Patent ID: 7311540
Filing Date: 2007-12-25
Classification: H01R

Abstract:
1. A safety mechanism in a light bulb socket having a socket plate and a pair of holes diagonally defined in the socket plate, each hole being composed of an insertion hole and a positioning hole, the safety mechanism comprising: at least one sliding block movably received in the socket plate and having a body, a wedged head formed on a distal end of the body extending into a joint between the insertion hole and the positioning hole, an abutting block formed on a side of the body and composed of an inclined first abutting face, a positioning recess and a first plane formed between the first abutting face and the positioning recess; and a releasing block movably mounted in the socket plate and having an elongated body and provided with, on at least one side face thereof, an inclined second abutting face corresponding to and engaged with the first abutting face of the at least one sliding block, a boss adjacent to a distal end of the inclined second abutting face to correspond to and be received in the positioning recess and a second plane to correspond to the first plane such that when an insertion head of a light bulb is inserted into the insertion hole, the insertion head is easily extend over the wedged head of the sliding block to be securely received in the positioning hole and when the insertion head is to be away from the hole, movement of the releasing block toward the at least one sliding block allows the boss to be received in the positioning recess and forces the at least one sliding block to move away from the hole to free the insertion head from the wedged head and movement of the insertion head releases limitation to the boss from the positioning recess as a result of engagement between the insertion head and the wedged head, wherein there are two oppositely located sliding blocks respectively corresponding to one of the two holes, each of the two sliding blocks is further provided with a first passage to receive therein a first spring so that the two sliding block are able to move, the releasing block has a second passage defined therein to receive a second spring so that the sliding block is able to move.