JPH09289961A - Rotor for floor nozzle for cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sufficient cleaning effect by preventing the twist of a blade member from being easily returned by helically providing plural projected line parts around a rod, providing plural blade parts at a cylindrical part and inserting the rod into the central hole of the blade member pushed out and molded by a flexible material. SOLUTION: A rod 11 of a rotor 8 is composed of linear round steel or the like and at the mount part of a blade member 12, one or plural projected line parts 19 protruded onto the outer periphery of the rod 11 are helically provided around the rod 11. The blade member 12 integrally has plural blade parts 21 outside a cylindrical part 20 and is pushed out and molded by flexible rubber or plastic. Then, when the rod 11 is inserted into a hole 22 of the blade member 12, since the blade member 12 has flexibility, that cylindrical part 20 is twisted along the projected line parts 19 around the rod 11 and the blade member 12 is made helical. As a result, the blade member 12 is kept twisted by the projected line parts 19 around the rod 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary rotor of a floor nozzle used as an attachment of a vacuum cleaner, which is rotated by a driving device.

[0002]

2. Description of the Related Art A conventional rotary rotor for a floor nozzle for a vacuum cleaner has a blade member with a shaft twisted at a predetermined angle in order to make the blade portion spiral, as in Japanese Patent Application No. 7-348495. A method is used in which both ends of the blade portion are held by recesses provided in the bracket.

[0003]

In such a conventional rotary rotor, since the blade portion, which is a portion for directly scraping dust on the floor, is required to have flexibility, it is formed integrally with the blade portion. The tubular portion that was also soft like the blade portion. Further, since the twist of the blade member is held only by the brackets at both ends of the blade portion, there was almost no resistance between the shaft and the tubular portion except the holding portion. For this reason, the blade that is held in a spiral shape in the state where no external force is applied rotates the rotating rotor during cleaning, and when the blade portion rubs the floor surface, the load causes the twisting from the tubular portion that is the root of the blade. Since the spiral shape was locally collapsed due to the removal of the dust, such a rotating rotor does not play the original role of reliably scraping up the dust on the floor surface and reduces the cleaning efficiency. Had.

An object of the present invention is to provide a rotary rotor for a floor nozzle for a cleaner, in which the twist of the blade member is not easily returned by an external force and a sufficient cleaning effect can be obtained.

[0005]

The rotary rotor of the present invention comprises:
Providing a spiral ridge protruding on the outer periphery of a linear shaft, this shaft is inserted into the central hole of a blade member extruded from a flexible material having a plurality of blades outside the cylinder. The blade portion is made into a spiral shape and the brackets are fixed to both ends of the blade portion to complete the blade.

[0006]

In the rotating rotor of the present invention, the blade member is twisted in accordance with the spiral ridges provided on the outer periphery of the linear shaft. Therefore, even if an external force is applied to the blade portion, the blade member is twisted. Can rotate the rotor without being pushed back.

[0007]

EXAMPLES Examples will be described with reference to the drawings.
In the figure, 1 is a lower case of a floor nozzle having an elongated horizontal opening 2 on the bottom surface, 3 is an upper case, 4 is an intake port surrounded by the lower case 1 and the upper case 3 at the center of the opening 2, and 5 is a cleaner. Intake pipe connected to an extension pipe (not shown) of
6 is a belt for transmitting the rotation of the motor 7 to the rotating rotor 8,
It is hung on a drive pulley 9 of the motor 7 and a driven pulley 10 of the rotary rotor 8.

The rotary rotor 8 has a linear shaft 11, a blade member 12 made of an elastic body, and a driven side bracket 13 (hereinafter referred to as bracket 13) having a driven pulley 10.
The idle side bracket 14 (hereinafter referred to as the bracket 14) is provided with bearings 15 and 16 at both ends thereof, and is mounted in bearing mounting recesses 17 and 18 provided in the lower case 1 to be rotatably held. There is.

The shaft 11 is made of a linear round steel or the like, and the mounting portion of the blade member 12 has no protruding ridge portion 19 projecting to the outer periphery of the shaft 11 in a spiral shape around the shaft 11. There are multiple articles.

The blade member 12 integrally has a plurality of blade portions 21 outside the tubular portion 20, and is formed by extrusion molding a flexible material such as rubber or plastic.

When the shaft 11 is inserted into the hole 22 of the blade member 12, since the blade member 12 has flexibility, the tubular portion 20 thereof is twisted following the ridge portion 19 of the shaft 11, and the blade is The part 21 has a spiral shape.

Brackets 13 and 14 are fixed to both ends of the blade member 12 on the shaft 11 by an effective means such as press fitting or bonding, so that the rotary rotor 8 is completed.

In the above embodiment, the ridge portion 1 provided on the shaft 11
Although 9 has a spiral shape in one direction, as another embodiment,
As shown in FIG. 9, the ridge portion 19 may be reversed in the spiral direction at the central portion of the shaft 11. The rotary rotor 8 using this shaft 11 has a shape as shown in FIG. 10, and it is possible to efficiently collect dust in the central portion by selecting the rotation direction.

[0014]

As described above, according to the present invention, since the twist of the blade member 12 is maintained by the ridge portion 19 of the shaft 11, the twist can be held over the entire blade member 12 and the external force can be maintained. Since the twisting of the blade member 12 is always maintained even when it is applied to the blade portion 21, the rotating rotor 8 configured in this way can always reliably scrape up dust on the floor surface and obtain a sufficient cleaning effect. You can

Further, in the rotary rotor 8 of the present invention, the blade member 12 can be twisted only by inserting the shaft 11 into the blade member 12. Therefore, as in the conventional example, the blade member is twisted at a predetermined angle, Since the troublesome process of receiving the blade portion and holding the twist in the concave portion of the bracket can be omitted, the manufacturing time can be significantly shortened and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a floor nozzle accommodating a rotating rotor of the present invention, excluding an upper case.

FIG. 2 is a cross-sectional view of the floor nozzle.

FIG. 3 is a front view in which a part of the rotary rotor is shown in section, showing an embodiment of the present invention.

FIG. 4 is likewise a perspective view of a rotating rotor.

FIG. 5 is likewise a perspective view of a shaft.

FIG. 6 is likewise a sectional view of the shaft.

FIG. 7 is a perspective view of a blade member.

FIG. 8 is a perspective view showing a state in which the shaft is being inserted into the blade member.

FIG. 9 is a perspective view of a shaft showing another embodiment of the present invention.

FIG. 10 is a perspective view of a rotary rotor of the same.

[Explanation of symbols]

 8 Rotating Rotor 11 Shaft 12 Blade Member 19 Convex Line Section 20 Cylindrical Section 21 Blade Section 22 Hole

Claims (1)

[Claims] 1. A vacuum cleaner floor nozzle having a horizontally elongated opening on the bottom surface, the outer periphery of a rotating rotor rotated by a built-in drive device protruding from the bottom surface of the opening, and a protrusion protruding on the outer periphery of a linear shaft. One or a plurality of strips are provided spirally around the shaft, and a plurality of blades are provided outside the tubular portion, and the strips are extruded from a flexible material such as rubber or plastic. A rotary rotor for a floor nozzle for a vacuum cleaner, characterized in that a blade portion is made into a spiral shape by inserting a shaft into a central hole of the blade member.