CN2439506Y

CN2439506Y - Guard lock with double key

Info

Publication number: CN2439506Y
Application number: CN 00212740
Authority: CN
Inventors: 田野
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-07-21
Filing date: 2000-07-21
Publication date: 2001-07-18
Anticipated expiration: 2010-07-21

Abstract

The utility model relates to a guard lock with double keys. An external cylinder of a lock core of the lock is radially provided with a row of external pin holes and stepped holes arranged at interval, a cylinder separated from the row of holes in 180 DEG is provided with a row of stepped holes and external pin holes arranged at interval, an internal cylinder is radially provided with a row of external pin holes and internal pin holes corresponding to the stepped holes, and external pins, internal pins, stepped pins and springs are arranged in each of the holes. When the first key is inserted, after the internal and the external pins are pushed and rotate the internal cylinder in 180 DEG, the second key is inserted and is rotated in 180 DEG, and the lock can be opened by a plectrum. The utility model has the advantages of simple structure, low cost, convenient use and good safety performance, and is suitable for various occasions.

Description

The double key safety lock

The utility model relates to a kind of safety lock, particularly utilize two the safety lock of key unlocking.

Before the utility model proposes, various being locked in when unblanking that people use all is to use a key, and this kind lock safety factor is low, and other joins a master key and is just pried open by the robber easily.It is antitheft that some important places also have applied cryptography lock to carry out, but coded lock manufacturing cost height, cumbersome during application can not be in common applications.

In order to solve the deficiency of present technology, the purpose of this utility model provides a kind of double key safety lock, can be effectively antitheft after this lock is used, and low cost of manufacture.

In order to realize the purpose of this utility model, its concrete technical application scheme is: this double key safety lock mainly by lock core, lock body, lock body cam ring driving member, dead bolt, protect tongue and form.Lock core is formed by exterior circular column, inner cylinder with the plectrum of cylinder tail end card hinge joint.Exterior circular column radially is provided with outer pin-and-hole and the shoulder hole of deploying at interval, also has shoulder hole and outer pin-and-hole at 180 degree of circumferentially being separated by, and order is equipped with export trade, spring in the outer pin-and-hole, in proper order ladder pin, spring is arranged in the shoulder hole, and the tail end in hole blocks by catch.Be provided with lockhole in the middle of the inner cylinder, radially have and outer pin-and-hole, the corresponding inner pinhole of shoulder hole, the sold inside the country of different length arranged in its hole.In the groove of the cam driving medium of the tail end plectrum insertion transmission mechanism of inner cylinder.When unblanking, first key inserts relevant position in the lockhole, the bossing of key heads on facing to export trade sold inside the country and makes sold inside the country, export trade outwards move to two pin end faces simultaneously and overlap with inside and outside cylinder contact surface, reverse key and make inner cylinder Rotate 180 degree, this moment, corresponding export trade entered part in the inner cylinder under the lower springs effect.Insert second key again, carry out equidirectional Rotate 180 degree, then open lock.It is antitheft that the circle that moves in the other direction when shutting both can make lock close.

The utility model only radially is provided with two exclusive pin-and-hole and shoulder holes on the lock core exterior circular column is separated by 180 circumference of spending, at inner cylinder one row's inner pinhole is set radially, spring, export trade, ladder pin and sold inside the country are housed respectively in each hole, under the cooperatively interacting of spring and each pin, by two difform keys inner cylinder being rotated once week can realize unblanking, shutting, reach double key and insure.So this kind lock construction is simple, safety performance is good, low cost of manufacture, and it is convenient to use, and the lock core of this lock is suitable for making various bright, built-in locks.

Do to describe in detail below in conjunction with drawings and Examples.

Fig. 1 is a sectional structure chart of the present utility model.

Fig. 2 is a contour structures view of the present utility model.

In Fig. 1, Fig. 2, this double key safety lock mainly by lock core, lock body 12, lock body cam ring driving member 16, dead bolt 14, protect tongue 17 and form.And lock core is formed by exterior circular column 1, inner cylinder 2 with the plectrum 14 of interior cylinder 2 tail end cards 13 hinge joints.Lock core tail end outer rim is fixed on the lock body 12, and cam driving medium is in lock body 12, and half of dead bolt 14 is in lock body 12 in the time of in off position, and half is in the chamber of protecting tongue 17.The exterior circular column 1 of lock core radially be provided with the outer pin-and-hole 8-shoulder hole 9 of an exclusive lockhole 8-shoulder hole 9-from left to right successively, radially be provided with the outer pin-and-hole 8 of an outer pin-and-hole 8-shoulder hole 9-of row's shoulder hole 9-with above-mentioned hole is separated by 180 degree.The centre of the inner cylinder 2 of lock core is provided with the lockhole 3 of flat band positioning table, radially have and outer pin-and-hole 8, shoulder hole 9 corresponding inner pinholes 11, the outer nose end ream of inner pinhole 11 has chamfering, easily enters inner pinhole 11 to utilize export trade 5, and the straight pin 4 of different length is housed in the inner pinhole 11.Order is equipped with export trade 5, spring 6 in the outer pin-and-hole 8, and blocks by arc block plate 7, and catch 7 plays support spring 6.Ladder pin 10, spring 6 are housed in the shoulder hole 9, also are to block by catch 7, and sold inside the country 4 back half-turns after breaking away from export trade 5 can be all the time scurried outside not in inner pinhole when the ladder-effect of shoulder hole 9, ladder pin 10 was inner cylinder 2 rotations.Plectrum 14 1 ends of the tail end of inner cylinder 2 and card 13 hinge joints, the other end inserts in the respective grooves of cam driving medium 15.State among the figure is the state that shuts of this lock, and during this state, the part of export trade 5 and is adjacent to sold inside the country 4 end face in inner pinhole 11.What present embodiment was said is door lock, and the inventive point lock core of this kind lock is by transforming the lock of plectrum 14 applicable to arbitrary structures.

Claims

1. double key safety lock, this safety lock is mainly by inner cylinder (2), exterior circular column (1), the plectrum (14) of lock core, lock body (12), cam driving medium (16), dead bolt (15), protecting tongue (17) forms, cam driving medium (16) is fixed in the lock body (12), and the tail end of lock core and lock body (12) are fixing; It is characterized in that outer pin-and-hole (8) and shoulder hole (9) that exterior circular column (1) radially has a row to deploy at interval, the shoulder hole (9) and the outer pin-and-hole (8) of being separated by and having a row to deploy at interval on the cylinders of 180 degree with this round, cylindrical export trade (5), spring (6) are arranged in the outer pin-and-hole (8), ladder pin (10), spring (6) are arranged in the shoulder hole (9), there is flat lockhole (3) centre of inner cylinder (2), one row's inner pinhole (11) is radially arranged, cylindrical sold inside the country (4) of different length are housed in the hole.

2. double key safety lock as claimed in claim 1, the part of export trade (5) and is adjacent to sold inside the country (4) end face in inner pinhole (11) when it is characterized in that inserting the key state.