JPS6051296B2 - Dial attachment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a dial attachment device for enabling a rotary dial telephone to be used in the same manner as a push button dial.

Conventionally, this type of dial attachment device has been designed to mechanically rotate a rotary dial by driving a motor etc. by operating a push button, thereby sending out dial pulses, or so-called There are devices such as automatic dialing devices that are installed independently of a telephone set and transmit dial pulses by operating the push button dial of this device.

However, these conventional devices have disadvantages such as being expensive due to their complicated and large mechanisms, not being easy to install or remove, and requiring a large installation area. The present invention has been made in view of the above circumstances, and its purpose is to provide a telephone that can be easily attached and detached without any modification to the telephone, has a simple configuration, is inexpensive, and has excellent operability. To provide dial attachment equipment.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a top view showing a state in which the dial attachment device according to the same embodiment is attached to a telephone set. As is clear from the figure, the rotary dial (shown in the figure) of the telephone 2 is attached to the dial attachment device main body 1, which houses a push button switch and its illumination lamp in the housing, while the dial attachment device main body 1 has a rotary dial (not shown) attached thereto. A power unit 3 containing a power supply circuit and a dial pulse generation circuit housed in a J-casing is adapted to be attached to one rear portion of the telephone 2. Further, the lighting control switch 4 for the illumination lamp is arranged between the hook switches 5, so that it is like a gate that is turned on and off in conjunction with the hook operation of the handset 6. In addition, these dials are attached to the attached device main body 1 and the lighting control switch 4.
and the power unit 3 are connected by a flexible terminal wire cord 7. In addition, 8 is power unit 3
The connection code derived from 9 indicates the code of the telephone 2, respectively. Now, the dial attachment device main body 1 is constructed as follows.

FIG. 2 is an exploded perspective view showing the structure of the accessory device main body 1, and FIG. 3 is a sectional view showing the overall structure. In FIG. 2, the housing 11 is a shallow cylindrical body whose upper end is closed by a top plate, and the top plate is provided with a plurality of push button accommodation holes 12, 12. The number of push button housing holes 12, 12 to be installed is equal to the number of dial numbers plus those for speed dials and for main switches of illumination lamps. Also,
A plurality of mounting portions 1 are provided at regular intervals on the side wall surface of the housing 11.
3 and 13 are provided. These fittings 13, 13
These fixtures 13, 13 have claws 14 protruding from the lower ends of their inner peripheral surfaces. These claws 14 are for hooking onto the lower side of the rotary dial when attaching the dial attachment device main body 1 to the rotary dial. On the other hand, flexible substrate 1
5 is two annular substrates 15 whose one ends are connected to each other.
a and the disk-shaped substrate 15b are bent at one end and overlapped with each other, and each of these substrates 1
A spacer 16 is interposed between 5a and 15b. The annular substrate 15a and the disc-shaped substrate 15b each have a plurality of electrode pairs 17, 18 facing each other.
is formed. These electrode pairs 17 and 18 are positioned to correspond to the installation positions of the push button accommodation holes 12 and 12 of the housing 11. The structure is such that when the electrodes 17 and 18 come into contact with each other, a signal (for example, voltage) is sent back to the terminal wire 19. Further, the spacer 16 is also provided with through holes 16a, 16a corresponding to the installation positions of the push button accommodating holes 12, 12. In addition, Fig. 20th grade
The board shown in FIG. 2 and the fixing ring 21 shown in 21 are for reinforcing the flexible board 15 and fixing it within the casing 11, respectively. When assembling such a dial attachment device body 1, first insert the housing 11 into each push button accommodation hole 12, 12 of the housing 11 as shown in FIG.
Insert the push buttons 22, 22 from inside, then accommodate the flexible board 15, press the board 20 against the lower surface of the flexible board 15, and then fit the fixing ring 21 to the inner peripheral surface of the housing 11. to finish the assembly.

Here, an illumination lamp 23 is connected to the flexible substrate 15 in advance before it is housed in the housing 11, and the position is adjusted so that the light emitted from the illumination lamp 23 illuminates each push button 22 when the flexible substrate 15 is housed. do. In addition,
The push button 22 is made of a translucent material. On the other hand, the terminal wire cord 7 that is connected to the terminal wire 19 of the flexible substrate 15 is pulled out from the hole 11a provided in the side surface of the housing 11. To attach the dial attachment device main body 1 to the telephone 2, hook the claw 14 at one end of the housing 11 onto the lower side of the rotary dial 2a, and then attach the dial attachment device main body 1 to the other end of the housing 11. The provided screw hole 11b is aligned so as to face the stopper 31, and then the screw 24 is screwed into the screw hole 11b and tightened to the finger stopper 31 to complete the installation. On the other hand, the power unit 3 and the lighting control switch 4 are respectively attached to the telephone set 2 as follows. FIG. 4 is a sectional view showing the attachment structure thereof.

In the figure, the power unit 3 has an introduction hole 32 for the terminal wire cord 7 on the top surface, an outlet hole 33 for the connection cord 8 on the lower front surface, and a screw 34 on the rear side of the bottom surface.
The L-shaped metal fitting 35 is fixed by this. This L-shaped fitting 35 is for hooking onto the lower end of the casing 2b of the telephone 2 when the power unit 3 is attached to the telephone 2. Further, on the back side of the power unit 3, a first mounting bracket 36 whose middle part is bent into a dogleg shape is attached to the screw 3.
It is fixed by 7. The tip of the first mounting bracket 36 is bent into a U-shape, and a second mounting bracket 38 to which the lighting control switch 4 is attached is attached to the bent tip with a screw 39.
It's stopped. At this time, the bending dimensions of the first mounting bracket 36 and the shape of the second mounting bracket 38 are such that when the power unit 3 is attached to the back of the telephone 2, the second mounting bracket 38 is attached to the casing of the telephone 2. Handle 2 provided on body 2b
It is designed to fit into c. Further, the lighting control switch 4 is attached to the second mounting bracket 38 so that its operating end protrudes above the mounting surface of the transmitter/receiver (not shown) in the state after the power unit 3 is attached. . Therefore, to install the power unit 3 and the lighting control switch 4, first, with the second mounting bracket 38 fixed to the power unit 3 via the first mounting bracket 36, approach the phone 2 from the back side and attach it to the handle 2c. Fit together.

Then, the power unit 3 is brought into contact with the casing 2b of the telephone 2, and in this state, the L-shaped fitting 35 is inserted into the lower end of the casing 2b, hooked, and fixed with the screw 34, so that the casing 2b is connected to the L-shaped fitting 35. 1 and the mounting fittings 36 to complete the installation. The circuit configuration of such a dial attachment device is as shown in FIG. That is, a constant voltage is always applied to the common contact 18a of each electrode 18 by the dial pulse generation circuit 40. This voltage is the voltage sent via the subscriber line to the tire pulse generating circuit 40.
The pressure is lowered to a predetermined value. On the other hand, the illumination lamps 23, 23 provided for each push button 22, 22 are connected in series, and these illumination lamps 23,
A driving voltage is supplied to 23 from a power supply circuit 42 via the lighting control switch 4 and the main switch 41, respectively, in series. Here, the main switch 41 is a lock type switch, and the subscriber manually dials the attached device main body 1.
It is now possible to insert illustrations. Note that 43 is a reference voltage (battery) of the power supply circuit. In such a configuration, when any push button 22 is inserted and the electrode 18 is closed, the above voltage appears at its output contact 18b, and this voltage is sent back to the tire pulse generating circuit 40.

The dial pulse generation circuit 40 detects the operating position of the push button 22 from the voltage return line using a decoder or the like, generates a line switch control signal from the dial pulse generator 40 according to the detection result, and uses this signal to switch the line switch. The switch is controlled on and off, thereby sending a dial pulse to the connection cord 8. Further, the storage section of the dial pulse generation circuit 40 stores in advance a speed dial number manually operated by the subscriber. When the speed dial push button is operated, the dial pulse generating circuit 40 reads the stored number from the storage section, generates a dial pulse corresponding to the number, and sends it to the connection code 8. On the other hand, when the main switch 41 of the lighting lamps 23, 23 is turned on in advance at night, etc., and the handset 6 is hooked on in this state, the lighting control switch 4 is turned on in conjunction with this hook-on operation, so the lighting control switch 4 is turned on. The driving voltage is supplied to the lamps 23, 23, and the lamps 23
, 23 lights up.

On the other hand, when the handset 6 is hooked on, the lighting control switch 4 is turned off, so the lighting lamp 2 is turned off.
The supply of drive current to the lamps 23, 23 is cut off, and the lamps 23, 2
3 turns off the light. In addition, when using in a bright place such as during the day, if the main switch 41 is turned off, the transmitter/receiver 6
Even if the hook operation is performed, the illumination lamps 23, 23 do not turn on. As described above, the dial attachment device of this embodiment has a very simple configuration, and the dial attachment device main body 1 is fitted into the rotary dial 2a while covering the rotary dial 2a, and the power unit 3 is attached to the telephone 2. It has the advantage that it can be installed very easily by just using the L-shaped metal fitting 35 on the back side, and that it can also be removed in the same way.

Furthermore, at that time, there is no need to modify the telephone 2 in any way, and the performance of the telephone 2 itself is not adversely affected. That is, by using the dial attachment device of this embodiment, even a rotary dial type telephone can be used as a push button type by simply installing it, thereby providing an inexpensive and highly operable telephone. I can do it. In addition, in the case of the dial attachment device of this embodiment, illumination lamps 23 and 2 are provided for each push button 22 and 23 on the dial attachment device main body 1.
3, it is possible to operate the dial reliably even at night or in a dark place without depending on the lighting in the room. This is especially useful when you want to make an emergency call at night or during a power outage. Furthermore, since the lighting of the lighting lamps 23, 23 is controlled by the main switch 41 and the lighting control switch 4 which is linked to the hook operation of the handset 6, transmission and reception are possible during the daytime when lighting is not required. The illumination lamps 23, 23 can be turned off regardless of the hook operation of the device 6, and unnecessary power consumption can be eliminated and the life of the battery can be extended. On the other hand, at night, etc., by simply leaving the main switch 41 in the on state, the lighting lamps 23, 23 are automatically activated in conjunction with the hook operation of the handset 6.
can be turned on and off. Note that the present invention is not limited to the above embodiments.

For example, the mounting structure of the dial attachment device main body 1 to the telephone 2 is such that an elastic member such as a gasket is attached to the lower end of the housing 11, and the rotary dial 2 is attached by using the elasticity of this elastic member.
It may be made to fit into a. Further, for attaching the power unit 3, a suction cup may be used instead of using the L-shaped fitting 35 or the like. In this way, the telephone 2 will not be damaged in any way. Further, the dial attachment device main body 1 may be constructed in a so-called touch type, in which the push buttons 22, 22 are pressed directly with a finger, and the illumination lamps 23, 23 are provided individually for each push button 22, 22. There is no need to provide a separate one, and a small number of lights may be used to illuminate the entire surface. Further, the power supply for driving the dial pulse generation circuit 40 and the power supply for driving the key switch are supplied from the power supply circuit 42 in addition to the voltage sent from the exchange via the subscriber line.
may be used. In addition, the configuration and shape of the dial attachment device main body 1, the arrangement of the key switches, the mounting structure of the power unit 3, etc. may be changed one by one without departing from the gist of the present invention. As described in detail above, the key switch is configured as a unit containing the dial attachment device body housed in the housing and the dial pulse generation circuit, and the attachment device body is rotated by the mounting part provided in the housing. According to the present invention, which is detachably attached to the dial and sends dial pulses from the unit to the subscriber line, the main body of the attached device can be made as small as possible, and it can be easily installed without making any modifications to the telephone. It is possible to provide a dial attachment device that can be attached to and detached from the device, has a simple configuration, is inexpensive, and has excellent operability.

[Brief explanation of the drawing]

Figures 1 to 5 are views showing one embodiment of the present invention, with Figure 1 being a top view showing the dial attachment device attached to the telephone, and Figure 2 being an exploded view showing the configuration of the dial attachment device main body. 3 is a sectional view showing the configuration of the dial attachment device main body in an installed state, FIG. 4 is a sectional view showing the mounting structure of the power unit and lighting control switch, and FIG. 5 is a circuit configuration of the dial attachment device. FIG. 1...Dial attachment device body, 2...Telephone, 3...Power unit, 4...Lighting control switch, 7...Terminal line cord, 8...・Connection cord, 11...Housing, 12...Push button accommodation hole, 13...Mounting part, 14...Claw,
15...Flexible board, 16...
Spacer, 17, 18... Electrode pair, 19...
...Terminal board, 20... Board, 21... Fixing ring, 22... Push button, 23...
・Lighting lamp, 35...L-shaped fitting, 36...
・First mounting bracket, 38...Second mounting bracket,
34, 37, 39...Screw, 40...Dial pulse generation circuit, 41...Main switch, 42
・・・・・・Power circuit.

Claims (1)

[Claims] 1 Consists of at least as many key switches as the number of dialed numbers and a casing that accommodates these key switches and covers the rotary dial from the outside of the telephone, and the connection between the mounting part provided on the casing and the rotary dial. It has an accessory main body that can be detachably attached to the rotary dial of the telephone depending on the case, and a mount that clamps the phone casing from the outside of the phone. It houses a dial pulse generation circuit that generates a dial pulse corresponding to the operated key switch when a switch is operated, is connected to the main body of the accessory device by a cord, and is connected to the subscriber line in parallel with the telephone set. 1. A dial accessory device comprising: a unit for sending dial pulses from a generating circuit to a subscriber line.