Balance pad chair

Abstract

A balance pad chair is provided. The balance pad chair includes i) a chair base plate, ii) a first floor support frame whose position changes left-right or up-down in the left area of ​​the chair base plate, iii) a second floor support frame whose position changes left-right or up-down in the right area of ​​the chair base plate, and iv) a spacing adjustment unit that simultaneously changes the positions of the first floor support frame and the second floor support frame. The balance pad chair can maintain a proper sitting posture and reduce physical fatigue caused by using the chair, and prevents and alleviates symptoms such as leg numbness, buttock pain, hip and knee pain caused by changes in body shape, as well as pressure on blood vessels, muscles, and skin.

Description

Technology Field

[0001] The present invention relates to a balance pad chair, and more specifically, to a balance pad chair that corrects the sitting posture and maintains the balance of the spine, pelvis, and buttocks. Background Technology

[0002] It is known that sedentary lifestyles, the habit of sitting with legs crossed, and prolonged sitting disrupt pelvic balance and lead to changes in body shape. These changes can cause lower back pain, buttock pain, hip and knee pain, leg length discrepancy, and lower body obesity.

[0003] Conventional chairs have a structural problem in that their flat seat surfaces fail to efficiently support individual users' buttocks. This leads to a loss of body balance and changes in body shape. The problem to be solved

[0004] Chairs used today have a flat seat structure that does not take into account the individual body shape of the user. This flat seat structure differs from the overall curved shape of a person's buttocks while sitting, and is designed to fail to efficiently absorb the body weight pressure continuously applied to the buttocks.

[0005] Due to structural problems with the flat bottom surface, most of the body's weight pressure is concentrated vertically on the center of the bottom of the buttocks—particularly on the ischial bones where body weight is borne—while some pressure shifts outward to the sides of the buttocks. Consequently, these conventional chairs fail to efficiently absorb body weight pressure, leading to concentrated and continuous pressure on specific areas. This can cause the pelvis to widen and gradually disrupt pelvic balance. This loss of pelvic balance can have a greater impact on body shape changes, particularly for growing children and adolescents, as well as individuals with weak muscle strength or physical stamina.

[0006] This disruption of pelvic balance can lead to gradual changes in body shape and affect the spine and legs, resulting in various symptoms such as leg numbness, lower back pain, changes in buttock shape, and pain in the hips and knees. Additionally, it causes pressure on blood vessels, muscles, and skin, leading to symptoms such as impaired blood circulation due to pressure on blood vessels. Consequently, blood circulation in the lower body becomes poor, which can also be a cause of lower body obesity. means of solving the problem

[0007] A balance pad chair according to an embodiment of the present invention includes i) a chair base plate, ii) a first floor surface support frame whose position changes left-right or up-down in the left area of ​​the chair base plate, iii) a second floor surface support frame whose position changes left-right or up-down in the right area of ​​the chair base plate, and iv) a spacing adjustment unit that simultaneously changes the positions of the first floor surface support frame and the second floor surface support frame. Effects of the invention

[0008] As such, the balance pad chair according to various embodiments of the present invention supports the bottom and left and right sides of the buttocks by forming a curved surface in the shape of the buttocks in a seated position and having left and right sides, and by having a bottom surface that adjusts the left and right width to fit the user's body shape, thereby preventing the displacement of load pressure to the outer sides of the buttocks and directing it toward the inner center, and efficiently dispersing and absorbing the load pressure applied to the buttocks through the widest possible contact surface with the buttocks, thereby expecting the following effects.

[0009] - Prevents pelvic imbalance, maintains proper sitting posture and body balance, and reduces physical fatigue caused by prolonged chair use.

[0010] - Prevention and alleviation of symptoms such as leg numbness, lower back pain, hip pain, and pain in the hips and knees

[0011] - Prevention and alleviation of symptoms such as pressure on blood vessels, muscles, and skin, and blood circulation disorders caused by blood vessel compression

[0012] - Prevention and correction of lateral widening of the hips and pelvis caused by prolonged sitting or childbirth Brief explanation of the drawing

[0013] FIG. 1 is a schematic drawing showing the appearance of a balance pad chair according to a first embodiment of the present invention. FIG. 2 is a schematic diagram showing the other end of the first bottom surface being wound onto the first side roller. Figure 3 is a schematic diagram showing a cross-section along the line AA' of Figure 1. FIG. 4 is a schematic drawing showing the front view of a balance pad chair according to the first embodiment. FIG. 5 is a diagram schematically showing the coupling relationship between the main components of a balance pad chair according to the first embodiment. FIG. 6 is a schematic drawing showing the appearance of a balance pad chair according to a second embodiment of the present invention. Figure 7 is a schematic drawing showing the frame portion and the uneven portion of the first bottom surface support frame. FIG. 8 is a schematic drawing showing the first bottom surface combined with the frame portion of FIG. 7. Figure 9 is a schematic diagram showing a cross-section along the line AA' of Figure 6. FIG. 10 is a diagram schematically showing the coupling relationship between the main components of a balance pad chair according to a second embodiment. FIG. 11 is a schematic drawing showing the appearance of a balance pad chair according to a third embodiment of the present invention. FIG. 12 is a schematic diagram showing the other end of the second bottom surface being wound onto the first side roller. Figure 13 is a schematic diagram showing a cross-section along the line AA' of Figure 11. FIG. 14 is a diagram schematically showing the coupling relationship between the main components of a balance pad chair according to a third embodiment. FIG. 15 is a schematic drawing showing the appearance of a balance pad chair according to the fourth embodiment of the present invention. FIG. 16 is a schematic drawing showing the appearance of the first bottom surface support frame. Figure 17 is a schematic diagram showing a cross-section along the line AA' of Figure 15. FIG. 18 is a diagram schematically showing the coupling relationship between the main components of a balance pad chair according to the fourth embodiment. FIG. 19 is a schematic drawing showing the appearance of a balance pad chair according to the fifth embodiment of the present invention. FIG. 20 is a schematic diagram showing a cross-section along the line AA' of FIG. 19. FIG. 21 is a schematic diagram showing a cross-section along the BB' line of FIG. 19. FIG. 22 is a diagram schematically showing the coupling relationship between the main components of a balance pad chair according to the fifth embodiment. FIG. 23 is a schematic drawing showing the appearance of a balance pad chair according to the 6th embodiment of the present invention. FIG. 24 is a schematic diagram showing a cross-section along the line AA' of FIG. 23. FIG. 25 is a diagram schematically showing the coupling relationship between the main components of a balance pad chair according to the 6th embodiment. FIG. 26 is a schematic drawing showing the appearance of a balance pad chair according to the seventh embodiment of the present invention. FIG. 27 is a schematic drawing showing the frame portion of the first bottom surface support frame. FIG. 28 is a schematic drawing showing the first bottom surface combined with the frame portion of FIG. 27. FIG. 29 is a schematic diagram showing the central cushion of FIG. 26. FIG. 30 is a schematic diagram showing a cross-section along the line AA' of FIG. 26. FIG. 31 is a diagram schematically showing the coupling relationship between the main components of a balance pad chair according to the seventh embodiment. Specific details for implementing the invention

[0014] Hereinafter, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. In the drawings, parts unrelated to the explanation have been omitted to clearly explain the present invention, and the same reference numerals have been used for identical or similar components throughout the specification. In the specification, the left-right direction, front-back direction, and up-down direction are named for convenience and refer to the x, y, and z axis directions that are orthogonal to each other.

[0015] Conventional chairs can cause pelvic imbalance, such as the widening of the pelvis, due to the continuous pressure caused by the flat structure of the bottom surface, which applies body weight pressure vertically to the center of the bottom of the buttocks over a long period of time.

[0016] Such pelvic imbalance leads to changes in body shape and affects the spine and legs, potentially causing symptoms such as leg numbness, changes in buttock shape, and pain in the hips and knees. Additionally, it can cause pressure on blood vessels, muscles, and skin, leading to symptoms such as impaired blood circulation.

[0017] In order to alleviate and improve problems caused by such changes in body shape, it is necessary to efficiently distribute and absorb the gravitational body load pressure concentrated on the underside of the user's buttocks by supporting it according to the user's body shape through a chair base that forms curved surfaces on the left and right undersides and sides of the buttocks in a seated position, and prevents the body load pressure from escaping to the outer sides of the buttocks. Embodiments of the present invention provide a balance pad chair that makes this possible.

[0018] A balance pad chair according to various embodiments enables the maintenance of a correct sitting posture and prevents and alleviates symptoms such as leg numbness, buttock pain, hip and knee pain caused by changes in body shape due to pelvic imbalance, as well as compression of blood vessels, muscles, and skin, and impaired blood circulation caused by compression of blood vessels.

[0019] Chairs used today have a flat seat structure that does not take into account the individual body shape of the user. This flat seat structure differs from the overall curved shape of a person's buttocks while sitting, and thus is designed to fail to efficiently absorb the body weight pressure continuously applied to the buttocks.

[0020] Due to structural problems with the flat bottom surface, these conventional chairs fail to efficiently absorb body weight pressure over time. As a result, most of the body weight pressure is concentrated vertically on the center of the bottom of the buttocks—partially on the ischial bones where weight is borne—while some pressure shifts outward to the sides of the buttocks. Consequently, the chairs cannot efficiently absorb body weight pressure, and the concentrated and continuous pressure on specific areas can lead to a gradual breakdown of pelvic balance, such as the widening of the pelvis. This loss of pelvic balance can have a greater impact on body shape changes, particularly for growing children and adolescents, as well as individuals with weak muscle strength or physical stamina.

[0021] This disruption of pelvic balance can lead to gradual changes in body shape and affect the spine and legs, resulting in various symptoms such as leg numbness, lower back pain, changes in buttock shape, and pain in the hips and knees. Additionally, it causes pressure on blood vessels, muscles, and skin, leading to symptoms such as impaired blood circulation due to pressure on blood vessels. Consequently, blood circulation in the lower body becomes sluggish and may even become a cause of lower body obesity.

[0022] Embodiments of the present invention prevent and improve these problems. A balance pad chair according to various embodiments prevents and improves the problem of body shape changes caused by pelvic imbalance resulting from using conventional chairs with flat bottom surfaces for a long period of time. It supports the user's seated buttocks by forming curved surfaces on the left and right sides and preventing load pressure from escaping to the outer sides of the buttocks, thereby efficiently dispersing and absorbing body load pressure.

[0023] A balance pad chair according to various embodiments efficiently disperses and absorbs load pressure continuously transmitted vertically to the bottom surface of the buttocks by gravity, by supporting the bottom surface of the buttocks and the sides with a chair base that has a curved surface of the side shape and has a function of left-right width adjustment to fit the user's body shape, and directing the load pressure escaping in the left-right lateral direction of the pelvis and hip joint toward the inner center.

[0024] A balance pad chair according to various embodiments supports the left and right sides of the buttocks by applying pressure inwardly toward the center, while more efficiently distributing and absorbing body load pressure to the widest possible contact surface on the bottom and sides of the buttocks to match the user's body shape.

[0025] As such, the balance pad chair according to various embodiments can efficiently distribute and absorb body load pressure over the widest possible contact surface, tailored to the body shape of the user using the chair.

[0026] Specifically, by forming a curved surface that conforms to the shape of the buttocks in a seated position and providing pressure support to the left and right sides of the buttocks in an inward direction, it is possible to prevent pelvic imbalance, maintain a correct sitting posture, and reduce physical fatigue caused by prolonged chair use. It can prevent and alleviate symptoms such as leg numbness, lower back pain, buttock pain, and pain in the hips and knees that result from body shape changes caused by pelvic imbalance. It can also prevent and alleviate symptoms such as compression of blood vessels, muscles, and skin, as well as circulatory disorders caused by blood vessel compression. Through the function of the chair base to support and apply pressure to the left and right sides of the buttocks in an inward direction, it is possible to prevent and correct the widening of the buttocks caused by prolonged sitting or childbirth in women.

[0027] Balance pad chair (2100) according to the first embodiment

[0028] FIG. 1 is a schematic drawing showing the exterior of a balance pad chair (2100) according to a first embodiment of the present invention, FIG. 2 is a schematic drawing showing the other end of a first bottom surface (2150) being wound onto a first side roller (2111), FIG. 3 is a schematic drawing showing a cut along the line AA' of FIG. 1, FIG. 4 is a schematic drawing showing the front view of a balance pad chair (2100) according to a first embodiment, and FIG. 5 is a schematic drawing showing the coupling relationship between the main components of a balance pad chair (2100) according to a first embodiment.

[0029] As illustrated in FIGS. 1 to 5, the balance pad chair (2100) according to the first embodiment is provided in such a way that the first floor surface support frame (2120) and the second floor surface support frame (2130) are moved in the left and right directions by means of a spacing adjustment unit (2140) with respect to the center of the chair base plate (2110), so that the first floor surface (2150) and the second floor surface (2160) are deformed into a shape that fits the user's body shape. The balance pad chair (2100) includes a chair base plate (2110), a first floor surface support frame (2120), a second floor surface support frame (2130), a spacing adjustment unit (2140), a first floor surface (2150), and a second floor surface (2160).

[0030] The chair base plate (2110) has a predetermined area. The chair base plate (2110) may be provided in a flat shape. A first side roller (2111) is provided in the left area of ​​the chair base plate (2110), and a second side roller (2112) is provided in the right area of ​​the chair base plate (2110). The first side roller (2111) and the second side roller (2112) may be provided with the same length and may be arranged symmetrically with respect to the center of the chair base plate (2110). A first center roller (2113) and a second center roller (2114) are provided side by side in the central area of ​​the chair base plate (2110). The first center roller (2113) is located on the left, and the second center roller (2114) is located on the right. The first center roller (2113) and the second center roller (2114) may have a longer length than the first side roller (2111) and the second side roller (2112). The first side roller (2111), the first center roller (2113), the second center roller (2114), and the second side roller (2112) may all be parallel.

[0031] The first floor surface support frame (2120) is seated on the upper left area of ​​the chair base plate (2110) and is provided to be slidable in the left and right directions of the chair base plate (2110). As one example, a movement hole (2115) of a predetermined length in the left and right directions is formed in the left area of ​​the chair base plate (2110), and the first floor surface support frame (2120) can be coupled to the chair base plate (2110) via a pin (2116) that can move along the movement hole (2115). A first opening (2121) is formed in the inner area of ​​the first floor surface support frame (2120) corresponding to the direct upper side of the first side roller (2111). When viewed from the front of the chair base plate (2110), the left end of the first floor surface support frame (2120) may be provided in a shape bent into a '⊃'.

[0032] The second floor support frame (2130) is seated on the upper right area of ​​the chair base plate (2110) and is provided to be slidable in the left and right directions of the chair base plate (2110). As one example, a movement hole (2117) of a predetermined length in the left and right directions is formed in the right area of ​​the chair base plate (2110), and the second floor support frame (2130) can be coupled to the chair base plate (2110) via a pin (2118) that can move along the movement hole (2117). A second opening (2131) is formed in the inner area of ​​the second floor support frame (2130) corresponding to the direct upper side of the second side roller (2112). When viewed from the front of the chair base plate (2120), the right end of the second floor support frame (2130) may be provided in a shape bent into a '⊂'.

[0033] The gap adjustment unit (2140) adjusts the gap (= left-right width) between the first floor surface support frame (2120) and the second floor surface support frame (2130). The gap adjustment unit (2140) may be provided in various forms, and as one example, as shown in the drawing, it includes a bevel gearbox (2141), a first shaft (2142), a first long nut (2143), a second shaft (2144), a second long nut (2145), and an adjustment knob (2146).

[0034] The bevel gear box (2141) includes a first bevel gear (2141a), a second bevel gear (2141b), and a third bevel gear (2141c). The first bevel gear (2141a), the second bevel gear (2141b), and the third bevel gear (2141c) are arranged in a 'T' shape. The bevel gear box (2141) is located below the chair base plate (2110). The bevel gear box (2141) may be located in the center of the chair base plate (2110). The bevel gear box (2141) may be attached to the lower surface of the chair base plate (2110).

[0035] The first shaft (2142) is coupled to the first bevel gear (2141a). Threads are formed on the surface of the first shaft (2142). The first shaft (2142) is located below the left area of ​​the chair base plate (2110). The first long nut (2143) is fastened to the threads of the first shaft (2142). The outer surface of the first long nut (2143) is fixed to the first floor support frame (2120) via the first fastening bar (2143a). At this time, a part of the first fastening bar (2143a) penetrates the chair base plate (2110). When the first shaft (2142) is rotated clockwise or counterclockwise, the first long nut (2143) attached to the first shaft (2142) moves to the left or right of the chair base plate (2110) together with the first floor surface support frame (2120).

[0036] The second shaft (2144) is coupled to the second bevel gear (2141b). Threads are formed on the surface of the second shaft (2144). The second shaft (2144) is located below the right side of the chair base plate (2110). The second long nut (2145) is fastened to the threads of the second shaft (2144). The outer surface of the second long nut (2145) is fixed to the second floor support frame (2130) via the second binding bar (2145a). At this time, a part of the second binding bar (2145a) penetrates the chair base plate (2110). When the second shaft (2144) is rotated clockwise or counterclockwise, the second long nut (2145) attached to the second shaft (2144) moves to the left or right of the chair base plate (2110) together with the second floor surface support frame (2130).

[0037] The adjustment knob (2146) is coupled to the third bevel gear (2141c). The end of the adjustment knob (2146) may be positioned on the front side of the chair base plate (2110). When the adjustment knob (2146) is rotated clockwise or counterclockwise, power is transmitted to the first bevel gear (2141a) and the second bevel gear (2141b), and the first floor surface support frame (2120) and the second floor surface support frame (2130) move in a direction toward each other or toward each other.

[0038] One end of the first bottom surface (2150) is fixed to the left end of the first bottom surface support frame (2120) above the chair base plate (2110) and wraps around the front and rear sides of the left end. The other end of the first bottom surface (2150) passes through the upper surface of the chair base plate (2110), the first center roller (2113), the lower surface of the chair base plate (2110), and the first side roller (2111), then passes through the first opening (2121) and is fixed to the upper surface of the first bottom surface support frame (2120). The first bottom surface (2150) supports the user's left buttocks. Accordingly, the curvature of the first bottom surface (2150) changes depending on the position of the first bottom surface support frame (2120).

[0039] One end of the second bottom surface (2160) is fixed to the right end of the second bottom surface support frame (2130) above the chair base plate (2110) and wraps around the front and rear sides of the right end. The other end of the second bottom surface (2160) passes through the upper surface of the chair base plate (2110), the second center roller (2114), the lower surface of the chair base plate (2110), and the second side roller (2112), then passes through the second opening (2131) and is fixed to the upper surface of the second bottom surface support frame (2130). The second bottom surface (2160) supports the user's right buttocks. Accordingly, the curvature of the second bottom surface (2160) changes depending on the position of the second bottom surface support frame (2130).

[0040] The first bottom surface (2150) and the second bottom surface (2160) may be provided in various materials. For example, the first bottom surface (2150) and the second bottom surface (2160) may be provided in materials such as mesh, fabric, leather, and synthetic fiber.

[0041] Balance pad chair (2200) according to the second embodiment

[0042] FIG. 6 is a schematic drawing showing the exterior of a balance pad chair (2200) according to a second embodiment of the present invention, FIG. 7 is a schematic drawing showing the frame portion (2222) and the uneven portion (2223) of a first floor surface support frame (2220), FIG. 8 is a schematic drawing showing the first floor surface (2250) combined with the frame portion (2222) of FIG. 7, FIG. 9 is a schematic drawing showing a cut along the line AA' of FIG. 6, and FIG. 10 is a schematic drawing showing the combination relationship between the main components of the balance pad chair (2200) according to the second embodiment.

[0043] As illustrated in FIGS. 6 to 10, the balance pad chair (2200) according to the second embodiment is provided in such a way that the first floor surface support frame (2220) and the second floor surface support frame (2230) are moved in the left and right directions by means of a spacing adjustment unit (2240) with respect to the center of the chair base plate (2210), so that the first floor surface (2250) and the second floor surface (2260) are deformed into a shape that fits the user's body shape. The balance pad chair (2200) includes a chair base plate (2210), a first floor surface support frame (2220), a second floor surface support frame (2230), a spacing adjustment unit (2240), a first floor surface (2250), and a second floor surface (2260).

[0044] The chair base plate (2210) has a predetermined area. The chair base plate (2210) may be provided in a flat shape. A receiving portion (2211) capable of accommodating a first conveyor roller portion (2224) and a second conveyor roller portion (2234) may be formed in the chair base plate (2210).

[0045] The first floor surface support frame (2220) is seated on the left side of the upper surface of the chair base plate (2210) and is provided to be slidable in the left and right directions of the chair base plate (2210). A first conveyor roller section (2224) that reduces frictional force during the sliding movement of the first floor surface support frame (2220) may be provided on the lower surface of the first floor surface support frame (2220). The first conveyor roller section (2224) may be provided in a two-row structure. The first floor surface support frame (2220) may include a slider section (2221), a frame section (2222), and an uneven section (2223). The slider section (2221) includes the aforementioned first conveyor roller section (2224) and is movably coupled to the chair base plate (2210). The frame section (2222) is provided in a shape that wraps around the left buttocks and is provided on the upper part of the slider section (2221). The uneven portion (2223) is formed on the right end of the frame portion (2222). The uneven portion (2223) may have a shape similar to the teeth of a comb.

[0046] The second floor surface support frame (2230) is seated on the right side of the upper surface of the chair base plate (2210) and is provided to be slidable in the left and right directions of the chair base plate (2210). A second conveyor roller section (2234) that reduces frictional force during the sliding movement of the second floor surface support frame (2230) may be provided on the lower surface of the second floor surface support frame (2230). The second conveyor roller section (2234) may be provided in a two-row structure. The second floor surface support frame (2230) may include a slider section (2231), a frame section (2232), and an uneven section (2233). The slider section (2231) includes the aforementioned second conveyor roller section (2234) and is movably coupled to the chair base plate (2210). The frame section (2232) is provided in a shape that wraps around the right buttocks and is provided on the upper part of the slider section (2231). The uneven portion (2233) is formed at the left end of the frame portion (2232). The uneven portion (2233) may have a shape similar to the teeth of a comb. The uneven portion (2223) of the first bottom surface support frame (2220) and the uneven portion (2233) of the second bottom surface support frame (2230) have a structure in which they interlock and overlap.

[0047] The gap adjustment unit (2240) adjusts the gap (= left-right width) between the first floor surface support frame (2220) and the second floor surface support frame (2230). The gap adjustment unit (2240) may be provided in various forms, and as one example, as shown in the drawing, it includes a bevel gearbox (2241), a first shaft (2242), a first holder (2243), a first long nut (2244), a first spring (2243b), a second shaft (2245), a second holder (2246), a second long nut (2247), a second spring (2246b), and a motor (2248).

[0048] The bevel gear box (2241) includes a first bevel gear (2241a), a second bevel gear (2241b), and a third bevel gear (2241c). The first bevel gear (2241a), the second bevel gear (2241b), and the third bevel gear (2241c) are arranged in a 'T' shape. The bevel gear box (2241) is located below the chair base plate (2210). The bevel gear box (2241) may be located in the center of the chair base plate (2210). The bevel gear box (2241) may be coupled to the lower surface of the chair base plate (2210).

[0049] The first shaft (2242) is coupled to the first bevel gear (2241a). Threads are formed on the surface of the first shaft (2242). The first shaft (2242) is located below the left area of ​​the chair base plate (2210). The first holder (2243) is fixed to the first floor surface support frame (2220) via the first binding bar (2243a). At this time, a part of the first binding bar (2243a) penetrates the chair base plate (2210). The first long nut (2244) is fastened to the threads of the first shaft (2242) and is located inside the first holder (2243). The first long nut (2244) is movable in the left and right directions inside the first holder (2243). When the first shaft (2242) is rotated clockwise or counterclockwise, the first long nut (2244) attached to the first shaft (2242) moves to the left or right of the chair base plate (2210) together with the first floor surface support frame (2220). The first spring (2243b) is provided between the first holder (2243) and the first long nut (2244). Due to the organic combination structure of the first holder (2243), the first long nut (2244), and the first spring (2243b), the first floor surface support frame (2220) can be elastically supported on the user's left buttocks.

[0050] The second shaft (2245) is coupled to the second bevel gear (2241b). Threads are formed on the surface of the second shaft (2245). The second shaft (2245) is located below the right area of ​​the chair base plate (2210). The second holder (2246) is fixed to the second floor surface support frame (2230) via the second binding bar (2246a). At this time, a part of the second binding bar (2246a) penetrates the chair base plate (2210). The second long nut (2247) is fastened to the threads of the second shaft (2245) and is located inside the second holder (2246). The second long nut (2247) is movable in the left and right directions inside the second holder (2246). When the second shaft (2245) is rotated clockwise or counterclockwise, the second long nut (2247) attached to the second shaft (2245) moves to the left or right of the chair base plate (2210) together with the second floor surface support frame (2230). The second spring (2246b) is provided between the second holder (2246) and the second long nut (2247). Due to the organic combination structure of the second holder (2246), the second long nut (2247), and the second spring (2246b), the second floor surface support frame (2230) can be elastically supported on the user's right buttocks.

[0051] The motor (2248) is coupled to the third bevel gear (2241c). When the shaft of the motor (2248) rotates clockwise or counterclockwise, power is transmitted to the first bevel gear (2241a) and the second bevel gear (2241b), causing the first floor support frame (2220) and the second floor support frame (2230) to move closer to each other or further apart from each other. The motor (2248) can be wirelessly controlled. A button for operating the motor (2248) may be provided on the chair base plate (2210). Although not shown in the drawing, an adjustment knob may be coupled to the third bevel gear (2241c) instead of the motor (2248) to allow manual adjustment of the gap (= width) between the first floor support frame (2220) and the second floor support frame (2230).

[0052] The first bottom surface (2250) is connected to the frame portion (2222) of the first bottom surface support frame (2220). The first bottom surface (2250) supports the user's left buttocks. The second bottom surface (2260) is connected to the frame portion (2232) of the second bottom surface support frame (2230). The second bottom surface (2260) supports the user's right buttocks. The first bottom surface (2250) and the second bottom surface (2260) may be provided in various materials. For example, the first bottom surface (2250) and the second bottom surface (2260) may be provided in materials such as mesh, fabric, leather, or synthetic fibers. Additionally, the first bottom surface (2250) and the second bottom surface (2260) may include a cushion.

[0053] Balance pad chair (2300) according to the third embodiment

[0054] FIG. 11 is a schematic drawing showing the exterior of a balance pad chair (2300) according to a third embodiment of the present invention, FIG. 12 is a schematic drawing showing the other end of a second bottom surface (2360) being wound onto a first side roller (2311), FIG. 13 is a schematic drawing showing a cut along the line AA' of FIG. 11, and FIG. 14 is a schematic drawing showing the coupling relationship between the main components of a balance pad chair (2300) according to a third embodiment.

[0055] As illustrated in FIGS. 11 to 14, the balance pad chair (2300) according to the third embodiment is provided in such a way that the first floor surface support frame (2320) and the second floor surface support frame (2330) move in the left and right directions by means of a spacing adjustment unit (2340) with respect to the center of the chair base plate (2310), so that the first floor surface (2350) and the second floor surface (2360) are deformed into a shape that fits the user's body shape. The balance pad chair (2300) includes a chair base plate (2310), a first floor surface support frame (2320), a second floor surface support frame (2330), a spacing adjustment unit (2340), a first floor surface (2350), and a second floor surface (2360).

[0056] The chair base plate (2310) has a predetermined area. The chair base plate (2310) may be provided in a flat shape. A first side roller (2311) is provided in the left area of ​​the chair base plate (2310), and a second side roller (2312) is provided in the right area of ​​the chair base plate (2310). The first side roller (2311) and the second side roller (2312) may be provided with the same length and may be arranged symmetrically with respect to the center of the chair base plate (2310).

[0057] The first floor support frame (2320) is attached to the left area of ​​the chair base plate (2310) and is provided to be slidable in the left and right directions of the chair base plate (2310). The first floor support frame (2320) is provided in a form that wraps around the left buttocks. The first floor support frame (2320) is provided in a form where the height of the left side is higher than that of the right side. The right area of ​​the first floor support frame (2320) may be provided in a form that wraps around the front edge, the bottom surface, and the rear edge of the chair base plate (2310).

[0058] The second floor support frame (2330) is attached to the right area of ​​the chair base plate (2310) and is provided to be slidable in the left and right directions of the chair base plate (2330). The second floor support frame (2330) is provided in a form that wraps around the right buttocks. The second floor support frame (2330) is provided in a form where the height of the right side is higher than that of the left side. The left area of ​​the second floor support frame (2330) may be provided in a form that wraps around the front edge, the bottom surface, and the rear edge of the chair base plate (2310).

[0059] The gap adjustment unit (2340) adjusts the gap (= left-right width) between the first floor surface support frame (2320) and the second floor surface support frame (2330). The gap adjustment unit (2340) may be provided in various forms, and as one example, as shown in the drawing, it includes a bevel gearbox (2341), a first shaft (2342), a first holder (2343), a first long nut (2344), a first spring (2343b), a second shaft (2345), a second holder (2346), a second long nut (2347), a second spring (2346b), and an adjustment knob (2348).

[0060] The bevel gear box (2341) includes a first bevel gear (2341a), a second bevel gear (2341b), and a third bevel gear (2341c). The first bevel gear (2341a), the second bevel gear (2341b), and the third bevel gear (2341c) are arranged in a 'T' shape. The bevel gear box (2341) is located below the chair base plate (2310). The bevel gear box (2341) may be located in the center of the chair base plate (2310). The bevel gear box (2341) may be attached to the lower surface of the chair base plate (2310).

[0061] The first shaft (2342) is coupled to the first bevel gear (2341a). Threads are formed on the surface of the first shaft (2342). The first shaft (2342) is located below the left area of ​​the chair base plate (2310). The first holder (2343) is fixedly coupled to the first floor surface support frame (2320). The first long nut (2344) is fastened to the threads of the first shaft (2342) and is located inside the first holder (2343). The first long nut (2344) is movable in the left and right directions inside the first holder (2343). When the first shaft (2342) is rotated clockwise or counterclockwise, the first long nut (2344) fastened to the first shaft (2342) moves to the left or right of the chair base plate (2310) together with the first floor surface support frame (2320). The first spring (2343b) is provided between the first holder (2343) and the first long nut (2344). Due to the organic combination structure of the first holder (2343), the first long nut (2344), and the first spring (2343b), the first floor surface support frame (2320) can be elastically supported on the user's left buttocks.

[0062] The second shaft (2345) is coupled to the second bevel gear (2341b). Threads are formed on the surface of the second shaft (2345). The second shaft (2345) is located below the right area of ​​the chair base plate (2310). The second holder (2346) is fixedly coupled to the second floor surface support frame (2330). The second long nut (2347) is fastened to the threads of the second shaft (2345) and is located inside the second holder (2346). The second long nut (2347) is movable in the left and right directions inside the second holder (2346). When the second shaft (2345) is rotated clockwise or counterclockwise, the second long nut (2347) fastened to the second shaft (2345) moves to the left or right of the chair base plate (2310) together with the second floor surface support frame (2330). The second spring (2346b) is provided between the second holder (2346) and the second long nut (2347). Due to the organic combination structure of the second holder (2346), the second long nut (2347), and the second spring (2346b), the second bottom surface support frame (2330) can be elastically supported on the user's right buttocks.

[0063] The adjustment knob (2348) is coupled to the third bevel gear (2341c). The end of the adjustment knob (2348) may be positioned on the front side of the chair base plate (2310). When the adjustment knob (2348) is rotated clockwise or counterclockwise, power is transmitted to the first bevel gear (2341a) and the second bevel gear (2341b), and the first floor surface support frame (2320) and the second floor surface support frame (2330) move in a direction toward each other or toward each other.

[0064] One end of the first bottom surface (2350) is fixed to the left end of the first bottom surface support frame (2320) above the chair base plate (2310). The other end of the first bottom surface (2350) passes over the upper surface of the chair base plate (2310) and the second side roller (2312), and is fixed to the second bottom surface support frame (2330) by means of a fixing device (2331). The first bottom surface (2350) supports the user's left buttocks.

[0065] One end of the second floor surface (2360) is fixed to the left end of the second floor surface support frame (2330) above the chair base plate (2310). The other end of the second floor surface (2360) passes through the upper surface of the chair base plate (2310) and the first side roller (2311), and is fixed to the first floor surface support frame (2320) by means of a fixing device (2321). The second floor surface (2360) supports the user's left buttocks. In order for the first floor surface (2350) and the second floor surface (2360) to intersect each other, a first string section (2351) consisting of a plurality of strings is provided in the central area of ​​the first floor surface (2350), and a second string section (2361) consisting of a plurality of strings may be provided in the central area of ​​the second floor surface (2360).

[0066] The first bottom surface (2350) and the second bottom surface (2360) may be provided in various materials. For example, the first bottom surface (2350) and the second bottom surface (2360) may be provided in materials such as mesh, fabric, leather, and synthetic fiber.

[0067] Balance pad chair (2400) according to the fourth embodiment

[0068] FIG. 15 is a schematic drawing showing the exterior of a balance pad chair (2400) according to a fourth embodiment of the present invention, FIG. 16 is a schematic drawing showing the appearance of a first floor surface support frame (2420), FIG. 17 is a schematic drawing showing a cut along the line AA' of FIG. 15, and FIG. 18 is a schematic drawing showing the coupling relationship between the main components of a balance pad chair (2400) according to a fourth embodiment.

[0069] As illustrated in FIGS. 15 to 18, the balance pad chair (2400) according to the fourth embodiment is provided in such a way that the first floor surface support frame (2420) and the second floor surface support frame (2430) are moved in the left and right directions by means of a spacing adjustment unit (2440) with respect to the center of the chair base plate (2410), so that the first floor surface (2450) and the second floor surface (2460) are deformed into a shape that fits the user's body shape. The balance pad chair (2400) includes a chair base plate (2410), a first floor surface support frame (2420), a second floor surface support frame (2430), a spacing adjustment unit (2440), a first floor surface (2450), and a second floor surface (2460).

[0070] The chair base plate (2410) has a predetermined area. The chair base plate (2410) can be provided in a flat shape.

[0071] The first floor surface support frame (2420) is seated on the upper left area of ​​the chair base plate (2410) and is provided to be slidable in the left and right directions of the chair base plate (2410). The first floor surface support frame (2420) may include a slider part (2421), a frame part (2422), and an uneven part (2423). The slider part (2421) is movably coupled to the chair base plate (2410). The slider part (2421) may be provided in the form of a square pipe with a space provided inside to accommodate the chair base plate (2410). The frame part (2422) is provided in a shape that wraps around the left buttocks and is provided on the upper part of the slider part (2421). The uneven part (2423) is formed at the right end of the frame part (2422). The uneven part (2423) may be in a shape similar to the teeth of a comb.

[0072] The second floor surface support frame (2430) is seated on the upper right area of ​​the chair base plate (2410) and is provided to be slidable in the left and right directions of the chair base plate (2410). The second floor surface support frame (2430) may include a slider part (2431), a frame part (2432), and an uneven part (2433). The slider part (2431) is movably coupled to the chair base plate (2410). The slider part (2431) may be provided in the form of a square pipe with a space provided inside to accommodate the chair base plate (2410). The frame part (2432) is provided in a shape that wraps around the right buttocks and is provided on the upper part of the slider part (2431). The uneven part (2433) is formed at the left end of the frame part (2432). The uneven part (2433) may be in a shape similar to the teeth of a comb. The uneven portion (2423) of the first floor surface support frame (2420) and the uneven portion (2433) of the second floor surface support frame (2430) have a structure that interlocks and overlaps.

[0073] The gap adjustment unit (2440) adjusts the gap (= left-right width) between the first floor surface support frame (2420) and the second floor surface support frame (2430). The gap adjustment unit (2440) may be provided in various forms, and as one example, as shown in the drawing, it includes a bevel gearbox (2441), a first shaft (2442), a first holder (2443), a first long nut (2444), a first spring (2443b), a second shaft (2445), a second holder (2446), a second long nut (2447), a second spring (2446b), and an adjustment knob (2448).

[0074] The bevel gear box (2441) includes a first bevel gear (2441a), a second bevel gear (2441b), and a third bevel gear (2441c). The first bevel gear (2441a), the second bevel gear (2441b), and the third bevel gear (2441c) are arranged in a 'T' shape. The bevel gear box (2441) is located below the chair base plate (2410). The bevel gear box (2441) may be located in the center of the chair base plate (2410).

[0075] The first shaft (2442) is coupled to the first bevel gear (2441a). Threads are formed on the surface of the first shaft (2442). The first shaft (2442) is located below the left area of ​​the chair base plate (2410). The first holder (2443) is fixed to the first floor surface support frame (2420) via the first binding bar (2443a). The first long nut (2444) is fastened to the threads of the first shaft (2442) and is located inside the first holder (2443). The first long nut (2444) is movable in the left and right directions inside the first holder (2443). When the first shaft (2442) is rotated clockwise or counterclockwise, the first long nut (2444) attached to the first shaft (2442) moves to the left or right of the chair base plate (2410) together with the first floor surface support frame (2420). The first spring (2443b) is provided between the first holder (2443) and the first long nut (2444). Due to the organic combination structure of the first holder (2443), the first long nut (2444), and the first spring (2443b), the first floor surface support frame (2420) can be elastically supported on the user's left buttocks.

[0076] The second shaft (2445) is coupled to the second bevel gear (2441b). Threads are formed on the surface of the second shaft (2445). The second shaft (2445) is located below the right area of ​​the chair base plate (2410). The second holder (2446) is fixed to the second floor surface support frame (2230) via the second binding bar (2446a). The second long nut (2447) is fastened to the threads of the second shaft (2445) and is located inside the second holder (2446). The second long nut (2447) is movable in the left and right directions inside the second holder (2446). When the second shaft (2445) is rotated clockwise or counterclockwise, the second long nut (2447) attached to the second shaft (2445) moves to the left or right of the chair base plate (2410) together with the second floor surface support frame (2430). The second spring (2446b) is provided between the second holder (2446) and the second long nut (2447). Due to the organic combination structure of the second holder (2446), the second long nut (2447), and the second spring (2446b), the second floor surface support frame (2430) can be elastically supported on the user's right buttocks.

[0077] The adjustment knob (2448) is coupled to the third bevel gear (2441c). The end of the adjustment knob (2448) may be positioned on the front side of the chair base plate (2410). When the adjustment knob (2448) is rotated clockwise or counterclockwise, power is transmitted to the first bevel gear (2441a) and the second bevel gear (2441b), and the first floor surface support frame (2420) and the second floor surface support frame (2430) move in a direction toward each other or toward each other.

[0078] The first bottom surface (2450) is connected to the frame portion (2422) of the first bottom surface support frame (2420). The first bottom surface (2450) supports the user's left buttocks. The second bottom surface (2460) is connected to the frame portion (2432) of the second bottom surface support frame (2430). The second bottom surface (2460) supports the user's right buttocks. The first bottom surface (2450) and the second bottom surface (2460) may be provided in various materials. For example, the first bottom surface (2450) and the second bottom surface (2460) may be provided in materials such as mesh, fabric, leather, or synthetic fibers. Additionally, the first bottom surface (2450) and the second bottom surface (2460) may include a cushion.

[0079] Balance pad chair (2500) according to the 5th embodiment

[0080] FIG. 19 is a schematic drawing showing the exterior of a balance pad chair (2500) according to the fifth embodiment of the present invention, FIG. 20 is a schematic drawing showing a cut along the line AA' of FIG. 19, FIG. 21 is a schematic drawing showing a cut along the line BB' of FIG. 19, and FIG. 22 is a schematic drawing showing the coupling relationship between the main components of the balance pad chair (2500) according to the fifth embodiment.

[0081] As illustrated in FIGS. 19 to 22, the balance pad chair (2500) according to the fifth embodiment is provided in such a way that the first floor surface support frame (2520) and the second floor surface support frame (2530) move up and down by means of a spacing adjustment unit (2540) with respect to the center of the chair base plate (2510), thereby deforming the floor surface (2550) into a shape that fits the user's body shape. The balance pad chair (2500) includes a chair base plate (2510), a first floor surface support frame (2520), a second floor surface support frame (2530), a first link (2521), a second link (2531), a spacing adjustment unit (2540), and a floor surface (2550).

[0082] The chair base plate (2510) has a predetermined area. The chair base plate (2510) may be provided in a flat shape. A component receiving frame (2511) with open left and right sides may be provided at the bottom of the chair base plate (2510).

[0083] The first floor surface support frame (2520) may be provided in an arc shape. The lower end of the first floor surface support frame (2520) is hinge-connected to the upper left area of ​​the chair base plate (2510). The upper end of the first floor surface support frame (2520) is located in the left outer area of ​​the chair base plate (2510). The upper end of the first floor surface support frame (2520) may be provided in a rolled-up cylindrical shape.

[0084] The second floor surface support frame (2530) may be provided in an arc shape. The lower end of the second floor surface support frame (2530) is hinged to the upper right area of ​​the chair base plate (2510). The upper end of the second floor surface support frame (2530) is located in the right outer area of ​​the chair base plate (2510). The upper end of the second floor surface support frame (2530) may be provided in a rolled-up cylindrical shape. With respect to the center of the chair base plate (2510), the first floor surface support frame (2520) and the second floor surface support frame (2530) are symmetrical.

[0085] One end of the first link (2521) is hinged to the lower part of the first floor support frame (2520). The other end of the first link (2521) is located below the chair base plate (2510) and is hinged to the outer side of the first square nut (2543) of the spacing adjustment unit (2540) described later.

[0086] One end of the second link (2531) is hinged to the lower part of the second floor support frame (2530). The other end of the second link (2531) is located below the chair base plate (2510) and is hinged to the outer side of the second square nut (2545) of the spacing adjustment unit (2540) described later.

[0087] The spacing adjustment unit (2540) adjusts the spacing between the other end of the first link (2521) and the other end of the second link (2531). The spacing adjustment unit (2540) adjusts the spacing (left-right width) between the top (left end) of the first floor surface support frame (2520) and the top (right end) of the second floor surface support frame (2530). The spacing adjustment unit (2540) may be provided in various forms, and as one example, as shown in the drawing, it includes a bevel gearbox (2541), a first shaft (2542), a first square nut (2543), a second shaft (2544), a second square nut (2545), and an adjustment knob (2546). The spacing adjustment unit (2540) may be located inside the component receiving frame (2511).

[0088] The bevel gearbox (2541) includes a first bevel gear (2541a), a second bevel gear (2541b), and a third bevel gear (2541c). The first bevel gear (2541a), the second bevel gear (2541b), and the third bevel gear (2541c) are arranged in a 'T' shape.

[0089] The bevel gear box (2541) is located below the chair base plate (2510). The bevel gear box (2541) may be located in the center of the chair base plate (2510). The bevel gear box (2541) may be attached to the lower surface of the chair base plate (2510).

[0090] The first shaft (2542) is coupled to the first bevel gear (2541a). Threads are formed on the surface of the first shaft (2542). The first shaft (2542) is located below the left area of ​​the chair base plate (2510). The first square nut (2543) is fastened to the threads of the first shaft (2142). When the first shaft (2542) is rotated clockwise or counterclockwise, the first square nut (2543) moves, causing the position of the first link (2521) and the position of the first floor support frame (2520) to change sequentially. When the first square nut (2543) moves to the left, the height of the top of the first floor support frame (2520) rises, and the position of the top becomes closer to the center of the chair base plate (2510).

[0091] The second shaft (2544) is coupled to the second bevel gear (2541b). Threads are formed on the surface of the second shaft (2544). The second shaft (2544) is located below the right area of ​​the chair base plate (2510). The second square nut (2545) is fastened to the threads of the second shaft (2144). When the second shaft (2544) is rotated clockwise or counterclockwise, the second square nut (2544) moves, causing the position of the second link (2531) and the position of the second base support frame (2530) to change sequentially. When the second square nut (2545) moves to the right, the height of the top of the second base support frame (2530) rises, and the position of the top becomes closer to the center of the chair base plate (2510).

[0092] The adjustment knob (2546) is coupled to the third bevel gear (2541c). The end of the adjustment knob (2546) may be positioned on the front side of the chair base plate (2510). When the adjustment knob (2546) is rotated clockwise or counterclockwise, power is transmitted to the first bevel gear (2541a) and the second bevel gear (2541b), and the top of the first floor surface support frame (2520) and the top of the second floor surface support frame (2530) move in a direction toward each other or toward each other.

[0093] One end of the bottom surface (2550) is fixed to the left end of the first bottom surface support frame (2520) of the chair base plate (2510). The other end of the bottom surface (2560) is fixed to the right end of the second bottom surface support frame (2530). The bottom surface (2550) may be provided in various materials. For example, the bottom surface (2550) may be provided in materials such as mesh, fabric, leather, or synthetic fiber. The bottom surface (2550) may include a cushion.

[0094] Balance pad chair (2600) according to the 6th embodiment

[0095] FIG. 23 is a schematic drawing showing the exterior of a balance pad chair (2600) according to the sixth embodiment of the present invention, FIG. 24 is a schematic drawing showing a cross-section along the line AA' of FIG. 23, and FIG. 25 is a schematic drawing showing the coupling relationship between the main components of the balance pad chair (2600) according to the sixth embodiment.

[0096] As illustrated in FIGS. 23 to 25, the balance pad chair (2600) according to the sixth embodiment is provided in such a way that the first floor surface support frame (2620) and the second floor surface support frame (2630) move in the left and right directions by means of a spacing adjustment unit (2640) with respect to the center of the chair base plate (2610), thereby deforming the floor surface (2650) into a radius of curvature suitable for the user's body shape. The balance pad chair (2600) includes a chair base plate (2610), a first floor surface support frame (2620), a second floor surface support frame (2630), a spacing adjustment unit (2640), and a floor surface (2650).

[0097] The chair base plate (2610) has a predetermined area. The chair base plate (2610) may be provided with a folded portion (2611) that wraps around the first floor surface support frame (2620) and the second floor surface support frame (2630), which will be described later, at the front edge and the rear edge.

[0098] The first floor surface support frame (2620) is seated on the lower left area of ​​the chair base plate (2610) and is provided to be slidable in the left and right directions of the chair base plate (2610). The first floor surface support frame (2620) may include a slider part (2621) and a frame part (2622). The slider part (2621) is movably coupled to the chair base plate (2610). The frame part (2622) is provided in a shape that wraps around the outer side of the left buttocks and is formed at the left end of the slider part (2621).

[0099] The second floor support frame (2630) is seated on the lower right area of ​​the chair base plate (2610) and is provided to be slidable in the left and right directions of the chair base plate (2610). The second floor support frame (2630) may include a slider part (2631) and a frame part (2632). The slider part (2631) is movably coupled to the chair base plate (2610). The frame part (2632) is provided in a shape that wraps around the right buttocks on the outside and is formed at the right end of the slider part (2631).

[0100] The gap adjustment unit (2640) adjusts the gap (= left-right width) between the first floor surface support frame (2620) and the second floor surface support frame (2630). The gap adjustment unit (2640) may be provided in various forms, and as one example, as shown in the drawing, it includes a bevel gearbox (2641), a first shaft (2642), a first long nut (2643), a second shaft (2644), a second long nut (2645), and an adjustment knob (2646).

[0101] The bevel gearbox (2641) includes a first bevel gear (2641a), a second bevel gear (2641b), and a third bevel gear (2641c). The first bevel gear (2641a), the second bevel gear (2641b), and the third bevel gear (2641c) are arranged in a 'T' shape.

[0102] The bevel gear box (2641) is located below the chair base plate (2610). The bevel gear box (2641) may be located in the center of the chair base plate (2610). The bevel gear box (2641) may be attached to the lower surface of the chair base plate (2610).

[0103] The first shaft (2642) is coupled to the first bevel gear (2641a). Threads are formed on the surface of the first shaft (2642). The first shaft (2642) is located below the left area of ​​the chair base plate (2610). The first long nut (2643) is fastened to the threads of the first shaft (2642). The first long nut (2643) is fixed to the first floor surface support frame (2620). When the first shaft (2642) is rotated clockwise or counterclockwise, the first long nut (2643) fastened to the first shaft (2642) moves to the left or right of the chair base plate (2610) together with the first floor surface support frame (2620).

[0104] The second shaft (2644) is coupled to the second bevel gear (2641b). Threads are formed on the surface of the second shaft (2644). The second shaft (2644) is located below the right area of ​​the chair base plate (2610). The second long nut (2645) is fastened to the threads of the second shaft (2644). The second long nut (2645) is fixed to the second floor surface support frame (2630). When the second shaft (2644) is rotated clockwise or counterclockwise, the second long nut (2645) fastened to the second shaft (2644) moves to the left or right of the chair base plate (2610) together with the second floor surface support frame (2630).

[0105] The adjustment knob (2646) is coupled to the third bevel gear (2641c). The end of the adjustment knob (2646) may be positioned on the front side of the chair base plate (2610). When the adjustment knob (2646) is rotated clockwise or counterclockwise, power is transmitted to the first bevel gear (2641a) and the second bevel gear (2641b), and the first floor surface support frame (2620) and the second floor surface support frame (2630) move in a direction toward each other or toward each other.

[0106] The bottom surface (2650) may be provided with an elastic material. One end of the bottom surface (2650) is fixed to the left end of the first bottom surface support frame (2620). The other end of the bottom surface (2650) is fixed to the right end of the second bottom surface support frame (2630). Accordingly, when the first bottom surface support frame (2620) and the second bottom surface support frame (2630) move in a direction toward each other or toward each other by means of the gap adjustment unit (2640), the radius of curvature of the bottom surface (2650) changes.

[0107] The bottom surface (2650) may be provided in various materials. For example, the bottom surface (2650) may be provided in materials such as mesh, fabric, leather, or synthetic fiber. The bottom surface (2650) may include a cushion.

[0108] Balance pad chair (2700) according to the 7th embodiment

[0109] FIG. 26 is a schematic drawing showing the exterior of a balance pad chair (2700) according to the seventh embodiment of the present invention, FIG. 27 is a schematic drawing showing the appearance of a frame part (2722) of a first floor surface support frame (2720), FIG. 28 is a schematic drawing showing the first floor surface combined with the frame part of FIG. 27, FIG. 29 is a schematic drawing showing the central cushion (2712) of FIG. 26, FIG. 30 is a schematic drawing showing a cut along the line AA' of FIG. 26, and FIG. 31 is a schematic drawing showing the connection relationship between the main components of the balance pad chair (2700) according to the seventh embodiment.

[0110] As illustrated in FIGS. 26 to 31, the balance pad chair (2700) according to the seventh embodiment is provided in such a way that the first floor surface support frame (2720) and the second floor surface support frame (2730) are moved in the left and right directions by means of a spacing adjustment unit (2740) with respect to the center of the chair base plate (2710), so that the first floor surface (2750) and the second floor surface (2760) are deformed into a shape that fits the user's body shape. The balance pad chair (2700) includes a chair base plate (2710), a first floor surface support frame (2720), a second floor surface support frame (2730), a spacing adjustment unit (2740), a first floor surface (2750), and a second floor surface (2760).

[0111] The chair base plate (2710) has a predetermined area. The chair base plate (2710) may be provided with a folded portion (2711) that wraps around the first floor surface support frame (2720) and the second floor surface support frame (2730), which will be described later, at the front and rear edges. A central cushion (2712) is provided at the center of the upper surface of the chair base plate (2710).

[0112] The first floor support frame (2720) is seated on the lower left area of ​​the chair base plate (2710) and is provided to be slidable in the left and right directions of the chair base plate (2710). The first floor support frame (2720) may include a slider part (2721) and a frame part (2722). The slider part (2721) is movably coupled to the lower left area of ​​the chair base plate (2710). The frame part (2722) is provided in a shape that wraps around the outer side of the left buttocks and is formed to extend from the left end of the slider part (2721), with its tip positioned on the upper part of the chair base plate (2710). The frame part (2722) may be provided in a shape that is bent into a '⊃' shape.

[0113] The second floor support frame (2730) is seated on the lower right area of ​​the chair base plate (2710) and is provided to be slidable in the left and right directions of the chair base plate (2710). The second floor support frame (2730) may include a slider part (2731) and a frame part (2732). The slider part (2731) is movably coupled to the lower right area of ​​the chair base plate (2710). The frame part (2732) is provided in a shape that wraps around the right buttocks from the outside and is formed to extend from the right end of the slider part (2731), with its tip positioned on the upper part of the chair base plate (2710). The frame part (2732) may be provided in a bent shape in the form of a '⊂'.

[0114] The gap adjustment unit (2740) adjusts the gap (= left-right width) between the first floor surface support frame (2720) and the second floor surface support frame (2730). The gap adjustment unit (2740) may be provided in various forms, and as one example, as shown in the drawing, it includes a bevel gearbox (2741), a first shaft (2742), a first long nut (2743), a second shaft (2744), a second long nut (2745), and an adjustment knob (2746).

[0115] The bevel gearbox (2741) includes a first bevel gear (2741a), a second bevel gear (2741b), and a third bevel gear (2741c). The first bevel gear (2741a), the second bevel gear (2741b), and the third bevel gear (2741c) are arranged in a 'T' shape.

[0116] The bevel gear box (2741) is located below the chair base plate (2710). The bevel gear box (2741) may be located in the center of the chair base plate (2710). The bevel gear box (2741) may be attached to the lower surface of the chair base plate (2710).

[0117] The first shaft (2742) is coupled to the first bevel gear (2741a). Threads are formed on the surface of the first shaft (2742). The first shaft (2742) is located below the left area of ​​the chair base plate (2710). The first long nut (2743) is fastened to the threads of the first shaft (2742). The first long nut (2743) is fixed to the first floor support frame (2720). When the first shaft (2742) is rotated clockwise or counterclockwise, the first long nut (2743) fastened to the first shaft (2742) moves to the left or right of the chair base plate (2710) together with the first floor support frame (2720).

[0118] The second shaft (2744) is coupled to the second bevel gear (2741b). Threads are formed on the surface of the second shaft (2744). The second shaft (2744) is located below the right area of ​​the chair base plate (2710). The second long nut (2745) is fastened to the threads of the second shaft (2744). The second long nut (2745) is fixed to the second floor surface support frame (2730). When the second shaft (2744) is rotated clockwise or counterclockwise, the second long nut (2745) fastened to the second shaft (2744) moves to the left or right of the chair base plate (2710) together with the second floor surface support frame (2730).

[0119] The adjustment knob (2746) is coupled to the third bevel gear (2741c). The end of the adjustment knob (2746) may be positioned on the front side of the chair base plate (2710). When the adjustment knob (2746) is rotated clockwise or counterclockwise, power is transmitted to the first bevel gear (2741a) and the second bevel gear (2741b), and the first floor surface support frame (2720) and the second floor surface support frame (2730) move in a direction toward each other or toward each other. The end of the frame portion (2722) of the first floor surface support frame (2720) and the end of the frame portion (2732) of the second floor surface support frame (2730) are located on the upper part of the central cushion (2712), and as the first floor surface support frame (2720) and the second floor surface support frame (2730) move further apart from each other, the area of ​​the central cushion (2712) exposed to the outside increases.

[0120] The first bottom surface (2750) is connected to the frame portion (2722) of the first bottom surface support frame (2720). The first bottom surface (2750) supports the user's left buttocks. The second bottom surface (2760) is connected to the frame portion (2732) of the second bottom surface support frame (2730). The second bottom surface (2760) supports the user's right buttocks.

[0121] The first bottom surface (2750) and the second bottom surface (2760) may be provided with various materials. For example, the first bottom surface (2750) and the second bottom surface (2760) may be provided with materials such as mesh, fabric, leather, and synthetic fibers. Additionally, the first bottom surface (2750) and the second bottom surface (2760) may include a cushion. The first bottom surface (2750) and the second bottom surface (2760) may be provided with the same material as the central cushion (2712).

[0122] Although preferred embodiments of the present invention have been described above, the present invention is not limited thereto and can be implemented with various modifications within the scope of the claims, the detailed description of the invention, and the attached drawings, and it is obvious that such modifications also fall within the scope of the present invention. Explanation of the symbols

[0123] 2100. Balance pad chair according to the first embodiment 2110. Chair base 2111. 1st side roller 2112. Second side roller 2113. 1st Center Roller 2114. 2nd Center Roller 2115. Moving hole 2116. Pin 2117. Moving hole 2118. Pin 2120. First floor surface support frame 2121. First opening 2130. Second floor surface support frame 2131. Second opening 2140. Spacing adjustment unit 2141. Bevel gearbox 2141a. First bevel gear 2141b. Second bevel gear 2141c. Third bevel gear 2142. First shaft 2143. Chapter 1 Nut 2143a. First binding bar 2144. Second shaft 2145. Second nut 2145a. Second binding bar 2146. Adjustment knob 2150. First bottom surface 2160. Second floor surface 2200. Balance pad chair according to the second embodiment 2210. Chair base 2211. Reception Department 2220. First floor surface support frame 2221. Slider Section 2222. Frame section 2223. Uneven parts 2224. 1st Conveyor Roller Section 2230. Second floor surface support frame 2231. Slider Section 2232. Frame section 2233. Uneven parts 2234. Second conveyor roller section 2240. Spacing adjustment unit 2241. Bevel gearbox 2241a. First bevel gear 2241b. Second bevel gear 2241c. Third bevel gear 2242. First shaft 2243. First holder 2243a. First binding bar 2243b. First spring 2244. Chapter 1 Nut 2245. Second shaft 2246. Second holder 2246a. Second binding bar 2246b. Second spring 2247. Second nut 2248. Motor 2250. First bottom surface 2260. Second bottom surface 2300. Balance pad chair according to the third embodiment 2310. Chair base 2311. First side roller 2312. Second side roller 2320. First floor surface support frame 2321. Fixture 2330. Second floor surface support frame 2331. Fixture 2340. Spacing adjustment unit 2341. Bevel gearbox 2341a. First bevel gear 2341b. Second bevel gear 2341c. Third bevel gear 2342. First shaft 2343. First holder 2343b. First spring 2344. Chapter 1 Nut 2345. Second shaft 2346. Second holder 2346b. Second spring 2347. Second long nut 2348. Adjustment knob 2350. First bottom surface 2351. 1st String Section 2360. Second floor surface 2361. Second String Section 2400. Balance pad chair according to the 4th embodiment 2410. Chair base 2420. First floor surface support frame 2421. Slider Section 2422. Frame section 2423. Uneven parts 2430. Second floor surface support frame 2431. Slider Section 2432. Frame section 2433. Uneven parts 2440. Spacing adjustment unit 2441. Bevel gearbox 2441a. First bevel gear 2441b. Second bevel gear 2441c. Third bevel gear 2442. First shaft 2443. First holder 2443a. First binding bar 2443b. First spring 2444. Chapter 1 Nut 2445. Second shaft 2446. Second holder 2446a. Second binding bar 2446b. Second spring 2447. Second long nut 2448. Adjustment knob 2450. First bottom surface 2460. Second bottom surface 2500. Balance pad chair according to the 5th embodiment 2510. Chair base 2511. Component Acceptance Frame 2520. First floor surface support frame 2521. First link 2530. Second floor surface support frame 2531. Second link 2540. Spacing adjustment unit 2541. Bevel gearbox 2541a. First bevel gear 2541b. Second bevel gear 2541c. Third bevel gear 2542. First shaft 2543. First square nut 2544. Second shaft 2545. Second square nut 2546. Adjustment knob 2550. Bottom surface 2600. Balance pad chair according to the 6th embodiment 2610. Chair base 2611. Bending section 2620. First floor surface support frame 2621. Slider Section 2622. Frame section 2630. Second floor surface support frame 2631. Slider Section 2632. Frame section 2640. Spacing adjustment unit 2641. Bevel gearbox 2641a. First bevel gear 2641b. Second bevel gear 2641c. Third bevel gear 2642. First shaft 2643. Chapter 1 Nut 2644. Second shaft 2645. Second nut 2646. Adjustment knob 2650. Bottom surface 2700. Balance pad chair according to the 7th embodiment 2710. Chair base 2711. Bending section 2712. Center cushion 2720. First floor surface support frame 2721. Slider Section 2722. Frame section 2730. Second floor surface support frame 2731. Slider Section 2732. Frame section 2740. Spacing adjustment unit 2741. Bevel gearbox 2741a. First bevel gear 2741b. Second bevel gear 2741c. Third bevel gear 2742. First shaft 2743. Chapter 1 Nut 2744. Second shaft 2745. Second long nut 2746. Adjustment knob 2750. First bottom surface 2760. Second floor surface

Claims

Claim 1 A chair base plate having a first side roller in a left area, a second side roller in a right area, and a first center roller and a second center roller arranged side by side in a central area; a first floor surface support frame having a first opening formed on its inner side, seated on the left area of ​​the upper surface of the chair base plate, and capable of sliding in the left-right direction of the chair base plate; a second floor surface support frame having a second opening formed on its inner side, seated on the right area of ​​the upper surface of the chair base plate, and capable of sliding in the left-right direction of the chair base plate; a gap adjustment unit for adjusting the gap between the first floor surface support frame and the second floor surface support frame; a first floor surface having one end fixed to the left end of the first floor surface support frame and the other end fixed to the inner side of the first floor surface support frame by sequentially passing through the first center roller, the lower surface of the chair base plate, the first side roller, and the first opening; and a first floor surface having one end fixed to the right end of the second floor surface support frame and the other end fixed to the second center roller, the A balance pad chair comprising a lower surface of a chair base plate, a second bottom surface fixed to the inner side of a second bottom surface support frame via the second side roller and the second opening in sequence, wherein the curvature of the first bottom surface changes according to the position of the first bottom surface support frame and the curvature of the second bottom surface changes according to the position of the second bottom surface support frame. Claim 2 A balance pad chair according to claim 1, wherein the gap adjustment unit comprises a first bevel gear, a second bevel gear, and a third bevel gear, a bevel gear box provided on the lower part of the chair base plate, a first shaft coupled to the first bevel gear and having threads formed on its surface, a first long nut fixed to the first floor surface support frame via a first binding bar and fastened to the tip of the first shaft, a second shaft coupled to the second bevel gear and having threads formed on its surface, a second long nut fixed to the second floor surface support frame via a second binding bar and fastened to the tip of the second shaft, and an adjustment knob coupled to the third bevel gear. Claim 3 A balance pad chair according to claim 1, wherein, when viewed from the front of the chair base plate, the first floor surface support frame is provided in a shape where the left end is bent into a '⊃' shape, and when viewed from the front of the chair base plate, the second floor surface support frame is provided in a shape where the right end is bent into a '⊂' shape. Claim 4 A chair base plate, a first floor surface support frame having a first conveyor roller section provided at the bottom and seated in the left area of ​​the upper surface of the chair base plate and capable of sliding in the left-right direction of the chair base plate, a second floor surface support frame having a second conveyor roller section provided at the bottom and seated in the right area of ​​the upper surface of the chair base plate and capable of sliding in the left-right direction of the chair base plate, a gap adjustment unit for adjusting the gap between the first floor surface support frame and the second floor surface support frame, a first floor surface coupled to the first floor surface support frame, and a second floor surface coupled to the second floor surface support frame, wherein the first floor surface support frame includes a slider section movably coupled to the chair base plate, a frame section provided on the upper part of the slider in a form that wraps around the left buttocks, and an uneven section formed at the right end of the frame section, and the second floor surface support frame includes a slider section movably coupled to the chair base plate, a frame section provided on the upper part of the slider section in a form that wraps around the right buttocks, and an uneven section formed at the left end of the frame section. A balance pad chair comprising, wherein the uneven portion of the first floor surface support frame and the uneven portion of the second floor surface support frame are provided in an interlocking structure. Claim 5 In claim 4, the above-mentioned gap adjustment unit comprises a first bevel gear, a second bevel gear, and a third bevel gear, a bevel gear box provided on the lower part of the chair base plate, a first shaft coupled to the first bevel gear and having threads formed on its surface, a first holder fixed to the first floor surface support frame via a first binding bar, a first long nut coupled to the tip of the first shaft and located inside the first holder, a first spring provided between the first holder and the first long nut, a second shaft coupled to the second bevel gear and having threads formed on its surface, a second holder fixed to the second floor surface support frame via a second binding bar, a second long nut coupled to the tip of the second shaft and located inside the second holder, a second spring provided between the second holder and the second long nut, and a motor coupled to the third bevel gear, a balance pad chair. Claim 6 delete Claim 7 A chair base plate having a first side roller in a left area and a second side roller in a right area; a first floor surface support frame coupled to the left area of ​​the chair base plate and capable of sliding in the left-right direction of the chair base plate; a second floor surface support frame coupled to the right area of ​​the chair base plate and capable of sliding in the left-right direction of the chair base plate; a gap adjustment unit for adjusting the gap between the first floor surface support frame and the second floor surface support frame; a first floor surface having one end fixed to the left end of the first floor surface support frame and a first string portion in the center; and a second floor surface having one end fixed to the right end of the second floor surface support frame and a second string portion in the center, wherein the first string portion and the second string portion intersect each other, the other end of the first floor surface passes through the second side roller and is fixed to the second floor surface support frame by a fixing member, and the other end of the second floor surface passes through the first side roller and is fixed to the first Balance pad chair fixed to a floor support frame. Claim 8 In claim 7, the above-mentioned gap adjustment unit comprises a first bevel gear, a second bevel gear, and a third bevel gear, a bevel gear box provided on the lower part of the chair base plate, a first shaft coupled to the first bevel gear and having threads formed on its surface, a first holder fixed to the first floor surface support frame, a first long nut coupled to the tip of the first shaft and located inside the first holder, a first spring provided between the first holder and the first long nut, a second shaft coupled to the second bevel gear and having threads formed on its surface, a second holder fixed to the second floor surface support frame, a second long nut coupled to the tip of the second shaft and located inside the second holder, a first spring provided between the second holder and the second long nut, and an adjustment knob coupled to the third bevel gear, a balance pad chair. Claim 9 In claim 7, the first floor surface support frame and the second floor surface support frame are each provided in a form that wraps around the front edge, the bottom edge, and the rear edge of the chair base plate, a balance pad chair. Claim 10 The chair base plate, a first floor surface support frame coupled to the left area of ​​the chair base plate and capable of sliding in the left-right direction of the chair base plate, a second floor surface support frame coupled to the right area of ​​the chair base plate and capable of sliding in the left-right direction of the chair base plate, a gap adjustment unit for adjusting the gap between the first floor surface support frame and the second floor surface support frame, a first floor surface coupled to the first floor surface support frame, and a second floor surface coupled to the second floor surface support frame, wherein the first floor surface support frame comprises a slider part movably coupled to the chair base plate, a frame part provided on the upper part of the slider in a shape that wraps around the left buttocks, and an uneven part formed at the right end of the frame part, and the second floor surface support frame comprises a slider part movably coupled to the chair base plate, a frame part provided on the upper part of the slider part in a shape that wraps around the right buttocks, and an uneven part formed at the left end of the frame part, and the uneven part of the first floor surface support frame and the uneven part of the second floor surface support frame interlock. Balance pad chair provided as a structure. Claim 11 In claim 10, the above-mentioned gap adjustment unit comprises a first bevel gear, a second bevel gear, and a third bevel gear, a bevel gear box provided on the lower part of the chair base plate, a first shaft coupled to the first bevel gear and having threads formed on its surface, a first holder fixed to the first floor surface support frame, a first long nut coupled to the tip of the first shaft and located inside the first holder, a first spring provided between the first holder and the first long nut, a second shaft coupled to the second bevel gear and having threads formed on its surface, a second holder fixed to the second floor surface support frame, a second long nut coupled to the tip of the second shaft and located inside the second holder, a first spring provided between the second holder and the second long nut, and an adjustment knob coupled to the third bevel gear, a balance pad chair. Claim 12 delete Claim 13 A balance pad chair comprising: a chair base plate; a first floor surface support frame, the lower end of which is hinged to the left side of the upper surface of the chair base plate; a second floor surface support frame, the lower end of which is hinged to the right side of the upper surface of the chair base plate; a first link, one end of which is hinged to the first floor surface support frame and the other end of which is located at the bottom of the chair base plate; a second link, one end of which is hinged to the second floor surface support frame and the other end of which is located at the bottom of the chair base plate; a spacing adjustment unit for adjusting the spacing between the other end of the first link and the other end of the second link; and a floor surface, one side in the width direction of which is connected to the first floor surface support frame and the other side in the width direction of which is connected to the second floor surface support frame. Claim 14 In claim 13, the above-mentioned gap adjustment unit comprises a first bevel gear, a second bevel gear, and a third bevel gear, a bevel gear box provided on the lower part of the chair base plate, a first shaft coupled to the first bevel gear and having threads formed on its surface, a first square nut coupled to the first shaft and having its outer side hinged to the other end of the first link, a second shaft coupled to the second bevel gear and having threads formed on its surface, a second square nut coupled to the second shaft and having its outer side hinged to the other end of the second link, and an adjustment knob coupled to the third bevel gear, a balance pad chair. Claim 15 A balance pad chair according to claim 13, comprising a component receiving frame provided on the lower surface of the chair base plate, wherein the spacing adjustment unit is located inside the component receiving frame. Claim 16 A balance pad chair comprising a chair base plate, a first floor surface support frame coupled to the left area of ​​the chair base plate and capable of sliding in the left-right direction of the chair base plate, a second floor surface support frame coupled to the right area of ​​the chair base plate and capable of sliding in the left-right direction of the chair base plate, a gap adjustment unit for adjusting the gap between the first floor surface support frame and the second floor surface support frame, and a floor surface having one side in the width direction coupled to the first floor surface support frame and the other side in the width direction coupled to the second floor surface support frame, wherein the curvature of the floor surface changes according to the gap between the first floor surface support frame and the second floor surface support frame. Claim 17 In claim 16, the above-mentioned gap adjustment unit comprises a first bevel gear, a second bevel gear, and a third bevel gear, a bevel gear box provided on the lower part of the chair base plate, a first shaft coupled to the first bevel gear and having threads formed on its surface, a first long nut fixed to the first floor support frame and fastened to the tip of the first shaft, a second shaft coupled to the second bevel gear and having threads formed on its surface, a second long nut fixed to the second floor support frame and fastened to the tip of the second shaft, and an adjustment knob coupled to the third bevel gear, a balance pad chair. Claim 18 A balance pad chair according to claim 16, wherein the first floor surface support frame comprises a slider part movably coupled to the chair base plate and a frame part provided at the left end of the slider, and the second floor surface support frame comprises a slider part movably coupled to the chair base plate and a frame part provided at the left end of the slider. Claim 19 A chair base plate; a first floor surface support frame coupled to the left area of ​​the chair base plate and capable of sliding in the left-right direction of the chair base plate; a second floor surface support frame coupled to the right area of ​​the chair base plate and capable of sliding in the left-right direction of the chair base plate; a gap adjustment unit for adjusting the gap between the first floor surface support frame and the second floor surface support frame; a first floor surface coupled to the first floor surface support frame; and a second floor surface coupled to the second floor surface support frame, wherein a central cushion is provided on the upper surface of the chair base plate; the first floor surface support frame comprises a slider part movably coupled to the lower left area of ​​the chair base plate; and a frame part extending from the left end of the slider in a shape that wraps around the left buttocks, with the front end positioned on the upper part of the chair base plate; and the second floor surface support frame comprises a slider part movably coupled to the lower right area of ​​the chair base plate; and a frame part extending from the right end of the slider in a shape that wraps around the right buttocks, with the front end positioned on the upper part of the chair base plate. Balance pad chair including a frame part. Claim 20 In claim 19, the above-mentioned gap adjustment unit comprises a first bevel gear, a second bevel gear, and a third bevel gear, a bevel gear box provided on the lower part of the chair base plate, a first shaft coupled to the first bevel gear and having threads formed on its surface, a first long nut fixed to the first floor support frame and fastened to the tip of the first shaft, a second shaft coupled to the second bevel gear and having threads formed on its surface, a second long nut fixed to the second floor support frame and fastened to the tip of the second shaft, and an adjustment knob coupled to the third bevel gear, a balance pad chair. Claim 21 delete

Images