| 摘要 |
PROBLEM TO BE SOLVED: To provide a soundproof door roller superior in durability and usability, and lightly opening and closing a sliding door, without substantially causing abrasion of a wheel. SOLUTION: A wheel of the door roller is composed of a rotary cylindrical body rotatably pivoted on a fixed shaft for supporting the wheel by an installation frame body and a rotary ring composed of a metallic or hard synthetic resin for rolling in a door roller rolling groove of a rail for the door roller. A sound absorbing member such as rubber is integrally interposed between the rotary cylindrical body and the rotary ring. COPYRIGHT: (C)2007,JPO&INPIT
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