JPS59141920A - Electric cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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 moved 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, in an attempt to overcome this drawback, increasing the repelling force would destroy the main filter, 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 from the surface 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. A main body case 1 of this vacuum cleaner is composed of a 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 blur filter device 8 are detachably attached to the dust collection case 2, and 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 its widthwise center, there is a sliding wall portion 11 that vertically and slidingly guides a slidable dust removal body 20, which will be described later. A drive shaft receiving hole 12 is formed in the sliding wall 11 in the vertical direction, and a guide groove 13 is formed in the vertical direction of the drive shaft receiving hole 12.
13 is formed (Fig. 4).

The main filter 14 has a wave-shaped cross section, and is attached to the frame 9 so as to close the openings on the left and right sides of the sliding wall 11, as shown in FIG. This frame body 9
At positions adjacent to the main filter 14 on both sides of the frame body 9, two retaining protrusions 15 are provided at the top and bottom, respectively.
is integrally formed with. 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 main filter 14 has its suction side as a dust-resistant surface, and when it is attached to the frame 9, when viewed from the suction side, its peaks or tops 16 are on the inside of the dust collection case 2, and its valleys 17 are on the rear side. It is located on the case 3 side. The intermediate member 18, which is removably attached to the frame body 9 using the protrusion piece 15 so as to cover the intake surface side of the main filter 14, has its upper and lower sides as shown in FIGS. 2 and 5. It is a U-shaped cover with an opening, 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. Slidable dust removal body 20
As shown in FIG. 6, the upper and lower horizontal frame portions 21a are formed in a rectangular ring shape.

Projections 22a and 22b are formed in the center of 21b to fit into the guide grooves 13.degree. 13 of the frame 9, and each guide elongated hole 19. A positioning protrusion 23a that is inserted into and penetrates the
, 23b are formed, respectively. Furthermore, the dust-resisting surface of the main filter 14 is attached to the surface of the horizontal frame between the protrusion 22a and each protrusion 23a and between the protrusion 22b and each protrusion 23b in the horizontal frame parts 21a and 21b. Remove dust by motion ＼ Numerous comb-shaped dust removers 24 with thick roots and thin tips
is formed.

On the other hand, a rack 25 for sliding the dust removing body 20 inside the intermediate member 18 along the exit line trough line of the main filter 14 is provided with a rack 25 formed on the outer surface of the intermediate member 18 so as to be aligned in the vertical direction. It is supported movably only in the vertical direction by a shaped support piece 26, and its engagement teeth are connected to a transmission gear 34 to be described later.
It meshes with the. A protruding rod 29 is attached to 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 etc. and locked.

A spring member 27, which is a tension spring for returning the dust removal body 20 to its initial position, has one end connected to a protrusion 28 formed on the upper inner surface of the intermediate member 18, and the other end connected to the rack 25. Connected to the above-mentioned protruding rod 29 formed,
An upward moving force, that is, a return force is applied to the dust removing body 20 via the rack 25. Of course, the other end of the spring member 27 may be attached directly to the dust removal body 20.

Further, 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 supported, and a rear end of the armpit drive shaft, that is, the main filter 1.
The rotary dust remover 31 (Fig. 1) is attached to the exhaust side end of the main filter 14 and repels the valley 17 of the main filter 14, and the drive plate 32 is 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 when the transmission gear 34 rotates, the rack 25 described above is
meshes with 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 . As shown in FIG. 1, the pre-filter device 8 is detachably attached to cover the main filter device 7, and a circular net 36 is attached to a frame 37 on the front side of the pre-filter device 8. It is being The pre-removal box 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 above will now be described.

The suction port 4 rides on the airflow sucked by the electric blower 6.
Of the dust sucked into the dust collecting case 2, mainly large particles such as cotton waste are deposited on the pre-filter device 8, and small particles are deposited on the main 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 remover 31 hits the back side of the trough 17 of the main filter 14 to remove dust. At this time, as is conventional, a driving force such as a cord reel or a dedicated motor (not shown) may be 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 removing body 20 connected to the rack 25 is also guided by the guide groove 13 of the sliding wall portion 11 and the guide slot 19.19 formed in the side wall of the intermediate member 1B, and descends. As a result, the comb blade-shaped dust removers 24 on the upper and lower sides of the dust remover 21
descends while scraping the surface of the main filter 14, causing the build-up dust to fall onto the inner wall of the dust collection cup 2. At this time, if the dust remover 24 is lowered from the lower end of the main filter 14 by increasing the moving distance so as to create a further gap, 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 of the rack 25, lengthening the guide slot for its movement, and increasing the number of teeth of the transmission gear of the drive plate 32.

The dust removing body 20 that has completely descended is connected to the transmission gear 34 and the rack 25.
When the engagement with the sliding wall portion 11 is released, the spring member 27 causes the protrusion 22a922b to rise rapidly and the protrusion 22a922b
Collided with the earthen wall of guide @13.13. This impact 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 300 rotates the pre-dust remover 38 attached to the pre-filter device 8 via the 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 on the net surface, the dust, mainly cotton dust, that has entered the mesh of the net 36 falls onto the main filter 14 side while expanding the mesh of the net 36. When the electric blower 6 is operated again, these cotton lints 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 described above, according to the vacuum cleaner of the present invention, the comb blade-shaped dust remover prevents dust that accumulates in the folds of the dust-resistant surface of the main filter from entering the eyes of the main filter. Fine dust is completely removed by the spring member without damaging the main filter due to the impact force when the body returns, and since each of these components is installed on the cover, which is an intermediate member, it is easy to use during maintenance and inspection, for example. It can be easily removed from the main filter during disassembly.

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

[Brief explanation of drawings]

FIG. 1 is a side view showing a suction side half of a vacuum cleaner according to an embodiment of the present invention in cross section, and FIG. 2 is a perspective view showing a main filter device installed in the vacuum cleaner of FIG. 1. Third
The figure is a perspective view similar to Figure 2 showing the state in which the dust removing body is lowered in the main filter device of Figure 2, and Figure 4 is the main filter attached to the frame and a part of the rotary drive body. FIG. 5 is a partial perspective view of the filter device, FIG. 5 is a perspective view showing an intermediate member in the main filter device, and FIG. 6 is a perspective view showing each component constituting the main filter device in an assembled state. DESCRIPTION OF SYMBOLS 1... Main body case, 6... Electric blower, 7... Main filter device, 8... Pre-filter device, 1
2... Drive shaft bearing hole, 14... Main filter,
18... Intermediate member, 19... Guide slot, 20...
Dust removal body, 24... Farm remover, 25... Rack, 27.
... Spring member, 30... Rotation drive body, 32... 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. Agent Shin Kuzuno − @3 1! If

Claims (1)

[Claims] A main body case includes a wave-shaped main filter and an electric blower, a comb-blade-shaped dust remover that removes dust from the intake surface of the main filter, a rotational drive body that slides the dust remover in one direction, and a rotary drive body that slides the dust remover in one direction. A vacuum cleaner characterized in that intermediate support members each provided with a spring member for returning to an initial position are detachably provided on the intake side of the main filter.