JPH04607Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an acoustic coupler that mutually converts acoustic signals and electrical signals.

[Prior art]

Telephone transmitter/attached to the handset, transmitter/
Acoustic couplers are widely used for converting acoustic signals from a receiver into electrical signals, and converting electrical signals into acoustic signals and inputting the signals to a transmitter/receiver. Such an acoustic coupler is used, for example, in a portable facsimile machine.

The conventional device will be described below with reference to FIG. 4 of the accompanying drawings. In addition, in the description of the drawings, the same elements are given the same reference numerals.

FIG. 4 is a sectional view of an example of a conventional device, showing a receiving portion. A receiver 1 for receiving an acoustic signal from a telephone and converting it into an electric signal is held in a coupler cover 2 made of an elastic material, and a ring-shaped groove is formed on the back side of the coupler cover 2. has been done. One end of a cylindrical holding member 3 is inserted into this groove, and the other end of the holding member 3 is attached to the coupler plate 5 with a stopper 4.

The transmitting section is constructed in substantially the same manner as the receiving section, and a single acoustic coupler is constructed by including one transmitting section and one receiving section. Note that a signal line (not shown) is connected to the receiver 1 and the transmitter (not shown) on the transmitting side in FIG.
Electric signals are sent through this signal line.

By the way, the above-described holding member 3 is made of a hard material such as resin, and therefore mechanical vibrations associated with the acoustic signal are easily transmitted between the receiver 1, the transmitter, and the coupler plate 5. As a result, there have been disadvantages in that acoustic signals from the telephone cannot be properly received, and erroneous signals are sent to the other party via the telephone. And this drawback is
This is especially noticeable when the tip of the holding member 3 is close to the receiver 1 or the like.

[Purpose of invention]

The present invention was devised to overcome the drawbacks of the conventional devices as described above, and provides an acoustic coupler with a structure in which mechanical vibrations are not transmitted between the receiver and transmitter and the coupler plate. .

[Summary of the idea]

In order to achieve the above object, the present invention provides a coupler cover in which each coupler cover is made of an elastic material that is difficult to transmit mechanical vibrations, and includes a holding part that holds a receiver and a transmitter, and a holding part that holds a receiver and a transmitter. The outer shell is integrally formed with the holding part on the input/output side of the acoustic signal, and is attached to the coupler plate on the opposite side of the input/output side of the acoustic signal. , at least one of the coupler covers is attached to the coupler plate so as to be movable in the longitudinal direction thereof, and a belt is provided for tightly mounting a telephone transmitter/receiver on each of the corresponding coupler covers. The present invention provides an acoustic coupler characterized in that it is provided on the coupler plate.

[Example of idea]

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 3 of the accompanying drawings. FIG. 1 is a cross-sectional view of the receiving part of the same embodiment, FIG. 2 is a plan view of the acoustic coupler according to the same embodiment, and FIG.
FIG. 2 is a cross-sectional view of the entire acoustic coupler shown in the figure.

The receiver 1 is attached to a coupler cover 2 made of an elastic material such as rubber. The coupler cover 2 has an inner holding part 2a and an outer shell part 2b.
It is made up of. The holding part 2a holds the receiver 1 therein, and its surface on the audio signal input/output side, that is, the top surface, is integrally molded with the outer shell part 2b. A protrusion 2c is integrally molded on the opposite surface of the outer shell 2b facing the acoustic signal input/output side, that is, the lower surface, and the protrusion 2c is penetrated into a hole (not shown) provided in the coupler plate 5. There is. And between the holding part 2a and the outer shell part 2b,
A cavity with an appropriate width is formed.

The coupler cover 2' on the transmitting side, to which the transmitter 1' for transmitting acoustic signals is attached, has a similar structure to that on the receiving side. Further, a belt 6 is attached to the middle portion of the coupler plate 5, so that the coupler plate 5 can be attached to a transmitter/receiver of a telephone.

The coupler cover is difficult to transmit mechanical vibration,
Made of elastic material that has good adhesion when attached to the transmitter/receiver of the telephone. Further, in the above embodiment, the cross-sectional shape of the outer shell portion is rectangular, but it is not limited to this, and may have a rounded shape, for example.

To attach the coupler cover and the coupler plate, as described above, the projection 2c integrally formed on the lower surface of the outer shell (the side opposite to the input/output side) is inserted into the hole (not shown) provided in the coupler cover. By forming this hole, for example in the form of a slot, at least one coupler cover can be mounted movably in the longitudinal direction of the coupler plate. With this arrangement, the position of the two coupler covers relative to the telephone handset can be adjusted depending on the length of the telephone handset. In addition, when the transmitter/receiver is brought into close contact with each coupler cover using a belt, the tightening force of the belt acts on the coupler cover with the coupler cover sandwiched between the rigid coupler plate and the telephone.
Since this coupler cover will be bent,
The coupler cover can be securely held in close contact between the rigid coupler cover and the telephone set without moving the coupler cover and shifting the positioned position, and without having to tighten the coupler cover too tightly. Furthermore, the planar shape of the coupler cover is not limited to that shown in the drawings, and may be circular or the like. Moreover, the coupler cover may be made into an integral structure as shown in the drawings, and the hollow portion may be provided only for transmitting or receiving, or for both.

[Effect of idea]

As explained above, according to the present invention, the following various effects are achieved.

It has a holding part that holds the receiver and the transmitter, and an outer shell part that surrounds the holding part,
This outer shell part is integrally molded with the holding part on the input/output side of the acoustic signal, and is attached to the coupler plate on the opposite side of the input/output side of the acoustic signal. The vibrations from the base on which the acoustic coupler is placed are transmitted from the bottom (protrusion) of the outer shell, through the side wall of the outer shell, and through the top wall of this outer shell. Therefore, the transmission distance of the vibration is long even if the coupler cover is made small, so that it is possible to make it more difficult to transmit the vibration to the receiver or transmitter.

Since the outer shell is made of a material that is difficult to transmit vibrations, almost no vibrations are transmitted to the receiver or transmitter fixed to the holding part. It is possible to make it difficult for vibrations to be transmitted to the holding part holding the receiver or transmitter.

The coupler plate is provided with a belt for tightly attaching the transmitter/handset of the telephone to each of the corresponding coupler covers, so that the telephone transmitter/handset is attached to each of the corresponding coupler covers of the acoustic coupler. When attached to the cover, the belt wraps around the acoustic coupler and firmly fixes it to the acoustic coupler.Furthermore, the coupler cover is flexible, allowing the telephone to make and receive calls.
Since the receiver and the coupler cover of the acoustic coupler are attached in close contact with each other, it is possible to prevent noise from entering through the joint between the transmitter/receiver of the telephone and the coupler cover of the acoustic coupler.

At least one of the two coupler covers is movable in the longitudinal direction of the coupler plate, so that the position of the two coupler covers can be adjusted relative to the transmitter/receiver of the telephone depending on the length of the telephone handset; At this time, since the coupler cover is made of an elastic material and has flexibility, the coupler cover can be bent in the direction of movement. When the coupler cover is pressed against the receiver, the deflection of the coupler cover allows the coupler cover to absorb the misalignment of the transmitter/receiver. The transmitter/receiver and the coupler cover can be brought into close contact with each other.

If the coupler cover is not flexible and you try to compensate for its misalignment, you will have to tighten the belt quite tightly, which will put stress on various parts and cause a high degree of fatigue. Become. In this regard, according to the present invention, since the coupler cover is flexible, the coupler cover and the handset can be reliably brought into close contact without tightening the belt very tightly.

Since the degree of deflection of the coupler cover can be adjusted by adjusting the tightness of the belt, it is also possible to create a better bonding state between the transmitter/receiver and the coupler cover.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the main parts of an embodiment of the present invention, Fig. 2 is a plan view of the same embodiment, and Fig. 3 is a sectional view thereof.
FIG. 4 is a sectional view of essential parts of an example of a conventional device. 1...Receiver, 1'...Transmitter, 2,
2'...Coupler cover, 2a, 2a'...Holding part,
2b, 2b'...Outer shell part, 5...Coupler plate.

Claims (1)

[Claims for Utility Model Registration] A receiver for receiving an acoustic signal and a transmitter for transmitting an acoustic signal are fixed to respective coupler covers for reception and transmission, and the coupler covers are attached to one end and the other end of the coupler plate, respectively. In the acoustic coupler attached to a an outer shell part, the outer shell part is integrally formed with the holding part on the input/output side of the acoustic signal, and is attached to the coupler plate on the opposite side of the input/output side of the acoustic signal. , at least one of the coupler covers is attached to the coupler plate so as to be movable in the longitudinal direction thereof, and a belt for tightly attaching a transmitter/receiver of a telephone to each of the corresponding coupler covers; is provided on the coupler plate.