JP2003319492A - Speaker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a speaker whose production cost can be reduced. <P>SOLUTION: In the speaker, especially, respective first and second lead wires 11, 12 of a voice coil 8 are led out to the backside or surrounding surface of the speaker via first and second conductive portions 18, 19 which are provided on either an upper plate 2, a lower plate 3a or a frame 6. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker used in various audio equipment, information communication equipment and the like, and more specifically to a structure thereof.

[0002]

2. Description of the Related Art The structure of a conventional speaker is shown in FIG.
This will be described with reference to FIG.

The speaker shown in FIG. 15 is generally called an outer magnet type. A magnet 21 magnetized so as to surround the convex portion of a lower plate 23 having a convex portion is arranged, and the magnet 21 is sandwiched between an upper plate 22 and a lower plate 23 to form a magnetic circuit 24. A frame 26 is attached to the upper plate 22 and the frame 2
6 are provided with terminals 31 respectively, and the frame 2
A diaphragm 27 is provided at the peripheral edge of the member 6. The voice coil 28 provided on the diaphragm 27 is fitted in the magnetic gap 25 of the magnetic circuit 24, and the lead wire 32 of the voice coil 28 is routed to the terminal 31 along the back surface of the diaphragm 27. Wired by soldering.

On the other hand, the speaker shown in FIG. 16 is generally called an inner magnet type, and the point greatly different from FIG. 15 lies in the position of the magnet 21 of the magnetic circuit 24. That is, the magnet 21 of the magnetic circuit 24 including the upper plate 22, the magnet 21, and the yoke 33 is arranged inside the yoke, that is, inside the voice coil 28. Another difference is that the frame 26 is provided on the yoke 33.

In any structure, the lead wire 3
2 is the same in that it is routed along the back surface of the diaphragm 27 to the terminal 31.

[0006]

The function of the terminal 31 is only to input an electric signal from the set side, and does not contribute to the improvement of acoustic characteristics. However, the component cost of the terminal, the production cost of mounting the terminal, and the production equipment cost occupy most of the total cost of the speaker, and there is a problem in cost reduction.

[0007] Therefore, an object of the present invention is to provide a speaker capable of cost reduction.

[0008]

In order to achieve this object, the invention according to claim 1 of the present invention, in particular, the first and second lead wires of the voice coil respectively have an upper plate and a lower plate. The speaker is led out to the back surface or the peripheral surface of the speaker through the first and second conductive parts provided on any of the frames. With the above configuration, the terminal can be eliminated, resulting in cost reduction. Can be achieved.

That is, the terminal can be eliminated by substituting the terminal for connecting the lead wire of the voice coil, and as a result, the cost of the terminal body, the production cost for connecting the terminal to the frame, and the production thereof. It is possible to reduce costs due to terminals such as equipment costs.

Further, regarding connection, soldering can be eliminated by considering a power supply structure with the set side, and as a result, connection including the set side can be simplified.

According to a second aspect of the present invention, a magnetic circuit, a voice coil having one end movably disposed in a magnetic gap provided in the magnetic circuit, and the other end of the voice coil are coupled to the voice coil. A diaphragm and a frame connecting the diaphragm and an outer peripheral surface of the magnetic circuit, wherein the magnetic circuit has a concave yoke,
A magnet provided on the surface of the recess, the magnetic gap provided between the peripheral surface of the magnet and the inner peripheral surface of the recess, and an upper plate provided on the surface of the magnet, Each of the first and second lead wires of the voice coil has the upper plate,
A speaker led out to a back surface or a peripheral surface of the speaker through first and second conductive portions provided on either the yoke or the frame, and an inner magnet type speaker according to the above configuration. It has the same action and effect as in No. 1.

The invention according to claim 3 of the present invention is the speaker according to claim 1 or 2, wherein the first and second conductive portions are electrically insulated by an insulator.
By providing the insulator, the first and second conductive parts can be provided in the same component.

The invention according to claim 4 of the present invention is the speaker according to claim 1 or claim 2, wherein the first and second lead wires are provided with a coating layer of an insulator. This has an effect that a short circuit between the lead wire and the second lead wire can be prevented.

The invention according to claim 5 of the present invention is the speaker according to claim 1 or 2, wherein the first and second lead wires are tinsel wires, and high withstand voltage input is possible with the tinsel wires. It has the effect of becoming

According to a sixth aspect of the present invention, the connecting portion between the first and second lead wires and the first and second conductive portions is at least one of a through hole and a recess. The speaker according to claim 1 or claim 2, wherein the connecting portion is formed as a through hole or a recess to increase the coupling area between the lead wire and the conductive portion, and as a result, the coupling strength can be improved. It has a working effect.

The invention according to claim 7 of the present invention is the speaker according to claim 6 in which a notch is provided in the opening of the through hole, and in particular, the lead wire in the opening is provided by providing the notch. It is possible to reduce stress on the lead wire, and as a result, it is possible to reduce disconnection of the lead wire.

The invention according to claim 8 of the present invention is the speaker according to claim 6 in which a notch is provided at a corner of the recess, and in particular, a corner is provided by providing a notch at the corner of the recess. It is possible to relieve the stress on the lead wire in the above, and as a result, it is possible to reduce the breakage of the lead wire.

The invention according to claim 9 of the present invention is the speaker according to claim 1 or claim 2 in which a spring terminal is provided on the frame, and in particular, by providing the spring terminal, it is stable with the set side. It has an effect that it can be joined.

The invention according to claim 10 of the present invention is the speaker according to claim 1 or 2, wherein the conductive portion is a mounting portion to a set, and simplification or reduction of wiring including the set side. It has the action and effect that enables

The invention according to claim 11 of the present invention is the speaker according to claim 10 in which the mounting portion is a spring terminal, and the mounting portion is a spring terminal for stable joining to the set side. In addition to the effect of being able to perform, it has the effect of being able to perform stable power supply.

The invention according to claim 12 of the present invention is the speaker according to claim 11 in which a lock mechanism is provided in the mounting portion, and by providing the lock mechanism, the mountability and connectivity with the set side are improved. It has the effect that it can be done.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a speaker of the present invention will be described with reference to embodiments and drawings.

(Embodiment 1) Hereinafter, the inventions described in claims 1 and 5 of the present invention will be described with reference to Embodiment 1 and FIG.

FIG. 1 is a sectional view of the speaker according to the first embodiment.

According to FIG. 1, magnetized magnet 1a
The frame 6 is coupled to the upper plate 2 of the outer magnet type magnetic circuit 4 formed by sandwiching the upper plate 2 and the lower plate 3a. Then, the diaphragm 7 is adhered to the peripheral portion of the frame 6, and the diaphragm 7
The voice coil 8 coupled to the magnetic circuit 5 is fitted in the magnetic gap 5 of the magnetic circuit 4. The first lead wire 11 of the voice coil 8 is connected to the upper plate 2 which is a conductive component, and the second lead wire 12 is connected to the lower plate 3a which is also a conductive component. Here, conductive parts are used as the upper plate 2 and the lower plate 3a, so that the upper plate body and the lower plate body serve as the first and second conductive portions 18 and 19, respectively. With this configuration, by using the upper plate 2 and the lower plate 3a as terminals for receiving electric signals from the set side, the terminals can be eliminated, and as a result, the number of speaker components can be reduced. Voice coil 8 above
The connection methods include soldering, bonding, welding, crimping,
Various methods such as caulking can be used.

The lower plate 3 of the second lead wire 12
The connection position to a may be not only the surface of the convex portion but also the surface of the non-convex portion, for example. In this case, the following method is used. That is, since the second lead wire 12 can be positioned below the voice coil by using the voice coil 8 having a one-layer winding structure or a three-layer winding structure, the second lead wire 12 can be connected to the surface of the non-convex portion.

As the lead wires 11 and 12, not only a generally used copper wire but also a tinsel wire can be used. In this case, there is an effect that a high withstand voltage input becomes possible.

The speaker of the first embodiment is an outer magnet type, and a ferrite type is generally used as the magnet 1a. Therefore, the upper plate 2 and the lower plate 3a, to which the lead wires 11 and 12 are respectively connected, are electrically insulated.

However, when the magnet 1a having conductivity is used, it is necessary to insulate the upper plate 2 and the lower plate 3a. The method and the like will be described in detail in the following embodiments and will be omitted here.

As described above, according to the configuration of the first embodiment, the terminal can be eliminated, and as a result, the cost can be reduced.

Further, regarding wiring, soldering can be eliminated by a power feeding method with the set side, and as a result, wiring can be simplified. Examples of this power feeding method include a method in which a spring terminal (not shown) is provided on the set side and the outer peripheral surface of the upper plate 2 and the peripheral surface or the rear surface of the lower plate 3a are contacted to supply power.

(Embodiment 2) The invention according to claim 1 will be further described with reference to Embodiment 2 and FIG.

FIG. 2 is a sectional view of the speaker according to the second embodiment. The difference from the first embodiment is that the first lead wire 11 of the voice coil 8 is connected to the frame 6,
That is, the main body is configured as the first conductive portion 18. According to this configuration, the frame 6 is connected to the set side.
Since it is a component having a relatively large surface area, it has an advantage that it can be easily used as a terminal for receiving an electric signal.

Except for the above, the configuration is the same as that of the first embodiment, and the description thereof is omitted.

(Embodiment 3) The invention described in claims 1 and 3 will be described with reference to the present embodiment 3 and FIG.

The third embodiment differs from the first embodiment in that the second lead wire 12 is connected to the frame 6 and the body of the frame 6 serves as the second conductive portion. The insulator 13 is interposed at the interface, and since the upper plate 2 and the frame 6 which are both conductive parts are coupled to each other and are in an electrically conductive state, an insulator such as an adhesive or a sealant is provided at the interface. 13 is provided to ensure insulation.

Except for the above, the configuration is the same as that of the first embodiment, and the description thereof is omitted.

According to the above structure, the upper plate 2 and the frame 6 can be used as terminals instead of the terminals, and as a result, the cost can be reduced. .

(Embodiment 4) The inventions described in claims 1 and 9 will be described with reference to this Embodiment 4 and FIG.

The fourth embodiment differs from the first embodiment in that a spring terminal 6a is provided on the frame 6, and the spring terminal 6a can stabilize the connection between the speaker and the set.

(Fifth Embodiment) Hereinafter, the invention according to claim 2 will be described with reference to the fifth embodiment and FIG.

FIG. 5 is a sectional view of the speaker according to the fifth embodiment, in which the first lead wire 11 of the voice coil 8 is connected to the upper plate 2 and the second lead wire 12 is connected to the yoke 3. The upper plate 2 and the first conductive portion 1
8, the yoke 3 is configured as the second conductive portion 19. The fifth embodiment differs from the first embodiment in that the magnetic circuit 4 is of an inner magnet type. Therefore, what corresponds to the lower plate 3a in the first embodiment is the yoke 3 in the fifth embodiment. In the first embodiment, since the magnetic circuit 4 is the outer magnet type, the magnet 1a is often a ferrite type which is a non-conductive material, and the upper plate 2 and the lower plate 3a are electrically insulated. In general, however, a plated magnet 1 is often used, and there is a case where the upper plate 2 and the yoke 3 are in a conductive state. In this case, an insulator 13 such as an adhesive or a sealing material is necessary. In the fifth embodiment, a method of insulating the magnet 1 and the yoke 3 with a sealing material is used. Since this sealing material is very thin, the performance of the magnetic circuit 4 is hardly impaired and the insulation can be surely performed.

As described above, according to the configuration of the fifth embodiment, the upper plate 2 and the yoke 3 can be used as terminals for receiving electric signals, so that the terminals can be eliminated. As a result, the number of parts of the speaker can be reduced. Reductions can be implemented.

In this case, as a method of supplying power to the yoke 3, a spring terminal is provided on the set side to contact and supply power, and as a method of supplying power to the upper plate 2, a needle-like terminal is provided from the set side. When the diaphragm 7 or the dust cap is provided from the front side, the soldering step can be eliminated by using the method of penetrating the dust cap and supplying electric power by contact.

The other structure is similar to that of the first embodiment, and the description thereof is omitted.

(Sixth Embodiment) The inventions described in claims 2 and 3 will be described below with reference to the sixth embodiment and FIG.

FIG. 6 is a cross-sectional view of the speaker according to the sixth embodiment, in which the first lead wire 11 is connected to the frame 6 and the second lead wire 12 is connected to the yoke 3, respectively. The first conductive portion 18 and the yoke 3 are used as the second conductive portion 19, and the yoke 3 and the frame 6 are electrically insulated. The difference from the first embodiment is that
The magnetic circuit 4 is of an inner magnet type, and the yoke 3 in the sixth embodiment corresponds to the lower plate 3a in the first embodiment. Further, a point different from the fifth embodiment is that the first lead wire 11 is connected to the frame 6, and the yoke 3 and the frame 6 which are both conductive parts are coupled and electrically connected. The interface is provided with an insulator 13 such as an adhesive or a sealing material.

As described above, according to the configuration of the sixth embodiment, the yoke 3 and the frame 6 can be replaced by the terminals for receiving the electric signals, whereby the terminals can be eliminated, and as a result, the number of speaker parts can be reduced. Can be realized.

The other structure is similar to that of the first embodiment, and the description thereof is omitted.

(Embodiment 7) The invention according to claims 2, 3, and 5 will be described below with reference to the present embodiment 7 and FIG.

FIG. 7 is a cross-sectional view of the speaker according to the seventh embodiment. The point different from the fifth embodiment is that the lead wire 11 of the voice coil 8 is formed by using the tinsel wire 14. .

The tinsel wire 14 of the voice coil 8
Are connected to the upper plate 2 and the yoke 3, which are conductive parts, respectively. With this configuration, the tinsel wire 14
The input resistance can be dramatically improved by using, and by using the upper plate 2 and the yoke 3 as terminals for receiving electric signals from the set side, the terminals can be eliminated and the number of speaker parts can be reduced. High input resistance can be realized.

The other structure is the same as that of the fifth embodiment, and the description thereof is omitted.

(Embodiment 8) The inventions described in claims 2, 3, and 6 will be described below with reference to the present embodiment 8 and FIG.

FIG. 8 shows a cross-sectional view of the speaker according to the eighth embodiment. The difference between the eighth embodiment and the fifth embodiment is that a through hole 15 is provided in the frame 6 and the upper plate 2. It is a point.

As described above, by providing the through hole 15, the connection area between the lead wires 11 and 12 and the conductive portion (frame 6 or upper plate 2) can be increased, and as a result, the connection strength is improved. Can be made. Further, the productivity can be greatly improved.

The other structure is the same as that of the fifth embodiment, and the description thereof is omitted.

(Ninth Embodiment) The inventions described in claims 2, 3, 6, and 8 will be described below with reference to the ninth embodiment and FIG.

FIG. 9 is a cross-sectional view of the speaker according to the ninth embodiment. The difference between the ninth embodiment and the eighth embodiment is that the frame 6 and the upper plate 2 have a recessed portion 16.
Is provided, and the same operational effect as that of the eighth embodiment is achieved.

The other structure is the same as that of the eighth embodiment, and the description thereof is omitted.

(Embodiment 10) Hereinafter, Embodiment 1 will be described.
The invention described in claims 2 to 4, 6 and 7 will be described with reference to FIGS.

FIG. 10 shows a cross-sectional view of the speaker in the tenth embodiment. The difference between the tenth embodiment and the eighth embodiment is that the frame 6 and the upper plate 2 are different.
This is because the notch 17 is provided in the opening of the through hole 15 provided in the above. Especially, the notch 17 can reduce the stress on the lead wires 11 and 12 at the corners. The disconnection of the wire 11 can be reduced.

The other structure is the same as that of the eighth embodiment, and the description thereof is omitted.

(Embodiment 11) The invention according to claims 10 to 12 will be described with reference to the eleventh embodiment and FIGS. 11 to 14.

FIG. 11 is a cross-sectional view of the speaker of the eleventh embodiment, and in particular, the lead-out portion is attached to the set side 6
It is a. This enables stable joining with the set side.

Further, FIG. 12 shows that the mounting portion 6a is used as a spring terminal, which enables not only stable joining to the set side but also stable feeding. The shape of the spring terminal 6a can be arbitrarily set according to the set side to be attached.

Further, as an example of the lock mechanism, FIG. 13 shows a spring terminal 6a provided with a barb. This return enables more stable power supply.

The parts provided with these mounting portions 6a are, for example, those configured by inserting a conductive metal body into a resin frame, and by inserting the above metal body when injection molding the resin frame. Obtainable.

The insulator 13 in the above embodiment is used.
Are provided to prevent short circuit, and the site where the insulator 13 is provided is selected according to the material to be constructed.

For example, in FIG. 1, when all of the upper plate 2, the magnet 1a, and the lower plate 3a have conductivity, the insulator 13 has an interface between the upper plate 2 and the magnet 1a or the magnet 1a and the lower plate 3a.
It may be provided at the interface of a. Therefore, the site where the insulator 13 is provided is not limited to the site shown in the embodiment.

Also, the first and second lead wires 11, 1
As shown in FIG. 14, the first and second lead wires 11, 1 are not the same as the parts for connecting the two.
It is also possible that both two are connected to the same part, here the lower plate 3a. In this case, the insulating lower plate 3a is used to provide the first and second conductive portions 18 and 19 made of, for example, plating or conductive resin, and the first and second conductive portions 18 and 19 are provided. Just connect. At that time, the insulator 13 is attached to the first and second lead wires 11 and 12.
It is possible to prevent a short circuit between the lead wires by providing each of the coating layers. As described above, the connection site of the first and second lead wires 11 and 12 is not limited to the site shown in the embodiment.

[0072]

As described above, according to the present invention, in particular, the first and second lead wires of the voice coil are provided on either the upper plate, the lower plate or the frame. The speaker is led out to the back surface or the peripheral surface of the speaker through the section. With the above configuration, the terminal can be eliminated, and as a result, cost reduction can be achieved.

That is, the terminal can be eliminated by substituting the terminal to which the lead wire of the voice coil is connected. As a result, the cost of the terminal body, the production cost for connecting the terminal to the frame, and the production It is possible to reduce costs due to terminals such as equipment costs.

Further, regarding connection, soldering can be eliminated by considering a power supply structure with the set side, and as a result, connection including the set side can be simplified.

[Brief description of drawings]

FIG. 1 is a sectional view of a speaker according to an embodiment of the present invention.

FIG. 2 is a sectional view of the same.

FIG. 3 is a sectional view of the same.

FIG. 4 is a sectional view of the same.

FIG. 5 is a sectional view of the same.

FIG. 6 is a sectional view of the same.

FIG. 7 is a sectional view of the same.

FIG. 8 is a sectional view of the same.

FIG. 9 is a sectional view of the same.

FIG. 10 is a sectional view of the same.

FIG. 11 is a sectional view of the same.

FIG. 12 is a sectional view of the same.

FIG. 13 is a sectional view of the same.

FIG. 14 is a sectional view of a conventional speaker.

FIG. 15 is a sectional view of the same.

FIG. 16 is a sectional view of the same.

[Explanation of symbols]

1 magnet 1a magnet 2 Upper plate 3 York 3a Lower plate 4 magnetic circuit 5 magnetic gap 6 frames 6a mounting part 7 diaphragm 8 voice coils 11 First lead wire 12 Second lead wire 13 Insulator 14 Kinshi Line 15 through holes 16 recess 17 notches 18 First conductive part 19 Second conductive part

Claims (12)

[Claims] 1. A magnetic circuit, a voice coil having one end movably disposed in a magnetic gap provided in the magnetic circuit, a diaphragm coupled to the other end of the voice coil, the diaphragm and the magnetic circuit. A speaker comprising a frame connecting to the surface of the magnetic circuit,
A lower plate having a convex portion in the center, a magnet provided on the surface of the lower plate so as to surround the convex portion,
A magnetic gap provided between an inner peripheral surface of the magnet and a peripheral surface of the convex portion; and an upper plate provided on the surface of the magnet, wherein the first and second voice coils are provided. A speaker in which each of the lead wires is led out to the back surface or the peripheral surface of the speaker through first and second conductive portions provided on any of the upper plate, the lower plate, and the frame. 2. A magnetic circuit, a voice coil having one end movably arranged in a magnetic gap provided in the magnetic circuit, a diaphragm coupled to the other end of the voice coil, the diaphragm and the magnetic circuit. In the speaker, the magnetic circuit includes a concave yoke, a magnet provided on a surface of the recess, and a peripheral surface of the magnet and an inner peripheral surface of the recess. Comprising the magnetic gap provided between them and an upper plate provided on the surface of the magnet, wherein each of the first and second lead wires of the voice coil comprises the upper plate, the yoke, and the A speaker led out to the back surface or the peripheral surface of the speaker via first and second conductive parts provided on any of the frames. 3. The speaker according to claim 1, wherein the first and second conductive parts are electrically insulated by an insulator. 4. The speaker according to claim 1, wherein the first and second lead wires are provided with a coating layer made of an insulating material. 5. The speaker according to claim 1, wherein the first and second lead wires are tinsel wires. 6. The speaker according to claim 1, wherein the connecting portion between the first and second lead wires and the first and second conductive portions is at least one of a through hole and a recess. 7. The speaker according to claim 6, wherein a cutout is provided in the opening of the through hole. 8. The cutout is provided at the corner of the recess.
The speaker described in. 9. The speaker according to claim 1, wherein the frame is provided with a spring terminal. 10. The speaker according to claim 1, wherein the conductive part is a mounting part to the set. 11. The mounting portion is a spring terminal.
The speaker described in 0. 12. The speaker according to claim 11, wherein a lock mechanism is provided in the mounting portion.