CN104790779B - A kind of safety door latch - Google Patents

Abstract

The invention discloses a kind of safety door latch, push rod 1, horizontally disposed base 15, the main lock frame fixed plate 18 being vertically arranged, body frame 17, base 15 is provided with push rod 1, push rod 1 is connected with push rod base 2 by rivet, push rod base 2 is connected with being fixed on the push rod hinge 3 that push rod props up in bearing 4, push rod 1 is promoted to drive push rod hinge 3 pivoting, push rod hinge 3 drives trace 7 and pull bar driving member 5 to be moved rearwards by, push rod props up bearing 4 and is installed on fixing base plate 14, apparatus of the present invention are easy to operate, security performance is good, and use is the most all compared applicable.

Description

A kind of safety door latch

Technical field

The present invention relates to indoor security facility technology field, especially a kind of safety door latch.

Background technology

Door lock is the necessary article of each building fixture, is used to door lock to live to prevent other people from opening this Men get She Standby, for door lock unlatching some be mechanically, such as key etc., some is by electronically opening, The classification of door lock is a lot, different to the requirement of door lock in each occasion, and average family typically uses safe-guard door lock, Security is high, and price comparison is cheap, can use coded lock, Fingerprint Lock at some high-end occasions, privacy mechanism, Security is high, expensive.

Summary of the invention

The invention provides the safety door latch that a kind of security performance is good, it is therefore an objective to provide a kind of simple in construction and safety Function admirable, facilitate the good door lock that all groups use.

Technical scheme:

A kind of safety door latch, includes push rod 1, horizontally disposed base 15, the main lock frame that is vertically arranged are fixed Plate 18, body frame 17, base 15 is provided with push rod 1, and push rod 1 is connected with push rod base 2 by rivet, pushes away Bar base 2 is connected with being fixed on the push rod hinge 3 that push rod props up in bearing 4, promotes push rod 1 to drive push rod to cut with scissors Chain 3 pivoting, push rod hinge 3 drives trace 7 and pull bar driving member 5 to be moved rearwards by, and push rod props up bearing 4 are installed on fixing base plate 14, and fixing base plate 14 is positioned in base 15, is positioned at two push rods and props up bearing 4 Between trace 7 on trace prerotation vane 9, plastic sleeve 6 are installed, plastic sleeve 6 is installed on gearing On bar 7, trace prerotation vane 9 is arranged at the push rod of rear side and props up in bearing 4, trace prerotation vane 9 and plastics Connect between sleeve 6 and have trace coil tension spring 8, trace 7 end to be provided with afterbody insurance pull bar 10, interlock Bar 7 is moved rearwards by compressing trace coil tension spring 8, and the end of trace 7 connects has afterbody to insure pull bar 10, Afterbody insurance fixed mount 11 is installed on fixing base plate 14 end, and afterbody insurance fixed mount 11 to connect guarantor Danger non-return fastener 12 and hexagonal square shaft 13, rotate hexagonal square shaft 13 and drive insurance non-return fastener 12 pivoting simultaneously Clamping afterbody insurance pull bar 10, fixing base plate 14 is connected by body frame 17 with main lock frame fixed plate 18, main Tapered end idler arm 16 is positioned in body frame 17, and is connected with pull bar driving member 5, and lock core 19 is installed on master In lock frame fixed plate 18, lock core sliding piece 20 is connected with lock core 19, and rotating lock core 19 can dial by band movable lock core Moving plate 20 rotates, and lock core sliding piece 20 touches main tapered end idler arm 16 and is moved rearwards by, and linkage piece 21 is passed through Rivet is connected with main tapered end idler arm 16, body frame 17, linkage piece 21 other end and left and right driving member 22 phase Even, pull bar driving member 5 can drive main tapered end idler arm 16 to be moved rearwards by, and main tapered end idler arm 16 is by linkage Sheet 21 makes left and right driving member 22 be connected with left and right driving member 22 to contract, pipe 23, and pipe 23 is another One end is connected with little tapered end subframe dead bolt 26 and drives dead bolt to move, and little tapered end subframe dead bolt 26 is installed on little lock On head subframe 24, it is provided with little tapered end subframe between little tapered end subframe 24 and little tapered end subframe dead bolt 26 and stretches bullet Spring 25.

Advantages of the present invention:

Apparatus of the present invention are by push rod, main tapered end idler arm and associated components linkage action, it is achieved door lock is opened With sealed, easy to operate, security performance is good, and use is the most all compared applicable.

Accompanying drawing explanation

Fig. 1 is present configuration decomposing schematic representation.

Detailed description of the invention

See accompanying drawing, a kind of safety door latch, include push rod 1, horizontally disposed base 15, be vertically arranged Main lock frame fixed plate 18, body frame 17, base 15 is provided with push rod 1, and push rod 1 is by rivet and push rod base 2 are connected, and push rod base 2 is connected with being fixed on the push rod hinge 3 that push rod props up in bearing 4, promote push rod 1 Driving push rod hinge 3 pivoting, push rod hinge 3 drives trace 7 and pull bar driving member 5 to be moved rearwards by, Push rod props up bearing 4 and is installed on fixing base plate 14, and fixing base plate 14 is positioned in base 15, is positioned at two Push rod props up and is provided with trace prerotation vane 9, plastic sleeve 6, plastic sleeve on the trace 7 between bearing 4 6 are installed on trace 7, and trace prerotation vane 9 is arranged at the push rod of rear side and props up in bearing 4, and trace is led Having trace coil tension spring 8 to being connected between sheet 9 with plastic sleeve 6, trace 7 end is provided with afterbody insurance Pull bar 10, trace 7 is moved rearwards by compressing trace coil tension spring 8, unclamps the thrust applying push rod 1, Effect lower push-rod 1 at trace coil tension spring 8 can restore to the original state, and the end of trace 7 connects has afterbody to protect Danger pull bar 10 can be moved rearwards by together along with trace 7, and afterbody insurance fixed mount 11 is installed on fixing base plate Connect on 14 ends, and afterbody insurance fixed mount 11 and have insurance non-return fastener 12 and hexagonal square shaft 13, rotate six Angle square shaft 13 drives insurance non-return fastener 12 pivoting clamping afterbody insurance pull bar 10, fixing base plate 14 simultaneously Being connected by body frame 17 with main lock frame fixed plate 18, main tapered end idler arm 16 is positioned in body frame 17, and Being connected with pull bar driving member 5, lock core 19 is installed in main lock frame fixed plate 18, lock core sliding piece 20 with Lock core 19 is connected, and rotating lock core 19 can rotate by band movable lock core sliding piece 20, and lock core sliding piece 20 touches Main tapered end idler arm 16 is moved rearwards by, and linkage piece 21 is by rivet and main tapered end idler arm 16, body frame 17 phase Connecting, linkage piece 21 other end is connected with left and right driving member 22, and pull bar driving member 5 can drive main tapered end pull bar Part 16 is moved rearwards by, and main tapered end idler arm 16 makes left and right driving member 22 to contract, circle by linkage piece 21 Pipe 23 is connected with left and right driving member 22, and pipe 23 other end is connected with little tapered end subframe dead bolt 26 drive Dead bolt moves, and little tapered end subframe dead bolt 26 is installed on little tapered end subframe 24, little tapered end subframe 24 and little lock Being provided with little tapered end subframe coil tension spring 25 between head subframe dead bolt 26, remove outer active force, little tapered end subframe is locked Tongue 26 can at the effect Regression of little tapered end subframe coil tension spring 25 in situ.

Claims (1)

1. null1. a safety door latch，It is characterized in that，Include push rod、Horizontally disposed base、The main lock frame fixed plate being vertically arranged、Body frame，Base is provided with push rod，Push rod is connected with push rod base by rivet，Push rod base is connected with being fixed on the push rod hinge that push rod props up in bearing，Push rod is promoted to drive push rod hinge pivoting，Push rod hinge drives trace and pull bar driving member to be moved rearwards by，Push rod props up bearing and is installed on fixing base plate，Fixing base plate is positioned in base，Prop up at two push rods and trace prerotation vane is installed on the trace between bearing、Plastic sleeve，Plastic sleeve is installed on trace，Trace prerotation vane is arranged at the push rod of rear side and props up in bearing，It is connected between trace prerotation vane and plastic sleeve and has trace coil tension spring，Trace end is provided with afterbody insurance pull bar，Trace is moved rearwards by compressing trace coil tension spring，The end of trace connects has afterbody to insure pull bar，Afterbody insurance fixed mount is installed on fixing base plate end，And connection has insurance non-return fastener and hexagonal square shaft on afterbody insurance fixed mount，Rotate hexagonal square shaft and drive insurance non-return fastener pivoting clamping afterbody insurance pull bar simultaneously，Fixing base plate is connected by body frame with main lock frame fixed plate，Main tapered end idler arm is positioned in body frame，And be connected with pull bar driving member，Lock core is installed in main lock frame fixed plate，Lock core sliding piece is connected with lock core，Rotate lock core can rotate by band movable lock core sliding piece，Lock core sliding piece touches main tapered end idler arm，Main tapered end idler arm is moved rearwards by，Linkage piece is by rivet and main tapered end idler arm、Body frame is connected，The linkage piece other end is connected with left and right driving member，Pull bar driving member can drive main tapered end idler arm to be moved rearwards by，Main tapered end idler arm makes left and right driving member to contract by linkage piece，Pipe is connected with left and right driving member，The pipe other end is connected with little tapered end subframe dead bolt and drives dead bolt to move，Little tapered end subframe dead bolt is installed on little tapered end subframe，Little tapered end subframe coil tension spring it is provided with between little tapered end subframe and little tapered end subframe dead bolt.