JPH08514A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To increase dust quantity capable of being contained in a dust collection bag by expanding the dust collection bag when an electric blower is operated, by using a dust collection bag compression plate which expands the dust collection bag from the outside when the electric blower is operated and compressing the dust collection bag from the outside when the electric blower is stopped. CONSTITUTION:When a power switch is turned off after a cleaner is used, a control part stops the electric blower 10, and also, rotates a motor 24 for dust collection bag compression operation, and transmits a force to a rack 27 via gears 25, 26, and moves an interlocking dust collection bag compression plate 8 in the direction of dust collection bag, which compresses the dust collection bag 7. While, when the power switch of this vacuum cleaner is turned on, the control part operates the electric blower 10, and simultaneously, rotates the motor 24 for dust collection bag compression plate operation, and transmits the force to the rack 27 via the gears 25, 26, and releases the compression of the dust collection bag 7 by moving an interlocking dust collection bag compression plate 8 in the direction of electric blower. A compression release operation is completed by disengaging the rack 27 from the gear 26 just before the compression plate 8 comes in contact with a partition 3.

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-shrinkable 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 it 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 in that the dust bag becomes bulky and cannot be easily taken out from the dust collection chamber.

Therefore, the above-mentioned conventional technique (Japanese Patent Laid-Open No. 5-1
As shown in 46384), the dust collecting bag after the dust collection is compressed by heat to reduce the bulk of the dust collecting bag. However, even with 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 applying pressure to the outside of the dust collecting bag to compress the dust, but if the dust is discarded while the dust collecting bag is compressed,
There is a problem that the dust bag must be taken out against the compressing force. Furthermore, with a compression mechanism using a spring, when the dust bag approaches the full capacity, the dust bag does not completely fill the volume of the dust collection chamber, but the dust blocks the area near the suction port and collects it. There is a problem that the limit is reached without using the entire dust chamber capacity. further,
In the case of the above-mentioned compression mechanism, there is an inconvenience that it is difficult to understand the limit of the dust absorption amount.

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]

According to the first aspect of the present invention,
Negative pressure generating part composed of electric blower, dust collecting part having a dust collecting bag housed therein, dust collecting bag compression plate for compressing the dust collecting bag from the outside, and dust collecting bag compression plate collecting dust A drive means for moving the bag in the compression and decompression directions and a transmission means for transmitting the rotational power of the drive means to the dust collecting bag compression plate are provided, and the drive means stops the electric blower. And at the same time to move the dust bag compression plate in the compression direction of the dust bag, and at the same time as the operation of the electric blower starts, the dust bag compression plate compresses the dust bag. An electric vacuum cleaner characterized by being moved in a releasing direction.

According to a second aspect of the present invention, in the first aspect, the drive means is stopped when the control section for detecting the current of the drive section provided in the vacuum cleaner body detects the overcurrent. It is an electric vacuum cleaner.

According to a third aspect of the present invention, a negative pressure generating section composed of an electric blower, a dust collecting section in which a dust collecting bag is housed, and a dust collecting bag compression plate for pressing the dust collecting bag from the outside are provided. A biasing means for constantly biasing the dust collecting bag compression plate in the compression direction of the dust collecting bag, and the dust collecting bag compression plate in the compression releasing direction of the dust collecting bag against the biasing means. Drive means for moving, transmission means for transmitting the rotational power of the driving means to the dust bag compression plate, and regulating means for regulating the movement of the dust bag compression plate in the decompression direction of the dust bag, Release means for releasing the restricting means, wherein the drive portion is stopped at substantially the same time as the electric blower is stopped, and the restricting means is released by the releasing means, and the biasing means is provided. The dust collecting bag compression plate moves in the compression direction of the dust collecting bag by It is a machine.

According to a fourth aspect of the present invention, a negative pressure generating portion including an electric blower, a dust collecting portion having a dust collecting bag housed therein, and a dust collecting bag compression plate for compressing the dust collecting bag from the outside. A driving means for moving the dust collecting bag compression plate, a pressure sensor for detecting a compression pressure applied to the dust collecting bag, and a compression releasing means for releasing the compression operation in response to a signal from the pressure sensor. The drive means is an urging means that constantly urges the dust bag compression plate in a direction of compressing the dust bag, and the dust bag compression plate is negative when the electric blower is operating. The vacuum cleaner is characterized in that it moves in a compression releasing direction of the dust bag against the biasing means by pressure.

According to a fifth aspect of the present invention, in the fourth aspect, the compression operation is released by the compression releasing means when the pressure sensor detects a compression pressure applied to the dust collecting bag that is equal to or more than a predetermined value. It is an electric vacuum cleaner.

According to the invention of claim 6, in claim 4,
When the pressure sensor detects a compression pressure for the dust bag having a predetermined value or more, the compression releasing means releases the compression operation so as to maintain the compression pressure at the predetermined value. is there.

According to a seventh aspect of the present invention, there is provided the electric cleaning system according to the fourth aspect, further comprising display means for displaying a disposal time of the dust collecting bag in response to a signal from the pressure sensor. It is a machine.

According to an eighth aspect of the present invention, in the first, third or fourth aspect, the driving force for moving the dust collecting bag compression plate by the rotation power generated by opening and closing the lid of the dust collecting portion, and the rotation power are provided. An electric vacuum cleaner, comprising: a transmission means for transmitting to a drive means.

[0015]

According to the first aspect of the present invention, the dust collecting bag compression plate is moved by the driving means to expand the dust collecting bag when the electric blower is operating, and the dust collecting bag is externally supplied when the electric blower is stopped. Compress. That is, since the dust collecting bag compression plate is moved in the compression releasing direction of the dust collecting bag by the driving means, the dust collecting bag spreads over the entire dust collecting chamber.

According to the second aspect of the present invention, since the compression of the dust collecting bag is stopped when the overcurrent flows to the driving means for moving the dust collecting bag compression plate, the excessive compression of the dust collecting bag is avoided. It

According to the third aspect of the invention, the biasing means moves the dust bag compression plate in the compression direction of the dust bag by releasing the regulating means for regulating the moving direction of the dust bag compression plate. The dust in the dust bag is pressurized.

According to the fourth aspect of the invention, when the electric vacuum cleaner is not used, the dust collecting bag compression plate presses the dust collecting bag from the outside by the driving means to compress the dust collected inside. To do.

According to the fifth aspect of the invention, when the pressure sensor detects that the compression pressure during operation has reached a certain value or more, the decompression means operates in response to the signal from the pressure sensor. As a result, the compression operation is released.

According to the sixth aspect of the invention, when the pressure sensor detects that the compression pressure during operation has reached a certain value or more, the decompression means operates in response to the signal from the pressure sensor. As a result, the compression operation is released so as to keep the compression pressure constant.

According to the seventh aspect of the invention, the pressure sensor detects the compression pressure applied to the dust collecting bag and displays the time when the dust collecting bag is discarded.

According to the invention described in claim 8, since the rotary power generated by opening and closing the lid of the dust collecting portion is interlocked with the driving means for moving the dust collecting bag compression plate through the transmitting means, When opened, the dust collecting bag compression plate that presses the dust collecting bag from the outside moves in the compression releasing direction.

[0023]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 is a plan view of the entire structure showing a first embodiment of the electric vacuum cleaner according to the present invention. Reference numeral 1 denotes an electric vacuum cleaner main body. Inside the electric vacuum cleaner main body 1, a dust collection chamber 4 opened upward by a partition wall 3 having a grid-shaped communication port 2 is formed at the front part and the dust collection chamber 4 is formed. An electric blower chamber 5 is formed behind the chamber 4. Then, in the dust collecting chamber 4, a dust collecting bag 7 as a main dust collecting filter is detachably mounted by a holder 6 pivotally attached to the dust collecting chamber 4.

Further, in FIG. 1, as an example of a dust bag compression mechanism, a dust bag compression plate 8 having a slit cut in the dust collection chamber 4 is shown.
And a compression spring 9 is attached. On the other hand, an electric blower 10 is arranged in the electric blower chamber 5, and the electric blower 10 includes a fan (not shown), an electric motor 11 that rotationally drives the fan, and a fan cover 12 that covers the fan. There is. An intake port 13 is formed in the center of the fan cover 12, and an exhaust port (not shown) is formed in the frame of the electric motor 11.

The front and rear portions of the electric blower 10 are supported by support walls 14 and 15 formed in the electric blower chamber 5 via rubber supports 16 and 17, respectively. The front support wall 14 and the rubber support 16 are formed in an annular shape, whereby the air intake port 13 of the electric blower 10 is airtightly connected to the dust collection chamber 4 via the communication port 2. Further, an exhaust chamber 18 is formed in the electric vacuum cleaner body 1 behind the electric blower chamber 5, and an exhaust filter 19 is attached to the exhaust chamber 18. A lattice-shaped exhaust port 20 communicating with the exhaust port of the electric blower 10 via the exhaust filter 19 is formed on the outer rear surface of the electric vacuum cleaner body 1.

The lid (not shown) is a main body case 1.
The rear end of the dust collection chamber 4 is pivotally attached to the dust collection chamber 2 and covers the dust collection chamber 4 openably and closably from above. Further, in front of the main body 1, a main body intake port 21 for communicating the dust collection chamber 4 with the outside of the electric vacuum cleaner main body 1
A shutter 22 for opening and closing the shutter is slidably supported. A knob 23 is formed at the end of the shutter 22 so as to project upward.

Next, the operation of the vacuum cleaner according to this embodiment will be described. FIG. 2 is a side view of essential parts showing a dust bag compression mechanism of the first embodiment according to the present invention. When the user turns off the power switch after using the vacuum cleaner, the control unit (not shown) stops the electric blower 10 and rotates the dust bag compression plate operating electric motor 24 (corresponding to a driving unit) to rotate the gear. The force is transmitted to the rack 27 via 25 and 26 (corresponding to a transmission means), and the interlocking dust bag compression plate 8 moves in the dust bag direction and compresses the dust bag 7. The compression operation is stopped after a preset time has elapsed. Since the gear 25 is a worm gear, even if the electric motor 24 is stopped, the dust bag compression plate 8 does not return.

On the other hand, when the power switch of the electric vacuum cleaner is turned on, the control unit (not shown) operates the electric blower 10 and at the same time rotates the electric motor 24 for operating the dust collecting bag compression plate, and through the gears 25 and 26. The force is transmitted to the rack 27, and the interlocking dust collecting bag compression plate 8 moves toward the electric blower to release the compression of the dust collecting bag 7. The decompression operation ends when the rack 27 is disengaged from the discontinuous gear 26 immediately before the compression plate 8 and the partition wall 3 come into contact with each other. The control unit stops the electric motor 24 after a preset time has elapsed.

Next, the decompression mechanism of this embodiment will be described with reference to FIGS. 2 and 3. FIG. 3 is a diagram showing the relationship between the value of current flowing through the electric motor for operating the dust collecting plate compression plate and time. In FIG. 2, when the dust bag compression plate 8 compresses the dust bag 7 by the rotation of the dust bag compression plate operation motor 24, a control unit (not shown) causes the dust bag compression plate operation motor 24 to operate. Detecting this current, when the current value exceeds a constant value a as shown in FIG. 3, it is determined that the compression is sufficient, and the supply of power to the dust bag compression plate operating motor 24 is stopped, The compression operation is released.

A second embodiment of the vacuum cleaner according to the present invention will be described with reference to FIG. 4 (a) and 4 (b) are a side view and a plan view of a main part of the decompression mechanism of the dust collecting bag. At the same time when the power switch of the electric vacuum cleaner is turned on, the dust collecting bag compression plate operating electric motor 38 (corresponding to the driving means) is activated, and the dust collecting bag compression plate operating electric motor 38 operates the gear 28 (corresponding to the transmitting means) to the timepiece. Rotate around. Due to the rotation of the gear 28, the gear 29 (corresponding to the transmitting means) is pulled downward along the slit 36 provided in the gear box 34 while resisting the force of the tension spring 33, and the force is applied to the rack 30 (corresponding to the transmitting means). Is transmitted, the dust collecting bag compression plate 8 moves toward the electric blower, and the compression of the dust collecting bag is released. The rack 30 is interrupted immediately before the dust bag compression plate 8 and the partition wall 3 come into contact with each other, and the decompression operation is stopped. The latch 31 (corresponding to the regulation means) is pressed to the rack side by the spring 37, and the dust bag compression plate 8 does not move even if the rack is interrupted.

FIG. 4C is a side view of the essential parts showing the compression mechanism of the dust collecting bag. At the same time when the power switch of the vacuum cleaner is turned off, the dust bag compression plate operating motor 38 stops. And
Since the tension spring 33 is set to be stronger than the spring 37, the gear 29 is pulled upward along the slit 36, whereby the lever 32 (corresponding to the releasing means) rotates clockwise, and the latch 31 moves from the rack 30. Off, Figure 4 (a)
The force accumulated in the dust bag compression spring 35 is released by the dust bag compression releasing operation in (b), and the dust bag compression plate 8 is released.
Moves toward the dust bag and compresses the dust bag.

A third embodiment of the vacuum cleaner according to the present invention will be described. FIG. 5 (a) is a side view of an essential part showing an embodiment of the electric vacuum cleaner according to the present invention, and FIG. 5 (b) is FIG.
It is a principal part top view of the decompression means of the electric vacuum cleaner shown to (a), and FIG.5 (c) is a principal part side view of the decompression means shown to FIG.5 (b). As shown in FIG. 5 (a), when the electric vacuum cleaner is stopped, the compression force of the spring 9 (corresponding to the driving means) pulls the dust bag compression plate 8 toward the dust bag side to compress the dust bag. On the other hand, when the electric vacuum cleaner is in operation, the electric blower 10
Due to the negative pressure generated by the dust collecting bag 7, the dust collecting bag 7 expands, and the dust collecting bag compression plate 8 is drawn toward the electric blower. As a result, the compression operation can be canceled.

Since the output of the pressure sensor 44 increases as the dust density in the dust bag increases, the control unit (not shown) shows the signal from the pressure sensor 44 during the cleaner operation as shown in FIG. When the predetermined compression pressure value c is exceeded, the latch release electric motor 47 is operated. The cam 48 is rotated by the drive of the latch release electric motor 47, and the latch release lever 49 is opposed to the force of the spring 46 as shown in FIG. 5C.
Goes up, and the latch 45 is disengaged from the pin 50 (corresponding to the compression releasing means). Therefore, the spring support portion 51 is moved to the electric blower side by the pulling force of the spring 9, and the force applied by the spring 9 to the dust bag compression plate 8 is released. This prevents the dust from being concentrated near the suction port (not shown) due to the spring 9 being too strong and the dust bag 7 not inflating to fill the volume of the dust collection chamber, thereby reducing the suction air volume. be able to.

Even when the motor for operating the dust collecting plate compression plate is used for compression after the power switch is turned off as in the second embodiment, the point at which the compression should be released is determined by the overcurrent of the motor. Alternatively, the compression signal can be released by making a decision by using the output signal of the compression sensor.

FIG. 7 is a side view of the essential parts of a fourth embodiment of the vacuum cleaner according to the present invention, in which a compression releasing means other than the compression releasing means shown in FIG. 5 is used. That is, it is an electric vacuum cleaner equipped with a mechanism for moving a spring support portion by a gear. When the input from the pressure sensor 52 to the control unit (not shown) exceeds a predetermined compression pressure value d as shown in FIG. 8, the control unit predetermines a decompression electric motor (not shown). Rotate a fixed number of revolutions. The rotation is transmitted through the gear 53 and the rack 54, and the spring support portion 55 is moved by a predetermined distance necessary for the compression pressure to fall below the predetermined value d shown in FIG. Reduce power.

In this embodiment, since the compression is released little by little in several times, the optimum compression effect can always be obtained. Further, it is possible to prevent the dust from being concentrated near the suction port (not shown) and the suction air volume being reduced before the dust bag 7 is inflated to the full capacity of the dust collection chamber due to excessive compression by the spring. You can

Even when the electric power for operating the dust collecting bag compression plate is used for compression after the power switch is turned off as in the second embodiment, it is optimal by utilizing the output signal of the pressure sensor. The compression plate operation electric motor can be stopped by the compression pressure.

FIG. 9 is a side view of essential parts showing a fifth embodiment of the vacuum cleaner according to the present invention. Since the pressure sensor 56 is attached to the front of the cleaner, if there is room in the dust bag when the compression is released, as shown in FIG. 11, the compression pressure that decreases with time immediately after the start of cleaning is detected. If this decrease width exceeds a predetermined value e, a control unit (not shown)
Determines that the dust bag 7 has room for collecting dust. When the pressure drop immediately after the start of operation is smaller than the predetermined value e as shown in FIG. 12, the control unit determines that there is no room for collecting dust in the dust collecting bag 7 and uses the dust collecting bag disposal time. A display signal is sent to a display means (not shown) for notifying the user to prompt the user to replace the dust collecting bag.

Finally, a sixth embodiment of the vacuum cleaner according to the present invention will be described. FIG. 12A is a side view of a main part of the dust collecting part, and FIG. 12B is a side view of the main part showing a decompression means of the dust collecting bag by opening and closing the lid of the cleaner. Figure 12 (a)
In the above, the dust collecting bag compression plate 8 compresses the dust collecting bag 7 by means of, for example, a spring (not shown) while the operation is stopped. When the lid 39 of the vacuum cleaner is opened, the gear 40 fixed to the lid rotates clockwise as shown in FIG.
After passing through the rack 42 (corresponding to transmitting means), the claws 43 (corresponding to driving means) connected to the rack 42 are connected to the dust bag compression plate 8.
And pull it toward the electric blower. In this way, when the lid of the vacuum cleaner is opened by the user's hand, the compression of the dust collecting bag is released, and it becomes easy to dispose of the dust collecting bag. When the lid is closed again, the gears 40 and 41 and the rack 42 rotate in the reverse direction,
In the state of 2 (a), the dust bag compression plate 8 performs the dust bag compression operation again.

[0040]

According to the first aspect of the invention, the dust collecting bag compression plate that is compressed from the outside of the dust collecting bag is used to expand the dust collecting bag when the electric blower is operating, and when the electric blower is stopped. Since the dust bag is compressed from the outside, it is possible to secure the same amount of dust collection as before even if the volume of the dust bag is halved, which contributes to downsizing of the cleaner body. Alternatively, it is possible to increase the amount of dust collected with the same dust bag as the conventional one. Also,
By using the driving means for moving the dust bag compression plate, the compression efficiency can be improved. Further, when the compression of the dust collecting bag is released, the compression of the dust collecting bag can be surely released by using the driving means, and the dust collecting bag does not expand to the full capacity of the dust collecting chamber during cleaning. Can be eliminated and the full capacity of the dust collection chamber can be effectively utilized.

According to the second aspect of the present invention, since the compression of the dust collecting bag is stopped when an overcurrent flows to the driving means for moving the dust collecting bag compression plate, the compression of the dust collecting bag is stopped. It is possible to prevent the main body of the vacuum cleaner from being damaged due to excessive compression and excessive compression.

According to the third aspect of the present invention, the dust collecting bag is pressed through the dust collecting bag compression plate by releasing the regulating means for regulating the moving direction of the dust collecting bag compression plate. Need only be linked to the vacuum cleaner's run switch. Therefore, complicated control is not required and the circuit can be simplified.

According to the fourth aspect of the present invention, while the electric vacuum cleaner is not used, the dust collecting bag compression plate presses the dust collecting bag from the outside by the driving means to compress the dust collected inside. Therefore, the amount of dust that can be collected can be increased.

According to the fifth aspect of the present invention, when the pressure sensor detects that the compression pressure during operation exceeds a certain value, the compression operation is canceled, so that the negative pressure of the biasing means and the blower is reduced. In the compression method utilizing, it is possible to prevent a decrease in the suction air volume that is caused by the dust collection bag not expanding due to the biasing means being too strong and dust being concentrated near the suction port.

According to the sixth aspect of the present invention, when the pressure sensor detects that the compression pressure during operation has exceeded a certain value, the compression pressure is kept constant, so the compression is divided into several times. Will be released little by little and the optimum compression effect can always be obtained. Further, in the compression method utilizing the negative pressure of the urging means and the blower, the dust collection bag is prevented from inflating due to the urging means being too strong, and the reduction of the suction air volume caused by the concentration of dust near the suction port is prevented, A small dust collection chamber capacity can be effectively utilized.

According to the seventh aspect of the present invention, the pressure sensor detects the compression pressure applied to the dust collecting bag to determine when the dust collecting bag should be discarded and displays the result on the display unit. It is possible to make it easy for the user to know when to dispose of the dust bag that is difficult to understand.

According to the eighth aspect of the invention, the lid is opened by interlocking the rotational power generated by opening and closing the lid of the dust collecting portion with the driving means for moving the dust collecting bag compression plate via the transmitting means. Sometimes the dust bag compression plate that presses the dust bag from the outside moves in the compression release direction, so when the user discards the dust bag, without worrying about the annoyance due to the built-in compression mechanism. The dust bag can be disposed of as easily as in the past.

[Brief description of drawings]

FIG. 1 is a plan view of the entire structure showing a first embodiment of an electric vacuum cleaner according to the present invention.

FIG. 2 is a side view of the essential parts showing the dust collecting bag compression mechanism of the first embodiment according to the present invention.

FIG. 3 is a diagram showing a relationship between a value of a current flowing through a motor for operating a dust collecting bag compression plate and time according to the first embodiment.

4A and 4B are views showing a second embodiment of the electric vacuum cleaner according to the present invention, FIG. 4A is a side view of a main part showing a decompression mechanism, FIG. 4B is its plan view, and FIG. 4C is a side view of a main part showing the compression mechanism. Fig.

FIG. 5 is a diagram showing a third embodiment of the electric vacuum cleaner according to the present invention, (a) a side view of a main portion showing a compression and decompression mechanism,
(B) The principal part top view which shows the decompression means, (c) The principal part side view which shows the time of operation of the decompression means.

FIG. 6 is a diagram showing the relationship between the compression pressure of the dust bag and time according to the third embodiment.

FIG. 7 is a side view of essential parts showing a fourth embodiment of the electric vacuum cleaner according to the present invention.

FIG. 8 is a diagram showing the relationship between the compression pressure of the dust bag and the time according to the fourth embodiment.

FIG. 9 is a side view of essential parts showing a fifth embodiment of the electric vacuum cleaner according to the present invention.

FIG. 10 is a diagram showing a relationship between the compression pressure of the dust collecting bag and time according to the fifth embodiment.

FIG. 11 is a diagram showing a relationship between the compression pressure of the dust collecting bag and time according to the fifth embodiment.

FIG. 12 is a diagram showing a sixth embodiment of the electric vacuum cleaner according to the present invention, (a) a diagram showing a state in which the lid of the dust collecting portion is closed, (b)
The figure which shows the state which the lid of the dust collection part opened.

[Explanation of symbols]

 1 Electric Vacuum Cleaner Main Body 7 Dust Collection Bag 8 Dust Collection Bag Compression Plate 10 Electric Blower 24 Dust Collection Bag Compression Plate Operation Electric Motor 25, 26 Gear 27 Rack 31 Latch 32 Lever 35 Dust Collection Bag Compression Spring 39 Lid 43 Claw 44 Pressure Sensor

Claims (8)

[Claims] 1. A negative pressure generating part comprising an electric blower, a dust collecting part having a dust collecting bag housed therein, a dust collecting bag compression plate for compressing the dust collecting bag from the outside, and the dust collecting bag. An electric vacuum cleaner comprising: driving means for moving a compression plate in a direction of compressing and decompressing the dust collecting bag; and transmission means for transmitting rotational power of the driving means to the dust collecting bag compression plate. Is operated almost at the same time as the stop of the electric blower to move the dust bag compression plate in the compression direction of the dust bag, and at the same time as the operation of the electric blower is started, the dust bag compression plate is operated. The vacuum cleaner is characterized in that the vacuum cleaner is moved in the direction of decompressing the dust bag. 2. The drive means is stopped when a control section for detecting a current of the drive means provided in the main body of the electric vacuum cleaner detects an overcurrent. Vacuum cleaner. 3. A negative pressure generating part comprising an electric blower, a dust collecting part having a dust collecting bag housed therein, a dust collecting bag compression plate for pressing the dust collecting bag from the outside, and the dust collecting bag. Urging means for constantly urging the compression plate in the compression direction of the dust bag, and drive means for moving the dust bag compression plate in the decompression direction of the dust bag against the urging means, Transmission means for transmitting the rotational power of the driving means to the dust bag compression plate, regulation means for regulating the movement of the dust bag compression plate in the compression releasing direction of the dust bag, and releasing the regulation means. An electric vacuum cleaner having a releasing means, wherein the driving means is stopped at substantially the same time as the electric blower is stopped, and the regulating means is released by the releasing means, and the dust collecting is performed by the urging means. An electric vacuum cleaner, wherein a bag compression plate moves in a compression direction of the dust collecting bag. 4. A negative pressure generating part comprising an electric blower, a dust collecting part having a dust collecting bag housed therein, a dust collecting bag compression plate for compressing the dust collecting bag from the outside, and the dust collecting bag. In a vacuum cleaner provided with a driving means for moving a compression plate, a pressure sensor for detecting a compression pressure on the dust bag, and a compression releasing means for releasing a compression operation in response to a signal from the pressure sensor, The drive means is a biasing means for constantly biasing the dust bag compression plate in a direction of compressing the dust bag, and the dust bag compression plate is biased by negative pressure during operation of the electric blower. An electric vacuum cleaner, characterized in that it moves in the direction of decompressing the dust bag against the means. 5. The vacuum cleaner according to claim 4, wherein the compression operation is released by the compression releasing means when the pressure sensor detects a compression pressure applied to the dust collecting bag that is equal to or more than a predetermined value. . 6. When the pressure sensor detects a compression pressure for the dust collecting bag that is equal to or higher than a predetermined value, the compression operation is released by the compression releasing means so as to maintain the compression pressure at the predetermined value. The electric vacuum cleaner according to claim 4. 7. The vacuum cleaner according to claim 4, further comprising display means for displaying a time when the dust bag is discarded in response to a signal from the pressure sensor. 8. A driving means for moving the dust collecting bag compression plate by rotational power generated by opening and closing the lid of the dust collecting portion, and a transmission means for transmitting the rotational power to the driving means. The vacuum cleaner according to claim 1, 3 or 4.