CN2073457U - Electromagnetic lock - Google Patents

Abstract

The utility model discloses an electromagnetic lock comprising a lock and a locked groove. The utility model is characterized in that the locked groove comprises a housing 1, an electric magnet 2, a movable clamp 3, a swing link 4 and the mouth 5 of a lock bolt, wherein, the electric magnet 2 is fixed on one side of the housing 1, and one end of the C-shaped or the reversed L-shaped moveable clamp 3 is fixed on the housing 1 through pins 8; besides, the moveable clamp 3 is arranged on the side of the electric magnet 2, and the other end of the swing link 4 whose one end is fixed on the housing 1 through pins 7 comes in contact with the other end of the movable clamp 3. The mouth 5 of the lock bolt is fixed on the housing 1 by a shaft 6 and is arranged on the lower part of the swing link 4. The moveable clamp 3 is moved by the attraction of the electric magnet 2 in order to release the swing link 4, the mouth 5 of the lock bolt can freely rotate surrounding the shaft 6, and the original lock bolt in the lock clamped by the mouth 5 of the lock bolt can be separated in order the open the door.

Description

Electromagnetic lock

The utility model relates to a kind of electromagnetic lock.

People use electromagnetic lock to substitute traditional mechanical lock in nearly all electronic security system, and this is not only because electromagnetic lock can be controlled its open and close by electric current, and main is because of electromagnetic lock reliability height, good concealment, and anti-invasive ability is strong.

At present the kind of electromagnetic lock is a lot of, but all these lock common structure and all compare accurate complicatedly, and volume is bigger, manufacturing cost height not only, and often require bigger action current and long function of current time, have in addition still need to switch at closing time.Here the very crucial inner electric control gear of this class lock that a bit is is generally all controlled the rectilinear motion of dead bolt, thereby requires operating distance inevitable very big, more than each defective is also just inevitable takes place thereupon.

Problems such as the electromagnetic lock volume is big in order to solve in the past for the electromagnetic lock that the utility model proposed, complicated in mechanical structure, operating current is big, the function of current time is long design, its inner electric control gear is not to be used to control the dead bolt motion but the rotation of control lock-tongue port, thereby can simplify internal construction greatly, dwindle the volume of lock, reduce action current.

Fig. 1 is the elevation of the electromagnetic lock that the utility model proposes, and Fig. 2 is this lock lock-tongue port, dead bolt and fork part-structure lateral view, and the contrast accompanying drawing describes its structure and operating principle in detail below.

As depicted in figs. 1 and 2, the electromagnetic lock that the utility model proposes comprises lock A and locked groove B two parts, it is characterized in that locked groove B comprises housing 1, electromagnet 2, moving card 3, fork 4 and lock-tongue port 5, wherein electromagnet 2 is fixed on a side of housing 1, an end of moving card 3 that is positioned at the c-shaped or inverted L-shaped of electromagnet 2 sides is positioned on the housing 1 by pin 8, one end is positioned the fork 4 on the housing 1 by pin 7 the other end contacts with the other end of moving card 3, lock-tongue port 5 is positioned at fork 4 bottoms, is positioned on the housing 1 by axle 6.

During locking, moving card 3 blocks fork 4, and lock-tongue port 5 can't rotate, thereby dead bolt 13 is lived door lock, and after energising, electromagnet 2 is inhaled moving card 3, fork 4 promptly is in free state, and lock-tongue port 5 is also rotatable, 14 door can be opened thereby only need to push along the direction of arrow shown in Figure 2.

In order to improve the functional reliability of moving card 3, can between moving card 3 and housing 1, install elastic body 16 additional, make card 3 keep leaving the state of electromagnet 2, door 14 can guarantee that fork 4 passive cards 3 block after the closure once more like this.Also can install elastic body 17 additional between lock-tongue port 5 and housing, making door open back lock-tongue port 5 can set back.This elastic body can be selected things such as spring or flexure strip for use.

Here we find that desire opens door must push 14 in energising, otherwise the moving card 3 of an outage can block fork 4 again, and door still can't be opened.In order to address this problem, can in the middle of lock-tongue port 5, beat through hole, place the fore-set 11 of T font therein, place spring 12 on these fore-set 11 tops, put fore-set spring cap 10 above again, between fork 4 middle parts and housing 1, add shock mount 9, we select the elasticity of spring 12 and spring 9 and placement location like this, make that when dead bolt 13 leaves lock-tongue port 5 central notch promptly during pressurized, the elastic force of spring 12 is not less than the elastic force of spring 9 for fore-set 11; And when dead bolt 13 was arranged in lock-tongue port 5 recesses and oppresses fore-set 11, the elastic force of spring 12 was greater than the elastic force of spring 9.Like this, when door was closing, if an energising (only needing instantaneous energising), moving card 3 discharged fork 4 immediately, is subjected to the pressure of spring 12, and fork 4 moves upward, even outage this moment, moving card 3 can not block fork 4 yet, pushes so at any time and all door can be opened.In case door is opened, dead bolt 13 is no longer oppressed fore-set 11, and the elastic force of spring 12 is less than the elastic force of spring 9, and fork 4 moves downward, and can block by passive card 3, and fore-set 11 pressurizeds can make fork 4 passive cards 3 block tightlyer on the contrary when door was shut again like this.

Very simple by the above-mentioned electromagnetic lock structure that as seen the utility model proposes, and only need instantaneous energising door can be opened, and also need not to switch on once more when locking.Because its electromagnet only need be inhaled moving card, and moving card stressed at ordinary times minimum (the only pressure of spring 12), so only need very little transient current door can be packed.Be contained in locked groove on the doorframe because electricity is control, do not bother, be difficult for hidden defect so do not exist in the past electromagnetic lock to go between.Moreover, because its control locked groove so lock just can be selected common cylinder lock for use, thereby can be realized machinery, automatically controlled dual unblanking, improve flexibility.

Claims (3)

1, a kind of electromagnetic lock that comprises lock and locked groove is characterized in that:

Its locked groove comprises housing 1, electromagnet 2, moving card 3, fork 4 and dead bolt 5, wherein

1.1 electromagnet 2 is fixed on a side of housing 1;

Be positioned on the housing 1 by pin 8 1.2 be positioned at the c-shaped of electromagnet 2 sides or fall an end of L shaped moving card 3;

1.3 being positioned the other end of the fork 4 on the housing 1 by pin 7, an end contacts with the other end of moving card 3;

1.4 the lock-tongue port 5 that is positioned on the housing 1 by axle 6 is positioned at fork 4 bottoms.

2, electromagnetic lock according to claim 1 is characterized in that:

Also has elastic body 16,1 flexible body 17 of lock-tongue port 5 and housing between moving card 3 and the housing 1.

3, electromagnetic lock as claimed in claim 1 or 2 is characterized in that:

Lock-tongue port 5 middle parts also have through hole, wherein are placed with T font fore-set 11, and the spring 12 that top is with fore-set spring cap 10 places on the fore-set 11, and spring 9 is arranged between the middle part of fork 4 and housing.

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