JPS63272251A - Handset - Google Patents

Abstract

PURPOSE:To prevent sound passing holes from being choked even when a user presses its check or chin onto a face of the handset by forming grooves prolonged at least in two directions from the sound passing holes and having the end opening at the circumferential side face of the handset to the face of the handset. CONSTITUTION:One or plural sound passing holes 15 are pierced to the middle of the face 13a of the handset and the grooves 16 passing through respective sound passing holes 15 are formed. The grooves 16 are formed in parallel with an imaginary line A tying the center of the face 12a and the center of the face 13a and the end parts 16a, 16b are opened to the circumferential side face 13b of the handset 13. Even if the entire of the face 13a of the handset is covered by a check or chin, the openings of the ends 16a, 16b of the slot 16 are not choked. Thus, the voice of a caller reaches the sound passing hole 15 from the openings of the ends 16a, 16b through the grooves 16 and reaches the handset via said sound passing hole 15.

Description

DETAILED DESCRIPTION OF THE INVENTION (Object of the Invention) (Industrial Field of Application) The present invention relates to a handset, and more particularly to the structure of a transmitting section of a handset case.

(Prior Art) FIG. 6 shows a hand hit of a general telephone set.

In the case 1 of this Handle I, both ends are made to protrude to one side to form a receiver section 2 J3 and a transmitter section 3. The receiving surface 2a of the receiving section 2 is formed with a concave portion having a relatively large curvature in order to provide good contact with the ear, and a sound emitting hole 4 is bored in the center of the concave portion.

The transmitting surface 3a of the transmitting section 3 is usually formed with a concave portion having a small curvature or is flat, and sound holes 5 are bored at appropriate locations on the surface.

(Problem to be solved by the invention) By the way, how to use such a handset normally,
In other words, there is no problem when using the handset by holding the grip part 6 in the hand, but when making a call while holding the hand pit between the shoulder and cheek as shown in Fig. 7, there is no problem. There is a risk that the sound hole 5 opened in the speaking surface 3a will be completely blocked by the cheek or chin, and the transmitted sound will not reach the other party. In order to solve these problems, it is possible to drill the N through hole 5 in the peripheral side surface 3b of the transmitting part 3, but this would complicate the installation structure of the transmitter and the structure of the front air chamber. Problems arise such as increased costs due to the addition of parts and the inability to obtain the desired acoustic performance.

Therefore, it is an object of the present invention to provide a handset in which the communication hole is not blocked even when the speaker presses his or her cheek or chin against the speaking surface, and the acoustic performance is not deteriorated.
Spell the target.

(Structure of the defense) (Means for solving the problem) In the handset of Kimitsuaki, a groove is formed on the transmitting surface that extends from the N through hole in at least two directions and has an end opening on the peripheral side of the transmitting section. are doing.

(Function) In the handset of the present invention, even if the speaking surface is covered by the cheek or chin, the n-through hole is opened on the circumferential side of the speaking portion through the groove. Therefore, the voice of the caller reaches the n-hole through the groove, and then reaches the transmitter via the n-hole.

(Embodiment) FIG. 1 shows an embodiment of a handset according to the present invention.

A case 11 of this handset has both ends protruding to one side to form a receiver section 12 and a transmitter section 13. Four parts 12b having a relatively large curvature are formed on the receiving surface 12a of the receiving part 12, and a sound emitting hole 14 is formed in the center of the four parts 12b.
is drilled.

Further, the speaking surface 13a of the speaking section 13 is formed flat. This transmission surface 13a has one or several ff! ] (8 in the embodiment) n through holes 15 are bored, and roughly 16 holes are formed that pass through each n through hole 15. This full 16 points are the center of the receiving surface 12a and the transmitting part 13.
The end portion 16 is formed parallel to the imaginary line A connecting the center of
a and 16b are opened to the peripheral side surface 13b of the transmitter section 13. In addition, in FIG. 1, the reference numeral 17 is a grip portion.

Even if the person using such a handset holds the handset between his shoulders and cheeks as shown in FIG.
End 16a of groove 16.

The opening of 16b is secured without being blocked. Therefore, the voice of the caller is heard at their end 16a.

16b through the groove 16 to the n through hole 15, and the n through hole 15 is reached through the groove 16.
It reaches the transmitter via the through hole 15.

In the above embodiment, the groove 16 is formed parallel to the virtual line A connecting the center of the receiving surface 12a and the center of the transmitting surface 13a, but the present invention is not limited to the above embodiment. In short, even when your cheek or chin is in close contact with the transmitting part 13a, the groove 16
The N through hole 15 may be opened to the outside through the N through hole 15, and for this purpose, the N through hole 16 may extend from the N through hole 15 in at least two directions and have an end opening on the circumferential side of the transmitting part.

FIGS. 2 to 5 illustrate embodiments of the groove 16. FIG. Second
Vertical grooves 16' and lateral grooves 16'' are formed in the transmission surface 13a shown in the figure. Both ends of these grooves 16' and 16'' open to the circumferential side. A plurality of vertical ribs 18 are formed in the transmitting portion 13a shown in FIG. 3, and a vertical groove 16' is formed between these ribs 718. Cono, end 16'a of vertical groove 16', 16
′b does not have a frontage on the circumferential side surface 13b of the transmitting part 13, but if the upper surface of the rib 18 is regarded as the transmitting surface 13a, the ends 16'a and 16'b are on the circumferential side surface 13b. 13M: It can be said that it is open. In Figure 4, the n through hole 15 is made into a vertically elongated hole.
In addition, a vertical groove 16' is formed along the longitudinal direction of the elongated hole, and in FIG. It is something.

〔Effect of the invention〕

As described above, the handset according to the present invention has a simple structure and can maintain a conversation even when the cheek or chin of the caller comes into close contact with the speaking surface.

[Brief explanation of drawings]

FIG. 1 is a front view and partially sectional side view showing one embodiment of the handset according to the present invention, and FIGS. 2 to 5 are front views showing main parts of other embodiments of the handset according to the present invention. FIG. 6 is a side view and a front view of a conventional handset that has been generally used, and FIG. 7 is a diagram showing one mode of use of the handset. DESCRIPTION OF SYMBOLS 11... Case, 12... Receiving part, 12a... Receiving surface, 13... Transmitting part, 13a... Transmitting surface, 13b
... Circumferential side, 15 ... Sound hole, 16 ... Groove, 16
a, 16b... end, A... imaginary line. Figure 1 Figure 2 Figure 4 Figure 10 (Q) (b) Figure 6

Claims (2)

[Claims] (1) In a handset in which a transmitting section is disposed at one end and a receiving section is disposed at the other end, an end portion is provided on the transmitting surface of the transmitting section, extending in at least two directions from the sound hole, and on the peripheral side of the transmitting section. A handset characterized by forming a groove with an opening. (2) The handset according to claim 1, wherein the groove is formed parallel to an imaginary line connecting the center of the speaking surface of the transmitting section and the center of the receiving surface of the receiving section. .