| 摘要 |
<p>A face sealing structure (10) comprising a first body member (12) having a first surface part (11) defining therein an annular groove (14) having a bottom surface (17) and a side surface (15), a first sealing ring (18) having inner and outer side surface parts (22, 23) and a sealing surface (21), the inner side surface part (22) of the sealing ring (18) being in abutting engagement with the side surface (15) of the groove (14) and the outer side surface part (23) of the sealing ring (18) being a first cam surface part (23) inclined in relation to the inner side surface part (22), a second sealing ring (20) having inner and outer side surface parts (24, 26) and a sealing surface (25), the inner side surface part (24) of said second sealing ring (20) being a second cam surface part (24), which is in abutting engagement with the first cam surface part (23) of said first sealing ring (18) so as to tend to move said first sealing ring (18) outwardly from the groove (14) when the second cam surface (24) is pressed against the first cam surface (23), and biasing means (28) being in abutting engagement with the outer side surface (26) of said second sealing ring (20) for biasing said second sealing ring in a direction towards the side surface of the groove (14), whereby said first sealing ring (18) is clamped between said second sealing ring (20) and the side surface (15) of the groove (14).</p> |
