CN2658308Y - Anti-theft lock with protection piece and stop groove on lock core - Google Patents
Anti-theft lock with protection piece and stop groove on lock core Download PDFInfo
- Publication number
- CN2658308Y CN2658308Y CN 200320113865 CN200320113865U CN2658308Y CN 2658308 Y CN2658308 Y CN 2658308Y CN 200320113865 CN200320113865 CN 200320113865 CN 200320113865 U CN200320113865 U CN 200320113865U CN 2658308 Y CN2658308 Y CN 2658308Y
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- CN
- China
- Prior art keywords
- protective sheet
- lock core
- notch
- lock
- protective
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a theftproof lock head with a lock core with a guard piece and a stop groove. The utility model is characterized in that a circular arc-shaped guard piece notch which passes through a marble hole is arranged in a lock core, the stop groove is arranged in the notch and is in the same cross section with the marble hole, and the diameter of the stop groove is the same as that of the marble hole. A circular arc-shaped guard piece is arranged in the guard piece notch and is provided with a round hole, and the diameter of the round hole is the same as that of the marble hole. The utility model can be effectively prevented from being unlocked by foreign matters like master keys. When the lock core is unlocked wrongly and rotates to a certain position, the lock core is clamped, can not continuously rotate and can not rotate backwards, and a door lock is in a locking state, and a theft is without resort.
Description
Technical field:
The utility model relates to a kind of mechanical lock that uses key rotation breakdown.Be meant that specifically a kind of lock core has the anti-theft lock end of protective sheet and locking groove, affiliated field is the safety precaution field.
Background technology:
The theftproof lock that existing people use mainly contains electronic safety lock and mechanical anti-theft lock two classes.Electronic safety lock is very unstable, and theftproof performance is low, and easy the opening it of people's energy arranged.Existing machinery lockset style is a lot.In order to improve theftproof performance, mostly be by the quantity that increases pellet shot from a slingshot and attempt to achieve the goal.In order to prevent master key and so on foreign matter breakdown, the Taiwanese has designed a kind of keyhole channel bending, key is the theftproof lock of table chain.Patent No. ZL99235273.8 technology discloses the gene type theft-proof lock that a kind of keyhole channel is a helical orbit shape.These technology increase on theftproof performance, but because of its complex structure, comparatively difficult during manufacturing, be not suitable for large-scale production.Therefore be difficult to apply.
Design content:
Using master key and so on foreign matter to support at the robber dials pellet shot from a slingshot and is equipped with the method for rotating external force pirate of the open lockset, the utility model discloses and a kind ofly can prevent effectively that the lock core of master key breakdown from having the anti-theft lock end of protective sheet and locking groove, its technical scheme is: except that the basic structure with tapered end, have circular arc protective sheet notch on the lock core through the cylindrical billiard hole, in the protective sheet notch, have with the equal diameters and the locking groove in same cross section in cylindrical billiard hole of process.The protective sheet notch is built-in with the circular arc protective sheet.Have the circular hole identical on the protective sheet, for the turnover when locking and open of inside and outside cylindrical billiard with the cylindrical billiard bore dia.The width and the protective sheet of protective sheet notch are complementary, but length is greater than protective sheet, and guarantee that the circular hole on the protective sheet can move to and the locking groove contraposition.When normal the unlatching, protective sheet is rotated simultaneously with lock core.
Description of drawings:
Fig. 1 is the utility model structural profile schematic diagram;
The original state schematic diagram of Fig. 2 when to be that foreign matter is improper open;
Fig. 3 is the improper view that is opened into when stuck;
Fig. 4 is the structure chart of lock core and protective sheet notch;
Fig. 5 is the A-A figure of Fig. 4;
Fig. 6 is Key structure figure;
Fig. 7 is the protective sheet topology view.
(1) lock tube among the figure, (2) lock core, (3) protective sheet notch, (4) protective sheet, (5) locking groove, (6) interior cylindrical billiard, (7) outside cylinder pellet shot from a slingshot, (8) spring, (9) keyhole, (10) cylindrical billiard hole, (11) protective sheet circular hole.
The specific embodiment:
Referring to Fig. 1, Fig. 4, Fig. 5, Fig. 7, have circular arc protective sheet notch (3) on the lock core (2) through cylindrical billiard hole (10), in protective sheet notch (3), have with cylindrical billiard hole (10) equal diameters and the locking groove in same cross section (5) of process, protective sheet notch (3) is built-in with circular arc protective sheet (4).The width of protective sheet notch (3) and protective sheet (4) are complementary, but length is greater than protective sheet (4), and guarantee that the circular hole (11) with cylindrical billiard hole (10) equal diameters that has on the protective sheet (4) can move to and locking groove (5) contraposition.Referring to Fig. 2, Fig. 3, dial pellet shot from a slingshot (6) and be equipped with the external force rotary locking cylinder when supporting with foreign matter, outer pellet shot from a slingshot (7) is by being supported in the protective sheet (4), but the internal pellet shot from a slingshot of protective sheet (6) forms a ridge, to interior pellet shot from a slingshot (6) can not be entered in the circular hole (11) in the protective sheet (4).This moment is because protective sheet (4) has the relative displacement space in protective sheet notch (3), thereby lock core can rotate, and protective sheet (4) is tacked by outer pellet shot from a slingshot (7), can not rotate with lock core.When lock core (2) forwards circular hole (11) contraposition on locking groove (5) and the protective sheet to, outer pellet shot from a slingshot (7) is owing to the effect of the spring (8) in the lock tube (1) enters in the locking groove (5), this moment, lock core was stuck, and can not be rotated further and can not turn round, and after this robber no longer includes chance and will lock breakdown.
Claims (3)
1, a kind of lock core has the anti-theft lock end of protective sheet and protective trough, it is characterized in that: except that basic structure with tapered end, have circular arc protective sheet notch on the lock core through the cylindrical billiard hole, in the protective sheet notch, have with the equal diameters and the locking groove in same cross section in cylindrical billiard hole of process.The protective sheet notch is built-in with the circular arc protective sheet.Have the circular hole identical on the protective sheet, for the turnover when locking and open of inside and outside cylindrical billiard with the cylindrical billiard bore dia.The width and the protective sheet of protective sheet notch are complementary, but length is greater than protective sheet, and guarantee that the circular hole on the protective sheet can move to and the locking groove contraposition.When normal the unlatching, protective sheet is rotated simultaneously with lock core.
2, lock core according to claim 1 has the anti-theft lock end of protective sheet and protective trough, it is characterized in that protective sheet notch interlude position greater than the pellet shot from a slingshot bore dia, and two section width is less than the pellet shot from a slingshot bore dia.
3, having the anti-theft lock end of protective sheet and protective trough according to claim 1 and 2 described lock cores, it is characterized in that the anti-theft device that is made of protective sheet and locking groove can be one, also can be a plurality of.Protective sheet can be a guard ring that entangles lock core and axially have row's circular hole, and locking groove can be an axial rectangle notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320113865 CN2658308Y (en) | 2003-10-16 | 2003-10-16 | Anti-theft lock with protection piece and stop groove on lock core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320113865 CN2658308Y (en) | 2003-10-16 | 2003-10-16 | Anti-theft lock with protection piece and stop groove on lock core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2658308Y true CN2658308Y (en) | 2004-11-24 |
Family
ID=34345116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320113865 Expired - Fee Related CN2658308Y (en) | 2003-10-16 | 2003-10-16 | Anti-theft lock with protection piece and stop groove on lock core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2658308Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1869383B (en) * | 2006-05-23 | 2010-08-11 | 杜胜勇 | Anti-stick cylinder lock master |
-
2003
- 2003-10-16 CN CN 200320113865 patent/CN2658308Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1869383B (en) * | 2006-05-23 | 2010-08-11 | 杜胜勇 | Anti-stick cylinder lock master |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |