JP2003153385A - Speaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem of the compatibility between miniaturization, high sound pressure and high withstand input in a speaker applied to various acoustic devices and information communicating devices. SOLUTION: In this speaker, a voice coil consists of a plurality of i.e., two or more magnet wires, and a lead wire is led out for each winding, thereby enabling a constitution in which a lead wire between the voice coil and a terminal to consist of a plurality of i.e., two or more magnet wires.

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 and information communication equipment.

[0002]

2. Description of the Related Art A conventional speaker will be described with reference to FIGS.

FIG. 4 is a sectional view of a conventional speaker, and FIG. 5 is an external view of a conventional voice coil, in which a magnet 1 magnetized is sandwiched between an upper plate 2 and a yoke 3. Yoke 3 of magnetic type magnetic circuit 4
The frame 6 is connected to the.

A terminal 10 is connected to the frame 6, a diaphragm 7 is adhered to the peripheral portion of the frame 6, and a voice coil 8 shown in FIG. 5 connected to the diaphragm 7 is connected to the magnetic gap 5 of the magnetic circuit 4. The lead wire 11 of the voice coil 8 was soldered to the terminal 10 so as to be fitted into the terminal 10.

[0005]

The above-mentioned speaker is aimed at downsizing and high sound pressure, and the voice coil 8 does not use a gold thread wire in order to reduce the weight of the vibration system and reduce the space. The lead wire 11 of the coil 8 is directly soldered to the terminal 10.

In this structure, the lead wire 1 of the voice coil 8 is used.
The self-vibration becomes large due to the natural resonance of 1, and the lead wire 11 may be broken when a large input is applied.
Therefore, there is a problem that it is not possible to achieve high input resistance of the speaker.

The present invention solves the above problems, and provides an excellent speaker that can achieve high input resistance while achieving miniaturization and high sound pressure.

[0008]

In order to solve the above problems, the present invention has the following constitution.

According to the first aspect of the present invention, the voice coil is composed of two or more magnet wires, and the lead wire between the voice coil and the terminal is the two or more magnet wires. It is formed by extending a wire. With this configuration, even if a large input is applied and the voice coil vibrates up and down greatly, it is possible to prevent breakage by improving bending fatigue strength by the lead wire composed of two or more magnet wires. The effect is obtained.

According to a second aspect of the present invention, in addition to the first aspect, a plurality of two or more magnet wires in the lead wire portion are stranded. With this configuration, even if a large input is applied and the voice coil vibrates up and down greatly, the bending fatigue strength can be further improved by the lead wire composed of the twisted wires of two or more magnet wires. Since the self-vibration due to the natural resonance of the lead wire can be suppressed to a small level by using a stranded wire, the effect of preventing disconnection can be obtained.

According to a third aspect of the present invention, in addition to the first aspect, two or more magnet wires in the lead wire portion are connected by an adhesive. With this configuration, even if a large input is applied and the voice coil vibrates up and down greatly, the bending fatigue strength is further improved by the lead wire configured by bonding two or more magnet wires with an adhesive. Since the self-vibration due to the natural resonance of one lead wire can be suppressed to a small level by bonding with an adhesive, it is possible to obtain the effect of preventing disconnection.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In addition, about the same content, the description is simplified and demonstrated.

(First Embodiment) The first embodiment of the present invention will be described below, particularly, the invention described in claim 1.

FIG. 1 is a sectional view of a speaker according to an embodiment of the present invention, and FIG. 2 is an external view of the voice coil.

As shown in FIGS. 1 and 2, an inner magnet type magnetic circuit 24 is constructed by sandwiching a magnetized magnet 21 between an upper plate 22 and a yoke 23. A frame 26 is coupled to the yoke 23 of the magnetic circuit 24, a terminal 30 is coupled to the frame 26, a diaphragm 27 is adhered to a peripheral portion of the frame 26, and a voice coil 28 coupled to the diaphragm 27 is connected to the magnetic field. The circuit 24 is coupled so as to fit in the magnetic gap 25. Then, the lead wire 31 of the voice coil 28
Was soldered to the terminal 30.

Here, as shown in FIG. 2, the voice coil 28 is composed of two or more magnet wires, each of which is extended to lead out a lead wire 31. Then, by coupling this lead wire 31 to the terminal 30, the coils of each layer are connected in parallel. With this structure, the lead wire 31 between the voice coil 28 and the terminal 30 can be composed of two or more magnet wires. Therefore, even if a large input is applied and the voice coil 28 vibrates largely vertically,
The breakage can be prevented by improving the bending fatigue strength by the lead wire 31 composed of a plurality of magnet wires of at least two.

(Second Embodiment) The second embodiment of the present invention will be described below, particularly the invention described in claim 2.

FIG. 3 is an external view of a voice coil according to an embodiment of the present invention.

The difference from the first embodiment is that the lead wire 31
That is, the two or more magnet wires in the part are formed as a stranded wire. With this configuration, even if a large input is applied and the voice coil 28 vibrates greatly in the vertical direction, the bending fatigue strength can be further improved by the lead wire 31 composed of a twisted wire of two or more magnet wires. Since the self-vibration due to the natural resonance of one lead wire 31 can be suppressed to a small value by using a stranded wire,
It is possible to prevent disconnection.

(Third Embodiment) The third embodiment of the present invention will be described below with reference to the present invention.

The difference from the first embodiment is that the lead wire 31
Two or more magnet wires in a portion are connected by an adhesive. With this configuration,
Even if a large input is applied and the voice coil 28 vibrates up and down significantly, the bending fatigue strength is further improved by the lead wire 31 configured by bonding two or more magnet wires with an adhesive, and Since the self-vibration due to the natural resonance of the lead wire 31 can be suppressed to a small level by bonding with an adhesive, disconnection can be prevented.

[0022]

As described above, in the speaker of the present invention, the voice coil is composed of two or more magnet wires, and the lead wire between the voice coil and the terminal is the two or more magnet wires. This is an extension of a magnet wire. With this configuration, even if a large input is applied and the voice coil vibrates up and down greatly, the bending fatigue strength is improved by the lead wire composed of two or more magnet wires, so that disconnection can be prevented. You can Therefore, the input resistance of the speaker can be improved.

As described above, the present invention can provide an excellent speaker that can realize high input resistance while achieving miniaturization and high sound pressure, and its industrial value is extremely great.

[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 perspective view of a voice coil according to an embodiment of the present invention.

FIG. 3 is a perspective view of a voice coil according to another embodiment of the present invention.

FIG. 4 is a sectional view of a conventional speaker.

FIG. 5 is a perspective view of a conventional voice coil.

[Explanation of symbols]

21 magnet 22 Upper plate 23 York 24 Magnetic circuit 25 magnetic gap 26 frames 27 diaphragm 28 voice coils 30 terminals 31 lead wire

Claims (3)

[Claims] 1. A frame coupled to a magnetic circuit, a diaphragm coupled to the frame, a voice coil coupled to the diaphragm, a part of which is disposed in a magnetic gap of the magnetic circuit, A speaker including a terminal coupled to a frame, wherein the voice coil is composed of two or more magnet wires, and a lead wire between the voice coil and the terminal is composed of the two or more magnet wires. A speaker formed by extending the magnet wire of. 2. The speaker according to claim 1, wherein the lead wire is formed by twisting two or more magnet wires. 3. The speaker according to claim 1, wherein the lead wire is formed by joining two or more magnet wires with an adhesive.