Electronic lock

• US 7,350,383 B1
• Filed: 11/13/2006
• Issued: 04/01/2008
• Est. Priority Date: 11/13/2006
• Status: Expired due to Fees

• Current Assignee: Ching-Hung Kuo
• Original Assignee: Ching-Hung Kuo
• Inventors: Kuo, Ching-Hung
• Primary Examiner(s): Gall; Lloyd A.
• Application Number:
  US11/595,875
• Time in Patent Office: 505 Days
• Field of Search: 702/77, 702/781, 702/782, 704/39, 702/783, 704/41, 702/787, 704/32, 702/791, 702/83, 702/831, 70D/IG.30, 70D/IG.59, 70106-111, 702/57, 70D/IG.6, 292/144, 292/332, 292/333, 292/335, 292/169.13, 292/169.14
• US Class Current: 70/277
• CPC Class Codes: E05B 17/2011 using balls or the like cooperating with notches E05B63/121 takes precedence
• CPC Class Codes: E05B 2063/207 Automatic deadlocking
• CPC Class Codes: E05B 45/06 Electric alarm locks E05B45/005 takes precedence
• CPC Class Codes: E05B 47/0607 the detent moving pivotally or rotatively
• CPC Class Codes: E05B 55/12 the bolt being secured by the operation of a hidden parallel member ; Automatic latch bolt deadlocking mechanisms, e.g. using a trigger or a feeler
• CPC Class Codes: E05B 63/20 released automatically when the wing is closed for panic door locks of the vertical rod type E05B65/1013
• CPC Class Codes: Y10S 70/06 Bolt dogged in retracted position
• CPC Class Codes: Y10S 70/30 Switch lock
• CPC Class Codes: Y10T 292/098 Auxiliary bolt
• CPC Class Codes: Y10T 292/0982 Bolt blocking or disabling means
• CPC Class Codes: Y10T 292/546 Sliding detent
• CPC Class Codes: Y10T 70/5226 Combined dead bolt and latching bolt
• CPC Class Codes: Y10T 70/7062 Electrical type [e.g., solenoid]
• CPC Class Codes: Y10T 70/7079 Key rotated [e.g., Eurocylinder]
• CPC Class Codes: Y10T 70/7102 And details of blocking system [e.g., linkage, latch, pawl, spring]
• CPC Class Codes: Y10T 70/7107 And alternately mechanically actuated by a key, dial, etc.
• CPC Class Codes: Y10T 70/7136 Key initiated actuation of device

Abstract

The present invention provides an electronic lock structured to include a first bolt configured with an elastic clasp, an electromagnetic device connected to an input device, a second bolt and a microswitch connected to a security system, all of which are installed interior of a housing of the electronic lock. The elastic clasp is retained by a protruding edge of the housing, thereby disenabling the first bolt from an arbitrary retracting movement that would otherwise render the lock incapable of being unlocked. The input device controls the electromagnetic device to induce the elastic clasp and release a retaining state, and then directly rotating a rotating button causes a retracting movement of the first bolt and unlocking of the electronic lock, which simultaneously disconnects the security system. After unlocking, a front end of the second bolt protrudes out from the housing, whereupon a protruding base of the second bolt is used to press a steel ball, thereby enabling the second bolt to form a substantially stable position, which ensures effective prevention of mistaken locking and avoids forgetting to lock. Moreover, when in a locked state, the second bolt retracts within the housing and triggers the microswitch to activate the security system, thereby providing the present invention with security and convenience of operation.

Claims

1. An electronic switch, comprising:

a first bolt that is directly controlled by a rotating button to enable the first bolt to outwardly protrude from or retract within a housing, an elastic clasp is located at an end of the first bolt, and the elastic clasp is retained by a protruding edge of the housing, thereby disenabling the first bolt from an arbitrary retracting movement;

an electromagnetic device positioned at an upper end of an extended section of the first bolt interior of the housing, an electromagnetic inductive surface of the electromagnetic device appropriately corresponds to the elastic clasp, the electromagnetic device is connected to an input device using a conducting wire;

entering of a correct password into the input device activates the electromagnetic device to induce movement of the elastic clasp, thereby releasing a retaining state between the elastic clasp and the protruding edge of the housing, and simultaneously disconnecting a security system;

a second bolt positioned above the first bolt interior of the housing;

when locking, the first bolt protrudes into a lockhole and the second bolt retracts within the interior of the housing;

when unlocking, the first bolt retracts within the interior of the housing and the second bolt protrudes out of the housing;

thus, the freely retractable characteristic of the second bolt is used to prevent mistaken locking; and

a microswitch connected to the security system, and positioned at an end of the second bolt;

when the second bolt retracts within the interior of the housing, then the second bolt triggers the microswitch and activates the security system through a conducting wire.

2. The electronic switch according to claim 1, wherein the first bolt comprises a Y-shaped extended section, and the elastic clasp is disposed on one of the ends of the Y-shaped extended section, the elastic clasp is pivotally attached to a pivot shaft located at the end of the Y-shaped extended section, and a spring is disposed between the elastic clasp and the end of the extended section;

a front end of the elastic clasp is forced downward when subjected to elastic tension, and is appropriately retained by the protruding edge of the housing, thereby disenabling the first bolt from an arbitrary retracting movement that would otherwise render the electronic switch incapable of being unlocked.

3. The electronic switch according to claim 1, wherein the first bolt comprises a Y-shaped extended section, and a spring is disposed on an end of the Y-shaped extended section, thereby providing the first bolt with outward protruding elasticity.