Single-rack handle lock

The utility model relates to a single-rack handle lock which comprises a transmission mechanism, a spring bolt and a control mechanism, and the transmission mechanism comprises a mounting seat, a gear and a sliding piece; the gear is connected with the control mechanism, so that the gear can be driven by the control mechanism to rotate forwards and backwards, and the rotating axis of the gear is parallel to the horizontal plane; the number of the sliding piece is only one, the sliding piece is installed on the installation base in a sliding mode, a tooth section is arranged on the sliding piece, the sliding direction of the sliding piece and the length direction of the tooth section are both perpendicular to the horizontal plane, and the tooth section of the sliding piece is meshed with the gear, so that the sliding piece can correspondingly move up and down when the gear rotates forwards and backwards; and the spring bolt is connected with the sliding piece. The utility model has the advantages that the gear