Sealing device and manufacturing method therefor
AssigneeSchaeffler Technologies AG & Co. KG
InventorsYuelin Zhang, Xin Liu
Life of this patent
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Abstract
A sealing device includes an annular elastic seal body and a rigid annular member, and the elastic seal body is fixed to the rigid annular member. The elastic seal body includes a base and at least one seal lip, and the seal lip extends from the base in a direction away from the base. The seal lip includes a foamed layer formed on a surface thereof. The foamed layer has a plurality of foam structures, and the seal lip also includes a wear-resistant coating formed on the foamed layer. A manufacturing method for a sealing device is also disclosed.
Claims18
A sealing device, comprising:
- an annular elastic seal body and a rigid annular member, the elastic seal body being fixed to the rigid annular member,
- wherein the elastic seal body comprises a base and at least one seal lip, the at least one seal lip extends from the base in a direction away from the base;
- and
- wherein the seal lip comprises a foamed layer formed on a surface thereof, the foamed layer has a plurality of foam structures, and the seal lip further comprises a wear-resistant coating formed directly on the foamed layer.
A manufacturing method for a sealing device, wherein:
- the sealing device comprises an annular elastic seal body and a rigid annular member, the elastic seal body is fixed to the rigid annular member, the elastic seal body comprises a base and at least one seal lip, and the seal lip extends from the base in a direction away from the base;
- and
- the seal lip comprises a foamed layer formed on a surface thereof, the foamed layer has a plurality of foam structures, and the seal lip further comprises a wear-resistant coating formed on the foamed layer;
- the method comprises:
- vulcanizing the elastic seal body, wherein the surface of the seal lip is foamed by spraying a foaming agent on an inner surface of a mold, thereby forming the foamed layer;
- and
- forming the wear-resistant coating by applying a wear-resistant paint directly on the foamed layer.
Dependencies are inferred from the claim text.