JP2000262443A - Floor brush for vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor brush for a vacuum cleaner in which a suction port for dust collection is wide though the vacuum cleaner is compact in size, and the dust collection performance is stable irrespective of an area to be cleaned. SOLUTION: In the floor brush for the vacuum cleaner having a floor brush body 1, a suction port 6 for dust collection provided in a bottom surface of the floor brush body 1, a rotary brush 8 which is provided with rotary blades 12 and arranged in the floor brush body 1 facing the suction port 6, and an air inlet 21 formed on a front portion 3a of the floor brush 1 to suck the air wherein the rotary brush 8 is rotated by the air sucked from the air inlet 21, the air inlet 21 is arranged so as to be positioned upward of tip parts of a carpet when the floor brush body 1 is installed on the carpet of a surface 17 to be cleaned on a lower side of the front portion 3a of the floor brush 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a floor brush for a vacuum cleaner.

[0002]

2. Description of the Related Art FIG.
It is sectional drawing of the suction opening body (floor brush) of the conventional vacuum cleaner shown in No. 29 gazette. The floor brush 31 is formed by attaching a housing 32a having a shell shape and a housing 32b forming a bottom surface below the housing. The housing forms a hollow body, and a suction port 33 is formed on the bottom surface side of the housing 32b on the side opposite to the cleaning surface FL, and the floor brush 3 faces the suction port 33.
A rotary cleaning body 34 is provided in one main body. In addition, on the upper part of the wall surface other than the surface facing the floor surface of the floor brush 31 main body, in this case, on the upper part of the front surface part 32F of the housing, the rotary cleaning body 34 is rotated by applying air to the blade 34a of the rotary cleaning body 34. There is provided an air inlet 35 for causing the air to flow.

[0003] The conventional floor brush 31 constructed as described above.
In this case, the air introduced from the air inlet 35 is applied to the rotary cleaning body 34 to rotate the rotary cleaning body 34 vigorously, and to collect dust while scraping dust and dirt off the floor surface to be cleaned FL. It is supposed to. In the case of a carpet that needs to be further scraped up by the rotary cleaning body 34, when suction is performed from the cleaner body, the suction port 33 is closed with the carpet and the negative pressure in the floor brush 31 increases.
The air from 5 increases so that the rotary cleaning body 34 can be surely rotated, whereby dust on the carpet can be scraped out. Even if the suction port 33 is closed with a carpet, the air inlet 35 is provided at the upper part of the front surface 32F of the housing, so that the air inlet 35 is not closed and air can be reliably taken in. Has become.

Further, there is an improved floor brush 31 which sucks dust from the air inlet 35. FIG. 12 is a front view of the floor brush, and FIG.
14 is a bottom view of FIG. 12, and FIGS. 14 and 15 are side sectional views of FIG. 12, showing a case where the surface to be cleaned is a floor, a tatami mat, and a carpet, respectively. FIG. 16 is a side sectional view of a main part of FIG. In the figure, reference numeral 41 denotes a floor brush of a vacuum cleaner, which covers an upper case 42, a lower case 43, an opening of the lower case 43, and is openable and closable between the upper cover 42, the upper cover 42 and the lower case 43. And a bumper 45 installed on the vehicle. Reference numeral 46 denotes a coupling rotatably attached to a substantially central rear portion of the floor brush 41.

Reference numeral 47 denotes a suction opening formed in the bottom of the lower case 43, and reference numeral 48 denotes a suction space formed in the floor brush 41, in which a rotary brush 49 is housed so as to face the suction opening 47 substantially at the lower center thereof. I have. The rotating brush 49 includes a shaft 50, and turbines 5 provided at both ends of the shaft 50.
1 and a rotating blade 5 attached to the surface of the shaft 50
The shaft portion 50 is rotatably supported by the lower case 43. And this rotating brush 49
When the attachment / detachment is performed, the upper case 42 is removed.

Reference numeral 53 denotes a front wheel provided at the front of the bottom of the lower case 43, reference numeral 54 denotes a wiping roller provided at the rear of the bottom of the lower case 43, reference numeral 55 denotes a flocking portion, and reference FL denotes a surface to be cleaned such as a floor, a tatami mat, a carpet or the like. It is.

Reference numeral 61 denotes an air intake formed through the lower case 43 from the lower end of the front surface 43a to the front of the bottom surface 43b.
As shown in FIG. 16, a guide wall 62 for guiding air to the rotating blade 52 is formed substantially horizontally.

In the floor brush 41 thus configured, air containing dust is sucked from the suction port 47,
At the same time, air for rotating the rotary blade 52 is also sucked from the air inlet 61. When the surface FL to be cleaned is a floor surface (see FIG. 14), the rotation of the rotating brush 49 collects the dust on the surface FL to be cleaned while soaring the dust.
Is a carpet (see FIG. 15), dust is collected while the dust is sowed while the carpet is scraped up by the rotating blade 52.
Here, the air inlet 61 is connected to the front surface 43a of the lower case 43.
By providing the rotating brush 49 at the lower end of the
In addition to the air for rotation, dust on the surface FL to be cleaned is sucked. Although not shown here, some other conventional floor brushes 41 transmit the rotation of the turbine 51 and the rotary brush 49 via a belt, and such a turbine brush becomes larger. However, the floor brush 41 shown here is improved by forming the turbine 51 coaxially with the rotating brush 49, thereby realizing miniaturization.

[0009]

However, according to the technique described in Japanese Patent Application Laid-Open No. H10-234629, when the surface FL to be picked up by the rotary cleaning body 34 takes in dust, such as on a carpet. The dust can be scraped out by rotating the rotary cleaning body 34 reliably. However, in the case of the cleaning surface FL such as a floor or a tatami mat where the dust is sucked by a negative pressure, the air introduction port 35 is provided. The problem is that the air flow is dispersed from the air inlet port 35 and the suction port 33, and conversely the negative pressure is reduced, so that the amount of dust sucked from the suction port 33 is reduced and the dust collection performance is reduced. was there.

FIG. 12 is an improved version of the floor brush 31.
The floor brush 41 illustrated in FIG. 15 to FIG. 15 compensates for a decrease in the dust collecting ability on the floor and the tatami mat by making the air intake 61 also serve as dust suction. However, in order to perform the dust suction as described above, the bottom surface portion 4 of the lower case 43 is set so that the air intake 61 is located near the surface FL to be cleaned during operation.
3b, the bottom surface 43b of the air intake 61
If the interval L1 (see FIG. 13) between the peripheral edge of the suction port 33 and the peripheral edge of the suction port 33 on the side of the air inlet 61 is made small, that portion may be damaged. For this reason, as a preventive measure, the interval is widened to secure the strength of the portion. However, since the size of the floor brush 31 is reduced, the area of the bottom surface 43b of the lower case 43 is not so large, and if the space L1 is formed to be large as described above, the depth of the suction port 33 becomes narrow. There was a problem that large dust could not be absorbed.

When the surface FL to be cleaned is a carpet with long hairs, as shown in FIG. 15, the carpet is sucked from the air inlet 61 or sneaks into the carpet to close the carpet. As a result, there is a problem that the air for rotating the rotating brush 49 is not sufficiently taken in, and the rotation of the rotating brush 49 is weakened or stopped, so that the dust cannot be sufficiently scraped.

As described above, in the conventional floor brush, the cleaning surface FL having good dust collection performance and the cleaning surface FL which is deteriorated are reduced.
There was always.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a vacuum cleaner capable of forming a wide suction port for dust collection even with a small size and having stable dust collection performance regardless of a surface to be cleaned. It is intended to provide a floor brush for use.

[0014]

A floor brush for a vacuum cleaner according to the present invention comprises a floor brush main body, a dust suction port provided on a bottom surface of the floor brush main body, and a rotating blade.
A rotary brush disposed in the floor brush main body facing the suction port, and an air intake formed on the front surface of the floor brush main body for inhaling air, and rotated by air sucked from the air intake. In a floor brush for a vacuum cleaner in which the brush is rotated, the lower part of the front part of the floor brush main body, and when the floor brush main body is set on the carpet on the surface to be cleaned, the hair brush of the carpet is removed. The air intake is arranged so as to be located above the tip.

In the floor brush for a vacuum cleaner according to the present invention, a guide wall for guiding air from the air inlet to the rotating blade is formed inside the floor brush body of the air inlet, and the guide wall is cleaned. It is formed by inclining toward the surface.

Further, in the floor brush for a vacuum cleaner according to the present invention, the opening area of the suction side of the air intake is set to be larger than the opening area of the guide wall inside the floor brush main body.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a side sectional view of a floor brush of a vacuum cleaner according to Embodiment 1 of the present invention, particularly showing a case where a surface to be cleaned is a carpet. 2 is a sectional view of a main part of FIG. 1, FIG. 3 is a perspective view of FIG. 1, FIG. 4 is a front view of FIG. 1, FIG. 5 is a front sectional view of FIG. 1 is a front sectional view of FIG. 1, particularly showing a state in which the rotating brush is attached and detached.

In FIG. 1, reference numeral 1 denotes a floor brush body of a vacuum cleaner, which is formed by connecting an upper case 2, a lower case 3, and a bumper 4 installed between the upper case 2 and the lower case 3. ing. Reference numeral 5 denotes a coupling rotatably attached to a substantially central rear portion of the floor brush main body 1.

Reference numeral 6 denotes a suction port for dust having an opening on the bottom side of the lower case 3, and 7 denotes a suction space formed in the floor brush main body 1, and a rotary brush which faces the suction port 6 substantially at the lower center thereof. 8 are stored. This rotating brush 8
Is a shaft portion 9 and turbines 1 provided at both ends of the shaft portion 9.
0, bearings 11 provided at both ends of the turbine 10,
And a rotating blade 12 attached to the surface of the shaft portion 9. The shaft portion 9 is rotatably supported by a bearing 11. As shown in FIGS. 8 and 9, the rotating brush 8 is provided in a gap between an outer end portion of one of the turbines 10 and an inner wall of the lower case 3.
a into the lower case 3
And is attached to the lower case 3. The attachment and detachment of the rotary brush 8 is performed from the suction port 6 side as shown in FIG.

Reference numeral 14 denotes a front wheel installed at the front of the bottom surface of the lower case 3, reference numeral 15 denotes a wiping roller installed at the rear of the bottom surface of the lower case 3, reference numeral 16 denotes a flocking portion, and reference numeral 17 denotes a surface to be cleaned such as a floor, a tatami mat, a carpet or the like. It is.

Reference numeral 21 denotes an air intake for taking in air for rotating the rotating brush 8, and a front portion 3 a of the lower case 3.
, And the floor brush main body 1 is
7, it is arranged so as to be located above the tip of the bristle feet of the carpet, which is the surface 17 to be cleaned. In addition,
Since the length of the bristle feet of a general carpet is, for example, 5 to 8 mm, here, the arrangement position H (see FIG. 2) is set to 8 mm or more.

A cylindrical guide wall 22 for guiding air to the rotary blade 12 is formed inside the floor brush main body 1 of the air intake 21 so as to be inclined toward the surface 17 to be cleaned. The lower end 3b of the lower case 3 is formed to have a large cross-sectional area, and a part of the lower end 3b forms the lower side of the guide wall 22. The lower end 3b of the lower case 3 is chamfered with a large radius, specifically, 3 mm or more.
The front portion 3a of the lower case 3 including the air intake 21 is strengthened. Further, the depth l (see FIG. 2) of the lower end 3b of the lower case 3 is configured to be shorter than L2 of the conventional floor brush body 1 shown in FIG. Thus, the rotating brush 8 can be attached and detached without the rotating blade 12 being caught.

Next, the operation will be described. The vacuum cleaner is driven by attaching the floor brush body 1 to the surface 17 to be cleaned.
When the air cleaner is moved forward along 7, air containing dust is sucked from a suction port 6 formed on the bottom surface of the lower case 3 by suction from a cleaner body (not shown). At this time, air is also sucked in from the air intake 21 formed in the front surface 3a of the lower case 3. The air flow a sucked from the air intake 21 hits the outer circumference of the rotating brush 8 and vigorously rotates the rotating blade 12 as shown in FIG. The rotating blades 12 that vigorously rotate collect dust while scraping up the dust that has entered the carpet. Further, the air flow b sucked from the air inlet 21 is pushed down in the suction space 7 by the rotation of the rotating brush 8, and hits the surface 17 to be cleaned, causing dust to fly up. Since the air inlet 21 is provided below the front surface 3a of the lower case 3, not only the air for rotating the rotary blade 12 but also the cleaning surface 17 is provided.
Also inhale dust. That is, while sucking dust from the air inlet 21, the rotating brush 8 is rotated by the air sucked together with the dust, and the dust on the surface 17 to be cleaned is further raised. The dust sucked from both the suction port 6 and the air inlet 21 in this manner passes through the inside of the coupling 5 and is collected by the cleaner body through a hose (not shown) or the like.

FIG. 8 is a diagram showing a case where the surface to be cleaned is a floor or a tatami mat. In this case as well, air for rotating the rotating brush 8 is sucked from the air inlet 21 in the same manner, and the air to be cleaned 1
7 is also sucked in, and the dust is collected while the dust on the surface 17 to be cleaned is raised by the rotation of the rotating brush 8.

As described above, according to the first embodiment, the air inlet 21 is located below the front surface 3a of the lower case 3 and the floor brush main body 1 is installed on the surface 17 to be cleaned. At this time, since the air inlet 21 is not blocked by the carpet because the carpet is located above the tip of the bristle feet of the carpet, which is the surface 17 to be cleaned, the air for rotating the rotary brush 8 Can always be stably inhaled. In addition, since the position where the air inlet 21 is arranged is, in other words, a position near the surface 17 to be cleaned at the time of operation, only the air for rotating the rotating brush 8 and raising the dust from the air inlet 21. Also, dust on the surface 17 to be cleaned can be sucked. For this reason, even the surface 17 to be cleaned, such as a floor or a tatami mat, which sucks dust at a negative pressure, can be used for the air inlet 2.
Since dust can also be sucked from 1, dust collection performance can be prevented from lowering, and a stable dust collection ability can always be exhibited even if the surface 17 to be cleaned is a floor, a tatami mat, or a carpet.

Further, since the air inlet 21 is provided not on the bottom surface of the lower case 3 but on the front portion 3a, the suction port 6 can be sufficiently wide even if it is small, and large dust can be sucked. At the same time, since the rotating blade 12 does not catch on the suction port 6 when the rotating brush 8 is attached or detached, the attaching and detaching is easy, and the rotating blade 12 is not broken by being caught.

Since the guide wall 22 is formed so as to be inclined toward the surface 17 to be cleaned, the air flow a from the air inlet 21 hits the outer periphery of the rotary blade 12 and the rotary brush 8
Can be efficiently rotated. Therefore, the rotating force of the rotating brush 8 is improved, and the dust collecting ability can be increased. The rotation of the rotating brush 8 is controlled by the air inlet 21.
There is also an action of pushing down the air from below, whereby the air flow b hits the surface 17 to be cleaned and causes the dust to fly up, so that the air from the air inlet 21 can be used effectively.

The guide wall 22 of the air inlet 21 of the lower case 3 is cylindrical, and the lower end 3b of the air inlet 21 has a large cross-sectional area and a large R. Is provided, sufficient strength is secured, and it is possible to withstand an impact during operation. Also,
With this large R, the floor brush main body 1 can be smoothly operated without being caught by the hair of the carpet at the time of operation, and it can contribute to improvement of usability.

Embodiment 2 FIG. 9 shows the second embodiment of the present invention, and particularly shows a cross section of a main part. In the second embodiment, an opening 22a on the suction side of the air intake 21 is provided.
Is set larger than the area of the opening 22b of the guide wall 22 inside the floor brush main body 1. Here, the width of the air inlet 21 in the horizontal direction is the opening 2.
2a and the opening 22b are the same, and the width T1 in the height direction of the opening 22a on the suction side in the height direction of the opening 22b on the inside of the floor brush main body 1 of the guide wall 22, as shown in FIG. An example is shown in which the opening area is set large by setting the width to be larger than the width T2.

With this configuration, substantially the same operation and effect as those of the first embodiment can be obtained, and the air sucked in from the opening 22a on the suction side of the air intake 21 is accelerated to move from the opening 22b. Since it is ejected, it collides with the rotating blade 12 at high speed, and the rotating speed of the rotating brush 8 is improved. Therefore, the rotating force of the rotating brush 8 is further increased, and the performance of the rotating blade 12 for scraping out dust can be improved.

Embodiment 3 FIG. 10 shows a third embodiment of the present invention, and particularly shows a cross section of a main part. In the third embodiment, the lower end 3 b of the lower case 3 is
It is formed by inclining toward the side. Note that the inclination is of such an extent that the strength of the lower end portion 3b can be secured.

With this configuration, substantially the same operation and effect as those of the first and second embodiments can be obtained, and the cross-sectional area can be reduced to a necessary minimum while securing the strength of the lower end 3b of the lower case 3. Lower case 3
The material under the air intake 21 can be made thinner, and the floor brush main body 1 can be reduced in weight.

[0033]

Since the present invention is configured as described above, it has the following effects.

The floor brush for a vacuum cleaner according to the present invention includes a floor brush main body, a suction port for dust provided on the bottom surface of the floor brush main body, and a rotating blade, and the inside of the floor brush main body faces the suction port. A vacuum cleaner having a rotary brush disposed on the front surface of the floor brush body and an air intake for sucking air, wherein the rotary brush is rotated by air sucked from the air intake. In the floor brush for the lower part of the front portion of the floor brush body, and
When the floor brush body is installed on the carpet on the surface to be cleaned, the air intake is located so that it is located above the tip of the fur of the carpet. For rotating the rotating brush and raising the dust from the air intake Not only air but also dust on the surface to be cleaned can be sucked. Thereby, a stable dust collecting ability can be always exhibited regardless of whether the surface to be cleaned is a floor, a tatami mat, or a carpet. In addition, since the air intake is provided not on the bottom surface of the floor brush main body but on the front surface thereof, a sufficiently large suction opening can be secured even if the brush is small, and large dust can be sucked.

In the floor brush for a vacuum cleaner according to the present invention, a guide wall for guiding air from the air intake to the rotating blade is formed inside the floor brush body of the air intake, and the guide wall is cleaned. Since it is formed to be inclined toward the surface, the air flow from the air intake can be efficiently applied to the rotating blade, thereby increasing the rotating force of the rotating brush,
Dust collection ability can be improved.

Further, in the floor brush for a vacuum cleaner according to the present invention, the opening area of the suction side of the air intake is set to be larger than the opening area of the guide wall inside the floor brush main body. Can be caused to collide with the rotating blade at a high speed, and the rotating force of the rotating brush can be further increased. Thereby, the scraping performance of the rotating blade is improved, and the dust collecting ability can be further improved.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a floor brush of a vacuum cleaner according to Embodiment 1 of the present invention.

FIG. 2 is a sectional view of a main part of FIG.

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

FIG. 4 is a front view of FIG. 1;

FIG. 5 is a front sectional view of FIG. 1;

FIG. 6 is a bottom view of FIG. 1;

FIG. 7 is a front sectional view of FIG. 1, particularly showing a state when a rotating brush is attached and detached.

FIG. 8 is a side cross-sectional view of the floor brush of the vacuum cleaner according to Embodiment 1 of the present invention, particularly illustrating a case where the surface to be cleaned is a floor or a tatami mat.

FIG. 9 is a view showing a second embodiment of the present invention, and is a cross-sectional view of a main part in particular.

FIG. 10 is a view showing a third embodiment of the present invention, and is a cross-sectional view of a main part, in particular.

FIG. 11 shows a suction port (floor brush) of a conventional vacuum cleaner.
FIG.

FIG. 12 is a front view of another conventional floor brush.

FIG. 13 is a bottom view of FIG.

14 is a side sectional view of FIG. 12, showing a case where the surface to be cleaned is a floor or a tatami mat.

15 is a side cross-sectional view of FIG. 12, showing a case where the surface to be cleaned is a carpet.

FIG. 16 is a sectional view of a main part of FIG.

[Explanation of symbols]

1 floor brush body, 6 suction port, 8 rotating brush,
12 rotating blade, 17 surface to be cleaned, 21 air intake, 22 guide wall.

 ──────────────────────────────────────────────────の Continuing from the front page (72) Inventor Takanobu Kamioka 1728-1, Koeda, Oaza, Hanazono-cho, Osato-gun, Saitama Prefecture Inside Mitsubishi Electric Home Equipment Co., Ltd. 1 Mitsubishi Electric Home Equipment Co., Ltd. (72) Inventor Koji Hasu 1728-1 Omaeda, Hanazono-cho, Osato-gun, Saitama Prefecture F term in Mitsubishi Electric Home Equipment Co., Ltd. 3B061 AA41 AA56 AE01

Claims (3)

[Claims] 1. A floor brush body, a dust suction port provided on a bottom surface of the floor brush body, and a rotating blade,
A rotary brush disposed in the floor brush main body facing the suction port, and an air intake formed in a front portion of the floor brush main body for inhaling air; In a floor brush for an electric vacuum cleaner in which a rotating brush is rotated, when the floor brush body is installed on a carpet on a surface to be cleaned at a lower side of a front surface of the floor brush body, A floor brush for a vacuum cleaner, wherein an air intake is arranged so as to be located above a front end of the floor brush. 2. A guide wall for guiding air from the air intake to the rotary blade is formed inside the floor brush body of the air intake, and the guide wall is formed to be inclined toward the surface to be cleaned. The floor brush for a vacuum cleaner according to claim 1, wherein 3. The floor brush for an electric vacuum cleaner according to claim 2, wherein an opening area of the air inlet on the suction side is set larger than an opening area of the guide wall inside the floor brush main body.