JP2010274010A - Rotary brush, suction tool for cleaner, and vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary brush which efficiently receives suction air so as to be rotated by a high torque and also is efficiently rotated with less air resistance, and also to provide a suction tool for a cleaner, and a vacuum cleaner which have excellent cleaning performance. <P>SOLUTION: The rotary brush 20 includes: a rotor 26 rotatably attached to a device (not shown in the figure); and cleaning brush bodies 27 arranged in the outer peripheral parts of the rotor 26 and abutting a surface to be cleaned, so as to remove dust. The rotor 26 includes: an axial body 28; a plurality of wing shape bodies 29 arranged by extension outward from the outer peripheral surface of the axial body 28 and respectively having inner side surfaces 29a and outer side surfaces 29b; and holding portions 30 arranged only at the front ends of the inner side surfaces 29a in the wing shape bodies 29, so as to hold the cleaning brush bodies 27. The inner side surfaces 29a are used as air-flow reception surfaces. The holding portions 30 are arranged at the front ends of the inner side surfaces 29a in the wing shape bodies 29, so as to form bent parts 29c at the holding portions. Thus, when an air flow 42 is received by the inner side surfaces 29a, the air flow 42 does not smoothly flow, so as to obtain force to actively push the wing shape bodies 29. Then, strong rotary force is generated in the rotary brush 20, so that cleaning performance is improved. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a cleaning rotary brush provided on a vacuum cleaner suction tool and the like, a vacuum cleaner suction tool using the rotary brush, and an electric vacuum cleaner.

  As a conventional rotating brush of this type, there is one as shown in FIG. 13 (see, for example, Patent Document 1).

  FIG. 13 is a cross-sectional view of a conventional rotating brush. In FIG. 13, a conventional rotary brush 1 includes a substantially rod-shaped rotary rotor 2 made of a metal material such as aluminum, and a cleaning brush body 3 attached to the outer periphery of the rotary rotor 2. The rotary rotor 2 includes a shaft body 2a, a plurality of blades 2b extending radially from the outer periphery of the shaft body 2a and formed in an arc shape, and a cleaning brush body 3 provided at the tip of each blade 2b. It is comprised from the holding | maintenance part 2c holding a lower end.

  Another example of a conventional rotating brush is shown in FIG. 14 (see, for example, Patent Document 2).

  FIG. 14 is a partial cross-sectional view of a conventional rotating brush. In FIG. 14, the conventional rotating brush 4 is composed of a substantially rod-shaped rotating rotor 5 made of a metal material such as aluminum and a cleaning brush body 6 attached to the outer periphery of the rotating rotor 5. The rotary rotor 5 includes a shaft body 5a and a plurality of blades 5b extending radially and linearly from the outer periphery of the shaft body 5a, and holds the lower end of the cleaning brush body 6 at the tip of each blade 5b. A holding portion 5c is formed.

JP 2005-211403 A Japanese Patent No. 4066183

  However, in any of the conventional rotating brushes 1 and 4 described in Patent Documents 1 and 2, the holding portions 2c and 5c are provided on both the outer surfaces 2d and 5d and the inner surfaces 2e and 5e constituting the blades 2b and 5b. Therefore, bent portions 2f and 5f are formed on both the outer side surfaces 2d and 5d and the inner side surfaces 2e and 5e. Therefore, the rotating brushes 1 and 4 are rotated by an electric motor (not shown) or by applying suction air flowing from an opening at the bottom of a vacuum cleaner suction tool (not shown) to the blades 2b and 5b. Sometimes, the air flow is blocked by the bent portions 2f and 5f on the outer side surfaces 2d and 5d of the blades 2b and 5b, and the air contacting the blades 2b and 5b is smoothly rectified and discharged in the outer circumferential direction. There is a problem that the air resistance increases and the rotational force of the rotating brushes 1 and 4 is impeded, and a stable rotational force cannot be obtained.

  Further, as shown in FIG. 14, since the distance L of the blade 5b is larger than the radial distance r of the shaft body 5a, when the rotating brush 4 is rotated by suction air, the wind receiving surface becomes larger and its rotational force However, since the outer surface 5d and the inner surface 5e of the blade 5b have the same shape and the outer surface 5d also has the holding portion 5c, the air flow is obstructed. For this reason, a brake is applied to the rotational force, and the improvement of the rotational speed of the rotary brush 4 cannot be expected, and there is a problem that the dust removal efficiency of the rotary brush 4 cannot be improved.

  SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and can efficiently receive suction air and rotate at a high torque, has a low air resistance, can be rotated efficiently, and is cleanable. It aims at providing the suction tool for vacuum cleaners and the vacuum cleaner which were excellent.

  In order to solve the above-described conventional problems, a rotating brush according to the present invention includes a rotor that is rotatably attached to a device, a cleaning brush that is disposed on an outer peripheral portion of the rotor and that abuts against a surface to be cleaned and removes dust. In the rotary brush composed of a body, the rotor includes a shaft body, a plurality of wings extending outward from the outer peripheral surface of the shaft body, and each having an inner surface and an outer surface, and the inner surface of the wing member. A holding portion that holds the cleaning brush body provided only on the side surface side tip portion, and has the inner side surface as a wind receiving surface, and attaches the cleaning brush body to the tip portion on the inner side surface of the wing-like body Since the bent portion is formed at the portion by providing the holding portion, when the inner surface of the wing-like body is arranged on the upstream side of the air flow and the air flow is received by the wind receiving surface, the bent portion The flow does not flow smoothly and positively pushes the wings Acts, and a strong rotational force is generated in the rotating brush, and since no holding portion is formed on the outer surface side of the wing-like body, the air resistance during rotation of the rotating brush is reduced. It can be rotated with high torque, and the cleaning performance can be improved.

  Further, the vacuum cleaner suction tool of the present invention is provided with the rotary brush according to claim 1 or 2 in a freely rotatable manner, and the rotary brush can be efficiently rotated with less energy. It is possible to provide a vacuum cleaner suction tool that is compact and lightweight and has excellent operability and cleaning performance.

  Moreover, the vacuum cleaner of this invention is equipped with the suction tool for vacuum cleaners of Claim 3, and is cleaning by using the suction tool for vacuum cleaners which was lightweight, and was excellent in operativity and cleaning performance. A vacuum cleaner with good performance and operability can be provided.

  The rotating brush of the present invention can receive air flow efficiently and rotate at high torque, and can be rotated efficiently because of low air resistance during rotation. Also, the vacuum cleaner suction of the present invention Tools and vacuum cleaners are excellent in cleanability.

FIG. 1 is an overall view of a vacuum cleaner to which a vacuum cleaner suction tool equipped with a rotating brush according to the present invention is connected. (Example 1) FIG. 2 is a cross-sectional view showing an internal configuration of the vacuum cleaner suction tool. (Example 1) FIG. 3 is a plan view of the rotating brush. (Example 1) FIG. 4: is principal part sectional drawing of the suction tool for vacuum cleaners. (Example 1) FIG. 5 is an enlarged sectional view of the rotating brush. (Example 1) FIG. 6 is a perspective view of a cleaning brush body of the rotating brush. (Example 1) FIG. 7 is a perspective view of a bearing body of the rotary brush. (Example 1) FIG. 8 is a partial cross-sectional view showing another example of the rotor. (Example 1) FIG. 9 is a cross-sectional view of the rotor of the rotating brush according to the present invention. (Example 2) FIG. 10A is a cross-sectional view of the rotor of the same rotating brush, and FIG. 10B is a cross-sectional view showing an example of another rotor of the same rotating brush. (Example 2) FIG. 11 is a partially cutaway plan view of the vacuum cleaner suction tool of the present invention. (Example 3) FIG. 12: is a principal part expanded sectional view of the suction tool for vacuum cleaners. (Example 3) FIG. 13 is a cross-sectional view of a conventional rotating brush. (Conventional example) FIG. 14 is a partial cross-sectional view showing another example of a conventional rotating brush. (Conventional example)

  1st invention is a rotary brush which consists of a rotor attached rotatably to equipment, and a cleaning brush body which is arranged on the outer peripheral part of the rotor and abuts against a surface to be cleaned and removes dust. The shaft body, the plurality of wing-like bodies extending outward from the outer peripheral surface of the shaft body, each having an inner side surface and an outer side surface, and the cleaning provided on only the tip of the wing-like body on the inner side surface side A holding portion that holds the brush body, and the inner side surface is a wind-receiving surface, and a bent portion is provided at the tip portion of the inner side surface of the wing-like body by attaching a holding portion to which the cleaning brush body is attached. Therefore, if the inner surface of the wing is placed upstream of the air flow and the air flow is received by the wind receiving surface, the air flow does not flow smoothly due to the bent portion, and the wing is positively Pressing force acts on the rotating brush, resulting in a strong rotating force. At the same time, since the holding portion is not formed on the outer surface side of the wing-like body, the air resistance during rotation of the rotating brush is reduced, so that the rotating brush can be rotated efficiently and with high torque, and the cleaning performance is improved. Can be improved.

  In the second invention, in particular, the outer surface of each of the shafts of the wing-like body of the first invention is curved outward to form an outer surface in a smooth curved shape, and the holding portion includes The wind-insulating wall that extends from the inner side of the wing-like body is integrally formed, and the outer side is curved in the direction of rotation with a smooth curved surface. The air resistance during rotation is further reduced, and the rotating brush can be rotated smoothly while efficiently and saving power. In addition, by extending the wind receiving wall on the inner side, when the outside air is received on the inner side, the wind receiving area is increased and the rotating brush can be rotated with high torque.

  The vacuum cleaner suction tool according to the third aspect of the present invention comprises the rotary brush according to claim 1 or 2 so as to be rotatable, and the rotary brush can be efficiently rotated with less energy. It is possible to provide a vacuum cleaner suction tool that is compact and lightweight and has excellent operability and cleaning performance.

  According to a fourth aspect of the present invention, there is provided a vacuum cleaner comprising the vacuum cleaner suction tool according to claim 3, which is light by using a vacuum cleaner suction tool excellent in operability and cleaning performance. A vacuum cleaner with good performance and operability can be provided.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, this invention is not limited by this Example.

  FIG. 1 is an overall view of a vacuum cleaner to which a vacuum cleaner suction tool mounted with a rotating brush according to a first embodiment of the present invention is connected, and FIG. 2 is a cross-sectional view showing an internal configuration of the vacuum cleaner suction tool. 3 is a plan view of the rotary brush, FIG. 4 is a cross-sectional view of an essential part of the suction tool for the vacuum cleaner, FIG. 5 is an enlarged cross-sectional view of the rotary brush, and FIG. 6 is a cleaning of the rotary brush. FIG. 7 is a perspective view of a bearing body of the rotating brush.

  In FIG. 1, the vacuum cleaner to which the suction tool for the vacuum cleaner mounted with the rotating brush in the present embodiment is connected has an electric blower 10 in the rear and a dust bag 11 for collecting dust in the front. A vacuum cleaner main body 13 having a dust collecting chamber 12, a hose 15 having one end connected to the vacuum cleaner main body 13 so as to communicate with the dust collecting chamber 12, and the other end connected to the extension pipe 14; The vacuum cleaner suction tool 16 is connected to the end opposite to the hose 15 side and sucks dust on the floor. A handle 17 is provided at the end of the hose 15 on the side of the extension pipe 14 in order to operate the vacuum cleaner suction tool 16 on the floor surface.

  2 to 7, the vacuum cleaner suction tool 16 includes a rotary brush storage chamber 21 that rotatably stores the rotary brush 20 in the present embodiment via a pair of bearings 24, a rotatable and extension tube 14. The rotary brush storage chamber 21 and the connection pipe 22 communicate with each other through a suction air passage 23. A dust suction port 25 that opens downward and communicates with the rotary brush storage chamber 21 is formed on the bottom surface 45 of the vacuum cleaner suction tool 16.

  The rotating brush 20 is rotatably attached to a vacuum cleaner suction tool 16 that is one of the devices, and is disposed on the outer peripheral portion of the rotor 26 and is in contact with a floor surface to be cleaned. The cleaning brush body 27 for removing dust, the bearing body A31, and the bearing body B61, the rotor 26 of which is supported by the shaft body 28 having both ends supported by the bearing body A31 and the bearing body B61, and the outer peripheral surface of the shaft body 28 A plurality of wings 29 extending in a straight line from the outside to the outside and having inner side surfaces 29a and outer sides 29b respectively, and a cleaning brush provided only at the tip of the wing-like body 29 on the inner side surface 29a side A holding unit 30 that holds the body 27 is provided. The holding portion 30 includes a convex groove portion 30 a having a substantially convex cross section, and the bottom portion 30 b of the holding portion 30 is formed substantially parallel to the central axis of the shaft body 28.

  In the present embodiment, the three wing-like bodies 29 are arranged at equal intervals in the circumferential direction of the outer peripheral surface of the shaft body 28. The outer surface 29b of each wing-like body 29 has a straight rectifying surface with no irregularities from the root portion toward the tip side, but the holding portion 30 is provided at the tip of the inner surface side 29a on the opposite side. The bent portion 29c is formed in the portion, and when receiving the air flow 42 flowing from the dust suction port 25 provided on the bottom surface 45 of the vacuum cleaner suction tool 16, the wind can be efficiently received. The wind surface is used.

  In the present embodiment, the shaft body 28, the three wings 29, and the holding portions 30 are integrally formed of a light metal material such as aluminum by extrusion molding. Further, the overall height L of the wing-like body 29 is formed longer than the radius r of the shaft body 28.

  Further, the cleaning brush body 27 is substantially band-shaped, and as shown in FIG. 6, a base portion 27a inserted from the side of the convex groove portion 30a of the holding portion 30 and a lower end are fixed to the base portion 27a, and have a large number of small diameters. The brush member 27b is made of resin fiber, hair, or a soft material sheet. In the present embodiment, as described above, since the cross-sectional shape of the convex groove portion 30 is substantially convex, even if the rotary brush 20 rotates at a high speed, the base portion 27a of the cleaning brush body 27 is retained by the holding portion 30. There will be no departure.

  As shown in FIG. 7, the bearing body A31 has a substantially circular shape at the center, a center support portion 31a for holding the end portion of the shaft body 28 therein, and an end portion of the wing-like body 29 inserted and supported. A support groove 31b for stopping, and a blade A31e extending radially outward from the central support portion 31a, having the same shape as the three rows of wings 29, and the tip of the blade A31e, and holding the cleaning brush body 27 It is comprised from the brush body 31c which prevents falling off from the part 30, and shaft body B31d rotatably supported by the bearing 24 currently formed in the suction tool 16 for vacuum cleaners.

  The operations and effects of the rotary brush 20, the vacuum cleaner suction tool 16 and the vacuum cleaner in the present embodiment configured as described above are as follows.

  As shown in FIG. 1, a hose 15, an extension pipe 14, and a vacuum cleaner suction tool 16 are connected in order to the vacuum cleaner main body 13, and an operation unit (not shown) provided on the handle 17 is operated to clean the vacuum cleaner. When the operation of the main body 13 is started, the electric blower 10 is energized, an air flow 42 is generated, and the dust on the floor surface 41 together with the air flow 42 from the dust suction port 25 provided on the bottom surface of the vacuum cleaner suction tool 16. Inflow.

  At this time, as shown in FIG. 4, the air flow 42 flowing in vigorously from the dust suction port 25 hits the inner surface 29 a of the wing 29 of the rotating brush 20, that is, the wind receiving surface, and the rotating brush 20 is counterclockwise (rotated). Rotate in direction 43). As a result, the dust 40 that is stuck on the floor surface 41 is efficiently scraped off by the cleaning brush body 27, and the air flow 42 including the dust 40 extends to the suction air passage 23 in the vacuum cleaner suction tool 16. The tube 14 and the hose 15 are sequentially passed, and flow into the dust bag 11 in the dust chamber 12 of the cleaner body 13, where the dust 40 is collected and clean air passes through the electric blower 10. The air is exhausted from an exhaust port (not shown) provided on the back surface of the cleaner body 13.

  As described above, the rotating brush 20 according to the present embodiment is provided with the holding portion 30 to which the cleaning brush body 27 is attached at the distal end portion of the inner surface 29a of the wing-like body 29, so that a bent portion 29c is formed at that portion. Thereby, when the air flow 42 flowing in from the dust suction port 25 provided on the bottom surface of the vacuum cleaner suction tool 16 hits the inner side surface 29a, the air flow 42 does not flow smoothly by the bent portion 29c, and the wing-like body 29 is moved. A positive pushing force, that is, a force that strongly rotates the rotating brush 20 acts, and the cleaning performance can be greatly improved.

  Further, since the outer surface 29b of the winged body 29 is smooth without any irregularities, air smoothly flows out of the winged body 29, so that the air resistance during rotation is reduced and the rotational force of the rotating brush 20 is reduced. Is hard to be disturbed.

  Furthermore, in this embodiment, since the blade A31e is also formed in the bearing body A31, the wind receiving area of the wing-like body 29 becomes larger, and the rotational force can be increased. Further, when the surface to be cleaned is a carpet having a long bristle, a large resistance is generated between the carpet and the cleaning brush body 27, the rotation is weakened, and the dust removing effect is reduced. Since the radius r of the wing member 29 is set to be small and the overall length L of the winged body 29 is set to be large, the pressure receiving area of the outside air is increased, the rotational torque is increased, the reduction in the rotational speed is prevented, and the dust removal efficiency is continuously reduced. Can be prevented.

  In the present embodiment, each wing-like body 29 is twisted at a predetermined angle and arranged in three rows over the entire width of the rotary brush 20, but the number is not limited to three rows, but two rows, four rows or more. The above may be sufficient, and it may be arranged in a straight line instead of twisting.

  Further, the brush member 27b may be constituted by a raised cloth body (not shown) constituted by a large number of small-diameter yarns, and the convex groove portions 30a constituted by four rows are provided with a brush-like thing and a raised cloth. If the body is inserted alternately, the dust stuck to the floor is wiped with the brush-like brush member 27b, and the extra fine dust attached to the floor is wiped with the brush member 27b made of a brushed cloth body. Each dust may be removed.

  Further, since the bottom portion 30b of the holding portion 30 is formed substantially parallel to the longitudinal center axis of the shaft body 28, a bent portion 29c is formed on the inner side surface 29a which is the wind receiving surface, and the air flow is Since it is obstructed and becomes a reverse flow, the wind receiving surface is pressed with a strong force and the rotational force improves, so even when dusting the surface to be cleaned such as a carpet with long hairs, it rotates against the resistance of the hairs Can be prevented from stopping. Further, since the cleaning brush body 27 attached to the holding portion 30 is also formed substantially perpendicular to the shaft core, the cleaning brush body 27 can always be brought into contact with the surface to be cleaned vertically. To maximize the dust removal effect.

  In addition, the size of the rotating brush 20 is limited to a predetermined size, and the distance L from the base to the tip of the wing 29 extending outward from the outer periphery of the shaft 28 and the shaft The relationship with the radius r of the body 28 is L >> r, the thickness of the shaft body 28 that is not directly related to the air flow is made as small as possible, and the surface area of the airfoil 29 that is directly related to the air flow is increased, If the inner surface 29a that is the wind receiving surface is arranged on the upstream side of the air flow 42, a stronger rotational force can be obtained, the surface to be cleaned has irregularities, and even if the resistance is strong, the rotating brush 20 is reliably continued. The dust removal efficiency can be stabilized.

  In the above embodiment, the cross-sectional shape of the attachment portion of the cleaning brush body 27 of the holding portion 30 is a convex groove shape. However, as shown in FIG. 8, a general concave groove portion 30c may be used. However, in this case, it is necessary to securely fix the base 27a of the cleaning brush body 27 to the concave groove portion 30c by a method such as welding or adhesion so that the cleaning brush body 27 does not come off when the rotary brush 20 rotates. Needless to say.

  (Example 2)

FIG. 9 is a cross-sectional view of the rotor of the rotating brush in the second embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same part as the rotary brush in the said 1st Example, and the description is abbreviate | omitted.
In the first embodiment, each of the inner surface 29a and the outer surface 29b of the winged body 29 is formed in a straight line, whereas the rotor 26a of the rotating brush 20 in the present embodiment is as shown in FIG. Each of the wing-like bodies 29 is curved outward from the outer peripheral surface of the shaft body 28, that is, each of the inner side surface 29a and the outer side surface 29b is curved to the opposite side of the inner side surface 29a, which is the wind receiving surface. The side surface 29b is formed into a smooth curved surface, and the holding portion 30 is integrated with a wind receiving wall 30d (a portion indicated by a range 30e in FIG. 9) extending from the inner surface 29a side of the wing-shaped body 29. The other configuration is the same as that of the first embodiment.

  The operation of the rotating brush 20 of the present embodiment configured as described above is as follows.

  When the air flow 42 flowing in from the dust suction port 25 provided on the lower surface of the vacuum cleaner suction tool 16 hits the inner surface 29a of the rotor 26a of the rotary brush 20, an air flow 44 is generated along the inner surface 29a, and the rotor A rotational force is applied to 26a, and the rotating brush 20 rotates.

  As described above, the rotor 26a of the rotating brush 20 in the present embodiment has a smooth curved outer surface 29b of the wing-like body 29 and is curved on the opposite side of the inner surface 29a that is the wind receiving surface, that is, in the rotational direction side. Since it is curved, the air resistance during rotation of the rotating brush 20 is reduced, and the rotating brush 20 can be rotated efficiently and smoothly. Further, by extending the wind receiving wall 30d on the inner side surface 29a side, when receiving the outside air on the inner side surface 29a side, the wind receiving area is increased and the rotating brush 20 can be rotated with high torque.

  10A is a cross-sectional view of a rotor 26a provided with three wings, and FIG. 10B is a cross-sectional view of a rotor 26b provided with two wings 29. As indicated by the dotted line, the shaft 28, the adjacent wing 29, the holding portion 30 formed at the tip of the wing 29, or the shaft 28, the facing wing 29, and the wing If the holding part 30 formed at the tip of 29 is formed so as to be substantially Z-shaped, it is possible to receive wind more reliably at the Z-shaped cross section when the rotary brush 20 rotates, as a result, The rotating brush 20 can be rotated more powerfully.

  (Example 3)

  FIG. 11 is a partially cutaway plan view of a vacuum cleaner suction tool according to a third embodiment of the present invention, and FIG. 12 is an enlarged cross-sectional view of a main part of the vacuum cleaner suction tool. The same parts as those of the rotating brush in the first and second embodiments are designated by the same reference numerals and the description thereof is omitted.

  In the first and second embodiments, the air flow 42 flowing from the dust suction port 25 is applied to the inner surface 29a of the rotating brush 20 to rotate the rotating brush 20. However, the vacuum cleaner suction in this embodiment is used. As shown in FIGS. 11 and 12, the tool 35 includes a motor 36 for rotating the rotary brush 20 in one direction (rotation direction 47 in this embodiment), a gear A37 attached to the motor 36, and a rotation. A gear B38 provided on the shaft body 28 of the brush 20 and a belt 60 stretched between the gear A37 and the gear B38 are provided, and the rotary brush 20 is rotated by the motor 36 via the belt 60.

  Also in this embodiment, as shown in FIG. 12, the outer surface 29b, which is a rectifying surface having no irregularities of the wing 29, is arranged so as to face the downstream side of the suction airflow.

  As described above, in the present embodiment, the rotating brush 20 is not rotated by the air flow 42 as shown in FIG. 4, but by an external drive source such as the motor 36 as shown in FIGS. While forcedly rotating and disposing the inner side surface 29a of the wing 29 on the upstream side of the airflow, the outside air sucked together with the dust from the dust suction port 25 provided on the bottom surface of the vacuum cleaner suction tool 35 is airflow 46. Then, it is sucked smoothly into the cleaner body 13 side. Further, the air flow 46 presses the inner side surface 29a, so that the rotational force of the motor 36 can be supplemented, which is useful for miniaturization and energy saving of the motor 36.

  Further, since the outer surface 29b having no irregularities on the surface is on the rotation direction 47 side, the air pushed by the outer surface 29b flows smoothly along the outer surface 29b, which is the rectifying surface, and therefore the air resistance is small. Rotational force is unlikely to decrease, the burden on the motor 36 is reduced, and the motor 36 is reduced in size and saved in energy.

  Moreover, since the rotary brush 20 in the said Example is used for the vacuum cleaner suction tool 16, since a rotary brush can be efficiently rotated with little energy, it is small and light, and is operatable and cleaning performance. The vacuum cleaner suction tool can be provided.

  Further, if the vacuum cleaner suction tool 16 is connected to the vacuum cleaner main body 13 via the hose 15 and the extension pipe 14 to perform the cleaning work, the electric cleaning with good cleaning performance and operability is achieved. Machine can be provided.

  As described above, the rotating brush according to the present invention can efficiently receive suction air and rotate with high torque, and can be rotated efficiently because of low air resistance during rotation. The vacuum cleaner suction tool and the vacuum cleaner are excellent in cleanability and can be applied not only to the vacuum cleaner but also to various cleaning devices and cleaning devices using a rotating brush.

DESCRIPTION OF SYMBOLS 10 Electric blower 13 Vacuum cleaner main body 16, 35 Vacuum cleaner suction tool 20 Rotating brush 26, 26a, 26b Rotor 27 Cleaning brush body 28 Shaft body 29 Wing body 30 Holding part 42, 44, 46 Air flow

Claims (4)

In a rotating brush comprising a rotor that is rotatably attached to an apparatus, and a cleaning brush body that is disposed on an outer peripheral portion of the rotor and that contacts a surface to be cleaned and removes dust, the rotor includes a shaft body, the shaft A plurality of wing-like bodies extending outward from the outer peripheral surface of the body and having inner and outer surfaces respectively, and a holding member that is provided only at the tip of the wing-like body on the inner side surface and holds the cleaning brush body And a rotating brush characterized in that the inner side surface is a wind receiving surface. A wind receiving wall that is curved outward from the outer peripheral surface of each shaft body of the wing-like body to form a smooth curved outer surface, and extends from the inner side surface of the wing-like body to the holding portion. The rotary brush according to claim 1, which is integrally formed. A vacuum cleaner suction tool comprising the rotary brush according to claim 1 to be rotatable. The vacuum cleaner provided with the vacuum cleaner suction tool of Claim 3.

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