JP2009268563A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner capable of reducing the maintenance of a pleated filter, reducing breakage, and improving convenience. <P>SOLUTION: The vacuum cleaner includes: a motor-driven blower 6; a dust collecting chamber 10 provided with the inflow port 10a and outflow port 10b of an air current generated by the drive of the motor-driven blower 6, and communicated with the motor-driven blower 6 through the outflow port 10b; the pleated filter 13 disposed in an air current path between the inflow port 10a and the motor-driven blower 6; and a dust removing member 30 movable between a position to be in contact with a dent part 15b on the side of the inflow port 10a of the pleated filter 13 and a position away from the dent part 15b. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner provided with a pleated filter.

  A conventional vacuum cleaner is disclosed in Patent Document 1. This vacuum cleaner is provided with a dust collection chamber on the upstream side of the electric blower with a pleat filter interposed therebetween. The pleated filter is formed by bending a filter medium so that crests and troughs are alternately continued, and is arranged rotatably. A contact member is disposed between the crests on the exhaust side of the pleat filter.

  The dust sucked into the dust collection chamber by driving the electric blower passes through the pleated filter. As a result, dust is collected by the pleat filter and accumulated in the dust collection chamber. The air from which the dust has been removed flows out of the pleat filter and is exhausted to the outside of the electric vacuum cleaner through the electric blower.

  When the electric blower is stopped, the pleat filter is rotationally driven. FIG. 17 is a cross-sectional view showing the main part of the pleated filter at this time. Dust D adheres to the upstream surface of the filter medium 15 of the pleated filter. When the pleat filter is driven to rotate, the contact member 24 moves relative to the direction of arrow A. As a result, the contact member 24 sequentially hits the resin protrusions 14c provided on the top of the filter medium 15 on the downstream side by relative movement. Due to the impact at this time, the dust D adhering to the filter medium 15 of the pleated filter falls off, and clogging can be prevented and the dust collecting performance can be maintained.

Japanese Unexamined Patent Publication No. 2007-7328 (pages 3 to 8, FIGS. 4 and 6)

  However, according to the conventional vacuum cleaner, the valleys of the pleated filter face each other with the filter medium 15 approaching. For this reason, the dust D adhering to the valley 15 b on the intake side of the pleated filter is sandwiched between the filter media 15. As a result, as shown in FIG. 18, even if the projecting portion 14 c is hit with the contact member 24, the dust D does not fall off and partially remains.

  As a result, since the dust D sticks to the valleys 15b due to long-term use, it is necessary to periodically perform maintenance such as washing the pleated filter with water. Further, if a strong force is applied to remove the stuck dust D and washing and the like are performed many times, the pleated filter may be damaged. Therefore, there is a problem that the convenience of the vacuum cleaner is poor.

  An object of this invention is to provide the vacuum cleaner which can reduce the maintenance of a pleat filter, reduce damage, and can improve the convenience.

In order to achieve the above object, the present invention provides:
An electric blower,
A dust collection chamber having an inlet and an outlet for an air flow generated by driving the electric blower, and communicating with the electric blower via the outlet;
A pleat filter disposed in an air flow path between the inflow port and the electric blower;
A dust removing member capable of moving between a position in contact with the valley on the inlet side of the pleat filter and a position away from the valley;
It is characterized by having.

  According to this configuration, when the electric blower is driven, air containing dust flows from the inflow port into the dust collection chamber. In the dust collection chamber, dust is collected by a pleated filter and other means. The air from which the dust has been removed flows out from the outlet and is exhausted to the outside through the electric blower. A dust removing member is disposed in a trough provided on the upstream surface of the pleated filter, and the dust removing member moves away from the trough when the electric blower is stopped. As a result, the dust accumulated in the upstream valley portion falls into the dust collection chamber.

  According to the present invention, in the electric vacuum cleaner having the above-described configuration, the vacuum cleaner includes a contact member that strikes and removes dust while relatively moving the outlet side of the pleat filter, and the relative movement of the contact member with respect to the pleat filter is provided. In conjunction with this, the dust removing member is separated from the valley.

  According to this configuration, when the electric blower is stopped, the abutment member disposed on the downstream side of the pleat filter strikes the peak portion in order while moving relative to the pleat filter. The dust removing member moves away from the upstream trough in conjunction with the relative movement of the contact member. As a result, the dust adhering to the pleat filter drops into the dust collection chamber due to the impact of the contact member, and the dust accumulated in the valleys drops into the dust collection chamber by the dust removal member.

  Further, the present invention is characterized in that, in the electric vacuum cleaner having the above-described configuration, the dust removing member contacts the valley portion when the contact member contacts the pleated filter. According to this configuration, the contact member that moves relative to the pleat filter contacts the pleat filter and strikes it. The dust drops off due to the impact at this time, and then the dust removing member leaves the valley and removes the dust remaining in the valley.

  According to the present invention, in the electric vacuum cleaner having the above-described configuration, an urging unit that urges the dust removing member in a direction to contact the valley is provided.

  According to the present invention, in the vacuum cleaner configured as described above, the dust collection chamber includes a detachable dust collection container, and a swirling airflow is formed in the dust collection container, and the pleat filter is disposed downstream of the dust collection container. It is characterized by having been arranged in. According to this configuration, the air that has flowed into the dust collecting container swirls and the dust is separated and removed by centrifugal force, and flows out of the dust collecting container. Fine dust remaining in the air flowing out of the dust collecting container is collected by a pleated filter.

  Moreover, the present invention is characterized in that, in the vacuum cleaner having the above-described configuration, the pleat filter is provided such that the valleys are provided radially at a predetermined angular interval.

  Moreover, the present invention is characterized in that, in the vacuum cleaner having the above-described configuration, the pleat filter has the valley portions provided in parallel at a predetermined interval.

  According to the present invention, since the dust removing member that moves between the position in contact with the valley on the inlet side of the pleat filter and the position away from the valley is provided, the dust removing member collects the dust accumulated in the valley. Remove by leaving. For this reason, the dust remaining in the valley can be reduced. As a result, the number of maintenance of the pleated filter can be reduced and the damage during the maintenance can be reduced, so that the pleated filter can be used for a long time. Therefore, the convenience of the vacuum cleaner can be improved.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the vacuum cleaner of the first embodiment. The electric vacuum cleaner 1 includes a main body 2 in which an electric blower 6 (see FIG. 2) is housed. An extension pipe 4 of a resin molded product is connected to the suction port body 5 facing the floor surface, and the main body 2 and the extension pipe 4 are connected by a flexible connection hose 3.

  FIG. 2 shows a side sectional view of the main body 2. An electric blower 6 is disposed at the rear of the main body 2, and a dust collection chamber 10 is provided in front of the electric blower 6. The dust collecting chamber 10 has an inflow port 10 a communicating with the connection hose 3 (see FIG. 1) and an outflow port 10 b communicating with the electric blower 6 through the duct 7.

  The dust collection chamber 10 includes a dust collection container 11, a pleated filter 13, and a dust removal device 20. The dust collection chamber 10 is detachable from the main body 2 by gripping the grip 10 c. Thereby, disposal of the dust collected by the dust collecting container 11, maintenance of the pleat filter 13, etc. can be performed.

  The dust collecting container 11 is formed in a cylindrical shape and opens an inflow port 10a at the tip of an inflow passage 11a extending in the tangential direction of the peripheral surface. An inner cylinder 11c is provided at the center of the dust collecting container 11, and an opening 11b through which air flows out from the dust collecting container 11 is formed on the peripheral surface of the inner cylinder 11c. A communication passage 12 that gradually increases in diameter is provided above the inner cylinder 11 c, and a pleat filter 13 having a circular shape in plan view is disposed at the upper end of the communication passage 12.

  FIG. 3 shows a perspective view of the pleated filter 13 as viewed from above. The pleated filter 13 includes a frame material 14 and a filter material 15. The frame member 14 is made of a resin molded product, and the inner cylindrical portion 14a and the outer cylindrical portion 14b are connected by a radial protrusion 14c. The filter medium 15 is integrated with the frame member 14, and crests 15a and troughs 15b are alternately and continuously formed at predetermined angular intervals by bending. Thereby, a collection area can be taken large. The protrusion 14c is attached to the top of the downstream peak portion 15a.

  4 and 5 show a plan view and a front sectional view of the dust removing device 20. The dust removing device 20 includes a rotating body 22, and the rotating body 22 is rotatably supported by a shaft portion 22 a that is fitted to a support shaft 21 that is formed integrally with the communication path 12 (see FIG. 2). The rotating body 22 has an annular portion 22c supported by a plurality of arm portions 22b extending radially from the upper portion of the shaft portion 22a, and a gear portion 22d is formed on the peripheral surface of the annular portion 22c. A gear 23 driven by a driving device (not shown) meshes with the gear portion 22d. The gear 23 may be manually rotated.

  An abutting member 24 disposed between the peak portions 15a on the downstream side of the pleat filter 13 is attached to each arm portion 22b. The rotating body 22 is rotated by the driving of the gear 23, and the contact member 24 is in contact with the protrusion 14c of the peak portion 15a.

  The shaft portion 22a of the rotating body 22 is provided with a screw portion 22e on the peripheral surface below the arm portion 22b. The dust removing member 30 is screwed into the screw portion 22e. FIG. 6 shows a plan view of the dust removing member 30. The dust removing member 30 has an inner cylinder part 30a that is screwed into the screw part 22e, a plurality of arm parts 30b that extend radially from the inner cylinder part 30a, and an annular part 30c that is supported by the arm part 30b. The dust removing member 30 can move up and down in conjunction with the rotation of the rotating body 22.

  The inner peripheral side of the arm part 30b extends in the radial direction from the lower end of the inner cylinder part 30a, straddles the inner cylinder part 14a of the pleat filter 13, is bent upward, and extends along the inner cylinder part 14a. And it has the dust removal bar 30d extended in radial direction along the trough part 15b of the suction side (upstream side) of the filter medium 15. FIG. The outer peripheral end of the arm portion 30b extends along the outer cylinder portion 14b of the pleat filter 13 toward the annular portion 30c disposed downward from the dust removal bar 30d. The filter medium 15 of the pleated filter 13 is provided with a notch (not shown) in which the annular portion 30c of the arm portion 30b is disposed.

  FIG. 7 shows a cross-sectional view taken along the line CC of FIG. The tip of the dust removal bar 30d is formed at the same inclination angle as the valley 15b of the filter medium 15 of the pleated filter 13. Thereby, dust removal bar 30d can be stuck to valley 15b.

  Further, a biasing means 26 (see FIG. 5) such as a wave washer for removing a backlash in a screwed state between the inner cylindrical portion 30a and the screw portion 22e of the rotating body 22 is provided. Thereby, even if the stop position of the gear 23 fluctuates, the dust removal bar 30d can be reliably brought into close contact with the valley portion 15b.

  In the vacuum cleaner 1 having the above-described configuration, when the electric blower 6 is driven, air containing dust is sucked from the suction port body 5 and guided to the dust collecting chamber 10 through the extension pipe 4 and the connection hose 3. The airflow flowing into the dust collecting container 11 from the inlet 10a of the dust collecting chamber 10 is swirled and dust is separated by centrifugal force.

  The air from which the dust has been separated flows into the inner cylinder 11 c through the opening 11 b and passes through the pleat filter 13 through the communication path 12. Thereby, fine dust that has not been separated in the dust collecting container 11 is collected by the pleated filter 13. At this time, as shown in FIG. 8, dust D adheres to the upstream surface (inlet 10 a side) of the filter medium 15 of the pleated filter 13. Further, the dust removal bar 30 d of the dust removal member 30 is in close contact with the valley 15 b on the upstream side of the pleated filter 13. The air from which fine dust has been removed flows out of the dust collection chamber 10 through the outlet 10b. The air that has flowed out of the dust collection chamber 10 is guided to the electric blower 6 through the duct 7 and exhausted to the outside.

  When the electric blower 6 is stopped, the gear 23 is driven and the rotating body 22 rotates. As the rotating body 22 rotates, the contact member 24 moves in the circumferential direction as indicated by an arrow A in FIG. 8, and the dust removing member 30 moves in the direction of the arrow B in conjunction with the contact member 24. As a result, the dust removal bar 30d of the dust removal member 30 is disposed at a position away from the valley 15b as indicated by a two-dot chain line E in FIG.

  As a result, as shown in FIG. 9, the dust D accumulated in the valley 15b on the upstream side of the filter medium 15 is removed when the dust removal bar 30d of the dust removing member 30 is separated from the valley 15b. Further, the contact member 24 sequentially hits the protrusions 14c on the downstream side of the filter medium 15 by movement, and the dust D attached to the filter medium 15 of the pleat filter 13 is dropped by the impact at this time. The dust D dropped from the pleated filter 13 falls into the dust collecting container 11 through the inner cylinder 11c. Thereby, clogging of the filter medium 15 can be prevented and dust collection performance can be maintained.

  When the gear 23 rotates by a predetermined rotation angle, the gear 23 is reversed and returns to a position where the dust removal bar 30 d of the dust removal member 30 is in close contact with the valley portion 15 b of the filter medium 15. When dust accumulates in the dust collection container 11, the user grips the handle portion 10c and the dust collection chamber 10 is removed. The pleat filter 13 is removed from the opening of the dust collecting container 11 together with the communication path 12 and the inner cylinder 11c, and the dust in the dust collecting container 11 is discarded.

  According to the present embodiment, since the dust removing member 30 that moves between the position in contact with the valley 15b on the inlet 10a side of the pleat filter 13 and the position away from the valley 15b is provided, the dust accumulated in the valley 15b. The dust removing member 30 removes D away from the valley 15b. For this reason, the dust D remaining in the valley portion 15b can be reduced. Thereby, the frequency | count of maintenance of the pleat filter 13 can be reduced, and the damage at the time of a maintenance can be reduced, and the pleat filter 13 can be used for a long period of time. Therefore, the convenience of the vacuum cleaner 1 can be improved.

  In addition, since the dust removing member 30 moves away from the valley portion 15b in conjunction with the movement of the contact member 24, the dust D accumulated in the valley portion 15b and the dust D attached between the mountain portion 15a and the valley portion 15a are removed. Can be performed in a series of operations. Thereby, the workability | operativity of the cleaning of the pleat filter 13 can be made favorable.

  In addition, since the pleated filter 13 is disposed downstream of the dust collecting container 11 in which the swirl airflow is formed, fine dust is removed by the pleat filter 13 after removing relatively large dust by the swirl airflow. Thereby, the quantity of the dust adhering to the pleat filter 13 can be reduced, and the frequency | count of the maintenance of the pleat filter 13 can be reduced more.

  In the present embodiment, a contact member 24 may be provided corresponding to each protrusion 14c, and the movement of the dust removing member 30 may be delayed with respect to the rotation of the rotating body 22. At this time, when the contact member 24 contacts the protrusion 14c, the dust removing member 30 is in contact with the valley 15b. And if the contact member 24 leaves | separates from the projection part 14c, the dust removal bar 30d will leave | separate from the trough part 15b. Thereby, it is possible to prevent the dust D that has fallen off due to the impact of the contact member 24 from re-adhering to the valley portion 15b, and to further reduce the number of maintenance of the pleated filter 13.

  Further, although the dust removal member 30 is reciprocated by the rotation of the gear 23 in the forward and reverse directions, the rotation of the drive source in one direction may be converted into the reciprocation of the dust removal member 30 by a cam mechanism or a crank mechanism. .

  Next, the vacuum cleaner of 2nd Embodiment is demonstrated with reference to FIGS. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. 1 to 9 are given the same reference numerals. This embodiment differs in the structure of the dust collection chamber 10 with respect to 1st Embodiment. Other parts are the same as those in the first embodiment.

  10 and 11 are a side view and a rear view showing the dust collection chamber 10 of the vacuum cleaner 1. The dust collection chamber 10 is disposed in the front part of the main body 2, and an inflow port 10 a is provided on the front surface, and an outflow port 10 b is provided by opening the back surface. The outflow port 10 b is blocked by a pleated filter 13.

  FIG. 12 is a cross-sectional view taken along the line AA in FIG. 13 to 15 show a BB sectional view, a CC sectional view, and a DD sectional view of FIG. 12, respectively. In the pleated filter 13, a filter medium 15 is attached to a frame member 14 of a resin molded product that forms the outlet 10 b of the dust collection chamber 10. The filter medium 15 is formed with ridges 15a and valleys 15b alternately and continuously in parallel at predetermined intervals by bending.

  A dust removing device 20 is attached to the pleated filter 13. The dust removing device 20 includes a dust removing member 30 and an urging means 26. A shaft portion 30e of the dust removing member 30 is rotatably supported at one end of the frame portion. The dust removing member 30 is provided with a plurality of dust removing bars 30d extending in a vertical direction from a shaft portion 30e extending in a direction in which the peak portions 15a and the valley portions 15b are arranged. The tip of the dust removal bar 30d is formed at the same inclination angle as the valley 15b as shown in FIG. 7, and is disposed in contact with the valley 15b on the inlet 10a side.

  The urging means 26 is composed of a torsion spring and is fitted on the shaft portion 30 e to urge the dust removal bar 30 d toward the filter medium 15. Thereby, the dust removal bar 30d can be brought into close contact with the valley 15b on the inlet 10a side.

  Further, an operating portion 30f is provided on the shaft portion 30e so as to protrude upward. When the user operates the operation portion 30f, the dust removing member 30 can be rotated against the urging means 26. Thereby, as shown in FIG. 16, the dust removal bar 30d can be arranged at a position away from the valley portion 15b.

  In the vacuum cleaner 1 having the above-described configuration, when the electric blower 6 is driven, air containing dust is sucked from the suction port body 5 and guided to the dust collecting chamber 10. The air flowing into the dust collection chamber 10 passes through the pleated filter 13 and is exhausted to the outside through the electric blower 6. At this time, dust adheres to the upstream surface (inlet 10a side) of the filter medium 15 of the pleat filter 13. Further, the dust removal bar 30 d of the dust removal member 30 is in close contact with the valley 15 b on the upstream side of the pleated filter 13.

  When the electric blower 6 is stopped and the main body unit 2 is opened, the operation unit 30f is operated by the user. Thereby, as shown in FIG. 16, the dust removal bar 30d of the dust removal member 30 is separated from the valley 15b, and the dust accumulated in the valley 15b on the upstream side of the filter medium 15 is removed. Then, the pleated filter 13 is separated from the dust collection chamber 10 and the dust in the dust collection chamber 10 is discarded.

  According to the present embodiment, as in the first embodiment, the dust removing member 30 is provided that moves between a position in contact with the valley 15b on the inflow port 10a side of the pleat filter 13 and a position away from the valley 15b. Therefore, the dust removing member 30 removes the dust D accumulated in the valley 15b away from the valley 15b. For this reason, the dust D remaining in the valley portion 15b can be reduced. Thereby, the frequency | count of maintenance of the pleat filter 13 can be reduced, and the damage at the time of a maintenance can be reduced, and the pleat filter 13 can be used for a long period of time. Therefore, the convenience of the vacuum cleaner 1 can be improved.

  In the present embodiment, the dust removing member 30 may be moved by driving a motor. Further, the dust removing member 30 may be moved in parallel.

  In the first and second embodiments, the dust removing member 30 is moved, but the pleated filter 13 may be moved. That is, it is only necessary that the dust removing member 30 is moved relative to the pleated filter 13.

  According to this invention, it can utilize for the vacuum cleaner provided with the pleat filter.

The perspective view which shows the vacuum cleaner of 1st Embodiment of this invention. Side surface sectional drawing which shows the main-body part of the vacuum cleaner of 1st Embodiment of this invention. The perspective view which shows the pleat filter of the vacuum cleaner of 1st Embodiment of this invention. The top view which shows the dust removal apparatus of the vacuum cleaner of 1st Embodiment of this invention. Front sectional drawing which shows the dust removal apparatus of the vacuum cleaner of 1st Embodiment of this invention. The top view which shows the dust removal member of the vacuum cleaner of 1st Embodiment of this invention EE sectional view of FIG. The figure explaining the dust removal operation | movement of the pleat filter of the vacuum cleaner of 1st Embodiment of this invention. The figure explaining the dust removal operation | movement of the pleat filter of the vacuum cleaner of 1st Embodiment of this invention. The side view which shows the dust collection chamber of the vacuum cleaner of 2nd Embodiment of this invention The rear view which shows the dust collection chamber of the vacuum cleaner of 2nd Embodiment of this invention AA sectional view of FIG. BB sectional view of FIG. CC sectional view of FIG. DD sectional view of FIG. Side surface sectional drawing which shows operation | movement of the dust removal member of the vacuum cleaner of 2nd Embodiment of this invention. The figure explaining the dust removal operation | movement of the pleat filter of the conventional vacuum cleaner The figure explaining the dust removal operation | movement of the pleat filter of the conventional vacuum cleaner

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner 2 Main-body part 3 Connection hose 4 Extension pipe 5 Suction inlet 6 Electric blower 10 Dust collection chamber 10a Inlet 10b Outlet 11 Dust collection container 11c Inner cylinder 12 Communication path 13 Pleated filter 15 Filter medium 15a Mountain part 15b Valley Part 20 Dust removal device 22 Rotating body 23 Gear 24 Contact member 26 Biasing means 30 Dust removal member 30d Dust removal bar

Claims (7)

An electric blower,
A dust collection chamber having an inlet and an outlet for an air flow generated by driving the electric blower, and communicating with the electric blower via the outlet;
A pleat filter disposed in an air flow path between the inflow port and the electric blower;
A dust removing member capable of moving between a position in contact with the valley on the inlet side of the pleat filter and a position away from the valley;
A vacuum cleaner characterized by comprising:   A contact member that strikes the pleat filter while relatively moving on the outlet side of the pleat filter and drops dust is provided, and the dust removing member is separated from the valley portion in conjunction with the relative movement of the contact member with respect to the pleat filter. The electric vacuum cleaner according to claim 1.   The vacuum cleaner according to claim 2, wherein the dust removing member is in contact with the valley when the contact member is in contact with the pleated filter.   The vacuum cleaner according to claim 1, further comprising an urging unit that urges the dust removing member in a direction in contact with the valley portion.   The dust collection chamber includes a detachable dust collection container, and forms a swirling airflow in the dust collection container, and the pleat filter is disposed downstream of the dust collection container. Item 5. The vacuum cleaner according to any one of Items 4 to 6.   The vacuum cleaner according to any one of claims 1 to 5, wherein the pleated filter has the troughs provided radially at predetermined angular intervals.   The vacuum cleaner according to any one of claims 1 to 5, wherein in the pleated filter, the valleys are provided in parallel at a predetermined interval.

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