Electronic coded lock with detachable front shell and front shell detaching tool thereof

Abstract

The utility model discloses an electronic coded lock with a detachable front shell and a front shell detaching tool thereof. The electronic coded lock comprises a rear seat, the front shell and a lock cylinder shaft, the front shell is rotatably arranged in front of the rear seat; the lock cylinder shaft is rotatably arranged in the rear seat in a penetrating mode, the front end of the lock cylinder shaft is located in front of the rear seat, the rear end of the lock cylinder shaft penetrates through the rear seat and extends to the rear portion of the rear seat, a connecting seat is arranged at the front end of the lock cylinder shaft in a protruding mode, and the rear end of the lock cylinder shaft is connected with a spring bolt. The front shell is connected with the connecting base, an electric control cavity used for containing the electric control assembly is formed between the front shell and the connecting base, and the lock cylinder shaft is further connected with a locking assembly. The front shell and the connecting base are connected through a connecting assembly. The front shell and the connecting base are connected through the connecting assembly, when the state of the connecting assembly changes, the connection between the front shell and the connecting base can be removed, and therefore the front shell can be taken down from the connecting base, and then the electric control assembly on the connecting base can be maintained or the battery can be replaced easily and conveniently. And time can be effectively saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic coded lock field, concretely relates to a front shell can dismantle electronic coded lock and front shell dismounting tool thereof BACKGROUND

[0002] Electronic coded lock is a kind of electronic product that controls the closure of mechanical switch by password input to control circuit or chip (access control system), to complete the task of unlocking and locking;It has many types, simple circuit products and high-performance products based on chip;The electronic coded lock widely used now is based on chip, realized by programming;Electronic lock in security technology field, the electronic coded lock with alarm function replaces traditional mechanical coded lock, overcomes the shortcomings of mechanical coded lock, such as less password quantity and poor safety performance, makes coded lock greatly improve in technology and performance.

[0003] The electronic coded lock on the market can be divided into key password lock, card password lock, fingerprint password lock and face password lock according to the password input method, and the field of application of electronic coded lock also starts gradually developing in many directions, and the electronic coded lock of department also starts to be used on some cabinet, and the electronic coded lock used on cabinet is generally designed to be small in size, so that large-capacity battery cannot be arranged in the electronic coded lock, and the battery in the electronic coded lock needs to be replaced or charged every time.

[0004] As disclosed in Chinese patent application with patent number ZL201220435364.9: "an electronic coded lock, including upper cover and bottom cover, bottom cover is installed at the lower end of upper cover, the upper surface of upper cover is installed with digital key panel, the left side of digital key panel is arranged with a indicating lamp vertically and side by side, the back of upper cover is installed with control circuit board at the position corresponding to indicating lamp, the outer circle of upper cover is evenly arranged with a plurality of arc concaves along the circumference, the inner side of the outer circle of bottom cover is evenly opened with a plurality of locking notches along the circumference, the upper side of locking notch is installed with fixed mounting card plate.

[0005] But including the scheme recorded in the above patent, the existing small electronic combination lock on the market has a problem, that is, the installation and replacement of the battery is troublesome, the battery of these electronic combination locks is completely built-in in the shell, if you want to replace the battery, you need to take down the entire electronic combination lock from the door and then disassemble it to replace the battery, another is to set a battery taking and placing opening at the back of the electronic combination lock, but since the opening is set at the back, it also needs to be disassembled from the door when replacing, both of these two ways make the battery replacement process of the existing electronic combination lock become extremely complex and difficult. SUMMARY

[0006] In order to overcome the deficiency that the replacement process of the internal battery of the small electronic combination lock in the prior art is too complex and difficult, the utility model provides an electronic combination lock with a detachable front shell and a front shell dismounting tool.

[0007] The technical scheme for solving the technical problems of the utility model is: an electronic combination lock with a detachable front shell, comprising:

[0008] A rear seat;

[0009] A front shell rotatably arranged in front of the rear seat;

[0010] A lock core shaft rotatably arranged in the rear seat, the front end of the lock core shaft being located in front of the rear seat, the rear end of the lock core shaft extending through the rear seat to the rear of the rear seat, the front end of the lock core shaft being provided with a connecting seat, and the rear end of the lock core shaft being connected with a lock tongue;

[0011] The front shell is connected with the connecting seat, an electric control cavity for accommodating an electric control assembly being formed between the front shell and the connecting seat, a locking assembly being further connected to the lock core shaft, the locking assembly being capable of being locked or unlocked under the control of the electric control assembly, and the locking assembly being capable of acting between the lock core shaft and the rear seat to prevent the lock core shaft from rotating relative to the rear seat;

[0012] The front shell and the connecting seat are connected through a connecting assembly;

[0013] The connecting assembly comprises a connecting pin located on the connecting seat and a connecting groove formed on the front shell, the connecting pin being movably arranged relative to the connecting seat, the connecting pin being capable of changing the position state relative to the front shell by moving, and the connecting pin having at least a first position state and a second position state relative to the front shell;

[0014] When the connecting pin block is in the first position state, the connecting pin can be inserted and matched in the connecting groove, so that the front shell and the connecting seat are connected, and the front shell is prevented from being separated from the connecting seat;

[0015] When the connecting pin is in the second position state, the connecting pin is separated from the connecting groove, so that the front shell is separated from the connecting base.

[0016] Further, the connecting pin is a magnetic body, and the connecting pin can move under the action of a magnetic force to change the position state relative to the front shell.

[0017] Further, the connecting base is provided with a hidden groove, the connecting pin is arranged in the hidden groove and can slide along the hidden groove, when the connecting pin is in the first position state, the connecting pin at least partially extends out of the hidden groove, and when the connecting pin is in the second position state, the connecting pin is completely hidden in the hidden groove.

[0018] Further, the hidden groove is further provided with a reset spring, the reset spring acts between the hidden groove and the connecting pin, so that the connecting pin always has a movement tendency of moving away from the hidden groove to maintain the first position state.

[0019] Further, the connecting base is further provided with a limiting groove, the limiting groove includes a vertical segment arranged axially along the connecting base and a horizontal segment arranged circumferentially along the connecting base, one end of the vertical segment is connected with the horizontal segment, and the other end includes an insertion opening on the upper side of the connecting base, the inner side of the front shell is further provided with a limiting block, the limiting block can enter or separate from the limiting groove through the insertion opening, and the limiting block can move along the limiting groove, when the limiting block moves into the horizontal segment of the limiting groove, the limiting block can interfere with the connecting base to prevent the front shell from being separated from the connecting base.

[0020] Further, the electric control assembly includes a plurality of batteries, the connecting base is further connected with a battery seat in the electric control cavity, one side of the battery seat is further provided with an assembly opening, and the batteries can be inserted into or taken out of the battery seat through the assembly opening.

[0021] Further, the battery seat is further provided with a battery cover plate at the assembly opening, one side of the battery cover plate is hinged with the battery seat, the battery cover plate can be flipped relative to the battery seat to cover the assembly opening or to move away from the assembly opening, and the other side of the battery cover plate is provided with a buckle, the connecting base is further provided with a clamping groove at the assembly opening, and the buckle can be clamped and matched in the clamping groove to prevent the battery cover plate from being flipped to maintain the covering state relative to the assembly opening.

[0022] Further, the locking assembly comprises an electric drive device, the electric drive device is communicated with the electric control assembly, the output shaft of the electric drive device is further connected with a locking block, the rear seat is provided with a locking groove, the locking block can be inserted into the locking groove or withdrawn from the locking groove under the drive of the electric drive device, when the locking block is inserted into the locking groove, the locking block and the rear seat are interfered to prevent the lock core shaft from rotating relative to the rear seat.

[0023] Further, the electric control assembly comprises an electric control board and a display screen, the electric control board is fixedly installed on the connecting seat, and the display screen is connected to the front cover and exposed to the front side of the front cover.

[0024] The utility model also includes a front shell dismounting tool, which is suitable for the electronic code lock, which comprises a shell, a matching groove is formed in the bottom of the shell, the front shell of the electronic code lock can be inserted into the matching groove, a plurality of magnetic blocks are further connected to the shell, and the magnetic blocks are located on the circumferential side of the matching groove, the magnetic blocks can produce a magnetic force with the connecting pin in the electronic code lock, so that the connecting pin moves from the first position state to the second position state.

[0025] The front shell dismounting tool is used for dismounting the front shell of the electronic password lock, and the front shell dismounting tool comprises a tool shell, a connecting seat, a connecting assembly, a front shell dismounting tool, a connecting pin, a reset spring, a hidden groove, a connecting groove, a limiting block, a limiting slot, a front shell and a front cover.

[0026] The unlocking process of the utility model is as follows: after the password is input through the display screen by pressing the password, inputting the fingerprint, swiping the card or swiping the face, etc., the electric control board controls the electric drive device to start, the electric drive device drives the locking block to exit from the locking groove, at this time, the front shell can be rotated, and the front shell drives the lock cylinder shaft to rotate, the lock piece at the rear end of the lock cylinder shaft rotates to leave the lock box in the door frame to complete the unlocking, at this time, the door can be opened.

[0027] The utility model discloses the beneficial effect lies in:

[0028] 1、The front shell and the connecting seat are connected through the connecting assembly, when the state of the connecting assembly changes, the connection between the front shell and the connecting seat can be released, so that the front shell can be taken off from the connecting seat, and then it is very simple to maintain the electric control assembly on the connecting seat or replace the battery, without the need of dismounting the whole lock from the door, time can be effectively saved.

[0029] 2. The connecting pin is made of a magnetic body. It can change its position by interacting with other magnetic bodies, making the state change of the connecting component simpler. Since the magnetic force can be used remotely, the connecting component does not need to be exposed from the front shell, which further improves security and makes the whole electronic combination lock more aesthetically pleasing.

[0030] 3. The connector is specially equipped with a battery holder for installing batteries, and a battery cover is also provided at the assembly port of the battery holder. When replacing the battery, the battery cover can be opened to remove and put in the battery, which further simplifies the battery replacement process.

[0031] 4. It is also equipped with a special tool for disassembling the front shell. A magnetic block is set inside the tool's housing. The magnetic block drives the connecting pin, which further simplifies the disassembly of the front shell. Attached Figure Description

[0032] Figure 1 This is a structural schematic diagram of one embodiment of the present utility model.

[0033] Figure 2 This is an exploded view of Embodiment 1 of this utility model.

[0034] Figure 3 This is a cross-sectional view of the connecting pin in the first position state in Embodiment 1 of this utility model.

[0035] Figure 4 yes Figure 3 Enlarged diagram of point A in the middle.

[0036] Figure 5 yes Figure 3 Enlarged diagram of point B in the middle.

[0037] Figure 6 This is a cross-sectional view of the connecting pin in the second position state in Embodiment 1 of this utility model.

[0038] Figure 7 yes Figure 6 Enlarged diagram of point C in the middle.

[0039] Figure 8 This is a schematic diagram of the front shell structure in Embodiment 1 of this utility model.

[0040] Figure 9 This is a schematic diagram showing the disassembly of the lock cylinder shaft, electronic control components, and locking assembly in Embodiment 1 of this utility model.

[0041] Figure 10 This is a split schematic diagram of the connecting seat, connecting pin, and return spring in Embodiment 1 of this utility model.

[0042] Figure 11Is the split schematic diagram of battery holder and battery cover plate in the embodiment one of the utility model.

[0043] Figure 12 Is the structure schematic diagram of the embodiment two of the utility model.

[0044] Figure 13 Is the cooperation schematic diagram of the embodiment two cooperating to the electronic coded lock in the embodiment one.

[0045] Figure 14 Is the sectional view of the electronic coded lock when the embodiment two and the embodiment one cooperate.

[0046] In the drawing, 1 is back seat, 2 is front shell, 3 is lock core shaft, 4 is connecting seat, 5 is lock bolt, 6 is electric control cavity, 7 is connecting pin, 8 is connecting groove, 9 is hidden groove, 10 is reset spring, 11 is limiting groove, 12 is vertical section, 13 is horizontal section, 14 is insertion port, 15 is limiting block, 16 is battery, 17 is battery holder, 18 is assembly port, 19 is battery cover plate, 20 is buckle, 21 is clamping groove, 22 is electric drive device, 23 is locking block, 24 is locking groove, 25 is electric control board, 26 is display screen, 27 is handle column, 28 is shell, 29 is cooperation groove, 30 is magnetic block. DETAILED DESCRIPTION

[0047] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0048] It should be understood that although the terms upper, middle, lower, top end, one end and the like appear in the present text to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish the elements from each other for the purpose of understanding, and are not used to define any direction or sequence limitation.

[0049] Embodiment one

[0050] In combination Figures 1 to 11The detachable electronic password lock shown in the front shell includes a rear seat 1, a front shell 2 and a lock core shaft 3; the front shell 2 is rotatably arranged in front of the rear seat 1; the lock core shaft 3 is rotatably arranged in the rear seat 1, the front end of the lock core shaft 3 is located in front of the rear seat 1, and the rear end of the lock core shaft 3 extends to the rear of the rear seat 1 through the rear seat 1, the front end of the lock core shaft 3 is provided with a connecting seat 4, and the rear end of the lock core shaft 3 is connected with a lock tongue 5; the front shell 2 is connected with the connecting seat 4, and an electric control cavity 6 for accommodating an electric control assembly is formed between the front shell 2 and the connecting seat 4; a locking assembly is further connected to the lock core shaft 3, and the locking assembly can be locked or unlocked under the control of the electric control assembly; the locking assembly can act on the lock core shaft 3 and the rear seat 1 to prevent the lock core shaft 3 from rotating relative to the rear seat 1; the front shell 2 and the connecting seat 4 are connected through a connecting assembly; the connecting assembly includes a connecting pin 7 located on the connecting seat 4 and a connecting groove 8 opened on the front shell 2, the connecting pin 7 is movably arranged relative to the connecting seat 4, the connecting pin 7 can change the position state relative to the front shell 2 by moving, and the connecting pin 7 has at least a first position state and a second position state relative to the front shell 2; when the connecting pin 7 is in the first position state, the connecting pin 7 can be inserted and matched in the connecting groove 8 to connect the front shell 2 and the connecting seat 4, and prevent the front shell 2 from being separated from the connecting seat 4; when the connecting pin 7 is in the second position state, the connecting pin 7 is separated from the connecting groove 8 to disconnect the front shell 2 and the connecting seat 4, and the front shell 2 can be separated from the connecting seat 4.

[0051] In this embodiment, the connecting pin 7 is a magnetic body, and the connecting pin 7 can move under the action of magnetic force to change the position state relative to the front shell 2.

[0052] Combined Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 10 In this embodiment, the connecting seat 4 is provided with a hidden groove 9, the connecting pin 7 is arranged in the hidden groove 9 and can slide along the hidden groove 9, when the connecting pin 7 is in the first position state, the connecting pin 7 at least partially extends out of the hidden groove 9, and when the connecting pin 7 is in the second position state, the connecting pin 7 is completely hidden in the hidden groove 9.

[0053] Combined Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 10As shown, in the present embodiment, a reset spring 10 is further arranged in the hidden groove 9, and acts between the hidden groove 9 and the connecting pin 7, so that the connecting pin 7 always has a movement tendency of moving away from the hidden groove 9 to maintain the first position state.

[0054] In combination Figure 8 and Figure 10 As shown, in the present embodiment, a limiting groove 11 is further arranged in the connecting seat 4, and includes a vertical segment 12 arranged axially along the connecting seat 4 and a horizontal segment 13 arranged circumferentially along the connecting seat 4, one end of the vertical segment 12 is communicated with the horizontal segment 13, and the other end includes an insertion opening 14 arranged on the upper side of the connecting seat 4. The inner side of the front shell 2 further protrudes a limiting block 15, which can enter or escape from the limiting groove 11 through the insertion opening 14, and can move along the limiting groove 11. When the limiting block 15 moves into the horizontal segment 13 of the limiting groove 11, the limiting block 15 can interfere with the connecting seat 4 to prevent the front shell 2 from escaping from the connecting seat 4.

[0055] In combination Figure 9 and Figure 11 As shown, in the present embodiment, the electric control assembly includes a plurality of batteries 16, and the connecting seat 4 further connects a battery seat 17 arranged in the electric control cavity 6. One side of the battery seat 17 further has an assembly opening 18 arranged therein. The batteries 16 can be inserted into or taken out of the battery seat 17 through the assembly opening 18.

[0056] As shown in Figure 11 , in the present embodiment, the battery seat 17 further has a battery cover plate 19 arranged at the assembly opening 18. One side of the battery cover plate 19 is hingedly connected with the battery seat 17, and the battery cover plate 19 can be flipped relative to the battery seat 17 to cover the assembly opening 18 or to move away from the assembly opening 18. The other side of the battery cover plate 19 protrudes a buckle 20, and the connecting seat 4 further has a clamping groove 21 arranged at the assembly opening 18. The buckle 20 can be clamped and matched in the clamping groove 21 to prevent the battery cover plate 19 from being flipped and to maintain the covering state relative to the assembly opening 18.

[0057] As shown in Figure 11 , in the present embodiment, the side of the battery cover plate 19 protruding the buckle 20 further protrudes a plurality of handle columns 27 forward. The handle columns 27 can be gripped to pull the battery cover plate 19 to flip it.

[0058] In combination Figure 3 , Figure 5 , Figure 6 and Figure 9As shown, the locking assembly in the embodiment comprises an electric drive device 22 which is in communication connection with the electric control assembly. An output shaft of the electric drive device 22 is further transmissionally connected with a locking block 23. The rear seat 1 is provided with a locking groove 24. The locking block 23 can be inserted into or withdrawn from the locking groove 24 under the driving of the electric drive device 22. When the locking block 23 is inserted into the locking groove 24, the locking block 23 interferingly cooperates with the rear seat 1 to prevent the lock core shaft 3 from rotating relative to the rear seat 1.

[0059] In combination Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the electric control assembly in the embodiment comprises an electric control board 25 and a display screen 26. The electric control board 25 is fixedly installed on the connecting seat 4. The display screen 26 is connected to the front cover and exposed to the front side of the front cover.

[0060] The front shell 2 in the embodiment is disassembled as follows: when the electronic password lock needs to be replaced with a battery 16 or the electric control assembly needs to be maintained, the front shell 2 is fitted on the electronic password lock by aligning the fitting groove 29 on the front shell 2 disassembly tool with the front shell 2 of the electronic password lock, so that the front shell 2 of the electronic password lock is inserted into the fitting groove 29, then the front shell 2 disassembly tool is rotated by a certain angle so that the magnetic block 30 thereon is aligned with the connecting pin 7, at this time the connecting pin 7 will be retracted into the hidden groove 9 under the action of the magnetic force to overcome the action of the return spring 10, so that the connecting pin 7 is switched from the first position state to the second position state relative to the connecting groove 8, at this time the connecting pin 7 is withdrawn from the connecting groove 8, the interference fit between the connecting pin 7 and the front shell 2 is released, at this time the front shell 2 can be rotated relative to the connecting seat 4 by rotating the front shell 2, in the rotating process the limiting block 15 on the front shell 2 will move from the transverse section 13 to the vertical section 12 of the limiting groove 11, then the front shell 2 is pulled away from the connecting seat 4, so that the limiting block 15 slides along the vertical section 12 of the limiting groove 11 and finally is separated from the limiting groove 11 through the insertion opening 14, at this time the front shell 2 is separated from the connecting seat 4, the electric control assembly in the electric control cavity 6 is exposed, then the electric control assembly can be maintained or the battery 16 can be replaced, when replacing the battery 16, the battery cover plate 19 is first turned over so that the assembly opening 18 of the battery seat 17 is opened, then the original battery 16 can be removed through the assembly opening 18 and replaced with a new battery 16, after the electric control assembly is maintained or the battery 16 is replaced, the front shell 2 disassembly tool with the front cover connected thereto is fitted on the connecting seat 4 again, in the fitting process, it is ensured that the limiting block 15 can enter the limiting groove 11 through the insertion opening 14, then the front shell 2 is rotated by a certain angle so that the limiting block 15 reenters the transverse section 13 of the limiting groove 11, finally the front shell 2 disassembly tool can be removed from the front shell 2, so that the connecting pin 7 is retracted from the hidden groove 9 under the action of the return spring 10 and is fitted into the connecting groove 8, so that it is restored from the second position state to the first position state.

[0061] The unlocking process of the embodiment is as follows: after the password is input by pressing the password on the display screen 26, inputting the fingerprint, swiping the card or the face, etc., the electric control board 25 controls the electric drive device 22 to start, the electric drive device 22 drives the locking block 23 to withdraw from the locking groove 24, at this time the front shell 2 can be rotated, the front shell 2 drives the lock cylinder shaft 3 to rotate, the lock piece at the rear end of the lock cylinder shaft 3 rotates away from the lock box in the door frame to complete the unlocking, at this time the door can be opened.

[0062] The advantage of the embodiment is that the electronic password lock is not only compact in structure, but also the front shell can be disassembled, so that the maintenance of the electric control assembly and the replacement of the battery in the electronic password lock are very convenient.

[0063] Embodiment two

[0064] Combining Figures 12 to 14 The embodiment is a front shell dismounting tool for dismounting the front shell of the electronic code lock in the above embodiment one;

[0065] In the embodiment, the front shell 2 dismounting tool further comprises a shell 28, a cooperation groove 29 is formed in the bottom of the shell 28, the front shell 2 of the electronic code lock can be inserted and cooperated into the cooperation groove 29, a plurality of magnetic blocks 30 are connected on the shell 28, and the magnetic blocks 30 are located on the circumferential side of the cooperation groove 29, the magnetic blocks 30 can generate magnetic force with the connecting pin 7 in the electronic code lock, so that the connecting pin 7 is moved from the first position state to the second position state.

[0066] The remaining structure, method and advantages of the embodiment are consistent with the above embodiment one, and will not be described here.

[0067] The above specific embodiments are only explanations of the utility model, and are not limitations of the utility model, and the person skilled in the art can make modifications without creative contribution according to the needs after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A front shell detachable electronic combination lock, comprising: a rear seat (1); a front shell (2) rotatably arranged in front of the rear seat (1); a lock core shaft (3) rotatably arranged in the rear seat (1), the front end of the lock core shaft (3) being located in front of the rear seat (1), the rear end of the lock core shaft (3) extending through the rear seat (1) to the rear of the rear seat (1), the front end of the lock core shaft (3) being provided with a connecting seat (4), and the rear end of the lock core shaft (3) being connected with a lock tongue (5); the front shell (2) being connected with the connecting seat (4), and an electric control cavity (6) for accommodating an electric control assembly being formed between the front shell (2) and the connecting seat (4), and a locking assembly being further connected to the lock core shaft (3), the locking assembly being capable of being locked or unlocked under the control of the electric control assembly, and the locking assembly being capable of acting between the lock core shaft (3) and the rear seat (1) to prevent the lock core shaft (3) from rotating relative to the rear seat (1); characterized in that: the front shell (2) and the connecting seat (4) are connected through a connecting assembly; the connecting assembly comprises a connecting pin (7) arranged on the connecting seat (4) and a connecting groove (8) formed in the front shell (2), the connecting pin (7) being movably arranged relative to the connecting seat (4), the connecting pin (7) being capable of changing position state relative to the front shell (2) by moving, and the connecting pin (7) having at least a first position state and a second position state relative to the front shell (2); when the connecting pin (7) is in the first position state, the connecting pin (7) is capable of being inserted and fitted in the connecting groove (8) to connect the front shell (2) and the connecting seat (4), and prevent the front shell (2) from being separated from the connecting seat (4); when the connecting pin (7) is in the second position state, the connecting pin (7) is separated from the connecting groove (8) to disconnect the front shell (2) and the connecting seat (4), and the front shell (2) is capable of being separated from the connecting seat (4).

2. The electronic combination lock of claim 1, wherein: the connecting pin (7) is a magnetic body, and the connecting pin (7) is capable of moving under the action of magnetic force to change position state relative to the front shell (2).

3. The electronic combination lock of claim 2, wherein: the connecting seat (4) is provided with a hidden groove (9), the connecting pin (7) is arranged in the hidden groove (9) and is capable of sliding along the hidden groove (9), when the connecting pin (7) is in the first position state, the connecting pin (7) at least partially extends out of the hidden groove (9), and when the connecting pin (7) is in the second position state, the connecting pin (7) is completely hidden in the hidden groove (9).

4. The electronic combination lock of claim 3, wherein: a return spring (10) is further arranged in the hidden groove (9) and acts between the hidden groove (9) and the connecting pin (7) to make the connecting pin (7) always have a movement tendency of moving away from the hidden groove (9) to maintain the first position state.

5. The electronic combination lock of claim 1, wherein: The connecting seat (4) is further provided with a limiting groove (11), the limiting groove (11) comprises a vertical section (12) which is axially arranged on the connecting seat (4) and a horizontal section (13) which is circumferentially arranged on the connecting seat (4), one end of the vertical section (12) is communicated with the horizontal section (13), and the other end of the vertical section (12) is provided with an insertion opening (14) on the upper side of the connecting seat (4), the inner side of the front shell (2) is further provided with a limiting block (15), the limiting block (15) can enter or exit the limiting groove (11) through the insertion opening (14), the limiting block (15) can move along the limiting groove (11), when the limiting block (15) moves to the horizontal section (13) of the limiting groove (11), the limiting block (15) can interfere with the connecting seat (4) to prevent the front shell (2) from being separated from the connecting seat (4).

6. The electronic combination lock of claim 1, wherein: The electric control assembly comprises a plurality of batteries (16), the connecting seat (4) is further provided with a battery seat (17) which is arranged in the electric control cavity (6), one side of the battery seat (17) is further provided with an assembly opening (18), the battery (16) can be inserted into or taken out of the battery seat (17) through the assembly opening (18).

7. The electronic combination lock of claim 6, wherein: The battery seat (17) is further provided with a battery cover plate (19) which is arranged at the assembly opening (18), one side of the battery cover plate (19) is hingedly connected with the battery seat (17), the battery cover plate (19) can be flipped relative to the battery seat (17) so that the battery cover plate (19) covers the assembly opening (18) or the battery (16) is away from the assembly opening (18), the other side of the battery cover plate (19) is further provided with a buckle (20), the connecting seat (4) is further provided with a clamping groove (21) which is arranged at the assembly opening (18), the buckle (20) can be clamped and matched in the clamping groove (21) to prevent the battery cover plate (19) from being flipped and to maintain the covering state relative to the assembly opening (18).

8. The electronic combination lock of claim 1, wherein: The locking assembly comprises an electric drive device (22), the electric drive device (22) is communicatively connected with the electric control assembly, the output shaft of the electric drive device (22) is further provided with a locking block (23), the rear seat (1) is provided with a locking groove (24), the locking block (23) can be inserted into or taken out of the locking groove (24) under the driving of the electric drive device (22), when the locking block (23) is clamped and matched in the locking groove (24), the locking block (23) interferes with the rear seat (1) to prevent the lock cylinder shaft (3) from rotating relative to the rear seat (1).

9. The electronic combination lock with a detachable front shell according to claim 1, characterized in that: The electric control assembly comprises an electric control board (25) and a display screen (26), the electric control board (25) is fixedly installed on the connecting seat (4), and the display screen (26) is connected to the front cover and exposed on the front side of the front cover.

10. A front case dismounting tool characterized by: The electronic coded lock is suitable for the electronic coded lock as claimed in any one of claims 2-9, comprising a shell (28), a bottom of the shell (28) is provided with a matching groove (29), a front shell (2) of the electronic coded lock can be inserted into the matching groove (29), a plurality of magnetic blocks (30) are connected to the shell (28), and the magnetic blocks (30) are located on the circumferential side of the matching groove (29), the magnetic blocks (30) can produce magnetic force with a connecting pin (7) in the electronic coded lock, so that the connecting pin (7) moves from a first position state to a second position state.

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