JPS5849413Y2 - Air cleaner casing sealing device - Google Patents

Description

[Detailed description of the invention] The invention relates to an air cleaner installed in an internal combustion engine.
In particular, the present invention relates to a casing sealing device suitable for accommodating a rectangular filter body.

FIG. 1 is a cross-sectional view of a main part of a conventional air cleaner that houses a square filter body 9'.
' is combined with the sealing function of the filter body 9' and the sealing function of the connecting part between the case 12' constituting the casing and the cap 14'.

In this type, the ζ packing 710' is provided at a portion away from the integrally formed part, that is, on the outer peripheral wall 2', in order to prevent the packing 10' from peeling off from the filter body 9' due to compressive deformation.
The connection is sealed by compressing the vicinity.

Therefore, the packing 10' is deflected toward the inner circumferential wall 3', and
If too much load is applied to the cover 710', the packing 10' may separate from the filter body 9', or the case 12' and camp 1 may become separated.
This has the disadvantage that the sealing function at the connection part 4' is reduced.

This invention was made to solve the above-mentioned drawbacks, and the outer circumferential wall of the case is placed against the groove of the camp, and the inner circumferential wall supports the mounting surface of the packing to prevent unnecessary loads from being applied to the packing. An embodiment thereof will be described below with reference to FIG.

Reference numeral 16 denotes an air cleaner, the casing of which is composed of a synthetic resin case 12 and a cap 14, the square case 12 having an air outlet 17, and an outer periphery in which a groove 1 having a substantially U-shaped cross section is formed around the entire circumference of the opening end. A wall 2 and an inner peripheral wall 3 are provided,
The end portion 4 of the outer circumferential wall 2 is placed against a back wall 8, which will be described later, and the inner circumferential wall 3 is provided inside of an inner circumferential wall 6, which will be described later.

Reference numeral 14 denotes a cap having an air intake port 18, and a groove 1 having a substantially U-shaped cross section formed by an outer circumferential wall 5 and an inner circumferential wall 6 that fit with the groove 1 is provided around the entire circumference of the opening end.

9 is a filter body, which has a top part 19 and a bottom part 20 of folded paper.
It is formed into a square shape by alternating the shapes.

Reference numeral 10 denotes a packing having a mounting surface 11, which is integrally provided on the peripheral edge of the filter body 9, the mounting surface 11 is supported by the inner peripheral wall 3, and the outer peripheral portion of the packing 10 is located within the groove 1.

Figure 3 is an enlarged view of the main part A in Figure 2, and shows case 12.
By attaching and detaching the cap 14, for example, by tightening a clip, the outer peripheral wall 2 is fitted into the groove 7, and the end portion 4 is brought into contact with the inner wall 8.

At this time, the inner circumferential wall 6, which is formed to have a smaller height than the outer circumferential wall 2 which is close to the groove 1, is in a position where the packing 10 is compressed to exert the best elastic force.

At the same time as pressing the packing 10 into the groove 1, the mounting surface 11
is formed to have a smaller height than the outer circumferential wall 2 of the case 12 and is pressed against the inner circumferential wall 3.

As a result, the packing 10 is not overly compressed and is therefore always used within its elastic limit, ensuring reliable sealing over a long period of time.

Further, since the mounting surface 11 is supported by the inner peripheral wall 3 and the packing 10 is prevented from protruding from the groove 1, the elastic force is made even more effective.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the main parts of a conventional air cleaner. FIG. 2 is a partial sectional view of the air cleaner according to the present invention. FIG. 3 is an enlarged view showing the main part A of FIG. 2. 1.7...Groove, 2,5...Outer peripheral wall, 3
, 6... Inner peripheral wall, 4... End, 8...
・・・Back wall, 9...Successful body, 10...
・Putkin, 11...Placement surface.

Claims (1)

[Scope of utility model registration request] In an air cleaner in which the casing for accommodating a square filter body is made of a synthetic resin case and camp, an outer peripheral wall 2 forms a groove 1 having a substantially U-shaped cross section around the entire opening end of the case 12.
and an inner circumferential wall 3, and an end portion 4 of the outer circumferential wall 2 is provided with a cap 1.
The cross section provided around the entire circumference of the opening end of the case 12 is applied to the inner wall 8 of the groove 7 formed by the outer circumferential wall 5 and the inner circumferential wall 6, which are substantially U-shaped, and has a height smaller than that of the outer circumferential wall 2 of the case 12. The inner peripheral wall 6 of the molded cap 14 is connected to the packing 1 provided on the filter body 9.
0 is pressed into the groove 1 of the case 12, and the inner peripheral wall 3 formed to have a smaller height than the outer peripheral wall 2 of the case 12 supports the mounting surface 11 of the packing 10. .