JP3163291B2 - 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, in which air is sucked from an air inlet of a suction opening body, the sucked air is passed through a filter to capture dust, and the air passes through the filter. TECHNICAL FIELD The present invention relates to an air circulation type vacuum cleaner which cleans while returning air discharged from an electric blower to an intake port and sucking and circulating the returned air, and a suction port provided in the vacuum cleaner.

[0002]

2. Description of the Related Art Japanese Patent Laying-Open No. 4-193239 discloses that air discharged from an electric blower in a cleaner body is guided to one end in a width direction of a suction port housing a rotary cleaning body having blades. At one end of the rotating cleaning body, the blade is sprayed on the blade to rotate the rotating cleaning body, and the air that has rotated the rotating cleaning body is sucked from the other end in the width direction of the suction opening body, and the air is blown to the electric blower. An air circulation type vacuum cleaner which can be suctioned to perform air circulation type cleaning is described.

[0003] As shown in this publication, the structure of a suction port 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.

[0004]

[SUMMARY OF THE INVENTION] However, the rotary cleaning body is rotated by blowing the air circulating in the one end portion of the rotary cleaning body as described above, it draws air at the other end side of the cleaning element < In the configuration, the load applied to the rotary cleaning element by the circulating air is such that one end of the rotary cleaning element positioned on the air blowing side is closer to the rotary cleaning element positioned on the air suction side . Larger than the other end.

[0005] Since the magnitudes of the loads at both ends in the axial direction of the rotary cleaning body differ in this manner, the rotary cleaning body tends not to rotate smoothly. In addition, the portion supporting one end of the rotating cleaning body having the larger load is more likely to be worn than the portion supporting the other end of the rotating cleaning body. There is a fear that the smoothness of rotation is easily lost.

In addition, according to the configuration in which the circulating air is blown to one end of the rotary cleaning body to rotate the rotary cleaning body as described above, the area of the rotary cleaning body against which the air is blown against the blade is limited. Therefore, there is a problem that the back pressure on the electric blower is strong. Therefore, the blowing performance is reduced in accordance with the back pressure, the amount of air blown to the blade is reduced, and the ability to rotate the rotary cleaning body smoothly is low.

In the technique described in the above publication, it is unclear whether the air blown to the blade of the rotary cleaning body subsequently blows against the surface to be cleaned and the dust on the surface floats. However, even if this is the case, since the spraying is partially limited as described above, the dust suction performance at the suction port body is low in accordance with the small range in which the dust floats.

[0008] The first problem to be solved by the present invention is:
An object of the present invention is to provide a suction opening body that can guarantee smooth rotation of a rotary cleaning body for a long period of time and reduce back pressure on an electric blower that circulates air.

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

[0010]

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 the suction port is provided in a vacuum cleaner that performs cleaning while sucking and circulating the discharged air.

[0011] In order to solve the first problem, a suction port according to the first aspect of the present invention provides a suction port for sucking dust.
Inlet, a collection chamber communicating with the inlet, and
Return air outlets that blow air circulated into the collection chamber
A main body of a suction port body provided with a bearing portion, and an outer pipe
Part, which is provided inside this outer tube part and is open at both axial ends.
With respect to the suctioned inner tube portion and the outer tube portion.
Protruding in the opposite direction so as to be perpendicular and opposite to each other
A pair of pivot tube portions rotatably connected to the bearing portion;
And a flow path between the inner and outer pipe sections and the pair of pivot pipe sections.
The inner channels communicate with each other to form part of the return airway,
And an inlet opening at one axial end of the inner pipe portion.
It is provided between a pair of pivot pipes, and is located above the suction port main body.
The recovery comprises a communicating pipe which communicates with the pivotally mounted to raised or lowered down the cleaner body side, the cleaning member on the outer peripheral surface
A rotary cleaning body rotatably disposed facing the intake port in the chamber, and allocating the reflux outlet to the main portion of the suction port body in the same manner in the width direction around the communication pipe. Providing the inlet through the pair of pivots
The air circulated back into the main body is circulated to the reflux outlet.
The cleaning member is sprayed from above.
It is those that. Similarly, to solve the first problem
The suction opening according to the second aspect of the present invention is
Filters air sucked by the built-in electric blower
Through the filter to capture dust and pass through the filter
While sucking and circulating the air discharged from the dynamic blower
Provided in a vacuum cleaner that cleans and sucks in dust.
Air inlet, and circulated provided in communication with this air inlet
A suction port body having a collection chamber through which air is blown,
It has a pair of pivot tubes, and the suction tube is utilized by utilizing the pivot tubes.
The cleaner is rotatably connected to the main body of the mouth body.
A suction port body provided with a communication pipe communicating with the main body side
And the communication pipe is provided in an outer pipe portion, inside the outer pipe portion.
An inner pipe portion for suction provided and opened at both axial ends,
And substantially perpendicular to the outer tube and facing away from each other
The pair of pivot tube portions projecting in opposite directions so as to have
And a flow path between the inner and outer pipe sections and the pair of pivot pipe sections.
The inner channels communicate with each other to form part of the return airway,
And an inlet opening at one axial end of the inner pipe portion.
It is provided between a pair of pivot pipes, and is located above the suction port main body.
It is pivoted downward so that it can be cleaned on the outer peripheral surface.
Collecting the rotating cleaning body having a member facing the suction port
Rotatably disposed in the chamber and through the pair of pivot tubes
Cleaning the air circulating back to the main part of the suction port body
The recirculation outlet that blows to the member is centered on the communication pipe.
In the same direction in the width direction of the main body of the suction port
It is characterized by having been provided.

According to the first and second aspects of the present invention, the air discharged from the electric blower circulates through the suction port body, and thereby sucks dust on the surface to be cleaned from the suction port of the main portion of the suction port body. In addition, the air can be cleaned by suction through the communication pipe into the cleaner body . Suction at that time
Air is returned to the main body of the mouth via a communication pipe, and
A pair of pivots projecting so that the air
The air blown out from the pipes and returned into the main body of the suction port body in this way is blown from the recirculation outlet of the main part to the cleaning member of the rotary cleaning body to be sucked into the inner pipe part of the communication pipe. The rotating cleaning body can be rotated with the attachment. 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 in the same manner in the direction in which the cleaning member extends, centering on the communication pipe provided at the center in the width direction of the main portion of the suction port body. In addition, the flow of air from the return outlet to the communication pipe is not biased toward one end of the rotary cleaning body. Therefore, the load applied to the rotary cleaning body by blowing air to the cleaning member can be similarly made at both ends in the longitudinal direction. In addition, by providing the return outlet as described above, the outlet can be provided without being limited to only one end side of the rotary cleaning body, and a large opening area can be secured accordingly. Therefore, the air resistance at the reflux outlet can be reduced. Further, when a return outlet is provided so that air immediately after rotating the rotary cleaning body is blown against the surface to be cleaned, the area in which dust is lifted on the surface to be cleaned by the air blown out from the outlet is sucked. It can be long in the width direction of the main body of the mouth.

In carrying out the first and second aspects of the present invention,
As in the invention according to claim 3 which depends on these inventions, it is preferable that the return outlet is formed by a slit extending continuously in the width direction of the main portion of the suction port body. This is excellent in that the return outlet can be easily formed, and the opening area can be increased to further reduce the air resistance there.

In carrying out the invention of claims 1 to 3 ,
As in the invention according to claim 4 which depends on these inventions, the arrangement length of the return outlet along the width direction is set to be the same as the overall length of the cleaning member, and the return outlet is extended along the length of the cleaning member. It is good to be provided facing the whole direction. With this configuration, the air blown out from the return outlet can be blown over a longer range to the cleaning member of the rotary cleaning member, so that the rotary cleaner can be rotated more smoothly, and at the same time, the rotation of the rotary cleaner can be reduced. It is excellent in that air resistance can be reduced. In addition, in the case where a return outlet is provided so that air immediately after rotating the rotary cleaning body blows against the surface to be cleaned, the area where dust is lifted on the surface to be cleaned by the air blown out from the outlet is cleaned. A longer length in the width direction of the main portion of the suction port body can be secured to the same extent as the member. or,
In carrying out the invention of claims 1 to 4, they are dependent
According to a fifth aspect of the present invention, the return outlet is
It is preferable to provide it above the rotation axis of the rotary cleaning body. In addition,
In carrying out the invention of claims 1 to 5, the subordinates thereof
As in the invention of claim 6, the reflux outlet is
Exhaust to the cleaning member of the rotary cleaning body located directly below
Between the rotary cleaning body and the air inlet so that
It is good to put it in.

In the electric vacuum cleaner according to the present invention, the dust 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 dust is sucked together with the dust . I through the air filter to capture dust, returning the air discharged from the electric blower through the filter to the air inlet, the electric vacuum to perform cleaning while circulating sucks the returned air Machine. And
In order to solve the second problem, a vacuum cleaner according to the invention of claim 7 is configured such that the suction port is the suction port according to any one of claims 1 to 6. It is a feature.

[0017] Thus, in this air circulation type vacuum cleaner, by providing the suction port body according to the invention of claims 1 to 6, the invention of any one of the above-described invention of claim 1-6 Can be obtained.

[0018]

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 right and left 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. In this case, the cleaner body 12 can be supported so that the self-standing posture of the cleaner body 12 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 inclined 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 drawn 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.

The 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 the center, 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 collecting chamber 23. 36, 3
Reference numeral 7 denotes an anti-vibration motor support 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.

The 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 facing 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 attached 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 to 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 that is inserted and connected so that it can 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 62 longer than the outer tube 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 bearing portions 74 having semicircular recesses (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.

Inside the main body 52 of the suction port, a blowing chamber 81 is provided.
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 recovery 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 preventing 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 of the middle portion 73 of the main portion at the center in the width direction is bent upward so as to be fitted into the inner surface of the upper case 71, and the bent portion is formed. 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.

For this reason, as shown in FIG. 8, 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 rotating cleaning body 53 has a rotating shaft 101 as a cleaning body, one or more blades 102 as a cleaning member, and support shafts at both ends of the rotating shaft 101. Supports 103 and 104 are fitted respectively, and support shafts 105 projecting from the supports 103 and 104 are supported by bearings 106, respectively. Therefore, the portions other than the bearings 106 at both ends of the rotary cleaning body 53 are integrally rotated. The rotating cleaning body 53 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 front end of the cleaning member 2 passes through the air inlet 91 and contacts the surface to be cleaned.

4 and 5 are provided at the rear of the blowing chamber 81.
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. The recirculation outlet 54 provided with the rotary cleaning body 53 placed between the suction port 91 and the suction port 91 blows the air in the outlet chamber 81 to the blade 102, and when the suction port 13 is pushed forward. When the rotation direction F (see FIG. 8) of the rotating cleaning body 53 that rotates is defined as the forward direction, the rotation cleaning body 53 is positioned forward of the rotation shaft 101 of the rotating cleaning body 53 so as to obtain this forward rotation. It is open to the middle case 73.

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. The recirculation outlet 54 is provided in the same manner with the communication pipe 51 as a center in the width direction of the main body 52 of the suction port. 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 as long as the action that can solve the problem of the present invention can be obtained. . Note that the recirculation outlet 54 may be formed by a plurality of discontinuous holes or the like.

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 the air discharged from the electric blower 35 is sucked and circulated by the suction opening 13 in this manner, the external air between the bottom wall 72a of the suction opening 13 and the surface to be cleaned is urged. Is sucked into the intake port 91 together with the dust, and the rotating cleaning body 53 is
The air circulation type cleaning can be performed while rotating the to remove dust on the surface to be cleaned.

This air circulating vacuum cleaner 1
1, the suction port body 13 includes
The air circulating through the blade 10 of the rotary cleaning body 53
2 is connected to the main body 52 of the suction port body.
Are arranged in the same manner in the direction in which the blade 102 extends around the communicating pipe 51 provided at the center in the width direction of the blade. Therefore, the flow of air from the recirculation outlet 54 to the inlet 62 a of the communication pipe 51 does not deviate toward one longitudinal end of the rotary cleaning body 53, and
The air can be blown from the recirculation outlet 54 to the middle part of the blade 102 in the longitudinal direction.

Therefore, the load applied to the rotary cleaning body 53 by the air blown against the blade 102 can be made equal at both longitudinal ends of the rotary cleaning body 53, so that the rotation of the rotary cleaning body 53 can be smoothly performed. Since the loads on the bearings 106 at both ends in the longitudinal direction of the rotary cleaning body 53 are equalized, one of the bearings 106 is prevented from being worn early on the other bearing 106, so that even during long-term use. The rotation cleaning body 53 is less likely to rattle and can maintain smooth rotation performance.

Further, as described above, the return outlet 54 is provided in the width direction of the inlet body main part 52 around the communication pipe 51, so that the opening area of the outlet 54 can be reduced. The opening 54 can be secured to be larger than when the opening 54 is provided to face only one end of the rotary cleaning body 53. Moreover, forming the recirculation outlet 54 with a slit extending continuously in the width direction of the suction port main body 52 as in the present embodiment can ensure a larger opening area. As a result, the air resistance at the recirculation outlet 54 is reduced, and the air circulating through the suction port body 13 flows more easily.
Back pressure on the vehicle. Accordingly, with the suppression of the reduction of the blowing performance of the electric blower 35 in accordance with the back pressure, the amount of air blown to the blade 102 of the rotary cleaning body 53 increases, and the rotary cleaning body 5
The ability to rotate 3 smoothly can be improved.

Forming the reflux outlet 54 with a slit is also excellent in that the formation is easy.
In the above-described cleaning, air is blown from just above the surface to be cleaned from the reflux outlet 54 to this surface, so that air is blown obliquely to the surface to be cleaned. The blown air has a great effect of lifting dust on the surface to be cleaned. Moreover, according to the length of the recirculation outlet 54 provided over a long range in the width direction of the suction port main body 52, it is possible to secure a long range in which air blown to the surface to be cleaned lifts dust from the surface to be cleaned. Therefore, it is also excellent in that the cleaning performance can be improved. In the present invention, the recirculation outlet 54 may be provided so as to blow air obliquely to the surface to be cleaned.

Next, a second embodiment of the present invention shown in FIG. 10 will be described. In this description, the same components as those in the first embodiment will be denoted by the same reference numerals as those in the first embodiment, and the description thereof will be omitted, and only the components different from those in the first embodiment will be described. Only the following will be described.
The difference between the second embodiment and the first embodiment is the length of the front portion of the blowout chamber 81 and the length of the recirculation outlet 54 provided therein.

That is, the front portion of the discharge chamber 81 and the return outlet 54 provided therein have the same length as the entire length of the blade 102 of the rotary cleaning body 53, and the return outlet 54 extends in the longitudinal direction of the blade 102. It is provided so as to be opposed over the whole (full width). The configuration other than this point is the same as that of the first embodiment, including a configuration not shown in FIG.

Therefore, in the second embodiment, the same operation as in the first embodiment can be obtained. In addition, the above-described recirculation outlet 54 provides the recirculation outlet 53 with substantially the entire length of the blade 102 of the rotary cleaning body 53 (that is, the entire width of the blade 102, in other words, between both ends in the longitudinal direction of the blade 102). The air blown out from 54 can be blown. Therefore, as compared with the first embodiment, the rotary cleaning body 53 can be rotated more smoothly, and the air resistance at the return air outlet 54 can be further reduced to further reduce the back pressure on the electric blower. Is excellent. Further, as described above, since the recirculation outlet 54 is set to be approximately the entire width of the blade 102, the range in which air blown to the surface to be cleaned raises dust from the surface to be cleaned is determined by the blade 102 of the rotary cleaning body 53. Since it can be made almost equal in width, it is also excellent in that the cleaning performance can be further improved.

The present invention is not limited to the above embodiments, and can be applied to a canister type or handy type air circulation type 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.

[0058]

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

[0059] According to the suction port body according to the invention of claim 6, the apparatus having performed the cleaning of air-circulating while scraping dust from a cleaning surface by the cleaning member of the rotary cleaning body, rotary cleaning Since the load applied to the rotating cleaning member by the air that blows against the cleaning member of the body can be similarly applied to both ends in the longitudinal direction of the rotating cleaning member, smooth rotation of the rotating cleaning member can be ensured over a long period of use, and the recirculation outlet can be protected. Since a large opening area is secured to reduce the air resistance there, back pressure on the electric blower for circulating air can be reduced.

According to the air circulation type vacuum cleaner according to the invention of claim 7 , since the suction opening according to any one of claims 1 to 6 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. (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 plan view showing a configuration of a suction opening body of an upright type air circulation type vacuum cleaner according to a second embodiment of the present invention, in which a main part upper case is removed and a part thereof is sectioned; .

[Description of Signs] 11 ... Vacuum cleaner, 12: Vacuum cleaner body, 13 ... Suction port body, 31 ... Dust collection bag (filter), 35 ... Electric blower, 51 ... Communication pipe, 52 ... Suction port body main part, 53: rotating cleaning body, 54: reflux outlet, 61: outer pipe, 62: inner pipe, 62a: inlet of inner pipe, 63: pivot pipe, 71: upper case of main part, 72: lower case of main part , 73: main part middle case, 82: collection chamber, 83: blowout chamber, 91: intake port, 101: rotary shaft, 102: blade (cleaning member), A: return air path, B: suction air path, L1, L2: Distribution dimensions.

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A47L 9/08 A47L 5/14

Claims (7)

(57) [Claims] An air blower incorporated in a cleaner body is used to collect dust by passing the air through a filter, and to suck and circulate air discharged from the electric blower through the filter. In the suction port provided in the vacuum cleaner, a suction port for sucking dust and a suction port communicating with the suction port are provided.
Recirculation chamber that blows air circulated through the collection chamber and the collection chamber
Each of the outlets has a suction port body main part provided with a bearing part , an outer pipe part, and both ends in the axial direction provided inside the outer pipe part.
The open inner pipe section for suction and the outer pipe section
Protruding in opposite directions so that they are approximately right angles and face each other
And a pair of pivot tubes rotatably connected to the bearing portion
Flow path between the inner and outer pipe portions and the pair of pivots
The inner channels of the pipe communicate with each other and form part of the return air path.
And an inlet opened at one axial end of the inner pipe portion.
The suction port body is provided between the pair of pivot tube portions and is opposed to the suction port body main portion.
A communication pipe that is pivotally mounted so as to rise and fall in the vertical direction and communicates with the cleaner body side, and has a cleaning member on an outer peripheral surface and is rotatably disposed in the collection chamber so as to face the intake port. equipped with rotary cleaning body, and is provided by distributing the reflux blow port in the same way in the width direction on the suction port body main portion about said communicating pipe, said
Returned to the main body of the suction port body through a pair of pivot shafts
Circulating air from the recirculation outlet through the cleaning member
A suction mouth body characterized in that it is sprayed on . 2. An electric blower built in a cleaner body.
The dust is captured by passing the sucked air through a filter,
Air discharged from the electric blower after passing through the filter
In preparation for a vacuum cleaner that cleans while sucking and circulating
Air intake that sucks in dust, and
A collection chamber that is provided in communication with
Having a main body of the suction port body and a pair of pivot pipes,
Rotated relative to the main body of the suction port body using a pivot tube
A communication pipe that is freely connected and communicates with the cleaner body side;
In the suction port body provided with the said communicating pipe, et al provided an outer tube portion, the inner side of the outer tube portion
Inner tube for suction with both axial ends open, and
Be substantially perpendicular to the outer tube and face away from each other
Having the pair of pivot tube portions projecting in opposite directions,
The flow path between the inner and outer pipe sections and the inner flow path of the pair of pivot pipe sections
Communicate with each other and form a part of the return air path, and
The pair of pivot pipes are connected to the inlet opened at one axial end of the side pipe part.
Between the main body and the main body of the suction opening body in the vertical direction.
A rotary cleaning body , which is pivotally mounted so as to fall down and has a cleaning member on the outer peripheral surface, faces the suction port.
To be rotatable in the collection chamber, and returned into the suction port main body through the pair of pivot pipes.
Circulating air that blows the circulated air to the cleaning member
An outlet is provided on the main body of the suction port body with the communication pipe as the center.
It is characterized by being arranged in the same way in the width direction
That the suction port body. 3. The method according to claim 2, wherein the return outlet is connected to the main body of the inlet body.
Characterized by a slit that extends continuously in the width direction
The suction port body according to claim 1 or 2, wherein 4. The arrangement of the return outlet along the width direction.
The length of the cleaning member is the same as the total length of the cleaning member.
With the spout facing the entire length of the cleaning member
Any one of claims 1 to 3, wherein
Item 2. An inlet body according to item 1. 5. The method according to claim 5, wherein said recirculation outlet is rotated by said rotary cleaning body.
5. The method according to claim 1, wherein the shaft is provided above the shaft.
The suction mouth body according to any one of the preceding claims. 6. The recirculation outlet is disposed immediately below the recirculation outlet.
Exhaust air to the cleaning member of the rotating cleaning body
In addition, the suction port and the rotary cleaning body are provided between them.
The method according to any one of claims 1 to 5, wherein
Suction port body. 7. An air blower operated by an electric blower in the cleaner body.
The air on the surface to be cleaned is sucked in from the air inlet of the
The sucked air passes through a filter to capture dust,
Air passing through the filter and discharged from the electric blower.
Back to the intake port, it is circulated to recover the return air
7. An electric vacuum cleaner which performs cleaning while rotating the suction port.
Electric cleaning characterized by using the suction port body described in (1).
Machine.