CN2031821U - Automatic double-safety door lock - Google Patents

Abstract

This automatic double-safety door lock offers safety function without reversed rotation for one or two rounds after closing the door like the existing double-safety door locks. It also solves the issue that people do not accustomed to reversed rotation. This lock is composed of a big sliding tongue, the small sliding tongue and the active plate between them. The small sliding tongue does not extend forward, which releases the active plate from being pressed upward. The active plate moves down to prevent the big sliding tongues from moving in, and offers safety function. To open the lock, you have to lift the active plate, and then pull the big sliding tongue to make it moving in.

Description

Automatic double-safety door lock

The utility model belongs to the dairy industry category.

At present the catch-bolt sold of hardware store is various in style, insurance multiple functional, the tongue of lock develops into two tongues and three tongues by single tongue, increased whereby lock firmly, on reality is used, also produced safety effect preferably.But the present lock of all kinds when it will reach insurance function, all need insert key in the lock hole when the people leaves the room and closes the door, counter turn around or two circles are drawn safety tongue, and play safety effect.Use extremely inconvenience, and forget this program easily, even if present in addition most people only get used to the tight back of door band on the door lock.Therefore, both made the many again insurances of function in normal the use, often only play the effect of a simple door lock, and caused opportunity to the lawless person.

The purpose of this utility model is: do not need behind the door key is inserted the effect that counter-rotating in the keyhole just can reach insurance normal closing, having only outdoors with key and door could opened at this moment, thereby play the effect of voluntary insurance, it is very convenient to use.

The scheme that the utility model technology solves is: this lock has little slip tongue and big slip tongue, between the movable tongue of size, a portable plate is arranged, when normal door is being opened,, make the slip release of big slip tongue because little slip tongue is in and stretches to the place ahead with the activity strip upward.Two slip tongues all can move in lock.When door closes after death, closed page has only big slip tongue lock hole, just big slip tongue reaches out, and closed page does not have little slip tongue lock hole, and the position that little movable tongue is moved in being in forever is when moving the position in little movable tongue is in, make and removed the right upwards compressing of portable plate, make under the portable plate effect of spring within it to move down, stoped big slip tongue in move, thereby play safety effect.Other structures of lock with common door locks seemingly.

The utility model has the advantages that, use after this lock, do not need after door is closed key is inserted in the keyhole effect that counter-rotating just can reach insurance.Thereby have only with key this moment and door could be opened the voluntary insurance effect of playing.

Fig. 1 is a structural representation of the present utility model

Below in conjunction with figure the utility model is further described:

The rectangular hole that is stamped out, the below of right side rivet one small front apron (8) small front apron of its connecting rod of little slip tongue (1), it is slightly larger than the cross section of portable plate (2), and movable moving plate can horizontally slip in this hole.The right-hand end of portable plate (2) is stamped into a garden cast, and be enclosed within one and be fixed on the steady pin (9) of shell (13), can be being mid point in the steady pin, rotate, the bottom of steady pin has a spring to force the left end of portable plate to move down, Fig. 2 is a portable plate, the positive side bitmap of the connection of steady pin and spring (9), small front apron.Pressuring spring (10) is tabular, and an end is fixed in shell by screw, and an end contacts with portable plate below portable plate, just can lift on the portable plate when moving on it and move.Company's page or leaf (12) of one position and big wrench is arranged in the middle of it, contact, the structure that the key heart of lock has similar big wrench to connect page or leaf plays moving mutually function.To connect page or leaf be the dotted line position that Fig. 1 is put in the center rotation with Fig. 1 garden heart to big wrench when rotating big wrench or key, can will upwards lift to spur simultaneously in the big slip tongue and move with its pressuring spring that intersects vertically, the left end of portable plate has certain distance during the normal position, when big movable tongue is shifted to the right to the left end of portable plate, this moment, portable plate was lifted to the top of big movable tongue, can not blocked.Fig. 3 is big movable tongue connecting rod right side fixed head (15), pressuring spring (10), and big wrench connects page or leaf (12) side connection layout.Fig. 4 is the positive side position connection layout of little wrench (4), big movable tongue inner arm, platelet hand fixing spring (6).(5) lock to hinge, have only the lock hole of big slip tongue, the fixed head of (7) three connecting rods and spring has a square hole in the middle of size slip tongue connecting rod, be convenient to portable plate and pressuring spring and move (11) fixing hole (14) internal fixation plate therein.When door is in when opening, two slip tongues all stretch to the place ahead, are in the position of solid line among the figure, and upwards take portable plate the position of in figure solid line because the left side displacement of baffle plate (8) this moment.Two slip tongues can both slide smoothly to the right when closing the door, and Dang Menguan after death allows big movable tongue move the lock hole to the left because the closed page of lock has only, and does not have the lock hole of little slip tongue, makes little movable tongue be in the dotted line position that moves to right forever.Baffle plate (8) has just lost the upwards contention effect to portable plate, when big slip tongue (3) bounces to the left, portable plate is owing to be subjected to the effect left end of spring to move down into the position of dotted line, stoped the right side of big slip tongue to be moved, all can not make big slip to the right move in which kind of method that don't work outdoors this moment, thereby play the effect of voluntary insurance.When opening, key or big wrench drive it and connect and at first promote pressuring spring plate (10) when page or leaf is done among Fig. 1 rotation clockwise and move up and promote sliding panel and move up, removed sliding panel to interception to big slip tongue, big slip tongue just can slide to the right and be rotated further arm-tie this moment, thereby just the big movable tongue of energy pull-up is shifted to the right and unblanks.Can promote equally to move on pressuring spring plate (10) portable plate (3) during the wrench in rotary door in addition and unblank.The key of this automatic door lock is that little slip tongue is when door is closed, owing to the hole of not having it on the closed page is in the dotted line position that moves to right.Brief description should be followed the total function of common Lock with double safety guard by lock once, (4) be the little wrench in location, when its half-twist, can withstand big slip tongue, at this moment both made outdoors and can not open with key, it also can make big slip tongue be in the condensation position simultaneously, and (6) are the latch plates of 90 ° of activities of control location wrench.Do 360 ° of counter rotations outdoors with key after, also can stop the connecting rod of big movable tongue top in addition, can not open the door indoor this moment.The shell of this lock is to use popular iron sheet molded case at present, and good looking appearance is generous.

Claims (3)

1, the automatic Lock with double safety guard a kind of by big slip tongue (3), that little slip tongue (1), portable plate (2) pressuring spring (9), closed page (5) are formed;

Feature is, the right-hand end of portable plate (2) is a cast, and be enclosed within on the steady pin (9), the bottom of steady pin has a spring to force the left end of portable plate to move down, portable plate (2) horizontally slips in this hole by right side rivet one small front apron (8), a rectangular hole of its connecting rod of little slip tongue (1); Pressuring spring (10) contacts with the below of portable plate, and company's page or leaf (12) of the key heart of lock and big wrench contacts with pressuring spring.

2,, it is characterized in that pressuring spring (10) is for tabular according to the described automatic Lock with double safety guard of claim (1).

3, automatic Lock with double safety guard according to claim 1 is characterized in that closed page (5) has only the lock hole of big movable tongue, and does not have the lock hole of little slip tongue.

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