JPH0811104B2 - Vacuum cleaner suction body - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction port body of an electric vacuum cleaner provided with a rotating brush that is rotationally driven by a turbine, and more particularly, to a connection for connecting to a cleaner body. Regarding the positional relationship between the pipe and the turbine.

(Prior Art) Conventionally, in a suction port body of an electric vacuum cleaner provided with a rotary brush driving turbine, as described in, for example, JP-A-57-180929, a rotary brush chamber is connected via a communication chamber. A structure is adopted in which a turbine is arranged in a portion of the connecting pipe that is in communication with each other and that can be turned up and down, and that is located in the communication chamber.
However, in the conventional structure disclosed in Japanese Patent Laid-Open No. 57-180929, the rotation angle of the connecting pipe changes because the length of the intake airflow that drives the turbine passes through the turbine due to the rotation of the connecting pipe. Therefore, there is a drawback that the rotational speeds of the turbine and the rotary brush are changed.

Further, in the suction port body of the electric vacuum cleaner disclosed in JP-A-57-180929, a communication opening facing the turbine and another communication opening / closing not facing the turbine are provided between the rotary brush chamber and the communication chamber. As a structure provided with a mouth, rotation and non-rotation of the turbine can be selected. However, since the turbine is installed in the communication chamber, even when cleaning the floor or folds without rotating the turbine, unnecessary air is struck by air or dust, and noise is generated. Grow to need.

Therefore, as described in Japanese Utility Model Laid-Open No. 56-139449, a turbine is provided outside the connecting pipe, and a switching valve
A suction port body of an electric vacuum cleaner has been proposed in which an air passage passing through a turbine and an air passage reaching a connecting pipe without passing through the turbine can be switched. In the suction port body of the electric vacuum cleaner disclosed in Japanese Utility Model Laid-Open No. 56-139449, an opening for communicating a turbine chamber formed by a switching valve and the connecting pipe is provided on the side surface of the turbine to rotate the turbine. The structure is such that they are opposed to each other on the front side of the shaft, that is, on the side of the rotating brush chamber, and the air flowing from the rotating brush chamber to the turbine is bent into the connecting pipe on the front side of the turbine while flowing in. However, in the structure described in Japanese Utility Model Laid-Open No. 56-139449, the length of the air flow passing through the turbine is short and the air flow is bent, so that the efficiency of applying the rotational torque to the turbine is reduced.

Further, as described in Japanese Utility Model Laid-Open No. 55-133943, an opening that connects the turbine chamber and the inside of the connecting pipe to the rotating shaft portion of the connecting pipe that is rotatable up and down and that is located entirely behind the turbine. There is also proposed a suction port body of an electric vacuum cleaner which has a structure provided with a portion and bends exhaust gas discharged from a turbine in a direction orthogonal to a rotation axis of the turbine and sucks the exhaust gas through an opening. However, in the structure described in Japanese Utility Model Laid-Open No. 55-133943, although a large rotational torque is obtained, since the entire opening of the connecting pipe is located rearward of the turbine, the suction port main body moves in the front-back direction. It becomes longer and hinders reduction in size and weight.

(Problems to be Solved by the Invention) As described above, the electric vacuum cleaner disclosed in Japanese Utility Model Laid-Open No. Sho 56-139449 bends the airflow near the center of the rotation axis of the turbine or at the front side to discharge the airflow from the turbine chamber. Sufficient rotation torque was not obtained with the suction mouth, while
No. 43 publication, a suction port body of an electric vacuum cleaner in which an opening for communicating a turbine chamber formed in a rotating shaft portion of a vertically rotatable connecting pipe with the inside of the connecting pipe is arranged rearward of the entire turbine. Then, there is a problem that the suction port main body becomes long in the front-rear direction.

The present invention is intended to solve such a problem, and makes it possible to obtain a sufficient rotational torque in a suction port body of an electric vacuum cleaner that bends exhaust gas from a turbine and flows it into a connecting pipe. The purpose is to enable reduction in size and weight. Further, it is an object of the present invention to rotate the turbine in the suction port body of the electric vacuum cleaner with higher efficiency. Furthermore, it is intended to prevent the entanglement of yarn waste or the like with the turbine.

(Means for Solving the Problems) The suction port body of the electric vacuum cleaner according to claim 1 is a rotary brush chamber having a suction port, a communication chamber openably and closably communicating with the rotary brush chamber, and a separate communication chamber from the communication chamber. A suction port body having a turbine chamber communicating with the rotating brush chamber formed therein,
A connection pipe that is supported by the suction port main body so as to be able to turn up and down while facing the communication chamber and has a shaft opening portion that connects the communication chamber and the turbine chamber to the rotation shaft portion, and that rotates in the rotary brush chamber. A freely supported rotating brush, and a plurality of blades that are rotatably supported in the turbine chamber with the rotation axis direction of the connecting pipe substantially parallel to the rotation axis direction and that are radially arranged with respect to the rotation axis. And a turbine for rotating and driving the rotating brush by being rotated by a suction air flow, the front opening of the shaft opening of the connecting pipe being disposed at a position substantially overlapping the rotation shaft of the turbine, and the shaft opening. The blade opening is formed on the side wall of the turbine adjacent to the blade section so as to face the space between the blade sections.

The suction port body of the vacuum cleaner according to claim 2 is the suction port body of the vacuum cleaner according to claim 1, wherein the turbine chamber communicates with the rotating brush chamber at a position facing a lower portion of the turbine.
A guide wall that is located rearward of the rotation axis of the turbine and whose distance from the outer circumference of the turbine gradually increases toward the rear is provided from the bottom surface of the turbine chamber to the vicinity of the height of the rotation axis of the turbine.

The suction port body of the vacuum cleaner according to claim 3 is the suction port body of the vacuum cleaner according to claim 1 or 2, wherein the turbine chamber communicates with a rotating brush chamber at a position facing a lower portion of the turbine. And a wall surface adjacent to the outer periphery of the turbine at the rear of the turbine and near the height of the rotating shaft of the turbine is hung from the upper surface of the turbine chamber.

(Operation) In the suction port body of the electric vacuum cleaner according to claim 1, the rotary brush chamber and the communication chamber are communicated with each other when cleaning the floor, the fold, and the like, but in this state, the air flow that sucks dust is suctioned. It flows from the mouth into the connecting pipe through the rotary brush chamber and the communication chamber, and hardly passes through the turbine chamber. On the other hand, when cleaning a carpet or the like, the rotary brush chamber and the communication chamber are shut off from each other, but in this state, the air flow is generated from the rotary brush chamber to the turbine chamber and the rotation shaft portion of the connecting pipe which can be lifted and lowered. It flows into the connecting pipe through the shaft opening. Then, the turbine is rotated by the air flow passing through the turbine chamber, and the rotating brush that is rotationally driven by the turbine scrapes dust from the carpet or the like. At that time, since the front edge of the shaft opening almost overlaps the rotating shaft of the turbine,
A part of the air flow passing through the turbine is bent in the rotation axis direction of the turbine and is sucked along the blade portion of the turbine from the blade opening portion of the side wall of the turbine to the shaft opening portion. Therefore, the air compression generated between the blade portions is reduced, and the noise due to this air compression is reduced. In this way, a part of the air flow through the turbine is bent, but the axial opening overlaps the rear side of the turbine, so the distance that the air flow passes through the turbine is long, and high rotational torque is applied to the turbine. To be

According to a second aspect of the present invention, in the suction port body of the electric vacuum cleaner according to the first aspect, the air flow blown from the rotating brush chamber to the lower portion of the turbine is provided between the blade portions in the lower portion of the turbine. While passing, it is sucked into the shaft opening while being guided from the bottom surface in the turbine chamber to the vicinity of the height of the rotating shaft of the turbine by the guide wall surface whose distance from the outer circumference of the turbine gradually increases rearward. Therefore, the change in the flow velocity of the air passing through the outer periphery of the turbine becomes smooth, the fan efficiency is improved, and the noise is reduced.

The suction port body of the vacuum cleaner according to claim 3 is the suction port body of the vacuum cleaner according to claim 1 or 2, wherein the air flow blown from the rotating brush chamber to the lower part of the turbine passes through the lower part of the turbine. , As it rises behind the turbine, the wall surface that hangs from the upper surface of the turbine chamber and is adjacent to the outer periphery of the turbine behind the turbine and near the height of the rotating shaft of this turbine is It prevents the wall surface from moving forward and prevents air and lint from getting into the turbine.

(Embodiment) The construction of an embodiment of the suction inlet of the electric vacuum cleaner of the present invention will be described below with reference to FIGS. 1 to 4.

Reference numeral 11 denotes a suction port main body, and the suction port main body 11 includes a lower main body case 12 having an open upper surface and an upper main body case 14 having an open lower surface coupled to an upper side of the lower main body case 12 via a bumper 13. However, this upper body case 14
The front part of the lid 15 is detachable from the lower body case 12
Has become. Then, inside the suction port body 11, partition walls 16 to 19 integrally formed with the lower body case 12 and the upper body case 14, respectively, by the rotary brush chamber 20, the switching knob chamber 21, the communication chamber 22 and the turbine chamber. 23 and turbine holding chamber
24 and 24 are sectioned. That is, the front / rear partition wall 16 extending in the left / right direction forms the rotary brush chamber 20 on the front side, and the left / right partition walls 17 to 19 extending rearward from the front / rear partition wall 16 side by side in the rear direction in the switching knob chamber 21. And communication room 22
A turbine chamber 23 and a turbine holding chamber 24 are formed.

A suction port 31 is formed in the bottom surface of the lower body case 12 so as to face the rotary brush chamber 20. The front and rear partition walls 16 are formed with a first communication port 32 having a relatively large opening area facing the communication chamber 22, and a second communication port 33 having a relatively small opening area facing the lower portion of the turbine chamber 23. The belt insertion opening 34 is formed so as to face the turbine holding chamber 24 while being formed. Further, a connection pipe insertion port 35 is formed in the rear surface of the suction port body 11 so as to face the communication chamber 22.

On the other hand, 41 is a connecting pipe, and this connecting pipe 41 is the suction port main body 11
It is located at the center of the rear part and is rotatably held by a lower body case 12 and an upper body case 14 at a predetermined angle. The connecting pipe 41 includes a turning pipe 42 whose rear portion is formed into a substantially cylindrical shape, and a bent cylindrical connecting pipe 43 which is fitted and connected to the rear portion of the turning pipe 42 so as to be rotatable in the circumferential direction. It consists of Further, the front portion of the turning tube 42 is a semi-cylindrical portion 45 having a front end opening portion 44, and a supporting shaft portion 46 is formed on the end surface of the semi-cylindrical portion 45 on the switching knob chamber 21 side. A cylindrical support shaft portion 48, which has a shaft opening 47 inside, is formed coaxially with the support shaft portion 46 on the opposite end surface portion. The supporting shaft portions 46, 48 are rotatably fitted in the bearing holes 49, 50 formed in the partition walls 17, 18 on both sides of the communication chamber 22, so that the semi-cylindrical portion 45 communicates. The turbine chamber 23 is rotatably supported in the chamber 22 in the front-rear direction, and the shaft chamber 47 communicates the turbine chamber 23 with the inside of the connecting pipe 41. The connection pipe 43 is projected rearward via the connection pipe insertion port 35 so as to be lifted up and down.

On the other hand, 51 is a switching knob, and the switching knob 51 is supported on a pair of guide ribs 52 formed in the switching knob chamber 21 so as to be slidable left and right. A knob portion 53 is formed on the upper surface of the switching knob 51 so as to project. The knob portion 53 projects outward from the upper main body case 14 and can be operated from the outside. In addition, on the front part of the switching knob 51, an opening / closing plate that slides on the front surfaces of the front and rear partition walls 16 and closes the first communication port 32 so that the first communication port 32 can be opened and closed.
54 is integrally formed. Further, an engagement piece 55 is formed on the rear portion of the switching knob 51. On the other hand, in the switching knob chamber 21, a pair of left and right engaging recesses 56 are formed to which the engaging pieces 55 are detachably engaged to hold the switching knob 51 at a predetermined position.

Further, 61 is a rotating brush, and this rotating brush 61 has a plurality of brush bristles 63 planted on the outer peripheral surface of a cylindrical brush base 62 whose left-right direction is the longitudinal direction and which is the axial direction. A large-diameter gear-shaped pulley 64 is coaxially fixed to one end of 62. Further, rotating shafts 65, 65 are coaxially fixed to both ends of the brush base 62, and bearings 66, 66 having a quadrangular outer peripheral surface are freely rotatable on the rotating shafts 65, 65. Is fitted to. On the other hand, bearing support parts 67, 67 each formed of a rib having a substantially U-shape in a side view are formed on both left and right end surfaces in the rotary brush chamber 20, and the bearings 66, 66 are respectively formed on the bearing support parts 67, 67. By being detachably fitted, the rotary brush 61 is rotatably supported in the rotary brush chamber 20 with the axial direction as the rotational axis direction.

Reference numeral 71 denotes an air turbine, which is fixed to the left side in FIG. 1 of a rotary shaft body 72, which is a rotary shaft extending in the left-right direction. A small-diameter gear-shaped pulley 73 is provided at the right end of the rotary shaft 72 in FIG. Further, the rotating shaft 72 has a turbine 71 and a pulley 73.
The bearing 74 is rotatably fitted in the bearing 74. The bearings 74 are fixed to the partition wall 19 and a pair of left and right support walls 75 formed in the turbine holding chamber 24, so that the turbine 71 is rotatably supported in the turbine chamber 23. Further, a timing belt 76 is stretched around the pulley 73 of the turbine 71 and the pulley 64 of the rotating brush 61. The timing belt 76 is inserted through the belt insertion opening 34 of the front and rear partition wall 16.

Further, in the turbine 71, a plurality of blade portions 82, 82 are integrally formed radially on the outer peripheral surface of the cylindrical portion 81 through which the rotating shaft body 72 is fixed, as viewed in the rotating shaft direction. The wings 82, 82 are inclined from the cylindrical portion 81 toward the outer peripheral side in the forward direction when positioned below the cylindrical portion 81, and are arcuate in the same direction. It is curved. Further, a substantially circular blade opening 84 facing the space between the blades 82 is formed in the center of the side wall 83 of the turbine 71 on the side of the communication chamber 22, and the side wall 85 on the opposite side is entirely closed. . The blade portion 82 is divided into right and left portions of the turbine 71, and the left and right blade portions 82 are offset from each other in the rotation direction.

The rotation axis direction of the rotation tube 42 of the connection pipe 41 and the turbine
Although parallel to the rotation axis direction of 71, the shaft opening 47 of the connecting pipe 41 and the turbine 71 partially overlap each other when viewed in the rotation axis direction. In the turbine 71, the overlapping portion is behind the rotation axis of the turbine 71, that is, the rotating brush chamber 20.
It is a part on the opposite side to and is less than half of the opening area of the shaft opening 47.

In the turbine chamber 23, an air flow guide 91 is provided behind the rotation axis of the turbine 71. The airflow guide 91 is provided from the bottom of the turbine chamber 23 to the turbine 71.
Has a guide wall surface 92 that reaches the height of the rotation axis of the turbine and the distance from the outer periphery of the turbine 71 gradually increases toward the rear, and also has a cylindrical communication pipe portion 93 at one end. The communication pipe portion 93 is rotatably fitted in the shaft opening 47 of the connecting pipe 41. In addition, the turbine
An isolation wall surface 94 whose lower end is adjacent to the outer periphery of the turbine 71 behind the 71 and near the height of the rotating shaft of the turbine 71 is integrally provided so as to vertically extend from the upper surface in the turbine chamber 23.

 Next, the operation of the above embodiment will be described.

At the time of cleaning, the tip of the hose or extension pipe connected to the cleaner body (not shown) is detachably fitted and connected to the connection pipe 43.

When it is not necessary to rotate the rotary brush 61 by cleaning the floor or folds, the switching knob 51 is slid in the direction A to open the first communication port 32 as shown by the chain line in FIG. deep. In this state, when the electric blower in the cleaner body is driven, it flows in through the suction port 31 and the rotary brush chamber 20,
An air flow is generated through the first communication port 32, the communication chamber 22, the tip end opening 44 of the connecting pipe 41, the inside of the connecting pipe 41, the extension pipe and the hose to reach the cleaner body. At the same time, an airflow that flows into the connecting pipe 41 from the rotary brush chamber 20 through the second communication port 33, the turbine chamber 23, and the shaft opening 47 is generated, but the second communication port 33 is smaller than the first communication port 32. Since the air passage resistance due to the turbine 71 and the like is also large, most of the airflow enters from the first communication port 32 and flows into the connecting pipe 41 without passing through the turbine 71, while at the second communication port 33. The wind speed is slow, and the air flow passing through the turbine 71 does not rotate the turbine 71.
61 does not rotate.

Then, the dust sucked together with the airflow is guided to the dust collecting chamber of the cleaner main body and trapped therein.

On the other hand, when it is necessary to clean the carpet or the like and rotate the rotary brush 61, as shown by the solid line in FIG.
The switching knob 51 is slid in the direction B, and the opening / closing plate 54 closes the first communication port 32. In this state, all the airflows flow into the turbine chamber 23 from the second communication port 33, and are blown to the lower portion of the turbine 71 from the front at a high speed, and the blades inclined forward from the rotary shaft in the lower portion. Part 82
The turbine 71 rotates in the counterclockwise direction in FIG. The rotation of the turbine 71 is transmitted to the rotary brush 61 via the pulley 73, the timing belt 76 and the pulley 64, and the rotary brush 61 rotates. Then this rotating rotating brush
The brush bristles 63 of 61 scrape out dust from an object to be cleaned such as a carpet, and the scraped dust is sucked through the suction port 31.

At that time, the air flowing into the turbine chamber 23 from the second communication port 33 collides with the blade portion 82 of the turbine 71 and flows toward the center of the turbine 71 along the inclination of the blade portion 82. Compressed at the base of 82. However, there is a blade opening 84 in the side wall 83 of the turbine 71 on the side of the connecting pipe 41, and the connecting pipe 41
Since the front side edge of the shaft opening 47 of the turbine 71 substantially overlaps the rotary shaft body 72 of the turbine 71, that is, the projection of the shaft opening 47 of the connecting pipe 41 in the direction of the rotation axis overlaps the side of the turbine 71. A part of the air compressed between the wing portions 82 flows along the wing opening portion 84 to the shaft opening portion 47 of the connecting pipe 41, as shown by the arrow in FIG. Therefore, the air pressure on the center side of the turbine 71 between the blade portions 82 decreases, so that the blade portions 82
Noise due to air compression between the two can be prevented. The other part of the air passing through the turbine 71 is not bent and the turbine 71
Pass through the turbine 71 in a direction perpendicular to the rotation axis direction of.

By the way, as described above, a part of the air passing through the turbine 71 is bent and discharged from the blade opening 84, and the shaft opening 47 for sucking the exhaust gas from the blade opening 84 is located at the rear side of the turbine 71, that is, Since it is opposed to the rotary brush chamber 20 on the opposite side, the distance that the air flow passes through the turbine 71 is long, and the turbine 71 is given a sufficiently high rotational torque.

Further, the air flowing along the rotation direction of the turbine 71 is
When it comes rearward from the rotation axis of the turbine 71, as shown by the arrow in FIG. 3, while flowing along the guide wall surface 92 of the airflow guide body 91, it turns toward the shaft opening 47 of the connecting pipe 41. , Is sucked into the inside of the connecting pipe 41. At this time, the air passage cross-sectional area between the outer periphery of the turbine 71 and the guide wall surface 92 gradually increases in the direction of the air flow, so that the air passage cross-sectional area suddenly increases in the lower rear part of the turbine as in the conventional case. Unlike the case where the air becomes large, as shown by the arrow in FIG.
When passing the outer circumference of 71, a rapid change in wind speed, that is, no decrease occurs, and the wind speed becomes almost constant up to the height of the rotation axis of the turbine 71. Therefore, the airflow will impart more rotational force to the turbine 71 before turning and entering the shaft opening 47.

Furthermore, in the rear part of the turbine 71, the wind direction changes and turbulence occurs, but coarse dust such as air and lint in this part is separated by the separating wall surface 94 on the rear upper side of the turbine 71, and this wall surface is separated. Since it is blocked from moving forward from 94,
This turbine 71 caught in the rotating turbine 71
The shaft opening 47 of the connecting pipe 41
Will be inhaled to. That is, it is possible to prevent air and coarse dust from being reflected on the rear surface of the turbine chamber 23 and being re-engaged in the turbine 71.
Entanglement to 71 can be prevented.

Further, since the shaft opening 47 of the connecting pipe 41 has a circular shape centering on the rotating shaft, even if the connecting pipe 41 rotates, the area of overlap with the turbine 71 is kept constant, therefore ,
The rotation torque does not change.

According to the above configuration, not only can the noise be reduced without reducing the rotational torque of the turbine 71 as described above, but
The front side edge of the shaft opening 47 of the connecting pipe 41 and the rotating shaft of the turbine 71.
By arranging the shaft opening 47 of the connecting pipe 41 and the turbine 71 so as to overlap in the front-rear direction when viewed from the axial direction so as to substantially overlap with 72, the suction port main body 11 can be particularly shortened in the front-rear direction, and therefore, Compact and lightweight.

In the above embodiment, the circular blade opening 84 is formed in the center of the side wall 83 adjacent to the connecting pipe 41 of the turbine 71.
As shown in FIG. 5, the entire portion of the side wall 83 facing between the adjacent wing portions 82 is opened as a wing opening 84, and every other wing opening 84 is provided between the plurality of wing portions 82. It may be formed.

Further, the guide wall surface 92 may be formed integrally with the lower body case 12 or the like.

Further, the guide wall surface 92 and the isolation wall surface 94 may not be provided if not necessary.

(Effect of the invention) According to the suction port body of the electric vacuum cleaner of claim 1, the front side edge of the shaft opening portion facing the turbine chamber formed in the rotating shaft portion of the connecting pipe substantially overlaps with the rotating shaft of the turbine. Since the blade opening is formed in the side wall of the turbine adjacent to the shaft opening, air compression between the blades of the turbine can be reduced, noise due to air compression can be prevented, and the suction port main body It can be shortened in the front-back direction and can be made compact and lightweight,
Moreover, since the air flow has a long distance to pass through the turbine, a sufficient rotational torque can be obtained.

According to the suction port body of the electric vacuum cleaner according to claim 2, in addition to the suction port body of the electric vacuum cleaner according to claim 1, the suction port body is located rearward of the rotating shaft of the turbine and the distance from the outer periphery of the turbine is rearward. Since the guide wall that gradually increases toward the height of the rotary shaft of the turbine is provided from the bottom of the turbine chamber, the flow velocity of the air flowing around the outer circumference of the turbine can be kept close to the height of the rotary shaft. The turbine can be rotated with high efficiency and noise can be reduced.

According to the suction port body of the electric vacuum cleaner according to claim 3, in addition to the suction port body of the electric vacuum cleaner according to claim 1 or 2, the outer periphery of the turbine is provided at the rear of the turbine and near the height of the rotating shaft thereof. Since the adjacent wall surfaces are vertically provided from the upper surface of the turbine chamber, they can be blocked by the curved wall surfaces of air and dust at the rear of the turbine to prevent them from being caught in the turbine and to prevent thread dust or the like from being entangled in the turbine.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a suction port body of an electric vacuum cleaner according to the present invention with an upper main body case removed and the upper part cut away,
2 is a sectional view of the same as above, FIG. 3 is a perspective view of the same connecting pipe and air flow guide body as above, FIG. 4 is a perspective view of the same turbine as above, and FIG. 5 is a perspective view of a turbine showing another embodiment of the present invention. Is. 11 …… Suction port body, 20 …… Rotating brush chamber, 22 …… Communication chamber, 23 …… Turbine chamber, 31 …… Suction port, 41 …… Connection pipe,
47 …… Shaft opening, 61 …… Rotating brush, 71 …… Turbine,
82 …… wing part, 83 …… side wall, 84 …… wing opening part, 92 …… guide wall surface, 94 …… wall surface.

Front Page Continuation (72) Inventor Ikuo Oshima 43 Horiyamashita, Hadano City, Kanagawa Prefecture, Tokyo, Electric Power Company, Hadano Plant (56) References JP 61-87517 (JP, A) JP, U) Actual public Sho 61-37391 (JP, Y2)

Claims (3)

[Claims] 1. A rotary brush chamber having a suction port, a communication chamber openably and closably communicating with the rotary brush chamber, and a suction port main body having a turbine chamber communicating with the rotary brush chamber separately from the communication chamber. In the rotary brush chamber, there is provided a connecting pipe, which is supported by the suction port main body so as to face the communication chamber so as to be able to rotate upward and downward, and which has a shaft opening portion for connecting the communication chamber and the turbine chamber to the rotary shaft portion. A rotating brush that is rotatably supported, and a plurality of rotating brushes that are rotatably supported in the turbine chamber with the rotation axis direction of the connecting pipe substantially parallel to the rotation axis direction and that are radially disposed with respect to the rotation axis. A turbine that has a wing portion and is rotated by a suction airflow to drive the rotary brush to rotate, and the front end of the shaft opening portion of the connecting pipe is disposed at a position substantially overlapping the rotation shaft of the turbine. Aperture A suction opening for an electric vacuum cleaner, characterized in that a blade opening facing the space between the blades is formed on the side wall of the turbine adjacent to the suction inlet. 2. A guide in which the turbine chamber is communicated with a rotating brush chamber at a position facing a lower portion of the turbine, and the turbine chamber is located rearward of a rotation axis of the turbine and the distance from the outer periphery of the turbine gradually increases rearward. The suction port body of the vacuum cleaner according to claim 1, wherein a wall surface is provided from a bottom surface in the turbine chamber to a vicinity of a height of a rotating shaft of the turbine. 3. The turbine chamber communicates with a rotating brush chamber at a position facing a lower portion of the turbine, and a wall surface adjacent to the outer periphery of the turbine behind the turbine and near the height of the rotating shaft of the turbine is formed in the turbine chamber. The suction port body of the electric vacuum cleaner according to claim 1 or 2, wherein the suction port body is hung from the upper surface of the vacuum cleaner.