JP2011226511A5

JP2011226511A5 - Sealing device and rolling bearing

Info

Publication number: JP2011226511A5
Application number: JP2010094961A
Authority: JP
Filing date: 2010-04-16
Publication date: 2013-06-20
Anticipated expiration: 2030-04-16

Description

本発明の上記目的は、下記の構成により達成される。
（１）芯金及び弾性シール体を有し、転がり軸受の外輪の内周面又は内輪の外周面の一方に固着されると共に、外輪の内周面又は内輪の外周面の他方に摺接して軸受内部を密封する密封装置であって、芯金は、断面略Ｌ字形のリング状に形成され、側面に設けられて円周方向に沿って延びる複数の穴と、隣接配置される穴の間に形成されて芯金の外周側と内周側とを繋ぐ柱部と、を備え、弾性シール体は、外輪の内周面又は内輪の外周面に摺接するリップ部と、穴を塞ぐように形成され軸受内部の圧力に応じて弾性変形して軸受内部を一定圧力に維持する薄肉の弾性変形部と、を備えることを特徴とする密封装置。
（２）内周面に外輪軌道溝を有する外輪と、外周面に内輪軌道溝を有する内輪と、外輪軌道溝と内輪軌道溝間に転動自在に配設される複数の転動体と、外輪の内周面又は内輪の外周面の一方に固着されると共に、外輪の内周面又は内輪の外周面の他方に摺接して軸受内部を密封する密封装置と、を備える転がり軸受であって、密封装置が、（１）に記載の密封装置であることを特徴とする転がり軸受。 The above object of the present invention can be achieved by the following constitution.
(1) has a core metal and an elastic sealing member, sliding also the inner peripheral surface of the outer ring of the rolling bearing while being fixed to one of the outer peripheral surface of the inner ring, the other of the inner peripheral surface or the inner ring outer peripheral surface of the outer ring contact with a sealing equipment to seal the inside of the bearing, the core metal is formed into a ring-shaped cross-section substantially L-shaped, and a plurality of holes extending along the circumferential direction provided on a side surface, disposed adjacent A pillar portion formed between the holes and connecting the outer peripheral side and the inner peripheral side of the core metal, and the elastic seal body includes a lip portion slidably contacting the inner peripheral surface of the outer ring or the outer peripheral surface of the inner ring, and the hole sealing equipment, characterized in that it comprises a thin elastic deformation portion to keep the inside of the bearing at a constant pressure by elastic deformation in accordance with the formed pressure in the bearing so as to close.
(2) An outer ring having an outer ring raceway groove on the inner peripheral surface, an inner ring having an inner ring raceway groove on the outer peripheral surface, a plurality of rolling elements arranged to be freely rollable between the outer ring raceway groove and the inner ring raceway groove, and an outer ring A sealing device that is fixed to one of the inner peripheral surface of the inner ring or the outer peripheral surface of the inner ring and that seals the inside of the bearing in sliding contact with the other of the inner peripheral surface of the outer ring or the outer peripheral surface of the inner ring, A rolling bearing, wherein the sealing device is the sealing device according to (1).

Claims

It has a core metal and an elastic sealing member, or the inner peripheral surface of the outer ring of the rolling bearing while being fixed to one of the outer peripheral surface of the inner ring, sliding contact with the other of the inner peripheral surface or outer peripheral surface of the inner ring of the outer ring a sealing equipment to seal the interior of the bearing Te,
Before Kishinkin is formed in a ring shape of approximately L-shaped cross section, a plurality of holes extending along the circumferential direction is provided on the side surface, is formed between the holes being arranged adjacent the metal core A column portion connecting the outer peripheral side and the inner peripheral side,
Before SL elastic sealing body, and the lip portion in sliding contact with the inner peripheral surface or outer peripheral surface of the inner ring of the outer ring, the bearing inner elastically deformed in accordance with the formed pressure within said bearing so as to close the said hole sealing equipment, characterized in that it comprises a thin elastic deformation portion to maintain the constant pressure.

An outer ring having an outer ring raceway groove on an inner peripheral surface, an inner ring having an inner ring raceway groove on an outer peripheral surface, a plurality of rolling elements arranged to roll between the outer ring raceway groove and the inner ring raceway groove, and the outer ring A sealing device that is fixed to one of the inner peripheral surface of the inner ring and the outer peripheral surface of the inner ring, and that seals the inside of the bearing in sliding contact with the other of the inner peripheral surface of the outer ring or the outer peripheral surface of the inner ring. There,
The rolling bearing according to claim 1, wherein the sealing device is the sealing device according to claim 1.