JPS6237976Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a dual-voltage pump that can be used in both high-voltage and low-voltage areas.

In order to be able to use the pump in both 110V and 200V areas, the main winding of the motor is usually divided into two parts, and the two main windings are connected in parallel in the 110V area, and in series in the 220V area. are doing. However, if a switch for changing this connection is provided on the outside of the pump, which is easily accessible, the switch may be accidentally operated at unnecessary times to change the connection, causing an accident.

This proposal changes the changeover switch to a connector and houses it inside the main body to make it difficult to change the connection.
In addition, the connection state is made visible from the outside to prevent accidents.

Referring to the drawings below, reference numeral 1 denotes a portable pump, and a pump chamber 4 has a water inlet 2 and a water outlet 3.
is formed on one side, and a motor storage chamber 6 is formed on the other side with the holder portion 5 interposed therebetween. A motor 7 is housed in this motor housing chamber slightly below the center, and a handle 8 is formed above the motor housing chamber. Reference numeral 9 denotes a cooling fan attached to one end of the motor shaft, which cools the motor 7 by sucking air through an intake port 10 formed on one side of the motor storage chamber when the motor 7 rotates. Reference numeral 11 denotes a connector mounting plate, the lower end of which is attached to the bracket 12 of the motor, and the upper end of which protrudes to the lower part of the handle 8, and a female connector 13 for low voltage and a female connector for high voltage are attached to the protruding portion. 14 is installed. 15 is a male connector,
In low voltage areas, it is fitted into the low voltage female connector 13, and in high voltage areas, it is fitted into the high voltage female connector 14. On the other hand, the motor 7 has its main winding composed of a first main winding 16 and a second main winding 17,
The first and second main windings 16 and 17 are switched in series and parallel in low voltage areas and high voltage areas. 18 is an auxiliary winding, 19 is a capacitor, and 20 is an overload switch.

Male connector 1 in low voltage area (110V area)
5 into the low voltage female connector 13, the terminals A and C of the male connector 15 are connected to the terminals A and C of the female connector 13, respectively, so that the first main winding 1
6 and the second main winding 17 are connected in parallel.
The power supply voltage of 110V is directly applied to the second main windings 16 and 17. On the other hand, when the male connector 15 is connected to the high voltage female connector 14, terminal A of the male connector is connected to terminal I of the female connector 14, so the first and second main windings 16 and 17 are connected in series.
As a result, the power supply voltage is divided into two and applied to the first main winding 15 and the second main winding 17, so in a 220V area, 110V is applied to the first main winding 16 and the second main winding 17, and each winding The voltage applied to the line is the same as when used in a 110V area.

Replacing the male connector 15 is done by inserting your hand through an opening 21 provided in the side wall of the motor storage chamber 6 opposite to this connector, but this opening is normally covered by a removable transparent cover 22. ing. Therefore, retailers and users can recognize whether the connection is compatible with the voltage of their country without removing the lid 22, and can prevent accidents caused by using the wrong voltage. can.

As described above, since the present invention is provided with the low voltage connector 13 and the high voltage connector 14, it can be used in both low voltage areas and high voltage areas, and the connector is provided in the motor storage chamber 6. Therefore, it is easier to switch and accidents are less likely to occur, unlike when the switch is exposed to the outside. Further, the motor storage chamber is provided with an opening 21 in a portion facing the connectors 13 and 14, and this opening is covered with a transparent lid 22, so that the connection state of the connector can be known from the outside, and the connection state can be checked from the outside. It is easy to see whether or not the voltage is suitable for the power supply voltage, which can reduce incorrect usage. Furthermore, since the pump chamber 4 generally has a steam/water separation chamber or the like in its upper part, the impeller within the pump chamber is located at a relatively lower portion, and as a result, the motor 7 is mounted at a relatively lower portion within the motor housing chamber 6. However, since the handle 8 is formed in the space created above the motor and this space is used as the mounting part for the connectors 13 and 14, the space that would otherwise be wasted can be used effectively. can. Furthermore, since the lower end of the connector mounting plate 11 is attached to the motor bracket 12, no special member is required to support the connector mounting plate, and the structure can be simplified.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of the pump of the present invention, FIG. 2 is a rear view, and FIG. 3 is an electric circuit diagram. 4...Pump chamber, 8...Handle, 6...Motor storage chamber, 7...Motor, 12...Bracket, 11
... Connector mounting plate, 13 ... Female connector for low voltage, 14 ... Female connector for high voltage, 15 ... Male connector, 21 ... Opening, 22 ... Transparent lid.

Claims (1)

[Scope of utility model registration request] A motor storage chamber with a pump chamber formed on one side and a handle on the top, a connector mounting plate protruding upward from the bracket of the motor stored in the motor storage chamber, and a low-pressure connector mounted on the mounting plate. and a female connector for high voltage, a male connector selectively attached to both connectors depending on the power supply voltage, an opening formed in the side wall of the motor storage chamber opposite to these connectors, and a connector for attaching and detaching the connector to the opening. A dual-voltage pump consisting of a transparent lid that can be attached freely.