JP4133920B2 - Negative potential treatment device - Google Patents

Description

  The present invention relates to a negative potential treatment device.

  It is known that a therapeutic effect for stiff shoulders and the like can be obtained by arranging an electrode maintained at a negative potential in the vicinity of the human body. Conventionally, various negative potential treatment devices have been developed. A warming tool having a negative potential treatment effect has also been developed (see, for example, Patent Document 1).

  In the negative potential treatment device, it is necessary to charge the human body to a negative potential with respect to the ground. For this purpose, it is necessary to connect the cathode terminal of the negative potential generating circuit to the negative potential treatment electrode (electrode) and ground the anode terminal.

By utilizing the fact that one of the two distribution lines of the commercial power supply is grounded, the anode terminal of the negative potential generating circuit can be easily grounded without providing the negative potential treatment device with ground. Thereby, negative potential treatment can be performed easily and safely.
JP-A-9-180857

  However, when the user inserts the power plug of the negative potential treatment device into an AC 100 volt commercial power outlet, any electrode of the outlet is a live wire (non-grounded potential wire) or a non-live wire (grounded side). (Potential line) is not considered. Therefore, depending on the insertion direction of the outlet, the AC component of the commercial power supply may be superimposed on the negative potential supplied to the electric floor. In that case, the level of the negative potential greatly fluctuates, which hinders stable negative potential treatment.

  Therefore, a negative potential treatment device has been proposed that includes a switching circuit that detects an electrode connected to a non-live line of the two electrodes of the power plug and connects the electrode to the anode terminal of the negative potential generation circuit. However, the provision of the switching circuit complicates the structure and hinders cost reduction and miniaturization.

  Further, in the negative potential treatment device, it is necessary to generate a high level negative potential in order to perform effective negative potential treatment. Therefore, in the conventional negative potential treatment device, the AC voltage of the commercial power source is boosted using a transformer in order to generate a high level negative potential.

  However, electromagnetic waves are generated by the leakage magnetic field of the transformer. Since such electromagnetic waves affect the surrounding environment and the human body, it is desirable to suppress the generation of electromagnetic waves as much as possible.

  The object of the present invention is to suppress or reduce the AC component superimposed on the negative potential regardless of the insertion direction of the power plug by the user, prevent the generation of electromagnetic waves with a simple configuration, and provide a stable level of negative potential. The object is to provide a negative potential treatment device that can be supplied safely and reliably.

The negative potential treatment device according to the present invention includes a first and second potential lines, an N-fold voltage rectifier circuit (N is an integer of 2 or more), a load element, first and second unidirectional conduction functional elements, Or a plurality of constant voltage generating elements, electrodes, first and second switches, and a ground detection device, wherein the first and second potential lines are a ground potential line and a non-ground potential line of the AC power source. The N-fold voltage rectifier circuit is connected to one and the other respectively, and is connected to the first and second potential lines, generates a negative voltage and applies it to one end of the load element, and the first unidirectional conduction function The anode of the element is connected to the first potential line, the anode of the second unidirectional functional element is connected to the second potential line, the cathode of the first unidirectional conduction functional element and the second unidirectional The cathodes of the conductive conduction functional elements are connected to each other at connection points, or 1 or A plurality of constant voltage generating elements are connected in series between the other end of the load element and the connection point, a negative potential generated by one or more constant voltage generating elements is applied to the electrode, and the first switch is The second switch is provided in a current path from the first potential line to the connection point via the first unidirectional conduction functional element, and the second switch is connected to the second unidirectional conduction function from the second potential line. The first and second unidirectional conduction functional elements are provided in a current path that reaches the connection point via the element, and the ground detection device is an alternating current of the first and second potential lines. A potential line connected to the ground potential line of the power supply is detected. When the first potential line is connected to the ground potential line, the second switch is turned off, and the second potential line is grounded. When connected to the potential line, the first switch is turned off .

In the negative potential treatment device according to the present invention, the first and second potential lines are respectively connected to one and the other of the ground-side potential line and the non-ground-side potential line of the AC power supply. Thus, the AC voltage of the AC power supply is rectified and boosted N times by the N-fold voltage rectifier circuit, and a negative voltage is generated at one end of the load element .

When one of the first and second potential lines is connected to the ground potential line of the AC power source, an AC component is superimposed on the negative voltage generated by the N-fold voltage rectifier circuit , When the other of the second potential lines is connected to the ground potential line of the AC power source, the negative voltage generated by the N-fold voltage rectifier circuit is constant.

  In addition, when the first potential line is connected to the ground-side potential line of the AC power supply, the first switch is turned on and the second switch is turned off. As a result, the potential at the connection point is substantially the ground potential. When the second potential line is connected to the ground-side potential line of the AC power supply, the first switch is turned off and the second switch is turned on. As a result, the potential at the connection point is substantially the ground potential.

Further, between the other end and the connection point of the loading element by one or more of the constant voltage generating device is kept constant voltage, negative potential Ru is applied to the electrode. When an AC component is superimposed on a negative voltage generated by the N-fold voltage rectifier circuit by one or more constant voltage generating elements, the AC component is absorbed by the load element.

Therefore, regardless of which of the first and second potential lines is connected to the ground-side potential line of the AC power source , the AC component is not superimposed on the negative potential, and a stable and constant negative potential is applied to the electrode. Given.

In this case, the connection point is always reliably grounded, and safety is ensured. Further, since the switching circuit for connecting the potential line connected to the ground side potential line to the anode terminal of the negative potential generating circuit is not required, the configuration is not complicated.

Further, the AC component superimposed on the negative potential is reliably removed . Therefore, a stable and constant level of negative potential is applied to the electrode.

Further, by using the N-fold voltage rectifier circuit, the first and second unidirectional conduction functional elements, the constant voltage generating element, and the load element, a high level negative potential can be obtained without using a transformer. Therefore, the generation of electromagnetic waves due to the leakage magnetic field of the transformer is suppressed.

  In addition, the constant voltage generating element has an extremely low internal impedance when a constant voltage is generated. Therefore, a static voltage discharge path generated in the electrode (therapeutic electric floor) and a noise voltage source or a therapeutic negative generated by an AC induction electric field. Acts as a short circuit for unwanted voltage sources that disturb the potential. Thereby, unpleasant skin irritation due to static electricity can be eliminated, and the electrode can be held at a stable negative potential. Therefore, a stable and effective negative potential treatment function is exhibited.

As a result, the AC component superimposed on the negative potential is suppressed regardless of the insertion direction of the power plug by the user, and the generation of low-frequency electromagnetic waves based on commercial frequency power is prevented and stable with a simple configuration. A certain level of negative potential can be supplied safely and reliably.

  In addition, since the first and second switches are normally in a conductive state, even if the first and second switches are not switched due to a failure or malfunction of the ground detection device, the first and second switches The potential lines are securely connected to the connection points through the first and second unidirectional conducting functional elements, respectively.

  In this case, when the first potential line is connected to the ground-side potential line of the AC power supply, a current flows from the second potential line through the second unidirectional conduction functional element to the connection point. The potential is a potential obtained by superimposing a half-wave pulsation component on the ground potential. When the second potential line is connected to the ground potential line of the AC power source, a current flows from the first potential line to the connection point through the first unidirectional conduction functional element, and the potential of the connection point is The electric potential is obtained by superimposing a half-wave pulsation component on the ground potential.

  Thereby, even in the case of a failure or malfunction of the ground detection device, the AC component superimposed on the negative potential is suppressed to a half-wave pulsation component. Accordingly, a stable negative potential is always applied to the electrode.

  The first unidirectional conduction functional element may comprise a first diode, and the second unidirectional conduction functional element may comprise a second diode.

In this case, the connection point can be reliably grounded in at least a half cycle by an inexpensive and simple configuration.

  The one or more constant voltage generating elements may be composed of one or more Zener diodes.

In this case, it is possible to maintain a constant voltage between the connection point and the electrode with an inexpensive and simple configuration, as well as a discharge path of static electricity generated in the electrode (therapeutic electric floor), and a noise voltage generated by an AC induction electric field. A short circuit of unwanted voltage sources that disturb the source or therapeutic negative potential can be formed. Thereby, it is possible to retain a stable negative potential electrodes. Therefore, a more stable and effective negative potential treatment function is exhibited.

  The load element may be a resistance element. In this case, the AC component can be reliably absorbed when the AC component is superimposed on the negative voltage generated at the first node. Thereby, a stable negative potential can be applied to the electrode.

  According to the negative potential treatment device of the present invention, the AC component superimposed on the negative potential is suppressed or removed regardless of the insertion direction of the power plug by the user, and the generation of electromagnetic waves is prevented and stable with a simple configuration. Therefore, the negative potential of the selected level can be supplied safely and reliably.

  Hereinafter, a negative potential treatment device according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a circuit diagram of a negative potential treatment device according to an embodiment of the present invention. The negative potential treatment device of FIG. 1 includes a controller unit 100 and a warming / negative potential generation unit 200.

  One electrode of the outlet 300 is connected to an AC power source (commercial power supply power source) AC non-live line (ground side potential line) 301, and the other electrode is an AC power source AC live line (non-ground side potential line) 302. It is connected to the.

  One electrode of the power plug 1 is connected to the line L1, and the other electrode of the power plug 1 is connected to the line L2. When the power plug 1 is inserted into the outlet 300, one of the line L1 and the line L2 is connected to a non-live line of the AC power supply AC, and the other is connected to a live line. A switch 2 is inserted in the line L2.

  The controller unit 100 includes a negative potential generation circuit 101, a temperature control circuit 102, a thyristor 103, and a changeover switch 104.

  The heating / negative potential generator 200 includes a heater 201 and a temperature sensor 202. The heater 201 includes a first heating conductor 201a, a second heating conductor 201b, and a shield conductor 201c. On the other hand, the temperature sensor 202 includes a heat sensitive wire 202a and a shield conductor 202b. In the present embodiment, the shield conductor 201c of the heater 201 and the shield conductor 202b of the temperature sensor 202 are used as the electroplating belt 400 for applying a negative potential.

  The negative potential generating circuit 101 has terminals 101a and 101b. A negative potential of −300V is output from the terminal 101a, and a negative potential of −600V is output from the terminal 101b. Details will be described later. The changeover switch 104 is switched to one of the terminal 101a and the terminal 101b.

  A diode 3 is connected between one end of the first heating conductor 201a and one end of the second heating conductor 201b of the heater 201. The other end of the first heat generating conductor 201a is connected to the line L1, and the other end of the second heat generating conductor 201b is connected to the line L2 via the thyristor 103. Both ends of the heat sensitive wire 202 a of the temperature sensor 202 are connected to the temperature control circuit 102. The temperature control circuit 102 performs on / off control of the thyristor 103 based on the value of the current flowing through the heat sensitive wire 202a.

  When the switch 2 is turned on, a current flows from the line L1 to the line L2 via the first heating conductor 201a of the heater 201, the diode 3, the second heating conductor 201b, and the thyristor 103. Thereby, the first and second heat generating conductors 201a and 201b of the heater 201 generate heat. At this time, the temperature control circuit 102 performs temperature control by performing on / off control of the thyristor 103 based on the value of the current flowing through the heat sensitive wire 202a of the temperature sensor 202.

  The negative potential generated by the negative potential generation circuit 101 is applied to the shield conductor 201 c of the heater 201 and the shield conductor 202 b of the temperature sensor 202 that function as the electric floor belt 400 via the changeover switch 104. Thereby, the negative potential treatment function is exhibited.

  FIG. 2 is a circuit diagram of the negative potential generating circuit 101 of FIG.

  As shown in FIG. 2, negative potential generating circuit 101 includes a ground detection circuit 11, switches SA and SB, diodes D1 to D6, capacitors C1 to C6, Zener diodes ZD1 and ZD2, a resistor R1, and an electric belt 400.

  Two input terminals of the ground detection device 11 are connected to lines L1 and L2 at nodes A and B, respectively.

  One terminal of the switch SA is connected to the node A. The other terminal of the switch SA is connected to the anode of the diode DA. One terminal of the switch SB is connected to the node B. The other terminal of the switch SB is connected to the anode of the diode DB. The cathode of the diode DA and the cathode of the diode DB are connected to each other at a node C.

  The diodes D1 to D6 are connected in series. The cathode of the diode D2 is connected to the anode of the diode D1, and the cathodes of the diodes D3 to D6 are connected to the anodes of the diodes D2 to D5 in the following order. The cathode of the diode D1 is connected to the node B, and the anode of the diode D6 is connected to the node F.

  A capacitor C1 is connected between the node A and the anode of the diode D1, a capacitor C2 is connected between the cathode of the diode D2 and the anode of the diode D3, and the cathode of the diode D4 and the anode of the diode D5 (node G) A capacitor C3 is connected between the two.

  A capacitor C4 is connected between the cathode of the diode D1 (node B) and the anode of the diode D2, a capacitor C5 is connected between the cathode of the diode D3 and the anode of the diode D4, and the cathode of the diode D5 and the diode D6. A capacitor C6 is connected to the anode (node F).

  The cathode of the Zener diode ZD1 is connected to the node C, and the anode of the Zener diode ZD1 is connected to the node D. The cathode of the Zener diode ZD2 is connected to the node D, and the anode of the Zener diode ZD2 is connected to the node E. The resistor R1 is connected between the node E and the node F.

  One terminal 101a of the changeover switch 104 is connected to the node D, and the other terminal 101b of the changeover switch 104 is connected to the node E.

  Here, the diodes D1 to D6 and the capacitors C1 to C6 constitute an N-fold voltage rectifier circuit (multi-stage voltage rectifier circuit). Here, N is an integer of 2 or more. Each of capacitors C1 to C6 is charged to a voltage close to the peak value of the AC voltage of AC power supply AC.

  In this case, the voltage VD1 at both ends (between the node A and the node G) of the series circuit of the capacitors C1 to C3 becomes a DC voltage, and between both ends (between the node B and the node F) of the series circuit of the capacitors C4 to C6. The voltage VD2 is also a DC voltage. On the other hand, the voltage VA1 at both ends (between the node A and the node F) of the series circuit of the AC power supply AC and the diodes D1 to D6 becomes an AC voltage, and both ends of the series circuit of the diodes D1 to D5 (the node B and the node G). The voltage VA2 between (between and) is also an AC voltage.

  When the line L1 is connected to a non-live line (ground side potential line), that is, when the node A is grounded, the node F has a negative potential (about 850 V) about 6 times the peak value of the AC voltage of the AC power supply AC. ) Occurs. At this time, since the voltage VA1 between the node A and the node F is an AC voltage, the negative potential includes a pulsating component (pulsating flow component).

  On the other hand, when the line L2 is connected to a non-live line (ground side potential line), that is, when the node B is grounded, the negative potential (about 6 times the peak value of the AC voltage of the AC power supply AC is applied to the node F. About 850V) is generated. At this time, since the voltage VD2 between the node B and the node F is an AC voltage, the negative potential is a constant potential that does not include an AC component.

  Zener diodes ZD1 and ZD2 are constant voltage diodes. Zener diodes ZD1, ZD2 and resistor R1 constitute a DC constant voltage stabilizing circuit. The Zener voltage of the Zener diodes ZD1, ZD2 is, for example, 300V. In that case, the potential of the node D is 300 V lower than the potential of the node C. Further, the potential of the node E is 300 V lower than the potential of the node D.

  The switches SA and SB are normally on. The ground detection device 11 detects which of the lines L1 and L2 is grounded, and turns off one of the switches SA and SB based on the detection result. That is, the ground detection device 11 turns off the switch SB when the line L1 (node A) is grounded, and turns off the switch SA when the line L2 (node B) is grounded.

  Thereby, when the line L1 (node A) is grounded, the node C is almost at the ground potential. At this time, an alternating current component is superimposed on the potential of the node F as described above. This AC component is absorbed by the resistor R1, and a constant negative potential is generated at each of the nodes D and E. The negative potential of node D is about -300V, and the negative potential of node E is about -600V.

  Even when the line L2 (node B) is grounded, the node C is almost at the ground potential. At this time, as described above, a negative potential not including an AC component is generated at the node F. Therefore, a constant negative potential is generated at node D and node E, respectively. The negative potential of node D is about -300V, and the negative potential of node E is about -600V.

  Next, potential waveforms at nodes C, D, E, and F in the negative potential generating circuit 101 of FIG. 2 will be described.

  FIG. 3 is a diagram showing potential waveforms at the nodes C and F when both the switches SA and SB are on.

  3A to 3D, the vertical axis indicates the potential, and the horizontal axis indicates the phase. Further, the waveform of the AC voltage of the AC power supply AC is shown by a broken line in order to indicate the phase reference. The same applies to FIGS. 4 to 8 below.

  FIG. 3A shows the potential waveform of node C when node A is grounded, and FIG. 3B shows the potential waveform of node C when node B is grounded. FIG. 3C shows a potential waveform of the node F when the node A is grounded, and FIG. 3D shows a potential waveform of the node F when the node B is grounded.

  As shown in FIGS. 3A and 3B, when both the switches SA and SB are on, the AC voltage of the AC power supply AC is half-wave rectified by the diodes DA and DB. Thereby, the potential of the node C becomes a ground potential in a half cycle, and has a pulsating component that varies in accordance with the AC voltage in the remaining half cycle. The potential of node C is shifted in half-cycle phase between the case where node A is grounded and the case where node B is grounded.

  As shown in FIG. 3C, when the node A is grounded, the potential of the node F is changed to a potential that is reduced by the DC voltage VD2 between the node A and the node F from the ground potential. It has a waveform on which AC AC voltage is superimposed.

  As shown in FIG. 3D, when the node B is grounded, the potential of the node F is constant at a potential that is reduced by the DC voltage VD2 between the node A and the node F from the ground potential. Become.

  FIG. 4 is a diagram showing potential waveforms at nodes D and E when both switches SA and SB are on.

  FIG. 4A shows the potential waveform of the node D when the node A is grounded, and FIG. 4B shows the potential waveform of the node D when the node B is grounded. FIG. 4C shows the potential waveform of the node E when the node A is grounded, and FIG. 4D shows the potential waveform of the node E when the node B is grounded.

  4A and 4B, the potential of the node D has a waveform that is lower than the potential of the node C by 300 V of the Zener voltage of the Zener diode ZD1. As a result, the potential of the node D has a waveform in which a half-cycle pulsation component is superimposed on a DC component of approximately −300V.

  As shown in FIGS. 4C and 4D, the potential of the node E has a waveform that is lower than the potential of the node C by 600 V of the Zener voltages of the Zener diodes ZD1 and ZD2. As a result, the potential of the node E has a waveform in which a half-cycle pulsation component is superimposed on a DC component of approximately −600V.

  In the negative potential treatment device according to the present embodiment, one of the switches SA and SB is normally turned off by the ground detection device 11. However, when the ground detection device 11 cannot detect which of the lines L1 and L2 is connected to the non-live line, the potentials of the nodes C, F, D, and E are as shown in FIGS. The waveform is as shown in FIG.

  In this case, as shown in FIGS. 4A to 4D, the negative potential applied to the electric floor belt 400 has a waveform in which a half-cycle pulsation component is superimposed on the DC component. Thereby, the AC component included in the negative potential is reduced as compared with the case where the AC voltage of the AC power supply AC is superimposed on the DC component over the entire period. As a result, the effect on negative potential treatment is reduced.

  FIG. 5 is a diagram showing potential waveforms at the nodes C and F when the switch SA is turned off and the switch SB is turned on.

  FIG. 5A shows the potential waveform of node C when node A is grounded, and FIG. 5B shows the potential waveform of node C when node B is grounded. FIG. 5C shows the potential waveform of the node F when the node A is grounded, and FIG. 5D shows the potential waveform of the node F when the node B is grounded.

  As shown in FIG. 5A, when the node A is grounded, the AC voltage of the AC power supply AC appears at the node B. Therefore, the AC voltage at the node B is changed to the node C via the switch SB and the diode DB. Given to. Thereby, the potential of the node C has the same waveform as the AC voltage.

  As shown in FIG. 5B, when the node B is grounded, the ground potential of the node B is applied to the node C via the switch SB and the diode DB. Thereby, the potential of the node C becomes substantially constant at the ground potential.

  As shown in FIG. 5C, when the node A is grounded, the potential of the node F is changed to a potential that is reduced by the DC voltage VD2 between the node A and the node F from the ground potential. It has a waveform on which AC AC voltage is superimposed.

  As shown in FIG. 5D, when the node B is grounded, the potential of the node F is constant at a potential that is reduced by the DC voltage VD2 between the node A and the node F from the ground potential. Become.

  FIG. 6 is a diagram showing potential waveforms at nodes D and E when the switch SA is turned off and the switch SB is turned on.

  FIG. 6A shows the potential waveform of the node D when the node A is grounded, and FIG. 6B shows the potential waveform of the node D when the node B is grounded. FIG. 6C shows the potential waveform of the node E when the node A is grounded, and FIG. 6D shows the potential waveform of the node E when the node B is grounded.

  As shown in FIG. 6A, when the node A is grounded, the potential of the node D is lowered by 300 V of the Zener voltage of the Zener diode ZD1 from the potential of the node C having the same waveform as the AC voltage. Has a waveform. Thereby, the potential of the node D fluctuates about −300V.

  As shown in FIG. 6B, when the node B is grounded, the potential of the node D is a waveform obtained by reducing the zener voltage of the zener diode ZD1 by 300 V from the constant potential of the node C at a substantially ground potential. Have As a result, the potential of the node D becomes constant at about −300V.

  As shown in FIG. 6C, when the node A is grounded, the potential of the node E is 600V of the Zener voltage of the Zener diodes ZD1 and ZD2 from the potential of the node C having the same waveform as the AC voltage. Has a reduced waveform. Thereby, the potential of the node E fluctuates about −600V.

  As shown in FIG. 6D, when the node B is grounded, the potential of the node E is reduced by 600V of the Zener voltage of the Zener diodes ZD1 and ZD2 from the constant potential of the node C at a substantially ground potential. With a corrugated waveform. Thereby, the potential of the node E becomes constant at about −600V.

  FIG. 7 is a diagram showing potential waveforms at nodes C and F when the switch SA is on and the switch SB is off.

  FIG. 7A shows the potential waveform of node C when node A is grounded, and FIG. 7B shows the potential waveform of node C when node B is grounded. FIG. 7C shows the potential waveform of the node F when the node A is grounded, and FIG. 7D shows the potential waveform of the node F when the node B is grounded.

  As shown in FIG. 7A, when the node A is grounded, the ground potential of the node A is applied to the node C through the switch SA and the diode DA. Thereby, the potential of the node C becomes substantially constant at the ground potential.

  As shown in FIG. 7B, when the node B is grounded, the AC voltage of the AC power supply AC appears at the node A. Therefore, the AC voltage of the node A is changed to the node C via the switch SA and the diode DA. Given to. Thereby, the potential of the node C has the same waveform as the AC voltage.

  As shown in FIG. 7C, when the node A is grounded, the potential of the node F is changed to a potential that is reduced by the DC voltage VD2 between the node A and the node F from the ground potential. It has a waveform on which AC AC voltage is superimposed.

  As shown in FIG. 7D, when the node B is grounded, the potential of the node F is constant at a potential that is reduced by the DC voltage VD2 between the node A and the node F from the ground potential. Become.

  FIG. 8 is a diagram showing potential waveforms at nodes D and E when the switch SA is on and the switch SB is off.

  FIG. 8A shows the potential waveform of the node D when the node A is grounded, and FIG. 8B shows the potential waveform of the node D when the node B is grounded. FIG. 8C shows the potential waveform of the node E when the node A is grounded, and FIG. 8D shows the potential waveform of the node E when the node B is grounded.

  As shown in FIG. 8A, when the node A is grounded, the potential of the node D is a waveform obtained by reducing the Zener voltage of the Zener diode ZD1 by 300 V from the constant potential of the node C at a substantially ground potential. Have Thereby, the potential of the node D becomes constant at about −300V.

  As shown in FIG. 8B, when the node B is grounded, the potential of the node D is lowered by 300 V of the Zener voltage of the Zener diode ZD1 from the potential of the node C having the same waveform as the AC voltage. Has a waveform. Thereby, the potential of the node D fluctuates about −300V.

  As shown in FIG. 8C, when the node A is grounded, the potential of the node E is lowered by 600V from the Zener voltage of the Zener diodes ZD1 and ZD2 from the constant potential of the node C at a substantially ground potential. Has a waveform. Thereby, the potential of the node E becomes constant at about −600V.

  As shown in FIG. 8D, when the node B is grounded, the potential of the node E is 600V of the Zener voltage of the Zener diodes ZD1 and ZD2 from the potential of the node C having the same waveform as the AC voltage. Has a reduced waveform. Thereby, the potential of the node E fluctuates about −600V.

  In the negative potential treatment device according to the present embodiment, when the line L1 is connected to a non-live line, the switch SA is turned on and the switch SB is turned off by the ground detection device 11. As a result, as shown in FIG. 7A, the potential of the node C becomes substantially constant at the ground potential, and as shown in FIG. 8A, the potential of the node D becomes almost constant at −300 V. As shown in c), the potential of the node E becomes constant at about −600V.

  When the line L2 is connected to a non-live line, the switch SA is turned off and the switch SB is turned on by the ground detection device 11. Accordingly, as shown in FIG. 5B, the potential of the node C becomes substantially constant at the ground potential, and as shown in FIG. 6B, the potential of the node D becomes almost constant at −300 V, and FIG. As shown in d), the potential of the node E becomes substantially constant at −600V.

  As described above, in the negative potential treatment device according to the present embodiment, lines L1 and L2 are connected to one and the other of the non-live line and live line of AC power supply AC, respectively. As a result, the AC voltage of the AC power supply AC is rectified and boosted N times by the N-fold voltage rectifier circuit, and a negative voltage is generated at the node F.

  When the line L1 is connected to a non-live line of the AC power supply AC, an AC component is superimposed on the negative voltage generated at the node F. When the line L2 is connected to a non-live line of the AC power source AC, the negative voltage generated at the node F is constant.

  When the line L1 is connected to a non-live line of the AC power supply AC, the switch SA is turned on and the switch SB is turned off. As a result, the potential of the node C becomes almost the ground potential. When the line L2 is connected to a non-live line of the AC power supply AC, the switch SA is turned off and the switch SB is turned on. As a result, the potential of the node C becomes almost the ground potential.

  Further, the Zener diode ZD1 keeps a constant voltage between the node C and the node D, and the Zener diode ZD2 keeps a constant voltage between the node D and the node E. When an AC component is superimposed on the negative voltage generated at the node F, the AC component is absorbed by the resistor R1.

  Therefore, regardless of which of the lines L1 and L2 is connected to a non-live line of the AC power supply AC, the AC component is not superimposed on the negative potential, and a stable constant level negative potential is applied to the electroplating belt 400. .

  In this case, since the node C is always reliably grounded, safety is ensured. Further, since the switching circuit for connecting the line L1 or L2 connected to the non-live line to the anode terminal of the negative potential generating circuit is not required, the configuration is not complicated.

  Further, by using an N-fold voltage rectifier circuit composed of a plurality of diodes D1 to D6 and capacitors C1 to C6, diodes DA and DB, Zener diodes ZD1 and ZD2, and resistor R1, a transformer is not provided in the negative potential treatment device. A sufficiently high level of negative potential can be obtained. As a result, the negative potential treatment device can be reduced in size and cost. Moreover, since there is no leakage of the commercial frequency AC magnetic field from the transformer, the generation of electromagnetic waves due to the leakage magnetic field is prevented. Thereby, the influence which electromagnetic waves have on a human body and the surrounding environment can fully be prevented.

  Further, the Zener diodes ZD1 and ZD2 serve as a negative potential supply path to the electric floor belt 400. The zener diodes ZD1 and ZD2 have extremely low internal impedance when a constant voltage is generated. It works as a discharge path for negative static electricity, and the static electricity is removed. Thereby, unpleasant skin irritation caused by static electricity can be eliminated. The Zener diodes ZD1 and ZD2 function as a short-circuit path for a noise voltage source generated by an AC induction electric field or an unnecessary voltage source that disturbs the therapeutic negative potential. Furthermore, since negative potential fluctuations due to induction of negative static electricity are suppressed, the electroplating belt 400 can be held at a stable negative potential. As a result, stable and effective negative potential treatment can be realized.

  As a result, the AC component superimposed on the negative potential is removed regardless of the insertion direction of the power plug 1 by the user, the generation of electromagnetic waves is prevented with a simple configuration, and a stable constant level negative potential is safe and reliable. Can be supplied to.

  Further, when the grounding detection device 11 cannot detect a non-live line of the AC power supply AC, a negative potential in which a half-cycle pulsation component is superimposed on a stable DC component is given to the electric floor belt 400. . In this case, the influence on the negative potential treatment is reduced as compared with the negative potential in which the alternating current component of the entire period is superimposed on the direct current component.

  In the present embodiment, the line L1 corresponds to the first potential line, the line L2 corresponds to the second potential line, the resistor R1 corresponds to the load element or the resistance element, and the switch SA is the first potential line. The switch SB corresponds to the second switch, the diode DA corresponds to the first unidirectional conduction functional element or the first diode, and the diode DB corresponds to the second unidirectional conduction functional element. Or it corresponds to a 2nd diode, Zener diode ZD1, ZD2 corresponds to a constant voltage generation element, and the electric floor belt 400 corresponds to an electrode.

  When the ground detection circuit 11 operates normally, resistors may be provided in place of the diodes DA and DB. Also in this case, a sufficiently high level of negative potential can be stably applied to the electric floor belt 400.

  When both the switches SA and SB are on, a negative potential is generated at the nodes D and E in which a pulsating component having a half amplitude of the AC voltage of the AC power supply AC is superimposed on the DC component.

  Further, other load elements such as a diode may be used instead of the resistor R1.

  Further, the switches SA and SB and the ground detection circuit 11 may not be provided. In this case, as described above, a negative potential in which a half-cycle pulsation component is superimposed on the negative DC component is generated at the nodes D and E.

  The negative potential treatment device according to the present invention can be used for performing negative potential treatment on a human body.

It is a circuit diagram of the negative potential treatment device concerning one embodiment of the present invention. FIG. 2 is a circuit diagram of the negative potential generation circuit of FIG. 1. It is a figure which shows the electric potential waveform of a node in case both switches are on. It is a figure which shows the electric potential waveform of a node in case both switches are on. It is a figure which shows the potential waveform of a node when one side of a switch is OFF and the other side of a switch is ON. It is a figure which shows the potential waveform of a node when one side of a switch is OFF and the other side of a switch is ON. It is a figure which shows the electric potential waveform of a node when one side of a switch is on and the other side of a switch is off. It is a figure which shows the electric potential waveform of a node when one side of a switch is on and the other side of a switch is off.

Explanation of symbols

11 Ground detection device SA, SB switch DA, DB, D1, D2, D3, D4, D5, D6 Diode C1, C2, C3, C4, C5, C6 Capacitor R1 Resistance ZD1, ZD2 Zener diode 104 Changeover switch 100 Controller 101 Negative potential generation circuit D50 Heating / negative potential generation section 400 Electroplating band AC AC power supply

Claims (4)

First and second potential lines, N-fold voltage rectifier circuit (N is an integer of 2 or more), load element, first and second unidirectional conduction functional elements, one or more constant voltage generating elements, electrodes, A first and a second switch, and a ground detection device;
The first and second potential lines are respectively connected to one and the other of a ground side potential line and a non-ground side potential line of an AC power source,
The N-fold voltage rectifier circuit is connected to the first and second potential lines and generates a negative voltage to be applied to one end of the load element.
The anode of the first unidirectional conduction functional element is connected to the first potential line, the anode of the second unidirectional functional element is connected to the second potential line, and the first one The cathode of the directional conduction functional element and the cathode of the second unidirectional conduction functional element are connected to each other at a connection point;
The one or more constant voltage generating elements are connected in series between the other end of the load element and the connection point,
A negative potential generated by the one or more constant voltage generating elements is applied to the electrode;
The first switch is provided in a current path from the first potential line to the connection point via the first unidirectional conduction functional element,
The second switch is provided in a current path from the second potential line to the connection point via the second unidirectional conduction functional element,
The first and second unidirectional conducting functional elements are normally in a conducting state;
The ground detection device detects a potential line connected to the ground-side potential line of the AC power source among the first and second potential lines, and the first potential line is connected to the ground-side potential line. The second switch is turned off when it is connected, and the first switch is turned off when the second potential line is connected to the ground potential line. Potential therapy device. Said first unidirectional conducting functional element comprises a first diode, said second unidirectional conducting functional element negative electric potential therapy apparatus according to claim 1, characterized in that the second diode. Wherein one or more of the constant voltage generating device, negative potential therapy apparatus according to claim 1 or 2, wherein the of one or more zener diodes. Negative potential therapy apparatus according to any one of claims 1 to 3, wherein the load element is a resistive element.

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