JPH0256089B2 - - Google Patents

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention relates to a support plate made of a bag-like body made of a filter material such as paper having air permeability and flexibility and a cardboard etc. having a dust filter suction port. The present invention relates to a dust collection filter for a vacuum cleaner, which is composed of the following.

[Conventional technology and its problems]

Conventionally, this type of dust collection filter was published in Japanese Patent Application Laid-open No. 48-104365.
As described in the publication, the support plate having the dust suction port is double-layered, which is inconvenient when attached to a vacuum cleaner, and materials are wasted.

Furthermore, since the paper bag is long, it takes time to insert the bag.

Furthermore, in order to collect a sufficient amount of fine dust in a small paper bag type vacuum cleaner, it is necessary to effectively spread out a paper bag that is wider than the dust collection chamber. However, in order to put a wide paper bag into a narrow dust collection chamber, it was necessary to fold it into a small size and spread it out using wind pressure.However, with the conventional folding method, the bag did not spread well and sometimes overlapped with each other, reducing the effective area for dust collection. I couldn't use a paper bag that was wider than my room.

Therefore, the present invention solves the above-mentioned problems by folding an elongated paper bag-shaped dust collection filter to fill the paper bag to its full capacity even in devices where the volume of the dust collection chamber is smaller than the volume of the paper bag such as a flat vacuum cleaner. To provide a dust collection filter for a vacuum cleaner, which aims to increase the amount of fine dust collected by expanding it.

[Means for solving problems and their effects]

In order to achieve the above object, the dust collection filter of the present invention is formed of a filter material such as paper that has air permeability and flexibility into a horizontally long cylinder shape, and a bellows part is formed in a part of the cylinder along the longitudinal direction. A support plate made of cardboard or the like and having a dust suction port is attached to the suction port of the bag-like body, and the suction port of the bag-like body is pasted into a horizontally elongated cylindrical shape. The tube is formed with the eyes removed, and both open edges of the tube are rolled up and glued to the rear inside, and both sides of the bag-like body are folded to the back side of the support plate in a direction perpendicular to the bellows. , at least one side of the support plate is provided so as to protrude outward from the folded bag-like body.

Explain the action. In order to prevent the paper bag from tearing due to wind pressure by placing a wide paper bag in a narrow dust collection chamber and to increase the amount of dust absorbed, the bag-like body in the present invention has an oblong cylindrical shape and has a bellows section along its longitudinal direction. In order to make the bag more compact, both sides of the bag-like body are folded toward the back side of the support plate in a direction perpendicular to the bellows part. Therefore, although the dust collection filter of the present invention is folded to be thin and compact as a whole, when it is used, it is necessary to easily and reliably expand the bag-like body in the folded state as described above to its full capacity inside the dust collection chamber. There is. In the present invention, since at least one side of the support plate protrudes outward from the bag-like body in the folded state,
By using the protruding part, it is possible to set the dust collection filter in the opening of the dust collection chamber, and by doing so, the folded bag-like body is not forcibly deformed. This makes it possible to maintain the body in its natural free state. As a result, the bag-shaped body that has been folded as described above can be easily and reliably expanded upon the start of use.

Furthermore, the present invention focuses on the fact that when a wide paper bag is placed in a narrow dust collection container such as in a flat vacuum cleaner, the amount of dust absorbed is greater when the filter is folded into a bellows shape and further folded. In order to make the filter come out in an easier way, we found a way to fold it so that when it expands due to wind pressure, it does not expand all at once, but instead gradually expands while causing interlayer separation between the filters, thereby achieving dust absorption characteristics equivalent to that of bellows folding. It is something.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

This electric vacuum cleaner is composed of a main body case 1 and a dust case 2.

The main body case 1 and the dust case 2 are detachably connected as shown in FIG. This combination is
As shown in FIG. 7, insert the hook 4 provided at the bottom of the dust case 2 into the receiving groove 3 provided at the bottom of the main body case 1, and then insert the hook 4 provided at the bottom of the dust case 2 into the receiving groove 3 provided at the bottom of the main body case 1. Insert the side into the handle board receiving recess 7 of the main body case 1, and
This is done by engaging the engaging claw 9 of the clamp 8 provided on the top of the handle 5 with the base plate 6 of the handle 5.

The main body case 1 is provided with an electric blower 10 and a cord winding device 11 inside.

The main body case 1 is composed of a left main case part 1a and a right main case part 1b, which are divided into left and right parts with a vertical dividing plane. The left and right main body case parts 1a, 1b are fixed with screws (not shown).

The left and right main body case parts 1a and 1b are provided with a communication port 13 in the front wall 12 and an exhaust port 15 in the rear wall.
Further, a central electric blower storage chamber 16 and a lower cord winding device storage chamber 17 are separated by a partition plate 18. A spare filter storage chamber 20 is provided above the electric blower storage chamber 16 to store spare parts of the first fine dust collection filter 19, which will be described in detail later. The spare filter storage chamber 20 and the electric blower storage chamber 16 are separated by a partition plate 21.

The partition plates 18 and 21 extend perpendicularly to the dividing plane of the main case 1 and inward of the left main cases 1a and 1b, respectively.

The spare filter storage chamber 20 has an opening in the outer wall surface of the right main body case portion 1b. From this opening, the spare first fine dust collection filter 19 is inserted into the spare filter storage chamber 20.
It is moved in and out. Normally, a removable lid 22 is attached to the opening to close the opening.
This lid 22 has a handle hole 23 and a locking claw,
The lid 22 is removably locked to the opening by the claw.

When using this vacuum cleaner, the sound generated from the electric blower 10 leaks to the outside of the main case 1, but the inside upper part of the main case 1 has a spare filter storage chamber 2.
Since it has a double partition structure with 0, it is possible to reduce the sound leaking to the outside, and it is possible to reduce noise. Also, a spare filter storage chamber 20, an electric blower storage chamber 16, and a cord winding device storage chamber 17.
can be formed using a mold that is punched out on the dividing surface side of the main body case 1. If the spare filter storage chamber 20 were to be formed vertically on the outer wall of the main body case 1, the mold for molding would be complicated and the workability of molding would be poor.

Next, the configuration of the dust case 2 will be explained.
The dust case 2 has a cylindrical shape, as shown in FIGS. 6 and 7.

A first fine dust collecting filter opening is formed on the front side of the dust case 2, through which the first fine dust collecting filter 19 is inserted and taken out. A filter support plate 36 that can be opened and closed is provided in the opening for the first fine dust collecting filter. This filter support plate 36 is rotatably supported by a support shaft 37 provided at the lower part of the opening for the first fine dust collecting filter, and the support plate 36 is rotated so as to tilt forward using this support shaft 37 as a fulcrum. can.

Since the length of the filter support plate 36 is approximately half the height of the opening for the first fine dust collection filter,
When the filter support plate 36 is closed, the lower half of the opening for the first fine dust collection filter is closed.

A recess 38 extending to the upper end is formed on the surface of the filter support plate 36, and stepped receiving parts 39 for receiving a portion of the first fine dust collecting filter 19 are formed at the left and right upper ends of the recess 38.

Further, above the opening for the first fine dust collecting filter, a step-shaped receiving part 40 for receiving a part of the first fine dust collecting filter 19 is formed.

The functions of these receiving parts 39, 40 and recessed part 38 will be explained in detail later.

The dust case lid 43 closes the opening for the first fine dust collection filter from the outside of the filter support plate 36.
The lid body 43 is rotatably supported with a support shaft 44 as a fulcrum, and the lid body 43 can be rotated so as to be tilted forward.

This dust case lid body 43 has a hose connection port 45 into which a suction hose (not shown) is inserted, and a clamp 46.

The clamp 46 is provided with an engaging claw 47 that engages with and disengages from an engaging portion 48 provided on the dust case 2 . The opening for the first fine dust collection filter of the dust case 2 is connected to the clamp 4.
By engaging the engaging claw 47 of No. 6 with the engaging portion 48, the dust case lid body 43 is closed.

The main body case 1 is detachably connected to the rear side of the dust case 2. A joint side opening is provided on the rear side of the dust case 2, and a dust collecting filter unit 49, which will be described in detail later, is inserted into and taken out of the dust case 2 through this joint side opening.

The dust case 2 has a plurality of filter holding ribs 50 on its inner wall surface that hold the first fine dust collecting filter 19 from the outer periphery. This filter holding rib 5
0 extends from the inner part of the joint side opening toward the first fine dust collection filter opening.

Further, between the filter holding ribs 50, filter drawer guide ribs 50' extending in the same direction as the ribs 50 are provided closer to the opening for the first fine dust collecting filter. This filter drawer guide rib 50' is inclined to be higher toward the opening for the first fine dust collecting filter.

A top plate 55 is formed on the inside upper part of the dust case 2, and an insertion portion 56 into which the board 6 of the handle 5 is inserted is provided above the top plate 55.

Next, the first fine dust collection filter 19 shown in FIG.
will be explained in detail. The bag-like body 65 is made by bending a filter medium 65a such as filter paper or non-woven fabric into a cylinder shape, folding the upper and lower edges inward to form a bellows part, and gluing the ends of the oblong cylinder, etc., as shown in FIG. The openings 65b at both ends of the jointed parts are folded and closed as shown in FIG. 5, and the parts are joined by gluing or the like.
It is made into a bag shape. Filter medium 65 at this time
As shown in FIGS. 2 and 3, the overlapping and folding direction of a is such that it is joined to the back side of the oblong cylindrical bag 65 with the front side having the inlet 65c. It is. The back side means that if dust enters the surface from the suction port 65c side, it will not get caught on the end face or overlapping portion of the filter medium 65a.

The support plate 66 is made of hard paper such as cardboard. The support plate 66 and the bag-shaped body 65 are bonded together with an adhesive.

In the present invention, as shown in FIGS. 1 and 2,
The upper end side 150 of the support plate 66 projects upward (outward) from the corresponding upper side 151 of the folded bag-like body. Due to the protrusion of the upper end side 150, even if the upper end side 150 is fitted into the receiving part 40 (FIG. 7) of the dust collection chamber opening as described later, the corresponding bag-like body 65
The upper side 151 of is not deformed at all. This allows the folded bag-like body to be easily and reliably expanded within the dust collection chamber. If the upper end side 150 does not protrude in this way, the bag-like body will protrude outward from the support plate 66, so that part of the bag-like body installed in the narrow dust collection chamber will be pressed down. The folded bag-like body becomes difficult to unfold due to this forced deformation.

The support plate 66 has a dust suction port 67 corresponding to the suction port 65c of the bag-like body 65 and a cover portion 68. Further, the dust suction port 67 is located at the upper part of the front surface of the bag-like body 65, and the dust suction port 67 is formed so as to be located at the upper part of the dust collection chamber when the bag-like body 65 is attached to the main body. Further, the dust suction port 67 of the support plate 66 and the suction port 65c of the bag-like body 65 are connected to the suction port 67.
The outer diameter of the dust suction port 67 is configured to be larger than the outer diameter of the dust suction port 5c. The cover portion 68 can be easily bent along a bending line 69 formed on one side of the support plate 66. Two cut lines 70 are provided at the tip of the cover lid part 68. Engagement piece 71 formed by both cut lines 70
is relatively easy to bend due to the score line 70. This support plate 66 is easily formed by punching out a single plate. The bending line 69 is formed at the boundary between the support plate 66 and the cover portion 68, and cut grooves 145 are formed that extend to the outside of the support plate 66 from both ends of the bending line 69.

That is, it is formed integrally with the support plate, and
The cut groove 1 is formed to have a width smaller than that of the support plate, and extends toward the suction port 67 of the support plate 66 from the contact point with the side end surface 147 that contacts the lower end surface 146 of the support plate.
45 was established. Because there is this cut groove 145,
The bending line 69 can be placed inward from the outer edge of the support plate 66 . In other words, since the cover 68 can be brought closer to the dust suction port 67, the outer dimensions of the support plate 66 including the cover 68 can be reduced. This can reduce material costs.

The cover lid part 68 is folded and attached to the support plate 66.
As shown in FIG. 8, the dust suction port 67 is closed. In this state, cover the lid 68.
In order to maintain this, the engaging piece 71 is slightly bent and engaged with the inner edge of the dust suction port 67.

Before use of the first fine dust collecting filter 19, the bag-like body 65 is folded into a vertically elongated shape so as to have approximately the same width as the support plate 66, as shown in FIGS. 1 and 2.

That is, since both sides of the bag-like body are folded in a direction orthogonal to the bellows part and on the back side of the support plate in such a manner that the width in both sides is smaller than the vertical width, it is very compact. For this reason, the first
The fine dust collecting filter 19 does not require a large space to be stored, and the filter 19 can be easily taken in and out of the first fine dust collecting filter storage chamber 20.

Next, the attachment of the first fine dust collection filter 19 to the dust case 2 will be described.

Closure lid part 68 of first fine dust collection filter 19
As shown in FIG. 7, insert the cover 68 into the recess 38 of the filter support plate 36, insert the bag 65 into the dust case 2, and insert the upper and lower parts of the support plate 66 into the receiving parts. 39 and 40, the first fine dust collecting filter 19 is held on the first fine dust collecting filter opening side of the dust case 2.

Thereafter, by closing the dust case lid 43, the vacuum cleaner is ready for use.

In this way, the first fine dust collecting filter 19 can be easily attached by fitting the support plate 66 into the receiving parts 39, 40 of the dust case 2.

In this way, when the paper bag-shaped dust collection filter 19 is attached and the lid is closed, the dust sucked in from the suction port by the suction force generated by the electric blower passes through the airflow guide and the filter support plate suction port. Dust is absorbed by the paper bag filter, and the left and right sides of the filter are folded one on top of the other, and the filter gradually spreads with delamination occurring from the front folded side closest to the support plate, and then the filter that is folded backwards gradually causes delamination. The entire area is effectively spread and dust is collected. After dust collection is completed, the front cover is opened, the paper bag is pulled out by holding the support plate and discarded. A new paper bag is then set and the above operation is repeated again.

As described above, in cases where the volume of the dust collection chamber is smaller than the volume of the paper bag, there is an effect of expanding the paper bag to its full extent and increasing the amount of fine dust collected.

Next, the inner structure of the dust case lid 43 will be described. As shown in FIG. 6, an inner cover plate 75 is provided inside the dust case lid 43. As shown in FIG. This inner cover plate 75 is fixed to the dust case lid 43 by screws 77 that are screwed into screw seats 76.

A deflection suction port 78 is provided above the center of the inner cover plate 75. The discharge portion of this deflection suction port 78 is directed downward, and a ventilation hole 80 is provided in the curved portion of the guide 79.

A connection port portion of the deflection suction port 78 is connected to the inner end of the hose connection port 45 via a seal packing 85. A check valve 86 is integrally formed in the seal packing 85 . This check valve 8
6 is made of an elastic material such as rubber or soft vinyl chloride. The non-return valve 86 is movable around the connecting portion with the seal packing 85.

The non-return valve 86 is located inside the deflection suction port 78 and is automatically opened by the force of the airflow passing through the hose connection port 45, and is automatically closed when there is no airflow.

A lid seal packing 90 is attached to the outer periphery of the inner cover plate 75. An annular tongue piece 91 is formed on the inner surface of the lid seal packing 90. When the dust case lid 43 is opened, this tongue piece 91 joins to the outer peripheral side end surface of the first fine dust collection filter opening of the dust case 2, and the tongue piece 91 is airtight between the dust case 2 and the dust case lid 43. It is maintained.

A suction port seal packing 92 is attached to the outer periphery of the deflection suction port 78. A locking projection 93 is formed on this suction port seal packing 92, and this locking projection 93 is connected to the inner cover plate 7.
By inserting the suction port seal packing 92 into the locking hole 5, the suction port seal packing 92 is attached to the inner cover plate 75. Further, the suction port seal packing 92 is integrally formed with the lid substitute seal packing 90 with a connecting portion 94.

The suction port seal packing 92 comes into contact with the support plate 66 of the first fine dust collection filter 19 when the dust case lid 43 is closed, thereby sealing the connection between the support plate 66 and the inner cover plate 75 side. Keep it airtight.

When the dust case lid 43 is closed, the deflection suction port 78 faces into the bag-like body 65 through the dust suction port 67 of the support plate 66.

The above description has been made mainly from the viewpoint of the configuration of this vacuum cleaner shown in one embodiment. Next, the operation based on this configuration will be explained.

When the electric blower 10 is operated, the airflow containing dust passes through the suction hose, the hose connection port 45 and the deflection suction port 78, and flows into the bag-like body 65 of the first fine dust collection filter 19. Here, coarse dust and fine dust are collected, and air and a small amount of fine dust pass through the ventilation hole of the bag-like body 65 and are further passed through the coarse dust collection filter 1.
Pass through 05, 106 and pass through the second fine dust collection filter 1
Flows to the 07 side. Here, the fine dust is re-collected, and the air passes through the ventilation hole of the second fine dust collection filter 107 and is exhausted from the exhaust port 15 of the main body case 1.

Next, we will explain how the dust collection filter is used.

When the first fine dust collection filter 19 is attached to the dust case 2, the bag-like body 65 is in a folded state, but when air flows into the bag-like body 65, the wind pressure and the bag-like body 65 The bag-like body 65 inflates due to the static pressure applied to the outer circumferential surface of the bag. Since the outer periphery of the swollen bag-like body 65 is held down by the coarse dust collection filter 105 and the filter holding rib 50, it does not swell any further and dust collection is performed in this state.

Although the side circumference of the bag-like body 65 is pressed by the coarse dust collecting filter 105 and the filter holding rib 50 as described above, the air permeability of the bag-like body 65 is not impaired. That is, since the coarse dust collecting filter 105 has sufficient air permeability and there is a ventilation path between each of the filter holding ribs 50, the airflow to the outer periphery of the bag-shaped body 65 is not blocked.

The dust inside the bag-shaped body 65 is collected using a coarse dust collection filter 1.
Proceed from the part opposite 05. As the opposing portions become clogged, most of the airflow passes through the portions opposing the filter holding ribs 50 and further passes through the coarse dust filter 105 provided on the side and upper sides of the coarse dust filter frame 100. Then, the dust flows to the second fine dust collection filter 107 side.

In this way, dust is collected from the bag-like body 65 of the first fine dust collecting filter 19.

Bag-like body 65 and second fine dust collection filter 10
If the amount of dust adhering to 7 increases and the suction force decreases, rotate the cord reel 31 of the cord winding device 11 or remove the dust remover manual handle 10.
9, as described above, the operation of the dust remover 110 removes dust from the second fine dust collection filter 107, and the operation of the striking rod 122 also removes dust from the bag-shaped body 65.

As described above, dust removal from the bag-like body 65 is carried out by the vibration of the coarse dust collecting filter 105 by the operation of the striking rod 122, so that the bag-like body 65 is not damaged.

That is, since the bag-like body 65 is made of a relatively weak material such as paper, if the outer surface of the bag-like body 65 is directly rubbed with something like the dust remover 110, it will break. However, since the dust removing vibration force is applied to the bag-like body 65 through the coarse dust collection filter 105, an unreasonable force that would tear the bag-like body 65 is not applied.

In this way, the first fine dust collection filter 19 etc. will be used while repeatedly removing dust in a timely manner.
The first fine dust collection filter 19 is filled with dust without leaving any extra space.

At this time, the first fine dust collecting filter 19 filled with dust is removed from the dust case 2, and a new first fine dust collecting filter 19 is installed.

That is, to remove the first fine dust collection filter 19, operate the clamp 46 to open the dust case lid 43, and close the dust suction port 67 with the cover lid 68 of the first fine dust collection filter 19 as described above. to be accomplished. After that, by pulling the first fine dust collecting filter 19 outward with the support plate 66, the filter supporting plate 36 is opened, so that the first fine dust collecting filter 19 can be easily pulled out to the outside of the dust case 2. .

When the drawer is pulled out, the dust suction port 67 is closed by the cover 68, so that dust does not spill out from the suction port 67. The first fine dust collection filter 19 that has been pulled out can be thrown away while still containing dust. Further, the first fine dust collecting filter 19 can be pulled out more easily by the filter drawer guide rib 50'.

To remove the first fine dust collection filter 19 and install a new first fine dust collection filter 19, open the dust case lid 43 and install the first fine dust collection filter located on the front side of the dust case 2 as explained above. Since it is carried out through the opening, it can be carried out regardless of the removal of the dust collecting filter unit 49, which is good in terms of ease of handling.

〔Effect of the invention〕

Since the present invention has the above configuration, the following effects can be expected.

At least one side of the support plate to which the folded bag-like body is attached protrudes outward from the folded bag-like body. It becomes possible to set the bag-like body without forcibly deforming it. Therefore, at the beginning of use, even if the bag-like body has a bellows part and is folded more compactly, it can be easily and reliably expanded to its full capacity within the dust collection chamber. Therefore, an excellent dust collection effect can be obtained.

Furthermore, since both sides of the filter are folded so that they gradually expand while causing mutual delamination, excellent dust absorption properties can be obtained.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a front perspective view of a dust collection filter, FIG. 2 is a rear perspective view of the filter, FIG. 3 is a plan view of the filter, and FIG. 4 is a front perspective view of the dust collection filter. A perspective view of the bag-like body, Figure 5 is an enlarged view of the main parts of the bag-like body, Figure 6 is a vertical sectional view of the entire vacuum cleaner, and Figure 7 is an exploded perspective view of the vacuum cleaner. , No. 8 is a diagram showing a state in which the suction port of the same filter is closed, and FIG. 9 is a diagram showing the suction characteristics of the same filter. 19...First dust collection filter, 65...Bag-shaped body, 66...Support plate, 67...Dust suction port, 68
... Lid part, 69 ... Bending line, 70 ... Cut line, 71 ... Closure lid part, 145 ... Cut groove.

Claims (1)

[Scope of Claims] 1. A bag-like body formed into an oblong tube shape using a filter material such as paper that has air permeability and flexibility, and having a bellows part provided along the longitudinal direction as a part of the tube; a support plate made of cardboard or the like having a dust suction port that is attached to the suction port of the bag-like body, the suction port of the bag-like body being formed by removing an oblong cylindrical seam;
and both open edges of the tube are rolled up and adhered to the rear inside, and both sides of the bag-shaped body are folded toward the back side of the support plate in a direction perpendicular to the bellows, and at least one side of the support plate A dust collection filter for a vacuum cleaner, characterized in that a part of the dust collection filter is provided so as to protrude outward from the folded bag-like body. 2. The vacuum cleaner according to claim 1, wherein the one side projecting outward of the folded bag-like body is one side parallel to the bellows part of the bag-like body. Dust collection filter.