CN2758392Y - Antitheft pellet lock - Google Patents
Antitheft pellet lock Download PDFInfo
- Publication number
- CN2758392Y CN2758392Y CN200520032756.0U CN200520032756U CN2758392Y CN 2758392 Y CN2758392 Y CN 2758392Y CN 200520032756 U CN200520032756 U CN 200520032756U CN 2758392 Y CN2758392 Y CN 2758392Y
- Authority
- CN
- China
- Prior art keywords
- slingshot
- pellet shot
- lock
- lock core
- antitheft
- 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
Links
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- Lock And Its Accessories (AREA)
Abstract
The utility model relates to an antitheft bullet lock which comprises a lock body (1), a lock core (2), a lower limiting bullet (3), an upper limiting bullet (4) and a pressure restoring spring (5), wherein the upper part of the upper limiting bullet (4) is provided with a third limiting bullet (6) which is arranged in the pressure restoring spring (5), and the third limiting bullet (6) and the upper limiting bullet (4) can be integrally combined. The utility model can thoroughly and completely resist the fixed tooth-shaped or movable tooth-shaped universal key.
Description
Technical field
The utility model relates to a kind of lockset, particularly relates to a kind of antitheft sylinder.
Background technology
The structure of existing cylinder lock mainly comprises lock body, lock core, lower limit pellet shot from a slingshot, upper limit pellet shot from a slingshot and pressure back-moving spring.When with corresponding when key operated, the interface of the upper and lower spacing pellet shot from a slingshot of cylinder lock and lock core arc surface match, the lock core rotation, and lock is unlocked; And during with the master key pirate of the open, cylinder lock lower limit pellet shot from a slingshot lower end is crossed to be peaked at outside the lock core, is on the lock core arc surface, and lock core can rotate equally, and lock is by pirate of the open.At present in the cylinder lock anti-theft technique, usually adopt to increase key quantity, change the key shape or adopt horizontal type to advance spoon method and replace the vertical spoon method of advancing, make certain degree of difficulty when moving the lower limit pellet shot from a slingshot and attempted the top to master key, this has certain effect when taking precautions against the master key pirate of the open of fixing profile of tooth, has no effect but take precautions against at the master key of activity profile of tooth.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of cylinder lock of taking precautions against the master key pirate of the open.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of antitheft sylinder, comprise lock body, lock core, lower limit pellet shot from a slingshot, upper limit pellet shot from a slingshot and pressure back-moving spring, above described upper limit pellet shot from a slingshot, be provided with the 3rd position-limited marble, and the 3rd position-limited marble is positioned among the pressure back-moving spring.Described the 3rd position-limited marble can be made one with the upper limit pellet shot from a slingshot.
Owing to above the upper limit pellet shot from a slingshot, be provided with the 3rd position-limited marble, and the 3rd position-limited marble is positioned among the pressure back-moving spring, when master key moves the lower limit pellet shot from a slingshot and attempted to peak at outside the lock core, the displacement stroke of lower limit pellet shot from a slingshot is subjected to the constraint of the 3rd position-limited marble, thereby the lower limit pellet shot from a slingshot can not be crossed and be peaked at outside the lock core arc surface, and no matter this be fixing profile of tooth or the master key of activity profile of tooth all has thoroughly, anti-theft effect completely to taking precautions against; Simultaneously, because the 3rd position-limited marble is positioned among the pressure back-moving spring, when normally unblanking, the 3rd position-limited marble can not influence the reset function of compression spring.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail.
Figure one is the cross-sectional view that antitheft sylinder is treated opening.
Figure two is cross-sectional view of the stolen state of antitheft sylinder.
The specific embodiment
Shown in figure one, antitheft sylinder comprises lock body 1, lock core 2, lower limit pellet shot from a slingshot 3, upper limit pellet shot from a slingshot 4 and pressure back-moving spring 5.Above described upper limit pellet shot from a slingshot 4, be provided with the 3rd position-limited marble 6, and the 3rd position-limited marble 6 is positioned among the pressure back-moving spring 5.The length L of the 3rd position-limited marble 6
3Satisfy following condition: L-D
1-L
Down-L
On-D
2＜L
3＜L-D
1-L
On-D
2, wherein L seals the length of 7 upper ends to lock core 2 circular arc solstics, D for the pellet shot from a slingshot mesoporous metal
1Be lock core 2 diameters, L
DownBe the longitudinal length of lower limit pellet shot from a slingshot 3, L
OnBe the longitudinal length of upper limit pellet shot from a slingshot 4, D
2Seal 7 longitudinal length for the pellet shot from a slingshot mesoporous metal.The 3rd position-limited marble 6 can be made one with upper limit pellet shot from a slingshot 4, its length L
3Still satisfy above-mentioned condition.
Operating principle: figure one treats opening for antitheft sylinder is in, wherein lower limit pellet shot from a slingshot 3 is positioned within lock core 2 arc surfaces with the interface of upper limit pellet shot from a slingshot 4.When with corresponding when key operated, antitheft sylinder lower limit pellet shot from a slingshot 3 matches with interface and lock core 2 arc surfaces of upper limit pellet shot from a slingshot 4, and lock core 2 rotates, and lock is unlocked.Shown in figure two, when antitheft sylinder was in stolen state, because the displacement stroke of lower limit pellet shot from a slingshot 3 is subjected to the constraint of the 3rd position-limited marble 6, lower limit pellet shot from a slingshot 3 can not be crossed and be peaked at outside lock core 2 arc surfaces, thereby cylinder lock can not have been played the strick precaution effect to master key by pirate of the open.
Claims (2)
1. antitheft sylinder, comprise lock body (1), lock core (2), lower limit pellet shot from a slingshot (3), upper limit pellet shot from a slingshot (4) and pressure back-moving spring (5), it is characterized in that: be provided with the 3rd position-limited marble (6) in described upper limit pellet shot from a slingshot (4) top, and the 3rd position-limited marble (6) is positioned among the pressure back-moving spring (5).
2. antitheft sylinder according to claim 1 is characterized in that: described the 3rd position-limited marble (6) can be made one with upper limit pellet shot from a slingshot (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200520032756.0U CN2758392Y (en) | 2005-01-06 | 2005-01-06 | Antitheft pellet lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200520032756.0U CN2758392Y (en) | 2005-01-06 | 2005-01-06 | Antitheft pellet lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2758392Y true CN2758392Y (en) | 2006-02-15 |
Family
ID=36078534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200520032756.0U Expired - Fee Related CN2758392Y (en) | 2005-01-06 | 2005-01-06 | Antitheft pellet lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2758392Y (en) |
-
2005
- 2005-01-06 CN CN200520032756.0U patent/CN2758392Y/en not_active Expired - Fee Related
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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 |