JP3476076B2 - Electric vacuum cleaner - Google Patents

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 having a cyclone type dust collecting portion that swirls intake air to separate dust.

[0002]

2. Description of the Related Art Conventionally, there has been proposed an electric vacuum cleaner having a cyclone dust collecting portion for separating dust by rotating intake air driven by an electric blower. FIG. 10 is a schematic view showing an example of such a conventional electric vacuum cleaner. The inlet pipe 4 having an intake port (not shown) facing the floor surface F has a connection pipe 3
Are connected. The cyclone dust collecting part 5 is connected to the connection pipe 3.

The cyclone dust collecting portion 5 communicates with the main body 1 of the electric vacuum cleaner having the electric blower 1a through the connecting member 10 and the suction hose 2 to form an intake passage. Further, a part of the connecting member 10 is bent to form a handle 10a that a user holds, and an operating portion 10g having operation keys for performing various operations and a display portion for displaying a driving situation is provided on the handle 10a. Has been.

Details of the cyclone dust collecting portion 5 are shown in a side sectional view of FIG. 11 and a top sectional view of FIG. The cyclone dust collecting portion 5 has an intake guide 20 having an inflow port 5a formed therein and is connected to the connection pipe 3 by the intake guide 20. The cyclone dust collecting portion 5 is formed in a substantially cylindrical shape and is arranged substantially parallel to the connection pipe 3.
Then, the intake air flows from the inflow port 5a toward the tangential direction of the inner wall 5c of the cyclone dust collecting portion 5. As a result, the intake air swirls while colliding with the inner wall 5c of the cyclone dust collecting portion 5, and centrifugal force separates the dust to separate the first dust.
The dust is collected in the dust collecting chamber 7.

The connecting pipe 10b communicating with the connecting member 10 is
From the center of the upper surface of the cyclone dust collecting portion 5 to the intake guide 20
It is installed upright. Reference numeral 20a denotes a cylindrical holding portion provided on the intake guide 20 so as to communicate with the connecting pipe 10b. The exhaust pipe 15 is detachably screwed to the holding portion 20a via the packing 6. Has become.

An exhaust port 5b made of a mesh having air permeability is provided on the side surface of the exhaust pipe 15. When the electric blower 1a is driven, intake air is taken in from an intake port (not shown) of the intake port body 4 as indicated by an arrow f1, and the intake air flows from the inflow port 5a to the cyclone dust collecting section 5 through the connection pipe 3. Inflow. After the intake air is swirled in the cyclone dust collecting portion 5 to separate and remove the dust, the intake air is reflected by the partition wall 9 and rises, and the exhaust pipe 5b, the connecting pipe 10b, and the suction hose 2 are lifted.
Via the electric blower 1a, the electric blower 1a discharges the electric vacuum cleaner main body 1 to the outside as indicated by an arrow f2.

A second dust collecting chamber 8 is provided coaxially with the first dust collecting chamber 7 via a partition wall 9. The partition wall 9 is the first dust collecting chamber 7
13 is integrally formed with the first dust collection chamber 7 by adhesion, welding, or the like, and has an opening 9a opened in the swirling direction of the air flow, as shown in the perspective view of FIG. Therefore, the first
Among the dust collected in the dust collection chamber 7, relatively large dust such as paper scraps passes through the opening 9 a of the partition wall 9 and is stored in the second dust collection chamber 8.

[0008]

The amount of dust accumulated in the cyclone dust collecting portion 5 is limited to the content integration of the first and second dust collecting chambers 7 and 8, but the first and second dust collecting chambers 7 and 8 are integrated. Dust collection chamber 7,
An unreasonable increase in the internal volume of 8 leads to an increase in the weight of the cyclone dust collecting portion 5 and reduces the operability of the electric vacuum cleaner. Therefore, in the above-described conventional configuration, a large amount of dust is collected in the cyclone dust collecting portion 5. There was a problem that it could not be stored inside.

Further, the dust flowing into the cyclone dust collecting portion 5 together with the intake air driven by the electric blower 1a also contains extremely minute dust, but since such minute dust is extremely light, the cyclone is very small. Centrifugal force due to the swirling air flow in the dust collecting portion 5 cannot sufficiently separate the air, and when the air is exhausted from the exhaust pipe 15, the air is sucked to the mesh of the exhaust port 5b and the mesh is clogged.

Therefore, it is essential to regularly clean the exhaust pipe 15, but when the exhaust pipe 15 is cleaned by removing the first and second dust collecting chambers 7 and 8 from the cyclone dust collecting portion 5, the exhaust port 5 is removed.
Not only was fine dust attached to b scattered and soiled the surroundings, and it adhered to hands and clothes, which was unsanitary, and required considerable time for manual cleaning.

The present invention has been made in view of the above conventional problems, and an object thereof is to provide an electric vacuum cleaner capable of accumulating more dust in a compact cyclone dust collecting portion. It is another object of the present invention to provide an electric vacuum cleaner that can perform maintenance-free cleaning of an exhaust port through which an airflow flowing into the cyclone dust collecting section is exhausted.

[0012]

To achieve the above object, the present invention provides a suction port body having an intake port, an electric blower for generating intake air, and a space provided between the suction port body and the electric blower. In an electric vacuum cleaner having an intake path and a cyclone type dust collecting section which is arranged in the intake path and swirls the inflowing air to separate dust, the inside of the cyclone type dust collecting section
A compression means for compressing the dust accumulated in the dust collecting chamber is provided , and the dust collecting chamber can be attached to and detached from the cyclone type dust collecting portion.
And wherein the such.

Further, according to the present invention, an intake port body having an intake port, an electric blower for generating intake air, an intake path provided between the intake port body and the electric blower, and an intake path provided in the intake path. in electric vacuum cleaner having a cyclone type dust collecting part that separates dust by swirling the intake air flowing is, the rhino
A partition with an opening or a gap in the Klon-type dust collection unit
The cyclone-type dust collection unit is provided with
The first dust collecting chamber for separating the separated dust and the first dust collecting chamber for storing the separated dust.
Separated from two dust collecting chambers and accumulated in the second dust collecting chamber
A compression means for compressing the dust is provided.

According to the above construction, the dust that has flowed into the cyclone type dust collecting section together with the intake air by the drive of the electric blower is separated while swirling and accumulated in the cyclone type dust collecting section. Then, this dust is compressed by moving the compression means to reduce the volume, and the empty volume of the cyclone type dust collecting portion increases.

The compression means is interlocked with the partition wall .
And push this partition down to the lower position of the second dust collecting chamber.
The operating part is located outside the cyclone type dust collecting part.

According to this structure, by operating the operation section arranged outside the cyclone type dust collecting section, the partition arranged in the cyclone type dust collecting section is moved to compress the dust accumulated in the cyclone type dust collecting section. Be reduced by volume.

Further, the compression means is provided above the cyclone type dust collecting portion and is urged downward to the working chamber which communicates with the intake passage via the cyclone type dust collecting portion. It is characterized by comprising a float, a connecting rod having one end fixed to the float, and a compression member attached to the other end of the connecting rod.

According to this structure, when the electric blower is driven, negative pressure is generated in the working chamber due to intake air, the float is sucked and rises against the bias, and the compression member is raised in conjunction with this. Then, when the electric blower is stopped, the float descends due to the urging, and in conjunction with this, the compression member descends, and the dust accumulated in the cyclone type dust collecting portion is compressed and the volume is reduced.

In this case, when the connecting rod is inserted into the exhaust pipe, it becomes easy to secure a space for vertically moving the connecting rod in the cyclone dust collecting portion.

Further, the present invention is characterized in that cleaning means is provided for cleaning the exhaust port of the exhaust stack that moves in association with the compression means. According to this, the cleaning means moves in association with the compression means by driving / stopping the electric blower, and the exhaust port of the exhaust stack is automatically cleaned. in this case,
The cleaning means may be connected to the float.

Further, according to the present invention, an intake port body having an intake port, an electric blower for generating intake air, an intake path provided between the intake port body and the electric blower, and an intake path provided in the intake path. In a vacuum cleaner provided with a cyclone type dust collecting portion that swirls inflowing inflowing air to separate dust, an exhaust pipe having an exhaust port formed to communicate the inside and outside of the cyclone type dust collecting portion, and the electric motor. Cleaning means for cleaning the exhaust port of the exhaust tube by driving or stopping the blower is provided.

According to this structure, the dust that has flowed into the cyclone type dust collecting section together with the intake air by the drive of the electric blower is separated while swirling and accumulated in the cyclone type dust collecting section. Then, the intake air that has flowed into the cyclone type dust collecting portion is exhausted from the exhaust pipe to the intake passage outside the cyclone type dust collecting portion. Further, the exhaust port of the exhaust stack is cleaned by the cleaning means.

The cleaning means is provided above the cyclone type dust collecting section and is urged to the working chamber which communicates with the intake passage through the cyclone type dust collecting section and below the working chamber. A float, a connecting arm extending in the cyclone dust collecting portion so as to maintain a predetermined distance from the float to the exhaust port of the exhaust pipe, and the connecting arm facing the exhaust port of the exhaust pipe. It is characterized by comprising an attached brush.

According to this structure, when the electric blower is driven, negative pressure is generated in the working chamber due to the intake air, the float is sucked and rises against the bias, and the cleaning means moves in conjunction with this. The exhaust port of the stack is cleaned. Then, when the electric blower is stopped, the float descends due to the urging, and in conjunction with this, the cleaning means descends to clean the exhaust port of the exhaust stack.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION <First Embodiment> A first embodiment of the present invention will be described with reference to the drawings. The present embodiment is characterized by the structure of the cyclone dust collecting portion, and is otherwise the same as the conventional electric vacuum cleaner shown in FIG. 11 , so the same members as those in FIG. Is attached and detailed description thereof is omitted.

FIG. 1 is a side sectional view of a cyclone dust collecting portion according to this embodiment. The cyclone dust collecting part 5 has an inlet 5a.
Has an intake guide 20 formed in the upper part, and is communicated with the connection pipe 3 forming an intake passage by the intake guide 20. The cyclone dust collecting portion 5 is formed in a substantially cylindrical shape and is arranged substantially parallel to the connection pipe 3.
Then, the intake air flow enters from the inflow port 5a substantially at right angles to the exhaust air flow from the cyclone dust collecting portion 5.

A connecting pipe 10b communicating with the connecting member 10 (see FIG. 10) is provided upright on the intake guide 20 from substantially the center of the upper surface of the cyclone dust collecting portion 5. 20a is a connecting pipe 1
0b is a cylindrical holding portion provided on the intake guide 20 so as to communicate therewith, and an exhaust pipe 15 to be described later is detachably screwed to the holding portion 20a.

The cyclone dust collecting unit 5 is connected to the connecting pipe 3.
By arranging the connection pipe 3 on the opposite side of the floor F (see FIG. 10), the connection pipe 3 can be used to clean the gap under the bed.
It is possible to prevent the cyclone dust collecting part 5 from colliding with the floor and being damaged when the connecting pipe 3 is dropped.

The exhaust pipe 15 is a holding portion 2 for the intake guide 20.
0a is fixed via a seal member 6. Therefore,
The cyclone type dust collecting portion 5 is connected to the connecting pipe 1 in a state where the inside and outside ventilation at the connecting portion of the exhaust pipe 15 is sealed by the seal member 6.
It is in communication with 0b. On the side surface of the exhaust pipe 15, an exhaust port 5b having a plurality of window-shaped openings covered with mesh is formed.

The first and second dust collecting chambers 7 and 8 are detachable from each other, and a lock mechanism 30 provided between the first and second dust collecting chambers receives pressure from the intake guide 20 side,
The first and second dust collecting chambers 7 and 8 are detachably fixed to the intake guide 20. Since the details of the lock mechanism 30 are not related to the essence of the present invention, the description thereof is omitted here.

An operation chamber 50 extending in the vertical direction is formed integrally with the first dust collecting chamber 7 at a position facing the connection pipe 3 on the outer peripheral portion of the first dust collecting chamber 7. A slit 50a is provided in the front so that the operating portion 51 projecting toward can slide between the upper and lower ends of the operating chamber 50.

Reference numeral 52 denotes an operating rod which is inserted into the operating chamber 50 so as to project toward the second dust collecting chamber 8, one end of which is fixed to the operating portion 51 and the other end of which is a disk-shaped partition wall 9. Is attached. The outer diameter of the partition wall 9 is selected to be smaller than the inner diameter of the second dust collecting chamber 8 so that a gap is formed between the partition 9 and the inner wall of the second dust collecting chamber 8. The inside of the operation chamber 50 is sealed from the dust collection chambers 7 and 8 by a seal member 53.

Then, a spring 54 through which the operating rod 52 is inserted
Thus, the operation section 51 is biased upward in the operation chamber 50. Therefore, when the operating portion 51 is pinched with a finger and pulled downward (direction A) along the slit 50a against the biasing force of the spring 54, the partition wall 9 moves downward (direction B) in conjunction with this.
When the hand is lowered from the operating portion 51, the restoring force of the spring 54 returns to the upper end of the slit 50a, and the partition 9 also returns to the initial position.

When the electric blower 1a (FIG. 9) is driven, the intake air flow along with dust from the inflow port 5a to the cyclone dust suction section 5
It flows into the inside and swirls in the first dust collecting chamber 7 to separate the dust. Part of the separated dust passes around the partition wall 9 and is accumulated in the second dust collecting chamber 8. The intake air flow from which the dust has been separated passes through the exhaust port 5b, passes through the exhaust pipe 15, and then the connecting pipe 10
It is guided to the outside of the cyclone dust collecting part 5 from b and is exhausted from the main body 1.

When dust is accumulated up to a high position in the second dust collecting chamber 8, the operating portion 51 is grasped and pushed down from the upper end to the lower end of the slit 50a of the operating chamber 50, and then the hand is released and returned to the upper end. As a result, the dust can be compressed to a lower position by the partition wall 9 to reduce the volume. If the dust is not sufficiently compressed in one operation, this operation may be repeated several times as necessary.

As a result, the empty volume in the second dust collecting chamber 8 increases, and more dust can be accumulated without throwing it away. Therefore, the number of times the dust in the second dust collecting chamber 8 is discarded can be reduced, and the second dust collecting chamber 8 itself can be downsized. For the dust collected in the first and second dust collecting chambers 7 and 8, the dust collecting chambers 7 and 8 should be pushed down integrally to release the lock mechanism 30, and the dust should be separated after being integrally removed. Thrown away at.

<Second Embodiment> A second embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a side sectional view of the cyclone dust collecting portion of the electric vacuum cleaner according to the present embodiment. The present embodiment is characterized by the structure of the cyclone dust collecting portion, and is otherwise the same as the conventional electric vacuum cleaner shown in FIG. 9, so the same reference numerals are used for the common members. Is attached and detailed description thereof is omitted.

In FIG. 2, reference numeral 55 is a working chamber which is arranged above the intake guide 20 and communicates with the intake passage via the cyclone dust collecting section 5. A cylindrical connecting pipe 10b is provided coaxially on the upper surface of the working chamber 55. And the connecting pipe 10
As shown in FIG. 3, the portion of b that hangs in the working chamber 55 has stoppers 10 having openings 10d that are arched out at a plurality of locations (three locations in FIG. 3) on the side surface of the cylinder.
It is c.

A float 56 is provided inside the working chamber 55 coaxially with the connecting pipe 10b and the holding portion 20a so as to have a gap with the inner wall of the working chamber 55.
6 is urged toward the holding portion 20a by a spring 57.
One end of the spring 57 is fixed to a rib 55a on the back side of the upper surface of the working chamber 55, and the other end is connected to the upper surface of the float 56.

As shown in FIG. 4, projections 56a are provided on the outer peripheral portion of the float 56 at a plurality of locations (three locations in FIG. 4) to allow the float 56 to slide along the inner wall of the working chamber 55. It plays a stabilizing role. Reference numeral 58 is a connecting rod having one end fixed to the center of the axis of the float 56,
After being inserted into the exhaust pipe 15, the partition wall 9 has a screw 61 at the other end.
It is installed in. Reference numeral 59 denotes a seal member arranged at the lower end of the exhaust pipe 15 and made of rubber or the like, and seals the inflow of intake air into the sliding portion of the connecting rod 58 inserted in the exhaust pipe 15.

As shown in FIG. 2A, the float 56 is pressed against the holding portion 20a side of the intake duct 20 by the bias of the spring 57. When the electric blower 1a is driven in this state, negative pressure is generated in the working chamber 55 due to intake air generated,
The float 56 is attracted to the connecting pipe 10b side as shown in FIG. 2B against the bias of the spring 57, and rises until it comes into contact with the stopper 10c. Thereby, the electric blower 1a, the suction hose 2, the working chamber 55, the cyclone dust collecting section 5,
The intake pipe communicates with the connection pipe 3 and the suction port body 4 in this order.

The intake air flows together with dust from the connection pipe 3 through the inflow port 5a into the cyclone dust collecting portion 5, where
The dust is separated while swirling in the dust collection chamber 7. Part of the separated dust passes around the partition wall 9 and is accumulated in the second dust collecting chamber 8. The intake air flow from which the dust has been separated passes through the exhaust port 5b of the exhaust pipe 15 through the exhaust pipe 15 through the gap around the float 56, reaches the electric blower 1a through the opening 10d, and is exhausted.

When the driving of the electric blower 1a is stopped, the negative pressure in the working chamber 55 is released, the float 56 and the partition wall 9 are lowered by the urging force of the spring 57, and the state as shown in FIG. Return to. At this time, the dust accumulated in the second dust collecting chamber 8 is compressed toward the bottom side by the lowering of the partition wall 9 to be reduced in volume. When the electric blower 1a is driven next time, the partition wall 9 rises again to absorb dust, and a part of dust is accumulated in the second dust collection chamber 8.

Thus, every time the electric blower 1a is driven / stopped, the dust in the second dust collecting chamber 8 is compressed, so
The empty volume in the dust collection chamber 8 increases, and more dust can be accumulated without throwing away the dust. Therefore, the second dust collecting chamber 8
You can reduce the number of times you throw away the dust inside,
The second dust collecting chamber 8 itself can be downsized. For the dust collected in the first and second dust collecting chambers 7 and 8, the dust collecting chambers 7 and 8 should be pushed down integrally to release the lock mechanism 30, and the dust should be separated after being integrally removed. Thrown away at.

<Third Embodiment> A third embodiment of the present invention will be described with reference to the drawings. FIG. 5 is a side sectional view of the cyclone dust collecting portion of the electric vacuum cleaner according to the present embodiment. 5, the same members as those of the electric vacuum cleaner according to the second embodiment shown in FIG. 2 are designated by the same reference numerals, and detailed description thereof will be omitted.

In FIG. 5, reference numeral 23 is a connecting arm fixed to the float 56. At the lower end of the connecting arm 23,
A ring-shaped cleaning tool 21 having a brush 22 for cleaning the exhaust port 5b on the side surface of the exhaust pipe 15 is provided inside. Guide holes 20b for guiding the vertical movement of the connecting arm 23 are provided at a plurality of positions outside the root of the holding portion 20a protruding from the upper surface of the intake guide 20 along the circumference. The guide holes 20b are partly blocked on the outer side by a ring-shaped seal member 59 made of rubber or the like.

The relationship between the float 56, the connecting arm 23 and the cleaning tool 21 is shown in the perspective view of FIG. The upper surface of the float 56 is provided with a groove portion 56b extending in the circumferential direction with a central angle of about 120 ° from the center of the axis. On the other hand, the connecting arm 2
The upper end of 3 is a branch portion 23a extending in the lateral direction with a central angle of about 120 ° from the center of the axis. Then, the connecting arm 23 is fixed to the float 56 by engaging the branch portion 23a with the groove portion 56b of the float 56.
As a result, the float 56 and the cleaning tool 21 can be integrally moved. Incidentally, 23b is a collar portion integrally formed at the lower end of the connecting arm 23 and having a larger outer diameter than the connecting arm 23.

As shown in FIG. 5 (a), the float 56 is pressed against the holding portion 20a side of the intake duct 20 by the bias of the spring 57. When the electric blower 1a is driven in this state, negative pressure is generated in the working chamber 55 due to intake air generated,
The float 56 is attracted toward the connecting pipe 10b side as shown in FIG. 5B against the bias of the spring 57, and rises until it comes into contact with the stopper 10c. Thereby, the electric blower 1a, the suction hose 2, the working chamber 55, the cyclone dust collecting section 5,
The intake pipe communicates with the connection pipe 3 and the suction port body 4 in this order.

At this time, the cleaning tool 21 and the partition wall 9 ascend together with the float 56. As a result, the brush 22 provided on the cleaning tool 21 causes the exhaust port 5b on the side surface of the exhaust pipe 15 to
The surface of the second dust collecting chamber 8 is rubbed to remove the attached dust, and the partition 9 is raised to increase the volume of the second dust collecting chamber 8.

When the cleaning tool 21 rises together with the float 56, the flange portion 23b of the connecting arm 23 is pressed against the seal member 59, so that the intake air is prevented from flowing into the working chamber 55 from the guide hole 20b of the intake guide 20. It Therefore, the intake flow passes through the exhaust port 15 without leaking to other parts,
The electric blower 1a is efficiently sucked.

The intake air flows together with dust from the connection pipe 3 through the inflow port 5a into the cyclone dust collecting section 5, where
The dust is separated while swirling in the dust collection chamber 7. Part of the separated dust passes around the partition wall 9 and is accumulated in the second dust collecting chamber 8. The intake air flow from which the dust has been separated passes through the exhaust port 5b of the exhaust pipe 15 through the exhaust pipe 15 through the gap around the float 56, reaches the electric blower 1a through the opening 10d, and is exhausted.

When the drive of the electric blower 1a is stopped, the negative pressure in the working chamber 55 is released and the float 56 is
The partition wall 9 and the cleaning tool 21 are lowered by the urging force of the spring 57 to return to the state shown in FIG. This allows
The brush 22 provided on the cleaning tool 21 rubs the surface of the exhaust port 5b on the side surface of the exhaust pipe 15 to remove the attached dust, and the dust accumulated in the second dust collecting chamber 8 is separated by a partition wall. The volume is compressed to the bottom side by the downward movement of 9 to reduce the volume. When the electric blower 1a is driven next time, the partition wall 9 rises again to absorb dust, and a part of dust is accumulated in the second dust collection chamber 8.

As described above, the dust in the second dust collecting chamber 8 is compressed every time the electric blower 1a is driven / stopped.
The empty volume in the dust collection chamber 8 increases, and more dust can be accumulated without throwing away the dust. Therefore, the second dust collecting chamber 8
You can reduce the number of times you throw away the dust inside,
The second dust collecting chamber 8 itself can be downsized.

Further, since the exhaust port 5b on the side surface of the exhaust port 15 can be cleaned without maintenance, it is not necessary to manually clean the exhaust port 5b which tends to be troublesome and unsanitary.
The dust collected in the first and second dust collecting chambers 7 and 8 pushes down the dust collecting chambers 7 and 8 as a unit to lock the lock mechanism 30.
It is thrown away by releasing and removing it as a unit.

<Fourth Embodiment> A fourth embodiment of the present invention will be described with reference to the drawings. FIG. 7 is a side sectional view of the cyclone dust collecting portion of the electric vacuum cleaner according to the present embodiment. This embodiment is a modification of the third embodiment,
The same members as those of the electric vacuum cleaner according to the third embodiment shown in FIG. 5 are designated by common reference numerals, and detailed description thereof will be omitted.

FIG. 7 shows the float 56, the connecting arm 23,
An example of a method of connecting the cleaning tool 21 and the partition wall 9 is shown in cross section. As in the third embodiment, the cleaning tool 21 is connected via the connecting arm 23 so as to interlock with the vertical movement of the float 56 disposed in the working chamber 55.

A characteristic configuration of this embodiment will be described. Reference numeral 581 denotes a first connecting rod having an upper end fixed to the back side of the upper surface of the float 56 and hanging down along the center of the axis. The lower end of the first connecting rod 581 is a disc-shaped collar portion 581a, and the first connecting rod 581 is inserted into the second connecting rod 582. Reference numeral 60 denotes a spring supported by a spring receiving portion 581b arranged at an appropriate position of the first connecting rod 581, and biases the second connecting rod 582 downward with a weaker force than the spring 57. The partition wall 9 is attached to the lower end of the second connecting rod 582 with a screw 61.

Inside the second connecting rod 582, a cylindrical first space 582a and a second space 582b having different inner diameters are coaxially formed with a step portion 582c, and the second space 5 is formed.
The inner diameter of 82b is selected to be approximately the same as the outer diameter of the flange portion 581a of the first connecting rod 581 that is inserted from the upper end of the first space 582a. Therefore, in the state where the second connecting rod 582 is completely pushed downward by the spring 60 as shown in the drawing, the collar portion 581a of the first connecting rod 581 has the step portion 582.
The second connecting rod 582 is adapted to come into contact with c and be locked at a predetermined position.

When the electric blower 1a is driven with such a structure, the float 56 is sucked toward the connecting pipe 10b and rises until it comes into contact with the stopper 10c. This allows
The air intake passage communicates with the electric blower 1a, the suction hose 2, the working chamber 55, the cyclone dust suction section 5, the connection pipe 3, and the suction port body 4 in this order.

At this time, the cleaning tool 21 and the partition wall 9 ascend together with the float 56. As a result, the brush 22 provided on the cleaning tool 21 causes the exhaust port 5 b on the side surface of the exhaust pipe 15 to move.
When the surface of the second dust collection chamber 8 is rubbed, the attached dust is removed, and the partition wall 9 rises to expand the volume in the second dust collection chamber 8.

When the cleaning tool 21 rises together with the float 56, the collar portion 23b of the connecting arm 23 is pressed against the seal member 59, so that inflow of intake air from the guide hole 20b of the intake guide 20 into the working chamber 55 is prevented. It Therefore, the intake flow passes through the exhaust port 15 without leaking to other parts,
The electric blower 1a is efficiently sucked.

The intake air flows together with the dust from the connection pipe 3 through the inflow port 5a into the cyclone dust collecting section 5, where
The dust is separated while swirling in the dust collection chamber 7. Part of the separated dust passes around the partition wall 9 and is accumulated in the second dust collecting chamber 8. The intake air flow from which the dust has been separated passes through the exhaust port 5b of the exhaust pipe 15 through the exhaust pipe 15 through the gap around the float 56, reaches the electric blower 1a through the opening 10d, and is exhausted.

When the drive of the electric blower 1a is stopped, the negative pressure in the working chamber 55 is released and the float 56 is
Together with the partition wall 9 and the cleaning tool 21, it is moved downward by the urging force of the strong spring 57 until it comes into contact with the holding portion 20a of the intake duct 20. At this time, if a large amount of dust is accumulated in the second dust collecting chamber 8, the spring 60 is weakly biased and the lowering of the partition wall 9 is stopped halfway.

According to this, even when the lowering of the partition wall 9 is restricted by the dust accumulated in the second dust collecting chamber 8, the cleaning tool 21 can be reliably lowered to the lower end of the exhaust pipe 15, and the cleaning tool The brush 22 provided at 21 can remove dust adhering to the surface of the exhaust port 5b on the side surface of the exhaust tube 15.

<Fifth Embodiment> A fifth embodiment of the present invention will be described with reference to the drawings. FIG. 8 is a side sectional view of the cyclone dust collecting portion of the electric vacuum cleaner according to the present embodiment. In FIG. 8, the same members as those of the electric vacuum cleaner according to the second embodiment shown in FIG. 2 are designated by common reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 8, the characteristic feature of this embodiment is that a partition wall 9 for partitioning the first dust collecting chamber 7 and the second dust collecting chamber 8 is provided.
Is fixed to the first dust collecting chamber 7 and the float 56 is provided with the cleaning tool 21.
That is, the only one is connected via the connecting arm 23.

As shown in FIG. 8A, the float 56 is pressed against the holding portion 20a side of the intake duct 20 by the biasing force of the spring 57, and the intake passage upstream of the holding portion 20a is blocked. When the electric blower 1a is driven in this state, a negative pressure is generated in the working chamber 55 that is closed by the generated intake air, and the float 56 resists the urging of the spring 57.
As shown in (b), it is sucked toward the connecting pipe 10b and rises until it comes into contact with the stopper 10c. As a result, the air intake passage communicates with the electric blower 1a, the suction hose 2, the working chamber 55, the cyclone dust suction section 5, the connection pipe 3, and the suction port body 4 in this order.

At this time, the cleaning tool 21 ascends in association with the float 56. As a result, the brush 22 provided with the cleaning tool 21 rubs the surface of the exhaust port 5b on the side surface of the exhaust pipe 15, and the attached dust is removed.

When the cleaning tool 21 rises together with the float 56, the collar portion 23b of the connecting arm 23 is pressed against the seal member 59, so that the intake air is prevented from flowing into the working chamber 55 from the guide hole 20b of the intake guide 20. It Therefore, the intake flow passes through the exhaust port 15 without leaking to other parts,
The electric blower 1a is efficiently sucked.

The intake air flows together with the dust from the connection pipe 3 through the inflow port 5a into the cyclone dust collecting section 5, where
The dust is separated while swirling in the dust collection chamber 7. Part of the separated dust passes through the opening 9a of the partition wall 9 and is accumulated in the second dust collecting chamber 8. The intake flow from which dust has been separated is the exhaust stack 1
5 through the exhaust port 5b, the inside of the exhaust pipe 15 and the clearance around the float 56, and the electric blower 1a from the opening 10d.
Is exhausted.

When the driving of the electric blower 1a is stopped, the negative pressure in the working chamber 55 is released and the float 56 is
The partition wall 9 and the cleaning tool 21 are lowered by the urging force of the spring 57 to return to the state shown in FIG. This allows
The brush 22 provided on the cleaning tool 21 rubs the surface of the exhaust port 5b on the side surface of the exhaust pipe 15 to remove the attached dust.

Therefore, since the exhaust port 5b on the side surface of the exhaust port 15 can be cleaned without maintenance, it is not necessary to manually clean the exhaust port 5b which tends to be troublesome and unsanitary. For the dust collected in the first and second dust collecting chambers 7 and 8, the dust collecting chambers 7 and 8 should be pushed down integrally to release the lock mechanism 30, and the dust should be separated after being integrally removed. Thrown away at.

The float 56 described in the above embodiment,
Members such as the cleaning tool 21, the partition wall 9 and the connecting rods 58, 581 and 582 that are interlocked with the float 56 may be formed of a material having a large specific gravity such as metal or composite resin. In this case, when the electric blower 1a is stopped, the float 56 returns by its own weight, so that the springs 57 and 60 are unnecessary, and the configuration can be simplified and the cost can be reduced.

<Sixth Embodiment> A sixth embodiment of the present invention will be described with reference to the drawings. FIG. 9 is a side sectional view of the cyclone dust collecting portion of the electric vacuum cleaner according to the present embodiment. This embodiment is a modification of the third embodiment,
The same members as those of the electric vacuum cleaner according to the third embodiment shown in FIG. 5 are designated by common reference numerals, and detailed description thereof will be omitted.

In the working chamber 55 described above, for example, in the embodiment of FIG. 2, when the output of the electric blower 1a or the resistance of the intake passage increases and the air volume of the intake passage decreases, the float 56 rises to the position where it abuts on the stopper 10c. Without doing this, repeat up and down movement in an unstable state on the way. Therefore, with the configuration shown in FIG. 9, the float 56 can stably and reliably raise the predetermined distance, and the cleaning tool 21 or the partition wall 9 can be moved by the predetermined distance.

In FIG. 9, the float 5 is placed in the working chamber 55.
Float guide 55 having an inner diameter substantially corresponding to the outer diameter of 6
1 is provided. In the float 551, the float 56 is biased downward by the spring 57. An exhaust port 551b that opens when the suction port 551a and the float 56 are raised to a predetermined position is opened upward and communicates with the inside of the working chamber 55.

The electric blower 1 having the above configuration (state shown in FIG. 9a)
When a is driven, the float guide 551b communicating with the inside of the working chamber 55 and the suction port 551a opens, and the intake flow sucked from the suction port body 4 has a negative pressure in the exhaust port 551,
The float 56 rises. When the float 56 rises and the exhaust port 551b is opened, the intake flow sucked from the suction port body 4 flows from the exhaust port 551b into the working chamber 55 and the connecting pipe 10b.
After that, the electric blower 1a is sucked and exhausted. The float 56 surely rises to a position where the exhaust port 551b opens. Therefore, if this distance is set to the required movement distance of the cleaning tool 21 and the partition wall 9, the functions of cleaning and compression can be reliably performed.

Further, by providing the wall 9b directed downward in the outer peripheral direction of the partition wall 9, it is possible to prevent dust accumulated below the partition wall 9 from flying up above the partition wall 9. Further, the cyclone dust collecting section 5 has been described as including the separable first and second dust collecting chambers 7 and 8, but these may be configured as a single body and integrated.

[0079]

As described above, according to the present invention, the compression means can be moved up and down by driving and stopping the electric blower to compress the dust accumulated in the cyclone type dust collecting portion and reduce the volume. As a result, the empty volume in the cyclone type dust collecting section increases, and more dust can be accumulated without throwing it away. Therefore, it is possible to reduce the number of times the dust in the cyclone type dust collecting section is discarded and to reduce the size of the cyclone type dust collecting section itself.

Further, according to the present invention, the cleaning means is provided for the exhaust port of the exhaust pipe through which the intake air flowing into the cyclone type dust collecting section together with the dust by the drive of the electric blower is discharged to the intake passage outside the cyclone type dust collecting section. Cleaning is done without maintenance, so there is no need for manual cleaning, which is tedious and unhygienic.

[Brief description of drawings]

FIG. 1 is a side sectional view of a cyclone dust collecting portion of an electric vacuum cleaner according to a first embodiment of the present invention.

FIG. 2 is a side sectional view of a cyclone dust collecting portion of the electric vacuum cleaner according to the second embodiment of the present invention.

FIG. 3 is a perspective view of a main part of the cyclone dust collecting unit.

FIG. 4 is a perspective view of a compression unit of the cyclone dust collecting unit.

FIG. 5 is a side sectional view of a cyclone dust collecting portion of the electric vacuum cleaner according to the third embodiment of the present invention.

FIG. 6 is a perspective view of cleaning means for the cyclone dust collecting portion.

FIG. 7 is a side sectional view of a cyclone dust collecting portion of the electric vacuum cleaner according to the fourth embodiment of the present invention.

FIG. 8 is a side sectional view of a cyclone dust collecting portion of the electric vacuum cleaner according to the fifth embodiment of the present invention.

FIG. 9 is a side sectional view of a cyclone dust collecting portion of an electric vacuum cleaner according to a sixth embodiment of the present invention.

FIG. 10 is a schematic side view of a conventional electric vacuum cleaner.

FIG. 11 is a side sectional view of a cyclone dust collecting portion of the electric vacuum cleaner.

FIG. 12 is a top sectional view of the cyclone dust collecting portion.

FIG. 13 is a perspective view of a partition wall that partitions the inside of the cyclone dust collecting portion.

[Explanation of symbols]

1 Vacuum cleaner body 1a Electric blower 2 suction hose 3 connection pipe 4 Suction mouth 5 Cyclone dust collector 6 packing 7 First dust collection chamber 8 Second dust collection chamber 9 partitions 10 Connection member 10b connecting pipe 10c stopper 10d opening 20 Air intake guide 20a holding part 21 Cleaning tool 22 brushes 23 connecting arm 30 lock mechanism 50 Control room 51 Operation part 52 Operation rod 53,59 Seal member 54, 57, 60 springs 55 Working room 551 float guide 56 float 57 spring 58 connecting rod 59 Seal member 61 screws 581 First connection rod 582 Second connection rod

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-4-370030 (JP, A) Actually open 3-65545 (JP, U) Actually open 56-136649 (JP, U) Actual public 47- 12690 (JP, Y1) (58) Fields surveyed (Int.Cl. ⁷ , DB name) A47L 9/16 A47L 9/20

Claims (9)

(57) [Claims] 1. A suction port body having an intake port, an electric blower for generating intake air, an intake path provided between the suction port body and the electric blower, and an intake air flowing in the intake path. In a vacuum cleaner provided with a cyclone type dust collecting part for separating dust by swirling, a compression means for compressing the dust accumulated in the dust collecting chamber in the cyclone type dust collecting part is provided , and the dust collecting chamber Is an electric vacuum cleaner which is detachable from the cyclone type dust collecting unit . 2. Generates intake air with an intake port body that has an intake port
An electric blower, the suction port body, and the electric blower
Between the intake path and the intake path
With a cyclone type dust collecting part that separates dust by swirling the intake air
In an electric vacuum cleaner equipped with There is an opening or a gap inside the cyclone type dust collector.
Inside the cyclone type dust collecting part
Is the first dust collecting chamber for separating dust and the separated dust
Separated from the second dust collecting chamber, Compression for compressing the dust accumulated in the second dust collecting chamber
An electric vacuum cleaner characterized by having means. 3. The compression means is interlocked with the partition wall ,
Of the electric vacuum cleaner according to 請 <br/> Motomeko 2 you, characterized in that the partition wall arranged to cyclonic dust collection outer operation section to depress to a position lower the second dust collection chamber. 4. A suction port body having an intake port and generating intake air
An electric blower, the suction port body, and the electric blower
Between the intake path and the intake path
With a cyclone type dust collecting part that separates dust by swirling the intake air
In an electric vacuum cleaner equipped with, the dust accumulated in the cyclone type dust collecting section is compressed.
And a compression chamber that is provided above the cyclone type dust collecting unit and communicates with the intake passage via the cyclone type dust collecting unit, and is urged below the working chamber. float and a connecting rod having one end to the float is fixed, electric cleaner characterized in that it consists of a compression member mounted on the other end of the connecting rod. 5. The inside and outside of the cyclone type dust collecting portion are communicated with each other.
An electric vacuum cleaner according to claim 4 , wherein an exhaust pipe having an exhaust port formed therein is provided, and the connecting rod is inserted into the exhaust pipe. 6. The vacuum cleaner according to 請 Motomeko 5 characterized in that a cleaning means for cleaning the exhaust port of the exhaust pipe that moves in conjunction with said compression means. 7. The electric vacuum cleaner according to claim 6, wherein the cleaning unit is connected to the float. 8. A suction port body having an intake port, an electric blower for generating intake air, an intake path provided between the suction port body and the electric blower, and an intake air flown in the intake path. In a vacuum cleaner equipped with a cyclone type dust collecting part for rotating to separate dust, an exhaust pipe having an exhaust port formed by communicating the inside and outside of the cyclone type dust collecting part, and driving the electric blower or An electric vacuum cleaner, comprising: a cleaning unit that cleans the exhaust port of the exhaust stack when stopped . 9. A suction port body having an intake port and generating intake air
An electric blower, the suction port body, and the electric blower
Between the intake path and the intake path
With a cyclone type dust collecting part that separates dust by swirling the intake air
In an electric vacuum cleaner equipped with, an exhaust port is formed by communicating the inside and outside of the cyclone type dust collecting part.
And a cleaning means for cleaning the exhaust port of the exhaust cylinder. The cleaning means is provided above the cyclone type dust collecting portion, and the intake passage is provided through the cyclone type dust collecting portion. A working chamber communicating with the working chamber, a float urged below the working chamber, and a connection extending vertically from the float into the cyclone dust collecting portion so as to maintain a predetermined distance from the exhaust port of the exhaust stack. arm and, electric cleaner you characterized in that it consists of a brush which is mounted toward the exhaust port of the exhaust pipe to the connecting arm.