JPS5834525Y2 - Electronic cash register - power switching circuit in in-line system - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an electronic cash register in which the power supply to each electronic cash register can be remotely controlled from a parent electronic cash register in an in-line system in which a plurality of electronic cash registers are combined.

In superstores, etc., multiple electronic cash registers, each connected to a power source, are placed at the store and are called child electronic cash registers (hereinafter referred to as slave machines), and these are called parent electronic cash registers (hereinafter referred to as master machines). An inline system has been adopted that centrally manages the data of each child device by connecting it to the parent device and loading the data to each device, but the power on and off of each device is still controlled individually. The power switch had to be turned on and off manually for each machine.

If the power is turned off by a person, there is no problem because the operator does it, but if the operator needs to turn off the power, the operator should turn off the power, but depending on the situation during that time or due to forgetfulness, there may be cases where the operator does not turn off the power. Therefore, we are patrolling each aircraft to confirm this.

Such operations reduce the effectiveness of in-line systems, which have great labor-saving effects.

The purpose of this invention is to reduce the effort required to turn on and off the power to each machine.

The configuration of the present invention will be explained below according to an embodiment attached in a separate sheet.

In FIG. 1, the parent electronic cash register 1 and each child electronic cash register 2 are connected by a path line 4 via a connector 3 to form an inline system, and furthermore, a A power ON signal line 5 and a power OFF signal line 6 for turning off the power are connected to each machine via a connector 3, and each machine has a power cord 7.

FIG. 2 is a power supply switching circuit diagram provided in each handset 2, in which 1 is a latch relay, and a closing coil 8 is connected to the power OFF signal line 6, and a disconnection coil 9 is connected to the power ON signal line 5.
The normally closed relay contact 10 is opened by the excitation of the closing coil 8 and mechanically maintained in the open state, and the mechanical holding is released by the excitation of the non-pulling coil 9 and the contact is closed again.

Contrary to the above, the normally open relay contact 11 closes when the closing coil 8 is energized, holds the machine, and does not pull the coil 9.
The contacts are made to be open during excitation.

A power switch 14 and the normally closed relay contact 10 are connected in series to the - line 13 on the input side of the electronic cash register power supply section 120.

The power switch 14 is a selection switch that can select a negative terminal (referred to as a re-ON terminal) 15 in addition to ON and OFF, and connects this terminal 15 to the non-grounded side of the non-pulling coil 9. Although the normally open relay contacts 11 are provided in series, in this embodiment, a rectifier circuit 16 is further provided in a bridge type connection as shown in the figure in order to operate the relays with direct current.

Note that it is appropriate that this rectifier circuit section also includes a constant voltage circuit, but the details will be omitted.

In the circuit of the present invention configured as described above, a power supply state is now established in which the power switch 14 is turned on and the normally closed relay contact 10 is closed.

Here, in order to cut off the power to each machine due to the end of work on (a)-day, etc., if you operate the parent machine and send a power OFF signal, the latch relay 10 closing coil 8 will be energized, and the normally closed relay contact will be turned off. 10 is opened and this state is mechanically maintained, so the power is cut off.

At this time, at the same time, the normally open relay contact 11 is closed due to the excitation of the closing coil 8.

(b) Next, turn on the power from the main unit to supply power again.
When a signal is sent, the non-trip coil 9 of the latch relay 1 is energized, and the mechanical holding of the normally closed relay contact 10, which was opened in the previous stage, is released, and the contact is closed again, and power is supplied.

As described above, when the power switch 14 of each machine is in the ON state, the power supply opening/closing can be controlled from the master machine.

(・→ In a state where the power is cut off by the operation of the master unit in (a) above, that is, in a state where the normally closed relay contact 11 is opened and the normally open relay contact 11 is closed and these are held mechanically) , If you want to supply power to each machine by manual operation, turn on the power switch 14 once and then turn it back on to the ON terminal 15.
When the switch is switched to
The mechanical holding of the normally open relay contact 11 is released and the contact is closed, and the mechanical holding of the normally open relay contact 11 is released and it is opened.

If you then turn on the power switch 14, power will be supplied, so even if the power is cut off by the power OFF signal from the base unit, the power at each machine can be turned on.
, can be turned off freely.

There are conventional methods for controlling the power supply opening and closing of electrical equipment by remote control, but in this type of device, the selection switch installed on each device selects between local control and remote control. If you select , remote control is not possible.

On the other hand, as described in (a), (b), and (1), according to the remote power switch circuit of the present invention, if the power switch of each slave unit is turned on, each slave unit will also The power can be turned on and off from the machine, and the power can be turned off from the main unit.
Even when the power is cut off, the signal allows power to be supplied to each device using the power switch.

Note that a rectifier circuit is provided because a DC load relay is used, but it is not necessary when using an AC load relay.

Further, although a normally closed relay contact is used on the input side of the power supply section, any normally open relay contact may be used as long as a closing coil, a pulling coil, etc. are appropriately provided.

The normally open relay contact 11 connected to the non-grounded side of the non-pulling coil is turned on when the power switch is selected as the ON terminal again, current is passed through the non-pulling coil 9 to excite it, and the normally closed relay contact 10 is closed again. At the same time, it is used to cut off the unnecessary current to the coil 9, and even if this does not work, the desired effect can still be obtained.

In addition, the power switch turns the OFF terminal back on to the ON terminal 15.
It is also possible to use it as

As explained above, according to the power switching circuit of the present invention, in an electronic cash register inline system,
This has the practical effect of reducing labor because it can be controlled by the parent electronic cash register without having to individually open and close the power supply.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is an explanatory diagram of electronic cash register connection in an in-line system, and FIG. 2 is a power supply switching circuit diagram for each machine. Code explanation, 1... Parent electronic cash register, 2... Child electronic cash register, 3...
...Connector, 4...Pass line, 5...
... Power ON signal line, 6... Power OFF signal line, 7... Power cord, 8... Closing coil, 9... No pulling coil. , 10...
・・Normally closed relay contact, 11・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・DEPT. 15...
Re-ON terminal, 16... Rectifier circuit.

Claims (1)

[Scope of utility model registration request] In an in-line system consisting of a plurality of electronic cash registers each connected to an individual power supply, each child electronic cash register is provided with a latch relay operated by a power ON signal and a power OFF signal from a parent electronic cash register; A relay contact and a power switch of the latch relay are connected in series to the - line on the power input side, and the power switch is connected to the non-grounded side of the appropriate one-force coil of the latch relay. The terminals can be selected, and the wires are connected so that input power is supplied to the coil to excite it, so that the power to each child electronic cash register can be turned on or off by a signal from the parent electronic cash register. A power supply switching circuit for an electronic cash register in-line system which enables the power to be turned on and off by means of a power switch regardless of the critical state determined by the signal.