초록 ▼

An electric lock includes a manual operation mechanism and an electric control mechanism. The manual operation mechanism includes a rotary knob unit, a first attracting member mounted fixedly to the rotary knob unit, a key-operated lockset, and a lock-connecting rod connected to and rotatable by the

An electric lock includes a manual operation mechanism and an electric control mechanism. The manual operation mechanism includes a rotary knob unit, a first attracting member mounted fixedly to the rotary knob unit, a key-operated lockset, and a lock-connecting rod connected to and rotatable by the rotary knob unit and the key-operated lockset. The electric control mechanism includes a power source unit, a clutch gear driven by the power source unit to rotate in two directions, and a second attracting member mounted fixedly to the clutch gear. When the clutch gear is driven by the power source unit to rotate to align the first and second attracting members with each other, a magnetic attraction force is generated between the first and second attracting members to allow for co-rotation of the rotary knob unit with the clutch gear.

대표청구항 ▼

I claim: 1. An electric lock comprising: a manual operation mechanism including a rotary knob unit, a first attracting member mounted fixedly to said rotary knob unit, a key-operated lockset, and a lock-connecting rod connected to and rotatable by said rotary knob unit and said key-operated lockset

I claim: 1. An electric lock comprising: a manual operation mechanism including a rotary knob unit, a first attracting member mounted fixedly to said rotary knob unit, a key-operated lockset, and a lock-connecting rod connected to and rotatable by said rotary knob unit and said key-operated lockset; an electric control mechanism including a power source unit, a clutch gear driven by said power source unit to rotate in two directions, and a second attracting member mounted fixedly to said clutch gear; and a lock housing unit for mounting with said electric control mechanism, and a handle unit mounted on said lock housing unit, said handle unit including a first handle disposed rotatable on said lock housing unit and allowing said rotary knob unit to be mounted rotatably thereon, and a second handle disposed rotatable on said lock housing unit and allowing said key-operated lockset to be mounted thereon; wherein, when said clutch gear is driven by said power source unit to rotate to align said first and second attracting members with each other, a magnetic attraction force is generated between said first and second attracting members to allow for co-rotation of said rotary knob unit with said clutch gear; wherein, said first handle has a rotation-limiting portion formed with at least one notch and a circumferentially extending limiting slot that has a first end and a second end in spatial communication with said notch; and said rotary knob unit includes a rotary knob, and a hand-operated connecting rod, said hand-operated connecting rod having a handle-retaining portion connected to and co-rotatable with said rotary knob, an annular mounting portion disposed around said handle-retaining portion and allowing said first attracting member to be mounted thereon, and a connecting portion interconnecting said handle-retaining portion and said mounting portion, said connecting portion being received movably within said limiting slot in said first handle and movable between said first end and said second end so that a maximum rotational angle of said hand-operated connecting rod relative to said first handle is 90°, said notch in said first handle allowing said connecting portion to be moved into said limiting slot therethrough. 2. The electric lock as claimed in claim 1, wherein said electric control mechanism further includes a third attracting member mounted fixedly to said clutch gear and spaced apart from said second attracting member by an angle of 180 degrees, a magnetic attraction force being generated between said first and third attracting members to thereby allow for co-rotation of said rotary knob unit with said clutch gear when said clutch gear is driven by said power source unit to rotate to align said first and third attracting members with each other. 3. The electric lock as claimed in claim 1, wherein said rotary knob includes a disc portion, an actuation block projecting from said disc portion and allowing for manual operation, and a surrounding wall extending from said disc portion away from said actuation block and having a hook-engaging slot formed radially therethrough, said handle-retaining portion of said hand-operated connecting rod being formed with a retaining hook engaging said hook-engaging slot in said rotary knob so as to allow for co-rotation of said hand-operated connecting rod with said rotary knob. 4. The electric lock as claimed in claim 1, wherein said first handle is formed with two said notches, said handle unit further including a first connecting seat, and a handle-connecting rod extending through and co-rotatable with said first connecting seat, said first connecting seat being formed with two wings engaging respectively said notches in said first handle so as to allow for co-rotation with said first handle. 5. The electric lock as claimed in claim 1, wherein said first and second attracting members are rotatable relative to each other to align with each other along a longitudinal direction of said hand-operated connecting rod. 6. The electric lock as claimed in claim 1, wherein said electric control mechanism further includes a circuit board provided with a micro-switch, said power source unit including a motor and a reduction gear driven by said motor, said clutch gear having a meshing portion meshing with said reduction gear, and a control portion rotatable to activate said micro-switch to thereby stop operation of said power source unit. 7. The electric lock as claimed in claim 1, wherein said clutch gear is disposed rotatably around said rotary knob unit, said first and second attracting members being rotatable relative to each other to align with each other along a radial direction of said rotary knob unit.