CN2362998Y - Multi-layer lock with stretching-resistant and shock-resistant bolt - Google Patents

Abstract

The utility model relates to a multi-layer lock with a stretching-resistant and shock-resistant bolt, which comprises a lock body 10, a lock beam 20, a bolt 30 and a lock core assembly 40, wherein, the lower part of the front end of the bolt 30 is provided with a force receiving plane 31, the upper part of which is provided with an inclined plane 32. The utility model is characterized in that both sides of the inclined plane 32 are provided with two side walls upwards bulged to the top of the inclined plane 32, and the top planes of both side walls and the plane of the top of the inclined plane form a U-shaped plane 34. The U-shaped plane can effectively eliminate overturning moment, the integral stretching-resistant capability and the shock-resistant capability of the multi-layer lock with stretching-resistant and shock-resistant bolt are enlarged by more than two times, and therefore, the safe performance of the multi-layer lock with stretching-resistant and shock-resistant bolt is enhanced.

Description

Laminated padlock with tension, shock resistance dead bolt

The utility model relates to a kind of lock, specifically relates to a kind of laminated padlock with tension, shock resistance dead bolt.

Laminated padlock (referring to Fig. 1) belongs to a kind of of padlock, the existing history for a long time of its use.Its basic structure such as Fig. 2, shown in Figure 3, it comprises the lock body 10, lock bridge 20, dead bolt 30 and the lock core composite member 40 that are formed by some formation of lots sheet metal stack riveteds.Fig. 2 shows the structure of laminated padlock under locking state, and Fig. 3 then shows its structure under unlocking condition.Fig. 5, Fig. 7 demonstrate traditional laminated padlock dead bolt profile and stressed after distribution situation.Its profile characteristics are its front end is formed wedge-like by a plane of constraint 31 and the inclined-plane 32 that is positioned at its top heads.After lock bridge 20 is subjected to the tensile force f effect, plane 21,22 by two grooves is delivered to pulling force on the plane of constraint 31 of a pair of dead bolt 30, form directed force F, as shown in Figure 2, move up after dead bolt is stressed, stopped by lock body 10 uppermost two sheet metals, form counter-force P (seeing Fig. 5, Fig. 7).Because tensile force f and counter-force P are not in a straight line, and have just formed an overturning moment M.When tensile force f increase to dead bolt after the bending resistance that can not bear, the plane of constraint 31 of dead bolt 30 front ends and inclined-plane 32 just begin to be bent upwards, till fractureing.Dead bolt fractures, and lock just is compelled to open.Owing to there is above-mentioned defective, the tension of traditional laminated padlock dead bolt and impact resistance are all relatively poor.

The purpose of this utility model is to improve the dead bolt structure of existing laminated padlock, and provides a kind of have good tension and shock resistance, laminated padlock safe in utilization.

For achieving the above object, the utility model provides a kind of tension that has, the laminated padlock of shock resistance dead bolt, this laminated padlock comprises a lock body 10 that is formed by some formation of lots sheet metal stack riveteds, be contained in the lock bridge 20 on the lock body, be contained in a pair of dead bolt 30 in the lock body of lock bridge bottom and be loaded on the lock core composite member 40 of dead bolt bottom, a plane of constraint 31 is arranged at above-mentioned dead bolt 30 front end bottoms, an inclined-plane 32 is arranged at plane of constraint top, it is characterized in that 32 both sides, described inclined-plane are provided with two and raise up to the sidewall at top, inclined-plane, two side end face and sloped roof facial planes form a horseshoe clamp face 34.

Dead bolt after the improvement, the horseshoe clamp face bears is the pulling force that transmitted by lock bridge and because the counter-force that the laminated padlock lock body produces, middle recessed chamfered portion then is to bear the shearing force that is transmitted by lock bridge, overturning moment has not existed, thereby overall resistance to tension of laminated padlock after the improvement and impact resistance are increased be twice above, therefore improved the security performance of laminated padlock greatly.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is traditional laminated padlock profile schematic diagram.

Fig. 2 is traditional laminated padlock internal construction schematic diagram under locking state.

Fig. 3 is traditional laminated padlock internal construction schematic diagram under unlocking condition.

Fig. 4 is the utility model internals schematic perspective view.

Fig. 5 is that traditional laminated padlock dead bolt structure reaches at the counter-force distribution situation schematic diagram that is subjected under the tension.

Fig. 6 is that the laminated padlock dead bolt structure after improving reaches at the counter-force distribution situation schematic diagram that is subjected under the tension.

Fig. 7 is that traditional laminated padlock dead bolt overturning moment forms view.

Fig. 8 is the laminated padlock dead bolt overturning moment vanishing state schematic diagram after improving.

Fig. 9 is a resistance to tension test schematic diagram.

Figure 10 is an impact resistance test schematic diagram.

The utility model has kept the basic structure (shown in Fig. 1～4) of former laminated padlock, i.e. lock body 10 that forms by the steel disc of some stamping-out moulding stack riveting, be contained in the lock bridge of making by the hard steel 20 on the lock body, be contained in the dead bolt made of copper 30 in the lock body of lock bridge bottom and be loaded on the dead bolt bottom, comprise the lock core composite member 40 of Cipher mechanism.Find that through the analysis and research that each part to laminated padlock carries out the shape that changes dead bolt 30 can improve its tension and impact resistance and security performance effectively.Therefore main points of the present utility model are the shape of dead bolt is improved, its improvement is the shape of the front end force part of a pair of dead bolt is improved, dead bolt structure such as Fig. 4 after the improvement, shown in Figure 6, the wedge shape inclined-plane 32 of its front center and the plane of constraint 31 of its underpart still keep, but in order to obtain a plane of constraint with pulling force P symmetry, eliminate the existing overturning moment of traditional dead bolt with this, the utility model is provided with two sidewalls in 32 both sides, dead bolt front end inclined-plane, the two side raises up to the top, inclined-plane from the inclined-plane bottom vertical, and two side end face and sloped roof facial planes form a horseshoe clamp face 34.As Fig. 6, shown in Figure 8, after dead bolt is subjected to the tensile force f effect, the counter-force P that the laminated padlock lock body produces is evenly distributed on the horseshoe clamp face 34, counter-force P and tensile force f active force are in a straight line, overturning moment M has not existed, chamfered portion 32 that is recessed in the middle of having only and the plane of constraint of bottom 31 form shearing forces with the plane 21,22 of two grooves of lock bridge 20, and the anti-shear ability of dead bolt is much larger than bending resistance.Show through Fig. 9, tension and impact test shown in Figure 10, the laminated padlock after the improvement, resistance to tension and impact resistance have all increased more than one times than traditional laminated padlock.

The utility model operating principle can illustrate with reference to Fig. 4, uses with establishing the key 50 that password (promptly the spoon tooth is arranged password) conforms to and inserts in the lock cores 41, and lock core just can be with the key turns certain angle.The projection 42 of lock core end is stirred the afterbody 33 of a pair of dead bolt 30, makes the dead bolt retraction.Dead bolt lower end plane of constraint 31 cards are the plane 21,22 of the groove of lock bridge incessantly, and under the effect of lock bridge spring 60, lock bridge 20 ejects lock body 10, and lock has just been opened.

Claims (1)

1, a kind of have a tension, the laminated padlock of shock resistance dead bolt, comprise a lock body (10) that forms by some formation of lots sheet metal stack riveteds, be contained in the lock bridge (20) on the lock body, be contained in a pair of dead bolt (30) in the lock body of lock bridge bottom and be loaded on the lock core composite member (40) of dead bolt bottom, a plane of constraint (31) is arranged at above-mentioned dead bolt (30) front end bottom, an inclined-plane (32) is arranged at plane of constraint top, it is characterized in that both sides, described inclined-plane (32) are provided with two and raise up to the sidewall at top, inclined-plane, two side end face and sloped roof facial planes form a horseshoe clamp face (34).

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