CN2248753Y - Puzzle lock - Google Patents

Abstract

The utility model relates to a cipher lock which comprises a cipher mechanism, a bolt, a lock shell and a spring. A locking circuit is arranged on the lock shell. Cipher push buttons and concealed clamps are arranged in the cipher mechanism. Only when all cipher push buttons are correctly pressed, an annular clamping body arranged on a miniature motor can go over the concealed clamps to unlock. Otherwise, once one wrong cipher button is pressed, the locking circuit can be switched on to lock. The utility model has the characteristics of favorable locking effect and strong confidential performance.

Description

Coded lock

The utility model relates to a kind of coded lock.

Present public coded lock, kind is a lot, and its common weakness is that password can not change at any time, is penetrated by the people easily, brings sense of insecurity to the user.

The purpose of this utility model just provides the novel cipher lock that a kind of password can change at any time.

The purpose of this utility model can realize by following scheme.

The utility model comprises password office, dead bolt, lock housing, clockwork spring four parts.Password office is provided with dark card and password button, exclusive circuit is housed on the lock housing, the process of unblanking of the present utility model is a process of opening gradually, have only by to whole password buttons, dead bolt could all leave lock tube and open coded lock, otherwise in case push the wrong a button, connect exclusive circuit, dead bolt creeps into the lock tube locking.Dark card of the present utility model can be regulated at any time, thereby changes password, makes it have very strong security performance.

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is the novel sectional view of this reality.

Fig. 2 is a front view of the present utility model.

Fig. 3 is dark card structure schematic diagram.

Fig. 4 is a password press-button structure schematic diagram.

The utility model comprises password office 1, dead bolt 2, lock housing 3, clockwork spring 4, password office 1 is an annular insulator, there is an annular groove 5 centre, and the hard groove 6 vertical with annular groove 5, be provided with perforation 7 on the next door of vertical slot 6,7 li the password button made from conductor material 8 is housed in perforation, password button 8 is bar shaped, its head is equipped with spring 9, can rebound automatically after it is pressed, and all password button 8 usefulness leads link together, dark card 10 is installed in vertical slot 6 the insides, unidirectional compressing tablet 12 that one breach 11 and this breach 11 of gland are arranged in the middle of it, but on lock housing 3 except that the dead bolt 2 that move left and right is housed, exclusive circuit also is housed, this exclusive circuit comprises locking power supply 13, the micromotor 15 of band gear 14 is fixed with clockwork spring 4 and annular snap body 16 in the rotating shaft of micromotor 15, an insulation dop 17 is arranged on the annular snap body 16, one ridge is arranged below it, secretly block 10 and control the rotation of annular snap body 16 by hindering this ridge exactly.The positive pole of locking power supply 13 connects the input of micromotor, and negative pole connects password button 8, and the output of micromotor is connected with the conductor part of annular snap body 16.Be contained in the teeth groove that has the gear 14 with micromotor to match above the dead bolt 2 on the lock housing 3.The principle of unblanking of the present utility model is that the elastic force with clockwork spring 4 is power, drive the rotating shaft antiport of micromotor, thereby dead bolt 2 is moved to the left unblanks, and the rotation of micromotor rotating shaft is subjected to the control of annular snap body 16, have only insulation dop 17 on the annular snap body 16 to cross to be placed in secretly blocking one by one of vertical slot 6 the insides 10 could rotate, the insulation dop 17 on the annular snap body 16 is to make it cross dark card 10 by pressing of password button 8.The utility model process of unblanking is a process that progressively advances, have only when you by opening coded lock to whole password buttons.Locking principle of the present utility model is: when in a single day people push the wrong a password button, that is to say, not to touch insulation dop 17 when the password button is pressed, but the conductor part of contact edge insulator body 16, at this moment exclusive circuit is connected, and micromotor rotates, because dark card 10 is provided with unidirectional compressing tablet 12, insulation dop 17 on the annular snap body 16 can free backward rotation, thereby can not hinder shaft of motor and rotate, thereby makes micromotor drive the dead bolt locking that moves right.It is good to the utlity model has latch effect, the characteristics that security performance is strong.

Claims (2)

1, a kind of coded lock, comprise password office (1), dead bolt (2), lock housing (3), clockwork spring (4), it is characterized in that password office (1) is annular insulator, there are annular groove (5) and the vertical slot (6) vertical with annular groove (5) in the centre, dark card (10) is installed in vertical slot (6) the inside, be provided with perforation (7) on the next door of vertical slot (6), the password button (8) that the head made from conductor material is equipped with spring (9) just is installed in perforation (7) the inside, and there is lead to link to each other, on lock housing, be provided with exclusive circuit, the micromotor (15) that comprises band gear (14), locking power supply (13), be fixed with clockwork spring (4) and annular snap body (16) in the rotating shaft of micromotor (15), on annular snap body (16), be provided with insulation dop (17), the positive pole of locking power supply (13) connects the input of micromotor (15), negative pole connects password button (8), the output of micromotor is connected with the conductor part of annular snap body (16), dead bolt (2) is installed on the lock housing (3) can move left and right, and the teeth groove that matches with gear (14) is arranged above it.

2, coded lock according to claim 1 is characterized in that being provided with unidirectional compressing tablet (12) and breach (11) on dark card (10).

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