JP2001087182A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a convenient and reliable vacuum cleaner capable of cleaning even an area, which cannot be cleaned sufficiently by a conventional vacuum cleaner, by strongly raking up and sucking dust, etc., by the wall and in the corner of a room. SOLUTION: In a vacuum cleaner consisting of a main body having a dust collecting chamber and incorporating a motor fan, etc., a hose and a pipe connected to this main body, a suction tool, etc., having a suction opening and connected to the pipe for sucking to suck dust, etc., the suction tool 11 is provided with disk-like brushes 30a and 30b, which are respectively independently driven, on both sides of the suction opening 14 on the side of the front part of a lower surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner used in ordinary households, and more particularly, to a vacuum cleaner having improved performance of a suction tool.

[0002]

2. Description of the Related Art An example of a conventional vacuum cleaner used in ordinary households is a dust collector disclosed in Japanese Utility Model Laid-Open No. 55-124238. This dust collector (vacuum cleaner) is shown in FIG.
As shown in FIG. 7, a suction port 82 is formed on the lower surface of the suction tool 81, and the drive motor 8 faces the suction port 82.
3 is provided with a rotating brush 84 connected via a belt, on both sides of the rotating brush 84, a flocking 87 is provided on the lower surface of a disk-shaped brush stand 86, and the bristle 87 on the outer edge is axially oriented in a direction in which the bristle 87 contacts the cleaning surface Is provided with a disk-shaped brush 85 inclined. Also, as shown in FIG. 18, the rotating brush 84 and the disc-shaped brush 85 are connected by a bevel gear 88, and the driving motor 8
By actively scraping dust etc. by 3,
Cleaning is made more reliably.

[0003] Further, a suction port (a suction tool) of a vacuum cleaner described in Japanese Patent No. 2520732 is shown in FIG.
9. As shown in FIG. 20, in order to enhance the dust removal performance of the disc-shaped brush 85, the traveling direction of the suction port body 81 with respect to the floor surface is detected, and the rotating directions of the rotating brush 84 and the disc-shaped brush 85 are switched. The invention has been disclosed.

The suction port body 81 detects the traveling direction of the suction port body 81 based on the rotation direction of the detection wheel in contact with the floor, controls the rotation direction of the drive motor 83, and controls the rotation brush 8
The power is transmitted to the disk-shaped brush 85 by a bevel gear 88 provided on the bearing portion of the disk drive 4, and when the suction port body 81 is moving forward, the rotary brush 84 is rotated forward and forward, and the disk-shaped brush 85 is rotated. The dust is scraped into the suction port 81 by rotating the portion located on the front side toward the inside.

When the suction port body 81 is directed backward,
The rotation direction of the driving motor 83 is reversed so that the rotating brush 84
Is rotated backward so that the disc-shaped brush 85 is rotated so that the rear side faces inward, so that dust is scraped into the suction port body 81 and conveyed to the suction port 82 regardless of the forward or backward movement.

Further, in a second example of the present invention,
As shown in FIG. 21, the rotating brush 84 and the disc-shaped brush 8
5, the bevel gear 88 on the disk-shaped brush 85 side is vertically symmetric.
By selectively engaging one of the bevel gears 88a (or 88b) with a solenoid based on the detection of the traveling direction of the suction port body 81, the disc-shaped brush 8
5 is switched.

[0007]

In any of the above-mentioned prior arts, one drive motor 83 is used to rotate the disc-shaped brushes 85 provided on both sides.
For example, when there is a difference in rotation resistance due to the cleaning surface, such as when one disc-shaped brush 85 is on a carpet and the other disc-shaped brush 85 is on a flooring, the driving force is balanced on the side with a larger load. Therefore, there is a problem that the rotational force is reduced even on the side where the load is small, and the predetermined performance cannot be obtained. Further, there is also a problem that practical reliability is poor because invasion of dust and the like into the bevel gear 88 and the like and entanglement of dust with the disc-shaped brush 85 are inevitable.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and the present invention uses a conventional vacuum cleaner for suction by sufficiently scraping and sucking dust or the like at the wall or corner of a room. It is an object of the present invention to provide an easy-to-use and highly reliable vacuum cleaner capable of cleaning an area where cleaning was not possible.

[0009]

(1) A vacuum cleaner according to the present invention includes a main body having a dust collecting chamber and a built-in electric blower, a hose and a pipe connected to the main body, and a suction port. In a vacuum cleaner comprising a suction tool or the like connected to the pipe and sucking dust or the like, the suction tool is provided with disk-shaped brushes independently driven on both sides of the suction port on the lower front side. It is a thing.

[0010] (2) The connector for driving the disc-shaped brush described in (1) above, comprising an electric motor, an intermediate shaft driven by the electric motor, and a disc-shaped brush removably mounted thereon and transmitting power from the intermediate shaft. The motor, the intermediate shaft, and the connecting tool are housed in a gear box.

(3) The upper end of the disk-shaped brush attached to the connecting device of (2) is located below the upper end of the intermediate shaft.

(4) A rotating shaft of a communication pipe constituting the suction tool of (1) and an electric motor for driving a disk-shaped brush;
A power supply board, which is provided between the rotating shaft and the electric motor and supplies electric power to the electric motor, is disposed substantially on the same line.

(5) The disk-shaped brush according to any of the above (1) to (4) is composed of a disk-shaped flocking table having an inverted trapezoidal cross section and a shaft, and is vertically arranged on the outer peripheral inclined surface of the flocking table. A plurality of flocking holes into which the flocking is implanted in a plurality of stages and in a staggered manner are provided.

(6) The disc-shaped brush according to any of (1) to (5) is configured to be detachable from the suction tool.

(7) A rib for preventing intrusion of dust and the like is provided around the flocking table of the disc-shaped brush of the lower frame constituting the suction device of (1). (8) Also, a notch is provided in a part of the rib of the above (7).

(9) A cover for protecting the disc-shaped brush is provided on the bumper interposed between the lower frame and the upper frame constituting the suction device of (1), (7) or (8).

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 16 is a perspective view showing the overall structure of a household vacuum cleaner. In the figure, reference numeral 1 denotes a main body of the electric vacuum cleaner, which has a built-in electric blower, a power control board, a cord reel, and the like. The front side of the main body 1 captures dust, dirt, etc. sucked by the electric blower. And a dust collecting chamber for collecting the dust.

Reference numerals 2 and 3 denote hoses and pipes for connecting the main body 1 and the suction tool 11 by an air passage, and a handle portion 4 which is gripped by a user for operation is provided at a connection portion between them. On the upper surface, the suction force of the main body 1 and the suction tool 11
There is provided an operation unit 5 for switching the functional operation. An electric wire for supplying electric power to the suction tool 11 is provided in the hose 2 and the pipe 3.
The supply of electric power is controlled by the operation unit 5 provided in. Less than,
The suction tool 11 which is a main part of the present invention will be described in detail.

FIG. 1 is a plan view of an embodiment of a suction device of a vacuum cleaner according to the present invention, FIG. 2 is a plan view showing a state where an upper case of FIG. 1 is removed, and FIG. 3 is a bottom view of FIG. FIG. 4 is a bottom view showing a state where the disc-shaped brush of FIG. 3 is removed, and FIG.
Is a side view of FIG. 1, and FIG. 6 is a longitudinal sectional view of FIG.

1 to 6, reference numeral 11 denotes a suction device, 12 denotes a lower case constituting the suction device 11, 13
Is an upper case, and a rib 29 is formed at an outer periphery (corner portion) of an insertion hole 27 of a shaft portion of a disc-shaped brush described later in a corner portion on a lower front portion side of the lower case 12. A notch 29a is provided on the rear side. Reference numeral 14 denotes a suction port provided on the lower case 12 for sucking dust, dirt, and the like (hereinafter, referred to as dust). 13a and 13b are transparent, translucent or opaque window-shaped projections of different colors provided integrally with the upper case 13 in correspondence with the disc-shaped brush. It is something you can see.

Numeral 15 is a shock-absorbing bumper made of a soft material such as rubber, which is disposed between the lower case 12 and the upper case 13. A cover 15a for protecting the disc-shaped brush is hung at the corner. are doing. 16 has an opening 16a in a part thereof, and a bearing 19a provided on the lower case 12 and the upper case 13 in a central portion on the rear side of the suction tool 11;
A communicating pipe having a rotating shaft 17 supported by 19b and rotatable in a vertical direction, and an air passage 18 provided therein communicates with the suction port 14, and a curved pipe rotatable left and right in the rear portion. 20
Is connected.

In the suction device 11 configured as described above, when the electric blower provided on the main body 1 is driven, the suction device 11 passes through the hose 2, the pipe 3, the bent pipe 20, and the communication pipe 16.
Dust and the like can be carried into the dust collection chamber from the suction port 14.

A wiping roller 21 is formed by winding a felt-like cloth around a resin pipe. The wiping roller 21 is rotatably supported behind the suction port 14 of the lower case 12. The wiping roller 21 functions as a wheel for the floor surface at the rear of the suction tool 11 and also has a wiping function, and complements a dust removing function on a plate floor or the like.

Reference numeral 22 denotes a rotary brush in which a plate-like resin plate 24 is embedded in a spiral groove provided on the torsion shaft 23, and is rotatably supported in the suction port 14 by a horizontal shaft. The resin plate 24 cuts into the hair of a carpet or the like to remove dust and the like. 25a and 25b are a pair of wheels provided on the lower surface on the front side of the lower case 12, and 26 is a fixed brush provided between the suction port 14 and the wiping roller 21.

Numerals 30a and 30b (hereinafter may be simply referred to as 30) are disc-shaped brushes provided on both sides of the suction port 14 at the front side of the lower case 2, and are independently provided with electric motors 55a and 55b (hereinafter, referred to as 30). (May be simply referred to as 55). Hereinafter, the disc-shaped brush 30 and its driving device will be described in detail.

FIG. 7 is a sectional view taken along the line A--A in FIG. 1. As shown in FIGS. 8 and 9, the disk-shaped brush 30 has an inverted trapezoidal brush base 31 and a concave groove having an axially cross-shaped cross section. And a shaft portion 33 provided with a locking groove 34 at an upper portion thereof. On the inclined surface formed on the peripheral surface of the brush base 31, a plurality of steps (in the figure, (The case of two stages is shown)
A staggered flocked hole 32 is provided, and a flock 35 made of a nylon material or the like is implanted in the flocked hole 32.

In this case, increasing the density of the flocking can improve the performance of scraping dust and the like, but the load on the electric motor naturally increases. For this reason, a large-sized electric motor must be used, and the weight and size of the suction tool are increased, resulting in poor usability. Therefore, in the present invention, a sufficient scraping performance can be obtained even when a small electric motor is used, by using a thin hair having a hair diameter of the flocking 35 of 0.1 mm or less to have flexibility. .

FIG. 10 is a plan view of a driving device for the disk-shaped brush 30, FIG. 11 is a longitudinal sectional view thereof, and FIG. 12 is an exploded perspective view. In the figure, reference numeral 41 denotes a synthetic resin,
0, a case 42 and a cover 49
It consists of The case 42 is shown in FIGS.
As shown in FIG. 1, a housing portion 43 for an electric motor 55 is provided on one side, and a bridge 44 having a through hole 44a at a central portion is provided at an upper portion thereof. 45 is the bearing 4
The housing part 46 of the gear mechanism having the reference numeral 5a is a housing part for a connection tool having a through hole 46a at the center and a ring-shaped fitting groove 46b provided on the outer periphery thereof. Reference numeral 46c denotes a cylindrical fitting portion projecting from the lower surface of the lower case 12 so as to correspond to the housing portion 46. Reference numerals 47a and 47b denote locking portions provided on both side walls, and reference numeral 48 denotes a lead wire extraction portion of the electric motor 55.

The cover 49 is shown in FIGS. 13 (a) and 13 (b).
As shown in FIG.
a, through holes 51a, 51b are provided facing the bearing portion 45a, and the case 4 is positioned one step lower than the top plate 50.
A through hole 51c is provided to face the storage section 46 of the second connection tool. The locking portions 47 of the case 42 are provided on both side walls.
a, a locking piece 52 having a locking hole 53 for locking to 47b
a, 52b are provided.

Referring again to FIGS. 11 and 12, reference numeral 55 denotes a motor housed in the housing portion 43 of the case 42, the output shaft of which is projected from the through hole 44a of the bridge 44 and the cover 49.
And a pinion 56 is attached between the bridge 44 and the cover 49.

Numeral 57 designates a gear mechanism accommodated in the accommodating portion 45 of the case 42. A large gear 59 is provided at an upper portion, and a small gear 60 is provided at a lower portion.
Has an intermediate shaft 58 provided integrally therewith.
Is inserted into a bearing portion 45a provided in the case 42,
The upper part is inserted into the through hole 51b provided in the cover 49,
It is rotatably supported.

Reference numeral 61 denotes a connector for the disc-shaped brush 30 housed in the housing portion 46 of the case 42, as shown in FIG.
A cylindrical fitting portion 62 fitted into the fitting groove 46b provided in the case 42, a gear 64 provided on the upper portion thereof, and a gear 64 on the outer periphery. A cylindrical portion 63 provided with a cross-shaped convex portion 65 corresponding to the groove
And a pair of locking pieces 66 provided on the upper portion of the cylindrical portion 63 and having locking claws 67 for locking in the locking grooves 34 provided in the shaft portion 33 of the disc-shaped brush 30. And, between the pinion 56 and the large gear 59, the small gear 60 and the connector 61
Between the timing belt 6 and the gear 64
8 and 69 are applied, and the rotation of the
To communicate.

In FIG. 2, reference numerals 71a and 71b denote electric motors 5;
A power supply board for supplying power to the motors 5a and 55b, respectively, mounted between the motors 55a and 55b and the rotating shaft 17 of the communication pipe 16. In addition, the rotating shaft 17 and the substrate 71
a, 71b and the electric motors 55a, 55b
-O.

The driving voltage of the electric motor 55 for driving the disk-shaped brush 30 is a low voltage of about 6 to 24 V.
A small and lightweight motor 55 can be used, and the usability is not impaired without increasing the weight of the suction tool 11. Also, as described above, the electric motor 55
Since the driving voltage of the power supply is 6 to 24 V, the power supply substrate 71
a and 71b are supplied from the main body 1 to the bent pipe 20 and the connecting pipe 16 via the hose 2 and the pipe 3 10
It is composed of a hybrid IC or a switching regulator for stepping down a 0V power supply to a required voltage (6 to 24V).

In this case, the respective motors 55a, 55
The power supply to b is performed in parallel, and the configuration is such that the influence of the other load fluctuation is minimized. The power supply substrates 71a and 71b according to the present invention have a function of controlling the maximum current. When a large load that stops the rotation of the disk-shaped brushes 30a and 30b is generated,
The supply voltage can be reduced to protect the electric motors 55a and 55b.

In the drive mechanism 40 for the disk-shaped brush 30 as described above, the storage portions 43, 45, 46 of the case 42 are provided.
The motor 55, the gear mechanism 57, and the connecting tool 61 are respectively housed therein, and a lead wire of the motor 55 is taken out from a take-out part 48 provided in the case 42. Then, the output shaft of the electric motor 55 and the intermediate shaft 58 of the gear mechanism 57 are inserted into the through holes 51a and 51b, respectively, with the cover 49 covered, and the locking pieces 52a and 51b are inserted.
The cover 49 is integrally connected to the case 42 by locking the locking holes 53 of the 52b with the locking portions 47a and 47b. At this time, the locking claw 67 of the locking piece 66 of the connecting tool 61 is positioned in contact with the lower surface of the cover 49.

The above-described gear box 41 is configured to close the holes other than the minimum necessary so as to prevent dust and the like from entering the inside. In particular, the gear box 41 has a structure for preventing dust and the like from entering from the suction port 14 side. Has become. Since the suction port 14 has a lower pressure than the vicinity of the lower open hole of the electric motor 55 due to the suction of the main body 1, the air flowing into the suction tool 11 flows through the lower open hole of the electric motor 55 through the electric motor 55. 55, and flows to the suction port 14 side.
Can be cooled.

As shown in FIGS. 2 and 15, the gear box 41 constituting the drive mechanism 40 is housed in the housings 28 provided at both ends of the lower case 12.
The bearing part 45a provided in the fitting part 27c is fitted in the fitting hole 27a.
Is inserted into the insertion hole 27, and the lead wires of the electric motors 55a and 55b are connected to the substrates 71a and 71b, respectively.
When 3 is closed, the drive mechanism 40 is installed in the suction tool 11.

Next, the disk-shaped brush 3
0, as shown in FIG.
Insertion hole 27 provided in lower case 12 (however, cylindrical fitting portion 46 provided on the lower surface of case 42 of gear box 41).
c is inserted), the shaft portion 33 of the disc-shaped brush 30
Is inserted with the cross-shaped groove aligned with the cross-shaped protrusion of the connection tool 61. Then, when inserted to some extent, the locking claws 67 provided on the connecting tool 61 are locked in the locking grooves 34 of the shaft 33, and the distal end of the shaft 33 is inserted into the through hole 51 of the cover 49.
c, the disc-shaped brush 30 is
The vertical movement is regulated between the and the through-hole 51c, and the positioning is performed. The connecting member 61 is driven to be rotatably held.

Further, the disc-shaped brush 30 is moved to the suction device 11.
When the locking claw 67 is disengaged from the locking groove 34 by inserting a screwdriver or the like into the notch 29a of the rib 29 provided on the lower case 12 and turning it, the pull-out can be easily pulled out. . Thereby, the disk-shaped brush 30
Even when dust is entangled, the dust can be easily removed, and maintenance such as replacement when the flocking 35 is worn can be easily performed by the user.

It is to be noted that several types of disk-shaped brushes 30 having different types of flocks implanted with different materials, hardness, lengths, etc., or several types of disk-shaped brushes 30 having different types of flocks 35 implanted in the upper and lower stages of the flocked holes 32 are used. If it is prepared in advance and replaced appropriately according to the place to be cleaned, cleaning can be performed more neatly.

Next, the operation of the present invention configured as described above will be described. First, the cord is pulled out from the cord reel, connected to an outlet, and the power is turned on by operating the operation unit 5 provided on the handle unit 4. As a result, the electric blower is driven to suck air from the suction port 14 of the suction tool 11, and the rotating brush 22 is rotated by the suction force, so that dust and the like are scraped off from the cleaning surface and sucked from the suction port 14. At the same time, power supply substrates 71a, 71b are also provided to the electric motors 55a, 55b.
From the left and right disk-shaped brushes 30a, 3
0b are independently rotated, and dust and the like around (for example, near a wall of a room) are mechanically scraped up.

The dust and the like sucked from the suction port 14 and the dust and the like scooped up by the disc-shaped brushes 30a and 30b pass through the ventilation path 18 of the communication pipe 16, the bent pipe 20, the pipe 3, the handle 4, and the hose 2. After that, it is sent into the main body 1 and accumulated in the dust collection chamber.

In the vacuum cleaner according to the present invention, the disc-shaped brushes 30a and 30b provided on the suction tool 11 are independently driven, so that the load on the left and right disc-shaped brushes 30a and 30b is reduced during cleaning. Even if there is a difference, the rotational force can be maintained independently, so that its performance can be ensured.

The suction tool 11 is provided on both sides of the rotating shaft 17 of the communication pipe 16 symmetrically with respect to the power supply board 71.
Since the drive mechanisms for the disc-shaped brushes 30a and 30b including the motors a and 71b and the electric motors 55a and 55b are provided, and these are arranged substantially on the same line, the suction tool 11 which has a good left-right weight balance and is easy to use is obtained. be able to.

Further, the insertion hole 27 into which the shaft 33 of the disc-shaped brush 30 is inserted is provided in the lower case 12 so that lint and hair are not easily entangled with the shaft 33 of the disc-shaped brush 30 during normal use. Around the disk brush 3
Since the maze is formed by providing the ribs 29 so as to surround the 0 brush stand 31, it is possible to prevent the above-mentioned lint and the like from entering.

Further, depending on the installation state of the suction tool 11 during storage, if the flocking 35 is left in a deformed state for a long time, the flocking 20 becomes hazy and the original performance cannot be exhibited.
In order to avoid such a situation, the present invention provides a bumper 15 provided on the suction device 11 as an impact-reducing material.
Of the disc-shaped brush 3 integrated with the bumper 15
Since the cover 15a hanging down like an umbrella is provided so as to cover the flocked portion of No. 0, deformation of the flocking can be prevented. Since the bumper 15 is made of a soft material, the bumper 15 is easily deformed when the suction tool 11 is pressed against a wall or the like to press the disc-shaped brush against the cleaning surface. It does not hinder the function of scraping dust and the like.

Further, the disk-shaped brush 30 is
When mounted on the intermediate shaft 58, the upper end of the shaft 33
7, the disc-shaped brush 30 can be protected even if the front side of the suction tool 11 hits furniture 90 as shown in FIG. 7 during cleaning. .

[0049]

(1) The present invention provides a main body having a dust collecting chamber and a built-in electric blower, a hose and a pipe connected to the main body, and a dust having a suction port and connected to the pipe. In a vacuum cleaner including a suction tool for suctioning, the suction tool is provided with disc-shaped brushes that are independently driven on both sides of the suction port on the lower front side, so that the left and right disc-shaped brushes are used for cleaning. Even if there is a difference in the load, since the rotational force can be maintained independently of each other, the performance can be ensured.

(2) The driving device for the disk-shaped brush is
An electric motor, an intermediate shaft driven by the electric motor, and a disc-shaped brush are detachably mounted, and have a connector for transmitting power from the intermediate shaft. The electric motor, the intermediate shaft, and the connector are housed in a gear box. With this configuration, a compact drive device with excellent workability can be obtained.

(3) Since the upper end of the disc-shaped brush attached to the connecting device of (2) above is located below the upper end of the intermediate shaft, the front side of the suction device is used for cleaning when cleaning. Even if it hits, etc., a disk-shaped brush can be protected.

(4) A rotating shaft of a communication pipe constituting the suction tool of (1) and an electric motor for driving a disk-shaped brush;
Since the power supply board, which is provided between the rotating shaft and the electric motor and supplies electric power to the electric motor, is disposed substantially on the same line, a suction tool with good balance and easy to use can be obtained.

(5) The disk-shaped brush according to any one of the above (1) to (4) is composed of a disk-shaped flocking table having an inverted trapezoidal cross section and a shaft, and a plurality of brushes arranged vertically on the outer peripheral inclined surface of the flocking table. A plurality of flocked holes into which the hairs are implanted in steps and in a staggered manner are provided, so that the hairs can be densely implanted, and if necessary, for example, hardness, material, length, etc. in the upper and lower flocked holes Different hairs can be planted.

(6) Since the disk-shaped brush of any of the above (1) to (5) is configured to be detachable from the suction tool, maintenance and replacement of the disk-shaped brush can be easily performed.

(7) A rib for preventing intrusion of dust and the like is provided at the front corner of the lower frame constituting the suction tool of (1), and a cutout is provided at a part of the rib. Therefore, it is possible to prevent lint and the like from entangled with the shaft portion of the disk-shaped brush. Also, by inserting a flathead screwdriver or the like from the notch, the disk-shaped brush can be easily removed.

(8) The bumper interposed between the lower frame and the upper frame constituting the suction device of (1) or (7) is provided with a cover for protecting the disc-shaped brush, so that it can be used for storage, etc. Can prevent the bristles of the disk-shaped brush from deforming.

[Brief description of the drawings]

FIG. 1 is a plan view of an embodiment of a suction tool of a vacuum cleaner according to the present invention.

FIG. 2 is a plan view showing a state where an upper case of FIG. 1 is removed.

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

FIG. 4 is a bottom view showing a state where the disk-shaped brush of FIG. 3 is removed.

FIG. 5 is a side view of FIG. 1;

FIG. 6 is a longitudinal sectional view of FIG.

FIG. 7 is a sectional view taken along the line AA of FIG. 1;

FIG. 8 is a front view of the disc-shaped brush of FIG. 7;

FIG. 9 is an enlarged bottom view of FIG. 8;

FIG. 10 is a plan view of the drive mechanism of FIG.

11 is a longitudinal sectional view of FIG.

FIG. 12 is an exploded perspective view of FIG.

FIG. 13 is a plan view of a cover of the gear box of FIG. 10;
It is the front view and the top view and side view of a case.

FIG. 14 is a front view and a plan view of the connection tool of FIG. 10;

FIG. 15 is a longitudinal sectional view showing a state where the disk-shaped brush of FIG. 7 is removed.

FIG. 16 is a perspective view showing the entire configuration of the vacuum cleaner.

FIG. 17 is a bottom view of an example of a conventional suction tool.

18 is a longitudinal sectional view of another example of FIG.

FIG. 19 is a bottom view of another example of the conventional suction tool.

20 is an enlarged sectional view of a main part of FIG.

FIG. 21 is an enlarged sectional view of a main part of another example of FIG. 19;

[Explanation of symbols]

11 suction device, 12 lower case, 13 upper case,
14 suction port, 15 bumper, 15a cover, 16
Communication pipe, 17 rotating shaft, 22 rotating brush, 27 insertion hole, 29 rib, 29a notch, 30a, 30b
Disc-shaped brush, 31 flocking table, 32 flocking hole, 33 shaft, 34 locking groove, 35 flocking, 40 drive mechanism, 41
Gear box, 42 case, 49 cover, 55a,
55b motor, 58 intermediate shaft, 61 connector, 71
a, 71b Power supply substrate.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kazushi Motoki 1728 Koeda, Oaza, Hanazono-cho, Osato-gun, Saitama F-term in Mitsubishi Electric Home Equipment Co., Ltd. (Reference) 3B061 AA44 AD02 AD06

Claims (9)

[Claims] 1. A main body having a dust collecting chamber and a built-in electric blower, a hose and a pipe connected to the main body, a suction device having a suction port and connected to the pipe to suction dust and the like. The vacuum cleaner according to claim 1, wherein the suction tool is provided with disk-shaped brushes that are independently driven on both sides of the suction port on the lower front side. 2. An electric motor, an intermediate shaft driven by the electric motor, and a disc-shaped brush are detachably mounted and have a connector for transmitting power from the intermediate shaft. The motor, the intermediate shaft, and the connector are geared. 2. A vacuum cleaner according to claim 1, wherein said disk-shaped brush driving device is accommodated in a box. 3. The vacuum cleaner according to claim 2, wherein the upper end of the disc-shaped brush attached to the connecting tool is located below the upper end of the intermediate shaft. 4. An electric motor for driving a rotating shaft of a communicating pipe constituting a suction tool, a disk-shaped brush, and a power supply installed between the rotating shaft and the electric motor to supply electric power to the electric motor. 2. The vacuum cleaner according to claim 1, wherein the substrate and the substrate are arranged substantially on the same line. 5. A plurality of disk-shaped brushes comprising a disk-shaped flocking table having an inverted trapezoidal cross section and a shaft, and a plurality of vertically and staggered flocking implanted on an outer peripheral inclined surface of the flocking table. The vacuum cleaner according to any one of claims 1 to 4, wherein the flocked hole is provided. 6. The vacuum cleaner according to claim 1, wherein the disc-shaped brush is configured to be detachable from the suction tool. 7. The vacuum cleaner according to claim 1, wherein a rib for preventing intrusion of dust or the like is provided in a front corner of the lower frame constituting the suction tool. 8. The vacuum cleaner according to claim 7, wherein a notch is provided in a part of the rib. 9. The electric device according to claim 1, wherein a cover for protecting the disc-shaped brush is provided on a bumper interposed between the lower frame and the upper frame constituting the suction device. Vacuum cleaner.