JP2003164396A - Electric vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric vacuum cleaner in which the tension of a belt for driving a rotating brush is stabilized, the durability of the belt is improved, an operability is stable and a utility is high. <P>SOLUTION: The electric vacuum cleaner includes an inlet port 20 for sucking dust, the rotating brush 25 for scraping up the dust and a suction chamber 28 having a motor 26 for driving the rotating brush 25 through the belt 27 in the lower part of a cleaner body 15. The suction chamber can be lifted and lowered relative to the cleaner body 15 to stabilize the operability, the tension of the belt 27 for driving the rotating brush 25 and improve the durability of the belt 27. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner used at home.

[0002]

2. Description of the Related Art Electric vacuum cleaners of this type have hitherto been disclosed in Japanese Utility Model No. 59.
Those described in -70651 were common.

As shown in FIG. 6, there is a cleaner body 3 having a dust collecting chamber 1 in the upper part and an electric blower 2 in the lower part, and a suction chamber 4 is provided in the lower part of the cleaner body 3. ing. A suction port 5 is formed in the suction chamber 4, and a rotary brush 6 is arranged above the suction port 5, and the rotary brush 6 is
The outer periphery of the rotary brush 6 and the shaft 7 of the electric blower 2 are connected by a belt 8 to rotate the rotary brush 6. Reference numeral 9 is a traveling wheel of the cleaner body 3, and 11 is a cleaner body 3.
By moving the up-and-down moving wheel 11 up and down by operating the appearing / retracting switching pedal 10, the distance between the suction chamber 4 and the surface to be cleaned can be adjusted, and the type of surface to be cleaned can be adjusted. The operability of the suction chamber 4 can be varied by adjusting the distance between the suction chamber 4 and the surface to be cleaned.

[0004]

However, in the above configuration, when the user cleans, the operator operates the retractable selector pedal 10 to adjust the distance between the suction chamber 4 and the surface to be cleaned depending on the type of the surface to be cleaned. However, since the distance between the shaft 7 of the electric blower 2 and the rotating brush 6 is large, the tension of the belt 8 is likely to change, and the durability of the belt 8 has a problem.

Therefore, the present invention solves the above-mentioned problems by stabilizing the tension of a belt for driving a rotating brush,
An object of the present invention is to provide an electric vacuum cleaner having improved belt durability and stable operability and high usability.

[0006]

In order to achieve the above object, the present invention provides a cleaner body having an electric blower for generating suction air, a dust collecting chamber for collecting sucked dust, and a lower portion of the cleaner body. And a suction chamber having a suction port for sucking dust, a rotating brush for scraping up the dust, and an electric motor for driving the rotating brush via a belt, and the suction chamber can be moved up and down with respect to the cleaner body. The operability can be stabilized by enabling the suction chamber to move up and down according to the type of surface to be cleaned, and the distance between the rotating brush and the electric motor can be reduced, and the tension of the belt that drives the rotating brush can be reduced. Is stable and the durability of the belt can be improved.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is
A vacuum cleaner body having an electric blower that emits suction air and a dust collection chamber that collects sucked dust, and below the vacuum cleaner body,
A suction chamber for sucking dust, a rotating brush for scraping up the dust, and a suction chamber having an electric motor for driving the rotating brush via a belt, wherein the suction chamber can be moved up and down with respect to the cleaner body, By allowing the suction chamber to move up and down according to the type of surface to be cleaned, the operability can be stabilized, the distance between the rotating brush and the electric motor can be reduced, and the tension of the belt that drives the rotating brush is stable. Then
The durability of the belt can be improved.

According to a second aspect of the present invention, a communication passage that connects the suction port of the suction chamber and the dust collection chamber is provided, and a sealing material is provided at a connection portion between the suction chamber and the communication passage. Thus, the degree of vacuum in the suction chamber is increased, dust leakage can be reduced, and an optimum suction state can be obtained.

[0009]

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

(Embodiment 1) FIG. 1 is a partial sectional side view of an electric vacuum cleaner according to a first embodiment of the present invention, FIG. 2 is a top view, and FIG.
4 is a partially enlarged view of the electric vacuum cleaner, FIG. 4 is an enlarged view of the operation of the suction portion of the electric vacuum cleaner, and FIG. 5 is a partially enlarged sectional view of the suction chamber and the communication passage portion.

Reference numeral 15 denotes a paper bag 17 for accumulating dust attached to the dust collection chamber 16 and an electric blower 1 for emitting suction air.
It is the main body of the vacuum cleaner with built-in 8. The paper bag 17 can be replaced by attaching and detaching the lid 19. A suction port 20 for sucking dust on the surface to be cleaned is provided below the cleaner body 17.
The suction part 21 having is connected. A retractable hose 22 communicating with the dust collection chamber 16 is connected to the rear surface of the dust collection chamber 16, and a communication passage 23 is connected to the other end of the dust collection chamber 16.
The other end of 3 communicates with the suction port 20 provided in the suction section 21. The suction part 21 is provided so as to be rotatable about a rotation support shaft 24 formed at a lower portion of the cleaner body 15 as a starting point.
At the upper part of the suction port 20, a rotary brush 2 for scraping up dust
5 is arranged, and 26 is an electric motor for driving the rotary brush 25. A belt 27 is interposed to transmit the driving force of the electric motor 26 to the rotary brush 25. The belt 27 is configured in the suction chamber 28.

A suction chamber 28 located in front of the suction portion 21.
Is separated from the suction part 21 by the side wall 29,
A T-shaped rib 30 is provided in the. A recess 31 that covers the T-shaped rib 30 is provided in the wall 31 of the suction portion 21 located on the relative surface of the side wall 29, and the suction chamber 28 is
It is configured to slide up and down.

Numeral 33 is a knob for retracting the suction chamber 28, which is formed in a substantially arc shape. The knob 33 is locked to the upper surface of the suction portion 21 with a screw 34 or the like and is rotatable. A gear 35 is arranged on the outer periphery of the lower surface of the knob 33, and a sliding plate 37 on which a rack 36 is arranged is provided at a position relative to the gear 35. The sliding plate 37 is held by the guide ribs 38 from the lower part of the suction section 21. The sliding plate 37 is interlocked with the gear 35 by rotating the knob 33, and
Is configured to be slidable in the left-right direction.

The sliding plate 37 is provided with an oblong hole 39 having an oblique angle, and a side wall 29 of the suction chamber 28 is provided with a substantially arcuate pin 40 so as to be inserted into the oblong hole 39. Has been done.

With the above structure, when the knob 33 is rotated, the pin 40, which is interlocked with the gear 35, slides the sliding plate 37 in the left-right direction, and is provided on the side wall 29 of the suction chamber 28, The suction chamber 28 is connected to the long hole 39 provided in the sliding plate 37 so that the suction chamber 28 can be retracted and retracted.
It is possible to arrange the suction port 20 at an optimum position depending on the type of the surface to be cleaned such as tatami mat, jutan, and the like, and the distance between the surface to be cleaned and the suction port 20 is horizontal and the optimum suction state does not affect the suction performance. Obtainable. Further, even if the suction chamber 28 is moved up and down, the tension of the belt 27 that drives the rotating brush 25 is always constant, and the durability of the belt 27 can be improved.

At the same time, the rotary brush 25 can be moved up and down, and by raising and lowering the rotary brush 25 depending on the type of the surface to be cleaned, it is possible to eliminate scratches on the surface to be cleaned by the rotary brush 25.

Further, referring to FIGS. 2 and 5, the suction chamber 28
A sealing member 42 having elasticity is provided at a connection portion 41 with the communication passage 23 formed of a pipe that communicates with the dust collection chamber 16. With this structure, the airtightness of the suction chamber 28 and the connection portion 41 with the communication passage 23 is improved, the degree of vacuum of the suction chamber 28 is increased, and an optimum suction state can be obtained.

[0018]

According to the present invention, it is possible to provide an electric vacuum cleaner that stabilizes the tension of the belt that drives the rotating brush, improves the durability of the belt, and has stable operability and high usability.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view of an electric vacuum cleaner showing a first embodiment of the present invention.

FIG. 2 is a partial plan view of the electric vacuum cleaner.

FIG. 3 is a partially enlarged view of the electric vacuum cleaner.

FIG. 4 is an enlarged view of the operation of the suction chamber of the electric vacuum cleaner.

FIG. 5 is an enlarged partial cross-sectional view of a suction chamber and a communication passage of the vacuum cleaner.

FIG. 6 is an overall side view of a conventional electric vacuum cleaner.

[Explanation of symbols]

15 Vacuum cleaner body 16 Dust collection chamber 18 electric blower 21 Suction part 23 communication passage 25 rotating brush 26 electric motor 27 belts 28 Suction chamber 42 Seal material

Claims (2)

[Claims] 1. A vacuum cleaner body having an electric blower for generating suction air, a dust collection chamber for collecting the sucked dust, and a suction brush for sucking the dust and a rotary brush for scraping up the dust below the cleaner body. And a suction chamber having an electric motor that drives the rotating brush via a belt, and the suction chamber can be moved up and down with respect to the cleaner body. 2. The electric vacuum cleaner according to claim 1, wherein a communication passage that connects the suction port of the suction chamber and the dust collection chamber is provided, and a sealing material is provided at a connection portion between the suction chamber and the communication passage.