| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a single-joint cage which is excellent in handling performance and assembly workability and is capable of stably continuing to retain a plurality of rolling elements over a long period of time by vanishing strength discrepancy of mutual joint regions and by maintaining strength of a whole retainer along circumferential direction equally and simultaneously by maintaining dimensional precision of the mutual joint regions at molding constantly and is capable of intending to enhance loading capacity and to make cost required to assemble lower. <P>SOLUTION: A joint section 10 jointing one portion of circumferential direction is formed on regions (joint regions 10a, 10b) extending between mutual pockets 2p adjoining each other along circumferential direction and is provided with engagement parts capable of engaging with each other on one side joint surface Sa and other side joint surface Sb which are formed by jointing the regions in central position of the circumferential direction between the mutual pockets and predetermined gaps are formed between the one side joint surface and the other side joint surface and between the mutual engagement parts in such a state that both of the engagement parts are engaged to each other. <P>COPYRIGHT: (C)2013,JPO&INPIT |
