JPS626825B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that applies a fluctuating magnetic field to the surface of the epidermis of the human body to improve blood circulation and treat subjective symptoms such as stiff shoulders.

Conventionally, applying a static magnetic field that does not fluctuate over time to the human body has been effective in improving blood circulation and treating subjective symptoms such as stiff shoulders, and NetCress and pasted magnetic products are already on the market. In addition to this static magnetic field, clinical experiments have shown that applying a varying magnetic field such as an alternating magnetic field or an irregularly varying magnetic field to the human body improves blood circulation and significantly increases the effect of curing stiff shoulders. FIGS. 1 and 2 show a conventional device, in which 1 is a yoke, 2 is a coil wound around the yoke 1, and the lead wire 2 is excited by a commercial power source. Since the magnetic circuit consisting of the yoke 1 is an open circuit, the number of turns of the coil 2 and the number of turns of the yoke 1 must be adjusted to obtain the required magnetic flux density.
is larger and heavier.

In addition, there are magnetic therapy devices that use a varying magnetic field that have a coil wound around an iron core, but they are heavy and large in size because they require an open magnetic circuit to obtain the necessary magnetic field.
Furthermore, since the power factor is low, a large current is required, and the copper loss and excitation loss of the coil are large, making it unsuitable as a power load. Moreover, it is inconvenient to carry and handle.

Furthermore, since the magnetic circuit is open, the power factor as an electrical load is low (0.1 to 0.2), and the copper loss of the coil 2 is also large. In addition, due to heat generation due to copper loss, the specifications of the coil 2 are often limited to short-time ratings, making it necessary to provide a protection circuit, resulting in disadvantages such as a complicated structure.

FIG. 2 is an explanatory diagram of the state of use of a conventional variable magnetic field type magnetic therapy device, where 3 is a human body, 4 is a seat, and 5 is the main body of the magnetic therapy device. This treatment device is large in shape and weight, feels uncomfortable when placed on the waist, and is inconvenient to carry.

The present invention relates to a variable magnetic field type magnetic therapy device that has improved the above-mentioned drawbacks and has also improved portability and handling.
In particular, the present invention provides a small, lightweight, inexpensive, and energy-saving treatment device that doubles the therapeutic effect by applying a variable magnetic field to the human body.

FIG. 3 is an enlarged sectional view of one magnetic field generating section of the variable magnetic field type magnetic therapy device of the present invention. 6 is the skin surface of the body, 7 is a strong permanent magnet with high coercive force and high residual magnetic flux density, such as a rare earth permanent magnet, processed into a shape that is easy to turn, such as a spherical permanent magnet, and 8 is a permanent magnet magnetized with two poles. A cylinder with upper and lower lids (hereinafter referred to as cylinder) containing a permanent magnet 7 made of a non-magnetic material, 9 a hollow space in which the permanent magnet 7 moves freely, and 10 a cylindrical wound coil close to the bottom surface of the cylinder 8. be. Here, the surface magnetic flux density of the permanent magnet 7 is 3 to 5φ spherical,
Experimental results have shown that it reaches 2500-3000 GOe.

When an alternating voltage is applied to the wound coil 10, a weak alternating magnetic field as shown in 11 is generated. (This winding coil can normally be turned in about 5 to 10 turns.) The permanent magnet receives this alternating magnetic field and moves in the hollow space 9 while rotating as shown in FIG.

Since the permanent magnet 7 having a surface magnetic flux density of 2500 to 3000 GOe rotates, on the upper and lower cover surfaces of the cylinder 8,
A varying magnetic field is obtained from 2500 to 3000 GOe maximum.

When a variable magnetic field generating section based on this principle is made of a ferrite magnet, the shape becomes large and rotational movement of the magnet cannot be obtained. Furthermore, since alnico magnets have a weak coercive force, the magnet demagnetizes, making it impossible to obtain a fluctuating magnetic field. A variable magnet that rotates and moves can be generated for the first time by using a rare earth permanent magnet that has a high coercive force and a high residual magnetic flux density.

According to the experimental results, in the case of a 3φ to 5φ ball, with a coil winding diameter of 30φ to 40φ and a coil winding number of 5 to 10 turns, it has been experimentally confirmed that the magnet 7 moves at a considerable speed in the hollow space 9. There is.

FIGS. 5 and 6 show a variable magnetic field type magnetic therapy device in which a large number of these generators are combined. 12 is a magnetic field generating section, and 13 is a mat containing these magnetic field generating sections 12, which is made of a material such as soft cloth or rubber that fits the body. 14 is a lead wire that electrically connects each magnetic field generating section 13; 15;
is a switch, and 16 is a power supply. Magnetic field generator 12
are connected in series or in parallel. Magnetic field generator 12
The upper surface of the mat 13 is exposed to the surface of the mat 13 so as to come into contact with the skin, or a protective sheet is attached thereto. The lead wire 14 is flexible and is embedded within the mat 13.

As described above, the variable magnetic field type magnetic therapy device according to the present invention is sheet-like and lightweight, and can be placed under the body or applied locally to the body, making it convenient to handle. In addition, it fits well to the curved parts of the body, so it does not cause any discomfort.

Furthermore, since the small, lightweight, and powerful rare earth permanent magnet 7 can be rotated and moved using a minute current, power can be saved.

[Brief explanation of the drawing]

FIG. 1 is a conventional electromagnet-type variable magnetic field magnetic therapy device, FIG. 2 is an explanatory diagram of its use, and FIG. 3 is an enlarged cross-sectional view of one magnetic field generating part of the variable magnetic field magnetic therapy device according to the present invention. Figure 4 is an explanatory diagram of its operating state.
FIG. 5 is a front view of a treatment device according to the present invention, and FIG.
The figure is a sectional view of FIG. 5. 6: skin surface, 7: magnet, 8: cylinder, 9: hollow space, 10: wound coil, 11: magnetic field, 12: variable magnetic field generator, 13: mat, 14: lead wire.

Claims (1)

[Scope of Claims] 1. A large number of magnetic field generating parts each having a cylindrical wound coil attached to the bottom of a non-magnetic cylindrical container having a hollow space are connected with lead wires at appropriate intervals and buried in a mat. A permanent magnetic material with the characteristics of high coercive force and high residual magnetic flux density is processed and magnetized so that it can freely rotate and inserted into the treatment device container, and an external power source is connected to the lead wire to prevent minute fluctuations. A variable magnetic field type magnetic therapy device characterized in that a permanent magnet material is rotated and moved by a magnetic field, and a high magnetic force variable magnetic field is generated by the movement of the permanent magnet and the magnetic force possessed by the magnet. 2. Claim 1, characterized in that each of the above-mentioned magnetic field generating parts are connected in series or parallel with lead wires and embedded in a flexible mat or sheet.
The variable magnetic field type magnetic therapy device described in .