CN109854088B - Theft-proof lock and matched special key - Google Patents
Theft-proof lock and matched special key Download PDFInfo
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- CN109854088B CN109854088B CN201910201453.3A CN201910201453A CN109854088B CN 109854088 B CN109854088 B CN 109854088B CN 201910201453 A CN201910201453 A CN 201910201453A CN 109854088 B CN109854088 B CN 109854088B
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- marble
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- mounting hole
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- 239000004579 marble Substances 0.000 claims abstract description 161
- 241000755266 Kathetostoma giganteum Species 0.000 claims description 28
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
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- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The anti-theft lock head comprises a lock cylinder sleeve, a lock cylinder and a return assembly; in the locking state, the contact surfaces of the upper round head marble and the upper flat head marble are staggered with the hole wall surface of the lock cylinder hole, the contact surfaces of the left flat head marble and the left round head marble are flush with the hole wall surface of the lock cylinder hole, and the contact surfaces of the right flat head marble and the right round head marble are flush with the hole wall surface of the lock cylinder hole. The special key comprises a key body, wherein the key body comprises a tooth part and a handle part connected to one end of the tooth part, and a hollowed hole is formed in the tooth part. The invention has the advantages that after the foreign matters are inserted into the key hole of the lock cylinder, the left half round head marble and the right half round head marble are necessarily jacked up, so that the contact surfaces of the left flat head marble and the left half round head marble are staggered with the wall surface of the lock cylinder hole, the contact surfaces of the right flat head marble and the right half round head marble are staggered with the wall surface of the lock cylinder hole, the foreign matters are debugged anyway, the lock cylinder is always in a locking state, and the anti-theft performance is good.
Description
Technical Field
The invention relates to a head shrinking part of a cylinder lock, in particular to an anti-theft lock head and a matched special key.
Background
The invention patent number ZL201510576134.2 discloses an anti-theft lock head, which comprises a lock cylinder sleeve, a lock cylinder and a return device.
The lock core is provided with a key slot, an inner marble hole, a left inner mounting hole and a right inner mounting hole. The inner marble holes penetrate through the outer surface of the lock cylinder to the key groove, the left inner mounting hole and the right inner mounting hole are symmetrically arranged on two sides of the inner marble holes, and the inner marble holes penetrate through the intersection of the inner marble holes and the key groove to the outer surface of the lock cylinder.
The lock core sleeve is provided with a lock core hole, an outer marble hole, a left outer mounting hole and a right outer mounting hole, and the outer marble hole, the left outer mounting hole and the right outer mounting hole correspond to the inner marble hole, the left inner mounting hole and the right inner mounting hole respectively. The outer marble hole, the left outer mounting hole and the right outer mounting hole are all communicated with the lock core hole from the outer surface of the lock core sleeve.
The lock core is installed in the lock core hole on the lock core sleeve, and the lock core can rotate in the lock core hole. In the locking state, the inner marble hole is communicated with the outer marble hole, the left inner mounting hole is communicated with the left outer mounting hole, the right inner mounting hole is communicated with the right outer mounting hole, the outer marble hole and the inner marble hole are sequentially provided with an upper spring, an upper flat marble and an upper half round marble, and the outer marble hole is sealed by a plug.
The return device comprises a left spring, a left flat head marble and a left half round head marble which are sequentially arranged in a left inner mounting hole and a left outer mounting hole, and a right spring, a right flat head marble and a right half round head marble which are symmetrically arranged in a right inner mounting hole and a right outer mounting hole, and the left outer mounting hole and the right outer mounting hole are sealed through plugs.
In the locking state, the left half round head marble and the right half round head marble respectively push the upper half round head marble under the action of the left spring and the right spring in a resultant force mode, so that the contact surface of the upper half round head marble and the upper flat head marble is staggered with the hole wall surface of the lock core hole. In the locking state, the contact surface of the left flat head marble and the left half round head marble is staggered with the wall surface of the lock cylinder hole. The contact surface of the right flat head marble and the right half round head marble is staggered with the wall surface of the lock core hole.
In the unlocking state, the left half round head marble and the right half round head marble are extruded by the key and respectively retract into the left inner mounting hole and the right inner mounting hole, and the upper half round head marble is jacked up or fallen down along with the tooth of the key. At this time, the contact surface of the left truncated marble and the left half round marble is flush with the wall surface of the lock cylinder hole, and the contact surface of the right truncated marble and the right half round marble is flush with the wall surface of the lock cylinder hole. The contact surface of the upper semi-round head marble and the upper flat head marble is flush with the wall surface of the lock cylinder hole. The lock core can be driven by the key to rotate in the lock core hole.
The lock head of the anti-theft lock has the following defects: in the locking state, the left semicircle head marble and the right semicircle head marble are respectively arranged in the lock core, so that a certain movable space is provided for foreign matters to be inserted into the key hole.
After the foreign matter is inserted into the key hole of the lock core, the end surfaces of the left half round head marble and the right half round head marble are respectively flush with the hole wall surface of the lock core hole after debugging and fingering, so that the lock is opened, and potential safety hazards exist.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an anti-theft lock head, which solves the problems that the existing anti-theft lock head has a certain movable space after foreign matters are inserted into a key hole of a lock core, and then has a certain unlocking probability and potential safety hazard.
The technical scheme of the invention is as follows: the anti-theft lock head comprises a lock cylinder sleeve, a lock cylinder and a return assembly;
the lock core is provided with a key slot, an inner marble hole, a left inner mounting hole and a right inner mounting hole; the left inner mounting hole and the right inner mounting hole are symmetrically arranged at two sides of the inner marble hole and respectively penetrate through the outer surface of the lock cylinder from the junction of the inner marble hole and the key slot;
the lock core sleeve is provided with a lock core hole, an outer marble hole, a left outer mounting hole and a right outer mounting hole, and the outer marble hole, the left outer mounting hole and the right outer mounting hole correspond to the inner marble hole, the left inner mounting hole and the right inner mounting hole respectively; the outer marble hole, the left outer mounting hole and the right outer mounting hole are all communicated from the outer surface of the lock cylinder sleeve to the lock cylinder hole;
the lock cylinder is arranged in a lock cylinder hole on the lock cylinder sleeve, and the lock cylinder can rotate in the lock cylinder hole; in the locking state, the inner marble hole is communicated with the outer marble hole, the left inner mounting hole is communicated with the left outer mounting hole, and the right inner mounting hole is communicated with the right outer mounting hole;
the return assembly comprises an upper plug, an upper spring, an upper flat-head marble and an upper half-round-head marble which are sequentially arranged in the outer marble hole and the inner marble hole from outside to inside; the left plug, the left spring, the left flat head marble and the left half round head marble are sequentially arranged in the left inner mounting hole and the left outer mounting hole from outside to inside; the device also comprises a right plug, a right spring, a right flat head marble and a right half round head marble which are sequentially and symmetrically arranged in the right inner mounting hole and the right outer mounting hole from outside to inside;
in the locking state, the left round-head marble and the right round-head marble respectively push the upper round-head marble under the action of the left spring and the right spring in a resultant force mode, so that the contact surface of the upper round-head marble and the upper flat-head marble is staggered with the hole wall surface of the lock cylinder hole, the contact surface of the left flat-head marble and the left round-head marble is flush with the hole wall surface of the lock cylinder hole, and the contact surface of the right flat-head marble and the right round-head marble is flush with the hole wall surface of the lock cylinder hole.
The technical scheme of the invention is as follows: the special key for the anti-theft lock head comprises a key body, wherein the key body comprises a tooth part and a handle part connected to one end of the tooth part, teeth matched with the upper half-round head marble are arranged at the edge of the tooth part, hollowed holes are formed in the tooth part, and the hollowed holes penetrate through the end faces of two sides of the tooth part;
when the tooth part of the key body is completely inserted into the key slot of the lock core (namely in an unlocking state), the upper round-head marble is contacted with the tooth, so that the contact surface of the upper round-head marble and the upper flat-head marble is level with the hole wall surface of the lock core hole; and the left round-head marble and the right round-head marble are contacted through the hollowed holes, so that the contact surface of the left flat-head marble and the left round-head marble is kept flush with the wall surface of the lock cylinder hole, and the contact surface of the right flat-head marble and the right round-head marble is kept flush with the wall surface of the lock cylinder hole.
The invention further adopts the technical scheme that: the hollow hole is strip-shaped, one side of the hollow hole along the length direction is provided with a plurality of sections of guide surfaces, and the guide surfaces are inclined surfaces or cambered surfaces
Compared with the prior art, the invention has the following advantages:
after the foreign matter is inserted into the key hole of the lock cylinder, the left half round head marble and the right half round head marble are necessarily jacked up, so that the contact surface of the left flat head marble and the left half round head marble is staggered with the wall surface of the lock cylinder hole, the contact surface of the right flat head marble and the right half round head marble is staggered with the wall surface of the lock cylinder hole, at this time, the foreign matter is debugged anyway, the lock cylinder is always in a locking state, and the anti-theft performance is good.
After the special key is inserted into the key hole of the lock core, the left and right half round head pins still keep the original positions through the hollowed holes on the tooth parts, namely, the special key can not jack the left and right half round head pins, and only the end face of the upper half round head pin can be jacked or fallen to the position of the wall surface of the lock core hole, so that the lock can be normally unlocked.
The invention is further described below with reference to the drawings and examples.
Drawings
FIG. 1 is a schematic view of the structure of the present invention in a locked state;
FIG. 2 is a schematic view of the structure of the present invention in a foreign object unlocking state;
FIG. 3 is a schematic view of the structure of the present invention in a special key unlocking state;
FIG. 4 is a schematic diagram of the structure of a special key;
fig. 5 is a cross-sectional view A-A of fig. 4.
Detailed Description
Example 1:
as shown in fig. 1-3, the anti-theft lock head comprises a lock cylinder 1, a lock cylinder sleeve 2 and a return assembly.
The lock core 1 is provided with a key slot 11, an inner marble hole, a left inner mounting hole and a right inner mounting hole; the left inner mounting hole and the right inner mounting hole are symmetrically arranged at two sides of the inner marble hole.
The lock core sleeve 2 is provided with a lock core hole, an outer marble hole, a left outer mounting hole and a right outer mounting hole, and the outer marble hole, the left outer mounting hole and the right outer mounting hole respectively correspond to the inner marble hole, the left inner mounting hole and the right inner mounting hole.
The lock cylinder 1 is mounted in a cylinder bore in the cylinder jacket 2 and is rotatable in the cylinder bore. In the locking state, the inner marble hole is communicated with the outer marble hole, the left inner mounting hole is communicated with the left outer mounting hole, and the right inner mounting hole is communicated with the right outer mounting hole.
The return assembly comprises an upper plug 31, an upper spring, an upper truncated marble 32 and an upper half-round marble 33 which are sequentially arranged in the outer marble hole and the inner marble hole from outside to inside. And a left plug 34, a left spring, a left truncated marble 35 and a left half round marble 36 which are sequentially installed in the left inner installation hole and the left outer installation hole from outside to inside. And a right plug 37, a right spring, a right truncated marble 38 and a right half round marble 39 which are sequentially and symmetrically arranged in the right inner mounting hole and the right outer mounting hole from outside to inside.
In the locking state, the contact surfaces of the upper round-head marble 33 and the upper flat-head marble 32 are staggered with the hole wall surface of the lock cylinder hole, the contact surfaces of the left flat-head marble 35 and the left round-head marble 36 are flush with the hole wall surface of the lock cylinder hole, the contact surfaces of the right flat-head marble 38 and the right round-head marble 39 are flush with the hole wall surface of the lock cylinder hole, and the left round-head marble 36 and the right round-head marble 39 are in contact.
As shown in fig. 4-5, the special key applied to the anti-theft lock head comprises a key body, wherein the key body comprises a tooth part 41 and a handle part 42 connected to one end of the tooth part 41, teeth 411 matched with the upper half round head marble 33 are arranged at the edge of the tooth part 41, hollow holes 412 are arranged on the tooth part 41, and the hollow holes 412 penetrate through two side end surfaces of the tooth part 41.
When the tooth portion 41 of the matched key body is fully inserted into the key slot 11 of the key cylinder 1 (i.e., in the unlocking state), the upper round pin 33 contacts with the tooth 411, so that the contact surfaces of the upper round pin 33 and the upper round pin 32 are flush with the wall surface of the key cylinder hole, and the left round pin 36 and the right round pin 39 contact through the hollowed hole 412, so that the contact surfaces of the left round pin 35 and the left round pin 36 are kept flush with the wall surface of the key cylinder hole, and the contact surfaces of the right round pin 38 and the right round pin 39 are kept flush with the wall surface of the key cylinder hole.
Preferably, the hollow hole 412 is a strip, and a side along the length direction is provided with a plurality of sections of guide surfaces, wherein the guide surfaces are inclined surfaces or cambered surfaces. The guiding surface plays a role in facilitating the smooth insertion of the tooth part 41 of the key body into the key slot 11 of the lock core 1, and the key cannot be blocked by the left and right half round head marble.
Brief description of the invention application:
as shown in fig. 2, after the foreign matter 5 is inserted into the key hole of the lock core, the left half round head marble and the right half round head marble are necessarily jacked up, so that the contact surfaces of the left flat head marble and the left half round head marble are staggered with the wall surface of the lock core hole, the contact surfaces of the right flat head marble and the right half round head marble are staggered with the wall surface of the lock core hole, at this time, the foreign matter is debugged anyway, the lock core is always in a locking state, and the anti-theft performance is good.
As shown in fig. 3, after the tooth portion 41 of the matched key body is inserted into the key hole of the lock cylinder, the left and right round-head pins still maintain the original positions through the hollowed holes on the tooth portion, that is, the tooth portion will not push the left and right round-head pins open, but only will push or drop the end face of the upper round-head pin to the position of the wall surface of the lock cylinder hole, so that the lock can be normally unlocked.
Claims (3)
1. The anti-theft lock head comprises a lock cylinder sleeve, a lock cylinder and a return assembly;
the lock core is provided with a key slot, an inner marble hole, a left inner mounting hole and a right inner mounting hole; the left inner mounting hole and the right inner mounting hole are symmetrically arranged at two sides of the inner marble hole;
the lock core sleeve is provided with a lock core hole, an outer marble hole, a left outer mounting hole and a right outer mounting hole, and the outer marble hole, the left outer mounting hole and the right outer mounting hole correspond to the inner marble hole, the left inner mounting hole and the right inner mounting hole respectively;
the lock cylinder is arranged in a lock cylinder hole on the lock cylinder sleeve, and the lock cylinder can rotate in the lock cylinder hole; in the locking state, the inner marble hole is communicated with the outer marble hole, the left inner mounting hole is communicated with the left outer mounting hole, and the right inner mounting hole is communicated with the right outer mounting hole;
the return assembly comprises an upper plug, an upper spring, an upper flat-head marble and an upper half-round-head marble which are sequentially arranged in the outer marble hole and the inner marble hole from outside to inside; the left plug, the left spring, the left flat head marble and the left half round head marble are sequentially arranged in the left inner mounting hole and the left outer mounting hole from outside to inside; the device also comprises a right plug, a right spring, a right flat head marble and a right half round head marble which are sequentially and symmetrically arranged in the right inner mounting hole and the right outer mounting hole from outside to inside;
the method is characterized in that: in the locking state, the contact surfaces of the upper truncated marble and the upper truncated marble are staggered with the hole wall surface of the lock cylinder hole, the contact surfaces of the left truncated marble and the left truncated marble are flush with the hole wall surface of the lock cylinder hole, and the contact surfaces of the right truncated marble and the right truncated marble are flush with the hole wall surface of the lock cylinder hole;
in a locking state, the left half round head marble and the right half round head marble respectively push the upper half round head marble under the action of the left spring and the right spring;
when the tooth part of the key body is completely inserted into the key slot of the lock cylinder, the upper round-head marble is contacted with the tooth, so that the contact surface of the upper round-head marble and the upper flat-head marble is flush with the hole wall surface of the lock cylinder hole; and the left round-head marble and the right round-head marble are contacted through the hollowed hole of the key body, so that the contact surface of the left flat-head marble and the left round-head marble is kept flush with the wall surface of the lock cylinder hole, and the contact surface of the right flat-head marble and the right round-head marble is kept flush with the wall surface of the lock cylinder hole.
2. The special key is applied to the anti-theft lock head as claimed in claim 1, and is characterized in that: the key comprises a key body, wherein the key body comprises a tooth part and a handle part connected to one end of the tooth part, the edge of the tooth part is provided with teeth matched with an upper semicircle head marble, the tooth part is provided with hollowed holes, and the hollowed holes penetrate through the end faces of the two sides of the tooth part.
3. The special key as defined in claim 2, wherein: the hollowed-out hole is strip-shaped, one side of the hollowed-out hole along the length direction is provided with a plurality of sections of guide surfaces, and the guide surfaces are inclined surfaces or cambered surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910201453.3A CN109854088B (en) | 2019-03-18 | 2019-03-18 | Theft-proof lock and matched special key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910201453.3A CN109854088B (en) | 2019-03-18 | 2019-03-18 | Theft-proof lock and matched special key |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109854088A CN109854088A (en) | 2019-06-07 |
| CN109854088B true CN109854088B (en) | 2023-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910201453.3A Active CN109854088B (en) | 2019-03-18 | 2019-03-18 | Theft-proof lock and matched special key |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110439369A (en) * | 2019-08-14 | 2019-11-12 | 龙卓思 | A kind of ball lock head that anti-skill is opened |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6471975A (en) * | 1987-08-26 | 1989-03-16 | Keller Ernst | Rotating lock cylinder |
| RU2172380C2 (en) * | 1995-01-09 | 2001-08-20 | Ай.Эм.Эс.Текнолоджис А.С. | Lock bolthead |
| CN1664287A (en) * | 2004-03-01 | 2005-09-07 | 林秀英 | Method and device for reverse unlocking |
| CN102619397A (en) * | 2012-02-23 | 2012-08-01 | 陈志洪 | Antitheft lock capable of preventing technical unlocking and antitheft key |
| CN202926030U (en) * | 2012-05-30 | 2013-05-08 | 杨子健 | Night lock and key thereof |
| CN204941066U (en) * | 2015-09-11 | 2016-01-06 | 钟积桥 | Anti-theft lock head |
| CN209924632U (en) * | 2019-03-18 | 2020-01-10 | 钟积桥 | Anti-theft lock and matched special key |
-
2019
- 2019-03-18 CN CN201910201453.3A patent/CN109854088B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6471975A (en) * | 1987-08-26 | 1989-03-16 | Keller Ernst | Rotating lock cylinder |
| RU2172380C2 (en) * | 1995-01-09 | 2001-08-20 | Ай.Эм.Эс.Текнолоджис А.С. | Lock bolthead |
| CN1664287A (en) * | 2004-03-01 | 2005-09-07 | 林秀英 | Method and device for reverse unlocking |
| CN102619397A (en) * | 2012-02-23 | 2012-08-01 | 陈志洪 | Antitheft lock capable of preventing technical unlocking and antitheft key |
| CN202926030U (en) * | 2012-05-30 | 2013-05-08 | 杨子健 | Night lock and key thereof |
| CN204941066U (en) * | 2015-09-11 | 2016-01-06 | 钟积桥 | Anti-theft lock head |
| CN209924632U (en) * | 2019-03-18 | 2020-01-10 | 钟积桥 | Anti-theft lock and matched special key |
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| Publication number | Publication date |
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| CN109854088A (en) | 2019-06-07 |
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