Unlocking mechanism of single-hole electronic lock

Abstract

A single-hole electronic lock unlocking mechanism comprises a key assembly and a lock cylinder assembly, the key assembly comprises a key shell, a code recognition coil is fixedly installed at the front end of the key shell, a key head is fixedly installed in the center of the code recognition coil, and an electromagnet, an unlocking controller and a battery are fixedly installed in the key shell; the lock cylinder assembly comprises a lock cylinder inner container, a chip is installed at the rear end of the lock cylinder inner container, an insertion hole with the rear end open is formed in the key head, an iron core of the electromagnet is coaxially inserted into the insertion hole, and magnetic steel is fixedly installed at the front end of the iron core of the electromagnet. A pin hole extending in the radial direction is formed in the lock cylinder inner container, a spring and a magnetic conduction pin which are arranged inside and outside are installed in the pin hole, the outer circle face of the lock cylinder inner container is sleeved with a lock cylinder outer sleeve rotating in the circumferential direction, and a lock hole corresponding to the pin hole is formed in the lock cylinder outer sleeve. In the unlocking process, the iron core of the electromagnet is not stressed, the iron core of the electromagnet is prevented from being deformed or broken, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to an electronic lock, in particular to a single-hole electronic lock unlocking mechanism. Background Art

[0002] With the continuous injection of high and new technologies into mechanical locks, the security functions of locks have been fully extended and expanded. Electronic locks have become an indispensable component in today's security systems with high confidentiality levels, and their status and role cannot be replaced by any mechanical locks.

[0003] Chinese Patent CN211313686U discloses an electronic identification unlocking key, which includes a key housing. A support frame is fixedly installed at the top of the key housing, and an annular code reader is fixedly installed at the top of the support frame. An unlocking shaft that cooperates with the lock core at the top is fixedly installed inside the support frame. An unlocking shaft outer sleeve that rotates circumferentially and cooperates with the outer sleeve of the lock core at the top is sleeved outside the unlocking shaft. The top of the unlocking shaft and the top of the unlocking shaft outer sleeve pass through the central hole of the annular code reader. Two radially symmetrically arranged locking holes are provided at the bottom of the unlocking shaft outer sleeve. An electromagnet is installed inside the support frame on one side of the unlocking shaft outer sleeve, and the iron core of the electromagnet is inserted into the locking hole. An unlocking controller is installed inside the key housing. The code reader is connected to the signal input end of the unlocking controller, and the electromagnet is connected to the signal output end of the unlocking controller. During the unlocking operation, the unlocking shaft is inserted into the lock core and the unlocking shaft outer sleeve is inserted into the outer sleeve of the lock core. At this time, the unlocking shaft is circumferentially fixed to the lock core, and the unlocking shaft outer sleeve is circumferentially fixed to the outer sleeve of the lock core. The code reader reads the annular code on the lock and transmits the unlocking signal to the unlocking controller. The unlocking controller controls the electromagnet to attract the iron core, and the iron core of the electromagnet withdraws from the locking hole. The unlocking shaft and the unlocking shaft outer sleeve are released from the locked state. Rotating the key housing, the unlocking shaft outer sleeve is still circumferentially fixed to the outer sleeve of the lock core, and the unlocking shaft drives the lock core to rotate to complete the unlocking process.

[0004] This kind of electronic key has the following problems: During the unlocking process, due to electronic failures or key mismatches, etc., the iron core of the electromagnet fails to smoothly withdraw from the locking hole, and the user cannot discover and continue to rotate the key. The electrolytic unlocking shaft outer sleeve generates a lateral force on the iron core of the magnet, causing the iron core of the electromagnet to deform or break, and the electronic key is scrapped. Summary of the Invention

[0005] The utility model is to solve the above technical problems and provides a single-hole electronic lock unlocking mechanism. During the unlocking process, the iron core of the electromagnet is not stressed, avoiding deformation or breakage of the iron core of the electromagnet and prolonging the service life.

[0006] The technical solution of the utility model is:

[0007] A single-hole electronic lock unlocking mechanism includes a key assembly and a lock core assembly. The key assembly includes a key housing, an identification code coil is fixedly installed at the front end of the key housing, a key head is fixedly installed at the center of the identification code coil, an electromagnet, an unlocking controller and a battery are fixedly installed in the key housing. The signal output end of the identification code coil is connected to the signal input end of the unlocking controller, and the control signal input end of the electromagnet is connected to the control signal input end of the unlocking controller; the lock core assembly includes a lock core inner liner, a code piece is installed at the rear end of the lock core inner liner. The special feature is that: a jack with an open rear end is provided in the key head, the iron core of the electromagnet is coaxially inserted into the jack, and a magnetic steel is fixedly installed at the front end of the iron core of the electromagnet; a radially extending pin hole is provided on the lock core inner liner, a spring and a magnetic conduction pin arranged inside and outside are installed in the pin hole, a lock core outer sleeve that rotates circumferentially is sleeved on the outer circular surface of the lock core inner liner, and a lock hole corresponding to the pin hole is provided on the lock core outer sleeve.

[0008] Further, the key housing is composed of two split key housing parts that are buckled to each other, and the identification code coil is clamped between the two split key housing parts.

[0009] Further, a fixing block is fixedly installed in the identification code coil, and the key head is fixedly installed on the fixing block to improve the installation structural strength of the key head.

[0010] Further, the edges and corners of the magnetic steel are smoothly transitioned to prevent the magnetic steel from getting stuck when moving in the jack of the key head.

[0011] Further, a convex platform is provided at the rear end of the lock core inner liner, and the code piece is sleeved on the outer circular surface of the convex platform.

[0012] The beneficial effects of the present invention are:

[0013] Since a jack with an open rear end is provided in the key head, the iron core of the electromagnet is coaxially inserted into the jack, and a magnetic steel is fixedly installed at the front end of the iron core of the electromagnet; a radially extending pin hole is provided on the lock core inner liner, a spring and a magnetic conduction pin arranged inside and outside are installed in the pin hole, a lock core outer sleeve that rotates circumferentially is sleeved on the outer circular surface of the lock core inner liner, and a lock hole corresponding to the pin hole is provided on the lock core outer sleeve. When unlocking, the key head is inserted into the lock core inner liner. At this time, the code piece is in contact with the identification code coil, and the identification code coil collects the code piece information and transmits it to the unlocking controller. After the unlocking controller correctly identifies the code piece information, it transmits a start signal to the electromagnet. The iron core of the electromagnet drives the magnetic steel to extend forward. At this time, the magnetic steel and the magnetic conduction pin are radially aligned. The magnetic conduction pin approaches the magnetic steel against the spring force and disengages from the lock hole under the magnetic action of the magnetic steel, unlocking the lock core inner liner. Rotating the key housing, the key head drives the lock core inner liner to rotate circumferentially to complete the unlocking operation. During the unlocking process, the iron core of the electromagnet is not stressed, avoiding deformation or breakage of the iron core of the electromagnet and extending the service life. Description of the Drawings

[0014] Figure 1 is a schematic structural view of the present utility model;

[0015] Figure 2 is Figure 1 a schematic structural view of the key assembly in

[0016] Figure 3 is Figure 1 a schematic structural view of the lock core assembly in

[0017] In the figure: 1 - key assembly, 2 - lock core assembly, 3 - key housing, 4 - code recognition coil, 5 - fixing block, 6 - key head, 7 - jack, 8 - electromagnet, 9 - unlocking controller, 10 - battery, 11 - magnetic steel, 12 - lock core inner liner, 13 - boss, 14 - code chip, 15 - pin hole, 16 - spring, 17 - magnetic conduction pin, 18 - lock core outer sleeve, 19 - lock hole. Specific embodiments

[0018] As Figures 1 - 3 shown, a single - hole electronic lock unlocking mechanism includes a key assembly 1 and a lock core assembly 2. The key assembly 1 includes a key housing 3, and the key housing 3 is composed of two split key housings 3 that are buckled to each other. A code recognition coil 4 is fixedly installed at the front end of the key housing 3. The code recognition coil 4 is clamped between the two split key housings 3. A fixing block 5 is fixedly installed inside the code recognition coil 4. A key head 6 is fixedly installed at the center of the fixing block 5. A jack 7 with an open rear end is provided inside the key head 6. An electromagnet 8, an unlocking controller 9 and a battery 10 are fixedly installed inside the key housing 3. The iron core of the electromagnet 8 is coaxially inserted into the jack 7. A magnetic steel 11 is fixedly installed at the front end of the iron core of the electromagnet 8, and the edges of the magnetic steel 11 are smoothly transitioned. The signal output end of the code recognition coil 4 is connected to the signal input end of the unlocking controller 9, and the control signal input end of the electromagnet 8 is connected to the control signal input end of the unlocking controller 9. The lock core assembly 2 includes a lock core inner liner 12. A boss 13 is provided at the rear end of the lock core inner liner 12. A code chip 14 is fixedly installed on the outer circumferential surface of the boss 13. A radially extending pin hole 15 is provided on the lock core inner liner 12. A spring 16 and a magnetic conduction pin 17 are arranged inside and outside in the pin hole 15. A lock core outer sleeve 18 that rotates circumferentially is sleeved on the outer circumferential surface of the lock core inner liner 12. A lock hole 19 corresponding to the pin hole 15 is provided on the lock core outer sleeve 18.

[0019] The working principle of the present utility model is: When locked: The pin hole 15 and the lock hole 19 are aligned, and the magnetic conduction pin 17 is inserted into the lock hole 19 under the elastic force of the spring 16 to lock the lock core inner liner 12.

[0020] When unlocking: The key head 6 is inserted into the lock core inner liner 12. At this time, the code chip 14 is in contact with the code recognition coil 4. The code recognition coil 4 collects the information of the code chip 14 and transmits it to the unlocking controller 9. After the unlocking controller 9 correctly identifies the information of the code chip 14, it transmits a start signal to the electromagnet 8. The iron core of the electromagnet 8 drives the permanent magnet 11 to protrude forward. At this time, the permanent magnet 11 and the magnetic conduction pin 17 are radially aligned. Under the magnetic action of the permanent magnet 11, the magnetic conduction pin 17 overcomes the elastic force of the spring 16 and approaches the permanent magnet 11 and disengages from the lock hole 19, unlocking the lock core inner liner 12. Rotate the key housing 3, and the key head 6 drives the lock core inner liner 12 to rotate circumferentially to complete the unlocking operation.

[0021] The above are only specific embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A single-hole electronic lock unlocking mechanism, comprising a key assembly and a lock core assembly, wherein the key assembly comprises a key housing, a code recognition coil is fixedly installed at the front end of the key housing, a key head is fixedly installed at the center of the code recognition coil, an electromagnet, an unlocking controller and a battery are fixedly installed in the key housing, a signal output end of the code recognition coil is connected to a signal input end of the unlocking controller, and a control signal input end of the electromagnet is connected to a control signal input end of the unlocking controller; the lock core assembly comprises a lock core liner, a code chip is installed at the rear end of the lock core liner, and the characteristics are: A socket with an open rear end is provided in the key head, the iron core of the electromagnet is coaxially inserted into the socket, and a magnet is fixedly installed at the front end of the iron core of the electromagnet; a radially extending pin hole is provided on the lock core inner shell, and a spring and a magnetic pin arranged inside and outside are installed in the pin hole; a circumferentially rotating lock core outer shell is mounted on the outer circumference of the lock core inner shell, and a lock hole corresponding to the pin hole is provided on the lock core outer shell.

2. The single-hole electronic lock unlocking mechanism according to claim 1, characterized in that: The key shell is composed of two buckled key shell parts, and the identification coil is clamped between the two key shell parts.

3. The single-hole electronic lock unlocking mechanism according to claim 1, characterized in that: A fixing block is fixedly installed in the code recognition coil, and the key head is fixedly installed on the fixing block.

4. The single-hole electronic lock unlocking mechanism according to claim 1, characterized in that: The edges and corners of the magnetic steel are smoothly transitioned.

5. The single-hole electronic lock unlocking mechanism according to claim 1, characterized in that: A boss is arranged at the rear end of the lock core inner shell, and the code piece is sleeved on the outer circular surface of the boss.

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