CN2740718Y - Structure of tongue bolt and lock catch box (board) - Google Patents

Abstract

The utility model discloses a structure of a lock tongue and a lock fastener box (board), while the lifting lock tongue of the anti-theft door lock is an oblique tongue; the part of lock tongue extending from the lock tongue panel is a structure combined of a barrel (part of the barrel can be square as well as circular) and a bevel, and the bevel is positioned at the end of the lock tongue. The lock fastener box (board) is designed with a special gap which is used for ensuring that when the door is closed, the lock tongue can retract back into the lock tongue panel by impacting the lock fastener box (board). When the door is closed, the lock tongue can extend and enter the lock fastener box (board) to hook the lock fastener box (board) in the action of the spring structure, and most of the lock tongue barrel structure is required to enter the lock fastener box (board), so that the utility model excludes the possibility of opening the door through inserting a sheet objects from the door gap to press the lock tongue bevel, and as a result the anti-theft ability of the anti-theft door lock is improved to the near level of an oblique tongue (namely a double-tongue door lock) installed with a dead tongue.

Description

Novel dead bolt, keeper (plate) structure

Affiliated technical field

The utility model relates to door lock, mainly is that dead bolt is the door lock of oblique tongue.

Background technology

The oblique tongue of present known door lock mostly is the outstanding ramp structure that stretches out outside the latch bolt panel.When door was closed, tiltedly tongue stretched out and enters keeper (plate), hooks keeper (plate) and plays the locking effect.Because tiltedly can withdraw when being under pressure in the inclined-plane of tongue end, therefore can make in its latch bolt panel of withdrawing and reach the purpose of unblanking by toward crack between a door and its frame in, inserting inclined-plane that laminar object pushes oblique tongue.And people for the theftproof the subject of knowledge and the object of knowledge that improves oblique flapper lock increase can be by the structure and the slow-witted tongue structure of the oblique tongue of key lock, it all needs to use key when staying tongue usually starting the oblique tongue function of locking and start, it is not too convenient to use.And new structure also needs to increase parts, the shortening (such as being no less than 70000 times the application life that requires oblique tongue in the QB/T 2475-2000 standard, only require to be no less than 30000 application life of slow-witted tongue) that this just causes the complexity and the cost increase of manufacture craft and locks application life.

Summary of the invention

In order to overcome existing dead bolt is that the door lock anti-theft capability of oblique tongue is poor, complex manufacturing technology degree and cost increase, lock the shortening in application life and the shortcoming of using inconvenience behind the structure of increase locking dead bolt and the slow-witted tongue structure, the utility model provides a kind of novel dead bolt, keeper (plate) structure, its anti-theft capability is close with the oblique flapper lock that adds slow-witted tongue (promptly two flapper lock), but only existing skew bolt lock structure need be made trickle adjustment, need not to increase new structure and part.

The technical scheme in the invention for solving the technical problem is: the part that dead bolt stretches out latch bolt panel adopts cylinder, and (cylinder partly can be square column, also can be cylinder) and the inclined-plane structure combining, the inclined-plane is positioned at the end of dead bolt, certainly bump function for what keep lock, keeper (plate) is gone up design a special breach, guarantee that dead bolt can stretch out to enter and hook keeper (plate) in the keeper (plate) by in collision keeper (plate) the withdrawal latch bolt panel under the effect of spring structure after door is closed when door is closed.When being in closed condition, door require the major part of dead bolt column structure to enter in the keeper (plate).When door is in closure state, got rid of from the laminar object of crack between a door and its frame insertion and opened the possibility of door by pushing the dead bolt inclined-plane, promoted the theftproof performance of lock.

The beneficial effects of the utility model are, under the situation of structure that does not need to increase other and part, only the existing structure of oblique flapper lock are made the theftproof performance that very little adjustment just can promote lock significantly.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

Fig. 1 is a schematic sectional view of the present utility model.

Fig. 2 is the phantom drawing of an embodiment of the utility model.

1. keepers (plate) among the figure, 2. dead bolt, 3. shell, 4. spring structure, 5. the distance between outside keeper (plate) and the latch bolt panel, 6. the distance between the latch bolt panel outside and keeper (plate) inboard, the 7. distance between dead bolt cylinder, inclined-plane intersection and latch bolt panel, 8. distance between gap edge and latch bolt panel, 9. distance between dead bolt end and latch bolt panel, 10. breach (position), 11. dead bolt inclined-planes, 12. latch bolt panels.

In Fig. 1, (7) length must partly stretch in the keeper (plate) (1) with the cylinder of guaranteeing dead bolt greater than (6), (7) length less than (8) with first rum point that guarantees dead bolt (2) and breach on dead bolt inclined-plane (11), (9) greater than (8) to guarantee that dead bolt (2) stretches into keeper (plate) (1) back dead bolt (2) and can hook keeper (plate) (1) under the effect of spring structure (4).

Dead bolt among the embodiment shown in Figure 2 (2) is square column and inclined-plane structure combining.

Claims (1)

1. A kind of novel dead bolt, keeper (plate) structure are applicable to that all dead bolts are the door lock of oblique tongue.It is characterized in that: the part that dead bolt stretches out latch bolt panel is cylinder (cylinder partly can be square column, also can be cylinder) and inclined-plane structure combining, and the inclined-plane is positioned at the end of dead bolt.Keeper (plate) is gone up design a special breach, guarantees that dead bolt can withdraw in the latch bolt panel by colliding keeper (plate) when door is closed.Close the back dead bolt at door and stretch out to enter under can effect and hook keeper (plate) in the keeper (plate), and require the major part of dead bolt column structure to enter in the keeper (plate) at spring structure.

Images