CN2320740Y - Double-bolt safety door lock - Google Patents

Abstract

The utility model relates to a double-bolt safety door lock, comprising a lock body, a lock head, lock bolts, a handle, a safety knob and a lock catch box. A spacing seat is arranged on the lock body, a stepped spacing bolt is arranged on the spacing seat on which a through hole is also arranged, a spacing steel ball is arranged in the through hole, and a hole in which the spacing steel ball can be fallen is arranged on the stepped spacing bolt. The utility model can automatically extend the lock bolts and automatically control the safety, having the advantages of unique structure, strong anti-theft function, simple operation and flexible and convenient use; the double-bolt safety door lock can realize the anti-inserting safety, the automatic non-returning safety, the outer to inner safety and the inner to outer safety so as to have anti-inserting function, anti-prizing function, anti-theft function, anti-collision function, etc. The utility model can have active action in the anti-theft public security.

Description

A kind of pair of tonguing level insurance lock

The utility model relates to a kind of door lock, particularly a kind of door lock that can advance level and voluntary insurance automatically of twin-lock head.

At present, in general civilian door lock field, the door lock of single dead bolt is not often undertaken the function of anti-collision, and dead bolt is shorter, and the robber is easy to sledge and locks door, and its theftproof performance is relatively poor.The door lock that a kind of elongated spring bolt is also arranged, can prevent effectively that the robber from stealing the people, its anti-plug, tamper-resistant function are comparatively remarkable, but this door lock needs artificial manual operation during the one-level dead bolt after release, insurance after dead bolt discharges also needs manual operation, and is very inconvenient during use.

The purpose of this utility model is to overcome defective of the prior art, a kind of double lock tongue is provided and can advances level and insurance lock automatically at its double lock tongue of back of locking a door.

The technical solution of the utility model is as described below: comprising lock body, with joining universal tapered end of lock body or spherical tapered end, be placed in the dead bolt on the lock body, be placed in handle and insurance knob on the lock body, and in the door lock of keeper, dead bolt one end at lock body is equipped with a limit base, this limit base is built-in with and holds grade spacing tongue that advances that stretches out outside the lock body one by one, also be equipped with a through hole on the limit base, be equipped with a spacing steel ball that can drag body to deduct mutually with dead bolt in this through hole, advance be equipped with on grade spacing tongue one when in its indentation lock body spacing steel ball can fall into wherein hole.

It is an oblique angle with the position that spacing steel ball deducts mutually on one's body that dead bolt drags.

Dead bolt drags after one's death that portion is provided with a chevron-notch, can withstand handle pull the retaining recess that pin restriction dead bolt retreats after dead bolt advances level thereby be provided with one in the middle of this chevron-notch.

The utility model is provided with into grade spacing tongue, and it not only can advance double lock tongue level (lengthening one-level) automatically, can also control voluntary insurance (retaining), also can play windproof dead bolt simultaneously.Its structure uniqueness, anti-theft feature is strong, and is simple to operate, easy to use flexible.It can realize four kinds of insurances promptly: anti-plug insurance, retaining insurance automatically, outer internally insurance, interior external insurance, it is 10 millimeters that double lock tongue stretches out first order length, can extend the second level automatically again after locking a door, length also is 10 millimeters, therefore have the anti-theft feature of anti-plug, pick-proof, antitheft, anti-collision, can in antitheft public security, play a positive role.

The utility model will be further described below to pass through accompanying drawing and embodiment.

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model vertical view.

With reference to accompanying drawing, in that (present embodiment adopts spherical tapered end by universal tapered end or spherical tapered end 14, the tapered end of this spherical structure is the tapered end that door lock is opened, be again the decoration of handle), in the rotating mechanism of four insurance locks that constituted of lock body 1, double lock tongue 2, keeper 13, handle 9 and insurance knob 11, advance grade spacing tongue 4 and spacing steel ball 5 and all put on limit base 6, this limit base 6 is connected with an end of lock body 1.Limit base 6 is provided with a through hole 5.1, spacing steel ball 5 just be placed in this through hole 5.1 in.It is an oblique angle 3.1 that dead bolt drags the position of deducting mutually with steel ball 5 on the body 3.Advance to be equipped with a hole 4.1 on grade spacing tongue 4, spacing steel ball 5 just can fall into wherein in the time of in advancing grade spacing tongue 4 indentation lock bodies 1.Dead bolt drags body 3 rear portions that one chevron-notch 3.2 is set, and retaining recesses 3.21 are set in the middle of this chevron-notch 3.2, and the effect of this retaining recess 3.21 is that dead bolt 2 advances and withstands handle after the level and pull pin 8, thereby the function of insurance is played in retreating of restriction dead bolt 2.

The utility model advances grade spacing tongue 4 contact keepers 13 when door is closed (when locking a door), double lock tongue 2 also contacts keeper 13 simultaneously.After door was closed, dead bolt 2 was just locked in the bonnet lock hole of keeper 13, advanced grade spacing tongue 4 and was just pressed off by keeper 13, and at this moment spacing steel ball 5 leaves 3.1 places, oblique angle that dead bolt drags body 3, and slipped in the hole 4.1 on the spacing tongue 4, lost spacing effect.At this moment, twin-lock head 2 is pushed ahead one-level again with double lock tongue 2 under the promotion of dead bolt spring 7, and one-level promptly extends.Simultaneously, handle is pulled pin 8 and is dragged at dead bolt under the effect of body 3 chevron-notch 3.2, handle is pulled pin 8 be pushed into middle retaining recess 3.21 places that dead bolt drags body 3 chevron-notch 3.2, double lock tongue 2 is withstood by retaining recess 3.21, can not move back certainly, door just is insured and pins, thereby reaches the function of voluntary insurance.

Otherwise, when opening the door (tapered end 14 is opened similar with handle 9 open theories, is example here with the handle), rotation handle 9, handle is pulled pin 8 and is dragged in body 3 chevron-notch 3.2 at dead bolt and rotatablely move, and drags body 3 to draw in lock body 1 dead bolt, double lock tongue 2 is drawn in lock body 1, and door is just opened.Simultaneously, it shoots out lock body 1 under the promotion of spring 10 to advance grade spacing tongue 4, and spacing steel ball 5 restores, and drags the oblique angle 3.1 of body 3 to deduct mutually with dead bolt, again double lock tongue 2 is limited in the extended position of the first order, and door is unlocked.

Claims (3)

1, a kind of pair of tonguing level insurance lock, comprise lock body, with joining universal tapered end of lock body or spherical tapered end, be placed in the dead bolt on the lock body, be placed in handle and insurance knob on the lock body, and keeper, it is characterized in that: dead bolt one end at lock body is equipped with a limit base, this limit base is built-in with and holds grade spacing tongue that advances that stretches out outside the lock body one by one, also be equipped with a through hole on the limit base, be equipped with a spacing steel ball that can drag body to deduct mutually with dead bolt in this through hole, advance be equipped with on grade spacing tongue one when in its indentation lock body spacing steel ball can fall into wherein hole.

2, according to claim 1 pair of tonguing level insurance lock is characterized in that: it is an oblique angle with the position that spacing steel ball deducts mutually on one's body that dead bolt drags.

3, according to claim 1 pair of tonguing level insurance lock is characterized in that: dead bolt drags after one's death that portion is provided with a chevron-notch, can withstand handle pull the retaining recess that pin restriction dead bolt retreats after dead bolt advances level thereby be provided with one in the middle of this chevron-notch.

Images