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DESCRIPTION JPH06205499

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DESCRIPTION JPH06205499
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
hearing aid-compatible piezoelectric receiver with a coil for generating a magnetic field.
[0002]
2. Description of the Related Art A hearing aid-compatible piezoelectric receiver with a coil for
generating a magnetic field comprises an input terminal to which an electric signal is input, a
signal supply terminal for supplying an electric signal from the input terminal to a piezoelectric
vibrating element in a case, and a magnetic field. And a coil terminal connected to the generating
coil.
[0003]
Conventionally, the above-described three types of terminals, the input terminal, the contactor
and the coil terminal, are generally individually assembled in a case (Japanese Patent Application
Laid-Open No. 61-88699, particularly See Sho 63-102497).
[0004]
Therefore, the number of parts is large, and not only the number of assembling operations
including the soldering operation is increased but also the parts management is also difficult.
[0005]
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1
An object of the present invention is to provide a hearing aid-compatible coiled piezoelectric
receiver with magnetic field generation, in which the three types of terminals required for the
piezoelectric receiver are integrated into one unit to simplify the assembly.
[0006]
In order to achieve the above object, a piezoelectric receiver according to the present invention is
a hearing aid-compatible coiled piezoelectric receiver for magnetic field generation having a pair
of terminal units in the case, The terminal unit is a branch of the signal supply terminal, the
external terminal, and the coil terminal from the mounting portion. The mounting portion is a
portion attached to the case, has a plate shape, and the signal supply terminal is on the case. It is
in contact with the electrode of the built-in piezoelectric vibration element, is in the form of a
strip with elasticity held up obliquely upward from the mounting part, and the input terminal and
the coil terminal are in the direction opposite to the signal supply terminal. The input terminals
are terminals for connection of an external circuit, the coil terminals are terminals for connection
of a hearing aid-compatible magnetic field generating coil, and the mounting portions are of the
case. Mounted on the inside Input terminals and the coil terminals are those drawn to the outside
through the hole of the case.
[0007]
[Operation] Since the signal supply terminal, input terminal, and coil terminal are integrated as
one terminal unit, assembly to the case is easy, and the number of soldering points is
significantly reduced compared to individual ones. .
[0008]
An embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is a longitudinal sectional view showing a hearing aid-compatible piezoelectric receiver
according to an embodiment of the present invention, FIG. 2 is a bottom view of the same, and
FIG. 3 is an expanded view of a terminal unit used in the embodiment of the present invention 4
(a) is a plan view showing the terminal unit, FIG. 4 (b) is a front view, FIG. 4 (c) is a left side view,
and FIG. 4 (d) is a right side view.
[0009]
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2
In FIG. 1 and FIG. 2, the inner case 1 and the outer case 2 are combined inside and outside,
supported between the inner and outer cases 1 and 2, the piezoelectric vibrating element 3 is
built in the case, and the diaphragm of the piezoelectric vibrating element 3 A sound output hole
4 is opened in the surface of the outer case 2 facing the face.
A hearing aid-compatible magnetic field generating coil 5 is wound in the groove 6 on the
circumferential surface of the outer case 2.
[0010]
Here, in FIG. 1 and FIG. 2, the electric signal inputted to the input terminal 7 is fed to the
piezoelectric vibrating element 3 through the signal supply terminal 8 and at the same time fed
to the magnetic field generating coil 5 through the coil terminal 9. .
[0011]
According to the present invention, the input terminal 7, the signal supply terminal 8 and the coil
terminal 9 are united with a conductive material, and the unitized pair of terminal units 10, 10 is
provided in the case.
[0012]
Each terminal unit 10 is obtained by branching the input terminal 7, the signal supply terminal 8,
and the coil terminal 9 from the mounting portion 11.
[0013]
The attachment portion 11 is a portion attached to the inner surface of the inner case 1 as shown
in FIG. 1, and has a plate shape as shown in FIGS.
[0014]
The signal supply terminal 8 has a bent edge 8a at its tip to be in contact with the electrode of
the piezoelectric vibration element 3 built in the cases 1 and 2 as shown in FIG. 1, and as shown
in FIG. 3 and FIG. It has a strip-like shape which is made to stand obliquely upward from 11 and
retain elasticity.
[0015]
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3
The input terminal 7 and the coil terminal 9 are respectively bent in the opposite direction to the
signal supply terminal 8 as shown in FIG. 3 and FIG.
[0016]
The input terminal 7 is a terminal for connection of an external circuit, and in order to give
strength as shown in FIGS. 3 and 4, folded pieces 7a, 7a are attached to both sides, and these are
folded to obtain double thickness. It is formed.
Further, the plate surface of the input terminal 7 is formed with a retaining member 7b which is
partially cut and raised.
[0017]
The coil terminal 9 is a terminal for winding and soldering the end of the hearing aid-compatible
magnetic field generating coil 5 as shown in FIG. 1, and is provided with a notch 9a for locking
the coil end.
[0018]
The input terminal 7 and the coil terminal 9 are bent at a right angle to the direction opposite to
the rising direction of the signal supply terminal 8 as shown in FIG. It is pulled out to the outside
through 1a.
[0019]
On the other hand, the pair of signal supply terminals 8 obliquely extend in the case, and the
bent portion 8a elastically contacts the electrodes of the piezoelectric body of the piezoelectric
vibration element 3 and the diaphragm by elastic force, And the piezoelectric vibrating element 3
are electrically conducted.
[0020]
Since the signal supply terminal 8 is a strip-shaped terminal, it can be elastically deformed easily
by receiving a force from the piezoelectric vibrating element 3, and an electrical connection with
the electrode of the piezoelectric vibrating element 3 can be reliably obtained. Be
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4
[0021]
Further, the end of the magnetic field generating coil 5 wound around the outer periphery of the
case 2 is wound several times on the pair of coil terminals 9 protruding outside the case, and the
end of the coil 5 is soldered to the coil terminal 10 Be done.
The coil 5 is reliably wound around the coil terminal 9 using the notch 9a.
[0022]
In addition, a telephone line for communication is connected to the input terminal 7 projecting
out of the case.
The input terminal 7 is thickened by overlapping the folded back pieces 7a, so that it can
withstand a bending force from the telephone line even when the telephone line having a certain
degree of rigidity is connected. It has become.
Further, the electric signal supplied to the input terminal 7 is supplied to the piezoelectric
vibrating element 3 from the mounting portion 11 through the signal supply terminal 8 and is
supplied to the coil 5 through the coil terminal 9.
[0023]
When the projecting lengths of the input terminal 7 and the coil terminal 9 are made different,
when the connection operation is performed, the respective terminals 7 and 9 do not disturb the
connection operation, and the operation can be smoothly performed.
[0024]
Further, as described above, since the terminal unit 10 is attached by holding the retainer 7b of
the external terminal 7 in the hole of the case 1 and holding the case 1 between the attaching
portion 12 and the retainer 7b, The terminal unit 10 can be attached to the case 1 with one
touch.
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5
[0025]
As described above, according to the present invention, since the terminal unit obtained by
integrally molding the three types of terminals necessary for the piezoelectric receiver is used, it
can be attached to the case with one touch, and between the terminals and the terminals It is not
necessary to individually solder-connect the contacts, and only a slight solder-connection can be
made between the magnetic field generating coil and the coil terminal.
[0026]
According to the present invention, it is possible to reduce the number of parts and simplify
assembly and part management.
[0027]
Brief description of the drawings
[0028]
1 is a longitudinal sectional view showing a hearing aid-compatible piezoelectric handset
according to an embodiment of the present invention.
[0029]
2 is a bottom view of the same.
[0030]
3 is a developed view of the terminal unit used in an embodiment of the present invention.
[0031]
4A is a plan view showing the terminal unit, FIG. 4B is a front view, FIG. 4C is a left side view, and
FIG. 4D is a right side view.
[0032]
Explanation of sign
[0033]
DESCRIPTION OF SYMBOLS 1 inner case 2 outer case 3 piezoelectric vibration element 4 sound
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output hole 5 coil for magnetic field generation 6 groove 7 input terminal 8 signal supply
terminal 9 coil terminal 10 terminal unit 11 mounting portion
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