JPH0785736B2 - Dust collection filter for vacuum cleaner - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collecting filter for an electric vacuum cleaner, which is composed of a bag-like body formed of a filter material such as paper having air permeability and flexibility and a mouth plate having a dust filter suction port. Related to

[0002].

2. Description of the Related Art As a dust collecting filter of this type, as shown in Japanese Examined Patent Publication (Kokoku) No. 32-883, a filter is known which is installed in a dust collecting chamber with both sides of a bag-shaped body spread to the left and right. It was

[0003]

In the conventional example described above, when the dust collecting filter is stored in the flexible packaging bag, since the bag-shaped body of the filter is flexible, the storage work is smoothly performed. It had a problem that it could not. Further, in the above-mentioned conventional example, when the opening area of the dust collecting chamber opening of the electric vacuum cleaner is small, when storing the bag-shaped body of the dust collecting filter in the dust collecting chamber, the bag-shaped body is moved back to the back of the mouth plate. It had to be folded to the side, which had the disadvantage of being inconvenient to use.

An object of the present invention is to solve the above problems and provide a dust collecting filter for a vacuum cleaner which is excellent in storability in a packaging bag and installability in a vacuum cleaner.

[0005]

The above object is to provide a bag-shaped body made of a filter material having air permeability and flexibility, and a dust suction port communicating with the suction port in the bag-shaped body, and the bag-shaped body. A rectangular mouth plate adhered to the outer wall of the body, the bag-shaped body is formed into a horizontally long tube, a bellows portion is formed along the longitudinal direction of the tube, and both open side edges of the tube are wound. In a dust collecting filter for an electric vacuum cleaner formed by adhering, both sides of the bag-shaped body are located in the rear part of the back part of the mouth plate on both sides of the bag-shaped body, and the both sides are in the mouth. This is achieved by folding the plate parallel to the edge of the mouth plate so as to be folded in the back portion of the plate.

[0006]

According to the above construction, both sides of the bag-like body extending from the mouth plate to the left and right are folded in parallel to the edge of the mouth plate and are positioned rearward in the back portion of the mouth plate. Therefore, it is possible to install the mouth plate at the opening of the dust collecting chamber of the electric vacuum cleaner and simultaneously make the bag-shaped body expandable in the dust collecting chamber.

Further, on both sides of the bag-shaped body, both of the rolled-up adhesive portions are located rearward in the back portion of the mouth plate, and both sides of the bag-shaped body are folded in the back portion of the mouth plate, so that the bag-shaped body is folded. Although the body is flexible, it is highly rigid in the folded state. Therefore, it is possible to smoothly insert the bag-shaped body into the flexible packaging bag. Make sure that the edge of the mouth plate that is parallel to the folding side of the bag is in contact with the bottom surface, side surface, or opening edge of the dust collection chamber of the vacuum cleaner, and remove the dust collection filter. Even when the bag is installed in the dust collection chamber, the folding side of the bag is parallel to the edge of the mouth plate, so the bag may bend abnormally when installed in the dust collection chamber. There is no.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. This electric vacuum cleaner includes a main body case 1 and a dust case 2. The body case 1 and the dust case 2 are detachably coupled as shown in FIG. As shown in FIG. 7, this coupling is performed by inserting the hooking portion 4 provided at the lower portion of the dust case 2 into the receiving groove 3 provided at the lower portion of the main body case 1, and the substrate of the handle 5 provided at the upper portion of the dust case 2. The rear side 6 is inserted into the handle substrate receiving concave portion 7 of the body case 1, and the engaging claw 9 of the clamp 8 provided on the upper portion of the body case 1 is engaged with the substrate 6 of the handle 5.

An electric blower 10 and a cord winding device 11 are provided inside the main body case 1. The main body case 1 is composed of a left main body case portion 1a and a right main body case portion 1b which are divided into right and left with a vertical division surface. The left and right body case portions 1a and 1b are fixed by screws (not shown). The left and right main body case portions 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, the central electric blower storage chamber 16 and the lower cord winding device storage chamber 17 are partitioned by a partition plate 18. On the upper side of the electric blower storage chamber 16, there is provided a preliminary filter storage chamber 20 for storing the spare parts of the first fine dust collecting filter (hereinafter referred to as the dust collecting filter) 19, which will be described later in detail. Spare filter storage room 20 and electric blower storage room 1
6 is partitioned by a partition plate 21. The partition plate 18,
Reference numeral 21 extends at right angles to the dividing surface of the main body case 1 and inside the left main body cases 1a and 1b. The auxiliary filter storage chamber 20 has a right body case 1b.
Regarding, the outer wall surface is opened with an opening. The spare dust collecting filter 19 is put into and taken out of the spare filter storage chamber 20 through this opening. Usually, a detachable lid 22 is attached to the opening to close the opening. The 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 the electric vacuum cleaner is used, the electric blower 10
Although the sound generated from the sound leaks to the outside of the main body case 1, the upper side inside the main body case 1 has a double partition structure with the auxiliary filter storage chamber 20, so the sound leaking to the outside can be reduced and the noise of the noise can be reduced. Reduction can be measured. Further, the preliminary filter storage chamber 20, the electric blower storage chamber 16 and the cord winding device storage chamber 17 can be formed by a molding die that is pulled out to the divided surface side of the main body case 1. If the preliminary filter storage chamber 20 were formed vertically on the outer surface wall of the main body case 1, the molding die would be complicated and the molding workability would be poor.

Next, the structure of the dust case 2 will be described. The dust case 2 is, as shown in FIGS. 6 and 7,
It has a cylindrical shape. On the front side of the dust case 2, a dust collecting filter opening 2a for inserting and removing the dust collecting filter 19 is formed. This dust collection filter opening 2
A filter support plate 36 that can be opened and closed is provided at a. The filter support plate 36 is rotatably supported by a support shaft 37 provided below the dust collection filter opening 2a, and the support plate 36 can be rotated about the support shaft 37 as a fulcrum so as to be tilted forward. Since the height of the filter support plate 36 is almost half the height of the dust collection filter opening 2a, the lower half of the dust collection filter opening 2a is closed when the filter support plate 36 is closed. A recess 38 is formed on the surface of the filter support plate 36 so that the recess 38 extends to the upper end, and stepped receiving portions 39 for receiving a part of the dust collecting filter 19 are formed on the upper and left upper ends of the recess 38. Further, a stepped receiving portion 40 for receiving a part of the dust collecting filter 19 is also formed on the upper side of the dust collecting filter opening 2a.
The functions of the receiving portions 39, 40 and the concave portion 38 will be described in detail later.

The dust case lid 43 closes the dust collecting filter opening 2a from the outside of the filter support plate 36, and is rotatably supported by a lower portion of the dust case 2 with a support shaft 44. The lid 43 with 44 as a fulcrum
Can be swung to the front. The dust case lid 43 has a hose connection port 45 into which a suction hose (not shown) is inserted and a clamp 46.

An engaging claw 47 is provided on the clamp 46, and the engaging claw 47 engages with and disengages from an engaging portion 48 provided on the dust case 2. The dust collecting filter opening 2a of the dust case 2 is closed by the dust case lid 43 by engaging the engaging claw 47 of the clamp 46 with the engaging portion 48. The body case 1 is detachably coupled 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 put into and taken out of the dust case 2 from the joint side opening.

The dust case 2 has a plurality of filter holding ribs 50 for holding the dust collecting filter 19 on the inner wall surface from the outer periphery.
Have. The filter holding rib 50 extends from the inner part of the opening on the coupling part side toward the dust collecting filter opening 2a. Further, between the filter holding ribs 50, filter withdrawing guide ribs 50a extending in the same direction as the ribs 50 are provided close to the dust collecting filter opening 2a side. This filter drawer guide rib 50a
Is inclined so as to be higher toward the dust collecting filter opening 2a side. A top plate 55 is formed on the upper inside of the dust case 2, and an insertion portion 56 into which the substrate 6 of the handle 5 is inserted is provided on the top plate 55.

Next, the dust collecting filter 19 shown in FIG. 1 will be described in detail. The bag-shaped body 56 is a filter medium 65 such as filter paper or non-woven fabric.
As shown in FIG. 4, the both ends openings 65b of a horizontally elongated cylindrical body are shown in FIG. As described above, it is folded and closed, and the parts are joined by gluing or the like to finish it into a bag shape. Filter medium 65 at this time
As shown in FIG. 2 and FIG. 3, the direction of stacking and folding of a is the suction port 6 provided in the horizontally long tubular bag-like body 65.
The front side having 5c is joined to the back side. This back side means that the dust is in the suction port 65c.
When the surface is inspected from the side, it means that the direction is such that it does not catch on the end face of the filter medium 65a or the overlapping portion.

The mouth plate 66 is made of hard paper such as cardboard. The mouth plate 66 and the bag-shaped body 65 are adhered by an adhesive. The mouth plate 66 has a dust suction port 67 corresponding to the suction port 65c of the bag-like body 65 and a closing lid portion 68. Further, the dust suction port 67 is provided at the upper part of the front surface of the bag-shaped body 65, and the suction port 67 is formed so as to be positioned at the upper part of the dust collection chamber when mounted on the main body. Further, the dust suction port 67 of the mouth plate 66 and the suction port 65c of the bag-shaped body 65 are configured such that the outer diameter of the dust suction port 67 is larger than the outer diameter of the suction port 65c. The covering lid portion 68 can be easily bent by a bending line 69 formed on one side of the mouth plate 66. Two cut lines 70 are provided at the tip of the covering lid portion 68. The engagement piece 71 formed by the two cut lines 70 is relatively easy to bend due to the cut lines 70. The mouth plate 66 can be easily formed by punching a single plate material. The folding line 69 is formed at the boundary between the mouth plate 66 and the covering lid portion 68, and the folding line 6
A notch groove 145 is formed so as to extend from both ends of 9 to the outside of the mouth plate 66.

That is, the mouth plate 66 is formed integrally with the mouth plate 66 and has a width smaller than that of the mouth plate 66.
A notch groove 145 is provided toward the suction port 67 of the mouth plate 66 from the contact point between the lower end surface 146 of FIG. Since there is this notch groove 145, the bending line 69 can be taken more inward than the outer edge of the mouth plate 66. That is,
Since the cover lid 68 can be brought closer to the dust suction port 67, the outer size of the mouth plate 66 including the cover lid 68 can be reduced. The material cost can be reduced accordingly. The cover lid 68 is bent and fitted to the mouth plate 66 to close the dust inlet 67 as shown in FIG. In order to keep the cover lid 68 in this state, the engagement piece 71 is bent slightly and is engaged with the inner edge portion of the dust suction port 67.

Before use, the dust collecting filter 19 has a bag-shaped body 65 folded in a vertically long shape so as to have a width substantially equal to that of the mouth plate 66 as shown in FIGS. That is, since both side portions of the bag-like body 65 are folded to the back side of the mouth plate 66 in a direction orthogonal to the bellows portion and the lateral width in the both side directions is smaller than the vertical width, it is very compact. . Therefore, the dust collecting filter 19 does not occupy a large space, and the dust collecting filter 19 can be easily taken in and out of the dust collecting filter storage chamber 20.

Next, the dust case 2 of the dust collecting filter 19
Installation to Open the cover lid 68 of the dust collecting filter 19 and, as shown in FIG.
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 portions of the mouth plate 66 are fitted into the receiving portions 39 and 40. It is held on the side of the dust collecting filter opening 2a. After this, the dust case lid 43
By closing the vacuum cleaner, the vacuum cleaner is ready for use.

As described above, the dust collecting filter 19 can be easily attached by fitting the mouth plate 66 into the receiving portions 39 and 40 of the dust case 2. When the paper bag-like dust collecting filter 19 is thus mounted and the lid is closed and used, the dust sucked from the suction port by the suction force generated by the electric blower flows through the airflow guide and the filter support plate suction port portion. The bag-like body 65 that has been sucked into the bag-like body 65 and folded left and right gradually expands from the one that is folded forward in the vicinity of the mouth plate 66, and then the bag-like body 65 that is folded backward is gradually formed. The entire spread is effectively spread and dust is absorbed. After the dust is collected, the front lid is opened, the mouth plate 66 is held, and the paper bag is pulled out and discarded. Next, a new dust collecting filter 19 is set and the above operation is repeated again. As described above, in the case where the volume of the dust collecting chamber is smaller than the volume of the bag-shaped body 65, the bag-shaped body 65 can be fully expanded to increase the amount of collected fine dust.

Next, the internal structure of the dust case lid 43 will be described. As shown in FIG. 6, the dust case lid 43
An inner cover plate 75 is provided inside. The inner cover plate 75 is fixed to the dust case lid body 43 by a screw 77 screwed into the screw seat 76. Inner cover plate 75
A deflection suction port 78 is provided above the center of the.
The discharge portion of the deflection suction port 78 is directed downward, and the curved portion of the guide 79 is provided with a vent hole 80. The connection port of the deflection suction port 78 is connected to the inner tip of the hose connection port 45 via a seal packing 85. A check valve 86 is integrally formed with the seal packing 85.
The check valve 86 is made of an elastic material such as rubber or soft vinyl chloride. The check valve 86 is movable around a connecting portion with the seal packing 85. The check valve 86 is located inside the deflection suction port 78, and is automatically opened by the force of the air flow passing through the hose connection port 45, and is automatically closed when there is no air flow.

The inner cover plate 75 has a cover seal packing 90 attached to the outer periphery thereof. 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, the tongue piece 91 is joined to the outer peripheral side end surface of the dust collecting filter opening 2a of the dust case 2, and the dust case 2 and the dust case lid 43 are kept airtight. . A suction inlet seal packing 92 is attached to the outer periphery of the deflecting suction inlet 78. A locking projection 93 is formed on the suction port seal packing 92, and the locking projection 93 is formed on the inner cover plate 7.
The seal packing 92 for the suction port is attached to the inner cover plate 75 by inserting it into the locking hole of No. 5. The suction port seal packing 92 is integrally formed with the lid seal packing 90 with a connecting portion 94.

The seal packing 92 for the suction port is provided in the dust collecting filter 1 when the dust case cover 43 is closed.
9 to the mouth plate 66, thereby keeping the mouth plate 66 and the inner cover plate 75 side airtight. Also, the dust case lid 43
When the valve is closed, the deflection suction port 78 is
It faces the inside of the bag-shaped body 65 through the dust suction port 67.

The above is the description of the vacuum cleaner according to the embodiment mainly from the viewpoint of the structure. Next, the operation based on this structure will be described. When the electric blower 10 is operated, the air flow containing dust passes through the suction hose, the hose connection port 45, and the deflection suction port 78, and passes through the dust collection filter 1
9 into the bag-shaped body 65. Here, the coarse dust and the fine dust are collected, the air and a small amount of fine dust pass through the ventilation holes of the bag-like body 65, and further, the coarse dust collecting filters 105 and 106.
Through the second fine dust collecting filter 107 side. Here, the fine dust is recollected, and the air passes through the ventilation holes of the second fine dust collecting filter 107 and is exhausted from the exhaust port 15 of the main body case 1.

Next, the usage of the dust collecting filter 19 will be described. The dust collecting filter 19 is in a state in which the bag-shaped body 65 is folded at the stage of being attached to the dust case 2, but when air flows into the bag-shaped body 65, the wind pressure and the outer peripheral surface of the bag-shaped body 65. The static pressure applied to the bag 65
Bulge. Since the outer periphery of the bulged bag-like body 65 is pressed by the coarse dust collecting filter 105 and the filter holding rib 50, the bulging bag-like body 65 does not bulge any further and dust is collected in this state. The bag-shaped body 65 side circumference is held by the coarse dust collecting filter 105 and the filter holding rib 50 as described above, but the air permeability of the bag-shaped body 65 is not impaired. That is, the coarse dust collecting filter 105 has sufficient air permeability, and since there is an air passage between the filter holding ribs 50, the air flow to the outer periphery of the bag-shaped body 65 is not blocked.

The dust in the bag-shaped body 65 proceeds from the portion facing the coarse-grain dust collecting filter 105. When the clogging of the facing portions progresses, most of the airflow passes through the portion facing the filter holding ribs 50, and further passes through the coarse dust collecting filters 105 provided on the side surface and the upper side of the coarse dust collecting filter frame 100. As a result, the state of flowing to the second fine dust collecting filter 107 side is taken. Thus, the bag-shaped body 65 of the dust collecting filter 19 collects dust.

When the amount of dust adhering to the bag-shaped body 65 and the second fine dust collecting filter 107 increases and the suction force decreases, the cord reel 31 of the cord winding device 11 is rotated or a manual dust removing device is used. When the handle 109 is rotated, the second fine dust collecting filter 107 is removed by the operation of the dust remover 110 as described above, and the impact punch 1
The operation of 22 also removes dust from the bag 65. As described above, dust removal of the bag-shaped body 65 is performed by the vibration of the coarse dust collecting filter 105 side due to the operation of the impact punch 122, so that the bag-shaped body 65 is not damaged. That is, since the bag-shaped body 65 is formed of a relatively weak material such as paper, if the outer surface of the bag-shaped body 65 is directly rubbed with something like the dust remover 110, the bag-shaped body 65 is broken. However, since the dust removing vibration force is applied to the bag-shaped body 65 through the coarse-grained dust collecting filter 105, an unreasonable force for breaking the bag-shaped body 65 is not applied.

As described above, the dust collecting filter 19 and the like are repeatedly used in a timely manner, and the dust is filled without leaving an extra space in the dust collecting filter 19. At this time, the dust collecting filter 19 filled with dust is removed from the dust case 2 and a new dust collecting filter 19 is attached. That is, when removing the dust collecting filter 19,
Operate the clamp 46 to open the dust case lid 43,
As described above, the dust suction port 67 is closed by the closing lid 68 of the dust collecting filter 19. Thereafter, the filter support plate 36 is opened by pulling the dust collecting filter 19 outward with the mouth plate 66, so that the dust collecting filter 19 can be easily pulled out of the dust case 2. At the time of this withdrawal, since the dust suction port 67 is closed by the blocking lid body 68, dust does not spill from the suction port 67.
The dust collecting filter 19 that has been pulled out is discarded while containing the dust. In addition, the filter withdrawal guide rib 50a
The dust collecting filter 19 can be pulled out more easily.

Removal of the dust collecting filter 19 and installation of a new dust collecting filter 19 are performed through the dust collecting filter opening 2a on the front side of the dust case 2 with the dust case lid 43 opened as described above. Therefore, it can be performed independently of the removal of the dust collecting filter unit 49, which is easy to handle.

[0030]

According to the present invention, it is possible to obtain a dust collecting filter for an electric vacuum cleaner, which has an excellent storability in a packing bag and an installability in an electric vacuum cleaner.

[Brief description of drawings]

FIG. 1 is a front perspective view of a dust collecting filter according to the present invention.

FIG. 2 is a rear perspective view of the dust collecting filter.

FIG. 3 is a plan view of the dust collecting filter.

FIG. 4 is a perspective view of a bag-shaped body of the dust collecting filter.

FIG. 5 is an enlarged view of a main part of a bag-shaped body of the dust collecting filter.

FIG. 6 is a vertical cross-sectional view of the entire electric vacuum cleaner.

FIG. 7 is an exploded perspective view of the electric vacuum cleaner in an exploded manner.

FIG. 8 is a state diagram in which the suction port of the dust collecting filter is closed.

FIG. 9 is a diagram showing suction characteristics of a dust collection filter.

[Explanation of symbols]

 19 Dust collection filter 65 Bag-shaped body 66 Mouth plate 67 Dust suction port

Claims (1)

[Claims] 1. A quadrangle provided with a bag-shaped body made of a filter material having air permeability and flexibility, and a dust suction port communicating with the suction port in the bag-shaped body, and attached to the outer wall of the bag-shaped body. An electric plate formed by forming the bag-shaped body into a horizontally long tube, forming a bellows portion along the longitudinal direction of the tube, and winding and adhering both open end edges of the tube. In a dust collecting filter for a vacuum cleaner, both sides of the bag-shaped body are positioned so that both of the rolled-in adhesive portions are located rearward in the back surface portion of the mouth plate, and the both sides are folded in the back surface portion of the mouth plate. A dust collecting filter for an electric vacuum cleaner, wherein the dust collecting filter is folded in parallel with an edge of the mouth plate.