JPS6214794Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is mainly used for high-pitched speakers (toeaters).
This relates to a Ritzfel type speaker used as a speaker.

The Ritzfel speaker is a type of speaker that improves the weakness of the ribbon speaker, which is mainly used as a high-pitched speaker (weak foil). A conventional example of the diaphragm and conductor of this Ritzfel type speaker is shown in FIG. In the figure, reference numeral 1 denotes a diaphragm made of aluminum or the like so that the cross section is approximately V-shaped, and 2 a thin, narrow strip-shaped conductor, which is bonded to the outer end of the bottom of the diaphragm 1. This conductor 2 is placed in a magnetic field created by a permanent magnet, and vibrates when a sound current is applied thereto.

However, in such a structure, it is difficult to attach the conductor 2 to the outer edge of the valley bottom of the diaphragm 1 along the valley bottom line, and the conductor 2 may deviate from the line or cross the line, resulting in poor mounting accuracy and poor adhesion. The disadvantage is that it may result in an unstable fixed state due to

This idea was made to eliminate the above-mentioned drawbacks, and by twisting the conductor held at the bottom of the diaphragm, which has a roughly V-shaped cross section, by 90 degrees and forming it into a wave shape, the conductor can be accurately Another object of the present invention is to provide a Ritzpel type speaker that can be reliably supported on a vibrating body and is easy to assemble.

This invention will be explained below based on the illustrated embodiments.

Figures 2 and 3 show an embodiment of this invention, in which 1 is a diaphragm with a substantially V-shaped cross section, 2 is a conductor,
3 is a permanent magnet, 4 is a yoke, and 5 is an edge.
The conductor 2 has a flat rectangular cross section, is placed at the bottom of the diaphragm 1, and is firmly held in place by forming recesses 1a on both sides of the diaphragm 1 by punching. Further, both ends 2a of the conductor 2 are twisted 90 degrees and formed into a wave shape, and the tips thereof serve as terminals for supplying audio current.

In the Riffel type speaker having the above configuration, when an audio current is applied to the conductor 2, the conductor 2 and the diaphragm 1 vibrate to generate sound. In this case, both ends 2a of the conductor 2 are twisted by 90 degrees and are formed into a wave shape, so that the conductor 2 vibrates smoothly. Moreover, since the main portion of the conductor 2 is held between the bottoms of the diaphragm 1 and is securely supported with good mounting accuracy and in a protected manner, electroacoustic conversion can be performed accurately. Furthermore, even if heat is generated in the conductor 2 due to energization, the generated heat will be dissipated through the diaphragm 1, and even if only the width of the conductor 2 is increased and a large current is passed, the heat dissipation will be good. be.

In the above embodiment, the clamping force of the conductor 2 is obtained by crimping the diaphragm 1 with a punch, but as shown in FIG. Even if the portion 1b is provided, it is possible to reliably support the vibrating portion without increasing its weight, as in the previous embodiment. Further, the number of conductors 2 is not limited to one, but may be a plurality of conductors, and the shape thereof can be changed.

As described above, according to this invention, since the conductor is held between the bottoms of the diaphragm, the fixed state is stable, the mounting accuracy is good, and assembly is easy. In addition, since both ends of the conductor are twisted 90 degrees and formed into a wave shape, there are various advantages such as the accuracy of the fixed state and the accurate vibration.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of the diaphragm and conductor of a conventional Ritzfel type speaker, Fig. 2 is a sectional view showing an example of the Ritzfel type speaker according to this invention, and Fig. 3 is a conductor in the same embodiment. FIG. 4 is a perspective view of the vicinity of the end and a sectional view showing another example of the conductor clamp. DESCRIPTION OF SYMBOLS 1... Vibration plate, 1a... Recessed part, 1b... Neck part, 2... Conductor, 2a... Conductor end, 3... Permanent magnet, 4... Yoke, 5... Edge. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims for Utility Model Registration] (1) In a Ritzfel-type speaker in which a conductor 2 is sandwiched at the bottom of a diaphragm 1 having a substantially V-shaped cross section, and this conductor 2 is placed in a magnetic field to conduct an audio current, the conductor A Ritzfel type speaker characterized in that both ends 2a of the speaker 1 are twisted 90 degrees and formed into a wave shape. (2) Using a flat conductor with a rectangular cross section as the conductor 2,
A Ritzfel type speaker according to claim 1, wherein both ends 2a are twisted by 90 degrees. (3) A Ritzfel type speaker according to claim 2, in which both ends 2a of the conductor 2 are wave-shaped.