JPS6351013B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vacuum cleaner, and more particularly to an improvement in a dust removal device for a vacuum cleaner.

Conventionally, the wave-shaped main filter installed inside the main body case of a vacuum cleaner is made of synthetic fiber, etc., and the troughs and peaks of the main filter are repelled using the driving force of a cord reel. I was removing dust. However, conventional dust removal devices that perform such repelling dust removal have the disadvantage that vibrations are difficult to transmit to the entire main filter, and as a result, dust cannot be removed completely and dust accumulates in the folds of the main filter. Furthermore, if the repelling force was increased in an attempt to overcome this drawback, the main filter would be damaged, so it was not possible to simply increase the repelling force.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a vacuum cleaner equipped with a dust removal device that eliminates the above-mentioned conventional drawbacks and effectively removes dust without damaging the main filter.

Hereinafter, the vacuum cleaner of the present invention will be described in more detail with reference to preferred embodiments shown in the accompanying drawings.

FIG. 1 shows a vacuum cleaner according to an embodiment of the present invention. Main case 1 of this vacuum cleaner
is composed of a dust collection case 2 and a rear case 3 divided into left and right parts. The suction port 4 is formed at the front of the dust collection case 2, the exhaust port 5 is formed at the rear of the rear case 3, and an electric blower 6 is housed within the rear case 3.

A main filter device 7 and a pre-filter device 8 are detachably attached to the dust collection case 2.
An airtight packing 10 is attached to the outer periphery of the frame 9 of the former main filter device 7. This frame body 9 has a frame edge shape that partitions a rectangular opening, and at approximately the center in the width direction is a sliding wall portion 11 that vertically slides and guides a slidable dust removal body 20, which will be described later.
is formed vertically across the opening, a drive shaft receiving hole 12 is formed approximately in the center of the sliding wall 11, and guide grooves 13 are formed in the vertical direction of the drive shaft receiving hole 12. (Figure 4).

The main filter 14 has a wave-shaped cross section, and is attached to the frame 9 on the left and right sides of the sliding wall 11 so as to close the opening thereof, as shown in FIG. At positions adjacent to the main filter 14 on both sides of the frame 9, two upper and lower engagement protrusions 15 are integrally formed with the frame 9. This protruding piece 15 is used to press-fit an intermediate member 18, which will be described later, into the frame 9 in a detachable manner. The intake side of the main filter 14 becomes the dust adhering surface, and when it is attached to the frame 9, its mountain portion, that is, the top 1 when viewed from the intake side.
6 is located inside the dust collection case 2, and the valley portion 17 is located on the rear case 3 side. An intermediate member 18 is detachably attached to the frame body 9 using a projection piece 15 so as to cover the intake surface side of the main filter 14.
As shown in FIGS. 2 and 5, the cover is U-shaped with an opening at the top and bottom, and this opening serves as an entrance and exit for dust.

Two guide elongated holes 19, 19 are formed in the upper and lower sides of both side walls of the intermediate member 18, respectively. As shown in FIG. 6, the slidable dust removal body 20 is formed into a square ring shape, and has upper and lower horizontal frame portions 21.
The guide groove 1 of the frame body 9 is located in the center of each of a and 21b.
Projections 22a and 22b that are inserted into and fit into 3 and 13
are formed, and positioning protrusions 23a and 23b are formed on both end faces thereof, respectively, to be inserted into and penetrate the guide slots 19 and 19 in the side wall of the intermediate member 18. Furthermore, the horizontal frame portions 21a, 21b
The surface of the horizontal frame between the protrusion 22a and each protrusion 23a and between the protrusion 22b and each protrusion 23b has a thick base and a tip that removes dust from the dust-attached surface of the main filter 14 by sliding the dust remover. A large number of dust removers 24 are formed in the shape of thin comb blades.

On the other hand, the racks 25 for sliding the dust removing body 20 along the peak and valley lines of the main filter 14 inside the intermediate member 18 are formed on the outer surface of the intermediate member 18 by means of L which are aligned in the vertical direction. shaped support piece 26
supported so as to be movable only in its longitudinal direction by
The engagement teeth mesh with a transmission gear 34, which will be described later. A protruding rod 29a is attached to the lower part of the rack 25 and extends inward through a long hole formed on the surface of the intermediate member 18. It is inserted into a hole formed and locked.

A spring member 27 made of a tension spring for returning the dust removal body 20 to its initial position has an upper end connected to a protrusion 28 formed on the upper inner surface of the intermediate member 18, and a lower end provided on the upper part of the rack 25. The dust remover 21 is connected to the protruding rod 29b, and applies an upward moving force, that is, a return force, to the dust removing body 21 via the rack 25. Of course, the other end of the spring member 27 may be attached directly to the dust removal body 20.

Furthermore, the rotary drive body 30 includes a drive shaft that is inserted into the drive shaft hole 12 in the dust removal wall 11 of the frame body 9 and is rotatably held, and a rear end of the drive shaft, that is, the exhaust of the main filter 14. It is comprised of a rotating dust remover 31 (FIG. 1) attached to the side end to repel the trough 17 of the main filter 14, and a drive plate 32 attached to the tip, that is, the intake side end. A transmission gear 34 is formed on a part of the outer periphery of the drive plate 32, and meshes with the rack 25 mentioned above when the transmission gear 34 rotates. A manual handle 33 for rotating this drive shaft is formed on the rotary dust removing body 31.

Furthermore, a connecting piece 35 for rotating the pre-dust remover 38 in the pre-filter device 8 is formed on the front surface of the drive plate 32 . Prefilter device 8
is detachably attached to cover the main filter device 7, as shown in FIG.
A circular net 36 is attached to a frame 37 on the front side of the prefilter device 8. The pre-dust remover 38 is rotatably supported at the center of the net 36, and rotates and slides on the intake surface of the net 36 to remove dust like a wiper. As described above, this pre-dust remover 38 is rotated by the rotation of the drive plate 32 being transmitted, but for this reason, the central rear end of the pre-dust remover 38 is attached to and detachable from the connection piece 35 of the drive plate 32 of the rotary drive body 30. A coupling tool 39 is provided for freely coupling.

The operation of the vacuum cleaner, particularly the dust removal device, constructed as described above will now be described.

Among the dust sucked into the dust collection case 2 from the suction port 4 by the airflow sucked by the electric blower 6, mainly large particles such as cotton waste are collected by the pre-filter device 8, and small particles are collected by the main filter. It is attached to the filter device 7.

Next, when the manual handle 33 is turned to remove dust from each net and filter of each filter device 7, 8, the rotary dust removing body 31 moves to the main filter 1.
The back side of the trough 17 of No. 4 is struck to remove dust. At this time, driving force such as a cord reel or a dedicated motor (not shown) may be used as is conventionally used. When the rotary dust removing body 31 rotates, the rotary drive body 30 connected thereto also rotates, causing the drive plate 32 to rotate. As a result, the transmission gear 34 formed on a part of the outer periphery of the drive plate 32 engages with the rack 25 and pulls the rack 25 downward against the spring member 27.

As a result, the dust remover 20 connected to the rack 25 is also removed from the guide groove 13 of the sliding wall 11 and the guide elongated holes 19, 19 formed in the side wall of the intermediate member 18.
You will be guided down. As a result, the dust removing body 21
The upper and lower comb-like dust removers 24 descend while scraping the surface of the main filter 14 to cause the attached dust to fall onto the inner wall of the dust collection case 2. At this time, if the dust remover 24 is lowered by increasing the moving distance so as to create a further gap from the lower end of the main filter 14, the dust will fall off more easily and the dust removal effect will surely be improved.
This can be easily accomplished by increasing the number of teeth on the rack 25, lengthening the guide slot for its movement, and increasing the number of teeth on the transmission gear of the drive plate 32.

When the transmission gear 34 and the rack 25 are disengaged from each other, the dust removing body 20 that has descended is suddenly raised by the spring member 27, and the protrusions 22a, 2
2b collides with the upper wall portions of the guide grooves 13, 13 of the sliding wall portion 11. This collision force causes the main filter 14 and the net of the pre-filter device 8 to vibrate, thereby assisting the dust removal action.

On the other hand, the rotation of the rotary drive body 30 rotates a pre-dust remover 38 attached to the pre-filter device 8 via a connecting piece 35 formed on the drive plate 32, thereby removing dust from the intake surface of the net 36. At this time, since the pre-dust remover 38 rotates while sliding against the net surface, the dust, mainly cotton dust, that has gotten into the eyes of the net 36 falls onto the main filter 14 side while pushing the eyes of the net 36 wider. . When the electric blower 6 is operated again, these cotton wastes are light and accumulate in the valleys of the main filter 14. However, as described above, the cotton dust and fine dust are compressed and fall from the main filter 14 due to the operation of the dust remover 20.

As mentioned above, according to the vacuum cleaner of the present invention, the comb-shaped dust remover removes dust that accumulates in the folds on the dust-attaching surface of the main filter, and also removes fine particles that have entered the eyes of the main filter. The main filter is completely removed without damaging the main filter due to the impact force generated when the dust remover is returned to its original position by the spring member, and since each of these components is mounted on the cover, which is an intermediate member, it is easy to disassemble it during maintenance and inspection, for example. It can be easily removed from the main filter even in case of emergency.

In addition, since the intermediate member described above is formed to cover the intake side of the main filter, for example, dust that has passed through the pre-filter does not directly collide with the main filter in a straight line, and acts as a cushion. The amount of fine dust passing through the main filter is also reduced, resulting in a clean exhaust effect.

[Brief explanation of the drawing]

FIG. 1 is a side view of a vacuum cleaner according to an embodiment of the present invention, with half of the suction side cut away, and FIG.
FIG. 3 is a perspective view showing the main filter device installed in the vacuum cleaner shown in FIG. 3; FIG. 3 is a perspective view similar to FIG. 2 showing the main filter device in FIG. 5 is a partial perspective view of the main filter device showing a part of the main filter and rotational drive body attached to the frame, FIG. 5 is a perspective view of an intermediate member in the main filter device, and FIG. 6 is the main filter device. FIG. 2 is a perspective view showing each component constituting the assembled state. 1...Main case, 6...Electric blower, 7...
Main filter device, 8... Pre-filter device, 12... Drive shaft bearing hole, 14... Main filter, 18... Intermediate member, 19... Guide slot,
20... Dust removing body, 24... Dust removing element, 25... Rack, 27... Spring member, 30... Rotating drive body, 3
2... Drive plate, 34... Transmission gear, 36... Net, 38... Pre-dust remover. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] 1 A comb-blade-shaped dust remover that is equipped with a wave-shaped main filter and an electric blower in the main body case and is arranged to be movable back and forth to remove dust from the intake surface of the main filter, and a moving force is applied to the dust remover in one direction. A vacuum cleaner characterized in that an intermediate member is detachably provided on the suction side of the main filter, each of which includes a rotary drive member for applying the dust remover and a spring member for returning the dust remover to its initial position.