CN2658305Y - Rotation movable type anti-rotational-shear lock - Google Patents

Abstract

The utility model discloses a rotation movable type anti-rotational-shear lock, aims to provide an anti-prize novel type anti-theft lock head, wherein an end cover is connected to the rear end of a lock barrel; the end cover is fixed and mounted inside a shell of the lock head; arc shape convex and concave grooves matching with each other are provided between the jointing part of the end cover and the lock barrel; the lock barrel can rotate freely in relation to the end cover; a yoke shifter passes through the end cover to connect with a lock core; arc shape convex and concave grooves matching with each other are provided between the jointing part of the yoke shifter and the lock core; the lock core can rotate freely along the arc shape groove of the end cover; when an unmatched key is inserted into the lock core hole, the lock core is blocked by a locking element, the lock core and the lock barrel rotate in relation to the end cover at the same time under the action of a torsion force, since the lock core is not on the center line of the lock barrel, a rotational displacement of the lock core relative to the yoke shifter is resulted, and the torsion force applied on the lock can not be transmitted to the yoke shifter any more, thus damage to the lock head owing to illegal and intentioned rotational torsion force.

Description

Rotation movable type force removing anti-rotational tapered end

Technical field

The utility model relates to a kind of tapered end.

Background technology

The social now tapered end product of going up use mainly comprises the tapered end housing, lock core, lock tube and shift fork are formed, lock core could rotate when the locking member between lock core and the lock tube is in ad-hoc location simultaneously, thereby driving the fork running opens lockset, but this tapered end exists the not technical disadvantages of pick-proof, as the computer spoon, the wisdom spoon, various tapered ends such as cross-key, when stealer is used when inserting lock core hole with the similar instrument of key, will block lock core hole easily, as long as use spanner, instruments such as hawkbill are clamped twisting, locking member damage will occur and lost efficacy this moment, thereby make internal lock drive the fork running easily lockset is opened, thereby can't be played antitheft effect.And solve the method for this illegally premeditated turn-knob active force infringement now, mainly be the strong and unyielding intensity that improves manufacturing materials, thereby reach the performance of anti-strong torsional buckling, feasible can't popularizing but the making of the method is had relatively high expectations.

Summary of the invention

In order to overcome the deficiencies in the prior art, the utility model provides a kind of novel anti-theft tapered end of pick-proof.

The technical scheme that its technical problem that solves the utility model adopts is: rotation movable type force removing anti-rotational tapered end, comprise the tapered end housing, the lock tube is installed in the tapered end housing, the lock tube is connected with lock core by locking member, the lock core tail end is connected with fork, it is characterized in that locking tube rear end and is connected with end cap; End cap is fixedly mounted in the tapered end housing, end cap is the circular-arc tongue and groove that cooperatively interacts with lock tube junction, the lock tube can freely rotate relative to end cap, fork passes end cap and is connected with lock core, fork and lock core junction are the circular-arc tongue and groove that cooperatively interacts, lock core can freely rotate along the arc groove position of end cap, the two axial lines of fork and lock core coexists on the straight line, and the center line that departs from the lock tube, form a circle boss on the end face of described end cap and fork, on the end face of lock tube and lock core, the groove that matches with boss is arranged.

The beneficial effects of the utility model are: when the key that matches inserts lock core hole, lock core no longer is subjected to the obstruction of locking member, and in lock tube, freely rotate at lock core under the effect of twisting resistance, and realized synchronous rotation by the circular-arc tongue and groove that cooperatively interacts between lock core and the fork, thereby driven the unlatching of lockset; And after unmatched key inserts lock core hole, lock core is subjected to the obstruction of locking member, and lock core rotates relative to end cap with the lock tube simultaneously under the effect of twisting resistance, and because lock core not on the center line of lock tube, make the relative fork of lock core take place to revolve and move apart the position, and the twisting resistance that acts on the lock core also can't be delivered on the fork, thereby has prevented the infringement that illegal premeditated turn-knob active force produces tapered end.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is that the utility model is the decomposing schematic representation of direction with the lock core;

Fig. 2 is that the utility model is the decomposing schematic representation of direction with the shift fork;

Fig. 3 is the structural representation that the utility model is normally unblanked;

Fig. 4 is the utility model structural representation of illegally unblanking.

The specific embodiment

With reference to Fig. 1, Fig. 2, the utility model rotation movable type force removing anti-rotational tapered end, comprise tapered end housing 1, lock tube 3 is installed in the tapered end housing 1, lock tube 3 sees through locking member and is connected with lock core 2, locking member is shell fragment or the pellet shot from a slingshot that uses now, lock core 2 tail ends are connected with fork 4, lock tube 3 rear ends are connected with end cap 5, end cap 5 is fixedly mounted in the tapered end housing 1, end cap 5 is the circular-arc tongue and groove that cooperatively interacts with lock tube 3 junctions, the purpose of this syndeton is that lock tube 3 can freely be rotated relative to end cap 5 under the location of circular-arc tongue and groove, be connected with lock core 2 and fork 4 passes end cap 5, be all circular-arc tongue and groove syndeton between fork 4 and the lock core 2, lock core 2 can freely rotate along the arc groove position of end cap 5, when lock core 2 rotates in lock tube 3, thereby lock core 2 arc groove by tail end drives shift fork 4 and rotates and open locksets, and the two axial lines of fork 4 and lock core 2 coexists on the straight line, and departs from the center line of lock tube 3; The purpose of this design is when unmatched key inserts lock core hole, and lock core 2 fork 4 relatively revolves and moves apart the position, has prevented from illegally to deliberate the infringement of turn-knob active force to the tapered end generation, thereby has played the function of pick-proof.

Arc groove shape cassette syndeton of the present utility model is to form a circle boss on the end face of end cap 5 and fork 4, on the end face of lock tube 3 and lock core 2 groove that matches with boss is arranged.On actual fabrication, be not limited to use above-mentioned syndeton; as forming a circle groove on the end face of end cap 5 and fork 4; and also can reach technique effect of the present utility model processing the boss that matches with the end face groove of fork 4 on the end face of lock core 2; no matter thereby use which kind of mode; as long as it reaches technique effect of the present utility model with essentially identical means, all should belong to protection domain of the present utility model.

With reference to Fig. 3, Fig. 4, be that the utility model is normally unblanked and improper structural representation of unblanking, when the key that matches inserts lock core hole, lock core 2 no longer is subjected to the obstruction of locking member, and in lock tube 3, freely rotate at lock core 2 under the effect of twisting resistance, and realized synchronous rotation by circular-arc tongue and groove syndeton between lock core 2 and the fork 4, thus driven the unlatching of lockset, see Fig. 3; And after unmatched key inserts lock core hole, lock core 2 is subjected to the obstruction of locking member, and lock core 2 rotates relative to end cap with lock tube 3 simultaneously under the effect of twisting resistance, and because lock core 2 not on the center line of lock tube 3, make lock core 2 relative forks 4 take place to revolve and move apart the position, and the twisting resistance that acts on the lock core 2 also can't be delivered on the fork 4, sees Fig. 4, thereby prevented the infringement that illegal premeditated turn-knob active force produces tapered end

Because this tapered end has the incomparable tamper-resistant function of other tapered end, be a kind of not only safety but also practical novel anti-theft tapered end, thereby be widely used on the lockset of occasions such as household, vehicle.

Claims (2)

1. rotation movable type force removing anti-rotational tapered end, comprise tapered end housing (1), lock tube (3) is installed in the tapered end housing (1), lock tube (3) is connected with lock core (2) by locking member, lock core (2) tail end is connected with fork (4), it is characterized in that lock tube (3) rear end is connected with end cap (5), end cap (5) is fixedly mounted in the tapered end housing (1), end cap (5) is the circular-arc tongue and groove that cooperatively interacts with lock tube (3) junction, lock tube (3) can freely rotate relative to end cap (5), fork (4) passes end cap (5) and is connected with lock core (2), fork (4) is the circular-arc tongue and groove that cooperatively interacts with lock core (2) junction, lock core (2) can freely rotate along the arc groove position of end cap (5), and the two axial lines of fork (4) and lock core (2) coexists on the straight line, and departs from the center line of lock tube (3).

2. rotation movable type force removing anti-rotational tapered end according to claim 1 is characterized in that forming a circle boss on the end face of described end cap (5) and fork (4), on the end face of lock tube (3) and lock core (2) groove that matches with boss is arranged.

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