JP2006255041A - Electric vacuum cleaner - Google Patents

Abstract

【Task】
A preferable dust removing mechanism for a paper bag type dust collecting filter in an electric vacuum cleaner is realized.
[Solution]
The dust remover 17 swingably provided inside the ventilation window 8a that sucks out air from the dust collection chamber 11 is repeatedly pressed and swung by the contact 28 of the dust remover driving drum 27 provided at the bottom of the dust collection chamber. The filter paper bag 16b of the paper bag type dust collecting filter 16 which is inflated by collecting dust is configured to vibrate and remove dust.
[Selection] Figure 2

Description

  The present invention relates to a vacuum cleaner using a paper bag type dust collecting filter.

  Recent vacuum cleaners are mainly in the form of using a paper bag type dust collection filter.

  The vacuum cleaner that uses the paper bag type dust collection filter is convenient to handle because the dust collection filter can be removed and disposable (replaced with a new dust collection filter) when the inside of the paper bag is full due to the captured dust. is there.

  However, a paper bag type dust collection filter causes a clogging phenomenon due to fine dust adhering to the filtration surface before the inside of the paper bag is filled with dust and increases the airflow resistance. It has been proposed to provide a dust removal mechanism that removes the fine dust adhering to the filtration surface by applying vibration to the bottom of the paper bag.

  The dust removal mechanism is configured to vibrate the dust attached to the inner surface (filtering surface) of the paper bag dust collection filter by vibrating the dust remover that acts on the outer peripheral surface of the paper bag dust collection filter. As the dust remover driving mechanism, an electromagnetic driving mechanism configured to vibrate by electromagnetic vibration and a cord reel driving mechanism configured to transmit and vibrate rotation of a cord reel used for winding a power cord are proposed. .

JP-A-5-192278 JP 2004-174268 A

  The dust removal mechanism that removes dust from the paper bag type dust collection filter is configured to generate vibration by applying a force from the outside to the outer peripheral surface of the dust collection filter. However, the paper bag type dust collection filter is inflated by the ventilation pressure in the dust collection chamber. It is difficult to repeatedly apply a large force to the outside from outside.

  Therefore, the dust removal mechanism can efficiently generate vibrations in the paper bag type dust collecting filter, and can efficiently shake down dust with small vibrations. The shaken dust is again used in subsequent use (ventilation). It is desirable to prevent the air from adhering to the filtration surface and clogging.

  Further, it is desirable that the dust remover drive mechanism in the dust removal mechanism be configured so that it can be easily attached and accommodated in a limited space in the cleaner body.

  An object of the present invention is to remove dust that can efficiently generate vibration in a paper bag type dust collecting filter by rotating a cord reel that accommodates and accommodates a power cord. The purpose is to enable the mechanism to be easily mounted and accommodated in the vacuum cleaner body.

  It is another object of the present invention to provide a structure that can be easily mounted and accommodated in a small space below the dust collection chamber.

The present invention divides the inside of the cleaner body into a dust collection chamber and an electric blower chamber by a partition wall, and the dust collection chamber can be connected to a hose unit by a hose fitting member and is installed in the dust collection chamber A dust collection filter is configured to communicate with the hose fitting member, and a dust remover is disposed along the partition wall inside the ventilation window provided in the partition wall on the electric blower chamber side in the dust collection chamber. And the air blower provided in the electric blower chamber is configured to suck out air in the dust collection chamber through the ventilation window, and the dust remover is formed by a gear provided on a drum side plate in a cord reel unit provided in the electric blower chamber. The dust bag is swung by the rotation of the rotating dust remover drive drum, and the back side wall surface of the filter paper bag of the paper bag type dust collecting filter that has been collected and swollen is vibrated to shake the dust adhering to the back side wall surface. In to vacuum cleaner,
The dust remover drive drum is supported by a dust remover drive drum shaft support portion erected on the dust remover drive unit substrate, and the dust remover drive unit substrate supports the dust remover drive drum in the ventilation window in the lower case partition wall. The vacuum cleaner main body is disposed on the bottom wall of the lower case of the main body of the vacuum cleaner so as to face the lower end portion of the dust remover and be located on the dust collection chamber side of the lower side of the dust remover. It is characterized in that it is fitted and installed.

  The dust remover drive unit board is configured to contact the lower case of the main body via a dust remover drive unit packing so as to keep the dust collection chamber airtight.

  Further, the dust remover drive unit substrate is formed with a curved portion that is recessed inside the main body to form a part of a caster housing space that houses a part of the caster in the bottom of the lower case of the main body. To do.

The vacuum cleaner of the present invention
A dust removal mechanism that can efficiently generate vibration in a paper bag type dust collection filter by rotating a cord reel that wraps and accommodates a power cord, and that can efficiently shake off dust with a small vibration can be easily applied to the main body of the vacuum cleaner. Can be installed and housed,
Furthermore, it can be easily mounted and accommodated in a small space below the dust collection chamber.

The present invention divides the inside of a cleaner body into a dust collection chamber and an electric blower chamber, and the dust collection chamber can be connected to a hose unit by a hose fitting member and is installed in the dust collection chamber. Is configured to communicate with the hose fitting member, and the electric blower provided in the electric blower chamber is configured to suck out the air in the dust collection chamber so that the dust contained in the air flowing in through the hose unit is In the vacuum cleaner that is captured by the paper bag type dust collecting filter,
The inside of the filter paper bag of the paper bag type dust collection filter which is inflated by arranging a dust remover along the partition wall inside the ventilation window provided on the partition wall on the electric blower chamber side in the dust collection chamber Provide so that the side wall surface abuts,
A dust remover drive drum shaft support portion in which a dust remover drive drum that swings the dust remover by repeatedly pressing the rear surface of the dust remover via an elastic contactor on its outer peripheral surface is raised on the dust remover drive unit substrate. The lower case of the main body that constitutes the cleaner main body so that the dust remover driving drum is positioned on the dust collection chamber side below the ventilation window in the partition wall and faces the lower end portion of the dust remover It is configured to be fitted and installed so as to be inserted from the outside into the dust remover drive unit mounting window provided on the bottom wall of the drum, and is configured to be rotationally driven by a gear provided on the drum side plate in the cord reel unit,
The paper bag type dust collecting filter is formed in a cylindrical body with openings at both ends formed on the outer side of the coarse inner layer and formed into a cylindrical body with openings at both ends. A filter paper bag that is shaped into an oblong, rectangular flat shape and has a sealing edge that is folded back and closed so that the edge of the opening at both ends is rounded up is adhered to the rear side of the base paper, and the sealing edge that protrudes long from the base paper It is a structure that is folded back to the rear so that the protruding part in the direction of the part overlaps the back of the mouthpiece,
The dust collection chamber is configured to be installed in a posture in which a folded portion of the paper bag type dust collection filter is overlapped on the rear side of the filter paper bag of the filter paper bag so as to extend vertically and expand in a vertically long state. .

  FIG. 1 is an external view of the electric vacuum cleaner according to the first embodiment, and shows a stowed state in which the rear end surface is brought into contact with the floor and stood up. Reference numeral 1 denotes a vacuum cleaner main body, 2 a hose unit, 3 an extension pipe, and 4 a suction port.

  As will be described in detail later, the vacuum cleaner main body 1 includes a dust collection chamber in which an electric blower for intake air and a paper bag type dust collection filter are installed, and a dust removal mechanism. The vacuum cleaner main body 1 is used in a horizontally long posture (a posture during normal use) so as to travel on the floor surface by the main wheels 5 and casters 6. And this vacuum cleaner main body 1 raises the handle 7, and carries it.

  The hose unit 2 includes a main body connection pipe 2b that is fitted to the vacuum cleaner main body 1 so as to communicate with the dust collection chamber of the vacuum cleaner main body 1 at the base end of the hose 2a, and the extension pipe 3 is fitted to the tip. A hose grip 2c that is gripped during use (cleaning) is provided. The hose grip 2c includes an instruction switch (not shown) for controlling the operation of the electric blower.

  The extension tube 3 has a proximal end fitted to the hose grip 2c and a suction port 4 fitted to the distal end.

  2 to 4 are drawings showing a cross section of the cleaner body 1 and showing the internal structure, FIG. 2 is a longitudinal side view of the cleaner body 1 cut along the center, and FIG. 4 is a cross-sectional plan view cut to show the dust removal mechanism, and FIG. 4 is a longitudinal side view cut to show the dust remover drive mechanism of the dust removal mechanism in the cleaner body 1. Moreover, FIG. 5 is a vertical side view of the cleaner body 1 showing how the paper bag type dust collecting filter is attached and detached.

  The outer shell of the vacuum cleaner main body 1 is mainly composed of a main body lower case 8, a main body upper case 9, and a dust collection chamber lid 10. A dust collection chamber 11 is formed in the front half of the interior, and an electric blower chamber is formed in the rear half. 12 is formed. The partition wall that partitions the interior of the vacuum cleaner main body 1 into a dust collection chamber 11 and an electric blower chamber 12 extends upward from the bottom of the main body lower case 8 and has a lower case partition wall portion provided with a ventilation window 8a in the center. 8b and the upper case partition wall 9a extending downward from the main body upper case 9 are joined together.

  The dust collection chamber 11 is configured to be openable and closable by a dust collection chamber lid 10 with its upper part opened. The upper open edge of the dust collection chamber 11 is constituted by the lower case 8 of the main body, and a dust collection chamber lid packing 13 is installed on this edge, and the dust collection chamber is tilted so as to close the upper open end of the dust collection chamber 11. The lower end edge of the chamber lid 10 is brought into close contact with the airtight state.

  A hose fitting provided with a hose insertion port 14a penetrating the main wall connecting pipe 2b of the hose unit 2 so as to allow the hose 2a to communicate with the dust collection chamber 11 on the front wall of the dust collection chamber 11 A wearing member 14 is attached. The inner end of the hose fitting member 14 is located on the front side wall portion of the dust collection chamber 11, is exposed in the dust collection chamber 11, is inserted into the dust collection chamber 11 and is constrained by a filter clamp 15. The dust collecting filter 16 is configured to be in close contact with the mouthpiece 16a.

  A dust remover 17 is installed along the lower case partition wall 8b on the dust collection chamber 11 side of the ventilation window 8a in the lower case partition wall 8b. As shown in FIG. 6, the dust remover 17 is mainly composed of a rectangular lattice frame 17a having excellent air permeability, and supporting shafts 17b and 17c are provided on both sides of the upper end portion so as to protrude from the lower case. A paper bag-type dust collecting structure that is attached to the upper end portion of the partition wall portion 8b so as to be swingable, and that is swung by repeatedly pressing and driving the lower end portion from the back to expand in the dust collecting chamber 11. In this configuration, the outer peripheral surface of the filter paper bag 16b of the filter 16 (the back side wall surface portion facing the cover 16a of the swollen paper bag) is repeatedly pressed. Details of this dust remover drive mechanism will be described later.

In the dust collection chamber 11 configured as described above, the dust collection chamber lid 10 is opened and the paper bag type dust collection filter 16 is attached and detached. Paper bag type dust collecting filter 16, and mouth paper 16a forming the inlet window 16a _1, constituted by filtration bag 16b. The paper bag type dust collecting filter 16 is mounted by inserting the paper bag type dust collecting filter 16 into the dust collecting chamber 11 with the dust collecting chamber lid 10 raised and the upper side of the dust collecting chamber 11 opened. 16a a and a mouth-paper 16a to restrain the filter clamp 15 is brought into close contact with the inner end of the hose fitting member 14 to align the hose difference plug mouth 14a of the intake window 16a ₁ and the hose fitting member 14 of the mouth paper 16a Thus, the inside of the filter paper bag 16b and the hose 2a are communicated. Then, the dust collection chamber lid 10 is tilted to close the top of the dust collection chamber 11. The removal of the paper bag type dust collecting filter 16 mounted in this way is to restrain the cover 16a of the paper bag type dust collecting filter 16 by raising the dust collecting chamber lid 10 and opening the dust collecting chamber 11 upward. By operating the filter clamp 15 so as to release, the paper bag type dust collecting filter 16 is made free.

  The paper bag type dust collecting filter 16 used in the first embodiment will be described with reference to FIGS. 7 (a) to 7 (c) and FIGS. 8 (a) and 8 (b).

Filtration bags 16b, as described in JP Kokoku 7-85736, a rectangular filter paper having a suction port 16b ₁ formed in the cylindrical body of the openings at both ends, to the suction port 16b ₁ is flat squeezing the tubular body so as to be positioned (bent) while both the bent portions shaped in an elongated rectangular flat shape to the open end direction formed in the bellows 16b _2, gluing while wrapped for rounding the ends opening edge portion Thus, the sealing edge portion 16b ₃ to be closed is formed. The filtration paper bag 16b formed in a flat shape as is, to bond the plane in which the inlet 16b ₁ is positioned to match the inlet 16b ₁ to the intake window 16a ₁ on the rear side of the rectangular mouth paper 16a The protruding portion in the _three directions of the sealing edge 16b that protrudes long from the cover 16a is folded back to overlap the back of the cover 16a.

  The filter paper constituting the filter paper bag 16b has a three-layer structure in the first embodiment, and the inner layer on the inner side of the filter paper bag 16b is a coarse layer that traps relatively large dust, and the intermediate layer is It is an extremely fine layer for capturing fine dust, and the outer layer on the outside is a reinforcing layer.

Paper bag type dust collector filter 16 of this configuration, when the bulge cubic shape from a flat shape pressure becomes high in filtration paper bag 16 to the surrounding, with the opposite sides of the bellows 16b ₂ extending rearwardly The portion folded back so as to be overlapped on the rear side is restored and extends long in the direction protruding from the mouth plate 16a.

In the first embodiment, the paper bag type dust collecting filter 16 has a dust collecting posture in which the folded portion of the filter paper bag 16b so as to overlap the back side of the mouth paper 16a extends vertically and swells in a vertically long state. Install in the chamber 11. That is, in a state where the posture to run the cleaner body 1 by the main wheel 5 and rollers 6, part of the bellows 16b ₂ of filtration paper bag 16b is positioned on both lateral side direction, it is folded so as rounding both ends open end closed's sealing edge 16b ₃ is placed to fit to the dust collecting chamber 11 in a posture which is positioned in the vertical direction.

  In the electric blower chamber 12, an electric blower 18, a cord reel unit 19, and a control device 20 are incorporated.

  The electric blower 18 is attached to the lower case partition wall portion 8b in an airtight state via the anti-vibration rubber 21 so as to suck out the air in the dust collecting chamber 11 through the ventilation window 8a.

  The cord reel unit 19 includes a winding drum 23 that rotates and winds / unwinds the power cord 22, and drum side plates 24 and 25 provided on both ends of the winding drum 23. A drum side plate gear portion 25 a is integrally formed on the outer peripheral edge of the drum side plate 25. The cord reel unit 19 is placed beside the electric blower 18 so that the drum rotation axis is parallel to the bottom surface of the main body lower case 8 and is in a horizontal state.

  A specific configuration of the dust remover drive unit 26 constituting the dust remover drive mechanism that presses the dust remover 17 will be described with reference to FIGS. 9 and 10.

  The dust remover drive unit 26 includes a dust remover drive drum 27 that is driven to rotate by the rotation of the cord reel unit 19, and is provided on the outer periphery of the dust remover drive drum 27 by rotating the dust remover drive drum 27. The rear surface of the dust remover 17 is repeatedly pressed by a plurality of contacts 28 to swing the dust remover 17, and is located inside the dust collection chamber 11 below the ventilation window 8 a in the lower case partition wall 8. Then, it is fixed so as to be installed at the bottom of the main body lower case 8 so as to face the lower end portion of the dust remover 17, and is driven so as to swing the lattice frame 17a with the support shafts 17b and 17c as fulcrums. .

  The dust remover drive drum 27 raises dust remover drive drum shaft support portions 29a and 29b inside the dust remover drive unit substrate 29, and the dust remover drive drum 27 is placed between the dust remover drive drum shaft support portions 29a and 29b. Support in a rotatable state. The dust remover drive drum shaft 30 extended to the outside of the dust remover drive drum shaft support portion 29a is provided with a dust remover drive drum shaft gear 31 at the outer end thereof, and this dust removal drive unit 26 is assembled to the cleaner body 1. In this state, it functions to engage with the drum side plate gear portion 25a of the cord reel unit 19 and rotate the dust remover drive drum shaft 30 following the rotation of the drum side plate 25. The dust remover drum drive shaft 30 is engaged with the dust remover drive drum 27 via a one-way clutch (not shown) positioned in the dust remover drive drum 27, and the drum side plate 25 when the power cord 22 is pulled out. The rotation of the dust remover drive drum drive shaft 30 accompanying the rotation is transmitted to the dust remover drive drum 27, and the rotation of the dust remover drive drum drive shaft 30 accompanying the rotation of the drum side plate 25 when the power cord 22 is wound is the dust remover drive drum. 27 to prevent transmission.

  The plurality of contacts 28 provided on the outer periphery of the dust remover drive drum 27 are each attached with a base end portion on the outer periphery of the dust remover drive drum 27 and along the outer peripheral surface of the dust remover drive drum 27 in the downstream direction of the rotation direction. It is configured by an elastic plate which is inclined so as to be gradually separated and becomes higher and the rear end portion is sharply bent toward the outer peripheral surface of the dust remover driving drum 27 to form a chevron shape. The contact 28 has a great elasticity because the filter paper bag 16b of the paper bag type dust collecting filter 16 is filled (filled) and the filter paper bag 16b swells strongly to greatly swing the dust remover 17. The strength is such that it can be avoided that a large rotational resistance acts on the dust remover drive drum 27 by bending when the resistance acts. This prevents an excessive pulling resistance from being generated when the power cord 22 is pulled out.

  On both sides of the dust remover drive unit substrate 29 connecting the outer peripheral edge surfaces 29c, 29d of the dust remover drive drum shaft support portions 29a, 29b and the dust remover drive drum shaft support portions 29a, 29b in the dust remover drive unit substrate 29. The edge surface 29e is fitted so that the dust remover drive unit substrate 29 is inserted from below into a dust remover drive unit mounting window 8c formed so as to be connected to the dust collecting chamber 11 from the bottom wall of the lower case 8 of the main body. The dust collecting chamber 11 functions in such a manner as to abut against the lower case 8 of the main body to keep the dust collecting chamber 11 airtight, and the dust removing drive drum 27 between the dust remover driving drum shaft support portions 29a and 29b is placed in the dust collecting chamber 11. The dust remover 17 is positioned behind the lower end portion. Moreover, since it is located below the ventilation window 8a, it is located outside the passage of the air flow sucked by the electric blower 18, and does not disturb the air flow and does not increase the ventilation resistance. effective.

  Further, the dust remover drive unit substrate 29 is formed in a curved portion 29f in which a part of the front portion between the dust remover drive drum shaft support portions 29a and 29b is recessed inside the main body, and a part of the caster 6 is formed in the main body. A part of the caster accommodating space 8d accommodated in the bottom of the lower case 8 is configured. The curved portion 29 f of the dust remover drive unit substrate 29 also functions to increase the overall rigidity of the dust remover drive unit substrate 29. Then, attachment screw through holes 29 g and 29 h are provided at both ends of the dust remover drive unit substrate 29.

  A method of attaching the dust remover drive unit 26 to the main body lower case 8 will be described with reference to FIG. First, the main body lower case 8 is placed with the bottom face up so that the dust remover drive unit mounting window 8c is positioned on the upper side, and the dust remover drive unit 26 faces downward to fit into the dust remover drive unit mounting window 8c. Attach and fix to the lower case 8 with the mounting screws 32 and 33. At that time, the dust remover drive unit substrate 29 connecting the outer peripheral edge surfaces 29c, 29d of the dust remover drive drum shaft support portions 29a, 29b and the dust remover drive drum shaft support portions 29a, 29b in the dust remover drive unit substrate 29. A dust remover drive unit packing 34 is interposed between the contact surfaces of the edge surfaces 29e on both sides of the main body and the lower body case 8 for maintaining airtightness in the dust collection chamber 11. The dust remover drive unit packing 34 is interposed between the dust remover drive unit 26 and the dust remover drive unit mounting window 8c of the main body lower case 8 in a state where the dust remover drive unit packing 34 is previously attached to the dust remover drive unit substrate 29 side or the main body lower case 8 side. Realized by fitting.

  Further, the airtightness between the dust remover drive drum shaft support portion 29a and the dust remover drive drum shaft 30 is determined by the seal packing 30a squeezed into the dust remover drive drum shaft 30 being pulled by the negative pressure inside the dust collecting chamber 11 to remove dust. This is performed in contact with the child drive drum shaft support portion 29a. When the power cord 22 is pulled out (when no negative pressure is generated in the dust collecting chamber 11), the seal packing 30a has a clearance of about 0.2 mm between the seal packing 30a and the dust remover drive drum shaft support 29a. Is provided so as to be bent by the wind pressure caused by the leaked air flow when a negative pressure is generated in the dust collecting chamber 11 when the cleaner is used, and to come into contact with the dust remover drive drum shaft support portion 29a. With this configuration, it is possible to prevent the power cord 22 from being easily pulled out due to the frictional resistance between the seal packing 30a and the dust remover drive drum shaft support portion 29a when the power cord 22 is pulled out.

  The main wheels 5 are attached to the outside of the main body lower case 8 so as to be positioned on both sides of the electric blower chamber 12.

  The caster 6 is installed in a caster housing space 8d formed by curving so that the bottom of the dust collection chamber 11 in the main body lower case 8 is recessed inward of the main body. The caster 6 includes a wheel support 6b having a mounting hole 6a formed at the center thereof, and a caster wheel 6c attached to an eccentric position of the wheel support 6b. Then, the wheel support body 6b is fitted so that the caster support shaft 8e protruding from the main body lower case 8 is inserted into the mounting hole 6a of the wheel support body 6b at the center of the caster housing space 8d in the main body lower case 8. Wear and attach.

  The control device 20 receives power from the power cord 22 and controls the operation of the electric blower 18 in accordance with an instruction from an instruction (operation) switch provided on the cord grip 2c.

  When using the thus configured electric vacuum cleaner, the main body connecting pipe 2b of the hose unit 2 is fitted into the hose insertion port 14a of the hose fitting member 14 in the vacuum cleaner main body 1, and the hose grip 2c of the hose unit 2 is fitted. The extension pipe 3 is fitted to the pipe, and the suction port 44 is fitted to the tip of the extension pipe 3 so that the main body 5 and the casters 6 run on the floor surface with the vacuum cleaner main body 1 being horizontally long. In this state, the power cord 22 is pulled out and connected to a commercial power outlet.

  Since the winding drum 23 that rotates when the power cord 22 is pulled out rotates and the drum side plate 25 also rotates, the dust remover drive drum shaft gear 31 that meshes with the drum side plate gear portion 25a formed on the drum side plate 25 rotates. Then, the dust remover drive drum shaft 30 is rotated, and the dust remover drive drum 27 is rotationally driven. When the dust remover drive drum 27 rotates, the contact 28 attached to the outer peripheral surface repeatedly presses the rear surface of the dust remover 17 to swing the dust remover 17.

  At this time, as shown in FIGS. 11A to 11C, if the filter paper bag 16b of the paper bag type dust collecting filter 16 is inflated by the previous suction cleaning and the back side surface is in contact with the dust remover 17. Since the filter paper bag 16b also swings (vibrates) as the dust remover 17 swings as the dust remover drive drum 27 rotates, the dust adhering to the inner surface of the filter surface of the filter paper bag 16b shakes down. Is done.

  By the way, since the paper bag type dust collecting filter 16 in the first embodiment swells in the dust collecting chamber 11 so that the filter paper bag 16b extends vertically, the dust remover 17 swings in the filter paper bag 16b. It acts on the wall on the back side surface that is easily clogged and effectively vibrates the back side wall, so that the dust adhering to the inner surface of the back side wall can be efficiently shaken off.

  When an instruction (operation) switch provided on the hose grip 2c is pressed to perform suction cleaning, the operation switch transmits an operation signal to the control device 20, and the control device 20 that has received the operation signal receives the electric blower. Drive 18 The electric blower 18 in the operating state sucks out the air in the dust collecting chamber 11 to reduce the air pressure in the dust collecting chamber 11, and the dust-containing air in the filter paper bag 16 b in the paper bag type dust collecting filter 16 is It is sucked into the dust collecting chamber 11 while being filtered by the filter paper bag 16b. Then, new dust-containing air sucked in while dust is trapped from the suction port 4 flows into the filter paper bag 16b from the hose insertion port 14a through the extension tube 3 and the hose unit 2, and is sequentially filtered.

  When an instruction (stop) switch provided on the hose grip 2c is pressed to finish suction cleaning, the stop switch transmits a stop signal to the control device 20 and receives the stop signal. 20 stops the operation of the electric blower 18. When the power cord 22 is wound around and stored in the cord reel unit 19, the rotation of the dust remover drive drum shaft gear 31 that rotates while meshing with the drum side plate gear portion 25 a is not transmitted to the dust remover drive drum 27.

  In addition, since the power is transmitted by the combination of the single-stage spur gear of the drum side plate gear portion 25a and the dust remover driving drum shaft gear 31, the resistance due to the meshing of the gear is smaller than that of the two-stage gear transmission mechanism. Can be small.

  In order to replace the paper bag type dust collection filter 16 that has collected dust so that the inside of the filter paper bag 16b is filled with a new paper bag type dust collection filter 16, the dust collection chamber lid 10 is raised as described above. Although the dust collection chamber 11 is opened upward, the dust remover drive unit 26 in the first embodiment is located in the lower portion of the dust collection chamber 11, so that a large space for the paper bag type dust collection filter 16 is secured. can do.

  Here, the dust removal of the paper bag type dust collecting filter 16 will be described in detail with reference to FIGS.

Filtration bags 16b of bag type dust collector filter 16 in this example 1 was placed in position as to bulge portrait orientation, basically, as shown in FIG. 12, the bellows 16b ₂ are located on both lateral longitudinal extending direction, the inner side wall bulges such that the elongated form extending to sealing edge 16b ₃ is moved in the vertical direction comes into contact with the front surface of Jochiriko 17. Since the swelling of the filter paper bag 16b of the paper bag type dust collecting filter 16 is actually restricted by the inner surface of the dust collecting chamber 11, it has a distorted shape as shown in FIGS. Located aeration windows 8a of the lower case partition wall portion 8b on the rear side of Jochiriko 17, since the inlet window 16a ₁ of the mouth paper 16a to the opposing position is open, the dust-containing air inlet window of the mouth paper 16a It flows strongly toward the back side wall surface from 16a ₁ and a large amount of dust is collected on the back side wall. Relatively large dust is trapped by the inner layer located on the innermost side of the filter paper bag 16b, and most of the fine dust passes through the inner layer and is trapped by the intermediate layer and adheres to the intermediate layer. Clog.

In the state in which the back side wall surface of the filter paper bag 16b that has been collected and inflated is in contact with the front surface of the lattice frame 17a of the dust remover 17, the dust remover 17 repeatedly swings as shown in FIG. When the back wall surface of the filter paper bag 16b vibrates, the dust adhering to the back wall surface is shaken off and toward the portion (seal edge 16b ₃ ) that swells greatly below the filter paper bag 16b. Fall. Since relatively large dust is captured by the inner surface of the inner layer, it falls along the inner surface of the inner layer, and the fine dust captured by the intermediate layer is caused by the vibration of the filter paper bag 16b. It falls along the gap generated between the two. And the position where these dusts fall and accumulate is the lower position away from the center of the strong air current at the time of suction cleaning, so that the dust that has shaken up is caught in the strong air current at the next suction cleaning and soars Thus, it is possible to suppress (reduce) adhesion to the inner surface of the back side wall of the filter paper bag 16b again.

  In such dust removal, relatively small dust adhering to the back side wall surface (inner layer and intermediate layer) in the filter paper bag 16b of the paper bag type dust collecting filter 16 falls down along the surface of each layer ( In order to move the dust further downward, it is desirable to vibrate the portion located below the filter paper bag 16b greatly. In that respect, the dust remover 17 in this embodiment 1 has a lattice shape. A dust remover driving drum 27 that is swingably installed with the upper end portion of the frame body 17a as a fulcrum is located below the rear ventilation window 8a in the dust collecting chamber 11 and is located above the dust collection chamber 11. The filter paper bag 16b can be vibrated in a form that is preferable for dust removal because it acts on the lower end portion of the grid-like frame body 17a and is pressed and driven so that the lower end portion of the grid-like frame body 17a shakes greatly.

Incidentally, as shown in FIG. 14, when the paper bag type dust collecting filter 16 is installed in the dust collecting chamber 11 in such a posture that the filtering paper bag 16b swells in a horizontally long state, the collected filtering paper bag 16b is basically As shown in FIG. 15, the bellows 16b ₂ is vertically positioned and extends in the front-rear direction, and the sealing edge portion 16b ₃ expands so as to move in both lateral directions and swells into a horizontally long form. The rear side wall surface comes into contact with the front surface of the dust remover 17. Then, the dust-containing air is much dust collecting on the inner surface of the inner sidewall flowing strongly towards the rear side wall from the inlet window 16a ₁ of the mouth paper 16a, the dust causes clogging the partial adhering more to the moiety.

In the state where the back side wall surface of the filter paper bag 16b which has been collected and inflated as described above is in contact with the front surface of the lattice frame 17a of the dust remover 17, the dust remover 17 repeatedly swings as shown in FIG. When the back side wall of the filter paper bag 16b vibrates, the dust adhering to the inner surface of the back side wall is shaken down and falls toward the bellows 16b ₂ extending below the filter paper bag 16b. To do. Therefore, the position of the bellows 16b ₂ where the dust falls and accumulates is relatively close to the center of the strong air flow at the time of suction cleaning, so that the shaken dust becomes a strong air current at the time of the next suction cleaning. The effect of suppressing (reducing) the winding up and rising again and adhering to the inner surface of the back side wall of the filter paper bag 16b is reduced.

  The paper bag type dust collecting filter 16 used in Example 1 can be used with the base paper 16a made of a member other than paper and the filter paper bag 16b made of a filter material other than paper. Such a dust collection filter is also included.

BRIEF DESCRIPTION OF THE DRAWINGS It is an external view of the vacuum cleaner in Example 1 of this invention, and has shown the stowed state which contacted the back end surface to the floor and stood up. It is the vertical side view which cut | disconnected the center part of the vacuum cleaner main body in the vacuum cleaner of Example 1 of this invention. It is the cross-sectional top view cut | disconnected so that the dust removal mechanism in the cleaner body of the vacuum cleaner of Example 1 of this invention might be shown. It is the vertical side view cut | disconnected so that the dust remover drive mechanism of the dust removal mechanism in the cleaner body of the vacuum cleaner of Example 1 of this invention might be shown. It is a vertical side view of the cleaner main body which shows the attachment or detachment form of the paper bag type dust collection filter in the vacuum cleaner of Example 1 of this invention. It is a perspective view of the dust remover in the electric vacuum cleaner of Example 1 of this invention. It is a paper bag type dust collection filter in the vacuum cleaner of Example 1 of this invention, (a) is a cross-sectional top view, (b) is a front view, (c) is a vertical side view. BRIEF DESCRIPTION OF THE DRAWINGS It is a paper bag type dust collection filter in the vacuum cleaner of Example 1 of this invention, (a) is a perspective view which shows the attitude | position installed in a dust collection chamber, (b) is a perspective view which shows the state which collected and expanded. It is. It is a perspective view of the dust remover drive unit which comprises the dust remover drive mechanism in the electric vacuum cleaner of Example 1 of this invention. It is a disassembled perspective view which shows the attachment state of the dust remover drive unit to the main body lower case in the vacuum cleaner of Example 1 of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows a mode that the dust remover in the electric vacuum cleaner of Example 1 of this invention is rock | fluctuated and driven by a dust remover drive drum, (a) is a paper bag type dust collection filter which dust-collected and expanded to dust remover. FIG. 4B is a longitudinal side view showing a state in which the dust bag contacted by the paper bag type dust collecting filter is pressed by a dust remover driving drum and is swung. BRIEF DESCRIPTION OF THE DRAWINGS It is drawing which shows the paper bag type dust collection filter which collected and expanded in the electric vacuum cleaner of Example 1 of this invention, (a) is a cross-sectional top view, (b) is a front view, (c) is a vertical side view. It is. BRIEF DESCRIPTION OF THE DRAWINGS It is drawing which shows the movement state of dust when the paper bag type dust collection filter which dust-collected and expanded in the vacuum cleaner of Example 1 of this invention is removed with a dust remover, (a) is a cross-sectional top view, (b ) Is a front view, and (c) is a longitudinal side view. It is a comparative example which shows the installation state of the paper bag type dust collection filter in a vacuum cleaner, (a) is a perspective view which shows the attitude | position installed in a dust collection chamber, (b) is a perspective view which shows the state which collected and expanded. It is. It is drawing which shows the paper bag type dust collection filter which collected and expanded in the vacuum cleaner of a comparative example, (a) is a cross-sectional top view, (b) is a front view, (c) is a vertical side view. It is drawing which shows the movement state of dust when removing the paper bag type dust collection filter which collected and expanded in the vacuum cleaner of a comparative example with a dust remover, (a) is a cross-sectional top view, (b) is a front view. (C) is a vertical side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Vacuum cleaner main body, 2 ... Hose unit, 6 ... Caster, 8 ... Main body lower case, 9 ... Main body upper case, 11 ... Dust collection chamber, 12 ... Electric blower chamber, 8a ... Ventilation window, 8b ... Lower case partition wall , 8c ... dust remover drive unit mounting window, 8d ... caster housing space, 14 ... hose fitting member, 15 ... filter clamp, 16 ... paper bag type dust collecting filter, 16a ... opening paper, 16b ... filter paper bag, 16b ₂ ... bellows, 16b ₃ ... sealing edge, 17 ... dust remover, 17a ... lattice frame, 18 ... electric blower, 19 ... cord reel unit, 24, 25 ... drum side plate, 25a ... drum side plate gear part, 26 ... Dust remover drive unit, 27 ... Dust remover drive drum, 28 ... Contact, 29 ... Dust remover drive unit substrate, 34 ... Dust remover drive unit packing.

Claims (3)

A vacuum cleaner body is partitioned into a dust collection chamber and an electric blower chamber by a partition wall, and the dust collection chamber can be connected to a hose unit by a hose fitting member, and a paper bag type dust collection filter installed in the dust collection chamber is provided. It is configured to communicate with the hose fitting member, and further, a dust remover is disposed along the partition wall inside the ventilation window provided in the partition wall on the electric blower chamber side in the dust collection chamber, An electric blower provided in the blower chamber is configured to suck out air in the dust collection chamber through the ventilation window, and the dust remover is rotationally driven by a gear provided on a drum side plate in a cord reel unit provided in the electric blower chamber. An electric sweeper that oscillates by the rotation of the dust remover drive drum, vibrates and collects dust on the back side wall surface of the filter paper bag of the paper bag type dust collecting filter, and shakes the dust adhering to the back side wall surface. In the machine,
The dust remover drive drum is supported by a dust remover drive drum shaft support portion erected on the dust remover drive unit substrate, and the dust remover drive unit substrate supports the dust remover drive drum in the ventilation window in the lower case partition wall. The vacuum cleaner main body is disposed on the bottom wall of the lower case of the main body of the vacuum cleaner so as to face the lower end portion of the dust remover and be located on the dust collection chamber side of the lower side of the dust remover. A vacuum cleaner characterized by being fitted to and installed in a vacuum cleaner.   2. The electric vacuum cleaner according to claim 1, wherein the dust remover drive unit substrate is configured to abut against the lower case of the main body via a dust remover drive unit packing so as to keep the dust collection chamber airtight. 3. The dust remover drive unit substrate according to claim 1, wherein the dust remover drive unit substrate forms a curved portion that is recessed toward the inside of the main body, and constitutes a part of a caster housing space that houses a part of the caster at the bottom of the main body lower case. A vacuum cleaner characterized by

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