| 摘要 |
A bayonet lampholder comprising a housing (1) supporting fixed terminals (3) to which in use electrical cables are connected, the housing defining a socket for receiving an inserted bulb and slots (9) for receiving the bayonet pins of an inserted bulb, and a carrier (2) mounted within the housing and supporting contacts (5) arranged to electrically contact a bulb inserted into the lampholder. The carrier (2) is movable between a first position in which the contacts (5) are isolated from the terminals (3) and a second position in which the contacts (5) electrically contact respective terminals (3), and the carrier (2) is spring-biased from the second position to the first position. The carrier supports surfaces (8) which extend adjacent the slots so as to be engaged by the bayonets (10) of an inserted bulb, and the carrier (2) and housing (1) define interacting formations (6, 7) such that for the carrier (2) to be moved from the first position to the second position it must initially execute a turning movement within the housing (1) and then an axial movement relative to the housing (1). The said carrier surfaces (8) are positioned such that the bayonets (10) of an inserted bulb slide along the said surfaces as the bayonets (10) are pushed into the slots (8), the slots (8) being inclined to the said surfaces such that the sliding contact between the bayonet and the surfaces causes the carrier to execute the required turning movement. |
