JP2009047243A5

JP2009047243A5 -

Info

Publication number: JP2009047243A5
Application number: JP2007214004A
Authority: JP
Filing date: 2007-08-20
Publication date: 2010-04-15

Description

前記課題を解決するため、本発明は次のような構成からなる。すなわち、本発明に係る玉軸受は、内輪と、外輪と、前記内輪及び前記外輪の間に転動自在に配された複数の転動体と、前記内輪及び前記外輪の間に前記転動体を保持する保持器と、を備え、自動車のエンジンルーム内で使用される玉軸受において、前記保持器を樹脂材料で構成したことを特徴とする。 In order to solve the above problems, the present invention has the following configuration. That is, the ball bearing Ru engaged to the present invention, an inner ring, an outer ring, a plurality of rolling elements rollably disposed between the inner ring and the outer ring, the rolling elements between the inner ring and the outer ring In a ball bearing used in an engine room of an automobile, the cage is made of a resin material.

このような本発明に係る玉軸受においては、前記樹脂材料はスーパーエンジニアリングプラスチックであることが好ましい。また、前記樹脂材料は汎用エンジニアリングプラスチックであってもよい。さらに、前記樹脂材料は、スーパーエンジニアリングプラスチックとガラス繊維及び炭素繊維の少なくとも一方からなる繊維強化材とを含有する樹脂組成物であり、この繊維強化材の含有量は樹脂組成物全体の１５質量％以上４０質量％以下であることが好ましい。In such a ball bearing according to the present invention, the resin material is preferably a super engineering plastic. The resin material may be general-purpose engineering plastic. Furthermore, the resin material is a resin composition containing a super engineering plastic and a fiber reinforcing material composed of at least one of glass fiber and carbon fiber, and the content of the fiber reinforcing material is 15% by mass of the entire resin composition. It is preferable that it is 40 mass% or less.

さらに、前記樹脂材料は、汎用エンジニアリングプラスチックとガラス繊維及び炭素繊維の少なくとも一方からなる繊維強化材とを含有する樹脂組成物であり、この繊維強化材の含有量は樹脂組成物全体の１５質量％以上４０質量％以下であることが好ましい。
さらに、本発明に係る玉軸受においては、前記保持器の組み込み時に前記保持器が変形することにより発生する応力を緩和する応力緩和手段を備えることが好ましい。 Furthermore, the resin material is a resin composition containing a general-purpose engineering plastic and a fiber reinforcement made of at least one of glass fiber and carbon fiber, and the content of the fiber reinforcement is 15% by mass of the entire resin composition. it is preferably 40 mass% or less.
Furthermore, in the ball bearing according to the present invention, it is preferable that the ball bearing includes stress relaxation means for relaxing stress generated by deformation of the cage when the cage is assembled.

Claims

An inner ring, an outer ring, a plurality of rolling elements that are arranged to freely roll between the inner ring and the outer ring, and a cage that holds the rolling element between the inner ring and the outer ring. A ball bearing used in an engine room, wherein the cage is made of a resin material.

The ball bearing according to claim 1, further comprising stress relaxation means for relaxing stress generated by deformation of the cage when the cage is assembled.

Ball bearing according to claim 1 or claim 2, wherein said resin material is a super engineering plastic.

The resin material is a resin composition containing a super engineering plastic and a fiber reinforcing material composed of at least one of glass fiber and carbon fiber, and the content of the fiber reinforcing material is 15% by mass or more and 40% by mass of the whole resin composition. The ball bearing according to claim 1 , wherein the ball bearing is not more than mass%.

The ball bearing according to claim 1, wherein the resin material is a general-purpose engineering plastic .

The resin material is a resin composition containing a general-purpose engineering plastic and a fiber reinforcing material composed of at least one of glass fiber and carbon fiber, and the content of the fiber reinforcing material is 15% by mass or more and 40% by mass of the entire resin composition. The ball bearing according to claim 1 , wherein the ball bearing is not more than mass% .