Electromagnetic locking device with permanent magnet

Abstract

The invention discloses an electromagnetic locking device with a permanent magnet. The electromagnetic locking device comprises a permanent magnet magnetic circuit module (1), an armature module (3), an execution rod (5) and a rotating shaft II (6), wherein the permanent magnet magnetic circuit module (1) is used for generating electromagnetic attraction; the execution rod (5) is installed on a rotating shaft I (34); the rotating shaft I (34) can slide along the execution rod (5); the rotating shaft II (6) is installed on the armature module (3) through a rotating stand II (7); and the execution rod (5) is installed on the rotating shaft II (6) and can rotate around the rotating shaft II (6). The electromagnetic locking device with the permanent magnet is large in locking force, is less affected by temperature, can meet high-index vibration and impact requirements in a locking state, and is stable in the locking state; the electromagnetic locking device is good in internal magnetic matching, and reliable unlocking can be achieved in the high-temperature and low-temperature environment; and the energy consumption is greatly reduced.

Description

technical field [0001] The invention belongs to an electromagnetic locking device, in particular to an electromagnetic locking device with a permanent magnet. Background technique [0002] Electromagnetic locking devices are currently used in many fields to lock related mechanisms, and most electromagnetic locking devices do not have permanent magnets. The electromagnetic locking device without a permanent magnet generates a magnetic field directly by energizing the coil. When locking, the coil is energized to move the armature and drive the relevant structure to move to the locked state. If it needs to be locked for a long time, it will always be energized; Electricity is not affected by electromagnetic attraction, but by other mechanical counterforces to drive the armature to reset to complete the unlocking. [0003] If the electromagnetic locking device without a permanent magnet needs to lock the mechanism for a long time, it needs to be energized all the time to provid...

AI Technical Summary

Problems solved by technology

[0003] If the electromagnetic locking device without a permanent magnet needs to lock the mechanism for a long time, it needs to be energized all the time to provide the electromagnetic attraction required for locking; unlocking is done by directly powering off. The temperature of this type of electromagnetic locking device rises after being energized for a long time, the electromagnetic attraction is small, and the energy consumption is large; and this type of electromagnetic locking device is greatly affected by temperature, the electromagnetic attraction is small in the high temperature state, and the electromagnetic attraction is large in the low temperature state. It is easy to cause the problem that it cannot be locked at high temperature and cannot be unlocked at low temperature, that is, the locking state is unstable and the unlocking is unreliable.

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