JPS5832726A - Dust removing apparatus 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 The present invention relates to a dust removal structure for a filter device in a vacuum cleaner, and an object of the present invention is to provide an inexpensive structure that allows easy maintenance of a secondary filter that collects fine dust.

In conventional vacuum cleaners, a roughly cylindrical secondary filter is rotated to remove coarse dust, and a part of the filter is also rotated at the same time to remove coarse dust. Because it was fixed with screws or the like, even if the secondary filter became clogged with fine dust and the performance deteriorated, it was difficult to easily remove the secondary filter, resulting in a structure that was difficult to maintain. In particular, it is difficult to develop an inexpensive method under the conditions that the -order filter is detachable and the secondary filter and some filters rotate at the same time. It provides a new type of attachment/detachment configuration that takes advantage of the characteristics of the material used for the filter.

Examples thereof will be described below with reference to the accompanying drawings.

In the figure, reference numeral 1 denotes a main body containing an electric blower 2, to which a dust collection box 3 is detachably connected by a buckle device 4. 6 is a handle provided on the dust collection box 3, 6 is an intake port, and 7 is a wheel device. 8 is a partial filter 9. Secondary filter 10. Filter support plate 11. It is a filter device consisting of a driven gear 12 and the like, and is detachably attached to the dust collection box 3. A filter frame bracket 13 is provided on the outer periphery of the filter support plate 11.
is attached to the inner periphery of the dust collection box 3 and the wall of the main body 1 to maintain airtightness. Fill-coo support plate 1
A bearing 14 is formed approximately in the center of the main body 1, and a gear shaft 16 supports the driven gear 12 rotatably. It is slidably fitted into the driven gear 12 and is biased by a spring body 17 to mesh with the driven gear 12. The secondary filter 1° consists of a filter medium part 18 held by a frame body 19 made of synthetic resin, and its central fixing part 2o and driven gear 12 are fixed with screws 21 and nuts 22, and are attached to the filter support plate 11. It makes the same possible.

Reference numeral 23 denotes a filter contact plate fixed to the secondary filter 10, and a gasket 23 that is brought into elastic contact with the filter support plate 11.
a to prevent dust from leaking into the electric blower 2gAI.

9 layers of filters Consisting of a mesh portion 24 for collecting coarse dust and a secondary filter frame 25, it is formed approximately in the shape of a disk, and a fixed shaft 2 formed in the center protrudes toward the secondary filter 10 side.
6, a knob 27 protruding toward the coarse dust collecting side, and four knob housing parts 28. The fixed shaft 26 of the secondary filter 9 is formed with a plurality of outward locking claws, which can be attached to and removed from a locking groove 30a of a fixed bearing 30 provided approximately at the center of the secondary filter 1o. It can be locked freely.

Rotation stop grooves 31 are formed at four locations in the fixed bearing 3Q that is cut deeper than the locking groove 30a, and a reinforcing lip 32 is provided between the rotation stop grooves 31, and is integrated with the above-mentioned second filter 9. and the tip portion 26 of the fixed shaft 26
A rotation stopper rib 33 formed lower than a is fitted into the rotation groove 31 to further transmit the rotational force of the secondary filter 10 to the filter 9. The rotating shaft 26 of the secondary filter 9 and the fixed bearing 3o of the secondary filter 10 are detachable, and the retaining force of the rotating shaft 26 is obtained by exerting the elastic force of the resin through the locking groove 31 of the fixed bearing 3o. ing.

The secondary filter 10 has radially formed peaks of the filter medium 18 and an inner cylinder cavity 34 to make the filter medium 18 easy to bend and remove dust.
This facilitates the formation of the filter 9 and the storage of the second filter 9 in the knob recess 28.

Furthermore, the -order filter 9 and the secondary filter 1o are fixed only by the fixed shaft 26 and the fixed bearing 30, and the -order filter 9 is allowed to flex toward the secondary filter 10 around the fixed shaft 26. A gap a is provided between the secondary filter 1o and the secondary filter 1o.

Reference numeral 36 denotes a dust removing rib provided inside the dust collection box 3, which has the function of scraping off coarse dust adhering to the secondary filter 9 by bringing it into contact with the secondary filter 9. Numeral 36 is a partial filter fitting for preventing the intrusion of coarse dust, which is slidable on the outer periphery of the secondary filter 9 and is fixed to the grooved filter frame 37. 38 is a dust spring, which is attached to the filter support plate 1.
It is fixed to a spring fixed shaft 39 provided at 1, and vibrates the secondary filter 10 to remove dust.

In the above-mentioned embodiment, since the secondary filter 10 has a frame 19 made of an elastic material, the fixed bearing 30 is provided with the locking groove 30a, and the fixed bearing 30 is divided into several parts by the rotation stopper groove 31. This further increases the elasticity of the fixed bearing 3o, making it easier to attach and detach the fixed shaft 26 of the secondary filter 9.

Furthermore, a reinforcing lip 32 is provided in the rotation stopper groove 31, and the rotation stopper lip 33 of the secondary filter 9 is fitted into the reinforcing lip 32, so that reliable rotation can be achieved.

As described above, according to the present invention, the elastic force of the synthetic resin is applied to make it easier to attach and detach the filter, and the rotational force is transmitted to the next filter in the same part.
This has the effect of providing a device that is inexpensive and has excellent usability.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway side view of a vacuum cleaner showing an embodiment of the present invention, Fig. 2 is a sectional view of a fixed bearing formed in a secondary filter, and Fig. 3 is a cross-sectional view of a fixed bearing formed in a secondary filter. 4 is a perspective view of the primary filter, FIG. 5 is a perspective view of the secondary filter, and FIG. 6 is a perspective view of the fixed shaft portion formed on the primary filter. 3 Dust collection box, 8... Filter device, 9...
-order filter, 10 -second order filter, 18...
・Filter media part, 19...Frame body, 26...Fixed shaft, 2
9 ・Latching claw, 30 ・・Fixed bearing, 30 a・・
・Latching groove, 31... ・Rotation stop groove, 32 ・Reinforcement lip, 33 ・Rotation stop lip. Name of agent: Patent attorney Toshio Nakao and 1 other person'@
Figure 2 Figure 3 Figure 7 Figure 5 1 2 Figure 6 = 124-

Claims (1)

[Claims] The filter device detachably attached to the dust collection box consists of a partial filter for capturing coarse dust and a rotatable secondary filter for capturing fine dust. The secondary filter is inserted into a fixed bearing to connect the two filters in a separable manner, and the secondary filter has a radial anti-rotation rib and a locking pawl formed on the fixed shaft, while the secondary filter has a substantially cylindrical shape. The material part is supported by a frame made of elastic synthetic resin, and the fixed bearing is integrally formed with the frame, and the locking pawl of the fixed shaft is locked to the fixed bearing. A locking groove, an axial rotation locking groove that reaches a deeper position than the locking groove and into which the rotation locking rib of the next filter is fitted, and a reinforcing rib that protrudes outward from the vicinity of the rotation locking groove. A dust removal device for a vacuum cleaner.