CN108868337B - Double-keyhole lock cylinder capable of preventing forced unlocking by breaking lock cylinder - Google Patents
Double-keyhole lock cylinder capable of preventing forced unlocking by breaking lock cylinder Download PDFInfo
- Publication number
- CN108868337B CN108868337B CN201810748455.XA CN201810748455A CN108868337B CN 108868337 B CN108868337 B CN 108868337B CN 201810748455 A CN201810748455 A CN 201810748455A CN 108868337 B CN108868337 B CN 108868337B
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- lock
- hole
- liner
- key
- groove
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B27/00—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
- E05B27/02—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in operated by the edge of the key
- E05B27/08—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in operated by the edge of the key arranged axially
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B27/00—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
- E05B27/0003—Details
- E05B27/0007—Rotors
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B27/00—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
- E05B27/0057—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in with increased picking resistance
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B27/00—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
- E05B27/0085—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in wherein the key can be inserted or withdrawn in different positions or directions
- E05B27/0092—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in wherein the key can be inserted or withdrawn in different positions or directions wherein the key can be inserted from both sides of the lock
Landscapes
- Lock And Its Accessories (AREA)
Abstract
A dual-keyhole lock cylinder capable of preventing forced unlocking by breaking the lock cylinder comprises a lock shell, a shifting fork, a first lock liner, a second lock liner, a first marble component and a second marble component; the first lock liner is provided with a containing hole, the lock shell is provided with a groove, the first lock liner is provided with a first spring, the first rotary key is provided with a pin hole, a bayonet lock is arranged in the pin hole, a second spring is arranged between the bottom of the pin hole and the bottom end of the bayonet lock, the first lock liner is provided with a first through hole, and the shifting fork is provided with a locking hole; in a normal state, the bayonet lock acts on the inner wall of the accommodating hole through the second spring; after the lock core is broken at the groove, the first spring pushes the first rotary key outwards, and the bayonet lock after pushing outwards passes through the first through hole on the first lock liner under the action of the second spring and then is inserted into the locking hole of the shifting fork. Therefore, the first rotary key, the first lock liner and the shifting fork are mutually clamped, and even if an illegal person damages a lock cylinder outside the door, the lock cylinder still belongs to a locking state, the door cannot be easily opened, and the safety of a user is effectively ensured.
Description
[ field of technology ]
The invention relates to a lock cylinder, in particular to a double-keyhole lock cylinder capable of preventing forced unlocking by breaking the lock cylinder.
[ background Art ]
The 22 nd 2017 discloses (publication No. CN 106522666A) an anti-breaking lock cylinder, which comprises a lock shell, a dial peach arranged in an opening groove in the middle of the lock shell, an inner lock liner and an outer lock liner respectively arranged in the lock shell positioned at two sides of the dial peach, a first marble component arranged in the inner lock liner and the lock shell, and a second marble component arranged in the outer lock liner and the lock shell, wherein the inner lock liner and the outer lock liner are respectively linked with the dial peach through an inner rotating key and an outer rotating key, and side wings at two sides of the inner rotating key and the outer rotating key are respectively and slidably arranged in notch grooves of the inner lock liner and the outer lock liner; a spring capable of pushing the inner rotary key to the peach pulling direction is arranged in the inner lock liner; a platform is cut at the upper part of the inner rotary key, and a lower magnetic attraction piece is fixedly arranged in the platform; an upper suction piece is arranged in an upper magnetic suction piece chute of the inner lock liner positioned above the lower magnetic suction piece and is sucked with the lower magnetic suction piece; in a normal state, the bottom of the upper magnetic attraction piece is tangent to the outer circle of the inner rotary key; the height of the upper magnetic attraction piece is higher than the depth of the platform; when the lock core is broken at the groove, after the spring pushes the inward rotation key outwards, the upper magnetic attraction piece is attracted to the platform by the lower magnetic attraction piece under the action of magnetic force. The anti-breaking lock cylinder has the following defects: 1. after the lock core is broken at the groove, the spring pushes the inner rotary key outwards, and the upper magnetic attraction piece is attracted to the platform by the lower magnetic attraction piece under the action of magnetic force, so that the rotation of the inner rotary key is limited through the contact between the upper magnetic attraction piece and the surface of the lower magnetic attraction piece on the platform; because of the volume of the lock core, the clamping contact area of the upper magnetic attraction piece and the inner rotary key is small, so that the clamping strength is insufficient. 2. After the lock core is broken at the groove, the upper magnetic attraction piece and the inner rotary key are mutually clamped without clamping the poking peach, and an lawbreaker can unlock the poking peach only by prying open the poking peach, so that the lock core can bring great potential safety hazard to a user and is not beneficial to protecting the property safety of the user.
[ invention ]
The invention aims to solve the problems, and provides the double-keyhole lock cylinder for preventing forced unlocking by breaking the lock cylinder, which has the advantages of compact structure, enhanced clamping strength and high safety coefficient.
The technical scheme adopted by the invention is as follows:
the double-keyhole lock cylinder for preventing forced unlocking by breaking the lock cylinder comprises a lock shell 1, a shifting fork 2 arranged in an open slot 12 in the middle of the lock shell 1, a first lock liner 3 and a second lock liner 4 respectively arranged in the lock shell 1 positioned at two sides of the shifting fork 2, a first marble component 30 arranged in the first lock liner 3 and the lock shell 1, a second marble component 40 arranged in the second lock liner 4 and the lock shell 1, wherein the first lock liner 3 and the second lock liner 4 are respectively linked with the shifting fork 2 through a first rotary key 31 and a second rotary key 41, flanks at two sides of the first rotary key 31 and the second rotary key 41 are respectively arranged in notch grooves 37 and 42 of the first lock liner 3 and the second lock liner 4 in a sliding way, a containing hole 38 for containing the first rotary key 31 is formed in the first lock liner 3, a groove 43 serving as an external force breaking position is formed on one side of the lock shell 1 corresponding to the second lock liner 4, a first pin hole 34 capable of pushing the first rotary key 31 towards the first rotary key 2 is formed in the first lock liner 3, a first pin hole 33 is formed between the bottom of the first rotary key 31 and the first pin 33 is formed in the first pin hole 33; the shifting fork 2 is provided with a locking hole 21 which can be mutually aligned with the first through hole 36; in the normal state, the bayonet 33 is pressed against the inner wall 381 of the accommodating hole 38 under the action of the second spring 35; after the lock core is broken at the groove 43, after the first spring 32 pushes the first rotary key 31 outwards, the bayonet 33 passes through the first through hole on the first lock cylinder 3 under the action of the second spring 35 and then is inserted into the locking hole 21 of the shifting fork 2.
The bayonet lock 33 on be equipped with insert portion 331 and setting and insert portion 331 bottom fixed connection or integrated into one piece's spacing portion 332 in the locking hole 21 on the shift fork 2 after passing first through-hole 36 on the first lock courage 3, insert portion 331 with first through-hole 36, locking hole 21 adaptation, the diameter of spacing portion 332 be greater than the diameter of first through-hole 36 on the first lock courage 3.
The end of the first rotary key 31 and the end of the second rotary key 41 are provided with a relief groove 50.
Two sides of the relief groove 50 on the end part of the first turning key 31 are provided with bosses 51, two first springs 32 are distributed on two sides of the center line of the first lock cylinder 3, and the first springs 32 are propped against the end surfaces of the bosses 51 on two sides of the relief groove 50 through pins 52.
The first lock cylinder 3 is provided with a first annular reserved groove 61 arranged along the circumferential direction of the first lock cylinder, a gap is reserved between one side surface of the opening groove 12 on the lock shell 1 and one end surface of the shifting fork 2, and the lock cylinder also comprises a first clamping ring 62 which can be embedded into the gap and clamped on the first reserved groove 61 so that the first lock cylinder 3 is axially fixed relative to the lock shell 1.
The second lock cylinder 4 is provided with a second annular reserved groove 63 arranged along the circumferential direction of the second lock cylinder, and the lock cylinder also comprises a second clamping ring 64 which can be embedded into the groove 43 of the lock shell 1 and clamped on the second reserved groove 63 so that the second lock cylinder 4 is axially fixed relative to the lock shell 1.
Compared with the prior art, the invention has the advantages that:
1. in a normal state (namely when the groove of the lock core is not broken), the bayonet lock is kept to be pressed against the inner wall of the first lock container under the action of the second spring, and can be locked or unlocked normally after the key is correctly inserted, when the groove of the lock core is broken, the first rotary key moves outwards of the first lock container under the action of the first spring, and after the first rotary key moves for a certain distance, the bayonet lock falls into the first through hole under the action of the second spring; when the lock cylinder is in a locking state, the first through hole on the first lock liner and the locking hole on the shifting fork are aligned, so that the clamping pin can pass through the first through hole and be inserted into the locking hole, and the first rotary key, the first lock liner and the shifting fork can be mutually clamped through the cooperation of the clamping pin and the locking hole; compared with the prior art, the clamping area is increased, and the first rotary key, the first lock liner and the shifting fork are mutually clamped, so that the fixing strength of the first rotary key, the first lock liner and the shifting fork relative to the lock shell is increased; even if an lawless person damages a lock cylinder outside the door, the lock cylinder still belongs to a locking state, and the door cannot be easily opened, so that the benefit safety of a user is effectively ensured; the user can unlock the door by inserting a key.
2. According to the technical scheme, the locking pin is further improved, the locking pin is provided with an insertion part which penetrates through a first through hole in the first lock liner and is inserted into a locking hole in the shifting fork, and a limiting part which is fixedly connected with the bottom end of the insertion part or is integrally formed, the insertion part is matched with the first through hole and the locking hole, and the diameter of the limiting part is larger than that of the first through hole in the first lock liner. Because the insertion part of the bayonet lock is matched with the first through hole and the locking hole, the bayonet lock is inserted into the first through hole and the locking hole under the action of the second spring; the diameter of the limiting part of the bayonet lock is larger than that of the first through hole, and the limiting part cannot be separated from the pin hole to enter the first through hole, so that the bayonet lock is effectively clamped.
[ description of the drawings ]
FIG. 1 is a perspective view of the invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a front view of the invention;
FIG. 4 is a schematic view of the invention;
FIG. 5 is a cross-sectional view in the A-A direction of the first cylinder of the lock cylinder of FIG. 3 after insertion of a key;
FIG. 6 is a cross-sectional view in the A-A direction of the second cylinder of the lock cylinder of FIG. 3 after insertion of a key;
FIG. 7 is a schematic view of the structure of the lock cylinder after breaking at the groove;
fig. 8 is a sectional view in the direction B-B of fig. 4.
[ detailed description ] of the invention
The invention is further described below with reference to fig. 1 to 8:
the double-keyhole lock cylinder for preventing forced unlocking by breaking the lock cylinder comprises a lock shell 1, a shifting fork 2 arranged in an open slot 12 in the middle of the lock shell 1, a first lock liner 3 and a second lock liner 4 respectively arranged in the lock shell 1 positioned at two sides of the shifting fork 2, a first marble component 30 arranged in the first lock liner 3 and the lock shell 1, a second marble component 40 arranged in the second lock liner 4 and the lock shell 1, wherein the first lock liner 3 and the second lock liner 4 are respectively linked with the shifting fork 2 through a first rotary key 31 and a second rotary key 41, flanks at two sides of the first rotary key 31 and the second rotary key 41 are respectively arranged in notch grooves 37 and 42 of the first lock liner 3 and the second lock liner 4 in a sliding way, a containing hole 38 for containing the first rotary key 31 is formed in the first lock liner 3, a groove 43 serving as an external force breaking position is formed on one side of the lock shell 1 corresponding to the second lock liner 4, a first pin hole 34 capable of pushing the first rotary key 31 towards the first rotary key 2 is formed in the first lock liner 3, a first pin hole 33 is formed between the bottom of the first rotary key 31 and the first pin 33 is formed in the first pin hole 33; the shifting fork 2 is provided with a locking hole 21 which can be mutually aligned with the first through hole 36; in the normal state, the bayonet 33 is pressed against the inner wall 381 of the accommodating hole 38 under the action of the second spring 35; after the lock core is broken at the groove 43, after the first spring 32 pushes the first rotary key 31 outwards, the bayonet 33 passes through the first through hole 36 on the first lock cylinder 3 under the action of the second spring 35 and then is inserted into the locking hole 21 of the shifting fork 2. In a normal state (i.e. when the groove 43 of the lock core is not broken), the bayonet lock 33 keeps pressing against the inner wall 381 of the first lock cylinder 3 under the action of the second spring 35, and can be locked or unlocked normally after the key is correctly inserted, when the groove 43 of the lock core is broken, under the action of the first spring 32, the first rotary key 31 moves outwards of the first lock cylinder 3, and after the first rotary key 31 moves a certain distance, the bayonet lock 33 falls into the first through hole 36 under the action of the second spring 35; when the lock cylinder is in a locking state, the first through hole 36 on the first lock cylinder 3 is aligned with the locking hole 21 on the shifting fork 2, so that the clamping pin 33 can be inserted into the locking hole 21 through the first through hole 36, and the first rotary key 31, the first lock cylinder 3 and the shifting fork 2 can be mutually clamped through the cooperation of the clamping pin 33 and the locking hole 21; compared with the prior art, the clamping area is increased, and the first rotary key 31, the first lock cylinder 3 and the shifting fork 2 are mutually clamped, so that the fixing strength of the first rotary key, the first lock cylinder 3 and the shifting fork 2 relative to the lock shell 1 is increased; even if an lawless person damages a lock cylinder outside the door, the lock cylinder still belongs to a locking state, and the door cannot be easily opened, so that the benefit safety of a user is effectively ensured; the user can unlock the door by inserting a key.
Further preferably, the bayonet lock 33 is provided with an insertion portion 331 inserted into the locking hole 21 of the shift fork 2 after passing through the first through hole 36 of the first lock container 3, and a limit portion 332 fixedly connected or integrally formed with the bottom end of the insertion portion 331, the insertion portion 331 is adapted to the first through hole 36 and the locking hole 21, and the diameter of the limit portion 332 is larger than that of the first through hole 36 of the first lock container 3. Since the insertion portion 331 of the bayonet lock is fitted to the first through hole 36 and the locking hole 21, the bayonet lock 33 is inserted into the first through hole 36 and the locking hole 21 by the second spring 35; the diameter of the stopper portion of the bayonet 33 is larger than the diameter of the first through hole 36, and the stopper portion does not escape from the pin hole 34 and enter the first through hole 36, so that the bayonet 33 is effectively engaged.
Further preferably, the end of the first rotary key 31 and the end of the second rotary key 41 are provided with the relief groove 50, so that the key hole inside and outside the door is left with a depth long enough for the key to be inserted, and the manufacturing materials are effectively saved and the waste of resources is reduced.
It is further preferred that in order to push the first rotary key 31 to move out of the first lock cylinder 3 after the lock cylinder is broken, two sides of the relief groove 50 on the end of the first rotary key 31 are provided with bosses 51, the two first springs 32 are distributed on two sides of the center line of the first lock cylinder 3, and the first springs 32 are pressed against the end faces of the bosses 51 on two sides of the relief groove 50 through pins 52.
Further preferably, the first lock cylinder 3 is prevented from falling off from the lock case 1, the first lock cylinder 3 is provided with a first annular reserved groove 61 arranged along the circumferential direction of the first lock cylinder 3, a gap is reserved between one side surface of the opening groove 12 on the lock case 1 and one end surface of the shifting fork 2, and the lock cylinder further comprises a first clamping ring 62 which can be embedded into the gap and is clamped on the first reserved groove 61 so that the first lock cylinder 3 is axially fixed relative to the lock case 1.
It is further preferred that in order to prevent the second lock cylinder from falling out of the lock housing 1 under normal conditions, the second lock cylinder 4 is provided with a second annular reserved groove 63 arranged along the circumferential direction of the second lock cylinder, and the lock cylinder further comprises a second clamping ring 64 which can be embedded in the groove 43 of the lock housing 1 and clamped on the second reserved groove 63 so that the second lock cylinder 4 is axially fixed relative to the lock housing 1. Meanwhile, the second reserved groove 63 and the groove 43 can be used as easy breaking grooves of the lock cylinder, and when the lock outside the door is broken by violent external force, the lock cylinder can be broken together at the reserved groove on the second lock cylinder 4 and the groove 43 of the lock shell 1.
Claims (6)
1. The utility model provides a prevent to force two key hole lock cores of unblanking through rupture lock core, including lock shell (1), dress shift fork (2) in lock shell (1) middle part open slot (12), dress respectively in first lock courage (3) and second lock courage (4) in lock shell (1) that are located shift fork (2) both sides, dress first marble subassembly (30) in first lock courage (3) and lock shell (1), dress second lock courage (4) and second marble subassembly (40) in lock shell (1), first lock courage (3), second lock courage (4) are linked with shift fork (2) through first key (31), second key (41) respectively, the flank of first key (31), second key (41) both sides is in respectively slide dress in notch groove (37, 42) of first lock courage, second lock courage (3, 4), its characterized in that: the novel lock is characterized in that the first lock liner (3) is provided with a containing hole (38) for containing a first rotary key (31), the side of the lock shell (1) corresponding to the second lock liner (4) is provided with a groove (43) used as a breaking position for external force damage, the first lock liner (3) is provided with a first spring (32) capable of pushing the first rotary key (31) towards the direction of the shifting fork (2), the peripheral surface of the first rotary key (31) is provided with a pin hole (34), the pin hole (34) is internally provided with a clamping pin (33), a second spring (35) is arranged between the bottom of the pin hole (34) and the bottom end of the clamping pin (33), and the first lock liner (3) is provided with a first through hole (36) matched with the clamping pin (33); the shifting fork (2) is provided with a locking hole (21) which can be mutually aligned with the first through hole (36); in a normal state, the clamping pin (33) is pressed against the inner wall (381) of the accommodating hole (38) under the action of the second spring (35); after the lock core is broken at the groove (43), after the first spring (32) pushes the first rotary key (31) outwards, the bayonet lock (33) passes through the first through hole on the first lock liner (3) under the action of the second spring (35) and then is inserted into the locking hole (21) of the shifting fork (2).
2. A dual key hole lock cylinder for preventing forced unlocking by breaking the lock cylinder as defined in claim 1, wherein: the locking pin (33) is provided with an insertion part (331) which penetrates through a first through hole (36) in the first lock liner (3) and is inserted into a locking hole (21) in the shifting fork (2), and a limiting part (332) which is fixedly connected with the bottom end of the insertion part (331) or is integrally formed, wherein the insertion part (331) is matched with the first through hole (36) and the locking hole (21), and the diameter of the limiting part (332) is larger than that of the first through hole (36) in the first lock liner (3).
3. A dual key hole lock cylinder for preventing forced unlocking by breaking the lock cylinder as defined in claim 1, wherein: and the end parts of the first rotary key (31) and the end part of the second rotary key (41) are respectively provided with a yielding groove (50).
4. A dual key hole lock cylinder for preventing forced unlocking by breaking the lock cylinder as defined in claim 3, wherein: two sides of the abdication groove (50) on the end part of the first rotary key (31) are provided with bosses (51), the two first springs (32) are distributed on two sides of the central line of the first lock liner (3), and the first springs (32) are propped against the end faces of the bosses (51) on two sides of the abdication groove (50) through pins (52).
5. A dual key hole lock cylinder for preventing forced unlocking by breaking the lock cylinder as defined in claim 1, wherein: the lock core is characterized in that the first lock core (3) is provided with an annular first reserved groove (61) arranged along the circumferential direction of the first lock core, a gap is reserved between one side surface of the open groove (12) on the lock shell (1) and one end surface of the shifting fork (2), and the lock core is further provided with a first clamping ring (62) which can be embedded into the gap and clamped on the first reserved groove (61) so that the first lock core (3) is axially fixed relative to the lock shell (1).
6. A dual key hole lock cylinder for preventing forced unlocking by breaking the lock cylinder as defined in claim 1, wherein: the second lock liner (4) is provided with an annular second reserved groove (63) arranged along the circumferential direction of the second lock liner, and the lock cylinder also comprises a second clamping ring (64) which can be embedded into the groove (43) of the lock shell (1) and clamped on the second reserved groove (63) so that the second lock liner (4) is axially fixed relative to the lock shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810748455.XA CN108868337B (en) | 2018-07-10 | 2018-07-10 | Double-keyhole lock cylinder capable of preventing forced unlocking by breaking lock cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810748455.XA CN108868337B (en) | 2018-07-10 | 2018-07-10 | Double-keyhole lock cylinder capable of preventing forced unlocking by breaking lock cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108868337A CN108868337A (en) | 2018-11-23 |
| CN108868337B true CN108868337B (en) | 2023-10-13 |
Family
ID=64300298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810748455.XA Active CN108868337B (en) | 2018-07-10 | 2018-07-10 | Double-keyhole lock cylinder capable of preventing forced unlocking by breaking lock cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108868337B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552552B (en) * | 2019-09-30 | 2024-03-29 | 中山市基信锁芯有限公司 | Integrated lock cylinder structure |
| CN114619243B (en) * | 2022-03-25 | 2023-03-31 | 浙江炬达机械有限公司 | Full-automatic lock cylinder assembling machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1983000178A1 (en) * | 1981-07-14 | 1983-01-20 | Chicago Lock Co | Cylinder lock mechanism |
| CN101092856A (en) * | 2007-07-18 | 2007-12-26 | 潘永明 | Lock core of mechanical lock |
| CN101245674A (en) * | 2008-03-21 | 2008-08-20 | 韦志强 | Anti-theft mortise door lock core |
| CN205348990U (en) * | 2016-01-26 | 2016-06-29 | 温州超鑫锁业有限公司 | Single division of pellet shot from a slingshot lock core is opened to anti -riot power |
| CN106522666A (en) * | 2016-12-24 | 2017-03-22 | 中山市基信锁芯有限公司 | Anti-breaking lock cylinder |
| CN208502455U (en) * | 2018-07-10 | 2019-02-15 | 中山市基信锁芯有限公司 | A kind of conbined public or double key keyhole lock core for preventing from unlocking by force by fractureing lock core |
-
2018
- 2018-07-10 CN CN201810748455.XA patent/CN108868337B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1983000178A1 (en) * | 1981-07-14 | 1983-01-20 | Chicago Lock Co | Cylinder lock mechanism |
| CN101092856A (en) * | 2007-07-18 | 2007-12-26 | 潘永明 | Lock core of mechanical lock |
| CN101245674A (en) * | 2008-03-21 | 2008-08-20 | 韦志强 | Anti-theft mortise door lock core |
| CN205348990U (en) * | 2016-01-26 | 2016-06-29 | 温州超鑫锁业有限公司 | Single division of pellet shot from a slingshot lock core is opened to anti -riot power |
| CN106522666A (en) * | 2016-12-24 | 2017-03-22 | 中山市基信锁芯有限公司 | Anti-breaking lock cylinder |
| CN208502455U (en) * | 2018-07-10 | 2019-02-15 | 中山市基信锁芯有限公司 | A kind of conbined public or double key keyhole lock core for preventing from unlocking by force by fractureing lock core |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108868337A (en) | 2018-11-23 |
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