CN207377308U - Combination lock and changeable number lock core - Google Patents

Abstract

The utility model relates to a number lock and a variable number lock core. The number lock includes a housing, a rotating button barrel, a number lock shaft, a plurality of character wheels, a plurality of number changing parts, an axial moving device and a displacement recovery part. . When the plurality of character wheels rotate to the correct number position respectively, the sleeve groove of each number changing member corresponds to the adjacent shaft convex portion in the axial position, and the force-receiving member can be driven by the first external force to axially The mobile device pushes a plurality of horn barrels to be separated from the recesses of each character wheel, the number lock is in a variable state, and the knob barrel can be driven to rotate by a second external force. When at least one of the plurality of character wheels does not rotate to the correct number position, the movement of the number changing member in the axial position relative to the convex part of the shaft is restricted, restricting the multiple number changing cylinders from being separated from the recessed parts of each character wheel, and the number lock is in an immutable state. In the number state, the convex part of the shaft limits the movement of the number lock shaft in the axial position and prevents the rotation of the knob barrel.

Description

Combination lock and variable number lock core

technical field

The utility model relates to a combination lock and a variable number lock core.

Background technique

In public places such as stores, campuses, stations, and gyms, in order to display or temporarily store items, window cabinets, lockers, etc. will be equipped with locks to prevent deliberate theft or unintentional mistaking.

The locks used for the above-mentioned public place locks generally include key locks and combination locks. Key lock management is inconvenient and easy to lose. In contrast, when using a combination lock, the user can set a password without having to be equipped with a key, so there is no trouble with the above-mentioned key lock.

As shown in Figure 1, when the existing combination lock 90 desires to change the number, a sharp object is used to puncture the number changing part 99, so that the number changing wheel and the character wheel inside it are separated from the number changing state. This method requires tools for piercing, which is inconvenient to use.

To sum up, there is still room for improvement in existing combination locks and variable number lock cores.

Utility model content

The purpose of the utility model is to provide a variable number lock cylinder to solve the above-mentioned problems encountered in the prior art.

Another object of the present invention is to provide a combination lock to solve the above-mentioned problems encountered in the prior art.

In the embodiment of the present utility model, the variable number lock core of the present utility model includes a combination lock shaft, a plurality of character wheels, a plurality of number changing parts, an axial moving device and a displacement restoring part. The shaft of the combination lock is extended along the direction of the shaft, including a first end and a second end at opposite ends, and a plurality of protrusions of the shaft are arranged on the shaft of the combination lock. A plurality of character wheels are rotatably sleeved on the number lock shaft, and each character wheel has a first side close to the first end and a second side far away from the first end, and the first side is provided with a character wheel recessed part. A plurality of number changing parts are rotatably sleeved on the number lock shaft rod, wherein a plurality of adjacent number changing parts abut against each other, and each number changing part corresponds to a character wheel respectively, and includes a shaft sleeve and Change horn. There is an axially arranged sleeve groove on the inner side of the shaft sleeve, which fits on the combination lock shaft, and has a first end facing the first end and a second end away from the first end, wherein the second end passes through Pass the character wheel corresponding to the number changing piece. The horn changing cylinder is set radially outward from the first end of the shaft sleeve, and is detachably engaged with the character wheel concave portion of the character wheel corresponding to the number changing member. The axial moving device is arranged at the second end, and includes a rotating part and an axial moving part. The rotating member is arranged at the second end in a manner to be rotatable relative to the combination lock shaft, and a side of the rotating member facing the first end has a first slope. The axial moving part is arranged between the shaft sleeve of the number changing part closest to the second end and the rotating part in such a manner that it can move axially relative to the shaft rod of the combination lock. The displacement restoring part is arranged between the number changing part closest to the first end part and the first end part. Wherein, when a plurality of character wheels are respectively rotated to the correct number position, the sleeve groove of each number changing member corresponds to the axial position of the adjacent shaft protrusion, and the rotating member can be rotated until the first inclined plane is aligned with the shaft. Abut against the moving part, so that the axial moving part moves axially to push a plurality of changing horns to disengage from the recesses of each character wheel. At this time, the number lock is in the state of changing numbers, and the displacement restoring part provides a force away from the first end. In multiple variable number pieces.

In the embodiment of the present utility model, the combination lock of the present utility model includes a housing, a rotary knob barrel, a combination lock shaft, a plurality of character wheels, a plurality of number changing parts, an axial moving device and a displacement restoring part. The top surface of the housing is provided with an upper rotating button cylinder hole, a plurality of word wheel holes and force member holes in sequence, and the bottom surface of the housing is provided with a lower rotating button cylinder hole corresponding to the upper rotating button cylinder hole. The rotary knob barrel is pierced through the upper rotary knob barrel hole and the lower rotary knob barrel hole, and can rotate in the first direction as the axis. The rotary knob barrel has a concave portion on the cylindrical surface of the rotary knob barrel. The shaft of the combination lock is extended in the housing along the shaft direction perpendicular to the first direction, including a first end and a second end at opposite ends, and the first end is detachably engaged with the recess of the knob cylinder , the combination lock shaft is provided with a plurality of shaft protrusions. A plurality of character wheels are rotatably sleeved on the shaft of the number lock, each character wheel corresponds to a character wheel hole and part of the housing is exposed from the corresponding character wheel hole, and each character wheel has a The first side of the end portion and the second side away from the first end portion, the first side is provided with a character wheel recess. A plurality of number changing parts are rotatably sleeved on the number lock shaft rod, wherein a plurality of adjacent number changing parts abut against each other, and each number changing part corresponds to a character wheel respectively, and includes a shaft sleeve and Change horn. There is an axially arranged sleeve groove on the inner side of the shaft sleeve, which fits on the combination lock shaft, and has a first end close to the first end and a second end far away from the first end, wherein the second end passes through Pass the character wheel corresponding to the number changing piece. The horn changing cylinder is set radially outward from the first end of the shaft sleeve, and is detachably engaged with the character wheel concave portion of the character wheel corresponding to the number changing member. The axial moving device is arranged at the second end, and includes a rotating part and an axial moving part. The rotating member is arranged at the second end in a manner to be rotatable relative to the combination lock shaft. The rotating member has a first slope facing the first end, and the rotating member has a force receiving member extending out of the casing from the force receiving member hole. The axial moving part is arranged between the shaft sleeve of the number changing part closest to the second end and the rotating part in such a manner that it can move axially relative to the shaft rod of the combination lock. The displacement restoring part is arranged between the number changing part closest to the first end part and the first end part. Wherein, when the plurality of character wheels are respectively rotated to the correct number position, the sleeve groove of each number changing member corresponds to the axial position of the adjacent shaft protrusion. At this time, the force-bearing member can be driven by the first external force to rotate the rotating member until the first inclined plane abuts against the axial moving member, so that the axial moving member can move axially to push a plurality of changing horns out of the recesses of each character wheel, The combination lock is in a number-changing state, and the displacement recovery member provides a force away from the first end to act on the multiple number-changing members. The rotary knob cylinder can be driven to rotate by the second external force, so that the first end part is separated from the concave part of the rotary knob cylinder, so that the shaft rod of the combination lock can move axially.

In the embodiment of the present utility model, the combination lock of the present utility model includes a housing, a rotary knob barrel, a combination lock shaft, a plurality of character wheels, a plurality of number changing parts, an axial moving device and a displacement restoring part. The top surface of the housing is provided with an upper rotating button cylinder hole, a plurality of word wheel holes and force member holes in sequence, and the bottom surface of the housing is provided with a lower rotating button cylinder hole corresponding to the upper rotating button cylinder hole. The rotary button barrel passes through the upper rotary button barrel hole and the lower rotary button barrel hole, and is able to rotate in the first direction as the axis. The shaft of the combination lock extends in the casing along the shaft direction perpendicular to the first direction, and includes a first end and a second end at opposite ends. The shaft of the combination lock is provided with a plurality of protrusions of the shaft. A plurality of character wheels are rotatably sleeved on the number lock shaft, each character wheel corresponds to a character wheel hole and part of the housing is exposed from the corresponding character wheel hole, and each character wheel has a A first side of the barrel and a second side away from the knob barrel, the first side is provided with a character wheel recess. A plurality of number changing parts are rotatably sleeved on the number lock shaft rod, wherein a plurality of adjacent number changing parts abut against each other, and each number changing part corresponds to a character wheel respectively, and includes a shaft sleeve and Change horn. There is an axially arranged sleeve groove on the inner side of the shaft sleeve, which fits on the combination lock shaft, and has a first end close to the rotary knob cylinder and a second end far away from the rotary knob cylinder, wherein the second end passes through the The character wheel corresponding to the number change piece. The horn changing cylinder is set radially outward from the first end of the shaft sleeve, and is detachably engaged with the character wheel concave portion of the character wheel corresponding to the number changing member. The axial movement device is arranged at the second end, and includes a force-bearing member extending out of the housing from the force-receiving member hole. The displacement restoring part is arranged between the number changing part closest to the rotary knob barrel and the first end. Wherein, when a plurality of character wheels are respectively rotated to the correct number position, the sleeve groove of each number changing member corresponds to the axial position of the adjacent shaft protrusion, and the force-bearing member can be driven by the first external force to make it The axial moving device pushes a plurality of changing horns to disengage from the recesses of each character wheel, the number lock is in a state of changing numbers, and the turning knob can be driven to rotate by the second external force. When at least one of the multiple character wheels is not rotated to the correct number position, the movement of the number changing member relative to the convex part of the shaft is restricted in the axial position, and the number changing horns are restricted from breaking away from the concave parts of each character wheel, and the number lock is in an immutable state. In the state of the number, the protrusion of the shaft restricts the movement of the shaft of the number lock in the axial position, preventing the rotation of the knob cylinder.

In an embodiment of the present invention, the axial moving device includes a rotating element and an axial moving element. The rotating part is arranged at the second end in a manner to be rotatable relative to the combination lock shaft, the side of the rotating part facing the knob cylinder has a first slope, and the rotating part has a force-bearing part. The axial moving part is arranged between the shaft sleeve and the rotating part of the number changing part farthest from the rotating knob cylinder in a manner that can move axially relative to the combination lock shaft. When a plurality of character wheels are rotated to the correct number positions, the force-bearing member can be driven by the first external force to make the rotating member rotate to the first inclined plane and abut against the axial moving member, so that the axial moving member can move axially to push multiple The changing horn is separated from the recesses of the character wheels.

In the embodiment of the present utility model, when a plurality of character wheels are respectively rotated to the correct number positions, the force-bearing member can be driven to rotate by the first external force, so that one end located in the housing pushes a plurality of changing horns to disengage from the recesses of each character wheel .

In the embodiment of the present utility model, there is a concave part of the rotary knob cylinder on the cylindrical surface of the rotary knob cylinder, and the first end part is detachably engaged in the concave part of the rotary knob cylinder. , the sleeve groove of each number changer corresponds to the adjacent shaft protrusion in the axial position, and the rotary knob cylinder can be driven to rotate by the second external force, so that the first end part is separated from the concave part of the rotary knob cylinder. The shaft rod of the combination lock produces axial movement.

In an embodiment of the present invention, the concave portion of the character wheel further includes an engaging portion, the horn changing horn further includes an engaging protrusion, and the engaging protrusion is detachably engaged with the engaging portion.

In an embodiment of the present invention, the engaging portion is a notch formed outwardly from the inner surface of the character wheel.

Based on the above, the combination lock using the variable number lock core of the present invention and the combination lock of the present invention can change numbers more conveniently, thereby solving the problems mentioned in the prior art.

It should be understood that the above general description and the following specific embodiments are only illustrative and explanatory, and cannot limit the scope of the claims of the present utility model.

Description of drawings

Fig. 1 is a schematic diagram of the prior art;

Fig. 2 is the embodiment schematic diagram of the utility model combination lock;

3A and 3B are exploded schematic diagrams of an embodiment of the combination lock of the present invention;

Figure 3C is an enlarged schematic view of the number changing part;

Fig. 4A is the relative position of the combination lock transfer button cylinder, combination lock shaft, multiple character wheels, multiple number changing parts, axial moving device and displacement recovery part when the axial moving part does not touch the first inclined surface of the utility model. location map;

Figure 4B is a cross-sectional view of Figure 4A;

Figure 5A is a relative view of the combination lock transfer button cylinder, combination lock shaft, multiple character wheels, multiple number changing parts, axial moving device and displacement restoring part of the utility model when the axial moving part has abutted against the first inclined plane location map;

Figure 5B is a cross-sectional view of Figure 5A;

Fig. 6 is a schematic diagram of an embodiment in which the first end of the combination lock of the present invention is separated from the recess of the rotary knob barrel.

Description of main component symbols:

90 combination lock

99 Number Change Department

100 shell

110 Top

112 Hole for the upper knob barrel

114 character wheel hole

116 Holes for force-bearing parts

120 Bottom

122 Bottom knob barrel hole

200 Knob Barrel

300 combination lock shaft

310 first end

320 second end

330 Shaft boss

400 character wheel

410 First side

420 second side

450 character wheel recess

458 Snapping part

500 change parts

510 Changing Horn

518 snapping convex piece

520 shaft sleeve

521 first end

522 second end

523 Socket groove

600 axial movement device

601 first position

602 second position

610 Axial moving parts

620 rotating parts

621 Force member

622 First slope

700 displacement recovery pieces

800 variable number lock cylinder

900 combination lock

901 First Direction

902 Shaft direction

Detailed ways

As shown in Fig. 2, in one embodiment, the combination lock 900 of the present utility model is used as a cabinet lock. However, in different embodiments, the combination lock 900 can also be used as a glass lock, window lock, furniture lock, etc.

As shown in Figures 3A and 3B, the explosion diagram of the combination lock 900 of the present utility model, the combination lock 900 of the present utility model includes a housing 100, a rotary knob barrel 200, a combination lock shaft 300, a plurality of character wheels 400, and a plurality of number changers. Part 500, axial movement device 600 and displacement restoring part 700. The top surface 110 of the housing 100 is provided with an upper rotation button cylinder hole 112, a plurality of character wheel holes 114 and a force-bearing member hole 116 in sequence, and the bottom surface 120 of the housing 100 is provided with a lower rotation button corresponding to the upper rotation button cylinder hole 112. Button cylinder hole 122.

In the embodiment shown in FIGS. 3A and 3B , the rotary knob barrel 200 passes through the upper rotary button barrel hole 112 and the lower rotary button barrel hole 122 through the casing 100 , and can rotate in the first direction 901 as the axis. The combination lock shaft 300 extends along the shaft direction 902 perpendicular to the first direction 901 in the housing 100 , and includes a first end 310 and a second end 320 located at opposite ends. A plurality of shaft protrusions 330 are disposed on the combination lock shaft 300 . A plurality of character wheels 400 are rotatably sleeved on the number lock shaft 300 , and each character wheel 400 is respectively corresponding to a character wheel hole 114 and partially exposed from the housing 100 through the corresponding character wheel hole 114 . Each character wheel 400 has a first side 410 close to the rotary knob barrel 200 and a second side 420 away from the rotary knob barrel 200 respectively, and the first side 410 is provided with a character wheel recess 450 . Viewed from different angles, the first side 410 is close to the first end 310 , and the second side 420 is away from the first end 320 .

In the embodiment shown in Figure 3B, a plurality of number changing parts 500 are rotatably sleeved on the combination lock shaft 300, wherein a plurality of adjacent number changing parts 500 abut against each other, and each number changing part 500 is respectively It corresponds to the character wheel 400 and includes a shaft sleeve 520 and a horn changing horn 510 . The inner side of the shaft sleeve 520 has a sleeve groove 523 arranged axially, fits on the combination lock shaft 300 , and has a first end 521 close to the rotary knob barrel 200 and a second end 522 far away from the rotary knob barrel 200 , Wherein the second end 522 passes through the character wheel 400 corresponding to the number changing member 500 . Seen from different angles, the first end 521 is close to the first end 310, and the second end 522 is far away from the first end 310. The sleeve groove 523 is formed on the inner surface of the sleeve groove 523 , and preferably extends from the end face of the second end 522 to the first end 521 .

In the embodiment shown in Figures 3A and 3B, the horn changer 510 is set radially outward from the first end 521 of the shaft sleeve 520, and is detachably engaged with the corresponding horn changer 500. The character wheel recess 450 of the character wheel 400 . In the embodiment shown in FIG. 3C , the character wheel concave portion 450 further includes an engaging portion 458 , the horn changing horn 510 further includes an engaging protrusion 518 , and the engaging protrusion 518 is detachably engaged with the engaging portion 458 . Wherein, the engaging portion 458 may be a notch formed outwardly from the inner surface of the character wheel 400 .

In the embodiment shown in FIGS. 3A and 3B , the axial movement device 600 is disposed at the second end portion 320 , and includes a force receiving member 621 extending from the force receiving member hole 116 out of the casing 100 . More specifically, the axial moving device 600 includes a rotating part 620 and an axial moving part 610 . The rotating member 620 is disposed on the second end 320 in a manner to be rotatable relative to the combination lock shaft 300 . The rotating member 620 has a first inclined surface 622 on the side facing the rotary knob barrel 200 (that is, close to the first end 310 ). The rotating member 620 has a force receiving member 621 . The axial moving part 610 is arranged on the shaft sleeve 520 of the number changing part 500 farthest from the rotary knob cylinder 200 (that is, farthest from the first end 310 ) in a manner that can move axially relative to the combination lock shaft 300 . between 620 pieces.

In the embodiment shown in FIGS. 3A and 3B , the displacement restoring member 700 is disposed between the first end 310 and the number changing member 500 closest to the rotary knob barrel 200 (that is, closest to the first end 310 ). Wherein, when the plurality of character wheels 400 are respectively rotated to the correct number position, the sleeve groove 523 (see FIG. 3B ) of each number changing member 500 corresponds to the axial position of the adjacent shaft protrusion 330, and is subject to The force member 621 can be driven by the first external force so that the axial movement device 600 pushes the plurality of number changing cylinders 510 to disengage from the recesses 450 of the character wheels (see FIG. 3A ). The second external force drives the rotation. At this time, the displacement recovery member 700 provides a force away from the first end portion 310 to act on the multiple number changing members 500 . When at least one of the plurality of character wheels 400 is not rotated to the correct number position, the shaft protrusion 330 restricts the movement of the adjacent number changing member 500 in the axial position, and restricts the plurality of number changing cylinders 510 from breaking away from the recesses 450 of each character wheel. The combination lock 900 is in an unchangeable number state, and the shaft protrusion 330 restricts the movement of the combination lock shaft 300 in the axial position, preventing the rotation of the rotary knob cylinder 200 . More specific action methods are described in detail as follows.

In the embodiment shown in Figures 3A and 3B, when a plurality of character wheels 400 are respectively rotated to the correct number position, because the sleeve groove 523 (see Figure 3B) of each number changing part 500 is in contact with the adjacent shaft protrusion 330 are corresponding in axial position, so the variable number member 500 can avoid the axial movement restriction of the shaft protrusion 330 through the sleeve groove 523 . Therefore, when the force receiving member 621 is driven by the first external force to make the rotating member 620 rotate from the first position 601 as shown in FIG. 4A relative to the combination lock shaft 300 to the second position 602 as shown in FIG. 5A , the axial movement The member 610 is pushed to move axially toward the first end portion 310 due to abutting against the first inclined surface 622 . And because the axial moving part 610 is in contact with the number changing part 500 farthest from the first end 310, and the adjacent number changing parts 500 are in contact with each other, so all the number changing parts 500 will be axially moved thereby 610 to push the horn changing horn 510 away from the concave part 450 of each character wheel (see Fig. 3A), or more specifically, make the engaging convex part 518 engage with the engaging part 458 as shown in Fig. As shown in 5B, it is separated from the engaging part 458, so that the combination lock 900 is in a variable number state.

In this embodiment, the displacement restoring member 700 is a spring, which will be compressed when the shifting member 500 is pushed toward the first end 310 by the axial moving member 610 , so as to provide a displacement away from the first end 310 based on deformation. The power acts on the number changing part 500. When the first external force applied to the force receiving member 621 disappears, the force acting on the number changing member 500 away from the first end 310 can make the number changing member 500 move away from the first end 310 and return to its original position.

On the other hand, if any of the plurality of character wheels 400 is not rotated to the correct number position, the shaft protrusion 330 restricts the axial movement of the number changing member 500, and the adjacent number changing members 500 abut against each other, so all None of the number changing parts 500 can move axially, and the axial movement of the axial moving part 610 abutting against the number changing parts 500 is restricted. At this time, even if the force receiving member 621 is subjected to the first external force, the rotating member 620 will not be driven to rotate because of the abutment relationship between the first inclined surface 622 and the axially moving member 610 .

Furthermore, the variable number lock cylinder 800 of the present invention includes the above-mentioned combination lock shaft 300 , a plurality of character wheels 400 , a plurality of number changing parts 500 , an axial moving device 600 and a displacement restoring part 700 . For the combination lock 900 using the variable number lock core 800 of the present utility model, when the user wants to change the set unlocking number, he only needs to use the parts that the variable number lock core 800 itself has, and does not need to use external components as in the prior art. Devices such as pins. In this way, the convenience in use can be improved. On the other hand, in the embodiment shown in FIG. 2 , because the force-bearing member 621 extends from the force-receiving member hole 116 out of the top surface 110 of the casing 100, that is to say, it is used facing the character wheel 400 that exposes the casing 100. By. Therefore, the user can apply an external force to the force-receiving member 621 by means of dialing, etc., so that the combination lock 900 is in the state of changing the number to change the number, and the convenience in use is further improved.

On the other hand, in the embodiment shown in FIG. 4A and FIG. 6 , the cylindrical surface 210 of the knob barrel 200 has a knob barrel concave portion 230 , and the first end portion 310 is engaged in the knob barrel concave portion 230 in a detachable manner. . When a plurality of character wheels 400 are respectively rotated to the correct number position, because the sleeve groove 523 (see FIG. 3B ) of each number changing member 500 corresponds to the axial position of the adjacent shaft protrusion 330, the shaft The rod protrusion 330 can move axially in the sleeve groove 523 . Moreover, the side of the knob cylinder concave portion 523 is substantially inclined relative to the first end portion 310, so when the knob cylinder 200 is driven by the second external force to rotate from the embodiment shown in FIG. 4A to the embodiment shown in FIG. 6 , The first end portion 310 will be moved away from the concave portion 523 of the rotary knob cylinder by the side of the concave portion 523 of the rotary knob cylinder, so that the combination lock shaft 300 will move axially. In other words, when the plurality of character wheels 400 are respectively rotated to the correct number position, the shaft protrusion 330 will not interfere with the rotation of the rotary knob barrel 200, that is, the rotary knob barrel 200 can be driven by the second external force to rotate from the embodiment shown in FIG. 4A To the embodiment shown in Figure 6.

In the embodiment shown in FIG. 4A and FIG. 6, the displacement recovery member 700 is a spring, which will be compressed when the combination lock shaft 300 is pushed by the side of the knob barrel recess 523 and moves toward the number changing member 500, thereby providing The force generated based on the deformation away from the index changing member 500 acts on the first end portion 310 . When the second external force applied to the knob cylinder 200 disappears, the force acting on the first end 310 away from the number changing member 500 can make the first end 310 move away from the number changing member 500 and return to the original position.

When at least one of the number wheels 400 is not rotated to the correct number position, the shaft protrusion 330 cannot enter the sleeve groove 523 , thus restricting the axial movement of the number lock shaft 300 . At this moment, even if the rotary knob cylinder 200 is subjected to the second external force, the rotary knob cylinder 200 will not be driven to rotate due to the contact relationship between the rotary knob cylinder concave portion 523 and the first end portion 310 .

Although the foregoing description and accompanying drawings have disclosed preferred embodiments of the invention, it must be understood that various additions, modifications and substitutions may be made to the preferred embodiments of the invention without departing from the preferred embodiments of the invention as set forth in the appended claims. The spirit and scope of the utility model principle defined. Those familiar with the art to which the invention pertains will appreciate that the invention is capable of modification in many forms, structures, arrangements, proportions, materials, elements and assemblies. Therefore, the embodiments disclosed herein should be regarded as illustrating the utility model rather than limiting the utility model. The scope of the present invention should be defined by the appended claims, including their legal equivalents, and not limited by the foregoing description.

Claims (10)

1. A variable number lock core, characterized in that it comprises: A combination lock shaft extending along a shaft direction, including a first end and a second end located at opposite ends, and a plurality of shaft protrusions are arranged on the combination lock shaft; A plurality of character wheels are rotatably sleeved on the combination lock shaft, each character wheel has a first side facing the first end and a second side away from the first end, the The first side is provided with a wheel recess; A plurality of number-changing parts are rotatably sleeved on the shaft of the combination lock, wherein the adjacent number-changing parts abut against each other, and each number-changing part corresponds to a character wheel respectively, and includes: A shaft sleeve has an axially arranged sleeve groove on the inner side, fits on the shaft rod of the number lock, and has a first end close to the first end and a second end far away from the first end. end, wherein the second end passes through the character wheel corresponding to the number changing member; a changing horn, arranged radially outward from the first end of the shaft sleeve, and detachably engaged with the character wheel concave portion of the character wheel corresponding to the number changing member; An axial movement device, disposed on the second end, includes: a rotating part, which is arranged on the second end part in a manner to be rotatable relative to the shaft rod of the combination lock, and has a first slope on the side facing the first end part of the rotating part; An axial moving part is arranged between the shaft sleeve of the number changing part closest to the second end and the rotating part in a manner that can move axially relative to the combination lock shaft; a displacement restoration part, arranged between the number changing part closest to the first end part and the first end part; Wherein, when a plurality of character wheels are respectively rotated to a correct number position, the sleeve groove of each number changing member corresponds to the axial position of the adjacent shaft protrusion, and the rotating member can rotate to the The first inclined surface abuts against the axial moving part, causing the axial moving part to move axially to push the plurality of changing horns to disengage from the recesses of the character wheels. At this time, the variable number lock core is in a variable number state , the displacement recovery member provides a force away from the first end to act on the plurality of number changing members. 2. The variable number lock cylinder according to claim 1, characterized in that, the recessed part of the character wheel further includes an engaging part, and the changing horn further includes an engaging protrusion, and the engaging protrusion is detachably engaged on the engaging part. 3. The variable number lock cylinder according to claim 2, wherein the engaging portion is a notch formed outwardly from the inner surface of the character wheel. 4. A combination lock, characterized in that it comprises: A casing, a top surface of the casing is provided with an up-rotating button cylinder hole, a plurality of character wheel holes, and a force-bearing member hole in sequence, and a bottom surface of the casing is provided with a corresponding to the up-rotating button cylinder hole. the lower turn button barrel hole; A rotary button barrel, through the upper rotary button hole and the lower rotary button hole, is pierced through the housing, and can rotate in a first direction as the axis, wherein a cylindrical surface of the rotary button barrel has a rotary button barrel recess; A combination lock shaft extends in the casing along a shaft direction perpendicular to the first direction, and includes a first end and a second end at opposite ends, the first end is detachable The mode is engaged with the concave part of the rotary knob cylinder, and the number lock shaft is provided with a plurality of shaft convex parts; A plurality of character wheels are rotatably sleeved on the shaft of the number lock, each character wheel corresponds to a character wheel hole and partly exposes the housing from the corresponding character wheel hole, each character wheel respectively have a first side close to the first end and a second side away from the second end, the first side is provided with a character wheel recess; A plurality of number-changing parts are rotatably sleeved on the shaft of the combination lock, wherein the adjacent number-changing parts abut against each other, and each number-changing part corresponds to a character wheel respectively, and includes: A shaft sleeve has an axially arranged sleeve groove on the inner side, fits on the shaft rod of the number lock, and has a first end close to the first end and a second end far away from the first end. end, wherein the second end passes through the character wheel corresponding to the number changing member; a changing horn, arranged radially outward from the first end of the shaft sleeve, and detachably engaged with the character wheel concave portion of the character wheel corresponding to the number changing member; An axial movement device, disposed on the second end, includes: A rotating part is arranged on the second end in a manner that can rotate relative to the combination lock shaft, the rotating part has a first inclined surface on the side facing the first end, and the rotating part has a force-bearing part from the force receiving member hole extends out of the housing; An axial moving part is arranged between the shaft sleeve of the number changing part closest to the second end and the rotating part in a manner that can move axially relative to the combination lock shaft; a displacement restoration part, arranged between the number changing part closest to the first end part and the first end part; Wherein, when a plurality of character wheels are respectively rotated to a correct number position, the sleeve groove of each number changer corresponds to the axial position of the adjacent shaft protrusion: The force-bearing part can be driven by a first external force to rotate the rotating part until the first inclined surface abuts against the axial moving part, so that the axial moving part can move axially to push the multiple horns from each of the characters. The wheel recess is disengaged, and the combination lock is in a number-changing state. At this time, the displacement recovery member provides a force away from the first end to act on the plurality of number-changing members; The rotary knob barrel can be driven to rotate by a second external force, so that the first end part is separated from the concave part of the rotary knob barrel to make the shaft rod of the combination lock move axially. 5. A combination lock, characterized in that it comprises: A casing, a top surface of the casing is provided with an up-rotating button cylinder hole, a plurality of character wheel holes and a force-bearing member hole in sequence, and a bottom surface of the casing is provided with a corresponding to the up-rotating button cylinder hole. Bottom button barrel hole; a rotary button barrel, through the upper rotary button barrel hole and the lower rotary button barrel hole, is pierced through the housing, and can be rotated in a first direction as the axis; A combination lock shaft extends in the housing along a shaft direction perpendicular to the first direction, and includes a first end and a second end located at opposite ends. The combination lock shaft is provided with a plurality of shaft protrusions; A plurality of character wheels are rotatably sleeved on the shaft of the number lock, each character wheel corresponds to a character wheel hole and partly exposes the housing from the corresponding character wheel hole, each character wheel Each has a first side close to the knob cylinder and a second side away from the knob cylinder, and the first side is provided with a character wheel recess; A plurality of number-changing parts are rotatably sleeved on the shaft of the combination lock, wherein the adjacent number-changing parts abut against each other, and each number-changing part corresponds to a character wheel respectively, and includes: A shaft sleeve with an axially arranged sleeve groove on the inner side fits on the combination lock shaft, and has a first end close to the rotary knob cylinder and a second end far away from the rotary knob cylinder, Wherein the second end passes through the character wheel corresponding to the number changing member; a changing horn, arranged radially outward from the first end of the shaft sleeve, and detachably engaged with the character wheel concave portion of the character wheel corresponding to the number changing member; an axial movement device, disposed on the second end, comprising a force-bearing member extending out of the housing from the force-receiving member hole; a displacement restoring part, arranged between the number changing part closest to the knob cylinder and the first end; Wherein, when a plurality of character wheels are respectively rotated to a correct number position, the sleeve groove of each number changing member corresponds to the axial position of the adjacent shaft protrusion, and the force-bearing member can be subjected to a Driven by the first external force, the axial moving device pushes the plurality of changing horns to disengage from the recesses of the character wheels. At least one of the wheels has not rotated to the correct number position, and the movement of the number changing member relative to the shaft protrusion is restricted in the axial position, and the number changing horns are restricted from breaking away from the recesses of the character wheels. The combination lock is in the In an unchangeable number state, the protrusion of the shaft restricts the movement of the shaft of the number lock in the axial position and prevents the rotation of the rotary knob cylinder. 6. The combination lock according to claim 5, wherein the axial movement device comprises: A rotating part, which is arranged on the second end in a manner to be rotatable relative to the shaft rod of the combination lock, the side of the rotating part facing the knob cylinder has a first slope, and the rotating part has the force-bearing part; An axial moving part is arranged between the shaft sleeve and the rotating part of the number changing part farthest from the rotating knob barrel in a manner that can move axially relative to the combination lock shaft; When a plurality of character wheels are respectively rotated to the correct number positions, the force-bearing member can be driven by the first external force to rotate the rotating member until the first inclined surface abuts against the axial moving member, so that the axial moving member generates a shaft. Move to push the plurality of changing horns to break away from the recesses of the character wheels. 7. The combination lock according to claim 5, wherein when the plurality of character wheels are respectively rotated to the correct number positions, the force-bearing member can be driven to rotate by the first external force so that it is located at one end of the housing Push the plurality of changing horns to break away from the recesses of the character wheels. 8 . The combination lock according to claim 5 , wherein a cylindrical surface of the rotary knob barrel has a concave portion of the rotary knob barrel, and the first end portion is engaged in the concave portion of the rotary knob barrel in a detachable manner. When a plurality of character wheels are respectively rotated to the correct number position, the groove of the sleeve of each number changing part corresponds to the axial position of the adjacent shaft protrusion, and the knob cylinder can be received by the second number. The rotation is driven by two external forces, so that the first end part is separated from the concave part of the rotary knob cylinder, so that the shaft rod of the number lock is axially moved. 9. The combination lock according to claim 4 or 5, wherein the recessed portion of the character wheel further includes an engaging portion, and the changing horn further includes an engaging protrusion, and the engaging protrusion is detachably engaged with The engaging part. 10. The combination lock according to claim 9, wherein the engaging portion is a notch formed outwardly from the inner surface of the character wheel.