| 摘要 |
The invention resides in an operating mechanism for an underwater camera housing (1). The operating mechanism comprises a shaft (2) adapted to allow in use the shaft (2) to pass through the wall of the underwater camera housing (1). Sealing means (4,5) on the shaft (2) allow in use the shaft (2) to be sealed to the underwater camera housing (1) in a substantially waterproof manner. A first pressure device (6) is mounted on the shaft (2) and positioned in use outside the underwater camera housing (1), and a second pressure device (7) is associated with the shaft (2) and positioned in use within the underwater camera housing (1). A torque adjustment means (10, 11, 15) is provided between the first pressure device (6) and the second pressure device (7) such that in normal use any feel of resistance to movement of the second pressure device (7) is increased when felt on the first pressure device (6). |
