JPH09219900A - Speaker and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a speaker in which an undesired sound produced by the lead wire of a voice coil and the rolling phenomenon of a diaphragm due to the unbalance of a support system are canceled and a solder working process can be eliminated. SOLUTION: The lead wire is printed on the base material 1 of a woven fabric or non-woven fabric by using conductive past. Then, high-rigidity highmolecular resin 4 is applied on a part to be a vibrating part, and flexible highmolecular resin 5 is applied on a part to be an edge. Then, the diaphragm 6 of prescribed solid shape is integrally molded by hot pressing. A voice coil bobbin 10 with a terminal is stuck fast to this diaphragm 6, and the voice coil and the conductor part of the diaphragm are coupled. On the other hand, a lead part is formed at outer peripheral part of the frame as well by using the conductive past. Then, the diaphragm 6 is aligned and connected to the frame, and the voice coil 9 and an external terminal are connected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker in which a lead wire for connecting a voice coil and a frame is devised, and a manufacturing method thereof.

[0002]

2. Description of the Related Art In a general speaker, a lead wire is used to connect a voice coil bobbin to an external terminal attached to a frame. However, if there is a possibility of lead wire disconnection due to large amplitude, such as a woofer or a full-range speaker, connect a gold thread wire between the end of the voice coil lead and the external terminal of the frame to increase the strength. Prevents wire breakage.

[0003]

However, due to the local joining of the voice coil and the lead wire, the weight becomes uneven in the circumferential direction of the voice coil bobbin, the force of the gold wire acts as a spring, The resonance motion or the like at a specific frequency affects the balance of the pistonic motion originally only in the vertical direction. For this reason, if the speaker is driven with a certain electric power or more, a rolling phenomenon may occur at a specific frequency, which may cause distortion in acoustic characteristics or destroy the speaker itself.

In the case of a small speaker having a diameter of, for example, about 20 to 40 mm, in view of its thin structure and mass productivity, the lead wire is often fixed to the diaphragm by an adhesive or grease without using the gold thread wire. . However, this method causes disconnection at the time of large input or low-frequency reproduction, so that it is not easy to make a small speaker wide band and to withstand input.

In a general speaker, a lead wire made of a metal wire is wired from the voice coil bobbin to the external terminal. However, the presence of the lead wire causes a problem of input limitation and distortion of acoustic characteristics. It was
Also, in terms of construction methods, advanced technology such as soldering work and wiring work was required, making it difficult to handle automation.

The present invention has been made in view of the above-mentioned conventional problems, and eliminates the lead wire made of a metal wire and the electric coupling made by the solder, and limits the input caused by the lead wire. And reduce distortion on the acoustic characteristics,
Another object of the present invention is to realize a speaker and a manufacturing method thereof that can reduce the soldering work steps in the construction method.

[0007]

According to the invention of claim 1 of the present application, a base material made of a fiber woven or non-woven fabric having a fiber diameter of 10 to 100 μm is applied or printed on the base material by using a conductive paste. A diaphragm including a pair of conductors and a resin layer applied to a base material so as to cover at least a part of the conductors, and an outer periphery of the diaphragm are elastically connected to electrically connect one end of each conductor. And a voice coil bobbin that is wound around the voice coil and is connected to one end of the voice coil and the other end of the conductor portion. The voice coil is driven through the conductor portion of the diaphragm. The feature is that an electric current is applied.

The invention according to claim 2 of the present application has a fiber diameter of 10
-100 μm ultrafine fiber woven fabric or non-woven fabric is coated or printed with a pair of conductors using a conductive paste, and a resin is applied to the substrate so as to cover at least a part of the conductors, and the resin is applied. The formed base material is thermoformed and pressed with a mold having a predetermined three-dimensional shape, and a diaphragm having a portion in which a resin and a base material fiber are combined as a vibrating portion and an edge is integrally formed,
A voice coil bobbin wound around a voice coil is attached to the inner circumference of the diaphragm, and the outer circumference of the diaphragm is joined to the speaker frame that has a conductor for external connection formed on the outer circumference. It is characterized in that the drive current is applied through the conductor portion of the plate.

According to a third aspect of the present invention, in the loudspeaker according to the first aspect, at least the connecting portion of the conductor portion of the outer peripheral portion of the diaphragm and the outer peripheral portion of the frame is joined using a conductive adhesive. It is characterized by being done.

According to a fourth aspect of the present invention, in the speaker according to the first aspect, the speaker frame uses a conductive paste between the connecting portion of the diaphragm having the conductor portion and the external terminal. It is characterized by being provided with wiring.

According to a fifth aspect of the present invention, in the speaker according to the first aspect, the conductive paste is a material in which silver, copper, aluminum or an alloy thereof is added as fine powder to a resin. To do.

According to a sixth aspect of the present invention, in the method of manufacturing a speaker according to the second aspect, the conductive paste is
It is characterized in that it is a material in which silver, copper, aluminum or an alloy thereof is added as fine powder to a resin.

The invention according to claim 7 of the present application provides a fiber diameter of 10
A fiber woven or non-woven fabric composed of
Screen printing a plurality of conductor parts at the same time using a conductive paste on the base material, apply resin to the base material at multiple points at regular intervals so as to cover at least a part of the conductor part, and the base material coated with resin Each part of the above is thermoformed and pressed with a mold having a predetermined three-dimensional shape, and a plurality of vibration plates having a vibrating part and an edge of the part where the resin and the fiber of the base material are combined are integrally molded together to form a voice coil. By attaching each wound voice coil bobbin to the inner circumference of each diaphragm and joining the outer circumference of each diaphragm to each speaker frame with a conductor for external connection formed on the outer circumference, a plurality of speakers are joined. Is manufactured.

The invention according to claim 8 of the present application provides a fiber diameter of 10
A roll-shaped fiber woven fabric or non-woven fabric having a thickness of ˜100 μm is used as a base material, the base material is drawn out in a band shape, and the conductive paste is allowed to flow out from a plurality of nozzles while maintaining a constant interval or continuously applied to the band-shaped base material or A plurality of conductors are formed by impregnation, and resin is applied to the base material at multiple points at regular intervals so as to cover at least a part of the conductors, and each part of the base material coated with the resin has a predetermined three-dimensional shape. Thermoforming and pressing with a die having a resin, a plurality of diaphragms having a vibrating part and an edge of a composite of resin and fiber of the base material are integrally molded at the same time, and each voice coil bobbin is formed by winding a voice coil. A plurality of speakers may be manufactured in a series of steps by attaching the outer peripheral portion of each diaphragm to each speaker frame that is attached to the inner peripheral portion of the diaphragm and has a conductor for external connection formed on the outer periphery. Made And wherein the door.

The invention according to claim 9 of the present application is based on claim 2,
9. In the method for manufacturing a speaker according to any one of 6, 7, and 8, as a step of applying a resin to a base material, a polymer resin having different vibration characteristics is applied to a vibrating portion and an edge portion of the base material. Alternatively, it is characterized by printing.

According to a tenth aspect of the present invention, in the method of manufacturing a speaker according to any one of the second, sixth, seventh and eighth aspects, a pair of conductive pastes is applied or printed on the base material to form a pair. By applying a conductive paste over the entire surface of the vibrating part at a distance for insulation of the conductor part of
While suppressing the split resonance by increasing the rigidity of the vibrating part,
It is characterized in that the electrical resistance is reduced by increasing the width of the conductor portion.

The invention according to claim 11 of the present application is the method of manufacturing a speaker according to any one of claims 2, 6, 7, and 8, wherein the step of applying or printing a conductive paste on a base material is a speaker. By forming the conductor part so that the target pattern is arranged with respect to the vertical axis of, the balance of the surface weight of the vibrating part is maintained, and the partial deviation of the rigidity is reduced, and the division resonance of the diaphragm is reduced. It is characterized by suppressing.

According to a twelfth aspect of the present invention, in the method for manufacturing a speaker according to any one of the second, sixth, seventh and eighth aspects, the step of applying or printing the conductive paste on the base material is performed by the speaker. By forming the conductor part so that an asymmetrical pattern is arranged with respect to the vertical axis of the, the balance of the surface weight of the vibrating part is disturbed, and the partial deviation of the rigidity is caused to cause the divided resonance of the diaphragm. It is characterized by suppressing.

The invention according to claim 13 of the present application is based on claim 1.
In the speaker described above, when the vibrating part has an elliptical shape, a plurality of conductor parts are formed in parallel with the major axis direction of the vibrating part, and physical properties such as rigidity intentionally cause anisotropy with the minor axis direction. It is characterized in that the vibration is suppressed to suppress the division resonance of the diaphragm to reduce the distortion.

With the above structure and manufacturing method, the conductive paste that has entered the inside of the woven fabric as the base material is fixed after the reaction and is integrated with the fibers to form a composite material. For example, PET resin or PC resin. Unlike the case where only the film surface is coated, phenomena such as peeling and warping due to vibration and low adhesion do not occur. Therefore, the diaphragm has a structure excellent in strength, and it is possible to improve the withstand input and extend the reproduction frequency to the low frequency region, that is, widen the band. Further, it is possible to reduce the distortion in the acoustic characteristics caused by the imbalance of the voice coil bobbin due to the connection of the lead wire and the gold thread wire. Further, since the lead wire using the metal wire can be eliminated, the soldering process is not required, and the speaker manufacturing work process can be automated.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) A speaker and a method of manufacturing the speaker according to a first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, a plain weave fabric (thickness: 50 μm) of a polyester fiber having a fiber diameter of 10 to 100 μm, for example, a fiber diameter of 20 μm is used as the substrate 1 of the diaphragm. In consideration of the margin required when the woven cloth is formed as a diaphragm, the conductive paste has a line width of 1 to 2 mm so as to keep a constant interval with a width slightly wider than the diameter of the voice coil. 2 is adjusted and applied to the base material 1 so as to have a thickness of about 100 μm, and the conductor portion 3 is formed.

The conductive paste 2 is made of a material in which a good conductor such as silver, copper, aluminum or an alloy thereof is added as fine powder to a resin. As a method of applying the conductive paste 2 on the base material 1, when the base material 1 is moved in the direction in which the conductor portion is formed, the conductive paste is made to flow out from two nozzles and continuously formed into a strip shape. The productivity of the conductor part 3 is improved. Further, as shown in FIG. 1, as the base material 1, one having a size capable of forming a single vibration plate is used, and a woven or non-woven fabric is wound into a roll with a predetermined width, and while the base material is pulled out from the roll, The conductive paste may be made to flow out from the two nozzles while keeping a constant interval so as to match the diameter of the coil.

Further, instead of forming the conductor portion by applying the conductive paste 2 to the base material 1, the roll-shaped base material 1 is fed out by a predetermined amount, and the conductor portion pattern is formed by a plurality of screen printing techniques. The productivity is improved when the group prints at the same time.

After the conductive paste 2 is applied, the entire base material 1 is dried at a predetermined temperature and time. Next, as shown in FIG. 2, a high-rigidity polymer resin 4 is applied in a circular shape to the portion of the base material 1 that becomes the vibrating portion. Further, as shown in FIG. 3, the flexible polymer resin 5 is applied to the edge portion of the diaphragm. Also in this case, if the roll-shaped substrate 1 is fed out by a predetermined amount, a plurality of sets of these patterns are provided in the vibrating portion and the edge portion, and simultaneously printed by using the screen printing technique, the productivity of the vibrating plate is improved. Then, the base material 1 coated with the polymer resin is subjected to heat compression molding at 200 ° C. for 5 minutes using a molding die.

As shown in FIG. 4, the molded product thus obtained is punched out into a dome shape with a collar having a diameter of 34 mm, for example.
The speaker diaphragm 6 is used. Next, as shown in FIG. 5, a voice coil bobbin 10 in which a terminal 8 is provided on the bobbin 7 and a voice coil 9 is wound is prepared. The diaphragm 6 is adhered to the voice coil hobbin 10 and the terminal 8 of the bobbin and the conductor portion 3 on the diaphragm are electrically joined using a conductive paste. FIG. 6 is an external view of the diaphragm 6 integrally connected in this way.

As shown in FIG. 1, the conductor portion 3 has a pattern of two parallel strips, but the widths of the two conductor portions may be wide enough not to contact each other. That is, by applying a conductive paste to the entire surface of the diaphragm and increasing the rigidity of the applied part, the split resonance is suppressed and the distortion is reduced, and at the same time, the line width is increased.
There is also a method of minimizing the electric resistance of the conductor portion.

Further, when forming the conductor portion using the conductive paste, a symmetrical pattern is applied to the vertical axis of the speaker to keep the balance of surface weight and reduce the partial deviation of rigidity. As a result, it is possible to suppress the split resonance of the diaphragm and reduce the distortion.

On the contrary, when the conductor portion is formed by using the conductive paste, a pattern asymmetrical with respect to the vertical axis of the speaker is provided, whereby the balance of surface weight can be intentionally disturbed. In this case, the rigidity is partially biased, the divided resonance of the diaphragm is suppressed, and the distortion can be reduced.

The shape of the diaphragm 6 is circular in FIGS. 1 to 6, but may be elliptical. In this case, by forming a plurality of sets of the conductor portions 3 in parallel with the major axis direction of the diaphragm, it is possible to intentionally cause anisotropy in physical properties such as rigidity with respect to the minor axis direction. In this way, the division resonance of the diaphragm 6 can be suppressed and the distortion can be reduced.

Next, as shown in FIG. 7 and FIG.
Wiring is performed using a conductive paste 13 from the joined portion of the frame 11 to the external terminal board 12. FIG. 7 is a top view of the frame 11 as seen from the mounting surface of the diaphragm 6. A large number of holes are provided along the outer periphery of the frame 11, and some of the holes are used as conductor through holes 11a and 11b. This through hole 1
Edges 1a and 11b and their peripheral portions, and the frame 11
The conductive paste 13 is applied to a part of the outermost periphery of the. FIG.
FIG. 4 is a bottom view seen from the back side of the frame 11. Attach the external terminal board 12 between the two through holes 11a and 11b,
The conductive paste 1 is provided between the edge of the through hole 11 and the external terminal.
3 is applied.

FIG. 9 is a sectional view taken along the line AB of FIG. As shown in the figure, the bonding portion of the diaphragm 6 and the frame 11 and the external terminal plate 12 are electrically connected. Then, the portions c and d shown in FIG. 7 and the portions a and b shown in FIG. 6 are aligned so that they are electrically coupled to each other, and a conductive adhesive is used to form the outer peripheral portion of the diaphragm 6 and the frame. 11 and 11 are bonded.
The portions other than c and d in the frame 11 are fixed by using an organic adhesive.

The speaker thus obtained has a diameter of 36 m.
m speaker unit with 2W input resistance. In addition, it is possible to set the lowest resonance frequency to the lower frequency side, because disconnection does not easily occur when the amplitude is large. Furthermore, it was possible to reduce the unnecessary resonance sound caused by the lead wire and the distortion caused by the rolling phenomenon. Table 1 shows the input resistance and the minimum resonance frequency of the speaker according to the present embodiment and the speaker of the conventional example.
A sound pressure frequency characteristic diagram is shown in FIG.

[Table 1]

As shown in Table 1, the load capacity is 0.5W to 2.0W and the minimum resonance frequency is 500Hz to 200H.
improved to z. Further, a curve e in FIG. 10 shows a sound pressure frequency characteristic, and in the present embodiment shown in (b), frequency peaks and dips are reduced in the low range and the middle range as compared with the conventional example shown in (a). I understand. The curve f in FIG. 10 represents 2nd distortion.

(Embodiment 2) Next, a second embodiment in which the strength of the base material is improved by impregnating the woven cloth as the base material with a conductive paste will be described. For example, as shown in FIG.
A conductive paste 22 is formed on a base material 21 (thickness: 50 μm) of a plain weave cloth of polyester fibers having a fiber diameter of 20 μm.
To have a width of 2 mm and a thickness of 100 μm to form a strip-shaped conductor portion 23.

Next, the conductive paste 22 is dried at a predetermined temperature and time. And using a molding die, 200 ℃,
In order to take out the test piece after performing the heat compression molding for 5 minutes.
As shown in FIG. 2, the diaphragm 24 is punched out. Then, the diaphragm 24 is cut into strips so that the conductor portion 23 serves as a target axis, and a test piece 25 as shown in FIG. 13A is prepared.

In addition, a base material 21 of the same woven cloth was used to form a flat plate under the same forming conditions, and the same diameter as that of the voice coil wire used in the conventional speaker (diameter 0.3 m
The copper wire of m) is attached using an adhesive, and the test piece 26 shown in FIG. 13B is prepared.

A tensile test is carried out on these two types of test pieces 25 and 26, and the tensile strength until conduction is lost due to the breakage of the conductive material of the conductor portion is measured. The results are shown in Table 2.

[Table 2]

As shown in this table, in the case of the test piece 26, that is, the copper wire + the woven cloth, the breakage occurred at 0.6 kg because the elongation of the woven cloth could not follow the copper wire. On the other hand, test piece 2
5, that is, in the case of the composite material of the conductive paste and the woven cloth, the continuity was maintained until the woven cloth was ruptured, and the limit was 4.8 kg. As described above, it is understood that the breakage of the conductor portion is less likely to occur in the case of low-frequency driving in which the diaphragm is largely displaced.

[0039]

As described above, according to the present invention, a fiber-resin composite can be obtained by applying or printing a conductive paste on a fiber base material such as a woven fabric and performing a thermoforming press. it can. Therefore, peeling or warpage does not occur, and it is possible to provide wiring having excellent strength on the diaphragm. For this reason, split resonance is unlikely to occur, and a small speaker having a wide band characteristic excellent in withstand input can be obtained. In addition, by fixing the frame on which the wiring pattern is made of conductive paste and the voice coil bobbin provided with terminals with a conductive adhesive, the voice coil and the external terminal are connected, and the soldering work is completely eliminated. It can be simplified.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a manufacturing process (1) of a diaphragm of a speaker according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a manufacturing process (No. 2) of the diaphragm of the speaker in the present embodiment.

FIG. 3 is an explanatory diagram showing a manufacturing process (3) of the diaphragm of the speaker in the present embodiment.

FIG. 4 is an explanatory diagram showing a punching process of the diaphragm of the speaker according to the present embodiment.

FIG. 5 is an explanatory diagram showing a step of joining the diaphragm and the voice coil bobbin in the present embodiment.

FIG. 6 is a molding appearance view of a diaphragm with a conductor portion in the speaker of the present embodiment.

FIG. 7 is a top view showing the frame structure of the speaker of the present embodiment.

FIG. 8 is a bottom view showing the frame structure of the speaker of the present embodiment.

FIG. 9 is a cross-sectional view showing the frame structure of the speaker of the present embodiment.

FIG. 10 is a frequency characteristic diagram of a speaker of the present embodiment and a conventional example.

FIG. 11 is a process diagram (1) of manufacturing a test piece of the diaphragm used in the speaker of the present embodiment.

FIG. 12 is a process diagram (2) of manufacturing a test piece of the diaphragm used in the speaker of the present embodiment.

FIG. 13 is a process diagram (3) of manufacturing the test piece of the diaphragm used in the speaker of the present embodiment.

[Explanation of symbols]

 1,21 Base material (ultrafine fiber woven cloth) 2,13,22 Conductive paste 3,23 Conductor part 4 High rigidity polymer resin 5 Flexible polymer resin 6,24 Vibration plate 7 Bobbin 8 Terminal 9 Voice coil 10 Voice coil bobbin 11 Frame 11a, 11b Through hole 9 Conductive paste 12 External terminal board 25, 26 Test piece

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location H04R 9/04 105 H04R 9/04 105A

Claims (13)

[Claims] 1. A base material composed of a fiber woven or non-woven fabric having a fiber diameter of 10 to 100 μm, a pair of conductor portions coated or printed on the base material with a conductive paste, and at least a part of the conductor portion. A diaphragm including a resin layer applied to the base material so as to cover the base material, a speaker frame elastically holding an outer peripheral portion of the diaphragm so as to electrically connect one end of each conductor, and a voice coil And a voice coil bobbin connected to one end of the voice coil and the other end of the conductor portion so as to apply a drive current to the voice coil through the conductor portion of the diaphragm. A speaker characterized in that 2. A pair of conductor portions are applied or printed using a conductive paste on a base material made of an ultrafine fiber woven fabric or nonwoven fabric having a fiber diameter of 10 to 100 μm, and a resin is coated so as to cover at least a part of the conductor portions. It is applied to the base material, the base material coated with the resin is thermoformed and pressed with a mold having a predetermined three-dimensional shape, and a portion in which the resin and the fibers of the base material are combined is a vibrating portion and an edge. A diaphragm is integrally molded, and a voice coil bobbin wound around a voice coil is attached to the inner peripheral part of the diaphragm, and the outer peripheral part of the diaphragm is attached to the speaker frame having a conductor for external connection formed on the outer periphery. And a drive current is applied to the voice coil through the conductor of the diaphragm. 3. The outer peripheral portion of the diaphragm and the outer peripheral portion of the frame, at least a connecting portion of the conductor portion is joined by using a conductive adhesive.
The described speaker. 4. The speaker frame is characterized in that wiring is provided using a conductive paste between a connecting portion of the diaphragm on which the conductor portion is formed and an external terminal. The speaker according to claim 1. 5. The speaker according to claim 1, wherein the conductive paste is a material in which silver, copper, aluminum or an alloy thereof is added as fine powder to a resin. 6. The method of manufacturing a speaker according to claim 2, wherein the conductive paste is a material in which silver, copper, aluminum or an alloy thereof is added as fine powder to a resin. 7. A fiber woven or non-woven fabric having a fiber diameter of 10 to 100 μm is used as a base material, and a plurality of conductor parts are simultaneously screen-printed on the base material by using a conductive paste, and at least a part of the conductor parts is formed. Resin is applied to the base material at a plurality of positions at regular intervals so as to cover, and each part of the base material to which the resin is applied is thermoformed and pressed by a mold having a predetermined three-dimensional shape, and the resin and the base material. Simultaneously integrally mold multiple sets of vibrating plates with the part that is composited with the fiber as the vibrating part and the edge, and attach each voice coil bobbin wound with a voice coil to the inner peripheral part of each vibrating plate and externally connect to the outer periphery A method for manufacturing a speaker, wherein a plurality of speakers are manufactured by bonding outer peripheral portions of the respective diaphragms to the respective speaker frames having conductors formed therein. 8. A roll-shaped fiber woven fabric or non-woven fabric having a fiber diameter of 10 to 100 μm is used as a base material, the base material is drawn out in a strip shape, and the conductive paste is continuously flowed out from a plurality of nozzles while maintaining a constant interval. To form or form a plurality of conductor portions by applying or impregnating the strip-shaped base material, and a resin is applied to the base material at a plurality of positions at regular intervals so as to cover at least a part of the conductor portion. Each part of the applied base material is thermoformed and pressed by a mold having a predetermined three-dimensional shape, and a plurality of vibration plates having a vibrating part and an edge at the composite part of the resin and the fiber of the base material are simultaneously set. Each voice coil bobbin wound integrally with a voice coil is attached to the inner peripheral part of each diaphragm, and the outer peripheral part of each diaphragm is attached to each speaker frame on the outer periphery of which a conductor for external connection is formed. Join The Rukoto method for producing a speaker, characterized in that so as to produce a plurality of speakers in a series of steps. 9. The step of applying a resin to the base material comprises applying or printing a polymer resin having different vibration characteristics to the vibrating portion and the edge portion of the base material, respectively. 9. A method of manufacturing a speaker according to any one of items 6, 6, 7 and 8. 10. The step of applying or printing a conductive paste on the base material is characterized in that the conductive paste is applied to the entire surface of the vibrating portion with an interval for insulating the pair of conductor portions. The method for manufacturing the speaker according to claim 2, 6, 7, or 8. 11. The step of applying or printing a conductive paste on the base material forms a conductor portion such that a target pattern is arranged with respect to a vertical axis of the speaker. ,
9. The method for manufacturing the speaker according to any one of 7 and 8. 12. The step of applying or printing a conductive paste on the base material forms a conductor portion such that an asymmetric pattern is arranged with respect to the vertical axis of the speaker.
9. The method for manufacturing a speaker according to any one of 6, 7, and 8. 13. The speaker according to claim 1, wherein when the vibrating portion has an elliptical shape, a plurality of the conductor portions are formed in parallel with the major axis direction of the vibrating portion.