JPH09248260A - Suction port body for vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction port body with simple structure to efficiently rotate an air turbine to improve the cleaning efficiency. SOLUTION: A communication tube 32 equipped in a lower face of a central rear part of a case body 15 to communicate with a first suction port 20 and a second suction part is guided out rearward and pivotal supported. An inner case 39 equipped with a turbine room 38 to pivotally and rotatably support a flat shaped air turbine 37 is stored almost at the center in the case body 15. A trumpet shaped suction or supply path 43a with an interference function to gradually reduce the cross section area from am air suction opening 44 opening at one side if a communication tube 32 at the rear part of the case body 15 to the front side of the turbine room 38 is formed to communicate. Upon cleaning, rotary blades 63 and +4 are rotated by rotating the air turbine 37 by a vortex suction air flow rectified through a suction opening 44 by a suction air supply pat 43a preventing noises. Dusts are swept out from the floor face and are sucked from the suction part 20 through a suction air path 34 to perform cleaning.

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 port body of an electric vacuum cleaner provided with this type of air turbine, for example, US Pat.
The configuration described in Japanese Patent No. 816 is known.

The suction port body of the electric vacuum cleaner disclosed in US Pat. No. 2,904,816 is connected to a suction chamber having a rotary cleaning body rotatably accommodated therein and having a suction port opened at the lower surface thereof, and a hose or an extension pipe. A suction air passage is provided between the communication pipe and the intake pipe that projects upward and rotatably accommodates a flat air turbine. An intake air passage that rotates an air turbine that rotates a cleaning body is provided, and a valve body is provided at a confluence portion of the intake air passage and the intake air passage. The intake volume is adjusted.

[0004]

However, in the suction port body of the conventional electric vacuum cleaner described in the above-mentioned US Pat. No. 2,904,816, a plurality of intake ports are formed in the peripheral surface of the turbine chamber, so that the cleaning is performed at the time of cleaning. In addition, there is a problem that a curtain or the like blocks the intake port and a sufficient intake airflow cannot be obtained, so that the air turbine cannot be efficiently rotated.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a suction port body of an electric vacuum cleaner having a simple structure for efficiently rotating an air turbine to improve cleaning efficiency.

[0006]

A suction port body for an electric vacuum cleaner according to claim 1, wherein a suction port is opened on a lower surface facing the surface to be cleaned, and the suction port is opened separately from the suction port. A body, a communication pipe provided in the case body, which communicates with the suction port and communicates with the intake port through an intake air passage, and is led out in a direction in which the intake port opens, and faces a lower surface in the case body. And a rotary cleaning body rotatably disposed therein, and an air turbine provided in the intake air passage for rotating and driving the rotary cleaning body by a suction air flow so as to rotatably support the suction turbine to supply the suction air flow. When cleaning, an air turbine rotatably provided in the turbine chamber provided in the intake air passage is opened at the time of cleaning, for example, in a direction in which a communication pipe connected to a hose is led out. Sucks from It rotates by the flow, the rotating cleaning body rotates, scrapes out dust from the surface to be cleaned, sucks dust from the suction port through the suction air passage for cleaning, so the intake port is not blocked by walls, furniture, curtains, etc. As a result, the suction airflow is reliably obtained, the rotary cleaning body rotates efficiently, and the cleaning efficiency is improved.

According to a second aspect of the present invention, the suction body of the vacuum cleaner comprises:
The suction port body of the electric vacuum cleaner according to claim 1, wherein the communication pipe is provided so as to be rotatable in a vertical direction, and the intake air passage is provided from an intake port opening to a rear portion of the case body in a traveling direction to a front of the turbine chamber. With an intake air passage having an interference function that communicates with the section, and since an intake air passage having an interference function that communicates from the intake port to the front part of the turbine chamber is provided, the intake port is connected to the air turbine. The dead space where the air turbine interferes and is not provided in the vicinity of the communication pipe that is rotatably provided in the vertical direction of the case body while supplying and rectifying and muffling it with a simple structure by interfering with the suction air flow Therefore, the dead space can be effectively used to provide the intake air supply air passage, and the size can be reduced.

[0008]

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 FIG. 1 to FIG. 6, reference numeral 11 denotes a suction port main body which is horizontally long in the traveling direction. The suction port main body 11 includes a lower main body case 12 made of a synthetic resin such as acrylonitrile-butadiene-styrene resin, and An upper body case 13 of the same material, which is joined and fixed to the upper part of the lower body case 12, is joined by sandwiching a bumper 14 along the peripheral surface including the front surfaces of the lower body case 12 and the upper body case 13, and is joined. A case body 15 having a shape is formed.

The lower body case 12 has a rib portion 17 formed substantially vertically on the upper surface, and a first cleaning body in the form of a concave groove which is horizontally elongated in the left-right direction on the front side which is the advancing direction side and opens on the lower surface. A chamber 18 is defined and a second cleaning body chamber 19 having a concave groove shape is also formed in the rear side, which is a retreating direction side, and is similarly horizontally long in the left-right direction and opened to the lower surface. Further, the lower body case 12 is partitioned by the rib portion 17 from the substantially central portion between the first cleaning body chamber 18 and the second cleaning body chamber 19 to one end side, and has a function as a leak port on the lower surface. A first suction chamber 21 opening the first suction port 20, a first drive transmission chamber 22 partitioned from substantially the center to the other end, and a second cleaning body chamber partitioned substantially at the rear rear center
A second suction port 23, which also functions as a leak port, is opened at substantially the center of the upper surface of 19, and a second suction chamber 24 communicating 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 that is sectioned. The first
The opening area of the suction port 20 is formed larger than the opening area of the second suction port 23.

Further, on the lower surface of the lower main body case 12, there is a concave portion located on the end side opposite to the first suction port 20 and communicating with the first cleaning body chamber 18 and the second cleaning body chamber 19. A groove-shaped communication recess 27 is provided, and a groove-shaped communication air passage 28 that connects the first cleaning body chamber 18 and the first suction port 20 is provided.

The lower surface of the second drive transmission chamber 25 is opened downward, and a closing plate 29 is removably mounted on the opening by a mounting device 30.

In the center of the rear part of the case body 15, a communication pipe 32 is supported by the lower main body case 12 and the upper main body case 13 with the rotating shafts 33, 33 facing the second suction port 23. To be rotatable at a predetermined vertical angle. 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 the opening area of the first suction port 20 has a smaller distance from the communication pipe 32 than 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 a flat air turbine 37 as a driving means therein. The middle case 39 includes a substantially funnel-shaped lower case 40 having a large diameter at the upper part and a small diameter at the lower part, and an upper case 41 for closing the upper part of the lower case 40.

In the middle case 39, an intake air supply passage 43a is formed in the outer peripheral surface along the circumferential direction, one end of which expands in a trumpet shape in the circumferential direction and the other end opens to the turbine chamber 38. The intake supply air passage 43a is formed in a scroll-like manner so as to communicate with the turbine chamber 38 so as to gradually narrow the cross-sectional area and gradually reduce the cross-sectional area, so as to supply the air flow to the air turbine 37 in a spiral manner. And this intake supply air passage 43a
Has a trumpet shape, it has an interference function, and the suction airflow interferes, that is, is rectified and silenced.

The intake air supply passage 43 leading to the turbine chamber 38
The upper main body case 13 constitutes the upper surface of part of a, that is, the upper surface of the intake air supply passage 43a in the portion located on the front side of the case body 15. One end of the intake supply air passage 43a which opens in a trumpet shape is connected to an intake port 44 formed over a rear surface that is a substantially vertical rear surface of the upper body case 13 and an upper surface that is continuous with the rear surface. They are communicated facing each other. The intake port 44 is formed by forming a plurality of small-diameter holes, and is formed to be open at one side of the communication pipe 32.

Further, a communication hole 45 is formed on the surface of the middle case 39 facing the second suction chamber 24, and the communication hole 45 is formed from the intake port 44 through the intake air supply passage 43a, the turbine chamber 38 and the communication hole 45. Two
An intake air passage 43 communicating with the suction chamber 24 is formed. Also,
Since the communication hole 45 opens facing the second suction chamber 24, it is located on the intake air passage 43 from the turbine chamber 38 to the communication pipe 32, that is, on the downstream side of the air turbine 37 and through the suction air passage 34. The first suction port 20 is open for communication, and the second suction port 23
Opens directly.

A bearing mounting rib 48 for mounting a first bearing 47, which is a bearing, is provided substantially in the center of the lower surface of the upper case 41 of the middle case 39, and the lower case of the middle case 39 is provided.
A bearing mounting rib 50 for mounting a second bearing 49, which is a bearing coaxially with the first bearing 47, is provided substantially at the center of the upper surface of the 40.

Further, the air turbine 37 is shown in FIGS.
As shown in FIG. 5, a rectifying plate 54 that expands toward one end side is provided on a peripheral surface of a substantially cylindrical shaft support 53 into which a rod-shaped shaft 52 is inserted, and the other end near the peripheral edge of the rectifying plate 54 is provided. A plurality of curved wind receiving plates 55 are formed on the side surface so as to protrude substantially in a radial shape. Further, an air turbine pulley 56 is integrally provided at an end of the shaft 52 on the side where the wind receiving plates 55 are provided.

In the air turbine 37, the air turbine pulley 56 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 52 have the first bearing.
An axial direction is substantially vertically supported by the 47 and the second bearing 49, and is rotatably supported in the turbine chamber 38.
The middle case 39 is accommodated and fixed in the case body 15 such that the second bearing 49 is located substantially at the center between the first cleaning body chamber 18 and the second cleaning body chamber 19.

A driven rear wheel chamber 59 is provided on both sides of the communication pipe 32 of the lower main body case 12 and a driven rear wheel 58 is rotatably supported by the driven rear wheel 58, and driven front wheels 60 are rotatably supported on both front end sides. A driven front wheel chamber 61 that is axially supported is formed.

On the other hand, in the first cleaning body chamber 18 and the second cleaning body chamber 19, the first rotary blade 63 as a rotary cleaning body is provided.
And a second rotating blade 64 are rotatably arranged. The second rotating blade 64 has a mandrel 66 provided with a spiral groove 65 in the circumferential direction clockwise on the peripheral surface of, for example, an aluminum alloy.
A plurality of, for example, four blade portions 67, which are scraping means as a cleaning member made of flexible vinyl chloride, are spirally engaged with the groove portion 65 so as to protrude in a wall shape on the outer peripheral surface. I have. The blade portion 67 is formed by forming a pedestal portion 69 in which one side edge of an elongated flat plate portion 68 in the longitudinal direction engages with the groove portion 65 of the mandrel 66 to have a large thickness.

Further, as shown in FIGS. 10 and 11, the first rotary blade 63 is a cloth blade which is a floor-polishing means as a cleaning body having flexibility on the outer peripheral surface and brushed 70 on one surface. A plurality of, for example, two double blade portions 72 having a substantially Y-shaped cross section, which is a scraping means as a cleaning body having flexibility, are alternately provided in a spiral shape. The cloth blade portion 71 is formed, for example, by forming a thick pedestal portion 69 made of soft vinyl chloride on one side edge in the longitudinal direction of an elongated plate-like raised cloth 73 made of polyester and provided with a raised 70 on one surface. Have been. The double blade portion 72 is a plate portion of the blade portion 67.
The plate portion 68 is formed to have a substantially Y-shaped cross section as if branched from the plate 68. Then, the length dimension of the cloth blade portion 71 protruding from the mandrel 66 is longer than the length dimension of the double blade portion 72 protruding from the mandrel 66, and when the surface to be cleaned is between the plates, only the cloth blade portion 71 is between the plates. The flooring effect, which is floor polishing, is obtained by contact.

Further, the first rotary blade 63 and the second rotary blade 63
At one end of the rotary blade 64, a pulley 75 is provided integrally with the mandrel 66, respectively. The first rotary blade 63 and the second rotary blade 64 are arranged such that the respective pulleys 75, 75 are located in the second drive transmission chamber 25, and the shaft portions 76, rotatably provided at both ends in the axial direction. 76 are respectively engaged with bearings 77 provided on the case body 15 and supported rotatably.

The first rotary blade 63 and the second rotary blade 64 are formed such that the outer diameter of the first rotary blade 63 is smaller than that of the first rotary blade 63, and the lower end of each of the first rotary blades 63 is the first cleaning body chamber. 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 71 is formed with the driven front wheels 60, 60 and the driven rear wheels 58, 58. It is provided so as to project further downward.

On the other hand, in the first drive transmission chamber 22, a drive converting means 79 which is a drive transmitting means is arranged. This drive converting means 79, as shown in FIG. 1, FIG. 4 and FIG.
A box body located on the end side of the first drive transmission chamber 22
A substantially rod-shaped first shaft 81 whose axial direction extends along the up-down direction is rotatably supported in 80. Then, at the lower end of the first shaft 81, a first endless belt 82a which is a drive transmitting means by the air turbine pulley 56 of the air turbine 37.
A first pulley 83 around which the first drive transmission chamber 22 is provided is provided, and a first bevel gear 84a is provided at the upper end.

Further, in the box body 80, a substantially rod-shaped second shaft 85 and a third shaft 86 are rotatably arranged substantially in parallel vertically along the lateral direction of the case body 15.
The second shaft 85 has the first shaft 81 at one end.
A second bevel gear 84b engaging with the first bevel gear 84a is provided, and the second pulley 87 facing the second drive transmission chamber 25 at the other end.
And a first gear 88a is provided at one end side of the intermediate portion. Further, a second gear 88b is provided at one end of the third shaft 86 to engage with the first gear 88a of the second shaft 85, and the other end faces the second drive transmission chamber 25. A third pulley 89 is provided. The second pulley 87 of the second shaft 85 is attached to the pulley 75 of the first rotating blade 63.
The second endless belt 82b, which is a drive transmission means, is wrapped at an angle, and the third pulley 89 of the third shaft 86 is transmitted by the pulley 75 of the second rotary blade 64 to the third pulley 89. A third endless belt 82c as a means is stretched in a substantially horizontal direction.

As shown in FIG. 6, the center of the second shaft 85 is located closer to the second rotary blade 64, that is, above the intermediate position between the first rotary blade 63 and the second rotary blade 64. The second shaft 85 located at
Is positioned so as to increase the distance between the first rotating blade 63 and the first rotating blade 63 which is inclined over the shaft 85. Also,
The third shaft 86 is located in a substantially horizontal direction with respect to the second rotating blade 64 that is bridged substantially horizontally with the third shaft 86, and between the third shaft 86 and the second rotating blade 64. Are positioned so that the distance between them becomes shorter.

Then, the rotation of the air turbine 37 causes the first
The first shaft 81 rotates via the endless belt 82a of
By this rotation, the first bevel gear 84a and the second bevel gear 84a
The second shaft 85 rotates via b. With the first gear 88a and the second gear 88b meshing with each other by the rotation of the second shaft 85, the third shaft 86 rotates in the opposite direction with respect to the second shaft 85, and the second endless belt
The first rotary blade 63 rotates in the forward direction with respect to the forward direction of the suction port main body 11 via the second rotary blade 82b.
Numerals 64 are reversely rotated with respect to the forward direction of the suction port main body 11, that is, rotate inward with each other. The first
The rotating blade 63 rotates toward the raised side 70 of the cloth blade portion 71.

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

At the time of cleaning, the suction port body 11 is connected to an electric vacuum cleaner body (not shown) through an extension pipe and a hose,
The end portion of the hose on the extension tube side is gripped and pushed to move the suction port main body 11 back and forth while making contact with the floor surface which is the surface to be cleaned.

Then, the suction force of the main body of the electric vacuum cleaner sucks air from the suction port 44 and also from the first suction port 20 and the second suction port 23. Where the suction body
11 is placed on the floor, the first suction port 20
Are a first rotating blade 63 and a second rotating blade 64
Since the first rotary blade 63 and the second rotary blade 64 are located between them, they are sealed by the floor and the negative pressure on the lower surface of the suction port main body 11 increases.

By the way, the second suction port 23, which is closer to the first suction port 20 than the communication pipe 32, is opened in the second cleaning body chamber 19, so that the second rotary blade 64 makes the air passage. Since the resistance is increased and the opening area is smaller than the opening area of the first suction port 20, the suction force from the first suction port 20 and the suction force from the second suction port 23 are approximately 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 44 of the same degree is equal to the negative pressure of the lower surface of the suction port body 11 facing the floor surface. Increased intake
It is the rate at which the intake volume from 44 increases.

When the floor surface is a carpet such as a carpet having a particularly long foot, the first suction port 20 facing the floor surface is closed. Therefore, the negative pressure on the lower surface of the suction port body 11 when the floor surface is a carpet becomes larger than the negative pressure on the lower surface of the suction port body 11 when the floor surface is between the plates, etc. The intake amount of increases.

The air taken in through the intake port 44 passes through the trumpet-shaped intake air supply air passage 43a having an interference function of gradually reducing the cross-sectional area while being rectified and reaches the turbine chamber 38 in a spiral shape, and this spiral The air turbine 37 rotates at a speed proportional to the amount of intake air due to the suction air flow. This rotational drive force is transmitted to the drive converting means 79 via the first endless belt 82a, and the drive converting means 79 converts the rotational drive about the vertical direction into two rotational drive forces about the horizontal direction. The converted second endless belt 82b and the third endless belt 82c
The first rotary blade 63 and the second rotary blade 64 rotate in opposite directions at a speed proportional to the amount of intake air. Then, by rotating the first rotary blade 63 and the second rotary blade 64, dust is scraped from the floor surface,
The dust that has been scraped out and is located in the first cleaning body chamber 18 is sucked from the first suction port 20 through the communication air passage 28, and the dust that is located in the second cleaning body chamber 19 is It is sucked from the second suction port 23 as it is. In addition, the suction airflow that has flowed into the turbine chamber 38 passes through the communication hole 45 and the second suction chamber 24.
To flow into the communication pipe.

Since the first suction port 20 is located on the spiral direction side of the first rotary blade 63, the dust 90 in the first cleaning body chamber 18 has a suction force as shown in FIG. Is sucked in and the spiral direction in a rotated state, that is, the direction guided by the cloth blade portion 71 and the double blade portion 72 is the same direction, so that the dust 90 scraped out from the floor surface has a suction force. The cloth blade portion 71 and the double blade portion 72 smoothly pass through the communication air passage 28 to the first suction port 20.
Sucked into. In addition, the second suction port 23 is opened substantially at the center of the second cleaning body chamber 19, and the second rotating blade 64 is reversely rotated in a direction opposite to the spiral direction of the first rotating blade 63, Direction of suction by suction force and blade part
The direction guided by 67 is the opposite direction, and the second suction port
Part of the dust 90 that is not sucked in from the 23 is moved by the blade 67 in a direction away from the second suction port 23, and is located at the end on the guided side and opposite to the first suction port 20. The first cleaning body chamber 18 is guided to the first cleaning body chamber 18 through a communication recess 27 that communicates the second cleaning body chamber 19 and the first cleaning body chamber 18 provided on the side of the first cleaning body chamber 18. It is sucked into the suction port 20.

When the floor surface is between the plates, only the cloth blade portion 71 of the first rotary blade 63 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 reaches to the wall.
Raise 90 so that it sweeps up, and flooring between the boards to the wall.

By the way, since the intake port 44 has a smaller opening area than the first intake port 20 and the second intake port 23, and the air turbine 37 serving as the air passage resistance is located in the intake air passage 43,
The suction from the first suction port 20 and the second suction port 23 is almost impossible, and the suction force from the first suction port 20 and the second suction port 23 is reduced. And the first
The dust 90 is scraped off by the rotation of the rotating blade 63 and the second rotating blade 64, so that the dust 90 is easily sucked, and almost no suction is left due to a decrease in the suction force.

Here, when the hose is placed on the floor surface by moving furniture or the like, the lower surface of the suction port main body 11 is separated from the floor surface, or the first suction port 20 and the second suction port 23 are large. If something is sucked in and blocked, the first rotating blade 63
And when thread dust, hair, etc. are entangled in the second rotating blade 64, these are removed, so when the suction port body 11 is lifted from the floor surface, the negative pressure on the lower surface of the suction port body 11 is reduced, The ratio of the amount of suction from the first suction port 20 and the second suction port 23 to the amount of suction from the suction port 44 increases the amount of suction from the first suction port 20 and the second suction port 23. It becomes a ratio. Furthermore, a communication pipe from the turbine chamber 38 of the intake air passage 43
The suction air passage 34 is located downstream of the air turbine 37 up to 32
Since the first suction port 20 communicates with and opens the second suction port 23 directly, the suction air flow in the intake air passage 43 generated by the intake air from the intake port 44 is greatly reduced, The rotation speed of the turbine 37 is greatly reduced or stopped,
The rotation speeds of the first rotary blade 63 and the second rotary blade 64 are also greatly reduced or stopped.

The first rotary blade 63 and the second rotary blade 63
When removing the first rotating blade 63 and the second rotating blade 64 in order to remove lint, hair and the like entangled with the rotating blade 64, the mounting device 30 is removed and the closing plate is removed.
29, remove the shaft 76 on the side where the pulley 75 is not
The shaft 76 on the pulley 75 side is removed from the bearing 77 by moving the pulley 75 side downward with the fulcrum as a fulcrum, and the second endless belt 82b
In addition, the pulley 75 can be removed from the third endless belt 82c, and the shaft portion 76 serving as a fulcrum can be removed from the bearing 77 to remove it. The reverse operation is carried out when assembling.

According to the above-described embodiment, since the intake port 44 is formed at the rear side where the communication pipe 32 is led out, the intake port 44 is not blocked by the wall, furniture, curtain, etc. during cleaning, and the efficiency is improved. The air turbine 37 can be rotated well, and a dead space that pivotally supports the communication pipe 32 is generated so as not to interfere with the air turbine 37, but this dead space is effectively used to draw a spiral suction into the turbine chamber 38. It is possible to form the intake air supply air passage 43a that rectifies and supplies the air flow,
Further improvement of the driving torque of the air turbine 37 and downsizing can be easily achieved.

Further, in order to supply a suction airflow in a spiral manner to the air turbine 37 in the turbine chamber 38 from the intake port 44 which is not blocked by walls, furniture, curtains, etc., the intake air supply passage 43
Since a 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 44 to communicate with each other, the portion that reaches the turbine chamber 38 is gradually opened with a simple structure. The intake air supply air passage 43a having a small area can rectify the intake airflow, and can reduce wind noise of the air turbine 37, thereby reducing noise.

Further, since the intake port 44 is formed at a position which is a substantially vertical surface of the case body 15, fine dust in the air 90
The intake port 44 can be prevented from being blocked due to the accumulation of air on the intake port main body 11, the reduction of intake efficiency can be suppressed, and the air turbine 37 can be efficiently rotated.

Since the first suction port 20 and the second suction port 23 for sucking the dust 90 are located at the downstream side of the air turbine 37 from the turbine chamber 38 of the intake air passage 43 to the communication pipe 32, they are opened. At the time of cleaning, a negative pressure on the lower surface of the case body 15 is obtained on the floor surface, and the airflow 37 rotatably provided in the intake air passage 43 is efficiently rotated by the intake airflow from the intake port 44 to rotate the rotating blades 63. , 64 rotate to scrape out dust 90 from the floor surface and efficiently inhale through the suction ports 20 and 23, and each suction port 2
When the lower surface of the case body 15 is separated from the floor surface by a predetermined distance by lifting the case body 15 or the like by 0 and 23 acting as a suction port for sucking the dust 90, the lower surface of the case body 15 is downstream of the air turbine 37. The first suction port 20 located in the intake air passage 43 on the side and opened via the suction air passage 34, and the second opening directly opened
The suction port 23 is opened and the intake air amount from the intake port 44 is greatly reduced, the rotation of the air turbine 37 is stopped or greatly reduced, and the rotation of each rotating blade 63, 64 is stopped or greatly reduced. , 23 acts as a leak port.

For this reason, the scraped-out dust 90 can be easily sucked in efficiently from the first suction port 20 and the second suction port 23 where a negative pressure is ensured, and the first suction port 20 can be cleaned. Also, when the suction port body 11 is lifted to the second suction port 23, the rotation of the air turbine 37 is reduced and each rotary blade 6
Since it also has a function as a leak port that lowers the rotation of 3, 64, it has both a function as a suction port that sucks dust 90 with a simple structure, and there is no need for an opening and closing means for opening and closing the leak port. The rotation of the rotary blades 63 and 64 can be easily reduced with a simple structure, the size and weight can be easily reduced, and the wind noise caused by the rotation of the rotary blades 63 and 64 can be reduced.

Further, the first cleaning body chamber 18 and the first suction port
The first suction port 20 is located downstream of the air turbine 37 from the turbine chamber 38 of the intake air passage 43 to the communication pipe 32 via the suction air passage 34. Since it is opened, the scraped-out dust 90 can be easily sucked from the first suction port 20 where a negative pressure is secured. That is, it has a function as a leak port that reduces the rotation of the air turbine 37 when the suction port body 11 is lifted, and the dust 90
Both of the functions as a suction port can be achieved with a simple structure, and the leak action can be further increased.

Since the communication air passage 28 has a concave groove shape, dust 90 is generated as compared with the case where the communication air passage 28 is formed in a tubular shape with a tubular object or the like.
It can be prevented from being caught, and maintenance management such as removal of dust 90 can be done easily. The communication air passage 28 may have a structure in which the first cleaning body chamber 18 and the first suction chamber 21 communicate with each other by a tubular object.

The first cleaning body chamber 18 and the first suction port 20
Are communicated with each other in the groove-shaped communication air passage 28, and the closed state of the first suction port 20 and the communication air passage 28 differs depending on the type of the surface to be cleaned, for example, between the boards, tatami mats, carpets, etc. The pressures are different, and the ratio between the amount of suction from the first suction port 20 and the second suction port 23 and the amount of suction from the suction port 44 varies. Therefore, when the space is between the plates, the suction amount from the intake port 44 is small and the rotation of each of the rotating blades 63 and 64 is low. In the case of a carpet, the suction amount from the intake port 44 is large and each rotating blade is large. Since the rotation of 63, 64 increases, a separate floor surface detection means is not required, and each rotating blade 63, 64 has a simple structure according to the floor surface.
The rotation of can be changed, and cleaning workability and cleaning efficiency can be further improved.

Further, since the second suction port 23 is opened on the downstream side of the communication pipe 32 side from the communication hole 45 through which the intake air passage 43 communicates with the communication pipe 32, when the suction port main body 11 is lifted, Since the suction resistance from the second suction port 23 is smaller than the suction resistance from the suction port 44 to the communication hole 45 through the turbine chamber 38 and is located on the downstream side, the second suction port 23 acts similarly to the leak port. Since the air is easily taken in through the second suction port 23, the rotation of the air turbine 37 can be further reduced, and the rotary blades 63,
64 rotations can be reduced.

Further, the first rotating blade 63 and the second rotating blade 64, which are spiral-shaped in the clockwise direction, are rotated inward in the opposite direction in which the spiral direction is opposite to that of the first rotating blade 63. The first suction port 20 is opened on the spiral side in the rotated state, and the first cleaning body chamber
Since the 18 and the second cleaning body chamber 19 are communicated with each other through the communication recessed portion 27 provided on the spiral direction side of the first rotary blade 63 on the side opposite to the first suction port 20, the suction of the first suction port 20 is performed. The direction of being sucked by the force and the direction of being guided by the cloth blade portion 71 and the double blade portion 72 of the first rotary blade 63 are the same, and the dust 90 scraped out from the floor surface is attracted by the cloth blade portion 71 and the cloth blade. The part 71 and the double blade part 72 are smoothly sucked into the first suction port 20 through the communication air passage 28. Further, the second suction port is provided at the blade portion 67 of the second cleaning body chamber 19.
The dust 90 moved in a direction away from 23 is guided to the first cleaning body chamber 18 through the communication recess 27,
Is sucked into the suction port 20. Therefore, each cleaning body room 18,
It is possible to prevent the dust 90 from remaining in the interior of the suction port 19 without being sucked, thereby improving the cleaning performance, reducing contamination by the dust 90 on the lower surface of the suction port main body 11, and reducing the frequency of maintenance management.

Since the communication recess 27 has a groove-like shape, dust 90 is not caught and the dust 90 is removed as compared with the case where the communication air passage 28 is formed into a tubular shape with a tubular object. Easy maintenance management. The communication recess 27 may have a structure in which the first cleaning body chamber 18 and the second cleaning body chamber 19 communicate with each other by a tubular member.

Further, the shaft body 52 of the scroll flat type air turbine 37 capable of obtaining a large torque is positioned between the first cleaning body chamber 18 and the second cleaning body chamber 19 in the axial direction along the vertical direction. Since the second bearing 49 for rotatably supporting the shaft body 52 is disposed between the first cleaning body chamber 18 and the second cleaning body chamber 19 below the upper ends of the rotary blades 63, 64. ,
Since the air turbine 37 is positioned so as to overlap the first cleaning body chamber 18 and the second cleaning body chamber 19, a plurality of, for example, two rotary blades 63, 64 are rotationally driven to improve the cleaning performance. Space dimension before and after the traveling direction for arranging the air turbine 37 and a vertical space dimension for arranging the second bearing 49, which is a bearing, even though a large torque required for Can be reduced and downsizing can be achieved. Since the air turbine 37 has the flow straightening plate 54 that expands toward the one end side, the first bearing 47 that is a bearing is used by utilizing the space on the expansion side of the flow straightening plate 54. It can be installed and further miniaturization can be achieved.

Further, drive transmission means for transmitting the drive of the air turbine 37 to the rotary blades 63, 64, that is, the first transmission means
Since the endless belt 82a and the drive converting means 79 are disposed separately from each other between the first cleaning body chamber 18 and the second cleaning body chamber 19 on the side opposite to the suction air passage 34, the vertical dimension is reduced. The second endless belt 82b can be reduced in size and further downsized, and separated from the suction air passage 34 via the drive converting means 79.
And the first rotating blade 63 with the third endless belt 82c.
And, in order to transmit the drive to the end portion of the second rotary blade 64, the first dust-free belt 82a, which is the drive transmission means, the drive conversion means 79, the second endless belt 82b, are sucked in by the dust 90.
Also, the third endless belt 82c is not contaminated and maintenance is easy.

In addition, the scroll deflection type air turbine 37
A suction air passage 43a for supplying a suction airflow in a spiral shape is located on the side opposite to the suction 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. As a result, the intake air passage 34 and the intake supply air passage 43a do not overlap, and the size can be further reduced.

On the other hand, a cloth blade portion 71 which is a floor polishing means having a floor polishing effect and a blade portion 67 which is a scraping means having a dust cleaning effect are provided on the first rotary blade 63 located on the front side in the traveling direction. Since it is provided, the 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 floor surface, it is possible to clean up to the wall edge without switching separately according to the state of the floor surface.

Further, since the scraping effect of the blade portion 67, which is reduced by providing the cloth blade portion 71 on the first rotary blade 63, is compensated for by providing the double blade portion 72, when the suction port body 11 is moved forward and backward. The cleaning effect can be made substantially equal, and the cleaning efficiency can be further improved.

Further, since the outer diameter of the first rotary blade 63 located on the front side is smaller than the outer diameter of the second rotary blade 64, the first rotary blade 63 is arranged up to the frontmost portion in the case body 15. In addition to being installed, the distance between the position where the first rotary blade 63 comes into contact with the floor surface and the edge of the wall can be shortened, and the edge of the wall can be cleaned.

Moreover, the outer diameter of the first rotary blade is set to the second
Since the outer diameter of the rotary blade is smaller than that of the first rotary blade 63, the load from the floor surface of the first rotary blade 63 is small. Therefore, when the suction main body 11 moves forward, the rear side of the suction main body 11 is on the floor via the communication pipe 32. The second rotating blade on the rear side even if pressed strongly against the surface
Since the driving force is transmitted to 64, cleaning by the second rotary blade 64 can be reliably performed.

Further, the second shaft 85, which slants the second endless belt 82b around the first rotating blade 63, is installed from the intermediate position between the first rotating blade 63 and the second rotating blade 64. The second rotary blade 64 is arranged at a position where the distance between the rotary blade 64 and the second rotary blade 64 becomes long,
The third shaft 86, which bridges 82c in a substantially horizontal direction,
When the first rotating blade 63 and the second rotating blade 64 are removed, the second rotating blade 64 is disposed at a position where the distance on the second rotating blade 64 side is shorter than the intermediate position between the first rotating blade 63 and the second rotating blade 64. Cleaning body chamber by rotation of
The first rotating blade 63 and the second rotating blade 64 can be prevented from contacting the lower opening edges of the cleaning body chamber 18 and the second cleaning body chamber 19 from becoming difficult to remove, and the first rotating blade 63 can be easily removed.
And the second rotating blade 64 can be attached and detached.

In the above embodiment, not only the canister type vacuum cleaner but also the upright type in which the suction port main body 11 is directly formed on the lower surface of the vacuum cleaner main 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, a valve body or a shutter may be separately provided in the middle of the intake air passage 43 so that the rotational speed of each rotary blade 63, 43 can be varied by continuously adjusting the opening.

On the other hand, the rotary cleaning body is a rotary blade.
In addition to 63 and 64, any one such as a rotary brush having a wall-shaped raised brush or a brush having only a cloth blade portion may be used.

Although two rotary cleaning members are provided in the above description, one or more rotary cleaning members may be provided.

[0065]

According to the suction inlet of the first aspect of the present invention, during cleaning, the air turbine rotatably provided in the turbine chamber provided in the intake air passage is connected to the hose, for example. It rotates by the suction airflow from the intake port that opens in the direction in which the communication pipe exits, the rotary cleaning body rotates, scrapes out dust from the surface to be cleaned, and removes dust from the suction port that opens to the communication pipe side through the suction air passage. Since it is sucked and cleaned, the intake port is not blocked by walls, furniture, curtains, etc., and the suction airflow is reliably obtained, the rotary cleaning member can be efficiently rotated, and the cleaning efficiency can be easily improved.

According to the suction port body of the vacuum cleaner of the second aspect, in addition to the suction port body of the vacuum cleaner of the first aspect, there is an interference function of communicating from the intake port to the front part of the turbine chamber. Since the intake air supply path is provided, the intake airflow from the intake port to the air turbine can be interfered with to make it easy to rectify and supply with a simple structure, and noise can be reduced with a simple structure Torque for rotating the air turbine In addition, the intake space can be easily improved, and the intake space can be provided in the vicinity of the communication pipe rotatably in the vertical direction of the case body by effectively utilizing the dead space caused by the interference with the air turbine. Can be miniaturized.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view showing an embodiment of a suction opening of an electric vacuum cleaner according to the present invention.

FIG. 2 is a bottom view of the same.

FIG. 3 is a rear view of the same.

FIG. 4 is a front sectional view of the same.

FIG. 5 is a sectional side 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 cross-sectional view showing the air turbine.

FIG. 8 is a bottom view of the same.

FIG. 9 is a plan view of the same.

FIG. 10 is a perspective view showing a first rotary blade of the above.

FIG. 11 is a sectional view of the same.

FIG. 12 is an explanatory diagram for explaining a situation in which dust is moved by the rotation of the rotary blade.

[Explanation of symbols]

 11 Suction port main body 15 Case body 20 First suction port 23 Second suction port 32 Communication pipe 37 Air turbine 38 Turbine chamber 43 Intake air duct 43a Intake air supply duct 44 Intake port 63 First rotation as a cleaning body Blade 64 Second rotary blade as rotary cleaning body

Claims (2)

[Claims] 1. A case body having a suction port opened on a lower surface facing a surface to be cleaned and having an intake port opened separately from the suction port, and a case body provided on the case body and communicating with the suction port. A communication pipe that communicates with the mouth through an intake air passage and is led out in a direction in which the intake opening opens; a rotary cleaning member that is rotatably disposed in the case body so as to face the lower surface; and in the intake air passage. And a turbine chamber for rotatably rotatably supporting an air turbine for rotating and driving the rotary cleaning body by the suction airflow, and supplying the suction airflow to the air turbine. . 2. The communication pipe is provided so as to be rotatable in the up-down direction, and the intake air passage has an interference function of communicating from an intake port opening at a rear portion in the traveling direction of the case body to a front portion of the turbine chamber. The suction port body of the vacuum cleaner according to claim 1, further comprising an intake air supply passage.