JPS5850443Y2 - Densi register - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an electronic register that takes battery operation into consideration.

Since general electronic registers are equipped with mechanical printers that require large amounts of driving power, they typically use AC power.

In this case, an induction motor is used as the motor for driving the printer, and the configuration is such that the motor is directly driven by an AC power source.

In such an electronic register, if it is possible to drive it by a DC power source such as a battery in consideration of the case where it is installed in a car etc., the above induction motor is driven by a battery power source. In order to
It is necessary to create a commercial frequency using an AC converter.

However, in order to obtain a commercial frequency, a large transformer is required for the DC-AC converter, which makes the device expensive and large, making it unsuitable for mobile use.

In addition, if the above motor is a DC motor so that it can be directly driven by a battery without using a DC-AC converter, etc., a rectifier circuit and a transformer are installed on the AC power supply side, and a set of insulated and rectified DC power supplies are installed on the AC power supply side. It is necessary to create

This case also has the disadvantage that the device is expensive and large due to the use of a transformer.

This idea was made in this regard, and AC,
DCC electric power source... Purpose.

This is an electronic cash register that has a simple structure, is small and lightweight, and is equipped with a power supply device that can drive the register body using an AC power source, a battery built into the register body, or a DC power source such as a car battery. The purpose is to obtain a suitable electronic register.

The device of the present invention that achieves this objective will be described in detail below with reference to examples.

FIG. 1 is a circuit diagram of a main part of an apparatus according to an embodiment of the present invention, particularly showing a power supply section.

In the drawing, 1 is a general rectifier circuit, which is connected to an AC power source 3 via a power switch 2.

4 is a switching regulator that steps down and stabilizes the output of the rectifier circuit 1 to a voltage that can directly drive a DC motor. In the device of the present invention, the rectifier circuit 1 and this switching regulator 4 convert the AC power source 3 into DC. It's getting older.

5 is a first connector member, and input/output terminals 6 a , 6
The input terminals 6a, 6b are connected to the output of the switching regulator 4, and the output terminals 6ct are connected to the output of the switching regulator 4.
6d includes a DC motor 7 for driving the printer and a DC-D motor for supplying constant voltage to electronic circuits that perform various calculations.
It is connected in parallel with the C converter 8.

Note that the terminals 6e and 6f have a configuration unique to this embodiment, and are provided for charging the battery based on the output of the DC-DC converter 8, as will be described later.

Therefore, this terminal is not necessarily necessary for the device of the present invention.

FIG. 2 is a diagram showing a second connector member coupled to the first connector member 5 and various connection states thereof.

Figure A shows the second connector member 9 when the electronic register is used only with an AC power source, and the terminals 10a, 10b correspond to the respective terminals 6a, 6b, 6c, 6d of the first connector member 5. , 10c, and 10a are connected as shown.

Therefore, when this second connector member 9 is coupled to the first connector member 5, the input and output sides of the first connector member 5 are connected, and the DC motor 7 and the DC-DC converter 8 are connected to each other. The supplied AC power supply voltage is supplied in a floating state.

Incidentally, since the power supply voltage is applied to the DC motor 7 in a floating state, it is necessary to employ a motor with high dielectric strength.

The opening in FIG. 2 shows the battery option unit, and the terminals 10a, 10c of the second connector member 9
Changeover switches 11 and 12 are inserted between 0b and 10a, and a battery 13 is connected.

This changeover switch LL12 is interlocked, and as shown in the figure, in the first state, the terminals 10a, 10c and 10
b and 10a are connected, and the second state (the state shown by the dotted line)
At terminal 10e, a 10dK battery output is supplied.

Therefore, when the second connector member 9 is connected to the first connector member 5, if the changeover switch 11.12 is set to the first state, the DC power from the AC power source is transferred to the DC motor 7 and the DC-DC converter. 8 and switch 1
1,120 In the second state, the output of the battery 13 is supplied.

That is, the changeover switches 11 and 12 operate as AC-DC changeover switches.

This battery option unit is further provided with a switch 14 that connects the charging section of the battery 13 to the terminal IQf.
is connected, the terminal 10e is connected to one side terminal of the battery 13, and the squirrel inch 14 is closed.
The battery 13 is configured to be charged by the output 1 of the DC-DC converter 8.

The switch 14 is linked to the changeover switch LL12,
In the first state of the switch 1L12, which sets AC drive, it is closed, and in the second state of the switch 11.12, which sets DC drive, it is opened.

Figure 2 C shows an optional unit when using a car battery etc. as a power source.
A connector 15 is attached in place of the connector 3, so that it can be connected to a car battery or the like.

In this case, AC-D depending on the changeover switch 11°120
The switching operation of the C power supply is the same as that of the device shown in the same section.

As described above, the electronic cash register of the present invention can be easily operated to drive the cash register main body using either an AC power source, a battery built into the register main body, or a car battery. Since it has a simplified structure and a small and lightweight power supply device, it is very suitable for mobile use.

Naturally, the price will also drop at this time.

Furthermore, since a switching regulator with low power loss is used for constant voltage, the allowable range of AC power supply voltage is wide, and frequency switching is not necessary due to the adoption of a DC motor, so differences in power supply voltage and frequency can be achieved. This eliminates the need for switching depending on , and provides excellent versatility.

[Brief explanation of drawings]

FIGS. 1 and 2 are circuit diagrams of essential parts of the device of the present invention. 1... Rectifier circuit, 3... AC power supply, 4
...Switching regulator, 5...
・First connector 7...DC motor, 8...
...DC-DC converter, 9...second connector.

Claims (1)

[Claims for Utility Model Registration] A rectifier circuit that rectifies AC power, a switching regulator that makes the output of this rectifier circuit a constant voltage, and a constant voltage that connects the output of the switching regulator to input terminals 6at6b to a DC motor and electronic circuit for driving the printer. A first connector member in which a DC-DC converter for supplying power is connected in parallel to an output terminal 6ct6d, and each input/output terminal 6a, 6b, 6c of the first connector member,
Terminal groups 10a and 10b are disposed corresponding to terminals 6d and formed so as to be able to be coupled to and detached from respective corresponding terminals. 10c and 10d, and the terminal 10a. 10c and the connection between terminals 10b and 10d and the terminal 1
1. An electronic register comprising: a power supply device comprising a second connector member provided with a switch means capable of arbitrarily switching connection between the internal battery of the register main body or the car battery with respect to 0c t 1 oa;