JP3243809B2 - Electric vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a household vacuum cleaner.

[0002]

2. Description of the Related Art In a conventional vacuum cleaner, for example, as shown in FIG. 6, a switch pedal is fitted into an upper case from above. It is configured to lock to the case.

[0003]

In the structure of the prior art, when the switch pedal is forcibly detached, the locking members provided on both sides of the switch pedal are deformed inward, and the switch pedal is disengaged. However, there is a problem that the power switch is exposed, and the locking body of the switch pedal must be hardly deformed so that the switch pedal cannot be easily disengaged. In addition, an opening must be provided in the locking portion of the upper case where the locking body of the switch pedal is locked, so that a packing or the like for preventing exhaust of the electric blower from flowing out from the opening. There is a problem that new parts are required.

The present invention has been made in view of the above points, and has as its object to provide a switch pedal which is easy to assemble and which does not come off easily after assembling. It is to provide an inexpensive and safe vacuum cleaner which does not require any parts for the vacuum cleaner.

[0005]

In order to achieve the above object, a feature of the present invention is that an upper case is attached to a lower case.
A vacuum cleaner main body, which is provided and has an electric blower therein,
An electric blower disposed on a cleaner body and covering the electric blower
A cover disposed on the upper case;
To open and close the power switch to turn on and off the operation of the blower
A switch pedal, and a switch pedal provided integrally with the switch pedal.
And vertically in the opening formed in the upper case.
The upper case operates and locks with the opening edge of the upper case.
Locking body for restricting upward movement of the switch pedal
The electric blower cover is provided with the locking member on the upper case.
Prevent deformation in the direction away from the hook
Both are formed in a cylindrical shape so as to close the opening of the upper case.
That is, an improved deformation preventing body is provided.

[0006]

[Function] The lock body of the switch pedal is locked to the lock portion of the upper case while being covered by the deformation preventing body in the assembled state. Therefore, even if the switch pedal is forcibly removed, the lock body is not locked. It is not deformed and does not come off, and when attaching the switch pedal to the upper case, because it is separated from the lower case etc., the locking body of the switch pedal that is not regulated by the deformation preventing body easily deforms,
The switch pedal is easily attached to the upper case, and workability is good.

Further, since the opening of the engaging portion of the upper case is closed by the cylindrical deformation preventing body, the exhaust of the electric blower does not leak.

[0008]

1 to 3, a vacuum cleaner main body 1 has a lower case 2 made of a synthetic resin located below, a dust collecting cover 3 made of a synthetic resin located above, and an upper cover 2 made of a synthetic resin. The case 4 and a shock-absorbing bumper 5 provided on the outer periphery constitute an external part, in which an electric blower 6, a cord winding device 7, a dust collecting bag 8 and the like are incorporated. In lower case 2,
A caster 9 is provided at the front and wheels 10 are provided at the rear. A receiving portion 12 for holding a handle 11 and an extension tube (not shown) is integrally provided in front of the lower case 2. The upper case 4 is provided with a cleaning accessory storage body 13 at the front thereof, and further, at the rear thereof, an exhaust lid 14 which can be opened and closed freely and an exhaust filter 15 which can be taken out. As cleaning accessories, there are a tapered gap suction port 16 and a shelf suction port 18 to which a brush 17 is attached at the end.
In the accessory storage body 13 for cleaning, a suction port 16 for a gap and a suction port 18 for a shelf are stored. On the upper surface of the upper case 4, a switch pedal 20 for opening and closing a power switch 19 and a reel pedal 22 for operating the cord winding device 7 to stop are provided.

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

The lower case includes a dust collecting chamber 32 having an upper surface opening,
An electric blower storage chamber 48 having an upper surface opening is provided side by side.
Between the dust collecting chamber 32 and the electric blower storage chamber 48, there is a passage duct 3 for communicating the dust collection chamber 32 with the electric blower storage chamber 48.
3 are provided. The ventilation duct 33 is integrally formed when the lower case 2 is formed.

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

The electric blower 6 has front and rear anti-vibration rubbers 36 and 3.
7 and the electric blower cover 40, and are stored in the electric blower storage room 48. The anti-vibration rubber 36 is in close contact with the front wall 38 of the electric blower storage room. Ventilation duct 3
Reference numeral 3 denotes a cross section of the entrance of the dust collection chamber 32 on the front wall 38 of the electric blower chamber.
The electric blower 6 has a smaller cross-sectional area than the outlet cross-sectional area.
Is reduced from being transmitted to the dust collecting chamber 32 through the ventilation duct 33. The cord winding device 7 is housed in a cord storage room 39 provided adjacent to the electric blower storage room 48.

On the electric blower cover 40, a power switch 19 and an electronic control board 42 incorporating a slide volume are provided. A volume knob 43 for operating a 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 having an upper opening formed integrally with the upper surface of the ventilation duct 33. In the upper opening of the element storage chamber 21,
The fin cover 46 is hermetically attached by screws 47. At the bottom of the element storage chamber 21, a hole 48 that connects the inside of the ventilation duct 33 and the element storage chamber 21 is provided. 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 for accommodating cleaning accessories is formed between the dust collection chamber 32 and the electric blower storage chamber 48 together with the ventilation duct 33. In the space 51, the upper case 4
Is disposed so as to hang down. Above the cleaning accessory storage body 13 of the upper case 4,
When the upper opening of the dust collecting chamber 32 is closed by the dust collecting lid 8, it is covered by the dust collecting lid 8.

The airtightness between the dust collecting chamber 32 and the cleaning accessory housing 13 is determined by the partition wall provided on the dust collecting lid 3 when the upper opening of the dust collecting chamber 32 is closed by the dust collecting lid 8. 3a and dust collection chamber 32
And the packing 49 provided on the periphery of the upper surface opening. 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 configuration, when the power switch 19 is turned on, the wind flows from the dust collection chamber 32 through the ventilation duct 33 and the inside of the electric blower 6 to the electric blower storage chamber 4.
Emitted to 8. The exhaust flow from the electric blower 6 is discharged to the outside of the cleaner main body 1 through the exhaust filter 15 and the exhaust lid 14. At this time, the ventilation duct 33 allows the dust collecting chamber 3
2 and the electric blower storage chamber 48 are reliably airtight.

Switch pedal 20 and power switch 19
4 and 5, the switch pedal 20 is rotatable about 20a.
Mounted on The switch pedal 20 is elastically supported upward by a coil spring 60. The switch pedal 20, the engaging member 20d is is provided with integrally by engaging the upper <br/> case 4 is restricted to move upward. The electric blower cover 40 is provided such that the upper end of a cylindrical projection 40b serving as a deformation preventing body comes into contact with the lower surface of the upper case 4, and the locking body 20d and the projection 20b for opening and closing the power switch 19 operate. The opening for the is closed. The cylindrical projection 40b is divided into two rooms by a rib, one is a storage portion for the power switch 19, and the other is a portion into which the locking body 20d enters. Further, on the opposite side of the locking claw portion 20e of the engaging body 20d is provided with a re blanking member 20f, the distance between the inner wall and the rib member 20f of the cylindrical projection, the upper case 4 is retaining claw 20e engages The width of the switch pedal 20 is smaller than the width at which the switch pedal 20 is stopped.
Is not easily removed.

[0020]

According to the present invention, the locking member of the switch pedal is locked to the locking portion of the upper case while being covered by the deformation preventing member in the assembled state, so that the switch pedal is forcibly pressed. Even if you try to remove it, the locking body will not deform and come off, and when attaching the switch pedal to the upper case, it is separated from the lower case etc.
The locking body of the switch pedal that is not restricted by the deformation preventing body is easily deformed, the switch pedal is easily attached to the upper case, and the workability is good.

Further, the opening of the engaging portion of the upper case is closed by the cylindrical deformation preventing member, so that the exhaust of the electric blower does not leak.

As a result, a safe and inexpensive vacuum cleaner having improved assemblability can be obtained.

[Brief description of the drawings]

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

FIG. 2 is a longitudinal sectional view of a main part of the embodiment of the present invention, with a dust collection cover removed.

FIG. 3 is a longitudinal sectional view of a main part showing one embodiment of the present invention.

FIG. 4 is a sectional view taken along line AA of FIG. 2;

FIG. 5 is a sectional view taken along line BB of FIG. 2;

FIG. 6 is an exploded perspective view of a main part showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Vacuum cleaner main body, 2 ... Lower case, 3 ... Dust collection lid, 4 ... Upper case, 5 ... Bumper, 6 ... Electric blower, 13 ... Cleaning accessories 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 (storage space for accessories for cleaning).

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A47L 9/28 A47L 9/00

Claims (1)

(57) [Claims] 1. An upper case is arranged in a lower case, and an electric
A vacuum cleaner body in which a blower is installed, and
An electric blower cover for covering the electric blower,
And the operation of the electric blower is turned on and off.
A switch pedal for opening and closing the power switch to be performed;
The upper casing is provided integrally with the switch pedal.
Operate vertically in the opening formed in the
Engage with the opening edge of the case and above the switch pedal
A locking body for restricting the operation of the electric blower cover.
To prevent deformation in the direction away from the locking part.
A cylindrical shape is formed to cover the opening of the upper case.
An electric vacuum cleaner provided with a deformable body .