JPH11239556A - Electric vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To face the front surface of a floor brush even to the side face direction of a user without making a user move, to surely suck dust from a floor surface at a wall edge and to perform cleaning in more than the width of the floor brush even to the floor surface having a narrow clearance to be disturbed with an obstacle at the upper part of the floor brush. SOLUTION: This electric vacuum cleaner is composed of a communication pipe 22 freely vertically turnably connected to the floor brush 1, a connection pipe 23 connected to the communication pipe 22 freely rotatably in the peripheral direction, an intake pipe 4 freely attachably and detachably connected to the connection pipe 23 and extended to an oblique the upper part, a handy hose freely attachably and detachably connected to the intake pipe 4 and provided with a handy hose operation part and a vacuum cleaner main body connected through a hose to the handy hose. An end part side to be connected to the connection pipe 23 in the communication pipe 22 is obliquely formed so as to be away from the floor brush 1 when the communication pipe 22 is horizontal to the floor surface 10 and the turning surface A of the connection part of the communication pipe 22 and the connection pipe 23 is formed obliquely to the floor surface 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a vacuum cleaner, for example.
Particularly, the present invention relates to a structure of a floor brush capable of surely sucking dust.

[0002]

2. Description of the Related Art FIG.
No. 8 and No. 2514688, a vertical sectional view showing a floor brush of a conventional vacuum cleaner of the same kind as disclosed in Japanese Patent Publication No. 2514688, and FIG. 13 shows a state in which a communication pipe is rotated upward with respect to the floor brush. FIG. 14 is a perspective view showing the positional relationship of the hose hand operation unit with respect to the same floor brush, and FIG. 15 is a plan view showing a state where the connecting pipe is rotated with respect to the same floor brush. In the figure, 1 is a floor brush of a vacuum cleaner, 2 is a communication pipe rotatably connected to the floor brush 1 up and down, 3 is connected to the communication pipe 2 so as to be rotatable in its circumferential direction, and upward from the middle. It is a bent connection pipe. The communication pipe 2 is normally maintained in a horizontal state, and when the communication pipe 2 is in the horizontal state, the turning surface A of the connecting portion between the communication pipe 2 and the connection pipe 3 is configured to be substantially perpendicular to the floor 10. ing.

[0003] Reference numeral 4 denotes an intake pipe detachably connected to the connection pipe 3, 5 denotes a hand pipe detachably connected to the intake pipe 4, 6 denotes a hose hand operation unit provided on the hand pipe 5, 7 denotes a hand A hose 8 connected to the pipe 5 is a cleaner body to which the hose 7 is detachably connected. The intake pipe 4 is composed of two freely connectable pipes. The floor brush 1 includes a floor brush body 11 composed of an upper case 12 and a lower case 13, and a rotary brush 14 driven by a motor (not shown) provided in the floor brush body 11.
, A suction port 15 formed in the lower case 13, a front wheel 16 provided in front of the lower case 13, and a rear wheel 17 provided behind the lower case 13. Reference numeral 18 denotes a bumper attached to the front of the lower case 13.

A conventional vacuum cleaner is constructed as described above, and a communication pipe 2 is connected to a floor brush 1 so as to be rotatable up and down, and a connection pipe 3 is rotatably connected to the communication pipe 2 in its circumferential direction. The suction pipe 4 is detachably connected to the connection pipe 3, and the suction pipe 4 connected to the cleaner body 8 with respect to the floor brush 1 is rotatable up and down and rotatable. In a state where the front surface of the floor brush 1 is orthogonal to the axis B direction of the intake pipe 4, the user reciprocates the intake pipe 4 back and forth in the axis B direction to reciprocate the front surface of the floor brush 1. When cleaning is performed, the angle formed by the suction pipe 4 and the floor 10 changes up and down, or the floor 1
Even if it changes from side to side to avoid obstacles on 0,
The floor brush 1 always keeps a parallel positional relationship with the floor surface 10.

In the conventional vacuum cleaner as described above, the floor brush 1 is reciprocated in the direction of the axis B while the front surface of the floor brush 1 is perpendicular to the direction of the axis B of the suction pipe 4. The front surface of the floor brush 1 is cleaned by reciprocating the front surface of the floor brush 1. For example, when the left side surface of the floor brush 1 comes to the wall 20, the floor surface 10 of the wall 20 is cleaned with a sufficient suction force. Against the wall 20 and the floor brush 1 against the wall 2
It is preferable to move the intake pipe 4 in such a manner that the direction of the axis B of the intake pipe 4 is perpendicular to the wall 20. Since the intake pipe 4 must be moved in parallel with the wall 20, there is a problem that it is difficult to operate the intake pipe 4.

Further, as shown in FIG. 15, by rotating and twisting the hand pipe 5, the front surface of the floor brush 1 orthogonal to the direction of the axis B of the intake pipe 4 is moved.
Can be considered to be parallel to the direction of the axis B. However, when the communication pipe 2 is in the horizontal state, the turning surface A of the connecting portion between the communication pipe 2 and the connection pipe 3 is configured to be substantially perpendicular to the floor 10. Therefore, even if the hand pipe 5 is rotated and twisted, the angle formed by the suction pipe 4 with respect to the front surface of the floor brush 1 when viewed from above is
Since only the angle α bent upward from the middle of the connecting pipe 3 changes, the front surface of the floor brush 1 does not become parallel to the direction of the axis B of the intake pipe 4, and the front surface of the floor brush 1 is
0, the user must eventually move. At this time, the direction of the axis B of the intake pipe 4 is skewed with respect to the wall 20, so that the hose hand operation unit 6
, The floor brush 1 must be moved so as to move in parallel with the wall 20 while the intake pipe 4 is skewed, so that the operation remains difficult.

In order to solve such a problem, another conventional vacuum cleaner has been proposed. FIG.
6 is a perspective view showing a positional relationship of a hose hand operation part with respect to a floor brush of another conventional vacuum cleaner, FIG. 17 is a perspective view showing the same floor brush, and FIG. FIG. 19 is a perspective view showing a state in which the axis of the intake pipe is parallel to the floor brush, and FIG. 20 is a side view showing the state in which the brush is parallel to the axis of the intake pipe. FIG. 21 is a perspective view showing a state in which the axis of the pipe is parallel to the floor surface, FIG. 21 is a plan view showing a use state of the same floor brush against a wall, and FIG. FIG. In the figure, the same components as those of the conventional vacuum cleaner are denoted by the same reference numerals, and the description of the duplicated components will be omitted.

In another conventional vacuum cleaner, a connecting pipe 3 is rotatably connected to a floor brush 1 so as to be vertically rotatable and bent upward at a right angle from the middle thereof, and a connecting pipe 3 is rotatable in a circumferential direction thereof. It is connected to the. The connection pipe 3 is bent upward at a certain angle from the middle, and the intake pipe 4 is connected thereto. Then, as shown in FIGS. 17 and 22, when the communication pipe 2 is in a horizontal state, the turning surface A of the connecting portion between the communication pipe 2 and the connection pipe 3 is configured to be substantially horizontal to the floor surface 10. Therefore, in the conventional vacuum cleaner, when the user of the vacuum cleaner reciprocates the floor brush 1 by holding the hand pipe 5, the communication pipe 2 is in a horizontal state with respect to the floor surface 10, and the communication is performed. The intake pipe 4 connected to the pipe 2 via the connection pipe 3 is used with a certain inclination with respect to the floor 10.

Also, as shown in FIG.
When the front surface of the floor brush 1 is orthogonal to the direction of the axis B, the suction pipe 4 is reciprocated in the direction of the axis B to reciprocate the front surface of the floor brush 1 for cleaning. When the left side surface of the wall comes to the edge of the wall 20, in order to clean the floor surface 10 of the edge of the wall 20 with a sufficient suction force, it is necessary to press the front of the floor brush 1 against the edge of the wall 20 and move the floor brush 1 in parallel with the edge of the wall In the case, the front of the floor brush 1 and the intake pipe 4
When the hand pipe 5 is twisted and rotated in a state where the direction of the axis B is perpendicular to the axis B, the communication pipe 2 rotates with respect to the suction pipe 4 and the connection pipe 3 integrated with the hand pipe 5 and the communication pipe 2 is attached to the floor brush 1. 19, the axis B of the intake pipe 4 does not move.
To the front surface of the floor brush 1 and the intake pipe 4 as shown in FIG.
Is parallel to the axis B, and the front surface of the floor brush 1 faces the side of the user, which is a surface in a direction orthogonal to the direction in which the user has reciprocated the floor brush 1 so far. And the direction of travel of the floor brush 1 and the intake pipe 4
Since the directions of the axis B are aligned with each other, there is no possibility that the force will escape, and the operation is easy and the wall 20 can be efficiently cleaned.

[0010]

In another conventional vacuum cleaner as described above, the vacuum cleaner is connected to a floor brush 1 so as to be rotatable up and down, and is connected to a communication pipe 2 which is bent upward at a right angle from the middle. A pipe 3 is rotatably connected in the circumferential direction, an intake pipe 4 is connected to the connection pipe 3, and a turning surface A of a connecting portion between the communication pipe 2 and the connection pipe 3 when the communication pipe 2 is in a horizontal state.
Is substantially horizontal with respect to the floor 10, a part of the connecting pipe 3 rises at a right angle upward in the middle of the communication pipe 2 connected to the floor brush 1. There is a problem that only the width of the floor brush 1 can be cleaned with respect to the floor 10 having a narrow gap L in which there is an obstacle 21 such as a bed and only the floor brush 1 can enter.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and enables the user to turn the front of the floor brush toward the side of the user without moving, so that the user can turn the front of the floor brush. Vacuum cleaner that can reliably suck dust on the floor surface of the floor brush and can clean the floor surface where there is an obstacle at the top of the floor brush and there is a narrow gap more than the width of the floor brush The purpose is to provide.

[0012]

According to the present invention, there is provided a vacuum cleaner comprising: a communicating pipe rotatably connected to a floor brush in a vertical direction;
A connection pipe rotatably connected to the communication pipe in a circumferential direction thereof,
A suction pipe detachably connected to the connection pipe and extending obliquely upward, a hand hose detachably connected to the suction pipe and having a hose hand operation unit, and a cleaner body connected to the hand hose via a hose. When the communication pipe is at a position substantially horizontal to the floor surface, the end of the communication pipe to which the connection pipe is connected is formed diagonally so as to be away from the floor brush, and the connection between the communication pipe and the connection pipe is formed. Is formed obliquely with respect to the floor surface.

Further, the rotation surface is formed substantially parallel to the axis of the intake pipe. Further, the end of the communication pipe to which the connection pipe is connected is formed obliquely downward so as to be away from the floor brush. Further, an inner wall surface of an end portion of the connection pipe connected to the communication pipe is formed in a curved surface.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a vertical sectional view showing a floor brush of a vacuum cleaner according to Embodiment 1 of the present invention, and FIG.
Is a longitudinal sectional view showing a state in which the communication pipe is rotated upward with respect to the same floor brush, FIG. 3 is a perspective view showing the same floor brush, and FIG. 4 is a perspective view showing a positional relationship of a hose hand operating portion with respect to the same floor brush. Fig. 5 and Fig. 5 are perspective views showing a state in which the axis of the intake pipe is parallel to the floor brush. Fig. 6 is a view in which the axis of the intake pipe is parallel to the floor brush and the axis of the intake pipe is the floor surface. FIG. 7 is a plan view showing a use state of the same floor brush near a wall, and FIG. 8 is a side view showing a use state of the same floor brush on a floor surface having an obstacle on an upper portion thereof.

In the drawing, the same components as those of the conventional example are denoted by the same reference numerals, and the description of the duplicate components will be omitted. Reference numeral 22 denotes a communication pipe having one end rotatably connected to the floor brush 1 up and down.
Reference numeral 3 denotes a connection pipe connected to the other end of the communication pipe 22 so as to be rotatable in the circumferential direction. A stopper 24 is provided at the connection between the communication pipe 22 and the connection pipe 23 as a stopper. An end of the communication pipe 22 to which the connection pipe 23 is connected is formed obliquely downward so as to be away from the floor brush 1. When the communication pipe 22 is at a horizontal position with respect to the floor 10, the rotation surface A of the connecting portion between the communication pipe 22 and the connection pipe 23 is inclined with respect to the floor 10, and It is formed in parallel with the axis B of the connected intake pipe 4. Furthermore, the curved surface portion 23 is formed on the inner wall surface of the right-angled bent portion 23a at the upper end connected to the communication tube 22 in the connection tube 23.
b is provided, and the inner wall surface at the location where the right-angled bent portion 23a is located is formed into a curved surface.

The intake pipe 4 connected to the connection pipe 23 and extending obliquely upward is formed by connecting the upper surface of the communication pipe 22 to the floor surface 10.
Is parallel to the floor surface 10, the angle α of the axis B of the intake pipe 4 with respect to the floor surface 10 (that is, the turning surface A of the connection portion between the communication pipe 22 and the connection pipe 23) is set to 20 ° to 45 °. It is configured. The angle α is determined by the user using the hose
The angle is appropriate for the operation based on the height of the hand holding the hand and the positional relationship with the floor brush 1, and otherwise, the normal cleaning operation is hindered. The communication pipe 22 thus connected
When the communication pipe 22 is parallel to the floor 10 as shown in FIG. 1, most of the communication pipe 22 is parallel to the floor 10 and The connecting portion between the communication pipe 22 and the connecting pipe 23 also faces obliquely downward at the outlet side, and the connecting pipe 23 rises toward the intake pipe 4 from a point on the inlet side.

Next, a method of using the vacuum cleaner according to the first embodiment of the present invention will be described. Normally, as shown in FIGS. 1, 3 and 4, the upper surface of the communication pipe 22 is made parallel to the floor 10 and the angle α of the axis B of the intake pipe 4 with respect to the floor 10 is set to 20 ° to 45 °. Then, the front surface of the floor brush 1 is made orthogonal to the direction of the axis B of the intake pipe 4, and the intake pipe 4 is reciprocated back and forth to reciprocate the front surface of the floor brush 1 for cleaning. And, for example, the left side of the floor brush 1
0, as shown in FIG.
To the left rotation about the axis B of the intake pipe 4.

Then, the communication pipe 22 rotates to the left with respect to the connection pipe 23 integral with the intake pipe 4, and the communication pipe 22 rotates upward with respect to the floor brush 1, so that the connection pipe 23
The rotation surface A of the connecting portion of the communication pipe 22 changes to a surface perpendicular to the floor 10, and the rotation surface A is the axis B of the intake pipe 4.
And the front surface of the floor brush 1 with respect to the axis B of the intake pipe 4 also changes from being orthogonal to parallel, and finally, as shown in FIG. 6 and FIG. The rotation surface A of the connection portion 22 is completely perpendicular to the floor 10, and the front surface of the floor brush 1 is located on the left side of the intake pipe 4 and is parallel to the axis B of the intake pipe 4. When the right side surface of the floor brush 1 comes to the side of the wall 20, if the hose hand operation unit 6 is twisted clockwise about the axis of the intake pipe 4, the communication pipe 22 moves to the right with respect to the connection pipe 23. And finally, the turning surface A of the connecting portion between the connection pipe 23 and the communication pipe 22 is completely perpendicular to the floor surface, and the front surface of the floor brush 1 is located on the right side of the suction pipe 4 so that the suction pipe 4 Is parallel to the axis B of

As described above, the front end of the floor brush 1 is perpendicular to the axis B of the intake pipe 4 by applying the clockwise or counterclockwise rotation of the hose hand operating section 6 about the axis B of the intake pipe 4. This can be changed in parallel, so that the user does not have to move not only in front of the user but also in the side, and the hose hand operating part 6 is connected to the intake Since it can be operated so as to move in the direction of B, it is easy to use, and it is possible to surely suck in dust without requiring excessive force.

Further, an end of the communication pipe 22 rotatably connected to the floor brush 1 and connected to the connection pipe 23 is connected to the connection pipe 23 so that the end of the communication pipe 22 is connected to the floor brush 1 so as to be spaced away from the floor brush 1. Since the upper surface of most of the communication pipe 22 can be maintained at substantially the same height as the upper surface of the floor brush 1 as shown in FIG. Not only the floor brush 1 but also a large part of the communication pipe 22 enters the floor 10 having a narrow gap L where there is an obstacle 21 and only the floor brush 1 can enter, as in the conventional example shown in FIG. Cleanable area no longer shrinks.

Further, the height of the upper surface of the suction pipe 4 can be set to the height of the upper surface of the floor brush 1 by twisting the hose hand operation unit 6 to reduce the angle of the suction pipe 4 with respect to the floor surface 10. In addition to the floor brush 1, not only the floor brush 1, but also the communication pipe 22, the connecting pipe 23, and the suction pipe 4 enter a narrow place where only the floor brush 1 can enter, so that the cleaning area can be expanded. Furthermore, since the inner wall surface of the connection pipe 23 where the right-angled bent portion 23a at the upper end connected to the communication pipe 22 is located is formed into a curved surface by providing a curved surface portion 23b.
By reducing the angle of the wind at the location where the right-angled bend 23a is located, noise generated by the wind passing near the location where the right-angled bend 23a is located is reduced.

FIG. 9 is a longitudinal sectional view showing a modified example of the floor brush. This modified example not only forms the inner wall surface of the connection pipe 23 with the right-angled bent portion 23a at the upper end connected to the communication pipe 22 into a curved surface, but also forms a lower surface connected to the communication pipe 22 in the connection pipe 23. The inner wall surface of the side end 23b is also formed as a curved surface. Therefore, the entire inner wall surface of the connection pipe 23 near the end connected to the communication pipe 22 is formed into a curved surface, and there is no linear portion near the connection between the communication pipe 22 and the connection pipe 23. Since the bending angle of the wind near the connection portion with the pipe 23 is reduced, noise generated by the wind passing near the connection portion between the communication pipe 22 and the connection pipe 23 is reduced.

Embodiment 2 FIG. FIG. 10 is a longitudinal sectional view showing a floor brush of a vacuum cleaner according to Embodiment 2 of the present invention, and FIG. 11 is a longitudinal sectional view showing a state in which a communication pipe is rotated upward with respect to the floor brush. In the figure, the same components as those of the first embodiment of the present invention are denoted by the same reference numerals, and the description of the duplicated components will be omitted. In the second embodiment, the connection pipe 23 in the communication pipe 22
Are formed diagonally upward so that the end side to which they are connected is separated from the floor brush 1. In the second embodiment, if the hose hand operation section 6 is twisted clockwise about the axis B of the intake pipe 4, the communication pipe 22 rotates to the left with respect to the connection pipe 23, and is finally connected. The point where the turning surface A of the connecting portion between the pipe 23 and the communication pipe 22 is completely perpendicular to the floor surface, and the front surface of the floor brush 1 is located on the left side of the intake pipe 4 and is parallel to the axis B of the intake pipe 4. Are different from those of the first embodiment, except for the differences.

[0024]

As described above, according to the present invention, the connecting pipe is rotatably connected in the circumferential direction to the communication pipe which is connected to the floor brush so as to be rotatable up and down, and the communication pipe is connected to the floor surface. When the communication pipe is at a substantially horizontal position, the end of the communication pipe to which the connection pipe is connected is formed diagonally so as to be away from the floor brush, so that the upper surface height of most of the communication pipe is substantially equal to the upper surface of the floor brush. Because it can be maintained at the same height, not only the floor brush but also the majority of the communication pipe can enter the narrow place where only the floor brush can enter, so that the cleaning area can not be reduced. Since the rotating surface of the connecting part is formed diagonally to the floor surface, the front surface of the floor brush, which is orthogonal to the axis of the intake pipe, is twisted with respect to the axis of the intake pipe by twisting the hose hand operation part. Can be changed almost in parallel. Without moving well ahead of the user, there is an effect that it becomes possible to suck the reliable garbage against the side. Furthermore, by twisting the hose hand operating part to reduce the angle of the intake pipe with respect to the floor, the height of the upper surface of the intake pipe can be set to the height of the upper surface of the floor brush. Not only the floor brush but also the communication pipe and the suction pipe are included, which has the effect of expanding the area that can be cleaned.

Further, since the rotation surface is formed substantially parallel to the axis of the intake pipe, the front surface of the floor brush perpendicular to the axis of the intake pipe is sucked by twisting the hose hand operating portion. It is possible to vary almost parallel to the axis of the pipe.

Further, since the end of the communication pipe to which the connection pipe is connected is formed obliquely downward so as to be away from the floor brush, the hose hand operating section is twisted so that the suction pipe is moved in the twisted direction. The front surface of the floor brush, which is orthogonal to the axis, is positioned on the twisted side of the intake pipe, and can be changed substantially in parallel to the axis of the intake pipe.

Further, since the inner wall surface at the end of the connecting pipe connected to the communication pipe is formed as a curved surface, there is no linear portion at the connection between the communication pipe and the connecting pipe, so that the bending angle of the wind is reduced. By reducing the size, there is an effect that noise generated by wind passing through the connecting portion between the communication pipe and the connection pipe is reduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a floor brush of a vacuum cleaner according to Embodiment 1 of the present invention.

FIG. 2 is a longitudinal sectional view showing a state in which a communication pipe is rotated upward with respect to the same floor brush.

FIG. 3 is a perspective view showing the floor brush.

FIG. 4 is a perspective view showing a positional relationship of a hose hand operation unit with respect to the floor brush.

FIG. 5 is a perspective view showing a state in which the axis of the intake pipe is parallel to the floor brush.

FIG. 6 is a perspective view showing a state in which the axis of the intake pipe is parallel to the floor brush and the axis of the intake pipe is parallel to the floor surface.

FIG. 7 is a plan view showing a use state of the same floor brush against a wall.

FIG. 8 is a side view showing a use state with respect to a floor surface having an obstacle above the floor brush.

FIG. 9 is a longitudinal sectional view showing a modification of the floor brush.

FIG. 10 is a longitudinal sectional view showing a floor brush of the electric vacuum cleaner according to Embodiment 2 of the present invention.

FIG. 11 is a vertical cross-sectional view showing a state in which a communication pipe is turned upward with respect to the floor brush.

FIG. 12 is a longitudinal sectional view showing a floor brush of a conventional vacuum cleaner.

FIG. 13 is a vertical cross-sectional view showing a state in which a communication pipe is rotated upward with respect to the same floor brush.

FIG. 14 is a perspective view showing a positional relationship of a hose hand operation unit with respect to the same floor brush.

FIG. 15 is a plan view showing a state where the connecting pipe is rotated with respect to the same floor brush.

FIG. 16 is a perspective view showing a positional relationship of a hose hand operation unit with respect to a floor brush of another conventional vacuum cleaner.

FIG. 17 is a perspective view showing the floor brush.

FIG. 18 is a side view showing a state in which the communication pipe is rotated upward with respect to the floor brush.

FIG. 19 is a perspective view showing a state where the axis of the intake pipe is made parallel to the floor brush.

FIG. 20 is a perspective view showing a state in which the floor brush is parallel to the axis of the intake pipe, and the axis of the intake pipe is parallel to the floor surface.

FIG. 21 is a plan view showing a use state of the same floor brush against a wall.

FIG. 22 is a side view showing a use state with respect to a floor surface having an obstacle above the floor brush.

[Explanation of symbols]

1 floor brush, 4 intake pipe, 5 hand hose,
6 Hose hand operation part, 7 Hose, 8 Vacuum cleaner body, 22 Communication pipe, 23 Connection pipe, A rotation surface,
B The axis of the intake pipe.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Koji Hasu 1728-1 Komaeda, Hanazono-cho, Osato-gun, Saitama Prefecture Mitsubishi Electric Home Equipment Co., Ltd.

Claims (4)

[Claims] 1. A communication pipe connected to a floor brush so as to be rotatable vertically, a connection pipe rotatably connected to the communication pipe in a circumferential direction thereof, and a connection pipe detachably connected to the connection pipe. It is detachably connected to the extending intake pipe and the intake pipe,
It consists of a hand hose having a hose hand operation part, and a cleaner body connected to the hand hose via a hose. When the communication pipe is at a substantially horizontal position with respect to the floor, the connection pipe in the communication pipe is connected. An electric vacuum cleaner characterized in that the end side of the vacuum cleaner is formed obliquely so as to be away from the floor brush, and the rotating surface of the connecting portion between the communication pipe and the connecting pipe is formed obliquely with respect to the floor surface. 2. The vacuum cleaner according to claim 1, wherein the rotation surface is formed substantially parallel to an axis of the intake pipe. 3. The vacuum cleaner according to claim 1, wherein an end of the communication pipe to which the connection pipe is connected is formed obliquely downward so as to be away from the floor brush. 4. The vacuum cleaner according to claim 1, wherein an inner wall surface of an end portion of the connection pipe connected to the communication pipe has a curved surface.