CN2373521Y - Double-plunger-latch safety lock - Google Patents
Double-plunger-latch safety lock Download PDFInfo
- Publication number
- CN2373521Y CN2373521Y CN 99223118 CN99223118U CN2373521Y CN 2373521 Y CN2373521 Y CN 2373521Y CN 99223118 CN99223118 CN 99223118 CN 99223118 U CN99223118 U CN 99223118U CN 2373521 Y CN2373521 Y CN 2373521Y
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- China
- Prior art keywords
- key
- bolt
- lock
- latch
- door
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- Expired - Fee Related
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Abstract
The utility model relates to a double-plunger-latch safety lock comprising a sliding latch, a safety latch, a spanner latch key and a moveable latch key. The sliding latch and the safety latch are respectively provided with two key grooves, are respectively arranged in two latch grooves on a rear casing of the lock, and are respectively supported through two springs. The spanner latch key and the sliding latch key are respectively arranged in two latch key chambers on the rear casing of the lock; the springs are respectively used to support the front end of the spanner latch key to be abutted on the safety latch, the front end of the sliding latch key is abutted on the sliding latch, and the rear end is extended into the key groove on the safety latch. The lock is arranged on a theft-proof door, when a lock core is damaged, the door and a door frame can be locked together.
Description
The utility model belongs to a kind of door lock.
Along with the development of the deep and industrial and agricultural production of reforming and opening up to the outside world, the household integral income increases sharply, so theft protection has become the problem that every household is concerned about.Security door has been installed by at present a lot of families.The security door of selling adopts the multiple spot locking mode in the market, has improved the security performance of door.But the burglar has found out the way of destroying lock core, and the lock core that is about to security door destroys the back and takes out, and retracts lock bolt again, and door is opened burglary, has reduced the theftproof performance of security door.
The purpose of this utility model, provide a kind of after the burglar destroys, can be with locked two the door bolt safety locks together of door and doorframe, thus guarantee the theftproof performance of security door.
The purpose of this utility model is achieved through the following technical solutions, that is:
Two door bolt safety locks are made up of lock body and two locking device of sending out.Two locking devices comprise sliding latch, insurance lock bolt, spanner door bolt key and the door bolt key composition that moves about.Lock body is made up of procapsid and back casing, by screw together, sliding latch through hole, pull bar through hole and insurance lock bolt through hole is arranged on lock body.Sliding latch groove, safety latch locked groove, spanner latch key chamber and the latch key chamber that moves about are arranged on back casing.Sliding latch is made of lock bolt and pull bar, fixedlys connected with the lower end of lock bolt and be an overall structure in the upper end of pull bar.Inboard at lock bolt and pull bar has the door bolt of moving about keyway respectively.Sliding latch is arranged in the sliding latch groove on the back casing, lock bolt stretches out outside the lock body from the sliding latch through hole of lock body, and the pull bar through hole of pull bar from lock body stretches out outside the lock body, in the sliding latch groove, the left side of pull bar is provided with support spring, and the upper end of this support spring is replaced on lock bolt.The door bolt key that moves about is arranged in the latch key chamber that moves about on the back casing, and is provided with door bolt key support spring in this latch key chamber, and an end of this door bolt key support spring is replaced on lock body, and its other end is replaced moving about and fastened with a bolt or latch on the diapire of key.In the normal opening movement process of door bolt key of moving about, the front end of fastening key with a bolt or latch that moves about is replaced on sliding latch, insert in the following door bolt key groove of insurance lock bolt the move about rear end of lock bolt, make the insurance lock bolt can not on move, there are upper and lower two door bolt key grooves the inboard of insurance lock bolt, the insurance lock bolt is arranged in the insurance lock bolt groove on the back casing, and insert in the insurance lock bolt through hole of lock body its upper end.In insurance lock bolt groove, be provided with insurance lock bolt support spring, the lower end of this spring is replaced on back casing, its upper end is replaced on the convex of insurance lock bolt, spanner door bolt key is arranged in the spanner latch key chamber on the back casing, in the spanner latch key chamber, also be provided with door bolt key support spring, when the normal opening of sliding latch, spanner door bolt key is replaced at safety lock and is latched.
The upper end cross section of sliding latch and insurance lock bolt is a square or rectangular.
Sliding latch and insurance lock bolt also can adopt cylindrical, lock bolt is for cylindrical sliding latch and insurance lock bolt, it is rotary shifted for it is not produced, sliding latch is provided with positioning spline, upper end at the insurance breech lock is provided with positioning spline, and, it can not be rotated respectively with lock bolt directional bond location.
The utility model is arranged on the security door, matches with safety lock on the security door.The pull bar of sliding latch directly or by connecting rod is connected with the lock core of security door, and when usefulness key open and close door, sliding latch can put in the sliding latch jack or indentation lock body on the doorframe, makes security door be in the pass, opens state.When the burglar wants to reach the purpose of opening the security door burglary with the way of destroying lock core, the inevitable therefore also inevitable pulling downwards of each lock bolt sliding latch of the present utility model that inwardly draws security door after destroying lock core, when the door bolt key groove alignment of moving about on the sliding latch is moved about lock bolt, because the promotion of spring, the front end of door bolt key of moving about just inserts in the lock bar slot on the sliding latch, sliding latch can not be moved, the lock bolt that moves about this moment leaves the following door bolt key groove that safety lock latches, safety lock is latched under the promotion of spring and moves up, insert in the insurance lock latch jack on the doorframe, at this moment, spanner door bolt key is under the promotion of spring, its front end inserts in the key groove of fastening with a bolt that insures on the lock bolt inboard, will insure lock bolt and block and can not move up and down, and it is locked with doorframe to be about to door.When the burglar upwards promotes lock bolt, when the door bolt key groove alignment of moving about on the pull bar is moved about the door bolt key, move about the door bolt key under the effect of spring, its front end inserts moving about on the pull bar and fastens with a bolt or latch in the key groove, sliding latch is stuck, can not move up and down, at this moment insure in the insurance lock latch jack on the lock bolt insertion doorframe, spanner door bolt key this moment its front end under spring promotes inserts in the key groove of fastening with a bolt that insures the lock bolt inboard.Insurance lock bolt, sliding latch is together locked with door and doorframe, security door is not taked destructive measure, can't open security door, thereby improve the theftproof performance of security door.
The utility model is simple in structure, reliable, is applicable on the security door that is installed in esidential building, also is applicable to be installed in warehouse gate, national treasury door, money box door, historical relic shop door, safe care registry door, shop door, garage door etc., reaches the purpose of pick-proof and anti-theft.
Fig. 1 is a kind of embodiment surface structure schematic diagram of the present utility model, and Fig. 2 is the sectional view of Fig. 1, and Fig. 3 is the vertical view of Fig. 1, and Fig. 4 is the structural representation of second kind of embodiment of the utility model, and Fig. 5 is the vertical view of second kind of embodiment.The utility model is described in further detail below in conjunction with accompanying drawing.
Two door bolt safety locks are made up of lock body and two locking device of sending out.Lock body is made up of procapsid 1, back casing 2, by screw together, sliding latch through hole 3, pull bar through hole 4 and insurance lock bolt through hole 5 is arranged on lock body.Door bolt groove 6 and 7 is arranged, latch key chamber 8 and 9 on back casing 2.
Two locking devices are made up of sliding latch 10, spring 11, insurance lock bolt 12, spring 13, spanner door bolt key 14, spring 15, move about door bolt key 16 and spring 17.Sliding latch 10 is made up of lock bolt 18 and pull bar 19, and the upper end of pull bar 19 is connected with a side of lock bolt 18 lower surfaces, and is an overall structure.Keyway 20 is arranged on lock bolt 18, keyway 21 is arranged on pull bar 19.On the insurance lock bolt 12 keyway 22 and 23 are arranged.
Sliding latch 10 is arranged in the door bolt groove 6, and its upper/lower terminal passes sliding latch through hole 3 and the pull bar through hole 4 on the lock body respectively.Spring 11 is arranged on the bottom in the door bolt groove 6, and the lower end of spring 11 is replaced on the diapire of door bolt groove 6, and its upper end is replaced on lock bolt 18.Insurance lock bolt 12 is arranged in the door bolt groove 7, and the insurance lock bolt through hole 5 on the lock body is inserted in its upper end.The bottom is provided with spring 13 in door bolt groove 7, and the two ends of spring 13 are replaced respectively on the diapire of door bolt groove 7 and insurance lock bolt 12.Spanner door bolt key 14 and spring 15 are arranged in the latch key chamber 8, and the two ends of spring 15 are replaced respectively on the diapire of latch key chamber 8 and spanner door bolt key 14, and the front end of spanner door bolt key 14 contacts with insurance lock bolt 12.Move about door bolt key 16 and spring 17 is arranged in the latch key chamber 9, and an end of spring 17 is replaced on the convex 24 of door bolt key 16 that moves about, and its other end is replaced on the diapire of latch key chamber 9.The end of fastening key 16 with a bolt or latch that moves about is replaced on sliding latch 10, and the door bolt key through hole 25 that its other end passes on latch key chamber 9 diapires stretches into the keyway 22 that insures on the lock bolt 12.
Spanner door bolt key 14 has spanner 26.The door bolt key 16 that moves about has spanner 27.The spanner 26 and 27 spanner chute from procapsid 1 28 and 29 respectively stretches out outside the lock body.
Embodiment two and embodiment one are structurally basic identical, and its difference is:
1, sliding latch 10 and insurance lock bolt 12 are circular lock bolt, in the upper end of insurance lock bolt 12 locating slot 30 are arranged.Be fixed with lock bolt positioning key 31 on lock body, the front end of lock bolt positioning key 31 inserts in the locating slot 30, and locating slot 32 is arranged on sliding latch 10, is fixed with lock bolt positioning key 33 on lock body, and lock bolt positioning key 33 inserts in the stopper slot 32.
2, in latch key chamber 8, be provided with two spanner door bolt keys 14.Under normal circumstances, the front end of two spanner door bolt keys 14 is replaced respectively on the sliding latch 10 and on the insurance lock bolt 12.
3, only have a keyway 20 on the sliding latch 10.
Claims (3)
1, two door bolt safety locks, form by lock body and two locking device of sending out, lock body is made up of procapsid (1), back casing (2), procapsid (1) and back casing (2) are by screw together, sliding latch through hole (3), pull bar through hole (4) and insurance lock bolt through hole (5) are arranged on lock body, it is characterized in that:
A, on back casing (2), have door bolt groove (6), the door bolt groove (7), latch key chamber (8) and latch key chamber (9), spanner chute (28) and spanner chute (29) are arranged on procapsid (1);
B, two locking devices are made up of sliding latch (10), spring (11), insurance lock bolt (12), spring (13), spanner door bolt key (14), spring (15), move about door bolt key (16) and spring (17); Sliding latch (10) is made up of lock bolt (18) and pull bar (19), the upper end of pull bar (19) is connected with a side of the lower surface of lock bolt (18), and be an overall structure, keyway (20) is arranged on lock bolt (18), keyway (21) is arranged on pull bar (19), on insurance lock bolt (12), keyway (22) and (23) are arranged; Sliding latch (10) is arranged in the door bolt groove (6), on it, sliding latch through hole (3) and the pull bar through hole (4) on the lock body passed at following two ends respectively, spring (11) is arranged on the bottom in the door bolt groove (6), the lower end of spring (11) is replaced on the diapire of door bolt groove (6), its upper end is replaced on lock bolt (18), insurance lock bolt (12) is arranged in the door bolt groove (7), the insurance lock bolt through hole (5) on the lock body is inserted in its upper end, the bottom is provided with spring (13) in door bolt groove (7), the two ends of spring (13) are replaced respectively on the diapire of door bolt groove (7) and insurance lock bolt (12), spanner door bolt key (14) and spring (15) are arranged in the latch key chamber (8), the two ends of spring (15) are replaced respectively on the diapire of latch key chamber (8) and spanner door bolt key (14), and the front end of spanner door bolt key (14) contacts with insurance lock bolt (12); Move about door bolt key (16) and spring (17) is arranged in the latch key chamber (9), one end of spring (17) is replaced on the convex (24) of door bolt key (16) that moves about, its other end is replaced on the diapire of latch key chamber (9), the end of fastening key (16) with a bolt or latch that moves about is replaced on sliding latch (10), and the door bolt key through hole (25) that its other end passes on latch key chamber (9) diapire stretches into the keyway (22) that insures on the lock bolt (12); The spanner (27) of the spanner (26) of spanner door bolt key (14), the door bolt key (16) that moves about, stretch out outside the lock body spanner chute (28) and (29) from procapsid (1) respectively.
2, two door bolt safety lock of sending out according to claim 1, it is characterized in that described sliding latch (10) and insurance lock bolt (12) are cylindrical lock bolt, there is locating slot (30) upper end at insurance lock bolt (12), on lock body, be fixed with lock bolt positioning key (31), the front end of lock bolt positioning key (31) inserts in the locating slot (30), locating slot (32) is arranged on sliding latch (10), be fixed with lock bolt positioning key (33) on lock body, lock bolt positioning key (33) inserts in the locating slot (32).
3, two door bolt safety lock of sending out according to claim 2 is characterized in that being provided with a net spanner door bolt key (14) in door bolt keyway chamber (8), the front end of two spanner door bolt keys (14) is replaced respectively on sliding latch (10) and insurance lock bolt (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99223118 CN2373521Y (en) | 1999-03-19 | 1999-03-19 | Double-plunger-latch safety lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99223118 CN2373521Y (en) | 1999-03-19 | 1999-03-19 | Double-plunger-latch safety lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2373521Y true CN2373521Y (en) | 2000-04-12 |
Family
ID=34013389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99223118 Expired - Fee Related CN2373521Y (en) | 1999-03-19 | 1999-03-19 | Double-plunger-latch safety lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2373521Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209075A (en) * | 2018-08-07 | 2019-01-15 | 广东坚朗五金制品股份有限公司 | Automatic locking device and door and window |
-
1999
- 1999-03-19 CN CN 99223118 patent/CN2373521Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209075A (en) * | 2018-08-07 | 2019-01-15 | 广东坚朗五金制品股份有限公司 | Automatic locking device and door and window |
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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 |