Electric lock based on stroke detection

Abstract

The invention discloses an electric lock based on stroke detection. The electric lock comprises a lock shell, and a power mechanism, a sliding block, a transmission mechanism and a displacement detection mechanism are arranged in the lock shell; a lock tongue driving rod is arranged at the front end of the sliding block; the transmission mechanism is connected between the sliding block and the power mechanism; the power mechanism drives the sliding block to slide front and back through the transmission mechanism; the displacement detection mechanism and the sliding block are adjacent to each other; and the displacement detection mechanism is used for detecting displacement of the sliding block and outputting displacement in an electric signal form. According to the electric lock, displacement of the sliding block in the electric lock can be detected, and a control system can acquire the inner linkage state of the electric lock.

Description

technical field [0001] The invention relates to an electric lock device, in particular to an electric lock based on stroke detection. Background technique [0002] The existing electric locks are roughly divided into two types, namely electromagnet or electric motor lock, which use the control system to supply power to the electromagnet or electric motor or reverse power supply, and then drive the lock cylinder to move forward or reverse, and then through the linkage switch The state of feedback control or decontrol. For the electromagnetic lock, if the driving current of the electromagnet is too large, or exceeds the rated current of the control system, it will easily lead to the failure of the electromagnetic lock. At the same time, the thrust of the electromagnet is proportional to the driving current. Under the limited driving current, its The generated thrust may not be able to push the lock cylinder, causing the inside of the lock body to be stuck. It can be seen that...

AI Technical Summary

Problems solved by technology

For the electromagnetic lock, if the driving current of the electromagnet is too large, or exceeds the rated current of the control system, it will easily lead to the failure of the electromagnetic lock. At the same time, the thrust of the electromagnet is proportional to the driving current. Under the limited driving current, its The generated thrust may not be able to push the lock cylinder, causing the inside of the lock body to be stuck. It can be seen that this type of electromagnetic lock has high requirements for driving current. In addition, most of the linkage switches used in electromagnetic locks are micro switches, which only have conduction / open circuit. Two states, unable to fully feedback the state of the electromagnetic lock, the stroke of the lock cylinder, etc., which is not conducive to the system's effective control of the lock body

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