JP2018138801A - Gasket with filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gasket with a filter capable of fastening a filter member to a gasket body simply at low cost, and further capable of sufficiently exhibiting filter function.SOLUTION: A gasket 10 with a filter includes: a gasket body where a through hole part 22 is provided on a part of a plane of a metal plate, and a seal bead part 23 is provided around the through hole part 22; and a filter member 30 arranged at the through hole part 22, and fixed to the gasket body. The gasket body includes a projection part 25 projecting toward one side of a thickness direction. The filter member 30 is pushed against the projection part 25 in fastening the gasket 10 with a filter.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a gasket with a filter having a filter function and a seal function. The gasket with a filter of the present invention is used, for example, in the field related to automobiles and used as various seal parts.

  2. Description of the Related Art Conventionally, an EGR mechanism equipped with a cooling device has been incorporated in accordance with the reduction in fuel consumption and emission of automobiles, and this cooling device is used for cooling EGR gas in the EGR mechanism.

  However, since this cooling device has a complicated internal structure, there is a possibility that a foreign matter in the EGR gas may adhere to the fins of the cooling device, resulting in a decrease in cooling efficiency or a foreign matter that destroys the fins of the cooling device. Further, when the cooling device is a water-cooling type, if the cooling device is damaged by foreign matter, coolant may enter the engine cylinder and the engine may break down. For this reason, a filter for trapping foreign matter is provided in the cooling device (inlet), but it cannot be removed, so there is a disadvantage that the maintainability is poor.

  On the other hand, as shown in FIGS. 5 and 6, conventionally, a gasket 510 with a filter in which a gasket at a flange joint (not shown) in front of the cooling device and a filter are integrated is used.

  Here, in the gasket with filter 510 shown in FIG. 5, a seal portion 550 made of a rubber-like elastic body is integrally formed around a filter member 520 that exhibits a filter function by applying a hole processing 520c to a planar part of a metal plate. This is a molded gasket 510 with a so-called single layer filter.

  Moreover, the gasket 510 with a filter shown in FIG. 6 has an extended portion 520a extending in the inner diameter direction from the inner peripheral side end portion on the one surface 521a side in the thickness direction of the metal plate and the other surface in the thickness direction of the metal plate. A gasket body 520 having a holding portion 520b extending in the inner diameter direction from the inner peripheral side end portion on the 521b side, a frame 531 engaged between the extending portion 520a and the holding portion 520b, and the frame This is a so-called laminated filter-equipped gasket provided with a filter member 530 fixed inside 531.

  According to the gasket 510 with a filter shown in FIGS. 5 and 6, since the filter member 530 is integrated with the gasket, the filter member 530 can be replaced in the same manner as when the gasket is replaced, and the maintainability is good. .

  However, the gasket with filter 510 having the above configuration has room for further improvement in the following points.

  That is, the filter-equipped gasket 510 shown in FIG. 5 is manufactured because the filter member 530 is formed by applying a hole processing 520c to a metal plate, and the seal portion 550 is integrally formed around the filter member 530. Costs may rise.

  Further, in the gasket with filter 510 shown in FIG. 6, since a gap C is formed between the frame 531 and the holding portion 520b, contamination may flow out from the gap C.

JP 2013-151970 A JP 2011-202536 A

  The present invention has been made in view of the above points, and its technical problem is that the filter member can be fastened to the gasket body at a simple and low cost, and the filter function is sufficient. An object of the present invention is to provide a filter-equipped gasket that can be applied to the above.

  As a means for effectively solving the technical problem described above, the present invention provides a gasket main body provided with a through hole in a part of a plane of a metal plate and a seal bead around the through hole. A gasket with a filter, which is disposed in the through-hole portion and includes a filter member fixed to the gasket main body, wherein the gasket main body includes a protrusion protruding in one thickness direction, and the filter The member is pressed against the protrusion when the filter-equipped gasket is fastened.

  In the present invention, it is preferable that the gasket body is made of a single metal plate, and the filter member is fixed to the metal plate at a part of the circumference around the through hole portion, and the filter When the attachment gasket is fastened, it is pressed against the member to be sealed by the protrusion.

  In the present invention, it is preferable that the gasket main body has at least a first metal plate and a second metal plate laminated in the thickness direction, and the first metal plate protrudes toward one side in the thickness direction. The first metal plate and the second metal plate are fixed to each other on a part of the circumference around the through hole, and the filter member is disposed between the first metal plate and the second metal plate. In addition, when the gasket with filter is fastened, the protrusion is pressed against the second metal plate.

  According to the gasket with a filter of the present invention, when the gasket with a filter is fastened, the filter member is pressed against the protrusion, so that the filter member is fastened easily and at a low cost. Can be demonstrated.

It is a top view of the gasket with a filter concerning a first embodiment of the present invention. It is an AA line expanded sectional view of the gasket with a filter shown in FIG. It is a top view of the gasket with a filter concerning a second embodiment of the present invention. It is a BB line expanded sectional view of the gasket with a filter shown in FIG. It is sectional drawing of the gasket with a filter which concerns on a 1st prior art. It is sectional drawing of the gasket with a filter concerning 2nd prior art.

  Next, the filter-equipped gasket 10 according to the first embodiment of the present invention will be described in detail based on the drawings.

  The gasket 10 with a filter according to the present embodiment is fastened to a flange joint or the like in front of the cooling device. As shown in FIGS. 1 and 2, a single bead plate 20, a filter member 30, This is a so-called single-layer gasket with a filter, which is a combination of the above. The bead plate 20 according to the present embodiment corresponds to the metal plate according to claim 2.

  The bead plate 20 is made of a single metal plate, and has a through hole portion 22 formed so as to penetrate the center of the plane of the bead plate 20 in the thickness direction, and surrounds the periphery of the through hole portion 22. An annular seal bead portion 23 that is arranged and inclined at a required angle, an inner peripheral substrate 24 formed on the inner peripheral side with the seal bead portion 23 as a boundary, and an outer periphery with the seal bead portion 23 as a boundary And an outer peripheral substrate 26 formed on the side. In addition, the hole formed in the outer peripheral board | substrate 26 is the bolt hole 27 for inserting the fastening bolt not shown.

  An annular protrusion 25 that protrudes toward the one surface 21 a in the thickness direction is formed on the inner peripheral substrate 24, and the tip 25 a of the protrusion 25 is in contact with the filter member 30.

  The filter member 30 is made of a mesh-like metal material, and is provided so as to cover the through hole portion 22 of the bead plate 20. Further, the filter member 30 is fixed by a fixing portion 40 provided on one surface 21 a of the inner peripheral substrate 24 in a state where the filter member 30 is in contact with the tip 25 a of the protruding portion 25.

  The fixing portion 40 fixes the two locations on the circumference of the filter member 30 so that the filter member 30 does not fall off the bead plate 20. Here, as a method of fixing the filter member 30 by the fixing portion 40, for example, spot welding may be mentioned.

  Next, a state when the gasket with filter 10 according to the present embodiment is fastened will be described.

  The gasket with filter 10 according to the present embodiment is provided so as to cover a flange joint before a cooling device (not shown), and thereafter, a fastening bolt (not shown) is inserted into a bolt hole 27 formed in the bead plate 20. Then, the gasket with filter 10 is tightened and compressed. At the time of compression, the seal bead portion 23 exhibits a sealing function by elastically deforming under a compression load. Next, the filter member 30 positioned at the tip 25 a portion of the protrusion 25 is pressed against the flange joint by the protrusion 25, and the protrusion 25 is bitten into the filter member 30. Thereby, the gasket 10 with a filter is fastened by the flange junction part in front of a cooling device.

  Next, the gasket 10 with a filter according to the second embodiment of the present invention will be described in detail with reference to the drawings.

  That is, the gasket 10 with a filter according to the present embodiment is attached to a flange joint portion or the like in front of the cooling device, and as shown in FIGS. 3 and 4, the first bead plate 20a and the second bead plate. This is a so-called multi-layer gasket 10 with a filter composed of a combination of 20b and a filter member 30. In addition, the 1st bead plate 20a and the 2nd bead plate 20b which concern on this embodiment are corresponded to the 1st metal plate and 2nd metal plate of Claim 3.

  The configuration of the first bead plate 20a is the same as that of the bead plate 20 according to the first embodiment, and includes a through-hole portion 22, an annular seal bead portion 23, an inner peripheral side substrate 24, and an outer peripheral side substrate 26. And an annular protrusion 25 that protrudes toward the one surface 21a in the thickness direction of the first bead plate 20a. The seal bead portion 23 is disposed so as to surround the through hole portion 22 and is inclined in a direction away from the second bead plate 20b.

  The second bead plate 20b is made of a single metal plate, and includes a through hole portion 22 formed so as to penetrate the center of the plane of the second bead plate 20b in the thickness direction, and the through hole portion 22. An annular seal bead portion 23 that is arranged so as to surround the periphery and is inclined in a direction away from the first bead plate 20a, and an inner peripheral side substrate 24 that is formed on the inner peripheral side with the seal bead portion 23 as a boundary, And an outer peripheral substrate 26 formed on the outer peripheral side with the seal bead portion 23 as a boundary. The holes formed in the outer peripheral board 26 are bolt holes 27 through which fastening bolts (not shown) are inserted. The first bead plate 20 a and the second bead plate 20 b are fixed to each other by a fixing portion 40 on the circumference around the through-hole portions 22 and 22.

  The filter member 30 is made of a mesh-like metal material. The filter member 30 is provided between the first bead plate 20a and the second bead plate 20b so as to cover the through-hole portions 22 and 22 of the first bead plate 20a and the second bead plate 20b. .

  Next, a state when the gasket with filter 10 according to the present embodiment is fastened will be described.

  The gasket 10 with a filter according to the present embodiment is disposed at a flange joint portion in front of a cooling device (not shown), and then is not shown in bolt holes 27 and 27 formed in the first bead plate 20a and the second bead plate 20b. By inserting the fastening bolt, the gasket with filter 10 is tightened and compressed. During compression, the seal bead portions 23, 23 of the first bead plate 20 a and the second bead plate 20 b are elastically deformed by receiving a compression load, thereby exhibiting a sealing function. The filter member 30 located in the portion 25 a is pressed against the other surface 21 b of the second bead plate 20 b by the protrusion 25, and the protrusion 25 is bitten into the filter member 30. Thereby, the gasket 10 with a filter is fastened by the flange junction part in front of a cooling device.

  As described above, according to the gasket 10 with a filter according to the first and second embodiments, the bead plate 20 (first bead plate 20a) is obtained by tightening the gasket 10 with a filter and causing the protrusion 25 to bite into the filter member 30. Can be fastened to the flange joint or the second bead plate 20b. Therefore, the filter member 30 can be fastened easily and at low cost to the gasket 10 with a filter shown in FIGS. 5 and 6 according to the prior art.

  In addition, according to the filter-equipped gasket 10 according to the first and second embodiments, the bead plate 20 (the first bead plate 20a) is connected to the flange joint portion or the first by causing the annular protrusion 25 to bite into the filter member 30. The two bead plates 20b can be firmly fastened. Therefore, the filter function of the filter member 30 can be sufficiently exhibited without fixing the filter member 30 over the entire circumference with respect to the bead plate 20 (first bead plate 20a).

  The height of the seal beads 23 and 23 in the thickness direction of the gasket 10 with a filter according to the first and second embodiments is larger than the height of the protrusion 25 in the thickness direction. When fastening, first, the seal bead portion 23 is elastically deformed to exert a sealing function, and then the projection portion 25 presses the filter member 30, whereby the filter member 30 can be fixed.

DESCRIPTION OF SYMBOLS 10 Gasket with filter 20 Bead plate 20a First bead plate 20b Second bead plate 21a One side 21b The other side 22 Through-hole part 23 Seal bead part 24 Inner side board 25 Protrusion part 25a Tip 26 Outer side board 27 Bolt hole 30 Filter member 40 Fixed part

Claims (3)

A gasket body in which a through-hole portion is provided in a part on a plane of the metal plate, and a seal bead portion is provided around the through-hole portion, and a filter disposed in the through-hole portion and fixed to the gasket body A gasket with a filter comprising a member,
The gasket body includes a protrusion that protrudes toward one side in the thickness direction,
The filter-equipped gasket, wherein the filter member is pressed against the protrusion when the gasket with the filter is fastened. In the gasket with a filter according to claim 1,
The gasket body is made of a single metal plate,
The filter member is fixed to the metal plate at a part of the circumference around the through hole, and is pressed against the member to be sealed by the protrusion when the gasket with filter is fastened. Gasket with filter. In the gasket with a filter according to claim 1,
The gasket body has at least a first metal plate and a second metal plate laminated in the thickness direction,
The first metal plate includes a protrusion that protrudes toward one side in the thickness direction,
The first metal plate and the second metal plate are fixed to each other at a part of the circumference around the through hole portion,
The filter member is disposed between the first metal plate and the second metal plate, and is pressed against the second metal plate by the protrusion when the gasket with filter is fastened.

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