Patent Number: 049838512
Section: description

BEST MODE FOR CARRYING OUT THE INVENTION Though the drawings show an example in which the present invention is embodied in a magnetic field generating therapeutical apparatus, it is not limited thereto, and it will be appreciated that the present invention may be applied in other various physical therapeutical apparatus as far as they include an internal heat generating portion. FIGS. 1 and 2 show the entire configuration of the magnetic field generating therapeutical apparatus according to one embodiment of the present invention, in which magnetic field generators 2 are disposed respectively in a plurality of plastic cases 1. Each case body 1 is pivotally connected in a row and on the case bodies 1, 1 positioned at opposite ends, and belts 13, 13 are mounted for interconnection. The case body 1 is formed by a pair of half-body cases 11, 12 whose opening surfaces are brought face to face and secured by screws 6 at several locations. As shown in FIG. 2 and FIG. 3, on side end faces of the case body 1, either pivots 14, 14 or bearing holes 15, 15 are formed vertically to interconnect each case body 1, 1 pivotably by engaging the pivot 14 to the bearing hole 15 between the adjacent case bodies 1, 1. As shown in FIG. 4, the magnetic field generator 2 comprises a laminated iron core 20 including legs 22, 23 at opposite ends of a base 21, and coil bobbins 31, 32 engaged to respective legs 22, 23. The coil bobbins 31, 32 are constructed by winding coils 37, 38 around plastic spools 35, 36 having collars 33, 34 on opposite ends. When an AC current is applied to the coils 37, 38, an alternating field is generated from tips of the legs 22, 23. As shown in FIG. 3, on the inner surface of one half-body case 12, positioning pieces 41, 41 for positioning the magnetic field generator 2 are projected integrally, thereby the base 21 of the laminated iron core 20 is positioned inside the two positioning pieces 41, 41. The other half-body case 11 constitutes fixing means for the magnetic field generator 2 for forming a depression (not shown) on its inner surface for supporting the collars 33, 34 of the spools 35, 36, and the plate surface of the half-case body 11 constitutes a magnetic field active surface 16 which contacts to a human body. On the magnetic field active surface 16 of the half-body case 11, a far infrared radiating material such as zirconia, zircon, titania, alumina, cozilite and silica is coated to form a radiation layer 17. Though the far infrared radiating material is excited by heat to radiate far infrared rays, besides coating the far infrared radiating material on the surface of the case body 1 as the present embodiment, this material may be mixed with forming materials of the case body 1. FIG. 5 shows another embodiment of the present invention, in which a uniformalizing layer 5 for distributing heat uniformly on the magnetic field active surface 16 of the half-body case 11 is formed. The uniformalizing layer 5 shown in the figure is, as shown in FIG. 6, formed by disposing a depression 42 throughout the entire magnetic field active surface 16 on the half-body case 11, filling a convection fluid such as air, water and oil or magnesium oxide having a good heat conductivity therein, and covering the opening with a transparent cover 18 by sticking or welding integrally. FIGS. 7 and 8 show another forming process of the uniformalizing layer 5. In the figure, a mounting depression 44 having slide grooves 43, 43 on both sides thereof is formed on the magnetic field active surface 16 of the half-body case 11, and a mounting case 19 having the uniformalizing layer 5 therein is disposed removably with respect to the mounting depression 44. It is to be understood that the uniformalizing layer 5 is formed with air, water, oil, magnesium oxide and so on as same as aforementioned. In the embodiment shown in FIGS. 5 to 8, although the far infrared radiating material may be mixed with the materials of case body 1 or coating it on the surface thereof, it is not limited thereto, in that the far infrared radiating material may be mixed in the uniformalizing layer 5. FIG. 9 shows the entire configuration of the magnetic field generating therapeutical apparatus, in which a covering member B covers the apparatus A. The apparatus A is constructed as same as those shown in FIGS. 1 to 4, wherein necessary corresponding parts are shown by like reference characters to omit its explanation. The cover member B is constituted by a cylindrical bag having a length responsive to the connected length of a plurality of case bodies 1, 1. On both openings of the cover member B, there are provided fastening straps 71, 71 to cover the therapeutical apparatus A as if wrapping it in the bag. Though the cylindrical bag 7 is made of cloth such as woven or unwoven fabrics, it is not limited thereto, it may be formed with resin or rubber materials as far as they are soft and agreeable to the touch. On the surface of cover member B, powdered materials containing the far infrared radiating material such as zirconia, zircon, titania, alumina, cozilite, silica, etc. are coated in a given pattern by printing as shown in FIG. 10 to form radiating portions 72 which are projected slightly. Though the far infrared radiating material is excited by heat to radiate infrared rays, besides printing on the cloth surface as the present embodiment, the cloth may be impregnated with the far infrared radiating material or woven by threads impregnated or coated with the far infrared radiating material. FIGS. 11 and 12 show another embodiment of the cover member B, wherein a uniformalizing layer 75 for distributing heat uniformly is formed. The uniformalizing layer 75 shown is constituted by overlapping two sheets of synthetic resin 74, 74 to construct the cover member B, forming a number of compartments 73, 73 between the sheets by means of thermal fusion or the like and filling a convection fluid such as air, water, oil, etc. or magnesium oxide having a good heat conductivity into each compartment 73. In the aforesaid embodiment, though the entire therapeutical apparatus A is generally covered by the cover member B, it is not limited thereto, it may be covered partially. FIGS. 13 and 14 show the embodiment wherein the therapeutical apparatus A is covered partially and the uniformalizing layer 75 aforementioned is provided in the cover member B. The cover member B shown comprises a skin-contact portion 77 abutting the side of active surface 16 of the half-body case 11 in series, and mounting portions 76a, 76b which are connected at the rear of each case body 1, on overlapping surfaces of the mounting portions 76a, 76b, face fasteners (not shown) which engage and disengage one another are provided. In the skin-contact portion 77, as same as the embodiment of FIGS. 11 and 12, a number of compartments 73 are formed between the sheets, into which air, water, oil, magnesium oxide, etc. is filled to form the uniformalizing layer 75. INDUSTRIAL APPLICABILITY When using the magnetic field generating therapeutical apparatus, first, it is fastened about and fixed to a human body such that one or a plurality of case bodies 1 are contacted to portions of the body where stiffness or pain are generated or to the portion of fractured bone. Then, when a power is applied, coils 37, 38 of each magnetic field generator 2 are energized and their superposed magnetic fluxes are produced from the end faces of legs 22, 23 of the laminated iron core 20. Thereby, heat is generated at the iron core 20 and coils 37, 38, which is conducted to the case body 1 and cover member B. As a result, the case body 1 and cover member B are warmed and the far infrared radiating material is excited to radiate far infrared rays. The far infrared rays radiated acts on the body to warm therein and improves the warming effect. When the uniformalizing layers 5, 57 are provided on the case body 1 and cover member B, they distribute the heat generated uniformly on the surfaces of the case body 1 and cover member B by the convection and heat conduction. Accordingly, heat is applied to the body evenly in a wide area to improve the warming effect and comfortable feeling.