JP2526666Y2 - Voltage detector for high-pressure therapy equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a voltage detector for a high-pressure treatment device.

[0002]

2. Description of the Related Art For the treatment of patients with stiff shoulders and other blood circulation disorders, a high-pressure treatment device, that is, a device for treating a patient on an insulating mat laid on the floor by applying an electric field of high voltage to the patient is used. In this case, in order to easily and reliably detect whether or not a high-voltage electric field is acting on the patient, when a doctor or the like approaches the patient by hand , it emits light and emits an annunciation sound at the same time. A voltage detector having such a configuration is used. As shown in the cross-sectional view of FIG. 3A, for example, this voltage detector has a cylindrical insulating case (1) and a neon tube (3) housed in one end opening and serving also as a detection electrode (2). A resistor (4) which is a current limiting impedance housed inside the insulating case (1), a capacitor (5), and a sound emitting hole (1a) formed in a peripheral surface of the insulating case (1). Loudspeaker (earphone) (6) and insulating case (1)
And a gripping electrode (7) provided on the peripheral surface at the other end of the above, and the above components are connected in series as shown in the circuit diagram of FIG. 3 (b). When the grasping electrode (7) is used to grasp the electric detector, the installation end of the neon tube (3) serving also as the detection electrode (2) is held by a doctor or the like who grasps the electric detector when the patient approaches a patient in a high electric field. Its high electric field via capacitance etc.
The voltage applied to the detection electrode (2) of the detector.
The impedance and resistance of the neon tube (3) of the detector circuit.
Impedance for current limitation by anti-resistance (4) and capacitor (5)
Dance, series rotation of impedance by speaker (6)
Current flows in the path, and the voltage drop due to the current
Of the voltages divided based on impedance, neo
The voltage corresponding to the impedance of the
At the same time that the on-tube (3) is lit to a visible brightness , the speaker (6) sounds at an appropriate volume to notify that a predetermined voltage is being applied. Since this electric detector is provided with a speaker for sound notification in addition to the neon tube which is a visual detection means, it has an excellent advantage that it is extremely easy to check whether or not voltage is applied.

[0003]

In the conventional voltage detector, a speaker made of Rochelle salt is used as the speaker (6). However, since this Rochelle salt has deliquescence, it is difficult to use other parts such as a neon tube (3). The life is significantly shorter than that of the parts, and the life as an electric detector is also short. For this reason, there is a problem in that relying on sound emission may cause misperception.
Was.

[0004]

[Purpose of the Invention] The purpose of the present invention is to provide a long-life high-pressure treatment device.
A voltage detector of use there is in providing Hisage.

[0005]

[Means of the present invention to solve the problems] where recent lock
Instead of shell salt, a long-lasting ceramic was used
As piezoelectric speakers become commercially available, we will try to use them
Attempts have been made by many manufacturers. Only
When using this ceramic piezoelectric speaker,
No sound is produced or the sound is extremely low and practical.
It was revealed that no. According to an experimental study by the present inventors, it was found that the reason why the ceramic piezoelectric speaker does not sound is as follows. That is, the voltage detector circuit is a high impedance circuit, whereas the ceramic piezoelectric speaker has a significantly larger capacitance and a significantly lower impedance than those made by Rochelle salt. For this reason, when the piezoelectric speaker is connected in series to the voltage detector circuit, the terminal voltage of the piezoelectric speaker due to the circuit current becomes extremely low, and no sound is generated.
The voltage detector for a high-pressure treatment device according to the present invention has been conceived from the results of the above examinations, and the object of the present invention is achieved by the following means. That is, [a detection electrode provided on one end of the insulating case, a grip electrode provided on the other end of the insulating case, before
Connected between the sensing electrode and the gripping electrode and
Neon tube placed in the edge case, current limiting impedance
With the primary winding of the transformer for dance and impedance conversion
A series circuit comprising:
Connected to the secondary winding of the
It is composed of a vignetting ceramic piezoelectric speakers, detecting
The sensing electrode is arranged in a predetermined high electric field in order to
The capacitance of the doctor holding the gripping electrode
And applied to the sensing electrode by the high electric field
Current flows through the series circuit due to the applied voltage,
Tube impedance, current limiting impedance and
Impedance of primary winding of transformer for impedance conversion
Voltage divided according to the impedance of each
Primary and secondary windings of the transformer for impedance conversion
And the voltage determined by the turns ratio of

[0006]

With the above arrangement, the impedance of the ceramic piezoelectric speaker can be increased in proportion to the turns ratio of the impedance conversion transformer, and the impedance required for sounding the speaker can be obtained. Therefore, it is possible to realize a voltage detector that has a long service life and a large notification sound that ensures voltage detection using a ceramic piezoelectric speaker.

[0007]

1 (a) and 1 (b) are a sectional view and a circuit diagram of an embodiment of the present invention, wherein the same reference numerals as in FIG. 4 denote the same parts. In FIG. 1A, (1) is a cylindrical insulating case,
(1a) is a sound emission hole provided on the peripheral surface, and (3) is a neon tube, which also serves as a detection electrode (2). (4) and (5) are current limiting resistors and capacitors, and (7) is a gripping electrode, and their configurations are the same as in FIG. (8) is a ceramic piezoelectric speaker whose sound emitting surface is a sound emitting hole (1).
It is housed in the insulating case (1) so as to be located at a). (9) the impedance transformer unit, N1 is the primary winding thereof, N2 is a secondary winding, the primary winding N1 as shown in FIG. 1 (b) connected to the voltage detector circuit in series A ceramic piezoelectric speaker (8) is connected to the secondary winding N2. The primary and secondary winding ratios are set so that the primary-side converted value of the impedance of the ceramic piezoelectric speaker (8) connected to the secondary winding N1 is an impedance value at which a sufficient notification sound can be generated. Selected. It goes without saying that a detection electrode may be provided separately from the neon tube (3). The arrangement of each component in the insulating case (1) can be set arbitrarily.

[0008]

Another embodiment of the present invention has been described above. However, by providing a horn in the ceramic piezoelectric speaker (8), the loudness of the sound can be amplified, so that the power detection can be further ensured. . FIG. 2A is a sectional view of the embodiment, in which an opening (1b) is provided at the installation end of the gripping electrode (7) of the insulating case (1), and the opening (1b) is provided. A horn (10) is provided between the sound emitting surface of the piezoelectric speaker (8) and the ceramic piezoelectric speaker (8). According to the experiment, it was possible to obtain a notification sound two to three times as large as the case where the horn was not used, by selecting the length of the horn and the like. As shown in FIG. 2 (b), an opening (1b) for sound emission is provided on the peripheral surface of the insulating case (1), and a horn (10) bent between the opening and the speaker (8). You can also connect. This horn can also be applied to a conventional voltage detector.

[0009]

[Devised effect] As is apparent from the above high that by the present invention
The pressure detector for pressure therapy equipment has a long service life and
Excellent effects, such as being able to reliably report the result of power detection with intellectual sound
Is played.

[Brief description of the drawings]

FIG. 1 is an explanatory view of an embodiment of the present invention.

FIG. 2 is an explanatory view of another embodiment of the present invention.

FIG. 3 is an explanatory diagram of an example of a conventional voltage detector.

[Explanation of symbols]

 (1) Insulation case (1a) Sound emission hole (1b) Opening (2) Detection electrode (3) Neon tube (4) Resistance (5) Capacitor (6) Speaker (7) Holding electrode (8) Ceramic piezoelectric speaker ( 9) Transformer for impedance conversion N1 primary winding N2 secondary winding (10) Horn

Claims (3)

(57) [Scope of request for utility model registration] And 1. A detection electrode provided on one end of the insulating case, a grip electrode provided on the other end of the insulating case, is connected between the sensing electrode and the gripping electrode wherein
Neon tube and current limiting impedance
-Primary winding of transformer for impedance and impedance conversion
Series circuit and, is connected to the secondary winding of the impedance transformer unit comprising a
And the ceramic pressure provided in the insulating case
An electric speaker, and the detection electrode is arranged in a predetermined high electric field for detection.
When touched, the electrostatic force of a doctor or the like holding the grip electrode
Through the capacitor and the like, the high electric field
The applied voltage causes a current to flow through the series circuit,
Neon tube impedance, current limiting impedance
Of the primary winding of the transformer for impedance conversion
Of the neon tube according to each impedance of the dance
Neon tube clarified by voltage divided into impedance
The lamp is lit so that it can be seen
Divided into the impedance of the primary winding of the transformer for impedance conversion
Voltage and primary winding of the impedance transformer
The voltage is determined by the winding ratio between the wire and the secondary winding.
Notification of the degree of clear listening from the ramic piezoelectric speaker
An electrometer for a high-pressure treatment device that emits sound. 2. The neon tube is connected to one end of the insulating case.
Configured to be used as a provided sensing electrode
The voltage detector for a high-pressure treatment device according to claim 1. 3. The sound emitting opening in the insulating case,
A sound emitting opening and a sound emitting surface of the ceramic piezoelectric speaker;
And a trumpet-shaped horn connecting between the horns.
3. The voltage detector for a high-pressure treatment device according to 2.