JPS59135043A - Dust removing device of electric cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a dust removal device for a vacuum cleaner.

Conventional structure and its problems Conventional vacuum cleaner dust removal devices remove fine dust trapped in the secondary filter and difficult-to-remove cotton dust that has entered the grooves of the secondary filter, which has a cylindrical wave-shaped cross section. To do this, the secondary filter had to be removed from the dust collection case and manually scraped off using a pin or the like, which was not easy to use and also had the disadvantage that the filter could be torn. Furthermore, it was unsanitary because the secondary filter had to be removed to remove fine dust and cotton waste.

OBJECTS OF THE INVENTION The present invention eliminates these conventional drawbacks and ensures reliable dust removal from a secondary filter having a cylindrical wave-shaped cross section.

Structure of the Invention In order to achieve the above-mentioned object, the vacuum cleaner seat removal device of the present invention comprises a primary filter for capturing coarse dust and a cross section for capturing fine dust, which rotate in conjunction with a rotational drive source such as a cord winding device. A secondary filter having a cylindrical waveform shape, a substantially cylindrical filter case disposed to cover the secondary filter, and a shape along the secondary filter having the cross-sectional waveform shape between the secondary filter and the filter case. a filter frame having a slidable dust removal plate, a sliding protrusion provided perpendicularly to the dust removal plate outside the secondary filter, and an inclined cylindrical rib with which the sliding protrusion comes into contact; The dust removal plate is configured to slide back and forth along the secondary filter.

Therefore, the dust adhering to the secondary filter having a cylindrical wave-shaped cross section, especially the valley grooves thereof, is reliably scraped off by the sliding movement of the dust removal plate.

Description of examples One embodiment will be described below based on FIGS. 1 to 3.

In the figure, 1 is a main case housing an electric blower 2 and a cord winding device 3, and 4 is a dust collection case detachably connected to the main case 1 with a buckle 5. 6 is a primary filter for capturing coarse dust, which is formed in a net shape. 7 is a secondary filter for capturing fine dust, which has a cylindrical waveform cross section. Reference numeral 8 is located between the secondary filter 7 and a substantially cylindrical filter case 9 disposed to cover the secondary filter 7, and is provided with a microscopic filter case 9 along the outer shape of the secondary filter 7, which has a cylindrical waveform cross section. The dust removal plate has a shape that maintains a gap, and has a vertical sliding protrusion 10 on the surface on the main body case 1 side at a position where it does not come into contact with the secondary filter 7.

Reference numeral 11 denotes a filter frame, which integrally has a cylindrical rib 12 with which the dust removal protrusion 10 of the dust removal plate 8 slides. Numeral 13 is a large gear, which is connected to the primary filter with the secondary filter 7 and filter frame 11 in between.

Reference numeral 14 denotes a small gear, which meshes with the crafter 15 and the large gear 13 to transmit the rotational driving force of the cord winding device 3 to the primary filter, the secondary filter 7, and the dust removal plate 8. compression spring 16
The dust removal plate 8 is pushed toward the main body case 1 side, and the sliding protrusion 10 and the cylindrical rib 13 are brought into contact. The cylindrical rib 13 is formed to be inclined with respect to the joining surface of the main body case 1 and the dust collection case 4. When the sliding protrusion 10 contacts the longest position AK of the cylindrical rib 12, the dust removal plate 8 approaches the primary filter, and conversely, when the sliding rib 10 contacts the shortest position B of the cylindrical rib 12, the dust removal plate 8 approaches the main filter. closest to 1. When the sliding rib 10 reaches the position B of the cylindrical rib 12, the dust removal plate 8
and the cylindrical rib 12 are in contact with each other. The rubber packing 17 connects the filter case 9 to the filter frame 11, and also air-tightly connects the dust collection case 3, main body case 1, and filter frame 11 to each other. The rubber gasket A18 tightly seals the secondary filter 7 and the filter frame 11. Also, the rubber gasket B19 is the filter case 9.
And the primary filter is dust tight.

In the above configuration, when the large gear 12 is rotated by the rotational driving force transmitted from the cord winding device 3 or manually, the negative filter and the secondary filter 7 are also rotated because they are coupled to each other. Since the dust removal plate 8 is aligned with the outer shape of the secondary filter 7 having a cylindrical wave-shaped cross section while maintaining a small gap, it rotates as the secondary filter 7 rotates. Further, since the dust removal plate 8 is pushed in the direction of the main body case 1 by the compression spring 16 so that the sliding protrusion 1o is always in contact with the cylindrical rib 12, when the secondary filter 7 rotates, the sliding protrusion 1
Q slides while contacting the cylindrical rib 12, so that the dust removal plate 8 slides back and forth along the secondary filter 7. At this time, fine dust that has passed through the -order filter and been captured by the secondary filter 7, and cotton dust that has entered and adhered to the grooves of the secondary filter 7 are scraped off. Since the dust removal plate 8 cannot be slid back and forth once with one revolution of the secondary filter 11, it is moved back and forth several times by rotating the cord winding device 30.
Fine dust captured by the secondary filter 7.

Scraping off cotton waste has a high dust removal effect. Unfortunately, after pulling out the secondary filter 7 from the dust collection case 4, there is no need to scrape off the attached cotton dust, so it is hygienic and easy to use.

Furthermore, FIG. 4 shows another embodiment, in which a plurality of fitting protrusions 20 shaped to fit into the secondary filter 7 are provided, and a sliding protrusion 1o of the dust removal plate 8 is provided.
By providing the dust removal plate 8 on the same surface as the dust removal plate 8, when the dust removal plate 8 slides back and forth along the secondary mirror 7, the dust removal plate 8 is prevented from tilting, and the back and forth sliding movement is made smooth.

Effects of the Invention According to the present invention, the secondary filter can be collected manually or in conjunction with the rotation of the cord winding device by providing a dust removal plate that scrapes off the dust captured by the secondary filter. This provides the effect of removing dust captured by the secondary filter without removing it from the dust case.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway sectional view of a vacuum cleaner showing an embodiment of the present invention, Fig. 2 is an exploded perspective view of the secondary filter section, Fig. 3a
, b is an explanatory diagram of the operation of the dust removal basin, and FIG. 4 is a perspective view showing another embodiment of the dust removal plate. 3... Cord winding device, 6... -order filter, 7... secondary filter, 8... dust removal plate, 9... Filter case, 10...
・Sliding protrusion, 12...Cylindrical rib, 20...
...Mating protrusion.

Claims (2)

[Claims] (1) A primary filter for capturing coarse dust that rotates in conjunction with a rotary drive source such as a cord winding device, and a secondary filter with a cylindrical wave-shaped cross section for capturing fine dust, which are arranged to cover the secondary filter. a slidable dust removal plate shaped along a substantially cylindrical fin; a sliding protrusion provided perpendicularly to the dust removal plate on the outside of the secondary filter; and an inclined shape where the sliding protrusion contacts. 1. A dust removal device for a vacuum cleaner, characterized in that the dust removal plate has a filter frame having a cylindrical rib, and the dust removal plate reciprocates along the secondary filter. (2) The dust removal device for a vacuum cleaner according to claim 1, wherein the dust removal plate has a plurality of fitting protrusions that are arranged to fit into the sliding protrusion and the secondary filter.