JP3525066B2 - Suction port body and vacuum cleaner - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the operation of an electric blower in a cleaner body to suck air through an air inlet of an air inlet body, pass the air through a filter to capture dust, and then pass through the filter. Te returning the air discharged from the electric blower to the suction port, the returned air is recovered and relates to an electric vacuum cleaner and the suction port body which comprises an air circulation type to clean while circulating.

[0002]

2. Description of the Related Art U.S. Pat. No. 5,168,559 discloses air discharged from an electric blower in a cleaner body.
An air-circulation electric cleaning system for performing air-circulation type cleaning by spraying the blades of the rotary cleaning body to rotate the rotary cleaning body, collecting the air rotated by the rotary cleaning body and sucking the air into the electric blower. Machine is listed.

According to the technique described in US Pat. No. 5,168,559, each blade arranged at intervals in the circumferential direction is provided so as to extend parallel to the axial direction of the rotary cleaning body, and the rotary cleaning is performed. To the blade that was moved to the bottom of the body,
By blowing air discharged from the electric blower along the surface to be cleaned, the rotary cleaning body is rotated.

As described in this publication, the structure of the suction port body for blowing the circulating air to the blade to drive the rotary cleaning body to rotate has an electric motor, an air turbine, an air turbine, etc. for rotating the rotary cleaning body. It is excellent in that it does not require a power transmission mechanism to the rotary cleaning body.

Further, the air sucked into the cleaner body is discharged to the outside of the cleaner body without being circulated, so that the outer peripheral surface is included in the rotary cleaning body used in the vacuum cleaner for vacuum suction type cleaning. Japanese Patent Application Laid-Open No. 10-33424 discloses a plurality of V-shaped blades. In this publication, the dust scraped out by the V-shaped blade is moved to the central portion or both ends of the rotary cleaning body by the twist of the blade, and the dust scraped in this way is provided so as to face the scraped position. It is designed to suck into the entrance of an arm (communication pipe) communicating with the main body of the vacuum cleaner.

[0006]

However, US Pat. No. 5
When each blade extends parallel to the axial direction of the rotary cleaning body as described in 168559, when the number of blades is small, the blades and the blades adjacent to each other are alternately arranged from the electric blower. Since it faces the recirculation outlet that blows out the discharged air, unevenness occurs in the rotation speed and the rotation torque of the rotary cleaning body. Along with this, the ability of the blade to scrape dust off the surface to be cleaned, and eventually the dust suction performance, is reduced, and noise is easily generated. Moreover, since the flow of the air collected around the rotary cleaning body to the electric blower side is disturbed by the uneven rotation, the outside air containing dust passing through the intake port of the suction port body facing the rotary cleaning body is disturbed. There is a problem that the suction performance, and eventually the dust suction performance, are easily deteriorated.

In the configuration of FIG. 1 among those disclosed in Japanese Patent Laid-Open No. 10-33424, the V-shaped blade has a slanted shape on both sides of the V-shaped top opposite to the suction port (the inlet of the communicating pipe). The dust on the surface to be cleaned is scraped out ahead of both ends, and when the top scrapes out the dust, the scraping operation of the slanted ends has already been completed. The suction performance is low at the center side of the. Similarly, in the configuration of FIG. 6 of the publication, the V-shaped top portion facing the suction port (inlet of the communication pipe) of the V-shaped blade precedes the diagonal end portions on both sides thereof on the surface to be cleaned. When the dust is scraped out and the slanted end portions scrape the dust out, the scraping operation of the top portion has already been completed, so that the dust scraped at the central portion of the rotary cleaning body has a low ability to be sucked in at both end sides of the rotary cleaning body.

The first problem to be solved by the present invention is
(EN) It is intended to obtain a suction port body for an air circulation type vacuum cleaner capable of improving the dust suction performance.

A second problem to be solved by the present invention is
An object is to obtain an air circulation type vacuum cleaner that can solve the first problem.

[0010]

[0011]

[0012]

According to a first aspect of the present invention, the air sucked by the operation of an electric blower incorporated in a cleaner body is passed through a filter to capture dust, and the dust is passed through the filter to drive the electric motor. It is premised on a suction port body provided in an electric vacuum cleaner that collects air discharged from a blower and circulates the air for cleaning.

In order to solve the first problem, the suction port body for an air circulation type electric vacuum cleaner according to the invention of claim 1 removes air on the surface to be cleaned as the air circulates. a suction port body main portion having an inlet for sucking, a communicating pipe communicates with the cleaner body side is provided on the main portion, this
Part of the inlet of the communication pipe is opposed to the inlet
Rotatably mounted inside the main body of the suction inlet
And a plurality of V-shaped cleaning members on the outer peripheral surface.
Over the entire length of the rotary cleaning body, and
If the V-shaped top of the sweeping member is the leading side in the rotational direction
In addition, the dust scraped by the V-shaped cleaning member is
Said V-shape with adjacent V-shaped grooves leading to the inlet side of the communication pipe
The rotating cleaning body formed between the cleaning members and this
Place the rolling cleaning body between the suction port and the suction port body
Is provided on the V-shaped cleaning member from above.
As the circulating air is blown, this blown sky
So that air is blown onto the surface to be cleaned from above.
A reflux outlet that is shifted to the front side from the axis of the rolling cleaning body ,
It is equipped with.

In the invention of claim 1, the air discharged from the electric blower circulates through the suction port body, and accordingly the air sucked together with the dust on the surface to be cleaned from the suction port of the main body of the suction port body is sucked. , It is possible to perform air circulation type cleaning by sucking it into the cleaner body side through the communication pipe, and at that time, the air returned to the main part of the suction port body is V-shaped of the rotary cleaning body from the reflux outlet of this main part. Since the cleaning member is sprayed and sucked into the communication pipe, the rotary cleaning body can be rotated with the spraying. Therefore, it is possible to perform air circulation type cleaning while scraping off the dust on the surface to be cleaned by the V-shaped cleaning member of the rotary cleaning body.

At the time of this cleaning, the V-shaped cleaning member of the rotary cleaning member which is rotated by blowing air from the recirculation outlet is in contact with the surface to be cleaned and is swept over the substantially entire length of the rotary cleaning member. Scrape the surface dust. In this case, the rotary cleaning member is rotated by the configuration of the V-shaped cleaning member such that its V-shaped top portion is rotated ahead of both end portions of the V-shaped portion, so that on the side facing the inlet of the communication pipe, By using the transporting force of the air sucked into the inlet of the communication pipe through the V-shaped groove portion between the adjacent V-shaped cleaning members, the dust cleaned by the V-shaped cleaning member is rotated. It can be moved from both ends to the central part.

In carrying out the invention of claim 1, as in the invention of claim 2 subordinate to this invention, it is preferable that the inlet of the communication pipe is opposed to the V-shaped top of the cleaning member. In this way, in addition to the action of the invention of claim 1, the transport force of the air flowing toward the central portion of the rotary cleaning body in the V-shaped groove portion between the V-shaped cleaning members is utilized. The collected dust can be easily and smoothly sucked into the inlet of the communication pipe, and since the blown air is guided by the V-shaped groove and collected in the central portion, it is blown onto the V-shaped cleaning member. It is excellent in that it is possible to reduce the amount of fresh air flowing out from the longitudinal end of the rotary cleaning body.

In carrying out the invention of claim 1 or 2, like the invention of claim 3 which depends on these inventions,
It is preferable that at least the recirculation outlet be opposed to the V-shaped top of the cleaning member. By doing so, in addition to the action of the invention of claim 1 or 2, since the circulating air is blown directly to the dead end portion of the V-shaped cleaning member on the downstream side in the twisting direction, the slanted end portions The inclination serves as a resistance, and the air blown to the V-shaped cleaning member is suppressed from flowing toward both ends along the longitudinal direction of the cleaning member. Therefore, the rotation torque of the rotary cleaning body due to the air blown on the V-shaped cleaning member can be improved, and the air blown on the V-shaped cleaning member can flow out from the longitudinal end of the rotary cleaning body. It is excellent in that it can reduce

In carrying out the invention of claim 1 or 2, like the invention of claim 4 which depends on these inventions,
At least the V-shaped ends of the cleaning member may be opposed to the reflux outlet. By doing so, in addition to the action of the invention of claim 1 or 2, since the circulating air is blown directly to the oblique ends of the V-shaped cleaning member, this air is applied to the oblique ends. It is possible to guide and spray to the top of the continuous V-shaped cleaning member, in other words, to the dead end on the downstream side in the twisting direction of the V-shaped cleaning member. Therefore, the rotation torque of the rotary cleaning body due to the air blown on the V-shaped cleaning member can be improved, and the air blown on the V-shaped cleaning member can flow out from the longitudinal end of the rotary cleaning body. It is excellent in that it can reduce

In the electric vacuum cleaner according to the invention of claim 5, the air on the surface to be cleaned is sucked from the suction port of the suction port body by the operation of the electric blower in the cleaner body, and the sucked air is passed through the filter. It is premised on an electric vacuum cleaner that captures dust, returns the air that has passed through the filter and is discharged from the electric blower to the intake port, and collects and circulates the returned air to perform cleaning. And in order to solve the said 2nd subject, the vacuum cleaner which concerns on invention of Claim 5 made the said suction opening body into the suction opening body of any one of said Claims 1-4 . It is characterized by that.

Therefore, in this air circulation type vacuum cleaner, by providing the suction port body according to the inventions of claims 1 to 4, the invention of any one of the inventions of claims 1 to 4 described above is provided. The action of can be obtained.

[0021]

[0022]

[0023]

[0024]

[0025]

[0026]

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 1 and 2, an upright type air circulation type vacuum cleaner 11 according to the first embodiment includes a cleaner body 12, a suction port body 13, and a handle 14. .

The cleaner body 12 is formed by connecting a pair of left and right synthetic resin body cases 21 with screws or the like. The handle 14 is connected to one side of the upper end portion of the main body case 21 (the side that becomes the back side when used) via a pivotal attachment portion 15. Handle 14 having operation switch 14a
1 is disposed in a use position that continuously extends above the cleaner body 12 as shown in FIG. 1 when used, and when not used, the cleaner body is folded downward by pivoting around the pivotal attachment portion 15. 12 is disposed in a non-use position along the back side.
The length of the handle 14 is substantially equal to the total length of the cleaner body 12 and the suction port body 13 connected to the cleaner body 12 as described below, and the lower end of the handle 14 in the non-use position is in contact with the floor surface. In this case, the vacuum cleaner body 12 can be supported so as not to lose its self-standing posture.

A connection port 22 exposed at the lower end surface of the main body case 21 is attached to the lower end portion. As shown in FIG. 3, the suction port body 13 is detachably inserted and attached to the connection port 22. This connection port 22 has a large diameter portion 22a.
And a small diameter portion 22b are connected to form a stepped cylindrical shape,
A plurality of ventilation holes 22c are provided at intervals in the circumferential direction on the wall surface that defines the boundary between the small diameter portion 22b and the large diameter portion 22a.

As shown in FIG. 2, required partition ribs whose tips are brought into contact with each other are integrally provided on the inner surfaces of the two main body cases 21, and the main body case 21 is provided by these ribs. Inside is the dust collection chamber 23 at the bottom,
It is partitioned into an exhaust chamber 24 in the middle part, a reel housing part 25 in the upper part, and a recirculation chamber 26 extending over the dust collection chamber 23 and the exhaust chamber 24. The dust collection chamber 23, which is located on the front side of the exhaust chamber 24 (upstream side with respect to the intake air), is opened on the surface that is the front side when the cleaner body 12 is used, and this opening can be attached to and detached from the lower portion of the body case 21. Case lid 27 attached to
It is hermetically closed by.

As shown in FIG. 3, the slanted bottom wall portion of the dust collecting chamber 23 is formed as a filter mounting portion 28, and the vicinity of the filter mounting portion 28 is manually operated against the force of a spring (not shown). 2 A filter retainer 30 is attached which is pivotally operated about a pivot 29 in the direction of the middle arrow E. Filter attachment portion 28 and small diameter portion 22b of connection port 22
An annular rubber seal 20 for airtightly partitioning these is interposed between and, and the seal 20 integrally has a valve plate portion 20a for opening and closing a suction opening of a mouth frame described below. There is. The valve plate portion 20a is pulled by the suction negative pressure to open the suction opening, and is returned to the position where the suction opening is closed by its own elastic force as the negative pressure disappears.

A dust collecting bag 31 made of a paper pack as a filter that can be put into and taken out of the dust collecting chamber 23 has a flat plate-shaped mouth frame 31a having a suction opening at the center thereof, which is filtered by a filter holder 30. It is attached to the attachment portion 28 and is housed in the dust collection chamber 23. A filter support 32 having a large number of elongated ventilation holes is housed in the upper portion of the dust collection chamber 23, and the filter support 32 supports the dust collection bag 31 that has expanded due to the cleaning operation.

An electric blower 35 is installed in the exhaust chamber 24 with its suction port facing the dust collecting chamber 23 side. 36, 3
Reference numeral 7 is a vibration-proof motor supporting rubber fitted to both front and rear ends of the electric blower 35. The partition rib 38 located at the boundary between the exhaust chamber 24 and the dust collecting chamber 23 is provided with an opening 38a facing the suction port, so that the dust collecting bag 31 in the dust collecting chamber 23 is passed. Air is an electric blower 35
Is sucked into. Reference numeral 45 in FIG. 2 is arranged in communication with the suction side of the electric blower 35 and opens when the vacuum pressure in the dust collection chamber 23 falls below a predetermined value to collect the air (outside air) outside the cleaner body 12. It is a leak valve for introducing into the dust chamber 23.

The electric blower 35 has an electric blower 35a and a motor cover 39 attached to the blower 35a. As shown in FIG. 2, the electric blower 35a is
A commutator motor portion 35c, which is a component other than the blower portion such as a stator and a rotor, is projected downstream of the blower portion 35b in which the diffuser and the centrifugal fan are housed inside the fan cover. The motor support rubber 36 is fitted on the outer peripheral surface of the fan cover. During operation of the electric blower 35, the air in the dust collecting chamber 23 side sucked into the centrifugal fan through the suction port is discharged from the periphery of the fan, and then is guided by the inner surface of the fan cover while being guided to the outer periphery of the diffuser. From the entrance of the department, and
While being statically pressured by this diffuser, it is mainly discharged toward the periphery of the commutator motor portion 35c and the like.

The motor cover 39, which is molded in a cup shape from synthetic resin, covers the portion of the blower portion 35b on the downstream side of the diffuser. The opening edge portion of the cover 39 is fitted on the outer peripheral portion of the fan cover with the motor supporting rubber 36 that hermetically seals between the both covers sandwiched therebetween. On the peripheral wall of the motor cover 39, a plurality of exhaust small holes (not shown) communicating the inside of the motor cover 39 with the exhaust chamber 24 are formed, and an exhaust port (not shown) facing the exhaust chamber 24 (not shown) in the main body case 21 ( The exhaust area is much larger than that of the exhaust small holes), and a predetermined amount of air is exhausted to the outside of the cleaner body 12 with respect to the circulating air volume by these exhaust paths to obtain the required intake performance. Is able to.

The motor support rubber 37 is attached to the central portion of the bottom wall of the motor cover 39 so as to project from the outer surface thereof. Electric blower 35 provided with this motor cover 39
With the motor support rubbers 36 and 37 fitted to both axial ends thereof, respectively, in the exhaust chamber 24 and the reel housing portion 25.
It is installed by being inserted between the partition rib 21b and the partition rib 38 which form the boundary of the above. As shown in FIG. 2, a cord reel 40 for supplying power to the electric blower 35 is housed in the reel housing portion 25.

As shown in FIG. 2, an air outlet 41 having an opening area much larger than that of the exhaust small hole (not shown) is integrally provided on the periphery of the motor cover 39, and a rubber is provided at the outlet 41. The packing 42 is fitted. The air outlet 41 is airtightly connected to a hole 44 provided in a partition rib 43 that partitions the reflux chamber 26. Therefore, the inside of the motor cover 39 and the recirculation chamber 26 are communicated with each other via the air outlet 41.

Next, the suction port body 13 will be described with reference to FIGS. The suction port body 13 includes a communication pipe 51 made of synthetic resin as a connection part that is communicated with the cleaner body 12 side, a suction port body main part 52 made of synthetic resin, a rotary cleaning body 53, and a reflux outlet 54. And a return air passage A and a suction air passage B.

The connecting pipe 51, which is connected to the cleaner body 12 side by being detachably fitted into the connecting port 22, is connected to the connecting port 2 as shown in FIGS. 3, 8 and 9.
The large-diameter outer pipe portion 61 that is insertably and removably inserted into the second large-diameter portion 22a, and the small-diameter portion 2 of the connection port 22 that is integrally and concentrically provided inside the large-diameter outer pipe portion 61 via a plurality of ribs
Inner tube portion 6 with a small diameter that is insertably and removably inserted into 2b
2 and the two pipe parts 6 in opposite directions so as to face each other.
1 and 62 have a pair of left and right pivot tube portions 63 that are provided so as to project substantially at right angles to the axial direction. A pair of pivot tube parts 63
Has a cylindrical shape, and a flange 63a continuous in the circumferential direction is integrally provided on the open front end edge thereof.

One end of the outer pipe portion 61 is open, and the other end is individually communicated with the pivot pipe portion 63 through a pair of communication ports 64. The tip of the pivot tube portion 63 is open,
The rear end is closed by the inner pipe portion 62. An annular seal member 65 such as an O-ring made of synthetic rubber is attached to the outer peripheral surface of the outer pipe portion 61. As shown in FIG. 3, the outer pipe portion 61
Is a flange portion 61a that integrally projects from the outer peripheral surface thereof.
Is fitted inside the large-diameter portion 22a until it hits the tip of the large-diameter portion 22a of the connection port 22. In the connected state by this fitting, the airtightness between the large diameter portion 22a and the outer pipe portion 61 is ensured by the sealing material 65, and the inner and outer pipe portions 6 are
The flow path portion between 1 and 62 is communicated with the reflux chamber 26 through the ventilation hole 22c. A lock mechanism (not shown) is provided on the connection port 22 side, and the claw of this mechanism is used for the outer pipe portion 61.
By hooking on the recess 61b provided on the outer peripheral surface of
The suction port body 13 is prevented from being detached from the connection port 22, and the detachment stopper can be removed for maintenance or the like.

Both axial ends of the cylindrical inner tube portion 62, which is longer than the outer tube portion 61, are open. The inner pipe portion 62 fitted in the small diameter portion 22b along with the attachment of the communication pipe 51 to the connection port 22 guides air containing dust into the dust collecting bag 31.

The opening at the tip of the inner pipe portion 62 protruding outside the connection port 22 is an inlet 62 provided between the pivot pipe portions 63.
The inlet upper wall 66 and the inlet lower wall 67 respectively project outward at the upper and lower edges thereof. The pair of left and right inlet end side walls 62b that form the boundary between the inlet 62a and the pair of pivot tube portions 63 have a distance between their facing surfaces that is upstream from the inner tube portion 62 in the air suction direction (see an arrow indicated by a dashed line in FIG. 8). It is formed in a slanted shape so as to spread. This structure reduces wind loss and allows the air to smoothly enter the inlet 62.
It is excellent in that it can be sucked into a.

As shown in FIGS. 4 to 7, the suction port body main part 52 includes a main part upper case 71, a main part lower case 72, and a main part lower case 72.
It is formed by connecting a main part middle case 73 sandwiched between these by screwing.

A pair of bearings 74 having semicircular recesses on the inner surfaces of the upper and lower cases 71 and 72 of the main section on the rear side of the main section middle case 73 (only the main section lower case 72 side is shown in FIG. 6) are integrally projectingly provided, and the respective pivot tube portions 63 are rotatably connected by being sandwiched from above and below by the upper and lower bearing portions 74 which are fitted to each other. With this connection structure, the communication pipe 51 is pivotally attached to the rear portion in the central portion in the width direction of the suction port body main part 52 so as to be rotatable up and down, and by this rotation, the suction port body main part 52 is covered. You can get a proper posture for the cleaning surface. The relative rotation of the communication pipe 51 and the suction port body main part 52 is restricted by the inlet lower wall 67 and an upward stopper part 75 provided in the main part lower case 72 between the bearing parts 74 thereof. During the rotation, the mating surfaces of the flange portion 63a and the bearing portion 74 are in sliding contact with each other. In FIG. 8, P indicates the center of rotation between the communication pipe 51 and the suction port body main portion 52.

A blow-out chamber 81 is provided in the main portion 52 of the suction port body.
And a recovery chamber 82 below the blowing chamber 81, and the main middle case 73 forms a partition wall between the chambers 81 and 82. The blowout chamber 81 includes a rib 83 (see FIG. 4) projectingly provided on the inner surface of the main part upper case 71 and the main part lower case 7.
2 and the mating surfaces of the ribs 84 (see FIGS. 5 and 6) protruding from the inner surface of the rib 2 are fitted to each other by projections and depressions.
Rib 8 projectingly provided on the inner surface of the upper case 71 of the main part.
5 (see FIG. 4) and ribs 86 (see FIG. 5) projectingly provided on the upper surface of the main part middle case 73 are partitioned by fitting the mating surfaces into each other. The other ribs 87 to 90 shown in FIGS. 4 to 6 surround one side and the front side of the blowout chamber 81, and these ribs are provided in each of the cases 71 to 73 similarly to the ribs 83 to 86. . The front portion of this enclosure has substantially the same shape as an intake port 91 described later, and is formed right above the intake port 91.

The recovery chamber 82 is divided into a main case lower case 72 and a main section middle case 73.
The mating surfaces of 73 are fitted into each other by projections and depressions. An intake port 91 is formed in the bottom wall 72a of the lower main case 72 so as to face the recovery chamber 82, as shown in FIGS. The intake port 91 is formed as a rectangular opening extending in the width direction of the intake port body 13 (left-right direction in FIGS. 4 to 7). As shown in FIG. 7, the bottom wall 72 of the main part lower case 72
A fixed brush 92 is attached to a along the rear edge of the intake port 91. The brush 92 is also used as a windproof means for preventing the air blown to the surface to be cleaned through the air intake port 91 from blowing backward toward the suction port body 13.

As shown in FIG. 8, the rear end portion in the widthwise central portion of the main portion middle case 73 is bent upward to be fitted into the inner surface of the main portion upper case 71 in a concavo-convex manner, and this bent portion. An arcuate portion 73a is formed on the. The arcuate portion 73a is the inlet 62 of the communication pipe 51.
It is arranged to face the front side of a. The main portion lower case 72 is provided with a guide 93 having a circular arc surface continuous from both ends in the width direction of the circular arc portion 73a. The arcuate portion 73a and the guide 93 which are continuous with each other guide the movement of the arcuate shutter 94. The shutter 94, which is reciprocally moved in association with the raising / lowering operation of the communication pipe 51 with respect to the suction port body main portion 52, is provided over the communication pipe 51 and the suction port body main portion 52, and is provided inside the rear edge portion 94a. The upper wall 66 of the inlet of the communication pipe 51 is hooked.

Therefore, as shown in FIG. 8, the shutter 94 is pulled by the inlet upper wall 66 and is pulled by the inlet upper wall 66 when the communication pipe 51 is in the use posture in which the communication pipe 51 is inclined with respect to the suction port main body 52, as shown in FIG. As shown in FIG. 3, the rear edge portion 94 is disposed in the open position shown in FIG. 3 and is in a posture in which the communication pipe 51 has a right angle with respect to the suction port body 52 when not in use.
The inner pipe portion 62 hits a and is pushed by this pipe portion 62 to be placed in the closed position. When the shutter 94 is in the open position, the air passage cross-sectional area in the suction air passage B immediately before the inlet 62a is the maximum, and when the shutter 94 is in the closed position, the air passage cross-sectional area is the smallest in the immediately preceding position. (Shutter 94
Includes a state in which the air passage cross-sectional area becomes zero by hitting the bottom wall 72. ) Is set. As described above, the shutter 94 that interlocks when the communication pipe 51 rises above a certain angle is provided to limit the cross-sectional area of the air passage. Even if the electric blower 35 is operating when the vehicle is placed in an independent posture, the amount of air circulating through the suction port body 13 is drastically reduced, so that the rotation of the rotary cleaning body 53 can be significantly reduced or stopped automatically. It is excellent in being able to do it.

The front portion of the recovery chamber 82 is located directly above the intake port 91 and communicates with this port 91. Collection room 82
The rear part is narrowed so as to be converged at the center part in the width direction and slightly extends rearward, and the extending rear part faces and communicates with the inlet 62a of the inner pipe part 62 of the communication pipe 51. The recovery chamber 82 and the inner flow passage of the inner pipe portion 62 form a suction air passage B communicating with each other. The air blown into the recovery chamber 82 toward the intake port 91 through the air passage B and the air sucked from the surface to be cleaned into the intake port 91 are sucked into the cleaner body 12 side. It has become.

As shown in FIGS. 6 to 8, the rotary cleaning body 53 includes a core shaft 101 made of metal such as extrusion mold material of aluminum alloy or made of hard synthetic resin, and the shaft 101.
Sleeve-shaped blade base 10 attached to the outer peripheral surface of the blade
2 and a plurality of V-shaped blades 103 as cleaning members provided on the outer peripheral surface of the base 102 at equal intervals along the circumferential direction. Support shaft supports 105 are connected to both ends of the core shaft 101 by being fitted and fixed to these ends, and support shafts 104 projecting from the supports 105 are rotatable. A bearing 106 for supporting the bearing is attached. Therefore, the rotary cleaning body 53 is configured so that the portions other than the bearings 106 at both ends thereof are rotated integrally.

The cylindrical blade base 102 and each V-shaped blade 103 extending over substantially the entire length of the core shaft 101 are integrally molded, and are made of synthetic resin such as rubber or soft vinyl chloride. Each of the blades 103 that are provided radially with respect to the blade base 102 and that are parallel to each other is provided with the core shaft 1 as shown in FIGS.
01 from both ends toward the central portion in the longitudinal direction of the core shaft 101, and
Are continuous at the center in the longitudinal direction.

Each blade 103 has a blade base 10
2 has a substantially V-shape along the peripheral surface thereof, and the V-shape has a rear side of the suction port body 13 in which both ends of the V-shape have communication pipes 51 when viewed from above as shown in FIG. And the top of the V-shape is on the front side of the suction port body 13, that is,
It is provided so as to move away from the inlet 62a of the communication pipe 51 to the front side. Therefore, in each V-shaped blade 103 that has been moved to the front side of the rotary cleaning body 53, the top of the V-shape faces downward when viewed from the front side of the suction port body 13, and both ends of the V-shape face diagonally upward. Is formed in. Therefore, each blade 103 is provided in a V-shaped structure in which the V-shaped apex thereof is on the leading side in the rotation direction from the both ends of the slanted shape. Further, each blade 103 is provided such that the V-shaped apex of the blade 103 adjacent to the rear side in the rotation direction of the rotary cleaning body 53 is in contact with or intersects with a straight line connecting both ends of the V-shape.

The rotary cleaning body 53 having the above-mentioned structure is used for the bearing 1 thereof.
By attaching the 06 to the bearing holding portions (not shown) provided at both ends in the width direction of the lower case 72 of the main portion, the collecting chamber 82 faces the intake opening 91 in a posture parallel to the intake opening 91.
It is located in. When the rotary cleaning body 53 is rotated, the tip of the V-shaped blade 103 passes through the intake port 91 and contacts the surface to be cleaned. The V-shaped top portion of each blade 103 located at the central portion in the axial direction of the rotary cleaning body 53 housed in the recovery chamber 82 has the inlet 6 of the communication pipe 51.
It faces 2a. In FIG. 6, the dimension G is the inlet 62a.
Showing the V-shaped top area of each blade 103 facing
H indicates the range of both ends of the V-shaped slanted shape of each blade 103 that does not face the inlet 62a of each blade 103.

A bottom lid 109 is attached to one end of the main body lower case 72 in the width direction so as to be attached / detached by rotating the lock knob 108 as shown in FIG. 7 to open one end of the intake port 91 in the width direction. Accordingly, the rotary cleaning body 53 is attached from the lower side of the suction port main body 52 with the attachment and detachment of the bottom lid 109. That is, with the bottom cover 109 removed, the rotary cleaning body 53 is attached to one of the support shaft supports 10
The first bearing 106 on the fifth side is passed through the intake port 91 from the lower side, and the one bearing 106 is inserted into and held by one bearing holding portion (not shown). The other bearing 1 on the side of the other supporting shaft support 105 while being accommodated in the lower case 72 of the main part through the 91.
06 is held by a bearing holding portion (not shown) formed in the main body lower case 72, and finally, the bottom cover 109 is attached to the main body lower case 7.
2, the other bearing 106 is held between the bottom lid 109 and the other bearing holding portion. The rotary cleaning body 53 is attached by the above procedure.

The rear portion of the blowout chamber 81 is shown in FIGS.
As shown in FIG. 5, the pivot pipe portion 63 of the communication pipe 51 is arranged, and the blowout chamber 81 and the flow path between the inner and outer pipe portions 61 and 62 of the communication pipe 51 are connected via these pipe portions 63. ing. As described above, the front part of the blowout chamber 81 faces the main part middle case 73, and the reflux blowout port 54 penetrates through the main part middle case 73 to the width direction of the suction port body main part 52. It is formed along. The recirculation blowout port 54 provided with the rotary cleaning body 53 placed between the intake port 91 blows the air in the blowout chamber 81 onto the V-shaped blade 103 from above, and the suction port body 13 is moved forward. The rotation direction F of the rotary cleaning body 53 that is rotated when being pushed to (see FIG. 8).
(See reference) is defined as the forward direction, the rotary cleaning body 53 is positioned in front of the core shaft 101 so that the forward rotation can be obtained. Therefore, the recirculation outlet 54 is displaced from the central axis of the rotary cleaning body 53 to the front side, and the main middle case 7 is removed.
It is opened in 3. The shift dimension to the front side is S in FIG.
Indicate.

The return air outlet 54 is the main portion 52 of the suction inlet body.
Is formed by a slit continuously extending in the width direction of the rotary cleaning body 53, and is provided parallel to the axis of the rotary cleaning body 53. The reflux outlets 54 are arranged in the same manner in the widthwise direction of the main body 52 of the suction inlet centering on the communication pipe 51. The reflux outlet 54 may be formed by a plurality of discontinuous holes or the like, and in this case as well, it may be provided so as to be divided into the left and the right as in the present embodiment. The central portion of the reflux outlet 54 in the longitudinal direction faces the top of the V-shaped blade 103 having the width shown by the dimension G, and the longitudinal end portions of the reflux outlet 54 connected to both sides of the central portion are in the longitudinal direction. V-shaped blade 10 having the width indicated by the dimension H
It opposes the diagonally twisted ends of 3. Although the reflux outlet 54 of the present embodiment is shorter than the core shaft 101, the reflux outlet 54 can be provided to face the V-shaped blade 103 over a range of substantially the same length as the blade 103. .

In the above structure, the flow passage between the inner and outer pipe portions 61 and 62 of the communication pipe 51, the inner flow passage of the pivot pipe portion 63, and the blowout chamber 81 of the main inlet body 52 communicate with each other in this order. The return air passage A is formed, and the electric blower 3
The air discharged from 5 is guided to the return outlet 54 by the return air passage A, and passes through the outlet 54 to the intake port 9
It is set back to 1.

In the figure, 111 is a bumper mounted along the front outer surface of the main body 52 of the suction port body, 112 is a front wheel mounted on the lower case 72 of the main part, and 113 and 114 are rear wheels.

Next, the operation of the air circulation type vacuum cleaner 11 provided with the suction port body 13 having the above construction will be described. As shown in FIG. 1, this electric vacuum cleaner 11 has a connection pipe 22 of a suction port body 13 inserted and connected to a connection port 22 of a cleaner body 12 and a power cord rewound from a cord reel 40. Power the electric blower 35, and the blower 35
It is used by moving the vacuum cleaner 11 as a whole through the handle 14 while driving the vehicle and bringing the suction port body 13 into contact with the surface to be cleaned.

During this use, the dust contained in the suction air (indicated by the dotted arrow in FIGS. 1 and 8) which is guided to the suction air passage B of the suction port 13 and flows into the dust collecting bag 31. The air captured by the dust collecting bag 31 and passing through the dust collecting bag 31 further passes through the filter support 32 and the electric blower 3
5 is discharged into the recirculation chamber 26 through the air outlet 41 of the motor cover 39, and a part thereof passes through the exhaust small hole (not shown) and the exhaust chamber 24 and the exhaust port (not shown). And is discharged to the outside of the cleaner body 12.

The exhaust gas flowing into the return chamber 26 is connected to the connection port 22.
Is guided to the return air passage A of the suction port body 13 from the ventilation hole 22c and is blown from the return air outlet 54 to the collection chamber 82 side of the suction air passage B toward the intake port 91, for example. Such an air flow is shown by a solid arrow in FIGS. Therefore, the blown air is blown to the V-shaped blade 103 of the rotary cleaning body 53 rotatably arranged immediately below the recirculation outlet 54 to rotate the cleaning body 53 clockwise in FIG. Immediately after that, after being blown to the surface to be cleaned facing the intake port 91, the dust on the surface to be cleaned is lifted and sucked into the recovery chamber 82 through the intake port 91 and collected in the suction air passage B. It Then, along with this collection, the dust is collected in the dust collecting chamber 23 of the cleaner body 12.

As the air discharged from the electric blower 35 is thus collected and circulated by the suction port 13,
With that momentum, the outside air between the bottom wall 72a of the suction port body 13 and the surface to be cleaned is sucked into the suction port 91 together with the dust, and the rotary cleaning body 53 is rotated using the circulating air. The V-shaped blade 103 can perform dust removal on the surface to be cleaned while performing air circulation type cleaning.

By the way, as described above, the V-shaped blade 1
Numeral 03 is provided continuously over substantially the entire length of the rotary cleaning body 53, and the recirculation outlet 54 for blowing recirculation air to these blades 103 is continuously extended in the width direction of the suction port main body 52. Because it is provided in
In the air circulation type cleaning, the recirculating air blown out from the recirculation outlet 54 can be blown to any part of the V-shaped blade 103 without interruption. In this way, by rotating the rotary cleaning body 53 while changing the position of the recirculation air blown onto the V-shaped blade 103, fluctuations in the rotation torque and the rotational speed of the rotary cleaning body 53 are suppressed, and the rotary cleaning body is rotated. The rotation cleaning body 53 can be smoothly rotated by suppressing the rotation irregularity of 53.
The uneven rotation is suppressed in this way, and the rotary cleaning body 5
Since 3 rotates smoothly, noise generation due to the rotation of the cleaning body 53 can be reduced.

Moreover, since the reflux outlet 54 faces the V-shaped top portion of the V-shaped blade 103, the downward top portion of the V-shaped blade 103, in other words, V when viewed from the front side of the suction port body 13. The circulating air can be directly blown from the upper side to the dead end portion on the downstream side in the twisting direction of the V-shaped blade 103. As a result, the air blown on the V-shaped blade 103 is suppressed from flowing in both end directions along the longitudinal direction of the blade 103.
As a result, the rotational energy for rotating the rotary cleaning body 53 can be increased by effectively utilizing the flow energy of the air blown on the V-shaped blade 103.

As described above, it is possible to improve the rotational performance of the rotary cleaning body 53 by increasing the rotational torque of the rotary cleaning body 53 in addition to suppressing the rotational irregularity. Then, as the rotation unevenness is suppressed, the V-shaped blade 1
Since the scraping performance of the dust on the surface to be cleaned by 03 can be improved, the scraping performance of the dust on the surface to be cleaned by the V-shaped blade 103 can be improved together with the improvement of the rotation torque.

Further, as the rotation unevenness is suppressed, the flow of air collected around the rotary cleaning body 53 to the electric blower 35 side is less disturbed, so that the rotary cleaning body 53 faces. It is possible to enhance the suction performance of the outside air containing dust passing through the intake port 91.

Moreover, the recirculation outlet 54 blows the circulating air onto the V-shaped blade 103 from above to rotate the rotary cleaning body 53, so that the air immediately after being blown onto the V-shaped blade 103 is blown. The dust on the surface to be cleaned can be lifted by spraying the surface to be cleaned from above. In addition, the recirculation outlet 54 is continuously provided in the main inlet 52 of the inlet body so as to extend in the width direction of the main portion 52, so that the dust floating range due to the air blown from above the surface to be cleaned is increased. Since it is possible to secure a long length in the width direction of the suction port body main portion 52, it is possible to improve the dust floating performance by the air blown onto the surface to be cleaned from above.

Therefore, as described above, the rotary cleaning body 53
Since the rotation performance, the suction performance of the outside air from the intake port 91, the dust lifting performance of the surface to be cleaned, and the dust lifting performance of the surface to be cleaned are improved, respectively, the suction port body 13 in the air circulation type cleaning is improved. The dust absorption performance of can be improved.

Further, the V-shaped blade 10 of the rotary cleaning body 53
Since 3 is the configuration described above, the rotary cleaning body 53 rotated by the air blown from the recirculation outlet 54 has a V-shaped blade 103 whose V-shaped top portion precedes both V-shaped diagonal end portions. Then it is rotated. Therefore, the inlet 6 of the communication pipe 51
On the rear side of the rotary cleaning body 53 facing the 2a, the air blown to the rotary cleaning body 53 and flowing from the front side to the rear side of the cleaning body 53, the adjacent V-shaped blade 10
The inside of the V-shaped groove portion 103a between the three is used as a passage and is sucked into the inlet 62a of the communication pipe 51 through this passage.

By utilizing the flow of the air guided by the V-shaped groove portion 103a in this way, the dust scraped from the surface to be cleaned by the V-shaped blade 103 is moved from the both end sides of the rotary cleaning body 53 to the central portion side. Can be made. Thereby,
The dust that has been scraped from the surface to be cleaned at both ends in the longitudinal direction of the rotary cleaning body 53 can be easily and reliably provided by the transportation force of the air that flows so as to immediately suck the dust toward the inlet 62a through the V-shaped groove 103a. Can be sucked into the communication pipe 51.

Moreover, the inlet 62a of the communicating pipe 51 disposed in the widthwise central portion of the main body 52 of the suction inlet is provided with the blade 10
Since it is opposed to the V-shaped top of No. 3, V-shaped groove 10
It is possible to easily and smoothly suck dust collected by guiding the inside of 3a toward the central portion of the rotary cleaning body 53 in the axial direction to the inlet 62a to realize the air circulation type cleaning. Also in improving the suction performance of dust into the inlet 62a of the communication pipe 51 as described above, the dust suction performance of the suction inlet body 13 in the air circulation type cleaning can be improved.

Further, the air blown from the recirculation outlet 54 to the V-shaped blade 103 by the twisting direction of the V-shaped blade 103 is collected in the central portion of the rotary cleaning body 53 in the axial direction as described above, and is rotated. The air that goes around the lower side of the cleaning body 53 and is sucked into the inlet 62a of the communication pipe 51 together with the outside air containing dust also rotates the cleaning body 5 as described above.
V-shaped blade 1 because it is gathered in the central part in the axial direction of 3
The air blown on 03 is suppressed from blowing out from both ends of the blade 103. It should be noted that this suppression of blowout can be similarly obtained even if the return blowout port 54 has substantially the same length as the blade 103.

Therefore, the rotary cleaning body 53 as described above.
As the air is suppressed from being blown out from both ends in the axial direction, the air is blown out from the both ends in the longitudinal direction of the intake port 91 to the outside in the width direction of the suction port body 13, and on the surface to be cleaned in the same direction. It is possible to suppress the airborne dust and the like from being blown out to the surroundings, and as the circulating air is suppressed from leaking to the outside at the suction port body 13, a large amount of circulating air is secured and efficiently circulates. Can be cleaned.

The suction inlet 13 provided in the electric vacuum cleaner 11 for air circulation type cleaning as described above has the recirculation outlet 54 provided at the center of the suction inlet main portion 52 in the width direction. Since the V-shaped blades 103 are equally distributed in the direction in which the communication pipe 51 extends, the flow of air from the reflux outlet 54 to the inlet 62a of the communication pipe 51 is in the longitudinal direction of the rotary cleaning body 53. The V-shaped blade 1 of the rotary cleaning body 53 does not deviate to one end side.
The air is blown from the recirculation outlet 54 to the longitudinal middle portion of 03, and the load applied to the rotary cleaning body 53 by the air blowing on the V-shaped blade 103 is the same at both longitudinal ends of the rotary cleaning body 53. You can Therefore, the rotary cleaning body 5
3 can be smoothly rotated, and both bearings 1
Since the load on 06 is evenly distributed and the one bearing 106 is prevented from prematurely wearing on the other bearing 106, the rotary cleaning body 53 can be used even for a long period of time.
Smooth rotation performance can be maintained with less risk of rattling.

Further, as described above, since the circulation outlets 54 are provided in the widthwise direction of the main body 52 of the inlet body with the communication pipe 51 as the center, the opening area of the outlet 54 is reduced. It is possible to secure a large size as compared with the case where the reflux outlet 54 is provided so as to face only one end portion of the rotary cleaning body 53, and since the reflux outlet 54 is formed by the slit, a larger opening area can be secured. Thereby, the air resistance at the recirculation outlet 54 is reduced, and the circulating air easily flows, so that the back pressure on the electric blower 35 that circulates the air can be reduced, and accordingly, the reduction in the blowing performance of the electric blower 35 can be suppressed. In addition to the above, the amount of air blown to the V-shaped blade 103 is increased, and the ability to smoothly rotate the rotary cleaning body 53 can be improved.

Further, in the first embodiment, the rotation direction of the rotary cleaning body 54 rotated by the air blown out from the recirculation outlet 54 and the rotation cleaning when the main inlet body 52 is advanced. Since the rotation direction of the body 54 is the same, when the suction port body main portion 52 is advanced along the surface to be cleaned, the rotary cleaning body 54 rotated by the force of the air blown out from the recirculation outlet 54. Rotation of the suction inlet body 5
It can help move forward two. In addition, the reflux outlet 54
Of the V-shaped blade 103 blows the circulating air toward the V-shaped blade 103 moved to the upper part of the rotary cleaning body 53, so that the blade 103 moved to the upper part of the rotary cleaning body 53 is circulated. While receiving the air and generating the rotational force, the V-shaped blades 103, 103 moved to the lower portion of the rotary cleaning body 53 scrape out the dust on the surface to be cleaned. Therefore, since the circulating air is not blown to the blade 103 moved to the lower portion, the V-shaped blade 103 moved to the lower portion may escape from the surface to be cleaned by the force of the blown air. It is possible to prevent the performance of scraping off dust on the surface to be cleaned from being bent.

The present invention is not limited to the above embodiment. For example, the reflux outlet 54 may be provided so as to face only the top portion of the V-shaped blade 103, or may be provided so as to face only the oblique ends of the V-shaped blade 103. And in the latter case,
Air circulated to the slanted end portions of the V-shaped blade 103 when viewed from the front side of the suction port body 13 can be blown from above or the like. Therefore, this air is connected to the slanted end portions of the V-shaped blade 103. Of the V-shaped blade 103, in other words, can be guided and sprayed to the dead end portion on the downstream side in the twisting direction of the V-shaped blade 103. Therefore, as in the first embodiment, the rotation performance of the rotary cleaning body 53 by the air blown on the V-shaped blade 103 can be improved, and
Air blown to the V-shaped blade 103 is prevented from flowing out from the longitudinal end side of the rotary cleaning body 53,
It is possible to prevent air from blowing out from the intake port 91.

The present invention can also be applied to a canister type or upright type air circulation type vacuum cleaner. Further, in the present invention, the V-shaped cleaning member 103 of the rotary cleaning body 53 is
The bristles may be formed in a V-shaped row and continuously arranged.

[0079]

[0080]

The present invention is carried out in the form as described above, and has the following effects.

According to the suction port body for an air circulation type vacuum cleaner according to the present invention, the performance of lifting dust on the surface to be cleaned by the air blown from the recirculation outlet.
Together is enhanced by the transport force of air through the V-shaped groove between the V-shaped cleaning member of dust scraped out by V-shaped cleaning member rotating cleaning body, easily lead to the inlet side of the communication pipe Since it can be sucked in, the dust absorption performance can be improved.

According to the air circulation type electric vacuum cleaner of the fifth aspect of the present invention, since the suction port body according to any one of the first to fourth aspects is provided, there is an effect that the dust suction performance can be improved.

[0083]

[0084]

[Brief description of drawings]

FIG. 1 is a perspective view schematically showing a configuration of an entire upright type air circulation type vacuum cleaner according to a first embodiment of the present invention with a part thereof cut away.

FIG. 2 is a cross-sectional view showing a cleaner body and a suction port body of the electric vacuum cleaner according to the first embodiment.

FIG. 3 is an enlarged cross-sectional view showing a structure around a suction port body of the electric vacuum cleaner shown in FIG.

FIG. 4 is a plan view showing the configuration of the suction port body shown in FIG.

FIG. 5 is a plan view showing the structure of the suction port body shown in FIG. 3 with a main part upper case removed and a part thereof shown in section.

FIG. 6 is a plan view showing the structure of the suction port body shown in FIG. 3 with a main part upper case and a main part middle case removed and a part of the cross section shown in section.

FIG. 7 is a bottom view showing the configuration of the suction port body shown in FIG.

FIG. 8 is a sectional view taken along line ZZ in FIG.

9A is a side view showing a communication pipe provided in the suction port body shown in FIG. 9B is a cross-sectional view taken along the line YY in FIG. (C) is a front view showing a partial cross section of a communication pipe provided in the suction port body shown in FIG. 3.

[Explanation of symbols] 11 ... vacuum cleaner, 12 ... Vacuum cleaner body, 13 ... Suction mouth, 31 ... Dust bag (filter), 35 ... Electric blower, 51 ... communication pipe, 52 ... Suction mouth main part, 53 ... rotary cleaning body, 54 ... reflux outlet 61 ... Outer pipe part, 62 ... Inner tube portion, 62a ... inlet of the inner pipe section, 63 ... Axis tube part, 71 ... upper case of main part, 72 ... Main subordinate case, 73 ... Main case middle case, 82 ... collection room, 83 ... Blowout room, 91 ... Intake port, 91a ... the end of the intake port, 101 ... Core axis, 102 ... blade base, 103 ... V-shaped blade, 103a ... V-shaped groove, 104 ... a supporting shaft, 105 ... Support shaft support, 106 ... Bearing, A ... Return airway, B ... Suction path.

Front page continuation (58) Fields surveyed (Int.Cl. ⁷ , DB name) A47L 9/08 A47L 5/14

Claims (5)

(57) [Claims] 1. An air blower built into a cleaner body is sucked in by an operation of an electric blower to capture dust, and the air discharged from the electric blower through the filter is collected and circulated. In a suction port body provided in an electric vacuum cleaner for cleaning, a suction port body main part having an intake port for sucking air on the surface to be cleaned with the circulation of the air, and a suction port body part provided in the main part A communication pipe communicating with the main body of the cleaner and a part of the communication pipe facing the inlet of the communication pipe
Installed rotatably inside the main body of the suction mouth facing the mouth.
And a plurality of V-shaped cleaning portions on the outer peripheral surface.
Has a material over substantially the entire length of the rotary cleaning body.
The V-shaped top of the cleaning member is the leading side in the rotation direction.
At the same time, the dust scraped by the V-shaped cleaning member
The V-shape with adjacent V-shaped grooves leading to the inlet side of the communication pipe
The rotary cleaning member formed between the cleaning members , and the rotary cleaning member is placed between the intake port and the suction member.
It is provided in the main body of the mouth and is located above the V-shaped cleaning member.
From the above-mentioned circulating air,
So that the blown air is blown onto the surface to be cleaned from above.
A suction inlet body comprising: a reflux outlet displaced to the front side from the axis of the rotary cleaning body. 2. The suction port body according to claim 1, wherein an inlet of the communication pipe is opposed to a V-shaped top portion of the cleaning member. 3. The suction port body according to claim 1, wherein the reflux outlet is opposed to at least a V-shaped top portion of the cleaning member. 4. The suction port body according to claim 1, wherein the recirculation outlet port is opposed to at least both ends of the V-shaped cleaning member. 5. The electric blower in the cleaner body is operated to suck in air on the surface to be cleaned from the suction port of the suction port body, the sucked air is passed through a filter to capture dust, and the air is passed through the filter. returning the air discharged from said electric blower to said inlet Te, in an electric vacuum cleaner to perform cleaning while the returned air collected is circulated, either the suction port body of the claims 1-4 An air circulation type vacuum cleaner having the suction mouth according to item 1.