JPH0443661B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a vacuum cleaner comprising a disposable paper bag fine filter and a reusable container-shaped dust collection filter capable of capturing fine dust.

[Prior Art] As shown in Japanese Patent Publication No. 32-883, this type of vacuum cleaner has a fine filter (secondary filter) that repeatedly acts to prevent dust from flowing into the motor located downstream of the filter. It is located on the joining surface of the hemispherical main body case that houses the paper bag fine filter, is attached to the hemispherical main body case side, and has a flat pan shape. It has been known. Furthermore, as a fine filter that is used repeatedly,
As shown in No. 50-116253, there is a paper bag installed on the inlet side of an electric blower in a filter storage chamber that stores a fine filter, but it is not shaped like a container.

The above-mentioned Special Publication No. 32-883 and the above-mentioned Utility Model Publication No. 1973-
None of the vacuum cleaners of No. 116253 are configured to attach and detach the paper bag fine filter and the repeatedly used fine filter together from the opening of the filter storage chamber.

For a configuration in which two or more types of filters can be installed and removed at the same time from the opening of the filter storage chamber, Jikosho
No. 48-27777 and Japanese Patent Publication No. 55-129024 are known.

[Problems to be Solved by the Invention] In the above-mentioned Japanese Patent Publication No. 32-883, when cleaning is performed without attaching a paper bag fine filter to the hemispherical lid, the collected dust is formed into a flat fine filter. The accumulated dust has a drawback that when the hemispherical lid is opened, the accumulated dust falls from the flat, fine-mesh filter to the outside of the main body case and scatters.

Furthermore, the above-mentioned Utility Model Application Publication No. 50-116253 has the disadvantage that if cleaning work is performed without installing a paper bag fine filter in the filter storage chamber, the collected dust will scatter and adhere to the filter storage chamber. .

Furthermore, the above-mentioned Japanese Patent Publication No. 32-883 and the above-mentioned Utility Model Publication No.
No. 50-116253 both have the disadvantage that the disposable paper bag fine filter cannot be removed from the filter storage chamber together with the repeatedly used fine filter, so it is not possible to easily dispose of the collected dust. have.

Also, Utility Model Publication No. 48-27777 and JP-A-55-
No. 129024 has a structure in which two or more types of filters can be installed and removed at the same time from the opening of the filter storage chamber, but the filter storage chamber cannot be opened until two or more types of filters are stored in the filter storage chamber as a set. Since the airtightness between the opening and the lid that closes the opening is maintained, one of the two or more types of filters is removed and the remaining filter is stored in the filter storage chamber. In this case, there is a disadvantage that the airtightness between the opening of the filter storage chamber and the lid is insufficient.

The object of the present invention has been made in view of the above-mentioned drawbacks, and is aimed at a state in which a paper bag fine filter and a reusable dust collection filter are stored together in a filter storage chamber, or a reusable dust collection filter is stored in a filter storage chamber. Cleaning work that collects fine particles is possible in either state, with only the dust filter stored, and in both of the above two states, simply closing the opening of the filter storage chamber with the lid body is sufficient. The lid body, the opening of the filter storage chamber, and one or both of the above-mentioned filters can be sufficiently maintained airtight, and the paper bag fine filter and the repeatedly used dust collection filter can be taken out from the opening of the filter storage chamber together. We are here to provide you with a vacuum cleaner that can do the job.

[Means for Solving the Problems] The present invention has been made to solve the above problems, and includes a vacuum cleaner body in which a motor is housed in the rear part and a filter storage compartment is formed in the front part; A lid body that closes the opening of the chamber and has a suction port, a dust collection filter that is removably stored in the filter storage chamber through the opening, and an air inlet that communicates with the suction port of the lid body. a disposable paper bag fine filter having a plate and housed in the dust collection filter, and provided on the lid body and the vacuum cleaner body in a detachable or openable and closable manner; In the vacuum cleaner, the vacuum cleaner has a connection port that communicates with the suction port and communicates with the air inflow port of the mounting plate, wherein the dust collection filter includes a filter medium capable of capturing dust including fine dust and a frame made of synthetic resin. The container is formed into a shape-retaining container shape, and the lid, the dust collecting filter, and the filter storage chamber are kept airtight between the lid and the opening of the filter storage chamber. Airtight packing is provided, and the connection port of the lid is provided with a connection packing that is separate from the airtight packing and maintains airtightness between the air inlet of the mounting plate and the connection port. This vacuum cleaner is characterized by:

[Function] In normal vacuum cleaner work, the dust collection filter that is used repeatedly is stored in the filter storage chamber through the opening of the filter storage chamber, and then the filter is removed using the lid body while the paper bag fine filter is stored inside the dust collection filter. Close the storage room opening. When the motor is driven in this state, dust including fine dust flows into the paper bag fine filter from the suction port of the lid and is collected. In this case, airtightness between the lid, the dust collecting filter, and the opening of the filter storage chamber is maintained by airtight packing provided on the paper bag fine filter.

When disposing of dust containing fine dust collected by the paper bag fine filter, open the lid, take out the paper bag fine filter together with the dust collection filter from the filter storage chamber, and transport it to a garbage disposal site where you can dispose of the paper bag fine filter. Just remove it from the dust filter and dispose of it. In this case, since the paper bag fine filter is covered with the dust collecting filter, it will not get caught in the filter storage chamber and be torn when the paper bag fine filter is removed from the filter storage chamber. Even if it is torn, the dust containing fine dust can be retained in the dust collection filter, and the dust disposal work is simple.

When the container-shaped dust collection filter is taken out from the opening of the filter storage chamber after cleaning, the shape retention of the dust collection filter prevents the dust collection filter from expanding larger than the opening of the filter storage chamber. , the dust collection filter can be taken out smoothly. Furthermore, when removing the paper bag fine filter from the container-shaped dust collection filter after vacuuming, due to the shape retention of the dust collection filter,
Since the paper bag fine filter does not swell larger than the opening of the dust collecting filter, the paper bag fine filter can be taken out from the dust collecting filter without difficulty.

[Example] The present invention will be explained in detail based on drawings of an example.
In the drawing, a vacuum cleaner body 1 has a motor 2 at the rear.
is stored therein, and a filter storage chamber 1a is defined in the front part. At the rear of the vacuum cleaner body 1,
A cord reel (not shown) for winding the electric cord 3 is housed. The motor 2 is supported in a vacuum cleaner body 1 in a vibration-proof manner by a vibration-proof rubber 4.
The handle 5 is formed on the top surface of the cleaner body 1. Wheels 6 and casters 7 are provided on the lower surface of the cleaner body 1. The opening 8 of the filter storage chamber 1a of the cleaner body 1 is closed by a lid 9. The lid body 9 is connected to the vacuum cleaner body 1 by a rotating shaft 10.
The clamping device 11 is rotatably attached to the
The opening 8 of the filter storage chamber 1a is attached so that it can be opened and closed freely. On the lid body 9,
A suction port 12 to which a suction hose is connected is formed. The suction hose has an extension pipe and a suction port (not shown).
is connected.

A connection port 13 communicating with the suction port 12 is provided on the back surface of the lid body 9. In the connection port 13,
A connecting packing 14 made of an elastic material such as rubber or vinyl chloride is provided. A repeatedly used dust collecting filter 15 stored in the filter storage chamber 1a from its opening 8 has a filter medium 1 made of a fine filter such as non-woven fabric or filter cloth.
6 and a synthetic resin frame 17 are integrally formed into a container shape. The dust filter 15 is made by placing a filter medium 16 in advance in an injection molding alloy mold for molding synthetic resin, and then pouring resin to form a frame 17. The filter medium 16 is kept in a substantially fixed shape by the frame 17 and does not change its shape freely. The frame body 17 includes a flange portion 18 that serves as an open end of the dust collection filter 15;
A large number of air-impermeable spacers 19 are provided.
An airtight packing 20 made of an elastic material such as rubber or vinyl chloride is fitted into the flange portion 18 of the dust collecting filter 15.

The disposable paper bag fine filter 21 includes a bag-like filtration part 22 made of Japanese paper or the like pasted together in a bag-shape, and a mounting plate fixed to the bag-like filtration part 22 by a method such as adhesive and made of corrugated paper or the like. It consists of 24. The mounting plate 24 has a bag-like filtration section 2.
An air inlet 23 is formed to allow dust to flow into the interior.

The connection packing 14 is connected to the connection port 13 of the lid body 9.
and the air inlet 23 of the mounting plate 24 of the paper bag fine filter 21,
The lid body 9 is secured to the vacuum cleaner body 1 by the clamping device 11.
When the connecting port 13 is fixed to the mounting plate 24, the connecting port 13 is clamped between the outer periphery of the connecting port 13 and the mounting plate 24, and the airtightness between the two is automatically maintained.

The airtight packing 20 maintains airtightness between the lid 9, the dust collecting filter 15, and the opening 8 of the filter storage chamber 1a, and is made separately from the connection packing 14.

The dust collecting filter 15 has a tapered shape that is wide on the exit side and narrow on the back side with respect to the opening 8 of the filter storage chamber 1a of the cleaner body 1. The spacer 19 of the dust collection filter 15 is the paper bag fine filter 2.
This prevents the paper bag fine filter 21 and the filter medium 16 from coming into complete contact with each other when the dust filter 1 swells in the dust collection filter 15, and forms an air gap between the paper bag fine filter 21 and the filter medium 16. It is something to do.

The dust removal plate 25 is provided in contact with the outer wall of the dust collection filter 15 and between the filter storage chamber 1a and the dust collection filter 15. The dust removal plate 25 is
It is biased by a spring body 26 so as to be in constant contact with the outer wall of the dust collecting filter 15. Operation knob 2
7, insert the dust removal plate 25 into the spring body 2 from outside the vacuum cleaner main body 1.
It is provided in the cleaner body 1 so that it can be pulled against the spring force of the spring 6. Dust removal plate 2
5. The spring body and the operating knob 27 constitute a simple dust removal device.

In the above configuration, normally a dust collection filter 15 and a paper bag fine filter 2 are used as shown in FIG.
Use in combination with 1. When the motor 2 is operated in this state, the dust-containing air flows into the inside of the paper bag fine filter 21 as shown by the arrow from the suction port 12 provided on the lid body 9 through the suction port, extension pipe, and hose (all not shown). Inflow. Here, the inflowing dust is filtered by the bag-like filter 22.

Conventionally, the filtration performance of this type of filter is 90-95% even when the particle size of dust is 5μ or more.
The remaining 5 to 10% passes through the bag-like filtration section 22. The passed dust is further filtered by the filter material 16 of the dust collecting filter 15. The dust filtration performance of this filter material 16 also depends on the dust particle diameter.
It has been conventionally known that 5μ or more is 90 to 95%, and 5 to 10% of the dust that has passed through the paper bag fine filter 21 is filtered here. Therefore,
In the vacuum cleaner according to this embodiment, the dust collection efficiency of the sucked dust is 99 to 99.75% after passing through the two filtration parts, which is extremely excellent dust filtration performance in this type of filter dust collection. becomes.

Next, the state of each part when the motor 2 is operated will be described in more detail. Paper bag fine filter 21
It is like a balloon, and when the wind flows as shown by the arrow and wind pressure is applied, it tries to expand in the direction of increasing volume. However, the bulge is suppressed by the dust collecting filter 15 and does not become larger than the inner surface of the dust collecting filter 15. Further, the bag-like filtering part 22 of the paper bag fine filter 21 is the dust collecting filter 1.
The spacer 19 provided on the inner surface of the dust collection filter 15 suppresses the bulge, and the filter material 16 of the dust collection filter 15 does not come into close contact with the filter material 16, but is kept at an appropriate distance. There is always some emptiness. As mentioned earlier, this serves to increase the efficiency of collecting dust that has blown through the paper bag fine filter 21, and at the same time prevents it from adhering to the surface of the dust collected by the filtration material 16 of the dust collection filter 15. The collected dust adheres to the outer surface of the paper bag fine filter 21,
This serves to prevent the outer surface from becoming extremely dirty. In this way, when cleaning and dust suction are continued in the same way as with conventional vacuum cleaners, dust adheres to each filter section and as the ventilation resistance increases, the suction strength gradually decreases. In such a case, if you operate the operation knob 27 provided for dust removal from the filter and apply impact vibration to the dust collection filter 15 with the dust removal plate 25, the vibration will be transmitted to the entire surface of the dust collection filter 15. be done. This vibration transmission is achieved through the spacer 19 of the frame 17 made of synthetic resin or the like.
This is efficiently carried out over the entire surface of the filtration material 16. That is, first, the dust adhering to the filtering material 16 of the dust collecting filter 15 is separated from the filtering material 16, and falls downward through the air between the dust collecting filter 15 and the paper bag fine filter 21. Dust is removed from the filter surface. Further, the vibration applied to the dust collecting filter 15 by the dust removal plate 25 passes through the spacer 19 and is applied to the bag-shaped filtering part 22 of the paper bag fine filter 21 which is supported by the spacer 19. is also transmitted. Therefore, the dust adhering to the inner surface of the bag-shaped filter section 22 is also removed at the same time, and the paper bag fine filter 2
1 will be accumulated at the bottom of the bag. In this way, the air permeability of each filtration section of the paper bag fine filter 21 and the dust collection filter 15 is restored, and cleaning can be continued efficiently and with strong suction power again.
Continue cleaning as described above, and when the inside of the paper bag fine filter 21 becomes full of dust, operate the clamping device 11 of the lid 9 to open it as shown in FIG. If you pull out the paper bag from the dust collection filter 15 and throw away the dust together with the paper bag fine filter 21, you will not have to touch the dust with your hands and there will be no need to clean the filter, allowing for easy and sanitary dust disposal. be able to. Once you have finished discarding the dust, insert a new paper bag fine filter 21 into the dust collection filter 15.
Place the mounting plate 24 part of the paper bag fine filter 21 on the airtight packing 20 fitted on the
When the lid 9 is closed, the connection port 13 of the lid 9 is inserted into the intake port 23 of the mounting plate 24, and at the same time, the connection packing 14 comes into contact with the surface of the mounting plate 24 and is held airtight. It can be set to a state where it can be cleaned.

Next, for example, since the paper bag fine filter 21 is disposable, if replenishment is not successful because it has been spilled or forgotten to buy, or if disposable is not economical and the dust collection filter 15 is inevitably used repeatedly, it can be used. If desired, use the paper bag fine filter 2 as shown in Figure 3.
It can also be used without setting it to 1.
In this case, the suction dust is directly passed through the dust collection filter 1.
The dust is collected by the filter material 16 of No. 5 and accumulated in the dust collection filter 15. Dust removal from the filter material 16 is performed in the same manner as described above. After sucking a lot of dust into the dust collecting filter 15 in this way, open the lid 9 and remove the dust collecting filter 1.
5 itself and throw away the dust accumulated inside the dust collection filter 15. And dust collection filter 15
If it is set again in the opening 8 of the vacuum cleaner main body 1, the filtration device can be used repeatedly. However, when using this method, when discarding dust from the dust collection filter 15, the dust flies up and makes your hands and clothes slightly dirty, making it less sanitary than when using the paper bag fine filter 21. Although this is unavoidable, it is still not much different from the dust disposal of conventional vacuum cleaners.

Next, the above embodiment will be compared with the conventional example. FIG. 6 shows a conventional vacuum cleaner. In the figure, 28 is a cloth bag filter made of a filter cloth such as cloth, 29 is a mouth packing provided at the mouth of the cloth bag filter 28, and 30 is a disposable paper set along the inside of the cloth bag filter 28. Shows filter. This kind of configuration is a typical example, but
Since the cloth bag filter 28 and the paper filter 30 are used in almost complete contact with each other, they cannot perform their respective filtration functions sufficiently, resulting in poor filtration performance as well as dust attached to the surface of the cloth bag filter 28. It is clear that the dust adheres to the outer surface of the paper filter 30, and the attached dust may be scattered outside the main body when the paper filter 30 is discarded, or it may stain the user's hands, reducing the hygiene of disposable filters. This will greatly impede the benefits of targeted dust treatment. In addition, the cloth bag filter 28 itself does not have shape retention properties, so when a load as shown by the arrow is applied due to the wind pressure and static pressure that occur when the vacuum cleaner is operated, it expands like a balloon and expands into the opening 8 of the vacuum cleaner body 1. It will swell even bigger. Therefore, the paper filter 30 also swells accordingly, and dirt accumulates therein, resulting in a larger paper filter 30 being pulled out from a smaller opening when disposing of trash, making it difficult to take out or even impossible to take out. If you try to pull it out forcibly, the paper filter 30 will tear and the dust that has accumulated inside will scatter. In order to prevent this kind of bulging phenomenon of each filter, there is a method of providing a large number of ribs on the vacuum cleaner body 1, or attaching a separate cage, etc., but the structure becomes complicated and the manufacturing cost increases. It has the disadvantage of being uneconomical.

In the case of normal cleaning work, that is, when using a disposable paper bag fine filter as shown in FIG. The dust that is set and sucked is completely collected inside the paper bag fine filter 21 and does not leak to the outside.

Next, when the paper bag fine filter 21 is not used and the dust collecting filter 15 is used in the state shown in FIG. The dust flowing in from the port 12 does not leak out of the dust collecting filter 15 and is completely accumulated inside the dust collecting filter 15.

FIG. 7 is a diagram showing another embodiment of the vacuum cleaner according to the present invention. This embodiment shows an example in which the mounting plate 24 of the paper bag fine filter 21 is miniaturized. The plate 24 contacts the connection packing 14 and is held airtight.

[Effects of the Invention] As described above, according to the present invention, (1) When a paper bag fine filter and a container-shaped dust collection filter are housed together in the filter storage chamber for vacuum cleaning, connection packing and The airtight packing also ensures the airtightness necessary for collecting dust when cleaning is carried out by storing only the container-shaped dust collecting filter in the filter storage chamber.

(2) Since the connection packing and airtight packing can be set freely, the shapes of the connection packing and airtight packing as well as the shapes of the paper bag fine filter and container-shaped dust collection filter can be set arbitrarily. It is possible to easily select a shape that fully exhibits the characteristics of each type of dust collection filter.

(3) As in the conventional example shown in Figure 6, when the packing of two types of filters is shared, or when the openings of two types of filters are configured to overlap, it is necessary to remove one filter. In this case, the packing is permanently deformed by the amount of time that occurs when the filter is removed, so it is not possible to obtain a sufficient airtight effect to prevent dust leakage, etc. However, in the present invention, The air inlet of the mounting plate and the connection port of the lid are made airtight by connecting packing, and the lid, the container-shaped dust collection filter, and the filter storage chamber are made airtight by airtight packing. Even if the paper bag fine filter is removed from the container-shaped dust collecting filter, a sufficient airtight effect can be obtained to prevent dust from leaking.

(4) The dust filter is shaped like a container with a filter material that can capture dust, including fine dust, and a frame made of synthetic resin, etc., and it retains its shape, so it does not inflate like a balloon, so it cannot be used after cleaning. In addition to being able to be pulled out smoothly from the opening of the filter storage chamber, the fine paper bag filter stored inside the container-shaped dust collection filter can also be inflated like a balloon due to the shape retention of the dust collection filter. Therefore, after vacuuming, the paper bag fine filter can be smoothly pulled out from the container-shaped dust collection filter. This effect can be achieved, so whether the paper bag fine filter and the container-shaped dust collection filter are stored together in the filter storage chamber, or the container-shaped dust collection filter alone is stored in the filter storage chamber, Cleaning work that collects fine dust is possible, and in both of the above two situations, simply closing the opening of the filter storage chamber with the lid will separate the lid and the opening of the filter storage chamber from both of the above. It is an extremely easy-to-handle electric filter that can sufficiently maintain airtightness of one or both of the filters, and also allows the paper bag fine filter and the reusable container-shaped dust collection filter to be taken out together from the opening of the filter storage chamber. You can get a vacuum cleaner.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view showing an embodiment of the vacuum cleaner according to the present invention, FIG. 2 is a longitudinal cross-sectional view showing an example of how the vacuum cleaner is used, and FIG. 3 is a longitudinal cross-sectional view showing an example of how the vacuum cleaner is used. FIG. 4 is a perspective view of the main parts of the embodiment, FIG. 5 is a partially sectional perspective view showing the assembled state of the main parts of the embodiment, and FIG. 6 is a diagram of a conventional vacuum cleaner. Partial longitudinal sectional view showing an example of a dust collection part, No. 7
The figure is a longitudinal sectional view showing another embodiment of the present invention. 1... Vacuum cleaner body, 1a... Filter storage chamber, 2... Motor, 8... Opening, 9... Lid body, 1
2... Suction port, 13... Connection port, 14... Connection packing, 15... Dust collection filter, 16... Filter medium, 17... Frame, 20... Airtight packing, 2
1...Paper bag fine filter, 23...Air inlet, 24...Mounting plate.

Claims (1)

[Scope of Claims] 1. A vacuum cleaner body that houses a motor in its rear part and has a filter storage chamber defined in its front part, and a lid body that closes an opening of the filter storage chamber and has a suction port; A disposable dust filter, which has a dust collecting filter removably stored in the filter storage chamber through the opening, and a mounting plate formed with an air inlet communicating with the suction port of the lid body, and which is stored in the dust collecting filter. a paper bag fine filter; the lid body is provided on the vacuum cleaner body so as to be detachable or openable and closable, and the back side of the lid body communicates with the suction port and communicates with the air inlet of the mounting plate. In the vacuum cleaner formed with a connection port, the dust collecting filter is formed into a shape-retaining container shape by a filter medium capable of capturing dust including fine dust and a frame made of synthetic resin, etc., and the lid body and an opening of the filter storage chamber, an airtight packing is provided to maintain airtightness between the lid body, the dust collecting filter, and the filter storage chamber; A vacuum cleaner characterized in that a connection packing is provided which is separate from the airtight packing and maintains airtightness between the air inlet of the mounting plate and the connection port. 2. Claim 1, wherein the electrical connection port is configured to fit inside the air inflow port.
Vacuum cleaner as described in section. 3. The vacuum cleaner according to claim 1, wherein the airtight packing is fitted onto a flange portion of the dust collection filter. 4. Claim 1, wherein the connection packing is held between the mounting plate and the lid when the opening of the filter storage chamber is closed with the lid. The vacuum cleaner mentioned.