Rolling bearing apparatus and lubrication unit
AssigneeJtekt Corporation
InventorHajime Watanabe
Life of this patent
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Abstract
A rolling bearing apparatus includes: a bearing portion with an inner ring, an outer ring, balls, and a cage; and a lubrication unit provided adjacently to an annular space formed between the inner ring and the outer ring. The lubrication unit apparatus includes a pump that supplies a lubricant to the annular space and a tank in which a lubricant is stored. The pump has a housing portion filled with the lubricant and a driving portion that drives the lubricant in the housing portion to discharge the lubricant into the annular space. In order to detect insufficiency of the lubricant, the lubrication unit further includes a sensor provided in the pump and having an output that changes according to an amount of the lubricant in the housing portion.
Claims9
A rolling bearing apparatus comprising:
- a bearing portion including an inner ring, an outer ring, a plurality of rolling elements interposed between the inner ring and the outer ring, and a cage that holds the rolling elements such that the rolling elements are arranged in a circumferential direction;
- and
- a lubrication unit including a pump that supplies a lubricant to an annular space formed between the inner ring and the outer ring and a tank in which the lubricant is stored and which includes an outlet portion allowing the lubricant to flow out to the pump, the lubrication unit being provided adjacently to the annular space, wherein
- the pump includes a housing portion filled with the lubricant and a driving portion that drives the lubricant in the housing portion to discharge the lubricant into the annular space, and
- the lubrication unit further includes a sensor provided in the pump and having an output that changes according to an amount of the lubricant in the housing portion, in order to detect insufficiency of the lubricant in the lubrication unit.
A lubrication unit comprising:
- a pump that supplies a lubricant to a lubrication-needed area of a rotating component;
- and
- a tank in which the lubricant is stored and which includes an outlet portion that allows the lubricant to flow out to the pump, the lubrication unit being provided adjacently to the lubrication-needed area, wherein
- the pump includes:
- a housing portion filled with the lubricant;
- and
- a driving portion that drives the lubricant in the housing portion to discharge the lubricant to the lubrication-needed area, and
- the lubrication unit further includes a sensor provided in the pump and having an output that changes according to an amount of the lubricant in the housing portion, in order to detect insufficiency of the lubricant.
Dependencies are inferred from the claim text.