CN2358205Y - Lock device for anti-theft door - Google Patents

Abstract

The utility model relates to a lock device for an anti-theft door. On the basis of an anti-theft door combination apparatus of the technical proposal X of the patent technology 97208083, a lock rod 6 does not apply force on a push rod 11 directly, and a swing rod 9 contacts a push rod rack 10 so as to reduce direct acting force applied to the push rod 11 by the lock rod 6, which can enhance the safety of a lockset and reduce the production cost. The technical proposal is simple in structure, and can effectively enhance the integral safety level of the anti-theft door after organically matched with the technical proposal X of the patent technology 97208083. The utility model has a great popularization value in safe boxes, building anti-theft doors, and anti-theft windows.

Description

A kind of security door locking device

The utility model relates to a kind of burglary insurance device, particularly a kind of security door locking device.

Along with raising, also more and more higher to the requirement of locking device to the requirement for insurance of economic secret, science and technology, military secret and valuables and marketable securities.The key of locking device is the reliability of security door.Patent No. 97208083.X technology " a kind of security door composite set " provides the new compound mode of a kind of door with doorframe, it has concentrated the push-pull fashion security door and around the advantage of pivot hinge rotating manner security door, eliminated door and be exposed to the outer seam that cooperates, improved insurance function effectively with the doorframe cooperation place.But owing to play the active force that the push rod of locking bolt effect directly is subjected to locking bar in this scheme, thus higher to the requirement of strength of locking bar, the corresponding raising of cost.

The utility model is on the basis of patent 97208082.X technical scheme, provides a kind of and can eliminate locking bar directly withstands doorframe by push rod active force, further improves insurance degree, the security door locking device that reduces production costs.

Its technical solution is to link by one " L " type fork between locking bar and mandril frame.Connected more than one push rod (tightening latch) on mandril frame, when locking bar is in when locking situation, fork has left mandril frame, and mandril frame drops down onto limit base.At this moment, the locating hinge of push rod on it rotates, and enters the doorframe state that withstands, when locking bar is in when unblanking situation, " L " type fork up moves the mandril frame supporting, makes the push rod on the mandril frame leave doorframe after the locating hinge on it clockwise rotates, and is in the unlatching situation.So locking bar does not resemble the 97208083.X patent scheme direct stressed in push rod, the degree of safety of lock is improved, cost of production reduces.

Now in conjunction with the embodiments this programme is described further.

Figure one is when being in the pinning situation in this structural concept, looks schematic diagram from inside to outside and schematic top plan view is analysed and observe by office from security door.

Figure two is in this structural concept when unblanking situation, looks schematic diagram from inside to outside and schematic top plan view is analysed and observe by office from security door.

On doorframe 4, up and down four fixedly connected axle sleeves 2 are arranged, each fixedly connected axle bed 3 is up and down arranged on the shop front 14, doorframe 4 and the shop front 14 connect by stub axle, and stub axle 1 can sliding translation in axle sleeve 2, turns on axle bed 3 and makes an open and close.When lock 5 was in opening, locking bar 6 was toward moving to left contraction, and pulling fork 9 counterclockwise rotates around axle 8, fork 9 is with the up motion of mandril frame 10 tops, push rod 11 is after axle 12 is done the clockwise direction rotation, and doorframe 4 is left on the top of push rod 11, enters in the shop front 14 plate width of cloth (shown in the figure two).At this moment, the shop front 14 can be moved from left to right, make the shop front 14 withdraw from draw-in groove on the doorframe 4 after, rotate and open around axle bed 2.When locking a door, the shop front 14 from right past left translation, is inserted in the draw-in groove of doorframe 4, to lock 5 and be in locked state, locking bar 6 is turned right and is stretched out, and promotes fork 9 and rotates around axle 8 clockwise directions, and fork 9 leaves mandril frame 10, mandril frame 10 is under the deadweight effect, move down, fall limit base 13 location, in this process, push rod 11 counterclockwise rotates around axle 12, withstands doorframe 4 until the top of push rod 11.Because push rod 11 has withstood doorframe 4, decide and the shop front 14 can not be moved to right closed.To make mandril frame 10 drive push rod 11 under the deadweight effect in order preventing from artificially locking device to be inverted and to leave doorframe 4, this programme is provided with an anti-down card 7 on fork 9.

This technical scheme is simple in structure, has avoided locking bar 6 directly to make power in push rod 11, has more effectively reduced cost of production than patent 97208083.X technology, has improved the degree of safety of locking bar, has excellent popularization and be worth on safety cabinet, building door, window.

Claims (1)

1. A kind of security door locking device, be characterized between locking bar (6) and mandril frame (10), linking with a fork (9), on mandril frame (10), be provided with more than one push rod (11) again with hinge-coupled, fixed one on the push rod (11) around axle (12), an anti-down card (7) and around axle (8) has been fixedly connected on fork (9), in order to prevent the unlimited whereabouts of mandril frame (10), at mandril frame 10) the lower end be provided with a limit base, when unlatching of locking (5) or locking, by moving of locking bar (6), drive fork (9), the swing of mandril frame (10) and push rod (11).

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