| 摘要 |
PURPOSE:To easily constitute a water guide path constitution at the time of the attachment and detachment of casings without spoiling the handling and outward appearance of piping by joining the entrance part of an upper water guide path and the exit part of a lower water guide path together as upper and lower casings are matched. CONSTITUTION:A power transmission device is stored in the upper and lower casings 16 and 17 which are attached and detached mutually. Then a pressure receiving hole 41 is bored in the front surface of the casing 17 in the propulsion direction of a part to be dipped in water and total pressure applied thereto is guided to a speed indicator 42 through the lower and upper water guide paths 43 and 45 and water guide horses 48 and 49 to detect a speed. Then, the hose 48 is connected to the water guide path 45 in the casing 16 and the entrance part and exit part of the water guide paths 45 and 43 are joined together watertightly as the casings 16 and 17 are matched. The hose 48 is therefore connected in the casing 16 and not led out, and the water guide path is easily constituted when the casings 16 and 17 are attached and detached. |
