Ergonomic seat

Abstract

The ergonomic seat comprises a waist rest body and a backrest assembly, the waist rest body comprises a vertically-arranged sliding part and a waist supporting part extending in an arc shape, and the sliding part is slidably connected to the backrest assembly in the vertical direction, so that the waist rest body can slide relative to the backrest assembly to adjust the height; the lower end of the waist supporting part is connected to the lower end of the sliding part, and the waist supporting part is obliquely arranged towards the upper front direction relative to the sliding part, so that when the waist supporting part is subjected to leaning force, the upper half part of the waist supporting part generates elastic deformation towards the lower rear direction, and the waist supporting part has the tendency of resetting towards the upper front direction. According to the ergonomic seat provided by the invention, the lower end of the waist supporting part is connected with the sliding part, and the waist supporting part is obliquely arranged towards the front upper part, so that the upper half part of the waist supporting part is easy to generate elastic deformation when being leaned by a user, and a reset elastic force towards the front upper part is applied to the waist of the user, so that the use experience is more comfortable; and moreover, the lumbar curvature of a human body is fit better, and ergonomics is met.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, specifically to ergonomic chairs. Background Technology

[0002] Chairs are widely used pieces of furniture in daily life, typically consisting of a base, backrest, and armrests. When using a chair, users usually rely on the base and backrest to support their hips and back, while lumbar support is relatively weak. Prolonged sitting can easily lead to lumbar muscle strain and a series of lumbar spine diseases. To provide lumbar support, existing chairs usually include lumbar supports on the backrest. Furthermore, to accommodate users of different body types and sitting postures, existing lumbar supports are usually adjustable in height and angle.

[0003] For example, an existing technology provides a lumbar support adjustment structure for office chairs (application number: CN202123197800.1), which includes a backrest frame and a lumbar support body located at the front of the backrest frame. A movable seat is rotatably connected to the backrest frame, and an adjustment seat is provided on the movable seat. One end of the adjustment seat is slidably mounted on the movable seat, and the other end is rotatably connected to the back of the lumbar support body. This allows the lumbar support body to be height-adjusted by sliding the adjustment seat and angle-adjusted by rotating the movable seat, making it convenient for users to adjust the lumbar support position according to actual needs, and it has good practicality.

[0004] However, the above solution has the following problems: when a user sits down, their lower back usually exerts downward and backward pressure on the protruding support part of the lumbar support. At that time, the adjustment seat of the above solution is connected to the upper part of the lumbar support body, that is, the upper part of the lumbar support body does not easily produce elastic deformation. As a result, when the user's lower back is supported by the protruding part on the upper side of the lumbar support body, the elastic deformation of the lumbar support body is small, which cannot provide the user's lower back with a soft and comfortable support force, resulting in a less comfortable user experience. Summary of the Invention

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide an ergonomic chair that, by connecting the lower end of the lumbar support and the sliding part, allows the upper part of the lumbar support to easily undergo elastic deformation when the user leans on it, and applies elastic support to the user's waist with the help of the restoring elastic force, making the user experience more comfortable; and the lumbar support is tilted forward and upward, so that it applies a restoring elastic force forward and upward when leaned on, which better conforms to the curvature of the human lumbar spine, helps the user to correct their sitting posture, and is in line with ergonomics.

[0006] The effect of this utility model is achieved as follows:

[0007] This application provides an ergonomic chair, including a lumbar support body and a backrest assembly. The lumbar support body includes a vertically arranged sliding part and an arc-shaped lumbar support part. The sliding part is slidably connected to the backrest assembly in a vertical direction, so that the lumbar support body can slide and adjust its height relative to the backrest assembly. The lower end of the lumbar support part is connected to the lower end of the sliding part, and the lumbar support part is inclined forward and upward relative to the sliding part, so that when the lumbar support part is subjected to a leaning force, the upper half of the lumbar support part undergoes elastic deformation backward and downward, thereby giving the lumbar support part a tendency to return to its original position forward and upward.

[0008] Furthermore, the lumbar support is tilted at an angle of 35-55° relative to the sliding part. This not only allows for sufficient deformation space between the upper part of the lumbar support and the backrest assembly, but also enables the upper part of the lumbar support to apply a restoring force forward and upward when it undergoes elastic deformation, making it more ergonomic and providing better support.

[0009] Furthermore, the lumbar support body is a one-piece molded structure, with the lower end of the lumbar support and the lower end of the sliding part converging into a single unit. This not only makes the overall strength and stability of the lumbar support body higher, but also allows the lumbar support body to be installed and removed together with the backrest assembly, making assembly and disassembly more convenient and facilitating packaging and transportation.

[0010] Furthermore, the lumbar support body and the backrest assembly are connected by a sliding assembly. The sliding assembly includes a vertically extending groove and an adjusting member. The groove is formed in one of the sliding part and the backrest assembly, and the adjusting member passes through the groove and is fixed to the other of the sliding part and the backrest assembly. This restricts the sliding direction and sliding distance of the lumbar support body, making the height adjustment operation of the lumbar support body more stable, and the structure is simple and the manufacturing cost is low.

[0011] Furthermore, the adjustment component is a knob bolt, with a vertically extending groove cut out of the sliding part. The adjustment component passes through the groove and is screwed to the backrest assembly, allowing the lumbar support body to be installed and removed from the backrest assembly along with the adjustment component. This not only simplifies the height adjustment of the lumbar support body but also makes its installation and removal easier. Moreover, by creating the groove in the sliding part, the handwheel of the adjustment component is also located on the front side of the sliding part, meaning the adjustment component is hidden inside the lumbar support body and not easily exposed. This results in a cleaner and more aesthetically pleasing appearance for the ergonomic chair.

[0012] Furthermore, a damping mechanism is provided between the sliding part and the backrest assembly. This damping mechanism is configured to apply resistance to both the sliding part and the backrest assembly, allowing the lumbar support body to be suspended at any adjustable height. This not only enhances the connection strength between the sliding part and the backrest assembly, resulting in better stability of the lumbar support body, but also further improves the ease of height adjustment.

[0013] Furthermore, the damping mechanism includes several first and second locking teeth. The first locking teeth are arranged vertically at the front end of the backrest assembly, and the rear end of the sliding part is correspondingly provided with several second locking teeth arranged vertically. When the sliding part slides relative to the backrest assembly, the second locking teeth engage with the first locking teeth in sequence. The engagement of the two sets of locking teeth provides damping for the height adjustment of the lumbar support body. This not only simplifies the structure but also effectively improves the connection strength between the sliding part and the backrest assembly, resulting in good stability.

[0014] Furthermore, the damping mechanism includes an elastic element, and a mounting groove is recessed on the backrest assembly or sliding part. The elastic element is installed in the mounting groove and always applies elastic force to the backrest assembly and sliding part. The damping effect is provided by the elastic force of the elastic element. The structure is simple and easy to install, and it provides a strong damping feel for the height adjustment of the lumbar support body, resulting in better stability.

[0015] The ergonomic chair provided in this application connects the lower end of the lumbar support to the sliding part, making the upper part of the lumbar support more prone to elastic deformation. The upper part of the lumbar support is curved forward and conforms to the user's waist. When the user leans on it, it undergoes elastic deformation and applies elastic support to the user's waist with the help of the restoring elastic force, making the user experience more comfortable. Furthermore, the lumbar support is tilted forward and upward, so that it applies a restoring elastic force forward and upward when leaned on, which better conforms to the curvature of the human lumbar spine and helps the user correct their sitting posture, which is ergonomic. In addition, the sliding part is slidably connected to the backrest assembly, so the height of the lumbar support body can be adjusted to accommodate users of different body types and sitting postures, which has good practicality. Attached Figure Description

[0016] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0017] Figure 1 A three-dimensional structural diagram of an ergonomic chair provided in an embodiment of this application;

[0018] Figure 2 A schematic diagram illustrating the process of elastic deformation of the lumbar support body when it is leaned against, as provided in the embodiments of this application.

[0019] Figure 3 This is a schematic diagram illustrating the process of sliding adjustment of the lumbar support body provided in this embodiment of the application.

[0020] Figure 4 A schematic diagram of the connection structure between the lumbar support body and the backrest assembly provided in an embodiment of this application;

[0021] Figure 5 This is a schematic diagram of the connection structure of the damping mechanism provided in the embodiments of this application;

[0022] Figure 6 A schematic diagram of the connection structure between the adjusting member, the sliding part, and the backrest assembly provided in the embodiments of this application;

[0023] Figure 7 A cross-sectional structural diagram of the seat when the damping mechanism provided in the embodiments of this application uses an elastic element;

[0024] Figure 8 This is a schematic diagram illustrating the change process of the backrest body relative to the back support as it slides, as provided in an embodiment of this application.

[0025] The attached figures are labeled as follows: 1-lumbar support body, 110-sliding part, 111-sliding groove, 112-second locking tooth, 113-mounting groove, 120-lumbar support part, 2-backrest assembly, 2a-backrest body, 2b-backrest bracket, 210-first locking tooth, 3-adjusting component, 4-elastic component. Detailed Implementation

[0026] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0027] Please refer to the attached document. Figure 1-8 This application provides an ergonomic chair, including a lumbar support body 1 and a backrest assembly 2. The lumbar support body 1 includes a vertically arranged sliding part 110 and an arc-shaped lumbar support part 120. The sliding part 110 is slidably connected to the backrest assembly 2 in a vertical direction, so that the lumbar support body 1 can slide and adjust its height relative to the backrest assembly 2. The lower end of the lumbar support part 120 is connected to the lower end of the sliding part 110, and the lumbar support part 120 is inclined forward and upward relative to the sliding part 110, so that when the lumbar support part 120 is subjected to a leaning force, the upper half of the lumbar support part 120 undergoes elastic deformation backward and downward, thereby giving the lumbar support part 120 a tendency to return to its original position forward and upward.

[0028] In this embodiment, by connecting the lower end of the lumbar support 120 to the sliding part 110, the upper part of the lumbar support 120 is more likely to undergo elastic deformation. The upper part of the lumbar support 120 is arc-shaped and protrudes forward to fit the user's waist. When the user leans on it, it undergoes elastic deformation and applies elastic support to the user's waist with the help of the restoring elastic force, making the user experience more comfortable. Furthermore, the lumbar support 120 is tilted forward and upward, so that when it is leaned on, it will apply a restoring elastic force forward and upward, which better conforms to the curvature of the human lumbar spine, helps the user correct their sitting posture, and is ergonomic. In addition, the sliding part 110 is slidably connected to the backrest assembly 2, so that the height of the lumbar support body 1 can be adjusted to adapt to users of different body types and sitting postures, which has good practicality.

[0029] Please refer to the appendix. Figure 8 The backrest assembly 2 includes a backrest body 2a and a backrest support 2b, with a sliding part 110 slidably connected to the front end of the backrest body 2a. The backrest body 2a can slide up and down relative to the backrest support 2b, allowing the ergonomic chair to further adjust the height of the lumbar support body 2a and the overall height of the chair by sliding the backrest body 2a, thus further improving practicality. The height adjustment between the backrest body 2a and the backrest support 2b is achieved through a common cyclic adjustment mechanism in the prior art, which will not be described in detail in this patent.

[0030] Please refer to the attached document. Figure 2 In some embodiments of this application, the lumbar support 120 is tilted at an angle of 35-55° relative to the sliding part 110. This not only leaves a gap between the upper part of the lumbar support 120 and the backrest assembly 2, providing sufficient deformation space for the lumbar support 120, but also allows the upper part of the lumbar support 120 to apply a restoring elastic force forward and upward when it undergoes elastic deformation. This means the user's waist feels a forward and upward supporting force, which is more ergonomic and provides better support.

[0031] Please refer to the attached document. Figure 4 In some embodiments of this application, the lumbar support body 1 is a one-piece molded structure, and the lower end of the lumbar support part 120 and the lower end of the sliding part 110 meet as a whole.

[0032] In this embodiment, by setting the lumbar support body 1 as an integrally molded structure, not only is the overall strength of the lumbar support body 1 higher and the stability better, but the lumbar support body 1 can also be installed and disassembled together with the backrest assembly 2, making the installation and disassembly operation more convenient and also facilitating packaging and transportation.

[0033] Please refer to the attached document. Figure 6 In some embodiments of this application, the lumbar support body 1 and the backrest assembly 2 are connected by a sliding assembly. The sliding assembly includes a slide groove 111 extending in a vertical direction and an adjusting member 3. The slide groove 111 is formed in one of the sliding part 110 and the backrest assembly 2, and the adjusting member 3 passes through the slide groove 111 and is fixed to the other of the sliding part 110 and the backrest assembly 2.

[0034] In this embodiment, when the height of the lumbar support body 1 is adjusted, the adjusting member 3 slides in the slide groove 111, thereby limiting the sliding direction and sliding distance of the lumbar support body 1, making the height adjustment operation of the lumbar support body 1 more stable, and the structure is simple and the manufacturing cost is low.

[0035] Please refer to the attached document. Figure 6In some embodiments of this application, the adjusting member 3 is a knob bolt, and the sliding part 110 is hollowed out to form a groove 111 extending in the vertical direction. The adjusting member 3 passes through the groove 111 and is screwed to the backrest assembly 2, so that the lumbar support body 1 can be installed and removed from the backrest assembly 2 together with the adjusting member 3.

[0036] In this embodiment, by using a knob bolt, simply tightening the adjusting member 3 presses the sliding part 110 against the backrest assembly 2 to fix the height of the lumbar support body 1; conversely, simply loosening the adjusting member 3 allows the sliding part 110 to slide back relative to the backrest assembly 2, thus readjusting the height of the lumbar support body 1, making the height adjustment operation of the lumbar support body 1 simpler. Furthermore, after unscrewing the adjusting member 3, the lumbar support body 1 can also be disassembled, making the installation and disassembly of the lumbar support body 1 relatively simple. Moreover, by creating the sliding groove 111 on the sliding part 110, the handwheel of the adjusting member 3 is also located on the front side of the sliding part 110, meaning the adjusting member 3 is hidden inside the lumbar support body 1 and not easily exposed, making the ergonomic chair more concise and aesthetically pleasing.

[0037] Please refer to the attached document. Figure 4-5 In some embodiments of this application, a damping mechanism is provided between the sliding part 110 and the backrest assembly 2. The damping mechanism is configured to apply resistance to the sliding part 110 and the backrest assembly 2, so that the lumbar support body 1 can be suspended at any adjustable height.

[0038] In this embodiment, by setting a damping mechanism, not only is the connection strength between the sliding part 110 and the backrest assembly 2 enhanced, resulting in better stability of the lumbar support body 1, but also, thanks to the damping effect of the damping mechanism, the lumbar support body 1 can be suspended at any adjustable height during adjustment. That is, when adjusting the height of the lumbar support body 1, the user does not need to hold the lumbar support body 1 at a fixed height with one hand and then tighten the adjusting piece 3 to fix the lumbar support body 1 to the backrest assembly 2 with the other. The user can freely pull the lumbar support body 1 to a suitable height and then tighten the adjusting piece 3 to fix the position of the lumbar support body 1. This further improves the ease of operation for adjusting the height of the lumbar support body 1.

[0039] Please refer to the attached document. Figure 4-5 In some embodiments of this application, the damping mechanism includes a plurality of first locking teeth 210 and second locking teeth 112. The plurality of first locking teeth 210 are arranged vertically at the front end of the backrest assembly 2, and the rear end of the sliding part 110 is correspondingly provided with a plurality of second locking teeth 112 arranged vertically. When the sliding part 110 slides relative to the backrest assembly 2, the second locking teeth 112 engage with the plurality of first locking teeth 210 in sequence.

[0040] In this embodiment, by providing a first locking tooth 210 and a second locking tooth 112 that mesh with each other between the sliding part 110 and the backrest assembly 2, the meshing of the two sets of locking teeth provides damping sensation for the height adjustment of the lumbar support body 1. This not only has a simple structure, but also effectively improves the connection strength between the sliding part 110 and the backrest assembly 2, resulting in better stability.

[0041] Please refer to the attached document. Figure 7 In some embodiments of this application, the damping mechanism may also adopt other structures, such as: the damping mechanism includes an elastic element 4, and the backrest assembly 2 or the sliding part 110 is recessed with a mounting groove 113, the elastic element 4 is installed in the mounting groove 113 and always applies elastic force to the backrest assembly 2 and the sliding part 110.

[0042] In this embodiment, an elastic element 4 is provided between the backrest assembly 2 and the sliding part 110. The elastic force of the elastic element 4 provides a damping effect. The structure is simple and easy to install, and it provides a strong damping feel for the height adjustment of the lumbar support body 1, resulting in better stability.

[0043] Preferably, the rear end of the sliding part 110 is recessed to form two mounting grooves 113, meaning that the sliding part 110 and the backrest assembly 2 are provided with a damping effect through two sets of elastic elements 4, resulting in better stability. The elastic elements 4 are made of rubber, which not only has good elasticity but also has a high coefficient of friction, further enhancing the damping feel. Of course, in other embodiments of this application, the elastic elements 4 can also be springs, foam, etc.

[0044] It should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used above to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means three or more.

[0045] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An ergonomic chair, characterized in that, The device includes a lumbar support body (1) and a backrest assembly (2). The lumbar support body (1) includes a vertically arranged sliding part (110) and an arc-shaped lumbar support part (120). The sliding part (110) is slidably connected to the backrest assembly (2) in the vertical direction, so that the lumbar support body (1) can slide and adjust its height relative to the backrest assembly (2). The lower end of the lumbar support part (120) is connected to the lower end of the sliding part (110), and the lumbar support part (120) is inclined forward and upward relative to the sliding part (110), so that when the lumbar support part (120) is subjected to a leaning force, the upper half of the lumbar support part (120) undergoes elastic deformation backward and downward, thereby giving the lumbar support part (120) a tendency to return to its original position forward and upward.

2. The ergonomic chair according to claim 1, characterized in that, The waist support (120) is tilted at an angle of 35-55° relative to the sliding part (110).

3. The ergonomic chair according to claim 1, characterized in that, The lumbar support body (1) is a one-piece molded structure, and the lower end of the lumbar support part (120) and the lower end of the sliding part (110) meet as a whole.

4. The ergonomic chair according to claim 1, characterized in that, The lumbar support body (1) and the backrest assembly (2) are connected by a sliding assembly. The sliding assembly includes a groove (111) extending in the vertical direction and an adjusting member (3). The groove (111) is formed in one of the sliding part (110) and the backrest assembly (2). The adjusting member (3) passes through the groove (111) and is fixed to the other of the sliding part (110) and the backrest assembly (2).

5. The ergonomic chair according to claim 4, characterized in that, The adjusting component (3) is a knob bolt. The sliding part (110) has a hollowed-out groove (111) extending in the vertical direction. The adjusting component (3) passes through the groove (111) and is screwed to the backrest assembly (2), so that the lumbar support body (1) can be installed and removed from the backrest assembly (2) together with the adjusting component (3).

6. The ergonomic chair according to claim 1, characterized in that, A damping mechanism is provided between the sliding part (110) and the backrest assembly (2). The damping mechanism is configured to apply resistance to the sliding part (110) and the backrest assembly (2), so that the lumbar support body (1) can be suspended at any adjustable height.

7. The ergonomic chair according to claim 6, characterized in that, The damping mechanism includes a plurality of first locking teeth (210) and second locking teeth (112). The plurality of first locking teeth (210) are arranged vertically at the front end of the backrest assembly (2). The rear end of the sliding part (110) is correspondingly provided with a plurality of second locking teeth (112) arranged vertically. When the sliding part (110) slides relative to the backrest assembly (2), the second locking teeth (112) engage with the plurality of first locking teeth (210) in sequence.

8. The ergonomic chair according to claim 6, characterized in that, The damping mechanism includes an elastic element (4), and a mounting groove (113) is recessed on the backrest assembly (2) or the sliding part (110). The elastic element (4) is installed in the mounting groove (113) and always applies elastic force to the backrest assembly (2) and the sliding part (110).

Images