CN110374406B

CN110374406B - Automatic messy code coded lock

Info

Publication number: CN110374406B
Application number: CN201910721580.6A
Authority: CN
Inventors: 李议建
Original assignee: Xiamen Make Security Technology Co Ltd
Current assignee: Xiamen Make Security Technology Co Ltd
Priority date: 2019-08-06
Filing date: 2019-08-06
Publication date: 2024-03-29
Anticipated expiration: 2039-08-06
Also published as: CN110374406A

Abstract

The invention discloses an automatic code-disorder coded lock, which comprises a panel, a character wheel assembly, a knob and a fixed seat; the knob is rotatably arranged between the upper part and the lower part of the panel and the fixed seat; the character wheel assembly is arranged in the knob, and a clamping position is movably arranged between the character wheel of the character wheel assembly and the auxiliary bushing. The invention can automatically dial the disordered password during locking, and has high safety.

Description

Automatic messy code coded lock

Technical Field

The invention relates to the field of mechanical coded locks, in particular to an automatic code-disorder coded lock.

Background

The mechanical coded lock has the advantages of good safety and convenient use, and is widely applied to the market; however, the password can be prevented from being revealed only by manually dialing the password after the existing mechanical password lock is locked, so that the password lock capable of automatically dialing the password during locking is needed.

Disclosure of Invention

The invention aims to provide an automatic code-scrambling coded lock which can automatically dial a code during locking.

In order to achieve the above object, the solution of the present invention is:

an automatic code-disorder coded lock comprises a panel, a character wheel assembly, a knob and a fixed seat; the knob is rotatably arranged between the upper part and the lower part of the panel and the fixed seat, and the top of the knob is opened; the character wheel assembly is arranged in the knob and comprises a mandrel, n bushing assemblies movably sleeved with the mandrel and n character wheels respectively sleeved with the bushing assemblies, wherein n is an integer greater than or equal to 2, and the bushing assemblies are mutually abutted; the two ends of the mandrel are divided into a first end and a second end, and the n bushing assemblies are sequentially divided into a first bushing assembly and an n bushing assembly along the direction from the first end to the second end of the mandrel; each bushing assembly comprises two bushings sleeved on the mandrel and abutted against each other, wherein the two bushings of the ith bushing assembly are sequentially divided into an ith auxiliary bushing and an ith main bushing along the direction from the first end to the second end of the mandrel, and i is an integer from 1 to n; the inner wall of the ith main bushing is provided with an ith main bushing through groove, and the inner wall of the ith auxiliary bushing is provided with an ith auxiliary bushing through groove; the n-th character wheels are sequentially divided into a first character wheel and an n-th character wheel along the direction from the first end to the second end of the mandrel, n character wheel holes for respectively inserting the first character wheel and the n-th character wheel are formed in the panel, the i-th character wheel of the i-th main bushing and the i-th auxiliary bushing is movably sleeved on the i-th character wheel, the i-th character wheel is movably meshed with the i-th main bushing, an i-th positioning convex block is arranged on the inner wall of the i-th character wheel, and an i-th messy code convex block which is movably abutted against the i-th positioning convex block is arranged on the outer wall of the i-th auxiliary bushing; the first end of the mandrel is matched with a push block capable of moving along the axial direction of the mandrel, the inner side of the push block abuts against the first auxiliary bushing, a first reset spring for driving the push block to reset is arranged between the push block and the first end of the mandrel, and the outer side of the push block is matched with a limiting pin; a second reset spring is arranged between the second end of the mandrel and the nth main bushing; n+1 mandrel lugs which are arranged in a straight line are sequentially arranged on the mandrel along the direction from the first end to the second end of the mandrel, and the n+1 mandrel lugs are sequentially divided into a first mandrel lug and an n+1 mandrel lug along the direction from the first end to the second end of the mandrel; the ith core shaft lug is meshed with the ith auxiliary bushing through groove of the ith auxiliary bushing, and the (i+1) th core shaft lug is movably meshed with the ith main bushing through groove of the ith main bushing; when the first character wheel to the nth character wheel are all positioned at the correct password position, the first main bushing through groove to the nth main bushing through groove and the first auxiliary bushing through groove to the nth auxiliary bushing through groove are aligned with each mandrel lug of the mandrel so that each bushing assembly can axially move along the mandrel; the inner wall of the knob is provided with a locking positioning through groove, an unlocking positioning through groove and a messy code arc-shaped boss, two ends of the messy code arc-shaped boss are respectively connected with the locking positioning through groove and the unlocking positioning through groove, and the limiting pin is in sliding fit with the locking positioning through groove, the unlocking positioning through groove and the messy code arc-shaped boss; when the automatic code-disorder coded lock is unlocked, the knob is rotated positively, and the limiting pin moves from the locking positioning through groove to the unlocking positioning through groove; when the automatic code-disorder coded lock is locked, the knob is reversely rotated, and the limiting pin moves from the unlocking positioning through groove to the locking positioning through groove through the code-disorder arc-shaped boss; when the limiting pins are embedded in the locking positioning through grooves, each bushing assembly moves to a locking position, at the moment, the ith auxiliary bushing through groove is meshed with the ith mandrel lug, the ith main bushing through groove is separated from the ith+1th mandrel lug, the ith main bushing is meshed with the ith character wheel, and the first positioning lug to the nth positioning lug and the first messy code lug to the nth messy code lug are completely misplaced; when the limiting pin is abutted against the messy-code arc-shaped boss, each bushing assembly moves to a messy-code position, at the moment, the ith auxiliary bushing through groove is meshed with the ith mandrel lug, the ith main bushing through groove is separated from the meshing with the (i+1) th mandrel lug, the ith main bushing is meshed with the ith character wheel, and the ith positioning lug is opposite to the ith messy-code lug; a transmission mechanism is arranged between the knob and the second end of the mandrel, and the rotation of the knob drives the mandrel to rotate around the central rotating shaft of the mandrel through the transmission mechanism; and when the limiting pin moves in the messy code arc-shaped boss, the knob drives the mandrel to rotate at least one circle through the transmission mechanism.

The inner wall of the knob is also provided with a reset arc-shaped boss, two ends of the reset arc-shaped boss are respectively connected with the locking positioning through groove and the unlocking positioning through groove, the reset arc-shaped boss and the messy code arc-shaped boss are arranged in a vertically staggered mode, and the reset arc-shaped boss protrudes inwards to form the messy code arc-shaped boss; the limiting pin can be matched on the pushing block in a vertically movable mode, and the pushing block is also matched with a limiting pin reset spring for driving the limiting pin to reset; the limiting pin is in sliding fit with the reset arc-shaped boss; when the automatic code-disorder coded lock is unlocked, the knob is rotated in the forward direction, and the limiting pin moves from the locking positioning through groove to the unlocking positioning through groove through the reset arc-shaped boss; when the limiting pin moves in the process of resetting the arc-shaped boss, the knob drives the mandrel to rotate at least one circle through the transmission mechanism; the outer wall of the jth main bushing is provided with a jth+1 password lug which is movably abutted against the jth+1 positioning lug, and j is an integer from 1 to n-1; the outer wall of the first auxiliary bushing is provided with a first password lug which is movably abutted against the first positioning lug; when each bushing component moves to a locking position or a messy code position, the first positioning convex block to the n positioning convex block and the first code convex block to the n code convex block are completely misplaced; when the limiting pin is abutted against the reset arc-shaped boss, each bushing assembly moves to a reset position, at the moment, the ith auxiliary bushing through groove is meshed with the ith mandrel lug, the ith main bushing through groove is meshed with the (i+1) th mandrel lug, the ith main bushing is separated from the meshing with the ith character wheel, the ith cipher lug is opposite to the ith positioning lug, and the first positioning lug to the nth positioning lug and the first messy code lug to the nth messy code lug are completely misplaced.

The knob is internally matched with a rotatable lock cylinder, and a lock cylinder hole is formed in the panel corresponding to the lock cylinder; the outer wall of the nth main bushing is provided with an (n+1) th password bump; the knob is also matched with a code searching piece which is matched with the lock cylinder in a linkage way, the code searching piece is provided with a first clamping part to an nth clamping part which move up and down along with the rotation of the lock cylinder, and the ith clamping part is movably abutted against the (i+1) th password lug; the positions of the (i+1) th cipher lug and the (i) th main bushing through groove are set as follows: when the i+1 cipher lug and the i clamping part are abutted against the clamping position, the i main bushing through groove is aligned with the i+1 mandrel lug.

The reset arc-shaped boss is positioned above the messy code arc-shaped boss, two ends of the reset arc-shaped boss are respectively connected with the locking positioning through groove and the unlocking positioning through groove through a first inclined guide surface and a second inclined guide surface, two ends of the messy code arc-shaped boss are respectively connected with the locking positioning through groove and the unlocking positioning through groove through a first inclined push surface and a second inclined push surface, and an inclined downward-inclined guide inclined surface is formed on the lower side of one end of the reset arc-shaped boss, which is close to the unlocking positioning through groove; and the limiting pin reset spring is used for driving the limiting pin to move upwards.

When the automatic code-disorder coded lock is unlocked, the knob is rotated positively, and the limiting pin moves from the locking positioning through groove to the unlocking positioning through groove through the code-disorder arc-shaped boss.

The two ends of the messy code arc-shaped boss are respectively connected with the locking positioning through groove and the unlocking positioning through groove through a first inclined pushing surface and a second inclined pushing surface, a convex stop block is formed at one end of the messy code arc-shaped boss close to the locking positioning through groove, a first stop block inclined surface connected with the first inclined pushing surface is formed at one end of the stop block close to the locking positioning through groove, and a second stop block inclined surface inclined downwards in an inclined manner is formed at the lower side of the stop block; the limiting pin can be matched on the pushing block in a vertically movable mode, and the pushing block is also matched with a limiting pin reset spring for driving the limiting pin to reset, and the limiting pin reset spring is used for driving the limiting pin to move.

The outer side of the pushing block is provided with a sliding groove, the limiting pin can move up and down and slide in the sliding groove, and the upper end and the lower end of the limiting pin reset spring respectively lean against the bottom of the limiting pin and the bottom wall of the sliding groove.

The knob is internally matched with a rotatable lock cylinder, and a lock cylinder hole is formed in the panel corresponding to the lock cylinder; the outer wall of the ith main bushing is provided with an (i+1) th password bump; the knob is also matched with a code searching piece which is matched with the lock cylinder in a linkage way, the code searching piece is provided with a first clamping part to an nth clamping part which move up and down along with the rotation of the lock cylinder, and the ith clamping part is respectively movably abutted against the clamping position with the (i+1) th password lug; the positions of the (i+1) th password lug and the (i) th main bushing through groove are set as follows: when the i+1 cipher lug and the i clamping part are abutted against the clamping position, the i main bushing through groove is aligned with the i+1 mandrel lug.

The character wheel assembly is matched in a character wheel box, the limiting pin penetrates out of the character wheel box, the second end of the character wheel shaft penetrates out of the character wheel box, and the top of the character wheel box is opened; the middle part of the code searching piece is propped against the bottom of the character wheel box, and one side of the code searching piece is provided with a first clamping part to an nth clamping part which are upwards tilted; a baffle plate which extends out of the character wheel box and can move up and down is arranged on the other side of the code searching piece; a code searching reset spring for driving the baffle plate to move downwards is arranged between the other side of the code searching part and the character wheel box; the lock cylinder is matched with a cam block, the top of the cam block is provided with an inclined first cam surface, and the first cam surface is in sliding fit with the bottom surface of the baffle.

The outer wall of the ith character wheel is provided with a plurality of ith character wheel positioning grooves corresponding to character codes of the ith character wheel; the character wheel box is internally matched with a positioning sheet, n elastic claws are arranged on the positioning sheet, the n elastic claws are sequentially from a first elastic claw to an n elastic claw, and the i elastic claw is movably embedded with each i character wheel positioning groove of the i character wheel.

The unlocking positioning through groove is arranged as follows: when the limiting pin is embedded in the unlocking positioning through groove, the ith auxiliary bushing through groove is meshed with the ith mandrel lug, the ith main bushing through groove is meshed with the (i+1) th mandrel lug, the first positioning lug to the nth positioning lug and the first messy code lug to the nth messy code lug are all dislocated completely, and the ith main bushing is separated from the meshing with the ith character wheel.

The unlocking positioning through groove is matched with a movable password changing button, the outer end of the password changing button penetrates out of the knob, and the inner end of the password changing button is movably abutted against the limiting pin.

The transmission mechanism comprises an arc-shaped convex wall arranged in the knob and a transmission gear arranged on the second end of the mandrel, the arc-shaped convex wall is arranged concentrically with the knob, the upper end surface of the arc-shaped convex wall is provided with a plurality of transmission teeth along the circumferential direction of the arc-shaped convex wall, and the transmission gear is connected with the second end of the mandrel and is movably meshed with each transmission tooth.

The bottom of the knob is matched with a lock core tail, and a lock tongue is matched on the lock core tail; the fixing seat is provided with a through hole for the lock core tail to pass through, the fixing seat is fixedly connected with the panel through a screw penetrating through the knob, and the bottom wall of the knob is provided with a sliding hole for the screw to slide.

The knob is internally matched with a rotatable lock cylinder, and a lock cylinder hole is formed in the panel corresponding to the lock cylinder; a sector gear is arranged on the lock cylinder; the upper part of the lock core tail is rotatably matched with the bottom of the knob, and a driven gear which is movably matched with the sector gear is arranged on the upper part of the lock core tail; a limit groove is formed in the side wall of the upper part of the lock core tail; the inner bottom wall of the knob is matched with a rotatable swing arm and a swing arm reset piece for driving the swing arm to reset; the swing arm both ends divide into buckling end and company's movable end, and the buckling end is equipped with the buckling part with spacing groove activity lock, company's movable end and lock core interlock, and the buckling part of swing arm rotates along with the lock core and buckles spacing groove or break away from with the lock of spacing groove, and when buckling part break away from with the lock of spacing groove, sector gear and driven gear transmission cooperation.

The lock cylinder is matched with a cam block, the outer wall of the cam block is provided with a second cam surface with the radius gradually expanding along the circumferential direction of the lock cylinder, and the second cam surface is in sliding fit with the side face of the linkage end of the swing arm.

After the scheme is adopted, when the knob is reversely rotated to lock, as the limiting pin drives the mandrel to rotate at least one circle through the transmission mechanism in the moving process of the messy code arc-shaped boss, the through groove of the ith auxiliary bushing is meshed with the ith mandrel lug in the process, the through groove of the ith main bushing is separated from the meshing with the (i+1) th mandrel lug, the ith main bushing is meshed with the ith character wheel, the ith positioning lug is opposite to the ith messy code lug, and thus the ith messy code lug can be abutted against the ith positioning lug by at least one circle of mandrel rotation to drive the ith character wheel and the ith main bushing to rotate, and messy codes are automatically dialed to hide the codes.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is an exploded view of a first embodiment of the present invention;

FIG. 3 is a schematic view 1 of a knob according to a first embodiment of the present invention;

FIG. 4 is a schematic view of a knob according to an embodiment 2;

FIG. 5 is a schematic view of a partial structure of a limiting pin according to a first embodiment of the present invention when the limiting pin is embedded in a locking positioning through slot;

FIG. 6 is a cross-sectional view 1 of a first embodiment of the present invention showing a stop pin engaged in a locking detent channel;

FIG. 7 is a cross-sectional view 2 of a first embodiment of the present invention showing a stop pin engaged in a locking detent channel;

FIG. 8 is a schematic view of a partial structure of a limiting pin in the first embodiment of the present invention when the limiting pin abuts against the reset arc-shaped boss;

FIG. 9 is a cross-sectional view 1 of a first embodiment of the present invention when a stop pin abuts against a reset arc-shaped boss;

FIG. 10 is a cross-sectional view 2 of a first embodiment of the present invention when the stop pin abuts against the reset arc-shaped boss;

FIG. 11 is a cross-sectional view of the first embodiment of the present invention when the limiting pin abuts against the reset arc-shaped boss;

fig. 12 is a schematic view of a partial structure of a limiting pin according to the first embodiment of the present invention when the limiting pin is embedded in an unlocking positioning through slot;

fig. 13 is a cross-sectional view 1 of a first embodiment of the present invention when a stop pin is engaged in an unlocking and positioning through slot;

fig. 14 is a cross-sectional view 2 of the first embodiment of the present invention when the stop pin is embedded in the unlocking and positioning through slot;

fig. 15 is a cross-sectional view 3 of the first embodiment of the present invention when the stop pin is embedded in the unlocking and positioning through slot;

FIG. 16 is a schematic view of a partial structure of a stop pin according to a first embodiment of the present invention when the stop pin abuts against a disorder arc-shaped boss;

FIG. 17 is a cross-sectional view 1 of a stop pin according to a first embodiment of the present invention abutting against a disorder arc-shaped boss;

FIG. 18 is a cross-sectional view 2 of a stop pin according to the first embodiment of the present invention when it abuts against the arc-shaped convex table of the messy code;

FIG. 19 is a schematic view showing a partial structure of a buckling portion for buckling a limiting groove according to a first embodiment of the present invention;

FIG. 20 is a schematic view of a partial structure of the engaging portion of the first embodiment of the present invention when the engaging portion is disengaged from the engaging portion of the limiting groove;

FIG. 21 is an exploded view of a second embodiment of the present invention;

FIG. 22 is a schematic view 1 of a knob according to a second embodiment of the present invention;

FIG. 23 is a schematic view of a knob according to a second embodiment of the invention 2;

FIG. 24 is a schematic view showing a partial structure of a limiting pin of the second embodiment of the present invention when the limiting pin is embedded in a locking positioning through slot;

FIG. 25 is a schematic view of a partial structure of a stop pin abutting against a disorder arc-shaped boss according to a second embodiment of the present invention;

FIG. 26 is a cross-sectional view of a stop pin abutting against a scrambling arc boss according to a second embodiment of the present invention;

fig. 27 is a schematic view of a partial structure of a limiting pin of the second embodiment of the present invention when the limiting pin is embedded in an unlocking positioning through slot;

FIG. 28 is a cross-sectional view of a second embodiment of the present invention showing a stop pin engaged in an unlocking and positioning through slot;

FIG. 29 is a schematic diagram of a partial structure of a second embodiment of the present invention when the password is changed;

FIG. 30 is a cross-sectional view of a second embodiment of the present invention for password modification;

FIG. 31 is a schematic view showing a partial structure of a stop pin according to a second embodiment of the present invention when the stop pin passes through a second inclined surface of the stop block;

FIG. 32 is a cross-sectional view of a stop pin according to a second embodiment of the present invention passing through a second stop ramp;

FIG. 33 is a schematic view of a partial structure of a fastening portion of a second embodiment of the present invention when the fastening portion is fastened to the limiting groove;

fig. 34 is a schematic view of a partial structure of the second embodiment of the present invention when the fastening portion is disengaged from the fastening portion of the limiting groove;

FIG. 35 is an exploded schematic view 1 of the character wheel assembly of the present invention;

FIG. 36 is an exploded view of the character wheel assembly of the present invention, shown in FIG. 2;

FIG. 37 is a schematic view of the engagement of the lock cylinder with the print wheel assembly of the present invention;

FIG. 38 is a schematic view of the structure of the cam block and sector gear of the present invention;

FIG. 39 is a schematic diagram of the password recovery structure of the present invention 1;

FIG. 40 is a schematic diagram of a password retrieving structure according to the present invention;

description of the reference numerals:

a panel 1, a character wheel hole 11, a lock cylinder hole 12,

the character wheel assembly 2, the spindle 20, the first end 201, the locating caulking groove 2011, the second end 202,

a first mandrel tab 203, a second mandrel tab 204, a third mandrel tab 205, a fourth mandrel tab 206, a fifth mandrel tab 207,

the first bushing assembly 21, the first secondary bushing 211, the first secondary bushing through slots 2111, the first code lugs 2112, the first code lugs 2113, the first primary bushing 212, the first axial insert 2121, the first primary bushing through slots 2122, the second code lugs 2123,

The second bushing assembly 22, the second secondary bushing 221, the second secondary bushing through slot 2211, the second code-mixing boss 2212, the second primary bushing 222, the second axial insert 2221, the second primary bushing through slot 2222, the third code-mixing boss 2223,

third bushing assembly 23, third bushing assembly 231, third bushing through slot 2311, third code tab 2312, third main bushing 232, third axial slug 2321, third main bushing through slot 2322, fourth code tab 2323,

the fourth bushing assembly 24, the fourth sub-bushing 241, the fourth sub-bushing channel 2411, the fourth code protrusions 2412, the fourth main bushing 242, the fourth axial insert 2421, the third main bushing channel 2422, the fifth code protrusions 2423,

the first character wheel 25, the first axial caulking groove 251, the first positioning projection 252, the first character wheel positioning groove 253,

the second character wheel 26, the second axial caulking groove 261, the second positioning projection 262, the second character wheel positioning groove 263,

the third character wheel 27, the third axial caulking groove 271, the third positioning projection 272, the third character wheel positioning groove 273,

fourth print wheel 28, fourth axial slot 281, fourth positioning tab 282, fourth print wheel positioning slot 283,

the character wheel cartridge 29, the positioning tab 291, the first elastic claw 2911, the second elastic claw 2912, the third elastic claw 2913, the fourth elastic claw 2914,

Knob 3, slide hole 31, lock positioning through groove 32, unlock positioning through groove 33, via hole 331, password changing button 332, messy code arc boss 34, first inclined pushing surface 341, second inclined pushing surface 342, stopper 343, first stopper inclined surface 3431, second stopper inclined surface 3432, reset arc boss 35, first inclined guiding surface 351, second inclined guiding surface 352, guiding inclined surface 353, swing arm 36, engagement end 361, engagement portion 3611, engagement end 362, swing arm resetting member 37,

lock core tail 4, lock tongue 41, driven gear 42, transition gear 43, limit groove 44, fixing seat 5, perforation 51, stud 52, nut 53,

push block 6, chute 60, limit pin 61, limit pin return spring 62,

the transmission mechanism 7, the arc convex wall 71, the transmission tooth 711, the transmission gear 72,

the lock cylinder 8, the panic key 81, the cam block 82, the first cam surface 821, the second cam surface 822, the sector gear 83,

the code searching piece 9, the first clamping part 91, the second clamping part 92, the third clamping part 93, the fourth clamping part 94, the baffle 95, the code searching return spring 96,

the number of screws s, screws d,

a first return spring T1 and a second return spring T2.

Detailed Description

In order to further explain the technical scheme of the invention, the invention is explained in detail by specific examples.

Embodiment one:

as shown in fig. 1 to 20 and fig. 35 to 40, in a first embodiment of the present invention, an automatic code-scrambling coded lock includes a panel 1, a character wheel assembly 2, a knob 3 and a fixing base 5; the knob 3 is rotatably matched between the panel 1 and the fixed seat 5, the top of the knob 3 is opened, the knob 3 can be matched with a lock tongue 41, and the character wheel assembly 2 is arranged in the knob 3.

Specifically, in the first embodiment of the present invention, as shown in fig. 2 to 4, the bottom of the knob 3 is matched with a lock core tail 4, the lock core tail 4 is matched with a lock tongue 41, and the lock tongue 41 can be locked on the lock core tail 4 through a screw s; the fixing seat 5 can be provided with a stud 52 matched with a nut 53 for connecting the fixing seat 5 with a door plate; the fixing seat 5 is provided with a through hole 51 for the lock core tail 4 to pass through, and the through hole 51 can be formed in the stud 52, namely the stud 52 is of a hollow structure; the fixed seat 5 is fixedly connected with the panel 1 through a screw d penetrating through the knob 3, and a sliding hole 31 for the screw d to slide is formed in the bottom wall of the knob 3, so that the knob 3 can rotate relative to the panel 1 and the fixed seat 5.

In the first embodiment of the present invention, as shown in fig. 5 to 18 and fig. 35 and 36, the character wheel assembly 2 includes a spindle 20, n bushing assemblies movably sleeved on the spindle 20, and n character wheels respectively sleeved on the bushing assemblies, where n is an integer greater than or equal to 2, and in the first embodiment of the present invention, n is four as an example; the two ends of the mandrel 20 are divided into a first end 201 and a second end 202, and the four character wheels are sequentially divided into a first character wheel 25, a second character wheel 26, a third character wheel 27 and a fourth character wheel 28 along the direction from the first end 201 to the second end 202 of the mandrel 20; the bushing assemblies are abutted against each other, and the four bushing assemblies are sequentially divided into a first bushing assembly 21, a second bushing assembly 22, a third bushing assembly 22 and a fourth bushing assembly 23 along the direction from the first end 201 to the second end 202 of the mandrel 20; each bushing assembly comprises two bushings sleeved on the mandrel 20 and abutted against each other, the two bushings of the first bushing assembly 21 are sequentially divided into a first auxiliary bushing 211 and a first main bushing 212 along the direction from the first end to the second end of the mandrel 20, a first main bushing through groove 2122 is formed in the inner wall of the first main bushing 212, and a first auxiliary bushing through groove 2111 is formed in the inner wall of the first auxiliary bushing 211; the first character wheel 25 is movably sleeved with a first auxiliary bushing 211 and a first main bushing 212, a plurality of first axial caulking grooves 251 which are distributed at equal intervals are formed in the inner wall of the first character wheel 25, and first axial caulking blocks 2121 which are movably meshed with the first axial caulking grooves 251 are formed in the outer wall of the first main bushing 212 so that the first main bushing 212 is movably meshed with the first character wheel 25; the two bushings of the second bushing assembly 22 are sequentially divided into a second auxiliary bushing 221 and a second main bushing 222 along the direction from the first end 201 to the second end 202 of the mandrel 20, a second main bushing through groove 2222 is formed in the inner wall of the second main bushing 222, and a second auxiliary bushing through groove 2211 is formed in the inner wall of the second auxiliary bushing 221; the second character wheel 26 is movably sleeved with a second auxiliary bushing 221 and a second main bushing 222, a plurality of second axial caulking grooves 261 are formed in the inner wall of the second character wheel 26 at equal intervals, and second axial caulking blocks 2221 which are movably meshed with the second axial caulking grooves 261 are formed in the outer wall of the second main bushing 222 so that the second main bushing 222 is movably meshed with the second character wheel 26; the two bushings of the third bushing assembly 23 are sequentially divided into a third auxiliary bushing 231 and a third main bushing 232 along the direction from the first end 201 to the second end 202 of the mandrel 20, a third main bushing through groove 2323 is formed in the inner wall of the third main bushing 232, and a third auxiliary bushing through groove 2311 is formed in the inner wall of the third auxiliary bushing 231; the third character wheel 27 is movably sleeved with a third auxiliary bushing 231 and a third main bushing 232, a plurality of third axial caulking grooves 271 which are distributed at equal intervals are formed in the inner wall of the third character wheel 27, and third axial caulking blocks 2321 which are movably meshed with the third axial caulking grooves 271 are formed in the outer wall of the third main bushing 232 so that the third main bushing 232 is movably meshed with the third character wheel 27; the two bushings of the fourth bushing assembly 24 are sequentially divided into a fourth auxiliary bushing 241 and a fourth main bushing 242 along the direction from the first end 201 to the second end 202 of the mandrel 20, a fourth main bushing through groove 2424 is formed in the inner wall of the fourth main bushing 242, and a fourth auxiliary bushing through groove 2411 is formed in the inner wall of the fourth auxiliary bushing 241; the fourth character wheel 28 is movably sleeved with a fourth auxiliary bushing 241 and a fourth main bushing 242, a plurality of fourth axial caulking grooves 281 are distributed on the inner wall of the fourth character wheel 28 at equal intervals, and a fourth axial caulking block 2421 which is movably meshed with each fourth axial caulking groove 281 is arranged on the outer wall of the fourth main bushing 242 so that the fourth main bushing 242 is movably meshed with the fourth character wheel 28.

In the first embodiment of the present invention, as shown in fig. 5 to 18 and fig. 35 and 36, four character wheel holes 11 for inserting the first character wheel 25, the second character wheel 26, the third character wheel 27 and the fourth character wheel 28 are formed in the panel 1 to position the first character wheel 25, the second character wheel 26, the third character wheel 27 and the fourth character wheel 28; the inner wall of the first character wheel 25 is also provided with a first positioning lug 252, the inner wall of the second character wheel 26 is also provided with a second positioning lug 262, the inner wall of the third character wheel 27 is also provided with a third positioning lug 272, and the inner wall of the fourth character wheel 28 is also provided with a fourth positioning lug 282; the outer wall of the first auxiliary bushing 211 is provided with a first messy code protrusion 2112 which is movably abutted against the first positioning protrusion 252 and a first password protrusion 2113 which is movably abutted against the first positioning protrusion 252, the outer wall of the second auxiliary bushing 221 is provided with a second messy code protrusion 2212 which is movably abutted against the second positioning protrusion 262, the outer wall of the third auxiliary bushing 231 is provided with a third messy code protrusion 2312 which is movably abutted against the third positioning protrusion 272, and the outer wall of the fourth auxiliary bushing 241 is provided with a fourth messy code protrusion 2412 which is movably abutted against the fourth positioning protrusion 282; the outer wall of the first main bushing 212 is further provided with a second password bump 2123 that is movably abutted against the second positioning bump 262, the outer wall of the second main bushing 222 is further provided with a third password bump 2223 that is movably abutted against the third positioning bump 272, and the outer wall of the third main bushing 232 is further provided with a fourth password bump 2323 that is movably abutted against the fourth positioning bump 282.

In the first embodiment of the present invention, as shown in fig. 5 to 18 and fig. 35 and 36, the first end 201 of the mandrel 20 is fitted with a push block 6 that can move along the axial direction of the mandrel 20, the inner side of the push block 6 abuts against the first auxiliary bushing 221 so that the movement of the push block 6 can push each bushing assembly to move toward the second end 202 of the mandrel 20, a first return spring T1 for driving the push block 6 to return is disposed between the push block 6 and the first end 201 of the mandrel 20, the push block 6 can be sleeved on the first end 201 of the mandrel 20, a positioning caulking groove 2011 can be formed on the first end 201 of the mandrel 20, and the first return spring T1 is inserted into the positioning caulking groove 2011 and two ends of the first return spring T1 abut against the positioning caulking groove 2011 and the push block 6 respectively. A limiting pin 61 capable of moving up and down and a limiting pin reset spring 62 for driving the limiting pin 61 to reset are matched on the outer side of the push block 6; a second return spring T2 is arranged between the second end 202 of the mandrel 20 and the fourth main bushing 242, so that each bushing assembly is driven by the second return spring T2 to return after being pushed by the push block 6 to move towards the second end 202 of the mandrel 20; five mandrel protrusions are sequentially arranged on the mandrel 20 along the direction from the first end 201 to the second end 202 of the mandrel 20 in a linear arrangement, and the five mandrel protrusions are sequentially divided into a first mandrel protrusion 203, a second mandrel protrusion 204, a third mandrel protrusion 205, a fourth mandrel protrusion 206 and a fifth mandrel protrusion 207 along the direction from the first end 201 to the second end 202 of the mandrel 20; the first main bushing through groove 2122 of the first main bushing 212 is movably engaged with the second spindle bump 204, the second main bushing through groove 2222 of the second main bushing 222 is movably engaged with the third spindle bump 205, the third main bushing through groove 2322 of the third main bushing 232 is movably engaged with the fourth spindle bump 206, the fourth main bushing through groove 2422 of the fourth main bushing 242 is movably engaged with the fifth spindle bump 207, the first sub-bushing through groove 2111 of the first sub-bushing 211 is engaged with the first spindle bump 203, the second sub-bushing through groove 2211 of the second sub-bushing 221 is engaged with the second spindle bump 204, the third sub-bushing through groove 2311 of the third sub-bushing 231 is engaged with the third spindle bump 205, and the fourth sub-bushing through groove 2411 of the fourth sub-bushing 241 is engaged with the fourth spindle bump 206. When the first, second, third, and fourth print wheels 25, 26, 27, and 28 are all in the correct password position, the first, second, third, and fourth main bushing channels 2121, 2221, 2321, and 2421, and the first, second, third, and fourth sub bushing channels 2111, 2211, 2311, and 2411 are aligned with the respective spindle lugs of the spindle 20 such that the respective bushing assemblies are axially movable along the spindle 20 to enable rotation of the knob 3 for unlocking operations.

In the first embodiment of the present invention, as shown in fig. 3 and fig. 4, the inner wall of the knob 3 is provided with a locking positioning through groove 32, an unlocking positioning through groove 33, a messy code arc boss 34 and a reset arc boss 35, the reset arc boss 35 and the messy code arc boss 34 are arranged in a vertically staggered manner, the reset arc boss 35 protrudes the messy code arc boss 34 inwards, two ends of the reset arc boss 35 are respectively engaged with the locking positioning through groove 32 and the unlocking positioning through groove 33, two ends of the messy code arc boss 34 are respectively engaged with the locking positioning through groove 32 and the unlocking positioning through groove 33, and the limiting pin 61 is in sliding fit with the locking positioning through groove 32, the reset arc boss 35, the unlocking positioning through groove 33 and the messy code arc boss 34; when the automatic code-disorder coded lock is unlocked, the knob 3 is rotated positively, and the limiting pin 61 moves from the locking positioning through groove 32 to the unlocking positioning through groove 33 through the reset arc-shaped projection 35; when the automatic code-disorder coded lock is locked, the knob 3 is reversely rotated, and the limiting pin 61 moves from the unlocking positioning through groove 33 to the locking positioning through groove 32 through the code-disorder arc-shaped boss 34. The reset arc-shaped boss 35 may be located above the messy code arc-shaped boss 34, two ends of the reset arc-shaped boss 35 are respectively engaged with the locking positioning through groove 32 and the unlocking positioning through groove 33 through a first inclined guide surface 351 and a second inclined guide surface 352, two ends of the messy code arc-shaped boss 34 are respectively engaged with the locking positioning through groove 32 and the unlocking positioning through groove 33 through a first inclined push surface 341 and a second inclined push surface 342, and an inclined guiding inclined surface 353 is formed on the lower side of one end, adjacent to the unlocking positioning through groove 33, of the reset arc-shaped boss 35; a chute 60 is arranged on the outer side of the push block 6, the limiting pin 61 is slidably connected in the chute 60 in a vertically movable manner, and the upper end and the lower end of the limiting pin return spring 62 respectively abut against the bottom of the limiting pin 61 and the bottom wall of the chute 60 to drive the limiting pin 61 to move upwards; thus, through the first inclined guide surface 351, the knob 3 is rotated forward, so that the limiting pin 61 can move from the locking positioning through groove 32 to the reset arc-shaped boss 35; and by the second inclined pushing surface 342 and the guide inclined surface 353, the knob 3 is reversely rotated, so that the limit pin 61 can move from the unlocking positioning through groove 33 to the messy code arc-shaped boss 34.

In the first embodiment of the present invention, as shown in fig. 5 to 7, when the stopper pin 61 is engaged in the locking positioning groove 32, each of the bushing components moves to the locking position, and at this time, the first, second, third and fourth sub-bushing grooves 2111, 2211, 2311 and 2411 are engaged with the first, second, third and fourth spindle bumps 203, 204, 205 and 206, respectively, the first main bushing groove 2121 is disengaged from the second spindle bump 204, the second main bushing groove 2221 is disengaged from the third spindle bump 205, the third main bushing groove 2321 is disengaged from the fourth spindle bump 206, the fourth main bushing groove 2421 is disengaged from the fifth spindle bump 207, the first main bushing 212 is engaged with the first word wheel 25, the second main bushing 222 is engaged with the second word wheel 26, the third main bushing 232 is engaged with the third word wheel 27, the fourth main bushing 242 is engaged with the fourth word wheel 28, the first, second, 2123, 272, third 282, and second, third 282, and fourth positioning bumps 2112, 262, and 252 are completely positioned with the fourth positioning bumps 2112, 262 and 252; 8-11, when the limiting pin 61 abuts against the reset arc-shaped boss 35, each bushing assembly moves to the reset position, at this time, the first secondary bushing through groove 2111, the second secondary bushing through groove 2211, the third secondary bushing through groove 2311 and the fourth secondary bushing through groove 2411 are respectively engaged with the first spindle boss 203, the second spindle boss 204, the third spindle boss 205 and the fourth spindle boss 206, the first primary bushing through groove 2121 is engaged with the second spindle boss 204, the second primary bushing through groove 2221 is engaged with the third spindle boss 205, the third primary bushing through groove 2321 is engaged with the fourth spindle boss 206, the fourth primary bushing through groove 2421 is engaged with the fifth spindle boss 207, the first primary bushing 212 is disengaged from the first character wheel 25, the second primary bushing 222 is disengaged from the second character wheel 26, the third primary bushing 232 is disengaged from the third character wheel 27, the fourth primary bushing 242 is disengaged from the fourth character wheel 206, the first cipher boss 2113 is engaged with the first positioning boss 252, the second positioning boss 272 is disengaged from the third positioning boss 262, the third positioning boss 272 is fully disengaged from the fourth positioning boss 262, the fourth positioning boss 2222 is disengaged from the fourth positioning boss 272 is disengaged from the fourth positioning boss 262, and the fourth positioning boss 2 is fully disengaged from the positioning boss 272 and the fourth positioning boss 2 is fully disengaged from the positioning boss 2; 12-15, when the limiting pin 61 is engaged in the unlocking position through groove 33, each bushing assembly moves to the unlocking position, at this time, the first auxiliary bushing through groove 2111, the second auxiliary bushing through groove 2211, the third auxiliary bushing through groove 2311 and the fourth auxiliary bushing through groove 2411 are respectively engaged with the first spindle lug 203, the second spindle lug 204, the third spindle lug 205 and the fourth spindle lug 206, the first main bushing through groove 2121 is engaged with the second spindle lug 204, the second main bushing through groove 2221 is engaged with the third spindle lug 205, the third main bushing through groove 2321 is engaged with the fourth spindle lug 206, the fourth main bushing through groove 2421 is engaged with the fifth spindle lug 207, the first main bushing 212 is disengaged from the first character wheel 25, the second main bushing 222 is disengaged from the second character wheel 26, the third main bushing 232 is disengaged from the third character wheel 27, the fourth main bushing 242 is disengaged from the fourth character wheel 28, the first code lug 3, the second code lug 2123, the third code lug 272, the third code boss 282, the fourth code boss 262, the fourth code boss 2112 and the fourth code boss 2112 are completely dislocated with the third spindle lug 272, the fourth code boss 262, the fourth code boss 2112 and the fourth code boss 2112 are completely dislocated with the fourth spindle lug 206; 16-18, when the stop pin 61 abuts against the messy-code arc-shaped boss 34, each bushing assembly moves to the messy-code position, at this time, the first auxiliary bushing through groove 2111, the second auxiliary bushing through groove 2211, the third auxiliary bushing through groove 2311 and the fourth auxiliary bushing through groove 2411 are respectively engaged with the first spindle boss 203, the second spindle boss 204, the third spindle boss 205 and the fourth spindle boss 206, the first main bushing through groove 2121 is disengaged from the engagement with the second spindle boss 204, the second main bushing through groove 2221 is disengaged from the engagement with the third spindle boss 205, the third main bushing through groove 2321 is disengaged from the engagement with the fourth spindle boss 206, the fourth main bushing through groove 2421 is disengaged from the engagement with the fifth spindle boss 207, the first main bushing 212 is engaged with the first character wheel 25, the second main bushing 222 is engaged with the second character wheel 26, the third main bushing 232 is engaged with the third spindle boss 204, the fourth main bushing 242 is engaged with the fourth character wheel 28, the first code boss 2123, the second code boss 2123, the third code boss 272 and the fourth code boss 262 are positioned opposite to the fourth positioning boss 2112, the fourth positioning boss 2113, the fourth positioning boss 272 and the fourth positioning boss 262 are positioned opposite to the fourth positioning boss 2112, and the fourth positioning boss 262 are positioned opposite to the fourth positioning boss 2112.

In the first embodiment of the present invention, as shown in fig. 2 to 18, a transmission mechanism 7 is disposed between the knob 3 and the second end 202 of the mandrel 20, the rotation of the knob 3 drives the mandrel 20 to rotate around the central rotation axis of the mandrel 20 through the transmission mechanism 7, the transmission mechanism 7 may include an arc-shaped convex wall 71 disposed in the knob 3 and a transmission gear 72 disposed on the second end 202 of the mandrel 20, the arc-shaped convex wall 71 is connected to the knob 3 and concentrically disposed, the upper end surface of the arc-shaped convex wall 71 is provided with a plurality of transmission teeth 711, and the transmission gear 72 is connected to the second end 202 of the mandrel 20 and movably engaged with each transmission tooth 711, so that the mandrel 20 can be driven to rotate around the central rotation axis when the knob 3 rotates; the arc-shaped convex wall 71 and the knob 3 can be integrally formed, and the transmission gear 72 and the mandrel 20 can be integrally formed.

In a first embodiment of the present invention, the unlocking process of the automatic code disorder password is: first, the first character wheel 25, the second character wheel 26, the third character wheel 27 and the fourth character wheel 28 are shifted to enable the first character wheel 25, the second character wheel 26, the third character wheel 27 and the fourth character wheel 28 to be in correct password positions; then, the knob 3 is rotated forward to enable the limiting pin 61 to move from the locking positioning through groove 32 to enter the unlocking positioning through groove 33 through the reset arc-shaped boss 35, so that the lock cylinder tail 4 and the lock tongue 41 are rotated forward to unlock; in the process of moving the reset arc-shaped boss 35, the knob 3 drives the spindle 20 to rotate forward at least one circle through the transmission mechanism 7, so that the spindle 20 drives the first auxiliary bushing 211, the first main bushing 212, the second auxiliary bushing 221, the second main bushing 222, the third auxiliary bushing 231, the third main bushing 232, the fourth auxiliary bushing 241 and the fourth main bushing 242 to rotate forward at least one circle, so that the first password bump 2113 and the first positioning bump 252 collide with each other to drive the first character wheel 25 to rotate to the first character wheel password reset position, the second password bump 2123 and the second positioning bump 262 collide with each other to drive the second character wheel 26 to rotate to the second character wheel password reset position, the third password bump 2223 and the third positioning bump 272 collide with each other to drive the third character wheel 27 to rotate to the third character wheel password reset position, and the fourth password bump 2133 and the fourth positioning bump 282 collide with each other to drive the fourth character wheel 28 to rotate to the fourth character wheel password reset position, thereby realizing password reset.

In a first embodiment of the present invention, the locking process of the automatic code disorder password is: the knob 3 is reversely rotated to enable the limiting pin 61 to move from the unlocking positioning through groove 33 to enter the locking positioning through groove 32 through the messy code arc-shaped boss 34, so that the lock cylinder tail 4 and the lock tongue 41 reversely rotate to lock; in the process that the limiting pin 61 moves on the messy-code arc-shaped boss 34, the knob 3 drives the mandrel 20 to reversely rotate at least one circle through the transmission mechanism 7, so that the mandrel 20 drives the first auxiliary bushing 211, the second auxiliary bushing 221, the third auxiliary bushing 231 and the fourth auxiliary bushing 241 to reversely rotate at least one circle, so that the first messy-code protrusion 2112 collides with the first positioning protrusion 252 to drive the first character wheel 25 and the first main bushing 212 to rotate to the first character wheel messy-code position, the second messy-code protrusion 2212 collides with the second positioning protrusion 262 to drive the second character wheel 26 and the second main bushing 222 to rotate to the second character wheel messy-code position, the third messy-code protrusion 2312 collides with the third positioning protrusion 272 to drive the third character wheel 27 and the third main bushing 232 to rotate to the third character wheel messy-code position, and the fourth positioning protrusion 2412 collides with the fourth positioning protrusion 282 to drive the fourth character wheel 28 and the fourth main bushing 242 to rotate to the fourth character wheel messy-code position, thereby hiding the password protrusion 2412. In the first embodiment of the present invention, when the first, second, third and fourth character wheels 25, 26, 27 and 28 are rotated to the first, second, third and fourth character wheel reset positions, respectively, the first, second, third and fourth character wheels 25, 26, 27 and 28 may each display a number "0" in each of the character wheel holes 11; and when the first, second, third and fourth character wheels 25, 26, 27 and 28 are rotated to the first, second, third and fourth character wheel scrambling positions, respectively, the first, second, third and fourth character wheels 25, 26, 27 and 28 may each display a number "1" in each of the character wheel holes 11.

In the first embodiment of the present invention, as shown in fig. 12 to 15, when the automatic code-scrambling code is in the unlocking state, that is, when the stop pin 61 is engaged in the unlocking positioning through groove 33, the first main bushing through groove 2121 is engaged with the second spindle lug 204, the second main bushing through groove 2221 is engaged with the third spindle lug 205, the third main bushing through groove 2321 is engaged with the fourth spindle lug 206, the fourth main bushing through groove 2421 is engaged with the fifth spindle lug 207, the first main bushing 212 is disengaged from the first word wheel 25, the second main bushing 222 is disengaged from the second word wheel 26, the third main bushing 232 is disengaged from the third word wheel 27, the fourth main bushing 242 is disengaged from the fourth word wheel 28, and the first word wheel 25, the second word wheel 26, the third word wheel 27 and the fourth word wheel 28 can be rotated for code exchange.

Further, in the first embodiment of the present invention, as shown in fig. 1, 2 and 35 to 40, a rotatable lock cylinder 8 may be fitted in the knob 3, and the lock cylinder 8 may be fitted with an emergency key 81 to rotate the lock cylinder 8 by the emergency key 81; a lock cylinder hole 12 is arranged on the panel 1 corresponding to the lock cylinder 8 so as to facilitate the insertion of an emergency key 81 into the lock cylinder 8; a fifth code bump 2423 is further disposed on the outer wall of the fourth main bushing 242; the knob 3 is matched with a code searching member 9 which is in linkage fit with the lock cylinder 8, the code searching member 9 is provided with a first clamping part 91, a second clamping part 92, a third clamping part 93 and a fourth clamping part 94 which move up and down along with the rotation of the lock cylinder 8, and the first clamping part 91, the second clamping part 92, the third clamping part 93 and the fourth clamping part 94 are respectively in movable abutting joint with a second code bump 2123, a third code bump 2223, a fourth code bump 2323 and a fifth code bump 2423; and the second code bump 2123 and the first main bushing through groove 2122 are positioned such that: when the second code bump 2123 abuts against the first clamping portion 91, the first main bushing through groove 2122 is aligned with the second mandrel bump 204; the positions of the third code projection 2223 and the second main bushing through slot 2222 are set as follows: when the third code projection 2223 abuts against the second clamping portion 92, the second main bushing through slot 2222 is aligned with the third spindle projection 205; the fourth code cam 2323 and the third main bushing through slot 2322 are located as follows: when the fourth code cam 2323 abuts against the third clamping portion 93, the third main bushing through slot 2322 is aligned with the fourth spindle cam 206; the fifth code cam 2423 and the fourth main bushing through slot 2422 are positioned to: when the fifth code bump 2423 and the fourth clamping portion 94 are abutted against each other, the fourth main bushing through groove 2422 is aligned with the fifth spindle bump 205. Thus, when the user forgets the password, the first clamping portion 91, the second clamping portion 92, the third clamping portion 93 and the fourth clamping portion 94 can be moved up to the code searching position by rotating the lock cylinder 8, so that the first clamping portion 91 can collide with the second password bump 2123, the second clamping portion 92 can collide with the third password bump 2223, the third clamping portion 93 can collide with the fourth password bump 2323 and the fourth clamping portion 94 can collide with the fifth password bump 2423; then, the first word wheel 25 is rotated to drive the first main bushing 212 to rotate to the first clamping portion 91 to abut against the second password bump 2123, the second word wheel 26 is rotated to drive the second main bushing 222 to rotate to the second clamping portion 92 to abut against the third password bump 2223, the third word wheel 27 is rotated to drive the third main bushing 232 to rotate to the third clamping portion 93 to abut against the fourth password bump 2323, and the fourth word wheel 28 is rotated to drive the fourth main bushing 242 to rotate to the fourth clamping portion 94 to abut against the fifth password bump 2423; at this time, the characters displayed by the first character wheel 25, the second character wheel 26, the third character wheel 27 and the fourth character wheel 28 in the character wheel holes 11 are correct codes, so that code recovery is realized. Wherein the wheel assembly 2 can be matched in a wheel box 29, the limiting pin 61 penetrates out of the wheel box 29, the second end 202 of the wheel axle 20 penetrates out of the wheel box 29, the top of the wheel box 29 is opened, and two ends of the second return spring T2 respectively abut against the fourth main bushing 242 and the side wall of the wheel box 29 adjacent to the second end 202 of the wheel axle 20; the middle part of the code searching piece 9 abuts against the bottom of the character wheel box 29, and one side of the code searching piece 9 is provided with a first clamping part 91, a second clamping part 92, a third clamping part 93 and a fourth clamping part 94 which are tilted upwards; a baffle 95 which extends out of the character wheel box 29 and can move up and down is arranged on the other side of the code searching piece 9; a code searching reset spring 96 for driving the baffle 95 to move downwards is arranged between the other side of the code searching part 9 and the character wheel box 29; the lock cylinder 8 is matched with a cam block 82, the cam block 82 can be locked on the bottom of the lock cylinder 8 through a screw d, the top of the cam block 82 is provided with an inclined first cam surface 821, and the first cam surface 821 is in sliding fit with the bottom surface of the baffle 95; by the cooperation of the first cam surface 821 and the bottom surface of the baffle 95, the baffle 95 of the code searching member 9 can be driven to move up and down when the lock cylinder 8 rotates, and then the first clamping portion 91, the second clamping portion 92, the third clamping portion 93 and the fourth clamping portion 94 can move up and down. As shown in fig. 35 to 40, the print wheel box 29 is internally provided with a positioning piece 291, the positioning piece 291 is provided with four elastic claws, the four elastic claws are sequentially a first elastic claw 2911, a second elastic claw 2912, a third elastic claw 2913 and a fourth elastic claw 2914, and the outer wall of the first print wheel 25 is provided with a plurality of first print wheel positioning grooves 253 corresponding to the character codes of the first print wheel 25; the outer wall of the second character wheel 26 is provided with a plurality of second character wheel positioning grooves 263 corresponding to character codes of the second character wheel 26; a plurality of third character wheel positioning grooves 273 are formed in the outer wall of the third character wheel 27 and correspond to character codes of the third character wheel 27; the outer wall of the fourth character wheel 28 is provided with a plurality of fourth character wheel positioning grooves 283 corresponding to character codes of the fourth character wheel 28; the first elastic claw 2911 is movably engaged with each first word wheel positioning groove 253 of the first word wheel 25, the second elastic claw 2912 is movably engaged with each second word wheel positioning groove 263 of the second word wheel 26, the third elastic claw 2913 is movably engaged with each third word wheel positioning groove 273 of the third word wheel 27, and the fourth elastic claw 2914 is movably engaged with each fourth word wheel positioning groove 283 of the fourth word wheel 28, so that the rotation angle of each of the first word wheel 25, the second word wheel 26, the third word wheel 27 and the fourth word wheel 28 can be limited, and the first word wheel 25, the second word wheel 26, the third word wheel 27 and the fourth word wheel 28 can be accurately rotated.

Further, in the first embodiment of the present invention, as shown in fig. 2, 19, 20, 37 and 38, a sector gear 83 may be fitted on the lock cylinder 8, and the sector gear 83 may be integrally formed with the cam block 82; the upper part of the lock cylinder tail 4 is rotatably matched with the bottom of the knob 3, the upper part of the lock cylinder tail 4 is provided with a driven gear 42 which is movably matched with the sector gear 83, the driven gear 42 can be movably matched with a transition gear 43 in the knob 3 through matching, the transition gear 43 is meshed with the driven gear 42, the transition gear 43 is movably meshed with the sector gear 83, and the side wall of the upper part of the lock cylinder tail 4 is provided with a limit groove 44; the inner bottom wall of the knob 3 is matched with a rotatable swing arm 36 and a swing arm reset piece 37 for driving the swing arm 36 to reset; the two ends of the swing arm 36 are divided into a buckling end 361 and a linkage end 362, and the buckling end 361 is provided with a buckling part 3611 movably buckled with the limit groove 44; the lock core tail 4 and the knob 3 are mutually limited by the lock limiting groove 44 buckled by the buckling part 3611, so that the lock core tail 4 can not rotate relative to the knob 3; the buckling part 3611 is separated from the buckling with the limiting groove 44, so that the limit between the lock cylinder tail 4 and the knob 3 can be released, and the lock cylinder tail 4 can rotate relative to the knob 3; the linkage end 362 of the swing arm 36 is linked with the lock cylinder 8, the buckling part 3611 of the swing arm 36 is buckled with the limit groove 44 or is separated from buckling with the limit groove 44 along with the rotation of the lock cylinder 8, and when the buckling part 3611 is separated from buckling with the limit groove 44, the sector gear 83 is in transmission fit with the driven gear 42, thus, the buckling part 3611 is separated from buckling with the limit groove 44 by rotating the lock cylinder 8, the lock cylinder tail 4 can rotate relative to the knob 3, then the lock cylinder 8 is continuously rotated, and the lock cylinder tail 4 can be driven to rotate through the sector gear 83 and the driven gear 42 to realize unlocking, wherein the lock cylinder 8 can be set to be rotated in the forward direction to realize unlocking, and the lock cylinder 8 is rotated in the reverse direction to realize password recovery. The outer wall of the cam block 82 is provided with a second cam surface 822 with a radius gradually expanding along the circumferential direction of the lock cylinder 8, and the second cam surface 822 is in sliding fit with the side surface of the linkage end 362 of the swing arm 36, so that under the cooperation of the swing arm reset piece 37, the rotation of the lock cylinder 8 can drive the swing arm 36 to rotate, and further the buckling part 3611 of the swing arm 36 can buckle the limit groove 44 or disengage from buckling with the limit groove 44 along with the rotation of the lock cylinder 8; the swing arm resetting piece 37 is a U-shaped spring piece fixed on the inner bottom wall of the knob 3, and one side of the U-shaped spring piece abuts against one side of the buckling end 361 of the swing arm 36 opposite to the buckling part 3611, so as to drive the swing arm 36 to rotate and reset.

Embodiment two:

as shown in fig. 1 and fig. 21 to 40, in a second embodiment of the present invention, an automatic code-scrambling coded lock includes a panel 1, a character wheel assembly 2, a knob 3 and a fixing base 5; the knob 3 is rotatably matched between the panel 1 and the fixed seat 5, the top of the knob 3 is opened, the knob 3 can be matched with a lock tongue 41, and the character wheel assembly 2 is arranged in the knob 3.

Specifically, in the second embodiment of the present invention, a lock core tail 4 is matched with the bottom of the knob 3 in fig. 1, 21, 22, 23, 33 and 34, the lock tongue 41 is matched with the lock core tail 4, and the lock tongue 41 can be locked on the lock core tail 4 through a screw s; the fixing seat 5 can be provided with a stud 52 matched with a nut 53 for connecting the fixing seat 5 with a door plate; the fixing seat 5 is provided with a through hole 51 for the lock core tail 4 to pass through, and the through hole 51 can be formed in the stud 52, namely the stud 52 is of a hollow structure; the fixed seat 5 is fixedly connected with the panel 1 through a screw d penetrating through the knob 3, and a sliding hole 31 for the screw d to slide is formed in the bottom wall of the knob 3, so that the knob 3 can rotate relative to the panel 1 and the fixed seat 5.

In the second embodiment of the present invention, as shown in fig. 24 to 32 and fig. 35 and 36, the character wheel assembly 2 includes a spindle 20, n bushing assemblies movably sleeved on the spindle 20, and n character wheels respectively sleeved on the bushing assemblies, where n is an integer greater than or equal to 2, and in the second embodiment of the present invention, n is four as an example; the two ends of the mandrel 20 are divided into a first end 201 and a second end 202, and the four character wheels are sequentially divided into a first character wheel 25, a second character wheel 26, a third character wheel 27 and a fourth character wheel 28 along the direction from the first end 201 to the second end 202 of the mandrel 20; the bushing assemblies are abutted against each other, and the four bushing assemblies are sequentially divided into a first bushing assembly 21, a second bushing assembly 22, a third bushing assembly 22 and a fourth bushing assembly 23 along the direction from the first end 201 to the second end 202 of the mandrel 20; each bushing assembly comprises two bushings sleeved on the mandrel 20 and abutted against each other, the two bushings of the first bushing assembly 21 are sequentially divided into a first auxiliary bushing 211 and a first main bushing 212 along the direction from the first end to the second end of the mandrel 20, a first main bushing through groove 2122 is formed in the inner wall of the first main bushing 212, and a first auxiliary bushing through groove 2111 is formed in the inner wall of the first auxiliary bushing 211; the first character wheel 25 is movably provided with a first auxiliary bushing 211 and a first main bushing 212, the inner wall of the first character wheel 25 is provided with a plurality of first axial caulking grooves 251 which are distributed at equal intervals, the outer wall of the first main bushing 212 is provided with first axial caulking blocks 2121 which are movably meshed with the first axial caulking grooves 251 so that the first main bushing 212 is movably meshed with the first character wheel 25; the two bushings of the second bushing assembly 22 are sequentially divided into a second auxiliary bushing 221 and a second main bushing 222 along the direction from the first end 201 to the second end 202 of the mandrel 20, a second main bushing through groove 2222 is formed in the inner wall of the second main bushing 222, and a second auxiliary bushing through groove 2211 is formed in the inner wall of the second auxiliary bushing 221; the second character wheel 26 is movably sleeved with a second auxiliary bushing 221 and a second main bushing 222, a plurality of second axial caulking grooves 261 are formed in the inner wall of the second character wheel 26 at equal intervals, and second axial caulking blocks 2221 which are movably meshed with the second axial caulking grooves 261 are formed in the outer wall of the second main bushing 222 so that the second main bushing 222 is movably meshed with the second character wheel 26; the two bushings of the third bushing assembly 23 are sequentially divided into a third auxiliary bushing 231 and a third main bushing 232 along the direction from the first end 201 to the second end 202 of the mandrel 20, a third main bushing through groove 2323 is formed in the inner wall of the third main bushing 232, and a third auxiliary bushing through groove 2311 is formed in the inner wall of the third auxiliary bushing 231; the third character wheel 27 is movably sleeved with a third auxiliary bushing 231 and a third main bushing 232, a plurality of third axial caulking grooves 271 which are distributed at equal intervals are formed in the inner wall of the third character wheel 27, and third axial caulking blocks 2321 which are movably meshed with the third axial caulking grooves 271 are formed in the outer wall of the third main bushing 232 so that the third main bushing 232 is movably meshed with the third character wheel 27; the two bushings of the fourth bushing assembly 24 are sequentially divided into a fourth auxiliary bushing 241 and a fourth main bushing 242 along the direction from the first end 201 to the second end 202 of the mandrel 20, a fourth main bushing through groove 2424 is formed in the inner wall of the fourth main bushing 242, and a fourth auxiliary bushing through groove 2411 is formed in the inner wall of the fourth auxiliary bushing 241; the fourth character wheel 28 is movably sleeved with a fourth auxiliary bushing 241 and a fourth main bushing 242, a plurality of fourth axial caulking grooves 281 are distributed on the inner wall of the fourth character wheel 28 at equal intervals, and a fourth axial caulking block 2421 which is movably meshed with each fourth axial caulking groove 281 is arranged on the outer wall of the fourth main bushing 242 so that the fourth main bushing 242 is movably meshed with the fourth character wheel 28.

In the second embodiment of the present invention, as shown in fig. 1, 21, 24 to 32 and 35 and 36, four character wheel holes 11 for inserting the first character wheel 25, the second character wheel 26, the third character wheel 27 and the fourth character wheel 28 are formed in the panel 1 to position the first character wheel 25, the second character wheel 26, the third character wheel 27 and the fourth character wheel 28; the inner wall of the first character wheel 25 is also provided with a first positioning lug 252, the inner wall of the second character wheel 26 is also provided with a second positioning lug 262, the inner wall of the third character wheel 27 is also provided with a third positioning lug 272, and the inner wall of the fourth character wheel 28 is also provided with a fourth positioning lug 282; the first auxiliary bushing 211 has a first messy code protrusion 2112 movably abutting against the first positioning protrusion 252 and a second messy code protrusion 2212 movably abutting against the first positioning protrusion 252, the second auxiliary bushing 221 has a second messy code protrusion 2212 movably abutting against the second positioning protrusion 262, the third auxiliary bushing 231 has a third messy code protrusion 2312 movably abutting against the third positioning protrusion 272, and the fourth auxiliary bushing 241 has a fourth messy code protrusion 2412 movably abutting against the fourth positioning protrusion 282.

In the second embodiment of the present invention, as shown in fig. 21, 24 to 32 and 35 and 36, the first end 201 of the mandrel 20 is matched with a push block 6 that can move along the axial direction of the mandrel 20, the inner side of the push block 6 abuts against the first auxiliary bushing 221 so that the movement of the push block 6 can push each bushing assembly to move towards the second end 202 of the mandrel 20, a first return spring T1 for driving the push block 6 to return is disposed between the push block 6 and the first end 201 of the mandrel 20, the push block 6 can be sleeved on the first end 201 of the mandrel 20, a positioning caulking groove 2011 can be formed on the first end 201 of the mandrel 20, the first return spring T1 is inserted into the positioning caulking groove 2011, and two ends of the first return spring T1 abut against the positioning caulking groove 2011 and the push block 6 respectively. A limiting pin 61 capable of moving up and down and a limiting pin reset spring 62 for driving the limiting pin 61 to reset are matched on the outer side of the push block 6; a second return spring T2 is arranged between the second end 202 of the mandrel 20 and the fourth main bushing 242, so that each bushing assembly is driven by the second return spring T2 to return after being pushed by the push block 6 to move towards the second end 202 of the mandrel 20; five mandrel protrusions are sequentially arranged on the mandrel 20 along the direction from the first end 201 to the second end 202 of the mandrel 20 in a linear arrangement, and the five mandrel protrusions are sequentially divided into a first mandrel protrusion 203, a second mandrel protrusion 204, a third mandrel protrusion 205, a fourth mandrel protrusion 206 and a fifth mandrel protrusion 207 along the direction from the first end 201 to the second end 202 of the mandrel 20; the first main bushing through groove 2122 of the first main bushing 212 is movably engaged with the second spindle bump 204, the second main bushing through groove 2222 of the second main bushing 222 is movably engaged with the third spindle bump 205, the third main bushing through groove 2322 of the third main bushing 232 is movably engaged with the fourth spindle bump 206, the fourth main bushing through groove 2422 of the fourth main bushing 242 is movably engaged with the fifth spindle bump 207, the first sub-bushing through groove 2111 of the first sub-bushing 211 is engaged with the first spindle bump 203, the second sub-bushing through groove 2211 of the second sub-bushing 221 is engaged with the second spindle bump 204, the third sub-bushing through groove 2311 of the third sub-bushing 231 is engaged with the third spindle bump 205, and the fourth sub-bushing through groove 2411 of the fourth sub-bushing 241 is engaged with the fourth spindle bump 206. When the first, second, third, and fourth print wheels 25, 26, 27, and 28 are all in the correct password position, the first, second, third, and fourth main bushing channels 2121, 2221, 2321, and 2421, and the first, second, third, and fourth sub bushing channels 2111, 2211, 2311, and 2411 are aligned with the respective spindle lugs of the spindle 20 such that the respective bushing assemblies are axially movable along the spindle 20 to enable rotation of the knob 3 for unlocking operations.

In the second embodiment of the present invention, as shown in fig. 21 to 23, the inner wall of the knob 3 is provided with a locking positioning through groove 32, an unlocking positioning through groove 33 and a messy code arc-shaped boss 34, two ends of the messy code arc-shaped boss 34 are respectively engaged with the locking positioning through groove 32 and the unlocking positioning through groove 33, and the limiting pin 61 is in sliding fit with the locking positioning through groove 32, the unlocking positioning through groove 33 and the messy code arc-shaped boss 34; when the automatic code-disorder coded lock is unlocked, the knob 3 is rotated in the forward direction, and the limiting pin 61 moves from the locking positioning through groove 32 to the unlocking positioning through groove 33 through the code-disorder arc-shaped boss 34; when the automatic code-disorder coded lock is locked, the knob 3 is reversely rotated, and the limiting pin 61 moves from the unlocking positioning through groove 33 to the locking positioning through groove 32 through the code-disorder arc-shaped boss 34. Wherein, two ends of the messy code arc-shaped boss 34 are respectively connected with the locking positioning through groove 32 and the unlocking positioning through groove 33 through a first inclined pushing surface 341 and a second inclined pushing surface 342, a raised stop block 343 is formed at one end of the messy code arc-shaped boss 34 adjacent to the locking positioning through groove 32, a first stop block inclined surface 3431 connected with the first inclined pushing surface 341 is formed at one end of the stop block 343 adjacent to the locking positioning through groove 32, and a second stop block inclined surface 3432 inclined downwards is formed at the lower side of the stop block 343; a sliding groove 60 is arranged on the outer side of the push block 6, the limiting pin 61 is slidably connected in the sliding groove 60 in a vertically movable manner, and the upper end and the lower end of the limiting pin return spring 62 respectively abut against the bottom of the limiting pin 61 and the bottom wall of the sliding groove 60 to drive the limiting pin 61 to move upwards; when the limit pin 61 moves on the messy code arc-shaped boss 34, the limit pin 61 is opposite to the stop block 34, and as shown in fig. 31 and 32, when the knob 3 is reversely rotated, the limit pin 61 can move from the messy code arc-shaped boss 34 to the locking positioning through groove 32 through the stop block 343 by the second stop block inclined surface 3432, wherein the stop block 343 is arranged to ensure that the limit pin 61 can be firmly embedded in the locking positioning through groove 32 during locking; it should be noted that, the stopper 343 may not be provided, and by deepening the depth of the locking positioning through groove 32, the stopper 61 may be firmly engaged in the locking positioning through groove 32 during locking, and the stopper 343 may not be provided, so that the stopper 61 may be fixedly connected with the push block 6.

In the second embodiment of the present invention, as shown in fig. 24, when the stopper pin 61 is engaged in the locking positioning groove 32, each of the bush components moves to the locking position, and at this time, the first auxiliary bush groove 2111, the second auxiliary bush groove 2211, the third auxiliary bush groove 2311 and the fourth auxiliary bush groove 2411 are respectively engaged with the first spindle boss 203, the second spindle boss 204, the third spindle boss 205 and the fourth spindle boss 206, the first main bush groove 2121 is disengaged from the second spindle boss 204, the second main bush groove 2221 is disengaged from the third spindle boss 205, the third main bush groove 2321 is disengaged from the fourth spindle boss 206, the fourth main bush groove 2421 is disengaged from the fifth spindle boss 207, the first main bush 212 is engaged with the first character wheel 25, the second main bush 222 is engaged with the second character wheel 26, the third main bush 232 is engaged with the third character wheel 27, the fourth main bush 242 is engaged with the fourth character wheel 28, the first scrambling boss 2412, the second scrambling boss 272, the fourth scrambling boss 2312, the fourth scrambling boss 2212 and the fourth scrambling boss 2312 are completely misaligned with the fourth scrambling boss 2212; as shown in fig. 27 and 28, when the stopper pin 61 is engaged in the unlocking position through groove 33, each bushing assembly moves to the unlocking position, and at this time, the first sub-bushing through groove 2111, the second sub-bushing through groove 2211, the third sub-bushing through groove 2311 and the fourth sub-bushing through groove 2411 are engaged with the first spindle protrusion 203, the second spindle protrusion 204, the third spindle protrusion 205 and the fourth spindle protrusion 206, respectively, the first main bushing through groove 2121 is engaged with the second spindle protrusion 204, the second main bushing through groove 2221 is engaged with the third spindle protrusion 205, the third main bushing through groove 2321 is engaged with the fourth spindle protrusion 206, the fourth main bushing through groove 2421 is engaged with the fifth spindle protrusion 207, the first messy code protrusion 2112, the second messy code protrusion 2212, the third messy code protrusion 2312 and the fourth messy code protrusion 2412 are completely dislocated with the first positioning protrusion 252, the second positioning protrusion 262, the third positioning protrusion 272 and the fourth positioning protrusion 2412; as shown in fig. 25, 26, 31 and 32, when the stopper pin 61 abuts against the messy-code arc-shaped boss 34, each of the bush components moves to the messy-code position, and at this time, the first sub bush through groove 2111, the second sub bush through groove 2211, the third sub bush through groove 2311 and the fourth sub bush through groove 2411 are respectively engaged with the first spindle boss 203, the second spindle boss 204, the third spindle boss 205 and the fourth spindle boss 206, the first main bush through groove 2121 is disengaged from the second spindle boss 204, the second main bush through groove 2221 is disengaged from the third spindle boss 205, the third main bush through groove 2321 is disengaged from the fourth spindle boss 206, the fourth main bush through groove 2421 is disengaged from the fifth spindle boss 207, the first main bush 212 is engaged with the first character wheel 25, the second main bush 222 is engaged with the second character wheel 26, the third main bush 232 is engaged with the third character wheel 27, the fourth main bush 242 is engaged with the fourth character wheel 28, the first positioning boss 252 is disengaged from the third spindle boss 205, the fourth positioning boss 272 is positioned opposite to the fourth messy-code boss 2112, and the fourth positioning boss 2212 is positioned opposite to the fourth positioning boss 2312.

In the second embodiment of the present invention, as shown in fig. 21 to 32, a transmission mechanism 7 is disposed between the knob 3 and the second end 202 of the mandrel 20, the rotation of the knob 3 drives the mandrel 20 to rotate around the central rotation axis of the mandrel 20 through the transmission mechanism 7, the transmission mechanism 7 may include an arc-shaped convex wall 71 disposed in the knob 3 and a transmission gear 72 disposed on the second end 202 of the mandrel 20, the arc-shaped convex wall 71 is connected to the knob 3 and concentrically disposed, the upper end surface of the arc-shaped convex wall 71 is provided with a plurality of transmission teeth 711, and the transmission gear 72 is connected to the second end 202 of the mandrel 20 and movably engaged with each transmission tooth 711, so that the mandrel 20 can be driven to rotate around the central rotation axis when the knob 3 rotates; the arc-shaped convex wall 71 and the knob 3 can be integrally formed, and the transmission gear 72 and the mandrel 20 can be integrally formed.

In the second embodiment of the present invention, the unlocking process of the automatic code disorder password is as follows: first, the first character wheel 25, the second character wheel 26, the third character wheel 27 and the fourth character wheel 28 are shifted to enable the first character wheel 25, the second character wheel 26, the third character wheel 27 and the fourth character wheel 28 to be in correct password positions; then, the knob 3 is rotated forward to enable the limiting pin 61 to move from the locking positioning through groove 32 to enter the unlocking positioning through groove 33 through the messy code arc-shaped boss 34, so that the lock cylinder tail 4 and the lock tongue 41 are rotated forward to unlock; in the moving process of the arc-shaped boss 34, the knob 3 drives the spindle 20 to rotate forward at least one circle through the transmission mechanism 7, so that the spindle 20 drives the first auxiliary bushing 211, the first main bushing 212, the second auxiliary bushing 221, the second main bushing 222, the third auxiliary bushing 231, the third main bushing 232, the fourth auxiliary bushing 241 and the fourth main bushing 242 to rotate forward at least one circle, so that the first messy code protrusion 2112 collides with the first positioning protrusion 252 to drive the first character wheel 25 and the first main bushing 212 to rotate to the first messy code position of the first character wheel 25, the second messy code protrusion 2212 collides with the second positioning protrusion 262 to drive the second character wheel 26 and the second main bushing 222 to rotate to the first messy code position of the second character wheel 26, the third messy code protrusion 2312 collides with the third positioning protrusion to drive the third character wheel 27 and the third main bushing 232 to rotate to the first messy code position of the third character wheel 27, and the fourth positioning protrusion 272 collides with the fourth positioning protrusion 272 to drive the fourth character wheel 27 to rotate to the first messy code position of the fourth character wheel 24128 to hide the fourth positioning protrusion 28.

In the second embodiment of the present invention, the locking process of the automatic code disorder password is as follows: the knob 3 is reversely rotated to enable the limiting pin 61 to move from the unlocking positioning through groove 33 to enter the locking positioning through groove 32 through the messy code arc-shaped boss 34, so that the lock cylinder tail 4 and the lock tongue 41 reversely rotate to lock; in the process that the limiting pin 61 moves on the messy-code arc-shaped boss 34, the knob 3 drives the mandrel 20 to reversely rotate at least one circle through the transmission mechanism 7, so that the mandrel 20 drives the first auxiliary bushing 211, the second auxiliary bushing 221, the third auxiliary bushing 231 and the fourth auxiliary bushing 241 to reversely rotate at least one circle, so that the first messy-code protrusion 2112 collides with the first positioning protrusion 252 to drive the first character wheel 25 and the first main bushing 212 to rotate to the second messy-code position of the first character wheel 25, the second messy-code protrusion 2212 collides with the second positioning protrusion 262 to drive the second character wheel 26 and the second main bushing 222 to rotate to the second position of the second character wheel messy-code 26, the third messy-code protrusion 2312 collides with the third positioning protrusion 272 to drive the third character wheel 27 and the third main bushing 232 to rotate to the second messy-code position of the third character wheel 27, and the fourth messy-code protrusion 282 collides with the fourth positioning protrusion 282 to drive the fourth character wheel 28 and the fourth main bushing 242 to rotate to the second messy-code position of the fourth character wheel 28, so that the password is hidden. In the second embodiment of the present invention, when the first character wheel 25, the second character wheel 26, the third character wheel 27 and the fourth character wheel 28 are respectively rotated to the first code-disorder position of the first character wheel 25, the first code-disorder position of the second character wheel 26, the first code-disorder position of the third character wheel 27 and the first code-disorder position of the fourth character wheel 28, the first character wheel 25, the second character wheel 26, the third character wheel 27 and the fourth character wheel 28 can display the number "0" in each character wheel hole 11; and the first, second, third and fourth character wheels 25, 26, 27 and 28 are rotated to the second scrambling position of the first character wheel 25, the second scrambling position of the second character wheel 26, the second scrambling position of the third character wheel 27 and the second scrambling position of the fourth character wheel 28, respectively, the first, second, third and fourth character wheels 25, 26, 27 and 28 may each display a number "1" in each of the character wheel holes 11.

Further, in the second embodiment of the present invention, fig. 27 to 30 are combined; the unlocking positioning through groove 33 can be matched with a movable password changing button 332, a through hole 331 for the outer end of the password changing button 332 to penetrate out is formed in the unlocking positioning through groove 33, the outer end of the password changing button 332 penetrates out of the knob 3 from the through hole 331, and the inner end of the password changing button 332 is movably abutted against the limiting pin 61. When the automatic code-scrambling code is in the unlocking state, that is, when the limit pin 61 is embedded in the unlocking positioning through groove 33, as shown in fig. 29 and 30, the code-modifying button 332 is pressed to push each bush assembly to move, so that the first main bush through groove 2121 is engaged with the second spindle lug 204, the second main bush through groove 2221 is engaged with the third spindle lug 205, the third main bush through groove 2321 is engaged with the fourth spindle lug 206, the fourth main bush through groove 2421 is engaged with the fifth spindle lug 207, the first main bush 212 is disengaged from the first character wheel 25, the second main bush 222 is disengaged from the second character wheel 26, the third main bush 232 is disengaged from the third character wheel 27, the fourth main bush 242 is disengaged from the fourth character wheel 28, and at this time, the first character wheel 25, the second character wheel 26, the third character wheel 27 and the fourth character wheel 28 can be rotated for code replacement.

Further, in the second embodiment of the present invention, as shown in fig. 21 and fig. 35 to 40, a rotatable lock cylinder 8 may be fitted in the knob 3, and the lock cylinder 8 may be fitted with an emergency key 81 to rotate the lock cylinder 8 by the emergency key 81; a lock cylinder hole 12 is arranged on the panel 1 corresponding to the lock cylinder 8 so as to facilitate the insertion of an emergency key 81 into the lock cylinder 8; the outer wall of the first main bushing 212 is further provided with a second code bump 2123 that is in movable contact with the second positioning bump 262, the outer wall of the second main bushing 222 is further provided with a third code bump 2223 that is in movable contact with the third positioning bump 272, the outer wall of the third main bushing 232 is further provided with a fourth code bump 2323 that is in movable contact with the fourth positioning bump 282, and the outer wall of the fourth main bushing 242 is further provided with a fifth code bump 2423; the knob 3 is matched with a code searching member 9 which is in linkage fit with the lock cylinder 8, the code searching member 9 is provided with a first clamping part 91, a second clamping part 92, a third clamping part 93 and a fourth clamping part 94 which move up and down along with the rotation of the lock cylinder 8, and the first clamping part 91, the second clamping part 92, the third clamping part 93 and the fourth clamping part 94 are respectively in movable abutting joint with a second code bump 2123, a third code bump 2223, a fourth code bump 2323 and a fifth code bump 2423; and the second code bump 2123 and the first main bushing through groove 2122 are positioned such that: when the second code bump 2123 abuts against the first clamping portion 91, the first main bushing through groove 2122 is aligned with the second mandrel bump 204; the positions of the third code projection 2223 and the second main bushing through slot 2222 are set as follows: when the third code projection 2223 abuts against the second clamping portion 92, the second main bushing through slot 2222 is aligned with the third spindle projection 205; the fourth code cam 2323 and the third main bushing through slot 2322 are located as follows: when the fourth code cam 2323 abuts against the third clamping portion 93, the third main bushing through slot 2322 is aligned with the fourth spindle cam 206; the fifth code cam 2423 and the fourth main bushing through slot 2422 are positioned to: when the fifth code bump 2423 and the fourth clamping portion 94 are abutted against each other, the fourth main bushing through groove 2422 is aligned with the fifth spindle bump 205. Thus, when the user forgets the password, the first clamping portion 91, the second clamping portion 92, the third clamping portion 93 and the fourth clamping portion 94 can be moved up to the code searching position by rotating the lock cylinder 8, so that the first clamping portion 91 can collide with the second password bump 2123, the second clamping portion 92 can collide with the third password bump 2223, the third clamping portion 93 can collide with the fourth password bump 2323 and the fourth clamping portion 94 can collide with the fifth password bump 2423; then, the first word wheel 25 is rotated to drive the first main bushing 212 to rotate to the first clamping portion 91 to abut against the second password bump 2123, the second word wheel 26 is rotated to drive the second main bushing 222 to rotate to the second clamping portion 92 to abut against the third password bump 2223, the third word wheel 27 is rotated to drive the third main bushing 232 to rotate to the third clamping portion 93 to abut against the fourth password bump 2323, and the fourth word wheel 28 is rotated to drive the fourth main bushing 242 to rotate to the fourth clamping portion 94 to abut against the fifth password bump 2423; at this time, the characters displayed by the first character wheel 25, the second character wheel 26, the third character wheel 27 and the fourth character wheel 28 in the character wheel holes 11 are correct codes, so that code recovery is realized. Wherein the wheel assembly 2 can be matched in a wheel box 29, the limiting pin 61 penetrates out of the wheel box 29, the second end 202 of the wheel axle 20 penetrates out of the wheel box 29, the top of the wheel box 29 is opened, and two ends of the second return spring T2 respectively abut against the fourth main bushing 242 and the side wall of the wheel box 29 adjacent to the second end 202 of the wheel axle 20; the middle part of the code searching piece 9 abuts against the bottom of the character wheel box 29, and one side of the code searching piece 9 is provided with a first clamping part 91, a second clamping part 92, a third clamping part 93 and a fourth clamping part 94 which are tilted upwards; a baffle 95 which extends out of the character wheel box 29 and can move up and down is arranged on the other side of the code searching piece 9; a code searching reset spring 96 for driving the baffle 95 to move downwards is arranged between the other side of the code searching part 9 and the character wheel box 29; the lock cylinder 8 is matched with a cam block 82, the cam block 82 can be locked on the bottom of the lock cylinder 8 through a screw d, the top of the cam block 82 is provided with an inclined first cam surface 821, and the first cam surface 821 is in sliding fit with the bottom surface of the baffle 95; by the cooperation of the first cam surface 821 and the bottom surface of the baffle 95, the baffle 95 of the code searching member 9 can be driven to move up and down when the lock cylinder 8 rotates, and then the first clamping portion 91, the second clamping portion 92, the third clamping portion 93 and the fourth clamping portion 94 can move up and down. As shown in fig. 35 to 38, the print wheel box 29 is internally provided with a positioning piece 291, the positioning piece 291 is provided with four elastic claws, the four elastic claws are sequentially a first elastic claw 2911, a second elastic claw 2912, a third elastic claw 2913 and a fourth elastic claw 2914, and the outer wall of the first print wheel 25 is provided with a plurality of first print wheel positioning grooves 253 corresponding to the character codes of the first print wheel 25; the outer wall of the second character wheel 26 is provided with a plurality of second character wheel positioning grooves 263 corresponding to character codes of the second character wheel 26; a plurality of third character wheel positioning grooves 273 are formed in the outer wall of the third character wheel 27 and correspond to character codes of the third character wheel 27; the outer wall of the fourth character wheel 28 is provided with a plurality of fourth character wheel positioning grooves 283 corresponding to character codes of the fourth character wheel 28; the first elastic claw 2911 is movably engaged with each first word wheel positioning groove 253 of the first word wheel 25, the second elastic claw 2912 is movably engaged with each second word wheel positioning groove 263 of the second word wheel 26, the third elastic claw 2913 is movably engaged with each third word wheel positioning groove 273 of the third word wheel 27, and the fourth elastic claw 2914 is movably engaged with each fourth word wheel positioning groove 283 of the fourth word wheel 28, so that the rotation angle of each of the first word wheel 25, the second word wheel 26, the third word wheel 27 and the fourth word wheel 28 can be limited, and the first word wheel 25, the second word wheel 26, the third word wheel 27 and the fourth word wheel 28 can be accurately rotated.

Further, in the second embodiment of the present invention, as shown in fig. 21, 33, 34, 37 and 38, a sector gear 83 may be fitted on the lock cylinder 8, and the sector gear 83 may be integrally formed with the cam block 82; the upper part of the lock cylinder tail 4 is rotatably matched with the bottom of the knob 3, the upper part of the lock cylinder tail 4 is provided with a driven gear 42 which is movably matched with the sector gear 83, the driven gear 42 can be movably matched with a transition gear 43 in the knob 3 through matching, the transition gear 43 is meshed with the driven gear 42, the transition gear 43 is movably meshed with the sector gear 83, and the side wall of the upper part of the lock cylinder tail 4 is provided with a limit groove 44; the inner bottom wall of the knob 3 is matched with a rotatable swing arm 36 and a swing arm reset piece 37 for driving the swing arm 36 to reset; the two ends of the swing arm 36 are divided into a buckling end 361 and a linkage end 362, and the buckling end 361 is provided with a buckling part 3611 movably buckled with the limit groove 44; the lock core tail 4 and the knob 3 are mutually limited by the lock limiting groove 44 buckled by the buckling part 3611, so that the lock core tail 4 can not rotate relative to the knob 3; the buckling part 3611 is separated from the buckling with the limiting groove 44, so that the limit between the lock cylinder tail 4 and the knob 3 can be released, and the lock cylinder tail 4 can rotate relative to the knob 3; the linkage end 362 of the swing arm 36 is linked with the lock cylinder 8, the buckling part 3611 of the swing arm 36 is buckled with the limit groove 44 or is separated from buckling with the limit groove 44 along with the rotation of the lock cylinder 8, and when the buckling part 3611 is separated from buckling with the limit groove 44, the sector gear 83 is in transmission fit with the driven gear 42, thus, the buckling part 3611 is separated from buckling with the limit groove 44 by rotating the lock cylinder 8, the lock cylinder tail 4 can rotate relative to the knob 3, then the lock cylinder 8 is continuously rotated, and the lock cylinder tail 4 can be driven to rotate through the sector gear 83 and the driven gear 42 to realize unlocking, wherein the lock cylinder 8 can be set to be rotated in the forward direction to realize unlocking, and the lock cylinder 8 is rotated in the reverse direction to realize password recovery. The outer wall of the cam block 82 is provided with a second cam surface 822 with a radius gradually expanding along the circumferential direction of the lock cylinder 8, and the second cam surface 822 is in sliding fit with the side surface of the linkage end 362 of the swing arm 36, so that under the cooperation of the swing arm reset piece 37, the rotation of the lock cylinder 8 can drive the swing arm 36 to rotate, and further the buckling part 3611 of the swing arm 36 can buckle the limit groove 44 or disengage from buckling with the limit groove 44 along with the rotation of the lock cylinder 8; the swing arm resetting piece 37 is a U-shaped spring piece fixed on the inner bottom wall of the knob 3, and one side of the U-shaped spring piece abuts against one side of the buckling end 361 of the swing arm 36 opposite to the buckling part 3611, so as to drive the swing arm 36 to rotate and reset.

The above examples and drawings are not intended to limit the form or form of the present invention, and any suitable variations or modifications thereof by those skilled in the art should be construed as not departing from the scope of the present invention.

Claims

1. An automatic code-disorder coded lock comprises a panel, a character wheel assembly, a knob and a fixed seat; the knob is rotatably arranged between the upper part and the lower part of the panel and the fixed seat, and the top of the knob is opened; the character wheel assembly is arranged in the knob, and is characterized in that:

the character wheel assembly comprises a mandrel, n bushing assemblies movably sleeved with the mandrel, n character wheels respectively sleeved with the bushing assemblies, n is an integer greater than or equal to 2, and the bushing assemblies are abutted against each other; the two ends of the mandrel are divided into a first end and a second end, and the n bushing assemblies are sequentially divided into a first bushing assembly and an n bushing assembly along the direction from the first end to the second end of the mandrel; each bushing assembly comprises two bushings sleeved on the mandrel and abutted against each other, wherein the two bushings of the ith bushing assembly are sequentially divided into an ith auxiliary bushing and an ith main bushing along the direction from the first end to the second end of the mandrel, and i is an integer from 1 to n; the inner wall of the ith main bushing is provided with an ith main bushing through groove, and the inner wall of the ith auxiliary bushing is provided with an ith auxiliary bushing through groove; the n-th character wheels are sequentially divided into a first character wheel and an n-th character wheel along the direction from the first end to the second end of the mandrel, n character wheel holes for respectively inserting the first character wheel and the n-th character wheel are formed in the panel, the i-th character wheel of the i-th main bushing and the i-th auxiliary bushing is movably sleeved on the i-th character wheel, the i-th character wheel is movably meshed with the i-th main bushing, an i-th positioning convex block is arranged on the inner wall of the i-th character wheel, and an i-th messy code convex block which is movably abutted against the i-th positioning convex block is arranged on the outer wall of the i-th auxiliary bushing;

The first end of the mandrel is matched with a push block capable of moving along the axial direction of the mandrel, the inner side of the push block abuts against the first auxiliary bushing, a first reset spring for driving the push block to reset is arranged between the push block and the first end of the mandrel, and the outer side of the push block is matched with a limiting pin; a second reset spring is arranged between the second end of the mandrel and the nth main bushing; n+1 mandrel lugs which are arranged in a straight line are sequentially arranged on the mandrel along the direction from the first end to the second end of the mandrel, and the n+1 mandrel lugs are sequentially divided into a first mandrel lug and an n+1 mandrel lug along the direction from the first end to the second end of the mandrel; the ith core shaft lug is meshed with the ith auxiliary bushing through groove of the ith auxiliary bushing, and the (i+1) th core shaft lug is movably meshed with the ith main bushing through groove of the ith main bushing; when the first character wheel to the nth character wheel are all positioned at the correct password position, the first main bushing through groove to the nth main bushing through groove and the first auxiliary bushing through groove to the nth auxiliary bushing through groove are aligned with each mandrel lug of the mandrel so that each bushing assembly can axially move along the mandrel;

the inner wall of the knob is provided with a locking positioning through groove, an unlocking positioning through groove and a messy code arc-shaped boss, two ends of the messy code arc-shaped boss are respectively connected with the locking positioning through groove and the unlocking positioning through groove, and the limiting pin is in sliding fit with the locking positioning through groove, the unlocking positioning through groove and the messy code arc-shaped boss;

When the automatic code-disorder coded lock is unlocked, the knob is rotated positively, and the limiting pin moves from the locking positioning through groove to the unlocking positioning through groove; when the automatic code-disorder coded lock is locked, the knob is reversely rotated, and the limiting pin moves from the unlocking positioning through groove to the locking positioning through groove through the code-disorder arc-shaped boss; when the limiting pins are embedded in the locking positioning through grooves, each bushing assembly moves to a locking position, at the moment, the ith auxiliary bushing through groove is meshed with the ith mandrel lug, the ith main bushing through groove is separated from the ith+1th mandrel lug, the ith main bushing is meshed with the ith character wheel, and the first positioning lug to the nth positioning lug and the first messy code lug to the nth messy code lug are completely misplaced; when the limiting pin is abutted against the messy-code arc-shaped boss, each bushing assembly moves to a messy-code position, at the moment, the ith auxiliary bushing through groove is meshed with the ith mandrel lug, the ith main bushing through groove is separated from the meshing with the (i+1) th mandrel lug, the ith main bushing is meshed with the ith character wheel, and the ith positioning lug is opposite to the ith messy-code lug;

a transmission mechanism is arranged between the knob and the second end of the mandrel, and the rotation of the knob drives the mandrel to rotate around the central rotating shaft of the mandrel through the transmission mechanism; and when the limiting pin moves in the messy code arc-shaped boss, the knob drives the mandrel to rotate at least one circle through the transmission mechanism.

2. An automatic combination lock as defined in claim 1, wherein: the inner wall of the knob is also provided with a reset arc-shaped boss, two ends of the reset arc-shaped boss are respectively connected with the locking positioning through groove and the unlocking positioning through groove, the reset arc-shaped boss and the messy code arc-shaped boss are arranged in a vertically staggered mode, and the reset arc-shaped boss protrudes inwards to form the messy code arc-shaped boss; the limiting pin can be matched on the pushing block in a vertically movable mode, and the pushing block is also matched with a limiting pin reset spring for driving the limiting pin to reset; the limiting pin is in sliding fit with the reset arc-shaped boss; when the automatic code-disorder coded lock is unlocked, the knob is rotated in the forward direction, and the limiting pin moves from the locking positioning through groove to the unlocking positioning through groove through the reset arc-shaped boss; when the limiting pin moves in the process of resetting the arc-shaped boss, the knob drives the mandrel to rotate at least one circle through the transmission mechanism;

the outer wall of the jth main bushing is provided with a jth+1 password lug which is movably abutted against the jth+1 positioning lug, and j is an integer from 1 to n-1; the outer wall of the first auxiliary bushing is provided with a first password lug which is movably abutted against the first positioning lug; when each bushing component moves to a locking position or a messy code position, the first positioning convex block to the n positioning convex block and the first code convex block to the n code convex block are completely misplaced; when the limiting pin is abutted against the reset arc-shaped boss, each bushing assembly moves to a reset position, at the moment, the ith auxiliary bushing through groove is meshed with the ith mandrel lug, the ith main bushing through groove is meshed with the (i+1) th mandrel lug, the ith main bushing is separated from the meshing with the ith character wheel, the ith cipher lug is opposite to the ith positioning lug, and the first positioning lug to the nth positioning lug and the first messy code lug to the nth messy code lug are completely misplaced.

3. An automatic combination lock as defined in claim 2, wherein: the knob is internally matched with a rotatable lock cylinder, and a lock cylinder hole is formed in the panel corresponding to the lock cylinder;

the outer wall of the nth main bushing is provided with an (n+1) th password bump; the knob is also matched with a code searching piece which is matched with the lock cylinder in a linkage way, the code searching piece is provided with a first clamping part to an nth clamping part which move up and down along with the rotation of the lock cylinder, and the ith clamping part is movably abutted against the (i+1) th password lug; the positions of the (i+1) th cipher lug and the (i) th main bushing through groove are set as follows: when the i+1 cipher lug and the i clamping part are abutted against the clamping position, the i main bushing through groove is aligned with the i+1 mandrel lug.

4. An automatic combination lock as defined in claim 2, wherein: the reset arc-shaped boss is positioned above the messy code arc-shaped boss, two ends of the reset arc-shaped boss are respectively connected with the locking positioning through groove and the unlocking positioning through groove through a first inclined guide surface and a second inclined guide surface, two ends of the messy code arc-shaped boss are respectively connected with the locking positioning through groove and the unlocking positioning through groove through a first inclined push surface and a second inclined push surface, and an inclined downward-inclined guide inclined surface is formed on the lower side of one end of the reset arc-shaped boss, which is close to the unlocking positioning through groove; and the limiting pin reset spring is used for driving the limiting pin to move upwards.

5. An automatic combination lock as defined in claim 1, wherein: when the automatic code-disorder coded lock is unlocked, the knob is rotated positively, and the limiting pin moves from the locking positioning through groove to the unlocking positioning through groove through the code-disorder arc-shaped boss.

6. An automatic combination lock as defined in claim 5, wherein: the two ends of the messy code arc-shaped boss are respectively connected with the locking positioning through groove and the unlocking positioning through groove through a first inclined pushing surface and a second inclined pushing surface, a convex stop block is formed at one end of the messy code arc-shaped boss close to the locking positioning through groove, a first stop block inclined surface connected with the first inclined pushing surface is formed at one end of the stop block close to the locking positioning through groove, and a second stop block inclined surface inclined downwards in an inclined manner is formed at the lower side of the stop block; the limiting pin can be matched on the pushing block in a vertically movable mode, and the pushing block is also matched with a limiting pin reset spring for driving the limiting pin to reset, and the limiting pin reset spring is used for driving the limiting pin to move.

7. An automatic combination lock according to claim 4 or 6, wherein: the outer side of the pushing block is provided with a sliding groove, the limiting pin can move up and down and slide in the sliding groove, and the upper end and the lower end of the limiting pin reset spring respectively lean against the bottom of the limiting pin and the bottom wall of the sliding groove.

8. An automatic combination lock as defined in claim 5, wherein: the knob is internally matched with a rotatable lock cylinder, and a lock cylinder hole is formed in the panel corresponding to the lock cylinder; the outer wall of the ith main bushing is provided with an (i+1) th password bump; the knob is also matched with a code searching piece which is matched with the lock cylinder in a linkage way, the code searching piece is provided with a first clamping part to an nth clamping part which move up and down along with the rotation of the lock cylinder, and the ith clamping part is respectively movably abutted against the clamping position with the (i+1) th password lug; the positions of the (i+1) th password lug and the (i) th main bushing through groove are set as follows: when the i+1 cipher lug and the i clamping part are abutted against the clamping position, the i main bushing through groove is aligned with the i+1 mandrel lug.

9. An automatic code-scrambling coded lock according to claim 3 or 8, characterised in that: the character wheel assembly is matched in a character wheel box, the limiting pin penetrates out of the character wheel box, the second end of the character wheel shaft penetrates out of the character wheel box, and the top of the character wheel box is opened;

the middle part of the code searching piece is propped against the bottom of the character wheel box, and one side of the code searching piece is provided with a first clamping part to an nth clamping part which are upwards tilted; a baffle plate which extends out of the character wheel box and can move up and down is arranged on the other side of the code searching piece; a code searching reset spring for driving the baffle plate to move downwards is arranged between the other side of the code searching part and the character wheel box; the lock cylinder is matched with a cam block, the top of the cam block is provided with an inclined first cam surface, and the first cam surface is in sliding fit with the bottom surface of the baffle.

10. An automatic combination lock as defined in claim 9, wherein: the outer wall of the ith character wheel is provided with a plurality of ith character wheel positioning grooves corresponding to character codes of the ith character wheel; the character wheel box is internally matched with a positioning sheet, n elastic claws are arranged on the positioning sheet, the n elastic claws are sequentially from a first elastic claw to an n elastic claw, and the i elastic claw is movably embedded with each i character wheel positioning groove of the i character wheel.

11. An automatic combination lock as defined in claim 1, wherein: the unlocking positioning through groove is arranged as follows: when the limiting pin is embedded in the unlocking positioning through groove, the ith auxiliary bushing through groove is meshed with the ith mandrel lug, the ith main bushing through groove is meshed with the (i+1) th mandrel lug, the first positioning lug to the nth positioning lug and the first messy code lug to the nth messy code lug are all dislocated completely, and the ith main bushing is separated from the meshing with the ith character wheel.

12. An automatic combination lock as defined in claim 1, wherein: the unlocking positioning through groove is matched with a movable password changing button, the outer end of the password changing button penetrates out of the knob, and the inner end of the password changing button is movably abutted against the limiting pin.

13. An automatic combination lock as defined in claim 1, wherein: the transmission mechanism comprises an arc-shaped convex wall arranged in the knob and a transmission gear arranged on the second end of the mandrel, the arc-shaped convex wall is arranged concentrically with the knob, the upper end surface of the arc-shaped convex wall is provided with a plurality of transmission teeth along the circumferential direction of the arc-shaped convex wall, and the transmission gear is connected with the second end of the mandrel and is movably meshed with each transmission tooth.

14. An automatic combination lock as defined in claim 1, wherein: the bottom of the knob is matched with a lock core tail, and a lock tongue is matched on the lock core tail; the fixing seat is provided with a through hole for the lock core tail to pass through, the fixing seat is fixedly connected with the panel through a screw penetrating through the knob, and the bottom wall of the knob is provided with a sliding hole for the screw to slide.

15. An automatic combination lock as defined in claim 14, wherein: the knob is internally matched with a rotatable lock cylinder, and a lock cylinder hole is formed in the panel corresponding to the lock cylinder; a sector gear is arranged on the lock cylinder; the upper part of the lock core tail is rotatably matched with the bottom of the knob, and a driven gear which is movably matched with the sector gear is arranged on the upper part of the lock core tail; a limit groove is formed in the side wall of the upper part of the lock core tail; the inner bottom wall of the knob is matched with a rotatable swing arm and a swing arm reset piece for driving the swing arm to reset; the swing arm both ends divide into buckling end and company's movable end, and the buckling end is equipped with the buckling part with spacing groove activity lock, company's movable end and lock core interlock, and the buckling part of swing arm rotates along with the lock core and buckles spacing groove or break away from with the lock of spacing groove, and when buckling part break away from with the lock of spacing groove, sector gear and driven gear transmission cooperation.

16. An automatic combination lock as defined in claim 15, wherein: the lock cylinder is matched with a cam block, the outer wall of the cam block is provided with a second cam surface with the radius gradually expanding along the circumferential direction of the lock cylinder, and the second cam surface is in sliding fit with the side face of the linkage end of the swing arm.