JPH0828376A - Air cleaner for internal combustion engine - Google Patents

Abstract

PURPOSE:To provide an air cleaner which can be inexpensively manufactured without requiring a separate member to install a filtering element. CONSTITUTION:A filtering element 2 which is arranged in an intake air passage of an internal combustion engine and whose filtering material is bent in a corrugated plate shape, is provided in divisible housings 10. A pair of comb teeth parts ill and 121 which are respectively inserted in crest parts 21 and valley parts 22 of the filtering element 2 and sandwich both side end parts 29 of the filtering element 2, are provided in the housings 10, and in the filtering element 2, end plate parts 20 to be sandwiched by the housings 10 are arranged in the lengthwise directional both end parts. The housings have a case 11 to house the filtering element 2 and a cap 12 to cover the case 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an internal combustion engine air cleaner provided in an intake passage of an internal combustion engine.

[0002]

2. Description of the Related Art An air cleaner is provided in an intake passage of an internal combustion engine such as an automobile engine to remove dust and dirt contained in the intake air. The air cleaner above is
It is composed of a housing consisting of a case and a cap, and a filter mounted in the housing.

The filter comprises a filter element formed by folding a filter material made of a non-woven fabric into a corrugated plate shape, and a resin frame for holding the outer periphery of the filter element and assisting mounting to the housing. Become. In addition, a seal member made of rubber is provided on the outer periphery of the resin frame so as to ensure a sealing property between the resin frame and the housing. That is, the filter can be attached to the housing by the resin frame and the seal member.

In manufacturing the above filter,
The filter element, the resin frame, and the seal member are molded in separate steps, and then these are assembled to form a filter.

[0005]

However, in the above air cleaner, separate parts made of different materials, such as a resin frame and a sealing member, are used to mount the filter element on the housing. The manufacturing of these parts is a separate process from the manufacturing process of the filter element, and it is necessary to assemble it to the filter element prior to manufacturing the air cleaner. Therefore, the conventional air cleaner described above has many manufacturing steps and the manufacturing cost is high.

In view of the above problems, the present invention is intended to provide an air cleaner for an internal combustion engine which does not require a separate member for mounting the filter element on the housing and can be manufactured at low cost.

[0007]

According to the present invention, there is provided an air cleaner for an internal combustion engine, comprising: a filter element, which is disposed in an intake passage of an internal combustion engine and is formed by bending a filter medium into a corrugated plate shape, in a separable housing. The housing has a pair of comb teeth which are respectively inserted into the crests and troughs of the filter element to sandwich both side ends of the filter element, and the filter element has a lengthwise direction. The air cleaner for an internal combustion engine is characterized in that both end portions are provided with end plate portions for being sandwiched by the housing.

What is most noticeable in the present invention is that the housing has a pair of comb teeth for holding the filter element, and both end portions of the filter element are end plate parts for holding the filter element in the housing. Is to have.

The above-mentioned filter element is a sheet-shaped filter medium which is pleated or the like, cut into a desired length, and formed into a corrugated plate shape. Then, the cut portion becomes the end plate portion. It is also possible to appropriately bend the above-mentioned cut portion and bond a plurality of folded filter media to form the end plate portion. In this case, the strength of the end plate portion is improved.

The filter medium is made of, for example, a non-woven fabric made of fibers. Such fibers include polyester,
Chemical fibers such as polypropylene, nylon, rayon, glass, acetate and acrylic, or natural fibers such as pulp are used. In addition to the above non-woven fabric, a woven fabric, a gauze cloth or a nylon mesh can be used as a filter medium.

The comb teeth are provided along the inner wall surface of the housing so that both ends of the filter element can be completely sealed, and are provided on all surfaces contacting both ends of the filter element. is there.

The comb shape of the comb teeth is almost the same as the corrugated plate shape of the filter element, and when the two are sandwiched, no extra gap appears between them. Has become. That is, the comb of the comb teeth has a shape that follows the shapes of the peaks and valleys of the filter element (Fig. 2). Therefore, both ends of the filter element are closed by the comb teeth, and the peaks and the valleys are formed in a substantially V-shaped bag shape.

Further, it is preferable that the housing has a holding portion for holding the end plate portion of the filtering element. The holding portion has a structure capable of holding and fixing the end plate portion of the filtration element as it is.

As such a structure, for example, in the holding portion on the cap side, the tip is bent toward the lower case side, and the cap is fixed to the case by stacking the cap on the case. There are things you can do (Figure 2). Thus, by covering the case with the cap, the end plate portion of the filter element can be clamped and fixed, and an excellent sealing property can be secured without air leakage from the clamp portion.

Further, it is preferable that the sandwiching portion is continuous with the comb tooth portion. As a result, the seal between the comb tooth portion and the sandwiching portion becomes complete, and it is possible to prevent air from leaking between them.

As a detailed structure of the air cleaner, for example, the housing has a case for accommodating the filtering element and a cap capped on the case. And, in this case, the case has an inlet for sending in air, while the cap has an outlet for sending out the air filtered by the filtering element, and has a groove at the inner end of the case. -Shaped comb teeth are provided, and convex comb teeth are provided at the open end of the cap.

Next, it is preferable that the filter element is provided with a holding member for holding the corrugated plate state of the filter element (FIG. 3). The holding member is a plate material that is formed so as to be insertable between the waves (for example, between the crests) of the corrugated plate of the filtration element. Thereby, the interval between the peaks of the filter element can be kept constant, and the shape of the filter element as the corrugated plate can be maintained. Further, the workability when the filter element is attached to the comb teeth portion is greatly improved.

[0018]

In the air cleaner for an internal combustion engine of the present invention, first, the housing of the air cleaner is provided with a pair of comb teeth for holding the filter element.
The comb teeth are formed in the same shape as the corrugated plate of the filter element. As a result, when the filter element is clamped in the housing, it is completely sealed without forming a gap therebetween.

Both ends of the filter element have end plate portions for holding them in the housing. The filter element is sandwiched by the housing by the end plate portion, and the end plate portion is a part of the filter element. As in the conventional example, after the filter element is formed, another part manufactured by another process is provided. Not a thing. Therefore, the manufacturing process of the air cleaner becomes much simpler than before. Therefore, the manufacturing cost is low. In addition, the air cleaner of this example does not use a separate member, so the structure is simple.

As described above, according to the present invention, it is an object of the present invention to provide an air cleaner for an internal combustion engine which does not require a separate member for mounting the filter element on the housing and can be manufactured at low cost.

[0021]

【Example】

Embodiment An air cleaner for an internal combustion engine according to an embodiment of the present invention will be described with reference to FIGS. The air cleaner 1 of this example is arranged in an intake passage 90 (FIG. 4) of an automobile engine 9 as shown in FIGS. 1, 2 and 4, and a filter medium is bent like a corrugated plate in a separable housing 10. The filter element 2 is formed.

Inside the housing 10, there are provided a pair of comb teeth 111, 121 which are respectively inserted into the ridges 21 and the valleys 22 of the filter element 2 and hold both side ends 29 of the filter element 2. Have. The filter element 2 has the housing 10 at both ends in the longitudinal direction.
An end plate portion 20 for sandwiching is provided.

The housing 10 has a case 11 for accommodating the filtration element 2 and a cap 12 capped on the case 11, and the case 11 is provided with air 8
While having an inlet 110 for delivering air, while the cap 12 has an outlet 120 for delivering filtered air 80 filtered by the filtering element 2. The case 11 of the housing 10 is provided with a comb tooth portion 111 on the inner end thereof, and a downward comb tooth portion 121 is provided on the cap 12. Further, a plurality of reinforcing ribs 113 and 123 are provided on the outer ends of the case 11 and the cap 12.

Further, the valley portion 22 of the filtration element 2 of this example
A holding member 28 is inserted in the. The holding member 2
As shown in FIG. 3, each of the troughs 2 of the filtration element 2 is provided.
2 and the holding member 2
8 to the end plate portion 20 of the filtration element 2 and a locking piece 282.

As shown in FIG. 2, holding portions 112 and 122 for holding the end plate portion 20 of the filter element 2 are provided on both sides of the case 11 and the cap 12 in the longitudinal direction. The tip of the holding portion 122 on the side of the cap 12 is bent in an L shape toward the case 11. By stacking the cap 12 on the case 11, the cap 12 can be fixed to the case 11. Further, the sandwiching portions 112 and 122 have the comb teeth 11
It is continuous with 1,121.

The comb tooth portion 111 of the case 11 is formed as a concave groove on the inner wall surface of the case 11, and the comb tooth portion 121 of the cap 12 is formed in a convex shape from the opening end of the cap 12. The comb tooth portion 121 is inserted into the case 11 and is formed so as to mesh with the comb tooth portion 111.

As shown in FIG. 4, the air cleaner 1 of this example.
Is disposed in the intake passage 90 of the automobile engine 9. In the figure, reference numerals 91 and 92 are intake pipes. Then, in the air cleaner 1, the air 8 taken in through the intake pipe 91 is sent into the case 11 through the inlet 110. After that, when the air 8 passes through the filter element 2, dust or the like is filtered, and the filtered air 8
It becomes 0. Thereafter, the filtered air 80 is delivered to the cap 12, and further, from the outlet 120, the intake pipe 92.
It is sent to the engine 9 via.

Next, the function and effect of this example will be described. In the air cleaner 1 of this example, first, a pair of comb teeth 111, 121 for sandwiching the filter element 2 is provided in the housing 10 of the air cleaner. The comb teeth 111 and 121 have substantially the same shape as the peaks 21 and valleys 22 of the corrugated plate of the filter element 2.

Therefore, as shown in FIG. 2, when the filter element 2 is housed in the case 11, the comb teeth 11 of the case 11 are provided on both side ends of the peak portion 21 of the filter element 2.
1 is inserted. Then, cap 12 on case 11
When the cap is crowned, the comb teeth 121 provided on the cap 12 are inserted into both side ends of the valley 22 of the filter element 2.
As a result, when the filter element 2 is housed in the housing 10, the filter element 2 is completely sealed without forming a gap therebetween.

At both ends of the filtering element 2 in the longitudinal direction, the end plate portions 2 for being clamped in the housing 10 are provided.
Has 0. The filter element 2 has the end plate portion 2
It is clamped by the housing 10 by 0. The end plate portion 20
Is a part of the filter element 2, and as in the conventional example,
After forming the filter element 2, a separate component manufactured by a separate process is not provided. Therefore, air cleaner 1
The manufacturing process will be much simpler than before. Therefore, the manufacturing cost is low. Further, since the air cleaner 1 of this example does not use a separate member, the structure is simple.

Further, the filter element 2 of this embodiment has a holding member 28 for holding the corrugated plate state of the filter element 2.
Is provided. That is, the holding member 28 is inserted between the crests of the filter element 2 and maintains a constant gap between them. Therefore, the shape of the filter element 2 as the corrugated plate can be maintained. As a result, workability when the filter element 2 is attached to the comb teeth 111 and 121 is greatly improved.

Further, the holding portions 112, 122 in the housing 10 of this example have the above structure. Therefore, by capping the case 12 with the cap 12, the end plate portion 20 of the filtration element 2 can be clamped and fixed, and air does not leak from the clamp portions 112 and 122, which is an excellent sealing property. Can be secured.

Further, the sandwiching portions 112 and 122 are continuous with the comb tooth portions 111 and 121. As a result, the seal between the two becomes perfect and air leakage can be prevented from here.

Therefore, according to this embodiment, it is possible to provide an air cleaner for an internal combustion engine which does not require a separate member for mounting the filter element on the housing and can be manufactured at low cost.

[Brief description of drawings]

FIG. 1 is a perspective development view of an air cleaner for an internal combustion engine in an embodiment.

FIG. 2 is a cross-sectional view of the holding portion of the housing in the embodiment.

FIG. 3 is a front view of a holding member according to an embodiment.

FIG. 4 is an explanatory view of a usage state of the air cleaner in the embodiment.

[Explanation of symbols]

 1. ． ． Air cleaner, 10. ． ． Housing, 11. ． ． Case, 110. ． ． Inlet, 111, 121. ． ． Comb teeth, 12. ． ． Cap, 120. ． ． Outlet, 2. ． ． Filter element, 20. ． ． End plate portion, 21. ． ． Yamabe, 22. ． ． Tanibe, 28. ． ． Holding member, 29. ． ． Side edge, 8. ． ． Air, 80. ． ． Filtered air, 90. ． ． Intake passage,

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tetsuro Okazono 1-1, Showa-cho, Kariya city, Aichi Nihon Denso Co., Ltd.

Claims (3)

[Claims] 1. An air cleaner for an internal combustion engine, comprising: a filter element, which is arranged in an intake passage of an internal combustion engine and is formed by bending a filter medium into a corrugated plate shape, in a separable housing. The filter element is provided with a pair of comb teeth which are respectively inserted into the peaks and troughs of the filter element to sandwich both side ends of the filter element, and the filter element is provided with the housing at both lengthwise ends thereof. An air cleaner for an internal combustion engine, which is provided with an end plate portion for sandwiching by. 2. The housing according to claim 1, wherein the housing has a case for accommodating the filtration element and a cap capped on the case, and the case has an inlet for introducing air, and The cap has an outlet for delivering the air filtered by the filter element, has a grooved comb tooth at the inner end of the case, and has a convex at the open end of the cap. An air cleaner for an internal combustion engine, which is provided with comb teeth. 3. The method according to claim 1, wherein
An air cleaner for an internal combustion engine, wherein the filter element is provided with a holding member for holding the corrugated plate state of the filter element.