Seal structure for relatively rotational members
AssigneeTochigi Fuji Sangyo Kabushiki Kaisha
InventorShouji Yoshida
Life of this patent
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Abstract
A seal structure is disclosed as mounted in a coupling 1, exposed in the vicinity of a stationary member 14, with a dust cover 15 being mounted to a cylindrical member 19 for preventing foreign material from entering a gap between the coupling 1 and the stationary member 14, and a seal member 17 is disposed at a position opposed to the dust cover on the stationary member 14, with a seal portion 123 of the seal 17 being held in sliding contact with the dust cover 15.
Claims19
A seal structure, separated from a bearing structure, for sealing a gap between a first member and a second member disposed rotationally relative to the first member and including a case-like torque transmitting member, the seal structure comprising:
- a cover member preventing foreign material from entering the gap;
- and
- a seal member fixedly secured to at least one of the first and second members and held in sliding contact with the cover member to seal the gap,
- wherein the case-like torque transmitting member is supported with the first member via the bearing structure at a position axially spaced from the seal member and a clutch disposed inside the case-like torque transmitting member, and
- wherein the cover member includes first and second bending portions extending along a rotational axis of the case-like torque transmitting member, wherein the seal member is held in sliding contact with the first bending portion of the cover member, said cover member secured to at least the other of the first and second members and wherein the second bending portion is displaced from one of the first member and the case-like torque transmitting member at a given distance in a radial direction of the case-like torque transmitting member.
A seal structure, separated from a bearing structure, for sealing a gap between a first member and a second member disposed rotationally relative to the first member and including a case-like torque transmitting member, the seal structure comprising:
- a seal member disposed between the first member and the case-like torque transmitting member,
- wherein the case-like torque transmitting member is supported with the first member via the bearing structure at a position axially spaced from the seal member and a clutch having clutch plates disposed inside the case-like torque transmitting member,
- wherein the seal member has a sliding radius of curvature smaller than a rotating radius of curvature of the bearing,
- wherein the first member has a bent portion forming an opening for positioning the bearing structure in an area axially inside of the first member, and
- wherein the bent portion further positions the bearing structure in area radially outside of the clutch plates.
A seal structure, separated from a bearing structure, for sealing a gap between a first member and a second member disposed rotationally relative to the first member and including a case-like torque transmitting member, the seal structure comprising:
- a cover member preventing foreign material from entering the gap;
- and
- a seal member fixedly secured to at least one of the first and second members and held in sliding contact with the cover member to seal the gap,
- wherein the case-like torque transmitting member is supported with the first member via the bearing structure at a position axially spaced from the seal member and a clutch having clutch plates disposed inside the case-like torque transmitting member,
- wherein the first member has a bent portion forming an opening for positioning the bearing structure in an area axially inside of the first member, and
- wherein the bent portion further positions the bearing structure in an area radially outside of the clutch plates.
Dependencies are inferred from the claim text.