CN2075683U - Cipher lock - Google Patents

Abstract

The utility model relates to a cipher lock which is matched with a common built-in lock in use. The cipher lock can be conveniently unlocked without the need of keys. The cipher lock is characterized in that a spacing ring 5 is arranged in a cavity which is formed by a lock body 2 and a base plate 8. A lifting screw nut 4 is clamped in a slot of the spacing ring 5, and the lifting screw nut 4 is connected with a screw rod 3 of a character carrier through threads. The central position of the cavity is provided with a sleeve 7 and a handle 1 which passes through centre holes of the lock body 2, the sleeve 7 and the base plate 8. The axial displacements of the lock body 2, the sleeve 7 and the base plate 8 are limited by the handle 1 through gaskets 11 and screw nuts 12, the handle 1 is respectively connected with the sleeve 7 and a lock core tab 14 through a key 6 and a pin 13, and the lock body 2 is respectively connected with the base plate 8 and a door through a screw 9, a screw 10 and a connecting plate 15.

Description

Cipher lock

The utility model relates to the trick lock of a kind of and common built-in lock adapted.

Esidential building all is equipped with built-in lock with room and various office occupancy on door, with as shutting conveniently, play certain security and anti-theft effect again.But the people that any meeting opens the lock with the key is as long as the first wife of holder lock or the key of preparation can both be unblanked easily.Though the outer human key of common safety cabinet is difficult for opening, and is the same with all the other door locks, putting into mischief that a little foreign matter causes artificially in the keyhole, that owner is unblanked is also very difficult.China's Patent Gazette for Utility Models disclosed " the mechanical cipher formula is locked a door " (GG87213368), its purpose is that the keyhole to door lock adds a sect, and this unlatching is controlled by a mechanical cipher mechanism, and its weak point is a complex structure, it is loaded down with trivial details to unblank, and uses inconvenience.

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art part just and a kind of and common built-in lock adapted is provided, and replaces its tapered end, without key, opens, locks trick lock easily.

The purpose of this utility model is to realize like this, that is: in the cavity that tapered end and base plate constituted, spacing ring is housed, card has lifting nut in the groove of spacing ring, the lifting nut thread connection has the letter disk screw rod, be provided with a cover and a handle that passes the centre bore of tapered end, cover, base plate and limit its axial displacement by packing ring and nut at the cavity middle position, handle then connects with cover, lock core inserted sheet respectively by key, pin, and tapered end links with base plate and door respectively by screw and junction plate.When coded lock is in when shutting state, the R groove of the plum blossom shape collar of cover external surface middle and upper part just in time is stuck on the excircle of each lifting nut, making with it, the handle of key connecting changes motionless: when unblanking, must stir each letter disk screw rod earlier, thereby drive each lifting nut along on the recess axis of spacing ring, down, during to the cipher code set that needs, the notch center of each lifting nut sidepiece just in time with the same level that is centered close to of the plum blossom shape collar that puts, this moment rotatable handles, the joining lock core inserted sheet that is inserted in the former built-in lock core is rotated, thereby the driving dead bolt reaches the purpose of unblanking.

Concrete structure of the present utility model is provided by the following drawings:

Fig. 1 is the general structure schematic diagram of the utility model trick lock;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is Figure 1A-A sectional drawing.

Below with reference to accompanying drawing concrete structure of the present utility model and working condition are further described.

Referring to accompanying drawing 1-3, a kind of and the common door lock adapted of the utility model, replace its tapered end, without key, open, lock trick lock easily, it is characterized in that in the cavity that tapered end 2 and base plate 8 constituted spacing ring 5 being housed, card has a 3-6 lifting nut 4 in its groove, with lifting nut 4 thread connection the letter disk screw rod 3 of respective numbers is arranged; At the cavity middle position cover 7 is housed, and centre bore that passes tapered end 2, cover 7, base plate 8, and limit the handle 1 of its axial displacements by packing ring 11, nut 12, respectively with cover 7, lock core inserted sheet 14 links, 2 of tapered ends link with base plate 8 and door respectively by screw 9,10 and junction plate 15 handle 1 by key 6, pin 13.Be milled with the twice groove on the excircle of lifting nut 4, corresponding number is carved with on the top of groove, the facing cut relative with groove has a plane, number is the number of unblanking of pairing letter disk screw rod 3, the combination of each number is cipher code set, the purpose that the twice groove is set is: after first cipher code set is given away secrets, lifting nut 4 tunes can be used second cipher code set.Ten numerals of 0-9 are carved with in the upper surface of letter disk screw rod 3, and the side annular knurl is so that stir.Overlapping 7 external surface middle and upper parts is plum blossom shape collar, inner chamber has the twice keyway, and when trick lock did not satisfy the cipher code set of regulation, the R groove that overlaps the plum blossom shape collar of 7 external surface middle and upper parts then was stuck on the excircle of each lifting nut 4, cause the handle 1 of key connecting with it to change motionless, lock does not leave.When satisfying the cipher code set of regulation, under the driving of handle 1, the plum blossom shape collar that overlaps 7 external surface middle and upper parts can be smoothly by the groove on each lifting nut 4, thereby realizes the unlatching of lock.3-6 the hole for 3 grafting of letter disk screw rod arranged, 4 screw holes and a centre bore on the base plate 8.The spacing ring inner chamber has 3-6 road groove.

The utility model compared with prior art has rational in infrastructurely, compact, uses reliable, interchangeability is strong, and the security high both can be to existing single bolt door lock, the repacking of two bolt door locks, drawer-lock also can utilize the lock case structure of above-mentioned various locks, makes novel coded lock.

Claims (6)

1, a kind of and common built-in lock adapted replaces its tapered end, without key, open, lock trick lock easily, it is characterized in that in the cavity that tapered end 2 and base plate 8 are constituted, spacing ring 5 being housed, card has lifting nut 4 in its groove, with lifting nut 4 thread connection letter disk screw rod 3 is arranged; At the cavity middle position cover 7 is housed, and centre bore that passes tapered end 2, cover 7, base plate 8, and link with cover 7, lock core inserted sheet 14 respectively by key 6, pin 13 by handle 1, the handle 1 that packing ring 11, nut 12 limits its axial displacements, 2 of tapered ends link with base plate 8 and door respectively by screw 9,10 and junction plate 15.

2, according to the described trick lock of claim 1, it is characterized in that being milled with two road grooves on lifting nut 4 excircles, number is carved with on the top of groove, and the facing cut relative with groove has a plane.

3,, it is characterized in that ten numerals of 0-9, side annular knurl are carved with in the upper surface of letter disk screw rod 3 according to the described trick lock of claim 1.

4, according to the described trick lock of claim 1, it is characterized in that overlapping 7 external surface middle and upper parts is plum blossom shape collar, and inner chamber has the twice keyway.

5,, it is characterized in that having on the base plate 8 3-6 hole, 4 screw holes and a centre bore for 3 grafting of letter disk screw rod according to the described trick lock of claim 1.

6,, it is characterized in that the spacing ring inner chamber has 3-6 road groove according to the described trick lock of claim 1.

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