| 摘要 |
A trunking section ( 50 ) is described and has a body ( 51 ) with sides ( 52 a , 52 b and 52 c) which form a channel ( 54 ). Trunking section ( 50 ) also has an end portion ( 62 ) inserted into first end ( 56 ) such that it engages the internal surfaces of sides ( 52 a, 52 b and 52 c) and is welded thereto. End portion ( 62 ) is provided with a first aperture ( 64 ) which is adapted to receive a bush connector ( 66 ) and has four curved edges ( 70 ) and four straight edges ( 72 ) therebetween. The bush connector ( 66 ) has a male part ( 74 ) and a female part ( 76 ). Male part ( 74 ) has a tubular body ( 78 ) which has an aperture ( 80 ), it has external first threaded surfaces ( 82 ) and rotation prevention means, in the form of flat portions ( 84 ). Bush connector ( 66 ) also has a female part ( 76 ) with an internal second thread ( 88 ) which engages first threaded portions ( 82 ) of male part ( 74 ). |
