JP4245555B2 - Cyclone vacuum cleaner - Google Patents

Description

  The present invention relates to a cyclonic vacuum cleaner that centrifuges dust contained in the air by swirling the sucked air, and more particularly to a cyclone dust collector that is detachable from the main body of the vacuum cleaner and removes dust sucked together with air. It is related with the cyclone type vacuum cleaner provided with.

  Conventionally, various vacuum cleaners equipped with a cyclone dust collector have been proposed. The cyclone dust collector is a device that centrifugally separates dust in the air and collects the dust in a dust cup by rotating the air introduced inside at high speed. The cyclone type vacuum cleaner has an advantage that the dust collection power is maintained regardless of the accumulation of dust and the smell of dust is difficult to be generated in the exhaust because the exhaust does not pass through the removed dust. Fine dust that is not centrifuged is removed by a mesh-like filter provided on the peripheral surface of the exhaust pipe when it is discharged together with air from the exhaust pipe provided in the center of the cyclone dust collector. The air after the dust is removed is discharged from the exhaust tube to the outside.

  The present applicant has already automatically cleaned the filter that covers the exhaust stack in a vacuum cleaner that houses the cyclone dust collector in the main body of the vacuum cleaner, and controls the leakage of dust scraped off from the filter to the outside. Have proposed improving hygiene (Patent Document 1). According to this proposal, the cyclone main body of the cyclone dust collector is interlocked with the cleaning tool that cleans the filter by sliding with the filter coated on the surface of the exhaust pipe, and the attachment / detachment operation of the cyclone dust collector with respect to the cleaner main body, There is a sliding means for sliding the cleaning tool and the filter. The sliding means is connected to the cleaning tool via a connecting rod, and is supported by a positioning portion provided on the cleaner body side, and a support portion in the direction of taking out the cyclone dust collector from the cleaner body. And a second urging means for urging the housing fixed to the fixing plate.

  In addition, a cyclone dust collecting type vacuum cleaner has been proposed that has high dust separation efficiency and can effectively prevent the separated dust from adhering to the exhaust pipe (Patent Document 2). This cyclone dust collecting type vacuum cleaner is a high-speed swirling air flow that flows into the separation chamber of the cyclone dust collecting device from the inlet into the separation chamber of the cyclone dust collecting device. It is made the structure which descend | falls through the outer side of the shielding member arrange | positioned in this, and flows in into a collection chamber. The downward swirling airflow turns into an upward swirling airflow near the bottom surface of the accumulation chamber, and dust in the airflow is separated when the swirling airflow changes direction by colliding with a separation blade extending from the shielding member toward the bottom surface of the accumulation chamber. . Dust is separated when the upward swirling airflow passes over a loop-shaped barrier provided at the edge of the shielding member, and when it passes over ribs formed at predetermined intervals so as to block the swirling airflow on the outer periphery of the shielding member.

  In the cyclone type vacuum cleaner, the direction of the air flow sucked by the electric blower changes greatly between the inflow side and the outflow side of the dust cup, so the air path loss of the air becomes large and the electric blower performance is fully demonstrated. It is difficult. Therefore, an electric vacuum cleaner provided with a dust separation part in the air passage from the suction port of the vacuum cleaner body to the suction port of the electric blower, and in the dust separation part, one end of the cylindrical passage communicated with the suction port. By providing a butting part at the other end and forming an opening that communicates with the air inlet of the electric blower on the peripheral wall of the passage, the dust having a mass greater than or equal to a predetermined amount is caused to travel straight ahead by the inertia and abut against the abutting part. It has been proposed to drop and accumulate in a dust collection chamber (Patent Document 3). Since dust and air are separated without causing a swirling flow in the passage, the air path loss in the passage is reduced. In addition, the air sucked into the opening is sucked into the electric blower with the air flow direction flowing substantially linearly because the suction port, the pipe portion, and the electric blower are arranged in a straight line. For this reason, the whole wind path loss becomes smaller, and it is aimed at fully exhibiting the function of an electric blower.

JP 2004-249010 A (paragraphs [0073] to [0075], FIG. 1) JP 2003-88485 A (paragraphs [0044] to [0061], FIG. 4) JP 2004-113361 A (paragraphs [0012] to [0017], [0039] to [0040], FIGS. 6 and 9)

  In the cyclone type vacuum cleaner, all of the sucked flow flows into the cyclone dust collector, and air and dust are separated by centrifugal separation action by the swirling flow generated in the cyclone dust collector. Since the cyclone flow is a swirl flow that swirls many times, the flow path from the intake to the exhaust is long, so that the wind path loss, that is, the flow path resistance tends to increase. In addition, fine dust does not work well due to the centrifugal action, and the air flow containing fine dust that has not been separated is exhausted from the exhaust pipe through the rear filter to the outside of the vacuum cleaner. Filter and back filter. These filters are gradually clogged by the trapped dust, further increasing the flow path resistance and causing the suction action by the electric blower to be further reduced. In such a state, the wind path loss is further increased, leading to a decrease in cyclone separation performance.

  Therefore, a vacuum cleaner using a cyclone dust collector has a problem to be solved in terms of preventing the suction force from being lowered while taking advantage of the centrifugal separation action of dust obtained by the cyclone method.

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is a cyclonic vacuum cleaner of a type in which a cyclone dust collector is accommodated in a vacuum cleaner body, which is based on a swirl flow obtained by a cyclone method. An object of the present invention is to provide a cyclone type vacuum cleaner that can secure the suction force for a long period of time while using the centrifugal separation action of dust.

  In order to solve the above-mentioned problems, a cyclone type vacuum cleaner according to the present invention is configured to separate dust contained in a flow that is detachably accommodated in a cleaner body and sucked from an air inlet, in a cyclone dust collection chamber. Provided with a cyclone dust collector for exhausting the rear air to the motor intake path, and provided with a bypass duct that bypasses a part of the flow sucked from the air inlet to the motor intake path before flowing into the cyclone dust collection chamber It consists of that.

  According to this cyclone type vacuum cleaner, a large part of the flow sucked from the air introduction port flows into the cyclone dust collector, and the dust is separated from the air by centrifugal separation with a normal cyclone. Is exhausted to the motor intake path where the suction action by the electric blower works. A part of the flow sucked from the air inlet is bypassed by the bypass duct and sucked into the motor intake path before flowing into the cyclone dust collection chamber. Therefore, the situation where the flow path resistance tends to increase due to the long flow path of the flow through the cyclone dust collection chamber can be mitigated by the bypass flow through the bypass duct. That is, since it is possible to suppress the magnitude of fluctuation of the flow path resistance compared to the case where there is no bypass flow, it is possible to operate the electric blower while maintaining an efficient state, and the relationship with the power required for the operation. As a whole, a reduction in suction force is prevented.

  This cyclone type vacuum cleaner is provided with a straight pipe that connects the air inlet and the cyclone dust collection chamber and guides the flow sucked from the air inlet to the cyclone dust collection chamber in a tangential direction. It can be provided by branching from a straight pipe through a branch opening formed in the pipe. In order to operate the cyclone dust collector efficiently, it is preferable to guide the flow sucked from the air introduction port in a tangential direction with respect to the cyclone dust collection chamber. Therefore, the cyclone dust collection chamber is connected by connecting the air introduction port and the cyclone dust collection chamber. A straight pipe is provided that directs the flow entering the chamber in a tangential direction. A bypass duct is provided in the aspect branched from a straight pipe through the branch opening part formed in such a straight pipe.

  In the cyclone type vacuum cleaner provided with a straight pipe, it is preferable to dispose a filter in the branch opening and capture dust from the flow that is about to be branched to the bypass duct. When the amount of trapped dust increases, the dust trapped by the filter provided in the branch opening is stripped off by the suction flow and flows into the cyclone dust collecting chamber, where it is centrifuged as usual in the cyclone dust collecting chamber. This filter provided in the branch opening can be, for example, a mesh filter. By using a mesh filter, an inexpensive and high-performance filtering action can be obtained while reducing the filter thickness.

  In the cyclone type vacuum cleaner, the cyclone dust collector includes a dust cup formed inside a cyclone dust collection chamber surrounded by a peripheral wall, and the bypass duct can be provided along the outer surface of the peripheral wall of the dust cup. Some cyclone dust collectors have a dust cup formed inside a cyclone dust collection chamber surrounded by a peripheral wall, but a bypass duct is attached along the outer surface of the dust cup peripheral wall, so that it is integrated with the cyclone dust collector. It is advantageous in terms of convenience for manufacturing and maintenance.

  In the cyclone type vacuum cleaner, the vacuum cleaner main body is connected to an air discharge port formed in the cyclone dust collector for exhausting air after dust separation and a duct discharge port formed on the outlet side of the bypass duct. Thus, the rear filter unit that captures the dust remaining in the air or contained in the flow can be removably accommodated. Fine dust may remain in the air exhausted from the cyclone dust collector, and more air may be contained in the air exhausted from the bypass duct. Therefore, it is preferable to provide a rear filter unit in the main body of the vacuum cleaner that captures dust contained in the air and the flow in a mode connected to the air outlet of the cyclone dust collector and the duct outlet of the bypass duct. When the rear filter unit is provided in the vacuum cleaner main body, the convenience of work such as cleaning and washing is improved when the rear filter unit is clogged with dust captured by the rear filter unit.

  In the above cyclonic vacuum cleaner provided with a rear filter unit, the rear filter unit corresponds to a unit case that can be attached to the vacuum cleaner body, a first filter that can be attached to and detached from the unit case corresponding to the air discharge port, and a duct discharge port. Correspondingly, a second filter detachably attached to the unit case and a partition attached to the unit case and provided between the first filter and the second filter can be provided. Since there is a difference in the amount of dust contained in the flow discharged from the air outlet of the cyclone dust collector and the duct outlet of the bypass duct to the motor intake path, the first filter provided corresponding to the air outlet The second filter provided corresponding to the duct outlet is preferably detachable separately from the unit case so that it can correspond not only to the shape but also to the replacement time. Moreover, it is preferable to provide a partition so that there is no influence between the two filters. Further, the two filters can have a difference in performance depending on the amount of dust.

  As described above, the cyclone vacuum cleaner according to the present invention is provided with the bypass duct that bypasses a part of the flow sucked from the air inlet to the motor intake path before flowing into the cyclone dust collecting chamber. Compared to the case of swirl flow only, the flow through the bypass duct reduces the total flow resistance variation, and while using the centrifugal separation action of the dust obtained by the cyclone method in the cyclone dust collector, Overall, the cyclone dust collector can be operated and maintained in an efficient operation region. Therefore, compared with the case of only the swirl flow in the cyclone dust collector, it is possible to avoid a flow path resistance from becoming too large, and to obtain a cyclone type vacuum cleaner that can prevent a reduction in suction force over a long period of time.

  Also, it is connected to the air outlet that is formed in the cyclone dust collector and exhausts the air after dust separation and the duct outlet that is formed on the outlet side of the bypass duct, and remains in the air or included in the flow When the rear filter unit that captures dust is detachably stored in the vacuum cleaner body, it is included in the dust remaining in the air exhausted from the air outlet of the cyclone dust collector and the flow exhausted from the bypass duct Since dust is captured by the rear filter unit, it is possible to reduce as much as possible that the air containing the dust is discharged to the outside of the cleaner.

  Hereinafter, an embodiment of a cyclonic vacuum cleaner according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is an external view showing an embodiment of a cyclone cleaner according to the present invention, FIG. 2 is a perspective view showing an internal structure of the cyclone cleaner shown in FIG. 1 with a case and a cover removed, and FIG. It is a perspective view which shows a cyclone dust collector among FIG.

  A cyclonic cleaner 1 shown in FIG. 1 has a cleaner body 2, a connection hose 3, and a suction head 4. The cleaner body 2 includes a case 5, a wheel 6, and a cover 7 that covers an upper main part of the cleaner body 2 housed in the case 5. The connection hose 3 constitutes a supply path for supplying the air sucked from the suction head 4 to the cleaner body 2. The connection hose 3 is provided with an operation / control unit 8 for operating the position and direction of the suction head 4 and for manually controlling each function of the cleaner provided in the cleaner body 2. The suction head 4 can suck dust together with air through an air suction port (not shown) by operation of an electric blower described later.

  As shown in FIGS. 2 and 3, the cleaner body 2 includes an electric blower 9, a cyclone dust collector 10, and a rear filter unit 60. The electric blower 9 sucks air from the suction head 4 through the connection hose 3 and the cyclone dust collector 10. The cyclone dust collector 10 is provided so as to be detachable from the cleaner body 2, and is a dust collector that turns air sucked by the electric blower 9 and centrifuges dust contained in the air, as will be described later. .

  In the above configuration, when the electric blower 9 housed in the cleaner body 2 is driven, air is sucked from the air suction port of the suction head 4 and sent to the cyclone dust collector 10 via the connection hose 3. In the cyclone dust collector 10, dust contained in the air is centrifuged and collected in the dust cup 12. On the other hand, the air from which the dust has been removed is then discharged out of the machine through an exhaust tube 15 and a filter unit 16 of the cyclone dust collector 10 through an outlet (not shown) provided in the cleaner body 2. .

  Next, details of the cyclone dust collector 10 will be described with reference to FIG. 4 is a top view of the cyclone dust collector shown in FIGS. 2 and 3, FIG. 5 is a cross-sectional view taken along line AA of the cyclone dust collector shown in FIG. 4, and FIG. 6 is a cross-sectional view taken along line BB of the cyclone dust collector shown in FIG. 7 is a cross-sectional view taken along the line C-C of the cyclone dust collector shown in FIG. 4, and FIG. 8 is a front view of the cyclone dust collector shown in FIG.

  For convenience of explanation below, the side to which the connection hose 3 (see FIG. 2) is connected in the vacuum cleaner is referred to as the front, and the opposite side is referred to as the rear. Moreover, the taking-out direction from the cleaner main body 2 of the cyclone dust collector 10 is called upper direction, and the accommodation direction to the cleaner main body 2 of the cyclone dust collector 10 is called downward.

  The cyclone dust collector 10 has the dust collector main body 11 and the dust cup 12 (dust collector) as shown in FIGS. That is, in the cyclone dust collector 10, the portion excluding the dust cup 12 constitutes the dust collector body 11.

  The dust cup 12 is a substantially cylindrical container for collecting dust centrifuged by the high-speed swirling of sucked air, and in particular, as shown in FIG. 5 and FIG. A dust collector main body 11 is detachably connected to the. Further, an air inlet 12a for introducing the air supplied from the suction head 4 through the connection hose 3 into the dust collector is formed above the side surface of the dust cup 12. The upper part of the dust cup 12 forms an annular cyclone dust collection chamber 12b in which the air introduced through the air inlet 12a is swirled at high speed.

  The dust collector main body 11 includes a lid body 13, a lid bottom plate 14, an exhaust pipe 15, a filter portion 16, a cleaning tool 17, and a connecting means 18. In particular, the present invention has a first feature in that the lid 13 is provided with a handle body 30, and the engagement between the operating portion 40 for engaging and disengaging the cover 7 and the engagement of the handle body 30 is provided. There is a second feature in that the release is interlocked, and there is a third feature in that the dust collector main body 11 includes a cleaning tool 17 and a connecting means 18 for the filter unit 16. Hereinafter, the configuration will be described focusing on these features.

  The lid body 13 is an upper lid of the dust cup 12, and as shown in particular in FIG. 3, is composed of a top surface 19 and a side surface portion 20, and a joint side to the dust cup 12 is coupled to the lid bottom plate 14. The top surface 19 is formed with a smooth curved surface that minimizes the space formed between the top surface 19 and the inner surface of the cover 7, and contributes to the downsizing of the cyclonic vacuum cleaner 1. A handle body 30 that can grab the cyclone dust collector 10 is provided on the top surface 19 so as to be able to pop up. This will be described in detail later. The air that has flowed into the front air inlet 12a, centrifuged the dust in the cyclone dust collector 10, and moved up the exhaust cylinder 15 is further exhausted rearward from an air outlet 21 formed behind the lid 13. The

  When the dust collector main body 11 is attached to the dust cup 12, the lid 13 can be fitted to the opening of the dust cup 12 in the side surface portion 20 to close the opening. In the fitted state, the dust collector main body 11 does not move in the left-right and front-back directions with respect to the dust cup 12, and the ring-shaped packing 22 disposed on the side surface portion 20 can seal the opening of the dust cup 12. The dust collected is prevented from leaking outside. The dust cup 12 is provided with a holder 23 in order to make the dust collector body 11 attachable to and detachable from the dust cup 12 and to keep the fitting state in the attached state (best shown in FIGS. 3 to 5). Show). The holder 23 is a lever that can be rotated by a hand operation around the shaft 24, and a latched portion in which the latching portion 23 a extends sideways as a part of the side surface portion 20 by an urging force by a spring (not shown). By pressing 20a, the dust collector main body 11 is separated from the dust cup 12 upward, and the dust collector main body 11 and the dust cup 12 are not rattled. In connection with the holder 23, a rotation stopper that prevents the dust collector body 11 from rotating relative to the dust cup 12 can be provided. When the collected dust is discarded or when the filter is washed, the holder 23 is rotated against the urging force of the spring to separate the locking portion 23a from the locked portion 20a, thereby collecting the dust collector main body 11. And the dust cup 12 can be separated.

  An opening corresponding to the diameter of the exhaust tube 15 is formed at a substantially central portion of the lid bottom plate 14, and the exhaust tube 15 has a lid bottom plate 14 such that the opening coincides with the opening of the cover bottom plate 14. It is fixed to. The exhaust cylinder 15 is a cylinder in which a plurality of exhaust ports for discharging air after centrifugal separation of dust in the cyclone dust collecting chamber 12b are opened on the peripheral surface, and the exhaust port is provided on the peripheral surface. The filter 15a (first filter) is covered so as to cover it. The filter 15a removes fine dust that has not been removed by the centrifugal separation in the cyclone dust collecting chamber 12b, and is formed in a mesh shape, for example.

  One end (upper end) of the exhaust cylinder 15 in the axial direction is connected to the opening of the lid bottom plate 14 as described above. Accordingly, the exhaust cylinder 15 is integrated with the lid body 13 via the lid bottom plate 14. On the other hand, the other end (lower end) of the exhaust cylinder 15 in the axial direction is restrained in a cross shape when viewed from the axial direction through a shielding member 26 that separates the cyclone dust collecting chamber 12b and the dust collecting chamber 12c below the cyclone dust collecting chamber 12b. Connected to the valve 25. The shielding member 26 prevents dust accumulated in the lower dust collection chamber from flying up to the upper cyclone dust collection chamber. The suppression valve 25 has, for example, a fixed-blade structure with a cross-shaped cross section, and is intended to prevent dust in the dust cup 12 from rising due to high-speed swirling of air in the cyclone dust collection chamber 12b. In this example, the suppression valve 25 and the shielding member 26 are an integrated lower assembly 28, but separately manufactured ones may be combined. The lower assembly 28 can be disposed in the dust cup 12 by attaching the lower assembly 28 to the lower portion of the exhaust cylinder 15. Further, the lower assembly 28 is detachably attached to the lower portion of the exhaust cylinder 15 by a fixing means 29 such as a bayonet or a screw, so that the exhaust cylinder 15 and the lower assembly can be disassembled and cleaned and cleaned. Yes. Convenience is improved.

  With the above configuration, the air introduced from the air inlet 12a of the cyclone dust collector 10 into the cyclone dust chamber 12b is swirled at a high speed in the cyclone dust chamber 12b, and the filter 15a and the exhaust port on the peripheral surface of the exhaust cylinder 15 are swept. Through the exhaust tube 15. At this time, most of the dust that has not been removed from the air in the cyclone dust collecting chamber 12b is removed by the filter 15a. The air that has passed through the filter 15a and the exhaust port proceeds to the inside of the exhaust tube 15 toward the axial lid 13 and continues from the air exhaust port 21 through a passage in the lid 13 through the opening of the lid bottom plate 14. To the rear filter unit 60. Then, the air is further cleaned by the rear filter unit 60 (dust that has not been removed by the filter 15a is removed), discharged from the exhaust port (not shown) of the rear filter unit 60 to the outside of the cyclone dust collector 10, and cleaned. It is discharged to the outside of the cleaner body 2 through an exhaust passage (not shown) in the machine body 1 and the electric blower 9.

  The dust collector main body 11 is provided with a handle body 30 that pops up from the lid body 13 above the top surface 19 by a pop-up operation. The handle body 30 includes a grip portion 31 that extends in the front-rear direction through the center and deformed shaft portions 32 and 33 that integrally extend downward at both ends of the handle body 30. As shown in FIG. 3, when the handle body 30 is housed in the dust collector body 11, the handle body 30 sinks into a housing recess 27 formed on the lid body 13 in accordance with the shape of the handle body 30 except for both ends. is there. In the pop-up state, the handle body 30 is in a state in which the shaft portions 32 and 33 protrude from the lid body 13 as shown in FIG. 2 (the grip portion 31 is omitted). The handle body 30 is guided in a vertical direction with a good balance with respect to the dust collector main body 11 by the shaft portions 32 and 33 being slidably guided by guide portions 34 a and 34 b extending from the lid bottom plate 14 of the dust collector main body 11.

  In order to urge the handle body 30 in the pop-up direction from the lid body 13, coil springs 35, 35 as elastic bodies are compressed between the lid body 13 and the lid bottom plate 14 integrated in the shaft portions 32, 33. It is intervened in. In order to maintain the handle body 30 in the cover 13 against the urging force of the coil springs 35, 35, a handle clamp 36 as an engaging portion is provided at an intermediate position in the longitudinal direction of the grip portion 31. It has been. Stable operation of the handle body 30 is ensured by the coil springs 35 and 35 provided on both sides and the handle clamp 36 provided at the intermediate position. As best shown in FIG. 6, the handle clamp 36 is paired with a claw member 37 provided so as to be rotatable with respect to the grip portion 31 and a bridge portion 34 c extending from the guide portions 34 a and 34 b of the lid bottom plate 14. And an engaging portion 38 formed. The claw member 37 is urged to rotate counterclockwise by a spring (not shown), and further, the claw member 37 is prevented from blind movement by being engaged with the presser plate 39, so that the engaged state with the engaging portion 38 can always be maintained. Is preferred. When the claw member 37 is disengaged from the engaging portion 38 against the holding force of the presser plate 39 and the handle clamp 36 is released from the clamped state, the restoring force of the coil springs 35 and 35 in the compressed state As a result, the handle body 30 is popped up. The pop-up amount of the handle body 30 is limited by the stroke of the cleaning tool 17 described later.

  The operation for releasing the clamp state of the handle clamp 36 is obtained by interlocking with the operation for removing the cover 7 from the cleaner body 2. That is, as shown in FIG. 1, the cover 7 is provided with an operation unit 40 for opening and closing. In order to engage and disengage the handle clamp 36 by operating the operation unit 40, An interlocking mechanism 41 extending to the vicinity of 36 is provided along the inner surface of the cover 7. As the operation part 40, it can be set as the press button which can cancel | release latching and can open the cover 7 by pushing. The interlocking mechanism 41 is extended by being guided by the inner surface of the cover 7, and has an appropriate structure such as a rod or a link that transmits an operation motion in the operation unit 40 and converts it into a rotation motion of the claw member 37. Can be adopted. Therefore, when operating the operation unit 40, the handle clamp 36 is disengaged by rotating the claw member 37 clockwise through the interlocking mechanism 41. Therefore, the operation unit 40 can be covered by one-touch operation. 7 can be opened from the cleaner body 2 and the handle body 30 can be automatically popped up from the lid body 13. Since the user can easily grasp the handle body 30 that has popped out, in the cyclone type vacuum cleaner 1, the dust collector body 11 and the dust cup 12 can be lifted to improve the operability in the attachment / detachment operation of removal / attachment. it can.

Next, the cleaning tool 17 and the connecting means 18 will be described. The cleaning tool 17 cleans the filter 15a by sliding with the filter 15a on the peripheral surface of the exhaust tube 15, and includes a cleaning ring 50 made of a brush that slides with the filter 15a along the peripheral surface of the filter 15a. , And a flat plate ring holder 51 for supporting the brush. The cleaning tool 17 is disposed at the lowest position where the cleaning ring 50 contacts the shielding member 26 in a state where the handle body 30 is housed in the lid body 13.

  The connecting means 18 includes a plurality of shafts 52 that connect the ring holder 51 to the handle body 30, and in conjunction with the pop-up operation from the lid body 13 of the handle body 30, the cleaning tool 17 is attached to the filter 15a. Slide. The shaft 52 is accommodated in a concave groove formed on the outer periphery of the exhaust tube 15 in order to avoid the formation of unnecessary uneven portions where dust accumulates by making the outer peripheral surface of the exhaust tube 15 as smooth as possible. Thus, it is possible to slide in the groove in conjunction with the pop-up operation of the handle body 30. Since the shaft 52 penetrates the lid bottom plate 14, a shaft seal 53 is provided in the through hole 14 a of the lid bottom plate 14 to seal between the cyclone dust collection chamber 12 b and the lid bottom plate 14.

  According to the above configuration, the handle body 30 moves up and down integrally with the cleaning ring 50 via the shaft 52 constituting the connecting means 18. Therefore, every time the handle body 30 performs a pop-up operation, the cleaning ring 50 moves up via the shaft 52 and slides on the filter surface side of the filter 15a of the exhaust pipe 15. As a result, fine dust collected on the filter 15a is scraped off by the cleaning ring 50 and dropped into the cyclone dust collecting chamber 12b.

  In addition to the cyclone dust collector 10 described above, the cyclone type vacuum cleaner 1 has a motor intake path (see FIG. 11 and subsequent figures) before a part of the flow sucked from the air introduction port 12a flows into the cyclone dust collection chamber 12b. A bypass duct 70 (in particular, see FIGS. 13 and 14) is provided. As will be described later, the bypass duct 70 forms a curved bypass passage 71 inside.

  FIG. 9 is a partial cross-sectional view of a cyclone dust collector and a cover portion of another embodiment of the cyclonic vacuum cleaner according to the present invention. In this example, when the user presses the cover 7 itself, the handle clamp 36 can be released using the cover itself generated at that time. That is, the cover 7 is provided with an action portion 55 corresponding to the handle clamp 36, and the action portion 55 occupies a position in contact with the claw member 37 of the handle clamp 36 in the normal state of the cover 7. . In this example, the cover 7 itself and the action part 55 function as an interlocking mechanism. When the cover 7 is displaced by, for example, pushing the right end as an operation portion in FIG. 9, the action portion 55 pushes the claw member 37 of the handle clamp 36 by the distal end portion 56 due to the displacement of the cover 7, The engagement with the engagement portion 38 of the handle body 30 is released by the rotation of 37.

  FIG. 10 is a perspective view showing an example of a rear filter unit that can be attached to and detached from the cleaner body of the cyclonic vacuum cleaner. 11 is a longitudinal sectional view in the front-rear direction passing through the air outlet of the cyclone dust collector in the cyclone cleaner shown in FIG. 2, and FIG. 12 is a horizontal sectional view of the cyclone cleaner shown in FIG. 2 passing through the air outlet of the cyclone dust collector. 13 is a longitudinal sectional view in the front-rear direction passing through the flow outlet of the bypass duct in the cyclone cleaner shown in FIG. 2, and FIG. 14 is a horizontal section passing through the flow outlet of the bypass duct in the cyclone cleaner shown in FIG. FIG.

  In the cyclone type vacuum cleaner 1, since the bypass duct 70 is branched from the main flow path, the cyclone dust collector 10 connects the air inlet 12a and the cyclone dust collecting chamber 12b, and connects the air inlet 12a. A straight pipe 72 that guides the sucked flow in a tangential direction with respect to the cyclone dust collecting chamber 12b is provided. The straight pipe 72 functions to efficiently operate the cyclone dust collector 10 by directing the flow sucked from the air inlet 12a and flowing into the cyclone dust collecting chamber 12b in the tangential direction. The straight pipe 72 is preferably slightly squeezed to increase the speed of the suction flow.

  The bypass duct 70 is provided in a manner branched from the straight pipe 72 through a branch opening 73 formed in the outer wall 72a (see FIG. 14) of the straight pipe 72. A mesh filter 74 is disposed in the branch opening 73 as a filter. The mesh filter 74 provides a low-cost and high-performance filtering action while reducing the filter thickness. The mesh filter 74 captures dust from the flow that is about to branch to the bypass passage 71 of the bypass duct 70. When the trapping amount increases, the dust trapped by the mesh filter 74 provided in the branch opening 73 is stripped off by the suction flow and flows into the cyclone dust collecting chamber 12b, and is centrifuged in the cyclone dust collecting chamber 12b as usual. To be separated.

  In the cyclone type vacuum cleaner 1, the bypass duct 70 can be attached along the outer surface of the peripheral wall 12d of the dust cup 12 that forms the cyclone dust collection chamber 12b surrounded by the peripheral wall (FIGS. 2 to 2). 5, see FIG. Specifically, the bypass duct 70 uses a part of the peripheral wall 12d, and is formed of the peripheral wall 12d and a curved and U-shaped passage wall 75 covering the peripheral wall 12d. By attaching the bypass duct 70 along the outer surface of the peripheral wall 12d of the dust cup 12, the bypass duct 70 can be handled integrally with the cyclone dust collector 10, which is advantageous in terms of convenience such as manufacturing and maintenance. The bypass duct 70 is formed with a duct outlet 76 that is aligned with the air outlet 21 at the rear, and the duct outlet 76 is connected to the subsequent motor intake path 77 in the same manner as the air outlet 21.

  According to the cyclone type vacuum cleaner 1, a large part of the flow sucked from the air inlet 12a flows into the cyclone dust collector 10, and the dust is separated from the air by centrifugal separation with a normal cyclone. The air from which the dust has been separated is exhausted to the motor intake path 77 where the suction action by the electric blower 9 works. A part of the flow sucked from the air inlet 12a is bypassed by the bypass duct 70 before flowing into the cyclone dust collecting chamber 12b, and sucked into the motor intake passage 77 through the bypass passage 71. Therefore, a situation where the flow path through the cyclone dust collecting chamber 12b is long and clogging is caused by fine dust on the cyclone dust collector 10 side tends to increase the flow path resistance. The electric blower 9 can be relaxed by looking at the total, and the electric blower 9 can be maintained in an efficient operation state. As a result, a reduction in the suction force as a whole is prevented.

  The vacuum cleaner main body 2 is connected to an air discharge port 21 formed in the cyclone dust collector 10 for exhausting air after dust separation and a duct discharge port 76 formed on the outlet side of the bypass duct 70. A rear filter unit 60 that captures dust remaining in the air or contained in the flow is detachably accommodated. Fine dust may remain in the air exhausted from the cyclone dust collector 10, and more air may be contained in the air exhausted from the bypass duct 70. The rear filter unit 60 is provided in the cleaner body 2 in such a manner that it is connected to the air outlet 21 of the cyclone dust collector 10 and the duct outlet 76 of the bypass duct 70. Since the rear filter unit 60 is detachable from the cleaner body 2, when the rear filter unit 60 is clogged with dust captured by the rear filter unit 60, the rear filter unit 60 is removed from the cleaner body 2 and cleaned, washed, or exchanged. be able to.

  The rear filter unit 60 includes a unit case 61 that can be attached to the cleaner body 2, and a first opening 62 is formed at a position corresponding to the air outlet 21 on the front side thereof, and a duct outlet 76. A second opening 63 is formed at a position corresponding to. The rear side of the unit case 61 is an open filter outlet 67 and is connected to the motor intake passage 77.

  In the rear filter unit 60, a first filter 64 for further filtering the air flowing in through the first opening 62 is detachably attached to the unit case 61. Further, the flow flowing in through the second opening 63 is further increased. A second filter to be filtered is detachably disposed on the unit case 61. Since there is a difference in the amount of dust contained in the flow discharged from the air discharge port 21 of the cyclone dust collector 10 and the duct discharge port 76 of the bypass duct 70, there is a difference between the first filter 64 and the second filter 65. The partition 66 is disposed to prevent mixing of two flows having different dust content ratios. The first filter 64 and the second filter 65 are preferably detachable separately from the unit case 61 so that not only the shape including the size but also the replacement time can be dealt with. Further, the two filters can have a difference in performance depending on the amount of dust.

It is an external view which shows one Example of the cyclone type vacuum cleaner by this invention. It is a perspective view which shows the internal structure shown in the state which removed the case and cover of the cyclone type vacuum cleaner shown in FIG. It is a perspective view which shows a cyclone dust collector among FIG. FIG. 4 is a top view of the cyclone dust collector shown in FIGS. 2 and 3. It is AA sectional drawing of the cyclone dust collector shown in FIG. It is BB sectional drawing of the cyclone dust collector shown in FIG. It is CC sectional drawing of the cyclone dust collector shown in FIG. It is the front view which looked at the cyclone dust collector shown in FIG. 4 from the downward direction. It is the front view which looked at the cyclone dust collector shown in FIG. 4 from the downward direction. It is a perspective view which shows an example of the back filter unit which can be attached or detached to the cleaner body of a cyclone type vacuum cleaner. It is a longitudinal cross-sectional view of the front-back direction passing through the air discharge port of a cyclone dust collector in the cyclone type vacuum cleaner shown in FIG. It is a horizontal sectional view which passes along the air exhaust port of a cyclone dust collector in the cyclone type vacuum cleaner shown in FIG. It is a longitudinal cross-sectional view of the front-back direction which passes the flow discharge port of a bypass duct in the cyclone type vacuum cleaner shown in FIG. It is a horizontal sectional view which passes along the flow discharge port of a bypass duct in the cyclone type vacuum cleaner shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cyclone type vacuum cleaner 2 Vacuum cleaner main body 3 Connection hose 4 Suction head 5 Case 6 Wheel 7 Cover 8 Operation / control part 9 Electric blower 10 Cyclone dust collector 11 Dust collector main body 12 Dust cup 12a Air inlet 12b Cyclone dust collection chamber 12c Dust accumulation Chamber 12d Peripheral wall 13 Cover 14 Cover bottom plate 14a Through hole 15 Exhaust tube 15a Filter 17 Cleaning tool 18 Connecting means 19 Top surface 20 Side surface portion 20a Locked portion 21 Air discharge port 22 Packing 23 Holder 23a Locking portion 24 Shaft 25 Suppression valve 26 Shield member 27 Housing recess 30 Handle body 31 Grip portion 32, 33 Shaft portion 34a, 34b Guide portion 34c Bridge portion 35, 35 Coil spring 36 Handle clamp 37 Claw member 38 Engagement portion 39 Presser plate 40 Operation portion 41 Interlocking Mechanism 50 Cleanie Gring 51 Ring holder 52 Shaft 60 Rear filter unit 61 Unit case 62 First opening 63 Second opening 64 First filter 65 Second filter 66 Partition 67 Filter outlet 70 Bypass duct 71 Bypass passage 72 Straight pipe 72a Outer wall 73 Branch opening 74 Mesh filter 75 Passage wall 76 Duct outlet 77 Motor ninth phase

Claims (6)

A suction head capable of sucking dust together with air by operation of an electric blower;
A connection hose constituting a supply path for supplying air sucked from the suction head to the vacuum cleaner body;
A cyclone dust collector detachably stored in the vacuum cleaner body,
The cyclone dust collector
An air inlet for supplying from the suction head through the connection hose;
A cyclone dust collection chamber for centrifuging dust contained in the flow sucked from the air inlet;
A motor intake path for exhausting air after being separated in the cyclone dust collection chamber;
And a straight pipe which leads tangentially flow sucked from the air inlet and the cyclone dust collecting chamber and the air inlet port connected to to the cyclone dust collecting chamber,
A bypass duct that bypasses a part of the flow sucked from the air introduction port to the motor intake path before flowing into the cyclone dust collecting chamber from the straight pipe through a branch opening formed in the straight pipe. Cyclone-type vacuum cleaner consisting of a branched installation.   The cyclonic vacuum cleaner according to claim 1, wherein a filter is disposed in the branch opening.   The cyclonic vacuum cleaner according to claim 2, wherein the filter is a mesh filter.   The cyclone dust collector includes a dust cup formed inside the cyclone dust collecting chamber surrounded by a peripheral wall, and the bypass duct is provided along an outer surface of the peripheral wall of the dust cup. The cyclonic vacuum cleaner according to claim 1 or 2.   The vacuum cleaner body is connected to an air discharge port formed in the cyclone dust collector and exhausted of the air after dust separation and a duct discharge port formed on the outlet side of the bypass duct, The cyclone type vacuum cleaner according to claim 1 or 2, wherein a rear filter unit that remains in the air and captures dust contained in the flow is detachably accommodated.   The rear filter unit includes a unit case that can be attached to the vacuum cleaner body, a first filter that is detachably attached to the unit case corresponding to the air discharge port, and the duct filter corresponding to the duct discharge port. The second filter provided detachably with respect to the unit case, and a partition attached to the unit case and provided between the first filter and the second filter. Cyclone vacuum cleaner.

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