| 摘要 |
PURPOSE:To prevent dust from intrusion into a limiting path by interposing an expansible air chamber communicating to the limiting path having a dust catching means between a vibration generating portion and a vibration receiving portion. CONSTITUTION:A cylindrical body 14, fixed at the lower end to the periphery of a base plate 10, has the upper end bore successively expanded and bonded to the vulcanized lower end of a tubular rubber body 16. The vulcanized upper end of the rubber body 16 is bonded to a tray-like bracket 18 which is turn is secured fixedly to a top plate 20. A space surrounded by these rubber body 16, cylindrical body 14 and base plate 10 is an expansible air chamber 24. And the air chamber 24 communicates to the outside through a pipe 34 extending through a portion of the cylindrical body 14 and a filter 36 is mounted on an end of the pipe 34. |
