WO2012029257A1

WO2012029257A1 - Dust collection device and electric cleaner

Info

Publication number: WO2012029257A1
Application number: PCT/JP2011/004714
Authority: WO
Inventors: 吉田　稔之; 仲本　博司; 小川　貴昭; 田中　剛
Original assignee: パナソニック株式会社
Priority date: 2010-08-30
Filing date: 2011-08-25
Publication date: 2012-03-08
Also published as: EP2612584A4; TW201215359A; CN103096774A; EP2612584A1

Abstract

A dust collection device (7) provided with: a substantially cylindrical dust box body; a substantially cylindrical primary filter (21) disposed within the dust box body so as to be concentric therewith; a cyclone space (31) formed between the inner peripheral surface of the dust box body and the outer peripheral surface of the primary filter (21); a substantially cylindrical dust accumulation space (52) disposed below the cyclone space (31); an umbrella-shaped extension section (22) provided below the primary filter (21) and extending toward the dust accumulation space (52); and a substantially cylindrical wall section (60) provided inside the extension section (22).

Description

Dust collector and vacuum cleaner

The present invention relates to a dust collector, in particular, a dust collector used in a cyclone type vacuum cleaner, and a vacuum cleaner using the dust collector.

A dust collector mounted on a conventional cyclonic vacuum cleaner swirls air sucked together with dust from a suction tool in a cyclone chamber above the cylindrical dust collector. In the cyclone chamber, dust mixed in the air is separated using centrifugal force, and the separated dust is collected in a dust collection chamber below the cylindrical dust collection unit. The air from which the dust has been separated is sucked into the suction side by the electric blower.

In such a conventional cyclonic vacuum cleaner, the dust collected in the dust collection chamber returns to the suction side. For this reason, it was set as the structure which suppresses the return of dust by changing the diameter of a cyclone chamber and the diameter of a dust collection chamber, and providing a level | step difference (for example, refer patent document 1).

However, such a configuration is still insufficient to suppress the return from the dust collection chamber, and it is necessary to further enhance the dust collection effect. In addition, there is a problem that pet hair such as dogs and cats and human hair contained in the dust returns to the space area of the cyclone and winds around the primary filter.

JP 2000-135184 A

In the cyclone type dust collector, the present invention reduces the amount of collected dust from returning to the suction side as much as possible, and pet hair such as dogs and cats and human hair contained in the dust is wound around the primary filter. It is an object of the present invention to provide a dust collector and a vacuum cleaner that can prevent sticking and can significantly increase the dust collection effect.

The present invention is a dust collector, and includes a substantially cylindrical dust box body, and a substantially cylindrical primary filter disposed concentrically with the dust box body in the dust box body. Further, a cyclone space formed between the inner peripheral surface of the dust box main body and the outer peripheral surface of the primary filter, and a substantially cylindrical dust accumulation space provided below the cyclone space are provided. In addition, an umbrella-shaped extension portion provided toward the dust accumulation space provided at the lower portion of the primary filter and a substantially cylindrical wall portion provided inside the extension portion are provided. Yes.

Moreover, the vacuum cleaner of the present invention is provided with the above-described dust collector.

FIG. 1 is a perspective view showing an overall configuration of a vacuum cleaner provided with a dust collector in a first embodiment of the present invention. FIG. 2 is a perspective view showing the external appearance of the dust collecting apparatus according to the first embodiment of the present invention as seen obliquely from the front. FIG. 3 is a perspective view showing the external appearance of the dust collecting apparatus according to the first embodiment of the present invention, as viewed obliquely from the rear. FIG. 4 is a perspective view showing the internal structure of the dust collector in the first embodiment of the present invention. FIG. 5 is a cross-sectional view of the dust collector in the first embodiment of the present invention. FIG. 6 is a diagram showing a cross-sectional structure of the dust collector in the first embodiment of the present invention. FIG. 7 is a diagram showing a cross-sectional structure of the lower part of the dust collector according to the first embodiment of the present invention as seen from the lower surface. FIG. 8 is a perspective view for explaining a configuration of a notch portion provided in a wall portion of the dust collector in the first embodiment of the present invention. FIG. 9 is a rear view showing another example of the extending portion of the dust collecting apparatus according to the first embodiment of the present invention. FIG. 10 is a perspective view showing the overall configuration of the electric vacuum cleaner provided with the dust collector in the second embodiment of the present invention. FIG. 11 is a perspective view showing the external appearance of the dust collecting apparatus according to the second embodiment of the present invention as seen obliquely from the front. FIG. 12 is a perspective view showing the external appearance of the dust collecting apparatus according to the second embodiment of the present invention, as viewed obliquely from the rear. FIG. 13 is a perspective view showing the internal structure of the dust collector in the second embodiment of the present invention. FIG. 14 is a cross-sectional view of the dust collector in the second embodiment of the present invention. FIG. 15 is a diagram showing a cross-sectional structure of the dust collector in the second embodiment of the present invention. FIG. 16: is a figure which shows the cross-sectional structure which looked at the lower part of the dust collector in the 2nd Embodiment of this invention from the lower surface.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(First embodiment)
A dust collector 7 and a vacuum cleaner 50 using the dust collector 7 in the first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an overall configuration of a vacuum cleaner 50 provided with a dust collector 7 in the first embodiment of the present invention, and FIG. 2 is an oblique view showing the appearance of the dust collector 7 It is the perspective view seen from the front. FIG. 3 is a perspective view showing the external appearance of the dust collector 7 as seen from an oblique rear side, and FIG. 4 is a perspective view showing the internal structure of the dust collector 7. 5 is a cross-sectional view of the dust collector 7, FIG. 6 is a diagram showing a cross-sectional structure of the dust collector 7, and FIG. It is a figure showing a section structure.

As shown in FIG. 1, the dust collector 7 in the present embodiment is housed in a vacuum cleaner 50. The vacuum cleaner 50 includes a vacuum cleaner body 1, a hose 2 having one end connected to a suction port 1 a provided in front of the vacuum cleaner body 1, a connection pipe 3 provided on the other end side of the hose 2, and a connection An extension pipe 4 connected to the pipe 3 and a suction tool 5 provided at the tip of the extension pipe 4 and having an opening for sucking dust are provided. The vacuum cleaner main body 1 incorporates an electric blower 6 for sucking dust and a dust collector 7 for collecting dust.

As shown in FIG. 2, the outline of the dust collector 7 includes a substantially cylindrical dust box main body 8, a cover 11 configured to close the upper surface of the dust box main body 8, and a handle 10 provided on the cover 11. And a lid 9 provided so as to close the lower surface of the dust box main body 8.

2 and 3, the lid 9 can be rotated by a hinge portion 13 provided in the dust box body 8 and is locked to the dust box body 8 by a buckle 18. Further, the lid 9 is air tight (maintained airtight) with the dust box body 8 by a packing D29 attached to the lid 9.

Further, the lid 9 is configured to be unlocked and opened / closed by rotation of the buckle 18. When the push lever 12 is pressed, the buckle 18 is opened by the slider 47 being lowered, and the lid 9 is opened (see FIGS. 3 and 6). The cover 11 is engaged with the dust box body 8 by the buckle 15 and the claw portion 14 (see FIG. 2).

As shown in FIGS. 4, 5, and 6, a substantially cylindrical primary filter 21 is provided on the primary filter mounting frame 57 concentrically with the dust box body 8 in the dust box body 8. Further, below the primary filter 21, an umbrella-shaped extension 22 extending toward the dust accumulation space 52 is attached to the primary filter mounting frame 57 by means such as fitting or welding with a claw. ing. The extending portion 22 includes a slope 58 and a flange 59 that extends vertically downward from the slope 58.

Above the primary filter 21, a secondary filter 23 formed in a pleat shape is provided. Above the secondary filter 23, a dust removing unit 24 for dropping dust accumulated in the secondary filter 23 by means such as vibration, and a motor unit 25 serving as a means for applying vibration to the dust removing unit 24 are provided. (See FIGS. 4 and 6).

The primary filter 21 is made of a metal material, and the surface portion thereof is not provided with an uneven shape made of resin or the like. With this configuration, the swirl flow smoothly flows around the primary filter 21 and the dust separation efficiency can be increased, and the wrapping of dust and the like around the primary filter 21 can be reduced. Note that this effect can be further enhanced by subjecting the surface of the primary filter 21 to polishing. Moreover, the primary filter 21 can be kept clean by performing antibacterial treatment.

The dust-mixed air sucked from the suction tool 5 is sucked into the suction port B17 provided in the dust box body 8 via the suction port 1a provided in front of the cleaner body 1 (see FIG. 3). ). The side on which the air inlet B17 is provided is referred to as the rear side of the dust collector 7.

The air sucked into the air inlet B17 flows into the cyclone space 31 formed by the outer peripheral surface of the primary filter 21 and the inner peripheral surface of the outer wall 54 of the dust box body 8, and cotton dust is removed by the swirling flow generated there. Centrifugation is performed into main dust and air containing fine dust (see FIG. 5). Dust mainly consisting of cotton dust passes through the dust collecting passage 32 formed between the outer peripheral surface of the inclined surface 58 of the extending portion 22 and the inner peripheral surface of the inclined portion 53 of the dust box body 8, and extends to the extending portion. The dust is accumulated in a substantially cylindrical dust accumulation space 52 provided below 22.

As shown in FIG. 5, the width L 1 of the cyclone space 31 is wider than the width L 2 of the dust collection passage 32. In addition, the inner diameter R4 of the dust accumulation space 52 (the inner diameter of the lower outer wall 71 of the dust box body 8) is larger than the inner diameter R3 of the cyclone space (that is, the inner diameter of the outer wall 54 of the narrow central portion of the dust box body 8). It is getting bigger. The dust box main body 8 has an inclined portion 53 that expands in accordance with the shape of the extending portion 22 between the outer wall 54 and the lower outer wall 71.

The upper end of the extended portion 22 is at a position above the upper end of the inclined portion 53, and the lower end of the extended portion 22 is at a position lower than the lower end of the inclined portion 53. With this configuration, the path from the cyclone space 31 toward the dust accumulation space 52 is narrowed, so that a pressing force is generated, and the dust accumulated in the dust accumulation space 52 can be prevented from rising to the cyclone space 31. In addition, although the lower end of the extension part 22 was in the position below the lower end of the inclination part 53, even if it is a case where the lower end of the extension part 22 is located in the middle of the inclination part 53, a path | route is narrow. Since this is the same, the above-described effects can be obtained.

7, when viewed from the lid 9 side (lower side), the extension 22 and the inclined portion 53 of the dust box body 8 cover the upper ceiling (ie, Since the cyclone space 31 is difficult to see from the dust accumulation space 52, the dust mainly consisting of cotton dust accumulated in the dust accumulation space 52 is less likely to return to the cyclone space 31 and the dust collection efficiency can be improved.

As shown in FIG. 5, in the dust collector 7 of the present embodiment, the outer peripheral surface of the inclined surface 58 of the extending portion 22 and the inner peripheral surface of the inclined portion 53 of the dust box body 8 are substantially parallel. It is configured as follows. Thereby, the disturbance of the swirl flow can be reduced, dust can be prevented from returning from the dust accumulation space 52 to the cyclone space 31, and the dust can be prevented from clogging in the dust collecting passage 32. Note that the width L2 of the dust collecting passage 32 can be adjusted by changing the position of the extending portion 22 up and down while maintaining substantially parallelism.

Also, the width L2 of the dust collecting passage 32 can be gradually increased or decreased as it goes downward. If the width L2 of the dust collection passage 32 is increased toward the dust accumulation space 52, the inclination of the inclined portion 53 in FIG. 5 can be made gentle. Therefore, since the height dimension of the dust collector 7 can be reduced, a compact configuration can be realized. On the other hand, if the width L2 of the dust collection passage 32 is gradually reduced toward the dust accumulation space 52, the force for pressing the dust in the direction of the dust accumulation space 52 is increased. Returning to the cyclone space 31 can be further suppressed.

The outer diameter R3 of the cyclone space 31 (the inner diameter of the outer wall 54) is configured to be larger than the maximum outer diameter R2 of the extending portion 22 (the outer diameter of the flange 59). Thereby, even when the primary filter 21 and the extending part 22 are configured as one part as shown in FIG. 4, the dust box body 8 can be inserted and removed from above, so that a structure with excellent assemblability can be realized. .

Further, at least a part of the dust box main body 8 and the extending part 22 is made of a transparent material. Thereby, since the amount of dust accumulated in the dust accumulation space 52 and the extension 22 can be confirmed from the outside, it is easy for the user to determine the timing of throwing away the garbage.

In the present embodiment, the extending portion 22 includes a flange 59 that extends vertically downward from the lower end of the slope 58. Thereby, the dust in the dust accumulation space 52 is compressed, the return to the cyclone space 31 can be prevented, and the dust collection performance can be enhanced.

As shown in FIGS. 5, 6, and 7, a substantially cylindrical wall portion 60 is provided inside the extending portion 22 provided at the lower portion of the primary filter 21. By forming the wall portion 60, an internal dust accumulation space 52 a can be further formed inside the wall portion 60 and outside the inner cylinder 33.

The dust sucked into the dust accumulation space 52 is first held and accumulated in the inner dust accumulation space 52a. Next, after the internal dust accumulation space 52a is full, the dust is held and accumulated in the external dust accumulation space 52b outside the wall portion 60 and inside the extension portion 22. With this configuration, it is possible to further prevent the dust accumulated in the dust accumulation space 52 from returning to the cyclone space 31 range.

A cutout portion 61 is provided in a part of the cylindrical wall portion 60.

FIG. 8 is a perspective view for explaining the configuration of the notch 61 provided in the wall 60 of the dust collector 7 in the first embodiment of the present invention. In the present embodiment, four notches 61 are provided with an equal width. However, the present invention is not limited to four cutouts 61.

By forming at least one notch 61, dust easily enters the internal dust accumulation space 52a inside the wall 60 from the notch 61. In addition, the pressure of the air in the internal dust accumulation space 52 a inside the wall portion 60 can be released through the cutout portion 61. As a result, the pressure in the internal dust storage space 52a can be reduced, so that dust can be held and easily stored in the internal dust storage space 52a. Therefore, it is possible to further prevent the dust accumulated in the internal dust accumulation space 52a from returning to the external dust accumulation space 52b and further to the cyclone space 31 range. In addition, when providing the notch part 61 independently, it can be used without impairing the external appearance in the state accommodated in the cleaner body 1 by providing in the position of the dust collector 7 rear side.

Here, pet hair such as dogs and cats and human hair (hereinafter simply referred to as hair etc.) contained in the dust is transferred from the internal dust storage space 52a to the external dust storage space 52b, and further to the cyclone space. Suppose that it is about to return to 31. In this case, hair or the like rides on the swirling airflow of the cyclone and rotates around the lower end of the wall portion 60 while being pulled from the lower end of the wall portion 60 toward the external dust accumulation space 52b and further toward the cyclone space 31. In such a case, the hair and the like are caught by the cutout portion 61, so that it can be prevented from being pulled further. Therefore, it is possible to prevent hair or the like from returning to the cyclone space 31 and wrapping around the primary filter 21.

Further, when a plurality of cutout portions 61 are formed, the air pressure in the internal dust accumulation space 52a can be dispersed and released through the plurality of cutout portions 61. Thereby, dust can be uniformly distributed and held in the internal dust accumulation space 52a, and can be easily accumulated. Therefore, it is possible to further prevent the dust accumulated in the internal dust accumulation space 52a from returning to the external dust accumulation space 52b and further to the cyclone space 31.

Further, by providing a plurality of cutout portions 61, hairs and the like contained in the dust that is about to return to the cyclone space 31 can be hooked by the plurality of cutout portions 61. The effect of preventing can be further enhanced. Therefore, it is possible to further enhance the effect of preventing hair and the like from returning to the cyclone space 31 and wrapping around the primary filter 21.

Further, as shown in FIG. 5, the upper end portions of the plurality of cutout portions 61 are configured to be above the lower end portion of the extending portion 22. That is, the upper end portion of the cutout portion 61 does not protrude from the lower end portion of the extension portion 22. The notch 61 serves as a flow path for guiding dust and air inside the internal dust accumulation space 52a to the outside external dust accumulation space 52b. Therefore, when the upper end part of the notch part 61 protrudes from the lower end part of the extension part 22, it is difficult to efficiently guide the dust in the internal dust accumulation space 52a. In some cases, dust in the internal dust accumulation space 52a may leak to the outside of the extending portion 22 and return to the cyclone space 31.

Further, in the present embodiment, of the four notches 61, the notch 61a provided on the rear side of the dust collector 7 is the notch having the deepest opening and the largest opening. As a result, the deepest cutout 61 a becomes a flow path that guides air and dust in the internal dust accumulation space 52 a to the external dust accumulation space 52 b and further to the cyclone space 31.

In the present embodiment, among the four cutout portions 61 provided in the wall portion 60, the cutout portion 61a having the largest opening is provided at the position on the rear side of the dust collector 7, It can be used without impairing the appearance in the state of being housed in the cleaner body 1. Furthermore, by providing the notch 61a having the largest opening on the rear side of the dust collector 7, dust can be easily collected from the rear when the dust collector 7 is disposed obliquely with the rear side down. .

In the present embodiment, as shown in FIG. 5, the lower end portion of the wall portion 60 formed inside the umbrella-like extension portion 22 is positioned higher than the lower end portion of the umbrella-like extension portion 22. Forming. That is, the lower end portion of the wall portion 60 is protruded from the lower end portion of the extending portion 22. Thereby, the flow of air and dust from the internal dust storage space 52a to the external dust storage space 52b can be made smooth.

The dust is first held and stored in the inner internal dust storage space 52a. Next, after the internal dust storage space 52a is full, the dust is held and stored in the outer external dust storage space 52b. At this time, the lower end portion of the substantially cylindrical wall portion 60 is formed lower than the lower end portion of the umbrella-like extension portion 22, so that the dust accumulated in the internal dust accumulation space 52a passes through the external dust accumulation space 52b and is rapidly increased. It can be prevented from coming out into the space 31 and further prevented from being retained and accumulated in the external dust accumulation space 52b from the internal dust accumulation space 52a and returning to the cyclone space 31 range.

In the dust collector 7 in the present embodiment and the vacuum cleaner 50 using the dust collector 7, the air containing fine dust separated in the cyclone space 31 passes through the primary filter 21, and the secondary filter 23 removes fine dust. Filtered. Only air that does not contain fine dust passes through the secondary filter 23, passes through the air inlet A 16 (see FIG. 3), and is sucked into the electric blower 6.

The fine dust accumulated on the secondary filter 23 is vibrated by the motor unit 25 of the dust removing unit 24 provided above the secondary filter 23 when the operation of the electric blower 6 is stopped (FIGS. 5 and 6). reference). Thereby, fine dust is peeled off from the secondary filter 23. The peeled fine dust passes through the space inside the primary filter mounting frame 57 and accumulates in the inner cylinder 33 provided below the primary filter 21 and inside the extending portion 22.

The inner cylinder 33 serves as a rotation center of air and dust that rotates in the dust accumulation space 52. The presence of the inner cylinder 33 enables smooth rotation.

As shown in FIGS. 5 and 6, the upper portion of the inner cylinder 33 has an inclined shape so that the peeled fine dust can be easily guided to the bottom of the inner cylinder 33. A return portion 55 is provided inside the inner cylinder 33, and even if the dust collector 7 is turned upside down, the fine dust accumulated at the bottom of the inner cylinder 33 again becomes the secondary filter 23. It can be prevented from returning to the side and reattaching. The inner cylinder 33 communicates with the primary filter 21. Although the lower end of the inner cylinder 33 is open, it is closed by a packing E30 provided on the back surface of the lid 9, so that the inner cylinder 33 and the dust storage space 52 are isolated.

As shown in FIG. 5, the diameter of the primary filter mounting frame 57 above the primary filter 21 is larger than the outer diameter R 1 of the primary filter and the inner diameter of the outer wall 54 of the dust box body 8 that forms the cyclone space 31. It is larger than R3. The primary filter mounting frame 57 is inserted from above the dust box body 8 and is held in pressure contact with the holding rib 56 by the packing B27.

The secondary filter 23 is provided above the primary filter 21, and a packing A 26 and a packing B 27 are attached to the outer periphery of the secondary filter 23. Plays the role of

The outer diameter of the secondary filter 23 is larger than the outer diameter R1 of the primary filter 21, and the air flow resistance is reduced as much as possible. Therefore, the outer diameter of the upper portion of the dust box body 8 is larger than the inner diameter R3 of the outer wall 54 of the cyclone space 31. That is, the dust box body 8 has a constricted shape as a whole.

Here, the dust removal of the secondary filter 23 will be described.

As shown in FIG. 5 and FIG. 6, the dust removing portion 24 is configured by connecting a dust removing plate 44 and a rail 41 by a shaft portion 43 by a connecting means such as a screw. In the motor unit 25, a crankshaft 37 attached to the rotation shaft of the motor 40 is connected to the linear vibrator 39 via a connecting rod 38. These members are surrounded by a motor cover 35 and a motor case 36, and are attached to the case body 46 by connecting means such as screws.

The motor 40 is connected to an electric board 49 attached to the case body 46, and a capacitor 48 disposed on the electric board 49 is connected to the terminal 19 (not shown) by charging means (not shown) provided on the cleaner body 1 side. It is charged via (see FIG. 3). The switch 34 discharges the current accumulated in the capacitor 48 to rotate the motor 40 and vibrate the linear vibrator 39. The linear vibrator 39 is connected to the rail 41 and imparts vibration to the secondary filter 23 by transmitting vibration (vibration in the left-right direction indicated by arrows in FIG. 5) to the dust removing plate 44. Thereby, the fine dust accumulated in the secondary filter 23 can be peeled off.

The case body 46 is connected to the cover 11 by an inner wall 45 and connecting means such as screws, and is held by sandwiching the rail 41 between the case body 46 and a rail holding portion 42 provided on the inner wall 45. .

In the present embodiment, the dust box main body 8 and the extending portion 22 have been described as being substantially cylindrical. However, as shown in FIGS. 6 and 7, a part of the cylindrical shape is used in relation to other components. The case where no is formed is also included, and the points of action and effect are also the same.

FIG. 9 is a rear view showing another example of the extending portion 22 of the dust collector 7 according to the first embodiment of the present invention. As shown in FIG. 9, a slit 81 may be provided in the flange 59 portion of the extension 22. By forming the slit 81, the pressure of the air in the dust accumulation space 52 inside the extension 22 can be released through the slit 81. As a result, the pressure in the dust accumulation space 52 inside the extension 22 can be reduced to make it easier to hold and accumulate dust, and the dust accumulated in the dust accumulation space 52 returns to the cyclone space 31 range. This can be further prevented.

Here, when pet hairs such as dogs and cats and human hairs (hereinafter simply referred to as hairs) contained in the dust are about to return from the dust accumulation space 52 to the cyclone space 31. Is assumed. In this case, the lower end of the extending portion 22 is rotated while hair or the like is pulled from the lower end of the extending portion 22 (the lower end of the flange 59) toward the primary filter 21 by riding on the swirling airflow of the cyclone. Even in this case, the hair or the like can be prevented from being caught by the slit 81 and further pulled upward. Therefore, by providing the slit 81, it is possible to prevent the hair or the like from being wound around the primary filter 21.

Further, when a plurality of slits 81 are formed, the air pressure in the dust accumulation space 52 inside the extending portion 22 can be dispersed and released through the plurality of slits 81. Thereby, dust can be uniformly dispersed and held in the dust accumulation space 52 inside the extension portion 22 to facilitate accumulation. Therefore, it is possible to further prevent the dust accumulated in the dust accumulation space 52 from returning to the cyclone space 31.

Further, by providing a plurality of slits 81, hairs and the like contained in the dust that is about to return to the cyclone space 31 can be hooked by the plurality of slits 81, so that it is prevented from being pulled further upward. The effect can be further enhanced. Therefore, the effect of preventing hairs from returning to the cyclone space 31 and wrapping around the primary filter 21 can be further enhanced.

In addition, since the slit 81 is formed in the flange 59 extending vertically from the lower end of the extension part 22, the air current is discharged toward the outer peripheral direction of the umbrella-like extension part 22, thereby turning the cyclone space 31. A smooth flow can be ensured without obstructing the flow of the airflow.

It is also possible to form the slit 90 provided at the lower end of the extending portion 22 by inclining it in the direction along the tangential vector direction of the swirling airflow in the cyclone space 31 (see FIG. 16). In this configuration, since the airflow is easily released toward the tangential vector direction of the swirling airflow, a smooth flow can be ensured without hindering the flow of the swirling airflow into the cyclone space 31.

Moreover, by providing the slit 81 at the lower end of the umbrella-like extension part 22 at the rear side position of the dust collector 7, it can be used without impairing the appearance in the state of being housed in the cleaner body 1.

Furthermore, an easy-to-use vacuum cleaner can be provided by configuring the vacuum cleaner 50 provided with the dust collector 7 in the present embodiment.

(Second Embodiment)
Next, a dust collector 107 and a vacuum cleaner 150 using the dust collector 107 according to a second embodiment of the present invention will be described with reference to the drawings. FIG. 10 is a perspective view showing the overall configuration of the electric vacuum cleaner 150 provided with the dust collector 107 in the second embodiment of the present invention, and FIG. 11 is an oblique view showing the appearance of the dust collector 107 It is the perspective view seen from the front. FIG. 12 is a perspective view showing the external appearance of the dust collector 107 as seen from an oblique rear side, and FIG. 13 is a perspective view showing the internal structure of the dust collector 107. 14 is a cross-sectional view of the dust collector 107, FIG. 15 is a diagram showing a cross-sectional structure of the dust collector 107, and FIG. 16 is a bottom view of the dust collector 107 as viewed from below. It is a figure showing a section structure.

As shown in FIG. 10, the dust collector 107 in the present embodiment is housed in a vacuum cleaner 150. The vacuum cleaner 150 includes a vacuum cleaner main body 101, a hose 102 connected at one end to a suction port 101a provided in front of the vacuum cleaner main body 101, a connection pipe 103 provided at the other end of the hose 102, and a connection. An extension pipe 104 connected to the pipe 103 and a suction tool 105 provided at the tip of the extension pipe 104 and having an opening for sucking dust are provided. The vacuum cleaner main body 101 incorporates an electric blower 106 for sucking dust and a dust collector 107 for collecting dust.

As shown in FIG. 11, the dust collector 107 includes a substantially cylindrical dust box main body 108, a cover 111 configured to close the upper surface of the dust box main body 108, and a handle 110 provided on the cover 111. And a lid 109 provided so as to close the lower surface of the dust box main body 108.

11 and 12, the lid 109 can be rotated by a hinge portion 113 provided on the dust box main body 108, and is locked to the dust box main body 108 by a buckle 118. The lid 109 is airtight (maintained airtight) with the dust box body 108 by a packing D129 attached to the lid 109.

Further, the lid 109 is configured to be unlocked and opened / closed by rotation of the buckle 118. When the push lever 112 is pushed, the slider 147 is lowered to open the buckle 118 and open the lid 109 (see FIGS. 12 and 15). The cover 111 is engaged with the dust box body 108 by a buckle 115 and a claw portion 114 (see FIG. 11).

As shown in FIGS. 13, 14, and 15, a substantially cylindrical primary filter 121 is provided on the primary filter mounting frame 157 concentrically with the dust box body 108 in the dust box body 108. Also, below the primary filter 121, an umbrella-shaped extension 122 that extends toward the dust accumulation space 152 is attached to the primary filter mounting frame 157 by means such as fitting or welding with a claw. ing. The extending part 122 has a slope 158 and a flange 159 extending vertically downward from the slope 158.

A secondary filter 123 formed in a pleat shape is provided above the primary filter 121. Above the secondary filter 123, a dust removing portion 124 for dropping dust accumulated in the secondary filter 123 by means such as vibration, and a motor portion 125 serving as a means for applying vibration to the dust removing portion 124 are provided. (See FIGS. 13 and 15).

The primary filter 121 is made of a metal material, and the surface portion thereof is not provided with an uneven shape made of resin or the like. With this configuration, the swirl flow smoothly flows around the primary filter 121, and the dust separation efficiency can be increased, and the wrapping of dust and the like around the primary filter 121 can be reduced. Note that this effect can be further enhanced by subjecting the surface of the primary filter 121 to a polishing process. Moreover, the primary filter 121 can be kept clean by performing antibacterial treatment.

The dust-mixed air sucked from the suction tool 105 is sucked into the suction port B117 provided in the dust box body 108 via the suction port 101a provided in front of the cleaner body 101 (see FIG. 12). . The side on which the air inlet B117 is provided is referred to as the rear side of the dust collector 107.

The air sucked into the air inlet B117 flows into the cyclone space 131 formed by the outer peripheral surface of the primary filter 121 and the inner peripheral surface of the outer wall 154 of the dust box body 108, and swirl flow generated there removes cotton dust. Centrifugation is performed into main dust and air containing fine dust (see FIG. 14). Dust mainly consisting of cotton dust passes through the dust collecting passage 132 formed between the outer peripheral surface of the inclined surface 158 of the extending portion 122 and the inner peripheral surface of the dust box main body 108, and below the extending portion 122. It is accumulated in the substantially cylindrical dust accumulation space 152 provided.

As shown in FIG. 14, the width L 1 of the cyclone space 131 is wider than the width L 2 of the dust collection passage 132. Further, the inner diameter R4 of the dust accumulation space 152 (the inner diameter of the lower outer wall 171 of the dust box body 108) is larger than the inner diameter R3 of the cyclone space 131 (that is, the inner diameter of the outer wall 154 in the narrow central portion of the dust box body 108). Is also getting bigger. The dust box main body 108 has an inclined portion 153 that extends in accordance with the shape of the extending portion 122 between the outer wall 154 and the lower outer wall 171.

The upper end of the extending part 122 is located above the upper end of the inclined part 153, and the lower end of the extending part 122 is located below the lower end of the inclined part 153. With this configuration, since the path from the cyclone space 131 toward the dust accumulation space 152 is narrowed, a pressing force is generated, and the dust accumulated in the dust accumulation space 152 can be prevented from rising to the cyclone space 131. In addition, although the lower end of the extension part 122 was in the position below the lower end of the inclination part 153, even if it is a case where the lower end of the extension part 122 is located in the middle of the inclination part 153, a path | route is narrow. Since this is the same, the above-described effects can be obtained.

Further, as shown in FIG. 16, when viewed from the lid 109 side (lower side), the upper ceiling is covered with the extended portion 122 and the inclined portion 153 of the dust box main body 108 (that is, Therefore, it is difficult to see the cyclone space 131 from the dust accumulation space 152), and dust mainly composed of cotton dust accumulated in the dust accumulation space 152 is less likely to return to the cyclone space 131, thereby improving dust collection efficiency.

As shown in FIG. 14, in the dust collector 107 of the present embodiment, the outer peripheral surface of the inclined surface 158 of the extending portion 122 and the inner peripheral surface of the inclined portion 153 of the dust box body 108 are substantially parallel. It is configured as follows. Thereby, the disturbance of the swirl flow can be reduced, the return from the dust accumulation space 152 to the cyclone space 131 can be prevented, and the dust can be prevented from clogging in the dust collection passage 132. Note that the width L2 of the dust collection passage 132 can be adjusted by changing the position of the extending portion 122 up and down while maintaining substantially parallelism.

Also, the width L2 of the dust collection passage 132 can be gradually increased or decreased as it goes downward. If the width L2 of the dust collection passage 132 is increased toward the dust accumulation space 152, the inclination of the inclined portion 153 in FIG. 14 can be made gentle. Therefore, since the height dimension of the dust collector 107 can be reduced, a compact configuration can be realized. On the other hand, if the configuration is such that the width L2 of the dust collection passage 132 is gradually narrowed toward the dust accumulation space 152, the force for pressing the dust toward the dust accumulation space 152 is increased. Returning to the cyclone space 131 can be further suppressed.

Also, the outer diameter R3 of the cyclone space 131 (the inner diameter of the outer wall 154) is configured to be larger than the maximum outer diameter R2 of the extending portion 122 (the outer diameter of the flange 159). Thereby, even when the primary filter 121 and the extending part 122 are configured as one part as shown in FIG. 13, the dust box body 108 can be inserted and removed from above, so that a structure with excellent assemblability can be realized. .

Further, at least a part of the dust box main body 108 and the extending part 122 is configured using a transparent material. Thereby, since the amount of dust accumulated in the dust accumulation space 152 and the extension part 122 can be confirmed from the outside, it is easy for the user to determine when to throw away the garbage.

In the present embodiment, the extending part 122 includes a flange 159 extending vertically downward from the lower end of the inclined surface 158. Thereby, the dust in the dust accumulation space 152 is compressed, the return to the cyclone space 131 can be prevented, and the dust collection performance can be improved.

Further, as shown in FIGS. 13, 15, and 16, a slit 90 is formed at a part of the lower end of the extending portion 122 provided at the lower portion of the primary filter 121. By forming the slit 90, the pressure of the air in the dust accumulation space 152 inside the extension part 122 can be released through the slit 90. As a result, the pressure in the dust accumulation space 152 inside the extension 122 can be reduced to make it easier to hold and accumulate dust, and the dust accumulated in the dust accumulation space 152 returns to the cyclone space 31 range. This can be further prevented.

Here, when pet hair such as dogs and cats and human hair (hereinafter simply referred to as hair etc.) contained in the dust is about to return from the dust accumulation space 152 to the cyclone space 131. Is assumed. In this case, the lower end of the extending portion 122 is rotated while hair or the like is pulled from the lower end of the extending portion 122 (the lower end of the flange 159) toward the primary filter 121 by riding on the swirling airflow of the cyclone. Even in this case, hair or the like can be prevented from being caught by the slit 90 portion and being pulled further upward. Therefore, by providing the slit 90, it is possible to prevent the hair or the like from being wound around the primary filter 121.

Further, when a plurality of slits 90 are formed, the air pressure in the dust accumulation space 152 inside the extension part 122 can be dispersed and released through the plurality of slits 90. Thereby, dust can be uniformly dispersed and held in the dust accumulation space 152 inside the extending portion 122 to facilitate accumulation. Therefore, it is possible to further prevent the dust accumulated in the dust accumulation space 152 from returning to the cyclone space 131.

Further, by providing a plurality of slits 90, hairs and the like contained in the dust that is about to return to the cyclone space 131 can be hooked by the plurality of slits 90, so that it is prevented from being pulled further upward. Can be further enhanced. Therefore, it is possible to further enhance the effect of preventing hair and the like from returning to the cyclone space 131 and being wound around the primary filter 121.

Further, since the slit 90 is formed in the flange 159 extending vertically from the lower end of the extension part 122, the air current is discharged toward the outer peripheral direction of the umbrella-like extension part 122, thereby turning the cyclone space 131. A smooth flow can be ensured without obstructing the flow of the airflow.

Also, as shown in FIG. 16, it is possible to form the slit 90 provided at the lower end of the extending portion 122 by inclining it in the direction along the tangential vector direction of the swirling airflow in the cyclone space 131. In this configuration, since the airflow is easily released toward the tangential vector direction of the swirling airflow, a smooth flow can be ensured without hindering the flow of the swirling airflow into the cyclone space 131.

Moreover, by providing the slit 90 at the lower end of the umbrella-shaped extension part 122 at the rear position of the dust collector 107, it can be used without impairing the appearance in the state of being housed in the cleaner body 101.

In dust collector 107 and vacuum cleaner 150 using the same in the present embodiment, air containing fine dust separated in cyclone space 131 passes through primary filter 121, and fine dust is removed by secondary filter 123. Filtered. Only air that does not contain fine dust passes through the secondary filter 123, passes through the air inlet A 116 (see FIG. 12), and is sucked into the electric blower 106.

The fine dust accumulated on the secondary filter 123 is vibrated by the motor part 125 of the dust removing part 124 provided above the secondary filter 123 when the operation of the electric blower 106 is stopped (FIGS. 14 and 15). reference). Thereby, fine dust is peeled off from the secondary filter 123. The peeled fine dust passes through the space inside the primary filter mounting frame 157 and is accumulated in the inner cylinder 133 provided below the primary filter 121 and inside the extending portion 122.

The inner cylinder 133 serves as a rotation center of air and dust that rotates in the dust accumulation space 152. Due to the presence of the inner cylinder 133, the rotation can be performed smoothly.

As shown in FIGS. 14 and 15, the upper part of the inner cylinder 133 has an inclined shape so that the peeled fine dust can be easily guided to the bottom of the inner cylinder 133. A return portion 155 is provided inside the inner cylinder 133, and even if the dust collector 107 is turned upside down, the fine dust accumulated at the bottom of the inner cylinder 133 is again filtered by the secondary filter. It can be prevented from returning to the 123 side and reattaching. The inner cylinder 133 communicates with the primary filter 121. The lower end of the inner cylinder 133 is open, but is closed by a packing E130 provided on the back surface of the lid 109, so that the inner cylinder 133 and the dust storage space 152 are isolated.

As shown in FIG. 14, the diameter of the primary filter mounting frame 157 above the primary filter 121 is larger than the outer diameter R1 of the primary filter, and the inner diameter R3 of the outer wall 154 of the dust box body 108 that forms the cyclone space 131. Is bigger than. The primary filter mounting frame 57 is inserted from above the dust box main body 108 and is held in pressure contact with the holding rib 156 by the packing B127.

The secondary filter 123 is provided above the primary filter 121, and a packing A 126 and a packing B 127 are attached to the outer periphery of the secondary filter 123, and each of the primary filter attachment frame 157 is made of anti-vibration and air tight. Playing a role.

The outer diameter of the secondary filter 123 is larger than the outer diameter R1 of the primary filter 121, and the air flow resistance is reduced as much as possible. Therefore, the outer diameter of the upper part of the dust box main body 108 is larger than the inner diameter R3 of the outer wall 154 of the cyclone space 131. That is, the dust box body 108 has a constricted shape as a whole.

Next, the dust removal of the secondary filter 123 will be described.

As shown in FIGS. 14 and 15, the dust removing portion 124 is configured by connecting a dust removing plate 144 and a rail 141 by a shaft portion 143 by a connecting means such as a screw. In the motor unit 125, a crankshaft 137 attached to the rotation shaft of the motor 140 is connected to the linear vibrator 139 via a connecting rod 138. These members are surrounded by a motor cover 135 and a motor case 136, and are attached to the case body 146 by connecting means such as screws.

The motor 140 is connected to an electric board 149 attached to the case body 146, and a capacitor 148 disposed on the electric board 149 connects the terminal 119 with charging means (not shown) provided on the cleaner body 101 side. Is charged through. The switch 134 discharges the current accumulated in the capacitor 148 to rotate the motor 140 and vibrate the linear vibrator 139. The linear vibrator 139 is connected to the rail 141 and imparts vibration to the secondary filter 123 by transmitting vibration (vibration in the left-right direction as indicated by arrows in FIG. 14) to the dust removing plate 144. Thereby, the fine dust accumulated in the secondary filter 123 can be peeled off.

The case body 146 is connected to the cover 111 by an inner wall 145 and connecting means such as a screw, and is held by sandwiching the rail 141 between the case body 146 and a rail holding portion 142 provided on the inner wall 145. .

In the present embodiment, the dust box main body 8 and the extending portion 22 have been described as being substantially cylindrical. However, as shown in FIGS. 15 and 16, a part of the cylindrical shape is used in relation to other components. The case where no is formed is also included, and the points of action and effect are also the same.

Furthermore, an easy-to-use vacuum cleaner can be provided by configuring the vacuum cleaner 150 provided with the dust collector 107 in the present embodiment.

As described above, according to the present invention, dust accumulated in the dust accumulation space, pet hair, human hair, and the like can be prevented from returning to the cyclone space. It is useful as a vacuum cleaner using it.

DESCRIPTION OF SYMBOLS 1,101 Vacuum cleaner main body 1a, 101a Suction port 2,102 Hose 3,103 Connection pipe 4,104 Extension pipe 5,105 Suction tool 6,106 Electric blower 7,107 Dust collector 8,108 Dust box main body 9,109

Lid

10, 110

Handle

11, 111

Cover

12, 112

Lever

13, 113

Hinge part

14, 114

Claw part

15, 115

Buckle

16, 116 Air inlet A
17,117 Inlet B
18, 118 Buckle 19,119

Terminal

21, 121

Primary filter

22, 122

Extension part

23, 123

Secondary filter

24, 124

Dust removal part

25, 125

Motor part

26, 126 Packing A
27,127 Packing B
29,129 Packing D
30,130 Packing E
31, 131

Cyclone space

32, 132

Dust collection passage

33, 133

Inner cylinder

34, 134

Switch

35, 135

Motor cover

36, 136

Motor case

37, 137

Crankshaft

38, 138 Connecting

rod

39, 139

Linear vibrator

40, 140

Motor

41 , 141

Rail

42, 142

Rail holding part

43, 143

Shaft part

44, 144

Dust removal plate

45, 145

Inner wall

46, 146

Case body

47, 147

Slider

48, 148

Capacitor

49, 149 Electric substrate 50, 150

Electric vacuum cleaner

52, 152 Dust accumulating space 52a Internal dust accumulating space 52b External

dust accumulating space

53, 153

Inclined portion

54, 154

Outer wall

55, 155

Return portion

56, 156

Holding rib

57, 157 Primary

filter mounting frame

58, 158 Oblique 59,159 flange 60

walls

61,

61a notch

71 and 171 the lower

outer wall

81 and 90 slit

Claims

A substantially cylindrical dust box body;
A substantially cylindrical primary filter disposed concentrically with the dust box body in the dust box body;
A cyclone space formed between the inner peripheral surface of the dust box body and the outer peripheral surface of the primary filter;
A substantially cylindrical dust accumulation space provided below the cyclone space;
An umbrella-shaped extending portion provided at a lower portion of the primary filter and extending toward the dust accumulation space;
A dust collector comprising a substantially cylindrical wall provided inside the extension.
The dust collector according to claim 1, wherein a part of the wall portion has a cutout portion.
The dust collector according to claim 2, wherein the notch is provided on a rear side of the dust collector.
The dust collector according to claim 2, wherein a plurality of the cutout portions are formed.
The dust collector according to claim 4, wherein a notch having the largest opening among the plurality of notches is provided on the rear side of the dust collector.
The dust collector according to claim 1, wherein a lower end portion of the wall portion is formed at a position lower than a lower end portion of the extending portion.
The dust collector according to claim 2, wherein an upper end portion of the notch portion is formed at a position higher than a lower end portion of the extension portion.
The dust collector according to claim 1, further comprising a slit formed at a part of a lower end of the extension part.
The dust collector according to claim 8, wherein the slit is provided on a rear side of the dust collector.
The dust collector according to claim 8, wherein a plurality of the slits are formed.
The extension has a flange extending vertically from the lower end,
The dust collector according to claim 8, wherein the slit is formed in the flange.
The dust collector according to claim 8, wherein the slit is formed to be inclined in a direction along a tangential vector direction of a swirling airflow in the cyclone space.
A vacuum cleaner comprising the dust collecting device according to any one of claims 1 to 12.