Mobile phone employing bone conduction device

Abstract

One surface of a housing (1) is furnished with an opening (2) larger in diameter than a bone conduction device (3) placed therein. A cushioning material (4) is arranged on the inside surface of the opening (2), and an abutting member (7) secured to a plate yoke (15) constituting the bone conduction device (3) is supported on the cushioning material (4), such that the top surface thereof is positioned slightly above the surface of the housing (1). The cushioning material (4) is an annular disk in which is formed a center hole (5) slightly smaller in diameter than the outside diameter of the bone conduction device (3). The outside peripheral half of the cushioning material (4) is secured resting on the upper edge of the opening (2) of the housing (1), and the outside edge of the abutting member (7) is secured resting on the upper edge of the center hole (5) of the cushioning material (4).

Description

technical field [0001] The present invention relates to a portable telephone using a bone conduction device, and in more detail, relates to a mobile phone using a bone conduction device as a speaker and / or a microphone, when using the bone conduction device close to the head to listen to the voice of a call, and in addition to A portable phone that picks up sound through bone conduction. Background technique [0002] In the case where the bone conduction device is installed on the phone body, if it is directly fixed to the phone body casing, the entire casing vibrates, that is, sound leakage occurs, and the condition is poor. In order to solve this problem, the bone conduction speaker 31 in the conventional mobile phone using the bone conduction speaker is provided in the recessed part 33 provided at an appropriate position of the casing 32 in the thickness direction, and is used to secure the gap between the casing 32 and the casing 32. It is provided by accommodating the ...

AI Technical Summary

Problems solved by technology

[0003] In the case of the above-mentioned conventional mobile phone using the speaker of the bone conduction device, it is convenient to hear the voice of the call clearly even under the noise. Buffer material 34, so there is a fear that it will become thicker than in the case of a portable phone using a sound pressure type speaker

Especially in the case of a foldable model, the sense of incongruity due to the increase in thickness becomes noticeable.

[0004] In addition, in the case of the above configuration, in order to control the thickness, a thin material is used for the cushioning material, so the cushioning effect of the cushioning material is weak, and the isolation between the casing and the bone conduction speaker cannot be sufficiently ensured.

As a result, the echo return becomes large, so there is a problem that high power cannot be output in order to avoid the echo return becoming large

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