| 摘要 |
PROBLEM TO BE SOLVED: To provide a door roller device capable of preventing accumulation of deposits on the running surface of the outer periphery of a door roller. SOLUTION: A double sliding sash has door rollers 23 supported at both ends of a lower rail 21 via door roller frames 22, respectively. Each of the door roller frames 22 consists of a boxed outer frame 22a and an inner frame 22b built in the outer frame 22a. A protruded piece 25 is formed integrally with the inner frame 22b by cutting off part of the side face of the inner frame 22b in a tongue form followed by bending to the side of the door roller 23. The tip of the protruded piece 25 is formed in an approximately circular shape so as to be fitted into a recessed portion 23a of the door roller 23.
|
