JP7734065B2 - Dust collecting device and vacuum cleaner equipped with same - Google Patents

Description

The present invention relates to a dust collecting device for a vacuum cleaner and a vacuum cleaner equipped with the same.

Patent Document 1 discloses a conventional cyclone-type dust collector for a vacuum cleaner, which includes a swirl chamber that swirls dust-laden air to separate dust, a bottomless cylindrical dust collection chamber that communicates with an opening formed in the swirl chamber and collects the dust separated in the swirl chamber outside the swirl chamber, a bottomed cylindrical dust collection case that covers the dust collection chamber from below, and a ring member that is removably attached to the outer periphery of the dust collection chamber. In this dust collection device, the open end of an impermeable bag is folded outward and hooked onto the upper edge of the ring member, and the upper edge of the ring member is fitted into the lower end of a protruding portion (cylindrical wall) that forms the dust collection chamber and slid to the upper end to attach the ring member and impermeable bag to the upper outer periphery of the protruding portion. The dust collection case is then fitted into the lower end of the protruding portion and moved upward to attach it to the outside of the ring member and impermeable bag, resulting in an assembled and ready-to-use state in which the bottom of the impermeable bag is supported by the bottom of the dust collection case.

Dust captured using this dust collector accumulates at the bottom of an impermeable bag inside the dust collection chamber. To dispose of the dust collected in the dust collection device, remove the dust collection unit case, slide the ring member and impermeable bag downward to remove them, remove the ring member from the impermeable bag, and discard the dust-filled impermeable bag into a trash can. This prevents dust from flying around when the dust in the dust collection chamber is discarded into a trash can.

Japanese Patent Application Laid-Open No. 2020-448

In the dust collecting device of Patent Document 1, the installation structure is such that the entire outer peripheral surface from the lower opening of the protrusion that constitutes the dust collection chamber is covered with an impermeable bag, but the gap between the lower end of the protrusion and the impermeable bag is not sealed. As a result, dust that has accumulated at the bottom of the impermeable bag may leak out of the dust collection chamber and adhere to the inner surface of the impermeable bag. This may make it difficult to visually check the amount of dust in the dust collection chamber from the outside, even if the dust collection unit case, the protrusion, and the impermeable bag are transparent.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a dust collecting device for a vacuum cleaner, which has been made in consideration of the above circumstances, and a vacuum cleaner equipped with the same.

The present invention provides a dust collection container having a cylindrical body and a bottom lid provided at one end of the body in an openable and closable manner;
a dust capture portion provided on the other end side of the body portion of the dust collection container portion;
a ring-shaped portion for attaching a dust bag, the ring-shaped portion being detachably attached to the one end side of the outer peripheral surface of the body portion of the dust collection container portion,
The dust collecting device for an electric vacuum cleaner is characterized in that, when the bottom cover is open, the ring-shaped portion is attached to the body so that the open end side of the dust bag is sandwiched between the outer peripheral surface of the body and the inner peripheral surface of the ring-shaped portion, and when the bottom cover is closed, the inner surface of the bottom cover and one end of the body sandwich the bottom side of the dust bag to hold the dust bag.
The present invention also provides an electric vacuum cleaner comprising: a drive unit having an electric blower; and the dust collecting device detachably mounted on the drive unit.

The vacuum cleaner dust collection device of the present invention allows the amount of dust inside the body to be visually confirmed from the outside, even when the dust bag is attached.

1 is a perspective view showing a first embodiment of an electric vacuum cleaner according to the present invention; FIG. 2 is a plan view (top view) of the vacuum cleaner of FIG. 1 . FIG. 2 is a left side view of the vacuum cleaner of FIG. 1 . FIG. 2 is a left side cross-sectional view showing the internal structure of the electric vacuum cleaner of FIG. 1 . 1 is a side view showing a dust collecting device of a vacuum cleaner according to a first embodiment. FIG. 6 is a side view showing the dust collecting device of FIG. 5 with the bottom cover open. FIG. 6 is another cross-sectional view of the dust collecting device of FIG. 5 as seen from the opposite side. FIG. FIG. 8 is an enlarged cross-sectional view of the bottom cover side of the dust collecting device of FIG. 7 . FIG. 6 is an exploded view of the dust collecting device of FIG. 5 before a dust bag is attached. 8, showing a state in which the dust bag is attached. FIG. FIG. 11 is a view corresponding to FIG. 10 showing the bottom cover in an open state. FIG. 10 is a cross-sectional view showing the state in which the ring-shaped portion and the dust bag have been removed. FIG. 10 is a cross-sectional view showing a state in which the bottom cover of the dust collecting device of the second embodiment is open. FIG. 10 is a perspective view showing a state in which the bottom cover of the dust collecting device of the fourth embodiment is open. FIG. 11 is a perspective view showing a ring-shaped portion in a dust collecting device according to a fifth embodiment.

The present invention will now be described in further detail with reference to the accompanying drawings. Please note that the following description is illustrative in all respects and should not be construed as limiting the present invention.

(First embodiment)
Fig. 1 is a perspective view showing a first embodiment of a vacuum cleaner according to the present invention, and Fig. 2 is a plan view (top view) of the vacuum cleaner of Fig. 1. Fig. 3 is a left side view of the vacuum cleaner of Fig. 1, and Fig. 4 is a left sectional view showing the internal structure of the vacuum cleaner of Fig. 1. In Figs. 1 to 4, arrows indicate the front, rear, left, right, top and bottom directions as seen by a user when using the vacuum cleaner 1, and the configuration of the vacuum cleaner 1 will be described based on these front, rear, left, right, top and bottom directions.

As shown in Figures 1 to 4, the electric vacuum cleaner 1 of the first embodiment includes a drive unit 10 having an electric blower 12 (see Figure 4) therein, a dust collecting device 20 that is detachably attached to the drive unit 10, and a battery 60 that is detachably attached to the drive unit 10. The electric vacuum cleaner 1 can be used as a handheld type by connecting a suction nozzle (not shown) to a pipe portion 11f (described below) of the drive unit 10, or as a stick type by connecting a suction nozzle to the pipe portion 11f via an extension tube (not shown).

<About the drive unit>
The drive unit 10 includes a housing 11, which has an electrical component storage section 11a that houses electrical components such as an electric blower 12 and a circuit board 13, a handle section 11b provided at the rear of the electrical component storage section 11a, a switch operating section 11c provided at the top of the handle section 11b, a battery mounting section 11d provided at the bottom of the electrical component storage section 11a, and the pipe section 11f that protrudes forward from the top front end of the electrical component storage section 11a via a connecting section 11e.

The electric component storage section 11a has a lattice-shaped air inlet 11ax (see FIG. 4) at its front end, and an air outlet 11ay (see FIG. 2) on its right side surface.
The battery mounting section 11d is a recess that opens rearward and downward, and has grooves on the left and right inner surfaces that receive protrusions (not shown) on the left and right sides of the battery 60 when the battery 60 is inserted forward from the rear into the recess. In addition, a power receiving terminal 11de that is electrically connected to the power supply terminal 61 of the battery 60 is provided at the back of the battery mounting section 11d.

The switch operation unit 11c has, for example, an "Auto/Off" switch, a "High" switch, and a "Low" switch. Pressing the "Auto/Off" switch when the unit is not operating (when the electric blower 12 is stopped) switches to automatic operation mode, which automatically controls the operating output (the output of the electric blower 12 and the rotating brush) according to the load on the drive motor that rotates and drives the rotating brush of the suction port body (suction nozzle), not shown. Pressing the "High" switch while the unit is operating switches the operating output to high-output high operation mode, and pressing the "Low" switch switches the operating output to low-output low operation mode. Pressing the "Auto/Off" switch while the unit is operating stops the unit.

The pipe section 11f has a suction port 11fa at its front end and a connection/exhaust port 11fb (see Figure 2) at its rear end near the connecting section 11e, which communicates with the suction port 11fa. The section from the suction port 11fa to the connection/exhaust port 11fb forms a ventilated section through which dust-containing air flows. The lower part of the ventilated section of the pipe section 11f forms a closed space, and a pair of clip-type terminals 14 (see Figure 4) are provided within this closed space. The front end of the closed space is also provided with a partition plate 15 having a pair of holes 15a (see Figure 1) that communicate with the pair of clip-type terminals 14. When a suction port body having a motor-driven rotating brush is connected to the suction port 11fa of the pipe section 11f directly or via an extension tube, a pair of pin-type terminals of the electrical wiring system of the suction port body or extension tube are electrically connected to the pair of clip-type terminals 14 through the pair of holes 15a.

The section extending from the lower end of the pipe section 11f along the front end of the electrical component storage section 11a serves as a dust collector mounting section for removably mounting the dust collector 20 to the drive unit 10 (see Figures 1, 3, and 4). When the dust collector 20 is mounted on the drive unit 10, the connection inlet 31c (see Figure 5) of the dust collector 20, which will be described later, is airtightly connected to the connection outlet 11fb of the drive unit 10, and the air outlet 41ae (see Figure 5) of the dust collector 20, which will be described later, is airtightly connected to the air inlet 11ax of the drive unit 10.

<About the dust collection device>
Fig. 5 is a side view showing the dust collecting device of the electric vacuum cleaner of the first embodiment, and Fig. 6 is a side view showing the dust collecting device of Fig. 5 with the bottom cover open. Fig. 7 is a cross-sectional view of the dust collecting device of Fig. 5 as seen from the opposite side, Fig. 8 is an enlarged cross-sectional view of the bottom cover side of the dust collecting device of Fig. 7, and Fig. 9 is an exploded view of the dust collecting device of Fig. 5 before a dust bag is attached. In Figs. 5 to 9, arrows indicate the up and down directions of the dust collecting device 20 when it is removed from the drive unit 10 and in an upright position.
As shown in FIGS. 5 to 9, the dust collecting device 20 of the first embodiment includes a dust collecting container portion 30, a dust trap portion 40, and a ring-shaped portion 50.

The dust collection container 30 has a cylindrical body 31 and a bottom lid 32 provided at a lower end 31x (one end) of the body 31 in an openable and closable manner.
The body 31 has an upper opening 31a at its upper end 31y (the other end) into which the dust capture unit 40 is fitted, and a lower opening 31b at its lower end 31x (see FIG. 7). The body 31 also has a connection inlet 31c near the upper end 31y on its outer periphery (see FIG. 5). A connection communicating portion 31e is provided that connects the connection inlet 31c to the outer periphery of the body 31 in a spiral shape so that dust-containing air flowing into the dust collection container 30 from the connection inlet 31c can easily swirl along the inner periphery of the body 31.
The upper and middle portions of the body 31 are formed to have a constant diameter, but the lower portion is tapered to a smaller diameter. Two flanges 31f, 31g having an outer diameter equal to the constant diameter are provided close to each other on the outer peripheral surface of the tapered lower portion of the body 31, and a flange 31h having a larger diameter than the two flanges 31f, 31g is provided below the constant diameter portion of the outer peripheral surface of the body 31.

The dust collecting device 20 also has a hinge 33 that pivotally supports the bottom cover 32, which opens and closes the lower opening 31b of the body 31, and a first locking mechanism 34 that releasably locks the bottom cover 32 in a closed state. The hinge 33 and the first locking mechanism 34 will be described in more detail below.

As shown in Figures 7 and 8, the bottom cover 32 is formed in the shape of a circular shallow dish with a recess 32a on its inner surface, and a ring-shaped gasket 35 is provided on the outer periphery of the recess 32a. This gasket 35 can abut against the lower end 31x of the body 31 when the bottom cover 32 is closed, and when a dust bag B (described below) shown in Figures 9 and 10 is attached to the dust collection container 30, the gasket 35 presses the dust bag B against the lower end 31x of the body 31, sealing it.

An arm 33a, which serves as a component of the hinge 33, is connected to the outer periphery of the bottom cover 32. The arm 33a protrudes toward the recess 32a of the bottom cover 32, and a shaft 33b, which serves as a component of the hinge 33, is provided at the tip of the arm 33a. The shaft 33b extends in a direction perpendicular to the central axis P of the dust container 30.
The hinge portion 33 has a pivot portion 33c that pivotally supports the shaft portion 33b on the outer peripheral surface of the body portion 31. The pivot portion 33c is located on the left side of the body portion 31 when the connection inlet 31c of the body portion 31 is viewed from the front (see FIG. 5).

As shown in Figures 5 to 8, the first locking mechanism 34 is located 180° opposite the hinge 33 around the central axis P of the dust collection container 30. This first locking mechanism 34 includes a lever 34a having a locking claw 34ax and a shaft 34ay, a lever support 34b provided on the outer peripheral surface of the body 31 of the dust collection container 30 to pivotally support the lever 34a, and a biasing member 34c provided between the outer peripheral surface of the body 31 and the lever 34a.

The lever 34a is a plate-shaped member that is long in the vertical direction. The lower end of its inner surface is provided with a locking claw 34ax that protrudes toward the outer periphery of the bottom cover 32. A push button 34az is provided at the upper end of the outer surface opposite the locking claw 34ax. A shaft 34ay is provided on the inner surface adjacent to and below the push button 34az, extending perpendicular to the central axis P. A protrusion 34ap is also provided on the inner surface of the lever 34a between the locking claw 34ax and the shaft 34ay. When the bottom cover 32 is closed, the locking claw 34ax can be engaged with a locking recess 34d (see Figures 7 and 8) provided on the outer periphery of the bottom cover 32 as a component of the first locking mechanism 34.

The lever support portion 34b is made of an inverted U-shaped rib, and pivotally supports the shaft portion 34ay of the lever 34a.
A pair of opposing positioning protrusions 34p, 31p (see FIGS. 7 and 8 ) are provided on the back side (inner surface) of the push button 34az of the lever 34a and on the outer circumferential surface of the body 31, and a biasing member 34c is provided between the pair of opposing positioning protrusions 34p, 31p. In this embodiment, a compression coil spring is used as the biasing member 34c, but the present invention is not limited to this and a torsion coil spring, a leaf spring, or the like may also be used.

The biasing member 34c biases the push button 34az of the lever 34a outward, causing the locking claw 34ax to swing around the shaft 34ay and press against the locking recess 34d of the bottom cover 32, keeping the bottom cover 32 closing the lower opening 31b of the body 31 (see Figures 7 and 8). Furthermore, when the push button 34az of the lever 34a is pressed against the biasing force of the biasing member 34c, the locking claw 34ax swings around the shaft 34ay and disengages from the locking recess 34d. This causes the bottom cover 32 to swing downward under its own weight around the shaft 33b of the hinge 33, opening the lower opening 31b of the body 31 of the dust collection container 30 (see Figure 6).

5 to 9, the ring-shaped portion 50 is a component for attaching a dust bag that is detachably attached to the lower end side of the outer peripheral surface of the body portion 31 of the dust collection container portion 30. Note that Figures 5 to 8 show the dust collection device 20 in a state where the dust bag B is not attached.
In this embodiment, as shown in Fig. 7, the ring-shaped portion 50 is positioned below the lower end of the cover portion 43b of the partition portion 43. Because dust can accumulate up to the lower end of this cover portion 43b, the accumulation of dust can be visually confirmed from the outside even with the ring-shaped portion 50 attached. Note that a full mark may be provided on the body 31 of the dust collection container 30 to indicate when the dust collection container 30 is full. In this case, by positioning the ring-shaped portion 50 below the full mark, the accumulation of dust can be visually confirmed from the outside.
In this embodiment, the ring-shaped portion 50 is made of two parts: an outer ring-shaped member 51 and an inner ring-shaped member 52 that is detachably inserted into the outer ring-shaped member 51. Both the outer ring-shaped member 51 and the inner ring-shaped member 52 are formed into a complete ring shape without any gaps. The outer ring-shaped member 51 and the inner ring-shaped member 52 are made of resin, and the outer ring-shaped member 51 and the inner ring-shaped member 52 are different colors to make them easy to distinguish, but they may also be the same color or transparent. In addition, the outer ring-shaped member 51 and the inner ring-shaped member 52 may each be labeled with a wording or symbol indicating which is located on the outside and which is located on the inside.

As shown in Figures 8 and 9, the outer ring-shaped member 51 has a body portion 51a with an annular protrusion 51ap located approximately in the vertical middle of the outer peripheral surface, an annular locking claw 51b provided at the lower end of the body portion 51a so as to protrude inward, and an inner flange portion 51c provided at the upper end of the body portion 51a so as to protrude inward beyond the annular locking claw 51b. The annular locking claw 51b does not have to be annular, and may be provided in one or more portions.

The inner ring-shaped member 52 has a body 52a with an outer diameter smaller than the outer diameter of the body 51a of the outer ring-shaped member 51, an outer flange 52b protruding outward from the lower end of the body 52a, an annular protrusion 52c protruding inward from the lower end of the body 52a, and an annular recess 52ac provided on the outer surface of the body 52a at the boundary with the outer flange 52b. Note that the annular protrusion 52c does not have to be annular, and may be provided partially, with one or more annular protrusions 52c.

As shown in Figures 7 to 9, when the inner ring-shaped member 52 is inserted into the outer ring-shaped member 51 from below without the dust bag B (see Figure 9) attached, the upper end of the body 52a of the inner ring-shaped member 52 abuts against the inner flange 51c of the outer ring-shaped member 51, and the annular locking claw 51b of the outer ring-shaped member 51 fits into and locks into the annular recess 52ac of the inner ring-shaped member 52. This assembles the outer ring-shaped member 51 and the inner ring-shaped member 52 into a single ring-shaped unit 50. The ring-shaped member 50 attaches the dust bag B to the dust collection container unit 30, and the attachment method will be described later.

As shown in FIG. 7 , the dust capture section 40 of the dust collection device 20 is provided on the upper end side (the other end side) of the body section 31 of the dust collection container section 30 .
In this embodiment, the dust capture section 40 comprises a cup section 41 that is removably fitted into the upper opening 31a of the body section 31 of the dust collection container section 30, a filter section 42 that is removably stored within the cup section 41, and a partition section 43 that is provided at the bottom of the cup section 41.

The cup portion 41 has a cylindrical cup body 41a that is exposed to the outside when the cup portion 41 is fitted into the upper opening 31a of the dust collection container portion 30 in an engaged state, and a breathable inner cylinder body 41b that is connected to the lower end of the cup body 41a so as to be positioned within the dust collection container portion 30 when in the engaged state.
In addition, the cup portion 41 has a gasket 41c on the outer surface of the connecting portion between the cup main body 41a and the inner cylinder body 41b, and when in the fitted state, the gasket 41c is in close contact with the inner surface of the upper end 31y of the body portion 31 of the dust collection container portion 30.
The inner cylindrical body 41b has a plurality of slits 41bs on its outer circumferential surface, and the outer circumferential surface is covered with a mesh member (not shown) so as to cover the plurality of slits.

1 to 9, the dust trap 40 has a pair of second locking mechanisms 44, 45 and one third locking mechanism 46 on the outer circumferential surface of the cup body 41a. These second locking mechanisms 44, 45 and third locking mechanism 46 are configured similarly to the first locking mechanism 34, operate to lock in the same way, and can be unlocked by the same operation. The pair of second locking mechanisms 44, 45 are located opposite each other.
Each second locking mechanism 44, 45 releasably locks the state in which the cup portion 41 is fitted into the dust collection container portion 30, and is configured so that a lever with a locking claw is provided on the outer surface of the cup body 41a, and a locking recess that can engage with the locking claw is provided on the outer surface of the upper end 31y of the body portion 31 of the dust collection container portion 30.

The third locking mechanism 46 releasably locks the state in which the dust collecting device 20 is attached to the drive unit 10, and is configured by a lever with a locking claw provided on the outer surface of the cup body 41a, and a locking recess that can engage with the locking claw provided in the housing 11 of the drive unit 10.
When the dust collector 20 is attached to the drive unit 10, the first locking mechanism 34 is located on the left side, one second locking mechanism 44 is located on the upper side, the other second locking mechanism 45 is located on the lower side, and the third locking mechanism 46 and the hinge 33 are located on the right side. Note that one second locking mechanism 44 is stored in a recess provided in the dust collector attachment portion of the drive unit 10 (near the bottom of the connecting portion 11e) and is therefore not visible from the outside.

The filter section 42 is formed in a pleated shape, and a gasket 42a is provided on the outer periphery of its upper end. When the filter section 42 is stored inside the cup body 41a, the gasket 42a adheres tightly to the outer periphery of the upper end of the cup body 41a. The upper end of the cup body 41a forms the air exhaust port 41ae, and the filter section 42 can be removed from this air exhaust port 41ae and washed with water.

As shown in Figures 6 to 9, the partition 43 has a partition plate 43a with a cross-shaped cross section (a cross section cut in a direction perpendicular to the central axis P) provided at the bottom of the inner cylindrical body 41b, and a cylindrical cover portion 43b provided at the bottom of the inner cylindrical body 41b so as to cover the upper part of the partition plate 43a. Furthermore, a frame-shaped cylindrical portion 43bb is provided on the outer periphery of the inner cylindrical body 41b, and is connected to the upper end of the cover portion 43b. The inner cylindrical body 41b is fixed onto the partition 43, which has the frame-shaped cylindrical portion 43bb and the cover portion 43b.

When the bottom cover 32 is closed, the lower end of the partition plate 43a abuts or is close to the recess 32a of the bottom cover 32. The center of the cross-shaped cross section of the partition plate 43a and the central axis P substantially coincide with each other.
The cover 43b has an outer diameter substantially equal to that of the inner cylinder 41b, and has a flange 43ba protruding outward at its lower end. The cover 43b prevents dust swirling around the bottom cover 32 in the dust collection container 30 from flying up toward the inner cylinder 41b.

<Attaching the dust bag to the dust collector>
When attaching the dust bag B to the dust collecting device 20, as shown in Figure 9, the open end Ba of the dust bag B is inserted from below into the disassembled inner ring member 52 of the ring-shaped portion 50, and then the open end Ba is folded back outward and hooked onto the upper edge 52ae of the inner ring member 52. In this case, the folded dimension of the open end Ba of the dust bag B is arbitrary, but it is appropriate that it be approximately the same as the length of the body portion 52a of the inner ring member 52. The dust bag B to be used may be an impermeable plastic bag or a breathable dedicated paper pack of a size corresponding to the size of the dust collection container 30.

Next, the outer ring-shaped member 51 is fitted from above onto the inner ring-shaped member 52 with the dust bag B hooked thereon to integrate them, and the integrated ring-shaped portion 50 is fitted into the bottom of the dust collection container 30. In other words, with the bottom lid 32 open, the ring-shaped portion 50 is attached to the body 31 so that the open end Ba of the dust bag B is sandwiched between the outer peripheral surface of the body 31 of the dust collection container 30 and the inner peripheral surface of the ring-shaped portion 50 (in this embodiment, the inner peripheral surface of the inner ring-shaped member 52) (see Figure 10). In this embodiment, the dust bag B is also sandwiched between the two flanges 31f, 31g on the outer peripheral surface of the body 31 and the inner peripheral surface of the inner ring-shaped member 52.

Figure 10 corresponds to Figure 8 and shows the dust bag attached. As shown in Figure 10, when the dust bag B is attached to the dust collection container 30 using the ring-shaped portion 50, the inner flange 51c of the outer ring-shaped member 51 abuts against the flange 31h of the body 31. The annular protrusion 52c of the inner ring-shaped member 52 is secured against the flange 31f at the lower end 31x of the body 31. The annular protrusion 51ap of the outer ring-shaped member 51 is secured against the protrusion 34ap of the lever 34a of the first locking mechanism 34. This positioning and retention of the ring-shaped portion 50 relative to the dust collection container 30 prevents the ring-shaped portion 50 and the dust bag B from sliding off the dust collection container 30 even when the bottom cover 32 is opened (see Figure 11).

Thereafter, as shown in FIG. 10, the bottom cover 32 is closed, thereby allowing the dust bag B to be attached to the dust collecting device 20.
When the dust bag B is attached to the dust collecting device 20, the packing 35 of the bottom cover 32 presses the dust bag B against the lower end 31x of the body 31 of the dust collecting container 30, thereby sealing the gap between the packing 35 and the lower end 31x of the body 31 via the dust bag B. In other words, when the bottom cover 32 is closed, the bottom side of the dust bag B is sandwiched between the inner surface of the bottom cover 32 (the packing 35 in this embodiment) and the lower end 31x of the body 31 to hold the dust bag B. The bottom portion Bb of the dust bag B is pressed against the recess 32a of the bottom cover 32 by the partition plate 43a of the dust collecting device 20 and is folded into a pleated shape on the recess 32a of the bottom cover 32.

Also, as shown in Figure 10, when dust bag B is attached to the dust collecting device 20, the open end Ba of dust bag B, which is folded back outward, is sandwiched between the inner ring-shaped member 52 and the outer ring-shaped member 51. In particular, the dust bag B is tightly sandwiched between the upper end of the body portion 52a of the inner ring-shaped member 52 and the inner flange portion 51c of the outer ring-shaped member 51. Note that the open end Ba side of dust bag B may be stored in the gap between the body portion 51a of the outer ring-shaped member 51 and the body portion 52a of the inner ring-shaped member 52 so that it hangs over.

<Vacuum cleaner operation>
When the electric blower 12 of the vacuum cleaner 1, in which the dust collecting device 20 having the dust bag B is attached to the drive unit 10, is driven, as shown in FIGS. 1 to 7 , dust-containing air flows into the pipe 11f of the drive unit 10 from the suction port 11fa, passes through the connecting outlet 11fb of the pipe 11f and the connecting inlet 31c of the dust collection container 30, and then flows into the dust collection container 30. The dust-containing air swirls within the dust collection container 30, and the relatively large first dust particles are separated by centrifugal separation, while the second dust particles, which are smaller than the first dust particles, pass through the inner cylinder 41b and are captured by the filter 42. The air that has passed through the filter 42 flows into the drive unit 10 through the air outlet 41ae and the air inlet 11ax of the drive unit 10, passes through the electric blower 12, and is discharged to the outside from the exhaust port 11ay of the housing 11. Furthermore, when dust swirls within the dust collection container 30, the space between the gasket 35 of the bottom cover 32 and the lower end 31x of the body 31 is sealed via the dust bag B, so the dust does not get around to the outer surface of the body 31 and then run along the outer surface of the body 31 and leak out from the upper end of the ring-shaped portion 50 to the outside.

<Dust disposal>
11 is a view corresponding to FIG. 10, showing the state where the bottom cover is open, and FIG. 12 is a cross-sectional view showing the state where the ring-shaped portion and the dust bag are removed.
During cleaning, dust accumulates in the dust collecting device 20 of the vacuum cleaner 1. To dispose of the dust, remove the dust collecting device 20 from the drive unit 10 and, as shown in FIG. 11 , press the push button 34az of the first locking mechanism 34 to unlock and open the bottom cover 32. Because a dust bag B is placed on the bottom cover 32, when the bottom cover 32 is opened, the weight of the dust D causes the dust bag B to hang from the lower opening 31b of the dust collection container 30 and become exposed to the outside. At this time, as described above, the ring-shaped portion 50 does not accidentally slip off the dust collection container 30. Depending on the dust situation in the dust collection container 30, dust may become clogged and the state shown in FIG. 11 may not be achieved even when the bottom cover 32 is open. However, applying vibration to the dust collection container 30 will achieve the state shown in FIG. 11 . Furthermore, by vibrating the dust collection container 30, dust adhering to the mesh member (not shown) of the inner cylinder 41b and the inner circumferential surface of the body 31 can be dropped and collected.

11 and 12, the ring-shaped portion 50 is then slid downward relative to the dust collection container portion 30 to remove it. At this time, the annular protrusion 52c of the inner ring-shaped member 52 passes over the flange portion 31f at the lower end 31x of the dust collection container portion 30, via the dust bag B. In this way, the dust bag B containing dust D attached to the ring-shaped portion 50 is removed from the dust collection container portion 30. Then, with the bottom portion Bb of the dust bag B in contact with a floor or table, the outer ring-shaped member 51 is lifted relative to the inner ring-shaped member 52, thereby separating the inner ring-shaped member 52 and the outer ring-shaped member 51, as shown in FIG. 9. At this time, the annular locking claw 51b slides upward against the outer peripheral surface of the body portion 52a of the inner ring-shaped member 52, causing the open end Ba of the dust bag B to be lifted upward by the annular locking claw 51b. As a result, when the inner ring-shaped member 52 and the outer ring-shaped member 51 are separated, the open end Ba of the dust bag B tends to be positioned above the upper edge 52ae of the inner ring-shaped member 52. This makes it easier to grasp the open end Ba of the dust bag B. Furthermore, because the bottom portion Bb of the dust bag B is in contact with the floor or a stand, the bag will not fall. The dust bag B can then be pulled out below the inner ring-shaped member 52 and discarded in a trash can after containing the dust. It is preferable to tie the open end Ba of the dust bag B before discarding. This reduces or prevents dust from flying up when the dust is dropped directly from the dust collection container 30 into a trash can.

(Modification of the first embodiment)
In the first embodiment, the outer ring-shaped member 51 and the inner ring-shaped member 52 constituting the ring-shaped portion 50 are illustrated as being formed in a seamless ring shape (see FIG. 9 ). However, the ring-shaped portion 50 may also be formed in a generally ring-shaped or C-shaped configuration with a slit. In this case, at least one or both of the outer ring-shaped member 51 and the inner ring-shaped member 52 may be generally ring-shaped or C-shaped with a slit. Note that, if both the outer ring-shaped member 51 and the inner ring-shaped member 52 are generally ring-shaped or C-shaped with a slit, it is preferable that the slit in the outer ring-shaped member 51 and the slit in the inner ring-shaped member 52 do not face each other (do not overlap). This reduces the possibility of dust leaking from the overlapping portion of the slits.

Second Embodiment
Fig. 13 is a cross-sectional view showing a state in which the bottom cover of the dust collecting device of the second embodiment is open. In Fig. 13, the same elements as those in Fig. 12 are denoted by the same reference numerals.
The dust collecting device 120 of the second embodiment is configured generally similarly to the first embodiment, except that it includes a dust capturing unit 140 that is different in configuration from the dust capturing unit 40 of the dust collecting device 20 of the first embodiment (see FIG. 12). Below, differences between the second embodiment and the first embodiment will be mainly described.

In the dust collecting device 120 of the second embodiment, the dust capture unit 140 includes a cup body 141a that is removably fitted into the upper opening 31a of the body 31 of the dust collecting container 130, a filter unit 42 that is removably housed within the cup body 141a, an inner cylinder 141b that is provided separately at the bottom of the cup body 141a, a movable connector 170 that connects the inner cylinder 141b to the bottom of the cup body 141a so that it can move up and down, and a partition 43 that is connected to the bottom of the inner cylinder 141b. In this configuration, the movable connector 170 allows the inner cylinder 141b and the partition 43 to move up and down relative to the cup body 141a.

The movable connecting portion 170 has a plurality of guide portions 171 and at least one biasing portion 172 provided between the cup body 141a and the inner cylinder body 141b.
The guide portion 171 has a guide protrusion 171a that protrudes downward from the lower end of the cup body 141a on a concentric circle centered on the central axis P of the dust collection container 130, and a slide cylinder portion 171b that fits into the guide protrusion 171a so as to be slidable in the up and down direction. Note that to prevent the slide cylinder portion 171b from coming off the guide protrusion 171a, for example, a stopper piece 31t is provided on the inner circumferential surface of the trunk 31 of the dust collection container 130. When the inner cylinder 141b slides downward relative to the cup body 141a, this stopper piece 31t comes into contact with the flange portion 43ba of the cover portion 43b, stopping the inner cylinder 141b at a lower limit position.

In this embodiment, a frame-shaped tube portion 43bb is provided on the outer periphery of the inner tube body 141b, and is connected to the upper end of the cover portion 43b. The sliding tube portions 171b of multiple guide portions 171 and the mounting protrusion 172a of at least one biasing portion 172 are provided on the outer periphery of the upper end of the frame-shaped tube portion 43bb.

The biasing portion 172 includes an attachment projection 172a having a positioning projection 172aa provided on the outer periphery of the inner cylindrical body 141b, a positioning projection 172b provided at the lower end of the cup body 141a in a position facing the attachment projection 172a, and a biasing member 172c provided between the upper and lower positioning projections 172b and 172aa. While this embodiment illustrates the use of a compression coil spring as the biasing member 172c, it is not limited to a compression coil spring and may alternatively be a leaf spring, for example. The biasing portion 172 may also be provided at multiple locations on the outer periphery of the inner cylindrical body 141b.

In the dust collection device 120 having the movable connecting portion 170, when the bottom cover 32 is closed (see FIG. 7), the bottom cover 32 pushes up the partition portion 43 and inner cylinder 141b against the biasing force of the biasing member 172c. At this time, the biasing member 172c biases the inner cylinder 141b in a direction that pushes it down (toward the bottom cover 32). At this time, the upper end of the inner cylinder 141b abuts against the opening at the lower end of the cup body 141a. As in the first embodiment, in the second embodiment, a ring-shaped portion 50 consisting of an outer ring-shaped member 51 and an inner ring-shaped member 52 is attached to the outer periphery of the lower end of the dust collection container 130, thereby placing the dust bag B on the bottom cover 32 (see FIG. 10).

When disposing of dust using this dust collection device 120, as shown in FIG. 13, the first locking mechanism 34 is operated to open the bottom cover 32. The inner cylinder 141b, pressed downward by the biasing member 172c, presses the bottom portion Bb of the dust bag B downward and outward via the partition 43. Therefore, even dust D stuck in the lower opening 31b of the dust collection container 130 is easily dragged downward by the partition 43, and the dust D is easily pushed out and dropped into the bottom portion Bb of the dust bag B. Furthermore, because the bottom portion Bb of the dust bag B protrudes below the ring-shaped portion 50 before the ring-shaped portion 50 is removed, the bottom of the dust bag B becomes deeper. This makes it less likely that dust D will fly up and leak out of the opening of the ring-shaped portion 50 due to the force of removing the ring-shaped portion 50 from the dust collection container 130.

(Third embodiment)
The dust collecting device of the third embodiment (not shown) has a configuration in which the inner cylinder 41b and the partition portion 43 in the dust collecting device 20 of the first embodiment shown in Figures 5 to 12 are separate but connected by a movable connecting portion described below.
In this case, the movable connecting portion has, for example, an upwardly opening guide tube portion provided on the central axis P of the partition portion 43, and a compression coil spring as a biasing member whose upper end is fixed to the lower end of the inner tube body 141b and whose lower end is inserted and fixed within the guide tube portion.

In the third embodiment, the partition portion 43 having the frame-shaped cylindrical portion 43bb and the cover portion 43b is separated from the inner cylindrical body 41b and is movable in the direction of the central axis P. At this time, the frame-shaped cylindrical portion 43bb is slid and guided in the direction of the central axis P relative to the inner cylindrical body 41b.
When disposing of dust in the dust collecting device of the third embodiment, when the bottom cover 32 is opened, the bottom portion Bb of the dust bag B is pressed downward and outward by the partition 43, which serves as a pressing member and is pressed downward by the biasing member (see FIG. 13 ). That is, while the second embodiment is configured to bias the inner tube 141b downward by the biasing member, the third embodiment is configured to bias the partition 43, which serves as a pressing member, downward by the biasing member.

(Fourth embodiment)
Fig. 14 is a perspective view showing a state in which the bottom cover of the dust collecting device of the fourth embodiment is open. In Fig. 14, elements that are the same as those in Figs. 5 and 6 are given the same reference numerals.
As shown in FIG. 14, the dust collecting device 220 of the fourth embodiment is generally similar to the first embodiment, except that an adhesive portion 80 is provided on the recess 32a, which is the inner surface of the bottom cover portion 32a, in the dust collecting device 20 of the first embodiment.

In this embodiment, for example, a gel-like adhesive sheet whose adhesive strength can be restored by washing with water can be used as the adhesive portion 80. Furthermore, there are no particular limitations on the position of the adhesive portion 80 as long as it comes into contact with the bottom portion Bb of the dust bag B attached to the outer periphery of the lower end of the dust collection container 30 by the ring-shaped portion 50.
According to the dust collecting device 220 of the third embodiment, by opening the bottom cover 32, the bottom portion Bb of the dust bag B that is in contact with the adhesive portion 80 is pulled out, allowing dust to fall into the bottom portion Bb of the pulled-out dust bag B. In this embodiment, the adhesive portion 80 is disposed on the opposite side of the recess 32a of the bottom cover 32 from the hinge portion 33. This arrangement allows the distance over which the bottom portion Bb of the dust bag B can be pulled out to be increased.
The adhesive portion 80 may be a double-sided tape having adhesive layers on both sides.

Fifth Embodiment
FIG. 15 is a perspective view showing a ring-shaped portion in a dust collecting device according to a fifth embodiment.
The dust collecting device of the fifth embodiment is similar to the first to fourth embodiments except for the configuration of the ring-shaped portion 350. That is, while the ring-shaped portion 50 in the first to fourth embodiments is configured as two parts, that is, an outer ring-shaped member 51 and an inner ring-shaped member 52, the ring-shaped portion 350 of the fifth embodiment is configured as a single part.

This ring-shaped portion 350 has a cylindrical ring main body 350a and protrusions 350b provided on the outer peripheral surface of the ring main body 350a. In this embodiment, multiple thin, hook-shaped protrusions 350b are provided circumferentially, protruding outward from the upper edge 350aa of the ring main body 350a and hanging downward. Note that a protrusion similar to the annular protrusion 52c (see Figure 10) provided on the inner ring-shaped member 52 of the ring-shaped portion 50 of the first embodiment may be provided on the inner peripheral surface of the lower edge 350ab of the ring main body 350a.

According to the fifth embodiment, the dust bag B can be attached to the ring-shaped portion 350 by passing the open end Ba of the dust bag B through the ring-shaped portion 350 from below and hooking the folded open end Ba onto the protrusions 350b of the ring-shaped portion 350. Then, by attaching the ring-shaped portion 350 with the dust bag B attached to it to the outer periphery of the lower end of the dust collection container portion 30 in the same manner as in the first embodiment, the open end Ba of the dust bag B can be sandwiched between the outer periphery of the body portion 31 of the dust collection container portion 30 and the inner periphery of the ring-shaped portion 350 (see FIG. 10 ). Note that a simple cylindrical ring-shaped portion without multiple protrusions 350b may be used instead of the ring-shaped portion 350.

(summary)
As mentioned above,
(i) The dust collecting device of the electric vacuum cleaner according to the present invention comprises a dust collecting container part having a cylindrical body part and a bottom cover part provided at one end side of the body part so as to be able to open and close;
a dust capture portion provided on the other end side of the body portion of the dust collection container portion;
a ring-shaped portion for attaching a dust bag, the ring-shaped portion being detachably attached to the one end side of the outer peripheral surface of the body portion of the dust collection container portion,
The ring-shaped portion is attached to the body portion so that the open end of the dust bag is sandwiched between the outer peripheral surface of the body portion and the inner peripheral surface of the ring-shaped portion when the bottom lid portion is open, and the dust bag is held by sandwiching the bottom side of the dust bag between the inner surface of the bottom lid portion and one end of the body portion when the bottom lid portion is closed.

This configuration allows the dust collected in the dust collection container to be disposed of in a trash can, along with the dust bag, without the dust being blown up. Furthermore, the dust bag is attached to only one end (bottom lid side) of the dust collection container's body by the ring-shaped part, and most of the body is not covered by the dust bag, so the amount of dust inside the transparent body can be visually confirmed from the outside. Furthermore, when the bottom lid is closed, the bottom side of the dust bag is sandwiched between the inner surface of the bottom lid and one end of the body to hold the dust bag in place, preventing dust from leaking around and adhering to the outer periphery of the body, and preventing the outer periphery of the body from becoming dirty with dust.
Furthermore, in the case of the dust collecting device of Patent Document 1, the entire dust collecting chamber is covered by the dust collecting case part together with the outer ring member and the impermeable bag, which increases the number of parts and the weight of the dust collecting device, but in the configuration of the present invention, there is no case part that covers the entire dust collecting container part together with the outer ring-shaped part and the dust bag, so the number of parts can be reduced and the device can be made lighter than the dust collecting device of Patent Document 1.

In the dust collection device of Patent Document 1, the open end of the impermeable bag is folded outward and hooked onto the upper edge of the ring member. The upper edge of the ring member is then fitted onto the lower end of the protruding portion (cylindrical wall) that forms the dust collection chamber and slid to the upper end to attach the ring member and impermeable bag to the upper outer surface of the protruding portion. The dust collection case is then fitted into the lower end of the protruding portion and moved upward to attach it to the outside of the ring member and impermeable bag. However, during this process, the open end of the impermeable bag becomes bulky (spreads out) and gets in the way, making it difficult to lift the dust collection case to a fixed position near the upper edge of the ring member while keeping the open end of the impermeable bag inside the dust collection case. In contrast, the configuration of the present invention does not have a case that covers the entire dust collection container together with the outer ring member and dust bag. Furthermore, the dust bag is attached only to one end of the dust collection container's body (the bottom lid side) via the ring member, resulting in superior dust bag attachment compared to the dust collection device of Patent Document 1.

Furthermore, preferred embodiments of the present invention will be described.
(ii) the ring-shaped portion has an outer ring-shaped member and an inner ring-shaped member that is detachably inserted into the outer ring-shaped member;
The open end side of the dust bag may be sandwiched between the outer peripheral surface of the body of the dust collection container part and the inner peripheral surface of the inner ring-shaped member of the ring-shaped part, and the open end folded back to the outside of the dust bag may be sandwiched between the inner ring-shaped member and the outer ring-shaped member.
According to this configuration, the ring-shaped portion is composed of two parts, an outer ring-shaped member and an inner ring-shaped member, and the dust bag can be attached to the ring-shaped portion by sandwiching the open end of the dust bag folded outward between the inner ring-shaped member and the outer ring-shaped member. Therefore, when attaching the dust bag together with the ring portion to the body of the dust collection container, the open end of the dust bag does not become bulky (spread out) in a pleated shape and get in the way, and attachment can be made easily and smoothly. Furthermore, since the pleated open end of the dust bag is contained between the outer ring-shaped member and the inner ring-shaped member and is not directly visible from the outside, there is also the advantage of improving the appearance of the dust collection device.

(iii) the ring-shaped portion has a protrusion on its outer circumferential surface;
The open end side of the dust bag may be sandwiched between the outer peripheral surface of the body of the dust collection container and the inner peripheral surface of the ring-shaped portion, and the open end folded back to the outside of the dust bag may be hooked onto the protrusion of the ring-shaped portion.
With this configuration, when the dust bag is attached to the ring-shaped part, the folded open end of the dust bag can be hooked onto the protrusion on the ring-shaped part, which improves the appearance of the pleated open end of the dust bag when viewed from the outside and also makes it possible to make the ring-shaped part a single component.

(iv) the dust capture unit has a breathable inner cylinder disposed inside the dust collection container unit, and a biasing member that biases the inner cylinder toward the bottom cover of the dust collection container unit,
When the bottom cover is opened, the inner cylinder may press the bottom side of the dust bag outward.
With this configuration, when disposing of dust accumulated in the dust collecting device, the bottom cover is opened and the inner cylinder presses the bottom of the dust bag outward, pushing the bottom of the dust bag containing the accumulated dust out of the dust collection container. This expands the volume of the dust bag when disposed of, making it less likely that the dust inside the dust bag will spill out when the ring-shaped part is removed from the dust collection container.

(v) the dust capture section has a breathable inner cylinder disposed inside the dust collection container section, a pressing member movably provided between the inner cylinder and the bottom cover of the dust collection container section, and a biasing member that biases the pressing member toward the bottom cover,
When the bottom cover is opened, the pressing member may press the bottom side of the dust bag outward.
With this configuration, when disposing of dust accumulated in the dust collecting device, the bottom cover is opened and the pressing member presses the bottom of the dust bag outward, pushing the bottom of the dust bag containing the accumulated dust out of the dust collection container. This expands the volume of the dust bag when disposed of, making it less likely that the dust inside the dust bag will spill out when the ring-shaped part is removed from the dust collection container.

(vi) the dust collection container further has an adhesive portion provided on the inner surface of the bottom cover portion so as to contact the bottom side of the dust bag;
The bottom side of the dust bag in contact with the adhesive portion may be pulled out to the outside by opening the bottom lid portion.
With this configuration, when disposing of dust accumulated in the dust collecting device, the bottom cover can be opened to pull out the bottom side of the dust bag attached to the adhesive part from inside the dust collection container to the outside. This expands the volume of the dust bag when disposed of, making it less likely that the dust inside the dust bag will spill out when the ring-shaped part is removed from the dust collection container.

(vii) the bottom lid is provided at one end of the body portion via a hinge portion so as to be openable and closable;
The adhesive portion may be disposed on the inner surface of the bottom cover portion on an opposite side to the hinge portion.
According to this configuration, the moving distance (swinging distance) of the adhesive portion when the swingable bottom cover is opened by the hinge portion is increased, so that the capacity of the dust bag can be greatly increased.

Preferred aspects of the present invention also include combinations of any of the above-mentioned aspects.
In addition to the above-described embodiment, various modifications of the present invention are possible. These modifications should not be interpreted as not falling within the scope of the present invention. The present invention should include all modifications within the scope of the claims and the equivalent meanings thereof.

1: Electric vacuum cleaner, 10: Drive unit, 11: Housing, 11a: Electrical component storage section, 11ax: Air inlet, 11ay: Exhaust port, 11b: Handle section, 11c: Switch operation section, 11d: Battery mounting section, 11de: Power receiving terminal, 11e: Connection section, 11f: Pipe section, 11fa: Suction port, 11fb: Connection and exhaust port, 12: Electric blower, 13: Circuit board, 14: Clip-type terminal, 15: Partition plate, 15a: Hole section, 20, 120, 220: Dust collection device, 30, 130: Dust collection container section, 31: Body section, 31a: Upper opening, 31b: Lower opening, 31c: Connection and inlet port, 31x: Lower end (one end), 31y: Upper end (other end), 31e: connecting and communicating portion, 31f, 31g, 31h: flange portion, 31p, 34p: positioning protrusion, 31t: stopper piece, 32: bottom cover portion, 32a: recess, 33: hinge portion, 33a: arm portion, 33b: shaft portion, 33c: pivot portion, 34: first locking mechanism portion, 34a: lever, 34ap: protrusion portion, 34ax: locking claw, 34ay: shaft portion, 34az: push button, 34b: lever support portion, 34c: biasing member, 34d: engaging recess, 35: packing, 40, 140: dust capturing portion, 41: cup portion, 41a, 141a: cup body, 41ae: air exhaust port, 41b, 141b: inner cylinder body, 41bs: slit, 41c: packing, 42: filter portion, 42a: packing, 43: partition portion, 43a: partition plate, 43b: cover portion, 43ba: flange portion, 43bb: frame-shaped tubular portion, 44, 45: second locking mechanism portion, 46: third locking mechanism portion, 50, 350: ring-shaped portion, 51: outer ring-shaped member, 51a: body portion, 51ap: annular protrusion, 51b: annular locking claw, 51c: inner flange portion, 52: inner ring-shaped member, 52a: body portion, 52ac: annular recess portion, 52ae: upper edge, 52b: outer flange portion, 52c: annular protrusion, 60: battery, 61: power supply terminal, 80: adhesive portion, 170: movable connecting portion, 171: Guide portion, 171a: Guide tube portion, 171b: Slide tube portion, 172: Pressurizing portion, 172a: Mounting protrusion, 172aa, 172b: Positioning protrusion, 172c: Pressurizing member, 350a: Ring body, 350aa: Upper edge, 350ab: Lower edge, 350b: Protrusion, B: Dust bag, Ba: Opening edge, Bb: Bottom portion, D: Dust, P: Center axis

Claims (7)

a dust collection container having a cylindrical body and a bottom lid provided at one end of the body in an openable and closable manner;
a dust capture portion provided on the other end side of the body portion of the dust collection container portion;
a ring-shaped portion for attaching a dust bag, the ring-shaped portion being detachably attached to the one end side of the outer peripheral surface of the body portion of the dust collection container portion,
When the bottom lid is open, the ring-shaped portion is attached to the body portion so that the open end of the dust bag is sandwiched between the outer peripheral surface of the body portion and the inner peripheral surface of the ring-shaped portion, and when the bottom lid is closed, the inner surface of the bottom lid portion and one end of the body portion sandwich the bottom side of the dust bag to hold the dust bag ,
the ring-shaped portion has an outer ring-shaped member and an inner ring-shaped member detachably inserted into the outer ring-shaped member,
a dust collecting device characterized in that the open end side of the dust bag is sandwiched between the outer peripheral surface of the body of the dust collecting container section and the inner peripheral surface of the inner ring-shaped member of the ring-shaped section, and the open end of the dust bag folded back to the outside is sandwiched between the inner ring-shaped member and the outer ring-shaped member. a dust collection container having a cylindrical body and a bottom lid provided at one end of the body in an openable and closable manner;
a dust capture portion provided on the other end side of the body portion of the dust collection container portion;
a ring-shaped portion for attaching a dust bag, the ring-shaped portion being detachably attached to the one end side of the outer peripheral surface of the body portion of the dust collection container portion,
When the bottom lid is open, the ring-shaped portion is attached to the body portion so that the open end of the dust bag is sandwiched between the outer peripheral surface of the body portion and the inner peripheral surface of the ring-shaped portion, and when the bottom lid is closed, the inner surface of the bottom lid portion and one end of the body portion sandwich the bottom side of the dust bag to hold the dust bag,
the ring-shaped portion has a protrusion on its outer circumferential surface,
a dust collecting device characterized in that the open end side of the dust bag is sandwiched between the outer peripheral surface of the body of the dust collecting container and the inner peripheral surface of the ring-shaped portion, and the open end of the dust bag folded back to the outside is hooked onto the protrusion of the ring-shaped portion. a dust collection container having a cylindrical body and a bottom lid provided at one end of the body in an openable and closable manner;
a dust capture portion provided on the other end side of the body portion of the dust collection container portion;
a ring-shaped portion for attaching a dust bag, the ring-shaped portion being detachably attached to the one end side of the outer peripheral surface of the body portion of the dust collection container portion,
When the bottom lid is open, the ring-shaped portion is attached to the body portion so that the open end of the dust bag is sandwiched between the outer peripheral surface of the body portion and the inner peripheral surface of the ring-shaped portion, and when the bottom lid is closed, the inner surface of the bottom lid portion and one end of the body portion sandwich the bottom side of the dust bag to hold the dust bag,
the dust capture portion includes a breathable inner cylinder disposed inside the dust collection container portion, and a biasing member that biases the inner cylinder toward the bottom cover of the dust collection container portion,
A dust collecting device characterized in that, when the bottom cover is opened, the inner cylindrical body presses the bottom side of the dust bag outward. a dust collection container having a cylindrical body and a bottom lid provided at one end of the body in an openable and closable manner;
a dust capture portion provided on the other end side of the body portion of the dust collection container portion;
a ring-shaped portion for attaching a dust bag, the ring-shaped portion being detachably attached to the one end side of the outer peripheral surface of the body portion of the dust collection container portion,
When the bottom lid is open, the ring-shaped portion is attached to the body portion so that the open end of the dust bag is sandwiched between the outer peripheral surface of the body portion and the inner peripheral surface of the ring-shaped portion, and when the bottom lid is closed, the inner surface of the bottom lid portion and one end of the body portion sandwich the bottom side of the dust bag to hold the dust bag,
the dust capture section includes a breathable inner cylinder disposed inside the dust collection container section, a pressing member movably provided between the inner cylinder and the bottom cover of the dust collection container section, and a biasing member that biases the pressing member toward the bottom cover,
A dust collecting device characterized in that, when the bottom cover is opened, the pressing member presses the bottom side of the dust bag outward. a dust collection container having a cylindrical body and a bottom lid provided at one end of the body in an openable and closable manner;
a dust capture portion provided on the other end side of the body portion of the dust collection container portion;
a ring-shaped portion for attaching a dust bag, the ring-shaped portion being detachably attached to the one end side of the outer peripheral surface of the body portion of the dust collection container portion,
When the bottom lid is open, the ring-shaped portion is attached to the body portion so that the open end of the dust bag is sandwiched between the outer peripheral surface of the body portion and the inner peripheral surface of the ring-shaped portion, and when the bottom lid is closed, the inner surface of the bottom lid portion and one end of the body portion sandwich the bottom side of the dust bag to hold the dust bag,
The dust collection container further includes an adhesive portion provided on an inner surface of the bottom cover portion so as to come into contact with the bottom side of the dust bag,
A dust collecting device characterized in that the bottom side of the dust bag in contact with the adhesive portion is pulled out to the outside by opening the bottom cover portion. the bottom cover is provided at one end of the body portion via a hinge portion so as to be openable and closable;
The dust collecting device according to claim 5 , wherein the adhesive portion is disposed on the inner surface of the bottom cover portion on an opposite side to the hinge portion. An electric vacuum cleaner comprising: a drive unit having an electric blower; and the dust collecting device according to any one of claims 1 to 6 , which is detachably attached to the drive unit.