JP2008161259A - Floor nozzle for vacuum cleaner and electric vacuum cleaner provided with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor nozzle for a vacuum cleaner which is improved in dust removing performance and having reduced cleaning noise. <P>SOLUTION: A rotor 1 is structured so that a columnar rotor body 2 is provided with cleaning pieces 3 having symmetrically paired inverted V shape about the center in the length direction of a rotor body 2 on the outer periphery in the axial direction, and the rotor 1 is rotated downward relative to the paired inverted V shape. Therefore, the action of the cleaning pieces 3 of paired inverted V shape caused by the rotation of the rotor 1 scrapes dust so as to be collected to the center part having a strong suction force to improve dust removing performance. Also, since the cleaning pieces 3 and the direction of air are angled by the inclination of the cleaning pieces 3 of inverted V shape and air flow is smoothed, wind noise is reduced and cleaning noise is reduced. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a floor nozzle for a vacuum cleaner having a rotary rotor that functions to scrape dust from tatami mats and carpets by rotating, and a vacuum cleaner equipped with the same.

Conventionally, a floor nozzle for a vacuum cleaner is generally provided with a rotary rotor in which a single or a plurality of blades and brushes are arranged on a rotor body. In recent years, various ingenuity has been made to improve the removal performance and durability performance, and in order to improve the dusting performance, a means for increasing the efficiency by providing a plurality of recesses on the end face of the blade has also been proposed ( For example, see Patent Document 1).
Japanese Patent No. 2892780

  However, in the conventional configuration, the dust removal efficiency is improved by the action of the concave portion of the blade, but if the concave portion is made larger, the contact length between the blade and the surface to be cleaned is reduced, and conversely, the dust scraping performance is lowered. Therefore, it is necessary to make the concave portion as small as possible. However, if the concave portion is made small, wind noise due to rotation of the rotor body becomes relatively large, and there is a problem that noise during cleaning becomes large.

  This invention solves the said conventional subject, and it aims at providing the floor nozzle for vacuum cleaners which can improve the noise removal performance, and can reduce the noise at the time of cleaning, and a vacuum cleaner provided with the same. To do.

  In order to solve the above-described conventional problems, the floor nozzle for a vacuum cleaner according to the present invention is formed in a C shape with the center in the longitudinal direction of the rotor body as the axis of symmetry on the outer periphery in the axial direction of the cylindrical rotor body. Thus, a cleaning piece is provided to constitute a rotary rotor, and the rotary rotor is rotated downward from the upper side of the letter C shape.

  This makes it possible to improve the dust removal performance by scraping dust away from the strong central portion by the action of the cleaning piece paired in a square shape by the rotation of the rotary rotor, and the square shape. The inclination of the shaped cleaning piece makes an angle in the direction of the wind with the cleaning piece and the flow of the wind becomes smooth, so that wind noise is reduced and noise during cleaning can be reduced.

  Moreover, the vacuum cleaner provided with the floor nozzle for vacuum cleaners of the present invention improves dust removal performance during cleaning, and reduces noise.

  The floor nozzle for a vacuum cleaner of the present invention and the electric vacuum cleaner provided with the same can improve dust removal performance and reduce noise during cleaning.

  The first invention comprises a rotating rotor by providing a pair of cleaning pieces in a C shape on the outer periphery in the axial direction of a cylindrical rotor body, with the center in the length direction of the rotor body as a symmetry axis, By using this rotary rotor as a vacuum cleaner floor nozzle that rotates from the top to the bottom of the C shape, dust is sucked by the action of the cleaning piece paired in a C shape by the rotation of the rotary rotor. Scraping closer to the strong central part to improve dust removal performance, and the angle of the C-shaped cleaning piece makes an angle between the direction of the cleaning piece and the wind, making the wind flow smooth Therefore, wind noise is reduced and noise during cleaning can be reduced.

  According to a second aspect of the present invention, in particular, in the first aspect of the present invention, a plurality of pairs of C-shaped cleaning pieces are provided on the outer periphery in the axial direction of the rotor body so that dust is scraped out by the respective cleaning pieces. As a result, the dust removal performance is further improved because it is more reliably brought to the central portion where the suction force is strong.

  According to a third invention, in particular, in the second invention, in the cleaning pieces provided in a plurality of pairs on the outer periphery in the axial direction of the rotor body, the adjacent cleaning pieces each have an overlap portion with respect to the length direction of the rotor body. By providing as described above, dust is scraped out without any leakage in the length direction of the rotor body, and the dust removal performance is further improved.

  According to a fourth aspect of the invention, in particular, in any one of the first to third aspects, the cleaning piece provided on the outer periphery in the axial direction of the rotor body forms a strip, and a plurality of strips are provided in the circumferential direction of the rotor body. Since each time the rotor body makes one rotation, the dust is more reliably discharged to the central portion where the suction force is strong, and the dust removal performance is further improved.

  In the fifth aspect of the invention, in particular, in any one of the first to fourth aspects of the invention, since the cleaning piece is configured by a flexible blade, the cleaning piece bends and dust is more reliably discharged. Further, the dust removal performance is improved.

  In a sixth aspect of the invention, in particular, in the fifth aspect of the invention, the blade is made of a material containing at least hydrogenated nitrile rubber, so that the rotary rotor can be excellent in wear resistance and durability.

  In the seventh aspect of the invention, in particular, in any one of the first to fourth aspects of the invention, since the cleaning piece is constituted by a brush, the wind passes between the bristles of the brush. Since wind noise is reduced, noise during cleaning can be further reduced.

  In an eighth aspect of the invention, in particular, in any one of the first to seventh aspects of the invention, the cleaning piece is disposed so that the entire center of gravity position coincides with the rotation axis of the rotor body. It can rotate stably without blurring and further improve the dust removal performance.

  In the ninth aspect of the invention, in particular, in any one of the first to eighth aspects of the invention, since the rotating rotor rotates using the suction air of the cleaner as a driving force, an external driving source is not required. Becomes lightweight and can be highly useful.

  In the tenth aspect of the invention, in particular, the vacuum cleaner provided with the floor nozzle for a vacuum cleaner in any one of the first to ninth aspects improves dust removal performance during cleaning and reduces noise. Will be removed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 shows a rotary rotor of a floor nozzle for a vacuum cleaner according to Embodiment 1 of the present invention.

  As shown in FIG. 1 (a), the floor nozzle for a vacuum cleaner in the present embodiment is arranged on the outer circumference in the axial direction of a cylindrical rotor body 2 with the center in the length direction of the rotor body 2 as the axis of symmetry. A rotating rotor 1 is formed by providing a wavy cleaning piece 3 in a pair of letter shapes, and the rotating rotor 1 is rotated downward (arrow direction) from the upper side of the letter C shape. .

  In the present embodiment, four pairs of cleaning pieces 3 are arranged sequentially from the center to the outside with the lengthwise center of the rotor body 2 as the axis of symmetry.

  Then, as shown by the broken line in FIG. 1 (b), four groups of four cleaning pieces arranged as a single line are arranged in the same manner at a position symmetrical to the rotation axis of the rotor body 2, and the total 2 are arranged. The number is not limited to 2 and may be more.

  Further, as shown in FIG. 1B, the adjacent cleaning pieces 3 are each provided with an overlap portion a in the length direction of the rotary rotor 1.

  The cleaning piece 3 is constituted by a flexible blade. In particular, the blade is made of a material containing at least hydrogenated nitrile rubber (HNBR), and the rotary rotor 1 is excellent in wear resistance and durability.

  Next, the structure of the floor nozzle for vacuum cleaner which attached the rotary rotor 1 which arrange | positioned the above cleaning piece 3 is shown in FIG.

  The rotary rotor 1 shown in FIG. 1 is attached to a bearing (not shown) of the floor nozzle main body 21 after both ends of the rotor main body 2 are closed with caps with a rotation shaft. A first air inlet 23 is open on the lower surface of the floor nozzle body 21 to which the rotary rotor 1 is attached, and the dust on the floor is sucked from here. In addition, a second air inlet 24 is opened below the front surface of the floor nozzle body 21, and the rotary rotor 1 is rotated by the wind force of the intake air from here. In addition, although the arrow in a figure has shown the rotation direction of the rotary rotor 1, this corresponds with the rotation direction shown by the arrow of Fig.1 (a). The floor nozzle body 21 is movable by wheels 22.

  In FIG. 2, although not shown, when the vacuum cleaner body is operated, the floor nozzle body 21 is sucked from the first air inlet 23 and the second air inlet 24 in a state where the floor nozzle body 21 is separated from the floor. Since the first suction port 23 is almost closed in a state where is placed on the floor, most of the air is sucked from the second suction port 24.

  The intake air sucked from the second intake port 24 is introduced below the rotation axis of the rotary rotor 1, and the rotary rotor 1 rotates in the direction of the arrow by the wind force. At this time, the cleaning piece 3 disposed on the outer periphery of the rotor body 2 sweeps out dust from the floor surface via the first air inlet 23, and the scraped dust rides on the intake air and is not shown in the drawing. It is led to the dust collection chamber of the machine body.

  At this time, since the cleaning piece 3 is arranged in a square shape, first, dust is scraped out from a wide portion on the lower side of the square shape, and according to the rotation of the rotary rotor 1, the square shape. The dust approaches the narrow part on the upper side, that is, the center part of the floor nozzle main body 21. Here, since the suction port connected to the dust collecting chamber of the cleaner body is open at the center of the floor nozzle body 21 and the suction force is maximized, dust is efficiently sucked.

  In order to investigate the effect of the present embodiment using the above floor nozzle for a vacuum cleaner, a dust removal experiment and noise measurement were performed.

  First, in the dust removal experiment, No. 5 sand was used as the dust, and 10 g was spread on the evaluation carpet in a rectangular shape having a width of 20 cm and a depth of 10 cm.

  Set the vacuum cleaner to the strong mode, clean the carpet once by reciprocating at a speed of 50 centimeters per second, weigh the No. 5 sand collected in the dust collection chamber, and calculate the average value 10 times. It was supposed to be evaluated. In addition to the rotating rotor 1 shown in FIG. 1, the rotating rotor 31 shown in FIG. 3 was used as a control experiment. In this case, the cleaning piece 32 (blade) was separated by the notch 33 and arranged parallel to the length direction of the rotor body 34 and perpendicular to the radial direction. And this cleaning piece 32 is made into 1 item | row, and 3 items | rows are arrange | positioned at equal angles in the circumferential direction of the rotor main body 2. FIG. At this time, the total length of the cleaning piece 32 in contact with the floor surface was the same as the cleaning piece 3 of the rotary rotor 1 according to the present embodiment.

  As a result of the experiment, an average of 9.34 g of dust was collected in the rotary rotor 1 of the present embodiment. On the other hand, in the rotating rotor 31 of the control experiment, the average dust collection was 9.21 g, and the dust collection capability was 0.13 g higher in this embodiment.

  This is because, in the rotating rotor 31 of the control experiment, dust is scraped out while remaining in place, whereas in the rotating rotor 1 of the present embodiment, as shown in the conceptual diagram of FIG. Is arranged in a square shape and rotates from the top to the bottom of the square shape, so that when dust is scraped, the dust moves to the central part where the suction force is strong as shown by the arrow. This is because the removal performance is improved.

  Next, a noise experiment was conducted. In the noise evaluation, as shown in FIG. 5, a tatami mat 52 for evaluation is installed in the soundproof room 51, the floor nozzle body 21 is placed on the tatami 52, the cleaner body 54 is placed outside the soundproof room 53, and the wall of the soundproof room. The hose 55 was arranged in each hole, and the floor nozzle main body 21 and the cleaner main body 54 were directly connected by the hose 55 without using the extension pipe. The microphone 56 to be measured was a point 1 meter above the floor nozzle body 21. The vacuum cleaner was operated in the strong mode, and the noise was measured when it became stable after the operation.

  As a result of the experiment, the noise was 77.2 dB in the rotary rotor 1 of the present embodiment and 82.3 dB in the rotary rotor 31 of the control experiment. Therefore, the rotary rotor 1 in the present embodiment has a low 5.1 dB noise.

  This is because if the cleaning piece 32 is arranged substantially parallel to the length direction of the rotor body 34 and substantially perpendicular to the radial direction like the rotary rotor 31 of the control experiment, the wind will hit the cleaning piece 32 and As a result, while the wind noise increases when the rotary rotor 31 rotates, the cleaning piece 3 and the direction of the wind are arranged by inclining the cleaning piece 3 in a C shape as in the present embodiment. This is because the wind is smooth and the wind noise is reduced.

  Note that, as in the present embodiment, the adjacent cleaning pieces 3 are provided with overlapping portions a provided in the length direction of the rotor body 2, respectively, so that the length of the rotor body 2 is determined. Since dust is scraped out without any leakage, the dust removal performance is further improved.

  Further, as in the present embodiment, the cleaning strip 3 group is arranged at a position symmetrical to the rotation axis of the rotor main body 2 at a position symmetrical to the rotation axis of the rotary rotor 1. The entire center of gravity position coincides with the rotation axis of the rotary rotor 1, so that the rotary rotor 1 rotates stably without shaking, and the dust removal performance can be further improved.

  Further, as in the present embodiment, the cleaning piece 3 (blade) is made of a material containing at least hydrogenated nitrile rubber (HNBR), so that the floor nozzle for a vacuum cleaner excellent in wear resistance and durability can be obtained. The rotary rotor 1 can be used.

  Furthermore, in the present embodiment, the rotary rotor 1 rotates with the suction air of the vacuum cleaner as a driving force and does not require an external drive source. Therefore, the floor nozzle is light, and the vacuum cleaner is highly useful. can do.

  In this embodiment, the wave-shaped cleaning piece 3 is arranged in a letter C shape, but as shown in FIG. 6, a rectangular and flat cleaning piece 62 is arranged in a letter C shape and rotated. The rotor 61 may be configured.

  Further, in the present embodiment, only the cleaning piece 3 is arranged, but as shown in FIG. 7, in addition to the cleaning piece 3, a brush 72 and the like are arranged in parallel as a second cleaning piece. If the rotary rotor 71 is configured, the dust removal performance is further improved by a synergistic effect.

  Further, in the present embodiment, the cleaning piece 3 is arranged linearly in parallel with the rotation axis of the rotor body 2, but the cleaning piece 3 is arranged in a V shape as shown in FIG. If the rotary rotor 81 is configured, the contact between the cleaning piece 3 and the floor becomes smooth, and the dust removal performance is further improved.

  As shown in FIG. 9, in addition to the configuration of FIG. 8, if the brush 92 is further arranged in parallel with the V shape as the second cleaning piece and the rotary rotor 91 is configured, in addition to the synergistic effect, As shown in the conceptual diagram of FIG. 10, it assists that the dust approaches the central portion, and the dust removal performance is further improved.

(Embodiment 2)
FIG. 11 shows the rotary rotor of the vacuum cleaner floor nozzle according to the second embodiment of the present invention. Since the basic configuration is the same as that of the first embodiment, only the differences will be described.

  In the present embodiment, the cleaning piece 12 in the first embodiment is used as a brush, and the cleaning piece 12 is configured as the rotary rotor 11.

  Also in the present embodiment, a dust removal experiment and noise measurement were performed as in the first embodiment.

  As a result of the dust removal experiment, the average of 10 times was 9.28 g, which was slightly lower than that of the first embodiment, but the noise was 76.5 dB, and the noise was further reduced by 0.7 dB from the first embodiment. did.

  Since the wind passes between the brush hairs by configuring the cleaning piece 12 with a brush, the wind noise during rotation of the rotary rotor 11 is reduced. Therefore, it is possible to further reduce noise during cleaning.

  As described above, the floor nozzle for a vacuum cleaner according to the present invention and the vacuum cleaner equipped with the nozzle can improve the dust removal performance and reduce noise during cleaning. It can be applied as a vacuum cleaner.

(A) Perspective view showing rotating rotor of vacuum cleaner floor nozzle in embodiment 1 of the present invention (b) Front view of the rotating rotor Configuration of floor nozzle for vacuum cleaner with the same rotating rotor The perspective view which shows the rotary rotor used for the control experiment in the floor nozzle for the vacuum cleaner Conceptual diagram showing the movement of dust in the rotary rotor of the floor nozzle for the vacuum cleaner Experimental configuration diagram of noise measurement in the floor nozzle for the vacuum cleaner The perspective view which shows the rotation rotor of the other example 1 of the floor nozzle for the same vacuum cleaner The perspective view which shows the rotation rotor of the other example 2 of the floor nozzle for the same vacuum cleaner The perspective view which shows the rotation rotor of the other example 3 of the floor nozzle for the same vacuum cleaner The perspective view which shows the rotation rotor of the other example 4 of the floor nozzle for the same vacuum cleaner The conceptual diagram which shows the movement of the dust in the rotary rotor of the other example 4 of the floor nozzle for the vacuum cleaner The perspective view which shows the rotation rotor of the floor nozzle for vacuum cleaners in Embodiment 2 of this invention.

Explanation of symbols

1, 11, 61, 71, 91 Rotating rotor 2 Rotor body 3, 12, 62 Cleaning piece 21 Floor nozzle body 72, 92 Brush

Claims (10)

On the outer periphery in the axial direction of the cylindrical rotor body, a rotary piece is formed by providing a pair of cleaning pieces in a C shape with the longitudinal center of the rotor body as the axis of symmetry, and this rotary rotor is Floor nozzle for vacuum cleaner that is rotated from top to bottom in a letter shape. The vacuum cleaner floor nozzle according to claim 1, wherein a plurality of pairs of cleaning pieces paired in a C shape are provided on an outer periphery in the axial direction of the rotor body. The vacuum cleaner floor according to claim 2, wherein a plurality of pairs of cleaning pieces are provided on the outer periphery in the axial direction of the rotor body, and the adjacent cleaning pieces are provided so as to have an overlap portion with respect to the length direction of the rotor body. nozzle. The vacuum cleaner floor nozzle according to any one of claims 1 to 3, wherein the cleaning piece provided on the outer periphery in the axial direction of the rotor body forms a strip, and a plurality of strips are provided in the circumferential direction of the rotor body. The floor nozzle for a vacuum cleaner according to any one of claims 1 to 4, wherein the cleaning piece is configured by a blade having flexibility. The floor nozzle for a vacuum cleaner according to claim 5, wherein the blade is made of a material containing at least hydrogenated nitrile rubber. The cleaning nozzle is a floor nozzle for a vacuum cleaner according to any one of claims 1 to 4, wherein the cleaning piece is constituted by a brush. The cleaning nozzle is a floor nozzle for a vacuum cleaner according to any one of claims 1 to 7, wherein the cleaning piece is disposed so that the position of the center of gravity as a whole coincides with the rotation axis of the rotor body. The floor nozzle for a vacuum cleaner according to any one of claims 1 to 8, wherein the rotary rotor rotates using the suction air of the vacuum cleaner as a driving force. The vacuum cleaner provided with the floor nozzle for vacuum cleaners of any one of Claims 1-9.