Key Mechanism

Abstract

A key mechanism comprises a rack and an external force key member, the lower part of the rack disposed with a transmission pinion on one side and ratchet means on the other side. The ratchet means comprises a first ratchet and a second ratchet arranged consecutively to one another from the top down. The rack is provided with a first step and a second step arranged consecutively to one another from the top down. An elastic retaining member is mounted on the ratchet-side of the rack, and a rack returning spring and key returning spring are respectively mounted on the rack and the external force key member. The elastic retaining member is brought into clamp connection with the first or second ratchet in the lower part under the press action on the external force key member. The key mechanism increases the range of possible password settings of the code lock.

Dependencies are inferred from the claim text.