A segmented adjustable ergonomic chair

Abstract

The present invention discloses a segmented adjustable office chair, comprising: a seat, with mutually parallel slide grooves on both sides; a seat cushion balancing mechanism, which is arranged on the inner side of the slide groove; a backrest support rod, which is rotatably arranged on the rear side of the seat; a backrest adjustment mechanism, which is arranged on the backrest support rod; a curvature adjustment mechanism, which is arranged on the backrest adjustment mechanism; and a backrest support sheet, which is arranged on the curvature adjustment mechanism; wherein, the backrest support sheet is arranged in a plurality along the axial direction of the backrest support rod. The present invention arranges a seat cushion balancing mechanism, so that the seat cushion can be tilted forward and backward through a balancing shaft, so as to adjust the seating pressure and improve the comfort of the device, and arranges a plurality of backrest support sheets for supporting the back, and each backrest support sheet can be adjusted through a backrest adjustment mechanism and a curvature adjustment mechanism to adapt to the back curves of users of different body shapes, which is conducive to improving the comfort and applicability of the device.

Description

Technical Field

[0001] The invention relates to the field of office furniture, in particular to a segmented adjustable ergonomic chair. Background Art

[0002] An office chair refers to a variety of chairs that are used for the convenience of work in daily work and social activities. A general office chair refers to a chair with a backrest that a person sits on when doing desk work in a sitting position. Traditional office chairs are usually equipped with casters and gas pressure rods to facilitate the movement of the chair and adjust the height of the chair. However, after using an ordinary office chair for too long, the user will still feel tired. Therefore, in recent years, an office chair specially designed for the human body curve structure has emerged to adapt to the human sitting posture, improve riding comfort, and reduce fatigue.

[0003] The applicant has found that the seat cushions of existing office chairs are often fixed structures. When the human body is in a reclining position, the center of gravity is located at the buttocks, while when working at a desk, the center of gravity will shift to the thighs. Since the seat cushions of general chairs are fixed structures, they cannot be adjusted according to the changes in the center of gravity, resulting in uneven force. The weight of the human body is concentrated on the buttocks or thighs for a long time, which is prone to fatigue and soreness, and the comfort and flexibility of use are low. At the same time, the backrests of existing office chairs are often integral structures, or are simply divided into several major parts such as the waist, back and head. The back curve of the human body is determined by 26 large segmented bones of the spine. Therefore, ordinary chairs have too few segments and cannot be adjusted to a suitable curve according to people of different heights and body shapes. The applicability is low, and the lateral curvature of the backrest is often a fixed structure, which is difficult to adjust specifically according to the back curve of the user. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a segmented adjustable ergonomic chair to achieve flexible adjustment according to the user's body shape, thereby improving riding comfort and applicability.

[0005] 1. Based on the above purpose, the present invention provides a segmented adjustable ergonomic chair, comprising:

[0006] The seat is provided with mutually parallel slide grooves on both the left and right sides;

[0007] A seat cushion balancing mechanism is arranged on the inner side of the slide groove;

[0008] A backrest support rod rotatably disposed on the rear side of the seat;

[0009] A backrest adjustment mechanism, arranged on the backrest support rod;

[0010] A curvature adjustment mechanism, arranged on the backrest adjustment mechanism;

[0011] A backrest support sheet, arranged on the curvature adjustment mechanism;

[0012] Wherein, a plurality of backrest support sheets are arranged along the axial direction of the backrest support rod.

[0013] In some optional embodiments, the seat cushion balancing mechanism includes a slide and a balancing shaft connected to the inner side of the slide, the slide is arranged on the inner side of the slide groove, the middle of the balancing shaft is connected to a seat cushion, and the seat cushion can be rotated on the slide through the balancing shaft to adjust the balance.

[0014] In some optional embodiments, the backrest adjustment mechanism includes a fixed sleeve and a locking button arranged in the middle of the fixed sleeve, the fixed sleeve is nested and installed on the backrest support rod, and can be moved and adjusted on the backrest support rod, a horizontal sleeve is arranged on the outer side of the fixed sleeve, a horizontal support rod is nested in the horizontal sleeve, and the horizontal support rod can be moved and adjusted in the horizontal sleeve.

[0015] In some optional embodiments, the curvature adjustment mechanism includes a center seat, the center seat is connected to one end of the horizontal support rod, the backrest support plate is arranged in the middle of the center seat, an adjusting screw is arranged on the other end of the horizontal support rod, and adjustment knobs are arranged at both ends of the adjusting screw. Adjusting sleeves are symmetrically arranged on both sides of the adjusting screw, and the adjusting sleeves are nested and installed on the outside of the adjusting screw. A sleeve rotating shaft is arranged on one side of the adjusting sleeve, one end of the adjusting connecting rod is connected to the adjusting sleeve through the sleeve rotating shaft, and the other end of the adjusting connecting rod is connected to the backrest support plate through the connecting rod rotating shaft.

[0016] In some optional embodiments, the side surface of the backrest support sheet is concave.

[0017] In some optional embodiments, the backrest support sheet is made of elastic material.

[0018] In some optional embodiments, a headrest is provided at the upper end of the backrest support rod.

[0019] In some optional embodiments, a correction belt is provided on one side of the backrest support plate.

[0020] From the above description, it can be seen that the present invention provides a segmented adjustable ergonomic chair, in which the seat is used as a base to support the entire seat, and the seat cushion and the seat are connected by a balancing shaft and a sliding seat, so that the seat cushion can be tilted forward and backward through the balancing shaft to adjust the riding pressure and improve the comfort of the device. At the same time, the front and rear position of the seat cushion can be adjusted by the sliding seat and the sliding groove, which is beneficial to improving the flexibility and applicability of the device. At the same time, the device is used to support the back by arranging multiple backrest support plates, and each backrest support plate can be adjusted by a backrest adjustment mechanism and a curvature adjustment mechanism to adapt to the back curve of users of different body shapes, which is beneficial to improving the comfort and applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of an embodiment of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure on the left side of an embodiment of the present invention;

[0023] Figure 3 This is a schematic structural diagram of a backrest support rod according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of a chair seat according to an embodiment of the present invention;

[0025] Figure 5 It is a structural schematic diagram of a seat cushion balancing mechanism according to an embodiment of the present invention;

[0026] Figure 6 This is a schematic structural diagram of a backrest adjustment mechanism according to an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of a fixed ferrule according to an embodiment of the present invention;

[0028] Figure 8 Schematic diagram of the structure of the curvature adjustment mechanism according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0030] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0031] As an embodiment, the present invention provides a segmented adjustable ergonomic chair, comprising:

[0032] The seat is provided with mutually parallel slide grooves on both the left and right sides;

[0033] A seat cushion balancing mechanism is arranged on the inner side of the slide groove;

[0034] A backrest support rod rotatably disposed on the rear side of the seat;

[0035] A backrest adjustment mechanism, arranged on the backrest support rod;

[0036] A curvature adjustment mechanism, arranged on the backrest adjustment mechanism;

[0037] A backrest support sheet, arranged on the curvature adjustment mechanism;

[0038] Wherein, a plurality of backrest support sheets are arranged along the axial direction of the backrest support rod.

[0039] See also Figures 1 to 3 As an embodiment of the present invention, a segmented adjustable ergonomic chair includes: a seat 1, with parallel slide grooves 2 on both sides; a seat cushion balancing mechanism 3, arranged on the inner side of the slide groove 2; a backrest support rod 4, rotatably arranged on the rear side of the seat 1; a backrest adjustment mechanism 5, arranged on the backrest support rod 4; a curvature adjustment mechanism 6, arranged on the backrest adjustment mechanism 5; a backrest support sheet 7, arranged on the curvature adjustment mechanism 6; wherein, a plurality of backrest support sheets 7 are arranged along the axial direction of the backrest support rod 4.

[0040] See also Figures 3 to 5 , Optionally, the seat cushion balancing mechanism 3 includes a slide 301 and a balancing shaft 302 connected to the inner side of the slide 301, the slide 301 is arranged on the inner side of the slide groove 2, and a seat cushion 303 is connected in the middle of the balancing shaft 302, and the seat cushion 303 can be rotated on the slide 301 through the balancing shaft 302 to adjust the balance. When the human body is in a supine state, the center of gravity is located at the buttocks, and the seat cushion 303 can be tilted and rotated backward through the balancing shaft 302 to adjust the pressure so that the pressure is evenly distributed to the buttocks and thighs. When working at a desk, the center of gravity will be transferred to the thighs, and the seat cushion 303 can be tilted and rotated forward through the balancing shaft 302 to adjust the pressure so that the pressure is evenly distributed to the buttocks and thighs, thereby preventing uneven force and the weight of the human body from being concentrated on the buttocks or thighs for a long time, avoiding fatigue and soreness, which is beneficial to improving the comfort of the device. At the same time, the slide 301 can move horizontally in the slide groove 2, thereby adjusting the front and rear position of the seat cushion 303, which is beneficial to improving the flexibility and applicability of the device.

[0041] See also Figure 6 to Figure 7Optionally, the backrest adjustment mechanism 5 includes a fixed sleeve 501 and a locking button 502 arranged in the middle of the fixed sleeve 501, the fixed sleeve 501 is nested and installed on the backrest support rod 4, and can be moved on the backrest support rod 4 to adjust the position, a horizontal sleeve 503 is arranged on the outer side of the fixed sleeve 501, and a horizontal support rod 504 is nested in the horizontal sleeve 503, and the horizontal support rod 504 can be moved in the horizontal sleeve 503 to adjust the position, and the backrest support plate 7 is connected to the horizontal support rod 504 of the backrest adjustment mechanism 5 through the curvature adjustment mechanism 6, so that the height and front and rear position of the backrest support plate 7 can be adjusted through the backrest adjustment mechanism 5, and the height spacing and front and rear position of each section of the backrest support plate 7 can be adjusted to adapt to the back curve of users of different body shapes, improve the comfort of use, and help to improve the flexibility and applicability of the device.

[0042] See also Figure 8 Optionally, the curvature adjustment mechanism 6 includes a center seat 601, the center seat 601 is connected to one end of the horizontal support rod 504, the back support plate 7 is arranged in the middle of the center seat 601, and an adjusting screw 602 is arranged on the other end of the horizontal support rod 504, and adjusting knobs 603 are arranged at both ends of the adjusting screw 602. Adjusting screw sleeves 604 are symmetrically arranged on both sides of the adjusting screw 602, and the adjusting screw sleeves 604 are nested and installed on the outer side of the adjusting screw 602. A screw sleeve rotating shaft 605 is arranged on one side of the adjusting screw sleeve 604, one end of the adjusting connecting rod 606 is connected to the adjusting screw sleeve 604 through the screw sleeve rotating shaft 605, and the other end of the adjusting connecting rod 606 is connected to the back support plate 7 through the connecting rod rotating shaft 607, and the side surface of the back support plate 7 is concave, which is convenient for fitting with the back of the human body, and at the same time, the back support plate 7 It is made of elastic material and can be bent and adjusted within a certain degree. The adjusting screw 602 is driven to rotate by turning the adjusting knob 603, thereby driving the adjusting screw sleeve 604 to move horizontally on the adjusting screw 602. The backrest support plate 7 is driven to shrink inward to reduce the curvature, or expand outward to increase the curvature by adjusting the connecting rod 606 and the connecting rod shaft 607, and the curvature of the backrest support plate 7 is adjusted to adapt to the back curve of users of different body shapes, improve the comfort of use, and help to improve the flexibility and applicability of the device.

[0043] Please refer again Figure 1 to Figure 2, Optionally, a headrest 8 is provided at the upper end of the back support rod 7 for supporting the user's head, and a correction belt 9 is provided on one side of the back support sheet 7. The correction belt 9 can fit the user's back and the back support sheet 7 together to prevent incorrect sitting posture, and a plurality of back support sheets 7 are provided along the axial direction of the back support rod 4, and each back support sheet 7 can be adjusted in height spacing and front and rear position by the back adjustment mechanism 5, and the curvature is adjusted by the curvature adjustment mechanism 6, so the more the number of back support sheets 7, the more detailed the adjustment, the more suitable for the back curve of the human body, the higher the comfort and applicability of use, but correspondingly, the higher the manufacturing cost, the more inconvenient the adjustment, and the fewer the number of back support sheets 7, the lower the manufacturing cost, the more convenient the adjustment, but correspondingly, it is impossible to adjust in detail, it is difficult to adapt to the back curve of the human body, and the comfort and applicability of use are lower, so comprehensively considered, the number of back support sheets 7 arranged in sections is optimally 15 to 30, and this optional embodiment adopts 26 sections equal to the number of movable bones of the human spine.

[0044] When in use, the device supports the main structure through the seat 1. When a person sits on it, the slide seat 301 can be moved horizontally in the slide slot 2 to adjust the front and rear position of the seat cushion 303. At the same time, the adjusting screw 602 can be driven to rotate by turning the adjusting knob 603, thereby driving the adjusting screw sleeve 604 to move horizontally on the adjusting screw 602. The backrest support piece 7 is driven to shrink inward to reduce the curvature or expand outward to increase the curvature by adjusting the connecting rod 606 and the connecting rod shaft 607, and the curvature of the backrest support piece 7 is adjusted to adapt to the back curve of users of different body types. By moving the fixed sleeve 501 up and down on the backrest support rod 4, the height and front and rear position of the backrest support piece 7 can be adjusted. The height spacing and front and rear position of each section of the backrest support piece 7 can be adjusted to adapt to the back curve of users of different body types. When the adjustment is completed and the person sits on it, the device supports the person through the seat cushion 303, and the seat cushion 303 can be moved on the slide seat 301 through the balancing shaft 302 The balance can be adjusted by rotating on the upper part. When the human body is in a supine sitting state, the center of gravity is located at the buttocks, and the seat cushion 303 can be tilted and rotated backwards through the balance shaft 302 to adjust the pressure so that the pressure is evenly distributed to the buttocks and thighs. When working at a desk, the center of gravity will be transferred to the thighs. The seat cushion 303 can be tilted and rotated forwards through the balance shaft 302 to adjust the pressure so that the pressure is evenly distributed to the buttocks and thighs, thereby preventing uneven force and the weight of the human body from being concentrated on the buttocks or thighs for a long time, avoiding fatigue and soreness. At the same time, the multiple sections of the back support plate 7 correspond to the human spine one by one and fit fully with the back of the human body, while the headrest 8 supports the user's head, and the correction belt 9 can be tied to the user's chest, so that the occupant's back and the back support plate 7 fit each other, preventing the occupant's back from not fitting against the back support plate 7 due to incorrect sitting posture.

[0045] The present invention provides a segmented adjustable ergonomic chair, in which the entire chair is supported by a seat as a base, and the seat cushion and the seat are connected by a balancing shaft and a sliding seat, so that the seat cushion can be tilted forward and backward by the balancing shaft to adjust the riding pressure and improve the comfort of the device. At the same time, the front and rear position of the seat cushion can be adjusted by the sliding seat and the sliding groove, which is beneficial to improving the flexibility and applicability of the device. At the same time, the device is used to support the back by arranging multiple backrest support plates, and each backrest support plate can be adjusted by a backrest adjustment mechanism and a curvature adjustment mechanism to adapt to the back curve of users of different body shapes, which is beneficial to improving the comfort and applicability of the device.

[0046] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. Within the scope of the present invention, the above embodiments or technical features in different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0047] In addition, to simplify the description and discussion, and in order not to obscure the present invention, known power / ground connections to integrated circuit (IC) chips and other components may or may not be shown in the provided figures. In addition, the devices may be shown in the form of block diagrams to avoid obscuring the present invention, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform on which the present invention will be implemented (i.e., these details should be fully within the scope of understanding of those skilled in the art). Where specific details (e.g., circuits) are set forth to describe exemplary embodiments of the present invention, it will be apparent to those skilled in the art that the present invention may be implemented without these specific details or with variations in these specific details. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0048] Although the invention has been described in conjunction with specific embodiments of the invention, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

[0049] The embodiments of the present invention are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A segmented adjustable ergonomic chair, characterized in that: include: The seat is provided with mutually parallel slide grooves on both the left and right sides; A seat cushion balancing mechanism is arranged on the inner side of the slide groove; A backrest support rod rotatably disposed on the rear side of the seat; A backrest adjustment mechanism, arranged on the backrest support rod; A curvature adjustment mechanism, arranged on the backrest adjustment mechanism; A backrest support sheet, arranged on the curvature adjustment mechanism; Wherein, the backrest support sheets are provided in a plurality along the axial direction of the backrest support rod; The backrest adjustment mechanism includes a fixed ferrule and a locking button arranged in the middle of the fixed ferrule, the fixed ferrule is nested and installed on the backrest support rod, and can be moved on the backrest support rod to adjust the position, a horizontal sleeve is arranged on the outer side of the fixed ferrule, a horizontal support rod is nested in the horizontal sleeve, and the horizontal support rod can be moved in the horizontal sleeve to adjust the position; The curvature adjustment mechanism includes a center seat, which is connected to one end of a horizontal support rod, and the backrest support plate is arranged in the middle of the center seat. An adjusting screw is arranged on the other end of the horizontal support rod, and adjusting knobs are arranged at both ends of the adjusting screw. Adjusting sleeves are symmetrically arranged on both sides of the adjusting screw, and the adjusting sleeves are nested and installed on the outside of the adjusting screw. A sleeve rotating shaft is arranged on one side of the adjusting sleeve, and an adjusting connecting rod is connected to the inner side of the sleeve rotating shaft. One end of the adjusting connecting rod is connected to the adjusting sleeve through the sleeve rotating shaft, and the other end of the adjusting connecting rod is connected to the backrest support plate through the connecting rod rotating shaft.

2. The segmented adjustable ergonomic chair according to claim 1, characterized in that: The seat cushion balancing mechanism includes a slide and a balancing shaft connected to the inner side of the slide. The slide is arranged on the inner side of the slide groove. A seat cushion is connected in the middle of the balancing shaft. The seat cushion can be rotated on the slide through the balancing shaft to adjust the balance.

3. The segmented adjustable ergonomic chair according to claim 1, characterized in that: The side surface of the backrest supporting piece is a concave surface.

4. The segmented adjustable ergonomic chair according to claim 1, characterized in that: The backrest support sheet is made of elastic material.

5. The segmented adjustable ergonomic chair according to claim 1, characterized in that: A headrest is arranged at the upper end of the backrest support rod.

6. The segmented adjustable ergonomic chair according to claim 1, characterized in that: A correction belt is arranged on one side of the backrest support sheet.

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