| 摘要 |
PURPOSE: A limit switch for an elevator is provided to prevent rotating noise of a roller and to smoothly rotate the roller by inserting a bearing into a through-hole of a roller body. CONSTITUTION: A limit switch for an elevator comprises a bracket(70), a roller, and a housing(50). The roller comprises a body, a bearing and bushings. A through-hole is formed in the center of the body. The bearing is installed inside the through-hole of the body. A shaft hole through which a rotary shaft is penetrated is formed in the center of the bearing. A shaft hole through which the rotary shaft is penetrated is formed in the center of bushings. The bushings are installed in both sides of the bearing to prevent secession of the bearing.
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