Jigging tools, jigging tool sets, and methods for assembling jigging tools.

Abstract

This invention provides a jigging device, a jigging device set, and a method for assembling a jigging device that have a simple structure that prevents the main body from shifting or falling off due to oscillating, allows for oscillating motion in multiple directions, and produces little operating noise. [Solution] The jigging device 1 of the present invention comprises a main body 10 whose bottom center is curved so as to be convex downwards and on which the user's lower limbs are placed on the upper surface, and a base plate 20 which is placed between the main body and the floor plane. The jigging device comprises an elastic cord material 30 which is stretched between the main body and the base plate, and a fixing structure 40 which holds the position of the elastic cord material on the main body and the base plate. The jigging device of the present invention stretches the elastic member between the main body and the base and holds the position with the fixing structure. Since the main body does not shift from the base during jigging, jigging can be performed stably for a long time. In addition, since the structure of the jigging device is simple, it can be easily used by the user in their daily life.

Description

Technical Field

[0001] The present invention relates to a jigging instrument, a jigging instrument set, and an assembling method of a jigging instrument, which have a simple structure, can prevent the main body from shifting and falling off due to rocking, enable rocking movements in multiple directions, and are unlikely to produce operating sounds.

Background Art

[0002] Jigging (so-called bottle shaking) refers to an exercise that moves the hip joint and knee joint in small increments by oneself, and has attracted attention as an exercise that can be expected to have a medical effect on various symptoms including osteoarthritis of the hip and osteoarthritis of the knee. As a device for assisting jigging, for example, Patent Document 1 discloses an exercise device including a semicircular main body portion, a base portion (pedestal) on which the main body portion is placed, a convex portion provided on the base portion to restrict the movement of the main body portion, and a concave portion formed on the lower surface of the main body portion and fitted with the convex portion. The same configuration is also disclosed in Patent Document 2. The user can perform jigging by placing both feet on the upper surface of the main body portion and moving them up and down alternately, and since the convex portion and the concave portion are fitted, it is possible to prevent the situation where the main body portion slides in the front-rear direction or the left-right direction on the base portion during jigging.

[0003] On the other hand, for example, Patent Document 3 discloses an instrument that can rock the main body portion in three directions: (1) a roll direction centered on the front-rear direction, (2) a pitch direction centered on the left-right direction, and (3) a yaw direction centered on the vertical direction, by smoothly curving the bottom surface of the main body portion so as to form an arc shape in the front-rear direction and the left-right direction.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

[0005] However, the technologies disclosed in the above-mentioned Patent Documents 1 and 2 have problems such as increased manufacturing costs due to the provision of protrusions and recesses, limitations on the direction of movement of the main body due to the fitting of the protrusions and recesses, and a tendency for friction noise to occur at the fitting parts. The technology disclosed in Patent Document 3 has the problem that, although the main body can swing in three directions, the main body tends to move on the support (base) and fall off during the swinging motion.

[0006] The present invention aims to provide a jigging device, a jigging device set, and a method for assembling a jigging device that have a simple structure, can prevent the main body from shifting or falling off due to oscillating, can enable oscillating motion in multiple directions, and produces little operating noise, taking these problems into consideration. [Means for solving the problem]

[0007] The jigging device of the present invention comprises a main body that is curved so as to be convex downward in the center of its bottom surface and on which the user's lower limbs are placed on its upper surface, and a base plate that is placed between the main body and the floor surface, and is characterized in that it comprises an elastic cord material that is stretched between the main body and the base plate, and a fixing structure for holding the hanging position of the elastic cord material on the main body and the base plate. Furthermore, when the portion including the bottom surface of the main body is designated as the curved portion and the top surface of the main body as the mounting portion, both the curved portion and the mounting portion are plate-shaped, the longitudinal cross-sectional shape of the main body along the front-to-back direction is T-shaped, and the top surface of the base plate is provided with a groove that extends in the left-to-right direction and into which the lower end of the curved portion fits. Furthermore, the base plate is characterized in that its longitudinal cross-sectional shape along the front-to-back direction is M-shaped, the intersection angle of each of the three corners forming the M shape is a right angle, and the recess of the central corner of the three corners is the groove. Furthermore, the curved portion is detachable from the aforementioned mounting portion by fitting it into place. Furthermore, the curved portion is in the shape of an elastic plate, the mounting portion is in the shape of a plate, and the lower surface of the mounting portion is provided with left and right stepped portions on both the left and right ends 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 stepped portions, the curved portion is elastically deformed and fitted into the left and right stepped portions, and the left and right ends of the curved portion abut against the left and right stepped portions, thereby holding the curved portion in a downwardly convex curved state. Furthermore, the invention is characterized by providing a non-elastic cord material instead of the elastic cord material.

[0008] The jigging device set of the present invention is characterized by comprising the jigging device, a support part that supports the base plate from below, a support column fixed to the support part and extending downward, a floor-standing member fixed to the lower end of the support column, and a belt that is stretched between the seat of a chair on which the user sits and the support part or the support column. The method for assembling the jigging device of the present invention is characterized in that, in the method for assembling the jigging device described above, the base plate is provided with legs on the inside from the left and right ends of the lower surface, one of the left and right ends of the base plate is hooked onto the stepped portion, one of the left and right ends of the curved portion is abutted against the stepped portion, the other end is abutted against the legs, 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 abutted against the stepped portion. [Effects of the Invention]

[0009] The jigging device of the present invention has an elastic cord stretched between the main body and the base plate, and a fixing structure is provided to maintain the position where the elastic cord is attached to the main body and the base plate. In this way, the main body and the base plate can be connected by the elastic cord. During jigging, the user's posture and foot movements create a biased horizontal force on the main body in one of the directions: front, back, left, or right. As a result, the trajectory of the contact point between the main body and the base plate moves slightly in one direction, causing the main body to shift away from the center of the base plate. However, this shift pulls the elastic cord, creating an elastic force that tries to return the main body to the center, stopping the shift and preventing the main body from falling off the base plate, thus allowing for stable jigging for extended periods. Furthermore, the use of elastic cord material eliminates friction and noise during jigging, resulting in a quiet operation. Additionally, the ability to integrate the main body and base plate improves portability.

[0010] By making the longitudinal cross-sectional shape of the main body T-shaped along the front-to-back direction, and providing a groove in the base plate into which the lower end of the plate-shaped curved section fits, the main body can not only rotate and swing from side to side, but also rotate and swing in the front-to-back direction around the lower end of the curved section, or rotate and swing in the horizontal plane by utilizing the torsional elastic deformation of the plate-shaped curved section. Because it can swing in multiple directions in this way, it is possible to more effectively improve and prevent various symptoms, including osteoarthritis of the knee and osteoarthritis of the hip. Furthermore, since the lower end of the curved section fits into the groove of the base plate, it will not come out of the groove during rotational oscillation, thus suppressing the front-to-back displacement of the main body without relying on elastic cord material. Furthermore, the elastic cord prevents the main body from tipping over in either the forward or backward direction when not in use.

[0011] The vertical cross-sectional shape of the base plate along the front-to-back direction is made M-shaped, and the intersection angles of each of the three corners forming the M are right angles. By making the recess of the central corner of these three corners a groove, the device can be used not only on a flat floor but also on steps such as those in an entrance hall by hooking the M-shaped base plate onto the step. By fitting the curved part into the mounting part so that it can be detachably attached and detached, the jigling tool can be disassembled to enhance portability. Also, when the tip of the curved part wears out, only the curved part can be replaced. If both the curved part and the mounting part are made plate-shaped and the curved part is held in a combined state while being bent using the stepped part provided on the lower surface of the mounting part, when not in use, it can be disassembled and the curved part, mounting part, and pedestal can be stacked and tied with an elastic string material to become compact, enhancing portability and storage capacity. Also, even if a non-elastic string material without elasticity is used instead of the elastic string material, since the curved part and the mounting part are elastically deformed, jigling can be performed smoothly. According to the jigling tool set of the present invention, jigling performed at a stepped part such as an entrance can be performed even while sitting on a chair, improving convenience. According to the assembling method of the jigling tool of the present invention, the curved part is assembled to the mounting part using the principle of a lever, making the assembly easy.

Brief Explanation of Drawings

[0012] [Figure 1] Perspective view of the jigling tool of the first embodiment [Figure 2] Side views (a) and (b) of the jigling tool [Figure 3] Front views (a) and (b) of the jigling tool [Figure 4] Perspective view showing a modified example of the jigling tool [Figure 5] Perspective view showing a modified example of the jigling tool [Figure 6] Perspective view of the jigling tool of the second embodiment [Figure 7] Side views (a) to (c) of the jigling tool [Figure 8] Front views (a) and (b) of the jigling tool [Figure 9] Perspective view showing the rotation pattern of the jigling tool [Figure 10] Exploded perspective view (a) showing a modified example of the jigling tool and perspective view (b) showing the storage state of the jigling tool [Figure 11]Perspective view of the jigging tool according to the third embodiment [Figure 12] Side view showing the usage method of the jigging tool [Figure 13] Side view showing the usage method of the jigging tool [Figure 14] Side view showing the usage method of the jigging tool [Figure 15] Perspective view of the main body according to the fourth embodiment [Figure 16] Perspective view of the jigging tool [Figure 17] Perspective view showing the storage state of the jigging tool [Figure 18] Perspective view showing a modified example of the jigging tool [Figure 19] Front views (a) and (b) of the jigging tool [Figure 20] Perspective view showing the storage state of the jigging tool [Figure 21] Bottom view and side views (a) to (c) showing the assembly method of the jigging tool [Figure 22] Front view showing the assembly method of the jigging tool [Figure 23] Front view showing the assembly method of the jigging tool [Figure 24] Front view showing the assembly method of the jigging tool [Figure 25] Front views (a) showing a part of the jigging tool set and side view (b) showing the usage method

Mode for Carrying Out the Invention

[0013] [First Embodiment] The first embodiment of the jigging tool of the present invention will be described. The jigging tool of the present embodiment is basically used on a horizontal floor plane. In addition to the floor plane, it can be used on a mat laid on the floor, on the lower surface of a step such as an entrance, on outdoor ground, etc., and on the floor of vehicles such as trains, buses, cars, airplanes, etc., but is not limited thereto.

[0014] As shown in Figure 1, the jigging device 1 comprises a main body 10, a base plate 20, an elastic cord material 30, and a fixing structure 40. The main body 10 is curved so that the center of its bottom surface is convex downwards, and the user rests both lower limbs on its upper surface during use. Hereinafter, the part of the main body 10 including the bottom surface will be referred to as the curved part 11, and the upper surface of the main body 10 will be referred to as the resting part 12. The bottom of the curved section 11 has its lowest point at its center in the left-right direction, and the curve extends from the lowest point in the left-right direction, connecting to the left and right ends of the mounting section 12.

[0015] The resting section 12 is primarily used for the user to rest their left and right feet while seated in a chair, but as described later, the user may also rest their left and right calves on it. The base plate 20 is a plate-shaped member placed between the main body 10 and the floor surface 101. In this embodiment, legs 21 are provided on the left and right sides of the lower surface of the base plate 20, thereby creating a gap 22 when the base plate 20 is placed on the floor surface 101. It is desirable to provide an anti-slip structure or attach anti-slip material to the bottom surface of the legs 21. The material of the main body 10 and the base plate 20 is not particularly limited and may be expanded polystyrene, expanded polyurethane, plastic, wood, metal, or paper. Furthermore, it may have either a filled cross-section or a hollow cross-section.

[0016] The elastic cord material 30 is an elastic cord-like member that is stretched between the main body 10 and the base plate 20, and has the function of securing the main body 10 to the upper surface of the base plate 20. Examples of the elastic cord material 30 include a member called rubber rope, draw cord, or rubber cord, which has a core made of fluororubber, silicone rubber, urethane rubber, chloroprene rubber, nitrile rubber, ethylene propylene rubber, natural rubber, etc., and is reinforced with a tube woven from fibers such as nylon or polyester. The elastic cord material 30 stretches and contracts during jigging, but does not produce any sound at this time. Furthermore, the elastic cord material 30 can function similarly not only with a circular cross-section, but also with an elastic, belt-shaped material. The fixing structure 40 is provided to hold the position of the elastic cord 30 that is stretched between the main body 10 and the base plate 20. Specifically, notches 41 serving as the fixing structure 40 are provided at the corners of the mounting section 12 and the base plate 20, and the elastic cord 30 is hooked into these notches 41. The elastic cord 30 passes through the gap 22 on the underside of the base plate 20.

[0017] This document explains how to use the jigging device 1 and the function of the elastic cord material 30. The user sits on a chair and places both feet on the left and right sides of the mounting section 12 of the main body 10, which is placed on the base plate 20. An elastic cord material 30 is stretched across 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 moving both feet up and down alternately.

[0018] As shown by arrow B in Figures 2(b) and 3(b), during jigging, the main body 10 tends to shift in one direction from the center of the upper surface of the base plate 20. However, the elastic cord 30 catches on the notch 41 of the main body 10, and the elastic force of the cord 30 pulls the main body 10 back to the center of the base plate 20, so the displacement of the main body 10 remains within a range that does not cause problems in practical use. In addition, since the elastic cord 30 also catches on the corners of the base plate 20 with the notch 41, it is also possible to prevent the elastic cord 30 from shifting away from the center of the base plate 20 during jigging. When the user removes their foot from the main body 10, the structure of the curved section 11 automatically returns the main body 10 to its original state as shown in Figure 3(a). Furthermore, the elastic force of the elastic cord material 30 also exerts a restoring force that attempts to return the main body 10 to its original state. By adjusting the elastic force of the elastic cord material 30, the restoring force of the main body 10 can be adjusted according to the user's preference. In addition, as shown in Figure 4, the shape of the fixing structure 40 and the way the elastic cord material 30 is attached may be such that the elastic cord material 30 is doubled and crossed over the upper surface of the mounting part 12, or as shown in Figure 5, the elastic cord material 30 may be hooked onto the projections 23 provided at the front and rear ends of the base plate 20. The elastic cord material 30 is ring-shaped, but the ends of a single cut piece are tied together to form the ring. This allows the user to change the position of the knot and adjust the elastic force of the elastic cord material 30. Alternatively, the elastic cord material 30 can be made as a single piece rather than a ring, with knots made at both ends, and the knots can be hooked onto the base plate 20 or the main body 10. In any method of attaching the elastic cord 30, the elastic cord 30 stretches and contracts during jigging, but no sound is generated from the elastic cord 30 or from other parts, thus achieving quiet operation of the device. Furthermore, the elastic cord 30 allows the main body 10 and the base plate 20 to be integrated, improving portability. The optimal width W1 of the mounting section 12 is 25-60 cm, and the optimal width W2 is 5-20 cm. The optimal height h1 of the main body between the top surface of the mounting section 12 and the lowest point of the curved section 11 is 5-20 cm. The optimal ratio of the main body height h1 to the front-to-back width W2 of the mounting section 12, h1 / W2, is 0.3-1.2.

[0019] [Second Embodiment] A second embodiment of the jigging device of the present invention will now be described, but parts that have the same configuration as in the first embodiment will be denoted by the same reference numerals and their descriptions will be omitted. As shown in Figures 6 to 8, the jigging device 2 of this embodiment has both a curved portion 11 and a mounting portion 12 that are plate-shaped. By fixing the upper end of the curved portion 11 to the lower surface of the mounting portion 12, the longitudinal cross-sectional shape along the front-to-back 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] As shown in Figures 7(a) to (c), the lower end of the curved portion 11 is fitted into the groove 24 of the base plate 20. Therefore, during rotational oscillation, the lower end of the curved portion 11 does not come out of the groove of the base plate 20, and the forward and backward displacement of the main body 10 can be suppressed without relying on the elastic cord 30. In addition, the elastic cord 30 prevents the main body 10 from falling over in either the forward or backward direction when not in use. Furthermore, even when the foot is removed from the state shown in Figures 7(b) and (c), the inclined state of the main body 10 is maintained. As shown by arrow B in Figure 8(b), during jigging, the main body 10 tends to shift to the left or right from the center of the upper surface of the base plate 20. However, the elastic cord 30 catches on the notch 41 of the main body 10, and the elastic force of the elastic cord 30 pulls the main body 10 back to the center of the base plate 20. Therefore, the lateral displacement of the main body 10 remains within a range that does not cause problems in practical use. Furthermore, since the elastic cord material 30 is also hooked onto the corners of the base plate 20 by the notches 41, it is possible to prevent the elastic cord material 30 from shifting away from the center of the base plate 20 during jigging. By making the curved portion 11 plate-shaped and configuring it so that the lower end of the curved portion 11 fits into the groove 24, the main body 10 not only moves up and down on its left and right sides around an axis extending in the front-to-back direction (front-to-back axis) as the center of rotation, as shown in Figure 9, but also rotates in the front-to-back direction around an axis extending in the left-to-right direction (left-to-right axis) as the center of rotation, as shown in Figures 7(b), (c) and 9. Furthermore, by forming the plate-shaped curved portion 11 from an elastic plate material, it is also possible to rotate it in the horizontal plane around an axis extending in the up-to-down direction (up-to-down axis) by utilizing the torsional elastic deformation around the lower end of the curved portion 11 that fits into the groove 24. In addition, the main body 10 can be held in a rotated state (inclined state) in the front-to-back direction by using the elastic cord material 30.

[0021] Compared to the jigging device 1 of the first embodiment, the jigging device 2 of this embodiment is capable of rotation in the front-rear direction around the lower end of the curved portion 11 and rotation in the horizontal plane, enabling a wider variety of jigging, including movement of the ankle joint. Furthermore, since the curved section 11 and the mounting section 12 can be constructed from sheet metal, they are readily available on the market, allowing the jigging device 2 to be manufactured inexpensively and also lighter. Since the curved section 11 and the base plate 20 are subjected to load at point contact, a combination of materials suitable for wear resistance and friction noise reduction is desirable. Specifically, prototype experiments showed that combinations of MDF board for both sections, or MDF board for the curved section 11 and metal such as aluminum for the entire base plate 20 or groove section 24, were good. MDF board, whose formal name is Medium Density Fiberboard, is a type of wood-based board. In Japanese, it is called medium-density fiberboard or medium-density fiberboard, and is made by forming finely crushed wood into a board. As shown in the following table (Source: Safety Data Sheet (SDS)), MDF board contains paraffin wax components to improve moisture resistance and water resistance, and these wax components contribute to wear resistance and friction noise reduction. [Table 1] The thickness t1 of the plate material in the curved section 11 is suitable to be between 3 and 20 mm. The depth d1 of the groove 24 is preferably equal to or greater than the thickness t1 of the plate material in the curved section 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 in the curved section 11. The cross-sectional shape of the groove 24 is preferably a smooth concave shape. The fixing position of the curved portion 11 is preferably on the center line extending in the left-right direction from the lower surface of the mounting portion 12, and the fixing angle of the curved portion 11 is preferably perpendicular to the mounting portion 12. The longitudinal cross-sectional shape in the front-rear direction of the lower end of the curved portion 11 is preferably a smooth convex shape.

[0022] In this embodiment, the curved portion 11 is fixed to the mounting portion 12, but as shown in Figure 10(a), the curved portion 11 may be detachable from the mounting portion 12. 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 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, thereby detachably connecting the curved portion 11 and the mounting portion 12. If the gap 13b has a U-shaped equisectional cross-section in the left-right direction, the fitted curved portion 11 may shift laterally during use. By partially providing a build-up in the gap 13b to connect and integrate the clamping plates 13a, and by providing a notch at the upper end of the curved portion 11 to accommodate this build-up, the left-right shift of the curved portion 11 can be prevented. In addition, the partial integration of the clamping plates 13a by the build-up increases the strength of the connecting portion 13, making it easier to design the strength balance between the connecting portion 13 and the curved portion 11. Furthermore, when not in use, these can be stacked and tied together with an elastic cord 30 or the like, as shown in Figure 10(b), making them compact and improving portability and storage. When the tip of the curved section 11 wears out, only the curved section 11 needs to be replaced. The user's jigging sensation changes depending on the height and curvature of the curved section 11, so the user can obtain a jigging sensation that suits their preference by appropriately replacing the curved section 11.

[0023] [Third Embodiment] A third embodiment of the jigging device of the present invention will now be described, but parts that have the same configuration as in the above embodiments will be denoted by the same reference numerals and their descriptions will be omitted. As shown in Figure 11, the jigging device 3 of this embodiment has an M-shaped vertical cross-section along the front-rear direction of the base plate 20, and furthermore, the intersection angles of the three corners 25a to 25c that form the M shape are right angles, and the downwardly convex corner 25b located in the center of the three corners 25a to 25c is a groove 24.

[0024] The main body 10 uses the one with a T-shaped vertical cross-section as shown in the second embodiment. After placing the main body 10 as shown in Figure 11, the elastic cord material 30 is stretched between the base plate 20 and the main body 10. This method of stretching ensures that the elastic cord material 30 is not present on the underside of the base plate 20, enabling the step-level hooking of the base plate 20, which will be explained 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 to secure it, allowing jiggling to be performed in various places with corners, such as steps at entrances. In this case, the calves, rather than the feet, are placed on the support 12, resulting in a different jiggling effect than when the feet are placed on it. Also, as shown in Figure 14, the base plate 20 can be placed on the floor surface 101 and the feet can be placed on it for use. By making the cross-section of the base plate 20 the M-shape described above, the device becomes symmetrical front to back, eliminating the need for users to align it, thus improving convenience.

[0025] [Fourth Embodiment] A fourth embodiment of the jigging device of the present invention will now be described, but parts that have the same configuration as in the above embodiments will be denoted by the same reference numerals and their descriptions will be omitted. As shown in Figure 15, the jigging device 4 of this embodiment has both a curved portion 14 and a mounting portion 15 that are plate-shaped. It is characterized by having stepped portions 16 at both the left and right ends of the lower surface of the mounting portion 15 for abutting against the left and right ends of the curved portion 14.

[0026] The stepped section 16 consists of two rod-shaped bodies extending in the front-to-back direction. The width of the curved section 14 is made larger than the width between the two stepped sections 16. The user can bend the curved portion 14 by pressing one of its left or right ends (for example, the right end) against the stepped portion 16, then elastically deform the curved portion 14 and fit it into the stepped portions 16 on both sides, and then press the other end (for example, the left end) against the stepped portion 16 to hold the curved portion 14 in a downwardly convex curved state as shown in Figure 16. The curved section 14, which has a pre-curved shape, can be made by overlapping two or more thin flat plates and bonding them together with adhesive or the like in a curved state. In this interlocking structure, there is a possibility that the interlocking position of the curved portion 14 in the front-to-back direction may shift during use. This shift can be prevented by providing a protrusion or recess on a part of the stepped portion 16 and a recess or protrusion that interlocks with them at the end of the curved portion 14. With this jigging device 4, the curved section 14, the mounting section 15, and the base plate 20 are made of plate-like materials. Therefore, when not in use, they can be stacked and tied together with the elastic cord 30 as shown in Figure 17, making them compact and improving portability and storage. In addition, the main body 10 has a hollow structure, which allows for weight reduction. In this structure, as shown in Figure 18, a non-elastic cord 31 may be used instead of the elastic cord 30. In this case, when jigging is started from the state shown in Figure 19(a), the curved section 14 and the mounting section 15 will elastically deform as shown by the dashed line in Figure 19(b), since the non-elastic cord 31 does not stretch, allowing for smooth jigging. By making the non-elastic cord 31 a length-adjustable component using hook-and-loop fasteners or the like, the user can adjust the length of the non-elastic cord 31 to adjust the restoring force of the main body 10. When not in use, the curved section 14, the mounting section 15, and the base plate 20 can be stacked and tied together with the non-elastic cord 31 as shown in Figure 20, making it compact and improving portability and storage.

[0027] This section describes an example of how to assemble jigging device 4. As shown in Figure 21(a), the mounting section 15 has a recess 17 in the center of the left and right stepped sections 16, and as shown in Figure 21(b), the base plate 20 has legs 21 extending inward from the left and right ends of its lower surface, and protrusions 26 projecting from the center of the left and right ends. As shown in Figure 21(c), when the mounting section 15 and the base plate 20 are stacked, the recess 17 and the protrusions 26 fit together, allowing for integration and miniaturization when stacked. As shown in Figure 22, the user places the mounting section 15 on a table or other surface and hooks one of the left or right ends of the base plate 20 onto the stepped section 16. Next, one of the left or right ends of the curved section 14 is abutted against the stepped section 16, and the other end is abutted against the leg section 21. Next, as shown in Figure 23, the user holds down the curved section 14 with one hand while tilting the base plate 20 with the other hand and pushing it towards the curved section 14, thereby using the principle of leverage to bend the curved section 14 and fitting the other end of the curved section 14 into the stepped section 16 and butting it against it. Then, as shown in Figure 24, by pulling the base plate 20 upward, the curved portion 14 is held in the curved state on the mounting portion 12. To remove the curved section 14, simply follow the reverse procedure. This assembly and disassembly method allows for safe and easy assembly and removal of the curved section 14.

[0028] [First Embodiment] A first embodiment of the jigging tool set of the present invention will now be described, but parts that have the same configuration as in the above embodiments will be denoted by the same reference numerals and their descriptions will be omitted. As shown in Figure 25, the jigging tool set 5 of this embodiment uses a jigging tool consisting of a main body 10 with a T-shaped vertical cross-section as shown in the second embodiment and a base plate 20 with an M-shaped vertical cross-section used in the third embodiment, and further includes a support part 50, a support column 51, a floor-standing member 52, and a belt 53.

[0029] The support portion 50 is a member for supporting the base plate 20 from below by placing it on top. Specifically, its longitudinal cross-sectional shape along the front-to-back direction is a right-angled V shape, and it supports the base plate 20 by contacting the lower surface of the groove portion 24 of the base plate 20. By providing a detachable fixing structure using magnets, hook-and-loop fasteners, etc., on the contact surface between the support part 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 column 51 has its upper end fixed to the support part 50 and is a member that extends downward. The length of the support column 51 may be made variable.

[0030] The floor-standing member 52 is a component that prevents the support column 51 from shifting position on the floor surface by abutting against the chair legs 102. 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 column 51 is fixed to its center. The belt 53 is stretched between the seat of the chair and the support part 50 or the support column 51, and is a component used to adjust the inclination angle of the support column 51 relative to the floor. Specifically, the belt 53 is wrapped around the seat of the chair, and one end of it is fixed to the support part 50 or the support column 51. A belt stopper is provided near the support part 50 or the support column 51 of the belt 53, which allows for length adjustment of the belt 53.

[0031] As shown in Figure 25(b), the user changes the length of the belt 53 using the belt stopper while seated in the chair, adjusting the tilt angle of the support column 51 to be optimal. Because the floor-standing member 52 abuts against the chair legs 102, there is no risk of the lower end of the support column 51 sliding on the floor even when the support column 51 is tilted forward. The user places the base plate 20 on the support part 50 and fits the curved part 14 of the main body part 10 into the groove part 24 of the base plate 20. Then the user places their calf on the resting part 12 and performs jigging. This jigging device set 5 makes it possible to perform calf jigging, which was previously only possible on steps such as those at the entrance, while sitting in a chair. By adjusting the height of the support column 51 and the length of the belt 53, it becomes possible to perform jigging in the optimal posture. The total length L1 of the jigging device set, which is the distance between the upper surface of the mounting section 12 and the lower surface of the floor-standing member 52, should preferably be about the same as the seat height of the chair the user sits on, and a suitable value is 30 to 60 cm. In addition, the left-right length L2 of the floor-standing member 52 must be greater than the left-right width of the front legs of the chair the user sits on, and a suitable value is 35 cm or more. [Industrial applicability]

[0032] The present invention provides a jigging device, a jigging device set, and a method for assembling a jigging device, which have a simple structure that prevents the main body from shifting or falling off due to oscillating, allows for oscillating motion in multiple directions, and produces little operating noise, and has industrial applicability. [Explanation of symbols]

[0033] 1. Jigging tool 2. Jigging tools 3. Jigging tools 4. Jigging tools 5 Jigging Tool Set 10 Main body 11 Curved section 12 Mounting section 13 Connecting part 13a Holding plate 13b Gap 14 Curved section 15 Mounting section 16 Stepped section 17 Recess 20 Base plate 21 Legs 22 gaps 23 Protrusion 24 grooves 25a~25c Corner 26 Convex part 30 Elastic cord material 31 Non-elastic cord material 40 Fixed structure 41 Notches 50 Support part 51 Post 52 Floor-standing components 53 belt 100 corners 101 Floor plane 102 legs

Claims

1. A jigging device comprising a main body that curves downwards at the center of its base and on which the user's lower limbs rest, and a base plate positioned between the main body and the floor surface, A jigging device characterized by comprising an elastic cord material stretched across the main body and the base plate, and a fixing structure for holding the elastic cord material in place on the main body and the base plate.

2. When the portion including the bottom surface of the main body is considered the curved portion, and the top surface of the main body is considered the mounting portion, Both the curved portion and the previously described mounting portion are plate-shaped, The longitudinal cross-sectional shape of the main body along the front-to-back direction is T-shaped, The jigging device according to claim 1, characterized in that it has a groove extending in the left-right direction on the upper surface of the base plate into which the lower end of the curved portion fits.

3. The longitudinal cross-sectional shape of the base plate along the front-to-back direction is M-shaped, and furthermore, the intersection angles of each of the three corners forming the M shape are right angles. The jigging device according to claim 2, characterized in that the recess of the central corner of the three corners is the groove.

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

5. The curved portion is in the shape of an elastic plate, The mounting portion is plate-shaped, The lower surface of the mounting portion is provided with left and right stepped portions at both ends to abut the left and right ends of the curved portion. The width of the curved portion is greater than the width between the stepped portions on the left and right. The jigging device according to claim 1, characterized in that the curved portion is elastically deformed and fitted into the stepped portions on the left and right, and the left and right ends of the curved portion are abutted against the stepped portions on the left and right, thereby holding the curved portion in a downwardly convex curved state.

6. The jigging device according to claim 5, characterized in that it comprises a non-elastic cord material that does not possess elasticity instead of the elastic cord material.

7. The jigging device according to claim 3, A jigging tool set characterized by comprising a support part that supports the base plate from below, a support column fixed to the support part and extending downward, a floor-standing member fixed to the lower end of the support column, and a belt that is stretched between the seat of a chair on which the user sits and the support part or the support column.

8. In the method for assembling a jigging device according to claim 5, The base plate has legs attached to the inside from the left and right ends of the lower surface, Hook one of the left or right ends of the base plate onto the stepped portion, One end of the curved portion is placed against the stepped portion, and the other end is placed against the leg portion. A method for assembling a jigging device, characterized by tilting the base plate toward the curved portion, thereby using the principle of leverage to curve the curved portion, and fitting the other end of the curved portion into the stepped portion and abutting it.

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