JPH08140907A - Vacuum cleaner - Google Patents

Abstract

PURPOSE: To increase a dust amount receivable in a dust collecting bag and miniaturize a vacuum cleaner body by providing a cylindrical hose connection connectively inserted into a suction port on one end of a suction hose and providing slidably a compression pipe forcibly shifted into the dust collecting bag to compress the dust in the dust collecting bag inside the hose connection. CONSTITUTION: A suction hose connection 1 forms the outside portion of a double suction hose. A suction pipe fixing pin 2 is incorporated in the hose connection 1, and a compression pipe 3 and a compression releasing spring 6 for normally urging the compression pipe 3 in the compression releasing direction are incorporated inside the hose connection. The suction hose is connected to the compression pipe 3 and united with a grip 4 gripped by a user, in the compression action and a stopper 5 for preventing the excessive compression. A dust collecting bag 7 with a paper rim 10 contacts a packing 9 to be attached removably to a body by a holder 8. When the user shifts the grip 4 to the dust collecting bag side, the compression pipe 3 is inserted into the dust collecting bag 7 to compress the dust.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner which collects dust by sucking dust by the suction force of an electric blower, and particularly an electric vacuum cleaner for compressing the collected dust to increase the dust collecting capacity. Regarding the vacuum cleaner.

[0002]

2. Description of the Related Art Generally, an electric vacuum cleaner is constructed to collect dust sucked from a suction port in a dust bag housed in a dust collection chamber. In this case, in order to facilitate the treatment of the collected dust, if dust is accumulated in the dust bag and the dust bag is clogged, set the electric vacuum cleaner to warm air circulation and raise the temperature of the electric blower. A technique has been proposed in which the heat-shrinking member provided around the main body of the dust-collecting bag is shrunk by the hot air to compress the dust in the dust-collecting bag to reduce the size of the dust-collecting bag so that the dust can be easily disposed (Japanese Patent Laid-Open No. 5-146384). ).

[0003]

In the conventional vacuum cleaner, since the suction air of the electric blower passes through the dust collecting bag and spreads the dust collecting bag, the capacity of the dust collecting bag is irrespective of the amount of collected dust. It becomes almost constant. Therefore, in order to increase the dust collecting capacity, it is necessary to upsize the dust collecting bag. However,
If such a configuration is adopted, there is a problem that the dust bag becomes bulky and it is not easy to remove it from the dust chamber.

Therefore, the prior art described above (Japanese Patent Laid-Open No. 5-1
As disclosed in Japanese Patent No. 46384), the dust collecting bag of the dust collecting bag is compressed by heat to reduce the bulk of the dust collecting bag. However, even in this conventional technique, the amount of dust to be sucked is determined by the capacity of the dust bag, and the dust in the dust bag is thermally compressed, miniaturized, and disposed of. Therefore, the volume of the dust collecting chamber is the same as that of the conventional one, and does not contribute to downsizing of the vacuum cleaner.

Attempts have been made to reduce the size of the vacuum cleaner by compressing the dust by applying a compressive pressure to the front body in front of the dust collecting bag, but a hole is formed in the suction port of the dust collecting bag. Since the pressure easily escapes, there is a problem that dust is concentrated at the suction port and reaches the limit without using the entire dust collection chamber capacity. Furthermore, if an opening / closing mechanism that closes the suction port during compression is provided to avoid pressure concentration on the suction port,
There is a problem that it is difficult to remove the dust collecting bag from the main body when the dust collecting bag is discarded, because the opening / closing mechanism is overhanging inside the dust collecting chamber.

In view of the above, the present invention aims to increase the amount of dust that can be stored in the dust collecting bag, and even if the volume of the dust collecting bag is reduced, the same amount of dust collecting can be obtained as before, and the vacuum cleaner body It is an object of the present invention to provide an electric vacuum cleaner that can be downsized.

[0007]

An electric vacuum cleaner according to claim 1 is provided with a cleaner main body, a negative pressure generating portion including an electric blower provided in the cleaner main body, and the vacuum cleaner main body. An electric vacuum cleaner comprising a dust collecting part having a dust bag inside and a suction port for connecting a suction hose provided to the cleaner body, wherein the suction hose is connected to the cleaner body. In order to do so, a cylindrical hose connection portion that is inserted and connected to the suction port is provided at one end of the suction hose, and the dust in the dust collection bag is pushed inside the hose connection portion by being pushed into the dust collection bag. A compression pipe for compression is provided slidably.

The vacuum cleaner according to claim 2 is provided with an urging body that constantly urges the compression pipe in a direction of moving the compression pipe to the outside of the dust bag, and the suction hose is connected to the compression pipe. The suction hose is provided with a stopper that regulates the movement amount of the compression pipe into the dust bag.

The vacuum cleaner according to a third aspect of the present invention is a vacuum cleaner main body, a negative pressure generating portion including an electric blower provided in the vacuum cleaner main body, and dust collected inside the vacuum cleaner main body. To connect the dust collecting part in which the bag is housed, the holding part that holds the dust collecting bag when the dust collecting bag is housed in the dust collecting part, and the suction hose provided in the cleaner body In the electric vacuum cleaner, the holding part is provided so as to be movable in the direction of compressing the dust collecting bag, and a pressing means for pressing the holding part is provided, and the dust collecting bag holding part is always in the compression direction. A biasing means for biasing in the opposite direction is provided.

Further, in the electric vacuum cleaner according to claim 4, the pressing means is formed by a cylindrical compression pipe, the compression pipe is provided in the suction hose, and the compression pipe is compressed by the dust in the dust bag. An opening / closing valve for closing the suction hose is sometimes provided.

Further, in the electric vacuum cleaner according to the present invention, the on-off valve is kept closed when the negative pressure generating section is stopped,
There is provided a valve holding means for releasing the holding of the closed state so as to be in the openable state when the negative pressure generating section is in operation.

[0012]

According to the electric vacuum cleaner of the first aspect, by inserting the compression pipe into the dust collecting bag, the dust inside the dust collecting bag is compressed from the front by the compression pipe, and the dust can be collected inside the dust collecting bag. Increase the volume.

According to the electric vacuum cleaner of claim 2,
After the compression is completed, the compression pipe is moved to the outside of the dust collecting bag by the urging means, so that the volume capable of collecting dust in the dust collecting bag increases.

According to the electric vacuum cleaner of the third aspect, the dust bag is compressed from the outside by moving the dust bag holding portion in the dust compression direction. After the compression is completed, the dust collecting bag holding portion is moved in the compression releasing direction by the biasing means, so that the dust collecting bag spreads over the entire dust collecting chamber.

Further, according to the electric vacuum cleaner of claim 4, when the dust is compressed, the on-off valve is moved in the pipe direction by the compression pressure to close the suction port and prevent the reverse flow of dust from the suction port to the hose. To do. After the compression is completed, the opening / closing valve is moved in the direction in which it is extended into the dust bag by the biasing means and the suction port is opened, so that the dust can be collected.

Further, according to the electric vacuum cleaner of the fourth aspect, when the dust is compressed, the holding means holds the inlet opening / closing valve in the closed state, and when the operation of the electric motor is resumed, the closed holding state in the holding means is maintained. The release valve is released, and the opening / closing valve is moved by the biasing means in the direction in which it is extended into the dust collecting bag, the suction port is opened, and dust collection is possible.

[0017]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a side view of essential parts showing the mechanism of the first embodiment of the electric vacuum cleaner according to the present invention. FIG. 1 shows a state where dust is not compressed, and FIG. 2 shows a state when compressed. FIG. 3 is a side view showing the dust shape before compression. FIG.
Indicates the state at the time of compression. FIG. 5 is a characteristic diagram showing changes in air volume with respect to the amount of dust collected with and without the compression mechanism. The volume of the dust bag is 1.5 l (liter), and the amount of compression pipe inserted into the dust bag. (Stroke) is 50 mm, the diameter of the compression pipe is 30φ, and the measurement results are shown using household waste reconstructed by loosening the dust collected at home.

Reference numeral 1 denotes a suction hose connection portion, which is also an outer portion of the double suction hose. A suction pipe fixing pin 2 for fixing the hose connection part 1 to the main body of the vacuum cleaner is incorporated, and further, inside the hose connection part 1, a compression pipe 3 and the compression pipe 3 are constantly urged in a compression releasing direction. A compression release spring 6 which is an urging body is incorporated. A suction hose (not shown) is connected to the compression pipe 3, and a grip 4 held by the user during the compression operation and a stopper 5 for preventing overcompression are also integrated. The dust-collecting bag 7 with the mouthpiece 10 is in contact with the packing 9 and is detachably attached to the main body by the holder 8.

Next, the operation of the electric vacuum cleaner according to this embodiment will be described. When the electric blower is stopped, the user grips 4
2 is moved to the dust bag side, the compression pipe 3 is inserted into the dust bag 7 as shown in FIG. The compression pipe 3 has a stopper 5
Is installed, the amount of movement becomes excessive and the dust bag 7
Will not be damaged. FIG. 3 shows how dust is compressed. Since the dust 11 includes fibers and the like and is gathered together, the movement of the compression pipe 3 receives a force in an annular shape, and the dust 11 is compressed as shown in FIG. As can be seen from the state of compression in FIG. 3, when the amount of collected dust is small,
Since the compression pipe 3 does not reach the dust 11, there is no air volume recovery by compression, but when the amount of dust collection is large, the volume of dust that can be collected in the dust collection bag 7 expands, so the degree of air volume recovery increases. Therefore, the change in the air flow rate depending on the dust collection amount with and without the compression mechanism is the curve shown in FIG. When the grip 4 is released after the compression, the compression is automatically released by the compression release spring 6.

The power source for the compression and decompression operations is
It is of course possible to use an electric motor or the like instead of the manual method as in the present embodiment.

A second embodiment of the vacuum cleaner according to the present invention will be described. FIG. 6 shows a second embodiment of the vacuum cleaner according to the present invention.
FIG. 6 is a side view of the main parts showing the mechanism of the embodiment of FIG. 6 shows a state where dust is not compressed, and FIG. 7 shows a state when compressed. The dust bag holding portion 14 is connected to the grip 12 that also serves as the compression pipe of the first embodiment, and the lower end of the dust bag holding portion 14 is a locking projection 14 that locks the lower end of the mouthpiece 10.
a is provided, and an engaging claw 14b that engages and holds the upper end of the mouthpiece 10 is rotatably supported by a rotating shaft 14c at the upper end. The dust bag holder 14 is interlocked with the grip 12 and is movable in the front-rear direction with respect to the cleaner body. A compression releasing spring 13 biased in the compression releasing direction is incorporated therein.

Next, the operation of the electric vacuum cleaner according to this embodiment will be described. When the user moves the grip 12 to the dust bag side while the vacuum cleaner is stopped, the grip 12 holds the dust bag holding portion 1
Since it is interlocked with 4, the dust bag holder 14 as shown in FIG.
Moves in a direction in which the dust bag 7 is compressed. Since the grip 12 is provided with the stopper, the amount of movement is not excessive and the dust bag 7 is not damaged. Since the mouthpiece 10 attached to the dust collecting bag 7 is made of a hard material such as cardboard, the mouthpiece 10 moves without changing its original shape.

Then, dust (not shown) is compressed from the outside of the dust collecting bag 7 using the paper sheet 10 as a compression plate. After the compression, when the hand is released from the grip 12, the compression is automatically released by the compression release spring 13, and the dust collecting bag 7 spreads over the entire dust collecting chamber again.

The power source for the compression and decompression operations is
It is of course possible to use an electric motor or the like instead of the manual method as in the present embodiment.

The suction port opening / closing mechanism of this embodiment will be described with reference to FIG. FIG. 8 is a side view showing the opening / closing mechanism of the suction port. FIG. 8 is an enlarged view, and at the same time, shows the path of dust during operation of the electric blower. FIG. 9 shows a state where dust is not compressed, and FIG. 10 shows a state when compressed. The suction port opening / closing valve case 15 is interlocked with the grip 12 and the dust bag holding portion 14, and is movable in the front-rear direction with respect to the cleaner body. Inside the inlet opening / closing valve case 15, the opening / closing valve returning spring 1 is urged in a direction to extend to the inside of the inlet opening / closing valve 16 and the dust collecting bag 7.
8 is incorporated. The opening / closing valve 16 has an outlet 17 formed therein. Next, the operation of the suction port opening / closing mechanism will be described. Since the suction port opening / closing valve 16 allows dust to pass through only from the air outlet 17, the flow of dust during operation of the electric blower is as shown by the arrow in FIG. In the non-compressed state, as shown in FIG. 9, since the air outlet 17 extends into the dust collecting chamber, the dust can pass and can be collected. When the user moves the grip 12 to the dust bag side while the electric blower is stopped,
Since the grip 12 is interlocked with the dust bag holder 14,
As shown in FIG. 10, the dust bag holder 14 moves in the dust compression direction. Then, the on-off valve 16 moves in the direction of being expelled from the dust bag by the dust.

As a result, the outlet 17 moves to the outside of the dust bag 7, the on-off valve 16 is closed, and dust cannot pass through. Therefore, the dust is prevented from flowing back from the suction port of the dust bag. prevent. Further, since the dust is not concentrated on the suction port of the dust collecting bag 7, the pressure on the compression surface becomes uniform and the compression effect is increased as compared with the case where there is no on-off valve. When the grip 12 is released after the compression, the pressure applied to the open / close valve 16 from the dust is released, and the open / close valve returning spring 18 automatically opens the open / close valve 16 to enable dust collection again. .

The on-off valve locking mechanism (on-off valve) which is the valve holding means of this embodiment will be described with reference to FIG. FIG. 11 is a side view showing a lock mechanism of the opening / closing mechanism of the suction port. FIG.
1 shows a state in which dust is not compressed, FIGS. 12 and 13 show a state at the time of compression, and FIG. 14 shows a state of unlocking after the end of compression. Here, a new locking mechanism is provided in the suction port opening / closing valve case 15, and the locking mechanism is composed of an opening / closing valve stopper 19, a stopper lock spring 20, and a stopper operation lever 21 which is interlocked with the opening / closing valve stopper 19. ing. Further, the stopper operation lever 21 is operated by the cam 23 driven by the electric motor 22.

Next, the operation of the on-off valve locking mechanism will be described. In a state where the dust is not compressed, as shown in FIG. 11, since the air outlet 17 extends into the dust bag, the dust can pass through and can be collected. When the user moves the grip 12 to the dust collecting bag side while the electric blower is stopped, the suction port opening / closing valve 16 moves in the direction of being expelled from the dust collecting bag by the dust. Then, as shown in FIG. 12, the on-off valve stopper 1
9 is pushed upward against the stopper lock spring 20. Then, when it reaches the movable limit point, the on-off valve stopper moves downward by the force of the stopper lock spring 20 and fixes the on-off valve 16 in the closed state (FIG. 13). After the compression, even if the grip 12 is released, the state of being fixed by the stopper 19 is maintained.

Next, when the operation of the electric blower is started next time, the control unit (not shown) drives the electric motor 22 to rotate the cam 23 and pushes the stopper operation lever 21 upward. Since the stopper operation lever 21 and the on-off valve stopper 19 are interlocked, the on-off valve stopper 19 also moves upward.

Then, the lock for the inlet opening / closing valve 16 is released, so that the inlet opening / closing valve 16 returns to the open state as shown in FIG. 14 by the action of the opening / closing valve returning spring 18. Control unit (not shown) when stopping the electric blower
Drives the electric motor 22 to rotate the cam 23 to return the on-off valve locking mechanism to the initial state, that is, the state shown in FIG.

Of course, the lock releasing means (valve holding means) may be manually operated without using an electric motor.

[0032]

According to the electric vacuum cleaner of the first aspect of the present invention, since the pipe is inserted from the suction port of the dust collecting bag to compress the dust while the electric blower is stopped, the capacity of the dust collecting bag can be reduced. Also, it is possible to secure the same amount of dust collection as before, which can contribute to downsizing of the vacuum cleaner. Alternatively, it is possible to increase the amount of dust collected with the same dust bag as the conventional one.

Further, according to the electric vacuum cleaner of the second aspect, since the compression pipe is moved to the outside of the dust collecting bag by the urging means after completion of the compression, the dust collecting volume in the dust collecting bag is further increased. Can be made.

Further, according to the electric vacuum cleaner of the third aspect, the dust collecting bag holding portion is moved while the electric blower is stopped to compress the dust collecting bag from the outside by using the mouthpiece of the dust collecting bag as a compression plate. Therefore, even if the capacity of the dust collecting bag is reduced, it is possible to secure the same dust collecting amount as the conventional one, which can contribute to downsizing of the vacuum cleaner. Alternatively, it is possible to increase the amount of dust collected with the same dust bag as the conventional one.

Further, according to the electric vacuum cleaner of the third aspect, since the suction port of the dust collecting bag is closed when the dust is compressed, the dust is prevented from flowing backward toward the pipe. Furthermore, since the compression pressure is uniform at all points on the compression surface, the dust compression effect is increased.

Further, according to the vacuum cleaner of the fourth aspect, when the suction port of the dust collecting bag is closed when the dust is compressed, the suction port opening / closing valve is locked, so that the suction port of the dust collecting bag is maintained until the next operation. Is closed and the inlet opening / closing valve does not extend inside the dust bag, so when the user discards the dust bag,
The dust collecting bag can be discarded as easily as before without the on-off valve interfering. In addition, since the on-off valve will be opened automatically at the next operation, it will not interfere with dust collection.

[Brief description of drawings]

FIG. 1 is a side view of essential parts showing a mechanism of a first embodiment of an electric vacuum cleaner according to the present invention, showing a state in which dust is not compressed.

FIG. 2 is a side view of the essential parts showing the mechanism of the first embodiment of the electric vacuum cleaner according to the present invention, showing the state during compression.

FIG. 3 is a side view showing a change in dust shape due to compression of the first embodiment according to the present invention, and is a diagram showing a state before dust compression.

FIG. 4 is a side view showing a change in dust shape due to compression in the first embodiment according to the present invention, which is a diagram showing a state at the time of compression.

FIG. 5 is a characteristic diagram showing changes in the air flow rate with respect to the dust collection amount according to the first embodiment of the present invention with and without the compression mechanism.

FIG. 6 is a side view of the essential parts showing the mechanism of the second embodiment of the electric vacuum cleaner according to the present invention, showing the state in which dust is not compressed.

FIG. 7 is a side view of the essential parts showing the mechanism of the second embodiment of the electric vacuum cleaner according to the present invention, showing the state during compression.

FIG. 8 is a side view showing the opening / closing mechanism of the suction port according to the second embodiment of the present invention, is an enlarged view of the mechanism, and is a view showing the path of dust at the same time.

FIG. 9 is a side view showing the opening / closing mechanism of the suction port according to the second embodiment of the present invention, and is a view showing a state in which dust is not compressed.

FIG. 10 is a side view showing the opening / closing mechanism of the suction port according to the second embodiment of the present invention, and is a view showing a state at the time of compression.

FIG. 11 is a side view showing a lock of the opening / closing mechanism of the suction port according to the second embodiment of the present invention, showing a state in which dust is not compressed.

FIG. 12 is a side view showing a lock of the suction port opening / closing mechanism according to the second embodiment of the present invention, and is a view showing a state just before the lock mechanism is applied in a compressed state.

FIG. 13 is a side view showing a lock of the opening / closing mechanism of the suction port according to the second embodiment of the present invention, and is a view showing a state in which the lock mechanism is applied in a compressed state.

FIG. 14 is a side view showing a lock of the suction port opening / closing mechanism according to the second embodiment of the present invention, and is a view showing a state of unlocking after completion of compression.

[Explanation of symbols]

 1 Suction hose connection 2 Suction pipe fixing pin 3 Compression pipe 4 Grip 5 Stopper 6 Compression release spring 7 Dust bag 8 Dust bag fixed holder 9 Packing 10 Dust bag mouth paper 11 Dust 12 Grip 13 Compression release spring 14 Dust collection Bag holding part 15 Suction port opening / closing valve case 16 Suction port opening / closing valve 17 Outlet port 18 Opening / closing valve return spring 19 Opening / closing valve stopper 20 Stopper lock spring 21 Stopper operating lever 22 Electric motor 23 Cam

Claims (5)

[Claims] 1. A vacuum cleaner main body, a negative pressure generating unit including an electric blower provided in the vacuum cleaner main body, and a dust collecting unit in which a dust collecting bag is housed inside the vacuum cleaner main body. An electric vacuum cleaner having a suction port for connecting a suction hose provided in the cleaner body, wherein the vacuum cleaner has a cylindrical shape inserted and connected to the suction port for connecting the suction hose to the cleaner body. A hose connecting portion is provided at one end of the suction hose, and a compression pipe for compressing the dust in the dust collecting bag that is pressed and moved into the dust collecting bag is slidably provided inside the hose connecting portion. And vacuum cleaner. 2. An urging body that constantly urges the compression pipe in a direction in which the compression pipe is moved to the outside of the dust bag, the suction hose is connected to the compression pipe, and the compression hose is connected to the suction hose. The electric vacuum cleaner according to claim 1, further comprising a stopper that restricts a movement amount into the dust collecting bag. 3. A vacuum cleaner main body, a negative pressure generating part formed of an electric blower provided in the vacuum cleaner main body, and a dust collecting part in which a dust collecting bag is housed inside the vacuum cleaner main body. An electric device comprising a dust bag holding portion for holding the dust bag when storing the dust bag in the dust collecting portion, and a suction port for connecting a suction hose provided in the cleaner body. In the vacuum cleaner, the dust bag holding portion is provided so as to be movable in the direction in which the dust bag is compressed, and the pressing means is provided to press the holding bag. The dust bag holding portion is always in the opposite direction to the compression direction. An electric vacuum cleaner characterized in that a biasing means for biasing the vacuum cleaner is provided. 4. The opening / closing valve, wherein the pressing means is formed by a cylindrical compression pipe, the compression pipe is provided in the suction hose, and the compression hose closes the suction hose when dust is compressed in the dust collecting bag. The vacuum cleaner according to claim 3, further comprising: 5. A valve holding means is provided for holding the on-off valve in a closed state when the negative pressure generating section is stopped, and for releasing the held state when the negative pressure generating section is in operation to open the valve. The vacuum cleaner according to claim 4, wherein the vacuum cleaner is a vacuum cleaner.