JPH1051894A - Speaker damper - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a speaker damper incorporated in a speaker used for various kinds of audio equipment, which does not generate an abnormal sound even when a large input is continuously applied, and is excellent in amplitude. It is an object of the present invention to provide a speaker damper that can achieve linearity, is suitable for a speaker with high input resistance and high sound quality. SOLUTION: It is constituted by a thermoformed resin film,
By providing a structure having a plurality of holes 1 for ventilation, a speaker damper suitable for a speaker with high input resistance and high sound quality is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker damper incorporated in a speaker used for various audio equipment.

[0002]

2. Description of the Related Art In recent years, the spread of high-quality sources in audio equipment has progressed, and there has been a demand for a speaker with high input resistance and high sound quality. Along with this, the speaker damper must also endure high input and have high linearity at the time of amplitude.

[0003] Based on such a background, a conventional speaker damper will be described below. A conventional speaker damper is made of a woven fabric such as cotton, silk, or a chemical fiber as a base material, and is formed by heat molding a material impregnated with a thermosetting resin such as phenol.

[0004]

However, in the above-mentioned conventional configuration, if a large input is continuously applied, the portion of the fibers fixed by the thermosetting resin is destroyed, and misalignment occurs. There has been a problem that the resonance frequency is extremely lowered and an abnormal sound is generated. Also, due to temperature variations when the damper is molded,
Since the uncured resin remains, the adhesion between the fibers cannot be secured, and the linearity at the time of amplitude is poor.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional problems and to provide a speaker damper capable of achieving high input resistance and high sound quality.

[0006]

SUMMARY OF THE INVENTION In order to solve this problem, a speaker damper of the present invention is made of a resin film formed by heating and has a structure provided with a plurality of holes, thereby providing a high input resistance and a high input resistance. It is possible to provide a speaker damper suitable for a high-quality sound speaker.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION
It is composed of a thermoformed resin film and has a plurality of holes.Even if a large input is continuously applied, no misalignment occurs, and the lowest resonance frequency of the speaker hardly decreases, and abnormal noise is generated. In addition, it has an effect of being excellent in linearity at the time of amplitude.

According to the invention of claim 2, the resin film is of a track type, and is provided with an adhesive portion to the frame and a rising portion only in the long diameter direction, which is effective for use in a slim speaker. .

FIG. 1 shows an embodiment of the present invention.
This will be described with reference to FIG. (Embodiment 1) FIG. 1 is a plan view of a speaker damper according to the present invention, and FIG. 2 is a perspective view of the damper. According to the figure, a speaker damper A is made of a resin film which is heat-molded into a track type for a slim speaker (track type speaker), and has holes 1 for ventilation at ten locations. The flexibility can be adjusted by the size and number of the holes 1 for ventilation.

In the above speaker damper, even if a large input is continuously applied, misalignment unlike a conventional woven fabric does not occur,
Since the lowest resonance frequency of the speaker hardly decreases,
No abnormal sound is generated.

The speaker damper A has an adhesive portion 2 with a speaker frame (not shown) only in the long diameter direction.
And the rising portion 3 are provided. The bonding portion 2 and the rising portion 3 are not provided in the minor diameter direction, and a gap is generated between the outer peripheral portion of the speaker damper A in the minor diameter direction and the bottom surface of the speaker frame. It has a configuration. With this structure, a large amplitude can be obtained even for a speaker having a small width.

FIG. 3 is a characteristic diagram comparing the force / displacement characteristics of the speaker damper according to the present embodiment and the same characteristics of the conventional speaker damper. A solid line B indicates the speaker damper according to the present embodiment, and a broken line C 1 shows a conventional speaker damper.

As is apparent from FIG. 3, it is understood that the speaker damper of the present embodiment has better linearity than the conventional speaker damper.

As described above, in the speaker damper according to the present embodiment, when a large input is continuously applied, misalignment that occurs in a material obtained by impregnating a conventional woven fabric with a thermosetting resin does not occur. Since the lowest resonance frequency of the speaker hardly decreases, occurrence of abnormal sound caused by the speaker damper hitting a plate or the like as another component in the speaker or hitting the bottom of the voice coil is prevented,
Further, since the linearity is superior to that of the conventional speaker damper, the speaker damper can provide a speaker damper particularly suitable for a speaker with high input resistance and high sound quality.

In the above-described embodiment, the speaker damper is formed in a track shape, and the short diameter direction of the speaker damper has a structure in which the bonding portion 2 with the frame of the speaker and the rising portion 3 are eliminated. The structure is not limited to this, and may be formed into any shape of a circle, an ellipse, and an ellipse. In addition, a structure in which the bonding portion 2 and the rising portion 3 are provided in the minor axis direction as in the major axis direction. Needless to say, the same effects as those of the present embodiment can be obtained.

[0016]

As described above, since the loudspeaker damper according to the present invention is constructed, even if a large input is continuously applied,
Since there is no misalignment unlike the conventional woven cloth and the lowest resonance frequency of the speaker hardly decreases, no abnormal sound is generated. Also, since the linearity is better than the conventional speaker damper, this speaker By using the damper, it is possible to provide a speaker with high input resistance and high sound quality.

[Brief description of the drawings]

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

FIG. 2 is a perspective view of the same.

FIG. 3 is a characteristic diagram comparing the force and displacement characteristics of the speaker damper according to the present embodiment and a conventional speaker damper.

[Explanation of symbols]

 1 hole 2 bonding part 3 rising part

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takafumi Yuasa 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (2)

[Claims] 1. A thermoformed resin film,
Speaker damper with multiple holes. 2. The speaker damper according to claim 1, wherein the resin film is of a track type, and has a bonding portion with the frame and a rising portion provided only in the major axis direction.