JP2010051405A - Vacuum cleaner - Google Patents

Abstract

An electric vacuum cleaner capable of suppressing odor from being mixed into exhaust gas while suppressing a decrease in suction performance.
A first dust collecting chamber 172 for collecting dust sucked through a main air passage by driving an electric blower 5 is provided at a common portion of the main air passage and the sub air passage W2. A second dust collection chamber 173 adjacent to the first dust collection chamber 172 is provided in the auxiliary air passage W2. In a state where the main air passage is communicated with the suction side of the electric blower 5, the partition wall 171 that closes and partitions the first dust collection chamber 172 and the second dust collection chamber 173 is connected to the sub air passage W2 by the suction of the electric blower 5. The dust collected in the first dust collection chamber 172 by opening the first dust collection chamber 172 and the second dust collection chamber 173 when switching to the state in which the first dust collection chamber 173 communicates to the second dust collection chamber 173 is opened. And move. Dust in the first dust collection chamber 172 through which the suction air passes when the main air passage is used can be reduced, and mixing of odors into the exhaust can be suppressed while suppressing a decrease in suction performance.
[Selection] Figure 1

Description

  The present invention relates to a vacuum cleaner provided with a dust collecting chamber for collecting sucked dust.

Conventionally, this type of vacuum cleaner includes a vacuum cleaner body that houses an electric blower. The vacuum cleaner main body is provided with a dust collecting unit that collects dust sucked together with air by driving an electric blower. As a dust collection unit, a configuration is known in which dust and air are separated using inertial force or centrifugal force to move the dust, and the separated dust is collected in a dust collection chamber. In the case of such a dust collecting part, unlike the case where a paper or cloth dust collecting bag is used as the dust collecting part, the dust is not stored in the bag-like thing, and dust is easily scattered when it is discarded. For this reason, a part of the sucked air is caused to flow into the dust collection chamber so that the dust is agglomerated to prevent dust from being scattered during disposal (see, for example, Patent Document 1).
Japanese Patent Laying-Open No. 2007-54553 (page 3-11, FIG. 7)

  However, in the above vacuum cleaner, at least a part of the sucked air always flows in the dust collected in the dust collecting chamber, and there is a possibility that the odor of dust may always be mixed into the exhaust. Has a point.

  Although it is conceivable to install a deodorizing filter to prevent such odors from being mixed in, the suction performance decreases due to the increase in ventilation resistance due to this filter, or suction occurs due to clogging of the filter at the end of use. The performance may be degraded.

  This invention is made | formed in view of such a point, and it aims at providing the vacuum cleaner which can suppress mixing of the odor in exhaust_gas | exhaustion, suppressing the fall of suction performance.

  The present invention provides a switching unit that selectively switches one of the first air passage and the second air passage that is partially common to the first air passage so as to communicate with the suction side of the electric blower according to a predetermined condition. And a first dust collecting chamber that is provided in a common portion of the first air passage and the second air passage and collects dust sucked in through the first air passage by driving of the electric blower, and a second air passage A first dust collecting chamber and a second dust collecting chamber adjacent to each other, the switching unit being located between the first dust collecting chamber and the second dust collecting chamber, In a state where it is communicated with the suction side of the electric blower, it is closed to partition the first dust collection chamber and the second dust collection chamber, and from the state where the first air passage is communicated with the suction side of the electric blower. Is provided with a partition wall that is opened when the state is switched to the state of communication with the suction side of the electric blower and communicates between the first dust collection chamber and the second dust collection chamber.

  According to the present invention, when the partition wall that is closed in the state where the first air passage is communicated with the suction side of the electric blower is switched to a state where the second air passage is communicated with the suction side of the electric blower by the switching unit. Since the first dust collection chamber and the second dust collection chamber communicate with each other and the dust collected in the first dust collection chamber can be moved to the second dust collection chamber in the second air passage. The amount of dust in the first dust collection chamber through which the air sucked by the drive of the electric blower passes when using the first air passage can be reduced, for example, compared with the case where a dedicated filter is used, and the deterioration of the suction performance is suppressed. However, it is possible to suppress the mixing of odors into the exhaust.

  Hereinafter, the structure of the vacuum cleaner of one embodiment of the present invention will be described with reference to FIGS.

  In FIG. 14, reference numeral 1 denotes a cleaner body, and the cleaner body 1 is a so-called canister type vacuum cleaner that can run on a floor surface. The vacuum cleaner main body 1 includes a main body case 4 having a lower case 2 whose upper side is opened to be inclined downward from the rear to the front, and a lid 3 that covers an upper portion of the lower case 2. In the case 4, the electric blower chamber 6 that houses the electric blower 5 is disposed on the rear side, and the main body dust collection chamber 8 that is opened and closed by the lid 3 and can be attached to and detached from the dust collection unit 7 is disposed on the front side. 9 (FIG. 13).

  A main body suction port 11 that can communicate with the suction side of the electric blower 5 via the main body dust collecting chamber 8 is formed at the front end of the main body case 4. A hose body 12 is formed in the main body suction port 11. A hand operating part 13 is provided at the distal end of the hose body 12, and a hand holding part 14 gripped by an operator is provided on the hand operating part 13. A plurality of setting buttons 15 for setting the operation of the electric blower 5 and the like by the operator are provided. The extension pipe 16 and a floor brush 17 as a suction port body are sequentially connected to the distal end portion of the hand operation unit 13 in communication.

  Further, a cord reel around which a power cord (not shown) for supplying power to the electric blower 5 is wound is disposed in the main body case 4 so that the power cord can be taken in and out of the main body case 4. Further, the body case 4 is formed with an exhaust port 18 (FIG. 1) for exhausting the exhaust of the electric blower 5 to the outside.

  The electric blower 5 is disposed in the electric blower chamber 6 with the suction side as the front side and the exhaust side as the rear side. The electric blower 5 is operable in a predetermined operation mode by a signal from a control means (not shown) provided in the main body case 4. This operation mode is appropriately set by operating the setting button 15.

  As shown in FIG. 3, the dust collection unit 7 includes a dust separation unit 21 as a dust separation main body and a dust collection unit 22 as a dust collection unit.

  The dust separation unit 21 has a dust separation portion 24 and a filter mounting portion 25 provided integrally with the rear portion of the dust separation portion 24. As shown in FIG. A pleat-shaped pleated filter body 26 that collects water and a rotary valve body 27 that functions coaxially with the pleated filter body 26 and has a function of dust removing means and opening / closing means are rotatably supported on the same axis. ing.

  As shown in FIGS. 3 to 7, the dust separation unit 24 includes a rectangular tube-shaped guide air duct 31 disposed in a substantially central portion in the left-right width direction. A separation chamber portion 32 as a cylindrical separation portion is communicated. In the separation chamber portion 32, as shown in FIGS. 6 and 7, a substantially frustoconical shape, that is, a substantially conical shape, is coaxial with the separation chamber portion 32. A trapezoidal dust separation means 33 is provided. Further, as shown in FIGS. 5 and 7, a communication pipe part 34 communicating with the downstream side of the dust collecting unit 22 is provided on the other side of the guide wind path pipe 31, and further below the guide wind path pipe 31. In addition, a communication air passage portion 35 (FIG. 8) that communicates the downstream side of the separation chamber portion 32 and the upstream side of the filter mounting portion 25 is provided.

  As shown in FIGS. 3 and 5, the guide air duct 31 is airtight on the downstream side of the main body suction port 11 with the dust separation unit 21 mounted in the main body dust collecting chamber 8 (FIG. 14) of the main body case 4. A suction connection port 38 that is connected to the suction port and sucks dust together with air is provided at the front end portion, and a connection opening 39 communicating with the upstream side of the separation chamber portion 32 is provided at the rear end portion. In addition, a locking body 40 for locking the dust collecting unit 22 to the dust separation unit 21 is provided on the upper portion of the guide air duct 31.

  A front packing 42 as a front seal member for airtight connection with the main body suction port 11 is attached to the peripheral edge portion of the suction connection port 38.

  The connection opening 39 guides the air that has passed through the guide air duct 31 to rotate in the circumferential direction between the inner peripheral surface of the separation chamber 32 and the outer periphery of the dust separating means 33.

  The locking body 40 is formed in a longitudinal plate shape in the front-rear direction, and is provided in the front and rear sliding holes 46, 46 formed in the front-rear direction and in the vicinity of the rear end, respectively. Boss-shaped guide boss portions 47, 47 protruding from the upper surface of the road pipe 31 are inserted and guided so as to be slidable in the front-rear direction. Further, the locking body 40 is biased forward by a locking body biasing means (not shown). The locking body 40 has a rectangular locking hole 55 formed in the center, and a locking claw (not shown) that projects downward from the dust collecting unit 22 in the locking hole 55. 3 is inserted into the dust separation unit 21 by engaging the locking claw with the locking hole 55 by the urging force of the locking body urging means. When the front end side is pushed backward against the urging force of the locking body urging means and slides backward, the engagement of the locking claw to the locking hole 55 is released, The dust collection unit 22 is configured to be removable from the dust separation unit 21.

  The separation chamber portion 32 is a portion that separates dust from the air. As shown in FIGS. 6 and 7, a connection opening 39 that communicates with the guide air duct 31 is provided in the upper portion on the front end side. A circular opening 59 to which the dust separating means 33 is attached is formed in the center, and a fan-shaped life extension opening 61 is formed around the opening 59. In addition, a dust return opening 63 serving as a communication opening that communicates with the filter mounting portion 25 side via the communication air passage 62 is formed in the lower peripheral wall portion of the separation chamber portion 32. Further, the separation chamber portion 32 can be opened and closed by a lid 64. An introduction opening 65 that allows the inside of the separation chamber 32 to communicate with the upstream side of the dust collecting unit 22 is formed in the upper peripheral wall of the separation chamber 32.

  Between the connection opening 39 and the suction connection port 38, a first opening / closing valve 66 (FIG. 4), which is located in the guide air duct 31 and is an upstream opening / closing member as a first air passage opening / closing member, can be opened and closed. Is provided.

  The first on-off valve 66 communicates / blocks the connection opening 39 and the suction connection port 38, is formed in a longitudinal shape in the left-right width direction, and is formed vertically at one end of the longitudinal direction of the guide air duct 31. A first on-off valve shaft support portion 68 that is supported by the shaft is provided. The upper end of the first on-off valve shaft support 68 is inserted into an on-off valve shaft support hole 69 formed on the side of the introduction opening 65 in the upper part of the guide air duct 31, and this upper end is connected to the connection mechanism. It is connected to the rotary valve body 27 side through 70.

  Here, the connection mechanism 70 connects the crank body 72 as a connection body whose one end portion is rotatably connected to the upper end portion of the first on-off valve shaft support portion 68, and the crank body 72 and the rotary valve body 27. And a connection plate 73 as a sliding connection body. The connecting mechanism 70 is at least partially covered with the locking body 40 and a cover body 71 provided from the front portion of the filter mounting portion 25 to the upper portion of the guide air duct 31.

  The crank body 72 is connected to the first opening / closing valve 66 so that the distal end side maintains a constant angle in plan view.

  The connecting plate 73 includes a plate-like connecting plate main body 75 and an extending arm portion 76 that extends substantially horizontally from the left end portion of the connecting plate main body 75 shown in FIG.

  The connecting plate main body 75 is formed in a horizontally long shape and is accommodated in a mechanism accommodating portion 77 formed in the front portion of the filter mounting portion 25. The connecting plate body 75 is formed with a rotation shaft hole 79 through which the rotation shaft 78 of the rotary valve body 27 is inserted in the shape of a long hole in the left-right width direction. The rotation shaft 78 is disposed above the rotation shaft hole 79. A gear-shaped rack gear portion 82 that meshes with a meshing gear portion 81 that is provided at a part of the peripheral edge portion is provided along the left-right width direction. Therefore, the connecting plate main body 75 has a role of converting the rotation of the rotary valve body 27 into sliding in the left-right width direction.

  A proximal end side of the crank body 72 is pivotally supported at the distal end portion of the extending arm portion 76 so as to be rotatable. Therefore, the crank body 72 is configured to be able to convert the sliding of the connecting plate main body 75 in the left-right width direction into the rotation of the first on-off valve shaft support portion 68 of the first on-off valve 66.

  In addition, as shown in FIGS. 1, 2, and 6, the opening 59 communicates with the filter mounting portion 25 via the communication air passage portion 35.

  In the life extension opening 61, ribs (not shown) are formed in a lattice shape, and a net filter 86 is attached over the ribs. The life extension opening 61 communicates with the upstream side of the filter mounting portion 25 through the communication air passage portion 35 in the same manner as the opening 59.

  The communication air passage 62 is formed in a substantially horizontal shape from the lower rear side of the separation chamber portion 32 to the lower portion of the filter mounting portion 25.

  A second opening / closing valve 87 as a second air passage opening / closing member for opening / closing the dust returning opening 63 is attached to the dust returning opening 63 shown in FIG. The second on-off valve 87 is a flap-like member that opens and closes due to a pressure difference between the upstream side and the downstream side.

  As shown in FIGS. 6 and 7, the dust separating means 33 includes a circular plate 91 located at the distal end portion and an annular ring frame 92 attached around the opening 59. The ring frame 92 is connected by a plurality of radially connecting rib-shaped connecting frames 93, and a net filter 95 is provided in a communication opening 94 formed between the connecting frames 93 and communicating with the opening 59.

  As shown in FIGS. 1, 2, and 5, the communication pipe portion 34 includes an upper opening 96 that is a first communication port as a communication port formed in a side portion of the dust separation unit 24 and a communication port. A first connection opening 99 is formed in the front part of the filter mounting portion 25, which extends continuously from the lower opening 97, which is the second communication port, and the rectangular tube-shaped protruding tube portion 98 projecting from the lower portion. Communicated through. Further, a partition wall portion 100 is formed in the communication tube portion 34 between the protruding tube portion 98 side, and a communication hole 101 communicating with the protrusion tube portion 98 is formed in the partition wall portion 100. In addition, a fine dust filter 102 as a pleated fine dust collecting means is attached to the communication hole 101.

  A seal member 104 is provided at the outer edge portion of the upper opening 96 and the lower opening 97, and can be connected to the downstream side of the dust collecting unit 22 in an airtight manner. An upper shutter 105 as a first shutter that can open and close the upper opening 96 is rotatably mounted on the downstream side of the upper opening 96, that is, inward of the communication pipe portion 34. That is, a lower shutter 106 as a second shutter capable of opening and closing the lower opening 97 is rotatably attached to the inside of the communication pipe portion 34.

  The shutters 105 and 106 are opened and closed by a pressure difference between the upstream side and the downstream side, respectively. The upper end side of the upper shutter 105 is pivotally supported at a position above the upper opening 96, and the upper end side of the lower shutter 106 is lower opening 97. Is pivotally supported at an upper position. The upper shutter 105 is biased in the closing direction, that is, toward the upper opening 96 by a first shutter biasing means such as a torsion spring (not shown), and the lower shutter 106 is biased by a second shutter such as a torsion spring (not shown). It is urged by the means in the closing direction, that is, toward the lower opening 97 side.

  Here, each shutter urging means has an urging force that is smaller than the pressure difference between the upstream side and the downstream side of each shutter 105, 106 generated by the negative pressure of the electric blower 5. The first shutter urging means is set to have a larger urging force in the closing direction than the second shutter urging means. Therefore, the upper shutter 105 is more difficult to open and close than the lower shutter 106.

  In the fine dust filter 102, a plurality of pleats extending in the front-rear direction are formed in the left-right width direction. The fine dust filter 102 is disposed at a position below the first connection opening 99.

  Further, as shown in FIGS. 1, 2, and 8, the protruding tube portion 98 is located near the rear side of the dust separation portion 24, and is connected as a connection seal member to the outer peripheral edge portion of the lower end portion that is the front end side. A packing 108 is attached.

  The communication air passage portion 35 is formed in the front-rear direction in parallel with the communication pipe portion 34, and the rear end portion has a second connection opening 109 formed adjacent to the side portion of the first connection opening 99. The air passage communicates with the front portion of the filter mounting portion 25 through the air passage.

  As shown in FIG. 4, the filter mounting portion 25 is configured such that the pleated filter body 26 and the rotary valve body 27 are rotatable in a storage case 111 which is a substantially cylindrical filter body having an open rear end. It is detachably arranged.

  As shown in FIGS. 3, 4, 7, and 8, the storage case 111 includes a front wall portion 114 as a substantially circular partition wall that forms a front end, and an outer peripheral edge portion of the front wall portion 114. A dust receiving portion 115 protruding rearward from the rear side.

  A dust separation part 24 is integrally formed at the front part of the front wall part 114. Further, a shaft support hole (not shown) for rotatably supporting the rotary valve body 27 is formed in the central portion of the front wall portion 114. Further, connection openings 99 and 109 are formed in the lower portion of the front wall portion 114 in the substantially central portion in the left-right width direction, and outside air that is an upper opening portion serving as an outside air introduction port is located on the upper side. An introduction port 117 is formed in a fan shape along the circumferential direction. Further, a guide portion 118 for guiding the rotary valve body 27 is provided on the front wall portion 114 along the circumferential direction.

  Here, the first connection opening 99 is formed in a longitudinal shape in the vertical direction.

  Further, the second connection opening 109 is formed adjacent to the first connection opening 99 and narrower than the first connection opening 99.

  A packing 119 as a filter upstream seal member is attached to the peripheral edge of the connection openings 99 and 109.

  Further, the outside air introduction port 117 can communicate the outside air and the dust receiving portion 115 side, and is formed above the guide portion 118 along the guide portion 118. The outside air introduction port 117 is provided with an open / close lid capable of opening and closing the outside air introduction port 117, that is, a third on-off valve 120 as an on-off valve for outside air as a third opening / closing member.

  Hereinafter, the outside air refers to air located outside the dust collection unit 7, and does not necessarily refer to air outside the cleaner body 1, but also includes exhaust air from the electric blower 5.

  Further, the third on-off valve 120 is located on the front side of the front wall portion 114, hinge portions 121, 121 are projected from the lower end portion, and these hinge portions 121, 121 are provided at the front portion of the guide portion 118. Further, the hinge receiving portion 122 is pivotally supported by the hinge receiving portion 122 and is urged rearward, that is, the front wall portion 114 by an opening / closing body urging means (not shown). The third opening / closing valve 120 can open and close the outside air introduction port 117 by moving forward against the urging force of the opening / closing body urging means. Further, as shown in FIG. 8, an opening / closing body protrusion 124 capable of contacting the rotary valve body 27 protrudes from the rear portion of the third opening / closing valve 120. The open / close body projecting portion 124 is formed so that the projecting amount increases from the left end portion to the right end portion shown in FIG. It protrudes.

  The guide portion 118 is formed in an arc shape of about 90 ° from the left side to the upper side of the front wall portion 114 shown in FIG.

  The dust receiving portion 115 is a wall-like portion that protrudes rearward over the entire circumference of the front wall portion 114 and receives fine dust dropped from the pleated filter body 26 by the rotary valve body 27. The portion 115 has a lower powder inlet as a discharge opening at a position lower than the central portion of the front wall portion 114 and substantially symmetrical to the outside air inlet 117 with respect to the central portion of the front wall portion 114. A lower discharge opening 131 is formed.

  The lower discharge opening 131 is formed in an elongated rectangular shape and communicates with the separation chamber portion 32 through the communication air passage 62. In addition, an opening / closing member 132 that is opened and closed by the rotation of the rotary valve body 27 is disposed in the lower discharge opening 131. The opening / closing member 132 is provided so that the lower discharge opening 131 can be opened and closed according to the rotation direction of the rotary valve body 27.

  As shown in FIG. 4, the pleated filter body 26 includes a substantially cylindrical shaft portion 136 that is located at the center and into which the rear end portion of the rotation shaft 78 of the rotary valve body 27 is inserted. It has a plurality of pleated bones 137 radially projecting from the outer peripheral surface, and a pleated filter 139 as a fine dust filter attached to the pleated bones 137 and formed in a radial pleat shape. In FIG. 4, the pleated filter body 26 is shown with only its main part, and the pleated filter 139 is shown with a part cut away to show the pleated bone 137.

  Further, as shown in FIG. 8, the rotary valve body 27 is provided with a shaft portion 141 as a rotating body shaft portion inserted into the shaft portion 136 of the pleat filter body 26, and projecting radially from the shaft portion 141. It has a fourth on-off valve 142 as a fourth on-off member that is a valve part, and a dust removal arm part 143 that protrudes from the shaft part 141 in the opposite direction to the fourth on-off valve 142.

  The shaft portion 141 is provided with the meshing gear portion 81 (FIG. 4) at the front end portion that protrudes to the front side of the front wall portion 114.

  The fourth on-off valve 142 is formed in a shape that can cover the connection openings 99 and 109. The fourth on-off valve 142 opens the entire connection openings 99 and 109 in a state where the rotary valve body 27 is shown by a solid line in FIG. 8 and also has a connection opening 99 in a state shown by an imaginary line 142a in FIG. , 109 is closed. In these states, the rotation of the rotary valve body 27 is restricted by the fourth on-off valve 142 coming into contact with the stopper portions 144 and 145 provided on the front wall portion 114. The fourth on-off valve 142 is configured to abut on the opening / closing member 132 and open / close the opening / closing member 132 during rotation.

  The dust removal arm portion 143 is formed longer than the distance to the outside air introduction port 117 with respect to the shaft portion 141, and abuts against the opening / closing body projecting portion 124 of the third opening / closing valve 120 during rotation. 120 is configured to open and close. Further, the dust removal arm portion 143 is provided with a dust drop protrusion 147 as a dust removal portion protruding toward the rear side, that is, the pleated filter body 26 side. The dust drop protrusion 147 is a portion that removes fine dust collected by the pleat filter 139, that is, fine dust, by applying vibration to the pleat filter 139. The pleated filter body 26 is attached to the filter mounting portion 25. The amount of protrusion is set so as to be fitted to the valley of the pleated filter 139 in the mounted state. Further, the dust drop projecting portion 147 is biased by a biasing means (not shown) in a direction that maintains a state of projecting rearward substantially perpendicularly with respect to the dust removing arm portion 143.

  On the other hand, as shown in FIG. 1 to FIG. 3 and the like, the dust collection unit 22 communicates with the dust separation unit 21 downstream of the separation chamber 32 in a state where the dust collection unit 22 is mounted. A communication air passage portion 151 and a lid 152 rotatably attached to the communication air passage portion 151. A dust collection chamber portion 153 is provided between the communication air passage portion 151 and the lid body 152 on the downstream side of the communication air passage portion 151. Is formed.

  The communication air passage portion 151 has a substantially L-shape in a front view including an air passage portion 154 that is long in the left-right width direction and a side wall portion 155 that extends downward from the right end portion of the air passage portion 154 shown in FIG. It is formed in a shape.

  The air passage portion 154 has an air passage portion opening 156 communicating with the introduction opening 65 formed in the lower portion, and defines an air passage communicating the separation chamber portion 32 and the dust collection chamber portion 153 inside. In addition, a handle portion 157 capable of lifting the dust collection unit 22 is provided on the upper portion of the air passage portion 154.

  The side wall portion 155 is a portion that divides one side of the dust collection chamber portion 153, and is a first dust collection chamber communication port that communicates with the upper opening 96 in a state where the dust collection unit 22 is attached to the dust separation unit 21. An upper opening 161 serving as a dust collection chamber communication port and a lower opening 162 serving as a second dust collection chamber communication port serving as a dust collection chamber communication port communicating with the lower opening 97 are vertically spaced apart from each other. A filter frame 163 is attached to cover the openings 161 and 162. Further, the right side of the side wall portion 155 shown in FIGS. 1A and 2A is an opening 164 that is a dust disposal port of the dust collection chamber portion 153.

  A first hole 166 is formed in the filter frame 163 at a position facing the upper opening 161, and a second hole 167 is formed at a position facing the lower opening 162. A first filter 168 is attached to the first hole 166, and a second filter 169 is attached to the second hole 167.

  Each of the first filter 168 and the second filter 169 is a net filter or the like. For example, the second filter 169 is set more finely than the first filter 168.

  The dust collection chamber portion 153 is a portion in which dust D mainly containing coarse dust, which is relatively large dust such as cotton dust, is accommodated, and the first dust collection chamber 172 is disposed on the upper side by the partition wall 171. In addition, the second dust collecting chamber 173 is partitioned. Further, the dust collection chamber 153 can be opened and closed by a lid 152.

  The partition wall 171 is composed of one valve body 171a rotatably attached to the filter frame 163 on the communication air passage portion 151 side and the other valve body 171b rotatably attached to the lid body 152 side. It is configured.

  Although not shown, the valve bodies 171a and 171b are configured such that the shaft support portion is coupled to, for example, the first on-off valve shaft support portion 68 or the connection mechanism 70, and is rotated in the vertical direction in conjunction with these operations. Has been. The first dust collection chamber 172 and the second dust collection chamber 173 are partitioned in a state where the valve bodies 171a and 171b are closed, and the valve bodies 171a and 171b are opened so that the first dust collection chamber 172 The second dust collecting chamber 173 communicates with the second dust collecting chamber 173.

  The first dust collecting chamber 172 communicates with the communication pipe portion 34 via the upper opening 96 and the upper opening 161 on the downstream side in a state where the upper shutter 105 is opened.

  The second dust collection chamber 173 communicates with the communication pipe portion 34 via the lower opening 97 and the lower opening 162 on the downstream side in a state where the lower shutter 106 is opened.

  The lid 152 is pivotally supported by the side wall 155 at the lower end of the opening 164 so as to be rotatable. Further, a locked portion 176 that is locked by a locking mechanism 175 partially provided in the handle portion 157 is provided at the upper end portion of the lid 152.

  The locking mechanism 175 is a release button 178 operated by the operator while holding the handle 157 on the opposite side of the handle 152 to the lid 152, that is, on the left end shown in FIGS. 1 (a) and 2 (a). 1 and a hook portion 179 that is operated by operating the release button 178 protrudes from the right end portion shown in FIGS. 1A and 2A, and the hook portion 179 is provided in the handle portion 157. Locking claw portion biasing means (not shown) for biasing in the locking direction is provided.

  On the other hand, as shown in FIG. 13, the partition wall 9 is provided along the front-rear direction so as to intersect with the partition wall central part 181 fitted in the substantially central part in the left-right width direction. Partition wall air passage portion 182.

  As shown in FIGS. 12 and 13, the partition wall central portion 181 is provided with a circular portion 183 having a substantially circular shape when viewed from the front at the central portion in the left-right width direction, and the circular portion 183 at the lower end of the circular portion 183. A closed surface portion 184 is provided in a protruding manner.

  The circular portion 183 is formed in a concave shape from the front side to the rear side, and a substantially columnar support shaft 186 projects forward from the center portion. A circular plate-shaped circular rotation portion 187 rotates on the support shaft 186. It is supported freely. In addition, a protruding recess 188 that protrudes downward across the closing surface portion 184 is continuously formed at the lower portion of the substantially central portion in the left-right width direction of the circular portion 183. Further, on the lower left side of the support shaft 186 of the circular portion 183 shown in FIG. 12, a circular communication hole 189 communicating with the suction side of the electric blower 5 (FIG. 9) is formed.

  As shown in FIG. 12, the circular rotating portion 187 has a substantially cylindrical shaft supporting portion 191 through which the support shaft 186 is inserted and protrudes rearward at the center portion, and around the front end portion of the shaft supporting portion 191. A plurality of radiating ribs 192 are provided radially, and a plurality of concentric ribs 193 are provided concentrically with the shaft support 191 so as to connect the radiating ribs 192 together. Therefore, between the radiation rib 192 and the concentric rib 193 is a communication hole portion 194 that communicates the front portion and the rear portion of the circular rotating portion 187. Further, the outer peripheral edge portion of the circular rotating portion 187 is provided with a rotating frame portion 195, and an outer peripheral gear portion 196 as a meshing portion is provided over the entire outer peripheral portion at the rear portion of the rotating frame portion 195. Yes.

  A protruding rib 198 protrudes forward from a part of the radiating rib 192 and is provided in a wall shape along the radiating rib 192. The protruding rib 198 is fitted into a valley portion of the pleated filter body 26 to rotate the circular rotating portion 187 and the pleated filter body 26 integrally.

  The projecting recess 188 is formed with a hole 201 (FIG. 13) in a substantially central part, and a rotating gear 202 that rotates a circular rotating part 187 is rotated in the hole 201 as shown in FIGS. It is provided freely. Further, a partition wall packing 203 as a partition wall sealing member continuous over the periphery of the circular portion 183 is attached to the periphery of the protruding recess 188.

  The rotating gear 202 is configured such that the circular rotating portion 187 rotates with the rotation of the rotating gear 202 by meshing with the outer peripheral gear portion 196 of the circular rotating portion 187.

  A packing 204 as a seal member is provided at the peripheral edge of the communication hole 189. Further, in the vicinity of the communication hole 189, a fifth on-off valve 205 as a fifth opening / closing member for opening and closing the communication hole 189 is provided.

  Here, the fifth on-off valve 205 includes a valve body 206 having a circular shape in front view that is slightly larger than the communication hole 189, and a shaft support arm section 207 that pivotally supports the valve body 206 at the distal end portion. ing.

  The distal end portion of the shaft support arm portion 207 is biased in the circumferential direction by a biasing means (not shown) with respect to the valve body 206, and the base end portion of the shaft support arm portion 207 is drilled in the circular portion 183. It is pivotally supported in a pivotal support hole (not shown) that is rotatable.

  Further, the closing surface portion 184 is formed with a fitting hole portion 211 into which the partition air passage portion 182 is fitted at the lower left portion shown in FIG.

  On the other hand, as shown in FIGS. 9 and 10, the bulkhead air passage portion 182 includes a communication protrusion 213 protruding toward the main body dust collection chamber 8 (FIG. 14), and an electric blower chamber 6 from the rear portion of the communication protrusion 213. (FIG. 14) A rectangular tubular vertical air passage portion 215 rising upward in FIG. 14, and projecting backward from the upper end portion of this vertical air passage portion 215 to communicate with the suction side of the electric blower 5 (FIG. 9). A cylindrical communication tube portion 216 is integrally formed.

  As shown in FIG. 9, the communication projecting portion 213 is opened at the lower side, and is in close contact with the lower surface of the main body dust collection chamber 8 (FIG. 14) so that it does not contact the lower surface of the main body dust collection chamber 8 (FIG. 14). This is a portion that divides the air path between them, is formed in a longitudinal shape in the left-right width direction, and faces the lower side of the rear part of the dust collection unit 7 with the dust collection unit 7 mounted in the main body dust collection chamber 8. Is formed in the front upper portion, and a rectangular connection hole 219 communicating with the vertical air passage portion 215 is formed in the facing surface portion 218. Further, as shown in FIGS. 11 and 12, the communication projecting portion 213 is fitted in the fitting hole 211 on the rear side.

  As shown in FIG. 9, the connection hole 219 is a portion that is connected to the protruding tube portion 98 (FIG. 8) in a state where the dust collection unit 7 is mounted in the main body dust collection chamber 8 (FIG. 14). A connection hole packing 221 as a seal member is provided on the outer edge portion on the upper side of the connection hole 219.

  The vertical air passage portion 215 is provided integrally with the air passage constituting portion 231 as a duct portion continuous to the rear upper side of the communication projecting portion 213 on the downstream side of the pleat filter 139 and on the side of the air passage constituting portion 231. And a mounting portion 233 located on the side of the air passage component 231 and below the mechanism portion 232.

  The air path component 231 is formed in a rectangular tube shape having an axial direction along the vertical direction, and a sixth on-off valve 235 that is a downstream side opening / closing member serving as a sixth opening / closing member is disposed therein. Furthermore, a substantially cylindrical connecting tube portion 237 connected to the rear portion of the communication hole 189 in the partition wall central portion 181 is provided at the upper end portion of the air passage constituting portion 231 in a horizontal shape having an axial direction along the front-rear direction. It has been. The connecting tube portion 237 has a lower end portion communicating with the air passage constituting portion 231, is provided coaxially with the communicating tube portion 216, and communicates with a front portion of the communicating tube portion 216.

  The mechanism portion 232 is formed in an arc shape along an outer wall portion 241 that protrudes in a semicircular arc shape when viewed from the right side of the air passage component portion 231 shown in FIG. 9 and an inner edge portion closer to the lower side of the outer wall portion 241. A guide rib portion 242 provided, an upper rib portion 243 provided in an arc shape along the inner edge portion on the upper side of the outer wall portion 241, and an arc shape along an inner edge portion on the lower side of the outer wall portion 241 And a lower rib portion 244 (FIG. 10). In addition, a shaft hole portion 245 communicating with the inside of the air path constituting portion 231 is formed in the front portion of the mechanism portion 232 in the arc-shaped center portion of the outer wall portion 241. The shaft hole portion 245 includes a drive shaft. A drive gear 247 serving as a driven transmission means is integrally provided on the drive shaft 246.

  The guide rib portion 242 guides the rotation of the drive gear 247.

  The upper rib portion 243 projects forward from the guide rib portion 242 and restricts the rotational position of the drive gear 247 above.

  Similarly, the lower rib portion 244 projects forward from the guide rib portion 242 and restricts the rotational position of the drive gear 247 below.

  The drive shaft 246 is connected to the sixth on-off valve 235 in the air passage constituting section 231 and integrally drives the sixth on-off valve 235 by rotation. Further, the front end portion of the drive shaft 246 is inserted into the shaft support hole portion and connected to the base end portion of the shaft support arm portion 207 on the front side of the partition wall central portion 181 so as to be integrated with the shaft support arm portion 207. It is comprised so that it may rotate.

  The drive gear 247 includes a restriction plate portion 257 as a first gear body provided integrally with the drive shaft 246, and a gear main body portion 258 as a second gear body provided at the rear portion of the restriction plate portion 257. The gear main body 258 and a guide portion 259 provided integrally with the gear main body 258 are provided.

  The restriction plate portion 257 is formed in a fan shape with a central angle of approximately 90 °, and a plurality of elongated restriction holes 261 are formed along the circumferential direction.

  The gear main body portion 258 is formed in a fan shape slightly smaller than the restriction plate portion 257, is provided so as to be coaxially overlapped with the restriction plate portion 257, and has a plurality of insertion ribs 263 inserted into the restriction holes 261 on the front surface. Projected. Further, an outer peripheral gear portion 264 is provided on the outer peripheral edge portion of the gear main body portion 258 as a meshing portion protruding in the radial direction from the restricting plate portion 257.

  The guide portion 259 is provided on the rear side surface in the vicinity of the outer peripheral edge portion of the gear main body portion 258, and a groove portion 267 that fits with the guide rib portion 242 and the upper rib portion 243 is provided along the circumferential direction. A gear coil spring 268 serving as a gear urging means is disposed inside the groove 267. The gear coil spring 268 is formed in a larger width than the groove portion 267 and is held in the groove portion 267. The gear main body 258 is biased downward in the rotational direction or upward in the rotational direction by contracting in contact with the rib portion 243 or the lower rib portion 244.

  The mounting portion 233 is a portion for mounting the motor 271 as a driving means, and a motor shaft as a rotation shaft of the motor 271 is formed in a long hole-like cutout hole portion 275 formed in an inclined shape from below to above. 281 is inserted and protrudes forward. The motor shaft 281 is configured so that the tip end is inserted into the hole 201 and is connected to the rotation gear 202 on the front side of the partition wall central portion 181 so as to rotate integrally with the rotation gear 202. The motor shaft 281 is integrally provided with a rotation gear 284 as drive transmission means having an outer peripheral gear portion 283 that meshes with the outer peripheral gear portion 264.

  The motor 271 is provided so as to be rotatable in both directions by a signal from, for example, a control unit.

  The communication tube portion 216 protrudes rearward, and a blower connection packing 287 as a seal member is provided on the outer peripheral portion of the base end portion, and is airtightly connected to the suction side of the electric blower 5.

  With the above configuration, in the vacuum cleaner, the on-off valves 66, 87, 120, 142, 205, 235 and the valve bodies 171a, 171b of the partition wall 171 are interlocked with the rotation of the motor 271. The main air passage W1 as the first air passage used for normal cleaning and, for example, the end of cleaning, are opened and closed and the shutters 105 and 106 are selectively opened and closed by a pressure difference between the upstream side and the downstream side. Sometimes, the auxiliary air passage W2 as the second air passage for cleaning the pleat filter 139 with air is switched.

  Specifically, as shown in FIGS. 1 (a) and 1 (b), the fourth on-off valve 142 opens the connection openings 99 and 109, and the first on-off valve is linked to the fourth on-off valve 142. The valve 66 opens the connection opening 39, the third opening / closing valve 120 closes the outside air introduction port 117, the fifth opening / closing valve 205 opens the communication hole 189, and the sixth opening / closing valve 235 The inside of the air passage component 231 is closed, and the valve bodies 171a and 171b of the partition wall 171 are closed to partition the first dust collection chamber 172 and the second dust collection chamber 173, and the electric blower 5 Due to the negative pressure, the second on-off valve 87 and the lower shutter 106 close the dust return opening 63 and the lower opening 162 (lower opening 97), respectively, and the upper shutter 105 opens the upper opening 161 (upper opening 96). In this state, from the main body suction port 11 through the suction connection port 38 and the connection opening 39, the guide air duct 31, The electric blower 5 through the separation chamber 32, the communication air passage 151, the first dust collecting chamber 172, the first filter 168, the upper opening 161, the upper opening 96, the first connection opening 99, the pleat filter 139 and the communication hole 189. The first main air passage W1a sucked into the air, and branched from the first main air passage W1a into the life extension opening 61 and the opening 59 in the separation chamber 32, and the communication air passage portion 35 and the second connection opening 109 are A second main air passage W1b that merges with the first main air passage W1a is formed on the upstream side of the pleat filter 139, and the main air passage W1 is formed by the first main air passage W1a and the second main air passage W1b. Is configured.

  As shown in FIG. 2B, the fourth on-off valve 142 closes the connection openings 99 and 109, and the first on-off valve 66 closes the connection opening 39 in conjunction with the fourth on-off valve 142. The third open / close valve 120 opens the outside air introduction port 117, the fifth open / close valve 205 closes the communication hole 189, and the sixth open / close valve 235 opens the air passage component 231. In addition, the valve bodies 171a and 171b of the partition wall 171 are opened to allow the first dust collection chamber 172 and the second dust collection chamber 173 to communicate with each other. 87 and the lower shutter 106 are in a state where the dust return opening 63 and the lower opening 162 (lower opening 97) are opened, respectively, and the upper shutter 105 is in a state where the upper opening 161 (upper opening 96) is opened, thereby introducing outside air. From the upstream side of the pleat filter 139 through the opening 117, the lower discharge opening 131, the communication air passage 62, the dust Dust return opening 63, separation chamber 32, communication air passage 151, first dust collection chamber 172, second dust collection chamber 173, lower opening 162, lower opening 97, fine dust filter 102, communication hole 101, connection hole A secondary air passage W2 through which the outside air is sucked into the electric blower 5 through the air passage 219 and the air passage constituting portion 231 is formed.

  Therefore, the main air passage W1 and the sub air passage W2 are provided so that the filter mounting portion 25, the separation chamber portion 32, and the first dust collection chamber 172 are common. Further, the outside air introduction port 117 is an intake port of the auxiliary air passage W2.

  Then, the on / off valves 66, 87, 120, 142, 205, 235, the shutters 105, 106, the valve bodies 171a, 171b of the partition wall 171, the mechanism portion 232, the motor 271 and the like are used to drive the main air passage W1 to the electric blower. A switching unit 289 for selectively switching between a cleaning mode, which is a first mode for communicating with the suction side of No. 5, and an air cleaning mode, which is a second mode for communicating the auxiliary air passage W2 with the suction side of the electric blower 5, is configured. Has been.

  1 (b) and 2 (b), for convenience, open / close the valve bodies 171a, 171b of the open / close valves 66, 87, 120, 142, 205, 235, the shutters 105, 106, and the partition wall 171. The operation is schematically shown, and the actual on-off valves 66, 87, 120, 142, 205, 235, the shutters 105, 106 and the valve bodies 171a, 171b of the partition wall 171 are not necessarily rotated. It does not indicate movement such as sliding.

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

  First, the hose body 12, the extension pipe 16 and the floor brush 17 are sequentially connected to the main body suction port 11, and the lid body 3 of the main body case 4 is opened to attach the dust collection unit 7 to the main body dust collection chamber 8.

  At this time, the dust separation unit 21 is first installed in the main body dust collection chamber 8 so that the suction connection port 38 is hermetically connected to the downstream side of the main body suction port 11 via the front packing 42 and the filter is attached. The pleated filter body 26 of the portion 25 is fitted to face the circular rotating portion 187 of the partition wall 9.

  Further, by attaching the dust collecting unit 22 to the main body dust collecting chamber 8 to which the dust separating unit 21 is attached, the dust collecting unit 22 is engaged with the dust separating unit 21 by the locking body 40 on the dust separating unit 21 side. Stopped.

  At the same time, the air passage opening 156 of the dust collection unit 22 is airtightly connected to the introduction opening 65 at the top of the dust separation unit 21, and the openings 161 and 162 of the dust collection unit 22 are connected to the dust separation unit 21. The openings 96 and 97 are hermetically connected.

  In this state, the power cord is pulled out from the main body case 4 and connected to an outlet such as a wall surface. When the operator grips the grip portion 14 and operates the predetermined setting button 15, the control means drives the electric blower 5. Then, the switching unit 289 is driven to switch to the cleaning mode.

  Specifically, the control means rotates the motor 271 in the counterclockwise direction shown in FIG. 9 so that the rotating gear 202 connected to the front end portion of the motor shaft 281 of the motor 271 becomes counterclockwise as shown in FIG. 12, the circular rotating portion 187 in which the rotating gear 202 and the outer peripheral gear portion 196 mesh with each other rotates in the clockwise direction shown in FIG. 12, and the pleated filter body 26 rotates integrally with the circular rotating portion 187.

  At this time, the dust drop projecting portion 147 is engaged with the valley portion of the pleated filter body 139 of the pleated filter body 26, so that the rotary valve body 27 is also integrally guided in the same direction as the pleated filter body 26 while being guided by the guide portion 118. 8, the connection openings 99 and 109 are opened, and the dust removal arm portion 143 is detached from the third on-off valve 120, whereby the third opening / closing body urging means biases the third. The on-off valve 120 is restored, the outside air introduction port 117 is closed, and the rotation valve body 27 stops rotating at the position indicated by the solid line in FIG.

  Further, with the rotation of the rotary valve body 27, the meshing gear portion 81 of the rotary valve body 27 rotates counterclockwise as shown in FIG. As a result, the connecting plate 73 slides leftward as shown in FIG. 4, and the base end side of the crank body 72 pivotally supported by the front end portion of the extending arm portion 76 of the connecting plate 73 is shown in FIG. 4 and the distal end side of the first on-off valve 66 connected to the crank body 72 is rotated rightward as shown in FIG. 4, so that the suction connection port 38 and the separation chamber shown in FIG. The 32 connection openings 39 are communicated.

  Further, when the pleated filter body 26 further rotates in the above-described state, the dust dropping protrusion 147 is shown with an imaginary line 147a in FIG. Rotate the pleat filter 139 in contact with the ridge of the rotating pleat filter 139 to get over the ridge, and after this hopping, the dust drop protrusion 147 is restored by the urging force of the urging means and again. Fits into the valley of the pleated filter 139. By repeating this operation, the pleat filter body 26 idles with respect to the rotary valve body 27, and the dust drop protrusion 147 sequentially climbs over the peak of the pleat filter 139, so that vibration is applied to the pleat filter 139. Fine dust collected by the pleated filter 139 is removed from the pleated filter 139 and falls to the dust receiving portion 115.

  Further, the rotating gear 284 integral with the motor shaft 281 of the motor 271 rotates in the counterclockwise direction shown in FIG. 9 together with the motor shaft 281, and is biased upward by the gear coil spring 268. The gear body portion 258 is rotated upward to the state of the imaginary line 258a, and the guide portion 259 is rotated upward along the guide rib portion 242 to the state of the imaginary line 259a together with the gear body portion 258. By rotating 263 to the state of the imaginary line 263a (FIG. 10) in the restriction hole 261, the restriction plate portion 257 starts turning upward integrally with the gear body portion 258, and the outer peripheral gear portion 264 By rotating to the state of the imaginary line 264a and meshing with the outer peripheral gear portion 283 of the rotation gear 284, the drive gear 247 is in the state of the imaginary line 247a shown in FIG. 9 in the clockwise direction shown in FIG. Rotate until At this time, the upper rib portion 243 is fitted into the groove portion 267 of the guide portion 259, the gear coil spring 268 contracts, the drive gear 247 is urged downward, and the other end portion of the drive gear 247 Is rotated to a position facing the outer meshing gear portion 283, the meshing between the rotating gear 284 and the driving gear 247 is cut off, and the rotating gear 284 is idle with respect to the driving gear 247.

  For this reason, the front end side of the sixth on-off valve 235 connected to the rear end side of the drive shaft 246 provided integrally with the drive gear 247 rotates upward (shown by the solid line) as shown in FIG. The inside of the path composing portion 231 is closed, and the distal end side of the shaft support arm portion 207 connected to the front end portion of the drive shaft 246 rotates in the right direction (solid line state) shown in FIG. Is rotated in the right direction (solid line state) shown in FIG. 11 to open the communication hole 189.

  Further, in conjunction with the operation of the mechanism portion 232, the valve bodies 171a and 171b of the partition wall 171 rotate upward, respectively, and as shown in FIG. 2 (a), the tips of the valve bodies 171a and 171b The first dust collecting chamber 172 and the second dust collecting chamber 173 are partitioned by mutually engaging the sides. The upper shutter 105 opens the upper opening 96 by the negative pressure of the electric blower 5, the lower shutter 106 closes the lower opening 97 by the bias of the second shutter biasing means, and the second on-off valve 87 is The dust return port 63 is closed by the pressure difference between the separation chamber 32 side and the communication air passage 62 side.

  As a result, the main air passage W1 is connected to the suction side of the electric blower 5 and the auxiliary air passage W2 is blocked from the suction side of the electric blower 5.

  Then, the operator causes the floor brush 17 to run in the front-rear direction on the floor surface, and sucks dust on the floor surface from the front end side of the floor brush 17 together with air by the action of the negative pressure of the electric blower 5.

  The sucked air becomes intake air and is sucked from the floor brush 17 through the extension pipe 16, the hose body 12 and the main body suction port 11 into the suction connection port 38 of the dust collecting unit 7.

  Thereafter, the air is sucked into the separation chamber 32 from the connection opening 39 together with dust, and is relatively large by swirling between the outer peripheral surface of the dust separation means 33 in the separation chamber 32. Coarse dust, which is dust, is mainly centrifuged and sucked together with air from the inlet opening 65 through the air passage opening 156 into the dust collecting unit 22 (first main air passage W1a).

  Fine dust is collected when the intake air passes through the net filters 86 and 95. The intake air flows from the openings 61 and 59 into the communication air passage 35 and passes along with the intake air to the upstream side of the pleated filter body 26 through the second connection opening 109 (second main air passage W1b). .

  The dust D mainly composed of coarse dust and including fine dust passes through the air passage portion 154 of the dust collecting unit 22 and is accommodated in the first dust collecting chamber 172 of the dust collecting chamber portion 153. In the dust chamber 172, the intake air is compressed when passing through the first filter 168 from the upper opening 161 to the upper opening 96. The passing intake air passes through the first connection opening 99 to the upstream side of the pleated filter body 26.

  Thereafter, the intake air air passes through the pleat filter 139 of the pleated filter body 26, and the pleated filter 139 collects fine dust contained therein.

  The intake air passes through the communication hole 194 and the communication hole 189 of the partition wall 9, passes through the connection cylinder part 237 and the communication cylinder part 216, and is sucked into the suction side of the electric blower 5.

  The intake air sucked into the electric blower 5 passes through the electric blower 5 to become exhaust air, and is discharged from the exhaust port 18 of the main body case 4 to the outside air.

  When cleaning is completed, the operator operates a predetermined setting button 15 to output a stop signal for the electric blower 5 to the control means.

  At this time, the control means that has received the stop signal of the electric blower 5 first drives the switching unit 289 to switch to the air cleaning mode.

  Specifically, the control means rotates the motor 271 in the clockwise direction shown in FIG. 9, so that the rotating gear 202 rotates in the clockwise direction shown in FIG. 12, and the rotating gear 202 and the outer peripheral gear portion 196 are rotated. 12 rotates in the clockwise direction shown in FIG. 12, and the pleated filter body 26 rotates integrally with the circular rotating portion 187.

  Then, the dust drop protrusion 147 engages with the valley portion of the pleat filter 139 of the pleat filter body 26, so that the rotary valve body 27 is also guided by the guide portion 118 and integrally rotated in the same direction as the pleat filter body 26. The rotary valve body 27 is in the position indicated by the imaginary line 27a in FIG. 8, the fourth open / close valve 142 is in the imaginary line 142a, and the open / close member 132 is operated to open the lower discharge opening 131, Each of the connection openings 99 and 109 is closed by the fourth on-off valve 142, and the dust removal arm portion 143 of the rotary valve body 27 moves to the position of the imaginary line 143a in FIG. The third on-off valve 120 moves to the position of the imaginary line 120a in FIG. 8 (imaginary line 120b in FIG. 4) by the contact with the part 124, the outside air introduction port 117 is opened, and the rotary valve body 27 is the stopper part. The rotation is stopped by the action of 145.

  Further, with the rotation of the rotary valve body 27, the meshing gear portion 81 of the rotary valve body 27 is rotated clockwise to the state of the imaginary line 81a shown in FIG. The connection plate 73 slides to the right of the imaginary line 73a in the right direction shown in FIG. The proximal end side of the crank body 72 is rotated rightward as shown in FIG. 4 to the state of the imaginary line 72a, and the distal end side of the first on-off valve 66 connected to the crank body 72 is turned leftward as shown in FIG. By rotating to the state of the imaginary line 66a, the communication between the suction connection port 38 and the connection opening 39 of the separation chamber 32 shown in FIG.

  Further, when the pleated filter body 26 further rotates in the above-described state, the dust dropping protrusion 147 is shown with an imaginary line 147b in FIG. Rotate the pleat filter 139 in contact with the ridge of the rotating pleat filter 139 to get over the ridge, and after this hopping, the dust drop protrusion 147 is restored by the urging force of the urging means and again. Fits into the valley of the pleated filter 139. By repeating this operation, the pleat filter body 26 idles with respect to the rotary valve body 27, and the dust drop protrusion 147 sequentially climbs over the peak of the pleat filter 139, so that vibration is applied to the pleat filter 139. Fine dust collected by the pleated filter 139 is removed from the pleated filter 139 and falls to the dust receiving portion 115.

  Therefore, the rotary valve body 27 operates as a part of the switching unit 289 when it rotates 90 ° clockwise or counterclockwise between the solid line state and the imaginary line 27a shown in FIG. Then, after rotating 90 °, the rotation is stopped and the pleat filter 139 operates as a dust removing means for removing dust.

  Further, the rotation gear 284 integrated with the motor shaft 281 of the motor 271 rotates together with the motor shaft 281 in the clockwise direction shown in FIG. The outer peripheral gear portion 264 of the gear 247 meshes with the outer peripheral gear portion 283 of the rotating gear 284, and the driving gear 247 rotates counterclockwise as shown in FIG. The front end side of the sixth on-off valve 235 connected to the rear end side of the drive shaft 246 is rotated downward to the state of the imaginary line 235a shown in FIG. The distal end side of the shaft support arm portion 207 connected to the front end portion of the drive shaft 246 rotates leftward as shown in FIG. 11 to the state of the imaginary line 207a, and the valve body 206 is moved leftward as shown in FIG. The communication hole 189 is closed by rotating to the state indicated by the imaginary line 206a.

  At this time, the drive gear 247 is rotated downward to the state of the solid line shown in FIG. 9, the lower rib portion 244 is fitted into the groove portion 267 of the guide portion 259, the gear coil spring 268 is contracted, and the drive gear 247 is When the rotating gear is biased upward and one end of the driving gear 247 rotates to the position facing the position of the outer gearing gear 283, the meshing between the rotating gear 284 and the driving gear 247 is cut off. Then, the rotating gear 284 rotates idly with respect to the drive gear 247.

  Further, in conjunction with the operation of the mechanism portion 232, the valve bodies 171a and 171b of the partition wall 171 rotate downward, respectively, and as shown in FIG. Two dust collection chambers 173 communicate with each other. Further, since the urging by the first shutter urging means for urging the upper shutter 105 in the closing direction is larger than the urging by the second shutter urging means for urging the lower shutter 106 in the closing direction, the electric blower 5 Due to the negative pressure, the lower shutter 106 opens the lower opening 97, and the upper shutter 105 closes the upper opening 96. Further, as shown by an imaginary line 87a in FIG. 7, the second on-off valve 87 opens the dust return port 63 due to a pressure difference between the separation chamber portion 32 side and the communication air passage 62 side.

  As a result, the auxiliary air passage W2 is connected to the suction side of the electric blower 5 and the main air passage W1 is blocked from the suction side of the electric blower 5.

  When the outside air is taken into the auxiliary air passage W2 from the outside air introduction port 117 due to the negative pressure of the electric blower 5, the sucked air flows from the upstream side of the pleated filter 139 to the dust receiving portion 115, the lower discharge opening. By being sucked into the separation chamber portion 32 via 131 and the communication air passage 62, fine dust removed from the pleat filter 139 and accumulated on the dust receiving portion 115 is carried to the separation chamber portion 32.

  Thereafter, the air is sucked from the separation chamber 32 through the introduction opening 65 and the air passage opening 156 into the dust collecting chamber 153 of the dust collecting unit 22, and then from the first dust collecting chamber 172 to the second dust collecting chamber 153. The dust D passing through the lower opening 162 and the lower opening 97 via the chamber 173 and collected in the first dust collecting chamber 172 is moved to the second dust collecting chamber 173 and the second filter 169 is moved. When passing through the fine dust filter 102, fine dust is collected, passes through the communication hole 101 and the projecting pipe part 98, passes through the connection hole 219, passes through the air passage structure part 231, and passes through the communication cylinder part 216 to the electric blower 5. The air is sucked into the suction side, passes through the electric blower 5, becomes exhaust air, and is discharged from the exhaust port 18 to the outside of the main body case 4.

  Then, when a certain time has elapsed from the start of the operation of the motor 271, the control unit stops the electric blower 5 together with the motor 271.

  When dust of a predetermined amount or more has accumulated in the dust collecting unit 22, the lid 3 of the main body case 4 is opened and the dust collecting unit 22 is removed from the main dust collecting chamber 8. At this time, the operator pushes the front end portion of the locking body 40 backward, so that the locking body 40 moves backward against the urging force of the locking body urging means 40a in FIG. The locking hole 55 and the locking claw on the dust collecting unit 22 side are disengaged, and the dust collecting unit 22 can be removed upward with respect to the dust separation unit 21. Become.

  Then, when the operator holds the handle 157 above the trash box and operates the release button 178, the lid 152 rotates downward due to its own weight, and the dust collection chamber 153 is opened. Dust D accommodated in the dust collection chamber 173 is discarded from the opening 164.

  Further, when various filters of the dust separation unit 21 are clogged, the dust separation unit 21 is also removed from the main body dust collection chamber 8 and cleaned appropriately.

  Then, the dust separation unit 21 and the dust collection unit 22 are sequentially attached to the main dust collection chamber 8 in the reverse order of the removal.

  As described above, according to the above-described embodiment, the partition wall 171 that is closed in the state of the cleaning mode in which the main air passage W1 is communicated with the suction side of the electric blower 5 is changed by the switching unit 289 to the auxiliary air passage W2. Is opened when switching to the state of the air cleaning mode for communicating with the suction side of the electric blower, the first dust collecting chamber 172 and the second dust collecting chamber 173 are communicated with each other, and the first dust collecting chamber 172 is connected to the first dust collecting chamber 172 in the cleaning mode. Since the collected dust D can be moved to the second dust collecting chamber 173 in the auxiliary air passage W2, the first air through which the air sucked by the drive of the electric blower 5 passes in the cleaning mode using the main air passage W1. The amount of dust in the dust collection chamber 172 can be reduced, and for example, compared with the case where a dedicated filter or the like is used, mixing of odors into the exhaust can be suppressed while suppressing a reduction in suction performance.

  That is, although the sucked dust accumulates in the main air passage W1 used in the cleaning mode, the accumulated dust is not used in the cleaning mode in a predetermined condition such as after the cleaning is completed. Since the odor of the dust D and the fine dust contained in the dust D are not always exposed to the airflow, the odor is generated during cleaning, and the pleat filter 139 is excessive due to the fine dust. Stain can be suppressed.

  In addition, since the dust D is moved using the switching to the auxiliary air passage W2 for air cleaning of the pleated filter 139 and the suction air in the auxiliary air passage W2, a configuration for moving the dust D is provided. Compared with the case where it is provided separately, the configuration can be simplified.

  Further, since the second filter 169, which is finer than the first filter 168 disposed in the first dust collection chamber 172, is disposed in the second dust collection chamber 173, the main air passage W1, that is, the first dust collection chamber 172 side. The first filter 168 is less likely to be clogged during the cleaning mode, and fine dust can be reliably collected by the second filter 169 with finer eyes when switched to the air cleaning mode.

  Further, the upper shutter 105 that opens and closes the downstream side of the first dust collecting chamber 172 is more strongly biased in the closing direction than the lower shutter 106 that opens and closes the downstream side of the second dust collecting chamber 173, thereby providing an air cleaning mode. Since the lower shutter 106 can be opened and the upper shutter 105 can be closed only by the negative pressure generated by driving the electric blower 5, the upper shutter 105 and the lower shutter 106 are switched between the cleaning mode and the air cleaning mode. It is possible to easily form a configuration that selectively opens and closes correspondingly.

  In the above embodiment, the fineness of each of the first filter 168 and the second filter 169 can be set arbitrarily.

  Further, the upper shutter 105 and the lower shutter 106 are connected to, for example, the switching unit 289 via a connecting means such as a gear train, and are configured to be selectively opened and closed corresponding to switching between the cleaning mode and the air cleaning mode. May be.

  Further, instead of the upper shutter 105 and the lower shutter 106, for example, one shutter that can selectively open and close the upper opening 96 and the lower opening 97 may be provided.

  The configuration of the switching unit 289 is not limited to the above as long as it can be switched between the cleaning mode and the air cleaning mode according to a predetermined condition.

  In addition, as a predetermined condition for switching between the cleaning mode and the air cleaning mode, not only operating the off button of the setting button 15 in order to end the cleaning, for example, a setting button 15 dedicated for switching the air cleaning mode is provided, The operation can be arbitrarily set, for example, as a predetermined condition for switching.

  The vacuum cleaner is not limited to the canister type, and may be any type of vacuum cleaner such as an upright type, a handy type, or an autonomous traveling type in which a floor brush is connected to the lower portion of the vacuum cleaner body 1. it can.

The state which switched the vacuum cleaner of one embodiment of this invention to the 2nd air path, (a) is explanatory sectional drawing of the principal part, (b) is explanatory drawing of the whole 2nd air path. The state which switched the electric vacuum cleaner same as the above to the 1st air path is shown, (a) is explanatory sectional drawing of the principal part, (b) is explanatory drawing of the whole 1st air path. It is a perspective view which shows a dust collection part same as the above. It is a perspective view which notches a part and shows the inside of the dust collection part of a vacuum cleaner same as the above. It is a perspective view which shows a part of dust collection part same as the above. It is a side view which shows a part of dust collection part same as the above. It is a perspective view which shows a dust collection part same as the above from the front. It is a perspective view which shows a dust collection part same as the above from the back side. It is a perspective view which shows the principal part of a vacuum cleaner same as the above. It is a front view which expands and shows a part of switching means of a vacuum cleaner same as the above. It is a perspective view which expands and shows a part of partition of a vacuum cleaner same as the above. It is a front view which shows a partition same as the above. It is a perspective view which shows a partition same as the above from the back side. It is a perspective view which shows a vacuum cleaner same as the above.

Explanation of symbols

1 Vacuum cleaner body 5 Electric blower
32 Separation chamber as a separation unit
62 Open air passage
105 Upper shutter as first shutter
106 Lower shutter as second shutter
139 Pleated filter as a fine dust filter
168 1st filter
169 Second filter
171 partition wall
172 First dust chamber
173 Second dust chamber
231 Airway component as duct
289 switching section
W1 Main wind path as the first wind path
W2 Secondary wind path as second wind path

Claims (4)

A vacuum cleaner body containing an electric blower,
A first air passage capable of communicating with the suction side of the electric blower;
A second air passage that is communicable with the suction side of the electric blower and partially shared with the first air passage;
A switching unit that selectively switches one of the first air path and the second air path to communicate with the suction side of the electric blower according to a predetermined condition;
A first dust collection chamber provided in a common part of the first air passage and the second air passage, and collecting dust sucked through the first air passage by driving the electric blower;
A second dust collecting chamber provided in the second air passage and adjacent to the first dust collecting chamber;
The switching unit is located between the first dust collection chamber and the second dust collection chamber, and is closed when the first air passage is in communication with the suction side of the electric blower. And a state where the first air passage is communicated with the suction side of the electric blower and a state where the second air passage is communicated with the suction side of the electric blower. An electric vacuum cleaner comprising: a partition wall that is opened when switching and communicates between the first dust collection chamber and the second dust collection chamber. A first filter disposed in the first dust collection chamber;
The vacuum cleaner according to claim 1, further comprising: a second filter disposed in a second dust collection chamber and having a finer eye than the first filter. The first air path is an air path that passes through a separation unit that separates dust from air, a first dust collection chamber, and a fine dust filter,
The second air path includes an upstream side of the filter, a communication air path communicating the upstream side of the filter and the separation unit, the separation unit, the first dust collection chamber, the second dust collection chamber, and the fine air passage. The electric vacuum cleaner according to claim 1 or 2, wherein the vacuum cleaner is an air passage that passes through a duct portion communicating with a downstream side of the dust filter. A first shutter disposed downstream of the first dust collection chamber in the first air passage and biased in the closing direction;
A second shutter disposed downstream of the second dust collecting chamber in the second air passage and biased in the closing direction;
The electric vacuum cleaner according to any one of claims 1 to 3, wherein the first shutter is set to have a larger biasing force in the closing direction than the second shutter.

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