JPS6322755Y2 - - Google Patents

Description

[Detailed explanation of the idea] This invention relates to public telephones.

Although the precision equipment inside public telephones is protected by a sturdy case, the dial section, for example, has a mounting hole for attaching the dial device, so it is structurally weaker than other parts. I was getting used to it. Therefore, when a public telephone is destroyed, there are many dial parts, and if the dial device is destroyed and removed from the mounting hole, there is a risk that the precision equipment inside the housing will be easily destroyed.

This invention was developed in view of the above points, and the purpose of this invention is to provide the return funnel on the back side of the dial device so as to cover it, so that even if the dial device is destroyed, the casing remains intact. The objective is to provide a public telephone that can protect the internal equipment of the telephone.

This invention will be explained below with reference to an illustrated embodiment.

T in the figure is a public telephone, and a door A is provided on the front of the casing K of this telephone T so that it can be opened and closed freely.
Inlet ports 1 and 2 are arranged in parallel, and a rotary dial device 3 is fitted in a mounting hole 3b at a lower position of these inlet ports 1 and 2. A return opening 4 for coins C is formed at the lower part of the coin C.

The mechanism portion 3a of the dial device 3 is projected toward the back side of the door A, and this mechanism portion 3a is covered by a return funnel 5, which will be described below.

The return funnel 5 includes a mounting surface 6 that acts as an internal protection plate, and a raceway surface 7 formed opposite to the mounting surface 6a at a predetermined distance D from the middle part to the lower end of the mounting surface 6. It is formed by raceway side surfaces 8 and 9 located between the mounting surface 6 and the raceway surface 7. The upper end 6a of the mounting surface 6 is bent and its tip is fixed to the back of the door A, and a bolt insertion hole 6b is provided slightly above the middle of the mounting surface 6. The intermediate portion is fixed to a mounting plate 10 protruding from the inner surface of the door A with bolts. Furthermore, a locking pawl 6d is provided at the lower part 6c of the mounting surface 6, and the locking pawl 6d is locked to a locking plate 11 which is protruded from the back surface of the door A. Note that the lower portion 6c and the lower end of the raceway surface 7 are inclined toward the door A side. Thus, a storage space P is formed between the mounting surface 6 of the return funnel 5 and the door A, and the mechanism section 3a of the dial device 3 is stored in this storage space P, and the mounting surface 6 is located at the back of the mounting hole 3b. On the other hand, a space surrounded by the mounting surface 6, the raceway surface 7, and the raceway side surfaces 8 and 9 is a discharge passage 12 for defective coins inserted from the input ports 1 and 2.
The discharge passage 12 has a rectangular cross section, and the gap W between the track side surfaces 8 and 9, which are the openings, is at least larger than the gap S between the input ports 1 and 2. , 9 are each inclined inward, so that the distance W between the discharge passages 12 becomes gradually narrower as the discharge passage 12 moves downward. Also, the distance D between the discharge passages 12
is at least larger than the diameter of coins that can be inserted into the slots 1 and 2.

Next, the box-shaped return passage 13 provided at the lower part of the return funnel 5 will be explained. The upper and lower end surfaces of this return passage 13 are opened, and the opening 13a is connected to the discharge passage 12, and the lower end opening 13 is opened.
c are each connected to a coin return box 15, which will be described later. A side plate 13b of the return passage 13 is located on the downward extension of the raceway surface 7 forming the discharge passage 12,
Coin return slits 14, 14 are formed in the side plate 13b along the vertical direction of the telephone T at predetermined intervals. The return slits 14, 14 each correspond to a coin return plate 23 provided on a coin accumulation track 22, which will be described later. The length of the return grooves 14, 14 is greater than the diameter of the coin C, and the width of the groove is greater than the thickness of the coin C.

Next, the box-shaped coin return box 15 provided at the lower part of the return path 13 will be explained. The return port 4 is provided with a lid 16 so as to cover the return port 4. The top end of the lid 16 is pivotally supported by a pivot 16a, and the bottom end is on the back side of the telephone T. It is said to be able to rotate freely. In addition, the lid body 16
A pushing plate 17 for pushing the lid 16 forward is provided on the back side of the telephone T. The pushing plate 17 has an upper end pivoted by a pivot 17a, and a lower end that is attached to the telephone T. It is said to be able to rotate freely in the front and rear directions.
A spring 18 is provided between the intermediate portion of the push plate 17 and the pivot 16a, and the spring 18 pushes the lower end of the push plate 17 against the back surface of the lid 16. It is in contact with the lid 16 in this state.

On the other hand, a partition plate 15a forming the coin return box 15
is located on the downward extension of the side plate 13b of the return passageway 13 and is opposed to the return port 4, and the upper part of the partition plate 15a is provided with a member for suppressing the opening operation of the pusher plate 17. A contact protrusion 19 is formed.

Incidentally, in the interior space of the casing K of the telephone T, coin track plates 20, 20 are provided in series with each of the slots 1, 2, and are erected in parallel in the front-rear direction of the telephone T. These coin raceway plates 2
The upper part of 0 and 20 is used as a coin sorting track 21, and the part from the middle part to the lower part is used as a coin accumulation track 22. The sorting track 21 is located above the return funnel 5, and the accumulation track 22 is located above the return funnel 5.
is located on the back side of the discharge passage 12 of the return funnel 5, and the lower end of the storage track 22 is held at a position close to the return slits 14, 14. Further, a coin return plate 23 is held at the lower end of the accumulation track 22 in close proximity to a position opposite to the return slit 14, and a stopper 24 for accumulating coins is provided at a lower position of the coin return plate 23. ing.

The operation of the public telephone T with the above configuration will be explained.

When a coin C is inserted into the slots 1 and 2 with the handset of the telephone T removed, the coin C passes through the sorting track 21 under its own weight, and if it is an appropriate coin, it is transferred to the next storage track 22. Invade and accumulate this trajectory 2
2, the proper coins C are piled up in a vertical line in the accumulation track 22 by the stopper 24. When the dialing device is operated and a call is started, the stoppers 24 are successively opened and coins C corresponding to the call charge are dropped into the charge box 26. Furthermore, at the same time as the call ends and the receiver is hung up, the coin return plate 23 is opened, and the coins C remaining in the accumulation track are transferred to the return slit 14.
The coins are then dropped into a coin return box 15 via a return passage 13. The lid 16 attached to the coin return box 15 has the push plate 17, so when the lid 16 is pushed open, the push plate 1
7 will completely close the return passage 13,
There is no risk of foreign objects being inserted into the telephone through the return port 4.

Further, in the coin return box 15 as described above, even if the coin return box 15 is made larger, the return passage 13 can be closed by the push plate 17.

On the other hand, when a defective coin with a smaller diameter than the above-mentioned proper coin C is inserted into the input ports 1 and 2, the defective coin deviates from the sorting track 21 and falls from the same sorting track 21 to the discharge path of the return funnel 5. Entering 12,
Then, it is returned to the coin return box 15 through the return path 13 in the same manner as the above-mentioned proper coin C.

As mentioned above, a part of the return funnel 5 covers the back side of the dial device, and a part of the return funnel 5 is used as an internal protection plate, so the dial part is Structurally reinforced, the dial device 3 is destroyed and the mounting hole 3b
Even if it is removed from the housing K, the precision device inside the casing K is protected by the return funnel 5, and cannot be destroyed through the mounting hole 3b.

In the above embodiment, a rotary dial device is used, but a push-button dial device may also be used.

As explained above, according to this invention, a return funnel is provided on the back side of a device such as a dial or a pushbutton display provided on the door of a telephone, and a part of this return funnel is used for each of the above-mentioned devices. By covering the back side, even if devices such as dials are removed, the precision equipment inside the housing is protected from the outside by the return funnel, and the maintainability of the public telephone can be significantly improved. effective.

[Brief explanation of drawings]

Figure 1a is a perspective view of the public telephone according to this invention, Figure 1b is a perspective view of the public telephone with the door open, and Figure 2 is a perspective view of the public telephone installed in the public telephone. FIG. 3 is a longitudinal cross-sectional view showing the return funnel and its vicinity, and is a cross-sectional view showing the return funnel of the public telephone in an open state. 1, 2... Input port, 3... Dial device, 4...
...Return port, 5...Return funnel, 12...Discharge passage, 13...Return passage, 14...Return slit,
15... Coin return box, 16... Lid body, 20... Coin track plate, 21... Coin sorting track, 22... Coin accumulation track.

Claims (1)

[Claims for Utility Model Registration] A door A is provided on the front of the casing K so that it can be opened and closed freely, and the mounting hole 3b formed in the door A has a
In a public telephone set in which a device 3 such as a dial, a pushbutton display, etc. is fitted, a fixed device is installed on the back of the door A at a position covering the protrusion of the device 3 on the back of the door A. A mounting surface 6 that forms the front plate portion of the return funnel 5 that guides the returned coins to the return port 4 is fixedly installed through the mounting plate 10 that is attached to the mounting plate 10. A public phone characterized by having a configuration with an internal protection plate.