Jigging tool, jigging tool set, and method for assembling a jigging tool

Abstract

To provide a jiggling tool, a jiggling tool set, and a method for assembling the jiggling tool, which has a simple structure, can prevent a main body from slipping off due to rocking, enables rocking motion in multiple directions, and is less susceptible to operating noise. [Solution] The jiggling device 1 of the present invention comprises a main body 10 that is curved so that the center of the bottom surface is convex downwards and on whose top surface the user places both lower limbs, and a base plate 20 that is placed between the main body and the floor surface, and further comprises an elastic string material 30 that is hung between the main body and the base plate, and a fixing structure 40 for holding the hanging position of the elastic string material on the main body and the base plate. The jiggling device of the present invention has an elastic member hung between the main body and the base, and holds the hanging position with the fixing structure. Since the main body does not slip off the base during jiggling, jiggling can be performed stably for a long time. Furthermore, since the structure of the jiggling device is simple, users can easily use it in their daily lives.

Description

[Technical field]

[0001] The present invention relates to a jiggling tool, a jiggling tool set, and a method for assembling a jiggling tool that have a simple structure, can prevent the main body from slipping off due to rocking, allows rocking motion in multiple directions, and is quiet when operating. [Background technology]

[0002] Jiggling (also known as jiggling) is an exercise in which you move your hip and knee joints in small, gradual movements, and is attracting attention as an exercise that may have medical benefits for a variety of conditions, including osteoarthritis of the hip and knee. For example, Patent Document 1 discloses an exercise machine as a device for assisting jiggling, which includes a semicircular main body, a base (pedestal) on which the main body is placed, a convex portion provided on the base to restrict movement of the main body, and a concave portion formed on the underside of the main body to fit into the convex portion. Patent Document 2 also discloses a similar configuration. A user can perform jiggling by placing both feet on the top surface of the main body and moving them alternately up and down, and because the convex portion and the concave portion fit together, it is possible to prevent the main body from shifting forward / backward or left / right on the base while jiggling.

[0003] On the other hand, for example, Patent Document 3 discloses an instrument in which the bottom surface of the main body is smoothly curved to form an arc shape in the fore-aft and left-right directions, so that the main body can be likened to a ship and swung in three directions: (1) the roll direction around an axis in the fore-aft direction, (2) the pitch direction around an axis in the left-right direction, and (3) the yaw direction around an axis in the vertical direction. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 7307982 [Patent Document 2] JP 2022-103612 A [Patent Document 3] Patent No. 7476441 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the technologies disclosed in Patent Documents 1 and 2 above have problems such as increased manufacturing costs due to the provision of convex and concave portions, limited movable directions of the main body portion because the convex and concave portions are fitted together, and a tendency for friction noise to occur at the fitting portions. The technology disclosed in Patent Document 3 has a problem in that, although the main body can be swung in three directions, the main body moves on the receiving tool (base) and is prone to falling off during the swinging motion.

[0006] In consideration of these problems, the present invention aims to provide a jiggling tool, a jiggling tool set, and a method for assembling a jiggling tool that have a simple structure, can prevent the main body from slipping and falling off due to rocking, allows rocking motion in multiple directions, and is quiet when operating. [Means for solving the problem]

[0007] The jiggling device of the present invention comprises a main body portion whose bottom surface is curved so that the center of the bottom surface is convex downwards and on whose upper surface the user places both lower limbs, and a base plate which is placed between the main body portion and a flat floor surface, and is characterized in that it further comprises an elastic string material which is hung across the main body portion and the base plate, and a fixing structure for maintaining the hanging position of the elastic string material on the main body portion and the base plate. Furthermore, when the portion including the bottom surface of the main body portion is the curved portion and the upper surface of the main body portion is the mounting portion, the curved portion and the mounting portion are both plate-shaped, the longitudinal cross-sectional shape along the front-to-rear direction of the main body portion is T-shaped, and the upper surface of the base plate extends in the left-right direction and is provided with a groove portion into which the lower end of the curved portion fits. The base plate has an M-shaped cross-sectional shape along the front-to-rear direction, and the three corners forming the M shape intersect at right angles, and the recess in the central corner of the three corners forms the groove. The curved portion is also detachable from the placement portion by means of a fitting engagement. Also, When a portion including a bottom surface of the main body is a curved portion and an upper surface of the main body is a placement portion, The curved portion is an elastic plate-like portion, the placement portion is plate-like, and the left and right ends of the underside of the placement portion are provided with left and right step portions for abutting the left and right ends of the curved portion, the left and right width of the curved portion is greater than the width between the left and right step portions, and the curved portion is elastically deformed to fit into the left and right step portions, and the left and right ends of the curved portion are abutted against the left and right step portions, thereby maintaining the curved portion in a downwardly convex curved state. The present invention is also characterized in that a non-elastic string material having no elasticity is used in place of the elastic string material.

[0008] The jiggling tool set of the present invention is characterized by comprising the above-mentioned jiggling tool, a support part on which the base plate is placed and supported from below, a pillar fixed to the support part and extending downward, a floor-standing member fixed to the lower end of the pillar, and a belt that is stretched between the seat of a chair on which the user sits and the support part or the pillar. The method of assembling a jiggling device of the present invention is characterized in that, in the method of assembling the jiggling device described above, the base plate is provided with legs located inside the left and right ends of the underside of the base plate, one of the left and right ends of the base plate is hooked onto the step portion, one of the left and right ends of the curved portion is abutted against the step portion and the other end is abutted against the leg, and the base plate is tilted towards the curved portion to bend the curved portion using the principle of leverage, and the other end of the curved portion is fitted into and abutted against the step portion. Effect of the Invention

[0009] The jiggling device of the present invention has an elastic string material stretched between the main body and the base plate, and a fixing structure for holding the position where the elastic string material is hung on the main body and the position where the elastic string material is hung on the base plate. This allows the main body and the base plate to be connected by the elastic string material. During jiggling, a horizontal force biased in either the front, back, left or right direction is generated on the main body due to the user's posture and foot movement habits. This causes the trajectory of the contact point between the main body and the base plate to move little by little in one direction, causing the main body to shift from the center of the base plate, but this shift pulls the elastic string material, generating an elastic force that tries to return the main body to the center, stopping the shift, and the main body does not fall off the base plate, allowing stable jiggling for a long time. In addition, the use of elastic string material eliminates the noise caused by friction and impact during jiggling, resulting in a quieter operation. Also, the main body and base plate can be integrated, improving portability.

[0010] If the longitudinal cross section of the main body is T-shaped and a groove into which the lower end of the plate-like curved part fits is provided in the base plate, the main body can not only be rotated and swung left and right, but also rotated and swung forward and backward around the lower end of the curved part, or rotated and swung in a horizontal plane by utilizing the torsional elastic deformation of the plate-like curved part. Since it can be swung in multiple directions, it is possible to more effectively improve and prevent various symptoms, including osteoarthritis of the knee and hip joint. Furthermore, since the lower end of the curved portion fits into a groove in the base plate, it will not come out of the groove when rotated or swung, and displacement of the main body in the front-to-rear direction can be suppressed without relying on elastic cord material. In addition, the elastic cord material can prevent the main body from falling over in either the front or rear direction when not in use.

[0011] The vertical cross section of the base plate along the front-to-rear direction is M-shaped, with the three corners forming the M shape intersecting at right angles and the recess in the central corner of these three corners made into a groove. By doing this, it is possible to use this device not only on a flat floor but also by hooking the M-shaped base plate onto a step in an entranceway or other location. By fitting the curved portion into the mounting portion and making it detachable by engagement, the jiggling device can be disassembled to increase portability, and when the tip of the curved portion becomes worn, only the curved portion can be replaced. If the curved portion and the mounting portion are both made in a plate shape and a step provided on the underside of the mounting portion is used to hold the curved portion together in a bent state, the curved portion, mounting portion, and base can be disassembled when not in use and tied together with an elastic string material to make it compact and improve portability and storage capacity. Also, even if a non-elastic string material that has no elasticity is used instead of the elastic string material, the curved portion and mounting portion can be elastically deformed, allowing smooth jiggling. According to the jiggling tool set of the present invention, jiggling, which is usually performed at a step in a hallway or the like, can be performed while sitting on a chair, thereby improving convenience. According to the method of assembling the jiggling device of the present invention, the bending portion is attached to the mounting portion by utilizing the principle of leverage, so that assembly is easy. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view of a jiggling tool according to a first embodiment; [Diagram 2] Side views of the jiggling device (a) and (b) [Diagram 3] Front view of the jiggling device (a) and (b) [Figure 4] FIG. 13 is a perspective view showing a modified example of the jiggling device. [Diagram 5] FIG. 13 is a perspective view showing a modified example of the jiggling device. [Figure 6] FIG. 13 is a perspective view of a jiggling tool according to a second embodiment; [Figure 7] Side views of the jiggling device (a)-(c) [Figure 8] Front view of the jiggling device (a) and (b) [Figure 9] FIG. 1 is a perspective view showing a rotation pattern of a jiggling device; [Figure 10] FIG. 1A is an exploded perspective view showing a modified example of the jiggling device; FIG. 1B is a perspective view showing the stored state of the jiggling device; [Figure 11]13 is a perspective view of a jiggling tool according to a third embodiment; [Figure 12] Side view showing how to use the jiggling tool [Figure 13] Side view showing how to use the jiggling tool [Figure 14] Side view showing how to use the jiggling tool [Figure 15] FIG. 13 is a perspective view of a main body according to the fourth embodiment; [Figure 16] Perspective view of a jiggling device [Figure 17] FIG. 1 is a perspective view showing a state in which the jiggling tool is stored; [Figure 18] FIG. 13 is a perspective view showing a modified example of the jiggling device. [Figure 19] Front view of the jiggling device (a) and (b) [Figure 20] FIG. 1 is a perspective view showing a state in which the jiggling tool is stored; [Figure 21] Bottom and side views (a) to (c) showing how to assemble the jiggling device [Figure 22] Front view showing how to assemble the jiggling device [Diagram 23] Front view showing how to assemble the jiggling device [Figure 24] Front view showing how to assemble the jiggling device [Diagram 25] (a) is a front view showing a part of the jiggling tool set, and (b) is a side view showing how to use it. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] [First embodiment] A first embodiment of the jiggling tool of the present invention will be described. The jiggling tool of this embodiment is basically used on a horizontal floor surface. In addition to the floor surface, it can be used on a mat laid on the floor, the underside of a step at an entrance, the ground outdoors, and the floor of a vehicle such as a train, bus, car, or airplane, but is not limited to these.

[0014] As shown in FIG. 1, the jiggling device 1 comprises a main body 10, a base plate 20, an elastic string material 30 and a fixing structure 40. The main body 10 is curved so that the center of its bottom surface is convex downward, and the user places both of their lower limbs on its upper surface when using it. Hereinafter, the portion including the bottom surface of the main body 10 will be referred to as the curved portion 11, and the upper surface of the main body 10 will be referred to as the placement portion 12. The bottom surface of the curved portion 11 has its lowest point at its left-right center, and a curve extends from the lowest point in the left-right direction to connect to the left and right ends of the placement portion 12.

[0015] The user typically places his or her left and right feet on the support portion 12 while seated in a chair, but as will be described later, the user may also place his or her left and right calves on the support portion. The base plate 20 is a plate-like member disposed between the main body 10 and the flat floor 101. In this embodiment, legs 21 are provided on the left and right sides of the underside of the base plate 20, which form a gap 22 when the base plate 20 is placed on the flat floor 101. It is desirable to provide an anti-slip structure on the bottom surface of the legs 21 or to attach an anti-slip material to the bottom surface of the legs 21. The materials of the main body 10 and the base plate 20 are not particularly limited, and may be polystyrene foam, polyurethane foam, plastic, wood, metal, or paper. The main body 10 and the base plate 20 may have a cross-section filled structure or a hollow structure.

[0016] The elastic string material 30 is a string-like member having elasticity that is stretched across the main body 10 and the base plate 20, and has the function of fastening the main body 10 to the upper surface of the base plate 20. Examples of the elastic string material 30 include rubber ropes, drawcords, and round rubber strings, which are made of a core material such as fluororubber, silicone rubber, urethane rubber, chloroprene rubber, nitrile rubber, ethylene propylene rubber, and natural rubber, and are reinforced with a tube woven with fibers such as nylon and polyester. The elastic string material 30 expands and contracts during jiggling, but does not make any sound at this time. The elastic cord material 30 is not limited to a material having a circular cross section, and can function similarly with an elastic belt-shaped material. The fixing structure 40 is provided to maintain the hanging position of the elastic string material 30 hung across the main body part 10 and the base plate 20. Specifically, notches 41 are provided as the fixing structure 40 at the corners of the mounting part 12 and the base plate 20, and the elastic string material 30 is hooked onto this notch 41. The elastic string material 30 passes through the gap 22 in the underside of the base plate 20.

[0017] A method of using the jiggling device 1 and the function of the elastic cord material 30 will now be described. A user sits on a chair and places both feet on the left and right sides of the placement portion 12 of the main body 10 placed on the base plate 20. An elastic string material 30 is hung between the main body 10 and the base plate 20. As shown by arrow A in Figures 2(a) and 3(a), the user performs jiggling by alternately moving both feet up and down.

[0018] 2(b) and 3(b), the main body 10 tends to shift in either direction from the center of the top surface of the base plate 20 during jiggling, but the elastic string material 30 is caught in the notch 41 of the main body 10, and the elastic force of the elastic string material 30 acts to pull the main body 10 back to the center of the base plate 20, so the positional shift of the main body 10 is kept within a range that does not cause problems in actual use. In addition, since the elastic string material 30 is also caught in the corners of the base plate 20 by the notch 41, it is also possible to prevent the elastic string material 30 from shifting from the center of the base plate 20 during jiggling. When the user removes his / her foot from the main body 10, the structure of the curved portion 11 causes the main body 10 to automatically return to the original state shown in Fig. 3(a). Furthermore, the elasticity of the elastic cord material 30 also acts as a restoring force that tries to return the main body 10 to its original state. By adjusting the elasticity of the elastic cord material 30, the restoring force of the main body 10 can be adjusted according to the user's preference. As for the shape of the fixing structure 40 and the way of hanging the elastic string material 30, it is also possible to hang the elastic string material 30 twice so as to cross it on the upper surface of the mounting part 12 as shown in FIG. 4, or to hook the elastic string material 30 onto protrusions 23 provided on the front and rear ends of the base plate 20 as shown in FIG. 5. The elastic cord 30 is in a ring shape, but both ends of a single piece are knotted together to form a ring shape. In this way, the user can change the knotting position and adjust the elasticity of the elastic cord 30. Also, the elastic string material 30 may be made into a single piece rather than a ring shape, with knots formed at both ends, and the knots may be hooked onto the base plate 20 or the main body 10. Regardless of the method of hanging the elastic string material 30, the elastic string material 30 expands and contracts during jiggling, but no sound is generated from the elastic string material 30, and no sound is generated from other parts, making the device quiet. In addition, the elastic string material 30 allows the main body 10 and the base plate 20 to be integrated, improving portability. The optimum left-right width W1 of the mounting portion 12 is 25 to 60 cm, the optimum front-to-back width W2 is 5 to 20 cm, and the optimum body height h1 from the upper surface of the mounting portion 12 to the lowest point of the curved portion 11 is 5 to 20 cm. The optimum ratio h1 / W2 of the body height h1 to the front-to-back width W2 of the mounting portion 12 is 0.3 to 1.2.

[0019] [Second embodiment] A second embodiment of the jiggling device of the present invention will be described. The same components as those in the first embodiment will be designated by the same reference numerals and the description thereof will be omitted. 6 to 8, in the jiggling device 2 of this embodiment, both the curved portion 11 and the mounting portion 12 are plate-shaped. By fixing the upper end of the curved portion 11 to the lower surface of the mounting portion 12, the vertical cross-sectional shape along the front-rear direction becomes T-shaped. The upper surface of the base plate 20 is provided with a groove 24 into which the lower end of the curved portion 11 fits.

[0020] 7(a)-(c), the lower end of the curved portion 11 fits into the groove 24 of the base plate 20, so that the lower end of the curved portion 11 does not come out of the groove of the base plate 20 during rotation and rocking, and the main body portion 10 can be prevented from shifting in the front-rear direction without relying on the elastic cord material 30. In addition, the elastic cord material 30 can prevent the main body portion 10 from falling in either the front or rear direction when not in use. Furthermore, the inclined state of the main body portion 10 is maintained even if the foot is removed from the state shown in Figs. 7(b) and (c). As shown by arrow B in Figure 8(b) , during jiggling, main body part 10 attempts to shift to the left or right from the center of the top surface of base plate 20, but the elastic string material 30 is caught in notch 41 of main body part 10, and the elastic force of elastic string material 30 acts to pull main body part 10 back to the center of base plate 20, so that the left-right positional shift of main body part 10 is kept within a range that does not cause problems in actual use. In addition, since the elastic string material 30 is also hooked at the corners of the base plate 20 by the notches 41, the elastic string material 30 can be prevented from shifting from the center of the base plate 20 during jiggling. By forming the curved portion 11 in a plate shape and configuring the lower end of the curved portion 11 to fit into the groove portion 24, the main body portion 10 not only moves up and down around an axis (front-rear axis) extending in the front-rear direction as the center of rotation as shown in Fig. 9, but also rotates in the front-rear direction around an axis (left-right axis) extending in the left-right direction as the center of rotation as shown in Figs. 7(b), (c) and 9. Furthermore, by forming the plate-shaped curved portion 11 from an elastic plate material, it is possible to rotate in a horizontal plane around an axis (up-down axis) extending in the up-down direction as the center of rotation by utilizing the torsional elastic deformation around the lower end of the curved portion 11 fitted into the groove portion 24. In addition, the main body portion 10 can be maintained in a state rotated in the front-rear direction (tilted state) by using the elastic cord material 30.

[0021] Compared to the jiggling device 1 of the first embodiment, the jiggling device 2 of this embodiment is capable of rotation in the forward and backward directions around the lower end of the curved portion 11 as well as rotation in the horizontal plane, making a variety of jiggling possible, including movement of the ankle joint. Furthermore, since the curved portion 11 and the placement portion 12 are made of plate material, they are easily available on the market, the jiggling device 2 can be produced at low cost, and the weight can be reduced. The curved portion 11 and the base plate 20 are preferably made of an appropriate combination of materials from the viewpoints of wear resistance and reduction of friction noise, since the load is applied at point contact. Specifically, a combination in which both are MDF boards, or the curved portion 11 is MDF boards and the entire base plate 20 or the groove portion 24 is made of metal such as aluminum, proved to be effective in prototype experiments. The official name of MDF boards is Medium Density Fiberboard, and they are a type of wood board. In Japanese, they are called medium density fiberboards or medium density fiberboards, and are made by forming finely crushed wood into a board shape. As shown in the following table (source: Safety Data Sheet (SDS)), MDF boards contain paraffin wax components to improve moisture resistance and water resistance, and this wax component contributes to wear resistance and reduction of friction noise. [Table 1] The optimum thickness t1 of the plate material of the curved portion 11 is 3 to 20 mm. The depth d1 of the groove 24 is preferably equal to or greater than the thickness t1 of the plate material of the curved portion 11, and the ratio d1 / t1 is preferably 0.8 or greater. The width W3 of the groove 24 is preferably 1.2 to 5 times the thickness t1 of the plate material of the curved portion 11. The cross-sectional shape of the groove 24 is preferably a smooth concave shape. The fixing position of the curved portion 11 is desirably on the center line extending in the left-right direction of the lower surface of the mounting portion 12, and the fixing angle of the curved portion 11 is desirably a right angle with respect to the mounting portion 12. The vertical cross-sectional shape in the front-to-rear direction of the lower end of the curved portion 11 is desirably a smooth convex shape.

[0022] In this embodiment, the curved portion 11 is fixed to the mounting portion 12, but the curved portion 11 may be detachable from the mounting portion 12 as shown in Fig. 10(a). In this case, a connecting portion 13 extending in the left-right direction is formed on the lower surface of the mounting portion 12. The connecting portion 13 is composed of two clamping plates 13a, one in front and one in back, extending in the left-right direction. The upper end of the curved portion 11 is fitted into the gap 13b between the two clamping plates 13a, and by fitting them together, the curved portion 11 and the mounting portion 12 can be detachably connected. If the gap 13b has a uniform U-shaped cross section in the left-right direction, there is a possibility that the fitted curved portion 11 will shift left-right during use. By partially providing padding in the gap 13b to connect and integrate the clamping plates 13a, and providing a notch at the upper end of the curved portion 11 to allow for the padding, it is possible to prevent left-right shifting of the curved portion 11. Furthermore, by partially integrating the clamping plates 13a with padding, the strength of the connecting portion 13 can be increased, making it easier to design a balance in strength between the connecting portion 13 and the curved portion 11. When not in use, they can be stacked and tied with an elastic string 30 or the like as shown in Fig. 10(b) to make them compact and improve portability and storage capacity. When the tip of the bending portion 11 becomes worn, only the bending portion 11 needs to be replaced. The jiggling sensation for the user changes depending on the height and curved shape of the curved portion 11, so the user can obtain a jiggling sensation that suits his or her preference by appropriately changing the curved portion 11.

[0023] [Third embodiment] A third embodiment of the jiggling device of the present invention will now be described. The same components as those in the above-described embodiments will be designated by the same reference numerals and their description will be omitted. As shown in FIG. 11, the jiggling device 3 of this embodiment has an M-shaped cross-sectional shape along the front-to-rear direction of the base plate 20, and is characterized in that the intersecting angles of the three corners 25a-25c forming the M are right angles, and the downwardly convex corner 25b located in the center of the three corners 25a-25c is formed as a groove portion 24.

[0024] The main body 10 used has a T-shaped vertical cross section as shown in the second embodiment. After placing the main body 10 as shown in Fig. 11, the elastic string material 30 is stretched across the base plate 20 and the main body 10. This stretching method allows the elastic string material 30 to be absent from the underside of the base plate 20, making it possible to hook the base plate 20 over a step, as described next. As shown in Figures 12 and 13, the corners of the base plate 20 can be hooked onto the corners 100 of a step and fixed, so jiggling can be performed at various places with corners, such as a step at an entrance. In this case, the calves, rather than the feet, are placed on the placement part 12, and a different jiggling effect can be obtained than when the feet are placed on the base plate. Also, as shown in Figure 14, the base plate 20 can be placed on a flat floor 101 and the feet can be placed on it. By forming the cross section of the base plate 20 in the above-mentioned M-shape, the instrument becomes symmetrical from front to back, eliminating the need for the user to adjust the direction, improving convenience.

[0025] [Fourth embodiment] A fourth embodiment of the jiggling device of the present invention will now be described. The same reference numerals will be used to designate the same components as those in the above-described embodiments, and the description thereof will be omitted. 15, the jiggling device 4 of this embodiment has a curved portion 14 and a mounting portion 15 both in the shape of a plate. The mounting portion 15 is characterized in that it has step portions 16 on both the left and right ends of the underside thereof against which the left and right ends of the curved portion 14 abut.

[0026] The step portions 16 are two rod-shaped bodies extending in the front-rear direction, one on the left and one on the right. The left-right width of the curved portion 14 is made larger than the width between the left and right step portions 16. The user bends the curved portion 14 by pressing one of the left and right ends (for example, the right end) of the uncurved, flat curved portion 14 or the curved portion 14 having a pre-curved shape against the step portion 16, then elastically deforms the curved portion 14 to fit it into the left and right step portions 16, and then presses the other end (for example, the left end) against the step portion 16, thereby holding the curved portion 14 in a downwardly convex curved state as shown in FIG. 16. The curved portion 14 having a pre-curved shape can be produced by overlapping two or more thin flat plates and bonding them together in a curved state with an adhesive or the like. With this fitting structure, there is a possibility that the fitting position of the curved portion 14 may shift in the front-to-rear direction during use. By providing a protrusion or recess in part of the step portion 16 and providing a recess or protrusion at the end of the curved portion 14 that engages with the protrusion or recess, it is possible to prevent this from happening. In this jiggling device 4, the bending section 14, the placement section 15, and the base plate 20 are made of plate-like members, so when not in use, they can be stacked together as shown in Figure 17 and tied with elastic string material 30 to make it compact and improve portability and storage capacity. In addition, the main body 10 has a hollow structure, making it lightweight. In this structure, a non-elastic string material 31 having no elasticity may be used instead of the elastic string material 30 as shown in FIG. 18. In this case, when jiggling is started from the state shown in FIG. 19(a), the curved part 14 and the placing part 15 are elastically deformed as shown by the broken line in FIG. 19(b) since the non-elastic string material 31 does not stretch, so that jiggling can be performed smoothly. By making the non-elastic string material 31 a member capable of adjusting the length using a hook-and-loop fastener or the like, the user can adjust the restoring force of the main body part 10 by adjusting the length of the non-elastic string material 31. When not in use, the curved part 14, the placing part 15 and the base plate 20 can be tied with the non-elastic string material 31 in a state where they are stacked as shown in FIG. 20, and since it becomes compact, portability and storage can be improved.

[0027] An example of a method for assembling the jiggling device 4 will now be described. As shown in Fig. 21(a), the mounting portion 15 has a recess 17 in the center of the left and right step portions 16, and as shown in Fig. 21(b), the base plate 20 has legs 21 on the inside of the left and right ends of its lower surface, and a protrusion 26 protruding from the center of the left and right ends. As shown in Fig. 21(c), when the mounting portion 15 and the base plate 20 are stacked, the recess 17 and the protrusion 26 fit together, allowing them to be integrated and compact when stacked. 22, the user places the mounting portion 15 on a table or other platform and hooks one of the left and right ends of the base plate 20 onto the step portion 16. Next, one of the left and right ends of the curved portion 14 is abutted against the step portion 16, and the other end is abutted against the leg portion 21. Next, as shown in Figure 23, the user holds down the curved portion 14 with one hand while tilting the base plate 20 with the other hand and tilting it towards the curved portion 14, thereby utilizing the principle of leverage to bend the curved portion 14, and then fits the other end of the curved portion 14 into the step portion 16 and butts it against it. Then, by pulling the base plate 20 upward as shown in FIG. 24, the bending portion 14 is held on the mounting portion 12 in a curved state. To remove the bending portion 14, the above steps can be carried out in reverse order. This assembly and disassembly method allows the bending portion 14 to be assembled and removed safely and easily.

[0028] [First embodiment] A first embodiment of the jiggling tool set of the present invention will be described, and the same reference numerals will be used to designate parts having the same configuration as those of the above-described embodiments, and the description thereof will be omitted. As shown in Figure 25, the jiggling tool set 5 of this embodiment uses a jiggling tool consisting of a main body 10 having a T-shaped cross-sectional shape as shown in the second embodiment and a base plate 20 having an M-shaped cross-sectional shape as used in the third embodiment, and further includes a support part 50, a support post 51, a floor support member 52 and a belt 53.

[0029] The support portion 50 is a member for placing the base plate 20 and supporting it from below. Specifically, the vertical cross section along the front-rear direction has a right-angled V-shape, and supports the base plate 20 by contacting the lower surface of the groove portion 24 of the base plate 20. By providing a removable fixing structure using a magnet, hook-and-loop fastener, or the like on the contact surface between the support portion 50 and the base plate 20, it is possible to prevent the base plate 20 from coming off during use, thereby improving convenience. The support pillar 51 is a member that extends downward and has its upper end fixed to the support portion 50. The length of the support pillar 51 may be variable.

[0030] The floor-standing member 52 is a member that prevents the support pillar 51 from shifting from the floor surface by being abutted against the chair leg 102. More specifically, the floor-standing member 52 is a rod-shaped member that extends in the left-right direction, and the lower end of the support pillar 51 is fixed to the center of the floor-standing member 52. Belt 53 is a member that is stretched between the seat of the chair and support part 50 or support pillar 51, and is used to adjust the inclination angle of support pillar 51 relative to the floor surface. Specifically, belt 53 is wrapped around the seat of the chair, and one end of the belt is fixed to support part 50 or support pillar 51. A belt stopper is provided at a position of belt 53 close to support part 50 or support pillar 51, allowing the length of belt 53 to be adjusted.

[0031] As shown in Figure 25(b), while sitting on the chair, the user uses the belt stopper to change the length of belt 53 and adjust the tilt angle of support pillar 51 to the optimum angle. Because floor support member 52 abuts against chair leg 102, there is no risk of the bottom end of support pillar 51 slipping on the floor even when support pillar 51 is tilted forward. The user places the base plate 20 on the support portion 50 and fits the curved portion 14 of the main body portion 10 into the groove portion 24 of the base plate 20. Then, the user places his / her calves on the placement portion 12 and performs jiggling. With this jiggling tool set 5, jiggling with calves resting can be done while sitting on a chair, which could only be done at a step in an entranceway or the like, and jiggling can be done in an optimal posture by adjusting the height of the support 51 and the length of the belt 53. The total length L1 of the jiggling equipment set, which is the distance between the top surface of the placement portion 12 and the bottom surface of the floor stand member 52, is desirably about the same as the seat height of the chair on which the user sits, with an optimum value of 30 to 60 cm. Also, the left-right length L2 of the floor stand member 52 needs to be larger than the left-right width of the front legs of the chair on which the user sits, with an optimum value of 35 cm or more. [Industrial Applicability]

[0032] The present invention provides a jiggling device, a jiggling device set, and a method for assembling a jiggling device that have a simple structure, can prevent the main body from slipping and falling off due to rocking, allows rocking motion in multiple directions, and is quiet when operating, and has industrial applicability. [Explanation of symbols]

[0033] 1 Jigging equipment 2 Jigging equipment 3 Jigging equipment 4 Jigging Equipment 5 Jiggle Ring Equipment Set 10 Main body 11 Curved section 12 Placement section 13 Connecting part 13a Holding plate 13b Gap 14 Curved section 15 Placement section 16 Step 17 Recess 20 Pedestal plate 21 Legs 22 Gap 23 Protrusion 24 Groove 25a~25c Corner 26 Convex 30 Elastic Cord Material 31 Inelastic string material 40 Fixed structure 41 Notch 50 Support part 51 Post 52 Floor-standing components 53 Belt 100 Corner 101 Floor plane 102 legs

Claims

1. A jiggling device comprising: a main body having a bottom surface curved downwardly at the center thereof and on which a user places both lower limbs; and a base plate disposed between the main body and a floor plane, A jiggling device comprising: an elastic string material stretched across the main body portion and the base plate; and a fixing structure for maintaining the position of the elastic string material on the main body portion and the base plate.

2. When a portion including a bottom surface of the main body is a curved portion and an upper surface of the main body is a placement portion, The curved portion and the placement portion are both plate-shaped, The longitudinal cross-sectional shape of the main body along the front-rear direction is T-shaped, 2. The jiggling tool according to claim 1, characterized in that the upper surface of the base plate is provided with a groove extending in the left-right direction and into which the lower end of the curved portion fits.

3. The longitudinal cross-sectional shape of the base plate along the front-rear direction is M-shaped, and the intersecting angles of the three corners forming the M shape are right angles, 3. The jiggling tool according to claim 2, characterized in that a recess in a central corner among the three corners serves as the groove.

4. 4. The jiggling device according to claim 2 or 3, characterized in that the curved portion is detachable from the mounting portion by snap-fitting.

5. When a portion including a bottom surface of the main body is a curved portion and an upper surface of the main body is a mounting portion, The curved portion is an elastic plate-like portion, The placement portion is plate-shaped, The left and right ends of the lower surface of the mounting portion are provided with left and right step portions against which the left and right ends of the curved portion abut, The left and right width of the curved portion is larger than the width between the left and right step portions, The jiggling device according to claim 1, characterized in that the curved portion is elastically deformed and fitted into the left and right step portions, and the left and right ends of the curved portion are abutted against the left and right step portions, thereby holding the curved portion in a downwardly convex curved state.

6. 6. The jiggling tool according to claim 5, further comprising a non-elastic string material having no elasticity in place of the elastic string material.

7. A jiggling tool according to claim 3; A jiggling equipment set comprising a support part on which the base plate is placed and supported from below, a pillar fixed to the support part and extending downward, a floor-standing member fixed to the lower end of the pillar, and a belt that is stretched between the seat of a chair on which a user sits and the support part or the pillar.

8. The method for assembling the jiggling tool according to claim 5, The base plate has legs on the inside of the left and right ends of the lower surface thereof, One of the left and right ends of the base plate is hooked onto the step portion, one of the left and right ends of the curved portion is abutted against the step portion, and the other end is abutted against the leg portion; A method for assembling a jiggling device, characterized in that the base plate is tilted toward the curved portion to bend the curved portion using the principle of leverage, and the other end of the curved portion is fitted into and butted against the step portion.

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