JPH0444536B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a floor nozzle for a vacuum cleaner with an agitator.

Conventional technology Conventionally, the agitator of this type of floor nozzle has a structure in which brush bristles are planted on the circumferential surface of a rotor. It was introduced into the floor nozzle by suction from a vacuum cleaner.

Furthermore, as shown in FIG. 4, a structure in which a thin plate-shaped circumferential piece 51 is provided protruding in the longitudinal spiral direction of the circumferential surface of the rotor 50 has also been considered.
Publication No. 161334). In addition, as shown in FIGS. 5 to 7, there are some cases in which the shape of the circumferential piece 51 is changed to make it more flexible and to reduce resistance.

Problems to be Solved by the Invention However, in the above-mentioned former floor nozzle agitator, string-like objects such as lint get entangled with the brush bristles, and eventually wrap around the entire agitator, causing it to lose its intended function, and it is difficult to remove it. It took a lot of time and effort.

Also, among the various types of carpets, there are those with long hairs, and those with extremely hard surfaces with hairs running over them like a net. This had the disadvantage that it could not be used as a floor nozzle for a vacuum cleaner, as it sometimes did not remove threads, fibers, dust, etc.

The present invention solves these problems,
This allows the agitator to function well at all times.

Means for Solving the Problems The technical means of the present invention for solving the above problems is to provide an agitator and a driving source thereof inside the floor nozzle body, and the agitator is attached to the circumferential surface of the rotor. A protruding strip made of a flexible material is provided, and the protruding strip is composed of a thick walled portion on the base side and a thin walled portion on the tip side, and a protrusion for scraping up dust is formed on at least one surface of the thin walled portion. That's what I did.

Function In the floor nozzle for a vacuum cleaner using the above-mentioned means, the protrusion of the agitator has a large number of protrusions formed on at least one surface (the surface on the rotation direction side), and the protrusion of the part provided with the protrusions is Because the stripe wall thickness is thinner than other wall thicknesses, the parts without protrusions have sufficient elasticity and repulsive force, and the thin parts with protrusions are sensitive to irregularities on the carpet surface. Since it can be bent, it can sweep dust deep into long-haired carpets.

Embodiment The embodiment will be described below with reference to the drawings.

1 to 3 show the first embodiment, in which a floor nozzle main body 7 is obtained by connecting upper and lower main body members 9 and 10 via a bumper 8, and the front interior thereof has a lower part. A suction chamber 12 having an opening as a suction port 11 is formed, and a turbine chamber 13 is formed in the rear interior. The turbine chamber 13 is a partition wall 1
4 and a suction chamber 12, and the rear portion having an opening 15 is set in an arc shape. 16 is an agitator provided in parallel to the suction chamber 12; 17 is a bearing of the agitator 16 provided on both side walls of the suction chamber 12;
18 is a fixed brush attached parallel to the rear of the suction port 11, and 19 and 20 are floor nozzle bodies 7 in order to position the suction port 11 at a constant distance from the surface to be cleaned.
These are wheels installed at the front and rear of the vehicle.

21 is a substantially semi-cylindrical suction joint that rotatably slides on the rear inner surface of the turbine chamber 13;
A cylindrical connection port 22 protruding from a part of the peripheral wall
A floor nozzle pipe 24 is rotatably attached to the floor nozzle pipe 24 through a ring 23, and an extension pipe connected to the suction side of the vacuum cleaner via a hose is detachably connected to the floor nozzle pipe 24.

Reference numeral 25 designates a turbine which is disposed in the turbine chamber 13 and whose outer periphery is partially surrounded by the suction joint 21, and a shaft body 26 which penetrates the rotating shaft on one side of the suction joint 21 and protrudes to the outside of the turbine room is integrated. It is set in.

A power transmission belt 27 transmits the rotation of the turbine 25 to the agitator 16 via a pulley 28.

Further, the turbine 25 is disposed offset toward the belt 27 disposed side of the turbine chamber 13. 29,3
0 are two vent holes formed in the partition wall 14, one vent 29 faces the lower half of the turbine 25, and the other vent 30 does not face the turbine 25 and directly connects the suction joint 21. It faces the mouth 22.

Reference numeral 31 denotes a switching lever, and a shielding plate 32 protruding from a part of the switching lever can open and close the above-mentioned ventilation hole 30.

In the above configuration, when the switching lever 31 is now slid to the right in FIG. 2 and the ventilation port 30 is closed by the shielding plate 32 and communicated with the ventilation port 29, the suction port 11 → suction chamber 12 → ventilation port 29, the suction air collides with the turbine 25, and then flows from the connection port 22 of the suction joint 21 to the floor nozzle pipe 24 to the extension pipe to the hose to reach the vacuum cleaner. Therefore, the turbine 25 rotates, and its rotational force is transmitted to the agitator 16.

By the way, the agitator 16 is connected to the rotor 3.
4, a protrusion band 35 is attached to the outer peripheral surface in the longitudinal spiral direction. This protrusion band 35 is made of a flexible material such as rubber, and has a large number of protrusions 36 formed on at least one surface thereof (the side surface in the direction of rotation). Furthermore, the thickness of the protrusion band 35 is such that the portion where the protrusion 36 is provided is thinner than the other portion.

Now, when the agitator 16 is rotating clockwise as shown in FIG. 1, the protrusion band 35 is displaced in the counter-rotation direction when it comes into contact with the surface to be cleaned, and takes a shape along the surface to be cleaned. At that time, the protrusion band 35 is
The part without the protrusions is thick and has sufficient elasticity for the entire protrusion band 35, and the part with the protrusion 36 is thin, so the part where dust is collected can cope with the unevenness of the carpet surface. It moves relatively as if stroking the surface to be cleaned, and the dust is squeezed by its many protrusions 36 and released from the surface to be cleaned.

The loose dust is effectively sucked into the floor nozzle body 7 by the repelling action of the ridge band 35 when it returns to its original shape (due to elasticity and centrifugal force) and by the suction force of the vacuum cleaner. .

Here, when the protruding band 35 is in contact with the surface to be cleaned, it blocks the flow of air from the front and helps the suction force of the vacuum cleaner to concentrate and effectively work on the surface to be cleaned. .

Further, since the protruding band 35 is band-shaped, it is possible to prevent string-like dust such as lint from becoming entangled.

Effects of the Invention As is clear from the above explanation, the present invention provides a protrusion band in an agitator, in which a large number of protrusions are formed on at least one surface (the surface on the rotational direction side), and that the protrusion is When the thickness of the protrusion band is thinner than other thicknesses, the part without protrusions has sufficient elasticity and repulsion, and the thin part with protrusions is sensitive to irregularities on the carpet surface. Since it can be bent, it can sweep dust deep into long-haired carpets.

[Brief explanation of drawings]

Fig. 1 is an operational diagram of an agitator showing the first embodiment of the present invention, Fig. 2 is a top view of the floor nozzle with the upper main body member removed, and Fig. 3 is a sectional view of the floor nozzle. FIG. 4 is a cross-sectional view of an agitator showing a conventional example, and FIGS. 5 to 7 are perspective views of each circumferential piece showing a conventional example. 7... Floor nozzle body, 16, 40... Agitator, 35... Projection band, 36, 43... Projection.

Claims (1)

[Claims] 1. An agitator and its driving source are installed inside the floor nozzle body, and the agitator has a protruding band made of a flexible material on the circumferential surface of the rotor, and the protruding band has a thickness on the base side. A floor nozzle for a vacuum cleaner, which is composed of a wall part and a thin wall part on the tip side, and has a protrusion for scraping up dust on at least one surface of the thin wall part.