Pressure-relieving office chair

Abstract

The application discloses a slow pressure engineering chair, which comprises a chair leg, a gas cylinder, a control device, a cushion, two armrests, a back plate, two sliding sheets, two connecting pieces and two adjusting devices. The one end of the gas cylinder is connected with the chair leg, the control device is connected with the other end of the gas cylinder, the cushion is arranged on the upper end of the control device, the two armrests are connected with the two ends of the cushion, the back plate is connected with the control device, the two sliding sheets are slidably connected with the back plate along the up-down direction, each connecting piece is connected with a sliding sheet, each adjusting device is slidably connected with a connecting piece along the left-right direction, and each backrest is connected with an adjusting device. The backrest has up-down and left-right adjusting property, and the needs of people with different ages and different body types are met. Meanwhile, the massage particles with a hardness of 40 degrees and the breathable mesh are combined, and the pressure of long sitting is effectively relieved. Moreover, the back bone of students in the growth and development stage can be effectively corrected, the comfort during learning is improved, and long-term damage of the back and waist is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of furniture chair, in particular to a pressure relief ergonomic chair. BACKGROUND

[0002] Many people think that smoking is the biggest harm to health, in fact, the harm of long-term sitting far exceeds smoking, long-term sitting behavior has been listed as the world health organization's top killer. If in life often continuously sit more than 90 minutes, there may be health problems.

[0003] On the market, most of the seats only set the seat plate and backrest on the chair, only play the role of seat, some just adjust the backrest or seat plate to adjust the sitting posture. In work and study, usually through a long time to complete the work and study task, ordinary chair in long time use, will let the body feel many sore and fatigue, and can not be a good relief of sitting pressure, so also can lead to the body disease. And for students, the growing stage of students' bones are soft compared to adults, and should be protected from students. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a pressure relief ergonomic chair.

[0005] In order to achieve the above purpose, the technical scheme adopted by the present application is:

[0006] A pressure relief ergonomic chair, comprising: a chair leg; a gas cylinder, one end of the gas cylinder is connected with the chair leg; a control device, the other end of the gas cylinder is connected with the control device; a seat cushion, the seat cushion is arranged on the upper end of the control device; two armrests, two armrests are connected with both ends of the seat cushion; wherein, further comprising: a back plate, the back plate is connected with the control device; two sliding pieces, two sliding pieces are slidably connected with the back plate along the up-down direction; two connecting pieces, each connecting piece is connected with a sliding piece; two adjusting devices, each adjusting device is slidably connected with a connecting piece along the left-right direction; two backrests, each backrest is connected with an adjusting device.

[0007] The pressure relief ergonomic chair, further comprising: two fixed covers, two fixed covers are arranged on both sides of the back plate, each fixed cover is provided with a strip-shaped hole along the up-down direction, and each sliding piece is slidably arranged in the strip-shaped hole.

[0008] The pressure relief ergonomic chair, wherein the side edge of each strip-shaped hole is in a wave shape, and the side edge of each sliding piece is in a wave shape matched with the strip-shaped hole.

[0009] In the aforementioned pressure-relieving ergonomic chair, each of the connecting members is an "S"-shaped spring sheet, and one end of each connecting member is fixedly connected to a sliding piece.

[0010] In the aforementioned pressure-relieving ergonomic chair, each of the adjustment devices includes: a device box, which is fixedly connected to the backrest; and an adjustment box, which is installed with the device box to form a cavity, with the other end of the connector fixedly installed in the cavity.

[0011] The aforementioned pressure-relieving ergonomic chair, wherein each of the aforementioned adjustment devices further includes: a mounting base, the mounting base being fixedly connected to the other end of the connector; a spring, the spring being disposed within the mounting base in the vertical direction; and a positioning bead, the positioning bead being disposed at the upper end of the spring, wherein the upper end of the adjustment box has a plurality of locking holes in the horizontal direction, and the positioning bead can be locked into any one of the locking holes.

[0012] In the aforementioned pressure-relieving ergonomic chair, each of the connecting members consists of two "S"-shaped spring plates.

[0013] The aforementioned pressure-relieving ergonomic chair further includes: two protective shells, each of which covers an adjustment device and / or a connector.

[0014] The aforementioned pressure-relieving ergonomic chair, wherein each of the backrests includes: a frame connected to the adjustment device; and a soft rubber cover covering the frame.

[0015] The aforementioned pressure-relieving ergonomic chair includes a seat cushion comprising: a panel; a fixing ring disposed at the lower end of the panel; a pressure-relieving block disposed between the panel and the fixing ring; a base disposed at the lower end of the fixing ring and at the upper end of the control device, and two armrests connecting the two ends of the base.

[0016] The aforementioned pressure-relieving ergonomic chair, wherein the control device further includes: a seat cushion adjustment rod, which controls the lifting and lowering of the cylinder; and a backrest adjustment rod, which controls the tilting of the backrest.

[0017] The aforementioned pressure-relieving ergonomic chair has a handle on the back panel.

[0018] The present invention, by employing the above-mentioned technology, has the following positive effects compared with the prior art:

[0019] (1) The backrest of this invention is adjustable up, down, left, and right to meet the needs of people of different ages and body types. At the same time, combined with massage particles and breathable mesh with a soft rubber cover of 40 degrees hardness, it effectively relieves the pressure of sitting for a long time. Moreover, it can effectively correct the back bones of students in the growth and development stage, improve the comfort of studying, and avoid long-term damage to the back and waist.

[0020] (2) The two backrests of this invention adopt a wraparound design, which conforms to the natural curvature of the human spine and can meet different leaning postures. The two backrests can move in the left and right directions to adjust the force direction of the backrests, so that the pressure on the spine is transferred to the two supporting backrests, ensuring that pressure is relieved during long periods of sitting.

[0021] (3) The backrest of the present invention utilizes a secondary molding process to cover a soft rubber sleeve with a hardness of 40 degrees and combine it with an injection-molded frame. The soft rubber sleeve with a hardness of 40 degrees is selected to adapt to the hardness of the human back and can relieve the fatigue of the human back.

[0022] (4) The backrest of the present invention utilizes a secondary molding process to combine a soft rubber sleeve with a hardness of 40 degrees and an injection-molded skeleton into one piece, making it easy to clean and maintain during use.

[0023] (5) The panel, fixing ring and chassis of the present invention are curved surfaces with arcs, which conform to the natural curve of the human buttocks, conform to ergonomics, and improve the comfort of people who sit for long periods of time and are prone to fatigue.

[0024] (6) The front of the panel, fixing ring, pressure relief block and chassis of the present invention is designed with a forward-leaning arc, which effectively prevents the problem of sitting posture deformation and is especially able to correct the sitting posture of students.

[0025] (7) The present invention can adjust the height of the seat cushion and the angle of the backrest through the control device. The angle can be up to 160° to adapt to different people and achieve the most comfortable sitting posture.

[0026] (8) The backrest handle of the present invention effectively facilitates portability and also makes it easy to place your hand on the handle and move the chair together with the wheels. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a pressure-relieving ergonomic chair according to the present invention.

[0028] Figure 2 This is a rear view of a pressure-relieving ergonomic chair according to the present invention.

[0029] Figure 3 This is an exploded view of a pressure-relieving ergonomic chair according to the present invention.

[0030] Figure 4 This is an exploded view of another angle of a pressure-relieving ergonomic chair according to the present invention.

[0031] Figure 5a and Figure 5b This is a schematic diagram of the adjustable tilt angle of a pressure-relieving ergonomic chair according to the present invention.

[0032] Figure 6a and Figure 6b This is a schematic diagram of the adjustable height of a pressure-relieving ergonomic chair according to the present invention.

[0033] Figure 7 This is an exploded view of the seat cushion in a pressure-relieving ergonomic chair according to the present invention.

[0034] Figure 8 This is an exploded view of the backrest portion of a pressure-relieving ergonomic chair according to the present invention.

[0035] Figure 9 This is an exploded view of the backrest portion of a pressure-relieving ergonomic chair according to the present invention from another angle.

[0036] Figure 10 This is a schematic diagram of the backrest portion of a pressure-relieving ergonomic chair according to the present invention.

[0037] Figure 11 This is a schematic diagram of the backrest portion of a pressure-relieving ergonomic chair according to the present invention from another angle.

[0038] Figure 12a to Figure 12c This is a schematic diagram of the backrest portion of a pressure-relieving ergonomic chair of the present invention moving in the left-right direction.

[0039] Figure 13a to Figure 13c This is a schematic diagram illustrating the principle of the backrest portion moving in the left-right direction in a pressure-relieving ergonomic chair according to the present invention.

[0040] Figure 14 This is a schematic diagram of an adjustment device in a pressure-relieving ergonomic chair according to the present invention.

[0041] Figure 15 This is a schematic diagram of a connecting component in a pressure-relieving ergonomic chair according to the present invention.

[0042] Figure 16 This is a schematic diagram of the sliding plate in a pressure-relieving ergonomic chair according to the present invention.

[0043] In the attached diagram: 1. Back panel; 11. Handle; 2. Sliding piece; 3. Connector; 4. Adjustment device; 41. Device box; 42. Adjustment box; 43. Mounting base; 44. Spring; 45. Positioning bead; 46. Locking hole; 5. Backrest; 51. Frame; 52. Soft rubber sleeve; 6. Fixing cover; 61. Strip hole; 7. Protective box; 8. Straps; 9. Chair legs; 10. Cylinder; 20. Control device; 201. Seat cushion adjustment rod; 202. Backrest adjustment rod; 30. Seat cushion; 301. Panel; 302. Fixing ring; 303. Pressure relief block; 304. Chassis; 305. Groove; 40. Armrest; 50. Positioning plate. Detailed Implementation

[0044] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Figure 1 This is a schematic diagram of a preferred embodiment of a pressure-relieving ergonomic chair. Figure 2 This is a rear view of a preferred embodiment of a pressure-relieving ergonomic chair. Figure 3 This is an exploded view of a preferred embodiment of a pressure-relieving ergonomic chair. Figure 4 This is an exploded view from another angle of a preferred embodiment of the pressure-relieving ergonomic chair. Figure 8 This is an exploded view of the backrest portion of a pressure-relieving ergonomic chair according to a preferred embodiment. Figure 9 This is an exploded view of the backrest portion of a preferred embodiment of a pressure-relieving ergonomic chair from another angle. Figure 10 This is a schematic diagram of the backrest portion of a preferred embodiment of a pressure-relieving ergonomic chair. Figure 11 This is a schematic diagram of the backrest portion of a preferred embodiment of a pressure-relieving ergonomic chair from another angle. Figure 12a This is a schematic diagram illustrating the left-right movement of the backrest portion in a preferred embodiment of a pressure-relieving ergonomic chair. Please refer to [link / reference]. Figures 1 to 4 , Figures 8 to 12a As shown, a preferred embodiment of a pressure-relieving ergonomic chair includes: a chair leg 9 and a cylinder 10, one end of which is fixedly connected to the chair leg 9. Preferably, the chair leg 9 may be a five-pronged chair leg, and wheels are mounted on the heads of the five prongs.

[0046] Furthermore, in a preferred embodiment, the pressure-relieving ergonomic chair further includes a control device 20, which is fixedly connected to the other end of the cylinder 10 opposite to the chair leg 9. The control device 20 can control the cylinder 10 to perform piston movement.

[0047] Furthermore, in a preferred embodiment, the pressure-relieving ergonomic chair further includes a seat cushion 30 and two armrests 40, with the seat cushion 30 located at the upper end of the control device 20. Preferably, the seat cushion 30 can be fixedly connected to the control device 20 with screws or other connecting components. The two armrests 40 are installed at both ends of the seat cushion 30.

[0048] Furthermore, in a preferred embodiment, the pressure-relieving ergonomic chair further includes a backrest portion, which is disposed at the upper end of the control device 20, and the control device 20 can control the backrest portion to tilt at an angle.

[0049] On the other hand, the aforementioned backrest portion includes a back panel 1 and two sliding plates 2. The back panel 1 is located at the upper end of the control device 20, and the two sliding plates 2 are connected to the back panel 1. Preferably, the two sliding plates 2 can be located on the left and right sides of the back panel 1. The two sliding plates 2 can slide relative to the back panel 1 in the vertical direction, and the two sliding plates 2 can be fixed at the required position.

[0050] In addition, in a preferred embodiment, the backrest portion further includes two connectors 3 and two adjustment devices 4. Each connector 3 is connected to a sliding piece 2, and each adjustment device 4 is also connected to a connector 3. Each adjustment device 4 can slide relative to the connector 3 in the left-right direction, and each adjustment device 4 can be fixed in the required position.

[0051] In addition, as a preferred embodiment, the backrest portion further includes two backrests 5, each backrest 5 being connected to an adjustment device 4, so that the backrest 5 can slide in the left and right direction via the adjustment device 4, slide in the up and down direction via the slider 2, and be fixed at the required positions in the left, right, and up and down directions, thereby conforming to the curve of each person's back and achieving the best comfort of the backrest.

[0052] In addition to the above, the present invention also has the following embodiments:

[0053] Furthermore, in a preferred embodiment, Figure 15 This is a schematic diagram of a connecting member in a preferred embodiment of a pressure-relieving ergonomic chair. Figure 16 This is a schematic diagram of the sliding plate in a preferred embodiment of a pressure-relieving ergonomic chair. Please refer to [link / reference]. Figures 8 to 11 , Figure 15 and Figure 16 As shown. The aforementioned backrest portion further includes two fixing covers 6, which are mounted on the back panel 1. Preferably, the two fixing covers 6 are fixedly mounted on the left and right sides of the back panel 1. Each fixing cover 6 has a strip-shaped hole 61 along the vertical direction, and each sliding piece 2 is slidably matched with one strip-shaped hole 61, and each sliding piece 2 can be fixed at the desired position in the strip-shaped hole 61.

[0054] Furthermore, in a preferred embodiment, through holes, slots, or other structural forms may be provided on the left and right sides of the back plate 1, which are used to fix the two fixing covers 6.

[0055] Furthermore, in a preferred embodiment, the side of the strip hole 61 of each fixed cover 6 is wavy, the side of each slide 2 is wavy, and the wavy structure of the slide 2 matches the wavy structure of the strip hole 61, so that the slide 2 can move in the vertical direction within the strip hole 61, and the position is fixed by the wavy structure.

[0056] Furthermore, in a preferred embodiment, each connector 3 may be an "S"-shaped spring sheet, and one end of each connector 3 is fixedly connected to a sliding piece 2. Preferably, the end of the connector 3 may be fixedly connected to the sliding piece 2 through a strip-shaped hole 61.

[0057] Furthermore, in a preferred embodiment, Figures 12b to 12c This is a schematic diagram of a preferred embodiment of a pressure-relieving ergonomic chair in which the backrest moves in the left-right direction. Figures 13a to 13c This is a schematic diagram illustrating the principle of a preferred embodiment of a pressure-relieving ergonomic chair where the backrest moves in the left-right direction. Figure 14 Please refer to the schematic diagram of the adjustment device in a preferred embodiment of a pressure-relieving ergonomic chair. Figures 8 to 16 As shown. Each of the above-mentioned adjustment devices 4 includes: a device box 41 and an adjustment box 42, each device box 41 being fixedly connected to a backrest 5. Both the device box 41 and the adjustment box 42 can be semi-enclosed boxes. After the adjustment box 42 and the device box 41 are installed, they form a box with an internal cavity. The other end of each connector 3 relative to the slider 2 is fixedly installed in the cavity of the box. Specifically, after the adjustment box 42 and the device box 41 are installed, a gap can be formed on the side, which communicates with the cavity. The other end of each connector 3 relative to the slider 2 passes through the gap and is fixedly installed in the cavity of the box.

[0058] Furthermore, in a preferred embodiment, each adjustment device 4 further includes: a mounting base 43, a spring 44, and a positioning bead 45. The mounting base 43 is fixedly installed on the other end of the connector 3 relative to the slide 2, that is, the mounting base 43 is located in the cavity of the box body. The spring 44 is disposed in the mounting base 43 in the vertical direction, and the positioning bead 45 is disposed on the upper end of the spring 44.

[0059] Furthermore, in a preferred embodiment, the upper end of the adjustment box 42 has a plurality of locking holes 46 along the left and right direction. The mounting base 43, the spring 44 and the positioning bead 45 are located in the cavity of the box body, and the positioning bead 45 located on the upper end of the spring 44 can be locked or pushed into any one of the locking holes 46.

[0060] Furthermore, in a preferred embodiment, each connector 3 is two “S”-shaped spring sheets, one end of each pair of connectors 3 is fixedly connected to a slide 2 in the vertical direction, and the other end of each pair of connectors 3 relative to the slide 2 is fixedly connected to a mounting base 43.

[0061] Furthermore, in a preferred embodiment, the backrest portion further includes two protective shells 7, each protective shell 7 covering an adjustment device 4 and / or a connector 3, effectively protecting the adjustment device 4 and / or the connector 3 from external impurities affecting its mobility.

[0062] Furthermore, in a preferred embodiment, each of the aforementioned backrests 5 includes a frame 51 and a soft rubber sleeve 52, with each frame 51 fixedly connected to an adjustment device 4. Specifically, each frame 51 is fixedly connected to a device box 41, and each soft rubber sleeve 52 can cover one frame 51.

[0063] Furthermore, in a preferred embodiment, the surface of the soft rubber sleeve 52 is provided with a plurality of massage particles and / or breathable mesh holes. The plurality of massage particles and / or breathable mesh holes are regularly distributed, effectively massaging the back and waist, and achieving the effect of breathability after prolonged sitting.

[0064] Furthermore, in a preferred embodiment, the soft rubber sleeve 52 is designed to conform to the curvature of the human back, and the hardness of the soft rubber sleeve 52 is 40 degrees, which is close to the hardness of human bones. The frame 51 is also designed to conform to the curvature of the human back. The soft rubber sleeve 52 and the injection-molded frame 51 are assembled and installed through a secondary molding process.

[0065] Furthermore, in a preferred embodiment, the two backrests 5 adopt a wraparound design, conforming to the natural curvature of the human spine, and can accommodate different leaning postures. The two backrests 5 can move in the left and right directions to adjust the direction of force on the backrests 5, so that the pressure on the spine is transferred to the two supporting backrests 5, ensuring pressure relief during prolonged sitting.

[0066] Furthermore, in a preferred embodiment, the back panel 1 is provided with a handle 11, which facilitates daily carrying of the backrest and also makes it easier to move the chair by holding the handle 11 with one hand and the other hand with the rest of the chair, in conjunction with the wheels.

[0067] Furthermore, in a preferred embodiment, please refer to... Figures 1 to 16 As shown. The aforementioned seat cushion 30 includes: a panel 301 and a fixing ring 302. The panel 301 is the panel that contacts the human buttocks and can be made of a soft material or a mesh material. The fixing ring 302 is located at the lower end of the panel 301. The panel 301 and the fixing ring 302 are combined through a secondary molding process.

[0068] In addition, as a preferred embodiment, the seat cushion 30 further includes a pressure relief block 303. The pressure relief block 303 may be made of memory foam. The pressure relief block 303 is disposed between the panel 301 and the fixing ring 302, and is located on the front side of the panel 301 and the fixing ring 302 to relieve pressure on the thighs.

[0069] Furthermore, in a preferred embodiment, the aforementioned seat cushion 30 further includes a base 304, which is located at the lower end of the fixing ring 302. The lower end of the fixing ring 302 has several mounting holes, and the fixing ring 302 and the base 304 are fixedly connected by screws or other connecting components. The upper end of the base 304 has a groove 305 for embedding the assembled panel 301 and the fixing ring 302, making the seat cushion 30 a single unit. Simultaneously, the lower end of the base 304 has several mounting holes, and the base 304 is fixedly connected to the control device 20 by screws or other connecting components. In addition, several mounting holes are provided on the left and right sides of the base 304, and the two armrests 40 are fixedly connected to both ends of the base 304 by screws or other connecting components.

[0070] Furthermore, in a preferred embodiment, the panel 301, the fixing ring 302, and the chassis 304 are curved surfaces with an arc, conforming to the natural curve of the human hip and conforming to ergonomics.

[0071] Furthermore, in a preferred embodiment, the front side (near the thigh) of the panel 301, the fixing ring 302, the pressure relief block 303 and the chassis 304 is designed with a forward-leaning arc, which effectively prevents the problem of sitting posture deformation and is especially able to correct the student's sitting posture.

[0072] Furthermore, in a preferred embodiment, the pressure-relieving ergonomic chair further includes a positioning plate 50, one end of which is fixedly connected to the back panel 1, and the other end of which is connected to the control device 20. Preferably, the other end of the positioning plate 50 is inserted into the control device 20 and fixedly connected by screws or other connecting parts.

[0073] Furthermore, in a preferred embodiment, the control device 20 further includes a seat adjustment rod 201 and a backrest adjustment rod 202. The seat adjustment rod 201 controls the lifting and lowering of the piston of the cylinder 10, thereby adjusting the height of the seat 30 to accommodate different people and table heights, achieving the most comfortable sitting posture. The backrest adjustment rod 202 controls the tilt of the backrest, thereby adjusting the angle of the backrest, up to a maximum of 160°.

[0074] In addition to the above, the present invention also has the following usage methods:

[0075] Please see Figure 8 , Figure 15 and Figure 16As shown, when the backrest needs to be adjusted up and down, two sliding pieces 2 move up and down in the strip holes 61 of the two fixed covers 6 respectively, and the position is fixed by the wave-shaped structure. The sliding pieces 2 are connected to the connecting piece 3, the connecting piece 3 is connected to the adjustment device 4, and the adjustment device 4 is connected to the backrest 5, so that the backrest 5 can be adjusted up and down to adjust the height of the backrest 5 to adapt to the back height and back curve of different people.

[0076] Please see Figures 12a to 13c As shown, when the backrest needs to be adjusted left and right, the backrest 5 is moved left and right. The backrest 5 drives the device box 41 and the adjustment box 42 to move left and right. Using the spring 44 and the positioning bead 45, the position of the positioning bead 45 on different locking holes 46 can be changed when the adjustment box 42 moves left and right. In this way, the width of the backrest 5 can be adjusted to adapt to the comfort of different people's backs.

[0077] Please see Figure 3 , Figure 6a and 6b As shown, when the seat height needs to be adjusted, the seat adjustment lever 201 is adjusted. The seat adjustment lever 201 controls the cylinder 10 to rise and fall through the control device 20, thereby driving the seat cushion 30 to rise and fall, adjusting the height of the seat cushion 30 to accommodate different people and table heights.

[0078] Please see Figure 3 , Figure 5a and 5b As shown, when the seat angle needs to be adjusted, the backrest adjustment lever 202 is adjusted. The backrest adjustment lever 202 controls the backrest 1 to tilt via the control device 20, thereby tilting the backrest to adjust the angle to suit the comfort of different people. Of course, the control methods of the seat cushion adjustment lever 201 and the backrest adjustment lever 202 can also be conventional, as long as they meet the requirements for height and angle adjustment.

[0079] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A pressure-relieving ergonomic chair, comprising: Chair legs; A cylinder, one end of which is connected to the chair leg; A control device, which is connected to the other end of the cylinder; A seat cushion, wherein the seat cushion is disposed at the upper end of the control device; Two armrests, the two armrests connecting the two ends of the seat cushion; characterized in that it further includes: A backplate, which is connected to the control device; Two sliding pieces are slidably connected to the back plate in the vertical direction; Two connectors, each of which is connected to one of the sliding pieces; Two adjusting devices, each of which is slidably connected to one of the connecting members in the left-right direction; Two backrests, each of which is connected to one of the adjustment devices; Each of the connectors is an "S"-shaped spring sheet, and one end of each connector is fixedly connected to a sliding piece; Each of the aforementioned adjustment devices includes: Device box, which is fixedly connected to the backrest; An adjustment box is installed with the device box to form a cavity, and the other end of the connector is fixedly installed in the cavity; Each of the aforementioned adjustment devices further includes: Mounting base, the mounting base being fixedly connected to the other end of the connector; A spring, which is disposed within the mounting base in a vertical direction; A positioning bead is located at the upper end of the spring. Several locking holes are opened at the upper end of the adjustment box in the left-right direction, and the positioning bead can be locked into any one of the locking holes. Also includes: Two protective shells, each of which covers one of the adjustment devices and / or one of the connectors.

2. The pressure-relieving ergonomic chair according to claim 1, characterized in that, Also includes: Two fixed covers are provided on both sides of the back plate. Each fixed cover has a strip-shaped hole along the vertical direction. Each sliding piece is slidably disposed in one of the strip-shaped holes.

3. The pressure-relieving ergonomic chair according to claim 2, characterized in that, Each of the strip-shaped holes has a wavy side, and each of the sliders has a wavy side that matches the strip-shaped hole.

4. The pressure-relieving ergonomic chair according to claim 1, characterized in that, Each of the backrests includes: a frame, the frame being connected to the adjustment device; A soft rubber sleeve that covers the skeleton.

5. The pressure-relieving ergonomic chair according to claim 1, characterized in that, The cushion includes: panel; A retaining ring is located at the lower end of the panel; A pressure-relieving block is disposed between the panel and the fixing ring; The chassis is located at the lower end of the fixed ring and at the upper end of the control device, and the two handrails connect the two ends of the chassis.

6. The pressure-relieving ergonomic chair according to claim 1, characterized in that, The control device further includes: a seat adjustment rod, which controls the lifting and lowering of the cylinder; A backrest adjustment rod controls the tilt of the back panel.

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