JPS6355330B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vacuum cleaner, and particularly to an improvement in the dust removal structure of a bellows-shaped filter.

Conventionally, a vacuum cleaner is equipped with an electric blower and a bellows-shaped filter in a vacuum cleaner case, and as shown in FIG. A dust removal body d having a comb-like dust removal element c that slides into the
A structure is known in which a pair of filters A are arranged in parallel and connected at a distance from each other in the direction of the groove b on the intake surface.

In such a vacuum cleaner, the dust remover c slides on the suction surface of the filter a to remove dust adhering to the suction surface, but the slide movement range of the pair of conventional dust removers c is as follows: One dust remover c
moves in the range l ₁ from the open end of one side of the groove b on the intake surface to the middle position of the groove b, and the dust remover c on the other side moves.
is the range from the middle position of groove b to the open end on the other side
l Set to move ₂ .

However, with this configuration in which each pair of dust removers removes dust by handling only two parts of the intake surface, the dust attached to the middle part of the groove on the intake surface is not collected during dust removal. This resulted in the inconvenience that dust remained in the intermediate portion, resulting in a poor dust removal effect.

Therefore, in view of the above-mentioned conventional situation, the present invention overlaps the slide movement ranges of a pair of dust removers each having a comb-like dust remover at a position approximately in the middle of the intake surface of the bellows-like filter. By configuring the filter to fall within this range, it is possible to prevent dust from accumulating at a substantially intermediate position on the intake surface of the filter, thereby providing a vacuum cleaner with improved dust removal effect.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 6.

In FIG. 1, 1 is a vacuum cleaner case, which is configured to be able to be divided into a dust collection case 2 and a main body case 3, 4 is an inlet provided at the front of the dust collection case 2, and 5 is a main body case 3. An exhaust port 6 provided at the rear of the main body case 3 is an electric blower housed inside the main body case 3.

A main filter device 7 and a pre-filter device 8 are detachably housed in the dust collection case 2, and the outer periphery of the frame 9 of the main filter device 7 is made airtight by the dust collection case 2 and the packing 10. ing. As shown in FIG. 4, the frame body 9 has a sliding wall 11 at its vertical center, a drive bearing 12 in the middle of this sliding wall 11, and guide grooves 1 above and below this bearing 12.
3 and 13 are formed. Reference numeral 14 designates a main filter as a bellows-shaped filter according to the present invention, which is supported on the front surface of the frame 9 on the left and right sides of the sliding wall 11, and the intake side of this filter 14 is a dust adhesion surface; is main filter 14
The peak on the intake surface side, and 14b are the valleys on the intake surface side.

In FIGS. 2 and 5, reference numeral 15 denotes an intermediate member that covers the main filter 14, and supports the main filter 14 by engaging a mounting hole 15a formed in its side surface with a hook 16 protruding from the frame 9. . The upper and lower surfaces of the intermediate member 15 are open and serve as entrances and exits for dust.
It also has a dust suction port 17 on the front surface. Further, elongated holes 18, 18 are formed in the upper and lower sides of the side surface. In FIG. 6, reference numeral 19 denotes a frame-shaped sliding dust removal body, and a guide groove 1 of the sliding wall 11 is formed in the center of horizontal frames 20, 20, which serve as upper and lower dust removal bodies arranged vertically and spaced apart from each other.
3 and 13, and the elongated holes 18 and 21 are provided on both upper and lower sides of the vertical frames 20a and 20a.
It has tongue pieces 22, 22 that engage with the tongue 18. In addition, comb-shaped dust removers 23 protrude from the upper and lower horizontal frames 20 on the left and right sides of the projections 21, respectively.
3 are respectively engaged in grooves formed between adjacent top portions 14a, 14a of the main filter 14.

Reference numeral 24 denotes a rack that is vertically movably supported by the support piece 25 of the intermediate member 15.
The convex portion 24b at the lower end is fitted into the dust removing body 1.
It is connected to 9. Pin 24a of this rack 24
One end of the spring 26 is fixed to the pin 27 of the intermediate member 15, and the other end of the spring 26 is fixed to the pin 27 of the intermediate member 15. Nao spring 26
One end may be supported on the sliding dust removal body 19 side.

28 is a rotary drive shaft supported by the drive bearing 12, and the rear end of this drive shaft 28 (right end in Figure 1)
A rotary dust removing body 29 is attached to the main filter 14 in sliding contact with the exhaust surface side of the main filter 14. 30 is a contact, 3
1 is a handle. On the other hand, a disk 32 is formed at the front end of the drive shaft 28 on the intake side, and a gear 33 that meshes with the rack 24 is provided on a part of the outer periphery of this disk. Further, a connecting piece 34 is provided on the front surface of the disc 32, and a pre-dust remover 36 is connected to this connecting piece 34 with a connecting tool 35. The prefilter device 8 is installed so as to cover the main filter device 7, and the front surface of the prefilter device 8 is connected to the net 37.
is supported by the frame 38. And this net 3
The pre-dust remover 36 can be rotatably brought into sliding contact with the suction surface of the dust filter 7 .

Here, a reinforcing part 41 is formed in the valley part 14b on the intake surface side of the main filter 14 by resin poured in when molding the frame 9 supporting the filter 14 with resin, and serves to reinforce the filter 14. Of course, the reinforcing part 41 eliminates the sharp part of the valley part 14b, and since dust accumulates on the reinforcing part 41, the tip of the dust remover 23 is no longer sharp as in the conventional case. Both dust can be easily removed, the tip of the dust remover 23 does not become weak, and the risk of damage etc. can be eliminated.

Further, the upper and lower end surfaces of the sliding wall 11 are cut out, so that dust that has entered the guide groove 13 can be easily removed.

Further, the disc 32 has a gear 33 having more teeth than the rack 24, so that when the dust remover 23 is lowered, the uppermost teeth of the rack 24 are connected to the remaining teeth that do not mesh with the teeth of the rack 24. By hitting the dust remover 23 with the teeth of the gear 33, a slight vibration is applied to the dust remover 23 through the rack 24, so that dust adhering to the main filter 14 can be removed more effectively.

As shown in FIG. 7, the distance is calculated from the end position of the upper dust remover, that is, the end position of the upper side frame 20 at the end of its slide, to the end position of the lower side frame 20 at the end of its lower slide. L, dust remover 2
When the slide movement range of each of the three is l ₁ and l ₂ ,
L<l ₁ +l ₂ and the slide movement ranges of the dust removers 23 are made to overlap each other at approximately the middle position of the intake surface.

Next, the operation will be explained. The electric blower 6 drives air from the suction port 4 together with the dust collection case 2.
Regarding the dust that has flowed into the filter, large particles such as cotton dust adhere to the net 37 of the prefilter device 8, while small particles pass through the net 37 and are deposited on the intermediate member 1.
It attaches to the main filter 14 from the suction port 17 of No. 5. In this manner, the dust removal operation is performed by separating the dust collecting case 2 from the main body case 3 and rotating the handle 31 (the driving force of a cord reel or a motor may also be used). Strike the side to remove dust. On the other hand, since the drive shaft 28 to which the rotary dust remover 29 is connected rotates, the third
Pull the rack 24 down against the spring 26 as shown. As a result, the dust remover 19 connected to the rack 24 descends along the guide groove 13, and the dust remover 2
3.... slides on the intake surface of the main filter 14 and removes dust attached thereto. Thereafter, when the dust removers 23, . For this reason, the main filter 14
vibrates to ensure more reliable dust removal. Further, since the pre-dust remover 36 comes into rotational and sliding contact with the intake surface of the net 37 due to the rotation of the disc 32, the net 37
Dust such as cotton waste trapped in the mesh spreads the mesh and falls to the main filter 14 side. Note that when the electric blower 6 is restarted after the above operation, dust such as cotton dust will be removed from the main filter 1.
However, when the next dust removal operation of the dust removal body 19 is performed, this dust falls in the form of lumps.

According to this configuration, since the slide movement ranges of the pair of dust removers 23 are made to overlap each other at approximately the middle position of the intake surface, the dust adhered to the middle part of the groove of the main filter 14 can be smoothly removed by the dust removers. 23, the dust can be collected and discharged toward the upper and lower open ends of the groove, and dust can be removed reliably without collecting dust in the middle part of the main filter 14 as in the conventional case.

In addition, in this embodiment, the main filter 1
Although an example has been described in which the main filter 14 is set so that its groove portion extends in the vertical direction, the present invention may also be applied to an example in which the main filter 14 is set so that its groove portion extends in the horizontal direction.

As explained above, according to the present invention, since the slide movement ranges of each of the pair of dust removers are overlapped at approximately the middle position of the intake surface, the dust attached to the middle part of the filter on the intake surface side can be reliably removed. can be removed, and the dust removal effect can be improved.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of a vacuum cleaner showing an embodiment of the present invention, FIG. 2 is a perspective view of the main filter device, FIG. 3 is a perspective view showing the operation of FIG. 2, and FIG.
The figure is a perspective view of the main filter, Figure 5 is a perspective view of the intermediate member, Figure 6 is an exploded perspective view of the dust remover and its operating members, and Figure 7 is the relationship between the sliding distance of the dust remover and the sliding range of the dust remover. Schematic diagram showing the 8th
The figure is a schematic diagram showing a conventional filter dust removal structure. 1...Vacuum cleaner case, 6...Electric blower, 14
...Main filter, 14a...Top, 20...
...Horizontal frame, 23...Dust remover.

Claims (1)

[Claims] 1 A vacuum cleaner case is equipped with an electric blower and a bellows-shaped filter, and the filter has a predetermined width in the sliding direction that slides by engaging in grooves formed between adjacent tops on the intake surface side of the filter. In a vacuum cleaner, a pair of dust removers each having a comb-like dust remover are connected and spaced apart from each other in the direction of the groove of the filter intake surface.
The distance from the end position of one side of one dust remover at the end of sliding to the end position of the other side of the other dust remover at the end of slide is L, and the slide movement range of each dust remover is l ₁ , l ₂ When L
<l ₁ +l ₂ , and the slide movement ranges of the respective dust removers overlap at approximately the middle position of the suction surface.