JP3277541B2 - Electric vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner for supplying power to a fan motor by switching between a rechargeable battery and a commercial power supply.

[0002]

2. Description of the Related Art Conventionally, this kind of vacuum cleaner has been disclosed in
JP-A-4-47345, JP-A-61-76120 or JP-A-63-38425, for switching and charging a rechargeable battery and a commercial power supply for a fan motor. The switching of the connection of the charging power supply to the battery is performed by the power switch of the cleaner main body (hereinafter, referred to as the main body).

[0003]

In such a conventional rechargeable vacuum cleaner, there is a problem that the position and the number of contacts of a power switch of the main body are large and the configuration is complicated. In addition, no configuration has been proposed that reliably switches between charging and driving of the fan motor.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a charge-and-change type vacuum cleaner which is easy to use with a simple configuration, can be realized at low cost, and has excellent reliability.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a power switch having a dust suction chamber, a built-in fan motor and a rechargeable battery, and a drive switch for driving the fan motor and charging the rechargeable battery. A vacuum cleaner main body, and a support base on which the vacuum cleaner main body is detachably mounted. The cleaner main body includes one side of the fan motor and the charging power supply.
An earth power receiving terminal connected to one side of the pond;
Of being connected to the other has a charging power receiving terminal, and a movable terminal connected to the other of said fan motor, provided with a switch contact portion comprising a fixed terminal connected to the other <br/> of the rechargeable battery, the fan between the other and the movable terminal of the motor, and arranged a power switch between the other and the charging power receiving terminals of the rechargeable battery, before Symbol support table supplies converts commercial power supply input to the charge output a fan motor drive output Power supply circuit,
An earth power supply terminal connected to the ground power reception terminal, a charge power supply terminal connected to the charge power reception terminal, and a drive power supply terminal for pressing and displacing the movable terminal, wherein when the cleaner body is mounted on the support base, First, the movable power terminal is pressed and displaced by a drive power supply terminal to electrically connect the movable terminal, and the movable terminal and the fixed terminal are separated from each other.
Means to solve the problem.

A second object of the present invention is to electrically connect a charging / receiving terminal and a fixed terminal of a switch contact portion to a main body of a vacuum cleaner according to the first aspect of the present invention when a power switch is turned off. Means.

Further, the ground power supply terminal and the charging power supply terminal of the first means for solving the problem are arranged such that after the drive power supply terminal presses and displaces the movable terminal to separate it from the fixed terminal, the ground power supply terminal provided on the cleaner body. The third problem-solving means is that it is connected to a charging / receiving terminal.

[0008]

According to the first aspect of the present invention, there is provided:
The movable power terminal is pressed and displaced by the drive power supply terminal to disconnect the rechargeable battery from the fan motor, and the drive power supply terminal is electrically connected to the movable terminal. Switching between driving by the rechargeable battery of the main body and driving by the driving output of the support base can be switched only by mounting the support base, and there is no need to increase the number of operation positions of the power switch accompanying mounting of the support base.

According to the second means for solving the problem, the charging can be performed with the power switch of the cleaner body turned off, so that the number of operation positions can be reduced.

Further, according to the third means for solving the problem, the ground power supply terminal and the charging power supply terminal are provided on the main body after the drive power supply terminal presses and displaces the movable terminal to disconnect the connection between the charging battery and the fan motor. Since the power receiving circuit is connected to the grounded power receiving terminal and the charged power receiving terminal, the load of the fan motor and the rechargeable battery is not simultaneously applied to the power supply circuit, and damage due to overload can be prevented.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

As shown in the figure, the main body 1 has a built-in fan motor 2 and a rechargeable battery 3, a power switch 4, a filter 5 on the suction side, and a suction port 6 at the tip. The dust collecting case 7 is locked and fixed with a buckle 8. Inside the rear surface of the main body 1, a movable terminal 9 made of a metal spring connected to the fan motor 2 side, and a rechargeable battery 3
A switch contact portion 12 made up of a fixed terminal 11 integrally formed is attached to the positive electrode side of a charging terminal 10 which is pressed against the contact of the contact terminal, and a terminal block 14 holding a charging control circuit 13 is attached. The support base 15 has a built-in inverter circuit (power supply circuit) 16, is provided with a drive power supply terminal 17, a charge power supply terminal 18, and a ground power supply terminal 19, is positioned by a guide pin 20, and is detachably attached to the main body 1 by a buckle button 21. are doing. 22 is a power cord. The allowance a of the drive power supply terminal 17 from the support base 15 is larger than the allowance b of the charging power supply terminal 18 and the ground power supply terminal 19. further,
The terminal block 14 of the main body 1 has a charging power receiving terminal 23 and an earth power receiving terminal 24 connected to the charging power supply terminal 18 and the earth power supply terminal 19.

The switch contact section 12 forms a series closed circuit with the fan motor 2 and the rechargeable battery 3, the movable terminal 9 is connected to the fan motor side, and the fixed terminal 11 is connected to the positive side of the rechargeable battery 3. The power switch 4 has two contacts S1 and S2 for reversing the connection, and connects the contact S1 between the fan motor 2 and the switch contact portion 12;
2 is connected between the positive side of the rechargeable battery 3 and the charge receiving terminal 23.

Next, the operation of the above configuration will be described.
Are connected, and the fan motor 2 is driven by the rechargeable battery 3 and turned on and off by the power switch 4. Then, when the capacity of the rechargeable battery 3 is reduced, when it is desired to use the battery for a long time, or when charging, the support base 15 is attached to the main body 1 and when the power switch 4 is turned on, the AC power is automatically supplied. The mode is switched to driving, and when the power switch 4 is turned off, the fan motor 2 is in a charged state while stopped. That is, the position of the power switch 4 is
The same position can be used directly. Further, the cutting position can be used as a charging position. Further, since the outgoing a is larger than the outgoing b, the drive power supply terminal 17 opens the switch contact portion 12 before the charging power supply terminal 18 and the ground power supply terminal 19 are connected. Irrespective of the state, both loads of the fan motor 2 and the rechargeable battery 3 are not applied to the inverter circuit 16, and overload can be prevented.

In the above embodiment, the drive power supply is a DC power supply by the inverter circuit 16. However, the fan motor 2 may be driven by two types of windings and directly driven by an AC output. Further, a stick handle may be provided on the support base 15 so that the support base 15 can be used as a stick type.

[0016]

As is apparent from the above embodiment, according to the present invention, when the cleaner main body is mounted on the support base, the movable power terminal is pressed and displaced by the drive power supply terminal to electrically connect the movable terminal to the movable terminal. By separating the terminal from the fixed terminal, the operation can be switched both in the AC and DC directions without increasing the position of the power switch, and the size and price of the power switch can be reduced, and the operation is easy. Usability can be improved.

Further, since the charging power receiving terminal and the fixed terminal of the switch contact portion are electrically connected when the power switch is turned off, the rechargeable battery can be charged with the power switch turned off.

Further, after the drive power supply terminal presses and displaces the movable terminal to separate it from the fixed terminal,
Since the connection is made to the ground power receiving terminal provided on the cleaner body, the switch contact is opened before the charging power supply terminal and the ground power supply terminal are connected, so both the fan motor and the rechargeable battery are connected to the power supply circuit. It is possible to prevent overload without applying a load and improve reliability.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view of a rechargeable / changeable vacuum cleaner according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the same-type dual-purpose vacuum cleaner.

FIG. 3 is a circuit diagram of a charge-change type vacuum cleaner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 2 Fan motor 3 Rechargeable battery 4 Power switch 9 Movable terminal 11 Fixed terminal 12 Switch contact part 15 Support base 16 Inverter circuit (power supply circuit) 17 Driving power supply terminal 18 Charging power supply terminal 19 Earth power supply terminal

Claims (3)

(57) [Claims] 1. A cleaner main body including a dust suction chamber, a fan motor and a rechargeable battery built therein, and a power switch for selecting driving of the fan motor and charging of the rechargeable battery; It consists of a support base to be attached,
The cleaner body is connected to one side of the fan motor and the charging
A ground power receiving terminal connected to one side of the battery;
A charging power receiving terminal connected to the other of the pond, and a movable terminal connected to the other of the fan motor, the other of said rechargeable battery
Provided with a switch contact portion comprising a fixed terminal connected towards, between the fan motor of the other and the movable terminal, and arranged a power switch between the other and the charging power receiving terminals of the rechargeable battery, before Symbol support table A power supply circuit that converts a commercial power input into a fan motor drive output and a charge output, and a ground power supply terminal connected to the ground power receiving terminal;
A charging power supply terminal connected to the charging power receiving terminal, and a drive power supply terminal for pressing and displacing the movable terminal, wherein when the cleaner main body is mounted on the support base, the movable terminal is pressed and displaced by the drive power supply terminal. A vacuum cleaner that is electrically connected and separates a movable terminal from a fixed terminal. 2. The vacuum cleaner according to claim 1, wherein the charging power receiving terminal and the fixed terminal of the switch contact portion are electrically connected when the power switch is turned off. 3. The ground power supply terminal and the charging power supply terminal are connected to the ground power receiving terminal and the charging power receiving terminal provided on the cleaner body after the drive power supply terminal presses and displaces the movable terminal to separate it from the fixed terminal. The vacuum cleaner according to claim 1, wherein