JPS6329531B2 - - 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 the filter has comb teeth that slide by engaging in a groove formed between adjacent tops on the intake surface side of the filter. A structure is known in which a sliding dust removing body is provided with a dust removing element having the shape of a dust remover.

Such a sliding dust removing body is connected to a rack which is always under tension in one direction by a spring, and the rack is connected to the spring by rotating a disk having teeth on a part of its outer circumference that mesh with the teeth of the rack. The rack is slid in one direction by moving it in the other direction against the tensile force of the disc, and when the rack and the disc are no longer engaged, the rack is slid in the other direction by moving to return to its original position. The configuration is as follows.

However, since the conventional dust removal structure on the intake side of the filter is configured by simply moving the comb-like dust remover in the groove, the dust attached to the intake side may be left behind, and the dust removal effect is shortened. It was hot.

Therefore, in view of the above-mentioned conventional circumstances, the present invention improves the structure of the drive section of the comb-shaped dust remover, and after the dust remover moves toward one end of the groove, the dust remover The present invention provides an electric field remover that is configured to move the filter slightly up and down, thereby applying slight vibrations to the filter and effectively removing dust.

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 vertical center of the frame 9 has a sliding wall 11, and a drive bearing 12 is provided in the middle of this sliding wall, and guide grooves 13, 13 are provided above and below this bearing.
is 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; 14b is the top of the main filter 14 on the intake surface side, and 14b is the valley 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 sliding dust removing body having a frame body, which has protrusions 21, 21 at the center of the upper and lower horizontal frames 20, 20 to be engaged in the guide grooves 13, 13 of the sliding wall 11. The vertical frames 20a, 20a have tongue pieces 22, 22 on both upper and lower sides thereof that engage in the elongated holes 18, 18. Further, the upper and lower horizontal frames 20 each have protrusions 2.
Comb-shaped dust removers 23, . .

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 a spring 26 as an elastic member is fixed to the spring 26, and the other end of the spring is fixed to a pin 27 of the intermediate member 15. Note that one end of the spring 26 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 disc 32 as a rotating body is formed on the intake side at the front end of the drive shaft 28.
A gear 33 that meshes with the rack 24 is provided on a part of the outer periphery of this disc. The number of teeth of this gear 33 is slightly larger than the number of teeth of the rack 24.

Further, the front surface of the disc 32 has a connecting piece 34,
A pre-dust remover 36 is connected to this connecting piece 34 by a connecting member 35. The prefilter device 8 is attached to cover the main filter device 7, and the front surface of the prefilter device 8 is supported by a frame 38 with a net 37. And this net 37
The pre-dust remover 36 can be rotated and slidably contacted with the suction surface of the dust remover 36.

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. In both cases, dust can be easily removed, and the tip of the dust remover 23 does not become weak, thereby eliminating the possibility of damage.

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.

Also, comb-shaped dust removers 23 on the upper and lower horizontal frames 20
is the main filter 14 on mutually opposing surfaces.
are each formed in a shape with an inclined surface 23A such that the width in the groove direction on the intake surface side becomes wider from the base to the tip, and when the sliding dust removing body 19 is raised, the lower side The dust remover 23 of the frame 20 can move the dust in the valley 14b located approximately in the lower half of the intake surface side of the main filter 14 toward the top 14a, and when the sliding dust remover 19 is lowered, the dust in the upper part The dust remover 23 of the horizontal frame 20 can move the dust in the valley 14b located approximately in the upper half on the intake surface side toward the top 14a, thereby removing the dust adhering to the valley 14b. can be removed smoothly and reliably.

In addition, since dust does not remain in the valley 14b,
The sliding movement force of the dust remover 23 is small, and
Due to the configuration in which the inclined surfaces 23A are provided on the opposing end surfaces of the upper and lower dust removers 23, the lowest point when the upper dust remover 23 slides and the highest point when the lower dust remover 23 slides overlap. Therefore, the dust attached to the substantially middle portion of the intake surface of the main filter 14 can be reliably removed without remaining.

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,... slide on the intake surface of the main filter 14 to remove dust attached thereto. Thereafter, when the dust removers 23, . For this reason, the main filter 14
vibrates to ensure more reliable dust removal. In addition, 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 the vacuum cleaner with such a configuration, Rack 24
By forming the number of teeth of the gear 33 that meshes with the rack 24 to be greater than the number of teeth of the rack 24, when the dust remover 23 finishes descending as shown in FIG.
When there are no teeth that should mesh with the teeth of gear 33,
The topmost tooth of rack 24 will be struck by the remaining teeth of gear 33 by the number of teeth remaining. In this way, when the uppermost tooth of the rack 24 is hit, the rack 24 is pulled up and down by the spring 27, so it continuously moves slightly up and down, and this slight up and down movement causes the rack 24, The vibration is transmitted to the comb-like dust remover 23 via the frame 9, thereby continuously imparting micro vibrations to the main filter 14. Therefore, the dust removal action of the main filter 14 can be performed more reliably.

Further, by applying the slight vibration to the main filter 14 in this way, the frame 38 of the pre-filter device 8 is slightly vibrated, thereby moving the dust accumulated at the bottom of the frame 38 in the forward direction. This prevents dust from accumulating below the main filter device 7, prevents dust falling from the main filter 14 from becoming stagnant, and allows effective dust removal.

As explained above, according to the present invention, the comb-shaped dust remover, which is slid and inserted into the groove on the intake surface side of the bellows-shaped filter, is continuously moved slightly upward and downward. By applying continuous micro-vibration to the filter, dust adhering to the filter can be dropped, thereby improving the dust removal effect.

[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.
FIG. 5 is a perspective view of the main filter, FIG. 5 is a perspective view of the intermediate member, and FIG. 6 is an exploded perspective view of the dust remover and its operating members. 1...Vacuum cleaner case, 6...Electric blower, 9...
... Frame body, 13 ... Guide groove, 14 ... Main filter, 14a ... Top part, 19 ... Sliding dust removal body,
21... Projection, 23... Dust remover, 24... Rack, 26... Spring, 32... Disc, 33...
…gear.

Claims (1)

[Claims] 1. A vacuum cleaner case is equipped with an electric blower and a bellows-shaped filter, and the filter has a comb-shaped dust remover that slides into grooves formed between adjacent tops on the intake surface side of the filter. A vacuum cleaner comprising a sliding dust remover having a sliding dust remover includes a rack connected to the sliding dust remover and always under tension in one direction by an elastic member, and a gear meshing with the rack. A vacuum cleaner characterized by comprising: a rotating body having a gear having a larger number of teeth than the rotating body on a part of its outer periphery.