JPH04371156A - Driving circuit for tapping massager - Google Patents

Abstract

PURPOSE:To provide a driving circuit of a massager by which pulse voltage applied to a solenoid can be almost the same even with different frequencies of an AC power supply and the width of time of the pulse voltage can be made variable. CONSTITUTION:A driving circuit for a tapping massager has a solenoid 1 which is connected to an AC power supply 24 and adapted to actuate an attachment for tapping a portion to be tapped, a phase control circuit 25 connected in series with the solenoid 1, a phase detection circuit 21 for generating detection signals which are syncronous with the AC power supply 24, and a drive signal generating circuit 22 which outputs a drive signal with a delay of a second set time for deciding the strength of tapping in half the cycle of the AC power supply from the zero cross point of the AC power supply in response to a detection signal produced when a first set time for deciding the speed of tapping is elapsed, thereby triggering the phase control circuit 25 on. The second set time is set in such a manner that the width of time from a drive signal of half the cycle of the AC power supply 24 to the zero cross point is the same as to changes in the frequency of the AC power supply.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive circuit for a tapping massage machine applied to health equipment for relieving stiff shoulders and the like.

0002

[Prior Art] As a first conventional example, two variable resistors are linked to determine the striking strength of the pulse voltage applied to an electromagnetic solenoid as the cycle that determines the beating speed becomes shorter. There was one in which the time width was shortened (for example, Japanese Patent Publication No. 55-26862).

As a second conventional example, in a signal generation circuit that generates a signal having an arbitrary phase independent of an AC power source using two variable resistors, the AC power source is rectified and a capacitor is charged to a certain voltage. Furthermore, by making the charging resistor variable, a signal having a delay time of an arbitrary phase was generated, and the striking strength was made arbitrarily variable, and the striking speed was also variable (for example, JP-A-60-4
No. 8747).

As a third conventional example, a pulse signal having a certain phase (time) is created by using a resistor and a capacitor using a DC voltage created by rectifying an AC power supply, and thereby
In the case of 0Hz, the time width of the pulse voltage applied to the electromagnetic solenoid is approximately equal to half a cycle of 60Hz, so that even if there is a difference in the frequency of the AC power supply (60/50Hz), the striking strength is the same regardless of the frequency. There are some methods that allow this to be obtained (for example, Japanese Patent Application Laid-open No. 141241/1983).

[0005]

[Problems to be Solved by the Invention] The first conventional example controls the striking speed and intensity in conjunction with each other so that the same striking feeling can be obtained even if the user changes the striking speed. By changing the resistance value for charging and discharging the capacitor, the time width of the pulse voltage applied to the electromagnetic solenoid can be varied in half-wave steps of the AC power supply, for example, in steps of (1/2) N times. The intensity can be changed step by step, but the frequency of the AC power supply (5
0/60Hz), the application time of the pulse voltage applied to the electromagnetic solenoid differs, and the application time in the case of 50Hz is longer than that in the case of 60Hz, so there is a problem that the tapping force as a tapping massage machine differs. there were. Also, since the power consumption of the electromagnetic solenoid differs depending on the frequency, the specified value of the coil temperature rise is set to 50H.
Although it is necessary to limit the frequency based on 60 Hz, there is a problem in that sufficient striking force may not be obtained at 60 Hz.

[0006] In the second conventional example, the user can arbitrarily vary the beating speed and intensity according to his/her preference, but the time width of the pulse voltage applied to the electromagnetic solenoid differs depending on the frequency of the AC power supply. . In addition, since the beating speed and intensity can be changed arbitrarily, there is a problem that when using a fast beating speed and a large beating intensity, the power consumption becomes very large and the coil temperature rises very high. there were.

[0007] In the third conventional example, the frequency is fixed at a half cycle of 60 Hz, and it is not possible to change the strength of the tapping massage machine by changing the time width of the pulse voltage applied to the electromagnetic solenoid. Also, if the beating speed is increased, the power consumption will increase and the coil temperature will rise.
There was a problem in that the striking speed could not be made very fast.

Therefore, an object of the present invention is to make it possible to make the time width of the pulse voltage applied to the electromagnetic solenoid almost the same even if the frequency of the AC power source is different, to make the time width of the pulse voltage variable, and to make it possible to make the time width of the pulse voltage variable. To provide a drive circuit for a tapping massage machine that allows a user to obtain the same tapping feeling regardless of the speed.

[0009]

[Means for Solving the Problems] A driving circuit for a tapping massage machine according to claim 1 includes an electromagnetic solenoid connected to an AC power source to operate an attachment for hitting a portion to be hit;
A phase control circuit connected in series to the electromagnetic solenoid, a phase detection circuit that generates a detection signal synchronized with the AC power source, and a phase detection circuit that receives the detection signal when a first set time that determines the beating speed has elapsed. a drive signal generation circuit that outputs a drive signal with a delay of a second set time that determines the striking strength within a half cycle from the zero-crossing point of the AC power source to trigger the phase control circuit to turn on; The set time is set so that the time width from the drive signal to the zero cross point of the half cycle of the AC power source remains the same with respect to changes in the AC power frequency.

[0010] According to a second aspect of the present invention, in the driving circuit of the tapping massage machine according to the first aspect, the first set time and the second set time of the drive signal generating circuit are set such that the first set time is short. The setting is such that the second set time becomes longer as the time increases.

[0011]

According to the driving circuit for the tapping massage machine according to the first aspect, the phase detection circuit generates a detection signal at each zero-crossing point of the AC power source, for example. On the other hand, when the drive signal generation circuit receives the detection signal after the first set time has elapsed, it outputs the drive signal with a delay of a second set time within a half cycle from the zero cross point of the AC power source. The phase control circuit turns on in response to a drive signal and turns off at the zero-crossing point. As a result, the pulse voltage of the AC power source is applied to the electromagnetic solenoid, and the electromagnetic solenoid operates to operate the attachment. In this case, the second set time is set so that the time width from the drive signal to the zero cross point at the end of the half cycle remains the same with respect to changes in the AC power frequency. Even if the pulse voltage is different, the time width of the pulse voltage applied to the electromagnetic solenoid can be made almost the same, and by adjusting the interval of the second set time of the drive signal generation circuit, the pulse voltage applied to the electromagnetic solenoid can be adjusted. Since the time width can be changed arbitrarily, almost the same hitting force can be obtained even if the frequency of the AC power source is different, and the hitting force can be changed.

According to the drive circuit for the tapping massage machine according to claim 2, in claim 1, the first set time and the second set time of the drive signal generation circuit are set to the first set time. Since the setting is such that the second setting time becomes longer as the second setting time becomes shorter, the striking strength decreases as the striking speed becomes faster, so that the user can enjoy the same striking feeling regardless of the striking speed. The feeling of use can be obtained with high accuracy. In addition, while obtaining the same striking strength regardless of the AC power frequency, the user can control the striking speed by linking the time width of the pulse voltage applied to the electromagnetic solenoid within a half cycle of the AC power supply to the cycle of the pulse voltage. Any hitting feeling such as strong, medium, or weak can be selected regardless of the hitting feeling.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 to 3. First, about the structure of the tataki 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 near the head cover 2, and the head cover 2 and the electromagnetic solenoid 1. It is composed of a connecting spring 4 that supports the handle 5 and a handle 5 that has a built-in drive circuit 19.

The electromagnetic solenoid 1 has a cylindrical coil frame 11.
An excitation coil 12 wound around the outer circumference of the excitation coil 1
A fixed iron core 13, which is an outer yoke of 2, is the main fixing member. The plunger 14 includes a movable core 15 housed within the coil frame 11 so as to be able to reciprocate, 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 core 13. has been done.

At the tip of the drive rod 16 of the plunger 14, there is an attachment 3 that can freely come into contact with a hit area such as the shoulder or waist.
is permanently installed. Further, a connecting member 4 is fixed to the fixed iron core 13, and this connecting member 4 has an elongated plate shape and has a predetermined spring constant. The handle part 5 has a switch 17 and a power cord 18
A drive circuit 19 that is connected to an AC power source, which is a commercial power source, and supplies an intermittent pulse voltage to the electromagnetic solenoid 1 is installed inside the drive circuit 19, and the other end of the connecting member 4 is installed in the front part. are connected and fixed.

To explain the operation, first connect the power cord 18 to an AC power source, hold the handle 5 in your hand,
When the attachment 3 comes into contact with a hit area such as the shoulder or waist, the plunger 14 slides from the state shown by the solid line in FIG. 2 to the position shown by the imaginary line. When the switch 17 is turned on, a pulse voltage is applied to the excitation coil 12 of the electromagnetic solenoid 1, a pulse current is supplied to the excitation coil 12, and the excitation coil 12 is excited, and the plunger 14 of the electromagnetic solenoid 1 performs a suction operation, resulting in a small mass and small inertia. The plunger 14 pushes the striking part, and this pushing force (pushing amount) passes through the attachment 3 and is applied to the striking part as a striking force, thereby performing the striking operation. 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 returning force (load) of the struck portion, returning to the state before the pulse voltage was applied to the excitation coil 12. . On the other hand, during the tapping operation, the fixed part of the electromagnetic solenoid 1, which has a large mass and large inertia relative to the plunger 14, moves up and down to some extent with respect to the tapped part due to the reaction force of the tapping force. By applying a pulse voltage to the excitation coil 12 of the electromagnetic solenoid 1, the plunger 14 pushes the tapping portion through the attachment 3, thereby performing a series of tapping operations.

Next, the drive circuit 1 of the tapping massage machine
9 will be explained based on FIG. That is, this drive circuit 19 includes an electromagnetic solenoid 1 that is connected to an AC power source 24 and operates an attachment 3 that hits the part to be hit.
, a phase control circuit 25 connected in series to the electromagnetic solenoid 1, a phase detection circuit 21 that generates a detection signal synchronized with the AC power source 24, and a phase control circuit 25 connected in series to the electromagnetic solenoid 1, a phase detection circuit 21 that generates a detection signal synchronized with the AC power supply 24, and Upon receiving the detection signal, the AC power supply 24
and a drive signal generation circuit 22 that outputs a drive signal with a delay of a second set time T2 that determines the striking strength within a half cycle from the zero crossing point of the second set time T2 and triggers the phase control circuit 25 to turn on. T2 is set so that the time width from the drive signal to the zero cross point of the half cycle of the AC power supply 24 is the same with respect to changes in the AC power supply frequency,
and the first set time T1 and the second set time T2 are set to the first set time T1 and the second set time T2.
As the setting time T1 becomes shorter, the second setting time T2 becomes shorter.
The relationship is set so that the relationship becomes longer.

Each circuit will be explained along with its operation. Note that each figure in FIG. 3 shows the waveform of the part displayed in FIG. 1. The phase detection circuit 21 is applied with a voltage from an AC power source 24 having a sinusoidal waveform as shown in FIG. 3(A). Since the diode D1 is connected between the base and emitter of the transistor Tr3, when the AC voltage is positive, the transistor T
A base current is supplied to r3 via the resistor R11, turning on the transistor Tr3. When the AC voltage is negative, no base current is supplied, so the transistor Tr3 turns off, and the collector of the transistor Tr3 has a current as shown in FIG. 3(B). A detection signal synchronized with the phase of the AC power supply 24 is generated. R10 is a resistor connected to the collector of the transistor Tr3.

Note that the Zener diode Vz1, capacitor C5, diode D2, and resistor R12 constitute a DC power source for the transistor Tr3, the drive signal generation circuit 22, and the like. The drive signal generation circuit 22 has the microcomputer IC1 as its main body, and determines the AC power frequency (50H) by measuring the period of the detection signal or the high or low time of the detection signal.
z/60Hz) and switches SW2 and SW3 to detect the hitting speed and hitting strength set by the user.
The first set time T1 and the second set time T2 corresponding to the striking speed at a predetermined striking strength are selected from a table (numerical table) in the storage unit corresponding to each frequency.

[0020] This table shows the first set time T1 and the second set time T1.
The set time T2 is determined to satisfy the above conditions. Here, the beating speed (rpm) is the beating speed/6
0 = Frequency of pulse voltage applied to electromagnetic solenoid 1 = (
1/T1), but the relationship between the beating speed (rpm) and the second time T2 (msec) is 300/0, 600/1.92, 1200/ when the frequency is 60 Hz and is "strong".
3.31,1800/3.85.

[0021] In the case of "weak", 300/4.16,600
/5.12,1200/5.82,1800/6.09
It is said that In addition, if the frequency is 50Hz and is set to “strong”, 30
0/1.30, 600/3.14, 1000/4.17
, 1500/4.77. For “weak”, 30
0/5.65, 600/6.57, 1000/7.08
, 1500/7.38.

[0022] Then, the first
Detection after the first set time T1 has elapsed based on the set time T1, that is, the period of the pulse applied to the electromagnetic solenoid 1, and the second set time T2, which determines the striking force, that is, the delay time from the zero-crossing point of the AC power source 24. Upon receiving the signal, it generates a drive signal delayed by a second set time T2 from the zero-crossing point of the AC power source 24, and outputs it to the phase control circuit 25. Therefore, from the table, the striking strength will be the same when detecting a frequency of 60 Hz and when detecting a frequency of 50 Hz,
Furthermore, if the striking strength is selected as either "strong" or "weak" at a specific frequency, the same striking feeling can be obtained even if the striking speed is different.

Note that resistors R6 and R7 and capacitor C3,
C4 and the oscillation element X1 provide an operating clock to the microcomputer IC1. Also, resistors R8 and R9 are input pull-up resistors, and resistors R4 and R5 and light emitting diode LE
D1 and LED2 are for displaying the operating status of the striking speed and striking strength. Further, the beating speed can be specified by increasing the number of times the switch SW2 is turned on or the number of switches, and known means are used to control reading of the table in the storage section, etc.

The phase control circuit 25 includes transistors Tr1,
Tr2, capacitor C2, and resistors R2 and R3 synchronize with the rising and falling points of the drive signal (see FIG. 3).
Generate a trigger signal as shown in (E) in Figure 3, and apply the first trigger signal to the thyristor SCR1 to make it conductive and send the electromagnetic solenoid 1 to the pulse width T3 (= half-wave time of AC power supply - delay) as shown in (E) in Figure 3. A pulse voltage of time T2) is applied.

Note that the resistor R1 and the capacitor C1 are a circuit for protecting the thyristor SCR1, and the thermostat Th1 shuts off the AC power supply 24 when the temperature of the excitation coil 12 of the electromagnetic solenoid 1 exceeds a certain specified value.
The purpose is to block the According to this embodiment, the electromagnetic solenoid is activated by detecting the AC power frequency of the AC power source 24 and changing the second set time T2 from the zero cross point of the AC power source 24 in accordance with the striking speed and intensity. By automatically adjusting the time width T3 of the pulse voltage applied to the electromagnetic solenoid, the time width T3 of the pulse voltage applied to The time width of the pulse voltage applied to 1 can be made almost the same time width regardless of the AC power frequency, and the same striking force can be obtained regardless of the AC power frequency (50/60Hz). Since the second set time T2 can be made arbitrarily variable, the user can also arbitrarily change the striking force according to his/her preference.

Furthermore, as the period of the pulse voltage applied to the electromagnetic solenoid 1, that is, the first set time T1 becomes shorter, the second set time T1 from the zero cross point of the AC power supply becomes shorter.
By increasing 2, the time width T3 of the pulse voltage applied to the electromagnetic solenoid 1 becomes shorter, and as the tapping speed becomes faster (as the first set time T1 becomes shorter), the tapping force becomes smaller. The user can accurately obtain the same tapping feeling (feeling of use) regardless of the condition. Further, the second set time T2 allows the user to have an arbitrary tapping feeling (feeling of use: strong/medium/weak, for example) regardless of the beating speed. Also, if the striking strength ratio is set to strong/medium/weak, then medium = 0.7 x strong and weak = 0.5 x strong, regardless of the hitting speed. . Furthermore, strong/medium/weak settings can be arbitrarily set to suit human sensibility.

Furthermore, as in this embodiment, by using a table to express the relationship, data changes can be made to create complex pulse voltages (first set time T1 and second set time T2).
It is also possible to change the voltage automatically, or to use multiple pulse trains instead of a simple pulse voltage. Furthermore, by providing the relationship between the first set time T1 and the second set time T2 using a table, the beating speed can be set at intervals that are felt to be equally spaced by the human senses, according to a Stephens power function, etc. , and the striking strength is also the second highest.
The setting time T2 has the effect that it can be set so that it feels equally spaced according to the human sensibility.

Furthermore, since a pulse voltage can be applied to the electromagnetic solenoid 1 based on the AC power frequency and the tapping speed, the power consumption of the electromagnetic solenoid 1 can be made the same regardless of the AC power frequency and the tapping speed. The provider can apply full power to the electromagnetic solenoid 1 regardless of the AC power frequency or beating speed when suppressing the coil temperature rise to a certain specified value, so the power of the electromagnetic solenoid 1 can be maximized. .

In this embodiment, the present invention is a handy massage machine that is held in the hand of the user, but the present invention may be applied to other large massage machines such as chairs and beds.

[0030]

According to the drive circuit for a tapping massage machine according to claim 1, the phase detection circuit generates a detection signal synchronized with an AC power source, and the drive signal generation circuit generates a detection signal synchronized with the AC power supply, and the drive signal generation circuit generates a detection signal synchronized with the AC power supply. The detection signal generates a drive signal with a second set time delay within a half cycle from the zero-crossing point of the AC power supply, and turns on the phase control circuit, which applies the pulse voltage of the AC power supply to the electromagnetic solenoid, causing the electromagnetic solenoid to operates and activates the attachment, but the second
The set time is set so that the time width from the drive signal to the zero cross point at the end of the half cycle remains the same regardless of changes in the AC power frequency, so even if the AC power frequency differs, the electromagnetic solenoid The time width of the pulse voltage applied to the electromagnetic solenoid can be made almost the same, and by adjusting the second setting time interval of the drive signal generation circuit, the time width of the pulse voltage applied to the electromagnetic solenoid can be arbitrarily set. Since it can be changed, it has the effect that almost the same striking force can be obtained even if the frequency of the AC power source is different, and that the striking force can also be changed.

According to the drive circuit for the tapping massage machine according to claim 2, in claim 1, the first set time and the second set time of the drive signal generation circuit are set to the first set time. Since the setting is such that the second setting time becomes longer as the second setting time becomes shorter, the striking strength decreases as the striking speed becomes faster, so that the user can enjoy the same striking feeling regardless of the striking speed. The feeling of use can be obtained with high accuracy. In addition, while obtaining the same striking strength regardless of the AC power frequency, the user can control the striking speed by linking the time width of the pulse voltage applied to the electromagnetic solenoid within a half cycle of the AC power supply to the cycle of the pulse voltage. Any hitting feeling such as strong, medium, or weak can be selected regardless of the hitting feeling.

[Brief explanation of drawings]

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

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

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

[Explanation of symbols]

1 Electromagnetic solenoid 21 Phase detection circuit 22 Drive signal generation circuit 24 AC power supply 25 Phase control circuit

Claims (2)

[Claims] 1. An electromagnetic solenoid connected to an alternating current power source to operate an attachment that strikes a striking part, a phase control circuit connected in series to the electromagnetic solenoid, and a phase control circuit that generates a detection signal synchronized with the alternating current power source. a detection circuit; and a drive signal delayed by a second set time that determines the beating strength within a half cycle from the zero cross point of the AC power supply in response to the detection signal when the first set time that determines the beating speed has elapsed; a drive signal generation circuit that outputs a signal to trigger the phase control circuit to turn on, and the second set time is such that the time width from the drive signal to the zero cross point of a half cycle of the AC power supply is a change in the AC power frequency. The drive circuit of the tataki massage machine is set to be the same for both. 2. The first setting time and the second setting time of the drive signal generation circuit are such that as the first setting time becomes shorter, the second setting time becomes longer. The drive circuit for a tapping massage machine according to claim 1, wherein the drive circuit is set to .