| 摘要 |
PURPOSE:To conduct circuits by sea water even when an accident such as infiltration of water arises and to display surely the position of an underwater sailing body by providing a sounding body on the ouside of a water pressure resistant case as well as a sounding circuit in a metallic case and a sounder operating circuit on the outside. CONSTITUTION:The water pressure resistance case 2 is incorporated into a sheath 1 of the underwater sailing body and the sounding body 3 is fixed to the cap part 2a of the case 2 and is operated by the sounding circuit 4 in the metallic case. The circuit 4 is grounded to the case 6 by a terminal 4a and is connected by a terminal 4b to one end 10a of the sounder operating circuit 10 on the outside of the case 2 via a cable 7 and a wire conduit fitting 9 from the positive side of a battery 5. The circuit 10 is grounded at the other end 10b to the case 2 and operates the body 3 by conducting a latch relay circuit L. Even if water infiltrates the device on account of an accident, the case 2 is conducted to the exposed part of the fitting 9 and the automatic operation of the body 3 is thus made possible. |
