CN111155846B - Magnetoelectric coupling lock cylinder - Google Patents
Magnetoelectric coupling lock cylinder Download PDFInfo
- Publication number
- CN111155846B CN111155846B CN202010056595.8A CN202010056595A CN111155846B CN 111155846 B CN111155846 B CN 111155846B CN 202010056595 A CN202010056595 A CN 202010056595A CN 111155846 B CN111155846 B CN 111155846B
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- Prior art keywords
- hole
- key
- magnetoelectric coupling
- magnetic
- support
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B49/00—Electric permutation locks; Circuits therefor ; Mechanical aspects of electronic locks; Mechanical keys therefor
- E05B49/002—Keys with mechanical characteristics, e.g. notches, perforations, opaque marks
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B19/00—Keys; Accessories therefor
- E05B19/26—Use of special materials for keys
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B35/00—Locks for use with special keys or a plurality of keys ; keys therefor
- E05B35/001—Locks for use with special keys or a plurality of keys ; keys therefor with key identifying function
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- Lock And Its Accessories (AREA)
Abstract
The invention discloses a magnetoelectric coupling lock cylinder, which comprises a bracket and is characterized in that: the middle part of the bracket is provided with a plurality of groups of password identification holes distributed in an array manner, the password identification holes comprise a magnetic source hole, a first transition hole, a second transition hole and a magnetoelectric coupling hole which are sequentially and coaxially distributed from top to bottom, and a key slot is arranged between the first transition hole and the second transition hole; the downthehole permanent magnet that is provided with of magnetism source, the inner in magnetoelectric coupling hole is provided with the giant magnetostriction stick, and the outer end is provided with piezoceramics and piles up, the magnetoelectric coupling lock core still includes the key, be provided with on the key with the magnetic conduction piece of password identification hole one-to-one, the thickness of magnetic conduction piece is the adjustable quantity directly relevant with the password, and when the key inserted when the end in the key slot, every magnetic conduction piece all with the coaxial distribution in password identification hole that corresponds. The magnetoelectric coupling lock core has the characteristics of high reliability and difficulty in cracking.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of coded locks, in particular to a magnetoelectric coupling lock core.
[ background of the invention ]
In the field of combination locks, mechanical and electronic are the two most common types of security lock cylinders.
The mechanical secret lock cylinder has the advantages of high reliability and no maintenance, and has the defect that the change of mechanical friction force can be utilized by unlocking experts, and has a guiding function on cracking passwords, so that the safety of the mechanical secret lock cylinder is limited; the electronic secret lock core has the advantages of simple operation and high password complexity, and has the defect that the electronic secret lock core is easily damaged by malicious mechanics or is interfered maliciously, so the reliability is limited.
In the prior art, a lock cylinder which effectively combines mechanical secrecy and electronic secrecy is not found, and a combination lock which can effectively combine the advantages of the mechanical secrecy lock cylinder and the electronic secrecy lock cylinder is urgently needed in the real life, which is the background of the invention.
[ summary of the invention ]
The invention aims to solve the problems in the prior art and provides a magnetoelectric coupling lock core which has the characteristics of high reliability and difficulty in cracking.
In order to achieve the purpose, the invention provides a magnetoelectric coupling lock core, which comprises a bracket and is characterized in that: the cross section of the support is H-shaped, a plurality of groups of password identification holes distributed in an array mode are formed in the middle of the support, the password identification holes comprise a magnetic source hole, a first transition hole, a second transition hole and a magnetoelectric coupling hole which are sequentially and coaxially distributed from top to bottom, a key slot is formed between the first transition hole and the second transition hole, and the key slot penetrates through the left end and the right end of the support; a permanent magnet is arranged in the magnetic source hole, a giant magnetostrictive rod is arranged at the inner end of the magnetoelectric coupling hole, a piezoelectric ceramic stack is arranged at the outer end of the magnetoelectric coupling hole, the upper end surface of the piezoelectric ceramic stack is abutted and contacted with the lower end surface of the giant magnetostrictive rod, a first gland is arranged at the outer end of the magnetoelectric coupling hole, and the giant magnetostrictive rod and the piezoelectric ceramic stack are tightly pressed by the first gland; a second gland is arranged at the outer end of the magnetic source hole and compresses the permanent magnet in the magnetic source hole; the magnetic-electric coupling lock cylinder further comprises a key, magnetic conductive sheets in one-to-one correspondence to the password identification holes are arranged on the key, the thickness of each magnetic conductive sheet is adjustable and directly related to the password, and when the key is inserted into the key slot to the bottom, each magnetic conductive sheet is coaxially distributed with the corresponding password identification hole.
Preferably, the front end and the rear end of the support are respectively provided with an inner bin cover and an outer bin cover, the inner bin cover, the outer bin cover and the H-shaped support jointly enclose two cavities, the two cavities comprise a first cavity located above the support and a second cavity located below the support, the second gland is located in the first cavity, and the first gland is located in the second cavity.
Preferably, the magnetic conductive sheet of the key is made of pure iron, and the part of the rod body except the magnetic conductive sheet is made of non-magnetic steel.
Preferably, the rod body of the key is divided into an upper rod body and a lower rod body, the magnetic conducting sheet is fixed between the upper rod body and the lower rod body in a pressing mode, and the upper rod body and the lower rod body are fixed in a clamping mode.
Preferably, a control module is further disposed in the second cavity.
Preferably, a slot is formed in the side wall of the magnetoelectric coupling hole, and two poles of leads stacked by piezoelectric ceramics are led out from the slot and connected to a signal input end of the control module.
The invention has the beneficial effects that: the invention provides a lock core based on a brand-new principle based on a magnetoelectric coupling effect, wherein the unlocking of the lock core needs magnetic induction intensity setting of magnetic induction intensity of each independent magnetic circuit by magnetic conductive sheets with specific thickness and arrangement sequence, so that the lock core has a mechanical key form and an electronic password identification process, integrates mechanical reliability and electronic complexity, and has extremely wide market requirements.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a schematic view of an exploded structure of the present invention;
FIG. 2 is a schematic structural view of the stent of the present invention;
FIG. 3 is a left side view of the stand of the present invention;
FIG. 4 is a sectional view A-A of FIG. 3;
FIG. 5 is a cross-sectional view B-B of FIG. 3;
FIG. 6 is an overall cross-sectional view of the present invention;
fig. 7 is a schematic view of the structure of the key of the present invention.
In the figure: 1-bracket, 2-second gland, 3-super magnetostrictive rod, 4-piezoelectric ceramic stack, 5-first gland, 6-outer bin cover, 7-inner bin cover, 8-permanent magnet, 9-key, 101-first cavity, 102-second cavity, 103-key slot, 104-magnetic source hole, 105-magnetoelectric coupling hole, 106-first transition hole, 107-second transition hole, 108-wire slot and 901-magnetic conductive sheet.
[ detailed description ] embodiments
Referring to fig. 1 to 7, the magnetoelectric coupling lock cylinder of the present invention includes a bracket 1, and is characterized in that: the cross section of the support is H-shaped, a plurality of groups of password identification holes distributed in an array mode are arranged in the middle of the support, each password identification hole comprises a magnetic source hole 104, a first transition hole 106, a second transition hole 107 and a magnetoelectric coupling hole 105 which are coaxially distributed from top to bottom, a key slot 103 is arranged between the first transition hole 106 and the second transition hole 107, and the key slot penetrates through the left end and the right end of the support; a permanent magnet 8 is arranged in the magnetic source hole, a giant magnetostrictive rod 3 is arranged at the inner end of the magnetoelectric coupling hole, a piezoelectric ceramic stack 4 is arranged at the outer end of the magnetoelectric coupling hole, the upper end surface of the piezoelectric ceramic stack is abutted against and contacted with the lower end surface of the giant magnetostrictive rod, a first gland 5 is arranged at the outer end of the magnetoelectric coupling hole, and the giant magnetostrictive rod and the piezoelectric ceramic stack are tightly pressed by the first gland; a second gland 2 is arranged at the outer end of the magnetic source hole and compresses the permanent magnet in the magnetic source hole; the magnetic-electric coupling lock cylinder further comprises a key 9, magnetic conductive sheets 901 which correspond to the password identification holes one by one are arranged on the key, the thickness of each magnetic conductive sheet is an adjustable quantity which is directly related to the password, the thickness of each magnetic conductive sheet on each key can be randomly set without influencing each other in practical application, different thicknesses of the magnetic conductive sheets correspond to different magnetic fluxes, and when the key is inserted into the key slot to the bottom, each magnetic conductive sheet is coaxially distributed with the corresponding password identification hole.
The front end and the rear end of the support 1 are respectively provided with an inner bin cover 7 and an outer bin cover 6, the inner bin cover, the outer bin cover and the H-shaped support jointly enclose two cavities, the cavities comprise a first cavity 101 located above the support and a second cavity 102 located below the support, the second gland 2 is located in the first cavity, and the first gland 5 is located in the second cavity.
A control module is also arranged in the second cavity 102; the control module comprises a signal input end for receiving a voltage signal of the piezoelectric ceramic stack 4, and an input interface which is sequentially connected with the signal input end and is provided with a voltage amplifier, a filter, an A/D conversion module and a singlechip controller; the output interface of the singlechip controller is sequentially connected with a relay and an electromagnetic switch actuating mechanism through a lead; the circuit and the electrical components connected by the output interface of the single chip microcomputer controller have the same principle as the electronic coded lock in the prior art, and are not described herein again, and the circuit and the electrical components connected by the input interface of the single chip microcomputer controller are used for receiving and processing the voltage variation generated by the piezoelectric effect of the piezoelectric ceramic stack 4.
A wire groove 108 is formed in the side wall of the magnetoelectric coupling hole, and two poles of leads of the piezoelectric ceramic stack are led out of the wire groove and connected to the signal input end; the type of the singlechip controller is not limited, and the pin number of the singlechip controller and the digit of the register are actually selected according to the digit of the password identification hole and then obtained by outsourcing.
The single-chip microcomputer controller is also connected with a power supply, and the power supply is positioned in the second cavity 102 and used for providing standby and working power supplies for the single-chip microcomputer; and the outer bin cover 6 is also provided with a starting key, and the starting key is connected with the signal input end of the singlechip controller through a lead.
A specific operation of the present invention is described below, wherein the number of the password identification holes is assumed to be 4, and the password identification holes are numbered #1, #2, #3 and #4 from left to right in the view of fig. 6:
when the key 9 is not inserted, because the heights of the key grooves 103 at different code identification holes are the same, the magnetic fluxes emitted by the permanent magnets 8 and respectively passing through the corresponding giant magnetostrictive rods 3 are the same, so that the polarization strengths of the giant magnetostrictive rods 3 in the code identification holes # 1, #2, #3 and #4 are the same, the actual lengths of the giant magnetostrictive rods are the same, when the second gland 2 is locked on the bracket 1 through screws, the locking torques of the screws are the same, the axial pressures borne by the piezoelectric ceramic stacks 4 are the same, the instantaneous voltages generated by the piezoelectric effect of the piezoelectric ceramic stacks 4 are the same, and because the instantaneous voltages are not sustainable, when the second gland is completely locked, the piezoelectric ceramic stacks 4 do not output voltages any more in practice;
when a key 9 is inserted into the key slot 103, a start key is pressed firstly, the single chip microcomputer controller enters an operating state, magnetic flux received by the giant magnetostrictive rod 3 in the #4 password identification hole is reduced to 0 firstly due to the magnetic isolation effect of the rod body of the key 9, so that the length of the giant magnetostrictive rod is shortened to the length without a magnetic field, the axial pressure on the electric ceramic stack 4 corresponding to the #4 password identification hole is reduced, a negative instantaneous output voltage is generated, and the voltage value is set as a zero point after being tested and calibrated; when the key 9 is continuously inserted into the key slot 103, the magnetic conductive sheet at the forefront end of the key 9 enters the region of the #4 password identification hole and gradually reaches the coaxial position of the two, at this time, the magnetic flux received by the giant magnetostrictive rod 3 in the #4 password identification hole reaches a primary peak value, the giant magnetostrictive rod 3 extends to the primary peak value due to the inverse magnetostrictive effect, the electric ceramic stack 4 is subjected to the primary peak value pressure, so that the electric ceramic stack 4 generates a primary peak voltage, the voltage signal is in the mV level, the voltage signal enters the input end of the singlechip controller after the amplification of the voltage amplifier, the filtering of the filter and the conversion of the A/D conversion module, is stored by the singlechip controller and then is compared with a voltage threshold preset in the singlechip controller, if the difference value is within the set difference threshold range, the effective value is determined, the singlechip controller determines that the first magnetic conductive sheet 901 effectively passes through the #4 password identification hole, with the key 9 being inserted into the key slot, the first magnetic conductive plate 901 reaches the peak voltage corresponding to the #3 password identification hole, and the second magnetic conductive plate adjacent to the first magnetic conductive plate 901 is distributed coaxially with the #4 password identification hole, the single chip microcomputer controller needs to determine the peak voltage corresponding to each of the #3 password identification hole and the #4 password identification hole, and so on, when the key 9 is pushed into the key slot completely, the single chip microcomputer controller determines the peak voltage corresponding to each of the four password identification holes.
The invention provides a lock core based on a brand-new principle based on a magnetoelectric coupling effect, wherein the unlocking of the lock core needs magnetic induction intensity setting of magnetic induction intensity of each independent magnetic circuit by magnetic conductive sheets with specific thickness and arrangement sequence, so that the lock core has a mechanical key structure form and an electronic password identification process, integrates mechanical reliability and electronic complexity, and has extremely wide market requirements.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (6)
1. The utility model provides a magnetoelectric coupling lock core, includes the support, its characterized in that: the support is H-shaped, a plurality of groups of password identification holes distributed in an array mode are formed in the middle of the support, the password identification holes comprise a magnetic source hole, a first transition hole, a second transition hole and a magnetoelectric coupling hole which are sequentially and coaxially distributed from top to bottom, a key slot is formed between the first transition hole and the second transition hole, and the key slot penetrates through the left end and the right end of the support; a permanent magnet is arranged in the magnetic source hole, a giant magnetostrictive rod is arranged at the inner end of the magnetoelectric coupling hole, a piezoelectric ceramic stack is arranged at the outer end of the magnetoelectric coupling hole, the upper end surface of the piezoelectric ceramic stack is abutted and contacted with the lower end surface of the giant magnetostrictive rod, a first gland is arranged at the outer end of the magnetoelectric coupling hole, and the giant magnetostrictive rod and the piezoelectric ceramic stack are tightly pressed by the first gland; a second gland is arranged at the outer end of the magnetic source hole and compresses the permanent magnet in the magnetic source hole; the magnetic-electric coupling lock cylinder further comprises a key, magnetic conductive sheets in one-to-one correspondence to the password identification holes are arranged on the key, the thickness of each magnetic conductive sheet is adjustable and directly related to the password, and when the key is inserted into the key slot to the bottom, each magnetic conductive sheet is coaxially distributed with the corresponding password identification hole.
2. The magnetoelectric coupling lock cylinder according to claim 1, wherein: the support is characterized in that an inner bin cover and an outer bin cover are respectively arranged at the front end and the rear end of the support, the inner bin cover, the outer bin cover and the H-shaped support jointly enclose two cavities, the two cavities comprise a first cavity located above the support and a second cavity located below the support, the second gland is located in the first cavity, and the first gland is located in the second cavity.
3. The magnetoelectric coupling lock cylinder according to claim 1, wherein: the magnetic conduction sheet of the key is made of pure iron materials, and the part of the rod body except the magnetic conduction sheet is made of non-magnetic steel materials.
4. The magneto-electrically coupled lock cylinder of claim 3, wherein: the rod body of key divides two down, the magnetic conduction piece is fixed between two upper and lower rod bodies by the pressfitting, and two upper and lower rod bodies joint is fixed.
5. The magnetoelectric coupling lock cylinder according to claim 2, wherein: and a control module is also arranged in the second cavity.
6. The magneto-electrically coupled lock cylinder of claim 5, wherein: and a wire groove is formed in the side wall of the magnetoelectric coupling hole, and two poles of wires stacked by piezoelectric ceramics are led out from the wire groove and connected to a signal input end of the control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010056595.8A CN111155846B (en) | 2020-01-18 | 2020-01-18 | Magnetoelectric coupling lock cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010056595.8A CN111155846B (en) | 2020-01-18 | 2020-01-18 | Magnetoelectric coupling lock cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111155846A CN111155846A (en) | 2020-05-15 |
| CN111155846B true CN111155846B (en) | 2021-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010056595.8A Active CN111155846B (en) | 2020-01-18 | 2020-01-18 | Magnetoelectric coupling lock cylinder |
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| CN (1) | CN111155846B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3515106A1 (en) * | 1985-04-26 | 1986-10-30 | Sachs Systemtechnik Gmbh, 8720 Schweinfurt | Magnetic key arrangement |
| CN101110557A (en) * | 2007-08-20 | 2008-01-23 | 北京航空航天大学 | Micro-shift giant magnetostriction material actuator |
| CN101781950A (en) * | 2010-03-15 | 2010-07-21 | 哈尔滨开恩科技开发有限公司 | Magnet key |
| CN203347350U (en) * | 2013-05-17 | 2013-12-18 | 沈新阳 | Novel magnetic coded lock |
| CN108827347A (en) * | 2018-03-30 | 2018-11-16 | 徐州通用高新磁电有限公司 | A kind of magnetoelectric sensor |
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2020
- 2020-01-18 CN CN202010056595.8A patent/CN111155846B/en active Active
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| CN111155846A (en) | 2020-05-15 |
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Effective date of registration: 20220523 Address after: 323000 building 3, Green Valley Information Industry Park, 368 Chengbei street, Liandu District, Lishui City, Zhejiang Province Patentee after: LISHUI ZHIYUAN TECHNOLOGY Co.,Ltd. Address before: 310000 Binjiang District binwen Road, Hangzhou, Hangzhou, Zhejiang Patentee before: ZHEJIANG INSTITUTE OF MECHANICAL & ELECTRICAL ENGINEERING |
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Denomination of invention: A magnetoelectric coupling lock cylinder Effective date of registration: 20221006 Granted publication date: 20210525 Pledgee: Zhejiang Lishui Liandu Rural Commercial Bank Co.,Ltd. Zhongshan Sub branch Pledgor: LISHUI ZHIYUAN TECHNOLOGY Co.,Ltd. Registration number: Y2022980017551 |
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Date of cancellation: 20230308 Granted publication date: 20210525 Pledgee: Zhejiang Lishui Liandu Rural Commercial Bank Co.,Ltd. Zhongshan Sub branch Pledgor: LISHUI ZHIYUAN TECHNOLOGY Co.,Ltd. Registration number: Y2022980017551 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |