JPS58178700A - Transmitter - Google Patents

Abstract

PURPOSE:To obtain a large output and also to improve an S/N ratio, by sticking the apex part of a diaphragm to a nearly U-shaped spring whose one end is fixed, and also sticking a piezoelectric material having an electrode to nearly center part of the spring. CONSTITUTION:A conical diaphragm 2 is provided inside a case 1. The apex 2a of the diaphragm 2 is fixed by adhesion, to one side piece 3a of a U-shaped spring consisting of phosphor bronze, etc., through a damper 4. The end part of the other side piece 3b of this spring 3 is fixed by a supporting member 5. A piezoelectric material 6 is made to adhere to a circular arc-like part 3c in the center of the spring 3. This piezoelectric material 6 is formed like a thin plate, and electrodes 7, 8 are provided on both its surfaces. When the conical diaphragm 2 is vibrated by receiving acoustic pressure, the total displacement of this diaphragm 2 concentrates on its apex 2a. The spring 3 receives said displacement to vibrate its side piece 3a up and down as shown with an arrow (a). The piezoelectric material 6 is bent to generate voltage in accordance with this vibration.

Description

DETAILED DESCRIPTION OF THE INVENTION This book is specifically about pressure (to take out No. 16 through the material) and to transport the material.

In recent years, an FC-containing AJ5 device has been proposed using a diaphragm formed by forming a polymeric piezoelectric material such as PvL)F into a film and providing ``#IL'' on both sides of the film, and the development of its practical application has been hampered. I'm having a good time. There have been many types of transmitters released since the beginning of the year, but all of them are designed to use the pressure sensor in the offshore mode, so the m1lJ of the diaphragm is small. Therefore, the output rarely becomes small δ.

Since the present invention has been made in view of the above problems, examples of additional features of the present invention will be described below with reference to the drawings.

The first example shows how the present invention was applied to a telephone transmitter.

In the figure, inside the case (1) there is a circular diaphragm (21) or its periphery fixed to the four types of case (1).
It is set in. This vibration & tll is made of metal, which is used in low-priced carbon microphone temples.

Plastic, etc. may be used for the glue. @dr board L2
The additional point of + (2a) is a U-shaped splash made of Rinyoitai etc.
Each piece (6a) of 31 is rotated through the damper (4). A piezoelectric material (6) is fitted into the medium-heated circle-edge part (6C) of the spring (3).As this piezoelectric material n t61, i)' ITI L) F < (6) This pressure is formed into a thin plate shape as shown in the second figure, and one of its ridges ( 4 years ago t'71 i
8+ is provided. '1 Unfortunately (force ζδ), the lead tel tll can be derived, and this lead - (9) dummy passes through the 11 points of the case il + and connects the two terminals U.
It is dependent on υα4. This termituru ul Q'4
The input terminal .alpha. of a duplicator circuit U field provided externally with the beam d is connected to a power source. Receiving circuit α
Kohani E T (Electric Field Young Rice Tofunster) Use UL to create a vehicle like a demon L, and output 1 to its output terminal U field meat.
S issue kJ07! - The case (lj (1)) facing the diaphragm 21 is provided with a multi-ridged 1vA hole υ to take in the child's voice.

1. Suppose that IiR is applied with a sound pressure of 1 yen cylindrical shaking sea bream +21, and one displacement of this vertical motion t2+ will reach its peak (2a). The spring (3) crosses the upper β angle, and one piece (6a) of the spring vibrates up and down as shown by arrow a. The piezoelectric material (6) is bent in response to this fluorescence and generates a voltage. This voltage is i” E 'I' Q
You can get an output of 18 by being exposed to Enoki 11J 0 In this case, the pressure area material ttjJ is in the mode, so Arashi II Sumire is big, so you can use it to get a big output. can. In addition, in the case of this ## melon, piezoelectric material (6
), cross the 1st part of the 1st part of the 1st part of the 1! Since the slippage is good, material / 1111■ can be easily processed, and one machine can do it at a quantity rate of t.

Although the diaphragm (2) was formed in the inner circle shape in the above example, the diaphragm (2) may also be formed in a shape (inverted dome shape) that forms part of a bulb, for example. It is good to have a shape in which the displacement of the apex is from the center to the center when the voltage is applied to the top. The damper (4) may be omitted, but when deriving the Iw1 circular theory, the [[
Since it may bounce with iJ, this damper 15
1 is used. The S/N ratio can be further improved by placing the receiver 4g and the output inside the case (1) and deriving the output 4g from the case tl).

In addition to the above-mentioned invention, the present invention has six transmitter cap vibrations.
The apex part (2a) of 2 is fixed at one end, which is a shorthand piece (3), and the upper aα fixed fi (3b) and both pieces (6a) on the opposite side are shown. Approximately in the center of the ship's spring (pressure material having 7J (81
Since the output is extracted from the piezoelectric material L61 and filtered, it is possible to obtain a transmitter that has a large output, a high S/N ratio, and is easy to break.

[Brief explanation of drawings]

FIG. 1 is a (3) diagram showing an example of the detection of the present invention, and FIG. 2 is an enlarged view of the part shown in FIG. 1. In addition, in the codes used for introverts, (2J...
・・・・・・・・・Ki m 恢(2a)・・・・・・・・・
Vertex (3)・・・・・・・・・e=[Ne(6)...
・・・・・・Piezoelectric material +7X81・・・・・・
...It's a billion dollars. Representative person hired
Yoshio l Sugimoto Responsibility Diagram 1 1

Claims (1)

[Claims] The apex part of the diaphragm is fixed at one end of the spring forming a U-shape, and the upper part of the spring is fixed at the other end, and the upper part is fixed at the other end.
A piezoelectric material having an 11L capacity is fixed to the approximate arrow part of the l spring, and the output is made to flow from this lf electric material.