Human support device

Abstract

The present invention provides a human body support device that can distribute the load from the human body and allows the upper and lower body to be tilted backward at a selectable angle in a stable manner. [Solution] This human body support device 1E comprises a device support base provided with an extendable part 23 that extends and retracts vertically and a base 22 that is placed on the floor surface F, and a human body support base including a cushion member 33 that supports the human body, an upper frame lower body support part 323 attached to the part of the cushion member 33 that supports the buttocks and thighs of the human body HA, and a main frame part 321 attached to the part that supports the back of the human body HA, wherein the extendable part 23 is directly or indirectly attached to the upper frame lower body support part 323 or the main frame part 321.

Description

Technical Field

[0001] The present invention relates to a human body support device that supports the human body when working, studying, etc.

Background Art

[0002] Humans have a skeletal structure suitable for standing and walking, but when working, studying, etc., they do it while sitting on a chair with their waists bent. However, sitting for a long time places a large burden on the waist and is likely to cause diseases such as low back pain and herniated discs. On the other hand, when working or studying standing up, a large load that makes long-term work difficult is applied to the soles of the feet due to the weight of the human body, which becomes a large burden. Therefore, various forms of chairs and human body support devices have been proposed conventionally to reduce the large local burden on the waist or soles of the feet. The human body support device is a device that supports the human body when working, studying, etc., and includes not only chairs for sitting but also those that cannot be said to be for sitting.

[0003] For example, in Patent Document 1, a human body support device (body holding structure) is proposed in which a stand part (reference numeral 16c in FIG. 6 thereof) is used as a support column, and all the contact parts where the upper body, lower body, and soles of the feet contact are planar, and the upper body and lower body can be independently tilted at an angle to the rear side. This human body support device states that by allowing the lower body to lean against the lower body contact part, the load by the human body is dispersed to the lower body and the soles of the feet, thereby eliminating the adverse effects on the waist.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, the human body support device described in Patent Document 1 is stable only at a specific angle, with the stand and lower body contact portion in contact with the floor (see Figure 6). It is not possible to change the angle of the lower body to stand up from that angle, nor is it practical from a mechanical standpoint to change the angle of the lower body to lie down from that angle.

[0006] The present invention has been made in view of the above circumstances, and its purpose is to provide a human body support device that reduces the burden on the lower back when maintaining a posture for a long period of time, by enabling the load from the human body to be distributed among the upper body, lower body and soles of the feet (or upper body and lower body), and by allowing the upper body and lower body to be tilted backward individually at a selectable angle. [Means for solving the problem]

[0007] To achieve the above objective, the human body support device of the present invention comprises a device support base provided with an extendable part that extends and retracts vertically and a base that is placed directly on the floor or via casters; a human body support base including a cushion member that supports the human body, an upper part of the lower body support frame attached to the part of the cushion member that supports the human body from the buttocks to the thighs and a main part of the frame attached to the part that supports the human body's back; a first angle adjustment mechanism for adjusting the angle of the main part of the frame with respect to the upper part of the lower body support frame; and a second angle adjustment mechanism for adjusting the angle of the upper part of the lower body support frame with respect to the floor, wherein the extendable part is directly or indirectly attached to the upper part of the lower body support frame or the main part of the frame.

[0008] The second angle adjustment mechanism includes an intermediate member fixed to the telescopic portion, and a member fixed to the intermediate member and the upper part of the lower frame support, which is rotatable and can be stopped.

[0009] The second angle adjustment mechanism comprises an intermediate member fixed to the telescopic part, a telescopic part attached to the intermediate member that extends and retracts to raise and lower the main part of the frame or the upper part of the lower frame support, and a rotating member that rotates when the telescopic part attached to the intermediate member extends and retracts, and is attached to the upper part of the lower frame support or the intermediate member.

[0010] The device comprises means for measuring at least two angles, such as the angle between the floor and the main part of the frame, the angle between the upper part of the frame's lower body support and the main part of the frame, or the angle between the floor and the upper part of the frame's lower body support; means for calculating the pressure applied to the intervertebral disc, or the relative pressure between the pressure applied to the intervertebral disc when standing upright, using a function or formula from any two of the measured angles, or a variable combining any two of the angles; and display means for displaying the results of the calculation.

[0011] The frame is equipped with a small workbench for firmly supporting work tools, which is fixed to the main part of the frame, fixed in a rotatable manner, or attached in a detachable manner.

[0012] Furthermore, the human body support device comprises a device support base having an operating member and a bearing member attached to the upper part, an extendable part that extends and retracts vertically by operation of the operating member, and a base that is placed on the floor surface; a human body support base having at least a frame member having a shaft member that is inserted through the bearing member of the extendable part and rotatably attached, and a frame main part fixed thereto, and a cushion member that contacts the frame member on the back side and can contact at least the upper and lower body of a human body on the front side, and is formed to support the human body; and casters attached to the frame member, and the angle of the frame main part with respect to the floor surface may change as the casters rotate and move in accordance with the extension and retraction of the extendable part.

[0013] Furthermore, the human body support device comprises a device support stand having an operating member and a bearing member attached to the upper part, an extendable part that extends and retracts vertically by operation of the operating member, and a base that is placed on the floor surface, and a frame member having at least a shaft member that is inserted through the bearing member of the extendable part and rotatably attached, and a frame main part fixed thereto, and a cushion member that is in contact with the frame member on the back side and can be in contact with at least the upper and lower body of a human body on the front side, and is formed to support the human body, wherein the frame member further has a lower body support upper part of the frame that is rotatably attached to the frame main part, and a second operating member that can operate the angle between the frame main part and the lower body support upper part of the frame, and the base is located above the floor surface and has a roller that is in contact with the lower body support upper part of the frame and rotatable, and the angle of the frame main part with respect to the floor surface may change as the lower body support upper part of the frame moves in response to the extension and retraction of the extendable part or operation of the second operating member. [Effects of the Invention]

[0014] According to the human body support device of the present invention, the load from the human body can be distributed among the upper body, lower body, and soles of the feet (or upper body and lower body), and the upper body and lower body can be tilted backward individually at a selectable angle in a stable manner. [Brief explanation of the drawing]

[0015] [Figure 1] This is a side view showing an example of a human body support device according to an embodiment of the present invention. [Figure 2] This is a side view showing another example of the same human support device. [Figure 3] This is a side view showing a modified example of Figure 2 of the same human support device. [Figure 4] This is a side view showing yet another example of the same human support device. [Figure 5] This is a side view showing yet another example of the same human body support device (an example different from Figure 4). [Figure 6]This shows an enlarged view of a part of the telescopic section of the above-described human body support device together with the shaft member, where (a) is a side view and (b) is a rear view. [Figure 7] This is a side view showing an enlarged example of the second operating member of the above-described human body support device. [Figure 8] This is a side view showing a modified example of FIG. 5 of the above-described human body support device. [Figure 9] This is a side view showing an example in which a small workbench is attached to the above-described human body support device. [Figure 10] This is a side view showing an example of a human body support device provided with a telescopic section below the upper part of the frame lower body support. [Figure 11] This is a view showing an enlarged example of the intermediate member and the fourth operating section when viewed from the front of the human body. [Figure 12] This is a graph showing the relationship between the pressure and the angle related to the intervertebral disc, where (a) is a graph corresponding to Table 1 and (b) is a graph corresponding to Table 2. [Figure 13] This is a side view showing an example of a human body support device provided with a telescopic section below the upper part of the frame lower body support and further provided with a telescopic section attached to the main part of the frame. [Figure 14] This is a side view showing an example of a human body support device provided with a telescopic section below the upper part of the frame lower body support and further capable of changing the angle of the upper part of the frame lower body support with another telescopic section.

Embodiments for Carrying Out the Invention

[0016] Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. Each of the human body support devices 1A, 1B, 1C, 1D according to the embodiments of the present invention includes a device support base 2, a human body support base 3, and casters 4 as shown in FIGS. 1, 2, 3, 4, and 5. Note that among the human body support devices 1A, 1B, 1C, 1D, 1E, 1F, 1G, those corresponding parts are shown with the same reference numerals even if their specific shapes and the like are different. In each of the human body support devices 1A, 1B, 1C, 1D, 1E, 1F, 1G, the description may be omitted when the description of the same member is repeated.

[0017] The device support base 2 has an extendable portion 21 and a base portion 22. The base portion 22 is the part that rests on the floor surface F. The lower part of the extendable portion 21 is integrally formed with or firmly fixed to the base portion 22, and it contacts the floor surface F over a relatively wide area to stably fix the lower part of the extendable portion 21 in position. In the human body support devices 1A, 1B, and 1C, the base portion 22 is shaped so as not to hinder the retraction of the caster 4 when it moves back and approaches as described later, and in the human body support device 1D, it is located above the floor surface F and has a caster contact surface 22a that the caster 4 contacts. The device support base 2 can be equipped with casters with stoppers, or in some cases casters without stoppers, so that its position can be easily changed relative to the floor surface F. The floor surface F is the top surface of flooring, carpet, rug, carpet tiles, floor tiles, floor sheets, etc. in residences, offices, etc.

[0018] The specific form of the telescopic section 21 is not particularly limited, but can be as follows. That is, as shown in Figures 6(a) and (b), the telescopic section 21 can be made of a gas spring in which the upper member (rod) 211 of the telescopic section moves up and down relative to the lower member (cylinder tube) 212 of the telescopic section. Gas is sealed inside the telescopic section 21. A release pin 213 is provided at the top of the upper member 211 of the telescopic section, and when the release pin 213 is pressed down by the operating member 21a described later, the lock is released and the telescopic section 21 becomes extendable and retractable. In detail, when the release pin 213 is pressed down, the telescopic section 21 will extend if the load in the direction of gravity acting on the upper member 211 of the telescopic section is small, and will contract if it is large, and will maintain (lock) the length (height) at the time when the release pin 213 is finished to press down.

[0019] The telescopic section 21 has an operating member 21a and a bearing member 21b attached to its upper part. The operating member 21a extends and retracts the telescopic section 21 vertically when operated. The bearing member 21b supports the shaft member 31 of the human body support base 3, which will be described later, so that it can rotate. The specific structure of attaching the operating member 21a and the bearing member 21b to the telescopic section 21 is not particularly limited, but in Figures 6(a) and (b), the bearing member 21b is fixed to the upper part of the telescopic section 21, and the operating member 21a is attached to it. Note that in Figures 6(a) and (b), the front part of the bearing member 21b is shown as transparent so that the inside of the bearing member 21b can be seen.

[0020] The operating member 21a is a long, bendable piece that extends to the vicinity of the left or right end of the human body support base 3, where a gripping portion 21aa is provided so that a user leaning against the human body support base 3 can grasp it. The operating member 21a can be attached to the bearing member 21b so as to be pivotable with the vicinity of one end (the contact portion with the fulcrum forming portion 21ba formed as part of the bearing member 21b) as the fulcrum, with the gripping portion 21aa as the point of force application and the point of application located above the lock release pin 213 (see Figure 6(a)). When the user pushes down the operating member 21a, the lock release pin 213 is pressed down. If the fulcrum forming portion 21ba is installed midway between the point of application and the gripping portion 21aa, the lock release pin 213 will be pressed down when the user pushes up the operating member 21a. Note that although only part of the operating member 21a is shown in Figure 6(a), it extends in the direction towards the viewer. Furthermore, the pivot point forming section 21ba is omitted in Figure 6(b).

[0021] The bearing member 21b is capable of stably supporting the shaft member 31, which will be described later, and has a bearing hole 21bb through which the shaft member 31 passes.

[0022] The human body support stand 3 is formed to support the human body H by contacting at least the upper body HA (specifically the back) and the lower body HB of the human body H. In Figures 1 to 5 and later in Figures 8, 13, and 14, the human body support stand 3 is provided with a shaft member 31 and a frame member 32. The human body support stand 3 also usually has a cushion member 33. The cushion member 33 can contact at least the upper body HA and the lower body HB of the human body H on their front sides. In Figures 1 to 5 (and later in Figures 8, 10, 13, and 14), the dashed lines show how the human body H sinks slightly into the cushion member 33 due to its load. The cushion member 33 can also have bumps and grooves to correspond to the contours of the back of the upper body HA and the rear of the lower body HB. It is also possible to attach a pillow (not shown).

[0023] The shaft member 31 is elongated and is inserted through the bearing member 21b of the telescopic portion 21 of the device support base 2, and is rotatably attached to it. A stopper can also be provided to prevent excessive rotation of the human body support base 3 to the rear. The shaft member 31 can be, for example, cylindrical or cylindrical in shape.

[0024] The frame member 32 has at least a main frame portion 321. In the cases of Figures 1 to 5, 8, and 13, the main frame portion 321 is fixed to the shaft member 31. The main frame portion 321 can support the human body H via (or, in some cases, without) the cushion member 33. The position in which the main frame portion 321 is fixed to the shaft member 31 can be such that the main frame portion 321 does not easily rotate backward when the user places a large load on their upper body HA. In addition, the frame member 32 is fitted with casters 4 or rollers 4' or a fourth operating member 36, as will be described later.

[0025] The main frame portion 321 can be made to be approximately the same width as or slightly wider than the human body H when the human body H is in contact with the human body support base 3, and the top portion 321a can be approximately the same height as or slightly higher than the human body H. In addition, the back surface of the main frame portion 321 can be formed to be approximately straight in a side view.

[0026] Next, the configuration of the frame member 32 in each of the human body support devices 1A, 1B, 1C, and 1D other than those described above will be explained.

[0027] In the human body support device 1A, the frame member 32 has a main frame portion 321, a frame foot support portion 322, a frame lower body support portion 323, and a second operating member 326 (see Figure 1). The frame foot support portion 322 is capable of supporting the sole of the foot HC and is formed near the bottom portion 321b of the main frame portion 321. In addition, in the human body support device 1A, the caster 4 is attached to the bottom portion 321b of the frame lower body support portion 323. Note that the frame foot support portion 322 may be omitted in some cases.

[0028] In the human body support device 1B, the frame member 32 has a frame foot support section 322, a frame lower body support upper section 323, a frame lower body support lower section 324, a frame lower body support auxiliary section 325, and a second operating member 326, in addition to the frame main section 321 (see Figures 2 and 3). The frame foot support section 322 can support the sole of the foot HC, similar to that of the human body support device 1A, but is formed near the bottom of the frame lower body support lower section 324. In addition, in the human body support device 1B, the casters 4 are attached to the bottom section 321b of the frame main section 321 (see Figure 2) or the frame lower body support lower section 324 (see Figure 3). The frame foot support section 322 may be omitted in some cases.

[0029] The upper frame lower body support 323 is capable of supporting the thigh of the lower body HB and is rotatably attached to the main frame part 321.

[0030] The lower part 324 of the frame lower body support is capable of supporting the calf of the lower body HB and is rotatably attached to the upper part 323 of the frame lower body support.

[0031] The lower frame support auxiliary section 325 is rotatably attached to both the lower frame support lower section 324 and the main frame section 321. The lower frame support auxiliary section 325 is the same length as the upper frame support upper section 323 so that it is parallel to the upper frame support upper section 323 regardless of the angle between the main frame section 321 and the upper frame support upper section 323, and is attached to the main frame section 321 at a position lower than the mounting position of the upper frame support upper section 323 by the length of the lower frame support lower section 324.

[0032] The second operating member 326 can control the angle between the main frame portion 321 and the upper frame lower body support portion 323. The second operating member 326 can use a planetary gear mechanism as illustrated in Figure 7. In this case, the second operating member 326 has an internal gear 326a, a plurality of planetary gears 326b (three in Figure 7) meshing with the internal gear 326a inside it, a sun gear 326c meshing with the plurality of planetary gears 326b inside them, and a planetary carrier 326d that extracts the orbital motion of the plurality of planetary gears 326b. The internal gear 326a and the sun gear 326c are concentric. In Figure 7, parts of each component hidden by other components are shown with dashed lines, the planetary carrier 326d is assumed to be located at the innermost position, and parts of the planetary carrier 326d hidden by other components are shown with dashed lines with a short pitch. Furthermore, the second operating member 326 is not limited to one using a planetary gear mechanism; it can also be a handle or a lever. The second operating member 326 may also be provided in the human body support device 1A shown in Figure 1, allowing for the adjustment of the angle between the main frame portion 321 and the upper frame lower body support portion 323 in the human body support device 1A.

[0033] The internal gear 326a can be fixed to the main frame 321, the sun gear 326c can be fixed to the handle 326e that the user grips, and the planetary carrier 326d can be fixed to the upper frame lower support 323. When the user turns the handle 326e in a large direction with a small force, the upper frame lower support 323 rotates slowly with a large force.

[0034] In the human body support device 1C, the frame member 32 has casters 4 attached to the lower part of the frame lower body support 324, which will be described later. In addition to the main frame part 321, it also has a frame sole support part 322, a frame lower body support upper part 323, a frame lower body support lower part 324, a second operating member 326, and a third operating member 327 (see Figure 4). The frame sole support part 322 can support the sole of the foot HC, similar to that of the human body support device 1A, but is formed near the lower part of the frame lower body support lower part 324. Note that the frame sole support part 322 may be omitted in some cases.

[0035] The upper frame lower body support 323, the lower frame lower body support 324, and the second operating member 326 are the same as those of the human body support device 1B.

[0036] The third operating member 327 can control the angle between the upper frame lower support 323 and the lower frame lower support 324. The third operating member 327 can be the same as the second operating member 326 described above. For example, a planetary gear mechanism similar to the one shown in Figure 7 can be used. In this case, the part similar to the internal gear 326a is fixed to the upper frame lower support 323, the part similar to the sun gear 326c is fixed to the part similar to the handle 326e that the user grips, and the part similar to the planetary carrier 326d is fixed to the lower frame lower support 324.

[0037] In the human body support device 1D, the frame member 32 has casters 4 attached to the upper part 323 of the lower body support frame, which will be described later, and also has the upper part 323 of the lower body support frame and the second operating member 326 in addition to the main frame part 321 (see Figure 5).

[0038] The upper frame lower body support section 323 and the second operating member 326 are the same as those of the human body support device 1B.

[0039] In the human body support devices 1A, 1B, 1C, and 1D, the casters 4 are attached to the frame member 32 of the human body support base 3, as described above. The casters 4 have wheels, and by rotating in the direction in which the wheels contact the floor surface F (in the case of human body support device 1D, the caster contact surface 22a of the base 22 of the support base 2) and force is applied, they can move forward and away from the telescopic part 21 or backward and approach the telescopic part 21 with a small force. It is preferable to provide two or more casters 4, but in some cases one may be sufficient.

[0040] Next, a modified version of the human body support device 1D, the human body support device 1D', will be described. As shown in Figure 8, the human body support device 1D' does not have casters 4, but instead has rollers 4' located above the floor surface F of the base 22. The rollers 4' do not move in parallel with the position of their axes, and are rotatable in contact with the upper part 326 of the lower body support frame.

[0041] Each of the human body support devices 1A, 1B, 1C, 1D, and 1D' described above allows the user to tilt the main frame portion 321 of the human body support platform 3 backward, so that the load from the human body H is distributed between the upper body HA, the lower body HB, and the soles of the feet HC (or, in the case of human body support devices 1B and 1C where the frame foot support portion 322 is omitted, the load from the human body H is distributed between the upper body HA, the lower body HB, and the soles of the feet HC).

[0042] Furthermore, in each of the human body support devices 1A, 1B, 1C, 1D, and 1D', the user can operate the operating member 21a to extend or retract the telescopic part 21 of the device support base 2, causing the casters 4 to rotate and move according to the height of the telescopic part 21, thereby easily changing the angle of the main frame part 321 relative to the floor surface F. For example, the angle of the main frame part 321 relative to the floor surface F increases when the telescopic part 21 is extended, bringing it closer to an upright position, and decreases when the telescopic part 21 is retracted, bringing it closer to a lying position. This makes it easy to change the proportion in which the load from the human body H is distributed between the upper body HA, lower body HB, and soles of the feet HC (or, in the case of human body support devices 1B and 1C where the frame sole support part 322 is omitted, the upper body HA and lower body HB). For example, if the angle of the main frame part 321 relative to the floor surface F is small, the load on the upper body HA increases and the load on the soles of the feet HC or lower body HB decreases. Conversely, if the angle of the main frame portion 321 with respect to the floor surface F is large, the load on the upper body HA will decrease, and the load on the soles of the feet HC or the lower body HB will increase. The loads on the upper body HA and lower body HB can be absorbed to some extent by the cushioning member 33. The load on the soles of the feet HC can be absorbed to some extent by footwear provided separately, and can also be reduced by the friction of the cushioning member 33.

[0043] Here, in each of the human body support devices 1A, 1B, 1C, 1D, and 1D', regardless of the angle of the main frame portion 321 with respect to the floor surface F, the human body support base 3 is supported by the bearing member 21b of the device support base 2 via the shaft member 31, and in the human body support devices 1A, 1B, and 1C, it is supported by the floor surface F via the caster 4, in the human body support device 1D, it is supported by the caster contact surface 22a of the base portion 22 of the device support base 2, and in the human body support device 1D', it is supported by the roller 4', so that the upper body HA and lower body HB can be stably tilted backward at a selectable angle. In addition, in each of the human body support devices 1A, 1B, 1C, 1D, and 1D', the gripping portion 21aa of the operating member 21a is in roughly the same position for the user regardless of the angle of the human body support base 2, making it easy to operate the operating member 21a.

[0044] Furthermore, in the human body support device 1A, the angle of the lower body HB can be changed by operating the second operating member 326 to change the angle between the main frame 321 and the upper frame lower body support 323. In addition, the angle between the main frame 321 and the upper frame lower body support 323 can be changed by operating the telescopic part 23, which will be described later. The user's burden on the lower back is greatly reduced, which can reduce the risk of diseases such as lower back pain and herniated discs.

[0045] In the human body support device 1B, the angle between the main frame portion 321 and the upper frame lower body support portion 323 can be changed by operating the second operating member 326, thereby changing the angle of the lower body HB. In the human body support device 1B, the proportion of the load distributed by the human body H between the upper body HA, the lower body HB, and the soles of the feet HC (or, if the frame sole support portion 322 is omitted, the upper body HA and the lower body HB) can be easily and variedly changed. Furthermore, in the human body support device 1B, as described above, the angle between the main frame portion 321 and the upper frame lower body support portion 323 can be changed by operating the second operating member 326. Therefore, if the caster 4 is attached to the lower frame lower body support portion 324, the angle of the main frame portion 321 relative to the floor surface F can be changed by the rotation and movement of the caster 4 in response to the operation of the second operating member 326, similar to the operation of the operating member 21a. This makes it possible to fine-tune the angle of the upper body HA. Furthermore, in the human body support device 1B, if the angle between the main frame portion 321 and the upper frame portion supporting the lower body 323 is small (close to 0 degrees), the burden on the lower back can be reduced, thereby reducing the factors contributing to diseases such as lower back pain and herniated discs.

[0046] In the human body support device 1C, the angle of the upper body HA can be changed by operating the operating member 21a to change the angle of the main frame part 321, the angle of the thigh of the lower body HB can be changed by operating the second operating member 326 to change the angle between the main frame part 321 and the upper part of the lower body support frame 323, and the angle of the calf of the lower body HB can be changed by operating the third operating member 327 to change the angle between the upper part of the lower body support frame 323 and the lower part of the lower body support frame 324. In the human body support device 1C, the proportion in which the load from the human body H is distributed between the upper body HA, the lower body HB, and the soles of the feet HC (or, if the frame sole support part 322 is omitted, the upper body HA and the lower body HB) can be easily and varied further. Furthermore, in the human body support device 1C, the angle between the main frame 321 and the upper frame lower body support 323 can be changed by operating the second operating member 326 as described above, and the angle between the upper frame lower body support 323 and the lower frame lower body support 324 can be changed by operating the third operating member 327. Therefore, similar to the operation of the operating member 21a, the angle of the main frame 321 with respect to the floor surface F can be changed by the rotation and movement of the caster 4 in response to the operation of the second operating member 326 or the third operating member 327. This makes it possible to fine-tune the angle of the upper body HA. In addition, in the human body support device 1C, if the angle between the main frame 321 and the upper frame lower body support 323 is small (close to 0 degrees), the burden on the lower back can be reduced, thereby reducing the factors contributing to diseases such as lower back pain and herniated discs.

[0047] In the human body support devices 1D and 1D', similar to the human body support device 1B, the angle of the lower body HB can be changed by operating the second operating member 326 to change the angle between the main frame portion 321 and the upper frame lower body support portion 323. In the human body support devices 1D and 1D', despite having fewer components than the human body support device 1B, the proportion of the load distributed by the human body H between the upper body HA, lower body HB, and soles of the feet HC can be easily and diversely changed. Furthermore, in the human body support devices 1D and 1D', as described above, the angle between the main frame portion 321 and the upper frame lower body support portion 323 can be changed by operating the second operating member 326, so similar to the operation of the operating member 21a, the angle of the main frame portion 321 with respect to the floor surface F can be changed by the movement of the upper frame lower body support portion 323 in response to the operation of the second operating member 326 (specifically, in the human body support device 1D, the caster 4 rotates and moves). This makes it possible to fine-tune the angle of the upper body HA. Furthermore, in the human body support devices 1D and 1D', a small angle (close to 0 degrees) between the main frame portion 321 and the upper frame portion supporting the lower body 323 reduces the burden on the lower back and can reduce the factors contributing to diseases such as lower back pain and herniated discs.

[0048] In this way, the human body support devices 1A, 1B, 1C, 1D, and 1D' enable users to perform tasks such as work or studying for extended periods of time.

[0049] Furthermore, various additions can be made for this purpose. For example, the human body support devices 1A, 1B, 1C, 1D, and 1D' can have handrails (not shown) attached to either the left or right side, or both sides, of the frame member 32 of the human body support platform 3. These handrails can also be attached to the frame member 32 so as to be able to rotate from the front to the back of the human body support platform 3, so as not to obstruct the user when moving from outside the human body support platform 3 towards the center or in the opposite direction.

[0050] Furthermore, with the human body support devices 1A, 1B, 1C, 1D, and 1D', when the angle of the main frame portion 321 with respect to the floor surface F is large (closer to an upright position), it is possible to work on a normal desk. However, when the angle of the human body support platform 3 with respect to the floor surface F is small (closer to a reclining position), it may be difficult to work on a normal desk. Therefore, as shown in Figure 9, a small workbench 34 can be attached to the frame member 32 via an arm 34A. The small workbench 34 can securely support a personal computer, keyboard, mouse, books, documents, writing instruments, etc., and is preferably rotatable for ease of use by the user. The arm 34A can also be attached to the frame member 32 so as to rotate from the front to the back of the human body support platform 3, so as not to interfere when the user moves from outside the human body support platform 3 towards the center or in the opposite direction.

[0051] Furthermore, in the human body support devices 1A, 1B, 1C, and 1D, rails (not shown) can be laid, and the casters 4 can move along them. In this case, each of the human body support devices 1A, 1B, 1C, and 1D will be supported by the rails via the casters 4, and since the casters 4 can move smoothly along the rails, it will be even easier to stably tilt the upper body HA and lower body HB backward at a selectable angle.

[0052] The human body support device 1E shown in Figure 10 is equipped with an extendable section 23. The extendable section 23 may be composed of an upper extendable section member (rod) 231 and a lower extendable section member (cylinder tube) 232, similar to the upper extendable section member (rod) 211 and lower extendable section member (cylinder tube) 212 of the extendable section 21 described in the above embodiment. An operating member 23a, similar to the operating member 21a shown in the above embodiment, may be provided on the upper part of the extendable section 23, and the extension and retraction of the extendable section 23 may be operated by a gripping portion 23aa provided on the operating member 23. The direction of extension and retraction is perpendicular to the floor surface F. A base 22 is provided at the lower part of the extendable section 23. Similar to the above embodiment, the extendable section 23 and the base 22 constitute a device support base. Casters 5 may be attached to the underside of the base 22 so that the human body support device 1E can be moved on a flat floor surface F. Alternatively, casters 5 may not be provided, and the base 22 may be placed directly on the floor surface F.

[0053] The human body support device 1E comprises a cushion member 33 that serves as a human body support base, an upper frame lower body support section 323, and a main frame section 321. The cushion member 33 is supported by the upper frame lower body support section 323 and the main frame section 321. The portion of the cushion member 33 supported by the upper frame lower body support section 323 supports the buttocks and thighs. The portion of the cushion member 33 supported by the main frame section 321 supports the upper body from the buttocks upwards. The telescopic section 23 indirectly supports the upper frame lower body support section 323. The height of the upper frame lower body support section 323 can be changed by extending or retracting the telescopic section 23. This allows the soles of the feet (HC) and the lower body (HB) to be positioned in a relaxed position.

[0054] A fourth operating member 36 is provided between the upper telescopic member 231 and the upper frame lower body support 323. The fourth operating member 36 allows adjustment of the angle of the upper frame lower body support 323 with respect to the floor surface F. For example, an intermediate member 38 may be fixed to the upper telescopic member 231, and the fourth operating member 36 may be fixed between the intermediate member 38 and the upper frame lower body support 323. The configuration of the intermediate member 38 is not limited as long as it is fixed to the upper telescopic member 231 and the fourth operating member 36. For example, as shown in Figure 11, the intermediate member 38 may have both sides 381 and a connecting part 382 connecting both sides 381, and the fourth operating member 36 may be attached to both sides 381. The upper telescopic member 231 is fixed to the connecting part 382. Since the upper frame lower body support 323 supports at least the lower sides of the cushion member 33, at least two upper frame lower body support 323 are arranged in parallel. Two side sections 381 are arranged in parallel, and a fourth operating member 36 is attached to both side sections 381. The rotation axis 383 may be made up of the same rod-shaped body so that the two fourth operating members 36 operate synchronously. In Figure 11, there are two fourth operating members 36, but there may be only one fourth operating member 36. A second angle adjustment mechanism is positioned between the telescopic upper member 231 and the lower frame support upper part 323. In this embodiment, the second angle adjustment mechanism is composed of an intermediate member 38 and a fourth operating member 36.

[0055] The fourth operating member 36 is fixed to both sides 381 of the intermediate member 38 and the upper part 323 of the lower frame support, and can change the angle of the upper part 323 of the lower frame support with respect to the floor surface F. The fourth operating member 36 includes a member that can rotate and stop. The fourth operating member 36 can be configured to include, but is not limited to, a stopper hinge, ratchet mechanism, swivel base type, torque hinge, push clamper, angle hinge, turn bracket, slide hinge, counterbalance hinge, pivot hinge, or link hinge. A handle or lever for operating the fourth operating member 36 may be provided. The structure of the intermediate member 38 may also be modified to match the fourth operating member 36. Note that there may be only one fourth operating member 36, and if the fourth operating member 36 is attached to at least one of the sides 381, a rotation mechanism may be attached between the other side 381 and the upper part 323 of the lower frame support.

[0056] The fourth operating member 36 allows the angle between the intermediate member 38 and the upper part of the frame lower body support 323 to be changed. The angle of the upper part of the frame lower body support 323 in the cushion member 33 can be changed. An angle that allows the lower body HB to relax relative to the base 22 and the floor surface F can be selected. By adjusting the height of the upper part of the frame lower body support 323 with the telescopic part 23, the soles of the feet HC can be made to contact the floor surface F, preventing the human body H from falling off the cushion member 33 and stabilizing the human body H.

[0057] Similar to the above embodiment, the human body support device 1E may also include a second operating member 326 for changing the angle between the main frame portion 321 and the upper frame lower body support portion 323. The angle between the main frame portion 321 and the upper frame lower body support portion 323 can also be changed by the second operating member 326. The height and angle of the main frame portion 321 and the upper frame lower body support portion 323 can be adjusted according to the user's body shape, purpose of use, and the proportion of strain on the waist, allowing for a posture that is less strenuous on the human body H.

[0058] Let α be the angle between the floor (horizontal plane) F and the spine (main frame part 321), and β be the angle between the seat (upper frame lower body support part 323) and the main frame part 321. If the pressure P applied to the intervertebral disc when standing upright is set to 100 (%), the relative pressure P applied to the intervertebral disc in any given posture is shown in Table 1. References for obtaining this table include "The Lumbar Spine, An Orthopaedic Challenge, ALF L. NACHEMSON, MD, WOLTERS KLUWER HEALTH, Spine 1(1), March, 1976." or "NHK-TV program "Humanience, 'Spine': The Essence of Complex and Subtle Evolution" (October 12, 2023)." In Tables 1 and 2, γ is the angle (α-β) between the floor (horizontal plane) F and the seat (upper frame lower body support part 323).

[0059] Here, we derive parameters with relatively good correlation to P, such as δ=(α+0.6β) and ε=(α+0.3β), which are shown in Tables 1 and 2. The relationships between δ and P(P1) and ε and P(P2) are shown in Figures 12(a) and (b). From Figure 12, the following two equations roughly estimate the relative pressure P applied to the intervertebral disc from the two angles α and β representing posture: P(P1)=22.6+0.877δ and P(P2)=24.98+0.353ε+0.0054ε 2 This leads to the conclusion.

[0060] The main frame 321, the upper frame lower body support 323, the second operating member 326, or the fourth operating member 36 may be equipped with means (not shown) for measuring at least two angles α, β, and γ, and means (not shown) for calculating at least one of P1 and P2 using the measured angles. The angle measuring device may utilize an angle sensor or the like. Once α, β, and γ are determined, the last one can be calculated. As long as at least one of P1 and P2 can be determined, the above calculation formula may be used, or other functions or calculation formulas may be used. Furthermore, a display means for displaying the calculated results may be placed on a small workbench 34 or the like. From these pressures P, the telescopic section 21 and the fourth operating member 36 are adjusted to select angles α and β (or γ) that do not put a strain on the intervertebral disc. For example, if the sitting posture is set to α=90, β=90 (γ=0), the pressure P2 will be 140.4. However, by adjusting the height and angle of the main frame 321 and the upper frame lower body support 323, for example, to α=45, β=35 (γ=10), P2 becomes 61.2, thus reducing the pressure P applied to the intervertebral disc. In this way, the pressure P1 or P2 applied to the intervertebral disc can be quantitatively estimated and displayed from two angles α and β (or γ) representing the posture, so that the user can choose a posture by referring to the displayed P1 or P2 value. The formulas for P1 and P2 are not limited to the above formulas and can be changed according to the relationship between the angles α~γ representing the posture and the relative pressure P shown in Tables 1 and 2.

[0061] [Table 1]

[0062] [Table 2]

[0063] The human body support device 1E may be fitted with the foldable handrail, the small workbench 34 with an arm, the frame foot support part 322, etc., as described in the above embodiment.

[0064] As shown in Figure 13, the human body support device 1F may include a horizontal member 38H within the intermediate member 38. The horizontal member 38H is a member having a portion parallel to the floor surface F on the surface facing the upper part 323 of the lower body support frame. An extendable section 24 for changing the angle of the main frame section 321 is provided between the main frame section 321 and the intermediate member 38. The extendable section 24 may be the same as the extendable section 21 used to change the angle of the main frame section 321 as in the above embodiment, and the method of attaching the extendable section 24 to the main frame section 321 may be the same as the method of attaching the extendable section 21 to the main frame section 321. To operate the extension and retraction of the extendable section 24, an operating member 24a similar to the operating member 21a described above may be attached to the extendable section 24, and the extension and retraction may be operated by a gripping portion 24aa provided on the operating member 24a.

[0065] A rotatable rotating member 39 is attached to the upper part 323 of the lower frame support. The rotating member 39 is a caster or roller, etc. When the telescopic section 24 extends or retracts, the mounting portion of the main frame section 321 to the telescopic section 24 moves up and down, changing the angle of the main frame section 321. When the angle of the main frame section 321 changes, the rotating member 39 moves on the upper surface of the horizontal member 38H. By changing the height and angle of the main frame section 321, the angle of the upper part 323 of the lower frame support with respect to the floor surface F can be changed. The telescopic section 24, the intermediate member 38 (including the horizontal member 38H), and the rotating member 39 function as a second angle adjustment mechanism.

[0066] The human body support device 1F is equipped with the second operating member 326 described above. The angle between the main frame portion 321 and the upper part of the lower body support frame 323 can also be changed by the second operating member 326, and this angle change also allows the angle of the upper part of the lower body support frame 323 to be changed.

[0067] The rotating member 39 may be attached to the intermediate member 38, in addition to being attached to the upper part 323 of the lower frame support. The upper part 323 of the lower frame support is placed so as to be in contact with the rotating member 39, and the rotating member 39 rotates when the angle of the upper part 323 of the lower frame support is changed.

[0068] As shown in Figure 14, the human body support device 1G may have an extendable section 24 between the intermediate member 38 and the upper frame lower body support section 323. A recess 40 may be provided in a part of the horizontal member 38H so that the extendable section 24 can be attached to the intermediate member 38, and the extendable section 24 may be attached to the recess 40. The structure is not limited as long as the extendable section 24 is attached to the intermediate member 38. The extendable section 24 is attached in the same way as the extendable section 21 is attached to the main frame section 321, so that the attachment portion between the extendable section 24 and the upper frame lower body support section 323 moves up and down as the extendable section 24 extends and retracts, thereby changing the angle of the upper frame lower body support section 323. Similar to Figure 13, a rotating member 39 is rotatably attached to the upper frame lower body support section 323, and the rotating member 39 can move while rotating on the upper surface of the horizontal member 38H of the intermediate member 38. The rotating member 39 is a caster or roller, etc. When the angle of the upper part 323 of the lower frame support changes, the rotating member 39 moves over the upper surface of the horizontal member 38H. By extending or retracting the telescopic part 24, the angle of the upper part 323 of the lower frame support with respect to the horizontal member 38H and the floor surface F can be changed. The extension or retraction of the telescopic part 24 may be operated by the operating member 24a at the gripping part 24aa, similar to the method described in Figure 13. The telescopic part 24, the intermediate member 38 (including the horizontal member 38H), and the rotating member 39 function as an angle adjustment mechanism. In addition to being attached to the upper part 323 of the lower frame support, the rotating member 39 may also be attached to the intermediate member 38. Similar to Figure 13, the telescopic part 24, the intermediate member 38 (including the horizontal member 38H), and the rotating member 39 function as a second angle adjustment mechanism.

[0069] In Figures 13 and 14, the rotating member 39 is rotated by the horizontal member 38H, but the rotating member 39 is not limited to members having a horizontal surface like the horizontal member 38H, as long as it rotates. The intermediate member 38 only needs to have a portion that the rotating member 39 rotates on.

[0070] In any embodiment, a small workbench may be provided. The small workbench may be fixed to the main frame, fixed in a rotatable manner, or attached as needed in a detachable manner. The small workbench can securely support work tools.

[0071] Although a human body support device according to an embodiment of the present invention has been described above, the present invention is not limited to those described in the embodiments, and various design modifications are possible within the scope of the claims. [Explanation of symbols]

[0072] 1A, 1B, 1C, 1D, 1D´, 1E, 1F, 1G Body support device 2 Device support stand 21 Telescopic part 211 Upper part of telescopic part 212 Lower member of the expandable section 213 Unlock pin 21a Operating member 21aa grip part 21b Bearing member 21ba fulcrum formation part 21bb bearing hole 22 Base 22a Caster contact area 23 Telescopic part 231 Telescopic part upper member 232 Lower member of the expandable section 23a Operating member 23aa grip part 24 Telescopic part 241 Upper part of telescopic part 242 Lower member of the expandable section 24a Operating member 24aa grip part 3 Body support platform 31 Shaft member 32 Frame members 321 Main frame 321a Top of the main part of the frame 321b Bottom of the main frame 322 Frame foot support section 323 Frame Lower Body Support Upper Part 324 Frame Lower Body Support Lower Section 325 Frame lower body support auxiliary part 326 Second operating member (first angle adjustment mechanism) 326a Internal gear 326b Planetary gear 326c Sun Gear 326d Planetary Carrier 326e steering wheel 327 Third operating member 33 Cushioning material 34 Small workbench 34A Arm 36. Fourth operating member 38 Intermediate member 381 Both sides 382 Connection part 383 Rotation axis 38H Horizontal Member 39 Rotating member 40 recess 4 casters 4' Roller 5 casters F Floor H human body HA upper body HB lower body HC sole

Claims

1. A device support base is provided with an extendable section that extends vertically and a base that is placed directly on the floor or via casters, A body support base including a cushion member for supporting the human body, a lower body support upper part of the frame attached to the part of the cushion member that supports the human body from the buttocks to the thighs, and a main frame attached to the part that supports the human body's back, A first angle adjustment mechanism for adjusting the angle of the main part of the frame with respect to the upper part of the lower body support of the frame, A second angle adjustment mechanism for adjusting the angle of the upper part of the lower body support of the frame relative to the floor surface, Equipped with, A human body support device in which the aforementioned extendable portion is directly or indirectly attached to the upper part of the lower body support frame or the main part of the frame.

2. In the human body support device according to claim 1, The second angle adjustment mechanism is An intermediate member fixed to the aforementioned expandable portion, A member fixed to the aforementioned intermediate member and the upper part of the lower frame support, which is capable of rotation and stopping, Human body support devices including

3. In the human body support device according to claim 1, The second angle adjustment mechanism is An intermediate member fixed to the aforementioned expandable portion, An extendable part attached to the aforementioned intermediate member, which extends and retracts to raise and lower the main part of the frame or the upper part of the lower frame support, The telescopic part attached to the intermediate member rotates when it extends or retracts, and the rotating member attached to the upper part of the lower frame support or the intermediate member, A human body support device equipped with [a specific feature].

4. In the human body support device according to claim 1, A means for measuring at least two angles: the angle between the floor and the main part of the frame, the angle between the upper part of the lower body support of the frame and the main part of the frame, or the angle between the floor and the upper part of the lower body support of the frame. A means for calculating the pressure applied to the intervertebral disc, or the relative pressure with respect to the pressure applied to the intervertebral disc when standing upright, using a function or formula from any two of the aforementioned angles that have been measured, or a variable that combines any two of those angles, A display means for displaying the results of the calculation means, A human body support device equipped with [a specific feature].

5. The human body support device according to claim 1, comprising a small workbench for firmly supporting work tools, which is fixed to the main part of the frame, fixed so as to be rotatable, or attached so as to be detachable.

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