JPS6143100A - Vibrator - Google Patents

Abstract

PURPOSE:To obtain a vibrator for speakers, etc., which has high-fidelity and excellent tone quality by installing supporters at both ends of a diaphragm and supporting the diaphragm with said supporters. CONSTITUTION:A diaphragm 5 is installed at the center of a bobbin 4, and a voice coil 6 is wound around both ends of the bobbin 4, and then these are formed into one body for functioning as a vibrating element 7 of a honeycomb or corn. Further, the coil 6 is placed between magnetic poles of a yoke 11 and a center pole 10 of a magnetic circuit 9 which has a magnet 8. A supporter 12 is installed between the coil 6 and yoke 11, supports said coil 6 and bobbin 4, is not brought into contact with the magnetic circuit 9 and also works as a damper. Since the supporter 12 seals hermitically the interior of the bobbin 4 to form an air chamber 15, a large stroke and a precise and quick response are made possible, thereby improving the efficiency with respect to the precise reproduction and input of an original sound.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a vibrating device characterized by supporting the diaphragm by providing supports on both sides of the diaphragm, thereby producing a speaker with high fidelity and excellent sound quality. It is possible to obtain a vibration device such as the following.

Figure 1 shows a known speaker in which a vibration cone 3 is supported by an edge 1 and a damper 2, but the amplitude is limited and there is a lot of distortion. However, it is unstable and makes it difficult to obtain high quality and high output.

FIG. 2 shows an embodiment of the present invention, in which a diaphragm 5 is provided in the center of a bobbin 4, a voice coil 6 is wound around both ends of the bobbin 4, and these are integrated into a vibration element 7 in the form of a honeycomb, a cone, or a magnet. The voice coil 6 is inserted between the magnetic poles of the center ball 10 and the yoke 11 of the magnetic circuit 9 having a magnetic circuit 9, and a supporter 12 is provided between the voice coil 6 and the yoke 11 to support the voice coil and the bobbin and provide magnetic support. This is a vibrating device that does not come into contact with the circuit and also acts as a damper.

In all known speakers, the edge 1 of the diaphragm is fixed to the box I3, as shown in FIG. Supports 12 are provided on both sides of the diaphragm 5 to prevent this from occurring.

Since the support element I2 seals the inside of the bobbin 4 to form an air chamber 15, there is no need for a damper for braking as in the past, and since the diaphragm is supported on both sides across the diaphragm, there is no need to support the diaphragm edge. Also, since it is not necessary to fill the gap between the magnetic circuit and the magnetic fluid, a large stroke and accurate and quick response are possible, and the accurate reproduction of the original sound and the efficiency with respect to input are significantly improved compared to known speakers. Note that the supporter 12 may be replaced with a damper.

In FIG. 3, two partition walls 16 are provided in the bobbin to reduce the size of the sealed chamber formed by the center ball 10 and to improve damping control.

In the above embodiment, the diaphragm is oriented horizontally, but Fig. 4 shows an embodiment of the present invention in which the diaphragm is oriented vertically and the sound is produced from the front of the listener. Sound can be emitted from the front of the cabinet like a speaker.

Note that the magnetic circuit 9 is supported by an arm-shaped holder 17 in the box 13 in which the speaker is mounted in the previous case.

The present invention is a new method in which supports are provided on both sides of the diaphragm, but the edges of the diaphragm are not supported, so the amplitude of the diaphragm can be extremely large, and even at large amplitudes, the voice coil and the magnetic circuit do not come into contact. Furthermore, since multi-dimensional resonance of the diaphragm does not occur, this invention has many remarkable effects that enable high output and distortion-free reproduction.In addition, it does not use compressed air from a compressor, a magnetic field, or a magnetic fluid to act as a separator. Low cost, long life and less failure.

In addition to the above-mentioned embodiments, various modifications such as supporting with air from a compressor, introducing magnetic fluid, supporting with a magnetic field, supporting the edge, etc. It is included in the invention.

[Brief explanation of drawings]

Figure 1 is a longitudinal cross-sectional view of a known speaker. FIG. 2 is a vertical cross-sectional view of the first embodiment of the present invention. FIG. 3 is a vertical cross-sectional view of the second embodiment of the present invention. FIG. 4 is a vertical cross-sectional view of the third embodiment of the present invention. 5... Vibration plate

Claims (1)

[Claims] A vibrating device characterized by supporting the diaphragm by providing supports on both sides of the diaphragm.