JPS582269Y2 - Vacuum cleaner dust removal device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a dust removal device for a vacuum cleaner.

In conventional vacuum cleaners, a pre-filter is placed in front of the filter to capture coarse dust, but this pre-filter is generally equipped with a means for removing attached dust. It is normal that it is not.

Therefore, the coarse dust captured by the pre-filter adheres to the surface of the pre-filter in a compressed state, which increases the ventilation resistance and reduces the dust-absorbing ability, so the filter device is removed from the bottom container. Dust adhering to the pre-filter surface had to be knocked off or removed by hand.

The present invention provides a dust removal device that effectively removes dust adhering to the pre-filter surface, eliminates the above-mentioned complicated dust removal work, and maintains high dust-absorbing ability over a long period of time. The purpose is to prevent warpage and deformation, which are the above problems, and one embodiment thereof will be described below based on the drawings.

In Figures 1 and 2, 1 is a vacuum cleaner main body (hereinafter referred to as the main body), 2 is an electric blower built into the main body 1, 3 is a rear wheel, 4 is a front wheel, and 5 is a bottom seat container connected to the main body 1. , 5a
1 is a connection port for connecting a hose (not shown), 6 is a handle for transporting the bottom container 5, 7 is a buckle for attaching and detaching the bottom container 5 from the main body 1, and 8 is an air-tight connection between the bottom container 5 and the main body 1. A support frame that supports the tight fitting rubber 9, and the support frame 8 includes a front frame body 10 that makes the front surface of the main filter 10 impermeable.
a bearing 8 that supports the rotating shaft 10b integrally formed with the rotating shaft 10b;
A is in great shape.

8b is a ventilation hole formed in the support frame 8; 11 is a rotating shaft 10;
A gear that can manually rotate the main filter 10 attached to the other end of b; 12 is a cord reel (not shown);
A gear 15 meshes with a clutch 13 linked to the rotation and transmits its driving force to the gear 11, and a dust removing body repels the folds of a main filter 10 fixed to a bearing 8a.

Reference numeral 16 denotes a dust-tight backing, which is press-fitted onto the outer periphery of a rib 10d that integrally projects from the rear frame 10C of the main filter 10, and is rotatably pressed against the support frame 8 to maintain airtightness.

17 is a pre-filter that separates coarse dirt from fine dust.

Further, the outer periphery of the pre-filter 17 is in contact with a dirt-tight packing 19 attached to the filter cover 18 to prevent dirt from entering the main filter 10 side.

The pre-filter 17 is the main filter 10.
The main filter 10 is fixed to the frame 10a and rotates together with the main filter 10.

5C is a bottom seat chamber located in front of the pre-filter 17.

Further, as shown in FIG. 2, the main filter 10 has a large number of circular folds, and the dust removing body 15 is configured to strike the lower part of the main filter 10.

Further, as shown in FIG. 3, the spokes 17b for supporting the pre-filter outer periphery 17C are provided with ribs 17a for preventing this deformation and warping.
is in contact with the frame 10a of the filter 10.

In the above configuration, the gear 11 rotates when the cord is pulled and the cord reel is rotated, or by removing the bottom seat box 5 from the main body 1 and rotating the gear 11 by hand.
The main filter 10 rotates and at the same time the pre-filter
17 also rotates.

As a result, the garbage that increases the ventilation resistance of the pre-filter 17 does not move due to the frictional resistance with the wall surface of the crotch container 5, and only the pre-filter 17 rotates.

For this reason, the garbage that has been blocking the mesh of the pre-filter 17 is removed in a peeled state, so that it is easily removed when the garbage is thrown away, and the catching surface of the pre-filter 17 is cleanly removed.

Further, when the fine dust stuck around the entire circumference of the main filter 10 comes to the lower part, the main filter 10 is struck by the dust remover 15 to cause the fine dust to separate from the main filter 10 and fall.

Furthermore, the ribs 17a provided on the spokes 17b serve to prevent warping deformation that occurs when insert molding the pre-filter net H7d or when applying heat to the pre-filter net H7d to remove slack from the net.

On the other hand, slight warpage and deformation that cannot be prevented can be corrected and eliminated by the rib 17a fixedly abutting against the front frame 10a of the main filter 10.

Therefore, when the pre-filter 17 is deformed during molding, during heat treatment of the mesh, or during long-term use, a gap is created between the pre-filter 17 and the dirt-tight packing 19, and the dirt is transferred to the main filter.
You can eliminate worries about getting into the 10th grade.

Furthermore, since the front frame 10a is impermeable, the airflow is sucked in from the periphery of the pre-filter 17 as shown in FIG. During operation of the vacuum cleaner, cotton dust adheres to the cord of the pre-filter 17, and a swirling flow also occurs around the outer periphery of the filter cover 18. Due to the swirling flow, dust adheres to the outer periphery of the filter cover 18 due to static electricity. It can also be expected to have the effect of removing.

As described above, according to the present invention, there is no need for garbage to get caught in the pre-filter, and there is no need for unsanitary work such as spilling garbage on the floor or removing garbage from the pre-filter by hand when disposing of garbage. , Also, pre-filter after every cleaning.
Those that rotate have the effect of always being able to clean with high performance (high air volume).

Furthermore, in the case of the present invention, ribs are provided radially on the pre-filter and are fixed to the end face of the main filter, so there is no gap caused by deformation of the pre-filter. , it is possible to perform a reliable dust collection operation.

[Brief explanation of drawings]

Fig. 1 is a cutaway side view of main parts of a vacuum cleaner according to an embodiment of the present invention, Fig. 2 is an exploded perspective view of a filter device, and Fig. 3
The figure is a rear perspective view of the pre-filter, and FIG. 4 is a perspective view showing the state of garbage attached to a conventional filter device. 5C...Bottom chamber, 10...Main filter, 17...Prefilter 117a...
··rib.

Claims (1)

[Scope of utility model registration request] A substantially disc-shaped pre-filter having a net for capturing coarse dust is disposed between the bottom seat chamber and a substantially cylindrical main filter that captures fine dust, and the pre-filter and the main filter are connected to each other. The pre-filter and the main filter are fixed to each other so that they rotate together, and a plurality of radial ribs are provided on the main filter side surface of the pre-filter so as to be in contact with one side frame of the main filter. 2. A dust removal device for a vacuum cleaner, characterized in that the outer periphery of the pre-filter is brought into contact with an opening of a filter cover surrounding the main filter via a gasket.