Switch for iontophoresing cation and anion

#1. Field of the invention

#The present invention relates to a switch for iontophoresing cation and anion.

#2. Description of the prior art

#FIG. 1 is the development of an embodiment wherein a plurality of cam plate is provided around a rotary shaft so that an on/off switch and a selection switch are actuated by cam plates.

#FIG. 2 is the development of another embodiment wherein a plurality of contact terminal radially provided on a rotary disc is used to actuate on/off- and selector-switches.

#FIG. 3 is the development of still another embodiment according to the invention wherein plurality of contact terminal provided on the circumferential of a rotary cylinder is used to actuate on/off- and selector-switches.

#Throughout the accompanying drawings, reference numeral (1) designates rotary shaft; (2), knob; (3), cam plate; (4), on/off switch; (5), battery; (6), iontophoretic low-frequency oscillator; (7) and (8), selector switches; (9) and (10), treatment electrodes; (11), rotary disc; (12), rotary shaft; (13), contact terminal of on/off switch; (14) and (15), slidable pieces for operating on/off switch; (16) and (17), contact terminals for operating selector switch; (18), (19), (20) and (21), slidable pieces for operating selector switch; and (22), rotary cylinder.

#The present invention will hereinafter be explained with reference to the drawings.

#FIG. 1 is illustrative of an embodiment according to the invention, wherein a plurality of cam plate is provided on a rotary shaft so that an on/off switch for power circuit and a selector switch for reversing the output current from an iontophorectic low-frequency oscillator can be actuated by turning the cam plates. Reference numeral (1) designates the rotary shaft actuated by knob (2). Reference numerals (3a), (3b) and (3c) designate the cam plates supported by rotary shaft (1), and the cam plates can be turned by moving rotary shaft (1) with knob (2). Reference numeral (4) designates the on/off switch actuated by moving movable piece (4a) with cam plate (3a), and the on/off switch closes and opens the power circuit when they come into contact respectively with fixed pieces (4b) and (4c). Reference numeral (5) designates the battery as the power source. Reference numeral (6) designates the iontophoretic low-frequency oscillator comprising, for example, a blocking oscillator or a multivibrator. Reference numeral (7) designates a selector switch for selecting "plus" output current from iontophoretic low-frequency oscillator (6). Switch (7) opens and closes the circuit when actuated by moving movable piece (7a) with cam plate (3b) to contact movable piece (7a) with fixed pieces (7b) and (7c). Reference numeral (8) designates a selector switch for selecting "minus" output current from iontophoretic low-frequency oscillator (6). Switch (8) opens and closes the circuit when actuated by moving movable piece (8a) with cam plate (3c) to contact movable piece (8a) respectively with fixed pieces (8b) and (8c).