JP2548112Y2 - Filter element for air cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a filter element of an air cleaner, and more particularly to a filter element applied to an internal combustion engine.

[Conventional technology]

2. Description of the Related Art An air cleaner used in an internal combustion engine is attached to an air intake port of a carburetor to remove dust contained in air to be taken.

The air cleaner generally has a structure in which a cartridge-type filter element formed by bending a filter paper is mounted in a metal air cleaner case.

Next, two typical conventional air cleaners will be described with reference to FIGS. 7 and 8. FIG.

As shown in FIG. 7, the air cleaner 41 includes a plurality of filter elements folded in a mountain shape and a cylindrical element 43 housed in an air cleaner case 42. The air is sucked into the air cleaner case 42 from the inlet 42i, flows along the inner peripheral surface of the air cleaner case 42, and flows into the inner peripheral side from the outer peripheral side of the cylindrical element 43. At this time, the air is filtered by the element 43. Only the clean air from which dust has been removed is discharged from the outlet 42o.

The air cleaner 51 is, as shown in FIG.
An air cleaner case 52 is formed by storing a number of filter elements folded in a mountain shape into a flat plate-like element 53, and air as a fluid to be filtered is sucked into the air cleaner case 52 from an inlet 52i. At this time, air is filtered by the element 53 and only clean air from which dust has been removed is discharged from the outlet 52o.

[Problems to be solved by the invention]

FIG. 9 shows an example of the above-described filter element for an air cleaner. This element 1 is provided with cylindrical portions 3 and 4 formed of resin or the like inside and outside an element piece 2 having a concentric mountain-shaped fold structure. However, in such a configuration, it takes time to form the element pieces 2 and the rigidity tends to be insufficient because the inner and outer cylindrical portions 3 and 4 are separated by the element pieces 2.

[Means for solving the problem]

Therefore, in the present invention, a plurality of filter papers (24) bent in a large number of mountain shapes are formed by folding ridges (25).
Are arranged side by side in the circumferential direction of the filter element to be formed while being aligned in a direction parallel to the radial lines (r1, r2, r3) extending from the center of the filter element to be formed. The above-mentioned problem is solved by a filter element for an air cleaner characterized in that the side edges (24a) and the inner and outer ends (24b, 24c) are connected to each other by a resin.

[Action]

According to the present invention, the side edge (24) of the adjacent filter paper unit (24)
a) The filter paper alone (2
The resin materials filled in the inner and outer ends (24b, 24c) of 4) are also connected to each other.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

As shown in FIGS. 1 to 3, the filter element 21 of this embodiment includes a plurality of filter papers 24 and a filter paper 24.
Are made of a resin material that connects the side edges of each other, and the outer shape is formed in a circular shape. And the filter paper unit 24 is the second
As shown in the figure, a sheet-shaped filter paper is previously bent into a number of mountain shapes from one side to the other side by corrugation, and the outer peripheral portion thereof is cut by pressing to form a predetermined shape (FIG. 2). In this embodiment, the shape is fan-shaped.

Then, each of the filter papers 24 processed as described above is inserted into a mold, and a resin (polyethylene or polypropylene or the like) is poured into the mold, so that the adjacent filter papers 24 are adjacent to each other.
The side edges 24a and the inner and outer ends 24b and 24c of the air cleaner are connected to each other by a resin material, and the outer cylinder 4 of the air cleaner is formed by the resin material.
Are integrally formed. Then, as shown in FIG. 3, the suction side air pipe 5 communicating with the air inlet and the discharge side air pipe 6 communicating with the vaporizer are connected to the air cleaner formed as described above. You. At this time, the outer cylinder 4 is exposed to the outside.

The air pipes 5 and 6 have a funnel shape in a portion adjacent to the outer cylinder 4, and the R portion is formed with substantially the same curvature as the natural streamline of the fluid. The funnel-shaped portion is not formed coaxially with the element, but may be formed eccentrically as shown in FIGS. 5 and 6.

When connecting each filter paper unit 24 with a resin material, each filter paper unit 24 is on or parallel to the radius line r extending from the center of the element 23 where the bent ridgeline 25 of each filter paper unit 24 is to be formed. To be placed. That is, in the embodiment of FIG. 1, the three filter papers 24 are arranged such that the bent ridgeline 25 of the filter paper 24 is parallel to the radius lines r1, r2, r3 or parallel to the radius lines r1, r2, r3. Have been.

The air cleaner shown in FIG. 4 is a modified example of FIGS. 1 to 3, in which the filter element 31 is formed in a conical shape. The plan view of the element 31 is exactly the same as that of FIG. 1, and the air pipes 5 and 6 are completely the same as those described above.

Although the air cleaner and the air pipe are coaxial in the embodiment shown in FIGS. 1 to 4, they need not be coaxial.

[Effect of the invention]

As described above, according to the present invention, a plurality of filter papers are arranged in the circumferential direction and are connected to each other by a resin material. Filter paper alone can be easily manufactured. Since the resin materials at the inner and outer edges of the filter paper unit are connected to each other by the resin material joining the side edges of the filter paper unit, the rigidity of the element can be improved.

[Brief description of the drawings]

1 is a plan view of a filter element for an air cleaner according to the present invention, FIG. 2 is a perspective view of a filter paper alone of the filter element, FIG. 3 is a cross-sectional view when an air pipe is connected, and FIG. FIG. 5 shows a modification of the filter element shown in FIG. 5, FIG. 5 shows a modification of FIG. 3, and FIG.
7 is a cross-sectional view of a conventional air cleaner, FIG. 8 is a cross-sectional view of another conventional air cleaner, and FIG. 9 is an example of a conventional filter element. It is a perspective view. 21, 23: Filter element, 24: Filter paper alone, 24a
…… Side edge of filter paper alone, 24b …… Inner end of filter paper alone, 24c ……
The outer edge of the filter paper alone, 25 ... bent ridge.

Claims (1)

(57) [Scope of request for utility model registration] A plurality of filter papers, each of which is formed in a shape of a plurality of peaks, are arranged in such a state that their bent ridge lines are aligned in a direction parallel to a radius line extending from the center of a filter element to be formed. An air cleaner filter element, wherein filter elements to be formed are provided side by side in the circumferential direction, and side edges and inner and outer ends of the filter papers are connected to each other by a resin.