JPS5850920A - vacuum cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to airtightness of the mouth plate of a dust collection bag of a vacuum cleaner equipped with a removable dust collection bag.

Conventionally, vacuum cleaners equipped with removable dust collection bags have
The airtightness of the mouth plate of the dust collection bag attaching/detaching part and the dust collection bag attachment backing is an important tension. Replacing the dust bag.

At this time, due to the way the opening plate is attached, if the seal is not securely attached to the dust bag mounting gasket and negative pressure is applied inside the dust bag storage chamber, some dust will leak from the mounting area and be exhausted through the electric blower. there is a possibility.

In conventional vacuum cleaners equipped with a dust collection bag, there are those that are attached by pressing the surface of the opening plate and the surface of the dust collection bag mounting gasket with springs, etc., or those that are installed by pressing the surface of the opening plate and the surface of the dust collection bag mounting gasket, or those that are installed on the opening plate and have a round dust collection port that collects dust. Airtightness was achieved by fitting a gasket with the same diameter as the opening, but in the former case, the spring was not sufficiently compressed during installation, and if the opening plate was deformed, the surfaces could become airtight. The problem with the lid is that it doesn't fit well.As the latter has a flap in the diameter of the dust collection port of the dust collection bag and the opening plate is made of a thin plate, the problem is that the fitting area is small and airtightness cannot be maintained. was there. In addition, there are some cases in which a thin rubber sheet is pasted on the dust collection opening of the opening plate, and when it is fitted with the dust collection bag mounting gasket, the rubber sheet adheres to the gasket, etc., but this is not a disposable dust collection bag. It was expensive and inconvenient for users.

An object of the present invention is to eliminate the above-mentioned disadvantages and to provide a vacuum cleaner that is inexpensive and has a secure mounting structure in a single bag.

The present invention ensures airtightness between the mouth plate and the dust bag mounting gasket at the dust collection bag mounting portion by ensuring that their surfaces contact each other and by fitting the dust collection opening of the mouth plate with a tapered portion of the dust bag mounting gasket. To provide a hygienic vacuum cleaner with a structure that ensures airtightness of an attachment/detachment part and with less dust blowing out.

An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, a main body case 1 of this vacuum cleaner is equipped with an electric blower 2 and a paper dust collection bag 3.

The dust bag storage chamber 4 in which the dust bag 3 is stored has an opening at the top. A dust bag lid 5 that closes this opening is removably attached to the main body case 1.

The electric blower storage chamber 6 in which the electric blower 2 is stored is a first
As shown in Fig. 3, a mounting groove 8 is formed in the front part of the electric blower storage chamber 6 for inserting and attaching the sieve ventilation plate 7 of the electric blower 2 from above. .

An exhaust chamber 9 is provided at the rear of the electric blower storage chamber 6. An exhaust port 1o is provided at the rear of the exhaust chamber 9.

An electric blower storage chamber 6 communicates with the exhaust chamber 9 through an exhaust passage 11.

The cord reel 13 is attached to a cord reel storage chamber 14 provided adjacent to the electric blower storage chamber 6, as shown in FIGS. 2 and 3.

As shown in FIGS. 1 and 2, the electric box-like upper cover 24 is screwed to the main body case 1 so as to cover the electric blower 2 from above. Since the electric blower 2 stored in the electric blower storage chamber 6 is held down by the electric blower horizontal upper cover 24, fixing screws for the electric blower 2 and the like are not particularly required.

The main body case upper cover 25 is attached to the main body case l from above the electric blower upper cover 24, as shown in FIGS. 1 and 2. Cord reel 13 is also main body case upper cover 2
Covered with 5.

The electric blower upper cover 24 is made of plastic. This is necessary for insulatingly covering the electric blower 2. Electrical components such as a switch are attached to the upper surface of the electric blower upper cover 24. This is advantageous in terms of insulation since the motor upper cover 24 is made of plastic.

That is, the output changeover switch 26 is shown in FIG.

As shown in FIG. 2, the output changeover switch housing 27
It is attached to.

As shown in FIG. 2, a switch pedal 46 and a cord reel pedal 47 are attached to the main body case upper cover 25. The switch belt 46 and the cord reel storage chamber 47 are rotatable about the bin.

The switch petal 46 and the cord reel petal 47 are pushed upward by springs 48 and 49. For this reason, both petals 46 and 47 return to their original positions even if they are pressed down.

A main body case backing 52 is provided around the top surface of the main body case 1.
is installed. This is made of an elastic material such as soft vinyl chloride. Since the outer periphery of the main body case 1 and the outer periphery of the stain removal cleaner are almost surrounded by the main body case backing 52, the vacuum cleaner 4 will not be damaged by hitting furniture. Of course, the furniture will not be damaged either. Since the main body case backing 52 is interposed at the joint between the main body case 1 and the main body case upper cover 25, the appearance can be easily matched.

As shown in FIGS. 1, 2, and 3, the hose connection base 54 is attached to the front of the main body case 1. The suction port 55 of the main body case 1 is connected to the hose connection base 54. It communicates with the hole 56.

A dust collection bag attachment backing 57 is attached to the suction port 55. This dust collection bag attachment backing 57 is attached by fitting an annular groove formed on the outer periphery into the suction port 55. Since it is made of rubber, it is easy to install. The check valve 58 is integrally formed with the dust collection bag attachment backing 57.

As shown in FIG. 4, the dust collection bag attachment backing 57 has an attachment part 60 for the dust collection bag 3, a truncated conical part 601, and an annular protrusion 6.
0b. Here is the opening plate 6 of the dust collection bag 59.
The dust collection bag 59 is attached by fitting the dust collection port 61' formed in 1. Since the mounting portion 60 has a truncated conical shape, centering of the dust collection port 61' can be easily performed. Since the opening plate 61 comes into contact with the round annular projection 60b, sealing is ensured.

The mouth plate 61 is made of hard cardboard. This mouth plate 61 is
Dust collection bag stopper 6 shown in Figures 1, 2, 3, and 4
It can be stopped at 2. A locking step is formed on the outer periphery of the opening plate 61-. This is where the dust bag stopper 62 is hung.

The dust bag stopper 62 is made of steel wire.

The attachments at both ends are comprised of portions 63.63, helical portions 64.64, locking portions 65.65, and operating portions 66.

This dust collection bag stopper 62 has helical parts 64 and 64, so by pressing the operating part 66, the helical parts 64
41-The locking part 65°65 moves easily around the center. The dust collection bag 59 can be easily attached and removed.

As shown in FIGS. 2 and 3, the thyristor 77 is a power semiconductor of a control circuit to be described later.

This directly turns on the load current of electric blower 2.

Since it is turned off, it generates heat. Cooling fin 78
is the ninth one.

The thyristor 77 is placed between the protective ventilation plate 7 and the electric blower 2. The thyristor 77 is cooled by the air sucked into the electric blower 2.

The indicator 83 is attached to the dust bag lid 5 as shown in FIGS. 1 and 2. The inside of the dust bag lid 5 communicates with the indicator 83. When the pressure inside the dust collection bag storage chamber 4 changes, the display on the indicator 83 changes.

The indicator 83 is attached to the dust collection bag lid 5 by covering it with an indicator presser 83'.

As shown in FIG. 1, FIG. 2, and FIG. 96 are formed respectively.

The electric circuit of this vacuum cleaner is shown in FIG. In the drawings, the reference numerals corresponding to the previously explained parts are given, so a detailed explanation of the circuit will be omitted.

With the above structure, when installing the dust collection bag, even if the mounting position of the opening plate is slightly shifted, the inner diameter of the dust collection opening on the opening plate will fit into the truncated conical part 60M of the dust collection bag mounting gasket. Since the opening plate is corrected in the center and set in the normal position, and the flat part of the opening plate is pressed against the annular protrusion 60b, a double airtight means can be achieved, which reliably prevents dust from leaking. I can do that.

Further, since the opening plate and the dust bag mounting gasket can be constructed with a simple structure, an inexpensive device can be provided.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a vertical sectional view of the entire vacuum cleaner, Fig. 2 is an exploded perspective view of the entire vacuum cleaner, and Fig. 3 is the main body. FIG. 4 shows a dust collection bag, and FIG. 5 shows a circuit diagram.

Claims (1)

[Claims] 1. The front part of the main case where the electric blower was imploded has a dust collection bag storage chamber where the dust collection bag can be stored, and a dust collection bag mounting backing is attached to the suction port that sucks in Go ζ. A vacuum cleaner characterized in that the dust bag attachment part of the dust bag attachment backing has a shape that is a combination of a truncated cone shape and an annular protrusion.