Bearing device
US-9624978-B2 · Apr 18, 2017 · US
Rolling bearing apparatus
US9945422B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9945422-B2 |
| Application number | US-201715581102-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 28, 2017 |
| Priority date | May 11, 2016 |
| Publication date | Apr 17, 2018 |
| Grant date | Apr 17, 2018 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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- CPC / IPC classifications
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- Citations and related patents
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Abstract
Official abstract text for this publication.
A rolling bearing apparatus includes: a bearing including an inner ring, an outer ring, a plurality of balls, and a cage; and an oil supply unit provided axially adjacent to the bearing. The oil supply unit includes a tank in which to accumulate lubricant, and a pump that receives the lubricant in the tank and supplies the lubricant to the bearing. The tank is provided with a holding material for the lubricant, the holding material having minute pores. The holding material includes a first holding portion provided in a region on an outlet-side of the tank, and a second holding portion provided in a part other than the region and having a porosity higher than that of the first holding portion.
First claim
Opening claim text (preview).
What is claimed is: 1. A rolling bearing apparatus comprising: a bearing including an inner ring, an outer ring, a plurality of rolling elements provided between the inner ring and the outer ring, and a cage holding the plurality of rolling elements; and an oil supply unit provided axially adjacent to the bearing and including a tank in which lubricant is to be accumulated, and a pump that receives the lubricant from the tank and supplies the lubricant to the bearing, wherein: the tank is provided with a holding material for holding the lubricant, the holding material having minute pores; and the holding material includes a first holding portion provided in a region on an outlet side of the tank, and a second holding portion provided in a region other than the region on the outlet side of the tank and having a porosity higher than that of the first holding portion. 2. The rolling bearing apparatus according to claim 1 , wherein the holding material is made of a porous element. 3. The rolling bearing apparatus according to claim 1 , wherein the first holding portion has an average pore diameter smaller than that of the second holding portion. 4. The rolling bearing apparatus according to claim 1 , wherein a volume occupied by the second holding portion is larger than a volume occupied by the first holding portion. 5. The rolling bearing apparatus according to claim 1 , wherein the outlet of the tank and an oil chamber of the pump are connected to each other by a passage where the lubricant freely flows from the outlet to the oil chamber. 6. The rolling bearing apparatus according to claim 1 , wherein a height position of an oil level of the lubricant filled into the tank is set to be equal to or lower than an upper end of the holding material.
Assignees
Inventors
Classifications
- F16C33/6659Primary
Details of supply of the liquid to the bearing, e.g. passages or nozzles · CPC title
with a single row or balls · CPC title
in a porous or resinous body, e.g. a cage impregnated with the liquid · CPC title
Piezoelectric · CPC title
related to the amount supplied, e.g. gaps to restrict flow of the liquid · CPC title
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Frequently asked questions
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- What does patent US9945422B2 cover?
- A rolling bearing apparatus includes: a bearing including an inner ring, an outer ring, a plurality of balls, and a cage; and an oil supply unit provided axially adjacent to the bearing. The oil supply unit includes a tank in which to accumulate lubricant, and a pump that receives the lubricant in the tank and supplies the lubricant to the bearing. The tank is provided with a holding material f…
- Who is the assignee on this patent?
- Jtekt Corp
- What technology area does this patent fall under?
- Primary CPC classification F16C33/6659. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Apr 17 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).