JPS5812697Y2 - Filter - Dust removal device - Google Patents

Description

[Detailed description of the invention] A dust removal device is often added to filters used in vacuum cleaners and the like.

As a technique of this type, it is now a common technique to provide a filter with a large number of folds, and to flick the folds or a diaphragm inserted into the device with a dust remover to remove dust adhering to the filter.

One method of this technology involves folding parallel folds into a flat filter and combining it with a dust removing body that rotates in a plane parallel to the filter.

This is because the filter is easier to mold than creating concentric folds on the filter or bending parallel folds into a cylindrical shape, and the movement of the dust removal body is circular. It has the advantage of less energy loss.

The present invention relates to an improvement of this method, and aims to improve operability or usability.

The present invention will be explained below with reference to the drawings.

FIG. 1 shows the external appearance of the vacuum cleaner main body 1. As shown in FIG.

The vacuum cleaner body 1 is divided into two parts, front and back, into a dust collection case 2 and a blower case 3. The dust collection case 2 has a carrying handle 4 on the top surface and a free front wheel 5 on the bottom surface, and the blower case 3 has a front wheel 5 on the bottom surface. It has a carrying handle 6, a pair of rear wheels 7 on both sides of the lower part, and an electric blower 8 inside.

The dust collection case 2 is constructed by engaging the lower protrusion 9 shown in FIG. , connected to the blower case 3.

Next, the internal structure of the dust collection case 2 will be explained based mainly on FIG. 2.

The dust collecting case 2 has a full-scale opening 11 at its rear surface where it joins the blower case 3, and a hose connection port 13 having a check valve 12 is formed at its front surface.

A filter device 14 is inserted through the opening 11, and also serves as a removable lid that closes the opening 11.

Reference numeral 15 denotes a substrate that is the center of assembly of the filter device, and a sealing member 16 that is in close contact with the inner surface of the dust collection case 2 and the front surface of the blower gate 3 is attached to the periphery of the substrate.

A frame section 17 that appears to form a closed loop when viewed from the front is formed on the front surface of the substrate 15, and a surface-shaped filter frame 18 is fitted on the outside of the frame section 17.

As seen in FIG. 5, engagement protrusions 19 are provided at various locations on the outer periphery of the frame portion 17, and engagement holes 20 corresponding to the engagement protrusions 19 are provided in the secondary filtration frame 18.

Since both the substrate 15 and the filtration frame 18 are molded from synthetic resin,
The two can be removably fitted using elasticity.

The relationship between the protrusions and holes may be reversed.

In addition to the lip portion 21 that comes into close contact with the inner surface of the dust collection case 2 and the lip portion 22 that comes into close contact with the front surface of the blower case 3, the seal member 16 has a lip portion 23 that penetrates into the inner surface of the filtration frame 18 and comes into close contact with it. It is shaped.

The lip portion 23 further prevents air flow from entering from the opening edge of the filter frame 18.

As will be described later, the bottom of the filter frame 18 becomes a gathering place for fine dust, so preventing air from flowing in with the lip portion 23 and preventing fine dust from flying up has an important effect on sustaining the dust removal effect.

The shape of the lip portion 23 may be as shown in FIG.

Next, windows 24 are provided at various places in the filtration frame 18, and a filter 25 made of nylon net is stretched over these windows.

Reference numeral 26 denotes a front protrusion of the filter frame 18, on which the secondary filter 25 is also stretched.

The bottom of the second filtration frame 18 serves as a dust reservoir 27 for collecting fine dust, and a fine dust outlet 28 is provided at the lower front of the second filtration frame 18, which is closed from the outside with a lid 29.

The lid 29 is pivoted at its upper end to the front surface of the filter frame 18, and is normally in the closed position due to gravity.

When dust is being sucked in, wind pressure is added and the closing force becomes even stronger.

On the other hand, the substrate 15 has a pair of upper and lower secondary filter support parts 30, 31 protrudingly provided in front of the frame part 17.

As seen in FIG. 3, the secondary filter support portions 30, 31 have a serrated shape, and a flat plate-shaped secondary filter 32 with parallel folds is stretched therebetween.

The secondary filter 32 is made of a non-woven fabric treated with resin and cured, and is attached to the support portions 30 and 31 by molding at the time of molding the substrate 15 or by using an adhesive.

The folds of the secondary filter 32 are not completely parallel, but are slightly open at the bottom, as shown in FIG.

On the rear surface of the board 15, there is a back cover 34 having ventilation holes 33 in places.
A large gear 36 in the shape of a spoke wheel as shown in FIG. 7 is pivotally supported on the outer periphery of a shaft tube 35 formed on the front surface of the back cover 34.

The large gear 36 is a screw 37 that is screwed in from the rear surface of the back cover 34.
The removal is stopped by.

Further, a bearing portion 38 is integrally formed on the upper part of the substrate 15.
A small gear 39 is integrally formed at the upper end of the shaft, and a shaft 41 for fixing a small gear 40 meshing with the large gear 36 is inserted at the lower end.

The small sheave 39 is a spur gear, and the small gear 40 and the large gear 36 are bevel gears.

The upper end of the shaft 41 projects upward from a notch 42 formed in the opening edge of the dust collection case 2.

Correspondingly, a bearing part 43 is also formed in the handle 4, in which a small pulley 44 that meshes with a small gear 40 is integrally formed at the lower end, and a shaft 46 to which a crank handle 45 is fixed at the upper end.
is inserted.

In order to prevent air from entering the dust collection case 2 through the notch 42, a shield 47 is formed on the base plate 15 to surround the bearing portion 38 and have the same outline as the notch 42. The protruding seal portion 4 is in close contact with the inner surface of the dust collection case 2.
8 is covered.

The overhanging seal portion 48 is integrally formed with the seal member 16.

Now, the large gear 36 serves as a holder for the dust removing body.

As mentioned above, the large gear 36 is shaped like a spoke wheel and has four spokes, of which two coil spring dust removers 51 are arranged on the front surfaces of the spokes 49 and 50, which are perpendicular to each other. .

One end of the coil spring dust remover 51 protrudes perpendicularly to the surface of the large gear 36 and is curved into a trapezoid to form a repellent part 52 that enters between the folds of the secondary filter 32.

The other end of the coil spring dust remover 51 is extended long and fixed to the fixed part 5.
3, and is entwined with a screw 54 screwed into the large gear 36 and tightened and fixed.

55 is a dust removal body restraining plate fixed to the front surface of the large gear 36 by the same screw 54, and the tips of two radially extending arms 56 and 57 at right angles to each other are inside the coil part 58 of the coil spring dust removal body 51. I'm getting into it.

A protrusion 60 that engages with the through hole 59 of the dust removal body restraint plate 55 is formed on the front surface of the large gear 36, and the dust removal body restraint plate 55 is connected to the screw 54.
Prevents rotation around the center.

When the large gear 36 rotates, the coil spring dust removing body 51 turns together with the dust removing body restraining plate 55 in a plane parallel to the secondary filter 32, and the repelling portion 52 draws a circular orbit.

Therefore, the ridge line 61 of the fold on the back side of the secondary filter 32
, 61 . . . , a synthetic resin protective layer 62 is provided at a location corresponding to the trajectory of the repelling portion 52.

If the method of bonding the secondary filter 32 at the same time as the injection molding of the substrate 15 is adopted, the protective layer 62 can be formed from the same material as the substrate 15 at the same time as the injection molding.

Next, the action will be explained.

When the electric blower 8 is operated by connecting the dust collection case 2 and the blower case 3 and connecting a hose (not shown), air containing dust flows into the dust collection case 2 through the hose connection port 13.

Large particles of dust are further filtered by the filter frame 18, and small particles of dust that have passed through the secondary filter 25 are filtered by the surface of the secondary filter 32.

When the secondary filter 32 becomes clogged and the dust suction power decreases, the electric blower 8 is stopped to remove dust.

When the crank handle 45 is turned by hand, the shaft 46 and small gear 4
4, small gear 39, shaft 41. Big gear 36 via small gear 40
The rotational force is transmitted to the large gear 36 and the coil spring dust remover 51
Rotate while holding.

Therefore, the coil spring dust removing body 51 rotates while repelling the folds of the secondary filter 32 with the repelling portion 52.

At this time, the coil spring dust remover 51 has the arm 56 or 57 of the dust remover restraint plate 55 inserted into the coil part 58, so when the repelling part 52 tries to get over the ridge line 61 of the fold, the large gear 36 It is impossible to bend in the opposite direction or to bend in the direction opposite to the direction of travel, and as a result, the coil portion 58 twists around the axis and ends up climbing over the folds.

By limiting the spring elasticity used for the repelling action to only the torsional elasticity, the repelling action is made strong and the secondary filter 32 is strongly shaken, thereby achieving a high dust removal effect.

Here, the pair of coil spring dust removers 51 are moved 90' in the rotation plane.
The reason for placing them at separate locations is as follows.

That is, while the secondary filter 32 has parallel folds, the movement of the coil spring dust remover 51 is a circular motion. Therefore, for the folds near the center of the secondary filter 32, the coil spring dust remover 51 moves as shown in FIG. As shown in FIG. 9, the dust remover 51 moves almost perpendicularly to the direction of the folds to perform a repelling motion, but for the folds near the left and right ends of the secondary filter 32, as shown in FIGS. It moves almost parallel to the direction of the folds, and only slides on the ridge line without making any flipping motion.

・The coil spring dust remover '51. Since the rotational resistance is naturally smaller when it simply slides on the ridge line of the folds. The resistance you receive in your hand will vary greatly depending on where you hold it.

Therefore, if there is only one coil spring dust remover 51, or if there are multiple dust removers but they simultaneously cross the folds and slide on the ridges of the folds at the same time, rotation will be uneven and the rotation operation will be uneven. To prevent this, the pair of coil spring dust removers 51 are arranged 90' apart from each other in the rotating plane, and if one dust remover is located on the left or right, the other dust remover is located above or below. As a result, when one dust removal resistance becomes large, the other dust removal resistance becomes small, so that variations in resistance depending on the rotational position are leveled out, and the dust removal torque is stabilized.

Although only one pair of coil spring dust removers 5'' is provided in the embodiment, it is of course possible to provide a plurality of pairs forming an angle of 90 degrees to each other in view of the above-mentioned purpose.

If the secondary filter 32 is unclogged as described above, cleaning can be resumed with strong dust suction power.

In this way, dust collection and dust removal are repeated many times without removing the dust collection case 2 from the blower case 3, and when a large amount of dust has accumulated inside the dust collection case 2, the dust collection case 2 is separated for the first time and the dust inside is removed. Just throw it away.

By removing the filter device 14, the coarse dust that has been filtered by the filter frame 18 can be thrown away.

By tilting the filter device 14, the fine dust in the dust reservoir 27 can be thrown away from the fine dust outlet 28.

After discarding the dust, it can be reassembled and used again.

FIG. 11 shows another embodiment.

Instead of directly repelling the folds of the secondary filter 32, a diaphragm 63 inserted into ceramics is repelled to indirectly shake the secondary filter 32, and the rest of the structure is the same as before. This is no different from the embodiment.

As described above, in the present invention, a flat filter formed by inserting a diaphragm into the parallel folds or the parallel device is rotated in a plane parallel to the filter to form the parallel □ folds or the diaphragm. (≠, an elastic dust removal body having 75 parts of a rotary carp, and a pair of said elastic dust removal bodies are installed at positions separated by 90 degrees from each other in the rotation plane, and are driven by a common motive force, It's a sea urchin.

Therefore, the variation in the magnitude of rotational resistance received by one dust removal body is canceled out by the wave 1 of rotational resistance received by the other dust removal body and the rotation resistance received by the other dust removal body. However, it is possible to obtain a dust removal device with a smooth and pleasant feel.

[Brief explanation of the drawing]

Figures to the first orm'c book applied to a vacuum cleaner; shows an example of the devised filter dust removal device; Figure 1□ is a side view of the vacuum cleaner; Figure 2 is a part of the dust collection case of the vacuum cleaner. 3 is a perspective view of the substrate of the filter device, FIGS. 4 and 4 are rear views of the same, FIG. 5 is an enlarged sectional view of essential parts of the filter device, and FIG. Figure 7 is a front view of the large gear that is the dust removal body holder, Figure 8 is a schematic cross-sectional view showing the relationship between the dust removal body and the filter, and Figure 9 is the same as Figure 8. FIG. 10 is a schematic cross-sectional view of FIG. 9 viewed from a right angle. FIG. 11 is a schematic sectional view similar to FIG. 8 showing another embodiment. 32... Secondary filter (filter), 63
...Vibration plate, 51.51...Dust removal body.

Claims (1)

[Scope of utility model registration request] A flat filter formed by inserting a diaphragm into parallel folds or the parallel device, and an elastic dust removing body having a coil part that rotates in a plane parallel to the filter and repels the parallel folds or diaphragm. A filter dust removal device characterized in that the pair of elastic dust removal bodies are mounted at positions separated by 90 degrees from each other within a rotating plane and driven by a common motive force.