KR20100063754A - Electric cleaner - Google Patents

Abstract

An electric cleaner has a cleaner body having a dust sucking opening. An electric fan and a dust separating case (12) are housed in the cleaner body (2). The dust separating case (12) has a separating chamber for separating, by means of centrifugal force, dust contained in air sucked from the dust sucking opening , and the dust separating case (12) also has a filter (31) for interconnecting the separating chamber and an air flow chamber (23). A dust collecting case (71) for collecting the separated dust is mounted to the dust separating case (12). Cleaners (51a, 51b) in contact with the filter (31) are mounted inside the separating chamber . The filter (31) and the cleaners (51a, 51b) are rotated relative to each other via a filter drive mechanism (41) in association with removal and mounting of the dust collecting case (71) to the dust separating case (12), and the rotation causes the cleaners (51a, 51b) to remove dust adhering to the filter (31).

Description

Electric Cleaner {ELECTRIC CLEANER}

The present invention relates to an electric vacuum cleaner having a dust separating case for separating dust contained in air by using a centrifugal force and a dust collecting case for collecting dust separated from the air in the dust separating case. More specifically, the present invention relates to a structure for removing dust attached to a filter accommodated in a dust separating case by using a removing operation and a mounting operation of a dust collecting case with respect to the dust separating case.

2. Description of the Related Art An electric vacuum cleaner has been conventionally known in which dust contained in air sucked by an electric blower is separated using an inertial force to eliminate a bag-shaped pack filter. An example of this kind of vacuum cleaner is disclosed, for example in Japanese Patent No. 3999791.

The electric vacuum cleaner disclosed in this patent publication is provided with the dust separation means which isolate | separates the dust in the air attracted by the electric blower, and the pleat filter which captures the dust which passed through the dust separation means. The pleated filter is disposed between the dust separating means and the electric blower.

The dust separating means includes a dust separating case and a dust collecting case. The dust separation case has an airflow inlet through which air is sucked in, a separation chamber communicating with the airflow inlet, and an airflow passage located downstream of the separation chamber along the flow direction of air. The separation chamber includes a cylindrical wall surface, and an intake cylinder is disposed at the center of the separation chamber surrounded by the wall surface. The intake cylinder has a plurality of vent holes. The airflow passage communicates with the inside of the intake cylinder along with the pleated filter. In addition, a dust outlet is formed at the upper end of the dust separation case. The dust outlet communicates with the separation chamber.

The dust collecting case is assembled to the dust separating case from above the dust separating case so as to be removed. The dust collecting case has a dust inlet and a ventilation window. The dust inlet is connected to the dust outlet of the dust separation case. The ventilation window is covered with a filter and connected to the airflow passage of the dust separation case through a communication port opened to the dust separation case.

In such a vacuum cleaner, when the electric blower starts to operate, air containing dust is sucked into the separation chamber from the airflow inlet. The air sucked into the separation chamber flows to turn along the wall surface. Because of this flow, centrifugal force is applied to the air, so that dust that is heavier than air is guided to the dust outlet through the wall surface by inertia.

On the other hand, a part of the air sucked into the separation chamber is filtered in the course of passing through the air vent of the intake cylinder, and is then led to the airflow passage through the inside of the intake cylinder. Therefore, in the process of passing the air sucked into the dust separation case through the separation chamber, the dust contained in the air is separated.

In the conventional vacuum cleaner, when air passes through the separation chamber, it is inevitable that fine dust adheres to the outer circumferential surface of the intake cylinder exposed to the separation chamber. As the dust adhering to the intake cylinder grows, the amount of air passing through the intake cylinder decreases.

In addition, the air guided together with the dust from the separation chamber to the dust collecting case flows into the airflow passage of the dust separating case through the air vent of the dust collecting case and the air vent of the dust separating case. Therefore, the air passing through the intake cylinder joins the air returned from the dust collecting case to the dust separation case at the airflow passage.

At this time, when the ventilation window of the dust collecting case is blocked by the dust collected inside the dust collecting case, the flow of air from the dust collecting case toward the air flow passage is greatly limited. Therefore, the air in the separation chamber is only sucked into the electric blower through the intake cylinder, and dust is more likely to adhere to the outer circumferential surface of the intake cylinder.

As a result, the intake cylinder becomes clogged and dust in the air cannot be separated efficiently in the separation chamber. However, the vacuum cleaner disclosed in the above-mentioned patent publication does not assume the removal of the dust adhering to the intake cylinder, and cannot deny that the suction force of the vacuum cleaner falls.

On the other hand, in this type of vacuum cleaner, if the vacuum cleaner has a sensor for detecting the amount or pressure of air sucked into the dust separation case, the amount or pressure of air sucked into the dust separation case is less than a predetermined level. Can be detected by the sensor. At the same time, it is possible to notify that cleaning of the intake cylinder is necessary based on the detection result of the sensor.

By the way, an operator using an electric vacuum cleaner inevitably disassembles the dust separation case at every notice and removes dust attached to the intake cylinder. Therefore, enormous effort and labor are required for the cleaning operation of the intake cylinder, and the improvement is demanded.

Japanese Patent No. 3999791

An object of the present invention is to obtain an electric vacuum cleaner which can easily remove dust adhered to a filter in a separation chamber by using a removal operation and a mounting operation of a dust collecting case, so that maintenance of the filter can be easily performed. .

In order to achieve the above object, the vacuum cleaner according to one embodiment of the present invention,

(1) a vacuum cleaner body having a suction port, (2) an electric blower housed in the vacuum cleaner body and sucking air from the vacuum suction port, and (3) air contained in the vacuum cleaner body and sucked in from the vacuum suction port A dust separation case having a separation chamber for separating dust contained therein by a centrifugal force, a ventilation chamber located downstream of the air flow direction than the separation chamber, and (4) the dust separation case is detachably attached to the dust separation case, And a dust collecting case for collecting the dust separated in the separating chamber, and (5) a filter having a breathability provided in the dust separating case so as to communicate between the separating chamber and the vent chamber.

In the separation chamber, cleaning means for removing dust adhered to the filter by contacting the filter is provided. The filter and the cleaning means are relatively rotated through the drive means to interlock with the removal operation and the mounting operation of the dust collecting case with respect to the dust separation case. By this rotation, dust adhering to the filter is removed by the cleaning means.

According to the present invention, the dust attached to the filter can be automatically removed by using the removing operation and the mounting operation of the dust collecting case. Therefore, the troublesome work of disassembling the dust separation case and cleaning the filter by artificial work is unnecessary, and the maintenance of the filter becomes easy.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view of the vacuum cleaner which shows the state which isolate | separated the cleaner body, the dust separation case, and the dust collecting case from each other in 1st Embodiment of this invention.
2 is a perspective view illustrating a state in which the dust separation case and the dust collecting case are separated from each other in the first aspect of the present invention.
3 is a cross-sectional view showing a state in which a dust collecting case is attached to a dust separation case in the first embodiment of the present invention.
4 is a cross-sectional view taken along the line F4-F4 in FIG. 3.
5 is a cross-sectional view taken along the line F5-F5 of FIG. 3.
FIG. 6 is a cross-sectional view showing a state where the dust collecting case is pushed up from the dust separating case in the first embodiment of the present invention along the F5-F5 line in FIG.
FIG. 7 is a cross-sectional view illustrating a state where the dust collecting case is separated from the dust separating case in the first embodiment of the present invention along the F7-F7 line in FIG. 3. FIG.
8 is a cross-sectional view showing a state in which the dust collecting case is attached to the dust separation case in the second embodiment of the present invention.
9 is a cross-sectional view taken along the line F9-F9 in FIG. 8.
10 is a cross-sectional view showing a state in which the dust collecting case is attached to the dust separating case in the third embodiment of the present invention.

EMBODIMENT OF THE INVENTION Hereinafter, 1st Embodiment of this invention is described based on FIG.

1 shows, for example, an electric cleaner 1 that can move along a floor to be cleaned. The vacuum cleaner 1 is equipped with the cleaner main body 2, the dust separation unit 11, and the well-known suction unit which is not shown in figure. The suction unit includes a suction head having a suction port, a suction hose, and an extension tube. The extension pipe connects between the suction head and the suction hose.

The vacuum cleaner main body 2 has a pair of wheels 3 (only one side) which contact | connects a floor surface, the caster which is not shown in figure, and the unit storage chamber 2a. The unit storage chamber 2a is opened toward the upper side of the cleaner body 2. The upper cover 4 is supported by the cleaner main body 2. The upper lid 4 is rotatable between a closed position that covers the unit storage chamber 2a from above and an open position that retracts to the rear of the unit storage chamber 2a and opens the unit storage chamber 2a.

As shown in FIG. 1, the suction port 5 is formed in the wall of the front end of the cleaner body 2. The suction port 5 is for connecting the said suction hose, and is connected to the unit storage chamber 2a.

The electric blower 6 shown in FIG. 7 is accommodated in the rear part of the vacuum cleaner main body 2. As shown in FIG. The electric blower 6 has a suction port 6a for sucking air. The suction port 6a is located behind the unit storage chamber 2a and is opened toward the unit storage chamber 2a. The air discharged from the electric blower 6 is discharged to the outside of the cleaner body 2 from an exhaust port (not shown) opened at the rear end of the cleaner body 2.

Moreover, the cleaner main body 2 is equipped with the sensor which detects the pressure of the air sucked into the electric blower 6, and the display member which notifies dust clogging. In the present embodiment, when the sensor detects that the state in which the pressure of the air sucked into the electric blower 6 is lower than the predetermined value continues for a predetermined time, the display device is operated in consideration of dust clogging. .

As shown in FIG. 1, the dust separation unit 11 is accommodated in the unit accommodation chamber 2a of the vacuum cleaner main body 2 so that removal is possible. The dust separation unit 11 includes the dust separation case 12, the filter 31, the filter drive mechanism 41, the first and second cleaning tools 51a and 51b, the holding means 61, and the release means 65. ) And a dust collecting case 71.

As shown in FIG.2 and FIG.3, the dust separation case 12 has the case main body 12a and the filter case 12b. While the filter case 12b forms a substantially cylindrical shape, it is provided continuously in the back part of the case main body 12a. As shown in FIG. 3, FIG. 4, and FIG. 7, the case main body 12a has the airflow inlet 13, the airflow outlet 14, the separation chamber 15, the dust outlet 19, and the 1st ventilation chamber ( 22) and a second ventilation chamber 23 are provided.

The airflow inlet 13 is opened in the front wall of the case main body 12a. The airflow inlet 13 is connected to the rear end of the suction port 5 of the cleaner main body 2 when the dust separation unit 11 is accommodated in the unit accommodating chamber 2a.

The airflow outlet 14 is open to the rear wall of the case main body 12a and communicates with the inside of the filter case 12b. The airflow outlet 14 is located downstream from the airflow inlet 13 on the basis of the flow direction of the air inside the case body 12a.

The filter case 12b accommodates the pleated filter 69 as shown in FIG. The pleated filter 69 is located between the suction port 6a of the electric blower 6 and the airflow outlet 14. The filter case 12b has an outlet (not shown) located downstream from the pleated filter 69. The outlet of the filter case 12b is connected to the suction port 6a of the electric blower 6.

As shown to FIG. 3 and FIG. 4, the case main body 12a is equipped with the 1st side wall 16 and the guide wall 17 which protrudes to the side from the 1st side wall 16. As shown in FIG. The guide wall 17 forms a substantially cylindrical shape and has an opening 17a facing the first side wall 16. The opening 17a of the guide wall 17 is closed by a removable cover 18. The first side wall 16, the guide wall 17, and the cover 18 cooperate with each other to define the separation chamber 15 inside the case main body 12a. The first side wall 16 is located inside the separation chamber 15 along with the lid 18.

As best shown in FIG. 4, an inlet 20 is formed in the first sidewall 16 that opens into the separation chamber 15. The inlet 20 is located in the rear part of the case main body 12a when the separation chamber 15 is seen from the direction of the cover 18, and is shifted back from the center part of the separation chamber 15.

The dust outlet 19 is formed in the upper end part of the case main body 12a. The dust outlet 19 is opened toward the upper part of the case main body 12a and is connected to the separation chamber 15. In addition, the dust outlet 19 is located in the front part of the case main body 12a when the separation chamber 15 is seen from the direction of the cover 18, as shown in FIG. It is located at the top of 15). The annular sealing member 21 which can elastically deform is provided in the upper end of the case main body 12a. The sealing material 21 surrounds the dust outlet 19 so as to seal the dust outlet 19.

As shown to FIG. 3 and FIG. 7, the 1st ventilation chamber 22 is formed in the case main body 12a so that the airflow inlet 13 and the inlet 20 of the separation chamber 15 may be connected. The first ventilating chamber 22 extends in the front-rear direction of the case main body 12a at approximately the same height position as the upper part of the separation chamber 15. The front end part of the 1st ventilation chamber 22 is continuous with the airflow inlet 13. As shown in FIG. 7, the rear part of the 1st ventilation chamber 22 is bent so that the air which passes through the 1st ventilation chamber 22 may be bent obliquely downward with respect to the inlet 20. As shown in FIG. In connection with this, the bottom wall of the rear part of the 1st ventilation chamber 22 inclines so that it may become low gradually as it progresses to the direction of the separation chamber 15.

As best shown in FIG. 4, the inlet 20 opening into the separation chamber 15 has first through fourth opening circumferences 20a, 20b, 20c, and 20d. The first opening circumferential portion 20a coincides with the lowest position among the bottom walls of the first ventilating chamber 22. The second opening circumference 20b is located above the first opening circumference 20a so as to be closer to the air flow inlet 13 than the first opening circumference 20a. In addition, the second opening circumferential portion 20b is shifted to the rear of the separation chamber 15 from the dust outlet 19. The third opening circumference 20c connects between one end of the first opening circumference 20a and one end of the second opening circumference 20b and has an arc shape so as to follow the guide wall 17. Is curved. The fourth opening perimeter 20d is curved in an arc shape so as to connect between the other end of the first opening perimeter 20a and the other end of the second opening perimeter 20b. The 4th opening circumference 20d is facing the 3rd opening circumference 20c. Therefore, the 2nd opening circumference 20b of the inlet 20 is located in the upstream edge part along the flow direction of the air which flows into the separation chamber 15 from the inlet 20.

As shown in FIG. 3 and FIG. 7, the second ventilation chamber 23 is located below the first ventilation chamber 22. The 1st ventilation chamber 22 and the 2nd ventilation chamber 23 are partitioned off by the partition 24 which the case main body 12a has. The separation chamber 15, the first ventilation chamber 22, and the second ventilation chamber 23 cooperate with each other to form a passage communicating between the airflow inlet 13 and the airflow outlet 14. In other words, the separation chamber 15 is located between the airflow inlet 13 and the airflow outlet 14.

As shown in FIG. 3, the case main body 12a has a second side wall 25. The second side wall 25 is parallel to the first side wall 16 and is located on the side opposite to the separation chamber 15 with respect to the first side wall 16. The second side wall 25 cooperates with the partition wall 24 to define the second ventilation chamber 23. The vent 26 is formed in the second side wall 25. The vent 26 is opened in the second vent chamber 23. On the outer surface of the second side wall 25, an annular sealing material 27 capable of elastic deformation is provided. The sealing material 27 surrounds the air vent 26 to seal the air vent 26.

As shown to FIG. 3 and FIG. 4, the said filter 31 is equipped with the filter frame 31a and the filter member 31b made of synthetic resin. In order to ensure sufficient filtration area of the filter 31, the filter frame 31a has comprised the hollow cylinder shape similar to a cone as a preferable example. The filter frame 31a has a large diameter part at one end along the axial direction. The base part 31c is integrally formed in the large diameter part of the filter frame 31a. The base part 31c is formed in the hollow cylindrical shape coaxial with the filter frame 31a.

The filter member 31b is made of, for example, a synthetic resin material formed in a mesh shape or a metal material such as stainless steel having a large number of small holes, and has air permeability. The filter member 31b is fixed to the outer circumferential surface of the filter frame 31 by means of adhesion or the like. Therefore, the filter member 31b has the conical exterior shape which covers the filter frame 31a.

When the filter member 31b is made of stainless steel, durability becomes higher in comparison with the case where the filter member 31b is made of synthetic resin. In addition, dust is difficult to adhere to the filter member 31b, and even if dust adheres to the filter member 31b, there is an advantage in that dust is likely to peel off from the filter member 31b.

As shown in FIG. 3, the filter 31 is rotatably supported by the case main body 12a so that it may be located in the center part of the separation chamber 15. As shown in FIG. In detail, the support wall 32 is provided in the case main body 12a. The support wall 32 forms the drive chamber 35 between the 1st side wall 16 with the 1st side wall 16 facing the 1st side wall 16 on the opposite side to the separation chamber 15. The drive chamber 35 is partitioned from the separation chamber 15 by the first side wall 16. Similarly, the drive chamber 35 is partitioned into the first and second vent chambers 22 and 23 by the support wall 32. In addition, the drive chamber 35 is formed so as not to disturb the flow of air from the first vent chamber 22 toward the separation chamber 15.

The base portion 31c of the filter frame 31a extends between the first side wall 16 and the support wall 32. The base portion 31c penetrates through the drive chamber 35 and is opened in the second vent chamber 23. The 1st side wall 16 and the support wall 32 have the filter support part 33, respectively. The filter support part 33 rotatably supports the base part 31c by surrounding the base part 31c of the filter frame 31a from the outside.

The O-ring 34 is fixed to each filter support part 33. The O-ring 34 is in contact with the outer circumferential surface of the base portion 31c to allow rotation of the filter 31. The O-ring 34 interrupts communication between the drive chamber 35 and the separation chamber 15, and blocks communication between the drive chamber 35 and the second vent chamber 23.

As shown in FIG. 3, the filter frame 31 a covered with the filter member 31 b protrudes from the first side wall 16 toward the center of the separation chamber 15. The filter frame 31a is reduced in diameter as it travels from the first side wall 16 in the direction of the lid 18. Therefore, the tip portion facing the lid 18 of the filter frame 31a is the smallest in the filter frame 31a.

Since the base part 31c of the filter frame 31a is opened in the 2nd ventilation chamber 23, the separation chamber 15 and the 2nd ventilation chamber 23 communicate with each other through the filter 31. As shown in FIG. . In other words, the inside of the filter 31 can be regarded as an upstream portion of the second vent chamber 23. Therefore, the filter member 31b of the filter 31 is located at the boundary between the separation chamber 15 and the second ventilation chamber 23.

As shown in FIG. 5 and FIG. 6, the recessed part 36 is formed in the upper end part of the case main body 12a of the dust separation case 12. As shown in FIG. The recessed part 36 is open toward the upper part of the case main body 12a. The bottom wall 32a of the recessed part 36 is formed as part of the support wall 32 which defines the drive chamber 35.

As shown in FIG. 3, FIG. 5, and FIG. 6, the said filter drive mechanism 41 has the lifting rod 42, the compression coil spring 43, and the gear 44. As shown in FIG. The elevating rod 42 penetrates through each hole 32b formed in the bottom wall 32a of the recessed part 36. Therefore, the free rotation of the lifting rod 42 around the axis is limited by each hole 32b. The disk-shaped head 42a is formed in the upper end of the lifting rod 42. The head 42a has a larger diameter than the lifting rod 42. The lower part of the elevating rod 42 is inserted in the drive chamber 35. The rack 45 is formed in the side surface of the lifting rod 42 located in the drive chamber 35. The rack 45 linearly follows the lifting movement of the lifting rod 42.

The compression coil spring 43 spans between the bottom wall 32a of the recessed part 36 and the head 42a of the lifting rod 42 to push up the lifting rod 42. As a result, in the state where the lifting rod 42 is free, the head 42a of the upper end of the lifting rod 42 protrudes upward from the upper surface of the case body 12a.

The gear 44 is integrally formed on the outer circumferential surface of the base portion 31c of the filter frame 31a. The gear 44 is coaxial with the base portion 31c and meshes with the rack 45 in the drive chamber 35. By this engagement, when the lifting rod 42 moves up and down, the gear 44 and the rack 45 convert the linear movement of the lifting rod 42 into a rotational movement and transmit it to the filter 31. .

Specifically, when the lifting rod 42 is pushed down in response to the pressing force of the compression coil spring 43, as shown by the arrow in Fig. 5, the filter 31 rotates in the first direction. The first direction corresponds to the clockwise direction. On the contrary, when the lifting rod 42 is pushed up by the compression coil spring 43, as shown by the arrow in FIG. 6, the filter 31 rotates in a 2nd direction. The second direction is a direction opposite to the first direction and corresponds to the counterclockwise direction. It is preferable that the filter 31 rotates more than one rotation, but the rotation speed of the filter 31 may be less than one rotation.

The said 1st and 2nd cleaning tools 51a and 51b are an example of a cleaning means. 3 and 4, the first and second cleaning tools 51a and 51b are fixed to the first side wall 16 of the case body 12a and are exposed to the separation chamber 15. . The 1st cleaning tool 51a is located above the filter 31, and is adjacent to the 2nd opening peripheral part 20b of the inlet 20 opened to the separation chamber 15. As shown in FIG. The 2nd cleaning tool 51b is arrange | positioned below the filter 31 spaced 180 degrees in the circumferential direction of the filter 31 with respect to the 1st cleaning tool 51a. Therefore, the 1st cleaning tool 51a and the 2nd cleaning tool 51b face each other in the radial direction of the filter 31. As shown in FIG.

The 1st and 2nd cleaning tools 51a and 51b have the base 52 and the filter contact member 53, respectively. The base 52 is formed of a synthetic resin material, for example. The base 52 has a plate shape extending in the axial direction of the filter frame 31a, and one end along the longitudinal direction is fixed to the first side wall 16.

The base 52 also has a circumferential portion 52a facing the guide wall 17 of the separation chamber 15. The circumferential portion 52a extends in the axial direction of the filter frame 31a. At the same time, the circumferential portion 52a is pointed in a triangular shape so as to reduce its width as it travels outward along the radial direction of the filter frame 31a. As a result, it can suppress that the periphery part 52a of the base 52 disturbs the flow of air which passes through the separation chamber 15.

The filter contact member 53 is for removing the dust adhering to the outer peripheral surface of the filter member 31b by contacting the outer peripheral surface of the filter member 31b. The filter contact member 53 is made of a soft material such as, for example, a brush in which a plurality of hairs are bundled or a cloth. The soft filter contact member 53 deforms to follow the outer circumferential surface of the filter member 31b when the filter 31 is rotated. Therefore, the soft filter contact member 53 can remove the dust adhering to the outer peripheral surface of the filter member 31b without damaging the filter member 31b.

In particular, when a brush is used as the filter contact member 53, the tip of the hair of the brush is drawn into the mesh of the filter member 31b. Therefore, a brush is preferable at the point which can remove reliably the dust adhering to the filter member 31b.

As shown in FIG.2 and FIG.3, the said dust collection case 71 is attached to the case main body 12a of the dust separation case 12 so that removal is possible from above. The dust collecting case 71 is provided with the upper case 72 and the side case 73. The upper case 72 is mounted on the case main body 12a so as to cover the upper surface of the case main body 12a. The upper case 72 has a handle 71a that is gripped by hand when the dust collecting case 71 is removed from the dust separation case 12.

The side case 73 extends downward from one end of the upper case 72 and covers the second side wall 25 of the case main body 12a from the side. The side case 73 has a side cover 73b. The side cover 73b is rotatable between the closed position and the open position with its upper end as a support point. In the closed position, the side cover 73b stands up along the side case 73 and seals the inside of the side case 73. In the open position, the side cover 73b is separated from the side case 73 so that dust collected in the side case 73 can be discarded.

As shown in FIG. 3, the upper case 72 has the lower wall 72a facing the upper surface of the case main body 12a. The dust inlet 74 is formed in the lower wall 72a. The dust inlet 74 is located at the end of the upper case 72 on the side opposite to the side case 73. The dust inlet 74 coincides with the dust outlet 19 of the case body 12a when the dust collecting case 71 is attached to the case body 12a of the dust separation case 12. The connecting portion between the dust outlet 19 and the dust inlet 74 is sealed by the sealing material 21.

As shown in FIG. 7, the hook 75 and the convex part 76 are integrally formed in the lower wall 72a of the upper case 72. As shown in FIG. The hook 75 protrudes downward from the lower wall 72a. Similarly, the convex portion 76 is adjacent to the hook 75 while forming a plate shape projecting downward from the lower wall 72a.

As shown in FIG. 3, the side case 73 has an inner wall 73a facing the second side wall 25 of the case body 12a. A vent hole 77 is formed in the inner wall 73a. The vent hole 77 is covered with a net filter 78. The vent hole 77 coincides with the vent hole 26 of the second side wall 25 when the dust collecting case 71 is attached to the case main body 12a of the dust separation case 12. The connecting portion between the vent hole 77 and the vent hole 26 is sealed by the sealing material 27.

The holding means 61 is for holding the dust collecting case 71 attached to the dust separating case 12, and is assembled to the upper portion of the case main body 12a. As shown in FIG.2 and FIG.7, the holding means 61 has the hook base part 62. As shown in FIG. The hook base part 62 protrudes upward from the upper surface of the case main body 12a. As shown by the arrow in FIG. 7, the hook base part 62 is movable in the front-back direction of the case main body 12a between an engagement position and an engagement release position. In the engaged position, the hook base 62 is engaged with the hook 75 of the dust collecting case 71. In the disengagement position, the hook base 62 detaches from the hook 75. The hook base part 62 is pressed forward of the case main body 12a by the spring which is not shown in figure, and is hold | maintained at the said engagement position.

The said release means 65 is for removing the dust collecting case 71 from the dust separation case 12, and is assembled in the upper part of the case main body 12a. As shown in FIG.2 and FIG.7, the release means 65 is equipped with the slide plate 65a. The slide plate 65a is supported by the upper part of the case main body 12a so that it can slide linearly in the front-back direction of the case main body 12a. The slide range of the slide plate 65a is defined by a restriction unit (not shown).

The front end of the slide plate 65a protrudes forward from the front wall of the case main body 12a directly above the airflow inlet 13. The rear end of the slide plate 65a is in contact with the front end of the hook support 62 so as not to interfere with the engagement and disengagement of the hook support 62 and the hook 75. Therefore, the slide plate 65a is always pressed toward the front by the spring which the said holding means 61 has.

As shown in FIG. 1, the operation piece 66 is rotatably supported on the wall of the front end of the cleaner body 2. The operation piece 66 is an example of an operation unit for artificially operating the release means 65. The operation piece 66 is located directly above the suction port 5 and is in contact with the front end of the slide plate 65a. When the operation piece 66 is pressed with the fingertip of the hand, the slide plate 65a slides toward the rear hook support 62 against the pressing force of the spring. As a result, the hook base portion 62 is forcibly moved from the engaged position to the disengagement position, thereby releasing the engagement of the hook base portion 62 and the hook 75.

As shown in FIG. 2, the case main body 12a is equipped with the guide part 67. As shown in FIG. The guide part 67 protrudes toward the upper direction of the case main body 12a. The groove 67a is formed in the guide portion 67. In the groove 67a, the convex portion 76 of the dust collecting case 71 is inserted from above, and is open to the upper end surface and the side surface of the guide portion 67.

In addition, a supporting plate and a pop-up spring (both not shown) are housed in the groove 67a. The supporting plate is for supporting the distal end of the convex portion 76 and is supported by the guide portion 67 so as to be able to move up and down along the groove 67a. The pop-up spring always pushes up the support plate.

The dust collecting case 71 can be attached to the dust separating case 12 by the following procedure. First, the upper case 72 of the dust collecting case 71 is opposed to the case body 12a from above, and the front end portion of the convex portion 76 of the upper case 72 and the groove 67a of the guide portion 67. Align the top of the

In this state, the dust collecting case 71 is lowered toward the case main body 12a, and the convex portion 76 is inserted into the groove 67a. The dust inlet 74 of the dust collecting case 71 is connected to the dust outlet 19 of the case body 12a with the drop of the dust collecting case 71, and the ventilation hole 77 of the dust collecting case 71 is closed. It is connected to the vent 26 of the case main body 12a. In addition, the hook 75 of the dust collecting case 71 is coupled to the hook support 62. By this coupling, the dust collecting case 71 is held at a predetermined position on the upper surface of the case main body 12a.

When the dust collecting case 71 is lowered toward the case main body 12a, the distal end of the convex portion 76 collides with the supporting plate inside the groove 67a. As a result, the support plate is pushed down in response to the pressing force of the pop-up spring. At the same time, the lower wall 72a of the upper case 72 of the dust collecting case 71 collides with the head 42a of the lifting rod 42 protruding from the case body 12a. For this reason, the lifting rod 42 is pushed down in response to the pressing force of the compression coil spring 43.

Therefore, in a state where the dust collecting case 71 is held in the dust separating case 12 through the hook 75 and the hook support 62, the dust collecting case 71 is formed by the pop-up spring and the compression coil spring 43. It is pressurized upward. As a result, in the state where the hook 75 of the dust collecting case 71 couple | bonded with the hook base part 62, the hook 75 is always pressed in the direction which keeps engagement with the hook base part 62. As shown in FIG.

On the other hand, in order to remove the dust collecting case 71 from the dust separation case 12, the operation piece 66 of the cleaner main body 2 is pressed by the fingertip of a hand. By this pressurization, the slide plate 65a slides toward the hook support part 62, and moves the hook support part 62 from an engagement position toward an engagement release position. As a result, the hook base portion 62 is detached from the hook 75, and the holding of the dust collecting case 71 relative to the dust separation case 12 is released.

When the hook support 62 is released from the hook 75, the dust collecting case 71 is pushed up by the popup spring and the compression coil spring 43, and protrudes onto the dust separating case 12. Therefore, the dust collecting case 71 can be removed from the dust separation case 12 by a worker holding up the handle 71a of the dust collecting case 71 by hand.

Next, the operation of the vacuum cleaner 1 will be described.

When the electric blower 6 starts to operate, air in the dust separation case 12 is sucked through the pleated filter 69 to separate the separation chamber 15, the first ventilation chamber 22, and the second ventilation chamber 23. ) Becomes negative pressure. Due to this, for example, dust on the floor to be cleaned is sucked from the suction head together with the air. The air containing dust passes through the suction port 5, the airflow inlet 13, and the first ventilating chamber 22, and is sucked into the separation chamber 15 from the inlet 20.

The air sucked into the separation chamber 15 flows so as to pivot along the cylindrical guide wall 17. As a result, the centrifugal force acts on the dust contained in the air. As a result, large mass of coarse dust is attracted to the guide wall 17 and moves to the dust outlet 19 along the inner circumferential surface of the guide wall 17. Large dust is introduced into the upper case 73 of the dust collecting case 71 through the dust inlet 74 from the dust outlet 19 together with the air.

On the other hand, a part of the fine dust and air in the separation chamber 15 passes through the filter member 31b at the center of the separation chamber 15 and then through the base portion 31c of the filter frame 31a. It is sucked into the air chamber 23. For this reason, the dust with a large mass in the separation chamber 15 is removed from air.

The air containing the large dust which flowed into the upper case 72 of the dust collecting case 17 reaches the side case 73 as a dust storage part. In addition, while the air in the side case 73 is sucked into the 2nd ventilation chamber 23 from the ventilation hole 26 through the net-shaped filter 78, the filter member 31b in the 2nd ventilation chamber 23 is carried out. Join with the air passing through). The large amount of dust guided into the side case 73 is picked up by the net-shaped filter 78 and stays inside the side case 73. Accordingly, air from which dust having a large mass is removed is sucked into the second vent chamber 23 of the dust separation case 12 from the dust collecting case 71.

The air sucked into the second vent chamber 23 through the filter 31 and the air sucked into the second vent chamber 23 via the side case 73 are mutually separated in the second vent chamber 23. Together with the joining, it is sucked into the filter case 12b through the airflow outlet 14. In addition, the air sucked into the filter case 12b exits the pleated filter 69. As a result, the fine dust which has left the filter 31 and the dust collecting case 71 is captured by the pleated filter 69.

The air filtered by the pleated filter 69 is sucked into the suction port 6a of the electric blower 6 from the outlet of the filter case 12b. The air sucked into the suction port 6a passes through the inside of the electric blower 6 and is discharged to the outside of the vacuum cleaner 1 from the exhaust port of the rear end of the vacuum cleaner main body 2.

When the electric current value input to the electric blower 6 is set low and the operation mode of the vacuum cleaner 1 is weak, the flow velocity of the air which passes through the separation chamber 15 is slowing. Therefore, dust may adhere to the outer peripheral surface of the filter member 31b of the filter 31. At this time, when the operation mode of the vacuum cleaner 1 is changed from weak to strong, and the current value input to the electric blower 6 is increased, the separation chamber 15 increases as the negative pressure acting on the separation chamber 15 increases. The flow rate of air passing through) increases.

As a result, the dust adhering to the outer circumferential surface of the filter member 31b is blown by the pressure of the air passing through the separation chamber 15, and guided from the dust outlet 19 to the dust collecting case 71. However, since the dust removal action is not certain, there is a possibility that dust adhered to the outer circumferential surface of the filter member 31b may grow with the passage of the use time of the vacuum cleaner 1.

In addition, when the inside of the dust collecting case 71 is gradually filled with dust, the dust collected in the dust collecting case 71 becomes a resistance, and the flow of air in the dust collecting case 71 is disturbed. For this reason, the amount of air sucked into the 2nd ventilation chamber 23 from the dust collecting case 71 becomes small. In connection with this, the amount of air sucked into the 2nd ventilation chamber 23 through the filter 31 from the separation chamber 15 increases. As a result, dust tends to adhere to the outer circumferential surface of the filter member 31b of the filter 31 gradually, and it cannot be denied that the filter member 31b is clogged. Therefore, since the amount of air sucked into the electric blower 6 decreases, the display device for notifying dust clogging may operate.

When the display device is operated, the worker using the vacuum cleaner 1 opens the upper cover 4 to expose the dust separation unit 11. Next, the dust collecting case 71 is removed from the dust separating case 12 and the side cover 73b is opened to remove dust in the dust collecting case 71.

After the dust in the dust collecting case 71 has been discarded, the worker performs the operation of attaching the dust collecting case 71 to the dust separating case 12. According to the present embodiment, the filter is removed using the first and second cleaning tools 51a and 51b during the removal work of the dust collecting case 71 and the mounting work of the dust collecting case 71 which are inevitably performed at the time of dust disposal. The dust adhering to the member 31b can be removed automatically.

Specifically, when the operation piece 66 of the cleaner body 2 is pressed with the fingertip of the hand to slide the slide plate 65a toward the hook support 62, the hook support 62 is hooked ( 75) As a result, the holding of the dust collecting case 71 relative to the dust separating case 12 is released. With this, the dust collecting case 71 receives the pressing force of the pop-up spring and the compression coil spring 43, and shifts from the holding state shown in FIG. 5 to the pushing up state shown in FIG. The dashed-dotted line in FIG. 3 and FIG. 4 shows a state where the dust collecting case 71 is pushed up from the dust separating case 12.

When the dust collecting case 71 is pushed up from the dust separating case 12, the lifting rod 42 rises linearly as shown in FIG. The linear motion of the lifting rod 42 is converted to the rotational motion by engaging the rack 45 and the gear 44. As a result, the filter 31 is rotated along with the gear 44 in the second direction.

In other words, the filter 31 and the first and second cleaning tools 51a and 51b rotate relative to the lifting operation of the lifting rod 42 that pushes up the dust collecting case 71. As a result, while the filter contact member 53 of the 1st and 2nd cleaning tools 51a and 51b contacts the outer peripheral surface of the filter member 31b, it moves along this outer peripheral surface. Therefore, the dust adhering to the outer peripheral surface of the filter member 31b is removed by the filter contact member 53. The removed dust collects on the side surface of the filter contact member 53.

On the other hand, when attaching the dust collecting case 71 to the dust separating case 12, the lifting rod 42 is linearly pushed down by the dust collecting case 71 as shown in FIG. The linear motion of the lifting rod 42 is converted to rotational motion by the engagement of the rack 45 and the gear 44 and transmitted to the filter 31. Thereby, the filter 31 is rotated in the 1st direction opposite to the case where the dust collecting case 71 is removed. Therefore, the outer peripheral surface of the filter member 31b is again cleaned by the filter contact member 53 of the first and second cleaning tools 51a and 51b.

Thus, with the removal operation | movement and installation operation | movement of the dust collection case 71 with respect to the dust separation case 12, the dust adhering to the outer peripheral surface of the filter member 31b can be removed automatically.

The dust removed from the outer circumferential surface of the filter member 31b and collected on the side of the filter contact member 53 forms agglomerates and falls from the outer circumferential surface of the filter member 31b to the bottom of the separation chamber 13. In addition, even if the dust removed from the filter member 31b does not fall from the filter member 31b, since the dust is collected together on the side of the filter contact member 53, the pressure of the air passing through the separation chamber 15 is reduced. It is kept easy to receive.

After attaching the dust collecting case 71 to the dust separating case 12, when the electric blower 6 resumes operation, the dust or filter contact member dropped from the filter member 31b to the bottom of the separating chamber 15. The dust collected on the side surface of 53 is transported from the dust outlet 19 to the dust collecting case 71 by the flow of air passing through the separation chamber 15.

According to the present embodiment, the filter frame 31a to which the filter member 31b is fixed has a conical shape whose diameter decreases as it travels from the first side wall 16 in the direction of the lid 18. Thereby, the outer peripheral surface of the filter member 31b is inclined with respect to the axis line of the filter frame 31a. Therefore, when the filter contact member 53 removes the dust of the outer peripheral surface of the filter member 31b, the removed dust will be easy to move with the inclination of the outer peripheral surface of the filter member 31b.

In particular, at the upper part of the filter member 31b, the removed dust collects at the tip part which is a small diameter of the filter frame 31a. Therefore, the dust removed from the outer circumferential surface of the filter member 31b becomes agglomerates at the bottom of the separation chamber 15, and is easy to fall.

In addition, air flowing through the first ventilating chamber 22 is sucked into the separation chamber 15 from the inlet 20 opened to the first side wall 16. Therefore, the mainstream of the air passing through the separation chamber 15 toward the dust outlet 19 concentrates and passes near the cover 18 rather than the first side wall 16. Since the tip of the small diameter of the filter frame 31a is adjacent to the lid 18, the dust collected at the tip of the small diameter of the filter frame 31a is reliably transported into the dust collecting case 71 by using the flow of air. I can go.

In view of the foregoing, according to the vacuum cleaner 1 according to the present embodiment, the filter 31 inside the separation chamber 15 using the removal operation and the mounting operation of the dust collection case 71 with respect to the dust separation case 12. The dust attached to) can be removed automatically. For this reason, after removing the dust separation unit 11 from the cleaner main body 2, the operation | work which exposes the filter 31 in the separation chamber 15 by removing the cover 18 from the case main body 12a, and a separation chamber Hand work is removed from the opening 17a by the inside of 15 to remove dust attached to the outer circumferential surface of the filter member 31b by hand. Therefore, no labor is required for the cleaning work of the filter 31, and maintenance of the filter 31 can be performed easily.

According to this embodiment, when a brush is used as the filter contact member 53, the dust removed from the outer peripheral surface of the filter member 31b may be entangled with the hair of the brush. By the way, when the dust collecting case 71 is attached to the dust separation case 12, the filter 31 rotates in the opposite direction to the case where the dust collection case 71 is removed from the dust separation case 12. As shown in FIG. For this reason, with the inversion of the filter 31, the dust adhering to the hair of a brush becomes easy to peel off from a brush.

With it, the brush is directly exposed to the flow of air through the separation chamber 15, so that most of the dust attached to the hair of the brush is blown off under the pressure of the air passing through the separation chamber 15. As a result, it is possible to prevent dust from adhering to the hair of the brush or to grow dust adhering to the brush.

This invention is not specific to 1st embodiment, It can variously deform and implement within the range which does not deviate from the meaning of invention.

8 and 9 disclose a second embodiment of the present invention. The second embodiment differs from the first embodiment in that the filter 31 is cleaned by using one cleaning tool 51. The structure of the dust separation case 12 other than this is the same as that of the said 1st Embodiment. Therefore, in 2nd Embodiment, the same code | symbol is attached | subjected to the component same as 1st Embodiment, and the description is abbreviate | omitted.

As shown in FIG. 8 and FIG. 9, the cleaning tool 51 is located above the filter 31 and has a second opening circumferential portion 20b of the inlet 20 opened to the separation chamber 15. Adjacent. The filter contact member 53 of the cleaning tool 51 is in contact with the outer circumferential surface of the filter member 31b from above the filter 31.

Moreover, in cleaning the outer peripheral surface of the conical filter member 31 with one cleaning tool 51, the number of teeth of the gear 44 and the rack 45 is set so that the filter 31 may be rotated at least 1 time. It is desirable to.

According to the second embodiment, when the dust collecting case 71 is removed from the dust separating case 12 or the dust collecting case 71 is attached to the dust separating case 12, the filter 31 rotates in the circumferential direction. Therefore, the dust adhering to the outer peripheral surface of the filter member 31b can be removed by the filter contact member 53.

As a result, the cleaning operation | movement of the filter 31 can be performed easily using the removal operation | movement and installation operation | movement of the dust collecting case 71. FIG. Therefore, similarly to the first embodiment, the filter 31 in the separation chamber 15 is exposed, and the work of removing dust adhered to the outer circumferential surface of the filter member 31b by hand can be omitted, and thus the filter ( 31) maintenance becomes easy.

Moreover, according to the said structure, since the one cleaning tool 51 is arrange | positioned so that it may be adjacent to the 2nd opening circumference 20b of the inlet 20 opened to the separation chamber 15, the cleaning tool 51 will be provided. It can prevent the adverse effect on the separation function of dust.

That is, the mainstream of air passing through the separation chamber 15 from the inlet 20 toward the dust outlet 19 flows along the guide wall 17 as if bypassing the cleaning tool 55. Therefore, despite the cleaning tool 51 protruding toward the radially outer side of the filter 31, it is possible to suppress the occurrence of confusion in the flow of air passing through the separation chamber 15 by the cleaning tool 51. Can be. As a result, the flow velocity of the air passing through the separation chamber 15 is less likely to decrease, and dust contained in the air can be efficiently separated in the separation chamber 15.

In addition, the filter 31 rotates at least once when the dust collecting case 71 is removed and attached to the dust separating case 12. Therefore, the outer peripheral surface of the filter member 31b can be cleaned over the whole circumference with one cleaning tool 51 located in the vicinity of the inlet 20.

10 discloses a third embodiment of the present invention.

In 3rd Embodiment, the mounting method of the 1st and 2nd cleaning tools 51a and 51b with respect to the case main body 12a is different from the said 1st Embodiment. The structure of the dust separation case 12 other than this is the same as that of the said 1st Embodiment. Therefore, in 3rd Embodiment, the same code | symbol is attached | subjected to the same component as the said 1st Embodiment, and the description is abbreviate | omitted.

As shown in FIG. 10, the base 52 of the 1st and 2nd cleaning tools 51a and 51b is supported by the 1st side wall 16 of the case main body 12a via the hinge 81, respectively. . For this reason, the 1st and 2nd cleaning tools 51a and 51b are the 1st position where the filter contact member 53 is in contact with the outer peripheral surface of the filter member 31b, and the filter contact member 53 is the filter member 31b. It is rotatable between the 2nd positions which detach | deviate from the outer peripheral surface of a.

Moreover, the hinge 81 contains the spring which is not shown in figure. The spring always presses the first and second cleaning tools 51a and 51b toward the first position. Thereby, the filter contact member 53 is pressurized with the appropriate elasticity with respect to the outer peripheral surface of the filter member 31b. The force for pressing the filter contact member 53 to the outer circumferential surface of the filter member 31b is preferably such that it does not give excessive resistance to the rotation of the filter 31.

Also in this 3rd embodiment, the filter 31 rotates to a circumferential direction following the removal operation | movement of the dust collection case 71, and the attachment operation of the dust collection case 17. As shown in FIG. Therefore, the cleaning operation of the filter 31 can be performed easily using the removal operation | movement and installation operation | movement of the dust collection case 71. FIG.

Therefore, similarly to the first embodiment, the filter 31 in the separation chamber 15 is exposed, and the work of removing dust adhered to the outer circumferential surface of the filter member 31b by hand can be omitted, and thus the filter ( 31) maintenance becomes easy.

In addition, the 1st and 2nd cleaning tools 51a and 51b are movable to the 2nd position spaced apart from the outer peripheral surface of the filter member 31b. As a result, even if hard dust is drawn in between the outer circumferential surface of the filter member 31b and the filter contact member 53, the adverse effect does not occur in the cleaning operation of the filter 31.

That is, in the process of rotating the filter 31 in accordance with the removal operation of the dust collecting case 71, if hard dust adhering to the outer circumferential surface of the filter member 31b collides with the filter contact member 53, The filter contact member 53 is pressed by this. As a result, the first and second cleaning tools 51a and 51b rotate from the first position to the second position with the hinge 81 as a supporting point. In other words, the filter contact member 53 is spaced apart from the outer circumferential surface of the filter member 31b to avoid hard dust.

Therefore, hard dust does not engage between the filter contact member 53 and the outer peripheral surface of the filter member 31b. Therefore, while the rotation of the filter 31 can be continued, damage to the filter member 31b by hard dust can be prevented.

In addition, hard dust falls from the filter member 31b after passing through the filter contact member 53 with rotation of the filter 31. Therefore, hard dust does not reinsert between the filter contact member 53 and the outer peripheral surface of the filter member 31b.

At the same time, the first and second cleaning tools 51a and 51b are again held in the first position by the spring at the time when the hard dust passes through the filter contact member 53. Therefore, the cleaning operation of the rotating filter 31 can be continued.

In the third embodiment, the filter frame 31a on which the filter member 31b is fixed and the base portion 31c may be detachably connected to each other.

According to this configuration, the filter frame 31a to which the filter member 31b is fixed is separated from the first chamber by manually rotating the first and second cleaning tools 51a and 51b from the first position to the second position, for example. We can take out from (15). Therefore, it becomes possible to wash | clean or repair the filter frame 31a and the filter member 31b with water, and workability improves in maintaining the filter 31. FIG.

In the first to third embodiments, the cleaning tool and the filter member are relatively moved by rotating the filter following the removal operation and the attachment operation of the dust collecting case. However, the present invention is not specific to this. For example, while fixing the filter to the first side wall, the cleaning tool may be rotated in accordance with the removal operation and the attachment operation of the dust collecting case. Even in this case, since the filter and the cleaning tool rotate relatively, the dust attached to the filter can be removed by the cleaning tool.

In addition, the filter frame to which the filter member is fixed is not limited to conical, but may be cylindrical.

In addition, in the said 1st Embodiment, although the dust collection case is pushed up by the pop-up spring which a holding means has, and the compression coil spring which a filter drive mechanism has, for example, a pop-up spring is closed and a dust collection case is pushed only by a compression coil spring. You may raise it.

Industrial availability

According to the present invention, in the vacuum cleaner for separating the dust contained in the air by using centrifugal force generated in the separation chamber, the dust attached to the filter in the separation chamber can be easily removed, so that the maintenance of the filter is easy. I can do it.

Claims (14)

A vacuum cleaner body having a suction port,
An electric blower accommodated in the cleaner body and sucking air from the suction port,
A dust separation case having a separation chamber accommodated in the cleaner body and separating dust contained in the air sucked from the suction port by centrifugal force, and a ventilation chamber located downstream of the air flow direction than the separation chamber;
A dust collecting case detachably mounted to the dust separating case and collecting dust separated from the separating chamber;
A filter having a breathability provided in said dust separation case so as to communicate between said separation chamber and said ventilation chamber;
Cleaning means for removing dust attached to the filter by contacting the filter in the separation chamber;
And a driving means for relatively rotating the filter and the cleaning means in association with the removing operation and the mounting operation of the dust collecting case with respect to the dust separating case. The method of claim 1,
A holding means installed in the dust separating case and holding the dust collecting case in the dust separating case by coupling to the dust collecting case;
Release means for releasing the coupling between the holding means and the dust collecting case;
And a pressurizing means for pressurizing the dust collecting case in a direction away from the dust separating case. The method of claim 2,
The said vacuum cleaner main body has an operation part which artificially operates the said release means. The method of claim 1,
The filter has a hollow tubular shape projecting into the separation chamber, and the cleaning means has at least one cleaning tool in contact with an outer circumferential surface of the filter. A vacuum cleaner body having a suction port,
An electric blower accommodated in the cleaner body and sucking air from the suction port,
A dust separation case having a separation chamber accommodated in the cleaner body and separating dust contained in air sucked from the suction port by centrifugal force, and a ventilation chamber located downstream of the air flow direction than the separation chamber;
A dust collecting case detachably mounted to the dust separating case and collecting dust separated from the separating chamber;
A filter having a breathability rotatably supported by said dust separation case so as to communicate between said separation chamber and said ventilation chamber;
A drive mechanism for rotating the filter in conjunction with a removal operation and a mounting operation of the dust collecting case with respect to the dust separating case;
And a cleaning means in contact with the filter in the separation chamber and for removing dust attached to the filter when the filter is rotated. The method of claim 5,
The filter rotates in a first direction when the dust collecting case is removed from the dust separating case, and in a second direction opposite to the first direction when the dust collecting case is mounted on the dust separating case. An electric vacuum cleaner, characterized in that rotating. The method of claim 6,
The drive mechanism includes (1) a gear that rotates together with the filter, and (2) a support that is supported by the dust separation case and engaged with the gear while linearly following the removal operation and the mounting operation of the dust collection case. An electric vacuum cleaner comprising a rod having a rack. The method of claim 7, wherein
A holding means installed in the dust separating case and holding the dust collecting case in the dust separating case by coupling to the dust collecting case;
Release means for releasing the coupling between the holding means and the dust collecting case;
And a pressurizing means for pressurizing the dust collecting case in a direction away from the dust separating case. The method of claim 5,
The filter has a hollow cylindrical shape projecting into the separation chamber, and the cleaning means has a pair of cleaning tools in contact with an outer circumferential surface of the filter, and the cleaning tools are located at positions facing each other in the radial direction of the filter. An electric vacuum cleaner, characterized in that it extends in the axial direction of the filter and has a circumferential portion that is sharpened to reduce its width as it advances outwardly along the radial direction of the filter, respectively. 10. The method of claim 9,
The dust separation case includes an inlet opening to the separation chamber, and the inlet has an opening periphery located at an upstream end along a flow direction of air flowing into the separation chamber, and the one cleaning tool includes the opening. The vacuum cleaner is located in the vicinity of the circumference. 10. The method of claim 9,
The cleaning tool is supported by the dust separation case rotatably in a direction away from the outer peripheral surface of the filter. The method of claim 5,
The filter has a hollow cylindrical shape projecting into the separation chamber, and the cleaning means has a single cleaning tool in contact with the outer circumferential surface of the filter, and the cleaning tool extends in the axial direction of the filter. And a circumferential portion sharpened to reduce the width as it travels outward along the radial direction of the filter. The method of claim 12,
The dust separation case includes an inlet opening to the separation chamber, and the inlet has an opening periphery located at an upstream end along a flow direction of air flowing into the separation chamber, and the one cleaning tool includes the opening. The vacuum cleaner is located in the vicinity of the circumference. The method of claim 12,
And said cleaning tool rotates at least one rotation in the circumferential direction of said filter.

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