Message device

A massage device capable of producing vibrating or reciprocating motions for massaging muscles of a person comprises a shell, enclosed at the upper and lower end by a pair of end plates, houses a coaxial central axle provided with a middle voice coil having a plurality of brushes. The brushes are each slidably mounted on a longitudinal electric brush axle through an insulting sleeve The inner wall of the shell is provided by upper, middle and lower sets of magnets, whereby an electric current flowing into the electric brush axles and the coils mounted thereon will produces a magnetic field interacting with the field by the magnets, urging the central axle to move in the longitudinal direction. Since the current is alternating, the associated motion of central axle is reciprocating, ready for the purpose of massage.

FIELD OF THE INVENTION

The present invention relates to massage device, moiré particularly to a massage device capable of producing vibrating or reciprocating motions for massaging muscles of a person.

BACKGROUND OF THE INVENTION

The massage devices of the prior art mainly comprise a massage head and a stick body housing an actuating device. The conventional massage devices have the disadvantages as follows.a. The massage head produces vibrations of mild amplitudes.b. The frequency of the vibration is fixed.c. The massage head cannot do substantial reciprocating motions along the longitudinal direction.d. The vibration of the massage head is driven mechanically and the mechanism could wear out after a limited period of time.e. Therefore, the maintenance cost is high.

Therefore, inventing a massage device capable of doing substantial reciprocating motions and having better durability is significant.

SUMMARY OF THE INVENTION

The primary objective of the present invention is to provide a massage device capable of producing vibrating or reciprocating motions for massaging muscles of a person.

DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT

Referring toFIGS. 1,2,3and4, a massage device according to the present invention capable of producing vibrating or reciprocating motions for massaging muscles of a person comprises a cylindrical shell1enclosed at two ends by a pair of end plates2, a central axle3coaxially extending along the shell1slightly out of both of the end plates2, and a pair of conducting electric brush axles6parallel to the central axle3retained on the end plates2respectively by screw bolts5and insulating sleeves4. Each of the ends of the central axle3is further provided with a connecting member14, and the middle section of the central axle3is provided with a voice coil7, which further includes a plurality of grooves8for respectively embedding electric brushes9. Each of the electric brushes9is further provided with a brush insulating sleeve10for holding the electric brush axle6. Two opposite sides of the voice coil7are respectively provided with magnetically permeable plates11of partial annular shape. Further, the upper, middle and lower sections of the inner wall of the shell1are each provided with a set of magnets12of partial annular shape arranged. Further, the magnets12are arranged in alternating N, S polarities in the longitudinal direction of the shell1. Coils13respectively electrically connected to the electric brush axles6are located between the conducting magnetic plates11and the magnets12.

Thereby, an electric current can be guided into the electric brush axles6and coils13, producing a magnetic field interacting with the background magnetic fields of the magnets12. Since the current is alternating, the periodically changing force in the longitudinal direction of the shell1can be achieved, whereby the central axle3will be driven up and down. Such a reciprocating motion will facilitates a massage effect based on this device. Since the central axle3is magnetically driven, there is no electric wire moving with the central axle3, therefore producing no running down of wires, and therefore the massage device will be more durable.

As shown inFIGS. 1,2,3and4, the massage device of the present invention is a shell1, enclosed at the upper and lower end by a pair of end plates2, houses a coaxial central axle3provided with a middle voice coil7having a plurality of brushes9. The brushes9are each slidably mounted on a longitudinal electric brush axle6through an insulting sleeve10. The inner wall of the shell1is provided by upper, middle and lower sets of magnets12, whereby an electric current flowing into the electric brush axles6and the coils13mounted thereon will produces a magnetic field interacting with the field by the magnets12, urging the central axle3to move in the longitudinal direction. Since the current is alternating, the associated motion of central axle3is reciprocating.