Balance pad chair

Abstract

A balance pad chair is provided. The balance pad chair comprises: i) a chair bottom plate; ii) a first bottom support frame of which the position is changed horizontally or vertically in a left area of the chair bottom plate; iii) a second bottom support frame of which the position is changed horizontally or vertically in a right area of the chair bottom plate; and iv) a gap-adjusting unit for simultaneously changing the positions of the first bottom support frame and the second bottom support frame. The balance pad chair can allow a proper sitting position to be maintained and reduce body fatigue caused by the use of the chair, and prevents and relieves numbness in the legs, pain in the buttocks, pain in the hip joint and the knees, and the like, and symptoms caused by compression of the blood vessels, muscles and skin.

Description

Balance pad chair

[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.

[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.

[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.

[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.

[0008] As such, the balance pad chair according to various embodiments of the present invention supports the bottom surface and the 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 function to adjust 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 having the following effects.

[0009] It can help prevent pelvic imbalance, maintain proper sitting posture and body balance, and reduce physical fatigue caused by prolonged chair use.

[0010] It can help prevent and alleviate symptoms such as leg numbness, lower back pain, hip pain, and pain in the hips and knees.

[0011] It can improve blood vessel, muscle, and skin compression, as well as blood circulation disorders caused by blood vessel compression.

[0012] It can help prevent and correct the widening of the hips and pelvis caused by prolonged sitting or childbirth.

[0013] FIG. 1 is a schematic drawing showing the appearance of a balance pad chair according to a first embodiment of the present invention.

[0014] FIG. 2 is a schematic diagram showing the other end of the first bottom surface being wound onto the first side roller.

[0015] Figure 3 is a schematic diagram showing a cross-section along the line AA' of Figure 1.

[0016] FIG. 4 is a schematic drawing showing the front view of a balance pad chair according to the first embodiment.

[0017] FIG. 5 is a diagram schematically showing the coupling relationship between the main components of a balance pad chair according to the first embodiment.

[0018] FIG. 6 is a schematic drawing showing the appearance of a balance pad chair according to a second embodiment of the present invention.

[0019] Figure 7 is a schematic drawing showing the frame portion and the uneven portion of the first bottom surface support frame.

[0020] FIG. 8 is a schematic drawing showing the first bottom surface combined with the frame portion of FIG. 7.

[0021] Figure 9 is a schematic diagram showing a cross-section along the line AA' of Figure 6.

[0022] FIG. 10 is a diagram schematically showing the coupling relationship between the main components of a balance pad chair according to a second embodiment.

[0023] FIG. 11 is a schematic drawing showing the appearance of a balance pad chair according to a third embodiment of the present invention.

[0024] FIG. 12 is a schematic diagram showing the other end of the second bottom surface being wound onto the first side roller.

[0025] Figure 13 is a schematic diagram showing a cross-section along the line AA' of Figure 11.

[0026] FIG. 14 is a diagram schematically showing the coupling relationship between the main components of a balance pad chair according to a third embodiment.

[0027] FIG. 15 is a schematic drawing showing the appearance of a balance pad chair according to the fourth embodiment of the present invention.

[0028] FIG. 16 is a schematic drawing showing the appearance of the first bottom surface support frame.

[0029] Figure 17 is a schematic diagram showing a cross-section along the line AA' of Figure 15.

[0030] FIG. 18 is a diagram schematically showing the coupling relationship between the main components of a balance pad chair according to the fourth embodiment.

[0031] FIG. 19 is a schematic drawing showing the appearance of a balance pad chair according to the fifth embodiment of the present invention.

[0032] FIG. 20 is a schematic diagram showing a cross-section along the line AA' of FIG. 19.

[0033] FIG. 21 is a schematic diagram showing a cross-section along the BB' line of FIG. 19.

[0034] FIG. 22 is a diagram schematically showing the coupling relationship between the main components of a balance pad chair according to the fifth embodiment.

[0035] FIG. 23 is a schematic drawing showing the appearance of a balance pad chair according to the 6th embodiment of the present invention.

[0036] FIG. 24 is a schematic diagram showing a cross-section along the line AA' of FIG. 23.

[0037] FIG. 25 is a diagram schematically showing the coupling relationship between the main components of a balance pad chair according to the 6th embodiment.

[0038] FIG. 26 is a schematic drawing showing the appearance of a balance pad chair according to the seventh embodiment of the present invention.

[0039] FIG. 27 is a schematic drawing showing the frame portion of the first bottom surface support frame.

[0040] FIG. 28 is a schematic drawing showing the first bottom surface combined with the frame portion of FIG. 27.

[0041] FIG. 29 is a schematic diagram showing the central cushion of FIG. 26.

[0042] FIG. 30 is a schematic diagram showing a cross-section along the line AA' of FIG. 26.

[0043] FIG. 31 is a diagram schematically showing the coupling relationship between the main components of a balance pad chair according to the seventh embodiment.

[0044] FIG. 32 is a perspective view of a balance pad chair according to the eighth embodiment of the present invention, viewed from the front upper side.

[0045] FIG. 33 is a perspective view illustrating the combined relationship of the chair base plate, floor cushion, pad cushion, and pad frame with the front part opened in FIG. 32.

[0046] FIG. 34 is a diagram showing the configuration of a power transmission unit connecting the chair base plate and the pad frame of FIG. 33.

[0047] FIG. 35 is a diagram showing the connection relationship between the chair base plate, floor cushion, pad cushion, and pad frame in a balance pad chair according to the ninth embodiment of the present invention, and the configuration of the power transmission unit connecting the chair base plate and the pad frame.

[0048] FIG. 36 is a diagram showing the connection relationship between the pad cushion and the movement guide, the chair base plate and the pad frame, and the power transmission unit connecting the chair base plate and the pad frame in a balance pad chair according to the 10th embodiment of the present invention.

[0049] FIG. 37 is a diagram showing the connection relationship between the chair base plate, the floor cushion, the pad cushion, and the pad cushion band in a balance pad chair according to the 11th embodiment of the present invention, and the configuration of the power transmission unit connecting the chair base plate and the pad cushion band.

[0050] FIG. 38 is a diagram showing the connection relationship between the pad cushion, the chair base plate, and the pad frame, and the configuration of the power transmission unit connecting the chair base plate and the pad frame in a balance pad chair according to the 12th embodiment of the present invention.

[0051] FIG. 39 is a diagram showing the configuration of the combined relationship of the chair base plate, floor cushion, pad cushion, and pad frame in a balance pad chair according to the 13th embodiment of the present invention.

[0052] Figure 40 is a diagram showing the connection state of a pair of guide bars.

[0053] FIG. 41 shows a balance pad chair according to the 14th embodiment of the present invention viewed from the front upper side.

[0054] FIG. 42 is a diagram showing the connection relationship between the chair base plate, floor cushion, pad cushion, and pad support plate, and the configuration of the lifting member and height adjustment member connecting the chair base plate and the pad support plate in a balance pad chair according to the 14th embodiment of the present invention with an open front.

[0055] FIG. 43 is a diagram showing the combined relationship of the chair base plate, floor cushion, pad cushion, and pad support plate, and the configuration of the lifting member and height adjustment member connecting the chair base plate and the pad support plate in a balance pad chair according to the 15th embodiment of the present invention.

[0056] FIG. 44 is a diagram showing the combined relationship of the chair base plate, floor cushion, pad cushion, and pad support plate, and the configuration of the lifting member and height adjustment member connecting the chair base plate and the pad support plate in a balance pad chair according to the 16th embodiment of the present invention.

[0057] FIG. 45 is a diagram showing the combined relationship of the chair base plate, floor cushion, pad cushion, and pad support plate, and the configuration of the lifting member and height adjustment member connecting the chair base plate and the pad support plate in a balance pad chair according to the 17th embodiment of the present invention.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] Balance pad chair (2100) according to the first embodiment

[0072] 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.

[0073] 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).

[0074] 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.

[0075] 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 '⊃'.

[0076] 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 '⊂'.

[0077] 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).

[0078] 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).

[0079] 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).

[0080] 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).

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] Balance pad chair (2200) according to the second embodiment

[0086] 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.

[0087] 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).

[0088] 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).

[0089] 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.

[0090] 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.

[0091] 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).

[0092] 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).

[0093] 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.

[0094] 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.

[0095] 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).

[0096] 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.

[0097] Balance pad chair (2300) according to the third embodiment

[0098] 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.

[0099] 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).

[0100] 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).

[0101] 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).

[0102] 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).

[0103] 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).

[0104] 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).

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] 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).

[0110] 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.

[0111] Balance pad chair (2400) according to the fourth embodiment

[0112] 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.

[0113] 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).

[0114] The chair base plate (2410) has a predetermined area. The chair base plate (2410) can be provided in a flat shape.

[0115] 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.

[0116] 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.

[0117] 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).

[0118] 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).

[0119] 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.

[0120] 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.

[0121] 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.

[0122] 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.

[0123] Balance pad chair (2500) according to the 5th embodiment

[0124] 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.

[0125] 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).

[0126] 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).

[0127] 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.

[0128] 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.

[0129] 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.

[0130] 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.

[0131] 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).

[0132] 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.

[0133] 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).

[0134] 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).

[0135] 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).

[0136] 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.

[0137] 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.

[0138] Balance pad chair (2600) according to the 6th embodiment

[0139] FIG. 23 is a schematic drawing showing the exterior of a balance pad chair (2600) according to the 6th embodiment of the present invention, FIG. 24 is a schematic drawing showing a cut 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 6th embodiment.

[0140] 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).

[0141] 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.

[0142] 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).

[0143] 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).

[0144] 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).

[0145] 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.

[0146] 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).

[0147] 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).

[0148] 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).

[0149] 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.

[0150] 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.

[0151] 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.

[0152] Balance pad chair (2700) according to the 7th embodiment

[0153] 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.

[0154] 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).

[0155] 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).

[0156] 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 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 at the left end of the slider part (2721). The frame part (2722) may be provided in a bent shape in the form of a '⊃'.

[0157] The second floor support frame (2730) is seated on the right side of the lower surface 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 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 at the right end of the slider part (2731). The frame part (2732) may be provided in a bent shape in the form of a '⊂'.

[0158] 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).

[0159] 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.

[0160] 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).

[0161] 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).

[0162] 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).

[0163] 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.

[0164] 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.

[0165] 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).

[0166] Balance pad chair (1) according to the 8th embodiment

[0167] FIG. 32 is a perspective view of a balance pad chair according to the eighth embodiment of the present invention viewed from the upper front side, FIG. 33 is a perspective view showing the combined relationship of a chair base plate, a floor cushion, a pad cushion, and a pad frame with the front part opened in FIG. 32, and FIG. 34 is a diagram showing the configuration of a power transmission unit connecting the chair base plate and the pad frame of FIG. 33.

[0168] Referring to FIGS. 32 to 34, the balance pad chair (1) of the eighth embodiment includes a separator (10), a pair of chair base plates (21, 22), a pair of floor cushions (31, 32), a pair of pad cushions (41, 42), a pad frame (51, 52), and a power transmission unit (60).

[0169] In the balance pad chair (1), the pad frame (51, 52) and the power transmission unit (60) are embedded in the central part (CT) of the chair base. The chair base has a pad cushion (41, 42) in the central part (CT), a front part (FR) in front of the central part (CT), and a rear part (RR) in the rear of the central part (CT). The width of the central part (CT) in the front-rear direction may be formed narrower or wider than the ratio shown in the drawing.

[0170] A divider (10) is provided in the center of the left and right directions (hereinafter, based on the drawing). A pair of chair base plates (21, 22) are provided separately on the left and right sides of the divider (10). The balance pad chair (1) is provided with a front section (FR), a central section (CT), and a rear section (RR), and a pad cushion (41, 42) and a pad frame (51, 52) are provided only in the central section (CT). A pair of chair base plates (21, 22) are naturally formed integrally over the entire front section (FR), central section (CT), and rear section (RR), and form the left and right sides through a through hole (H) in the central section (CT). Accordingly, regarding the pad cushions (41, 42) and pad frames (51, 52), when looking at FIG. 33 and FIG. 34, the chair base plates located on the left and right sides of the through hole (H) are referred to as a pair of chair base plates (21, 22) for convenience. A pair of floor cushions (31, 32) are each placed on the chair base plates (21, 22). The pair of floor cushions (31, 32) are naturally formed integrally over the entire front section (FR), central section (CT), and rear section (RR), and form the left and right sides through the through hole (H2) from the central section (CT). Accordingly, regarding the pad cushions (41, 42) and pad frames (51, 52), when looking at FIG. 33 and FIG. 34, the floor cushions located on the left and right sides of the through hole (H2) are referred to as a pair of floor cushions (31, 32) for convenience. A pair of pad cushions (41, 42) are placed on the floor cushions (31, 32) and separated left and right with respect to the divider (10), and each has left and right sides (411, 421) that provide pressure support to the sides of the buttocks.

[0171] The pad frames (51, 52) are configured to support both the left and right sides of the pad cushions (41, 42) and to move in the left and right directions on the chair base plates (21, 22). The power transmission unit (60) is configured to connect the chair base plates (21, 22) and the pad frames (51, 52). For example, the pad frames (51, 52) are provided with a partition plate (501) that divides the upper and lower directions.

[0172] The pad frame (51, 52) supports the pad cushion (41, 42) on the upper side of the partition plate (501) and moves in the left and right directions, and at this time, the bottom cushion (31, 32) can be maintained in a fixed state on the lower side of the partition plate (501).

[0173] More specifically, the divider (10) is positioned in the center with respect to the left and right directions when the user sits on the chair. A pair of chair base plates (21, 22) are provided on the left and right sides spaced apart from the divider (10) to support the user's weight.

[0174] A pair of floor cushions (31, 32) are separated and placed on a pair of chair base plates (21, 22) to absorb the user's weight and transfer it to each chair base plate (21, 22). A pair of pad cushions (41, 42) are separated and placed on a pair of floor cushions (31, 32) to primarily absorb the user's weight and transfer it to the pair of floor cushions (31, 32).

[0175] A pair of pad cushions (41, 42) are each equipped with left and right sides (411, 421), so they are configured to support the lower side of the user's buttocks while pushing the sides of the buttocks inward in the left and right directions or not. The left and right sides (411, 421) of the pad cushions (41, 42) can be adjusted according to the user's body shape.

[0176] A pair of pad cushions (41, 42) can be moved in the left and right directions on the left and right sides of the separator (10), and are formed longer on the side of the separator (10) so as to handle the remaining parts when the distance between them is close and supply when they are far apart.

[0177] To this end, the pad frames (51, 52) support the left and right sides of the pad cushions (41, 42) and are coupled to the chair base plates (21, 22) so as to be movable in the left and right directions. Although not illustrated, the pad frames (51, 52) may move along a movement space or guide formed in the chair base plates (21, 22), and this configuration is not particularly limited.

[0178] Additionally, the balance pad chair (1) may further include pad cushion receiving portions (71, 72). The pad cushion receiving portions (71, 72) are formed extending horizontally from the lower side of the chair base plate (21, 22) between the divider (10) and the chair base plate (21, 22).

[0179] Accordingly, while the pad cushion (41, 42) is being moved left and right by the pad frame (51, 52), when the distance between the left and right sides (411, 421) of the pad cushion (41, 42) becomes closer to each other, the remaining portion is received in the pad cushion receiving portion (71, 72), and when the distance between the left and right sides (411, 421) of the pad cushion (41, 42) becomes farther apart, the portion that was received in the pad cushion receiving portion (71, 72) and remained can be supplied.

[0180] The power transmission unit (60) connects the chair base plate (21, 22) and the pad frame (51, 52), enabling movement of the pad frame (51, 52). Depending on the use of the power transmission unit (60), the left and right sides (411, 421) of the pad cushion (41, 42) can be selected to suit the user's body shape or used as a general chair.

[0181] For example, the power transmission unit (60) includes a motor (63) having a pair of rotating shafts (61, 62), a holder (64), and a long nut (66) that accommodates an elastic member (65). The rotating shafts (61, 62) and the motor (63) are installed on a bracket (67) provided on the lower side of the chair base plate (21, 22).

[0182] A pair of rotating shafts (61, 62) are installed in the left-right direction on the lower side of the chair base plate (21, 22). A motor (63) is configured to be connected to the rotating shafts (61, 62) in the left-right direction so as to be rotated. A pair of rotating shafts (61, 62) have screws (611, 621) formed at their ends.

[0183] The holder (64) is fixedly installed on the lower side of the pad frame (51, 52). The long nut (66) is coupled in a structure that does not rotate within the holder (64) and is screw-coupled with the screw (611, 621), so that their lengths can be adjusted. The long nut (66) is installed in the holder (64) as an elastic support structure by accommodating an elastic member (65) in the direction of the rotation axis (61, 62).

[0184] When using the left and right side functions of the pad cushion (41, 42), the long nut (66) and the elastic member (65) allow the left and right sides (411, 421) to be continuously pushed toward the user's buttocks side by the elastic support force of the elastic member (65), in addition to being used according to the user's body shape.

[0185] In this way, the balance pad chair (1) of the eighth embodiment supports the buttocks with pad cushions (41, 42) and left and right sides (411, 421), thereby supporting the load pressure that causes the buttocks to deviate in the left and right lateral directions, so that the load on the buttocks is efficiently distributed and absorbed, and the balance of the buttocks and the spine and pelvis can be maintained. That is, one embodiment allows the user to use it according to their body shape.

[0186] Further embodiments of the present invention are described below. Compared to the configuration of the eighth embodiment and other previously described embodiments, descriptions of identical configurations are omitted, and descriptions of different configurations are provided.

[0187] Balance pad chair (2) according to the ninth embodiment

[0188] FIG. 35 is a diagram showing the connection relationship between the chair base plate, floor cushion, pad cushion, and pad frame in a balance pad chair according to the ninth embodiment of the present invention, and the configuration of the power transmission unit connecting the chair base plate and the pad frame.

[0189] Referring to FIG. 35, in the balance pad chair (2) of the ninth embodiment, the chair base plate (21, 22) is integrally provided with a roller support (212, 222) that is bent and protrudes downward, and the pad frame (51, 52) is provided with a roller (511, 521). That is, the roller (511, 521) is installed on the pad frame (51, 52) and rolls along the upper surface of the chair base plate (21, 22), that is, the upper surface of the roller support (212, 222).

[0190] For example, the power transmission unit (260) includes a motor (63) connecting a pair of rotating shafts (61, 62) with a bevel gear (68) and a long nut (266). Depending on the use of the power transmission unit (260), the left and right sides (411, 421) of the pad cushion (41, 42) can be selected for use that fits the user's body shape or can be used as a general chair.

[0191] A pair of rotating shafts (61, 62) are installed in the left-right direction on the lower side of the chair base plate (21, 22). A bevel gear (68) connected to a motor (63) is configured to be connected to the rotating shafts (61, 62) in the left-right direction so as to be rotated. A pair of rotating shafts (61, 62) have screws (611, 621) formed at their ends.

[0192] The long nut (266) is installed on the lower side of the chair base plate (21, 22) opposite the motor (63), is coupled to the screw (611, 621) of the rotation shaft (61, 62) to be rotatably supported, and is connected to the pad frame (51, 52). That is, the pad frame (51, 52) can move left and right depending on the left and right movement of the long nut (266). Various connection structures can be formed between the long nut (266) and the pad frame (51, 52).

[0193] That is, when the bevel gear (68) rotates due to the driving of the motor (63), the rotation shaft (61, 62) rotates, and since the screw (611, 621) is screwed into the long nut (266), the lengths of each other can be adjusted, and accordingly, the spacing of the left and right sides (411, 421) of the pad frame (51, 52) is adjusted. The long nut (66) uses the function of the left and right sides (411, 421) of the pad cushion (41, 42) to fit the user's body shape.

[0194] The rolling coupling of the roller support (212, 222) of the chair base plate (21, 22) and the roller (511, 521) of the pad frame (51, 52) makes it easier for the pad frame (51, 52) and the pad cushion (41, 42) to move left and right.

[0195] Balance pad chair (3) according to the 10th embodiment

[0196] FIG. 36 is a diagram showing the connection relationship between the pad cushion and the movement guide, the chair base plate and the pad frame, and the power transmission unit connecting the chair base plate and the pad frame in a balance pad chair according to the 10th embodiment of the present invention.

[0197] Referring to FIG. 36, the balance pad chair (3) of the 10th embodiment removes the floor cushions (31, 32) of the 8th embodiment and is equipped with movable guides (331, 332). Accordingly, a pair of pad cushions (41, 42) coupled to the lower surface of a pair of movable guides (331, 332) are each placed on the chair base plate (21, 22), separated left and right with respect to the separator (10), and each is equipped with left and right sides (411, 421).

[0198] The pad cushion receiving portion (271, 272) is formed to extend vertically from the lower side of the chair base plate (21, 22) between the separator (10) and the chair base plate (21, 22). Accordingly, while the pad cushion (41, 42) is moved left and right by the pad frame (51, 52), when the distance between the left and right sides (411, 421) of the pad cushion (41, 42) becomes closer to each other, the remaining portion is received vertically in the pad cushion receiving portion (271, 272), and when the distance between the left and right sides (411, 421) of the pad cushion (41, 42) becomes farther apart, the portion that was received in the pad cushion receiving portion (271, 272) and remained can be supplied vertically.

[0199] A roller support (212, 222) that is bent and protrudes downward from the chair base plate (21, 22) is integrally provided, and the roller support (212, 222) rotatably accommodates a roller (511, 521). That is, since the roller (511, 521) is installed on the chair base plate (21, 22) within the roller support (212, 222), the pad frame (51, 52) rolls on the roller (511, 521).

[0200] The power transmission unit (360) includes a pair of motors (631, 632) each connected to a pair of rotating shafts (61, 62) and a long nut (266). Depending on the use of the power transmission unit (360), the left and right sides (411, 421) of the pad cushion (41, 42) can be selected for use that fits the user's body shape or can be used as a general chair.

[0201] A pair of rotating shafts (61, 62) are installed in the left-right direction on the lower side of the chair base plate (21, 22). A pair of motors (631, 632) are configured to be connected to the rotating shafts (61, 62) in the left-right direction so as to be rotated. A screw (611, 621) is formed at the end of the pair of rotating shafts (61, 62).

[0202] A long nut (266) is installed on the lower side of the chair base plate (21, 22) on the opposite side of a pair of motors (631, 632), is coupled to the screw (611, 621) of the rotation shaft (61, 62) to support rotation, and is connected to the pad frame (51, 52). That is, the pad frame (51, 52) can be moved left and right according to the left and right movement of the long nut (266).

[0203] That is, the rotation shaft (61, 62) rotates by driving a pair of motors (631, 632), and the screw (611, 621) is screwed into the long nut (266 of the height adjustment member), so that their lengths can be adjusted, and accordingly, the spacing between the left and right sides (411, 421) of the pad frame (51, 52) is adjusted. The left and right sides (411, 421) of the pad cushion (41, 42) allow the user to choose a use that fits their body shape or use it as a general chair.

[0204] When a pair of pad cushions (41, 42) with a moving guide (331, 332) attached to the lower surface of the pad cushions (41, 42) are moved left and right, the pad cushions (41, 42) and the moving guide (331, 332) are supported by rolling on rollers (511, 521) installed on the chair base plate (21, 22), and are bent at the connection point between the horizontal chair base plate (21, 22) and the vertical pad cushion receiving part (271, 272), thereby allowing the pad cushions (41, 42) to flexibly flow into and out of the pad cushion receiving part (271, 272). For example, the moving guide (331, 332) is formed by connecting multiple plate materials in a strip shape so as to absorb the difference between the inner curvature and the outer curvature at the connection point.

[0205] Balance pad chair (4) according to the 11th embodiment

[0206] FIG. 37 is a diagram showing the connection relationship between the chair base plate, the floor cushion, the pad cushion, and the pad cushion band in a balance pad chair according to the 11th embodiment of the present invention, and the configuration of the power transmission unit connecting the chair base plate and the pad cushion band.

[0207] Referring to FIG. 37, in the balance pad chair (4) of the 11th embodiment, pad cushion bands (413, 423) are further provided on the pad cushions (41, 42) of the 8th embodiment. The pad cushion bands (413, 423) are connected to the pad cushions (41, 42) and positioned below the chair base plates (21, 22).

[0208] The power transmission unit (460) connects the chair base plate (21, 22) and the pad cushion band (413, 423) to enable the pad cushion (41, 42) to move in the left and right directions on the chair base plate (21, 22).

[0209] The pad cushion (41, 42) of the 11th embodiment forms a structure that wraps around the floor cushion (31, 32) and the chair base plate (21, 22) so as to allow relative movement. The chair base plate (21, 22) is provided with a slide rail (213, 223) on its lower surface to facilitate the movement of the pad cushion (41, 42) and the pad cushion band (413, 423) from the floor cushion (31, 32).

[0210] For example, the power transmission unit (460) includes a motor (63), a holder (464), and a guide (466) each connected to a pair of rotating shafts (61, 62). The rotating shafts (61, 62) and the motor (63) are installed on a bracket (67) provided on the lower side of the chair base plate (21, 22).

[0211] A pair of rotating shafts (61, 62) are installed in the left-right direction on the lower side of the chair base plate (21, 22). A motor (63) is configured to be connected to the rotating shafts (61, 62) in the left-right direction so as to be rotated. The pair of rotating shafts (61, 62) form screws (611, 621).

[0212] The holder (464) is installed on the lower side of the chair base plate (21, 22) opposite the motor (63) to rotatably support the end of the rotation shaft (61, 62). The guide (466) is slidably coupled to the slide rail (213, 223) and screw-coupled to the screw (611, 621) formed on the rotation shaft (61, 62).

[0213] That is, the rotation shaft (61, 62) rotates by the driving of the motor (63), and the guide (466) moves because the screw (611, 621) is screw-coupled to the guide (466). As the pad cushion band (413, 423) fixed to the guide (466) moves, the spacing of the left and right sides (411, 421) of the pad cushion (41, 42) is adjusted. The guide (466) is fitted to the user's body shape by using the left and right side functions of the pad cushion (41, 42).

[0214] The combination of the slide rail (213, 223) of the chair base plate (21, 22) and the guide (466) of the pad cushion band (413, 423) makes it easier for the pad cushion (41, 42) to move left and right.

[0215] Balance pad chair (5) according to the 12th embodiment

[0216] FIG. 38 is a diagram showing the connection relationship between the pad cushion, the chair base plate, and the pad frame, and the configuration of the power transmission unit connecting the chair base plate and the pad frame in a balance pad chair according to the 12th embodiment of the present invention.

[0217] Referring to FIG. 38, in the balance pad chair (5) of the 12th embodiment, the chair base plate (23) is formed as one and the floor cushion (33) is formed as one and placed on the chair base plate (23). A pair of pad cushions (541, 542) are placed on both ends of the floor cushion (33), separated left and right, and each have left and right sides (411, 421).

[0218] The pad frames (51, 52) are configured to support both the left and right sides of the pad cushions (541, 542) and to move in the left and right directions on the chair base plate (23). For example, the pad frames (51, 52) are provided with a partition plate (501) that divides the upper and lower directions.

[0219] The pad frame (51, 52) supports the pad cushion (541, 542) on the upper side of the partition plate (501) and moves in the left and right directions, and at this time, the bottom cushion (33) can be maintained in a fixed state on the lower side of the partition plate (501).

[0220] The power transmission unit (560) connects the chair base plate (23) and the pad frame (51, 52) to enable the pad cushion (541, 542) to move left and right on the chair base plate (23) and the floor cushion (33).

[0221] For example, the power transmission unit (560) includes a control knob (563), a holder (64), and a long nut (66) that connect a pair of rotating shafts (61, 62) with a bevel gear (68). The pair of rotating shafts (61, 62) form screws (611, 621) at their ends.

[0222] The holder (64) is fixedly installed on the lower side of the pad frame (51, 52). The long nut (66) is coupled in a structure that does not rotate within the holder (64) and is screw-coupled with the screw (611, 621), so that their lengths can be adjusted. The long nut (66) is installed in the holder (64) in a structure that is elastically supported by accommodating an elastic member (65) in the direction of the rotation axis (61, 62).

[0223] Balance pad chair (6) according to the 13th embodiment

[0224] FIG. 39 is a diagram showing the configuration of the combined relationship of a chair base plate, a floor cushion, a pad cushion, and a pad frame in a balance pad chair according to the 13th embodiment of the present invention, and FIG. 40 is a diagram showing the connection state of a pair of guide bars. Referring to FIG. 39 and FIG. 40, in the balance pad chair (6) of the 13th embodiment, the chair base plate (23) is formed as one, and the floor cushion (33) is formed as one and placed on the chair base plate (23). A pair of pad cushions (541, 542) are placed on both ends of the floor cushion (33), separated left and right, and each have left and right sides (411, 421).

[0225] The pad frame (251, 252) is configured to support both the left and right sides of the pad cushion (541, 542) and to move in the left and right directions on the chair base plate (23). For example, the pad frame (251, 252) is provided with a partition plate (501) that divides the upper and lower directions.

[0226] The balance pad chair (6) of the 13th embodiment further includes a pair of guide bars (241, 242) that are installed on the lower side of the chair base plate (23) and move in the left and right directions. Pad frames (251, 252) are each mounted on the guide bars (241, 242) to support both the left and right sides of the pad cushions (541, 542) and rotate with the guide bars (241, 242).

[0227] Accordingly, the pad frame (251, 252) supports both the left and right sides of the pad cushion (541, 542) and is mounted on a guide bar (241, 242) provided on the lower side of the chair base plate (23) so that it can rotate upward or return.

[0228] Additionally, a pair of guide bars (241, 242) are each connected to both sides of a connecting line (STR) through a fixing member (FM1, FM2), and the connecting line (STR) is supported by being caught on rollers (RL1, RL2) on both sides. Therefore, even when moving either side of the pair of guide bars (241, 242), the pair of guide bars (241, 242) move the same distance from each other, that is, move symmetrically.

[0229] The pad frame (251, 252) is provided with a stopper (255) on the lower surface of the left and right sides (in the drawing), and the chair base plate (23) is provided with stopper holes (231) that are optionally coupled to the stopper (255).

[0230] When the pad frame (251, 252) is manually lifted from the chair base plate (23), the pad frame (251, 252) rotates around the guide bar (241, 242) and the stopper (255) is separated from the stopper holes (231).

[0231] The pad frames (251, 252) and guide bars (241, 242) are moved by the same distance in the left and right directions. As the pad cushions (541, 542) supported by the pad frames (251, 252) are moved left and right, the spacing of the left and right sides (411, 421) is adjusted.

[0232] When the pad frame (251, 252) is manually lowered onto the chair base plate (23), the pad frame (251, 252) rotates in reverse around the guide bar (241, 242), and the stopper (255) engages with the stopper holes (231). In this way, the pad frame (251, 252) and the guide bar (241, 242) adapt to the user's body shape by utilizing the left and right side (411, 421) functions of the pad cushion (541, 542).

[0233] Balance pad chair (7) according to the 14th embodiment

[0234] FIG. 41 shows a balance pad chair according to the 14th embodiment of the present invention viewed from the front upper side, and FIG. 42 is a diagram showing the connection relationship between the chair base plate, floor cushion, pad cushion, and pad support plate, and the configuration of the lifting member and height adjustment member connecting the chair base plate and the pad support plate in the balance pad chair according to the 14th embodiment of the present invention with the front open.

[0235] Referring to FIG. 41 and FIG. 42, the balance pad chair (7) of the 14th embodiment includes a chair base plate (701), a floor cushion (72), a pair of pad support plates (731, 732), a pad cushion (741, 742), a lifting member (75), a support (76), and a height adjustment member (77).

[0236] A pair of pad support plates (731, 732) are connected to both ends of the chair base plate (701) by hinged connecting plates (711, 712), so that they can pivot upward from both ends of the chair base plate (701).

[0237] The pad cushions (741, 742) are connected to both ends of the floor cushion (72) to form a single unit. Substantially, the pad cushions (741, 742) are left and right side areas, and the floor cushion (72) represents the central area in the left and right directions.

[0238] The floor cushion (72) is placed on the chair base plate (701), and the pad cushion (741, 742) is placed on the pad support plate (731, 732). The lifting member (75) is configured to be able to lift up and down in a vertical direction and is installed on the lower side of the chair base plate (701).

[0239] One end of the support member (76) is connected to the lifting member (75) and the other end is connected to the pad support plate (731, 732) by a hinge. The height adjustment member (77) is configured to adjust the height of the lifting member (75).

[0240] For example, the lifting member (75) can be formed as a gas cylinder and connected to the support (76) by a hinge. The height adjustment member (77) can be formed as a handle that controls the gas cylinder.

[0241] When the height adjustment member (77), i.e., the handle, is lifted, the support member (76) rises due to the rise of the lifting member (75). As the support member (76) rises, a pair of pad support plates (731, 732) rise around the connecting plate (711, 712). When the pull of the height adjustment member (77) is released, the pad support plates (731, 732) stop, and the left and right sides (411, 421) of the pad cushion (741, 742) on the pad support plates (731, 732) are fitted to the user's body shape.

[0242] When the height adjustment member (77), that is, the handle, is pulled upward (in the drawing) and the pad cushion (741, 742) is pressed downward, the support member (76) is lowered by the lowering of the lifting member (75). As the support member (76) is lowered, a pair of pad support plates (731, 732) are lowered around the connecting plate (711, 712).

[0243] Conversely, the left and right sides (411, 421) of the pad cushion (741, 742) on the pad support plate (731, 732) move away from the user's body shape, and when the height adjustment member (77) is released, the pad cushion (741, 742) stops in the moved position.

[0244] In this way, when the height adjustment member (77) is pulled upward to raise the pad support plates (731, 732) and the pad cushion (741, 742) is pressed down while the height adjustment member (77) is pulled upward, the pad support plates (731, 732) descend, causing the left and right sides (411, 421) of the pad cushion (741, 742) to move away from the user's body shape and be adjusted accordingly.

[0245] Balance pad chair (8) according to the 15th embodiment

[0246] FIG. 43 is a diagram showing the combined relationship of the chair base plate, floor cushion, pad cushion, and pad support plate, and the configuration of the lifting member and height adjustment member connecting the chair base plate and the pad support plate in a balance pad chair according to the 15th embodiment of the present invention.

[0247] Referring to FIG. 43, in the balance pad chair (8) of the 15th embodiment, the lifting member (85) includes a rotating shaft (851) installed in a vertical direction and a nut (852) connected to the rotating shaft (851) by a hinge (H) to a support (76). The height adjustment member (87) may be formed as a motor that controls the rotating shaft (851).

[0248] As the support (76) rises according to the forward rotation of the motor, which is the height adjustment member (87), a pair of pad support plates (731, 732) rise around the connecting plate (711, 712). The left and right sides (411, 421) of the pad cushion (741, 742) on the pad support plates (731, 732) are fitted to the user's body shape.

[0249] As the support (76) descends according to the reverse rotation of the motor, which is the height adjustment member (87), a pair of pad support plates (731, 732) descend around the connecting plate (711, 712). The left and right sides (411, 421) of the pad cushion (741, 742) on the pad support plates (731, 732) move away from the user's body shape.

[0250] In this way, the left and right sides (411, 421) of the pad cushion (741, 742) are adjusted to fit the user's body shape by the forward and reverse rotation of the motor of the height adjustment member (87).

[0251] Balance pad chair (9) according to the 16th embodiment

[0252] FIG. 44 is a diagram showing the combined relationship of the chair base plate, floor cushion, pad cushion, and pad support plate, and the configuration of the lifting member and height adjustment member connecting the chair base plate and the pad support plate in a balance pad chair according to the 16th embodiment of the present invention.

[0253] Referring to FIG. 44, in the balance pad chair (9) of the 16th embodiment, the lifting member (95) comprises a bracket (67) installed on the lower side of the chair base plate (701), a pair of rotation shafts (951) installed horizontally in the space of the bracket (67), and a nut (953) screw-coupled to the rotation shafts (951) and hinge-coupled to the support (76). The height adjustment member (97) is formed as a motor that controls the rotation shafts (951).

[0254] As the support (76) rises according to the forward rotation of the motor, which is the height adjustment member (97), a pair of pad support plates (731, 732) rise around the connecting plate (711, 712). The left and right sides (411, 421) of the pad cushion (741, 742) on the pad support plates (731, 732) are fitted to the user's body shape.

[0255] As the support (76) descends according to the reverse rotation of the motor, which is the height adjustment member (97), a pair of pad support plates (731, 732) descend around the connecting plate (711, 712). The left and right sides (411, 421) of the pad cushion (741, 742) on the pad support plates (731, 732) move away from the user's body shape.

[0256] In this way, the left and right sides (411, 421) of the pad cushion (741, 742) are adjusted to fit the user's body shape by the forward and reverse rotation of the motor of the height adjustment member (97).

[0257] Balance pad chair (101) according to the 17th embodiment

[0258] FIG. 45 is a diagram showing the combined relationship of the chair base plate, floor cushion, pad cushion, and pad support plate, and the configuration of the lifting member and height adjustment member connecting the chair base plate and the pad support plate in a balance pad chair according to the 17th embodiment of the present invention.

[0259] Referring to FIG. 45, in the balance pad chair (101) of the 17th embodiment, the lifting member (95) includes a pair of rotation shafts (951) installed in a horizontal direction and a nut (953) screwed to the rotation shafts (951) and hinged to a support (76). The height adjustment member (107) is formed as a handle connected to the rotation shafts (951) by a bevel gear (954).

[0260] As the support member (76) rises according to the forward rotation of the handle, which is the height adjustment member (107), and the driving of the bevel gear (954), a pair of pad support plates (731, 732) rise around the connecting plate (711, 712). The left and right sides (411, 421) of the pad cushion (741, 742) on the pad support plates (731, 732) are fitted to the user's body shape.

[0261] As the support member (76) descends according to the reverse rotation of the handle, which is the height adjustment member (107), and the driving of the bevel gear (954), a pair of pad support plates (731, 732) descend around the connecting plate (711, 712). The left and right sides (411, 421) of the pad cushion (741, 742) on the pad support plates (731, 732) move away from the user's body shape.

[0262] In this way, the left and right sides (411, 421) of the pad cushion (741, 742) are adjusted to fit the user's body shape by the forward and reverse rotation of the handle, which is the height adjustment member (107).

[0263] 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.

Claims

1. A chair base plate having a first side roller in the left area, a second side roller in the right area, and a first center roller and a second center roller arranged side by side in the central area, A first bottom surface support frame having a first opening formed on the inner side, seated in the left area of ​​the upper surface of the chair base plate, and capable of sliding in the left and right directions of the chair base plate, A second bottom surface support frame having a second opening formed on the inner side, seated in the right area of ​​the upper surface of the chair base plate, and capable of sliding in the left and right directions 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 bottom surface, one end of which is fixed to the left end of the first bottom surface support frame, and the other end of which is fixed to the inside of the first bottom 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 second bottom surface, having one end fixed to the right end of the second bottom surface support frame and the other end fixed to the inner side of the second bottom surface support frame by sequentially passing through the second center roller, the lower surface of the chair base plate, the second side roller, and the second opening. Balance pad chair including 2. In Paragraph 1, The above-mentioned gap adjustment unit is, A bevel gear box provided on the lower part of the chair base plate, comprising a first bevel gear, a second bevel gear, and a third bevel gear. A first shaft coupled to the first bevel gear and having screw threads formed on its surface, A first long nut fixed to the first bottom 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 screw threads formed on its surface, A second long nut fixed to the second bottom surface support frame via a second binding bar and fastened to the tip of the second shaft, and Adjustment knob coupled to the third bevel gear above A balance pad chair including 3. In Paragraph 1, When viewed from the front of the chair base plate, the first floor surface support frame is provided with its left end bent into a '⊃' shape, and A balance pad chair, wherein when viewed from the front of the chair base plate, the second floor surface support frame is provided in a form where the right end is bent into a '⊂' shape.

4. Chair base, A first bottom surface support frame having a first conveyor roller section at the bottom, seated in the left area of ​​the upper surface of the chair base plate, and capable of sliding in the left and right directions of the chair base plate, A second bottom surface support frame having a second conveyor roller section at the bottom, seated in the right area of ​​the upper surface of the chair base plate, and capable of sliding in the left and right directions 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 bottom surface coupled to the first bottom surface support frame, and A second bottom surface coupled to the second bottom surface support frame. Balance pad chair including 5. In Paragraph 4, The above-mentioned gap adjustment unit is, A bevel gear box provided on the lower part of the chair base plate, comprising a first bevel gear, a second bevel gear, and a third bevel gear. A first shaft coupled to the first bevel gear and having screw threads formed on its surface, A first holder fixed to the first bottom surface support frame via a first binding bar, A first long nut that is fastened 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 screw threads formed on its surface, A second holder fixed to the second bottom surface support frame via a second binding bar, A second long nut that is fastened 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 Motor coupled to the third bevel gear above A balance pad chair including 6. In Paragraph 4, The above-mentioned first bottom surface support frame is, A slider part movably coupled to the floor plate of the above chair, A frame portion provided on the upper part of the slider, which is provided in a shape that wraps around the left buttock, and An uneven portion formed at the right end of the above-mentioned frame portion Includes, The above second bottom surface support frame is, A slider part movably coupled to the floor plate of the above chair, A frame portion provided on the upper part of the slider portion, which is provided in a form that wraps around the right buttock, and An uneven surface formed at the left end of the above-mentioned frame portion Includes, A balance pad chair provided with a structure in which the uneven portion of the first floor surface support frame and the uneven portion of the second floor surface support frame interlock.

7. A chair base plate having a first side roller in the left area and a second side roller in the 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 and right directions of the chair base plate, A second floor surface support frame coupled to the right area of ​​the above chair base plate and capable of sliding in the left and right directions of the above 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 bottom surface having one end fixed to the left end of the first bottom surface support frame and a first string portion provided in the center, and A second bottom surface having one end fixed to the right end of the second bottom surface support frame and a second string portion provided in the center. Includes, The first string portion and the second string portion intersect each other, and The other end of the first bottom surface passes through the second side roller and is fixed to the second bottom surface support frame by means of a fixing device, and A balance pad chair, wherein the other end of the second bottom surface passes through the first side roller and is fixed to the first bottom surface support frame by means of a fixing device.

8. In Paragraph 7, The above-mentioned gap adjustment unit is, A bevel gear box provided on the lower part of the chair base plate, comprising a first bevel gear, a second bevel gear, and a third bevel gear. A first shaft coupled to the first bevel gear and having screw threads formed on its surface, A first holder fixed to the first bottom surface support frame, A first long nut that is fastened 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 screw threads formed on its surface, A second holder fixed to the second bottom surface support frame, A second long nut that is fastened 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 Adjustment knob coupled to the third bevel gear above A balance pad chair including 9. In Paragraph 7, A balance pad chair, wherein each of the first floor surface support frame and the second floor surface support frame is provided in a form that wraps around the front edge, the bottom edge, and the rear edge of the chair base plate.

10. Chair base, A first floor surface support frame coupled to the left area of ​​the chair base plate and capable of sliding in the left and right directions of the chair base plate, A second floor surface support frame coupled to the right area of ​​the above chair base plate and capable of sliding in the left and right directions of the above 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 bottom surface coupled to the first bottom surface support frame, and A second bottom surface coupled to the second bottom surface support frame. A balance pad chair including 11. In Paragraph 10, The above-mentioned gap adjustment unit is, A bevel gear box provided on the lower part of the chair base plate, comprising a first bevel gear, a second bevel gear, and a third bevel gear. A first shaft coupled to the first bevel gear and having screw threads formed on its surface, A first holder fixed to the first bottom surface support frame, A first long nut that is fastened 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 screw threads formed on its surface, A second holder fixed to the second bottom surface support frame, A second long nut that is fastened 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 Adjustment knob coupled to the third bevel gear above A balance pad chair including 12. In Paragraph 10, The above-mentioned first bottom surface support frame is, A slider part movably coupled to the floor plate of the above chair, A frame portion provided on the upper part of the slider, which is provided in a shape that wraps around the left buttock, and An uneven portion formed at the right end of the above-mentioned frame portion Includes, The above second bottom surface support frame is, A slider part movably coupled to the floor plate of the above chair, A frame portion provided on the upper part of the slider portion, which is provided in a form that wraps around the right buttock, and An uneven surface formed at the left end of the above-mentioned frame portion Includes, A balance pad chair provided with a structure in which the uneven portion of the first floor surface support frame and the uneven portion of the second floor surface support frame interlock.

13. Chair base, A first bottom surface support frame, the lower end of which is hinge-connected to the left upper surface area of ​​the chair base plate, A second bottom surface support frame, the lower end of which is hinge-connected to the right side of the upper surface of the chair base plate, A first link, one end of which is hinge-connected 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 hinge-connected 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 bottom surface having one side in the width direction connected to the first bottom surface support frame and the other side in the width direction connected to the second bottom surface support frame. Balance pad chair including 14. In Paragraph 13, The above-mentioned gap adjustment unit is, A bevel gear box provided on the lower part of the chair base plate, comprising a first bevel gear, a second bevel gear, and a third bevel gear. A first shaft coupled to the first bevel gear and having screw threads formed on its surface, A first square nut that is fastened to the first shaft and has its outer side hinged to the other end of the first link, A second shaft coupled to the second bevel gear and having screw threads formed on its surface, A second square nut that is fastened to the second shaft and has its outer side hinged to the other end of the second link, Adjustment knob coupled to the third bevel gear above A balance pad chair including 15. In Paragraph 13, A component receiving frame provided on the underside of the chair base plate. Includes, The above-mentioned gap adjustment unit is a balance pad chair located inside the component receiving frame.

16. Chair base, A first floor surface support frame coupled to the left area of ​​the chair base plate and capable of sliding in the left and right directions of the chair base plate, A second floor surface support frame coupled to the right area of ​​the above chair base plate and capable of sliding in the left and right directions of the above 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 bottom surface having one side in the width direction connected to the first bottom surface support frame and the other side in the width direction connected to the second bottom surface support frame. Includes, A balance pad chair in which 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.

17. In Paragraph 16, The above-mentioned gap adjustment unit is, A bevel gear box provided on the lower part of the chair base plate, comprising a first bevel gear, a second bevel gear, and a third bevel gear. A first shaft coupled to the first bevel gear and having screw threads formed on its surface, A first long nut fixed to the first bottom surface support frame and fastened to the tip of the first shaft, A second shaft coupled to the second bevel gear and having screw threads formed on its surface, A second long nut fixed to the second bottom surface support frame and fastened to the tip of the second shaft, and Adjustment knob coupled to the third bevel gear above A balance pad chair including 18. In Paragraph 16, The above-mentioned first bottom surface support frame is, A slider part movably coupled to the floor plate of the chair, and A frame portion provided at the left end of the above slider, Includes, The above second bottom surface support frame is, A slider part movably coupled to the floor plate of the chair, and A frame portion provided at the left end of the above slider, A balance pad chair including 19. Chair base, A first floor surface support frame coupled to the left area of ​​the chair base plate and capable of sliding in the left and right directions of the chair base plate, A second floor surface support frame coupled to the right area of ​​the above chair base plate and capable of sliding in the left and right directions of the above 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 bottom surface coupled to the first bottom surface support frame, and A second bottom surface coupled to the second bottom surface support frame. Includes, A balance pad chair having a central cushion provided on the upper surface of the chair base plate.

20. In Paragraph 19, The above-mentioned gap adjustment unit is, A bevel gear box provided on the lower part of the chair base plate, comprising a first bevel gear, a second bevel gear, and a third bevel gear. A first shaft coupled to the first bevel gear and having screw threads formed on its surface, A first long nut fixed to the first bottom surface support frame and fastened to the tip of the first shaft, A second shaft coupled to the second bevel gear and having screw threads formed on its surface, A second long nut fixed to the second bottom surface support frame and fastened to the tip of the second shaft, and Adjustment knob coupled to the third bevel gear above A balance pad chair including 21. In Paragraph 19, The above-mentioned first bottom surface support frame is, A slider part movably coupled to the floor plate of the chair, and A frame portion provided at the left end of the slider, which is provided in a shape that wraps around the left buttock, Includes, The above second bottom surface support frame is, A slider part movably coupled to the floor plate of the chair, and A frame part provided at the left end of the slider, which is provided in a shape that wraps around the right buttock, A balance pad chair including 22. A pad cushion is provided in the central part, a front part (FR) is provided in front of the central part (CT), and a rear part (RR) is provided behind the central part (CT) to form the seat of the chair. The above central part (CT) is Dividers provided at the left and right center; Chair base plates located on the left and right sides of the above divider; A floor cushion placed on the floor plate of the above chair; A pair of pad cushions disposed on the floor cushion, separated left and right based on the divider, and each having sides on the left and right; A pad frame that supports both left and right sides of the pad cushion and moves in the left and right directions on the chair base plate; and A power transmission unit connecting the above chair base plate and the above pad frame Includes, Depending on the left and right movement of the pad frame, the left and right sides of the pad cushion A balance pad chair that supports the sides of the user's buttocks by adjusting according to body shape.

23. In Paragraph 22, A pad cushion receiving portion extending horizontally from the lower side of the chair base plate between the above-mentioned divider and the above-mentioned chair base plate to form a pad cushion movement space. Balance pad chair that includes more 24. In Paragraph 22, The above power transmission unit A motor installed on the lower side of the above chair base plate and having a pair of rotation axes in the left and right directions, A holder installed on the lower side of the pad frame, and A long nut comprising an elastic member that is elastically installed in the holder in the direction of the rotation axis and screw-coupled with a screw formed on the rotation axis, Balance pad chair.

25. In Paragraph 22, The above chair base plate is integrally equipped with a roller support, and The pad frame is equipped with a roller that is rollingly coupled to move on the upper surface of the roller support, and The above power transmission unit A pair of rotation axes installed on the lower side of the chair base plate in the left-right direction, A motor connected to the above-mentioned rotating shaft by a bevel gear, and A long nut installed on the lower side of the chair base plate opposite the motor, screw-coupled to a screw formed at the end of the rotation shaft to provide rotational support, and connected to the pad frame. Balance pad chair.

26. A pad cushion is provided in the central part, a front part (FR) is provided in front of the central part (CT), and a rear part (RR) is provided behind the central part (CT) to form the seat of the chair. The above central part (CT) is Dividers provided at the left and right center; Chair base plates located on the left and right sides of the above-mentioned divider; A moving guide positioned on the floor plate of the chair above; A pair of pad cushions disposed on the above-mentioned moving guide, separated left and right with respect to the above-mentioned separator, and each having sides on the left and right; A pad frame that supports both the left and right sides of the pad cushion and moves in the left and right directions on the chair base plate; A power transmission unit connecting the above chair base plate and the above pad frame; and A pad cushion receiving portion extending vertically from the lower side of the chair base plate between the above-mentioned divider and the above-mentioned chair base plate to form a pad cushion movement space. Includes, Depending on the left and right movement of the pad frame, the left and right sides of the pad cushion A balance pad chair that supports the sides of the user's buttocks by adjusting according to body shape.

27. In Paragraph 26, The above chair base plate is integrally equipped with a roller support, and The above roller support rotatably accommodates the roller, and The above pad frame is rollingly supported on the roller, and The above power transmission unit A pair of rotation axes installed on the lower side of the chair base plate in the left-right direction, A pair of motors connected to each of the above-mentioned rotation shafts, and A long nut installed on the lower side of the chair base plate opposite the motor, which rotatably supports the end of the rotating shaft and is connected to the pad frame, Balance pad chair.

28. A pad cushion is provided in the central part, a front part (FR) is provided in front of the central part (CT), and a rear part (RR) is provided behind the central part (CT) to form the seat of the chair. The above central part (CT) is Dividers provided at the left and right center; Chair base plates positioned on the left and right sides of the above-mentioned divider; A floor cushion placed on the floor plate of the above chair; A pair of pad cushions that are placed on the floor cushion, separated left and right based on the divider, each having sides on the left and right, and move in the left and right directions on the chair base plate; A pad cushion band connected to the pad cushion and positioned below the chair base plate; and A power transmission unit connecting the above chair base plate and the above pad cushion band Includes, As the pad cushion band moves, the left and right sides of the pad cushion Balance pad chair that adjusts according to the user's body shape on the side of the hips.

29. In Paragraph 28, The above chair base plate is equipped with a slide rail on its lower surface, and The above power transmission unit A motor installed on the lower side of the above chair base plate and having a pair of rotation axes in the left and right directions, A holder installed on the lower side of the chair base plate on the opposite side of the motor to rotatably support the end of the rotating shaft, and A guide comprising a slide-coupled guide that is slidably coupled to the slide rail and screw-coupled to a screw formed on the rotation axis. Balance pad chair.

30. A pad cushion is provided in the central part, a front part (FR) is provided in front of the central part (CT), and a rear part (RR) is provided behind the central part (CT) to form the chair base. The above central part (CT) is Chair base plate; A floor cushion placed on the floor plate of the above chair; A pair of pad cushions disposed on both ends of the floor cushion, separated left and right, and each having sides on the left and right; A pad frame that supports both left and right sides of the pad cushion and moves in the left and right directions on the chair base plate; and A power transmission unit connecting the above chair base plate and the above pad frame Includes, A balance pad chair in which the left and right sides of the pad cushion are adjusted according to the body shape of the user's buttocks side as the pad frame moves left and right.

31. Chair base; A floor cushion placed on the floor plate of the above chair; A pair of pad cushions disposed on both ends of the floor cushion, separated left and right, and each having sides on the left and right; A pad frame that supports both left and right sides of the pad cushion and moves in the left and right directions on the chair base plate; and A power transmission unit connecting the above chair base plate and the above pad frame Includes, The above power transmission unit A pair of rotation axes installed on the lower side of the chair base plate in the left-right direction, Adjustment knob connected to the above-mentioned rotating shaft by a bevel gear, A holder installed on the lower side of the pad frame, and A long nut comprising an elastic member that is elastically installed in the holder in the direction of the rotation axis and screw-coupled with a screw formed on the rotation axis, Balance pad chair.

32. A pad cushion is provided in the central part, a front part (FR) is provided in front of the central part (CT), and a rear part (RR) is provided behind the central part (CT) to form the seat of the chair. The above central part (CT) is Chair base plate; A floor cushion placed on the floor plate of the above chair; A pair of pad cushions disposed on both ends of the floor cushion, separated left and right, and each having sides on the left and right; A pair of guide bars installed on the lower side of the chair base plate and moving in the left and right directions, and A pair of pad frames mounted on the guide bar, supporting both the left and right sides of the pad cushion and rotating with the guide bar Includes, A balance pad chair in which the left and right sides of the pad cushion are adjusted according to the body shape of the user's buttocks side as the pad frame moves left and right.

33. Chair base; A floor cushion placed on the floor plate of the above chair; A pair of pad cushions disposed on both ends of the floor cushion, separated left and right, and each having sides on the left and right; A pair of guide bars installed on the lower side of the chair base plate and moving in the left and right directions, and A pair of pad frames mounted on the guide bar, supporting both the left and right sides of the pad cushion and rotating with the guide bar Includes, The above pad frame is equipped with a stopper on the lower surface, and A balance pad chair, wherein the chair base plate has stopper holes that are optionally coupled to the stopper.

Images