JPS58220552A - Acoustic coupler - Google Patents

Abstract

PURPOSE:To install various transmitter-receivers whose arm length are different from each other, by providing a flexible connecting part between the first and the second coupler cases having a receiver receiving part and a transmitter receiving part, respectively. CONSTITUTION:In case when a transmitter and a receiver of a transmitter-receiver having a longer arm than a transmitter-receiver 2 are installed to a transmitter receiving part 4 and a receiver receiving part 7, respectively, an inside cylinder 12 is drawn out in the axial direction from the inside of an outside cylinder 13 and it is used, and in case when it has a shorter arm than the transmitter-receiver 2, it is used by sliding the inside cylinder 12 so as to be contained into the outside cylinder 13. That is to say, it is used by expanding and contracting a connecting part 19 in accordance with length of the arm of the transmitter-receiver, and setting an interval between the first coupler case 1 and the second coupler case 2 to suitable length so that a transmitter 2a and a receiver 2b of the transmitter-receiver 2 are installed to the transmitter receiving part 4 and the receiver receiving part 7, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an acoustic coupler for acoustic coupling through a telephone handset in data communication equipment.

In general, this type of acoustic coupler is provided with a handset receiver corresponding to the handset of a telephone set and a transmitter receiver with a predetermined distance of -1). A microphone is provided on one side of the receiver for the handset, and a speaker is provided on the side of the other receiver for the handset. The device is configured so that audio signals can be transmitted and received by

However, due to variations in telephone numbers or manufacturing tolerances, the lengths of the arms between the handset and handset are different, making it difficult to attach the handset to the handset receiver. This can be difficult.

Furthermore, even if it can be installed, the coupling between them is often insufficient, resulting in the inconvenience that external fiber noise is mixed in during signal transmission, degrading the transmission quality.

The present invention has been developed in view of the above circumstances, and includes a first receiver having a receiving part for a handset and a receiving part for a transmitter. Second
The present invention provides a phone cover that allows attachment of various handsets with different arm lengths by an extremely simple structure in which a telescopic connecting portion is provided between the cover cases. Hereinafter, the configuration and the like will be explained in detail with reference to embodiments shown in the drawings.

1 and 2 show an embodiment of the acoustic coupler according to the present invention; FIG. 3 is a perspective view of the acoustic coupler in the extended and linear states, respectively; FIG. is also a cross-sectional view showing the main parts of the acoustic coupler,
Fig. 5 is a sectional view taken along the line ■-■ in Fig. 4, and in these figures, the reference numeral 1 is the first coupler case that holds the transmitter 2a of the telephone handset 2, and there are no parts shown inside. A support stand 3 is integrally provided in the upper part with an opening at the upper end and an inclination downward to the left.

A transmitter receiver 4 corresponding to the transmitter 2a is fixed to the upper part of the support base 3. The transmitter receiving portion 4 is integrally formed of a flexible material such as rubber, and has a cup-shaped recess M4a on its upper surface having a size that allows the transmitter 2& to be airtightly fitted therein. There is. 5 is the receiver...
The second ~11 Kabra case that holds 7,,b has a built-in microphone (not shown),
A support stand 6 is integrally provided in the upper part with an opening at the upper end and an inclination downward to the right. A receiver 1 for a receiver 1 corresponding to the receiver 2b is fixed to the upper part of the support base 6. This handset receiver 7#i is integrally formed of a flexible material like the transmitter receiver 4, and has a cup-shaped recess on its upper surface having a large length into which the handset 2b can be airtightly fitted. 7a is provided. 8. Storing the connecting parts □
side plate 11L of the first cover case 1.
It has an opening 8a at the side thereof, and is provided in the first coupler case 1 to be long in the lateral direction. This storage tube 8 has an engaging portion 9 near the opening 8a, and a pair of vertical grooves 10 facing each other and having a groove length approximately equal to the length of the tube is provided on the inner circumferential surface. 11 A connecting part provided between the first cover case 1 and the second cover case 5, where the inner cylinder 12 and the outer cylinder 13 having different inner diameters are coaxially connected, and the inner cylinder 12 is connected inside the outer cylinder 13. It is configured to be extendable and retractable by being slidably provided on the holder. One end of the inner cylinder 12 is fixed to the second coupler case 5 side, and a locking means (not shown) is provided at the other end to prevent insertion and removal from the outer cylinder 13. The outer cylinder 13 is provided at one end with a pair of protrusions 14 in the outer radial direction corresponding to the longitudinal grooves 10 of the storage cylinder 8. By sliding the protrusions 14 in the longitudinal grooves 10, It is configured to be able to move forward and backward within the storage tube 8.

Therefore, the transmitter and receiver of a handset having arms longer than the handset 2 shown in FIG. When installing the handset receiver IK, pull out the inner cylinder 12 from the outer cylinder 13 in the axial direction, and if the arm is shorter than the handset 2, slide the inner cylinder 12f so that it is stored in the outer cylinder 13. Move and use. That is, the connecting portion 11 is expanded and contracted according to the length of the arm of the handset, so that the transmitter 2m and the receiver 2b of the handset 2 are connected to the transmitter receiver 4. The distance between the first turnip case 1 and the second turnip case 5 is set to an appropriate length so that the first turnip case 1 and the second turnip case 5 are attached to the receiver part 7 for the handset.

Note that the connecting portion 11 of the acoustic coupler according to the present invention has an inner ft1
12 and the outer cylinder 13 are slid into the outer cylinder 13 and into the storage cylinder 8, respectively. It can be combined.

Furthermore, the connecting portion 11 according to this embodiment has a circular inner and outer ft
Although the present invention is not limited to this, as shown in FIG. The part 11 is a rectangular inner cylinder 18. It may be constructed from the outer cylinder 19. That is, in short, any telescopic connecting portion provided between the first cover case and the second cover case may be used.

As explained above, according to the present invention, the first case 2 has a receiver for a receiver, and the second case has a receiver for a receiver.
Since the coupler cases are equipped with a telescopic connecting part between the coupler cases, the distance between the couplers can be adjusted as appropriate, and even if the handset and receiver have different arm lengths, it is possible to make a call. The receiver and receiver can be reliably attached to the receiver for the transmitter and the receiver for the handset, respectively. therefore,
Unlike in the past, external noise does not mix in due to insufficient attachment of the handset, so voice signals can be transmitted without deteriorating transmission quality. Moreover, if the connecting portion is housed in the storage tube, the first cover case and the second cover case can be connected, and the device itself can be made smaller. Therefore, it is easy to pack and transport, and its practical effects are extremely large.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the acoustic coupler according to the present invention; FIG. 3 is a perspective view of the acoustic coupler in the extended and linear states, respectively; FIG. 5 is a cross-sectional view showing the main parts of the acoustic coupler, FIG. 5 is a cross-sectional view taken along the line -■ in FIG. 4, and FIG. 6 is a perspective view showing another embodiment of the acoustic coupler. 1. Fist: First Kabra case, 2. Handset,
2a@*...Telephone, 2bs...Telephone receiver, 4...
Hanging part for transmitter, 5...Second turnip 2 case, T...
...Receiver part for receiver, 11, fist, connection part. Patent applicant Masaki Yamakawa (# moving name) Tamura Oki Seisakusho Co., Ltd. Agent

Claims (1)

[Claims] In an acoustic coupler that has a transmitter receiver and a receiver receiver that fit and hold a transmitter and a receiver, respectively, and performs signal transmission and reception by acoustically coupling the receiver and transmitter, the receiver a first coupler case including a speaker, and a second coupler case including a microphone and a receiver.
What is claimed is: 1. An acoustic coupler comprising: a coupler case, and a retractable connecting portion provided between the coupler cases.