JPH11299712A - Vacuum cleaner floor suction - Google Patents

Abstract

(57) [Problem] To provide a suction tool for a floor of a vacuum cleaner which is excellent in operability while reducing the deformation of the fur of a carpet while ensuring suction performance on a floor surface. SOLUTION: A case bottom portion 4 which is composed of a rear lower case 8 and a front lower case 6, and has a gap provided between the rear lower case 8 and the floor surface 14.
, A rotating brush 18, and a first end where the tip is in contact with the floor surface 14.
Main body 1 having a seal lip 12 and a second seal lip 13 and the like, and a joint portion 5 connected to the main body 1
The bottom surface of the rear lower case 9 is positioned above the bottom surface of the front lower case 6, and the gap distance c between the bottom surface and the floor surface 14 is determined by the distance between the bottom surface of the front lower case 6 and the floor surface 14. It was formed larger than the gap a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor suction device for a vacuum cleaner, and more particularly, to a floor suction device for a vacuum cleaner having improved operability and ease of use.

[0002]

2. Description of the Related Art FIG. 7 is a longitudinal sectional view showing an example of a floor suction device of a conventional vacuum cleaner, FIG. 8 is a longitudinal sectional view in which main parts thereof are enlarged, and FIG. 9 is a bottom view of FIG. This floor suction tool moves the suction tool body 1 along the floor surface 14 with a gap kept between the floor suction surface and the floor surface 14. At this time, the first seal lip 12 and the second seal lip 13 provided on the front lower case 6 of the case bottom portion 4 make the vicinity of the suction port 7 a vacuum state to enhance suction performance, and rotate the rotating brush 18 at high speed. Then, the fluff of the carpet is scraped off, and the dust entangled with the fluff of the carpet and the dust lurking in the back of the carpet are scraped out. Thus, the dust on the floor surface 14 is sucked from the suction port 7 provided in the front lower case 6 and collected in the main body (not shown) via the joint portion 5. The width W ₁ of the suction port 7 and the first seal lip 1
The relationship between the width W ₂ and the width W ₂ is set to W ₁ <W ₂ .

[0003]

According to the floor suction device of the vacuum cleaner constructed as described above, the bottom surface of the front lower case 6 and the bottom surface of the rear lower case 9 are on the same plane, When cleaning the carpet surface, the fur of the carpet is pressed against the floor surface more than necessary particularly by the bottom surface of the rear lower case 9, and the appearance of the carpet surface after cleaning deteriorates due to the collapse of the fluff of the carpet. .

[0004] In addition, when the bristle of the carpet is crushed, the contact between the lower end of the rotating brush 18 and the bristle of the carpet decreases, and dust entangled with the bristle of the carpet can be sufficiently scraped out by the rotating brush 18. become unable.

Further, in recent years, vacuum cleaners having a high suction force have become the mainstream, but especially on a carpet surface, suction by the suction tool main body 1 has become intense, and operability has deteriorated. In other words, when the bristle feet of the carpet are crushed by the bottom surface of the rear lower case 9, resistance to operability is generated due to friction between the crushed bristle feet and the bottom surface of the rear lower case 9. For this reason, the gap 20 between the case bottom surface 4 and the floor surface 14 must be increased, and even a vacuum cleaner having a high suction force cannot exhibit its original high suction performance. There was a problem.

There is also a suction tool equipped with a large-diameter wheel in order to improve the operating force reduced by vigorous suction between the suction tool body 1 and the floor surface 14. However, the weight of the suction tool itself increases. In some cases, the operability during cleaning was adversely affected.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has an excellent operability in which the deformation of the rugs of the carpet is reduced while ensuring the suction performance on the floor surface. The purpose of the present invention is to obtain a floor suction tool.

[0008]

SUMMARY OF THE INVENTION A floor suction device for a vacuum cleaner according to the present invention comprises a rear lower case and a front lower case having a suction port, and has a bottom surface provided with a gap between the floor surface. , A rotary brush provided in the vicinity of the suction port on the bottom surface of the case, and a first seal lip and a second seal lip which are attached with the suction port interposed therebetween and each end of which is in contact with the floor surface. And a joint connected to the suction tool main body.The bottom surface of the rear lower case is located above the bottom surface of the front lower case, and the gap between the bottom surface and the floor surface is It was formed larger than the gap between the bottom and the floor.

In addition, the gap between the rear lower case and the floor is
5 mm to 15 mm. Further, an inclined surface is provided between the bottom surface of the rear lower case and the joint-side bottom surface of the front lower case.

[0010]

FIG. 1 is a longitudinal sectional view of a first embodiment of the present invention, FIG. 2 is a longitudinal sectional view of a main part of FIG. 1, and FIG. 3 is a bottom view of FIG. is there. 1 is a suction tool main body of a suction tool for a floor of a vacuum cleaner, 2 is a main body case which covers a side part from the top of the suction tool main body 1, 3 is a bumper arranged in front of the suction tool main body 1, and 4 is a suction tool. It is a case bottom portion that covers the bottom portion and the like of the tool body 1. Reference numeral 5 denotes a joint attached to the rear part of the suction tool main body 1.

Reference numeral 6 denotes a front lower case which is located on the bumper 3 side of the case bottom 4 and is attached from the front to the bottom. The front lower case 6 has a suction port 7 which opens along the longitudinal direction.
A projecting portion 8 projecting upward is formed on the joint portion 5 side. 9 is a rear lower case located on the joint part 5 side of the case bottom part 4. The bottom surface of the rear lower case 9 is located above the bottom surface of the front lower case 6, and a step 10 is formed between the rear lower case 9 and the bottom surface of the front lower case 6. An upright surface 11 is formed between the bottom surface of the projecting portion 8 and the bottom surface of the rear lower case 9.

Reference numeral 12 denotes a first seal lip attached to the bottom surface of the projecting portion 8 along the longitudinal direction of the projecting portion 8 of the front lower case 6, and reference numeral 13 denotes an integral part of the bumper 3 along the longitudinal direction of the bumper 3. The first and second seal lips 12 and 13 are attached to the front lower case 6.
Is provided so as to sandwich the suction port 7 provided in the floor surface 14.
In the cleaning, the vicinity of the suction port 7 is held in a vacuum state to secure a suction force.

Reference numeral 15 denotes a front wheel provided on the front side of the suction tool main body 1, and reference numeral 16 denotes a rear wheel provided on the rear side of the suction tool main body 1. Reference numeral 17 denotes a suction portion provided in the suction tool main body 1, and a suction port 7 is provided.
The dust sucked from the hopper is guided through the suction part 17 toward the pipe, hose, and vacuum cleaner main body (not shown).

Reference numeral 18 denotes a rotary brush provided in the suction portion 17 for scraping and cleaning dust entangled with the bristle feet of the carpet by high-speed rotation. Reference numeral 19 denotes a blade of the rotary brush 18. The rotating brush 18 is installed at a position where the lower end of the blade 19 of the rotating brush 18 does not contact the floor surface 14, and the lower end of the blade 19 contacts the floor surface 14 so that the floor surface can be cleaned during cleaning. 14 is not damaged.

Next, the lowermost surface of the case bottom 4 and the floor 14
Will be described in detail. As shown in FIG. 1, the distal ends of the first and second seal lips 12, 13 are
The case bottom surface portion 4 is protruded downward by a distance a from the lowermost surface of the case bottom portion 4 so that the front end portion contacts the floor surface 14. In this way, a first gap 20 of, for example, a = about 2 mm is formed between the bottom surface of the case bottom portion 4 and the floor surface 14, thereby increasing the degree of vacuum near the suction port 7.

The reason why the first gap 20 is set to a = about 2 mm is that it is a preferable value from the relationship between the suction performance and the operability. That is, if the first gap 20 provided between the floor surface 14 and the suction port 7 is large, the operability is improved when cleaning the carpet, but the degree of vacuum cannot be secured between the carpet surface and the suction. This has a negative effect on performance. On the other hand, if the first gap 20 is small, the degree of vacuum increases during cleaning of the carpet and the suction performance increases, but the operability on the carpet surface is significantly reduced.

Next, the bottom surface of the rear lower case 9 and the floor surface 14 will be described.
Will be described in detail. A step gap 21 having a distance b is formed between the bottom surface of the rear lower case 9 and the bottom surface of the front lower case 6. In this manner, the second bottom formed between the bottom surface of the rear lower case 9 and the floor surface 14 is formed.
Is a distance a of the first gap 20 and a step gap 21.
The distance c is the sum of the distances b, and the second gap 22 is larger than the first gap 21.

The operation of the first embodiment configured as described above will be described. Bottom part 4 of case for suction device for floor of vacuum cleaner
Is moved along the floor surface 14 in the front and rear directions A and B to suck dust on the carpet. That is, the first seal lip 12 attached to the front lower case 6 and the second seal lip 13 attached to the bumper 3 evacuate the vicinity of the suction port 7 to improve the suction performance near the suction port 7, and By rotating the blade 19 of the rotating brush 18 at a high speed,
The fluff of the carpet is squeezed and entangled with the fluff, or the dust lurking behind it.

At this time, the step portion 10 is provided on the rear lower case 9.
After the first seal lip 12 moves, particularly after moving in the rear part B direction, the second gap 22
Because of this, the carpet fluff is not crushed more than necessary, the appearance quality is not reduced due to the collapse of the carpet fluff, and the contact area between the blade 19 and the carpet fluff is not reduced. Sufficient scraping and suction can be obtained, and resistance to operability due to friction between the bristle feet of the carpet and the rear lower case 9 does not occur. Thus, the front lower case 6
The dust of the carpet is efficiently sucked into the suction part 17 from the suction port 7 provided in the carpet, and the sucked dust passes through the joint part 5 and is collected in the direction of the main body (not shown).

According to the first embodiment, the first seal lip 12 and the second seal lip 13 sufficiently secure the degree of vacuum for maintaining the suction performance when the floor 14 is cleaned. Further, in the carpet cleaning, dust entangled with the bristle feet of the carpet can be scraped out by the rotating brush 18 rotating at a high speed. Further, since the step portion 10 is provided between the bottom surface of the front case 6 and the bottom surface of the rear lower case 9, the carpet is not crushed after the rear lower case 9 passes, and the rotating brush The suction by scraping out 18 is efficiently performed, and there is no resistance to operability due to friction between the bristle feet of the carpet and the rear lower case 9.

[Second Embodiment] In the first embodiment, the distance c of the second gap 22 provided between the bottom surface of the rear lower case 9 and the floor surface 14 is c. Distance c
Is, for example, 5 mm to 15 mm. Other configurations and operations are substantially the same as those described in the first embodiment, and thus description thereof is omitted.

According to the second embodiment, since the distance c of the second gap 22 is set to 5 mm to 15 mm, in addition to the effects shown in the first embodiment, the floor surface 14 of the shaft 16a of the rear wheel 16 Operability of the suction tool can be ensured without mounting a large-diameter wheel having a diameter of 30 mm or more because the distance from the suction device can be limited.

[Embodiment 3] FIG. 4 is a longitudinal sectional view of Embodiment 3 of the present invention, FIG. 5 is a longitudinal sectional view of a main part of FIG. 4, and FIG. 6 is a bottom view of FIG. Note that the same or corresponding parts as those in FIGS. 1 to 3 are denoted by the same reference numerals, and description thereof will be omitted. In the first embodiment, a step portion 10 is provided between the bottom surface of the front lower case 6 and the bottom surface of the rear lower case 9, and the upright surface 11 is provided on the joint portion 5 side of the projecting portion 8 of the front lower case 6. However, in the third embodiment, the joint portion 5 side of the front lower case 6 and the suction port 7 side of the rear lower case 9 are overlapped with each other, and an inclined surface is provided on the lower surface of this portion instead of the upright surface 11. 24 are provided.

The operation of the third embodiment configured as described above will be described. Bottom part 4 of case for suction device for floor of vacuum cleaner
Is moved along the floor surface 14 in the front and rear directions A and B to suck dust on the carpet. That is, the first seal lip 12 attached to the front lower case 6 and the second seal lip 13 attached to the bumper 3 evacuate the vicinity of the suction port 7 to improve the suction performance near the suction port 7, and By rotating the blade 19 of the rotating brush 18 at a high speed,
The fluff of the carpet is squeezed and entangled with the fluff, or the dust lurking behind it.

At this time, since the step portion 10 is provided on the lower surface of the rear lower case 9, the second gap 22 is formed after the first seal lip 12 moves, particularly after moving in the rear b direction. Because of this, the carpet fluff is not crushed more than necessary, the appearance quality is not reduced by the collapse of the carpet fluff, and the contact area between the blade 19 and the carpet fluff is not reduced. In particular, since the inclined surface 24 is provided between the protruding portion 8 and the step portion 10, resistance to operability due to friction between the bristle feet of the carpet and the rear lower case 9 is also reduced. It does not occur, and the operability is extremely good. Thus, the suction port 7 provided in the front lower case 6
, The dust of the carpet is efficiently sucked into the suction portion 17, and the sucked dust is collected toward the main body (not shown) through the joint portion 5.

According to the third embodiment, in addition to the effect shown in the first embodiment, the inclined surface 24 is provided between the projecting portion 8 and the step portion 10, so that the operation by the resistance of the nap of the carpet can be performed. The deterioration of the property can be further reduced.

[0027]

As is apparent from the above description, the floor suction device of the vacuum cleaner according to the present invention comprises a rear lower case and a front lower case having a suction port, and has a gap between the floor and the floor. , A rotating brush provided in the vicinity of the suction port on the bottom face of the case, a first seal lip attached to the suction port and having a tip end contacting the floor, and a second seal lip.
And a joint connected to the suction tool body, with the bottom surface of the rear lower case positioned above the bottom surface of the front lower case, and the bottom surface and floor surface Is formed to be larger than the gap between the bottom surface of the front lower case and the floor surface.

For this reason, the degree of vacuum at the time of cleaning on the floor surface is secured, so that the suction performance can be maintained, and at the time of cleaning of the carpet, the nap of the carpet can be prevented from being crushed.
Without impairing the scraping performance of the rotating brush during cleaning,
Operability can be improved.

Also, the gap between the rear lower case and the floor is
Since it is 5 mm to 15 mm, operability can be improved without mounting a large-diameter wheel.

Further, since an inclined surface is provided between the bottom surface of the rear lower case and the joint portion bottom surface of the front lower case, operability is deteriorated due to the resistance of the rug of the carpet in operating the floor suction device. Can be eliminated.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of Embodiment 1 of the present invention.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a bottom view of FIG. 1;

FIG. 4 is a longitudinal sectional view of a third embodiment of the present invention.

FIG. 5 is an enlarged view of a main part of FIG. 4;

FIG. 6 is a bottom view of FIG.

FIG. 7 is a longitudinal sectional view showing an example of a floor suction tool of a conventional vacuum cleaner.

FIG. 8 is an enlarged view of a main part of FIG. 7;

FIG. 9 is a bottom view of FIG. 7;

[Explanation of symbols]

1 Suction tool body, 4 Case bottom, 5 Joint, 6
Front lower case, 7 suction port, 8 projecting portion, 9 rear lower case, 10 stepped portion, 12 first seal lip, 1
3 second seal lip, 14 floor, 18 rotating brush, 20 first gap, 21 step gap, 22 second gap, 24 slope.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Koji Hasu 1728-1, Koeda, Hanazono-cho, Osato-gun, Saitama Prefecture Inside Mitsubishi Electric Home Appliances Co., Ltd. (72) Kenji Yanagisawa 1728-1, Koeda, Hanazono-cho, Osato-gun, Saitama Mitsubishi Electric Home Equipment Co., Ltd.

Claims (3)

[Claims] 1. A case bottom comprising a rear lower case and a front lower case having a suction port and having a gap between the floor and a floor, a rotating brush provided near the suction port on the case bottom, A suction tool body provided with a first seal lip, a second seal lip, and the like, each of which is attached with the suction port interposed therebetween and has a distal end contacting a floor surface, and a joint portion connected to the suction tool body. Vacuum cleaner provided with a floor suction tool, wherein the bottom surface of the rear lower case is positioned above the bottom surface of the front lower case, and the gap between the bottom surface and the floor surface is reduced by the front lower case. A floor suction device for a vacuum cleaner, wherein the suction device is formed to be larger than a gap between a bottom surface of the vacuum cleaner and the floor surface. 2. The clearance between the rear lower case and the floor is 5 m.
The floor suction device for a vacuum cleaner according to claim 1, wherein the suction device has a length of m to 15 mm. 3. The suction tool for a floor of a vacuum cleaner according to claim 1, wherein an inclined surface is provided between the bottom surface of the rear lower case and the joint-side bottom surface of the front lower case.