JPS5957599A - Headphone - Google Patents

Abstract

PURPOSE:To simplify the constitution of a headphone or the like, by inserting a diaphragm in parallel with two sets of lots of parallel conductor wire and taking as the diaphragm a magnetic film magnetized permanently in an orthogonal direction to the direction of the parallel conductor and to a vibration direction to improve the efficiency of a loud speaker or the like. CONSTITUTION:Lateral force is given to a magnet sandwiched by interposing the two sets of parallel conductor with a current conducting to the conductor to form the diaphragm 1 having the characteristic of a permanent magnet. A voice current is conducted to both ends of the parallel conductors to form the diaphragm 1 as the diaphragm for the headphone or the speaker or the like. Further, a magnetic body is provided around the conductor wires (conductors) 2, magnetism is provided in the form of a sandwich to the contuctors at both sides also, allowing to improve the efficiency of the headphone or the speaker or the like and to simplify the constitution of the headphone or the like.

Description

[Detailed description of the invention] The present invention relates to full-plane drive speakers.

Conventionally, this type of driving method has drawbacks such as requiring a heavy magnet and high voltage. The object of the invention is to obtain one that does not have this drawback.

The present invention will be explained based on the drawings as follows.

FIG. 1 is a diagram showing the principle of this invention. A magnet sandwiched between two sets of parallel conducting wires is subjected to a horizontal force due to an electric current.

FIG. 2 shows a practical configuration of this, and the diaphragm 1 is a film with permanent magnetism. A sound current is passed through the conductors on both sides.

FIG. 3 is a partially enlarged view of the magnetic film 1, in which conductors are further attached to both sides of the magnetic film 1 to allow direct current to flow therethrough.

Although FIG. 4 is different from the above, it is a principle diagram of a speaker having a configuration in which a diaphragm sandwiched between parallel conducting wires carrying direct current has a conducting wire 2 through which audio current flows.

FIG. 5 shows a case where a magnetic material is attached around the conducting wire (body) 2 in order to increase this efficiency. Efficiency can also be improved by attaching magnetic material to both outer conductors in a sandwich-like manner, similar to the one shown in Figure 5 on its side.

As explained above, the present invention has the effect of providing lightweight and high quality speakers with a simple configuration.

[Brief explanation of drawings]

1 to 5 are longitudinal sectional views seen from the side. Patent applicant: Masaru Ishizaki■

Claims (1)

[Claims] 1. Headphones and speakers whose diaphragm is a magnetic film that is sandwiched in parallel between two sets of many parallel conductive wires and is permanently magnetized in a direction perpendicular to the parallel conductive wires and the vibration direction.