JPS6058845B2 - vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an improvement in a vacuum cleaner having a dust collection bag made of a material such as paper that cannot be reused and which is used to throw away all collected dust.

[Prior art]

Although this type of vacuum cleaner is easy to dispose of, it has the disadvantage that a relatively large amount of fine dust blows through the dust collection bag, making the exhaust air dirty.

Therefore, an attempt was made to provide a second fine dust collection filter that can be used continuously, regardless of whether the first fine dust collection filter is replaced, on the downstream side of the dust collection bag (first fine dust collection filter). As a result, the fine dust that has passed through the first fine dust collection filter is collected by the second fine dust collection filter.
The drawback of dirty exhaust gas has been resolved. However, with the provision of the second fine dust collection filter, new problems have arisen.

In the method described in Japanese Utility Model Application Publication No. 52-27176, when it is full of dust, it is replaced with a new first fine dust collection filter, but the second fine dust collection filter with dust attached continues to be used. Therefore, the suction ability of the vacuum cleaner as a whole does not fully recover.

In the conventional vacuum cleaner, when the first fine dust collecting filter is replaced repeatedly, the amount of accumulated dust attached to the second fine dust collecting filter increases, and the suction capacity of the vacuum cleaner further decreases. [Problems to be Solved by the Invention] Therefore, in order to eliminate the above-mentioned drawbacks, the present invention provides the following subdivision: ``The dust collected by the dust filter can be easily disposed of, and the suction ability can be completely restored.'' There are things that are trying to provide something.

[Means for solving problems]

The dust case has a dust inlet side that can be opened and closed freely, and has a breathable and flexible bag shape that collects dust that is inhaled with the air and allows the collected dust to be stored and disposed of as is. A first fine dust collecting filter formed to have a diameter of 100 mm and a second fine dust collecting filter capable of collecting dust of a size similar to that of the first fine dust collecting filter are arranged with an interval in the dust case. , the first fine dust collection filter is inserted from the inlet side opening of the dust case, and
The vacuum cleaner is configured such that the dust collected by the second fine dust collection filter is disposed of through an opening on the main body side of the dust case.

[Embodiment] An embodiment of the present invention will be described below based on the drawings.

As shown in FIGS. 1 and 2, this vacuum cleaner is comprised of a main body case 1 and a dust case 2. The main body case 1 and the task case 2 are detachably connected. An electric blower 3 and a cord reel 4 are installed inside the main body case 1.
is provided.

A power cord 5 is wound around the cord reel 4. An outer cover 6 that can be opened and closed is provided on the front side of the dust case 2.

Similarly, on the front side of the dust case 2, an inner cover 7 which can be opened and closed is placed inside the outer cover 6. The outer lid 6 has a size that completely closes the front opening of the dust case 2, but the inner lid 7 has a size that closes the lower half of the front opening. Inside the dust case 2, a first fine dust collection filter 8 is provided on the front side, and a dust collection and removal unit 9 is provided on the rear side thereof.

The first fine dust collecting filter 8 is formed into a bag shape using a filter paper having air permeability and flexibility.

A support plate 10 is provided on the mouth side of the first fine dust collecting filter 8. The support plate 10 is made of hard paper such as cardboard. 12 is an opening on the suction port side of the dust case 2, and 12'' is an opening on the main body side.

The first fine dust filter 8 is folded up as shown in FIG. 2 before use.

This is attached to the recess 11 of the inner lid 7 and the dust case 2.
The support plate 10 is attached to the step formed at the top of the front opening of the
It is made to fit. The reason why the first fine dust collection filter 8 swells as shown in FIG. 1 is due to the force of the wind sucked into the dust case 2. As shown in FIGS. 1 and 2, a filter holding rib 13 surrounding the first fine dust collecting filter 8 is formed on the inner wall of the dust case 2. As shown in FIGS. The outside of the swollen first fine dust collecting filter 8 is held down by the filter holding rib 13 and does not come into close contact with the inner wall of the dust case 2, so that ventilation is created between the outside of the first fine dust collecting filter 8 and the inner wall of the dust case 2. A road will be formed. The outer cover 6 is provided with a suction port 14 into which a hose is inserted.

By closing the outer cover 6, the suction port 14 is opened to the support plate 10 provided on the eight first fine dust collection filters.
Facing entrance 15. The dust collection and removal unit 9 is shown in Fig. 1 and Fig. 3.
As shown in the figure, the main parts are a coarse filter frame 16, a second fine dust collecting filter 17, a filter support plate 18, and a holding seal packing 19.

The coarse dust filter frame 16 has a flat coarse dust filter 20 on its front surface, and auxiliary coarse dust filters 21 stretched on its side and top surfaces.

Both filters 20 and 21 are made of nylon, polyethylene, polypropylene, etc. knitted into a net shape.

The ventilation openings of both filters 20 and 21 are sufficiently larger than the ventilation openings of the first fine dust collecting filter 8. The first fine dust collection filter 8 can collect fine dust such as sand, whereas both filters 20 and 21 allow fine dust to pass through. The second fine dust collecting filter 17 is made of a nonwoven fabric formed into a wave shape, and is formed in a pair on the second fine dust collecting filter frame 22 made of plastic.

The size of the ventilation holes of the second fine dust collecting filter 17 is approximately the same as the size of the ventilation holes of the first fine dust collecting filter 8. The second fine dust collection filter 17 is provided on the downstream side of the first fine dust collection filter 8 to form a two-stage structure. The purpose is to collect the dust with a dust filter 17 and to minimize the amount of fine dust contained in the exhaust gas, thereby making the exhaust gas clean.

The filter support plate 18 has a large gear 23 for a dust remover on the front side.
A dust remover manual handle 24 is rotatably supported on the rear side. A dust remover 25 formed of an elastic material is fixed to the front surface of the large gear 23 for the dust remover with a screw 26. Also this screw 2
6, the manual handle 24 for the dust remover is also connected to the large gear 2 for the dust remover.
It is fixed at 3. By turning the dust remover manual handle 24, the dust remover 25 rotates together with the large dust remover gear 23. When the rear side of the second fine dust collecting filter frame 22 is aligned with the front side of the filter support frame 18 and the holding seal backing 19 is fitted around the outer periphery of both, the two become one pair.

When the coarse dust filter frame 16 is placed over the second fine dust filter 17 from the front side, the dust collection/removal unit 9 is constructed. When the dust collection and removal unit 9 is fitted into the dust case 2 from the rear opening, the outer periphery of the holding seal backing 19 is hermetically joined to the inner wall of the dust case 2.

The tip of the dust remover 25 is in contact with the back surface (the back surface of the dust adhering surface) on the downstream side of the second fine dust collection filter 17, so by turning the manual handle 24 for the dust remover, the back surface can be moved to the back side of the second fine dust collecting filter 17. It is bounced by the tip of the 25 and vibrates.

Due to this vibration, the dust adhering to the second fine dust collection filter 17 is shaken off. Dust remover 25, large dust removal gear 23,
The related structure of the dust remover manual handle 24 is referred to as a second fine dust collection filter dust removal device. A percussion vibration type dust removal device is provided inside the coarse dust collection filter frame 16.

This dust removal device removes dust from the coarse dust collection filter 20 and the first fine dust collection filter 8. Figure 1,
The dust removal device will be explained with reference to FIGS. 3, 6, and 7. A vertically running non-ventilation section 27 is provided in the center of the coarse dust collecting filter 20, and tuning fork-shaped vibration transmitting bodies 28 are provided on the left and right sides of the non-ventilation section 27.

The non-ventilated portion 27 and the vibration transmitting body 28 are made of plastic and are integrally formed with the coarse dust collecting filter 20. The vibration transmitter 28 and the non-ventilated portion 27 are the upper side 2 of the vibration transmitter 28.
They are connected by 9. A receiving protrusion 30 is provided at the center of the upper side portion 29 and protrudes toward the back side of the coarse dust collecting filter 20. A support boss 31 is provided below the non-ventilated portion 27.
is formed.

A striking body 32 is fixed to the support boss 31 with a washer 33 and a screw 34. The upper side, which is the free end of the striking body 32, is placed in contact with the receiving protrusion 30. Since the striking body 32 is formed of a leaf spring, when the free end is pulled and released, it hits the receiving protrusion 30 vigorously. The receiving protrusion 30 vibrates, and this vibration is transmitted to the entire coarse dust collecting filter 20 via the vibration transmitting body 28. Since the vibration transmitting body 28 has a tuning fork shape, vibrations are transmitted well. Also, since the part of the receiving protrusion 30 that is far from the base is struck, the seventh
As shown in the figure, the upper side 29 of the vibration transmitting body 28 is connected to the receiving protrusion 3.
It vibrates in a scene shape around the root of 0. Since the back surface of the first fine dust collection filter 8 is in close contact with the coarse dust collection filter 20, the seesaw-like vibration causes the first fine dust collection filter 8 to vibrate as if being hit from the outside. Dust adhering to the inner surface is shaken off.
In other words, the related components including the coarse dust collecting filter 20, the receiving protrusion 30, the striking body 32, etc. serve as a dust removal device for the first fine dust collecting filter 8. Of course, this dust removal device has the dust removal function of the coarse dust collection filter 20. When dust is collected without using the first fine dust collection filter 8, coarse dust adheres to the coarse dust collection filter 20.
At this time, dust removal from the filter 20 is effectively performed. A bearing 35 is mounted on the upper side of the second fine dust collection filter frame 22.
is provided.

A cam body 37 is rotatably supported by this bearing 35 via a shaft seal backing 36 . This cam body 37 is placed so as to be joined to the free end of the striking body 32.
When the cam body 37 rotates, the free end of the striking body 32 is repelled. The striking body 32 comes off the cam body 37 and suddenly returns due to its own spring force, striking the receiving protrusion 30.
An idle gear body 38, a clutch ring 39, a spring 40, and a connecting cylinder body 41 are attached to the bearing 35 on the back surface of the second fine dust collection filter frame 22.

This attachment 7 is performed by screwing the screw 42 into the cam body 37. The rotation of the cam body 37 is caused by the idle gear body 3
This is done by turning 8.

However, the rotation transmitted from the idle gear body 38 to the cam body 37 fluctuates only in one direction. This is due to the action of the clutch ring 39. The idle gear body 38 is meshed with the large dust removal gear 23.

When the dust removal large gear 23 is rotated, the cam body 37 is rotated. The filter support plate 18 has a bearing 43 on the lower side.
It has

A passive coupling 4 is connected to this bearing 43 via a spring 44.
5 is rotatably supported. Passive coupling 45
A gear is formed on the outer periphery of the This gear is meshed with the large gear 23 for dust removal. The passive coupling 45 is prevented from coming off by a washer 46 and a screw 47. On the other hand, a drive coupling 48 is attached to the lower front of the main body case 1, as shown in FIGS. 1 and 2.

This drive coupling 48 is fixed to an intermediate gear 49 rotatably supported by the main body case 1. The intermediate gear 49 is meshed with a gear 50 formed on the cord reel 4. When the dust case 2 is coupled to the main body case 1, the passive coupling 45 is coupled to the drive coupling 48 as shown in FIG. As a result, the cord reel 4 side and the dust removal large gear 23 and cam body 37 side are connected via the gear rotation transmission mechanism. [Function] The above is a description of one embodiment of the present invention, mainly from the perspective of structure.

Next, explanation will be given mainly from the aspect of operation. When the electric blower 10 is operated, airflow containing dust flows through the hose and suction port 14.
It flows into the first fine dust collection filter 8 through the filter. Here, coarse dust and fine dust are collected. Air and a small amount of fine dust pass through the ventilation holes of the first fine dust collection filter 8, and then pass through the coarse dust collection filter 20 to the second fine dust collection. Head to dust filter 17. Here, the fine dust that has blown through the first fine dust collection filter 8 is removed. The air passes through the second fine dust collection filter 17, passes through the electric blower 3, and is exhausted to the outside of the main body case 1. 1st fine dust collection filter 8
Since the second fine dust collection filter 17 has a two-stage fine dust collection structure, the second stage filter can collect dust that cannot be removed by the first stage filter.

Therefore, the amount of fine dust contained in the exhaust gas can be extremely reduced, making it possible to obtain clean exhaust gas. 1st
As the amount of dust collected by the second fine dust collecting filters 8 and 17 increases, both filters 8 and 17 become clogged.

As the suction capacity decreases, remove dust. Dust is removed from both filters 8 and 17 by rotating the cord reel 4 or the manual handle 24 for the dust remover, as described above. The suction ability is restored again. By repeating this process and collecting dust, the first fine dust collection filter 8 will be filled with dust. At this stage, open the outer cover 6 and open the suction port side of the dust case 2 as shown in Figure 4. Pull out the first fine dust collection filter 8 from the section 12 and throw away the dust together with the filter 8. Disposing of garbage is very easy and hygienic. When a new first fine dust collection filter 8 is attached to the dust case 2, the next cleaning can be carried out immediately.

The second fine dust collection filter 8 is disposed of as shown in FIG. By removing the dust case 2 from the main body case 1, removing the dust collection/removal unit 9 from the main body side opening 12'' of the dust case 2, and slightly tilting the dust case 2, fine dust can be removed from the dust case 2 as shown in the figure. The fine dust is dropped out from the main body side opening 12''. It is not necessary to dispose of this fine dust every time the first fine dust collecting filter 8 is replaced.

This is because the amount of dust collected on the second fine dust collecting filter 17 side is much smaller than on the first fine dust collecting filter 8 side. Ninety percent of the dust is collected by the first fine dust collection filter 8.

The first fine dust collecting filter 8 side and the second fine dust collecting filter 17 side are disposed of separately, but since the second fine dust collecting filter 17 side is disposed of less frequently and the amount of waste is small, the overall If you look at it, it doesn't take much effort to dispose of garbage.

Although the first fine dust filter 8 is made of a relatively weak material such as paper, it does not shake because it is vibrated through the coarse dust filter 20. Furthermore, since the first fine dust filter 8 is received by the flat surface of the coarse dust filter 20, even if a strong air flow containing dust collides with the inner surface of the first fine dust filter 8, it will not break. Furthermore, since the dust removal vibration of the first fine dust collection filter 8 is applied from the outside (back side), dust removal is more effective than when vibration is applied from the inside.

In addition, since it is not on the dust adhering side, it is easy to apply dust removal vibration and the dust removal means is not complicated, and the first fine dust collection filter 8
It is also easy to replace. Like the first fine dust collecting filter 8, the second fine dust collecting filter 17 also applies dust removing vibration to its back surface, so that dust is removed well and it is easy to apply dust removing vibration.

Figures 8 and 9 show the first and second fine dust collection filters 8 and 1.
7 is a graph showing the suction strength and the amount of dust collected.

As shown in FIG. 8 (showing the characteristics of only the first fine dust collecting filter 8), when the first fine dust collecting filter 8 is not subjected to dust removal, the dust collection performance characteristics shown in A are shown.

That is, as the amount of dust collected increases, the first fine dust collection filter 8 becomes increasingly clogged, and the suction strength (suction capacity) rapidly decreases, and the suction strength immediately saturates. The dust collection capacity in this case is assumed to be ■. On the other hand, when dust is collected while timely repeating dust removal using the first fine dust collection filter 8, the dust collection and dust performance characteristics expressed by mouth are exhibited.

This is because the clogging is cleared in a timely manner and the suction strength is prevented from decreasing rapidly. When the suction strength reaches saturation, the dust collection capacity becomes 2.5V to 3V. In other words, the dust collection capacity is increased by 2.5 to 3 times compared to one without dust removal. As shown in FIG. 9, the dust collection performance characteristic (c) of the entire vacuum cleaner is the sum of the dust collection performance characteristic (2) of the first fine dust collection filter 8 and the dust collection performance characteristic (e) of the second fine dust collection filter 17. Become.

For convenience of explanation, an example is shown in which dust removal from both filters 8 and 17 is not performed until the suction strength is saturated. Now, when both fine dust collection filters 8 and 17 are saturated, the amount of suction strength decreases to C.

If the first fine dust collection filter 8 is replaced with a new one, the reduced suction strength b will be completely restored. However, since the amount of decrease in suction strength of this vacuum cleaner as a whole is C, the suction strength as a whole has not completely recovered. That is, the suction strength reduction amount a of the second fine dust collecting filter 17 remains. Therefore, by removing dust from the second fine dust collecting filter 17, the suction strength of the second filter 17 is restored, and the suction strength of the vacuum cleaner as a whole is completely restored. In this way, in the so-called two-stage type in which the second fine dust collection filter 17 is provided downstream of the first fine dust collection filter 8, as long as the second fine dust collection filter 17 is used continuously, the main In order to restore the suction strength of the vacuum cleaner as a whole, the filter 17 must be provided with dust removal means.

A second fine dust collecting filter 17 provided on the downstream side of the first fine dust collecting filter 8 is provided a little apart. In other words, both filters are not placed closely together,
There is a gap between them. Since the interval is provided, the space between the dust collection chambers of the second fine dust collection filter 17 is ensured.

If there is no gap, the dust adhering to and depositing on the second fine dust collecting filter 17 will land on the back surface of the first fine dust collecting filter 8. The first fine dust collecting filter 8 and the second fine dust collecting filter 17 are bound together by the above-mentioned attached dust, and the dust removal vibration necessary for the first fine dust collecting filter 8 cannot be performed effectively. However, in the present invention, the spacing is maintained, so
Both filters 8 and 17 are not connected due to the attached dust.

Therefore, the first fine dust collection filter 8 is effectively vibrated to remove dust, and the dust removal performance is improved. Furthermore, if there is a gap, the dust separated from the second fine dust collection filter 17 will fall smoothly, and the dust removal performance will be improved in this respect as well. [Effects of the Invention] Since the present invention has the above-mentioned configuration, it exhibits the following effects.

(B) The dust case has a structure that allows the dust suction port to be opened and closed freely, and has ventilation and flexibility that allows it to collect dust that is inhaled with the air, and to store and dispose of the collected dust as is. A first fine dust collecting filter formed in a bag shape, a second fine dust collecting filter capable of collecting dust of the same size as the first fine dust collecting filter, and a spaced apart from each other in the dust case. Therefore, a second fine-grained dust filter of the same size is installed downstream of the first fine-grained dust filter, creating a two-stage fine dust collection configuration and minimizing the amount of fine dust contained in the exhaust gas. You can get clean exhaust.

Further, since the first fine dust collection filter is a bag-shaped disposable type, it can be thrown away together with the collected dust, making garbage disposal simple and sanitary. The amount of dust collected by the second fine dust collection filter is extremely small compared to the first fine dust collection filter.

This is because most of the dust including coarse dust and fine dust is collected by the first fine dust collecting filter. The frequency of garbage disposal on the second fine dust collection filter side is lower than that on the first fine dust collection filter side.

For this reason, garbage must be disposed of separately on the first fine dust collection filter side and the second fine dust collection filter side.
Most of the time, it's done on the side of the first fine dust collection filter, so it won't be a hassle to throw out the trash. Since both filters are arranged with an interval in the dust case, a dust collection chamber for the second fine dust collection filter is secured.

If there is no gap, the dust deposited on the second fine dust collection filter will land on the back surface of the first fine dust collection filter. The first fine dust collecting filter and the second fine dust collecting filter are bound together by the above-mentioned attached dust, but in the present invention, since the distance is maintained, the above-mentioned two filters are not connected by the above-mentioned attached dust. Therefore, the dust collection performance of the first fine dust collection filter is improved. Furthermore, if there is a gap, the dust separated from the second fine dust collection filter will fall smoothly from the opening on the main body side, so the dust collection performance will be improved in this respect as well. (b) The first fine dust collection filter is inserted from the suction opening of the dust case, and
The dust collected by the fine dust collection filter is the above-mentioned Das! Since each item is disposed of through the opening on the main body side of the dust case, if you remove dust from the second fine dust collection filter when replacing the first fine dust collection filter with a new one,
You can measure the suction capacity recovery of the entire vacuum cleaner.

For those with a two-stage fine dust collection configuration consisting of a disposable bag-shaped first fine dust collection filter and a second fine dust collection filter that is used continuously, discard the dust from the second fine dust collection filter. Otherwise, even if the first fine dust collection filter is replaced with a new one, the second fine dust collection filter will remain clogged, and the suction capacity of the entire dust collector will not be completely restored.

Since the second fine dust collection filter is used continuously, if the dust is not removed from the opening on the main body side, clogging will progress steadily, so even if you replace it with a new first fine dust collection filter. There may be little hope for recovery of inhalation ability. Therefore, in the present invention, the collected dust is disposed of through two openings, so that cleaning can always be done in good condition with a simple structure.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a longitudinal sectional view of the vacuum cleaner, FIG. 2 is an exploded perspective view of the vacuum cleaner, and FIG. 3 is an exploded perspective view of the dust collection and removal unit. , Figure 4 is the first
Figure 5 shows the state in which the fine dust collection filter is taken out, Figure 5 shows the state in which the dust collection unit is removed and fine dust is thrown away from the dust case, Figure 6 is a rear view of the coarse dust collection filter, and Figure 7 shows the coarse dust collection filter. A diagram showing the dust removal state of the first fine dust collection filter in relation to the relationship between the dust collection filter and the first fine dust collection filter, FIG. 8 is a diagram showing the dust collection performance characteristics of the first fine dust collection filter, and FIG. 9 is a diagram showing the dust collection performance characteristics of the first fine dust collection filter. It is a figure which shows the dust collection performance characteristic when a 1st fine dust collection filter and a 2nd fine dust collection filter are used together. 1...Body case, 2...Dust case, 6...Outer lid, 8...First fine dust collection filter, 12... Dust case inlet side opening, 12″...Body side opening, 17″
Second fine dust collection filter, 25...Dust remover, 3
0... Receiving protrusion body, 32... Hitting body.

Claims (1)

[Claims] 1. In a vacuum cleaner comprising a main body case and a dust case, and the dust case is configured to be separable from the main body case, the dust case is configured such that the dust suction port side can be opened and closed freely, and the dust inhaled with the air is removed. a first fine dust collecting filter formed in the shape of a bag with breathability and flexibility that can collect dust and store and dispose of the collected dust as it is; and a second fine dust collection filter capable of collecting and storing dust of the same size are disposed in the dust case with a space therebetween, and the first fine dust collection filter is inserted from the suction port side opening of the dust case and A vacuum cleaner characterized in that the dust collected by the second fine dust collection filter is disposed of through an opening on the main body side of the dust case.