JP2020039471A - Weak current tool - Google Patents

Abstract

To provide a weak current tool that provides a simple structure and an electrode structure made from normal material, makes treatment/cosmetic effects to be easily acquired, and is user-friendly.SOLUTION: A weak current tool includes an action part to be used in contact with a skin. The action part includes: a base; two electrode parts of a positive electrode part and negative electrode part that are made from metal and have an electric potential difference therebetween; an electric conduction part on which the electrode parts are mounted; and an insulation part made from insulating material. On a skin contact surface of the action part, the insulation part includes a first insulating part that covers, from above, edges of the electrode parts mounted on the electric conduction part and covers, from above, an adjacent part of the electric conduction part adjacent to the edges of the electrode parts.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a weak current device for passing a weak current to the skin or the like.

  2. Description of the Related Art Therapy for promoting health by applying a weak electric current to human skin (skin) is widely performed. It is said that by giving an appropriate weak current to the human body, the natural healing power of humans is enhanced. As a treatment method focusing on this, there is microcurrent therapy. In microcurrent therapy, the generation of an ATP (adenosine triphosphate) enzyme necessary for repairing a wound and the synthesis of a protein are promoted by artificially applying a weak current from the outside. Microcurrent therapy is said to be particularly effective in treating trauma.

  It is not intended to treat trauma, but by applying a weak current to the human skin, the bioelectricity that flows naturally in the human body is adjusted, and the ionic arrangement of human cell tissues is adjusted. It is also widely used to prevent and cure diseases. As such a weak current treatment device, various weak current generators have been developed and commercialized.

  Patent Document 1 discloses that a metal electrode having a higher potential than a standard unipolar potential is electrically connected to a semiconductor electrode having a lower potential than the standard monopolar potential, and the metal electrode and the semiconductor electrode are applied to human skin to generate a weak current. There is described a transdermal dosage element for flushing.

  In Patent Document 2, a piezoelectric body is provided in a plate shape on a substrate having elasticity and conductivity, and the substrate and the piezoelectric body are fixed to a human body surface with an adhesive sheet or a supporter, and a weak current is applied by applying pressure to the piezoelectric body. A weak current treatment device for supplying electricity to the skin is described.

Japanese Patent No. 2797118 JP 2006-320704 A

  The technique described in Patent Document 1 uses a metal electrode and a semiconductor electrode as electrodes. The semiconductor electrode can use only a limited material, and is more expensive than a general metal electrode.

  The technique of Patent Document 2 uses a piezoelectric body instead of using an electrode having a potential difference. Since the piezoelectric body generates an electromotive force when pressure is applied, it is necessary to apply pressure to the weak current treatment device of Patent Document 2. Since a weak current constantly flows for a long time, thereby producing an effect of adjusting a bioelectric current in a human body, a structure in which current flows only when pressure is applied may not provide a sufficient therapeutic effect.

  The object of the present invention has been made in view of the above problems, and provides a simple structure and an electrode structure using a usual material, and provides a faint current appliance that is easy to obtain a therapeutic / cosmetic effect and easy to use. It is in.

  In order to solve at least one of the above-described problems, a weak current device of the present invention is a weak current device having an action portion used in contact with the skin, wherein the action portion is made of a base and a metal, Two electrode portions of a positive electrode portion and a negative electrode portion having a potential difference from each other, a conductive portion on which the electrode portion is mounted, and an insulating portion made of an insulating material, including a skin contact surface of the working portion, A first portion covering the edge of the electrode portion placed on the conductive portion from above and covering an adjacent portion of the conductive portion adjacent to the edge of the electrode portion from above; Including insulation.

  Further, one of the positive electrode portion and the negative electrode portion also serves as the conductive portion, and the first insulating portion is mounted on the one electrode portion also serving as the conductive portion. The edge portion of the electrode portion may be covered from above, and an adjacent portion of one of the electrode portions may be covered from above.

  Further, the insulating portion includes the first insulating portion and a second insulating portion different from the first insulating portion, wherein the second insulating portion is located at an edge of the skin contact surface, (1) The insulating portion may be located at a position other than the edge of the skin contact surface.

  Further, the base may be substantially cylindrical, spindle-shaped, disk-shaped or spherical.

  Further, the weak current instrument may include a handle, and the base may be rotatably connected to the handle.

  Further, the electrode portion mounted on the conductive portion may have a band shape in plan view, and the first insulating portion may have a band shape in plan view.

  Further, the electrode portion mounted on the conductive portion has a substantially circular shape in plan view, an ellipse, a semicircle, or a polygonal shape, and the first insulating portion corresponds to the shape. It may have a shaped shape.

  Further, the electrode portion mounted on the conductive portion has a spherical shape, and the base has a receiving hole for receiving the spherical electrode portion, and the first insulating portion has a flat surface. It may be a visual ring.

  Further, one or both of the positive electrode portion and the negative electrode portion may have a rib shape, and the first insulating portion may be provided between the rib shapes.

  Further, the weak current instrument may include a plurality of the action units.

  ADVANTAGE OF THE INVENTION According to this invention, a simple structure and an electrode structure by a normal material are provided, and a therapeutic and cosmetic effect can be easily obtained, and an easy-to-use weak current device can be provided.

It is a perspective view which shows the weak electric current appliance of Embodiment 1. FIG. 3 is a diagram illustrating a configuration of an action section of the weak current instrument according to the first embodiment. It is for describing the weak current device of the first embodiment. FIG. 5 is a diagram illustrating another example of the action unit according to the first embodiment. FIG. 5 is a diagram illustrating another example of the action unit according to the first embodiment. It is a figure showing composition of a weak current instrument of Embodiment 1. FIG. 5 is a diagram illustrating another example of the action unit according to the first embodiment. It is a perspective view which shows the weak electric current appliance of Embodiment 2. FIG. 9 is a diagram for explaining an operation unit according to the second embodiment. FIG. 9 is a diagram for explaining an operation unit according to the second embodiment. FIG. 9 is a diagram for explaining an operation unit according to the second embodiment. FIG. 10 is a perspective view showing a weak current instrument according to a first modification of the second embodiment. FIG. 14 is a diagram for explaining an action section of a first modification of the second embodiment. FIG. 14 is a diagram for explaining an action section of a first modification of the second embodiment. FIG. 14 is a diagram for explaining an action section of a first modification of the second embodiment. It is a perspective view which shows the weak electric current appliance of the modification 2 of Embodiment 2. It is a figure for explaining the weak electric current appliance of the modification 2 of Embodiment 2. FIG. 14 is a diagram for explaining an action section of a second modification of the second embodiment. It is a perspective view which shows the weak electric current appliance of Embodiment 3. FIG. 14 is a diagram for explaining an operation unit according to the third embodiment. It is a perspective view which shows the weak electric current appliance of Embodiment 4. FIG. 14 is a diagram for explaining an operation unit according to the fourth embodiment. FIG. 14 is a diagram for explaining an operation unit according to the fourth embodiment. FIG. 15 is a diagram for explaining an action section of a first modification of the fourth embodiment. It is a perspective view which shows the weak electric current appliance of Embodiment 5. It is a figure for explaining an operation part of Embodiment 5. It is a figure for explaining an operation part of Embodiment 5. FIG. 14 is a diagram for explaining an action section of a first modification of the fifth embodiment. FIG. 14 is a diagram for explaining an action section of a first modification of the fifth embodiment. FIG. 21 is a diagram for explaining an action section of a second modification of the fifth embodiment. FIG. 21 is a diagram for explaining an action section of a second modification of the fifth embodiment. FIG. 21 is a diagram for explaining an action section of a second modification of the fifth embodiment. It is a figure for explaining other examples of the weak current instrument of the present application. It is a figure for explaining other examples of the weak current instrument of the present application. It is a figure for explaining other examples of the weak current instrument of the present application.

  An embodiment of the present invention will be described below with reference to the drawings. Note that components common to the following embodiments are denoted by the same reference numerals as those described above, and description thereof may be omitted. Also, when referring to the shape, positional relationship, etc. of components, etc., those that are substantially similar or similar to the shape, etc., unless otherwise specified, etc. Shall be included.

<First embodiment>
FIG. 1 shows an example of a weak current instrument 1 according to Embodiment 1 of the present invention.

  As shown in FIG. 1, the weak current instrument 1 has a handle portion 2 and an action portion 3. The handle portion 2 has a shape that is easy to grasp with one hand, and has a substantially L-shaped shape as a whole. The action part 3 is joined to the tip of the handle part 2. The action portion 3 has a plate-like shape, is fixed to the tip of the handle portion 2 on the back surface, and is used by pressing (contacting) the front surface (skin contact surface) against the skin when used. The planar shape of the action portion 3 can be any shape, but in the example of FIG. 1, it has a crescent shape. The crescent shape is suitable for hitting under the eyes or cheeks.

  The action portion 3 has a base portion 16 on the bottom surface (rear surface) and a conductive portion 4 on the front surface. On the conductive part 4, a positive electrode part 5 and a negative electrode part 6 are provided.

  The conductive portion 4 is a sheet-shaped member having conductivity. The conductive portion 4 only needs to have conductivity, and a metal sheet including an aluminum plate, a resin sheet including a metal film or a metal sheet, a conductor mixed with metal or carbon powder, or a resin mixed with conductive fibers. A sheet, a metal film, rubber provided with a metal sheet, or the like can be used. Also, a resilient material such as a sponge may be used. Further, the conductive portion 4 may be made of a rigid plate material and may also serve as the base 16. The conductive portion 4 is not limited to a plate, and is a concept including a net-like sheet or a lattice-like sheet.

  The positive electrode portion 5 and the negative electrode portion 6 are made of a metal having a potential difference, are electrically connected to the conductive portion 4, and are arranged apart from each other. There is at least one positive electrode part 5 and one negative electrode part 6 for each polarity, and it is desirable that at least two positive electrode parts 5 and negative electrode parts 6 are arranged alternately in positive and negative directions as a whole. The form of the positive electrode section 5 and the negative electrode section 6 may be a thin film or a thin metal piece. The positive electrode portion 5 and the negative electrode portion 6 may be formed by mixing a metal layer or metal particles formed on the conductive portion 4 by vapor deposition, sputtering, or plating with a binder.

  In addition, the conductive portion 4 does not necessarily have to be a flat surface, but forms a convex surface, and the positive electrode portion 5 and the negative electrode portion 6 are arranged along the curved surface, so that both electrode portions can easily touch the skin. . In addition, a local pressing effect can be expected by using a convex surface. Further, the conductive portion 4 may form a concave surface, and the positive electrode portion 5 and the negative electrode portion 6 may be arranged along the curved surface. Further, the base 16 may form a convex surface or a concave surface, and the conductive portion 4, the positive electrode portion 5, and the negative electrode portion 6 may be arranged along the curved surface.

  Further, by making the surfaces of both electrode portions convex or concave, or by giving a convex pattern pattern, it is possible to give a change in stimulus to the skin surface. Further, by providing a small convex portion on the surface of the large convex portion, it is possible to enhance fine adhesion to the unevenness of the skin.

  The height of the convex surface is from 0.2 mm to 5 mm, preferably from 0.3 mm to 3 mm in consideration of pores and skin.

  The size when the convex surface is provided with the convex surface is in the range of 0.2 mm to 3 mm, preferably 0.3 mm to 2 mm in consideration of pores and the like.

  An insulating section 7 is provided between the positive electrode section 5 and the negative electrode section 6. The insulating part 7 covers an exposed part of the conductive part 4 between the positive electrode part 5 and the negative electrode part 6. The insulating portion 7 is made of an insulator (material), and may be in the form of a sheet or tape, and may be a film or layer formed like a paint. The insulating unit 7 will be described in more detail with reference to FIG.

  FIG. 2A shows a cross section of the action section 3 of the weak current instrument 1. 2B and 2C are partially enlarged views of FIG. 2A.

  As shown in FIG. 2A, the action section 3 has a base 16 on the bottom surface, has a conductive section 4 thereon, and further has a positive electrode section 5 and a negative electrode section 6 thereon. . The positive electrode unit 5 and the negative electrode unit 6 are arranged alternately positively and negatively and separated from each other. The insulating part 7 covers an exposed part of the conductive part 4 between the positive electrode part 5 and the negative electrode part 6. For example, the covering widths d3 and d1 are 1 mm to 10 mm, preferably 2 mm to 8 mm. Furthermore, it extends to a predetermined position inside each foil at opposing edges of the foil constituting the positive electrode portion 5 and the foil constituting the negative electrode portion 6. Since the insulating portion 7 overlaps the edges of the positive electrode portion 5 and the negative electrode portion 6, it is possible to prevent a short-circuit current from flowing between the positive and negative electrode portions 5, 6 and the conductive portion 4.

  The width d4, d2 of the overlapping portion is, for example, 0.5 mm to 10 mm, preferably 1 mm to 5 mm.

  The insulating unit 7 includes a first insulating unit 710 and a second insulating unit 720 different from the first insulating unit 710. The second insulating unit 720 is located at the edge of the skin contact surface, and the first insulating unit 710 is located on the skin contact surface. It is located at a position other than the edge. As shown in FIG. 2B, the first insulating portion 710 includes a first covering portion 711 that covers the edge of the positive electrode portion 5 from above and a second covering portion that covers the edge of the negative electrode portion 6 from above. 712 and a third covering portion 713 that covers the exposed portion of the conductive portion 4 between the positive electrode portion 5 and the negative electrode portion 6 from above. The width of the first covering portion 711 and the second covering portion 712 is the width d4, and the width of the third covering portion 713 is d3. Here, the third covering portion 713 covers the entire exposed portion of the conductive portion 4 between the positive electrode portion 5 and the negative electrode portion 6 from above.

  As shown in FIG. 2C, the second insulating portion 720 includes a first coating portion 721 that covers the edge of the positive electrode portion or the negative electrode portion from above and a second coating that covers the exposed portion of the conductive portion 4 from above. A portion 722. The width of the first covering portion 721 is the width d2, and the width of the second covering portion 722 is d1. Here, the second covering portion 722 covers the entire exposed portion of the conductive portion 4 at the edge of the skin contact surface from above.

  As shown in FIG. 2A, since the positive electrode portion 5 and the negative electrode portion 6 have a potential difference, when they are applied to the skin, they form a battery circuit. That is, positive ions are ionized from the negative electrode unit 6, electrons move to the positive electrode unit 5, and a potential difference occurs between the positive electrode unit 5 and the negative electrode unit 6. Due to this potential difference, a weak current flows through the skin. Since this weak current is a small current, it enters the dermis layer of the skin without damaging the tissue on the surface of the skin, arranges the ionic arrangement of human cell tissues, has a cosmetic effect on the skin, If it works, it activates the human body's biological activities and has an effect on healing and preventing diseases.

  These are also referred to as dissimilar metal contact corrosion and local batteries, and the positive electrode portion 5 is also referred to as a cathode component. For example, gold (Au +), the atomic weight is 197.2, the standard electrode potential is +1.50 volts, and the negative electrode portion 6 is Also called an anode component, for example, aluminum (Al ++), atomic weight 26.97, standard electrode potential is -1.337 volts, zinc (Zn ++), atomic weight 65.38, standard electrode potential is -0.762 volt. . It is useful to appropriately select a metal that is easy to form on the conductive portion 4 and does not hinder the skin. Note that the above is an example, and when the metal itself is oxidized to form an oxide film like aluminum, the potential may be different from the standard electrode potential. Further, the amount of current generated differs depending on the arrangement interval between the two electrodes, the area of the electrodes, the degree of skin adhesion, the state, and the like.

  By providing small irregularities on the surface of each of these electrodes, the contact with the skin can be made smooth, the contact with the skin can be promoted, or the skin can be made uniform. The unevenness may be provided with, for example, a sandblast finish or a streak-like, net-like, or warp-like pattern.

  Since the positive electrode part 5 and the negative electrode part 6 are completely insulated, a short-circuit current between the positive electrode part 5, the negative electrode part 6, and the conductive part 4 is interrupted, and all of the current flows to the skin, thereby improving efficiency. A very weak current is used. Since the current generated by the potential difference between the positive electrode unit 5 and the negative electrode unit 6 is weak, it is important to use the current efficiently.

  Here, a biological battery that generates the above-described battery circuit will be described with reference to FIG.

  The biological battery 55 refers to a configuration in which a battery circuit is formed between the living body and the living body by coming into contact with the living body, and the conductive part 56, the positive electrode part 57, the negative electrode part 58, and the insulating parts 59 and 59 'are connected to each other. Have.

  The conductive portion 56 is made of a conductive material and electrically connects the positive electrode portion 57 and the negative electrode portion 58. As described above, for the conductive portion 56, a metal sheet, a resin sheet containing a metal film or a metal sheet, a resin sheet mixed with a conductor or conductive fiber, a rubber provided with a metal film or a metal sheet, or the like can be used. it can. The positive electrode portion 57 refers to a portion of the biological battery 55 that functions as a positive electrode. For the positive electrode portion 57, a metal, a conductor, or the like having a higher potential than the standard electrode potential can be used. The negative electrode portion 58 refers to a portion of the biological battery 55 that functions as a negative electrode. For the negative electrode portion 58, a metal, a conductor, or the like having a potential lower than the standard electrode potential can be used. The insulating portions 59 and 59 'may be any as long as they have an insulating property. For example, the insulating portions 59 and 59' may be made of an insulating member like the insulating portion 59 in FIG. It may be composed of a space like the part 59 '. However, the insulating portions 59 and 59 'insulate the positive electrode portion 57 and the negative electrode portion 58 such that the positive electrode portion 57 and the negative electrode portion 58 are separated from each other except for the conductive portion 56. The insulating portions 59 and 59 'are provided between the positive electrode portion 57 and the negative electrode portion 58 so that a short-circuit current does not flow between the positive electrode portion 57 and the negative electrode portion 58 and the adjacent conductive portion 56. And the conductive portion 56 are insulated.

  FIG. 3B shows a case where the insulating portion 59 'is formed of a space. In FIG. 3B, the positive electrode portion 57 and the negative electrode portion 58 protrude toward the skin surface direction (skin contact surface direction), that is, the direction of the human body 60, whereby the positive electrode portion 57 and the negative electrode portion 58 are formed. And a space is formed between them, and this space is an insulating portion 59 '.

  Here, for the positive electrode portion 57, a metal, a conductor, or the like having a higher potential than the standard electrode potential can be used. Although the negative electrode portion 58 is a portion having a potential lower than the standard electrode potential, it is sufficient that a potential difference occurs between the positive electrode portion 57 and the negative electrode portion 58.

  When the biological battery 55 having such a configuration is brought into contact with a living body, for example, a human body 60, the positive electrode portion 57 and the negative electrode portion 58 which are insulated by the insulating portions 59 and 59 'and separated from each other come into contact with the human body 60. Since the positive electrode portion 57 and the negative electrode portion 58 have a potential difference when they come into contact with the human body 60, electrons e− from the positive electrode 57 and positive ions + from the negative electrode 58 are simultaneously injected into the body. The injected electrons e- reduce ions in the body, and the positive ions + oxidize ions in the body. As a result, an ion current 62 is generated and flows through the body. It is considered that the ionic current 62 stimulates the body tissue to exert a healing effect as described above.

  As described above, the weak electric current device 1 can be expected to have an effect of adjusting a current in the body and an effect of stimulating and activating fiber cells. The skin covers the surface of the body, and the thickness of the epidermis and dermis is 0.6 mm to 3 mm, under which it is assumed that subcutaneous tissue, adipose tissue, nerves, blood vessels, muscles, bones, internal organs and the like are present. The skin has a barrier function, and the skin tissue tends to have high electrical resistance in the horizontal direction (epidermal direction) and low electrical resistance in the vertical direction (perpendicular to the skin). By providing the shortest distance (2 mm to 25 mm, preferably 3 mm to 15 mm) between the two electrodes above the thickness of the skin, the current can easily reach nerves, muscles, blood vessels and the like in the body.

  FIGS. 4A and 4B show a modification of the action section 3 in the weak current instrument 1 of FIG.

  As shown in FIG. 4A, in the action section 3 a, the conductive section 4 is provided on the base 16, and the negative electrode section 6 a is disposed on the conductive section 4. The positive electrode section 5a is further provided on the negative electrode section 6a. The foil forming the negative electrode portion 6a preferably has an elongated shape, and the foil forming the positive electrode portion 5a is arranged so as to intersect with the foil forming the negative electrode portion 6a. A portion where the edge of the foil constituting the negative electrode portion 6a is joined to the conductive portion 4 and a portion where the edge of the foil constituting the positive electrode portion 5a is joined to the foil constituting the negative electrode portion 6a are insulating portions 7a. Covered by (insulated). The interval between the electrode portions can be determined by the insulating portion 7a.

  The polarities of the electrode portions may be opposite. That is, the positive electrode section 5a may be disposed on the conductive section 4, and the negative electrode section 6a may be disposed thereon.

  Since the joining portion of the edge of the foil constituting the positive electrode portion 5a and the edge portion of the foil constituting the negative electrode portion 6a is insulated, the potential difference between the positive electrode portion 5a and the negative electrode portion 6a as an electrode portion upon contact with the skin is obtained. And a battery circuit can be formed. As described above, a weak current is generated by the battery circuit, and various effects can be exerted on the human body.

  As shown in FIG. 4B, the positive electrode portion 5a may be attached with a conductive adhesive 8a (including an adhesive or the like). This makes it easy to manufacture, and also allows the adhesive to have electrical resistance to prevent overcurrent.

  FIG. 5A shows a modified example of the action section 3 in the weak current instrument 1 of FIG. FIGS. 5B and 5C are partially enlarged views of FIG. 5A.

  In this modification, a part of the conductive part 4 is formed as a negative electrode part 6b.

  For example, the conductive portion 4 can be made of zinc and gold can be used for the positive electrode portion, while the zinc of the conductive portion 4 can be used as it is to form the negative electrode portion 6b. By using a part of the conductive portion 4, it is not necessary to newly form the negative electrode portion 6b. Aluminum, titanium, or the like may be used for the conductive portion 4.

  Also, by covering the periphery of the conductive portion 4 (negative electrode portion 6b) with the insulating portion 7b to prevent leakage of current from the periphery, it is possible to prevent an increase in current from the corner due to the peripheral corner pressure on the skin. ing.

  As shown in FIG. 5B, the first insulating portion 710b includes a first covering portion 711b that covers the edge of the positive electrode portion 5b from above, and a positive electrode portion 5b of the conductive portion 4 (the negative electrode portion 6b). And a second covering portion 712b that covers an adjacent portion from above. Further, as shown in FIG. 5C, the second insulating portion 720b covers the edge of the conductive portion 4 (negative electrode portion 6b) from above the first covering portion 721b and the edge of the base 16 from above. A second covering portion 722b.

  In addition, the positive electrode portion 5b is configured to have, for example, a silver (Ag +) atomic weight of 107.88, a standard electrode potential of +0.799 volts, or a copper (Cu ++) atomic weight of 63.54, and a standard electrode potential of +0.345 volts. This makes it unnecessary to form a new positive electrode portion 5b by covering the positive electrode portion with the conductive portion 4.

  The potential difference between the positive and negative electrode portions can be adjusted by appropriately mixing other metals with the metal of each of these parts to form an alloy. For example, as a dental material, there is a gold-palladium alloy (gold 12%, silver 46%, palladium 20%, copper 20%, etc.). The potential difference may be changed by changing the ratio of these alloys.

  FIG. 6 is an exploded view of the action part of the weak current instrument according to Embodiment 1 of the present invention.

  The action portion in FIG. 6 is such that the action portion a can be replaced with the base portion 16. The action portion a has an electrode sheet 9 in which a conductive portion, positive and negative electrode portions, and an insulating portion are thinly formed as shown in FIGS. 2, 4 and 5, for example. A moisturizing sheet 10 is provided on the skin contact surface of the electrode sheet 9 (the surface where the electrode portion is exposed). A release paper 11 is provided on the upper surface of the moisturizing sheet 10.

  A buffer 13 is provided on the surface of the electrode sheet 9 opposite to the electrode surface via an adhesive layer 12. An adhesive layer 14 is provided below the cushioning material 13. A release paper 15 is provided further below the adhesive layer 14. Since the action portion a has the release papers 11 and 15, it can be conveniently stored and sold as a replacement part. Further, the release portion 15 allows the action portion a to be detachably attached to the base portion 16. When mounting, the release paper 15 can be peeled off and attached to the base 16 via the adhesive layer 14.

  When used, the release paper 11 is peeled off, and the electrode sheet 9 is applied to the skin via the moisturizing sheet 10. The moisturizing sheet 10 has conductivity, adheres to the skin, and can transmit the weak current of the electrode sheet 9 to the skin. Thereby, the effects as described above can be obtained.

  FIG. 7 shows the front surface (skin contact surface) of the action section 3c according to another example of the first embodiment.

  The action portion 3c has a foil constituting the elongated positive electrode portion 5c and a foil constituting the negative electrode portion 6c on a conductive plate (not shown). Each of the positive electrode portion 5c and the negative electrode portion 6c has at least one electrode portion for each polarity, and at least two electrode portions as a whole are arranged alternately in parallel with each other.

  An insulating portion 7c is disposed on the positive electrode portion 5c and the negative electrode portion 6c, and the insulating portion 7c has an opening 17. The openings 17 are arranged in a row in a direction orthogonal to the foil forming the positive electrode portion 5c and the foil forming the negative electrode portion 6c, and viewed in a direction orthogonal to the positive electrode portion 5c and the negative electrode portion 6c. The positive electrode exposed portions 18 and the negative electrode exposed portions 19 are alternately exposed through the openings 17.

  In addition, you may form the positive electrode exposure part 18 and the negative electrode exposure part 19 by another method. That is, the portion between the positive electrode portion 5c and the negative electrode portion 6c is sealed with an elongated sheet-shaped insulating portion 7c, and the foil constituting the positive electrode portion 5c and the foil constituting the negative electrode portion 6c are orthogonal to each other. Thus, the positive electrode exposed portion 18 and the negative electrode exposed portion 19 may be formed in a lattice shape by sticking the elongated sheet-shaped insulating portion 7c.

  Although the shape of each electrode exposed portion is a square here, it may be a circle, an ellipse, a rectangle, a polygon, or the like. Further, the shape may be a convex surface such as a spherical surface instead of a flat surface. Further, the convex surface may indicate a pattern.

<Embodiment 2>
FIG. 8 shows an example of the weak current appliance 1d according to the second embodiment. 9 to 11 are diagrams for explaining the action section 3d. The weak current appliance 1d has a handle 2d and an action portion 3d.

  The handle part 2d includes a grip part 210d that is a part that is gripped by hand, and a holding part 220d that is a part that holds the action part 3d. The illustrated handle portion 2d is substantially L-shaped as a whole, with the grip portion 210d and the holding portion 220d forming a predetermined angle. Here, Y, which is the gripping direction of the user in the entire direction of the grip portion 210d, and the holding direction X, which is the direction in which the holding portion 220d extends, are substantially perpendicular. The holding portion 220d is provided with a holding shaft 221d at the tip. The action portion 3d is rotatably connected to the holding shaft 221d.

  As an example, the base 16d of the action portion 3d has a columnar shape as illustrated. The base 16d has a holding hole 161d that penetrates the center of the columnar shape. The holding shaft 221d is fitted into the holding hole 161d, and the base 16d or the action portion 3d is connected to the handle 2d.

  The action portion 3d may include a stopper 310d detachable from the holding shaft 221d. After connecting the action portion 3d to the holding shaft 221d, the stopper 310d is attached to the tip of the holding shaft 221d, so that the action portion 3d can be prevented from coming off the holding shaft 221d.

  The action portion 3d includes a positive electrode portion 5d, a negative electrode portion 6d, and an insulating portion 7d provided on a surface (outer peripheral surface) on the outer periphery of the base portion 16d, and the negative electrode portion 6d also serves as a conductive portion. In each of the following embodiments and modifications thereof, an example will be described in which the negative electrode portion also serves as the conductive portion. However, the positive electrode portion may be configured to also serve as the conductive portion.

  As an example, each of the positive electrode portion 5d, the negative electrode portion 6d, and the insulating portion 7d is provided so as to surround the outer periphery of the base portion 16d in a band shape. Here, an example is shown in which one negative electrode portion 6d is provided in a band shape substantially at the center of the outer peripheral surface, and one positive electrode portion 5d is overlapped at the approximate center thereof. May be an appropriate number in consideration of the width of the negative electrode portion 6d in the X direction and the like. In addition, a plurality of negative electrode portions 6d may be provided. In this case, the number of the positive electrode portions 5d is the same, and the negative electrode portions 6d are superimposed substantially at the centers of the respective negative electrode portions.

  An example of a process of forming the action portion 3d will be described with reference to FIG. First, a zinc plate (foil or the like) is adhered to the base 16d in FIG. 9A to form the negative electrode portion (layer) 6d in FIG. 9B. Next, gold (or silver, platinum, platinum rhodium, or the like) foil or the like is stuck on the negative electrode portion 6d in FIG. 9B to form the positive electrode portion 5d in FIG. 9C. Finally, an insulator (insulating film or the like) is attached so as to cover the boundary 301d between the positive electrode portion 5d and the negative electrode portion 6d and the boundary 302d between the negative electrode portion 6d and the base portion in FIG. 9C from above. By attaching, the insulating part 7d of FIG. 9D is formed. The provision of the insulating portion 7d prevents the boundary 301d and the boundary 302d from directly contacting the skin.

  The negative electrode portion 5d may be formed by plating a part or the whole of the outer peripheral surface of the base portion 16d. Further, the positive electrode portion 6d may be formed by plating the negative electrode portion 5d. Further, the insulating portion 7d may be formed by printing and applied.

  Here, by adjusting the width of the insulating portion 7d, the distance between the two electrode portions can be adjusted. For example, when a weak current instrument is used in contact with the face, the face is a thin part of the skin and the subcutaneous tissue is not thin, so that the shortest distance between both electrode parts is set to be equal to or greater than the thickness of the skin (for example, (1 mm to 13 mm, preferably 2 mm to 8 mm), and the current can be sufficiently delivered to the skin, nerves, muscles, blood vessels, and the like in the body.

  FIG. 10 is a cross-sectional view showing an example of the action section 3d when the negative electrode section 6d is formed by pasting or the like. The first insulating portion 710d includes a first covering portion 711d that covers the edge of the positive electrode portion 5d from above over the boundary 301d and an edge of the boundary or the positive electrode portion 5d of the negative electrode portion 6d that is a conductive portion. And a third covering portion 713d that covers an adjacent portion, which is a portion adjacent to the third portion, from above. Since the negative electrode portion 6d is a lower layer (lower) and the positive electrode portion 5d is an upper layer (upper), the first covering portion 711d is a portion that covers the edge of the upper layer from above, and the third covering portion 713d is a lower layer. It can also be said that it is a part that covers the adjacent part from above. As illustrated, the first insulating portion 710d has a stepped shape in cross section.

  The second insulating section 720d includes a first covering section 721d that covers the edge of the negative electrode section 6d from above and a second covering section 722d that covers the base section 16d from above, across the boundary 302d. Since the base portion 16d is a lower layer (lower) and the negative electrode portion 6d is an upper layer (upper), the first covering portion 721d is a portion covering the upper layer from above, and the second covering portion 722d is a portion covering the lower layer from above. It can also be said. As illustrated, the insulating portion 720d has a step shape.

  The width d4 of the first covering portion 711d of the first insulating portion 710d and the width d2 of the first covering portion 721d of the second insulating portion 720d may be the same width or different widths. The width d3 of the third covering portion 713d of the first insulating portion 710d and the width d1 of the second covering portion 722d of the second insulating portion 720d may be the same width or different widths. The widths d4 and d2 are, for example, 0.5 mm to 10 mm, and the widths d3, d1 are 0.5 mm to 10 mm.

  FIG. 11 is a cross-sectional view showing an example of the action portion 3d when the negative electrode portion 6d is formed by plating. As shown in the figure, when plating is performed on the entire outer peripheral surface of the base 16d, there is no boundary 302d between the negative electrode portion 6d and the base 16d on the outer peripheral surface, so that it is not necessary to provide the second insulating portion 720d. Since the first insulating portion 710d is the same as described above, the description is omitted here.

  The weak electric current device 1d is configured such that the columnar base 16d is rotatable and an operation portion is provided thereon, so that the operation portion is rotatable. The weak current appliance 1d can smoothly contact a wide area of the human body by rolling. Also, a massage effect can be obtained.

  In the above description, the example in which the negative electrode portion 6d also serves as the conductive portion has been described, but the negative electrode portion may be provided separately from the conductive portion. In this case, the conductive part is disposed on the base, and the negative electrode part and the positive electrode part are disposed on the conductive part. Therefore, the first insulating part is installed so as to cover both the conductive part and the negative electrode part and the conductive part and the positive electrode part. A second insulating portion covering the base between the base and the conductive portion may be provided.

<Modification 1 of Embodiment 2>
FIG. 12 shows an example of the weak current appliance 1e according to the first modification of the second embodiment. FIG. 13 to FIG. 15 are diagrams for explaining the action section 3e. The weak current appliance 1e has a handle 2e and an action portion 3e.

  The handle portion 2e has a substantially Y-shape as a whole. The holding part 220e includes two holding arms 230e that branch and extend from the tip of the grip part 210e. Although not shown, holding shafts extending toward the mating direction are provided at the tips of the two holding arms 230e, respectively. The gripping direction of the grip portion 210e and the holding direction in which the holding axis extends extend substantially perpendicularly. The action section 3e is rotatably connected to the two holding arms 230e.

  As an example, the base 16e of the action portion 3e has a substantially spindle shape as illustrated. The base 16e has a holding hole that penetrates the center of the spindle shape, and two holding shafts are fitted into the holding holes, and the base 16e or the action portion 3e is connected to the handle 2d. The action section 3e may include two stoppers 310e. By supporting both ends of the base 16e with the stopper 310e, the connection with the holding shaft is facilitated and strengthened. Further, it is possible to apply force stably and to apply pressure on average.

  The action section 3e further includes a positive electrode section 5e, a negative electrode section 6e, and an insulating section 7e, and the negative electrode section 6e also serves as a conductive section. The process of forming the action portion is the same as described above, and the description is omitted here.

  FIG. 13 is a cross-sectional view illustrating an example of the action section 3e. Since the first insulating section 710e is the same as the above-described insulating section 710d, the description is omitted here.

  FIGS. 14A and 14B are cross-sectional views showing another example of the action section 3e. As shown in FIG. 14A, the base 16e may be provided with a rib 162e protruding from the outer peripheral surface in parallel with the installation direction of the positive electrode portion and the insulating portion. In other words, the rib 162e is provided on the outer peripheral surface of the base 16e so as to protrude in the circumferential direction. Since the negative electrode portion 6e is provided on the outer peripheral surface of the base portion 16e by plating or the like, the negative electrode portion 6e covers the surface of the rib 162e. In other words, the negative electrode portion 6e is defined by the convex portions. The positive electrode portion 5e is provided in a region defined by the rib 162e, here between the rib shapes. Therefore, the boundary 301e between the positive electrode section 5e and the negative electrode section 6e is also located in the partitioned area, and the first insulating section 710e is also set in the same area. Note that the rib shape may be provided not on the base but on the negative electrode portion 6e itself. For example, a metal member such as a titanium member or a stainless member may be used for the negative electrode portion 6e, and these metal members may be provided with a rib shape.

  As shown in FIG. 14B, the positive electrode portion 5e may be formed in a rib shape. Also, a rib 165e, which is lower than the rib 162e, is provided on the base 16e, and the positive electrode portion 5e is overlapped with the negative electrode portion on the rib 165e. It may be lower. In this case, the first insulating portion 710e includes, for example, a portion covering the edge of the rib shape of the positive electrode portion 5e and a portion covering the negative electrode portion up to the foot of the rib 162e. It may be installed.

  Note that, here, the rib shape may be protruded from the base portion, or the metal member used for the negative electrode portion may be formed by denting the portions other than the rib shape so that the large ribs and small ribs shown alternately appear. May be.

  FIG. 15 is a cross-sectional view showing another example of the action section 3e. As shown in the drawing, the positive electrode portion 5e may be formed such that the central portion thereof projects in a dome shape or a wart shape in a cross section. In other words, the positive electrode portion 5e may be formed so that the central portion protrudes and has a rib shape, and extends in the circumferential direction.

  In addition, in the action portion 3e, the conductive portion is formed independently of the negative electrode portion, and the negative electrode portion may have a rib shape like the positive electrode portion. Further, the cross-sectional shape of the central portion of the rib may be a square or triangular shape in plan view.

<Modification 2 of Embodiment 2>
FIG. 16 shows an example of a weak current instrument 1f according to a second modification of the second embodiment. FIG. 17 is a diagram for explaining another example, and FIG. 18 is a diagram for explaining an example of the action portion 3f. The weak current instrument 1f has a handle portion 2d, a plurality of action portions 3f, and an isolator 320f. Note that the weak current instrument 1f may include only the handle portion 2d and one operating portion 3f.

  The base 16f of the action portion 3f is substantially disc-shaped. The base 16f has a holding hole 161f that penetrates the center of the disk shape, and the holding shaft 221f is inserted through the holding hole 161f, and the base 16f or the action portion 3f is connected to the handle 2d.

  The action section 3f includes a positive electrode section 5f, a negative electrode section 6f, and an insulating section 7f, and the negative electrode section 6f also serves as a conductive section. As an example, the negative electrode portion 6f is provided in a loop shape so as to surround the base portion 16f in the circumferential direction, and the positive electrode portion 5f is superposed thereon. The positive electrode portion 5f is provided perpendicular to the circumferential direction, and is provided so as to cross the outer peripheral surface of the base portion 16f or the negative electrode portion 6f.

  The insulating portion 7f is provided so as to cover, from above, a boundary 301f caused by the positive electrode portion 5f being overlaid on the negative electrode portion 6f so as to cross the negative electrode portion 6f. The insulating portion 7f includes a first covering portion covering an edge of the positive electrode portion 5f and a third covering portion covering an adjacent portion of the negative electrode portion 6f which is a conductive portion so as to cross the negative electrode portion 6f. Is provided.

  Thereby, the action portion 3f is distributed in a belt shape (along a disk-shaped thickness) in which the positive and negative electrode portions and the insulating portion are perpendicular to the circumferential direction on the outer peripheral surface that is the skin contact surface.

  The action section 3f may be provided with an installation groove. 17 and 18 are views for explaining an example in which the installation groove is provided in the weak current instrument 1f. FIG. 17 omits the electrode section and the like, and FIG. 18 shows the electrode section and the like.

  As shown in the drawing, the installation groove 163f is recessed on the outer peripheral surface of the base 16f. The installation groove 163f is provided so as to cross the outer peripheral surface of the base 16f perpendicularly to the circumferential direction. In other words, the installation groove 163f is provided so as to cross the outer peripheral surface in the disk-shaped thickness direction. As will be described later, by providing the installation groove 163f, the installation positions of the positive electrode section, the negative electrode section, and the insulating section can be easily defined and the processing can be easily performed. Further, since a step is generated by the installation groove 163f, the massage effect is enhanced.

  An example of a process of forming the action portion 3e will be described with reference to FIG. First, a negative electrode portion (layer) 6f is formed by applying zinc plating, sputtering, vapor deposition, sticking, or the like to the base 16f of FIG. 18A. Here, since the installation groove 163f is provided in the base portion 16f, the negative electrode portion 6f has a shape including a hill portion between the groove portions.

  Next, gold (or silver, platinum, platinum rhodium, or the like) is masked, plated, sputtered, vapor-deposited, adhered, or the like to a predetermined hill portion of the negative electrode portion 6e in FIG. A portion 5f is formed. The positive electrode portions 5f are not provided on all the hill portions, but are provided, for example, every other one. Further, the positive electrode portion 5f may be provided so that both end portions are located on the hill portion, or may be provided so as to cover the groove portion as shown.

  Next, an insulator (insulating film, insulating layer, or the like) is attached to an edge portion of the positive electrode portion 5f and a groove portion of the negative electrode portion 6f in FIG. 18C, so that the first insulating portion 710f is formed. Is done. The first insulating portion 710f includes a first covering portion 711f that covers the end of the positive electrode portion 4f from above, a third covering portion 713f that covers a groove portion adjacent to the negative electrode portion that is also a conductive portion, and As shown in the figure, for example, it is provided in a V shape in cross section.

  The weak current instrument 1f is connected by inserting one operating portion 3f through the holding shaft 221f, then inserting the isolator 320f, inserting and connecting the other operating portion 3f, and further holding the stopper 310f. It is screwed to the tip of the shaft 221f to complete. In addition, it may be configured to include three or more action parts 3f and be separated by two or more separation tools 320f.

  By providing a plurality of action parts 3f, the weak current instrument 1f can simultaneously contact and work on a plurality of parts of the human body at a predetermined distance. In addition, by using the isolator, the interval between the action portions 3f can be easily adjusted. The plurality of action portions 3f may have different widths in the axial direction. Further, the plurality of isolation members 320f may have different widths in the axial direction. In the weak current instrument 1f, the position where the current is applied and the direction in which the current flows change as the positive electrode section and the negative electrode section alternately hit the skin surface by the rotation of the action section 3f. Thereby, it is possible to give a stimulus with a change to the skin.

<Embodiment 3>
FIG. 19 shows an example of the weak current instrument 1g according to the third embodiment. FIG. 20 is a diagram for explaining the action section 3g. The weak current instrument 1g has a handle portion 2g and an action portion 3g. The handle portion 2g is the same as the handle portion 2d, except that the holding shaft 221g also serves as the conductive portion 4g. At least a part of the holding shaft 221g also serves as the conductive portion 4g.

  The action section 3g includes a positive electrode section 5g, a negative electrode section 6g, an insulating section 7g, and an electrode section 4g (a holding shaft 221g). Each of the positive electrode portion 5g, the negative electrode portion 6g, and the insulating portion 7g is formed in a substantially disc shape, and holding holes 501g, 601g, and 701g are respectively provided at the center of the disc shape, and are inserted into the holding shaft 221g. Thereby, the action portion 3g becomes rotatable.

  The positive electrode portion 5g and the negative electrode portion 6g are formed by performing predetermined metal plating on a disk-shaped member. The positive electrode portions 5g and the negative electrode portions 6g are alternately arranged, and an insulating portion 7g is sandwiched between the two. The skin contact surface of the action portion 3g is constituted by the outer peripheral surfaces of the positive electrode portion 5g, the negative electrode portion 6g, and the insulating portion 7g.

  FIG. 20 is a diagram for describing a skin contact surface that is a contact surface of the action section 3g with a human body. As illustrated, the first insulating portion 710g of the insulating portion 7g includes a first covering portion 711g, a second covering portion 712g, and a third covering portion 713g. The third covering portion 713g is a disk-shaped main body portion. The first covering portion 711g and the second covering portion 712g are portions whose peripheral portions extend in the thickness direction. The first covering portion 711g and the second covering portion 712g cover the peripheral portions of the adjacent positive electrode portion 5g and negative electrode portion 6g from above, respectively. The positive electrode portion 5g and the negative electrode portion 6g may have chamfered peripheral portions and include chamfered portions 502g and 602g, respectively. In this case, the first covering portion 711g and the second covering portion 712g are formed in a triangular shape corresponding to the chamfered portions 502g and 602g in a sectional view.

  Also in the weak current instrument 1g, the boundary 301g between the positive electrode part 5g and the conductive part 4g and the boundary 301g between the negative electrode part 6f and the conductive part 4g are covered with the first insulating part 710g on the skin contact surface.

  The weak current instrument 1g does not include a common base, and the positive electrode portion 5g, the negative electrode portion 6g, and the insulating portion 7g are formed independently, so that replacement and adjustment can be performed individually. Further, the structure can be simplified by forming the holding shaft 221g as a conductive portion.

<Embodiment 4>
FIG. 21 shows an example of the weak current instrument 1h according to the fourth embodiment. FIG. 22 to FIG. 23 are diagrams for explaining the action section 3h. The weak current appliance 1h has a handle 2e and an action portion 3h.

  Since the base of the action portion 3h is the same as the base 16e, the description is omitted here.

  The operation section 3h includes a positive electrode section 5h, a negative electrode section 6h, and an insulating section 7h. As shown in the figure, the positive electrode portion 5h has a circular shape (or an elliptical shape) in plan view, and is provided at predetermined intervals on the negative electrode portion 6h which is also a conductive portion. The boundary 301h between the positive electrode portion 5h and the negative electrode portion 6h is circular (or elliptical) here, and the first insulating portion 710h covering the boundary 301h is annular. The first insulating portion 710h includes a first covering portion 711h that covers an edge (peripheral portion) of the positive electrode portion 5h, and a third covering portion 713h that covers an adjacent portion of the negative electrode portion 6e that is also a conductive portion.

  The insulating portion 7h may be formed by forming a ring-shaped recess in the positive electrode portion 5h, fitting a rubber material or a plastic material, or covering the surrounding negative electrode portion with a paint or an epoxy agent or the like.

  Although the illustrated positive electrode portion 5h is arranged in a ring shape on the negative electrode portion 6h, it may be set at random. Further, the positive electrode portion 5h may have a rectangular, triangular or polygonal shape in plan view. In this case, the insulating portion 7h is also formed to have a similar shape like a frame surrounding these shapes.

  Further, the positive electrode portion 5h may have a central portion protruding, and may be formed in, for example, a dome shape shown in FIG. Further, negative electrodes having a circular shape in plan view may be provided at predetermined intervals on the positive electrode which is also a conductive part.

<Modification 1 of Embodiment 4>
FIG. 24 shows a first modification of the fourth embodiment, in which the action section 3i is different.

  The action section 3i includes a conductive section, a positive electrode section 5i and a negative electrode section 6i provided on the conductive section, and an insulating section 7i. Here, not only the positive electrode portion 5i but also the negative electrode portion 6i have a circular shape (elliptical shape), and these are disposed on the conductive portion at predetermined intervals. The first insulating portion 710i of the insulating portion 7i includes a first covering portion 711i covering the edge of the positive electrode portion 5i from above, a second covering portion 712i covering the edge of the negative electrode portion 6i from above, and a positive covering portion 712i. And a third covering portion 713i that covers a conductive portion between the electrode portion 5i and the negative electrode portion 6i from above.

  As shown in FIG. 24, the insulating portion 7i is connected to the third covering portion 713i. In other words, the insulating portion 7i is formed as a single sheet having an opening 17i for exposing the central portions of the positive electrode portion 5i and the negative electrode portion 6i. Note that the positive electrode portion 5i and the negative electrode portion 6i may be rib-shaped members having a predetermined length and installed along the circumferential direction of the spindle shape. In this case, the opening 17i is formed in an elongated slit shape.

  Note that, as shown in FIG. 33, the positive electrode portion 5i and the negative electrode portion 6i may be rectangular, triangular, or polygonal in plan view. In this case, the opening 17i of the insulating portion 7i is also formed to have a similar shape so as to expose a central portion of these shapes.

<Embodiment 5>
FIG. 25 shows an example of the weak current instrument 1j according to the fifth embodiment. 26 and 27 are views for explaining the action part 3j, FIG. 26 is a view showing a part of the skin contact surface of the action part 3j, and FIG. 27 is a view showing a part of the cross section. The weak current instrument 1j has a handle portion 2e and an action portion 3j.

  The base portion 16j of the action portion 3j has, for example, a substantially spindle shape as illustrated, and is rotatably held by the handle portion 2e. The base 16j has a plurality of accommodation holes 164j on the outer peripheral surface. The accommodation hole 164j accommodates a spherical positive electrode portion 5j and a negative electrode portion 6j described later. The accommodation hole 164j is a bottomed hole having a predetermined depth, and is preferably circular in plan view. The accommodation hole 164j has a diameter larger than the diameter of the positive electrode portion 5j and a depth smaller than the diameter of the positive electrode portion 5j.

  The action portion 3j includes a conductive portion 4j, a positive electrode portion 5j, a negative electrode portion 6j, and an insulating portion 7j, and is provided so as to cover the surface of the base portion 16j, here the outer peripheral surface. The conductive portion 4j is disposed at the lowest position. The conductive portion 4j may be formed by plating a predetermined metal or the like so as to cover the outer peripheral surface of the base 16j as shown in the drawing, or the base 16j may be formed of a predetermined metal to make the base 16j conductive. It may also serve as the part 4j.

  As illustrated, the positive electrode portion 5j and the negative electrode portion 6j are spherical and are housed in the housing holes 164j. Hereinafter, the positive electrode unit 5j will be described as an example. Even when the receiving hole 164j is covered with the conductive portion 4j, the receiving hole 164j has a slightly larger diameter than the positive electrode portion 5j. For this reason, an annular gap is formed around the positive electrode portion 5j between the positive electrode portion 5j and the housing hole 164j, and a sakai 301j is formed between the positive electrode portion 5j and the conductive portion toward the skin contact surface. In addition, since the diameter of the positive electrode portion 5j is larger than the depth of the accommodation hole 164j, a part thereof is exposed from the accommodation hole 164j to form a convex portion on the skin contact surface. As shown in FIG. 26, the positive electrode portion 5j and the negative electrode portion 6j may be provided alternately in two rows in the circumferential direction of the base portion, or may be provided as a pair at a predetermined distance and randomly. .

  The first insulating portion 710j includes a first covering portion 711j that covers the edge of the exposed portion from the receiving hole 164j of the positive electrode portion 5j and an edge of the exposed portion from the receiving hole of the negative electrode portion 6j on the skin contact surface. And a third covering portion 713j covering an exposed portion of the conductive portion between the positive electrode portion 5j and the negative electrode portion 6j. In other words, the first insulating portion 710j is formed so as to cover from above the Sakai 301j between the positive electrode portion 5j and the conductive portion 4j and the Sakai 302j between the negative electrode portion 6j and the conductive portion 4j. To avoid contact with

  The first covering portion 711j contacts and surrounds a predetermined position on the outer periphery of the positive electrode portion 5j. The first covering portion 711j has a shape corresponding to the shape of the portion exposed from the accommodation hole 164j of the positive electrode portion 5j, and is annular here. The first covering portion 711j has an inner diameter smaller than the diameter of the positive electrode portion 5j, and has a substantially triangular or trapezoidal cross section. While the third covering portion 713j is fixed to the conductive portion 4j, the first covering portion 711j is free. The first covering portion 711j holds the positive electrode portion 5j so that the positive electrode portion 5j rotates in the accommodation hole 164j while maintaining the connection with the conductive portion 4j, and does not come out of the accommodation hole 164j. The same applies to the second covering portion 712j.

  The first insulating portion 710j has a planar shape having a plurality of openings 17j, and is arranged along the outer peripheral surface of the base 16j or the conductive portion 4j.

  The base 16j may have a configuration that does not rotate, and may have a plate shape or the like.

<Modification 1 of Embodiment 5>
28 to 29 are views showing an action section 3k according to Modification 1 of Embodiment 5, FIG. 28 is a view showing a part of a skin contact surface, and FIG. 29 is a view showing a part of a cross section.

  The action section 3 includes a positive electrode section 5k, a negative electrode section 6k, and an insulating section 7k, and the negative electrode section 6k also serves as a conductive section. The negative electrode portion 6k is formed by plating a predetermined metal on the entire or a part of the base portion 16j so as to cover the outer peripheral surface thereof. The accommodation hole 164j is covered by the negative electrode portion 6k. The positive electrode portion 5k is rotatably accommodated in an accommodation hole 164j covered by the negative electrode portion 6k.

  The first insulating portions 710k of the insulating portion 7k are provided by the number of the positive electrode portions 5k, and are provided annularly so as to surround the exposed portions of the positive electrode portions 5k exposed from the accommodation holes 164j in plan view.

  The first insulating portion 710k includes a first covering portion 711k that covers an edge of an exposed portion of the positive electrode portion 5k from the receiving hole, a third covering portion 713k that covers an adjacent portion of the negative electrode portion 6k, and a receiving hole 164j. A fourth covering portion 714k that covers at least a part of the peripheral wall portion. The first insulating portion 710k is formed so as to cover the sakai 301j between the positive electrode portion 5k and the negative electrode portion 6k from above, so as not to contact the skin.

  The first insulating portion 710k has a substantially T-shaped cross section. More specifically, the first covering portion 711k and the third covering portion 713k are formed as horizontal portions along the peripheral surface (surface) of the base portion 16j, and a portion between the first covering portion 711k and the third covering portion 713k is provided. The fourth covering portion 714k extends substantially perpendicularly to the peripheral surface and is formed as a vertically provided portion. In the first insulating portion 710k, the third covering portion 713k is firmly adhered to a portion adjacent to the negative electrode portion 6k on the peripheral surface of the base portion 16j by bonding or the like, and the fourth covering portion 714k is released or fixed to the peripheral wall portion of the accommodation hole 164j. , And the first covering portion 711k is in contact with the positive electrode portion 5k in a loose state. The fourth covering portion 714k can avoid friction between the positive electrode portion 5k and the peripheral wall of the housing hole 164k.

<Modification 2 of Embodiment 5>
FIG. 30 to FIG. 32 are views showing the action section 3m according to another example, and are views showing a part of the cross section. The base 16m of the action section 3m is plate-shaped.

  The action section 3m includes a conductive section 4m, a positive electrode section 5k, a negative electrode section 6k, and an insulating section 7m, and is provided so as to cover the surface of the base 16m.

  As shown in FIG. 30, the conductive portion 4m is disposed at the lowest position except for the base. The conductive portion 4m may be formed by plating a predetermined metal so as to cover the surface of the base 16m, the base 16m may be entirely formed of a predetermined metal, or the base 16m may be formed of a predetermined metal. The conductive portion 4m may be formed of metal. The conductive portion 4m includes a protrusion 401m protruding in the skin contact surface direction. The protrusion 401m may be formed by plating the protrusion on the base 16m, or may be a protrusion provided on the conductive portion 4m itself. The protrusions 401m are provided in the same number as the total number of the positive electrode portion 5k and the negative electrode portion 6k.

  As shown in FIG. 31, the conductive portion 4m may have a rod shape whose both ends are bent at substantially right angles. In this case, the conductive portion 4m may be configured such that the main body portion is disposed in a groove provided in the base 16m, and both ends formed by bending are protruded from the base 16m to form the protrusion 401m.

  As shown in FIG. 32, the conductive portion 4m may be provided with a coil spring or a leaf spring at the tip of the protrusion 401m.

  In the action section 3m, a receiving hole for receiving the positive electrode section 5k and the negative electrode section 6k is formed in the first insulating section 710m. The first insulating portion 710m includes a first covering portion 711m covering an edge portion of the positive electrode portion 5k on the skin contact surface, a second covering portion 712m covering an edge portion of the negative electrode portion 6k, a positive electrode portion 5k, and a negative electrode. A third covering portion 713m covering the exposed portion of the conductive portion between the second covering portion 6k, a fifth covering portion 715m which is a half-hole portion for accommodating the positive electrode portion 5m, and a third covering portion 715m for accommodating the negative electrode portion 6m. And a sixth covering portion 716m that is a half-hole portion. In the example shown in FIG. 31, the third covering portion 713m covers both the exposed portion of the conductive portion and the exposed portion of the base between the positive electrode portion 5k and the negative electrode portion 6k.

  An accommodation hole for accommodating the positive electrode portion 5k is formed by the fifth covering portion 715m between the adjacent first insulating portions 710m, and an accommodation hole for accommodating the negative electrode portion 6k is formed by the fifth covering portion 715m between the adjacent first insulating portions 710m. 6 formed by 716 m. Hereinafter, the fifth covering portion 715m will be described as an example. The fifth covering portion 715m includes a semi-bottom portion having a predetermined thickness having a substantially semicircular shape in plan view and having an arc-shaped notch in the center, and a semicircular wall portion in semicircular shape in plan view. The bottom portions of the positive electrode portion 5k are formed by the half bottom portions, and the peripheral wall portions are formed by the half peripheral wall portions. The projection 401m is arranged between the adjacent semicircular notches at the half bottom. The first covering portion 711m is formed at the upper end of the semi-peripheral wall portion, and the third covering portion is formed between adjacent half bottom portions. As a result, the positive electrode portion 5k and the negative electrode portion 6k are entirely lifted from the conductive portion or the base to a higher position by the first insulating portion 710m, and are arranged floating therefrom.

  The working portion 3m is provided with an accommodating hole for accommodating the spherical positive electrode portion 5k and the negative electrode portion 6k in the insulating portion, so that portions other than the insulating portion have a simple structure and can be manufactured at low cost. Further, it is easy to replace the positive electrode portion 5k and the negative electrode portion 6k with appropriate sizes.

  In the present application, some of the components in the above-described embodiment (example) may be combined with all or some of the other embodiments (example). Further, as shown in FIG. 33, the handle may include a dome-shaped grip and a plurality of columnar holding arms having a holding shaft. In this case, the action portion may be one in which the action portion is provided on a spherical or elliptical base. The positive and negative electrode portions may be hexagonal in plan view, or may be other polygons. The grip portion may be provided with a holding portion for hanging a finger. Further, as shown in FIG. 34, the grip portion of the handle portion may be a straight rod, a holding shaft may be provided on an extension of the grip portion, and the base 16 may be rotatably connected to the holding shaft. Further, as shown in FIG. 35, the handle portion is connected to a rod-shaped grip portion, a Y-shaped holding portion having a branched tip is connected, and two base portions 16 are attached to the two branched tips of the holding portion. It may be rotatably mounted at a predetermined angle.

  Incidentally, based on the above description, those skilled in the art may be able to conceive additional effects and various modifications of the present invention, but aspects of the present invention are not limited to the above-described embodiments. . Various additions, changes, and partial deletions can be made without departing from the concept and spirit of the present invention derived from the contents defined in the claims and equivalents thereof.

Weak current device: 1, 1d, 1e, 1f, 1g, 1h, 1i
Handle part: 2, 2d, 2e, 2g
Working part: 3, 3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h, 3i, 3j, 3k, 3m
Sakai: 301, 301d, 301e, 301g, 301h, 301j
Conductive part: 4, 56, 4g, 4j, 4m
Positive electrode part: 5, 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h, 5i, 5j, 5k
Negative electrode part: 6, 6a, 6b, 6c, 6d, 6e, 6f, 6g, 6h, 6i, 6j, 6k
Insulating part: 7, 7a, 7b, 7c, 7e, 7f, 7g, 7h, 7i, 59, 59 '
First insulating portion: 710, 710b, 710d, 710e, 710f, 710g, 710h, 710i, 710j, 710k, 710m
Second insulating part: 720, 720b, 720d
Base: 16, 16d, 16e, 16f, 16j, 16m
Rib: 162e
Groove: 163f
Housing hole: 164j
Opening: 17, 17i

Claims (10)

A weak current instrument having an action portion to be used in contact with the skin,
The action section,
The base,
Two electrode portions made of metal and having a potential difference from each other, a positive electrode portion and a negative electrode portion,
A conductive portion on which the electrode portion is mounted,
An insulating portion made of an insulating material;
On the skin contact surface of the working portion, the insulating portion covers an edge of the electrode portion placed on the conductive portion from above, and is adjacent to the conductive portion adjacent to the edge of the electrode portion. A weak current device comprising a first insulating portion covering the portion from above. The weak current device according to claim 1,
One of the positive electrode portion and the negative electrode portion also serves as the conductive portion,
The first insulating portion covers an edge portion of the other electrode portion mounted on the one electrode portion also serving as the conductive portion from above, and raises an adjacent portion of the one electrode portion. Weak current appliances characterized by being covered from The weak current instrument according to claim 1 or 2,
The insulating unit includes the first insulating unit and a second insulating unit different from the first insulating unit,
The second insulating portion is located at an edge of the skin contact surface,
The weak current appliance, wherein the first insulating portion is located at a position other than an edge of the skin contact surface. It is a weak current appliance according to any one of claims 1 to 3,
The weak current device, wherein the base is substantially cylindrical, spindle-shaped, disk-shaped or spherical. The weak current instrument according to claim 4,
The weak current device includes a handle portion,
The weak electric current device, wherein the base is rotatably connected to the handle. It is a weak electric current appliance as described in any one of Claims 1-5,
The electrode portion mounted on the conductive portion has a band shape in plan view,
The weak current appliance, wherein the first insulating portion has a band shape in a plan view. It is a weak electric current appliance as described in any one of Claims 1-5,
The electrode portion placed on the conductive portion, a substantially circular shape in plan view, an ellipse, a semicircle, or a polygonal shape,
The said 1st insulating part is a shape corresponding to the said shape, The weak electric current appliance characterized by the above-mentioned. It is a weak electric current appliance as described in any one of Claims 1-5,
The electrode portion mounted on the conductive portion is spherical,
An accommodation hole for accommodating the spherical electrode portion is provided in the base portion,
The weak current appliance, wherein the first insulating portion is annular in plan view. It is a weak electric current appliance as described in any one of Claims 1-5,
One or both of the positive electrode portion and the negative electrode portion are rib-shaped,
The weak current appliance, wherein the first insulating part is installed between rib shapes. It is a weak electric current appliance according to any one of claims 1 to 9,
The weak current device includes a plurality of the action units.

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