JPS62211697

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DESCRIPTION JPS62211697
[0001]
The present invention relates to an electronic musical instrument senna for electrically extracting
vibrations of metal strings used in electronic musical instruments such as electronic guitars,
electronic basses, electronic pianos and the like, and particularly to piezoelectric elements such
as piezo crystals. The present invention relates to a method of manufacturing a saddle member in
a used sensor for a piezoelectric electronic musical instrument. (Prior art) As such a sensor for a
piezoelectric type electronic musical instrument, there is one as shown in FIG. 8, and FIG. 9 is a
sectional view taken along the line B--B of FIG. The sensor S shown in FIGS. 8 and 9 has a body
member 2 formed of brass, iron or the like provided with a V groove 1 of approximately 90 ′ ′
opening angle, and the inclined surfaces LA, IB of the V groove portion. A first piezoelectric
element 3 such as a pair of piezoelectric crystals or the like, which is coated and fixed with a
conductive adhesive made of epoxy resin, for example, in a predetermined position, and the
above-mentioned conductive property on the upper surface of the piezoelectric element 3 A
conductive plate 4 having a V-shaped cross section, for example, made of a copper plate, coated
and fixed with an adhesive, and a V-shaped cross section, and the above-mentioned conductive
adhesive is applied to the outer inclined surfaces 5A and 5B. And a pair of identical saddle
members 5 (for example, made of iron or the like on which the second piezoelectric element 6.6
such as piezo crystal is fixed), and further, the lead wire 7 is V-shaped of the conductive plate 4 It
is soldered to the tip of the groove. As shown in FIG. 10, the sensors S configured in this way are
provided on a plurality of mounting seats 9 provided corresponding to the respective strings 10
formed on the base 8 fixed to the electronic musical instrument main body, as shown in FIG. Each
mounting seat 9 is provided with mounting screws (not shown) which are inserted from tap holes
IC formed in the body member 2 respectively. Then, the strings 10 of the musical instrument are
stretched in a cane manner in contact with the respective inner inclined surfaces 5a and 5b of
the grooves of the saddle member 5, and the vibration frequency of the strings 10 is converted
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into an electric signal by the piezoelectric elements 3 and 6; It is configured to be taken out
through the lead wire 7. (Problems to be solved by the invention) The saddle member 2
constituting one member constituting the conventional L sensor S is individually manufactured
for each sensor, so the workability is low and the cost amplifier It was also the cause of the
variation in product accuracy. (Means for Solving the Problems) In view of such problems, the
present invention provides a body member having a V-groove of approximately 90 ° and a pair
of first piezoelectric elements fixed on each inclined surface of the V-groove. And a conductive
plate material having a V-shaped cross section fixed in the V-shaped groove via the first
piezoelectric element, and a pair fixed to the other surface of the conductive plate material in
opposition to the first piezoelectric element. And a saddle member fixed in the V groove via the
second piezoelectric element and having a substantially V-shaped cross section, and a chord
disposed in the V-shaped opening groove of the saddle member A method of manufacturing a
saddle member in a sensor for a piezoelectric type electronic musical instrument electrically
taking out the vibration of the conductive plate material through a lead wire, wherein the rod
material having the V-shaped groove is formed. The point is to manufacture the saddle member
by cutting the material at predetermined intervals.
(Operation) The saddle member can be made more than one material at a time. EXAMPLES
Examples of the present invention will be described in detail below. FIG. 1 is an external
perspective view of a sensor for a piezoelectric type electronic musical instrument using a saddle
member manufactured using the manufacturing method according to the present invention, and
FIG. 2 is a cross-sectional view taken along line AA of FIG. In FIG. 1 and FIG. 2, the sensor S is a
body member 12 formed of brass, iron or the like provided with a V groove 11 having an open
angle of about 90 °, and inclinations of the V groove 11 of the body member 12 The first
piezoelectric elements 13.13 such as a pair of piezo crystals fixed at predetermined positions on
the surfaces 11A and 11B with a conductive adhesive made of epoxy resin, for example, and the
V groove 11 of the body member 12 A V-shaped conductive plate 14 made of, for example, a
copper plate, coated with the conductive adhesive on the surface facing the piezoelectric element
13.13 and superimposed and fixed on the first piezoelectric element 13.13; And a second
piezoelectric element te, is such as a pair of piezoelectric crystals or the like in which the
conductive adhesive is applied and fixed on the other surface of the conductive plate 14 and at a
position opposed to the first piezoelectric element 13.13. , V-shaped in cross section, and its
outer inclined surface 5A, by applying the conductive adhesive and a saddle member 15 which is
formed by a pair of similarly fixed to the second piezoelectric elements 18.18 such as a
piezoelectric crystal, for example, iron or the like to 15B. The inclined surfaces 11A and 11B of
the body member 12 to which the first piezoelectric element 13.13 is fixed, and the outer
inclined surfaces 15A of the saddle member 15 bonded to the second piezoelectric elements io
and to. , 15B, at positions where the first piezoelectric element 13.13 and the second
piezoelectric elements to, te are to be disposed, respectively. It becomes a positioning means
which receives part of ia, to and ie and prevents the piezoelectric element 13, 13.18.16 from
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sliding in the direction of inclination on each of the inclined surfaces 11A, IIB, 15A, 15B. A recess
21.22 is provided. In the sensor S configured in this way, first, the groove 21 and the bonding
surface of the first piezoelectric element 13.13 received in the groove 21 are respectively
attached with the conductive adhesive. The conductive adhesive is applied to the bonding
surfaces of the body member 12 with the first piezoelectric elements 13 and 13 formed by
application and fixing, the recess 22 and the second piezoelectric element 16.16 received in the
recess 22. A second piezoelectric element ie formed by applying and fixing the agent, and a
saddle member 16 with te are individually formed and placed. Next, a V-shaped conductive plate
14 to which the lead wire 7 is soldered is prepared, and the conductive adhesive is applied to the
bonding surface of the conductive plate 14 and the first piezoelectric element 13.13, The
conductive plate material 14 is placed on the first piezoelectric element 13.13, and the
conductive adhesive is applied to the bonding surface of the second piezoelectric element 18.18
and the conductive plate material 14, respectively. Is formed by placing the second piezoelectric
element 16 and the saddle member 15 with 1θ on the conductive plate 14.
Further, when forming the body member 12 constituting one member of the sensor S, as shown
in FIG. 3, first, the V groove portion 1 in which the inclined surfaces 11A and 11B and the
concave groove portion 21 are formed, and lead wire extraction A rod-like material 112 having a
portion to be the recess 23 is drawn out. Then, after cutting for each body member shown by a
dot-and-dash line in the figure, a tap hole 11C is further formed. Each body member 12 produced
by cutting in this manner is subjected to surface processing as required. Further, when forming
the saddle member 15 constituting one member of the sensor S, first, as shown in FIG. 4, the
inner inclined surfaces 15a, 15b + and the outer inclined surfaces 15A, 15BT! The material 115
having a portion to be the recess 22 is drawn out. Subsequently, it cuts at equal intervals for each
saddle member 15 shown with a dashed dotted line in the figure. In the same manner as the
body member 12, the saddle member 15 is also subjected to surface processing as required after
cutting. In the sensor made as described above, the lead wire 7 is fixed to the bottom of the Vshaped end of the conductive plate 14 by soldering, and is arranged in the electronic musical
instrument body as shown in FIG. Mounting seats corresponding to the respective strings 10 via
mounting screws (not shown) respectively inserted from the tap holes 11C formed in the body
member 12 to the plurality of mounting seats 9 provided on the base 8 to be provided The
sensor S provided on the mounting seat 9 in this manner is stretched in a state in which the
strings 10 of the electronic musical instrument are in contact with the inclined surfaces 15 a and
15 b of the groove 15 C of the saddle member 15. The vibration frequency of the string 10 is
converted into an electrical signal and can be taken out through the lead wire 7. In the above
embodiment, although an example of drawing processing is shown as processing means before
forming the body member 12, other than this, sizing processing, sintering processing, forging
processing, lost wax processing or the like is used. It is good. Also in the case of means for
manufacturing the saddle member 15, an example of drawing processing has been shown as in
the case of the body member 12. However, sizing processing, sintering processing, forging
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processing, lost wax processing, etc. may be used other than this. It is good. Furthermore, in the
above embodiment, the first and second piezoelectric elements 13.13.18.18 are formed by the
respective inclined surfaces 11A and IIB of the body member 12 and the respective inclined
surfaces 15A and 15B of the saddle member 15 in the direction of the inclination. As positioning
means for preventing sliding movement, concave portions 21 and 22 into which part of each
piezoelectric element 13, 13.1.6.16 is received and received are each inclined surface 11A, 11B
of the body member 12 and the saddle member 15 15A and 15B, respectively. For example, as
shown in FIG. 5, a positioning recess 114C may be provided on part of each of the inclined
surfaces 114A and 114B of the conductive plate 114.
In the assembly in this embodiment, first, the conductive adhesive is applied in the recess 114C,
and then the first piezoelectric element 13.13 and the second piezoelectric elements 16 and 16
are adhered and fixed. Then, the same conductive adhesive is applied and fixed in the n-groove
11 of the body member 12 and then the saddle member 15 is similarly applied to the conductive
adhesive. Is applied and mounted and fixed. Further, in connection with the lead wire 7, not only
soldering on the tip of the 7-shaped groove of the conductive plate 14 but also, for example, as
shown in FIG. 6 and FIG. A protruding terminal 114D is provided in advance at the tip of the
seven-shaped groove, and the end of the lead wire 7 is tangled with the terminal 114D, and then
soldering makes it possible to mount easily and reliably. (Effects of the Invention) Therefore,
according to the present invention, after forming a rod-like material having a V-shaped groove,
the material is then cut at predetermined intervals to manufacture the saddle member. Not only
the cost can be reduced, but also the variation of the product accuracy is small and the product
performance is stabilized.
[0002]
Brief description of the drawings
[0003]
FIG. 1 is an external perspective view of a piezoelectric electronic musical instrument sensor
manufactured using the manufacturing method according to the present invention, FIG. 2 is a
cross-sectional view taken along the line A-A of FIG. 1, and FIG. 2 is a perspective view showing
the rod-like member before forming the body member shown in FIG. 2, and FIG. 4 shows a rodlike material for explaining the manufacturing method of the present invention for forming the
saddle member shown in FIG. 1 and FIG. FIG. 5 is a perspective view, FIG. 5 is a cross-sectional
view showing a modification of the present invention, FIG. 6 and FIG. 7 are modifications of the
conductive plate shown in FIG. 1 and FIG. A plan view, FIG. 7 is a front view thereof, FIG. 8 is an
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external perspective view of a conventional piezoelectric electronic musical instrument, FIG. 9 is
a sectional view taken along the line B-B in FIG. It is a schematic perspective view for
demonstrating the state which attaches a sensor to the base ¦ substrate which is carried out.
S @ · · · Sensor, 7 · · · lead wire, 10 · · ·, 11 · · · V groove, 11A, 11B, 15A, 15B, 15a. 15b, 114A,
114B- ·· inclined surface 12 ... the body member, 13 ... first piezoelectric element, 14.114 old **
conductive plate, 15 ... saddle member, 16 ... first 2 piezoelectric elements, 21.22, 114C--Recess
for forming positioning means, 114D ... terminal, 112-1 rod material for body member, 115 rod
material for saddle member Patent applicant Nanacom, Inc. Patent applicant Chi, Inc. E, Si-11 'l +
D drawing of a pure book (no change to the contents of the drawing pure drawing (without the
change to the contents) procedure xi city jE-imperial r (method) August 18, 1986 Patent
application No. 55500 No. 2, Title of the Invention Method of manufacturing a saddle member of
a piezoelectric type electric musical instrument for sessers, correction person 6, correction object
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