JPS5843307Y2 - Mounting structure of fault display board in public telephone - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mounting structure for a fault display board in a public telephone.

Conventionally, public telephones have been known to have a movable failure display board inside the phone housing, which can be placed over the display window to display the status in the event of a malfunction. .

However, in the conventional fault display board mounting structure, as shown in FIG.
Because it had an extremely simple structure in which the nuts 5 were screwed together, a slight loosening of the nut 5 caused the screw body 2, in other words, the failure display plate 1, to fall along the elongated hole 4, making it impossible to make normal calls. Even if there was, there was an inconvenience that it would be incorrectly displayed as being out of order.

Additionally, some devices are known in which the words "out of order" are printed on the back side of an explanation board provided on the phone case, and the explanation board can be turned over when waiting for a breakdown. However, the fixing screws had to be completely removed each time, making it troublesome to turn the device over and making the structure complicated.

The present invention was developed to solve the above-mentioned problems, and its purpose is to provide an extremely simple structure in which a boss is provided on the operating nut and the boss is fitted into the retaining hole of the guide plate. Accordingly, it is an object of the present invention to provide a mounting structure for a fault display board in a public telephone that can prevent the fault display board from falling due to loosening of an operating nut.

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.

FIG. 2 is a front view of the telephone housing, FIG. 3 is an exploded perspective view showing the mounting structure of the failure display plate, and FIG. 4 is a longitudinal sectional view.

In these figures, reference numeral 10 indicates a housing of a public telephone, and a cover 11 is attached to the front surface of the housing 10 so as to be openable and closable, and is normally locked.

The cover 11 is provided with a coin slot 12, a push button dial 13, and a coin return slot 14, and a display window 15 is also provided. An explanatory board 16 is attached for this purpose.

At the top of the display window section 15, a coin insertion button and display lamps 17, 18 for indicating a malfunction of internal equipment are provided, and a remaining amount display mechanism 19 is also provided.

Reference numeral 20 denotes a failure display board for indicating malfunctions of the telephone, and the words "under repair" are printed on its surface.

This fault display board 20 is fixedly held on the back surface above the display window 15 of the cover 11 during normal times when a call is possible, and when a fault occurs, it falls and moves to the top of the display window 15, that is, the lamps 17, 18i- and A guide plate 21 is attached to the guide plate 21 so as to be able to move up and down to cover the remaining amount display mechanism 19.

The guide plate 21 is erected behind the failure display board 20 and has a button.
An engagement hole 23 having an inner diameter larger than the groove recess 2 is bored.

On the other hand, the guide plate 21 is attached to the failure display board 20.
A substantially elliptical mounting hole 24 is bored corresponding to the elongated hole 22, and a screw body 25 which also serves as a support shaft is inserted into this mounting hole 24.

An engaging protrusion 26 is integrally provided at the base of the screw body 25, and by fitting and securing the engaging protrusion 26 into the mounting hole 24, the screw body 25 is prevented from rotating.

In this case, the screw body 25 may be fixed to the failure display plate 20 by caulking or adhesive.

The tip of the screw body 25 passes through the elongated hole 22 and protrudes to the rear of the guide plate 21, and a display panel operating nut 28 having a boss portion 29 is screwed onto this protruding end.

The outer diameter of the boss portion 29 is formed to be slightly smaller than the inner diameter of the engagement hole 23 of the guide plate 21 so that the boss portion 29 can be fitted into and engaged with the engagement hole 23 of the guide plate 21.

Note that 30 is a spacer that is attached to the screw body 25 and interposed between the failure display plate 20 and the guide plate 210, and 31 is a transparent cover made of acrylic or the like that is attached to the front window 15.

With this configuration, the operating nut 28 is normally closed.
The boss portion 29 may be inserted into the engagement hole 23 of the guide plate 21 by tightening the screws.

As a result, the operating nut 28 is fixed to the guide plate 21, so that the failure display plate 20 is fixedly held on the back surface above the display window 15 of the cover 11, as shown in FIG.

In this case, even if the operating nut 28 becomes slightly loosened due to vibration or the like, the failure indicator plate 20 will be held in that position and will not fall as long as the boss portion 29 does not come out of the engagement hole 23.

On the other hand, if the telephone malfunctions, open the cover 11, loosen the operating nut 28, and insert the boss 29 into the guide plate 2.
1, the failure display plate 20 becomes free with respect to the guide plate 21, so that the screw body 25 is guided by the elongated hole 22 and falls.

Therefore, as shown in FIG. 5, the failure display board 20 displays the failure while facing the upper part of the display window 15 and covering the lamps 17, 18 and the remaining amount display mechanism 19.

As explained above, according to the mounting structure of the fault display board in a public telephone according to the present invention, the operating nut is provided with a boss portion, and the engagement hole communicates the boss portion with the elongated hole drilled in the guide plate. Since the malfunction display plate is fitted and engaged with the malfunction display plate, the malfunction display plate can be securely fixed, and even if the operating nut becomes slightly loosened, the malfunction display plate will not fall.

Additionally, when a failure is indicated, the operation nut can be loosened by the length of the boss, making it easy to operate, and its practical effects are very impressive.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an example of a conventional fault display board mounting structure, Fig. 2 is a front view of a telephone casing showing an embodiment of the present invention, and Fig. 3 is an installation of a fault display board according to the present invention. FIG. 4 is a longitudinal sectional view, and FIG. 5 is a longitudinal sectional view of a failure display section. DESCRIPTION OF SYMBOLS 10... Telephone housing, 15... Display window section, 20... Malfunction display board, 21... Guide plate, 22...... Long hole 23...
・Engagement hole, 25...Screw body, 28...
Nut for display panel operation, 29...Boss part.

Claims (1)

[Scope of utility model registration request] In a public telephone that, when a failure occurs, a failure display board faces the display window to notify the user of the condition, the screw body provided on the failure display board and serving as a support shaft is screwed into the screw body. a guide plate having an engagement dead weight with which a boss provided on the operation nut engages, and an elongated hole that communicates with the engagement hole and through which the screw body is pushed. The malfunction display plate is fixed at a non-display position by tightening the operating nut and fitting the boss portion into the engagement hole of the kite plate during normal times, 1. A structure for mounting a trouble display board in a public telephone, characterized in that when a nut is loosened to release the engagement between the boss part and the engagement hole, the failure display board falls down and faces the display window part.