| 摘要 |
PROBLEM TO BE SOLVED: To provide a runner for a folding door prevented from slipping sideways and meandering due to patial load such as tilting moment while simplifying the journalled structure of a roller to reduce total cost. SOLUTION: This sash pulley type runner is provided with a runner body 16, rollers 17 arranged in the longitudinal and lateral directions, bearings 20 journalling the lateral rollers 17, and a roller shaft 18. The bearing 20 is constituted using the roller 17 as an outer ring body and constituted as an angular bearing with a ball groove 21 provided inside, an inner ring body 22 mounted to the roller shaft 18, and a group of balls 23. Since the bearing 20 can simultaneously support both radial load and thrust load in the dispersed state, the runner can be prevented from slipping sideways and meandering even in the case of partial load being applied to the runner.
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