CN2137277Y

CN2137277Y - Meshing-type mechanical cipher lock

Info

Publication number: CN2137277Y
Application number: CN 92232311
Authority: CN
Inventors: 袁立平
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-08-29
Filing date: 1992-08-29
Publication date: 1993-06-30
Anticipated expiration: 2002-08-29

Abstract

The utility model relates to a keyless seal mechanical cipher lock, which adopts a dial plate to rotate to dial, and the number of bits of the code is unrecognized apparently. A lock core is a coaxial link gear which is composed of a driving wheel, a ratchet wheel, a cam, and a gear, which has the advantages of automatic reset of wrong numbers, automatic changing numbers after unlocking, anti-picking, etc. Because the probability of breaking the code is 1/160000, the utility model is suitable for the use of doors, vehicles and safe cases.

Description

Meshing-type mechanical cipher lock

The utility model relates to key-free lock, is a kind of mechanical code lock.

Commercially available mechanical code lock all adopts tooth-like structure at present, promptly form one group by several knobs that equate with the password figure place, each knob is represented a numeral, rotation and location by means of each knob, make inner hypodontia (or lobe) be combined into the passage (or obstacle) that can allow dead bolt move, to reach out the purpose of (or closing) lock.Its main weak point is from easily judging the figure place of password in appearance, secondly do not disturb mutually between each numeral of password, promptly back one-bit digital correctness and preceding one-bit digital are irrelevant, the 3rd is need manually upset number after unblanking, the person can not stay the whole numerals or the part numeral of password and cause no close locking next time, and a moving lock is from opening.These weak points all make the decoding probability of password increase greatly, thereby have reduced security performance.For key-type mechanical puzzle lock, also having a defective is can stay obvious marks after repeatedly using on button.

The purpose of this utility model is to overcome the deficiency of prior art and provides a kind of security performance high novel no key mechanical coded lock.

The purpose of this utility model is to realize by lock core being designed to a link gear that is pivoted by dial, ratchet, password cam and being located with spring leaf.

To be further described the utility model by drawings and Examples below:

Accompanying drawing 1 is the utility model and embodiment outline drawing.

Accompanying drawing 2 is the utility model and example structure figure thereof.

Accompanying drawing 3 is the structural representation of password cam 14 in the utility model and the embodiment.

As shown in drawings, the utility model is made up of housing 1 mechanism for locking up 2 lock cores 3.

The non-removable integral body that housing 1 is made up of upper shell 4 and upper shell 5 is made with the metal material that intensity is higher, and its effect is to install and the protection internals.Have centre bore on the upper shell 4 to allow central axis 7 stretch out, centre bore has 10 the uniform scallop holes concentric with centre bore outward, the arc length of each scallop hole is 180, for dial 12 dialing usefulness, be carved with the 0-9 figure disc of totally 10 numerals to fix on upper shell 4 surfaces of scallop hole outer ring equably.

Mechanism for locking up 2 is made up of manual knob 6 central axiss 7 gears 8 dead bolts 9 dead bolt return springs 10 jump rings 11.Manual knob 6 is contained in the top of central axis 7, stretches out upper shell 4, and effect is manually turn clockwise central axis 7 and gear 8, makes dead bolt 9 overcome the pulling force of dead bolt return spring 10, dead bolt 9 is released housing 1(lock).Knob 6 is equipped with spring with central axis 7 cooperation places---the steel ball safeties, knob 6 can be rotated simultaneously with central axis 7 when turning clockwise, powerful again rotation or skid on central axis 7 only then when being rotated counterclockwise after the locking are in case brute force unblanks to destroy member.Gear 8 is standard module spur gears, and the center has a square hole and cooperates with the square shaft head of central axis 7 bottoms, rotates simultaneously with axle, and it is meshed with same modulus tooth bar or gear on the dead bolt 9, with routing motion.Jump ring 11 is rigidity spring leafs preferably, is fixed on the housing 1, and its effect is to block gear 8, only when being withstood by the peak K on the password cam 14, just leaves gear 8, makes gear 8 out of control.

Lock core 3 be by can forming around the dial 12 ratchets 13 password cams 14 of central axis 7 rotation, and has a positioning reed 18.As shown in Figure 2, dial 14 is manual turntables, be installed between manual knob 6 and the upper shell 4, its outer rim has two buttons 16, one group of pin 17 is arranged in the button 16, press the button 16, dial pin 17 and promptly stretch out two downwards and dial under asymmetric and its movement locus when rotating of pins 12 on same circumference with dial 12.Ratchet 13 is complete ratchet-gear wheels of uniform 20 ratchets of outer rim, is made by sheet metal, and is corresponding with 10 scallop holes on the upper shell 4 on the ratchet cover plate, has 20 scallop holes, and its effect is to allow dial that pin 17 passes and ratchet 13 is rotated.Password cam 14 is special-shaped cams, is made by sheet metal, and as shown in Figure 3, its outer rim has the ratchet ABCD that equates with the password figure figure place ... (being four figures shown in the figure), the ratchet on the size of these ratchets and the ratchet 10 is measure-alike.Also hang with a little spring 11 on the password cam 14, the other end of little spring 11 is fixed on the housing 1, and effect is to make password cam 14 keep reset condition, and the upper surface of password cam 14 is equipped with two or several little password projection n ₁, n ₂, these pimples are arranged in two (or several) and dial on corresponding two circumference of pin 17 movement locus these pimples n ₁, n ₂Line up by diverse location and to be password of the present utility model.Password cam 14 has individual peak K, and its effect is after cam goes to certain angle, and K will touch jump ring 11, makes jump ring 11 leave gear 8(and unblanks).Positioning reed 15 is U type metal spring leafs, it is fixed on the housing 1 on one side, another side is designed to the card opposite with the ratchet shape of ratchet 18, promptly block a ratchet on the ratchet 13, ratchet A on the password cam 14 or B, C, D have been blocked again ... and be inserted into the upper surface of gear 8 always, can contact with the block 19 on the gear 8.

The mutual teamwork of the dial 12 on the lock core 3, ratchet 13, password cam 14 and positioning reed 15 is performed such: with the graduation mark on the aligning of the graduation mark on the dial 18 figure disc, press the button 16 and stretch out group pin 17, dial pin 17 and pass scallop hole on the upper shell 4, pass scallop hole straight cutting on ratchet 13 wheel discs again to the upper surface of password cam 14.Rotary dial 12, owing to 18 ° of scallop hole radians on the upper shell 4, group pin 17 drive ratchets 13 are pushed 18 of positioning reeds open and are turned over a ratchet at this moment.If dialing is correct, group pin 17 promptly touches the password projection n on the password cam 14 ₁Or n ₂, drive password cam 14 simultaneously and also turn over a ratchet A or B, C, D ... after this next ratchet on ratchet 13 and the password cam 14 is blocked in positioning reed 15 resiliences once more.Correct dialing is finished, and 14 accumulative total rotations of password cam make the peak K of cam touch jump ring 11, make jump ring 11 leave gear 8, and gear 8 loses constraint, and dead bolt 9 retracts dead bolt 9(and unblanks under the pulling force of dead bolt return spring 16).As long as mistake appears in dialing, group pin 17 just can not touch the password projection n on the password cam 14 ₁Or n ₂Also just can not drive password cam 14 rotates, but this moment, positioning reed 15 was owing to the rotation of ratchet 13 is open, password cam 14 loses the constraint of positioning reed 15 and is returned to reset condition by little spring 18 immediately, even original correct dialing is also all cancelled, the dialing of unblanking needs accent to begin.

Positioning reed 15 still is positioned at password cam 14 on the position of unblanking in order to prevent to unblank afterwards, cause the state of opening (can't lock) of locking promptly, the utility model is inserted to positioning reed 15 upper surface of gear 8 always, and fixed the block 19 of a projection at the upper surface of gear 8, finish when unblanking, gear 8 revolutions stop, this block 19 also forwards positioning reed 15 residing positions simultaneously to, and reed 18 pushed open, make password cam 14 lose the constraint of positioning reed 19 and return to reset condition, this just makes the function that the utlity model has from turmoil number, lock is in case open the lock state for the treatment of that just is in automatically, lock once more because the rotary block 18 of gear 8 leaves positioning reed 19 with gear 8, and positioning reed 15 is started working, this moment is if unblank then must dial again.

Advantage of the present utility model is:

1, dial 12 has only one, from judging this lock cipher figure place in appearance.

Be used alternatingly different button 16 when 2, having two (or several) buttons 16 to be limited to dialing, or several passwords make the permutation and combination of password become how much numerals to increase, the security performance raising with a button 16.

3, in a single day dialing occurs mistake, and former correct dialing is also cancelled, and produces chain reaction and interference between the password figure thereby make, and has also increased the difficulty of decoding.

4, have lock back function, need not manually random number, do not stay the chance of identification to the code breaker from turmoil number.

5, spring---the steel ball safeties have the function of anti-strong destruction internals owing to the design of the cooperation place of manual knob 6 and central axis 7 has.

If 6 are used in the figure place that can increase password on the high objects within confidentiality of security requirements, the number of group number and increase button and password projection makes the password marshalling become how much numerals to increase with secret coefficient.

Embodiment: bicycle coded lock

As shown in drawings, establish two buttons 16 on the dial 12, right button 16 and left button 16 are asymmetric, in case two buttons are pressed simultaneously, and right button 16 decentres are far, and two buttons are coated with respectively with red green two kinds of colors to show difference, right ammonium button 18(redness) n on the control password cam ₁, and n ₁=9.0, left button (green).Control n ₂And n ₂=1.2 press n ₁n ₂The der group cost lock cipher four figures 9102 that progressively is rotated in place.If password cam 14 ratchets 18 are oppositely assembled, become the anti-program of unblanking, can weave into another group password.Dead bolt 9, housing 1 are all made arc like that by the ordinary bicycle lock, and manual knob 6 is turned clockwise, make dead bolt 8 stretch out housing 1, promptly pin bicycle, dial by password 9102 red green two buttons 16 that use in order, correct FD finished dialing, lock is promptly opened automatically.No matter at during dialing is that the red green color sequence of number mistake, numerical order mistake or button uses mistake all can't open lock.And need start anew to dial again.This dial mode is not touched the long-term vestige that uses the rear surface not stay identification of fixed number numeral on the upper shell 4, the correctness that no matter dials, ratchet 10 and positioning reed 15 be corresponding actions all, the sound, feel all is difficult to discover unusually, and this just makes this lock confidentiality strengthen greatly.Housing 1 can be hermetically sealed except that the access of staying dead bolt 9, and this has just strengthened the pick-proof performance of this lock greatly.This lock construction element all is a machinery part in addition, is specially adapted to make in batch, and cost is suitable with the standard machinery bicycle lock.

Claims

1, a kind of mechanical code lock, comprise housing 1 mechanism for locking up 2 lock cores 3, it is characterized in that lock core 3 be one by the link gear that can form around dial 12, ratchet 13, the password cam 14 of central axis 7 rotation, and have one to its retainer spring sheet 15 that positions.

2,, it is characterized in that having two buttons 16 on the said dial 12 at least, and the movement locus of dialling pin 17 that stretch out each button 16 bottom when dial 12 rotations is not on same circumference according to the described lock of claim 1.

3,, it is characterized in that said ratchet 13 rotates with the rotation of dialling pin 17 according to the described lock of claim 1.

4, according to the described lock of claim 1, it is characterized in that said password cam 14 its outer rims have with ratchet 13 on measure-alike ratchet A, B, C, the D of ratchet ..., the quantity of its ratchet equals the figure place of password figure.

5,, it is characterized in that there is password projection D on the surface of said password cam 14 according to the described lock of claim 1 ₁D ₂, have only when dialling pin 17 to touch these password projections D ₁Or D ₂The time, password cam 14 could rotate with the rotation of dialling pin 17.

6, according to the described lock of claim 1, it is characterized in that the metal spring sheet that said positioning reed 15 is U-shapeds, it maintains static on one side, another side both had been stuck on the ratchet of ratchet 13, be stuck in the ratchet A of password cam 14 or B, C, D again ... on, and the surface that always extends to gear 8 can contact with the block 19 of gear 8 upper process.