JP3437315B2 - Resin air cleaner - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin air cleaner for filtering and purifying air supplied to various engines.

[0002]

[Prior art]

(1) Conventionally, a tubular element housed in a housing case of a resin case (housing) is attached to a resin case or a resin cap together with a gasket (sealing material) with a large tightening force by a center bolt and a wing nut. A so-called center bolt type resin air cleaner that is physically fixed and held is known.

According to this structure, the resin case or the resin cap not only tends to change with time due to the material, but also the large tightening force of the center bolt and the wing nut constantly acts. Has a high rate of change and is easily deformed by causing permanent strain. At the time of the deformation, the fastening force of the center bolt and the wing nut decreases, and a gap is formed between the gasket (hereinafter referred to as a seal material) and the element, which may impair the sealing effect of the gasket and cause dust leakage. There is.

Therefore, in order to avoid the above-mentioned inconvenience due to the center bolt method, for example, in (2) Japanese Utility Model Laid-Open No. 1-176738, resin upper parts connected to the upper and lower sides of a cylindrical resin body (housing), respectively. The outer peripheral wall of the cylindrical projection for element attachment, which is formed on the cover plate and the lower cover plate and is arranged to extend into the central hole of the cylindrical element, and both end sides in the axial direction of the cylindrical element. The two inner ring-shaped packings (hereinafter referred to as seal members) having a substantially vertically long rectangular cross section which are interposed between the inner peripheral surface and the abutting portion to form a sealing surface parallel to the contact portion and perform a sealing action are used. A cylinder seal type seal structure has been proposed. (3) Further, in Japanese Patent Publication No. 2-501201, the center of the tubular element is provided coaxially with the air outlet pipe projecting outward at the upper center of the peripheral wall of the tubular air cleaner housing. Insert the central hole of an annular (ring-shaped) thick elastic member (hereinafter referred to as a sealing material) formed on the upper end side of the cylindrical element into the annular protrusion that is arranged to extend into the hole. A sealing structure of a so-called inner cylinder sealing system has been proposed in which the inner peripheral surface of the elastic member is brought into contact with the outer peripheral surface of the annular protruding portion to seal it.

[0005]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
According to the seal structure of the inner cylinder sealing method disclosed in Japanese Patent Publication No. 738 and Japanese Patent Publication No. 501201/1990, it is not necessary to provide a fastening portion such as a center bolt and a wing nut, so that it is possible to avoid the influence thereof. In addition, since it does not require high strength as in the center bolt method, the thickness of the resin housing can be reduced, and the entire resin air cleaner can be reduced in weight.

However, in any of the above cases, since the seal structure is an inner cylinder seal system in which the seal material is brought into contact with the inner peripheral wall of the center hole of the cylindrical element, (1) a predetermined sealing effect is obtained by the seal material. In order to obtain the above, it is necessary to widen the sealing surface in the direction along the axial center line of the tubular element (within the central hole of the tubular element), which inevitably increases the thickness.

Therefore, the amount of the sealing material is increased and the molding cycle is correspondingly lengthened, which hinders cost reduction. (2) The sealing material comes into contact with the inner peripheral wall surface of the tubular element, and the filtering area of the filtering material is substantially reduced, and the filtering function is not efficiently used. Therefore, even if the seal material has a seal structure in which the inner peripheral wall surface of the tubular element is in contact with the tubular element, the tubular element becomes large in size in order to maintain the filtration area of the filter medium at a target value. (3) Therefore, the resin-made air cleaner having the seal structure of the inner cylinder seal system is still compact and lightweight,
There is still room for cost reduction. .

The present invention has been made in view of the above circumstances. It is possible to improve the sealing property without using the center bolt method and to effectively utilize the filtering function of the inner peripheral side of the filter element of the cylindrical element, and It is intended to provide a resin air cleaner that can be made compact and lightweight, and can be reduced in cost.

[0009]

According to a first aspect of the present invention, there is provided a resin air cleaner in combination with a first resin housing having an air introduction pipe and a second resin housing having an air discharge pipe, or a first resin. Made of a combination of a housing made of resin and a second resin housing having an air introduction pipe and an air discharge pipe, a tubular element housed inside the first and second resin housings, and the first and second In a resin air cleaner including a fastening portion for fastening a resin housing, a sheath fixed to either one of the end portion of the tubular element facing the air outlet pipe or the inner wall of the air outlet pipe. The first and second
When the resin housing is fastened by the fastening portion, the seal material is brought into contact with the non-fixed side to seal the inner wall and the tubular element.

The invention of claim 2 and the resin air cleaner are
A combination of a first resin housing having an air introduction pipe and a second resin housing having an air discharge pipe, or a first resin housing and a second resin housing having an air introduction pipe and an air discharge pipe A resin air cleaner comprising a combination, a tubular element housed inside the first and second resin housings, and a fastening portion that fastens the first and second resin housings,
The sealing material is fixedly provided on either one of the end of the tubular element facing the air outlet pipe or the recess formed in the inner wall connected to the air outlet pipe. (2) When the resin housing is fastened by the fastening portion, the seal material is brought into contact with the non-fixed side and the seal material acts in the direction along the axis of the tubular element. It is bent by a tightening force to contact with the inner surface of the recess in a direction along the axis and a radial direction perpendicular to the axis to seal.

[0011]

[Action and effect]

(1) According to the resin air cleaner of the first aspect, the sheath fixedly provided on either the end of the cylindrical element on the side of the second resin housing facing the air outlet pipe or the inner wall of the air outlet pipe. The tubular element is housed inside the first and second resin housings with the interposition of the ruler material, and the first and second resin housings are fastened by the fastening portions.

Then, the seal material abuts the side on which the seal material is not fixed, and surely seals the inner wall of the air outlet pipe and the end of the tubular element. As described above, in the resin air cleaner according to the first aspect, since the center bolt method is not used and the seal material does not come into contact with the inner peripheral surface of the cylindrical element, the filtration on the inner peripheral side of the cylindrical filter material is performed. The function can be effectively utilized and the filtering function can be enhanced.

Therefore, the resin air cleaner according to claim 1 can enhance the filtering function, and therefore, compared with the conventional one having the inner cylinder seal type seal structure, the tubular element, the first and second resin air cleaners. The housing and the like and the whole can be made compact and lightweight, and the cost can be reduced. (2) According to the resin air cleaner of claim 2, the second resin housing is fixed to either the end of the cylindrical element on the side facing the air outlet pipe or the recess formed in the inner wall of the air outlet pipe. The tubular element is housed inside the first and second resin housings with the seal material provided therebetween, and the first and second resin housings are fastened by the fastening portions.

Then, the seal material comes into contact with the side on which the seal material is not fixed, and is bent by the tightening force acting in the direction along the axis of the tubular element, and the air is led out. The inner surface of the recess formed in the inner wall of the tube is abutted in the direction along the axis and in the radial direction perpendicular to the axis, and the inner surface of the recess and the end of the tubular element are securely connected. Seal it.

In the resin air cleaner according to claim 2, as in the resin air cleaner according to claim 1, as compared with the conventional inner cylinder sealing type seal structure, the filtering function on the inner peripheral side of the cylindrical filter medium is made effective. In addition to being effective in increasing the filtration function, the cylindrical element, the first and second resin housings and the like can be made compact and lightweight, and the cost can be reduced. -Since the sealing material can exert the sealing function in the two directions with respect to the inner surface of the recess formed in the inner wall of the air outlet pipe, the sealing performance is further improved as compared with the case of the resin air cleaner according to claim 1. You can

[0016]

【Example】

(Embodiment 1) Embodiment 1 of the resin air cleaner of the present invention will be described with reference to FIGS. As shown in FIG. 1, the resin air cleaner 1 according to the first embodiment includes a cylindrical element 2 and a lower housing (which corresponds to a first resin housing, which is connected to each other and accommodates and holds the cylindrical element 2 therein. The same) 3a and upper housing (second
Compatible with resin housings. The same applies hereinafter. ) 3b,
The seal member 4 is installed between the upper housing 3b and the cylindrical element 2, and the connecting portion 5 detachably connects the lower housing 3a and the upper housing 3b.

The cylindrical element 2 has a cylindrical filter medium 20 having a center hole O and a fold (not shown) having a chrysanthemum-shaped cross section around the center hole O, and the outer periphery and the inner periphery of the filter medium 20 are not shown. Outer peripheral cylindrical reinforcing plate 21 and inner peripheral cylindrical reinforcing plate 22 having a large number of holes, and a metal ring provided on the other side of the annular end surface in the direction of the axis P with respect to the filter medium 20 and on the other side. End reinforcing plate 23 and end elastic reinforcing plate 24 made of resin.

The end elastic reinforcing plate 24 is made of soft urethane as a resin material and integrally insert-molded at the other end (the other of the annular end faces) of the filter medium 20 by a resin molding machine and has elasticity. The ring-shaped elastic cushioning portion 2 is provided at a position facing the inner surface of the bottom portion 31 of the lower housing 3a described later.
40 is formed. The cylindrical element 2 is housed in a housing chamber 3c between an air introducing pipe 32 of a lower housing 3a (see FIG. 1) and an air outlet pipe 36 of an upper housing 3b, which will be described later. The introduced air before purification passes from the outer peripheral side to the inner peripheral side of the filter medium 20,
The filtered purified air is led out from the center hole O to the air lead-out pipe 36.

The lower housing 3a is made of a resin and has a bottomed cylindrical body. The lower housing 3a includes a peripheral wall portion 30 and bottom portions formed on the end side and the other end side of the peripheral wall portion 30 in the direction of the axis P. Three
1 and opening 33. An air inlet 320 opening in a direction orthogonal to the axis P and an air inlet pipe 32 communicating with the air inlet 320 are formed on the side surface of the peripheral wall portion 30 at a substantially intermediate position between the bottom portion 31 and the opening 33. A connecting portion 5 which will be described later is provided on the opening 33 side of the peripheral wall portion 30.

On the inner peripheral surface side of the bottom portion 31 (inside the accommodating chamber 3c), a bottom rib 311 on which the ring-shaped elastic buffer portion 240 of the end elastic reinforcing plate 24 formed at the lower end of the cylindrical element 2 is placed. And side ribs 312 that contact the outer peripheral end 241 of the end elastic reinforcing plate 24 and fix the cylindrical element 2 in the radial direction are formed. The upper housing 3b is
It is formed of a resin, and has a peripheral wall portion 34 that is fastened to the peripheral wall portion 30 at the position of the opening 33 of the lower housing 3a and a ceiling wall portion 35 that faces the bottom portion 31 of the lower housing 3a.
And an air outlet 360 that opens in the center of the ceiling wall portion 35 and an air outlet pipe 36 that communicates with the air outlet 360 and is bent vertically in the middle.

The air outlet pipe 36 is connected to the air outlet 360.
A vertical pipe portion 361 having an inner diameter of 109 mm and communicating with the horizontal pipe portion 36 having an inner diameter of 10 mm bent above in the horizontal direction.
It consists of 2. Further, the peripheral wall portion 34 is provided with a hooking projection portion 52 for detachably engaging a swinging tip locking portion 510 of the connecting portion 5 described later. The lower housing 3a and the upper housing 3b are combined with each other to form a housing chamber 3c for housing the cylindrical element 2 therein.

The sealing material 4 has a length of 15 mm and a thickness of 10 m.
m of a tubular shape, and the air outlet pipe 3 of the upper housing 3b
The outer diameter before being attached to the vertical pipe portion 361 of 6 is 109 m
It is set to m. As shown in FIG. 2, the sealing material 4 has a lower end surface 41 in the direction of the axis P bonded to a part of the upper surface 230 of the ring-shaped end reinforcing plate 23 of the cylindrical element 2 by an adhesive (not shown). Has been fixed. Therefore, it is not necessary for the sealing material 4 to contact the inner wall surface 220 of the cylindrical element 2.

As shown in FIG. 1, the connecting portion 5 has an engaging member 51, one end of which is pivotally supported by the support shaft 50 and the other end of which is swingable, on the opening 33 side of the peripheral wall portion 30 of the lower housing 3a.
The hook protrusion 52 is provided on the peripheral wall portion 34 of the upper housing 3b and detachably engages the swing tip locking portion 510 on the other end side of the locking tool 51. A predetermined number of the connecting portions 5 can be installed on the peripheral wall portion 30 of the lower housing 3a and the peripheral wall portion 34 of the upper housing 3b at substantially equal intervals in the circumferential direction.

An assembling procedure of the air cleaner 1 of the first embodiment constructed as described above will be described. First, the cylindrical element 2 is mounted in the upper housing 3b. in this case,
As shown in FIG. 2, the sealing material 4 fixed to a part of the upper surface 230 of the ring-shaped end reinforcing plate 23 of the cylindrical element 2 is inserted into the vertical pipe portion 361 of the upper housing 3b in the arrow Y1 direction. To do.

The upper surface 2 of the ring-shaped end reinforcing plate 23
The area portion where the sealing material 4 is not fixed at 30 is inserted to a position where it abuts the ceiling wall portion 35 of the upper housing 3b, and the mounting is completed. The sealing material 4 is elastically deformed while being pressed toward the inner peripheral surface 40 while the outer peripheral surface 43 is in contact with the inner peripheral surface S of the vertical pipe portion 361 in the insertion process, and is inserted by the elastic reaction force. After that, since it comes into close contact with the inner peripheral surface S of the vertical pipe portion 361, a good sealing effect can be obtained.

After the sealing material 4 is attached to the vertical pipe portion 361 of the upper housing 3b as described above, the lower housing 3a is continuously opposed to the lower end side of the cylindrical element 2 in the direction of the arrow Y1. And the peripheral wall portion 30 at the position of the opening 33 is attached to the peripheral wall portion 34 of the upper housing 3b. At this time, in the cylindrical element 2, the ring-shaped elastic buffer portion 240 of the end elastic reinforcing plate 24 is placed on the bottom rib 311 integrally formed on the inner bottom portion 31 of the lower housing 3a, and the elastic The outer peripheral end 241 of the buffer portion 240 is in contact with the side rib 312 of the lower housing 3a.

In this state, the locking member 51 of the connecting portion 5 provided swingably on the lower housing 3a (see FIG. 1).
Is swung toward the hooking protrusion 52 provided on the upper housing 3b, and the swinging tip locking portion 510 is engaged with the hooking protrusion 52, thereby lowering the lower housing 3a and the upper housing 3a. 3b is fastened and connected.

In this way, the cylindrical element 2 includes the ceiling wall portion 35 of the upper housing 3b that abuts the upper surface 230 of the ring-shaped end reinforcing plate 23 and the ring-shaped elastic buffer portion 240 of the end elastic reinforcing plate 24. Lower housing 3 for mounting
It is fixedly held in the direction of the axis P by the bottom rib 311 of a, and is also fixedly held in the radial direction by the side rib ribs 312 abutting the outer peripheral end 241 of the end elastic reinforcing plate 24, and is stably held at a fixed position.

According to the resin air cleaner 1 of the first embodiment assembled as described above, the sealing material 4 fixes the lower end surface 41 to the upper surface 230 of the ring-shaped end reinforcing plate 23 of the cylindrical element 2. In this state, the air introduction pipe 36 is configured to be in contact with and closely adhered to the inner peripheral surface S of the vertical pipe portion 361 of the air introduction pipe 36. Therefore, in addition to the good sealing effect of the sealing material 4, various effects described below can be obtained.

That is, as another effect of the resin air cleaner 1 of the first embodiment, (1) the sealing material 4 is provided in the central hole O of the cylindrical element 2 (the ring-shaped end reinforcing plate 23 and the end elastic reinforcing plate). 24), it is not necessary to seal the inner peripheral side tubular reinforcing plate 22, so that the air filtration area of the tubular filter medium 20 can be effectively utilized. Another effect of not sealing the inner peripheral tubular reinforcing plate 22 with the sealing material 4 is that the thickness of the sealing material 4 can be made thin and the volume thereof can be made small, and the molding material can be reduced and at the time of manufacturing. The molding cycle can be shortened, which helps reduce costs. (2) Unlike the conventional case, the holding portion for fixing and holding the sealing material 4 is not formed at a position which is integral with the upper housing 3b and extends into the accommodation chamber 3c of the cylindrical element 2, and the center is not formed. Since the seal structure arranged in the hole O is not used, the volume of the storage chamber 3c formed by the lower housing 3a and the upper housing 3b can be reduced, and the resin air cleaner 1 can be made compact as a whole. For example, the height of the resin air cleaner 1 obtained after assembly is compared with that of the conventional one (when it is formed at a position that is integral with the upper housing 3b and extends into the accommodation chamber 3c of the cylindrical element 2). The size can be reduced by about 10 mm. (3) Ring-shaped end reinforcing plate 23 of the cylindrical element 2
Does not need to extend to the inner peripheral side cylindrical reinforcing plate 22 side in the center hole O, so that it is approximately 40% compared to, for example, the ring-shaped end reinforcing plate 23 extended to the inner peripheral side cylindrical reinforcing plate 22 side. Can be made smaller. (4) Therefore, without using the center bolt method, the sealing property is improved and the filter medium 20 for the cylindrical element 2 is provided.
It is possible to effectively utilize the filtration function on the inner peripheral side of the device, and to reduce the size and weight of the device and reduce the cost.

As a modification of the first embodiment, contrary to the case of the first embodiment, prior to the assembly of the resin air cleaner 1, the inner peripheral surface S of the vertical pipe portion 361 of the air outlet pipe 36 is An outer peripheral surface 43 of the sealing material 4 is adhered and fixed by an adhesive (not shown), and the lower end surface 41 of the sealing material 4 is brought into contact with the ring-shaped end reinforcing plate 23 of the cylindrical element 2 during assembly. It is also possible to obtain a sealing effect.

(Embodiment 2) A resin air cleaner 1A of Embodiment 2 will be described with reference to FIG. The resin air cleaner 1A of the second embodiment has the same configuration as the resin air cleaner 1 of the first embodiment except that the cylindrical element 2A and the tubular seal material 4A are used. The same components are given the same reference numerals as in the first embodiment, and
The explanation is omitted.

The cylindrical element 2A faces the vertical tube portion 361 of the air outlet tube 36 of the upper housing 3b.
It has an inner peripheral side cylindrical reinforcing plate 22a in which an extension 221 projecting about 15 mm is formed on the front side of the ring-shaped end reinforcing plate 23. The sealing material 4A has a length of 10 mm and a thickness of 8 mm, and has a vertical pipe portion 361 of the air outlet pipe 36 of the upper housing 3b.
The outer diameter before it is attached to is set to 109 mm.
The sealing material 4A has a lower end surface 41 with a ring-shaped end reinforcing plate 23.
The inner peripheral surface 40 at a position about 5 mm away from the upper surface 230 of the
Is adhered and fixed to the outer peripheral surface 222 of the extension portion 221 of the inner peripheral side cylindrical reinforcing plate 22a by an adhesive (not shown).

The sealing material 4A is used together with the cylindrical element 2A when the resin air cleaner 1A is assembled.
Vertical pipe portion 36 of air outlet pipe 36 of upper housing 3b
1 is inserted. Then, since the outer peripheral surface 43 of the sealing material 4A is in contact with and in close contact with the inner peripheral surface S of the vertical pipe portion 361, a sealing effect can be obtained. According to the resin air cleaner 1A of the second embodiment, it is possible to obtain substantially the same effects as the first embodiment.

Further, the inner peripheral cylindrical reinforcing plate 2 made of metal
The coefficient of thermal expansion of the extension portion 221 of 2a is higher than the coefficient of thermal expansion of the vertical tube portion 361 made of resin. Therefore, when the extension portion 221 is heated by a hot atmosphere during operation of the engine (a temperature of about 100 ° C. or higher), the extension portion 221 is outwardly (diameter expansion direction) larger than that of the vertical pipe portion 361. It thermally expands, and the space between the vertical tube portion 361 and the inner peripheral surface S is reduced. As a result, the outer peripheral surface 43 of the sealing material 4A
With this, it is possible to obtain an effect that the sealing property with the inner circumferential surface S of the vertical pipe portion 361 can be more strongly secured.

As a modified example of the second embodiment, contrary to the second embodiment, prior to the assembly of the resin air cleaner 1, the inner peripheral surface S of the vertical pipe portion 361 of the air outlet pipe 36 is The outer peripheral surface 43 of the sealing material 4A is bonded and fixedly held by an adhesive (not shown), and the inner peripheral side cylindrical reinforcing plate 22 is assembled at the time of assembly.
It is also possible to obtain the sealing effect by bringing the inner peripheral surface 40 of the sealing material 4 into contact with the outer peripheral surface 222 of the extension portion 221 of a.

(Embodiment 3) A resin air cleaner 1B of Embodiment 3 will be described with reference to FIG. The resin air cleaner 1B of the third embodiment has the same configuration as the resin air cleaner 1 of the first embodiment except that the cylindrical element 2B and the sealing material 4B which are integrally connected in advance are used. The same components are given the same reference numerals as in the first embodiment, and their explanations are omitted.

The cylindrical element 2B is directed toward the vertical pipe portion 361 of the air outlet pipe 36 of the upper housing 3b.
It has a ring-shaped end reinforcing plate 23b on which a holding portion 231 having a substantially T-shaped cross section is formed. The sealing material 4B has a length of 15
mm, the thickness is 10 mm, and the outer diameter before being attached to the vertical pipe portion 361 of the air outlet pipe 36 of the upper housing 3b is 10
It is set to 9 mm. The sealing member 4B has the ring-shaped end reinforcing plate 23 at a substantially central portion in the thickness direction during molding.
The holding part 231 of b is inserted.

Further, since the sealing material 4B is fixed and held with the holding portion 231 of the inserted ring-shaped end portion reinforcing plate 23b as the core material, the cylindrical element 2 as in the case of the sealing material 4A of the first embodiment. It is not necessary to adhere the lower end surface 41 to the ring-shaped end reinforcing plate 23 of No. 1 by an adhesive. The sealing material 4B is used together with the cylindrical element 2B when the resin air cleaner 1B is assembled.
It is inserted into the vertical pipe portion 361 of the air outlet pipe 36 of b.
Then, the outer peripheral surface 43 of the sealing material 4B abuts the inner peripheral surface S of the vertical pipe portion 361, so that a sealing effect can be obtained.

According to the resin air cleaner 1B of the third embodiment, substantially the same operation and effect as in the first embodiment can be obtained, and the ring-shaped end reinforcing plate 23b is used as the sealing material 4B.
Since the holding portion 231 is inserted and fixedly held as a core material, it is reinforced and has increased rigidity, and the sealing effect can be held for a long period of time. Further, the coefficient of thermal expansion of the holding portion 231 of the ring-shaped end reinforcing plate 23b made of metal is higher than the coefficient of thermal expansion of the vertical tube portion 361 made of resin.
Therefore, when the holding portion 231 is heated by the hot atmosphere during operation of the engine (a temperature of around 100 ° C. or higher), the holding portion 231 is moved outward (diameter expansion direction) more greatly than in the case of the vertical pipe portion 361. Thermal expansion and vertical tube section 36
The distance between the inner peripheral surface S and the inner peripheral surface S is reduced. As a result, it is possible to obtain an effect that the sealability between the outer peripheral surface 43 of the sealing material 4B and the inner peripheral surface S of the vertical pipe portion 361 can be more strongly secured.

(Embodiment 4) A resin air cleaner 1C of Embodiment 4 will be described with reference to FIG. The resin air cleaner 1C according to the fourth embodiment has a vertical pipe portion 36 of the air outlet pipe 36c.
Upper housing 3 in which positioning rib 362 is formed on 1c
b, a cylindrical element 2C previously integrally connected
The construction is the same as that of the resin-made air cleaner 1 of the first embodiment except that the sealing material 4C is used. The same components are given the same reference numerals as in the first embodiment, and their explanations are omitted.

The upper housing 3b includes the vertical tube portion 3
A plate-shaped triangular positioning rib 362 is formed on the inner surface 61c so as to project from the inner peripheral surface S toward the center. Four positioning ribs 362 are integrally formed on the inner periphery of the vertical pipe portion 361c at regular intervals during molding of the upper housing 3b. Alternatively, the positioning rib 362 may be molded separately from the upper housing 3b and then bonded to the inner peripheral surface S of the vertical pipe portion 361c with an adhesive.

The cylindrical element 2C is directed toward the vertical pipe portion 361 of the air outlet pipe 36 of the upper housing 3b.
A cross-section substantially inverted L protruding to the front side of the ring-shaped end reinforcing plate 23
Inner peripheral tubular reinforcement plate 22 having a V-shaped extension 221c
has c. The sealing material 4C has a length of 15 mm and a thickness of 10 m.
At m, the outer diameter before being attached to the vertical pipe portion 361 of the air outlet pipe 36 of the upper housing 3b is set to 109 mm. The sealing member 4C has an extension portion 221c of the inner peripheral side cylindrical reinforcing plate 22c at a substantially central portion in the thickness direction during molding.
Is inserted.

According to the resin air cleaner 1C of the fourth embodiment, substantially the same action and effect as in the case of the first embodiment can be obtained, and when the sealing material 4C is inserted into the vertical pipe portion 361c, it is positioned on the vertical pipe portion 361c. Since the rib 362 is formed, the sealing material 4C is attached to the positioning rib 362.
Acts as a stopper when the upper end surface 42 of the
Moreover, it can be confirmed that it has been securely inserted to the proper position.
Further, since the extended portion 221c of the inner peripheral side cylindrical reinforcing plate 22c is inserted and fixedly held as the core material in the seal material 4C, it is reinforced by increasing rigidity and the sealing effect can be maintained for a long period of time. .

Further, since the sealing material 4C is fixedly held by the extension portion 221c of the inserted inner peripheral side cylindrical reinforcing plate 22c, as in the case of the sealing material 4 of the first embodiment,
It is not necessary to bond the lower end surface 41 to the ring-shaped end reinforcing plate 23 of the cylindrical element 2 with an adhesive. Further, the coefficient of thermal expansion of the extension portion 221c of the inner peripheral tubular reinforcing plate 22c made of metal is higher than the coefficient of thermal expansion of the vertical pipe portion 361c made of resin. Therefore, when the extension portion 221c is heated by the hot atmosphere during operation of the engine (it reaches a temperature of around 100 ° C. or higher), the vertical pipe portion 3
Thermal expansion in the outward direction (diameter expansion direction) is greater than in the case of 61c, and the distance between the vertical pipe portion 361c and the inner peripheral surface S is reduced. As a result, it is possible to obtain an effect that the sealability between the outer peripheral surface 43 of the seal material 4C and the inner peripheral surface S of the vertical pipe portion 361c can be more strongly secured.

(Embodiment 5) A resin air cleaner 1D of Embodiment 5 will be described with reference to FIG. The resin air cleaner 1D of the fifth embodiment has a vertical pipe portion 36 of the air outlet pipe 36d.
Same configuration as the resin air cleaner 1C of Example 4 except that a large diameter vertical pipe portion 363 having a horizontal wall portion 362 connected to an end of the vertical pipe portion 361d is formed on the air outlet 360d side of 1d. Is. The same components are given the same reference numerals as in the case of the fourth embodiment, and their explanations are omitted.

According to the resin air cleaner 1D of the fifth embodiment, when the sealing material 4D is inserted into the large diameter vertical pipe portion 363 of the vertical pipe portion 361d, the upper end surface 42 of the sealing material 4D contacts the horizontal wall portion 362 thereof. At that time, it can be confirmed that it works as a stopper and that it is securely inserted to the proper position. Further, since the outer peripheral surface 43 of the sealing material 4D abuts on the inner peripheral surface S1 of the large diameter vertical pipe portion 363 and the upper end surface 42 abuts on the horizontal wall portion 362, a sealing effect is obtained in two regions. be able to.

Therefore, the resin air cleaner 1 of the fifth embodiment.
In the case of D, the sealing effect can be further improved in addition to the fact that substantially the same action and effect as in the case of Example 1 and Example 4 can be obtained. Further, the coefficient of thermal expansion of the extension portion 221c of the inner peripheral tubular reinforcing plate 22c made of metal is larger than the coefficient of thermal expansion of the large diameter vertical pipe portion 363 made of resin. Therefore, when the extension portion 221c is heated by a hot atmosphere during operation of the engine (a temperature of around 100 ° C. or higher), the extension portion 221c is moved outwardly (in the radial expansion direction) more than in the case of the large diameter vertical pipe portion 363. ), And the space between the large-diameter vertical pipe portion 363 and the inner peripheral surface S1 is reduced. As a result, the outer peripheral surface 43 of the sealing material 4D and the large-diameter vertical pipe portion 36
The effect of being able to secure a stronger sealability with the inner peripheral surface S1 of 3 is obtained.

(Embodiment 6) A resin air cleaner 1E of Embodiment 6 will be described with reference to FIG. The resin air cleaner 1E of the sixth embodiment has a vertical pipe portion 36 of the air outlet pipe 36e.
The large-diameter vertical pipe portion 36 having a horizontal wall portion 362e connected to the air outlet 360e side of 1e about 5 mm above the end of the vertical pipe portion 361e and horizontally protruding to the outer peripheral side.
3e and ring-shaped groove-shaped recess 364 formed of these
The resin air cleaner 1 has the same configuration as that of the resin air cleaner 1 according to the first embodiment except that the upper housing 3e having the above-mentioned structure and the sealing material 4E inserted into the recess 364 are used. The same components are given the same reference numerals as in the first embodiment, and their explanations are omitted.

The sealing material 4E has a length of 15 mm and a thickness of 10
In mm, the outer diameter before being attached to the vertical pipe portion 361e of the air outlet pipe 36e of the upper housing 3e is set to 96 mm. The sealing member 4E has a lower end surface 41 which is substantially intermediate between the outer peripheral side cylindrical reinforcing plate 21 and the inner peripheral side cylindrical reinforcing plate 22 on the upper surface 230 of the ring-shaped end reinforcing plate 23 of the cylindrical element 2. It is adhered and fixed to the position by an adhesive agent not shown.

According to the resin air cleaner 1E of the sixth embodiment, when the cylindrical element 2 is mounted in the upper housing 3e, the sealing material 4E is provided in the recess 3 of the upper housing 3e.
Insert into 65. At the time of this insertion, its horizontal wall portion 362
It can be confirmed that when the upper end surface 42 of the sealing material 4E comes into contact with e, it acts as a stopper and is securely inserted to the proper position.

Then, the sealing material 4E includes the upper housing 3e and the ring-shaped end reinforcing plate 2 of the cylindrical element 2E.
It is sandwiched between the upper surface 230 and the upper surface 230 and pressed. Therefore, the sealing material 4E is bent in the recess 364 of the upper housing 3e by the tightening force acting in the direction along the axis P (see FIG. 1), and the axis P from the inner surface S2 of the recess 364. And a radial direction perpendicular to the axis P, and abut and closely seal. In this way, the sealing material 4E abuts almost the entire area of the inner surface S2 of the recess 364.

That is, in the sealing material 4E, the lower end surface 41 is the upper surface 2 of the ring-shaped end reinforcing plate 23 of the cylindrical element 2.
The outer peripheral surface 43, the inner peripheral surface 40, and the upper end surface 42, which are bonded and fixed to an adhesive 30 by an adhesive, respectively have an inner peripheral side of the large diameter vertical pipe portion 363e, an outer peripheral side of the vertical pipe portion 361e, and a horizontal wall. Abuts three areas of portion 362e, and
A sealing effect can be obtained in two areas.

Then, similarly to the case of the first embodiment, the seal member 4E and the cylindrical element 2E are connected between the upper housing 3b and the lower housing 3a shown with reference to FIG. The lower housing 3a and the upper housing 3b are fastened and connected by engaging the locking tool 51 of the portion 5 with the hooking projection 52.

Therefore, the resin air cleaner 1 according to the sixth embodiment.
In the case of E, the sealing effect can be further improved in addition to the fact that the substantially same operational effect as in the case of the first embodiment can be obtained. Further, as a modification of the sixth embodiment, contrary to the case of the sixth embodiment, prior to the assembly of the resin air cleaner 1E, the sealing material 4E is omitted from the upper end surface 42 side in the recess 365 of the upper housing 3e. Even if the upper surface 230 of the ring-shaped end portion reinforcing plate 23 of the cylindrical element 2 is brought into contact with the lower end surface 41 of the sealing material 4E after being adhered and fixed by the adhesive of FIG. Almost the same effect can be obtained.

(Embodiment 7) A resin air cleaner 1F of Embodiment 7 will be described with reference to FIG. The resin air cleaner 1F of the seventh embodiment uses a cylindrical element 2F and a sealing material portion 4F which are integrally formed with each other, instead of using the cylindrical element 2 and the sealing material 4 of the first embodiment (see FIG. 2). Except for the above, the configuration is the same as that of the first embodiment. The same components are given the same reference numerals as in the first embodiment, and their explanations are omitted.

The cylindrical element 2A faces the vertical pipe portion 361 of the air outlet pipe 36 of the upper housing 3b.
An outer peripheral side cylindrical reinforcing plate 21, a filter medium 20, an inner peripheral side is used while using an inner peripheral side cylindrical reinforcing plate portion 22f in which an extension portion 221f projecting forward about 15 mm from the upper end of the outer peripheral side cylindrical reinforcing plate 21 is formed. By insert-molding together with each of the annular end surfaces of the cylindrical reinforcing plate portion 22f,
It is provided as a ring-shaped body having a substantially L-shaped cross section, which is composed of a resin-made ring-shaped end elastic portion 23f integrally formed with each other and a resin-made sealing material portion 4F.

The ring-shaped end elastic portion 23f has a thickness of 5 m.
m. The sealing material 4F has a length of 15 mm and a thickness of 10 m.
At m, the outer diameter of the air outlet pipe 36 of the upper housing 3 before being attached to the vertical pipe portion 361 is set to 109 mm. Although the ring-shaped end elastic portion 23f is shown as being used in place of the metal ring-shaped end reinforcing plate 23 of the first embodiment, the present invention is not limited to this and, for example, is not shown. The metal ring-shaped end reinforcing plate may be covered with a resin layer integrally formed with the sealing material portion 4F.

According to the resin air cleaner 1F of the seventh embodiment, when the cylindrical element 2f is mounted on the upper housing 3, the sealing material portion 4F is inserted into the vertical pipe portion 361 of the air outlet pipe 36. Then, the sealing material portion 4F is
While the outer peripheral surface 43 is in contact with the inner peripheral surface S of the vertical pipe portion 361, the ring-shaped end elastic portion 23f of the cylindrical element 2f is inserted to a position where it abuts the ceiling wall portion 35 of the upper housing 3b. Complete.

Therefore, the resin air cleaner 1 of the seventh embodiment
In F, the outer peripheral surface 43 of the sealing material portion 4F is the vertical pipe portion 36.
1, the ring-shaped end elastic portion 23f of the cylindrical element 2f abuts on the inner peripheral surface S of the upper housing 3 of the ceiling wall portion 3 of the upper housing 3.
5 and a sealing effect can be obtained in two areas each. In addition, the seal member portion 4F includes an extension portion 2 of the inner peripheral side cylindrical reinforcing plate portion 22f of the cylindrical element 2f.
21f is inserted, and the ring-shaped end elastic portion 23f
Since the filter material 20 and the annular end surface of the outer peripheral side tubular reinforcing plate 21 are inserted in the inner side of the inner wall, the rigidity is increased and the sealing effect can be maintained for a long time.

Since the sealing material portion 4F is formed integrally with the ring-shaped end elastic portion 23f,
Unlike the case of the sealing material 4 of the first embodiment shown in FIGS. 1 and 2, it is not necessary to bond the lower end surface 41 to the ring-shaped end reinforcing plate 23 of the cylindrical element 2 with an adhesive. Further, the coefficient of thermal expansion of the extension portion 221f of the inner circumferential side cylindrical reinforcing plate portion 22f made of metal is determined by the vertical pipe portion 361 made of resin.
It has a large thermal expansion coefficient. Therefore, the extension 221f
When heated by a hot atmosphere (the temperature becomes around 100 ° C. or higher) during engine operation, the thermal expansion of the vertical pipe portion 361 is larger than that of the vertical pipe portion 361 in the outward direction (diameter expansion direction). The space between the inner peripheral surface S of the portion 361 is reduced. As a result, it is possible to obtain an effect that the sealing property between the sealing material portion 4F and the inner peripheral surface S of the vertical pipe portion 361 can be more strongly secured.

In the first to sixth embodiments, the metal ring-shaped end reinforcing plates 23 and 23b are used for the cylindrical elements 2, 2B and 2C, but the present invention is not limited to this. For example, each of them is made of resin, and each of the metal ring-shaped end reinforcing plates 23 and 23b in the first and third to sixth embodiments is provided with the sealing members 4 and 4B. 4C and 4E, which are made of resin integrally molded with each other, and metal ring-shaped end reinforcing plates 23 and 2 in Examples 1 and 3 to 6.
It is also possible to cover 3b with a resin layer integrally molded with the sealing materials 4 and 4B.

In any of the above cases, the sealing effect can be improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a resin air cleaner according to a first embodiment.

FIG. 2 is an enlarged partial sectional view showing an enlarged main part in FIG.

FIG. 3 is an enlarged partial sectional view showing an enlarged main part of a resin air cleaner according to a second embodiment.

FIG. 4 is an enlarged partial cross-sectional view showing an enlarged main part of a resin air cleaner according to a third embodiment.

FIG. 5 is an enlarged partial sectional view showing an enlarged principal part of a resin air cleaner according to a fourth embodiment.

FIG. 6 is an enlarged partial sectional view showing an enlarged principal part of a resin air cleaner according to a fifth embodiment.

FIG. 7 is an enlarged partial cross-sectional view showing an enlarged main part of a resin air cleaner according to a sixth embodiment.

FIG. 8 is an enlarged partial sectional view showing an enlarged main part of a resin air cleaner according to a seventh embodiment.

[Explanation of symbols]

1, 1A, 1B, 1C, 1D, 1E, 1F ... Resin air cleaner 2 ... Cylindrical element 3a ... Lower housing 3b, 3d, 3e ... Upper housing 4, 4A, 4B, 4C, 4E ... Cylindrical sealing material 4F …
Cylindrical sealing material portion 5 ... Fastening portion

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yukihisa Horiko, 1-1, Toyota-cho, Kariya-shi, Aichi Toyota Boshoku Co., Ltd. (72) Inventor, Koji 1-chome, Toyota-cho, Kariya, Aichi Toyota Boshoku Co., Ltd. In-house (72) Inventor Hirotsugu Kojima 1-1-1 Toyota-cho, Kariya city, Aichi Toyota Boshoku Co., Ltd. (56) References JP53-2763 (JP, A) JP59-85472 (JP, A ) Japanese Unexamined Patent Publication No. 4-234556 (JP, A) Actually developed 54-156010 (JP, U) Actually developed 4-81624 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) F02M 35/024 501 B01D 46/02 B01D 46/24

Claims (2)

(57) [Claims] 1. A combination of a first resin housing having an air introducing pipe and a second resin housing having an air discharging pipe, or a second having a first resin housing, an air introducing pipe and an air discharging pipe. A resin air cleaner comprising a combination with a resin housing, a tubular element housed inside the first and second resin housings, and a fastening portion for fastening the first and second resin housings. In the first and second resin housings, a seal material is fixedly provided on either one of an end portion of the tubular element facing the air outlet pipe or an inner wall of the air outlet pipe. Is fastened by the fastening portion, the seal material is brought into contact with the side not fixed to seal the inner wall and the tubular element. 2. A combination of a first resin housing having an air introduction pipe and a second resin housing having an air discharge pipe, or a second resin housing and a second resin housing having an air introduction pipe and an air discharge pipe. A resin air cleaner comprising a combination with a resin housing, a tubular element housed inside the first and second resin housings, and a fastening portion for fastening the first and second resin housings. A seal member fixed to either an end portion of the tubular element facing the air outlet pipe or a recess formed in an inner wall connected to the air outlet pipe. , When the second resin housing is fastened by the fastening portion, the seal material is brought into contact with the side not fixed, and the seal material is along the axis of the tubular element. Not Shiwawa by the clamping force acting on the direction,
An air cleaner made of resin, which abuts against an inner surface of the recess in a direction along the axis and a radial direction perpendicular to the axis to seal the inner surface of the recess.