JPH04200518A - Rotary brush of suction port body for vacuum cleaner - Google Patents

Abstract

PURPOSE:To improve the scratch-up effect of cottom refuse and hair entwined to a carpet, etc., by providing plural holes along the longitudinal direction in a blade and forming a thick projecting part for surrounding the hole on the surface of the rotational direction side of the blade, or forming an acute- angled projection on the side going away from a brush base of the inside peripheral surface of the hole. CONSTITUTION:In a blade 17, plural holes 20 are provided along the longitudinal direction in the part in which the blade 17 is opposed to the surface to be cleaned in a state that it comes into contact with the surface to be cleaned. On the surface of the rotational direction side of the blade 17, a thick projecting part 21 for surrounding the hole 20 is formed respectively, or a projection 31 is provided on the inside peripheral surface of the side going away from a brush base 16 of a hole 30. In such a way, at the time of scratch-up of the blade 17, as the hole 20, the thick projecting part 21 and the projection 31 catch cotton refuse and hair adhering to a carpet, etc., its scratch-up effect becomes sufficient.

Description

Detailed Description of the Invention (Industrial Application 1jF) The present invention relates to a rotating brush for a suction port body for a vacuum cleaner, which is equipped with a blade that is rotationally driven by a driving means such as a motor or a turbine to scrape up dust. It is something.

(Prior Art) As a suction port body equipped with this type of rotating brush, there is one shown in FIG. 7, for example.

The suction port body 1 shown in FIG. 7 includes a suction port body 2,
This suction port main body 2 is provided with a suction port 3 that opens downward, and a rotating brush 4 is attached to this suction port 3.

The rotating brush 4 includes bearing members 5, 5, a shaft-shaped brush stand 6 whose both ends are rotatably supported by the bearing members 5, 5, and a rubber brush stand 6 that is protruded from the outer surface of the brush stand 6. It has a blade 7 of. This brush stand 6 is rotatably held by the suction port main body 2 by holding the bearing member 5.5 in the suction port main body 2.

Further, a motor 8 is attached to the suction port body 1 as rotation driving means, and the rotational force of this motor 8 is transmitted to the brush stand 6 via a belt 9.

In the suction port body 1 shown in FIG. 4, the rotation of the motor 8 is transmitted to the brush stand 6 by the belt 9, and the brush stand 6 is rotated at high speed, so that the blades 7 of the brush stand 6 are able to touch the carpet etc. This will scrape up the dust, etc. that has adhered to it.

By the way, the blade 7 is shown in Fig.
As shown in Publication No. 248), the small projection 7a has a square pyramid shape.
(See FIG. 9) or have a large number of holes in the blade 7 (see Japanese Patent Publication No. 63-35246).

These protrusions 117.7a and holes are used to scrape up cotton dust, hair, etc. that are entangled in carpets, etc.

(Problems to be Solved by the Invention) However, since the entire blade 7 is made of flexible and soft synthetic rubber, its surface is smooth. For this reason, there was a problem in that mere small protrusions 7a and holes were not able to sufficiently scrape up cotton dust and hair entangled with carpets and the like.

Therefore, an object of the present invention is to provide a vacuum cleaner that can sufficiently scrape up cotton dust and hair entangled in carpets, etc. even if the blade is made of flexible and soft synthetic rubber. An object of the present invention is to provide a rotating brush for a suction port body.

(Means for Solving the Problems) In order to achieve the above object, the present invention includes a shaft-shaped brush stand that is rotationally driven by a driving means, and a brush stand that projects from the outer surface of the brush stand and extends in the longitudinal direction. In a rotating brush of a suction port body for a vacuum cleaner including a flexible blade, the blade is provided with a plurality of holes along the longitudinal direction, and a thick protrusion surrounding the holes is provided on a surface of the blade on the rotation direction side. It is characterized by the formation of

The blade is also characterized in that a plurality of holes are provided along the longitudinal direction of the blade, and an acute-angled protrusion is formed on the inner peripheral surface of the hole on the side facing away from the brush stand.

(Function) According to such a configuration, when the rotating brush rotates, the wind resistance is reduced by the holes provided in the blade. The thick protrusion prevents a decrease in strength due to the provision of the hole, and also scrapes up cotton dust and hair entangled with the carpet. At this time, the holes and the thick protrusions catch cotton dust and hair, so that the raking effect is sufficient.

In addition, since a protrusion with an acute angle is formed on the inner peripheral surface of the hole, the sharp protrusion scrapes up cotton dust and hair entangled in the carpet as the blade rotates, so the scraping effect is It will be sufficient.

(Example) Embodiments of the present invention will be described below based on the drawings.

In FIG. 3, reference numeral 11 denotes a suction port body including a suction port body 12, and the suction port body 12 is provided with a suction port 13 that opens downward, and a rotating brush 14 is attached to this suction port 13. .

The rotating brush 14 includes a bearing member 15.15, a ring-shaped brush stand 16 whose both ends are rotatably supported by the bearing member 15.15, and a rubber blade protruding from the outer surface of the brush stand 16. It has 17.

As shown in FIG. 1, the blade 17 has a plurality of holes 20 along its longitudinal direction at its tip, that is, at a portion facing the surface to be cleaned with the blade 17 in contact with the surface to be cleaned.
As shown in FIG. 2, thick protrusions 21 surrounding the holes 20 are formed on the rotational direction side of the blade 17, respectively.

The brush stand 16 connects the bearing member 15.15 to the suction port body 12.
By holding it in place, it is rotatably held with respect to the suction port main body 12.

Further, a motor 18 is attached to the suction port body 11 as rotation driving means, and the rotational force of the motor 18 is transmitted to the brush stand via a belt 19.

Next, the action of the rotating brush of the vacuum cleaner suction port configured as described above will be explained.

When the motor 18 rotates, this rotation is transmitted to the brush stand 16 via the belt 19, and the brush stand 16 rotates at high speed.The high speed rotation of the brush stand 16 causes the blade 17 to rotate.
rotates at high speed together with the brush stand 16, and scrapes up dust and the like adhering to surfaces to be cleaned, such as carpets.

By the way, since the blade 17 is made of rubber, its surface is smooth, but the blade 17 is provided with a large number of holes 20, and furthermore, the blade 17 has thick protrusions surrounding the holes 20 on the rotational direction side of the blade 17. 21 is formed, so that when the blade 17 is raking up, the holes 20 and the thick protrusions 21 catch cotton dust and hair attached to the carpet, etc., so that the raking effect is sufficient. Become something.

Further, the thick protrusion 21 has the function of catching cotton dust and hair as described above, and the function of preventing the strength of the blade 170 from being reduced by the hole 20.

Furthermore, the large number of holes 20 provided in the blade 17 reduces air resistance due to high-speed rotation of the blade 17, so the load on the motor 17 is reduced.

4 and 5 show other embodiments,
This has a plurality of sharp protrusions 31 formed on the inner shoulder surface of a plurality of holes 30 provided along the longitudinal direction of the blade 17. This protrusion 31 is used to scrape up cotton dust, hair, etc. adhering to the carpet.

In this embodiment, the protrusion 31 is provided all around the inner circumferential surface of the hole 30, but the blade 17 is bent and spreads the carpet 111J by rotation of the brush stand 16, as shown in FIG. Since the brush is scraped up, cotton dust, hair, etc. can be sufficiently scraped up even if the protrusion 31 is provided only on the inner circumferential surface of the part A, that is, on the side away from the brush stand 16.

(Effects of the Invention) According to the present invention, the load on the drive source of the rotating brush can be reduced. Further, the blade can be reinforced by the thick protrusion, and cotton dust, hair, etc. entangled in a carpet or the like can be effectively scraped up.

In addition, since a protrusion with an acute angle is formed on the inner peripheral surface of the hole, the protrusion scrapes up cotton dust and hair entangled with the carpet as the blade rotates, so the scraping effect is sufficient. Become something.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a rotating brush of a suction port body for a vacuum cleaner according to the present invention, FIG. 2 is a sectional view showing a cross section of the rotating brush, and FIG. 3 is a rotating brush shown in FIG. 4 and 5 are explanatory diagrams showing other embodiments; FIG. 6 is an explanatory diagram for explaining the action of the blade; FIG. 7 8 is a plan view of a suction port body for a vacuum cleaner equipped with a conventional rotating brush, FIG. 8 is a perspective view showing an example of a conventional rotating brush, and FIG. 9 is an enlarged perspective view of the small protrusion shown in FIG. 8. be. 11... Suction port body 14... Rotating brush 16... Brush stand 17... Blade 18... Motor (driving means) 20, 30... Hole 21... Thick protrusion 31... ··protrusion

Claims (2)

[Claims] (1) A rotating brush for a suction port body for a vacuum cleaner, which includes a shaft-shaped brush stand that is rotationally driven by a driving means, and a flexible blade that protrudes from the outer surface of the brush stand and extends in the longitudinal direction. A rotation of a suction port body for a vacuum cleaner, characterized in that a plurality of holes are provided in the blade along the longitudinal direction, and a thick protrusion surrounding the holes is formed on a surface of the blade on the rotation direction side. brush. (2) A rotating brush for a suction port body for a vacuum cleaner, which includes a shaft-shaped brush stand that is rotationally driven by a driving means, and a flexible blade that protrudes from the outer surface of the brush stand and extends in the longitudinal direction. , wherein the blade is provided with a plurality of holes along the longitudinal direction, and an acute-angled protrusion is formed on the inner circumferential surface of the hole on the side facing away from the brush stand. brush.