| 摘要 |
PROBLEM TO BE SOLVED: To improve assembly workability by housing a bearing in the inside bottom face part of a bearing case formed into a bottomed cylinder substantially via a shock absorber made of an elastic material, arranging a bearing seat on the inside wall face of a housing, and assembling the bearing to the bearing seat with the bearing case. SOLUTION: A bottom part of a housing 1 formed into a bottomed cylinder substantially is recessed partially in the thickness direction, and a bearing seat 2 constructed of a substantially column shaped space is formed in the inside part bottom face of the housing 1, and a bearing body 3 installed in the end part of a rotary shaft 103 is inserted into the bearing seat 2. The bearing body 3 is previously constructed of a bearing 102, the bottomed cylinder type bearing case 4, and a shock absorber 5, which is arranged between the bearing 102 and inside bottom face of the bearing case 4 and is formed of elastic material such as rubber into a thin plate disc shape substantially, and these are assembled integrally. Therefore, the shock absorber 5 and the bearing 102 are housed in the bearing case 4 so as to be assembled integrally, and then, these can be handled as a single part serving as the bearing body 3. As a result, assembling work can be facilitated greatly.
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