Magnetic coded lock

Abstract

The utility model relates to a magnetic coded lock which comprises a tail cover, a supporting rack, a reset spring, a code assembly, a code changing assembly, a head cover and a key rack, the code assembly comprises a code wheel, a code changing wheel and a magnet fixing wheel, and a plurality of limiting teeth are formed on the circumferential side face of the supporting rack. First limiting grooves matched with the limiting teeth are formed in the inner circumferential face of the magnet fixing wheel, the magnet fixing wheel is arranged on the supporting rack in a penetrating mode and located on one side of the code changing wheel, and a plurality of first magnets and second magnets which are in one-to-one correspondence are embedded in the faces, opposite to the magnet fixing wheel, of the code changing wheel. The reset spring is arranged on the supporting rack in a penetrating mode and abuts against the magnet fixing wheel at the tail end, the first magnet and the second magnet are attracted to enable the magnet fixing wheel to abut against the code changing wheel, and the limiting teeth are inserted into the first limiting grooves. According to the magnetic coded lock, the effect of a hand feeling piece is achieved through cooperation of the first magnet and the second magnet, the problems of abrasion caused by mechanical friction and aging caused by the environment are solved, and the overall durability of the coded lock is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of locks, in particular to a magnetic password lock. Background Art

[0002] In a combination wheel type combination lock, unlocking or locking is achieved by rotating several arranged combination wheels. For example, a combination lock is disclosed in a new patent: A combination lock (Announcement No.: CN208605046U). In the above combination lock, in order to improve the tactile feel when turning the combination wheel and apply a certain damping to the rotation of the combination wheel, a hand-feeling piece is provided on one side of the combination wheel that elastically rests against the combination wheel. In order to ensure the resilience of the hand-feeling piece, the hand-feeling piece is generally made of plastic, which makes the hand-feeling piece easily wear out after long-term use of the combination wheel. When the lock is exposed to the outdoors or in harsh environments for a long time, the hand-feeling piece is prone to aging, resulting in insufficient durability of the overall combination lock.

[0003] In view of the above problems, the present invention makes improvements. Utility Model Content

[0004] The utility model provides a magnetic password lock, which solves the above problems existing in the prior art during use.

[0005] The technical solution of the present utility model is achieved as follows:

[0006] The pawl is connected to the key chain and the pawl is connected to the key chain, and the pawl is connected to the key chain and the pawl is connected to the key chain.

[0007] Preferably, a plurality of linkage grooves are formed on the port of the cipher wheel, a plurality of linkage teeth matching the linkage grooves and inserted into the plurality of linkage grooves are formed on the outer circumference of the code changing wheel, and a second limiting groove matching the limiting teeth is provided on the inner circumference of the code changing wheel.

[0008] Preferably, the code changing wheel and the magnet fixing wheel are located inside the cipher wheel, and a bearing is provided between the cipher wheel and the magnet fixing wheel.

[0009] Preferably, a third limiting groove matched with the limiting teeth is arranged on the inner circumference of the code changing main push wheel, the limiting teeth are kept in the third limiting groove, a guide inclined surface is formed on the surface of the code changing main push wheel, the code changing auxiliary push wheel is rotatably arranged on the supporting rack through buckling and a guide column is formed on the code changing auxiliary push wheel and abuts against the guide inclined surface.

[0010] Preferably, the tail cover is connected with a key ring connecting piece at the end.

[0011] Preferably, a sliding cavity is arranged on the end surface of the key ring connecting piece, two sliding clamping blocks are symmetrically arranged in the sliding cavity, a clamping block spring is arranged between the two sliding clamping blocks, a pressing protrusion and a clamping protrusion are formed on the outer side surface of the sliding clamping block, the pressing protrusion and the clamping protrusion respectively pass through a first perforation and a second perforation arranged on the key ring connecting piece under the action of the clamping block spring, an insertion cavity matched with the end of the key ring connecting piece is formed at the end of the tail cover, a clamping ring groove is arranged on the inner wall of the insertion cavity, and the end of the key ring connecting piece is inserted into the insertion cavity so that the clamping protrusion is clamped into the clamping ring groove.

[0012] Preferably, a third magnet and a fourth magnet are respectively arranged in the insertion cavity and the sliding cavity, and the third magnet and the fourth magnet are attracted when the end of the key ring connecting piece is inserted into the insertion cavity.

[0013] In summary, the beneficial effects of the present application are as follows: when the rotating code wheel is used to open or close the combination lock, the code changing wheel rotates synchronously under the driving of the code wheel, the magnetic stone fixed wheel is circumferentially limited by the cooperation of the limiting teeth and the first limiting groove, the code changing wheel drives the first magnetic stones to rotate relative to the second magnetic stones on the magnetic stone fixed wheel, the first magnetic stones and the second magnetic stones are re-attracted by relative rotation, the rotation of the code changing wheel and the code wheel is provided with paragraph feeling damping and positioning effect, the smoothness and smoothness of the operation are ensured, the abrasion of the hand feeling piece caused by mechanical friction or the aging caused by the environment is avoided, and the durability of the combination lock as a whole is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Figure 1 The structural schematic diagram of the present application;

[0016] Figure 2 This is an exploded schematic diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the password component in the present utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the code changing component in the present utility model;

[0019] Figure 5 This is a structural diagram of the keychain connector in the present utility model.

[0020] Figure: 1, tail cover; 11, plug-in cavity; 12, snap ring groove; 13, third magnet; 2, support rack; 21, limit tooth; 3, reset spring; 4, password assembly; 41, password wheel; 411, linkage groove; 42, code change wheel; 421, linkage tooth; 422, second limit groove; 43, magnet fixing wheel; 431, first limit groove; 44, first magnet; 45, second magnet; 46, bearing ;5. Code changing assembly;51. Code changing main push wheel;511. Third limiting groove;512. Guide slope;52. Code changing auxiliary push wheel;521. Guide column;6. Head cover;7. Key rack;8. Key chain connector;81. Sliding cavity;82. Sliding block;821. Pressing protrusion;822. Clamping protrusion;83. Block spring;84. First through hole;85. Second through hole;86. Fourth magnet. DETAILED DESCRIPTION

[0021] The following is a combination of the appended examples of the present invention Figure 1-5 , clearly and completely describes 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 them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0022] As shown in the figure, a magnetic password lock includes a tail cover 1, a support rack 2, a reset spring 3, a password component 4, a code changing component 5, a head cover 6 and a key rack 7. The password component 4 includes a password wheel 41 and a code changing wheel 42 that are inserted on the support rack 2. The code changing component 5 includes a code changing main push wheel 51 and a code changing auxiliary push wheel 52 that are inserted on the support rack 2. The head cover 6 is fixedly connected to the code changing auxiliary push wheel 52. A plurality of limit teeth 21 are formed on the side surface of the support rack 2. The password component 4 also includes a magnet fixing wheel 43. The magnet fixing wheel 4 A first limiting groove 431 matching the limiting tooth 21 is provided on the inner circumference surface of the cam 3. The magnet fixing wheel 43 is inserted through the support rack 2 and is located on one side of the code-changing wheel 42. A plurality of first magnets 44 and second magnets 45 corresponding to each other are respectively embedded on the surfaces opposite to the code-changing wheel 42 and the magnet fixing wheel 43. The reset spring 3 is inserted through the support rack 2 and abuts against the magnet fixing wheel 43 at the rear end. The first magnet 44 and the second magnet 45 are attracted to keep the magnet fixing wheel 43 and the code-changing wheel 42 against each other, so that the limiting tooth 21 is inserted into the first limiting groove 431.

[0023] Specifically, a plurality of linkage grooves 411 are formed on the port of the code wheel 41, and a plurality of linkage teeth 421 matching the linkage grooves 411 and inserted into the plurality of linkage grooves 411 are formed on the outer circumferential surface of the code changing wheel 42, so as to realize the linkage when the code wheel 41 and the code changing wheel 42 rotate. A second limiting groove 422 matching the limiting tooth 21 is provided on the inner circumferential surface of the code changing wheel 42. Under normal circumstances, the code changing wheel 42 is located between two adjacent limiting teeth 21, so that the code changing wheel 42 can rotate on the support rack 2 and pass between the two limiting teeth 21.

[0024] Specifically, a third limiting groove 511 matching the limiting tooth 21 is provided on the inner circumference of the code-changing main pushing wheel 51, and the limiting tooth 21 is retained in the third limiting groove 511. A guide inclined surface 512 is formed on the surface of the code-changing main pushing wheel 51 facing the code-changing main pushing wheel 51, and the code-changing auxiliary pushing wheel 52 is arranged on the supporting rack 2 by a snap-fit ​​rotation, and a guide column 521 is formed on the code-changing auxiliary pushing wheel 52, which abuts against the guide inclined surface 512.

[0025] In the above structure, under the action of the reset spring 3 and the first magnet 44 and the second magnet 45, the code-changing wheel 42 is kept in contact with the password wheel 41 so that the linkage tooth 421 is inserted into the linkage groove 411 to realize the linkage when the code-changing wheel 42 and the password wheel 41 rotate. The code-changing wheel 42 is kept in contact with the magnet fixing wheel 43 and the limiting tooth 21 is kept in the first limiting groove 431 to limit the rotation of the magnet fixing wheel 43 on the support rack 2. When using this combination lock, the code-changing wheel 42 is driven to rotate by rotating the password wheel 41. During the rotation of the code-changing wheel 42, the first magnet 44 on the code-changing wheel 42 rotates with the code-changing wheel 42 and then re-attracts the second magnet 45. The first magnet 44 and the second magnet 45 act together to apply a segmented damping to the rotation of the code wheel 41, thereby improving the feel when rotating the code wheel 41 and providing a positioning function for the code wheel 41 when rotating, so that the codes on the code wheels 41 can be accurately aligned. After the codes on the code wheels 41 are aligned, the lock tooth grooves on the code wheels 41 are also aligned with each other. At this time, the key rack 7 can be inserted into the support rack 2 through the head cover 6, and then the code wheel 41 can be shuffled so that the code wheel 41 drives the code wheel 42 to rotate and get stuck in the lock tooth groove of the key rack 7 to achieve locking of the key rack 7. In the above-mentioned unlocking or unlocking by rotating the code wheel 41 During the locking process, the adsorption effect of the first magnet 44 and the second magnet 45 provides segmented damping and positioning for the rotation of the code wheel 41, ensuring the smoothness and smoothness of the operation, and avoiding the wear of the hand-feeling piece due to mechanical friction or aging due to the environment in the prior art, thereby improving the overall durability of the code lock. When the code lock needs to be changed, after the key rack 7 is pulled out, the code-changing auxiliary wheel 52 is rotated through the head cover 6, and the code-changing auxiliary wheel 52 drives the guide column 521 to rotate from the lowest end to the highest end on the guide inclined surface 512. In this process, the limiting tooth 21 cooperates with the third limiting groove 511 to push the code-changing main push wheel 5 1 applies a circumferential limit, causing the code-changing main pushing wheel 51 to slide axially on the lower support rack 2 under the push of the guide column 521, so that the code-changing main pushing wheel 51 pushes the multiple code-changing wheels 42 and the magnet fixing wheel 43 to slide toward the reset spring 3 at the same time, causing the linkage tooth 421 to exit the linkage groove 411. At this time, the code wheel 41 can rotate freely relative to the code-changing wheel 42 to change the code. After the change is completed, the head cover 6 is released, and the multiple code-changing wheels 42 and the magnet fixing wheel 43 slide toward the code wheel 41 under the reset force of the reset spring 3, causing the linkage tooth 421 to re-insert into the linkage groove 411, realizing the linkage when the code wheel 41 and the code-changing wheel 42 rotate.

[0026] In addition, the code changing wheel 42 and the magnet fixing wheel 43 are located inside the password wheel 41, and a bearing 46 is provided between the password wheel 41 and the magnet fixing wheel 43. The bearing 46 enhances the stability and smoothness of the password wheel 41 driving the code changing wheel 42 to rotate relative to the magnet fixing wheel 43, thereby improving the operating feel when the password lock is unlocked or locked.

[0027] In addition, the end of the tail cover 1 is connected to a key chain connector 8. Specifically, a sliding cavity 81 is provided on the end surface of the key chain connector 8. Two sliding blocks 82 are symmetrically arranged in the sliding cavity 81. A block spring 83 is provided between the two sliding blocks 82. A pressing protrusion 821 and a clamping protrusion 822 are formed on the outer surface of the sliding block 82. The pressing protrusion 821 and the clamping protrusion 822 pass through the openings on the key chain connector 8 respectively under the action of the block spring 83. The first through-hole 84 and the second through-hole 85 are provided, and the end of the tail cover 1 is formed with an insertion cavity 11 that matches the end of the key chain connector 8. A snap ring groove 12 is provided on the inner wall of the insertion cavity 11. The end of the key chain connector 8 is inserted into the insertion cavity 11 so that the snap protrusion 822 is snapped into the snap ring groove 12. The key chain connector 8 connected to the end of the tail cover 1 is used to cooperate with the key rack 7 to connect items such as ropes, and is also used to hang the combination lock on a backpack for easy carrying, and the key chain connector The connecting piece 8 is connected to the tail cover 1 by snapping the snap-fit ​​protrusion 822 into the snap-fit ​​ring groove 12, which makes the key connecting piece 8 rotatable relative to the tail cover 1 and convenient for use during connection. It also facilitates the assembly and disassembly of the key chain connecting piece 8 and the tail cover 1, better meeting the demand for quick operation during use. When the key chain connecting piece 8 needs to be removed from the tail cover 1, the two pressing protrusions 821 are pressed at the same time to drive the two sliding blocks 82 to slide inward in the sliding cavity 81 and compress the block spring 83. The sliding block 82 drives the locking protrusion 822 to slide inward and exit the locking ring groove 12, so that the key chain connector 8 can be removed from the tail cover 1. When the key chain connector 8 needs to be installed, the end of the key chain is inserted into the plug-in cavity 11 so that the inner wall of the plug-in cavity 11 squeezes the locking protrusion 822 to slide inward and compress the locking block spring 83. When the locking protrusion 822 reaches the position of the locking ring groove 12, it is locked into the locking ring groove 12 under the action of the locking block spring 83, thereby realizing the installation of the key chain connector 8.

[0028] In addition, the plug-in cavity 11 and the sliding cavity 81 are respectively provided with a third magnet 13 and a fourth magnet 86. When the end of the key chain connector 8 is inserted into the plug-in cavity 11, the third magnet 13 and the fourth magnet 86 are attracted, and the first magnet 44 and the second magnet 45 are attracted to each other, which enhances the stability of the key chain connector 8 when connected to the tail cover 1, and also provides a guiding effect when the end of the key chain connector 8 is inserted into the plug-in cavity 11, making the installation operation of the key chain connector 8 faster.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A magnetic combination lock, comprising a tail cover (1), a support rack (2), a reset spring (3), a combination assembly (4), a code changing assembly (5), a head cover (6) and a key rack (7), wherein the combination assembly (4) comprises a combination wheel (41) and a code changing wheel (42) which are passed through the support rack (2), the code changing assembly (5) comprises a code changing main pushing wheel (51) and a code changing auxiliary pushing wheel (52) which are passed through the support rack (2), the head cover (6) is fixedly connected to the code changing auxiliary pushing wheel (52), and a plurality of limiting teeth (21) are formed on the peripheral side surface of the support rack (2), characterized in that: The password assembly (4) further includes a magnet fixing wheel (43), the inner circumferential surface of the magnet fixing wheel (43) is provided with a first limiting groove (431) matching the limiting tooth (21), the magnet fixing wheel (43) is passed through the support rack (2) and is located on one side of the code changing wheel (42), and a plurality of first magnets (44) and second magnets (45) corresponding to each other are respectively embedded on the surface opposite to the code changing wheel (42) and the magnet fixing wheel (43), the reset spring (3) is passed through the support rack (2) and abuts against the magnet fixing wheel (43) at the rear end, the first magnet (44) and the second magnet (45) are attracted to keep the magnet fixing wheel (43) and the code changing wheel (42) against each other, so that the limiting tooth (21) is inserted into the first limiting groove (431).

2. The magnetic combination lock according to claim 1, characterized in that: A plurality of linkage grooves (411) are formed on the port of the cipher wheel (41), a plurality of linkage teeth (421) are formed on the outer circumferential surface of the code changing wheel (42), which match the linkage grooves (411) and are inserted into the plurality of linkage grooves (411) one by one, and a second limiting groove (422) is formed on the inner circumferential surface of the code changing wheel (42), which matches the limiting teeth (21).

3. The magnetic combination lock according to claim 2, characterized in that: The code changing wheel (42) and the magnet fixing wheel (43) are located inside the cipher wheel (41), and a bearing (46) is provided between the cipher wheel (41) and the magnet fixing wheel (43).

4. The magnetic combination lock according to claim 3, characterized in that: A third limiting groove (511) matching the limiting tooth (21) is provided on the inner circumference of the main code-changing push wheel (51), and the limiting tooth (21) is retained in the third limiting groove (511). A guide inclined surface (512) is formed on the surface of the main code-changing push wheel (51) facing the main code-changing push wheel (51). The code-changing auxiliary push wheel (52) is rotatably arranged on the support rack (2) through a snap buckle, and a guide column (521) is formed on the code-changing auxiliary push wheel (52) and abuts against the guide inclined surface (512).

5. The magnetic combination lock according to claim 1, characterized in that: The end of the tail cover (1) is connected to a keychain connector (8).

6. The magnetic combination lock according to claim 5, characterized in that: A sliding cavity (81) is provided on the end surface of the keychain connector (8), two sliding blocks (82) are symmetrically arranged in the sliding cavity (81), a block spring (83) is provided between the two sliding blocks (82), a pressing protrusion (821) and a snap-on protrusion (822) are formed on the outer surface of the sliding block (82), and the pressing protrusion (821) and the snap-on protrusion (822) respectively pass through the first through-hole (84) and the second through-hole (85) provided on the keychain connector (8) under the action of the block spring (83), and a plug-in cavity (11) matching the end of the keychain connector (8) is formed at the end of the tail cover (1), and a snap-on ring groove (12) is provided on the inner wall of the plug-in cavity (11), and the end of the keychain connector (8) is inserted into the plug-in cavity (11) so that the snap-on protrusion (822) is snap-on into the snap-on ring groove (12).

7. The magnetic combination lock according to claim 6, characterized in that: A third magnet (13) and a fourth magnet (86) are respectively provided in the plug-in cavity (11) and the sliding cavity (81); when the end of the keychain connector (8) is inserted into the plug-in cavity (11), the third magnet (13) and the fourth magnet (86) are attracted.

Images