The present invention is directed to novel cyclohexylglycine derivatives which are inhibitors of the dipeptidyl peptidase-IV enzyme and which are useful in the treatment or prevention of diseases in which the dipeptidyl peptidase-IV enzyme is involved, such as diabetes and particularly type 2 diabetes. An operating unit of the lock system causes the key cylinder and the lock mechanism to be mechanically linked with each other by a wire cable, whereby the lock mechanism is forcibly driven to the unlocking side through a rotational operation of the key cylinder to the \u201cOPEN\u201d position. The entry point information can be taken over a variety of voltages, temperatures, and frequencies to characterize the DLL. In order to provide a compact, cost-effective closing device, the restoring force of the grip flap can be directly generated by the spring-loading of the contact actuator of the electrical switch.