CN113431435B - Public mode trick lock with emergent function autozero - Google Patents

Abstract

The invention discloses an automatic-zeroing public mode coded lock with an emergency function, which comprises a shell, wherein a coded box assembly and a knob are arranged on the shell, the coded box assembly comprises an installation frame, and the installation frame is provided with a character wheel assembly and an elastic sheet assembly; the mounting frame is provided with a rotation stopping frame and a pawl member, and the rotation stopping frame is abutted against the character wheel assembly through an elastic piece assembly; the character wheel assembly comprises a central shaft, a coupling wheel and a character wheel, the character wheel is integrally formed with a cam, and the knob is in driving fit with the pawl piece through a driving structure; the coupling wheel is provided with a positioning hole and a groove, the cam is provided with a positioning column, and the positioning column is coupled with the positioning hole; the rotation stopping frame is provided with a bulge, a rotation stopping block is integrally formed on the rotation stopping frame, and the knob is provided with a locking block; the central shaft is provided with a reset elastic part and a fixed block, and the knob is provided with an avoiding ring groove. The invention has the following advantages and effects: the new mechanical structure of this scheme utilization can realize automatic zeroing, reset the password, has the effect of peeping-proof, high security, convenient to use.

Description

Public mode trick lock with emergent function autozero

Technical Field

The invention relates to the technical field of coded locks, in particular to a coded lock with an emergency function and an automatic zero-resetting public mode.

Background

In life, in order to improve the anti-theft performance of a mechanical lock, a password mechanism is often arranged in the mechanical lock, and the lock can be mechanically unlocked only after a password is input correctly.

The character wheel coded lock has the advantages of convenience of an electronic lock and stability of a key mechanical lock, and is wide in application range in the market. The existing character wheel coded lock usually comprises a coded locking part and an emergency key unlocking part, and can be unlocked independently, when the coded locking part is unlocked, the current character wheel coded lock still can display correct codes after unlocking or locking, a user is required to actively dial the messy codes to prevent the codes from being leaked, the operation is inconvenient, the user easily causes the codes to be leaked due to forgetting to dial the messy codes, and the safety is low.

Disclosure of Invention

The invention aims to provide an automatic zeroing public mode coded lock with an emergency function, which can realize automatic zeroing and password resetting and has the effects of peeping prevention, high safety and convenience in use.

The technical purpose of the invention is realized by the following technical scheme: a public mode coded lock with an emergency function and an automatic zero resetting function comprises a shell, wherein a coded box assembly and a knob are arranged on the shell, the coded box assembly comprises a mounting frame, and the mounting frame is provided with a character wheel assembly and an elastic sheet assembly;

the mounting frame is rotatably provided with a rotation stopping frame and a pawl member, and the rotation stopping frame is abutted against the character wheel assembly through an elastic piece assembly; the character wheel assembly comprises a central shaft, a plurality of coupling wheels and character wheels, the coupling wheels and the character wheels are sleeved on the central shaft, the character wheels are integrally formed with cams, the pawl members are in poking fit with the cams, and the knobs are in driving fit with the pawl members through driving structures;

the driving structure comprises an extension column integrally formed on the pawl and a slope-shaped groove formed in the side wall of the knob, the mounting frame is correspondingly provided with an extension hole for the extension column to extend out, the extension column is embedded and matched with the slope-shaped groove, and when the knob rotates, the slope-shaped groove drives the extension column to move up and down;

the coupling wheel is provided with a positioning hole and a groove, the cam is correspondingly provided with a positioning column, and the positioning column is coupled with the positioning hole; the rotation stopping frame is provided with a bulge which is matched with the groove in an embedded mode, a rotation stopping block is further integrally formed on the rotation stopping frame, the knob is provided with a locking block, and the rotation stopping block is matched with the locking block in a rotation stopping mode;

one end of center pin is equipped with the elastic component that resets, and the other end of center pin is equipped with the fixed block, and the knob has been seted up and has been dodged the annular, and when the unblock, the elastic component that resets orders about the fixed block and stretches into and dodge the annular.

By adopting the technical scheme, in an initial state (during locking), the lug on the rotation stopping frame is pressed down under the action of the coupling wheel, so that the rotation stopping block is positioned at a lower point and is in rotation stopping fit with the locking block, at the moment, the knob cannot rotate, and the coupling wheel and the cam are in a complete coupling state; when using the password unblock, dial the commentaries on classics character wheel, when the character wheel rotated, the character wheel passed through the cam and drives the coupling wheel and rotate, when the character wheel all was located correct password position, the recess of coupling wheel just is just to the arch of only revolving rack, and the shell fragment subassembly orders about only to lift on the only revolving rack for protruding and recess looks gomphosis, only revolving rack drives simultaneously and only lifts on the commentaries on classics piece and be located the upper locus. Therefore, the locking block and the rotation stopping block form avoidance, and the knob can be rotated to unlock. When the knob is rotatory, can drive the pawl spare through drive structure and rise and act on the cam, stir the cam and rotate and reset, the cam drives the character wheel and rotates and reset to "0" position, so, only need can realize returning to zero automatically in the process of unblanking and locking through rotatory knob, in time reset can effectively prevent peeping, has the higher effect of security. After unlocking, the central shaft drives the upper coupling wheel to displace in the direction away from the character wheel along the axial direction under the elastic force of the reset elastic part, so that the positioning column and the positioning hole are in a separated state, when the knob is reversely rotated and locked, the central shaft is pushed to reversely displace to drive the coupling wheel to be coupled with the cam again, then the pawl piece is driven again to stir the cam to reset, the character wheel, the cam and the coupling wheel can synchronously rotate, the character wheel returns to zero, the groove of the coupling wheel is far away from the bulge of the rotation stopping frame, so that the rotation stopping frame is pressed down to enable the rotation stopping block to be positioned at the lower position again and locked with the locking block, can realize the setting of new password simultaneously at the process of locking, so, can realize that the password is all inequality at every turn, avoids former password to be remembered by other people, has higher security, and the password newly establishes the process also more convenient.

The invention is further provided with: the cam is set as a logarithmic spiral wheel; the drive structure includes integrated into one piece in the extension post of pawl, set up in the domatic groove of knob lateral wall, and the mounting bracket correspondence is seted up and is supplied to extend the hole that stretches out of post, extends post and the cooperation of domatic groove embedding, and when the knob rotated, the domatic groove drove and extends the post up-and-down motion.

Through adopting above-mentioned technical scheme, when the knob rotated for the slope shape groove removes to the extension post relatively, and the extension post removes to the trough peak again from the trough valley in the slope shape inslot, and this in-process, the process that reciprocates can be realized along the slope shape groove to the extension post, accomplishes the process of stirring of a pawl piece, so, when the trick lock deciphers the back or locks, the rotatory knob unblanked or closed and to realize the indiscriminate sign indicating number process when locking. The anti-peeping effect can be achieved, and the safety is high.

The invention is further provided with: the front end of the positioning column is provided with an arc-shaped end face, and a displacement gap is formed between the fixing block and the coupling wheel; the coupling wheel is provided with a notch communicated with the groove, the protrusion is provided with a lug matched with the notch, the knob is provided with an embedded groove, and when the fixed block is positioned in the embedded groove, the arc-shaped end face is coupled with the positioning hole.

By adopting the technical scheme, when the fixed block is correspondingly positioned in the embedded groove in the rotation process of the knob, the fixed block pushes the central shaft to axially displace for a certain distance, so that the arc-shaped end surface of the positioning column correspondingly extends into the positioning hole, but the non-positioning column is completely inserted into the positioning hole, and the password can be cleared and reset at the position; the cleaning process is as follows: the character wheels are sequentially shifted to enable each character wheel to rotate by at least 360 degrees, and in the rotating process of the character wheels, the arc-shaped end faces are coupled with the positioning holes, so that the coupling wheels can be driven to rotate until the grooves of the coupling wheels correspond to the lug parts. In the rotation process of the character wheel, when the coupling wheel is not shifted to the position corresponding to the groove and the lug, the end face of the coupling wheel cannot axially displace under the resisting and limiting action of the lug; when the groove rotates to correspond to the bump, the coupling wheel moves away from the cam along the axial direction of the central shaft under the guiding action of the arc-shaped end face along with the rotation of the character wheel, finally the coupling action between the coupling wheel and the character wheel disappears, and at the moment, the groove of the coupling wheel corresponds to the protrusion. The other character wheels are sequentially turned, when the grooves of the coupling wheels corresponding to all the character wheels correspond to the protrusions, the rotation stopping frame is lifted to move under the action of the elastic force of the elastic sheet assembly, the protrusions are correspondingly embedded in the grooves, and meanwhile, the protrusions correspondingly extend into the notches, so that the password clearing process can be completed. Therefore, the password can be restored to the factory setting function, the effect of economy and convenience is achieved, the password lock does not need to be replaced when the password is forgotten, and the resetting process is rapid and simple.

The invention is further provided with: the elastic component that resets sets up to reset spring, and the cover is equipped with the retaining ring on the center pin, and the one end of elastic component that resets supports in the retaining ring, and the other end of elastic component that resets supports in the mounting bracket.

Through adopting above-mentioned technical scheme, when resetting the password under the state of unblanking, stir character wheel to new password, after new password setting is accomplished, the knob promotes the center pin and removes, makes the coupling wheel be close to the cam and realizes the coupling.

The invention is further configured as follows: the elastic sheet component comprises an elastic sheet main body, a plurality of elastic sheets and an elastic shifting sheet, wherein the elastic sheets and the elastic shifting sheet are arranged on the elastic sheet main body, the elastic sheets are supported on the rotation stopping frame, so that the rotation stopping frame always has the trend of moving towards the character wheel component, and the elastic shifting sheet is supported on the character wheel.

Through adopting above-mentioned technical scheme, because elasticity plectrum supports in the character wheel lateral wall, stir the in-process when the character wheel, elasticity plectrum intermittent type nature bullet moves, stir the in-process when the character wheel and can produce more obvious stirring and feel, can improve stirring feeling to a certain extent.

The invention is further provided with: a lock core component and a straight chute are arranged in the knob, and the lock core component drives the lock block to move along the straight chute; the through hole that supplies the locking piece to stretch out is seted up to the knob, and the lock core subassembly orders about the locking piece through transmission structure and removes, stretches out the through hole as the locking piece, and only changes the frame and when being pushed down by the coupling wheel, the locking piece with only change a backstop cooperation, only change the piece and be equipped with the direction cambered surface, direction cambered surface and locking piece direction cooperation.

By adopting the technical scheme, in the initial state, the code case assembly is in a locking state, and the locking block is matched with the rotation stopping block in a stopping way, so that the knob cannot rotate and cannot be unlocked; when forgetting the unblock of the emergent key that needs to adopt under the circumstances of password, insert emergent key in the lock core subassembly, rotate certain angle, can drive the locking piece motion through transmission structure, make the locking piece retract to the knob in along straight spout, owing to formed between the locking piece and the rotation stopping piece this moment and dodged, therefore, can rotate certain angle with the knob, make the locking piece correspond and cross the rotation stopping piece, reverse rotation emergent key again afterwards, make the locking piece stretch out the knob again, this moment, can pull out emergent key and in time return to administrator's department, along the rotatory knob of same direction of rotation, can realize unblanking. When using up the back and need lock again, only need the reversal rotate the knob make it reset can, the knob is rotating the in-process, drive the locking piece motion that stretches out, when the locking piece supports on the piece that splines, under the guide effect of the direction cambered surface of the piece that splines, make the piece that splines pressed down relatively, can form on horizontal position between the two and dodge, after the locking piece crossed the piece that splines, the piece that splines resets again, the piece that splines once more with form between the locking piece and support and keep off, can realize the locking, the knob can't rotate the unblock this moment. So, when adopting emergent key unblock, both can pull out the key after unblanking, also can keep somewhere, have more convenient, the higher effect of security of use.

The invention is further provided with: the lock core assembly comprises a lock body, a plurality of locking plates arranged on the lock body and a rotating block connected to the lock body, the transmission structure comprises an eccentric shaft arranged on the rotating block and a stop block correspondingly arranged on the lock block, and when the rotating block drives the eccentric shaft to rotate, the side wall of the eccentric shaft abuts against the stop block to drive the lock block to move; a pressing spring is arranged in the knob and drives the locking block to always have a movement trend of extending out of the through hole.

By adopting the technical scheme, after the emergency key is inserted into the lock body and the lock body is rotated, the eccentric shaft on the rotating block can be driven to relatively displace, and the side wall of the eccentric shaft abuts against the stop block in the moving process of the eccentric shaft, so that the lock block can be pushed to retract towards the knob; after the emergency key rotates the lock cylinder assembly reversely, the acting force of the eccentric shaft on the stop block is removed, and the lock block can move outwards towards the through hole under the action of the elastic force of the abutting spring and penetrates out of the knob again.

The invention is further provided with: the locking piece is provided with a limiting hole, one end of the abutting spring abuts against the limiting hole, and the other end of the abutting spring abuts against the inner wall of the knob.

Through adopting above-mentioned technical scheme, the one end of supporting tight spring stretches into in spacing downthehole, can play certain limiting displacement to supporting tight spring, prevents that it from taking place the displacement and becoming invalid at flexible in-process.

The invention is further provided with: the whole setting of locking piece is the zigzag, and the locking piece is including preceding tip and back tip, and preceding tip corresponds to the through hole, and the through-hole has still been seted up to the knob lateral wall, and the back tip corresponds the through-hole, and shells inner wall corresponds has seted up the spacing groove, and when the knob rotated, back tip and spacing cooperation in groove.

Through adopting above-mentioned technical scheme, when the relative straight spout of locking piece removes and makes preceding tip retract to the knob in, the back tip stretches out in the through-hole relatively, when making the knob rotate the in-process in order to dodge the anti-rotation piece, the back tip removes in the spacing inslot, when the lateral wall of until the anti-rotation piece offsets with the lateral wall of spacing groove, can reverse emergent key, make locking piece reverse displacement once more, the back tip retracts to the knob in, preceding tip stretches out, thus, through the spacing cooperation of back tip and spacing groove, the rotatory angle of knob can in time be fed back, the suggestion user rotates emergent key.

The invention is further provided with: a movable sleeve is coaxially arranged in the knob, an expansion spring is arranged between the movable sleeve and the knob, and the expansion spring drives the movable sleeve to extend out of the knob all the time; the outer wall of the movable sleeve is provided with an arc-shaped surface and a plane tangent surface, and a transition inclined surface is formed between the plane tangent surface and the arc-shaped surface at one side; when the knob rotates, the fixed block moves from the arc-shaped surface to the tangent plane, and the movable sleeve is pressed into the knob under the guiding action of the transition inclined surface, and the fixed block is positioned in the avoidance annular groove; the movable sleeve is further provided with a positioning groove adjacent to the embedded groove, the positioning groove is communicated with the avoidance ring groove, the positioning groove is provided with a first leading-out surface, and the embedded groove is provided with a second leading-out surface.

By adopting the technical scheme, when the fixed block is abutted against the arc-shaped surface, the coupling structure is in a complete coupling state; when the knob rotates for a certain angle, the fixed block is transited to the avoidance ring groove through the tangent plane and the transition inclined plane, meanwhile, the fixed block presses the moving sleeve upwards into the knob, the telescopic spring is compressed, and when the knob rotates to unlock, the fixed block moves in the avoidance ring groove. When the front end of fixed block corresponds and is located the constant head tank below, make the removal cover stretch out downwards under expanding spring's spring action, the fixed block correspondence inlays in the constant head tank, and the contra-rotation knob makes the fixed block break away from the constant head tank and inlay in the embedded groove under the guide effect of first derivation face afterwards, and further syntropy rotates the knob, makes the fixed block break away from the embedded groove gyration and resets under the guide effect of second derivation face.

In conclusion, the invention has the following beneficial effects:

1. the mode that the pawl piece is rotationally arranged in the mounting rack is adopted, the pawl piece is in driving fit with the knob through the driving structure, the cam can be stirred through the pawl piece by rotating the knob, so that the character wheel automatically returns to zero, and the character wheel can be timely reset to effectively prevent peeping, so that the mounting rack has a high safety effect;

2. the mode that the coupling wheel is provided with the groove and the anti-rotation frame is provided with the protrusion is adopted, when the password input by the character wheel is the correct password, the elastic piece assembly can drive the anti-rotation frame to be lifted, so that the protrusion is correspondingly embedded into the groove, and meanwhile, the anti-rotation block is driven to be lifted, so that the anti-rotation block and the locking block are avoided, and the knob can be rotated to realize unlocking;

3. in the unlocking state (public state), the coupling wheel is coupled with the cam, and the new password can be set by rotating the character wheel, so that the passwords are different every time, the original password is prevented from being memorized by other people, the safety is high, and the password setting process is convenient;

4. the mode that the arc-shaped end face is arranged at the front end of the positioning column is adopted, when the arc-shaped end face is coupled with the positioning hole, the character wheels are sequentially shifted, so that after each character wheel rotates at least 360 degrees, the password can be cleared, the function of restoring the password to factory settings is realized, the effect of economy and convenience is achieved, when the password is forgotten, the password lock does not need to be replaced, and the resetting process is rapid and simple;

5. the mode that adopts to set up the direction cambered surface at the locking piece, and during locking, the locking piece that stretches out and the cooperation of direction cambered surface direction can be pressed down relatively with the locking piece of stopping rotating and form dodging, and the locking piece locking that resets of being convenient for, so, when using emergent key unblock, both can pull out the key after unblanking, also can keep somewhere, have and use more convenient, the higher effect of security.

Drawings

Fig. 1 is a schematic diagram of the overall structural relationship of the embodiment.

Fig. 2 is a schematic diagram of the internal structural relationship of the embodiment.

Fig. 3 is an exploded view of an embodiment, wherein the housing is not shown.

Fig. 4 is a schematic structural relationship diagram of the coupling wheel and the anti-rotation frame of the embodiment.

FIG. 5 is a schematic structural diagram of a knob in the embodiment.

FIG. 6 is a schematic structural diagram of another view angle of the knob in the embodiment.

Fig. 7 is a sectional view of the knob in the embodiment.

Fig. 8 is a schematic structural relationship diagram of the housing of the embodiment.

Fig. 9 is a top view of the housing of the embodiment.

Fig. 10 is a cross-sectional view of the embodiment of the print wheel assembly in structural relationship to the anti-rotation frame, in an uncoupled state.

Fig. 11 is a cross-sectional view of the embodiment of the print wheel assembly in structural relationship to the anti-rotation frame, in a fully coupled state.

Fig. 12 is a sectional view showing the structural relationship between the print wheel assembly and the anti-rotation frame of the embodiment, in a state where only the arc-shaped end surfaces are coupled.

In the figure: 1. a housing; 11. mounting holes; 12. a limiting groove; 2. a password box assembly; 21. a mounting frame; 211. an outlet hole; 22. a rotation stopping frame; 221. a rotation stopping block; 222. a guiding cambered surface; 223. a protrusion; 2231. a bump; 23. a pawl member; 231. a pawl; 232. extending the column; 24. a spring plate main body; 241. an elastic sheet; 242. an elastic shifting piece; 3. a knob; 31. a slope groove; 32. a straight chute; 33. a lock body; 34. a locking plate; 35. rotating the block; 351. an eccentric shaft; 36. a through hole; 37. a through hole; 38. connecting blocks; 4. a print wheel assembly; 41. a central shaft; 411. a fixed block; 412. a retainer ring; 42. a coupling wheel; 421. a bushing; 422. positioning holes; 423. a groove; 424. a notch; 43. a print wheel; 431. a cam; 432. a positioning column; 4321. an arc-shaped end face; 44. a return spring; 5. a locking block; 51. a stopper; 52. a front end portion; 53. a rear end portion; 54. a limiting hole; 6. the spring is tightly propped; 7. moving the sleeve; 71. an arc-shaped surface; 72. cutting into a plain noodles; 73. avoiding the ring groove; 74. a transition bevel; 75. positioning a groove; 751. a first lead-out face; 76. a groove is embedded; 761. a second lead-out face; 8. a telescoping spring.

Detailed Description

The invention will be further described with reference to the accompanying drawings.

A public mode coded lock with an emergency function and an automatic zero resetting function is shown in figures 1-3 and comprises a shell 1, wherein a code box assembly 2 and a knob 3 are arranged on the shell 1, a mounting hole 11 is formed in the shell 1, and the knob 3 is rotatably mounted in the mounting hole 11.

As shown in fig. 2-3 and 8, the cipher case assembly 2 includes an installation frame 21, the installation frame 21 is connected with the housing 1 through a buckle, a character wheel assembly 4 and a spring plate assembly are arranged in the installation frame 21, a rotation stopping frame 22 and a pawl 23 are further rotatably installed on the installation frame 21, one side of the rotation stopping frame 22 is rotatably installed on the installation frame 21 through a rotating shaft, a rotation stopping block 221 is formed at the front end of the other side of the rotation stopping frame 22 in an extending manner, and a guide arc surface 222 is arranged on the side wall of the rotation stopping block 221.

As shown in fig. 3-6, the character wheel assembly 4 includes a central shaft 41, four coupling wheels 42 sleeved on the central shaft 41, and a character wheel 43, wherein a bushing 421 is coaxially formed by extending the center of the coupling wheels 42, and the character wheel 43 is rotatably disposed on the bushing 421. One side of the print wheel 43 is integrally formed with a cam 431, in the embodiment, the cam 431 is a logarithmic spiral wheel, a plurality of pawls 231 are arranged on the pawl member 23, the upper surface of the pawls 231 is a plane, and the pawls 231 are in poke fit with the logarithmic spiral wheel. Through the drive structure drive cooperation between knob 3 and the pawl 23, the drive structure includes integrated into one piece in the extension post 232 of pawl 23, set up in the domatic groove 31 of knob 3 lateral wall, and mounting bracket 21 corresponds and sets up the hole 211 that stretches out that supplies extension post 232 to stretch out, extends post 232 and the cooperation of domatic groove 31 embedding, and when knob 3 rotated, domatic groove 31 drove and extends post 232 up-and-down motion. When the knob 3 rotates 180 degrees, the slope-shaped groove 31 moves relative to the extension column 232, the extension column 232 moves from the trough to the trough peak in the slope-shaped groove 31 and then moves to the trough, and in the process, the extension column 232 can move up and down along the slope-shaped groove 31, so that the shifting process of the pawl 23 is completed. Therefore, when the coded lock is decrypted or locked, the code disordering process can be realized while the knob 3 is rotated to unlock or close the coded lock. The anti-peeping effect can be achieved, and the safety is high.

As shown in fig. 3-4, the coupling wheel 42 has a plurality of positioning holes 422, a groove 423 is formed on one side of the coupling wheel 42, a positioning post 432 is correspondingly disposed on the cam 431, the positioning post 432 is coupled with the positioning holes 422, and an arc end surface 4321 is disposed at the front end of the positioning post 432. The rotation stopping frame 22 is provided with a projection 223 embedded and matched with the groove 423, the middle part of the projection 223 is provided with a projection 2231, the projection 2231 and the projection 223 are integrally shaped like a Chinese character 'ren', the coupling wheel 42 is provided with a notch 424 communicated with the groove 423, and the notch 424 is used for the projection 2231 to extend into.

As shown in fig. 3, a fixing block 411 is fixedly disposed at the front end of the central shaft 41, a displacement gap is formed between the fixing block 411 and the first coupling wheel 42, a retaining ring 412 is fixedly disposed at the rear end of the central shaft 41, a return spring 44 is sleeved on the central shaft 41, one end of the return spring 44 abuts against the retaining ring 412, and the other end of the return spring 44 abuts against the mounting frame 21.

As shown in fig. 3, the elastic sheet assembly includes an elastic sheet main body 24, a plurality of elastic sheets 241 and an elastic shifting sheet 242, the elastic sheets 241 are disposed on the elastic sheet main body 24, the elastic sheets 241 are abutted against the anti-rotation frame 22, so that the anti-rotation frame 22 always tends to move toward the coupling wheel 42, the elastic shifting sheet 242 is abutted against the print wheel 43, and a plurality of convex marks are disposed on a side wall of the print wheel 43. Because the elastic shifting piece 242 abuts against the side wall of the print wheel 43, when the print wheel 43 is shifted, the convex marks and the elastic shifting piece 242 intermittently bounce, and when the print wheel 43 is shifted, the shifting sense can be more obvious, and the shifting hand feeling can be improved to a certain extent.

As shown in fig. 7 and 9, a lock core assembly is disposed in the knob 3, and a straight sliding groove 32 is formed in the knob, a lock block 5 is slidably disposed in the straight sliding groove 32, and the lock core assembly drives the lock block 5 to move along the straight sliding groove 32 through a transmission structure. The lock core subassembly is including lock body 33, locate a plurality of locking plates 34 of lock body 33 and connect in the turning block 35 of lock body 33, and the transmission structure is including locating eccentric shaft 351 on the turning block 35, corresponding dog 51 of locating locking piece 5, and when turning block 35 drove eccentric shaft 351 and rotated, eccentric shaft 351's lateral wall supported and ordered about locking piece 5 displacement in dog 51. The knob 3 is provided with a through hole 36 for the lock block 5 to extend out, when the lock block 5 extends out of the through hole 36 and the rotation stopping frame 22 is pressed down by the coupling wheel 42, the lock block 5 is in rotation stopping fit with the rotation stopping block 221, and in addition, the guide arc surface 222 can be in guide fit with the lock block 5. The whole locking piece 5 sets up to the zigzag, and locking piece 5 is including preceding tip 52 and back tip 53, and preceding tip 52 corresponds to through-hole 36, and through-hole 37 has still been seted up to knob 3 lateral wall, and back tip 53 corresponds to through-hole 37, and the spacing groove 12 has been seted up to casing 1 inner wall correspondence, and when knob 3 rotated, back tip 53 can be with spacing cooperation in spacing groove 12, and the circular arc angle alpha of spacing groove 12 sets up to 65. One side of the locking block 5 close to the rear end part 53 is provided with a limiting hole 54, a tight supporting spring 6 is arranged in the limiting hole 54, one end of the tight supporting spring 6 supports against the inner wall of the limiting hole 54, and the other end of the tight supporting spring 6 supports against the inner wall of the knob 3.

After the emergency key is inserted into the lock body 33 and the lock body is rotated, the eccentric shaft 351 on the rotating block 35 can be driven to relatively displace, and the side wall of the eccentric shaft 351 abuts against the stop block 51 in the moving process, so that the lock block 5 can be pushed to retract towards the knob 3; after the emergency key rotates the lock cylinder assembly reversely, the eccentric shaft 351 removes the acting force of the stop block 51, and the lock block 5 can move outwards from the through hole 36 and pass through the knob 3 again under the elastic force action of the resisting spring 6. One end of the abutting spring 6 extends into the limiting hole 54, so that the abutting spring 6 can be limited to a certain extent, and the abutting spring is prevented from being displaced and losing efficacy in the telescopic process.

When the lock block 5 moves relative to the straight chute 32 to enable the front end part 52 to retract into the knob 3, the rear end part 53 extends out of the through hole 37 relatively, when the knob 3 rotates to avoid the rotation stop block 221, the rear end part 53 moves in the limiting groove 12 until the side wall of the rotation stop block 221 abuts against the side wall of the limiting groove 12, the emergency key can be reversed, the lock block 5 reversely moves again, the rear end part 53 retracts into the knob 3, the front end part 52 extends out, therefore, the rotation angle of the knob 3 can be timely fed back through the limit matching of the rear end part 53 and the limiting groove 12, and a user is prompted to rotate the emergency key.

As shown in fig. 5-7, a moving sleeve 7 is coaxially arranged in the knob 3, a connecting block 38 for connecting a lock tongue is arranged at the bottom end of the knob 3, an extension spring 8 is arranged between the moving sleeve 7 and the knob 3, and the extension spring 8 drives the lower part of the moving sleeve 7 to extend out of the knob 3 all the time; the outer wall of the movable sleeve 7 is provided with an arc-shaped surface 71, a flat tangent surface 72 and an avoidance ring groove 73, and a transition inclined surface 74 is formed between the flat tangent surface 72 and the arc-shaped surface 71 on one side; when the knob 3 rotates, the fixed block 411 moves from the arc-shaped surface 71 to the tangent plane 72, the moving sleeve 7 is pressed into the knob 3 under the guiding action of the transition inclined surface 74, the fixed block 411 is located in the avoiding ring groove 73, and when the knob 3 is rotated to unlock, the fixed block 411 moves along the avoiding ring groove 73. The movable sleeve 7 is further provided with a positioning groove 75 and an embedded groove 76 which are adjacent to each other, the positioning groove 75 is communicated with the avoiding ring groove 73, the positioning groove 75 is provided with a first leading-out surface 751, and the embedded groove 76 is provided with a second leading-out surface 761. When the fixing block 411 is positioned in the insertion groove 76, the arc-shaped end surface 4321 is coupled with the positioning hole 422. The tangent plane 72 and the transition inclined plane 74 are correspondingly positioned at one end of the avoiding ring groove 73, and the positioning groove 75 is positioned at the other end of the avoiding ring groove 73.

When the fixing block 411 abuts against the arc-shaped surface 71, the coupling structure is in a complete coupling state; after the knob 3 rotates a certain angle, the fixing block 411 is transited to the avoiding ring groove 73 through the tangent plane 72 and the transition inclined plane 74, meanwhile, the fixing block 411 presses the moving sleeve 7 upwards into the knob 3, the telescopic spring 8 is compressed, and when the knob 3 rotates to unlock, the fixing block 411 moves in the avoiding ring groove 73. When the front end of the fixed block 411 is correspondingly located below the positioning slot 75, the movable sleeve 7 is extended downwards under the elastic force of the extension spring 8, the fixed block 411 is correspondingly embedded in the positioning slot 75, then the knob 3 is rotated reversely, the fixed block 411 is separated from the positioning slot 75 and embedded in the embedded slot 76 under the guiding action of the first leading-out surface 751, the knob is further rotated in the same direction, and the fixed block 411 is separated from the embedded slot 76 and returns to reset under the guiding action of the second leading-out surface 761.

The basic working principle of the invention is as follows: in the initial state (locking, as shown in fig. 11), the projection 2231 on the rotation stopping frame 22 is pressed down by the coupling wheel 42, so that the rotation stopping block 221 is at the lower point and is in rotation stopping fit with the locking block 5, and at this time, the knob 3 cannot rotate, and the coupling wheel 42 and the cam 431 are in the complete coupling state.

When using the password unblock, dial commentaries on classics character wheel 43, drive coupling wheel 42 through cam 431 and rotate when character wheel 43 rotates, when character wheel 43 all was located correct password position, coupling wheel 42's recess 423 just is right to the arch 223 of only revolving rack 22, and the shell fragment subassembly orders about only revolving rack 22 and lifts up for arch 223 and recess 423 gomphosis mutually, and only revolving rack 22 drives and stops to lift on the piece 221 and be located the upper position point simultaneously, so, locking piece 5 and only revolving block 221 form dodges, can rotate knob 3 unblock.

When knob 3 is rotatory, can drive pawl 23 through drive structure and rise and act on cam 431, stir cam 431 and rotate and reset, cam 431 drives character wheel 43 and rotates and resets to "0" position, so, only need can realize returning to zero automatically in the process of unblanking and locking through rotatory knob 3, in time reset can effectively prevent peeping, has the higher effect of security.

After unlocking, the central shaft 41 is pushed by the retaining ring 412 under the elastic force of the return spring 44 to displace the upper coupling wheel 42 thereof in the axial direction away from the print wheel 43, so that the positioning post 432 and the positioning hole 422 are in a separated state (as shown in fig. 10), and the password can be reset when locking. When the knob 3 is reversely rotated and locked, the fixed block 411 abuts against the arc-shaped surface 71 to enable the central shaft 41 to reversely displace, the fixed block 411 abuts against the coupling wheel 42 to enable the fixed block to be re-coupled with the cam 431, then the pawl piece 23 is driven again to shift the cam 431 to reset, so that the character wheel 43, the cam 431 and the coupling wheel 42 can synchronously rotate, the character wheel 43 returns to zero, the groove 423 of the coupling wheel 42 is far away from the protrusion 223 of the rotation stopping frame 22 after the coupling wheel rotates, the rotation stopping frame 22 is pressed down to enable the rotation stopping block 221 to be located at the lower position again and locked with the locking block 5, and the setting of a new password can be realized in the locking process.

When forgetting the condition of password, when adopting the emergency key unblock, insert emergency key in the cylinder subassembly, rotate 180, can drive the motion of locking piece 5 through transmission structure for locking piece 5 retracts in to knob 3 along straight spout 32, owing to locking piece 5 and the piece 221 of splining between having formed dodging this moment, consequently, can rotate 20 ~ 30 backs with knob 3, make locking piece 5 correspond and cross the piece 221 of splining, reverse rotation emergency key 180 again afterwards, make locking piece 5 stretch out knob 3 again. At the moment, the emergency key can be pulled out and returned to the administrator in time, and can also be left in the lock cylinder component. The knob 3 is rotated along the original rotation direction, so that unlocking can be realized, and when the lock needs to be locked again after the lock is used up, the lock only needs to be reset by reversely rotating the knob 3. The knob 3 drives the protruding locking piece 5 to move in the rotating process, when the locking piece 5 abuts against the rotation stopping piece 221, under the guiding effect of the guiding arc surface 222 of the rotation stopping piece 221, the rotation stopping piece 221 is relatively pressed downwards, avoidance can be formed on the horizontal position between the rotation stopping piece and the rotation stopping piece, after the locking piece 5 crosses the rotation stopping piece 221, the rotation stopping piece 221 resets again, the rotation stopping piece 221 abuts against the locking piece 5 again, locking can be achieved, and the knob 3 cannot be rotated and unlocked at the moment. So, when adopting emergent key unblock, both can pull out the key after unblanking, also can keep somewhere, have more convenient, the higher effect of security of use.

In addition, after the emergency key is used for unlocking, the process of clearing the password can be realized, and the password which is originally set can be restored to factory setting due to the fact that the user forgets the password. When the fixing block 411 is correspondingly located in the insertion slot 76 during the rotation of the knob 3, the fixing block 411 pushes the central shaft 41 to axially displace for a certain distance, so that the arc-shaped end surface 4321 of the positioning column 432 correspondingly extends into the positioning hole 422 (as shown in fig. 12), but the non-positioning column 432 is completely inserted into the positioning hole 422, and the password can be cleared and reset at the position; the cleaning process is as follows: the print wheels 43 are sequentially shifted to enable each print wheel 43 to rotate at least 360 degrees, and in the rotating process of the print wheels 43, the arc-shaped end surfaces 4321 are coupled with the positioning holes 422, so that the coupling wheels 42 can be driven to rotate until the grooves 423 of the coupling wheels 42 correspond to the convex blocks 2231. In the rotation process of the character wheel 43, when the coupling wheel 42 is not shifted to the position corresponding to the groove 423 and the convex block 2231, the end face of the coupling wheel 42 cannot be displaced axially under the resisting and limiting action of the convex block 2231; until the groove 423 is rotated to correspond to the projection 2231, the coupling wheel 42 is moved away from the cam 431 in the axial direction of the central shaft 41 by the guiding action of the arc-shaped end surface 4321 along with the rotation of the print wheel 43, and finally the coupling action between the coupling wheel 42 and the print wheel 43 is lost, and at this time, the groove 423 of the coupling wheel 42 corresponds to the projection 223. The other character wheels 43 are sequentially turned, when the grooves 423 of the coupling wheels 42 corresponding to all the character wheels 43 correspond to the protrusions 223, the rotation stopping frame 22 is lifted up under the elastic force of the elastic sheet assembly, the protrusions 223 are correspondingly embedded in the grooves 423, and meanwhile, the protrusions 2231 correspondingly extend into the notches 424, so that the password clearing process can be completed. Therefore, the password can be restored to the factory setting function, the effect of economy and convenience is achieved, the password lock does not need to be replaced when the password is forgotten, and the resetting process is rapid and simple.

The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present invention are included in the scope of the present invention.

Claims (10)

1. A public mode coded lock with an emergency function and an automatic zero resetting function comprises a shell (1), wherein a coded box assembly (2) and a knob (3) are arranged on the shell (1), the coded box assembly (2) comprises a mounting frame (21), and the mounting frame (21) is provided with a character wheel assembly (4) and an elastic sheet assembly; the method is characterized in that:

the mounting rack (21) is rotatably provided with a rotation stopping rack (22) and a pawl piece (23), and the rotation stopping rack (22) is abutted against the print wheel assembly (4) through the elastic piece assembly; the character wheel assembly (4) comprises a central shaft (41), a plurality of coupling wheels (42) and character wheels (43) which are sleeved on the central shaft (41), a cam (431) is integrally formed on the character wheels (43), the pawl piece (23) is in poking fit with the cam (431), and the knob (3) is in driving fit with the pawl piece (23) through a driving structure;

the driving structure comprises an extension column (232) integrally formed on the pawl (23) and a slope-shaped groove (31) formed in the side wall of the knob (3), the mounting frame (21) is correspondingly provided with an extension hole (211) for the extension column (232) to extend out, the extension column (232) is embedded and matched with the slope-shaped groove (31), and when the knob (3) rotates, the slope-shaped groove (31) drives the extension column (232) to move up and down;

the coupling wheel (42) is provided with a positioning hole (422) and a groove (423), the cam (431) is correspondingly provided with a positioning column (432), and the positioning column (432) is coupled with the positioning hole (422); the anti-rotation frame (22) is provided with a protrusion (223) which is matched with the groove (423) in an embedded mode, the anti-rotation frame (22) is further integrally formed with an anti-rotation block (221), the knob (3) is provided with a locking block (5), and the anti-rotation block (221) is matched with the locking block (5) in an anti-rotation mode;

the one end of center pin (41) is equipped with the elastic component that resets, the other end of center pin (41) is equipped with fixed block (411), knob (3) have been seted up and have been dodged annular (73), and when the unblock, the elastic component that resets orders about fixed block (411) stretch into dodge annular (73).

2. The combination lock with emergency function and auto-zero public mode as claimed in claim 1, wherein: the cam (431) is a logarithmic spiral wheel; drive structure include integrated into one piece in the extension post (232) of pawl spare (23), set up in the domatic groove (31) of knob (3) lateral wall, mounting bracket (21) correspond and have seted up the confession extend hole (211) that stretches out of post (232), extend post (232) with the cooperation of domatic groove (31) embedding, work as when knob (3) rotate, domatic groove (31) drive extend post (232) up-and-down motion.

3. The combination lock with emergency function and auto-zero public mode as claimed in claim 1, wherein: an arc-shaped end face (4321) is arranged at the front end of the positioning column (432), and a displacement gap is formed between the fixed block (411) and the coupling wheel (42); coupling wheel (42) seted up with breach (424) that recess (423) are linked together, protruding (223) be equipped with bump (2231) that breach (424) matched with, embedded groove (76) have been seted up in knob (3), when fixed block (411) are located embedded groove (76), arc terminal surface (4321) with locating hole (422) coupling.

4. The combination lock with emergency function and auto-zero public mode as claimed in claim 1, wherein: the reset elastic piece is provided with a reset spring (44), a check ring (412) is sleeved on the central shaft (41), one end of the reset elastic piece abuts against the check ring (412), and the other end of the reset elastic piece abuts against the mounting frame (21).

5. The coded lock with the emergency function and the auto-zero public mode as claimed in claim 1, wherein: the elastic sheet assembly comprises an elastic sheet main body (24), a plurality of elastic sheets (241) and elastic shifting sheets (242), the elastic sheets (241) are arranged on the elastic sheet main body (24), the elastic sheets (241) are abutted to the rotation stopping frame (22), the rotation stopping frame (22) is enabled to have a trend of moving towards the character wheel assembly (4), and the elastic shifting sheets (242) are abutted to the character wheels (43).

6. The combination lock with emergency function and auto-zero public mode as claimed in claim 1, wherein: a lock core assembly and a straight chute (32) are arranged in the knob (3), and the lock core assembly drives the lock block (5) to move along the straight chute (32); the confession has been seted up in knob (3) through hole (36) that lock piece (5) stretched out, the lock core subassembly passes through transmission structure and orders about lock piece (5) remove, work as lock piece (5) stretch out through hole (36), and only revolving rack (22) are pushed down by coupling wheel (42), lock piece (5) with only revolving block (221) backstop cooperation, only revolving block (221) are equipped with direction cambered surface (222), direction cambered surface (222) with lock piece (5) direction cooperation.

7. The public mode combination lock with emergency function auto-zero as claimed in claim 6, wherein: the lock core assembly comprises a lock body (33), a plurality of lock plates (34) arranged on the lock body (33) and a rotating block (35) connected to the lock body (33), the transmission structure comprises an eccentric shaft (351) arranged on the rotating block (35) and a stop block (51) correspondingly arranged on the lock block (5), and when the rotating block (35) drives the eccentric shaft (351) to rotate, the side wall of the eccentric shaft (351) abuts against the stop block (51) to drive the lock block (5) to move; a tight-resisting spring (6) is arranged in the knob (3), and the tight-resisting spring (6) drives the locking block (5) to always have a movement trend of extending out of the through hole (36).

8. The public mode combination lock with emergency function auto-zero as claimed in claim 7, wherein: the locking block (5) is provided with a limiting hole (54), one end of the abutting spring (6) abuts against the limiting hole (54), and the other end of the abutting spring (6) abuts against the inner wall of the knob (3).

9. The public mode combination lock with emergency function auto-zero as claimed in claim 6, wherein: the whole zigzag that sets up of locking piece (5), locking piece (5) are including preceding tip (52) and back tip (53), preceding tip (52) are corresponding to through hole (36), through-hole (37) have still been seted up to knob (3) lateral wall, back tip (53) are corresponding to through-hole (37), spacing groove (12) have been seted up to casing (1) inner wall correspondence, work as when knob (3) rotate, back tip (53) with spacing cooperation in spacing groove (12).

10. A panic-enabled automatic zero-reset public mode combination lock according to claim 3, wherein: a movable sleeve (7) is coaxially arranged in the knob (3), an expansion spring (8) is arranged between the movable sleeve (7) and the knob (3), and the expansion spring (8) drives the movable sleeve (7) to extend out of the knob (3) all the time; the outer wall of the moving sleeve (7) is provided with an arc-shaped surface (71) and a flat tangent surface (72), and a transition inclined surface (74) is formed between the flat tangent surface (72) and the arc-shaped surface (71) on one side; when the knob (3) rotates, the fixed block (411) moves from the arc-shaped surface (71) to the tangent plane (72), the movable sleeve (7) is pressed into the knob (3) under the guiding action of the transition inclined surface (74), and the fixed block (411) is located in the avoidance ring groove (73); move set (7) and still seted up constant head tank (75) adjacent to embedded groove (76), constant head tank (75) communicate in dodge annular (73), constant head tank (75) are equipped with first derivation face (751), embedded groove (76) are equipped with second derivation face (761).

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