CN2435475Y - Anti-picking lock - Google Patents

Abstract

The utility model discloses an anti-prizing lock. A safety lock tongue of the lock is an arc-shaped lock tongue which can be penetrated and hooked in a safety hole and a latch lock tongue is arranged in the arc of the arc-shaped safety lock tongue. The lock has the advantages of good anti-prizing performance, high safety coefficient and simple structure.

Description

Pick-proof lock

The utility model relates to a kind of pick-proof lock.

Various being locked in the daily life often is used, especially on the door pick-proof lock used especially every household all have.Existing pick-proof lock is mostly for having a latch tongue and more than one insurance dead bolt.Because existing insurance dead bolt mostly is column insurance dead bolt, this safety lock can be pushed up back in the lock body after being under pressure, so its safety is relatively poor, the pick-proof performance is low.

The purpose of this utility model is to provide a kind of safety good, the pick-proof lock that difficult quilt is prized.For reaching above-mentioned purpose the utility model pick-proof lock, it comprises latch tongue and insurance dead bolt, and the insurance dead bolt is for wearing the arc dead bolt of hook in the insurance lockhole.The latch tongue is positioned at the arc of arc insurance dead bolt.The end of arc insurance dead bolt is fixed with the brace that is set in the turn-button rotating shaft, is fixed with the convexity that two place's projectioies are arranged that is superimposed upon on the brace in the turn-button rotating shaft and opens sheet, and the high spot of opening sheet is provided with the brace pusher dog that matches with brace.Match with the pusher dog of opening sheet top with the projection on the dial that the key axle links to each other, have the locating slot that can match on the arc insurance dead bolt, have the bar hole that is sleeved on the vertical columns on the spacer with the convex edge of spacer.Be with " people " font steel wire on the column and match, the arc of the lower edge of spacer for matching with the projection of opening sheet with spacer.Be fixed with slide plate on the latch tongue, have the bar hole that is set on the column on the slide plate, rotating plectrum and slide plate flexibly connect, between plectrum and the slide plate back-moving spring is housed, the junction of plectrum and slide plate and plectrum dress back-moving spring place is positioned at the both sides of plectrum rotating shaft, and plectrum is not held and can be insured the volume edge that the brace of dead bolt matches with arc.

After adopting said structure, because the insurance dead bolt of pick-proof lock is a circular arc, the insurance dead bolt is worn hook in two insurance lockholes during use, insures dead bolt like this after locking, is difficult for prying open, so vi have high safety.When opening the door, rotate turn-button and also rotate with the coaxial unlatching sheet of turn-button rotating shaft simultaneously with the turn-button in the door.Owing to open sheet and be the convexity of two place's projectioies, when high spot matched with spacer, with the spacer jack-up that makes progress, the convex edge of spacer was insured by arc in the locating slot of dead bolt.The brace pusher dog of unlatching sheet is stirred the brace on the arc insurance dead bolt, makes in the arc insurance dead bolt withdrawal lock housing.When arc insurance dead bolt was all regained in the lock housing, spacer insured the dead bolt location by downward the matching with another locating slot on the arc insurance dead bolt of the effect of " people " font steel wire with arc, at this moment insures dead bolt and just is opened.If be rotated further turn-button, another projection of opening on the note sheet cooperates with spacer, and the locating slot of the convex edge of spacer and arc insurance dead bolt is thrown off, and the brace on the arc insurance dead bolt rotates and along matching plectrum rotated with the plectrum volume around the plectrum rotating shaft.The plectrum other end matches with the slide plate that is fixed with the latch tongue, because slide plate has the bar hole that is set on the column, slide plate can slide along bar hole under the stirring of plectrum, and the latch tongue is regained in the lock housing.Owing to be fixed with back-moving spring on plectrum and the slide plate, when turn-button did not add external force, slide plate ejected outside the lock housing latch tongue in the action of reset spring lower slider.When pinning arc insurance dead bolt if with turn-button to counter-rotation, open and be fixedly coupled sheet on brace pusher dog and the arc insurance dead bolt on the sheet and act on mutually, make arc insure dead bolt and produce outside the lock body.Finally the convex edge by spacer cooperates with the locating slot of arc insurance dead bolt, and arc is insured the dead bolt locking.Open also have on the sheet pusher dog can with dial that the key axle links to each other on projection match.Key axle and dial are loaded on the locking closure.The key axle can make dial rotate under the effect of key, and the projection on the dial acts on the pusher dog of opening sheet, finishes and opens and locking arc insurance dead bolt and latch tongue.

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

Fig. 1 is the structural representation of the utility model pick-proof lock;

Fig. 2 is the side sectional view of the utility model pick-proof lock.

By Fig. 1 and Fig. 2 as can be known: because the insurance dead bolt 17 of pick-proof lock be a circular arc, insurance dead bolt 17 is worn hook and is insured in the lockholes in two during use, insures dead bolt 17 like this after locking, is difficult for prying open, so vi have high safety.When opening the door, rotate turn-button 26 and also rotate with the coaxial unlatching sheet 6 of turn-button 26 rotating shafts 16 simultaneously with the turn-button in the door 26.Owing to open sheet 6 and be the convexity of two place's projectioies, when high spot matched with spacer 20, with spacer 20 jack-up upwards, the convex edge 19 of spacer 20 was insured by arc in the locating slot 1 of dead bolt 17.The brace pusher dog 25 of unlatching sheet 6 is stirred the brace 5 on the arc insurance dead bolt 17, makes in the arc insurance dead bolt 17 withdrawal lock housings 18.When arc insurance dead bolt 17 is all regained in the lock housing 18, spacer 20 has the bar hole 3 that is set on the column 2, be set with " people " font steel wire 4 on the column 2, spacer 20 insures dead bolt 17 location by downward the matching with another locating slot on the arc insurance dead bolt 17 of the effect of " people " font steel wire 4 with arc, at this moment insures dead bolt 17 and just is opened.If be rotated further turn-button 26, another projection of opening on the sheet 6 cooperates with spacer 20, throw off with the locating slot 1 of arc insurance dead bolt 17 convex edge 19 of spacer 20, and the brace 5 on the arc insurance dead bolt 17 rotates and matches along 11 with plectrum 12 volumes plectrum 12 is rotated around plectrum rotating shaft 13.Plectrum 12 other ends match with the slide plate 7 that is fixed with latch tongue 15, because slide plate 7 has the bar hole 8 that is set on the column 9, slide plate 7 can slide along bar hole 8 under the stirring of plectrum 12, and latch tongue 15 is regained in the lock housing 18.Owing to be fixed with back-moving spring 14 on plectrum 12 and the slide plate 7, when turn-button 26 did not add external force, slide plate 7 ejected outside the lock housings 18 latch tongue 15 in back-moving spring 12 effect lower slider.When pinning arc insurance dead bolt 17 if with turn-button 26 to counter-rotation, open and be fixedly coupled sheet 5 on brace pusher dog 25 and the arc insurance dead bolt 17 on the sheet 6 and act on mutually, make arc insure dead bolt 17 and produce outside the lock body.Finally the convex edge 19 by spacer 20 cooperates with the locating slot 1 of arc insurance dead bolt 17, and arc is insured dead bolt 17 lockings.Open also have on the sheet 6 pusher dog 10 can with dial 23 that key axle 22 links to each other on projection 24 match.Key axle 22 and dial 23 are loaded on the locking closure 21.Key axle 22 can make dial 23 rotate under the effect of key, and the projection 24 on the dial 23 acts on the pusher dog 10 of opening sheet 6, finishes and opens and locking arc insurance dead bolt 17 and latch tongue 15.

Claims (3)

1, pick-proof lock, it comprises latch tongue and insurance dead bolt, it is characterized in that described insurance dead bolt for wearing the arc dead bolt of hook in the insurance lockhole, the latch tongue is positioned at the arc of arc insurance dead bolt.

2, pick-proof lock according to claim 1, the end that it is characterized in that described arc insurance dead bolt is fixed with the brace that is set in the turn-button rotating shaft, be fixed with the convexity that two place's projectioies are arranged that is superimposed upon on the brace in the turn-button rotating shaft and open sheet, the high spot of opening sheet is provided with the brace pusher dog that matches with brace, match with the pusher dog of opening sheet top with the projection on the dial that the key axle links to each other, have the locating slot that can match on the arc insurance dead bolt with the convex edge of spacer, have the bar hole that is sleeved on the vertical columns on the spacer, be with " people " font steel wire on the column and match, the arc of the lower edge of spacer for matching with the projection of opening sheet with spacer.

3, pick-proof lock according to claim 2, it is characterized in that being fixed with slide plate on the described latch tongue, have the bar hole that is set on the column on the slide plate, rotating plectrum and slide plate flexibly connect, between plectrum and the slide plate back-moving spring is housed, the junction of plectrum and slide plate and plectrum dress back-moving spring place is positioned at the both sides of plectrum rotating shaft, and plectrum is not held and can be insured the volume edge that the brace of dead bolt matches with arc.

Images