JP2011019819A - Suction tool for vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction tool for a vacuum cleaner, in a configuration provided with a rotating brush, capable of self-travelling smoothly by the rotating brush, and capable of winding a floor wiping sheet around the rotating brush smoothly. <P>SOLUTION: In a suction tool for a vacuum cleaner 1, a rotating brush 10 provided inside a housing 2 faces a main suction port 4 of a bottom face 2A of the housing 2, and the dust on the floor X is scratched up to the main suction port 4 by a rotation drive into one direction (rotation direction Y) in cleaning. The rotating brush 10 includes: a core body 11 which becomes the rotation axis; and the first base parts 12A which are provided in a plural number at certain intervals in the rotation direction Y on the outer surface of the core body 11, and in which two kinds of brush bristles 14 and 15 whose bristles are different in hardness are implanted. Since hard brush bristles 15 which strongly grip the floor X and the floor wiping sheet 20 exist at each of the first base parts 12A, the gripping power of the rotation brush 10 is heightened. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner suction tool.

As a vacuum cleaner suction tool, a suction tool including a rotating brush is known (see Patent Document 1).
In the suction tool described in Patent Document 1, the rotating brush includes a rotor that is rotatably provided on the suction tool, and brush hairs that are implanted on the outer periphery of the rotor so as to protrude from the rotor with a predetermined length. When the rotor rotates, the bristles scrape up dust on the surface to be cleaned. The dust that has been scraped up is sucked into the suction tool by the suction force generated by the electric blower provided in the main body of the vacuum cleaner, and sent to the main body of the vacuum cleaner.

Japanese Utility Model Publication No. 4-112341

Recently, rotating brushes not only have a function to scrape dust, but also to clean the floor by kicking the surface to be cleaned and letting the suction tool run on the surface to be cleaned, or by wrapping a floor cleaning sheet around the periphery. It also has a function of wiping the surface to be cleaned (floor surface) with a sheet.
Therefore, it is desired that the suction tool is smoothly self-propelled by the rotating brush and the floor wiping sheet is smoothly wound around the rotating brush. Furthermore, it is preferable to prevent the life of the bristles of the rotating brush from being reduced, and to prevent long dust such as hair from becoming entangled with the bristles.

The present invention has been made under such a background, and in a configuration provided with a rotating brush, the suction for a vacuum cleaner can smoothly run by the rotating brush and can smoothly wrap the floor wiping sheet around the rotating brush. The main purpose is to provide ingredients.
Another object of the present invention is to provide a suction tool for a vacuum cleaner that can suppress a reduction in the life of the bristles of the rotating brush.

  Another object of the present invention is to provide a vacuum cleaner suction tool capable of preventing long dust from being entangled with the bristles of a rotating brush.

  The invention according to claim 1 has a housing having an opening for suction on the bottom surface, and a rotating brush provided in the housing so as to face the opening and driven to rotate in one direction during cleaning, The rotating brush is rotatably supported by the housing, and a plurality of cores serving as a rotating shaft of the rotating brush and a plurality of different hardnesses provided on the outer surface of the core body at intervals in the one direction. Each of the bases, and the hard brush hairs are arranged side by side downstream in the one direction with respect to the soft brush hairs, and the bristle is softer than the soft brush hairs. A vacuum cleaner suction tool characterized by having a short length.

  The invention according to claim 2 is characterized in that the flocking interval of hard brush hairs in the rotation axis direction of the rotating brush is wider than the flocking interval of soft brush hairs in the rotation axis direction. This is a mechanical suction tool.

According to the first aspect of the present invention, in the vacuum cleaner suction tool, the rotating brush provided in the housing faces the opening on the bottom surface of the housing and is driven to rotate in one direction during cleaning. Then, dust on the surface to be cleaned is scraped up to the opening. Thereby, the vacuum cleaner suction tool can efficiently suck dust into the housing.
Here, the rotating brush includes a core body serving as a rotating shaft, and a plurality of types of brush hairs having different hardnesses provided in the outer surface of the core body at intervals in the one direction (the rotating direction of the rotating brush). Including a planted base.

Thereby, since the hard brush hair which grips strongly to a to-be-cleaned surface or a floor-wiping sheet | seat exists in each base part, the grip force of a rotating brush can be raised. Therefore, the suction tool for a vacuum cleaner can be smoothly self-propelled by the rotating brush, and the floor wiping sheet can be smoothly wound around the rotating brush.
And in each base part, since the hard brush hair is arranged along with the downstream in the one direction with respect to the soft brush hair, during rotation of the rotating brush, the hard brush hair is more than the soft brush hair. First contact the surface to be cleaned. Since hard brush bristles are difficult to bend, even if they come into contact with the surface to be cleaned, they hardly fall down to the upstream side in the one direction and come into contact with soft bristles. Moreover, even if the soft brush bristles come into contact with the surface to be cleaned and fall down to the upstream side in the one direction, there are no hard bristles ahead. Therefore, it is possible to suppress wear of the soft brush hair (decrease in the life of the soft brush hair) that may occur when the hard brush hair and the soft brush hair come into contact with each other.

Here, since hard brush bristles are difficult to bend, gaps are likely to be formed between adjacent hard brush bristles, so that long garbage can easily enter these gaps, and thereby long garbage is easily entangled with hard brush bristles.
However, at each base, the hard brush hair is shorter than the soft brush hair, so when the rotating brush rotates, before the hard brush hair contacts the long dust on the surface to be cleaned, the soft brush hair However, since the long garbage is scraped up to the opening, it is possible to prevent the long garbage from being entangled with the hard brush hair.

  According to the invention described in claim 2, the flocking interval of the hard brush hairs in the rotation axis direction of the rotating brush is wider than the flocking interval of the soft brush hairs in the rotation axis direction. Therefore, extra hard brush hairs can be omitted while securing a minimum amount of hard brush hairs required to increase the gripping force of the rotating brush. Thereby, it is possible to suppress the long trash from being entangled with the hard brush hair as much as possible while increasing the grip force of the rotating brush with the hard brush hair.

BRIEF DESCRIPTION OF THE DRAWINGS It is right sectional drawing of the vacuum cleaner suction tool 1 which concerns on one Embodiment of this invention, (a) shows the state which the vacuum cleaner suction tool 1 is self-propelled, (b) A state in which the floor wiping sheet 20 is wound around the rotating brush 10 is shown. (A) is right sectional drawing of the rotating brush 10, (b) is one base 12 (1st base 12A) of the rotating brush 10 of (a) from the downstream in the rotation direction Y of the rotating brush 10. FIG. (C) is a left side view of the first base portion 12A of (b). It is the figure which applied the modification 1 to FIG.2 (b). (A) is the figure which applied the modification 2 to Fig.2 (a), (b) is the figure which applied the modification 2 to FIG.2 (c).

Embodiments of the present invention will be specifically described below with reference to the drawings.
FIG. 1 is a right sectional view of a vacuum cleaner suction tool 1 according to an embodiment of the present invention, wherein (a) shows a state in which the vacuum cleaner suction tool 1 is self-propelled, b) shows a state in which the floor wiping sheet 20 is wound around the rotating brush 10. Below, the front-back, left-right direction of the suction tool 1 is prescribed | regulated on the basis of the attitude | position of the suction tool 1 for vacuum cleaners in FIG. 1 (it is only called "suction tool 1" hereafter). In FIG. 1, the left side is the front side, the right side is the rear side, the near side is the right side, and the far side is the left side. Moreover, the left-right direction is synonymous with the width direction. In addition, the suction tool 1 of FIG. 1 is arrange | positioned on the floor surface X, and is in the state which can clean the floor surface X top.

Referring to FIG. 1, the suction tool 1 includes a housing 2 and a bend pipe 3.
The housing 2 has a hollow box shape that is long in the width direction and flat in the vertical direction. A main suction port 4 (opening) that is long in the width direction is formed on the front side of the bottom surface 2A of the housing 2, and a sub suction port 5 that is long in the width direction is formed on the front surface of the housing 2. The sub suction port 5 is continuous from the front side with respect to the main suction port 4. The main suction port 4 and the sub suction port 5 communicate with the inside of the housing 2.

  A shutter 6 is provided on the front surface of the housing 2. The shutter 6 has a plate shape that is long in the width direction. The shutter 6 is curved so as to bulge in an arc shape toward the front upper side as viewed from the width direction. The front end of the shutter 6 is integrally provided with a convex portion 7 that protrudes to the front upper side. The shutter 6 covers the sub suction port 5 from the front upper side so as to be openable and closable (FIG. 1 shows a state in which the shutter 6 closes the sub suction port 5).

  A connecting cylinder 8 is attached to the center of the rear surface of the housing 2 in the width direction (see the hatched portion formed by a diagonal line extending to the lower right in FIG. 1). The connecting cylinder 8 has a substantially cylindrical shape having a central axis extending in the front-rear direction, is inserted through the rear surface of the housing 2 from the rear, and is supported by the housing 2 so as to be rotatable about the central axis described above. , Part of the housing 2. The inside of the connection cylinder 8 communicates with the housing 2. The rear end surface of the connection tube 8 and one place on the outer peripheral portion are continuously cut out to form a cutout portion 8A.

  The bend pipe 3 is elongated in the front-rear direction in FIG. 1, and its front end 3A is formed in a substantially spherical shape. The front end 3A of the bend pipe 3 is inserted through the notch 8A of the connection cylinder 8 of the housing 2 from the rear, whereby the bend pipe 3 is supported by the connection cylinder 8 (housing 2). Specifically, in the bend pipe 3, the front end 3 </ b> A is connected to the housing 2, and the rear end 3 </ b> B protrudes rearward from the housing 2. In this state, the bend pipe 3 is rotatable with respect to the connecting cylinder 8 with the front end 3A as a fulcrum. In FIG. 1, the bend pipe 3 is rotatable up and down. Since the connecting cylinder 8 is rotatable about a central axis extending in the front-rear direction, the bend pipe 3 is centered in the front-rear direction together with the connecting cylinder 8 while rotating with respect to the connecting cylinder 8. It can be rotated around an axis. The inside of the bend pipe 3 communicates with the inside of the housing 2 through the inside of the connection cylinder 8. The rear end 3B of the bend pipe 3 is connected to an electric vacuum cleaner main body (not shown) via a hose (not shown) or the like.

  When a vacuum cleaner body (not shown) is operated during cleaning, a suction force is generated in the vacuum cleaner body (not shown), and this suction force acts on the bend pipe 3 and the housing 2. . Thereby, air outside the housing 2 is sucked into the housing 2 from the main suction port 4 on the bottom surface 2 </ b> A of the housing 2. Therefore, when the main suction port 4 faces the floor surface X, dust on the floor surface X rides on the air sucked into the housing 2 from the main suction port 4 and is sucked into the housing 2 from the main suction port 4. Then, it reaches the vacuum cleaner main body (not shown) via the bend pipe 3 and the above-described hose (not shown), and is stored in the vacuum cleaner main body (not shown).

  If the shutter 6 opens the sub suction port 5, dust can be sucked into the housing 2 not only from the main suction port 4 but also from the sub suction port 5. For example, the housing 2 is erected so that the sub suction port 5 faces the floor surface X from above instead of the main suction port 4 on the bottom surface 2 </ b> A of the housing 2. Then, in the housing 2, the sub-suction port 5 side becomes the bottom surface and the bend pipe 3 side becomes the top surface, so that the housing 2 becomes thin in the front-rear direction (horizontal direction). The housing 2 can be inserted into the housing. And the dust of the floor surface X in such a narrow location can be sucked into the housing 2 from the sub suction port 5. Here, when the shutter 6 is opened and closed, the convex portion 7 provided on the shutter 6 is operated.

Here, on the bottom surface 2A of the housing 2, a roller 9 is rotatably attached to the rear side of the main suction port 4, and the roller 9 rolls on the floor surface X so that the suction tool 1 is placed on the floor surface X. Can move smoothly.
A rotating brush 10 is provided in the housing 2. The rotating brush 10 includes a core body 11 and a base portion 12.

2A is a right sectional view of the rotary brush 10, and FIG. 2B is a rotational direction Y of the rotary brush 10 with one base 12 (first base 12A) of the rotary brush 10 of FIG. (C) is a left side view of the first base portion 12A of (b).
As shown in FIG. 2A, the core body 11 is a columnar or cylindrical shape whose central axis extends in the width direction. The left end portion of the core body 11 is rotatably supported by the left end portion of the housing 2 (see FIG. 1) via a bearing (not shown), and the right end portion of the core body 11 is supported by the housing 2 via a bearing (not shown). It is rotatably supported by the right end. Thus, the entire rotating brush 10 has a predetermined direction (counterclockwise as viewed from the right side) with the core 11 (strictly, the central axis of the core 11) as the rotation axis, and the thick solid arrow shown in the figure. )). Here, this one direction is referred to as a rotation direction Y. Further, the rotation axis direction of the rotary brush 10 is the width direction.

A plurality of base portions 12 are provided on the outer peripheral surface of the core body 11 at intervals in the circumferential direction of the outer peripheral surface of the core body 11 (same as the rotation direction Y). Each base portion 12 has a strip shape extending in the width direction (see FIG. 2B), and is embedded in the core body 11 while being partially exposed to the outer peripheral surface of the core body 11.
Each base 12 is provided with a wing cloth 13 or a corresponding bristle among different types of bristle 14 to 17 is planted. Depending on whether the wing cloth 13 is attached or what kind of brush bristles 14-17 are planted, the plurality of base parts 12 may be the first base part 12A, the second base part 12B, the third base part 12C or the first base part 12C. A distinction is made between four bases 12D. The first base portion 12A to the fourth base portion 12D are each provided in two, and on the outer peripheral surface of the core body 11, the first base portion 12A → the second base portion 12B → the third base portion 12C → the fourth base portion 12D → the first. In the rotational direction Y, the base portion 12A, the second base portion 12B, the third base portion 12C, and the fourth base portion 12D are arranged at substantially equal intervals.

  Two types of brush hairs 14 and 15 having different hardness are planted on each first base portion 12A. Here, for the convenience of explanation, in order to distinguish the brush hairs 14 from the brush hairs 15, the brush hairs 14 are illustrated as curly hairs and the brush hairs 15 are illustrated as straight hairs. In addition, the above-mentioned “planted” means that the bristles protrude from the outer peripheral surface of the core body 11 to the outer side in the radial direction of the core body 11 at the corresponding base portion 12. It is planted in the part exposed to the surface. Moreover, the bristle length of a bristle is the length from the root planted to the corresponding base 12 to the bristle tip in the bristle (refer to bristle lengths A and B in FIG. 2C).

Comparing the hardness of the bristle 14 with the hardness of the bristle 15, the bristle 14 is relatively soft (easy to bend), and the bristle 15 is relatively hard (because it is strong and difficult to bend). Further, comparing the hair length A of the brush hair 14 and the hair length B of the brush hair 15, the hair length B of the brush hair 15 is shorter than the hair length A of the brush hair 14 and is about half of the hair length A ( (Refer FIG.2 (c)).
In each first base portion 12A, the bristles 14 and the bristles 15 both form a row extending in the width direction (see FIG. 2B). Here, the flocking interval C of the bristles 14 in the width direction is substantially equal to the flocking interval D of the bristles 15 in the width direction (see FIG. 2B).

Then, as shown in FIG. 2A, in each first base portion 12A, the hard brush hairs 15 (rows of brush hairs 15) rotate in the rotational direction Y with respect to the soft brush hairs 14 (rows of brush hairs 14). Are arranged side by side on the downstream side.
Brush hairs 16 are planted on the second base 12B, wing cloths 13 are attached to the third base 12C, and brush hairs 17 are planted on the fourth base 12D.

Both the bristle 16 and the bristle 17 form a row extending in the width direction. Both the bristle 16 and the bristle 17 are approximately the same as the bristle length A of the bristle 14 (see FIG. 2C) and are not as hard as the bristle 15.
The wing cloth 13 is made of a flexible material, such as a raised cloth, and has a strip shape elongated in the width direction. The wing cloth 13 protrudes from the outer peripheral surface of the core body 11 to the outer side in the radial direction of the core body 11, then bends in a direction opposite to the rotational direction Y, and extends to the front of the brush bristles 16.

  As described above, the rotating brush 10 is rotatable in the housing 2 because the core body 11 is rotatably supported in the rotation direction Y by the left end portion and the right end portion of the housing 2 (see FIG. 1). Is provided. Further, in this state, the rotating brush 10 faces the main suction port 4 from above as shown in FIG. 1A, and the main suction port 4 in a state where the suction tool 1 is disposed on the floor surface X. Facing the floor X from above. At this time, the lower portion of the rotating brush 10 is exposed from the main suction port 4 to the floor surface X.

  Here, driving means 18 is provided in the housing 2. Examples of the driving means 18 include an electrically driven motor and a turbine that is driven to rotate by receiving air sucked into the housing 2 from the main suction port 4. During operation (cleaning) of the main body of the vacuum cleaner (not shown), the driving means 18 is driven to generate a driving force, and this driving force is transmitted to the rotating brush 10, so that the rotating brush 10 , And rotationally driven in the rotational direction Y. That is, the drive means 18 forcibly rotates the rotary brush 10 in the rotation direction Y.

When the rotating brush 10 rotates in the rotation direction Y, the wing cloth 13 and the brush hairs 14 to 17 are arranged in the upstream order in the rotation direction Y (the wing cloth 13 → the brush hair 16 → the brush when the wing cloth 13 is the head. The hair 15 → the brush hair 14 → the brush hair 17) in this order) contacts the floor surface X.
The brush bristles 14, 15, 16, and 17 can scrape dust on the floor surface X in the downstream and upward direction (rear upper side) in the rotation direction Y by contacting the floor surface X. There is a main suction port 4 at the tip of the scooping up, and the dust that has been scooped up from the main suction port 4 to the inside of the housing 2 by the suction force generated in the main body of the vacuum cleaner (not shown) as described above. Sucked into. That is, the brush bristles 14, 15, 16 and 17 scrape dust up to the main suction port 4, so that the suction tool 1 can efficiently suck dust into the housing 2.

The wing cloth 13 wipes the floor surface X softly by contacting the floor surface X. In addition, when the wing cloth 13 is separated from the floor surface X during the rotation of the rotating brush 10, the wing cloth 13 tries to extend from the outer peripheral surface of the core body 11 by the centrifugal force due to the rotation of the rotating brush 10. It is possible to prevent long garbage such as hair from being entangled with the rotating brush 10.
Here, regarding the bristles 14 and 15, as described above, the bristles 15 come into contact with the floor surface X before the bristles 14 during the rotation of the rotary brush 10. Because it is harder than the hair 14 and shorter in hair length (see FIG. 2C), when contacting the floor surface X, it does not bend very much to the upstream side in the rotational direction Y (does not fall down) and almost contacts the brush hair 14 do not do. Moreover, even if the brush hair 14 contacts the floor surface X following the brush hair 15, even if the brush hair falls down to the upstream side in the rotation direction Y, the brush hair 15 does not exist at the tip.

  If the soft brush bristles 14 are arranged on the downstream side in the rotational direction Y with respect to the hard brush bristles 15 (see FIG. 4A described later) so as to be opposite to the present embodiment, the brush bristles 14 are arranged. Comes into contact with the floor surface X before the brush bristles 15 and leans (contacts) with the brush bristles 15 on the upstream side in the rotational direction Y. At this time, in the bristle 14, the bristle portion is not in contact with the bristle 15, and this bristle portion is rubbed against the floor surface X while being largely bent. Therefore, as the rotation of the rotating brush 10 continues, the brush hair 14 is worn quickly at the tip portion.

  However, in this embodiment, as described above, the hard brush bristles 15 are arranged side by side on the downstream side in the rotation direction Y with respect to the soft bristles 14 (in addition, the hard brush bristles 15 are replaced with the soft brush bristles 14. By configuring the hair length to be shorter), the brush hair 14 and the brush hair 15 are prevented from contacting each other. Thereby, the above-mentioned abrasion (decrease in the life of the brush hair 14) of the brush hair 14 that can be caused by the brush hair 14 and the brush hair 15 coming into contact with each other can be suppressed.

  Further, since the bristle 15 is hard and difficult to bend, a gap is likely to be formed between the adjacent bristle 15, so that long garbage can easily enter the gap between the neighboring bristle 15. Long trash is easily entangled. Such a problem is dealt with by configuring the bristles 15 so that the bristles are shorter than the bristles 14 (see FIG. 2C). Specifically, since the bristle length B of the bristles 15 is shorter than the bristle length A of the bristles 14 (see FIG. 2 (c)), referring to FIG. 1 (a), when the rotating brush 10 rotates, the brush Before the bristles 15 try to contact the long garbage on the floor surface X, the brush bristles 14 scrape the long garbage up to the main suction port 4, and this long garbage is immediately sucked into the housing 2. End up. Therefore, it is possible to effectively prevent long dust from being entangled with the hard brush hair 15.

  Then, the rotating brush 10 rotating in this way grips the floor surface X when the wing cloth 13 and the brush bristles 14 to 17 are in contact with the floor surface X, and the floor surface X is downstream in the rotational direction Y (rear side). Kick to the side). Thereby, the suction tool 1 whole can be self-propelled to the front side (refer the thick broken line arrow Z shown in figure). In particular, the brush bristles 15 are hard as described above (the hardest of the wing cloth 13 and the bristles 14 to 17), so the rotating brush 10 strongly grips the floor X in the bristles 15. Therefore, by applying the hard brush bristles 15 and increasing the gripping force of the rotary brush 10, the suction tool 1 can be smoothly driven to a desired position by the rotary brush 10, and the operability of the suction tool 1 is improved. Can be achieved.

And in this suction tool 1, as shown in FIG.1 (b), the sheet | seat 20 for floor cleaning can be wound around the rotating brush 10, and the floor surface X can be wiped and cleaned with the sheet 20 for floor cleaning. The floor wiping sheet 20 is a cloth or paper sheet soaked with water, alcohol or the like (collectively referred to as moisture), and may be a dry sheet.
In order to perform wiping and cleaning, first, the floor wiping sheet 20 is laid on the floor surface X, and the rotating rotary brush 10 is placed behind the floor wiping sheet 20 (preferably the rear end of the floor wiping sheet 20). Touch from above. Thereby, in the rotating brush 10, the wing cloth 13 and the brush hairs 14 to 17 are caught (gripped) by the floor wiping sheet 20, so that the floor wiping sheet 20 is rotating from the rear end side. 10 and is wound around the outer periphery of the rotating brush 10 in a plurality of layers.

Here, in the wing cloth 13 and the brush hairs 14 to 17, the hard brush hair 15 particularly strongly grips the floor wiping sheet 20, so the floor wiping sheet 20 is smoothly drawn to the rotating brush 10, and the rotating brush 10 Can be smoothly wound around.
Then, when the rotary brush 10 is continuously rotated in a state where the floor wiping sheet 20 is wound, and the suction tool 1 is pressed against the floor surface X, the floor surface X can be wiped by the floor wiping sheet 20. At this time, since the floor wiping sheet 20 rubs the floor surface X as the rotary brush 10 rotates, the dirt on the floor surface X can be effectively wiped off. Further, when the above-described moisture is contained in the floor wiping sheet 20, stubborn dirt such as oil dirt on the floor surface X can be removed by this moisture, and the floor surface X can be polished.

  Here, depending on a user's usage, the suction tool 1 may be left for a long time in a state where the floor wiping sheet 20 is wound around the rotary brush 10. However, since the hard brush bristles 15 support and support the floor wiping sheet 20 that is formed in an annular shape by being wound around the rotating brush 10, the other brush bristles 14, 16, and 17 are attached to the floor wiping sheet 20. It is possible to prevent the user from being struck by a bent (sleeping) posture along the shape. Here, if the bristle is put on the sleeping posture, the bristle is deformed and the gripping force of the bristle is reduced. Therefore, the floor wiping sheet 20 is wrapped around the rotating brush 10 again. At this time, a problem that it becomes difficult to wind the floor wiping sheet 20 may occur.

  As described above, in each first base portion 12A of the rotating brush 10, the hard brush hair 15 that grips strongly to the floor surface X and the floor wiping sheet 20 is provided so that the hair length is shorter than the soft brush hair 14, The brush bristles 14 are arranged side by side on the downstream side in the rotational direction Y. Thereby, it is possible to suppress wear of the brush hairs 14 while increasing the gripping force of the rotating brush 10, and to prevent the brush hairs 15 from becoming entangled with long dust and the deformation of the brush hairs 14, 16 and 17.

FIG. 3 is a diagram in which the first modification is applied to FIG.
Here, the flocking interval C of the bristles 14 in the width direction described above and the flocking interval D of the bristles 15 in the width direction may not be equal. Specifically, as in Modification 1 shown in FIG. The flocking interval D of the hard brush bristles 15 may be wider than the flocking interval C of the soft bristles 14. In FIG. 3, the flocking interval D is set to about three times the flocking interval C. In this way, it is possible to omit extra brush hairs 15 other than the brush hairs 15 that are the minimum necessary to increase the gripping force of the rotating brush 10. Thereby, it is possible to suppress the long garbage from being entangled with the brush hair 15 as much as possible while increasing the grip force of the rotating brush 10 with the brush hair 15.

4A is a diagram in which the second modification is applied to FIG. 2A, and FIG. 4B is a diagram in which the second modification is applied to FIG. 2C.
Moreover, in the above-described embodiment, in each first base portion 12A, the hard brush hairs 15 (rows of brush hairs 15) are on the downstream side in the rotation direction Y with respect to the soft brush hairs 14 (rows of brush hairs 14). Although they are arranged side by side (see FIG. 2A), they may be arranged in the reverse order as in Modification 2 shown in FIG. 4A.

In the modified example 2, the soft brush hairs 14 (rows of brush hairs 14) are arranged side by side downstream in the rotation direction Y with respect to the hard brush hairs 15 (rows of brush hairs 15).
In this way, during the rotation of the rotating brush 10, the soft brush hair 14 comes into contact with the floor surface X (see FIG. 1) before the hard brush hair 15. Therefore, the long garbage on the floor surface X is scraped up by the brush bristles 14 and immediately sucked into the housing 2, so that it is possible to effectively prevent the long garbage from being entangled with the hard brush bristles 15. Further, since the hard brush hairs 15 support the soft brush hairs 14 from the upstream side in the rotation direction Y, the hard brush hairs 15 are less likely to bend, and accordingly, the floor wiping sheet 20 described above (FIG. 1B). Can be smoothly wound around the rotating brush 10.

However, the fact that the brush bristles 15 support the bristles 14 means that the bristles 14 easily come into contact with the bristles 15, so that the bristles 14 are easily worn.
The present invention is not limited to the embodiment described above, and various modifications can be made within the scope of the claims. For example, although two types of brush hairs 14 and 15 having different hardness are planted on each first base portion 12A (see FIG. 1), two or more types of brush hairs may be planted.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner suction tool 2 Housing 2A Bottom face 4 Main suction port 10 Rotating brush 11 Core body 12A First base 14 (Soft) brush hair 15 (Hard) brush hair A Hair length B Hair length C Planting interval D Planting interval Y Direction of rotation

Claims (2)

A housing having a suction opening on the bottom surface;
A rotating brush provided in the housing so as to face the opening and driven to rotate in one direction during cleaning;
Have
The rotating brush is
A core that is rotatably supported by the housing and serves as a rotating shaft of the rotating brush;
A plurality of base hairs provided with a plurality of intervals in the one direction on the outer surface of the core body and planted with a plurality of types of brush hairs having different hardnesses;
Including
In each said base, a hard brush hair is arranged along with the soft brush hair in the downstream in the one direction, and the hair length is shorter than the soft brush hair, the vacuum cleaner suction tool .   The suction tool for a vacuum cleaner according to claim 1, wherein a flocking interval of hard brush hairs in a rotation axis direction of the rotating brush is wider than a flocking interval of soft brush hairs in the rotation axis direction.

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