Transmission device for a door lock
AssigneeTaiwan Fu Hsing Industrial Co., Ltd.
InventorsChao-Ming Huang, Chi-Ming Chen
Life of this patent
Estimating the term…
Abstract
A transmission device for a door lock has a solenoid switch, a driven device and a linkage assembly. The solenoid switch has a solenoid core, a guide tube, a sleeve and a clutch cap. The guide tube is mounted in the solenoid core and has a connecting end. The connecting end is formed on one end of the guide tube and protrudes out of the solenoid core. The sleeve is mounted slidably in the solenoid core and around the guide tube and has at least one engaging tab formed on and protruding from the sleeve at one end adjacent to the connecting end of the guide tube. The clutch cap is mounted around the connecting end of the guide tube and has at least one engaging notch selectively and detachably engaging respectively with a corresponding engaging tab on the sleeve.
Claims20
A solenoid switch for a door lock comprising:
- a solenoid core having
- a receiving hole being defined in the solenoid core;
- and
- a solenoid coil being wound around the solenoid core;
- a guide tube being mounted in the receiving hole in the solenoid core and having
- an axial hole being defined through the guide tube;
- and
- a connecting end being formed on one end of the guide tube and protruding out of the receiving hole in the solenoid core;
- a sleeve being mounted slidably in the receiving hole in the solenoid core and around the guide tube and having a protruding end and at least one engaging tab formed on and protruding from the protruding end of the sleeve and disposed adjacent to the connecting end of the guide tube;
- and
- a clutch cap being mounted around the connecting end of the guide tube and having at least one engaging notch selectively and detachably engaging respectively a corresponding engaging tab on the sleeve.
A transmission device for an electrical lock comprising:
- a solenoid switch comprising
- a solenoid core having
- a receiving hole being defined in the solenoid core;
- and
- a solenoid coil being wound around the solenoid core;
- a guide tube being mounted in the receiving hole in the solenoid core and having
- an axial hole being defined through the guide tube;
- and
- a connecting end being formed on one end of the guide tube and extending out of the receiving hole in the solenoid core;
- a sleeve being mounted slidably in the receiving hole in the solenoid core and around the guide tube and having a protruding end and at least one engaging tab formed on and protruding from the protruding end of the sleeve and disposed adjacent to the connecting end of the guide tube;
- and
- a clutch cap being mounted around the connecting end of the guide tube and having at least one engaging notch selectively and detachably engaging respectively a corresponding engaging tab on the sleeve;
- a driven device being securely connected to the clutch cap of the solenoid switch;
- and
- a linkage assembly being slidably mounted around the solenoid switch and comprising
- an outer linkage being connected to the clutch cap of the solenoid switch;
- an inner linkage connected to the outer linkage and the driven device;
- and
- at least one spring connected between the inner linkage and the driven device.
A door lock comprising
- a handle assembly being an inner and outer handle retracting a latch assembly;
- a solenoid switch selectively engaging the latch assembly, wherein the solenoid switch comprises
- a solenoid core having
- a receiving hole being defined in the solenoid core;
- and
- a solenoid coil being wound around the solenoid core;
- a guide tube being mounted in the receiving hole in the solenoid core and having
- an axial hole being defined through the guide tube;
- and
- a connecting end being formed on one end of the guide tube and protruding out of the receiving hole in the solenoid core;
- a sleeve being mounted slidably in the receiving hole in the solenoid core and around the guide tube and having a protruding end and at least one engaging tab formed on and protruding from the protruding end of the sleeve and disposed adjacent to the connecting end of the guide tube;
- and
- a clutch cap being mounted around the connecting end of the guide tube and having at least one engaging notch selectively and detachably engaging respectively a corresponding engaging tab on the sleeve.
Dependencies are inferred from the claim text.