CN215803825U - Cipher clearing mechanism of character wheel cipher lock - Google Patents

Abstract

The utility model discloses a password clearing mechanism of a character wheel password lock, which comprises a mounting seat, wherein a rotation stopping frame and a character wheel assembly are arranged in the mounting seat, the rotation stopping frame is rotatably connected to the mounting seat, and a bulge is arranged on the rotation stopping frame; the character wheel assembly comprises a central shaft, a plurality of character wheels and a coupling wheel, a cam is arranged on each character wheel, a coupling structure is arranged between each cam and the coupling wheel, each coupling structure comprises a positioning column and a positioning hole, and the front end of each positioning column is provided with an arc-shaped end face; the coupling wheel is provided with a groove, the protrusion is matched with the groove in a positioning way, the mounting seat is internally provided with a spring plate assembly, and the spring plate assembly drives the protrusion to abut against the coupling wheel tightly; the rotation stopping frame is provided with a convex block, and the coupling wheel is correspondingly provided with a notch communicated with the groove. The utility model has the following advantages and effects: the new mechanical structure of this scheme utilization can realize the function of resetting after the password is clear away, has economy, convenient effect, need not to change the trick lock when forgetting the password, and resets process rapider, simple and convenient.

Description

Cipher clearing mechanism of character wheel cipher lock

Technical Field

The utility model relates to the technical field of coded locks, in particular to a code clearing mechanism of a character wheel coded lock.

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 coded lock in the prior art generally comprises key locking and code locking, and can be unlocked independently, but the key locking device and the code locking device are relatively independent, once a code is forgotten, a code locking part cannot be used, and the coded lock becomes a common lock which can only be unlocked by using a key, namely, the code locking function is lost, so that the coded lock is not economical and is inconvenient to use. Therefore, it is desirable to provide a combination lock that can recover the combination and reset the combination under certain conditions.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a code clearing mechanism of a character wheel coded lock, which can realize the reset function after clearing codes and has the effects of economy and convenience.

The technical purpose of the utility model is realized by the following technical scheme: a password clearing mechanism of a character wheel password lock comprises a mounting seat, wherein a rotation stopping frame and a character wheel assembly are arranged in the mounting seat, one side of the rotation stopping frame is rotatably connected to the mounting seat through a rotating shaft, and a protrusion is arranged on the rotation stopping frame;

the character wheel assembly comprises a central shaft, a plurality of character wheels and coupling wheels, the character wheels and the coupling wheels are sleeved on the central shaft, a cam is integrally formed on each character wheel, a coupling structure is arranged between each cam and each coupling wheel, each coupling structure comprises a positioning column and a positioning hole, the front end of each positioning column is an arc-shaped end face, and each arc-shaped end face is in guiding fit with the positioning hole;

the coupling wheel is provided with a groove corresponding to the protrusion, the protrusion is matched with the groove in a positioning manner, the mounting seat is internally provided with a spring plate assembly, and the spring plate assembly drives the protrusion to abut against the coupling wheel;

the rotation stopping frame is provided with a convex block, the coupling wheel is correspondingly provided with a notch communicated with the groove, and the notch is used for the convex block to extend into.

Through adopting above-mentioned technical scheme, when the user need reset clear away the password, with center pin along axial displacement certain distance, drive coupling wheel axial displacement for the arc terminal surface of reference column corresponds and stretches into in the locating hole, and not the reference column inserts the locating hole completely, because when the password is wrong password, the outer wall of coupling wheel supports in the arch makes and ends the revolving rack and push down, and the recess is kept away from to the arch. In this state, the character wheels are sequentially shifted, so that each character wheel rotates at least 360 degrees, and in the rotation process of the character wheels, the arc-shaped end surfaces 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 function of resetting after clearing the password can be realized, 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 utility model is further provided with: be provided with reset spring between mount pad and the center pin, the center pin is equipped with the retaining ring, and reset spring's one end supports in the retaining ring, and reset spring's the other end supports in the mount pad, and reset spring orders about the coupling wheel and has the motion trend of keeping away from the character wheel all the time.

Through adopting above-mentioned technical scheme, when resetting the password, pass along the axial with the center pin and make coupling wheel and cam coupled, stir the character wheel and can set up new password, this in-process, reset spring is compressed, and after new password setting was accomplished, make the center pin automatic along the axial reset under reset spring's elastic force effect, drive the coupling wheel simultaneously and keep away from the cam.

The utility model is further provided with: still be equipped with the automatic structure of zeroing in the mount pad, the automatic structure of zeroing includes the pawl spare, is provided with a plurality of pawls on the pawl spare, and the cam sets up to logarithmic spiral cam, and when the relative upset of pawl spare, pawl and logarithmic spiral cam are stirred the cooperation.

Through adopting above-mentioned technical scheme, dial a plurality of character wheels to correct password and unblock back, the accessible returns to zero the structure to return to zero rapidly together, stirs the pawl spare for the pawl spare drives the pawl and rises, when the pawl acts on logarithmic spiral cam, can reset logarithmic spiral cam shifting, can drive the character wheel when logarithmic spiral cam rotates and reset to "O" position, can be to the quick and same messy code that returns to zero that realizes of a plurality of character wheels.

The utility model is further provided with: an extension column is arranged on the end face of the pawl piece, and a through hole for the extension column to extend out is correspondingly formed in the mounting seat; the rotary knob is characterized by further comprising a rotary knob, a slope-shaped groove is formed in the side wall of the rotary knob, the extension column is matched with the slope-shaped groove in an embedded mode, and when the rotary knob rotates, the slope-shaped groove drives the extension column to move up and down.

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 valley 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, after the trick lock deciphers, can realize the messy sign indicating number process when rotatory knob unblanks. The anti-peeping effect can be achieved, and the safety is high.

The utility model is further provided with: the elastic sheet assembly comprises an elastic sheet main body and a plurality of elastic sheets arranged on the elastic sheet main body, and the elastic sheets are abutted against the rotation stopping frame, so that the rotation stopping frame always has the trend of moving towards the character wheel assembly.

The utility model is further provided with: and a supporting spring is also arranged in the mounting seat, one end of the supporting spring is propped against the mounting seat, and the other end of the supporting spring is propped against the elastic sheet.

Through adopting above-mentioned technical scheme, supporting spring provides elasticity to the elastic sheet, under the condition of long-time use, can prevent that the elastic sheet from appearing tiredly and becoming invalid, has the prevention effect.

The utility model is further provided with: the elastic sheet main body is also provided with an elastic shifting sheet which is matched with the side wall of the print wheel in an abutting mode.

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 utility model is further provided with: the front end of the rotation stopping frame is provided with a rotation stopping block in an extending mode, a lock cylinder assembly is arranged in the knob, and the lock cylinder assembly comprises a lock block which is matched with the rotation stopping block in a stopping mode.

By adopting the technical scheme, when the coded lock is in a locking state, the rotation stopping block is positioned at the lower part and is abutted against the locking block, and when the codes of the character wheels are correctly input, the rotation stopping block is lifted under the elastic force action of the elastic sheet assembly and drives the rotation stopping block to be lifted, so that the rotation stopping block and the locking block are avoided, and the knob can be rotated to unlock.

The utility model 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 end part of the central shaft is provided with a fixed block, the outer wall of the movable sleeve is provided with an arc-shaped surface, a plane surface and an avoidance ring groove, and a first transition inclined surface is formed between the plane surface and the arc-shaped surface on one side; when the knob rotates, the fixed block moves from the arc-shaped surface to the tangent plane, the movable sleeve is pressed into the knob upwards under the guiding action of the first transition inclined surface, and the fixed block is located in the avoiding annular groove at the moment.

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, and the coded lock is in a locking 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 first transition inclined plane, meanwhile, the movable sleeve is upwards pressed into the knob through the fixed block, the telescopic spring is compressed, and when the knob rotates to unlock, the fixed block moves in the avoidance ring groove.

The utility model is further provided with: the movable sleeve is further provided with a positioning groove and an 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.

Through adopting above-mentioned technical scheme, when the front end of fixed block corresponds and is located the constant head tank below, make the movable sleeve stretch out downwards under expanding spring's spring action, the fixed block correspondence inlays in the constant head tank, the antiport knob afterwards, make the fixed block break away from the constant head tank and inlay in the embedded groove under the guide effect of first derivation face, at this moment, the arc terminal surface and the locating hole looks coupling of reference column front end, stir the character wheel and can realize the process of cleaing away the password, clear away the password and accomplish the back, further rotate the knob, make the fixed block break away from the embedded groove under the guide effect of second derivation face.

In conclusion, the utility model has the following beneficial effects:

1. the character wheel is shifted by at least 360 degrees by adopting the coupling effect of the positioning hole of the coupling wheel and the arc-shaped end face at the front end of the positioning column of the cam, so that the groove of each coupling wheel corresponds to the protrusion of the rotation stopping frame to realize positioning, the reset function after clearing the password can be realized, the effect of economy and convenience is achieved, the password lock does not need to be replaced when the password is forgotten, and the reset process is rapid and simple;

2. the mode that the automatic zeroing structure is arranged in the mounting seat is adopted, when the pawl acts on the logarithmic spiral cam, the logarithmic spiral cam can be rotated and reset, when the logarithmic spiral cam rotates, the character wheels can be driven to reset to O, the zeroing and the code disordering of the plurality of character wheels can be quickly and simultaneously realized, the peeping prevention effect can be achieved, and the safety is high;

3. the mode that the elastic poking sheet is abutted against the side wall of the character wheel is adopted, so that the obvious poking feeling can be generated in the poking process of the character wheel, and the poking hand feeling can be improved to a certain extent.

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 the internal structure of the embodiment.

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 diagram of the structural relationship of the knob and the print wheel assembly of the embodiment.

FIG. 6 is a schematic diagram of the knob structure according to the embodiment.

FIG. 7 is a schematic diagram of another view angle of the knob according to the embodiment.

Fig. 8 is a cross-sectional view of a knob of an embodiment.

Fig. 9 is a cross-sectional view of the structure of the print wheel assembly and the anti-rotation frame of the embodiment in an uncoupled state.

Fig. 10 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. 11 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. a mounting seat; 111. a through hole; 112. a support spring; 12. a return spring; 2. a rotation stopping frame; 21. a rotating shaft; 22. a protrusion; 23. a bump; 24. a rotation stopping block; 3. a central shaft; 31. A retainer ring; 32. a fixed block; 4. a coupling wheel; 41. a bushing; 42. positioning holes; 43. a groove; 44. a notch; 5. a print wheel; 6. a cam; 61. a positioning column; 62. an arc-shaped end face; 7. a pawl member; 71. a connecting shaft; 72. a pawl; 73. extending the column; 8. a knob; 81. a slope groove; 82. a plug assembly; 83. a locking block; 84. moving the sleeve; 841. an arc-shaped surface; 842. cutting into a plain noodles; 843. avoiding the ring groove; 844. a first transition ramp; 845. a second transition ramp; 846. positioning a groove; 847. a groove is embedded; 848. a first lead-out face; 849. a second lead-out face; 85. a tension spring; 9. a spring plate main body; 91. an elastic sheet; 92. an elastic shifting piece.

Detailed Description

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

A password clearing mechanism of a character wheel password lock is shown in figures 1-4 and comprises a shell 1, a mounting seat 11 is mounted in the shell 1, a knob 8 is rotatably mounted, a rotation stopping frame 2 and a character wheel assembly are arranged in the mounting seat 11, one side of the rotation stopping frame 2 is rotatably connected onto the mounting seat 11 through a rotating shaft 21, four protrusions 22 are sequentially arranged on the rotation stopping frame 2, a convex block 23 is arranged in the middle of each protrusion 22, and the convex blocks 23 and the protrusions 22 are integrally formed into a herringbone shape.

As shown in fig. 3-5, the character wheel assembly includes a central shaft 3, four coupling wheels 4 and four character wheels 5, the outer walls of the character wheels 5 are marked with a plurality of numbers, a convex mark is arranged between each number, the coupling wheels 4 are sequentially sleeved on the central shaft 3, the middle part of each coupling wheel 4 extends to form a bushing 41, each character wheel 5 is sleeved on the bushing 41 in a one-to-one correspondence manner, a cam 6 is integrally formed on one side of each character wheel 5 close to the coupling wheel 4, and the cam 6 is a logarithmic spiral cam 6. A coupling structure is arranged between the cam 6 and the coupling wheel 4, the coupling structure comprises a plurality of positioning columns 61 and ten positioning holes 42 which are matched in an inserted mode, the positioning columns 61 are arranged on the end face of the cam 6, the positioning holes 42 are correspondingly formed in the coupling wheel 4 along the circumferential direction of the coupling wheel 4, the front end of each positioning column 61 is an arc-shaped end face 62, and the arc-shaped end faces 62 are matched with the positioning holes 42 in a guiding mode. The coupling wheel 4 is provided with a groove 43 corresponding to the protrusion 22, the protrusion 22 is in positioning fit with the groove 43, the middle part of the groove 43 is provided with a notch 44, and the notch 44 is used for the protrusion 23 to extend into.

As shown in fig. 3, a horizontal return spring 12 is disposed between the mounting seat 11 and the central shaft 3, the central shaft 3 is provided with a retaining ring 31, the retaining ring 31 is abutted against and matched with the coupling wheel 4 at the end, one end of the return spring 12 abuts against the retaining ring 31, the other end of the return spring 12 abuts against the mounting seat 11, and the return spring 12 drives the coupling wheel 4 to have a movement tendency away from the character wheel 5 and a movement tendency of driving the central shaft 3 to approach the knob 8 all the time.

As shown in fig. 3 and 5, an automatic zero-resetting structure is further arranged in the mounting seat 11, the automatic zero-resetting structure comprises a pawl 7, one side of the pawl 7 is rotatably mounted on the mounting seat 11 through a connecting shaft 71, and four pawls 72 corresponding to the logarithmic spiral cam 6 are arranged on the pawl 7. An extension column 73 is arranged on the end surface of the pawl 7, and a through hole 111 for extending the extension column 73 is correspondingly formed in the mounting seat 11; the side wall of the knob 8 is provided with a slope groove 81, the extension column 73 is matched with the slope groove 81 in an embedding manner, and when the knob 8 rotates, the slope groove 81 drives the extension column 73 to move up and down.

As shown in fig. 3, be equipped with the shell fragment subassembly in the mount pad 11, the shell fragment subassembly is including shell fragment main part 9, locate a plurality of elastic pieces 91 and the elasticity plectrum 92 of shell fragment main part 9, elasticity plectrum 92 and the cooperation of offsetting of character wheel 5 lateral wall, because elasticity plectrum 92 offsets in the 5 lateral walls of character wheel, stir the in-process when character wheel 5, elasticity plectrum 92 intermittent type nature is flicked, stir the in-process when character wheel 5 and can produce more obvious stirring and feel, can improve the feeling of stirring to a certain extent. The elastic piece 91 is abutted against the rotation stopping frame 2, so that the rotation stopping frame 2 always has a tendency of moving towards the character wheel assembly, and the protrusion 22 is driven to abut against the coupling wheel 4. A support spring 112 is further disposed in the mounting seat 11, one end of the support spring 112 abuts against the mounting seat 11, and the other end of the support spring 112 abuts against the elastic sheet 91. The support spring 112 provides elasticity to the elastic piece 91, and can prevent the elastic piece 91 from fatigue and failure in long-term use, thereby having a preventive effect.

As shown in fig. 5-7, the front end of the anti-rotation frame 2 is extended with an anti-rotation block 24, the knob 8 is provided with a lock cylinder assembly 82, the lock cylinder assembly 82 includes a lock block 83, and the lock block 83 is in backstop fit with the anti-rotation block 24. When the coded lock is in a locking state, the rotation stopping block 24 is positioned at the lower part and abuts against the locking block 83 to be blocked, and when the codes of the character wheels 5 are correctly input, the rotation stopping frame 2 is automatically lifted under the elastic action of the elastic sheet assembly and drives the rotation stopping block 24 to be lifted, so that the rotation stopping block 24 and the locking block 83 are prevented from moving, and the knob 8 can be rotated to unlock.

As shown in fig. 5-8 and 11, a moving sleeve 84 is coaxially disposed in the knob 8, a telescopic spring 85 is disposed between the moving sleeve 84 and the knob 8, and the telescopic spring 85 drives the moving sleeve 84 to extend out of the knob 8 all the time; a fixed block 32 is arranged at the end part of the central shaft 3, and a movement gap is formed between the fixed block 32 and the end surface of the bush 41 of the first coupling wheel 4; the outer wall of the movable sleeve 84 is provided with an arc-shaped surface 841, a plane tangent surface 842 and an avoidance ring groove 843, and a first transition inclined surface 844 is formed between the plane tangent surface 842 and the arc-shaped surface 841 on one side; when the knob 8 rotates, the fixed block 32 moves from the arc-shaped surface 841 to the tangent plane 842, and the moving sleeve 84 is pressed upwards into the knob 8 under the guiding action of the first transition inclined surface 844, and at this time, the fixed block 32 is located in the avoiding annular groove 843; a second transition inclined surface 845 is arranged between the avoiding annular groove 843 and the tangent plane 842. The side wall of the movable sleeve 84 is further provided with a positioning groove 846 and an embedded groove 847, the positioning groove 846 is communicated with the avoidance ring groove 843, the positioning groove 846 is provided with a first lead-out surface 848, and the embedded groove 847 is provided with a second lead-out surface 849.

When the fixing block 32 abuts against the arc-shaped surface 841, the coupling structure is in a complete coupling state (as shown in fig. 10), and the coded lock is in a locking state; after the knob 8 rotates by a certain angle, the fixed block 32 is correspondingly abutted against the plane section 842 under the action of the elastic force of the return spring 12, the fixed block 32 is transited to the avoidance ring groove 843 through the plane section and the first transition inclined plane 844, meanwhile, the fixed block 32 presses the moving sleeve 84 upwards into the knob 8, and the expansion spring 85 is compressed; when the knob 8 is further rotated, the fixing block 32 moves in the avoiding ring groove 843, and the coupling structure is in a completely separated state (as shown in fig. 9); when the front end of the fixing block 32 is correspondingly located below the positioning slot 846, the movable sleeve 84 is extended downwards under the elastic force of the extension spring 85, and the fixing block 32 is correspondingly embedded in the positioning slot 846; subsequently, the knob 8 is rotated in the reverse direction, the fixing block 32 is separated from the positioning groove 846 and embedded in the embedded groove 847 under the guiding action of the first leading-out surface 848, at this time, the arc-shaped end surface 62 at the front end of the positioning column 61 is coupled with the positioning hole 42, the process of clearing the password can be realized by shifting the character wheel 5, after the password is cleared, the knob 8 is further rotated, the fixing block 32 is separated from the embedded groove 847 under the guiding action of the second leading-out surface 849, and the resetting process can be realized.

The basic working principle of the utility model is as follows: when the user needs to reset and clear the password, the fixing block 32 of the central shaft 3 is abutted against the flat section 842, so that the central shaft 3 moves a small distance along the axial direction, the arc-shaped end surface 62 of the positioning column 61 correspondingly extends into the positioning hole 42, but the positioning column 61 is not completely inserted into the positioning hole 42, because when the password is an error password, the outer wall of the coupling wheel 4 abuts against the protrusion 22, so that the rotation stopping frame 2 is pressed down, and the protrusion 22 is far away from the groove 43. In this state, the character wheels 5 are sequentially shifted, so that each character wheel 5 rotates at least 360 degrees, and in the rotating process of the character wheels 5, the arc-shaped end surfaces 62 are coupled with the positioning holes 42, so that the coupling wheels 4 can be driven to rotate until the grooves 43 of the coupling wheels 4 correspond to the convex blocks 23. In the rotation process of the character wheel 5, when the coupling wheel 4 is not shifted to the position corresponding to the groove 43 and the bump 23, the end face of the coupling wheel 4 cannot axially displace under the resisting and limiting action of the bump 23; until the groove 43 rotates to correspond to the bump 23, the coupling wheel 4 moves away from the cam 6 along the axial direction of the central shaft 3 under the guiding action of the arc-shaped end surface 62 along with the rotation of the print wheel 5, and finally the coupling action between the coupling wheel 4 and the print wheel 5 disappears, at this time, the groove 43 of the coupling wheel 4 corresponds to the protrusion 22. And the rest character wheels 5 are sequentially turned, when the grooves 43 of the coupling wheels 4 corresponding to all the character wheels 5 correspond to the protrusions 22, the rotation stopping frame 2 is lifted up under the action of the elastic force of the elastic sheet assembly, the protrusions 22 are correspondingly embedded in the grooves 43, and meanwhile, the protrusions 23 correspondingly extend into the notches 44, so that the password clearing process can be completed, and the factory setting state is recovered. Therefore, the function of resetting after clearing the password can be realized, 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.

When resetting the password, the central shaft 3 is pushed along the axial direction to enable the coupling wheel 4 to be completely coupled with the cam 6, the character wheel 5 is shifted to set a new password, in the process, the return spring 12 is compressed, and after the new password is set, the password can be disorderly reset to zero by rotating the knob 8 through the automatic zero resetting structure.

After the password resets or dials a plurality of character wheels 5 to the correct password and unblocks, accessible auto-zero structure together returns to zero rapidly, and knob 8 rotates for sloping groove 81 moves relative to extension post 73, and extension post 73 moves to the trough peak again from the trough valley in sloping groove 81, and in this process, extension post 73 can realize the process that reciprocates along sloping groove 81, stirs pawl 7, makes pawl 7 drive pawl 72 and rises, accomplishes the process of stirring of pawl 7 once. When the pawl 72 acts on the logarithmic spiral cam 6, the logarithmic spiral cam 6 can be rotated and reset, and when the logarithmic spiral cam 6 rotates, the character wheel 5 can be driven to reset to the O position, so that after the password is reset or the password lock is decrypted, the code disordering process can be realized while the knob 8 is rotated, the anti-peeping effect can be achieved, and the safety is high.

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. The utility model provides a mechanism is clear away to password of character wheel trick lock, includes mount pad (11), its characterized in that: a rotation stopping frame (2) and a character wheel assembly are arranged in the mounting seat (11), one side of the rotation stopping frame (2) is rotatably connected to the mounting seat (11) through a rotating shaft (21), and a protrusion (22) is arranged on the rotation stopping frame (2);

the character wheel assembly comprises a central shaft (3), a plurality of character wheels (5) and coupling wheels (4), wherein the character wheels (5) are sleeved on the central shaft (3), a cam (6) is integrally formed on each character wheel (5), a coupling structure is arranged between each cam (6) and each coupling wheel (4), each coupling structure comprises a positioning column (61) and a positioning hole (42), the front end of each positioning column (61) is provided with an arc-shaped end surface (62), and each arc-shaped end surface (62) is matched with each positioning hole (42) in a guiding mode;

the coupling wheel (4) is provided with a groove (43) corresponding to the protrusion (22), the protrusion (22) is matched with the groove (43) in a positioning manner, a spring plate assembly is arranged in the mounting seat (11), and the spring plate assembly drives the protrusion (22) to be tightly abutted against the coupling wheel (4);

the anti-rotation device is characterized in that a bump (23) is arranged on the anti-rotation frame (2), a notch (44) communicated with the groove (43) is correspondingly formed in the coupling wheel (4), and the bump (23) is extended into the notch (44).

2. The code clearing mechanism of a combination wheel lock according to claim 1, wherein: the coupling wheel is characterized in that a return spring (12) is arranged between the mounting seat (11) and the central shaft (3), a check ring (31) is arranged on the central shaft (3), one end of the return spring (12) abuts against the check ring (31), the other end of the return spring (12) abuts against the mounting seat (11), and the return spring (12) drives the coupling wheel (4) to always have a movement trend away from the character wheel (5).

3. The code clearing mechanism of a combination wheel lock according to claim 1, wherein: the automatic zero resetting structure is further arranged in the mounting seat (11) and comprises a pawl piece (7), a plurality of pawls (72) are arranged on the pawl piece (7), the cam (6) is arranged to be a logarithmic spiral cam (6), and when the pawl piece (7) is turned over relatively, the pawls (72) are in poking fit with the logarithmic spiral cam (6).

4. The combination clearing mechanism of a combination wheel lock according to claim 3, wherein: an extension column (73) is arranged on the end face of the pawl (7), and a through hole (111) for the extension column (73) to extend out is correspondingly formed in the mounting seat (11); still including knob (8), sloping groove (81) have been seted up to the lateral wall of knob (8), extend post (73) with sloping groove (81) embedding cooperation works as when knob (8) rotate, sloping groove (81) drive extend post (73) up-and-down motion.

5. The code clearing mechanism of a combination wheel lock according to claim 1, wherein: the elastic sheet assembly comprises an elastic sheet main body (9) and a plurality of elastic sheets (91) arranged on the elastic sheet main body (9), and the elastic sheets (91) are abutted against the rotation stopping frame (2), so that the rotation stopping frame (2) always has a tendency of moving towards the character wheel assembly.

6. The combination clearing mechanism of a combination wheel lock according to claim 5, wherein: a supporting spring (112) is further arranged in the mounting seat (11), one end of the supporting spring (112) abuts against the mounting seat (11), and the other end of the supporting spring (112) abuts against the elastic sheet (91).

7. The combination clearing mechanism of a combination wheel lock according to claim 5, wherein: the elastic sheet main body (9) is further provided with an elastic shifting sheet (92), and the elastic shifting sheet (92) is matched with the side wall of the character wheel (5) in an abutting mode.

8. The combination clearing mechanism of a combination wheel lock according to claim 4, wherein: the front end of the rotation stopping frame (2) is provided with a rotation stopping block (24) in an extending mode, a lock cylinder assembly (82) is arranged in the knob (8), the lock cylinder assembly (82) comprises a lock block (83), and the lock block (83) is matched with the stop of the rotation stopping block (24).

9. The combination clearing mechanism of a combination wheel lock according to claim 8, wherein: a moving sleeve (84) is coaxially arranged in the knob (8), an expansion spring (85) is arranged between the moving sleeve (84) and the knob (8), and the expansion spring (85) drives the moving sleeve (84) to extend out of the knob (8) all the time; a fixed block (32) is arranged at the end part of the central shaft (3), an arc-shaped surface (841), a flat section (842) and an avoidance ring groove (843) are arranged on the outer wall of the movable sleeve (84), and a first transition inclined surface (844) is formed between the flat section (842) and the arc-shaped surface (841) on one side; when knob (8) rotate, fixed block (32) by arcwall face (841) remove to tangent plane (842), and will under the guide effect of first transition inclined plane (844) remove cover (84) and impress in knob (8), this moment fixed block (32) are located dodge annular (843).

10. The code clearing mechanism for a combination wheel lock according to claim 9, wherein: move cover (84) and still seted up constant head tank (846), embedded groove (847), constant head tank (846) communicate in dodge annular (843), constant head tank (846) are equipped with first derivation face (848), embedded groove (847) are equipped with second derivation face (849).

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