A gasket having a core member having an opening, an inner seal portion made of elastic material and formed along an inner circumference of the opening, an outer seal portion made of elastic material and formed along an outer circumference of the core member. The core member has a seal-forming thin p
A gasket having a core member having an opening, an inner seal portion made of elastic material and formed along an inner circumference of the opening, an outer seal portion made of elastic material and formed along an outer circumference of the core member. The core member has a seal-forming thin portion and an easily-deformable portion, the seal-forming thin portion being configured to form the inner seal portion at the inner circumference and to form the outer seal portion at the outer circumference, and the easily-deformable portion being provided between the inner seal portion and the outer seal portion and being configured to easily deform the core member.
대표청구항▼
1. A gasket configured to seal a space between two members by being interposed between attachment faces of the two members and by being compressed therebetween, the gasket comprising: a core member, the core member being of a flat plate and having an opening; an inner seal portion, the inner seal po
1. A gasket configured to seal a space between two members by being interposed between attachment faces of the two members and by being compressed therebetween, the gasket comprising: a core member, the core member being of a flat plate and having an opening; an inner seal portion, the inner seal portion being made of elastic material and formed along an inner circumference of the opening; and an outer seal portion, the outer seal portion being made of elastic material and formed along an outer circumference of the core member;the inner seal portion being formed so as to be surrounded by the outer seal portion;the core member comprising: a seal-forming thin portion, a plurality of easily-deformable portions, and other portions, the seal-forming thin portion having a thickness that is thinner than the other portions of the core member so as to form the inner seal portion at the inner circumference and to form the outer seal portion at the outer circumference, and the easily-deformable portions being provided between the inner seal portion and the outer seal portion and being configured to easily deform the core member;the inner seal portion and the outer seal portion being respectively provided for a front face and a back face of the seal-forming thin portion;a plurality of fastening bolt holes provided on the other portions of the core member between the inner seal portion and the outer seal portion,a distance between the inner seal portion and the outer seal portion at any regions on which the fastening bolt hole is provided being larger than a distance between the inner seal portion and the outer seal portion at a region any regions in which the easily-deformable portions are provided, andthe easily-deformable portions each comprising a thin portion, the thin portion being continuously formed with the seal-forming thin portion of the inner seal portion and the seal-forming thin portion of the outer seal portion, and the thin portion having a joint portion made of elastic material, the joint portion being configured to be joined with the inner seal portion and the outer seal portion. 2. The gasket as set forth in claim 1, wherein the easily-deformable portions are formed between the plurality of fastening bolt holes and is independently formed from the fastening bolt holes, two fastening bolt holes are provided on the other portions of the core member so as to interpose the opening formed at a center of the core member, and the easily-deformable portions are located along a line equidistant from the fastening bolt holes and perpendicular to a line between the fastening bolt holes. 3. The gasket as set forth in claim 1, wherein the easily-deformable portions are formed between the fastening bolt holes. 4. The gasket as set forth in claim 1, wherein the easily-deformable portions are formed between the inner seal portion and the fastening bolt hole or between the outer seal potion and the fastening bolt hole. 5. The gasket as set forth in claim 1, wherein the easily-deformable portions are formed at a plurality of regions of the core member. 6. The gasket as set forth in claim 2, wherein the easily-deformable portions are formed at a plurality of regions of the core member. 7. The gasket as set forth in claim 3, wherein the easily-deformable portions are formed at a plurality of regions of the core member. 8. The gasket as set forth in claim 4, wherein the easily-deformable portions are formed at a plurality of regions of the core member. 9. The gasket as set forth in claim 1, wherein the easily-deform able portions have substantially the same thickness as that of the seal-forming thin portion. 10. The gasket as set forth in claim 1, wherein the inner seal portion is formed along a whole inner circumference of the opening and the outer seal portion is formed along a whole outer circumference of the core member. 11. The gasket as set forth in claim 2, wherein the core member is formed substantially in a lozenge shape, the fastening bolt holes are formed on one of diagonal lines of the core member in such a manner that the fastening bolt holes constitute a pair with the opening interposed therebetween and a pair of the easily-deformable portions is formed on the other of diagonal lines of the core member in such a manner that the easily-deformable portions constitute a pair with the opening interposed therebetween. 12. The gasket as set forth in claim 1, wherein the inner seal portion is configured to seal the space between the two members so as to prevent a fluid flowing through the opening from leaking to the space between the two members.
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이 특허에 인용된 특허 (14)
Bettencourt Alan C., Combination metal and elastomer cylinder head gasket.
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