JP2003052585A - Rotating cleaner, suction opening having that, vacuum cleaner having the suction opening - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate insertion and removal of a bearing into and from rotating cleaner body. SOLUTION: The rotating cleaner 33 is rotatably arranged in a state of fronting on a dust suction opening in a suction opening body having the dust suction opening at the bottom. In the rotating cleaner 33 in which a bearing 40 that can be attached to and detached from the suction opening body is detachably provided at one end of the rotating cleaner body 36 of the rotating cleaner 33, the bearing 40 is partially sunk into a ring-shaped recess 47 formed at one end of the rotating cleaner body 36 of the rotating cleaner 33, and an engagement recess 56 to remove the bearing 40 is provided on the outside periphery of a part projecting out from the ring-shaped recess 47.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary cleaning member for wiping and cleaning a floor surface while rotating, a suction port member having the rotary cleaning member, and an electric vacuum cleaner having the suction port member.

[0002]

2. Description of the Related Art Conventionally, as a suction inlet of an electric vacuum cleaner,
There is one as shown in FIGS.

FIG. 7A is a schematic view of the suction port body 1.
FIG. 8B shows a part of the lower side of the suction port body 1, and FIG. 8 shows a uniaxial end side of the rotary cleaning body. This suction mouth 1
Is an upper case 2a and a lower case 2b, and this case 2
It has a suction port body 2 having a bumper 2c interposed between a and 2b. The lower case 2b is provided with a dust suction port 2d which is open to the bottom plate.

Reference numeral 3 denotes a rotatable cleaning member which is arranged to face the rectangular dust inlet 2d and 5 denotes a bearing which supports one end of the rotating cleaning member 3. The bearing 5 has a small diameter and a short dimension, and is formed of a slippery material.
The rotary cleaning body 3 has a wiping member 7 in which a rotary cleaning body 6 and flexible blades and rows of bristles are alternately arranged in a spiral shape along the longitudinal direction of the rotary cleaning body 6. . A cylindrical portion 9 having an annular recess 8 that opens in the axial direction is integrally provided at one end of the rotary cleaning body body 6. Further, one end of the rotary cleaning body body 6 is provided from the annular recess 8. The shaft portion 10 and the small diameter shaft portion 11 that are integrally formed on the side extend. A flange 12 (see FIG. 8) for preventing the bearing 5 from coming off is formed at the end of the small diameter shaft portion 11.

The bearing 5 is a shaft portion 10 of the rotary cleaning body body 6.
Has a fitting hole 13 with an inner diameter A for fitting and supporting
The non-fitting hole 1 which is not fitted to the fitting hole 13 and the shaft portion 10.
A retaining claw 15 is projectingly provided at the boundary with the guide 6, and the outer edge portion (upper portion in FIG. 8) of the retaining flange 12 is chamfered to form an inclined guide surface. 12a is formed. The retaining claw 1
5 is a small diameter shaft portion 11 when the bearing 5 is mounted on the shaft portion 10.
The flange 5 for retaining the
Is to prevent the shaft 12 from slipping out of the shaft portion 10, and the distance between the shafts is slightly smaller than the outer diameter of the retaining flange 12.

When the inner diameter of the fitting hole 13 on the side where the bearing 5 is fitted to the shaft portion 10 is A, the inner diameter B of the non-fitting hole 16 on the side not fitted to the shaft portion 10 is equal to the inner diameter A. Is formed. The flange 17 formed integrally with the outer periphery of the bearing 5 closes the annular recess 8 of the tubular portion 9 to prevent dust from entering the annular recess 8.

A U-shaped bearing support portion 19 whose upper side is open is integrally provided on the inner wall surface of the one side plate 2d in the left-right direction of the lower case 2b shown in FIG. By fixing the mounting portion 20 of the bearing 5 in the bearing support portion 19 so as not to rotate, the one end portion of the rotary cleaning body 3 is attached to the lower case 2.
It is rotatably supported by b.

Further, a drive member which is rotationally driven by a drive source is provided in a bearing (not shown) arranged on the side plate opposite to the side plate 2d. The other end of the rotary cleaning body 3 is insertably / removably attached to the drive member in the axial direction, and is integrally connected in the rotational direction.

When the floor surface is cleaned by using the electric vacuum cleaner having the rotary cleaning body 3 and the suction port body 1, dust such as lint and hair is entangled with the bearing portion of the rotary cleaning body 3 or dust. A part of it may enter the annular recess 8 through the gap between the tubular portion 9 and the flange 17 and may serve as rotational resistance of the rotary cleaning body 3. In this case, the rotation of the rotary cleaning body 3 may be hindered, so the rotary cleaning body 3 needs to be cleaned appropriately. In cleaning the rotary cleaning body 3, the rotary cleaning body 3 and the suction body 2 are cleaned in a state where the bearing 5 is extracted from the rotary cleaning body 3 after the rotary cleaning body 3 is removed from the suction body 29.

[0010]

However, in the suction port body 1 provided with the rotary cleaning body 3 described above, in order to clean the rotary cleaning body 3 removed from the lower case 2, the bearing 5 is rotated. When it is taken out from the bearing, the mounting portion 20 of the bearing 5 is short and small, and it is slippery, so it is difficult to pick it up with the fingers of the user, and the maintenance of the rotary cleaning body 3 is troublesome.

When the bearing 5 after the cleaning of the rotary cleaning body 3 is mounted on the rotary cleaning body 3, that is, when the bearing 5 is inserted into the annular recess 8 of the cylindrical portion 9, the bearing 5 is inserted in the wrong direction. When the shaft is inserted into the shaft portion 10, since the bearings 5 have the same hole diameters A and B as described above, the retaining claws 15 of the bearing 5 abut against the step portion 10a of the shaft portion 10, and the retaining claws. 1
There was a risk of damaging 5.

Further, when the bearing 5 is inserted into the shaft portion 10, the retaining hook 15 is guided by the inclined guide surface 12a facing the outside of the retaining flange 12, so that the bearing 5 can be easily inserted. You can However, when the bearing 5 is pulled out, both steps of the retaining claw 15 and the retaining flange 12 engage with each other, so that there is a problem that the user's fingers slip from the mounting portion 20 and it is difficult to pull out the bearing 5. there were.

A first object of the present invention is to provide a rotary cleaning body which can easily pick up the bearing from the rotary cleaning body and clean the rotary cleaning body by surely pinching the mounting portion of the bearing. An object of the present invention is to provide a suction port body having the above, and an electric vacuum cleaner including the suction port body.

A second object of the present invention is to prevent damage to the retaining claws in the bearing when the bearing after cleaning is mounted on the rotary cleaning body, even if the direction of the bearing is mistakenly reversed. A rotating cleaning body that can be prevented in advance, and a suction port body having the cleaning body,
Another object of the present invention is to provide an electric vacuum cleaner including the suction port body.

[0015]

In order to achieve the above-mentioned object, the invention according to claim 1 extends along a dust suction port provided on the bottom surface of the suction port body, and both ends are inside the suction port body. A rotary cleaning body main body rotatably disposed on the rotary cleaning body main body, and a wiping member protruding from the rotary cleaning body main body for cleaning the cleaning surface. The rotary cleaning body main body has a shaft portion and a shaft at least at one end thereof. A cylindrical portion concentrically provided around the portion, and an annular recess opening toward the shaft end is formed between the shaft portion and the cylindrical portion, and a bearing inserted in the annular recess is used. In the rotary cleaning body rotatably supported on the suction port body,
The rotary cleaning body is characterized in that an outer peripheral surface of the bearing protruding from the annular recess is provided with a retaining recess for gripping.

The invention described in claim 2 is the same as claim 1
In the above, the locking recess is provided at a position facing the outer peripheral surface of the bearing.

Further, in the invention according to claim 3, the rotary cleaning body main body extends along the dust suction port provided on the bottom surface of the suction port main body and has both ends rotatably disposed in the suction port main body. And a cleaning member protruding from the rotary cleaning body main body for cleaning the cleaning surface. The rotary cleaning body main body has a shaft portion at least at one end and a cylindrical portion concentrically provided around the shaft portion. An annular recess that opens toward the shaft end is formed between the shaft portion and the tubular portion, and is rotatably supported by the suction port body via a bearing inserted in the annular recess. In the rotary cleaning body, the shaft portion has a large-diameter shaft portion located on the cylindrical portion side and a small-diameter shaft portion that is connected to the large-diameter shaft portion. A flange to prevent slipping out is formed with a smaller diameter than the large diameter shaft part, and the bearing is rotatably fitted to the large diameter shaft part. Has a large diameter hole and a small diameter hole that is connected to the large diameter hole and has a smaller diameter than the large diameter hole, and the bearing has a retaining claw that is located between the holes and engages with the retaining flange. Is provided and the inner diameter of the small diameter hole is smaller than the outer diameter of the large diameter shaft portion.

The invention described in claim 4 is the same as claim 1.
The rotary cleaning body according to any one of claims 1 to 3, wherein the shaft portion has a large-diameter shaft portion located on the cylindrical portion side and a small-diameter shaft portion coaxially connected to the large-diameter shaft portion. At the tip of the small diameter shaft portion, a retaining flange having a smaller diameter than the large diameter shaft portion is formed, and the retaining flange is formed by chamfering both side edges of the outer peripheral edge portion. It is characterized by having.

The invention described in claim 5 is the same as claim 1.
It is characterized in that it is a suction port body including the rotary cleaning body according to any one of 4 to 4.

The invention according to claim 6 is the same as claim 5
It is characterized by being an electric vacuum cleaner provided with the suction inlet described.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, an electric vacuum cleaner 21 includes a cleaner body 22 and a dust collecting chamber (not shown) in the cleaner body 22.
A dust collecting bag 23 such as a paper pack filter disposed inside, an electric blower 24 for applying negative suction pressure to the dust collecting chamber,
A dust collecting hose 25 connected to the cleaner body 22 and communicating with the dust collecting bag 23, an extension pipe 26 connected to the dust collecting hose 25, and a suction port body 27 connected to the extension pipe 26. have. The suction port body 27 includes a suction port body 29 and a connecting pipe 30 that connects the suction port body 29 to the extension pipe 26.

FIG. 2 shows a plan view of the suction port body 27. The bottom plate 3l of the suction port main body 29 constituting the suction port body 27 has a dust suction port 32 which is a suction port for dust on the floor surface.
Is opened. A rotary cleaning body 33 is rotatably mounted facing the dust inlet 32 as described later.
A motor 35 as a drive source is provided in the suction port body 29.
Is built in.

An outline of the rotary cleaning body 33 will be described with reference to FIGS. The rotary cleaning body main body 36 of the rotary cleaning body 33 has cylindrical portions 37 and 39 integrally at both ends,
A bearing (cylindrical bearing) 40, which will be described later, is detachably attached to one of the tubular portions 37. This bearing 40
Is attached to the support plate 41 in the suction port main body 29 so as not to rotate and to be detachable in the radial direction.

The bearing 43 on the other cylinder 39 side is integrally provided on a support plate 42 in the suction port body 29, and a driving member (not shown) is rotatably provided inside the bearing 43. Has been. The coupling (not shown) provided on the shaft 44 integral with the drive member is connected to the coupling (not shown) of the output shaft of the motor 35 by a belt 46. The cylindrical body 39 of the rotary cleaning body main body 36 is connected to the drive member so as to be insertable and removable in the axial direction and integrated in the rotational direction.

The rotary cleaning body main body 36 is provided with a wiping member 45 in which flexible blades and rows of bristles are alternately arranged in a spiral shape. The wiping member 45 may be an ordinary brush or the like, and the drive source may be a turbine or an air blowing unit other than the motor 35. When removing the rotary cleaning body 33 from the suction port main body 29, the rotary cleaning body 33 is pulled out in the axial direction while the bearing 40 is moved in the radial direction.

Next, details of one end of the rotary cleaning body 36 and the bearing 40 will be described with reference to FIGS.

At one end of the rotary cleaning body 36, there is a cylindrical portion 37 having an annular recess 47 which is open toward the shaft end.
Are concentrically and integrally provided. Further, the annular recess 4
7, a part of the large diameter shaft portion 49 and a small diameter shaft portion 50 integrally formed on one end side of the rotary cleaning body 36 extend. The large-diameter shaft portion 49 has a smaller diameter than the rotary cleaning body main body 36, and the small-diameter shaft portion 50 has a smaller diameter than the large-diameter shaft portion 49. A flange 51 for preventing the bearing 40 from coming off is formed at the end of the small diameter shaft portion 50. The large-diameter shaft portion 49 and the small-diameter shaft portion 50 constitute shaft portions 49 and 50 that support the bearing 40.

The bearing 40 is fitted into the large diameter shaft portion 49 of the rotary cleaning body 36 and supports the large diameter shaft portion 49 of the large diameter hole 5 having an inner diameter a.
2a and a small hole 52b having an inner diameter b that does not fit into the large diameter shaft portion 49. A pair of retaining claws 53 are provided at opposite positions at the boundaries between the holes 49 and 50. Further, on both edges of the retaining flange 51, chamfered edges are provided with inclined guide surfaces 51a and 51b. When the bearing 40 is mounted on the large-diameter shaft portion 49, the retaining claws 53 pass over the retaining flange 51 of the small-diameter shaft portion 50, so that the bearing 40 is removed from the large-diameter shaft portion 49. The inner diameter of the flange 12 is to be slightly smaller than the outer diameter of the retaining flange 12 for preventing it from coming off.

The large diameter hole 52a on the side where the bearing 40 is fitted to the large diameter shaft portion 49 has an inner diameter of "a", the outer diameter of the large diameter shaft portion 49 has "a '", and is fitted to the large diameter shaft portion 49. Small side small hole 52b
If the inner diameter of the above is “b”, the outer diameter of the flange 51 is “c”, and the inner diameter of the retaining claw 53 is “d”, then the relationship between the above values is a> a ′>b>c> d. ing.

A flange 55 is integrally formed on the outer periphery of the bearing 40, and the flange 55 closes the annular recess 47 of the tubular portion 37 to prevent dust from entering the annular recess 47. .

A portion of the bearing 40 outside the flange 55, that is, as shown in FIG. 5, has a mounting portion 56, which is an outer peripheral portion projecting from the annular recess 47, for holding the bearing used when the bearing 40 is removed. Locking recesses 57 are formed at opposite positions.

The locking recess 57 is attached to the mounting portion 5.
The groove portions may be continuous grooves along the periphery of the mounting portion 56, instead of the opposed and independent positions of six. Further, when the mounting portion 56 has a circular shape, a protrusion may be formed in the axial direction of the outer periphery of the mounting portion 56 to prevent rotation, but the mounting portion 56 itself may be formed into a prismatic shape to form the bearing 40. The detent can be done.

When the bearing 40 is inserted into the large diameter shaft portion 49 as shown by the arrow Y, the retaining claw 53 of the bearing 40 is prevented.
By passing through and engaging with the flange 51 of the small diameter shaft portion 50, the bearing 40 is mounted on the rotary cleaning body main body 36 in a state where it is prevented from coming off as shown in FIG.

The rotary cleaning body 33 constructed as described above is attached to the suction port body 29 by the rotary cleaning body 3
After the cylindrical body 39 (see FIG. 3) on the other end side of 6 is pushed in the axial direction with respect to the driving member in the bearing 43, the bearing 40 mounted on the rotary cleaning body main body 36 is supported by the bearing support of FIG. Part 1
It is carried out by engaging with a bearing support portion (not shown) similar to that shown in FIG.

When the user uses the suction port body 27 for an appropriate period of time, dust such as lint and hair is left in the suction port body 29 and entangles with the bearing portion of the rotary cleaning body body 36, and the rotary cleaning body 33 moves. Since rotation is hindered, the suction port main body 29
It is necessary to perform maintenance on the inner and rotary cleaning bodies 33. The removal of the rotary cleaning body 33 is performed by performing the reverse operation to the above-described operation of mounting the rotary cleaning body 33. Further, the bearing 40 is removed from the rotary cleaning body main body 36 to remove dust in the annular recess 47 of the tubular portion 37. There is a need to.

When the bearing 40 is removed from the rotary cleaning body 33, the mounting portion 56 of the bearing 40 is short, small, and slippery, and is difficult to pick up with the fingernails of the user. In the mounting portion 56 of 40,
Since the locking recess 57 as described above is provided and removed, the bearing 40 can be easily removed from the rotary cleaning body 36, and the workability of maintenance of the rotary cleaning body 33 and the suction port body 27 having the rotary cleaning body 33 can be improved. Can be improved.

Further, when the bearing 40 is pulled out from the rotary cleaning body 36 of the rotary cleaning body 33, the guide surface 51b is formed on the back edge of the retaining flange 51 formed on the small diameter shaft portion 50. Therefore, the bearing 40 can be easily taken out from the rotary cleaning body 36.

Next, when the bearing 40 is inserted into the large-diameter shaft portion 49 of the rotary cleaning body main body 36 after cleaning the rotary cleaning body 3, FIG.
When the insertion direction of the bearing 40 is erroneously attempted to be inserted as shown in FIG.
Since the inner diameter "a" of 2a is smaller, the edge portion 52c of the small diameter hole 52b abuts the edge portion 49a of the large diameter shaft portion 49 to prevent the bearing 40 from fitting into the large diameter shaft portion 49. can do. That is, the retaining claw 53 of the bearing 40
Collide with the edge 49a of the large diameter shaft portion 49, so that the bearing 4
It is possible to prevent damage to the retaining claws 53 due to incorrect insertion of 0.

[0040]

As described above, the rotary cleaning body according to the first aspect of the present invention extends along the dust suction port provided on the bottom surface of the suction port body and both ends rotate in the suction port body. The rotary cleaning body main body includes a rotary cleaning body main body and a wiping member protruding from the rotary cleaning body main body for cleaning the cleaning surface. The rotary cleaning body main body has a shaft portion and a shaft portion at least at one end. And an annular recessed portion that is concentrically provided in the periphery and that opens toward the shaft end is formed between the shaft portion and the cylindrical portion, and the bearing is inserted into the annular recessed portion. In the rotary cleaning body rotatably supported by the suction port main body, since the locking recess for gripping is provided on the outer peripheral surface of the bearing, which protrudes from the annular recess, the rotary cleaning body is rotated during maintenance. The bearing can be easily removed from the cleaning body for maintenance. It is possible to improve the workability.

Further, in the rotary cleaning body of the invention of claim 2, since the locking recess is provided at a position facing the outer peripheral surface of the bearing in the structure of claim 1, the rotary cleaning body can be removed from the rotary cleaning body. It is possible to more reliably perform the pinching operation of the bearing when pulling out the bearing.

Further, in the rotary cleaning body according to the third aspect of the invention, the rotary cleaning body extends along the dust suction port provided on the bottom surface of the suction port body and has both ends rotatably disposed in the suction port body. A body main body and a wiping member protruding from the rotary cleaning body main body for cleaning the cleaning surface. The rotary cleaning body main body has a shaft portion at least at one end and a cylindrical portion concentrically provided around the shaft portion. And an annular recess that opens toward the shaft end is formed between the shaft portion and the tubular portion, and is rotatably supported by the suction port body via a bearing inserted in the annular recess. In the rotary cleaning body described above, the shaft portion has a large diameter shaft portion located on the cylindrical portion side and a small diameter shaft portion continuous with the large diameter shaft portion, and at the tip of the small diameter shaft portion. Is formed with a smaller diameter retaining flange than the large diameter shaft part, and the bearing is rotatable on the large diameter shaft part. A large-diameter hole to be fitted and a small-diameter hole that is continuous with the large-diameter hole and has a smaller diameter than the large-diameter hole, and the bearing is located between the two holes and engages with the retaining flange Since the inner diameter of the small diameter hole is formed to be smaller than the outer diameter of the large diameter shaft portion when the bearing is mounted on the rotary cleaning body after the maintenance of the rotary cleaning body is incorrect, Even if the bearing is inserted in the opposite direction, the retainer pawl of the rotary cleaning body main body may collide with the large-diameter shaft of the rotary cleaning body main body, and the retainer pawl may be damaged. Can be prevented.

A rotary cleaning body according to a fourth aspect of the present invention is the rotary cleaning body according to any one of the first to third aspects, wherein the shaft portion is a large-diameter shaft portion located on the cylindrical portion side and the diameter. It has a large-diameter shaft portion and a small-diameter shaft portion that are connected coaxially with each other, and a retaining flange having a diameter smaller than that of the large-diameter shaft portion is formed at the tip of the small-diameter shaft portion. Since the flange has a chevron-shaped guide surface formed by chamfering both edges of the outer peripheral edge, it is possible to easily insert and remove the bearing from the rotary cleaning body in the rotating cleaning body in any direction. You can

Further, since the suction port body of the invention of claim 5 comprises the rotary cleaning body according to any one of claims 1 to 4, the rotary cleaning body and the suction port body incorporating the rotary cleaning body. Can be easily maintained.

Since the electric vacuum cleaner according to the sixth aspect of the present invention is configured to include the suction port body according to the fifth aspect,
It is possible to realize an electric vacuum cleaner with improved workability during maintenance of the suction port body.

[Brief description of drawings]

FIG. 1 is an external perspective view of an electric vacuum cleaner to which a rotary cleaning body and a suction port body of the present invention are applied.

FIG. 2 is a plan view of a suction port body to which the rotary cleaning body of the present invention is applied.

FIG. 3 is a plan view of a rotary cleaning body according to the present invention.

FIG. 4 is a sectional view showing details of a bearing of the rotary cleaning body according to the present invention.

5 is a cross-sectional view showing a mounted state of the bearing in FIG.

6 is a cross-sectional view of the bearing portion when the bearing insertion direction in FIG. 4 is mistakenly reversed.

FIG. 7 (a) is a side view showing an example of a suction port body,
FIG. 6B is a perspective view showing a part of the lower case of the conventional suction port main body.

FIG. 8 is a vertical cross-sectional side view showing a rotary cleaning body main body and a bearing portion in FIG. 7 (b).

[Explanation of symbols]

21 vacuum cleaner 27 Suction mouth 29 Suction port body 31 bottom plate 32 Dust suction port 33 Rotating cleaning body 36 Rotating cleaning body 37 Tube 37 40 bearing 47 annular recess 49 large diameter shaft 50 small shaft 51 Flange for retaining 51a, 51b Guide surface 52a Large diameter hole for bearing 52b Small diameter shaft of bearing 53 Claw for retaining 56 Bearing mounting part 57 Locking recess a Bearing inner diameter of large hole a'outer diameter of large shaft b Bearing inner diameter of small hole c Outer diameter of retaining flange d Interval of retaining claws

Claims (6)

[Claims] 1. A rotary cleaning body main body, which extends along a dust inlet provided on a bottom surface of the suction inlet main body, and has both ends rotatably disposed in the suction inlet main body, and the rotary cleaning body main body. A cleaning member provided for projecting for surface wiping, wherein the rotary cleaning body main body has a shaft portion at least at one end and a cylindrical portion concentrically provided around the shaft portion, and the shaft portion and the cylindrical portion. And an annular recess opening toward the shaft end, and a rotary cleaning body rotatably supported by the suction port body via a bearing inserted in the annular recess. A rotary cleaning body, characterized in that a locking recess for gripping is provided on an outer peripheral surface protruding from the annular recess. 2. The rotary cleaning body according to claim 1, wherein the locking recess is provided at a position facing the outer peripheral surface of the bearing. 3. A rotary cleaning body main body, which extends along a dust inlet provided on the bottom surface of the suction inlet main body, and whose both ends are rotatably disposed in the suction inlet main body, and the rotary cleaning body main body is cleaned. A cleaning member provided for projecting for surface wiping, wherein the rotary cleaning body main body has a shaft portion at least at one end and a cylindrical portion concentrically provided around the shaft portion, and the shaft portion and the cylindrical portion. In the rotary cleaning body, which is rotatably supported by the suction port main body via a bearing inserted into the annular recess, the annular recess is formed between A large diameter shaft portion located on the cylindrical portion side and a small diameter shaft portion connected to the large diameter shaft portion are provided, and the tip of the small diameter shaft portion has a smaller diameter than the large diameter shaft portion. A flange is formed, and the bearing is provided with a large diameter hole that is rotatably fitted to the large diameter shaft portion and is connected to the large diameter hole. In addition to having a small diameter hole having a smaller diameter than the large diameter hole, the bearing is provided with a retaining claw located between the both holes and engaged with the retaining flange, and the inner diameter of the small diameter hole is A rotary cleaning body, which is formed to be smaller than the outer diameter of the large-diameter shaft portion. 4. The shaft portion has a large-diameter shaft portion located on the side of the cylindrical portion and a small-diameter shaft portion coaxially connected to the large-diameter shaft portion, and a tip portion of the small-diameter shaft portion. Is formed with a retaining flange having a smaller diameter than the large-diameter shaft portion, and the retaining flange has a chevron-shaped guide surface formed by chamfering both side edges of the outer peripheral edge portion. The rotary cleaning body according to any one of Items 1 to 3. 5. A suction port body comprising the rotary cleaning body according to claim 1. 6. An electric vacuum cleaner comprising the suction port body according to claim 5.