JPS6224749A - Sounder structure of communication equipment - Google Patents

Abstract

PURPOSE:To oscillate sounder tone with high identification performance and to miniaturize the case by forming a resonance cavity of a sounder tone with a concaved part of a holder side opposed to a mouth piece and a front chamber of the mouth piece of a receiver while the receiver is set. CONSTITUTION:The circumferential ridge of a mouth piece front chamber 16 is formed to be in close with the circumferential ridge of a receiver front chamber 14 when a cover 2 is folded and the front chambers 14, 16 form a cavity. Since a sounding body 11 of a receiver 10 and a sounding source of a sounder consist of the same sounding body, the structure of a case main body 1A is simplified and miniaturized. Further, since the front chambers 14, 16 constitute the resonance cavity of the sounder while the case main body 1A and the cover 2 are folded, the sounder tone with high identification performance is oscillated with the sounding body 11 of the receiver 10 having a small sound pressure level.

Description

[Detailed Description of the Invention] [Summary] The sounding body of the handset and the sounding source of the sounder are composed of the same sounding body, and a resonant cavity of the sounder is provided in the front chamber of the earpiece when the handset is set. Provides a highly distinguishable sounder sound.

[Industrial application field]

The present invention relates to a sounder structure for a communication device.

Communication equipment, especially mobile phones that require small size and light weight.

In-vehicle telephones and the like are required to be able to reliably distinguish ring tones, alarm sounds, and other sounders from other noises even in a noisy outdoor environment.

[Conventional technology]

FIG. 2 is a perspective view of a conventional mobile phone equipped with a sounder mechanism, in which an earpiece 4 is provided at one end of a flat plate portion of a slender prismatic housing body 1, and a connecting shaft 3 is provided at the other end. An elongated rectangular plate-shaped cover portion 2 is provided which is foldable through the cover.

When the cover part 2 is opened with the connecting shaft 3 as the axis, a mouthpiece 6 is provided at the end of the cover part 2 opposite to the earpiece 4 in correspondence with the earpiece 4. . Further, a dial key 5 is disposed on the same plane plate portion of the housing body 1 on the side where the earpiece 4 is provided.

When a call is in progress, the cover part 2 is rotated around the connecting shaft 3.
By opening the housing body 1 and making it into a square shape, placing the earpiece 4 on the ear and the mouthpiece 6 on the mouth, all the functions of the telephone are accommodated within the other handset-shaped housing. , which is similar to a so-called handset type telephone.

Such a telephone can be folded in half in the direction in which the earpiece 4 and the mouthpiece 6 come into contact with each other. Dial key 5. While protecting the mouthpiece 6, it can be made into a portable shape that can be placed in a pocket or the like.
It is a convenient phone to carry.

This portable telephone is folded in half when not in use. Therefore, as a mechanism for emitting sounder sounds such as ringing tones and alarm sounds, a sound hole is provided on the flat side of the housing body 1 opposite to the dial key 5, that is, on the outer surface when folded. A sounder resonance cavity 7 and a sound source 8 are provided in communication with the hole.

Since the sounder resonance cavity 7 is provided in this manner, the sounder sound resonates at a desired frequency. Therefore, a highly distinguishable sounder sound can be transmitted with low power consumption.

[Problem that the invention seeks to solve]

However, in the conventional sounder structure described above, the sounding body of the handset and the sounding source 8 of the sounder are separate, making the structure complicated, and the sounder resonance cavity 7 is provided inside the housing body 1. There is a problem in that the internal mounting space of the housing body 1 is reduced, and miniaturization of the device is prevented.

[Means for solving problems]

In order to solve the above conventional problems, the present invention provides a telephone receiver 10.
The sounding body 11 of the sounder and the sounding source of the sounder are composed of the same sounding body, and when the handset 10 is set, the recess on the holder side facing the earpiece and the earpiece front chamber 14 of the handset 10,
It is designed to form a resonant cavity for sounder sound.

Furthermore, in a foldable telephone, the front chamber of the earpiece and the front chamber of the mouthpiece constitute a resonant cavity for the sounder sound.

[Effect]

According to the above means of the present invention, the sounding body 11 of the handset 10 and the sounding source of the sounder are constituted by the same sounding body, and also, the sounding body 11 of the handset 10 and the sounding source of the sounder are configured as the same sounding body, and the voice can be received while the handset 10 is set, not inside the housing body. Since the recess on the holder side facing the mouth and the listening chamber 14 of the handset 10 form a resonant cavity for sounder sound, the sounding body 11 of the handset 10 with a low sound pressure level can be shared as a sounder sound source. As devices become more compact, they are able to emit highly distinguishable sounder sounds.

〔Example〕

The present invention will be specifically explained below with reference to illustrated examples. Note that the same reference numerals indicate the same objects throughout the figures.

FIG. 1 is a side sectional view of one embodiment of the present invention, in which a telephone receiver 10 is provided at one end of a flat plate portion of a thin and elongated rectangular prism-shaped housing body IA, and a telephone receiver 10 is provided at the other end via a connecting shaft 3. A cover part 2 in the form of an elongated rectangular plate is provided.

The receiver 10 includes a sounding body 11 made of a diaphragm that is common to the sounding source of the sounder, and an earpiece front chamber 14 of a desired shape is provided on the open side of the sounding body 11.

On the other hand, when the cover part 2 is opened with the connecting shaft 3 as the axis, the end of the cover part 2 on the opposite side from the handset 10 has a recessed channel corresponding to the earpiece front chamber 14. A speaking front chamber 16 is provided. A microphone 12 is provided on the bottom of the mouthpiece front chamber 16 to form a transmitter.

The periphery of the mouthpiece front chamber 16 is formed so as to be in close contact with the periphery of the earpiece front chamber 14 when the cover part 2 is folded, and the mouthpiece front chamber 14 and the mouthpiece front chamber 16 are connected to each other. to form a cavity. This cavity is a resonant cavity that resonates at the desired frequency of the sounder.

In addition, when the cover part 2 is folded, a sound hole 13 that communicates the resonance cavity with the outside and transmits the sounder sound to the outside is installed.
It is provided on the wall of the mouthpiece front chamber 16.

As mentioned above, since the sounding body 11 of the handset 10 and the sounding source of the sounder are composed of the same sounding body, the housing body L
The structure of A is simple and small.

In addition, when the main body IA and the cover part 2 are folded, the earpiece front chamber 14 and the mouthpiece front chamber 16 form a resonance cavity of the sounder, so the earpiece 10 has a low sound pressure level.
With the sounding body 11, a highly distinguishable sounder sound can be emitted. Furthermore, since no resonance cavity is formed within the housing body, it is easy to make the housing body 18 small and thin.

The present invention is applicable not only to a foldable mobile phone as shown in the illustrated example, but also to a so-called handset-type car phone that houses all the functions of a phone in a handset-type housing, a wall-mounted phone, and a single phone. Applicable to wireless communication equipment, etc., the front chamber of the earpiece and the receiver have a recess facing the earpiece on the gold side to create a sounder.
It is also possible to form a sound resonant cavity.

〔Effect of the invention〕

As explained above, in the present invention, the sounding body of the handset and the sounding source of the sounder are constructed of the same sounding body, and a resonant cavity is constructed on the front chamber side of the earpiece, and a dedicated sounder is not provided. As a result, a highly distinguishable sounder sound can be transmitted, the structure is simple, and the casing can be made small, lightweight, and thin, and has excellent practical effects.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of one embodiment of the present invention, and FIG. 2 is a perspective view of a telephone equipped with a conventional sounder mechanism. In the figure, ■, 18 is the housing body, 2 is a part of the cover, 4 is the earpiece,
5 is the dial key, 6 is the mouthpiece,
8 is a sound source, 7 is a sounder resonance cavity, 10 is a receiver, 11 is a sounding body, 12 is a microphone, 14 is a front chamber of the earpiece, and 6 is a front chamber of the mouthpiece.

Claims (2)

[Claims] (1) The sounding body of the handset and the sounding source of the sounder are composed of the same sounding body, and when the handset is set, the recess on the holder side facing the earpiece and the earpiece front chamber of the handset are connected to the sounder. A sounder structure for a communication device characterized by forming a sound resonant cavity. (2) A sounder structure for a communication device according to claim 1, wherein the recess on the holder side facing the earpiece is a mouthpiece front chamber.