JPS6330008B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a portable vacuum cleaner.

[Conventional technology]

This type of vacuum cleaner is equipped with a dust removal lever having a dust remover on the back of the main filter, and a mounting frame body to which this dust removal lever is detachably attached. By rotating the dust remover, the dust remover slides on the back surface of the main filter, and when the main filter is pulled out of the dust collection case, the main filter is pulled out using the dust removal lever.

[Problem that the invention seeks to solve]

The conventional technology described above has the disadvantage that when the main filter is pulled out from the dust collection case, excessive force is applied to the dust removal lever, which deforms the dust removal lever or the mounting frame and causes the dust removal lever to come off from the mounting frame. There is.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks and provide a vacuum cleaner in which the dust removal lever does not come off from the mounting frame even when the main filter is pulled out from the dust collection case with a strong force. It is in.

[Means for solving problems]

The above purpose is to provide a main body case with an electric blower inside, a dust collection case removably installed in the main case and equipped with an intake port, a net filter removably installed inside the dust collection case, and In the vacuum cleaner, the vacuum cleaner includes a main filter located downstream of the net filter and removably provided in the dust collection case, and a dust removal device provided downstream of the main filter, the dust removal device comprising:
It consists of a dust removal lever that also serves as a main filter take-out knob and a mounting frame 36 to which this dust removal lever is detachably attached.
The main filter includes a wavy and bent filter medium;
The mounting frame includes a frame body made of synthetic resin that maintains the shape of the filter medium, and a rotating shaft body through which the dust removal lever reciprocates in a fan shape, and a free end of the dust removal lever that is connected to the main filter. A movement blocking body that prevents movement away from the back surface and a rail that allows the dust removal lever to reciprocate in a fan shape are integrally formed, and one end of the dust removal lever is connected to the rotation shaft. and with the other end locked to the movement blocking body, the rotating shaft body is fitted into a hole provided in the frame body of the main filter, and further, the mounting frame body and the main filter body are fitted together. This is achieved by integrating both filters with a filter packing provided on the outer periphery of the main filter.

[Effect]

When discarding dust, remove the dust collection case from the main body case and move the dust removal lever back and forth along the rail. One end of the dust removal lever fits into the rotating shaft of the mounting frame, and the other end is locked to the movement blocking body, so that the rotating shaft can be moved away from the main tileter without lifting up. It rotates in a fan shape around the center. Therefore, the dust remover slides on the back of the main filter,
Dust is removed from the main filter.

Next, to pull out the main filter from the dust collection case, all you have to do is grasp the dust removal lever and pull it outward. At this time, the rotating shaft of the dust removal lever, that is, the rotating shaft body, is formed integrally with the mounting frame and is fitted into the hole in the frame of the main filter, so do not force the dust removal lever with excessive force. Even if the dust removal lever is lifted up against the tightening force of the filter packing to such an extent that the rotating shaft comes out of the hole in the frame, the dust removal lever will not come off from the mounting frame. Therefore, by pulling the dust removal lever outward, the main filter can be easily removed from the dust collection case.

In the event that the dust removal lever or the mounting frame is damaged, lift the filter gasket, remove the installation frame from the main filter, separate the installation frame and the dust removal lever, and then install a new dust removal lever or new installation frame. All you have to do is replace it, and there is no need to replace the expensive main filter.

〔Example〕

Next, the present invention will be described in detail with reference to drawings showing embodiments thereof.

In the drawings, the vacuum cleaner consists of a main body case 2 in which an electric blower 1 is housed, and a dust collection case 4 that is detachably provided via a clamp 3. The main case 2 has an electric blower 1 that creates suction power.
is supported by anti-vibration rubbers 5 and 6 that absorb vibrations. Around the electric blower 1, there is a sound absorbing material 7 for sound absorption.
is installed. Inside the main body case 2, an electric blower chamber 8 and an exhaust chamber 9 are defined by ribs 11 with smooth channel corners 10. The exhaust chamber 9 is provided with an exhaust port 13 covered from the inside with an after filter 12 and a connection socket 14. A notch 16 is provided in a portion of the rib 11 near the connection socket terminal 15, through which a portion of the exhaust air from the electric blower 1 flows.

The main body case 2 is provided with a bypass valve 17 for preventing the electric blower 1 from burning out. One side of this valve 17 communicates with the atmosphere and the other side communicates with the electric blower 1 side.

A handle 18 is provided at the upper end of the main body case 2. The handle 18 is provided with a hand switch 19 that can be turned on and off with the fingers of the hand gripping the handle 18.

The main case has a hook boss 21 for the shoulder band 20 and a cord hanger 2 on one side.
3, and a hose hook 22 is provided on the other side. The cord hanger 23 is provided with a spring stopper 25 having a protrusion 24 at its end. When the cord hanger 23 is not in use, it is locked to the main body case 2 side, and when the cord is wound up and hung, it is pulled out from the main body case 2 side. Horse hook 22
The sides are fixed, and the hooks are configured so that they do not protrude from the sides of the main case 2.

The dust collection case 4 side is equipped with an intake port 27 to which a hose 26 is connected, and a check valve 28 made of rubber or the like is provided at the end of the intake port 27.
9 is configured to reliably close the opening 30. Inside the dust collection case 4, there is a container-shaped net filter 31 that captures coarse dust such as cotton dust.
and a main filter 32 that captures fine dust such as sand and dust.
There is. The net filter 31 has an opening 33 on one side, and when attached to the dust collection case 4, it is closed by the inner wall 38 of the dust collection case 4.

A dust removal device is provided on the back side of the main filter 32. The dust removal device consists of a dust removal lever 35 having a dust removal element 34 and a mounting frame 36 for mounting the dust removal lever 35 on the main filter 32.

The mounting frame 36 includes a rotation shaft 37 for reciprocating the dust removal lever 35 in a fan shape, and
a rail 36a for reciprocating in a fan shape; and a movement prevention body 3 for preventing the free end of the dust removal lever 35 from moving away from the back surface of the main filter 32.
6b are integrally formed.

The main filter 32 includes a filter medium 3 that is bent into a wave shape.
2a, and a frame body 32b made of synthetic resin that retains the shape of the filter medium 32a. The frame body 32b is provided with a hole 32c into which the rotation shaft body 37 of the attachment frame body 36 is fitted.

The dust remover 34 is made of wire and is detachably attached to the dust removal lever 35. The dust removal lever 35 has a rotation hole 35 provided at one end 35a.
b is fitted into the rotation shaft 37 of the mounting frame 36, and the other end 35c is fitted into the movement blocking body 36b of the mounting frame 36.
By locking the mounting frame 36, the mounting frame 36 moves in a fan shape along the rail 36a of the mounting frame 36.

The main filter 32 and the mounting frame 36 are integrated by a filter packing 39 attached to the outer periphery of the main filter 32. The net filter 31 and the main filter 32 are configured to be freely removable from the dust collection case 4.

When the main filter 32 is attached to the dust collection case 4, the filter packing 39 comes into pressure contact with the inner wall of the dust collection case 4, and airtightness from the outside of the dust collection case 4 is maintained.

When the net filter 31 is installed in the dust collecting case 4, the opening 33 of the net filter 31 is pressed against the inner wall of the dust collecting case 4 by the position correction protrusion 40 provided on the inner wall of the dust collecting case 4, and the opening 33 is pressed against the inner wall of the dust collecting case 4. 33 airtightness is ensured. The dust collecting case 4 is integrally provided with ribs 41 on both sides of a portion of the inner wall of the dust collecting case 4 that is in pressure contact with the opening 33. The net filter 31 is a frame 32 of the main filter 32.
b, and remove the main filter 32 from the dust collection case 4.
When the main filter 32 is pulled out, it is pulled out together with the main filter 32.

In the above configuration, when cleaning, hold the handle 18 and attach the extension tube or suction port to the end of the hose or the power cord to the connection socket 14, and then turn the hand switch 18 to "ON" to start the electric blower 1. Then, a suction force is generated, and air flow containing a large amount of dust from the suction port pushes open the check valve 28 of the dust collection case 4 and flows in, and the net filter 31 removes coarse dust such as cotton. Filter 3
2, fine dust such as sand is filtered, and only clean air passes through the interior of the electric blower 1, around the end of the rib 11, and after passing through the after filter 12, is discharged to the outside from the exhaust port 13. If you continue to vacuum for a long time, the inside of the dust collection case 4 will become filled with dust and the main filter 32 will become clogged, so the pressure between the electric blower 1 and the main filter 32 will decrease, and at the same time the inside of the electric blower 1 will become clogged. Since the amount of air passing through decreases, the temperature of the electric blower room 8 also increases. At this time, when the pressure between the main filter 32 and the electric blower 1 is reduced to a certain set pressure, the bypass valve 17 opens and air flow enters from the outside.
The temperature of the electric blower room 8 is suppressed from rising.

When disposing of dust, turn the hand switch to "off", press the clamp 3 to separate the main case 2 and the dust collection case 4, pinch the dust removal lever 35, slide the dust removal lever 35 back and forth from side to side, and Shake off the dust from the filter 32. After that, hold the dust removal lever 35 and remove the net filter 31 and main filter 32 together from the dust collection case 24, and remove the fine dust that has fallen between the two filters 31 and 32 from the opening 33 of the net filter 31 into the dust collection case 4. Drop it inside. Thereafter, the dust disposal work is completed by discharging the fine dust together with the cotton dust in the dust collecting case 4.

As shown by the dotted line in FIG. 2, when the dust removal lever 35 is pulled outward with excessive force, it becomes the pivot axis of the dust removal lever 35. Since the rotating shaft body 37 is integrally formed with the mounting frame body 36, even if the rotating shaft body 37 comes out from the hole 32c of the main filter 32, the dust removal lever 35 will not move from the mounting frame body.
It never deviates from 6. In case, the dust removal lever 35
Alternatively, if the mounting frame 36 is damaged, lift the filter gasket 39 and separate the mounting frame 36 from the main filter 32, then separate the mounting frame 36 and the dust removal lever 35, and then install a new dust removal lever 35 or a new one. It is only necessary to replace the mounting frame 36, and there is no need to replace the main filter 32.

〔Effect of the invention〕

As described above, according to the present invention, the dust removal device includes a dust removal lever that has a dust removal element and also serves as a main filter take-out knob, and a mounting frame body to which this dust removal lever is detachably attached.
The main filter includes a wavy and bent filter medium;
The mounting frame includes a frame body made of synthetic resin that retains the shape of the filter medium, and a rotation shaft body for reciprocating the dust removal lever in a fan shape, and a free end of the dust removal lever that is connected to the main body. A movement blocking body that prevents the filter from moving in a direction away from the rear surface of the filter and a rail that allows the dust removal lever to reciprocate in a fan shape are integrally formed, and one end of the dust removal lever is configured to rotate as described above. The rotary shaft is fitted into a hole provided in the frame of the main filter with the other end being engaged with the shaft and the other end is locked with the movement blocking body, and the rotating shaft is fitted with the mounting frame. Since both of the main filters are integrated by a filter gasket provided on the outer periphery of the main filter, even if the dust removal lever is pulled outward with strong force, the dust removal lever will not come off from the dust collection case, and the dust collection will continue. You can get a vacuum cleaner that allows you to smoothly pull out the main filter from the dust case.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of a vacuum cleaner showing an embodiment of the present invention, FIG. 2 is an enlarged cross-sectional view of a dust removal lever, and FIG. 3 is an exploded perspective view of a main part. 1...Electric blower, 2...Main body case, 4...Dust collection case, 27...Intake port, 31...Net filter,
32... Main filter, 32a... Filter medium, 32b... Frame, 32c... Hole, 34... Dust remover, 35... Dust remover lever, 35b... Rotating hole, 36... Mounting frame, 36a...
Rail, 36b... Movement blocking body, 37... Rotating shaft body,
39...Filter Packkin.

Claims (1)

[Claims] 1. A main body case with an electric blower inside, a dust collection case removably installed in the main case and equipped with an intake port, a net filter removably installed in this dust collection case, and a net filter installed in the dust collection case in a removable manner. In the vacuum cleaner, the vacuum cleaner includes a main filter located downstream and removably provided in the dust collection case, and a dust removal device provided downstream of the main filter, wherein the dust removal device includes a main filter having a dust removal element. The main filter consists of a dust removal lever that also serves as a take-out knob and a mounting frame body to which this dust removal lever is detachably attached.Moreover, the main filter has a wavy bent filter medium and a frame made of synthetic resin that holds the filter medium in shape. The mounting frame body includes a rotating shaft body for reciprocating the dust removal lever in a fan shape, and a rotation shaft body for preventing the free end of the dust removal lever from moving away from the back surface of the main filter. A movement blocking body and a rail for the dust removal lever to reciprocate in a fan shape are integrally formed, and one end of the dust removal lever is fitted to the rotating shaft, and the other end is fitted to the rotation shaft. Fitting the rotating shaft body into a hole provided in the frame body of the main filter while being locked to the movement blocking body, and further,
A vacuum cleaner characterized in that both the mounting frame and the main filter are integrated by a filter packing provided on the outer periphery of the main filter.