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发明公开
CN103939606A 涡卷形垫圈 无效 - 撤回

涡卷形垫圈
摘要：
本发明提供一种可抑制内圈和外圈的变形的涡卷形垫圈(1),其具有:包括本体部(12a)、形成于本体部(12a)的内周的内周空卷部(12b)和形成于本体部(12a)的外周的外周空卷部(12c)的垫圈本体(12);内圈(13),在其外周面上形成可与内周空卷部(12b)内周面装脱的内圈卡爪部(13c);外圈(14),在其内周面上形成可与外周空卷部(12c)外周面装脱的外圈卡爪部(14c)。内周空卷部(12b)和外周空卷部(12c)的圈数设定为5～10圈。在内圈(13)外周面与内周空卷部(12b)的内周面中除内圈卡爪部(13c)的部分之间,形成有规定的第一间隙(S1)。在外圈(14)内周面与外周空卷部(12c)的外周面中除外圈卡爪部(14c)的部分之间形成有规定的第二间隙(S2)。
摘要（英）：

The invention provides a spiral gasket (1) which can suppress the deformation of an inner ring (13) and an outer ring (14) thereof. The spiral gasket includes: a gasket body (12) having a body portion (12a), an inner peripheral empty winding portion (12b) which is formed on an inner periphery of the body portion, and an outer peripheral empty winding portion (12c) which is formed on an outer periphery of the body portion; an inner ring having an outer peripheral surface on which an inner ring pawl portion (13c) engageable with an inner peripheral surface of the inner peripheral empty winding portion is formed; and an outer ring (14) having an inner peripheral surface on which an outer ring pawl portion (14c) engageable with an outer peripheral surface of the outer peripheral empty winding portion (12c) is formed. The number of turns of the inner peripheral empty winding portion (12b) and the number of turns of the outer peripheral empty winding portion (12c) are set to 5 to 10. A predetermined first gap (S1) is formed between the inner peripheral surface of the inner peripheral empty winding portion and a portion of the outer peripheral surface of the inner ring except for the inner ring pawl portion. A predetermined second gap (S2) is formed between the outer peripheral surface of the outer peripheral empty winding portion and a portion of the inner peripheral surface of the outer ring except for the outer ring pawl portion.

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