JPS5985472A - Mounting construction of air-cleaner gasket - Google Patents

Abstract

PURPOSE:To securely install a gasket in a casing and improve operation efficiency by forming an under-cut form recessed groove on the gasket mounting area of a casing in advance and filling said recessed groove with a part of said gasket by molding. CONSTITUTION:A metal mold 7 is attached to the edge part of a recessed groove 6a, and a molten soft urethane material which is to be formed into a gasket 5a is poured into a space formed by the recessed groove 6a and the metal mold 7, through a through hole 8a provided on the bottom surface 8 of the recessed groove 6a. After the material for gasket 5a is filled into the recessed groove 6a and the metal mold 7 and molded, the metal mold 7 is removed and, thereby, the gasket 5a is fixed the recessed groove 6a, with a part of it being embedded in the groove.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mounting structure for a gasket provided in an airtight retaining section of an air cleaner.

Generally, air cleaners used in automobiles and the like generally consist of an element for filtering air and a casing that houses the element. By the way, in this type of air cleaner, a gasket is installed in a place where airtightness is safe, such as between the element and the casing.
All the air that has flowed into the casing is passed through the element to complete filtration. Usually, the gasket is formed into an annular shape to match the shape of the element, and is adhered and fixed to the inner surface of the casing with an adhesive or the like.

However, as a recent trend, there has been a trend to reduce the weight and cost of the vehicle by forming the casing from synthetic resins such as P and P (polypropylene); If so, complete adhesion with an adhesive is impossible, and no adhesive can be used. Therefore, when attaching the gasket to the above-mentioned P and P casings, it may be possible to attach it using clips, etc., but in this case, the configuration and installation will be complicated, and the work efficiency during air cleaner assembly will deteriorate. There is a problem in that the cost of the product is forced to increase.

In view of the conventional situation, the present invention has been developed by forming an undercut groove in advance in the gasket mounting part of the casing, and filling this groove with a part of the gasket by molding, thereby attaching the gasket to the casing. To provide a gasket mounting structure for an air cleaner which can be reliably mounted to the air cleaner and improve work efficiency when assembling the air cleaner.

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.

That is, FIG. 1 shows an air cleaner 1 showing one embodiment of the present invention.
This is a cross-sectional view showing the main parts of the casing 2, in which an annular element 3 is housed within the casing 2. The casing 2 is composed of a container-shaped lower case 2a and a lid-shaped upper case 2b,
These lower and upper cases 2a.

A gasket 4 is provided at the joint portion 2b. on the other hand,
The element 3 has an element main body 3a made of filter paper or the like bent into a bellows shape or pleat shape, and an upper element body 3a that is attached to the upper and lower ends of the element main body 3a.

It is composed of lower end plates 3b and 3c, and has an annular shape as a whole. And the above casing 2
Annular gaskets 5a and 5b made of soft urethane that follow the shape of the element 3 are provided at the portions still in contact with the upper and lower end plates 3b and 3C, so as to maintain airtightness between the casing 2 and the element 3. It has become.

Here, in the present invention, when installing the gaskets l-5a and 5b, the lower part of the casing 2 and the upper case 2a are
, an undercut-shaped groove 6a on the inner surface of 2b,
6b is formed in an annular shape along the shape of the gasket 1-53, 5b, and the gasket 5a is placed in the groove 5a, 5b.
, 5b was filled by molding.

For example, in Figure 2, gasket l-58 is attached to upper case 2b.
In this case, the mold 7 is placed at the edge of the groove 6a, and the through hole 8 formed in the bottom surface 8 of the groove 6 is installed.
A melted soft urethane material forming the gasket 5a is injected into the space formed by the groove 6a and the mold 7. Of course, the inner shape of the mold 7 is shaped to form the protrusion shape of the gasket 5a. After filling the gasket 5a material into the groove 6a and the mold 7 and molding it, by removing the mold 7, a part of the gasket 5a enters the hole in the groove 6 and is fixed. That will happen. At this time, since the groove 6 has an undercut shape, the gasket 5a will not easily fall off from the groove 6a and can be securely attached. By the way, the means for attaching the gasket 5a is the gasket 5 that is attached to the lower case 2a.
Similar means are used in case b, and the gasket l-5b is attached to the lower case 2a by arranging the lower gasket 2a upside down and using the mold 7 described above.

In this way, the gaskets 5a and 5b are formed by filling the mold 7 with molten soft urethane material, so the gaskets 5a and 5b must be molded into the lower and upper cases 2a and 2b in advance. By,
When assembling the air cleaner 1, the process of assembling the gaskets 5a and 5b can be omitted, and work efficiency can be significantly improved.

The mounting structure of the gaskets 5a and 5b is as follows: 1
Of course, the present invention can also be applied to the gasket 4 used at the joint between the upper cases 2a and 2b.

The above-mentioned gaskets 4, 5a, and 5b are not limited to soft urethane, but may be made of synthetic resin that is soft enough to provide a sufficient airtight function.

As explained above, in the air cleaner gas get mounting structure of the present invention, an annular undercut-shaped groove is formed on the inner surface of the air cleaner casing, and an annular gasket made of a synthetic resin material is installed in this groove. A part of the gasket is filled and fixed by molding, so when installing the gasket to the casing, no other installation medium such as adhesive is required, and the gasket itself is securely attached. can be done. Since the gasket is pre-molded in one piece, it has the excellent effect of improving work efficiency when assembling the air cleaner.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part of a gasket mounting structure for an air cleaner according to an embodiment of the present invention, and FIG. 2 is an enlarged sectional view of a main part showing one process of installing a gasket according to the present invention. 1...Air cleaner, 2...Casing, 3...
Element, 4, 5a, 5b... Gasket, 6a,
6b... Concave groove, M g'F'L', Mu /,
Tokyo Roki Co., Ltd. Representative Patent Attorney - Kensuke Iro Figure 1 Figure 2 0 481

Claims (3)

[Claims] (1) An undercut-shaped groove is formed in an annular shape on the inner surface of the air cleaner casing, and a part of an annular gasket made of a synthetic resin material is filled and fixed by molding into this groove. The air cleaner's casquerat mounting structure is characterized by: (2) The air cleaner gasket mounting structure according to claim 1, wherein the casing is made of polypropylene. (3) The air cleaner gasket mounting structure according to claim 1 or 2, wherein the gasket is made of soft urethane.