JPH02131728A - Floor nozzle for vacuum cleaner - Google Patents

Abstract

PURPOSE:To improve a dust collecting property by forming an agitator so that plural projecting line bands consisting of a flexible material are provided on the peripheral surface of a rotor, many projections are formed on one face thereof, the tip of the projecting line band is notched in an uneven shape, and pitches of the uneven position are shifted from each other. CONSTITUTION:A turbine 22 rotates, and in a position where its rotational force is transferred to an agitator 13, as for the agitator 13, a projecting line band 32 is installed in the longitudinal direction of the outside peripheral surface of a rotor 31. In this regard, this projecting line band 32 is made of a flexible material such as rubber, etc., and also, on at least one face thereof, many projections are formed. In this case, in the tip part of the projecting line band 32, many uneven notches 34 are formed, and also, as for positions of the notches 34, pitches are shifted from each other.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an agitator i for a floor nozzle for a vacuum cleaner used at home.

BACKGROUND OF THE INVENTION Conventionally, a protrusion band provided on this type of agitator has adopted a structure as described in, for example, Japanese Patent Application Laid-Open No. 61-33634. Further, to explain the details with reference to FIG. 4, 1 is an agitator, 2 is a protrusion strip provided in a spiral shape on the agitator, and a large number of protrusions 3 are provided on the surface of the protrusion strip 2 that comes into contact with the bed. It was something that I had.

Problems to be Solved by the Invention However, in such a structure, since the plurality of protrusions 2 contact the surface to be cleaned over the entire circumference, the frictional force between the protrusions 2 and the surface to be cleaned is If the rotational force of the agitator 1 becomes large, there is a risk that the rotational force of the agitator 1 will be overloaded and the rotational speed of the agitator 1 will be reduced.

In particular, since a large number of protrusions 3 are formed on the protrusion band 2, there is a great risk of this.

Therefore, when the rotational speed of the agitator 1 decreases, the number of times the firing band 2 hits the surface to be cleaned decreases, resulting in a decrease in dust collection power and a drawback that it becomes difficult to remove dust.

The present invention has solved these conventional problems, and an object of the present invention is to provide a floor nozzle with improved dust collection performance.

Means for Solving the Problems In order to solve the above-mentioned conventional problems, the present invention includes an agitator and its driving source installed inside the floor nozzle main body, and the agitator is made of a flexible material on the surface of the rotor. It is configured by providing a plurality of protrusions, and a large number of protrusions are formed on at least one surface of the protrusions, the tips of the protrusions are cut out in an uneven shape, and the protrusions are The positions of the concave and convex portions are formed such that they are offset by a pinch from each other.

Effect In the above-mentioned means, the tip of the protruding strip provided on the agitator is cut out in an uneven shape, so even if the protruding strip comes into contact with the surface to be cleaned, the contact area is half that of the conventional method. So,
The frictional force with the surface to be cleaned is reduced and the rotational speed of the agitator is not reduced.

In addition, the positions of the unevenness formed at the tips of the plurality of protrusions are as follows:
Since the pitches are shifted by one from each other, the cleaning area of the surface to be cleaned does not decrease even if the grooves are cut out in an uneven manner, and the same cleaning area as before can be secured.

In this way, dust collection performance can be improved without reducing the cleaning area, and since the frictional force with the surface to be cleaned is small, the operability of the floor nozzle is also improved.

Example Examples thereof will be described below with reference to the accompanying drawings.

In FIGS. 1 to 3, the floor nozzle body 4 is a bumper 6.
It is obtained by joining the upper and lower body members 6 and 7 through a suction chamber 9 with a lower opening as a suction port 8 in its front interior, and a turbine chamber 10 in its rear interior. It has been done. The turbine chamber 10 is separated from the suction chamber 9 by a partition wall 11, and the rear portion having an opening 12 is set in an arc shape. 13 is an agitator installed in parallel to the suction chamber 9; 14 is a bearing of the agitator 13 installed on both side walls of the suction chamber 9; and 16 is a fixed brush installed parallel to the rear of the suction port 8. , 16 and 17 are wheels provided at the front and rear of the floor nozzle main body 4 in order to position the suction ports 8 at a constant interval from the surface to be cleaned.

Reference numeral 18 denotes a substantially semi-cylindrical suction joint which rotatably slides on the rear inner surface of the turbine chamber 1o, and a floor nozzle pipe is connected via a ring 20 to a cylindrical connection port 19 protruding from a part of its peripheral wall. 21 is rotatably attached to the floor nozzle pipe 21, and an extension pipe communicating with the suction side of the vacuum cleaner via a hose is detachably connected to the floor nozzle pipe 21.

Reference numeral 22 denotes a turbine which is disposed in the turbine chamber 10 and whose outer periphery is partially surrounded by the suction joint 18, and a shaft body 2 which passes through the rotating shaft on one side of the suction joint 18 and projects to the outside of the turbine chamber.
3 are integrally provided.

Reference numeral 24 denotes a power transmission belt, which transmits 220 rotations of the turbine to the agitator 13 via a booley 26.

Further, the turbine 22 is disposed to be biased toward the side of the turbine chamber 10 where the pelt 24 is disposed. 26 and 27 are two vent holes formed in the partition wall 11, one vent 26 facing the lower half of the turbine 22, and the other vent 27 facing the turbine 22.
2, and directly faces the connection port 19 of the suction joint 18.

28 is a switching lever, and a shielding plate 29 protrudes from a part thereof.
The above vent 26. An opening 30 is formed which selectively communicates with either one of the openings 27.

In the above configuration, when the switching lever 28 is now slid to the right in the diagram and the opening 3o of the shielding plate 29 is made to communicate with the ventilation port 26, the flow flows from the suction port 8 → the suction chamber 9 → the ventilation port 26. The suction air strikes the turbine 22 and then the suction joint 18
The connection port 19 → floor nozzle pipe 21 → extension pipe → hose leads to the vacuum cleaner. Therefore turbine 2
2 rotates, and its rotational force is transmitted to an agitator 13. The agitator 13 has a protrusion band 32 attached to the outer peripheral surface of a rotor 31 in the longitudinal direction. This protrusion band 32 is made of a flexible material such as rubber, and at least one side thereof (in the direction of rotation)
A large number of protrusions 33 are formed on.

Here, a large number of uneven notches 34 are formed at the tip of the protrusion band 32, and the positions of the notches 34 are shifted from each other in pitch as shown in FIG. It is.

Next, the operation in the above configuration will be explained.

Now, when the agitator 13 is rotating clockwise as shown in FIG. 3, the protrusion band 32 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. Thereafter, the protrusion band 32 moves relatively to stroke the surface to be cleaned, and at this time, the dust is squeezed by its numerous protrusions 33 and released from the surface to be cleaned.

The loose dust is effectively guided into the floor nozzle body 4 by the repelling action of the ridge band 32 when it restores itself in the diametrical direction (due to elasticity and centrifugal force) and by the suction force of the vacuum cleaner.

Here, when the protruding strip 32 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. do.

Further, since the protrusion band 32 is band-shaped, it is possible to prevent string-like dust such as lint from becoming entangled.

Here, when the agitator 13 rotates, the protrusion band 3
2 comes into contact with the object to be cleaned. At this time, since the notch 33 is formed in the protrusion band 32, the contact area with the surface to be cleaned is halved, so that the contact resistance is reduced.

Therefore, since there is no need to reduce the rotational speed of the agitator 13, the surface to be cleaned can be struck many times with the ridge band 32, and high dust collection performance can be achieved.

Also, the notches 33 of the protruding band 32 are formed with pinches shifted from each other as shown in the figure, so the protruding band A hits eight parts of the surface to be cleaned, and the protruding band B hits eight parts of the surface to be cleaned. I will be hitting the B section. Therefore, the cleaning area is not reduced, and the dust collection performance can be improved with the same cleaning area as before. In addition, since the contact resistance is small, the operability of the floor nozzle can be improved.

Effects of the Invention As described above, in the present invention, the agitator installed in the main body of the floor nozzle is composed of a rotor and a visible protrusion band provided in the longitudinal direction of the circumferential surface of the rotor, and in addition, at least one of the protrusion band By forming a large number of protrusions on one surface, dust can be accurately released from the surface to be cleaned, and the ability to absorb dust into the floor nozzle body is also significantly improved. Furthermore, unlike conventional plush bristles, it does not get tangled with string-like dust such as lint, which allows it to perform well as an agitator at all times, and also makes maintenance easier.

In addition, uneven notches are formed at the tips of the protruding strips, and the pitches of the notches are shifted from each other, which prevents the agitator's rotational speed from decreasing while maintaining the cleaning area, improving dust collection performance. can be achieved. It is also possible to improve the operability of the floor nozzle.

[Brief explanation of the drawing]

FIG. 1 is a top view of a floor nozzle incorporating an agitator showing an embodiment of the present invention with the upper body member removed;
FIG. 2 is a sectional view of the same-bed nozzle, FIG. 3 is an explanatory view showing the function of the agitator of the present invention, and FIG. 4 is a partial front view showing a conventional ridge band. 4...Floor nozzle main body, 13...Agitator 32...Protrusion band, 33...Protrusion, 34...Notch. Name of agent Patent attorney Shigetaka Awano and one other figure procedural amendment aN Case description 1986 Patent application Name of the invention Name of the person making the correction for the floor nozzle for a vacuum cleaner Relationship to the case Patent application Man

Claims (1)

[Claims] An agitator and its driving source are installed inside the floor nozzle body, and the agitator is constructed by providing a plurality of protrusions made of a flexible material on the circumferential surface of a rotor, and at least one of the protrusions A floor nozzle for a vacuum cleaner in which a large number of protrusions are formed on one surface, the tips of the protrusions are cut out in an uneven shape, and the positions of the protrusions of the protrusions are shifted from each other.