Abstract: This disclosure discloses a restraint device including a pair of bracelets that are adjustable in distance therebetween, while at least one of the bracelets can be dually engaged during a restraint and dually disengaged not during the restraint. Further, this disclosure discloses a sleeve to enable a restraint device to be converted from a “chain style” into a “hinge style” and vice versa. Additionally, this disclosure discloses a restraint device including a first arm and a second arm, where the second arm is elastically coupled to the first arm in order to avoid overtightening when restraining.

Abstract: An opening control of a motor vehicle opening has a housing, a handle rotatably housed completely or partially in the housing, in an ejected position the handle extends at least partially from the housing, the handle actuating a door lock, a lock cylinder adjacent to the door handle, and a flap articulated to the housing and to cover the lock cylinder while being flush with the handle, and, when the flap is actuated by hand, exposes the lock cylinder; the flap articulated about an axis of rotation extending with respect to the lateral edge of the handle to a distance greater than or equal to 10 mm and the lateral edge of the handle includes a gripping device, capable of receiving a member inserted between the open flap and the lateral edge of the handle enabling the manual actuation of the handle from the flush position to the ejected position.

Abstract: A system may include a lock assembly having secured and unsecured conditions and having an opening for receiving a lock actuating object. An access restriction element may be positionable with respect to the lock assembly to affect access to the opening of the lock assembly. The access restriction element may have at least two conditions, a blocking condition in which the access restriction element at least partially obstructs access to the opening of the lock assembly and an access condition in which the access restriction element is configured to permit access to the opening of the lock assembly. The system may also include an access detection assembly configured to detect attempted access to the opening of the lock assembly by sensing changing of the access restriction element from the blocking condition to the access condition.

Abstract: Described herein are example fluid guards that can be used with locking devices. Various aspects may be particularly applicable to electrical locks, but they may also be applicable to mechanical locks. A locking device guard can include a guard head, a guard body, and a hinge. The guard head may include a fluid absorber, a frame that is shaped to receive the fluid absorber, and a fastening mechanism. The guard body can be coupled with an electronic lock. The guard body can include an aperture that is configured to expose a face of the electronic lock.

Abstract: A vehicle lock assembly key hole cover having a flat or ovoid surface with an annular shoulder extending axially from the surface. The annular shoulder is formed with one of several features including a taper in cross-section, geometrically-shaped slots and elastomeric inserts to impart flexibility to the shoulder. An elastomeric sealing ring may be secured to an inner surface of the shoulder to create a seal and increase adhesion to a lock assembly. An adhesive patch may be used to enhance adhesion to a lock assembly.

Abstract: A weather resistant tumbler lock has an elongated body, and defines a longitudinal axis. The lock is interchangeable with another lock having a corresponding asymmetrical perimeter profile with an opening in a top surface sealed with a cap, the other lock having a different rotatable core and a different configuration of tumblers. A drainway provides a channel for water to flow outwardly from the interior of a shell housing, a rotatable core and a keyway within the core, to a drain below the lock. The drain connects to a channel through a lower edge. The core provides an arcuate gap in a lower quadrant adjacent the interior surface of the shell for fluid communication with the drainway. A method includes identifying a substitute tumbler lock with an impermeable outer wall for replacing another lock having an identical outer perimeter profile and a permeable closed opening on its top surface.

Abstract: A core replaceable hockey lock includes a first end face and a second end face. The first end face includes a first cavity, a second cavity, a third cavity and a fourth cavity. The end face includes a core hole which communicates with the second cavity. A lateral hole is defined radially in the lock and communicates with the first and fourth cavities. A locking member is located in the second cavity and includes a connection portion connected to the transmission portion, and a stop plate which slides in the third cavity when the locking member is rotated. A locking part is located in the fourth cavity. A shackle is located in the lateral hole and includes a neck located corresponding to the fourth cavity and the locking part. The first cavity and the core hole are parallel to each other. The core is replaceable by removing the cover.

Abstract: Described herein are example fluid guards that can be used with locking devices. Various aspects may be particularly applicable to electrical locks, but they may also be applicable to mechanical locks. A locking device guard can include a guard head, a guard body, and a hinge. The guard head may include a fluid absorber, a frame that is shaped to receive the fluid absorber, and a fastening mechanism. The guard body can be coupled with an electronic lock. The guard body can include an aperture that is configured to expose a face of the electronic lock.

Abstract: A lock assembly has a lock and a dust cover. The dust cover has a cover body, a connecting portion and a mounting ring. An annular insertion wall protrudes from a surface of the cover plate. Two opposite ends of the connecting portion are connected to the cover body and the mounting ring respectively. The lock has a lock cylinder. A keyhole is formed in one end of the lock cylinder. The lock cylinder has a door abutting portion and an annular mounting groove. The door abutting portion abuts against a door when the lock is mounted on the door. The mounting ring of the dust cover is rotatably mounted around the annular mounting groove. The annular insertion wall can be mounted in and engages with the keyhole. The rotatable dust cover makes the installation, use, and maintenance of the dust cover more convenient.

Abstract: A locking device which multiple operators can use as a hasp lockout device to restrict access to controlled devices and areas. The locking device enables the operator to prevent unauthorized personnel from accessing the key slot of the locking device. Furthermore, the operator can employ multiple padlocks in a sequential manner so as to establish a sequence of locking or unlocking, improving workplace safety.

Abstract: A keyless puck lock system with wireless communications and power interface. Embodiments of the present disclosure provide a keyless puck lock system enabling a low cost and high security solution that is difficult to tamper with and defeat. In the preferred embodiment of the present invention, the system uses a keyless puck lock assembly that includes a hasp assembly and a keyless lock mechanism that does not require any physical mechanical keys so that it does not have a mechanical cylinder inserted therein to lock or unlock the puck lock. Accordingly, the keyless puck lock system in accordance with one or more embodiments of the present invention do not have a physical keyway which is a security attack point that is included in conventional hockey puck-type locks.

Abstract: The invention relates to a door handle (10) for a vehicle door of a motor vehicle, with a removable cover element (11), in particular for covering a lock cylinder (101), wherein the lock cylinder (101) is provided for unlocking and locking a door lock, and wherein the cover element (11) can be transferred between at least two positions (I, II), specifically a covered position (I), in which in particular the lock cylinder (101) is covered by the cover element (11) so as to be inaccessible from the outside, and an open position (II), in which in particular the cylinder lock (101) is uncovered by the cover element (11), and a tension means (12) for actuating the door lock, wherein the tension means (12) can be mechanically operatively connected with the cover element (11) in the open position (II) of the cover element (11), so as to actuate the door lock by pulling on the cover element (11).

Abstract: A handle unit having a handle element for opening and/or closing a lock provided on a moving part includes a lock cylinder, which is protected by a covering cap, and an attachment element, on which the covering cap is releasably disposed. The covering cap has at least one guide projection on the interior thereof, which bears on a guide surface when in the snap-in position, which is formed on the attachment element and is complementary to the guide projection. The attachment element forcibly guides the movement of the covering cap when the covering cap is released, such that the at least one guide projection moves along the complementary guide surface, away from the attachment element.

Abstract: A padlock, which is capable of remaining functional in even very dusty, watery or otherwise difficult conditions is disclosed. In addition, there would be reason for forming the protection level of the padlock to be selectable and updatable as needed to be even better. A protective cap is provided with a gasket and possibly gasketed latch elements.

Abstract: A vehicle door includes an outer panel and an inner frame defining a cavity, wherein a portion of the outer panel defines a generally downward outer surface. A trim member is attached to the outer surface, wherein the trim member and the outer surface define a cylinder receptacle in communication with the cavity. A keyed cylinder is disposed within the cylinder receptacle, wherein a longitudinal axis of the keyed cylinder is substantially normal to the outer surface, and the keyed cylinder slopes downward toward an outward surface of the trim member. The vehicle door also includes an internal locking mechanism and a key aperture of the keyed cylinder, wherein the internal locking mechanism includes a drain channel that slopes toward the key aperture and the cylinder receptacle, and wherein the drain channel is positioned parallel with the longitudinal axis of the keyed cylinder.

Abstract: A door handle apparatus for a vehicle includes a door handle adapted to be provided at a vehicle exterior of a vehicle door and operated in order to open/close the vehicle door, a sensing electrode provided inside of an upper-outer surface of the door handle, a sensor for detecting a user approaching the sensing electrode on the basis of a variation of an electric capacitance generated by the sensing electrode, controlling device for controlling the vehicle door so as to be locked/unlocked on the basis of information detected by the sensor and water-removing device provided on the upper-outer surface of the door handle in order to remove water retained in the vicinity of the sensing electrode.

Abstract: Protection mechanism of the key hole of the lock of a door (11) consisting of a tough durable shell (1), within which a mechanism that drives a blade (4) to cover the key hole (11) is located, so that the key hole will not be visible to any attacker and will not be exposed to the weather conditions. The hitherto mechanisms let the key hole of the lock exposed.

Abstract: A protective device, particularly for a lock of a door or leaf, comprising a covering element which is associated slidingly with a plate that can be fixed to the door or leaf and can be positioned selectively so as to close an opening for access to the lock which is provided in the plate. Two pins are associated transversely with the plate and are adapted to block temporarily the sliding of the covering element with respect to the plate. The device has at least one cam, freely mounted rotatably within a cavity provided in the plate. At least one first recess and at least one second recess are provided in the lateral surface of the at least one cam, which have, in plan view, a mutually different shape and are adapted respectively to allow and prevent the sliding of the covering element.

Abstract: The invention relates to a handle device (1) for a lock unit of a vehicle, comprising a handle part (10) which is movably mounted relative to a door (11) of the vehicle and which can be displaced between a rest position and an operating position, the handle part (10) being flush with the exterior of the door (11) in the rest position and projecting from the exterior of the door (11) in the operating position. The handle part (10) can be manually actuated to open the door (11) when in the operating position. An actuating unit (12) is used to transfer the handle part (10) at least from the rest position to the operating position. According to the invention, the handle device further comprises a lock cylinder (14) which is arranged in the handle device (1) such that the actuating unit (12) covers the lock cylinder (14) towards the exterior of the door (11) and at least partially releases the lock cylinder (14) when manually actuated.

Abstract: Door handle assembly (1) for a vehicle, including a door handle (2) for actuating a door lock (6), which can be moved by external power from a level rest position to an exposed operative position, and a lock cylinder (3) placed adjacent to the door handle (2) for locking and unlocking the door lock (6). The lock cylinder (3) can be covered by a cover plate (4) which, when actuated by hand, exposes the lock cylinder (3) and allows switch of the door handle (2) from the rest position to the operative position.

Abstract: A security device for a handle of a door or a window for protecting against unauthorized actuation has a cover enclosing in a mounted position the handle. A lock is provided that secures the cover on the handle in the mounted position and releases the cover from the handle for removing the cover from the handle. The cover has at least two locking elements. Counter members are disposed on the handle, a handle fixture, a door, or a window, and are matched and interact with the at least two locking elements. One of the locking elements is a locking bar of the lock.

Abstract: An anti-picking device for a lock includes a casing, a rotating body, a key guiding seat and a linking member. The casing has a compartment. The rotating body is rotatably received in the compartment and has an actuated member adapted to rotate the rotating body relatively to the casing and an insertion hole axially connecting two end faces of the rotating body. The key guiding seat is received in the compartment and has an arc guiding groove and a receiving hole. The arc guiding groove communicates with the receiving hole, and the receiving hole penetrates through the key guiding seat in the axial direction. The linking member is received in the receiving hole of the key guiding seat and has an engaging part at a first end, while a second end of the linking member extends out of the receiving hole.

Abstract: A boat lift drive housing for containing a control box, electric motor and gear head for raising and lowering a boat lift. The housing includes front and rear coaxial openings for access to the gear head. The housing further includes an eyebrow cantilevered over an opening in the housing through which a key switch extends such that the key switch is protected from the sun, rain, snow and ice. The housing further includes a pair of bottom openings, with one bottom housing permitting access to a drive shaft of the electric motor and with the other bottom opening holding a tool for driving the drive shaft of the electric motor. The housing further includes a shape tailored to the control box, electric motor and gear head to minimize extra connections within the housing.

Abstract: A protective device comprising a covering element associated slidingly with a plate which can be fixed to the door or leaf and can be positioned selectively so as to close an opening for access to the lock which is provided in the plate. Two pins associated transversely with the plate block temporarily sliding of the covering element. The pins interact with the arms of a rotor, associated rotatably, within a cavity provided in the plate. Pivots protrude from the rotor and cooperate selectively with at least three cams, freely associated rotatably proximate to a surface of the cavity. The cams have an axis at the vertices of a polygon and interact with a magnet-based combination element adapted to modify the angular position of the cams to allow or prevent the rotation of the rotor and temporary mutual release of the pins and the covering element.

Abstract: A security assembly is configured for attachment to a hole saw having a cap defining a central mounting aperture. The security assembly includes a substantially cylindrical base portion having a central axis. A handle portion is coupled to the cylindrical base portion and defines a tag cavity for housing a security tag. An extension member extends opposite the handle portion from the base portion along the central axis. The extension member engages the central mounting aperture of the hole saw.

Abstract: A burglary prevention device is used with an existing door having an existing door knob lock and includes a door knob cover including a base suitably sized and shaped to fit over the existing door knob lock, a fastener attached to the base and extending outwardly therefrom, and a flexible chain connected to the fastener and engaged with a bottom edge of the existing door. In this manner, the chain is located exterior of the base. Advantageously, the door knob cover is capable of fitting over the existing door knob lock in such a manner that access is prohibited to the existing door knob lock.

Abstract: The invention describes an actuating lever which can be pivoted into a recess, and which, in the pivoted-in position, can be locked in place by means of a key-actuable lock, such as a cylinder lock, wherein the access opening for the key is provided with a cover, secured by means of a pin, wherein according to the invention the cover can be moved along the longitudinal extension of the actuating lever between two end positions, with said cover closing off the access opening in one end position and exposing the access opening in the other end position, and wherein the cover forms an undercut groove, which receives the head of a pin which is secured to the actuating lever.

Abstract: Apparatus and methods for securing a door having one or more door mechanisms via a cover and base. The cover protects the door mechanisms and includes an enclosure fitting over the at least one of the door mechanisms, a first securing member comprising a slot through which a second securing member passes, and a first joint member. A base connects the cover to the door. The base includes one or more second holes extending through which are one or more fastening mechanisms of the door mechanisms protected by the cover, and a second joint member. A releasable joint aligning the cover with respect to the base, is formed by the first joint member of the cover and the second joint member of the base.

Abstract: Described is a quarter-turn latch having a key receptacle and a cover for closing the access to the key receptacle, wherein the cover can be folded around an axis parallel to the fastening plane or door of the quarter-turn latch out of an open position into a closed position, and a contour protrudes in the interior of the covet in the region of the axis, which contour is adapted to the contour of the actuating means in such a way that it fixes the actuating means with respect to rotation in the closed position of the cover and accordingly forms a lock safeguard.

Abstract: An improved locking handle and power module assembly provides continued ability to open and close a truck cap or tonneau cover from within or without, and presents an enclosed mechanism to prevent obstruction or jamming. A release handle is provided to permit unlatching of a latch mechanism operated by the locking handle without regard to whether the locking handle is locked or not.

Abstract: There is provided a security cover for a cylinder lock. The security cover may comprise a top wall and a peripheral side wall and may be adapted to be secured over an end of the lock and may include a key slot extending through the top wall and positioned to align with the lock cylinder when the cover is secured over the lock. There is also provided a key for use with the cover and a method for securing a cylinder lock.

Abstract: Apparatus and methods for securing a door having one or more door mechanisms via a cover and base. The cover protects the door mechanisms and includes an enclosure fitting over the at least one of the door mechanisms, a first securing member comprising a slot through which a second securing member passes, and a first joint member. A base connects the cover to the door. The base includes one or more second holes extending through which are one or more fastening mechanisms of the door mechanisms protected by the cover, and a second joint member. A releasable joint alligning the cover with respect to the base, is formed by the first joint member of the cover and the second joint member of the base.

Abstract: An unlocking device includes a casing mounted to a side of a lock. A movable body is movably received in the casing along a first axis and has an opening. The lock has a keyhole in an extent of the opening. A key receiving seat is movable along a second axis perpendicular to the first axis between a first position received in the movable body and a second position at least partially outside of the movable body. A linking rod is extended into the movable seat. A key can be placed into a key receiving hole of the key receiving seat in the second position and then moved into the movable body to engage with the linking rod when the key receiving seat moves to the first position. The key is movable into the keyhole by moving the linking rod along the first axis and is rotatable for a locking or unlocking operation.

Abstract: A vehicle door handle device, includes a cylinder lock for locking and unlocking a locking mechanism of an opening/closing panel, and a pair of pivot members pivotally attached to the opening/closing panel. One pivot member of the pair of pivot members is formed of a shutter capable of opening and closing a key insert hole of the cylinder lock, and another pivot member of the pair of pivot members has a pivotal force transmitting portion for transmitting a pivotal force in a direction to open the key insert hole to the one pivot member and is formed of an operating handle for opening and closing the opening/closing panel.

Abstract: In a vehicle door outer handle device, an inwardly recessed housing recess is provided in a base member fixed to a vehicle door; an outer handle having an operation portion is pivotably supported on the base member while being able to pivot to an operated position in accordance with pulling of the operation portion and being spring-biased toward a non-operated position side, at least part of the operation portion being disposed in the housing recess; and a cylinder lock is mounted on the base member so that a key hole is covered at least in a state in which the outer handle is in the non-operated position. In the outer handle device, a cover member is detachably mounted on the base member so as to cover the key hole, the cover member being formed as a separate body from the outer handle so as to form part of the housing recess while forming a design surface of the base member.

Abstract: The combination of: a) an apparatus with a frame bounding an internal space and a first door that is movable between closed and open positions; b) cooperating components on the first door and at least one of: i) the frame; and ii) a second door that are alignable in a first relative position; and c) a lock assembly that cooperates with the components with the first door in the closed position and the cooperating components in the first relative position and has a locked state wherein the lock assembly prevents the first door from being moved from its closed position into its open position. The lock assembly has a casing with an outer surface and a first assembly that extends over at least a portion of the outer surface of the casing to block access to the casing in a manner that would allow a repositioning force to be applied to the outer surface of the casing so as to thereby defeat the lock assembly.

Abstract: An unlocking device includes a casing mounted to a side of a lock having a keyhole. A movable body is rotatably received in the casing about an axis. The movable body has a closed end having a through-hole. A key receiving seat is received in the movable body and has a passage. The keyhole is normally blocked by the closed end of the movable body. The movable body can be rotated to align the through-hole with the keyhole and the passage. A manually rotatable linking rod extends through the passage and has an engaging portion for coupling a key received in the passage. The key can be moved into the keyhole by moving the linking rod along the axis and can be rotated for a locking or unlocking operation.

Abstract: A combination including an apparatus with a frame bounding an internal space and a first repositionable door that is movable between closed and open positions relative to the frame. Cooperating components on the first door and at least one of: a) the frame; and b) a second door are alignable in a first relative position with the first door closed. A lock assembly cooperates with the components with the first door in the closed position and the cooperating components in the first relative position and has a locked state wherein the lock assembly prevents the first door from being moved from its closed position into its open position. A shielding assembly conforms to at least a part of the exposed outer surface, overlies at least a part of the exposed outer surface, and is frictionally held against the lock assembly to be maintained in an operative state.

Abstract: A retractable hand lever actuator which can be locked in a trough for driving a latch for a switch cabinet or the like is described. The hand lever is articulated at a drive shaft supported in the trough. According to the invention, the hand lever actuator comprises a handle such as a T-handle or L-handle having two connection levers which are arranged relative to one another in a parallelogram configuration and which are articulated by one end at the drive shaft and by the other end in a similar manner at the handle in such a way that, on the one hand, they hold the handle in its direction parallel to the extension of the trough when the handle is folded out of the trough and, on the other hand, are able to transmit a rotational movement of the handle to the drive shaft in the folded out position.

Abstract: A closure system is provided, in particular for a motor vehicle, having a lock device, which is arranged in or on the outer side of a wall element, in particular of a motor vehicle, and which has an opening, into which an unlocking and/or locking device, which is implemented as corresponding to the opening in particular and is manual in particular, is insertable in an insertion direction, and having a cover device, which can be or is arranged on the lock device, so that it entirely covers the opening of the lock device at least in the insertion direction, and which is at least partially removable from the lock device to expose the opening for the unlocking and/or locking device.

Abstract: A swivel lever can be locked in a trough in a swiveled in position and comprises a locking device which is accommodated in the swivel lever and which can be unlocked by way of an access opening in the swivel lever. The access opening can be made inaccessible by means of a cover. According to the invention, the cover can be blocked mechanically, particularly electromechanically, in its covering position.

Abstract: A vehicle door handle device, includes a cylinder lock for locking and unlocking a locking mechanism of an opening/closing panel, and a pair of pivot members pivotally attached to the opening/closing panel. One pivot member of the pair of pivot members is formed of a shutter capable of opening and closing a key insert hole of the cylinder lock, and another pivot member of the pair of pivot members has a pivotal force transmitting portion for transmitting a pivotal force in a direction to open the key insert hole to the one pivot member and is formed of an operating handle for opening and closing the opening/closing panel.

Abstract: The invention relates to a secured device for locking and unlocking a plug on a frame with a wrench. The device has an obstructing component that is mobile with respect to a plug and can be brought from an obstructing position to an unobstructing position in which the wrench can engage a rotor of a bolt when an identification code of the wrench, read by a reader, is in agreement with the code stored in an electronic module that is associated with the plug.

Abstract: The present invention provides a locking system that is more secure and theft resistant than traditional key and cylinder systems. A hidden locking system is provided where access to the locking mechanism is hidden from view and cannot be rotated or engaged by screwdrivers, pens or other common tools. In another aspect the present a primary and all related secondary locking systems on an object such as a bicycle. In a further aspect the present invention provides lockup in applications where large and bulky key and cylinder systems are not possible or practical.

Abstract: A kind of rotatory emergency stop cover with plug-in unit includes lock cover 11 having shutter 9 that contains raised block b and return spring inside, lock base 15 having groove a, stop button 4 having torsional spring; lock cover has cam 8 and torsional spring, stop button 4 has retainer 3 and plug-in unit that is passing through stop button 4 to go into cam 8 for the connection of stop button 4 to cam 8. Shape and size of unit 1 are adjusted to woke in with that of cam 8 for only use in plug-in unit 1. Plug-in unit is operable to actuate and separate synchronously stop button 4 from cam 8 to ensure that stop button 11 won't open if plug-in unit is not inserted after locking. Support plate 13 has additional hole b, with rectangular hole c being on lock cover 7; it is convenient for user to secure with a lock without removal of unit when lock cover 11 is operated. Stop button 4 has retainer 3, retainer is used to cover hole g to prevent foreign objects from falling into after removal of plug-in unit 1.

Abstract: A push-in emergency stop cover with a plug-in unit includes a retainer, a stop button, a lock cover, a lock base, a combination of a lock and lock spring assembled in the lock cover, a plug-in unit, a slide block, a push button and an associated spring, a slide block and associated spring, a groove provided in said lock cover, said plug-in unit having a key extending through an opening provided in said stop button and to one side of said slide block, the push button having a push rod provided with an inclined plane and a raised block having an inclined plane at the rear of the lock. When the plug-in unit is inserted in the stop button to separate the lock from a lockstitch of the lock base, the lock cover will open; the lock cover will not open when the plug-in unit is removed after the cover is locked. The stop button has a retainer to cover an opening in the stop button to prevent foreign obstacles from falling into the opening.

Abstract: A locking device is adapted for receipt within the main cavity of an underground enclosure. The locking device includes a container having a main body and a container top which define an interior compartment for holding the items of the underground enclosure. The main body is adapted to be assembled in the main cavity of the underground enclosure and is sized to be retained within the underground enclosure. The container top has a selective open position to allow access to the interior compartment of the main body and a selective closed locked position to deter access thereto. An arm assembly coupled to the container top is moveable between an extended engaged position to retain the container top on the container and a collapsed disengaged position to allow release of the container top from the container.

Abstract: A door lock and alarm in the form of a case which is attached to the exterior door handle by a clamping mechanism that stops movement of the case with respect to the door in all degrees of freedom, but allows the handle to turn inside the case. The case is provided with a lockable cover so as to permit an authorized user to open the cover and operate the door handle. An alarm device can be provided within the case to indicate tampering with the door lock.

Abstract: A lock assembly including a housing, a fastener that has a head, a lock member that is movable between a first position and a second position, and a barrier that is movably disposed within the housing. The barrier is displaceable between a first position at which the barrier at least partially covers the fastener head, and a second position at which the fastener head is generally accessible. The barrier is coupled with the lock member such that the barrier displaces from the barrier first and second positions when the lock member displaces between the lock member first and second positions.

Abstract: An unlocking device includes a casing mounted to a side of a lock having a keyhole. A movable body is rotatably received in the casing about an axis. The movable body has a closed end having a hole. A key receiving seat is received in the movable body and has a key receiving hole. The keyhole is normally blocked by the closed end of the movable body. The movable body can be rotated to align the hole with the keyhole and the key receiving hole. A block is fixed to the movable body and includes a through-hole extending along the axis. A manually rotatable linking rod extends through the through-hole and has an engaging portion for coupling a key received in the key receiving hole. The key can be moved into the keyhole by moving the linking rod along the axis and can be rotated for locking or unlocking operation.