| 摘要 |
PURPOSE:To smooth the rising/falling movement of a shower nozzle and besides make approximately uniform the speed at which it rises and falls so as to stabilize the movement, and also enhance its durability and the reliability of its drive, and simplify its maintainace and checking, by providing breaking spring means having spring forces approximately equal to the gravitational forces of a switching mechanism, and buffer means for buffering the switching spring forces of a reverse switching spring mechanism. CONSTITUTION:A reverse spring shaft 27 is joined to a pinion gear 24 according to a crank structure wherein a connecting pin 28 is also joined to the pinion gear 24, and the other end of the shaft 27 is removably fitted into a reverse spring bearing 29, and the reverse spring bearing 29 is rotatably attached to the valve lid 32 of a switching valve 1. The open end of the reverse spring shaft 27 which is located on the side of the reverse spring bearing 29 is provided with a buffer spring 46 as buffer spring means 6 for preventing switching movement of the switching valve 1 from becoming over-rotation due to over-rotation of the pinion gear 24 which is caused by the residual recovering forces of the reverse spring 26, and also for buffering the impact of reverse movement of the spring. While a shower nozzle 2 makes a movement to rise and fall, the switching valve 1 is therefore allowed to move at even rate whether it rises or falls, and thus smooth drive with less noise and impact can be obtained continuously. |
