JPH05137683A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To achieve an opening or closing accurately of even an expensive small switch by providing a receiving part at the operation of a switch pedal mounted on an upper case near a pour source switch mounting part of a lower case. CONSTITUTION:A switch pedal 20 is mounted on an upper case 4 free to turn. A power source switch 19 is housed into a cylindrical protrusion 40b provided on an electric blower cover 40 while being grasped between the protrusion and the upper case 4. When the switch pedal 20 is operated, the moment the protrusion 20b provided on the switch pedal 20 opens or closes the power source switch 19, the upper end of the protrusion 40b abuts a rotary stopper 20c provided on the switch pedal 20. Even when a small switch limited in play stroke with a small opening/closing operation stroke is arranged, the switch pedal 20 performs an opening or closing operation to the position at which it abuts the upper end of the cylindrical protrusion 40b wrapping the power source switch 19 free from any deformation of the upper case 4 and the electric blower cover 40. This enables the opening or closing of the power source switch 19 accurately and there is no forcible force applied even the switch pedal 20 is operated by a foot.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to supporting an opening / closing operation of a switch pedal for opening / closing a power switch of an electric blower attached to an electric blower cover.

[0002]

2. Description of the Related Art In a conventional vacuum cleaner, for example, Japanese Patent Laid-Open No.
As described in Japanese Patent Laid-Open No. 58-50927, the switch pedal is rotatably attached to the upper case, and the power switch is also attached to the upper case. Further, the stopper when the switch pedal is stepped on is constructed in the upper case.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the configuration disclosed in the publication, the receiving portion of the switch pedal is composed of the upper case, so that even if the switch pedal attached to the upper case is operated by the foot, the power switch is not subjected to excessive force. There is. Therefore, if the upper case and the electric blower cover are deformed to some extent, the positional relationship between the switch pedal and the power switch changes.
For example, when the electric blower cover is deformed downward, the power switch attached to the electric blower cover also moves downward, but since the switch pedal is attached to the upper case and the opening / closing operation is restricted by the upper case, The switch pedal and the power switch are separated by the amount of deformation, and when the amount of deformation is larger than the amount of play of the power switch, the power switch cannot be opened and closed. Therefore, for the opening / closing stroke,
A switch with a large amount of play was required, which led to a larger power switch. There is also a problem that it is necessary to consider the dimensional accuracy of the electric blower cover and the upper case.

The present invention has been made in consideration of the above points, and an object of the present invention is to provide an electric vacuum cleaner capable of performing a reliable opening / closing operation even when an inexpensive small switch is provided. To do.

[0005]

In order to achieve the above object, a switch pedal is attached to an upper case, a power switch is arranged on an upper surface of an electric blower cover, and when the switch pedal is operated, the switch pedal is operated. The structure is supported by the electric blower cover instead of the upper case.

[0006]

The switch pedal is attached to the upper case, and the power switch is provided on the upper surface of the electric blower cover. Therefore, the wiring process is completed when the upper case is removed during assembly. The case is assembled without worrying about pinching the lead wire.

Further, when the switch pedal is operated, the switch pedal is structured to be supported by the electric blower cover. Can work. Therefore, even if the upper case or the electric blower cover is deformed, there is no risk of hindering the opening and closing of the power switch.

[0008]

1 to 3, a cleaner body 1 includes a lower case 2 made of synthetic resin located below it, a dust cover 3 made of synthetic resin located above and a synthetic resin top case. The case 4 and a shock-absorbing bumper 5 provided on the outer periphery form the outside, and the electric blower 6, the cord winding device 7, the dust collecting bag 8 and the like are incorporated inside. In lower case 2,
The casters 9 are provided in front of the wheels, and the wheels 10 are provided in the back. In front of the lower case 2, a handle 11 and a receiving portion 12 for holding an extension pipe (not shown) are integrally provided. The upper case 4 is provided with a cleaning accessory storage body 13 in the front thereof, and further, an openable / closable exhaust lid 14 and a removable exhaust filter 15 are provided in the rear thereof. As cleaning accessories, there are a tapered suction hole 16 and a shelf suction hole 18 to which a brush 17 is attached at the tip.
A gap suction port 16 and a shelf suction port 18 are stored in the cleaning accessory storage body 13. A switch pedal 20 that opens and closes the power switch 19 and a reel pedal 22 that operates to stop the cord winding device 7 are provided on the upper surface of the upper case 4.

A locking projection 23 is integrally formed on the front side of the dust collecting lid 3 for inserting into the locking hole 50 of the body case 2, and a clamp 24 for opening and closing is mounted on the rear side thereof. ing. An insertion port 25 for a hose (not shown) is provided on the upper surface of the dust collection lid 3, and the hose insertion port 2
A hose joint clamp (not shown) is rotatably locked in the inner peripheral groove 26 of the shaft 5. A lid packing 2 for keeping airtight between the inserted hose, joint (not shown) and dust collecting part.
7 is attached to the dust collecting lid 3 by the dust collecting inner lid 28. The lid packing 27 also serves to maintain airtightness between the dust collecting lid 3 and the mouth plate 8 a of the dust collecting bag 8. The dust collecting bag 8 is held by a holding rib 29 and a filter base 30 provided on the body case 2. The dust collecting lid 3 holds a dust indicator 31 for notifying the dust disposal time by the dust collecting inner lid 28.

In the lower case, a dust collecting chamber 32 having an upper surface opening,
An electric blower housing chamber 48 having an upper surface opening is provided side by side.
Between the dust collection chamber 32 and the electric blower storage chamber 48, the common duct 3 that connects the dust collection chamber 32 and the electric blower storage chamber 48 to each other.
3 is provided. The ventilation duct 33 is integrally formed when the lower case 2 is formed.

A protection rib 34 and a secondary filter 35 are provided on the dust collection chamber 32 side of the ventilation duct 33.

The electric blower 6 has front and rear anti-vibration rubbers 36, 3
7 and the electric blower cover 40, and is stored in the electric blower storage chamber 48. The anti-vibration rubber 36 is brought into close contact with the electric blower storage chamber front wall 38. Ventilation duct 3
3 is a front wall 38 of the electric blower room with an inlet cross-sectional area on the dust collection room 32 side
The electric blower 6 has a sectional area smaller than the outlet sectional area of
The generated noise is reduced from being transmitted to the dust collection chamber 32 through the ventilation duct 33. The cord winding device 7 is stored in a cord storage chamber 39 provided adjacent to the electric blower storage chamber 48.

On the electric blower cover 40, a power switch 19 and an electronic control board 42 incorporating a slide volume are installed. A volume knob 43 for operating the slide volume of the electronic control board 42 is slidably attached to the upper case 4.

The semiconductor switching element 44 is housed in the element housing chamber 21 which is integrally formed on the upper surface of the ventilation duct 33 and has an upper surface opening. At the top opening of the element storage chamber 21,
The fin cover 46 is hermetically attached by the screw 47. A hole 48 that connects the inside of the ventilation duct 33 and the inside of the element storage chamber 21 is provided at the bottom of the element storage chamber 21. The bumper 5 has a shape surrounding the dust collection chamber 32 of the lower case 2 and is attached to the lower case 2 side.

A space 51 is formed between the dust collection chamber 32 and the electric blower storage chamber 48 together with the ventilation duct 33 to store cleaning accessories. In the space 51, the upper case 4
The accessory storage unit 13 for cleaning is disposed so as to hang down. Above the accessory housing 13 for cleaning the upper case 4,
When the upper surface opening of the dust collection chamber 32 is closed by the dust collection lid 8, the dust collection lid 8 covers it.

The airtightness between the dust collection chamber 32 side and the cleaning accessory storage 13 side is such that the partition wall provided on the dust collection lid 3 when the upper opening of the dust collection chamber 32 is closed by the dust collection lid 8. 3a and dust collecting chamber 32
It is held by the packing 49 provided on the peripheral edge of the upper surface of the. The packing 49 is formed integrally with the bumper 5c.

An exhaust window 40a is formed in a part of the electric blower cover 40.

In the above structure, the flow of air when the power switch 19 is turned on passes from the dust collection chamber 32 through the ventilation duct 33, the inside of the electric blower 6, and the electric blower storage chamber 4
Emitted to 8. The exhaust flow from the electric blower 6 passes through the exhaust filter 15 and the exhaust cover 14 and is discharged to the outside of the rejector main body 1. At that time, the dust collection chamber 3 is provided by the ventilation duct 33.
The airtightness between 2 and the electric blower housing chamber 48 is ensured.

Switch pedal 20 and power switch 19
Are arranged as shown in FIGS. 4 and 5, and the switch pedal 20 is rotatable about the upper case 20a.
Installed on. The switch pedal 20 is elastically supported upward by a coil spring 60. The power switch 19 is a cylindrical protrusion 40b provided on the electric blower cover 40.
And is held between the upper case 4 and the upper case 4. FIG. 5 shows a state where the switch pedal 20 is operated. At the same time when the protrusion 20b provided on the switch pedal 20 opens and closes the power switch 19, the upper end of the protrusion 40b is a rotation stopper provided on the switch pedal 20. 20c
Is configured to abut.

[0020]

According to the present invention, since the switch pedal is attached to the upper case and the power switch is arranged on the upper surface of the electric blower cover, the wiring process is performed in the state where the upper case is removed at the time of assembly. When the upper case is assembled, there is no need to worry about pinching the lead wire with the case, and the assembly work is easy. In addition, when the switch pedal is operated, the switch pedal is supported by the electric blower cover, so even if a small switch with a small opening / closing stroke and a small play stroke is installed, the upper case and the electric blower cover will not be deformed. Regardless of, the switch pedal can be opened and closed to the position where it abuts the upper end of the cylindrical protrusion that surrounds the power switch, so that the power switch can be opened and closed securely and at the upper end of the cylindrical protrusion that surrounds the power switch. Since the switch pedal is supported, even if the switch pedal is operated with the foot, the power switch is not subjected to excessive force.

Thus, a compact and inexpensive switch can be arranged without degrading the assembling property, and an electric vacuum cleaner can be provided which can perform a reliable and safe opening / closing operation regardless of the deformation of the case.

Further, since the power switch is housed and disposed so as to be surrounded by the cylindrical projection, the exhaust air of the electric blower does not pass to the power switch, so that the problem of insulation resistance lowering due to carbon adhesion does not occur.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part showing an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of an essential part of the embodiment of the present invention with a dust collecting lid removed.

FIG. 3 is a longitudinal sectional view of an essential part showing an embodiment of the present invention.

4 is a sectional view taken along line AA of FIG.

FIG. 5 is a cross-sectional view of a state in which a pedal is operated.

[Explanation of Codes] 1 ... Vacuum cleaner body, 2 ... Lower case, 3 ... Dust cover, 4 ... Upper case, 5 ... Bumper, 6 ... Electric blower, 13 ... Cleaning accessory storage body, 13 ... Locking protrusion , 24 ... Clamp, 32 ...
Dust collection chamber, 33 ... Ventilation duct, 44 ... Semiconductor switching element, 48 ... Electric blower storage chamber, 49 ... Packing, 5
0 ... Locking hole, 51 ... Space (space for storing accessories for cleaning).

Claims (3)

[Claims] 1. A main body case that houses an electric blower is divided into an upper case and a lower case, a switch pedal for opening and closing a power switch is attached to the upper case side, and the power switch is provided on the lower case side. The vacuum cleaner according to claim 1, wherein a receiving portion when the switch pedal is operated is provided near the power switch mounting portion of the lower case. 2. The electric cleaning according to claim 1, wherein the power switch is housed and attached to a substantially cylindrical holding portion provided in the lower case, and an upper end of the substantially cylindrical holding portion serves as the receiving portion. Machine. 3. The electric vacuum cleaner according to claim 1, wherein the substantially tubular holding portion is integrally formed with an electric blower cover that holds down the electric blower.