JPS6340217Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a vacuum cleaner with an improved dust removal mechanism of a filter.

Conventionally, dust removal operations for filters include, for example, rotating and sliding a dust removal spatula against the filter surface, or by striking the filter with an impact member to remove dust adhering to the filter. However, such a dust removal mechanism lacks smoothness in dust removal operation and requires a large rotational force.

This idea was made in order to eliminate the drawbacks of the conventional filters as described above, and it consists of two disc-shaped filter plates with a spacer between them to form a flat air path between them. A plurality of combined filters are rotatably supported on a rotating shaft with gaps between them, and a fixed dust scraping piece is inserted between the filters, so that dust removal can be performed smoothly and with a small rotational force. The purpose is to provide a vacuum cleaner that makes it possible.

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a dust collection side case with a dust disposal handle 2 integrally molded on the upper part, 3 is a front wheel for movement provided at the bottom of this dust collection side case 1, and 4
is an openable front lid that closes the dust disposal opening 1a provided on the front side (left side) of the dust collection side case 1;
It is biased in the opening direction by a torsion spring 5 provided at the top, and normally maintained in the closed state by a locking means 6. Reference numeral 7 indicates a suction port provided on the front cover 4 to which a suction hose (not shown) can be freely attached and detached; 8 indicates an exhaust port through which air sucked from the suction port 7 passes through the case 1 and is sucked into the case 9 on the main body side; 10 is a latch that removably connects the dust collection side case 1 and the main body side case 9.

Reference numeral 11 denotes a bearing plate having a vent 11a supported on the exhaust port 8 side of the dust collecting side case 1 through a packing 12, and 13 indicates a bearing plate extending horizontally from the suction port 7 to the exhaust port 8 of the dust collecting side case 1. The rotating shaft 14 is rotatably supported by the bearing plate 11, and 14 is a filter for removing dust.As shown in FIGS. 2 and 3, the filter 14 is composed of two disk-shaped filter plates 15a. , 15b are the spacing members 16a, 16b
A flat air passage 17 is formed at the outer periphery between both filter plates. The filter 14 has an annular protrusion engaging member 18a and a concave engaging member 18b provided on both sides, which are fitted into each other, so that the triple multi-stage filter 14 is connected perpendicularly to the rotating shaft 13. At the same time, there is a rotating shaft 13 passing through the center of these filters 14.
The protrusion engaging member 1 of the front filter 14 is attached to the engaging portion 19a of the disc portion 19 provided at the tip (left end) of the
8a, and on the other hand, the recess engaging member 18b of the rear filter 14 is supported by an intervening plate 21 provided via a packing 20 that abuts the bearing plate 11.

A comb-shaped dust scraping piece 22 protrudes from a fixed arm 23 attached to the bearing plate 11 and is deeply inserted between the filters 14, 14 from below.
4 is freely inserted into the rotating shaft 13, and the bearing plate 1
A dust remover made of an elastic body protrudes from a guide pipe 25 supported by the guide pipe 1 between the filter plates 15a and 15b, and the tip of the dust remover 24 is provided on the inner peripheral side of the spacing member 16a or 16b. The pin 26 can be hit.

Reference numeral 27 denotes a gear fixed to the rotating shaft 13 protruding toward the main body side case 9, and is provided with a manual knob 28. A transmission gear 29 meshes with the gear 27, and the transmission gear 29 can be directly connected to a cord reel (not shown). Reference numeral 30 denotes a bottomed cylindrical filter body disposed in front of the filter 14. The peripheral surface of this body 30 serves as a coarse garbage filter basket 31, and the opening edge of the body 30 is connected to the dust collection side case 1. It is detachably supported by the attachment part 32. 33 is a dust removal spatula slidably provided on the inner surface of the filter basket 31;
A transmission plate 35 is attached to the back surface of the rotary plate 34 of No. 3 by penetrating the bottom of the filter body 30.
5 is engaged with a disc portion 19 at the tip of the rotating shaft 13.

Next, the operation of the vacuum cleaner configured as described above will be explained.

First, to explain the dust collection operation, the air sucked in from the suction port 7 along with the dust flows into the filter body 3.
The filter basket 31 flows into the filter basket 31 while rotating, and relatively large coarse debris adheres to the inner surface of the filter basket 31 and is collected. On the other hand, the fine dust that has passed through the filter basket 31 flows into the dust collection side case 1 together with the air.
Air passes through filter plates 15a and 15b of each disc-shaped filter 14. Here, fine dust in the air adheres to the surfaces of the filter plates 15a and 15b and is collected. The dust-free air that has passed through the filter plate is guided through the flat air passage 17 of the filter 14 through the vent 11a of the bearing plate 11 to the main body case 9, and is discharged to the outside.

Next, the function of removing dust attached to the filter 14 and the filter basket 31 will be explained. First, the latch 10 is removed to separate the dust collection side case 1 from the main body side case 9, and the gear 27 is rotated by grasping the knob 28. Rotation of the gear 27 causes the rotation shaft 13
At the same time, the filter 14 rotates, whereby the dust adhering to the surfaces of the filter plates 15a and 15b is scraped off by the fixed dust scraping piece 22, and the rotation of the filter 14 also causes the dust attached to the surfaces of the filter plates 15a and 15b to be scraped off. Since the pin 26 protruding from the spacing member 16a or 16b of the filter 15b is struck by the dust remover 24, dust adhering to the filter 14 falls due to vibration and is collected on the inner bottom of the case 1. On the other hand, since the rotation of the rotating shaft 13 rotates the spatula 33 from the disc portion 19 via the transmission plate 35, the coarse dirt adhering to the filter basket 31 is scraped off by the spatula 33. Thus, the dust removal operation is performed by removing the locking means 6, opening the front cover 4, and then tilting the dust collection side case 1, and the dust inside the case and the dust inside the filter basket 31 are discharged to the outside.

In particular, the vacuum cleaner of this invention has a mechanism in which the rotary shaft 13 is rotated to directly rotate the filter 14 to remove dust adhering to the filter plates 15a and 15b with the fixed scraping piece 22.
The dust removal operation can be performed smoothly, and the filter 14
requires a small rotational force. Furthermore, filter 14,
By inserting the scraping piece 22 from below between the filter plates 14 and 14, there is an advantage that the removed dust falls immediately and therefore does not adhere to the filter plates 15a and 15b again.

Note that the filter 14 is connected to the engaging members 18a, 18
b are connected by fitting, the number of filters 14 can be increased or decreased, and thereby the filter area can be changed depending on the type of dust. In addition to rotating the gear 27 manually, the dust removal operation can be performed by connecting a cord reel to the transmission gear 29, so that the gear 27 can be rotated from the transmission gear 29 when pulling out or retracting the power cord. That may be the case.

As described above, according to this invention, a plurality of filters in which two disc-shaped filter plates are combined via a spacing member so as to form a flat air passage between the filter plates are mounted on a rotating shaft with a plurality of filters spaced apart from each other. Since the filters are rotatably supported and a fixed scraping piece is inserted between the filters from below, the dust attached to the filters can be removed smoothly, and the filters can be rotated with a small rotational force. Further, the dust adhering to the filter can be easily removed, and since the dust removal is always performed at the bottom of the filter, there is an effect that the dust does not re-adhere after being removed to the filter.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a vacuum cleaner showing an embodiment of this invention, FIG. 2 is an inner view of the filter, and FIG. 3 is an external view of the filter. 1...Dust collection side case, 4...Front lid, 7...Suction port, 8...Exhaust port, 9...Main body side case, 13...
...Rotating shaft, 14...Filter, 15a, 15b
... Filter plate, 16a, 16b ... Spacing member, 17 ... Flat air path, 22 ... Fixed scraping piece, 24 ... Dust remover. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] A vacuum cleaner that has a dust collection case with a dust disposal opening closed by a front lid that can be opened and closed on the suction port side to which the suction hose is connected, and a filter is provided in the air passage inside the dust collection case. In this method, the above-mentioned filter is constructed by combining two disc-shaped filter plates via a spacing member so as to form a flat air passage between the filter plates, and a plurality of filters are connected in a multi-stage manner. A vacuum cleaner, which is rotatable by being supported by a rotating shaft, and a fixed scraping piece is inserted between the filters from below.