Automatic password recovery combination lock

Abstract

This invention discloses an automatic password recovery dial lock, which can quickly recover the password without rotating the dial. The dial lock includes a password component, a control component, a latching component, a code-finding component, a first linkage component, and a second linkage component. The password component includes a fixed base, a dial rotatably mounted in the fixed base, and a bushing that moves in conjunction with the dial. The latching component is slidably fitted on one side of the password component and has a pawl that prevents the dial from rotating freely in the initial state. The code-finding component is movably fitted on the other side of the password component and has a code-finding arm that acts on the bushing. When the code-finding arm acts on the bushing, it causes the bushing to be stressed, which drives the dial to rotate to the password position. The first linkage component and the second linkage component are both slidably fitted on the bottom of the fixed base and are linked with the latching component and the code-finding component, respectively. The control component is located inside the dial lock opposite to the fixed base and moves relative to the fixed base through user operation, while also being linked with the first and second linkage components.

Description

Technical Field

[0001] This invention belongs to the field of combination lock technology, and specifically refers to a combination lock with automatic password recovery. Background Technology

[0002] Combination locks, especially key combination locks, are a common type of lock in work and daily life, and their use is very widespread.

[0003] Referring to the applicant's relevant patents CN212897978U, CN212897978U, CN214576332U, etc., the relevant structure and basic working principle of the pinwheel combination lock can be understood. The combination component is the core module of the pinwheel combination lock. The state and linkage between its pinwheel, bushing, movable shaft, retainer, and other components determine the current state of the pinwheel combination lock: when the pinwheel and bushing are engaged, they rotate synchronously, and the user can input the password by moving the pinwheel; when the password is correct, the unlocking boss of the movable shaft aligns with the unlocking groove of the bushing, and the movable shaft can be pushed without restricting the movement of the bolt, allowing the lock to unlock; when the retainer is pushed and separates the pinwheel from the bushing, the user can no longer rotate the bushing when moving the pinwheel, at which point the lock's password can be changed. Furthermore, in conjunction with other structural designs, functions such as "password search" can also be implemented.

[0004] In existing technology, the main method for finding the code is to insert the emergency key into the lock cylinder and turn it. This triggers a code-finding mechanism linked to the lock cylinder. This mechanism has hooks that engage with grooves in the bushings. The user rotates the pins, causing the bushings and pins to rotate synchronously until the hooks engage with the grooves, creating resistance and indicating that the code corresponding to that pin has been found. Clearly, finding the code requires the user to rotate each pin individually, which is a rather cumbersome process. Summary of the Invention

[0005] The main objective of this invention is to provide an automatic password recovery combination lock, which solves the problems existing in the prior art. It can quickly recover the password set by the user, and the user no longer needs to turn the dials one by one, making the operation simpler.

[0006] To achieve the above objectives, the solution of the present invention is:

[0007] An automatic combination lock with a digit wheel for retrieving the correct combination includes a combination component, a control component, a latching component, a code-finding component, a first linkage component, and a second linkage component. The combination component includes a fixed base, a plurality of digit wheels rotatably mounted within the fixed base, and bushings that movably engage with the digit wheels. The latching component slidably engages with one side of the combination component and is provided with a pawl that initially prevents the digit wheels from rotating freely. The code-finding component movably engages with the other side of the combination component and is provided with a code-finding arm that acts on the bushing. When the code-finding arm acts on the bushing, it causes the bushing to... The rotation causes the dial to rotate to the password position; the first and second linkage components are slidably engaged with the bottom of the fixed base and are respectively linked with the latch and the code-finding component; the control component is disposed opposite to the fixed base inside the dial combination lock and moves relative to the fixed base through user operation, while also being linked with the first and second linkage components; the relative movement process of the control component has at least two states: the latch disengages from the dial and the code-finding arm acts on the bushing; the latch contacts the dial and the code-finding arm acts on the bushing.

[0008] The control component has a first cam surface on its circumferential surface and an arc-shaped groove formed on its upper surface. The side of the arc-shaped groove opposite to the first cam surface is a second cam surface, and the other side is a third cam surface. The two ends of the first linkage component movably abut against the first cam surface and the latching component, respectively. The second linkage component has a first protrusion that movably fits in the arc-shaped groove. The first protrusion is pushed by the second cam surface or the third cam surface as the control component rotates.

[0009] Preferably, the combination lock further includes a movable block and a movable spring; the first cam surface comprises a straight wall, a curved wall, and a grooved wall connected in sequence, with a break between the grooved wall and the curved wall; the movable block is elastically mounted on the end face of the first linkage member that contacts the first cam surface via the movable spring; initially, the straight wall is parallel to the movable block; when the control member rotates, its curved wall pushes the movable block to drive the first linkage member; when the control member rotates to its maximum angle, the movable block resets and engages with the grooved wall under the elastic force of the movable spring, and the grooved wall provides clearance space for the first linkage member to reset; when the control member rotates back, it pushes the movable block to compress the movable spring.

[0010] Preferably, the movable block is provided with a second protrusion that movably engages with the surface of the first cam.

[0011] Preferably, the control component is installed at the tail of the lock cylinder of the combination lock via a key connection and rotates synchronously with the lock cylinder.

[0012] The code-finding component includes a rotating shaft that is rotatably fitted within the fixed base, and the code-finding support arm is integrally connected to the circumferential surface of the rotating shaft.

[0013] Preferably, the second linkage member is provided with a first contact slope, and the code-finding support arm of the code-finding member is provided with a second contact slope opposite to the first contact slope. When the second linkage member slides, the code-finding member is linked through the contact between the first contact slope and the second contact slope. A first return groove and a second return groove are provided between the second linkage member and the code-finding member to cooperate with each other, so that when the second linkage member is reset, it drives the code-finding member to reset.

[0014] The first linkage component is provided with a push rod support arm, and the buckle component is provided with a buckle support arm for the push rod support arm to abut against.

[0015] The bushing and the code-finding arm are respectively provided with a first groove and a second groove, and a bushing magnet and a code-finding magnet are respectively disposed in the first groove and the second groove. Alternatively, the circumferential surface of the bushing is provided with a flange for the end face of the code-finding arm to abut against, the flange including a fourth cam surface and a plane, the plane corresponding to the code position of the bushing.

[0016] After adopting the above technical solution, the present invention has the following technical effects:

[0017] This invention, through a control component, a first linkage component, and a second linkage component, enables the linkage of the latch component and the code-finding component by allowing the user to operate only the control component, thereby achieving automatic code retrieval (see the process description of the first embodiment for details). The user's operation is simplified, eliminating the need to manually rotate the dials to retrieve the code. Through the linkage state design of each component, the code assembly can have at least two states: the latch disengages from the dial and the code-finding arm acts on the bushing; and the latch contacts the dial and the code-finding arm acts on the bushing. In the former state, the dial can rotate freely, and the code-finding arm acting on the bushing can retrieve the corresponding code. In the latter state, the dial is restricted from rotating, causing it to remain at the code position and no longer be rotated. Attached Figure Description

[0018] Figure 1 This is an exploded view of a combination lock.

[0019] Figure 2 This is an exploded view of the cryptographic components according to the first embodiment of the present invention.

[0020] Figure 3 The control component of the first embodiment of the present invention is three-dimensional. Figure 1 .

[0021] Figure 4 The control component of the first embodiment of the present invention is three-dimensional. Figure 2 .

[0022] Figure 5 The first linkage component of the first embodiment of the present invention is three-dimensional. Figure 1 .

[0023] Figure 6 The first linkage component of the first embodiment of the present invention is three-dimensional. Figure 2 .

[0024] Figure 7 This is a perspective view of the active block according to the first embodiment of the present invention.

[0025] Figure 8 This is a perspective view of the fastener according to the first embodiment of the present invention.

[0026] Figure 9 The second linkage component of the first embodiment of the present invention is three-dimensional. Figure 1 .

[0027] Figure 10 The second linkage component of the first embodiment of the present invention is three-dimensional. Figure 2 .

[0028] Figure 11 The three-dimensional code-finding device of the first embodiment of the present invention Figure 1 .

[0029] Figure 12 The three-dimensional code-finding device of the first embodiment of the present invention Figure 2 .

[0030] Figure 13 This is a perspective view of the bushing according to the first embodiment of the present invention.

[0031] Figure 14 This is a schematic diagram of the initial state of the first embodiment of the present invention.

[0032] Figure 15 for Figure 14 A schematic diagram of the lever's state.

[0033] Figure 16 for Figure 14 A schematic diagram of the status of the fasteners.

[0034] Figure 17 This is a schematic diagram of the code-finding process in the first embodiment of the present invention.

[0035] Figure 18 for Figure 17 A schematic diagram of the lever's state.

[0036] Figure 19 for Figure 17 A schematic diagram of the status of the fasteners.

[0037] Figure 20This is a schematic diagram of the code search completion state in the first embodiment of the present invention.

[0038] Figure 21 for Figure 20 A schematic diagram of the lever's state.

[0039] Figure 22 for Figure 20 A schematic diagram of the status of the fasteners.

[0040] Figure 23 This is a schematic diagram of the rotation process of the control component according to the first embodiment of the present invention.

[0041] Figure 24 for Figure 23 A schematic diagram of the lever's state.

[0042] Figure 25 for Figure 23 A schematic diagram of the status of the fasteners.

[0043] Figure 26 This is a perspective view of the bushing according to the second embodiment of the present invention.

[0044] Figure 27 The three-dimensional code-finding device of the first embodiment of the present invention Figure 1 .

[0045] Figure 28 The three-dimensional code-finding device of the first embodiment of the present invention Figure 2 .

[0046] Figure 29 This is a schematic diagram of the lever state during the code-finding process in the second embodiment of the present invention.

[0047] Figure 30 This is a schematic diagram of the lever state in the code search completion state according to the second embodiment of the present invention.

[0048] Explanation of icon numbers:

[0049] 1-Password component; 11-Fixing base; 12-Character wheel; 121-Anti-rotation groove; 13-Bushing; 131-First groove; 132-Fourth cam surface; 133-Flat surface; 14-Moving shaft; 15-Retainer; 2-Control component; 21-Keyway; 22-First cam surface; 22a-Straight wall; 22b-Curved wall; 22c-Groove wall; 22d-Break; 23-Arc-shaped groove; 24-Second cam surface; 25-Third cam surface; 3-Snap fastener; 31-Claw; 32-Snap fastener support 4-Card finding component; 41-Card finding support arm; 411-Second groove; 42-Rotating shaft; 43-Second contact slope; 44-Second return groove; 5-First linkage component; 51-Push rod support arm; 6-Second linkage component; 61-First protrusion; 62-First contact slope; 63-First return groove; 7-Lock cylinder; 8-Screw; 9-Moving block; 91-Second protrusion; 10-Moving spring; 20-Bushing magnet; 30-Card finding magnet; 40-Face cover; 50-Knob; 60-Base. Detailed Implementation

[0050] To further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0051] refer to Figure 1-30 As shown, the present invention discloses an automatic password recovery combination lock, including a password component 1, a control component 2, a latch component 3, a password recovery component 4, a first linkage component 5, and a second linkage component 6;

[0052] The password component 1 includes a fixed base 11, and a plurality of character wheels 12 rotatably mounted in the fixed base 11, and bushings 13 that are movably engaged with the character wheels 12;

[0053] The latch 3 is slidably engaged on one side of the password component 1 and is provided with a claw 31 that prevents the number wheel 12 from rotating freely in the initial state;

[0054] The code-finding component 4 is movably fitted on the other side of the password component 1 and is provided with a code-finding support arm 41 that can act on the bushing 13. When the code-finding support arm 41 acts on the bushing 13, it causes the bushing 13 to rotate, thereby driving the number wheel 12 to rotate to the password position, so that the number displayed by the number wheel 12 is the preset password. The understanding of "acting on" here can be combined with the first and second embodiments below. That is, the means of "acting on" is mainly to use the change of the distance between the code-finding support arm 41 and the bushing 13 to enable the code-finding support arm 41 to drive the bushing 13 by magnetic force or direct contact force, or other types of methods that can drive the bushing 13 to rotate through the movement of the code-finding component 4.

[0055] The first linkage 5 and the second linkage 6 are both slidably fitted on the bottom of the fixed base 11 and are linked with the buckle 3 and the code finder 4 respectively.

[0056] The control component 2 is disposed opposite to the fixed base 11 inside the character wheel combination lock, and its relative movement with the fixed base 11 is achieved through user operation. It is also linked with the first linkage component 5 and the second linkage component 6. The relative movement process of the control component 2 has at least two states: the pawl 31 disengages from the character wheel 12 and the code-finding support arm 41 acts on the bushing 13; the pawl 31 contacts the character wheel 12 and the code-finding support arm 41 acts on the bushing 13.

[0057] Through the above scheme, the present invention, through the control component 2, the first linkage component 5 and the second linkage component 6, can realize the linkage of the buckle component 3 and the code finding component 4 under the premise that the user only operates the control component 2, thereby realizing automatic password retrieval (see the process description of the first embodiment for details). The user's operation is simplified, and there is no need to turn the number wheel 12 one by one to find the code. Through the linkage state design of each component, the password component 1 can have at least two states: the claw 31 is disengaged from the number wheel 12 and the code finding support arm 41 acts on the bushing 13, and the claw 31 is in contact with the number wheel 12 and the code finding support arm 41 acts on the bushing 13. In the former state, the number wheel 12 can rotate freely and the code finding support arm 41 acts on the bushing 13 to retrieve the corresponding password. In the latter state, the number wheel 12 is restricted from rotating, so that the number wheel 12 stays in the password position and is no longer turned.

[0058] In some embodiments of the present invention, the cryptographic component 1 further includes a movable shaft 14 passing through each bushing 13, and a retainer 15 for driving the bushing 13 to engage or disengage from the character wheel 12. The mating relationships of the components of the cryptographic component 1 are disclosed prior art and are not the focus of the present invention, and will not be described in detail here.

[0059] In some embodiments of the present invention, the control component 2 is installed at the tail of the lock cylinder 7 of the combination lock via a key connection and rotates synchronously with the lock cylinder 7. For example, the surface of the control component 2 is provided with a key groove 21 for key connection at the tail of the lock cylinder 7, and the two are secured with screws 8. Thus, when the user unlocks the lock with the (emergency) key, the password can be quickly retrieved, achieving both the unlocking action and the password retrieval purpose, making the operation simpler and providing a better user experience.

[0060] Further, see Figure 3-4The control component 2 has a first cam surface 22 on its circumferential surface, and an arc-shaped groove 23 is recessed on its upper surface. The side of the arc-shaped groove 23 facing away from the first cam surface 22 is a second cam surface 24, and the other side is a third cam surface 25. The two ends of the first linkage component 5 movably abut against the first cam surface 22 and the latching component 3, respectively, so that the first linkage component 5 can be pushed when the control component 2 rotates, thereby pushing the latching component 3 away from the character wheel 12. The second linkage component 6 has a first protrusion 61 that movably engages within the arc-shaped groove 23. The first protrusion 61 is pushed by the second cam surface 24 or the third cam surface 25 as the control component 2 rotates, thereby linking the code-finding component 4. Through the engagement of the first protrusion 61 and the arc-shaped groove 23, the control component 2 can drive the second linkage component 6 in both forward and reverse rotation. The second linkage component 6 does not require additional springs or other parts for reset, resulting in a simpler structure.

[0061] Secondly, the present invention also includes a movable block 9 and a movable spring 10; the aforementioned first cam surface 22 includes a straight wall 22a, a curved wall 22b, and a grooved wall 22c connected in sequence, with a break 22d formed between the grooved wall 22c and the curved wall 22b; the movable block 9 is elastically mounted on the end face of the first linkage 5 that contacts the first cam surface 22 via the movable spring 10; see also Figure 14 In the initial state, the straight wall 22a is parallel to the movable block 9; see [link / reference] Figure 17 When the control component 2 rotates, its curved wall 22b drives the first linkage component 5 by pushing the movable block 9; see also Figure 20 When the control component 2 rotates to its maximum angle, the movable block 9 resets and engages with the groove wall 22c under the elastic force of the movable spring 10. The groove wall 22c provides clearance space so that the first linkage component 5 resets, thus allowing the pawl 31 to fix the character wheel 12 again; see also Figure 23 When the control component 2 rotates, it pushes the movable block 9 to compress the movable spring 10, thus preventing the movable block 9 from interfering with the rotation of the control component 2.

[0062] Furthermore, the aforementioned movable block 9 is provided with a second protrusion 91 that movably engages with the surface of the first cam surface 22.

[0063] In some embodiments of the present invention, the circumferential surface of the character wheel 12 is provided with a plurality of anti-rotation grooves 121 for the pawls 31 to move and engage. After the end of the pawl 31 is inserted into the anti-rotation groove 121, the character wheel 12 cannot rotate freely.

[0064] In some embodiments of the present invention, the above-mentioned latching member 3 is reset by means of a spring or other mechanism that provides elastic force or other force provided in the lock housing.

[0065] In some embodiments of the present invention, see Figure 9-12The aforementioned code-finding component 4 includes a rotating shaft 42 rotatably fitted within a fixed base 11, and the aforementioned code-finding support arm 41 is integrally connected to the circumferential surface of the rotating shaft 42.

[0066] Furthermore, the second linkage member 6 is provided with a first contact slope 62, and the code-finding support arm 41 of the code-finding member 4 is provided with a second contact slope 43 opposite to the first contact slope 62. When the second linkage member 6 slides, the first contact slope 62 and the second contact slope 43 contact each other to realize the linkage of the code-finding member 4 to rotate, thereby realizing the end of the code-finding support arm 41 contacting the bushing 13 to complete the code-finding action.

[0067] Meanwhile, the second linkage 6 and the code-finding component 4 are provided with a first return groove 63 and a second return groove 44 that cooperate with each other, so that when the second linkage 6 is reset, it drives the code-finding component 4 to be reset, thereby separating the code-finding support arm 41 from the bushing 13.

[0068] In some embodiments of the present invention, see Figure 5 , 6 8. The first linkage 5 is provided with a push rod support arm 51, and the buckle 3 is provided with a buckle support arm 32 for the push rod support arm 51 to abut against. When the first linkage 5 slides, the push rod support arm 51 abuts against the buckle support arm 32, thereby pushing the buckle 3 to slide away from the fixed seat 11, so as to realize the separation of the claw 31 from the character wheel 12.

[0069] See Figure 2-25 The first embodiment of the present invention is shown.

[0070] In the first embodiment, see Figure 12 , 13 The bushing 13 and the code-finding arm 41 are respectively provided with a first groove 131 and a second groove 411, and a bushing magnet 20 and a code-finding magnet 30 are respectively provided in the first groove 131 and the second groove 411. Therefore, by bringing the code-finding arm 41 close to the bushing 13 to increase the magnetic force between the two, the bushing 13 can be subjected to force and drive the character wheel 12 to rotate to the code position without direct contact.

[0071] The working principle of the first embodiment is as follows:

[0072] (1) See Figure 14-16 This is the initial state of the lock. At this time, the code-finding arm 41 is away from the bushing 13, and the pawl 31 fixes the number wheel 12 so that it cannot rotate freely.

[0073] (2) See Figure 17-19When the key is inserted to retrieve the code, the key rotation will drive the control component 2 to push the movable block 9 through the first cam surface 22 and drive the first linkage component 5 to move, which in turn drives the buckle component 3 to move, so that the pawl 31 on the buckle component 3 disengages from the anti-rotation groove 121 on the character wheel 12. At this time, the character wheel 12 can rotate flexibly. At the same time, the second cam surface 24 on the control component 2 pushes the second linkage component 6 to move. The second linkage component 6, through the action of the first contact inclined surface 62 and the second contact inclined surface 43, causes the code-finding component 4 to rotate, and the code-finding support arm 41 can approach the bushing 13. Since the bushing 13 has a first groove 131, the bushing magnet 20 is assembled in the corresponding first groove 131 according to the polarity direction. The corresponding code-finding support arm 41 is equipped with a code-finding magnet 30. After the code-finding support arm 41 approaches the bushing 13, the bushing 13, under the action of magnetic force, drives the character wheel 12 to rotate to the preset position, thus retrieving the previously set code.

[0074] (3) See Figure 20-22 When the control component 2 rotates to its maximum angle, its groove wall 22c is aligned with the movable block 9 on the first linkage component 5. The first linkage component 5 and the buckle component 3 retract into place under the action of the spring. The claw 31 on the buckle component 3 is engaged in the anti-rotation groove 121 of the character wheel 12, and the character wheel 12 cannot rotate freely, thus fixing the found password position.

[0075] (4) See Figure 23-25 When the key turns back, the groove wall 22c on the control component 2 abuts against the second protrusion 91 of the movable block 9, causing the movable block 9 to retract against the force of the movable spring 10 until it disengages from the groove wall 22c. The control component 2 continues to rotate until the second protrusion 91 aligns with the straight wall 22a of the control component 2, and the movable block 9 pops out to its initial position under the action of the movable spring 10. Simultaneously with the key turning back, the second linkage 6 retracts under the action of the third cam surface 25 of the control component 2. Through the action of the first retraction groove 63 on the second linkage 6 and the second retraction groove 44 on the code finder 4, the code finder 4 is driven to rotate back to its original position. In this state, when the digit wheel 12 is rotated, the digit wheel 12 drives the bushing 13 to rotate normally.

[0076] See Figure 26-30 The second embodiment of the present invention is shown.

[0077] In the second embodiment, see Figure 26 The bushing 13 has a flange on its circumferential surface for the end face of the code-finding arm 41 to abut against. The flange includes a fourth cam surface 132 and a plane 133, with the plane 133 corresponding to the code position of the bushing 13. Therefore, the thrust from the direct contact between the two can cause the bushing 13 to be subjected to force, thereby driving the number wheel 12 to rotate to the code position.

[0078] The working principle of the second embodiment is similar to that of the first embodiment. The main difference lies in the way the code-finding arm 41 drives the bushing 13: Since the bushing 13 has a fourth cam surface 132, after the code-finding arm 41 contacts the fourth cam surface 132 of the bushing 13, under the action of force, the bushing 13 can be forced to rotate until the end face of the code-finding arm 41 abuts against the plane 133 of the bushing 13 and they coincide, thus retrieving the previously set password.

[0079] Furthermore, when the present invention is applied to a rotary dial combination lock, the complete lock should include a face cover 40 fixed relative to the combination component 1, a knob 50 (which can be part of the lock body shell) rotatably fitted onto the surface of the combination component 1, and a base 60 fixed relative to the fixing seat 11 of the combination component 1.

[0080] The above embodiments and figures are not intended to limit the product form and style of the present invention. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims

1. A combination lock with an automatic password recovery mechanism, characterized in that: Includes a password component, control component, latching component, code-finding component, first linkage component, and second linkage component; The cryptographic component includes a fixed base, a plurality of character wheels rotatably mounted in the fixed base, and bushings that move in cooperation with the character wheels; The latching component slides into one side of the password component and is provided with a pawl that prevents the number wheel from rotating freely in the initial state. The code-finding component is movably fitted to the other side of the password assembly and is provided with a code-finding support arm that can act on the bushing. When the code-finding support arm acts on the bushing, it causes the bushing to rotate, thereby driving the character wheel to rotate to the password position. The first linkage component and the second linkage component are both slidably fitted at the bottom of the fixed base and are respectively linked with the buckle component and the code finding component; The control component is disposed opposite to the fixed base within the character wheel combination lock, and its relative movement with the fixed base is achieved through user operation. It is also linked with the first linkage component and the second linkage component. The relative movement process of the control component has at least two states: the pawl disengages from the character wheel and the code-finding arm acts on the bushing; the pawl contacts the character wheel and the code-finding arm acts on the bushing. The control component has a first cam surface on its circumferential surface and an arc-shaped groove formed on its upper surface. The side of the arc-shaped groove opposite to the first cam surface is a second cam surface, and the other side is a third cam surface. The two ends of the first linkage component movably abut against the first cam surface and the latching component, respectively. The second linkage component has a first protrusion that movably fits in the arc-shaped groove. The first protrusion is pushed by the second cam surface or the third cam surface as the control component rotates.

2. The automatic password recovery combination lock as described in claim 1, characterized in that: The combination lock also includes a movable block and a movable spring; the first cam surface comprises a straight wall, a curved wall, and a grooved wall connected in sequence, with a break between the grooved wall and the curved wall; the movable block is elastically mounted on the end face of the first linkage member that contacts the first cam surface via the movable spring; initially, the straight wall is parallel to the movable block; when the control member rotates, its curved wall pushes the movable block to drive the first linkage member; when the control member rotates to its maximum angle, the movable block resets and engages with the grooved wall under the elastic force of the movable spring, and the grooved wall provides clearance space for the first linkage member to reset; when the control member rotates back, it pushes the movable block to compress the movable spring.

3. The automatic password recovery combination lock as described in claim 2, characterized in that: The movable block is provided with a second protrusion that movably engages with the surface of the first cam.

4. The automatic password recovery combination lock as described in claim 1, characterized in that: The control component is installed at the tail of the lock cylinder of the combination lock via a key connection and rotates synchronously with the lock cylinder.

5. The automatic password recovery combination lock as described in claim 1, characterized in that: The code-finding component includes a rotating shaft that is rotatably fitted within the fixed base, and the code-finding support arm is integrally connected to the circumferential surface of the rotating shaft.

6. The automatic password recovery combination lock as described in claim 5, characterized in that: The second linkage is provided with a first contact slope, and the code-finding support arm of the code-finding component is provided with a second contact slope opposite to the first contact slope. When the second linkage slides, the code-finding component is linked through the contact between the first contact slope and the second contact slope. The second linkage and the code-finding component are provided with a first return groove and a second return groove that cooperate with each other, so that when the second linkage is reset, it drives the code-finding component to reset.

7. The automatic password recovery combination lock as described in claim 1, characterized in that: The first linkage component is provided with a push rod support arm, and the buckle component is provided with a buckle support arm for the push rod support arm to abut against.

8. The automatic password recovery combination lock as described in any one of claims 1 to 7, characterized in that: The bushing and the code-finding support arm are respectively provided with a first groove and a second groove, and the first groove and the second groove are respectively provided with a bushing magnet and a code-finding magnet.

9. The automatic password recovery combination lock as described in any one of claims 1 to 7, characterized in that: The bushing has a flange on its circumferential surface for the end face of the code-finding arm to abut against. The flange includes a fourth cam surface and a plane, the plane corresponding to the code position of the bushing.

Images