CN2674018Y - Mechanical lock with function of anti-prizing - Google Patents

Abstract

The utility model discloses a mechanical night lock which can not be prized up by a masterkey. The mechanical night lock is characterized in that a key hole seat 10 is constantly and fixedly connected with a lock body 15 without relative rotation; a middle clip 12 is arranged at the side of the key hole, and the middle clip 12 is provided with a hole correspondingly communicated with the hole having a latch 9; an unlocking botton 7 is arranged in the lock body 15. The mechanical night lock can not be prized up by the masterkey even if the lock is prized badly. The mechanical night lock not only can solve the problem that a traditional lock is easy to be prized up, and little complexity of the shape of key and the structure of the key hole seat is added. The mechanical night lock keeps the same advantages of a traditional mechanical lock such as simple structure and low cost, and the mechanical night lock is worth popularizing and applying.

Description

The pick-proof mechanical lock

The utility model relates to mechanical lock, the billiard mechanism of being made up of positive pellet shot from a slingshot (head end is positioned at the pellet shot from a slingshot of keyhole), cloudy pellet shot from a slingshot (head end is not positioned at the pellet shot from a slingshot of keyhole), marble spring and keyhole seat is particularly arranged, also have the cylinder lock of members such as pintle hook lock, pintle hook lock spring and lock body.

So far, though various traditional cylinder lock is simple in structure, cost of production is low, a big shortcoming is arranged all: promptly be easy to be pried open by force by so-called MASTERKRY, theftproof is poor.On structure, the basic reason of being pried open is easily: the unlatching of traditional cylinder lock all depends on the rotation of keyhole seat.This MASTERKRY generally adopts high strength alloy steel to make, and one end cross section is similar to the keyhole shape of cross section of tapered end, and its other end cross section is the shape that hexagon or rectangle etc. can apply high pulling torque with mechanical wrench.Facts have proved in a large number, for various traditional cylinder locks, special corresponding MASTERKRY inserted keyhole after, apply high pulling torque with mechanical wrench, all can destroy billiard mechanism by force and key hole seat is pried open lock.Though, some pick-proof locks have appearred, and the difficulty of just prying open increases, and problem is separated never thorough, and key shape and keyhole holder structure become very complicated, and the cost of production increasing degree is bigger.

The purpose of this utility model is: thoroughly solve the problem that mechanical lock is pried open by MASTERKRY easily, a kind of pick-proof mechanical lock with new construction is provided, should increase with the basic sled of MASTERKRY and not open function, keep advantages such as traditional locks and Key structure simple shape thereof, cost of production be low again.

The utility model structure is provided by following two embodiment.

Fig. 1 is the assembling drawing of first embodiment.This is a kind of cylinder lock that can be used for motorcycle or bicycle.Fig. 2 is the A-A sectional view of Fig. 1, and Fig. 3 is the B-B sectional view of Fig. 2.Be locking states shown in each figure of this paper, ratio is approximately 1: 1.By Fig. 1,2,3 as seen, present embodiment is by the billiard mechanism of being made up of positive pellet shot from a slingshot 9, cloudy pellet shot from a slingshot 11, marble spring 16 and keyhole seat 10, also have pintle hook lock 3, pintle hook lock spring 1 and lock body 15, it is characterized in that: keyhole seat 10 can not relatively rotate with lock body 15 permanent fixedlying connected; Card 12 in the middle of the keyhole side has has and the corresponding hole that communicates, hole, positive pellet shot from a slingshot 9 place on the middle card 12, between centre card 12 and the pintle hook lock 3 push rod 2 is arranged; Lock unblank in addition in the body 15 knob 7 and knob spring 5, card 12 afterbodys in the middle of knob spring 5 is pressed in.The knob 7 of unblanking has two kinds of different situations: the knob 7 of unblanking shown in Figure 1 directly is pressed on the knob spring 5; The knob 7 of unblanking shown in Figure 7 is pressed on the knob spring 5 indirectly by an oblique mechanism 22.

The process of unblanking of first embodiment is as follows: after qualified key 8 is inserted keyhole, press the knob 7 of unblanking with hand and advance, lock is promptly opened.The principle of unblanking: under the effect of marble spring 16, positive pellet shot from a slingshot 9 head ends enter taper hole corresponding on the key 8, the contact surface between each pellet shot from a slingshot all with the external surface copline of middle card 12, so the centre is blocked 12 and can be pushed away by knob spring 5 and move to left; Like this, press the knob 7 of unblanking and advance, just can unblank to left translation knob spring 5, middle card 12, push rod 2 and pintle hook lock 3 successively.It is as follows to shut process: promote locking bar 4 and enter lock body 15 downwards, to left translation, when 4 of locking bars arrived bottom dead centre then and there, pintle hook lock 3 was advanced locking bar 4 grooves by pintle hook lock spring 1 with pintle hook lock 3 on locking bar 4 inclined-planes, and lock cuts out.As seen from the figure, no matter whether key 8 inserts in the lock, promptly no matter in the middle of card 12 whether blocked motionlessly by cloudy pellet shot from a slingshot 11, can realize that all lock cuts out, because middle card 12 can not stop that pintle hook lock 3 moves to left by push rod 2.When key 8 leave lock or insert be defective key the time, middle card 12 is all blocked motionless by cloudy pellet shot from a slingshot 11, no matter much the power of pressing the knob 7 compression knob springs 5 of unblanking is, even if block 12 afterbodys in the middle of can destroying greatly, pintle hook lock 3 is moved to left and opens lock.Obviously, prize firmly, even if permanent the fixedlying connected of keyhole seat 10 and lock body 15 badly relatively rotated by sled with MASTERKRY, also basic with unblank to have nothing to do, middle card 12 all could also keep being blocked by cloudy pellet shot from a slingshot 11 and not move to left, and pintle hook lock 3 does not move to left yet, and lock is still prized not opened!

Figure 5 shows that the assembling drawing of second embodiment, Fig. 4 is the C-C sectional view of Fig. 5, and Fig. 6 is the D-D sectional view of Fig. 4.First and second example structure essence identical point mainly is: all by the billiard mechanism of being made up of positive pellet shot from a slingshot 9, cloudy pellet shot from a slingshot 11, marble spring 16 and keyhole seat 10, also have pintle hook lock 3, pintle hook lock spring 1 and lock body 15; Keyhole seat 10 can not relatively rotate with lock body 15 permanent fixedlying connected; Card 12 in the middle of the keyhole side has has and the corresponding hole that communicates, hole, positive pellet shot from a slingshot 9 place on the middle card 12; Lock unblank in addition in the body 15 knob 7 and knob spring 5.The main difference point is: between card 12 and the pintle hook lock 3 lever 17 is arranged in the middle of second embodiment.Press the knob 7 of unblanking shown in Figure 5 and advance, to promote knob spring 5, cushion block 21 and lever 17 successively, pintle hook lock 3,19 is just prized from locking bar 4, and lock is opened.As seen from Figure 6, pintle hook lock 3,19 is linked to each other by connecting rod 18 and can axially link.When key 8 leave lock or insert be defective key the time, middle card 12 is blocked motionless by cloudy pellet shot from a slingshot 11, even it is very big to press the power of the knob 7 compression knob springs 5 of unblanking, little and resilient lever 17 bendings and be pressed onto the dead point with intensity at the most, card 12 and pintle hook lock 3,19 move and unblank in the middle of can not making.If prize firmly with MASTERKRY, the hexahedron keyhole seat 10 of present embodiment is can be bad and not rotate by sled, and is basic and unblank to have nothing to do.

In sum, the utility model is a kind of mechanical lock of not opening with the basic sled of MASTERKRY.Compare with other pick-proof mechanical lock, the problem of being pried open by MASTERKRY easily for various traditional locks, the utility model not only thoroughly solves, and, the shape of key and the isostructural complexity of keyhole seat increase very little again, kept advantages such as traditional mechanical lock structure is simple, cost of production is low, be worthy of popularization.

Claims (5)

1, a kind of mechanical lock by the billiard mechanism of being made up of positive pellet shot from a slingshot 9, cloudy pellet shot from a slingshot 11, marble spring 16 and keyhole seat 10, also has pintle hook lock 3, pintle hook lock spring 1 and lock body 15, it is characterized in that: keyhole seat 10 can not relatively rotate with lock body 15 permanent fixedlying connected; Card 12 in the middle of the keyhole side has has and the corresponding hole that communicates, hole, positive pellet shot from a slingshot 9 place on the middle card 12; Lock the knob 7 of unblanking in addition in the body 15.

2, the described mechanical lock of root a tree name claim 1 is characterized in that: between middle card 12 and the pintle hook lock 3 push rod 2 is arranged.

3, the described mechanical lock of root a tree name claim 1 is characterized in that: between middle card 12 and the pintle hook lock 3 lever 17 is arranged.

4, the described mechanical lock of root a tree name claim 2 is characterized in that: there is knob spring 5 on knob 7 sides of unblanking, and the knob 7 of unblanking directly is pressed on the knob spring 5.

5, the described mechanical lock of root a tree name claim 2 is characterized in that: there is knob spring 5 on knob 7 sides of unblanking, and the knob 7 of unblanking is pressed on the knob spring 5 indirectly by an oblique mechanism 22.

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