JP2012034758A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner highly efficiently removing dust attached to a filter with low noise.SOLUTION: A plurality of dust removal elements 55 oscillated at different phases are abutted on the folds 41 of a filter 40 with a waveform cross section, and the folds 41 are oscillated at phases different for each fold. Thus, the dust removal of the filter 40 can be effectively performed with low noise.

Description

  The present invention relates to a vacuum cleaner provided with a filter for filtering dust.

  In the field of electric vacuum cleaners, many methods for removing dust by applying vibration to a filter have been proposed as means for preventing clogging of the filter. For example, there has been proposed a vacuum cleaner provided with dust removing means for vibrating a plurality of claw portions fitted in respective folds of a filter in which a cross-section is bent into a wave shape to form a plurality of folds (for example, the following patents) Reference 1).

  FIG. 7 shows a schematic diagram of a conventional cleaner body described in Patent Document 1. As shown in FIG. FIG. 8 shows a perspective view of the filter device of the conventional vacuum cleaner.

  As shown in FIGS. 7 and 8, a filter device 111 that supplements dust sucked by the electric blower 110 and a vibrator 112 that vibrates the filter device 111 are provided, and the vibrator is driven before or after the electric blower 110 is driven. 112 is configured to vibrate the filter device 111 to remove dust trapped in the filter device 111.

  The filter device 111 includes a rectangular frame frame 113, a sheet body 116 provided in the frame frame 113 and bent into a wave shape to form a plurality of protrusions 114 and recesses 115, and the vibrator 112 on the sheet body 116. A vibration transmission member 117 that transmits vibration is attached.

  The vibrator 112 includes a vibration motor (not shown) inside, and is arranged in parallel with the filter device 111.

  The vibration transmission member 117 includes a plurality of claw portions 118 that are fitted in the recesses 115 of the sheet body 116 and a transmission protrusion 119 that directly receives vibration from the vibrator 112.

  The vibration of the vibrator 112 is transmitted from the transmission projection 119 to the vibration transmission member 117, and this vibration is transmitted from the claw portion 118 to the sheet body 116, thereby removing dust captured by the sheet body 116. Yes.

JP 2004-121621 A

  However, even the conventional vacuum cleaner described in Patent Document 1 still has room for improvement from the viewpoint of increasing the efficiency of dust removal and reducing noise.

That is, as described above, in the electric vacuum cleaner described in Patent Document 1, the vibration of the vibrator 112 is received by the transmission protrusion 119 of the vibration transmission member 117, and the claw portion 118 is vibrated to form the sheet body 116. Tell. As described above, when all the claw portions 118 and the entire sheet body 116 are simultaneously moved and vibrated in the same direction, the dust adhering so as to be sandwiched between the upstream side of the protrusion 114 of the sheet body 116 (the concave shape on the upstream side) It moves in synchronism while attached to the sheet body 116. For this reason, there is a case in which the dust vibrates without being separated from the sheet body 116 and the dust cannot be removed.

  Moreover, since each member vibrates in synchronization with the vibration of the vibrator 112, the entire filter device 111 as a support portion is vibrated. In addition, not only the filter device 111 but also the entire vacuum cleaner that supports the filter device 111 is vibrated, causing noise.

  The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to provide a vacuum cleaner that removes dust adhering to a filter with low noise and high efficiency.

  In order to solve the above-described problems of the related art, the present invention is an electric blower, a filter having a plurality of corrugations in cross-sectional shape, and a filter that supplements dust sucked by the electric blower, and attached to the filter. A dust removing means for removing dust, the dust removing means having a plurality of converters that vibrate in different phases in a direction substantially perpendicular to the pleats of the filter, There are provided a vacuum cleaner having a plurality of dust removers that move in conjunction with each of the converters, and the folds are brought into contact with the dust removers to vibrate at different phases for each fold ( Claim 1).

  As described above, in the electric vacuum cleaner of the present invention, since the pitch between adjacent pleats is changed by causing the filter folds to vibrate at different phases, the pressure change due to the volume change between the pleat valleys is changed. appear. That is, when the pitch narrows, the internal pressure of the valley increases, and when the pitch widens, the internal pressure of the valley decreases. This pressure change peels off the dust adhering to the filter membrane through the filter membrane, and the dust easily peels off.

  Further, the pressure change described above causes the filter membrane to deform outwardly when the internal pressure increases, and causes the filter membrane to deform inward when the internal pressure decreases. The character angle changes, and acts to peel off dust deposited on the filter membrane from the filter membrane.

  Further, since the dust remover and the pleats are vibrated by the vibration operation of the plurality of conversion units having different phases, the vibrations are canceled out to the outside, and noise generation due to the vibrations can be prevented. Therefore, this invention can provide the vacuum cleaner which removes the dust adhering to a filter with low noise and high efficiency.

  In addition, from the viewpoint of obtaining the above-described effect of the present invention more reliably, in the vacuum cleaner of the present invention, the dust removing means has two converters having a phase difference of approximately 180 ° in a direction substantially orthogonal to the filter folds. Drive means, and two dust removers that move in conjunction with each of the two converters, wherein one of the two dust removers vibrates odd-numbered folds of the filter, and the other Preferably, the dust remover vibrates even-numbered pleats of the filter.

  With this configuration, the vibration direction of adjacent pleats is opposite, and the pitch change between the pleats is maximized. Therefore, the dust removal effect according to the above-described claim 1 becomes more remarkable. In addition, since the mutual operation of the two conversion units and the mutual operation of the two dust removers are opposite to each other, the vibration canceling action to the outside works efficiently and the vibration isolation effect is also improved.

  Moreover, from the viewpoint of obtaining the above-described effect of the present invention more reliably, in the electric vacuum cleaner of the present invention, it is preferable that the dust remover vibrates a ridge line portion on the downstream side of the filter. ).

  When filtering dust with a filter whose cross-sectional shape is folded into a corrugated shape, the dust that tries to adhere to the filter membrane moves to the downstream side of the inclined portion of the corrugated filter membrane on the upstream side of the filter, and finally the membrane valley. It tends to move and adhere to the part. That is, the filter membrane trough where the dust collects corresponds to the fold ridge line portion on the downstream side of the filter. Therefore, by vibrating the ridge line portion on the downstream side of the filter, the vibration acts strongly on the dust that tends to accumulate on the upstream side of the ridge line portion, and the dust adhering to the filter membrane is easily peeled off. Therefore, efficient dust removal becomes possible.

  Further, from the viewpoint of obtaining the above-described effect of the present invention more reliably, in the electric vacuum cleaner of the present invention, it is preferable that the dust remover vibrates the ridge line portion of the pleat on the upstream side of the filter. ).

  By adopting this configuration, the pitch of the pleats on the upstream side of the filter changes, so that the angle between the valleys between the pleats on the upstream side changes, and dust that adheres and accumulates on the filter membrane easily peels off from the filter membrane. . Therefore, efficient dust removal becomes possible.

  In addition to the effects of the present invention described above, from the viewpoint of cost reduction and ease of manufacture, in the vacuum cleaner of the present invention, the driving means includes a single electric rotating motor and rotation of the motor. It is preferable that a plurality of N conversion units that convert to reciprocating linear drive are provided, and the plurality of conversion units are configured such that the phase angle of each reciprocating operation differs by about 360 ° / N.

  With this configuration, a single electric motor can be used, so that the structure is simple and the cost can be reduced. Moreover, since the phase setting of the reciprocating operation of the plurality of conversion units is converted from a single electric motor, it can be set structurally, no electric control setting is required, and there is no phase shift.

  Moreover, from the viewpoint of obtaining the above-described effect of the present invention more reliably, in the electric vacuum cleaner of the present invention, the dust remover has the pleats and pleats along a direction substantially perpendicular to the ridgeline of the pleats of the filter. Preferably, the claw portion includes a pair of plate-shaped protrusions so as to be sandwiched from both sides of the fold with respect to the contact target fold. ).

  With this configuration, when only the pleats to be contacted are vibrated by the dust remover, there is no need to structurally join the claw portion and the pleats, so that the assembly and maintenance of the parts are facilitated. In addition, since a gap can be provided between the plate-like protrusion and the pleat to be contacted, when the dust remover is reciprocally oscillated, an impact caused by the collision between the dust remover and the pleat can be applied to the filter membrane. The dust can be efficiently removed by peeling off the dust.

  In addition, from the viewpoint of obtaining the above-described effect of the present invention more reliably, in the vacuum cleaner of the present invention, an elastic means is provided in a vibration transmission path between the conversion unit and the dust remover, and the elastic means is interposed between the elastic means and the vacuum cleaner. It is preferable to transmit the vibration of the converter to the dust remover.

  As described above, the vacuum cleaner of the present invention is configured to transmit the drive of the conversion unit to the dust remover via the elastic means, so that the resonance condition is mainly determined from the spring property of the elastic means and the weight of the dust remover. Thus, the amplitude of the dust remover can be increased by bringing the frequency of the driving means closer to this resonance frequency. Therefore, the filter provided in the vicinity of the dust remover vibrates greatly, and dust can be efficiently removed.

  Moreover, since the reciprocating drive of the conversion part is transmitted to the dust remover via the elastic means, no collision sound is generated between the conversion part and the dust remover. Therefore, this invention can provide the vacuum cleaner which removes the dust adhering to a filter with low noise and high efficiency.

  According to the present invention, it is possible to provide a vacuum cleaner that removes dust adhering to a filter with low noise and high efficiency.

Overall view of the electric vacuum cleaner according to Embodiment 1 of the present invention Sectional drawing which shows the structure of the main part of the vacuum cleaner (A) The perspective view which shows the filter and dust removal means of the vacuum cleaner, (b) The perspective view which abbreviate | omitted a part of the filter and dust removal means (A) Front view of filter and dust removing means of the vacuum cleaner, (b) AA sectional view of the filter and dust removing means, (c) BB sectional view of the filter and dust removing means, (d) The same CC sectional view of filter and dust removing means Motor rotation angle and stroke characteristics diagram of dust cleaner of the vacuum cleaner (A) Schematic diagram showing the operation of the vacuum cleaner filter and dust remover at a motor angle of 0 degrees or 180 degrees, (b) The operation of the vacuum cleaner filter and dust remover at a motor angle of 90 degrees. Schematic diagram (c) Schematic diagram showing the operation of the vacuum cleaner filter and dust remover at a motor angle of 270 degrees. Schematic diagram that closes the configuration of the main parts of a conventional vacuum cleaner The perspective view of the filter apparatus of the conventional vacuum cleaner

  Hereinafter, a preferred embodiment of a vacuum cleaner of the present invention will be described in detail with reference to the drawings. In the following description, the same or corresponding parts are denoted by the same reference numerals, and redundant description is omitted.

(First embodiment)
FIG. 1 is an overall view showing a first embodiment of a vacuum cleaner according to the present invention, FIG. 2 is a cross-sectional view showing the configuration of the main part of the vacuum cleaner, and FIG. FIG. 3B is a perspective view of the filter and a part of the dust removal means omitted, FIG. 4A is a front view of the filter and the dust removal means of the vacuum cleaner, and FIG. ) Is an AA cross-sectional view of the filter and dust removing means, FIG. 4C is a BB cross-sectional view of the filter and dust removing means, and FIG. 4D is a CC cross-sectional view of the filter and dust removing means. is there.

  As shown in FIG. 1, wheels 3 and casters 4 are attached to the outside of the cleaner body 1, and the cleaner body 1 can freely move on the floor surface. A suction hose 7 and an extension tube 8 are sequentially connected to a suction port 6 provided below the dust collection case 5 installation portion, and a suction tool 9 is attached to the tip of the extension tube 8.

  As shown in FIG. 2, an electric blower 21 is built in the vacuum cleaner main body 1, and a dust collection case 5 is disposed on the upstream side of the electric blower 21 through a partition wall 26 having a vent 22. Is detachably installed. Then, by operating the electric blower 21, dust on the floor surface of the house can be sucked, and the dust collecting case 5 introduces air containing the sucked dust, centrifuges and deposits the dust, and Filter out fine dust. The filtered air is exhausted from an exhaust outlet (not shown) downstream of the electric blower 21 (a cyclonic vacuum cleaner).

The dust collection case 5 includes a hollow cylindrical dust collection box 31 having a lower intake port 30 and a dust collection lid 33 having an upper exhaust port 32. The dust collection case 5 is attached to the cleaner body 1. In the mounted state, the intake port 30 communicates with the suction port 6, and the exhaust port 32 communicates with the vent port 22.

  The dust collection box 31 is provided with a middle case 34 in which hollow cylinders and hollow cones having different diameters are stacked in multiple stages. The middle case 34 includes a filter housing case 35, an inclined cylinder A36, and a primary cylinder in order from the top. The filter 37, the inclined cylinder B38, and the fine dust cylinder 39 are connected in series.

  The filter housing case 35 contains the filter 40 inside, and the outer periphery is housed along the upper end of the inner surface of the dust collection box 31. The outer surface of the filter housing case 35 and the inner surface of the dust collection box 31 are sealed members (not shown). It is arranged so as to close the gap.

  The inclined cylinder A36 has a hollow conical shape. When the dust captured by the filter 40 is removed, the dust falling from the filter 40 is transferred to the primary filter 37, the inclined cylinder B38, and the fine dust cylinder 39. A slope for guiding is constructed inside.

  The primary filter 37 has a cylindrical shape having minute through-holes on the entire surface, and allows air to pass from the outer periphery of the cylinder to the inside of the cylinder to generate relatively large dust (coarse dust, hair, hair, etc.) Dust).

  The inclined cylinder B38 has a hollow conical shape like the inclined cylinder A36, and has an inclined surface for guiding dust falling from the filter 40 to the fine dust cylinder 39 inside. The fine dust cylinder 39 has a cylindrical shape and stores dust guided from the inclined cylinder B38. A packing 80 is provided on the bottom inner surface of the dust collection box 31 to seal between the bottom surface of the fine dust cylinder 39.

  The intake port 30 is opened so that the suction airflow flows in the tangential direction of the inner surface of the dust collection box 31. The suction airflow finally turns while swirling the flow path formed by the gap between the outer surface of each of the inclined cylinder A36, the primary filter 37, the inclined cylinder B38, and the fine dust cylinder 39 and the inner surface of the dust collection box 31. Is sucked into the cylinder by the primary filter 37 and flows toward the filter 40.

  The dust in the suction airflow that flows into the dust collection box 31 from the intake port 30 moves to the lower part of the dust collection box 31 while turning so as to be pressed against the inner surface of the dust collection box 31 by centrifugal force, and the dust collection box 31 is accumulated at the bottom. The lower part of the primary filter 37 is provided with a collar part 42 so that the accumulated dust does not rise. That is, the lower part of the collar part 42 is a dust collecting part, and the upper part is a centrifugal separation part.

  Further, the bottom of the dust collection box 31 is provided with an openable / closable bottom lid 43. When the dust accumulated in the dust collection box 31 is discarded, the bottom lid 43 can be opened and easily discarded. . Further, since the bottom of the fine dust cylinder 39 is also opened, the dust accumulated therein can be discarded at the same time.

  On the other hand, dust (fine dust) such as fine dust, pollen, and mite droppings, which are difficult to be centrifuged, remains partly entangled with coarse dust deposited on the bottom of the dust collection box 31 and partly 1 along with the air flow. Next, it passes through the filter 37 and flows to the filter 40, filtered by the filter 40, and deposited while adhering to the surface of the filter 40.

  The dust collection lid 33 has a cylindrical shape and is airtightly attached to the upper part of the dust collection box 31. Inside, dust removing means 45 for removing dust adhering to the filter 40 by vibration is housed, and an electrical component (not shown) is housed in the inner lid 46.

Electrical components not shown are printed circuit boards, power supply terminals, charging components, motor driver elements,
There is an on / off switch or the like, and electricity is stored in the charging component from the cleaner body 1 through the power supply terminal, and the dust removing means 45 is driven by the electric power from the charging component. The drive control of the dust removing means 45 is driven by one of an instruction from a microcomputer (not shown) in the cleaner body 1 and an instruction from an on / off switch (not shown) of the dust collecting lid 33.

  Thus, the dust removing means 45 is configured to operate even when the power outlet (not shown) is pulled out or the dust collecting case 5 is removed by the function of the charging component.

  Next, details of the filter 40 and the dust removing means 45 will be described with reference to FIGS. 3, 4 (a), 4 (b), and 4 (c).

  As shown in FIGS. 3 and 4, dust removing means 45 is arranged in parallel to the filter 40 on the downstream side (upper part) of the disk-shaped filter 40. As the filter 40, a nonwoven fabric, pulp, glass fiber, HEPA filter, or the like can be used. However, in the first embodiment, a membrane formed by laminating a filter membrane in which a PTFE membrane excellent in dust separation properties is laminated on a nonwoven fabric is folded. The body 50 is integrally formed with resin inside the cylindrical frame 51.

  The dust removing means 45 is a dust removing means disposed so as to be orthogonal to the drive means 54 having a conversion unit 53 that converts the rotation of the electric motor 52 into two reciprocating linear drives whose phases are different by 180 degrees, and the ridge line of the fold 41 of the filter 40. It comprises a child A55a, a dust remover B55b, and an elastic means 56 that transmits the reciprocating drive of the drive means 54 to the dust remover A55a, the dust remover B55b via a rubber material.

  The dust remover A55a and the dust remover B55b are arranged in parallel with each other, and a plurality of claws 58 are provided below the square rod-like bone portions 57 arranged in the driving direction toward the valleys of the pleats 41 of the filter 40, respectively. It is arranged. The claw portion 58 is provided with a pair of plate-like protrusions so as to be sandwiched from both sides with respect to the ridge line of one row of pleats 41. The claw portion 58 of the dust remover A55a The pleat 41 is arranged. And dust remover B55b has arrange | positioned the plate-shaped protrusion in the pleat 41 of the even-numbered row | line | column.

  In the upper center of the dust remover A55a and the dust remover B55b, a groove portion configured in the longitudinal direction is provided, and an elastic means 56 is fitted into the groove portion so as to receive vibration from the conversion portion 53. The dust removers A55a and B55b arranged in parallel are movably supported between the three rails 61. Specifically, the dust blades 60 are slidably fitted into the rails 61 arranged on both sides of the bone portion 57, so that both dust removers are movable along the rail 61.

  The rail 61 is supported by the inner lid 46 shown in FIG. 2, and both ends thereof also have a function of pressing and fixing the frame body 51 of the filter 40 from above. The support portion 59 of the electric motor 52 is also integrally formed with the rail 61 and supported by the inner lid 46.

  One of the conversion units 53 includes an eccentric cam A63a fixed to the shaft center 62 of the electric motor 52, and a mover A64a that inverts the eccentric cam A63a to convert rotation into a reciprocating drive. The other of 53, the eccentric cam B63b fixed to the shaft center 62 so that the eccentric direction differs from the eccentric cam A63a by 180 degrees, and the movable cam that inverts the eccentric cam B63b to convert the rotation into a reciprocating drive. It is comprised from child B64b.

  The mover A 64 a and the mover B 64 b are slidably supported in the respective guide grooves 66 in the guide box 65, and the guide box 65 is fixed to the support portion 59.

  One of the above-mentioned elastic means 56 is disposed so that the movable element A64a and the dust remover A55a are detachably connected to transmit vibration. The other of the elastic means 56 is arranged so that the movable element B64b and the dust remover B55b are detachably connected to transmit vibration. The allowable deformation amount of the elastic means 56 is desirably set larger than the reciprocating stroke of the mover 64. This is to prevent the electric motor 52 from being locked and damaging the motor winding when the dust remover 55 stops moving due to some trouble.

  When the electric motor 52 is operated in the above configuration, the shaft center 62 rotates and the eccentric cam A 63a and the eccentric cam B 64b rotate, so that the eccentric amount (for example, 1 mm) of the electric motor 52 and the eccentric cam is doubled. The movable element A 64 a and the movable element B 64 b are driven to reciprocate along the guide grooves 66 with a stroke (for example, 2 mm). At this time, since the eccentric angles of the eccentric cam A63a and the eccentric cam B64b are fixed 180 degrees different from each other, the reciprocating operation of the movable element A64a and the movable element B64b is 180 degrees out of phase and opposite to each other. Will be movable.

  The dust remover A55a and the dust remover B55b are driven along the rail 61 in accordance with the operations of the mover A64a and the mover B64b. And the nail | claw part 58 of dust remover A55a and dust remover B55b contacts the side surface of the pleat 41 of the filter 40, and the pleat 41 is vibrated.

  Next, the dust removal operation will be described with reference to FIGS. 5 and 6. FIG. 5 is a characteristic diagram of the rotation angle and stroke of the electric motor of the dust remover A55a and dust remover B55b of the vacuum cleaner, and FIG. FIG. 6B is a schematic diagram illustrating the operation at an angle of 0 degrees and 180 degrees, FIG. 6B is a schematic diagram illustrating the operation of the vacuum cleaner filter, the dust remover A55a, and the dust remover B55b at an electric motor angle of 90 degrees. (C) is a schematic diagram showing the operation of the vacuum cleaner filter, dust remover A55a and dust remover B55b at an electric motor angle of 270 degrees.

  As shown in FIG. 5, the stroke 70 of the reciprocating drive of the dust remover A55a operates in a sinusoidal manner with a stroke (for example, 2 mm) that is twice the eccentric amount (for example, 1 mm) of the electric motor and the eccentric cam A. The cycle coincides with the rotation cycle of the electric motor. However, the stroke is affected and changed by the deformation of the elastic means, the play between the eccentric cam A and the mover A, and the resonance action.

  Since the reciprocating drive stroke 71 of the dust remover B55b changes the eccentric angle of the eccentric cam A and the eccentric cam B by 180 degrees, the operation is out of phase with the dust remover A55a by 180 degrees. The stroke is twice the eccentric amount of the electric motor and the eccentric cam B. In this embodiment, the eccentric cam A and the eccentric cam B have the same shape, so the strokes of the dust remover A55a and the dust remover B55b are almost the same. It becomes.

Next, the vibration operation of the filter 40 will be described with reference to FIG.
FIG. 6A shows a state in which the angle of the electric motor in FIG. 5 is 0 degrees and 180 degrees. That is, the stroke of the dust remover A55a and the dust remover B55b is in a neutral position. The claw portion 58 (solid line) of the dust remover A55a is arranged to operate 41 (1), 41 (3), etc., which are odd rows of the pleats 41 of the filter 40. Further, the claw portion 58 (broken line) of the dust remover B55b is arranged to move 41 (2), 41 (4), etc., which are even rows of pleats 41.

  Since the claw portion 58 does not act on the pleat 41 at the angle of 0 degrees of the electric motor, the pitches Pa and Pb of the pleat 41 are constant at the original interval.

FIG. 6B shows a state where the electric motor is rotated 90 degrees. Here, the positive direction of the stroke indicates the right direction in the figure, and the attached direction indicates the left direction in the figure. The stroke of the dust remover A55a is the maximum value (+1 mm), and conversely, the stroke of the dust remover B55b is the minimum value (-1 mm). Therefore, the pitch Pa between the pleats 41 (1) and the pleats 41 (2) is narrowed (-2 mm), and the pitch Pb between the pleats 41 (2) and the pleats 41 (3) is widened (+2 mm). This operation pattern acts on all the pleats 41 of the entire filter 40 simultaneously.

  FIG. 6C shows a state where the electric motor has rotated 270 degrees. In this case, the stroke of the dust remover A55a is the minimum value (-1 mm), and conversely, the stroke of the dust remover B55b is the maximum value (+1 mm). Accordingly, the pitch Pa between the folds 41 (1) and 41 (2) is widened (+2 mm), and the pitch Pb between the folds 41 (2) and the folds 41 (3) is narrowed (-2 mm).

  As described above, the phase of the reciprocating vibration between the dust remover A55a and the dust remover B55b is different by 180 degrees, so that the pitch of the adjacent pleats 41 between the electric motor makes one turn is the difference between the dust remover A55a and the dust remover B55b. It changes by the difference of each other's stroke. Therefore, the following actions and effects can be expected.

  (1) When the fold ridge line portion on the downstream side of the filter is greatly displaced, vibration is strongly applied to the dust that tends to accumulate on the upstream side of the fold ridge line portion, and the dust adhering to the filter membrane is easily peeled off. Therefore, efficient dust removal becomes possible.

  (2) Since the pitch between adjacent pleats changes greatly, a pressure change occurs due to a volume change in the fold valleys. That is, when the pitch narrows, the internal pressure of the valley increases, and when the pitch widens, the internal pressure of the valley decreases. This pressure change peels off the dust adhering to the filter membrane through the filter membrane, and the dust easily peels off.

  (3) The pressure change described above causes the filter membrane to deform outward when the internal pressure increases, and deforms the filter membrane inward when the internal pressure decreases. The V-shaped angle changes and acts to peel off the dust deposited and deposited on the filter membrane.

  (4) Since the pitch of the pleats changes at the same time as the pleat angle, the shape of the dust accumulated so as to be sandwiched between the pleat valleys on the upstream side of the filter changes in the vibration cycle, and the solid dust It tends to collapse. As a result, dust is removed from the filter.

  Thus, the dust removal action of the dust remover on the filter is increased, and efficient dust removal is possible. Further, since the eccentric element, the movable element, and the dust remover operate as a pair whose phases are shifted by 180 degrees, the vibrations are canceled by mutually vibrating in the opposite directions, so that vibration transmission to the outside is greatly reduced. . Therefore, since the vibration of the dust collection box and the cleaner body can be reduced, the generation of noise can be prevented.

  As mentioned above, although the filter of 1st Embodiment in the electric vacuum cleaner of this invention was demonstrated, the vacuum cleaner of this invention is not limited to the pleated filter of 1st Embodiment mentioned above.

  For example, a flat filter may be used, and the same effect can be obtained as long as vibrations of a plurality of dust removers having different phases are transmitted.

  Moreover, although the dust removal means of 1st Embodiment in the electrical-vacuum cleaner of this invention was comprised by two conversion parts from which a phase differs 180 degree | times, and two dust removal elements, for example, three conversion parts from which a phase differs by 120 degree | times and In addition, it may be configured by three dust removers, and further, four or more N converters and dust removers may be configured such that the phase angle of each reciprocating operation differs by about 360 ° / N. Good.

Furthermore, although the dust remover of the first embodiment in the electric vacuum cleaner of the present invention is configured to vibrate the vicinity of the ridge line portion of the fold on the downstream side of the filter, it may be configured to vibrate the ridge line portion of the pleat on the upstream side of the filter. Good. In this case, since the pitch of the pleats on the upstream side of the filter changes, the angle between the valleys between the pleats on the upstream side changes directly, and the dust that adheres and accumulates here is more easily separated from the filter membrane. .

  In addition, although one dust remover of the first embodiment in the electric vacuum cleaner of the present invention has the claw portions arranged to vibrate the filter pleats every other row, all the pleats may be vibrated. In this case, since the two dust removers vibrate by changing the phase by 180 degrees with respect to one pleat, a twisting force is applied to the pleat, and the dust is more easily peeled off. However, since the load on the filter and the electric motor increases, it is necessary to consider such as reducing the dust remover stroke and increasing the gap between the dust remover claw and the pleat.

  In addition, although the electric motor and the eccentric cam are used as the driving means of the first embodiment in the electric vacuum cleaner of the present invention, a plurality of linear reciprocating drives having different phases are driven using a linear reciprocating driving means such as a linear motor. May be.

  Furthermore, although rubber is used for the elastic means of the first embodiment of the electric vacuum cleaner of the present invention, a metal compression spring, a resin spring, an air spring such as a bellows or a piston / cylinder filled with gas is used. May be.

  Moreover, although the conversion part of 1st Embodiment in the electric vacuum cleaner of this invention was comprised so that rotation of an electric motor might be converted into reciprocating drive by the needle | mover which inscribed the eccentric cam, rotation of an electric motor was comprised. Alternatively, the plurality of movable elements may be moved by converting into reciprocating motion by a crankshaft and a connecting rod having different phases.

  The electric vacuum cleaner of the present invention can be used for various vacuum cleaners because dust adhering to the filtration filter can be removed by vibrating with the dust removing means.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 21 Electric blower 40 Filter 41 Fold 45 Dust removal means 53 Conversion part 54 Drive means 55a Dust remover A
55b Dust remover B
56 Elastic means

Claims (7)

An electric blower,
A filter whose cross-sectional shape is corrugated and has a plurality of pleats to capture dust sucked by the electric blower;
A dust removing means for removing dust adhering to the filter;
The dust removing means includes
Driving means having a plurality of converters that vibrate in different phases in directions substantially orthogonal to the folds of the filter;
A plurality of dust removers that move close to the filter and move in conjunction with the plurality of converters,
An electric vacuum cleaner in which the pleats are brought into contact with the dust remover so as to vibrate with different phases for each fold. The dust removing means includes
Driving means having two converters having a phase difference of about 180 ° in a direction substantially perpendicular to the folds of the filter;
Two dust removers that move in conjunction with each of the two converters,
The vacuum cleaner according to claim 1, wherein one of the two dust removers vibrates odd-numbered pleats of the filter, and the other dust remover vibrates even-numbered pleats of the filter. The dust remover is
The vacuum cleaner according to claim 1 or 2, wherein a ridge line portion of a fold downstream of the filter is vibrated. The dust remover is
The vacuum cleaner according to claim 1 or 2, wherein a ridge line portion of the pleat upstream of the filter is vibrated. The driving means includes a single electric rotating motor;
A plurality of N converters for converting the rotation of the motor into a reciprocating linear drive;
The vacuum cleaner according to any one of claims 1 to 4, wherein the plurality of conversion units have a phase angle of each reciprocating operation that is different by approximately 360 ° / N. The dust remover is
A plurality of claw portions projecting in a valley portion between the pleats along a direction substantially orthogonal to the ridge line of the pleats of the filter,
The vacuum cleaner according to any one of claims 1 to 5, wherein the claw portion includes a pair of plate-like protrusions so as to be sandwiched from both sides of the fold with respect to the contact fold. The elastic means is provided in the vibration transmission path between the said conversion part and the said dust remover, The vibration of the said conversion part is transmitted to the said dust remover via the said elastic means. The vacuum cleaner as described in.