JPH09299292A - Electric vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric vacuum cleaner for preventing a fault by preventing the operation of a blowing motor even when a user turns on a power source without noticing a clearance. SOLUTION: By providing a switch 10 to be opened and closed by the opening/closing of a lid body 4 on the front vertical surface 7d of a front part side wall 7 and connecting the switch 10 between the blowing motor 2 and a main switch for opening and closing the power source of the blowing motor 2, since the lid body 4 is abutted to the projection 9C for an operation of a holding body 9 and is not closed when a paper pack 6 is not mounted, the switch 10 can not be closed and the power is not supplied to the blowing motor 2 even when the main switch is closed, the blowing motor 2 is not operated. When the paper pack 6 is mounted, the projection 9C for the operation of the holding body 9 is moved, the lid body 4 is completely closed and the switch 10 can be closed. Since the power 15 supplied to the blowing motor 2 and it is operated when the main switch is closed, even when the user turns on the power source without noticing the clearance, the blowing motor 2 is not operated and this electric vacuum cleaner for preventing the fault is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner, and more particularly to prevention of forgetting to attach a paper pack.

[0002]

2. Description of the Related Art As shown in FIG.
An electric vacuum cleaner having a blower motor 2 in the rear part and a dust collecting chamber 3 in the front part is provided with a lid 4 which is axially supported by a shaft supporting part 4a on the upper part of the dust collecting chamber 3 to open and close the dust collecting chamber 3. A suction port 5 for connecting a suction hose is provided on a front side wall 7 of the chamber 3, and a guide 8 extending vertically is disposed opposite to the vertical surface 7a of the front side wall 7 on both sides of the suction port 5. A holder 9 provided with an operation protrusion 9c on the upper surface 7b of the side wall 7 is housed in the dust collecting chamber 3 along with the guides 8.
The mouth frame 6a was attached and the mouth frame 6a was held by the holder 9. When the mouth frame 6a of the paper pack 6 is not attached to the guide 8, the operation projection 9
c is brought into contact with the lid body 4 so that the lid body 4 is not completely closed and a gap is opened between the lid body 4 and the dust collecting chamber 3 so that the user is not fitted with the paper pack. I was trying to let you know. However, in this configuration, there is a problem that the user does not notice the above-mentioned gap, operates by turning on the power, and causes the blower motor or the like to malfunction due to the inhaled dust.

[0003]

SUMMARY OF THE INVENTION The present invention solves the problems described above, and prevents the blower motor from operating even if the user turns on the power without noticing the above-mentioned gap, thereby preventing a failure. Intended to provide a vacuum cleaner.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention comprises a blower motor at the rear of a cleaner body and a dust collecting chamber having an open upper surface at the front, and an upper part of the dust collecting chamber. The lid is openable and closable, the front side wall is provided with a suction port for connecting a suction hose, and guides extending in the up-down direction facing the front side wall on both sides of the suction port are provided on the upper surface of the front side wall. A holder provided with an operation protrusion is provided on the upper part, and the mouth frame of the paper pack to be housed in the dust collecting chamber is removably attached according to both guides so that the holder holds the mouth frame. In an electric vacuum cleaner in which the lid does not hit the operation projection and is not completely closed when a paper pack is not attached, a switch which is opened and closed by opening and closing the lid is provided above the front side wall. Main switch that opens and closes the blower motor and the power supply of the blower motor Connected between a blower motor cartons it is not attached is not to work.

[0005]

With the above construction, in the electric vacuum cleaner of the present invention, a switch that opens and closes by opening and closing the lid is provided above the front side wall, and the switch is used as a blower motor. By connecting it to the main switch that opens and closes the power supply of the blower motor, the lid will not hit the operation protrusion of the holder to close unless the paper pack is installed.
Since the switch cannot be closed, and the power is not supplied to the blower motor even if the main switch is closed, the blower motor does not operate, and when the paper pack is loaded, the operation protrusion of the holder moves and the lid is closed. Since the body can be completely closed to close the switch, power can be supplied to the blower motor to operate by closing the main switch and turning on the power.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A vacuum cleaner according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side sectional view of an essential part showing an embodiment of the electric vacuum cleaner according to the present invention. In the figure, 1 is a cleaner body, 2 is a blower motor, 3 is a dust collection chamber, and 4 is a lid body which is pivotally supported by a pivotal support portion 4a. The lid 4
At a position corresponding to the operation protrusion 9c of the holding body 9 described later, the protrusion 4b that prevents the lid 4 from being closed by coming into contact with the operation protrusion 9c, and a pressing force that presses the switch 10 described later. A projection 4c is provided. Reference numeral 5 denotes a suction port for connecting a suction hose, which is provided in front of the dust collecting chamber 3 and is fitted in a through hole 7c provided in a vertical surface 7a of a front side wall 7 described later in front of the dust collecting chamber 3. The outlet portion 5a of the suction port 5 projects from the vertical surface 7a of the front side wall 7. Reference numeral 6 denotes a disposable paper pack housed in the dust collection chamber 3, which has a bag 6b fixed to the mouth frame 6a.

Reference numeral 7 denotes the front side wall, which has a vertical surface 7a standing vertically, a front vertical surface 7d, and an upper surface formed at an upper portion at a right angle to the vertical surface 7a, and the vertical surface 7a has the through hole. 7c
Is provided, and the suction port 5 is fitted in the through hole 7c. Further, a holding body 9 described later is rotatably attached to the upper surface above the suction port 5.

Reference numeral 9 denotes a shaft support portion 9b on the upper surface above the suction port 5.
The holder 9 is rotatably attached to the upper portion and has an operating projection 9c on the upper portion, and a spring 9a for urging the holder 9 upward is attached between the spring 9a and the upper surface.

Reference numeral 10 denotes the switch, which is provided above the front vertical surface 7d of the front side wall 7 and is opened / closed by a pressing projection 4c provided on the lid 4. This switch 10 is shown in FIG.
As shown in the circuit diagram of (A), if the main switch 11 is connected in series between the main switch 11 and the blower motor 2 and the switch 10 is closed, the main switch 11 can be operated. As shown in the circuit diagram of B), the winding current of the relay 12 connected in series between the main switch 11 and the blower motor 2 is opened and closed, and when the switch 10 is closed, the contacts of the relay are closed. 12a is closed so that the main switch 11 can be operated.
Further, a buffer mechanism such as a leaf spring may be provided on the pressing protrusion 4c provided on the lid body 4 so that the switch 10 is not destroyed by an impact.

Next, the operation of the above configuration will be described. Now, if the lid 4 is to be closed without mounting the paper pack, as shown in FIG. 3A, the holding body 9 is rotated rearward by being biased by the spring 9a, and the operation projection 9c is released. Since it moves rearward, the projection 4b provided on the lid 4 hits the operation projection 9c and the lid 4 cannot be completely closed.
The gap is opened, and the pressing projection 4c provided on the lid 4 is provided with the switch 1
Since 0 cannot be pressed, the switch 10 remains open, and the blower motor does not operate even if the main switch 11 is closed. Further, when the paper pack is mounted, as shown in FIG. 3- (B), the holder 9 rotates forward and the operation protrusion 9c moves forward, so that the protrusion 4b provided on the lid 4 is the same. The lid 4 can be completely closed without hitting the operation protrusion 9c, and the pressing protrusion 4c provided on the lid 4 presses the switch 10 to close the switch 10, so that the main switch 11 is closed to turn on the power supply. When is turned on, the blower motor operates.

[0011]

As described above, according to the electric vacuum cleaner of the present invention, the switch which is opened and closed by opening and closing the lid is provided above the front side wall, and the switch is blown together with the blower motor. By connecting it to the main switch that opens and closes the power supply of the motor, the lid cannot be closed by hitting the operation protrusion of the holder unless a paper pack is installed, so the switch cannot be closed. Even if the switch is closed, power is not supplied to the blower motor, so the blower motor does not operate, and when the paper pack is loaded, the operating protrusion of the holder moves and the lid completely closes and the switch closes. Therefore, if the main switch is closed, electric power is supplied to the blower motor and it can operate.Therefore, even if the user turns on the power without noticing the gap, the blower motor does not operate and malfunctions. Vacuum cleaner that prevents It can be provided.

[Brief description of drawings]

FIG. 1 is a side sectional view of an essential part showing an embodiment of an electric vacuum cleaner according to the present invention.

FIG. 2 is a circuit diagram showing an embodiment of the electric vacuum cleaner according to the present invention.

FIG. 3 is a side sectional view of an essential part showing an operation example of the electric vacuum cleaner according to the present invention.

FIG. 4 is a side sectional view of a main part of a conventional electric vacuum cleaner.

[Explanation of symbols]

 1 Vacuum Cleaner Main Body 2 Blower Motor 3 Dust Collection Room 4 Lid 4a Shaft Support 4b Projection 4c Pressing Projection 5 Suction Port 6 Paper Pack 7 Front Side Wall 7d Front Vertical Surface 9 Holder 9a Spring 9b Shaft Support 9c Operating Projection 10 Switch 11 Main Switch 12 Relay 12a Contact

Claims (3)

[Claims] 1. A vacuum cleaner main body is provided with a blower motor at a rear portion thereof, a front portion is provided with a dust collecting chamber having an upper surface opened, a lid body is connected to an upper portion of the dust collecting chamber and a suction hose is connected to a front side wall thereof. A guide extending in the up-and-down direction facing the front side walls on both sides of the suction port, and a holding body provided with an operating projection on the upper surface of the front side wall. The mouth frame of the paper pack to be stored in the dust collection chamber is detachably attached according to the above, and the mouth frame is held by the holding body. If the paper pack is not attached, the lid body is for operation. In an electric vacuum cleaner that does not completely close by hitting a protrusion, a switch that is opened and closed by opening and closing the lid is provided above the front side wall, and by inserting the switch in series into an electric circuit, Do not operate the blower motor if the pack is not installed. An electric vacuum cleaner characterized in that 2. The electric vacuum cleaner according to claim 1, wherein the switch is connected between a blower motor and a main switch that opens and closes a power source of the blower motor. 3. The switch is used for opening and closing a winding current of a relay, and the relay is connected between a blower motor and a main switch that opens and closes a power supply of the blower motor. The vacuum cleaner according to claim 1.