Combination lock with two unlocking modes

Abstract

Combination lock with two unlocking modes, including: - a housing (10); - a plurality of number wheel units (20) which are rotatably mounted in the housing (10) and can be rotated by the user; - a latch (30) which is slidably arranged in the housing (10) and is inserted through the number wheel units (20); - a coupling mechanism (40) which is mounted displaceably or rotatably in the housing (10) and is connected to the number wheel units (20); - an actuating element (50) which can be actuated by the user and is connected to the coupling mechanism (40); and - an output mechanism (60) connected to the latch (30) and the actuating element (50) and having an unlocked state and a locked state; characterized by that the number wheel units (20) then allow a displacement of the bolt (30) relative to the number wheel units (20) when they are rotated to a user code, so that the output mechanism (60) can be switched to the unlocked state under these circumstances; and that the user is allowed to move or rotate the actuating element (50) when the number wheel units (20) are rotated to an administrator code, wherein the coupling mechanism (40) can be caused to move or rotate relative to the number wheel units (20) by the actuating element (50) so that the output mechanism (60) can be switched to the unlocked state.

Description

The invention relates to a number lock, in particular a security lock for portable electronic devices, a cabinet lock or a padlock,In today's society, there are numerous devices equipped with dial locks, for example laptop locks for protection against theft, locks for lock boxes in shopping centers, or padlocks for various purposes.However, the conventional dial locks are configured such that the dial lock is unlockable with only one code, so that the dial lock cannot be opened when the user forgets the code. In particular, when a device or a device is closed with a number lock, it is impossible to take or open the device or the device, e.g., a laptop or a cabinet, which may lead to great problems.Therefore, the conventional locks are in need of improvement.The object of the invention is to provide a number lock with two unlocking modes, in which number lock two modes with two different codes are available for unlocking, so that the user can still unlock the number lock with a further code, even if he forgets a code.The object is achieved according to the invention by a numerical lock having two unlocking modes with the features of claims 1 and 12. Advantageous embodiments are the subject of the dependent claims.The numerical lock according to the invention with two unlocking modes comprises: - a housing;a plurality of numeral wheel units rotatably supported in the housing and rotatable by the user;a latch slidably disposed in the housing and inserted through the number wheel units;a link mechanism slidably or rotatably disposed in the housing and connected to the numeral wheel units;an actuator operable by the user and connected to the linkage mechanism; andan output mechanism connected to the latch and the actuator and having an unlocked state and a locked state.According to the invention, the dial units permit displacement of the latch relative to the dial units when the dial units are rotated to a user code. Thereby, the output mechanism can be switched to the unlocked state. When the numeral wheel units are code rotated to a manager code, the user is permitted to slide or rotate the actuator, and the linkage mechanism can be caused to slide or rotate relative to the numeral wheel units to make the output mechanism switch to the unlocked state.The invention further provides a two-mode lock for a payment unit comprising:a housing;a plurality of numeral wheel units rotatably supported in the housing and rotatable by the user;a latch slidably disposed in the housing and inserted through the number wheel units;a link mechanism slidably or rotatably disposed in the housing and connected to the numeral wheel units;an actuator operable by the user and connected to the link mechanism and one of the numeral wheel units; andan output mechanism connected to the latch and having an unlocked state and a locked state.According to the invention, the dial units permit displacement of the latch relative to the dial units when the dial units are rotated to a user code. Thereby, the output mechanism can be switched to the unlocked state. When the numeral wheel units are rotated to a manager code, the user is permitted to move or rotate the actuator, and the linkage mechanism can be caused to move or rotate relative to the numeral wheel units to permit simultaneous movement of the numeral wheel units and the latch to cause the output mechanism to be switched to the unlocked state.If the user initially knows only one user code and turns all the dial units to the user code, the latch may be slid relative to the dial units to switch the output mechanism to the unlocked state and perform the further unlocking process. The paylock according to the invention has the advantage that when the user forgets the user code, the user can turn to the manager (e.g. the manufacturer of the paylock or the manager of a shopping center) to obtain the manager code. Once all the dial units have been rotated to the manager code, the user may actuate the actuator to switch the output mechanism to the unlocked state and perform the further unlocking process. In the two modes, the number lock can be unlocked with two different codes, so that the user can unlock the number lock with another code even if he has forgotten the user code.The invention is described in detail below on the basis of exemplary embodiments and with reference to the drawing. The drawing shows: FIG. 1 shows a perspective view of a first exemplary embodiment of a numerical lock according to the invention with two unlocking modes, FIG. 2 is a schematic illustration of the internal structure of the number lock according to the invention in FIG. 1, FIGS. 3 to 5 show components of the number lock according to the invention in FIG. 1 in an exploded view, FIG. 6 shows a front and sectional view of the number lock according to the invention in FIG. 1, FIGS. 7 to 9 show movements of the number lock according to the invention in FIG. 1 in plan view and sectional view, FIGS. 10 to 11 show movements of certain coherent components of the inner structure of the number lock according to the invention in FIG. 1 in plan view, FIG. 12 is a side and sectional view of the number lock according to the invention in FIG. 1, FIG. 13 is a top view of a second embodiment of the number lock according to the invention, FIG. 14 shows a schematic illustration of a movement of a component of the number lock according to the invention in FIG. 13, FIG. 15 is a schematic view showing the internal structure of a third embodiment of the present invention, FIG. 16 is an exploded view of the number lock according to the invention in FIG. 15 , FIGS. 17 to 18 show a side and sectional view of movements of certain coherent components of the number lock according to the invention in FIG. 15, FIGS. 19 to 20 show a further side and sectional view of movements of certain coherent components of the number lock according to the invention in FIG. 15, FIG. 21 shows a schematic illustration of a fourth exemplary embodiment of the number lock according to the invention, FIG. 22 shows a schematic illustration of the unlocking of the number lock according to the invention in FIG. 21 with a user code, and FIG. 23 shows a schematic illustration of the unlocking of the number lock according to the invention in FIG. 21 with a manager code.In the following, objects, features and advantages of the present invention are explained in more detail on the basis of the detailed description of exemplary embodiments and the appended drawing. The invention is not intended to be limited to the features described in the specification and to the features apparent from the drawings.The numerical lock with two unlocking modes according to the invention comprises two embodiments, wherein the first embodiment is illustrated with the first, second and third exemplary embodiments and the second embodiment with the fourth exemplary embodiment. As shown in FIGS. 1 to 3, the two-unlocking mode dial lock according to the first embodiment includes a housing 10, a plurality of dial units 20, a latch 30, a link mechanism 40, an operating member 50, and an output mechanism 60.On the housing 10, a plurality of through holes are provided from which the number wheel units 20 and the operating member 50 protrude.As shown in FIGS. 2 to 4 and 7, the numeral wheel units 20 are rotatably supported in the housing 10 and can be rotated by the user. In the first embodiment, each number wheel unit 20 includes an inner sleeve 21, an outer sleeve 22, and a number wheel 23. the inner sleeve 21 is inserted into the outer sleeve 22, and the outer sleeve 22 is inserted into the number wheel 23. The numeral wheel 23 is a member that protrudes from the housing 10 and can be rotated by the user. When the user rotates the numeral wheel 23, the numeral wheel 23 will cause the outer sleeve 22 and the inner sleeve 21 to rotate simultaneously. Here, the numeral wheel 23, the outer sleeve 22, and the inner sleeve 21 are connected to each other so as not to be rotatable relative to each other. If necessary, however, they can be arranged rotatably relative to one another. The inner sleeve 21 is provided with an inner recess 211 which is preferably disposed radially recessed on the inner wall surface of the inner sleeve 21 so as to extend to both axial ends of the inner sleeve 21. However, it is also possible to arrange the inner recess 211 at a further location or to form it in a further shape. The outer sleeve 22 is provided with an outer recess 221 which is preferably arranged radially recessed on the outer wall surface of the outer sleeve 22. However, it is also possible to arrange the outer recess 221 at a further location.The latch 30 is slidably disposed in the housing 10 and inserted through the number wheel units 20. Preferably, the latch 30 is inserted through the inner bushes 21 of the number wheel units 20 so as to correspond to the inner recesses 211 of the inner bushes 21. On the outer wall surface of the rim 30, a plurality of protrusions 31 are disposed. Once the protrusions 31 respectively correspond to the inner recesses 211 of the inner bushes 21, the latch 30 can be slid relative to the number wheel units 20.As shown in FIGS. 2, 3, 7, and 9 to 11, the link mechanism 40 is slidably or rotatably disposed in the housing 10 and connected to the numeral wheel units 20. In the first embodiment, the coupling mechanism 40 includes a pass-through member 41 and a reversing / sliding member 42.The pass-through member 41 is slidably disposed in the housing 10 and tends to slide toward the reversing / sliding member 42, the pass-through member 41 corresponding to the outer recesses 221 of the outer bushing 22 of the numeral wheel units 20 (see FIGS. 7 and 9 ). Preferably, the push-through element 41 is caused to slide in the direction of the turning / sliding element 42 under the action of an elastic element. It is also conceivable to displace the plug-through element 41 by two magnets which repel one another or in some other way.The reversing / sliding element 42 is arranged displaceably in the housing 10 and tends to be displaced facing away from the push-through element 41, wherein the displacement direction of the reversing / sliding element 42 and the displacement direction of the push-through element 41 are not parallel to one another. Preferably, the displacement direction of the reversing / sliding element 42 and the displacement direction of the plug-through element 41 run perpendicular to one another. By the turning / sliding element 42 shifting toward the through-member 41, it can slide the through-member 41 toward the number wheel units 20 (see FIGS. 10 and 11 ). Preferably, the turning / sliding element 42 is pushed under the action of an elastic element in the direction of the plug-through element 41. It is also conceivable to push the plug-through element 41 through two magnets which repel one another or in some other way.The operating member 50 is operable by a user and connected to the link mechanism 40. In the first embodiment, the operating member 50 is operated by rotation. Alternatively, the operating member 50 may be operated by pushing or pressing. In the first embodiment, the operating member 50 is operated (rotated) to subsequently push the reversing / sliding member 42 (see FIGS. 10 and 11 ). Thereby, the reversing / sliding member 42 slides the insert member 41 toward the number wheel units 20 (see FIGS. 7 and 9 ). If the number wheel units 20 are not all rotated to a specific code, the pass-through element 41 cannot be displaced in the direction of the number wheel units 20 and the reversing / sliding element 42 cannot be displaced in the direction of the pass-through element 41. As a result, the operating member 50 cannot be operated (rotated). The reversing / sliding element 42 serves to change the direction in which the actuating element 50 transmits the force. This results in more options for the position of the actuating element 50, which is advantageous for a flexible space configuration of the whole number lock. It is conceivable to omit the reversing / sliding element 42 and to actuate the actuating element 50 such that the actuating element 50 directly pushes the push-through element 41 in the direction of the number wheel units 20.As shown in FIGS. 2, 5, 6, and 12, the output mechanism 60 is connected to the latch 30 and the operating member 50, and has an unlocked state and a locked state. In the first embodiment, the unlocked state is a state in which the output mechanism 60 can be operated by the user to unlock the numeral lock. However, the configuration of the output mechanism 60 is not limited thereto. Alternatively, the output mechanism 60 may be configured such that the output mechanism 60 is in an already unlocked state.As shown in FIGS. 4, 7 and 8, the numeral wheel units 20 then allow the latch 30 to be displaced relative to the numeral wheel units 20 when rotated to a user code, and the output mechanism 60 is switched to the unlocked state by the displacement of the latch 30. In the first embodiment, the inner recesses 211 of the inner bushes 21 of the numeral wheel units 20 are in an even row when the numeral wheel units 20 are rotated to the user code. Thereby, the protrusions 31 of the latch 30 can pass through the inner recesses 211, so that the latch 30 becomes displaceable relative to the number wheel units 20.As shown in FIGS. 3, 7 and 9, the numeral wheel units 20 then permit translation or rotation of the linkage mechanism 40 relative to the numeral wheel units 20 when rotated to a manager code. This allows the user to slide or rotate the actuator 50. At this time, the displacement or rotation of the operating member 50 causes the output mechanism 60 to be switched to the unlocked state. When the numeral wheel units 20 are rotated to the manager code, the user is given a VerschiebungoderDrehungdesBetätigungselements50gestattet and the link mechanism 40 is caused to slide or rotate relative to the numeral wheel units 20. At this time, the displacement or rotation of the operating member 50 also causes the output mechanism 60 to be switched to the unlocked state.In the first embodiment, the outer recesses 221 of the outer bushes 22 of the numeral wheel units 20 are in an even row when the numeral wheel units 20 are rotated to the manager code. Thus, the insert member 41 can be inserted into the outer recesses 221, whereby the insert member 41 becomes slidable toward the number wheel units 20.As shown in FIGS. 3 and 7 to 9, the control of the output mechanism 60 with the latch 30 and the control of the output mechanism 60 with the operating member 50 are integrated so as to be performed together in the case where the output mechanism 60 is to be switched to the unlocked state. Preferably, the output mechanism 60 comprises a locking element 61 and the control of the output mechanism 60 with the latch 30 and the control of the output mechanism 60 with the actuating element 50 are integrated into the locking element 61. In the locked state, the locking element 61 is in engagement with a subsequent device in such a way that the subsequent device cannot be actuated for the purpose of unlocking. When the numeral wheel units 20 are turned to the user code and the latch 30 is slid, the latch 30 will cause the locking member 61 to slide. By the latch 30 causing the lock member 61 to slide, the output mechanism 60 is switched to the unlocked state (see FIGS. 7 and 8 ). When the numeral wheel units 20 are rotated to the manager code and the actuator 50 is slid or rotated by the user, the actuator 50 will cause the lock member 61 to slide. By the operation member 50 causing the lock member 61 to slide, the output mechanism 60 is switched to the unlocked state (see FIGS. 7 and 9 ).The direction in which the locking element 61 moves under the action of the latch 30 and the direction in which the locking element 61 moves under the action of the actuating element 50 may be the same. In the first embodiment, the direction in which the locking element 61 moves under the action of the latch 30 is not parallel to the direction in which the locking element 61 moves under the action of the actuating element 50. Preferably, these two displacement directions run perpendicular to one another.In particular, the output mechanism 60 further comprises a carrier 62 connected to and thus slidable with the latch 30. The locking member 61 is disposed on the carrier 62 so as to be slidable relative to the carrier 62. The direction in which the blocking element 61 is displaceable relative to the carrier 62 does not run parallel to the displacement direction of the latch 30. Furthermore, the blocking element 61 can optionally be pushed through the actuating element 50. In other words, the latch 30 pushes the carrier 62 such that the carrier 62 causes the locking member 61 to move (It can be seen that the latch 30 causes the carrier 62 and the locking member 61 to slide simultaneously.) At this time, the operating member 50 directly brings the locking member 61 to move (relative to the carrier 62). However, the latch 30 and the operating member 50 cause the locking member 61 to slide in different directions. Both the displacement of the ratchet 61 in one direction and the displacement of the ratchet 61 in the other direction may cause the output mechanism 60 to be switched to the unlocked state. The output mechanism 60 comprises a mechanism for fastening further objects or a mechanism for fastening the number lock according to the invention at a specific location. For example, the output mechanism 60 comprises latching hooks 64 of a laptop lock (see FIG. 1 ) in the first exemplary embodiment and catches 67 of a cabinet lock (see FIG. 13 ) in the second exemplary embodiment.As shown in FIGS. 2, 5, 6, 7 and 12, the output mechanism 60 in the first and second embodiments includes an output shaft 63 that is optionally locked by the locking member 61 so as to be non-rotatable.In the locked state, the locking element 61 is in engagement with the output shaft 63 in such a way that the output shaft 63 remains rotationally fixed (see FIG. 6 ).When the numeral wheel units 20 are turned to the user code, the latch 30 can be slid to separate from the output shaft 63. As a result, the locking element 61 releases the output shaft 63 so that the output shaft 63 becomes rotatable again. More specifically, an elastic member pushes the latch 30 toward the output shaft 63. When the numeral wheel units 20 are turned to the user code, the user can pull the latch so that the latch 30 moves away from the output shaft 63. Alternatively, the user may directly rotate the output shaft 63 to push the latch 30 away (see FIGS. 7 and 8 ).When the numeral wheel units 20 are rotated to the manager code and the operation member 50 is slid or rotated by the user, the operation member 50 slides the lock member 61, whereby the lock member 61 releases the output shaft 63 so that the output shaft 63 becomes rotatable again. More specifically, the locking member 61 shifts in the axial direction of the output shaft 63 so as to deviate axially from the location where the locking member 61 locks the output shaft 63 in the locked state, and thus does not lock the output shaft 63.It is conceivable to combine the output shaft 63 with various components to form locks of various kinds, and whether the numeral lock is locked or unlocked is determined from the rotation of the output shaft 63. When the output shaft 63 is rotatable, the numeral lock can be unlocked. When the output shaft 63 is not rotatable, the numeral lock is locked.As shown in FIGS. 2, 5, and 12, the output mechanism 60 in the first embodiment further includes two latch hooks 64 that can latch into an anti-theft slot of a portable electronic device and are connected to the output shaft 63. By rotating the output shaft 63, the two latching hooks 64 are caused to spread or contract. Preferably, in the unlocked state, the user rotates the output shaft 63 so that the output shaft 63 causes an expanding member 65 to rotate simultaneously. The expansion element 65 is screwed into a clamping element 66, so that the rotated expansion element 65 moves in the direction of the two latching hooks 64 in order to spread the two latching hooks 64.As shown in FIGS. 13 and 14, in a second embodiment, the output mechanism 60 includes a snap 67 disposed on the output shaft 63 such that the snap 67 extends in the radial direction of the output shaft 63. In the unlocked state, the user can rotate the output shaft 63 so that the snap 65 is made to rotate at various angles by rotating the output shaft 63. The number lock can thus be used as a cabinet lock in order to fasten a door leaf. Thus, the numeral lock in this embodiment can be used as a locker lock at shopping centers. In addition, the numeral lock in this embodiment can be used as a usual door lock. However, the kinds of locks to which the output shaft 63 is incorporated are not limited to the above two kinds, and the kind of output of the output mechanism 60 is not limited to the output shaft 63.In the first and second embodiments, the operating member 50 is a rotary knob, preferably a rotary knob, which is rotated with a tool such as a screwdriver. However, the embodiment of the operating member 50 is not limited thereto.In the third exemplary embodiment shown in FIGS. 15 to 20, the actuating element 50 likewise deals with a rotary knob, which is however arranged at a different location than in the first and second exemplary embodiments. In addition, the coupling mechanism 40 does not have a reversing / sliding element 42. The operating member 50 is rotated and then directly pushes the piercing member 41 toward the number wheel units 20 (see FIGS. 17 and 18 ). After the actuating element 50 is rotated, it will also push the latching element 61 (see FIGS. 19 and 20 ). Thus, the third embodiment can also achieve the same effects of the first embodiment.Further, the operating member 50 is not limited to the rotary knob in the aforementioned three embodiments. Alternatively, the operating member 50 may be operated by pushing or pushing. It is conceivable to design the actuating element 50 in such a manner that the actuating element 50 pushes the plug-through element 41 and the latching element 61 by means of an inclined surface after it is pressed or pushed.In the above-mentioned three embodiments, the first embodiment of the paylock according to the invention is shown, wherein the latch 30 and the actuating element 50 are both connected to the output mechanism 60. The second embodiment of the invention is different from the first embodiment in that the operating member 50 is connected to one of the numeral wheel units 20 and releases the numeral wheel unit 20 upon unlocking so that the latch 30 can cause the numeral wheel unit 20 to slide simultaneously to switch the output mechanism 60 to the unlocked state.In the fourth exemplary embodiment illustrated in FIGS. 21 to 23, the actuating element 50 preferably comprises an actuating part 51 and a supporting part 52, wherein the supporting part 52 is supported on the inner bushing 21 of the number wheel unit 20 at the one end in such a way that the inner bushing 21 of the number wheel unit 20 is not displaceable and at the same time prevents displacement of the inner bushing 21 of the adjacent number wheel unit 20. As a result, the inner sleeves 21 of all the number wheel units 20 cannot shift.When the numeral wheel units 20 are rotated to the manager code, the numeral wheel units 20 (the outer sleeves 22) allow the link mechanism 40 (the plug-through member 41) to be slid or rotated relative to the numeral wheel units 20 so that the operation member 50 (the operation member 51) can be slid or rotated by the user. When the operation part 51 of the operation member 50 is slid or rotated, the operation part 51 makes the support part 52 to disengage from the inner sleeve 21 of the numeral gear unit 20 at the one end, so that the inner sleeves 21 of all the numeral gear units 20 become slidable. Since the inner bushes 21 are now slidable, all the inner bushes 21 can be directly caused to jointly slide the latch 30 (see FIG. 23 ), even if all the inner bushes 21 are not rotated to the angle corresponding to the latch 30 and the latch 30 is therefore not slidable relative to the inner bushes 21. Regardless of whether the numeral wheel units 20 are rotated to the user code and the latch 30 can thereby disengage and translate from all of the inner sockets 21 (see FIG. 22 ), or whether the numeral wheel units 20 are rotated to the manager code and the latch 30 can thereby cause all of the inner sockets 21 to translate simultaneously (see FIG. 22 ), the latch 30 will ultimately translate, with the output mechanism 60 being switched to the unlocked state by the translation of the latch 30.Now the locking element 61 can be arranged at one end of the latch 30. When the latch moves away from the output shaft 63, the output shaft 63 is no longer locked and can thus be rotated by the user.When the output mechanism 60 is connected to one end of the latch 30 and bent in a U-shape, the numeral lock can be used as a padlock.It is conceivable to combine the latch 30 with different components to form locks of different types, whereby it is determined from the displaceability of the latch 30 whether the number lock is locked or unlocked. If the latch 30 is displaceable, the number lock can be unlocked. If the latch 30 is not displaceable, the number lock is locked.In summary, the user typically uses the user code to unlock the number lock. When all the dial units 20 are rotated to the user code, the latch 30 may be slid relative to the dial units 20 to switch the output mechanism 60 to the unlocked state. Thus, the subsequent derailment step (e.g., rotating the output shaft 63) may be performed.When the user forgets their user code, he may turn to the manager (e.g., the paylock manufacturer or the shopping center manager) to request the manager code. Once all of the dial units 20 have been turned to the manager code, the user may actuate the actuator 50 (e.g., pull the actuator 50 with a screwdriver). In this manner, the output mechanism 60 can also be switched to the unlocked state to perform the subsequent unlocking step (e.g., rotating the output shaft 63 or pulling out the U-shaped output mechanism 60).The number lock according to the invention is characterized in that the number lock can be unlocked in two modes with two different codes, so that the number lock can be unlocked with the other code when the user forgets his user code.Furthermore, it is conceivable to identify an identification code on the housing 10. The manufacturer can use the identification code to set a separate manager code for each number lock so that not all number locks of the manufacturer have the same manager code. To request the manager code, the user must notify the manager of the identification code of the number lock to obtain the manager code assigned to his number lock. Thus, the protection of the number lock against an authorized opening is increased.Although the present invention has been described in detail on the basis of exemplary embodiments, it is obvious to a person skilled in the art that the invention is not limited to these exemplary embodiments, but rather that modifications are possible in such a way that individual features can be omitted or different combinations of features can be realized without exceeding the scope of protection of the appended claims. The disclosure of the present invention includes all combinations of the individual features presented.List of reference characters10 Housing 20 Number wheel unit 21 Inner bushing 211 Inner recess 22 Outer bushing 221 Outer recess 23 Number wheel 30 Latch 31 Projection 40 Coupling mechanism 41 Push-through element 42 Reversing / sliding element 50 Actuating element 51 Actuating part 52 Supporting part 60 Output mechanism 61 Locking element 62 Carrier 63 Output shaft 64 Locking hook 65 Expanding element 66 Sleeve element 67 Snap fastener

Claims

A dial lock having two modes of unlocking, comprising: - a housing (10); - a plurality of dial units (20) rotatably supported in the housing (10) and capable of being rotated by the user; - a latch (30) slidably disposed in the housing (10) and inserted through the dial units (20); - a link mechanism (40) slidably or rotatably supported in the housing (10) and connected to the dial units (20); - an actuator (50) operable by the user and connected to the link mechanism (40); and - an output mechanism (60) connected to the latch (30) and the actuator (50) and having an unlocked state and a locked state; characterized in that the numeral wheel units (20) permit displacement of the latch (30) relative to the numeral wheel units (20) when rotated to a user code, so that the output mechanism (60) is switchable to the unlocked state under these circumstances; and that the user is permitted displacement or rotation of the operating member (50) when the numeral wheel units (20) are rotated to a manager code, wherein the coupling mechanism (40) can be made to displace or rotate relative to the numeral wheel units (20) by the operating member (50), so that the output mechanism (60) is switchable to the unlocked state.The numeral lock according to claim 1, characterized in that the respective numeral wheel unit (20) comprises an inner bushing (21), an outer bushing (22) and a numeral wheel (23), the inner bushing (21) being inserted into the outer bushing (22) and the outer bushing (22) being inserted into the numeral wheel (23), the numeral wheel (23) causing the outer bushing (22) and the inner bushing (21) to rotate simultaneously, the inner bushing (21) being provided with an inner recess (211) corresponding to the latch (30), the outer bushing (22) being provided with an outer recess (221) corresponding to the coupling mechanism (40).The numeral lock according to claim 2, characterized in that the inner recesses (211) of the inner bushes (21) of the numeral wheel units (20) are in an even row when the numeral wheel units (20) are turned to the user code; and that the outer recesses (221) of the outer bushes (22) of the numeral wheel units (20) are in an even row when the numeral wheel units (20) are turned to the manager code.The number lock according to claim 2, characterized in that the outer recess (221) of the outer sleeve (22) is disposed radially recessed on the outer wall surface of the outer sleeve (22).The number lock according to any one of the preceding claims, characterized in that the output mechanism (60) comprises a locking element (61), wherein the latch (30) then moves the locking element (61) to the unlocked state to switch the output mechanism (60) to the unlocked state when the number wheel units (20) are rotated to the user code and the latch (30) moves, wherein the operating element (50) then moves the locking element (61) to the slide to switch the output mechanism (60) to the unlocked state when the number wheel units (20) are rotated to the manager code and the operating element (50) is moved or rotated by the user.A number lock according to claim 5, characterized in that the direction in which the locking element (61) moves under the action of the latch (30) is not parallel to the direction in which the locking element (61) moves under the action of the actuating element (50).The number lock according to claim 6, characterized in that the output mechanism (60) comprises a carrier (62) connected to and slidable with the latch (30), the locking element (61) being arranged on the carrier (62) so as to be slidable relative to the carrier (62), the direction in which the locking element (61) is slidable relative to the carrier (62) being non-parallel to the direction of displacement of the latch (30), the locking element (61) optionally being slidable by the operating element (50); that when the number wheel units (20) are rotated to the user code and the latch (30) is caused to slide, the latch (30) causes the carrier (62) and the locking element (61) to slide simultaneously, so that the output mechanism (60) is switched to the unlocked state; and that when the dial units (20) are turned to the manager code and the actuator (50) is slid or turned by the user, the actuator (50) makes the lock member (61) slide relative to the carrier (62), so that the output mechanism (60) is switched to the unlocked state.The numeral lock according to claim 5, characterized in that the output mechanism (60) comprises an output shaft (63) optionally locked by the locking member (61) so as to become non-rotatable; that when the numeral wheel units (20) are rotated to the user code, the latch (30) can be slid so as to separate from the output shaft (63), whereby the locking member (61) releases the output shaft (63) so that the output shaft (63) becomes rotatable again; and that when the numeral wheel units (20) are rotated to the manager code and the operating member (50) is slid or rotated by the user, the operating member (50) causes the locking member (61) to slide, whereby the locking member (61) releases the output shaft (63) so that the output shaft (63) becomes rotatable again.The number lock according to claim 8, characterized in that the output mechanism (60) comprises two latching hooks (64) which can latch into an anti-theft slot of a portable electronic device and are connected to the output shaft (63), wherein the two latching hooks (64) can be caused to spread or contract by rotating the output shaft (63).The paylock according to claim 8, characterized in that the output mechanism (60) comprises a snap (67) disposed on the output shaft (63) such that snap (67) extends in the radial direction of the output shaft (63), the snap (65) being capable of rotating at different angles by the rotation of the output shaft (63).A number lock according to claim 8, characterised in that an identification code is provided on the housing (10).A dial lock having two modes of unlocking, comprising: - a housing (10); - a plurality of dial units (20) rotatably supported in the housing (10) and capable of being rotated by the user; - a latch (30) slidably disposed in the housing (10) and inserted through the dial units (20); - a link mechanism (40) slidably or rotatably disposed in the housing (10) and connected to the dial units (20); - an actuator (50) operable by the user and connected to the link mechanism (40) and one of the dial units (20); and an output mechanism (60) connected to the latch (30) and having an unlocked state and a locked state; characterized in that the number wheel units (20) then permit displacement of the latch (30) relative to the number wheel units (20) when rotated to a user code, so that the output mechanism (60) is switchable to the unlocked state under these circumstances; Allowing the user to slide or rotate the actuator (50) when the numeral wheel units (20) are rotated to a manager code, wherein the linkage mechanism (40) can be made to slide or rotate relative to the numeral wheel units (20) by the actuator (50) to allow simultaneous displacement of the numeral wheel units (20) and the latch (30) to make the output mechanism (60) switchable to the unlocked state.A numeral lock according to claim 12, characterized in that the respective numeral wheel unit (20) comprises an inner bushing (21), an outer bushing (22) and a numeral wheel (23), the inner bushing (21) being inserted into the outer bushing (22) and the outer bushing (22) being inserted into the numeral wheel (23), the numeral wheel (23) causing the outer bushing (22) and the inner bushing (21) to rotate simultaneously, the inner bushing (21) being provided with an inner recess (211) corresponding to the latch (30), the actuating element (50) resting on the inner bushing (21) of the one numeral wheel unit (20); and that when the dial units (20) are turned to the manager code and the actuator (50) is slid or turned by the user, the actuator (50) disengages from the inner sleeve (21) of the dial unit (20) so that the latch (30) and the inner sleeves (21) of the dial units (20) can all be slid simultaneously.A numeral lock according to claim 12 or 13, characterized in that the output mechanism (60) is connected to one end of the latch (30) and bent in a U-shape.

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