JP2866493B2 - Drive circuit of tapping massage machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving circuit for a beating massage machine applied to a health device for eliminating stiff shoulders and the like.

[0002]

2. Description of the Related Art As a first conventional example, an AC power supply is rectified to charge a capacitor to a certain voltage, and the charging resistance is varied to set a delay time from the zero cross point of the AC power supply. In some cases, a signal having an arbitrary phase delay is generated from the signal, and then a pulse voltage is applied to an electromagnetic solenoid (for example, Japanese Patent Publication No. 55-26862 and Japanese Patent Application Laid-Open No. 60-48747).

As a second conventional example, a pulse signal having a certain phase (time) is generated by using a resistor and a capacitor by using a DC voltage generated by rectifying an AC power supply.
In the case of 0 Hz, the time width of the pulse voltage applied to the electromagnetic solenoid is made substantially equal to a half cycle of 60 Hz, and even if there is a difference in the frequency (60/50 Hz) of the AC power supply, the same tapping force is applied regardless of the frequency. Some of them were obtained (for example, JP-A-55-141241).

[0004]

In the first conventional example, when the frequency (50/60 Hz) of the AC power supply is different, the application time of the pulse voltage applied to the electromagnetic solenoid is different.
Since the application time in the case of 0 Hz is longer than that in the case of 60 Hz, there is a problem that the tapping force as the tapping massage machine is different. In addition, since the power consumption of the electromagnetic solenoid differs depending on the frequency, it is necessary to limit the specified value of the temperature rise of the coil to 50 Hz, but as a result, sufficient tapping force may not be obtained at 60 Hz. There was a problem.

In the second conventional example, since it is fixed to a half cycle of 60 Hz, the tapping force as a tapping massage machine cannot be changed by changing the application time of the pulse voltage applied to the electromagnetic solenoid. There was a point. Therefore, an object of the present invention is to provide a driving circuit for a tapping massage machine that can make the pulse voltage applied to the electromagnetic solenoid substantially the same even if the frequency of the AC power source is different and that can vary the time width of the pulse voltage. That is.

[0006]

A drive circuit for a tapping massage machine according to the present invention comprises: an electromagnetic solenoid connected to an AC power supply for operating an attachment for tapping a tapping portion;
A driver circuit connected to the electromagnetic solenoid in series to control the electromagnetic solenoid, a phase detection circuit for generating a detection signal synchronized with the AC power supply, and a synchronization circuit with the detection signal when a first set time has elapsed. A control signal generating circuit for generating a control signal, receiving the control signal, outputting a drive signal having a pulse width of a second set time to the driver circuit, and turning on the driver circuit during the second set time And a drive signal generation circuit.

[0007]

According to the structure of the present invention, the phase detection circuit generates a detection signal for each zero point of the AC power supply, for example. On the other hand, the control signal generation circuit outputs a control signal when receiving the detection signal when the first set time has elapsed. The drive signal generation circuit receives the control signal, generates a drive signal having a second set time width, and turns on the driver circuit during the period. Therefore, the pulse voltage of the AC power supply corresponding to the second set time interval of the drive signal generation circuit is applied to the electromagnetic solenoid from the zero point of the AC power supply after the lapse of the first set time by the control signal generation circuit. Thereby, the electromagnetic solenoid operates to operate the attachment.

In this case, even if the frequency of the AC power supply is different, the time width of the pulse voltage applied to the electromagnetic solenoid can be made substantially the same, and the interval of the second set time of the drive signal generation circuit is adjusted. Thus, the width of the pulse voltage applied to the electromagnetic solenoid can be changed arbitrarily, so that even if the frequency of the AC power supply is different, substantially the same tapping force can be obtained and the tapping force can be changed.

[0009]

An embodiment of the present invention will be described with reference to FIGS. First, about the structure of the tapping massage machine,
As shown in FIG. 2, an electromagnetic solenoid 1, a head cover 2 that covers the electromagnetic solenoid 1, an attachment 3 that is a beating ball mechanically connected to the electromagnetic solenoid 1 in the vicinity of the head cover 2, the head cover 2 and the electromagnetic solenoid 1 And a handle portion 5 having a drive circuit 19 built therein.

The electromagnetic solenoid 1 has a cylindrical coil frame 11.
The exciting coil 12 wound around the outer periphery of the
A fixed core 13 which is a yoke on the outer side of 2 is a main fixing member. The plunger 14 includes a movable core 15 housed in the coil frame 11 so as to be reciprocally movable, and a drive rod 16 fixed to one end of the movable core 15 and inserted through a through hole in the center of the fixed iron 13. Have been.

At the tip of the drive rod 16 of the plunger 14, an attachment 3 that can freely contact a struck portion such as a shoulder or waist.
Is fixed. A connecting member 4 is fixed to the fixed iron core 13, and the connecting member 4 has an elongated plate shape and has a predetermined spring constant. The handle 5 includes a switch 17 and a power cord 18.
And a driving circuit 19 connected to an AC power supply which is a commercial power supply for supplying an intermittent pulse voltage to the electromagnetic solenoid 1 is provided therein. Are connected and fixed.

The operation will be described. First, the power cord 18 is connected to the AC power supply, and the handle 5 is held in hand.
When the attachment 3 comes into contact with a struck portion such as a shoulder or a waist, the plunger 14 slides from a state shown by a solid line in FIG. 1 to a position shown by an imaginary line. When the switch 17 is turned on, a pulse voltage is applied to the exciting coil 12 of the electromagnetic solenoid 1 and a pulse current is supplied to the exciting coil 12. The plunger 14 of the electromagnetic solenoid 1 performs a suction operation, and the plunger 14 having a small mass and a small inertia is covered. The striking part is pushed in, and the pushing force (the pushing amount) is applied to the struck part through the attachment 3 as the striking force, and the striking operation is performed. Further, since a pulse voltage is applied to the excitation coil 12, after the pulse voltage ends, the plunger 14 is pushed back by the return force (load) of the hit portion, and returns to the state before the pulse voltage was applied to the excitation coil 12. . On the other hand, at the time of the tapping operation, the fixed portion of the electromagnetic solenoid 1 having a large mass and a large inertia with respect to the plunger 14 slightly moves up and down with respect to the hit portion due to the reaction force of the tapping force. By applying a suitable pulse voltage to the exciting coil 12 of the electromagnetic solenoid 1, the plunger 14 pushes the hit portion through the attachment 3 to perform a series of tapping operations.

Next, the driving circuit 1 of the tapping massage machine
9 will be described with reference to FIG. That is, the drive circuit 19 is connected to the AC power supply 24 and operates the electromagnetic solenoid 1 that operates the attachment 3 that strikes a hit portion.
A driver circuit 25 connected in series to the electromagnetic solenoid 1 to control the electromagnetic solenoid 1;
A phase detection circuit 21 for generating a detection signal synchronized with the control signal, a control signal generation circuit 22 for generating a control signal in synchronization with the detection signal when the first set time has elapsed, and a second A drive signal generating circuit 23 that outputs a drive signal having a width of a set time to the driver circuit 25 and turns on the driver circuit 25 during a second set time.

Each circuit will be described together with its operation. Each figure in FIG. 3 shows the waveform of the part displayed in FIG. The phase detection circuit 21 is applied with a voltage of an AC power supply 24 having a sine wave waveform as shown in FIG. 3A, and when the AC voltage is positive, a base current is supplied to the transistor Tr3 via the resistor R11. Tr3 is turned on. When the AC voltage is negative, the base current is not supplied, so that the transistor Tr3 is turned off. The ON / OFF signal of the transistor Tr3 is shaped by the capacitors C6 and C5 and the resistors R6 to R10 to generate a detection signal synchronized with the phase of the AC power supply 24 as shown in FIG. D ₃ is a diode.

The control signal generating circuit 22 charges the capacitor C4 as shown in FIG. 3C by a time constant determined by the capacitor C4 for setting the first set time and the resistors R4 and R5, and sets the potential of the capacitor C4. Instantaneously becomes equal to the potential of the detection signal, the output (the third pin) of the integrated circuit IC2 becomes low (zero potential), and then the capacitor C4
The capacitor C4 discharges with a time constant determined by the resistor R4 and the threshold value of the integrated circuit IC2, and the output of the integrated circuit IC2 becomes high (control power supply voltage). This output signal is shaped into a waveform by the capacitor C3 and the resistor R3 to generate the control signal shown in FIG. Interval T1 of the first set time be set to a given time to adjust i.e. variable resistor R5 by the variable capacitors C4 and resistors R4 + R5.

The drive signal generation circuit 23 receives the control signal in the negative direction of FIG. 3D and sets the capacitor C2 based on the time constant of the capacitor C2 for setting the second set time and the resistor R2.
3 (e), and the output (pin 3) of the integrated circuit IC1 becomes high for the second set time interval T2 until the threshold value of the integrated circuit IC1 is reached.
The drive signal of (f) is created. The second set time interval T2 can be set to an arbitrary time width by changing the time constant of the capacitor C2 and the resistor R2, that is, by adjusting the variable resistor R2. C ₁ is a capacitor.

The driver circuit 25 includes transistors Tr1 and Tr1.
Tr2, resistor R1, and FET1.
FE only during the time interval T2 based on the drive signal of (f).
T1 is made conductive. Therefore, the electromagnetic solenoid 1
A pulse voltage having a second set time interval T2 shown in FIG. 3 (g) is applied to the exciting coil 12 of FIG.

The diode D4 and the resistor R1 shown in FIG.
2, a capacitor C7 and a zener diode Vz1 constitute a control power supply for the drive circuit 19. The D ₁ a diode for rectification connected in series to the electromagnetic solenoid 1, D2 is a diode for surge absorption of electromagnetic solenoid 1, regulations value thermoswitch Th1 have a temperature rise of the exciting coil 12 of the electromagnetic solenoid 1 In this case, the AC power supply 24 is shut off.

As described above, the pulse voltage is applied to the electromagnetic solenoid 1 in synchronization with the frequency of the AC power supply 24 and during the interval T2 of the second set time from the zero cross point from negative to positive of the AC power supply 24. AC power supply 2
Since the application time of the pulse voltage to the electromagnetic solenoid 1 can be the same even if the frequency (50/60 Hz) of
The tapping force as the tapping massage machine can be made the same, and the interval T2 of the second set time can be set arbitrarily by changing the capacitor C2 and the resistance R2. You can adjust the tapping force to your liking.

Further, since the same pulse voltage can be applied regardless of the frequency of the AC power supply 24, the power consumption of the electromagnetic solenoid 1 can be made the same regardless of the frequency.
The device providing side can set so that the power of the electromagnetic solenoid 1 is fully exerted when the temperature rise of the exciting coil 12 is suppressed to a certain prescribed value. In this embodiment, the hand-held massage machine is used by being held by the user, but may be applied to other large-sized massage machines such as chairs and beds.

[0021]

The driving circuit of the tapping massage machine according to the present invention includes an electromagnetic solenoid connected to an AC power supply for operating an attachment tapping a hitting portion, and a driver connected in series with the electromagnetic solenoid to control the electromagnetic solenoid. A circuit, a phase detection circuit that generates a detection signal synchronized with the AC power supply, a control signal generation circuit that generates a control signal in synchronization with the detection signal when a first set time has elapsed, and Receiving a drive signal having a pulse width of a second set time and outputting the drive signal to the driver circuit to turn on the driver circuit during the second set time. Therefore, the time width of the pulse voltage applied to the electromagnetic solenoid can be made substantially the same, and the second set time interval of the drive signal generation circuit can be set. By adjusting, since the width of the pulse voltage applied to the electromagnetic solenoid can be arbitrarily changed, there is an effect that it is possible to vary the beating force with substantially the same beating force be different frequencies of the AC power source is obtained.

[Brief description of the drawings]

FIG. 1 is a drive circuit diagram of a tapping massage machine according to one embodiment of the present invention.

FIG. 2 is a sectional view of the entire structure.

FIG. 3 is a waveform diagram of each part of the circuit.

[Description of Signs] 1 electromagnetic solenoid 21 phase detection circuit 22 control signal generation circuit 23 drive signal generation circuit 24 AC power supply 25 driver circuit

Claims (1)

(57) [Claims] 1. An electromagnetic solenoid connected to an AC power supply for operating an attachment for hitting a hit portion, a driver circuit connected in series with the electromagnetic solenoid for controlling the electromagnetic solenoid, and a detection signal synchronized with the AC power supply. , A control signal generating circuit that generates a control signal in synchronization with the detection signal when a first set time has elapsed, and a pulse width of a second set time that is received in response to the control signal. A drive signal generating circuit for outputting a drive signal to the driver circuit and turning on the driver circuit during the second set time.