plate, and the other end is connected to the bent plate. The seat is connected to the vertical pipe, and the fixing plate is connected to the chassis.

3. The ergonomic chair according to claim 2, characterized in that, Armrests are further provided on both sides of the seat. An armrest flank is connected to the side of the vertical pipe, and the armrest is connected to the armrest flank.

4. The ergonomic chair according to claim 2, characterized in that, A pedal assembly is further connected below the front cross plate. The pedal assembly includes a mounting seat, a sliding rod and a footrest. The mounting seat is connected to the front cross plate, the sliding rod is slidably connected to the mounting seat, and the footrest is rotatably connected to the sliding rod.

5. The ergonomic chair according to claim 1, wherein The backrest is further provided with left and right symmetric back leaf support members.

6. The ergonomic chair according to claim 5, characterized in that, The back leaf support member is provided with a plurality of ventilation holes, and massage fittings are installed in some of the ventilation holes.

7. The ergonomic chair according to claim 5, characterized in that, The back leaf support member is connected to the backrest through an elastic connecting member.

8. The ergonomic chair according to claim 7, wherein An airbag member is further provided on the back of the backrest where the back leaf support member is located, and the airbag member is connected to an inflation adjusting member.

9. The ergonomic chair according to claim 7, wherein A lumbar support member is further provided between the two back leaf support members.

10. The ergonomic chair according to claim 1, characterized in that, The backrest is further provided with a headrest member.

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