JP4831355B2 - Air cleaner - Google Patents

Description

  The present invention relates to an air cleaner connected to an intake side of an internal combustion engine such as a vehicle engine.

  Conventionally, as this type of air cleaner, as disclosed in Patent Document 1 and Patent Document 2, for example, a configuration in which a filter such as a cylindrical honeycomb type having vents at both ends is detachably accommodated in a housing is known. It has been. In these air cleaners, after the air introduced from the inlet of the housing flows into the filter from the vent on one end of the filter and is filtered, the outlet of the housing from the vent on the other end of the filter It is led out of the housing via the and is configured to be supplied to the suction side of the internal combustion engine.

  In this case, in the air cleaner described in Patent Document 1, the housing is divided on a plane orthogonal to the axial direction in order to insert and remove the filter. For this reason, a housing is comprised by the inflow side housing part and the outflow side housing part, and these both housing parts are assembled | attached to the opening edge part so that attachment or detachment is possible. An annular element guide is fitted to the outer peripheral edges of both ends of the cylindrical filter. An annular seal material is attached to the flange portion of the element guide on one end side, and this seal material is sandwiched between the open end portions of the inflow side housing portion and the outflow side housing portion when the filter is attached to the housing. A leaf spring is arranged on the inner surface of the housing so as to be positioned between the element guide on the other end side and the inner surface of the housing, and the filter is held in the housing by the elastic force of the leaf spring when the filter is assembled to the housing. Is done.

  Moreover, in the air cleaner of patent document 2, the opening for putting in and out a filter is formed in the surrounding wall of a housing. An annular frame member projects from the outer peripheral edge of one end of the cylindrical filter, and a sealing material is attached to the tip of the frame member. An annular band having an L-shaped cross section is attached to the outer peripheral edge of the other end of the filter. This band is attached so as to block the ventilation hole through which the air of the filter passes. And the contact surface which can contact | abut the side surface of the sealing material on a filter is formed in the internal peripheral surface of the one end side of a housing. On the inner peripheral surface on the other end side of the housing, an inclined cam surface that is inclined so as to gradually approach the abutting surface side from the opening side toward the back of the housing is formed. Further, a cover that covers a part of the peripheral wall of the housing by closing the opening of the housing in a mounted state of the filter with respect to the housing is attached to the outside of the filter.

When the filter is inserted into the housing from the opening of the housing, the band on the filter engages with the inclined cam surface in the housing, and the cam action moves the filter in the axial direction toward the contact surface side. The By this movement, the side surface of the sealing material on the filter is brought into contact with the contact surface in the housing, and the filter is positioned at a predetermined position in the housing. At the same time, the outer peripheral surface of the sealing material is pressed against the inner peripheral surface of the housing, and the filter is supported in an airtight state in the housing.
No. 2-331131 JP 2005-524797 A

However, this conventional air cleaner has the following problems.
First, in the air cleaner described in Patent Document 1, the housing is divided into an inflow side housing part and an outflow side housing part along the axial direction. Therefore, when removing and replacing the filter in the housing, the two housing parts in a state where the ducts are connected to the introduction port of the air introduction side housing part and the lead out port of the air outlet side housing part are separated from each other, It is necessary to open a large area around the opening of the housing part on the mounting side. Therefore, it is necessary to forcefully move both housing parts for removing and attaching the filter, and there is a problem that it is difficult to replace the filter with respect to the housing.

  Further, in the air cleaner described in Patent Document 2, since the outer peripheral portion of the filter vent is blocked by the annular band, the passage area of the filter is reduced and the air flow is disturbed, and the filtration function There was a problem that decreased.

  Furthermore, the air cleaner described in Patent Document 2 is configured such that the entire filter is sandwiched in the housing by a cam action based on the engagement between the band and the inclined cam surface in the housing. For this reason, a large external load may act on the filter. In such a case, the filter is likely to be deformed such as crushing or bending. If the filter is deformed, the filtration function may be lowered, and it is difficult to accurately position and hold the filter at a predetermined position in the housing.

  Furthermore, in Patent Document 2, since a cover that constitutes a part of the housing is attached to the filter, the filter that is a consumable becomes expensive, and a disadvantage in maintenance cannot be avoided.

  The present invention has been made paying attention to such problems existing in the prior art. The purpose of the filter is that the filter can be easily replaced in the housing, and the filter can be accurately positioned and held at a predetermined position in the housing in an airtight state, so that a high filtration function can be obtained. In addition, the object is to provide an air cleaner that is less expensive.

In order to achieve the above object, the present invention detachably accommodates a cylindrical filter having vents at both ends in a housing, and air introduced from the inlet of the housing is connected to one end of the filter. In the air cleaner, the air cleaner is introduced into the filter from the first ventilation port and filtered and then led out of the housing from the second ventilation port on the other end side of the filter through the housing outlet. Is formed of a housing body in which an opening for inserting and removing a filter is formed on a peripheral wall, and a lid body capable of opening and closing the opening of the housing body, and the filter is hermetically sealed with an element having a filtering function and an outer periphery of the element. An annular sealing material wound in a shape, and the sealing material is attached to the outer peripheral surface of the housing in a mounted state of the filter Together is supported in an airtight manner to the seal receiving surface of the annular formed on the inner peripheral surface of the Oite housing body, the inner surface side of the regulating surface both sides formed on the inner surface of the housing body of the sealing member and the lid member It is characterized in that the position is regulated by the regulation surface formed in the above.

  Therefore, when removing and replacing the filter in the housing, the cover on the opening of the housing main body is opened, and the filter can be easily exchanged into the housing main body through the opening. In addition, when the filter is mounted in the housing body and the opening of the housing body is closed with a lid, the outer peripheral surface of the sealing material on the filter is pressed against the seal receiving surface in the housing body, and both side surfaces of the sealing material are The position of the housing body and the lid body is regulated by contacting the regulation surface. Therefore, the filter can be accurately positioned and held at a predetermined position in the housing on one end side in an airtight state. Furthermore, since there is no member that closes the openings at both ends of the filter, it is possible to prevent the air passage area from being reduced or the air flow from being disturbed in the mounting state of the filter with respect to the housing. You can also. In addition, since the lid that closes the opening of the housing body is provided separately from the filter, it is possible to prevent the filter from becoming expensive.

Further, in the above configuration, by providing a protrusion for supporting the outer peripheral surface of the filter element on the inner surface of the housing main body and the lid, the outer peripheral surface of the filter is provided by the protrusion in the housing main body and the lid. It can be stably held at a predetermined position in the housing from the side.

Further, in the configuration described above, between the regulating surface and the projection of the housing body, by forming a gap for fitting the sealing member, on the side not formed opening of the housing body In the peripheral wall portion, the position is regulated by fitting the sealing material into the gap between the regulating surface and the protrusion. Therefore, the filter can be more accurately positioned and held at a predetermined position in the housing.

  Furthermore, in the said structure, it is good to comprise the control surface of the said cover body with the flange formed in the cover body. In this case, when the opening of the housing body is closed by the lid body, the flange is disposed opposite to the regulation surface in the housing body, and the position of both side surfaces of the sealing material on the filter is regulated between them. can do.

  Furthermore, in the said structure, it is good to form the flange of the said cover body in connection with a protrusion. In the case of such a configuration, the flange can be reinforced by connecting with the protrusion.

  Further, in the above configuration, the sealing material may be configured by a core material having rigidity and a sealing member made of a flexible elastic material whose inner peripheral surface side is held by the core material. When configured in this manner, it is possible to prevent the seal member from being elastically deformed to the inner peripheral surface side, that is, the element side in a state where the filter is attached to the housing. Therefore, the sealing performance between the seal receiving surface and the sealing material can be ensured, and the filter element can be prevented from being pressed and deformed.

  As described above, according to the present invention, the filter can be easily replaced in the housing, and the filter can be accurately positioned and held at a predetermined position in the housing in an airtight state. Cost burden associated with filter replacement can be reduced.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 3, 5, and 6, an air cleaner housing 11 of this embodiment includes a substantially cylindrical housing body 12 having a filter wall opening 12 a formed in a peripheral wall, and the housing body 12. And a substantially semi-cylindrical lid 13 attached to the opening 12a so as to be openable and closable. On one side wall of the housing main body 12, an introduction port 14 that communicates with outside air and introduces air into the housing 11 is formed to protrude. This inlet 14 is opened to the atmosphere. On the other side of the introduction port 14, a lead-out port 15 for leading out air from the housing 11 is formed on the other side wall of the housing body 12. The outlet 15 is connected to an intake side of an internal combustion engine such as a vehicle engine, and air from the outlet 15 is taken into the internal combustion engine. An air flow path 16 extending in the lateral direction of FIG. 2 from the inlet 14 toward the outlet 15 is formed in the housing 11.

  As shown in FIGS. 2 and 3, in the air flow path 16 of the housing 11, a cylindrical filter 17 is detachably accommodated with its axis lined along the air flow direction of the air flow path 16. Has been. The filter 17 is inserted into and removed from the housing body 12 through the opening 12 a of the housing body 12.

  The filter 17 includes an element 18 having a filtering function, and an annular seal material 19 that is airtightly wound and fixed to the outer periphery of the end of the element 18 on the side corresponding to the outlet 15. Yes. The element 18 is formed so as to form a cylindrical honeycomb structure as a whole by winding a laminated material 20 composed of a flat filter medium 20a and a corrugated filter medium 20b in a spiral shape. A plurality of air passages 21 are defined by the corrugated filter medium 20b between the flat filter media 20a of the laminated material 20 arranged in a spiral shape.

  As shown in FIGS. 2 and 3, for the first air passages 21 a adjacent to every other air passage 21, the introduction side end corresponding to the introduction port 14 is opened and guided. The outlet side end corresponding to the outlet 15 is sealed with a sealing material 22. On the other hand, with respect to the remaining second air passage 21b, the introduction side end is sealed by the sealing material 23 and the lead-out side end is opened. With this configuration, as shown in FIGS. 2 and 3, a first vent 18 a is formed at the introduction side end of the element 18, and a second vent 18 b is formed at the lead-out end. . Then, as shown by arrows in FIG. 2, the air introduced into the housing 11 from the introduction port 14 is introduced into the first air passages 21a from the first ventilation holes 18a of the element 18, and the flat filter medium 20a. Or it filters by passing the wave-shaped filter medium 20b. Thereafter, the air is led out from the second vent hole 18b of the element 18 through the second air passages 21b, and is further sent out of the housing 11 through the lead-out port 15.

  As shown in FIGS. 2 and 4, the seal material 19 of the filter 17 includes a rigid synthetic resin core material 24 and a seal member 25 made of a flexible elastic material such as urethane. The core member 24 is integrally formed with a disc portion 24a and a cylindrical portion 24b. The sealing member 25 is joined and formed on one side surface of the disk portion 24a of the core member 24, and embeds the cylindrical portion 24b. The core member 24 holds the inner peripheral surface side of the seal member 25 so as not to be deformed to the element 18 side, and the portion of the seal member 25 of the element 18 is not deformed.

Next, a configuration for positioning the filter 17 at a predetermined position in the housing 11 will be described.
As shown in FIGS. 2, 4, and 5, an annular seal receiving surface 26 is formed on the inner peripheral surface of the end portion of the housing body 12 corresponding to the outlet 15. When the filter 17 is assembled in the housing body 12, the outer peripheral surface of the seal member 25 of the seal material 19 is pressed against the seal receiving surface 26. At this time, the outer peripheral portion of the core member 24 of the seal member 25 is elastically deformed from the original state indicated by the chain line in FIG. 4 to the compressed state indicated by the solid line. By this deformation, the filter 17 is held in an airtight state on the inner periphery of the housing main body 12 at the outer periphery of the end portion on the outlet port 15 side, and sealing performance is ensured.

  As shown in FIGS. 2, 4, and 5, an annular regulating surface 27 is formed on the inner peripheral surface of the end portion of the housing body 12 so as to be perpendicular to the seal receiving surface 26. When the filter 17 is attached to the housing body 12, the position of the filter 17 is regulated so that the filter 17 does not move toward the outlet 15 by contacting the outer surface of the sealing material 19 with the regulating surface 27.

  As shown in FIGS. 2, 3, and 5, a plurality of long protrusions 28 are formed on the inner surface of the peripheral wall of the housing body 12 corresponding to the opening 12 a of the housing body 12. They are formed so as to be spaced apart from each other in the circumferential direction and to extend parallel to the air flow direction. As shown in FIGS. 2, 5, and 7, a gap S <b> 1 for fitting the sealing material 19 is formed between the end of each protrusion 28 and the regulating surface 27. When the filter 17 is attached to the housing body 12, the seal member 19 is fitted into the gap S1 in the peripheral wall portion of the housing body 12 on the side where the opening 12a is not formed, so that the filter 17 is connected to the outlet 15. The position is regulated so that it does not move to the opposite side of. At the same time, the outer peripheral surface of the element 18 of the filter 17 is brought into contact with each protrusion 28, whereby the filter 17 is supported from the outer peripheral surface side.

  As shown in FIG. 1 to FIG. 3 and FIG. 6, stepped joints 29 and 30 are formed to protrude from both side edges of the lid 13 and the edge of the end corresponding to the inlet 14. When the lid 13 is attached to the opening 12a of the housing body 12, the joints 29 and 30 are joined to the outer surface of the peripheral wall of the housing body 12 along the periphery of the opening 12a, thereby closing the opening 12a. Is done.

  As shown in FIGS. 2, 4, and 6, a flange 31 protrudes inwardly on the edge of the lid 13 on the side corresponding to the outlet 15, and the outer surface of the flange 31 is restricted. A surface 31a is formed. When the lid 13 is attached to the opening 12 a of the housing body 12, the restriction surface 31 a of the flange 31 is disposed to face the restriction surface 27 in the housing body 12 with a predetermined interval. In this state, the side surface of the sealing material 19 on the filter 17 is brought into contact with the restriction surface 31 a, so that the filter 17 does not move to the opposite side of the outlet 15 in the portion where the opening 12 a is formed in the housing body 12. The position is restricted.

  As shown in FIGS. 2 to 4 and 6, a plurality of block-shaped protrusions 32 each having a plurality of ribs are formed on the inner surface of the lid body 13 at intervals in the circumferential direction and the axial direction. ing. Among these protrusions 32, a pair of protrusions 32 arranged close to the flange 31 are formed integrally with the flange 31 so as to be connected to the inner surface of the flange 31 so as to reinforce the flange 31. Yes. When the lid 13 is attached to the opening 12 a of the housing body 12, the filter 17 is held from the outer peripheral surface side by contacting the outer peripheral surface of the element 18 of the filter 17 with the ribs of the protrusions 32.

  As shown in FIGS. 1, 2, and 5 to 8, a pair of locking projections 33 is formed on the outer peripheral surface of the housing body 12 on the introduction port 14 side corresponding to the lower end edge of the opening 12 a of the housing body 12. Are integrally formed. A pair of locking hooks 34 that are continuous with the lower edge 29 a of the joint 29 are formed at the ends of the joints 29 on both sides of the lid 13 so as to be able to be engaged with and disengaged from both the locking projections 33. An inclined surface 34 a for facilitating the entry of the locking projection 33 into the locking hook 34 is formed at the opening end of each locking hook 34. In addition, an arc-shaped pressure contact surface 34b is formed at the back of each locking hook 34 to strengthen locking with the locking projection 33 by cam action. When the lid 13 is attached to the opening 12 a of the housing body 12, these locking hooks 34 are engaged with the respective locking projections 33, so that the lid 13 is on the side corresponding to the introduction port 14. It is latched and held by the housing body 12 at the end.

  As shown in FIGS. 1 and 3 to 5, a pair of support portions 35 project from the outer surface of the end portion of the lid 13 corresponding to the outlet 15, and a clamp member is provided on the support portions 35. 36 is rotatably supported by a support shaft 37. A pair of hooked portions 38 are formed on the outer peripheral surface of the housing main body 12 so as to be detachable from the clamp members 36. Then, in a state where the lid body 13 is attached to the opening 12 a of the housing body 12, each clamp member 36 is hooked and clamped by the hooked portion 38, so that the lid body 13 corresponds to the outlet 15. At the end on the side, the housing body 12 is held closed and locked.

  Next, in the air cleaner configured as described above, an operation when the filter 17 is mounted in the housing body 12 when the filter 17 in the housing 11 is attached or detached will be described.

  When the filter 17 is mounted, the filter 17 is inserted into the housing body 12 from the opening 12a of the housing body 12 and moved toward the outlet 15 as shown in FIG. In this way, as shown in FIG. 2, the sealing material 19 is fitted into the gap S <b> 1 between the protrusion 28 in the housing body 12 and the regulating surface 27 on the side opposite to the opening 12 a. At the same time, the outer peripheral surface of the sealing material 19 of the filter 17 is pressed against the seal receiving surface 26 of the housing body 12. Further, the outer peripheral surface of the element 18 of the filter 17 is brought into contact with the protrusion 28 in the housing main body 12 so that the filter 17 is supported from the outer peripheral surface side.

  In this state, the lid body 13 is attached to the opening 12 a of the housing body 12. When the lid body 13 is attached, as shown in FIG. 8A, the lid body 13 is opened 12a at a position where the locking hook 34 of the lid body 13 and the locking projection 33 of the housing body 12 can be engaged. It is mounted on the housing main body 12 in this part. Then, as shown in FIG. 8 (b), the lower end edge 29 a of the side joint portion 29 of the lid body 13 is opposed to a position where it can abut against the both locking projections 33 on the housing body 12. Thereafter, when the lid body 13 is moved to the outlet 15 side of the housing body 12, the latching hooks 34 on the lid body 13 side are engaged with the latching projections 33 on the housing body 12 as shown in FIG. Is engaged. By this engagement, the lid 13 is locked and held with respect to the housing main body 12 at the end corresponding to the introduction port 14.

  When the lid 13 is attached, when the lid 13 is moved to the outlet 15 side, as shown in FIGS. 2 and 4, the restriction surface 31 a of the flange 31 on the lid 13 seals the filter 17. It contacts the side surface of the material 19. For this reason, in the upper half portion in FIG. 2 where the opening 12a is formed in the housing body 12, the sealing material 19 is sandwiched between the regulation surface 27 of the housing body 12 and the regulation surface 31a of the lid 13.

  Therefore, in the lower half portion in FIG. 2 where the opening 12a of the housing body 12 is not formed, the sealing material 19 is fitted in the gap S1 between the protrusion 28 in the housing body 12 and the regulating surface 27. In combination, the filter 17 can be accurately positioned and held at a predetermined position in the housing body 12.

  After that, if each clamp member 36 on the lid 13 side is engaged with each latching portion 38 on the housing body 12 side, the lid 13 is clamped on the housing body 12 at the end corresponding to the outlet 15. Is done. In this state, the lid 13 is held in a locked state on the inlet 14 side and the outlet 15 side, so that the opening 12a of the housing body 12 is held closed by the lid 13.

  In this state, the sealing property between the sealing material 19 and the seal receiving surface 26 is ensured. For this reason, with the operation of the internal combustion engine, air is introduced from the inlet port 14 and appropriately filtered by the element 18 of the filter 17, and the filtered air is sucked into the internal combustion engine from the outlet port 15.

  When dust accumulates on the element 18 of the filter 17 and the element 18 needs to be cleaned or replaced, the filter 17 is taken out from the housing 11 in the reverse order of the mounting order of the filter 17 described above.

In this embodiment, the following effects can be obtained.
(1) In the air cleaner of this embodiment, when removing and replacing the filter 17 in the housing 11, if the lid 13 on the opening 12a of the housing body 12 is removed, the housing body 12 to which the duct is connected is not moved. The opening 12a can be opened. Therefore, the removal work of the filter 17 can be easily performed through the opening 12a.

  (2) When the filter 17 is attached in the housing main body 12 and the opening 12 a of the housing main body 12 is closed by the lid 13, the outer peripheral surface of the sealing material 19 on the filter 17 is the seal receiving surface 26 in the housing main body 12. The both side surfaces of the sealing material 19 are in contact with the regulating surfaces 27 and 31a in the housing main body 12 and the lid body 13 and are regulated in position. Therefore, the filter 17 can be accurately positioned and held at a predetermined position in the housing 11 without an external force acting on the element 18 being deformed. Therefore, the filter 17 can exhibit a high filtration function.

  (3) Since a gap S1 for fitting the sealing material 19 is formed between the regulating surface 27 and the protrusion 28 in the housing body 12, the sealing material 19 is fitted into the gap S1. Thus, the position of the filter 17 can be regulated with respect to the housing 11 even in the peripheral wall portion of the housing body 12 on the side where the opening 12a is not formed.

  (4) Since there are no members that block the air vents 18a, 18b at both ends of the filter 17, the air passage area is reduced or the air flow is disturbed. Can be suppressed. Therefore, also in this respect, the filter 17 can exhibit a high filtration function.

  (5) Since the protrusions 28 and 32 for supporting the outer peripheral surface of the element 18 of the filter 17 are provided on the inner surfaces of the housing body 12 and the lid body 13, the filter 17 is formed by these protrusions 28 and 32. Can be stably held at a predetermined position in the housing 11 from the outer peripheral surface side.

(6) Since the flange 31 of the lid body 13 is formed integrally with the protrusion 32, the flange 31 can be reinforced by the protrusion 32.
(7) The sealing material 19 includes a rigid core material 24 and a sealing member 25 made of a flexible elastic material whose inner peripheral surface is held by the core material 24. For this reason, it is possible to suppress the core member 24 from elastically deforming the inner peripheral surface side of the seal member 25 in a state in which the filter 17 is attached to the housing 11. Accordingly, it is possible to prevent the element 18 of the filter 17 from being pressed and deformed, and not only to maintain a high filtration function, but also to prevent the seal member 25 from escaping to the element 18 side and to achieve a high seal. Can maintain sex.

  (8) Since the opening 12a of the housing main body 12 is closed by the lid body 13 separate from the filter 17, it is not necessary to attach the lid body to the filter, and the cost burden such as maintenance is reduced by using an inexpensive filter. it can.

(Example of change)
In addition, this embodiment can also be changed and embodied as follows.
In the above embodiment, the element 18 of the filter 17 is formed in a cylindrical shape, but the element 18 may be formed in another cylindrical shape such as an elliptical cylindrical shape or a substantially rectangular cylindrical shape.

  In the above embodiment, the lid 13 is detachable from the opening 12 a of the housing body 12, that is, the lid 13 is provided separately from the housing body 12. It may be attached to the opening 12a so as to open and close.

The perspective view which shows the air cleaner of one Embodiment. FIG. 2 is an enlarged longitudinal sectional view of the air cleaner in FIG. 1. Sectional drawing in the 3-3 line of FIG. FIG. 4 is a partially enlarged cross-sectional view taken along line 4-4 of FIG. The perspective view which shows the housing main body of the air cleaner of FIG. The perspective view which shows the cover body of the air cleaner. Sectional drawing which decomposes | disassembles and shows the housing main body of the same air cleaner, a filter, and a cover body. (A)-(c) is a partial front view which shows in order the process which latches a cover body to a housing main body.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Housing, 12 ... Housing main body, 12a ... Opening, 13 ... Cover body, 14 ... Inlet port, 15 ... Outlet port, 17 ... Filter, 18 ... Element, 18a ... 1st ventilation port, 18b ... 2nd ventilation port, DESCRIPTION OF SYMBOLS 19 ... Seal material, 24 ... Core material, 25 ... Seal member, 26 ... Seal receiving surface, 27 ... Restriction surface, 28 ... Projection, 31 ... Flange, 31a ... Restriction surface, 32 ... Projection, S1 ... Gap.

Claims (4)

A cylindrical filter having ventilation holes at both ends is detachably accommodated in the housing, and air introduced from the introduction port of the housing flows into the filter from the first ventilation port on one end side of the filter. After being filtered, in the air cleaner that is led out of the housing from the second vent on the other end side of the filter through the outlet of the housing,
The housing includes a housing body in which an opening for inserting and removing a filter is formed on a peripheral wall, and a lid body that can open and close the opening of the housing body. The filter includes an element having a filtering function, and an outer periphery of the element. And an annular sealing material wound in an airtight manner,
When the filter is mounted on the housing, the seal member is supported on an outer peripheral surface of the seal member on an annular seal receiving surface formed on the inner peripheral surface of the housing body, and both side surfaces of the seal member are supported on the inner surface of the housing body. The position is regulated by the regulation surface formed on the side and the regulation surface formed on the inner surface side of the lid,
The inner surface of the housing body and the lid, a projection for supporting the outer peripheral surface of the element of the filter is provided, between the said regulating surface of the housing body projections, fitting said seal member An air cleaner characterized by forming a gap for the purpose. The air cleaner according to claim 1 , wherein the restriction surface of the lid is configured by a flange formed on the lid. An air cleaner according to claim 1 or 2, characterized in that the formation of the flange of the lid and connected with projections. The said sealing material is comprised with the core material which has rigidity, and the sealing member which consists of a flexible elastic material by which the inner peripheral surface side was hold | maintained with the core material, The any one of Claims 1-3 characterized by the above-mentioned. The air cleaner according to one item.

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