JPH04322626A - Electric vacuum cleaner - Google Patents

Abstract

PURPOSE:To keep air tightness between the dust collecting chamber and the containing chamber of electric fan with a simple structure by forming an air duct connecting the dust collecting chamber to the containing chamber of motor driven fan to be a unit as a vacuum cleaner body. CONSTITUTION:An air duct 33 connecting a dust collecting chamber 32 to a motor driven fan chamber 48 is provided therebetween. The air duct 33 is made as a unit when molding the lower case 2. And a space 51 containing fittings for cleaning together with the air duct 33 is formed between the dust collecting chamber 32 and the motor driven fan chamber 48 to arrange so that the container 13 of the fittings for cleaner of the upper case 4 is suspended. The air tightness of the dust collecting chamber 32 side against the container 13 side of fittings for cleaning is kept by the packing 49 provided at the peripheral edge of the upper opening of the partition wall 3a equipped at the dust collector cover 3 and the dust collecting chamber 32, when the upper opening of the dust collecting chamber 32 is closed by the cover 3.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner having a dust collection chamber and an electric blower storage chamber arranged side by side.

0002

BACKGROUND OF THE INVENTION Conventional vacuum cleaners, for example, as described in Japanese Patent Application Laid-Open No. 58-50923,
The airtightness between the dust collection chamber and the electric blower storage chamber is achieved by butt-fitting the ribs of the main case and the upper case, and
In some areas, unevenness is formed on the abutting surfaces of the ribs to provide an airtight reinforcement structure, or in some areas, seal packing such as maltplane is attached to the abutting surfaces of the ribs.

[0003] Furthermore, in conventional vacuum cleaners, for example,
As described in Japanese Unexamined Patent Application Publication No. 61-209626, a storage area for an accessory suction opening for cleaning is formed at the rear of the electric blower storage chamber, and an opening/closing lid is attached above the storage area for the accessory suction opening for cleaning. ing.

0004

[Problem to be solved by the invention] Said Japanese Unexamined Patent Publication No. 58-50
In the configuration described in Publication No. 923, when the main case or the upper case is deformed, a gap is created between the abutting surfaces of the ribs, so it is not possible to provide sufficient airtightness between the dust collection chamber and the electric blower storage chamber. Furthermore, if the tip of the rib is provided with an uneven shape, the precision of the mold needs to be improved, which increases the cost of the mold, and requires careful attention when assembling the parts, which requires additional work time. was there.

[0005] Furthermore, in the configuration described in JP-A No. 61-209626, since a cleaning accessory storage section is installed in the exhaust flow path, there are problems such as preventing exhaust gas from going around and complicating the mold structure. At the same time, it was necessary to provide an opening/closing lid to cover the cleaning accessory storage section, separate from the dust collection lid of the dust collection chamber.

The first object of the present invention is to improve the airtightness of the dust collection chamber and the electric blower storage chamber in view of the problems of the prior art.
To provide a vacuum cleaner that can be reliably secured with a simple structure.

Furthermore, a second object of the present invention is to
In addition to the above object, it is an object of the present invention to provide a vacuum cleaner that can consolidate parts and suppress an increase in the number of parts required for airtightness.

[0008]

[Means for Solving the Problems] The first object is to integrally mold a ventilation duct that communicates a dust collection chamber that collects dust with an electric blower storage chamber that houses an electric blower into the main body of the vacuum cleaner. This is achieved by:

The second object is to provide a ventilation duct and a cleaning accessories storage space between the dust collection chamber and the electric blower storage chamber with an opening on the top surface, which communicate the dust collection chamber and the electric blower storage chamber. This is accomplished by covering the ventilation duct and the cleaning accessory storage space with a dust collection lid that covers the upper surface opening.

0010

[Function] The ventilation duct that communicates the dust collection chamber and the electric blower storage chamber is integrally molded with the vacuum cleaner body, so the communication between the dust collection chamber and the electric blower storage chamber can be established without increasing the number of parts. , is done without leaking airflow.

Furthermore, since the dust collection lid that covers the top opening of the dust collection lid also serves as a lid that covers the upper part of the cleaning accessories storage space, the lid that covers the upper part of the cleaning accessories storage space can be used as a lid for covering the upper part of the cleaning accessories storage space. There is no need to manufacture the dust collection lid separately from the dust collection lid that covers the top opening, and parts can be consolidated, assembly steps can be eliminated, and mold costs can be reduced.

0012

[Embodiment] In FIGS. 1 to 3, a vacuum cleaner body 1 includes a lower case 2 made of synthetic resin located below, a dust collection lid 3 made of synthetic resin located above, and an upper case made of synthetic resin. The exterior is constituted by the case 4 and a shock-absorbing bumper 5 provided on the outer periphery, and the interior includes an electric blower 6, a cord winding device 7, a dust collection bag 8, etc. In the lower case 2,
It has casters 9 in front and wheels 10 in its rear. At the front of the lower case 2, a handle 11 and a receiving part 12 for holding an extension tube (not shown) are integrally provided. The upper case 4 is provided with a cleaning accessory storage body 13 at the front thereof, and an exhaust cover 14 which can be opened and closed and an exhaust filter 15 which can be taken out at the rear. Cleaning accessories include a tapered gap suction mouth 16 and a shelf suction mouth 18 having a brush 17 attached to its tip. A gap suction port 16 and a shelf suction port 18 are housed in the cleaning accessory storage body 13. A switch pedal 20 for opening and closing the power switch 19 and a reel pedal 22 for stopping the cord winding device 7 are provided on the upper surface of the upper case 4.

A locking protrusion 23 is integrally formed at the front of the dust collection lid 3 to be inserted into and engaged with the locking hole 50 of the main body case 2, and a clamp 24 for opening and closing is attached to the rear. ing. A hose (not shown) insertion port 25 is provided on the top surface of the dust collection lid 3.
A clamp (not shown) of a hose joint is rotatably locked in the inner circumferential groove 26 of 5. Lid packing 2 that maintains airtightness between the inserted hose and fitting (not shown) and the dust collection section
7 is a dust collection inner lid 28 attached to the dust collection lid 3. The lid packing 27 also serves to maintain airtightness between the dust collection lid 3 and the opening plate 8a of the dust collection bag 8. The dust collection bag 8 is held by a holding rib 29 provided on the main body case 2 and a filter stand 30. On the dust collection lid 3, a dust indicator 31 is held by the dust collection inner lid 28 to notify when it is time to throw away the garbage.

[0014] The lower case includes a dust collection chamber 32 with an opening at the top;
An electric blower storage chamber 48 with an open top is arranged in parallel. A ventilation duct 3 is provided between the dust collection chamber 32 and the electric blower storage chamber 48, which communicates the dust collection chamber 32 and the electric blower storage chamber 48.
3 is provided. The ventilation duct 33 is integrally molded when the lower case 2 is molded.

A protective 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 anti-vibration rubber 36, 3 at the front and rear.
7 and an electric blower cover 40, and is stored in an electric blower storage chamber 48. The vibration isolating rubber 36 is brought into close contact with the front wall 38 of the electric blower storage chamber. Ventilation duct 3
3, the inlet cross-sectional area on the dust collection chamber 32 side is the front wall 38 of the electric blower chamber.
The electric blower 6 has a cross-sectional area smaller than the outlet cross-sectional area of
This reduces the transmission of generated noise 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.

An electronic control board 42 incorporating a slide volume is installed on the electric blower cover 40. A volume knob 43 for operating a slide volume of an electronic control board 42 is slidably attached to the upper case 4.

The semiconductor switching element 44 is housed in the element storage chamber 21 which is formed integrally with the upper surface of the ventilation duct 33 and has an opening on the top surface. In the upper opening of the element storage chamber 21,
A fin cover 46 is attached airtight with screws 47. A hole 48 is provided at the bottom of the element storage chamber 21 to communicate the inside of the ventilation duct 33 and the inside of the element storage chamber 21 . The bumper 5 has a shape that surrounds 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 for storing cleaning accessories together with the ventilation duct 33. In the space 51, the upper case 4
A cleaning accessory storage body 13 is arranged so as to hang down. Above the cleaning accessory storage body 13 of the upper case 4,
When the upper surface opening of the dust collection chamber 32 is closed with the dust collection lid 8, it is covered by the dust collection lid 8.

Airtightness between the dust collection chamber 32 side and the cleaning accessory storage body 13 side is achieved by a partition wall provided on the dust collection lid 3 when the top opening of the dust collection chamber 32 is closed with the dust collection lid 8. 3a and dust collection chamber 32
It is held by a packing 49 provided at the periphery of the upper opening. The packing 49 is formed integrally with the bumper 5c.

As shown in FIGS. 4 and 5, the cross-sectional shape of the ventilation duct 33 is such that the lower surface is a curved surface, and the other portions, that is, the upper surface and both side surfaces are flat. The length of the ventilation duct 33 is set such that a movable mold for forming the ventilation duct 33 can be pulled out into the electric blower storage chamber 48 . The lower surface of the ventilation duct 33 is set at a higher position than the bottom surface of the lower case 2, as shown in FIG. As a result, a recess 1a is formed in the lower case 2, as shown in FIG.

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

In the above configuration, when the power switch 19 is turned on, the air flows from the dust collection chamber 32 through the ventilation duct 33, through the electric blower 6, and into the electric blower storage chamber 4.
Released at 8. The exhaust flow from the electric blower 6 passes through the exhaust filter 15 and the exhaust lid 14 and is discharged to the outside of the remover main body 1. At that time, the dust collection chamber 3
2 and the electric blower storage chamber 48 are reliably airtight.

[0024]

[Effects of the Invention] According to the present invention, the ventilation duct that communicates the dust collection chamber and the electric blower storage chamber is integrally molded with the vacuum cleaner body, so that the airtightness between the dust collection chamber and the electric blower storage chamber is maintained. ,
To obtain a vacuum cleaner that can be securely held without having a complicated structure.

Furthermore, according to the present invention, the accessory storage space for cleaning is formed between the dust collection chamber and the electric blower storage chamber, so that the dust collection lid covering the opening of the dust collection chamber serves as the accessory storage space for cleaning. It becomes possible to double the role of a lid covering the top of the vacuum cleaner, and a vacuum cleaner with fewer parts and fewer assembly steps can be obtained.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional view of a main part showing an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of a main part of an embodiment of the present invention with a dust collection lid removed.

FIG. 3 is a cross-sectional view of a main part showing an embodiment of the present invention.

FIG. 4 is a sectional view taken along line AB in FIG. 1;

FIG. 5 is a sectional view taken along line CD in FIG. 1;

[Explanation of symbols]

1...Vacuum cleaner body, 2...Lower case, 3...Dust collection lid, 4...Upper case, 5...Bumper, 6...Electric blower, 13...Cleaning accessory storage body, 23...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 (cleaning accessory storage space).

Claims (12)

[Claims] 1. A vacuum cleaner having a vacuum cleaner body in which a dust collection chamber for collecting dust and an electric blower storage chamber containing a built-in electric blower are arranged side by side, wherein the dust collection chamber and the electric blower storage chamber have a built-in electric blower. A vacuum cleaner characterized in that a ventilation duct that communicates with the vacuum cleaner body is integrally formed with the vacuum cleaner body. 2. A lower case in which at least a dust collection chamber with a top opening and an electric blower storage chamber with a top opening are arranged side by side, a dust collection lid that covers the top opening of the dust collection chamber, and a top opening of the electric blower storage chamber. In the vacuum cleaner in which a vacuum cleaner main body is formed from an upper case that covers a vacuum cleaner, a ventilation duct is provided between the dust collection chamber and the electric blower storage chamber, the ventilation duct communicating between the dust collection chamber and the electric blower storage chamber. A vacuum cleaner characterized in that the ventilation duct is integrally molded with the lower case. 3. The vacuum cleaner according to claim 1, wherein the ventilation duct has an inlet opening area on the dust collection chamber side set smaller than an outlet opening area on the electric blower storage chamber side. 4. The electric blower according to claim 3, wherein a semiconductor switching element for controlling power consumption of the electric blower provided in the electric blower storage chamber is cooled by airflow in the ventilation duct. vacuum cleaner. 5. The vacuum cleaner according to claim 2, wherein the lower surface of the ventilation duct is higher than the bottom surface of the lower case. 6. The vacuum cleaner according to claim 4, wherein the cross-sectional shape of the ventilation duct is a curved surface at least at a lower surface portion. 7. The length of the ventilation duct is set such that a movable mold for forming the ventilation duct can be pulled out into the electric blower storage chamber. vacuum cleaner. 8. A ventilation duct that communicates the dust collection chamber and the electric blower storage chamber and a cleaning accessory storage space are formed between the dust collection chamber and the electric blower storage chamber having an opening on the top surface, and a cleaning accessory storage space is formed in the top surface. A vacuum cleaner in which the ventilation duct and the cleaning accessory storage space are covered above with a dust collection lid that covers the opening. 9. At least a lower case in which a dust collection chamber with a top opening and an electric blower storage chamber with a top opening are arranged side by side, a dust collection lid that covers the top opening of the dust collection chamber, and a top opening of the electric blower storage chamber. In the vacuum cleaner in which a vacuum cleaner main body is formed from an upper case that covers a vacuum cleaner, a ventilation duct is provided between the dust collection chamber and the electric blower storage chamber, the ventilation duct communicating between the dust collection chamber and the electric blower storage chamber. and a vacuum cleaner that forms a space for storing cleaning accessories, and covers an upper surface opening of the dust collection chamber, the ventilation duct, and the upper part of the space with the dust collection lid. 10. A cleaning accessory storage body that hangs down in the space is formed integrally with the upper case, and the dust collection lid provides airtightness between the cleaning accessory storage body side and the dust collection chamber side. 10. The vacuum cleaner according to claim 9, wherein the vacuum cleaner is held by a partition wall provided and a packing provided around the upper opening of the dust collection chamber. 11. The vacuum cleaner according to claim 10, wherein the packing is integrally formed with a bumper provided on the outer periphery of the vacuum cleaner body. 12. The vacuum cleaner main body is provided with a locking hole into which a locking protrusion provided on the dust collection lid is locked, and the upper case is locked with a clamp provided on the dust collection lid. The vacuum cleaner according to claim 9, further comprising a locking hole.