JP2002051949A - Electric vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric vacuum cleaner whose filter can be cleaned sanitarily without getting hands or clothes dirty. SOLUTION: Dust chambers 7 and 8 are arranged at an inlet path set between a suction tool 4 having an inlet duct and an electric fan 1a generating intake air. An exhaust pipe 15 with an exhaust opening 5a covered with a filter 11b communicating inside and outside is formed in the dust chamber 7. Dust is scratched and cleaned off from the filter 11b by having cleaning tools 40, 60 and 90 brought into contact and slid with the filter 11b. Such means as a spring 42, drive mechanisms 51, 64, 74, electric motors 50, 63, windmills 70, 90 and a manual operating part 99, are used for sliding the cleaning tools.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning mechanism for a filter provided in a dust collecting chamber of a vacuum cleaner.

[0002]

2. Description of the Related Art An example of the structure of a vacuum cleaner used at home will be described with reference to FIGS. Figure 1
In 5, 1 is a vacuum cleaner main body having a built-in electric blower 1 a, 2 is a suction hose communicating with and connected to the vacuum cleaner main body 1, 3 is a telescopic connecting pipe having a suction tool 4 connected to the tip, 5 is a connecting pipe The dust collecting part interposed between the suction hose 3 and the suction hose 2 is connected to the dust collecting part 5 by the suction hose 2.
It is a connecting member connected to. Suction tool 4, connection pipe 3,
The dust collector 5, the connecting member 10, the suction hose 2, and the electric blower 1a constitute a series of intake passages. When the electric blower 1a is driven, air flows in from the suction port (not shown) of the suction tool 4 in contact with the floor F as shown by an arrow f1, and the air passes through the connection pipe 3 and enters the dust collecting section 5, where the air is blown. Is separated and removed, only air is sucked into the electric blower 1a via the suction hose 2, and is discharged from the vacuum cleaner main body 1 as indicated by an arrow f2.

[0003] The connecting member 10 is provided with a handle 10a and an operation unit 10g in which operation keys, an operation status display unit and the like are arranged. The dust collecting portion 5 is formed in a substantially cylindrical shape, and performs cyclone dust collecting, and includes an intake guide 20 at an upper portion. FIG. 16 shows a planar sectional shape of the intake guide 20. This is a shape in which two large and small circles are connected by a bridge portion. The smaller circle portion is a connection portion of the connection pipe 3, and the larger circle portion is a cylindrical first dust collection chamber 7. Connect detachably. The bridge portion is an inflow port 5a, from which air that has passed through the connection pipe 3 flows tangentially to the dust collecting portion inner wall 5c.

As shown in FIG. 17, a connecting pipe 10b of a connecting member 10 is connected to the center of the larger circle of the intake guide 20. Reference numeral 20a denotes a cylindrical holding section provided on the inner surface of the intake guide 20 so as to communicate with the connecting pipe 10b, and the exhaust pipe 15 is detachably screwed to the holding section. FIG. 18 shows the structure of the exhaust pipe 15. The exhaust pipe 15 has an exhaust pipe main body 11 formed of a synthetic resin into a cylindrical shape. On the outer peripheral surface of the exhaust pipe main body 11, an exhaust port 5b through which air that has flowed into the dust collecting portion 5 together with the dust is separated after separating dust by centrifugal force is provided. As shown in FIG. 18, the exhaust port 5b is formed by attaching a filter 11b to a plurality of window-shaped openings 11a. The filter 11b is made of a mesh made of woven synthetic fibers such as nylon, and the inside and outside of the exhaust pipe main body 11 communicate with each other via the filter 11b. A screw portion 1 screwed to the holding portion 20a is provided at an upper portion of the exhaust pipe main body 11.
1c is formed. A dust receiving tray 14 is fixed to a lower portion of the exhaust pipe main body 11. The dust receiving tray 14 has a dust receiving gap between the dust receiving tray 14 and the entire outer peripheral surface of the exhaust pipe main body 11, and receives dust falling from the filter 11b.

The lower end of the first dust collecting chamber 7 is open, and a cup-shaped second dust collecting chamber 8 is detachably connected thereto. First
A partition 9 is provided between the dust collecting chamber 7 and the second dust collecting chamber 8.
The partition 9 is bonded, welded, or integrally formed with the first dust collection chamber 7. A part of the partition wall 9 falls in a slope shape, and forms an opening 9 a leading to the second dust collection chamber 8.

When air is sucked from the connecting pipe 10b, the air flows from the connecting pipe 3 into the first dust collecting chamber 7 through the inflow port 5a. The air swirls at high speed along the dust collecting portion inner wall 5c, and centrifugs the carried dust. The dust separated by centrifugation falls while turning along the dust collecting portion inner wall 5c, and most of the dust enters the second dust collecting chamber 8 through the opening 9a of the partition wall 9. The air separated from the dust is filtered by the filter 11 of the exhaust stack 15.
b and is sucked into the connecting pipe 10b. In FIG. 16, reference numeral 13 denotes a valve for opening and closing the inflow port 5a. The inflow port 5a is always closed by a spring or the like, and is opened by the intake air flow driven by the electric blower 1a. When the electric blower 1a is stopped, the electric blower 1a is closed to prevent the backflow of dust.

When the dust in the first and second dust collection chambers 7 and 8 is to be discarded, the first and second dust collection chambers 7 and 8 are removed from the air intake guide 20 while being connected, and both are put on a trash box or the like. By separating, the dust deposited on each can be discarded without being scattered around. If the filter 11b of the exhaust pipe 15 is severely clogged, the exhaust pipe 15
Can be removed from the holding portion 20a and washed with water.

FIGS. 19 to 2 show modifications of the above vacuum cleaner.
1 is shown. In this example, the intake guide 20 and the connection pipe 3
Are partly formed. As shown in FIG.
As can be seen from FIG. 0, a semicircular cross section shaped dust collection chamber fixing portion 3a that encloses the first dust collection chamber 7 and the second dust collection chamber 8 is formed along the longitudinal direction of the pipe. Below the dust collection chamber fixing portion 3a, a slide slide that supports a slide 16 that supports the bottom of the second dust collection chamber 8 so as to be slidable along the pipe longitudinal direction (the direction of arrow V in FIG. 19). A part 31 is provided.

A receiving portion 16a and a rib 16b of the second dust collecting chamber 8 are protrudingly provided on the front of the slider 16 and a concave portion 1 is provided on the back thereof.
6c is formed. Reference numeral 17 denotes a lock member disposed on the back side of the dust collection chamber fixing portion 3a.
Is provided with a convex portion 17a that engages with. The lock element 17 is rotatable around one end, and is urged by a spring 28 in a direction to engage the convex portion 17a with the concave portion 16c.

The second dust collecting chamber 8 has a first recessed portion 8a on the bottom surface in which the receiving portion 16a of the slide 16 is fitted. A groove 8c for receiving the rib 16b of the slider 16 and an upward hook-shaped projection 8d are provided on the side surface of the second dust collection chamber 8. The projection 8d is accommodated in a second depression 8b provided on the side surface of the second dust collection chamber 8, and does not project outside. A downward hook-shaped rib 31a is provided on the upper part of the slider sliding portion 31. The connection of the first dust collection chamber 7 and the second dust collection chamber 8 is mounted on the slide 16 and
a into the first depression 8a and the rib 16b into the groove 8c.
When the first and second dust collection chambers 7 and 8 are pushed up in a state where they are inserted into the first and second dust collection chambers, the slide 16 is also pushed up, and at the end of the stroke, the projection 8d is engaged with the rib 31a, and It does not separate from the dust collection chamber fixing portion 3a. At this time, the projection 17a of the lock 17 is engaged with the recess 16c of the slide 16 to lock the slide 16. The upper opening of the first dust collection chamber 7 is connected to the intake guide 2 via packings 7a and 7b.
Close contact with 0.

As a result, the first and second dust collecting chambers 7 and 8 are kept airtight with respect to the intake guide 20 to form a cyclone dust collecting section. A raised portion 8e is provided on the inner peripheral wall of the second dust collection chamber 8. This is for damping the swirling dust following the swirling airflow in the second dust collection chamber 8 and preventing the accumulated dust from flying up.

When the first and second dust collecting chambers 7 and 8 are to be removed, a lock release button (not shown) connected to the lock 17 is operated to push the lock 17 against the urging force of the spring 28. Push. Then, the convex portion 17a separates from the concave portion 16c, and when the first and second dust collecting chambers 7 and 8 are pushed down as shown in FIG. 21, the slider 16 is also lowered, and the engagement between the projecting portion 8d and the rib 31a is released. The first and second dust collection chambers 7 and 8 can be separated from the intake guide 20. Thereafter, the first and second dust collection chambers are separated from each other on the trash box, and the trash accumulated inside each is discarded.

[0013]

In the above-described vacuum cleaner, most of the dust carried by the air is separated by centrifugal force. There is something going in the direction of. Such dust is captured by the filter 11b. However, if the filter 11b is used for a long time, the filter 11b becomes clogged with the captured dust and the dust absorption efficiency is reduced. Therefore, the filter 11b must be cleaned from time to time to recover the dust absorbing power. In vacuum cleaners that do not employ a cyclone method of centrifuging dust, all of the sucked dust goes to the filter, so cleaning the filter is a more urgent task. The present invention has been made to address this problem,
An object of the present invention is to provide a vacuum cleaner capable of sanitarily cleaning a filter without soiling hands and clothes.

[0014]

In order to achieve the above object, according to the present invention, there is provided a suction device having an intake port, an electric blower for generating intake air, and an intake device provided between the suction device and the electric blower. In a vacuum cleaner having a path and a dust collection chamber disposed in the intake path, an exhaust pipe having an exhaust port formed with an exhaust port to which a filter communicating with the inside and outside is formed is provided in the dust collection chamber, and the filter is provided. And a cleaning tool that slides in contact with the filter, and slides the cleaning tool to clean the filter. By providing such a cleaning tool, the user can easily clean the filter, and it is less likely to stain the body or clothes.

Further, in the present invention, the cleaning tool is locked so as to be slidable in the axial direction of the exhaust pipe. Thereby, the exhaust pipe long in the axial direction can be reliably cleaned.

In the present invention, the cleaning tool is rotatably locked substantially coaxially with the exhaust pipe. Thus, the rotation driving source and the cleaning tool can be linked.

Further, in the present invention, the cleaning tool is urged in the axial direction of the exhaust tube by a spring and locked to the exhaust tube, and the cleaning device is cleaned against the urging of the spring by a dust collecting case forming a dust collecting chamber. The tool was slid. Accordingly, the exhaust pipe is cleaned every time the dust collection case is attached and detached for waste disposal.

In the present invention, a driving mechanism is provided, and the cleaning tool is slid by the driving mechanism. This allows
The cleaning tool slides reliably and the labor is reduced.

In the present invention, the driving mechanism is driven at a predetermined time. Thereby, forgetting to clean the filter can be prevented.

In the present invention, an electric motor different from the electric blower is provided, and a driving mechanism is driven by this electric motor to slide the cleaning tool. This makes it possible to clean the filter irrespective of the dust suction operation.

Also, in the present invention, the cleaning mechanism is slid by driving the driving mechanism with the intake air flow generated by the electric blower. Thus, it is not necessary to separately provide a power source.

Further, in the present invention, the intake air flow for driving the driving mechanism is controlled, and the driving mechanism is driven intermittently. This makes it possible to perform filter cleaning when needed without a separate power source.

Further, in the present invention, an operation section interlocked with the cleaning tool is provided outside the dust collecting chamber, and the cleaning tool is slid by operating this operation section. This makes it possible to clean the filter without particularly considering the power source.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Various embodiments of the present invention will be described below with reference to FIGS. Note that in these embodiments, the basic configuration as a vacuum cleaner is the same as the conventional example introduced in FIGS. 15 to 21, and the same reference numerals are used for components common to the conventional example, and description thereof will be omitted. Omitted.

FIGS. 1 and 2 show a first embodiment of the present invention. In this embodiment, a ring-shaped cleaning tool 40 is arranged outside the exhaust pipe 15. The cleaning tool 40 has an outer dimension slightly smaller than the inner dimension of the intake guide 20, and can move inside the intake guide 20 smoothly. A brush 41 that is in contact with the outer surface of the filter 11b is attached to the inner surface of the cleaning tool 40. The brush 41 has bristles made of a synthetic resin, and the tips of the bristles are arranged to have a curvature corresponding to the curvature of the outer surface of the exhaust tube 15 and elastically contact the filter 11b.
At the upper part of the exhaust pipe 15, an annular depression 11f in which the tip of the brush 41 is accommodated is prepared. Normally, the cleaning tool 40 is held at the height of the depression 11f, and the hair of the brush 41 is
Place in 1f to prevent curl and curl. In addition to the brush 41 made of such bristles, a raised cloth, a soft resin, a foam material, or the like may be arranged.

The cleaning tool 40 passes the screw portion 11c at the upper end of the exhaust pipe 15 and then connects the screw portion 11c to the connecting pipe 10b.
By screwing into the garbage, the garbage tray 14 is locked and attached in such a manner as to prevent the garbage receiving tray 14 from coming off. The cleaning tool 40 is slidable in the axial direction of the exhaust pipe 15,
Is biased toward the dust receiving tray 14 by a spring 42 inserted between the dust receiving tray 14 and the ceiling surface. In this embodiment, the side wall of the dust collecting case 7c forming the first dust collecting chamber 7 extends to the upper side, and the edge of the opening on the upper surface contacts the edge of the cleaning tool 40, and resists the urging force of the spring 42. The cleaning tool 40 is pushed up to the upper end of the exhaust pipe 15. This is the state shown in FIG. 1, in which the cleaning tool 40 is located above the inflow port 5a. In order to secure an air inflow path, an opening 7d overlapping with the inflow port 5a is formed in the side wall of the first dust collection chamber 7.

In the above embodiment, when the lock element 17 and the slide element 16 are disengaged to discard dust and the slide element 16 is slid downward as shown in FIG. 2, the first and second dust collection chambers 7, 8 descends accordingly, and at the same time, the cleaning tool 40 is also pushed down by the spring 42. At this time, the brush 41 slides while contacting the filter 11b,
The dust adhering to 1b is scraped off. The scraped-off dust is received by the dust receiving tray 14 or the first dust collecting chamber 7. This scraping operation is performed when the cleaning tool 40 is in the dust receiving tray 1.
The exhaust pipe 15 is surrounded by the inner wall of the first dust collection chamber 7 during that time, and dust does not scatter outside the first dust collection chamber 7. In other embodiments described hereinafter, the cleaning of the filter 11b is performed in a state where the exhaust pipe 15 is surrounded by the inner wall of the first dust collection chamber 7.

The dust that has fallen from the filter 11b into the first dust collection chamber 7 is discarded together with dust that has accumulated in the first dust collection chamber 7 from before. After dumping the trash, the first and second dust collection chambers 7, 8
Is set again, the brush 41 rubs the filter 11b upward from below in the process of pushing up the cleaning tool 40 by the first dust collection chamber 7, and scrapes off the dust. At this time, too,
Since the dust collecting case 7c of the dust collecting chamber 7 is in close contact with the cleaning tool 40, and the exhaust pipe 15 is surrounded by the inner wall of the first dust collecting chamber 7, the dust leaving the exhaust pipe 15 is subjected to the dust. It does not fly outside. Thus, the filter 11b is cleaned every time the first and second dust collecting chambers 7, 8 are detached.

FIG. 3 shows a second embodiment of the present invention. Here, the shape of the cleaning tool 40 is substantially the same as that of the first embodiment, but a mechanism for sliding the cleaning tool is different. That is, the electric motor 50 is installed on the back side of the ceiling surface of the intake guide 20, and the screw shaft 51 connected thereto is screwed to the cleaning tool 40 as a driving mechanism of the cleaning tool 40. When the electric motor 50 is driven, the screw shaft 51 rotates, and the cleaning tool 40
Slides toward the lower end or the upper end of the exhaust pipe 15. With this movement, the brush 41 cleans the filter 11b.

The operation switch of the motor 50 is connected to the connecting member 10.
On the operation unit 10g (see FIG. 15). In order to prevent danger and prevent dust from scattering outside the first dust collection chamber 7, the motor 50 cannot be driven when the first dust collection chamber 7 is separated from the dust collection chamber fixing portion 3a. .

The driving of the electric motor 50 can be performed automatically at a predetermined time, in addition to a method in which a user operates an operation switch. For example, it can be programmed to drive every predetermined time. Alternatively, the drive may be triggered by some event. For example, when the power cord of the vacuum cleaner main body 1 is connected to an outlet, the electric motor 50 can automatically start rotating. This means that the filter 11b is cleaned in advance in preparation for starting floor cleaning. Further, after the cleaning is completed and the operation switch of the electric blower 1a is turned off, the electric motor 50 may start rotating. This means that the filter 11b is cleaned at this time in preparation for the next cleaning.

Alternatively, a pressure detecting device is disposed inside and outside the exhaust pipe 15, and when the pressure difference before and after the filter 11b becomes greater than a predetermined value, it is determined that the filter 11b is clogged, and the motor 50 starts rotating. May be. With this, the cleaning tool 40 operates every time a sign of a decrease in the dust-absorbing power appears during use of the vacuum cleaner, and the dust-absorbing power is recovered, so that the dust-absorbing power can always be maintained at a certain level or more, and cleaning can be performed efficiently.

In any case, the electric blower 1a is stopped while the electric motor 50 is rotating, and the electric blower 1a is stopped.
It is desirable that the electric motor 50 cannot be driven while a is rotating. This is because if the cleaning tool 40 falls below the inlet 5a while air is flowing from the inlet 5a, dust may accumulate on the upper surface of the cleaning tool 40. In order to prevent dust from entering the upper surface of the cleaning tool 40, the upper position of the exhaust pipe 15 and the position where the tip of the brush 41 fits into the depression 11f is defined as the home position of the cleaning tool 40, and the cleaning tool 40 is always pulled up to this point. After that, the motor 50 is configured to stop rotating.

FIGS. 4 and 5 show a third embodiment of the present invention. In this embodiment, a cylindrical cleaning tool 60 as shown in FIG. 5 is used. The cleaning tool 60 has a shape in which a pair of upper and lower rings are connected by a plurality of vertical bars 61. Each of the vertical rails 61 extends in parallel with the axial direction of the exhaust pipe 15, and a brush 62 that elastically contacts the filter 11b is attached to the inner surface thereof. The cleaning tool 60 is disposed substantially coaxially with the exhaust pipe 15, and after passing through the screw section 11 c at the upper end of the exhaust pipe 15, the screw section 11 c is screwed into the connecting pipe 10 b to hold the dust receiving tray 14. And is attached to the exhaust pipe 15 so as to be rotatable and slidable.

An electric motor 63 installed on the back side of the ceiling surface of the intake guide 20 rotates the cleaning tool 60 via a driving mechanism 64. The drive mechanism 64 is a speed reduction drive mechanism and is constituted by the following: a pinion 65 fixed to the shaft of the electric motor 63, a rotatably supported shaft of the intake guide 20, and an intermediate gear 67 engaged with the pinion 65. A large gear 69 integrally formed on the shaft 66 and the upper end of the cleaning tool 60 and engaged with the other intermediate gear 68 of the intermediate shaft 66.

As in the case of the motor 50 of the previous embodiment, the motor 63 cannot be driven when the first dust collection chamber 7 is separated from the dust collection chamber fixing portion 3a. In addition to when the user turns on the operation switch, the motor 63 can be set to be automatically driven at a predetermined time, similarly to the case of the motor 50.

The drive mechanism 64 is preferably isolated from the flow of air flowing in through the inlet 5a and out of the connecting pipe 10b by a partition. This is to prevent dust from adhering to the drive mechanism 64, hindering its movement and leading to breakage.

FIG. 6 shows a fourth embodiment of the present invention. Here, the same cleaning tool 60 as in the third embodiment is used,
However, the power source was not a motor but a windmill 70 that was rotated by air flowing into the first dust collection chamber 7. The air passage continuing from the connection pipe 3 branches in the intake guide 20, and an inflow port 71 dedicated to the windmill 70 is opened above the inflow port 5a. A shaft 72 fixed to the windmill 70, a pinion 73 fixed to the shaft 72, and a large gear 69 at the upper end of the cleaning tool 60 meshing with the pinion 73 constitute a driving mechanism 74 of the cleaning tool 60. When the electric blower 1 a is driven to suck air from the connection pipe 3, part of the air flows in from the inlet 71 and hits the windmill 70. Thereby, the windmill 70 rotates, and the rotation is transmitted to the cleaning tool 60 at a reduced speed via the drive mechanism 74. That is, the filter 11b is continuously cleaned while the floor is being cleaned.

FIG. 7 shows a fifth embodiment of the present invention. This is a modification of the fourth embodiment, in which the location of the windmill 70 is changed. That is, in this embodiment, a part of the intake guide 20 is expanded outward to form the windmill chamber 5d,
The windmill 70 was arranged in this. Inlet 5a for windmill 70
The intake air flow from is blown and rotates it.

As can be said to be common to the fourth and fifth embodiments, the drive mechanism 74 is isolated from the air flowing from the inflow ports 5a and 71 by a partition wall, and the movement of the drive mechanism 74 becomes poor due to the adhesion of dust. It is better to prevent failure.

FIG. 8 shows a sixth embodiment of the present invention. This embodiment is a modification of the fifth embodiment. That is, here, the inflow port 75 for directly taking in external air is formed in the intake guide 20, and the intake flow from this is blown to the windmill 70 in the windmill room 5d. This air does not include dust sucked from the floor surface unlike the air that passes through the connection pipe 3, so that direct contact with the drive mechanism rarely causes a failure. Valve 7 at inlet 75
6 is arranged to control the intake air flow so that the drive mechanism 74 can be driven intermittently. The opening of the valve 76 is driven by an electric motor or a solenoid, and the opening and closing of the valve 76 can be controlled by a hand switch. If the valve 76 is electrically operated in this manner, it can be opened at predetermined time intervals or can be opened based on a pressure difference between the inside and outside of the exhaust pipe 15 as in the embodiment using an electric motor as a power source. .

FIG. 9 shows a seventh embodiment of the present invention. This embodiment is a modification of the sixth embodiment. That is,
The inlet 75 and the valve 76 at the inlet are taken into the intake guide 20, and an opening 77 for taking in outside air is formed in a side wall of the intake guide 20. The valve 76 rotates around a shaft 78 and is urged by a spring or the like (not shown) so as to always close the inflow port 75. Reference numeral 79 denotes a pressed portion extending from the valve 76 beyond the shaft 78, and a rod 80 penetrating the side wall of the intake guide 20 faces the pressed portion. A push button 81 is fixed to the rod 80 outside the intake guide 20, and a retaining pin 82 is fixed inside the rod 80, and is urged to the outside of the intake guide 20 by a spring 83. When the push button 81 is pressed while the electric blower 1a is rotating, the pushed portion 79 is pushed by the rod 80, the valve 76 is turned to the open position, air flows in from the inflow port 75, and the windmill 70 Rotate. That is, the cleaning tool 60 can be arbitrarily and intermittently moved. Of course, the valve 76 can be driven by an electric motor, a solenoid, or the like, as in the sixth embodiment.

FIGS. 10 and 11 show an eighth embodiment of the present invention. The cleaning tool 90 in this embodiment includes a cleaning tool 60.
Similarly to the above, a pair of upper and lower rings are connected by a plurality of vertical rails 91, and a brush 92 that elastically contacts the filter 11b is attached to the inner surface of each vertical rail 91. Exhaust stack 1
5 is fitted substantially coaxially with the exhaust tube 15 and fitted to the outside of the exhaust tube 15 in a state where the dust container 14 is not fixed to the exhaust tube 15, and then locked by fixing the dust container 14 to the exhaust tube 15, The cleaning tool 60 is similar to the cleaning tool 60 in that the cleaning tool 60 is rotatably slidable on the exhaust pipe 15. The only difference is that a windmill 93 is provided at the upper end instead of a large gear. The windmill 93 may be integrally formed with the ring portion above the cleaning tool 90, or a separately formed one may be fixed. The windmill 93 is placed at the height of the inlet 5a, and rotates by receiving air flowing from the inlet 5a. Accordingly, the entire cleaning tool 90 rotates to clean the filter 11b. Cleaning tool 90
It is preferable to make the rotation direction of the gas flow coincide with the airflow turning direction around the exhaust pipe 15. This is for rotating the cleaning tool 90 more powerfully using the force of the swirling airflow. This situation is the same in the fourth to seventh embodiments.

Reference numeral 94 denotes a braking device attached to the intake guide 20, and has a brake shoe 95 that contacts the cleaning tool 90. The brake shoe 95 is normally pressed against the cleaning tool 90 by a spring (not shown), and stops the rotation of the cleaning tool 90. Brake shoe 95 by motor, solenoid, etc.
Is lifted and separated from the cleaning tool 90, the cleaning tool 90 starts rotating due to the airflow from the inlet 5a. That is,
By controlling the braking device 94, the driving of the cleaning tool 90 can be arbitrarily selected. Further, similarly to the embodiment in which the electric motor is used as a power source for driving the cleaning tool, the braking can be released at predetermined time intervals, or the braking can be released based on a pressure difference between the inside and outside of the exhaust pipe 15.

FIGS. 12 and 13 show a ninth embodiment of the present invention. This is a modification of the eighth embodiment. The difference is that the blade of the windmill 93 of the cleaning tool 90 is protruded upward so as not to be exposed to the air from the inflow port 5a. Means that a windmill room 96 for accommodating the windmill 93 is provided. Regarding the introduction of air for rotating the windmill 93, the configurations of the fourth, sixth, and seventh embodiments, which do not rely on the air from the inlet 5a, are applied.

FIG. 14 shows a tenth embodiment of the present invention. Here, a cleaning tool 40 of the same type as that used in the first and second embodiments is used. The cleaning tool 40 is connected to a lower end of a rod 97 that penetrates an upper partition of the suction guide 20. A window 98 provided in the connecting member 10 is provided at the upper end of the rod 97.
Is fixed, and a rod 97 is constantly urged upward by a spring 100 inserted between the operating portion 99 and the upper partition of the intake guide 20. Thus, the cleaning tool 40 connected to the rod 97
Also, the height of the brush 41 is raised to a height where the tip of the brush 41 can be accommodated in the depression 11f. The operation unit 99 against the force of the spring 100
The cleaning tool 40 is moved up and down in conjunction with the operation unit 99 by repeatedly pressing and releasing the
1b can be cleaned. The spring 100 can be omitted. Alternatively, the operation direction of the force of the spring 100 is reversed, the cleaning tool 40 is urged downward, the operation unit 99 is pulled up against the urging force, and the filter 11b is cleaned by repeating the operation of separating the filter 11b. You can also. In this case, an appropriate locking means is provided so that the cleaning tool 40 can remain at the upper part of the exhaust pipe 15 or the outer dimension of the cleaning tool 40 is reduced to reduce the distance between the cleaning tool 40 and the inner wall of the intake guide 20. Large so that air flow is not obstructed.

Although the embodiments of the present invention have been described above, these are merely examples, and the present invention can be implemented with further changes without departing from the gist of the invention.

[0048]

According to the present invention, in the case where the exhaust pipe is disposed in the dust collecting chamber, the filter attached to the exhaust pipe is cleaned without removing the dust collecting chamber. Since work can be performed, fine dust does not scatter around. In addition, the cleaning work can be performed without touching the dust, and the dust does not adhere to hands and clothes, which is sanitary. Various power sources can be used to move the cleaning tool,
Benefits for the user can be enhanced. In addition, the exhaust stack only locks the cleaning tool slidably, and the attachment / detachment of the exhaust stack is not hindered by the cleaning tool.
If necessary, the exhaust stack can be washed or replaced.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a dust collecting part showing a first embodiment of a vacuum cleaner of the present invention.

FIG. 2 is a vertical cross-sectional view of the dust collecting unit also showing the first embodiment, in a state different from FIG.

FIG. 3 is a vertical sectional view of a dust collecting part showing a second embodiment of the electric vacuum cleaner of the present invention.

FIG. 4 is a vertical sectional view of a dust collecting part showing a third embodiment of the vacuum cleaner of the present invention.

FIG. 5 is a perspective view of a cleaning tool according to a third embodiment.

FIG. 6 is a vertical sectional view of a dust collecting part showing a fourth embodiment of the vacuum cleaner of the present invention.

FIG. 7 is a horizontal sectional view of a dust collecting part showing a fifth embodiment of the vacuum cleaner of the present invention.

FIG. 8 is a horizontal sectional view of a dust collecting part showing a sixth embodiment of the vacuum cleaner of the present invention.

FIG. 9 is a partial cross-sectional view of a dust collector showing a seventh embodiment of the vacuum cleaner of the present invention.

FIG. 10 is a vertical sectional view of a dust collecting part showing an eighth embodiment of the vacuum cleaner of the present invention.

FIG. 11 is a perspective view of a cleaning tool according to an eighth embodiment.

FIG. 12 is a vertical sectional view of a dust collecting part showing a ninth embodiment of the vacuum cleaner of the present invention.

FIG. 13 is a perspective view of a cleaning tool according to a ninth embodiment.

FIG. 14 is a vertical sectional view of a dust collecting part showing a tenth embodiment of the vacuum cleaner of the present invention.

FIG. 15 is a side view showing the entire configuration of a conventional vacuum cleaner.

16 is a horizontal sectional view of a dust collecting portion of the vacuum cleaner of FIG.

FIG. 17 is a vertical sectional view of a dust collecting portion of the vacuum cleaner of FIG.

18 is a side view of the exhaust stack of the vacuum cleaner in FIG.

FIG. 19 is a vertical cross-sectional view of a dust collector showing a modification of the vacuum cleaner of FIG.

20 is a horizontal cross-sectional view of the dust collecting section taken along the line XX of FIG.

FIG. 21 is a sectional view similar to FIG. 19 but in a state different from FIG. 19;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 1a Electric blower 2 Suction hose 3 Connection pipe 4 Suction tool 5 Dust collection part 5a Inflow port 5b Exhaust port 7 First dust collection room 7c Dust collection case 8 Second dust collection room 9 Partition 9a Opening 10 Connection Member 11 Exhaust cylinder body 11b Filter 13 Valve 14 Dust tray 15 Exhaust cylinder 16 Slider 17 Locker 20 Intake guide 40 Cleaning tool 42 Spring 50 Electric motor 51 Screw shaft (drive mechanism) 60 Cleaning tool 63 Electric motor 64 Drive mechanism 70 Windmill 74 Drive Mechanism 76 Valve 90 Cleaning tool 93 Windmill 99 Operation unit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A47L 9/20 531 A47L 9/20 531C 531Q 531L

Claims (10)

[Claims] 1. A suction device having an intake port, an electric blower for generating intake air, an intake passage provided between the suction device and the electric blower, and a dust collection chamber arranged in the intake passage. In the vacuum cleaner provided, an exhaust pipe having an exhaust port provided with a filter communicating with the inside and outside is provided in the dust collection chamber, a cleaning tool is provided for slidingly contacting the filter, and the cleaning tool is slid. A vacuum cleaner characterized by moving the filter to clean the filter. 2. The vacuum cleaner according to claim 1, wherein the cleaning tool is slidably engaged in an axial direction of the exhaust pipe. 3. The vacuum cleaner according to claim 1, wherein the cleaning tool is rotatably slidable substantially coaxially with the exhaust pipe. 4. The cleaning tool is urged in the axial direction of the exhaust cylinder by a spring and attached to the exhaust cylinder, and the cleaning tool is slid against the urging of the spring by a dust collecting case forming a dust collecting chamber. The vacuum cleaner according to claim 2, wherein: 5. The vacuum cleaner according to claim 1, further comprising a driving mechanism, wherein the cleaning tool is slid by the driving mechanism. 6. The vacuum cleaner according to claim 5, wherein the driving mechanism is driven at a predetermined time. 7. The electric vacuum cleaner according to claim 5, wherein an electric motor different from the electric blower is provided, and a driving mechanism is driven by the electric motor to slide the cleaning tool. 8. The electric vacuum cleaner according to claim 5, wherein a driving mechanism is driven by an intake air flow generated by the electric blower to slide the cleaning tool. 9. An intake air flow for driving a driving mechanism is controlled,
The driving mechanism is intermittently driven.
An electric vacuum cleaner according to claim 1. 10. The electric vacuum cleaner according to claim 1, wherein an operation unit interlocked with the cleaning tool is provided outside the dust collection chamber, and the cleaning tool is slid by operating the operation unit.