JP2009201568A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner wherein dust once removed is prevented from sticking to a pleated filter body again. <P>SOLUTION: An opening/closing body 61 for covering the downstream side of a mesh filter 60 when an electric blower is stopped is provided. The movement to the side of the mesh filter 60 of fine dust removed from the pleated filter body 73 by a dust removal means 75 is blocked by the opening/closing body 61 covering the mesh filter 60. The fine dust once removed from the pleated filter body 73 is prevented from passing through the mesh filter 60 again and sticking to the pleated filter body 73 again by the drive of the electric blower. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

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

Conventionally, this type of vacuum cleaner includes a vacuum cleaner body that houses an electric blower. In this vacuum cleaner main body, a cord reel wound with a power cord for supplying electric power to the electric blower is accommodated in the rear part, and communicates with the suction side of the electric blower and is a dust collecting device (dust collecting part). A dust collection cup is detachably provided on the whole. In addition, a pipe part that is sequentially provided with a hose body, an extension pipe, and a floor brush as a suction port body is detachably connected to the suction side of the dust collection cup. In the dust collection cup, a first dust collection unit and a second dust collection unit communicating with the suction port are separately defined inside a cup body having a suction port and an exhaust port. The first dust collecting unit is, for example, a dust collecting unit that collects coarse dust. An opening communicating with the upstream side of the exhaust port is provided on the downstream side of the second dust collecting unit, and a mesh filter is provided in the opening. Is provided. In addition, the second dust collecting unit is connected to the exhaust port on the downstream side, and a fine dust filter such as a pleat for collecting fine dust is attached to the exhaust port. The fine dust filter vibrates the fine dust filter at a predetermined timing, for example, when a power cord led out from the vacuum cleaner body is wound on a cord reel, and the fine dust collected in the fine dust filter is collected. A dust removing means for removing is provided. And the 3rd dust collection part which collects the fine dust removed by the dust removal means from the fine dust filter is divided by the cup main body under the fine dust filter (for example, refer patent document 1).
JP 2006-6406 A (page 7-8, FIG. 3-4)

  However, in the above vacuum cleaner, fine dust removed from the fine dust filter by the dust removing means may fall to the opening side, and the fine dust that has dropped to the opening side in this way causes the vacuum cleaner to be reopened. When activated, it has a problem of adhering to the fine dust filter.

  This invention is made | formed in view of such a point, and it aims at providing the vacuum cleaner which prevented the reattachment to the filter of the dust once removed.

  The present invention is provided on the suction side of the electric blower of the cleaner main body and located on the suction side of the electric blower of the cleaner main body and on the downstream side of the first filter, A second filter having a finer mesh than the first filter, dust removing means for removing dust collected by the second filter, and movement of dust removed from the second filter by the dust removing means to the first filter side. And blocking means for blocking.

  According to the present invention, the dust removed from the second filter by the dust removing means is prevented from moving to the first filter side by the preventing means, so that the dust once removed from the second filter is driven by the electric blower. It can be prevented from passing through the filter again and reattaching to the second filter.

  Hereinafter, the configuration of a vacuum cleaner according to an embodiment of the present invention will be described with reference to FIGS. 1 to 7.

  6 and 7, reference numeral 1 denotes a vacuum cleaner main body. The vacuum cleaner main body 1 includes a main body case 3 housing an electric blower 2 and a vertical direction in which a rear portion is pivotally supported by the main body case 3 so as to be rotatable. A lid 4 that can be opened and closed, and a dust collecting container 5 as a dust collecting device that is located on the upstream side of the electric blower 2 and can be attached to and detached from the main body case 3, and sucked together with the suction air generated by driving the electric blower 2 This is a so-called cyclonic vacuum cleaner that collects dust by centrifugal separation in a dust collecting container 5, and can travel on the floor as a surface to be cleaned.

  The main body case 3 accommodates a cord reel around a power cord (not shown) that enables power supply from a commercial AC power source (not shown) to the electric blower 2 and the like below the electric blower 2. A dish-shaped placement portion 8 is provided at the front portion of the main body case 3. The mounting portion 8 is a portion on which the dust collecting container 5 is detachably mounted, and when the lid 4 is closed, the dust collecting container 5 can be sandwiched and fixed between the lid 4.

  The lid 4 is provided with a tube portion 11 at the front portion, the front portion which is the tip portion of the tube portion 11 becomes a hose connection port 12 for sucking air, and the rear portion which is the base end portion of the tube portion 11 is A connection opening 13 communicates with the suction side of the dust collecting container 5 fixed to the mounting portion 8.

  The hose connection port 12 is connected to the base end portion of an elongated substantially cylindrical dust collection hose 15 that is flexible and bendable. At the tip of the dust collecting hose 15, a hand operating unit 16 capable of selecting the operation mode of the electric blower 2 is provided. The hand operating section 16 is provided with a gripping section 17 that is gripped by an operator, and the gripping section 17 is provided with a plurality of operation switches 18 for setting the electric blower 2 and the like to a plurality of operation modes. .

  In addition, a telescopic elongated cylindrical extension tube 21 is detachably connected to the distal end of the hand operation unit 16. Further, the extension pipe 21 is detachably connected to a suction port body 22 that is placed on, for example, a carpet on the floor of the room and is a floor brush that sucks dust on the carpet. Yes.

  As shown in FIGS. 1 to 5, the dust collecting container 5 includes a dust collecting container main body 25 as an apparatus main body, and a substantially circular air passage forming body 26 that can be attached to and detached from the upper portion of the dust collecting container main body 25. A bottom cover 27 as a dust collector lid that is pivotally supported at the bottom of the dust container main body 25 and a pleat filter part 28 as a fine dust separator that can be attached to and detached from the rear of the dust container main body 25 And.

  The dust collection container body 25 includes a wall 31 that forms an outer wall extending from the front part to both sides of the dust collection container 5, and an upper wall as an inclined wall part that blocks the upper part of the wall part 31 and continues in an inclined manner. A partition wall 33 as a partition wall part continuous to the inside of the wall part 31 below the part 32, the upper wall part 32, and a cylindrical shape continuous across the rear end part of the wall part 31 and the upper wall part 32 And a cylindrical wall portion 34 which is a rear wall portion. Then, between the upper portion of the upper wall portion 32 and the air passage forming body 26, a centrifugal separation portion 36 that is a cyclone separation portion that separates the sucked dust from the air is formed, and the front of the wall portion 31 and the partition wall 33 A dust collecting portion 37 that is a first dust collecting portion that accommodates the relatively large dust D1 separated by the centrifugal separator 36 is formed between the bottom lid 27 and the lower portion of the wall portion 31 and the upper wall portion 32. A negative pressure chamber portion 38 is formed between the rear portion of the partition wall 33 and a dust collection chamber for accommodating fine dust D2, which is relatively small dust, between the lower rear portion of the partition wall 33 and the bottom cover 27. A fine dust collecting part 39, which is the second dust collecting part, is formed, and an exhaust port 40 is formed inside the cylindrical wall part 34 so as to communicate with the downstream of the negative pressure chamber part 38 and to which the pleat filter part 28 can be attached and detached. Has been.

  A grip 41 for gripping the dust collecting container 5 is provided at the front of the wall 31. The lower end portion of the wall portion 31 is a waste opening 42 that communicates with the dust collecting portion 37 and can be opened and closed by the bottom lid 27. The disposal opening 42 allows the dust contained in the dust collecting portion 37 and the fine dust collecting portion 39 to be discarded outside the dust collecting container 5.

  The upper wall portion 32 forms the bottom surface of the centrifugal separation portion 36 and is formed to be inclined downward toward the front side. Accordingly, the centrifuge 36 is formed such that one side, that is, the left side shown in FIG. 5 has an upward slope from the upstream side to the downstream side, and the other side, that is, the right side shown in FIG. 5 has a downward slope from the upstream side to the downstream side. It is formed to become. The upper wall portion 32 is formed with a circular portion 43 having a circular shape in plan view formed along the outer shape of the air passage forming body 26, and along the circumference of the circular portion 43, the air passage forming body 26 is formed. A rib 44 that can be attached is projected upward. Further, the circular portion 43 has a circular ventilation opening 45 formed in the center thereof, and an opening 46 as a communication opening is formed on one side of the ventilation opening 45, and the ventilation opening. On the other side of 45, a dust collection portion introduction port 47 is formed as an introduction port for introducing dust into the dust collection portion 37.

  The ventilation opening 45 is provided with a dust separation part 51 as dust separation means. The dust separator 51 includes a frame 52 formed in a truncated cone shape, and a mesh filter 53 as a dust separator provided in an opening 52a of the frame 52. The centrifugal separator 36 and the negative pressure chamber 38 are communicated with each other through the opening 52a and the vent opening 45.

  The opening 46 communicates the centrifuge 36 and the negative pressure chamber 38, and is positioned near the inclined lower end of the upper wall 32, that is, at the upstream end of the centrifuge 36. The opening 46 is formed in a fan shape from the front side of the ventilation opening 45 of the circular portion 43 to the rear side of the ventilation opening 45, and is one side in the cleaner body 1, for example, the front-rear direction of the cleaner body 1. 5 is displaced to the left side shown in FIG. 5, in other words, to one side in the direction intersecting the suction direction of the electric blower 2. Further, the opening 46 is formed with a lattice rib 55 that partitions the opening 46 in a lattice shape, and a mesh filter 56 that is a dust separator as a filter.

  The dust collector inlet 47 communicates with the dust collector 37 on the downstream side of the centrifugal separator 36, and is located on the side of the opening 46 at the lowermost inclined end of the upper wall portion 32. The downstream end of the centrifugal separator 36 Part. Further, the dust collection part introduction port 47 is located on the right side shown in FIG. 5 with respect to the other side in the cleaner body 1, for example, the center line in the left-right direction along the front-rear direction of the cleaner body 1, that is, the suction direction of the electric blower 2 It is deviated to the other side in the direction intersecting with. In other words, the dust collection portion introduction port 47 is located on the side opposite to the opening 46 with respect to the left-right direction of the cleaner body 1. Further, an introduction plate 58 inclined at the front lower portion is extended to the dust collection portion 37 side at the rear end portion of the dust collection portion introduction port 47.

  The partition wall 33 includes a front wall 33a inclined slightly downward from the front side to the rear, an inclined wall 33b as a partition wall portion continuously inclined downward from the rear end portion of the front wall 33a, and the inclined wall. A lower wall 33c continuous downward from the lower end of 33b.

  In the inclined wall 33b, a large number of openings 59 are formed in the width direction as the first dust collection part openings as communication openings that communicate the downstream side of the dust collection part 37 with the negative pressure chamber part 38. Each is provided with a mesh filter 60 as a first filter as a dust separator, and at least a part of the mesh filter 60 is covered on the downstream side of these openings 59 (the right side in FIGS. 1 and 2). An opening / closing body 61 which is an opening / closing means as a blocking means is provided.

  The opening 59 is formed in a quadrangular shape and is partitioned by each rib 62.

  The mesh filter 60 is formed larger than the entire size of the opening 59, and the edge portion is bonded to the inclined wall 33 b outside the opening 59. That is, in the mesh filter 60, a filter surplus portion 60a positioned outward from the opening 59 is formed above the opening 59 in the inclined wall 33b, and the filter surplus portion 60a is not opposed to the opening 59. The opening 59 is communicated with and can be ventilated.

  In addition, a lower opening 63, which is a second dust collection portion opening as a dust collection chamber opening, is opened in a square shape at the rear of the lower wall 33c and below each opening 59 at the lower portion between the cylindrical wall portion 34 and the opening. It is formed and communicates with the upper part of the fine dust collecting part 39. That is, each lower opening 63 is formed corresponding to each opening 59. For this reason, the lower opening 63 is partitioned by ribs 64 formed along the front-rear direction across the partition wall 33 (the inclined wall 33b or the lower wall 33c) and the cylindrical wall portion. Further, these lower openings 63 can be opened and closed by an opening / closing body 61.

  The opening / closing body 61 is a rotating body formed in a plate shape having an area covering each opening 59 and each lower opening 63 by a lightweight member such as a synthetic resin, and the lower end portion is between the ribs 62, 62. The rotary shaft 61a is pivotally supported at a lower position of the inclined wall 33b and can be rotated in the front-rear direction. The opening / closing body 61 is urged in a direction to rotate upstream by a torsion spring as an urging means (not shown). These open / close bodies 61 are rotated downstream against the urging force of the torsion springs when the electric blower 2 is driven to open the openings 59 and the edges are in contact with the upper portions of the ribs 64. Each lower opening 63 is closed, and when the electric blower 2 is stopped, it is configured to come into contact with the inclined wall 33b by returning to its original state by the urging of the torsion spring, close each opening 59 and open each lower opening 63 Has been.

  Further, in the closed state, these open / close bodies 61 are inclined rearwardly downward along the inclination of the inclined wall 33b, and their lower end portions are directed toward the fine dust collecting portion 39. At least the downstream side surface of the opening / closing body 61 (the right side surface in FIG. 2), in this embodiment, the entire surface of the opening / closing body 61 is coated with fluorine, antistatic agent, photocatalyst, or the like to improve slippage. Yes. The opening / closing body 61 may be provided with a lightening portion or the like in order to reduce the weight.

  The cylindrical wall portion 34 is a rectangular tube shape having an axial direction along the front-rear direction, and protrudes substantially linearly toward the rear. Further, a claw portion 34a for locking the pleated filter portion 28 to the dust collecting container body 25 protrudes rearward from the upper outer surface of the cylindrical wall portion 34.

  The exhaust port 40 faces the circular intake port 65 communicating with the suction side of the electric blower 2 in a state where the dust collecting container 5 is attached to the main body case 3.

  Here, the intake port 65 is formed in a partition wall (not shown) located in front of the electric blower 2 and is located between the main body case 3 of the cleaner body 1 and the dust collecting container 5.

  The dust collection unit 37 collects dust D1 such as relatively large coarse dust such as cotton dust among the dust contained in the suction air.

  On the other hand, in the air passage forming body 26, a substantially circular protruding tube portion 67 that forms a substantially circular suction port 66 is located at the front end portion, and the rear end portion of the protruding tube portion 67 is clockwise in a plan view. A spiral portion 68 formed in a spiral shape in the direction is continuously formed, and a receiving projection 69 having a circular shape in plan view is formed at the center of the spiral portion 68.

  The protruding tube portion 67 is a portion that communicates with the hose connection port 12 through the connection opening 13 in a state where the dust collecting container 5 is attached to the main body case 3. For this reason, the suction port 66 is located substantially at the center in the left-right direction of the cleaner body 1, is an opening through which dust is sucked together with air by driving the electric blower 2, and in the vicinity of the downstream side of the suction port 66. The opening 46 is located.

  The spiral portion 68 has an arc shape with a cross-section projecting upward, and the downstream vertical dimension gradually decreases relative to the upstream projecting tube portion 67 side, and the downstream end projects. It is formed so as to enter the lower part of the pipe part 67. Therefore, the circumferential air passage portion W, which is defined between the spiral portion 68 and the dust collecting container body 25 and extends from the suction port 66 to the dust collection portion introduction port 47, has a downstream cross-sectional area of the upstream side. Specifically, the cross-sectional area is reduced from the suction port 66 to the dust collecting portion introduction port 47 so as to be smaller than the area.

  The housing projecting portion 69 is formed so that the upper end portion of the frame body 52 of the dust separating portion 51 is fitted.

  Further, the bottom cover 27 is pivotally supported by a hinge part 70 protruding from the rear end part so as to be rotatable at a lower part of the cylindrical wall part 34 of the dust collecting container body 25. The bottom lid 27 can be opened by operating a button 71 provided on the handle 41 of the dust collecting container 5. Further, on the upper portion of the bottom lid 27, a packing 72, which is a seal member pressed against the lower edge portion of the dust collecting container main body 25 with the bottom lid 27 closed, is attached.

  Further, the pleated filter section 28 includes a pleated filter body 73 that is a second filter as a dust separator and a frame body 74 that holds the pleated filter body 73, and is attached so as to close the exhaust port 40. .

  The pleat filter body 73 is formed such that pleat peaks and pleat valleys along the vertical direction are alternately continued in the left-right direction of the cleaner body 1, and has finer eyes than the mesh filter 60. Yes. Further, a dust removing portion 73a harder than the pleated filter body 73 is integrally provided at a rear portion of the pleated filter body 73, and a dust removing means 75 is disposed to face the dust removing portion 73a. Further, the pleated filter body 73 has an upper side inclined forward and an upstream side surface located above each lower opening 63.

  The frame body 74 is formed so as to surround the periphery of the pleated filter body 73, and is formed so that the outer shape is along the inner edge portion of the exhaust port 40. Further, the pleated filter body 73 is held by the frame body 74 so that the upper side is inclined forward, that is, upstream. Therefore, the fine dust collecting portion 39 is located below the upstream side surface of the pleated filter body 73 via the lower opening 63. In addition, an inclined surface 76 is formed below the pleated filter body 73 of the frame body 74 so as to incline downward toward the fine dust collecting portion 39 toward the front side and guide the fine dust D2 to the fine dust collecting portion 39. Has been. Further, a packing 77 as a seal member for closing a gap with the exhaust port 40 is attached around the frame body 74. A knob part 78 for gripping the pleated filter part 28 is provided on the upper part of the frame 74 so as to protrude, and the claw part 34a of the dust collecting container body 25 is inserted and locked to the knob part 78. An insertion hole 78a is formed.

  The dust removing means 75 has a reciprocating body (not shown) that can reciprocate in the left-right direction of the cleaner body 1 and a protrusion 79 provided integrally with the reciprocating body. By engaging the pleat peak shallowly and reciprocating the reciprocating moving body to the left and right, the projection 79 abuts against the dust removing part 73a and moves over the pleat peak, thereby giving vibration to the pleated filter body 73. Fine dust D2, which is dust adhering to the pleated filter body 73, is configured to drop onto the fine dust collecting portion 39 through each lower opening 63.

  The reciprocating body is controlled to reciprocate for a predetermined time at an arbitrary predetermined timing, for example, when driving of the electric blower 2 is stopped or when the electric blower 2 is started.

  Next, the operation of the above embodiment will be described.

  First, the lid body 4 is rotated upward to be opened, and the lid body 4 is rotated downward with the dust collecting container 5 to which the air path forming body 26 and the pleated filter section 28 are mounted placed on the placement section 8. The dust collecting container 5 is sandwiched between the lid 4 and the mounting portion 8.

  At this time, the suction port 66 of the dust collecting container 5 is hermetically connected to the connection opening 13 of the tube portion 11 of the lid 4, and the exhaust port 40 of the dust collecting container 5 and the pleats attached to the exhaust port 40. The filter unit 28 faces the intake port 65 of the electric blower 2.

  Next, the dust collecting hose 15, the extension pipe 21 and the suction port body 22 are sequentially connected to the hose connection port 12, and a power cord (not shown) is led out from the main body case 3 and connected to a commercial AC power source. The desired operation switch 18 is operated in a state where 17 is held, and the electric blower 2 is driven in a desired operation mode.

  As shown in FIG. 1, the opening / closing bodies 61 are rotated by the suction air generated by the driving to the rear against the urging force of the torsion spring as shown in FIG. When the body 61 contacts the rib 64, each lower opening 63 is closed and the fine dust collecting part 39 is sealed, so that the fine dust collected in the fine dust collecting part 39 is negatively pressured from the lower opening 63. The suction to the chamber 38 due to negative pressure is prevented. At this time, due to the impact of the opening / closing bodies 61 in contact with the ribs 64, dust or the like adhering to the downstream side surface of each opening / closing body 61 is shaken off into the fine dust collecting portion 39.

  In this state, the operator touches the suction port body 22 on the floor surface and travels forward and backward, and sucks dust on the floor surface together with air from the front end side.

  The sucked air becomes a suction air and passes from the suction port 66 of the dust collecting container 5 to the centrifugal separator 36 via the suction port body 22, the extension pipe 21, the dust collection hose 15, the hose connection port 12 and the connection opening 13. And sucked.

  This suction air travels linearly from the suction port 26 to the rear through the opening 46 (mesh filter 56) of the circular portion 43, that is, the swirling air swirling around the dust separating portion 51 together with most dust, that is, It is separated into a straight wind that goes straight.

  At this time, a part of the swirling wind passes through the opening 52a and flows into the negative pressure chamber 38, and dust is collected by the mesh filter 53 during this passage, and the remaining part is Along with the upper wall portion 32, most of the dust is sucked into the dust collecting portion 37 from the dust collecting portion introduction port 47.

  Of the dust contained in the swirling wind that has flowed into the dust collecting portion 37, relatively large coarse dust falls into the dust collecting portion 37 and is collected as it is. When the fluid passes through the opening 59 and flows into the negative pressure chamber 38, it is collected by the mesh filter 60. In this way, the dust D1 is collected in the dust collecting portion 37.

  On the other hand, the straight wind hardly contains dust, but slightly contained dust passes through the pleated filter body 73 of the pleated filter part 28 via the negative pressure chamber part 38, and at the time of this passage, Fine dust that has not been collected by the mesh filter 56 is collected in the pleated filter body 73.

  Both the swirling wind and the straight wind that have passed through the pleated filter body 73 are exhausted from the exhaust port 40 to the outside of the dust collecting container 5 and then sucked into the electric blower 2 from the intake port 65. It passes through and becomes exhaust air, and is exhausted to the outside of the cleaner main body 1 through an exhaust hole (not shown) formed in the main body case 3.

  When the cleaning is completed and the operator operates the operation switch 18 to stop the driving of the electric blower 2 and the suction air is stopped, each opening / closing body 61 is torsioned around the rotation shaft 61a as shown in FIG. Each lower opening 63 is opened by rotating forward by the bias of the spring and covering and closing each opening 59.

  In this state, the dust removing means 75 is driven, and the projection 79 reciprocates in the left-right direction, so that the fine dust adhered to the pleated filter body 73 by the projection 79 is reduced from the pleated filter body 73 through the lower opening 63. Drop to the dust collector 39.

  At this time, the opening / closing body 61 prevents the fine dust from passing through the mesh filter 60 from the downstream side to the upstream side, i.e., the dust collecting portion 37 side, and the fine dust dropped to the downstream side surface of the opening / closing body 61 is Along the inclination of the opening / closing body 61, the fine dust collection unit 39 is guided through the lower opening 63 and collected by the fine dust collection unit 39.

  Thereafter, the operator opens the lid 4 by rotating the lid 4 upward, removes the dust collecting container 5 from the main body case 3, and then opens the bottom lid 27 by pressing the button 71 on a trash can, for example. From the disposal opening 42, the dust D1 in the dust collector 37 and the fine dust D2 in the fine dust collector 39 are discarded.

  Further, the air passage forming body 26 is removed from the dust collecting container body 25, and the mesh filters 53, 56 and the like are cleaned.

  Further, the pleat filter unit 28 is removed from the dust collection container body 25, and the mesh filter 60 is cleaned, or the fine dust D2 removed from the pleat filter body 73 is cleaned of what is attached to the dust collection container body 25. Or

  And after returning the air path formation body 26 and the bottom cover 27 to the original state, the dust container 5 is attached to the main body case 3 again and used.

  As described above, according to the above embodiment, the opening / closing body 61 covering the mesh filter 60 prevents the fine dust D2 removed from the pleated filter body 73 by the dust removing means 75 from moving toward the mesh filter 60 side. Thus, it is possible to prevent the fine dust D2 once removed from the pleated filter body 73 from passing through the mesh filter 60 again by driving the electric blower 2 and reattaching to the pleated filter body 73.

  Specifically, the opening / closing body 61 opens and closes the downstream side of the mesh filter 60 by the suction air of the electric blower 2 and covers the downstream side of the mesh filter 60 by the stop of the suction air accompanying the stop of the electric blower 2. Therefore, regardless of the opening area of each opening 59 to which the mesh filter 60 is attached, the fine dust D2 removed from the pleated filter body 73 does not pass through the mesh filter 60 from the downstream side to the upstream side. The opening area can be made relatively large, and the suction performance can be ensured.

  Further, the open / close body 61 opens and closes the lower opening 63 of the fine dust collecting portion 39 in response to the opening and closing of the downstream side of the mesh filter 60, so that the fine dust collected by the fine dust collecting portion 39 is opened. It is possible to reliably prevent D2 from being sucked up by negative pressure and reattaching to the pleated filter body 73 when the electric blower 2 is driven (when the mesh filter 60 (opening 59) is opened).

  In addition, by using a mechanism that opens and closes the lower opening 63 corresponding to the opening and closing of the downstream side of the mesh filter 60 by the same opening and closing body 61, the configuration is simplified compared to the case where these means are provided separately. it can.

  Specifically, the opening / closing body 61 is formed as a rotating body whose lower end is pivotally supported above the lower opening 63 positioned below the mesh filter 60 so as to cover the lower opening 63, thereby opening and closing the blocking means. A configuration that also serves as the means can be easily formed.

  Furthermore, since the pleated filter body 73 is inclined upward to the front and faces the lower opening 63, the fine dust D2 removed from the pleated filter body 73 by the dust removing means 75 is almost certainly transferred to the lower opening 63. Can lead.

  In addition, since the mesh filter 60 is provided on the inclined wall 33b, the upper side is inclined forward, so that dust D1 such as cotton dust pressed against the upstream surface side of the mesh filter 60 by the suction air is collected in the dust collecting portion 37. The mesh filter 60 can be prevented from being clogged.

  Further, the mesh filter 60 collects dust in the filter surplus portion 60a when air is released from the filter surplus portion 60a even if the portions facing the openings 59 are gradually clogged. The time for continuous use can be extended without maintenance.

  Since the opening / closing body 61 is coated on at least the downstream side surface to improve the slip, the fine dust D2 removed from the pleated filter body 73 is less likely to adhere to the opening / closing body 61.

  In the above-described embodiment, the fine dust D2 removed from the pleated filter body 73 by the dust removing means 75 may be collected in the air passage or the like without being collected in the fine dust collecting portion 39.

  Further, although a plurality of openings 59 and a plurality of lower openings 63 are provided, one each may be provided. In this case, the opening / closing bodies 61 are also provided one by one.

  Furthermore, an opening / closing means for opening / closing the lower opening 63 corresponding to the opening / closing of the mesh filter 60 downstream by the opening / closing body 61 may be provided separately from the opening / closing body 61.

  The blocking means may be of any configuration as long as it can block the movement of fine dust D2 toward the mesh filter 60, for example, by fixing an eaves-like member above the mesh filter 60 instead of the opening / closing body 61. Is possible.

  The dust collecting container 5 may use any dust separation method other than the cyclone separation.

  Furthermore, the vacuum cleaner is not only provided with the dust collection container 5, but also provided with a dust removing means for disposing the second filter on the downstream side of the first filter and removing the dust collected by the second filter. If it is a thing, it can be used correspondingly.

  And the said structure can be used corresponding to various vacuum cleaners, such as an upright type, a handy type, or an autonomous running type.

It is a longitudinal cross-sectional view which shows the principal part in the drive state of the electric blower of the vacuum cleaner of one embodiment of this invention. It is a longitudinal cross-sectional view which shows the principal part in the state at the time of the stop of the electric blower of a vacuum cleaner same as the above. It is a perspective view which shows the principal part of a vacuum cleaner same as the above from back. It is a top view which shows a part of dust collection part of a vacuum cleaner same as the above. It is a perspective view which shows a part of dust collection part of a vacuum cleaner same as the above from the front. It is a perspective view which shows the vacuum cleaner main body of a vacuum cleaner same as the above. It is a perspective view which shows a vacuum cleaner same as the above.

Explanation of symbols

1 Vacuum cleaner body 2 Electric blower
39 Fine dust collection part as a dust collection chamber
60 Mesh filter as the first filter
61 Opening / closing body as opening / closing means as blocking means
63 Lower opening as dust collection chamber opening
73 Pleated filter body as second filter
75 Dust removal means

Claims (5)

A vacuum cleaner body containing an electric blower,
A first filter provided on the suction side of the electric blower of the cleaner body;
A second filter that is provided on the suction side of the electric blower of the cleaner body and on the downstream side of the first filter; the second filter is finer than the first filter;
Dust removing means for removing dust collected in the second filter;
An electric vacuum cleaner comprising: blocking means for blocking movement of dust removed from the second filter by the dust removing means toward the first filter. The blocking means operates so as to open at least part of the downstream side of the first filter by the suction air of the electric blower and cover at least part of the downstream side of the first filter by stopping the suction air. The vacuum cleaner according to claim 1. The blocking means can open and close at least a part of the downstream side of the first filter,
A dust collection chamber having a dust collection chamber opening through which dust removed from the second filter by the dust removing means passes, and collecting the dust that has passed through the dust collection chamber opening;
The vacuum cleaner according to claim 2, further comprising opening / closing means for opening / closing the dust collection chamber opening corresponding to the opening / closing of the blocking means. The vacuum cleaner according to claim 3, wherein the opening / closing means is the same member as the blocking means. The dust collection chamber opening is located below the first filter,
5. The electric vacuum cleaner according to claim 4, wherein the blocking means is a rotating body whose lower end is pivotally supported so as to be rotatable above the dust collection chamber opening and covers the dust collection chamber opening.

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