JP2020081458A - Dust collection device of vacuum cleaner and vacuum cleaner comprising the same - Google Patents

Abstract

To provide a dust collection device of a vacuum cleaner that improves maintainability, and the vacuum cleaner comprising the same.SOLUTION: A dust collection device of a vacuum cleaner comprises: a dust collection container comprising a peripheral wall part comprising a transparent portion in at least a portion, a bottom part on a lower end side of the peripheral wall part, and an upper opening part on an upper end side of the peripheral wall part; a dust separation part detachably fitted to the upper opening part of the dust collection container; and a wiper mechanism part comprising a wiper member capable of being in sliding contact with an inner surface of the transparent part of the peripheral wall part in the dust collection container.SELECTED DRAWING: Figure 5

Description

The present invention relates to a dust collector for an electric vacuum cleaner and an electric vacuum cleaner including the same.

As a conventional electric vacuum cleaner, Patent Document 1 proposes a cyclone-type electric vacuum cleaner including a drive device having a built-in electric blower and a dust collector detachably mounted on the drive device. ..
In this vacuum cleaner, the dust collecting device includes a dust collecting container and a centrifugal separation unit detachably attached to the dust collecting container. The dust collecting device has an inner first dust collecting chamber and an outer second dust collecting chamber provided around the first dust collecting chamber. The centrifuge unit centrifuges the first centrifugal separation unit that centrifuges the dust into the first dust collection chamber and the second dust smaller than the first dust that has passed through the first centrifugal separation unit into the second dust collection chamber. And a second centrifuge portion provided around the first centrifuge portion so as to be separated.

JP, 2008-33689, A

In the conventional cyclone type vacuum cleaner, the dust collecting container is made of a transparent material so that the user can visually check the amount of dust accumulated in the dust collecting container from the outside. If dust adheres to the inner surface of the chamber, the amount of dust in the inner first dust collecting chamber may be difficult to see.

The present invention has been made in view of the above problems, and an object thereof is to provide a dust collecting device for an electric vacuum cleaner, which has improved maintainability, and an electric vacuum cleaner including the same.

According to the present invention, a dust collecting container having a peripheral wall portion having at least a transparent portion, a bottom portion on the lower end side of the peripheral wall portion, and an upper opening portion on the upper end side of the peripheral wall portion, and the dust collecting container above the dust collecting container. A dust collector for an electric vacuum cleaner including a dust separating portion detachably attached to the opening, and a wiper mechanism portion having a wiper member slidable in contact with an inner surface of the transparent portion of the peripheral wall portion of the dust collecting container. A device is provided.
Further, according to the present invention, there is provided an electric vacuum cleaner including a drive device having a built-in electric blower and the dust collecting device detachably attached to the drive device.

The maintainability of the dust collector is improved.

It is a perspective view which shows the vacuum cleaner of Embodiment 1 of this invention. It is a perspective view showing the cleaner body in the vacuum cleaner of the first embodiment. It is sectional drawing seen from the left side of the cleaner body of Embodiment 1. It is the perspective view which looked the drive device in the cleaner body of Embodiment 1 from the upper part. FIG. 3 is a cross-sectional view of the dust collecting device mounted on the drive device according to the first embodiment, as viewed from the front. FIG. 3 is a perspective view showing a state in which a bottom portion of the dust collecting container in the dust collecting apparatus according to the first embodiment is opened. FIG. 3 is a perspective view showing the dust container of the first embodiment. FIG. 3 is a cross-sectional view showing internal structures of a second centrifugal separation unit and an inner cylinder unit in a disassembled state of the dust collector of the first embodiment. It is the perspective view which looked at the 2nd centrifugation unit of Embodiment 1 from the lower part. (A) is the top view which looked at the assembly of the 2nd centrifugation unit and the inner cylinder unit from the upper side, (B) is the II sectional view taken on the line of (A). FIG. 3 is a cross-sectional view of the dust collector according to the first embodiment as viewed from the front. It is sectional drawing which shows the state which the bottom part of the dust collection container in the dust collector of FIG. 11 opened. It is a perspective view which shows the vacuum cleaner of Embodiment 2 of this invention. It is sectional drawing seen from the left side of the cleaner body of Embodiment 2. It is a perspective view which shows the state which removed the dust collector from the drive device of the cleaner body of Embodiment 2. It is a perspective view which shows the dust collector of Embodiment 2. FIG. 6 is a cross-sectional view showing a state in which a bottom part of a dust collecting container in the dust collecting device of the second embodiment is opened. It is an exploded view of the dust collector of Embodiment 2. FIG. 19 is an exploded view of the centrifugal separation unit in the disassembled dust collector of FIG. 18.

(Embodiment 1)
1 is a perspective view showing an electric vacuum cleaner according to a first embodiment of the present invention, FIG. 2 is a perspective view showing a cleaner body of the electric vacuum cleaner according to the first embodiment, and FIG. 3 is a vacuum cleaner according to the first embodiment. It is sectional drawing seen from the left side of a main body, and FIG. 4 is the perspective view which looked at the drive device in the cleaner main body of Embodiment 1 from above. In addition, in FIG. 2, the direction of the front false left, right, up, and down of the cleaner body is indicated by arrows.

As shown in FIG. 1, the electric vacuum cleaner A according to the first embodiment includes a cleaner body 10A, a flexible hose 60 detachably connected to the cleaner body 10A, and an air flow direction of the flexible hose 60. Operation handle 70 provided at the upstream end of the flexible hose 60, an extension pipe 80 detachably connected to the upstream end of the flexible hose 60, and a suction port body 90 detachably connected to the extension pipe 80. It is a canister-type vacuum cleaner equipped with and. The suction port body 90 can be connected to the upstream end of the flexible hose 60.

As shown in FIGS. 1 to 4, the cleaner body 10A includes a drive device 20 having a pair of left and right wheels 21a, a front wheel 21b, and a rear wheel 21c, and a cyclone-type dust collecting device detachably attached to the drive device 20. And a device 30.

<About drive unit>
As shown in FIGS. 2 to 4, the drive device 20 includes a connecting portion 21d and a handle 21e, which are provided on the front portion of a casing 21 that forms the appearance of the driving device 20, and a casing for discharging the internal air to the outside. An exhaust port 21 f provided at a rear portion of the housing 21 and an electric blower 22 provided inside the housing 21 are provided. Further, a cord reel (not shown) having a plug connectable to a commercial power source (outlet) is provided at the rear of the housing 21.

Further, the drive device 20 is provided with a mounting portion 21g for accommodating the dust collecting device 30 in the front and removably mounting it, and a connecting portion 21d connected to the flexible hose 60 is mounted on the mounting portion 21g. It is provided so as to project forward from.
The mounting portion 21g is formed in a bottomed cylindrical shape having a window portion on the outer peripheral surface and inclined slightly obliquely rearward, and a protruding portion 21ga protruding obliquely upward is provided in the central portion of the bottom surface thereof. At the same time, a plurality of pins 21gb are provided on the periphery of the bottom surface.

Further, in the drive device 20, an intake port 21h is provided on the opposite side of the connection part 21d in the mounting part 21g, a seal member 21ha is provided around the intake port 21h, and a locking recess is provided near the intake port 21h. 21i is provided.
When the dust collector 30 is attached to the drive device 20, the cleaner body 10A is configured such that the connecting portion 21d communicates with an inflow port 31ac of the dust collector 30 described later, and the suction port 21h collects dust. It is configured to communicate with the outlet 32bf of the device 30.

The electric blower 22 has a blower fan for performing intake air, and a blower drive motor that rotationally drives the blower fan. The drive device 20 has a built-in control device (not shown) that totally controls the electric vacuum cleaner A. The control device has a control unit such as a CPU, a RAM, and a ROM. Specifically, in the control device, the CPU executes various processes according to the control program stored in the ROM.

In the electric vacuum cleaner A, the electric blower 22 built in the cleaner main body 10A is operated to inhale air from the suction port body 90 (see FIG. 1). Then, the dust-containing air sucked from the suction port body 90 is introduced into the inflow port 31ac of the dust collecting device 30 from the connecting portion 21d, as shown in FIG. The air sucked in the dust collector 30 is sucked from the intake port 21h of the drive device 20 in a state where the dust is centrifugally separated and the dust is removed. The arrow X in FIG. 3 indicates a ventilation path (separation path) from the connection portion 21d of the drive device 20 to the intake port 21h.

Further, as shown in FIG. 3, the air sucked from the intake port 21h of the drive device 20 is exhausted to the outside from the exhaust port 21f at the rear part of the drive device 20 through the ventilation path (exhaust path) Y shown by the arrow. It The ventilation path Y passes through the electric blower 22 to collect metal powder, dust, and the like generated from the electric blower 22 with the filter 23, and passes through the control device. Therefore, the control device is cooled by the air flowing through the ventilation path Y.

<About dust collector>
5 is a cross-sectional view of the dust collector installed in the drive unit of the first embodiment as seen from the front, and FIG. 6 shows a state in which the bottom of the dust container in the dust collector of the first embodiment is open. It is a perspective view. 7 is a perspective view showing the dust collecting container of the first embodiment, and FIG. 8 is a sectional view showing the internal structure of the second centrifugal separation unit and the inner cylinder unit in the disassembled state of the dust collecting device of the first embodiment. Yes, FIG. 9 is a perspective view of the second centrifugal separation unit of the first embodiment as viewed from below. 10(A) is a plan view of the assembly of the second centrifugal separation unit and the inner cylinder unit as viewed from above, and FIG. 10(B) is a sectional view taken along the line I-I of FIG. 10(A).

As shown in FIGS. 5 to 7, the dust collecting device 30 includes a dust collecting container 31, a cup cover unit 32 that covers the upper opening 31 c of the dust collecting container 31, and an inner cover provided on the lower surface of the cup cover unit 32. And a cylinder unit 33.

[Dust container]
The dust container 31 has a cylindrical transparent peripheral wall portion (container body) 31a having the upper opening portion 31aa and the lower opening portion 31ab, and a bottom portion (bottom lid) that covers the lower opening portion 31ab of the peripheral wall portion 31a so as to be opened and closed. 31b and has a first dust collecting chamber 31c arranged on the inner side (center side) and a second dust collecting chamber 31d arranged around the first dust collecting chamber 31c. is doing.
The first dust collecting chamber 31c is provided with the inner cylinder unit 33 that constitutes a first centrifugal separation section, and the second dust collecting chamber 31d is provided with a later-described centrifugal separation unit 32a of the cup cover unit 32.

The second dust collecting chambers 31d are arranged at opposite left and right positions on the outer peripheral portion of the first dust collecting chamber 31c, and the inner side wall of each second dust collecting chamber 31d includes the outer peripheral surface of the first dust collecting chamber 31c. Is configured. That is, the peripheral wall portion 31a of the dust container 31 has a double wall structure on the left and right sides.
Further, the peripheral wall portion 31a is provided with the inflow port 31ac in the front portion of the first dust collecting chamber 31c which is not surrounded by the pair of left and right second dust collecting chambers 31d, and the suction port body 90 (see FIG. 1). The air containing the dust sucked from the air is configured to flow into the first dust collecting chamber 31c through the inflow port 31ac.

An outer seal member 31e is provided on the outer peripheral portion of the lower end of the peripheral wall portion 31a so as to be in close contact with the inner surface of the outer peripheral portion of the closed bottom portion 31b.
The bottom portion 31b is formed in a shape corresponding to the lower end outer peripheral portion of the peripheral wall portion 31a, and the inner surface thereof has an annular shape that can be in close contact with the lower end portion of the cylindrical peripheral wall portion 31a forming the first dust collecting chamber 31c. The inner seal member 31f is provided.
Further, the bottom portion 31b is provided with a conical cylindrical ridge 31ba at the center of the circle of the inner seal member 31f, and a cylindrical link pin 31bb is attached to the ridge 31ba so as to be vertically slidable. Since the link pin 31bb has the outer flange 131bb at the base end, the movable range of the tip (upper end) of the link pin 31bb is such that the outer flange 131bb is perpendicular to the bottom 31b within the raised portion 31ba. You are limited to the range you can move to.

Further, a hole portion 31bc having an inner diameter smaller than the outer diameter of the outer flange 131bb of the link pin 31bb is formed at the lower end portion of the raised portion 31ba, and the protruding portion 21ga (of the drive device 20) in the hole portion 31bc ( 4) can be inserted.
The bottom portion 31b is attached to the lower end outer peripheral portion of the peripheral wall portion 31a via a hinge portion (not shown). Further, a lower lock portion 31g is provided on the opposite side of the lower end outer peripheral portion of the peripheral wall portion 31a from the hinge portion (not shown), and an engaging portion on the outer peripheral surface of the bottom portion 31b opposite to the hinge portion (not shown). The stopper 31bd is provided, and the lower lock portion 31g releasably engages with the engaging portion 31bd to close the lower opening 31ab of the peripheral wall 31a so that the bottom 31b can open and close.

Further, an upper lock portion 31h is provided on the hinge portion side at the upper end outer peripheral portion of the peripheral wall portion 31a, and a not-shown locking portion is provided in the cup cover unit 32 described later, and the lower lock portion 31h is provided in the cup cover. The cup cover unit 32 is prevented from being abruptly removed from the dust collecting container 31 by being releasably locked to the locking portion of the unit 32.
Further, four hole portions 31be are formed on the outer peripheral side of the bottom portion 31b. The positions of these four holes 31be are positions where the bottom portion 31b of the dust collecting container 31 contacts the four pins 21gb when the dust collecting device 30 is placed on the placing portion 21g of the drive device 20. As a result, the four pins 21gb are inserted into the second dust collection chamber 31d of the dust collection container 31 through the holes 31be, and the wiper member 34a of the wiper mechanism portion 34 described below can be pushed up from below.

[Cup cover unit]
As shown in FIG. 3, FIG. 5, FIG. 6, and FIG. 8 to FIG. 10, the cup cover unit 32 includes a centrifugal separation unit 32a as a dust separation unit that is detachably fitted into the upper opening 31aa of the dust collection container 31. And an upper cover 32b detachably covering the upper portion of the centrifugal separation unit 32a.
The centrifuge unit 32a includes a lid portion 32aa that is removably fitted in the upper opening 31aa of the dust collecting container 31, and a pair of second centrifuge bodies 32ab that are vertically provided on the lower surface of the lid portion 32aa.
The pair of second centrifugal separators 32ab is provided with a wiper mechanism section 34 described later.

In the centrifuge unit 32a, the lid portion 32aa is a hollow body having a flat upper wall 32aaa, a lower wall 32aab, and a peripheral wall 32aac, and has a shape corresponding to the upper opening 31aa (see FIG. 7) of the dust container 31. Has been formed.
A lock portion 32ac is provided on a part of a peripheral wall 32aac of the lid 32aa so as to be releasably engaged with a part of an outer peripheral portion of the upper cover 32b. Further, on the side of the peripheral wall 32aac of the lid body 32aa opposite to the lock portion 32ac, a pivotal attachment portion 32ad that swingably connects the lid body 32aa and the upper cover 32b is provided.

Further, in the lid portion 32aa, an outer seal member 32ae which is in close contact with the outer peripheral portion of the upper opening 31aa of the dust container 31 is provided on the outer peripheral portion of the lower wall 32aab, and the outer peripheral surface of the upper surface of the upper wall 32aaa is provided. An upper seal member 32af is provided which can be in close contact with a lower end portion of a lower wall portion 32ba of the upper cover 32b, which will be described later.
In addition, a concave circulation hole 32ag that opens downward is formed in the center of the lower surface of the lid portion 32aa, and the upper end of the first dust collection chamber 31c in the peripheral wall portion 31a of the dust collection container 31 is formed around the circulation hole 32ag. An inner seal member 32ah that can be brought into close contact with the portion (see FIG. 7) is provided.

Further, a plurality of arc-shaped (in the present embodiment, a pair) upper locking grooves 132ag are provided on the lower surface of the cup cover unit 32, specifically, on the peripheral wall forming the flow hole 32ag. The plurality of upper locking grooves 132ag are locking portions for removably attaching an inner cylinder unit 33, which will be described later, to the lid portion 32aa, and stopper projections that prevent the inner cylinder unit 33 from rotating on one end side in the circumferential direction thereof. 132ah is provided.

Further, in the lid portion 32aa, a plurality of (eight in the present embodiment) short tubular outflow portions 32aad communicating with the pair of second centrifugal separators 32ab penetrate the upper wall 32aaa of the lid portion 32ab and the lower wall 32aab. And is formed in the vertical direction.
The second centrifuge 32ab includes a plurality of long tubular small centrifuges 32aba vertically extending from the lower surface of the upper wall 32aaa of the lid 32aa so as to surround each outflow portion 32aad and penetrating the lower wall 32aab. A connecting wall portion 232ab that integrally connects the plurality of small centrifuge bodies 32aba and an inflow hole 332ab provided in the vicinity of the outflow portion 32aad of each small centrifuge body 32aba.

In the case of the present embodiment, each small centrifuge 32aba is gradually reduced in diameter downward, and the lower end openings 432ab thereof open at the lower surface of the connecting wall 232ab. Further, when seen in a plan view, the second centrifugal separator 32ab is formed in an arc shape, and a pair is provided on the left and right. Further, each of the second centrifugal separators 32ab is provided with four small centrifugal separators 32aba, and the outflow portion 32aad is arranged at the position of each small centrifugal separator 32aba. Further, the lower end opening 432ab of each small centrifuge 32aba is eccentric toward the front or rear on the same circumference with respect to each outflow portion 32aad.

In the centrifuge unit 32a, a part of a pair of left and right wiper mechanism portions 34, which will be described later, can be slid vertically from the lower end surfaces of the pair of left and right second centrifuge bodies 32ab to the inside of the upper lid portion 32aa. A guide tube portion 32ax (see FIGS. 8 and 9) to be housed in is provided. In the case of the present embodiment, four guide cylinder portions 32ax are provided from the front and rear end positions on the lower end surfaces of the pair of left and right second centrifugal separators 32ab to the inside of the upper lid portion 32aa. The diameter of the lower end opening of each guide tube portion 32ax is smaller than the diameter of other portions.

According to the centrifuge unit 32a configured in this way, the air containing fine dust that has flowed into the flow hole 32ag from the inner cylinder unit 33 described later passes through the plurality of inflows 332ab and enters each small centrifuge 32aba. The fine dust is centrifugally separated from the air in each small centrifuge 32aba and falls into the second dust collecting chamber 31d of the dust collecting container 31, and the air from which the fine dust is removed flows in each 132ad. It passes through and flows out into the upper cover 32b.

As shown in FIGS. 3, 5, and 6, the upper cover 32b includes a lower wall portion 32ba that covers the centrifugal separation unit 32a, an intermediate wall portion 32bb that covers the lower wall portion 32ba, and an upper wall that covers the intermediate wall portion 32bb. The portion 32bc, the lock release handle 32bd pivotably attached to the front portion of the upper wall portion 32bc so as to be vertically swingable, and provided between the upper wall portion 32bc and the intermediate wall portion 32bb, and interlock with the lock release handle 32bd. And a lock mechanism portion 32be.
In the upper cover 32b, a ventilation passage is provided between the lower wall portion 32ba and the centrifugal separation unit 32a, and a rear portion of the lower wall portion 32ba is opened to serve as the discharge port 32bf.

The lock mechanism part 32be includes a locking claw 132be that releasably locks with the locking recess 21i (see FIG. 4) of the mounting part 21g of the drive device 20, a link part 232be that interlocks with the lock release handle 32bd, The linking portion 232be includes a biasing member 332be that elastically biases the locking claw 132be toward the locking recess 21i.

When the user pulls the lock release handle 32bd when the dust collecting device 30 is taken out from the drive device 20, the lock mechanism portion 32be pulls the link member 232be, the urging member 332be, and the locking claw 132be forward, and the lock mechanism portion 32be is engaged. The stop claw 132be is configured to be disengaged from the locking recess 21i.

[Wiper mechanism part]
11 is a cross-sectional view of the dust collecting apparatus of the first embodiment as seen from the front, and FIG. 12 is a cross-sectional view showing a state in which the bottom of the dust collecting container in the dust collecting apparatus of FIG. 11 is open.
As shown in FIG. 5, FIG. 8, FIG. 9, FIG. 11, and FIG. 12, a pair of left and right wiper mechanism portions 34 are provided corresponding to the pair of left and right second centrifugal separators 32 ab of the cup cover unit 32.
The wiper mechanism 34 includes a wiper member 34a, a pair of front and rear connecting bars 34b connected to the wiper member 34a, and connecting bars 34b for moving the wiper member 34a toward the bottom 31b of the dust collecting container 31. It has a pair of front and rear biasing members 34c for biasing.

The wiper member 34a is formed in a frame shape having substantially the same shape and size as the shape of the inner surface (inner peripheral surface) of the second dust collection chamber 31d of the dust collection container 31 viewed from above, and the front and rear ends of the wiper member 34a. Is wider than other portions for connecting the lower ends of the pair of front and rear connecting bars 34b.
As an example, the wiper member 34a is formed of a hard material such as hard resin on the inner peripheral portion inside (the hole side of the frame) from the portion connected to the connecting bar 34b, and the outer peripheral portion of the frame is the dust collecting container 31. In order to prevent the inner surface of the second dust collecting chamber 31d from being scratched, it is made of an elastic material such as rubber or soft resin. In this case, the inner peripheral portion of the hard material and the outer peripheral portion of the elastic material can be integrated by insert molding.
Further, the outer peripheral portion of the frame formed of an elastic material is thinner than other portions in a tongue shape in order to improve adhesion and slidability with the inner surface of the second dust collection chamber 31d of the dust collection container 31. You may form in.

The upper end of the connecting bar 34b is inserted into the guide tube portion 32ax through the hole on the lower end surface of the second centrifugal separator 32ab, and the outer bar provided at the upper end of the connecting bar 34b prevents the connecting bar 34b from coming out of the hole. ing.
The urging member 34c is a compression coil spring, is housed in the guide tube portion 32ax from the hole in the lower end surface of the second centrifugal separator 32ab, and presses the outer collar at the upper end of the connecting bar 34b downward.

As shown in FIGS. 3 to 5, when the dust collecting device 30 is placed on the placing portion 21g of the drive device 20, the four pins 21gb of the placing portion 21g are connected to the four holes of the bottom portion 31b of the dust collecting container 31. Pass through section 31be. At this time, the two left pins 21gb are inserted into the left second dust collection chamber 31d of the dust collection container 31, and the two right pins 21gb are inserted into the right second dust collection chamber 31d of the dust collection container 31. The lower surfaces of the front and rear ends of the pair of left and right wiper members 34a (positions substantially directly below the connecting bars 34b) are pushed up by the pins 21gb against the biasing force of the biasing members 34c. At this time, the outer peripheral portion of each wiper member 34a comes into sliding contact with the inner surface (inner peripheral surface) of each second dust collecting chamber 31d.

Further, by mounting the dust collecting device 30 on the mounting portion 21g of the drive device 20, the protruding portion 21ga of the mounting portion 21g of the drive device 20 is inserted into the hole portion 31bc of the bottom portion 31b of the dust collecting container 31. The link pin 31bb is pushed up, and thereby the inner cylinder unit 33 of the dust collector 30 described later is pushed up.

[Inner cylinder unit]
As shown in FIGS. 3, 5 and 8, the inner cylinder unit 33 is detachably mounted on the lower surface of the cup cover unit 32 and on the lower end of the inner cylinder portion 33a. And the compression mechanism portion 33b.

The inner cylindrical portion 33a is a cylindrical frame having a plurality of vertical slits 33aa, and the outer peripheral surface thereof is covered with a mesh member (not shown).
The inner cylindrical portion 33a has a plurality of upper locking pieces 33ab that are provided on the outer peripheral surface of the upper end of the annular shape and that are removably locked in the pair of upper locking grooves 132ag of the cup cover unit 32. There is.

The compression mechanism portion 33b includes a downwardly projecting compression portion 33ba that is movable in the vertical direction and is detachably connected to the lower end portion of the inner tubular portion 131, and a compression portion 33ba that is close to the outer peripheral portion of the inner tubular portion 33a. A cylindrical frame-shaped partition part 33bb provided above, and the partition part 33bb and the compression part 33ba, which are provided between the partition part 33bb and the compression part 33ba so as to be movable in the vertical direction, and the compression part 33ba with respect to the partition part 33bb. It has a compression coil spring 33bc that urges the dust container 110 toward the bottom 31b.

The assembly (see FIG. 10(B)) assembled by engaging the upper locking piece 33ab of the inner cylinder unit 33 with the upper locking groove 132ag of the cup cover unit 32 is mounted on the dust collecting container 31 to collect dust. The device 30 is configured. Then, when the dust collecting device 30 is attached to the mounting portion 21g of the drive device 20 as shown in FIGS. 2 to 5, the compression portion 33ba of the inner cylinder unit 33 is, as described above, the protruding portion 21ga and the link pin 31bb. The wiper member 34a is pushed up by the pin 21gb. As a result, a dust collecting space Sa is formed below the compression portion 33ba in the dust collecting container 31 (see FIG. 3).

<About the operation of the vacuum cleaner>
The operation of the electric vacuum cleaner according to this embodiment will be described below. As shown in FIGS. 1 to 3, first, when the electric vacuum cleaner A is operated, the control device of the drive device 20 operates the electric blower 22 to take in air from the suction port body 90 and to draw in air containing dust that has been taken in. Through the extension pipe 80 and the flexible hose 60 into the connecting portion 21d of the drive device 20 of the cleaner body 10A, and then into the dust collector 30. The air containing dust that has flowed into the inflow port 31ac of the dust collector 30 passes through the cup cover unit 32 via the ventilation path X shown by the arrow in FIG. 3, is discharged from the dust collector 30, and is driven by the drive device. 20 is sucked into the electric blower 22.

In the dust collector 30, the upper part of the dust container 31 acts as the first centrifugal separation unit Sa (cyclone unit). That is, in the dust collector 30, the first centrifugal separation unit Sa is a swirling air passage configured by the inner side surface of the first dust collection chamber 31c of the dust collection container 31, the outer peripheral surface of the inner cylindrical portion 33a, and the like. The inflow port 31ac is open in the tangential direction of the swirling air passage formed by the first centrifugal separation unit Sb. Therefore, the dust-containing air that has flowed in through the inflow port 31ac swirls in the swirling air passage formed by the first centrifugal separation unit Sb as in the ventilation passage X in FIG. It is centrifuged.

The relatively large coarse dust (first dust) among the dust centrifugally separated in the first centrifugal separation unit Sb is along the inner surface of the first dust collection chamber 31c of the dust collection container 31 due to the action of the centrifugal force. It falls and is accumulated in the dust collecting space Sa below the compression unit 33ba.
The air from which the coarse dust has been separated passes through the inner cylindrical portion 33a (see the ventilation path X in FIG. 2). At this time, the relatively small fine dust (second dust) that has not been separated by the first centrifugal separation unit Sb passes through the mesh member and the slit 33aa of the inner cylindrical portion 33a and rises together with the air flow.

On the other hand, coarse dust is filtered by a mesh member as a filter. The air that has passed through the inner cylindrical portion 33a flows into the centrifugal separation unit 32a of the cup cover unit 32. As shown in FIG. 3, FIG. 5, FIG. 8, FIG. 10(A) and FIG. 10(B), in the centrifugal separation unit 32a, the inflow hole 332ab into which dust-containing air flows is provided with a small centrifugal separator 32aba and an outflow portion 32aad. And an opening in the tangential direction of the swirling flow path of air (the second centrifugal separation unit Sc) formed between and. Therefore, the dust-containing air that has flowed in from the inflow hole 332ab swirls along the inner peripheral surface of the small centrifugal separator 32aba.

In the second centrifugal separation unit Sc, the swirling radius of the air containing dust is smaller than the swirling radius in the first centrifugal separating unit Sb, and the swirling speed is higher than the swirling speed in the first centrifugal separating unit Sb. Is designed to. Accordingly, in the dust-containing air that has passed through the first centrifugal separation unit Sb, fine dust smaller than the coarse dust separated by the first centrifugal separation unit Sb can be separated by the second centrifugal separation unit Sc. Therefore, due to the swirling of air in the second centrifugal separation unit Sc, fine dust (second dust) in the air including dust is centrifugally separated and drops along the inner peripheral surface of the small centrifugal separator 32aba, It enters the second dust collecting chamber 31d from the lower end opening 432ab through the hole of the frame of the wiper member 34a, and is finally collected on the bottom 31b in the second dust collecting chamber 31d. At this time, fine dust D (see FIG. 5) may adhere to the inner surface (inner peripheral surface) of the second dust collecting chamber 31d.

Then, the air from which the fine dust (second dust) has been separated passes through the cylindrical outflow portion 32aad provided in the central portion of each second centrifugal separation unit Sc, and the air is separated between the centrifugal separation unit 32a and the upper cover 32b. It is discharged to the space between them (see the ventilation path X in FIG. 3) and flows into the drive device 20 from the intake port 21h. Then, it is discharged to the outside through the ventilation path Y.

<Maintenance of dust collector>
After the cleaning is completed, when discarding the dust in the dust collecting container 31, the user can remove the dust collecting device 30 from the drive device 20 by lifting the lock release handle 32bd. At this time, as shown in FIG. 5 and FIG. 11, the dust container 30 is lifted from the mounting portion 21g of the drive device 20, so that the protruding portion 21ga of the mounting portion 21g is removed from the raised portion 31ba of the dust collecting container 31. Get out. As a result, in the compression mechanism portion 33b in the dust container 31, the compression portion 33ba moves downward due to the urging force of the compression coil spring 33bc, and the dust accumulated as a lump under the compression portion 33ba is compressed by the compression portion 33ba. Compress.

Further, since the dust collection container 30 floats up from the placement portion 21g of the drive device 20, the plurality of pins 21gb (see FIG. 4) of the placement portion 21g come out from the plurality of holes 31be of the bottom portion 31b of the dust collection container 31. .. As a result, in the pair of wiper mechanism parts 34 provided in the pair of second centrifugal separators 32ab of the cup cover unit 32, the pair of wiper members are connected via the connecting bar 34b by the urging force of the urging member (compression coil spring) 34c. 34a slides on the inner surfaces (inner peripheral surfaces) of the pair of second dust collecting chambers 31d of the dust collecting container 31 while moving downward. At this time, the fine dust D attached to the inner surface of the second dust collecting chamber 31d is wiped off by the wiper member 34a toward the bottom portion 31b.

Since the fine dust D attached to the transparent inner surface of the second dust collecting chamber 31d is wiped off by the wiper member 34a, the user can easily see the amount of dust accumulated in the first dust collecting chamber 31c. Therefore, it is possible to confirm an appropriate timing for discarding the dust in the first dust collecting chamber 31c.
Thereafter, as shown in FIGS. 6 and 12, the user opens the bottom portion 31b of the dust collecting container 31 to discard the dust collected in the first dust collecting chamber 31c and the second dust collecting chamber 31d. You can At this time, since the lumped dust in the first dust collecting chamber 31c can be discarded in a compressed state by the compression mechanism portion 33b, it is difficult for the dust to fly up when falling into the trash box and after dropping.
If necessary, the dust collector 30 can be disassembled and washed with water.

(Embodiment 2)
FIG. 13 is a perspective view showing an electric vacuum cleaner according to a second embodiment of the present invention, and FIG. 14 is a sectional view of the vacuum cleaner body according to the second embodiment as viewed from the left side. 15 is a perspective view showing a state in which the dust collecting device is removed from the drive device of the cleaner body of the second embodiment, and FIG. 16 is a perspective view showing the dust collecting device of the second embodiment. 13 to 16, the same elements as those in FIGS. 1 to 12 are designated by the same reference numerals.

In the first embodiment, the canister-type electric vacuum cleaner A of the type in which the dust collecting device 30 is vertically installed in the drive device 20 is illustrated, but in the second embodiment, the canister-type electric vacuum cleaner of the type in which the dust collecting device 130 is horizontally installed in the drive device 120. The vacuum cleaner B will be described.
As shown in FIG. 13, the electric vacuum cleaner B according to the second embodiment includes the cleaner main body 10B, the flexible hose 60, the operation handle 70, the extension pipe 80, and the suction port body 90 similar to those in the first embodiment.

As shown in FIGS. 13 to 16, the cleaner body 10B includes a drive device 120 having a pair of left and right wheels 21a and a front wheel 21b, and a cyclone-type dust collecting device 130 detachably mounted on the drive device 120. Is equipped with.

<Structure of drive device>
The drive device 120 includes a housing 21 having a mounting portion 21g having an upward opening concave shape for vertically attaching and detaching the dust collector 130, and an electric blower 22 and a cord reel 23 provided inside the housing 21. With. A winding start button 24 that operates the cord reel 23 to wind the power cord is provided on the rear portion of the housing 21.

Further, the housing 21 has a connection port 21d and a handle part 21e, which can be connected to the base end portion of the flexible hose 60 (not shown), on the front side, and an inflow port 31ac and a discharge port 32bf of the dust collector 130, which will be described later. A connectable outlet port (not shown) and an intake port 21h are provided on the bottom left rear side and bottom front part of the mounting portion 21g, and an exhaust port 21f is provided on the rear wall portion. Further, a holding plate 21j that holds the bottom portion 31b of the dust collecting device 130 horizontally placed on the placing portion 21g is provided between the placing portion 21g of the housing 21 and the winding start button 24.
Further, in the mounting portion 21g, a pair of locking recesses (not shown) with which a pair of locking claws 138 of the dust collector 130, which will be described later, are removably locked are provided on both left and right sides of the intake port 21h. ..

<Structure of dust collector>
As shown in FIGS. 14 to 19, the dust collecting device 130 is provided in the dust collecting container 131, the cup cover unit 132 detachably attached to the upper opening 31aa of the dust collecting container 131, and the cup cover unit 132. The rotation mechanism unit 133 is provided. In the following description of the dust collector 130, the side of the dust container 131 is the lower side, and the side of the cup cover unit 132 is the upper side.

[Dust container]
The dust collecting container 131 has a transparent peripheral wall portion (container body) 131a having an upper opening portion 31aa, a bottom portion (bottom lid) 131b provided at a lower opening portion of the peripheral wall portion 131a, and a bottom portion 131b connected to the peripheral wall portion 131a. And a hinge portion 131c capable of opening and closing the lower opening.
In the dust collecting container 131, the peripheral wall 131a is provided with the inflow port 31ac opening tangentially to the outer peripheral surface, and the bottom 131b is releasably locked near the lower end opening of the peripheral wall 131a. The lock portion 131d is provided.

Inside the dust collecting container 131 in which the cup cover unit 132 is mounted, a space around an inner cylinder unit 132ab of the cup cover unit 133, which will be described later, is a first dust collecting chamber 31c. The relatively large first dust is collected.

[Cup cover unit]
The cup cover unit 132 is detachably and rotatably attached to the first centrifugal separation unit 132a, which is a dust separating portion that is detachably fitted into the upper opening 31aa of the dust collecting container 131, and the upper portion of the first centrifugal separation unit 132a. The second centrifuge unit 132b to be mounted and the upper cover 132c for covering the upper part of the second centrifuge unit 132b are included.

The first centrifuge unit 132a has a hole at the center of the bottom of an inverted conical shape and communicates with a cup portion 132aa that is detachably fitted into the upper opening 31aa of the dust collecting container 31 and a hole at the bottom of the cup portion 132aa. As described above, the inner cylinder unit 132ab rotatably connected to the lower portion of the cup part 132aa and movably in the direction of the axis of rotation and the inner cylinder unit 132ab are urged downward on the side opposite to the cup part 132aa. And a biasing member 132ac. At least the upper portion 132aaa of the cup portion 132aa is transparent.

The inner cylinder unit 132ab is slightly different in configuration from the inner cylinder unit 33 (see FIG. 5) of the first embodiment, and has a configuration in which a compression mechanism portion is provided below a cylindrical frame having a mesh member 132aba on the outer peripheral surface. However, the compression mechanism portion in this case is the spiral blade 132abb. Further, a cylindrical shutter 132abc is provided on the upper part of the cylindrical frame body, and a plurality of receiving claws 132abd are provided inside the cylindrical shutter 132abc.

The second centrifugal separation unit 132b has basically the same structure as the structure in which the lid portion 32aa and the second centrifugal separator 32ab described in the first embodiment are combined, and a plurality of concentric circles are provided at equal intervals. It has a lid part 132ba having an outflow hole 132baa, and a second centrifuge body 132bb having a plurality of small centrifuge bodies 132bba vertically provided at the bottom of the lid part 132ba so as to communicate with each outflow hole 132baa.

In the second centrifuge unit 132b, a lower gear 133d of a turning mechanism 133, which will be described later, is provided at the center position of the lid 132ba.
Further, as shown in FIG. 19, a plurality of wiper members 134a forming a wiper mechanism portion are provided on the outer peripheral side of the second centrifugal separator 132bb. Each wiper member 134a is formed in a blade shape inclined with respect to an axis around which the second centrifugal separation unit 132b rotates.

Further, the upper end of each wiper member 134a is connected to a ring portion 134b provided on the outer peripheral surface of the second centrifugal separator 132bb, and each wiper member 134a hangs from the ring portion 134b in the same oblique downward direction. There is. In this case, as an example, the ring portion 134b can be formed of a hard material such as hard resin, and each wiper member 134a can be formed of an elastic material such as rubber or soft resin. Further, the ring portion 134b may be omitted, and each wiper member 134a may be provided so as to project from the outer peripheral surface of the second centrifugal separator 132bb.
The operational effect of the wiper member 134a will be described later in detail.

Further, as shown in FIG. 19, the second centrifugal separation unit 132b includes packing 135 provided on the lower outer peripheral side of the second centrifugal separator 132bb and equal intervals in the circumferential direction on the lower surface side of the second centrifugal separator 132bb. It has a plurality of substantially right triangle wiper pieces 136 provided and a plurality of claws 137 provided on the lower surface side of the second centrifugal separator 132bb so as to project downward. The wiper piece 136 is made of an elastic material such as rubber or soft resin, and the function and effect of the wiper piece 136 and the claw 137 will be described later in detail.

The upper cover 132c includes a cover main body 132ca detachably attached to the cup portion 132aa of the first centrifugal separation unit 132a to which the second centrifugal separation unit 132b is attached, and a rotation mechanism portion 133 provided on the cover main body 132ca. It has an operation handle 133a and a pair of locking claws 138 provided on the cover body 132ca so as to swing in association with the pulling operation of the operation handle 133a.

The rotation mechanism section 133 is provided inside the operation handle 133a, which is provided on the cover body 132ca so as to be rotatable and movable in the axial direction of rotation, and the operation handle 133a so as to be integrally rotatable with the operation handle 133a. A shaft portion 133b, an upper gear 133c rotatably connected to the shaft portion 133b, and a lower gear 133d provided on a lid portion 132ba of the second centrifugal separation unit 132b so as to be meshable with the upper gear 133c. , A first urging member 133e for urging the upper gear 133c toward the lower gear 133d side, and a second urging member 133f for urging the operation handle 133a toward the cover body 132ca side.

According to this rotation mechanism section 133, by rotating the operation handle 133a, the second centrifugal separation unit 132b can be rotated via the first gear 133c and the second gear 133d. Further, by pulling the operation handle 133a, the pair of locking claws 138 can be swung. The pair of locking claws 138 locks with the pair of locking recesses provided in the mounting portion 21g when the dust collector 130 is mounted on the mounting portion 21g of the drive device 120, and the operation handle 133a. By pulling up, the pair of locking claws 138 can be disengaged from the pair of locking recesses, and the dust collector 130 can be removed from the drive device 120.

As shown in FIG. 14 and FIG. 17, in the dust collecting apparatus 20 configured in this way, the space around the inner cylinder unit 132ab in the dust collecting container 131 with the bottom 131b closed closes the relatively large first dust. It is a first dust collecting chamber 31c (see FIG. 14) for storing.
When the bottom portion 131b is closed, the inner cylinder unit 132ab is pushed up by the bottom portion 131b, so that the cylindrical shutter 132abc of the inner cylinder unit 132ab is inserted through the hole of the cup portion 132aa and the second centrifugal separation unit 132b. Abuts on the packing provided on the lower surface of the. As a result, the space surrounded by the cup portion 132aa, the second centrifugal separation unit 132b, and the cylindrical shutter 132abc stores the second dust smaller than the first dust in the second dust collecting chamber 31d (see FIG. 14). Has become. Note that FIG. 17 illustrates a state in which the cylindrical shutter 132abc is lowered and the second dust collecting chamber 31d communicates with the inside of the inner cylinder unit 132ab.

The inside of the second dust collecting chamber 31d is divided into a plurality of chambers by a plurality of wiper pieces 136. Further, the lower end openings of the plurality of small centrifuge bodies 132bba of the second centrifugal separation unit 132b are opened above the respective chambers of the second dust collecting chamber 31d.
A plurality of wiper members 134a are arranged in the space between the upper portion of the cup portion 132aa and the outer peripheral surface of the second centrifugal separation unit 132b.
In addition, in the dust collecting apparatus 130 of the second embodiment, as shown in FIG. 17, a structure in which the upper portion of the cup portion 132aa is continuously connected to the peripheral wall portion 131a of the dust collecting container 131 is adopted. The upper portion also functions as a part of the peripheral wall portion 131a of the dust container 131.

<Operation of the vacuum cleaner and maintenance of the dust collector>
The flow of air in the cleaner body 10B will be described with reference to FIGS. The air flow is in the order of arrows F _{1 to} F ₁₀ in FIG.
Air containing dust is first flowed into the connecting port 21d of the driving device 10 (arrow F _1), through the first flow path 17a between the connection port 21d not shown air outlet (arrow F _2), collecting It flows into the inflow port 31ac of the dust collecting container 131 of the dust device 130 (arrow F ₃ ).

The air containing the dust that has flowed into the dust collecting container 131 swirls in the dust collecting container 131, and the relatively large first dust swirls on the inner peripheral surface side of the dust collecting container 131 due to the centrifugal force. The air containing various dusts heads toward the mesh member 132aba (arrow F ₄ ). As a result, the relatively large first dust collects in the first dust collecting chamber 31c in the dust collecting container 131.

The air containing the second dust finer than the first dust that has passed through the mesh member 132aba flows into the inner cylinder unit 132ab (arrow F ₅ ), and then flows into the flow hole 332ab of the second centrifugal separation unit 132b. To do. Then, the air containing the second dust swirls along the inner peripheral surfaces of the plurality of small centrifugal separators 132bba. As a result, the second dust is centrifugally separated and collected in the plurality of compartments defined by the second dust collection chamber 31d.

On the other hand, the air from which the second dust has been removed flows into the cover body 132ca through the plurality of outflow holes 132bba of the second centrifugal separation unit 132b, and the filter provided in the intake port 21h of the drive device 120 through the exhaust port 32bf. After passing through 50 (arrow F ₇ ), after passing through the electric blower 22, it is discarded from the exhaust port 21 f to the outside (arrows F _{8 to} F ₁₀ ).

Next, maintenance of the dust collector 130 after cleaning will be described.
Dust removal of the mesh member 132aba of the dust collecting device 130 and compression of the first dust collected in the first dust collecting chamber 31c of the dust collecting container 131 are performed by rotating the operation handle 133a of the rotating mechanism 133 in a predetermined direction. It is done at the same time. At this time, the dust removal and compression can be performed while the dust collector 131 is still attached to the drive device 120. However, the appropriate dust removal and compression is performed by removing the dust collector 130 from the drive device 120. It is desirable to perform the operation with the 130 upright.
Hereinafter, dust removal and compression performed by removing the dust collector 130 from the drive device 120 will be described.

First, when removing the dust collector 130 attached to the drive device 120, the dust collector 130 can be removed by a one-step operation of grasping and pulling the operation handle 133a of the dust collector 130 by hand as described above. ..
When the dust collector 130 removed from the drive device 120 is placed on a stable surface such as a floor in an upright state, and the operation handle 133a is rotated in a predetermined direction (clockwise in the case of the present embodiment), The second centrifugal separation unit 132b and the inner cylinder unit 132ab rotate in the same direction via the upper gear 133c and the lower gear 133d of the rotating mechanism section 133. At this time, the plurality of claws 137 of the second centrifugal separation unit 132b come into contact with the plurality of receiving claws 132abd of the inner cylinder unit 132ab to transmit the rotational force.

As the inner cylinder unit 132ab rotates, the spiral blades 132aba rotate, whereby the first dust collected at the bottom of the first dust collecting chamber 31c is compressed by the spiral blades 132aba.
When discarding the first dust in the dust container 131, pressing the lock release button of the lock portion 131d opens the bottom 131b, and the first dust in the dust container 131 drops and is discarded ( (See FIG. 17).
At this time, the inner cylinder unit 132ab is pushed down by the biasing member 132ac, and is dragged by the spiral blade 132abb to drop the first dust mass. Therefore, even if the first dust lump is accumulated in the narrow space between the dust collecting container 131 and the spiral blade 132abb, the first lump of dust is smoothly dropped.

Further, at this time, since the inner cylinder unit 132ab is lowered, the cylindrical shutter 132abc is lowered, and the plurality of chambers defined by the second dust collecting chamber 31d communicate with the inside of the inner cylinder unit 132ab. The second dust collected in each room of 31d passes through the inside of the inner cylinder unit 132ab and is discarded. At this time, the second dust may remain in the second dust collecting chamber 31d. Therefore, by rotating the operation handle 133a and rotating the plurality of wiper pieces 136 together with the second centrifugal separation unit 132b, each wiper piece 136 is rotated. The second dust can be scraped off toward the inner cylinder unit 132ab to be removed cleanly.

Further, as the second centrifugal separation unit 132b rotates, the plurality of wiper members 134a on the outer peripheral surface side of the second centrifugal separation unit 132b rotate while slidingly contacting the inner surface (inner peripheral surface) of the cup portion 132aa.
Although packing is provided between the cup portion 132aa and the second centrifugal separation unit 132b, the second dust may enter the space between the second centrifugal separation unit 132b and the upper portion 132aaa of the cup portion 132aa. It may adhere to the inner surface (inner peripheral surface) of the upper portion 132aaa of the cup portion 132aa. In this case, since the upper portion 132aaa of the cup portion 132aa is transparent, the second dust makes it unattractive, but the second dust adhering to the inner surface of the upper portion 132aaa of the cup portion 132aa is removed by the rotating wiper member 134a. It

At this time, in the present embodiment, by rotating the wiper member 134a in the clockwise direction, the wiper member 134a is inclined in the direction in which the second dust is moved to the bottom side of the cup part 132aa (the second dust collecting chamber 31d side). I am letting you. Note that the wiper member 134a may be rotated counterclockwise, and in this case, the second dust is moved to and collected at the upper end edge side (the operation handle 133a side) of the cup portion 132aa. Further, the wiper member 134a may be tilted in the direction opposite to the tilt direction shown in FIG. 19, and in this case, the second dust is removed from the cup portion 132aa by rotating the wiper member 134a in the clockwise direction. By moving the wiper member 134a in the counterclockwise direction, the second dust can be moved to the bottom side of the cup portion 132aa and collected.
After discarding the dust in the dust container 131, the second centrifugal separation unit 132b can be removed from the cup portion 132aa, and the second dust remaining in the cup portion 132aa can be removed by a brush or the like for cleaning. .. If necessary, the disassembled dust collector 130 can be washed with water.

(Embodiment 3)
Although the canister-type vacuum cleaner is illustrated in the second embodiment, the present invention may be a stick-type vacuum cleaner including the dust collector of the second embodiment.

(Embodiment 4)
In the first and second embodiments, the dust collecting device having the dust separating portion including the inner cylinder unit and the second centrifugal separation unit is illustrated, but the inner cylinder unit is omitted, and the second centrifugal separation unit is connected to the inner cylinder unit. It may be a dust separating part having a structure in which the holes are closed by a filter. In this case, a coarse filter can be used.

(Summary)
A dust collector for an electric vacuum cleaner according to the present invention is a dust container having a peripheral wall portion having at least a transparent portion, a bottom portion on a lower end side of the peripheral wall portion, and an upper opening portion on an upper end side of the peripheral wall portion, A dust separating part detachably attached to the upper opening of the dust collecting container, and a wiper mechanism part having a wiper member capable of sliding contact with the inner surface of the transparent portion of the peripheral wall part of the dust collecting container.
According to this configuration, since the dust attached to the inner surface of the transparent portion of the peripheral wall portion of the dust container is removed by the wiper member of the wiper mechanism unit, the user can visually check the amount of dust in the dust container from the outside. The dust collected in the dust collection container can be discarded at an appropriate timing. In other words, it is possible to suppress excessive accumulation of dust in the dust container, and improve maintainability. Also, when the electric vacuum cleaner is housed in a place visible to the user in the room, it looks unattractive if the inner surface of the transparent part of the peripheral wall of the dust container remains covered with dust, but the dust collector uses the wiper mechanism. Since dust adhering to the inner surface of the transparent part can be removed and cleaned, the appearance of the dust collector can be improved.

The dust collector of the electric vacuum cleaner of the present invention may be configured as follows and may be appropriately combined.
(1) The dust separator is a cylindrical first centrifugal separator that separates first dust in the air from the air, and is disposed around the first centrifugal separator to separate the first centrifugal separator from the first centrifugal separator. A second centrifuge unit including a plurality of centrifuge tubes for separating second dust smaller than the first dust in the passing air,
The dust container is provided with a first dust collection chamber capable of collecting the first dust around the first centrifugal separation unit, and the first centrifugal separation cylinders of the second centrifugal separation unit. A second dust collecting chamber provided around the first dust collecting chamber so that the second dust can be collected,
The wiper mechanism portion may be configured such that the wiper member is in sliding contact with an inner surface of the second dust collection chamber as an inner surface of the transparent portion of the peripheral wall portion of the dust collection container.
According to this configuration, in the double cyclone type dust collector in which the dust separating unit has the first centrifugal separating unit and the second centrifugal separating unit, the dust attached to the transparent inner surface (inner peripheral surface) of the second dust collecting chamber Can be removed by the wiper mechanism.

(2) The wiper mechanism section urges the wiper member, a connecting bar connected to the wiper member, and urges the connecting bar to move the wiper member to the bottom side of the dust collecting container. And a bias member,
The dust collecting container has an insertion hole at a position corresponding to the second dust collecting chamber in the bottom portion,
By inserting an external pin-shaped member into the insertion hole, the pin-shaped member can press the wiper member against the upward opening side of the dust collecting container against the biasing force of the biasing member. Good.
According to this configuration, when the double cyclone type dust collector described in (1) is mounted on the drive device of the electric vacuum cleaner having the mounting portion on which the dust collector is detachably mounted, The pin-shaped member provided on the mounting portion of the drive device can be kept in a state where the wiper member is pushed up through the insertion hole at the bottom of the dust collector. When the dust collector is removed from the drive unit, the pin-shaped member slips out of the insertion hole, and the wiper member is pushed down by the biasing member and slidably contacts the inner surface of the second dust collecting chamber, so that the dust adhered to the inner surface. Can be removed.

(3) The wiper member may be formed in a frame shape.
According to this configuration, in the double cyclone type dust collector according to (2), the wiper member does not prevent the second dust from flowing into the second dust collecting chamber from the second centrifugal separation unit. be able to.

(4) The dust separator is a cylindrical first centrifugal separator that separates the first dust in the air from the air, and the first centrifugal separator is disposed around the first centrifugal separator. A second centrifuge unit including a plurality of centrifuge tubes for separating second dust smaller than the first dust in the passing air,
The wiper mechanism portion is configured such that the wiper member is in sliding contact with an inner peripheral surface of the transparent portion of the peripheral wall portion of the dust container that faces the outer peripheral surface of the second centrifugal separator of the dust separator. May be.
According to this configuration, in the double cyclone type dust collecting device in which the dust separating unit has the first centrifugal separating unit and the second centrifugal separating unit, in the peripheral wall portion of the dust collecting container facing the outer peripheral surface of the second centrifugal separating unit. The dust adhering to the inner peripheral surface of the transparent portion can be removed by the wiper mechanism section.

(5) In the wiper mechanism section, the wiper member is provided on the outer peripheral surface side of the second centrifugal separation section,
The dust separating unit may be rotatably attached to the upper opening of the dust container.
According to this configuration, in the double cyclone type dust collector according to (1), the dust separating portion is rotated with respect to the dust collecting container, so that the wiper member rotates together with the dust separating portion. (2) The dust adhering to the inner peripheral surface can be removed by sliding contact with the inner peripheral surface of the transparent portion of the peripheral wall portion of the dust container facing the outer peripheral surface of the centrifugal separator.

(6) The wiper member may be formed in a blade shape that is inclined with respect to an axis that is a center of rotation of the dust separating unit.
According to this structure, by rotating the dust separating portion clockwise or counterclockwise with respect to the dust collecting container, the dust attached to the inner peripheral surface of the transparent portion of the peripheral wall portion of the dust collecting container is removed from the inner peripheral surface. Can be collected below or above.

Further, according to the present invention, there is provided an electric vacuum cleaner including a drive device having a built-in electric blower and the dust collecting device detachably mounted on the drive device.
According to this configuration, it is possible to obtain an electric vacuum cleaner including a dust collecting device that exhibits the same effects as the above (1) to (6).

It should be considered that the disclosed embodiments are illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description but by the scope of the claims, and is intended to include meanings equivalent to the scope of the claims and all modifications within the scope.

21gb pin (pin type member)
30, 130 Dust collector 31, 131 Dust container 31a, 131a Peripheral wall part 31aa, 131aa Upper opening part 31b, 131b Bottom part 31be Hole part (insertion hole)
31c 1st dust collection chamber 31d 2nd dust collection chamber 32a Centrifugal separation unit (dust separation part)
33 Inner cylinder unit (dust separating part)
34 wiper mechanism parts 34a, 134a wiper member 34b connecting bar 34c biasing member 132a first centrifugal separation unit (dust separating part)
32aba, 132bba Small centrifuge (centrifuge tube)
132b Second centrifuge unit (dust separator)
A, B electric vacuum cleaner

Claims (8)

A dust container having a peripheral wall portion having at least a transparent portion, a bottom portion on the lower end side of the peripheral wall portion, and an upper opening portion on the upper end side of the peripheral wall portion, and detachably attached to the upper opening portion of the dust collecting container. A dust collecting apparatus for an electric vacuum cleaner, comprising: a dust separating section to be mounted; and a wiper mechanism section having a wiper member capable of sliding contact with an inner surface of the transparent portion of the peripheral wall section of the dust collecting container. .. The dust separator is a cylindrical first centrifugal separator that separates the first dust in the air from the air, and the air that is disposed around the first centrifugal separator and passes through the first centrifugal separator. A second centrifuge unit including a plurality of centrifuge tubes for separating second dust smaller than the first dust therein,
The dust container is provided with a first dust collection chamber capable of collecting the first dust around the first centrifugal separation unit, and the first centrifugal separation cylinders of the second centrifugal separation unit. A second dust collecting chamber provided around the first dust collecting chamber so that the second dust can be collected,
The dust collecting device according to claim 1, wherein the wiper mechanism unit is configured such that the wiper member is in sliding contact with an inner surface of the second dust collecting chamber that is an inner surface of the transparent portion of the peripheral wall portion of the dust collecting container. apparatus. The wiper mechanism section includes the wiper member, a connecting bar connected to the wiper member, and an urging member for urging the connecting bar to move the wiper member to the bottom side of the dust container. Have
The dust collecting container has an insertion hole at a position corresponding to the second dust collecting chamber in the bottom portion,
By inserting an external pin-shaped member into the insertion hole, the pin-shaped member can press the wiper member against the biasing force of the biasing member toward the upper opening side of the dust collecting container. The dust collector according to claim 2. The dust collector according to claim 3, wherein the wiper member is formed in a frame shape. The dust separator is a cylindrical first centrifugal separator that separates the first dust in the air from the air, and the air that is disposed around the first centrifugal separator and passes through the first centrifugal separator. A second centrifuge unit including a plurality of centrifuge tubes for separating second dust smaller than the first dust therein,
The wiper mechanism portion is configured such that the wiper member is in sliding contact with an inner peripheral surface of the transparent portion of the peripheral wall portion of the dust container that faces the outer peripheral surface of the second centrifugal separator of the dust separator. The dust collector according to claim 1. The wiper mechanism section is provided with the wiper member on the outer peripheral surface side of the second centrifugal separation section,
The dust collecting apparatus according to claim 4, wherein the dust separating unit is rotatably mounted in the upper opening of the dust collecting container. The dust collecting device according to claim 6, wherein the wiper member is formed in a blade shape inclined with respect to an axis serving as a center of rotation of the dust separating unit. An electric vacuum cleaner comprising: a drive device including an electric blower; and the dust collector according to any one of claims 1 to 7, which is detachably mounted on the drive device.

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