JPH0122609Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field The present invention is an electrical system that can be used in both high-voltage and low-voltage regions by simply switching the wiring without replacing the commutator motor or low-voltage transformer relay. It concerns vacuum cleaners.

(b) Conventional technology Conventional vacuum cleaners for export were manufactured in high voltage areas (200
~240V) and low voltage areas (100~120V), it was necessary to replace the commutator motor and transformer relay. (see publication), it became possible to use a single motor by simply switching the wiring.

However, it is impossible to use a hand switch by using the transformer relay as it is because the transformer relay will burn out, and this has the disadvantage that the vacuum cleaner is not easy to use.

(c) Purpose of the invention The purpose of the invention is to eliminate the above-mentioned inconvenience and provide an inexpensive vacuum cleaner.

(d) Structure of the invention The vacuum cleaner of the invention has a two-voltage commutator motor that can be used in high- and low-voltage regions by switching the connection to the rotor winding, and a low-voltage motor that can be used as a hand switch. It is characterized by comprising a transformer relay and a resistor having an electrical resistance approximately equal to that of the transformer relay, and in a high voltage region, the transformer relay and resistor are connected in series.

(e) Examples Examples of the present invention shown in the drawings will be described below.

Reference numeral 1 denotes a two-voltage commutator motor that serves as a drive source for a suction device built into the vacuum cleaner body, and the motor includes a first rotor winding 2 and a first stator winding 3 that are connected in series. and a second rotor winding 4 and a second stator winding 5, these series-connected windings are connected in parallel as shown by the solid line with arrows in low voltage areas by a switch 6, In voltage areas, connect them in series as shown by the dotted lines with arrows. Reference numeral 7 denotes another connection switch which switches in conjunction with the switch 6, and a resistor 8 is connected in series to the primary winding 10 of the low voltage transformer relay 9 only in high voltage areas. The resistance value of this resistor 8 is approximately the same as that of the transformer relay 9. 11 is a hand switch connected to the secondary winding 12 of the transformer relay 9;
ON-OFF turns ON-OFF the relay contact 14 connected between the power supply 13 and the two-voltage commutator motor 1.
let

In the above configuration, when used in a low voltage area, if both the switching device 6 and the connection switching device 7 are connected with solid lines with arrows, the first rotor winding 2 and the first stator winding The series circuit of 3 and the series circuit of the second rotor winding 4 and the second stator winding 5 are connected in parallel, and by turning on the hand switch 11, the relay contact 14 of the low voltage transformer relay 9 is turned on.
Turn on.

As a result, the two-voltage commutator motor 1 is driven, and the suction device is activated to perform cleaning.

In addition, when used in a high voltage area, if the switch 6 and the connection switch 9 are linked to make the connection shown by the dotted line with an arrow, the first rotor winding 2 and the first stator winding 3 will be connected. a series circuit, a second rotor winding 4 and a second rotor winding 4;
A series circuit of stator windings 5 is connected in series, and a resistor 8 is connected to the primary winding 10 of the transformer relay 9.
are connected in series, and the voltage of the power supply 13 is applied to the primary winding 10 and the resistor 8 in approximately equal parts. When the hand switch 11 is turned on in this state, the relay contact 14 is turned on, the two-voltage commutator motor 1 is driven, and cleaning can be performed by the action of the suction device.

(f) Effects of the invention Since the vacuum cleaner of the invention is configured as described above, there is no need to replace the motor and transformer relay depending on the voltage of the area of use, and it is possible to use only one type of motor with switchable wiring. It becomes possible to supply the vacuum cleaner to low voltage areas and high voltage areas by simply switching the connection using a transformer relay that connects and disconnects the resistor.

[Brief explanation of drawings]

The drawing is an electrical circuit diagram of a vacuum cleaner according to the present invention. 1...Two-voltage commutator motor, 6...Switcher,
7... Connection switch, 8... Resistor, 9... Transformer relay.

Claims (1)

[Claims for Utility Model Registration] (1) A two-voltage commutator motor that can be used in high- and low-voltage areas by switching the connection between the rotor winding and stator winding, and a low-voltage motor that can be used as a hand switch. Comprising a voltage transformer relay and a resistor having an electrical resistance value approximately equal to that of the transformer relay,
A vacuum cleaner characterized in that only the transformer relay is used in low voltage regions, and the transformer relay and resistor are connected in series in high voltage regions. (2) The vacuum cleaner according to claim 1, characterized in that the switching of the wiring connection of the two-voltage commutator motor and the wiring connection of the low-voltage transformer relay are performed in conjunction with each other.