CN202164886U

CN202164886U - Locking device for permanent magnet component of combination lock

Info

Publication number: CN202164886U
Application number: CN2011202106229U
Authority: CN
Inventors: 蔡海善
Original assignee: Ningbo Yongfa Group Co Ltd
Current assignee: Ningbo Yongfa Group Co Ltd
Priority date: 2011-06-21
Filing date: 2011-06-21
Publication date: 2012-03-14
Anticipated expiration: 2021-06-21

Abstract

A locking device for a permanent magnet component of a combination lock comprises a key cylinder, a lock tongue, a key cylinder-lock tongue connecting part, a lock tongue interlocking part, a cam stop block, a CPU circuit, an input keystroke and a display screen, and is characterized in that an electromagnetic coil connected with the output end of the CPU circuit is arranged below the cam stop block; a permanent magnet rod is arranged in the electromagnetic coil; a permanent magnet block is arranged at the bottom of the electromagnetic coil; the magnetic fields of the permanent magnet rod and the permanent magnet block are repelled by each other, and generate a force to push the permanent magnet rod upwards; the upper end of the permanent magnet rod is in movable contact with the lower end surface of the cam stop block; and the upper end surface of the cam stop block is locked with the rear end of the lock tongue interlocking part. The ferromagnetic Nd-Fe-B permanent magnet block at the bottom end of the electromagnetic coil replaces an iron rod to support a spring during work, so that potential hazards caused by improper unlocking can be eliminated, and the safety and the reliability are improved. As the ferromagnetic Nd-Fe-B permanent magnet block replaces the conventional iron rod, the energy loss is reduced, the locking device can be miniaturized, and the working current of a working current coil is reduced to one third of the original working current of the working current coil. Therefore, the service life of a battery is prolonged.

Description

Coded lock permanent magnet assembly locker

Technical field

The utility model relates to the electromechanical integration lock, particularly makes the electromechanical integration coded lock of locker of permanent magnet assembly.

Background technology

China has upgraded the standard GB 10409-2001 about theft proof strongbox in calendar year 2001; So far the lockset of electronic password lock safety cabinet does not still have great change always; For a long time; Adopt big current coil to produce magnetic field and drive the locking device of the electromagnet of iron staff motion, become the standard configuration of each Electronic safe, strongbox and rifle cabinet as control safety cabinet, strongbox and rifle cabinet.

Shown in Figure 1 is the structure chart that the conventional magnet control of Cipher safety cabinet is unblanked on the market; Fig. 1 b comprises the key 1 of unblanking, mechanical lock 2, dead bolt 3, iron staff 4, iron staff support spring 5, lock core dead bolt connector 6, electromagnet coil 7, cam dog 8, back-moving spring 9, dead bolt moving part 10 etc. for amplifying among Fig. 1 a and being hidden in the back-moving spring 9 under the cam dog 8.At ordinary times, cam dog 8 is resetted by back-moving spring 9, and iron staff 4 usefulness support springs 5 elastic force rise, and stops cam dog 8 to rotate, and cam dog 8 stops dead bolt moving part 10 to move, and inserts the key 1 of unblanking and can't unblank by rotational lock core 2; When the input password was correct, safety cabinet controller output high level signal was connected electromagnet coil 7; Electromagnet coil 7 is because of electric current produces magnetic field, and magnetic field force moves downward greater than the elastic force drive iron staff 4 of support spring 5, breaks away from cam dog 8 positions; Insertion unblank key 1 and rotational lock core 2; Lock core dead bolt connector 6 drives dead bolt moving part 10 and moves, and dead bolt moving part 10 actuating cam blocks 8 rotate, and the safety cabinet lock is opened.

Iron staff 4 leans on iron staff support spring 5 elasticity to pop up when flat; Iron staff 4 is subject to the external force vibrations and shake up and down, when iron staff is shaken downwards, and the hidden danger that existence is illegally unblanked; Influence safety, and in a single day iron staff support spring 5 follows the string or is prone to block and gets rusty and influence operate as normal.The magnetic field force of electromagnetic coil will make iron staff overcome the resilient support of support spring when unblanking, and consume enough energy, makes electromagnetic coil work power consumption big, and battery service life is short, poor reliability.

The utility model content

The utility model is to the existing problem of motion electromagnet in the electromechanical integration lockset, designs a kind of elimination hidden danger of illegally unblanking, and motion electromagnet little power consumption prolongs battery working time, improves the electromechanics-integrated lockset of safety and reliability.

Coded lock permanent magnet assembly locker; Comprise lock core, dead bolt, lock core dead bolt connector, dead bolt moving part, cam dog, cpu circuit, button input and display screen; It is characterized in that below cam dog, establishing the electromagnetic coil that is connected with the CPU output; In electromagnetic coil, establish permanent magnet bar; Establish permanent magnet blocks in the electromagnetic coil bottom, said permanent magnet bar produces the force urges permanent magnet bar upper end of repelling each other in magnetic field with permanent magnet blocks and contacts with said cam dog lower surface is movable, and lock each other cam dog upper surface and said dead bolt moving part rear end.

Said cpu circuit output signal makes electromagnetic coil bottom magnetic polarity opposite with permanent magnet bar lower end polarity, makes the permanent magnet bar upper end break away from the lower surface of said cam dog, and lock release allows key rotation lock core to unblank.

The beneficial effect of the utility model is: the strong magnetic Nd-Fe-B permanent magnet piece that at first is provided in a side of the coil bottom replaces the work of iron staff support spring; Utilize the permanent magnet pole same sex to repel each other; Permanent magnet bar is risen; Do not receive external shock and shake up and down, eliminated the hidden danger of illegally unblanking, improved safety and reliability step.Secondly, adopt strong magnetic Nd-Fe-B permanent magnet rod to replace common iron staff, the magnetic field force that when coil electricity, produces and the magnetive attraction of permanent magnet bar attract each other and make the magnetic field force stack; Reduce energy loss, add Miniaturizable, can reduce operating current; The coil operating current can reduce to less than original 1/3 in the utility model, thereby has prolonged battery application life, and this also is one of long-term anxious problem to be solved of existing electromechanical integration coded lock; How to reduce the power consumption of coded lock; Prolong battery application life,, the electromechanical integration coded lock is further applied to improve reliability.

Description of drawings

Fig. 1 is the existing password lock electromagnet structure chart of locking a door, and wherein Fig. 1 a is the lockset back side, and Fig. 1 b is for amplifying among Fig. 1 a and being hidden in the back-moving spring under the cam dog.

Fig. 2 is the utility model coded lock permanent magnet assembly locker locking state sketch map, and wherein Fig. 2 a is the lockset back side, and Fig. 2 b is that lockset is positive, and Fig. 2 c is that A portion amplifies among Fig. 2 a.

Fig. 3 is the utility model coded lock permanent magnet assembly locker unlocking condition sketch map, and wherein Fig. 3 a is the lockset back side, and Fig. 3 b is that lockset is positive, and Fig. 3 c is that the A portion among Fig. 3 a amplifies.

Fig. 4 is single chip machine controlling circuit figure, and wherein Fig. 4 a is a locking state, and Fig. 4 b is a unlocking condition.

Fig. 5 is the improvement structural representation of dead bolt moving part and cam dog.

The specific embodiment

Below in conjunction with accompanying drawing the utility model structure and the course of work are further specified.

Shown in Fig. 2 a, Fig. 2 b and Fig. 2 c, the machine components of electronic cipher lockset comprise key 1, lock core 2, lock core dead bolt connecting rod 6, cam dog 8, dead bolt moving part 10, dead bolt 3.Fig. 2 a representes the lockset back side, and the lower end of lock core dead bolt connecting rod 6 connects lock core 2, and the upper end connects dead bolt moving part 10; The dead bolt 3 of dead bolt moving part 10 front ends passes locking frame 13; Below, dead bolt moving part 10 rear ends is established with the upper end vertical plane of cam dog 8 and is contacted. and permanent magnet assembly is located at the below of cam dog 8, comprises electromagnetic coil 7, is located at the permanent magnet bar 12 of electromagnetic coil 7 centres; Be located at the permanent magnet blocks 11 of electromagnetic coil 7 bottoms; Permanent magnet bar and permanent magnet blocks select for use height to entangle the strong magnetic Nd Fe B alloys of stupid power, and electromagnetic coil 7 places in the coil box, and permanent magnet blocks 11 places between the bottom of coil box bottom surface and electromagnetic coil 7; The N utmost point of permanent magnet bar 12 is corresponding extremely each other with the N of permanent magnet fast 11, and the upper end of permanent magnet bar 12 is that the S utmost point stretches out electromagnetic coil 7.Cam dog 8 is the orthodrome sagittal plane, and cam dog 8 lower end vertical planes contact with the upper surface of permanent magnet bar 12,, cam dog upper end vertical plane contacts with dead bolt moving part 10 rear end faces.Cam dog 8 is fixed in the base of dead bolt moving part 10 rear ends by camshaft, and cam returning spring 9 is enclosed within on the camshaft, and the front end of dead bolt moving part 10 is two parallel dead bolt posts 3.As shown in Figure 5, dead bolt moving part 10 bottom surfaces are horizontal-extending piece 17, and a flange 19 parallel with outer rim also can be established in the upper end of the great circle cambered surface of cam dog 8; This flange 19 is corresponding with the groove 18 that dead bolt moving part 10 bottom surface horizontal-extending pieces 17 are established; Flange 19 and groove 18 mutual fits, after locking a door, permanent magnet bar 12 contacts with the lower surface of cam dog 8; Dead bolt moving part 10 can't rotate by actuating cam block 8, to improve the reliability of locking.Fig. 2 b representes the positive setting of lockset, like key 1, lock core 2, input button 14 and display screen 15, and is located at the cpu controller 16 behind the display screen 15.

Shown in Fig. 3 a, Fig. 3 b and Fig. 3 c, when key 1 when the lock core of Fig. 3 b 2 inserts, be power connection; Display screen 15 is lighted can be through input button 14 input passwords, if the input password is correct, 7 energisings of CPU control electromagnetic coil generate an electromagnetic field; It is the S utmost point that the coil generation sense of current makes the coil bottom, and the coil top is N, shown in Fig. 4 c; The electromagnetic coil 7 of this moment produces suction on the contrary with the polarity of permanent magnet bar 12, and by the reverse magnetic force that the magnetic force and the coil electricity of permanent magnet bar 12 itself produces, the suction of these two bursts of stacks is much larger than the N-N mutual expelling force of permanent magnet bar 12 and permanent magnet blocks 11; Therefore the top of permanent magnet bar 12 breaks away from cam dog 8 lower surfaces; Key 1 can rotate in lock core, and drives 6 rotations of lock core dead bolt connecting rod, and the dead bolt moving part 10 that is connected with lock core dead bolt connecting rod 6 upper ends moves horizontally and drives cam dog 8 and rotates; Make dead bolt 3 leave locking guide pad 13, lock is opened.Again after locking a door, dead bolt moving part 10 breaks away from cam dog 8, and back-moving spring 9 drives cam dog 8 rotations and resets; Extract key 1 and promptly cut off the electricity supply this moment, electromagnetic coil 7 outages behind the dump, and the magnetic field of electromagnetic coil 7 disappears; But still the power that exists the permanent magnet bar 12 and permanent magnet blocks 11 same sexes to repel each other promptly exists one with the power that permanent magnet bar 12 is upwards pushed up, and the upper end of permanent magnet bar 12 contacts with cam dog 8 lower surfaces; With cam dog 8 chuckings, shown in Fig. 3 a and Fig. 3 c.As shown in Figure 5, the flange parallel with outer rim 19 also can be established in the upper end of the great circle cambered surface of cam dog 8, and the groove of establishing on this flange 19 and the dead bolt moving part 10 bottom surface horizontal-extending pieces 17 18 is corresponding; When locking a door again; Dead bolt moving part 10 moving belt moving cam blocks 8 rotate, and after locking a door, cam dog 8 resets fully; Permanent magnet bar 12 rises; Permanent magnet bar 12 upper ends contact with cam dog 8 lower surfaces, and dead bolt moving part 10 can't rotate by actuating cam block 8, has omitted the back-moving spring 9 of cam dog 8.

Fig. 4 a and Fig. 4 b represent the duty of the permanent magnet assembly locker of cpu chip control coded lock, and CPU is connected with electromagnetic coil 7 with triode G1 through resistance R 1, at ordinary times; The CPU output low level; Electromagnetic coil 7 no magnetic field forces only are the power that the N utmost point and the N utmost point of permanent magnet bar 12 of permanent magnet blocks 11 repels mutually, with the lower surface of permanent magnet bar 12 top overhead cam blocks 8; Stop dead bolt moving part 10 to move, forbid that key 1 rotational lock core unblanks; Through button input password; CPU will input the data of password and storage and compare, if input is correct, CPU exports high level; Triode G1 amplifies and closing coil; Electromagnetic coil produces magnetic field through battery supply energising, and the suction after the own magnetive attraction of electromagnetic coil magnetic field force and permanent magnet bar is superimposed is much larger than the repulsion of permanent magnet blocks 11, with permanent magnet bar to drop-down.If password input error; The CPU no-output is shown in Fig. 1 a, simultaneously; The magnetic field force that suction after magnetic field force that produces during the electromagnetic coil energising and the magnetive attraction of permanent magnet bar own are superimposed produces when conventional single electromagnetic winding is switched on; Operating current can reduce to less than original 1/3, has both solved integrity problem, embodies energy-conservation outstanding advantage again.

Claims

1. coded lock permanent magnet assembly locker; Comprise lock core, dead bolt, lock core dead bolt trace, dead bolt moving part, cam dog, cpu circuit, button input and display screen; It is characterized in that below cam dog, establishing the electromagnetic coil that is connected with the CPU output; In electromagnetic coil, establish permanent magnet bar; Establish permanent magnet blocks in the electromagnetic coil bottom, said permanent magnet bar produces the force urges permanent magnet bar upper end of repelling each other in magnetic field with permanent magnet blocks and contacts with said cam dog lower surface is movable, and lock each other cam dog upper surface and said dead bolt moving part rear end.

2. coded lock permanent magnet assembly locker according to claim 1; It is characterized in that said cpu circuit output signal makes electromagnetic coil (7) bottom magnetic polarity opposite with permanent magnet bar (12) lower end magnetic polarity; Make permanent magnet bar (12) upper end break away from the lower surface of said cam dog (8), lock release.

3. coded lock permanent magnet assembly locker according to claim 2 is characterized in that cpu circuit is connected with electromagnetic coil with triode G1 through resistance R 1.

4. coded lock permanent magnet assembly locker according to claim 1 is characterized in that said cam dog (8) great circle cambered surface upper end is provided with the flange parallel with outer rim (19).

5. coded lock permanent magnet assembly locker according to claim 1 is characterized in that said dead bolt moving part (10) bottom surface establishes horizontal-extending piece (17), establishes the corresponding groove of flange (19) (18) with cam dog in the horizontal-extending piece (17).