87results about How to "Increase the difficulty of unlocking" patented technology

The invention relates to a lock cylinder anti-theft structure and belongs to the class of machinery. The lock cylinder anti-theft structure comprises a key, a lock body, a lock cylinder and a plurality of lock plates, wherein a plurality of grooves are formed in the key, at least one slot is formed in an inner wall of the lock body, the lock cylinder is contained in the lock body and a plurality of lock plate holes are formed in the periphery of the lock cylinder and the plurality of lock plates are respectively arranged in the lock plate holes in a sliding mode. A hole penetrated through by the key is formed in the lock cylinder, at least one block plate hole corresponding to the slot is formed in the lock cylinder, at least one lock column portion is formed on at least one side of each lock plate, a block plate is arranged on each block plate hole in a sliding mode and a lock column correspondingly clamped with the lock column portion is formed at one side of the block plate. Therefore, when the key is inserted in the lock cylinder, the lock plates are driven to move simultaneously. When the lock column of the block plate is combined with the lock column portion of each lock plate, the block plate is far from the slot of the lock body and therefore a user can obtain a rotary key capable of being forward turned and counter turned at 360 degrees and the practical aim of increasing unlocking difficulty is achieved.

The invention discloses an antitheft key-and-cylinder combination and an application thereof. The antitheft key-and-cylinder combination comprises a key (1) and a cylinder. Bits are distributed on one side of a key body (1.2) along the length. A plug (3) comprises a first plug section (3.1), a second lock body section (3.3) and a third lock body section (3.5) which are arranged at intervals axially; a first connector (3.2) and an elastic connection device which is used for rotational resetting are arranged between the first plug section (3.1) and the second plug section (3.3); a second connector (3.4) and the other elastic connection device which is used for rotational resetting are arranged between the second plug section (3.3) and the third plug section (3.5). Owing to the sectional design of the plug of the antitheft key-and-cylinder combination, it's difficult for people to insert an unlocking tool directly to touch a pin component, technical unlocking difficulty is increased, and antitheft performance is good.

The invention discloses a card lock. The problem that locks good in anti-theft function are not universal in the prior art is solved. The card lock comprises a lock body. The lock body comprises a lock inner container, a lock cylinder, locking pieces and a shifting piece, and the lock cylinder is arranged inside the lock inner container and provided with the shifting piece rotating along with the lock cylinder; the lock cylinder is sleeved with the locking pieces, so that the locking pieces and the lock cylinder rotate jointly; each locking piece is provided with an auxiliary key arm and a main key arm which extend towards the two sides of the locking piece to form lock inner container clamping pieces; a gap is reserved between the main key arm and the auxiliary key arm of each locking piece; the main key arms are elastic, so that the main key arms get close to the corresponding auxiliary key arms under action of external force; the main key arms are connected with key clamping pieces; the lock inner container is internally provided with lock inner container clamping grooves corresponding to the lock inner container clamping pieces in position; the lock cylinder sleeved with the locking pieces is arranged inside the lock inner container; the lock inner container clamping pieces of the main key arms of the locking pieces are clamped into the corresponding lock inner container clamping grooves. By means of the technical scheme, the problems in the prior art can be solved well.

The invention discloses a safety cabinet which cannot be carried away or prized up but can send an alarm. The safety cabinet consists of a cabinet body (1) and a cabinet door (2), wherein the cabinet door (2) is provided with a latch structure for realizing opening and closing with the cabinet body (1) and a coded lock for controlling opening of the latch; a bottom plate (9) of the cabinet body (1) is provided with a ground screw hole (10); a rear box plate (7) of the cabinet body (1) is provided with a wall screw hole (8); and the cabinet body (1) is fixed with the ground and the wall through the ground screw hole (10) and the wall screw hole (8) by using a ground screw (11) and a wall screw (12). The safety cabinet is a real safety cabinet which cannot be carried away, prized up or opened without password.