A pull-bolt type magnetic lock with spin lock

Abstract

The invention discloses a pulling plug type magnetic lock capable of being locked through automatic spinning. The lock comprises a pull bolt (21), a sleeve (22), a sleeve inner plug (23), a brake ring (24), a rotary piece (25), a plug pin (26) and a plug pin drive assembly (27), wherein the pulling bolt (21) is fixed to one side of the lock, the top end of the pulling bolt (21) is provided with a flange, the sleeve (22) is fixed to the other side of the lock and can be inserted to the pulling bolt, the sleeve inner plug (23) is arranged in the sleeve and can axially move relative to the sleeve, the sleeve (22) is sleeved with the brake ring (24), the rotary piece (25) is arranged between the brake ring and the sleeve and can synchronously rotate with the brake ring, the plug pin (26) extends perpendicular to the axial direction of the brake ring, and one end of the plug pin (26) is matched with the a radial deformed region (24) on the outer wall of the brake ring to lock or release the brake ring. The rotary piece can be driven by the sleeve inner plug to rotate under the action of the downward force of the pulling bolt, and can be driven by the brake ring to rotate back under the action of the upward force of the pulling bolt. The pulling plug type magnetic lock capable of being locked through automatic spinning prevents ineffective locking caused by small electromagnetic force, and can achieve locking and unlocking with very small electromagnetic force; unlocking is achieved with the assist of the mechanical force, the lock structure is simplified, and working is more reliable.

Description

technical field [0001] The invention relates to a pull-bolt type magnetic lock, in particular to a pull-bolt-type magnetic lock for spin locking. Background technique [0002] An existing pull-bolt type magnetic lock such as figure 1 As shown, on one side, a pull bolt 11 is provided on the base plate 103 of the door, and iron plates 104 are placed on both sides of the pull bolt 11. A round hole 121 is set in the wall of the ball bearing cavity 121, and balls are placed in the round hole 121. An axially sliding iron core 14 is arranged on the outer ring of the ball-accommodating cavity 12. The iron core 14 has two stepped holes with different diameters. Wherein, the pull bolt 11 is a cylindrical rod with a ball at one end perpendicular to the protrusion of the door panel, and the diameter of the ball at the end of the pull bolt 11 is larger than the diameter of the cylinder. Magnets 105 are provided on the iron core 14 at positions corresponding to the iron plates 104 . ...

AI Technical Summary

Problems solved by technology

[0004] It can be seen that the existing pull-bolt magnetic locks are all linearly moved between the brake ring (corresponding to the above-mentioned iron core 14) and the sleeve (corresponding to the above-mentioned ball-holding chamber 12) by the action of electromagnetic force, so that the pull bolt cannot be pulled out

In the case of small electromagnetic force, it is easy to cause the failure of the brake ring (iron core 14) to move relative to the sleeve (ball chamber 12), resulting in the failure of the pull-bolt magnetic lock

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