JP2000189362A - Suction port body and vacuum cleaner - Google Patents

Abstract

(57) [Summary] An object of the present invention is to provide an air circulation type suction port body that can easily suck in dust with a simple structure. A communication pipe (51) is provided in a suction port main part (52) having a suction port (91) for sucking air on a surface to be cleaned along with the circulation of air. The rotary cleaning body 53 having a plurality of blades (cleaning members) 102 on the outer peripheral
1 and rotatably mounted in the main part 52. A slit-shaped recirculation outlet 54 for blowing circulating air downward to a blade 102 positioned above the rotary cleaning body 53, a communication pipe 51 on the opposite side of the rotary cleaning body 53, and a rotary cleaning body.
It is provided in the main part 52 above the position 53. As a result, the cleaning body 53 itself blocks the flow of air that is about to be directly sucked into the communication pipe 51 from the return outlet 54, and effectively blows the circulating air to the blade 102 to rotate the cleaning body 53. It is characterized by having.

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, in which air is sucked from an air inlet of a suction opening body, the sucked air is passed through a filter, dust is captured, and the air passes through the filter. The present invention relates to an air circulation type vacuum cleaner for returning air discharged from an electric blower to an air inlet, recovering the returned air, and performing cleaning while circulating the air, and a suction port body provided in the vacuum cleaner.

[0002]

2. Description of the Related Art FIG.
No. 0 describes a suction opening for an air-circulating vacuum cleaner. The suction opening body includes a rotary cleaning body 3 having a plurality of blades 1 mounted on the outer peripheral surface of the suction opening body via a pivot 2 so that the blade 1 can be turned upside down. A communication pipe 5 is provided on the side. The inside of the communication pipe 5 is partitioned by a partition wall 6 into an upper recirculation trachea 5a and a lower suction trachea 5b. The front partition part 6a of the partition wall 6 extends along the rear lower peripheral surface of the rotary cleaning body 3. Inlet 7
Is extended to the side.

According to the suction port having the above-described structure, the air introduced from the electric blower side of the cleaner body (not shown) is supplied to the outlet of the return air pipe 5a, that is, the return air facing the rear upper peripheral surface of the rotary cleaning body 3. Since the rotating cleaning body 3 is blown from the outlet 5c, the blade 1 of the cleaning body 3 is raised by the wind pressure blown to the rotating cleaning body 3, and as the raised blade 1 receives the wind pressure, the rotating cleaning body 3 Rotated. With this rotation, each blade 1 hits the surface to be cleaned when it reaches the open lower surface of the suction port main body 4,
Next, the rotary cleaning body 3 is rotated so as to be stored on the peripheral surface thereof, faces the recirculation outlet 5c again, and continues the rotation of the rotary cleaning body 3. At the same time, the air flowing around the rotary cleaning body 3 is sucked into the air inlet 7 with the dust blown out from the surface to be cleaned by the blade 1. Therefore, air circulation cleaning can be performed.

[0004] As shown in the above publication, the structure of a suction opening for rotating a rotary cleaning body by blowing circulating air against a blade is composed of an electric motor, an air turbine, and an air turbine for rotating the rotary cleaning body. It is excellent in that a transmission mechanism from the like to the rotary cleaning body is unnecessary.

[0005]

However, as described above, in the conventional configuration in which the rotary cleaning body 3 is rotated by blowing air to the blade 1 from the communication pipe 5 on the rear side of the rotary cleaning body 3 as described above. The air blown from the recirculation outlet 5c is
In order to prevent the air from being sucked directly into the intake port 7 without hitting the air, the partition wall 6 must be provided with a leading end partition 6a to separate the recirculation outlet 5c from the intake port 7. Therefore, not only the configuration is complicated, but also
However, there is a problem that the dust interferes with the suction of dust into the intake port 7 and the suction performance is not good.

[0006] The first problem to be solved by the present invention is:
An object of the present invention is to provide a suction port body that can easily suck dust with a simple structure.

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

[0008]

According to the first aspect of the present invention, air sucked by an electric blower built in a cleaner body is passed through a filter to capture dust, and the dust is captured from the electric blower through the filter. It is assumed that a suction port provided in a vacuum cleaner that cleans while collecting and circulating the discharged air.

In order to solve the first problem, a suction port according to the invention of claim 1 has a suction port for sucking air on a surface to be cleaned with the circulation of the air. A main body of the suction port body, a communication pipe provided in the main section and communicating with the cleaner body side, and a cleaning member on an outer peripheral surface; A rotating cleaning body freely attached to the cleaning member, and the circulating air provided in the main portion of the suction opening body located on a side opposite to the communication pipe with the cleaning body as a boundary, and blowing the circulating air to the cleaning member to perform the rotary cleaning. And a recirculation outlet for rotating the body.

According to the first aspect of the present invention, the air discharged from the electric blower circulates through the suction port, and the air sucked together with dust on the surface to be cleaned from the suction port of the main portion of the suction port body. In this case, air can be cleaned by suction through the communication pipe into the main body of the cleaner, and the air returned to the main body of the suction body at that time is cleaned from the return outlet of the main part by the cleaning member of the rotary cleaning body. , The rotating cleaning body can be rotated with the spraying. Therefore, the air-circulating cleaning can be performed while scraping off the dust on the surface to be cleaned by the cleaning member of the rotary cleaning body.

The recirculation outlet for blowing the circulating air to the cleaning member is provided on the opposite side of the rotary cleaning body from the communication pipe, so that a part of the air discharged from the recirculation outlet is provided. Attempts to flow directly into the communication pipe can be hindered by the rotary cleaning member disposed between the reflux outlet and the communication pipe. Therefore, it is not necessary to provide a member for suppressing a part of the air blown out from the recirculation outlet directly into the communication pipe around the rotary cleaning body.

In carrying out the first aspect of the present invention, as in the second aspect of the present invention, the rotating direction of the rotary cleaning member rotated by the air blown out from the return air outlet is set to It is preferable to set the suction port body in the forward direction when the main body is advanced. In this way, when the main body of the suction port body is advanced along the surface to be cleaned, the main body of the suction port body is rotated by the rotation of the rotary cleaning body that is rotated by the force of the air blown from the return outlet. In addition, when the suction port body main part is pulled back along the surface to be cleaned and retreats, the direction of the force given by the rotation of the rotary cleaning body to the suction port body main part is Since the direction of movement of the main body of the suction opening body is opposite to that of the main body, the cleaning member is excellent in that the performance of removing dust from the surface to be cleaned is enhanced.

In carrying out the invention of claim 1 or 2, as in the invention of claim 3, which depends on these inventions,
The recirculation outlet may be provided on the opposite side of the rotary cleaning body from the inlet and so as to blow the circulating air downward toward the inlet. This way,
Since the air immediately blown downward from the reflux outlet and blown to the cleaning member of the rotary cleaning body is blown from directly above the surface to be cleaned to this surface, the air is oblique to the surface to be cleaned. As compared with the case where air is blown, the blown air is superior in that the action of lifting dust on the surface to be cleaned is large.

In practicing any one of the first to third aspects of the present invention, as in the invention of the fourth aspect dependent on these inventions, the recirculation outlet is formed of the cleaning member of the rotary cleaning body. Preferably, the circulating air is blown toward the cleaning member moved to the upper part. With this configuration, the cleaning member moved to the upper part of the rotary cleaning body receives the circulated air to generate a rotational force, while the cleaning member moved to the lower part of the rotary cleaning body removes dust on the surface to be cleaned. To scrape. Since the circulating air is not blown to the cleaning member moved to the lower portion, the cleaning member moved to the lower portion is partially bent away from the surface to be cleaned by the force of the blown air. Therefore, it is excellent in that it can suppress a decrease in the dust removal performance of the surface to be cleaned.

According to a fifth aspect of the present invention, the air on the surface to be cleaned is sucked from the suction port of the suction port by the operation of the electric blower in the cleaner body, and the sucked air is passed through the filter. It is assumed that an electric vacuum cleaner is configured to capture dust, return air discharged from the electric blower through the filter to the air inlet, and collect and return the returned air for cleaning while circulating. And in order to solve the said 2nd subject, the vacuum cleaner which concerns on the invention of Claim 5 WHEREIN: The said suction port body is the suction port body as described in any one of Claims 1-4. It is characterized by having done.

Therefore, this air-circulation type vacuum cleaner is provided with the suction opening according to the invention of any one of claims 1 to 4, whereby any one of the inventions of claims 1 to 4 described above is provided. The effect of the invention can be obtained.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 1 and 2, an upright air-circulating vacuum cleaner 11 according to the first embodiment includes a cleaner body 12, a suction opening 13, and a handle 14. .

The cleaner body 12 is formed by connecting a pair of left and right synthetic resin body cases 21 by screws or the like. A handle 14 is connected to one side of the upper end of the main body case 21 (the side that is the back side when used) via a pivotal portion 15. Handle 14 having operation switch 14a
1 is disposed at a use position that continuously extends above the cleaner body 12 during use, as shown in FIG. 1, and is folded by being pivoted downward about the pivot portion 15 when not in use when not in use. 12 are placed in non-use positions 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 13 connected thereto as described later, and the lower end of the handle 14 in the non-use position is in contact with the floor surface. When doing so, the cleaner body 12 is supported so that its self-standing posture is not impaired.

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

As shown in FIG. 2, the inner surfaces of the two main body cases 21 are integrally provided with required partitioning ribs, the leading ends of which are brought into contact with each other as they are connected. Inside is a lower dust collection chamber 23,
It is partitioned into an intermediate exhaust chamber 24, an upper reel housing 25, and a recirculation chamber 26 extending over the dust collection chamber 23 and the exhaust chamber 24. The dust collection chamber 23 located on the front side (upstream side with respect to the suction air) of the exhaust chamber 24 is opened on a surface that becomes the front side when the cleaner body 12 is used, and this opening is detachable at the lower part of the main body case 21. Case lid 27 attached to
It is closed more airtight.

As shown in FIG. 3, the oblique bottom wall 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 holder 30 that is rotated around a pivot 29 in the direction of the arrow E is attached. Filter mounting portion 28 and small diameter portion 22b of connection port 22
An annular rubber seal 20 for airtightly separating between them is interposed therebetween. This seal 20 integrally has a valve plate portion 20a that opens and closes a suction opening of a mouth frame described below. I have. The valve plate portion 20a is pulled by the suction negative pressure to open the suction opening, and is returned to a position where the suction opening is closed by its own elastic force with the disappearance of the negative pressure.

A dust bag 31 made of a paper pack as a filter which is housed in the dust collecting chamber 23 so as to be able to be taken in and out of the dust collecting chamber 23 has a flat plate-shaped opening frame 31a having a suction opening at a center portion, and a filter holder 30 for filtering. It is mounted on the mounting part 28 and housed in the dust collection chamber 23. A filter support 32 having a large number of elongated ventilation holes is accommodated in the upper part of the dust collection chamber 23, and the filter support 32 supports the dust collection bag 31 expanded with the cleaning operation.

An electric blower 35 is installed in the exhaust chamber 24 with its suction port facing the dust collection chamber 23. 36, 3
Reference numeral 7 denotes a vibration-proof motor supporting rubber fitted to both front and rear ends of the electric blower 35. The partitioning rib 38 located at the boundary between the exhaust chamber 24 and the dust collecting chamber 23 has an opening 38a facing the suction port, thereby passing through the dust collecting bag 31 in the dust collecting chamber 23. Air blower 35
Sucked into. In FIG. 2, reference numeral 45 is disposed 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 air (outside air) outside the cleaner body 12. This is a leak valve for introducing into the dust chamber 23.

The electric blower 35 includes an electric blower 35a and a motor cover 39 attached to the blower 35a. As shown in FIG. 2, the electric blower 35a
A commutator motor 35c, which is a component other than the blower such as the stator and the rotor, protrudes downstream of the blower 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 the operation of the electric blower 35, the air in the dust collection chamber 23 sucked into the centrifugal fan from the suction port is discharged from around the fan, and then guided into the inside of the fan cover while being guided by the inner surface of the fan cover. From the entrance of the department, and
While being made static by the diffuser, it flows out mainly toward the periphery of the commutator motor portion 35c and the like.

A motor cover 39 formed of a synthetic resin into a cup shape covers and conceals a portion of the blower 35b downstream of the diffuser. The opening edge of the cover 39 is fitted to the outer peripheral portion of the fan cover with the motor supporting rubber 36 for hermetically sealing the two covers therebetween. A plurality of small exhaust holes (not shown) communicating the inside of the motor cover 39 and the exhaust chamber 24 are formed in the peripheral wall of the motor cover 39, and an exhaust port (not shown) is formed in the main body case 21 so as to face the exhaust chamber 24. The exhaust area is much larger than the small exhaust hole.), And a predetermined amount of air with respect to the circulating air volume is exhausted to the outside of the cleaner body 12 by these exhaust paths to obtain a required intake performance. You can do it.

At the center of the bottom wall of the motor cover 39, the motor support rubber 37 is mounted so as to protrude from the outer surface thereof. The electric blower 35 having the motor cover 39
The exhaust chamber 24 and the reel accommodating section 25 are mounted with the motor supporting rubbers 36 and 37 fitted at both ends in the axial direction.
The partition ribs 38 are inserted between the partition ribs 21b and the partition ribs 38 which form the boundary of the above. As shown in FIG. 2, a code reel 40 for supplying power to the electric blower 35 is accommodated in the reel accommodating section 25.

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

Next, the suction port 13 will be described with reference to FIGS. The suction port body 13 includes a communication pipe 51 made of synthetic resin as a connecting part that communicates 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 path A and a suction air path B.

As shown in FIGS. 3, 8, and 9, the communication pipe 51, which is detachably fitted into and attached to the connection port 22, communicates with the cleaner body 12 side.
And a large-diameter outer tube portion 61 which is inserted and connected in the large-diameter portion 22a so as to be able to be inserted into and removed from the large-diameter portion 22a.
2b, a small-diameter inner tube portion which is inserted and connected so as to be able to be inserted and removed.
2 and both pipe sections 6
A pair of left and right pivotal tube portions 63 projecting substantially at right angles to the axial directions 1 and 62 are provided. A pair of pivot tube portions 63
Has a cylindrical shape, and a flange 63a which is continuous in the circumferential direction is integrally protruded from the open front end edge.

One end of the outer tube 61 is open, and the other end is individually connected to the pivot tube 63 through a pair of communication ports 64. The tip of the pivot tube portion 63 is open,
The back end is closed by the inner tube portion 62. An annular seal member 65 such as a synthetic rubber O-ring is attached to the outer peripheral surface of the outer tube portion 61. As shown in FIG.
Is a flange portion 61a integrally projecting from the outer peripheral surface thereof.
Is fitted inside the large-diameter portion 22a of the connection port 22 until it contacts the tip of the large-diameter portion 22a. In the connection state by this fitting, airtightness between the large-diameter portion 22a and the outer tube portion 61 is ensured by the seal material 65, and the inner and outer tube portions 6 are secured.
The channel portion between the first and the second 62 is communicated with the reflux chamber 26 via the vent hole 22c. A lock mechanism (not shown) is provided on the connection port 22 side.
By hooking on the recess 61b provided on the outer peripheral surface of
The suction port body 13 is prevented from coming off with respect to the connection port 22, and can be removed if necessary for maintenance or the like.

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

The opening at the distal end of the inner tube portion 62 protruding out of the connection port 22 is provided at an inlet 62 provided between the pivot tube portions 63.
The entrance upper wall 66 and the entrance lower wall 67 project outward from the upper and lower edges, respectively. The pair of left and right inlet end side walls 62b, which form a boundary between the inlet 62a and the pair of pivotal tube portions 63, have a distance between their opposing surfaces on the upstream side in the air suction direction with respect to the inner tube portion 62 (the dotted line in FIG. 8). It is formed obliquely so as to expand as it expands. This configuration reduces the windage and allows the air to enter smoothly.
It is excellent in that it can be sucked into a.

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

On the inner surfaces of the upper and lower cases 71, 72 on the rear side of the main case 73, a pair of bearings 74 having a semicircular recess (only the main case lower case 72 side is shown in FIG. 6 are integrally protruded from each other, and the respective pivot tube portions 63 are rotatably connected to each other by being vertically interposed between these upper and lower bearing portions 74. With this connection structure, the communication pipe 51 is pivotally attached to the rear part of the suction port body main part 52 so as to be vertically turned up and down, and by this rotation, the suction port body main part 52 is positioned with respect to the surface to be cleaned. The proper posture can be obtained. The relative rotation of the communication pipe 51 and the suction port main body 52 is regulated by the inlet lower wall 67 and the upward stopper 75 provided on the main lower case 72 between the bearings 74 thereof. When rotating, the flange portion 61a and the bearing portion 7
The mating surfaces with the members 4 are in sliding contact with each other. P in FIG.
1 shows the center of rotation of the suction port body main part 52.

The inside of the main body 52 of the suction port is provided with a blowing chamber 81.
And a recovery chamber 82 below the blowing chamber 81, and the main middle case 73 forms a partition between the two chambers 81 and 82. The blowing chamber 81 includes a rib 83 (see FIG. 4) protruding from the inner surface of the main part upper case 71 and a main part lower case 7.
2 and 3, a mating surface with a rib 84 (see FIGS. 5 and 6) protruding from the inner surface of the rib 2
Ribs 8 protruding from the inner surface of the upper case 71
5 (see FIG. 4) and ribs 86 (see FIG. 5) protruding from the upper surface of the main case 73 are fitted into each other so as to be fitted with each other. The other ribs 87 to 90 shown in FIGS. 4 to 6 surround one side and the front side of the blowing chamber 81, and are provided on each case 71 to 73 similarly to the ribs 83 to 86. . The front part of this enclosure has substantially the same shape as an intake port 91 described later, and is formed directly above the intake port 91.

The collection chamber 82 is divided into a main lower case 72 and a main middle case 73.
The mating surfaces of 73 are fitted with each other. As shown in FIGS. 6 to 8, an intake port 91 is formed in the bottom wall 72 a of the main lower case 72 so as to face the collection chamber 82. The intake port 91 is formed as a rectangular opening extending in the width direction of the intake port body 13 (the left-right direction in FIGS. 4 to 7). As shown in FIG. 7, the bottom wall 72 of the main lower case 72 is provided.
A fixed brush 92 is attached to “a” along the rear edge of the intake port 91. The brush 92 is also used as windproof means for suppressing the air blown to the surface to be cleaned through the air inlet 91 from flowing backward toward the rear of the air inlet 13.

As shown in FIG. 8, the rear end portion of the main portion middle case 73 at the center in the width direction is bent upward so as to be fitted into the inner surface of the main portion upper case 71 so as to be uneven. Is formed with an arc-shaped portion 73a. The arc-shaped portion 73a is connected to the entrance 62 of the communication pipe 51.
It is arranged facing the front side of a. The main lower case 72 is provided with a guide 93 having an arc surface that continues downward from both ends in the width direction of the arc portion 73a. The continuous arc portion 73a and the guide 93 guide the movement of the shutter 94 having an arc shape. A shutter 94 that is reciprocated in conjunction with the up / down operation of the communication pipe 51 with respect to the suction port main body 52 is provided over the communication pipe 51 and the suction port main body 52, and is provided inside the rear edge 94a. Is hooked on the entrance upper wall 66 of the communication pipe 51.

Therefore, the shutter 94 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. When the communication pipe 51 is in a posture at a right angle to the suction port body 52 at the time of non-use or the like when not in use, as shown in FIG.
The inner tube portion 62 a is pressed against the tube portion 62 and is disposed at the closed position. When the shutter 94 is in the open position, the cross-sectional area of the air path at the position immediately before the inlet 62a in the suction air path B is maximum, and when the shutter 94 is in the closed position, the cross-sectional area of the air path at the immediately preceding position is minimum. (Shutter 94
Includes a state in which the air passage cross-sectional area reaches zero when the bottom wall 72 is hit. ). Providing the shutter 94 that is linked when the communication pipe 51 rises at a certain angle or more, thereby restricting the cross-sectional area of the air passage, can be achieved by using the cleaner main body 12 as shown in FIGS. Even when the electric blower 35 is operating when the air blower 35 is placed in the self-standing posture, the amount of air circulating through the suction opening body 13 is drastically reduced, so that the rotation of the rotary cleaning body 53 can be automatically significantly reduced or stopped. Excellent in that it can.

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

As shown in FIGS. 6 to 8, the rotary cleaning body 53 has one or more blades 102 as a cleaning member attached to a rotary shaft 101 as a cleaning body.
Support shaft supports 103 and 104 at both ends of the rotating shaft 101
Are respectively fitted, and support shafts 105 protruding from the supports 103 and 104 are respectively supported by bearings 106. Therefore, the portions other than the bearings 106 at both ends of the rotary cleaning body 53 are integrally rotated. In the present embodiment, a plurality of blades 102 are provided, all of which are provided so as to extend in parallel with the rotation shaft 101. The rotating cleaning body 101 is recovered by facing the bearing 106 in a posture parallel to the intake port 91 by attaching the bearing 106 to a bearing holding portion (not shown) provided at both ends in the width direction of the main part lower case 72. It is arranged in a chamber 82. When the rotating cleaning body 53 is rotated, its blade 10
The distal end of the cleaning member 2 passes through the air inlet 91 and contacts the surface to be cleaned.

4 and FIG.
As shown in FIG. 2, the pivotal pipe portions 63 of the communication pipes 51 are arranged, and the blowout chamber 81 and the flow path between the inner and outer pipe portions 61 and 62 of the communication pipes 51 are communicated via these pipe portions 63. ing. The front part of the outlet chamber 81 faces the main part middle case 73 as described above, and the reflux outlet 54 penetrates the main part middle case 73 in the width direction of the suction port body main part 52. Are formed along. Since the main part middle case 73 is arranged above the lower half of the rotary cleaning body 53,
The recirculation outlet 54 provided therein is also provided above the lower half of the rotary cleaning body 53, that is, above the rotary cleaning body 53 in the present embodiment.

As described above, the recirculation outlet 54 provided with the rotary cleaning body 53 placed between the revolving cleaning body 53 and the air inlet 91 blows air in the air outlet chamber 81 downward toward the air inlet 91 to rotate. Blade 1 moved to the upper part of cleaning body 53
02, thereby rotating the rotary cleaning body 53. Then, the rotation direction F of the rotary cleaning body 53 that rotates when the suction opening body 13 is pushed forward (see FIG. 8).
) Is defined as the forward direction, so that the rotation in the forward direction can be obtained,
In other words, an opening is provided in the main case 73 at a position opposite to the communication pipe 51 with respect to the rotary cleaning body 53.

The return outlet 54 is formed by a slit extending continuously in the width direction of the inlet main body 52. Therefore, the return outlet 54 is provided in parallel with the axis of the rotary cleaning body 53. And the recirculation outlet 5
4 is preferably a communication pipe 5 in the width direction of the suction port main body 52.
They are distributed in the same manner with respect to 1. In the case of the present embodiment, the distribution dimensions (indicated by L1 and L2 in FIG. 5) are the same, but they may be slightly different.

In the above configuration, the flow path between the inner and outer pipe sections 61 and 62 of the communication pipe 51, the inner flow path of the pivot pipe section 63, and the blowout chamber 81 of the suction port main body 52 communicate with each other in this order. A return air path A is formed, and the electric blower 3
5 is guided to the return outlet 54 by the return air path A, and passes through the outlet 54 to the inlet 9.
It is to be returned to 1.

In the drawing, reference numeral 111 denotes a bumper mounted along the front outer surface of the suction port main portion 52, 112 denotes front wheels mounted on the main portion lower case 72, and 113 and 114 denote rear wheels.

Next, the operation of the air circulation type vacuum cleaner 11 having the suction port 13 having the above-described structure will be described. As shown in FIG. 1, the electric vacuum cleaner 11 is connected to the connection port 22 of the cleaner main body 12 with the communication pipe 51 of the suction port body 13 inserted and connected thereto. Power to the electric blower 35,
The vacuum cleaner 11 is used by moving the entire vacuum cleaner 11 via the handle 14 while driving the vacuum cleaner and bringing the suction opening body 13 into contact with the surface to be cleaned.

In this use, dust contained in the suction air (indicated by the dotted arrow in FIGS. 1 and 8 indicating the flow direction) which has been guided into the suction air passage B of the suction opening body 13 and has flowed into the dust collection 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 is supplied to the electric blower 3.
After being sucked into the air outlet 5, the air is discharged to the recirculation chamber 26 through the air outlet 41 of the motor cover 39, and a part of the air is passed through the exhaust hole (not shown) through the exhaust chamber 24 and the exhaust port (not shown). And is discharged out of the cleaner body 12.

The exhaust gas flowing into the reflux chamber 26 is
The air is guided from the vent hole 22c to the return air passage A of the suction port body 13, and is blown out from the recirculation outlet 54 toward the recovery chamber 82 side of the suction air passage B toward the intake port 91, for example. Such an air flow is indicated by solid arrows in FIGS. Therefore, the blown air is blown against the blade 102 of the rotary cleaning body 53 rotatably disposed directly below the reflux blowout port 54 to rotate the cleaning body 53 clockwise in FIG. After being sprayed on the surface to be cleaned facing the air inlet 91, the dust on the surface to be cleaned is sucked into the collection chamber 82 through the air inlet 91 while being lifted, and collected in the suction air path B. Then, along with this collection, it is sucked into the dust collection chamber 23 of the cleaner body 12.

As described above, the air discharged from the electric blower 35 is collected and circulated by the suction port 13,
With this force, the external air between the bottom wall 72a of the suction opening body 13 and the surface to be cleaned is sucked together with the dust into the suction opening 91, and the rotating cleaning body 53 is rotated by using the circulating air. The air circulation cleaning can be performed while the dust on the surface to be cleaned is removed.

This air circulating vacuum cleaner 1
1, the recirculation outlet 54 for blowing the circulating air to the blade 102 of the rotary cleaning body 53 is connected to the communication pipe 5 with the rotary cleaning body 53 as a boundary.
1 is located on the opposite side to the main body 5 of the suction port body.
A part of the air blown from the recirculation outlet 54 at the front side of the pipe 2 is connected to a communication pipe 51 provided at the rear of the suction port main body 52.
That the rotary cleaning body 53 is disposed between the return outlet 54 and the communication pipe 51.
Can get in the way.

As described above, a part of the air blown out from the recirculation outlet 54 is prevented from flowing directly into the communication pipe 51 by using the rotary cleaning body 53. There is no need to provide around the cleaning body 53, so that the structure of the suction opening body 13 can be simplified, and there is no dust caught around the rotary cleaning body 53, so that dust can be easily sucked. In addition, since a part of the air blown out as described above can be suppressed from directly flowing into the communication pipe 51, the recirculation air outlet 54
Therefore, the amount of air blown to the blade 102 of the rotary cleaning body 53 can be increased, and the rotation performance of the rotary cleaning body 53 and, consequently, the performance of the blade 102 to remove dust from the surface to be cleaned can be improved.

In addition, as described above, the rotary cleaning body 53 is interposed therebetween, and the opposite side of the communication pipe 51 connected to the rear portion of the suction port main body 52, that is, in front of the suction port main body 52. A return outlet 54 is provided at the position, and the rotating cleaning body 53 is rotated by air blown out from the return outlet 54, so that the rotation direction of the rotary cleaning body 53 rotated by the outlet is used for cleaning. Accordingly, the rotation direction of the rotary cleaning body 53 when the suction port main body 52 is advanced, that is, the forward direction can be set.

Therefore, when the suction port main body 52 is advanced along the surface to be cleaned, the rotation of the rotary cleaning body 53 rotated by the force of the air blown out from the return outlet 54 causes the suction port main body 52 to rotate. The forward movement of the part 52 can be assisted, and the suction port main part 52 can be easily advanced along the surface to be cleaned. Conversely, when the main suction port body 52 is retracted along the surface to be cleaned and retracted, the direction of the force exerted by the rotation of the rotary cleaning body 53 on the main suction port body 52 is determined by the direction of the main suction port body 52. Is opposite to the moving direction of the rotary cleaning body 5.
The ability of the third blade 102 to remove dust from the surface to be cleaned can be enhanced as compared with the case where the suction opening main body 52 is advanced.

Further, the recirculation outlet 54 is connected to the rotary cleaning body 53.
, The recirculation outlet 54 is located on the opposite side of the suction port 91 with respect to the rotary cleaning body 53 and the suction port 91.
The air circulating toward can be blown downward.
Therefore, the air immediately blown downward from the recirculation outlet 54 and blown to the blade 102 of the rotary cleaning body 53 is blown from directly above the surface to be cleaned. Therefore, compared with the case where air is blown obliquely downward to the surface to be cleaned or the case where air is blown from the return air outlet substantially parallel to the surface to be cleaned and the air circulation type cleaning is performed, the surface to be cleaned is The action of lifting dust by the air blown to the air increases, and the cleaning performance can be improved. In addition, the return outlet 54 formed of a slit is connected to the inlet main body 52.
Is provided over a long range in the width direction, so that the air blown to the surface to be cleaned can secure a long range in which dust blows up from the surface to be cleaned according to the length, so the cleaning performance is also in this respect. Can be improved.

Further, the recirculation outlet 54 is connected to the rotary cleaning body 5.
3 is provided above the lower half of the rotary cleaning body 53, in particular, above the rotary cleaning body 53 and in front of the rotary shaft 101 of the rotary cleaning body 53. The rotating cleaning body 53 can be rotated by spraying on the blade 102 moved to the upper part among the plurality of blades 102 thus formed.

As described above, the blade 102 of the rotating cleaning body 53 that is rotated in this manner sweeps out the dust on the surface to be cleaned. At this time, the blade 102 is moved to the upper part of the rotating cleaning body 53 and contributes to the sweeping out of the dust. A rotating force can be generated by the circulating air blown to the blade 102 not to be cleaned. On the other hand, the blade 102 moved to the lower part of the rotary cleaning body 53 sweeps out dust on the surface to be cleaned. Due to such roles, the rotary cleaning body 5
The circulated air is not blown to the blade 102 moved to the lower part of the blade 3. Therefore, the blade 102 moved to the lower part of the rotary cleaning body 53 does not bend partially away from the surface to be cleaned due to the force of the air blown out from the recirculation outlet 54, and has a predetermined flexibility. In this state, dust can be scraped out against the surface to be cleaned, and therefore, a reduction in the performance of dusting out the surface to be cleaned can be suppressed.

Further, as described above, since there is no member for suppressing the above around the rotary cleaning body 53, the rotary cleaning body 53 is rotated in the collection chamber 82 without hitting the surrounding parts. Therefore, the rotary cleaning body 53 is not damaged, and can be used quietly without generating noise due to contact with surrounding components. On the other hand, in the above-described conventional example shown in FIG. 10, the bypass passing through the route 8 from the recirculation outlet 5 c to the intake port 7 through between the front end partition 6 a and the rear peripheral surface of the rotary cleaning body 3. In order to reduce the air volume as much as possible, the leading end partition 6a is provided as close as possible to the peripheral surface of the rotary cleaning body 3, so that each blade 1 supported by the pivot 2 by centrifugal force accompanying the rotation of the rotary cleaning body 3 As the blade 1 is raised, there is a high possibility that these blades 1 will collide with the tip partition 6a, and there is a possibility that noise is generated or the blade 1 and the tip partition 6a are damaged.

The suction opening 13 provided in the vacuum cleaner 11 for performing the air circulation cleaning as described above has the return outlet 54 provided at the center in the width direction of the suction opening main portion 52. Since the blades 102 are equally distributed in the direction in which the blades 102 extend around the communication pipe 51, the flow of air from the return outlet 54 to the inlet 62 a of the communication pipe 51 is caused by one end of the rotary cleaning body 53 in the longitudinal direction. And air is blown from the recirculation outlet 54 to the intermediate portion in the longitudinal direction of the blade 102 of the rotary cleaning body 53 so that the load applied to the rotary cleaning body 53 by the air blowing against the blade 102 is reduced. The same can be made at both longitudinal ends of the body 53. Therefore, the rotating cleaning body 53 can be smoothly rotated, and the loads on the two bearings 106 are equalized, so that one of the bearings 106 is prevented from being worn early on the other bearing 106. Even when used for a long period of time, the rotating cleaning body 53 is less likely to rattle and can maintain smooth rotating performance.

Further, as described above, the return outlet 54 is provided in the same manner in the width direction of the inlet main body 52 with the communication pipe 51 as the center, so that the opening area of the outlet 54 is reduced. As compared with the case where the recirculation outlet 54 is provided to face only one end of the rotary cleaning body 53, the recirculation outlet 54 can be made larger and the opening area can be made larger because it is formed by the slit. As a result, the air resistance at the recirculation outlet 54 is reduced and the circulating air flows more easily, so that the back pressure on the electric blower 35 for circulating the air can be reduced, and the reduction in the blowing performance of the electric blower 35 is thereby suppressed. In addition, the amount of air blown to the blade 102 increases, and the rotating cleaning body 53
The ability to rotate smoothly can be improved.

The present invention is not limited to the first embodiment, but can be applied to a canister-type or handy-type air-circulating vacuum cleaner. Further, in the present invention, the cleaning member 102 of the rotary cleaning body 53 may be one in which brush bristles are formed continuously in a line, and the cleaning member 102 is provided in parallel to the axial direction of the rotary shaft 101. Not limited to this, it may be provided spirally around the outer periphery of the rotating shaft 101. When a spiral cleaning member is employed, the cleaning member may be continuous at the axial center of the rotating shaft 101 and twisted in opposite directions toward the end of the rotating shaft 101.

[0061]

The present invention is embodied in the form described above and has the following effects.

According to the suction opening according to the first to fourth aspects of the present invention, the cleaning member of the rotary cleaning body performs air circulation type cleaning while scraping dust on the surface to be cleaned. There is no need to provide a member around the rotary cleaning body to prevent a part of the air blown from the mouth from directly flowing into the communication pipe, so the structure is simple and dust is easy. Can be inhaled.

According to the air circulation type vacuum cleaner according to the fifth aspect of the present invention, since the suction port according to any one of the first to fourth aspects is provided, the first problem can be solved. There is.

[Brief description of the drawings]

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

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

FIG. 3 is an enlarged sectional view showing a configuration around a suction opening body of the electric vacuum cleaner shown in FIG. 2;

FIG. 4 is a plan view showing the configuration of the suction port shown in FIG. 3;

FIG. 5 is a plan view showing the configuration of the suction opening body shown in FIG. 3 with its main part upper case removed and a partial cross section.

FIG. 6 is a plan view showing the configuration of the suction port shown in FIG. 3 with a main part upper case, a main part middle case, and a communication pipe removed.

FIG. 7 is a bottom view showing the configuration of the suction port shown in FIG. 3;

FIG. 8 is a sectional view taken along the line ZZ in FIG. 4;

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

FIG. 10 is a cross-sectional view showing a configuration of a suction port according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Vacuum cleaner, 12 ... Vacuum cleaner main body, 13 ... Suction port body, 31 ... Dust collection bag (filter), 35 ... Electric blower, 51 ... Communication pipe, 52 ... Suction port main part, 53 ... Rotary cleaning body 54, a reflux outlet, 61, an outer pipe, 62, an inner pipe, 62a, an inlet of an inner pipe, 63, a pivot pipe, 71, an upper case, 72, a lower case, 73, a main part Middle case, 82: collection chamber, 83: blowout chamber, 91: intake port, 102: blade (cleaning member), A: return air path, B: suction air path.

Claims (5)

[Claims] An air blower incorporated in a cleaner body passes dust through a filter through a filter to collect dust, collects air discharged from the electric blower through the filter, and performs cleaning while circulating. A suction port body provided in a vacuum cleaner having a suction port body having a suction port for sucking air on the surface to be cleaned along with the circulation of the air; and A communication pipe communicating with the cleaner body side, a rotary cleaning body having a cleaning member on the outer peripheral surface and rotatably mounted in the main body of the suction port body facing the suction port, A recirculation outlet provided at the main portion of the suction port body opposite to the communication pipe and for blowing the circulating air to the cleaning member to rotate the rotary cleaning body. . 2. The method according to claim 1, wherein the rotating direction of the rotary cleaning body rotated by the air blown out from the return outlet is a forward direction of the rotary cleaning body when the main body of the suction port body is advanced. The suction port body according to claim 1, wherein 3. The method according to claim 2, wherein the recirculation outlet is provided on the opposite side of the rotary cleaning body from the air inlet and blows the circulating air downward toward the air inlet. Item 3. The inlet body according to Item 1 or 2. 4. The cleaning device according to claim 1, wherein said recirculation outlet is provided so as to blow said circulating air toward a cleaning member of said cleaning member which has been moved above said rotary cleaning body. 4. The suction port body according to any one of 3. 5. The operation of an electric blower in a cleaner body, in which air on the surface to be cleaned is sucked from an air inlet of an air inlet body, the sucked air passes through a filter to capture dust, and passes through the filter. An electric vacuum cleaner that returns air discharged from the electric blower to the intake port and collects and returns the returned air for cleaning while circulating the air. Any one
An electric vacuum cleaner comprising the suction port body described in the item.