CN115263085A

CN115263085A - Puzzle lock with double cipher

Info

Publication number: CN115263085A
Application number: CN202210836469.3A
Authority: CN
Inventors: 梁福生; 栾光辉
Original assignee: Xiamen Make Security Technology Co Ltd
Current assignee: Xiamen Make Security Technology Co Ltd
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2022-11-01
Anticipated expiration: 2042-07-15
Also published as: CN115263085B

Abstract

The invention discloses a coded lock with double codes, which comprises a coded seat, a coded shaft, a locking piece, a character wheel assembly, a lock body, an operating piece, a lock shaft and an unlocking elastic piece. The character wheel assembly is additionally provided with a management bushing on the basis of the traditional common bushing, and the outer side end faces of the character wheel assembly and the management bushing are respectively provided with a first unlocking groove and a second unlocking groove, so that the lock lug of the password shaft can be unlocked when being aligned with one unlocking groove, namely, the character wheel assembly has two password unlocking functions, wherein the common password corresponding to the common bushing can be used by a user in a conventional way, and the management password corresponding to the management bushing can be used for emergency so as to deal with special conditions such as common password loss; the common password and the management password are not interfered with each other when being used, the use is not influenced, and the condition that the lockset is scrapped due to the loss of the common password is avoided.

Description

Puzzle lock with double cipher

Technical Field

The invention relates to the technical field of coded locks, in particular to a coded lock with double codes.

Background

The coded lock, namely the character wheel lock, is a large category of lock, generally uses a group of numbers or symbols to unlock, and the user only needs to remember the set code, and does not need to configure a key, so that the coded lock has certain convenience in use.

Coded locks are usually mechanical locks, which are difficult to open if the user forgets the code. Therefore, in order to prevent the condition that the lock cannot be used due to the loss of the password, the password lock is generally provided with a mechanical lock cylinder, and the lock can be opened or the password can be retrieved by using an emergency key. However, the design has high requirements on the safety of the lock cylinder, otherwise, the safety level of the coded lock is influenced; meanwhile, the randomness of lost passwords is considered, the emergency key needs to be carried about, otherwise, the lock cannot be opened in time, inconvenience is caused, the emergency key also has the risk of loss, and the lock cannot be opened at that time.

Disclosure of Invention

The invention aims to provide a coded lock with double passwords, which has two unlocking modes of common passwords and password management and is convenient to use and manage.

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

a coded lock with double codes comprises a coded seat, a coded shaft, a locking piece, a character wheel assembly, a lock body, an operating piece, a lock shaft and an unlocking elastic piece; the coded seat is arranged in the lockset body and is provided with a plurality of parallel character wheel grooves; a group of character wheel assemblies are arranged in each character wheel groove; the password shaft is in sliding fit with the password seat and sequentially penetrates through the character wheel assemblies; a plurality of locking lugs are arranged in the axial direction of the password shaft, and a group of character wheel assemblies correspond to adjacent locking lugs; the character wheel assembly comprises a common bushing, a management bushing and a character wheel; the common bushing and the management bushing are axially adjacently matched on the coded shaft in a rotating mode, and the outer side end faces of the common bushing and the management bushing are respectively provided with a first unlocking groove and a second unlocking groove for the locking lug to be embedded; the character wheel is sleeved on the common bushing and the management bushing in a circumferential limiting manner; the locking piece is arranged on the outer wall of the password seat and is in transmission connection with the password shaft; the operating piece is arranged on the surface of the lockset body and is relatively fixed with the coded shaft; the lock shaft with the locking and unlocking functions movably penetrates through the lock body and is limited by the locking piece; the unlocking elastic piece is arranged in the lockset body and acts on the lock shaft; when the password of the character wheel is a common password or a management password, all the first unlocking grooves or the second unlocking grooves are aligned with the locking lugs, and the operating piece can drive the password shaft to axially move, so as to drive the locking piece to release the limit of the locking shaft.

A code changing assembly is further arranged in the lockset body; the code changing assembly comprises a code changing knob, a retainer and a code changing spring; the code changing knob is rotationally matched on the circumferential surface of the lockset body, and a code changing gradual-changing ramp is arranged on the circumference of the inner side surface of the lockset body; the holder is in sliding fit with the code seat and is provided with a character wheel hole for movably matching the character wheel; movable blocks are arranged at two ends of the retainer, and through holes for the password shaft to penetrate through are formed in the movable blocks; the code changing spring and the code changing knob are respectively positioned at two ends of the retainer, and the code changing spring acts on the movable blocks at the same side and enables the movable blocks at different sides to be matched on the code changing gradual-changing sloping platform; when the movable blocks on different sides are positioned at the low point of the code changing gradual change ramp, the movable blocks push the common bushing to separate from the character wheel.

Preferably, the difference between the width of the print wheel hole and the width of the print wheel is not smaller than the stroke of the common bushing for separating from the print wheel.

Preferably, the inner side surface of the code changing knob is also provided with a code checking bulge, the code checking bulge is arranged opposite to the end part of the code shaft and comprises an ascending inclined table and a descending inclined table which are connected with each other; when the movable block moves on the code-changing gradual-change ramp, the password shaft firstly climbs along the ascending ramp and then falls along the descending ramp.

A code searching component is also arranged in the lockset body; the code searching component comprises a code searching knob, a probe plate, a push plate and a code searching spring; the code searching knob is rotationally matched on the circumferential surface of the lockset body, and a code searching gradual change ramp is arranged on the circumference of the inner side surface of the lockset body; a code-searching lug is arranged at one end, close to the code-searching knob, of the push plate, the code-searching lug is movably matched on the code-searching gradual-changing ramp, and a lifting ramp block is arranged on the surface of the push plate; the probe board is arranged on the lifting inclined block, elastic probes corresponding to the character wheels are arranged on the probe board, and probe grooves for the probes to be movably matched are formed in the common lining; the code searching spring is arranged between the code seat and the probe board and is used for driving the probe board to move downwards along the lifting inclined block; when the code searching knob is rotated, the code searching gradual change sloping bench pushes the push plate to be far away from the code searching knob, and the probe plate is lifted towards the code seat through the lifting sloping block, so that the probe is tightly matched on the surface of the common bushing; when the character wheel is rotated to the correct code, the probe is embedded into the probe groove of the common bushing.

Preferably, the probe board is provided with a spring column for sleeving the code searching spring.

Preferably, the probe board is provided with a movable hole for movably matching the lifting inclined block.

Preferably, both ends of the probe are connected to the probe card through a crank arm.

The character wheel is provided with a mounting hole for mounting the common bushing and the management bushing, and the side wall of the mounting hole is provided with a plurality of limiting grooves at equal angular intervals; the general bushing is characterized in that at least one first limiting bulge is arranged on the circumferential surface of the general bushing, at least one second limiting bulge is arranged on the circumferential surface of the management bushing, and the first limiting bulge and the second limiting bulge are embedded in the limiting groove.

The character wheel grooves are arranged at equal intervals along the circumferential direction of the password seat; both ends of the password seat are provided with notches, and the password shaft is circumferentially matched in the notches in a limiting manner.

Preferably, both sides of the password shaft are provided with rotation stopping planes, and the rotation stopping planes are in clearance fit with the side walls of the notches.

The character wheel is in clearance fit with the side wall of the character wheel groove.

The locking piece comprises a limiting section, a pivoting section and a linkage section which are connected in sequence; the pin joint section is rotationally matched with the side surface of the password seat; the linkage section is vertically connected to one end of the pivoting section and is arranged opposite to the end face of the password seat; the password shaft is provided with a movable groove, and two sides of the movable groove are symmetrically provided with guide inclined planes; the linkage section is movably matched on one guide inclined plane along with the axial movement of the password shaft so as to drive the limiting section to swing and relieve the limitation of the lock shaft.

Preferably, the edge of the linkage section, which is movably matched with the movable groove, is provided with a rounded corner.

Preferably, a shaft part for the pivoting section to be in running fit is arranged on the side surface of the password seat.

The bottom surface of the lock body is provided with a locking groove for placing a locked object, and the peripheral surface of the lock body is provided with a locking hole communicated with the locking groove; the lock shaft is movably arranged in the locking hole in a penetrating way; the unlocking elastic piece is a spring and is arranged at one end, close to the locking groove, of the lock shaft.

Preferably, a C-shaped retainer ring is further arranged in the lockset body, and the diameter of the C-shaped retainer ring is larger than that of the locking hole; the lock shaft is provided with a movable ring groove for the C-shaped check ring to be movably matched, and the C-shaped check ring is sleeved in the movable ring groove.

Preferably, the outer end of the lock shaft is formed with a circle of limit flanges along the radial direction of the lock shaft, and the end of the unlocking elastic member acts on the limit flanges.

And the locking shaft is provided with a locking ring groove for the movable fit of the locking piece.

The lock body is also internally provided with a locking spring acting on the locking piece.

Preferably, the locking piece is provided with a third limiting protrusion for sleeving the end part of the locking spring.

The operating parts are provided with clamping jaws, and the clamping jaws penetrate through the through holes of the lock body and are connected with the end portions of the password shafts in a buckling mode.

After the technical scheme is adopted, the character wheel assembly is additionally provided with the management bushing on the basis of the traditional common bushing, the outer side end faces of the character wheel assembly and the management bushing are respectively provided with the first unlocking groove and the second unlocking groove, so that the lock lug of the password shaft can be unlocked when being aligned with one unlocking groove, namely, the character wheel assembly has the unlocking function of two passwords, wherein the common password corresponding to the common bushing can be used by a user in a conventional way, and the management password corresponding to the management bushing can be used for emergency so as to deal with special conditions such as loss of the common password; the common password and the management password are not interfered with each other and do not influence each other when in use; the management password can be set when leaving the factory, and a manager of a manufacturer or a user is in unified charge of management, so that the management password is not easy to lose, and the condition that the lockset is scrapped due to the loss of a common password is avoided.

Drawings

FIG. 1 is an exploded view of an embodiment of the present invention;

FIG. 2 is a perspective view of a wordlewheel assembly in accordance with an embodiment of the present invention;

FIG. 3 is an exploded view of a wordlewheel assembly in accordance with an embodiment of the present invention;

FIG. 4 is a perspective view of a cipher shaft according to an embodiment of the present invention;

FIG. 5 is a perspective view of a escape knob according to an embodiment of the present invention;

FIG. 6 is a perspective view of a cage according to an embodiment of the present invention;

FIG. 7 is a perspective view of a combination holder according to an embodiment of the present invention;

FIG. 8 is an exploded view of a code-seeking assembly in accordance with an embodiment of the present invention;

FIG. 9 is a schematic diagram illustrating the use of an embodiment of the present invention;

FIG. 10 is a sectional view of the lock shaft in a locked position according to an embodiment of the present invention;

FIG. 11 is a sectional view of the position of a password shaft in a locked state in accordance with an embodiment of the present invention;

FIG. 12 is a sectional view of the position of the lockout member in a lockout condition in accordance with an embodiment of the present invention;

FIG. 13 is a first cross-sectional view of a conventional combination lock of the present invention;

FIG. 14 is a second cross-sectional view of a conventional combination lock of the present invention;

FIG. 15 is a third cross sectional view of a conventional combination lock of the preferred embodiment of the present invention;

FIG. 16 is a cross-sectional view of the password-managed lock of the present invention

FIG. 17 is a second cross-sectional view of the managed code lock of the present invention;

FIG. 18 is a third cross-sectional view of the managed code lock of the present invention;

FIG. 19 is a cross-sectional view of a conventional combination according to an embodiment of the present invention;

FIG. 20 is a first cross-sectional view of a conventional combination being sought in accordance with an embodiment of the present invention;

FIG. 21 is a second cross-sectional view of the embodiment of the present invention looking for a normal password;

the reference numbers indicate:

1- - -a cipher seat; 11- - -a character wheel groove; 12- -a notch;

13- -a shaft portion; 2-cipher shaft; 21-a locking lug;

22-a rotation stop plane; 23- - -a movable slot; 231 — a guide ramp;

3-a locking member; 31- - -a spacing section; 311- -third stop tab;

32- - -a pivot section; 33-linkage section; 331- -rounding off;

4-a print wheel assembly; 41- -common bushing; 411 — first unlocking slot;

412- -first stop lobe; 413- -Probe slot; 42- -management liner;

421- -second unlocking slot; 422- -second stop tab; 43- -print wheel;

431-mounting holes; 432- -a retaining groove; 5- -a lock body;

5 a-upper lock body; 5 b-a lower lock body; 51- - -a locking groove;

52- -a locking hole; 53- -a through hole; 6- -an operating member;

61- -a pawl; 7- -a lock shaft; 71- -a movable ring groove;

72- -a position-defining flange; 73- -a locking ring groove; 8- -unlocking the elastic member;

9-C type retainer ring; 10- -a locking spring; 20-an escape assembly;

201- -escape knob; 2011-escape gradual change ramp; 2012-a ramp-up;

2013-descending ramp; 202- -a cage; 2021-wormwheel hole;

2022-active block; 2023-perforating; 203- -escape spring;

30-a code-seeking component; 301- -code-finding knob; 3011-code-finding gradual-change ramp;

302- -probe card; 3021-Probe; 3022-spring post;

3023-a removable well; 3024-crank arm; 303- -push plate;

3031-code-seeking bump; 3032-lifting the swash block; 304-code-seeking spring;

40- -locked article.

Detailed Description

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

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that the products of the present invention are usually placed in when in use, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are only used for the convenience of describing the embodiments of the present invention, but do not indicate or imply that the indicated devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the embodiments of the present invention, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.

Referring to fig. 1 to 8, the invention discloses a coded lock with double codes, which comprises a coded seat 1, a coded shaft 2, a locking member 3, a character wheel assembly 4, a lock body 5, an operating member 6, a lock shaft 7 and an unlocking elastic member 8;

the cipher seat 1 is provided with a plurality of parallel character wheel grooves 11; a group of character wheel assemblies 4 are arranged in each character wheel groove 11;

the password shaft 2 is in sliding fit with the password seat 1 and sequentially penetrates through the character wheel assemblies 4; a plurality of locking lugs 21 are arranged on the axial direction of the coded shaft 2, and a group of character wheel assemblies 4 correspond to the adjacent locking lugs 21;

the print wheel assembly 4 includes a general liner 41, a management liner 42, and a print wheel 43; the common bush 41 and the management bush 42 are axially adjacently rotationally fitted on the cipher shaft 2, and the outer end faces of the common bush and the management bush are respectively provided with a first unlocking groove 411 and a second unlocking groove 421 for the locking lug 21 to be embedded; the character wheel 43 is sleeved on the common bushing 41 and the management bushing 42 in a circumferential limiting manner;

the locking piece 3 is arranged on the outer wall of the cipher seat 1 and is in transmission connection with the cipher shaft 2;

the coded seat 1 is arranged in the lockset body 5;

the operating piece 6 is arranged on the surface of the lockset body 5 and is fixed relative to the password shaft 2 so as to push the password shaft 2 to move axially under the operation of a user;

the lock shaft 7 with the locking and unlocking functions is movably arranged in the lock body 5 in a penetrating way and is limited by the locking piece 3;

an unlocking spring 8 is arranged in the lock body 5 and acts on the lock shaft 7.

When the password of the character wheel 43 is a common password or a management password, all the first unlocking grooves 411 or the second unlocking grooves 421 are aligned with the locking projections 21, and the operating member 6 can drive the password shaft 2 to move axially, and further drive the locking member 3 to release the limit of the locking shaft 7.

In the locked state, the lock shaft 7 compresses the unlocking elastic piece 8 to be at the locked position, and is limited by the locking piece 3 without moving and keeping the locked state; when a user inputs a common password or manages the password and drives the password shaft 2 to move through the operating part 6, the password shaft 2 drives the locking part 3 and removes the limit of the locking shaft 7, at the moment, the locking shaft 7 starts to move under the elastic action of the unlocking elastic part 8 to leave the locking position, and the password lock completes unlocking.

Specific embodiments of the present invention are shown below.

The character wheel 43 is provided with an installation hole 431 for installing the common bush 41 and the management bush 42, and the side wall of the installation hole 431 is provided with a plurality of limit grooves 432 at equal angular intervals; the circumferential surface of the common bushing 41 is provided with at least one first limiting protrusion 412, the circumferential surface of the management bushing 42 is provided with at least one second limiting protrusion 422, the first limiting protrusion 412 and the second limiting protrusion 422 are embedded in the limiting groove 432, and the relative angle between the first limiting protrusion 412/the second limiting protrusion 422 and the character wheel 43 determines the correct password corresponding to the character wheel assembly 4. When the user dials the character wheel 43, the ordinary bushing 41 and the management bushing 42 will be driven to rotate synchronously on the password shaft 2, so as to input the ordinary password or the management password. In the following structure, when the common bush 41 is pushed out of the installation hole 431 of the character wheel 43, the common bush 41 and the character wheel 43 do not have a circumferential limit relationship any more, and at this time, the common bush 41 can be pushed back into the installation hole 431 after the character wheel 43 is turned, so that the purpose of changing the common password is achieved.

The character wheel grooves 11 are arranged at equal intervals along the circumferential direction of the code seat 1; both ends of the password seat 1 are provided with notches 12, and the password shaft 2 is circumferentially matched in the notches 12 in a limiting way. The cipher shaft 2 can move telescopically on the cipher seat 1 to drive the locking member 3 without rotation under the action of external force, so that the orientation of the locking protrusion 21 is kept unchanged all the time, and the working stability of the character wheel assembly 4 is ensured. In this embodiment, the locking protrusion 21 is disposed vertically upward.

Furthermore, both sides of the password shaft 2 are provided with rotation stopping planes 22, and the rotation stopping planes 22 are in clearance fit with the side walls of the notches 12, so that the purpose of circumferential limiting of the password shaft 2 is achieved.

The character wheel 43 is in clearance fit with the side wall of the corresponding character wheel groove 11, so that the character wheel 43 can rotate relative to the code base 1 and cannot displace in the axial direction of the code base 1.

The locking piece 3 comprises a limiting section 31, a pivoting section 32 and a linkage section 33 which are connected in sequence; the pivoting section 32 is rotatably matched with the side surface of the code seat 1; the linkage section 33 is vertically connected with one end of the pivoting section 32 and is arranged opposite to the end face of the password seat 1; the password shaft 2 is provided with a movable groove 23, and two sides of the movable groove 23 are symmetrically provided with guide inclined planes 231; the linking section 33 is movably engaged with the guide slope 231 of the combination shaft 2 along with the axial movement thereof to drive the restricting section 31 to swing to release the restriction of the lock shaft 7. Because two guiding inclined planes 231 of the movable groove 23 are symmetrically arranged, the locking piece 3 can be driven to swing in the same direction no matter which direction the password shaft 2 moves (when the common password and/or the managed password is correct), and the unlocking action is output.

Furthermore, the edge of the linkage section 33 movably matched with the movable groove 23 is provided with a rounded corner 331, so that the linkage section 33 moves on the guide inclined plane 231 more smoothly, and the operation hand feeling of the invention is further improved.

Meanwhile, the side surface of the code base 1 is provided with a shaft part 13 for the pivot joint section 32 to be in running fit with.

In this embodiment, 4 sets of character wheel assemblies 4 are provided, 4 character wheel grooves 11 are provided at equal intervals on the

code base

1, and 5 locking projections 21 are provided at equal intervals on the code shaft 2.

The bottom surface of the lock body 5 is provided with a locking groove 51 for placing the locked object 40, and the peripheral surface of the lock body 5 is provided with a locking hole 52 communicated with the locking groove 51; the lock shaft 7 is movably arranged in the locking hole 52 in a penetrating way; the unlocking elastic member 8 is a spring provided on the lock shaft 7 at an end near the locking groove 51. When the locking member 3 is no longer limited, the locking shaft 7 will be disengaged from the locking groove 51 under the action of the unlocking elastic member 8, thereby releasing the limitation on the object 40 to be locked; when the lock needs to be locked again, the lock shaft 7 can be limited again by pressing the lock shaft 7 on the side of the lock body 5, so that the lock shaft 7 retracts into the lock body 5 against the elastic force of the unlocking elastic member 8, and the locked object 40 in the locking groove 51 can be limited again by the lock shaft 7.

Furthermore, a C-shaped retainer ring 9 is also arranged in the lockset body 5, and the diameter of the C-shaped retainer ring 9 is larger than that of the locking hole 52; the locking shaft 7 is provided with a movable ring groove 71 for the C-shaped retainer ring 9 to be movably matched, and the C-shaped retainer ring 9 is sleeved in the movable ring groove 71. Through setting up C type retaining ring 9, can produce limiting displacement to lock axle 7 when lock axle 7 removes, prevent that lock axle 7 from directly falling out locking hole 52 under the effect of unblock elastic component 8.

Meanwhile, the outer end of the lock shaft 7 is formed with a ring of limit flange 72 protruding along its radial direction, and the end of the unlocking elastic member 8 acts on the limit flange 72 to provide elastic force to push the lock shaft 7 away from the locking groove 51.

The locking shaft 7 is provided with a locking ring groove 73 for movably matching the locking member 3. When the tip of locking piece 3 inlays and establishes in locking annular groove 73, locking piece 3 produces limiting displacement to lock axle 7, and lock axle 7 can not carry out axial displacement again.

The lock body 5 is also provided with a locking spring 10 acting on the locking member 3 (the locking spring 10 mainly acts on the limiting section 31). When the cipher shaft 2 is not subjected to an external force (i.e., not pushed by a user), the locking member 3 is always biased toward the lock shaft 7 by the locking spring 10 to maintain a locked state.

Further, the locking member 3 is provided with a third limiting protrusion 311 for sleeving the end of the locking spring 10, so that the position of the locking spring 10 on the locking member 3 can be effectively maintained, and the functional stability of the locking spring 10 is ensured.

The operating member 6 is a push button structure, and is provided with a claw 61, and the claw 61 penetrates through the through hole 53 of the lock body 5 and is connected with the end part of the coded shaft 2 in a buckling manner, so that the relative fixation between the two is realized.

The lock body 5 is also internally provided with a code changing assembly 20; the escape assembly 20 comprises an escape knob 201, a holder 202 and an escape spring 203; the code changing knob 201 is rotationally matched on the circumferential surface of the lock body 5, and a code changing gradual change sloping platform 2011 is arranged on the circumference of the inner side surface of the lock body; the retainer 202 is in sliding fit with the code seat 1 and is provided with a character wheel hole 2021 for movably matching the character wheel 43; the two ends of the retainer 202 are provided with movable blocks 2022, and the movable blocks 2022 are provided with through holes 2023 for the password shaft 2 to penetrate through; the code changing spring 203 and the code changing knob 201 are respectively positioned at two ends of the retainer 202, the code changing spring 203 acts on the movable block 2022 at the same side, and the movable block 2022 at the opposite side is matched on the code changing gradual-change sloping platform 2011; when the movable block 2022 on the opposite side is located at the low point of the escape ramp 2011, the movable block 2022 pushes the common bushing 41 to separate from the print wheel 43, and at this time, the password can be changed. Referring to fig. 9, the common scenario of the combination lock is that the lock body 5 is inserted into a lock slot formed by two locked objects 40, so that the side surface of the lock body 5 is shielded in the locked state, and the operation of changing the common password is possible only after the lock is unlocked; in addition, the safety performance of the coded lock can be ensured through the code verification bulge.

Further, the difference between the width of the character wheel hole 2021 and the width of the character wheel 43 is not smaller than the distance of the ordinary bushing 41 from the character wheel 43, so as to ensure that the retainer 202 is not axially limited by the character wheel 43 when moving toward the escape knob 201 under the action of the escape spring 203 until the first limit protrusion 412 of the ordinary bushing 41 completely disengages from the limit groove 432 of the character wheel 43.

Meanwhile, the inner side surface of the escape knob 201 is also provided with a code checking protrusion, the code checking protrusion is arranged opposite to the end part of the password shaft 2 and comprises an ascending ramp 2012 and a descending ramp 2013 which are connected with each other; when the movable block 2022 moves on the escape gradient ramp 2011, the password shaft 2 firstly climbs along the ascending ramp 2012 and moves rightward, and then falls along the descending ramp 2013 and moves leftward, so that only when the common password is correct, the password shaft 2 can move rightward without being blocked by the common bushing 41, that is, the escape knob 201 can normally rotate, whether the current common password is correct is verified before the operation of changing the common password is executed, only when the common password is correct, the common password can be changed, otherwise, after the escape knob 201 rotates a small angle (which is smaller than the rotation angle during escape operation), the common bushing 41 can not rotate due to axial limiting of the password shaft 2, and further the safety level of the lockset is improved.

The lock body 5 is also internally provided with a code searching assembly 30; the code searching component 30 comprises a code searching knob 301, a probe board 302, a push plate 303 and a code searching spring 304; the code searching knob 301 is rotationally matched on the circumferential surface of the lockset body 5, and a code searching gradual-change ramp 3011 is arranged on the circumference of the inner side surface of the lockset body; one end of the push plate 303 close to the code searching knob 301 is provided with a code searching bump 3031, the code searching bump 3031 is movably matched on the code searching gradual-change inclined platform 3011, and the surface of the push plate 303 is provided with a lifting inclined block 3032; the probe board 302 is arranged on the lifting inclined block 3032, an elastic probe 3021 corresponding to the character wheel 43 is arranged on the probe board, and a probe groove 413 for movably matching the probe 3021 is arranged on the common lining 41; the code searching spring 304 is arranged between the code seat 1 and the probe board 302 and is used for driving the probe board 302 to move downwards along the lifting inclined block 3032; when the code searching knob 301 is rotated, the code searching gradual-change inclined table 3011 pushes the push plate 303 to be far away from the code searching knob 301, and the probe card 302 is lifted towards the code base 1 by the lifting inclined block 3032, so that the probe 3021 is tightly fitted on the surface of the common lining 41, and when the character wheel 43 is rotated to the correct code, the probe 3021 is embedded in the probe groove 413 of the common lining 41.

Further, the probe card 302 is provided with a spring post 3022 for the code-searching spring 304 to be sleeved on, for limiting the matching position of the code-searching spring 304 on the probe card 302.

Meanwhile, the probe card 302 is provided with a movable hole 3023 for movably matching the lifting inclined block 3032.

Furthermore, both ends of the probe 3021 are connected to the probe card 302 through the crank arm 3024, so that the probe 3021 is elastically fitted.

The lock body 5 is provided with a plurality of corresponding grooves and cavities according to the shape of the internal parts, and the lock body 5 can be designed into an upper lock body 5a and a lower lock body 5b in a split manner, so that the installation of the parts in the lock body 5 can be realized, various cavities in the lock body 5 can be machined or formed as required, and the upper lock body 5a and the lower lock body 5b can be locked by screws to complete the assembly.

Referring to fig. 10 to 21, the operation of the present invention is explained as follows:

(1) locked state

Referring to fig. 10 to 12, after the lock is unlocked, the operating member 6 returns to the locked state, and the locking member 3 is continuously subjected to the elastic force of the locking spring 10; after the lock shaft 7 is pushed into the lock body 5, the lock shaft 7 is inserted into the locking groove 51 until the locking position is reached, and the limiting section 31 of the locking piece 3 is clamped into the locking ring groove 73 under the action of elasticity, so that the locking function is realized.

(2) Ordinary password unlocking process

Referring to fig. 13 to 15, when the ordinary password is used for unlocking, the operation member 6 can drive the password shaft 2 to push in the positive direction (rightward in the drawing) after the password is correct, and simultaneously push the locking member 3 to rotate, the locking member 3 is separated from the locking ring groove 73 of the lock shaft 7 after rotating, and at the moment, the lock shaft 7 is ejected out of the lock body 5 by the elastic force of the unlocking elastic member 8, so that the ordinary password is unlocked.

(3) Managing a password unlocking process

Referring to fig. 16 to 18, when the managed password is used to unlock the lock, the operation element 6 can drive the password shaft 2 to push in the opposite direction (leftward in the drawing) after the password is correct, and simultaneously push the locking member 3 to rotate, so that the locking member 3 is separated from the locking ring groove 73 of the lock shaft 7 after rotating, and at this time, the lock shaft 7 is ejected out of the lock body 5 by the elastic force of the unlocking elastic member 8, thereby realizing the managed password unlocking. In general, the general password is different from the management password, and the password axis 2 cannot be pushed forward.

(4) Changing a common password procedure

Referring to fig. 19, after the normal combination is correct, the first unlocking slot 411 of the normal bushing 41 is aligned with the locking protrusion 21 of the combination shaft 2, and the combination shaft 2 can be pushed to the right; the code changing knob 201 is rotated, the code changing knob 201 pushes the code shaft 2 to the right from the lowest point of the code checking protrusion to the highest point, and meanwhile, the retainer 202 and the common bushing 41 retreat from the highest point to the lowest point of the code changing ramp 2011, so that the common bushing 41 is completely separated from the character wheel 43; at this time, the character wheel 43 is dialed according to the preset number of the user, the escape knob 201 is turned back to the original position, the retainer 202 and the common bushing 41 are pushed to the character wheel 43, the common bushing 41 and the character wheel 43 are matched at this time, and the preset password of the user is successfully replaced.

(5) Process for finding common password

Referring to fig. 20 and 21, after the lock is opened by using the managed password, if the ordinary password needs to be retrieved again, the code-seeking knob 301 is rotated, the code-seeking gradual-change sloping platform 3011 of the code-seeking knob 301 pushes the push plate 303, the push plate 303 pushes the probe board 302 upwards again, at this time, the order of the probe 3021 is tightly attached to the circumferential surface of the ordinary bushing 41, and meanwhile, the curved arms 3024 at the two ends of the probe 3021 are deformed to continuously provide the upward pushing force for the probe 3021; at the moment, the character wheels 43 are rotated one by one to retrieve the common codes, when the correct codes are rotated, the probe groove 413 of the common bushing 41 is aligned with the probe 3021, the probe 3021 is clamped into the probe groove 413 of the bushing under the pushing force, at the moment, the character wheels 43 and the bushing stop rotating, namely, the correct codes are retrieved, all the codes are retrieved in the same way, the knob is rotated to the original position, and then the codes can be replaced by the new codes preset by the user in the mode (4), so that the use safety of the lock is ensured.

Through the scheme, the character wheel assembly 4 is additionally provided with the management bush 42 on the basis of the traditional common bush 41, the outer side end faces of the two management bush are respectively provided with the first unlocking groove 411 and the second unlocking groove 421, so that the lock lug 21 of the password shaft 2 can be unlocked when being aligned with one unlocking groove, namely, the character wheel assembly has two password unlocking functions, wherein the common password corresponding to the common bush 41 can be used by a user in a conventional way, and the management password corresponding to the management bush 42 can be used for emergency so as to deal with special situations such as common password loss; the common password and the management password are not interfered with each other and do not influence each other when in use; the management password can be set when leaving the factory, and is uniformly managed by manufacturers, users, managers and the like, so that the management password is not easy to lose, and the condition that the lockset is scrapped due to the loss of common passwords is avoided.

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

Claims

1. The utility model provides a take trick lock of double-password which characterized in that:

the lock comprises a password seat, a password shaft, a locking piece, a character wheel assembly, a lock body, an operating piece, a lock shaft and an unlocking elastic piece;

the coded seat is arranged in the lockset body and is provided with a plurality of parallel character wheel grooves; a group of character wheel assemblies are arranged in each character wheel groove;

the password shaft is in sliding fit with the password seat and sequentially penetrates through the character wheel assemblies; a plurality of locking lugs are arranged in the axial direction of the coded shaft, and a group of character wheel assemblies correspond to each other between every two adjacent locking lugs;

the character wheel assembly comprises a common lining, a management lining and a character wheel; the common bushing and the management bushing are axially adjacently matched on the coded shaft in a rotating mode, and the outer side end faces of the common bushing and the management bushing are respectively provided with a first unlocking groove and a second unlocking groove for the locking lug to be embedded; the character wheel is sleeved on the common bushing and the management bushing in a circumferential limiting manner;

the locking piece is arranged on the outer wall of the password seat and is in transmission connection with the password shaft;

the operating piece is arranged on the surface of the lockset body and is relatively fixed with the coded shaft;

the lock shaft with the locking and unlocking functions movably penetrates through the lock body and is limited by the locking piece;

the unlocking elastic piece is arranged in the lockset body and acts on the lock shaft;

when the password of the character wheel is a common password or a management password, all the first unlocking grooves or the second unlocking grooves are aligned with the locking lugs, and the operating piece can drive the password shaft to axially move, so as to drive the locking piece to release the limit of the locking shaft.

2. The double-code combination lock with double code according to claim 1, wherein:

a code changing assembly is further arranged in the lockset body; the code changing assembly comprises a code changing knob, a retainer and a code changing spring; the code changing knob is rotationally matched on the circumferential surface of the lockset body, and a code changing gradual-changing ramp is arranged on the circumference of the inner side surface of the lockset body; the holder is in sliding fit with the code seat and is provided with a character wheel hole for movably matching the character wheel; movable blocks are arranged at two ends of the retainer, and through holes for the password shafts to penetrate through are formed in the movable blocks; the code changing spring and the code changing knob are respectively positioned at two ends of the retainer, and the code changing spring acts on the movable blocks at the same side and enables the movable blocks at different sides to be matched on the code changing gradual-changing ramp;

when the movable blocks on different sides are positioned at the low points of the code changing gradual change ramp, the movable blocks push the common bushings to be separated from the character wheels.

3. The double-code combination lock with double code according to claim 2, wherein:

the difference between the width of the character wheel hole and the width of the character wheel is not smaller than the stroke of the common bushing which is separated from the character wheel.

4. The combination lock with dual cipher according to claim 2, wherein:

the inner side surface of the code changing knob is also provided with a code checking bulge, the code checking bulge is arranged opposite to the end part of the password shaft and comprises an ascending inclined platform and a descending inclined platform which are connected with each other; when the movable block moves on the code changing gradual change ramp, the password shaft firstly climbs along the ascending ramp and then falls along the descending ramp.

5. The double-code combination lock with double code according to claim 1, wherein:

a code searching component is also arranged in the lockset body; the code searching component comprises a code searching knob, a probe plate, a push plate and a code searching spring; the code-searching knob is rotationally matched on the circumferential surface of the lockset body, and a code-searching gradual-changing ramp is arranged on the circumference of the inner side surface of the lockset body; a code searching lug is arranged at one end, close to the code searching knob, of the push plate, the code searching lug is movably matched on the code searching gradual change ramp, and a lifting inclined block is arranged on the surface of the push plate; the probe board is arranged on the lifting inclined block, elastic probes corresponding to the character wheels are arranged on the probe board, and probe grooves for the probes to be movably matched are formed in the common lining; the code searching spring is arranged between the code seat and the probe board and is used for driving the probe board to move downwards along the lifting inclined block;

when the code searching knob is rotated, the code searching gradual change inclined table pushes the push plate to be far away from the code searching knob, and the probe board is lifted towards the code seat through the lifting inclined block, so that the probe is tightly matched on the surface of the common lining; when the character wheel is rotated to the correct code, the probe is embedded into the probe groove of the common bushing.

6. The double-code combination lock with double code according to claim 1, wherein:

7. The double-code combination lock with double code according to claim 1, wherein:

the character wheel grooves are arranged at equal intervals along the circumferential direction of the password seat; notches are formed in two ends of the password seat, and the password shaft is circumferentially matched in the notches in a limiting manner; the password shaft is characterized in that rotation stopping planes are arranged on two sides of the password shaft and are in clearance fit with the side walls of the notches.

8. The combination lock with dual cipher according to claim 1, wherein:

the locking piece comprises a limiting section, a pivoting section and a linkage section which are connected in sequence; the pivoting section is rotationally matched with the side surface of the password seat; the linkage section is vertically connected to one end of the pivoting section and is arranged opposite to the end face of the password seat; the password shaft is provided with a movable groove, and two sides of the movable groove are symmetrically provided with guide inclined planes; the linkage section is movably matched on one guide inclined plane along with the axial movement of the password shaft so as to drive the limiting section to swing and relieve the limitation of the lock shaft.

9. The double-code combination lock with double code according to claim 1, wherein:

10. The double-code combination lock with double code according to claim 9, wherein:

a C-shaped check ring is further arranged in the lockset body, and the diameter of the C-shaped check ring is larger than that of the locking hole; the lock shaft is provided with a movable ring groove for the C-shaped check ring to be movably matched, and the C-shaped check ring is sleeved in the movable ring groove.

11. The double-code combination lock with double code according to claim 9, wherein:

the outer side end of the lock shaft is provided with a circle of limiting flanges in a protruding mode along the radial direction of the lock shaft, and the end portion of the unlocking elastic piece acts on the limiting flanges.

12. The double-code combination lock with double code according to claim 1, wherein:

13. The double-code combination lock with double code according to claim 1, wherein:

a locking spring acting on the locking piece is also arranged in the lockset body; the locking piece is provided with a third limiting protrusion for sleeving the end part of the locking spring.