A mechanical password lock with password retrieval capability

Abstract

A mechanical password lock with a retrievable password comprises a key lock core and a password lock core accommodated in a lock body, the password lock core comprises a plurality of password dials and an alignment ring driven to rotate by the password dials, the outer peripheral surface of the alignment ring is provided with an indication mark, the lock body is provided with an observation window, when the alignment ring is rotated to an unlocking position, the observation window corresponds to the position of the indication mark, a covering part for covering the observation window is movably connected to the lock body, and the key lock core is inserted with a corresponding mechanical key to drive the covering part to move from a covering position covering the observation window to an observation position exposing the observation window.

Description

Technical Field

[0001] The invention relates to the field of locks, in particular to a mechanical password lock with a password that can be retrieved. Background Art

[0002] For example, the combination lock in the prior art with application numbers CN201620192162.4, CN200320121949.4, and CN200910260645.8 comprises a lock shell and a combination lock core, which is arranged inside the lock shell and has a lock bolt, multiple lock sleeves and multiple combination dials, the lock sleeves are sleeved outside the lock bolt, and the combination dials are respectively sleeved outside the lock sleeves and can drive the corresponding lock sleeves to rotate together.

[0003] When the combination lock is in a locked state, the lock bolt will abut against the bottom of the lock buckle sleeve that has not been rotated to the correct angle, so that the lock bolt cannot be pulled out upward to achieve the purpose of locking; and after the user turns the combination dial and successively drives the lock buckle sleeve to rotate to the correct unlocking position, the combination lock is in an unlocked state. In the unlocked state, the notches of all the lock buckle sleeves will be aligned in a straight line and aligned with the corresponding protrusions on the lock bolt, so that the user can pull the lock bolt upward through the notches of the lock buckle sleeves to achieve the purpose of unlocking.

[0004] However, the above-mentioned combination lock does not provide a mechanism for the user to find the correct password. In other words, when the user forgets the password set previously, he must test the passwords one by one or directly destroy the combination lock.

[0005] In order to address the shortcomings of the above-mentioned combination locks, some industry insiders have invented a combination lock with a confirmation hole. A plurality of test holes are opened in the lock shell corresponding to the lock sleeve. The test holes can be used by the user to confirm and test the condition of the lock sleeve and then retrieve the correct password. The method is that the user observes with the naked eye or uses a test pin. While turning the combination dial, the test pin is inserted. When the password is correct, the test pin will pass through the test hole through the password alignment groove, or the user can use the eyes to identify whether the missing groove of the lock sleeve is turned to the correct unlocking position while turning. However, the above two methods require time and effort to retrieve the password during the testing process, so it is actually very inconvenient.

[0006] The Chinese invention patent with application number 201720102791.8 discloses a password lock, and specifically discloses a password lock core (password lock core) arranged in a long groove (password lock core cavity), and includes multiple password alignment rings (alignment rings), multiple password dials, multiple springs, a third elastic component and a gasket. The password alignment ring further includes an inner ring flange and multiple outer protrusions, the inner ring flange is arranged around the inner wall surface of the password alignment ring, and the outer protrusions protrude from the outer wall surface of the password alignment ring; each of the password dials further includes multiple inner grooves, the inner grooves are horizontally arranged around each other on the inner wall surface of the password dial, and the outer protrusions are selectively engaged in the inner grooves.

[0007] The patent also discloses a code-finding component, which is arranged in the middle of the long hole and the long groove, and includes a code-finding push piece, which is uprightly arranged in the lock shell, connected to the upper push seat, and moves up and down with the upper push seat, and the code-finding push piece is recessed with a plurality of linkage parts, which are arranged on a side of the code-finding push piece, and the positions of the linkage parts correspond to the positions of the channels, respectively, and each of the linkage parts includes a low part, a high part and an inclined part; a plurality of push rods, which are respectively movably arranged in the channels of the lock shell, and the push rods are arranged at intervals from each other up and down and horizontally penetrate the code-finding push piece, and respectively correspond to the linkage parts. The locking member is a movable part, and corresponds to the password alignment rings respectively, each of the push rods includes a head and a rod connected to each other, one end of the head rests on the linkage part, the rod passes through the linkage part and is selectively inserted into the corresponding password alignment groove; a plurality of first elastic components are respectively arranged between the push rods and the inner wall surface of the lock shell, and respectively push the push rods toward the password alignment rings; wherein, when the lock core part of the key lock core (key lock core) is unlocked, the lower push seat causes the upper push seat and the code-finding push piece to move downward, so that the head of each push rod moves from resting on the high part to resting on the low part, so that the push rod rests on the corresponding password alignment ring.

[0008] The structure of the password-recoverable password lock in the prior art is complex. Summary of the invention

[0009] The object of the present invention is to provide a mechanical password lock with a simple structure and capable of retrieving passwords.

[0010] To achieve the above-mentioned purpose, the present invention provides a mechanical password lock with a retrievable password, comprising a key lock core and a password lock core accommodated in a lock body, the password lock core comprising a plurality of password dials and an alignment ring driven to rotate by the password dials, the alignment ring having an indicator mark on its outer circumferential surface, the lock body having an observation window, when the alignment ring is rotated to an unlocking position, the observation window corresponds to the position of the indicator mark, a covering portion for covering the observation window is movably connected to the lock body, the key lock core being inserted with a corresponding mechanical key to drive the covering portion to move from a covering position covering the observation window to an observation position exposing the observation window.

[0011] In one embodiment of the present invention, a locking assembly is further provided in the lock body, and the locking assembly is used to lock the lock beam or the zipper.

[0012] In one embodiment of the present invention, a first compression spring is provided between the covering portion and the lock body for maintaining the covering portion and the lock body in a covering position.

[0013] In one embodiment of the present invention, the locking assembly is used to lock the lock beam, and the locking assembly includes a lock tongue slidably connected to the lock body and a blocking plate rotatably connected to the lock body. The lock tongue can be moved from an engaged position that engages with the lock beam to an unlocked position that disengages from the lock beam, and a second compression spring is provided between the lock tongue and the lock body for keeping the lock tongue in the engaged position. The blocking plate is provided with an alignment protrusion corresponding to the alignment notch of each alignment ring, and when all the alignment rings are rotated to the unlocking position, the alignment notch corresponds to the position of all the alignment protrusions; a third compression spring is provided between the blocking plate and the lock body for keeping the alignment protrusion of the blocking plate pressing the alignment ring; when at least one of the alignment notch and the alignment protrusion position do not correspond, the blocking plate is in the blocking position, and the key lock core can be driven to rotate to the second unblocked position by rotating after the corresponding mechanical key is inserted into the key lock core, and when the blocking plate is in the first unblocked position or the second unblocked position, the lock tongue can move from the engaged position to the unlocked position.

[0014] In one embodiment of the present invention, the lock body is slidably connected to a button for driving the lock tongue to move from the engaged position to the unlocked position, the button is provided with a wedge block that cooperates with the lock tongue, and the lock tongue is provided with an inclined surface that cooperates with the wedge block.

[0015] In one embodiment of the present invention, a movable plate is slidably connected to the lock body, and the movable plate cooperates with the dial head of the key lock cylinder. The movable plate can move from a disengaged position to a squeeze position to squeeze the blocking plate to move to a second unblocked position.

[0016] In one embodiment of the present invention, the movable plate is provided with a driving column extending toward the covering portion, and the covering portion is provided with an extrusion surface cooperating with the driving column. When the movable plate moves from the disengaged position to the extrusion position, the driving column squeezes the covering portion from the covering position toward the observation window to the observation position.

[0017] In one embodiment of the present invention, the combination lock core also includes a core shaft, a reset ring sleeved outside the core shaft, an operating rod connected to the reset ring and a limit rod, the operating rod passes through the lock body, all the combination dials and all the alignment rings are sleeved outside the core shaft, the lock body limits the axial movement of the combination dial, the combination dial is provided with a connecting protrusion or a connecting recess axially connected to the alignment ring, the alignment ring is provided with a matching recess or a matching protrusion that matches the connecting protrusion or the connecting recess, when the blocking plate is in the blocking position, the limit rod corresponds to the position of the blocking plate, all the alignment rings are in the connecting position, the connecting protrusion and the matching recess or the connecting recess and the matching protrusion match, one end of the core shaft facing away from the reset ring is sleeved with the fourth compression spring located between the alignment ring and the lock body for keeping all the alignment rings in the connecting position, when the blocking lever is in the first unobstructed position or the second unobstructed position, the user can control the reset ring through the operating rod to make the connecting protrusion disengage from the matching recess or the connecting recess disengage from the matching protrusion.

[0018] In one embodiment of the present invention, the key lock cylinder is rotationally connected to the button, and the button is a lock cylinder shell of the key lock cylinder.

[0019] In one embodiment of the present invention, the moving direction of the movable plate and the lock tongue is perpendicular to the rotation axis of the key lock core; the blocking plate is pivotally connected to the lock body, and the rotation axis of the blocking plate, the rotation axis of the alignment ring, the rotation axis of the alignment ring, and the rotation axis of the password dial are perpendicular to the rotation axis of the key lock core.

[0020] In the present invention, an indicator mark is provided on the outer circumference of the alignment ring, and the lock body is provided with an observation window. When the alignment ring is rotated to the unlocking position, the observation window corresponds to the position of the indicator mark. A covering part for covering the observation window is movably connected in the lock body, and the key lock cylinder is inserted with a corresponding mechanical key to drive the covering part to move from the covering position covering the observation window to the observation position exposing the observation window. When the user uses the key to unlock the lock, the position of the alignment ring can be checked through the observation window insertion hole, which is convenient for the user to retrieve the password. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of a mechanical combination lock with a recoverable password according to the first embodiment of the present invention.

[0022] Figure 2 for Figure 1 A schematic diagram of the structure of a hidden lock beam of a mechanical combination lock with a recoverable password.

[0023] Figure 3 for Figure 2 Exploded view of a mechanical combination lock with a recoverable combination.

[0024] Figure 4 for Figure 3 A partial enlarged view of position A of a mechanical combination lock with a recoverable password.

[0025] Figure 5 for Figure 3 Exploded view of the combination lock cylinder.

[0026] Figure 6 for Figure 2 A cross-sectional view of the alignment ring of a mechanical combination lock with a recoverable combination.

[0027] Figure 7 for Figure 2 A cross-sectional view of a combination dial of a mechanical combination lock with a recoverable combination.

[0028] Figure 8 for Figure 2 Structural diagram of the hidden lock beam and lock body of a mechanical combination lock with a recoverable password.

[0029] Fig. 9 for Figure 4 Schematic diagram of the structure of the movable plate and the covering part.

[0030] Fig.10 FIG. 1 is a schematic structural diagram of a password-recoverable mechanical combination lock according to a second embodiment of the present invention.

[0031] Fig.11 for Fig.10 A schematic diagram of the structure in which the covering part is in a covering state. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-4 The mechanical password lock with a recoverable password according to the first embodiment of the present invention comprises a key lock cylinder 1 and a password lock cylinder 2 accommodated in a lock body 3, a locking assembly, a covering portion 5, a movable plate 6, and a positioning plate 7.

[0034] The key lock cylinder 1 is rotatably connected to a button 11 , and the button 11 is a lock cylinder shell of the key lock cylinder 1 .

[0035] See also Figure 5-7 The combination lock cylinder 2 includes a plurality of combination dials 21 and an alignment ring 22 driven to rotate by the combination dials 21. The outer peripheral surface of the alignment ring 22 is provided with an indication mark 221. When the alignment ring 22 rotates to the unlocking position, the observation window 31 corresponds to the position of the indication mark 221. A covering part 5 for covering the observation window 31 is movably connected in the lock body 3. The key lock cylinder 1 is inserted with a corresponding mechanical key to drive the covering part 5 to move from the covering position covering the observation window 31 to the observation position exposing the observation window 31. The observation window 31 is filled with glass or transparent plastic.

[0036] The combination lock core 2 also includes a core shaft 23, a reset ring 24 sleeved outside the core shaft 23, an operating rod 241 connected to the reset ring 24, and a limit rod 242, the operating rod 241 passes through the lock body 3, all the combination dials 21 and all the alignment rings 22 are sleeved outside the core shaft 23, the lock body 3 limits the axial movement of the combination dial 21, the combination dial 21 is provided with a connecting protrusion or a connecting recess 21a axially connected to the alignment ring 22, the alignment ring 22 is provided with a matching recess or a matching protrusion 22a matching with the connecting protrusion or the connecting recess 21a, and the blocking plate 42 is in the blocking position for a time limit. The position of the positioning rod 242 corresponds to that of the blocking plate 42. All the alignment rings 22 are in the connection position. The connection protrusion and the matching depression or the connection depression 21a and the matching protrusion 22a are matched. The end of the core shaft 23 facing away from the reset ring 24 is sleeved with a fourth compression spring 2t located between the alignment ring 22 and the lock body 3 for keeping all the alignment rings 22 in the connection position. When the blocking plate is in the first unblocked position or the second unblocked position, the user can control the reset ring 24 through the operating rod 241 to make the connection protrusion disengage from the matching depression or the connection depression 21a disengage from the matching protrusion 22a. There are multiple positioning depressions 210 on the outer circumference of the code dial 21, and the positioning plate 7 is provided with multiple elastic protrusions 71. The two sides of the code lock core 2 are provided with limit parts 26 connected and fixed to the lock body 3, and the limit parts 26 limit the axial movement range of the alignment ring 22.

[0037] The lock body 3 is provided with an observation window 31 and a password window 32 corresponding to the password dial 21 . The password window 32 limits the axial movement of the password dial 21 .

[0038] See also Figure 8 , 9The locking assembly is used to lock the lock beam 10. The locking assembly includes a lock tongue 41 slidably connected to the lock body 3 and a blocking plate 42 rotatably connected to the lock body 3. The lock tongue 41 can move from a biting position of the lock beam 10 to an unlocking position of the lock beam 10. A second compression spring 41t is provided between the lock tongue 41 and the lock body 3 to keep the lock tongue 41 in the biting position. The blocking plate 42 is provided with an alignment protrusion 421 corresponding to the alignment notch 222 of each alignment ring 22. When all the alignment rings 22 are rotated to the unlocking position, the alignment notch 222 and all the alignment rings 22 are aligned. The position of the alignment protrusion 421 of the blocking plate 42 corresponds to that of the alignment protrusion 421 of the locking body 3; a third compression spring 42t is provided between the blocking plate 42 and the lock body 3 for keeping the alignment protrusion 421 of the blocking plate 42 pressing the alignment ring 22; when at least one alignment notch 222 does not correspond to the position of the alignment protrusion 421, the blocking plate 42 is in the blocking position, and the key lock cylinder 1 can drive the blocking plate 42 to rotate to the second unblocked position after the corresponding mechanical key is inserted into the key lock cylinder 1. When the blocking plate 42 is in the first unblocked position or the second unblocked position, the lock tongue 41 can move from the bite position to the unlocked position. The lock body 3 is slidably connected with a button 11 for driving the lock tongue 41 to move from the bite position to the unlocked position. The button 11 is provided with a wedge block 111 that cooperates with the lock tongue 41, and the lock tongue 41 is provided with an inclined surface 410 that cooperates with the wedge block 111, and an avoidance groove 412 corresponding to the blocking plate 42 in the first unblocked position. In other embodiments, the locking assembly is used to lock the lock beam 10 or the zipper. The locking assembly can also use a steel ball or a rotating lock tongue.

[0039] A first compression spring 5t is provided between the cover 5 and the lock body 3 for keeping the cover 5 and the lock body 3 in the covering position. The cover 5 is provided with a plurality of observation holes 51 cooperating with the observation window. The cover 5 is movably connected to the lock body, and the cover 5 can also be hinged to the lock body 3.

[0040] The movable plate 6 is slidably connected to the lock body 3, and the movable plate 6 cooperates with the dial head 12 of the key lock cylinder 1. The movable plate 6 is provided with a matching block 601 that cooperates with the dial head 12. The movable plate 6 can move from the disengaged position to the squeezing position where the blocking plate 42 moves to the second unblocked position. The movable plate 6 is provided with a squeezing arm 62 that squeezes the blocking plate 5, and the movable plate 6 can be reset under the elastic force of the first compression spring 5t. The movable plate 6 is provided with a driving column 61 extending toward the covering part 5, and the covering part 5 is provided with a squeezing surface 50 that cooperates with the driving column, and the squeezing surface 50 is an inclined surface. When the movable plate 6 moves from the disengaged position to the squeezing position, the driving column 61 squeezes the covering part 5 to move from the covering position to the observation position.

[0041] The moving direction of the movable plate 6 and the lock tongue 41 is perpendicular to the rotation axis of the key lock cylinder 1; the blocking plate 42 is pivotally connected to the lock body 3, and the rotation axis of the blocking plate 42, the rotation axis of the alignment ring 22, the rotation axis of the alignment ring 22, and the rotation axis of the code dial 21 are perpendicular to the rotation axis of the key lock cylinder 1.

[0042] See also Figure 10-11 The covering part 5 is provided with a matching part 63, and the covering part 5 is slidably connected with the lock body 3 in the lock body. The dial head 12 of the lock core 1 can directly squeeze the covering part 5 to move from the observation position to the covering position, and can also squeeze the matching part 63 to move from the covering position to the observation position.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mechanical password lock with a retrievable password, comprising a key lock cylinder and a password lock cylinder contained in a lock body, the password lock cylinder comprising a plurality of password dials and an alignment ring driven to rotate by the password dials, characterized in that: The outer peripheral surface of the alignment ring is provided with an indicator mark, and the lock body is provided with an observation window. When the alignment ring is rotated to the unlocking position, the observation window corresponds to the position of the indicator mark. A covering part for covering the observation window is movably connected in the lock body, and the key lock core is inserted with a corresponding mechanical key to drive the covering part to move from the covering position covering the observation window to the observation position exposing the observation window.

2. The mechanical password lock with a recoverable password according to claim 1, characterized in that: The lock body is also provided with a locking assembly, which is used to lock the lock beam or the zipper.

3. The mechanical combination lock with a recoverable password according to claim 2, characterized in that: A first compression spring is provided between the covering portion and the lock body for keeping the covering portion and the lock body in a covering position.

4. The mechanical combination lock with a recoverable password according to claim 3, characterized in that: The locking assembly is used to lock the lock beam. The locking assembly includes a lock tongue slidably connected to the lock body and a blocking plate rotatably connected to the lock body. The lock tongue can be moved from an engaged position that engages with the lock beam to an unlocked position that disengages from the lock beam. A second compression spring is provided between the lock tongue and the lock body for keeping the lock tongue in the engaged position. The blocking plate is provided with an alignment protrusion corresponding to the alignment notch of each alignment ring. When all the alignment rings are rotated to the unlocking position, the alignment notch corresponds to the position of all the alignment protrusions; a third compression spring is provided between the blocking plate and the lock body for keeping the alignment protrusion of the blocking plate pressing the alignment ring; when at least one of the alignment notch does not correspond to the alignment protrusion position, the blocking plate is in the blocking position, and the key lock core can be driven to rotate to the second unblocked position by rotating after the corresponding mechanical key is inserted into the key lock core. When the blocking plate is in the first unblocked position or the second unblocked position, the lock tongue can move from the engaged position to the unlocked position.

5. The mechanical combination lock with a recoverable password according to claim 4, characterized in that: The lock body is slidably connected with a button for driving the lock tongue to move from the engaged position to the unlocked position. The button is provided with a wedge block that cooperates with the lock tongue, and the lock tongue is provided with an inclined surface that cooperates with the wedge block.

6. The mechanical combination lock with a recoverable password according to claim 5, characterized in that: A movable plate is slidably connected to the lock body, and the movable plate cooperates with the dial head of the key lock cylinder. The movable plate can move from a disengaged position to a squeeze position for squeezing the blocking plate to move to a second unblocked position.

7. The mechanical combination lock with a recoverable password according to claim 6, characterized in that: The movable plate is provided with a driving column extending toward the covering portion, and the covering portion is provided with an extrusion surface cooperating with the driving column. When the movable plate moves from the disengaged position to the extrusion position, the driving column squeezes the covering portion from the covering position toward the observation window to the observation position.

8. The mechanical combination lock with a recoverable password according to claim 7, characterized in that: The password lock core also includes a core shaft, a reset ring sleeved outside the core shaft, an operating rod connected to the reset ring and a limit rod, the operating rod passes through the lock body, all the password dials and all the alignment rings are sleeved outside the core shaft, the lock body limits the axial movement of the password dial, the password dial is provided with a connecting protrusion or a connecting depression axially connected to the alignment ring, the alignment ring is provided with a matching depression or a matching protrusion that matches with the connecting protrusion or the connecting depression, when the blocking plate is in the blocking position, the limit rod corresponds to the position of the blocking plate, all the alignment rings are in the connecting position, the connecting protrusion and the matching depression or the connecting depression and the matching protrusion match, one end of the core shaft facing away from the reset ring is sleeved with a fourth compression spring located between the alignment ring and the lock body for keeping all the alignment rings in the connecting position, when the blocking office is in the first unblocked position or the second unblocked position, the user can control the reset ring through the operating rod to make the connecting protrusion disengage from the matching depression or the connecting depression disengage from the matching protrusion.

9. The mechanical combination lock with a recoverable password according to claim 8, characterized in that: The key lock core is rotatably connected to the button, and the button is a lock core shell of the key lock core.

10. The mechanical combination lock with a recoverable password according to claim 9, characterized in that: The moving direction of the movable plate and the lock tongue is perpendicular to the rotation axis of the key lock core; the blocking plate is pivotally connected to the lock body, and the rotation axes of the blocking plate, the alignment ring, the alignment ring, and the password dial are perpendicular to the rotation axis of the key lock core.

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