JP2005131135A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner which can suppress a reduction in suction force by an electric blower. <P>SOLUTION: This vacuum cleaner is constituted in such a manner that an air passage switching means 71 which can selectively switch air passages to either one of a main air passage W1 and a subsidiary air passage is provided. At the time of a normal cleaning, the main air passage W1 is selected, and dust and dirt are collected by a main dust collecting chamber 35, and when dust and dirt are accumulated in the main dust collecting chamber 35, the main air passage W1 is switched to the subsidiary air passage by the air passage switching means 71, and dust and dirt collected in the main dust collecting chamber 35 can be moved to a subsidiary dust collecting chamber 36. Therefore, the reduction in suction force by the electric blower 7 resulting from the accumulation of dust and dirt in the main dust collecting chamber 35 can be suppressed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electric vacuum cleaner including a main dust collecting unit that collects dust separated from air sucked together with dust by driving an electric blower.

Conventionally, this type of vacuum cleaner includes a vacuum cleaner body that houses an electric blower. A plurality of filters communicating with the suction side of the electric blower are provided in the cleaner body. In addition, a filter switching means for selectively switching the filter is provided in the cleaner body. And by using a some filter selectively, clogging of a filter is prevented (for example, refer to patent documents 1).
Japanese Patent No. 3085827 (page 2-3, FIG. 1)

  However, the above-described electric vacuum cleaner has a problem that when each filter is clogged, the suction force by the electric blower is reduced.

  This invention is made | formed in view of such a point, and it aims at providing the vacuum cleaner which can suppress the fall of the suction force by an electric blower.

  The present invention forms a main air passage communicating with the main body inlet and the suction side of the electric blower, and forms a part of the main air passage, and collects dust separated from the air sucked together with dust by driving the electric blower. A main dust collecting part that dusts, an auxiliary air passage that communicates with at least the main dust collecting part and the suction side of the electric blower, and forms a part of the auxiliary air passage, and collects in the main dust collecting part. An auxiliary dust collecting section that can store at least a part of the dust that has been dusted, and an air path switching means that can selectively switch either the main air path or the auxiliary air path. Then, the main air passage communicating with the main body inlet and the suction side of the electric blower, and at least the auxiliary air passage different from the main air passage communicating with the main dust collecting portion and the suction side of the electric blower are selected by the air passage switching means. In normal cleaning, dust is collected in the main dust collecting part that forms a part of the main air path, and when dust accumulates in this main dust collecting part, the air path switching means It is also possible to switch to the auxiliary air path and move at least a part of the dust contained in the main dust collecting part to the auxiliary dust collecting part, and the suction force by the electric blower when dust accumulates in the main dust collecting part To prevent the loss of

  According to the present invention, the main air passage and the auxiliary air passage are selectively switched by the air passage switching means, so that during normal cleaning, dust is collected at the main dust collecting portion, and this main dust collecting portion is collected. When dust accumulates, at least a part of the dust contained in the main dust collecting section can be moved to the auxiliary dust collecting section by switching to the auxiliary air path using the air path switching means, and the dust collected in the main dust collecting section. It is possible to prevent the suction force from being reduced by the electric blower due to the accumulation of air.

  Hereinafter, the configuration of a vacuum cleaner according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6.

  4 to 6, reference numeral 1 denotes a vacuum cleaner main body. The vacuum cleaner main body 1 is a so-called cyclone type electric vacuum cleaner that collects dust by centrifugal separation by swirling the sucked-in air. The vacuum cleaner body 1 includes a lower case 2, a middle case (not shown) attached to the upper side of the lower case 2, an upper case 4 attached to the lower case 2 and the middle case by closing the rear portion of the middle case. And the main body case 6 provided with the cover body 5 which covers the front upper part of a middle case so that opening and closing is possible. Further, an electric blower 7 is accommodated between the middle case and the upper case 4 of the main body case 6.

  And on the front side of the lower case 2, there is provided a cup holding portion 12 which is a bottomed cylindrical space in which a turning wheel 11 is turnably and rotatably attached to the bottom portion. The upper side of the cup holder 12 is covered with the lid 5. A pair of traveling wheels 13 that are rotatable along the front side and the rear side in the traveling direction of the main body case 6 are respectively attached to both sides of the lower case 2 on the rear side. As a result, the cleaner body 1 can travel on the floor as the surface to be cleaned.

  Further, on the front side of the lid body 5, a main body suction port 14 that opens toward the front is provided. A base end of a flexible hose body 15 communicates with the main body suction port 14 and is detachably connected. A hand operation unit 16 capable of selecting an operation mode of the electric blower 7 is provided at the tip of the hose body 15. The hand operating unit 16 is provided with a plurality of setting buttons 17 for setting the driving state of the electric blower 7 and the like in the cleaner body 1 to a predetermined state, and a grip that an operator grips when cleaning. The part 18 protrudes from the proximal end side. In addition, an elongated, substantially cylindrical extension tube 21 that can be expanded and contracted is detachably connected to the distal end of the hand operation unit 16. Furthermore, a floor brush 22 serving as a suction port for sucking dust on the carpet is detachably connected to the tip of the extension pipe 21, for example, installed on a carpet on the floor of the room. .

  Further, between the lower case 2 and the upper case 4, a cord reel 24 is accommodated in a cord reel chamber (not shown) partitioned by an intermediate case. The cord reel 24 is wound with a power cord (not shown) for supplying power for driving the electric blower 7 from the outside. The power cord is led out from a cord port (not shown) provided at the rear portion of the lower case 2 so as to be drawn out of the main body case 6. Furthermore, a plug portion (not shown) that is detachably inserted into an outlet (not shown) provided on a wall surface or the like is provided at the tip of the power cord.

  The cup holder 12 is provided with a dust collection cup 33 that functions as a dust separator and is a dust collector. The dust collecting cup 33 is connected to the communication cylinder portion 34 with the suction side communicating with the main body suction port 14 with the dust collection cup 33 attached to the cup holding portion 12, and with the main dust collection fluid communicating with the downstream side of the communication cylinder portion 34. Main dust collection chamber 35 as a part, sub dust collection chambers 36 as auxiliary dust collection units provided on both sides of the main dust collection chamber 35, and a handle that enables an operator to grip the dust collection cup 33 A portion 37 is provided.

  As shown in FIGS. 1, 2, 4, and 5, the communication cylinder portion 34 is provided in a pipe shape, is located above the main dust collection chamber 35, and projects horizontally along the front-rear direction. .

  The main dust collection chamber 35 collects dust separated in the dust collection cup 33 from the air sucked together with dust by driving the electric blower 7, and is used for normal cleaning. The main dust collection chamber 35 is provided in a longitudinal shape in the vertical direction at the rear portion on the exhaust side of the communication tube portion 34, and is positioned substantially perpendicular to the communication tube portion 34 downward. The main dust collection chamber 35 is a space that is expanded downward by a rear wall 41 of the dust collection cup 33 that is inclined downward toward the rear. Further, the rear wall 41 is formed with a square hole-shaped rear communication hole 42. The main dust collection chamber 35 communicates with the suction side of the electric blower 7 through the rear communication hole 42.

  Further, the rear communication hole 42 is provided with a main filter 43 as a mesh filter. The main filter 43 collects fine dust, that is, fine dust that could not be collected in the main dust collection chamber 35 from the suction air passing from the main dust collection chamber 35 to the suction side of the electric blower 7. It is attached to a filter attachment body 44 formed in a lattice rib shape, and is detachably attached to the rear communication hole 42 so as to close the entire rear communication hole 42 by the filter attachment body 44. Further, the upper end of the main filter 43 is located below the lower end of the communication tube portion 34.

  In addition, a throttle valve 45 as an air path throttle mechanism is provided behind the communication cylinder portion 34, which is the upper part in the main dust collection chamber 35. The throttle valve 45 is formed in a semi-cylindrical shape curved in a convex arc shape on the upper side, and is provided so as to be rotatable along the vertical direction. Further, the throttle valve 45 has a lower end portion located in the central region in the vertical direction of the communication tube portion 34. The throttle valve 45 is positioned substantially coaxially with the communication tube portion 34 in a normal state, and restricts the air passing from the communication tube portion 34 to the main dust collecting chamber 35 while rotating downward. The dust that is sprayed on the filter 43 and collected by the main filter 43 is blown off.

  Further, each dust collection chamber partition wall 47 that divides the main dust collection chamber 35 and the sub dust collection chamber 36 is formed with a side hole 48 having a round hole shape. These side portion communication holes 48 are located slightly below the lower end portion of the communication tube portion 34. The main dust collection chamber 35 and the sub dust collection chamber 36 communicate with each other through the side communication holes 48.

  The sub dust collection chamber 36 is used only in a timely manner, and is located on both sides of the main dust collection chamber 35. Further, as shown in FIG. 3, a square hole-shaped sub-communication hole 51 is provided in the lower part of the sub-dust collection chamber 36 so as to penetrate the rear wall 41. The sub dust collection chamber 36 communicates with the suction side of the electric blower 7 through the sub communication hole 51. Further, a mesh-like sub filter 52 is provided in the sub communication hole 51.

  In the lower part of the dust collection cup 33, as shown in FIGS. 1, 2, 4 and 5, the lower ends of the main dust collection chamber 35 and the sub dust collection chamber 36 can be opened and closed simultaneously. A lower lid portion 53 is provided. The lower lid portion 53 is provided so as to be rotatable in the front-rear direction with respect to the dust collection cup 33.

  The handle portion 37 is located below the main body suction port 14 with the dust collection cup 33 attached to the cup holding portion 12. The handle portion 37 is provided with an operation button (not shown) that opens and closes the lower lid portion 53.

  A fitting wall portion 55 projects rearward from the rear wall 41 of the dust collecting cup 33. The fitting wall portion 55 is provided in a square frame shape surrounding the rear communication hole 42, and the upper side protrudes upward in the upward direction with respect to the dust collection cup 33, and the lower side protrudes horizontally. ing. Further, the filter portion 58 is fitted in the fitting wall portion 55 in a state where the dust collection cup 33 is attached to the cup holding portion 12.

  The filter portion 58 is provided by attaching the pleated filter 61 to the attachment frame body 62. The pleated filter 61 collects fine dust contained in the suction air that has passed through the main filter 43 and is provided in a longitudinal shape along the vertical direction of the cleaner body 1, and along the width direction of the cleaner body 1. Thus, the cleaner body 1 is provided in a so-called pleated shape that is alternately curved in the front-rear direction. The attachment frame 62 is provided in a substantially square frame shape, and holds the pleat filter 61 in a detachable manner.

  The filter unit 58 is located between the partition wall 65 and the dust collection cup 33 provided in the cleaner body 1 and is disposed in the cleaner body 1.

  The partition wall 65 is located in front of the electric blower 7 and partitions the electric blower chamber 66 that houses the electric blower 7 and the cup holding portion 12. The partition wall 65 is formed with a plurality of ventilation holes 67 communicating with the cup holding part 12 and the electric blower chamber 66 in a lattice shape, and the whole ventilation hole 67 is formed in a substantially circular shape facing the entire filter part 58. ing. In addition, a substantially circular front protrusion 68 that surrounds the periphery of the vent hole 67 protrudes from the front of the partition wall 65. The front projecting portion 68 is airtightly abutted at the front end portion, which is the front end portion, on the rear portion of the attachment frame body 62 of the filter portion 58.

  Further, a substantially circular rear protrusion 69 surrounding the vent hole 67 is provided at the rear of the partition wall 65. The rear end portion, which is the front end portion of the rear projecting portion 69, is in airtight contact with the front portion of the air path switching means 71 located at the front portion of the electric blower 7.

  The air path switching means 71 is a front air path case 72 with which the front part of the rear protrusion 69 abuts, a rear air path case 74 that is attached to the rear part of the front air path case 72 and forms an air path 73 inside, An air path switching valve 75 as switching means accommodated in the air path 73 and a motor 76 as rotating means connected to the air path switching valve 75 are provided.

  The front air passage case 72 has a circular air passage case main body 81 that is circular when viewed from the front. Is provided. Further, a pair of duct portions 83 are integrally provided at the lower portion of the air passage case main body portion 81. The front air passage case 72 has a peripheral edge projecting toward the rear, and forms an air passage 73 between the front air passage case 74 and the rear air passage case 74.

  The air passage case main body 81 has a circular hole-shaped front air hole 85 formed coaxially in the center. The front air hole 85 faces the air hole 67.

  The shaft support accommodating portion 82 is provided in a substantially triangular shape with an upper end portion having an acute angle when viewed from the front. In addition, an upper end portion of the air path switching valve 75 is pivotally supported by the shaft support accommodating portion 82 so as to be rotatable along the width direction of the cleaner body 1.

  The duct portion 83 is provided to be inclined so as to expand from the lower side of the air passage case main body portion 81 to both sides in the width direction downward. Sub-air ducts 86 project from the front ends of these duct portions 83 toward the front.

  These sub air ducts 86 are provided in a substantially rectangular tube shape, and are connected to the exhaust side of the sub communication hole 51 of each sub dust collection chamber 36 in a state where the dust collection cup 33 is attached to the cup holding portion 12. . The sub air duct 86 communicates with the air path 73.

  The rear air passage case 74 includes a main body closing portion 91, a shaft supporting closing portion 92, and a duct closing portion 93 corresponding to the air passage case main body portion 81, the shaft support housing portion 82 and the duct portion 83 of the front air passage case 72. Is provided. The main body closing portion 91, the shaft support closing portion 92, and the duct closing portion 93 have substantially the same outer shapes as the air passage case main body portion 81, the shaft support housing portion 82, and the duct portion 83, respectively. The entire rear part is blocked. Further, a rear air hole 94 is formed in the central portion of the main body closing portion 91 coaxially with the main body closing portion 91. The rear air hole 94 has an outer diameter dimension substantially equal to that of the front air hole 85, is coaxial with the front air hole 85, and communicates with the air path 73.

  The air path switching valve 75 includes a cylindrical valve main body 95, and a shaft support portion 96 that protrudes narrower in the upward direction is provided on the upper portion of the valve main body 95, and on the side of the valve main body 95. In addition, a closing plate portion 97 which is a tongue-shaped ladle portion is protruded.

  The valve body 95 has an inner diameter dimension substantially equal to that of the front air hole 85 and the rear air hole 94. Further, the valve body 95 has a front end portion in airtight contact with the rear portion of the front air passage case 72 and a rear end portion in airtight contact with the front portion of the rear air passage case 74. For this reason, the inside of the valve body 95 is partitioned with respect to the air passage 73.

  The shaft support part 96 is formed in a substantially triangular shape with an acute end at the upper end in plan view. The shaft support portion 96 is provided with a smaller width dimension than the air passage case main body 81 of the front air passage case 72. That is, the shaft support portion 96 has a clearance in the width direction of the front air passage case 72. A shaft support hole 98 into which a rotating shaft (not shown) of the motor 76 is press-fitted is formed in the upper end portion of the shaft support portion 96 along the front-rear direction. The shaft support hole 98 serves as a shaft when the air passage switching valve 75 rotates with respect to the front air passage case 72 and the rear air passage case 74.

  The closing plate portion 97 is provided substantially flush with the front end portion of the valve main body 95 and abuts against the rear portion of the front air passage case 72 in an airtight manner. The closing plate portion 97 is provided in a substantially square shape when viewed from the front. Further, the closing plate portion 97 has a larger area than the front air hole 85, and can block the entire front air hole 85.

  The motor 76 rotates the air path switching valve 75 along the width direction of the cleaner body 1, and is provided at the rear part of the rear air path case 74. It is inserted into an insertion hole (not shown) formed in the portion 92 and press-fitted into the shaft support hole 98 of the air path switching valve 75.

  Then, the communication cylinder portion 34, the main dust collecting chamber 35, the rear communication hole 42, the vent hole 67, the front air hole 85, the valve main body 95 and the rear air hole 94 are connected to the suction side of the electric blower 7 from the main body suction port 14. A main air passage W1 is formed as a main air passage communicating therewith.

  Further, the main body suction port 14 is constituted by the communication cylinder portion 34, the main dust collection chamber 35, the side communication hole 48, the sub dust collection chamber 36, the sub communication hole 51, the sub air duct 86, the air duct 73, and the rear air hole 94. To the suction side of the electric blower 7, a sub air passage W2 as an auxiliary air passage different from the main air passage W1 is formed.

  The main air path W1 and the sub air path W2 can be selectively switched by the air path switching means 71.

  Further, the throttle valve 45 rotates in the vertical direction in conjunction with the switching of the main air passage W1 and the sub air passage W2 by the air passage switching means 71.

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

  First, the dust collection cup 33 is attached to the cup holding part 12, and the hose body 15, the extension pipe 21, and the floor brush 22 are sequentially connected to the main body suction port.

  In this state, the power cord is led out from behind the lower case 2 and the plug portion of the power cord is inserted into an outlet provided on a wall surface or the like.

  Thereafter, the operator holds the hand operation part 16 of the hose body 15 and turns on a predetermined setting button 17 of the hand operation part 16 to drive the electric blower 7 so that the floor brush 22 is moved on the floor surface. Run back and forth to inhale dust on the floor and clean it.

  During normal cleaning, the main air passage W1 is selected by the air passage switching means 71 as shown in FIG.

  Then, the air sucked together with dust from the floor brush 22 becomes a suction wind, and sequentially passes through the extension pipe 21, the hose body 15 and the main body suction port 14 and then flows into the communication cylinder portion 34.

  In the communication tube portion 34, the inertia force in the straight traveling direction is applied to the dust along the axial direction of the communication tube portion 34, whereby the dust and the suction air are separated, and the separated dust is stored in the main dust collecting chamber 35. Dust is collected inside.

  Further, fine dust that is included in the suction air and not separated into the main dust collection chamber 35 is collected when the suction air passes through the main filter 43 and the pleat filter 61 of the rear communication hole 42.

  Thereafter, the suction air flows into the electric blower 7 through the vent hole 67, the front air hole 85, the valve main body 95, and the rear air hole 94 to become exhaust air, and from the electric blower 7 to the outside of the cleaner main body 1. Is exhausted.

  On the other hand, when the operator finishes the cleaning, for example, when the electric blower 7 is stopped by pressing a predetermined setting button 17, as shown in FIG. By rotating in one direction, the air path switching means 71 switches to the sub air path W2.

  At this time, the throttle valve 45 rotates downward in conjunction with the air path switching means 71.

  In this state, the suction air that has flowed into the communication cylinder portion 34 is blown to the main filter 43 with the flow velocity increased by the throttle valve 45, and the dust adhering to the main filter 43 is blown off from the main filter 43 to be collected in the main dust. The dust falls into the chamber 35 and flows into the sub dust collection chamber 36 from the side communication hole 48 together with relatively light dust housed in the main dust collection chamber 35.

  For this reason, relatively light dust housed in the main dust collection chamber 35 is moved to and accommodated in the sub dust collection chamber 36 by the suction air, and the suction force on the main air passage W1 side is restored.

  Further, in the sub dust collection chamber 36, the dust sucked into the sub dust collection chamber 36 is compressed by the suction air and is collected by the sub filter 52 when passing through the sub communication hole 51.

  The suction air flows into the electric blower 7 through the sub air duct 86, the air duct 73, and the rear air hole 94 to become exhaust air, and is exhausted from the electric blower 7 to the outside of the cleaner body 1. .

  Thereafter, when the suction force on the main air passage W1 side is restored, the air passage switching valve 75 is rotated by the motor 76 to the other side in the width direction of the cleaner body 1, whereby the air passage switching means 71 causes the main air passage W1 to rotate. Then, the electric blower 7 is stopped and cleaning is finished.

  Further, when a predetermined amount or more of dust has accumulated in the main dust collection chamber 35 and the sub dust collection chamber 36, the dust collection cup 33 is removed from the vacuum cleaner main body 1, and the handle portion is placed on a dust bin (not shown), for example. Open the lower lid 53 by operating the operation button 37, and simultaneously drop each dust in the main dust collection chamber 35 and the sub dust collection chamber 36 into the trash can for disposal, and then clean the dust collection cup 33 again. Used by attaching to the main body 1.

  As described above, in the above-described embodiment, either the main air passage W1 or the sub air passage W2 is selectively switched by the air passage switching means 71.

  Therefore, during normal cleaning, the main air passage W1 is selected and collected in the main dust collection chamber 35, and when dust accumulates in the main dust collection chamber 35, the air passage switching means 71 The dust collected in the main dust collecting chamber 35 can be moved to the sub dust collecting chamber 36 by switching to the air path W2.

  As a result, the main dust collection chamber 35 used for normal cleaning and the sub dust collection chamber 36 that moves and accommodates dust only when dust accumulates in the main dust collection chamber 35 are divided into roles. By controlling the amount of dust accumulated in the main dust collecting chamber 35, the pressure loss on the main air passage W1 side, which has a large influence on the suction work rate of the electric blower 7, is improved, and the suction force by the electric blower 7 is reduced. Can be suppressed, the suction power can be improved, and the predetermined suction performance can be maintained over a long period of time.

  In addition, the throttle air can be easily and surely prevented from being clogged by restricting the suction air from the main body suction port 14 by the throttle valve 45 and blowing it to the main filter 43 and blowing away the dust collected by the main filter 43. .

  In addition, since the structure is relatively simple by merely rotating the throttle valve 45, the productivity can be improved.

  Further, the communication between the main dust collecting chamber 35 and the suction side of the electric blower 7 is cut off by interlocking the rotation of the throttle valve 45 with the switching of the main air passage W1 and the sub air passage W2 by the air passage switching means 71. In this state, the suction air can be blown to the main filter 43. For this reason, since the suction air can be blown in a state in which the dust collected in the main filter 43 is prevented from being attracted to the main filter 43 by the suction force of the electric blower 7, dust adhering to the main filter 43 is further reduced. It can surely be blown off with the suction air.

  Further, by providing the side communication hole 48 at a position closer to the upper side of the dust collection chamber partition wall 47, only relatively light dust out of the dust collected in the main dust collection chamber 35 is sublimated from the side communication hole 48. It can be moved to the dust collection chamber 36. As a result, it is possible to prevent relatively heavy dust from accumulating in the sub dust collection chamber 36 and to prevent the function of the sub dust collection chamber 36 that accommodates part of the dust collected in the main dust collection chamber 35 from being impaired. .

  Furthermore, the sub dust collection chambers 36 are provided on both sides of the main dust collection chamber 35, and the main dust collection chamber 35 and the sub dust collection chamber 36 can be opened and closed simultaneously by the lower lid 53. Dust stored in the dust collection chamber 36 can be discarded at a time, and usability can be improved.

  Then, by switching between the main air passage W1 and the sub air passage W2 at the end of the cleaning, the cleaning can be started with the suction force on the main air passage W1 side being restored at the next cleaning, and the usability can be further improved.

  In the above embodiment, the air path switching means 71 may switch between the main air path W1 and the sub air path W2 during a predetermined time at the start of cleaning.

  Alternatively, the main air passage W1 and the sub air passage W2 are automatically detected when, for example, a current value flowing through the electric blower 7 or a suction pressure is detected by a sensor (not shown) or the like and becomes smaller than a predetermined threshold value set in advance. Switching may be performed at any timing, such as switching automatically or manually by the operator.

  Further, the throttle valve 45 can be configured to be manually operated from the outside of the cleaner body 1 without interlocking with the switching of the main air passage W1 and the sub air passage W2 by the air passage switching means 71. . In this case, the internal configuration can be further simplified, the productivity can be improved, and the manufacturing cost can be suppressed.

  Furthermore, the vacuum cleaner can be used not only in a canister type but also in an upright type.

It is a disassembled perspective view which shows the communication state of the main wind path by the vacuum cleaner of one embodiment of this invention. It is a disassembled perspective view which shows the communication state of the auxiliary wind path by a vacuum cleaner same as the above. It is a perspective view which expands and shows a part of electric vacuum cleaner same as the above. It is a perspective view which notches and shows a part of electric vacuum cleaner same as the above. It is a longitudinal cross-sectional view which shows 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 7 Electric blower
14 Main unit inlet
35 Main dust collection chamber as main dust collection unit
36 Sub-dust collection chamber as auxiliary dust collection section
43 Main filter as a filter
45 Throttle valve as air path throttle mechanism
71 Air path switching means
W1 Main wind path as main wind path
W2 Sub-airway as auxiliary airway

Claims (3)

A vacuum cleaner main body containing an electric blower and having a main body suction port communicating with the suction side of the electric blower;
A main air passage communicating with the main body inlet and the suction side of the electric blower;
A main dust collecting part that forms part of the main air passage and collects dust separated from air sucked together with dust by driving the electric blower;
An auxiliary air passage different from the main air passage communicating with at least the main dust collecting portion and the suction side of the electric blower;
A part of this auxiliary air passage, and an auxiliary dust collecting part capable of accommodating at least a part of the dust collected in the main dust collecting part,
An electric vacuum cleaner comprising: an air passage switching means capable of selectively switching either the main air passage or the auxiliary air passage. The main dust collection unit includes a filter that collects at least part of the dust,
The electric vacuum cleaner according to claim 1, further comprising an air passage throttle mechanism that squeezes air sucked from a main body suction port by driving an electric blower and blows off dust collected by the filter. The vacuum cleaner according to claim 2, wherein the air path throttle mechanism is interlocked with switching between the main air path and the auxiliary air path by the air path switching means.

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