Multi-dimensional posture correction ergonomic chair

Abstract

The utility model provides a multidimensional posture correction ergonomic chair, which comprises a chair seat assembly and a chair back assembly arranged on the chair seat assembly, the chair back assembly comprises a waist supporting piece for supporting the waist of a human body, and two end parts of the waist supporting piece can be close to each other to clamp the waist. The chair seat assembly comprises a hip wrapping piece and a supporting piece which is arranged on the hip wrapping piece and directly supports the hip, and the hip wrapping piece can sink inwards when the human body sits to wrap the hip of the human body together with the supporting legs so as to be matched with the waist supporting piece to keep the postures of the waist and the hip respectively; in a traditional seat, a user continuously twists the buttocks due to discomfort and fatigue after sitting for a long time, so that the human body is obviously inclined, and the sitting posture is seriously deformed, but the ergonomic chair disclosed by the utility model can lock the waist and the buttocks, so that the correct sitting posture is kept.

Description

Technical Field

[0001] The utility model relates to the field of furniture, in particular to a multi-dimensional posture-correcting ergonomic chair. Background Art

[0002] Chairs are one of the most common furniture in our daily life and work, and users spend a lot of time sitting on them. However, there is a common drawback in existing chairs, that is, fatigue and health risks caused by sitting for a long time; the reason is mainly due to the lack of support of the chair itself. Specifically, a chair generally has a seat for a human body to sit on. When a human body sits on the seat surface, the body weight is supported by the seat. According to the physiological structure of the human body, the human spine carries the upper body of the human body such as the head and back. Since the lumbar spine is at the lowest position of the spine, the load is quite large, and it is also the junction of the active segment and the fixed segment, it is more susceptible to injury. In other words, most of the weight of the human body will be concentrated on the waist and buttocks. The waist is supported by the waist support of the chair, and the buttocks are supported by the seat surface. When the support given by the waist support and the seat surface is insufficient, the human body will change its sitting posture due to fatigue from sitting, such as the buttocks moving on the seat surface, the waist will tilt or bend accordingly, the sitting posture is seriously deformed, and the lumbar spine is also in a bent state. This is not a good support state for the lumbar spine, and health problems will arise over time.

[0003] There is also a type of product on the market that can be placed on a seat to tighten the waist and buttocks, correct sitting posture and improve support. Despite this, external products are always not good enough in terms of integrity, comfort and support effect. Therefore, there is an urgent need for a chair that can improve hip and waist support and correct human sitting posture. Summary of the invention

[0004] In order to solve the above-mentioned technical problems, the utility model provides a multi-dimensional posture-correcting ergonomic chair, comprising a seat assembly and a back assembly arranged on the seat assembly, the back assembly comprising a lumbar support member for supporting the waist of a human body, the two ends of the lumbar support member can be close to each other to clamp the waist, the seat assembly comprises a hip wrap member and a support member arranged on the hip wrap member and directly supporting the buttocks, the hip wrap member can be sunken when the human body sits and wrap the human body's buttocks together with the supporting feet, thereby cooperating with the lumbar support member to maintain the posture of the waist and buttocks respectively; in traditional chairs, after sitting for a long time, the user twists the buttocks continuously due to discomfort and fatigue, which will obviously cause the human body to tilt and seriously deform the sitting posture, while the ergonomic chair of the utility model can lock the waist and buttocks, thereby maintaining the correct sitting posture.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A multi-dimensional posture-correcting ergonomic chair comprises a backrest assembly and a seat assembly, wherein the backrest assembly is arranged on the seat assembly; the backrest assembly comprises a lumbar support member for supporting the waist of a human body, wherein the two ends of the lumbar support member are arranged to be close to each other to clamp the waist of the human body; the seat assembly comprises a hip wrap member and a support member, wherein the support member is arranged on the hip wrap member, wherein the support member is arranged to directly support the buttocks of a human body, wherein the hip wrap member is arranged such that when a human body sits, the hip wrap member is sunken inwardly and wraps the buttocks of a human body together with the support member; when a human body sits, the lumbar support member and the hip wrap member can respectively maintain the postures of the waist and buttocks.

[0007] The hips and waist, which are the core support of the human body, are effectively supported by the ergonomic chair, which can effectively reduce or even eliminate the fatigue caused by sitting for a long time;

[0008] The lumbar support and the hip wrap work together to achieve multi-dimensional posture correction: the lumbar support can clamp the waist to achieve waist binding, keeping the waist in a more ergonomic posture, while the hip wrap can wrap the buttocks to stabilize the posture of the human buttocks. The waist and buttocks are adjacent and connected, and the two serve as the core support when the human body is sitting, and are corrected to an ergonomic sitting posture at the same time, thereby eliminating the health risks caused by long-term use of poor sitting posture.

[0009] Preferably, the chair back assembly further comprises a chair back frame, an adjustment unit and two armrest assemblies arranged on both sides of the adjustment unit, wherein the lumbar support is mounted on the adjustment unit, the adjustment unit is mounted on the chair back frame, and the two armrest assemblies are arranged on the adjustment unit to rotate around a vertical axis; the adjustment unit is configured to rotate the two armrest assemblies simultaneously and to keep the two armrest assemblies in the rotated position; when the ends of the two armrest assemblies away from the adjustment unit approach each other, the two armrest assemblies drive the two ends of the lumbar support to approach each other and clamp the waist of the human body. Under the action of the adjustment unit, the two armrest assemblies rotate simultaneously, and when the ends of the two armrest assemblies away from the adjustment unit approach each other, the two ends of the lumbar support are driven to approach each other to clamp the waist of the human body, which is very simple and convenient to operate and is convenient for users to adjust; because the two armrest assemblies are linked and rotate at the same angle, the two ends of the lumbar support are symmetrically gathered, so that the lumbar support can clamp the waist more correctly and more vertically, and the waist protection effect is strong.

[0010] Preferably, the waist support member is elastic. When the ends of the two armrest assemblies away from the adjustment unit approach each other and close and rotate, the armrest assemblies drive the waist support member to produce elastic deformation, and make the two ends of the waist support member approach each other to clamp the waist of the human body; when the ends of the two armrest assemblies away from the adjustment unit move away from each other and open and rotate, the waist support member restores the elastic deformation. The waist support member is opened and closed directly through the elasticity of the waist support member, which has a simple structure and lower cost.

[0011] Preferably, the lumbar support member and the two armrest assemblies are in abutment and sliding cooperation. When the two armrest assemblies are closed, the lumbar support member and the armrest assemblies slide relative to each other, and the armrest assemblies drive the two ends of the lumbar support member to move closer to each other. The lumbar support member and the armrest assemblies are not connected, but are in abutment and sliding cooperation. Under the premise of convenient and simple installation, the lumbar support member can also produce corresponding changes through the movement of the armrest assemblies, and there will be no interference between the two to hinder the movement.

[0012] Preferably, two mutually meshing gears are provided on the adjustment unit, the two armrest assemblies are linked by the two gears, the two armrest assemblies are provided with meshing teeth, and the meshing teeth on the two armrest assemblies are respectively meshed with the two gears. Through the plurality of gears, while realizing the linkage of the two armrest assemblies, the armrest assembly on one side can be rotated counterclockwise while the armrest assembly on the other side can be rotated clockwise, thereby realizing the opening and closing movement of the two armrest assemblies; and the size of the gears is smaller, making the structure more compact.

[0013] Preferably, two left-right symmetrical sliders are provided on the adjustment unit, the two sliders are located between the two armrest assemblies and both sliders can slide on the adjustment unit in the left-right direction, and a spring is provided between the two sliders; a plurality of ratchets are provided on the armrest assembly, and the slider includes a locking tooth meshed with the ratchets, and the ratchets and the locking teeth are one-way self-locking; when the two armrest assemblies are closed and rotated, the locking teeth are meshed with different ratchets; when the two armrest assemblies have a tendency to open and rotate, the ratchets and the locking teeth are self-locking. The one-way self-locking of the ratchets and the locking teeth can achieve the effect of keeping the armrest assembly in the current position after rotation, thereby realizing the function of the gear position; the spring allows the two sliders to slide and reset, and when the armrest assemblies are closed and rotated, the two sliders slide close to each other, allowing the locking teeth to switch between different ratchets; it is also possible to have multiple locking teeth, thereby increasing the stability when the locking teeth are meshed with the ratchets.

[0014] Preferably, the armrest assembly is provided with a coaxially rotating self-circulating part, the self-circulating part is provided with an arc-shaped waist hole, and the armrest assembly is provided with a convex shaft inserted in the arc-shaped waist hole, and when the armrest assembly rotates, the convex shaft moves in the arc-shaped waist hole; the arc-shaped waist hole has a front end and a rear end, and the self-circulating part is configured so that when the two armrest assemblies are fully opened, the convex shaft is located at the front end of the arc-shaped waist hole, and when the two armrest assemblies are closed, the convex shaft moves from the front end to the rear end of the arc-shaped waist hole; after the convex shaft abuts against the rear end of the arc-shaped waist hole, the two armrest assemblies continue to close, and the convex shaft drives the self-circulating part to rotate, and the two self-circulating parts push the two sliders close to each other and disengage the ratchet and the locking tooth, so that the two armrest assemblies can be opened and reset; the self-circulating part is provided with an anti-slip boss, and the anti-slip boss is configured so that after the two self-circulating parts push the two sliders close to each other, the anti-slip boss abuts against the slider, so as to prevent the self-circulating part from disengaging from the slider and causing the ratchet and the locking tooth to engage during the return process of the armrest assembly. The self-circulating part is driven by the rotation of the armrest assembly. When the armrest assembly is closed and rotated to the final gear, the convex shaft is located at the rear end of the arc-shaped waist hole. The armrest assembly continues to be closed and rotated, and the convex shaft of the armrest assembly can drive the self-circulating part to rotate and allow the self-circulating part to abut against the slider, so that the locking teeth and ratchet teeth on the slider are always kept disengaged. At this time, the armrest assembly can be opened and rotated. After the convex shaft returns to the front end of the arc-shaped waist hole and continues to rotate, the slider can be unlocked. The slider is reset under the action of the spring, so that the locking teeth and ratchet teeth are engaged again; after the self-circulating part pushes the slider, the anti-slip boss abuts against the side of the slider. The purpose of the anti-slip boss is to prevent the self-circulating part from rotating prematurely and unlocking the slider, thereby ensuring that the self-circulating part and the slider can be unlocked and the locking teeth and ratchet teeth are re-engaged only after the armrest assembly is opened and rotated and completely reset.

[0015] Preferably, the seat assembly further comprises a seat frame, the hip wrap is mounted on the seat frame, a convex shaft protruding downward and arranged horizontally is provided below the hip wrap, and the convex shaft is rotatably arranged on the seat frame; the hip wrap comprises a deformation part, the deformation part is elastic, and the deformation part and the convex shaft are configured so that when the user sits on the seat assembly, the deformation part is deformed, and at the same time the convex shaft rotates relative to the seat frame, and the hip wrap is sunken to wrap the buttocks of the human body. The convex shaft below the hip wrap is mounted on the seat frame, and the convex shaft can rotate on the seat frame. The convex shaft cooperates with the deformation part on the hip wrap, so that the hip wrap forms a depression when the human body sits, so that the seat assembly can achieve a hip wrap effect; the convex shaft can also serve as the main support of the deformation part, preventing the deformation part from producing exaggerated deformation and affecting comfort, and preventing the hip wrap from being damaged due to excessive deformation.

[0016] Preferably, the hip wrap includes two deformation parts, which are symmetrically distributed on the hip wrap, and the convex rotation axis is located below the deformation parts and the convex rotation axis is provided below the two deformation parts, and the convex rotation axis is arranged along the front-back direction; the seat frame is provided with a rotation groove, and the convex rotation axis is rotatably arranged in the rotation groove. When sitting, the most obvious deformation is the buttocks expanding outward to the left and right. The deformation parts are symmetrically distributed on the left and right, and can mainly provide left and right sides to wrap the buttocks when they are sunken, thereby constricting the buttocks and preventing the buttocks from expanding outward in the left and right directions.

[0017] As a preferred embodiment, the hip wrap is provided with a plurality of hollows, which are arranged around the deformation part; a plurality of connecting pieces are arranged at the hollows, and the connecting pieces are all convex and curved downward. The hollows provide favorable conditions for the deformation of the deformation part; a support surface for supporting the buttocks of the human body is formed on the seat assembly. Due to the deformation ability of the seat assembly, when the human body sits, the support surface will also be concave and deformed downward, and the area of ​​the entire support surface will increase, and the hollows will expand. At this time, the connecting pieces are more needed to improve the strength of the hip wrap.

[0018] The design starting point, concept and beneficial effects of the utility model using the above technical solution are:

[0019] The buttocks and waist, which serve as the core support of the human body, are effectively supported by the ergonomic chair, which can effectively reduce or even eliminate the fatigue caused by sitting for a long time; the lumbar support and the hip wrap cooperate with each other to achieve multi-dimensional posture correction: the lumbar support can clamp the waist to achieve waist restraint, keeping the waist in a more ergonomic posture, while the hip wrap can wrap the buttocks to stabilize the posture of the human buttocks. The waist and buttocks are adjacent and connected, and the two serve as the core support of the human body when sitting, and are corrected to an ergonomic sitting posture at the same time, thereby eliminating the health risks caused by long-term use of an improper sitting posture. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The three-dimensional structure of the chair back device in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0021] Figure 2 The three-dimensional structure of the chair back device in the embodiment of the utility model is shown in FIG. Figure 2 ;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the waist support member abutting against the armrest assembly in the embodiment of the utility model;

[0023] Figure 4 An exploded view of the handrail assembly in the embodiment of the utility model;

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of the handrail assembly in the embodiment of the utility model;

[0025] Figure 6 This is a schematic diagram of the three-dimensional structure of the armrest assembly in the embodiment of the present utility model arranged on the adjustment unit;

[0026] Figure 7 This is a schematic diagram of the three-dimensional structure of the base in the embodiment of the utility model;

[0027] Figure 8 It is a front view of the base in the embodiment of the utility model;

[0028] Fig. 9 This is a schematic diagram of a three-dimensional structure in which a linkage mechanism and a locking mechanism are arranged on a base in an embodiment of the utility model;

[0029] Fig.10 It is a three-dimensional structural schematic diagram of the meshing teeth on the linkage part and the gear in the embodiment of the utility model;

[0030] Fig.11 The three-dimensional structure diagram of the utility model in which the ratchet teeth on the gear part are meshed with the locking teeth of the slider and the convex shaft is located at the front end of the arc waist hole Figure 1 ;

[0031] Fig.12 The three-dimensional structure diagram of the utility model in which the ratchet teeth on the gear part are meshed with the locking teeth of the slider and the convex shaft is located at the front end of the arc waist hole Figure 2 ;

[0032] Fig.13 The three-dimensional structure diagram of the utility model is that after the armrest assembly is closed and rotated in the embodiment, the ratchet teeth on the gear part are engaged with the locking teeth of the slider and the convex shaft is located at the rear end of the arc waist hole Figure 1 ;

[0033] Fig.14 The three-dimensional structure diagram of the utility model is that after the armrest assembly is closed and rotated in the embodiment, the ratchet teeth on the gear part are engaged with the locking teeth of the slider and the convex shaft is located at the rear end of the arc waist hole Figure 2 ;

[0034] Fig.15 The three-dimensional structure diagram of the self-circulating member pushing the slider to disengage the ratchet and the locking tooth in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0035] Fig.16 The three-dimensional structure diagram of the self-circulating member pushing the slider to disengage the ratchet and the locking tooth in the embodiment of the utility model is shown in FIG. Figure 2 ;

[0036] Fig.17 A bottom view of the embodiment of the utility model in which the self-circulating member pushes the slider to disengage the ratchet teeth from the locking teeth;

[0037] Fig.18 In the embodiment of the utility model, when the ratchet and the locking tooth are disengaged, the angle between the two functional parts on the base is Figure 6 Smaller;

[0038] Fig.19 It is a three-dimensional structural schematic diagram of the functional parts in the embodiment of the utility model;

[0039] Fig. 20 It is a three-dimensional structural schematic diagram of the self-circulating member in the embodiment of the utility model;

[0040] Fig.21 An exploded view of a lumbar support member in an embodiment of the present utility model;

[0041] Fig. 22 It is a front view of the back plate in the embodiment of the utility model;

[0042] Fig.23 This is a schematic diagram of the three-dimensional structure of the backing plate in the embodiment of the utility model;

[0043] Fig.24 It is a schematic diagram of the deformation of the lumbar support member under the action of the armrest assembly in the embodiment of the utility model;

[0044] Fig.25 It is a schematic diagram of the deformation of the lumbar support member under the action of the armrest assembly in the embodiment of the utility model;

[0045] Fig.26 It is a three-dimensional structural schematic diagram of the seat assembly in the embodiment of the utility model;

[0046] Fig. 27 An exploded view of the seat assembly in an embodiment of the utility model;

[0047] Fig.28 The three-dimensional structure of the hip wrapping member in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0048] Fig.29 It is a top view of the hip wrapping member in the embodiment of the utility model;

[0049] Fig.30 The three-dimensional structure of the hip wrapping member in the embodiment of the utility model is shown in FIG. Figure 2 ;

[0050] Fig.31 It is a three-dimensional structural schematic diagram of the seat frame in the embodiment of the utility model.

[0051] The reference numerals of the figures are as follows: a seat back frame 1; an adjustment unit 2; a lumbar support member 3; a backrest 31; a lumbar cushion 32; an armrest assembly 4; a main body 5; a functional member 6; a connecting portion 61; a rotating portion 62; a convex seat 7; a head 71; a base 8; a rotating accommodation space 9; a sliding accommodation space 10; a linkage accommodation space 11; a first rotating shaft 12; a shift portion 13; a ratchet 131; a linkage portion 14; a meshing tooth 141; a gear 15; a second rotating shaft 16; a slider 17 ; Locking tooth 171; Spring 18; Self-circulating part 19; Arc waist hole 191; Front end 1911; Rear end 1912; Anti-slip boss 192; Avoidance groove 20; Protruding shaft 21; Waist plate hollow 22; Groove 23; Seat frame 24; Hip-wrapping part 25; Convex rotating shaft 26; Deformation part 27; Seat cushion 28; Rotating groove 29; Support plate 30; U-shaped hollow 33; Horizontal hollow 34; Partition hollow 341; Longitudinal hollow 35; Connecting plate 36. DETAILED DESCRIPTION

[0052] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0053] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0054] In the description of the present invention, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0055] The specific implementation of the utility model is as follows:

[0056] like Fig.24 , 25 As shown in , 27, the utility model provides a multi-dimensional posture-correcting ergonomic chair, including a backrest assembly and a seat assembly, wherein the backrest assembly is arranged on the seat assembly; the backrest assembly includes a lumbar support member 3 for supporting the waist of a human body, and the lumbar support member 3 is configured so that the two ends of the lumbar support member 3 are close to each other to clamp the waist of the human body; the seat assembly includes a hip wrap member 25 and a support member, and the support member is arranged on the hip wrap member 25, and the support member is configured to directly support the buttocks of a human body, and the hip wrap member 25 is configured so that when a human body sits, the hip wrap member 25 is sunken and wraps the buttocks of a human body together with the support member; when a human body sits, the lumbar support member 3 and the hip wrap member 25 can respectively maintain the postures of the waist and buttocks.

[0057] The hips and waist, which are the core support of the human body, are effectively supported by the ergonomic chair, which can effectively reduce or even eliminate the fatigue caused by sitting for a long time;

[0058] The lumbar support 3 and the hip wrap 25 cooperate with each other to lock the waist and buttocks, thereby maintaining a correct sitting posture and achieving multi-dimensional posture correction: the lumbar support 3 can clamp the waist to achieve waist binding, keeping the waist in a more ergonomic posture, while the hip wrap 25 can wrap the buttocks to stabilize the posture of the human buttocks. The waist and buttocks are adjacent and connected, and the two serve as the core support when the human body is sitting, and are corrected to an ergonomic sitting posture at the same time, thereby eliminating the health risks caused by long-term use of an improper sitting posture.

[0059] Specifically, if Figure 1-3 As shown in 24-27, the chair back assembly also includes a chair back frame 1, an adjustment unit 2 and two armrest assemblies 4 arranged on both sides of the adjustment unit 2, the lumbar support member 3 is installed on the adjustment unit 2, the adjustment unit 2 is installed on the chair back frame 1, and the two armrest assemblies 4 are rotatably arranged on the adjustment unit 2 around a vertical axis; the chair seat assembly also includes a seat frame 24, a hip wrap 25 is installed on the seat frame 24, the seat frame 24 is connected to a chassis, and the chair back frame 1 is also connected to the chassis; the lumbar support member 3 is located between the two armrest assemblies 4 and the two ends of the lumbar support member 3 are close to the two armrest assemblies 4, the lumbar support member 3 and the two armrest assemblies 4 are in abutment and sliding cooperation, the adjustment unit 2 is configured to rotate the two armrest assemblies 4 at the same time, and can keep the two armrest assemblies 4 in the rotated position; when the two armrest assemblies 4 approach each other at one end away from the adjustment unit 2, the two armrest assemblies 4 drive the two ends of the lumbar support member 3 to approach each other and clamp the human waist.

[0060] The chair back assembly can, on the one hand, provide variable support and a wrapping feeling for the waist, so that the waist support part 3 can more effectively support the human waist and improve comfort; on the other hand, it can correct the sitting posture, enhance the supporting effect of the waist support part 3 on the human lumbar vertebrae, reduce the pressure on the waist and spine, and make people not tired after sitting for a long time; under the action of the adjustment unit 2, the two armrest assemblies 4 rotate synchronously in different directions, so as to realize the synchronous opening and closing movement of the two armrest assemblies 4, and the armrest assemblies 4 slide against the waist support part 3, so as to further realize the opening and closing movement of the armrest assemblies 4 and drive the opening and closing movement of the waist support part 3, which is very simple and convenient to operate and is conducive to adjustment by users; because the two armrest assemblies 4 are linked, the rotation directions are different but the rotation angles are the same, so as to realize the symmetrical opening and closing movement of the two ends of the waist support part 3, so that the waist support part 3 can clamp the waist more correctly and vertically, and the waist protection effect is strong.

[0061] like Figure 3-5As shown, the lumbar support member 3 slides against the armrest assembly 4 and the lumbar support member 3 is elastic. When the ends of the two armrest assemblies 4 away from the adjustment unit 2 move closer to each other and close and rotate, the lumbar support member 3 and the armrest assembly 4 slide relative to each other, and the armrest assembly 4 drives the lumbar support member 3 to produce elastic deformation, and makes the two ends of the lumbar support member 3 move closer to each other to clamp the human body's waist; when the ends of the two armrest assemblies 4 away from the adjustment unit 2 move away from each other and open and rotate, the lumbar support member 3 and the armrest assembly 4 also slide relative to each other, and the lumbar support member 3 restores the elastic deformation. Specifically, the lumbar support member 3 is mounted on the adjustment unit 2 and is located in front of the adjustment unit 2. The two armrest assemblies 4 extend outward from the adjustment unit 2 and bend forward at the same time. Therefore, in the left and right directions, the adjustment unit 2 and the two armrest assemblies 4 have a convex curvature as a whole, and the lumbar support member 3 generally also has a convex curvature as a whole. The adjustment unit 2 and the two armrest assemblies 4 are adapted to the lumbar support member 3 as a whole; the armrest assembly 4 includes a main body 5 and a functional part 6, the main body 5 is fixedly connected to the functional part 6, the main body 5 of the armrest assembly 4 is abutted against the lumbar support member 3 through a convex seat 7 with a rounded head 71, the convex seat 7 is approximately a triangular prism, and one of the edges of the head 71 is rounded and becomes rounded; in this embodiment, the convex seat 7 is arranged on the lumbar support member 3, and the convex seat 7 protrudes from the lumbar support member 3 and the head 71 of the convex seat 7 faces the armrest assembly 4, the main body 5 of the armrest assembly 4 is abutted against the head 71 of the convex seat 7, and the rounded head 71 of the convex seat 7 can reduce the friction during abutment and sliding.

[0062] In this solution, the opening and closing of the lumbar support member 3 is achieved directly through the elasticity of the lumbar support member 3, which has a simple structure and lower cost; specifically, the lumbar support member 3 includes a backrest plate 31 and a lumbar cushion 32 covered on the backrest plate 31, and the backrest plate 31 is an elastic plastic member; the protrusion 7 is arranged on the backrest plate 31; the cushion of the lumbar support member 3 increases the comfort, and the elastic backrest plate 31 can be deformed with the opening and closing of the armrest assembly 4; a plurality of vertical lumbar hollows 22 and a plurality of grooves 23 are opened on the backrest plate 31, and the deformation capacity of the backrest plate 31 is increased by arranging the lumbar hollows 22 and the grooves 23 on the backrest plate 31.

[0063] like Figure 5-9As shown, the adjustment unit 2 includes a base 8, which is lifted and lowered on the chair back frame 1. The base 8 has a plurality of accommodating spaces, including a rotating accommodating space 9, a sliding accommodating space 10, and a linkage accommodating space 11. There are two rotating accommodating spaces 9, which are symmetrically arranged on the base 8 and located at the left and right ends of the base 8. The functional part 6 of the armrest assembly 4 includes a connecting portion 61 and a rotating portion 62. The connecting portion 61 and the rotating portion 62 are integrally formed, and the connecting portion 61 and the main body of the armrest assembly 4 are connected. 5 is fixedly connected, the rotating part 62 is arranged in the rotating accommodation space 9, the rotating part 62 is roughly semi-cylindrical, and the side surface thereof located in the rotating accommodation space 9 is a circular arc surface. Correspondingly, the wall of the rotating accommodation space 9 is a circular arc surface. The rotating part 62 is provided with a first rotating shaft 12 connected to the base 8 at the central axis of the circular arc surface. The armrest assembly 4 is rotatably connected to the base 8 through the rotating part 62 and the first rotating shaft 12; the base 8 is provided with a linkage mechanism in the linkage accommodation space 11, and the base 8 is in the sliding accommodation space 1 0 is provided with a locking mechanism, the linkage mechanism and the locking mechanism are arranged at intervals on the base 8, and correspondingly, the functional part 6 of the armrest assembly 4 is provided with a shift portion 13 on the side of the rotating part 62 facing the sliding accommodating space 10, and the functional part 6 of the armrest assembly 4 is provided with a linkage portion 14 on the side of the rotating part 62 facing the linkage accommodating space 11, and the linkage portion 14 and the shift portion 13 are arranged at intervals on the armrest assembly 4. Such an arrangement can make the overall structure simpler and more compact; in this embodiment, the linkage portion 14 is located above the shift portion 13, and the linkage accommodating space 11 is located above the sliding accommodating space 10 and the two are separated; the functional part 6 is rotatably connected to the base 8, and the linkage portion 14 and the shift portion 13 are both arranged on the functional part 6. Directly arranging the linkage portion 14 and the shift portion 13 on the main body 5 of the armrest assembly 4 will make the overall structure of the main body 5 very complicated, and the mold opening and manufacturing costs are too high. After the armrest assembly 4 is divided into the main body 5 and the functional part 6, the structure of the main body 5 is simple, and the volume of the functional part 6 is smaller, thereby reducing the mold opening and manufacturing costs.

[0064] like Figure 6 , 9As shown in Figures 10, the linkage part 14 on the armrest assembly 4 is connected to the linkage mechanism on the base 8 in a transmission manner. The linkage part 14 and the linkage mechanism are configured so that when the armrest assembly 4 on one side rotates, the linkage part 14 is transmitted to the linkage part 14 of the armrest assembly 4 on the other side through the linkage mechanism and drives the armrest assembly 4 on the other side to rotate. The linkage part 14 on the armrest assembly 4 cooperates with the linkage mechanism in the adjustment unit 2 to realize the synchronous opening and closing linkage of the armrest assemblies 4 on both sides; specifically, the linkage mechanism includes two gears 15, which are meshed and arranged laterally in the linkage accommodating space 11 of the base 8. The linkage accommodating space 11 is horizontally connected with the rotating accommodating spaces 9 on both sides, and the two gears 15 are rotatably connected to the base 8 through a vertical second rotating shaft 16; the linkage part 14 includes a plurality of meshing teeth 141, and the meshing teeth 141 on the two armrest assemblies 4 are respectively meshed with the two gears 15; through the plurality of gears 15, while realizing the linkage of the two armrest assemblies 4, the armrest assembly 4 on one side can be rotated counterclockwise and the armrest assembly 4 on the other side can be rotated clockwise, thereby realizing the opening and closing movement of the two armrest assemblies 4; and the size of the gear 15 is smaller, making the structure more compact.

[0065] like Figure 11-20 As shown, the shift portion 13 on the armrest assembly 4 cooperates with the locking mechanism on the base 8, and the shift portion 13 and the locking mechanism are configured to maintain the current position of the armrest assembly 4 after rotation, and the shift portion 13 and the locking mechanism allow the rotation of the armrest assembly 4 to have multiple gears, so that the armrest assembly 4 can stay in the current position after rotation; specifically, the shift portion 13 includes a plurality of ratchets 131 arranged toward the sliding accommodating space 10; the locking mechanism includes two sliders 17 symmetrically arranged on the base 8 and a spring 18 arranged between the two sliders 17, the two sliders 17 are slidably arranged in the sliding accommodating space 10 of the base 8, and the sliding accommodating space 10 is horizontally connected with the rotating accommodating space 9 on both sides; the slider 17 includes a locking tooth 171 meshing with the ratchet 131, and the ratchet 131 and the locking tooth 171 are one-way self-locking; the locking The tooth 171 is located at one end of the slider 17 facing the armrest assembly 4, and the spring 18 is inserted in the other end of the slider 17; there are multiple locking teeth 171, and when the two armrest assemblies 4 are closed and rotated, the locking teeth 171 engage with different ratchet teeth 131 and switch between different ratchet teeth 131; when the two armrest assemblies 4 have a tendency to open and rotate, the ratchet teeth 131 and the locking teeth 171 are self-locking; the one-way self-locking of the ratchet teeth 131 and the locking teeth 171 can achieve the effect of keeping the armrest assembly 4 in the current position after rotation, thereby realizing the function of the gear position; the spring 18 allows the two sliders 17 to slide and reset, and when the armrest assemblies 4 are closed and rotated, the two sliders 17 slide close to each other, allowing the locking teeth 171 to switch between different ratchet teeth 131; a plurality of locking teeth 171 can increase the stability when the locking teeth 171 are engaged with the ratchet teeth 131.

[0066] A coaxially rotating self-circulating part 19 is provided on the armrest assembly 4. Specifically, an avoidance groove 20 is provided on the rotating part 62. The self-circulating part 19 is arranged in the avoidance groove 20, and the self-circulating part 19 is arranged on the first rotating shaft 12. The self-circulating part 19 can rotate around the first rotating shaft 12 relative to the base 8; further, an arc-shaped waist hole 191 is provided on the self-circulating part 19, and the arc-shaped waist hole 191 is arranged at the end of the self-circulating part 19 away from the first rotating shaft 12. A convex shaft 21 inserted in the arc-shaped waist hole 191 is provided on the armrest assembly 4. When the armrest assembly 4 rotates, the convex shaft 21 moves in the arc-shaped waist hole 191; specifically, the convex shaft 21 is arranged on the rotating part 62, and the convex shaft 21 is arranged on the groove wall of the avoidance groove 20 and the convex shaft 21 protrudes downward from the groove wall of the avoidance groove 20.

[0067] like Fig. 20 As shown, the arc-shaped waist hole 191 has a front end 1911 and a rear end 1912, and the self-circulating member 19 is configured such that when the two armrest assemblies 4 are fully opened, the convex shaft 21 is located at the front end 1911 of the arc-shaped waist hole 191, and when the two armrest assemblies 4 are closed, the convex shaft 21 moves from the front end 1911 of the arc-shaped waist hole 191 to the rear end 1912; after the convex shaft 21 abuts against the rear end 1912 of the arc-shaped waist hole 191, the two armrest assemblies 4 continue to close, and the convex shaft 21 drives the self-circulating member 19 to rotate, and the two self-circulating members 19 push the two sliders 17 to approach each other and disengage the ratchet 131 from the locking tooth 171, so that the two armrest assemblies 4 can be opened and reset; in other words, the self-circulating member 19 Component 19 is driven by the rotation of the armrest assembly 4. When the armrest assembly 4 is closed and rotated to the final gear position, the convex shaft 21 is located at the rear end 1912 of the arc-shaped waist hole 191. The armrest assembly 4 continues to be closed and rotated, and the convex shaft 21 of the armrest assembly 4 can drive the self-circulating component 19 to rotate, and let the self-circulating component 19 rest against the slider 17, so that the locking tooth 171 on the slider 17 and the ratchet tooth 131 always remain disengaged. At this time, the armrest assembly 4 can be opened and rotated. After the convex shaft 21 returns to the front end 1911 of the arc-shaped waist hole 191, it continues to rotate to unlock the slider 17. The slider 17 is reset under the action of the spring 18, so that the locking tooth 171 and the ratchet tooth 131 re-engage.

[0068] Furthermore, an anti-slip boss 192 is provided on the self-circulating part 19, and the anti-slip boss 192 is configured to abut against the slider 17 after the two self-circulating parts 19 push the two sliders 17 closer to each other, thereby preventing the self-circulating part 19 and the slider 17 from disengaging during the return process of the armrest assembly 4 and causing the ratchet 131 to engage with the locking tooth 171; after the self-circulating part 19 pushes the slider 17, the anti-slip boss 192 abuts against the side of the slider 17. The purpose of the anti-slip boss 192 is to prevent the self-circulating part 19 from rotating prematurely and unlocking the slider 17, thereby ensuring that the self-circulating part 19 and the slider 17 can be unlocked and the locking tooth 171 can be re-engaged with the ratchet 131 after the armrest assembly 4 is opened, rotated and completely reset.

[0069] A convex shaft 26 that protrudes downward and is arranged horizontally is provided below the hip-wrapping component 25, and the convex shaft 26 is rotatably set on the seat frame 24; the hip-wrapping component 25 includes a deformation part 27, and the deformation part 27 is elastic. The deformation part 27 and the convex shaft 26 are configured so that when the user sits on the seat assembly, the deformation part 27 is deformed, and at the same time the convex shaft 26 rotates relative to the seat frame 24, and the hip-wrapping component 25 is sunken to wrap the buttocks of the human body.

[0070] The convex rotating shaft 26 below the hip wrap 25 is installed on the seat frame 24, and the convex rotating shaft 26 can rotate on the seat frame 24. The convex rotating shaft 26 cooperates with the deformation part 27 on the hip wrap 25, so that the hip wrap 25 forms a depression when the human body sits, so that the seat assembly can achieve a hip wrap effect; the buttocks sinking on the seat assembly are wrapped, so that the user's buttocks are gathered together to prevent deformation and looseness, which can both shape the body and take care of health; the convex rotating shaft 26 can also serve as the main support of the deformation part 27, preventing the deformation part 27 from producing exaggerated deformation and affecting comfort, and preventing the hip wrap 25 from being damaged due to excessive deformation.

[0071] Specifically, if Figure 21-23 As shown, the supporting member is a seat cushion 28, which is arranged on the hip-wrapping member 25 and covers the upper surface of the hip-wrapping member 25. The seat cushion 28 will produce corresponding deformation as the hip-wrapping member 25 deforms. The upper surface of the seat cushion 28 forms a supporting surface for supporting the human buttocks. This solution enables the supporting surface to fit the human buttocks, while the seat assembly wraps the human buttocks.

[0072] like Figure 28-30 As shown, the hip wrap 25 includes two deformation parts 27, and the deformation parts 27 are symmetrically distributed on the hip wrap 25. The convex rotation shaft 26 is located below the deformation part 27 and the convex rotation shaft 26 is provided below the two deformation parts 27. The convex rotation shaft 26 is arranged along the front-to-back direction, that is, the axis of the convex rotation shaft 26 extends along the front-to-back direction; Fig.30 , 31As shown, the convex rotating shaft 26 has a curved surface located at the bottom, and a rotation groove 29 is opened on the seat frame 24 corresponding to the curved surface of the convex rotating shaft 26, and the convex rotating shaft 26 is rotatably set in the rotation groove 29. Specifically, a plurality of vertically arranged support plates 30 are provided on the seat frame 24, and the rotation groove 29 is opened on the support plates 30; the support plates 30 are symmetrically distributed on both sides of the seat frame 24 in the same number, and the support plates 30 located on one side of the seat frame 24 are arranged at intervals in the front-to-back direction. In this embodiment, there are six support plates 30 on each side, and the rotation grooves 29 on each support plate 30 located on one side of the seat frame 24 are aligned. After the convex rotating shaft 26 is placed in the rotation grooves 29 of these support plates 30, it can rotate stably. The reason why the two deformation parts 27 are arranged left and right instead of front and back is that when sitting, the most obvious deformation is the left and right outward expansion of the buttocks. The deformation parts 27 are symmetrically distributed on the left and right sides, and can mainly provide left and right sides of the buttocks when deformed inward, thereby tightening the buttocks and preventing the buttocks from expanding outward in the left and right directions. The support piece 30 is selected instead of the overall seat in order to save costs and reduce the overall weight of the seat frame 24. With the action of multiple support pieces 30, the buttocks package 25 can be stably supported, and the convex rotating shaft 26 can also rotate stably.

[0073] Furthermore, if Fig.28 , 29 As shown, a plurality of hollows are provided on the hip wrap 25, and the hollows are arranged around the deformation part 27, and the hollows provide favorable conditions for the deformation of the deformation part 27; specifically, the hollows are divided into U-shaped hollows 33, transverse hollows 34 and longitudinal hollows 35, and there are a plurality of U-shaped hollows 33, which are arranged along the contour of the deformation part 27, and a plurality of U-shaped hollows 33 are arranged around each deformation part 27, and the plurality of U-shaped hollows 33 are arranged at intervals along the left and right directions. In this embodiment, three U-shaped hollows 33 are arranged around a single deformation part 27 from the outside to the inside, and the U-shaped hollows 33 closer to the middle of the hip wrap 25 are larger in size, and the U-shaped hollows 33 on the inside surround the U-shaped hollows 33 on the outside; Furthermore, the outer side edge of the deformation part 27 is connected to the main body of the hip wrap 25, and the connection point is the deformation position. The U-shaped hollow 33 is located around the contour of the deformation part 27, so that the other three sides of the deformation part 27 are separated from the main body of the hip wrap 25, and the deformation part 27 can be flexibly deformed. When the human body sits, the inner side edge of the deformation part 27 is displaced downward relative to the outer side edge, and the whole can bend and deform downward, thereby producing an inward-sinking effect; there is more than one U-shaped hollow 33 around the deformation part 27, and each U-shaped hollow 33 is arranged at intervals, so that the deformable area of ​​the hip wrap 25 radiates outward from the deformation part 27, thereby increasing the deformation ability, and at the same time further wrapping the buttocks from the front and back directions.

[0074] The transverse hollowing 34 is arranged along the left-right direction, and the longitudinal hollowing 35 is arranged along the front-back direction. In the present embodiment, there is only one longitudinal hollowing 35, which is located on the midline of the hip-wrapping part 25; the transverse hollowing 34 includes a partitioning hollowing 341, and the partitioning hollowing 341 is opened on the deformation part 27, and the two deformation parts 27 are partitioned by the partitioning hollowing 341. In the present embodiment, in addition to the partitioning hollowing 341, there are three transverse hollowings 34, and the lengths of the three transverse hollowings 34 are all different. Two transverse hollowings 34 are opened at the front of the hip-wrapping part 25, and the other transverse hollowing 34 is opened at the rear of the hip-wrapping part 25; the transverse hollowing 34 can further increase the ability of the hip-wrapping part 25 to deform in the front-back direction, and the longitudinal hollowing 35 can further increase the ability to deform in the left-right direction; the partitioning hollowing 341 partitions the single deformation part 27, and also allows the deformation part 27 itself to produce a front-to-back twisting deformation, which is more flexible and increases the wrapping ability of the seat assembly in the front-to-back direction.

[0075] Furthermore, if Fig.29 , 30 As shown, a plurality of U-shaped connecting pieces 36 are provided at the hollowed-out parts, and the connecting pieces 36 are all protruding and bent downward; the connecting pieces 36 increase the overall strength of the deformable part 27 while maintaining the deformable ability of the deformable part 27; due to the deformable ability of the seat assembly, when a human body sits, the supporting surface will also be concave and deformed downward, the area of ​​the entire supporting surface is increasing, and the hollowing is expanding. At this time, the connecting pieces 36 are more needed to improve the strength of the hip wrap 25.

[0076] In addition, the front and rear parts of the hip wrap 25 and the seat frame 24 are connected by screws.

Claims

1. A multi-dimensional posture correction ergonomic chair, characterized by: The invention comprises a chair back assembly and a chair seat assembly, wherein the chair back assembly is arranged on the chair seat assembly; the chair back assembly comprises a lumbar support member for supporting the waist of a human body, and the lumbar support member is configured so that the two ends of the lumbar support member are close to each other to clamp the waist of the human body; the chair seat assembly comprises a hip wrap member and a support member, wherein the support member is arranged on the hip wrap member, and the support member is configured to directly support the buttocks of a human body, and the hip wrap member is configured so that when a human body sits, the hip wrap member is sunken and wraps the buttocks of a human body together with the support member; when a human body sits, the lumbar support member and the hip wrap member can respectively maintain the postures of the waist and buttocks.

2. The multi-dimensional posture correction ergonomic chair according to claim 1, characterized in that: The chair back assembly also includes a chair back frame, an adjustment unit and two armrest assemblies arranged on both sides of the adjustment unit, the lumbar support is installed on the adjustment unit, the adjustment unit is installed on the chair back frame, and the two armrest assemblies are rotatably arranged on the adjustment unit around a vertical axis; the adjustment unit is configured to rotate the two armrest assemblies simultaneously and to maintain the two armrest assemblies in the rotated position; when the two armrest assemblies approach each other at one end away from the adjustment unit, the two armrest assemblies drive the two ends of the lumbar support to approach each other and clamp the human waist.

3. The multi-dimensional posture correction ergonomic chair according to claim 2, characterized in that: The lumbar support is elastic. When the ends of the two armrest assemblies away from the adjustment unit move closer to each other and close and rotate, the armrest assemblies drive the lumbar support to produce elastic deformation, and make the two ends of the lumbar support move closer to each other to clamp the human waist; when the ends of the two armrest assemblies away from the adjustment unit move away from each other and open and rotate, the lumbar support restores the elastic deformation.

4. The multi-dimensional posture correction ergonomic chair according to claim 2, characterized in that: The lumbar support component is in abutment and sliding cooperation with the two armrest components. When the two armrest components are closed, the lumbar support component slides relatively with the armrest components, and the armrest components drive the two ends of the lumbar support component to approach and gather together.

5. The multi-dimensional posture correction ergonomic chair according to claim 2, characterized in that: The adjusting unit is provided with two mutually meshing gears, the two armrest assemblies are linked through the two gears, the two armrest assemblies are provided with meshing teeth, and the meshing teeth on the two armrest assemblies are respectively meshed with the two gears.

6. The multi-dimensional posture correction ergonomic chair according to claim 2, characterized in that: Two left-right symmetrical sliders are provided on the adjustment unit, the two sliders are located between the two armrest assemblies and both sliders can slide on the adjustment unit in the left-right direction, and a spring is provided between the two sliders; a plurality of ratchets are provided on the armrest assembly, and the slider includes locking teeth meshed with the ratchets, and the ratchets and the locking teeth are one-way self-locking; when the two armrest assemblies are closed and rotated, the locking teeth are meshed with different ratchets; when the two armrest assemblies have a tendency to open and rotate, the ratchets and the locking teeth are self-locking.

7. The multi-dimensional posture correction ergonomic chair according to claim 6, characterized in that: The armrest assembly is provided with a coaxially rotating self-circulating part, the self-circulating part is provided with an arc-shaped waist hole, and the armrest assembly is provided with a convex shaft inserted in the arc-shaped waist hole. When the armrest assembly rotates, the convex shaft moves in the arc-shaped waist hole; the arc-shaped waist hole has a front end and a rear end, and the self-circulating part is configured so that when the two armrest assemblies are fully opened, the convex shaft is located at the front end of the arc-shaped waist hole, and when the two armrest assemblies are closed, the convex shaft moves from the front end to the rear end of the arc-shaped waist hole; after the convex shaft abuts against the rear end of the arc-shaped waist hole, the two armrest assemblies continue to close, and the convex shaft drives the self-circulating part to rotate, and the two self-circulating parts push the two sliders to approach each other and disengage the ratchet and the locking tooth, so that the two armrest assemblies can be opened and reset; the self-circulating part is provided with an anti-slip boss, and the anti-slip boss is configured so that after the two self-circulating parts push the two sliders to approach each other, the anti-slip boss abuts against the slider, so as to prevent the self-circulating part from disengaging from the slider and causing the ratchet and the locking tooth to engage during the return process of the armrest assembly.

8. The multi-dimensional posture correction ergonomic chair according to claim 1, characterized in that: The chair seat assembly also includes a seat frame, and a hip-wrapping component is installed on the seat frame. A convex shaft that protrudes downward and is arranged horizontally is provided below the hip-wrapping component, and the convex shaft is rotatably set on the seat frame; the hip-wrapping component includes a deformation part, which is elastic. The deformation part and the convex shaft are configured so that when a user sits on the chair seat assembly, the deformation part is deformed, and at the same time the convex shaft rotates relative to the seat frame, and the hip-wrapping component is sunken to wrap the buttocks of the human body.

9. The multi-dimensional posture correction ergonomic chair according to claim 8, characterized in that: The hip wrap includes two deformation parts, which are symmetrically distributed on the hip wrap. The convex rotating shaft is located below the deformation parts and the convex rotating shafts are provided below the two deformation parts. The convex rotating shafts are arranged along the front-to-back direction. A rotating groove is opened on the seat frame, and the convex rotating shaft is rotatably set in the rotating groove.

10. The multi-dimensional posture correction ergonomic chair according to claim 8, characterized in that: The hip wrap is provided with a plurality of hollows, which are arranged around the deformation part; A plurality of connecting pieces are arranged at the hollowed-out part, and the connecting pieces are all convex and curved downward.

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