JP2018183731A - Vibration device and electric massage device using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration device having a simple structure and an electric massage device using the vibration device.SOLUTION: An electric massage device (1) performs operation by receiving AC current or DC current. The electric massage device (1) includes: a cylindrical member (20) made of a nonmagnetic substance; a coil (21) arranged on an outer peripheral surface of the cylindrical member (20) to receive AC current or DC current; a spherical magnet (22) housed inside the cylindrical member (20) to be movable along the extension direction of the cylindrical member (20); and a pair of repulsive members (23, 24) arranged at both end parts in the extension direction of the cylindrical member (20) to give repulsive force to the spherical magnet (22).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vibration device that operates by being supplied with an alternating current or a direct current, and an electric massage machine using the vibration device.

  Generally, as a vibration device, a motor type that generates vibration by rotating an eccentric weight fixed to a motor shaft, an air pressure type using a ball vibrator, or a piston type using a reciprocating motion is known. ing.

  Examples of piston-type vibration devices include Patent Document 1 (Japanese Patent Laid-Open No. 2003-188012) and Patent Document 2 (Japanese Patent Laid-Open No. 10-174408). Patent Document 1 discloses a reciprocating device using a columnar magnet. Patent Document 2 discloses a vibration device in which the position of a magnet magnetized in the axial direction is regulated by a spring.

Japanese Patent Laid-Open No. 2003-188012 JP-A-10-174408

  The inventor of the present invention has an object to realize a vibration device having a simple structure that is different from the vibration devices of Patent Document 1 and Patent Document 2 described above.

  That is, an object of the present invention is to provide a vibration device having a simple structure and an electric massage machine using the vibration device.

  A vibration device according to one embodiment of the present invention is a vibration device that operates by being supplied with an alternating current or a direct current. The vibration device is disposed on a nonmagnetic cylindrical member and an outer periphery of the cylindrical member. A coil to which a direct current is supplied, a spherical magnet that is housed inside the cylindrical member and movable along the extending direction of the cylindrical member, and arranged at both ends of the extending direction of the cylindrical member; And a pair of repulsive members for applying a repulsive force to the spherical magnet.

  Preferably, the repulsion member is an elastic body.

  Preferably, the vibration device further includes a housing that covers the coil, and the housing includes a rod-like member that extends long in a direction orthogonal to the extending direction of the cylindrical member.

  Preferably, the electric massage machine uses a vibration device.

  ADVANTAGE OF THE INVENTION According to this invention, the vibration apparatus of a simple structure and an electric massage machine using the same can be provided.

It is a figure which shows an example of the electric massage machine which concerns on embodiment of this invention. It is a schematic diagram which shows the spherical magnet in embodiment of this invention.

  Embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

  An electric massage machine 1 according to an embodiment of the present invention will be described with reference to FIGS. The electric massage machine 1 operates by being supplied with an alternating current or a direct current. The electric massage machine 1 is, for example, a hammer-type electric massage machine, and includes a main body 2 and a housing 3 attached to the main body 2.

  The main body 2 is housed in the non-magnetic tubular member 20, the coil 21 disposed on the outer periphery of the tubular member 20, and the tubular member 20, along the extending direction of the tubular member 20. A movable spherical magnet 22 and a pair of repulsive members 23 and 24 which are disposed at both ends of the cylindrical member 20 in the extending direction and give a repulsive force to the spherical magnet 22 are provided.

  The cylindrical member 20 has a hollow rod shape inside and is open at both ends. The cylindrical member 20 of the present embodiment extends in the left-right direction (the direction of arrow A in FIG. 1) in FIG. In addition, the outer shape and inner shape (hollow shape) of the cylindrical member 20 are not specifically limited, A circular shape, a rectangular shape, etc. are mentioned in cross-sectional view. The cylindrical member 20 of the present embodiment has an outer shape and an inner shape that are cylindrical in a sectional view. In addition, the internal diameter (hollow shape diameter) of the cylindrical member 20 of this Embodiment is a little larger than the spherical magnet 22 mentioned later.

  The cylindrical member 20 is made of a nonmagnetic material. The non-magnetic material is a material that is not a ferromagnetic material, and includes a paramagnetic material, a diamagnetic material, and an antiferromagnetic material. Examples of the non-magnetic material include metals such as aluminum and synthetic resins such as plastic.

  A coil 21 is wound around the outer periphery of the cylindrical member 20. For this reason, the cylindrical member 20 also serves as a bobbin for the coil 21. The coil 21 of the present embodiment is provided on a part of the outer periphery of the cylindrical member 20. Specifically, the coil 21 is attached to the substantially central portion of the cylindrical member 20 in the left-right direction. The left-right distance between the left repulsion member 23 and the coil 21 and the left-right distance between the right repulsion member 24 and the coil 21 are substantially the same. The coil 21 is, for example, a solenoid coil. The coil 21 may be provided on the entire circumference of the cylindrical member 20 or may be provided in a separated region on the outer circumference of the cylindrical member 20.

  A power plug (not shown) is attached to the coil 21. By inserting the power plug into a commercial outlet, an alternating current is supplied to the coil 21 and an alternating magnetic field can be generated. Further, it is possible to adjust the strength of vibration by changing the voltage to the coil 21. In this case, the voltage to the coil 21 can be varied, for example, up to 100V. A switch (not shown) that switches on and off the supply of alternating current to the coil 21 may be attached to the cable that connects the coil 21 and the power plug. Note that it is possible to drive with a direct current by using a multivibrator circuit.

  A spherical magnet 22 is provided inside the cylindrical member 20 so as to be movable along the extending direction of the cylindrical member 20 (the direction of arrow A in FIG. 1). As described above, since the coil 21 is disposed on the outer periphery of the cylindrical member 20, an alternating magnetic field is generated by passing an alternating current through the coil. Thereby, the spherical magnet 22 freely moves in the cylindrical member 20 while rolling and rotating, and reciprocates along the extending direction of the cylindrical member 20.

  With particular reference to FIG. 2, the spherical magnet 22 is a permanent magnet and is magnetized so as to have a hemispherical N pole and S pole. The magnetization (magnetization) method is not particularly limited. For example, there is a method in which a magnet material is fixed at the center of the air-core coil, a pulse high current is passed, and magnetization is performed in the axial direction. The material of the magnet is not particularly limited, but it is preferable to use a Nd—Fe—B sintered magnet from the viewpoint of showing a high magnetic force. In addition, the spherical shape means that the outer shape is spherical, and includes those in which the inside is hollow.

  A pair of repulsive members 23 and 24 are provided at both ends of the cylindrical member 20, respectively. The repulsion members 23 and 24 close the openings at both ends of the cylindrical member 20. Since the spherical magnet 22 accommodated in the cylindrical member 20 reciprocates, the end of the movement of the spherical magnet 22 is defined by the repulsive members 23 and 24. The repulsion members 23 and 24 are made of a nonmagnetic material. Specifically, the repulsion members 23 and 24 are preferably formed of an elastic body having a high repulsive force, such as resin or rubber. Thereby, since the spherical magnet 22 rebounds while giving vibration to the repulsion members 23 and 24, the reciprocating motion can be efficiently repeated, and damage to the spherical magnet 22 due to the reciprocating motion of the spherical magnet 22 can also be suppressed. . In addition, the repulsion members 23 and 24 are spherical, for example. The spherical shape means that the outer shape is spherical, and includes those in which the inside is hollow.

  A housing 25 is provided to accommodate the cylindrical member 20 and the spherical magnet 22 inside. The housing 25 is made of a nonmagnetic material.

  The housing 3 may be integrally formed with the housing 25, or another member may be connected. In the present embodiment, the housing 3 includes, for example, a cover portion 30 that covers the coil 21 from the outside, and a rod-shaped member 31 that extends long in a direction orthogonal to the extending direction of the tubular member 20. The cover 30 accommodates the coil 21 inside and is provided on a part of the outer periphery of the cylindrical member 20, but may be provided on the entire periphery of the cylindrical member 20. It may be provided in the separated area. The rod-shaped member 31 is a portion that is connected to the cover portion 30, extends in a vertical direction from a substantially central portion of the cover portion 30, and is gripped by a user. The cover 30 and the rod-shaped member 31 are both made of a nonmagnetic material.

  Next, operation | movement of the electric massage machine 1 which concerns on this Embodiment is demonstrated.

  First, a power plug (not shown) is inserted into a commercial outlet, and the switch is turned on. An alternating current flows through the coil 21 to generate an alternating magnetic field. Thereby, the spherical magnet 22 moves in the cylindrical member 20 while rolling and rotating. For example, the spherical magnet 22 moves to the left of the cylindrical member 20 and collides with the left repulsion member 23 to transmit vibration to the outside of the left repulsion member 23 and to the right by the repulsive force of the left repulsion member 23. Rebounds toward the right repulsion member 24 located. Furthermore, the spherical magnet 22 collides with the right repulsion member 24, transmits vibration to the outside of the right repulsion member 24, and rebounds toward the left repulsion member 23 by the repulsive force of the right repulsion member 24. By such reciprocating motion of the spherical magnet 22, the impact between the spherical magnet 22 and the repulsion members 23, 24 is transmitted to the outside of the repulsion members 23, 24, and vibration can be transmitted to the user.

  As described above, when the spherical magnet 22 reciprocates within the cylindrical member 20, the spherical magnet 22 is in rolling contact with the cylindrical member 20 while rotating. Since the rolling contact has a small frictional force, the spherical magnet 22 can move smoothly in the cylindrical member 20. Even if the spherical magnet 22 does not rotate due to the influence of magnetic force and the spherical magnet 22 and the cylindrical member 20 are in sliding contact, the spherical magnet 22 and the cylindrical member 20 are in point contact. The frictional resistance between 22 and the cylindrical member 20 is small. Thus, since the kinetic energy generated in the spherical magnet 22 can reduce the contact resistance, the spherical magnet 22 can smoothly move in the cylindrical member 20 with the frictional resistance reduced. Thereby, vibration can be generated efficiently.

  Further, when the number of turns of the coil 21 is increased, the magnetic force becomes stronger, so that the reciprocating motion of the spherical magnet 22 becomes active and the frequency increases. This is effective as the electric massage machine 1, but the coil 21 may become high temperature and the housing 3 may be damaged. On the other hand, since the spherical magnet 22 of the present embodiment rolls and rotates in the cylindrical member 20, it can reciprocate in the cylindrical member 20 with reduced contact resistance. The frictional resistance during exercise can be reduced. Even if the spherical magnet 22 does not rotate due to the influence of magnetic force and the spherical magnet 22 and the cylindrical member 20 are in sliding contact, the spherical magnet 22 and the cylindrical member 20 are in point contact. The frictional resistance between 22 and the cylindrical member 20 is small. Thereby, in this Embodiment, since the reciprocating motion of the spherical magnet 22 can be performed efficiently and the frequency can be increased without increasing the number of turns of the coil 21, the coil 21 does not reach a high temperature, and the housing There is no risk of 3 being damaged.

  In addition, in the said embodiment, although the structure of the electric massage machine 1 using a vibration apparatus was demonstrated as an example of a vibration apparatus, a vibration apparatus is not limited to this. The vibration device only needs to include at least the cylindrical member 20, the coil 21, the spherical magnet 22, and the pair of repulsion members 23 and 24, and the housing 3 is not an essential configuration. In this case, the vibration device may be one that does not include the housing 3 and directly grips the tubular member 20.

  Although the embodiments of the present invention have been described with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

  DESCRIPTION OF SYMBOLS 1 Electric massage machine, 2 Main-body part, 3 Housing, 20 Cylindrical member, 21 Coil, 22 Spherical magnet, 23, 24 Repulsion member, 25 Housing | casing, 30 Cover part, 31 Bar-shaped member.

Claims (4)

In a vibration device that operates by being supplied with alternating current or direct current,
A non-magnetic cylindrical member;
A coil disposed on the outer periphery of the cylindrical member and supplied with an alternating current or a direct current;
A spherical magnet housed inside the tubular member and movable along the extending direction of the tubular member;
A vibration device comprising: a pair of repulsion members disposed at both ends in the extending direction of the cylindrical member and imparting a repulsive force to the spherical magnet.   The vibration device according to claim 1, wherein the repulsion member is an elastic body. A housing that covers the coil;
3. The vibration device according to claim 1, wherein the housing includes a rod-like member that extends long in a direction orthogonal to an extending direction of the cylindrical member.   The electric massage machine using the vibration apparatus in any one of Claims 1-3.

Images