Chair

Abstract

The invention discloses a chair. The chair according to the present invention comprises: a chair body provided with a base frame; a first support part which is provided on the base frame so as to support the buttocks and back of the user, and which operates in accordance with the user's operation; and a second support part provided on the base frame to elastically support the first support part, the second support part acting in correspondence with the back support body of the first support part when the first support part acts, the posture of the second support part being changed over a wide range by mutual operation of the three support parts, and the center of gravity being moved in accordance with the posture of the user to control the overall balance.

Description

TECHNICAL FIELD

[0001] The present invention relates to a chair, and more particularly, to a chair capable of performing an action corresponding to a user's action, automatically adjusting a posture angle from a situation in which the user concentrates on work to an angle at which the user can lie down and rest. BACKGROUND

[0002] In general, an office or student chair is used with a desk for work or study, etc. in a company or a home, and is generally different in technical fields from a seat installed in a car. A seat plate is a component of such an office chair, and functions to support a user's hips.

[0003] Most of such conventional chairs are not fixed to the ground by the legs of the chair, and thus the entire chair including the legs can be moved at will, and such chairs have been proposed to have various functions such as a height adjustment function, a rotation function, and a backrest angle adjustment function.

[0004] In recent years, modern people spend more time sitting on a chair, and thus a load on the upper body is concentrated on the sacrum and the hip joint while sitting on the chair for a long time, and pain and stiffness are induced by a force applied to a hard seat plate of the chair, and the user changes a sitting posture to reduce the pain, and thus an unhealthy posture is continuously maintained, and thus a disease such as a lumbar burden or a scoliosis is induced, and the hips are closely attached in a state of being pressed by the seat plate, and thus a seat is inconvenient, and metabolism is blocked, and skin discoloration and keratinization are induced, and thus health and beauty are affected.

[0005] The conventional chair does not link a portion supporting the user's back and a portion supporting the hips, and thus is not sufficient to support a user's action in ergonomics, and thus improvement measures are required.

[0006] However, although a curble chair has been disclosed in the past, it is limited to a case in which it is used as a sitting chair in contact with a room and a floor or the like, or is used on an existing chair, and thus is limited in use as a general office or desk chair.

[0007] The above technical features are background art for helping to understand the present invention, and do not mean prior art widely known in the technical field to which the present invention pertains. SUMMARY

[0008] TECHNICAL PROBLEM

[0009] Therefore, the present invention is to solve the technical problem of providing a chair capable of performing an action corresponding to a user's action, automatically adjusting a posture angle from a situation in which the user concentrates on work to an angle at which the user can lie down and rest.

[0010] SOLUTION TO THE PROBLEM

[0011] According to an aspect of the present application, there can be provided a chair including a chair body provided with a base frame; a first support part provided to the base frame to support a user's hips and back and to move in correspondence with the user's movement; and a second support part provided to the base frame to support the first support part and to move in correspondence with a back support body of the first support part when the first support part moves, wherein the second support part elastically supports a back support body of the first support part while supporting a rolling movement of a hip support body of the first support part.

[0012] The first support part can include the hip support body movably provided to the base frame to support the user's hips; the back support body provided to be connected to the hip support body to support the user's back and supported by the second support part; and a rotation guide member rotatably provided to the back support body and guided by a guide arm of the second support part to guide a rotation of the first support part.

[0013] The second support part can include a base support body supporting the back support body; a connecting plate having one side portion coupled to the base frame and the other side portion connected to the base support body; a guide arm provided to the connecting plate to guide a movement of the back support body; and a first elastic support part provided to the base support body to elastically support the back support body.

[0014] The chair body can further include a leg support part movably provided to the base frame to support the user's legs; and a center of gravity moving part provided to the second support part to control a center of gravity movement of the first support part.

[0015] Further, according to another aspect of the present application, there can be provided a chair including a chair body including a base frame and a base support arm provided to the base frame; a first support part provided apart from the base frame to support a user's hips and back and to move in correspondence with the user's movement; and a second support part provided between the base frame and the first support part to support the first support part and to move in correspondence with a back support body of the first support part when the first support part moves, wherein the first support part and the second support part move forward when the back support body and a base support body of the second support part are inclined backward.

[0016] The first support portion further includes: a base roller rotatably disposed on the base support arm; and at least one base support roller rotatably disposed on the base frame to support the connecting plate of the second support portion. The second support portion may further include: a roller member disposed on the base support body and connected to the base roller, thereby preventing the base roller 160 from detaching from the base support body 310.

[0017] It may also include: a lumbar support, disposed on the back support body to support the user's back, wherein when the back support body tilts backward, the lumbar support moves backward to prevent interference with the user's back.

[0018] According to one aspect of the present invention, a chair may be provided, comprising: a chair body having a base frame; a first support unit disposed on the base frame to support the hips and back of a user; and a second support unit disposed on the base frame to support the first support unit, wherein when the first support unit tilts backward, the area of ​​the second support unit used to support the hips of the user moves forward.

[0019] The first support unit may include: a first hip support portion disposed on the upper part of the base frame to support the area of ​​the second support unit used to support the user's hips; a first back support portion disposed on the first hip support portion to support the user's back; and a first elastic support portion disposed on the first back support portion, which is elastically supported by the second support unit in the area corresponding to the first back support portion when the first back support portion tilts backward.

[0020] The second support unit may include: a second hip support portion, movably supported on the base frame and combined with the first hip support portion; a second back support portion, rotatably combined with the chair body and connected to the second hip support portion; and a stop portion, disposed on the second hip support portion to restrict the movement of the second hip support portion.

[0021] The aforementioned second hip support includes: a second hip support body, wherein the first hip support body of the aforementioned first hip support is detachably coupled to the upper part of the aforementioned second hip support body; and a second hip support frame, which is movably coupled along the front-rear direction of the aforementioned base frame, and the aforementioned second hip support body is detachably coupled to the aforementioned second hip support frame. The aforementioned chair body may further include: a body elastic support portion, which is disposed on the aforementioned base frame to elastically support the movement of the aforementioned second hip support frame.

[0022] It may also include: a lumbar support portion, provided in the first back support portion of the first support unit above to support the user's lumbar spine.

[0023] Invention Effects

[0024] Embodiments of the present invention may provide a chair that can move in response to the user's movements, automatically adjusting its posture angle from when the user is focused on working to when they can lie down and rest.

[0025] In addition, the hip support and back support move according to the user's movements, thus providing more efficient support for the user's back and hip areas.

[0026] Furthermore, when the first support part tilts, the second support part supports the first support part while being supported by the third support part, thereby achieving stable movement and smooth tilting.

[0027] Furthermore, when the back support body and the base support body tilt backward, the center of gravity shifts due to the forward movement of the center of gravity shifting part or the first support part and the second support part, thereby preventing the chair from tipping over. Attached Figure Description

[0028] Figure 1 This is a schematic side view of a chair according to an embodiment of the present invention.

[0029] Figure 2 It is a general overview Figure 1 An exploded side view showing the first support portion separated from the second support portion.

[0030] Figure 3 yes Figure 1 The diagram showing the movement of the lumbar spine support is a rough representation of how the moving part of the support moves backward due to the rotation of the rotating guide member.

[0031] Figure 4 It is shown in magnification Figure 3 The diagram shows a lumbar spine support system.

[0032] Figure 5 yes Figure 3 Another embodiment of the lumbar spine support shown.

[0033] Figure 6 It is a general overview Figure 1 The diagram shows the first and second support sections tilting backward.

[0034] Figure 7 This is an action diagram of this embodiment, which schematically shows the process of the back support body being supported and tilted by the base support body.

[0035] Figure 8 This is a diagram that schematically illustrates the center-of-gravity movement section of this embodiment.

[0036] Figure 9 yes Figure 8 The diagram shows the movement of the center of gravity shifting part.

[0037] Figure 10 It is a general overview Figure 1 The diagram shows the support plate.

[0038] Figure 11 This is a schematic side view of a chair according to another embodiment of the present invention.

[0039] Figure 12 It is a general overview Figure 11 The diagram shows the back support body and base support body tilting backward while the hip support body and connecting plate move forward.

[0040] Figure 13 It is shown in magnification Figure 11 The diagram shows the base roller area. Detailed Implementation

[0041] To fully understand the present invention, its operational advantages, and the objectives achieved through its implementation, reference should be made to the accompanying drawings illustrating preferred embodiments of the invention and the contents described therein.

[0042] The present invention will now be described in detail with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. The same reference numerals in each figure denote the same components.

[0043] Figure 1 This is a schematic side view of a chair according to an embodiment of the present invention. Figure 2 It is a general overview Figure 1 The exploded side view shown is a view of the first support portion separated from the second support portion. Figure 3 yes Figure 1 The diagram showing the movement of the lumbar spine support is a simplified representation of how the moving part of the support moves backward due to the rotation of the rotational guide component. Figure 4 It is shown in magnification Figure 3 The diagram shown is of a lumbar spine support system. Figure 6 yes Figure 3 Another embodiment of the lumbar spine support shown.

[0044] and, Figure 6 It is a general overview Figure 1 The diagram shows the first and second support parts tilting backward. Figure 7 This is an action diagram of this embodiment, which schematically illustrates the process of the back support body being supported and tilted by the base support body. Figure 8 This is a schematic diagram illustrating the center-of-gravity shifting part of this embodiment. Figure 9 yes Figure 8The diagram shown illustrates the movement of the center of gravity shifting mechanism. Figure 10 It is a general overview Figure 1 The diagram shown is an example of a support plate.

[0045] As shown in the accompanying drawings, the chair 1 according to this embodiment includes: a chair body 100, with a base frame 110; a first support 200, disposed on the base frame 110 to support the user's buttocks and back, and moving in response to the user's movements; a second support 300, disposed on the base frame 110 to elastically support the first support 200, and moving in response to the back support body 220 of the first support 200 when the first support 200 moves; a third support 400, connected to the base support body 310 of the second support 300 to elastically support the second support 300; and a center of gravity shifting part 500, disposed on the base frame 110 and the second support 300 to control the shifting of the center of gravity of the first support 200.

[0046] like Figure 1 As shown, the chair body 100 includes: a base frame 110; a support column 120 supporting the bottom of the base frame 110; a plurality of support legs 130 disposed on the support column 120; and a plurality of wheel components 140 disposed on the plurality of support legs 130.

[0047] The leg support portion provided on the chair body 100 is configured to extend forward of the chair body 100, thereby supporting the user's leg area.

[0048] In this embodiment, the leg support includes: a load detection sensor disposed on the hip support body 210 or the base frame 110 to detect the user's load; and a drive unit disposed on the base frame 110 to extend the leg support member forward or return it to its original position. In this embodiment, the drive unit may include a known drive unit having a cylinder or a motor.

[0049] Furthermore, in this embodiment, the leg support can be controlled to operate only when the first support 200 tilts and moves toward the rear of the chair body 100.

[0050] The first support 200 is disposed on the base frame 110 to support the user's hips and back, and can move in response to the user's movements.

[0051] In this embodiment, as Figure 1As shown, the first support 200 includes: a hip support body 210, movably disposed on the base frame 110 to support the user's hips; a back support body 220, connected to the hip support body 210, supporting the user's back, and supported by the second support 300; a rotation guide member 230, rotatably disposed on the back support body 220 to guide the tilting movement of the back support body 220; and a support moving part 240, disposed on the back support body 220 in connection with the rotation guide member 230, for moving the lumbar support 221 disposed on the back support body 220.

[0052] The hip support body 210 of the first support part 200 is used to support the user's hips, such as Figure 1 As shown, it includes: a support plate 211; and a main body hole 212, which is disposed on the side wall of the hip support body 210, so that the guide roller 321 of the second support part 300 is supported on the side wall of the hip support body 210.

[0053] In this embodiment, the support plate 211 is used to directly support the user's buttocks, such as... Figure 10 As shown, it includes: a flat portion 211a; and a curved portion 211b, which is configured to protrude and bend from the end of the flat portion 211a toward the support leg 130.

[0054] In this embodiment, when the first support 200 tilts backward, the flat part 211a supporting the user's buttocks is placed on the connecting plate 320, so that the rotating guide member 230 can be smoothly combined with the guide arm 330.

[0055] In this embodiment, the flat portion 211a may be disposed in the region of the back support body 220 near the first support portion 200.

[0056] Furthermore, in this embodiment, as Figure 1 As shown, a pair of guide rollers 321 can be provided on the side wall of the hip support body 210, which has a main hole 212. In this embodiment, when the hip support body 210 is tilted, the pair of guide rollers 321 can support the hip support body 210, thereby allowing the hip support body 210 to tilt stably.

[0057] The back support body 220 of the first support part 200 is used to support the user's back, and can move together with the hip support body 210 when the user performs an action.

[0058] In this embodiment, as Figure 1 As shown, a lumbar support frame 221 for supporting the user's lumbar spine can be provided in the back support body 220. In this embodiment, as... Figure 7As shown, when the back support body 220 tilts backward, the lumbar support 221 moves backward by the support moving part 240, thereby minimizing the discomfort caused by the lumbar support 221 pressing on the back when the user is lying backward.

[0059] Furthermore, in this embodiment, such as Figure 5 As shown, the lumbar support 221 can be directly connected to the support moving part 240 for operation. That is, the connecting member 242 connecting the rotation guide member 230 and the pair of support rollers 241 is connected to the lumbar support 221, rather than the back support body 220, so that the lumbar support 221 can move in the front-back direction.

[0060] The rotation guide member 230 of the first support part 200 is rotatably coupled to the back support body 220, and when the first support part 200 tilts backward, it is supported by the guide arm 330 of the second support part 300, so that it can move together with the back support body 220.

[0061] In this embodiment, the rotating guide member 230 is provided with a plurality of gears that can mesh with the gears provided on the guide arm 330.

[0062] Furthermore, in this embodiment, the rotation guide member 230 can be connected to a plurality of support rollers 241 disposed on the back support body 220 via the connecting member 242.

[0063] like Figure 3 As shown, the support moving part 240 of the first support part 200 includes: a pair of support rollers 241, one of which is rotatably coupled to the upper end of the lumbar support 221, and the other is disposed at a higher position; a connecting member 242, connecting the pair of support rollers 241, the back support body 220, and the rotation guide member 230, so as to transmit the rotational force of the rotation guide member 230 to the lumbar support 221, thereby adjusting the degree of protrusion of the lumbar support 221.

[0064] In this embodiment, the rotational force of the rotation guide member 230 is transmitted to the connecting member 242, and as... Figure 3 As shown, the connecting member 242 is connected to the upper end of the lumbar support 221, thereby allowing the lumbar support 221 to move backward. Therefore, when the user is in a reclining position, the lumbar support 221 hardly protrudes in front of the back support body 220, thus preventing the user's back from being disturbed by the lumbar support 221, i.e., feeling discomfort due to pressure from the lumbar support 221.

[0065] The second support 300 is disposed on the base frame 110 and elastically supports the first support 200, and when the first support 200 moves, such as Figure 7As shown, some of the structures can move in correspondence with the back support body 220 of the first support part 200.

[0066] In this embodiment, as Figure 1 As shown, the second support part 300 includes: a base support body 310 supporting the back support body 220 of the first support part 200; a connecting plate 320, one side of which is attached to the base frame 110 and the other side of which is connected to the base support body 310; a guide arm 330 disposed on the connecting plate 320 to guide the movement of the base support body 310 and the back support body 220; a first elastic support part 340 disposed on the base support body 310 to elastically support the back support body 220; and a head support part 350 disposed on the base support body 310 to support the user's head.

[0067] like Figure 6 As shown, the base support body 310 of the second support part 300 can tilt backward together with the back support body 220.

[0068] In the connecting plate 320 of the second support part 300, one side is combined with the base frame 110, and the other side is provided with a base support body 310 that can tilt backward.

[0069] In this embodiment, the connecting plate 320 is directly connected to the base support body 310. The base support body 310 is configured to have its own elasticity, so that it can tilt backward. It can also be connected to the back support body 220 by using the guide arm 330 as a connecting medium.

[0070] Furthermore, in this embodiment, such as Figure 2 As shown, a gear is provided at the bottom of the connecting plate 320, which meshes with the drive gear 530 of the center of gravity shifting unit 500. As a result, when the center of gravity shifts and the drive gear 530 actuates, the seat body 100 can move backward, as... Figure 9 As shown. In this embodiment, the chair body 100 can also be configured to maintain its position while moving the rest of the structure.

[0071] Furthermore, in this embodiment, as Figure 1 and Figure 2As shown, the connecting plate 321 may also be provided with a guide roller 321. In this embodiment, the guide roller 321 is rotatably disposed on the side of the connecting plate 320, and can stably and smoothly support the hip support body 210 when the first support part 200 tilts backward or returns to its original position. That is, in this embodiment, the guide roller 321 contacts the area of ​​the hip support body 210 provided with the body hole 212, thereby supporting the hip support body 210. In this embodiment, a pair of guide rollers 321 may be spaced apart on the side of the base frame 110.

[0072] The guide arm 330 of the second support part 300 is disposed on the connecting plate 320. When the first support part 200 tilts backward, it guides the movement of the rotating guide member 230 and also guides the base support body 310 to tilt backward.

[0073] In this embodiment, the guide arms 330 can be respectively disposed on both sides of the connecting plate 320, and can also be provided with gears that mesh with the rotating guide member 230.

[0074] like Figure 3 As shown, the first elastic support portion 340 of the second support portion 300 is disposed on the base support body 310, and can elastically support the inclined back support body 220.

[0075] In this embodiment, as Figure 3 As shown, the first elastic support 340 includes: a first support block 341 disposed on the base support body 310; a first elastic bracket 342 rotatably coupled to the first support block 341; a first support ball 343 disposed on the first elastic bracket 342 to support the back support body 220; and a first spring member 344, one side of which is disposed on the base support body 310 and the other side is connected to the first elastic bracket 342 to support the first elastic bracket 342.

[0076] In this embodiment, as Figure 7 As shown by the dashed line, before the back support body 220 tilts backward, the first support ball 343 of the first elastic support portion 340 is separated from the back support body 220. In this state, when a user's load is applied to the back support body 220, the back support body 220 tilts backward, and when a load is continuously applied to the back support body 220, the elastic spring 344 contracts while the back support body 220 contacts the first support ball 343. When the load continues to be applied to the back support body 220, the first support ball 343 also contacts the base support body 310, causing the back support body 220 and the base support body 310 to tilt backward together, thus becoming... Figure 7 The solid line indicates the state of the second support portion 300. In this state, the second elastic spring 344 of the second support portion 300 also contracts.

[0077] like Figure 1 As shown, the head support 350 of the second support 300 is disposed on the upper part of the base support body 310, thereby supporting the user's head or neck.

[0078] like Figure 2 As shown, the third support portion 400 is used to elastically support the second support portion 300, and includes: a support plate 410, which is coupled to the connecting plate 320; and a second elastic support portion 420, one side of which is coupled to the support plate 410 and the other side of which is coupled to the base support body 310 to elastically support the base support body 310.

[0079] In this embodiment, as Figure 1 As shown, the second elastic support 420 includes: a second support block 421 disposed on the support plate 211; a second elastic bracket 422 rotatably coupled to the second support block 421; a second support ball 423 disposed on the second elastic bracket 422 to support the back support body 220; and a second elastic spring 424, one side of which is disposed on the base support body and the other side is connected to the second elastic bracket 422.

[0080] When the user leans back or performs other actions that cause the chair's center of gravity to shift, the center of gravity shifting unit 500 can adjust the chair's center of gravity according to the shifting center of gravity.

[0081] In this embodiment, as Figure 8 As shown, the center of gravity moving part 500 includes: a first pressure sensor 510, disposed on the connecting plate 320 to detect the pressure applied to the connecting plate 320; a second pressure sensor 550, disposed on the connecting plate 320 separately from the first pressure sensor 510, to detect the pressure applied to the connecting plate 320; and a drive gear 530, rotatably disposed on the base frame 110, and meshing with a gear disposed at the bottom of the connecting plate 320 to move the second support part 300.

[0082] In this embodiment, as Figure 8 As shown, the first pressure sensor 510 is disposed between a guide roller 321 and a guide arm 330, and the second pressure sensor 520 can be disposed between a pair of guide rollers 321.

[0083] In this embodiment, the drive gear 530 can be rotated by a drive unit, such as a drive motor, connected to the base frame 110.

[0084] Figure 9 The chair body 100 is shown to move, but it is not limited to this; the second support 300 can also be configured to move.

[0085] Figure 11This is a schematic side view of a chair according to another embodiment of the invention. Figure 12 It is a general overview Figure 11 The diagram shows the back support body and base support body tilting backward while the hip support body and connecting plate move forward. Figure 13 It is shown in magnification Figure 11 The diagram shows the base roller area.

[0086] like Figure 11 As shown, the chair 1a according to this embodiment differs from the above embodiment in that, while simplifying the structure, it moves the center of gravity through a mechanical mechanism when tilted to ensure safety.

[0087] Chair body 100a Figure 11 As shown, an upwardly protruding base support arm 150 is provided at the rear end of the base frame 110a, and the base roller 160 is rotatably coupled to the upper part of the base support arm 150.

[0088] In this embodiment, the structure connecting the base roller 160 and the roller member 360 to the connecting part can serve as an anti-detachment function to prevent the base support body 310 from detaching when it tilts. In addition, due to the rolling friction between the base support body 310 and the base roller 160, the base support body 310 can tilt naturally.

[0089] In this embodiment, as Figure 12 As shown, multiple base support rollers 170 are spaced apart on the upper part of the base frame 110, thereby guiding the connecting plate 320 to move in the front and back directions.

[0090] As described above, a roller member 360 may be provided on the base support body 310 of the second support parts 300, 300a.

[0091] like Figure 14 As shown, the lumbar support 221 in this embodiment and the above embodiments can be configured such that most of it is located on the rear side of the back support body 220.

[0092] Figure 14 This is a perspective view of a chair according to an embodiment of the present invention. Figure 15 yes Figure 1 3D view of the back Figure 16 yes Figure 1 The right view, Figure 17 yes Figure 1 Rear view, Figure 18 It is shown Figure 1 A three-dimensional view of the main parts. Figure 19 yes Figure 18 The left view.

[0093] also, Figure 20It is shown Figure 18 The diagram shows a three-dimensional view of the first support unit and the lumbar support portion. Figure 21 yes Figure 20 Main view, Figure 22 It is shown in magnification Figure 20 The first elastic support portion is shown in a perspective view. Figure 23 It is shown Figure 18 The three-dimensional view of the second support unit shown. Figure 24 yes Figure 23 The right view, Figure 25 yes Figure 23 An exploded perspective view of the stop shown.

[0094] further, Figure 26 It is shown Figure 23 The diagram shown is a perspective view of the structure excluding the second hip support body. Figure 27 yes Figure 26 Top view, Figure 28 It is shown Figure 26 The diagram shown is a three-dimensional representation of the structure excluding the second and third levers. Figure 29 It is shown Figure 28 The exploded perspective view shown is of the second hip support frame separated from the base frame. Figure 30 This is a usage state diagram of this embodiment, a three-dimensional view showing the user sitting in a chair. Figure 31 It is shown Figure 30 The image shown is a 3D representation of the user lying backwards.

[0095] As shown in the accompanying drawings, the chair 1b according to this embodiment includes: a chair body 1000, on which a base frame 1100 is provided; a first support unit 2000, disposed on the base frame 1100 to support the user's buttocks and back; a second support unit 3000, disposed on the base frame 1100 to support the first support unit 2000; a lumbar support portion 4000, a first back support portion 2200 disposed on the first support unit 2000 to support the user's lumbar spine; and a lever portion 5000, disposed on the chair body 1000 and the second support unit 3000.

[0096] like Figure 15As shown, the chair body 1000 includes: a base frame 1100; a support column 1200 supporting the bottom of the base frame 1100; multiple support legs 1300 disposed on the support column 1200; multiple wheel components 1400 disposed on the multiple support legs 1300; a base support arm 1500 disposed on the rear side of the base frame 1100, and connected to the second back support frame 3210 of the second support unit 3000 and the lumbar connecting rod 4300 of the lumbar support part 4000; and a body elastic support part 1600 disposed on... The base frame 1100 elastically supports the movement of the second hip support frame 3120 of the second support unit 3000; the curved frame 1700 is disposed on the upper part of the base frame 1100; a plurality of body support rollers 1800 are coupled to the curved frame 1700 to support the side walls of the second hip support frame 3120; and the leg support 1900 is coupled to the front side of the base frame 1100, and rises through the second hip support frame 3120 when the second hip support frame 3120 moves forward, thereby supporting the user's feet.

[0097] In this embodiment, the main body elastic support 1600 is used to guide the second hip support frame 3120 to move along the length of the base frame, such as... Figure 15 As shown, it includes: a main body elastic support body 1610, which is disposed on the base frame 1100; a main body elastic support shaft 1620, one end of which is connected to the main body elastic support body 1610; and a main body spring 1630, which is connected to the main body elastic support shaft 1620.

[0098] The first support unit 2000 is used to directly support the user's back and buttocks area, including: a first buttocks support 2100, disposed on the upper part of the base frame 1100 to support the area of ​​the second support unit 3000 used to support the user's buttocks; a first back support 2200, disposed connected to the first buttocks support 2100 to support the user's back; and a first elastic support 2300, disposed on the first back support 2200, which is elastically supported by the second elastic unit 3000 in the area corresponding to the first back support 2200 when the first back support 2200 tilts backward.

[0099] The first hip support portion 2100 of the first support unit 2000 is used to directly support the user's hips, such as Figure 20As shown, it includes: a first hip support body 2110; a first support arm 2120 disposed on the rear side of the first hip support body 2110; a lumbar support shaft 2130 disposed in the area of ​​the first hip support body 2110 where the first support arm 2120 is disposed, to support the lumbar support portion 4000; a disengagement prevention body 2140 disposed on the side wall of the first hip support body 2110, and engaging the stop roller 3350 of the support stop portion 3300; a disengagement prevention cover 2150 detachably coupled to the disengagement prevention body 2140 to cover one side of the prevention hole 2141 disposed in the disengagement prevention body 2140; and a first spring 2160 coupled to the lumbar support shaft 2130 to elastically support the first back support frame 2210.

[0100] In this embodiment, the bottom of the first hip support body 2110 can be supported on... Figure 23 The upper part of the second hip support body 3110 shown can be engaged and supported by the stop roller 3350 of the stop part 3300 to prevent detachment.

[0101] like Figure 20 As shown, the first back support portion 2200 of the first support unit 2000 is rotatably coupled to the lumbar support shaft 2130.

[0102] In this embodiment, as Figure 20 As shown, the first back support 2200 includes: a first back support frame 2210, rotatably coupled to the lumbar support shaft 2130; and a first back support body 2220, coupled to the first back support frame 2210.

[0103] In this embodiment, as Figure 22 As shown, the first back support frame 2210 may be provided with a first lumbar protrusion hole.

[0104] In this embodiment, as Figure 1 As shown, the first back support body 2220 may be provided with a second lumbar protrusion hole. In this embodiment, the first lumbar protrusion hole 2211 and the second lumbar protrusion hole 2221 allow the lumbar support portion 4000 of the lumbar support 4100 to move along the front-back direction of the first back support body and can communicate with each other.

[0105] like Figure 22 As shown, the first elastic support portion 2300 of the first support unit 2000 is combined with the rear side of the first back support frame 2210, so that when the first back support frame 2210 tilts backward, the first back support body 2220 can be stably supported on the second back support body.

[0106] In this embodiment, as Figure 22As shown, the first elastic support portion 2300 includes: a first elastic support shaft 2310, which is coupled to the upper rear side of the first back support frame 2210; a first elastic support body 2330, which is rotatably coupled to the first elastic support shaft 2310; a first elastic spring 2330, one side of which is coupled to the first elastic support shaft 2310 and the other side of which supports the inner side of the first elastic support body 2320; and a first elastic support roller 2340, which is disposed at the lower end of the first elastic support body 2320.

[0107] In this embodiment, when the first back support 2200 tilts towards the second back support 3200 and contacts the second back support frame 3210, it is combined with Figure 22 The area of ​​the first elastic support body 2320 of the first elastic support roller 2340 shown is moved closer to the first back support frame 2210, so that the first back support portion 2200 can be elastically supported.

[0108] The second support unit 3000 is disposed on the base frame 1100 to support the first support part. When the first back support part 2200 tilts backward, the second support unit 3000 moves forward, causing the center of gravity to move forward, thereby preventing the chair body 1000 from being overturned.

[0109] In this embodiment, as Figure 26 As shown, the second support unit 3000 includes: a second hip support 3100, which is movably supported on the base frame 1100 and combined with the first hip support 2100; a second back support 3200, which is rotatably combined with the chair body 1000 and connected to the second hip support 3100; and a stop 3300, which is disposed on the second hip support 3100 to restrict the movement of the second hip support 3100.

[0110] like Figure 25 As shown, the second hip support portion 3100 of the second support unit 3000 includes: a second hip support body 3110; and a second hip support frame 3120, which is detachably coupled to the bottom of the hip support body and movably coupled along the front-rear direction of the base frame 1100.

[0111] In this embodiment, as Figure 25 As shown, receiving grooves 3111 are respectively provided on the two side walls of the second hip support body 3110, and the stop part 3300 is detachably connected to the receiving groove 3111.

[0112] In this embodiment, as Figure 26As shown, a plurality of first connecting pieces 3121 may be spaced apart on the upper part of the second hip support frame 3120. In this embodiment, the plurality of first connecting pieces 3121 can be detachably connected to the bottom of the second hip support body 3110 using screws or bolts.

[0113] In this embodiment, as Figure 29 As shown, the second hip support frame 3120 may be provided with a movable guide hole 3122. In this embodiment, the movable guide hole 3122 may be provided along the length direction of the second hip support frame 3120, and a pair of movable guide holes 3122 may be spaced apart. In this embodiment, as... Figure 28 As shown, the main body elastic support portion 1600 can be exposed above the moving guide hole 3122.

[0114] In this embodiment, as Figure 29 As shown, a pair of second connecting pieces 3123 may be spaced apart on the rear side of the second hip support frame 3120. In this embodiment, as... Figure 26 As shown, the second connecting piece 3123 can support the rear end of the main body elastic support shaft 1620. In this embodiment, when the second hip support frame 3120 is in the position... Figure 26 When moving forward with reference to the reference, the body elastic support shaft 1620 can expose the second hip support frame 3120 to the rear side of the second connecting piece 3123 by the movement distance.

[0115] The second back support portion 3200 of the second support unit 3000 is as follows: Figure 16 As shown, one side is rotatably connected to the base support arm 1500, and the other side is rotatably connected to the second hip support frame 3120. When the first back support 2200 tilts backward, it can provide the second hip support frame 3120 with the power to move forward.

[0116] In this embodiment, as Figure 26 As shown, the second back support 3200 includes: a second back support frame 3210, the lower part of which is rotatably coupled to the base support arm 1500; and a head bracket 3220, which is disposed at the upper end of the second back support frame 3210.

[0117] In this embodiment, as Figure 28 As shown, a frame connecting rod 3211, rotatably coupled to the second hip support frame 3120, can be provided at the lower end of the second back support frame 3210. In this embodiment, as... Figure 28As shown, the second back support frame 3210 is provided with a first hole 3212 and a second hole 3213. The lumbar connecting rod 4300 of the lumbar support part 4000 can be introduced into the first hole 3212, and the lumbar support cover 4200 of the lumbar support part 4000 can be introduced into the second hole 3213. Figure 31 As shown, the lumbar support 4200 introduced into the second hole 3213 can protrude to the rear side of the second back support frame 3210.

[0118] Furthermore, in this embodiment, such as Figure 28 As shown, a sliding guide hole 3214 may be provided at the lower part of the second back support frame 3210 so that the lower part of the second back support frame 3210 can slide with the base support arm 1500 as the reference axis.

[0119] like Figure 25 As shown, the stop part 3300 of the second support unit 3000 is provided on the second hip support body 3110 and is locked and supported by the anti-disengagement hole 2141 of the disengagement prevention body 2140, thereby preventing the second hip support body 3110 from disengaging.

[0120] In this embodiment, as Figure 25 As shown, the stop part 3300 includes: a stop body 3310, which is detachably connected to the receiving groove 3111 of the second hip support body 3110 by screws or bolts; a stop shaft 3320, whose two ends are connected to the inner wall of the stop body 3310; a stop spring 3330, which is telescopically connected to the stop shaft 3320; a moving block 3340, which is movably connected to the stop shaft 3320 and is elastically supported by the stop spring 3330; and a stop roller 3350, which is rotatably connected to the moving block 3340 and is snapped and supported by the anti-disengagement hole 2141 of the disengagement prevention body 2140.

[0121] In this embodiment, as Figure 25 As shown, a pair of movable blocks 3340 are spaced apart, and the pair of movable blocks 3340 can be elastically supported by a stop spring 3330.

[0122] like Figure 20 As shown, the lumbar support 4000 can be provided on the first back support 2200 to support the user's lumbar spine.

[0123] In this embodiment, as Figure 1 As shown, the lumbar support 4000 includes: a plurality of lumbar supports 4100, configured to protrude forward toward the front of the first back support body 2220; and a lumbar shield 4200, disposed on the rear side of the first back support frame 2210, supporting the plurality of lumbar supports 4100 to prevent them from detaching, and, when the first back support frame 2210 tilts backward, as... Figure 31As shown, it protrudes to the rear of the second back support frame 3210; and the lumbar connecting rod 4300, as... Figure 20 As shown, it is located at the lower part of the lumbar support 4200 and is rotatably connected to the first support arm 2120.

[0124] In this embodiment, as Figure 20 As shown, a connecting rod hole 4310 is provided in the lumbar connecting rod 4300, and the lumbar connecting rod 4300 can be connected to the first support arm through the connecting rod hole 4310. In addition, in this embodiment, the connecting rod hole 4310 is configured to be curved, thereby guiding the lumbar connecting rod 4300 to rotate in a semi-elliptical direction.

[0125] The lever portion 5000 includes: a first lever 5100, disposed in the first hip support portion 2100, such as... Figure 2 As shown; and the second lever 5200 and the third lever 5300, which are disposed on the second hip support 3100, as... Figure 27 As shown.

[0126] Explanation of reference numerals in the attached figures:

[0127] 1, 1a, 1b: chair;

[0128] 100, 100a: Chair body; 110, 110a: Base frame;

[0129] 111: Flat section; 112: Curved section;

[0130] 120: Support column; 130: Support leg;

[0131] 140: Wheel component; 150: Base support arm;

[0132] 160: Base roller; 170: Base support roller;

[0133] 200, 200a: First support section; 210: Main hip support body;

[0134] 211: Support plate; 211a: Flat section;

[0135] 211b: Bend; 212: Main body hole;

[0136] 220: Back support main body; 221: Lumbar spine support;

[0137] 230: Rotary guide component; 240: Support moving part;

[0138] 241: Support roller; 242: Connecting component;

[0139] 300: Second support section; 310: Main body of base support;

[0140] 320: Connecting plate; 321: Guide roller;

[0141] 330: Guide arm; 340: First elastic support section;

[0142] 341: First support block; 342: First elastic bracket;

[0143] 343: First supporting ball; 344: First elastic spring;

[0144] 350: Head support section; 360: Roller component;

[0145] 400: Third support section; 410: Support plate;

[0146] 420: Second elastic support part; 421: Second support block;

[0147] 422: Second elastic support; 423: Second support ball;

[0148] 424: Second elastic spring; 500: Center of gravity;

[0149] 510: First pressure sensor; 520: Second pressure sensor;

[0150] 530: Drive gear;

[0151] 1000: Chair body; 1100: Base frame;

[0152] 1200: Support column; 1300: Support leg;

[0153] 1400: Wheel component; 1500: Base support arm;

[0154] 1600: Elastic support part of the main body; 1610: Elastic support main body;

[0155] 1620: Body elastic support shaft; 1630: Body spring;

[0156] 1700: Bending frame; 1800: Body support roller;

[0157] 1900: Leg support section; 2000: First support unit;

[0158] 2100: First hip support section; 2110: First hip support main body;

[0159] 2120: First support arm; 2130: Lumbar spine support axis;

[0160] 2140: Detachment prevention body; 2141: Prevention hole;

[0161] 2150: Detachment protection cover; 2160: First spring;

[0162] 2200: First back support section; 2210: First back support frame;

[0163] 2211: First lumbar vertebral foramen; 2220: First main back support structure;

[0164] 2221: Second lumbar vertebral foramen; 2300: First elastic support section;

[0165] 2310: First elastic support shaft; 2320: First elastic support body;

[0166] 2330: First elastic spring; 2340: First elastic support roller;

[0167] 3000: Second support unit; 3100: Second hip support;

[0168] 3110: Second hip support body; 3111: Receiving groove;

[0169] 3120: Second hip support frame; 3121: First connecting piece;

[0170] 3122: Moving guide hole; 3123: Second mating piece;

[0171] 3200: Second back support; 3210: Second back support frame;

[0172] 3211: Frame connecting rod; 3212: First hole;

[0173] 3213: Second hole; 3214: Sliding guide hole;

[0174] 3220: Head support; 3300: Stop;

[0175] 3310: Stop body; 3320: Stop shaft;

[0176] 3330: Stop spring; 3340: Moving block;

[0177] 3350: Stop roller; 4000: Lumbar support section;

[0178] 4100: Lumbar support; 4200: Lumbar support shield;

[0179] 4300: Lumbar spine connecting rod; 4310: Connecting rod hole;

[0180] 5000: Lever section; 5100: First lever;

[0181] 5200: Second leverage; 5300: Third leverage.

[0182] Industrial applicability

[0183] Embodiments of the present invention may provide a chair that can move in response to the user’s actions and automatically adjust its posture angle from when the user is focused on working to when they can lie down and rest.

Claims

1. A chair comprising: The chair body is equipped with a base frame; The first support is provided on the base frame to support the user's hips and back, and moves in response to the user's movements; as well as A second support portion is disposed on the base frame to support the first support portion. When the first support portion moves, a corresponding movement occurs in the back support body of the first support portion. The second support part supports the rolling motion of the hip support body of the first support part while elastically supporting the back support body of the first support part.

2. The chair according to claim 1, wherein, The first support portion includes: The hip support body is movably mounted on the base frame to support the user's hips; The back support body is configured to connect to the hip support body to support the user's back, and is supported by the second support portion; and A rotating guide member is rotatably disposed on the back support body and guided by a guide arm disposed on the second support part, thereby guiding the rotation of the first support part.

3. The chair according to claim 1, wherein, The second support includes: The base supports the main body, which in turn supports the back support body; A connecting plate, one side of which is attached to the base frame and the other side of which is attached to the base support body; A guide arm, disposed on the connecting plate, guides the movement of the back support body; and A first elastic support portion is disposed on the base support body to elastically support the back support body.

4. The chair according to claim 1, wherein, The chair body also includes: A leg support, movably mounted on the base frame to support the user's legs; and A center of gravity shifting unit is provided on the second support unit to control the shifting of the center of gravity of the first support unit.

5. A chair comprising: The chair body includes a base frame and a base support arm disposed on the base frame; The first support part is separated from the base frame and supports the user's hips and back, and moves in response to the user's movements; as well as The second support portion is disposed between the base frame and the first support portion to support the first support portion. When the first support portion moves, the corresponding back support body of the first support portion moves accordingly. When the base support body of the back support body and the second support body tilts backward, the first support body and the second support body move forward.

6. The chair according to claim 5, wherein, The chair body also includes: A base roller, rotatably mounted on the base support arm; and At least one base support roller is rotatably disposed on the base frame to support the connecting plate of the second support portion. The second support also includes: A roller component is disposed on the base support body and connected to the base roller, thereby preventing the base roller from detaching from the base support body.

7. The chair according to claim 1 or 5, further comprising: A lumbar support frame, installed on the back support body, supports the user's back. When the back support body tilts backward, the lumbar spine bracket moves backward to prevent interference with the user's back.

8. A chair comprising: The chair body is equipped with a base frame; A first support unit is disposed on the base frame to support the user's hips and back; as well as A second support unit is disposed on the base frame to support the first support portion. When the first support unit tilts backward, the area in the second support unit that supports the user's hips moves forward.

9. The chair according to claim 8, wherein, The first support unit includes: A first hip support is disposed on the upper part of the base frame to support the area in the second support unit used to support the user's hips; A first back support portion is configured to connect to a first hip support portion to support the user's back; and A first elastic support portion is disposed on the first back support portion, and when the first back support portion tilts backward, it is elastically supported by the second support unit in the area corresponding to the first back support portion.

10. The chair according to claim 9, wherein, The second support unit includes: The second hip support is movably supported on the base frame and is combined with the first hip support; The second back support is rotatably coupled to the chair body and connected to the second hip support; and A stop is provided on the second hip support to restrict the movement of the second hip support.

11. The chair according to claim 10, wherein, The second hip support includes: The second hip support body, wherein the first hip support body of the first hip support portion is detachably attached to the upper part of the second hip support body; and The second hip support frame is movably coupled along the front-rear direction of the base frame, and the second hip support body is detachably coupled to the second hip support frame. The chair body also includes: The main body elastic support is disposed on the base frame to elastically support the movement of the second hip support frame.

12. The chair according to claim 8, further comprising: A lumbar support portion is provided in the first back support portion of the first support unit to support the user's lumbar spine.

Images