CN111058692B

CN111058692B - Gear serial key mechanical anti-theft lock

Info

Publication number: CN111058692B
Application number: CN202010176602.8A
Authority: CN
Inventors: 吕雪寒
Original assignee: Beihua University
Current assignee: Beihua University
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-11-10
Anticipated expiration: 2040-03-13
Also published as: CN111058692A

Abstract

A mechanical anti-theft lock with a serial key gear relates to the field of mechanical anti-theft locks, wherein a key hole and a handle rotating shaft are on the same vertical line, a key is formed by connecting a plurality of small gears in series, each small gear is a complete gear or an incomplete gear or the number of teeth is zero, and the key drives each rack to run for different distances through a middle gear. After the key is rotated for a circle, the handle drives the cam to firstly push the locking plate to be inserted into the sawteeth of the racks, each rack cannot move any more, the cam then pushes the unlocking insertion plate to be inserted into the rectangular opening of each rack, and the cam can continuously rotate to unlock. The key is incorrect, and the locking plate still blocks each rack earlier and can not remove, nevertheless unblanks the picture peg and can not insert the rectangle opening, prevents the cam rotation, and the tool to lock can not open. If the handle is twisted by a strong force, the handle idles. The locking is completed without a key and the lifting of the handle is reversed. The rack, the intermediate gear and the like have simple structures, can be processed by stamping and have low manufacturing cost, and the lockset has the characteristics of technical opening prevention, damage opening prevention, large key amount, stability, durability and the like.

Description

Gear serial key mechanical anti-theft lock

Technical Field

The invention relates to the field of mechanical anti-theft locks, in particular to a gear serial key mechanical anti-theft lock.

Background

At present, the common mechanical anti-theft locks in the prior art mainly include a pin tumbler lock, a blade lock and a mixed type anti-theft lock of the pin tumbler lock and the blade lock. Wherein, the spring lock is divided into common single-side tooth patterns (commonly called as a straight lock), double-side tooth patterns, cross tooth patterns, single-row or double-row round pits and the like according to different structures; one or two snake-shaped bent grooves are formed in the key corresponding to the blade lock; the key of the mixed type anti-theft lock is provided with a snakelike bent groove and a pit.

The main performances of the mechanical anti-theft lock are represented in the following five aspects: 1. anti-technical opening performance; 2. the anti-damage performance comprises a drilling-proof function and a forced opening tool damage-proof function; 3. the amount of keys actually used; 4. stability; 5. the operation is convenient. Only the anti-theft lock with the five performances is the anti-theft lock in the true sense, so that the requirements of users can be really met, the users are high in pillow and careless and can use the anti-theft lock without worry, and otherwise, potential safety hazards can exist. In fact, none of the existing mechanical anti-theft locks in the market has the performance of the above five aspects at the same time.

The highest level in the 'GA/T73-2015 national standard' of the mechanical anti-theft lock is a 'C-level' lock, and in the aspect of key amount, the pin tumbler lock is not less than 3 ten thousand (theoretical value), and the blade lock is not less than 1 ten thousand. The mutual opening rate is not more than one ten-thousandth; the technology-opening-preventing time, the 'C-level' lock is not less than 10 minutes; the damage-proof time, the "C class" lock is not less than 30 minutes. All indexes of the B-level lock are lower than the standard, and the A-level lock is lower. The technical opening modes for the class A lock, which are well known at present, comprise single-hook unlocking, tinfoil unlocking, bump key unlocking, universal key unlocking and the like, some locks even reach second opening, and the locks are more fragile in the aspect of damage resistance, so that the national requirement is limited in use. The former national standard GA/T73-94 only has a class A anti-theft lock and a class B anti-theft lock, but does not have a class C anti-theft lock, so that the super class B anti-theft lock in the market is self-identified by enterprises before the release of the new national standard, the anti-technical unlocking performance is better, but the problems of 'anti-destruction performance' or 'insufficient key amount' and the like are mostly avoided. For example, the blade lock has a lower key amount, and only the marble needs to be added to form the hybrid anti-theft lock, so that the key amount is increased, the technical opening prevention performance is enhanced, but the stability is reduced, and the damage resistance performance is reduced, because the space of the lock cylinder is limited, and the size of related parts is smaller.

In order to overcome the defects and hidden troubles of the mechanical anti-theft lock, a new locking principle is developed for the 'lock cylinder fixed cross mechanical anti-theft lock' (ZL201410020215. X), the problems are well solved, and the mechanical anti-theft lock is mainly characterized in that: the technology cannot unlock the lock; the lock core is fixed and positioned in the lock body in the door leaf, and is protected by the anti-prying plate and the anti-drilling sheet, so that the anti-prying anti-drilling anti-theft lock has the function of preventing the damage of a forced opening tool and the anti-drilling function which are not possessed by the common anti-theft lock; the key is not rotated, only inserted and pulled, and is unlocked by adopting a pressing handle, and the handle can idle due to overload protection; the lock has no tiny parts, and the performance of the lock is stable and reliable; most of the marbles are steel balls, so the operation is quick and labor-saving.

Along with the technical development, a plurality of patent products taking a lock cylinder fixed type cross mechanical anti-theft lock as a core technology in the later stage comprise a lock cylinder fixed type cross mechanical anti-theft lock matched with a fingerprint lock (ZL 201610990489.0), a cam mechanism of the fingerprint lock (ZL 201611045195.7), a double-insertion type anti-theft door and an externally-hung type locking device (ZL201610129609.8), a rotating ring forced resetting device of the anti-theft lock (ZL201710390280.5), a cam mechanism and a rotating ring forced resetting device of the fingerprint lock (ZL 201710435512.4), a locking handle type automatic resetting and idling device (ZL 201710393215.8), a single clutch cam mechanism of the fingerprint lock (ZL201810363492.9), a downward pressing type assembling tool of a cam mechanism of the anti-theft lock (application number 201910159029.7), a lock cylinder fixed type mechanical anti-theft lock for a safety box (application number 201910349515.5), a lock cylinder fixed type motor driven clutch intelligent anti-theft lock for the safety box (application number 201910349180.7) and the like, the technical expansion of the 'lock cylinder fixed cross mechanical anti-theft lock' is continuously expanded as a matched design, but a certain problem still exists, and mainly in a lock cylinder mechanism serving as a core component, 2 rotating rings are arranged on the periphery of a lock cylinder, 24 pin holes which are in one-to-one correspondence are formed in the lock cylinder and the rotating rings, so that the requirement on machining precision is high, the manufacturing cost is high, and the lock cylinder fixed cross mechanical anti-theft lock is suitable for being used in occasions with strict anti-theft performance requirements.

Disclosure of Invention

In order to overcome the disadvantages of the mechanical anti-theft lock in the prior art, the invention provides a gear serial key mechanical anti-theft lock, which mainly adopts a brand new control mechanism to replace the lock core mechanism of the patent, wherein a key hole and the center of a handle rotating shaft are on the same vertical line, a key is formed by connecting a plurality of pinions with the same parameters in series, but a certain pinion is an integral gear or an incomplete gear or has zero teeth, and the arrangement sequence of the pinions with different teeth is randomly arranged, so that different keys are formed, each pinion is respectively meshed with an intermediate gear, each intermediate gear is respectively meshed with a rack, the key rotates for one circle, the distance of each rack in different multiples of the running tooth pitch, in the process of pressing down a handle to unlock, a cam firstly pushes a clamping strip of a locking plate to be inserted into the sawtooth of the rack, so that each rack can not move any more, and then pushes an unlocking plugboard to run, if the key is correct, the rectangular openings of the racks can be transversely and linearly arranged, the cuttings of the unlocking plugboard can be inserted into the rectangular openings, and the cam can continuously rotate to unlock the lockset; if the key is incorrect, the cam still can push the clamping strip of the locking plate to be inserted into the sawteeth of the racks, each rack cannot move any more, but the rectangular openings of the racks cannot be arranged in a straight line, the inserting strip cannot be inserted into the rectangular openings, the cam cannot continue to rotate, and the lockset cannot be unlocked. If the handle is twisted by a strong force, the handle idles. As the core components of the lock control mechanism, the intermediate gear, the rack and the like are processed and manufactured in a stamping mode, the production cost can be greatly reduced, the assembly is simple and easy to implement, and meanwhile, the lock can be ensured to have the performance characteristics of technical opening prevention, destructive opening prevention, large key amount, stability, durability and the like.

The invention adopts the following technical scheme:

a gear serial key mechanical anti-theft lock comprises an outer side plate, a partition plate, an inner side plate and a surrounding plate, wherein a rectangular cavity between the outer side plate and the partition plate is an outer cavity, a rectangular cavity between the partition plate and the inner side plate is an inner cavity, the side of the outer side plate positioned outside the lock body is the outer side of the lock body, the side of the inner side plate positioned outside the lock body is the inner side of the lock body, an unlocking control mechanism is assembled in the outer cavity and comprises a cam mechanism, the cam mechanism is assembled by a cam, a rotating disc, a collision ball spring, an inner connecting shaft and an outer connecting shaft, two adjacent arc-shaped grooves are arranged on the cam along the circumferential direction, one end face of each arc-shaped groove is a first flange and one end face of each arc-shaped groove is a second flange, the two flanges are staggered by a certain angle, a reinforcing plate is arranged on the, the outer side of the lock body is contacted with the reinforcing plate, the square body of the outer side end of the outer connecting shaft is positioned outside the outer side of the lock body, penetrates through the reinforcing plate and the outer panel of the door leaf and is movably assembled and synchronously rotated with the handle rotating shaft, the square body of the inner side end of the outer connecting shaft is assembled and synchronously rotated with the turntable, the turntable is assembled and synchronously rotated with the inner circular surface of the cam through the collision bead and the collision bead spring, when the resistance force borne by the cam does not exceed the limit value, the turntable can drive the cam to synchronously rotate, when the cam cannot rotate, the turntable can idle against the thrust force of the collision bead spring, the square hole in the inner side of the cam is assembled and synchronously rotated with the square shaft of the outer side end of the inner connecting shaft, the inner side end of the inner connecting shaft is provided with a flat shaft and a round shaft, wherein the round shaft is positioned at the end, penetrates through the partition plate and is positioned in the inner cavity, the inner side surfaces, The lock comprises a swing rod, an indoor driving disk, a main lock bolt pulling plate, a rear pushing pin, a front pushing pin, a right-angle rotating plate, a lock bolt driving shaft, a lock bolt main driving disk and the outer side part of the indoor driving shaft, wherein an unlocking executing mechanism assembled on the inner side surface of a lock body comprises a main lock bolt, an indoor driving plate, a lock bolt auxiliary driving disk, a lock bolt connecting plate, a lock bolt and the inner side part of the indoor driving shaft, wherein a flat shaft of an inner connecting shaft is assembled with the outdoor driving disk and synchronously rotates, a round shaft at the end head of the inner connecting shaft is movably assembled with the swing rod, an unlocking push handle and an locking push handle on the outdoor driving disk are respectively positioned on the two sides of the swing rod and are used for pushing the swing rod to swing in the positive and negative directions, the flat shaft at the end head of the outer side of the indoor driving shaft is assembled, an indoor driving shaft penetrates through an inner side plate inwards and then is assembled with an indoor driving sheet and synchronously rotates, an inner end of the indoor driving shaft is movably assembled with an indoor handle or a knob and synchronously rotates, an outer end of the lock bolt driving shaft is assembled with a lock bolt main driving disc and synchronously rotates, an inner end of the lock bolt driving shaft penetrates through the inner side plate and then is assembled with a lock bolt auxiliary driving disc and synchronously rotates, when the handle is pressed down, namely the handle rotates forwards, the handle drives an outer connecting shaft to rotate, the outer connecting shaft drives a rotating disc to rotate, the rotating disc drives a cam to rotate, the cam drives an inner connecting shaft to rotate and further drives an outdoor driving disc to rotate, an unlocking push handle on the outdoor driving disc pushes a swing rod to swing forwards, an end of the swing rod pushes a main lock bolt pulling plate to move rightwards, a rear push pin on the main lock bolt pulling plate pulls the main lock bolt pulling plate to move rightwards, a front, in the later stage of the rotation of the outdoor driving disk, the protruding end on the outdoor driving disk pushes the lock tongue main driving disk to rotate so as to drive the lock tongue driving shaft to rotate, the lock tongue auxiliary driving disk follows the rotation, the lock tongue auxiliary driving disk then pulls the lock tongue connecting plate and the lock tongue to move rightwards so as to complete outdoor unlocking, when the indoor handle or knob rotates forwards, the indoor driving shaft is driven to rotate forwards so as to drive the indoor driving disk to rotate forwards, the unlocking push handle on the indoor driving disk pushes the swing rod to swing forwards, the swing rod then pushes the main lock bolt pull plate to move rightwards so as to complete unlocking movement of the main lock bolt and the ground post, in the later stage of the forward rotation of the indoor driving shaft, the lock tongue auxiliary driving disk is pushed to rotate through the indoor driving sheet so as to pull the lock tongue to move rightwards so as to unlock the, the pendulum rod promotes the main set bar arm-tie and removes left and accomplish and lock again, and when indoor locking, indoor handle or knob drive indoor driving-disc antiport through indoor drive shaft, and the last locking push handle that locks of indoor driving-disc promotes the pendulum rod antiport and accomplishes and lock characterized by: the unlocking control mechanism assembled in the outer cavity of the lock body also comprises a key driving mechanism and a blocking mechanism, the key driving mechanism comprises 1 round pipe, a through hole of the round pipe is a key hole and is used for inserting a key, the key hole is positioned under the center of the cam mechanism, the outer side end of the round pipe is in a step shaft shape, the step shaft is assembled with the through hole of the outer side plate of the lock body and extends out of the outer side surface of the lock body, the step shaft penetrates through the reinforcing plate and the outer panel of the door leaf, the outer end surface of the step shaft is flush with the outer surface of the outer panel of the door leaf, the inner side end of the round pipe is fixedly assembled with the partition plate, the upper part of the round pipe positioned in the outer cavity is provided with 1 rectangular long hole, a gear shaft is arranged right above the round pipe, a plurality of same intermediate gears are movably assembled on the gear shaft and are equidistant, the lower parts of the intermediate, 1 thin gasket of movable assembly between each intermediate gear, 1 thick gasket of each movable assembly between the intermediate gear of outside board and outside and between baffle and the intermediate gear of most inboard, the top of each intermediate gear is equipped with 1 rack the same with intermediate gear thickness respectively, and all racks divide into rack A, rack B two kinds of types according to the structural shape altogether, and each rack is from outside to inside assembly order: assembling 1 rack B, then assembling 1 rack A, then assembling 1 rack B, and so on, namely, the racks A and B are mutually spaced, the lower side of the middle part of each rack is provided with a plurality of teeth in the shape of straight racks and meshed with the corresponding middle gear, the upper side of the middle part of each rack is provided with a plurality of sawteeth, the shape of the sawteeth is isosceles triangle, the space of the sawteeth is the same as the tooth pitch of the lower part, the random position of the upper part of the left side of each rack is provided with 1 rectangular opening with the same size, the left side and the right side of the outer cavity are respectively assembled with 1 sliding shaft A and 1 sliding shaft B, the left side and the right side of each rack are respectively provided with 1 long round hole and movably assembled with the sliding shaft A and the sliding shaft B, namely, the racks A and the racks B can horizontally reciprocate for a certain distance, and 1 thin cushion ring is movably assembled between the racks on the sliding shaft A and the sliding shaft B, 1 thick gasket is movably assembled between the outer side plate and the outermost side rack and between the partition plate and the innermost side rack, 1 spring connecting column is respectively arranged on the left side and the right side of the lower part of the outer cavity, a downward protruding lug is arranged on the lower part of the left side of the rack A, a downward protruding lug is also arranged on the lower part of the right side of the rack B, a through hole is arranged on each lug and is respectively connected with the left end of a rack tension spring, the right end of each rack tension spring is respectively connected with the corresponding spring connecting column, a key is formed by connecting a plurality of pinions with the same parameters in series, the gear teeth of each pinion are aligned one by one along the axial direction, the space between each pinion is the same as that between a middle gear and a rack, but a certain pinion is a complete gear or an incomplete gear or has zero number of teeth, the arrangement sequence of the pinions is randomly arranged and corresponds to the position of, thereby forming different keys, simultaneously, no matter how many teeth are on each incomplete gear, the toothed part or the toothless part is continuous, and the position right above the axial direction of the key is taken as a starting point, the toothed part or the toothless part is from toothed to toothless part according to the clockwise direction, after the key is rotated clockwise for one circle correctly, the running distance of each rack is equal to the product of the tooth number and the tooth pitch of a pinion on the corresponding key, at the moment, each rectangular opening on each rack is transversely arranged in a straight line, a blocking mechanism is positioned between each rack and a cam, wherein, the blocking mechanism comprises 1 locking plate and 1 unlocking plug board, the right side of an outer cavity is also provided with 1 rotating shaft, the right ends of the locking plate and the unlocking plug board are movably assembled with the rotating shaft at the same time, the length of the unlocking plug board is larger than that of the locking plate, the unlocking plug board is positioned on the locking plate, the left end of the, the upper part of the left end of the lock plate is provided with 1 triangular or circular arc-shaped lock plate bulge, the left end of the unlocking insertion plate is vertically downwards provided with a rectangular insertion strip, the upper part of the left side of the unlocking insertion plate is also provided with 1 triangular or circular arc-shaped insertion plate bulge, the unlocking insertion plate on the inner side of the insertion plate bulge is provided with 1 long round hole-shaped avoidance hole, the lock plate bulge upwards penetrates through the avoidance hole and is flush with the height of the insertion plate bulge, and is positioned in a circular arc-shaped groove under the cam, the lock plate bulge is aligned with the first flange, the insertion plate bulge is aligned with the second flange, the left end of the unlocking insertion plate is also provided with a spring connecting hole and is movably connected with the lower end of an insertion plate tension spring, the upper end of the insertion plate tension spring is connected with the lock body, the right side of the unlocking insertion plate is also provided with 1 through hole, the corresponding position of the lock plate under the through hole is also provided with a spring connecting, the upper end of the tension spring of the locking plate is connected with the lock body, in a static state, in a direction perpendicular to the lock body from outside to inside, each tooth of a straight rack part on each rack and each gear tooth of the intermediate gear are respectively aligned and linearly arranged one by one, the tooth crest centers of a row of gear teeth right below the intermediate gear and the center of a key hole are on the same vertical line and are aligned with a row of tooth roots right above the key shaft, all saw teeth on each rack are also aligned and linearly arranged one by one, and the tooth roots of one row of saw teeth and the clamping strips of the locking plate are on the same vertical line, when a correct key is inserted for unlocking, the key is rotated clockwise for one circle, each rack respectively moves from right to left by corresponding distances, then the handle is pressed downwards, the cam rotates clockwise, the first flange of the cam is firstly in convex contact with the locking plate and pushes the locking plate to swing anticlockwise, and the clamping strips of the locking plate are, each rack can not move horizontally any more, then the second flange of the cam starts to contact with the plug board protrusion and push the unlocking plug board to swing anticlockwise, and the cutting slips of the unlocking plug board are inserted into the rectangular openings of the racks which are arranged in a straight line, the cam can continue to rotate and drive the unlocking execution mechanisms such as an outdoor driving disk and the like to operate so as to complete unlocking, then the handle and the cam mechanism are reset, the unlocking plug board and the locking board are reset successively under the pulling of the plug board tension spring and the locking board tension spring respectively, each rack is reset rightwards under the action of the rack tension spring, the key rotates reversely for a circle, then the key is drawn out, if the key is incorrect, the cam still can push the cutting slips of the locking board to be inserted into the sawteeth of each rack, each rack can not move any more, but the rectangular openings of each rack can not be arranged in a straight line, the cutting slips can not be inserted, the lockset can not be unlocked, a key is not needed during locking, the handle is rotated reversely, the cam mechanism rotates reversely and drives the unlocking actuating mechanism to operate reversely to lock, the protrusion of the locking plate and the protrusion of the inserting plate in the process only contact with the bottom of the arc-shaped groove of the cam in a sliding mode, and the rotation of the cam is not influenced.

As mentioned above, the mechanical anti-theft lock with a serial key is a mechanical anti-theft lock with a serial key composed of a plurality of small gears. The number of teeth of the pinions, although different, must be identical, i.e. the module, pitch diameter, addendum diameter, dedendum diameter, pitch, pressure angle, etc. are identical.

The purpose of setting the intermediate gear is that when the incomplete gear manufactured according to the normal standard of the gear is directly meshed with the rack, the tooth top interference is easily generated or the phenomenon of blocking is easily generated, the incomplete gear is meshed with the intermediate gear to avoid the interference, the running distance of the corresponding rack is ensured to be accurate, and meanwhile, the key amount is also required to be increased. The reason is that: only when the arc length of the toothless part of the incomplete gear exceeds a certain numerical value and the tooth top center closest to the incomplete gear on the rack is staggered by a certain distance relative to the center of the incomplete gear at the moment of meshing, can the tooth top interference be avoided, but a new problem can be brought. For example, if the full gear is 6 teeth, the key rotates one revolution, and the incomplete gear of 5 teeth pushes the rack to travel a distance greater than 5 times the pitch because it cannot idle by an angle of 1 tooth. The same applies to 4 teeth and 4 teeth or less. Meanwhile, since the diameter of the key cannot be too thick, that is, the number of teeth of the pinion on the key is limited, the key amount is greatly reduced in order to reduce the maximum number of teeth of the incomplete gear without causing tooth top interference. Of course, the reference circle diameter of the intermediate gear cannot be too large, and the larger the reference circle diameter is, the closer to the rack, the more likely tooth tip interference occurs.

In the aspect of determining gear parameters, because the gear transmission in the scheme has the characteristics of low speed and light load, theoretically, although the modulus can be reduced and the number of teeth can be increased, a certain fit clearance is reserved for easy insertion and extraction of a key in consideration of the influence of machining errors, and if the gear teeth are too small, transmission distortion and failure are easily caused. Meanwhile, the running distance of the rack is integral multiple of the tooth pitch, the cutting of the unlocking insertion plate needs certain thickness and strength, the width of the rectangular opening of the rack cannot be smaller than the thickness of the cutting, and sufficient tooth pitch is inevitably needed, so that the number of teeth of the small gear of the key is small, the modulus is large, and the tooth pitch is large.

In the rest state, directly above the key in the axial direction is one of the rows of roots of each pinion, aligned with the centers of the crests of the row of teeth of the intermediate gear directly below, with the aim of: when the key is rotated clockwise from a static state, the first gear tooth positioned on the right side right above the key in the axial direction in the static state, namely the last gear tooth participating in meshing of the incomplete gear, can be separated from the tooth space of the intermediate gear, and the corresponding intermediate gear and the rack keep still, which is important for the incomplete gear with the largest number of teeth, because the first gear tooth participating in meshing is closest to the intermediate gear, the tooth top interference phenomenon can be generated if the intermediate gear rotates along with the intermediate gear.

The rack A and the rack B are mainly characterized in that the positions of hangers used for connecting a rack tension spring below the rack are different, the rack tension spring is divided into a left group and a right group, the diameter of the rack tension spring is close to 2 times of the space between the racks, the rack tension spring is favorable for ensuring that the rack tension spring has a large enough diameter, the total thickness of a lock body is reduced, the total length of a key is shortened, the whole structure is compact, and related parts run stably and reliably.

In this scheme, when the rectangle opening of each rack transversely is linear array, the cutting of unblanking picture peg could insert wherein. In fact, the actual travel distance of each rack always has a certain deviation, but the clamping strip of the locking plate and the saw teeth on the rack have a correction function, namely, the clamping strip can align the various irregular saw teeth one by one in the process of inserting the saw teeth.

When the handle is pressed down to unlock the lock, the first flange of the cam firstly contacts with the protrusion of the locking plate, the clamping strip of the locking plate is inserted into the sawtooth of each rack, each rack can not move horizontally, and then the second flange of the cam starts to contact with the protrusion of the inserting plate and pushes the unlocking inserting plate to swing, so that the lock can not be unlocked by poking the middle gear and finding the position of the rectangular opening of the rack by feeling, namely the lock can not be unlocked technically. If the handle is rotated by a strong force, the handle idles.

The key hole has no tiny parts, and the lock can not be opened even if the key hole is damaged by using an electric drill. The lock body is also free of micro parts, and is stable and durable as a whole.

If the number of the pinions, the intermediate gears and the racks of the key is 7, the number of the teeth of the complete pinions is 6, and the modulus is 1.5, the reference circle diameter of the pinions is 9 mm, the pitch is the circumference ratio multiplied by the modulus 1.5, namely 4.71 mm, and the pitch of the intermediate gears, the spur racks and the saw teeth is also 4.71 mm. Since the number of teeth of a certain pinion may be one of 0, 1, 2, 3, 4, 5, and 6, the key amount is 7 powers of 7, i.e. 82.3 ten thousand, which greatly exceeds the national standard "class C" lock. Meanwhile, the level difference of the key is equal to 4.71 millimeters of one tooth pitch, greatly exceeds the level difference of common marbles and teeth by 0.5 millimeter, and the actually used key amount is still equal to a theoretical value even considering processing errors and fit clearance.

Further, each part position of the unlocking control mechanism can be rearranged, namely, the unlocking control mechanism is overturned by 180 degrees forwards or backwards, the principle is unchanged, and the performance of the lock is unchanged: make the pipe be located the top, the key hole center still is on same plumb line with cam mechanism center, the rectangle slot hole is located the lower part of pipe, gear shaft and intermediate gear are located the pipe under, the rack is located the below of intermediate gear, the lock plate, the picture peg of unblanking is located between rack and the cam, wherein the picture peg of unblanking is located under the lock plate, on the cam, when unblanking, still clockwise rotation key a week, each rack removes corresponding distance from a left side to the right side respectively, later push down the handle, cam mechanism forward rotation, the first flange of cam promotes the card strip of lock plate earlier and upwards inserts in the sawtooth of each rack, the second flange promotes the cutting of unblanking the picture peg again and upwards inserts in the rectangle opening of each rack, the cam continues to rotate and unblank. In the scheme, the cam mechanism is positioned at the lowest part, the unlocking actuating mechanism also moves downwards relative to the lock body, and in order to reduce the total size of the lock body, the lock bolt driving shaft, the lock bolt main driving disk and the lock bolt auxiliary driving disk are moved to the right side from the lower side of the outdoor driving disk.

Above scheme, no matter the key hole is arranged in directly over the handle pivot or directly under, is common layout mode, is convenient for with the supporting application of the tool to lock outside panel of perpendicular setting, also accords with popular aesthetic style and use custom.

The scheme describes a lockset structure used by a right-hand door, namely, when a person unlocks outdoors, a door shaft is positioned on the right side of the person. The tool to lock structure that left hand door used all needs to correspond the adjustment because when unblanking, key, the equal anticlockwise rotation of handle pivot.

The invention has the beneficial effects that: the invention relates to a gear key-string mechanical anti-theft lock, which replaces a lock core mechanism of the prior patent with a brand-new unlocking control mechanism, has greatly simplified structure, can be used as a core part of a lock control mechanism, and is characterized in that an intermediate gear, a rack and the like can be processed and manufactured in a stamping mode, the cost is obviously reduced, the assembly process is greatly simplified, and the lock can also be ensured to have the performance characteristics of technical unlocking prevention, destructive unlocking prevention, large key amount, stability, durability and the like.

The present invention is further described below with reference to fig. 1 to 45.

Drawings

FIG. 1: a schematic view of an unlocking control mechanism;

FIG. 2: a-a partial view of FIG. 1;

FIG. 3: a key front view;

FIG. 4: FIG. 3 is a cross-sectional view taken along line b-b;

FIG. 5: a front view of the pipe;

FIG. 6: FIG. 5 is a top view;

FIG. 7: FIG. 6 is a cross-sectional view taken along line c-c;

FIG. 8: a schematic of an intermediate gear;

FIG. 9: the middle gear, the gear shaft, the thin gasket and the thick gasket are assembled schematically;

FIG. 10: a front view of the rack B;

FIG. 11: FIG. 10 is a top view;

FIG. 12: a rack A schematic view;

FIG. 13: the rack A, the rack B, the sliding shaft A, the sliding shaft B, the thin gasket, the thick gasket, the rack tension spring and the lock body are assembled schematically;

FIG. 14: a lock plate front view;

FIG. 15: FIG. 14 is a top view;

FIG. 16: the right side view of FIG. 14;

FIG. 17: unlocking a front view of the plugboard;

FIG. 18: FIG. 17 is a top view;

FIG. 19: the right side view of FIG. 17;

FIG. 20: the cam, the rotary table, the external connecting shaft, the internal connecting shaft, the collision bead spring and the lock body are assembled schematically;

FIG. 21: a front view of the cam;

FIG. 22: FIG. 21 is a top view;

FIG. 23: FIG. 22 is a top view;

FIG. 24: a front view of the turntable;

FIG. 25: FIG. 24 is a top view;

FIG. 26: a schematic view of an external connection shaft;

FIG. 27 is a schematic view showing: front view of the inner connecting shaft;

FIG. 28: FIG. 27 is a top view;

FIG. 29: the turntable and the external connecting shaft are assembled schematically;

FIG. 30: the cam, the rotary disc, the collision beads, the collision bead springs and the external connecting shaft are assembled schematically;

FIG. 31: a schematic view of an unlocking actuator;

FIG. 32: a front view of an outdoor driving disc;

FIG. 33: the right side view of FIG. 32;

FIG. 34: a front view of an indoor drive disc;

FIG. 35: the right side view of FIG. 34;

FIG. 36: a bolt drive shaft schematic;

FIG. 37: a bolt main driving disc schematic diagram;

FIG. 38: a bolt auxiliary driving disc schematic diagram;

FIG. 39: the overall structure schematic diagram of the lockset;

FIG. 40: a schematic view of an unlocking control mechanism when a key hole is right above a handle rotating shaft;

FIG. 41: the unlocking actuating mechanism is arranged on the handle rotating shaft and is arranged above the handle rotating shaft;

FIG. 42: the incomplete gear of 5 gear teeth under static state is meshed with the intermediate gear;

FIG. 43: one of incomplete gear and rack meshing schematic diagrams of 5 gear teeth in a static state;

FIG. 44: a second schematic diagram of incomplete gear and rack meshing of 5 static gear teeth;

FIG. 45: and a third schematic diagram of incomplete gear and rack meshing of 5 static gear teeth.

In each figure: 1, a lock body, 2, an outer side plate, 3, a partition plate, 4, an inner side plate, 5, a coaming, 6, an outer cavity, 7, an inner cavity, 8, an outer side surface of the lock body, 9, an inner side surface of the lock body, 10, a handle rotating shaft, 11, a door leaf outer panel, 12, a reinforcing plate, 13, a cam, 14, an arc-shaped groove, 15, a first flange, 16, a second flange, 17, a rotating disc, 18, a collision ball, 19, a collision ball spring, 20, an outer connecting shaft, 21, an inner connecting shaft, 22, an outdoor driving disc, 23, an unlocking push handle, 24, an locking push handle, 25, a protruding end, 26, a swing rod, 27, an indoor driving disc, 28, a main lock bolt pull plate, 29, a rear push pin, 30, a main lock bolt, 31, a front push pin, 32, a right-angle rotating plate, 33, a lock bolt driving shaft, 34, a main lock bolt driving disc, 35, a lock bolt auxiliary driving disc, 36, 40: a round tube, 41: a key hole, 42: a step shaft, 43: a rectangular long hole, 44: a gear shaft, 45: a middle gear, 46: a thin washer, 47: a thick washer, 48: a rack A, 49: a rack B, 50: a hanging lug, 51: a sawtooth, 52: a rectangular opening, 53: a rack tension spring, 54: a sliding shaft A, 55: a sliding shaft B, 56: a spring connecting column, 57: a locking plate, 58: a clamping bar, 59: a locking plate bulge, 60: a spring connecting hole, 61: a rotating shaft, 62: a locking plate tension spring, 63: an unlocking insertion plate, 64: an insertion bar, 65: an insertion plate bulge, 66: an avoidance hole, 67: an insertion plate tension spring, 68: an outer panel, 69: a handle forward and reverse direction automatic resetting and idling device, and 70: a lock set.

Detailed Description

Embodiment 1:

as shown in fig. 1, 31 and 39, a lock body 1 of a gear serial key mechanical anti-theft lock comprises an outer side plate 2, a partition plate 3, an inner side plate 4 and a surrounding plate 5, a rectangular cavity between the outer side plate 2 and the partition plate 3 is an outer cavity 6, a rectangular cavity between the partition plate 3 and the inner side plate 4 is an inner cavity 7, the side of the outer side plate 2, which is located outside the lock body 1, is a lock body outer side surface 8, the side of the inner side plate 4, which is located outside the lock body 1, is a lock body inner side surface 9, the inner side of a door leaf outer panel 11 is provided with a reinforcing plate 12, the lock body 1 is fixedly installed on the reinforcing plate 12, and the lock body. The outer side of the door leaf outer panel 11 is provided with a lock outer panel 68, and a handle rotating shaft 10 and a handle forward and backward direction automatic resetting and idling device 69 are assembled.

An unlocking control mechanism is assembled in the outer cavity 6 and comprises a key driving mechanism, a blocking mechanism and a cam mechanism, wherein the key driving mechanism comprises a key 70, a round pipe 40, a gear shaft 44, an intermediate gear 45, a thin gasket 46, a thick gasket 47, a rack A48, a rack B49, a rack tension spring 53, a sliding shaft A54, a sliding shaft B55 and a spring connecting column 56; the blocking mechanism comprises a locking plate 57, a locking plate tension spring 62, an unlocking insertion plate 63, an insertion plate tension spring 67 and a rotating shaft 61; the cam mechanism comprises a cam 13, a rotating disc 17, a collision ball 18, a collision ball spring 19, an external connecting shaft 20 and an internal connecting shaft 21.

The inner cavity 7 and the inner side surface 9 of the lock body are provided with an unlocking actuating mechanism. The unlocking actuating mechanism assembled in the inner cavity 7 comprises an outdoor driving disk 22, a swing rod 26, an indoor driving disk 27, a main lock bolt pulling plate 28, a rear pushing pin 29, a front pushing pin 31, a right-angle rotating plate 32, a lock bolt driving shaft 33, a lock bolt main driving disk 34 and the outer side part of an indoor driving shaft 38; the unlocking actuator mounted on the inner side 9 of the lock body comprises a main lock bolt 30, an indoor driving plate 39, a bolt auxiliary driving plate 35, a bolt connecting plate 36, a bolt 37 and the inner side part of an indoor driving shaft 38.

As shown in fig. 1, the through hole of the cylindrical tube 40 is a key hole 41 for inserting a key 70 therein. The key hole 41 is located directly below the center of the cam mechanism.

As shown in fig. 5, 6 and 7, the outer end of the circular tube 40 is in the shape of a stepped shaft, and the upper portion of the circular tube 40 located in the outer cavity 6 is provided with 1 rectangular long hole 43. As shown in fig. 2, the stepped shaft 42 of the circular tube 40 is assembled with the through hole of the outer panel 2 and extends out of the outer side 8 of the lock body, and then passes through the reinforcing plate 12 and the door outer panel 11, the outer end surface of the stepped shaft 42 is flush with the outer surface of the door outer panel 11, and the inner end of the circular tube 40 is fixedly assembled with the partition plate 3.

As shown in fig. 1, 2 and 8, a gear shaft 44 is arranged right above the circular tube 40, 7 identical intermediate gears 45 are movably assembled on the gear shaft 44, the intervals of the intermediate gears 45 are identical, and the lower parts of the intermediate gears 45 are all embedded into the rectangular long holes 43 of the circular tube 40. As shown in fig. 9, 1 identical thin washer 46 is movably fitted on the gear shaft 44 between the

intermediate gears

45, and 1 thick washer 47 is movably fitted between the outer panel 2 and the outermost intermediate gear 45 and between the partition panel 3 and the innermost intermediate gear 45.

As shown in fig. 1 and 13, 1 rack having the same thickness as the intermediate gear 45 is provided above each intermediate gear 45. As shown in fig. 2 and 13, all the racks are divided into two types, namely a rack a48 and a rack B49, according to the structural shape, the number of the racks a48 is 3, the number of the racks B49 is 4, and the assembly sequence of the racks from outside to inside is as follows: first 1 rack B49 is assembled, then 1 rack a48, then 1 rack B49, and so on.

As shown in fig. 10, 11 and 12, each rack has a plurality of teeth in the shape of a spur rack on the lower side of the middle portion thereof, and is engaged with the corresponding intermediate gear 45. The upper side of the middle part of each rack is provided with a plurality of saw teeth 51, the saw teeth 51 are in the shape of isosceles triangles, and the space between the saw teeth 51 is the same as the tooth pitch of the straight rack at the lower part. The left upper random position of each rack is provided with 1 rectangular opening 52 of the same size. The left lower part of the rack A48 and the right lower part of the rack B49 are both provided with hanging lugs 50 protruding downwards, and each hanging lug 50 is provided with a through hole.

As shown in fig. 1, the left side and the right side of the outer cavity 6 are respectively provided with 1 sliding shaft a54 and 1 sliding shaft B55, the left side and the right side of each rack are respectively provided with 1 oblong hole, and the racks are respectively movably assembled with the sliding shaft a54 and the sliding shaft B55, that is, the rack a48 and the rack B49 can horizontally reciprocate for a certain distance. As shown in fig. 13, 1 thin washer 46 is movably fitted between the respective racks on the slide shaft a54 and the slide shaft B55, and 1 thick washer 47 is movably fitted between the outer panel 2 and the outermost rack B49 and between the partition panel 3 and the innermost rack B49. The left side and the right side of the lower part of the outer cavity 6 are respectively provided with 1 spring connecting column 56, the through holes on the hanging lugs 50 are respectively connected with the left ends of the rack tension springs 53, and the right ends of the rack tension springs 53 are respectively connected with the corresponding spring connecting columns 56.

As shown in fig. 3 and 4, the key 70 is formed by connecting 7 pinions in series, and the module, pitch diameter, tip diameter, root diameter, pitch, pressure angle, and the like of each pinion are the same. The teeth of the pinions are aligned one by one along the axial direction, the pitch of the pinions is the same as that of the intermediate gear 45 and the rack, but one of the pinions is either a complete gear or an incomplete gear or the number of teeth of the pinions is zero, and the arrangement sequence of the pinions is randomly arranged and corresponds to the position of the rectangular opening 52 of the corresponding rack, so that different keys are formed. Meanwhile, no matter how many teeth are arranged on each incomplete gear, the toothed part or the non-toothed part is continuous, and the position right above the axial direction of the key is taken as a starting point, the toothed part or the non-toothed part is from toothed to non-toothed part according to the clockwise direction, after the key is rotated clockwise for one circle, the running distance of each rack is equal to the product of the number of teeth and the tooth pitch of the corresponding pinion on the key 70, and at the moment, each rectangular opening 52 on each rack is transversely arranged in a straight line.

As shown in fig. 1, the locking plate 57 and the unlocking insertion plate 63 in the blocking mechanism are located between each rack and the cam 13, the rotating shaft 61 is arranged at the right side of the outer cavity 6, and the right ends of the locking plate 57 and the unlocking insertion plate 63 are movably assembled with the rotating shaft 61 at the same time. As shown in fig. 14, 15 and 16, a clip strip 58 is vertically and downwardly provided at the left end of the lock plate 57, the lower portion of the clip strip 58 is shaped like an inverted isosceles triangle, and 1 locking plate protrusion 59 in the shape of a triangle or an arc is provided at the upper portion of the left end of the lock plate 57. As shown in fig. 17, 18 and 19, a rectangular insertion strip 64 is vertically and downwardly arranged at the left end of the unlocking

insertion plate

63, 1 triangular or circular arc-shaped insertion plate protrusion 65 is also arranged at the upper part of the left side of the unlocking

insertion plate

63, 1 oblong hole-shaped avoidance hole 66 is arranged on the unlocking insertion plate 63 inside the insertion plate protrusion 65, and the locking plate protrusion 59 upwards penetrates through the avoidance hole 66 and then is flush with the insertion plate protrusion 65 in height and is positioned right below the cam mechanism. The left end of the unlocking insertion plate 63 is also provided with a spring connection hole 60. As shown in fig. 1, the spring connecting hole 60 of the unlocking insertion plate 63 is movably connected with the lower end of an insertion plate tension spring 67, the upper end of the insertion plate tension spring 67 is connected with the lock body 1, and the connection mode is realized by additionally arranging 1 spring connecting column or punching 1 spring hook on the enclosing plate 5. The right side of unblanking picture peg 63 still is equipped with 1 through-hole, also is equipped with spring coupling hole 60 on the corresponding position of lock plate 57 of this through-hole below, and the lower extreme of lock plate extension spring 62 passes this through-hole of unblanking picture peg 63 after again with the spring coupling hole 60 swing joint of lock plate 57, and the upper end of lock plate extension spring 62 is connected with lock body 1, and its connected mode adopts and adds 1 spring coupling post or 1 spring hanger of punching press on bounding wall 5 and realizes.

As shown in fig. 1, in a direction perpendicular to the lock body 1 from the outside to the inside, the teeth of the spur rack portion of each rack and the teeth of the intermediate gear 45 are aligned one by one in the transverse direction and are aligned in a straight line, respectively, and the center of the top of the row of teeth right below the intermediate gear 45 is on the same vertical line with the center of the keyhole 41, and the bottom of the row of teeth of each pinion is right above the key 70 in the axial direction. The teeth 51 on the upper side of the middle portion of each rack are aligned one by one in the lateral direction and are aligned in a straight line, and the tooth root of one row of the teeth 51 is on the same vertical line with the catch strip 58 of the lock plate 57.

As shown in fig. 21, 22 and 23, the cam 13 is provided with two adjacent circular arc grooves 14 along the circumferential direction, and one end surface of each of the two circular arc grooves 14 is respectively provided with a first flange 15 and a second flange 16 which are staggered by a certain angle. In the rest position, the locking plate projection 59 and the insertion plate projection 65 are located in the circular arc-shaped groove 14 and are aligned with the first flange 15 and the second flange 16, respectively.

As shown in fig. 20, 26, 29 and 39, the square body at the outer end of the outer connecting shaft 20 is located outside the lock body outer side surface 8, and passes through the reinforcing plate 12 and the door outer panel 11 to be movably assembled with the handle rotating shaft 10 and synchronously rotate. The square body at the inner side end of the external connecting shaft 20 is assembled with the rotary disc 17 and synchronously rotates. As shown in fig. 24, 25 and 30, the rotary disc 17 is assembled with the inner circular surface of the cam 13 through the collision bead 18 and the collision bead spring 19, when the resistance force applied to the cam 13 does not exceed the limit value, the rotary disc 17 can drive the cam 13 to rotate synchronously, and when the cam 13 cannot rotate, the rotary disc 17 can idle against the thrust force of the collision bead spring 19. As shown in fig. 20, 27 and 28, the inner square hole of the cam 13 is assembled with the outer square shaft of the inner connecting shaft 21 to rotate synchronously, and the inner end of the inner connecting shaft 21 is provided with a flat shaft and a round shaft, wherein the round shaft is positioned at the end, and the flat shaft and the round shaft penetrate through the partition plate 3 and then are positioned in the inner cavity 7.

As shown in fig. 31, 32, 33 and 39, the flat shaft of the inner connecting shaft 21 is assembled with the outdoor driving disc 22 and synchronously rotates, the circular shaft at the end of the inner connecting shaft 21 is movably assembled with the swing link 26, and the unlocking push handle 23 and the locking push handle 24 on the outdoor driving disc 22 are respectively located at two sides of the swing link 26 and used for pushing the swing link 26 to swing in the forward and reverse directions. As shown in fig. 31, 34, 35 and 39, the flat shaft at the outer end of the indoor driving shaft 38 is assembled with the indoor driving disk 27 for synchronous rotation, and the indoor driving disk 27 is also provided with the unlocking push handle 23 and the locking push handle 24, which are respectively located at two sides of the swing link 26 for pushing the swing link 26 to swing in both forward and reverse directions. The indoor driving shaft 38 penetrates through the inner side plate 4 and then is assembled with the indoor driving sheet 39 to synchronously rotate, and the inner end of the indoor driving shaft 38 is movably assembled with an indoor handle or knob to synchronously rotate.

As shown in fig. 31, 36, 37, 38 and 39, the outer end of the latch bolt driving shaft 33 is assembled with the latch bolt main driving disc 34 and synchronously rotates, and the inner end of the latch bolt driving shaft 33 passes through the inner side plate 4 and then is assembled with the latch bolt auxiliary driving disc 35 and synchronously rotates.

Description of the drawings: in fig. 39, the "Z" direction indicates that the actual position of the rear push pin 29 should be shifted to the left; the "Y" direction indicates that the actual position of the deadbolt actuation shaft 33 should be shifted to the right. The positions in the figures are to stretch the actual overlapping part views to the left and right, respectively, for clarity of illustration.

Outdoor unlocking operation process and working principle:

as shown in fig. 1, 31 and 39, a correct key 70 is inserted and rotates clockwise for one circle, the racks are respectively moved from right to left by a corresponding distance through the intermediate gear 45, then the handle is pressed down, i.e. the handle rotates forward (clockwise), the handle drives the outer connecting shaft 20 to rotate, the outer connecting shaft 20 drives the rotary disc 17 to rotate, the rotary disc 17 drives the cam 13 to rotate, the first flange 15 of the cam 13 first contacts with the locking plate protrusion 59 and pushes the locking plate 57 to swing counterclockwise, the clamping strips 58 of the locking plate 57 are inserted into the saw teeth 51 of each rack, each rack cannot move horizontally any more, then the second flange 16 of the cam 13 starts to contact with the inserting plate protrusion 65 and pushes the unlocking inserting plate 63 to swing counterclockwise, the inserting strips 64 of the unlocking inserting plate 63 are inserted into the rectangular openings 52 of each rack which are arranged in a straight line, the cam 13 can continue to rotate and drive the inner connecting shaft 21 to rotate, and further drive the outdoor driving disk 22, the unlocking push handle 23 on the outdoor driving disk 22 pushes the swing rod 26 to swing in the forward direction, the end of the swing rod 26 pushes the main lock bolt pull plate 28 to move rightwards, the rear push pin 29 on the main lock bolt pull plate 28 pulls the main lock bolt 30 to move rightwards, the front push pin 31 on the main lock bolt pull plate 28 pushes the two right-angle rotating plates 32 to rotate, and the two right-angle rotating plates 32 respectively drive the ground rods to move vertically. In the later stage of the rotation of the outdoor driving disk 22, the protruding end 25 on the outdoor driving disk 22 pushes the bolt main driving disk 34 to rotate, so as to drive the bolt driving shaft 33 to rotate, the bolt auxiliary driving disk 35 rotates along with the bolt main driving disk, and the bolt auxiliary driving disk 35 pulls the bolt connecting plate 36 and the bolt 37 to move rightwards, so as to complete the outdoor unlocking. Then the handle and the cam mechanism are reset, the unlocking inserting plate 63 and the locking plate 57 are reset successively under the pulling of the inserting plate tension spring 67 and the locking plate tension spring 62, the racks are reset rightwards under the action of the rack tension spring 53, the key 70 rotates reversely for a circle, and then the key 70 is pulled out.

If the key 70 is incorrect, the cam 13 can still push the clamping strip 58 of the locking plate 57 to insert into the sawtooth 51 of each rack, and each rack can not move any more, but the rectangular openings 52 of each rack can not be arranged in a straight line, and the inserting strip 64 of the unlocking insertion plate 63 can not insert into the rectangular openings, so that the cam 13 is prevented from further rotating, and the lockset can not be unlocked. If the handle is rotated by a strong force, the handle idles.

Indoor unlocking operation process:

when the indoor handle or knob rotates forwards, the indoor driving shaft 38 is driven to rotate forwards, so that the indoor driving disc 27 is driven to rotate forwards, the unlocking push handle 23 on the indoor driving disc 27 pushes the swing rod 26 to swing forwards, the swing rod 26 pushes the main lock bolt pull plate 28 to move rightwards, and the unlocking movement of the main lock bolt 30 and the ground rod is completed; in the later stage of forward rotation of the indoor driving shaft 38, the indoor driving sheet 39 pushes the bolt auxiliary driving disc 35 to rotate, and then the bolt 37 is pulled to move rightwards to unlock the lock.

The outdoor locking operation process comprises the following steps:

when the outdoor lock is locked, the key 70 is not used, the handle (namely the reverse handle) is rotated reversely, the handle drives the cam mechanism to rotate reversely, so that the locking push handle 24 on the outdoor driving disk 22 pushes the swing rod 26 to swing reversely, and the swing rod 26 drives the main lock bolt pulling plate 28 to move reversely to complete the locking. During the outdoor locking process, the locking plate protrusion 59 and the inserting plate protrusion 65 are only in sliding contact with the bottom of the circular arc groove 14 of the cam 13, and the rotation of the cam 13 is not influenced.

Indoor locking operation process:

when the indoor lock is locked, the indoor handle or knob drives the indoor driving disk 27 to rotate reversely through the indoor driving shaft 38, and the locking push handle 24 on the indoor driving disk 27 pushes the swing rod 26 to swing reversely to complete the locking.

In the present embodiment, 7 pinions, intermediate gears 45, and racks of the key are selected, the number of teeth of the full pinion is 6, and the module is 1.5 in a unified manner. The diameter of the reference circle of the pinion of the key 70 is 9 mm, and the pitch is the circumference ratio multiplied by the modulus 1.5, namely 4.71 mm; the number of teeth of the intermediate gear 45 is 12, the reference circle diameter is 18 mm, and the pitch is 4.71 mm; the pitch of the teeth 51 on the upper part of the rack is also 4.71 mm.

Since the number of teeth of a certain pinion may be one of 0, 1, 2, 3, 4, 5, and 6, the key amount is 7 powers of 7, i.e. 82.3 ten thousand, which greatly exceeds the national standard "class C" lock.

As shown in fig. 3, the number of teeth of the pinion gear of the key 70 in the present embodiment is 2, 6, 5, 0, 3, 4, and 1 in order from the key base to the key tip. The corresponding rectangular opening 52 of the rack is positioned as shown in fig. 13.

The key of the invention has the grade difference equal to one pitch, which greatly exceeds the grade difference of common marble and tooth pattern by 0.5 mm, and the actually used key amount is still equal to the theoretical value even considering the processing error and the fit clearance.

Fig. 42 shows the meshing between the partial gear and the intermediate gear of 5 teeth in a stationary state, where the "O" direction in the drawing indicates a perpendicular line on which the centers of the partial gear and the intermediate gear are located, and the "D" direction indicates that tooth tip interference does not occur when the two are meshed. In addition, since there is a fit clearance between the tooth tips of the pinions and the tooth profile of the intermediate gear 45, when the key is just unlocked and turned, the last tooth of the incomplete gear engaged therewith is separated from the tooth grooves of the intermediate gear, so that the corresponding rack can be kept stationary. Meanwhile, the last gear tooth participating in meshing is not meshed with the intermediate gear any more, and after the key rotates for one circle, the actual rotation angle of the intermediate gear 45 is reduced by a little, namely the corresponding rack does not run in place, but the clamping strip 58 and the saw teeth 51 have the correction functions: because the pitch is 4.71 mm, the pitch is half 2.35 mm, the distance that the rack runs less is much less than 2.35 mm, and the clamping strip 58 can align the uneven saw teeth 51 one by one during the process of inserting the saw teeth 51.

Fig. 43, 44 and 45 show a comparison scheme, namely, a situation that an incomplete gear manufactured according to a standard gear is meshed with a rack.

Fig. 43 shows the meshing between the incomplete gear of 5 teeth and the rack when the tooth crest center and the keyhole center of the rack are on the same vertical line in the static state. The direction "O" in the drawing indicates a perpendicular line on which the center of the keyhole is located, and the direction "E" indicates that the first meshing tooth of the partial gear interferes with the tooth tip of the tooth on the rack that is not in contact with the tooth tip, so that the locking phenomenon occurs.

In fig. 44, the "O" direction represents a perpendicular line on which the center of the keyhole is located. In a static state, the tooth root of the rack and the tooth top center of the last engaged gear tooth of the incomplete gear of the 5 gear teeth are in the O direction, namely the center of 1 tooth top of the incomplete gear in an initial state is opposite to the rack. The "F1" direction indicates that when the key first begins to rotate, the rack will move to the right, and the first meshing tooth of the partial gear will interfere with the rack's tooth tip, and will also mesh with teeth that are not intended to contact.

In fig. 45, the direction "O" represents a perpendicular line on which the center of the keyhole is located. In a static state, the centers of the toothless parts of 1 tooth root and 5 gear teeth of the incomplete gear are in the direction of 'O', wherein the toothless parts are only 1, namely the center of the toothless part of the incomplete gear in an initial state is opposite to the rack. The "F2" direction indicates that the distance traveled by the 5 teeth incomplete gear drive rack exceeds 5 tooth spaces after one key revolution. The same applies to the case where the number of teeth of the partial gear is 1, 2, 3, or 4, and the key amount is reduced.

Embodiment 2:

as shown in fig. 40 and 41, the positions of the components of the unlocking control mechanism can be rearranged, that is, the unlocking control mechanism of embodiment 1 is turned over by 180 degrees forwards or backwards, the principle is unchanged, and the performance of the lock is unchanged: the circular tube 40 is positioned at the top, the center of the key hole 41 is still on the same vertical line with the center of the cam mechanism, the rectangular long hole 43 is positioned at the lower part of the circular tube 40, the gear shaft 44 and the intermediate gear 45 are positioned under the circular tube 40, the rack is positioned under the intermediate gear 45, the locking plate 57 and the unlocking insertion plate 63 are positioned between the rack and the cam 13, the unlocking insertion plate 63 is positioned under the locking plate 57 and above the cam 13, during unlocking, the key is still rotated clockwise for a circle, each rack moves for a corresponding distance from left to right, then the handle is pressed down, the cam mechanism rotates positively, the first flange 15 of the cam 13 firstly pushes the clamping strip 58 of the locking plate 57 to be inserted upwards into the saw teeth 51 of each rack, the second flange 16 then pushes the insertion strip 64 of the unlocking insertion plate 63 to be inserted upwards into the rectangular opening 52 of each rack, and the cam 13 continues.

As shown in fig. 41, in this embodiment, since the cam mechanism is located at the lowest position, the unlocking actuator moves downward with respect to the lock body 1, and in order to reduce the overall size of the lock body 1, the bolt driving shaft 33, the bolt driving main disk 34, and the bolt driving sub-disk 35 are moved from the lower side of the outdoor driving disk 22 to the right side thereof.

Claims

1. A gear serial key mechanical anti-theft lock comprises an outer side plate, a partition plate, an inner side plate and a surrounding plate, wherein a rectangular cavity between the outer side plate and the partition plate is an outer cavity, a rectangular cavity between the partition plate and the inner side plate is an inner cavity, the side of the outer side plate positioned outside the lock body is the outer side of the lock body, the side of the inner side plate positioned outside the lock body is the inner side of the lock body, an unlocking control mechanism is assembled in the outer cavity and comprises a cam mechanism, the cam mechanism is assembled by a cam, a rotating disc, a collision ball spring, an inner connecting shaft and an outer connecting shaft, two adjacent arc-shaped grooves are arranged on the cam along the circumferential direction, one end face of each arc-shaped groove is a first flange and one end face of each arc-shaped groove is a second flange, the two flanges are staggered by a certain angle, a reinforcing plate is arranged on the, the outer side of the lock body is contacted with the reinforcing plate, the square body of the outer side end of the outer connecting shaft is positioned outside the outer side of the lock body, penetrates through the reinforcing plate and the outer panel of the door leaf and is movably assembled and synchronously rotated with the handle rotating shaft, the square body of the inner side end of the outer connecting shaft is assembled and synchronously rotated with the turntable, the turntable is assembled and synchronously rotated with the inner circular surface of the cam through the collision bead and the collision bead spring, when the resistance force borne by the cam does not exceed the limit value, the turntable can drive the cam to synchronously rotate, when the cam cannot rotate, the turntable can idle against the thrust force of the collision bead spring, the square hole in the inner side of the cam is assembled and synchronously rotated with the square shaft of the outer side end of the inner connecting shaft, the inner side end of the inner connecting shaft is provided with a flat shaft and a round shaft, wherein the round shaft is positioned at the end, penetrates through the partition plate and is positioned in the inner cavity, the inner side surfaces, The lock comprises a swing rod, an indoor driving disk, a main lock bolt pulling plate, a rear pushing pin, a front pushing pin, a right-angle rotating plate, a lock bolt driving shaft, a lock bolt main driving disk and the outer side part of the indoor driving shaft, wherein an unlocking executing mechanism assembled on the inner side surface of a lock body comprises a main lock bolt, an indoor driving plate, a lock bolt auxiliary driving disk, a lock bolt connecting plate, a lock bolt and the inner side part of the indoor driving shaft, wherein a flat shaft of an inner connecting shaft is assembled with the outdoor driving disk and synchronously rotates, a round shaft at the end head of the inner connecting shaft is movably assembled with the swing rod, an unlocking push handle and an locking push handle on the outdoor driving disk are respectively positioned on the two sides of the swing rod and are used for pushing the swing rod to swing in the positive and negative directions, the flat shaft at the end head of the outer side of the indoor driving shaft is assembled, an indoor driving shaft penetrates through an inner side plate inwards and then is assembled with an indoor driving sheet and synchronously rotates, an inner end of the indoor driving shaft is movably assembled with an indoor handle or a knob and synchronously rotates, an outer end of the lock bolt driving shaft is assembled with a lock bolt main driving disc and synchronously rotates, an inner end of the lock bolt driving shaft penetrates through the inner side plate and then is assembled with a lock bolt auxiliary driving disc and synchronously rotates, when the handle is pressed down, namely the handle rotates forwards, the handle drives an outer connecting shaft to rotate, the outer connecting shaft drives a rotating disc to rotate, the rotating disc drives a cam to rotate, the cam drives an inner connecting shaft to rotate and further drives an outdoor driving disc to rotate, an unlocking push handle on the outdoor driving disc pushes a swing rod to swing forwards, an end of the swing rod pushes a main lock bolt pulling plate to move rightwards, a rear push pin on the main lock bolt pulling plate pulls the main lock bolt pulling plate to move rightwards, a front, in the later stage of the rotation of the outdoor driving disk, the protruding end on the outdoor driving disk pushes the lock tongue main driving disk to rotate so as to drive the lock tongue driving shaft to rotate, the lock tongue auxiliary driving disk follows the rotation, the lock tongue auxiliary driving disk then pulls the lock tongue connecting plate and the lock tongue to move rightwards so as to complete outdoor unlocking, when the indoor handle or knob rotates forwards, the indoor driving shaft is driven to rotate forwards so as to drive the indoor driving disk to rotate forwards, the unlocking push handle on the indoor driving disk pushes the swing rod to swing forwards, the swing rod then pushes the main lock bolt pull plate to move rightwards so as to complete unlocking movement of the main lock bolt and the ground post, in the later stage of the forward rotation of the indoor driving shaft, the lock tongue auxiliary driving disk is pushed to rotate through the indoor driving sheet so as to pull the lock tongue to move rightwards so as to unlock the, the pendulum rod promotes the main set bar arm-tie and removes left and accomplish and lock again, and when indoor locking, indoor handle or knob drive indoor driving-disc antiport through indoor drive shaft, and the last locking push handle that locks of indoor driving-disc promotes the pendulum rod antiport and accomplishes and lock characterized by: the unlocking control mechanism assembled in the outer cavity of the lock body also comprises a key driving mechanism and a blocking mechanism, the key driving mechanism comprises 1 round pipe, a through hole of the round pipe is a key hole and is used for inserting a key, the key hole is positioned under the center of the cam mechanism, the outer side end of the round pipe is in a step shaft shape, the step shaft is assembled with the through hole of the outer side plate of the lock body and extends out of the outer side surface of the lock body, the step shaft penetrates through the reinforcing plate and the outer panel of the door leaf, the outer end surface of the step shaft is flush with the outer surface of the outer panel of the door leaf, the inner side end of the round pipe is fixedly assembled with the partition plate, the upper part of the round pipe positioned in the outer cavity is provided with 1 rectangular long hole, a gear shaft is arranged right above the round pipe, a plurality of same intermediate gears are movably assembled on the gear shaft and are equidistant, the lower parts of the intermediate, 1 thin gasket of movable assembly between each intermediate gear, 1 thick gasket of each movable assembly between the intermediate gear of outside board and outside and between baffle and the intermediate gear of most inboard, the top of each intermediate gear is equipped with 1 rack the same with intermediate gear thickness respectively, and all racks divide into rack A, rack B two kinds of types according to the structural shape altogether, and each rack is from outside to inside assembly order: assembling 1 rack B, then assembling 1 rack A, then assembling 1 rack B, and so on, namely, the racks A and B are mutually spaced, the lower side of the middle part of each rack is provided with a plurality of teeth in the shape of straight racks and meshed with the corresponding middle gear, the upper side of the middle part of each rack is provided with a plurality of sawteeth, the shape of the sawteeth is isosceles triangle, the space of the sawteeth is the same as the tooth pitch of the lower part, the random position of the upper part of the left side of each rack is provided with 1 rectangular opening with the same size, the left side and the right side of the outer cavity are respectively assembled with 1 sliding shaft A and 1 sliding shaft B, the left side and the right side of each rack are respectively provided with 1 long round hole and movably assembled with the sliding shaft A and the sliding shaft B, namely, the racks A and the racks B can horizontally reciprocate for a certain distance, and 1 thin cushion ring is movably assembled between the racks on the sliding shaft A and the sliding shaft B, 1 thick gasket is movably assembled between the outer side plate and the outermost side rack and between the partition plate and the innermost side rack, 1 spring connecting column is respectively arranged on the left side and the right side of the lower part of the outer cavity, a downward protruding lug is arranged on the lower part of the left side of the rack A, a downward protruding lug is also arranged on the lower part of the right side of the rack B, a through hole is arranged on each lug and is respectively connected with the left end of a rack tension spring, the right end of each rack tension spring is respectively connected with the corresponding spring connecting column, a key is formed by connecting a plurality of pinions with the same parameters in series, the gear teeth of each pinion are aligned one by one along the axial direction, the space between each pinion is the same as that between a middle gear and a rack, but a certain pinion is a complete gear or an incomplete gear or has zero number of teeth, the arrangement sequence of the pinions is randomly arranged and corresponds to the position of, thereby forming different keys, simultaneously, no matter how many teeth are on each incomplete gear, the toothed part or the toothless part is continuous, and the position right above the axial direction of the key is taken as a starting point, the toothed part or the toothless part is from toothed to toothless part according to the clockwise direction, after the key is rotated clockwise for one circle correctly, the running distance of each rack is equal to the product of the tooth number and the tooth pitch of a pinion on the corresponding key, at the moment, each rectangular opening on each rack is transversely arranged in a straight line, a blocking mechanism is positioned between each rack and a cam, wherein, the blocking mechanism comprises 1 locking plate and 1 unlocking plug board, the right side of an outer cavity is also provided with 1 rotating shaft, the right ends of the locking plate and the unlocking plug board are movably assembled with the rotating shaft at the same time, the length of the unlocking plug board is larger than that of the locking plate, the unlocking plug board is positioned on the locking plate, the left end of the, the upper part of the left end of the lock plate is provided with 1 triangular or circular arc-shaped lock plate bulge, the left end of the unlocking insertion plate is vertically downwards provided with a rectangular insertion strip, the upper part of the left side of the unlocking insertion plate is also provided with 1 triangular or circular arc-shaped insertion plate bulge, the unlocking insertion plate on the inner side of the insertion plate bulge is provided with 1 long round hole-shaped avoidance hole, the lock plate bulge upwards penetrates through the avoidance hole and is flush with the height of the insertion plate bulge, and is positioned in a circular arc-shaped groove under the cam, the lock plate bulge is aligned with the first flange, the insertion plate bulge is aligned with the second flange, the left end of the unlocking insertion plate is also provided with a spring connecting hole and is movably connected with the lower end of an insertion plate tension spring, the upper end of the insertion plate tension spring is connected with the lock body, the right side of the unlocking insertion plate is also provided with 1 through hole, the corresponding position of the lock plate under the through hole is also provided with a spring connecting, the upper end of the tension spring of the locking plate is connected with the lock body, in a static state, in a direction perpendicular to the lock body from outside to inside, each tooth of a straight rack part on each rack and each gear tooth of the intermediate gear are respectively aligned and linearly arranged one by one, the tooth crest centers of a row of gear teeth right below the intermediate gear and the center of a key hole are on the same vertical line and are aligned with a row of tooth roots right above the key shaft, all saw teeth on each rack are also aligned and linearly arranged one by one, and the tooth roots of one row of saw teeth and the clamping strips of the locking plate are on the same vertical line, when a correct key is inserted for unlocking, the key is rotated clockwise for one circle, each rack respectively moves from right to left by corresponding distances, then the handle is pressed downwards, the cam rotates clockwise, the first flange of the cam is firstly in convex contact with the locking plate and pushes the locking plate to swing anticlockwise, and the clamping strips of the locking plate are, each rack can not move horizontally any more, then the second flange of the cam starts to contact with the plug board protrusion and push the unlocking plug board to swing anticlockwise, and the cutting slips of the unlocking plug board are inserted into the rectangular openings of the racks which are arranged in a straight line, the cam can continue to rotate and drive the corresponding unlocking actuating mechanism to operate so as to complete unlocking, then the handle and the cam mechanism reset, the unlocking plug board and the locking board reset successively under the pulling of the plug board tension spring and the locking board tension spring respectively, each rack resets rightwards under the action of the rack tension spring, the key rotates reversely for a circle, then the key is drawn out, if the key is incorrect, the cam still can push the cutting slips of the locking board to insert into the sawteeth of each rack, each rack can not move any more, but the rectangular openings of each rack can not be arranged in a straight line, the cutting slips can not be inserted into the rectangular openings, namely the cam can not continue to rotate, and, when the lock is locked, a key is not needed, the handle is rotated reversely, the cam mechanism rotates reversely and drives the unlocking actuating mechanism to operate reversely to lock, the protrusion of the locking plate and the protrusion of the inserting plate only contact with the bottom of the arc-shaped groove of the cam in a sliding mode, and the rotation of the cam is not affected.

2. The mechanical anti-theft lock with the gear string and the key as claimed in claim 1 is characterized in that: the positions of all parts of the unlocking control mechanism can be rearranged, namely, the unlocking control mechanism of claim 1 is turned over by 180 degrees forwards or backwards to ensure that the circular tube is positioned at the top, the center of the key hole is still on the same vertical line with the center of the cam mechanism, the rectangular long hole is positioned at the lower part of the circular tube, the gear shaft and the intermediate gear are positioned right below the circular tube, the rack is positioned below the intermediate gear, the locking plate and the unlocking inserting plate are positioned between the rack and the cam, wherein the unlocking inserting plate is positioned below the locking plate and above the cam, when unlocking, the key is still rotated clockwise for a circle, each rack moves corresponding distance from left to right, then the handle is pressed down, the cam mechanism rotates positively, the first flange of the cam pushes the clamping strip of the locking plate to insert upwards into the sawtooth of each rack, the second flange pushes the cutting of the unlocking insertion plate to be inserted upwards into the rectangular opening of each rack, and the cam continues to rotate to unlock.