Electromagnetic converter

An electromagnetic converter, magnetic flux technology, applied in the direction of sensors, electrical components, diaphragm structures, etc., can solve problems such as abnormal noise and poor performance, and achieve the effect of suppressing resonance, improving performance, and suppressing the generation of abnormal noise.

Active Publication Date: 2011-05-18
MITSUBISHI ELECTRIC ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, in the above-mentioned conventional electromagnetic transducer, a flat-plate-shaped vibration plate made of a thin and flexible polymer film is used. When reproducing a low range, the vibration plate may resonate when the vibration plate vibrates. Issues that emit abnormal noise
In addition, there is a problem of poor performance due to resonance of the vibration plate

Method used

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Experimental program
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Embodiment approach 1

[0032] figure 1 Showing the appearance of electromagnetic transducer 10 according to Embodiment 1 of the present invention, figure 1 (a) is a front view showing the appearance of the electromagnetic transducer 10, figure 1 (b) is a side view showing the appearance of the electromagnetic converter 10 viewed from the long side, figure 1 (c) is a side view showing the appearance of the electromagnetic transducer 10 viewed from the short side, figure 1 (d) is a rear view showing the appearance of the electromagnetic converter 10 .

[0033] Such as figure 1 (a), figure 1 As shown in (d), in the electromagnetic transducer 10, the housing 15 has sound radiation holes 15a formed at regular intervals on both sides, as shown in figure 1 (b), figure 1 As shown in (c), the frame body 15 is configured by combining the upper side frame body 16 and the lower side frame body 17 . In addition, for the sake of explanation, a distinction is given between the upper frame body 16 and the lo...

Embodiment approach 2

[0063] In Embodiment 1, the structure in which a plurality of permanent magnets 32 and 33 are provided is described, but in Embodiment 2, the structure in which the size of the electromagnetic transducer 10 is miniaturized is used. Figure 8~Figure 13 Be explained. In addition, in order to avoid duplication of description, the same reference numerals are assigned to the same configurations as those in Embodiment 1, and description thereof will be omitted.

[0064] Figure 8 Showing the appearance of electromagnetic transducer 10 according to Embodiment 2 of the present invention, Figure 8 (a) is a front view showing the appearance of the electromagnetic transducer 10, Figure 8 (b) is a side view showing the appearance of the electromagnetic converter 10 viewed from the long side, Figure 8 (c) is a side view showing the appearance of the electromagnetic transducer 10 viewed from the short side, Figure 8 (d) is a rear view showing the appearance of the electromagnetic co...

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Abstract

A hollow inner section is formed when a pair of frames (16, 17) are combined, and a plate (38) which concentrates a magnetic flux is arranged on permanent magnets (32, 33) arranged inside the pair of frames (16, 17). In a diaphragm (21), a coil pattern (21b) which receives the magnetic flux from the plate (38) is formed on the vibrating film (21a), and the vibrating film (21a) having uniform thickness is formed as an uneven solid structure.

Description

technical field [0001] The present invention relates to an electromagnetic transducer that combines a permanent magnet and a vibration plate to reproduce sound from an audio signal. Background technique [0002] Among the conventional electromagnetic transducers combining permanent magnets and vibrating plates, there are electromagnetic transducers in which permanent magnets and vibrating plates are arranged to face each other, and there are electromagnetic transducers in which a cushioning material is arranged between permanent magnets and vibrating plates. These permanent magnets, vibrating plates, and cushioning materials are covered so as to be sandwiched by members such as a frame, and are attached to, for example, a speaker cabinet. [0003] The permanent magnet of this type of electromagnetic transducer has strip-shaped magnet portions of different polarities alternately arranged at regular intervals (also referred to as a multi-pole magnetization pattern). In additi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R9/00H04R7/14
CPCH04R2307/025H04R9/048H04R7/24H04R2307/027H04R7/14H04R9/06H04R9/046
Inventor 吉田俊治
Owner MITSUBISHI ELECTRIC ENG CO LTD
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