JPS6053608B2 - Vacuum cleaner dust collection filter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention comprises a bag-like body formed of a filter material such as paper having air permeability and flexibility, and a support plate formed of cardboard or the like having a dust filter suction port. The present invention relates to a dust collection filter for a vacuum cleaner.

Conventional technology This type of dust collection filter is disclosed 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, the long paper packaging made it difficult to send.

Furthermore, in order to obtain a sufficient amount of fine dust to be collected in a small-sized paper-loaded vacuum cleaner, it is necessary to effectively spread out a paper bag that is wider than the dust collection chamber.

In order to fit a wide paper binding into a narrow dust collection room, it was necessary to fold it into small pieces and spread it out using wind pressure.However, with the conventional folding method, the sheets did not spread well and sometimes overlapped with each other, reducing the effective area. Paper packaging wider than the dust collection chamber could not be used. Problems to be Solved by the Invention Therefore, the present invention solves the above-mentioned problems by folding an elongated paper-wrapped dust collection filter so that the volume of the dust collection chamber is smaller than the volume of the paper wrapping of 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 the paper packaging to the maximum extent possible.

Means for Solving the Problems In order to achieve the above objects, the dust removal filter of the present invention has the following features:
A horizontally long cylindrical bag-like body formed of a breathable and flexible filter material such as paper to collect dust, and a cardboard etc. having a dust suction port attached to the front suction port of the bag-like body. In a vacuum cleaner dust collection filter comprising a support plate, the front inlet of the bag-like body is formed by removing the adhesive seam of a horizontally long cylinder, and the open edges of both sides of the cylinder are folded back and glued. Furthermore, since both sides of the bag-like body are bent in a direction opposite to the suction port, it is very easy to attach the dust collection filter to a vacuum cleaner.
Also, it is convenient to store spare filters without taking up much space.

Furthermore, the present invention focuses on the fact that when a wide paper wrapping is placed in a narrow dust collection volume such as in a flat vacuum cleaner, the amount of dust absorbed is greater when the filter is folded into a bellows shape, and the same effect is further improved. In order to make it come out with a simple folding method, we found a way to fold it so that when it expands due to wind pressure, it does not expand all at once, but gradually expands while causing the layers of the filter to separate from each other, thereby achieving dust absorption characteristics equivalent to bellows folding. be.

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 connection is accomplished by inserting 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, as shown in FIG. This is done by inserting the rear side of the board 6 into the handle board receiving recess 7 of the main body case 1, and engaging the engaging claw 9 of the clamp 8 provided on the upper part of the main body case 1 with the board 6 of the handle 5. The main case 1 has an electric blower 1 inside.
0 and co. A cord winding device 11 is provided. 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 and 1b are fixed with screws (not shown). The left and right main body case parts 1a and 1b have a front wall 1
A communication port 13 is provided at 2 and an exhaust port 15 is provided at the rear wall.

Furthermore, a central electric blower storage chamber 16 and a lower cord winding device storage chamber 17 are separated by a partition plate 18. A surplus filter storage chamber 20 is provided above the electric blower storage chamber 16 to store surplus 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 function 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 extra filter storage chamber 20 is located in the right main body case section 1.
Regarding b, an opening is provided on the outer wall surface.

The spare first fine dust collection filter 19 is taken in and out of the spare filter storage chamber 20 through this opening. Usually, 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, and the lid 22 is removably locked in the opening by the claw. When using this vacuum cleaner, from the electric blower 10.
The generated sound leaks to the outside of the main body case 1, but since the inside upper side of the main body case 1 has a double partition structure with an extra filter storage chamber 20, the sound leaking to the outside can be reduced and the noise can be reduced. The reduction can be measured.

In addition, spare filter storage room 20, electric blower storage room 16
The cord winding device storage chamber 17 can be formed by a mold for punching on the split surface side of the main body case 1. If the extra 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.

As shown in FIGS. 6 and 7, the dust case 2 is
It has a cylindrical shape. On the front side of the dust case 2, there is a first
A first fine dust collecting filter opening is formed through which the 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 collection 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.
The support plate 36 can be rotated forward using the support plate 7 as a fulcrum. 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.

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

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

- The dust case lid body 43 closes the opening for the first fine dust collection filter from the outside of the filter support plate 36, and is rotatably supported at the lower part of the dust case 2 with a support shaft 44, The lid body 43 can be rotated forward using this support shaft 44 as a fulcrum.

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, and this engaging claw 47 engages with an engaging portion 48 provided on the dust case 2.
to disassociate from.

The opening for the first fine dust collection filter of the dust case 2 is
By engaging the engaging claw 47 of the clamp 46 with the engaging portion 48, the dust i-sleeve cover 43 is closed. The rear side of the dust case 2 sweats the main body case 1 in a detachable manner. A joint side opening is provided on the rear side of the dust case 2, and a dust collection 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. The filter holding rib 50 extends from the inner part of the opening on the joint side toward the opening for the first fine dust collecting filter. Further, between the filter holding ribs 50, filter drawer guide ribs 5' 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 5' is inclined so as to become 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, details of the first fine dust collection filter 19 shown in FIG. 1 will be described.

The bag-like body 65 is made by bending a filter medium 65a such as filter paper or non-woven fabric into a cylindrical shape as shown in FIG. 4, and forming the upper and lower edges inwardly.
The ends of the oblong cylinder are joined by gluing or the like, the openings 65b at both ends are folded and closed as shown in FIG. 5, and the parts are joined by gluing or the like to form a bag shape. At this time, the overlapping and folding direction of the filter media 65a is such that, as shown in FIG. 2 and FIG. It is something that is joined. 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. 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 oblong bag-like body 65, and the dust suction port 67 is formed so as to be located at the top of the dust collection chamber when it is attached to the main body. . In addition, the dust suction port 67 of the support plate 66 and the suction port 65 of the bag-shaped body 65
c means that the outer diameter of the dust suction port 67 is larger than the outer diameter of the suction port 65c. 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. The locking piece 71 formed by both the cut lines 70 is relatively easy to bend due to the cut lines 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 lid part 68,
Cut grooves 145 are formed that extend to the outside of the support plate 66 from both ends of the 7-fold line 69. That is, it is formed integrally with the support plate, has a width smaller than that of the support plate, and extends toward the suction port 67 of the support plate 66 from the point of contact with the distal end surface 147 that contacts the lower end surface 146 of the support plate. A cut groove 145 was provided.

Because of this cut groove 145, the bending line 69 can be placed inward from the outer edge of the support plate 66. That is, 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 6-8 can be reduced. This can reduce material costs. By bending the cover portion 68 and aligning it with the support plate 66, the dust suction port 67 is opened as shown in FIG.
Close.

In order to maintain the cover 68 in this state, the locking piece 71 is slightly bent and engaged with the inner edge of the dust suction port 61 .
The first fine dust collecting filter 19 has a bag-like body 65 before use.
As shown in FIGS. 1 and 2, it is folded to have the same width as the support plate 66, so it is very compact.

Therefore, the storage of the first fine dust collecting filter 19 does not require a large space, 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.

Open the cover 68 of the first fine dust filter 19,
As shown in FIG. 7, the cover 68 is inserted into the recess 38 of the filter support plate 36, the bag-like body 65 is inserted into the dust case 2, and the upper and lower parts of the support plate 66 are inserted into the receiving part 3.
9 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.

After that, by closing the dust case lid 43,
This vacuum cleaner is ready for use.

In this way, the first fine dust filter 19 can be easily attached by fitting the support plates 66 into the receiving parts 39 and 40 of the dust case 2. When the paper-wrapped 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 is passed through the airflow guide and the filter support plate suction port. Paper! Dust is absorbed by the bag filter, and the left and right sides of the filter are folded one on top of the other, and the filter that is folded forward, near the support plate, gradually expands while causing delamination, and then the filter that is folded backwards gradually expands while causing delamination. The entire area is effectively spread and dust is absorbed. After suction is complete, open the front cover, pull out the paper packaging by holding the support plate, and throw it away. Next, a new paper packaging is set and the above operation is repeated. As described above, in cases where the volume of the dust collection chamber is smaller than the volume of the paper packaging, there is an effect of expanding the paper packaging 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 bolted to the inner end of the hose connection port 45 via a seal backing 85.

A check valve 86 is integrally formed with the seal backing 85 . This check valve 86 is made of an elastic material such as rubber or soft vinyl chloride. Backflow prevention valve 86
is movable centering around the connecting portion with the seal backing 85. The anti-reflux valve 86 is located inside the deflection suction port 78;
It 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.

The inner cover plate 75 has a lid seal backing 9 on its outer periphery.
0 is attached.

An annular tongue piece 9 is provided on the inner surface of the lid seal backing 90.
1 is formed. When the dust case lid 43 is closed, this tongue piece 91 joins to the outer circumferential end surface of the first fine dust collection filter opening of the dust case 2, and maintains airtightness between the dust case 2 and the dust case lid 43. keep. A suction port seal backing 92 is attached to the outer periphery of the deflection suction port 78.

This suction port seal backing 92 has a locking protrusion 93.
is formed, and by inserting this locking protrusion 93 into the locking hole of the inner cover plate 75, the suction port seal backing 92 is attached to the inner cover plate 75. Further, the suction port seal backing 92 is integrally formed with the lid substitute seal backing 90 with a connecting portion 94.
The suction port seal backing 92 is attached to the dust case lid 4
3 when closed, it comes into contact with the support plate 66 of the first fine dust collecting filter 19, thereby maintaining airtightness between the support plate 66 and the inner cover plate 75 side.

In addition, 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 .

Operation The above description has been made mainly from the viewpoint of the configuration of the present 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 J 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 fine dust pass through the ventilation hole of the bag-like body 65, further pass through the coarse dust collecting filters 105 and 106, and pass through the second fine dust collecting filter 107 side. flows to Here, the fine dust is re-collected, and the air passes through the ventilation hole of the second fine dust collecting 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. 1st fine dust collection filter 1
9 is a bag-like body 65 when attached to the dust case-2.
is in a folded state, but when air flows into the bag-like body 65, the bag-like body 65 inflates due to the wind pressure and the static pressure applied to the outer peripheral surface of the bag-like body 65. Since the outer periphery of the swollen bag-like body 65 is held down by the coarse dust collecting filter 105 and the filter holding rib 50, it does not swell any further and dust collection is performed in this state. Bag-like body 65
Although the outer periphery is held down by the coarse dust collecting filter 105 and the filter holding ribs 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. Dust collection within the bag-like body 65 proceeds from the portion facing the coarse dust collection filter 105.

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, the bag-like body 65 of the first fine dust collecting filter 19 collects dust.

If the amount of dust adhering to the bag-like body 65 and the second fine dust collection filter 107 increases and the suction force decreases, rotate the cord reel 31 of the cord winding device 11 or turn the manual handle 109 for the dust remover. When rotated, the second fine dust collection filter 1 is activated by the dust remover 110 as described above.
07 is removed, and the bag-shaped body 65 is also removed by the operation of the striking rod 122.

As described above, dust removal from the bag-like body 65 is carried out by vibration of the coarse dust collecting filter 105 side 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, a dust remover 110 or the like is used to remove the bag-like body 6.
If you rub the outer surface of 5 directly, it will break.

However, the bag-shaped body 65
Since the dust-removing vibration force is applied to the bag-like body 65, it is not necessary to force it to break the bag-like body 65. In this way, the first fine dust collecting filter 19 and the like are used while repeatedly removing dust in a timely manner.
9 is filled with dust without leaving any extra space.

At this time, the first fine dust collection filter 1 is filled with dust.
9 from the dust case 2, and install a new first fine dust collection filter 19.

That is, to remove the first fine dust collection filter 19, open the Gusto case lid 43 by operating the clamp 46,
As described above, the dust suction port 67 is closed by the lid 68 of the first fine dust collecting filter 19.

After that, with the support plate 66, the first fine dust collecting filter 19
By pulling outward, the filter supporting plate 36 is opened, and the first fine dust collecting filter 19 can be easily pulled out of the dust case 2 as shown in FIG. 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 pulled out first fine dust collection filter 19 is thrown away with the dust still stored therein. In addition, the filter drawer guide rib 5'
As a result, the first fine dust collecting filter 19 can be pulled out more easily. To remove the first dust collection filter 19 and install a new first dust collection filter 19, as explained above, open the dust case lid 43 yen and open the opening for the first fine dust collection filter on the front side of the dust case 2. Since this is done more easily, it can be done regardless of the removal of the dust collecting filter unit 49, which is good in terms of ease of handling.

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

(b) Cardboard, etc. that has an oblong cylindrical bag-like body made of a filter material such as paper that is breathable and flexible and that collects dust, and a dust suction port that is attached to the front suction port of the bag-like body. In the dust collection filter for a vacuum cleaner, the front inlet of the bag-like body is formed by removing the oblong cylindrical seam, so that air flows into the bag-like body. When dust collection is performed, dust-containing air will not leak from the front suction port attached to the suction port of the support plate and the dust collection effect will not be reduced.

(b) Also, since the open side edges of the horizontally long cylindrical body were folded back and glued together, and the both sides of the bag-like body were bent in the opposite direction to the inlet, air flow leaked from the bag-like body and dust was generated. In addition to preventing the inside of the case from getting dirty with dust and making it convenient to store spare filters without taking up much space, the present invention also makes it possible to store spare filters conveniently without taking up much space. Focusing on the fact that folding it to the back allows for more dust absorption, in order to achieve the dust absorption effect with an easier folding method, the filters on both sides do not expand all at once when they are expanded due to wind pressure, but cause delamination between the filters on both sides. However, since it is folded in such a way that it gradually expands, it has the effect of obtaining excellent dust absorption properties.

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[Brief explanation of the drawing]

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. 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. , FIG. 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, 69...Bending line,
70... Cut line, 71... Closure lid part, 145... Cut groove.

Claims (1)

[Claims] 1. An oblong cylindrical bag-like body made of a breathable and flexible filter medium such as paper to collect dust, and a cardboard etc. having a dust suction port attached to the front suction port of the bag-like body. In the dust collection filter for a vacuum cleaner, the front suction port of the bag-like body is formed by removing the adhesive seam of a horizontally long cylinder, and folding back the open side edges of the cylinder. A dust collection filter for a vacuum cleaner, characterized in that the bag-shaped body is glued together, and both sides of the bag-like body are bent in a direction opposite to the suction port.