JP2008061900A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner, in which a pleated filter can be rotated at such rotation speed that will not deteriorate dust eliminating efficiency, and in which cleaning efficiency of the pleated filter by cleaning air is not deteriorated in elimination of dust. <P>SOLUTION: A control means (control device 200) controls drive power in such a way that suction air flow rate of an electric blower 24 is at a medium level when eliminating dust of the pleated filter. In this constitution, the pleated filter 104 is rotated at such rotation speed that will not deteriorate dust elimination efficiency, while deterioration of cleaning efficiency of the pleated filter 104 by cleaning air in elimination of dust is prevented. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner provided with dust removing means for a pleated filter.

In this type of vacuum cleaner, due to the suction negative pressure generated by the electric blower, the air sucked into the suction air passage passes through the main dust separation / collection means and the pleated filter in this order and flows to the suction opening of the electric blower. In addition, when the electric blower is stopped, by hitting the downstream side of the pleat filter with a hitting member or the like interlocking with the cord reel, the fine dust adhering to the upstream surface of the pleat filter is struck down, and the lower fine dust What was made to collect in a collection chamber is known (for example, refer to patent documents 1).
JP 2004-216209 A

  However, conventionally, there has been a problem that fine dust collected in the fine dust collecting chamber adheres to the pleated filter during the next operation of the electric blower.

  In order to solve this, at the time of dust removal of the pleated filter, air is not sucked into the main dust separating / collecting means from the suction port body, and air is prevented from flowing to the electric blower through the pleated filter. It is conceivable that outside air is sucked into the upstream side of the pleat filter as cleaning air, and the fine dust struck from the pleat filter is returned to the main dust separating / collecting means by the flow of the cleaning air sucked in.

  In this case, in order to form a flow of cleaning air, the fine dust removed from the pleated filter is returned to the main dust separating / collecting means, and the main dust separating / collecting means to the suction opening of the electric blower. It is necessary to provide a bypass air passage. Moreover, it is necessary to provide a bypass filter in the bypass air passage.

  On the other hand, in order to efficiently remove fine dust adhering to the pleated filter, a circular filter chamber is provided, and a circular pleated filter having a large number of radially extending folds in the circumferential direction is provided in the filter chamber. The pleat filter is rotatably and airtightly fitted to the pleat filter so that it can be rotated by a drive motor around the center line, and when the pleat filter is driven to rotate, the pleat filter is sequentially engaged and flipped. It is also conceivable to remove fine dust adhering to the pleated filter.

  In such a configuration, the main dust separation / collection means and the pleated filter are sequentially passed through the suction main air passage through the suction opening of the electric blower, and the suction negative pressure of the electric blower is bypassed by the bypass air passage. By operating the filter chamber through the main dust separating / collecting means and the return air passage, the cleaning air sucked into the filter chamber is returned to the electric air blower through the return air passage, the main dust separating / collecting means and the bypass air passage. The fine dust removed from the pleated filter can be collected by the main dust separating / collecting means.

  However, since the pleated filter is airtightly fitted in the filter chamber, a sliding resistance is generated between the pleated filter and the suction chamber when the pleated filter is rotated, and this sliding resistance is a suction force acting on the filter chamber. It tends to increase as the negative pressure increases. As the sliding resistance increases, the load on the drive motor that rotationally drives the pleated filter also increases, and the rotational speed of the pleated filter tends to decrease.

  Further, if the suction negative pressure acting on the filter chamber is reduced in order to reduce this sliding resistance, the flow of the cleaning air sucked into the suction chamber becomes weak, and the cleaning efficiency of the pleated filter tends to decrease.

  Accordingly, an object of the present invention is to provide an electric vacuum cleaner that can rotate the pleat filter at a rotation speed at which the dust removal efficiency does not decrease, and that does not decrease the cleaning efficiency of the pleat filter by the cleaning air during dust removal. It is.

  In order to achieve this object, an electric vacuum cleaner of the present invention includes an electric blower that applies a suction negative pressure to a main dust separation / collection means, a control means that drives and controls the electric blower, and a driving power of the electric blower An input switching operation means for switching the suction air volume to the electric blower by switching, a storage chamber provided between the main dust separation / collection means and the suction opening of the electric blower, and the storage A filtration separation unit having a circular filter that is provided in the chamber and is hermetically fitted so as to be rotationally driven around the center line thereof; drive means for rotationally driving the filtration separation unit; and immediately upstream of the filter. A cleaning air inlet that introduces air as cleaning air and a first flow path that is sucked into the electric blower through the main dust separation / collection means and the filtration separation unit in normal cleaning are formed. In the air cleaning of the storage chamber, the air flow control means for forming a second flow path for sucking the air introduced from the cleaning air introduction port to the electric blower without passing through the filtration separation unit, The control means is a vacuum cleaner that controls the drive power so that the suction air volume of the electric blower becomes a medium level when the dust filtering / separating section is washed with air.

  According to this configuration, it is possible to rotate the pleat filter at a rotation speed at which the dust removal efficiency does not decrease, and it is possible to prevent the cleaning efficiency of the pleat filter by the cleaning air during dust removal from decreasing.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The vacuum cleaner 10 shown in FIG. 1 has a vacuum cleaner main body 11 and a dust collecting hose 12 having one end detachably connected to a connection port 11A of the vacuum cleaner main body 11 and a hand operation tube 13 provided at the other end. And an extension pipe 14 that is detachably connected to the hand operation pipe 13 and a suction port body 15 that is detachably connected to the distal end portion of the extension pipe 14. The hand operation tube 13 is provided with an operation unit 13A. The operation unit 13A includes an off switch 13a for stopping the driving of the electric blower 24, a strong switch 13b for setting the power of the electric blower 24 to “strong”, and the power of the electric blower 24 “weak” and “medium” each time it is pressed. And a weak / medium changeover switch 13c and the like.

  The suction port body 15 is formed with a suction chamber (not shown) in which a suction opening (dust suction port) (not shown) for sucking dust is formed on the bottom surface, and the suction chamber includes an extension pipe 14 and a dust collecting hose. 12 and the connection port 11A communicate with the suction connection port 57A of the dust collection unit 50 (see FIG. 10) provided in the cleaner body 11.

  The cleaner body 11 has a body case 20. As shown in FIGS. 2 to 4 and 27, a dust collection unit chamber (a recess for arranging the dust collection unit) 22 having an upper opening 22 </ b> A is formed on the front side of the main body case 20.

  In addition, a blower chamber 23 is formed in the rear part of the main body case 20 as shown in FIG. The blower chamber 23 and the dust collection unit chamber 22 are partitioned by a partition wall 26 having a connection air passage 25 as shown in FIG. As shown in FIGS. 14 and 27, the connection air passage 25 has a front opening 25B.

  Further, a lid case 500 (see FIG. 1) disposed above the dust collection unit chamber 22 is attached to the upper portion of the main body case 20 so as to be freely opened and closed. The lid case 500 covers the entire upper portion of the main body case 20 together with the dust collection unit chamber (storage chamber) 22. The main body case 20 is not sealed by the lid case 500.

The cleaner body 11 includes a dust collection unit 50 (see FIGS. 2 and 27) mounted in the dust collection unit chamber 22 of the main body case 20, and an electric blower 24 (see FIG. 2) disposed in the blower chamber 23. 27). In the dust collecting unit chamber 22, a pop-up mechanism 1000 (see FIG. 7) for popping up a dust collecting container 410 (FIG. 11) described later is provided.
(Cover case mounting structure)
Further, as shown in FIG. 1, a pair of legs 501 extending obliquely downward is formed at the lower part of both side parts of the lid case 500, and the lower part 501A of the legs 501 is a cylindrical axle 17 ( 5 (see FIG. 5), and the rear wheel 16 attached to the cylindrical axle 17 is covered. As shown in FIG. 5, a torsion coil spring 18 is mounted in the cylindrical axle 17, one end of the torsion coil spring 18 is fixed to the cylindrical axle 17, and the other end 18A of the torsion coil spring 18 is a leg 501 (see FIG. 1). The torsion coil spring 18 urges the lid case 500 clockwise about the cylindrical axle 17 in FIG.

  Actually, a rotating body 900 (see FIG. 2) is rotatably mounted on the cylindrical axle 17, and the other end 18A of the torsion coil spring 18 is locked to the protrusion 902 (see FIG. 14) of the arm portion 901 of the rotating body 900. The arm portion 901 is locked in the leg portion 501 of the lid case 500, and the lid case 500 is urged clockwise.

  Then, the lid case 500 is rotated clockwise about the cylindrical axle 17 so that the lid case 500 is opened as indicated by the chain line in FIG.

As shown in FIGS. 6 and 7, a substantially inverted L-shaped engaging member 510 is provided on the front side of the lid case 500.
(Filter drive mechanism)
A cylindrical connection air passage portion (connection air passage) 25 (see FIG. 27) having a front opening 25B (see FIG. 14) is formed on the front side (left side in FIG. 1) of the electric blower 24 of the main body case 20. The connection air passage portion 25 communicates with the suction opening 24 </ b> A of the electric blower 24.

  As shown in FIG. 14, a disk-shaped lattice member 600 is disposed as a rotating plate (a rotating plate, a rotating member) in the front opening 25 </ b> B of the connection air passage unit 25. The lattice member 600 is attached to the partition wall 26 at a position that is not shown in the figure so as to be rotatable via a support shaft 600a. A gear (not shown) is provided on the circumferential surface of the lattice member 600, and a pinion 600b is engaged with the gear. The pinion 600b is rotated by a motor M1.

  The lattice member 600 is provided with a plurality of plate portions 600A extending radially in the radial direction at equal pitches (equal intervals) in the circumferential direction. Moreover, a slit 600B as shown in FIGS. 14A to 14C is formed in the radial direction end of the plate portion 600A in the radial direction. In the slit 600B, a base 601a of a plate-like protrusion (plate-like protrusion) 601 as shown in FIG. 14A is disposed as shown in FIG. 14C.

  The base portion 601a is formed integrally with the plate portion 600A through the hinge portion 601b at the center side of both end portions in the radial direction. Thereby, the protrusion 601 is provided so as to be movable and displaceable via the hinge portion 601b in a direction perpendicular to the plate surface and in a direction along the plate surface. In addition, inclined guide portions 601c and 601d that are inclined in the central direction and the radial direction are formed at both ends in the radial direction of the protrusion 601.

  Further, as shown in FIG. 14D, the protrusion 601 has a top section 601e having a circular cross section.

  The protrusion 601 engages with a valley (between the folds 104a and 104a) on the back side (downstream of the air flow) of the pleated filter (second dust separating means) 104 (see FIG. 13), which will be described later, and will be described later. The pleated filter body 100 is rotated. By rotating the pleated filter body 100, dust removing means 2100 of a dust removing mechanism 2000 (see FIG. 31) described later removes fine dust attached to the pleated filter 104.

Furthermore, as shown in FIG. 27, a suction pipe 27 communicating with the suction opening 24 </ b> A of the electric blower 24 is provided in the connection air passage section 25, and an opening (suction wind) is provided at the tip of the suction pipe 27. Road) A fourth on-off valve 28 for opening and closing 27A is provided. The opening / closing operation of the fourth opening / closing valve 28 is performed by a motor M2 (see FIG. 37).
(Lid case lock structure)
A clamp 700 that locks the closed lid case 500 is provided on the connection port 11 </ b> A of the main body case 20.

  As shown in FIGS. 7 and 8, the clamp 700 has an operation portion 701 whose upper surface is formed in a curved surface, and the rear surface 701A of the operation portion 701 is on the rear side (right side in FIGS. 7 and 8). The support plate portions 702 and 702 projecting to) are formed, and shaft portions 703 and 703 are formed on the outer surface of the support plate portion.

  The shaft portions 703 and 703 are rotatably held by bearing portions 27 and 27 provided in the main body case 20 as shown in FIG. The clamp 700 is urged clockwise around a shaft portion 703 in FIG. 7 by a spring (not shown). The clamp 700 is prevented from rotating clockwise from the position shown in FIG. 7 by a regulating member (not shown).

  Then, when the operation portion 701 is pushed downward from above, the clamp 700 resists the biasing force of a spring (not shown) from the position shown in FIG. 7 as shown in FIG. 9 with the shaft portions 703 and 703 as the center. It is designed to rotate clockwise.

  A front wall portion 704 extending downward is formed at the front end of the operation portion 701, and a pressing portion 705 extending rearward is formed below the front wall portion 704. A support portion 706 extending upward is formed at the rear portion of the pressing portion 705, and a locking claw 707 is formed above the support portion 706.

  As shown in FIGS. 6 and 7, the latching claw 707 is engaged with the tip 511 of the engaging member 510 of the lid case 500 to lock the lid case 500 to the main body case 20.

When the clamp 700 is rotated clockwise, as shown in FIG. 9, the locking claw 707 of the clamp 700 is disengaged from the distal end portion 511 of the engaging member 510 of the lid case 500, and the lock of the lid case 500 is released. The
(Dust collection unit 50)
As shown in FIG. 10, the dust collection unit 50 includes a dust separation unit 400 and a dust collection container 410 that is detachably attached to the dust separation unit 400.

The dust separation unit 400 includes a dust separation unit (first dust separation unit) 52 and a filter unit 80 integrated with the dust separation unit 52. The dust separating unit 52 and the dust collecting container 410 constitute main dust separating / collecting means.
<Dust separator 52>
As shown in FIGS. 10 and 12, the dust separator 52 includes a separation chamber portion (upstream air passage) 54 formed in a cylindrical shape by the outer peripheral wall 53, and the axis of the separation chamber portion 54 in the separation chamber portion 54. A substantially conical dust separating means 55 provided along the suction side, a suction air passage portion (guide air passage) 56 provided outside the right side wall 54A of the separation chamber portion 54, and a suction connection port (dust as a suction air passage). And a guide air passage body 57 that guides air from the suction inlet 57 </ b> A to the separation chamber portion 54. The suction connection port 57A communicates with the connection port 11A of the cleaner body 11 when the dust separation unit 400 is mounted in the dust collection unit chamber 22 of the cleaner body 11. The suction air passage portion 56 is provided below the guide air passage body 57.

  As shown in FIG. 12, an introduction opening 53 </ b> A for introducing dust separated from air into the dust collecting container 410 is formed in the upper portion of the outer peripheral wall 53 of the separation chamber portion 54. Further, as shown in FIG. 23, a return opening 53D is formed on the lower side of the outer peripheral wall 53 forming an arc surface. The return opening 53D is provided with a second on-off valve K2 that can be opened and closed. As shown in FIGS. 24 and 25, one end of a return air duct 2510 is connected to the return opening 53D. The return air passage tube 2510 forms a return air passage (fine dust return air passage) 2511 (see FIGS. 21 and 22).

  A shaft portion KJ1 is formed at one end of the second on-off valve K2, and as shown in FIG. 24, the shaft portion KJ1 is pivotally supported upstream of the separation chamber portion 54, and the other end of the second on-off valve K2 is It is located downstream of the separation chamber 54. As shown in FIG. 25, the second on-off valve K2 is opened by rotating counterclockwise about the shaft portion KJ1.

  The second on-off valve K2 is closed by air introduced into the separation chamber 54 from a connection opening 54Aa, which will be described later, and opened by air returned from the return air duct 2510 into the separation chamber 54. ing.

  As shown in FIG. 23, a connection opening 54Aa communicating with the separation chamber portion 54 is formed in the guide air passage body 57, and the first opening / closing valve K1 is provided in the connection opening 54Aa so as to be openable and closable. When the first on-off valve K1 is switched to the solid line position, the connection opening 54Aa is closed, and when the first opening / closing valve K1 is switched to the chain line position, the connection opening 54Aa is opened. The air introduced from the guide air passage body 57 into the separation chamber portion 54 through the connection opening 54Aa is rotated counterclockwise in FIG.

  Further, a circular opening 154A (see FIG. 10) and a fan-shaped opening 154B (see FIGS. 12 and 24) are formed in the right side wall 54A of the separation chamber portion 54, and a dust separating means 55 is attached to the opening 154A. A net filter NF2 (see FIG. 24) is attached to the opening 154B.

  The dust separating means 55 includes a plurality of frames 55a and a net filter NF1 attached around the frame 55a. The suction air passage portion 56 communicates with the inside of the separation chamber portion 54 through the opening 154A (see FIG. 10) of the right side wall 54A and the net filter NF1 (see FIG. 12), and the net of the opening 154B of the right side wall 54A. The separation chamber 54 communicates with the filter NF2 (not shown).

  As shown in FIG. 12, an opening 56D is formed at the bottom of the suction air passage portion 56, and a filter (pleat filter) PF is attached to the opening 56D as a bypass filter. Further, one end of a bypass air passage tube 2501 that forms a bypass air passage 2500 (see FIG. 21) is connected to the opening 56D as shown in FIG.

  The other end of the bypass air passage tube 2501 is connected to the suction tube 27 as shown in FIG. 27, and the suction air passage portion 56 and the suction tube 27 communicate with each other through the bypass air passage tube 2501. The bypass air duct 2501 is provided with a fifth on-off valve (solenoid valve) 2502.

   The suction air passage portion 56 communicates with a storage case (second dust separation case) 81 of the filter portion 80 to be described later, and via a connection opening 56A formed in the right side wall portion 156 (see FIG. 12). It communicates with a dust collection chamber (dust collection section) 73 of a dust collection case section 74 described later.

  As shown in FIGS. 11 and 12, the dust collecting container 410 has a communication case portion 72 in which a communication passage 71 extending in the left-right direction is formed in the upper portion and a right end portion (in FIG. 12) of the communication case portion 72 downward. And a dust collecting case portion 74 having a dust collecting chamber 73 for collecting dust.

  As shown in FIG. 11, an opening 72 </ b> A that communicates with the communication path 71 (see FIG. 12), a hook 72 </ b> F, and a recess 73 are formed on the lower surface of the communication case portion 72. A rib 72 </ b> R extending in the vertical direction is formed in the recess 73. The opening 72A is connected to the introduction opening 53A of the dust separator 52 as shown in FIG.

  Further, a connection opening 75 is formed in the left side wall portion 74 </ b> A of the dust collection case portion 74, and a net filter NF <b> 3 is attached to the connection opening 75.

  The dust collection case 74 has a lid 74A that can be opened and closed. As shown in FIG. 11, a rib 74R extending downward is formed at the bottom of the lid 74A. The lid 74A is rotatable about the axis 74J, and is opened and closed by this rotation.

When the dust collecting container 410 is attached to the dust separating unit 400, as shown in FIG. 12, the introduction opening 53A of the dust separating unit 52 is connected to the opening 72A of the dust collecting container 410, and the connection opening 75 of the dust collecting container 410 is connected. Is connected to the connection opening 56A of the suction air passage portion 56 of the dust separation unit 400.
<Filter unit 80>
As shown in FIGS. 13 and 27 to 29, the filter unit 80 includes a cylindrical storage case 81 whose rear surface is open. The storage case 81 has a rear cylinder part 81a and a front cylinder part 81b having a smaller diameter than the rear cylinder part 81a. In addition, a circular filter chamber 81c is formed in the storage case 81 as shown in FIGS. 27 to 29, and a circular step surface 81d located between the cylindrical portions 81a and 81b is formed on the inner peripheral surface of the filter chamber 81c. Is formed.

  The filter unit 80 includes the pleated filter body (secondary filter) 100 shown in FIGS. The pleated filter body 100 includes a shaft portion 101A provided at the center, a circular (cylindrical) filter frame 100a provided on the outer periphery, and a pleated filter disposed between the shaft portion 101A and the filter frame 100a. 104.

  The pleated filter 104 has a plurality of folds 104a extending in the radial direction (radial direction) when viewed from the back side, and a plurality of folds 104b extending in the radial direction (radial direction) when viewed from the front side. The plurality of folds 104a and 104b extending in the radial direction are arranged in a wave shape in the circumferential direction of the filter frame 100a. In addition, the pleat filter 104 is embedded and fixed in the shaft portion 101A at the center side by insert molding, and the peripheral portion is embedded and fixed in the filter frame 100a by insert molding.

  The filter frame 100a is rotatably mounted (fitted) in the rear part (rear cylinder part 81a) of the circular filter chamber 81c. Although not shown, the front end of the filter frame 100a is disposed close to the step surface 81d. The shaft portion 101A is rotatably mounted on a shaft 2001 (see FIG. 31) described later.

  Further, a seal ring 81e is attached to the rear end surface of the storage case 81 as shown in FIG. 13 (see FIG. 21).

  A dust separation part 52 (see FIG. 10) is integrally formed on the front surface of the front wall part 84 of the storage case 81. Further, as shown in FIGS. 12 and 13, a connection opening 84 </ b> A is formed in the front wall portion 84 of the storage case 81, and the connection opening 84 </ b> A is connected to the suction air passage portion 56. The inside of the storage case 81 and the suction air passage portion 56 communicate with each other through the connection opening 84A.

  29, an outside air introduction port (cleaning air introduction air passage) 84F for introducing outside air into the storage case 81 is formed in the upper portion of the front wall portion 84, and the front surface of the front wall portion 84 is shown in FIG. As shown, a sixth on-off valve K6 that opens and closes the outside air inlet 84F is provided. The sixth on-off valve K6 is biased by the elastic member 86 in the direction of closing the outside air introduction port 84F.

  The sixth on-off valve K6 is provided with a contact piece 87 shown in FIG. 29, and this contact piece 87 projects into the storage case 81 from the outside air introduction port 84F. The contact piece 87 is formed with an inclined surface 87a that increases in the amount of protrusion into the storage case 81 as it goes to the right (in FIG. 29). When the abutting piece 87 is pressed against the urging force of the elastic member 86, the sixth on-off valve K6 is opened, and the outside air is introduced into the storage case 81 from the outside air introduction port 84F.

  As shown in FIG. 28, a bottom opening 82A is formed at the bottom of the peripheral wall portion 82 of the storage case 81, and the other end of the return air duct 2510 is connected to the bottom opening 82A. The return air duct 2510 allows the inside of the storage case 81 on the upstream side of the pleated filter body 100 to communicate with the inside of the separation chamber 54 of the dust separator 52 (see FIG. 21).

Then, when the dust collection unit 50 is mounted in the dust collection unit chamber 22 of the main body case 20, the rear opening 81 </ b> B of the storage case 81 becomes the front opening 25 </ b> B (see FIGS. 13 and 14) of the connection air passage portion 25 of the main body case 20. Be joined.
<Pop-up mechanism>
As shown in FIG. 7, the pop-up mechanism 1000 includes a pair of pop-up means 1100 and 1110 (see FIG. 3) for popping up the dust collecting container 410 (lifting up the dust collecting container 410 by a spring), and a dust collecting container. Locking means 1200 for fixing 410 to the attachment position of the dust separation unit 400 and release means 1300 for releasing the lock of the locking means 1200 are provided.

  The pop-up means 1100 is provided on the upper surface of the outer peripheral wall 53 of the dust separation unit 52 of the dust separation unit 400, extends upward, and has a rectangular cylindrical cross-section guide case 1101, and a spring disposed in the guide case 1101. 1102 (omitted in FIG. 3). The guide case 1101 is formed with a pair of slits 1103 (see FIG. 3) extending in the vertical direction.

  Similarly, the pop-up means 1110 includes a cylindrical guide case 1111 (see FIG. 3) provided in the dust collection unit chamber 22 and a spring 1112 disposed in the guide case 1111. The guide case 1111 has a pair of slits 1113 (see FIG. 3) extending in the vertical direction.

  When the dust collection container 410 is mounted on the dust separation unit 400, the ribs 72R and 74R (see FIG. 11) of the dust collection container 410 enter the slits 1103 and 1113 of the guide cases 1101 and 1111 and springs 1102 and 1112 (FIG. 7). ) Is compressed against the biasing force. The dust collecting container 410 is urged upward by the urging force of the springs 1102 and 1112.

  The locking means 1200 is provided on the upper portion of the guide air passage body 57 so as to be movable in the front-rear direction (left-right direction in FIG. 7) and extends in the front-rear direction, and guides the slide member 1201 in the front-rear direction. A covered guide cover 1202 (see FIG. 4) and a spring (not shown) for urging the slide member 1201 leftward (in FIG. 7) are provided.

  On the rear side of the slide member 1201, a cylindrical portion 1203 having a rectangular cross section protruding upward is formed, and the cylindrical portion 1203 protrudes from an opening 1202A (see FIGS. 3 and 4) of the guide cover 1202. The length in the front-rear direction of the cylindrical portion 1203 is set to be shorter than the width in the front-rear direction of the opening 1202A, so that the movement of the slide member 1201 in the front-rear direction is not hindered.

An opening 1204 is formed on the upper surface of the cylindrical portion 1203. When the dust collecting container 410 is attached to the dust separation unit 400, the hook 72F of the dust collecting container 410 enters the opening 1204 and its edge (fixing means) 1204a. The dust collecting container 410 is locked at the position (mounting position) shown in FIG. 7 by this engagement.
(Unlocking means)
The release means 1300 includes a slide member 1201 and a pressing portion 705 of the clamp 700 that moves the slide member 1201 to the right (in FIG. 7). Then, when the operation portion 701 is pushed from above and the clamp 700 is rotated as shown in FIG. 9, the pressing portion 705 of the clamp 700 is brought into contact with the distal end portion 1201a of the slide member 1201 against a biasing force of a spring (not shown). The slide member 1201 is moved to the right in contact. By this movement, the hook 72F of the dust collecting container 410 is released from the edge 1204a of the opening 1204 of the cylindrical portion 1203 of the slide member 1201, and the dust collecting container 410 is unlocked.
(Dust removal mechanism)
As shown in FIG. 31, the dust removal mechanism 2000 includes a shaft 2001 that is rotatably provided at the center of the storage case 81, an arm 2002 that is attached to the shaft 2001 and extends upward, and the arm 2002. And a dust removing means 2100 provided at the upper part (front end part) (see FIG. 32). A third on-off valve K3 is integrally provided at the lower part of the arm 2002. The third on-off valve K3 rotates integrally with the arm 2002 and the shaft 2001 and is rotated to the position shown in FIG. The connection opening (suction air passage) 84A of the storage case 81 is closed.

  Further, when the arm 2002 and the third on-off valve K3 are rotated counterclockwise to the chain line position, the connection opening 84A of the storage case 81 is opened.

  When the arm 2002 is positioned at the position shown in FIG. 31, the shaft portion 2011 at the tip of the arm 2002 comes into contact with the inclined surface 87a of the contact piece 87 of the sixth on-off valve K6 as shown in FIG. The sixth on-off valve K6 is pressed against the urging force of the elastic member 86, and the sixth on-off valve K6 is opened as shown in FIG.

  As shown in FIGS. 32, 35, and 36, the dust removing means 2100 includes a shaft portion 2101 that is rotatably provided at the shaft center portion 2002A of the tip of the arm 2002, and a pair that protrudes outward from the shaft portion 2101. The support portion 2102, a roller 2103 rotatably provided at the distal end portion of the support portion 2102, and a protrusion 2104 that protrudes outward from the shaft portion 2101. The pair of support portions 2102 are disposed at a predetermined angle, and the protrusion 2104 is disposed on a line that bisects the predetermined angle and is opposite to the support portion 2102.

  As shown in FIG. 18, the roller 2103 contacts the bottom surface 84 Ma of the groove 84 </ b> M of the front wall portion 84 of the storage case 81, and the protrusion 2104 contacts the peak portion of the pleated filter 104. The groove 84M is formed in an arc shape as shown in FIGS. 29 and 31, and the rotation of the arm 2002 is restricted at both ends of the groove 84M. The arm 2002 is located within the range of the groove 84M, that is, the solid line position shown in FIG. And can be rotated within the range of the chain line position. Although the rotation of the arm 2002 is not shown, it can be executed by forming a protrusion (stopper) on the front wall 84, for example.

  The protrusion 2104 can rotate in the left-right direction (in FIG. 35) about the shaft center 2002A together with the shaft portion 2101, and the protrusion 2104 is formed by the biasing force of the spring BN (see FIG. 18). It returns to the original position shown at 35.

  As the pleated filter 104 rotates, the protrusion 2104 that contacts the peak portion of the pleated filter 104 rotates about the shaft center 2002A together with the shaft portion 2101. When the pleat filter 104 is rotated by a predetermined angle, the protrusion 2104 moves over the peak portion of the pleat filter 104 and returns to the original position by the biasing force of the spring. At this time, the protrusion 2104 hits the peak of the next pleat filter 104, thereby vibrating the pleat filter 104 and dropping fine dust adhering to the pleat filter 104.

As shown in FIG. 18, the shaft 2001 provided in the storage case 81 passes through the front wall portion 84 and protrudes forward, and an opening / closing mechanism 2200 for opening and closing the first opening / closing valve K1 is provided at the tip of the shaft 2001. The gear 2201 is provided.
(Opening / closing mechanism)
19 and 20, the opening / closing mechanism 2200 includes a rack 2202 meshed with a gear 2201, a slide plate 2203 having the rack 2202, and movable in the left-right direction, and one end of the slide plate 2203 (see FIG. 19, a support portion 2204 extending forward from the left end) and having a pin 2205 at its tip, and an arm 2208 having a long hole 2206 with which the pin 2205 is engaged and extending from the shaft 2207 of the first on-off valve K1. Have.

  A long hole 2203 A is formed in the slide plate 2203, and a shaft 2001 is inserted into the long hole 2203, and the shaft 2001 moves relative to the long hole 2203 to move the slide plate 2203 in the horizontal direction. It does not cause any trouble.

  Further, the pin 2205 engaged with the long hole 2206 of the arm 2208 is relatively movable along the long hole 2206. Therefore, the arm 2208 rotates together with the shaft 2207 when the slide plate 2203 moves in the left-right direction, and the first on-off valve K1 is opened by the rotation of the shaft 2207.

  For example, when the slide plate 2203 is located at the position shown in FIGS. 19 and 20, the first on-off valve K1 closes the connection opening 54Aa of the guide air passage body 57 as shown in FIG. At this time, the sixth on-off valve K6 is opened as shown in FIGS. 19 and 20, and the third on-off valve K3 closes the connection opening 84A of the storage case 81 as shown in FIG.

When the slide plate 2203 moves to the right from the position shown in FIGS. 19 and 20, the first on-off valve K1 moves to the chain line position shown in FIG. 23, the connection opening 54Aa is opened, and the sixth on-off valve K6 is 19 and 20, the third on-off valve K3 moves to the position indicated by the chain line in FIG. 31 to open the connection opening 84A of the storage case 81.
(Control device)
FIG. 37 is a block diagram showing the configuration of the control system of the vacuum cleaner. In FIG. 37, reference numeral 200 denotes a control device (control means) that controls the motors M1 and M2 and the electromagnetic valve 2502 based on the operation of the operation unit 13A.

  Further, the control device 200 controls the driving power of the electric blower 24 so that the suction air volume of the electric blower 24 becomes a medium level when the pleat filter 104 is dedusted. This drive power control can be executed by phase control of the input to the electric blower 24, that is, duty ratio control.

  Note that when the strong switch 13b is turned on, the control device 200 sets the duty ratio to 80% or more and sets the power (intake air volume) of the electric blower 24 to a strong level. In addition, when the control device 200 is turned on by pressing the weak / medium changeover switch 13c, the duty ratio is set within a range of 20 to 30%, and the power (intake air volume) of the electric blower 24 is set to a weak level. When the changeover switch 13c is pressed again to turn it ON, the duty ratio is set within a range of 30% to 80%, and the power (intake air volume) of the electric blower 24 is set to a medium level.

Further, the control device 200 enters the dust removal mode of the pleat filter 104 when the turn-off switch 13a is turned on. In this dust removal mode, first, the motor M2 and the electromagnetic valve 2502 are controlled by the control device 200 as will be described later, and then the electric blower 24 is driven with medium level power (suction air volume) and the motor M1 is driven. To be controlled.
[Operation]
Next, operation | movement of the vacuum cleaner comprised as mentioned above is demonstrated.

  First, as shown in FIG. 2, the dust collection unit 50 is mounted in the dust collection unit chamber 22 of the cleaner body 11. This dust collecting unit 50 is provided with a seal ring 81e at the rear end of a storage case 81 provided at the rear, and the filter frame 100a of the pleated filter body 100 slightly protrudes from the seal ring 81e as shown in FIG. ing.

  Therefore, when the dust collection unit 50 is mounted in the dust collection unit chamber 22, the rear end of the storage case 81 presses the inclined guide portions 601c and 601d of the protrusions 601 provided on the lattice member 600 and the circular top portion 601e. Become.

  Then, by this pressing, the protrusion 601 deflects the hinge portion 601b and is moved rearward (blower chamber side), and the rear end of the storage case 81 gets over the protrusion 601. When the rear end of the storage case 81 thus climbs over the projection 601, the projection 601 returns to its original shape by the elastic force of the hinge portion 601 b, and the restored projection 601 enters between the pleats 104 a and 104 a of the pleated filter 104. become. Thereby, when the disk-shaped lattice member 600 rotates around the support shaft 600a, the protrusion 601 engages with the fold 104a, and the pleated filter body 100 can be rotated integrally with the lattice member 600.

  Next, as shown in FIG. 1, the dust collection hose 12 is connected to the connection port 11 </ b> A of the cleaner body 11 and the suction port body 15 is connected to the hand operation tube 13 via the extension tube 14.

  At this time, as shown in FIG. 21, the first on-off valve K1, the third on-off valve K3, and the fourth on-off valve 28 are opened, and the second on-off valve K2, the fifth on-off valve 2502, and the sixth on-off valve. K6 is closed.

  That is, the slide plate 2203 is moved rightward from the position shown in FIGS. 19 and 20, the first on-off valve K1 is moved to the chain line position shown in FIG. 23, the connection opening 54Aa is opened, and the sixth on-off valve K6 is closed as shown in FIG. 30, and the third on-off valve K3 is moved to the position shown by the chain line in FIG. 31 to open the connection opening 84A of the storage case 81.

  When the switch 13b of the operation unit 13A of the hand operation tube 13 is operated, the electric blower 24 is driven. By driving the electric blower 24, air is sucked from the suction opening 24 </ b> A of the electric blower 24, a negative pressure acts in the storage case 81 of the dust collection unit 50 through a connection air passage portion (not shown), and suction air It acts on the inside of the dust collection case 74 and the separation chamber portion 54 of the dust separation portion 52 via the passage portion 56. Then, the negative pressure acts on the dust collecting hose 12, the extension pipe 14 and the suction port body 15 via the guide air passage body 57, and dust is sucked together with air from the suction port body 15.

  The sucked dust and air are sucked into the suction connection port 57A of the dust collecting unit 50 through the extension pipe 14 and the dust collecting hose 12. The dust and air sucked into the suction connection port 57A are introduced into the separation chamber portion 54 of the dust separation portion 52 through the guide air passage body 57, and rotate counterclockwise in FIG. I will do it. Even if the second on-off valve K2 is opened by this air flow, it is forcibly closed.

  Then, the dust and air are separated by inertia by this rotation, and the air passes through the net filter NF1 (see FIG. 12) of the dust separating means 55 and the net filter NF2 (see FIG. 24) of the opening 154B, and further, the suction air passage section 56. Then, the air is sucked into the storage case 81 of the filter unit 80.

  On the other hand, the separated dust is introduced together with a part of air into the communication case portion 72 of the dust collecting container 410 from the introduction opening 53A of the separation chamber portion 54 by inertial force. The introduced dust and air are sucked into the dust collection chamber portion 73 through the communication passage 71 of the communication case portion 72, and the dust is collected in the dust collection chamber portion 73.

  The air sucked into the dust collection chamber portion 73 is sucked into the suction air passage portion 56 through the net filter NF3 and further sucked into the storage case 81 of the filter portion 80.

  The air sucked into the storage case 81 passes through the pleated filter 104 of the pleated filter body 100 and is sucked into the suction pipe 27 (see FIG. 21) in the connection air passage portion 25 of the cleaner body 11, and further the electric blower 24. Is sucked into the suction opening 24A.

  The air sucked into the suction opening 24 </ b> A of the electric blower 24 passes through the electric blower 24 and is exhausted from the exhaust port 20 </ b> H (see FIG. 21) of the cleaner body 11.

  When the dust collected in the dust collecting container 410 is discarded after the cleaning is completed, the operation unit 701 of the clamp 700 is pressed from above. By this pressing, the clamp 700 rotates counterclockwise around the shaft portion 703 from the position shown in FIG. 7 against the biasing force of a spring (not shown).

  When the clamp 700 is rotated counterclockwise, the locking claw 707 of the clamp 700 is disengaged from the distal end portion 511 of the engaging member 510 of the lid case 500 as shown in FIG. Is done. When this lock is released, the lid case 500 is opened by the torsion coil spring 18 (see FIG. 5) as shown by a chain line in FIG.

  On the other hand, when the clamp 700 is rotated as shown in FIG. 9, the pressing portion 705 of the clamp 700 moves the slide member 1201 to the right, and this movement causes the hook 72 </ b> F of the dust collecting container 410 to move to the opening 1204 of the slide member 1201. The dust container 410 is released from the edge 1204a and unlocked. Then, the ribs 72R and 74R of the dust collecting container 410 are pushed upward by the urging force of the springs 1102 and 1112 of the guide cases 1101 and 1111 as shown in FIG. That is, the dust collecting container 410 is popped up by the urging force of the springs 1102 and 1112 as shown in FIG. Thereafter, the user takes out the dust collection container 410 popped up from the cleaner body 11, opens the cover 74 </ b> A of the dust collection case 74, and discards the dust in the dust collection chamber 73.

  By the way, when there is a gap between the pressing portion 705 of the clamp 700 and the tip portion 1201a of the slide member 1201, when the operation portion 701 of the clamp 700 is pressed, the pop-up of the dust collecting case 410 is opened after the lid case 500 is opened. Done.

Thus, simply pressing the operation part 701 of the clamp 700 opens the lid case 500 and pops up the dust collecting container 410, so that it is easy to remove the dust collecting container 410 from the cleaner body 11. Become.
(Dust removal mode of pleat filter 104)
Further, the control device 200 enters the dust removal mode when the off switch 13a of the operation unit 13A of the hand operation tube 13 is operated, and first controls the motor M2 to close the fourth on-off valve 28 as shown in FIG. And the fifth on-off valve 2502 is opened. Further, the control device 200 drives and controls the motor M1, and rotates the lattice member 600 by the motor M1 (see FIGS. 14 and 37).

  Thereby, the protrusion 601 engages with the fold 104a, and the pleated filter body 100 is rotated integrally with the lattice member 600. At this time, since there is only a slight gap between the protrusion 601 and the side surface of the slit 600B, the protrusion 601 transmits a rotational force in contact with the inner surface of the slit 600B, and rotates to the hinge portion 601b. Unreasonable power of time does not work.

  When the pleated filter body 100 rotates, the projection 2104 of the arm 2002 of the dust removing mechanism 2000 comes into contact with the peak portion of the pleated filter 104, so that the arm 2002 and the shaft 2001 are rotated clockwise from the chain line position in FIG. It rotates with the body 100.

  When the arm 2002 is rotated to the position shown in FIG. 31, the end of the groove 84M restricts the rotation of the arm 2002 and the shaft 2001, and only the pleat filter body 100 rotates.

  When the arm 2002 rotates to the position shown in FIG. 31, the third on-off valve K3 closes the connection opening 84A of the storage case 81. Further, the shaft portion 2011 of the arm 2002 presses the contact piece 87 of the sixth on-off valve K6 to open the sixth on-off valve K6. That is, as shown in FIG. 33, the outside air inlet 84F of the storage case 81 is opened.

  On the other hand, when the shaft 2001 is rotated together with the arm 2002, the gear 2201 of the opening / closing mechanism 2200 is rotated, and the slide plate 2203 is moved to the left by the rotation of the gear 2201, and FIGS. Move to the position shown in. By the movement of the slide plate 2203, as shown in FIG. 23, the first on-off valve K1 moves from the chain line position to the solid line position, and the connection opening 54Aa of the guide air passage body 57 is closed.

  In this way, as shown in FIG. 22, the first and second on-off valves K1, K3 are closed, and the sixth on-off valve K6 is opened.

  Then, the control device 200 drives and controls the electric blower 24 with medium level power (for example, about half of the strong level during normal cleaning). By this drive, the electric blower 24 generates a suction negative pressure, and this suction negative pressure acts in the filter chamber 81c via the bypass air passage 2500 (see FIG. 22), the filter PF, the dust separating means 55, and the return air passage 2511. To do. At this time, since the sixth on-off valve K6 is opened and the lid case 500 is not sealed and closed to the main body case 20, the outside air inlet 84F of the storage case 81 is shown in FIG. The outside air is introduced into the filter chamber 81c as shown by the arrow C1.

  In the dust removal mode of the pleated filter 104, the pleated filter body 100 is deformed forward by the suction negative pressure of the electric blower 24 acting on the filter chamber 81c, and the filter frame 100a of the pleated filter body 100 is formed on the step surface 81d. Therefore, when the pleated filter body 100 is rotated as described later by this contact, the frictional resistance due to this contact becomes the rotational resistance. This rotational resistance acts as a load on the meshing portion between the gear (not shown) around the lattice member 600 and the pinion 600b and the motor M1.

  It is desirable that the load acting on the meshing portion between the gear (not shown) and the pinion 600b around the lattice member 600 is not excessively large so as not to damage these teeth. Further, it is desirable that the load acting on the motor M1 is not overloaded to the small motor M1.

  On the other hand, for example, when the electric blower 24 is driven with a high level of power and when the electric blower 24 is driven with a medium level of power, the rotational resistance is much higher at the strong level than at the medium level. Become.

  Therefore, in the dust removal mode of the pleated filter 104 as described above, the electric blower 24 is driven and controlled with medium level power so that the rotational resistance caused by the contact between the filter frame 100a and the stepped surface 81d causes the electric blower 24 to have a high level. Therefore, the load acting on the meshing portion between the gear (not shown) around the lattice member 600 and the pinion 600b does not increase, and these teeth are not damaged. Further, by controlling driving of the electric blower 24 with medium level power, the load acting on the motor M1 does not overload the small motor M1.

  In addition, when the electric blower 24 is driven and controlled with a low level of power, the suction negative pressure of the electric blower 24 acting on the filter chamber 81c is reduced, and this suction negative pressure causes the outside air inlet 84F to enter the filter chamber 81c. The flow rate of the introduced outside air (cleaning air) is reduced, and the dust removal effect of blowing off dust adhering to the pleated filter 104 is reduced. However, when the electric blower 24 is driven and controlled with medium level power as described above, the suction negative pressure of the electric blower 24 acting on the filter chamber 81c does not become too small. The flow rate of the outside air (cleaning air) introduced into the filter chamber 81c from the air can be sufficiently secured as compared with the low level required for dust removal, and the dust removal effect for blowing off the dust adhering to the pleated filter 104 is also low. Compared to improvement.

  Thus, in the dust removal mode of the pleat filter 104, when the electric blower 24 is driven and controlled with medium power, the rotational resistance of the pleat filter body 100 does not become too large, and the outside air is introduced by the suction negative pressure of the electric blower 24. Since the flow rate of the outside air (cleaning air) introduced into the filter chamber 81c from the port 84F can also secure a speed necessary for dust removal of the pleated filter 104, the gears around the lattice member 600 and the teeth of the meshing portion of the pinion 600b Can be prevented, and the load on the motor M1 can be prevented from being overloaded, and the pleated filter 104 can be sufficiently dust-removed.

  On the other hand, as the rotation of the arm 2002 stops, the projection 2104 of the arm 2002 moves over the peak portion of the pleat filter 104 along with the rotation of the pleat filter 104. Striking and removing dust adhering to the pleated filter 104.

  At this time, since the outside air introduced from the outside air introduction port 84F hits the pleat filter 104 as cleaning air, the projection 2104 of the arm 2002 hits the peak of the pleat filter 104 to remove dust adhering to the pleat filter 104. Since the cleaning air blows off dust adhering to the surface of the pleat filter 104 in a floating state without falling from the pleat filter 104, the pleat filter 104 is cleaned with air.

  Moreover, since the second on-off valve K2 is opened by the outside air passing through the return air passage 2511 as shown in FIG. 25, the dust dropped from the pleat filter 104 by the projection 2104 or the washing air as described above is outside air. The outside air introduced from the inlet 84F returns to the separation chamber portion 54 of the dust separation portion 52 through the return air passage 2511.

  Further, the suction negative pressure of the electric blower 24 acts in the separation chamber portion 54 via the net filter NF1 and the bypass air passage 2500, and the dust chamber portion 73 is electrically driven via the net filter NF3 and the bypass air passage 2500. The suction negative pressure of the blower 24 is acting, and the separation chamber portion 54 and the dust chamber portion 73 have the same negative pressure. Accordingly, the outside air and dust introduced into the separation chamber portion 54 rotate counterclockwise in FIG. 10, and the dust and air are separated by inertia by this rotation, and among these, the separated dust is separated by inertia force. The dust is collected from the introduction opening 53A of the separation chamber portion 54 to the dust chamber portion 73 through the communication case portion 72 of the dust collection container 410.

  Further, the air separated from the dust passes through the net filter NF1 (see FIG. 12) of the dust separating means 55 close to the bypass air passage 2500 and the net filter NF2 (see FIG. 25) of the opening 154B, and further, the suction air passage portion 56. It is sucked into. The outside air sucked into the suction air passage portion 56 is sucked into the suction pipe 27 through the filter PF and the bypass air passage 2500, and further sucked into the suction opening 24A of the electric blower 24 and exhausted from the exhaust port 20H of the cleaner body 11. It will be done.

  Thus, since the fine dust dropped from the pleat filter 104 is returned to the separation chamber 54 of the dust separation part 52, it is prevented from adhering to the pleat filter 104 again.

  When the predetermined time has elapsed, the driving of the electric blower 24 is stopped and the lattice member 600 is reversely rotated by a predetermined angle. As shown in FIG. 21, the first on-off valve K1, the third on-off valve K3, and the fourth The on-off valve 28 is opened, and the second on-off valve K2, the fifth on-off valve 2502, and the sixth on-off valve K6 are closed. According to this embodiment, since the second on-off valve K2 is opened and closed by the air flow, the configuration can be simplified.

  Further, when removing the dust collection unit 50 from the dust collection unit chamber 22, the rear end of the storage case 81 presses the inclined guide portions 601 c and 601 d of the protrusions 601 provided on the lattice member 600 and the circular top portion 601 e. . Then, by this pressing, the protrusion 601 deflects the hinge portion 601b and is moved rearward (blower chamber side), and the rear end of the storage case 81 gets over the protrusion 601. In this manner, the dust collection unit 50 can be removed from the dust collection unit chamber 22 by the protrusion 601 getting over the rear end of the storage case 81.

  In the above-described embodiment, the hinge portion 601b is illustrated to have the same thickness as the plate portion 600A, but is not necessarily limited thereto. For example, as shown in FIG. 14E, by forming the recessed portion 601b1 in the hinge portion 601b, the thin portion 601b2 may be formed in the hinge portion 601b to make it easier to bend.

  In the embodiment described above, the example in which the linear inclined guide portions 601c and 601d are provided at the radial ends of the protrusions 601 has been described. However, the present invention is not necessarily limited thereto. For example, as shown in FIG. 4F, the inclined guide portions 601c and 601d may be formed in arcuate guide portions 601c ′ and 601d ′.

  As described above, the electric vacuum cleaner according to the embodiment of the present invention includes the electric blower 24 that causes the suction negative pressure to act on the main dust separation / collection means (dust separation unit 52, dust collection container 410, etc.), Control means (control device 200) for driving and controlling the electric blower 24, and input switching operation means (operation unit 13A) for switching the drive power of the electric blower 24 and switching the intake air amount to the electric blower 24. I have. The vacuum cleaner is provided in a storage chamber (filter chamber 81a) provided between the main dust separating / collecting means and the suction opening of the electric blower, and in the storage chamber (filter chamber 81a). A filtration separation part (pleat filter body 100) having a circular filter (pleated filter 104) that is airtightly fitted so as to be rotationally driven around the center line, and the filtration separation part (pleat filter body 100) are rotated. A driving means (motor M1) for driving and a cleaning air inlet (outside air inlet 84F) for introducing air as cleaning air immediately upstream of the filter (pleat filter 104) are provided. Further, in normal cleaning, the electric vacuum cleaner passes through the main dust separation / collection means (dust separation unit 52, dust collection container 410, etc.) and the filtration separation unit (pleat filter 104) to the electric blower 24. A first flow path to be sucked (air flow path indicated by arrows A1 to A3 in FIG. 21) is formed, and in the air cleaning of the storage chamber (filter chamber 81a), the cleaning air inlet (outside air inlet 84F). A second flow path (an air path including a return air path 2511, a bypass air path 2500, and the like) in which the introduced air is sucked into the electric blower 24 without passing through the filtration separation unit (pleat filter 104) is formed. Airflow control means (control device 200). In addition, the control means (control device 200) is a vacuum cleaner that controls the drive power so that the suction air volume of the electric blower 24 becomes a medium level when the dust filtration / separation unit (pleat filter 104) is washed with air. It is characterized by that.

  Thus, according to the present embodiment, the pleat filter 104 can be rotated at a rotation speed at which the dust removal efficiency does not decrease, and it is possible to prevent the cleaning efficiency of the pleat filter 104 from being reduced by the cleaning air during dust removal.

In the present embodiment, the outside air introduced from the outside air introduction port 84F is directly blown onto the pleated filter 104, but the present invention is not limited to this. That is, as an embodiment of the air cleaning, in addition to the above-described ones, the dust that floats in the space on the front side of the pleat filter 104 in the storage case 81 or the bottom of the storage case 81 is not sprayed directly on the pleat filter 104. This includes dust that is discharged out of the storage case 81 through the bottom opening 82A by the air flowing in from the outside air introduction port 84F. And also in this case, without increasing the rotational resistance of the pleated filter body 100 by appropriately setting the strength of the drive control of the electric blower 24 at the time of air cleaning within the above-mentioned range within the middle level, Dust can be discharged from the storage case 81.
In the present embodiment, the dust on the pleat filter body 100 is removed using the dust removing means 2100. However, the outside air introduced from the outside air introduction port 84F is directly blown onto the pleated filter 104 without using the dust removing means 2100. It is good only as well.

Further, the “medium level” is not necessarily limited to that set in the operation unit 13A. For example, the switch of the operation unit 13A has only “strong” and “weak” or “strong” and “automatic”, and the electric blower has a strength of 30 to 80% relative to “strong” at the time of air cleaning. Including those that control
The “medium level” is set in a relative relationship with the “strong level”.

  Further, in this embodiment, the dust remover 2104 moves over the peak portion of the pleated filter 104 and then the dust remover 2104 performs dust removal by hitting the peak portion. However, the present invention is not limited to this. For example, it may be configured such that the dust remover 2104 hits the holding frame of the pleated filter body 100 so that the vibration is transmitted to the pleated filter 104, and dust is removed from the pleated filter 104 by this vibration.

  Further, in this embodiment, the dust remover 2104 is in contact with the peak portion of the pleat filter 104 so that the rotation operation of the pleated filter body 100 is transmitted to the arm 2002 provided with the dust remover 2104. It is not something that can be done. For example, the rotation of the pleated filter body 100 may be transmitted to the arm 2002 by bringing the dust remover 2104 into contact with the holding frame of the pleated filter body 100.

  In the present embodiment, the pleat filter 104 is configured to radially form pleats, but is not limited thereto. As long as the rotation of the pleated filter body 100 can be transmitted to the arm 2002 and the third on-off valve K3, the direction of the pleats is not a radial direction, for example, only one direction or multi-direction is not excluded. . However, in consideration of transmitting the rotation operation to the arm 2002 and efficiently removing dust with the dust remover 2104, a radial one like this embodiment is preferable.

  Further, as described above, the electric vacuum cleaner according to the embodiment of the present invention includes the electric blower 24 that causes the suction negative pressure to act on the main dust separation / collection means (dust separation unit 52, dust collection container 410, etc.) , A control unit (control device 200) for driving and controlling the electric blower 24, and an input for switching the driving power of the electric blower 24 to switch the intake air amount to the electric blower between a strong level and a weak level. A circular filter chamber provided between the switching operation means (operation part 13A), the main dust separation / collection means (dust separation part 52, dust collection container 410, etc.) and the suction opening 24A of the electric blower 24. 81a, a circular pleat filter 104 that is airtightly fitted to the filter chamber 81a so as to be rotationally driven about its center line, and a driving means for rotationally driving the pleated filter 104 A motor M1), and a dust removing means 2100 for dust fine dust adhering to the pleated filter 104 by playing engage the folds of the pleated filter 104 during driving rotation of the pleated filter 104.

  Further, this vacuum cleaner has a suction main wind through which air passes through the main dust separation / collection means (dust separation unit 52, dust collection container 410, etc.) and the pleated filter 104 in this order and flows to the suction opening 24A of the electric blower 24. 21 and the main dust separating / collecting means (dust separating unit 52, dust collecting container 410, etc.) together with air, the fine dust dropped by the dust removing means 2100 and the air (shown by arrows A1 to A3 in FIG. 21) ) To return to the fine dust return air passage (return air passage 2511) and the suction main air passage (the air passage shown by arrows A1 to A3 in FIG. 21), and the air is separated and collected. The air is washed immediately upstream of the bypass air passage 2500 that flows from the means (dust separation unit 52, dust collecting container 410, etc.) to the suction opening 24A via the bypass filter (filter PF), and the pleated filter 104. And a washing air introducing air passage for introducing (outside air inlet 84F) as a.

  In addition, the vacuum cleaner includes a first on-off valve K1 that opens and closes a suction air passage (suction connection port 57A) to the main dust separation / collection means (dust separation unit 52, dust collection container 410, etc.); A second on-off valve K2 for opening and closing the fine dust return air passage (return air passage 2511), the main dust separation / collection means (dust separation portion 52, dust collection container 410, etc.) and the pleat filter 104; A third on-off valve K3 that opens and closes the suction air passage (connection opening 84A), and a fourth on-off valve 28 that opens and closes the suction flow air passage (opening 27A) between the pleated filter 104 and the suction opening 24A. And a fifth on-off valve 2502 for opening and closing the bypass air passage 2500, and a sixth on-off valve K6 for opening and closing the washing air introduction air passage (outside air introduction port 84F).

  In addition, at the time of cleaning, the first, third, and fourth on-off valves (K1, K3, K4) open the suction air passages (suction connection port 57A, connection opening 84A, opening 27A), respectively, and the second The fine dust return air passage (return air passage 2511), the bypass air passage 2500, and the washing air introduction air passage (outside air introduction port 84F) are closed by the fifth and sixth on-off valves (K2, 2502, K6), respectively. When removing the dust from the pleated filter 104, the first, third and fourth on-off valves (K1, K3, K4) close the suction air passages (suction connection port 57A, connection opening 84A, opening 27A), respectively. The fine dust return air passage (return air passage 2511), the bypass air passage 2500, and the cleaning air introduction air passage (outside air introduction port 84F) are respectively provided by the second, fifth, and sixth on-off valves (K2, 2502, K6). Let me open To have.

  Moreover, the control means (control device 200) controls the drive power so that the suction air volume of the electric blower 24 becomes a medium level when the pleat filter 104 is dedusted.

  According to this configuration, the pleat filter 104 can be rotated at a rotation speed at which the dust removal efficiency does not decrease, and it is possible to prevent the cleaning efficiency of the pleat filter 104 by the cleaning air during dust removal from decreasing.

It is the perspective view which showed the external appearance of the electric vacuum cleaner which concerns on this invention. It is the perspective view which showed the external appearance of the cleaner body of FIG. 1 which removed the cover case. It is a top view of the cleaner body shown in FIG. It is the perspective view which expanded some vacuum cleaner main bodies of Drawing 2 which removed a dust collecting container. It is explanatory drawing which showed the torsion coil spring 18 with which the cylindrical axle of the cleaner body was mounted | worn. It is explanatory drawing which showed the engagement relationship of the latching claw of a clamp, and the engaging member of a cover case. It is explanatory drawing which showed the pop-up mechanism of a dust collecting container. It is the top view which showed the clamp. It is explanatory drawing which showed cancellation | release of the lock | rock of a lid case, and cancellation | release of the lock | rock of a dust collection case. It is the perspective view which showed the external appearance of the dust collection unit. It is the perspective view which showed the external appearance of the dust collecting container. It is the cross-sectional view which showed the structure of the dust collection unit. It is the perspective view which showed the external appearance of the dust separation part. It is a cross-sectional view of a cleaner body. It is a schematic perspective view of the part of the latching protrusion shown in FIG. FIG. 14B is a plan view of FIG. 14A. It is sectional drawing which follows the B1-B1 line | wire of FIG. 14B. It is sectional drawing which follows the B2-B2 line | wire of FIG. 14B. It is principal part explanatory drawing which shows the modification of FIG. 14A. It is principal part explanatory drawing which shows the other modification of FIG. 14A. It is explanatory drawing which showed the state by which the dust collecting container was popped up. It is a side view of the cleaner body for explaining opening of a lid case. It is explanatory drawing which showed the state by which the dust collecting container was popped up. It is explanatory drawing which showed the dust removing means and the front wall part of a storage case. It is the perspective view which showed the structure of the opening / closing mechanism. It is the perspective view which showed the opening / closing mechanism and the dust separation part. It is the conceptual diagram which showed the air path at the time of performing normal cleaning. It is the conceptual diagram which showed the air path at the time of performing air washing. It is the horizontal sectional view which showed the structure of the dust separation part. It is explanatory drawing which showed the dust separation part and the return air duct. It is operation | movement explanatory drawing which showed the dust separation part and the return air duct. It is the perspective view which showed the external appearance of the dust separation part of FIG. It is the longitudinal cross-sectional view which showed the structure of the vacuum cleaner main body. It is the perspective view which showed the storage case shown in FIG. It is a rear view of the storage case shown in FIG. It is the perspective view which looked at the storage case shown in FIG. 29 from the diagonal front side. It is explanatory drawing which showed the arm with which the storage case was mounted | worn, and the 3rd on-off valve. It is the perspective view which showed the arm and the 3rd on-off valve. It is the perspective view which showed the external appearance of the dust collection unit which the 6th on-off valve opened. It is explanatory drawing which showed the 6th on-off valve and the external air inlet. It is the cross-sectional view which showed the structure of the dust removal means. It is a longitudinal cross-sectional view of the dust removal means shown in FIG. It is the block diagram which showed the structure of the control system.

Explanation of symbols

24 ... Electric blower 24A ... Suction opening 27A ... Opening (suction flow path)
28: Fourth open / close valve 52: Dust separator (part of main dust separator / collector)
57A ... Suction connection port (suction air passage)
84A ... Connection opening (suction air passage)
84F ... Outside air inlet (cleaning air inlet)
410 ... Dust collection container (part of main dust separation / collection means)
104... Pleated filter 200... Control device (control means)
2100 ... dust removal means 2500 ... bypass air passage 2502 ... fifth on-off valve 2511 ... return air passage (fine dust return air passage)
K1 ... 1st on-off valve K2 ... 2nd on-off valve K3 ... 3rd on-off valve K6 ... 6th on-off valve PF ... Filter (bypass filter)

Claims (1)

An electric blower that applies a suction negative pressure to the main dust separation / collection means, a control means that drives and controls the electric blower, and a switching operation that switches the drive power of the electric blower and switches the intake air amount to the electric blower Input switching operation means, a storage chamber provided between the main dust separation / collection means and the suction opening of the electric blower, and provided in the storage chamber and capable of being driven to rotate around its center line A filtration separation unit having a circular filter fitted in an airtight manner, a driving means for rotationally driving the filtration separation unit, a washing air introduction port for introducing air as washing air immediately upstream of the filter,
In normal cleaning, a first flow path is formed that passes through the main dust separation / collection means and the filtration / separation unit and is sucked into the electric blower. An airflow control means for forming a second flow path for sucking the introduced air into the electric blower without passing through the filtration separation unit,
The said control means controls the said drive electric power so that the suction | inhalation air volume of the said electric blower becomes a medium level at the time of the air washing of the said dust filtration separation part, The vacuum cleaner characterized by the above-mentioned.

Images