EP2083137A1 - Electric lock - Google Patents
Electric lock Download PDFInfo
- Publication number
- EP2083137A1 EP2083137A1 EP08250328A EP08250328A EP2083137A1 EP 2083137 A1 EP2083137 A1 EP 2083137A1 EP 08250328 A EP08250328 A EP 08250328A EP 08250328 A EP08250328 A EP 08250328A EP 2083137 A1 EP2083137 A1 EP 2083137A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- handle
- rotary knob
- unit
- connecting rod
- clutch gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/06—Controlling mechanically-operated bolts by electro-magnetically-operated detents
- E05B47/0676—Controlling mechanically-operated bolts by electro-magnetically-operated detents by disconnecting the handle
- E05B47/068—Controlling mechanically-operated bolts by electro-magnetically-operated detents by disconnecting the handle axially, i.e. with an axially disengaging coupling element
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B13/00—Devices preventing the key or the handle or both from being used
- E05B13/10—Devices preventing the key or the handle or both from being used formed by a lock arranged in the handle
- E05B13/101—Devices preventing the key or the handle or both from being used formed by a lock arranged in the handle for disconnecting the handle
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B2047/0014—Constructional features of actuators or power transmissions therefor
- E05B2047/0018—Details of actuator transmissions
- E05B2047/002—Geared transmissions
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B2047/0014—Constructional features of actuators or power transmissions therefor
- E05B2047/0018—Details of actuator transmissions
- E05B2047/0026—Clutches, couplings or braking arrangements
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B2047/0094—Mechanical aspects of remotely controlled locks
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B47/0012—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with rotary electromotors
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0038—Operating or controlling locks or other fastening devices by electric or magnetic means using permanent magnets
Definitions
- This invention relates to an electric lock, and more particularly to an electric lock that can be operated either electrically or manually.
- the object of this invention is to provide an electric lock that is durable and that can be locked and unlocked precisely.
- 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.
- the first preferred embodiment of an electric lock is mounted to a door (not shown), and includes a lock housing unit 3, a handle unit 4, a manual operation mechanism 5, and an electric control mechanism 6.
- the lock housing unit 3 includes a first lock housing 31 mounted to an inner side surface of the door, and a second lock housing 32 mounted to an outer side surface of the door.
- the first lock housing 31 has an upright wall 311, and a surrounding wall 313 extending from a periphery of the upright wall 311 toward the door to define an accommodating chamber 312.
- the upright wall 311 has a circular mounting hole 314 and two mounting blocks 315 (only one is shown in Fig. 1 ) flanking the mounting hole 314 and extending into the accommodating space 312.
- the second lock housing 32 has an upright wall 321 and a surrounding wall 322 extending from a periphery of the upright wall 321 toward the door.
- the upright wall 321 has a mounting hole 323 and a plurality of pushbutton-receiving holes 324 located above the mounting hole 323.
- the handle unit 4 includes a first handle 41 disposed rotatably on the first lock housing 31 and extending into the mounting hole 314, a second handle 43 disposed rotatably on the second lock housing 32 and extending into the mounting hole 323, two return units 44 for respectively returning the first and second handles 41, 43, a first connecting seat 45 sleeved on and co-rotatable with the first handle 41, a second connecting seat 46 connected to the second handle 43, and a handle-connecting rod 47 extending into and co-rotatable with the first and second connecting seats 45, 46.
- the first handle 41 includes a handle housing 411, and a mounting seat 412 fixed within the handle housing 411.
- the handle housing 411 has a cylindrical mounting portion 413, and a rotary lever portion 414 extending radially and outwardly from the mounting portion 413.
- the mounting seat 412 has a surrounding wall 416 defining a mounting passage 415.
- the surrounding wall 416 has a rotation-limiting portion 40 extending into the accommodating chamber 312.
- the rotation-limiting portion 40 is formed with diametrically opposed first and second notches 401, 402, a circumferentially extending limiting slot 403 having a first end 405 and a second end 406 that is in spatial communication with the first notch 401, and a ring-engaging groove unit 404 disposed in proximity to an end of the rotation-limiting portion 40.
- the second handle 43 includes a handle housing 431 and a mounting seat 433 fixed within a mounting portion 432 of the handle housing 431.
- the first connecting seat 45 has a central portion 451 extending into the mounting passage 415 in the first handle 41, and two wings 452 extending respectively from two opposite sides of the central portion 451 and engaging respectively the first and second notches 401, 402 in the first handle 41 so as to allow for co-rotation of the first connecting seat 45 with the first handle 41.
- the second connecting seat 46 is mounted rotatably within the mounting seat 433 of the second handle 43.
- the handle-connecting rod 47 is configured as a rectangular tube, and extends through a rectangular hole 453 in the first connecting seat 45 and into the second connecting seat 46.
- the handle-connecting rod 47 can drive a spring bolt (not shown) in a known manner.
- the manual operation mechanism 5 includes a rotary knob unit 50 (see Fig. 2 ), a first attracting member 54 mounted fixedly to the rotary knob unit 50, a key-operated lockset 55 mounted to the second handle 43, a lock-connecting rod 56 connected to and rotatable by the rotary knob unit 50 and the key-operated lockset 55, and an engaging plate unit 57 sleeved on and driven by the lock-connecting rod 56 to allow for or prevent co-rotation of the second handle 43 with the lock-connecting rod 56.
- the rotary knob unit 50 includes a rotary knob 51 mounted rotatably on the first handle 41, and a hand-operated connecting rod 52 co-rotatable with the rotary knob 51.
- the rotary knob 51 includes a disc portion 511, an actuation block 512 extending from the disc portion 511 in a direction away from the first handle 41 and allowing for manual operation, a surrounding wall 513 extending from a periphery of the disc portion 511 in a direction toward the first handle 41, and a hole-defining wall 514 extending from the disc portion 511 in a direction toward the first handle 41.
- the surrounding wall 513 is disposed around the hole-defining wall 514, and has two hook-engaging slots 515 (only one is shown in Fig. 2 ) formed radially therethrough.
- the hole-defining wall 514 defines an insert hole 516.
- the hand-operated connecting rod 52 has a handle-retaining portion 521, an annular mounting portion 522 disposed around the handle-retaining portion 521, and a connecting portion 523 interconnecting the handle-retaining portion 521 and the annular mounting portion 522 to thereby form a curved slot 524 between the handle-retaining portion 521 and the annular mounting portion 522.
- the handle-retaining portion 521 is formed with two retaining hooks 525 (only one is shown in Fig. 2 ) engaging respectively the hook-engaging slots 515 in the rotary knob 51 so as to allow for co-rotation of the hand-operated connecting rod 52 with the rotary knob 51.
- the annular mounting portion 522 is formed with an annular flange 526 allowing the first attracting member 54 to be mounted fixedly therewithin.
- the connecting portion 523 of the hand-operated connecting rod 52 is moved into the limiting slot 403 in the rotation-limiting portion 40 of the first handle 41 via the first notch 401.
- the retaining hooks 525 of the hand-operated connecting rod 52 are moved respectively into the hook-engaging slots 515 in the rotary knob 51.
- the connecting portion 523 is movable between the first end 405 and second end 406 of the limiting slot 403 so that the maximum rotational angle of the hand-operated connecting rod 52 relative to the first handle 41 is 90°.
- a C-shaped retaining ring 58 is received within the ring-engaging groove unit 404 in the first handle 41 to prevent removal of the first handle 41 from the first lock housing 31.
- the electric control mechanism 6 includes a power source unit 61 mounted within the accommodating chamber 312 in the first lock housing 31, a pushbutton unit 62 mounted on the second lock housing 32 and aligned with the pushbutton-receiving holes 324, a positioning seat 63 mounted to the mounting blocks 315 of the first lock housing 31, a clutch gear 64 mounted to the positioning seat 63 and driven by the power source unit 61 to rotate in two directions, a pair of second and third attracting members 65, 65' mounted fixedly to the clutch gear 64 and spaced apart from each other by an angle of 180°, a circuit board 67 mounted to the first lock housing 31, a micro-switch 66 disposed on the circuit board 67, and a sensing switch 68.
- the power source unit 61 includes a motor 611 disposed in the accommodating space 312 in the first lock housing 31, a worm rod 612 driven by the motor 611, and a reduction gear 613 driven by the worm rod 612.
- the clutch gear 64 has a meshing portion 641 meshing with the reduction gear 613, a pair of first and second control portions 642, 642' projecting toward the circuit board 67 and each rotatable to contact and activate the micro-switch 66 to thereby stop operation of the power source unit 6, and a central hole 643.
- the meshing portion 641 has two diametrically opposed mounting holes 644 allowing the second and third attracting members 65, 65' to be mounted respectively therewithin.
- the first, second, and third attracting members 54, 65, 65' are magnets.
- the first attracting member 54 or the second and third attracting members 65, 65' may be made of a magnetically conductive metallic material.
- the lock-connecting rod 56 is configured as a plate having a rectangular cross-section.
- the lock-connecting rod 56 when the electric lock is in an unlocking state, the lock-connecting rod 56 is horizontal, and the connecting portion 523 of the hand-operated connecting rod 52 is disposed at the first end 405 of the limiting slot 403 in the first handle 41. Furthermore, the second attracting member 65 is adjacent to the first attracting member 54, and the first control portion 642 of the clutch gear 64 is aligned with the micro-switch 66. Further, the engaging plate unit 57 projects from the second connecting seat 46 to allow for co-rotation of the second handle 43 with the handle-connecting rod 47.
- the electric lock can be locked manually by rotating the rotary knob 51 or inserting a key (not shown) into the lockset 55 and rotating the key.
- the rotary knob 51 is rotated 90°, the hand-operated connecting rod 52 and the lock-connecting rod 56 co-rotate therewith to move the connecting portion 523 of the hand-operated connecting rod 52 to the second end 406 of the limiting slot 403.
- the lock-connecting rod 56 is rotated to a vertical position to retract the engaging plate unit 57 into the second connecting seat 46, thereby preventing co-rotation of the second handle 43 with the lock-connecting rod 56 and, thus, opening of the door through operation of the second handle 43.
- the first attracting member 54 is aligned with the sensing switch 68 along a longitudinal direction of the hand-operated connecting rod 52.
- the sensing switch 68 detects alignment of the first attracting member 54 therewith (i.e., the locking state of the electric lock)
- a signal is emitted therefrom to the circuit board 67.
- the electric lock may be locked electrically by operating the pushbutton unit 62 or a remote controller (not shown) to activate the motor 611 of the power source unit 6.
- the clutch gear 64 is rotated clockwise.
- the second attracting member 65 comes into alignment with the first attracting member 54 to generate a magnetic attraction force therebetween, to thereby allow for subsequent co-rotation of the hand-operated connecting rod 52 and the rotary knob 51 with the clutch gear 64.
- the connecting portion 523 of the hand-operated connecting rod 52 is disposed at the second end 406 of the limiting slot 403
- the second control portion 642' contacts and activates the micro-switch 66 to stop operation of the power source unit 61.
- the pushbutton unit 62 or the remote controller is operated to rotate the clutch gear 64 counterclockwise.
- the rotary knob 51 is rotated counterclockwise.
- the third attracting member 65' comes into alignment with the first attracting member 54 to generate a magnetic attraction force therebetween to thereby allow for subsequent co-rotation of the hand-operated connecting rod 52 and the rotary knob 51 with the clutch gear 64.
- Fig. 8 shows the second preferred embodiment of an electric lock according to this invention, which is configured as a so-called "auxiliary lock” (i.e., a lock that does not have any handle) and which is similar in construction to the first preferred embodiment.
- the rotary knob unit 50 is one piece configured as a rotary knob, and includes an upright wall 511, an actuation block 512, and a rotating shaft portion having an end surface 514' formed with a cross-shaped slot 516.
- the cross-shaped slot 516 has two straight slot portions intersecting each other.
- the lock-connecting rod 56 has an end engaging fittingly one of the straight slot portions of the cross-shaped slot 516 to allow for co-rotation of the lock-connecting rod 56 and the rotary knob unit 50.
- Two first attracting members 54 are disposed fixedly on the rotating shaft portion of the rotary knob unit 50, and are spaced apart from each other by an angle of 180°.
- the clutch gear 64 is sleeved rotatably around the rotating shaft portion of the rotary knob unit 50.
- the second and third attracting members 65, 65' are disposed fixedly in the clutch gear 64.
- Each of the second and third attracting members 65, 65' is rotatable relative to the rotary knob unit 50 to align with the corresponding first attracting member 54 along a radial direction of the rotary knob 51.
Landscapes
- Lock And Its Accessories (AREA)
Abstract
Description
- This invention relates to an electric lock, and more particularly to an electric lock that can be operated either electrically or manually.
- In
US Patent Application Publication No. 2007/0169525 , the applicant discloses an electric lock operable either electrically or manually to increase convenience during use. However, protrusions of rotatable members of the electric lock experience fast wear due to frequent contact therebetween, thereby reducing the service life of the electric lock. Furthermore, locking and unlocking of the electric lock cannot be controlled precisely. - The object of this invention is to provide an electric lock that is durable and that can be locked and unlocked precisely.
- According to this invention, 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.
- As such, since no friction occurs among rotating parts of the electric lock, wearing of the rotating parts can be prevented, thereby increasing the service life of the electric lock and precision in controlling locking and unlocking of the electric lock.
- These and other features and advantages of this invention will become apparent in the following detailed description of the preferred embodiments of this invention, with reference to the accompanying drawings, in which:
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Fig. 1 is an exploded perspective view of the first preferred embodiment of an electric lock according to this invention; -
Fig. 2 is a fragmentary exploded perspective view of the first preferred embodiment, illustrating positioning of a hand-operated connecting rod relative to a rotary knob when the electric lock is in an unlocking state; -
Fig. 3 is a fragmentary schematic side view of the first preferred embodiment in the unlocking state; -
Fig. 4 is a fragmentary schematic side view of the first preferred embodiment, illustrating positioning of the hand-operated connecting rod relative to a first handle when the electric lock is in the unlocking state; -
Fig. 5 is a view similar toFig. 3 but in a locking state; -
Fig. 6 is a view similar toFig. 2 but illustrating positioning of the hand-operated connecting rod relative to the rotary knob when the electric lock is in a locking state; -
Fig. 7 is a view similar toFig. 4 but illustrating positioning of the hand-operated connecting rod relative to the first handle when the electric lock is in the locking state; and -
Fig. 8 is a fragmentary sectional view of the second preferred embodiment of an electric lock according to this invention. - Referring to
Figs. 1 ,2 , and3 , the first preferred embodiment of an electric lock according to this invention is mounted to a door (not shown), and includes a lock housing unit 3, ahandle unit 4, amanual operation mechanism 5, and an electric control mechanism 6. - The lock housing unit 3 includes a
first lock housing 31 mounted to an inner side surface of the door, and asecond lock housing 32 mounted to an outer side surface of the door. Thefirst lock housing 31 has anupright wall 311, and a surroundingwall 313 extending from a periphery of theupright wall 311 toward the door to define anaccommodating chamber 312. Theupright wall 311 has acircular mounting hole 314 and two mounting blocks 315 (only one is shown inFig. 1 ) flanking themounting hole 314 and extending into theaccommodating space 312. Thesecond lock housing 32 has anupright wall 321 and a surroundingwall 322 extending from a periphery of theupright wall 321 toward the door. Theupright wall 321 has amounting hole 323 and a plurality of pushbutton-receivingholes 324 located above themounting hole 323. - The
handle unit 4 includes afirst handle 41 disposed rotatably on thefirst lock housing 31 and extending into themounting hole 314, asecond handle 43 disposed rotatably on thesecond lock housing 32 and extending into themounting hole 323, tworeturn units 44 for respectively returning the first andsecond handles seat 45 sleeved on and co-rotatable with thefirst handle 41, a second connectingseat 46 connected to thesecond handle 43, and a handle-connectingrod 47 extending into and co-rotatable with the first and second connectingseats - The
first handle 41 includes ahandle housing 411, and amounting seat 412 fixed within thehandle housing 411. Thehandle housing 411 has acylindrical mounting portion 413, and arotary lever portion 414 extending radially and outwardly from themounting portion 413. Themounting seat 412 has a surroundingwall 416 defining amounting passage 415. The surroundingwall 416 has a rotation-limitingportion 40 extending into theaccommodating chamber 312. The rotation-limitingportion 40 is formed with diametrically opposed first andsecond notches slot 403 having afirst end 405 and asecond end 406 that is in spatial communication with thefirst notch 401, and a ring-engaging groove unit 404 disposed in proximity to an end of the rotation-limitingportion 40. - The
second handle 43 includes ahandle housing 431 and amounting seat 433 fixed within amounting portion 432 of thehandle housing 431. The first connectingseat 45 has acentral portion 451 extending into themounting passage 415 in thefirst handle 41, and twowings 452 extending respectively from two opposite sides of thecentral portion 451 and engaging respectively the first andsecond notches first handle 41 so as to allow for co-rotation of the first connectingseat 45 with thefirst handle 41. The second connectingseat 46 is mounted rotatably within themounting seat 433 of thesecond handle 43. The handle-connectingrod 47 is configured as a rectangular tube, and extends through arectangular hole 453 in the first connectingseat 45 and into the second connectingseat 46. The handle-connectingrod 47 can drive a spring bolt (not shown) in a known manner. - The
manual operation mechanism 5 includes a rotary knob unit 50 (seeFig. 2 ), a first attractingmember 54 mounted fixedly to therotary knob unit 50, a key-operatedlockset 55 mounted to thesecond handle 43, a lock-connectingrod 56 connected to and rotatable by therotary knob unit 50 and the key-operatedlockset 55, and anengaging plate unit 57 sleeved on and driven by the lock-connectingrod 56 to allow for or prevent co-rotation of thesecond handle 43 with the lock-connectingrod 56. Therotary knob unit 50 includes arotary knob 51 mounted rotatably on thefirst handle 41, and a hand-operated connectingrod 52 co-rotatable with therotary knob 51. - The
rotary knob 51 includes adisc portion 511, anactuation block 512 extending from thedisc portion 511 in a direction away from thefirst handle 41 and allowing for manual operation, a surroundingwall 513 extending from a periphery of thedisc portion 511 in a direction toward thefirst handle 41, and a hole-definingwall 514 extending from thedisc portion 511 in a direction toward thefirst handle 41. The surroundingwall 513 is disposed around the hole-definingwall 514, and has two hook-engaging slots 515 (only one is shown inFig. 2 ) formed radially therethrough. The hole-definingwall 514 defines aninsert hole 516. The hand-operated connectingrod 52 has a handle-retainingportion 521, anannular mounting portion 522 disposed around the handle-retainingportion 521, and a connectingportion 523 interconnecting the handle-retainingportion 521 and theannular mounting portion 522 to thereby form acurved slot 524 between the handle-retainingportion 521 and theannular mounting portion 522. The handle-retainingportion 521 is formed with two retaining hooks 525 (only one is shown inFig. 2 ) engaging respectively the hook-engaging slots 515 in therotary knob 51 so as to allow for co-rotation of the hand-operated connectingrod 52 with therotary knob 51. Theannular mounting portion 522 is formed with anannular flange 526 allowing the first attractingmember 54 to be mounted fixedly therewithin. During assembly of therotary knob unit 50 and thefirst handle 41, the connectingportion 523 of the hand-operated connectingrod 52 is moved into thelimiting slot 403 in the rotation-limitingportion 40 of thefirst handle 41 via thefirst notch 401. Subsequently, the retaining hooks 525 of the hand-operated connectingrod 52 are moved respectively into the hook-engaging slots 515 in therotary knob 51. As such, the connectingportion 523 is movable between thefirst end 405 andsecond end 406 of thelimiting slot 403 so that the maximum rotational angle of the hand-operated connectingrod 52 relative to thefirst handle 41 is 90°. An end of the lock-connectingrod 56 engages fittingly theinsert hole 516 in therotary knob 51 so as to allow for co-rotation with therotary knob 51. Theengaging plate unit 57 is disposed within the second connectingseat 46. The lock-connectingrod 56 is rotatable to activate theengaging plate unit 57 to thereby lock or unlock the electric lock. Since such locking and unlocking operations do not pertain to this invention, a further description thereof will be omitted herein for the sake of brevity. A C-shaped retaining ring 58 is received within the ring-engaging groove unit 404 in thefirst handle 41 to prevent removal of thefirst handle 41 from thefirst lock housing 31. - The electric control mechanism 6 includes a
power source unit 61 mounted within theaccommodating chamber 312 in thefirst lock housing 31, apushbutton unit 62 mounted on thesecond lock housing 32 and aligned with the pushbutton-receivingholes 324, apositioning seat 63 mounted to themounting blocks 315 of thefirst lock housing 31, aclutch gear 64 mounted to thepositioning seat 63 and driven by thepower source unit 61 to rotate in two directions, a pair of second and third attractingmembers 65, 65' mounted fixedly to theclutch gear 64 and spaced apart from each other by an angle of 180°, acircuit board 67 mounted to thefirst lock housing 31, a micro-switch 66 disposed on thecircuit board 67, and asensing switch 68. Thepower source unit 61 includes amotor 611 disposed in theaccommodating space 312 in thefirst lock housing 31, aworm rod 612 driven by themotor 611, and areduction gear 613 driven by theworm rod 612. Theclutch gear 64 has ameshing portion 641 meshing with thereduction gear 613, a pair of first andsecond control portions 642, 642' projecting toward thecircuit board 67 and each rotatable to contact and activate themicro-switch 66 to thereby stop operation of the power source unit 6, and acentral hole 643. Themeshing portion 641 has two diametrically opposedmounting holes 644 allowing the second and third attractingmembers 65, 65' to be mounted respectively therewithin. In this embodiment, the first, second, and third attractingmembers member 54 or the second and third attractingmembers 65, 65' may be made of a magnetically conductive metallic material. - The lock-connecting
rod 56 is configured as a plate having a rectangular cross-section. - With further reference to
Figs. 3 and4 , when the electric lock is in an unlocking state, the lock-connectingrod 56 is horizontal, and the connectingportion 523 of the hand-operated connectingrod 52 is disposed at thefirst end 405 of thelimiting slot 403 in thefirst handle 41. Furthermore, the second attractingmember 65 is adjacent to the first attractingmember 54, and thefirst control portion 642 of theclutch gear 64 is aligned with the micro-switch 66. Further, theengaging plate unit 57 projects from the second connectingseat 46 to allow for co-rotation of thesecond handle 43 with the handle-connectingrod 47. In this state, when an external force is applied to pivot one of the first andsecond handles rod 47 and the other of the first andsecond handles second handles return units 44 to their original positions. - With particular reference to
Figs. 1 ,5 ,6 , and7 , the electric lock can be locked manually by rotating therotary knob 51 or inserting a key (not shown) into thelockset 55 and rotating the key. When therotary knob 51 is rotated 90°, the hand-operated connectingrod 52 and the lock-connectingrod 56 co-rotate therewith to move the connectingportion 523 of the hand-operated connectingrod 52 to thesecond end 406 of the limitingslot 403. Hence, the lock-connectingrod 56 is rotated to a vertical position to retract theengaging plate unit 57 into the second connectingseat 46, thereby preventing co-rotation of thesecond handle 43 with the lock-connectingrod 56 and, thus, opening of the door through operation of thesecond handle 43. During rotation of the hand-operated connectingrod 52, when the lock-connectingrod 56 is rotated to the vertical position, the first attractingmember 54 is aligned with thesensing switch 68 along a longitudinal direction of the hand-operated connectingrod 52. When thesensing switch 68 detects alignment of the first attractingmember 54 therewith (i.e., the locking state of the electric lock), a signal is emitted therefrom to thecircuit board 67. Hence, if a button-pushing operation is performed on thepushbutton unit 62 in order to lock the door, operation of the power source unit 6 can be prevented. - Alternatively, the electric lock may be locked electrically by operating the
pushbutton unit 62 or a remote controller (not shown) to activate themotor 611 of the power source unit 6. When themotor 611 is activated, theclutch gear 64 is rotated clockwise. Upon clockwise rotation of theclutch gear 64 by 45°, the second attractingmember 65 comes into alignment with the first attractingmember 54 to generate a magnetic attraction force therebetween, to thereby allow for subsequent co-rotation of the hand-operated connectingrod 52 and therotary knob 51 with theclutch gear 64. When the connectingportion 523 of the hand-operated connectingrod 52 is disposed at thesecond end 406 of the limitingslot 403, the second control portion 642' contacts and activates the micro-switch 66 to stop operation of thepower source unit 61. - To unlock the electric lock electrically, the
pushbutton unit 62 or the remote controller is operated to rotate theclutch gear 64 counterclockwise. - To unlock the electric lock manually, the
rotary knob 51 is rotated counterclockwise. - Upon counterclockwise rotation of the
clutch gear 64 by 45°, the third attracting member 65' comes into alignment with the first attractingmember 54 to generate a magnetic attraction force therebetween to thereby allow for subsequent co-rotation of the hand-operated connectingrod 52 and therotary knob 51 with theclutch gear 64. -
Fig. 8 shows the second preferred embodiment of an electric lock according to this invention, which is configured as a so-called "auxiliary lock" (i.e., a lock that does not have any handle) and which is similar in construction to the first preferred embodiment. In this embodiment, therotary knob unit 50 is one piece configured as a rotary knob, and includes anupright wall 511, anactuation block 512, and a rotating shaft portion having an end surface 514' formed with across-shaped slot 516. Thecross-shaped slot 516 has two straight slot portions intersecting each other. The lock-connectingrod 56 has an end engaging fittingly one of the straight slot portions of thecross-shaped slot 516 to allow for co-rotation of the lock-connectingrod 56 and therotary knob unit 50. - Two first attracting
members 54 are disposed fixedly on the rotating shaft portion of therotary knob unit 50, and are spaced apart from each other by an angle of 180°. Theclutch gear 64 is sleeved rotatably around the rotating shaft portion of therotary knob unit 50. The second and third attractingmembers 65, 65' are disposed fixedly in theclutch gear 64. Each of the second and third attractingmembers 65, 65' is rotatable relative to therotary knob unit 50 to align with the corresponding first attractingmember 54 along a radial direction of therotary knob 51. - Since co-rotation of the
clutch gear 64 with therotary knob unit 50 is enabled by a magnetic attraction force generated between the first attracting member(s) 54 and the second and third attractingmembers 65, 65' , no friction occurs among rotating parts of the electric lock. As a result, wearing of the rotating parts can be prevented, thereby increasing the service life of the electric lock and precision in controlling locking and unlocking of the electric lock.
Claims (9)
- An electric lock comprising:a manual operation mechanism (5) includinga rotary knob unit (50),a key-operated lockset (55), anda lock-connecting rod (52) connected to and rotatable by the rotary knob unit (50) and the key-operated lockset (55); andan electronic control mechanism (6) includingcharacterized by:a power source unit (61), anda clutch gear (64) driven by the power source unit (61) to rotate in two directions;the manual operation mechanism (5) further including a first attracting member (54) mounted fixedly to the rotary knob unit (50); andthe electric control mechanism (6) further including a second attracting member (65) mounted fixedly to the clutch gear (64);wherein, when the clutch gear (64) is driven by the power source unit (61) to rotate to align the first and second attracting members (54, 65) with each other, a magnetic attraction force is generated between the first and second attracting members (54, 65) to allow for co-rotation of the rotary knob unit (50) with the clutch gear (64).
- The electric lock as claimed in Claim 1, characterized in that the electric control mechanism (6) further includes a second attracting member (65') mounted fixedly to the clutch gear (64) and spaced apart from the second attracting member (65) by an angle of 180 degrees, a magnetic attraction force being generated between the first and second attracting members (54, 65) to thereby allow for co-rotation of the rotary knob unit (50) with the clutch gear (64) when the clutch gear (64) is driven by the power source unit (61) to rotate to align the first and second attracting members (54, 65) with each other.
- The electric lock as claimed in Claim 1, further characterized by a lock housing unit (3) for mounting with the electric control mechanism (6), and a handle unit (4) mounted on the lock housing unit (3), the handle unit (4) including a first handle (41) disposed rotatably on the lock housing unit (3) and allowing the rotary knob unit (50) to be mounted rotatably thereon, and a second handle (43) disposed rotatably on the lock housing unit (3) and allowing the key-operated lockset (55) to mounted thereon.
- The electric lock as claimed in Claim 3, further characterized in that:the first handle (41) has a rotation-limiting portion (40) formed with at least one notch (401) and a circumferentially extending limiting slot (403) that has a first end (405) and a second end (406) in spatial communication with the notch (401); andthe rotary knob unit (50) includes a rotary knob (51), and a hand-operated connecting rod (52), the hand-operated connecting rod (52) having a handle-retaining portion (521) connected to and co-rotatable with the rotary knob (51), an annular mounting portion (522) disposed around the handle-retaining portion (521) and allowing the first attracting member (54) to be mounted thereon, and a connecting portion (523) interconnecting the handle-retaining portion (521) and the mounting portion, the connecting portion (523) being received movably within the limiting slot (403) in the first handle (41) and movable between the first end (405) and the second end (406) so that a maximum rotational angle of the hand-operated connecting rod (52) relative to the first handle (41) is 90°, the notch (401) in the first handle (41) allowing the connecting portion (523) to be moved into the limiting slot (403) therethrough.
- The electric lock as claimed in Claim 4, further characterized in that the rotary knob (51) includes a disc portion (511), an actuation block (512) projecting from the disc portion (511) and allowing for manual operation, and a surrounding wall (513) extending from the disc portion (511) away from the actuation block (512) and having a hook-engaging slot (515) formed radially therethrough, the handle-retaining portion (521) of the hand-operated connecting rod (52) being formed with a retaining hook (525) engaging the hook-engaging slot (515) in the rotary knob (51) so as to allow for co-rotation of the hand-operated connecting rod (52) with the rotary knob (51).
- The electric lock as claimed in Claim 4, further characterized in that the first handle (41) is formed with two the notches (401, 402), the handle unit (4) further includes a first connecting seat (45), and a handle-connecting rod (47) extending through and co-rotatable with the first connecting seat (45), the first connecting seat (45) being formed with two wings (452) engaging respectively the notches (401, 402) in the first handle (41) so as to allow for co-rotation with the first handle (41).
- The electric lock as claimed in Claim 4, further characterized in that the first and second attracting members (54, 65) are rotatable relative to each other to align with each other along a longitudinal direction of the hand-operated connecting rod (52).
- The electric lock as claimed in Claim 1, characterized in that the electric control mechanism (6) further includes a circuit board (67) provided with a micro-switch (66), the power source unit (61) including a motor (611) and a reduction gear (613) driven by the motor (611), the clutch gear (64) having a meshing portion (641) meshing with the reduction gear (613), and a control portion (642, 642') rotatable to activate the micro-switch (66) to thereby stop operation of the power source unit (61).
- The electric lock as claimed in Claim 1, characterized in that the clutch gear (64) is disposed rotatably around the rotary knob unit (50), the first and second attracting members (54, 65) being rotatable relative to each other to align with each other along a radial direction of the rotary knob unit (50).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08250328A EP2083137A1 (en) | 2008-01-28 | 2008-01-28 | Electric lock |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08250328A EP2083137A1 (en) | 2008-01-28 | 2008-01-28 | Electric lock |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2083137A1 true EP2083137A1 (en) | 2009-07-29 |
Family
ID=39639418
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08250328A Withdrawn EP2083137A1 (en) | 2008-01-28 | 2008-01-28 | Electric lock |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP2083137A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2302149A1 (en) * | 2009-09-29 | 2011-03-30 | CEStronics GmbH | Actuation device, e.g. lock cylinder or handle fitting with a switching element which can be shifted magnetically using a switch element |
EP2466043A1 (en) * | 2010-12-20 | 2012-06-20 | Microhard S.R.L. | A coupling device of an external handle to a lock |
US20210332610A1 (en) * | 2020-04-28 | 2021-10-28 | Jsw Pacific Corporation | Electronic Lock Having Dislocated Transmission Mechanism Inside |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0140028A2 (en) * | 1983-10-24 | 1985-05-08 | Klaus Dr. Meister | Safety locking installation with a biaxial clutch device, locking magnet, driver and reserve circuit |
US20040177660A1 (en) * | 2003-03-14 | 2004-09-16 | Hung-Cheng Tsai | Electric door lock with a coupling mechanism for selective engagement between a deadbolt operating spindle and a door handle |
US20070169525A1 (en) | 2006-01-20 | 2007-07-26 | Ez Trend Technology Co., Ltd. | Electric door lock |
-
2008
- 2008-01-28 EP EP08250328A patent/EP2083137A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0140028A2 (en) * | 1983-10-24 | 1985-05-08 | Klaus Dr. Meister | Safety locking installation with a biaxial clutch device, locking magnet, driver and reserve circuit |
US20040177660A1 (en) * | 2003-03-14 | 2004-09-16 | Hung-Cheng Tsai | Electric door lock with a coupling mechanism for selective engagement between a deadbolt operating spindle and a door handle |
US20070169525A1 (en) | 2006-01-20 | 2007-07-26 | Ez Trend Technology Co., Ltd. | Electric door lock |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2302149A1 (en) * | 2009-09-29 | 2011-03-30 | CEStronics GmbH | Actuation device, e.g. lock cylinder or handle fitting with a switching element which can be shifted magnetically using a switch element |
EP2466043A1 (en) * | 2010-12-20 | 2012-06-20 | Microhard S.R.L. | A coupling device of an external handle to a lock |
ITMI20102326A1 (en) * | 2010-12-20 | 2012-06-21 | Microhard Srl | PAIR OF THE EXTERNAL HANDLE WITH A LOCK |
US20210332610A1 (en) * | 2020-04-28 | 2021-10-28 | Jsw Pacific Corporation | Electronic Lock Having Dislocated Transmission Mechanism Inside |
US11555333B2 (en) * | 2020-04-28 | 2023-01-17 | Jsw Pacific Corporation | Electronic lock having dislocated transmission mechanism inside |
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