JPH06269383A - Dust collecting filter for vacuum cleaner - Google Patents

Abstract

PURPOSE:To prevent detachment of an adherent part of a doubling part and generation of abnormal noise, by a method wherein one side end of a filter medium which is not adherent is pressed against an inner wall of a bag by means of an airstream which contains dirt and dust flowing into the bag through an inlet, whereby peeling off of the side end and generation of vibration can be prevented. CONSTITUTION:An airstream flowing into a bag 17 through an inlet 17c presses a non-adherent part 18e of one side end 18a of a filter medium 18 which is positioned on an inner wall side of the bag agianst the inner wall of the bag 17, whereby the non-adherent part 18e is not peeled up to vibrate. On the outer hand, as another side end 18d of the filter medium 18 positioned on the inner wall side of the bag 17 is pressed against another inner wall 18g of the bag 17 by an airstream P0, large-sized dust contained in the aitream P0 never clings on a further side end 18d of the filter medium 18. Thus generation of abnormal noise due to vibration of the non-adherent part 18e at a doubled part 18c of the filter medium 18 can be prevented, and at the same time, a detachment of an adherent part of the doubled part 18c can also be prevented.

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.

[0002]

2. Description of the Related Art A conventional dust collecting filter for an electric vacuum cleaner is
As shown in FIGS. 21 and 22, a sheet-shaped filter medium 500.
And a bag-like body 501 obtained by sealing the opposite side edges 500a and 500b of the same to form a cylinder, and sealing both side opening edges 500c and 500d of the cylinder, and the surface side of the bag-like body 501. And a mouth plate 502 provided with a dust suction port 502a which is attached to the outer periphery of the inflow port 500e provided in the above and communicates with the inflow port 500e.

Further, the overlapping portion 500f of the filter medium 500
The adhesive flows out from one side edge 500 g of the filter medium 500 located on the inner wall side of the bag-like body 501 to the non-overlapping portion side of the filter medium 500 during the sticking work, and the bag-like body is caused by the flowed-out adhesive. In order to prevent the inner walls of 501 from sticking to each other, the adhesive 503 is applied only to the central portion of the overlapped portion 500f of the filter medium 500, and the filter medium 500 located on the inner wall side of the bag 501 is located. Edge 500g
Therefore, the adhesive 503 applied to the overlapping portion 500f of the filter medium 500 is prevented from flowing outward. In other words, the bag-shaped body 501 is one in which the one side portion 500a of the filter medium 500 located on the inner wall side of the bag-shaped body 501 is the non-adhered portion 500h to which the overlapped filter medium 500 is not attached. there were. Moreover, in the conventional dust collecting filter for the electric vacuum cleaner, the non-adhesive portion 500h is flipped by the air flow P flowing into the bag-shaped body 501 from the inflow port 500e of the bag-shaped body 501.

[0004]

In recent years, in the field of electric vacuum cleaners, mites are sucked into the mouth by a strong suction force and the mites are eradicated or penetrated into long-hair carpets. In order to efficiently collect dust, the suction power of the electric vacuum cleaner is increased, and the amount of air and the flow velocity of air flowing from the inlet provided in the bag-shaped body of the dust collecting filter have become large.

Therefore, when the above-mentioned conventional dust collecting filter for the electric vacuum cleaner is installed in the dust collecting chamber of the electric vacuum cleaner having a large suction work rate to perform the dust collecting work, the inflow port 50 of the bag-like body 501.
As shown in FIG. 22, one side portion 500a of the filter medium 500, which is the non-adhesive portion 500h of the inner wall of the bag-shaped body 501, is strongly turned by the air flow P containing dust that flows in from 0e and vibrates strongly. , Abnormal noise is generated, and the filter medium 5
It has been found that a phenomenon occurs in which the adhered portion of the overlapping portion 500f of No. 00 peels off and the blow-through of dust becomes large. This phenomenon was strongly exhibited when dust was caught on one side 500a of the filter medium 500.

The object of the present invention is to prevent curling and vibration of one side of the filter medium which is the non-adhesive portion of the bag-shaped inner wall of the dust collecting filter even when used in an electric vacuum cleaner having a high suction work rate. Another object of the present invention is to provide a dust collecting filter for an electric vacuum cleaner capable of preventing generation of abnormal noise and peeling off of the stuck portion of the overlapping portion.

[0007]

[Means for Solving the Problems] The above-mentioned object is a bag-like body obtained by sealing the opposite side edges of a sheet-shaped filter medium by stacking and adhering them to each other and sealing both side opening edges of the tube. And a mouth plate that is attached to the outer periphery of the inflow port provided in the bag-shaped body and that has a dust suction port that communicates with the inflow port, and the overlapping portion of the filter medium is at least,
One end of the filter medium located on the inner wall side of the bag-shaped body, in a dust collecting filter for an electric vacuum cleaner, which is a non-adhesive portion, the inflow port and the overlapping portion of the filter medium, Arranged such that one side end of the filter medium, which is the non-adhesive portion, is pressed toward the inner wall of the bag-shaped body by the air flow that has flowed into the bag-shaped body from the inflow port. It is achieved by

[0008]

When a dust collecting filter is installed in the dust collecting chamber of the electric vacuum cleaner and the electric blower of the electric vacuum cleaner is rotated, the dust collecting filter contains the dust that has flowed into the bag-shaped body through the inlet. The resulting airflow causes swelling and dust to be collected in the bag-shaped body.

At this time, one side edge of the filter material, which is not adhered, is pressed toward the inner wall of the bag-shaped body by the air flow containing dust that has flowed into the bag-shaped body from the inlet, and the one side thereof is pressed. The end is pressed toward the inner wall of the bag,
By curling and vibrating the one end, peeling off of the sticking part of the overlapping portion of the filter media and generation of abnormal sound are prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

1 and 2 show an embodiment of an electric vacuum cleaner using the dust collecting filter of the present invention. The electric vacuum cleaner is detachably connected to a main body case 1 and the main body case 1. It is provided with a dust case 2. An electric blower 3 and a cord winding device 4 are provided in the main body case 1.

The body case is provided with a communication port 5 on the front wall 1a and an exhaust port 6 on the rear wall 1b. A partition plate 9 partitions the electric blower chamber 7 and the cord winding device storage chamber 8 in the main body case 1. Dust case 2
Has a tubular shape as shown in FIGS. 1 and 2.

A disposable dust collecting filter 10 (hereinafter referred to as a first dust collecting filter) is provided on the front side of the dust case 2.
Is formed with a first opening 2b for loading and unloading into and from the dust collection chamber 2a. A filter support plate 11 is provided in the first opening 2b. The filter support plate 11 is rotatably provided so that the filter support plate 11 can be tilted forward with a support shaft 12 provided below the first opening 2b as a fulcrum.

The filter support plate 11 is set to a size capable of blocking almost half of the first opening 2b.
On the surface of the filter support plate 11, a concave portion that is pulled out to the upper end
11a is formed, and stepped receiving portions 11b of the first dust collecting filter 10 for receiving a mouth plate, which will be described later, are formed at the upper left and right ends of the recess 11a.

The dust case lid 13 closes the first opening 2b from the outside of the filter support plate 11,
It is rotatably provided at the lower part of the dust case so as to fall forward with the support shaft 14 as a fulcrum. Dust case lid 1
3 is a hose connection port 1 into which a suction hose (not shown) is inserted
5 and clamp 16 for fixing to this dust case
And have.

On the rear side of the dust case 2, the main body case 1
Is detachably connected. A plurality of filter holding ribs 2c are formed on the inner wall of the dust collection chamber 2a of the dust case 2.

3 to 10 show an embodiment of the first dust collecting filter 10 of the present invention. 3 to 10
In the above, the bag-shaped body 17 of the first dust collecting filter 10 is the side portions 18a, 18 of the sheet-shaped filter medium 18 made of Japanese paper, resin-containing synthetic paper, recycled paper or non-woven fabric.
It is made by stacking and sticking together b and making a cylinder, and sealing both side opening edges 17a and 17b of this cylinder.

On the front surface side of the bag-shaped body 17, an inflow port 17c is provided substantially in the center of the front surface side. Bag 1
Reference numeral 7 is a horizontally long tubular shape, and has bellows portions 17d and 17e along the longitudinal direction of the bag-shaped body 17. The sealing of the opening edges 17a, 17b on both sides is performed by the opening edges 17a, 17b.
Is folded and bonded as shown in FIG.

On the outer periphery of the inflow port 17c of the bag-shaped body 17,
The mouth plate 19 is attached by an adhesive. Mouth plate 1
9 is a dust suction port communicating with the inflow port 17c of the bag-shaped body 17.
19a is provided. One side of the mouth plate 19 is a bag-shaped body 17.
Of the bellows portion 17a is projected outward. A mounting hole 19b is provided in this protruding portion. The mouth plate 19 is integrally provided with a covering lid 20 for covering the dust suction port 19a. The mouth plate 19 and the covering lid 20 are connected by a bending line 21. A groove 22 is provided between the left and right ends of the folding line 21 and the end of the mouth plate 19 in order to bring the folding line 21 close to the dust suction port 19a. The cover 20 has two cut lines 2
The locking piece 20b is formed by 0a. By locking the locking piece 20b to the dust suction port 19a,
The dust suction port 19a is blocked by the blocking lid 20. The mouth plate 19 and the covering lid 20 are integrally formed by cardboard such as corrugated cardboard. Both the dust suction port 19a and the inflow port 17c are circular, and the diameter of the dust suction port 19a is larger than that of the inflow port 17c.

The first dust collecting filter 10 is shown in FIGS.
As shown in FIG. 7, before use, the mouth plate 19 is folded rearward and rearward to have a vertically long shape. In the bellows portions 17d and 17e of the bag-shaped body 17, the folding depth dimension of the bellows portion closer to the mouth plate 19 is set larger than the folding depth dimensions of the remaining bellows portions.

The upper end 19c of the mouth plate 19 projects above the bellows portion 17d of the bag-shaped body 17. Lower edge 2 of the lid
0c projects below the bellows portion 17e of the bag-shaped body 17. In the overlapping portion 18c of the filter medium 18, at least one side end 18d of the filter medium 18 located on the inner wall side of the bag-shaped body 17 is used as the non-sticking portion 18e. In this embodiment,
As shown in FIG. 9, the central portion of the overlapping portion 18c of the filter medium 18 is adhered with an adhesive 23 such as glue or a heat-welding agent, and both side ends 18 of the opposite side portions 18a and 18b of the filter medium 18 are adhered.
The d and 18f parts are not attached. The dimension H in FIG. 9 indicates the width of the overlapping portion 18c, and the dimension h in FIG. 9 indicates the width of the adhesive 23, that is, the width of the sticking portion.

The overlapping portion 18c of the filter medium 18 is shown in FIG.
As shown in, it is located on the back side of the bag-shaped body 17. The inflow port 17c and the overlapping portion 18c of the filter medium 18 and the inflow port 17c and the overlapping portion 18c of the filter medium 18 are the air flow P flowing into the bag-shaped body 17 from the inflow port 17c.
By o, the one side end 18d portion of the filter medium 18 which is the non-adhesive portion 18e is in a positional relationship of being pressed toward the inner wall 18g of the bag-shaped body 17. In other words, the non-adhered portion 18e is prevented from being turned over by the air flow Po flowing into the bag-shaped body from the inflow port 17c.
The eight opposing sides 18a and 18b are overlapped with each other. Further, in other words, the non-adhered portions 18e are opposed to the side portions 18 of the filter medium 18 so that the non-adhered portions 18e are not turned over by the air flow Po flowing into the bag-shaped body 17 from the inflow port 17c.
A and 18b are made to overlap each other.

When the bag-like body 17 is folded as shown in FIGS. 3 and 4, the longitudinal dimension is set smaller than the longitudinal dimensions of the mouth plate 19 and the covering lid 20. . The folded bag-like body 17 is positioned on the back side of the mouth plate 19 so as to be orthogonal to the bellows portions 17d and 17e formed on both sides along the longitudinal direction of the bag-like body 17.

At the edge of the first opening 2b of the dust case 22, a concave receiving portion 2d for engaging with the upper end 19c of the mouth plate 19 is formed.
Is provided. The mouth plate 19 has its lower end 19d fitted and locked to the receiving portion 11b of the filter support 11, and its upper end 19b fitted and locked to the receiving portion 2d provided in the first opening 2b of the dust case 2. As a result, the dust case 2 is attached to the first opening 2b. At this time, the covering lid 20 is locked in the recess 11 a of the filter support 11.

Inside the dust case lid 13, a deflection suction port 24 communicating with the hose connection port 15 is provided. When the dust case lid 13 closes the first opening 2b of the dust case 2, the deflected suction port 24 is located in the bag-like body 17 from the inflow port 17c as shown in FIG. Then, the flow of the air flow Po flowing out from the deflecting suction port 24 causes the non-adhered portion 18e of the filter medium 18 to pass through the bag-shaped body 1.
It is arranged so that it is pressed inward toward the inner side of 8.

On the rear side of the dust case 2, there is provided a second opening 28 for detachably mounting a second dust collecting filter 27 having a net-like coarse filter 25 and a fine filter 26 folded in a waveform. It is provided. Second
The dust collecting filter 27 is provided with a dust remover 30 and a striking body 31 that operate by utilizing the rotation of the cord reel 29 of the cord reel winding device 4. Dust remover 30
Can be manually operated by turning the handle 32 by hand. The dust remover 30 is
By sliding on the back surface of the fine filter 26, fine dust adhering to the fine filter 26 is dropped into the dust collecting chamber 2a. The hitting body 31 is the coarse filter 26.
By vibrating the first dust collecting filter 10 in an inflated state, which is in contact with the coarse filter 26, the dust adhering to the first dust collecting filter 10 drops downward in the first dust collecting filter 10. It is what makes me.

In the above structure, when the electric blower 3 is rotated, the air flow Po containing dust is transferred to the hose connection port 15.
Then, it passes through the deflecting suction port 24 and flows into the bag-shaped body 17 of the first dust collecting filter 10. Coarse dust and fine dust are captured in the bag-shaped body 17. A small amount of fine dust and air can form a bag-like body 17.
And the fine filter 2 through the coarse filter 25.
It flows to the 6 side. The fine dust that cannot be captured by the bag-shaped body 17 is captured by the fine dust filter 26. The air that has passed through the fine dust filter 26 passes through the electric blower 3 and is discharged to the outside of the main body case 1 through the exhaust port 6 of the main body case 1.

Although the first dust collecting filter 10 is folded when attached to the filter support 11 of the dust case 2, the air flow containing dust from the inflow port 17c of the bag 17 into the bag 17. When Po flows in, bag 1
7 inflates, and as shown in FIG. 1, the outer wall of the bag-shaped body 17 is in contact with the coarse filter 26 and the filter holding rib. In this state, as shown in FIGS. 8 and 9, one side 1 of the filter medium 18 located on the inner wall side of the bag-shaped body 17 is caused by the air flow that has flowed into the bag-shaped body 17 from the inflow port 17c.
The non-sticking portion 18e of 8a is pressed against the inner wall of the bag-shaped body 17, and the non-sticking portion does not flip and vibrate. Further, since one side end 18d of the filter medium 18 located on the inner wall side of the bag-shaped body 17 is pressed against the inner wall 18g of the bag-shaped body 17 by the air flow Po, the air flow P
The coarse dust contained in o is not caught on the one end 18d of the filter medium 18.

Therefore, the overlapping portion 18 of the filter medium 18
It is possible to prevent the abnormal sound from being generated due to the vibration of the non-sticking portion 18e in c, and to prevent the peeling of the adhesive portion of the overlapping portion 18c due to the strong turning of the non-sticking portion 18e.

11 to 20 show another embodiment of the dust collecting filter.

The bag-like member 101 of the dust collecting filter 100 shown in FIGS. 11 to 14 is composed of two sheet-like filter materials 10.
It has a double structure in which 2,103 are partially adhered. The inner filter medium 103 of the bag-shaped body 101 is made of a material that has a higher air permeability and is thinner than the outer filter medium 102 of the bag-shaped body 101.

As shown in FIG. 14, the double-structured material 104 for forming the bag-like body 101 is either the outer filter medium 102 wound on the roller 105 or the inner filter medium 103 wound on the roller 106. It is made by bonding the outer filter medium 102 and the inner filter medium 103 with the roller 109 while partially applying the glue 108 to the one side with the gluing roller 107.

In the bag-like body 101, the side portions 102a and 102b of the opposite side portions 102 of the outer filter medium 102 are overlapped with each other, and at least the outer filter medium 102 of the overlapping portion 102c is overlapped.
The one side edge 102d portion of the outer filter medium 102, which is located on the inner wall side of the outer wall, is used as the non-adhesive portion 102e.
The one side edge 103a of the inner filter medium 103 located on the inner wall side of the inner filter medium 103 is projected outward from the one side edge 102d of the outer filter medium 102 located on the inner wall side of 02.

One side edge 103b of the inner filter medium 103, which is located on the outer wall side of the inner filter medium 103, has an outer filter medium 102.
It is located between the non-adhesive 102e parts.

In another embodiment of FIGS. 11 to 14, FIG.
And the dimensions L ₁ to L ₅ shown in FIG. 13 are L ₁ = 5 m
m, L ₂ = 10 mm, L ₃ = 5 mm, L ₄ = 2 mm, L ₅ = 13 mm
Is set to. The size L ₆ of the outer filter medium 102 is set to be 13 mm larger than the size L ₇ of the inner filter medium 103. The dimension L ₁ and the dimension L ₅ indicate the lateral width dimension of the non-adhesive portion, the dimension L ₂ indicates the lateral width dimension of the adhesive portion 102f, and the dimension L ₄ indicates the lateral edge dimension 102d of the outer filter medium 102 to the inner filter medium 103. The dimension up to the edge 103a is shown, and the dimension L
₁ indicates the outer filter medium 1 from one end 103b of the inner filter medium 103.
The dimension up to the sticking portion 102f in the overlapping portion 102c of No. 02 is shown.

On the surface of the bag-shaped body 101, an inflow port 101a is formed.
A mouth 104 is bonded to the outer peripheral edge of the. Mouth 10
4 is provided with a dust suction port 104a communicating with the inflow port 101a. The overlapping portions of the outer filter medium 102 and the inner filter medium 103, which are adjacent to each other, are located on the back surface side of the bag-shaped body 101, as shown in FIG. 11. As shown in FIG. 11, the inlet 101a, the one side edge 102d of the outer filter medium 102, and the one side edge 103b of the inner filter medium 103 are connected to each other as shown in FIG.
Air flow P ₁ containing dust that has flowed into the bag 101 from a
Are arranged on the bag-shaped body 101 so as to be pressed toward the inner wall of the bag-shaped body 101.

11 to 14, the one side edge 103b of the inner filter medium 103 is not swept by the air flow P ₁ and is not peeled off from the outer filter medium 102, and the dust collecting capability of the bag-like body 101 is improved. It does not lower. Also,
Since the one side edge 102d of the outer filter medium 102 is not turned over by the airflow P ₁ , the one side edge 10d of the outer filter medium 102 is also prevented.
It is possible to prevent the generation of abnormal sound due to the vibration of 2d and the peeling of the sticking portion 102f in the overlapping portion 102c of the outer filter medium 102.

The dust collecting filter 200 shown in FIGS. 15 and 16 is shown in FIG. 3 except for the position of the overlapping portion 202a of the filter medium 202 forming the bag-shaped body 201 and the shape and mounting position of the mouth plate 203. The structure is the same as that of the dust collecting filter 10 shown in FIG. The mouth plate 203 of FIGS. 15 and 16 is
It has a substantially rectangular shape and is attached to the center of the surface of the bag-like body 201.

The dust collecting filter 300 shown in FIGS. 17 and 18 has the same structure as the dust collecting filter shown in FIGS. 15 and 16 except the position of the overlapping portion 302a of the filter medium 302 forming the bag-shaped body 301. Is. 15 and 16
In the dust collecting filter 200, the overlapping portion 202a of the filter member 202 is covered with the filter member 202 while the bag 201 is inflated.
3 is located above the dust suction port 203a, the dust collecting filter 300 of FIGS.
With the bag-shaped body 301 inflated, the overlapping portion 302a of the filter medium 302 is located below the dust suction port 303a of the mouth plate 303.

The dust collecting filter 400 shown in FIGS. 19 and 20 has an inlet 40 located above the surface of a vertically elongated bag 401.
1a is provided and the mouth plate 4 is provided on the outer peripheral edge of the inflow port 401.
03 is adhered and the dust suction port 40 provided on the mouth plate 403.
3A to 3C, in which the overlapping portion 402a of the filter material 402 forming the bag-like body 401 is arranged at a position displaced to the left of 3a, and other structures are shown in FIGS.
It has the same structure as 0.

The dust collecting filter 2 shown in FIGS. 15 to 20.
Also in the case of 00, 300, 400, the filter media 202, 302, 4 are similar to the dust collecting filter 10 shown in FIGS. 3 to 10.
The non-adhered portions of the overlapping portions 202a, 302a, 402a of No. 02 are not flipped by the air flow, and it is possible to prevent the generation of abnormal sound and the peeling of the adhesive portions of the overlapping portions 202a, 302, 402a.

[0042]

As described above, according to the present invention, even when used in an electric vacuum cleaner having a high suction work rate, the one-sided portion of the filter material, which is the non-adhesion of the bag-shaped inner wall of the dust collecting filter, is turned up. Thus, a dust collecting filter for an electric vacuum cleaner capable of suppressing noise, vibration, generation of abnormal sound, and peeling off of the stuck portion of the overlapping portion can be obtained.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of an electric vacuum cleaner showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of essential parts of the electric vacuum cleaner showing the embodiment of the present invention.

FIG. 3 is a front perspective view of a dust collecting filter according to an embodiment of the present invention.

FIG. 4 is a rear perspective view of the dust collecting filter according to the embodiment of the present invention.

FIG. 5 is a perspective view of a bag-like body showing an embodiment of the present invention.

FIG. 6 is a top view of a main part of the dust collecting filter according to the embodiment of the present invention.

FIG. 7 is an enlarged view of a main part of a dust collecting filter showing an embodiment of the present invention.

FIG. 8 is an operation explanatory diagram of the dust collecting filter according to the embodiment of the present invention.

FIG. 9 is an enlarged view of a main part of the bag-shaped body of the dust collecting filter according to the embodiment of the present invention.

FIG. 10 is a perspective view of an essential part formed by partially cutting the dust collecting filter according to an embodiment of the present invention in an inflated state.

FIG. 11 is a vertical cross-sectional view of a main part of the dust collecting filter according to another embodiment of the present invention in an inflated state.

FIG. 12 is a longitudinal cross-sectional view of a main part of the dust collecting filter according to another embodiment of the present invention during expansion of the bag-shaped body.

FIG. 13 is a development view of the bag-shaped body of the dust collecting filter showing another embodiment 1 of the present invention.

FIG. 14 is an explanatory diagram of the manufacturing process of the material of the bag-shaped body in the dust collecting filter showing other embodiment 1 of the present invention.

FIG. 15 is a surface view of a dust collecting filter showing another embodiment 2 of the present invention.

FIG. 16 is a vertical sectional view of a dust collecting filter according to another embodiment 2 of the present invention in an inflated state.

FIG. 17 is a surface view of a dust collecting filter showing another third embodiment of the present invention.

FIG. 18 is a vertical sectional view of a dust collecting filter according to another embodiment 3 of the present invention in an inflated state.

FIG. 19 is a surface view of a dust collecting filter showing another embodiment 4 of the present invention.

FIG. 20 is a vertical cross-sectional view of a dust collecting filter showing a fourth embodiment of the present invention.

FIG. 21 is a perspective view of an essential part formed by cutting a part of the dust collecting filter in the middle of expansion, showing a conventional example.

FIG. 22 is a vertical cross-sectional view of a main part of a conventional dust collecting filter in an inflated state.

[Explanation of symbols]

10 ... Dust collection filter, 17 ... Bag-shaped body, 17a, 17b
... Opening edges on both sides, 17c ... Inflow port, 18 ... Filter medium, 18a,
Reference numeral 18b ... Side portion, 18c ... Superposed portion, 18d ... One side end of filter material, 18e ... Non-adhered portion, 19 ... Mouth plate, 19a ... Dust suction port.

Claims (19)

[Claims] 1. An outer peripheral edge of an inflow port provided in a bag-shaped body obtained by sealing the opposite side portions of a sheet-shaped filter medium by laminating and adhering them to each other and sealing both side opening edges of the tube. And a mouth plate provided at the dust suction port that communicates with the inflow port, and the overlapping portion of the filter medium is at least one side of the filter medium located on the inner wall side of the bag-shaped body. In the dust collecting filter for an electric vacuum cleaner, the end of which is a non-adhesive portion, the inflow port and the overlapping portion of the filter medium are formed by the air flow flowing into the bag-shaped body from the inflow port, The dust collecting filter for an electric vacuum cleaner, wherein one end of the filter material, which is a non-adhesive portion, is arranged so as to have a positional relationship of being pressed toward the inner wall of the bag-shaped body. 2. A bag-shaped body obtained by sealing the opposite side portions of a sheet-shaped filter medium by laminating and adhering them to each other, and sealing the both side opening edges of the cylinder, and the bag-shaped body. And a mouth plate made of cardboard that is provided with a dust suction port that is connected to the outer periphery of the inflow port and that communicates with the inflow port, and the overlapping portion of the filter media is at least the inner wall side of the bag-shaped body. In the dust collecting filter for an electric vacuum cleaner, the one side end of the filter medium located at is a side end of the filter medium located on the inner wall side of the bag-shaped body from the inflow port. A dust collecting filter for an electric vacuum cleaner, characterized in that opposite sides of the filter medium are overlapped with each other so as to be in a direction opposite to a direction in which the air flows into the bag-shaped body. 3. A bag-shaped body obtained by sealing opposite side edges of a sheet-shaped filter medium by stacking and adhering them to each other, and sealing both side opening edges of the cylinder, and a bag-shaped body provided on the bag-shaped body. A mouth plate which is attached to the outer periphery of the inflow port and is provided with a dust suction port communicating with the inflow port, and the overlapping portion of the filter media is located at least on the inner wall side of the bag-shaped body. However, in the dust collecting filter for an electric vacuum cleaner, wherein one side end of the filter medium is a non-adhesive portion, the non-adhesive portion is not turned over by an air flow flowing into the bag-shaped body from the inflow port. Thus, the dust collecting filter for the electric vacuum cleaner, characterized in that the opposite sides of the filter medium are overlapped with each other. 4. The dust collector for an electric vacuum cleaner according to claim 1, wherein the bag-shaped body is formed into a horizontally long tubular shape, and a bellows portion is formed along a longitudinal direction of the bag-shaped body. filter. 5. The filter for the electric vacuum cleaner according to claim 1, wherein the bag-shaped body has a horizontally long tubular shape and is folded rearward from the back side of the mouth plate. 6. The dust collecting filter for an electric vacuum cleaner according to claim 5, wherein the mouth plate is integrally formed with a covering lid for covering the dust suction opening. 7. A bellows part is provided along the longitudinal direction of the bag-shaped body.
7. A dust collector for an electric vacuum cleaner according to claim 5 or 6, wherein a single piece is provided, and a folding depth dimension of a bellows portion closer to the mouth plate is set to be larger than a folding depth dimension of the remaining bellows portion. filter. 8. A bellows portion is provided on both sides along the longitudinal direction of the bag-shaped body, and the bag-shaped body is folded on the back side of the mouth plate so as to be orthogonal to the both bellows parts. 7. The electric vacuum cleaner according to claim 6, wherein the mouth plate projects outward from one of the bellows parts, and the blocking lid projects outward from the other bellows part. Dust collection filter. 9. The inflow port is provided in the central upper part of the surface of the bag-shaped body, and the non-adhesive part of the overlapping portion of the filter media is located below the inflow port. The dust collecting filter for an electric vacuum cleaner according to claim 5, 6, 7 or 8. 10. When the mouth plate and the bag-shaped body are installed in a dust collecting chamber of an electric vacuum cleaner, the sticking portion is located off the projection space of the inlet portion of the mouth plate. The dust collecting filter for an electric vacuum cleaner according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9. 11. The dust collecting filter for an electric vacuum cleaner according to claim 1, wherein the sealing of the opening edges on both sides of the cylinder is performed by folding back and adhering the opening edges on both sides. . 12. The inflow port is located on the front surface side of the bag-shaped body, and the overlapping portion of the filter media is located on the back surface side of the bag-shaped body. The dust collecting filter for an electric vacuum cleaner according to 1, 2, or 3. 13. The superposed portion of the filter medium is adhered at its central portion with an adhesive, and both ends of opposite sides of the filter medium are not adhered. Two
Alternatively, the dust collecting filter for an electric vacuum cleaner according to item 3. 14. The dust collecting filter for an electric vacuum cleaner according to claim 1, wherein the filter medium is made of Japanese paper or synthetic paper containing resin. 15. The dust collecting filter for an electric vacuum cleaner according to claim 1, wherein the overlapping portions of the filter media are attached by using a paste or a heat-sealing agent. 16. The filter for an electric vacuum cleaner according to claim 1, wherein the bag-shaped body has a double structure in which two sheet-shaped filter media are partially adhered. 17. The filter for an electric vacuum cleaner according to claim 16, wherein the bag-shaped body is made of an inner filter medium having a greater air permeability and a thinner thickness than an outer filter medium. 18. The bag-shaped body is formed by superposing opposing peripheral members of an outer filter medium, and at least one side edge of the outer filter medium, which is located on the inner wall side of the outer filter medium, of the overlapping portion is not attached. Moreover, one side edge of the inner filter medium located on the inner wall side of the inner filter medium is projected outward than one side edge of the outer filter medium located on the inner wall side of the outer filter medium. The dust collecting filter for an electric vacuum cleaner according to claim 17, wherein. 19. The vacuum cleaner according to claim 18, wherein one end of the inner filter medium, which is located on the outer wall side of the inner filter medium, is located between the non-adhered portions of the outer filter medium. Dust collection filter.