Character wheel coded lock capable of automatically retrieving code

Abstract

The invention discloses a character wheel coded lock capable of automatically retrieving a password, which can quickly retrieve the password without shifting a character wheel. The character wheel coded lock comprises a code assembly, a control piece, a buckling piece, a code searching piece, a first linkage piece and a second linkage piece. The code assembly comprises a fixing base, a character wheel rotationally installed in the fixing base, and a lining movably matched with the character wheel. The buckling piece is in sliding fit with one side face of the password assembly and is provided with a clamping jaw which enables the character wheel not to rotate freely in an initial state; the code searching piece is movably matched with the other side face of the password assembly and is provided with a code searching supporting arm capable of acting on the lining, and when the code searching supporting arm acts on the lining, the lining is stressed to drive the character wheel to rotate to the password position; the first linkage piece and the second linkage piece are both in sliding fit with the bottom of the fixing base and are in linkage with the buckling piece and the code searching piece. The control piece is opposite to the fixing base in the character wheel coded lock, moves relative to the fixing base through operation of a user, and is in linkage with the first linkage piece and the second linkage piece at the same time.

Description

Technical Field

[0001] The invention belongs to the technical field of wheel combination locks, in particular to a wheel combination lock capable of automatically retrieving a password. Background Art

[0002] Combination locks, especially wheel combination locks, are a common type of lock in work and life, and are used in a wide range of areas.

[0003] By referring to the applicant's related patents CN212897978U, CN212897978U, CN214576332U, etc., the relevant structure and basic working principle of the wheel combination lock can be understood. Among them, the password component is the core module of the wheel combination lock, and the state and linkage relationship between its components such as the wheel, bushing, movable shaft, and retainer determine the current state of the wheel combination lock: when the wheel and the bushing are engaged, the two rotate synchronously, and the user can input the password by turning the wheel; when the password is correct, the unlocking boss of the movable shaft is opposite to the unlocking groove of the bushing, and the movable shaft can be pushed and no longer restricts the movement of the lock tongue, and the lock can be unlocked; when the retainer is pushed and the wheel is separated from the bushing, the user no longer drives the bushing to rotate when turning the wheel, and the password of the lock can be changed at this time. In addition, in conjunction with other structural designs, functions such as "find password" can also be realized.

[0004] In the prior art, the method of finding the password is mainly to insert the emergency key into the lock core and turn it, and then the lock core is linked to the code-finding member, which has a hook that can be inserted into the groove of the bushing. The user turns the word wheel to make the bushing and the word wheel rotate synchronously until the hook is inserted into the groove and generates rotation resistance, indicating that the password corresponding to the word wheel is found. Obviously, when looking for the password, the user needs to turn the word wheel one by one, which is a cumbersome operation. Summary of the invention

[0005] The main purpose of the present invention is to provide a wheel combination lock for automatically retrieving passwords, so as to solve the problems existing in the prior art and quickly retrieve the passwords set by users. Users no longer need to turn the wheel one by one, and the operation is simpler.

[0006] In order to achieve the above object, the solution of the present invention is: A wheel combination lock for automatically retrieving a password, comprising a password assembly, a control member, a buckle member, a code-seeking member, a first linkage member and a second linkage member; the password assembly comprises a fixed seat, and a plurality of word wheels rotatably mounted in the fixed seat, and a bushing movably matched with the word wheels; the buckle member is slidably matched with one side of the password assembly, and is provided with a claw that prevents the word wheel from rotating freely in an initial state; the code-seeking member is movably matched with the other side of the password assembly, and is provided with a code-seeking support arm that can act on the bushing, and when the code-seeking support arm acts on the bushing, the bushing is The first linkage member and the second linkage member are both slidably fitted on the bottom of the fixing seat, and are respectively linked with the buckle member and the code-finding member; the control member is arranged opposite to the fixing seat in the word wheel combination lock, and realizes relative movement with the fixing seat through user operation, and is linked with the first linkage member and the second linkage member at the same time; the relative movement process of the control member is provided with at least two states: the claw is disengaged from the word wheel, and the code-finding arm acts on the bushing; the claw contacts the word wheel, and the code-finding arm acts on the bushing.

[0007] The circumferential surface of the control member is provided with a first cam surface, and the upper surface of the control member is recessed to form an arc-shaped groove; the side of the arc-shaped groove away from the first cam surface is the second cam surface, and the other side is the third cam surface; the two ends of the first linkage member are movably abutted against the first cam surface and the snap member respectively; the second linkage member is provided with a first protrusion movably fitted in the arc-shaped groove, and the first protrusion is pushed by the second cam surface or the third cam surface as the control member rotates.

[0008] Preferably, the word wheel combination lock is also provided with a movable block and a movable spring; the first cam surface comprises a straight wall, a curved wall and a groove wall connected in sequence, and a break is formed between the groove wall and the curved wall; the movable block is elastically mounted on the end face of the first linkage member in contact with the first cam surface through the movable spring; in an initial state, the straight wall is parallel to the movable block; when the control member rotates, its curved wall drives the first linkage member by pushing the movable block; when the control member rotates to the maximum angle, the movable block is reset and stuck into the groove wall under the elastic force of the movable spring, and the groove wall provides a clearance space for resetting the first linkage member; when the control member rotates, it pushes the movable block to compress the movable spring.

[0009] Preferably, the movable block is provided with a second protrusion movably fitted on the surface of the first cam surface.

[0010] Preferably, the control member is mounted at the rear of the lock core of the wheel combination lock by means of a key connection, and rotates synchronously with the lock core.

[0011] The code-finding member comprises a rotating shaft rotatably fitted in the fixing seat, and the code-finding support arm is integrally connected to the circumferential surface of the rotating shaft.

[0012] Preferably, the second linkage member is provided with a first contact inclined surface, and the code-seeking arm of the code-seeking member is provided with a second contact inclined surface opposite to the first contact inclined surface, and the code-seeking member is linked to the code-seeking member through the contact between the first contact inclined surface and the second contact inclined surface when the second linkage member slides; a first retraction groove and a second retraction groove that cooperate with each other are provided between the second linkage member and the code-seeking member, so that the code-seeking member is reset when the second linkage member is reset.

[0013] The first linkage member is provided with a push rod support arm, and the buckle member is provided with a buckle support arm for the push rod support arm to abut against.

[0014] The bushing and the code-finding arm are provided with a first embedding groove and a second embedding groove, respectively, and the bushing magnet and the code-finding magnet are provided in the first embedding groove and the second embedding groove, respectively. Alternatively, the bushing is provided with a flange on the circumference thereof for the end face of the code-finding arm to abut, and the flange includes a fourth cam surface and a plane, and the plane corresponds to the password position of the bushing.

[0015] After adopting the above technical solution, the present invention has the following technical effects: The present invention can realize the linkage of the latching member and the code-finding member under the premise that the user only operates the control member through the control member, the first linkage member and the second linkage member, thereby realizing automatic retrieval of the password (see the process description of the first embodiment for details), and the user's operation is simplified, and there is no need to turn the character wheel one by one to search for the code; through the linkage state design of each component, the password component can have at least two states, the latching claw is separated from the character wheel and the code-finding arm acts on the bushing, and the latching claw contacts the character wheel and the code-finding arm acts on the bushing. In the former state, the character wheel can rotate freely, and the code-finding arm acts on the bushing to retrieve the corresponding password, while in the latter state, the character wheel is restricted from rotating, so that the character wheel stays at the password position and is no longer turned. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an exploded view of the wheel combination lock.

[0017] Figure 2 This is an exploded view of the password component of the first embodiment of the present invention.

[0018] Figure 3 The control unit of the first embodiment of the present invention is a three-dimensional Figure 1 .

[0019] Figure 4 The control unit of the first embodiment of the present invention is a three-dimensional Figure 2 .

[0020] Figure 5 The first linkage member of the first embodiment of the present invention is a three-dimensional Figure 1 .

[0021] Figure 6 The first linkage member of the first embodiment of the present invention is a three-dimensional Figure 2 .

[0022] Figure 7 It is a three-dimensional diagram of the movable block of the first embodiment of the present invention.

[0023] Figure 8 FIG. 1 is a three-dimensional diagram of a buckle according to a first embodiment of the present invention.

[0024] Fig. 9 The second linkage member of the first embodiment of the present invention is a three-dimensional Figure 1 .

[0025] Fig.10 The second linkage member of the first embodiment of the present invention is a three-dimensional Figure 2 .

[0026] Fig.11 The code-seeking element of the first embodiment of the present invention is a three-dimensional Figure 1 .

[0027] Fig.12 The code-seeking element of the first embodiment of the present invention is a three-dimensional Figure 2 .

[0028] Fig.13 It is a three-dimensional diagram of a bushing according to the first embodiment of the present invention.

[0029] Fig.14 Schematic diagram of the initial state of the first embodiment of the present invention.

[0030] Fig.15 for Fig.14 Schematic diagram of the lever status.

[0031] Fig.16 for Fig.14 Schematic diagram of the fastener status.

[0032] Fig.17 FIG. 1 is a schematic diagram of a code search process according to a first embodiment of the present invention.

[0033] Fig.18 for Fig.17 Schematic diagram of the lever status.

[0034] Fig.19 for Fig.17 Schematic diagram of the fastener status.

[0035] Fig. 20 Schematic diagram of the code search completion state of the first embodiment of the present invention.

[0036] Fig.21 for Fig. 20 Schematic diagram of the lever status.

[0037] Fig. 22 for Fig. 20 Schematic diagram of the fastener status.

[0038] Fig.23 Schematic diagram of the control member rotation process of the first embodiment of the present invention.

[0039] Fig.24 for Fig.23 Schematic diagram of the lever status.

[0040] Fig.25 for Fig.23 Schematic diagram of the fastener status.

[0041] Fig.26 It is a three-dimensional diagram of a bushing according to a second embodiment of the present invention.

[0042] Fig. 27 The code-seeking element of the first embodiment of the present invention is a three-dimensional Figure 1 .

[0043] Fig.28 The code-seeking element of the first embodiment of the present invention is a three-dimensional Figure 2 .

[0044] Fig.29 FIG. 4 is a schematic diagram of the lever status during the code searching process according to the second embodiment of the present invention.

[0045] Fig.30 FIG. 1 is a schematic diagram of the lever status in the code search completion state according to the second embodiment of the present invention.

[0046] Description of Figure Numbers: 1-password assembly; 11-fixed seat; 12-character wheel; 121-stop groove; 13-bushing; 131-first embedded groove; 132-fourth cam surface; 133-plane; 14-movable shaft; 15-cage; 2-control member; 21-keyway; 22-first cam surface; 22a-straight wall; 22b-curved wall; 22c-groove wall; 22d-fracture; 23-arc groove; 24-second cam surface; 25-third cam surface; 3-clip member; 31-claw; 32-clip support arm; 4-code-finding member; 41-code-finding support arm; 411-second embedding groove; 42-rotating shaft; 43-second contact slope; 44-second retraction groove; 5-first linkage member; 51-push rod support arm; 6-second linkage member; 61-first protrusion; 62-first contact slope; 63-first retraction groove; 7-lock cylinder; 8-screw; 9-movable block; 91-second protrusion; 10-movable spring; 20-bushing magnet; 30-code-finding magnet; 40-face cover; 50-knob; 60-base. DETAILED DESCRIPTION

[0047] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0048] refer to Figure 1-30 As shown, the present invention discloses a wheel combination lock for automatically retrieving a password, comprising a password component 1, a control component 2, a buckle component 3, a code-seeking component 4, a first linkage component 5 and a second linkage component 6; The password assembly 1 includes a fixed seat 11, a plurality of character wheels 12 rotatably mounted in the fixed seat 11, and a bushing 13 movably matched with the character wheels 12; The latch 3 is slidably fitted on one side of the password assembly 1 and is provided with a claw 31 which prevents the character wheel 12 from rotating freely in the initial state; The code-seeking member 4 is movably matched with the other side of the password component 1, and is provided with a code-seeking arm 41 that can act on the bushing 13. When the code-seeking arm 41 acts on the bushing 13, the bushing 13 is rotated to drive the character wheel 12 to rotate to the password position, so that the number displayed on the character 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 realizing "acting on" mainly lies in that the code-seeking arm 41 drives the bushing 13 by using the change of the distance between the code-seeking arm 41 and the bushing 13 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-seeking member 4; The first linkage member 5 and the second linkage member 6 are both slidably fitted at the bottom of the fixing seat 11, and are respectively linked with the buckle member 3 and the code-finding member 4; The control member 2 is arranged opposite to the fixed seat 11 in the character wheel combination lock, and realizes relative movement with the fixed seat 11 through user operation, and is linked with the first linkage member 5 and the second linkage member 6 at the same time; the relative movement process of the control member 2 is arranged with at least two states: the claw 31 is separated from the character wheel 12, and the code-seeking arm 41 acts on the bushing 13; the claw 31 contacts the character wheel 12, and the code-seeking arm 41 acts on the bushing 13.

[0049] Through the above scheme, the present invention can realize the linkage of the latch member 3 and the code-finding member 4 under the premise that the user only operates the control member 2 through the control member 2, the first linkage member 5 and the second linkage member 6, thereby realizing automatic password retrieval (see the process description of the first embodiment for details), and the user's operation is simplified, and there is no need to turn the character wheel 12 one by one to search for 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 character wheel 12, the code-finding arm 41 acts on the bushing 13, and the claw 31 contacts the character wheel 12, and the code-finding arm 41 acts on the bushing 13. In the former state, the character wheel 12 can rotate freely, and the code-finding arm 41 acts on the bushing 13 to retrieve the corresponding password, while in the latter state, the character wheel 12 is restricted from rotating, so that the character wheel 12 stays at the password position and is no longer moved.

[0050] In some embodiments of the present invention, the password assembly 1 further includes a movable shaft 14 passing through each bushing 13, and a retaining frame 15 for driving the bushing 13 to engage or separate with the character wheel 12. The matching relationship of the various components of the password assembly 1 belongs to the disclosed prior art and is not the focus of the present invention, so it will not be described in detail here.

[0051] In some embodiments of the present invention, the control member 2 is installed at the tail of the lock cylinder 7 of the wheel combination lock by key connection, and rotates synchronously with the lock cylinder 7. For example, the surface of the control member 2 is provided with a key slot 21 for key connection of the tail of the lock cylinder 7, and the two are locked by a screw 8. Therefore, when the user uses the (emergency) key to unlock the lock, the password can be quickly retrieved, which not only realizes the action of unlocking, but also achieves the purpose of retrieving the password, the operation is more concise, and the user experience is good.

[0052] Further, see Figure 3-4The circumferential surface of the control member 2 is provided with a first cam surface 22, and the upper surface of the control member 2 is concave to form an arc-shaped groove 23; the side of the arc-shaped groove 23 away from the first cam surface 22 is the second cam surface 24, and the other side is the third cam surface 25; the two ends of the first linkage member 5 are respectively movably in contact with the first cam surface 22 and the buckle member 3, so that the first linkage member 5 can be pushed when the control member 2 rotates, and then the buckle member 3 is pushed away from the character wheel 12; the second linkage member 6 is provided with a first protrusion 61 movably engaged in the arc-shaped groove 23, and the first protrusion 61 is pushed by the second cam surface 24 or the third cam surface 25 as the control member 2 rotates, and then the code-seeking member 4 is linked. The control member 2 can drive the second linkage member 6 in both forward and reverse rotations through the cooperation of the first protrusion 61 and the arc-shaped groove 23, and the second linkage member 6 does not need to be additionally provided with springs and other parts to achieve reset, and the structure is simpler.

[0053] Secondly, the present invention is also provided with a movable block 9 and a movable spring 10; the first cam surface 22 comprises a straight wall 22a, a curved wall 22b and a groove wall 22c connected in sequence, and a break 22d is formed between the groove wall 22c and the curved wall 22b; the movable block 9 is elastically mounted on the end surface of the first linkage member 5 in contact with the first cam surface 22 through the movable spring 10; see Fig.14 In the initial state, the straight wall 22a is parallel to the movable block 9; see Fig.17 When the control member 2 rotates, its curved wall 22b drives the first linkage member 5 by pushing the movable block 9; see Fig. 20 When the control member 2 rotates to the maximum angle, the movable block 9 is reset and snapped into the groove wall 22c under the elastic force of the movable spring 10. The groove wall 22c provides a space for the first linkage member 5 to reset, that is, the claw 31 fixes the character wheel 12 again; see Fig.23 When the control member 2 rotates, it pushes the movable block 9 to compress the movable spring 10 to prevent the movable block 9 from interfering with the rotation of the control member 2.

[0054] Furthermore, the movable block 9 is provided with a second protrusion 91 movably engaged with the surface of the first cam surface 22 .

[0055] In some embodiments of the present invention, the circumference of the character wheel 12 is provided with a plurality of anti-rotation grooves 121 for the claws 31 to flexibly cooperate with. After the ends of the claws 31 are inserted into the anti-rotation grooves 121, the character wheel 12 cannot rotate freely.

[0056] In some embodiments of the present invention, the above-mentioned latch 3 is reset by means of a spring or other mechanism providing elastic force or the like disposed in the lock housing.

[0057] In some embodiments of the present invention, see Figure 9-12The code-finding member 4 includes a rotating shaft 42 rotatably engaged in the fixing seat 11 , and the code-finding arm 41 is integrally connected to the circumferential surface of the rotating shaft 42 .

[0058] Furthermore, the second linkage member 6 is provided with a first contact slope 62, and the code-seeking arm 41 of the code-seeking 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 linkage code-seeking member 4 is rotated through the contact between the first contact slope 62 and the second contact slope 43, thereby realizing the contact between the end of the code-seeking arm 41 and the bushing 13 to complete the code-seeking action.

[0059] At the same time, a first retracting groove 63 and a second retracting groove 44 are provided between the second linkage member 6 and the code-finding member 4 to cooperate with each other, so that when the second linkage member 6 is reset, the code-finding member 4 is driven to reset, so that the code-finding arm 41 is separated from the bushing 13 .

[0060] In some embodiments of the present invention, see Figure 5 , 6 8. The first linkage member 5 is provided with a push rod support arm 51, and the buckle member 3 is provided with a buckle support arm 32 for the push rod support arm 51 to abut. When the first linkage member 5 slides, the push rod support arm 51 abuts against the buckle support arm 32, thereby pushing the buckle member 3 to slide away from the fixing seat 11, so as to separate the claw 31 from the character wheel 12.

[0061] See also Figure 2-25 , showing the first embodiment of the present invention.

[0062] In the first embodiment, see Fig.12 , 13 The bushing 13 and the code-finding arm 41 are provided with a first embedding groove 131 and a second embedding groove 411, respectively, and the bushing magnet 20 and the code-finding magnet 30 are respectively provided in the first embedding groove 131 and the second embedding 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 without direct contact to drive the character wheel 12 to rotate to the password position.

[0063] The working principle of the first embodiment is: (1) See Figure 14-16 , which is the initial state of the lock, at which the code-seeking arm 41 is away from the bushing 13, and the claw 31 fixes the character wheel 12 so that it cannot rotate freely; (2) See Figure 17-19When the key is inserted to search for the code, the rotation of the key will drive the control member 2 to push the movable block 9 through the first cam surface 22 and drive the first linkage member 5 to move, thereby pushing the latch member 3 to move, so that the claw 31 on the latch member 3 is disengaged from the anti-rotation groove 121 on the character wheel 12, and the character wheel 12 can rotate flexibly at this time; at the same time, the second cam surface 24 on the control member 2 pushes the second linkage member 6 to move, and the second linkage member 6 rotates through the action of the first contact inclined surface 62 and the second contact inclined surface 43, so that the code-seeking member 4 rotates, and the code-seeking arm 41 is able to approach the bushing 13; since the bushing 13 has a first embedding groove 131, the bushing magnet 20 is assembled in the corresponding first embedding groove 131 according to the polarity direction, and the corresponding code-seeking arm 41 is equipped with a code-seeking magnet 30. After the code-seeking arm 41 approaches the bushing 13, the bushing 13 drives the character wheel 12 to rotate to a preset position under the action of the magnetic force, so that the previously set password is retrieved.

[0064] (3) See Figure 20-22 When the control member 2 rotates to the maximum angle, its groove wall 22c faces the movable block 9 on the first linkage member 5, and the first linkage member 5 and the buckle member 3 retreat to their original positions under the action of the spring. The claw 31 on the buckle member 3 is inserted into the anti-rotation groove 121 of the character wheel 12, and the character wheel 12 cannot rotate freely, thereby fixing the password position found.

[0065] (4) See Figure 23-25 When the key is turned back, the groove wall 22c on the control member 2 presses against the second protrusion 91 of the movable block 9, so that the movable block 9 overcomes the force of the movable spring 10 and retreats until it is separated from the groove wall 22c; the control member 2 continues to rotate until the second protrusion 91 corresponds to the straight wall 22a of the control member 2, and the movable block 9 pops up to the initial position under the action of the movable spring 10; while the key is turned back, driven by the third cam surface 25 of the control member 2, the second linkage member 6 retreats, and the first retreat groove 63 on the second linkage member 6 and the second retreat groove 44 on the code finder 4 are driven to rotate back to the original position. In this state, when the character wheel 12 is rotated, the character wheel 12 drives the bushing 13 to rotate normally.

[0066] See also Figure 26-30 , showing a second embodiment of the present invention.

[0067] In the second embodiment, see Fig.26 The circumferential surface of the bushing 13 is provided with a flange for the end surface of the code-seeking support arm 41 to abut against, and the flange includes a fourth cam surface 132 and a plane 133, and the plane 133 corresponds to the password position of the bushing 13. Therefore, the bushing 13 can be subjected to force by the thrust of the direct contact between the two to drive the character wheel 12 to rotate to the password position.

[0068] The working principle of the second embodiment is similar to that of the first embodiment, and the main difference lies in the way in which 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 to achieve overlap, thereby retrieving the previously set password.

[0069] In addition, when the present invention is applied to a knob-type wheel combination lock, the complete lock should include a cover 40 fixed relatively to the combination component 1, a knob 50 relatively rotatably sleeved on the surface of the combination component 1 (the knob 50 can be used as a part of the lock body shell), a base 60 fixed relatively to the fixing seat 11 of the combination component 1, etc.

[0070] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A wheel combination lock with automatic password retrieval, characterized by: It includes a password component, a control component, a buckle component, a code-finding component, a first linkage component and a second linkage component; The password assembly includes a fixed seat, a plurality of character wheels rotatably mounted in the fixed seat, and bushings movably matched with the character wheels; The buckle is slidably fitted on one side of the password component and is provided with a claw that prevents the character wheel from rotating freely in an initial state; The code-finding member is movably matched with the other side of the password component, and is provided with a code-finding arm that can act on the bushing. When the code-finding arm acts on the bushing, the bushing is rotated to drive the character wheel to rotate to the password position; The first linkage member and the second linkage member are both slidably matched at the bottom of the fixing seat, and are respectively linked with the buckle member and the code-finding member; The control member is arranged opposite to the fixing seat in the character wheel combination lock, and realizes relative movement with the fixing seat through user operation, and is linked with the first linkage member and the second linkage member at the same time; the relative movement process of the control member is provided with at least two states: the claw is separated from the character wheel, and the code-finding arm acts on the bushing; the claw contacts the character wheel, and the code-finding arm acts on the bushing.

2. The wheel combination lock with automatic password retrieval as claimed in claim 1, characterized in that: The circumferential surface of the control member is provided with a first cam surface, and the upper surface of the control member is recessed to form an arc-shaped groove; the side of the arc-shaped groove away from the first cam surface is the second cam surface, and the other side is the third cam surface; the two ends of the first linkage member are movably abutted against the first cam surface and the snap member respectively; the second linkage member is provided with a first protrusion movably fitted in the arc-shaped groove, and the first protrusion is pushed by the second cam surface or the third cam surface as the control member rotates.

3. The wheel combination lock with automatic password retrieval as claimed in claim 2, characterized in that: The word wheel combination lock is also provided with a movable block and a movable spring; the first cam surface includes a straight wall, a curved wall and a groove wall connected in sequence, and a break is formed between the groove wall and the curved wall; the movable block is elastically mounted on the end surface of the first linkage member in contact with the first cam surface through the movable spring; in an initial state, the straight wall is parallel to the movable block; when the control member rotates, its curved wall drives the first linkage member by pushing the movable block; when the control member rotates to the maximum angle, the movable block is reset and stuck into the groove wall under the elastic force of the movable spring, and the groove wall provides a clearance space for resetting the first linkage member; when the control member rotates, it pushes the movable block to compress the movable spring.

4. The wheel combination lock with automatic password retrieval as claimed in claim 3, characterized in that: The movable block is provided with a second protrusion movably fitted on the surface of the first cam surface.

5. The wheel combination lock with automatic password retrieval as claimed in claim 2, characterized in that: The control component is installed at the tail of the lock core of the wheel combination lock in a key connection manner and rotates synchronously with the lock core.

6. The wheel combination lock with automatic password retrieval as claimed in claim 1, characterized in that: The code-finding member comprises a rotating shaft rotatably fitted in the fixing seat, and the code-finding support arm is integrally connected to the circumferential surface of the rotating shaft.

7. The wheel combination lock with automatic password recovery as claimed in claim 6, characterized in that: The second linkage member is provided with a first contact inclined surface, and the code-seeking arm of the code-seeking member is provided with a second contact inclined surface opposite to the first contact inclined surface. When the second linkage member slides, the code-seeking member is linked through the contact between the first contact inclined surface and the second contact inclined surface; a first retraction groove and a second retraction groove that cooperate with each other are provided between the second linkage member and the code-seeking member, so that the code-seeking member can be reset when the second linkage member is reset.

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

9. The wheel combination lock with automatic password retrieval as claimed in any one of claims 1 to 8, characterized in that: The bushing and the code-finding arm are respectively provided with a first embedding groove and a second embedding groove, and the first embedding groove and the second embedding groove are respectively provided with a bushing magnet and a code-finding magnet.

10. The wheel combination lock with automatic password retrieval as claimed in any one of claims 1 to 8, characterized in that: The peripheral surface of the bushing is provided with a flange for the end surface of the code-finding support arm to abut against, and the flange includes a fourth cam surface and a plane, and the plane corresponds to the password position of the bushing.

Images