JPS59211127A - Multi-item input device - Google Patents

Abstract

PURPOSE:To eliminate a page sheet selection mistake due to a winding curl of the sheet of a page by ejecting automatically a cartridge when the power supply to a roll type item input device is interrupted. CONSTITUTION:When the input is through with a keyboard, a relay 23 tries to stop its action via a diode 26 with the fall of a power supply OFF signal waveform S given from the system side. In this case, a timer 19 is started via an inverter 20 and a switching transistor TR22 delivers the level of a keyboard power supply circuit 25 connected to the emitter side to the collector side for a fixed period of time T. Thus the relay 23 works continuously for the time T. The TR22 stops its working after the period T has passed, and the relay working current of the electrode 25 is cut off to open a relay contact 24. The timer acting period T is set long of comparison with the time during which a page sheet wound around a drum by six turns as shown by a waveform (u) is ejected.

Description

[Detailed description of the invention] (a) Technical field of the invention The present invention relates to a multi-item input device.

(b) Background of the Technology The input device according to the present invention consists of a cartridge (with
This keyboard device is configured to select and input desired page sheets and desired information items using a booklet (booklet), and is also commonly referred to as a roll-type item input device. What does that mean?

The purpose of the present invention is to improve the reliability of the device by dynamically discharging the cartridge when the power is turned off.

(C) Prior Art and Problems The configuration of a multi-item input device to which the present invention is applied and an overview of its operation are shown in the sectional view of the device configuration in FIG. 1, and the perspective view of a cartridge used in the device in FIG. 1 in FIG. Explain according to the following.

FIG. 1 is a simplified cross-sectional view of the device.

In the figure, 1 is a page sheet selection mechanism of a cartridge wound around a cylindrical drum, and 2 is a keyboard.

3 has 20 push button switches arranged on the front panel.

Reference numeral 4 denotes a cover sheet 2, and 5 a guide plate for selectively leading out a single sheet from the page sheet selection mechanism section 1.

6 is the aforementioned cylindrical drum; 7 is the shaft of the cylindrical drum 6;

Reference numeral 8 designates a drive shaft of an endless belt 9 that passes the cartridge in close contact with the cartridge wound around the cylindrical drum 6, and 10 designates a plurality of guide wheels of the endless belt 9.

Further, reference numerals 11 and 12 in the same figure respectively indicate an insertion opening end for mounting a cartridge into the page sheet selection mechanism section 1 and an insertion passage for the cartridge.

FIG. 2 is a perspective view of the cartridge.

In Fig. 2, 13 is a cartridge, and 14 is a plurality of page sheets made of flexible sheets such as polyester film, on which information items for making a large number of input specifications (not shown) are printed or otherwise displayed. . Fork.

Reference numeral 15 denotes a metal engagement pin at the winding end of the cartridge, which engages with the engagement stepped portion 16 of the cylindrical drum 6 in FIG. 1 and is wound around the keyboard 2.

In the figure, 17 is a sensor reading hole for identifying the cartridge 13 from other cartridges (the sensor mechanism is not shown), and 18 is a sensor hole for selecting a series of a plurality of page sheets 14 stored in the cartridge. .

Then, the cartridge is wound into the drum 6, the shaft 6 is rotated clockwise, and when the desired page sheet 14 reaches the selection guide plate 5, the rotation of the shaft 6 is stopped, thereby selecting a sheet. Next, the belt drive wheel 8 is actuated counterclockwise to draw out the selection sheet onto the keyboard switch arrangement surface.

By the way, in the conventional multi-item input device having the above-described operation and configuration, the cartridge 13 is connected to the page sheet selection mechanism section 6.
If the page sheet is left wound around the drum, the page sheet will become curly, which may cause the keyboard device to select the sheet incorrectly.

For this reason, the operator of the apparatus is required to eject the installed cartridge at the end of input, but this is a serious inconvenience as some users forget to remove the cartridge.

(d) Purpose of the Invention The purpose of the present invention is to solve the above-mentioned disadvantages. In other words, a circuit is added to automatically take out the cartridge from the keyboard when an input operation is completed.

(e) Structure of the Invention The above-mentioned object relates to a keyboard that stores a cartridge of wound page sheets displaying a plurality of pieces of input information, and the display information is displayed by drawing a desired sheet from the wound cartridge onto the keyboard. This is achieved by providing a multi-item input device with a timer function that automatically ejects the cartridge when the power supply circuit is turned off.

(f) Embodiments of the Invention The present invention will now be described in detail with reference to FIGS. 3 and 4.

FIG. 3 is a circuit diagram of a main part of a timer provided in the multi-item input device for automatically ejecting the cartridge at the end of input.

In the same figure, 19 is at the end of keyboard input.

20 is an inverter inserted between the timer and signal line S, 21 is a timer oscillator, 22 is a switching transistor, and 23 is connected to the interface signal line (signal line S) and ground. relay inserted between.

24 is a contact rl of the relay 23; 25 is a power supply circuit (for example, a DC 5V output power supply) that drives the relay 23 via the switching transistor 22; and 26 is a diode inserted between the signal line S and the relay 23. Next, the operation of the circuit shown in FIG. 3 will be explained according to the flowchart shown in FIG.

The S waveform in FIG. 4 is the power supply circuit OFF signal waveform that comes from the system side at the end of keyboard input. As the signal waveform S falls, the relay 23 attempts to stop its operation via the diode 26.

The timer 19 is then activated via the inverter 20.

During a certain period T, the switching transistor 22.

L/ of the keyboard power supply circuit 25 connected to the emitter side
The s waveform (same level as the M % level) is output to the collector side. Therefore, the relay operates continuously during the T period. The relay drive waveform during continuous operation during the T period is the t waveform in the same figure. shown.

However, after the T period, the transistor stops operating via the timer 19 by the timer oscillator 21 controlled by the transistor 22, and the relay operating current of the power supply 25 is cut off. Accordingly, the relay contact 24 is opened.

The timer operation period T is set longer than the time required to eject and drive the page sheet of six turns on the drum, as shown by the waveform U in the figure. However, the operating period T of the timer 19 can be freely set by one oscillator 21 as appropriate.

In this way, the cartridge will be automatically ejected when the power of this type of roll-type item input device is turned off, and the conventional problem of sheet selection errors due to curling of page sheets can be solved.

In the circuit of the embodiment, a relay is used for ON/OFF of the power supply 25, but the same function can also be obtained by using a photocoupler or the like.

(g) Effects of the Invention According to the multi-item input device of the present invention, which has been described in detail above, it is clear that the above-mentioned conventional disadvantages are solved and the reliability of input information selection is further improved.

[Brief explanation of drawings]

FIG. 1 is a sectional view illustrating the configuration of a conventional multi-item input device that is the subject of the present invention, FIG. 2 is a perspective view of a cartridge used in the device shown in FIG. 1, and FIG. 3 is a timer for power OFF of the present invention. The circuit diagram and FIG. 4 are operation flowcharts of the circuit of FIG. 3. In the figure, 3 is a push button switch of the keyboard 2, 5 is a page sheet selection guide plate, 6 is a cartridge winding drum, 7 is a shaft of the drum 6, 13 is a cartridge, 14 is a page sheet 19 is a timer, 20 is an inverter, 22 is a switching transistor, and 23 is a relay.

Claims (1)

[Claims] In a multi-item input device that stores a cartridge of a wound page sheet displaying a plurality of pieces of input information, the multi-item input device inputs the displayed information by deriving a desired sheet from the wound cartridge onto the keyboard. A multi-item input device characterized by having a function of automatically ejecting a cartridge when the circuit is OFF.