JP3446932B2 - Vacuum cleaner suction body - Google Patents

Description

Detailed Description of the Invention

[0001]

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 an air turbine for rotationally driving a rotary cleaning body.

[0002]

2. Description of the Related Art Conventionally, as a suction inlet of an electric vacuum cleaner provided with this type of air turbine, for example, Japanese Utility Model Publication No. 1-287.
The configurations described in JP-A No. 61 and JP-A-7-59685 are known.

In the suction port body of the electric vacuum cleaner disclosed in Japanese Utility Model Publication No. 1-28761, the suction port is opened on the front side of the lower surface of the case body, and the rotary brush is rotatably provided facing the suction port. A rotary brush chamber and a fan chamber which is in communication with the rotary brush chamber and accommodates a fan for rotating the rotary brush by being rotated by the suction airflow from the suction port are formed. The fan chamber is opened and closed by a lid. A grounding body is provided at the bottom of the lid to open the leak port and ground to the surface to be cleaned.

During cleaning in which the lower surface of the case body faces the surface to be cleaned, the grounding member of the lid comes into contact with the surface to be cleaned, and the leak port opening to the fan chamber is opened and closed by the lid, and the suction port is opened. The fan in the fan chamber rotates via the rotary brush chamber by the suction air flow from the rotary brush, and the rotary brush rotates by the rotation of the fan to scrape out dust from the surface to be cleaned.
Further, when the lower surface is separated from the surface to be cleaned, the lid body is rotated by its own weight to open the leak port, the suction amount from the suction port is reduced, and the rotation speed of the fan is reduced.

Further, the suction port body of the electric vacuum cleaner disclosed in Japanese Patent Laid-Open No. 7-59685 has a plurality of blades in the suction air passage between the suction port and the hose or the communication pipe connected between the extensions. Then, an air turbine that rotates by the suction airflow is rotatably supported by a rotating shaft, and an endless belt is hung between the end of the rotating shaft and the pulley provided at the end of the rotary cleaning body to rotate the air turbine. The rotating cleaning body is rotating. Further, a bypass air passage is provided in communication with the suction air passage. Further, wheels that are separate from the running wheels are pivotally supported by a movable member that has a valve body that opens and closes the bypass air passage.

When the traveling wheel is placed on the floor surface with the suction port facing the floor surface, the wheel sinks into the case body on the floor surface, the valve body blocks the bypass air passage, and the suction air is sucked. The air turbine is efficiently rotated by the suction airflow from the mouth, and the rotary cleaning body is rotated. Further, when the traveling wheels are lifted from the floor, the wheels project downward and move the movable member to release the bypass air passage by the valve body to cause a leak, thereby lowering the rotation of the air turbine. .

[0007]

However, the above Japanese Utility Model Publication No. 1-28761 and Japanese Unexamined Patent Publication No. 7-59685.
In the suction port body of the conventional electric vacuum cleaner described in the publication, since a member such as a grounding body for opening and closing the leak port is provided on the lower surface of the suction port body, in the state where the lower surface is directed upward, Occasionally, the grounding body or the like was activated to block the leak port. Therefore, it is difficult to safely clean the rotary cleaning body such as removing dust adhering to the suction port or removing dust adhering to the rotary cleaning body. Further, since the suction air passage through which the dust flows and the suction air flow that rotates the air turbine are in the same path, there is a problem that dust adheres to the air turbine and smooth rotation of the air turbine cannot be obtained.

The present invention has been made in view of the above problems, and provides a suction port body of an electric vacuum cleaner which has a simple structure and which surely stops the rotation of the rotary cleaning body when the lower surface is directed upward.

[0009]

A suction port body for an electric vacuum cleaner according to claim 1 has a suction port opened to a lower surface facing the surface to be cleaned and an intake port opened separately from the suction port. A case body; a communication pipe provided in the case body and communicating with the suction port; an intake air passage provided in the case body, one end side of which communicates with the intake port and the other end of which communicates with the communication pipe; or disposed in an intake air passage in said inlet
A turbine chamber that rotatably accommodates an air turbine that is rotated by the suction air flow, a rotary cleaning body that is rotatably disposed facing the lower surface of the case body, and that is rotated by the rotation of the air turbine, and the case body. It is arranged so that it can move up and down.
The turbine chamber is closed by closing the intake air passage to the turbine chamber when the lower surface of the case body is positioned upward.
With a blocker that blocks the supply of intake air to the
When the lower surface of the case body is positioned upward, the obstruction body disposed in the case body moves by its own weight, and one end side is in communication with the intake port, and the other end is in the intake air passage that is in communication with the communication pipe. Block the intake air passage to the turbine chamber
Since the supply of intake air is shut off , the air turbine is reliably stopped and the rotary cleaning body is stopped with a simple configuration in which a movable closing body is provided.

The suction port body of the electric vacuum cleaner according to claim 2 is
The suction port body of the electric vacuum cleaner according to claim 1, wherein the case body includes a bypass air passage for communicating the air inlet with the downstream side of the turbine chamber by closing the intake air passage of the closing body,
Since the bypass air passage that connects the intake port to the downstream side of the turbine chamber is provided by closing the intake air passage of the closing body, the closing body disposed inside the case body when the lower surface of the case body is positioned upward Moves due to its own weight, blocking the intake air passage to the turbine chamber and closing the intake air passage of this block.
Since the intake port communicates with the downstream side of the turbine chamber through the bypass air passage due to the blockage, the intake airflow to the air turbine is reliably blocked with a simple configuration, the air turbine is reliably stopped, and the rotary cleaning body is stopped. To do. Moreover, since there is the intake air from the suction port, it is possible to prevent an increase in the amount of suction air from the suction port, so that the wind noise generated between the edge of the suction port and the rotary cleaning body is also reduced.

The suction port body of the electric vacuum cleaner according to claim 3 comprises:
The suction port body of the electric vacuum cleaner according to claim 2, wherein the suction port body has an endless belt for transmitting the rotation of the air turbine to the rotary cleaning body, and the bypass air passage is arranged on the inner peripheral side of the endless belt, which is blocked. Since the bypass air passage arranged near the air turbine by varying the suction airflow to the air turbine by the body is arranged on the inner peripheral side of the endless belt that transmits the rotation of the air turbine to the rotary cleaning body, The space on the inner peripheral side is efficiently used, and the size can be reduced.

The suction port body of the vacuum cleaner according to claim 4 is
The suction inlet of the vacuum cleaner according to any one of claims 1 to 3, wherein the intake air passage includes a rib having a flat surface along a suction direction downstream of a moving position of the closing body,
Since the rib having a flat surface along the intake direction is provided on the downstream side of the movement position of the closing body in the intake air passage, the lower surface of the case body is positioned upward so that the upper side of the closing body closing the intake air passage. Guides the movement to the intake airflow path with a simple structure without increasing the intake load of the intake airflow, without the obstruction body closing the intake airflow path.

The suction port body of the electric vacuum cleaner according to claim 5 is
The suction port body of the electric vacuum cleaner according to any one of claims 1 to 4, wherein the closing body is spherical, and the spherical closing body is used, so that the lower surface of the case body is positioned upward. The movement of the closing body is smooth with a simple structure, the air turbine is surely stopped, and the rotary cleaning body is stopped.

The suction port body of the electric vacuum cleaner according to claim 6 is:
The suction port body of the electric vacuum cleaner according to any one of claims 1 to 5, wherein the closing body has an outer peripheral surface covered with an elastic member, and the outer peripheral surface is covered with the elastic member. The generation and damage of noise due to collision with the case body during movement is prevented, and the obstruction of the intake air passage is improved.

The suction port body of the electric vacuum cleaner according to claim 7 is:
The suction port body of the electric vacuum cleaner according to any one of claims 1 to 6, wherein the case body has an upper case and a lower case, the upper case projects toward the intake air passage, and protrudes downward at the tip. With a weight holding part that can hold the closing body,
Since the closing body is held at the tip of the weight holding portion that projects downward in the upper case facing the intake air passage, and the upper case and the lower case are joined to form the case body, the closing body is The inner case is easily joined to the upper case and the lower case to improve the assembling manufacturability.

The suction port body of the electric vacuum cleaner according to claim 8 comprises:
The suction port body of the electric vacuum cleaner according to any one of claims 1 to 7, wherein the air turbine is a horizontal turbine, and the horizontal turbine that can obtain a large torque with a small intake airflow is used as the air turbine. Horizontal suction air flow due to vertical movement of the can be easily blocked with a simple structure.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION A structure showing an embodiment of a suction port body of an electric vacuum cleaner of the present invention will be described below with reference to the drawings.

In FIGS. 1 to 6, reference numeral 11 denotes a suction port main body which is elongated in the traveling direction. The suction port main body 11 is a lower main body case 12 made of a synthetic resin such as acrylonitrile-butadiene-styrene (ABS) resin. And an upper body case made of the same material that is fixedly coupled to the upper part of the lower body case 12.
The 13 and the lower body case 12 and the upper body case 13 are joined by sandwiching the bumper 14 along the peripheral surfaces including the front surfaces of the lower body case 12 and the upper body case 13,
A rectangular case body 15 is formed.

A rib 17 is formed on the upper surface of the lower body case 12 so as to be substantially vertical, and a first groove-shaped cleaning member having a laterally long opening in the lower surface is formed on the front side, which is the traveling direction side. The chamber 18 is partitioned and formed on the rear side, which is the backward direction side, similarly, the second cleaning body chamber 19 in the shape of a groove that is horizontally long in the substantially left-right direction and opens to the lower surface is defined. Further, the lower main body case 12 is partitioned by the rib portion 17 from one end side from substantially the center between the first cleaning body chamber 18 and the second cleaning body chamber 19 and has a function as a leak port on the lower surface. A first suction chamber 21 that opens the first suction port 20, a first drive transmission chamber 22 that is partitioned from substantially the center to the other end side, and a second cleaning body chamber that is partitioned at the rear substantially center
A second suction chamber 24 that opens a second suction port 23 that also has a function as a leak port in the upper surface of 19 and communicates with the first suction chamber 21, and the other end side of the first drive transmission chamber 22. And a second drive transmission chamber 25 which is divided into The first
The opening area of the suction port 20 is larger than the opening area of the second suction port 23.

Further, on the lower surface of the lower main body case 12, a concave groove-shaped first member located at one end side of the first cleaning body chamber 18 and communicating the outside of the case body 15 with the first cleaning body chamber 18 is formed. 1 communicating recess
26 are provided. Further, on the lower surface of the lower main body case 12, the case body is located at the rear portion on the one end side of the second cleaning body chamber 19.
The second groove-shaped second that communicates the outside of 15 with the second cleaning body chamber 19
The communication recess 27 is provided. Furthermore, a concave groove-shaped communication air passage that allows the first cleaning body chamber 18 and the first suction port 20 to communicate with each other.
28 are provided.

The lower surface of the second drive transmission chamber 25 is opened downward, and a closing plate 29 is removably attached to this opening by a mounting tool 30.

Further, on one end side of the upper main body case 13,
The second drive transmission chamber 25 communicates with the second drive transmission chamber 25.
A leak window portion 31 is formed so as not to accumulate dust inside.

Further, in the center of the rear part of the case body 15, a communication pipe 32 is pivotally supported by the lower body case 12 and the upper body case 13 so as to face the second suction port 23 and pivot shafts 33, 33. And is rotatably attached at a predetermined angle in the vertical direction. The first suction chamber 21 and the second suction chamber 24 communicate with the communication pipe 32 to form a suction air passage 34. Further, the rear end portion of the communication pipe 32 projects rearward outward from the suction port main body 11, and the front end portion of the bent connecting pipe 35 is rotatably fitted to the rear end portion. The connection pipe 35 is detachably connected to the hose via an extension pipe (not shown) and further connected to an electric vacuum cleaner body (not shown).

The second suction port 23 having an opening area smaller than that of the first suction port 20 is closer to the first suction port 20 than the first suction port 20 because the distance from the communication pipe 32 is shorter than that of the first suction port 20. And the suction force from the second suction port 23 are substantially the same.

On the other hand, at a substantially central portion of the case body 15, a middle case 39 is fixedly attached, which defines a turbine chamber 38 for rotatably accommodating an air turbine 37 serving as a flat driving means therein. As shown in FIG. 7, the inner case 39 has a substantially cylindrical tubular portion 42 into which a substantially columnar shaft body 41 is rotatably fitted. Further, the turbine chamber 38 is defined by the lower surface of the upper main body case 13 at one end of the tubular portion 42, and the turbine chamber 38 and the first suction chamber 21 are partitioned by a substantially disc-shaped first partition. A section 43 is provided. In addition, a plurality of intake / exhaust ports 44 are formed in the first partitioning portion 43 and are formed in a slit shape to communicate the turbine chamber 38 with the first suction chamber 21. Further, the other end of the tubular portion 42 is provided with a substantially plate-shaped second partition portion 45 that partitions the first drive transmission chamber 22 with the rib portion 17 of the lower body case 12.

Further, in the first partition portion 43, an intake air supply air passage 48 which constitutes an air intake air passage 47 which expands like a trumpet in the circumferential direction by the rib portion 17 protruding from the lower surface of the upper body case 13 is formed. A call-in section 49 for partitioning is provided. Then, the intake portion 49 has a hemispherical concave shape that is directed upward, and the intake air supply passage 48
A weight accommodating portion 52 for accommodating a substantially spherical weight body 51 as a closing body is provided so as not to block the. In addition, the calling part
The reference numeral 49 guides the movement at the side edge so that the weight body 51 does not move horizontally when the weight body 51 moves upward from the weight housing portion 52 so as to block the intake air supply air passage 48, and the intake air supply is performed. The air passage 48 is gradually narrowed so that the cross-sectional area is gradually reduced, the air passage 48 is connected to the turbine chamber 38 in a scroll shape, and the suction airflow is supplied to the air turbine 37 in a spiral shape. Further, the upper main body case 13 is restricted from moving toward the inside of the intake air supply passage 48 so that the weight 51 protruding toward the inside of the intake air passage 48 in the shape of a wall having a flat surface is attracted toward the turbine chamber 38. A guide portion 53 that is a rib that guides vertical movement is provided. In addition, the upper body case 13 has an intake air passage.
A weight holding portion 54 is provided which faces the 48 and projects downward in a substantially cylindrical shape to hold the weight body 51 at a tip portion thereof.

The one end of the intake air supply air passage 48, which opens like a trumpet, has an intake port formed over a rear surface which is a substantially vertical surface of the rear portion of the upper body case 13 and an upper surface which is continuous with the rear surface. It is in communication with 55. The intake port 55 is formed by forming a plurality of small-diameter holes, and is formed so as to be located at one side of the communication pipe 32.

Further, the weight accommodating portion 52 is formed with a bypass air passage 56 which communicates with the first suction chamber 21 below the first partition portion 43. The bypass air passage 56 is adapted to be closed when the weight body 51 is located in the weight accommodating portion 52. An elastic member such as rubber is formed on the outer peripheral surface of the weight body 51 so as to hermetically close the bypass air passage 56 when the weight body 51 is located in the weight housing portion 52. In addition,
The weight accommodating portion 52 and the bypass air passage 56 are the first drive transmission chamber.
It is located within 22.

Then, an intake air passage 47 is formed which communicates with the first suction chamber 21 from the intake port 55 through the intake air supply passage 48, the turbine chamber 38 and the intake air outlet 44.

Further, at both ends of the tubular portion of the middle case 39,
A first bearing 58 and a second bearing 59, which are bearings that rotatably support the shaft body 41, are attached.

On the other hand, the air turbine 37 is provided with a substantially cylindrical shaft support portion 62 into which one end of the shaft body 41 is fitted and which is fitted approximately at the center of the curved disc-shaped straightening plate 61 on the curved surface side. Board 61
On the curved surface side, a plurality of curved wind receiving plates 63, 63 are formed in a wall shape so as to project in a horizontal turbine shape.
An air turbine pulley 64 is integrally provided on the other end of the shaft body 41.

In the air turbine 37, the air turbine pulley 64 faces the first drive transmission chamber 22 and is projected from the lower end of the middle case 39, so that both ends of the shaft body 41 have the first bearing.
It is axially supported by the 58 and the second bearing 59 in a substantially vertical direction, and is rotatably supported in the turbine chamber 38.
Further, the middle case 39 is housed and fixed in the case body 15 such that the second bearing 59 is located substantially in the center between the first cleaning body chamber 18 and the second cleaning body chamber 19.

A driven rear wheel chamber 67 is provided on both sides of the communication pipe 32 of the lower main body case 12 and a driven rear wheel 66 is rotatably supported by the driven rear wheel chamber 67, and driven front wheels 68 are rotatably supported on both front end sides. A driven front wheel chamber 69 supported by the shaft is formed.

On the other hand, in the first cleaning body chamber 18 and the second cleaning body chamber 19, the first rotating blade 71 as a rotating cleaning body is provided.
The second rotary blade 72 is rotatably arranged. The second rotary blade 72 has a mandrel 74 which is provided with a spiral groove portion 73 axially clockwise in the peripheral surface of the mandrel 74, for example, made of aluminum alloy.
A plurality of, for example, four blade portions 75, which are flexible, for example, as a cleaning member made of a soft vinyl chloride as a cleaning body, are engaged in the groove portion 73 of the spiral shape in a spiral shape so as to project in a wall shape on the outer peripheral surface. There is. The blade portion 75 is configured such that one side edge in the longitudinal direction of a plate portion 76 having an elongated flat plate shape has a thick pedestal portion 77 that engages with the groove portion 73 of the mandrel 74.

Further, as shown in FIGS. 8 and 9, the first rotary blade 71 has flexibility on the outer peripheral surface and has brushed on one surface.
Cloth blade part that is a floor polishing means as a cleaning body provided with 80
81 and a plurality of double blade portions 82, which are scraping means as a cleaning body having a substantially Y-shaped cross section having flexibility, are alternately provided in a spiral shape, for example, two pieces each. The cloth blade portion 81 is made of, for example, a slender plate-shaped raised cloth 83 having a raised surface 80 made of polyester, and a pedestal portion 77 made of soft vinyl chloride having a thick wall at one side edge in the longitudinal direction. Has been done. Further, the double blade portion 82 is formed in a substantially Y-shaped cross section such that the plate portion 76 is branched from the plate portion 76 of the blade portion 75. The length dimension of the cloth blade portion 81 protruding from the mandrel 74 is longer than the length dimension of the double blade portion 82 protruding from the mandrel 74, and the floor surface 84, which is the surface to be cleaned, is between the plates. Only the part 81 contacts between the plates, and the flooring effect of floor polishing is obtained.

Further, the first rotary blade 71 and the second rotary blade 71
Pulleys 85 are integrally provided on the mandrel 74 at one end of the rotary blade 72. The first rotary blade 71 and the second rotary blade 72 are such that the pulleys 85, 85 are located in the second drive transmission chamber 25 and the shaft portions 86, rotatably provided at both ends in the axial direction, 86 are rotatably supported by being engaged with bearings 87, 87 provided on the case body 15, respectively.

The first rotary blade 71 and the second rotary blade 72 are formed such that the outer diameter of the first rotary blade 71 is smaller than that of the first rotary blade 71, and the lower end of each of the first rotary blade 71 and each of the first cleaning body chambers. 18 and the second cleaning body chamber 19 projecting slightly downward from the openings in the lower surface, and only the tip of the cloth blade portion 81 is formed by the driven front wheels 68, 68 and the driven rear wheels 66, 66. It is provided so as to project further downward.

On the other hand, in the first drive transmission chamber 22, a drive conversion means 90 which is a drive transmission means is arranged. This drive conversion means 90, as shown in FIG. 1, FIG. 2 and FIG.
A box body located on the end side of the first drive transmission chamber 22
A substantially rod-shaped first shaft 92 whose axial direction extends in the vertical direction is rotatably supported in 91. At the lower end of the first shaft 92, there is provided a first pulley 94 on which a first endless belt 93a, which is an endless belt as a drive transmission means, is hung on the air turbine pulley 64 of the air turbine 37. The first bevel gear 95a is provided so as to face the first drive transmission chamber 22 and is provided at the upper end.

Further, in the box 91, a substantially rod-shaped second shaft 96a and a third shaft 96b are provided rotatably vertically in parallel with each other along the lateral direction of the case body 15. The second shaft 96a has a second bevel gear 95b that engages with the first bevel gear 95a of the first shaft 92 at one end.
, A second pulley 97 facing the second drive transmission chamber 25 is provided at the other end, and a first gear 98a is provided at one end side from the intermediate portion. In addition, one end of the third shaft 96b has a second gear 98 that engages with the first gear 98a of the second shaft 96a.
b is provided, and at the other end, a third pulley 99 facing the second drive transmission chamber 25 is provided. The second pulley 96b of the second shaft 96a is attached to the first rotary blade
The second endless belt 93b, which is a drive transmission means, is slanted and wound around the pulley 85 of 71, and the third end of the third shaft 99b of the third shaft 96b is connected to the pulley 85 of the second rotary blade 72. A third endless belt 93c, which is a drive transmission means, is laid around in a substantially horizontal direction.

The center of the second shaft 96a is shown in FIG.
As shown in, the second rotary blade 72 side from the intermediate position between the first rotary blade 71 and the second rotary blade 72,
That is, the distance between the second shaft 96a located above and the first rotary blade 71 that is slanted over the second shaft 96a is increased.
Also, the third shaft 96b is the third shaft 96b.
It is positioned in a substantially horizontal direction with respect to the second rotary blade 72 that is laid substantially horizontally, and the distance between the third shaft 96b and the second rotary blade 72 is shortened.

The rotation of the air turbine 37 causes the first
The first shaft 92 rotates through the endless belt 93a of
By this rotation, the first bevel gear 95a and the second bevel gear 95
The second shaft 96a rotates via b. The rotation of the second shaft 96a causes the first gear 98 to mesh with each other.
At a and the second gear 98b, the third shaft 96b rotates in the opposite direction relative to the second shaft 96a. Then, the first rotating blade via the second endless belt 93b.
71 rotates in the forward direction with respect to the advancing direction of the suction port body 11, and the second rotating blade 72 rotates in the reverse direction with respect to the advancing direction of the suction port body 11, that is, rotates inward relative to each other. There is. The first rotary blade 71 is adapted to rotate toward the raised hair 80 side of the cloth blade portion 81.

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

The first rotary blade 71, the second rotary blade 72, the drive converting means 90 and the air turbine 37 are assembled to the lower body case 12. On the other hand, with the lower surface of the upper body case 13 facing upward, the weight holding portion 54 of the upper body case 13 is
The weight 51 is placed and held at the tip of the. Then, from the upper side to the lower surface side of the upper body case 13, the lower body case 12
Are joined together via a bumper 14 and connected by a screw or the like to form a case body 15 to assemble and form a suction port body 11.

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

At the time of cleaning, the suction port body 11 is connected to the vacuum cleaner body (not shown) via an extension tube and a hose,
The end portion of the hose on the extension pipe side is gripped and pushed to move the suction port body 11 back and forth while contacting the floor surface 84, which is the surface to be cleaned. In this state, the weight body 51 is located in a state of being housed in the weight housing portion 52 by its own weight, and the intake air supply air passage 48 is open, that is, the intake port 55 and the turbine chamber 38 are in communication with each other, The bypass air passage 56 is closed.

Then, by the suction force of the main body of the vacuum cleaner, it is sucked from the suction port 55 and also sucked from the first suction port 20 and the second suction port 23. Where the suction port body
Since 11 is placed on the floor 84, the first suction port
20 is a first rotary blade 71 and a second rotary blade
Since it is located between 72, the first rotary blade 71 and the second rotary blade 72 are sealed with the floor surface 84, and the negative pressure on the lower surface of the suction port body 11 increases. By the way, communication pipe
Second suction port 23 closer to first suction port 20 from 32
Is opened in the second cleaning body chamber 19, the air passage resistance is increased by the second rotating blade 72, and the first suction port is
Since the opening area is smaller than the opening area of 20, the suction force from the first suction port 20 and the suction force from the second suction port 23 are about the same. Therefore, the ratio of the suction amount from the first suction port 20 and the second suction port 23 and the suction amount from the suction port 55 having the same degree is equal to the negative pressure of the lower surface of the suction port body 11 facing the floor surface 84. As a result, the amount of intake air from the intake port 55 increases.

Further, when the floor surface 84 is a carpet such as a carpet having a particularly long hair, the first suction port 20 facing the floor surface 84 is closed. Therefore, the negative pressure on the lower surface of the suction port body 11 when the floor surface 84 is a carpet is larger than the negative pressure on the lower surface of the suction port body 11 when the floor surface 84 is between the plates. The intake quantity from 55 increases further.

Then, the air taken in through the intake port 55 passes through the inlet air supply passage 48 having a trumpet shape whose cross-sectional area is gradually reduced while being rectified, and reaches the turbine chamber 38 in a spiral shape. The air turbine 37 rotates at a speed proportional to the amount of intake air. This rotational drive force is transmitted to the drive conversion means 90 via the first endless belt 93a, and the rotational drive about the vertical direction is converted into two rotational drive force about the horizontal direction by the drive conversion means 90. The first rotary blade 71 and the second rotary blade 72, which are converted and rotate via the second endless belt 93b and the third endless belt 93c, rotate in opposite directions at a speed proportional to the amount of intake air. Then, the rotation of the first rotary blade 71 and the second rotary blade 72 scrapes out dust from the floor surface 84, and the scraped dust located in the first cleaning body chamber 18 communicates with the communication air passage 28. Is sucked from the first suction port 20 through the second cleaning body chamber 19
The dust located inside is sucked as it is from the second suction port 23. Further, the suction airflow that has flowed into the turbine chamber 38 is
The first suction chamber 21 that forms the suction air passage 34 from the intake / exhaust port 44
Through the communication pipe 32.

When the floor surface 84 is between the plates, only the cloth blade portion 81 of the first rotary blade 71 located on the front side in the traveling direction comes into contact with the spaces between the plates, and the dust on the spaces between the plates is swept up to the wall. As well as flooring between the boards to the wall.

By the way, since the intake port 55 has a smaller opening area than the first intake port 20 and the second intake port 23, and the air turbine 37 serving as an air passage resistance is located in the intake air passage 43,
The suction force from the first suction port 20 and the second suction port 23 decreases, and the suction force from the first suction port 20 and the second suction port 23 decreases. And the first
The rotary drive of the rotary blade 71 and the second rotary blade 72 causes the dust to be scraped off, which makes it easier to inhale,
There is almost no leftover due to a decrease in suction force.

Here, the movement of furniture or the like and the first suction port
When a large object is sucked into the 20 and the second suction port 23 to be blocked, and when the first rotary blade 63 and the second rotary blade 64 are entangled with thread dust or hair, these are removed. As shown in, the suction port body 11
Is lifted from the floor surface 84 and the lower surface of the suction port main body 11 is directed upward, the weight body 51 is guided by the intake portion 49 and the guide portion 53 so that the weight body 51 rolls up from the weight accommodating portion 52 by its own weight. Moving, that is, the upper main body case 13 located below
Move to the side.

Intake air passage opened by the movement of the weight 51
The weight body 51 is located in the intake air supply air passage 48 forming the 47 to close the intake air supply air passage 48 and open the bypass air passage 56. Then, the turbine chamber is closed by blocking the intake air supply passage 48.
The supply of intake air to the 38 is cut off, and the intake air from the intake port 55 is taken into the first intake chamber 21 via the bypass air passage 56, so that the intake air flow does not flow to the air turbine 37, and When the turbine 37 stops rotating, the first rotating blade 71
And the rotation of the second rotary blade 72 is stopped.

When removing the first rotary blade 71 and the second rotary blade 72 in order to remove thread dust, hair, and the like entwined with the first rotary blade 71 and the second rotary blade 72, Remove the wearing tool 30 and close the obstruction plate 29
By removing the shaft portion 86 on the side where the pulley 85 is not provided as a fulcrum, and moving the pulley 85 side downward to remove the shaft portion 86 on the pulley 85 side from the bearing 87, and the second endless belt 93b and the third endless belt 93b. It can be removed by removing the pulley 85 from the endless belt 93c and removing the shaft portion 86 serving as a fulcrum from the bearing 87. The reverse operation is carried out when assembling.

According to the above-described embodiment, when the lower surface of the case body 15 is positioned upward, the weight body 51 disposed inside the case body 15 moves by its own weight, and Since the intake air supply air passage 48 is closed, the movable weight body 51 is provided so that the intake air to the turbine chamber 38 that rotatably accommodates the air turbine 37 is blocked, and the air turbine 37 is reliably stopped. Thus, the first rotary blade 71 and the second rotary blade 72 can be stopped.

Further, since the bypass air passage 56 that connects the intake port 55 to the downstream side of the turbine chamber 38 by the upward movement of the weight body 51 with respect to the case body 15 is provided, the lower surface of the case body is positioned upward. At this time, the weight body 51 arranged in the case body 15 moves by its own weight, and the intake port 55 is bypassed by the bypass air passage 56.
Since it is communicated with the downstream side of the turbine chamber 38 via the, the intake airflow to the air turbine 37 can be reliably cut off with a simple configuration and the air turbine 37 can be reliably stopped and the first rotating blade 71
And the second rotating blade 72 can be stopped. Moreover, since there is intake air from the first suction port 20 and the second suction port 23, it is possible to prevent an increase in the amount of suction air from the first suction port 20 and the second suction port 23. The edges of the mouth 20 and the second suction port 23 and the first rotating blade 71 and the second
The wind noise generated between the rotating blade 72 and the rotating blade 72 is also reduced.

Furthermore, the inner circumference of the first endless belt 93a for transmitting the rotation of the air turbine 37 to the first rotary blade 71 and the second rotary blade 72 through the bypass air passage 56 provided in the vicinity of the air turbine 37. Since it is disposed on the side, the space on the inner peripheral side of the first endless belt 93a can be efficiently used, and the suction port main body 11 can be downsized.

Further, the upper body case 13 is provided with an intake air supply passage 48.
A guide portion 53 that protrudes inward in the shape of a wall having a flat surface along the intake direction, restricts the movement of the weight body 51 so as to be attracted toward the turbine chamber 38, and guides the vertical movement of the weight body 51.
The weight 51 is sucked into the narrowed portion of the intake air supply passage 48 of the intake air passage 47, which is the base end side of the intake portion 49, with a simple structure without increasing the intake load of the intake air flow. It is possible to prevent the blockage.

Since the spherical weight body 51 is used, the weight body can be smoothly moved with a simple structure, and the reliable air turbine 37 can be provided.
The stop of the first rotary blade 71 and the second rotary blade 72 due to the stop is smooth and reliable.

Further, since the outer peripheral surface of the weight body 51 is covered with the elastic member, it is possible to prevent the weight body 51 from colliding with the case body 15 to generate noise and damage the case body 15. When the weight body 51 is located inside the weight accommodating portion 52, the bypass air passage 56 provided in the weight accommodating portion 52 can be airtightly closed, and the intake air leaks into the first suction chamber 21 through the bypass air passage 56. Without doing so, the air turbine 37 can be efficiently rotated, the rotations of the first rotary blade 71 and the second rotary blade 72 are increased, and the cleanability can be improved.

Further, the upper main body case 13 constituting the case body 15 is provided with a weight holding portion 54 which faces the intake air supply air passage 48 and projects downward in a substantially cylindrical shape to hold the weight body 51 at the tip. Therefore, when assembling the case body 15 by accommodating the weight body 51 inside the upper body case 13 and the lower body case 12 and assembling the weight body 51, the weight body 51 is placed and held at the tip of the weight holding portion 54. Since the lower main body case 12 is joined to the lower main body case 12, the lower main body case 12 and the upper main body case 13 can be easily joined, and the assembling manufacturability can be improved.

Further, since the air turbine 37 is a horizontal turbine of a flat scroll type capable of obtaining a large torque, the horizontal suction airflow for efficiently rotating the air turbine can be easily achieved by simply moving the weight 51 up and down. Can be shut off.

Further, the shaft body 41 of the air turbine 37 is axially positioned between the first cleaning body chamber 18 and the second cleaning body chamber 19 in the vertical direction, and the shaft body 41 is pivotally supported. Since the second bearing 59 is disposed between the first cleaning body chamber 18 and the second cleaning body chamber 19 below the upper ends of the first rotary blade 71 and the second rotary blade 72, Turbine 37
Are located in a state of overlapping on the first cleaning body chamber 18 and the second cleaning body chamber 19, so a plurality of, for example, two first rotating blades 71 and second rotating blades 72 are provided to improve the cleaning performance. Although a large torque required to drive the engine is obtained, a space in the front and rear in the traveling direction for arranging the air turbine 37, and an upper and lower space for arranging the second bearing 59, which is a bearing, are provided. The space in the direction can be reduced, and the size can be reduced.

Furthermore, the first suction chamber 20 is opened by displacing the first suction port 20 from substantially the center to one end side, and the first suction chamber 21 communicating adjacent to the second suction chamber 24 facing the communication pipe 32 is formed. A middle case 39, which is formed above and houses the air turbine 37, is formed in the case body 15.
Since it is arranged substantially in the center, the intake air passage 34 from the first intake port 20 and the intake air passage 43 from the intake port 55 through the turbine chamber 38 are not located vertically, so that the vertical dimension can be further reduced. , Further miniaturization can be achieved.

Further, the first cleaning body chamber 18 and the first suction port 20
Since the and are communicated with each other through the concave groove-shaped communication air passage 28, the first suction port 20 and the communication air passage 28 are closed due to the type of the floor surface 84 that is the surface to be cleaned, such as a board space, a tatami mat, or a carpet. Are different, the negative pressure is different, and the ratio between the suction amount from the first suction port 20 and the second suction port 23 and the suction amount from the suction port 55 is variable. For this reason, in the case of the space between the plates, the suction amount from the intake port 55 is reduced, and the first rotary blade 63 and the second rotary blade 63
The rotation of the rotary blade 64 of the first rotary blade 64 decreases, and in the case of a carpet, the suction amount from the intake port 55 increases and the rotations of the first rotary blade 63 and the second rotary blade 64 increase. No means required, simple structure for the first floor 84
The rotations of the rotary blade 63 and the second rotary blade 64 can be varied, and the cleaning workability and cleaning efficiency can be further improved.

Since the communication air passage 28 has a concave groove shape,
Dust can be prevented from being caught or the like, and maintenance management such as removal of dust can be facilitated as compared with the case where a tubular object is formed in a tubular shape.

Furthermore, since the first communicating recess 26 and the second communicating recess 27 in the form of concave grooves communicating with the first cleaning body chamber 18 and the second cleaning body chamber 19 are provided, dust near the wall is also efficiently formed. As well as the communication air passage 28, dust is not caught and maintenance such as removal of dust can be facilitated as compared with the case where the tubular member is formed in a tubular shape like the communication air passage 28. The communication air passage 28, the first communication recess 26 and the second communication recess 27 are
A structure in which a tubular object communicates may be used.

On the other hand, the same number of dusts as the cloth blade portion 81, which is a floor polishing means having a floor polishing effect on the first rotary blade 71 located on the front side in the traveling direction, and the blade portion 75 of the second rotary blade 72. Since the double blade portion 82 serving as a scraping means is provided so as to form the plate portion 76 having a scraping effect, the first suction port 20 communicating with the first cleaning body chamber 18 located on the front side in the traveling direction. Has a longer distance from the communication pipe 32 than the second suction port 23 communicating with the second cleaning body chamber 19 located on the rear side, and the suction force is relatively weakened due to air passage resistance or the like, but The first rotary blade 71 in the first cleaning body chamber 18 is equally scraped out by the plate portions 76 of the double blade portion 82 in the same number as the second rotary blades 72 in the rear second cleaning body chamber 19. At the same time, the cloth blade portion 81 scratches out the dust, which relatively increases the dust scratching ability, which results in the first suction. Cleaning ability of the mouth 20 and the second suction port 23 is substantially the same level, it can be easily improved cleaning properties.

Furthermore, a flooring effect can be obtained up to the wall side, dust can be scraped out up to the wall side, and regardless of the type of the floor surface 84, it can be cleaned up to the wall edge without switching separately according to the state of the floor surface 84.

Since the outer diameter of the first rotary blade 71 located on the front side is smaller than the outer diameter of the second rotary blade 72, the first rotary blade 71 is arranged up to the foremost part in the case body 15. Can be installed and the floor surface of the first rotating blade 71
The distance between the position where it comes into contact with 84 and the edge of the wall can be shortened, and moreover the edge of the wall can be cleaned.

Moreover, since the outer diameter of the first rotary blade 71 is smaller than the outer diameter of the second rotary blade 72, the load from the floor surface 84 of the first rotary blade 71 is reduced.
When the suction port body 11 moves forward, the suction port body 11 is inserted through the communication pipe 32.
Even if the rear side is strongly pressed against the floor surface 84, the driving force is transmitted to the second rotary blade 72 on the rear side, so that the cleaning can be reliably performed by the second rotary blade 72.

Further, the second shaft 96a is slanted around the first rotary blade 71 and the second endless belt 93b is slid over the second endless belt 93b.
The second rotary blade 72 is disposed at a position where the distance between the first rotary blade 71 and the second rotary blade 72 is longer than the intermediate position between the first rotary blade 71 and the second rotary blade 72, and the second rotary blade 72 is provided with the third endless belt 93c. The third shaft 96b, which is stretched in a substantially horizontal direction,
Since the first rotary blade 71 and the second rotary blade 72 are arranged at a position where the distance on the second rotary blade 72 side is shorter than the intermediate position between the first rotary blade 71 and the second rotary blade 72,
The first rotary blade 71 and the second rotary blade 72 come into contact with the lower opening edges of the first cleaning body chamber 18 and the second cleaning body chamber 19 due to the rotation when the rotary blade 72 of FIG. This can be prevented, and the first rotary blade 71 and the second rotary blade 72 can be easily attached and detached.

Further, the drive transmission means for transmitting the drive of the air turbine 37 to the first rotary blade 71 and the second rotary blade 72, that is, the first endless belt 93a and the drive conversion means 90, is set in the first cleaning body chamber. 18 and the second cleaning body room
Since it is located between the 19 and on the side opposite to the suction air passage 34 and isolated, the vertical dimension can be reduced and further downsizing can be achieved, and the drive conversion means 90 can be isolated from the suction air passage 34. Through the second endless belt 93b and the third endless belt 93
The first rotating blade 71 and the second rotating blade at c
In order to transmit the drive to the end portion of 72, the first endless belt 93a which is the drive transmitting means, the drive converting means 90, the second endless belt 93b and the third endless belt 93 by the sucked dust.
c is not polluted and maintenance is easy.

In addition, the scroll deflection type air turbine 37
An intake air supply air passage 48 for supplying a suction air flow in a spiral manner is located on the opposite side of the intake air passage 34 from the first suction port 20 communicating with the first cleaning body chamber 18 located on the front side in the traveling direction. Since the suction air passage 34 and the intake air supply air passage 48 do not overlap with each other, the size can be further reduced.

Since the intake port 55 of the intake air supply air passage 48 is formed in the rear portion on the side where the communication pipe 32 is led out,
While cleaning, the intake 55 is not blocked by walls, furniture, curtains, etc., and the air turbine 37 can be efficiently rotated,
By effectively utilizing the space for axially supporting the communication pipe 32, the spiral suction airflow can be easily rectified and supplied to the turbine chamber 38, and the drive torque of the air turbine 37 can be further improved and downsized easily.

Further, since the intake port 55 is formed at a position which is substantially vertical to the case body 15, it is possible to prevent the intake port 55 from being closed due to the accumulation of fine dust in the air on the intake port body 11. Reduction of intake efficiency can be suppressed, and the air turbine 37 can be efficiently rotated.

Further, the air turbine 37 in the turbine chamber 38 is introduced from the intake port 55 which is not blocked by walls, furniture, curtains or the like.
To supply the suction air flow to the
48 is opened to the front side of the turbine chamber 38 and formed into a trumpet shape having an interference function so as to be gradually narrowed from the intake port 55 to communicate with each other, so that the portion gradually reaching the turbine chamber 38 with a simple structure is gradually opened. The intake air supply air passage 48 having a smaller area rectifies the intake airflow, and the wind noise of the air turbine 37 can be reduced, thereby reducing noise.

In the above embodiment, not only the canister type vacuum cleaner but also the upright type in which the suction port body 11 is directly formed on the lower surface of the vacuum cleaner body,
It can also be applied to a self-propelled vacuum cleaner in which the vacuum cleaner main body and the suction port main body 11 are integrated.

Further, the opening degree is continuously adjusted in the middle of the intake air passage 47, and the first rotary blade 71 and the second rotary blade 71 are adjusted.
It is also possible to separately provide a valve body, a shutter, etc. so that the rotation speed of 72 can be changed.

On the other hand, as the rotary cleaning body, in addition to the first rotary blade 71 and the second rotary blade 72, any of rotary brushes having wall-shaped brushed brushes and those having only a cloth blade portion may be used. You may use the thing.

Although two rotary cleaning members are provided in the above description, the same effect can be obtained by providing one or more rotary cleaning members.

Next, another embodiment will be described with reference to FIG.

The embodiment shown in FIG. 11 is the same as that shown in FIG.
In addition, the weight accommodating portion 52 of the embodiment shown in FIG. 10 is provided with a downwardly arcuate concave weight dropping portion 101 into which the weight body 51 falls.

That is, a weight drop-in portion 101 into which the weight body 51 is dropped is provided on the side surface of the hemispherical concave weight accommodating portion 52 of the middle case 39 facing the bypass air passage 56. Then, the lower surface of the suction port body 11 is placed on the floor surface 84 so as to face the floor surface 84, and the first suction port 20
Is close to the floor surface 84, and when the negative pressure in the first suction chamber 21 increases, the weight 51 is lifted from the weight drop-in portion 101 so as to be attracted to the bypass air passage 56 by the negative pressure, and the bypass air passage 56 To block. In addition, the suction port body 11 is lifted from the floor surface 84 to
When the negative pressure in the suction chamber 21 decreases, the weight body 51 falls into the weight drop-in portion 101 by its own weight to open the bypass air passage 56.

At the time of cleaning, the suction port body 11 is lifted from the floor surface for the purpose of moving furniture, cleaning the lower surface of the suction port body 11, removing blocked dust, etc., and the lower surface is separated from the floor surface 84. It will be in a state like. In this state, the suction properties from the first suction port 20 and the second suction port 23, which have a large opening area and small airflow resistance, are easier to suck than the intake air from the suction port 55, so that the first suction port 20 and the first suction port 20 The negative pressure of the second suction port 23, that is, the negative pressure in the first suction chamber 21 is also reduced to a negative pressure close to the atmospheric pressure. Therefore, the first suction port 20 and the second suction port 20
The ratio of the suction amount from the suction port 23 to the suction amount from the suction port 55 is such that the suction amount from the first suction port 20 and the second suction port 23 increases and the suction amount from the suction port 55 increases. It is the rate of reduction.

As a result, the first suction port 20 is located on the floor surface 84.
The negative pressure of the first suction chamber 21 increases in the vicinity of, and the weight 51 that has lifted from the weight drop-in portion 101 and blocked the bypass air passage 56 is attracted to the bypass air passage 56 by this negative pressure. ,
Due to the decrease in the negative pressure of the first suction chamber 21, the weight drop portion 10 is caused by its own weight.
It falls to 1 and the bypass air passage 56 opens. Further, although the intake air passage 48 is also open, the air turbine 37 provides a larger air passage resistance from the intake air passage 48 to the first suction chamber 21 via the turbine chamber 38 accommodating the air turbine. As a result, the suction airflow hardly flows into the turbine chamber 38 and almost flows into the first suction chamber 21 via the bypass air passage 56, and the rotation speed of the air turbine 37 is greatly reduced or stopped. First rotating blade 71 and second
The rotation speed of the rotating blade 72 is also greatly reduced or stopped.

Therefore, the rotation speeds of the first rotary blade 71 and the second rotary blade 72 are greatly reduced or stopped even by simply lifting the suction port body 11 with a simple structure.

Next, another embodiment will be described with reference to FIGS.
This will be described with reference to FIG.

In the embodiment shown in FIGS. 12 and 13, a substantially cylindrical weight body 111 is used in place of the spherical weight body 51 as the closing body of the embodiment shown in FIGS. It was what I had.

That is, like the spherical weight body 51 of the embodiment shown in FIGS. 1 to 10, a hemispherical spherical closing portion 11 capable of closing the bypass air passage 56 in the weight holding portion 52 at one end thereof.
2, the weight body 111 is formed in a substantially columnar shape having a flat plane closing portion 113 that can be brought into close contact with the upper body case 13 at the other end.

In the normal state, as shown in FIG. 12, the weight body 111 has a spherical closing portion inside the weight accommodating portion 52 due to its own weight.
112 is accommodated, the intake air supply air passage 48 is open, that is, the intake air 55 is in communication with the turbine chamber 38, and the bypass air passage 56 is closed by the spherical blocking portion 112 and the side surface. Has become.

When the suction port main body 11 is lifted from the floor surface 84 and the lower surface of the suction port main body 11 is directed upward as shown in FIG. 13 for dust removal, the weight 111 is self-weighted. Thus, it moves upward while being guided by the inviting portion 49 and the guide portion 53 so as to slide from the weight accommodating portion 52, that is, moves toward the lower main body case 13 side.

By this movement of the weight body 111, the weight body 111 is positioned in the intake air supply air passage 48 forming the open intake air passage 47, and the air intake supply air passage 48 is closed by the plane blocking portion 113 and the side surface. At the same time, the bypass air passage 56 is opened. Since the intake air supply 48 is blocked, the supply of intake air to the turbine chamber 38 is blocked, and the intake air from the intake port 55 is taken into the first suction chamber 21 via the bypass air passage 56. The suction airflow does not flow to the air turbine 37, the rotation of the air turbine 37 is stopped, and the rotations of the first rotating blade 71 and the second rotating blade 72 are stopped.

As described above, according to the configurations shown in FIGS. 12 and 13, since the weight body 111 is formed in a substantially columnar shape, the bypass air passage 56 is normally closed and the suction port body 11 is sucked when it is turned over. Since the supply air passage 48 is blocked by the wide surface of the weight 111, it can be hermetically closed without leakage, improving the cleaning efficiency and improving the rotation stopping performance of the first rotary blade 71 and the second rotary blade 72. it can.

Although the one end side is formed in a hemispherical shape, it may be formed in a columnar shape having flat flat closed portions 113 at both ends depending on the opening condition of the bypass air passage 56.

[0095]

According to the suction port body of the electric vacuum cleaner of claim 1, when the lower surface of the case body is positioned upward, the obstruction body disposed in the case body moves by its own weight. The intake air passage to the turbine chamber, which rotatably accommodates the air turbine that rotates by the suction airflow from the intake port and rotates the rotary cleaning body, is closed to supply the intake air to the turbine chamber.
Since the supply is cut off , the air turbine can be reliably stopped and the rotary cleaning body can be stopped with a simple configuration provided with a movable closing body.

According to the suction port body of the electric vacuum cleaner of the second aspect, in addition to the effect of the suction port body of the electric vacuum cleaner of the first aspect, the bypass air passage whose intake port communicates with the downstream side of the turbine chamber. the provided, when the lower surface of the case body is positioned upward, closure which is arranged on the case body is moved by its own weight, as well as closes the intake air passage to the turbine chamber, an intake of the closure Since the intake port is connected to the downstream side of the turbine chamber through the bypass air passage due to the blockage of the air passage, the intake airflow to the air turbine can be reliably shut off with a simple configuration and the air turbine can be stopped reliably. Can be stopped.

According to the suction port body of the electric vacuum cleaner of the third aspect, in addition to the effect of the suction port body of the electric vacuum cleaner of the second aspect, the suction air flow to the air turbine can be varied by the closing body. Since the bypass air passage arranged near the turbine is arranged on the inner peripheral side of the endless belt that transmits the rotation of the air turbine to the rotary cleaning body, the space on the inner peripheral side of the endless belt can be efficiently used and downsized. it can.

According to the suction port body of the vacuum cleaner of claim 4, in addition to the effect of the suction port body of the vacuum cleaner of any one of claims 1 to 3, the moving position of the closing body in the intake air passage Since a rib having a flat surface along the intake direction is provided on the further downstream side, the upward movement of the closing body that closes the intake air passage by positioning the lower surface of the case body upwards With a simple structure of the ribs that are provided to project without increasing the load, the obstruction body can be guided to the intake air passage without being obstructed.

According to the suction port body of the vacuum cleaner of claim 5, in addition to the effect of the suction port body of the vacuum cleaner of any one of claims 1 to 4, since the spherical closing member is used, the case When the lower surface of the body is positioned upward, the obstruction body can be moved smoothly with a simple configuration, the air turbine can be reliably stopped, and the rotary cleaning body can be stopped.

According to the suction port body of the vacuum cleaner of claim 6, in addition to the effect of the suction port body of the vacuum cleaner of any one of claims 1 to 5, the outer peripheral surface is covered with an elastic member. Since the closing body is used, it is possible to prevent noise and damage to the case body due to collision with the case body during movement of the closing body, and improve the closing property of the intake air passage.

According to the suction port body of the electric vacuum cleaner of the seventh aspect, in addition to the effect of the suction port body of the electric vacuum cleaner of any one of the first to sixth aspects, the upper case faces the intake air passage. Since the closing body is held at the tip of the weight holding portion protruding downward and the upper case and the lower case are joined to form the case body, the closing body is positioned inside and the upper case and the lower case are joined together. The case and the case can be easily joined, and the assembling manufacturability can be improved.

According to the suction port body of the vacuum cleaner of claim 8, in addition to the effect of the suction port body of the vacuum cleaner of any one of claims 1 to 7, as an air turbine, a large torque with a small suction air flow. Therefore, the horizontal suction airflow due to the vertical movement of the closing body can be easily blocked with a simple configuration, the air turbine can be reliably stopped, and the rotary cleaning body can be stopped.

[Brief description of drawings]

FIG. 1 is a front sectional view showing an embodiment of a suction port body of an electric vacuum cleaner according to the present invention.

FIG. 2 is a plan view in which a part of the same is cut away.

FIG. 3 is a side sectional view of the same.

FIG. 4 is a bottom view of the same.

FIG. 5 is a rear view of the same.

FIG. 6 is a side sectional view showing a relationship between the drive converting means, the first rotary blade and the second rotary blade of the above.

FIG. 7 is a perspective view showing the middle case of the above.

FIG. 8 is a perspective view showing a first rotating blade of the above.

FIG. 9 is a sectional view of the same.

FIG. 10 is an explanatory view showing a state in which the lower surface of the suction inlet main body is positioned so as to face upward.

FIG. 11 is a front sectional view showing a suction port body according to another embodiment of the present invention.

FIG. 12 is a front sectional view showing a suction port body according to another embodiment of the present invention.

FIG. 13 is an explanatory view showing a state in which the lower surface of the suction inlet main body is positioned so as to face upward.

[Explanation of symbols]

11 Suction port body 12 Lower body case, which is the lower case 13 Upper body case, which is the upper case 15 case body 20 First suction port, which is the suction port 32 communication pipe 37 Air turbine 38 Turbine room 47 Intake air passage 51,111 Weight as occluder 53 Guides that are ribs 54 Weight holding part 55 Inlet 56 Bypass Airway 71 1st rotating blade as rotating cleaning body 72 Second rotating blade as rotating cleaning body 84 Floor surface to be cleaned 93a The first endless belt which is an endless belt

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) A47L 9/04

Claims (8)

(57) [Claims] 1. A case body having a suction port opening on a lower surface facing a surface to be cleaned and an intake port opening separately from the suction port, and a communication pipe provided on the case body and communicating with the suction port. When an intake air passage of the other end with the casing is provided in the body one end communicating with the intake port communicates with said communicating pipe, air which is rotated by the suction air flow from the air inlet provided in the intake air passage a turbine chamber for rotatably accommodating a turbine, a rotary cleaning body to be rotated by rotatably rotation arranged by said air turbine to face the lower surface of the case body, said to be vertically movable disposed in the case body Under the case
When the surface is located upward, the intake air passage to the turbine chamber is closed to supply the intake air to the turbine chamber.
Suction port body of the electric vacuum cleaner, characterized by comprising a closure for blocking. 2. The case body is provided with a bypass air passage that connects the intake port to the downstream side of the turbine chamber by closing the intake air passage of the closing body. Vacuum cleaner suction body. 3. The electric vacuum cleaner according to claim 2, further comprising an endless belt for transmitting the rotation of the air turbine to the rotary cleaning body, and a bypass air passage is arranged on an inner peripheral side of the endless belt. Suction body. 4. The vacuum cleaner according to claim 1, wherein the intake air passage is provided with a rib having a flat surface along the intake direction downstream of the movement position of the closing body. Suction mouth body. 5. The suction port body for an electric vacuum cleaner according to claim 1, wherein the closing body is spherical. 6. The suction port body of the electric vacuum cleaner according to claim 1, wherein an outer peripheral surface of the closing body is covered with an elastic member. 7. The case body has an upper case and a lower case, and the upper case is provided with a weight holding portion projecting downward facing the intake air passage and capable of holding a closing body at a tip portion. The suction port body of the vacuum cleaner according to any one of claims 1 to 6. 8. The suction port body of the electric vacuum cleaner according to claim 1, wherein the air turbine is a horizontal turbine.