JP2003153382A - 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 part of a lead wire 31 is fixed on a diaphragm 27 on the middle portion between a terminal 30 connected to the lead wire 31 of a voice coil 28 and lead-out portion of the voice coil 28.

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 In a conventional speaker, as shown in FIGS. 4 and 5, a magnetized magnet 1 is sandwiched between an upper plate 2 and a yoke 3 to form an inner magnet type magnetic circuit 4.
The frame 6 is coupled to the yoke 3 of the.

A terminal 10 is connected to the frame 6, a diaphragm 7 is adhered to the peripheral edge of the frame 6, and a voice coil 8 connected to the diaphragm 7 is fitted in the magnetic gap 5 of the magnetic circuit 4. Connect the lead wire 11 of the voice coil 8 to the terminal 10
I was soldering to.

[0004]

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.

[0006] The present invention solves the above problems and provides an excellent speaker which can realize high input resistance while achieving miniaturization and high sound pressure.

[0007]

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

According to the first aspect of the present invention, the terminal to which the lead wire of the voice coil is connected and the lead wire of the voice coil are formed in the diaphragm at the intermediate portion of the lead portion with silicon grease. It is fixed. With this configuration, even if a large input is applied and the voice coil vibrates up and down greatly, the middle part of the lead wire is fixed to the diaphragm with silicon grease.
Self-vibration due to the natural resonance of the lead wire is suppressed small,
The effect that disconnection can be prevented can be obtained.

According to a second aspect of the present invention, a part of the lead wire is made a diaphragm with a soft adhesive at an intermediate portion between the terminal to which the lead wire of the voice coil is joined and the lead wire lead-out portion of the voice coil. It is fixedly configured. With this configuration, even if a large input is applied and the voice coil vibrates greatly up and down, the middle part of the lead wire is fixed to the diaphragm with strong adhesive strength due to the soft adhesive, so self-vibration due to the natural resonance of the lead wire. Is suppressed to a small value, and the effect of being able to improve the reliability with respect to fixation to the diaphragm while preventing disconnection can be obtained.

According to a third aspect of the present invention, a part of the lead wire is fixed to the diaphragm by a double-sided tape at an intermediate portion between the terminal to which the lead wire of the voice coil is joined and the lead wire lead-out portion of the voice coil. It has been configured. With this configuration, even if a large input is applied and the voice coil vibrates greatly up and down, the middle part of the lead wire is fixed to the diaphragm with double-sided tape for good work efficiency, so self-vibration due to the natural resonance of the lead wire is simple. It can be suppressed to small values by various methods, and the effect of preventing disconnection can be obtained.

According to a fourth aspect of the present invention, a part of the lead wire is fixed to the diaphragm by taping at the intermediate portion between the terminal to which the lead wire of the voice coil is joined and the lead wire lead-out portion of the voice coil. It is configured by. With this configuration, even if a large input is applied and the voice coil vibrates greatly up and down, the middle part of the lead wire is fixed to the diaphragm by taping with good work efficiency, so self-vibration due to the natural resonance of the lead wire is easy. It can be suppressed to a small value by the method, and the effect of being able to improve the reliability with respect to fixing to the diaphragm while preventing disconnection can be obtained.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Note that description of similar contents will be omitted.

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

FIG. 1 is a cross-sectional view of a speaker according to an embodiment of the present invention, and FIG. 2 is a plan view of a work-in-process thereof, in which a magnetized magnet 21 is attached to an upper plate. It is sandwiched between 22 and the yoke 23 to form an inner magnet type magnetic circuit 24. 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 is connected to the terminal 30.
It was configured by soldering to. In this diaphragm 27, as shown in FIG. 2, a voice coil 28 is connected to the central portion thereof, a lead wire 31 is drawn out, and an intermediate portion of the lead wire 31 is provided on both sides of the fixed portion with a jig. The slack is provided, and the diaphragm 27 is fixed to the diaphragm 27 with silicon grease 32.

With this configuration, even if a large input is applied and the voice coil 28 vibrates greatly vertically, the lead wire 31
The middle part of the diaphragm 27 is made of silicon grease 32
Since the lead wire 31 is fixedly attached to the lead wire 31, self-vibration due to the natural resonance of the lead wire 31 is suppressed to a small extent, and disconnection can be prevented.

This is because the fixed part of the lead wire 31 reduces the effective wire length of the lead wire 31 capable of self-oscillation by about half, and the amplitude range due to the natural resonance becomes smaller. Therefore, the major factor is that the damage to the lead wire 31 due to the vibration is reduced.

As an effect other than the above, the lead wire 3
1 is one of the causes of disconnection, and the yoke 2 of the lead wire 31 near the lead wire 31 lead portion of the voice coil 28.
There is also an effect of preventing disconnection due to contact with 3. This is because the middle portion of the lead wire 31 is fixed to the diaphragm 27, so that the lead wire 31 is attached to the diaphragm 27.
This is because it is not possible to vibrate in the direction of the yoke 23 because the forming can be performed along the direction. Therefore, it is possible to prevent disconnection due to contact with the yoke 23 by this forming.

(Second Embodiment) The second embodiment of the present invention will be described below.

The difference from the first embodiment is that when the middle portion of the lead wire 31 of FIG. 1 is fixed to the diaphragm 27,
The point is that a soft adhesive such as rubber is used. By using this soft adhesive, since it can be firmly fixed to the diaphragm 27 with a strong adhesive strength, self-vibration due to the natural resonance of the lead wire 31 is suppressed to a small level, and the reliability of the fixation to the frame 26 is prevented while preventing the disconnection. Can be prevented.

(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 when the middle portion of the lead wire 31 of FIG. 1 is fixed to the diaphragm 27,
The point is that double-sided tape is used. By using this double-sided tape, the natural resonance of the lead wire 31 is suppressed to a small level, and it is possible to improve work efficiency for fixing to the frame 26 while preventing disconnection.

(Fourth Embodiment) The fourth embodiment of the present invention will be described below.

FIG. 3 is a plan view of a work-in-process for a speaker according to an embodiment of the present invention.

The difference from the first embodiment is that the lead wire 31
This is the point where taping is performed when fixing the intermediate portion of the above to the frame 26. By using the tape 33, it can be fixed to the frame 26 with good work efficiency, so that it can be realized by a simple method while preventing disconnection from self-vibration due to the natural resonance of the lead wire 31, and also fixed to the diaphragm 27. Reliability can be improved.

[0025]

As described above, in the speaker of the present invention, a part of the lead wire is fixed to the diaphragm at the intermediate portion between the terminal to which the lead wire of the voice coil is joined and the lead wire lead-out portion of the voice coil. It is composed. With this configuration, even when a large input is applied and the voice coil vibrates greatly vertically, the middle part of the lead wire is fixed to the diaphragm, so self-vibration due to the natural resonance of the lead wire is suppressed to a small extent, and wire breakage is prevented. Can be planned.

As described above, the present invention can provide an excellent speaker capable of realizing 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 plan view of the work-in-progress of the speaker according to the embodiment of the present invention.

FIG. 3 is a plan view of a work-in-progress for a speaker according to another embodiment of the present invention.

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

FIG. 5 is a plan view of a work-in-process product of a conventional speaker.

[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 32 Silicone grease

Claims (4)

[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 lead wire of the voice coil and the lead wire of the voice coil are connected to a diaphragm by using a part of the lead wire in an intermediate portion of a lead wire as a diaphragm. A speaker in which the lead wire is slackened on both sides of the fixed portion by fixing. 2. 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 comprising a terminal coupled to a frame, wherein the terminal to which the lead wire of the voice coil is coupled and a part of the lead wire in an intermediate portion of the lead wire lead portion of the voice coil are attached to a diaphragm by a soft adhesive. A speaker in which the lead wire is slackened on both sides of the fixed portion by fixing. 3. 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 comprising a terminal connected to a frame, wherein the terminal to which the lead wire of the voice coil is connected and a part of the lead wire in the middle of the lead wire lead-out portion of the voice coil are attached to a diaphragm by double-sided tape. A speaker that is fixed and has lead wire slack on both sides of this fixed portion. 4. 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 comprising a terminal coupled to a frame, wherein the terminal to which the lead wire of the voice coil is coupled and a part of the lead wire in an intermediate portion of the lead wire lead-out portion of the voice coil are fixed to a diaphragm by taping. Then, a speaker in which slack of the lead wire is provided on both sides of the fixed portion.