CN201723004U

CN201723004U - Electromagnetic lock core

Info

Publication number: CN201723004U
Application number: CN2010201614722U
Authority: CN
Inventors: 蔡永跃
Original assignee: NINGBO RST AUTOMATIC DOOR TECHNOLOGY Co Ltd
Current assignee: NINGBO RST AUTOMATIC DOOR TECHNOLOGY Co Ltd
Priority date: 2010-04-13
Filing date: 2010-04-13
Publication date: 2011-01-26
Anticipated expiration: 2020-04-13

Abstract

The utility model discloses an electromagnetic lock core comprising a yoke and a coil which is arranged in the yoke; the center of the coil is coaxially provided with a dynamic iron core and a static iron core; the static iron core is fixed on the yoke; the outer end of the dynamic iron core is connected with a bolt assembly of an electromagnetic lock; a part of the dynamic iron core which extends out of the yoke is coaxially sleeved with a reset spring; the electromagnetic lock core is characterized in that a permanent magnet is arranged in the yoke; the permanent magnetic is coaxially sleeved around the dynamic iron core; when the dynamic iron core is suctioned onto the static iron core, the center of the dynamic iron core is arranged below a magnetic field point of the permanent magnet; the pressure for the permanent magnet acts on the dynamic iron core is larger than the elasticity of the reset spring; and the utility model has the advantages that the conversion of two states of the electromagnetic lock core can be realized only by applying the positive and negative current in two extremely short periods of time on the coil, which is totally different from the situation that an ordinary electromagnetic lock does not need to be electrified all the time and the lock can be unlocked upon power-off; the electromagnetic lock core can realize the function of not unlocking upon power-off and effectively reduce power consumption while ensuring the security of a lock door.

Description

A kind of electromagnetic lock lock core

Technical field

The utility model relates to a kind of electromagnetic lock, especially relates to a kind of electromagnetic lock lock core.

Background technology

Electromagnetic lock is widely used on the door and window of various different occasions, moves etc. as electronic.Electromagnetism lock core on the electromagnetic lock then is the core of whole electromagnetic lock.Existing electromagnetism lock core comprises yoke and is arranged on the interior coil of yoke, the center of coil is coaxially arranged with moving iron core and static iron core, static iron core is fixed on the yoke, the outside of moving iron core is connected with the dead bolt assembly of electromagnetic lock, and at the coaxial back-moving spring that is arranged with of the part of stretching out yoke that moves iron core, when coil electricity, the adhesive mutually under the effect in magnetic field of dynamic and static iron core, and when coil blackout, moving iron core then breaks away from static iron core under the effect of back-moving spring.By the axially-movable of moving iron core, drive the dead bolt assembly and make electromagnetic lock be in locking and folding condition respectively.But, from above-mentioned description, as can be seen, make the electromagnetic lock lock core remain on the mutual attracting state of dynamic and static iron core, then must make coil remain on "on" position, like this, will consumed power.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of electromagnetic lock lock core that can reduce power consumption effectively.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of electromagnetic lock lock core, comprise yoke and be arranged on the interior coil of yoke, the center of described coil is coaxially arranged with moving iron core and static iron core, described static iron core is fixed on the described yoke, the outer end of described moving iron core is connected with the dead bolt assembly of electromagnetic lock, at the coaxial back-moving spring that is arranged with of the part of stretching out described yoke of described moving iron core, be provided with permanent magnet in the described yoke, described permanent magnet is coaxial to be set in around the described moving iron core, when described moving iron core is pull-in on the described static iron core, the central point of described moving iron core is positioned at the application point below, magnetic field of described permanent magnet, and described permanent magnet acts on the elastic force of the pressure of described moving iron core greater than described back-moving spring.

When described moving iron core separated the arrival peak with described static iron core, the central point of described moving iron core was positioned at the application point top, magnetic field of described permanent magnet.

Compared with prior art, advantage of the present utility model is to be provided with a coaxial moving iron core permanent magnet on every side that is set in yoke, when moving iron core is pull-in on the static iron core, the central point of moving iron core is positioned at the application point below, magnetic field of permanent magnet, this moment, permanent magnet just produced a downward pressure to moving iron core, and permanent magnet acts on the pressure that the moves iron core elastic force greater than back-moving spring, therefore, behind coil blackout, moving iron core still can remain on attracting state; Otherwise when moving iron core will be decontroled again, only need electromagnetic coil is applied equalization point that opposite effect power up moves iron core to break through permanent magnet and spring composite force just; Therefore, the conversion of the above-mentioned two states (open and close) of this electromagnetic lock lock core only need apply the reversal of two utmost point short time to coil and just can realize, be different from general common electrical magnetic padlock lock core fully needs to switch under the situation of lock always, the situation that outage is then unblanked; Electromagnetic lock lock core of the present utility model can be realized the function of cutting off the power supply and not unblanking, and when guaranteeing the safety of locking a door, can reduce the consumption of electric energy effectively; And when moving iron core separates the arrival peak with static iron core, the central point of moving iron core is set to be positioned at the application point top, magnetic field of permanent magnet, then can guarantee when moving iron core behind relieving state and coil blackout, by back-moving spring and permanent magnet moving iron core is applied double reaction plus and makes iron core still remain on opening.

Description of drawings

Fig. 1 is a profile schematic diagram of the present utility model;

Structural representation when Fig. 2 is in attracting state for the moving iron core of the utility model and static iron core;

Structural representation when Fig. 3 is in released state for the moving iron core of the utility model and static iron core.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

A kind of electromagnetic lock lock core, comprise yoke 1 and the coil 2 that is arranged in the yoke 1, the center of coil 2 is coaxially arranged with moving iron core 3 and static iron core 4, static iron core 4 is fixed on the yoke 1, the outer end of moving iron core 3 is connected with the dead bolt assembly 5 of electromagnetic lock, the coaxial back-moving spring 6 that is arranged with of the part of stretching out yoke 1 at moving iron core 3, be provided with permanent magnet 7 in the yoke 1, permanent magnet 7 coaxial being set in around the moving iron core 3, when moving iron core 3 is pull-in on the static iron core 4, the central point O of moving iron core 3 is positioned at the magnetic field application point G below of permanent magnet 7, permanent magnet 7 acts on the elastic force of the pressure of moving iron core 3 greater than back-moving spring 6, when moving iron core 3 separated the arrival peak with static iron core 4, the central point O of moving iron core 3 was positioned at the magnetic field application point G top of permanent magnet 7.

Claims

1. electromagnetic lock lock core, comprise yoke and be arranged on the interior coil of yoke, the center of described coil is coaxially arranged with moving iron core and static iron core, described static iron core is fixed on the described yoke, the outer end of described moving iron core is connected with the dead bolt assembly of electromagnetic lock, at the coaxial back-moving spring that is arranged with of the part of stretching out described yoke of described moving iron core, it is characterized in that being provided with permanent magnet in the described yoke, described permanent magnet is coaxial to be set in around the described moving iron core, when described moving iron core is pull-in on the described static iron core, the central point of described moving iron core is positioned at the application point below, magnetic field of described permanent magnet, and described permanent magnet acts on the elastic force of the pressure of described moving iron core greater than described back-moving spring.

2. a kind of electromagnetic lock lock core as claimed in claim 1 is characterized in that when described moving iron core separates the arrival peak with described static iron core, and the central point of described moving iron core is positioned at the application point top, magnetic field of described permanent magnet.