| 摘要 |
A safety shutter device for an electrical receptacle comprises left and fight overlapping sliding blocks. A sliding plate supports a small sliding block. A supporting bracket supports the fight and left sliding blocks and the sliding plate. A first flexible component is between the small sliding block and the sliding plate. The sliding plate and the sliding block are between the right sliding block and the supporting bracket. During a static state, a locking block is mated with a tapered nub to form a self-locking mechanism such that the left, right, and small sliding blocks, the sliding plate, and the supporting bracket are static relative to one another and cover conductive plug bushes under the supporting bracket. When a plug is inserted into a socket of the receptacle, the locking block separates from the tapered nub to unlock the safety shutter device.
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