JPH0718232Y2 - Acoustic vibration device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention generates a vibration that can be experienced by a vibrating means based on the level of an input audio signal, and applies this vibration to the human body to perform massage. The present invention relates to an acoustic vibration device capable of controlling the vibration, and more particularly to a control configuration of the vibration means.

[Background technology]

Previously, the inventors of the present invention filed a utility model registration application for an acoustic vibration device having the following structure (actual application Sho 63
-46095 (Actual Kaihei 1-149198)). In this acoustic vibrating device, a vibrating means, for example, an eccentric motor, whose vibration is changed according to the magnitude of the applied voltage, is provided in the cylindrical body, and is composed of, for example, a plurality of transistors in series with the vibrating means. A variable resistance element is connected. Further, it has a plurality of comparing means to which the audio signal and the reference level of different value are respectively supplied, and these comparing means, when the audio signal is larger than the inputted reference level, the output signal is in the first state. And the output signal is in the second state when the audio signal is lower than the reference level. The output of each of these comparison means is supplied to each variable resistance element via a photo coupler. These photocouplers reduce the resistance value of the corresponding variable resistance means when the output signal in the first state is supplied from the comparison means. Therefore, when the level of the audio signal is high and the number of comparing means in which the output signal is in the first state is large, the number of variable resistance means having a small resistance value is increased and is supplied to the vibrating means. The DC voltage increases and the vibration increases. On the other hand, when the level of the audio signal is low and the number of the comparing means whose output signal is in the first state is small, the number of the comparing means whose resistance value is small is reduced and supplied to the vibrating means. DC voltage is reduced and vibration is reduced. Massage is performed by applying the vibration generated in this way to the human body.

[Problems to be Solved by the Invention] However, in such an acoustic vibration device, since the vibrating means and each variable resistance element are connected in series, when the vibrating means causes, for example, a short-circuit failure, There is a problem in that a current flows through each variable resistance element and may damage them. Also, since the vibrating means and each variable resistance element are connected in series, the same current flows through each variable resistance element, and heat generation due to circuit loss cannot be dispersed. Further, in this acoustic vibration device, since the output signal from the comparison means is supplied to each variable resistance element by using the photocoupler, the circuit configuration is complicated.

It is an object of the present invention to provide an acoustic vibration device that solves the above problems.

[Means for Solving the Problems] In order to achieve the above-mentioned object, in the present invention, the vibrating means is provided in the cylindrical body as in the conventional one. The vibration is changed according to the size of. A parallel circuit is provided in series with the vibrating means, and the parallel circuit includes at least two first and second variable resistance means. Each of these variable resistance means has a control terminal, and when a first control signal is supplied to this control terminal, it is in a first resistance state, and when a second control signal is supplied, it is a first resistance. A second resistance state is obtained in which the resistance value is smaller than the state. A control signal is supplied from the control means to the control terminals of these variable resistance means. The control means supplies the first control signal to the control terminal of the first variable resistance means when the audio signal is smaller than the first threshold, and the audio signal is larger than the first threshold and the second
When the audio signal is larger than the second threshold and smaller than the third threshold, the first control signal of the first variable resistance means is supplied to the control terminal of the first variable resistance means. A second control signal is supplied to the control terminal of the variable resistance means and a first control signal is supplied to the control terminal of the second variable resistance means, and when the audio signal is larger than the third threshold value, the first and It is configured to supply a second control signal to the control terminal of the second variable resistance means.

As a preferable mode of the control means, there is one including a comparison means and a control signal generation means. The comparison means has at least four output terminals, that is, first to fourth output terminals, and is configured to operate as the following four. That is, (1) when the audio signal is smaller than the first threshold value, the first output terminal is set to the first state and the second to fourth output terminals are set to the second state. (2) When the audio signal is larger than the first threshold value and smaller than the second threshold value, the second output terminal is set to the first state and the first, third and fourth output terminals are set to the second state. State. (3) When the audio signal is larger than the second threshold value and smaller than the third threshold value, the second and third output terminals are set to the first state, and the first and fourth output terminals are set to the second state. State. (4) When the audio signal is larger than the third threshold value, the second and fourth output terminals are set to the first state,
The first and third output terminals are in the second state. The control signal generating means is connected to the first and second output terminals of the comparing means and to the control terminal of the first variable resistance means.
Second energizing element connected between the third and fourth output terminals of the comparing means and the control terminal of the second variable resistance means.
And at least the current-carrying element of (1), and are configured to operate in the following four ways. That is, (1) when the first output terminal is in the first state, the first control signal is supplied to the control terminal of the first variable resistance means. (2) When the second output terminal is in the first state, the second control signal is supplied to the control terminal of the first variable resistance means. (3) When the third control terminal is in the first state, the control terminal of the second variable resistance means has the first
Supply the control signal of. (4) When the fourth control terminal is in the first state, the second control signal is supplied to the control terminal of the second variable resistance means.

[Action]

According to the present invention, when the audio signal is smaller than the first threshold value, the first output terminal of the comparison means is in the first state, so that the control signal generation means is connected to the control terminal of the first variable resistance element. Providing a first control signal. As a result, the first variable resistance element enters the first resistance state, a current corresponding to the first resistance state flows into the vibrating means, and vibration according to the current is transmitted to the cylindrical body. In addition, the voice signal has a first threshold value and a second threshold value.
The second terminal of the comparing means is
In this state, the control signal generating means supplies the second control signal to the control terminal of the first variable resistance element. As a result, the first variable resistance element enters the second resistance state. Since the second resistance state has a smaller resistance value than the first resistance state, a current larger than that in the first resistance state flows into the vibrating means, and the vibration transmitted to the tubular body is the voice signal of the first state. It is larger than when it is smaller than the threshold. Further, when the audio signal is between the second threshold value and the third threshold value, the second terminal and the third terminal of the comparing means are in the first state, so that the control signal generating means is the first A second control signal is supplied to the control terminal of the variable resistance means, and a first control signal is supplied to the control terminal of the second variable resistance means.
Supply the control signal of. Therefore, the current flowing through the vibrating means flows more than when the audio signal is between the first threshold value and the second threshold value, and the vibration transmitted to the tubular body becomes large. Further, when the audio signal is larger than the third threshold value, the second output terminal and the fourth output terminal of the comparison means are in the first state, so that the control signal generation means is the first and second output terminals. Both the variable resistance means are set to the second resistance state. Therefore, the current flowing through the vibrating means is larger than that when the audio signal is between the second and third threshold values, and the vibration generated in the tubular body is large.

〔Example〕

In FIG. 2, reference numeral 10 denotes a tubular body, for example, a pipe made of stainless steel or aluminum having a length of 30 to 40 cm and a circular or elliptical longitudinal section. A vibrating means 14 is provided at the center of the tubular body through a spacer 12. This vibrating means is composed of, for example, a DC motor 16 and a weight 18 eccentrically attached to its rotation shaft. When the rated current is supplied to this DC motor 16, the vibrating means 14
Causes vibration at a natural frequency determined by the weight and diameter of the weight 18, but when the supplied current exceeds the rated current, it causes vibration at a higher frequency than the natural frequency,
If the supplied current is smaller than the rated current, vibration occurs at a frequency lower than the natural frequency. This vibration is transmitted to the tubular body 10, and by contacting, for example, one end of the tubular body 10 with the human body, the vibration can be transmitted to the human body and massage can be performed.

As shown in FIG. 1, one terminal of the DC motor 16 is grounded, and the other terminal is connected to variable resistance means connected in parallel to each other, for example, collectors of PNP transistors 20, 22, 24 having the same characteristics, The emitters of these transistors 20, 22, 24 are connected to the power supply line + V via resistors 26, 28, 30 respectively.

The bases, which are the control terminals of these transistors 20, 22, 24, are connected to the control means 32. This control means
Reference numeral 32 is a control signal generating means 34, 36, 38 and a comparing means.
IC40, for example IR2E27A (made by Sharp Corporation) is included.

The control signal generating means 34 includes a diode 42 whose anode is connected to the power supply line, and the cathode of the diode 42 is connected to the base of the transistor 20 via a resistor 44,
This base is connected to the sixth terminal of IC40. Further, the control signal generating means 36 includes a diode 46 having an anode connected to the power supply line + V, the cathode of the diode 46 is connected to one end of a series circuit of resistors 48 and 50, and the other end of the series circuit is the transistor 22. It is connected to the base of the IC40 and is also connected to the ninth terminal of the IC40. Further, the interconnection point of resistors 48, 50 is connected to the seventh terminal of IC40. Further, the control signal generating means 38 includes a diode 52 whose anode is connected to the power supply line, the cathode of this diode 52 is connected to one end of a series circuit composed of resistors 54 and 56, and the other end of the series circuit is It is connected to the base of the transistor 24 and also to the 11th terminal of the IC 40. In addition, the interconnection point of resistors 54 and 56 is
It is connected to 10 terminals. The resistors 48, 50, 54,
The resistance of 56 is chosen to be equal and the diodes 42, 46, 52 are of the same nature.

The IC40 is originally an LED driver of 5 dots × 2 channels, and its 1 channel has a threshold voltage V ₁ formed by internally dividing the voltage supplied to the 16th terminal from the audio signal supplied to the 12th terminal. , V ₂ , V ₃ , V ₄ , V ₅ have _five comparators for comparison, the outputs of which are connected to a constant current source. When the audio signal V _S is higher than the threshold voltage V _{1 and} lower than V ₂ , the sixth terminal is turned on,
The constant current I ₁ will be absorbed. When the audio signal is higher than the threshold voltage V _{2 and} lower than V ₃ , the sixth terminal and the seventh terminal are turned on, and a constant current I ₁ is drawn from each of them. When the audio signal V _S is higher than the threshold voltage V _{3 and} lower than V ₄ , the sixth terminal and the ninth terminal are turned on, and the constant current I ₁ is drawn from each of them. Also, if the voice signal is larger than the threshold voltage V ₄ and V ₅
When it is smaller than the above, the sixth terminal, the ninth terminal, and the tenth terminal are turned on, and a constant current I ₁ is drawn from each of them. When the audio signal V _S is higher than the threshold voltage V ₅ , the sixth terminal, the ninth terminal, and the eleventh terminal are turned on, and a constant current I ₁ is drawn from each of them.

Also in the other channel of the IC 40, the audio signal V _S supplied to the 14th terminal (this audio signal is the same as the audio signal supplied to the terminal) is applied to the above-mentioned threshold voltage.
Compared with V ₁ , V ₂ , V ₃ , V ₄ , and V ₅ , when V ₁ <V _S <V ₂ , the fifth terminal is turned on and a constant current I ₁ is absorbed, and V ₂ <V _S <
When V _{3 is set} , the fourth terminal and the fifth terminal are turned on, a constant current I ₁ is respectively absorbed from them, and when V ₃ <V _S <V ₄ , the third terminal and the fifth terminal are turned on, and Sinks a constant current I ₁ from each of them, and turns on the second terminal, the third terminal and the fifth terminal when V ₄ <V _S <V ₅ ,
From these, a constant current I ₁ is absorbed, and when V _S > V ₅ , the first terminal, the third terminal and the fifth terminal are turned on, and the constant current I ₁ is respectively absorbed. The cathode of the light emitting diode 43 is connected to the fifth terminal,
The terminal of the light emitting diode 45 cathode and the light emitting diode
The anode of 47 is connected, and the cathode of the light emitting diode 47 is connected to the third terminal. The cathode of the light emitting diode 49 and the anode of the light emitting diode 51 are connected to the second terminal, and the cathode of the light emitting diode 51 is connected to the first terminal. In addition, the light emitting diodes 43, 45, 49
Is connected to the power supply line + V. Therefore, when V ₁ <V _S <V ₂ , the light emitting diode 43 emits light and V ₂ <
When V _S <V _3, the light emitting diodes 43 and 45 emit light, and V ₃ <V _S <
At V _4, the light emitting diodes 43, 45, 47 emit light, and V ₄ <V _S <
At V _5, the light emitting diodes 43, 45, 47, 49 emit light and V _S >
At V _5, the light emitting diodes 43, 45, 47, 49, 51 light up.

When V ₁ <V _S <V ₂ , the 6th terminal is turned on,
A constant current I ₁ is absorbed by IC40. At this time, the potential difference V _42-44 between the base of the transistor 20 and the power supply line + V
Is the sum of the potential difference VD at the diode 42 and the potential difference at the resistor 44. The potential difference of the resistor 44 is the resistance value of the resistor 44.
If R ₄₄ and the base current are I _b , then R ₄₄ (I ₁ −I _b ).
The collector current I _C20 of the transistor 20, so can be regarded as substantially equal to the emitter current, transistor from V _42-44 20
Subtract the potential difference V _be between the base and emitter of
It becomes the value divided by the resistance value R ₂₆ of. That is, Becomes Here _Ib is chosen to be negligible, and VD and
Since it can be regarded as equal to V _be , I _C20 = R ₄₄ I ₁ / R ₂₆ , which flows to the DC motor 16, the DC motor 16 rotates, and the vibration is transmitted to the tubular body 10.

When V ₂ <V _S <V ₃ , the sixth and seventh terminals of IC40 are in the ON state. Since the sixth terminal is in the ON state, I _C20 flows as described above. Further, since the seventh terminal is on, I ₁ is sucked into this seventh terminal. At this time, the potential difference V _46-50 between the power supply line + V and the base of the transistor 22 is a value obtained by subtracting the potential difference of the resistor 50 (resistance value R ₅₀ ) from the sum of the potential difference VD of the diode 46 and the potential difference of the resistor 48. is there. Then, the collector current I of the transistor 22
_C221 is a value obtained by subtracting the potential difference V _be between the base and emitter of the transistor 22 from V _46-50 and dividing this by the resistance value R ₂₈ of the resistor ₂₈ . That is, Becomes Now choose I _b to a negligible value, and
Since it can be regarded as equal to V _be , I _C221 becomes I _C221 = R ₄₈ I ₁ / R ₂₈ . The sum of I _C221 and I _C20 flows to the DC motor 16. That is, the current flowing through the DC motor 16 is larger than when V ₁ <V _S <V ₂ , and the vibration transmitted to the tubular body 10 is large.

When V ₃ <V _S <V ₄ , the sixth and ninth terminals of IC40 are turned on. At this time, since the sixth terminal is on, I _C20 flows. Further, the ninth terminal because it is on, the ninth terminal I ₁ is drawn. At this time, the current I _C222 flowing in the collector of the transistor 22 is the potential difference VD + (R ₄₈ + R) between the power supply line + V and the base of the transistor 22.
₅₀₎ a (value a value obtained by subtracting the voltage difference V _be divided by R ₂₈ between the base and emitter of I ₁ -I _b) from the transistor 22.
That is, Becomes Here, select _Ib to a negligible value, and set VD and _Vbe
Can be regarded as equal to, I _C222 becomes I _C222 = (R ₄₈ + R ₅₀ ) I ₁ / R ₂₈ . Since R ₄₈ and R ₅₀ are chosen equal, I
_C222 has exactly twice the current as I _C221 . Therefore,
2I _C221 + I _C20 will flow to the DC motor 16,
The vibration becomes even larger.

Further, when V ₄ <V _S <V ₅ , the sixth, ninth and tenth terminals of the IC 40 are turned on. Since the sixth terminal and the ninth terminal are in the ON state, I _C20 flows in the transistor 20 and I _C222 flows in the transistor 22, as described above. Also, since the 10th terminal is on, the collector of the transistor 24 has an I
_C241 flows. This value indicates that resistors 54 and 56 are resistors 48 and 50.
And the diode 52 has the same characteristics as the diode 46, so the value is equal to I _C221 . Therefore, in the DC motor 16, I _C20 + I _C222 + I _C241 , that is, I _C20 + 3I
_C221 flows and the vibration becomes larger.

When V _S > V ₅ , the sixth, ninth, and eleventh terminals of IC40 are turned on. Since the sixth terminal and the ninth terminal are turned on, I _C20 flows in the transistor 20 and I _C222 flows in the transistor 22. Further, since the 11th terminal is on, I _C242 flows through the collector of the transistor 24, as when the 10th terminal is on. This I _C242 is equal in value to I _C222 because resistors 54 and 56 are equal in value to resistors 48 and 50 and diode 52 is of the same characteristics as diode 46. Therefore, in the DC motor 16, I _C20 + I _C222 + I _C242 , that is, I _C20 + 4I _C221 flows,
The vibration becomes even larger.

In the above embodiment, NPN transistors using PNP transistors can be used as the transistors 20, 22, 24, and FETs can be used instead of the transistors 20, 22, 24. Further, in the above embodiment, the voice signal V _S is
I _C20 is configured to always flow to the DC motor 16 when V _{1 is} higher than V _1.However, by removing the transistor 20, for example, I _{C 20} is always applied to the DC motor 16 even when the audio signal V _S is higher than V _1. You can prevent _C20 from flowing. Further, in the above-mentioned embodiment, the current supplied to the DC motor 16 is switched to five stages by the five-stage output change of the IC40, but by changing the IC40 to another one,
By changing the output in 5 steps or more and adding a transistor, the current supplied to the DC motor 16 can be increased in 5 steps or more. Further, in the above embodiment, the terminal of the IC 40 absorbs the constant current I ₁ , but instead of this, the constant current I ₁ may be supplied.

[Effect of device]

As described above, according to the present invention, the variable resistance means connected in parallel is connected in series with the vibrating means, and the resistance value of the variable resistance means is changed according to the level of the audio signal. Therefore, for example, even if the vibrating means is short-circuited, the short-circuit current shunts the variable resistance means connected in parallel, so that no large short-circuit current flows in each variable resistance means, and each variable resistance means does not flow. Will not be damaged. Further, even in the normal operation, the current supplied to the vibrating means shunts the variable resistance means, so that the heat generation can be dispersed. Furthermore, according to the present invention, in order to change the resistance value of the variable resistance means, the control signal is directly supplied from the control means to each variable resistance means without using a photo coupler or the like. The circuit configuration is simplified and its manufacture is easy. In addition, in the above embodiment, the IC 40 has a constant current.
Since I ₁ is absorbed, the base current of each transistor is constant, the current flowing from each transistor to the DC motor 16 is also constant, and a constant torque can be obtained.

[Brief description of drawings]

FIG. 1 is a circuit diagram of an embodiment of an acoustic vibration device according to the present invention, and FIG. 2 is a partially omitted vertical sectional view of a mechanical portion of the embodiment. 10 ... Cylindrical body, 14 ... Excitation means, 20, 22, 24 ... Transistor (variable resistance means), 32 ... Control means, 34, 36, 38
...... Control signal generation means, 40 …… IC (comparison means).

Claims (2)

[Scope of utility model registration request] 1. A tubular body, a vibrating means which is provided in the tubular body and whose vibration is changed according to the magnitude of an electric current supplied, and a vibrating means which are connected in series with each other. It has a control terminal and has a first resistance state when a first control signal is supplied to this control terminal and has a smaller resistance value than a first resistance state when a second control signal is supplied to the control terminal. A parallel circuit in which at least two first and second variable resistance means that are in the second resistance state are connected in parallel, and a control circuit of the first variable resistance means is connected to the control terminal of the first variable resistance means when the audio signal is smaller than the first threshold value. 1 control signal is supplied and the audio signal is the first
Greater than the second threshold and less than the second threshold
A second control signal is supplied to the control terminal of the variable resistance means, and when the audio signal is larger than the second threshold value and smaller than the third threshold value, the second control signal is supplied to the control terminal of the first variable resistance means. A signal is supplied and a first control signal is supplied to the control terminal of the second variable resistance means, and when the audio signal is larger than the third threshold value, the second control resistor is connected to the control terminals of the first and second variable resistance means. And a control means configured to supply the control signal of 1. 2. The control means comprises a comparison means and a control signal generation means, the comparison means has at least four output terminals, first to fourth, and the audio signal has a first threshold value. When it is smaller than the first threshold value, the first output terminal is set to the first state, the second to fourth output terminals are set to the second state, and the audio signal is larger than the first threshold value and larger than the second threshold value. When it is small, the second output terminal is set to the first state, and the first and third
And the fourth output terminal is set to the second state, and the second and third output terminals are set to the first state when the audio signal is larger than the second threshold value and smaller than the third threshold value. Fourth
The second output terminal is set to the second state, and when the audio signal is larger than the third threshold value, the second and fourth output terminals are set to the first state and the first and third output terminals are set to the second state. The control signal generating means is connected between the first and second output terminals of the comparing means and the control terminal of the first variable resistance means, and A second energizing element connected between the third and fourth output terminals of the means and the control terminal of the second variable resistance means, the first energizing element being at least in the first state when the first output terminal is in the first state. A first control signal is supplied to the control terminal of the first variable resistance means, and a second control signal is supplied to the control terminal of the first variable resistance means when the second output terminal is in the first state. When the control terminal of No. 3 is in the first state, the first control signal is supplied to the control terminal of the second variable resistance means, Control terminal configured comprising Claim 1 acoustic vibration device according to supply a second control signal to the control terminal of the second variable resistance means the first state.