CN2297520Y - Billiard latch preventing using master key - Google Patents
Billiard latch preventing using master key Download PDFInfo
- Publication number
- CN2297520Y CN2297520Y CN 97204972 CN97204972U CN2297520Y CN 2297520 Y CN2297520 Y CN 2297520Y CN 97204972 CN97204972 CN 97204972 CN 97204972 U CN97204972 U CN 97204972U CN 2297520 Y CN2297520 Y CN 2297520Y
- Authority
- CN
- China
- Prior art keywords
- slingshot
- pellet shot
- short
- length
- lock
- 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
Landscapes
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The utility model relates to a cylinder lock preventing unlocking by a master key, which comprises a lock body, a lock rod, a lock core, and a key. A group of cylinder holes are arranged in the lock body, and a lone cylinder is additionally arranged in each of at least two cylinder holes. The utility model can effectively prevent the unlocking by the master key, and has the advantages of good anti-theft function, simple structure, easy fabrication, and convenient operation.
Description
The utility model relates to a kind of cylinder lock that prevents unlocked by universal key.
Existing cylinder lock is difficult to generally prevent that unlocked by universal key, main cause from being that pellet shot from a slingshot all is pressed in the lock body by master key in the lock, thereby rotatable lock core is opened lock.And the existing billiards lock structure complexity that prevents unlocked by universal key, cost height, use inconvenience.
The purpose of this utility model overcomes above-mentioned the deficiencies in the prior art exactly, and a kind of simple in structure, easy to use, easy to manufacture, cylinder lock that can effectively prevent unlocked by universal key is provided.
The utility model includes lock body, locking bar, lock core and key, is provided with one group of pellet shot from a slingshot hole in the lock body, and quantity is more than two.Wherein, have at least all to have additional a long marble in two pellet shot from a slingshot holes, corresponding with it spring is short spring.Set up in the pellet shot from a slingshot hole of long marble, have at least in the pellet shot from a slingshot hole and be provided with short pellet shot from a slingshot, from the center to outer rim a short pellet shot from a slingshot, short spring, long marble and plug are housed successively in this hole, are followed successively by two little pellets shot from a slingshot, short spring, long marble and plug from the center to outer rim in all the other pellet shot from a slingshot holes.
Short spring and long marble being set substituting long spring in original pellet shot from a slingshot hole, mainly is little pellet shot from a slingshot all to be pressed into lock body when preventing to insert master key in the keyhole, and lock core is rotated open lock.Because the stroke of short spring is little, when inserting master key in the utility model keyhole, little pellet shot from a slingshot can not all be pressed into lock body, both made is just in time to have a little pellet shot from a slingshot all to be pressed into lock body, because of also having at least a short pellet shot from a slingshot can not all be pressed into lock body, thereby also can't rotational lock core and to open lock.
The utility model is compared with existing cylinder lock, can effectively prevent to use unlocked by universal key, and have excellent antitheft function.This locking making method and using method are all the same with existing cylinder lock, thereby simple in structure, easy to manufacture, easy to use.
Be described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the utility model structural representation.
Fig. 2 is the upward view of Fig. 1.
Among the figure: 1, key 2, keyhole 3, lock core 4, short pellet shot from a slingshot 5, pellet shot from a slingshot hole 6, lock body 7, plug 8, long marble 9, short spring 10,11, little pellet shot from a slingshot
Suppose that the distance of place, convex edge along the keyhole direction to the lock core edge is H in the keyhole, the length L of short spring should be less than H more than or equal to 3/4ths H, that is: H＞L 〉=3H/4.Be provided with long marble length in the pellet shot from a slingshot hole of little pellet shot from a slingshot and should equal the length that the pellet shot from a slingshot hole length deducts short spring, two little pellets shot from a slingshot and plug.The length N of short pellet shot from a slingshot should be less than or equal to H greater than 3/4ths H, that is: H 〉=N＞3H/4.The length of the long marble that matches with it should equal the length that the pellet shot from a slingshot hole length deducts short spring, short pellet shot from a slingshot and plug.Shape, the structure of submissile 10,11 and the medium and small pellet shot from a slingshot of existing cylinder lock are identical.The shape and structure of key 1 does not have specific (special) requirements yet, from intuitively with existing marble lock key indifference.Thereby the utility model also is suitable for the transformation of the way of existing cylinder lock.
Claims (3)
1, a kind of preventing universal key cylinder lock includes lock body, locking bar, lock core and key, is provided with one group of pellet shot from a slingshot hole in the lock body, it is characterized in that having at least all having additional a long marble in two pellet shot from a slingshot holes, and corresponding with it spring is short spring; Set up in the pellet shot from a slingshot hole of long marble, have at least in the pellet shot from a slingshot hole and be provided with short pellet shot from a slingshot, from the center to outer rim a short pellet shot from a slingshot, short spring, long marble and plug are housed successively in this hole, are followed successively by two little pellets shot from a slingshot, short spring, long marble and plug from the center to outer rim in all the other pellet shot from a slingshot holes.
2, preventing universal key cylinder lock as claimed in claim 1 is characterized in that the distance of place, convex edge along keyhole to the lock core edge is H in the keyhole as establishing, and the length of short spring should be less than H more than or equal to 3/4ths H; The length that is provided with the long marble in the pellet shot from a slingshot hole of little pellet shot from a slingshot should equal the length that the pellet shot from a slingshot hole length deducts short spring, two little pellets shot from a slingshot and plug.
3, preventing universal key cylinder lock as claimed in claim 1 or 2 is characterized in that the length of short pellet shot from a slingshot should be greater than 3/4ths H, is less than or equal to H; The length of the long marble that matches with it should equal the length that the pellet shot from a slingshot hole length deducts short spring, short pellet shot from a slingshot and plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97204972 CN2297520Y (en) | 1997-04-28 | 1997-04-28 | Billiard latch preventing using master key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97204972 CN2297520Y (en) | 1997-04-28 | 1997-04-28 | Billiard latch preventing using master key |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2297520Y true CN2297520Y (en) | 1998-11-18 |
Family
ID=33925315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97204972 Expired - Fee Related CN2297520Y (en) | 1997-04-28 | 1997-04-28 | Billiard latch preventing using master key |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2297520Y (en) |
-
1997
- 1997-04-28 CN CN 97204972 patent/CN2297520Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2297520Y (en) | Billiard latch preventing using master key | |
| CN2318339Y (en) | Cylinder lock capable of preventing open by any universal key | |
| CN2178262Y (en) | Theft-proof cylinder lock with ball or tumbler pin | |
| CN2366504Y (en) | Double open and spiral type theft-proof lock | |
| CN2284276Y (en) | Plain code combined lock | |
| CN2220509Y (en) | Anti-theft safety lock | |
| CN2238880Y (en) | Automatic bolt-limited double-head door lock | |
| CN2170348Y (en) | Limit lock core | |
| CN2173295Y (en) | Screw type cylinder lock | |
| CN2313013Y (en) | Mechanical puzzle lock | |
| CN2135623Y (en) | Robber-proof spring lock | |
| CN2151204Y (en) | Lock core with dual keys | |
| CN2460682Y (en) | Trick lockset | |
| CN2435470Y (en) | Cylinder key theft-proof lock | |
| CN2324233Y (en) | Encryption lock | |
| CN2340853Y (en) | Multi-hole tumbler-pin lock core | |
| CN2518971Y (en) | Safety cylinder lock | |
| CN2487826Y (en) | Y-shaped key lock | |
| CN2276538Y (en) | Special lock casing for core-plug door lock | |
| CN2371285Y (en) | Magnetic mechanical composite type lock and its key | |
| CN2202170Y (en) | Lock for motor-driven tricycle | |
| CN2287190Y (en) | Lock | |
| CN2142136Y (en) | High-performance anti-theft lock | |
| CN2345633Y (en) | Honeycomb lock | |
| CN2303057Y (en) | No lock ring type theft-proof padlock |
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 |