Abstract: A lock comprises a first retaining member, a second retaining member, a connection member, and a locking member. The locking member is mounted on the first retaining member or the second retaining member and is provided with a first retaining portion capable of a reciprocating motion. The connection member is fastened pivotally with the first or the second retaining member and is provided with a second retaining portion engageable with the first retaining portion. The connection member is further provided with one end which can be used for driving screws.

Abstract: A locking apparatus includes a following member secured to a pivotal axis, a braking piece capable of preventing the member from rotating in a first direction in a first position and of freeing the member in a second position, and a locking device having a tumbler body capable of engaging with the piece in the manner that the braking piece is in the first position when the locking device is in a locking state and when in an unlocking state, the tumbler body can urge the piece to be in the second position.