| 摘要 |
PROBLEM TO BE SOLVED: To provide a novel structure which facilitates the removal work despite the use of a highly rough ball return prevention member. SOLUTION: A fitting/holding part 12 is provided between the upper end part 6 of the inner rail 3 and a branch off part 8 and the fitting/holding part 12 is constituted of a protruded part 13 for the ball return prevention member and a fitting part 14 therefor which is opened ahead communicating with the protruded part. The ball return prevention member 18 is made up of a ball return prevention piece part 19 protruding from the protruded part 13 therefor of the fitting/holding part 12 and an elastic fitting piece part 20 extended to the lower end side of the prevention piece part 19. The elastic fitting piece part 20 is formed at the fitting part 14 for the ball return prevention member of the fitting/holding part 12 almost in a shape of U as viewed sectionally to allow the fitting thereinto against the elasticity thereof and a working part 15 adapted to get a removal member inserted thereinto is arranged in parallel near the fitting part 14 for the ball return prevention member of the fitting/holding part 12 being kept communicating therewith 14. COPYRIGHT: (C)2006,JPO&NCIPI
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