JP2024082671A - Magnetic Therapy Device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a magnetic therapy device capable of applying a high strength magnetic field over a wide area.

SOLUTION: A magnetic therapy device M is attached to a skin of a human body and used. The magnetic therapy device M includes a magnet 1, and a sheet 2 for supporting the magnet 1 and attaching it to the skin. The magnet 1 has a first shape extending along a first direction D1, and the sheet 2 has a second shape extending along a second direction D2. The second shape is larger than the first shape, and the second direction D2 approximately agrees with the first direction D1.

SELECTED DRAWING: Figure 2A

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to a magnetic therapy device.

Conventionally, magnetic therapy devices equipped with magnets have been used to improve blood circulation in the human body and relieve symptoms such as stiff shoulders and lower back pain. One type of magnetic therapy device is one in which a magnet is attached to the skin of the human body by means of a patch sheet, as disclosed in Patent Document 1, for example. This type of magnetic therapy device can be easily attached to the skin by means of a patch sheet, making it easy to perform magnetic therapy on affected areas of the human body.

JP 2000-202036 A

The magnetic therapy device of Patent Document 1 uses granular magnets, so the range of the magnetic field generated by the magnets tends to be narrow, and the strength of the magnetic field tends to be low. Therefore, even if only one magnetic therapy device is attached to the skin, it is difficult to feel the high magnetic therapeutic effect of the magnetic therapy device, so multiple magnetic therapy devices are often attached to the skin. However, in this case, it is necessary to attach another magnetic therapy device to the skin while avoiding the attachment area (application area) of the magnetic therapy device already attached to the skin. This results in a low attachment density of the magnetic therapy devices, and a low density of magnets positioned on the surface of the skin, which results in a low magnetic field strength that extends inside the human body. In addition, it is time-consuming to attach multiple magnetic therapy devices to the skin.

The present invention was developed in consideration of the above problems, and aims to provide a magnetic therapy device that can apply a high-intensity magnetic field over a wide area.

The magnetic therapy device according to one embodiment of the present invention is a magnetic therapy device that is attached to the skin of a human body for use, and the magnetic therapy device includes a magnet and a sheet that supports the magnet and is attached to the skin, the magnet has a first shape that extends along a first direction, the sheet has a second shape that extends along a second direction, and in a plan view, the second shape is larger than the first shape, and the second direction is approximately the same as the first direction.

According to one embodiment of the present invention, it is possible to provide a magnetic therapy device capable of applying a high-intensity magnetic field over a wide area.

FIG. 1 is a schematic perspective view showing an example of use of a magnetic therapy device according to the present embodiment. FIG. 2 is a top view showing the magnetic therapy device according to the present embodiment. FIG. 2 is a side view showing the magnetic therapy device according to the present embodiment. This is a cross-sectional view taken along line IIC-IIC in FIG. 2A. 1 is a perspective view showing a magnet used in a magnetic therapy device according to an embodiment of the present invention, viewed from below. 1 is a perspective view, seen from above, showing a magnet used in a magnetic therapy device according to an embodiment of the present invention. 1 is a cross-sectional view showing a magnet used in a magnetic therapy device according to an embodiment of the present invention. 2 is a cross-sectional view showing the surface shape of a magnet used in the magnetic therapy device according to the present embodiment. FIG.

Below, a magnetic therapy device according to one embodiment of the present invention will be described with reference to the drawings. However, the following embodiment is merely an example, and the present invention is not limited to the following embodiment.

Figures 1 to 2C show the magnetic therapy device M according to this embodiment. As shown in Figure 1, the magnetic therapy device M is attached to the skin S of a human body B when used. When the magnetic therapy device M is attached to the skin S of the human body B when used, it exerts a magnetic field inside the human body B, and brings about magnetic therapy effects such as promoting blood circulation in the part of the human body B to which it is attached and the surrounding area, and improving metabolism. In the example of Figure 1, the magnetic therapy device M is attached to the shoulder of the human body B to relieve stiff shoulders. However, the part of the human body B to which the magnetic therapy device M is attached is not particularly limited as long as it is a position where a magnetic therapy effect is exerted on the affected part of the human body B. Examples of other parts of the human body B to which the magnetic therapy device M is attached include the arms, neck, waist, legs, etc. of the human body B.

As shown in Figs. 2A to 2C, the magnetic therapy device M comprises a magnet 1 and a sheet 2 that supports the magnet 1 and is attached to the skin S (see Fig. 1). In the example of Figs. 2A to 2C, one surface of the sheet 2 is adhesive, and the magnetic therapy device M is provided to the user in a state in which it is attached by the adhesive force of the sheet 2 to release paper (or release film) R, the surface of which has been subjected to a release treatment. However, the magnetic therapy device M is not limited to the example of Figs. 2A to 2C, and the sheet 2 may be provided to the user without adhesive force, and the magnetic therapy device M may be attached to the skin S by an adhesive sheet that is provided separately.

The magnet 1 has two magnetic poles (N pole, S pole) and generates magnetic lines of force that can exert a magnetic therapeutic effect on the human body B (see FIG. 1). In this embodiment, the magnet 1 has a magnetic pole direction that extends approximately perpendicular to the surface of the sheet 2 (specifically, one surface 2a of the sheet 2 described later; see FIG. 2B and FIG. 2C). The magnet 1 has a magnetic pole direction that extends approximately perpendicular to the surface of the sheet 2, so that when the magnetic therapy device M is attached to the skin S of the human body B and used (see FIG. 1), the magnet 1 is positioned so that the magnetic pole direction faces approximately perpendicular to the skin S. In this way, the magnetic pole direction of the magnet 1 extends approximately perpendicular to the surface of the skin S, and compared to the case where the magnetic pole direction extends parallel to the surface of the skin S, the strength of the magnetic field in the direction approximately perpendicular to the surface of the skin S is increased, and the magnetism can be applied from the surface of the skin S to deeper inside the body. However, the magnet 1 only needs to be able to generate magnetic lines of force that can exert a magnetic therapeutic effect on the human body B, and the magnetic pole direction is not particularly limited.

The magnet 1 has a first shape (longitudinal shape) that extends along a first direction (longitudinal direction) D1. The long shape of the magnet 1 allows the magnetic field generated by the magnet 1 to be applied over a wide area. The size of the magnet 1 is not particularly limited, but for example, the length in the first direction D1 is 20 mm to 50 mm, and the cross section perpendicular to the first direction D1 is formed to a size of 1 mm to 5 mm x 1 mm to 5 mm. When the magnet 1 is incorporated into the magnetic therapy device M and used, it can be given a predetermined surface shape, as described in detail below, so that it is gentle on the skin S of the human body B and is less likely to cause damage to the magnet 1. The detailed surface shape of the magnet 1 will be described later.

The material of the magnet 1 is not particularly limited as long as it can generate magnetic lines of force that can have a magnetic therapeutic effect on the human body B (see FIG. 1). In this embodiment, the magnet 1 is a so-called bonded magnet in which magnetic powder is mixed with a resin base material. Specifically, the magnet 1 is a bonded magnet in which ethylene resin is mixed with powdered ferrite magnet. By making the magnet 1 a bonded magnet, the magnet 1 can have flexibility to deform appropriately so as to follow the movement of the surface of the skin S (see FIG. 1) of the human body B. When the magnet 1 is a bonded magnet, examples of base materials other than ethylene resin include elastic resins such as silicone resins and urethane resins, and examples of magnetic powders other than ferrite magnets include neodymium magnets and samarium-cobalt magnets. The magnet 1 may be a sintered magnet in which magnetic powders such as ferrite magnets, neodymium magnets, and samarium-cobalt magnets are sintered.

The sheet 2 is used to protect the magnet 1 and to attach the magnet 1 to the skin S (see FIG. 1) of the target part of the human body B. The sheet 2 has a second shape (longitudinal shape) extending along the second direction (longitudinal direction) D2 as a whole. The second shape of the sheet 2 is larger than the first shape of the magnet 1, and the second direction D2 is approximately the same as the first direction D1. By approximately matching the longitudinal direction of the sheet 2 with the longitudinal direction of the magnet 1, the sheet 2 has a shape that is one size larger along the magnet 1. This allows the magnetic therapy device M to be produced with a minimum size that can protect the magnet 1 with the sheet 2 while ensuring the attachment area of the sheet 2 to the skin S. The size of the sheet 2 depends on the size of the magnet 1, but is formed to have a length of 30 mm to 60 mm in the second direction (longitudinal direction) D2, a length of 10 mm to 30 mm in the direction perpendicular to the second direction D2 (short direction), and a thickness of 0.1 mm to 1.0 mm (excluding the magnet 1). The sheet 2 has one side 2a and another side 2b opposite to the first side 2a (see Figures 2B and 2C). When the magnetic therapy device M is attached to the skin S, the first side 2a can be the side facing the skin S, and the other side 2b can be the side facing away from the skin S.

As shown in FIG. 2A, the sheet 2 may have a first notch 2m at least at one end and the other end in the second direction D2. When the sheet 2 has the first notch 2m, the tension of the sheet 2 is relaxed by the first notch 2m when the magnetic therapy device M is attached to the skin S and used, so that the magnet 1 is prevented from being excessively pressed against the skin S by the tension of the sheet 2 at at least one end and the other end of the magnet 1. In addition, since the magnet 1 has an elongated shape extending along the first direction (longitudinal direction) D1, even if the restoring force when the magnet 1 is deformed is easily received near the end of the sheet 2 in the second direction (longitudinal direction) D2, the stress is easily relaxed by the first notch 2m. Therefore, damage to the sheet 2 due to the stress received from the magnet 1 is suppressed. Furthermore, since the magnet 1 is less likely to be pressed excessively against the skin S, as described in detail below, it becomes easier to ensure a gap between the one-surface groove 11a (see Figures 3A to 3C) formed on one surface 1a of the magnet 1 and the skin S (see Figure 1), making it easier to expel sweat generated by the human body B from the one-surface groove 11a.
The position of the first cutout 2m is not particularly limited as long as it is an end of the second direction D2, but in this embodiment, the first cutout 2m is formed on an extension of the first direction (longitudinal direction) D1 of the magnet 1. The shape of the first cutout 2m is not particularly limited, but in this embodiment, the first cutout 2m is formed to be cut out in a substantially semicircular shape. The size of the first cutout 2m depends on the size of the sheet 2 and the shape of the first cutout 2m, but is formed to have a width (length in a direction perpendicular to the second direction D2) of 1 mm to 10 mm and a depth (length in the second direction D2) of 1 mm to 10 mm. The first cutout 2m may have other shapes, such as a substantially V-shaped or substantially linear cutout. In the illustrated example, the sheet 2 has the first cutout 2m at both one end and the other end of the second direction D2. In this case, the tension in the sheet 2 is further relaxed, thereby further preventing excessive pressing of the magnet 1 against the skin S and damage to the sheet 2, and making it easier to maintain a gap between the one-side groove 11a and the skin S.

As shown in FIG. 2A, the sheet 2 may have a second notch 2n at at least one end and the other end in a direction intersecting the second direction D2 (in the illustrated example, a direction (short direction) substantially perpendicular to the second direction D2). By having the second notch 2n in the sheet 2, the sheet 2 is easily twisted around the axis of the second direction D2, so that the sheet 2 cannot follow the movement of the skin S (see FIG. 1) and peels off from the skin S, thereby preventing the magnetic therapy device M from unintentionally detaching from the skin S. The position of the second notch 2n is not particularly limited as long as it is an end in a direction intersecting the second direction D2, but in this embodiment, the second notch 2n is formed in the approximate center of the sheet 2 in the second direction D2, at an end of the sheet 2 perpendicular to the second direction D2. The shape of the second cutout 2n is not particularly limited as long as the shape makes the sheet 2 easily twisted, but in this embodiment, the second cutout 2n is formed to be recessed in an approximately V-shape. The size of the second cutout 2n depends on the size of the sheet 2 and the shape of the second cutout 2n, but for example, the width (length in the second direction D2) is 1 mm to 40 mm, and the depth (length in the direction perpendicular to the second direction D2) is 5 mm to 10 mm. The second cutout 2n may have other shapes, such as a recessed shape that is approximately semicircular or approximately linear. In the illustrated example, the sheet 2 has the second cutout 2n at both one end and the other end in the second direction D2. In this case, the sheet 2 becomes even more easily twisted, so that the sheet 2 cannot follow the movement of the skin S, and the magnetic therapy device M is further prevented from unintentionally detaching from the skin S.

When the sheet 2 has both the first cutout 2m and the second cutout 2n, it is preferable that the width of the second cutout 2n is wider than the width of the first cutout 2m and the depth of the second cutout 2n is deeper than the depth of the first cutout 2m. This makes it possible to make the sheet 2 easier to twist while ensuring the attachment area of the sheet 2 to the skin S.

The configuration of the sheet 2 is not particularly limited as long as it can protect the magnet 1 and attach the magnetic therapy device M to the skin S (see FIG. 1). In this embodiment, as shown in FIG. 2C, the sheet 2 includes a first sheet 21 provided on the other surface 2b, a second sheet 22 provided on the one surface 2a, and a third sheet 23 provided between the first sheet 21 and the second sheet 22, and the magnet 1 is supported between the second sheet 22 and the third sheet 23. In the illustrated example, the first sheet 21 is the base material of the sheet 2, forms the other surface 2b, and protects the magnet 1 on the other surface 2b side. In the illustrated example, the second sheet 22 is a member that attaches the magnetic therapy device M to the skin S, forms an adhesive surface 2a, and protects the magnet 1 on the one surface 2a side. In this way, the magnetic therapy device M can be detachably attached to the desired position of the skin S by the adhesive force of the one surface 2a. In the illustrated example, the third sheet 23 is a member that assists in attaching the magnet 1 to the first sheet 21, and has adhesive properties on both the side of the first surface 2a and the side of the other surface 2b. In this way, the third sheet 23 is attached to the second sheet 22 with the magnet 1 supported by the adhesive force of the side of the first surface 2a, and is attached to the first sheet 21 by the adhesive force of the side of the other surface 2b.

The configuration and materials of the first to third sheets 21 to 23 are not particularly limited as long as they can perform these functions. The first to third sheets 21 to 23 are nonwoven fabrics made of polyurethane fibers, polyethylene fibers, polyester fibers, etc., or films made of urethane resins, ethylene resins, ester resins, etc., and sheets with acrylic adhesives applied to one or both sides of the film as necessary are exemplified. The first to third sheets 21 to 23 can be made of breathable sheets, for example, to prevent the skin S (see Figure 1) from becoming stuffy. In particular, when the second sheet 22 is a breathable sheet (for example, a mesh sheet), sweat between the magnet 1 and the skin S can be easily discharged to the outside of the magnetic therapy device M through the second sheet 22.

The sheet 2 may be composed of the first and second sheets 21 and 22 without the third sheet 23, and the magnet 1 may be supported between the first sheet 21 and the second sheet 22. In this case, for example, both the surface on the side of the first surface 2a (the first surface 2a) and the surface on the side of the other surface 2b of the second sheet 22 have adhesive properties, and the magnetic therapy device M is detachably attached to the desired position of the skin S by the adhesive force of the surface on the side of the first surface 2a, and the magnet 1 is supported by the adhesive force of the surface on the side of the other surface 2b, and is attached to the first sheet 21. The sheet 2 may be composed of only the first sheet 21 without the second and third sheets 22 and 23, and the magnet 1 may be supported by only the first sheet 21. In this case, for example, the surface on the side of the first surface 2a (the first surface 2a) of the first sheet 21 has adhesive properties, and the magnetic therapy device M is detachably attached to the desired position of the skin S by the adhesive force of the surface on the side of the first surface 2a. Sheet 2 may be composed of four or more sheet-like members (first to Nth sheets (N≧4)).

In this embodiment, the first and second sheets 21 and 22 have a planar shape that is approximately the same as the second shape of the sheet 2 (see the area surrounded by the solid line in FIG. 2A). In this embodiment, the third sheet 23 has a planar shape in which the second shape is removed at one end side and the other end side in the second direction D2 so that the length in the second direction D2 is approximately the same as the length in the first direction D1 of the magnet 1 (see the area surrounded by the dotted line and the solid line in FIG. 2A). However, the planar shapes of the first to third sheets 21 to 23 are not limited to the example in FIG. 2A as long as the planar shape of any of the first to third sheets 21 to 23 is formed to the second shape of the sheet 2. All of the planar shapes of the first to third sheets 21 to 23 may be approximately the same as each other, or none of the planar shapes of the first to third sheets 21 to 23 may be the same as each other.

Note that the sheet 2 does not necessarily have to be attached to the skin S (see FIG. 1) over the entire surface 2a as long as the magnetic therapy device M can be positioned at the desired location of the human body B (see FIG. 1). For example, the sheet 2 may be attached to the skin S only at the outer edge of the surface 2a by having adhesiveness only at the outer edge. As described above, when the sheet 2 does not include the second and third sheets 22 and 23, the magnet 1 comes into direct contact with the skin S, and the sheet 2 is attached to the skin S only around the magnet 1 by the adhesive force of the first sheet 21. Even when the entire surface 2a of the sheet 2 is adhesive, the sheet 2 may be attached to the skin S with the first cutout 2m and the second cutout 2n slightly spaced from the skin S in order to relieve the tension of the sheet 2 or to make the sheet 2 easier to twist.

Next, the surface shape of magnet 1 will be described with reference to Figures 3A to 3D. However, the following description is merely an example, and the present invention is not limited to the following description.

As shown in Figures 3A to 3C, the magnet 1 has one surface 1a and another surface 1b opposite to the first surface 1a. When the magnetic therapy device M is attached to the skin S (see Figure 1), the first surface 1a faces the skin S, and the other surface 1b faces the opposite side to the skin S.

In this embodiment, as shown in Figures 3A and 3C, one surface 1a of the magnet 1 has a one-surface groove 11a provided along the first direction D1 (hereinafter, the "width of the one-surface groove 11a" refers to the width of the one-surface groove 11a in a cross section perpendicular to the first direction D1, and the "depth of the one-surface groove 11a" refers to the depth of the one-surface groove 11a in a cross section perpendicular to the first direction D1). Since the one surface 1a of the magnet 1 has the one-surface groove 11a, when the magnetic therapy device M is attached to the skin S (see Figure 1) and used, a gap is formed between the one-surface groove 11a and the skin S along the first direction D1, so that when the user sweats, the sweat is easily discharged to the outside of the magnetic therapy device M along the gap. Therefore, the skin S is less likely to become stuffy due to sweat, making it easier for the user to use the magnetic therapy device M comfortably. The size of the one-side groove 11a depends on the size of the magnet 1, and is formed to have a width of 0.5 mm to 1.5 mm and a depth of 0.1 mm to 0.5 mm in a cross section perpendicular to the first direction D1, for example. In the illustrated example, the one-side groove 11a is provided over the entire length of the one surface 1a in the first direction D1. In this case, even if the magnetic therapy device M is used so that the magnet 1 is in close contact with the skin S over the entire length of the one surface 1a, sweat is easily discharged to the outside of the magnetic therapy device M along the gap. In the illustrated example, a plurality of one-side grooves 11a are provided on the one surface 1a (two one-side grooves 11a (first and second one-side grooves 111a, 112a) are provided in FIGS. 3A to 3C). In this case, the gap formed between the one-side groove 11a and the skin S increases the number of routes for sweat to be discharged to the outside of the magnetic therapy device M, making it even more difficult for the skin S to become stuffy due to sweat, making it easier for the user to use the magnetic therapy device M more comfortably. Note that only one one-side groove 11a may be provided, or three or more (first to Nth one-side grooves (N≧3)) may be provided.

In this embodiment, the other surface 1b of the magnet 1 has a other surface groove 11b arranged along the first direction D1 as shown in Figures 3B and 3C (hereinafter, the "width of the other surface groove 11b" refers to the width of the other surface groove 11b in a cross section perpendicular to the first direction D1, and the "depth of the other surface groove 11b" refers to the depth of the other surface groove 11b in a cross section perpendicular to the first direction D1). In this case, when the magnetic therapy device M is used, when an unintended external force is applied to the outer surface of the magnetic therapy device M (the other surface 2b of the sheet 2), the width of the other surface groove 11b expands or contracts, causing the other surface groove 11b to deform, making it easier for the other surface 1b to absorb the external force. Therefore, the skin S (see Figure 1) is less likely to be affected by the external force, and the skin S is prevented from being damaged by the external force to the magnetic therapy device M. The size of the other side groove 11b depends on the size of the magnet 1, and is formed to have a width of 0.5 mm to 1.5 mm and a depth of 0.1 mm to 0.5 mm in a cross section perpendicular to the first direction D1. In the illustrated example, the other side groove 11b is provided over the entire length of the other side 1b in the first direction D1. In this case, when an external force is applied to the magnetic therapy device M, the width of the other side groove 11b expands and contracts over the entire length of the other side 1b, and the other side groove 11b is deformed, making it easier for the other side 1b to absorb the external force. Therefore, the external force is more unlikely to reach the skin S (see FIG. 1), and the skin S is further prevented from being damaged by the external force to the magnetic therapy device M. In the illustrated example, multiple other-side grooves 11b are provided on the other surface 1b (two other-side grooves 11b (first and second other-side grooves 111b, 112b) are provided in Figs. 3A to 3C). In this case, when an external force is applied to the magnetic therapy device M, the width of each of the other-side grooves 11b expands and contracts, and each of the other-side grooves 11b deforms, making it easier for the other surface 1b to absorb the external force. Therefore, it becomes even more difficult for the external force to reach the skin S (see Fig. 1), and damage to the skin S due to the external force applied to the magnetic therapy device M is further suppressed. Note that only one other-side groove 11b may be provided, or three or more other other-side grooves (first to Nth other-side grooves (N≧3)) may be provided.

When the magnet 1 has both the one-side groove 11a and the other-side groove 11b, as shown in Figures 3C and 3D (see Figure 3C for each part of the magnet 1, and see Figure 3D for the dimensions of the magnet 1), it is preferable that the depth Hb of the other-side groove 11b is deeper than the depth Ha of the one-side groove 11a, and the width Hb of the other-side groove 11b is wider than the width Wa of the one-side groove 11a (see Figure 3D). In this case, the one-side groove 11a can be formed narrower and shallower than the other-side groove 11b, so that when the magnetic therapy device M is attached to the skin S (see Figure 1) and used, the skin S is less likely to enter the one-side groove 11a on the one side 1a of the magnet 1 facing the skin S. Therefore, a gap along the first direction D1 is easily formed between the one-side groove 11a and the skin S, and sweat is easily discharged to the outside of the magnetic therapy device M along the gap. This makes it even more difficult for the skin S to become steamy due to sweat, making it easier for the user to use the magnetic therapy device M more comfortably. Also, since the skin S is less likely to enter the one-side groove 11a, the magnet 1 is prevented from excessively deforming and damaging the skin S by following the movement of the skin S that has entered the one-side groove 11a. Also, in this case, the other-side groove 11b can be formed wider and deeper than the one-side groove 11a, so that when an external force is applied to the magnetic therapy device M, the degree of expansion and contraction of the width of the other-side groove 11b increases, making it easier for the other side 1b to absorb the external force. Therefore, since the external force is less likely to reach the skin S (see FIG. 1), damage to the skin S due to the external force on the magnetic therapy device M is prevented. For example, the first side gutter 11a and the second side gutter 11b can be provided so that the depth Hb of the second side gutter 11b is 1.1 to 3 times deeper than the depth Ha of the first side gutter 11a, and the width Wb of the second side gutter 11b is 1.1 to 3 times wider than the width Wa of the first side gutter 11a.

In this specification, the width Wa of the one-surface groove 11a refers to the length of the line segment between the tangent point of the one-surface protrusion 12a on one side and the tangent point of the one-surface protrusion 12a on the other side when a tangent line La is drawn so as to be tangent to both of the two one-surface protrusions 12a that separate the one-surface groove 11a on both sides (see the first and second one-surface protrusions 121a, 122a that separate the first one-surface groove 111a, or the second and third one-surface protrusions 122a, 123a that separate the second one-surface groove 112a in Figure 3C) in a cross section perpendicular to the first direction D1. Similarly, the width Wb of the other-side groove 11b refers to the length of the line segment between the tangent point of the other-side protrusion 12b on one side and the tangent point of the other-side protrusion 12b on the other side when a tangent line Lb is drawn so as to be tangent to both of the two other-side protrusions 12b that separate the other-side groove 11b on both sides (see the first and second other-side protrusions 121b, 122b that separate the first other-side groove 111b, or the second and third other-side protrusions 122b, 123b that separate the second other-side groove 112b in FIG. 3C ) in a cross section perpendicular to the first direction D1. In this specification, the depth Ha of the first side groove 11a refers to the distance between the bottom position of the first side groove 11a farthest from the tangent line La in a direction perpendicular to the tangent line La when a tangent line La is drawn so as to be tangent to both of the two first side protrusions 12a that divide the first side groove 11a on both sides in a cross section perpendicular to the first direction D1, and the tangent line La. Similarly, the depth Hb of the second side groove 11b refers to the distance between the bottom position of the second side groove 11b farthest from the tangent line Lb in a direction perpendicular to the tangent line Lb when a tangent line Lb is drawn so as to be tangent to both of the two second side protrusions 12b that divide the second side groove 11b on both sides in a cross section perpendicular to the first direction D1, and the tangent line Lb.

The surface of the one-side protrusion 12a can be formed into an approximately arc shape in a cross section perpendicular to the first direction D1. By forming the one-side protrusion 12a into an approximately arc shape, when the magnetic therapy device M is attached to the skin S (see FIG. 1) and used, the stress applied to the skin S from the one-side protrusion 12a is not concentrated in one direction (for example, a direction perpendicular to the surface of the skin S) but is dispersed in multiple directions. Therefore, excessive stress is not easily applied to the skin S from the magnet 1, so that a magnet 1 that is gentle on the skin S can be obtained. The surface of the other-side protrusion 12b can also be formed into an approximately arc shape in a cross section perpendicular to the first direction D1. By forming the other-side protrusion 12b into an approximately arc shape, the stress applied to the sheet 2 from the other-side protrusion 12b is not concentrated in one direction (for example, a direction perpendicular to the other surface 2b of the sheet 2) but is dispersed in multiple directions. This makes it difficult for the magnet 1 to apply excessive stress to the sheet 2, suppressing damage to the sheet 2 due to stress from the magnet 1 to the sheet 2.

It is preferable that the curvature of the surface of the other side protrusion 12b in cross section is greater than the curvature of the surface of the one side protrusion 12a in cross section. In this case, the surface of the one side protrusion 12a is composed of a gentle curved surface compared to the surface of the other side protrusion 12b. Therefore, the stress applied to the skin S (see FIG. 1) from the one side protrusion 12a is further dispersed, and it becomes even more difficult for the magnet 1 to apply excessive stress to the skin S. In addition, in this case, since the surface of the other side protrusion 12b is composed of a sharp curved surface compared to the surface of the one side protrusion 12a, the other side protrusion 12b is formed narrower than the one side protrusion 12a, and as a result, it is more likely to have flexibility and elasticity than the one side protrusion 12a. Therefore, when an unintended external force is applied to the outer surface of the magnetic therapy device M (the other surface 2b of the sheet 2), the other surface 1b of the magnet 1 is easily deformed by the other surface protrusion 12b, and the deformation of the other surface 1b makes it easier to alleviate the external force on the magnet 1. This makes it difficult for the external force to reach the skin S, thereby preventing the skin S from being damaged by the external force on the magnetic therapy device M.

As shown in FIG. 3C, when one-side groove 11a and other-side groove 11b are formed in magnet 1, magnet 1 can be considered as a composite magnet having multiple elongated magnet parts 121-123 separated by one-side groove 11a and other-side groove 11b. In this case, in a cross section perpendicular to first direction D1, the cross-sectional shape of each magnet part 121-123 is elongated more than the cross-sectional shape of magnet 1. When the magnetic pole direction of each magnet part 121-123 is the direction extending between one surface 1a and other surface 1b, the magnetic field generated from each magnet part 121-123 becomes stronger due to the elongated cross-sectional shape. As a result, the magnetic field generated from magnet 1 becomes stronger overall, so that even if magnet 1 is small, the strength of the magnetic field extending inside human body B (see FIG. 1) is also stronger. In this embodiment, the magnet 1 includes first to third magnet parts 121 to 123 separated by the first one-side groove 111a and the first other-side groove 111b, and the second one-side groove 112a and the second other-side groove 112b. The first to third magnet parts 121 to 123 each have an elongated cross-sectional shape by including the first to third one-side ridges 121a to 123a and the first to third other-side ridges 121b to 123b, and each magnet part 121 to 123 is magnetized in a direction in which the magnetic pole direction extends between the one surface 1a and the other surface 1b. This further increases the strength of the magnetic field in a direction approximately perpendicular to the surface of the skin S, allowing the magnetism to act from the surface of the skin S to even deeper inside the body. The magnet 1 may include four or more magnet parts (first to Nth magnet parts (N≧4)).

(summary)
The magnetic therapy device of the first aspect is a magnetic therapy device that is attached to the skin of a human body for use, the magnetic therapy device comprising a magnet and a sheet that supports the magnet and is attached to the skin, the magnet having a first shape extending along a first direction, the sheet having a second shape extending along a second direction, the second shape being larger than the first shape in a planar view, and the second direction being approximately the same as the first direction.

According to the magnetic therapy device of the first aspect, since the magnet has a first shape extending along the first direction, the magnetic field generated by the magnet extends over a wide area along the first direction. In addition, since the magnet is continuously formed along the first direction, the density of the magnet in the magnetic therapy device is also high. As a result, when the magnetic therapy device is attached to the skin and used, it can exert a high-strength magnetic field over a wide area inside the human body. Furthermore, even if only one magnetic therapy device is used, it is possible to exert a high-strength magnetic field over a wide area inside the human body, so the user can easily feel the high magnetic therapy effect. Therefore, when using the magnetic therapy device, it is not necessarily necessary to attach multiple magnetic therapy devices to the skin, and the effort required to attach the magnetic therapy device to the skin is also reduced.

In addition, according to the magnetic therapy device of the first aspect, in a plan view, the second shape of the sheet is larger than the first shape of the magnet, and the second direction (longitudinal direction) of the sheet is approximately the same as the first direction (longitudinal direction) of the magnet. Therefore, the magnet is protected by the sheet, and the magnetic therapy device can be produced in a minimum size while ensuring an attachment area of the sheet to the skin.

The magnetic therapy device according to the second aspect is the magnetic therapy device according to the first aspect, in which the sheet has a first cutout portion at least on one end and the other end in the second direction.

According to the magnetic therapy device of the second aspect, when the magnetic therapy device is attached to the skin and used, the tension in the sheet is relaxed, preventing the magnet from being pressed excessively against the skin and preventing damage to the sheet.

The magnetic therapy device according to the third aspect is the magnetic therapy device according to the first or second aspect, in which the sheet has a first cutout portion at both one end and the other end in the second direction.

According to the magnetic therapy device of the third aspect, when the magnetic therapy device is attached to the skin and used, the tension in the sheet is further relaxed, further preventing the magnet from being pressed excessively against the skin and damage to the sheet.

The magnetic therapy device according to the fourth aspect is a magnetic therapy device according to any one of the first to third aspects, in which the sheet has a second cutout at at least one end and the other end in a direction intersecting the second direction.

With the magnetic therapy device of the fourth aspect, the sheet is easily twisted, so the sheet cannot follow the movement of the skin, and the magnetic therapy device is prevented from unintentionally detaching from the skin.

The magnetic therapy device according to the fifth aspect is a magnetic therapy device according to any one of the first to fourth aspects, in which the sheet has a second cutout at both one end and the other end in a direction intersecting the second direction.

The magnetic therapy device according to the fifth aspect allows the sheet to twist even more easily, so that the sheet is unable to follow the movement of the skin, further preventing the magnetic therapy device from unintentionally detaching from the skin.

The magnetic therapy device according to the sixth aspect is a magnetic therapy device according to any one of the first to fifth aspects, in which the magnet has one side that faces the skin when attached to the skin and another side that is the opposite side to the one side, the one side has a one-side groove that is provided along the first direction of the magnet, and the other side has a other-side groove that is provided along the first direction of the magnet.

According to the magnetic therapy device of the sixth aspect, the gap formed between the one-side groove and the skin allows sweat to be easily discharged along the gap to the outside of the magnetic therapy device, and the skin is less likely to become stuffy due to sweat, making it easier for the user to use the magnetic therapy device comfortably. In addition, when an unintended external force is applied to the outer surface of the magnetic therapy device, the width of the other-side groove expands or contracts, causing the other-side groove to deform, making it easier for the other surface to absorb the external force. Therefore, external forces are less likely to reach the skin, and damage to the skin caused by external forces on the magnetic therapy device is suppressed.

The magnetic therapy device according to the seventh aspect is the magnetic therapy device according to the sixth aspect, in which the one-side groove is provided over the entire length of the one side in the first direction, and the other-side groove is provided over the entire length of the other side in the first direction.

According to the magnetic therapy device of the seventh aspect, even when the magnetic therapy device is used so that the magnet is in close contact with the skin over its entire length, sweat is easily discharged to the outside of the magnetic therapy device along the gap. In addition, when an external force is applied to the magnetic therapy device, the width of the other side groove expands or contracts over the entire length of the other side, causing the other side groove to deform, making it easier for the other side to absorb the external force. This makes it even more difficult for external forces to reach the skin, further preventing damage to the skin due to external forces applied to the magnetic therapy device.

The magnetic therapy device according to the eighth aspect is the magnetic therapy device according to the sixth or seventh aspect, in which the depth of the other side groove is deeper than the depth of the one side groove, and the width of the other side groove is wider than the width of the one side groove.

According to the magnetic therapy device according to the eighth aspect, the one-side groove can be formed narrower and shallower than the other-side groove, so that when the magnetic therapy device is attached to the skin and used, the skin is less likely to enter the one-side groove on the one side of the magnet facing the skin. Therefore, a gap along the first direction is easily formed between the one-side groove and the skin, and sweat is easily discharged along the gap to the outside of the magnetic therapy device. This makes it even more difficult for the skin to become stuffy due to sweat, making it easier for the user to use the magnetic therapy device comfortably. In addition, since the skin is less likely to enter the one-side groove, excessive deformation and damage due to the magnet following the movement of the skin that has entered the one-side groove is suppressed. In addition, since the other-side groove can be formed wider and deeper than the one-side groove, when an external force or the like is applied to the magnetic therapy device, the degree of expansion and contraction of the width of the other-side groove becomes larger, making it easier for the other side to absorb the external force or the like. Therefore, it is less likely for external forces or the like to reach the skin, and damage to the skin due to external forces or the like on the magnetic therapy device is suppressed.

The magnetic therapy device according to the ninth aspect is a magnetic therapy device according to any one of the sixth to eighth aspects, in which the one-side grooves are provided in multiple locations on the one side, and the other-side grooves are provided in multiple locations on the other side.

According to the magnetic therapy device of the ninth aspect, the gap formed between the one-side groove and the skin increases the number of routes for sweat to be discharged to the outside of the magnetic therapy device, making the skin less likely to become stuffy due to sweat, making it easier for the user to use the magnetic therapy device more comfortable. In addition, external forces on the magnetic therapy device are dispersed by the multiple other-side grooves, making it even more difficult for external forces to reach the skin, further preventing damage to the skin due to external forces on the magnetic therapy device.

1 Magnet 1a One surface of magnet 1b Other surface of magnet 11a, 111a, 112a One surface groove 11b, 111b, 112b Other surface groove 121-123 Magnet portion 12a, 121a-123a One surface protrusion 12b, 121b-123b Other surface protrusion 2 Sheet 2a One surface of sheet 2b Other surface of sheet 21-23 First to third sheets 2m First cutout portion 2n Second cutout portion B Human body D1 First direction (longitudinal direction of magnet)
D2 Second direction (longitudinal direction of sheet)
Ha Depth of one side gutter Hb Depth of other side gutter La, Lb Tangent M Magnetic therapy device R Release paper (release film)
S Skin Wa Width of one side gutter Wb Width of other side gutter

Claims (9)

A magnetic therapy device that is attached to the skin of the human body and used.
The magnetic therapy device includes:
A magnet,
a sheet for supporting the magnet and attaching it to the skin;
the magnet has a first shape extending along a first direction;
the sheet has a second shape extending along a second direction;
A magnetic therapy device, wherein, in a plan view, the second shape is larger than the first shape, and the second direction is approximately the same as the first direction. The sheet has a first cutout portion at least at one end and the other end in the second direction.
2. The magnetic therapy device according to claim 1. The sheet has a first notch at both one end and the other end in the second direction.
3. A magnetic therapy device according to claim 2. the sheet has a second notch at least at one end and the other end in a direction intersecting the second direction;
4. The magnetic therapy device according to claim 3. The sheet has a second notch at both one end and the other end in a direction intersecting the second direction.
5. The magnetic therapy device according to claim 4. the magnet has one surface facing the skin when attached to the skin and another surface opposite the one surface,
The one surface has a one-surface groove provided along the first direction of the magnet, and the other surface has an other-surface groove provided along the first direction of the magnet.
A magnetic therapy device according to any one of claims 1 to 5. The one-surface gutter is provided over the entire length of the one surface in the first direction,
The other surface gutter is provided over the entire length of the other surface in the first direction.
7. The magnet for magnetic therapy device according to claim 6. The depth of the second side groove is greater than the depth of the first side groove,
The width of the other side groove is wider than the width of the one side groove.
7. The magnetic therapy device according to claim 6. The one-surface gutter is provided in plurality on the one surface,
The other surface gutter is provided in plurality on the other surface,
7. The magnetic therapy device according to claim 6.

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