CN217001289U - Double-key type coded lock with master key and emergency key - Google Patents

Abstract

The utility model discloses a double-key coded lock with a main key and an emergency key, which comprises a shell, wherein the shell is provided with a knob, a first lock core component is arranged in the knob, the first lock core component is in locked fit with the shell, the first lock core component is in locked fit with the knob, and the knob is provided with a locking groove; an electronic unlocking device is arranged in the shell and comprises a driving part and a lock pin, and the driving part drives the lock pin to be inserted into or separated from the locking groove; still be provided with second lock core subassembly, plectrum in the casing, be provided with drive assembly between second lock core subassembly and the plectrum, second lock core subassembly orders about the plectrum through drive assembly and pushes away the lockpin from the locking groove. The utility model has the following advantages and effects: the mode that an emergency key replaces a driving part to drive the lock pin to be separated from the locking groove is adopted, and the lock is quickly unlocked in emergency; the unlocking process can be realized by adopting two modes of main key and electronic unlocking and main key and auxiliary key matching, and the double-protection and high-safety effects are achieved.

Description

Double-key coded lock with master key and emergency key

Technical Field

The utility model relates to the technical field of coded locks, in particular to a double-key coded lock with a master key and an emergency key.

Background

With the improvement of the quality of life and the anti-theft consciousness of people, valuables or documents needing to be kept secret are gradually placed in a safety box for storage. The anti-theft lock is the core technology of the secret cabinet, and along with the development of science and technology, the current secret lock usually adopts an electronic coded lock or a fingerprint lock, and in the unlocking process, a user can open the lock body of the secret cabinet only through the verification of an electronic code or a fingerprint.

A lock body of a privacy cabinet with an emergency key comprises a shell, a face cover and an electronic control module, wherein the face cover is rotatably provided with a handle main body, a linkage plate is arranged in the shell, the linkage plate is provided with a lock column and a lock block, the lock block is movably arranged on the linkage plate through a transmission assembly, an electromagnetic control mechanism and a mechanical control mechanism are arranged in the shell, the handle main body is provided with a torque assembly, the torque assembly comprises a rotating sleeve and a knob, a linkage structure is arranged between the knob and the linkage plate, and the linkage plate is driven to move relative to the shell when the knob rotates; a first clutch mechanism is arranged between the electromagnetic control mechanism and the torque assembly, and a second clutch mechanism is arranged between the mechanical control mechanism and the torque assembly. When unlocking, the electronic unlocking can be adopted, and the mechanical key can be adopted for unlocking in an emergency.

However, the lock body has the following disadvantages: because electronic unlocking or key mechanical unlocking succeed after, rotate the knob and can realize unblanking, so, only have one locking structure, the illegal person of opening only need explain one locking structure can realize opening of tool to lock, relatively easier, do not have the effect of dual fail-safe, have the lower problem of security.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a double-key coded lock with a master key and an emergency key, which has the effects of double insurance and higher safety.

The technical purpose of the utility model is realized by the following technical scheme: a double-key coded lock with a master key and an emergency key comprises a shell, wherein a knob is rotatably connected to the shell, a first lock core assembly is arranged in the knob, the first lock core assembly is in rotation stopping fit with the shell, the first lock core assembly is in locking fit with the knob, and a locking groove is formed in the knob;

an electronic unlocking device is arranged in the shell and comprises a driving part and a lock pin, and the driving part drives the lock pin to be inserted into or separated from the locking groove;

still be provided with second lock core subassembly, plectrum in the casing, be provided with drive assembly between second lock core subassembly and the plectrum, second lock core subassembly orders about the plectrum through drive assembly and pushes away the lockpin from the locking groove.

By adopting the technical scheme, the coded lock is in a locking state in an initial state, and the lock pin is inserted into the locking groove of the knob, so that the knob cannot rotate; when the electronic unlocking device is unlocked under normal conditions, a correct password is input to unlock the electronic unlocking device, the driving part drives the lock pin to be separated from the locking groove after being started, and the main key is inserted into the first lock cylinder component, so that the first lock cylinder component and the knob are unlocked, and at the moment, the knob can rotate relative to the first lock cylinder component to realize the unlocking process; when electronic unlocking device became invalid and can't pass through the password unblock, the unblock under this emergency can insert emergency key in second lock core subassembly, orders about the plectrum motion through drive assembly behind the second lock core subassembly unblock to promote the lockpin and keep away from the locking groove, insert the master key unblock in first lock core subassembly simultaneously again, can realize the process of unblanking through rotatory knob. So, adopt emergent key to replace the mode that driver part ordered about the lockpin and break away from locking groove, can unblank fast under the electronic failure's emergency, and adopt main key and electronic unblock and main key and assist key matched with dual mode and all can realize the unblock process, in addition, need can rotate the knob completely through twice locking structure when the unblock and realize the process of unblanking, have dual protection, the higher effect of security.

The utility model is further provided with: the first lock core assembly comprises a first lock core and a locking block fixedly connected to the end portion of the first lock core, a support is arranged in the shell, a locking groove is formed in the support, and the locking block is embedded in the locking groove.

Through adopting above-mentioned technical scheme, owing to connect in the latch segment embedding in the locking groove of first lock core tip for first lock core is fixed and can not take place to rotate relative to the support, when first lock core subassembly is in the locking state, because the locking between knob and the first lock core, consequently the knob also can't rotate by the locking along with first lock core.

The utility model is further configured as follows: the knob comprises a first lock shell, a lock groove is formed in the inner wall of the first lock shell, and the lock groove is in locking fit with the elastic sheet of the first lock core; the terminal surface fixedly connected with turning block of first lock shell, the arc has been seted up to the turning block and has been dodged the groove, and when the knob rotated, the latch segment dodged the inslot removal in the arc and forms and dodge.

Through adopting above-mentioned technical scheme, after first lock core subassembly unblock, the knob can drive the turning block and rotate, and when the turning block rotated for the groove motion is dodged to the relative arc of latch segment, and the arc dodges the groove and cooperatees with the latch block and can restrict the rotatory angle of knob to a certain extent.

The utility model is further provided with: be provided with the connecting block on the turning block, the connecting hole has been seted up to the connecting block, is provided with the reference column in the casing, and the cover is equipped with the reset torsion spring on the reference column, and the reset torsion spring orders about the knob and has the motion trend that resets to the primary position all the time after rotating.

Through adopting above-mentioned technical scheme, but the torsional spring that resets makes the knob rotatory after the unblock autogiration reset.

The utility model is further provided with: the support is provided with a limiting block and a limiting column, and the rotating block drives the connecting block to move between the limiting block and the limiting column.

Through adopting above-mentioned technical scheme, when the knob rotated, the knob drove the turning block and rotates, and the turning block drives the connecting block and rotates, and when the connecting block moved between stopper and spacing post, stopper and spacing post cooperation can play the restriction to the rotation angle of knob.

The utility model is further provided with: be provided with micro-gap switch in the casing, the connecting block is contradicted with micro-gap switch and is cooperated, is provided with alarm device in the casing, micro-gap switch electric connection in alarm device.

Through adopting above-mentioned technical scheme, when illegal opener violently opened, the knob rotated and drives the connecting block motion, when the connecting block was contradicted in micro-gap switch, triggered alarm device sent the warning, had higher warning effect.

The utility model is further provided with: the transmission assembly comprises a gear and a rack which are meshed with each other, the gear is fixedly connected to the second lock cylinder assembly, the rack is arranged in the shell in a sliding mode, and the gear is driven to rotate when the second lock cylinder assembly rotates after being unlocked.

Through adopting above-mentioned technical scheme, when rotating after the unblock of second lock core subassembly, can drive gear revolve, because gear and rack mesh mutually, the gear can drive the rack and slide relative casing to drive the plectrum motion, the one end of plectrum can promote the lockpin motion, so, transmission process is more stable, the reliability is higher.

The utility model is further provided with: the rack is provided with a connecting column, the plectrum is provided with a strip-shaped hole, and the connecting column is movably arranged in the strip-shaped hole; the plectrum is provided with the rotary column including connecting portion and stirring portion in the casing, and connecting portion have seted up the commentaries on classics hole, and the plectrum rotates through changeing the hole and connects in the rotary column, and the bar hole is seted up in one side of changeing the hole, and stirring portion sets up in the opposite side in changeing the hole.

By adopting the technical scheme, when the rack slides, the connecting column is driven to move, the connecting column slides in the strip-shaped hole, and the shifting piece is driven to rotate at the same time, so that the shifting piece can push the lock pin.

The utility model is further provided with: the outer wall of the first lock shell is provided with a clutch block, the clutch block is provided with at least one group of symmetrically arranged clutch grooves along the circumferential direction, at least one group of symmetrically arranged clutch plug connectors are movably arranged in the knob through a strong spring, and the clutch plug connectors are in positioning fit with the clutch grooves; be provided with guide structure between separation and reunion plug connector and the separation and reunion groove, when the knob rotated for first lock core subassembly, guide structure ordered about separation and reunion plug connector and taken off the separation and reunion groove.

Through adopting above-mentioned technical scheme, when adopting the violence to open under the abnormal conditions, illegal person of opening adopts instrument violence to rotate the knob, this moment, under guide structure's guide effect, make the separation and reunion plug connector receive powerful spring of revolving force effect extrusion and leave the clutch slot, the effect inefficacy along with changeing between knob and the first plug connector, after the separation and reunion plug connector leaves the clutch slot, the knob can be relative first plug connector free rotation until the separation and reunion plug connector is corresponding to another group clutch slot once more, the separation and reunion plug connector inserts in the clutch slot that corresponds under the spring action of its powerful spring, again with the locking of knob locking with the clutch block. Therefore, the clutch grooves which are symmetrically arranged are matched with the clutch plug-in connectors in an inserting mode, so that the locking effect is more stable and reliable, an illegal opener cannot open the clutch plug-in connectors by violence, and the safety is higher; on the other hand, the device can also play a role in eliminating the will of illegal openers.

The utility model is further provided with: the guide structure comprises a first guide surface arranged on the clutch connector and a second guide surface arranged on the clutch groove, and the second guide surface is in guide fit with the first guide surface.

Through adopting above-mentioned technical scheme, when the relative separation and reunion piece of knob rotated, under the cooperation guide effect of first spigot surface and second spigot surface, separation and reunion piece was released the direction that the separation and reunion plug connector was kept away from the separation and reunion groove for the separation and reunion piece is quick to be disengaged the separation and reunion groove, and when the separation and reunion piece was pushed away the separation and reunion groove, can reduce the wearing and tearing between the two.

In conclusion, the utility model has the following beneficial effects:

1. the mode that the emergency key replaces a driving part to drive the lock pin to be separated from the locking groove is adopted, the lock can be quickly unlocked under the emergency condition of electronic failure, the unlocking process can be realized by adopting two modes of main key and electronic unlocking and main key and auxiliary key matching, in addition, the unlocking process can be realized by completely rotating the knob through two locking structures during unlocking, and the effects of double protection and higher safety are achieved;

2. the rotation angle of the knob can be limited by matching the locking block with the arc avoiding groove and matching the limiting block and the limiting column with the connecting block;

3. the clutch slot and the clutch plug connector which are symmetrically arranged are matched in a splicing manner, so that the locking effect is more stable and reliable, an illegal opener cannot open the clutch slot by violence, and the safety is higher.

Drawings

Fig. 1 is a schematic diagram of the overall structural relationship of the embodiment.

Fig. 2 is a schematic diagram of the internal structural relationship of the embodiment.

Fig. 3 is a schematic structural relationship diagram of the knob structure and the bracket in a separated state according to the embodiment.

FIG. 4 is a sectional view showing the structural relationship of the violent-opening prevention clutch mechanism on the rotary knob of the embodiment.

FIG. 5 is a schematic view of the connection of the second plug assembly, the transmission assembly and the knob according to the embodiment.

FIG. 6 is a schematic diagram of the embodiment showing the knob and transmission assembly in an exploded configuration.

FIG. 7 is a schematic view of the connection of the knob and the transmission assembly of the embodiment with the lock pin in a locked state.

FIG. 8 is a schematic view of the connection of the knob and the transmission assembly of the embodiment with the lock pin in an unlocked state.

Fig. 9 is a schematic structural relationship diagram of the connecting sleeve in the embodiment.

In the figure: 1. a housing; 11. a support; 111. a locking groove; 112. a limiting block; 113. a limiting column; 114. turning the column; 12. a password unlocking panel; 13. a drive member; 14. a lock pin; 141. a bump; 15. a positioning column; 151. a return torsion spring; 16. a second lock cylinder; 161. a square block; 17. a second lock case; 18. a chute; 2. a knob; 21. a first lock cylinder; 22. a locking block; 23. a first lock case; 231. locking the groove; 232. rotating the block; 2321. an arc-shaped avoidance slot; 2322. connecting blocks; 2323. connecting holes; 24. a clutch plug connector; 241. a first guide surface; 25. mounting grooves; 251. a strong spring; 26. a locking groove; 27. a connecting member; 271. a connector; 3. a clutch block; 31. a clutch groove; 311. a second guide surface; 4. a shifting sheet; 41. a connecting portion; 411. hole turning; 412. a strip-shaped hole; 42. a toggle part; 5. a transmission assembly; 51. a gear; 511. connecting sleeves; 5111. a square hole; 52. a rack; 521. connecting columns; 6. a micro switch.

Detailed Description

The utility model will be further described with reference to the accompanying drawings.

The utility model provides a two key formula trick locks with master key and emergency key, as shown in fig. 1-3, including casing 1, rotate on the casing 1 and be connected with knob 2, be equipped with first lock core subassembly in the knob 2, first lock core subassembly and casing 1 spline cooperation, first lock core subassembly is including first lock core 21, fixed connection in the latch segment 22 of first lock core 21 tip, is provided with support 11 in the casing 1, has seted up locking groove 111 on the support 11, the latch segment 22 embedding sets up in locking groove 111. Be provided with first lock shell 23 in the knob 2, open clutch locking cooperation through anti-riot between first lock shell 23 and the knob 2, first lock shell 23 inner wall is provided with locked groove 231, locked groove 231 and first lock core 21's shell fragment locking cooperation, under normal condition, first lock core 21 passes through shell fragment and first lock shell 23 locking cooperation, first lock shell 23 is through anti-riot clutch and 2 locking cooperations of knob, so, when the unblock of first lock core 21 first lock shell 23 relatively, knob 2 can rotate first lock core 21 relatively.

As shown in fig. 3 and 4, the clutch device for preventing violent opening includes a clutch block 3 disposed on the outer wall of the first lock case 23, and a clutch plug 24 movably disposed in the knob 2, the clutch block 3 is provided with four clutch slots 31 at equal intervals along the circumferential direction, the interval between adjacent clutch slots 31 is 90 °, two symmetrical installation slots 25 are formed in the knob 2, the clutch plug 24 is movably disposed in the installation slots 25 in a one-to-one correspondence manner through a strong spring 251, and the clutch plug 24 is in positioning fit with the clutch slots 31; be provided with guide structure between separation and reunion plug-in components 24 and the clutch slot 31, when knob 2 rotated for first lock core subassembly, guide structure ordered about separation and reunion plug-in components 24 and breaks away from clutch slot 31. The guide structure comprises a first guide surface 241 arranged on the clutch plug-in unit 24 and a second guide surface 311 arranged on the clutch groove 31, and the second guide surface 311 is in guide fit with the first guide surface 241.

When adopting the violence to open under the abnormal conditions, illegal person of opening adopts instrument violence to rotate knob 2, at this moment, under guide structure's guide effect, make the huge rotational force effect of separation and reunion plug connector 24 and extrude powerful spring 251 and break away from clutch slot 31, effect inefficacy along with changeing between knob 2 and the first lock core subassembly, after separation and reunion plug connector 24 breaks away from clutch slot 31, knob 2 can be relative first lock core subassembly free rotation until separation and reunion plug connector 24 is corresponding to another group's clutch slot 31 once more, separation and reunion piece 24 inserts in the clutch slot 31 that corresponds under powerful spring's elasticity effect, it locks with knob 2 to separate and reunion piece 3 again. Therefore, the clutch grooves 31 which are symmetrically arranged are matched with the clutch plug-in connectors 24 in an inserted manner, so that the locking effect is more stable and reliable, an illegal opener cannot open the clutch plug-in connectors by violence, and the safety is higher; on the other hand, the device can also play a role in eliminating the will of illegal openers. When the knob 2 rotates relative to the clutch block 3, under the action of the matching guide of the first guide surface 241 and the second guide surface 311, the clutch block 3 pushes the clutch plug 24 away from the clutch groove 31, so that the clutch block 3 is quickly separated from the clutch groove 31, and when the clutch block 3 is pushed away from the clutch groove 31, the abrasion between the clutch block 3 and the clutch groove 31 can be reduced. When the knob 2 is rotated in a normal unlocking state, the knob 2 can drive the first lock case 23 to rotate together because the rotational force is small.

As shown in fig. 1 and 2, a locking groove 26 is formed in a portion of the knob 2 located in the housing 1, a password unlocking panel 12 is arranged on the housing 1, an electronic unlocking device is arranged in the housing 1, the electronic unlocking device is in control fit with the password unlocking panel 12, the electronic unlocking device comprises a driving part 13 and a lock pin 14, and the driving part 13 drives the lock pin 14 to be inserted into or separated from the locking groove 26; the driving part 13 is fixedly arranged in the shell 1 through the bracket 11, the lock pin 14 is movably arranged on the driving part 13, a convex block 141 is arranged on the lock pin 14, the convex block 141 upwards relatively extends out of the locking groove 26, the driving part 13 drives the lock pin 14 to be inserted into or far away from the locking groove 26, when the lock pin 14 is inserted into the locking groove 26, the knob 2 cannot rotate to be locked, and when the lock pin 14 is far away from the locking groove 26, the knob 2 can rotate to realize unlocking.

As shown in fig. 2, fig. 3 and fig. 5, the inner end surface of the first lock case 23 is fixedly connected with the turning block 232, the locking groove 26 is formed in the turning block 232, the side wall of the turning block 232 is provided with an arc-shaped avoiding groove 2321 with an arc angle of 90 degrees, and when the knob 2 rotates, the locking block 22 moves in the arc-shaped avoiding groove 2321 to form avoiding. The rotating block 232 is fixedly connected with a connecting piece 27, and the connecting piece 27 is provided with a connecting head 271 connected with the lock body connecting shaft.

As shown in fig. 2 and fig. 3, a connecting block 2322 is arranged on the side wall of the rotating block 232, a connecting hole 2323 is formed in the connecting block 2322, a positioning column 15 is arranged in the housing 1, a reset torsion spring 151 is sleeved on the positioning column 15, the reset torsion spring 151 drives the knob 2 to have a movement trend of resetting to an original position all the time after rotating, and the reset torsion spring 151 enables the knob 2 to automatically rotate and reset after being rotationally unlocked. The support 11 is provided with a limiting block 112 and a limiting column 113, an arc-shaped track with an arc angle of 90 degrees is formed between the limiting block 112 and the limiting column 113, and the rotating block 232 drives the connecting block 2322 to move in the arc-shaped track between the limiting block 112 and the limiting column 113.

After the first lock core assembly is unlocked, the knob 2 can drive the rotating block 232 to rotate, and when the rotating block 232 rotates, the locking block 22 moves relative to the arc avoiding groove 2321, the arc avoiding groove 2321 is matched with the locking block 22 to limit the rotating angle of the knob 2 to a certain extent, and the knob 2 can only rotate 90 degrees and corresponds to the adjacent separating groove 31 at an interval of 90 degrees. In addition, when the knob 2 rotates, the knob 2 drives the connecting block 2322 to move between the limiting block 112 and the limiting column 113, and the limiting block 112 and the limiting column 113 are matched to limit the rotation angle of the knob 2.

As shown in fig. 6-8, a second lock cylinder assembly and a pick 4 are further disposed in the housing 1, the second lock cylinder assembly includes a second lock case 17 and a second lock cylinder 16 locked and matched with the second lock case 17, the second lock case 17 is fixedly mounted in the housing 1, a transmission assembly 5 is disposed between the second lock cylinder assembly and the pick 4, and the second lock cylinder assembly drives the pick 4 to push the lock pin 14 away from the lock slot 26 through the transmission assembly 5. Be provided with rotary column 114 on casing 1's the support 11, plectrum 4 rotates and sets up on rotary column 114, plectrum 4 is including connecting portion 41 and toggle portion 42, connecting portion 41 has been seted up and has been changeed hole 411, plectrum 4 rotates through changeing hole 411 and connects in rotary column 114, the bar hole 412 that is located connecting portion 41 is seted up to one side of changeing hole 411, toggle portion 42 sets up in the opposite side of changeing hole 411, and the front end of toggle portion 42 offsets the cooperation with lug 141, plectrum 4 supports on protrusion in locking groove 26's lug 141, make the butt effect more stable, and lockpin 14 still can play limiting displacement after being pushed back to target in place.

As shown in fig. 2 and fig. 6 to 8, the transmission assembly 5 includes a gear 51 and a rack 52 that are engaged with each other, the gear 51 is fixedly connected to the end portion of the second lock cylinder 16, a chute 18 is provided in the housing 1, the rack 52 is slidably disposed in the chute 18, one end of the chute 18 away from the pick 4 is set as an open end, one end of the chute 18 close to the pick 4 is set as a closed end, the gear 51 is driven to rotate when the second lock cylinder assembly is unlocked, the rack 52 slides in the chute 18 when moving, the chute 18 linearly limits the rack 52, the rack 52 is highly accurate in position and is not prone to shift, so that the transmission assembly 5 has a good transmission effect all the time, the transmission process is stable, and the reliability is high. One end of the slide groove 18 is set to be an open end to avoid the rack 52 when moving backwards, and the other end of the slide groove 18 is set to be a closed end to limit the rack 52 when moving forwards.

As shown in fig. 6 to 9, the rack 52 is provided with a connecting column 521, and the connecting column 521 extends into the strip-shaped hole 412 and is movably disposed relative to the strip-shaped hole 412. The gear 51 is fixedly connected with a connecting sleeve 511, the connecting sleeve 511 is provided with a square hole 5111, the end part of the second lock cylinder 16 is provided with a square block 161, and the square block 161 is in splicing fit with the square hole 5111. When the emergency key is inserted into the second lock cylinder 16, the second lock cylinder 16 can be rotated after the second lock cylinder 16 and the second lock case 17 are unlocked relatively, and the square block 161 at the end of the second lock cylinder 16 is correspondingly inserted into the square hole 5111 of the connecting sleeve 511, so that the connecting sleeve 511 can be driven to rotate by the rotation of the second lock cylinder 16, and the rotation of the gear 51 can be realized.

As shown in fig. 2, a micro switch 6 electrically connected to the bus board is disposed in the housing 1, the connecting block 2322 is in abutting fit with the micro switch 6, an alarm device is disposed in the housing 1, and the micro switch 6 is electrically connected to the alarm device. When an illegal opener opens violently, the knob 2 rotates to drive the connecting block 2322 to move, and when the connecting block 2322 abuts against the microswitch 6, the alarm device is triggered to give an alarm, so that the alarm device has a high warning effect.

The basic working principle of the utility model is as follows: in the initial state, the coded lock is in a locked state, and the lock pin 14 is inserted into the locking groove 26 of the knob 2, so that the knob 2 cannot rotate; when the electronic unlocking device is unlocked under normal conditions, a correct password is input to unlock the electronic unlocking device, the driving part 13 drives the lock pin 14 to be separated from the locking groove 26 after being started, and the main key is inserted into the first lock core assembly, so that the unlocking is realized between the first lock core 21 and the first lock shell 23, and at the moment, the knob 2 can rotate relative to the first lock core 21 to realize the unlocking process; when the electronic unlocking device fails and cannot be unlocked through the password, the emergency key can be inserted into the second lock cylinder 16 for unlocking in case of emergency, after the second lock cylinder 16 is unlocked, the second lock cylinder 16 drives the gear 51 to rotate, the gear 51 can drive the rack 52 to slide relative to the chute 18 due to the fact that the gear 51 is meshed with the rack 52, when the rack 52 slides, the connecting column 521 is driven to move, the connecting column 521 slides in the strip-shaped hole 412, the plectrum 4 is driven to rotate, and therefore the lock pin 14 is pushed to be far away from the locking groove 26 through the front end of the plectrum 4. Simultaneously insert the unblock in first lock core subassembly with the master key again, can realize the process of unblanking through rotatory knob 2. So, adopt emergent key to replace the mode that driver part ordered about lockpin 14 and break away from locking groove 26, can unblank fast under the electronic failure's emergency, and adopt main key and electron unblock and main key and assist key matched with dual mode all can realize the unblock process, in addition, need can rotate knob 2 completely through twice locking structure when the unblock and realize the process of unblanking, and be provided with anti-violence opening device between knob 2 and the first lock core subassembly, when violence is opened, can make along with the rotation effect inefficacy between knob 2 and the first lock core subassembly, carry out invalid rotation, so, have dual unblock protection, the effect of anti-violence opening, higher security has in the use.

The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present patent application are included in the present patent application.

Claims (10)

1. The utility model provides a two key formula trick locks with master key and emergency key, including casing (1), rotate on casing (1) and be connected with knob (2), its characterized in that: a first lock core component is arranged in the knob (2), the first lock core component is in rotation stopping fit with the shell (1), the first lock core component is in locking fit with the knob (2), and a locking groove (26) is formed in the knob (2);

an electronic unlocking device is arranged in the shell (1), the electronic unlocking device comprises a driving part (13) and a lock pin (14), and the driving part (13) drives the lock pin (14) to be inserted into or separated from the locking groove (26);

still be provided with second lock core subassembly, plectrum (4) in casing (1), second lock core subassembly with be provided with drive assembly (5) between plectrum (4), second lock core subassembly passes through drive assembly (5) orders about plectrum (4) will lockpin (14) push away from locking groove (26).

2. The two-key combination lock with a master key and an emergency key as claimed in claim 1, wherein: first lock core subassembly including first lock core (21), fixed connection in the latch segment (22) of first lock core (21) tip, be equipped with support (11) in casing (1), locking groove (111) have been seted up in support (11), latch segment (22) embedding set up in locking groove (111).

3. A two-key combination lock having a master key and an emergency key as defined in claim 2, wherein: the knob (2) comprises a first lock shell (23), a lock groove (231) is formed in the inner wall of the first lock shell (23), and the lock groove (231) is matched with an elastic sheet of the first lock cylinder (21) in a locking mode; the terminal surface fixedly connected with turning block (232) of first lock shell (23), arc dodge groove (2321) has been seted up in turning block (232), works as when knob (2) rotate, latch segment (22) in arc dodges and removes formation in groove (2321) and dodge.

4. A two-key combination lock having a master key and an emergency key as defined in claim 3, wherein: be provided with connecting block (2322) on turning block (232), connecting hole (2323) have been seted up in connecting block (2322), be provided with reference column (15) in casing (1), the cover is equipped with reset torsion spring (151) on reference column (15), reset torsion spring (151) orders about knob (2) have the motion trend that resets to primary position all the time after rotating.

5. The two-key combination lock with a master key and an emergency key of claim 4, wherein: the support (11) is provided with a limiting block (112) and a limiting column (113), and the rotating block (232) drives the connecting block (2322) to move between the limiting block (112) and the limiting column (113).

6. The two-key combination lock with a master key and an emergency key of claim 4, wherein: be provided with micro-gap switch (6) in casing (1), connecting block (2322) with micro-gap switch (6) conflict cooperation, be provided with alarm device in casing (1), micro-gap switch (6) electric connection in alarm device.

7. The two-key combination lock with a master key and an emergency key as claimed in claim 1, wherein: drive assembly (5) are including engaged with gear (51) and rack (52), gear (51) fixed connection in second cylinder assembly, rack (52) slide set up in casing (1), work as drive when rotating after the unblock of second cylinder assembly gear (51) rotate.

8. The combination lock of claim 7, wherein the combination lock comprises a master key and an emergency key, and wherein: a connecting column (521) is arranged on the rack (52), a strip-shaped hole (412) is formed in the poking piece (4), and the connecting column (521) is movably arranged in the strip-shaped hole (412); the poking piece (4) comprises a connecting portion (41) and a poking portion (42), a rotary column (114) is arranged in the shell (1), a rotary hole (411) is formed in the connecting portion (41), the poking piece (4) is connected to the rotary column (114) in a rotating mode through the rotary hole (411), the strip-shaped hole (412) is formed in one side of the rotary hole (411), and the poking portion (42) is arranged on the other side of the rotary hole (411).

9. A two-key combination lock having a master key and an emergency key as defined in claim 3, wherein: the outer wall of the first lock shell (23) is provided with a clutch block (3), at least one group of symmetrically-arranged clutch grooves (31) are formed in the clutch block (3) along the circumferential direction, at least one group of symmetrically-arranged clutch plug connectors (24) are movably arranged in the knob (2) through a strong spring (251), and the clutch plug connectors (24) are in positioning fit with the clutch grooves (31); separation and reunion plug connector (24) with be provided with guide structure between separation and reunion groove (31), work as knob (2) are relative when first lock core subassembly rotates, guide structure orders about separation and reunion plug connector (24) break away from separation and reunion groove (31).

10. The two-key combination lock with a master key and an emergency key of claim 9, wherein: the guide structure comprises a first guide surface (241) arranged on the clutch plug connector (24) and a second guide surface (311) arranged on the clutch groove (31), and the second guide surface (311) is in guide fit with the first guide surface (241).

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