JPH04176419A - Floor nozzle for vacuum cleaner - Google Patents

Abstract

PURPOSE:To increase safety and prevent damages of a rotor due to the friction heat by covering the outerside of an auxiliary agitator with a protective cover. CONSTITUTION:A main agitator 3 scrapes out dust on a floor to be cleaned, a carpet for instance, to take it into the suction inlet 1 of a nozzle body 2. The dust taken into the suction inlet 1 reaches the filter section by the suction force. When cleaning the corners of a room, an auxiliary agitator 10 is handled to guide along the corners of the room. Since the outside of the auxiliary agitator 10 is covered with a protective cover 15, there is almost no fear that children touch the agitator members of the auxiliary agitator 10 even if their hands approach to the agitator by mistake. A part of dust scraped up by the auxiliary agitator 10 is entrapped between the auxiliary agitator 10 and the protective cover 15. But since a dust-removing hole 16 is formed on the protective cover 15, the dust is discharged from this dust-removing hole 16 to the outside.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a floor nozzle for a vacuum cleaner in which a sub-agitator, which is effective for cleaning corners of a room, is arranged outside the side wall of the floor nozzle.

2. Description of the Related Art Conventionally, in this type of bed nozzle, a sub-agitator was fixed coaxially with the main agitator, and the sub-7 agitator was positioned outside the side wall of the nozzle body. The sub-agitator is constructed by radially implanting stirring members made of brush bristles on the outer peripheral surface of a circular rotating body.

Therefore, with this floor nozzle, even the corners of the room can be cleaned using the sub-agitator.

Problems to be Solved by the Invention However, in the above configuration, since the sub-agitator is located outside the side wall of the nozzle body, there is a problem in that the sub-agitator may be accidentally touched by a worker's hand, causing injury.

The present invention solves these conventional problems and aims to improve safety.

Means for Solving the Problems A first means of the present invention for achieving the above object is to provide a main agitator which is rotatably driven by a drive source inside the nozzle body, and a corner which rotates in conjunction with the main agitator. A secondary agitator for cleaning is disposed outside the side wall of the nozzle body, and the secondary agitator has a stirring member protruding radially from the outer periphery of a rotating body, and a dust exhaust hole is provided in the center of the outside of the secondary agitator. A protective cover with a

The second means is to shift the center of the dust exhaust hole with respect to the rotation center of the auxiliary agitator.

A third means is to provide a straight portion on the edge of the dust exhaust hole.

Function In the above-described present invention, since the outside of the auxiliary agitator is covered with a protective cover, there is no possibility that the auxiliary agitator will come into contact with the operator's hands or the like. Further, when such a protective cover is provided, dust tends to accumulate between the cover and the sub-agitator. The accumulated dust not only acts as a rotational load on the agitator, but also causes the rotating body of the sub-agitator to overheat due to friction, and if this rotating body is made of synthetic resin, it will melt. In the present invention, since the dust exhaust hole is formed in the central portion of the protective cover, the dust that has entered between the protective cover and the sub-agitator is discharged outside through the dust exhaust hole.

Further, in the second means, the dust passes through the dust exhaust hole eccentrically and is cut short at the edge of the hole, and further, in the third means, the dust passing through the straight part is cut short.

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

In FIGS. 1 and 2, a nozzle body 2 having a suction port 1 on the bottom surface has a main agitator 3 provided laterally inside thereof. The main agitator 3 is constructed by planting a stirring member 5 such as brush bristles or an elastic band on the outer circumferential surface of a rotary cylinder 4, and a part of the stirring member 5 is arranged so as to face the outside from the suction port 1. be.

The shaft 6 passing through the center of the rotating cylinder 4 is a pole bearing 7.
The nozzle body 2 is rotatably supported by a bearing device 8 having an end thereof projecting outward from the side wall 9 of the nozzle body 2 . The main agitator 3 is rotatably driven by a drive source such as a motor or an air turbine.

The sub-agitator 10 is disposed at the end of the shaft 6, that is, on the outside of the side wall 9 of the nozzle body 2.

This sub-agitator 10 includes a circular rotating body 12 made of synthetic resin fixed to a shaft 6 via a screw 11, and this rotating body 1.
The stirring member 13 is formed of brush bristles or the like and is installed radially on the outer circumferential surface of the stirrer 2 so that the outer circumferential end side is positioned slightly outward.

The outside of the sub-agitator 10 is covered with a protective cover 15 in which a plurality of slit-shaped confirmation holes 14 are formed radially.

The opening area of the slit-shaped confirmation hole 14 is set to such an extent that the hands and fingers of an infant or the like cannot enter therein. Also protective cover 1
The lower part of the auxiliary agitator 5 is linear and covers the sub-agitator 10 except for the lower part thereof.

Furthermore, a round dust exhaust hole 1 is provided in the center of the protective cover 15.
6 is formed.

In the above configuration, the main agitator 3 scrapes out dirt from a surface to be cleaned, for example, a carpet surface, and guides it to the suction port 1 of the nozzle body 2. The dirt introduced into the suction port 1 flows through the passage in the nozzle body 1, the extension pipe, the hose, etc. due to the suction force of the vacuum cleaner, and reaches the filtration section.

Furthermore, when cleaning a corner of a room, the sub-agitator 10 may be placed along the corner of the room.

Since the outside of the secondary agitator 10 is covered with a protective cover 15, there is almost no risk of touching the stirring member 13 of the secondary agitator 10 even if a child accidentally approaches the hand. No more getting caught and getting injured.

By the way, some of the scraped up dirt enters between the sub-agitator 10 and the protective cover 15. However, in the embodiment described above, since the dust exhaust hole 16 is formed in the protective cover 15, the dust is discharged to the outside through the dust exhaust hole 16. Furthermore, even if dirt should accumulate, the confirmation hole 14 is formed in the protective cover 15, so that the accumulation of dirt can be confirmed from the outside, and removal can be performed accurately.

In FIG. 3, the dust exhaust hole 16 is shifted from the center of rotation of the sub-agitator 10. In this configuration, the dust passes through the dust exhaust hole 16 eccentrically and is cut short at the edge of the hole. Become. Therefore, dust removal is ensured.

In FIG. 4, the dust exhaust hole 16 is semicircular, the straight part 17 is
6 shows a polygonal straight part 18, FIG. 7 shows a continuous straight part 19 in the shape of a saw blade, and FIG. 8 shows a pair of semicircular holes arranged at different positions to form a dust exhaust hole 16. However, straight portions 20 are set at the joints.

In these examples, straight sections 17.18.19
．． It is cut short at 20 to ensure dust removal.

Effects of the Invention As described above, according to the present invention, by covering the outside of the auxiliary agitator with a protective cover, it is possible to provide a safe floor nozzle that will not cause any injuries. Further, since there is no possibility that dirt will accumulate between the protective cover and the sub-agitator, the rotating body will not be damaged by frictional heat, and in addition, an increase in rotational load can be suppressed. Furthermore, by making the dust exhaust hole eccentric or by providing a straight section on the edge of the hole, excellent effects can be achieved, such as the dust being cut into short pieces and reliably discharged.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a main part of a floor nozzle showing an embodiment of the present invention;
FIG. 2 is a front view of the protective cover, and FIGS. 3, 4, 5, 6, 7, and 8 are front views of the protective cover showing other embodiments. 2... Nozzle body, 3... Main agitator, 9...
Side wall, 10... Sub-agitator, 12... Rotating body, 1
3... Stirring member, 15... Protective cover, 16...
Dust exhaust hole, 17.18.19.20...straight section. Name of Agent: Patent Attorney Akira Koji and 2 others 2 - Nodel Unpaid 3 - Arretator q - 11 Kenpei lθ - Deputy Agitator / Z - @ k itto WE 2 Figure 1 Otsu No. 3 Chang q ni Is W! Figure 44 Figure 5 Figure 16 /B 15 Figure 6 Figure 7

Claims (3)

[Claims] (1) A main agitator that is rotatably driven by a drive source is installed inside the nozzle body, and a sub-agitator for corner cleaning that rotates in conjunction with the main agitator is arranged outside the side wall of the nozzle main body. A floor nozzle for a vacuum cleaner, in which an agitation member radially protrudes from the outer periphery of a rotating body, and a protective cover having a dust exhaust hole in the center portion is provided on the outside of the sub-agitator. (2) The floor nozzle for a vacuum cleaner according to claim 1, wherein the center of the dust exhaust hole is offset from the rotation center of the sub-agitator. (3) The floor nozzle for a vacuum cleaner according to claim 1, wherein a straight portion is provided on the edge of the dust exhaust hole.