JP2020005756A - Vacuum cleaner - Google Patents

Abstract

To provide a vacuum cleaner whose driving device can be easily assembled.SOLUTION: A vacuum cleaner includes a driving device holding an electric blower 30 inside and a dust collecting device. The driving device includes a dust collecting device mounting part, a first ventilation route communicating with a suction port for guiding dust containing air to the inside of the dust collecting device mounted on the dust collecting device mounting part, a second ventilation route for circulating the air from the dust collecting device, and a filter provided at an upstream side of the electric blower 30 in an air flow direction in the second ventilation route. The second ventilation route is composed including an upstream side member 17B for connecting the filter and an upstream side end in an air flow direction of the electric blower 30. An upstream side member 17B is composed of one integrally formed component having a filter attaching part 17Ba for detachably attaching the filter and a fit-in part 17Bb for fitting in the upstream side end 30a of the electric blower 30, thereby reducing the number of components and assembly manhours of the driving device.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a vacuum cleaner.

As a conventional vacuum cleaner, for example, Patent Document 1 proposes a cyclone vacuum cleaner having the following configuration.
The cyclone-type vacuum cleaner includes a driving device containing an electric blower and a filter, and a cyclone-type dust collecting device detachably mounted on the driving device.

  The driving device includes a dust collecting device mounting portion for detachably mounting the dust collecting device, a suction port for taking in dust-containing air therein, and introducing the dust-containing air into the dust collecting device in communication with the suction port. A first ventilation port provided in the dust collection device mounting portion, a second ventilation port provided in the dust collection device mounting portion into which air from which dust from the dust collection device is separated is introduced, and a second ventilation port. An exhaust port communicating with the filter and a filter detachably provided near the second ventilation port inside the driving device are provided.

The dust collecting device includes a first cylindrical centrifugal separator that separates the first dust in the air, and a first cylindrical centrifugal separator that communicates with the first cylindrical centrifugal separator and passes through the first cylindrical centrifugal separator. Multi-cyclone type dust collector including a second cylindrical centrifugal separator for separating second dust smaller than the first dust, and a dust container for collecting the first and second dust. It is.
In the dust collecting device, the dust collecting container is provided with an inflow port that can be connected to the first ventilation port of the driving device, and the second cylindrical centrifugal separator can be connected to the second ventilation port of the driving device. Outlet is provided.
In such a multi-cyclone type vacuum cleaner, fine dust that cannot be completely captured by the dust collecting device is captured by a filter provided near the second ventilation port.

JP-A-2006-043141

In the multi-cyclone type vacuum cleaner as described above, when forming a ventilation path for communicating the filter and the electric blower inside the driving device, a mounting portion for mounting the filter, a fixing portion for fixing the electric blower, a mounting portion. A plurality of components such as a seal portion provided between the fixed portion and between the fixed portion and the electric blower were provided.
Therefore, the number of parts and the number of assembling steps of the driving device increase.

  The present invention has been made in view of such a problem, and an object of the present invention is to provide a vacuum cleaner in which a drive device can be easily assembled.

According to the present invention, there is provided a driving device housing an electric blower therein, and a dust collecting device capable of separating the dust from air containing the dust,
The driving device includes a dust collection device mounting portion to which the dust collection device is detachably mounted, a suction port that takes in dust-containing air therein, and an air communication device that communicates with the suction port and includes dust-containing air. A first ventilation path leading into the dust collection device mounted on the mounting portion, and a second ventilation path through which air from which the dust from the dust collection device mounted on the dust collection device mounting portion is separated is circulated. A filter provided on the upstream side of the electric blower in the airflow direction in the second ventilation path, and an exhaust port for discharging air from which dust flowing through the second ventilation path has been removed to the outside,
The electric blower is disposed in the second ventilation path,
The second ventilation path is configured to include an upstream member that connects the filter and an upstream end in the airflow direction of the electric blower,
An electric vacuum cleaner is provided in which the upstream member includes a filter mounting portion for detachably mounting the filter, and a fitting portion integrally formed with the filter mounting portion to fit the upstream end portion of the electric blower. You.

  In the vacuum cleaner of the present invention, since the upstream side member of the second ventilation path that connects the filter and the electric blower is formed of one integrally formed part, the number of parts and the number of assembly steps of the drive device are reduced. be able to.

It is a perspective view which shows the cleaner main body with which the dust collection device of Embodiment 1 of this invention was attached to the drive device. It is sectional drawing which shows the internal structure of the cleaner main body of FIG. FIG. 2 is a perspective view showing a state where a dust collecting device is removed from a driving device of the cleaner main body of FIG. 1. FIG. 4 is a perspective view of the driving device of FIG. 3 as viewed from above. FIG. 4 is an exploded view of the filter removed from the driving device of FIG. 3. FIG. 3 is a plan view illustrating components of first and second ventilation paths provided inside the driving device according to the first embodiment. FIG. 7 is an exploded view of components of first and second ventilation paths in FIG. 6. FIG. 8 is a perspective view showing an upstream member in a component part of the disassembled second ventilation path in FIG. 7. FIG. 8 is a perspective view illustrating a downstream member in a component part of the disassembled second ventilation path in FIG. 7.

(Embodiment 1)
FIG. 1 is a perspective view showing a cleaner main body in which a dust collector according to Embodiment 1 of the present invention is mounted on a driving device, and FIG. 2 is a cross-sectional view showing an internal structure of the cleaner main body of FIG. 3 is a perspective view showing a state where the dust collecting device is removed from the driving device of the cleaner main body of FIG. 1, FIG. 4 is a perspective view of the driving device of FIG. 3 viewed from above, and FIG. FIG. 4 is an exploded view of the filter removed from the driving device of FIG. 3. 1 and 3, the arrow X direction indicates the front-back direction, the arrow Y direction indicates the left-right direction, and the arrow Z direction indicates the up-down direction.

  As shown in FIGS. 1 to 5, the dust collecting device 20 according to the first embodiment of the present invention is detachably mounted on a canister-type driving device 10, thereby constituting the cleaner main body 1 of the vacuum cleaner. The drive device 10 of the cleaner body 1 is connected to a flexible hose having a handle and an operation unit (not shown), an extension pipe, and a suction port.

<Structure of drive device>
In the cleaner body 1, the driving device 10 is provided inside the housing 11, having a housing 11 having an upwardly open concave dust collection device mounting portion 12 for attaching and detaching the dust collection device 20 in the up and down direction while lying down. And a pair of left and right wheels 13 and a front wheel 14 rotatably provided on the housing 11 so as to be able to move forward (move) on the floor surface.

  The housing 11 has an upper end edge that is oblong in plan view, and a front portion of the upper end edge is a handle portion 11a that is U-shaped in plan view. In addition, a code reel 40 for winding a power cord (not shown) for supplying electric power from an external power supply to the electric blower 30 into the housing 11 is provided at a rear right portion of the housing 11. A take-up start button 15 is provided at a rear portion of the dust-collecting device mounting section 12 to operate the code reel 40 to take up a power cord pulled out from the code reel 40.

The housing 11 has a suction port 11b that can be connected to a base end of a flexible hose (not shown) below the handle portion 11a and in front of the dust collecting device mounting portion 12, and the air flow of the dust collecting device 20 is controlled. has a first vent hole 11c can be connected to the inlet 21a ₂ at the bottom left rear of the dust collecting device mounting portion 12, the second air inlet openings 11d and air outlet 22Da ₁₂ of the dust collecting device 20 can be connected (Fig. 9 has a reference) to the bottom front of the dust collecting device mounting portion 12 has an exhaust port 11e ₁ to the rear wall portion 11e.
A packing is provided in the first ventilation port 11c, and a filter 50 is detachably mounted on the second ventilation port 11d.
Further, protruding leg section 11f at three locations around the outlet 11e ₁ of the wall portion 11e after the housing 11 to allow vertical driving device 10 is provided.

Inside the drive device 10, a portion between the suction port 11b and the first ventilation port 11c is a first ventilation path 17a for air, and a portion between the second ventilation port 11d and the electric blower 30 is an upstream second ventilation port. has a path 17b, between the electric blower 30 and the exhaust port 11e ₁ of the rear wall portion 11e is in the downstream side second ventilation path 17c. The electric blower 30 is disposed at a lower portion (beside the first ventilation opening 11c) of the dust collection device mounting portion 12 at an intermediate position in the front-rear direction, and the downstream second ventilation path 17c is connected to the cord reel 40 by the electric blower 30. It has reached the exhaust port 11e ₁ wraps around to the left and right sides of the.

As shown in FIGS. 3 and 4, a pair of dust collectors 20 of the dust collector 20 are provided on the left and right sides of a filter 50 described later attached to the second ventilation port 11d (FIG. 9) in the dust collector mounting section 12. a pair of engaging recesses 11g of the locking pawl 22Db ₂ is disengageably locking is provided.

Further, concave terminal electrically connectable convex terminals 11b ₁ of the electric wiring portion provided at the proximal end of the flexible hose (not shown) is provided in the suction port 11b, the convex terminal 11b ₁ is It is electrically connected to a circuit board (not shown) via a lead wire. The circuit board is provided near the cord reel 40 in the housing 11 and is electrically connected to the electric blower 30 and a power cord (not shown) via a lead wire or the like.

  As shown in FIG. 5, the filter 50 includes a main filter main body 51, a sub-filter main body 52 detachably mounted on the filter main body 51, and an intake-side portion of the main filter main body 51 having the sub-filter main body 52 mounted thereon. And a filter case 53 detachably mounted on the second ventilation opening 11d. Note that the filter case 53 can also detachably cover the intake side portion of the main filter main body 51 to which the sub-filter main body 52 is not mounted.

The main filter body 51 includes a rectangular pleated filter portion 51a in a plan view, a rectangular outer peripheral frame portion 51b provided integrally with the outer peripheral portion of the filter portion 51a, and a seal provided on the outer peripheral surface of the outer peripheral frame portion 51b. A portion 51c.
The sub-filter main body 52 is formed of a porous plate made of a material such as a foamed resin or a non-woven fabric, and is formed in a size that can be housed in the outer peripheral frame portion 51b on the intake side of the main filter main body 51 with almost no gap.

Filter case 53 includes an upper wall portion 53a having a window portion 53a ₁ for exposing the sub-filter body 52 to the outside, and the outer peripheral wall portion 53b provided vertically on the periphery of the upper wall portion 53a, the upper wall portion 53a and the outer peripheral wall A storage space for storing the main filter main body 51 and the sub-filter main body 52 is provided. The filter case 53 also functions as a base that supports a centrifugal separation unit 22 described later of the dust collecting device 20 mounted on the dust collecting device mounting portion 12 by being mounted on the second ventilation port 11d.

In the filter case 53, with packing 53a ₂ is provided around the window portion 53a _1, the window portion 53a ₁ is disposed on the front end side. When the sub-filter main body 52 and the main filter main body 51 are stored in this order in the storage space of the filter case 53, a gap is provided between the upper wall portion 53a and the sub-filter main body 52. Therefore, air flowing through the window 53a ₁ also can pass through the portion not facing the window portion 53a ₁ of the sub-filter body 52 and the main filter body 51.

In addition, some of the outer peripheral wall portion 53b, the locking pawl 53f ₁ and the lock release lever 53f ₂ to lock the filter case 53 attached to the second vent hole 11d of the driving device 10 releasably is provided.
On the other hand, the vicinity of the second vent hole 11d in the driving device 10 the engagement recess is provided (not shown) for detachably locking the locking pawl 53f _1.
By fitting the filter case 53 to the second vent hole 11d, the lock claw 53f ₁ is locked engaged with the engagement recess (not shown), the locking pawl 53f ₁ by pressing the lock release lever 53f ₂ is engaged The filter case 53 can be lifted to be detached from the second ventilation port 11d so as to be detached from the stop recess (not shown).

[First ventilation path and second ventilation path]
FIG. 6 is a plan view showing components of the first and second ventilation paths provided inside the driving device according to the first embodiment. FIG. 7 is an exploded view of components of the first and second ventilation paths of FIG. FIG. FIG. 8 is a perspective view showing an upstream member in a component part of the disassembled second ventilation path in FIG. 7, and FIG. 9 is a view showing a downstream member in a component part of the disassembled second ventilation path in FIG. FIG. In FIG. 6, the arrow X direction indicates the front-back direction, the arrow Y direction indicates the left-right direction, and the arrow Z direction indicates the up-down direction.

As shown in FIGS. 1 to 7, a first member 17 </ b> A configuring a first ventilation path 17 a and an upstream second member 17 </ b> B configuring a second upstream ventilation path 17 b are provided in a housing 11 of the driving device 10. And a downstream second member 17C that constitutes a part of the downstream second ventilation path 17c. Incidentally, the downstream side of the downstream-side second member 17C in the downstream second air path 17c is cord reel 40 is configured of the arranged and the interior space of the exhaust port 11e ₁ and communication with the housing 11.

As shown in FIGS. 6 and 7, the first member 17 </ b> A is connected to the first ventilation port 11 c provided on the downstream side in the airflow direction and the suction port 11 b provided on the upstream side in the airflow direction. in the form of a tubular member that is twisted and a connecting port 17Aa, which is hermetically connected to, the circumference of the first vent hole 11c and the packing 11c ₁ is mounted. In the case of the first member 17A of Embodiment 1, the connection port 17Aa is disposed in front of the upstream second member 17B so as to open forward, and the rear portion of the upstream second member 17B such that the ventilation port 11c opens upward. It is formed in a twisted shape while being arranged on the left side.

  As shown in FIGS. 6 to 8, the upstream second member 17B is a constituent member of the upstream second ventilation path 17b that connects the filter 50 and the upstream end 30a in the airflow direction of the electric blower 30. It has a filter mounting portion 17Ba for detachably mounting the filter 50, and a fitting portion 17Bb formed integrally with the filter mounting portion 17Ba to fit the upstream end 30a of the electric blower 30.

Filter mounting portion 17Ba is a filter case 53 is part of the saucer-shaped formed fits the shape and size of the filter 50, the grating portion 17Ba ₁ at its bottom is provided, the opening and the second vent hole 11d. Further, a filter mounting portion 17Ba is on the inner circumferential surface near the grating portion 17Ba ₁ has a stepped portion 17Ba _2, the seal portion 51c is stepped portion 17Ba of the filter case 53 of the filter 50 fitted in the filter mounting portion 17Ba Place on ₂ and adhere.

Fitting portion 17Bb is opposite to the cylindrical portion 17Bb ₁ having a large diameter of the insertion opening 17Bb ₁₁ for inserting the upstream end 30a of the disk-shaped electric blower 30, the insertion opening 17Bb ₁₁ of cylindrical portion 17Bb ₁ a small-diameter communication hole 17Bb ₁₂ of which is provided on a stepped portion 17Bb ₁₃ provided between the inner peripheral surface and the communicating hole 17Bb ₁₂ of cylindrical portion 17Bb _1, the insertion opening in the outer peripheral surface of the cylindrical portion 17Bb ₁ A plurality (four in this case) of locking projections 17Bb ₁₄ are provided on the 17Bb ₁₁ side at equal intervals in the circumferential direction. By fitted into the upstream end 30a of the electric blower 30 into the fitting portion 17Bb, the packing 30a ₁ provided on the upstream end 30a of the electric blower 30 is in close contact abuts against the stepped portion 17Bb _13.

  As shown in FIG. 6, in the upstream second member 17 </ b> B, the rotation axis P of the electric blower 30 is oblique to the direction in which the driving device 10 moves forward (the direction of the arrow X) in plan view. A connecting portion 17Bc is formed integrally between the filter mounting portion 17Ba and the fitting portion 17Bb so that the upstream end portion 30a can be fitted into the fitting portion 17Bb. , FIG. 8). By disposing the fitting portion 17Bb obliquely with respect to the filter mounting portion 17Ba, even if the first member 17A is arranged along the upstream second member 17B (in this case, the left side), the first member 17B can be disposed. There is no need to form an outer protrusion on the housing 11 by the member 17A, and the appearance of the drive device 10 can be improved. In the first embodiment, since the portion on the suction side (connection port 17Aa side) of the first member 17A is arranged below the filter mounting portion 17Ba, the connection portion 17Bc is formed in a shape that does not interfere with the first member 17A. I have.

As shown in FIGS. 6, 7 and 9, the downstream second member 17 </ b> C includes a case portion 17 </ b> Ca having a ventilation window 17 </ b> Ca ₁₁₁ that houses the electric blower 30 and allows an airflow flowing out of the electric blower 30 to flow therethrough. And a soundproof sheet portion 17Cb having air permeability provided on the inner surface side of the portion 17Ca.
Case portion 17Ca includes a case body 17Ca _1, and a cover member 17Ca ₂ attached to the case body 17Ca _1.

Case body 17Ca ₁ is to house the electric blower 30 and a frame-shaped cylindrical portion 17Ca ₁₁ having a plurality of said vent window 17Ca _111, substrate housing formed integrally with Wakugata cylindrical portion 17Ca ₁₁ to house the circuit board 90 and a part 17Ca _12. The circuit board 90 is electrically connected to the electric blower 30 via a lead wire (not shown).

Framed cylindrical portion 17Ca ₁₁ includes a plurality of sandwiching the one long side portion of the large rib 17Ca ₁₁₂ and soundproofing sheet 17Cb sandwich the one end portion 17Cb ₁ and the other end portion 17Cb ₂ soundproofing sheet 17Cb wound into a cylindrical shape smaller the ribs 17Ca ₁₁₃ which has an inner surface, a plurality of locking pieces 17Ca ₁₁₄ having an upstream side plurality of engagement projections 17Bb ₁₄ and lockable hole of the fitting portion 17Bb of the second member 17B of the intake side of the outer surface It is provided at the opening edge.

Large ribs 17Ca ₁₁₂ has a pressing piece portion 17Ca ₁₁₂₂ extending circumferentially from the protrusion portion 17Ca ₁₁₂₁ and protrusion portion 17Ca ₁₁₂₁ that protrudes toward the center from the inner surface of the frame-shaped cylindrical portion 17Ca _11, from the front It is formed in a T-shaped cross section when viewed.
Small ribs 17Ca ₁₁₃ is formed in a L-shaped bent from the inner surface of the frame-shaped cylindrical portion 17Ca ₁₁ projecting towards the center and forwardly.

Substrate housing portion 17Ca ₁₂ has a rectangular wall portion 17Ca ₁₂₁ serving as a bottom of the frame-shaped cylindrical portion 17Ca _11, and an outer peripheral wall portion 17Ca ₁₂₂ provided on the outer peripheral portion of the rectangular wall portion 17Ca _121.
Rectangular walls 17Ca ₁₂₁ is formed in a size that protrudes to the left side than the structure vital Wakugata cylindrical portion 17Ca ₁₁ the bottom of the frame-shaped cylindrical portion 17Ca _11, has a large number of vent holes 17Ca _1211. Incidentally, since the disposed insertion portion 17Bb obliquely to the filter mounting portion 17Ba of the upstream second member 17B as described above, be formed in a size rectangular wall portion 17Ca ₁₂₁ protrudes to the left side housing It is not necessary to form a protrusion on the appearance of 11.

Further, the rectangular wall portion 17Ca _121, together with a circular recess 17Ca ₁₂₁₂ which fitted into the end portion of the motor portion 30b of the electric blower 30 to the center position of the portion to be the bottom of the frame-shaped cylindrical portion 17Ca _11, the end of the motor section 30b a rectangular recess 17Ca ₁₂₁₃ for accommodating a not shown rubber cushion support has a circular recess 17Ca in ₁₂₁₂ parts. Incidentally, the window portion 17Ca ₁₂₁₄ substantially rectangular is provided with a rectangular recess 17Ca _1213.

Cover member 17Ca ₂ includes an outer peripheral wall portion 17Ca ₁₂₂ and the outer peripheral wall portion 17Ca ₂₁ to be fitted in the case body 17Ca ₁ substrate storage portion 17Ca _12, rear wall 17Ca provided on the rear end side of the outer peripheral wall portion 17Ca _{21 22} and vent holes 17Ca ₂₂₁ are provided on both left and right sides of the rear wall portion 17Ca ₂₂ . Note that the substrate housing portion 17Ca ₁₂ of the cover member 17Ca ₂ and the case body 17Ca _1, disengagement mechanism and the upstream second member 17B and the case body 17Ca ₁ is connected detachably (locking projections 17Bb ₁₄ and engagement detachably connected by locking pieces 17Ca ₁₁₄₎ a similar mechanism.

Soundproofing seat 17Cb is made of, for example, a foamed resin sheet or a resin fiber nonwoven fabric or the like having air permeability and flexibility, the width inner depth equivalent to the case body 17Ca ₁ frame-shaped cylindrical portion 17Ca ₁₁ and a rectangular sheet having inner equivalent length and circumference of the frame-shaped cylindrical portion 17Ca _11.

Soundproofing seat 17Cb is accommodated in one longitudinal end portion 17Cb ₁ and the other end portion 17Cb ₂ and so as to abut the cylindrical wound with the framed cylindrical portion 17Ca ₁₁ of the case portion 17Ca. At this time, it is pressed so that one end portion 17Cb ₁ and the other end portion 17Cb ₂ soundproofing sheet portion 17Cb is not assed by protruding portions abutted on 17Ca ₁₁₂₁ and pressing piece portion 17Ca ₁₁₂₂ large ribs 17Ca _112. Also, it is pressed so that one of the long sides of the soundproofing sheet portion 17Cb is not assed by a plurality of small ribs 17Ca _113.

Thus, by positioning and fixing the soundproofing sheet portion 17Cb along the inner peripheral surface of the frame-shaped cylindrical portion 17Ca _11, be made to function soundproofing sheet portion 17Cb as the outer peripheral wall having a breathable Wakugata cylindrical portion 17Ca ₁₁ Can be. That is, since the airflow spouting radially from the outer peripheral portion of the electric blower 30 can be passed through the soundproof sheet portion 17Cb disposed on the outer peripheral side of the electric blower 30, the flow of the exhaust air from the electric blower 30 becomes smooth. . Further, it is possible to efficiently cool the circuit board 90 through a portion of the airflow passing through the soundproofing sheet portion 17Cb the substrate housing portion 17Ca ₁₂ inside. Incidentally, the airflow cooling the circuit board 90 flows toward the cord reel 40 through the vent 17Ca ₂₂₁ of the cover member 17Ca ₂ (Figure 2).

<Configuration of dust collector>
As shown in FIGS. 1 to 3, the dust collecting device 20 includes a dust cup 21 and a centrifugal separation unit 22 as a dust separating unit detachably mounted on the dust cup 21.

[Dust cup]
Dust cup 21 has a body portion 21a of the cylindrical and a bottom portion 21b provided to be opened and closed through a hinge portion 21b ₁ to the lower end opening of the body portion 21a, the upper end opening of the body portion 21a is centrifuged It is a mounting opening for detachably mounting the separation unit 22.
Further, the dust cup 21, together with the air inlet 21a ₂ which opens onto the tangential direction of the outer peripheral surface is provided on the body portion 21a, the outer peripheral portion of the lower end opening and the bottom portion 21b of the body 21a bottom 21b Is provided with a lock portion 21c for releasably locking the closed state.

  In the dust cup 21 in which the centrifugal separation unit 22 is mounted, a relatively large first dust is collected in a space around an inner cylindrical portion 22Aa of a first centrifugal separator 22A described later of the centrifuge unit 22.

[Centrifugation unit]
As shown in FIG. 2, the centrifugal separation unit 22 includes a cylindrical first centrifuge 22A for separating the first dust in the air, and a first centrifuge separated around the first centrifuge 22A. A second centrifuge 22B including a plurality of centrifuge cylinders 22Ba for separating second dust smaller than the first dust in the air passing through the portion 22A.

  In the case of the first embodiment, the centrifugal separation unit 22 is provided between the second centrifugal separator 22B and the cup 22Ab so as to be rotatable with respect to a later-described cup 22Ab of the first centrifuge 22A. It further has a wiper part 22C and a rotation part 22D that covers the second centrifugal separation part 22B so as to rotate the wiper part 22C.

The first centrifugal separator 22A has an inner cylindrical portion 22Aa for communicating the inside of the dust cup 21 with the second centrifugal separator 22B, an insertion hole for inserting the inner cylindrical portion 22Aa, and a fitting for fitting the second centrifugal separator 22B. And the cup portion 22Ab having an abutment.
The inner cylindrical portion 22Aa has a compression screw portion 22Aa _2, and a cylindrical tubular frame portion formed by the wound mesh member 22Aa ₁₁₁ to the outer peripheral wall.
The second centrifugal separator 22B is formed by integrating a plurality of (in this case, ten) double cylindrical centrifuges 22Ba on the same circle.

The centrifugal separation unit 22 rotates the second centrifugal separation unit 22B, the wiper unit 22C, and the inner cylinder 22Aa by rotating the handle-shaped rotating unit 22D in a predetermined direction (in this case, clockwise). the dust in the cup portion 22Ab at the wiper unit 22C causes drop in the dust cup 21 to, are composed of compression screw portion 22Aa ₂ which rotates to compress the dust in the dust cup 21.

<Operation and maintenance of the vacuum cleaner>
As shown in FIG. 1, a vacuum cleaner main body 1 of a vacuum cleaner according to the present invention is connected to a flexible hose having a handle and an operation unit (not shown), an extension pipe, and a suction port during cleaning.
When the power is turned on by the operation unit, the electric blower 30 is driven, and the dust on the surface to be cleaned is sucked together with the air to be cleaned. The air containing dust sucked into the suction opening body is sucked into the cleaner body 1 via the extension pipe and the flexible hose.

Hereinafter, the flow of air in the cleaner body 1 will be described with reference to FIGS. The air flow, in that order of arrows F ₁ to F ₁₀ in FIG.
The air containing dust first flows into the suction port 11b of the driving device 10 (arrow F ₁ ), and flows through the first ventilation path 17a (inside the first member 17A) between the suction port 11b and the first ventilation port 11c. As shown by the arrow F ₂ , the air flows into the air inlet 21 a ₂ of the dust cup 21 of the dust collector 20 (arrow F ₃ ).

The air containing dust that has flowed into the dust cup 21 turns inside the dust cup 21, during which the relatively large first dust turns around the inner peripheral surface side of the dust cup 21 due to centrifugal force to remove fine dust. including air toward the mesh member 22Aa ₁₁₁ (arrow F _4). As a result, relatively large first dust collects in the dust cup 21.

Air containing first second dust finer than the dust which has passed through the mesh portion 22Aa ₁₁₁ flows into the first centrifugal separator unit 22A (arrow F _5), a plurality of centrifugation second centrifugation unit 22B It flows into the inside of the separation cylinder 22Ba and turns along the inner peripheral surface.

The air containing the second dust is swirled along the inner peripheral surface of the centrifuge tube 22Ba, so that the second dust is centrifuged and collected in the centrifuge unit 22. Meanwhile, the air second dust has been removed, it passes through the filter 50 of the driving device 10 through the interior of a plurality of centrifuge tube 22Ba (arrow F ₆₎ from the air discharge port 22Da ₁₂ of the rotation unit 22D It flows into the second vent hole 11d (arrow F _7). At this time, finer dust than the second dust not captured by the plurality of centrifuge cylinders 22Ba is captured by the filter 50.

The purified air that has flowed into the drive device 10 passes through the upstream second ventilation path 17b (inside the upstream second member 17B) between the second ventilation port 11d and the electric blower 30, and the electric blower 30 The air that flows into the inside and flows out from the outer peripheral portion of the electric blower 30 passes through the downstream second ventilation path 17c. At this time, the air cools the circuit board 90 and flows directly to the substrate housing portion 17Ca ₁₂ inside, or to cool the circuit board 90 flows into the board housing portion 17Ca ₁₂ in after passing the soundproofing sheet portion 17Cb, Alternatively, it flows toward the code reel 40 after passing through the soundproof sheet portion 17Cb (arrow F ₈ ).

Air flowing into the board housing portion 17Ca ₁₂ in the joins the air flowing toward the cord reel 40 to flow out from the cover member 17Ca inside _2, wraparound around the cord reel 40 (arrow F _9), from an exhaust port 11e ₁ It is discharged to the outside (arrow F _10).

Next, maintenance of the cleaner body 1 after cleaning will be described.
First compression of dust accumulated in the dust removal and dust cup 21 of the mesh member 22Aa ₁₁₁ of the dust collecting device 20 is performed at the same time by turning the handle Dc ₁ of the rotational portion 22D in a predetermined direction. At this time, dust removal and compression can be performed while the dust collection device 20 is attached to the drive device 10. However, appropriate dust removal and compression can be performed by removing the dust collection device 20 from the drive device 10 and removing the dust collection device. It is desirable to carry out in a state where 20 is raised.

When removing the dust collecting device 20 mounted on the drive 10, by pulling grip the handle 22Dc ₁ of the dust collecting device 20 by hand, the dust collector engaged with the pair of engaging recesses 11g of the driving device 10 since the pair of locking claws 22Db ₂ of 20 disengages from the engagement recess 11g swings, the user can detach the dust collecting device 20 with operation of one step of pulling a handle 22Dc _1. Handle 22Dc _1, the diameter of the handle body 22Dc ₁₁ cylindrical to facilitate gripping by hand is smaller toward downward.

The dust collecting device 20 is detached from the drive 10, is placed in an upright state on a stable surface such as a floor surface, turn the steering wheel 22Dc ₁ in the direction of the arrows shown in the handle 22Dc ₁ (clockwise) . Thus, the second centrifugally separating part 22B which is connected to the handle 22Dc ₁ is rotated.
By the second centrifugation unit 22B rotates, the compression screw portion 22Aa ₂ of the inner cylindrical portion 22Aa of the first centrifugation unit 22A rotates, the first dust accumulated on the bottom of the dust cup 21 is compressed .

When discarding the first dust in the dust cup 21, pressing the lock release button 21 of the lock portion 21c opens the bottom 21b, and the first dust in the dust cup 21 falls and is discarded. At this time, since the inner cylindrical portion 22Aa is lowered, the second dust accumulated in the cup portion 22Ab is also discarded through the inner cylindrical portion 22Aa.
In addition, since the dust collecting device 20 can be disassembled into the dust cup 21, the first centrifugal separator 22A, the second centrifugal separator 22b, and the rotating unit 22d, these can be washed with water.
It is also recommended that the filter 50 be periodically removed and washed.
After cleaning the dust collecting device 20 and the filter 50, they are assembled and attached to the drive device 10 before using the vacuum cleaner.

(Embodiment 2)
In the first embodiment, the case where the dust collecting device 20 is mounted on the driving device 10 by laying the dust collecting device 20 sideways is illustrated. However, the dust collecting device 20 may be mounted on the driving device 10 in a standing state. In this case, the upstream second member 17B shown in FIG. 6 is arranged above and the downstream second member 17C is arranged below, so that air flows in from above the electric blower 30. In the first member 17A, the position of the first ventilation port 11c is not changed, and the connection port 17Aa is disposed in front of the downstream second member 17C.

(Embodiment 3)
In the first embodiment, the case where the centrifugal separation unit 22 that is the dust separation unit of the dust collection device 20 is a multi-cyclone system including the first and second centrifugal separation units 22A and 22B has been described. For example, a filter may be used instead of the second centrifugal separator 22B.
According to this configuration, it is possible to realize a double filter system in which the filter on the dust collecting device side and the filter on the driving device side.

(Summary)
The vacuum cleaner of the present invention includes a driving device housing an electric blower therein, and a dust collector capable of separating the dust from air containing the dust,
The driving device includes a dust collection device mounting portion to which the dust collection device is detachably mounted, a suction port that takes in dust-containing air therein, and an air communication device that communicates with the suction port and includes dust-containing air. A first ventilation path leading into the dust collection device mounted on the mounting portion, and a second ventilation path through which air from which the dust from the dust collection device mounted on the dust collection device mounting portion is separated is circulated. A filter provided on the upstream side of the electric blower in the airflow direction in the second ventilation path, and an exhaust port for discharging air from which dust flowing through the second ventilation path has been removed to the outside,
The electric blower is disposed in the second ventilation path,
The second ventilation path is configured to include an upstream member that connects the filter and an upstream end in the airflow direction of the electric blower,
The upstream side member has a filter mounting portion for detachably mounting the filter, and a fitting portion formed integrally with the filter mounting portion and fitting the upstream end portion of the electric blower.

The vacuum cleaner of the present invention may be configured as follows, and may be appropriately combined.
(1) The second ventilation path further includes a downstream member that houses the electric blower,
The downstream member, a case portion having a ventilation window that houses the electric blower and allows an airflow flowing out of the electric blower to flow, and a soundproof sheet portion having air permeability provided on an inner surface side of the case portion. You may have.
According to this configuration, since the airflow flowing out of the electric blower can be passed through the soundproof sheet portion without leakage, it is not necessary to have a centralized exhaust structure, and the weight can be reduced by using the case portion.

(2) The soundproof sheet has flexibility and is wound in a cylindrical shape so as to abut one end and the other end in the longitudinal direction, and is accommodated in the case portion,
The case portion may have a rib on an inner surface side that sandwiches the one end portion and the other end portion of the soundproof sheet wound in a tubular shape.
According to this configuration, one end and the other end of the soundproof sheet are pressed down and fixed to the inner peripheral surface side of the case section by the ribs, so that no gap is formed between the soundproof sheet and the case section. be able to. In addition, the ribs enable the soundproof sheet to be positioned and facilitate assembly.

(3) The driving device further includes a circuit board electrically connected to the electric blower,
The case portion of the downstream member includes a frame-shaped cylindrical portion that houses the electric blower and has a plurality of ventilation windows, and a board storage portion that is integrally formed with the frame-shaped cylindrical portion so as to store the circuit board. And
A vent hole may be provided in the substrate storage part.
According to this configuration, the airflow that has flowed out of the electric blower passes through the soundproof sheet portion and the frame-shaped cylindrical portion, and then flows into the substrate storage portion to cool the circuit board. In addition, since the board storage portion is formed integrally with the frame-shaped cylindrical section, the number of separate components for fixing the circuit board in the second ventilation path can be reduced. Thus, the number of parts and the number of assembling steps of the driving device can be reduced.

(4) The driving device is configured to be able to advance on a floor surface,
The fitting portion may be configured to fit the upstream end such that a rotation axis of the electric blower is oblique to a direction in which the driving device moves forward in a plan view.
According to this configuration, a space is provided on one of the left and right sides of the electric blower in the second ventilation path, and another member can be disposed in this space.

  The disclosed embodiments are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

Reference Signs List 10 drive device 11b suction port 11e ₁ exhaust port 12 dust collector mounting section 17a first ventilation path 17B upstream second member 17b upstream second ventilation path 17Ba filter mounting section 17Bb fitting section 17C downstream second member 17c downstream section second ventilation path 17Ca case 17Ca ₁₁ frame-shaped cylindrical portion 17Ca ₁₂ substrate housing portion 17Ca ₁₁₁ ventilation window 17Ca ₁₁₂ large ribs 17Ca ₁₂₁₁ vents 17Cb soundproofing sheet portion 17Cb ₁ one end 17Cb ₂ other end portion 20 dust collector 30 electric blower 30a Upstream end 50 Filter 90 Circuit board P Rotation axis

Claims (5)

A drive device containing an electric blower therein, and a dust collection device capable of separating the dust from air containing dust,
The driving device includes a dust collection device mounting portion to which the dust collection device is detachably mounted, a suction port that takes in dust-containing air therein, and an air communication device that communicates with the suction port and includes dust-containing air. A first ventilation path leading into the dust collection device mounted on the mounting portion, and a second ventilation path through which air from which the dust from the dust collection device mounted on the dust collection device mounting portion is separated is circulated. A filter provided on the upstream side of the electric blower in the airflow direction in the second ventilation path, and an exhaust port for discharging air from which dust flowing through the second ventilation path has been removed to the outside,
The electric blower is disposed in the second ventilation path,
The second ventilation path is configured to include an upstream member that connects the filter and an upstream end in the airflow direction of the electric blower,
The electric member comprising: a filter mounting portion for detachably mounting the filter; and a fitting portion formed integrally with the filter mounting portion to fit the upstream end portion of the electric blower. Vacuum cleaner. The second ventilation path is configured to further include a downstream member that houses the electric blower,
The downstream member, a case portion having a ventilation window that houses the electric blower and allows an airflow flowing out of the electric blower to flow, and a soundproof sheet portion having air permeability provided on an inner surface side of the case portion. The vacuum cleaner according to claim 1 having. The soundproof sheet has flexibility and is wound in a cylindrical shape so as to abut one end and the other end in the longitudinal direction, and is housed in the case portion,
The vacuum cleaner according to claim 2, wherein the case portion has a rib on an inner surface side that sandwiches the one end and the other end of the soundproof sheet wound in a tubular shape. The driving device further includes a circuit board electrically connected to the electric blower,
The case portion of the downstream member includes a frame-shaped cylindrical portion that houses the electric blower and has a plurality of ventilation windows, and a board storage portion that is integrally formed with the frame-shaped cylindrical portion so as to store the circuit board. And
The vacuum cleaner according to claim 2, wherein a ventilation hole is provided in the substrate storage unit. The drive device is configured to be able to advance on the floor surface,
The said fitting part is comprised so that the said upstream end part may be fitted so that the rotational axis of the said electric blower may become an oblique direction with respect to the direction which the said drive device advances in planar view. The vacuum cleaner according to any one of items 1 to 4.

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