JPH01265927A - Agitator for vacuum cleaner nozzle and its manufacture - Google Patents

Abstract

PURPOSE:To permit an agitator to work with its full function at all times by forming agitator installed inside the body of a floor nozzle from a rotor and a flexible embossed band, which is provided in a single piece at the circumferential surface of this rotor in the longitudinal direction and equipped with a number of bosses at least on its one surface. CONSTITUTION:A rotor 28 with hollow in the center and an embossed band 29 furnished on the peripheral surface of this rotor in parallel with its axis and having a number of bosses at least on one surface are formed from a flexible material consolidated in a single piece. Then the hollow part of this rotor 28 is fitted on the rotary shaft, and the rotor is twist deformed, and this deformation is retained by the rotary shaft. This allows the agitator to work with its full function at all times to permit easy forming of agitator.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an agitator used in a floor nozzle for a vacuum cleaner and a method for manufacturing the same.

Prior art The agitator of this type of nozzle has a groove bottom with brush bristles planted on the circumferential surface of the rotor, and the bristles scrape up dust on the surface to be cleaned, such as a carpet, and the agitator is used as a vacuum cleaner. The suction force was used to introduce it into the floor nozzle.

Problems to be Solved by the Invention However, in the floor nozzle agitator mentioned above, string-like objects such as lint get entangled with the brush bristles, and eventually wrap around the entire agitator, preventing it from losing its intended function, and it is difficult to remove it. It took a lot of effort. Furthermore, there were problems such as the rotor cracking due to distortion caused by the brush bristles.

The present invention solves these conventional problems, allows the agitator to always function well, and allows the agitator to be easily molded.

Means for Solving the Problems In order to achieve the above object, a first means of the present invention includes a rotor having a rotation shaft in the center thereof, and a rotor provided in a spiral shape on a curved surface of the rotor, The rotor and the protrusion band are integrally molded from a flexible material, and as a second means,
A rotor with a hollow center and a protrusion strip that protrudes from the circumferential surface of the rotor parallel to the center line and has a large number of protrusions on at least one surface are integrally molded from a flexible material, and then rotated. The rotor is torsionally deformed by fitting the hollow part of the rotor onto the shaft, and then the deformation of the rotor is held by the rotating shaft to manufacture an agitator.

The ligament in the action agitator has at least one side (
Since it is made of a flexible material, it blends well with the surface to be cleaned and reliably releases dust, and this loose dust is removed by the projections. The floor nozzle 7 can be effectively removed by the restoring force of the band and the suction force of the vacuum cleaner.
It is something that is sucked into the body. Furthermore, compared to brush bristles, the tangle of dust on the ridges is much less, and furthermore, there is no damage to the rotor.

The agitator can be manufactured by a simple process of twisting and deforming the rotor and holding the deformation by the rotating shaft.

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

In Figures 1 to 7, the floor nozzle body 1 is the bumper 2.
It is obtained by joining the upper and lower body members 3 and 4 via a suction chamber 6 with a lower opening as a suction port 6 in its front interior, and a turbine chamber 7 in its rear interior. It is. The turbine chamber 7 is separated from the suction chamber 6 by a partition wall 8, and the rear portion having an opening 9 is set in an arc shape. 1o is an agitator installed parallel to the suction chamber 6; 111 is a bearing of the agitator 10 installed on both side walls of the suction chamber 6; 12 is a fixed support installed parallel to the rear of the suction port 5; The brushes 13 and 14 are attached to the floor nozzle body 1 in order to position the suction port 6 at a certain distance from the surface to be cleaned.
These are wheels installed at the front and rear of the vehicle. Reference numeral 15 denotes a substantially semi-cylindrical suction joint that rotatably slides on the rear inner surface of the turbine chamber 7, and a floor nozzle pipe is connected to a cylindrical connection port 16 protruding from a part of the peripheral wall via a ring 17. 18 is rotatably attached, and an extension pipe connected to the suction side of the vacuum cleaner via a hose is detachably connected to the floor nozzle pipe 18.

Reference numeral 19 denotes a turbine disposed in the turbine chamber 7, whose outer periphery is partially surrounded by the suction joint 16, and a shaft body 2o that passes through the rotating shaft on one side of the suction joint 15 and protrudes to the outside of the turbine room.
are integrated.

A power transmission belt 21 transmits the rotation of the turbine 19 to the agitator 10 via a pulley 22.

In addition, the turbine 19 is disposed offset toward the side of the turbine chamber 7 where the belt 21 is disposed. 23 and 24 are two vent holes formed in the partition wall 8, one of which is the vent hole 23, which is connected to the turbine 19.
The other ventilation port 24 faces the lower half of the turbine 19 , not facing the turbine 19 , but directly facing the connection port 16 of the suction joint 15 .

26 is a switching lever, and a shielding plate 2 protrudes from a part of the switching lever.
6 is formed with an opening 27 that selectively communicates with either one of the vent holes 23 and 24 described above.

In the above configuration, when the switching lever 25 is now slid to the right in FIG. The suction air collides with the turbine 19, and then flows through the connection port 16 of the suction joint 16, the floor nozzle pipe 18, the extension pipe, and the hose to reach the vacuum cleaner. Therefore, the turbine 19 rotates, and its rotational force is transmitted to the agitator 1o.

Incidentally, the agitator 10 is constructed by forming a protrusion band 29 in a longitudinal spiral direction on the outer peripheral surface of the rotor 28. The rotor 28 and the protrusion band 29 are integrally made of a flexible material such as rubber, and have a large number of protrusions 30 formed on at least one surface thereof (the side surface in the direction of rotation).

The rotor 28 is molded using the rotating shaft 31 as a core. A central shaft 32 is fixed to both ends of the rotating shaft 31, and is rotatably supported by a bearing 11. The pulley 22 and the central shaft 32 are fixed together.

Now, when the agitator 10 is rotating clockwise as shown in FIG. 7, the protrusion band 29 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 protruding strip 29 moves relatively to stroke the surface to be cleaned, and at this time, the dust is squeezed by its numerous protrusions 3o and released from the surface to be cleaned. Free dust is in the ridge band 2
It is effectively guided into the floor nozzle body 1 by the repelling action of the diaphragm 9 when it is restored in the diametrical direction (due to elasticity and centrifugal force) and by the suction force of the vacuum cleaner. Also, the protrusion belt 29
Since it is band-shaped, it can also prevent string-like dust such as lint from getting entangled.

Next, the manufacture of the agitator 10 will be described.

First, the rotor 28 and the protrusion band 29 are integrally molded from a flexible material such as rubber. At this time, the protruding strip 29 is formed flush with the center axis of the rotor 28 in consideration of moldability, and the center of the rotor 28 is hollow. Next, the rotor 28 is externally fitted onto the outer periphery of the rotating shaft 31, and then the rotor 28 is twisted at a certain angle to deform it. Naturally, at this time, the protrusion band 29 is also twisted to take on a spiral shape.

Thereafter, the deformation holding means holds the rotor 28 in the deformed state at the rotating shaft 31. The deformation holding means has a lip 34 that engages with a groove 33 in the longitudinal direction of the circumferential surface of the rotating shaft 31 to prevent rotation. Convex portion 36 from the end face of J-22゜36
are provided in a protruding manner, and the convex portions 36 are engaged with concave portions 37 provided at both ends of the rotor 28.

Of course, the rotor 28 may be bonded to the rotating shaft 31 with an adhesive as a deformation holding means.

In the above embodiment, a turbine was used as the drive source for the agitator, but of course a motor may be used instead of the turbine.

Effects of the Invention As described above, in the present invention, the agitator disposed inside the floor nozzle body is composed of a rotor and a flexible protruding band integrally provided in the longitudinal direction of the circumferential surface of the rotor. By forming a large number of protrusions on at least one surface, dust can be accurately released from the surface to be cleaned, and unlike conventional brush bristles, string-like dust such as lint does not get entangled, and it also has a protrusion band. After molding the rotor, it is twisted around the main rotating shaft,
Since the protrusion band is formed into a spiral shape, the protrusion band is straight during molding, and can be easily molded using a simple mold.

[Brief explanation of the drawing]

Fig. 1 is a top view of a floor nozzle according to an embodiment of the present invention with the upper main body member removed, Fig. 2 is a sectional view, and Fig. 4 is an enlarged sectional view of the main part. figure,
The sixth figure is a perspective view of the main part of the agitator, FIG. 6 is a perspective view of the pulley, and FIG. 7 is an explanatory view of the operation. 10...Agitator-128... Group/Rotator,
29... Beam strip, 31... Rotation axis. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 4
Figure j031 Figure 5 73I

Claims (2)

[Claims] (1) Consisting of a rotor with a rotating shaft in the center, and a protrusion band spirally provided on the circumferential surface of the rotor and having a large number of protrusions on at least one surface, the rotor and protrusions The strip is an agitator for a floor nozzle for a vacuum cleaner that is integrally molded from a flexible material. (2) A rotor with a hollow center and a protrusion band that protrudes from the circumferential surface of the rotor parallel to the center line and has a large number of protrusions on at least one surface are integrally molded from a flexible material. A method for manufacturing an agitator for a floor nozzle for a vacuum cleaner, in which the rotor is torsionally deformed by externally fitting the hollow part of the rotor onto the rotating shaft, and then the deformation of the rotor is held by the rotating shaft.