초록 ▼

An end face sealing assembly device (S2) comprises a seal ring (15) having an approximately parallelogrammatic cross section so that an annular lip (15c) contacts a bushing end face (4a); a support ring (14) having an approximately L-shaped cross section formed by an axial direction side member (14a

An end face sealing assembly device (S2) comprises a seal ring (15) having an approximately parallelogrammatic cross section so that an annular lip (15c) contacts a bushing end face (4a); a support ring (14) having an approximately L-shaped cross section formed by an axial direction side member (14a) and a radial direction side member (14b), the seal ring (15) being supported by the radial direction side member (14b); and a load ring (16) having an approximately trapezoidal cross section and formed of an elastic material for providing a back pressure to the seal ring (15). The external periphery of the load ring (16) is formed of an outer annular contact surface (16a), a convexly curved front peripheral surface (16b), a rear peripheral surface (16c, 16d), and an inner annular contact surface (16e, 16f). The rear peripheral surface is formed as an inclined linear surface (16c) and a concavely curved surface ( 16d), with the latter extending from the inclined linear surface to the axial direction side member (14b) of the support ring (14). This load ring configuration provides compression deformation with a uniform annular bulge free from irregularities. The end face sealing assembly provides for stability of a follow-up property of the seal and an increased effective stroke in the thrust direction.

대표청구항 ▼

An end face sealing assembly device for sealing an annular space between a bushing and a member where the member contains an annular counterbore with a generally axial side wall and a generally radial end wall, and the bushing has a bushing end face facing the annular counterbore, said end face seal

An end face sealing assembly device for sealing an annular space between a bushing and a member where the member contains an annular counterbore with a generally axial side wall and a generally radial end wall, and the bushing has a bushing end face facing the annular counterbore, said end face sealing assembly device being positionable in the annular counterbore and comprising: an annular support ring having an axial direction side member and a radial direction side member joined together so as to form an annulus having an approximately L-shaped cross section in a radial plane; an annular seal ring having a backside and a frontside with an annular lip formed on said frontside, said annular seal ring being in contact with and held by said radial direction side member so that said annular lip forms an annular seal surface with the bushing end face when said annular lip comes into contact with the bushing end face; and an annular load ring positioned so as to apply a pressure to the backside of said seal ring toward the bushing end face, said annular load ring having a periphery comprising: an outer annular contact surface which contacts the generally axial wall of the annular counterbore, an annular peripheral front surface formed as a curved surface extending from the outer annular contact surface to the backside of the seal ring, an annular peripheral rear surface formed as a combination of a generally linear inclined annular surface and a generally curved annular surface, with the generally linear inclined annular surface extending from the generally radial end wall of the annular counterbore toward the support ring, and the generally curved annular surface extending from the linear inclined annular surface to the axial direction side member of the support ring, and an inner annular contact surface in contact with the support ring and the seal ring and extending from a front end of the generally curved annular surface to a front end of the annular peripheral front surface, the load ring being adapted to be compression-deformed to provide a uniform bulge without irregularities when the end face sealing assembly device is compressed between the bushing end face and the generally radial end wall of the annular counterbore.