A locking device having a guard lock for safety doors includes a mechanical actuator which can be fastened on a movable door part and a housing which interacts with the actuator and can be fastened to a door counterpart. The housing includes a receptor to which the actuator can be inserted, and the housing comprises a locking element which is displaceable between an unlocked position, in which the actuator can be released, and a locked position, in which the actuator can be fixed relative to the receptor. The actuator comprises an engagement tongue having an engagement recess for mechanical operative engagement with a head end of a locking element in form of an engagement plunger, the engagement plunger being guided in the housing so as to be longitudinally displaceable in a spring-biased manner in the in a plunger longitudinal direction relative to an inner fixed bearing.

A locking device having a guard lock for safety doors includes a mechanical actuator which can be fastened on a movable door part and a housing which interacts with the actuator and can be fastened to a door counterpart. The housing includes a receptor to which the actuator can be inserted, and the housing comprises a locking element which is displaceable between an unlocked position, in which the actuator can be released, and a locked position, in which the actuator can be fixed relative to the receptor. The actuator comprises an engagement tongue having an engagement recess for mechanical operative engagement with a head end of a locking element in form of an engagement plunger, the engagement plunger being guided in the housing so as to be longitudinally displaceable in a spring-biased manner in the in a plunger longitudinal direction relative to an inner fixed bearing.

A padlock configured to be locked and unlocked by a key includes a key-retaining cover. The padlock includes a lock body having an internal cavity with a locking mechanism received therein. The locking mechanism is a linear lock configured to receive the key through a keyhole to lock and unlock the padlock. A direction of insertion of the key into the locking mechanism is parallel with a direction of displacement of a plurality of tumblers in the locking mechanism thereby creating an outward ejection force on a fully-inserted key. The cover is disposed on the locking mechanism proximate the keyhole. The cover is configured to retain the key in position relative to the locking mechanism against the outward ejection force after the key is received in therein.

A padlock configured to be locked and unlocked by a key includes a key-retaining cover. The padlock includes a lock body having an internal cavity with a locking mechanism received therein. The locking mechanism is a linear lock configured to receive the key through a keyhole to lock and unlock the padlock. A direction of insertion of the key into the locking mechanism is parallel with a direction of displacement of a plurality of tumblers in the locking mechanism thereby creating an outward ejection force on a fully-inserted key. The cover is disposed on the locking mechanism proximate the keyhole. The cover is configured to retain the key in position relative to the locking mechanism against the outward ejection force after the key is received in therein.

The present invention relates to a self-locking pushbutton for unlocking of a lock for a vehicle door, hood, covering or hatch, in particular of an agricultural vehicle, e.g. of a tractor, or of a construction machine.

The present invention relates to a self-locking pushbutton for unlocking of a lock for a vehicle door, hood, covering or hatch, in particular of an agricultural vehicle, e.g. of a tractor, or of a construction machine.

Proposed is a group of inventions relating to locking mechanisms, containing keys which can be separated into parts and which have catches and a plurality of replaceable blades which fit a plurality of locks, the replaceable blades of the keys of all of said locks attach to the catches of one key part having a bow, thus reducing the weight and overall size of a bunch of keys, allowing a person to carry only one key part having a bow and a plurality of key blades pertaining to different locks, reducing the weight and size of a bunch of keys, and a lock having corresponding mating mechanisms, increasing the security of the locking mechanism. The drawing shows the position of two catches on a key shank, using the example of a key to a pin-tumbler mechanism.

Proposed is a group of inventions relating to locking mechanisms, containing keys which can be separated into parts and which have catches and a plurality of replaceable blades which fit a plurality of locks, the replaceable blades of the keys of all of said locks attach to the catches of one key part having a bow, thus reducing the weight and overall size of a bunch of keys, allowing a person to carry only one key part having a bow and a plurality of key blades pertaining to different locks, reducing the weight and size of a bunch of keys, and a lock having corresponding mating mechanisms, increasing the security of the locking mechanism. The drawing shows the position of two catches on a key shank, using the example of a key to a pin-tumbler mechanism.

Proposed is a group of inventions relating to locking mechanisms, containing keys which can be separated into parts and which have catches and a plurality of replaceable blades which fit a plurality of locks, the replaceable blades of the keys of all of said locks attach to the catches of one key part having a bow, thus reducing the weight and overall size of a bunch of keys, allowing a person to carry only one key part having a bow and a plurality of key blades pertaining to different locks, reducing the weight and size of a bunch of keys, and a lock having corresponding mating mechanisms, increasing the security of the locking mechanism. The drawing shows the position of two catches on a key shank, using the example of a key to a pin-tumbler mechanism.

The invention discloses an accidental unlocking prevention electronic lock, in particular an accidental unlocking prevention electronic lock in the field of electronic locks. The accidental unlocking prevention electronic lock of the invention comprises a lock cylinder, a control circuit and a clutch sleeve, wherein the control circuit and a key hole are installed in the lock cylinder, and further comprises a transmission system, a power shaft, a clutch cam, a key cam, a key pin and a suspension, wherein the lock cylinder is internally provided with a clamping jaw, a torsion spring and a clamping jaw motor; one end of the clamping jaw is connected with an output shaft of the clamping jaw motor, one end of the torsion spring is fixed in the suspension and the other end thereof is connected with the clamping jaw; the key cam is provided with a limiting groove and the lock cylinder is provided with a limiting pin. The invention has the advantages of high safety and reliability, low power consumption, small volume and strong impact-resistant performance, and can be protected from accidental unlocking even under the conditions of high-speed impact and severe vibration.