JP2002223996A - Sucking tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a round brush for improving a cleaning effect. SOLUTION: A sucking tool 1 is provide with a cylindrical case body 3 where a sucking opening 2 for sucking dust is formed at a tip. In the too, a rotary brush 10 having an axial-flow fan 12 rotated by air which is sucked from the sucking opening 2 and having a brush 13 which is disposed at the tip end part of a blade 12F in the fan 12 is arranged freely rotatably and freely attachably/detachably in a shaft 30 which is arranged on an axial line inside the case body 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction tool connected to a suction-side air passage of a vacuum cleaner.

[0002]

2. Description of the Related Art Conventionally, a vacuum cleaner is provided with a dust collecting chamber at a front portion of a main body of the vacuum cleaner, and a suction blower is applied to the dust collecting chamber by an electric blower provided at a rear portion of the main body of the vacuum cleaner. ,
In some cases, a hand operation pipe is provided at a distal end of a dust collection hose connected to a dust collection chamber, and a suction tool such as a suction port body is connected to the hand operation pipe via an extension pipe.

In this vacuum cleaner, when an electric blower is operated to apply a suction negative pressure to a dust collection chamber, dust on a cleaning surface sucked into the suction port together with air is drawn into an extension pipe, a hand-operated pipe, and a dust collection hose. The dust is sucked into the dust collection chamber through the dust collection chamber, and the sucked dust is collected by the dust collection filter in the dust collection chamber.

[0004] Such a vacuum cleaner is usually provided with a vine port for cleaning a narrow place, and a suction tool such as a round brush for cleaning dust and the like attached to a window bar or a screen door as accessories. Usually, the attached suction tool can be used in exchange for the above-described suction port.

Some of the above-mentioned suction port bodies are provided with a rotary brush whose axis extends left and right and is orthogonal to the suction direction. The rotary brush includes an electric rotary brush driven by a motor, an air-type rotary brush rotated by suction air, and the like.

[0006]

However, when cleaning dust adhering to the screen door with a round brush, the dust is hardly dropped because it is fixed to the mesh. It is conceivable to provide a rotating brush for such a round brush to improve the cleaning effect of the round brush.

However, since the rotary brush used in the conventional suction port body is provided in a direction in which the axis is orthogonal to the suction direction, the structure of the conventional rotary brush cannot be applied to a suction tool such as a round brush as it is. Met.

Accordingly, an object of the present invention is to provide a suction tool that can improve the cleaning effect.

[0009]

In order to achieve the above object, an invention according to claim 1 is a suction tool provided with a brush body having a suction opening for sucking dust at a tip thereof, wherein suction is performed from the suction opening. A rotating brush having an axial fan that obtains a rotational force by air to be applied and a brush provided at the tip of the blade of the axial fan is rotatable about an axis substantially perpendicular to the surface of the suction opening. It is characterized by being provided detachably.

The invention according to claim 2 is a shaft provided in the brush body and extending in the axial direction.
A sleeve provided on a shaft portion of the axial fan to detachably fit the shaft, forming an annular groove along an outer peripheral surface of the shaft, and opposing wall portions of a peripheral wall of the sleeve. , A pair of legs of a U-shaped locking pin are inserted through these holes, and the pair of legs is engaged with a groove of a shaft fitted in a sleeve. The size of the hole into which the distal end of the pair is inserted is set so that the space between the pair of legs can be expanded.

According to a third aspect of the present invention, the tip of the leg of the locking pin is bent, the leg is inserted into the hole of the sleeve, and the tip projects from the hole. The locking pin is fixed to the sleeve by locking to a peripheral wall of the sleeve.

According to a fourth aspect of the present invention, the side surface of the groove is chamfered.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the suction tool according to the present invention will be described below with reference to the drawings.

Suction tool (round brush) shown in FIGS. 1 to 5
Reference numeral 1 denotes a case main body (brush main body) 3 having a circular suction opening 2 formed at a front end (a lower surface in FIG. 1), a connection pipe 4 attached to a rear portion of the case main body 3, and provided inside the case main body 3. And a rotating brush 10. The connection pipe 4 is connected to a dust collection hose (not shown) connected to a cleaner body (not shown) or a distal end of an extension pipe.

The case body 3 is formed in a cylindrical shape and has a dome-shaped rear portion (upper portion in FIG. 1), and a flange 5 is formed in a lower portion (tip) of the case body 3. Is furnished with a bristle brush 6 made of synthetic resin artificial hair or horse hair.

In the rear portion of the case body 3, there is provided the case body 3.
A shaft 7 protruding toward the distal end along the axis of the shaft is integrally formed.
Has been fixed through. The shaft 30 extends downward along its axis as shown in FIG.

An annular groove 31 is formed in the upper part of the shaft 30 along the outer peripheral surface, and both side surfaces 31 A, 3 of the groove 31 are formed.
1B is chamfered and tapered. The periphery of the tip of the shaft 30 is chamfered to form a taper 32.

The connection pipe 4 is fixed to the case body 3 so as to form a predetermined angle with the axis of the case body 3, and communicates with the inside of the case body 3 through an opening 9 provided at the rear of the case body 3. .

The rotary brush 10 is rotatably and detachably mounted on the shaft 30. As shown in FIG. 7, a fan sleeve 11, an axial fan 12 mounted on the fan sleeve 11, and an axial flow fan 12, which will be described later. The axial fan 12 has a bristle brush 13 planted at the tip (the lower end in FIG. 7) of the blade 12F. The tip of the bristle brush 13 is drawn slightly inward from the tip of the bristle brush 6, as shown in FIGS. The bristle of the bristle brush 13 is synthetic hair made of synthetic resin or horse hair.

The fan sleeve 11 is shown in FIGS.
As shown in the figure, the sleeve body 15 has a cylindrical sleeve body 15 extending in the axial direction. A tubular portion 16 having a diameter larger than the diameter of the sleeve body 15 is integrally formed at the rear of the sleeve body 15. A flange 17 is provided at the rear end of the cylindrical portion 16.
Are integrally formed. The inner diameter of the cylindrical portion 16 is the case body 3
Is larger than the diameter of the shaft portion 7. Cylindrical bearings 18 and 19 are fixed to the front and rear inside the sleeve body 15,
A rear portion 19 </ b> A of the bearing 19 extends into the cylindrical portion 16.

A pair of holes 20 and a pair of holes 21 are provided on opposing peripheral walls of the upper peripheral wall of the sleeve main body 15, respectively.
Are opposed to each other. Then, U is inserted into the pair of holes 20 and 21.
The legs 22A and 22B of the L-shaped locking pin 22 are inserted, and the locking pin 22 is attached to the sleeve main body 15.

When the shaft 30 is fitted into the sleeve body 15 and the sleeve body 15 is mounted on the shaft 30 as shown in FIGS. 11 and 12, that is, when the rotating brush 10 is mounted on the shaft 30 (see FIGS. 3 and 3). FIG.
), The bearings 18 and 19 rotatably hold the shaft 30 back and forth, and the legs 22A and 22B of the locking pin 22 engage with the annular groove 31 of the shaft 30 to prevent the sleeve body 15 from coming off. It has become. In addition, the locking pin 22
Legs 22A and 22B rotatably hold shaft 30 by elastic force.

By attaching the sleeve body 15 to the shaft 30, the cylindrical portion 16 covers the lower part of the shaft portion 7 of the case body 3, as shown in FIG.

As shown in FIG. 7, the axial fan 12 has a cylindrical portion 12A fitted to the sleeve body 15 of the fan sleeve 11, and a plurality of axially extending axially extending tubes extending from the cylindrical portion 12A. Of the blade 12F. Each blade 12F is bent so that the air sucked from the suction opening 2 flows in the direction of the arrow shown in FIG. 3 to obtain a clockwise (in FIG. 2) rotational force.

Next, the operation of the suction device configured as described above will be described.

First, the connection pipe 4 of the suction tool 1 is connected to the tip of a dust collection hose or the tip of an extension pipe connected to a cleaner body (not shown). Then, when the electric blower of the cleaner body is driven, the dust collecting chamber of the cleaner body has a negative pressure, and the case body 3 of the suction tool 1 is connected via the dust collecting hose and the extension pipe.
The inside becomes negative pressure.

Due to this negative pressure, air is sucked from the suction opening 2 of the case body 3 as shown by an arrow in FIG. 3, and the rotating brush 10 rotates clockwise as shown in FIG. To go. By the rotation of the rotating brush 10, the bristle brush 13 of the blade 12F scrapes dust adhering to the screen door or the like.

Since the rotating brush 10 rotates around the axis of the case body 3, the tip of the bristle brush 13 rotates while sliding on the screen. That is, the bristle brush 1
The rotation locus formed by the tip of 3 is a circular plane parallel to the suction opening 2 and is in surface contact with a screen door or the like. For this reason, the dust scraping effect is improved, and the cleaning effect is improved.

The dust that has been scraped off is sucked from the inside of the case body 3 through the connecting pipe 4 to the cleaner body via an extension pipe, a dust collection hose, etc., as shown by arrows in FIG.

Since the lower portion of the shaft portion 7 of the case body 3 is covered by the cylindrical portion 16 of the fan sleeve 11, thread debris, dust, and the like are located between the lower surface of the shaft portion 7 and the bottom of the cylindrical portion 16. Of the cylinder 1
6 is formed with a flange at the upper end, so that the cylindrical portion 16
Threads, dust, and the like are prevented from entering between the shaft portion 7 and the shaft portion 7. For this reason, it is possible to prevent the thread debris from becoming entangled with the shaft 30 and the lower portion of the shaft portion 7 and from being clogged with dust between the shaft portion 7 and the cylindrical portion 16.

Even if the thread debris is entangled with the shaft 30 or the lower portion of the shaft portion 7 or dust is clogged between the shaft portion 7 and the cylindrical portion 16, the rotating brush 10 is moved downward (in FIG. 4). By pulling, the rotating brush 10 can be removed from the shaft 30 as shown in FIG. 5, so that thread scraps and clogged dust entangled with the shaft 30 and the lower portion of the shaft portion 7 can be easily removed.

The side surface 31A of the groove 31 of the shaft 30
Is tapered, so that the rotating brush 10 can be easily removed from the shaft 30 even if the spring force (elastic force) of the legs 22A, 22B of the locking pin 22 is strong,
In addition, the bearing 19
Can also be prevented from being damaged.

As shown in FIG. 5, the rotary brush 10 is mounted on the shaft 30 by pushing the rotary brush 10 in the direction of the arrow and fitting the shaft 30 into the fan sleeve 11 of the rotary brush 10. . On this occasion,
Since the tip of the shaft 30 and the side surface 31B of the groove 31 are tapered, the bearings 18 and
19 is prevented from being damaged.

FIG. 13 shows a case where the tip of the shaft 30 is formed in an R-shape to prevent the bearings 18 and 19 of the rotating brush 10 from being damaged.

FIG. 14 shows a second embodiment. In this second embodiment, a leg 61 of a locking pin 60 is provided.
The front ends 62a, 62b of A, 61B are bent inward in advance, and the widths of the holes 63, 64 of the sleeve body 15 are formed large.
Are inserted into the holes 63 and 64 together with the legs 61A and 61B so that the distal ends 62a and 62b are engaged with the outer peripheral wall of the sleeve body 15.

According to the second embodiment, the legs 61A,
Since the distal end portions 62a and 62b of the 61B are locked to the outer peripheral wall of the sleeve main body 15, the locking pin 60 is prevented from coming off. It is not necessary to perform bending or the like after insertion of the legs 61A and 61B. For this reason, the number of steps of assembling the suction tool 1 is reduced, and the inexpensive suction tool 1 can be provided.

FIGS. 15 and 16 show a third embodiment. In the third embodiment, the width of the holes 25, 25 in the peripheral wall of the sleeve body 15 is increased. Thereby, in addition to the bending of the legs of the locking pin 22, the distal ends 22a and 22b move in the width direction (the width in the left-right direction in FIG. 15), so that the legs can be easily expanded. For this reason, even if the locking pin 12 has a strong elastic force of the leg, the rotating brush 10 can be easily attached and detached.

In the third embodiment, two holes 25, 2
Although the width of 5 is increased, only one hole 25 may be provided.

In each of the above embodiments, the side surfaces 31A and 31B of the groove 31 of the shaft 30 are formed in a tapered shape, but the side surfaces 31A and 31B may be formed in an R shape.

[0040]

As described above, according to the first aspect of the present invention, there is provided a suction tool including a brush body having a suction opening formed at a tip thereof for sucking dust, wherein air sucked from the suction opening is provided. A rotating brush having an axial fan that obtains a rotational force by means of a rotary fan and a brush provided at the tip of the blade of the axial fan is rotatably and detachably mounted on an axis substantially perpendicular to the surface of the suction opening. Since it is provided, the cleaning effect can be improved, and even when thread shavings or the like are entangled with the shaft supporting the rotating brush, the thread scrap can be easily removed by removing the rotating brush. .

According to the second aspect of the present invention, there is provided a shaft provided in the brush main body and extending in the axial direction, and a sleeve provided on a shaft portion of the axial fan for detachably fitting the shaft. An annular groove is formed along the outer peripheral surface of the shaft, and a pair of holes are respectively provided in opposing walls of the peripheral wall of the sleeve, and a pair of legs of a U-shaped locking pin is inserted into these holes. Then, the pair of legs is engaged with the groove of the shaft fitted in the sleeve, and the size of the hole into which the tip of the leg is inserted is set so that the space between the pair of legs can be expanded. Therefore, in addition to the bending of the legs of the locking pin, the distal end moves in the width direction, thereby facilitating the expansion of the legs, and therefore the locking pin having a strong elastic force of the legs. However, the rotating brush can be easily attached and detached.

According to the third aspect of the present invention, the tip of the leg of the locking pin is bent, the leg is inserted into the hole of the sleeve, and the tip projects from the hole.
Since the locking pin is fixed to the sleeve by locking its tip to the peripheral wall of the sleeve, bonding work for fixing the locking pin, bending work after insertion of the legs of the locking pin, etc. Do not need. For this reason, the number of steps of assembling the suction tool is reduced, and an inexpensive suction tool can be provided.

According to the fourth aspect of the present invention, since the side surface of the groove is chamfered, it is easy to remove the rotary brush, and when the rotary brush is attached or detached, a bearing is provided on the sleeve. Damage to the bearing can be prevented.

[Brief description of the drawings]

FIG. 1 is a side view showing an external appearance of a suction tool according to the present invention.

FIG. 2 is a bottom view of the suction tool shown in FIG.

FIG. 3 is a cross-sectional view of the case main body showing a state where a rotating brush is provided.

FIG. 4 is a longitudinal sectional view showing a configuration of a rotating brush.

FIG. 5 is an explanatory view showing a state where a rotating brush is removed.

FIG. 6 is a side view showing a shaft.

FIG. 7 is a cross-sectional view illustrating a configuration of a rotating brush.

FIG. 8 is a side view showing a fan sleeve of the rotating brush.

FIG. 9 is a longitudinal sectional view showing a configuration of a fan sleeve.

FIG. 10 is a cross-sectional view of the fan sleeve shown in FIG. 9;

FIG. 11 is a longitudinal sectional view showing a fan sleeve mounted on a shaft.

FIG. 12 is a cross-sectional view showing the fan sleeve of FIG. 11;

FIG. 13 is an explanatory diagram showing a tip portion of a shaft of another example.

FIG. 14 is an explanatory diagram showing a second embodiment.

FIG. 15 is an explanatory diagram showing a third embodiment.

16 is a transverse sectional view of the fan sleeve shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suction tool 2 Suction opening 3 Case main body 10 Rotary brush 12 Axial fan 12F Blade 13 Brush 30 Shaft

Claims (4)

[Claims] 1. A suction tool comprising a brush body having a suction opening formed at a tip thereof for sucking dust, comprising: an axial fan for obtaining a rotational force by air sucked from the suction opening; A suction tool characterized in that a rotary brush having a brush provided at a tip portion of a blade is rotatably and detachably provided around an axis substantially perpendicular to a surface of the suction opening. 2. A shaft provided in the brush body and extending in the axial direction, and a sleeve provided on a shaft portion of the axial fan for removably fitting the shaft, the outer peripheral surface of the shaft. A pair of holes are respectively provided in opposing walls of the peripheral wall of the sleeve, and a pair of legs of a U-shaped locking pin are inserted through these holes to form a groove inside the sleeve. The pair of legs is engaged with the groove of the shaft fitted into the shaft, and the size of the hole into which the tip of the leg is inserted is set so that the space between the pair of legs can be expanded. The suction tool according to claim 1, wherein 3. A tip of a leg of the locking pin is bent,
The locking pin is fixed to the sleeve by inserting the leg into the hole of the sleeve, projecting the tip from the hole, and locking the tip to the peripheral wall of the sleeve. Item 3. The suction tool according to Item 2. 4. The suction tool according to claim 2, wherein a side surface of the groove is chamfered.