JP7351872B2 - Suction body and vacuum cleaner equipped with it - Google Patents

Description

The present invention relates to a suction body and a vacuum cleaner equipped with the same.

2. Description of the Related Art Conventionally, a vacuum cleaner has a suction body for sucking in dust, and a rotating brush for sucking in dust is mounted thereon.
Patent Documents 1 to 3 describe the bristles of rotating brushes.

Patent No. 5100562 (Figure 1 etc.) Patent No. 5332973 (Figure 5, Figure 6, etc.) Patent No. 4485663 (Figure 4, Figure 5, etc.)

However, when the rotating brush has straight bristles, there is a problem that the hair gets tangled with the rotating brush during cleaning with an electric vacuum cleaner.
The bristles of the rotating brushes described in Patent Documents 1 to 3 are formed in a linear shape when viewed from a direction perpendicular to the rotation axis of the rotating brush.
The rotating brushes described in Patent Documents 1 to 3 have a problem in that hair gets tangled with the rotating brush during cleaning, similar to when the rotating brush has straight bristles.

The present invention was devised in view of the above-mentioned circumstances, and aims to provide a suction body that prevents fibers such as hair from getting entangled in a rotating brush, and a vacuum cleaner equipped with the same.

In order to solve the above-mentioned problems, a suction body according to a first aspect of the present invention includes a rotating brush that is attached to a vacuum cleaner to suck in dust on the floor and that rotates to scrape up the dust; The brush body has a long brush body on which brush bristles are formed, and the brush body has a plurality of loop-shaped bristles formed therein, and each of the plurality of loop-shaped bristles is rotated by the rotating brush. The two roots of each loop-shaped hair overlap in the direction perpendicular to the rotation axis of the loop-shaped hair, and the two roots of each loop -shaped hair are adjacent to each other, and the two roots of each adjacent loop-shaped hair overlap. are arranged in a straight line along the longitudinal direction of the brush body , and the maximum distance between the bristles formed by the loop of the bristles is greater than the distance between the two roots, and the maximum distance between the tip of the bristles and the bristles is greater than the distance between the two roots. It is characterized in that the hairs overlap with adjacent loop-shaped hairs.
The vacuum cleaner of the second invention includes the suction body of the first invention.

According to the present invention, it is possible to provide a suction body that prevents fibers such as hair from getting entangled in a rotating brush, and a vacuum cleaner equipped with the suction body.

FIG. 1 is a perspective view showing a state in which a vacuum cleaner according to an embodiment of the present invention is housed in a support stand. FIG. 1 is a perspective view of the vacuum cleaner in a handy state according to the embodiment. An exploded view of a vacuum cleaner according to an embodiment. The side view which looked at the vacuum cleaner shown in FIG. 2 from the left side. FIG. 1 is a top view of a vacuum cleaner according to an embodiment. A top view of the standard mouthpiece. Bottom view of the standard mouthpiece. A side view of a standard mouthpiece. FIG. 3 is a top view of the standard mouthpiece according to the embodiment with the upper case removed. FIG. 3 is a perspective view of a rotating cleaning body. FIG. 11 is a view of the rotating cleaning body shown in FIG. 10 in the I direction. The II direction arrow view of the rotary cleaning body of FIG. 11A. FIG. 11B is a view taken in the direction of arrow III of the rotary cleaning body in FIG. 11A. FIG. 11A is a sectional view taken along line IV-IV of the rotary cleaning body in FIG. 11A. FIG. 2 is an exploded perspective view of a standard mouthpiece body including a rotary core, a clutch body, and a brush cover in which a first brush and a second brush are fitted in a spiral shape. FIG. 12B is a V-direction arrow view of the rotary core in FIG. 12A. FIG. 13A is a view of the rotary core in the VI direction of FIG. 13A. FIG. 12A is a front view of the rotary core of FIG. 12A. An enlarged view of section VII in FIG. 13A. FIG. 13B is an enlarged view of section VII in FIG. 13A of another example. FIG. 3 is a diagram of the first brush before being attached to the rotary core, viewed visually in the direction perpendicular to the extending direction. The figure which shows the VIII direction arrow view of FIG. 14A. The IX direction arrow view of FIG. 14A. FIG. 14C is a view taken in the direction of arrow IX in FIG. 14A of another example different from FIG. 14C. The figure which shows an example of the manufacturing process of a 1st brush. The figure which shows an example of the manufacturing process of a 1st brush. The figure which shows an example of the manufacturing process of a 1st brush. The figure which shows the other example of the manufacturing process of a 1st brush. The figure which shows the 1st brush of the rotary cleaning body, the 2nd brush, and the cleaned hair which are being cleaned with a vacuum cleaner. The figure which shows the brush of the rotary cleaning body during cleaning with the vacuum cleaner of a comparative example, and the cleaned hair. FIG. 3 is a perspective view of a rotary cleaning body according to a second embodiment. FIG. 7 is a diagram showing straight bristles of a second brush of Embodiment 2. FIG. 7 is a perspective view of a rotary cleaning body of Embodiment 3. FIG. 7 is a diagram showing straight bristles of the first brush of Embodiment 3. FIG. 4 is a perspective view of a rotary cleaning body according to a fourth embodiment. The figure which shows the 1st brush removed from the rotating cleaning body. XX sectional view of FIG. 22. FIG. 6 is a perspective view of a mouthpiece body having a different shape.

Embodiments of the present invention will be described in detail below with reference to the drawings as appropriate.
FIG. 1 is a perspective view showing a state in which a vacuum cleaner 100 according to an embodiment of the present invention is housed in a support stand 70. In the drawings from FIG. 1 onwards, the front, back, left, right, top and bottom directions as seen from the cleaner body 1 are shown as appropriate.
Note that the vacuum cleaner 100 in FIG. 1 is in a stick state.

FIG. 2 shows a perspective view of the vacuum cleaner 100 of the embodiment in a handy state.
The vacuum cleaner 100 of the embodiment can be used for cleaning in various usage modes, such as a handy state (see FIG. 2) and a stick state (see FIG. 1).

The stick state of the vacuum cleaner 100 shown in FIG. 1 is a state in which the extension pipe 300 (accessory) and the standard suction body 200 (accessory) are connected. The standard suction body 200 is of a power brush type in which a brush is rotated by a motor. Note that although the vacuum cleaner 100 of this embodiment is a stick-type vacuum cleaner, the present invention is not limited to this and can be applied to a wide variety of vacuum cleaners such as canister-type vacuum cleaners and pail-type vacuum cleaners. The rotary cleaning body of the invention is applicable.
The vacuum cleaner 100 is stored in the support stand 70 when not in use. The support stand 70 includes a base portion 71 and a stand portion 72.
The vacuum cleaner 100 is used by connecting a small suction spout (accessory), a broom-shaped suction mouth (accessory), an extension hose (accessory), etc., all of which are not shown.

FIG. 3 shows an exploded view of the vacuum cleaner 100 of the embodiment.
FIG. 4 shows a side view of the vacuum cleaner 100 shown in FIG. 3 in an exploded state, viewed from the left side.
The vacuum cleaner 100 includes a vacuum cleaner main body 1, a dust case 2 (dust collector), a storage battery 3, and an airtight maintenance member 90.
The vacuum cleaner main body 1 includes a main body part 10, a motor case part 11, and a handle part 12.
The main body portion 10 is formed with a connection port 10a (suction port) to which an extension tube 300 (see FIG. 1), a standard suction body 200 (see FIG. 1), etc. are connected.

An accessory attachment can be connected to the connection port 10a.
The attachment includes an extension tube 300, a standard suction body 200, a small suction mouth (not shown), a broom-shaped suction mouth (not shown), and the like.
The connection port 10a has a built-in terminal (not shown) that is electrically connected to a circuit board (not shown). When a motor-driven attachment such as the standard suction body 200 is connected to the connection port 10a, the brush is rotated by the electrically connected motor.

A dust case 2 is detachably attached to the main body part 10. The main body 10 is provided with an introduction pipe 14 (see FIG. 4) that sends air containing dust sucked in from the connection port 10a into the dust case 2.
The motor case portion 11 includes an electric blower 40 (see FIG. 4) and a circuit board 50 (see FIG. 4). Further, a circular suction port (not shown) is formed on the front surface of the motor case portion 11, through which clean air after dust collection in the dust case 2 is sucked.

As shown in FIG. 2, an operation button 12b is provided on the upper surface of the first grip part 12a1 of the handle part 12. The operation buttons 12b include, for example, three buttons: "Strong", "Standard", and "Off".
Release buttons 18a and 18b are provided at the upper front end and upper rear end of the main body 10 to be operated when removing an attachment such as the extension tube 300. By pressing the release buttons 18a and 18b, the main body 10 and the attachment are unlocked, and the attachment can be removed from the main body 10.

As shown in FIG. 4, the dust case 2 is of a cyclone type.
The dust case 2 has a function of separating the dust-containing air sucked in from the introduction pipe 14 into dust and air, and collecting the dust.

FIG. 5 shows a top view of the vacuum cleaner 100 of the embodiment.
The connecting portion 91b of the airtight maintaining member 91 has extending portions 91b1, 91b1 extending rearward on both left and right sides. A concave portion 91b2 is formed between the left extending portion 91b1 and the right extending portion 91b1 in plan view.
The concave portion 91b2 fits into a protrusion 10d (see FIG. 3) formed on the upper surface of the distal end of the main body portion 10. Thereby, the airtight maintenance member 91 is positioned with respect to the connection port 10a (see FIG. 3) in the front-rear direction and the left-right direction.

When cleaning, when the vacuum cleaner 100 is used in a stick state (see FIG. 1), when removing dust left on the corner of the stairs, the extension tube 300 and standard suction port are removed from the vacuum cleaner 100. The body 200 is removed and made into a handy state. In this case, since the airtight maintenance member 91 remains attached to the vacuum cleaner 100, cleaning can be performed with increased suction power, and it is possible to prevent dust from being left behind.

<Standard mouthpiece 200>
FIG. 6 shows a top view of the standard mouthpiece body 200. FIG. 7 shows a bottom view of the standard mouthpiece body 200. FIG. 8 shows a side view of the standard mouthpiece body 200. As shown in FIG. 6, the standard suction body 200 shown in FIG. 1 includes a suction case 210 having a substantially T-shape when viewed from above, and a suction joint 213 connected to the suction case 210. The mouthpiece case 210 is formed from an upper case 210a and a lower case 210b.

When viewed from above, the mouthpiece case 210 includes a mouthpiece body 211 that is elongated in the left-right direction (width direction), and a connecting portion 212 that is connected to a mouthpiece joint 213 at the center of the mouthpiece body 211 in the left-right direction. . A brush 262 (see FIGS. 7 and 8) is installed on the lower surface of the mouthpiece body 211. The brush 262 has the role of preventing the standard suction body 200 from damaging the floor surface Y (see FIG. 1).
A part of the internal flow path S (see FIG. 7) that connects the suction port P (see FIG. 7) and the suction joint 213 (see FIG. 6) is formed in the connecting portion 212.

The mouthpiece body 211 is provided with bumpers 211a (FIGS. 6 to 8) by insert molding from the front end surface to the left and right side surfaces. The bumper 211a is made of an elastic material such as rubber or elastomer, or a resin material such as polypropylene. The bumper 211a ensures airtightness within the mouthpiece body 211 during use. Furthermore, when the standard suction body 200 collides with furniture or the like, it serves as a cushioning material that prevents damage to the furniture or the like and absorbs the impact on the suction body 211.

The mouthpiece joint 213 shown in FIG. 6 includes a first connecting portion 214 rotatably connected to the connecting portion 212, and a second connecting portion 215 rotatably connected to the first connecting portion 214. It is equipped with
The first connecting portion 214 has a substantially D-shape when viewed from above in FIG. 6, and has a cylindrical shaft 214a connected to the connecting portion 212. The axial direction of the shaft 214a is the left-right direction of the mouthpiece body 211, and both ends of the shaft 214a are supported by bearings (not shown) formed in the connecting portion 212.

The first connecting portion 214 is configured to be rotatable from a state substantially parallel to a state substantially perpendicular to the floor surface (cleaning surface) Y (see FIG. 8). That is, by rotating the first connecting portion 214 with respect to the suction case 210 about the shaft 214a, the extension tube 300 can be rotated between a state substantially parallel to the floor surface Y and a state substantially perpendicular to the floor surface Y. I can do it.

The second connecting portion 215 shown in FIG. 6 is configured so that the mouthpiece body 211 can be rotated with respect to the first connecting portion 214. For example, the extension tube 300 can be tilted from a state where it is substantially perpendicular to the floor surface Y to a state where the extension tube 300 is substantially parallel to the floor surface Y.
The second connecting portion 215 is provided with a power supply terminal 215a (see FIGS. 6 and 8) through which power is supplied. In this embodiment, electric power is supplied to the standard suction body 200 from the cleaner body 1 (see FIG. 1) through the extension tube 300.

<Rotating cleaning body 220>
As shown in FIG. 7, the standard suction body 6 includes a rotating cleaning body (rotating brush) 220. The suction mouth main body 211 of the suction mouth case 210 is formed with a brush chamber Q having a suction port P on the bottom surface (the surface facing the cleaning surface).
The rotary cleaning body 220 is disposed on the front side of the mouthpiece body 211 along the left-right direction, and is rotatably supported within the brush chamber Q.

Further, the rotary cleaning body 220 includes a plurality of types of brushes (225, 226) such as brushes having different hardnesses, heights, etc., and a rotary core 221 that holds the brushes in a spiral shape. In this embodiment, the case where four brushes (225, 226) are included in the loops 225r and 226r is exemplified, but this is not a limitation, and any number of brushes such as 2, 6, 8, etc. may be included. .
The brushes (225, 226) are formed of a large number of overlapping loop-shaped fibers (brush hairs) 225a, 226a having loops 225r, 226r that are visible from the front.

The rotary cleaning body 220 is continuously provided from one end side of the suction mouth main body 211 in the left-right direction (the rotation axis direction of the rotary cleaning body 220) to the other end side.
In addition, in this embodiment, the case where two types of brushes (225, 226) are provided is described as an example, but the invention is not limited to this, and the number of types may be one, or three or more types. The number of brushes may also be arbitrarily selected.
Further, a configuration may be added in which a blade member made of an elastic material such as rubber is arranged in a spiral manner between brushes arranged in a spiral manner, and this can be modified as appropriate. In this way, since the configuration of the brushes (225, 226) of the rotary cleaning body 220 can be easily changed, it is easy to adapt the suction body to different purposes, such as for use on wooden floors or carpets.

Furthermore, since each brush (225, 226) is inserted into a plurality of spiral grooves, the assembly process is easy and manufacturing costs can be reduced.
As shown in FIG. 7, the standard suction body 200 includes a brush drive switch 216 and wheels 217 on the bottom surface of the suction case 210. The brush drive switch 216 is a switch that detects whether the bottom surface of the standard suction body 200 is in contact with the floor surface Y (cleaning surface).
The brush drive switch 216 is configured together with the wheel 216a. As shown in FIG. 8, the wheel 216a is provided so that a portion of the wheel 216a always protrudes from the bottom surface of the mouthpiece case 210 by a biasing means such as a spring. Note that the shape of the mouthpiece of this embodiment is not limited to this standard mouthpiece 200, and can be applied to a wide variety of mouthpieces including a mouthpiece 200A having an LED light source that illuminates the floor surface and a lens body 202 as shown in FIG. The rotary cleaning body 220 and brushes (225, 226) of the present invention can also be applied to the body.

FIG. 9 shows a top view of the standard suction body 200 according to the embodiment with the upper case removed.
The standard suction body 200 houses an electric motor 240 that rotates the rotary cleaning body 220 and a circuit board 250.
When the brush drive switch 216 detects that the wheel 216a has protruded from the suction case 210 and is not in contact with the floor surface Y, the drive of the electric motor 240 is stopped under the control of the circuit board 250, and the rotation of the rotary cleaning body 220 is stopped. Stop. Further, when the brush drive switch 216 detects that the wheel 216a is pushed in and in contact with the floor surface Y, the electric motor 240 is driven under the control of the circuit board 250, and the rotary cleaning body 220 rotates.

FIG. 10 shows a perspective view of the rotary cleaning body 220.
FIG. 11A shows a view of the rotary cleaning body 220 in FIG. 10 in the I direction. FIG. 11B shows a view of the rotary cleaning body 220 in FIG. 11A in the II direction. FIG. 11C shows a view of the rotary cleaning body 220 in FIG. 11A in the direction of arrow III. FIG. 11D shows a cross-sectional view taken along the line IV-IV of the rotary cleaning body 220 in FIG. 11A.

FIG. 12A shows an exploded perspective view of a rotary cleaning body 220 having a rotary core 221, a brush cover 222, and a clutch body 223 in which a first brush 225 and a second brush 226 are fitted in a spiral shape.

FIG. 12B shows a V direction arrow view of the rotary core 221 in FIG. 12A,
FIG. 12C shows a view of the rotary core 221 in FIG. 12A in the VI direction.
The rotary cleaning body 220 includes a rotary core 221 , first and second brushes 225 and 226 , a brush cover 222 , and a clutch body 223 .
A first brush 225 and a second brush 226 are fitted into the rotary core 221 in a spiral shape. The base portions of the first brush 225 and the second brush 225 are made of resin or cloth, have a thin cloth shape, and fit into the brush attachment groove 221m (see FIGS. 12B and 12C) in the recess of the rotary core.

The clutch body 223 transmits the power of the electric motor 240 housed in the standard suction body 200 to the rotary core 221 in which the first brush 225 and the second brush 226 are fitted in a spiral shape. Further, the clutch body 223 is attached to one side of the rotary core 221 in which the first and second brushes 225 and 226 are fitted in a spiral shape, and the clutch body 223 is attached to one side of the rotary core 221 in which the first and second brushes 225 and 226 are fitted in a spiral shape. It functions as a stopper.

<Clutch body 223>
A speed reduction mechanism for the electric motor 240 is engaged with or fixed to the clutch body 223 .
The clutch body 223 is fitted and fixed to one side of the rotary core 221 in which a first brush 225 and a second brush 226 are fitted in a spiral shape.

<Brush cover 222>
The brush cover 222 has a first brush cover part 222a that includes a shaft inside, and a second brush cover part 222b that includes a bearing inside. The second brush cover part 222b is rotatably attached to the first brush cover part 222a, and the first brush cover part 222a is fixed to the mouthpiece body 200. Thereby, the rotary cleaning body 220 can be rotatably fixed to the mouthpiece body 220. The brush cover 222 is fitted and fixed to the other side of the rotary core 221 in which the first brush 225 and the second brush 226 are fitted in a spiral shape. Thereby, the brush cover 222 has a function of preventing the first and second brushes 225 and 226 from coming off from the rotary core 221.

<Rotary core 221>
The rotary core 221 shown in FIG. 12A is a long, generally cylindrical member made of resin.
The rotary core 221 has a through hole 221o (see FIGS. 12B and 12C) extending in the longitudinal direction at the center.
Four brush attachment grooves 221m into which two first brushes 225 and two second brushes 226 are fitted are formed in the outer circumference of the rotary core 221.

Each brush attachment groove 221m is formed in the outer periphery of the rotary core 221 so as to extend in the longitudinal direction of the rotary core 221 in a spiral shape from one end to the other end.

As shown in FIGS. 12B and 12C, the brush attachment groove 221m has a substantially Ω-shaped cross section with a long dimension s11 in the circumferential direction on the back side and a short dimension s12 on the outer peripheral surface side. ing.
First and second brushes 225 and 226, each having bristles sewn onto a cloth-like member, are inserted into the brush mounting grooves 221m of the end edge 221e of the rotary core 221.

FIG. 13A shows a front view of the rotary core 221 of FIG. 12A.
FIG. 13B shows an enlarged view of section VII in FIG. 13A. FIG. 13C shows an enlarged view of section VII in FIG. 13A of another example.

A corner 221k of the brush entrance 221i formed by the outer peripheral surface 221g, the short edge 221e, and the brush attachment groove 221m of the rotary core 221 shown in FIG. 13A is chamfered C (see FIG. 13B), and the corner is removed. . This prevents a phenomenon in which the looped bristles 225a, 226a get caught on the corner 221k when the first and second brushes 225, 226 are respectively fitted into the brush attachment grooves 221m of the rotary core 221, as shown in FIG. 13C. This is to avoid it.

Therefore, as described above, the corner 221k of the entrance 221i of the brush attachment groove 221m into which the first and second brushes 225 and 226 are inserted is chamfered to prevent the loop-shaped brush bristles 225a and 226a from getting caught. ing. In this way, the corner 221k of the brush entrance 221i of the rotary core 221 is chamfered C, the corner 221k is rounded, and the brush has a smooth shape with rounded corners.
The corner 221k of the brush entrance 221i of the rotary core 221 may have a shape other than a chamfer C or a corner R, such as a shape with curvature, as long as it has a gentle shape.

<First and second brushes 225, 226>
FIG. 14A shows a view of the first brush 225 before being attached to the rotary core 221 as viewed in a direction perpendicular to the extending direction, FIG. 14B shows a view taken in the direction of arrow VIII in FIG. 14A, and FIG. A view in the IX direction is shown.

FIG. 14D shows a view taken in the IX direction of FIG. 14A of another example different from FIG. 14C.
The first brush 225 includes brush bristles 225a and a cloth-like member 225b to which the brush bristles 225a are sewn or implanted.
The second brush 226 has bristles 226a and a cloth-like member 226b to which the bristles 226a are sewn or implanted.
The bristles 225a of the first brush 225 are thinner and softer than the bristles 226a of the second brush 226.

Here, the length of the brush bristles 225a, 226a to the floor surface Y = 0 (reference for the length to the floor surface Y) is as shown in FIG. This is the surface where the brush 262 on the lower surface of the mouthpiece body 211 that is in contact with the floor surface Y and the wheels 217 come into contact when it is placed on the floor surface Y.

In the state shown in FIG. 8, the bristles 225a of the first brush 225 have a length that makes contact with the floor surface Y.
The brush bristles 226a of the second brush 226 are thick and hard bristles. In the state shown in FIG. 8, the bristles 226a of the second brush 226 have a length that does not contact the floor surface Y.

As shown in FIG. 14A, the brush bristles 225a have a loop 225r shape when viewed in a direction perpendicular to the extending direction of the first brush 225, and are formed to overlap with adjacent brush bristles 225a. .
Similarly, the bristles 226a of the second brush 226 have a loop 226r shape when viewed in a direction perpendicular to the extending direction of the second brush 226, and are formed to overlap with adjacent bristles 226a. There is.

Further, as shown in FIGS. 7 and 6, when viewed from a direction perpendicular to the rotation axis of the rotary cleaning body 220 (arrow α11 direction), each of the bristles 225a and 226a of the first brush 225 and the second brush 226 is They have the shapes of loops 225r and 226r, and are formed so that adjacent brush bristles 225a and 226a overlap each other.
In other words, when looking at the rotary cleaning body 220 from the front (in the direction of arrow α11 in FIGS. 7 and 6), the bristles 225a and 226a of the first brush 225 and the second brush 226 have the shapes of the loops 225r and 226r. The brush bristles 225a and 226a overlap each other.

This configuration prevents fibers such as hair from becoming entangled during cleaning by rotation of the rotary cleaning body 220.
In this embodiment, nylon fibers are used for the brush bristles 225a and 226a. The brush bristles 225a and 226a may be made of other fibers, animal hair, or any other type of bristles without limitation.
The brush bristles 225a and 226a can be created using nylon fibers, other fibers, animal hair, or the like.

Since the first brush 225 and the second brush 226 in the rotary cleaning body 220 have the same configuration, the first brush 225 will be explained, and the explanation of the second brush 226 will be omitted.
As shown in FIG. 14A, the brush bristles 225a are sewn to the cloth-like member 225b.
Specifically, as shown in FIG. 14C, the brush bristles 225a are sewn in two rows substantially linearly along the longitudinal direction (extending direction) of the cloth body 225b. That is, the roots 225a1 and 225a2 where the brush bristles 225a are sewn to the cloth-like member 225b are arranged in two substantially straight lines.

Although the case is shown in which the two roots 225a1 and 225a2 of the brush bristles 225a in the shape of one loop 225r are lined up substantially in a straight line in the longitudinal direction, this is not the case; the shapes of adjacent loops 225r overlap each other. That's fine.

As shown in FIG. 14A, if the loops 225r of the brush bristles 225a overlap, even if the roots 225a3 are shifted, as shown in FIG. 14D, the brush bristles 225a can be (in the direction of arrow α11 in FIG. 7), the brush bristles 225a and 226a of the first brush 225 and the second brush 226 have the shapes of loops 225r and 226r, and the adjacent brush bristles 225a and brush bristles 226a overlap each other. If it is formed, the effect will be obtained.

Alternatively, if the loops 225r of the brush bristles 225a overlap with each other, even if the roots 225a3 are shifted, when looking at the rotary cleaning body 220 from the front (direction of arrow α11 in FIGS. 7 and 6), the first brush 225, The effect can be obtained if the bristles 225a, 226a of the two brushes 226 have the shapes of loops 225r, 226r and are formed so as to overlap with the adjacent bristles 225a, 226a.
Further, the bases 225a3 do not need to be in two rows, but may be in one row or three or more rows.

In this embodiment, the loops 225r and 226r of the bristles 225a and 226a of the first and second brushes 225 and 226 overlap with each other, with approximately 50% to 80% of each loop 225r and 226r overlapping the adjacent loops 225r and 226r, respectively. , it is possible to obtain the effect that hair is not caught between the loops 225r and 226r, but this is not limited to this.
It is only necessary that the loops of the brush bristles 225a and 226a of the first and second brushes 225 and 226 overlap each other, for example, depending on the thickness and hardness of the loops 225r and 226r, the adjacent loops 225r and 226r The overlap with the loops 225r and 226r may be 1% to 5% of one loop.

The heights from the seams of the loops 225r and 226r of the bristles 225a and 226a of the first and second brushes 225 and 226 are, for example, 6.5 mm and 8.5 mm, respectively, 1 mm between the two roots, and 3 mm between the loops. However, these dimensions can be selected arbitrarily.
If the lengths of the loops 225r and 226r of the brush bristles 225a and 226a do not make contact with the floor surface Y, it will be difficult to remove dust, and if they come into contact with the floor surface Y too much, hair will easily become tangled.
Further, when the length of the brush bristles 225a is short (does not come into contact with the floor surface Y), it is easy to prevent hair from getting entangled. Brush bristles 225a with short lengths (do not come into contact with the floor surface Y) are suitable for carpets and the like.

If the brush bristles 226a are long (in contact with the floor surface Y), it will be easier to remove dust. A brush with long bristles (in contact with the floor surface Y) is suitable for flooring, etc.
Therefore, the second brush 226 having a loop longer (1 mm) than the length to the floor surface Y is alternately provided with the first brush 225 having a loop shorter (1 mm) than the length to the floor surface. .
By alternately having first and second brushes 225 and 226 having loops 225r and 226r having different lengths, hardness, and thickness, it is possible to prevent hair from getting tangled on various floor surfaces Y and efficiently remove dust. It can be recovered.

<Manufacture of the first and second brushes 225 and 226>
A method of manufacturing the first and second brushes 225 and 226 will be explained.
Note that since the manufacturing methods of the first and second brushes 225 and 226 are the same, the first brush 225 will be explained, and the explanation of the second brush 226 will be omitted.

An example of the manufacturing process of the first brush 225 is shown in FIGS. 15A to 15C.
When manufacturing the first brush 225 shown in FIGS. 14A to 14D, a long brush body 225G is continuously produced as shown in FIG. 15A. That is, a long brush body 225G in which brush bristles 225a are sewn onto a cloth-like member 225b is prepared.
Therefore, it is necessary to cut it when forming the first brush 225 of the rotary cleaning body 220. Then, by cutting and separating the brush body 225G, a plurality of first brushes 225 can be obtained.

As shown in cutting line S0 in FIG. 15B, when the brush body 225G is cut straight perpendicular to the extending direction of the brush body 225G, the loop 225r of the brush bristles 225a is cut in the middle, and the bristles 225q pop out. There is a possibility that it will happen.
Therefore, as shown by cutting line S11 or cutting line S12 in FIG. 15C, the brush bristles 225a are cut obliquely in the extending direction of the brush body 225G. As a result, several millimeters (2 to 5 mm) of the end of the first brush 225 do not form the loop 225r, but it is possible to suppress the formation of bristles higher than the loop 225r in the brush bristles 225a.

In this way, by cutting the ends of the first brush 225 and the second brush 226 diagonally (cutting line S11 or cutting line S12), the brush bristles 225a and 226a at the ends are cut halfway during the manufacturing process. The occurrence of protruding hairs 225q (see FIG. 15B) can be suppressed.

FIG. 16 shows another example of the manufacturing process of the first brush 225.
A long brush body 225G1 in which brush bristles 225a are sewn to cloth bodies 225b and 226b with an interval (spacing, distance) between the bristles 225a and 226a for each length of the first brush 225 or the second brush 226. will be prepared.
In this case, as shown by cutting line S2 in FIG. 15, the brush body 225G1 can be cut straight perpendicular to the extending direction of the brush body 225G1.

The thus manufactured first brush 225 is fitted from the brush entrance 221i of the brush attachment groove 221m of the end 221e of the rotary core 221, as shown in FIG. 12A.
The second brush 226 is fitted from the brush entrance 221i of the other brush attachment groove 221m.
Since the corner 221k of the entrance 221i of the brush attachment groove 221m has a chamfer C (see FIG. 13B) or a corner R, it is possible to prevent the brush bristles 225a and 226a in the shapes of the loops 225r and 226r from getting caught.

Thereafter, as shown in FIG. 12A, the shaft portion 223j of the clutch body 223 is fitted into one side of the through hole 221o of the rotary core 221 to which the first brushes 225 and the second brushes 226 are attached alternately. be done. The shaft portion 222j of the clutch body 222 is fitted and fixed into the through hole 221o of the rotary core 221 on the other side. As a result, the rotary cleaning body 220 shown in FIG. 10 is completed.

FIG. 17 shows the first brush 225 and second brush 226 of the rotary cleaning body 220 being cleaned by the vacuum cleaner 100 and the cleaned hair h.
According to the above configuration, as shown in FIG. 17, when viewed from the direction perpendicular to the rotation axis of the rotary cleaning body 220 or from the front of the rotary cleaning body 220 (see FIGS. 1, 6, and 7), The bristles 225a of one brush 225 are formed in the shape of a loop 225r, and are formed to overlap with the adjacent bristles 225a. Further, the bristles 226a of the second brush 226 are formed in the shape of a loop 226r, and are formed to overlap with the adjacent bristles 226a.

Therefore, the hair h, fibers, etc. picked up by the rotating cleaning body 220 are supported by the elastic force of the loops 225r and 226r of the loop-shaped brush bristles 225a and 226a, and penetrate close to the roots 225n and 226n of the brush bristles 225a and 226a. to be suppressed or prevented.
As a result, hair h, fibers, etc. stay on the tip sides 225s and 226s of the bristles 225a and 226a of the brushes, and can be sucked by the suction force of the vacuum cleaner 100. Therefore, hair h, fibers, etc. are less likely to get entangled in the rotating cleaning body 220.

Therefore, the frequency of cleaning the rotary cleaning body 220 by the user is reduced. Therefore, in addition to the dust collection effect of the vacuum cleaner 100, handling properties are improved.
FIG. 18 shows the brush bristles 625a of the rotary cleaning body 620 being cleaned by the vacuum cleaner of the comparative example and the cleaned hair h.
As shown in FIG. 18 of the comparative example, when the brush bristles 625a of the rotary cleaning body 620 being cleaned by a conventional vacuum cleaner are straight bristles, the hair h, fibers, etc. that have been picked up are at the root of the straight bristles 625a. It penetrates close to 625n. Therefore, hair h, fibers, etc. tend to get entangled in the rotary cleaning body 620, and the user frequently cleans the rotary cleaning body 620, which may result in difficulty in handling.

On the other hand, according to the above-described configuration, it is possible to realize the suction body (200) in which fibers such as hair h are less likely to get entangled with the rotating cleaning body 220 of the rotary brush, and the vacuum cleaner 100 equipped with the suction body (200).
<<Embodiment 2>>

FIG. 19A shows a perspective view of the rotary cleaning body 320 of the second embodiment, and FIG. 19B shows the straight bristles 326a of the second brush 326 of the second embodiment.
The rotary cleaning body 320 of the second embodiment includes the first brush 325 having the loop-shaped bristles 325a described in the first embodiment, and the second brush 326 having straight bristles 326a.
The other configurations are similar to those of the first embodiment. Components of the second embodiment are shown with reference numerals in the 300s.

A first brush 325 having loop-shaped bristles 325a described in the first embodiment and a second brush 326 having straight bristles 326a shown in FIG. 18B are attached to the rotary core 321 of the rotary cleaning body 320.
The first brush 325 has short, loop-shaped bristles 325a that do not reach the floor surface Y in the state shown in FIG.
The second brush 326 has long straight bristles 326a that reach the floor surface Y in the state shown in FIG.

That is, the rotary cleaning body 320 of the second embodiment has short loop-shaped bristles 325a of the first brush 325 and long straight bristles 326a of the second brush 226.
Since the second brush 226 has straight bristles 326a, its anti-tangle effect is weakened, but it tends to pick up dirt.
Further, the cost can be reduced compared to the case where all of the rotary cleaning body 320 is made of loop-shaped bristles 325a.

<<Embodiment 3>>
FIG. 20A shows a perspective view of the rotary cleaning body 420 of the third embodiment, and FIG. 20B shows the straight bristles 325a of the first brush 425 of the third embodiment.
The rotary cleaning body 420 of the third embodiment includes a first brush 425 having straight bristles 425a and a second brush 426 having loop-shaped bristles 426a described in the first embodiment. The rest of the configuration is the same as that of the first embodiment. Components of Embodiment 3 are shown with reference numerals in the 400s.

A first brush 425 having straight bristles 425a shown in FIG. 20B and a second brush 426 having loop-shaped bristles 426a described in Embodiment 1 are attached to the rotary core 421 of the rotary cleaning body 420. .
The first brush 425 has short straight bristles 425a that do not reach the floor surface Y in the state shown in FIG.
The second brush 426 has long loop-shaped bristles 426a that reach the floor surface Y in the state shown in FIG.

If only the long bristles 425a of the second brush 426 in the third embodiment have looped bristles and the short bristles 425a of the first brush 425 have straight bristles 425a, it is possible to scrape dirt off a carpet or the like without diluting the anti-tangle effect compared to the second embodiment. Easy to get into. The cost can be reduced compared to the case where all the brush bristles of the rotary cleaning body 420 are formed into a loop shape.

<<Embodiment 4>>
FIG. 21 shows a perspective view of a rotary cleaning body 520 according to the fourth embodiment.
FIG. 22 shows the first brush 525 removed from the rotary cleaning body 520, and FIG. 23 shows a sectional view taken along the line XX in FIG. 22.
The rotary cleaning body 520 of the fourth embodiment includes a first brush 525 (see FIG. 22), which is an elastic blade member, and a second brush 526 having the loop-shaped bristles 526a described in the first embodiment. . The rest of the configuration is the same as that of the first embodiment. Components of the fourth embodiment are shown with reference numerals in the 500 series.

The first brush 525 shown in FIGS. 22 and 23 is made of a flexible elastic body such as rubber. The first brush 525 is made of, for example, an elastomer with a cleaning piece 525a at the tip having a thickness of about 1 mm.
The first brush 525 has a short cleaning piece 525a that does not reach the floor surface Y, and a fitting part 525b that is fitted into the brush attachment groove of the rotary core 521 (see FIG. 21). The first brush 525 of the blade is configured so as not to come into contact with the floor surface Y. Thereby, it is possible to suppress generation of abnormal noise due to contact of the first brush 525 of the blade with the floor surface Y.

The second brush 526 shown in FIG. 21 has long loop-shaped bristles 526a that reach the floor surface Y.
According to the configuration of the fourth embodiment, the entanglement prevention effect can be achieved at low cost without reducing the effect compared to the second and third embodiments.
In this way, the brush of the rotary cleaning body 520 can be a combination of a blade member (first brush 525) and a loop brush (loop-shaped bristles 526a).

<<Other embodiments>>
1. The present invention is not limited to the configurations of the embodiments described above, and various modifications and specific forms are possible within the scope of the appended claims.

100 Vacuum cleaner 200, 220A Suction body 220 Rotating cleaning body (rotating brush)
221k Corner (corner of the entrance of the brush body of the fitting groove)
225 First brush (brush body, first brush body that contacts the floor)
225a, 226a Brush hair (rotating brush hair)
225r, 226r loop 226 2nd brush (brush body, 2nd brush body that does not touch the floor)
325 First brush (first brush body where rotating brush bristles are formed)
326 Second brush (second brush body with straight bristles)
425 First brush (second brush body with straight bristles)
426 Second brush (first brush body where rotating brush bristles are formed)
525 1st brush (blade body)
C Chamfer S11, S12 Cutting line (the end of the bristles of the rotating brush is slanted so that the tip is on the inside)
Y Floor surface (floor)

Claims (11)

Attached to a vacuum cleaner to suck up dust on the floor,
Equipped with a rotating brush that rotates to remove dust.
The rotating brush has an elongated brush body in which bristles of the rotating brush are formed,
The brush body has a plurality of loop-shaped bristles formed therein, and
Each of the plurality of loop-shaped bristles overlaps an adjacent loop-shaped bristle in a direction perpendicular to the rotation axis around which the rotating brush rotates,
The two roots of each looped hair are
Adjacent and arranged in a straight line along the longitudinal direction of the brush body with two roots of each adjacent loop-shaped bristles,
The maximum distance between the hairs formed by the loop of the hairs is greater than the distance between the two roots, and
A suction body characterized in that the tip of the bristles and the part of the bristles forming the maximum distance overlap with adjacent loop-shaped bristles. Attached to a vacuum cleaner to suck up dust on the floor,
Equipped with a rotating brush that rotates to remove dust.
The rotating brush has an elongated brush body in which bristles of the rotating brush are formed,
The brush body has a plurality of loop-shaped bristles formed therein, and
Each of the plurality of loop-shaped bristles overlaps with an adjacent loop-shaped bristle when the brush body is viewed from a perpendicular direction,
The two roots of each of the loop-shaped bristles are adjacent to each other and are aligned in a straight line along the longitudinal direction of the brush body with the two roots of each adjacent loop-shaped bristles ,
The maximum distance between the hairs formed by the loop of the hairs is greater than the distance between the two roots, and
A suction body characterized in that the tip of the bristles and the part of the bristles forming the maximum distance overlap with adjacent loop-shaped bristles. The mouthpiece according to claim 1 or 2,
The two roots of each of the loop-shaped bristles are on different orthogonal cross sections to the rotation axis of the rotating brush, and the bristles that do not form a loop shape are located at the longitudinal end of the brush body of the rotating brush. A suction body characterized in that the bristles formed in a non-loop shape are formed to become shorter toward an end in the longitudinal direction of the brush body. The mouthpiece according to claim 1 or 2,
The brush body includes a first brush body having the loop-shaped bristles that contact the floor, and a second brush body having the loop-shaped bristles that do not contact the floor. body. The mouthpiece according to claim 1 or 2,
The brush body includes a first brush body having the loop-shaped bristles that contact the floor, and a second brush body having the loop-shaped bristles that do not contact the floor,
The mouthpiece body, wherein the loop-shaped bristles of the first brush body are softer than the loop-shaped bristles of the second brush body. The mouthpiece according to claim 1 or 2,
A suction body characterized in that the rotating brush includes a brush body on which the loop-shaped bristles are formed, and a blade body made of an elastic and flexible material. The mouthpiece according to claim 1 or 2,
The rotating brush has a brush body in which the loop-shaped bristles are formed, and a blade body made of an elastic and flexible material,
The suction body is characterized in that the blade body is configured so as not to come into contact with the floor. The mouthpiece according to claim 1 or 2,
The mouthpiece body, wherein the rotating brush includes a first brush body on which the loop-shaped bristles are formed, and a second brush body having straight bristles. The mouthpiece according to claim 1 or 2,
The rotating brush has a rotary core at the center, and a brush body that is fitted and attached to a fitting groove of the rotary core to form the loop-shaped bristles,
A suction body characterized in that a corner of the fitting groove at the entrance of the brush body is formed into a gentle shape. The mouthpiece according to claim 1 or 2,
The rotating brush has a rotary core at the center, and a brush body that is fitted and attached to a fitting groove of the rotary core to form the loop-shaped bristles,
A suction body characterized in that a corner portion of the fitting groove at the inlet of the brush body is chamfered or has an R portion formed therein. A vacuum cleaner comprising the suction body according to any one of claims 1 to 10.

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