| 摘要 |
A coupling member ( 20 ) includes cylindrical body ( 22 ) and hook ( 24 ). Sleeve ( 70 ) slides over the outer surface of body ( 22 ) between and open position (as shown) and a closed position and carries pin ( 50 ) which is guided by slots ( 60,62 ) formed in body ( 22 ). Closure shaft ( 30 ) is mounted within body ( 22 ) and biased by spring ( 42 ) towards a closed position wherein end ( 32 ) of shaft ( 30 ) is received within recess ( 44 ) formed in portion ( 26 ) of hook ( 24 ). Pin ( 50 ) is slidably mounted in transverse bore ( 56 ) of shaft ( 30 ). Spring ( 58 ) biases pin head ( 52 ) towards shaft ( 30 ) so that when shaft ( 30 ) is in the closed position, pin head ( 52 ) is seated in recess ( 66 ) and shaft ( 30 ) is thereby locked in the closed position. Coupling member ( 20 ) can be used for securing lines in mountaineering or cave diving.
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