CN2178764Y

CN2178764Y - Lock hold of safety door

Info

Publication number: CN2178764Y
Application number: CN 93239608
Authority: CN
Inventors: 夏治安
Original assignee: CHENGDU CITY SAFETY EQUIPMENT FACTORY
Current assignee: CHENGDU CITY SAFETY EQUIPMENT FACTORY
Priority date: 1993-11-24
Filing date: 1993-11-24
Publication date: 1994-10-05
Anticipated expiration: 2003-11-24

Abstract

The utility model discloses a lock hole of a safety door. The utility model is characterized in that the back surface of the safety door is provided with a lining plate, and an eccentric staircase-shaped hole is composed of a lock core hole of the lining plate and the hole of a protective lid for the lock core on the safety door surface. The iron sheet of the safety door surface abuts on the protective lid for the lock core after the protective lid for the lock core is sheathed, the displacement of the protective lid for the lock core is prevented, and the drilling-proof and the anti-picking actions are normally exerted. The utility model is extensively used for the various safety closets, theftproof doors, etc., which are provided with protective lids for lock cores.

Description

Lock hold of safety door

The utility model belongs to door and the annex security door lockhole relevant with lock.

Chinese patent 92214569.5 discloses a kind of lock core protective cover; can be widely used in the especially lock core protection of metal security door of various doors; stamping out recess in the relevant position of the lock core hole of security door, safe door can install; the lock core protective cover places in the recess; be screwed on the shop front; the various security doors that the patentee produced are owing to this technology of employing, and none routine lock core is by the record of unauthorised broken.Quality requirement for strictness, after technical supervision department takes extraordinary means to carry out destructive testing, may there be following hidden danger in the further deduction of inventor: form the slope at the recess edge owing to adopt Sheet Metal Forming Technology, by force on the lock core protective cover towards below when fiercely knocking, the lock core protective cover loses and relies on displacement downwards, so that screw is ruptured by the shearing force of metal door, the lock core protective cover comes off to screw in power transmission.Also formed bigger gap between recess edge and the lock core protective cover, be easy to be prized by the insertion of things such as drill rod.Therefore be necessary the lockhole of security door is improved.

The purpose of this utility model is, discloses a kind of security door lockhole, can prevent the displacement of lock core protective cover, makes it normally to bring into play effects such as anti-drilling pick-proof.

Technical solution of the present utility model is: a kind of security door lockhole is characterized in that the eccentric shoulder hole that described security door lockhole is made up of lock core hole, lock core protective cover hole; Lock core hole is welded on the liner plate at a back side; The screw hole of lock core protective cover is installed on the liner plate in addition; Open on the shop front in lock core protective cover hole.

The utility model is owing to taked shoulder hole, lock core protective cover to pack in the lock core protective cover hole, and the two size adapts.The edge in hole is close to encirclement and is covered the limit, not only is difficult to be pried open, and knocks evidence through brute force, and the shop front around the hole has been born strength, and lock core protective cover impossible displacement installs liner plate in addition additional shop front intensity is improved.The utility model simple in structure and the protection effect particularly remarkable.

Below in conjunction with accompanying drawing embodiment of the present utility model is further specified:

Fig. 1 prior art lock core hole and lock core protective cover installation drawing

Fig. 2 security door lockhole partial sectional view

Fig. 3 security door lockhole front view

Shown in Figure 1, it is prior art, the recess (14) that on the iron sheet shop front, has lock core hole (5A) and be stamped to form, lock (13) is gone up dress door built-in lock (9), in lock core (10) the cover hand-hole, lock core end face (11) is outdoors, suit lock core protective cover (7), it is fixed on the iron sheet shop front of recess with screw (12), is also shown in lock core protective cover inner cap (8).When striking the lock core protective cover suddenly by force, it slides along the slope of recess (14) and moves down, and when serious, screw (12) will be subjected to the shearing of the shop front (2) and rupture.The slope of recess place also may be pried open locking closure by drill rod sled etc. in addition.

Shown in Figure 2 is embodiment of the present utility model, on the iron sheet shop front (2), leave the diameter D lock core protective cover hole (4) suitable with lock core protective cover diameter D, welded liner plate (3) in the shop front (2) back, have lock core hole (5B) on the liner plate, two hole off-centre form stair-stepping security door lockhole.Door built-in lock model difference illustrated in figures 1 and 2, the utility model is not done requirement to this, and the lock core size gets final product with the lock core protective cover is corresponding.

Shown in Figure 3 is just to meet personally being seen security door lockhole at embodiment cabinet door, omits lock core protective cover, handle, coded lock etc.As seen the liner plate shown in the dotted line (3) also has three screw holes (6) to be used to adorn the lock core protective cover except lock core hole on the liner plate.Lock core protective cover hole (4) and lock core hole (5B) be isocenter not.

Embodiment of the present utility model shows, be fixed on the lock core protective cover in the corresponding hole with screw after because iron sheet has tightly surrounded around the lock core protective cover.Made it good support, guaranteed that goal of the invention realizes smoothly.

The utility model almost can be used for all various metal security doors of being furnished with the lock core protective cover, even wooden door.Further strengthen barrier propterty.

Claims

1, a kind of security door lockhole is characterized in that the eccentric shoulder hole that described security door lockhole is made up of lock core hole (5B) and lock core protective cover hole (4).

2, security door lockhole according to claim 1 is characterized in that described lock core hole (5B) perforate is on liner plate (3).

3, as claim 1 and 2 described security door lockholes, it is characterized in that described liner plate (3) is welded on the back side of the shop front (2), the screw hole (6) that the lock core protective cover is installed is arranged on the liner plate.

4, security door lockhole as claimed in claim 1 is characterized in that described lock core protective cover hole (4) perforate is on the shop front (2).