JPS5931116Y2 - speaker - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an adhesive structure for a dustproof body in a speaker having an elliptical diaphragm.

The adhesion structure of the dustproof body in a conventional speaker equipped with an elliptical diaphragm is as shown in FIG.
It has a structure in which the dustproof body 2 is bonded to the elliptical conical surface in the center, but since the bonding surfaces of the diaphragm 1 and the dustproof body 2 are both elliptical, the central axis or major axis (or rectangular The shaft) easily slipped, creating gaps in the bonded area, resulting in poor adhesion, and the dustproof effect was not sufficient.

The present invention improves the above-mentioned drawbacks of the conventional technology, and will be explained in the drawings below.

To explain with reference to FIG. 2, a semi-elliptic annular corrugation 3 is provided on the isometric plane of the elliptic conical surface of the elliptical diaphragm 1, and a rigid ring made of metal, non-ferrous metal such as aluminum, synthetic resin, etc. is attached to the corrugation 3. 5 is bonded to the rigid ring 5, and the outer peripheral end of the dustproof body 2 is bonded to this rigid ring 5.

FIG. 3 shows another embodiment in which the present invention is applied to a structure in which a high-frequency speaker unit 4 is arranged in the center of an elliptical diaphragm 1. It has a structure in which the outer peripheral surface of the speaker unit 4 is adhered, and the outer peripheral end is adhered to the rigid ring 5.

In the above structure, since the rigid ring 5 bonded to the corrugation 3 is on the contour plane of the elliptic conical surface of the elliptical diaphragm 1, the outer peripheral end of the dustproof body 2 and the rigid ring 5 are in close contact with each other.
There is no gap between the circumferential adhesion surfaces, the dustproof body 2 can be easily and reliably adhered, there are no adhesion defects, and the dustproof effect is sufficient.

Furthermore, since the elliptical diaphragm 1 is reinforced by the rigid ring 5, an ideal vibration mode is obtained in which abnormal vibrations such as flexural vibration of the diaphragm are suppressed.

Furthermore, since the rigid ring 5 acts as a weight ring and the mass of the diaphragm increases, the lowest resonant frequency f that determines the low frequency reproduction limit.

This has the advantage that the reproduction band can be expanded.

As described above, the present invention involves bonding a rigid ring to the corrugations provided on the contour plane of the elliptic conical surface of the elliptical diaphragm.
Since the dustproof body is bonded to this rigid ring, there is no possibility of poor adhesion of the dustproof body, the diaphragm is reinforced, an ideal vibration mode is obtained, and the low frequency reproduction band is expanded.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the structure of a conventional speaker, FIG. 2 is a diagram showing the structure of the speaker of the present invention, and FIG. 3 is a diagram showing another embodiment of the same. 1 is an elliptical diaphragm, 2 is a dustproof body, 3 is a corrugation,
5 is a rigid ring.

Claims (1)

[Scope of utility model registration request] In a structure in which a dustproof body 2 is bonded to the center of an elliptical diaphragm 1, a corrugation 3 is provided on a contour plane of the elliptical conical surface of the elliptical diaphragm 1, and a rigid ring 5 is bonded to the corrugation 3. At the same time, the outer peripheral end of the dustproof body 2 is bonded to this rigid ring 5 to provide a speaker.