240results about "Cylinder locks" patented technology

The utility model discloses a length-adjustable double-unlocking lock cylinder, which relates to the field of locksets and comprises an outer shell, inner shells which are arranged at two ends of the outer shell in a sliding manner and can realize position adjustment, lock liners which are arranged in the inner shells and are used for inserting keys, and a dial wheel mechanism which is arranged in the middle of the outer shell, wherein the lock cylinder on one side is in linkage connection with the dial wheel mechanism after a key is inserted, and extension frames which are in linkage connection with each other and used for being matched with the lock cylinder in any length are arranged between the dial wheel mechanism and the lock cylinder. The utility model has the advantages of simple structure and good practicability.

A key plug rotatable within a cylindrical bore of a cylinder lock. An upper relatively narrow part of a key way has a small lateral width no more than 33% of the maximum width of a lower relatively wide part of the keyway and extends obliquely upwards along a first direction pointing away from a second lower side wall of a lower part and being inclined at a relatively small angle α, in the interval 3° to 12°, relative to the vertical mid-plane. The sideways or lateral location of the upper relatively narrow part of the keyway is such that an imaginary downward extension thereof, substantially in a second direction opposite to the first direction down to an outer cylindrical contour of the key plug, will fall onto the outer cylindrical contour at a same second side of the vertical mid-plane and inside the second lower side wall of the keyway.

The utility model discloses a double lock structure which comprises a lock cylinder, a key and a lock shell, a second key plate and a first key plate are formed on the key, unlocking convex teeth are formed at the upper end of the first key plate, and the unlocking convex teeth are used for being inserted into first lock bead holes from inside to outside so as to push first lock beads to the outer ends of the first lock bead holes. An unlocking groove is formed in one side of the second key plate, and an unlocking limiting structure used for limiting the unlocking convex teeth to be inserted into the first lock bead hole is formed in the lock hole; the key is provided with an unlocking position relative to the lock hole, at the unlocking position, the unlocking protruding teeth are inserted into the first lock ball holes, the inner ends of the second lock balls are inserted into the unlocking pits, the outer ends of the second lock balls are flush with the outer wall of the lock container, and the key is connected with the unlocking limiting structure in an attached mode. The double-lock structure is good in anti-theft performance.

The invention relates to a lock cylinder with composite marbles, which comprises a shell, a lock liner is arranged in the shell, a key slot and a plurality of first inner marble slots communicated with the key slot are arranged in the lock liner, and first outer marble slots communicated with the first inner marble slots one by one are arranged in the shell. The main pin tumbler and the auxiliary pin tumbler can be inserted in a relatively movable mode, the main pin tumbler and the auxiliary pin tumbler are provided with a main protrusion and an auxiliary protrusion which can stretch into a first tooth groove and a second tooth groove of a key respectively, and a locking device which can stretch into the first inner pin tumbler groove to push the main pin tumbler and the auxiliary pin tumbler is arranged in the first outer pin tumbler groove. When the key is inserted into the key groove, the main protrusion and the auxiliary protrusion are matched with the first tooth groove and the second tooth groove respectively, and then the main pin tumbler and the auxiliary pin tumbler eject the locking device back into the first outer pin tumbler groove so that the lock cylinder can rotate relative to the shell. The key is simple in structure, and the number of key bits is increased through the main protrusions and the auxiliary protrusions.

A lockset includes a lock cylinder, a lock casing, a first lock member, a second lock member and an anti-theft member. The lock cylinder includes a key hole and a first lock slot. The lock casing includes a second lock slot. The first lock member is accommodated in the first lock slot. The second lock member is accommodated in the second lock slot. The anti-theft member is sandwiched in between the first lock member and the second lock member. When two ends of the anti-theft member are respectively located in the first lock slot and the second lock slot, the lock cylinder and the lock casing are locked. When a contact surface between the anti-theft member and the first lock member or the second lock member is aligned with a rotation interface between the lock cylinder and the lock casing, the lock cylinder and the lock casing are unlocked.

The invention discloses an anti-theft lock head, a key and a lock, and relates to the technical field of locks.The blade of the anti-theft lock head is provided with a working side wall, and in the locking state that the blade resets, protrudes and is clamped into a groove, the working side wall is configured to abut against the corresponding groove wall of the groove so as to prevent a lock cylinder from rotating; according to the anti-theft lock cylinder, due to the fact that the contour missing parts are arranged on the working side walls of only part of the blades, when rotating torque in the unlocking direction is applied to the lock cylinder in the locking state, the working side walls cannot effectively abut against the corresponding groove walls and / or the inner wall of the lock body, and therefore the anti-theft lock cylinder can be locked. Therefore, the blade cannot be hung by the edge of the groove wall after being shifted to the flush position and always rebounds instantly, the hand feeling feedback that a technical opener relies on pushing operation is thoroughly eliminated in the technical opening process, the technical unlocking probability is reduced, and the safety is improved.

A lock cylinder having first and second lock housings and a bridging portion located therebetween. The lock cylinder has a frangible region located between the first and / or second lock housings and the bridging portion wherein the frangible region comprises at least one obliquely angled slot.