TWI677360B - Method for producing magnetic therapeutic device - Google Patents

Abstract

The present invention provides a method for manufacturing a magnetic therapeutic device capable of exerting a stable magnetic force effect. A method for manufacturing a magnetic treatment device used by being wound around a part of the body includes a primary molding step and a secondary molding step. The one-step forming step is to fill one side of a pair of first metal molds with a flexible material, arrange a plurality of magnets on the other side, and use the pair of first metal molds to press-mold the plurality of magnets along The flexible primary elongated body arranged in a direction and exposed on the upper surface is subjected to a molding step. In the secondary molding step, the primary elongated body is fixed by disposing the plurality of magnets on one side of one of a pair of second metal molds, refilling the flexible material to the other, and using the pair of first A two-metal mold is a step of forming a flexible secondary elongated body in which the plurality of magnets are embedded therein along the longitudinal direction.

Description

Manufacturing method of magnetic therapeutic apparatus

The present invention relates to a method for manufacturing a magnetic therapy device, and more particularly to a method for manufacturing a magnetic therapy device that is wound around a part of the body and used.

Conventionally, for the purpose of health effects such as blood circulation promotion using magnetic action, a magnetic therapeutic device used around a part of the body in a style such as a necklace or a bracelet is known. Patent Document 1 discloses a magnetic therapeutic device in which magnet particles are embedded at regular intervals in a flexible elongated body. In addition, Patent Document 1 discloses a method for manufacturing the magnetic treatment device. Specifically, one side of a pair of metal molds is filled with silicone rubber, and the other side is also filled with silicone rubber, and magnet particles are provided thereon. Then, the pair of metal molds are superposed and press-molded in a high-temperature environment. That is, the magnetic treatment device in which the magnet particles are embedded is molded in one molding.

Prior art documents: Patent Document 1, Japanese Patent Laid-Open No. 2009-18061.

However, the present inventors have found that in the above-mentioned manufacturing method of Patent Document 1, in the magnetic therapeutic device finally manufactured, each product has a magnet particle The problem of unevenness occurs in the vertical position. The vertical direction referred to herein is a direction orthogonal to the longitudinal direction of the elongated body, and is a direction in which a pair of metal molds are arranged. In addition, the unevenness of the magnet particles in the vertical direction means that the distance from the surface of the elongated body to the magnet particles is uneven, and the magnetic flux density is inversely proportional to the square of the distance. Therefore, in the manufacturing method of Patent Document 1, uneven magnetic force is generated on the surface of the elongated body for each product, and magnetic effects such as blood circulation promotion are unstable.

An object of the present invention is to provide a method for manufacturing a magnetic therapeutic device capable of exhibiting a stable magnetic effect.

In order to achieve the above-mentioned object, the method for manufacturing a magnetic therapy device according to the first aspect of the present invention is a method for manufacturing a magnetic therapy device that is wound around a part of the body, and includes a primary molding step and a secondary molding step. In the above-mentioned one-step molding step, one side of a pair of first metal molds is filled with a flexible material, and a plurality of magnets are arranged on the other side. The above-mentioned pair of first metal molds are used for press molding to form a plurality of magnets on the upper surface. A step of forming a flexible primary elongated body arranged in a lengthwise manner in an exposed manner. In the secondary molding step, the primary elongated body is provided on one side of the pair of second metal molds with the plurality of magnets disposed outside, and the other is refilled with a flexible material. A step of press-molding a metal mold to form a flexible secondary elongated body in which the plurality of magnets are embedded in the longitudinal direction.

Here, the magnetic treatment device is manufactured by two moldings of a primary molding and a secondary molding. In one molding, one side of the pair of first metal molds is filled. Filled with a flexible material, the plurality of magnets are arranged on the other side, and the mold is press-formed so as to overlap. Then, the primary elongated body having flexibility arranged so that the plurality of magnets are exposed on the upper surface in the longitudinal direction is molded by the primary molding. In the subsequent secondary molding, the primary elongated body is provided on one side of the pair of second metal molds so that the plurality of magnets are disposed on the outside, and the other side is refilled with a flexible material to make the The metal molds are overlapped for press forming. As a result, the flexible secondary elongated body in which the plurality of magnets are embedded in the longitudinal direction is molded.

When performing the secondary molding, the flexible portion (hereinafter, referred to as the primary portion) that has undergone the primary molding has been subjected to the primary press molding, and thus has been hardened. Therefore, in the secondary molding, it is difficult for the magnet to move relative to the primary part, and the position of the magnet in the magnetic treatment device in the vertical direction is stable. The vertical direction referred to herein is a direction orthogonal to the longitudinal direction of the magnetic treatment device, and is a direction in which a pair of metal molds are arranged. As a result, it is difficult to produce uneven magnetic force on the surface of the magnetic treatment device for each product, and the magnetic treatment device capable of exhibiting a stable magnetic effect is manufactured.

A method of manufacturing a magnetic therapeutic device according to a second aspect of the present invention is a method of manufacturing a magnetic therapeutic device according to the first aspect. In the secondary molding step, at least one of the thickness of the flexible material of the magnet is covered by The secondary elongated body is formed by secondary molding in such a manner that the thickness of the newly formed portion is thinner than the thickness of the portion formed in the primary molding step.

When performing secondary molding as described above, secondary At the time of molding, the flexible portion (primary portion) that has been subjected to the primary molding has been subjected to the primary press molding, and therefore, has been shrunk. Therefore, at the time of secondary molding, the primary portion has a smaller shrinkage rate than a portion (secondary portion) of a flexible material that is first molded in the secondary molding. As a result, in the secondary molding, in the flexible material covering the magnet, the secondary portion shrinks more than the primary portion. Therefore, the magnetic treatment device is bent toward the secondary portion side. Therefore, a bending fold is generated in the magnetic treatment device, and the magnetic treatment device can be easily wound around the body.

Here, the magnetic treatment device is formed so that the thickness of the secondary portion of the flexible portion covering at least one magnet (hereinafter referred to as an eccentric magnet) is thinner than that of the primary portion. Therefore, when the magnetic therapeutic device is wound around the body using the curved folds of the magnetic therapeutic device, the eccentric magnet is naturally biased toward the inner side of the ring even from the user's unconsciousness (from the center of the magnetic therapeutic device to the magnetic therapeutic device) The center of the bend is off-center). That is, the eccentric magnet is maintained at a position close to the body when the magnetic treatment device is worn. Therefore, here, the magnetic treatment device exhibiting sufficient magnetic force on the surface is manufactured, and health effects such as blood circulation promotion are improved.

A method of manufacturing a magnetic treatment device according to a third aspect of the present invention is the method of manufacturing the magnetic treatment device according to the first or second aspect. In the above-mentioned one-step molding step, the upper surface of the first elongated body is changed from the one-time Two or more first magnets protruding upward from the lower surface of the elongated body at a first distance and two or more first magnets protruding upward from the lower surface of the primary elongated body at a second distance shorter than the first distance. The second magnets are aligned to form the first elongated body. on The two or more first magnets are arranged on the upper surface of the primary elongated body at substantially regular intervals along the longitudinal direction of the primary elongated body.

Here, the magnet (the first magnet) having a short distance from the surface of the magnetic treatment device and the distant magnet (the second magnet) are arranged in a mixed manner. That is, on the surface of the magnetic treatment device, a magnet (the first magnet) that easily exhibits a strong magnetic force and a magnet (the second magnet) that is likely to exhibit a relatively weak magnetic force are arranged in a mixed manner.

When all the magnets are arranged near the surface of the magnetic treatment device, the magnetic force is always too strong. However, when all of the magnets are disposed at positions separated from the surface of the magnetic treatment device, a strong magnetic force is not exerted, and a sufficient magnetic effect cannot be obtained. However, here, the first magnet and the second magnet are used in combination. In addition, two or more of the first magnets are arranged at substantially equal intervals in the longitudinal direction. As a result, it is possible to obtain an effect that a strong magnetic force is exerted at the tip of the needle at approximately regular intervals by the first magnet, and a balanced magnetic force that does not cause an excessively large magnetic force as a whole is obtained.

A method of manufacturing a magnetic therapy device according to a fourth aspect of the present invention is a method of manufacturing a magnetic therapy device according to the third aspect, and the first magnet is stronger than the second magnet.

Here, the magnet having a relatively strong magnetic force (the first magnet) is disposed near the surface of the magnetic treatment instrument than the magnet having a relatively weak magnetic force (the second magnet). Therefore, when the magnetic treatment device is worn on the body, maintaining the first magnet close to the body can further increase the effect of the strong magnetic force generated by the first magnet.

A method for manufacturing a magnetic therapeutic device according to a fifth aspect of the present invention is In a method of manufacturing a magnetic treatment device according to one aspect or the second aspect, the plurality of magnets include two or more strong magnets having relatively strong magnetic forces and two or more weak magnets having relatively weak magnetic forces. In the above-mentioned primary molding step, the primary elongated body is molded on the upper surface of the primary elongated body such that the two or more ferromagnets are arranged at substantially equal intervals in the longitudinal direction.

When only the strong magnet having a relatively strong magnetic force is arranged in the magnetic treatment instrument, the magnetic force is always too strong. However, when only this weak magnet having a relatively weak magnetic force is disposed, a portion having no strong magnetic force is not exerted, and a sufficient magnetic effect cannot be obtained. However, here, the strong magnet and the weak magnet are used in combination. In addition, two or more of these strong magnets are arranged at substantially equal intervals in the longitudinal direction. As a result, a strong magnetic force can be exerted at the tip of the needle at approximately regular intervals by using the strong magnet, and a balanced magnetic force effect can be obtained in which the overall magnetic force is not excessively strong.

Therefore, the present invention has the following advantageous effects over the conventional technology: The effects of the present invention are as follows. According to the present invention, it is possible to manufacture a magnetic therapeutic device in which it is difficult for each product to generate uneven magnetic force on the surface of the magnetic therapeutic device, and a stable magnetic effect can be exerted.

1‧‧‧ Magnetic Therapy Apparatus

1a‧‧‧Magnetic Therapy Device (about half)

10‧‧‧ long body

10a‧‧‧Long body (about half)

11‧‧‧ main body

12‧‧‧ Connection Department

13‧‧‧Connecting Department

15‧‧‧One-time molding

21‧‧‧Magnet (first magnet, strong magnet)

22‧‧‧Magnet (second magnet, weak magnet)

30‧‧‧Connector

31‧‧‧body shaft

32‧‧‧Limiter

33‧‧‧Limiter

34‧‧‧Limiter

40‧‧‧Connector

41‧‧‧body shaft

42‧‧‧Limiter

43‧‧‧Limiter

44‧‧‧ Top tube

51‧‧‧ metal mold (first metal mold)

51a‧‧‧ surface

51b‧‧‧slot

52‧‧‧ metal mold (first metal mold)

52a‧‧‧ surface

52b‧‧‧ opening

52c‧‧‧ opening

61‧‧‧Metal mold (second metal mold)

61a‧‧‧ surface

61b‧‧‧slot

61c‧‧‧ opening

61d‧‧‧ opening

62‧‧‧Metal mold (second metal mold)

62a‧‧‧ surface

62b‧‧‧slot

62c‧‧‧ opening

62d‧‧‧ opening

A1‧‧‧central axis

C1‧‧‧dotted line

C2‧‧‧dotted line

C3‧‧‧dot line

C4‧‧‧dot line

d1‧‧‧distance

d2‧‧‧distance

S1‧‧‧ opening

S11‧‧‧ deepest

S12‧‧‧Central Section

S13‧‧‧Entrance

FIG. 1 is an external view of a magnetic treatment device according to an embodiment of the present invention.

FIG. 2 is a view showing a form in which a magnetic treatment device (approximately half) according to an embodiment of the present invention is linearly extended.

FIG. 3 is a view showing a connection structure of a detachable connection portion.

FIG. 4 is a diagram showing a connection structure of a connection portion that is not supposed to be removed.

Fig. 5, V-V sectional view of Fig. 1.

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 1.

FIG. 7 is a view showing a metal mold (outer half body side) used in the primary molding.

FIG. 8 is a view showing a metal mold (magnet side) used in the primary molding.

FIG. 9 is a partial cross-sectional view of a pair of metal molds in a single molding.

FIG. 10 is a partial cross-sectional view of a primary molded product.

FIG. 11 is a view showing a metal mold (primary molded product side) used in the secondary molding.

FIG. 12 is a view showing a metal mold (inside half body side) used in the secondary molding.

FIG. 13 is a partial cross-sectional view of a pair of metal molds in a secondary molding.

FIG. 14 is a partial cross-sectional view of a secondary molded product.

The detailed description and technical content of this creation are described below in conjunction with the drawings. Furthermore, the drawings in this creation are for convenience of illustration, and their proportions may not be drawn according to the actual proportions. These drawings and their proportions are not intended to limit the scope of this creation, and will be described here first.

Hereinafter, a method for manufacturing a magnetic therapeutic device according to an embodiment of the present invention will be described with reference to the drawings.

<1. Structure of Magnetic Therapeutic Apparatus 1>

FIG. 1 shows an external view of a magnetic treatment device 1 according to the present embodiment. This magnetic treatment device 1 is wound around a part of the body and used for the purpose of health effects such as blood circulation promotion by the use of magnetism. As shown in FIG. 1, the magnetic treatment device 1 includes an elongated body 10 having flexibility, and a plurality of magnets 21 and 22 are embedded in the elongated body 10 in a manner of being separated in the longitudinal direction. In addition, the elongated body 10 may be transparent or opaque. In the case of opaque, the magnets 21 and 22 cannot be confirmed from the outside. However, in FIG. 1, the magnets 21 and 22 are shown by solid lines for convenience of explanation. In addition, the same is true in other drawings. When the elongated body 10 and a jacking pipe 44 described later are opaque, an unrecognizable internal structure is indicated by a solid line.

The magnetic treatment device 1 includes two magnetic treatment devices 1 a shown in FIG. 2, and the two magnetic treatment devices 1 a are connected using coupling members 30 and 40 (see FIGS. 3 and 4). However, it is also possible to form the magnetic treatment device 1 shorter than the magnetic treatment device 1 by connecting both ends of one of the magnetic treatment devices 1a in a ring shape using the connection member 30 (the connection member 40 may also be used). In this way, only one magnetic treatment device 1 of the magnetic treatment device 1a is worn as a bracelet on a thin wrist. On the other hand, the two magnetic therapeutic devices 1a are connected to a ring-shaped magnetic therapeutic device 1 as a necklace and worn around a thick neck. However, the wearing part of the body is not limited to this, and it can be worn on any part of the body that requires a magnetic effect such as blood circulation promotion, such as the ankle. In addition, three or more of the magnetic treatment devices 1a may be connected in a ring shape by using the additional connecting member 40 (or the connecting member 30 may be used).

As shown in FIG. 2, the magnetic treatment device 1 a has an elongated body 10 a and The plurality of magnets 21 and 22 arranged in the elongated body 10a in the longitudinal direction. In addition, the elongated body 10a constitutes the elongated body 10 together with another elongated body 10a. The elongated body 10 a includes an elongated body portion 11 in which a plurality of the magnets 21 and 22 are embedded, a connection portion 12 disposed at one end of the body portion 11, and a connection portion 13 disposed at the other end of the body portion 11. The main body portion 11 is a solid member that covers the entirety of the magnets 21 and 22 inside. Therefore, the magnets 21 and 22 cannot move inside the main body portion 11. In addition, a gap can be partially provided in the main body portion 11.

The elongated body 10a of the present embodiment is made of silicone rubber. However, the material of the elongated body 10a is not limited to this, and a variety of materials can be selected as long as it has a degree of flexibility capable of bending the magnetic treatment device 1 into a loop as shown in FIG. 1. For example, rubber materials other than silicone rubber, soft elastomers, and soft resins can be selected, and urethane rubber, nitrile rubber, and the like can be appropriately selected. However, silicone rubber is preferred because it has less adverse effects on the skin. In addition, silicone rubber is also preferable in terms of its soft skin feel. In addition, as disclosed in Japanese Patent Application Laid-Open No. 2008-173405, the magnetic treatment device 1 is known that is formed of a mixture obtained by mixing a magnetic powder with a main material of a silicone rubber. Furthermore, in the case of the magnetic treatment device 1 containing such a magnetic powder, the magnetic treatment device 1 is in contact with the wearer's sweat or the like, and moisture is contained in the magnetic powder, which may cause relatively thin swelling. However, in this embodiment, since the elongated body 10a does not contain a magnetic component, such swelling can be prevented.

FIG. 3 is a diagram showing a connection structure of the connection portions 12 and 12. The connecting portions 12 and 12 are detachably connected by the connecting member 30. The connection portion 12 is better than The body portion 11 is slightly enlarged in diameter, and an opening S1 capable of receiving approximately half of the coupling member 30 is formed inside. The coupling 30 is a pin-shaped member made of resin, and includes a main body shaft 31, stoppers 32 and 33 disposed at both ends of the main body shaft 31, and a position slightly closer to the stopper 33 than the center of the main body shaft 31. The limiter 34. The limiters 32 to 34 are all flange-shaped portions having a larger diameter than the main body shaft 31, and the diameters are larger in the order of the limiter 33, the limiter 34, and the limiter 32. The opening S1 of the connection portion 12 has a depth of approximately half the length of the connection member 30 so as to correspond to the shape of the connection member 30. The opening S1 includes a deepest portion S11 having the largest diameter, a central portion S12 having a smaller diameter than the deepest portion S11, and an entrance portion S13 having a smaller diameter than the deepest portion S11 and larger than the central portion S12. The central portion S12 is an opening to receive the main body shaft 31, and the deepest portion S11 is an opening to receive the limiter 33 or the limiter 32. The entrance section S13 can receive the stopper 34. Then, the stoppers 33 and 34 are inserted into the opening S1 of the connection portion 12 on one side, and the stopper 32 is inserted into the opening S1 of the other connection portion 12 to connect the connection portions 12 and 12. Once the connecting portions 12 and 12 are connected, since the diameter of the stopper 32 is smaller than that of the stopper 33, it is difficult to remove the stopper 33 from the connecting portion 12, but it is easier to remove the stopper 32. . Therefore, by attaching and detaching the stopper 32 to the opening S1 of the connection portion 12 receiving the stopper 32, the magnetic treatment device 1 can be easily attached to and detached from the neck or the like of the wearer. In addition, since the connecting portions 12 and 12 are made of silicone rubber having flexibility, attachment and detachment to and from the connecting member 30 can be easily achieved by using the elasticity of this material.

FIG. 4 is a diagram showing a connection structure of the connection portions 13 and 13. The link The parts 13 and 13 are different from the connecting parts 12 and 12 and are not supposed to be detached. The connecting members 40 make it difficult to attach and detach. The connecting portion 13 has the same structure as the connecting portion 12. On the other hand, this coupling 40 is a pin-shaped member made of resin, and includes a main body shaft 41 and stoppers 42 and 43 disposed at both ends of the main body shaft 41. The restrictors 42 and 43 are larger in diameter than the body shaft 41 and have the same diameter as the restrictor 33. Therefore, when the stoppers 42 and 43 are once inserted into the opening S1 of the connecting portions 13 and 13, the connecting portions 13 and 13 are difficult to remove. In addition, the main body shaft 41 is longer than the main body shaft 31 of the coupling 30, and the ejector pipe 44 is mounted around the main body shaft 41. The jack pipe 44 of the present embodiment is formed of a silicone rubber in the same manner as the elongated body 10a, but may be formed of a different material. The top pipe 44 can be a decorative portion. Therefore, by working on the material, color, shape, and the like of the ejector tube 44, it is possible to provide added value as an accessory of the magnetic treatment device 1.

Next, the magnets 21 and 22 will be described. The magnets 21 and 22 have a rectangular parallelepiped shape, and the magnet 21 has a stronger magnetic force than the magnet 22 in terms of a single magnet. As shown in FIG. 1, in the present embodiment, the four magnets 21 are arranged at substantially equal intervals (approximately 90 ° intervals) along the longitudinal direction of the ring-shaped magnetic treatment device 1. The magnets 22 are arranged so as to be embedded at approximately equal intervals between the four magnets 21. Four magnets 22 are arranged between each of the adjacent magnets 21 and 21. The entire arrangement of the magnets 21 and 22 is also approximately equally spaced. However, the interval between the magnets near the connection portions 12 and 13 is designed to be slightly shorter than the interval between the magnets in the center of the main body portion 11 far from the connection portions 12 and 13. This is because, when the magnetic treatment device 1 is connected in a ring shape, the connection portions 12, 12 and The connecting portions 13 and 13 are weak in magnetic force, and therefore, they are supplemented.

However, when only the magnet 21 having a relatively strong magnetic force is disposed in the magnetic treatment device 1, the magnetic force is always too strong. In addition, when only the magnet 22 having a relatively weak magnetic force is disposed, a strong magnetic force is not exerted, and a sufficient magnetic effect cannot be obtained. However, in this embodiment, with the arrangement of the magnets 21 and 22 as described above, the magnet 21 exerts strong magnetic force at the tip of the needle at substantially equal intervals, and exerts a balanced magnet effect that the magnet as a whole is not excessively strong. .

FIG. 2 shows a form in which the magnetic treatment device 1a is stretched from both ends and linearly extended. However, the elongated body 10a or the magnetic treatment device 1a is formed so as to naturally bend in a certain direction along the longitudinal direction without applying an external force. Therefore, when the magnetic treatment device 1a, 1a is formed into a ring shape using the coupling members 30, 40, the surface of the magnetic treatment device 1 facing the center of the ring is constant. In addition, the magnetic treatment device 1a can be easily wound around the body by the curved folds provided in the magnetic treatment device 1a. In addition, such a curved pleat of the elongated body 10a is given by a manufacturing method described later, but the method of giving the curved pleat is not limited to this. For example, bending folds can be generated by forming two portions of the elongated body 10a virtually divided by a plane parallel to the central axis A1 of the elongated body 10a from materials having different flexibility. In this magnetic treatment device 1, a portion having greater flexibility is naturally disposed on the inside, and a portion having less flexibility is naturally disposed on the outside. Alternatively, the curved pleats can also be generated by forming two parts of the elongated body 10a by virtually dividing the elongated body 10a with a plane parallel to the central axis A1 of the elongated body 10a from materials having different shrinkage rates.

FIG. 5 is a sectional view taken along the line V-V of FIG. 1, and FIG. 6 is a sectional view taken along the line VI-VI of FIG. 1. Sectional view. As shown in the figure, the center of the magnet 22 and the central axis A1 of the elongated body 10 substantially coincide. On the other hand, the magnet 21 is eccentrically arranged in the elongated body 10 from the central axis A1 of the elongated body 10 to the bending center of the magnetic treatment device 1 formed by the bending pleats. In other words, the thickness of the portion of the silicone rubber portion covering the magnet 21 that is naturally located on the inner side of the magnet 21 by the bending fold when the magnetic treatment device 1 is looped is larger than the thickness of the portion that is naturally on the outside of the magnet 21 The thickness of the portion is thin. As a result, when the magnetic treatment device 1 is wound around the body, the magnet 21 is naturally biased toward the inside of the ring even if the user is not conscious. Therefore, when the magnetic treatment device 1 is worn, the magnet 21 is disposed near the body and exerts a sufficient magnetic effect such as blood circulation promotion. In addition, the position of the magnet 21 may be moved in accordance with the rotation of the wearer's movement with the movement of the wearer. However, the moving direction of the magnet 21 is limited in the circumferential direction of the ring of the magnetic treatment device 1 as a rule. That is, due to the curved pleats of the magnetic treatment device 1, the magnetic treatment device 1 is difficult to rotate in the radial direction of the ring, and the magnet 21 is always maintained close to the body.

The size and material of each part of the magnetic treatment device 1 can be appropriately set, but in this embodiment, as an appropriate example, it is set as follows. That is, the radial cross-sectional dimensions of the magnetic treatment device 1 of the magnets 21 and 22 and the silicone rubber portions around the magnets 21 and 22 are shown in FIGS. 5 and 6. The dimensions of the magnets 21 and 22 along the longitudinal direction of the magnetic treatment device 1 are 10.06 mm and 6.0 mm, respectively. In this embodiment, as a suitable example, a samarium-cobalt magnet (composition ratio: Sm22%, Co62.5%, Pr15%, Fe0.16%, Sn0.34%) is selected as the magnet 21 as the magnet 21 The magnet 22 is a wet-type anisotropic strontium ferrite magnet (composition ratio: SrO10%, Fe ₂ O ₃ 90%). The magnetic flux density on the surface of the magnet 21 is about 350 mT, and the magnetic flux density on the surface of the magnet 22 is about 120 mT. The magnetic flux density of the magnet 21 on the surface of the elongated body 10 is approximately 150 mT (measured at the position closest to the magnet 21), and the magnetic flux density of the magnet 22 on the surface of the elongated body 10 is approximately 70 mT ( (Measured at the position closest to the magnet 22). As the material of the coupling members 30 and 40, polyacetal resin is selected.

<2. Manufacturing method>

Next, a method for manufacturing the magnetic treatment device 1 according to the present embodiment will be described. In this manufacturing method, the magnetic treatment device 1 is manufactured by two moldings of a primary molding and a secondary molding.

)合同公司製的矽酮橡膠化合物(TSE260-7U)及添加劑(TC-8E)。 First, a thin sheet made of silicone rubber, which is a material of the elongated body 10, is manufactured. This thin plate is produced by, for example, adding a vulcanizing agent and a pigment to a silicone rubber compound, mixing them, and forming them into a thin plate shape. In this embodiment, as a suitable example, as the silicone rubber compound and the vulcanizing agent, one (

) Contracted company's silicone rubber compound (TSE260-7U) and additives (TC-8E).

Next, from the above thin plate, an elongated member having a shape substantially as a half of the body portion 11 of the elongated body 10a is cut out. The half body of the main body portion 11 is a portion that virtually divides one of the main body portions 11 by a plane including the central axis A1 extending in the longitudinal direction. In addition, the half body corresponds to a portion of the main body portion 11 that uses the above-mentioned curved pleat element to the outside when the magnetic treatment device is rolled into a ring shape. In this sense, the strip-shaped parts that are cut here are referred to as Outer half body.

In addition, a necessary number of magnets 21 and 22 embedded in the magnetic treatment device 1 are prepared. In this embodiment, in order to ensure the adhesion to the outer half made of silicone rubber, a suitable primer is applied to the surfaces of the magnets 21 and 22 to provide the effect of an adhesive or adhesion improving agent.剂 液。 Liquid. As the primer liquid, a liquid that does not change the magnetic flux of the magnets 21 and 22 is preferable. For example, JX-201 manufactured by Kunshan Jianxiang Silicon Material Co., Ltd. can be used. In addition, if the magnet is a rust-resistant type, for example, a samarium-cobalt magnet, it is preferable to perform rust-proof coating before applying the primer liquid.

When the above preparations are completed, molding is performed once. In the primary molding, a pair of metal molds 51 and 52 shown in FIGS. 7 and 8 are used. This metal mold 51 is a plate-shaped member in which a plurality of grooves 51b having the shape of an outer half is formed on one surface 51a. The metal mold 52 is a plate-shaped member in which a plurality of rectangular parallelepiped-shaped openings 52b and 52c in which the magnets 21 and 22 are arranged are formed on one surface 52a. In addition, the opening 52b is an opening for installing the magnet 21, and the opening 52c is an opening for installing the magnet 22. The openings 52b and 52c are disposed at positions facing the groove 51b when the surfaces 51a and 52a of the molds 51 and 52 are opposed to each other. In addition, the openings 52b and 52c are formed on the surface 52a of the metal mold 52 in accordance with the arrangement order and interval of the magnets 21 and 22 in the finished product of the magnetic treatment device 1a.

Further, each groove 51b of the metal mold 51 is filled with an outer half body, and the magnets 21 and 22 are provided in the openings 52b and 52c of the metal mold 52, respectively. Then, as shown in FIG. 9, the metal mold 51 is superimposed on the metal mold 52 so that the surfaces 51 a and 52 a face each other, and press processing (primary molding) is performed. One time The silicone rubber of the outer half after the molding is preferably in a semi-vulcanized state. This one-time molding can be performed under normal temperature or a high temperature environment higher than normal temperature. In this embodiment, a load of 8.5 tons is applied to the metal mold under a high-temperature environment at 185 ° C. for five minutes. In addition, FIG. 9 is a partial cross-sectional view of the metal molds 51 and 52 in the primary molding, and includes cross sections of the metal molds 51 and 52 at positions indicated by dotted lines C1 and C2 in FIGS. 7 and 8. During the primary molding, the upper surfaces of the magnets 21 and 22 (surfaces on the opposite side of the outer half) are pressed against the molds 51 and 52. Therefore, the up and down directions of the magnets 21 and 22 (the molds 51 are disposed) , 52), the positions of the magnets 21 and 22 are fixed to the outer half in this state.

FIG. 10 is a partial cross-sectional view of a primary molded product 15 manufactured by primary molding. The primary molded product 15 is arranged on the outer half so that a plurality of the magnets 21 and 22 are exposed on the upper surface in the longitudinal direction. In addition, as shown in FIG. 9, the opening 52 b for the magnet 21 of the metal mold 52 is deeper than the opening 52 c for the magnet 22. Therefore, in the primary molded product 15, the lower surface of the outer half body reaches the The distance d1 on the upper surface of the magnet 21 is longer than the distance d2 from the lower surface of the outer half to the upper surface of the magnet 22. In other words, in the primary molded product 15, on the upper surface of the outer half, the magnet 21 projects upward from the lower surface of the outer half by the distance d1, and the magnet 22 extends from the lower surface of the outer half by the distance. The short distance d1 of d1 projects upward.

When the above primary molding is completed, the secondary molding is performed next. Before the secondary molding, a long member having a substantially half-shape of the elongated body 10a is cut out from the thin sheet of the silicone rubber. The half body of the elongated body 10a is It is a part which cut | disconnects one side of this elongated body 10a imaginarily with the surface which includes the said central axis A1 extended in the longitudinal direction. In addition, the half body corresponds to a portion of the elongated body 10a that uses the above-mentioned curved pleated element inside when the magnetic treatment device 1 is rolled into a ring shape. In this sense, the long member cut here is called the inner half.

In the secondary molding, a pair of metal molds 61 and 62 shown in FIGS. 11 and 12 are used. This mold 61 is a plate-shaped member in which a plurality of grooves 61b having the shape of an outer half is formed on one surface 61a. The groove 61 b is an opening for providing the primary molded product 15. In addition, at both ends of the groove 61b, openings 61c and 61d in the shape of the connecting portions 12 and 13 are continuous. The metal mold 62 is a plate-shaped member having a groove 62b and openings 62c and 62d having the same shape as the groove 61b and the openings 61c and 61d of the metal mold 61 on one surface 62a. The grooves 62b and the openings 62c and 62d are disposed at positions opposed to the grooves 61b and the openings 61c and 61d, respectively, when the surfaces 61a and 62a of the mold are opposed to each other.

The primary molded product 15 is arranged in each groove 61b of the metal mold 61, and the openings 61c and 61d of the metal mold 61 are filled with a silicone rubber material cut into a shape of the openings 61c and 61d. The silicone rubber material filled in the openings 61c and 61d is also cut out from the thin sheet of the silicone rubber. At this time, in order to form an opening S1 for inserting the coupling members 30 and 40 in the silicone rubber material in the openings 61c and 61d, a metal member corresponding to the shape of the opening S1 is disposed. The magnets 21 and 22 included in the primary molded product 15 are arranged so as to face the outside of the groove 61 b. On the other hand, each groove 62b and the openings 62c and 62d of the metal mold 62 are filled with an inner half.

Further, as shown in FIG. 13, the metal mold 62 is superposed on the metal mold 61 so that the surfaces 61 a and 62 a face each other, and press working (secondary molding) is performed. This secondary molding can be performed at a normal temperature or a high temperature environment higher than normal temperature. In this embodiment, a load of 8.5 tons is applied to the metal mold under a high temperature environment of 185 ° C., and the molding is performed for 7 minutes longer than the primary molding. 13 is a partial cross-sectional view of the metal molds 61 and 62 in the secondary molding, and includes cross sections of the metal molds 61 and 62 at positions indicated by dotted lines C3 and C4 in FIGS. 11 and 12. Then, the outer half and the inner half are vulcanized by secondary molding, and the two are bonded. In addition, after the secondary molding, the secondary molded article can be further vulcanized by leaving it in an oven at 200 ° C. for four hours, for example.

After the secondary molding, after the temperature is lowered, the secondary molded product is taken out from the molds 61 and 62. FIG. 14 is a partial cross-sectional view of a secondary molded product manufactured by secondary molding. The secondary molded product is the elongated body 10a of the silicone rubber in which the magnets 21 and 22 are embedded in the longitudinal direction, that is, the magnetic treatment device 1a. The metal member corresponding to the shape of the opening S1 is removed, and the opening S1 is opened.

In addition, when the secondary molding is performed, the outer half body included in the primary molded product 15 has been subjected to the primary press molding, and therefore, it has been hardened. Therefore, in the secondary molding, it is difficult for the magnets 21 and 22 to move with respect to the outer half, and the positions of the magnets 21 and 22 in the magnetic treatment device 1a in the vertical direction are stable. In addition, in this embodiment, after the primary molding, the magnets 21 and 22 may be firmly bonded to the outer half, which significantly suppresses the movement of the magnets 21 and 22 during the secondary molding. As a result, it is difficult for each product to attach the magnets 21 and 22 in the magnetic treatment device 1a. There is unevenness in position, or the magnetic force on the surface of the magnetic treatment device 1a is stable.

In addition, in the secondary molding, the shrinkage rate of the outer half body that has undergone the primary molding and has been shrunk is smaller than that of the inner half body that is first molded in the secondary molding. As a result, in the secondary molding, since the inner half of the silicone rubber serving as the elongated body 10a shrinks more than the outer half, the magnetic treatment device 1a is bent toward the inner half. As a result, a curved pleat that naturally bends toward the inner half body side is generated in the magnetic treatment device 1a, and the magnetic treatment device 1 can be easily wound around the body.

As shown in FIG. 14, the secondary molded product is formed so that the thickness of the material of the silicone rubber covering the magnet 21 is thinner than the thickness of the outer portion. Therefore, when the magnetic treatment device 1 is worn, the inside portion of the magnetic treatment device 1a naturally faces the inside of the ring by using the curved folds of the magnetic treatment device 1a, or the magnet 21 is naturally disposed toward the inside of the ring, which can effectively promote blood circulation promotion. And other magnetic effects.

In addition, unlike the above-mentioned primary and secondary molding, the connecting members 30 and 40 and the ejector tube 44 are respectively molded using different metal molds. Then, the magnetic treatment device 1 is manufactured by connecting the connection portion 12, the connection portion 13, the ejector tube 44, and the two magnetic treatment devices 1 a of these tools with the above-mentioned pattern.

<3. Modifications>

Hereinafter, one embodiment of the present invention will be described, but the present invention is not limited to the above embodiment, and various changes can be made without departing from the gist thereof. For example, the following changes can be made. The gist of the following modifications can be appropriately combined.

<3-1>

In the above-mentioned embodiment, only the magnet 21 among the magnets 21 and 22 is eccentric to the inner side of the ring in the elongated body 10, but the magnet 22 is also the same and can be formed in the ring 10 The inside is eccentrically formed. Alternatively, only the magnets 22 and 22 may be decentered in the same manner.

<3-2>

In the above embodiment, two types of the magnets 21 and 22 are used in combination, but only magnets having the same size and / or magnetic force can be used.

<3-3>

The conditions of the primary molding and the secondary molding are not limited to the above. For example, in the case where the primary molding time and the secondary molding time are not limited to 5 minutes and 7 minutes, the primary molding and the secondary molding may be performed at the same time, or the primary molding may be made longer. The temperature or load can also be changed appropriately.

The temperature conditions for the primary molding and the secondary molding are preferably 160 ° C to 185 ° C, and more preferably 175 ° C to 185 ° C. As long as the sulfurization of the outer half and the inner half is appropriately performed, an arbitrary temperature and time can be selected.

In addition, the inventors set (primary molding time, secondary molding time) = (5 points, 7 points), (5 points, 5 points), (7 points, 7 points), (10 points, 10 points). Otherwise, the magnetic treatment device 1a is manufactured under the same conditions as those of the above-mentioned embodiment. In addition, when the magnetic treatment device 1a is applied with a tension of about 10% in the longitudinal direction, the magnetic treatment device 1a is subjected to saline, sodium chloride, salt-treated water, soap, hydrochloric acid, artificial sweat (alkali), and artificial sweat (acid) , Castor oil and ethanol in each liquid for 8 days. Thereafter, it was confirmed whether cracks occurred in the joint between the primary molded part and the secondary molded part (the joint between the outer half and the inner half), and cracks were not confirmed in all tests.

Claims (5)

A method of manufacturing a magnetic therapeutic device, which is a method of manufacturing a magnetic therapeutic device that is wound around a part of a body. The method of manufacturing a magnetic therapeutic device includes the following steps: a molding step, One metal mold is filled with a flexible material on one side, and a plurality of magnets are arranged on the other side, and the pair of first metal molds are used for press molding to form the plurality of magnets so as to be exposed on the upper surface along the longitudinal direction. An array of flexible primary elongated bodies; and a secondary molding step of fixing the primary elongated bodies with the plurality of magnets arranged on one side of a pair of second metal molds, and refilling the The flexible material is press-molded using the pair of second metal molds to form a flexible secondary elongated body in which the plurality of magnets are embedded in the longitudinal direction. The method for manufacturing a magnetic therapeutic device according to claim 1, wherein in the secondary molding step, the secondary elongated body is molded in the following manner: in terms of the thickness of the flexible material covering at least one of the magnets The thickness of the portion newly formed by the secondary molding step is thinner than the thickness of the portion formed by the primary molding step. The method for manufacturing a magnetic treatment device according to claim 1 or 2, wherein, in the primary molding step, the primary elongated body is molded in the following manner: On the upper surface of the primary elongated body, a line from the primary Two or more first magnets protruding downward from the lower surface of the elongated body at a first distance and two or more first magnets protruding upward from the lower surface of the primary elongated body at a second distance shorter than the first distance The second magnet, and the two or more first magnets are arranged on the upper surface of the primary elongated body at approximately regular intervals along the longitudinal direction of the primary elongated body. The method of manufacturing a magnetic treatment device according to claim 3, wherein the first magnet has a stronger magnetic force than the second magnet. The method for manufacturing a magnetic treatment device according to claim 1 or 2, wherein the plurality of magnets includes two or more strong magnets having a relatively strong magnetic force and two or more weak magnets having a relatively weak magnetic force. In the one molding step, The primary elongated body is molded such that the two or more strong magnets are arranged on the upper surface of the primary elongated body at substantially equal intervals in the longitudinal direction.