| 摘要 |
[OBJECT] To provide a push button lock which includes a mechanism and its components assembled in a cartridge for setting and storing a security code for locking and unlocking. The cartridge is detachably attached to the inside of a housing so that various designs are available on the surface of the housing. The lock is manufactured and designed in an efficient manner, and requires less maintenance, thereby facilitating mass production. The security code for the lock is easily and readily set or altered with the lock attached to a door and without using a tool. The lock has an increased protection function, thereby improving convenience and safety. Further, a streamlined design of the lock reduces the load applied to a lock pin, prevents damage by tampering and erroneously pushing the push buttons, and thereby enhancing safety in use and increasing productivity. [SOLVING MEANS] A housing 18 on which a plurality of depressible push buttons are located is provided. A lock pin 237 which moves axially with the push button 20 is provided and is engageable with and disengageable from the push button 20. A lock plate 155 is provided and formed with a plate key hole 211 and plate lock hole 211a. The lock pin 237 is insertable in the plate key hole 211, and the lock pin 237 abuts the plate lock hole 211a. A reset plate 154 is provided, and is parallel to the lock plate 155. A reset spring 205 is provided inside, and axial displacement of a lock pin 237 inserted via the reset spring 205 is maintainable and releasable. A driving cam 58 linked to a deadbolt lock 8 is provided, and the deadbolt lock 8 is rotatable and engageable with a movement area of the lock plate 155. The push button lock provided here controls a movement of the lock plate 155 via the lock pin 237 when the push button is pressed, and releases an engagement between the lock plate 155 and the driving cam 58. A security-code controller 149 which slidably stores the reset plate 145 and the lock plate 155 and are parallel to each other. The security-code controller 149 is detachably attached to the housing 18. |
