TW201306788A - Dust collector and electrical vacuum cleaner using same - Google Patents

Abstract

A dust collector comprises a substantially cylindrical dust collector body in which a substantially cylindrical primary filter is arranged in a concentric manner. A cyclone space is formed between an inner surface of the dust collector body and an outer circumferential surface of the primary filter. A substantially cylindrical dust accumulation space is arranged under the cyclone space. An umbrella like extension section is provided below the primary filter and extends toward the dust accumulation space. A substantially cylindrical wall is arranged in the umbrella like extension section and a lower end of the cylindrical wall is formed to project in a manner of exceeding a lower end of the umbrella like extension section.

Description

Dust collecting device and electric vacuum cleaner using same Field of invention

The present invention relates to a dust collecting device and an electric vacuum cleaner using the same.

Background of the invention

In recent years, the dust collecting device of the cyclone vacuum cleaner is used to swirl the air sucked from the suction device together with the dust in the cylindrical dust collecting portion, and the dust doped into the air is separated by centrifugal force, and the separated dust is captured. Collect the dust collection chamber below the cylinder dust collection. Moreover, the air after the dust is separated is sucked into the suction side of the electric vacuum cleaner. However, it is a phenomenon that the dust collected in the dust collecting chamber is returned to the suction side. Therefore, a configuration is adopted in which the diameter of the cyclone chamber and the dust collecting chamber are changed, and a step is set to suppress the return (see, for example, Patent Document 1).

However, in the above configuration, it is not sufficient to suppress the return from the dust collecting chamber, and it is necessary to further improve the dust collecting effect. In addition, there is a problem that pet hair and human hair, such as a dog or a cat, which are contained in the dust, are returned to the range of the cyclone space and are wound around the primary filter.

[First technical literature]

[Patent Literature]

[Patent Document 1] JP-A-2000-135184

Summary of invention

[Summary of the Invention]

The dust collecting device of the present invention is arranged in a substantially cylindrical dust box body, and the primary cylindrical primary filter is arranged concentrically, and a cyclone is formed between the inner surface of the dust box body and the outer surface of the primary filter. space. A substantially cylindrical dust accumulation space is disposed below the cyclone space. An umbrella-like extension portion extending toward the dust accumulation space is provided at a lower portion of the primary filter. Further, a substantially cylindrical wall is provided on the inner side of the umbrella-like extending portion, and the lower end portion of the aforementioned substantially cylindrical wall is formed to protrude more than the lower end of the umbrella-shaped extending portion.

Thereby, it is possible to prevent the dust accumulated in the dust accumulation space from returning to the cyclone space, thereby improving the dust collecting effect, and also miniaturizing the dust collecting device itself.

Simple illustration

Fig. 1 is an overall perspective view of an electric vacuum cleaner including a dust collecting device according to a first embodiment of the present invention.

Fig. 2 is a perspective view of the dust collecting device according to Embodiment 1 of the present invention as seen obliquely from the front.

Fig. 3 is a perspective view of the dust collecting device according to Embodiment 1 of the present invention as seen obliquely from the rear.

Fig. 4 is a perspective view showing the internal structure of the dust collecting device according to the first embodiment of the present invention.

Figure 5 is a cross-sectional view taken along line B-B of Figure 3.

Figure 6 is a cross-sectional view taken along line A-A of Figure 2.

Figure 7 is a cross-sectional view taken along line C-C of Figure 6.

Detailed description of the preferred embodiment

[Formation for implementing the invention]

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Further, the inventors are not limited to the embodiment.

(Embodiment 1)

The electric vacuum cleaner using the dust collecting device according to the first embodiment of the present invention will be described with reference to Figs. 1 to 7 . 1 is a perspective view of an electric vacuum cleaner including a dust collecting device according to a first embodiment of the present invention. FIG. 2 is a perspective view of a dust collecting device according to Embodiment 1 of the present invention, and FIG. 3 is a dust collecting method according to Embodiment 1 of the present invention. Fig. 4 is a perspective view showing the internal structure of the dust collecting device according to the first embodiment of the present invention, Fig. 5 is a BB sectional view of Fig. 3, and Fig. 6 is a sectional view taken along line A of Fig. 2; Figure 7 is a cross-sectional view of CC in Figure 6.

As shown in Fig. 1, the electric vacuum cleaner using the dust collecting device of the first embodiment includes a vacuum cleaner body 1 and a hose 2 connected to a suction port 1a provided in front of the vacuum cleaner body 1. The connecting pipe 3 at the front end, the extension pipe 4 connected to the connecting pipe 3, and the suction device 5 provided at the front end of the extension pipe 4 and having an opening (not shown) for sucking dust. The electric vacuum cleaner main body 1 is provided with an electric blower 6 for sucking dust and a dust collecting device 7 for dust collecting dust.

As shown in Fig. 2, the dust collecting device 7 has a dust box body 8, a cover 11 that closes the upper surface of the dust box body 8, a handle 10 that is attached to the outer cover 11, and a dust box body that is closed. The cover 9 below the 8 is formed.

The cover 9 is rotatably provided by the pin portion 13 provided in the dust box body 8, and is locked to the dust box body 8 by the fastener 18. Also, by the sealing member attached to the cover 9 D29 makes the dust box body 8 airtight (maintaining airtightness).

As shown in Fig. 6, the cover 9 is unlocked by the fastener 18 to be opened and closed. When the pressing lever 12 is pressed, the slider 18 is lowered by the slider 47 to open the cover 9, and the cover 9 is opened. Further, the outer cover 11 is engaged with the dust box body by the buckle 15 and the claw portion 14.

In the dust box body 8, as shown in Fig. 5, the primary filter 21 is set to be slightly concentric. Below the primary filter 21, the umbrella-like extension 22 is attached to the primary filter mounting frame 57 by means of fitting or welding of the claws.

A secondary filter 23 forming a pleat shape is provided above the primary filter 21. Further, above the primary filter 21, a dust removing portion 24 for dropping dust accumulated in the secondary filter 23 by means of vibration or the like, and a motor portion 25 serving as means for imparting vibration to the dust removing portion 24 are provided.

The primary filter 21 is made of a metal material. The metal surface portion of the primary filter 21 is configured not to have a concavo-convex shape formed by a resin or the like. Thereby, the eddy current flows smoothly, the dust separation efficiency is improved, and the effect of hooking and winding the dust to the primary filter 21 is reduced. Further, the effect can be improved by performing mechanical polishing treatment, physical polishing treatment or electrolytic polishing treatment on the surface of the primary filter 21. Further, the primary filter 21 can be cleanly held by performing the antibacterial treatment on the surface of the primary filter 21.

The air doped with dust from the suction device 5 is sucked into the air inlet B17 provided in the dust box body 8 shown in Fig. 3 via the suction port 1a provided in front of the vacuum cleaner body 1. A cyclone space 31 is formed between the outer peripheral surface of the primary filter 21 and the inner surface of the dust box body 8. The air sucked into the suction port B17 flows to The cyclone space 31 is centrifugally separated into dust mainly composed of cotton wool and air containing fine dust by the eddy current generated by the cyclone space 31. The dust mainly composed of the batt is accumulated in the dust accumulation space 52 through the dust collecting passage 32 formed between the extending portion 22 and the dust box body 8.

Here, the width L1 of the cyclone space 31 is larger than the width L2 of the dust collecting passage 32. Further, the inner diameter R4 of the dust accumulating space 52 is larger than the outer diameter R3 of the cyclone space 31. Thereby, the dust box body 8 has the inclined part 53 which expands by the shape of the extension part 22.

The upper end of the extending portion 22 is located above the inclined portion 53, and the lower end of the extending portion 22 is located below the inclined portion 53. With this configuration, a force that is pressed downward by the flow of the airflow from the cyclone space 31 is prevented, and the dust accumulated in the dust accumulation space 52 is prevented from flying toward the cyclone space 31. Further, although the lower end of the extending portion 22 is located below the inclined portion 53, the same effect can be obtained even by the inclined portion 53.

Further, the extending portion 22 and the inclined portion 53 of the dust box body 8 are configured to form a top wall as viewed vertically from the side of the cover 9. Therefore, it is difficult for the dust mainly composed of the batt which accumulates in the dust accumulation space 52 to return to the cyclone space 31, and the dust collecting efficiency can be improved.

The inclined surface 58 of the extending portion 22 is formed to be substantially parallel with the inclined portion 53 of the dust box body 8. Thereby, the turbulence is prevented from being disturbed, and the return to the cyclone space 31 from the dust accumulating space 52 is prevented, and the dust is prevented from being clogged in the dust collecting passage 32. Further, by keeping the inclined surface 58 and the inclined portion 53 substantially parallel, the position of the upper end of the extending portion 22 is changed upward and downward, and the width L2 of the dust collecting passage 32 can be adjusted. That is, the width L2 may be gradually widened or narrowed as it goes downward.

Further, as the width L2 of the dust collecting passage 32 is made wider toward the dust accumulating space 52, the inclination of the inclined portion 53 can be made gentle, so that the height of the dust collecting device 7 can be kept low. Thereby, the dust collecting device becomes a small structure. In addition, when the width L2 of the dust collecting passage 32 is gradually narrowed toward the dust accumulating space 52, the force of pressing in the direction of the dust accumulating space 52 is increased, and the dust return of the dust accumulating space 52 can be further suppressed. Cyclone space 31.

The outer diameter R3 of the cyclone space 31 becomes larger than the maximum outer diameter R2 of the extension portion 22. With this configuration, even when the primary filter 21 and the extension portion 22 are configured as one piece, since the insertion can be taken out from above the dust box body 8, the assemblability is excellent.

Further, at least a part of the dust box body 8 and the extending portion 22 are made of a transparent material. As a result, the amount of dust accumulated in the umbrella-shaped interior of the dust accumulation space 52 and the extending portion 22 can be confirmed, so that the user can easily determine the time for the garbage to be discarded.

Further, in the present embodiment, the extending portion 22 includes a flange 59 extending downward from the lower end of the inclined surface 58 in the vertical direction. Thereby, the dust in the dust accumulation space 52 is compressed, and it is prevented from returning to the cyclone space 31, and the dust collecting performance can be improved.

Further, a substantially cylindrical wall 60 is provided inside the umbrella-like extending portion 22 provided at the lower portion of the primary filter 21. Thereby, the inner dust accumulation space 52a is further formed inside the substantially cylindrical wall 60 provided inside the umbrella-shaped extension part 22. Therefore, the dust is first held and accumulated in the inner internal dust storage space 52a.

Moreover, after the internal dust accumulation space 52a is full, the dust remains and accumulates The outer dust accumulating space 52b on the outer side. Thereby, it is possible to prevent the dust accumulated in the dust accumulation space 52 from returning to the range of the cyclone space 31.

Further, a part of the substantially cylindrical wall 60 formed inside the umbrella-like extending portion 22 is provided with a slit 61. By forming the slit 61, the dust easily enters the inner dust accumulating space 52a inside the substantially cylindrical wall 60 from the slit 61 portion. In addition, the air pressure of the internal dust accumulating space 52a in the extending portion 22 is released by the slit 61, and the pressure of the internal dust accumulating space 52a is lowered, so that the dust can be easily held and accumulated, thereby preventing the accumulation of the dust. The dust in the internal dust accumulating space 52a faces the external dust accumulating space 52b, and further returns to the range of the cyclone space 31.

In addition, the pet hair and the hair of a person, such as a dog and a cat, which are contained in the dust accumulated in the internal dust storage space 52a, accumulate from the lower end of the substantially cylindrical wall 60 toward the external dust even when the vortex of the cyclone is oscillated. The space 52b is further pulled toward the range of the cyclone space 31, and rotates toward the outer dust accumulation space 52b at the lower end of the wall 60, and further returns to the range of the cyclone space 31, and can also be hung in the slit 61 portion to prevent further outward direction. Being pulled. Thereby, it is possible to prevent the dust from returning to the range of the cyclone space 61, and the hair of the pet, such as a dog or a cat, and the hair of a person are wound around the primary filter 21.

Further, when the plurality of slits 61 are formed, the air pressure of the internal dust storage space 52a can be dispersed and released by the plurality of slits 61. Thereby, the dust is uniformly dispersed and held in the internal dust accumulation space 52a, and the dust is easily accumulated. As a result, the dust accumulated in the internal dust storage space 52a can be prevented from returning to the external dust accumulation space 52b and further returned to the range of the cyclone space 31.

Further, by the plurality of slits 61, the pet hair and the hair of a person such as a dog and a cat contained in the dust which seems to return to the range of the cyclone space 31 are caught, and the further pulling outward can be prevented. Therefore, it is possible to prevent the hair of a pet such as a dog or a cat and the hair of a person from returning to the range of the cyclone space 31 and to be wound around the primary filter 21.

Further, by lowering the lower end portion of the substantially cylindrical wall 60 formed inside the umbrella-like extending portion 22 longer than the lower end portion of the extending portion 22, the dust is first held and accumulated in the inner dust-accumulating space inside. 52a. Then, after the internal dust accumulation space 52a is full, the dust is held and accumulated in the outer external dust storage space 52b. At this time, the lower end portion of the substantially cylindrical wall 60 is formed to protrude longer than the lower end portion of the umbrella-shaped extending portion 22, and the dust accumulated in the internal dust accumulating space 52a is pressed away from the spin-air space 31. The state starts to accumulate in the external dust accumulation space 52b. Therefore, it is possible to prevent the dust accumulated in the internal dust accumulating space 52a from jumping over the external dust accumulating space 52b and suddenly rushing to the cyclone space 31. As a result, the dust can be reliably held and accumulated in the external dust storage space 52b from the internal dust storage space 52a, and the return to the range of the cyclone space 31 can be prevented.

Further, by providing the slit 61 provided in one portion of the substantially cylindrical wall 60 at the rear position of the dust collecting device 7, the appearance of the vacuum cleaner body 1 can be prevented from being damaged.

On the other hand, the air separated into fine dust in the cyclone space 31 passes through the primary filter 21, and the fine dust is filtered by the secondary filter 23. Further, only the air containing no fine dust passes through the secondary filter 23 and is sucked to the electric blower 6 through the intake port A16.

When the dust deposited on the secondary filter 23 is stopped during the operation of the electric blower 6, the dust is applied to the dust removing unit 24 provided above the secondary filter 23, and the motor portion 25 is vibrated to be separated from the secondary filter 23. . Further, the peeled fine dust is accumulated in the inner space 33 below the primary filter 21 and inside the extending portion 22 from the primary filter mounting frame 57 through the inner space.

The upper portion of the inner cylinder 33 has an inclined shape in order to easily guide the peeled fine dust to the bottom of the inner cylinder 33. A lining 55 is provided inside the inner cylinder 33. Even when the dust collecting device 7 is turned upside down, the lining 55 can prevent the fine dust accumulated in the inner cylinder 33 from returning to the secondary filter 23 side and reattaching. The inner cylinder 33 is in communication with the primary filter 21. The lower end of the opening of the inner cylinder 33 is isolated from the dust accumulating space 52 by the seal E30 provided on the cover 9.

The diameter of the primary filter 21 of the primary filter mounting frame 57 is larger than the outer diameter R1 of the primary filter and is also larger than the inner diameter R3 of the outer wall 54 of the dust box body 8 forming the cyclone space 31. The primary filter mounting frame 57 is inserted from above the dust box body 8 and is held by crimping with the retaining ribs 56 by the seal B27.

The secondary filter 23 is provided above the primary filter 21. A seal A26 and a seal B27 are attached to the outer circumference of the secondary filter 23, respectively. The seal A26 and the seal B27 respectively reach the primary filter mounting frame 57 to achieve the functions of vibration proof and airtight. The outer diameter of the secondary filter 23 is made larger than the outer diameter R1 of the primary filter 21, and is configured to minimize the flow resistance of the air. Accordingly, the outer diameter of the upper portion of the dust box body 8 becomes larger than the inner diameter R4 of the outer wall 54 of the cyclone space portion. That is, the dust box body 8 has a necked shape as a whole.

Next, the dust removal of the secondary filter 23 will be described. As number 5 As shown in FIG. 6 , the dust removing unit 24 is configured by connecting the dust removing plate 44 to the rail 41 by a coupling mechanism such as a screw. The motor portion 25 is coupled to the linear vibration element 39 via a connecting rod 38 via a crank shaft 37 attached to a rotating shaft of the motor 40. These are surrounded by the motor cover 35 and the motor casing 36, and are attached to the outer casing 46 by a coupling mechanism such as a screw.

The motor 40 is connected to a circuit board 49 attached to the outer casing 46. The capacitor 48 disposed on the circuit board 49 is charged by the charging mechanism provided on the side of the vacuum cleaner body 1 through the terminal 19. The current stored in the capacitor 48 by the switch 34 is discharged, the motor 40 is rotated, and the linear vibration element 39 is vibrated. The linear vibration element 39 is connected to the rail 41, and the vibration (the vibration in the left-right direction as shown in FIG. 5) is transmitted to the dust removing plate 44, and the secondary filter 23 is vibrated to remove the accumulated fine dust.

The outer casing 46 and the inner wall 45 are coupled to the outer casing 11 by a fastening mechanism such as a screw, and the outer casing 46 is held by the rail 41 held by the rail holding portion 42 provided on the inner wall 45.

Further, in the above-described embodiment, the dust box body 8 and the extending portion 22 are described as being cylindrical, but as shown in Fig. 6, in the case of the relationship with other parts, even if one of the cylindrical portions is not formed The role and effect are the same.

As described above, the dust collecting device of the present invention is in a substantially cylindrical dust box body, and the substantially cylindrical primary filter is arranged concentrically, and is in the outer surface of the dust box body and the outer periphery of the primary filter. A cyclone space is formed between the faces. A substantially cylindrical dust accumulation space is disposed below the cyclone space. An umbrella-shaped extension extending toward the dust accumulation space is provided at the lower portion of the primary filter Extension. Further, a substantially cylindrical wall is provided on the inner side of the umbrella-shaped extension portion, and the lower end portion of the substantially cylindrical wall is formed to protrude longer than the lower end portion of the umbrella-shaped extension portion.

Thereby, an internal dust accumulation space is further formed inside the substantially cylindrical wall provided inside the umbrella-shaped extending portion. Therefore, the dust is first held and accumulated in the inner dust accumulation space inside. After the internal dust accumulation space is completed, the dust is stored and accumulated in the dust accumulation space on the outer side, and the dust accumulated in the dust accumulation space can be further prevented from returning to the cyclone space range.

Further, the lower end portion of the substantially cylindrical wall forming the inner side of the umbrella-shaped extending portion is formed to protrude longer than the lower end portion of the umbrella-shaped extending portion, and the dust first holds and accumulates the inner internal dust accumulating space. Then, after the internal dust accumulation space is full, dust is held and accumulated in the external dust accumulation space on the outside. At this time, the lower end portion of the substantially cylindrical wall is formed to protrude longer than the lower end portion of the umbrella-shaped extending portion, and the dust accumulated in the internal dust accumulating space is pressed away from the lower side of the cyclone space. The accumulation of external dust accumulation space begins. Therefore, it is possible to prevent the dust accumulated in the internal dust accumulation space from passing over the external dust accumulation space and suddenly coming out to the cyclone space. As a result, the dust is reliably held and accumulated in the external dust accumulation space after the internal dust accumulation space, and the return to the cyclone space range can be further prevented.

Further, in the dust collecting device of the present invention, a slit is provided in a part of the substantially cylindrical wall formed inside the umbrella-like extending portion. Thereby, the dust becomes easy to enter the internal dust accumulation from the slit portion into the inner side of the substantially cylindrical wall. space. In addition, the pressure of the air in the internal dust accumulation space inside the extending portion is dissipated by the slit portion, and the pressure in the internal dust storage space is lowered, so that the dust is easily held and accumulated. As a result, it is possible to prevent the dust accumulated in the internal dust accumulation space from accumulating the space to the outside and returning further to the cyclone space range.

Moreover, the pet hair and the hair of a person, such as a dog and a cat, which are contained in the dust, can be hooked on the slit portion to prevent further pulling upward. Thereby, it is possible to prevent the pet hair and the hair of a person, such as a dog and a cat, which are contained in the dust, from returning to the cyclone space range and being wound around the primary filter.

Further, in the dust collecting device of the present invention, the slit of the substantially cylindrical wall inside the plurality of umbrella-shaped extending portions is formed. Thereby, the pressure of the air of the internal dust accumulation space can be dispersed and dissipated by the plurality of slit portions. Therefore, the dust is uniformly dispersed and held in the internal dust accumulation space, and the dust is easily accumulated. As a result, it is possible to prevent the dust accumulated in the internal dust accumulation space from accumulating the space toward the external dust and returning further to the cyclone space.

Further, the pet hair and the human hair, such as dogs and cats contained in the dust, are hooked on the plurality of slit portions and prevented from being pulled upward. Therefore, it is possible to prevent the pet hair and human hair, such as dogs and cats contained in the dust, from returning to the spiral return space and entangled in the primary filter.

Further, in the dust collecting device of the present invention, the slit of the substantially cylindrical wall inside the umbrella-shaped extending portion is provided behind the dust collecting device. Thereby, it can be used without impairing the appearance in the state accommodated in the vacuum cleaner main body.

Further, in the dust collecting device of the present invention, the umbrella-shaped extending portion extending toward the dust accumulating space and the umbrella-shaped extending portion are formed of a transparent or translucent material. A roughly cylindrical wall on the inside. By this, it is possible to easily confirm the amount of dust accumulated in the internal dust accumulation space and the external dust accumulation space, which is stored in the interior of the umbrella dust accumulation space and the extension portion. Therefore, the user becomes easy to judge when the garbage is discarded.

An electric vacuum cleaner of the present invention is provided with an electric vacuum cleaner having the above-described dust collecting device. Thereby, an electric vacuum cleaner which is easy to use can be provided.

As described above, the dust collecting device of the present invention can prevent dust and pet hair stored in the dust accumulating space and human hair from returning to the cyclone space in the dust collecting device that collects dust according to the principle of cyclone separation. It can be applied to electric vacuum cleaners for home use or business use.

1‧‧‧ electric vacuum cleaner body

1a‧‧‧Inhalation

2‧‧‧Hose

3‧‧‧Connecting tube

4‧‧‧Extension tube

5‧‧‧Inhalation

6‧‧‧Electric blower

7‧‧‧dust collection device

8‧‧‧ dust box body

9‧‧‧ cover

10‧‧‧Hands

11‧‧‧ Cover

12‧‧‧Press lever

13‧‧‧ Department of Sales

14‧‧‧ claws

15‧‧‧ buckle

16‧‧‧Intake port

17‧‧‧ suction port

18‧‧‧ fasteners

19‧‧‧ Terminal

21‧‧‧One filter

22‧‧‧Extension

23‧‧‧Dust removal department

24‧‧‧Dust Removal Department

25‧‧ ‧Motor Department

26‧‧‧Seal

27‧‧‧Seal

29‧‧‧Packing

30‧‧‧Seal

31‧‧‧Cyclone Space

32‧‧‧Dust collection pathway

33‧‧‧Inner tube

34‧‧‧ switch

35‧‧ ‧ motor cover

36‧‧‧Motor housing

37‧‧‧ crankshaft

38‧‧‧ Connecting rod

39‧‧‧linear vibration components

40‧‧‧Motor

41‧‧‧ Track

42‧‧‧ Track Maintenance Department

43‧‧‧Axis

44‧‧‧Dust board

45‧‧‧ inner wall

46‧‧‧Outer casing

47‧‧‧Sliding parts

48‧‧‧ capacitor

49‧‧‧Circuit board

52‧‧‧Dust collection space

52a‧‧‧Internal dust accumulation space

52b‧‧‧External dust accumulation space

53‧‧‧ inclined section

54‧‧‧ outer wall

55‧‧‧ lining

56‧‧‧ Keeping ribs

57‧‧‧One filter installation frame

58‧‧‧Bevel

59‧‧‧Flange

60‧‧‧ wall

61‧‧‧Incision

L1‧‧‧Width

L2‧‧‧Width

R1‧‧‧ OD

R2‧‧‧Maximum outer diameter

R3‧‧‧ outside diameter

R4‧‧‧ inside diameter

Fig. 1 is an overall perspective view of an electric vacuum cleaner including a dust collecting device according to a first embodiment of the present invention.

Fig. 2 is a perspective view of the dust collecting device according to Embodiment 1 of the present invention as seen obliquely from the front.

Fig. 3 is a perspective view of the dust collecting device according to Embodiment 1 of the present invention as seen obliquely from the rear.

Fig. 4 is a perspective view showing the internal structure of the dust collecting device according to the first embodiment of the present invention.

Figure 5 is a cross-sectional view taken along line B-B of Figure 3.

Figure 6 is a cross-sectional view taken along line A-A of Figure 2.

Figure 7 is a cross-sectional view taken along line C-C of Figure 6.

21‧‧‧One filter

22‧‧‧Extension

23‧‧‧Dust removal department

25‧‧ ‧Motor Department

26‧‧‧Seal

27‧‧‧Seal

29‧‧‧Packing

30‧‧‧Seal

31‧‧‧Cyclone Space

32‧‧‧Dust collection pathway

33‧‧‧Inner tube

43‧‧‧Axis

44‧‧‧Dust board

52‧‧‧Dust collection space

52a‧‧‧Internal dust accumulation space

52b‧‧‧External dust accumulation space

53‧‧‧ inclined section

54‧‧‧ outer wall

55‧‧‧ lining

56‧‧‧ Keeping ribs

57‧‧‧One filter installation frame

58‧‧‧Bevel

59‧‧‧Flange

60‧‧‧ wall

61‧‧‧Incision

L1‧‧‧Width

L2‧‧‧Width

R1‧‧‧ OD

R2‧‧‧Maximum outer diameter

R3‧‧‧ outside diameter

R4‧‧‧ inside diameter

Claims (6)

A dust collecting device is disposed in a substantially cylindrical dust box body, and the substantially cylindrical primary filter is arranged in a concentric shape, and is formed between the inner surface of the dust box body and the outer surface of the primary filter. a cyclone space, and a dusty storage space of a substantially cylindrical shape is disposed below the whirlwind space, and an umbrella-shaped extension portion extending toward the dust accumulation space is provided at a lower portion of the primary filter, and is disposed substantially inside the extension portion The cylindrical wall and the lower end portion of the aforementioned wall are formed to protrude longer than the lower end portion of the aforementioned extension portion. A dust collecting device according to claim 1, wherein a slit is formed in a portion of the substantially cylindrical wall formed on the inner side of the umbrella-shaped extending portion. The dust collecting device of claim 2, wherein the plurality of umbrella-shaped slits of the substantially cylindrical inner wall of the inner side of the extending portion are formed. The dust collecting device of claim 2, wherein the slit of the substantially cylindrical wall of the inner side of the umbrella-shaped extending portion is provided behind the dust collecting device. A dust collecting device according to claim 1, wherein the transparent extending or translucent material forms an umbrella-shaped extending portion extending toward the dust accumulating space and a substantially cylindrical inner wall provided inside the extending portion. An electric vacuum cleaner is provided with the dust collecting device according to any one of claims 1 to 5.