JP2008289661A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner for surely removing dust caught by a pleated filter. <P>SOLUTION: Air is introduced to the upstream side of the pleated filter 104 by an outside air-introducing mechanism when stopping an electric blower. The air introduced by the outside air-introducing mechanism is introduced into groove portions of the pleated filter 104 by a covering portion 185 positioned adjacent to the upstream side of the pleated filter 104 and partially covering the pleated filter 104. The dust caught by the pleated filter 104 is surely removed from the pleated filter 104. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner that removes dust collected by a filter.

Conventionally, this type of vacuum cleaner includes a vacuum cleaner body that houses an electric blower. The vacuum cleaner main body includes a first air passage and a second air passage that are branched downstream of the main body suction port and communicated with the suction side of the electric blower, and are configured to collect dust in the first air passage. A filter is disposed in the chamber, and a paper pack as a dust collecting portion is disposed in the second air passage. In addition, a switching valve that selectively connects one of the first air path and the second air path to the suction side of the electric blower is movably provided in the cleaner body. And this vacuum cleaner collects dust in a dust collection chamber by letting the air which let the 1st air passage side communicate with the suction side of an electric blower at the time of normal cleaning, and let it pass through a filter. At the end of cleaning, etc., the second air passage side is connected to the suction side of the electric blower, and the air introduced from the outside of the cleaner body is passed from the downstream side to the upstream side of the filter to backwash the filter. In addition, the dust collected in the dust collecting chamber is moved to the paper pack and collected together with the dust removed from the filter (see, for example, Patent Document 1).
Japanese Examined Patent Publication No. 4-55699 (page 4, FIGS. 1 and 2)

  However, the above-described electric vacuum cleaner has a problem in that it is not easy to reliably remove dust adhering to the filter by air that is passed when the filter is backwashed.

  This invention is made | formed in view of such a point, and it aims at providing the vacuum cleaner which can remove reliably the dust collected by the pleat filter.

  The present invention has a plurality of grooves recessed from the upstream side to the downstream side, a pleat filter that collects dust by driving an electric blower, and air introduction that guides air to the upstream side of the pleat filter in a predetermined condition A mechanism and a cover provided near the upstream side of the pleat filter and for guiding the air guided by the air introduction mechanism into the groove portion are provided.

  According to the present invention, the air guided to the upstream side of the pleat filter by the air introduction mechanism is guided into the respective groove portions of the pleat filter by the cover portion, and the dust collected on the pleat filter can be reliably removed.

  Hereinafter, the structure of the vacuum cleaner of the 1st Embodiment of this invention is demonstrated with reference to FIG. 1 thru | or FIG.

  3 to 5, reference numeral 1 denotes a vacuum cleaner body, and the vacuum cleaner body 1 is a so-called canister-type vacuum cleaner. The vacuum cleaner main body 1 has a main body case 2 and a lid 3 provided on the upper portion of the main body case 2 so as to be opened and closed.

  The main body case 2 includes a lower case 5 formed in a longitudinal shape in the front-rear direction and an upper case 6 attached to the upper side of the lower case 5, and an electric blower chamber 8 that houses the electric blower 7 is a rear portion. And a dust collection chamber 10 in which a dust collection unit 9 as a main dust collection unit is detachably mounted is formed at the front, and a partition wall portion is provided between the electric blower chamber 8 and the dust collection chamber 10. 14 is arranged.

  A large-diameter driven wheel 16 (only one is shown) is rotatably supported on both sides on the rear side of the lower case 5. A swivel wheel 17 is pivotally supported on the lower surface of the lower case 5 below the dust collection chamber 10 so as to be swivelable. As a result, the cleaner main body 1 can travel on the floor surface to be cleaned by the driven wheel 16 and the swivel wheel 17.

  An electric blower 7 is disposed in the electric blower chamber 8 in the front-rear direction, with the suction side as the front side and the exhaust side as the rear side. Further, a control means (not shown) for controlling the driving of the electric blower 7 and the like is accommodated above the electric blower 7 in the electric blower chamber 8. Further, the electric blower chamber 8 has a plurality of exhaust holes 18 formed therein.

  The dust collection unit 9 includes a paper pack 21 that is a dust collection bag as a dust collection unit, and a paper pack holder 22 as a dust collection bag holder that is detachably held in the dust collection chamber 10 by holding the paper pack 21 in a removable manner. And have.

  The paper pack 21 includes a mouth frame 25 in which a pack opening 24 as an opening is formed, and a bag body 26 attached to the mouth frame 25.

  The mouth frame 25 is formed in a plate shape with thick paper such as cardboard.

  The bag body 26 is formed, for example, by laminating a plurality of filter media, which are air permeable materials, into a bag shape, folded in an unused state, and spreads below the paper pack holder 22 in the dust collecting chamber 10 in the used state. It is configured as follows.

  On the other hand, the paper pack holder 22 has a holder main body 28 that holds the mouth frame 25 of the paper pack 21, and a handle 29 that protrudes from one main surface side of the holder main body 28. It can be attached to the edge.

  The holder body 28 is formed in a substantially plate shape, and an opening 31 that communicates with the pack opening 24 of the paper pack 21 is formed in the center. Further, on the main surface of the holder main body 28 opposite to the handle 29, a groove portion (not shown) is formed which is inserted and slid or slid.

  The handle 29 is composed of base portions 45 and 45 that are pivotally supported on both sides of the opening 31 of the holder main body 28, and a connection portion 46 that connects the base portions 45 and 45, respectively. A button 47 as an operation unit for operating a part of the groove and removing the paper pack 21 from the holder main body 28 is provided at a connection position between the base 45 and the base 45. The handle 29 is attached with a torsion spring (not shown) at the base end of the base portion 45 and is biased in a direction in which the connection portion 46 is separated from the holder main body 28, and is acute with respect to the holder main body 28, that is, less than 90 °. It is comprised so that the angle of may be made.

  The partition wall portion 14 includes a partition wall body 51 and a drive mechanism 52 provided on the partition wall body 51.

  The bulkhead body 51 is a wall-like member that partitions the electric blower chamber 8 and the dust collection chamber 10 and is connected to the suction side of the electric blower 7 so that the suction side of the electric blower 7 communicates with the dust collection chamber 10. A communicating tube portion 54 is formed at a position closer to the lower side. In addition, an outside air introduction port 55 that is an air introduction port that communicates the electric blower chamber 8 and the lid 3 side is formed at a position near the upper side of the partition wall main body 51. Further, at a position between the communication cylinder portion 54 and the outside air introduction port 55 in the vertical direction, a partition wall portion 57 is projected substantially horizontally toward the front side which is the dust collection chamber 10 side. A lower space 57 serves as a lower space 58, and an upper side of the partition wall 57 serves as an upper space 59.

  The partition wall 57 is formed with a space communication port 61 that allows the lower space 58 and the upper space 59 to communicate with each other.

  In the lower space 58, a filter 63 facing the downstream side of the paper pack 21 is disposed.

  The upper space 59 is provided with a dust removing mechanism 65 for removing dust on the lid 3 side. The dust removing mechanism 65 is configured to reciprocate along the left-right direction by the drive mechanism 52.

  The drive mechanism 52 switches between opening and closing of the outside air introduction port 55 and the space communication port 61, and includes a motor 71 rotated by a control means (not shown) and a gear portion 72 driven by the rotation of the motor 71. And an inlet opening / closing valve 73 that opens and closes the outside air inlet 55 driven by the gear portion 72, and a communication opening / closing valve 74 that opens and closes the space communication opening 61.

  The motor 71 is located in the electric blower chamber 8.

  The gear portion 72 is a gear train in which various gears pivotally supported on the electric blower chamber 8 side or the dust collection chamber 10 side of the partition wall main body 51 are engaged with each other, and are connected to the inlet opening / closing valve 73 and the communication port. The on-off valve 74 is connected to each via a crank mechanism, and the on-off valves 73 and 74 are configured to operate in the vertical direction in conjunction with each other.

  The inlet opening / closing valve 73 is located on the rear side of the outside air inlet 55.

  The communication port opening / closing valve 74 is formed in a horizontally long plate shape, and one long side is pivotally supported on the upper part of the base end side of the partition wall portion 57 so as to be rotatable.

  As shown in FIGS. 1 to 4, the lid 3 opens and closes the upper side of the dust collection chamber 10, and is pivotally supported by the upper case 6 so that the rear portion can be rotated in the vertical direction. . The lid 3 includes a lid lower plate 81 that forms a lower surface, a lid upper plate 82 that forms an upper surface, and a partition plate 83 attached to the inside of the lid lower plate 81. An insertion tube portion 84 is attached to a substantially central portion of the plate 81. In addition, a mounting recess 86 is formed in an inclined manner toward the front upper side on the front side of the lid upper plate 82, and an annular suction port member 88 that opens the main body suction port 87 rotates in the mounting recess 86. A ring 89 is attached as a holding member that is attached in a possible manner and holds the outer peripheral edge portion of the suction port member 88 with the attachment recess 86.

  The lid lower plate 81 is formed with a cylindrical lower plate cylinder portion 91 that forms a dust separation portion in the center region in the front-rear direction, and the lower end portion of the lower plate cylinder portion 91 is airtight to the upper portion of the insertion cylinder portion 84. It is connected to the. Further, a ventilation opening 92 is formed in the rear portion of the lower plate cylinder portion 91, and a mesh filter 93 is attached to the ventilation opening 92. Further, the lid lower plate 81 is formed with an upper inclined portion 94 inclined upward and a lower plate portion 95 spaced apart and positioned below the upper inclined portion 94 at the rear of the lower plate cylinder portion 91. A space portion 96 communicating with the ventilation opening 92 is formed between the upper inclined portion 94 and the lower plate portion 95, a lid body opening portion 97 is opened at the rear portion of the space portion 96, and the lid body. A mounting plate 98 is attached to the opening 97. In addition, the attachment plate 98 has a lid air vent 101 formed on the lower side, and an introduction opening 102 formed above the lid air vent 101. A packing 103 as a seal member for airtight connection with the dust collection chamber 10 is attached to the lower edge portion of the lid lower plate 81.

  A pleated filter 104, which is a surface dust collection filter as a filter, is attached to the lid vent 101 and is located in the space 96. The pleated filter 104 has a plurality of groove portions (not shown) that are recessed from the upstream side to the downstream side and that extend in the vertical direction, and these groove portions are sequentially formed in the left-right direction, thereby forming a so-called pleated shape. In addition, the pleated filter 104 is disposed such that the upper side is inclined forward so that the upstream surface faces downward.

  An introduction opening on-off valve 106 is attached to the introduction opening 102 so as to be rotatable in the front-rear direction. The introduction opening on / off valve 106 is configured to open only by air passing from the rear to the front of the introduction opening 102. The introduction opening 102, together with the outside air introduction port 55, the introduction port opening / closing valves 73 and 106, and the like, allows the outside air to flow upstream of the pleat filter 104 when predetermined conditions are satisfied, for example, when cleaning is stopped and the operation of the vacuum cleaner is stopped. An outside air introduction mechanism 107, which is an air introduction mechanism for collecting dust adhering to the upstream side surface of the pleated filter 104 by flowing to the side surface, is configured. Hereinafter, the outside air refers to air located outside the air passage, and does not necessarily mean air outside the cleaner body 1.

  Further, the lid upper plate 82 has an insertion hole 121 formed substantially at the center of the mounting recess 86, and a plurality of contact plates 122, for example, three main body side contacts are attached around the insertion hole 121. It has been. In addition, an insertion tube portion 123 that communicates with the main body suction port 87 and protrudes from the suction port member 88 is inserted into the insertion hole 121 in an airtight manner, and this introduction tube portion 123 is connected to the lower plate tube portion 91 in an airtight manner. Has been.

  Further, a connecting pipe 141a, which is a downstream end portion of the hose body 141, is inserted into and connected to the main body suction port 87, and a cylindrical hand operating portion 142 is integrally provided on the distal end side of the hose body 141. In addition, an extendable extension pipe 143 and a floor brush 144 serving as a suction port body are sequentially connected to the distal end portion of the hand operation unit 142. Further, the hand operating unit 142 is provided with a gripping part 145 that grips during cleaning, and the gripping part 145 includes a driving state of an electric blower or an electric part (not shown) provided in the floor brush 144. A plurality of setting buttons 146 for setting the driving state and the like are provided. The floor brush 144, the extension pipe 143, and the hose body 141 constitute a pipe portion 147 for sucking dust from the floor surface by driving the electric blower 7.

  The suction port member 88 is configured to rotate integrally following the rotation of the pipe portion 147 connected to the main body suction port 87. In addition, a plurality of, for example, three slip rings 164, which are sliding contacts serving as suction port member side contacts corresponding to the contact plate 122, are formed concentrically on the portion of the suction port member 88 facing the mounting recess 86. ing.

  Here, the slip ring 164 is for connecting the electric part in the floor brush 144, which is an electric part on the hand operation part 142 and the pipe part 147 side, and the cleaner body 1 side, and is a conductive metal. Etc., and is configured to be in contact with the tip of the contact plate 122 and electrically connected to each other.

  The partition plate 83 includes an upper plate 171 and a lower plate 172 spaced downward with respect to the upper plate 171. The partition plate 83 is attached in the space 96 and is located between the upper plate 171 and the lower plate 172. In addition, an upper air passage 173 as a first air passage is defined, and a lower air passage 174 as a second air passage is defined between the lower plate 172 and the lower plate portion 95 of the lid lower plate 81. ing. Further, the partition plate 83 has a square hole shape as a first air passage opening that communicates with the upper air passage 173 and that faces the front side that is the upstream side of the pleated filter 104 at the center in the left-right direction at the rear end. An upper opening 175 is formed, and below the upper opening 175, a second wind is formed as a square hole-shaped opening that communicates with the lower air passage 174 and faces the front side that is the upstream side of the pleated filter 104. A lower opening 176 that is a road opening is formed.

  Further, an upper air passage opening / closing valve 181 as a first air passage opening / closing valve that opens and closes the upper air passage 173 is attached to the partition plate 83 below the upper plate 171 so as to be rotatable in the front-rear direction. A lower air passage opening / closing valve 182 as a second air passage opening / closing valve for opening / closing the lower air passage 174 is attached to the lower portion of the lower plate 172 so as to be rotatable in the front-rear direction.

  The upper air passage opening / closing valve 181 is configured to open only by air passing through the upper air passage 173 from the front to the rear, and the lower air passage opening / closing valve 182 passes through the lower air passage 174 from the rear to the front. It is configured to open only by the air that does.

  A plate-like cover portion 185 that covers a part of the pleated filter 104 is provided at the rear portion of the partition plate 83.

  The cover 185 disperses the air sucked through the upper air passage 173 throughout the pleat filter 104 and guides the outside air introduced by the outside air introduction mechanism 107 to the groove portion of the pleat filter 104. 1, a cover body 186 having an outer edge along the inner wall of the space 96 from the top to the bottom of the partition plate 83 in the space 96, and the center of the cover body 186 in the left-right direction And a cover piece 187 projecting downward from the lower end of the part, and is formed in a substantially T shape in front view. Accordingly, cover opening 188 and 188 are formed on both sides of the cover piece 187 at the lower end of the cover 185, respectively. The cover portion 185 is disposed at a position close to the front portion of the pleat filter 104. For example, the cover portion 185 faces the front portion of the pleat filter 104 at a predetermined distance from the front portion of the pleat filter 104. ing.

  The cover body 186 is formed in a flat plate shape along the front portion of the pleat filter 104, has a width dimension larger than the width dimension of the pleat filter 104 in front view, and is 3/4 or less from the upper side of the pleat filter 104. It is formed so as to cover the portion, and is disposed at a position facing the entire upper opening 175.

  The cover piece 187 is disposed at a position facing the lower opening 176 and has a width dimension substantially equal to that of the lower opening 176. The cover piece 187 is in contact with the lid lower plate 81 at the lower end.

  Each cover opening 188 is formed such that the air sucked from the upper opening 175 and the outside air introduced by the outside air introduction mechanism 107 are dispersed and formed in a horizontally long rectangular shape, and each covers both sides of the cover 185. The notch is formed.

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

  First, when cleaning is started, the lid 3 is opened, the mouth frame 25 of the paper pack 21 is inserted between the groove portions of the holder main body 28 of the paper pack holder 22, and the paper pack 21 is attached to the paper pack holder 22.

  Thereafter, the paper pack holder 22 is mounted in the dust collection chamber 10 and the lid 3 is closed.

  At this time, the lower surface of the lid lower plate 81 of the lid 3 pushes down the handle 29 of the paper pack holder 22 against the bias, and the handle 29 becomes substantially parallel along the holder body 28. The insertion tube portion 84 is inserted into the pack opening 24 of the paper pack 21, and the downstream side surface of the groove portion of the pleat filter 104 is fitted with the dust removing mechanism 65. Further, the outside air introduction port 55 and the introduction opening 102 Are airtightly connected. At the same time, the packing 103 at the bottom of the lid 3 is brought into pressure contact with the peripheral edge of the dust collection chamber 10 to close the dust collection chamber 10 in an airtight state.

  Then, the operator inserts and connects the connecting pipe 141a of the hose body 141 to the main body suction port 87 of the lid 3 and sequentially connects the extension pipe 143 and the floor brush 144 to the distal end side of the hose body 141. .

  Further, when the operator grips the grip portion 145 and sets the operation mode of the electric blower 7 by the setting button 146 and starts the operation of the electric vacuum cleaner, the operator operates the electric blower 7 in the set operation mode, and the floor brush 144 is moved back and forth on the floor surface, and dust on the floor surface is sucked from the front end side of the floor brush 144.

  In this suction state, the introduction opening / closing valve 73 is closed by the drive mechanism 52 and the communication opening / closing valve 74 is opened.

  For this reason, the air sucked from the front end side of the floor brush 144 by the action of the negative pressure by driving the electric blower 7 is sucked into the main body suction port 87 through the extension pipe 143 and the hose body 141, and the lower plate cylinder portion 91 Is branched to the paper pack 21 side and the pleated filter 104 side via the upper air passage 173, and the branched air merges at the space communication port 61 and then from the communication tube portion 54 to the electric blower 7. The air is sucked, passes through the electric blower 7 and becomes exhaust air, and is exhausted from the exhaust hole 18.

  Specifically, of the dust contained in the air, coarse dust travels straight through the lower plate cylinder portion 91 due to inertia and is collected into the paper pack 21 via the insertion cylinder portion 84 and passes through the paper pack 21. The fine dust contained in the air is collected by the filter 63, and the air in which the dust is collected is sucked into the electric blower 7 from the lower space portion 58 through the communication tube portion. On the other hand, among the dust contained in the air, fine dust is branched to the ventilation opening 92 side by the lower plate cylinder portion 91 and collected by the mesh filter 93, and the fine dust that has passed through the mesh filter 93 is collected. Flows into the space 96 from the upper air passage 173 and the upper opening 175, collides with the cover main body 186 of the cover 185, and is dispersed into the cover openings 188, 188. After passing, the air collected by the pleated filter 104 and collected dust flows from the upper space 59 into the lower space 58 through the space communication port 61 and is electrically driven from the communication cylinder portion 54. It is sucked into the blower 7.

  When the cleaning is finished, when the operator stops the operation mode of the electric blower 7 with the setting button 146, the control unit operates the drive mechanism 52 via the motor 71 to drive the dust removal mechanism 65. Then, the pleat filter 104 is flipped left and right, the inlet opening / closing valve 73 is opened, and the communication opening / closing valve 74 is closed.

  For this reason, the fine dust collected by the pleat filter 104 falls on the lid lower plate 81 by the operation of the dust removing mechanism 65, and the air in the electric blower chamber 8 passes through the introduction opening 102 from the outside air introduction port 55. It flows into the space part 96, is guided to each groove part of the pleated filter 104 by the cover part main body 186 in this space part 96, and passes through the upstream side surface of these groove parts from the upper side to the lower side, and then the cover piece part By the action of 187, it passes through the lower air passage 174, the insertion cylinder part 84, the paper pack 21, the lower space part 58 and the communication cylinder part 54 through the cover part openings 188, 188, and is sucked into the electric blower 7. Fine dust collected on the pleat filter 104 and dust removed from the pleat filter 104 by the dust removing mechanism 65 are collected in the paper pack 21.

  And a control means stops the electric blower 7 after predetermined time passes.

  In this way, by providing the cover portion 185 so as to face the upstream side surface of the pleat filter 104, the air guided to the upstream side of the pleat filter 104 by the outside air introduction mechanism 107 collides with the cover portion 185 and is dispersed. By being guided into each groove portion of the filter 104 and reliably flowing outside air over the entire upstream side surface of the pleated filter 104, dust collected in the pleated filter 104 can be reliably removed, and the removed dust can be removed from the paper pack 21. Can be collected.

  In particular, in a vacuum cleaner that uses a paper pack as the dust collector, if the fine dust is directly sucked into the paper pack, the paper pack is immediately clogged by the fine dust before the dust is sufficiently collected in the paper pack. In the first embodiment, fine dust is once collected in a pleated filter 104 different from the paper pack 21 and the outside air is introduced. By configuring the mechanism 107 to return to the paper pack 21 containing coarse dust to some extent, it is possible to prevent fine dust from clogging the paper pack 21 due to this coarse dust, and the dust collection capacity of the paper pack 21 Can be used efficiently.

  Further, by providing the cover piece portion 187 of the cover portion 185 at a position facing the lower opening 176, the outside air guided by the outside air introduction mechanism 107 is moved to a position other than the vicinity of the lower opening 176 by the cover portion openings 188 and 188. The fine dust collected on the pleated filter 104 can be more reliably removed by spreading outside air to the groove of the entire pleated filter 104 and spreading it.

  Furthermore, by sharing the paper pack 21 that collects coarse dust as a dust collection unit that collects fine dust removed from the pleated filter 104, the configuration can be simplified and the paper pack 21 can be simply discarded or replaced. Therefore, all the dust collected by the vacuum cleaner can be discarded, and the maintainability is also improved.

  Then, by providing the cover body 186 of the cover 185 at a position facing the upper opening 175, the air sucked by driving the electric blower 7 is moved to a position other than the vicinity of the upper opening 175 by the cover openings 188 and 188. The entire pleated filter 104 can be efficiently used for collecting fine dust.

  Next, a second embodiment will be described with reference to FIG. In addition, about the structure and effect | action similar to the said 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the second embodiment, in the first embodiment, the cover body 186 of the cover 185 is formed to be bent forward.

  That is, the cover body 186 protrudes forward from a position slightly above the pleat filter 104 so as to be separated from the pleat filter 104, and is positioned above the center position in the vertical direction of the pleat filter 104. The pleated filter 104 is bent back so as to approach the pleated filter 104 and has a curved shape.

  For example, when cleaning is finished, when the outside air is guided from the rear to the front by the outside air introduction mechanism 107 to the upstream side of the pleat filter 104, the outside air is pleated along the curved cover body 186 of the cover 185. The fine dust collected from the upstream side surface of the pleat filter 104 or the fine dust removed from the pleat filter 104 by the driving of the dust removing mechanism 65 Dust or the like is moved from the cover opening 188, 188 into the paper pack 21 through the lower opening 176, the lower air passage 174, and the insertion cylinder 84.

  Thus, according to the second embodiment, by having the same configuration as the first embodiment, not only can the same effects as the first embodiment be achieved, By projecting the cover portion 185 in a direction away from the pleat filter 104 and curving, the outside air introduced to the upstream side of the pleat filter 104 by the outside air introduction mechanism 107 is bent so as to be folded back by the curved shape of the cover portion 185. Thus, it can be more reliably guided to each groove.

  In each of the above embodiments, the shape of the cover 185 is arbitrary as long as it covers at least a part of the pleat filter 104 and guides the outside air guided by the outside air introduction mechanism 107 into the groove of the pleat filter 104. Can be set.

  Further, as the dust collecting unit, besides the paper pack 21, it can be used in correspondence with, for example, a dust collecting cup, and in addition to using the dust collecting unit for collecting coarse dust as described above, You may make it provide the dust collection part which collects fine dust separately.

  Furthermore, each of the drive mechanism 52 and the dust removal mechanism 65 is not limited to the above-described configuration.

  In the case where, for example, an opening communicating with each groove is formed on the pleated filter 104, the cover 185 may be brought into contact with the front surface of the pleated filter 104.

  Further, the predetermined condition for introducing the outside air by the outside air introduction mechanism 107 can be arbitrarily set, for example, immediately after the start of cleaning or when a predetermined time has elapsed since the start of cleaning.

  Furthermore, the details of the vacuum cleaner are not limited to the above configuration, and the vacuum cleaner is not limited to the canister type, for example, an autonomously traveling (robot type) vacuum cleaner or a handy type is also supported. Can be used.

It is a front view which shows the cover part vicinity of the cover of the vacuum cleaner of the 1st Embodiment of this invention. It is a longitudinal cross-sectional view which shows the same cover body from a side surface. It is a longitudinal cross-sectional view which shows a vacuum cleaner same as the above from the side. It is a perspective view which shows the state which opened the cover body same as the above. It is a perspective view which shows a vacuum cleaner same as the above. It is a front view which shows the cover part vicinity of the cover body of the vacuum cleaner of the 2nd Embodiment of this invention.

Explanation of symbols

1 Vacuum cleaner body 7 Electric blower
21 Paper pack as a dust collector
104 Pleated filter
107 Outside air introduction mechanism as air introduction mechanism
176 Lower opening as opening
185 Cover

Claims (2)

A vacuum cleaner body containing an electric blower,
A pleat filter that includes a plurality of grooves recessed from the upstream side to the downstream side, and that collects dust by driving the electric blower;
An air introduction mechanism for guiding air to the upstream side of the pleat filter at a predetermined condition;
An electric vacuum cleaner comprising: a cover portion provided close to the upstream side of the pleat filter and for guiding the air guided by the air introduction mechanism into the groove portion. A dust collecting unit for collecting dust removed from the pleated filter by air guided by the covering unit;
Comprising an air passage between the pleat filter and the dust collecting part, and comprising an opening for allowing the air guided by an air introduction mechanism to pass to the dust collecting part,
The vacuum cleaner according to claim 1, wherein at least a part of the cover is provided at a position facing the opening.

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