JPH02144032A - Charging vacuum cleaner - Google Patents

Abstract

PURPOSE:To prevent electric power from its useless consumption and the charging-discharging life of a secondary battery from damages even if the turning-off of a switch is forgotten, by applying conductive paint to a handle part of a main body and providing a control circuit for controlling the drive of an electric blower according to the potential of the handle part separately from the switch. CONSTITUTION:Conductive paint 8 is applied to a handle part 7 formed on a main body 1, and a control circuit 9 is provided which detects the potential of the handle part to control the drive of an electric blower 2. The control circuit switch 4 is connected in series to the control circuit 9 to drive the electric blower 2. Thus, when the turning-off of the switch is forgotten and left as it is, one's hand of a medium for earth is separated from the hand part and the potential of the hand part having the conductive paint applied is held at high potential, so that the potential is detected by the control circuit to disconnect the communication between the electric blower and a secondary battery. Thus, useless power is not used and the secondary battery can be economically prevented from an over-discharging phenomenon without any fear of damaging a charging-discharging life.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a rechargeable vacuum cleaner.

2. Description of the Related Art Conventionally, this type of rechargeable vacuum cleaner generally has a configuration as shown in FIG. Power was supplied from a secondary battery 24.

Problems to be Solved by the Invention In such a conventional rechargeable vacuum cleaner, the switch 23
If you forget to turn it off, there is a risk that the secondary battery 24 will over-discharge and become unchargeable, and its charging/discharging life will be shortened. In addition, it was uneconomical because it used unnecessary electricity during periods of use.

The present invention solves these problems, and aims to provide a rechargeable vacuum cleaner that does not use unnecessary power and does not impair the charging/discharging life of the secondary battery even if you forget to turn it off. There is.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention applies a conductive paint to the handle part of the main body, and controls the drive of the electric blower separately from the switch depending on the level of potential of the handle part. It is equipped with a circuit.

Effects of the present invention Due to the above-described structure, if you forget to turn off the switch and leave it unattended, the hand that acts as a grounding medium will move away from the handle part, and the potential of the clap part coated with conductive paint will remain high. The control circuit detects this and opens the connection between the electric blower and the secondary battery. This eliminates the need to use unnecessary power, which is economical, and prevents over-discharging of the secondary battery, so there is no need to worry about damaging the charging/discharging life.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.

In Figures 1 and 2, 1 is the main body of the rechargeable vacuum cleaner;
An electric blower 2 and a power supply unit 2 for driving it
A secondary battery 3 and a switch 4 for controlling the drive are provided inside, and a dust collection box 8 having a filter 6 is connected to the front part.

A conductive paint 8 is applied to the handle portion 7 formed on the main body 1,
A control circuit 9 is provided that senses the level of potential of the handle portion 7 and controls the drive of the electric blower 2.

This control circuit 9 is connected in series with the switch 4 as shown in FIG. 2, and drives the electric blower 2.

In the above configuration, the operation is explained as follows: During cleaning, the hand touches the handle 7, so the hand acts as a grounding medium, and the potential of the handle 7 becomes low (if it is not grounded, the potential becomes high). Set the default settings). When the potential of the handle portion 7 is low, the control circuit 9 detects this and closes the circuit.

If you forget to turn off the switch 4 and leave it unattended, the handle 7
Since there is no grounding medium and the potential becomes high, the control circuit 9 detects this, opens the circuit, and stops driving the electric blower 2.

In this way, according to the rechargeable vacuum cleaner according to the embodiment of the present invention, even if you forget to turn off the switch 4, the electric blower 2 can be stopped as soon as you release your hand from the handle 7, thereby saving wasted power. It is economical because it does not need to be used, and can prevent over-discharge of the secondary battery 3, so there is no need to worry about damaging the charging/discharging life.

Effects of the Invention As described above, according to the present invention, even if you forget to turn off the switch, the control circuit detects that the potential of the handle coated with conductive paint is high, opens the circuit, and turns on the electric blower. Since it can be stopped, unnecessary power is not used, which is economical. Furthermore, since over-discharge of the secondary battery can be prevented, there is no need to worry about damaging the charging/discharging life.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a rechargeable vacuum cleaner according to an embodiment of the present invention, FIG. 2 is a circuit diagram thereof, and FIG. 3 is a schematic diagram of a conventional rechargeable vacuum cleaner. 1...Main body, 2...Electric blower, 3.
...Secondary battery, 4...Switch, 5...
...Filter, 6...Dust collection box, 7...
・・・Handle part, 8... Conductive paint, 9...
・Control circuit. Name of agent: Patent attorney Shigetaka Awano and 1 other person N faction

Claims (1)

[Claims] The main body includes an electric blower, a secondary battery for driving the blower, a switch for controlling the drive, and a dust collection box having a filter.The handle of the main body is coated with conductive paint, and the handle is A rechargeable vacuum cleaner is provided with a control circuit that controls the drive of an electric blower separately from the switch according to the level of electric potential.