JP6522846B1 - Health appliances - Google Patents

Abstract

An object of the present invention is to be used for a chair of any shape, and to allow easy stretching exercise. SOLUTION: A plurality of first members having a cylindrical central shaft portion, a cylindrical shape and a hollow portion which is a through hole between end surfaces, and a cylindrical shape having an outer periphery smaller than the outer periphery of the first member A plurality of spacers provided with hollow portions which are through holes between the end surfaces, the spacers being disposed between the first members, and the middle shaft portion being the first members And the hollow portion of the spacer. [Selected figure] Figure 1

Description

  The present invention relates to a health device.

  For example, there is a technique described in Patent Document 1 as a device for solving the problem of the body occurring at the time of sitting.

JP, 2007-20286, A

  The technique described in Patent Document 1 uses a dedicated chair. Therefore, it can not be used for a chair already owned or a chair equipped with a car or the like.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a health device which enables a stretch exercise easily with any chair.

  Although this application contains multiple means to solve at least one part of the said subject, if the example is given, it is as follows. A health device according to one aspect of the present invention for solving the above problems comprises: a cylindrical central shaft; and a plurality of first members which are cylindrical and provided with hollow portions which are through holes between end surfaces; A plurality of spacers, each having a cylindrical shape with an outer periphery smaller than the outer periphery of the first member and provided with a hollow portion that is a through hole between end surfaces, the spacer being between the first members And the central shaft portion is inserted into the hollow portion of the first member and the spacer.

  In addition, the health device further includes a substantially circular hemispherical second member, and the spacer is further disposed between the first member and the second member, and the center shaft inserted into the hollow portion. The second member may be attached to both ends of the part.

  In addition, the central shaft portion has convex portions at both ends, and the second member has a concave portion on an inner end surface which is a contact surface with the adjacent spacer, and the convex portion and the concave portion are fitted together Thus, the second member may be attached to both ends of the middle shaft portion.

  The health device may further include a cylindrical second member, and the second member may be attached to both ends of the center shaft inserted into the hollow portion.

  In addition, the first member, the spacer, and the middle shaft portion may have an elliptic cylindrical shape whose outer peripheral shape is substantially elliptical.

  Further, the second member may be elliptical hemispherical.

  In addition, the second member may be an elliptic cylinder having an outer peripheral shape that is substantially elliptical.

  In addition, the first member, the spacer, and the middle shaft portion may be aligned in the major axis direction.

  Further, the spacer may be formed using a material having a small friction and a hardness, as compared to the material of the central shaft portion, the first member, and the second member.

  In addition, the central shaft portion may be formed using a material having flexibility to be deformed according to a tensile stress and a tear stress of bending which occur during use of a health device.

  According to the health device according to one aspect of the present invention, it can be used for a chair of any shape, and enables easy stretching exercise.

It is a figure regarding an example of the health appliance concerning one embodiment of the present invention. FIG. 1 (a) is a front view of a health device. FIG. 1 (b) is a side view of the health device as viewed from the front right side. FIG. 1 (c) is a plan view of the health device as viewed from above. It is sectional drawing of the up-down direction which passes along the axial center O of the health instrument which concerns on one Embodiment of this invention. It is a figure regarding an example of the 1st member concerning one embodiment of the present invention. FIG. 3A is a front view of the first member. FIG.3 (b) is the side view which looked at the 1st member from the front right side. FIG.3 (c) is the top view which looked at the 1st member from the upper side. It is a figure regarding an example of the spacer concerning one embodiment of the present invention. FIG. 4A is a front view of the spacer. FIG.4 (b) is the side view which looked at the spacer from the front right side. FIG.4 (c) is the top view which looked at the spacer from the upper side. It is a figure regarding an example of the 2nd member concerning one embodiment of the present invention. FIG. 5A is a front view of the second member. FIG.5 (b) is the side view which looked at the 2nd member from the front right side. FIG.5 (c) is the top view which looked at the 2nd member from the upper side. FIG.5 (d) is the side view which looked at the 2nd member from the front left side. It is a figure showing an example of the axial part concerning one embodiment of the present invention. FIG. 6A is a front view of the central shaft portion. FIG.6 (b) is an end elevation of the AA cutting part shown to Fig.6 (a). FIG.6 (c) is the top view which looked at the center axis part from the upper side. FIG. 6D is a side view of the convex portion of the middle shaft portion as viewed from the front right direction. It is a figure showing an example at the time of using a health appliance in the state where it sat on a chair. FIG. 7A shows the case of using the health device 100 in the vertical direction, and shows the state of the health device 100 in a posture in which the user does not lean too much against the backrest. FIG. 7 (b) shows the case where the health device 100 is used vertically, and shows the state of the health device 100 in a posture in which the user puts weight on the backrest and leans. FIG. 7C shows the case where the health device 100 is used sideways, and shows the state of the health device 100 in a posture in which the user puts weight on the backrest and leans. It is a figure showing an example of the state where the health appliance concerning one embodiment of the present invention was bent. It is a figure regarding the health instrument which concerns on other embodiment of this invention. FIG. 9 (a) is a front view of the health device. FIG. 9 (b) is a side view of the health device as viewed from the front right side. FIG.9 (c) is the top view which looked at the health appliance from the upper side. It is sectional drawing of the up-down direction which passes along the axial center O of the health instrument which concerns on other embodiment of this invention. It is a figure regarding an example of the axial part which concerns on other embodiment of this invention. FIG. 11A is a front view of the center shaft portion. FIG.11 (b) is the side view which looked at the center axis part from the front right side. FIG.11 (c) is the top view which looked at the center axis part from the upper side. It is a figure regarding an example of the 2nd member concerning other embodiments of the present invention. FIG. 12A is a front view of the second member. FIG.12 (b) is the side view which looked at the 2nd member from the front right side. FIG.12 (c) is the top view which looked at the 2nd member from the upper side. FIG.12 (d) is the side view which looked at the 2nd member from the front left side.

  Hereinafter, each embodiment of the present invention will be described using the drawings.

First Embodiment
FIG. 1 is a diagram related to an example of a health device 100 according to the present embodiment. Specifically, FIG. 1 (a) is a front view of the health device 100. FIG. FIG. 1 (b) is a side view of the health device 100 as viewed from the front right side. FIG. 1C is a plan view of the health device 100 as viewed from above. FIG. 2 is a cross-sectional view of the health device 100 in a plane passing through the axial center O.

  As shown in these figures, the health device 100 is composed of a center shaft 10, a plurality of first members 20, a plurality of spacers 30, and a pair of second members 40. The first member 20 and the spacer 30 having a substantially elliptical shape with a predetermined thickness are provided with hollow portions 50 and 60 which are axial through holes in a region including the center of the outer peripheral ellipse. The substantially elliptical hemispherical second member 40 is provided with a substantially elliptic spherical recess 70 on the inner end surface which is the surface adjacent to the spacer 30.

  In the health device 100, the central shaft portion 10 is inserted into the hollow portions 50, 60 of the first member 20 and the spacer 30, and the substantially elliptical spherical convex portions 12 provided at both ends of the central shaft portion 10 are the second members. It has a structure fitted to the recess 70 of 40.

  Such a health device 100 has the end face of the second member 40 facing the vicinity of the outer periphery between the opposing end faces of the adjacent first members 20 and the vicinity of the outer periphery of the end face of the first member 20 by the function of the spacer 30. A gap L is formed between the vicinity of the outermost periphery of As a result, the health device 100 can be easily bent (bent) in the direction in which the both ends are brought close to each other, and the bending can be improved. In addition, the health device 100 having such characteristics can be fitted to a chair of any shape, and can obtain an effect of increasing the stretching effect.

  The number of the first members 20 and the spacers 30 is not limited, as long as the number of the first members 20 and the number of the spacers 30 are optimal.

  Hereinafter, each part which comprises the health instrument 100 is demonstrated in detail.

  FIG. 3 is a view regarding an example of the first member 20. As shown in FIG. Specifically, FIG. 3A is a front view of the first member 20. FIG. FIG. 3B is a side view of the first member 20 as viewed from the front right side (or front left side). FIG.3 (c) is the top view which looked at the 1st member 20 from the upper side. As illustrated, the first member 20 is an elliptic cylinder whose outer periphery is a substantially elliptic, and has a substantially elliptical hollow portion 50 axially penetrating the first member 20 in a region including the center of the outer periphery ellipse. . The hollow portion 50 is formed at a position where the center coincides with the center of the outer peripheral ellipse of the first member 20 or in the vicinity of the center, and the major axis is aligned with the long axis direction of the outer peripheral ellipse of the first member 20 .

  The dimensions of the first member 20 are about 10 cm for the major axis of the perimeter ellipse and about 8 cm for the minor axis. Further, the thickness of the first member 20, that is, the axial length of the center shaft portion 10 inserted into the hollow portion 50 is about 5 cm. Also, the dimensions of the major and minor axes of the hollow portion 50 are any dimensions (for example, about 3.9 cm for the major axis and about 2.9 cm for the minor axis) in which the central shaft portion 10 can be inserted. In addition, these dimensions are an example, Comprising: It does not specifically limit and should just be suitably set according to a user's figure and the use purpose.

  Although the material and material of the first member 20 are not particularly limited, those having elasticity, flexibility and light weight are preferable. For example, an EVA (Ethylene Vinyl Acetate Copolymer) resin or the like is used as the material of the first member 20.

  In order to enhance the stretching effect, a material having a relatively high hardness and a low flexibility may be used as the material of the first member 20. For example, foamed polyethylene of an olefin resin is used as the material and material of the first member 20 in this case.

  FIG. 4 is a diagram regarding an example of the spacer 30. As shown in FIG. Specifically, FIG. 4A is a front view of the spacer 30. FIG. FIG. 4B is a side view of the spacer 30 as viewed from the front right side. FIG. 4C is a plan view of the spacer 30 as viewed from the upper side. As illustrated, the spacer 30 is a thin elliptic cylinder whose outer periphery is substantially elliptical and thin, and has a substantially elliptical hollow portion 60 axially penetrating the spacer 30 in a region including the center of the outer peripheral ellipse. There is. The hollow portion 60 is formed at a position where the center coincides with the center of the outer circumference oval of the spacer 30, or in the direction in which the major axis coincides with the long axis direction of the outer circumference oval of the spacer 30.

  The dimension of the spacer 30 is extremely thin compared to the thickness of the first member 20, and is formed one size smaller than the outermost periphery of the first member 20 and the outermost periphery of the second member 40. Specifically, the dimensions of the spacer 30 are about 7.5 cm for the major axis of the perimeter ellipse and about 5.5 cm for the minor axis. Further, the thickness of the spacer 30, that is, the axial length of the center shaft portion 10 inserted into the hollow portion 50 is about 0.5 cm. Also, the dimensions of the major and minor axes of the hollow portion 50 are any dimensions (for example, about 3.9 cm for the major axis and about 2.9 cm for the minor axis) in which the central shaft portion 10 can be inserted.

  In addition, although these dimensions are an example and it does not specifically limit, the length of the major axis and the minor axis of the spacer 30 is the length and the minor axis of the major surface and the minor axis of the first member 20 It is preferable that the length of the inner end surface of the two members 40 be shorter than the length of the major and minor axes. The clearance L is formed in the vicinity of the outer periphery between the opposing end surfaces of the first member 20 or between the vicinity of the outer periphery of the end surface of the first member 20 and the vicinity of the outermost periphery of the end surface of the second member 40.

  Although the material and material of the spacer 30 are not particularly limited, for example, PE (polyethylene) resin which is light in weight and softer than polypropylene is used.

  FIG. 5 is a view regarding an example of the second member 40. As shown in FIG. Specifically, FIG. 5A is a front view of the second member 40. FIG. FIG. 5B is a side view of the second member 40 as viewed from the front right side. FIG.5 (c) is the top view which looked at the 2nd member 40 from the upper side. FIG. 5D is a side view of the second member 40 as viewed from the front left side. As illustrated, the second member 40 has a substantially elliptical hemispherical shape, and on the inner end surface adjacent to the spacer 30, a concave portion 70 having a substantially elliptical shape at or near the center of the outermost periphery. Is formed. The concave portion 70 is narrower than the inside of the second member 40 in the vicinity of the entrance on the inner end surface because the concave portion 70 is a substantially elliptical sphere. Due to such a shape of the recess 70, when the convex portion 12 of the middle shaft portion 10 is fitted into the recess 70, the second member 40 is difficult to remove from the middle shaft portion 10.

  The dimensions of the second member 40 are about 10 cm at the inner end face and about 8 cm at the short axis. In addition, the perpendicular length from the apex P of the paraboloid of the elliptical hemisphere to the inner end surface is about 5 cm. In addition, the substantially elliptical spherical recess 70 has a major axis of about 3.5 cm and a minor axis of about 2.5 cm at the entrance on the inner end face. In addition, the lengths of the major and minor axes of the recess 70 are about 6 cm and about 4 cm, respectively. In addition, these dimensions are an example, Comprising: It does not specifically limit.

  Although the material and material of the second member 40 are not particularly limited, like the first member 20, those having elasticity, flexibility, and light weight are preferable. For example, an EVA (Ethylene Vinyl Acetate Copolymer) resin or the like is used as the material of the second member 40.

  Further, in order to enhance the stretching effect, a material having a relatively high hardness and a low flexibility may be used as the material of the second member 40 as in the first member 20. As a material and material of the second member 40 in this case, for example, foamed polyethylene of an olefin resin is used.

  FIG. 6 is a view showing an example of the center shaft portion 10. Specifically, FIG. 6A is a front view of the middle shaft portion 10. FIG.6 (b) is an end elevation of the AA cutting part shown to Fig.6 (a). FIG. 6C is a plan view of the middle shaft portion 10 as viewed from the upper side. FIG. 6D is a side view of the convex portion 12 of the middle shaft portion 10 as viewed from the front right direction. As illustrated, the center shaft portion 10 has a core portion 11 of an elliptic cylinder whose outer periphery is a substantially elliptical shape, and a substantially elliptical spherical convex portion 12 located at both ends of the core portion 11.

  As for the dimensions of the central shaft portion 10, the major axis of the outer peripheral ellipse of the core portion 11 is about 4 cm, the minor axis is about 3 cm, and the axial length is about 32.5 cm. In addition, the convex portion 12 has a major axis of about 6.5 cm and a minor axis of about 4.5 cm. Moreover, the perpendicular distance from the end point Q of the axial direction of the convex part 12 to the end of the core part 11 is about 6 cm. In addition, these dimensions are an example, Comprising: It does not specifically limit.

  The material, material, and the like of the central shaft portion 10 are not particularly limited, but it is preferable to use a material that is resistant to such deformation because tensile stress and tear stress are generated due to bending during use. For example, an EVA (Ethylene Vinyl Acetate Copolymer) resin or the like is used as the material of the central shaft portion 10.

  Such a health device 100 includes the directions of the major and minor axes in the substantially elliptical hollow portions 50 and 60 of the first member 20 and the spacer 30, and the major and minor axes in the substantially elliptical core portion 11 of the middle shaft portion 10. The core portion 11 is inserted into the hollow portions 50 and 60 such that the direction of the core portion 11 matches the direction of the core portion 11. In addition, the first member 20 and the spacer 30 are sandwiched and fixed between the pair of second members 40 by fitting the convex portion 12 into the concave portion 70 of the second member 40.

  Next, an example of use of the health device 100 will be described. FIG. 7 is a view showing an example in which the health appliance 100 is used while sitting on a chair. Specifically, FIG. 7A shows the case of using the health device 100 in the vertical direction, and shows the state of the health device 100 in a posture in which the user does not lean too much against the backrest. FIG. 7 (b) shows the case where the health device 100 is used vertically, and shows the state of the health device 100 in a posture in which the user puts weight on the backrest and leans. FIG. 7C shows the case where the health device 100 is used sideways, and shows the state of the health device 100 in a posture in which the user puts weight on the backrest and leans.

  As shown in FIGS. 7 (a) and 7 (b), one of the usage forms of the health device 100 is the axial direction of the health device 100 between the back of the user and the back of the chair and the spine of the user. Use vertically to fit along the neighborhood. Also, as shown in FIG. 7 (c), one of the other usage forms of the health device 100 lays the axial direction of the health device 100 in a direction perpendicular to the spine of the user, Use so that your back or waist can be pressed against. As described above, although the first member 20 in contact with the back of the user is an elliptic cylinder, it is used whether the major axis direction and the minor axis direction are perpendicular or parallel to the back of the user The user may decide as appropriate according to the preference and body shape of the person.

  The health device 100 is near the outer periphery between the opposing end faces of the adjacent first members 20 by the function of the spacer 30, and the outermost periphery of the end face of the second member 40 facing the vicinity of the outer periphery of the end face of the first member 20. A gap L is formed between the vicinity. Therefore, even in the posture of the user as shown in FIG. 7 (b), since the health device 100 bends according to the user's body shape, posture, shape of the chair, etc., it is possible to increase the stretching effect. .

  FIG. 8 is a view showing an example of the health appliance 100 in a bent state. For example, in the health device 100 in a non-bent state (for example, the health device 100 shown in FIG. 1), both end surfaces of the first member 20 are in contact with the entire end surface of the spacer 30. On the other hand, as shown in FIG. 8, in the bent state health appliance 100, the contact position with the adjacent spacer 30 moves from the axial center toward the outer peripheral direction at the end face of the first member 20.

  As described above, the health device 100 has the spacer 30 interposed between the first members 20 or between the first member 20 and the second member 40, and between the opposing end faces of the adjacent first members 20. Forming a gap L between the vicinity of the outer periphery of the first member 20 and the vicinity of the outer periphery of the end face of the first member 20 and the vicinity of the outermost periphery of the inner end face of the second member 40 effective.

  Further, the health device 100 includes the directions of the major and minor axes in the substantially elliptical hollow portions 50 and 60 of the first member 20 and the spacer 30, and the major and minor axes in the substantially elliptical core portion 11 of the middle shaft portion 10. The core portion 11 is inserted into the hollow portions 50 and 60 so that the directions coincide with each other. Thereby, the health device 100 is more flexible and bendable in a specific direction.

  In addition, since the first member 20 and the second member 40 are formed of a material and material that is relatively soft and has a large friction, the contact surfaces do not slip easily, and it is difficult to bend as they are. Therefore, the health device 100 is made of a material / material spacer 30 which is relatively hard and has a small friction as compared to these materials / materials, and is sandwiched between the first member 20 and between the first member 20 and the second member 40. It is. Thereby, the health device 100 can reduce friction between the first members 20 or between the first member 20 and the second member 40, and is more easily bent.

  The structure of such a health device 100 is reclining such that the backrest falls when the backrest is loaded, the angle between the seat and the backrest opens, and the backrest returns to its original position when the loading is stopped. This is particularly effective when there is unevenness in the chair or backrest that has a function.

  Moreover, the 2nd member 40 in which the front-end | tip is rounded in parabolic shape is attached to the both ends of the health instrument 100. As shown in FIG. Further, since the second member 40 is formed of a soft material or material having a cushioning property, like the first member 20, it does not hurt even if it collides with the body, and safety in use can be secured.

  In addition, since the first member 20 and the second member 40 have a substantially elliptical outer periphery, if it is desired to stretch a narrow area along the spine in a focused manner, a wide area along the spine is emphasized By changing the direction of pressing on the body when stretching is desired, it is possible to provide a stretching effect according to the user's preference.

  Further, as shown in FIG. 8, when the health device 100 is bent, the gap L on the opposite side (the extending side) to the side where the first member 20 or the second member 40 and the spacer 30 contact is increased. When the edge portion in the vicinity of the outer periphery of the end face of the first member 20 exposed to the gap is pressed against the body for use, there is also an effect of stimulating the pressure point of the body to feel comfortable.

  Further, since the health device 100 has a substantially elliptical outer periphery, there is an advantage that it does not easily roll even when it is used by being put on the back of a chair or placed on a surface such as a floor.

Second Embodiment
FIG. 9 is a view regarding a health device 200 according to the second embodiment. Specifically, FIG. 9 (a) is a front view of the health device 200. FIG. FIG. 9B is a side view of the health device 200 as viewed from the front right side. FIG. 9C is a plan view of the health device 200 viewed from the upper side. FIG. 10 is a cross-sectional view of the health device 200 in a plane passing through the axial center O.

  As shown in these figures, the health device 200 according to the present embodiment includes the center shaft portion 210, the plurality of first members 20, the plurality of spacers 30, and the pair similarly to the health device 100 of the first embodiment. And the second member 240 of FIG. The hollow portions 50 and 60 are provided in the region including the center of the outer peripheral ellipse in the first member 20 and the spacer 30 having a substantially elliptical shape with a predetermined thickness, and the center shaft portion 210 is inserted into the hollow portions 50 and 60. The second member 240 is bonded and fixed to both ends of the center shaft portion 210.

  In such a health device 200, a gap L is formed in the vicinity of the outer periphery between the adjacent first members 20 by the function of the spacer 30, as in the health device 100 of the first embodiment. As a result, the health device 200 can be easily bent (bent) in the direction in which both ends are brought close to each other, and the bending can be improved. In addition, the health device 200 having such characteristics can be fitted to a chair of any shape relatively, and can obtain an effect of increasing the stretching effect.

  The number of the first members 20 and the spacers 30 is not limited, as long as the number of the first members 20 and the number of the spacers 30 are optimal.

  The health device 200 according to the present embodiment is different from the health device 100 according to the first embodiment in a part of the structure such as the shapes of the middle shaft portion 210 and the second member 240 and the position where the spacer 30 is inserted. The shape and the like of the spacer 30 are the same as those of the health device 100 of the first embodiment. Therefore, below, it explains focusing on a different part from health equipment 100 of a first embodiment, about the same composition, the same numerals are attached and detailed explanation is omitted.

  FIG. 11 is a diagram regarding an example of the center shaft portion 210. As shown in FIG. Specifically, FIG. 11A is a front view of the middle shaft portion 210. FIG. FIG. 11 (b) is a side view of the center shaft portion 210 as viewed from the front right side. FIG. 11C is a plan view of the middle shaft portion 210 as viewed from the upper side. As illustrated, the central shaft portion 210 of the health device 200 according to the present embodiment is configured of only the core portion 211. Specifically, the center shaft portion 210 (core portion 211) is an elliptic cylinder whose outer periphery is substantially elliptical.

  As for the dimensions of the central shaft portion 210, the major axis of the outer peripheral ellipse of the core portion 211 is about 4 cm, the minor axis is about 3 cm, and the axial length is about 32.5 cm. However, these dimensions are only an example and are not particularly limited.

  In addition, since the raw material and material of the axial part 10 are the same as that of above-mentioned 1st embodiment, description is abbreviate | omitted.

  FIG. 12 is a view regarding an example of the second member 240. As shown in FIG. Specifically, FIG. 12 (a) is a front view of the second member 240. FIG. FIG. 12B is a side view of the second member 240 as viewed from the front right side. FIG.12 (c) is the top view which looked at the 2nd member 240 from the upper side. FIG.12 (d) is the side view which looked at the 2nd member 240 from the front left side. As illustrated, the second member 240 according to the present embodiment is a thin elliptic cylinder having a substantially elliptical outer periphery and a thin thickness, and the outer surface on the opposite side to the inner end face in contact with the center shaft portion 210 is slightly rounded. It has a stern shape.

  The dimensions of the second member 240 are about 7.5 cm in the major axis and about 5.5 cm in the minor axis at the inner end surface. The perpendicular length from the apex R of the outer surface to the inner end surface is about 0.5 cm. In addition, these dimensions are an example, Comprising: It does not specifically limit.

  Although the material and material of the second member 240 are not particularly limited, for example, PE (polyethylene) resin which is lightweight and softer than polypropylene is used.

  In the health device 200 according to the second embodiment, as described above, the center shaft portion 210 is inserted into the hollow portions 50 and 60 of the spacer 30 disposed between the first member 20 and the first member 20 and fixed. Both ends are adhesively fixed to the second member 240 using an agent or the like. Thus, the first member 20 and the spacer 30 are sandwiched and fixed between the pair of second members 240.

  In addition, about the usage method of the health appliance 200 which concerns on this embodiment, since it is the same as that of the above-mentioned, detailed description is abbreviate | omitted.

  As described above, in the health tool 200, the spacer 30 is interposed between the first members 20, and the gap L is formed in the vicinity of the outer periphery between the first members 20, thereby facilitating bending and improving bending. effective.

  In addition, since both ends of the health device 200 fix and fix the second member 240 to both ends of the middle shaft portion 210, it is not necessary to form the substantially oval spherical recess 70 in the inner end face of the second member 240. Can be simplified.

  In the embodiment described above, the method of using the health appliance 100 on a chair is described as an example, but the method of using the health appliance 100 is not limited to this, and for example, the health appliance 100 may be used on a floor Alternatively, the edge of the first member may be pressed against the body.

  Moreover, although the above-mentioned embodiment demonstrated the outer peripheral shape of the 1st member 20 and the spacer 30 of a substantially ellipse, this invention is not limited to this. The outer peripheral shapes of the first member 20 and the spacer 30 may be substantially circular.

  Moreover, although the above-mentioned embodiment demonstrated the elliptical hemispherical 2nd member 40, the 2nd member 40 may be substantially hemispherical.

  Further, the outer peripheral shape of the core portion 11 may be substantially circular.

  In addition, the outer peripheral shape of the second member 240 may be substantially circular.

  The present invention is not limited to the embodiments described above, but includes various modifications. For example, the embodiments described above are described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the configurations described. Also, part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. In addition, it is possible to add, delete, and replace other configurations for part of the configurations of the respective embodiments.

100 (200) ... health equipment, 10 (210) ... middle shaft portion, 11 (211) ... core portion, 12 ... convex portion, 20 ... first member, 30 ... spacer , 40: second member, L: gap, 50, 60: hollow portion, 70: recess portion

Claims (10)

With a cylindrical central shaft,
A plurality of first members which are cylindrical and provided with hollow portions which are through holes between end faces;
And a plurality of spacers, each of which is a cylindrical outer periphery smaller than the outer periphery of the first member and provided with a hollow portion which is a through hole between end surfaces;
The spacer is disposed between the first members,
The health device, wherein the central shaft portion is inserted into the hollow portion of the first member and the spacer. The health device according to claim 1, wherein
It further has a substantially circular hemispherical second member,
The spacer is further disposed between the first member and the second member,
The health device characterized in that the second member is attached to both ends of the center shaft portion inserted into the hollow portion. The health device according to claim 2, wherein
The central shaft portion has convex portions at both ends,
The second member has a recess at an inner end surface which is a contact surface with the adjacent spacer,
The second member is attached to both ends of the center shaft portion by fitting the convex portion and the concave portion to each other. The health device according to claim 1, wherein
It further has a cylindrical second member,
The health device characterized in that the second member is attached to both ends of the center shaft portion inserted into the hollow portion. The health device according to claim 1, wherein
The health device according to claim 1, wherein the first member, the spacer, and the central shaft portion have an outer peripheral shape that is a substantially elliptic elliptical cylinder. The health device according to claim 2, wherein
The health device according to claim 1, wherein the second member is elliptical hemispherical. The health device according to claim 4, wherein
The health device according to claim 1, wherein the second member has an outer peripheral shape that is a substantially elliptic elliptical cylinder. The health device according to claim 5, wherein
The health device according to claim 1, wherein the first member, the spacer, and the central shaft portion have the same longitudinal direction. The health device according to claim 2, wherein
The health device is characterized in that the spacer is formed of a material having a small friction and a hardness, as compared with the material of the central shaft portion, the first member, and the second member. The health device according to any one of claims 1 to 9,
The central shaft portion is
What is claimed is: 1. A health device characterized in that it is formed using a material that has flexibility to be deformed in response to tensile stress and tear stress of bending that occurs when using the health device.

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