CN103422734A

CN103422734A - Security door lock

Info

Publication number: CN103422734A
Application number: CN2013103558373A
Authority: CN
Inventors: 高欣璐
Original assignee: Ningbo Ideal Hardware Locates Co Ltd
Current assignee: Ningbo Ideal Hardware Locates Co Ltd
Priority date: 2013-08-13
Filing date: 2013-08-13
Publication date: 2013-12-04
Anticipated expiration: 2033-08-13
Also published as: CN103422734B

Abstract

The invention provides a security door lock, which belongs to the technical field of the door lock. According to the security door lock, the problems of poor axial locking capability and low security strength of the traditional security door lock can be solved. The security door lock comprises a fixed plate, a lock case and a spring bolt, wherein the fixed plate is fixedly connected with the front end of the lock case; the spring bolt is installed in the lock case and can axially move; two symmetric spring bolt hooks are installed in the spring bolt; the spring bolt hooks are provided with hook tongues; the rear end of the lock case is provided with a twisting assembly which penetrates through the lock case and rotates; the twisting assembly is connected with the spring bolt and the spring bolt hooks and controls the spring bolt to enter and leave the lock case; the hook tongues extend out of the lock case along with the spring bolt to pass through the spring bolt and extend out of two side walls; and the hook tongues are retracted back to the lock case along with the spring bolt so as to retract back to the spring bolt. The security door lock has the advantages of simple structure, high intensity and strong axial locking capability, and the security effect is greatly enhanced.

Description

A kind of safe-guard door lock

Technical field

The invention belongs to the door lock technical field, relate to a kind of safe-guard door lock.

Background technology

Door lock is that a kind of being mounted on door is used for door lock is lived to prevent that other people from opening this equipment easily, the kind of door lock is a lot, has mechanically, and electrical type is also arranged, according to different use occasions and user demand, its kind differs, but most door locks all should possess common characteristics, and that is exactly antitheft, so people's opposite house is locked on antitheft and makes an issue of, various safe-guard door locks emerge in an endless stream, and in numerous safe-guard door locks, the most common with mechanical safe-guard door lock.

Mechanical safe-guard door lock be take the mode of manually unblanking as main, its reasonable price, mechanical strength is higher, install and keep in repair all more convenient, therefore the market share amount is larger, this safe-guard door lock mainly consists of lock housing and the dead bolt that is arranged in lock housing, wrench device is installed on lock housing and is connected with dead bolt, be provided with keyhole on wrench device, people are by externally inserting key keyhole and rotating the turnover of the controlled lockmaking tongue of wrench device, when dead bolt stretches out lock housing, dead bolt enters in the dead bolt hole be arranged on door pocket and door lock is lived, when dead bolt recedes in dead bolt hole, door can freely be opened, dead bolt is important component in this class door lock as can be seen here, the quality of dead bolt and structure directly affect the quality of door lock, particularly affect the theftproof performance of safe-guard door lock, because this class safe-guard door lock is all to adopt the door latch type dead bolt, when dead bolt stretches out lock housing in addition and inserts in dead bolt hole, dead bolt can make safe-guard door lock move radially, can prevent that door from opening easily with body of wall, but this class door latch type safe-guard door lock is locked on can not opposite house being locked in axially, and the power that some stealers apply door lock when forcing open the door has been just axial force, if the theftproof performance of security door reduces greatly.

Therefore, people adopt various mode to strengthen dead bolt locking intensity in the axial direction, wherein just be included in dead bolt inside and set up a dead bolt hook, dead bolt hook and dead bolt are flexibly connected, while entering in dead bolt hole beyond dead bolt stretches out lock housing, the dead bolt hook stretches out the dead bolt outside simultaneously and is stuck in dead bolt hole, prevent dead bolt movement in the axial direction, yet this dead bolt of setting up a dead bolt hook has some disappearances on latching force and lock face, it can only guarantee that the dead bolt dogging lives one of them direction of above-below direction, and the other end of dead bolt hook is not set, its axial latching force is poor, and the axial locking ability of dead bolt integral body is born by an end entirely, in the course of time, it will inevitably lose latching force, therefore its locking intensity is poor, application life is lower.

Thus, people have invented a kind of safe-guard door lock with the double lock tongue hook, reach equilibrium of forces on upper and lower both direction by set up two dead bolt hooks in dead bolt inside, its locking intensity is stronger, increase application life, for example, notice of authorization number discloses a kind of lateral locks of safety door for the utility model patent of CN2821069Y, comprise panel, two dead bolt hooks, spring, short strike plate, sliding piece, long strike plate, lock box, two dead bolt hooks and spring fitting are between short strike plate and long strike plate, the two ends of spring are separately fixed on the spring fixed column of two dead bolt hooks, hinged by bearing pin between dead bolt hook and short strike plate and long strike plate, be fixed together the formation dead bolt by bearing pin between short strike plate and long strike plate, panel and lock box are fixed together, the slide socket at the two ends up and down of lock box is passed respectively at two of sliding piece, by the dead bolt hook, the head of the dead bolt of the buckle that short strike plate and long strike plate form is inserted in the dead bolt hole of panel, the afterbody of the dead bolt of buckle is placed in the groove on the lock box inwall, be provided with the slip pin on the dead bolt of buckle, the slip pin is inserted in oblique chute on sliding piece and in the straight runner on lock box.

Although this kind of door lock adopts the double lock tongue hook, make the axial latching force equilibrium of dead bolt under on the whole, but due to its Men Biansuo as security door, be arranged on upper corresponding with the security door master lock two angles up and down of door, world lock fork on driving lever during installation on sliding piece and security door master lock links together, during use, need to drive this kind of Men Biansuo by master lock, Men Biansuo stretches out, retract and all need to control by master lock, therefore there are following problems, at first all comparatively inconvenience in operation and use, Men Biansuo is arranged on the upper inferior horn of door, distant with master lock, its moment is longer, whole door-locking system structure is comparatively complicated, folding by master lock control gate limit lock is more painstaking, and in use, the problem of being prone to that is connected of master lock and Men Biansuo, cause normally folding of Men Biansuo, affect its theftproof performance, secondly, owing to supporting the use with master lock, this kind of door lock self lock body structure is also more complicated, and if the theftproof performance of master lock poor, stealer also can be removed the locking of Men Biansuo by master lock, its theftproof performance is poor, again, this kind of door lock can not independently be used, and must support the use with master lock, therefore increased user's use cost.

Summary of the invention

The objective of the invention is the problems referred to above that exist for prior art, proposed the safe-guard door lock that a kind of theftproof performance is good, simple in structure, easy to use, cost is low.

Purpose of the present invention can realize by following technical proposal: a kind of safe-guard door lock, comprise fixed head, lock housing and dead bolt, fixed head and lock housing front end are connected, dead bolt is arranged on lock housing inside and can moves axially, two symmetrically arranged dead bolt hooks are installed in dead bolt, be provided with the hook tongue on the dead bolt hook, the lock housing rear end is provided with the twisting assembly that runs through lock housing and rotation, twisting assembly and dead bolt, the dead bolt hook is connected, and the control dead bolt passes in and out in lock housing, the hook tongue stretches out outside lock housing and passes dead bolt and stretch out outside two side with dead bolt, the hook tongue is with being retracted in dead bolt in dead bolt retraction lock housing.

In above-mentioned a kind of safe-guard door lock, described twisting assembly comprises and runs through turning round hole, being arranged on and turning round on hole and two of being parallel to each other turn round circle and driver plate of lock housing, turn round the circle middle part and be provided with coaxial jack, two turn round circle is fixedly connected with, described driver plate rear end and two is turned round circle and is flexibly connected and turns round between circle two, and the driver plate front end is flexibly connected with dead bolt and dead bolt hook respectively.

In above-mentioned a kind of safe-guard door lock, a described end outward radial of turning round circle extends the connection bearing, above-mentioned alignment pin is installed in and connects on bearing, be positioned at the erection support that the periphery of turning round hole is provided with in lock housing, the described circle of turning round is arranged on and turns round and the connection bearing is resisted against on erection support in the hole in, and described to turn round hole coaxial with jack.

In above-mentioned a kind of safe-guard door lock, described driver plate has the connecting portion of an arc, and the two ends of connecting portion are connected with rear end with the front end of driver plate respectively.

In above-mentioned a kind of safe-guard door lock, described dead bolt hook comprises hook tongue main body and the above-mentioned hook tongue be bent to form by hook tongue main body one end, offer the bar v notch v on hook tongue main body, described dead bolt middle part axially offers bar hole, and the lock housing front end is provided with the dead bolt pin and the dead bolt pin that run through lock housing and passes successively bar v notch v and bar hole.

In above-mentioned a kind of safe-guard door lock, axially offer the capable slide opening one of bar on dead bolt front end side, above-mentioned dead bolt hook moves axially in the interior movement of the capable slide opening one of bar with dead bolt, and dead bolt rear end side axial offers the capable slide opening two of bar, above-mentioned driver plate with the rotation of turning round circle in the interior movement of the capable slide opening two of bar.

In above-mentioned a kind of safe-guard door lock, be provided with at the dead bolt middle part opening bearing pin that runs through dead bolt, the above-mentioned dead bolt hook other end is set on the opening bearing pin and take the opening bearing pin as the axle center rotation.

In above-mentioned a kind of safe-guard door lock, be provided with spring between driver plate and dead bolt hook, the front end of driver plate is provided with spring fastening, and spring one end is fixed on spring fastening, and the other end is connected with the opening bearing pin.

In above-mentioned a kind of safe-guard door lock, lock housing is comprised of enclosing cover one and enclosing cover two, enclosing cover one is provided with bandy pinch plate with enclosing cover two front ends, be provided with the fixing hole passed for pinch plate on described fixed head, pinch plate through fixing hole, lock housing is fixedly connected with fixed head and pinch plate and fixed head in same plane.

Compared with prior art, the present invention has following beneficial effect: at first, two symmetrical dead bolt hooks are installed in dead bolt simultaneously, are made the axial latching force equilibrium of dead bolt both sides, its locking performance is stronger, and anti-theft effect is better, secondly, component of the present invention are less, self structure is simple, be equipped with on lock housing and turn round circle, directly by outside, insert key and just can control stretching of dead bolt and opening and closure of dead bolt hook, can directly as primary door latch, use, without the door lock with other, be used in combination, overall structure is simple, its probability broken down reduces greatly, can not affect its normal use, application life is more of a specified duration, the lock housing easy disassembly, be convenient to daily maintenance and replacing, it uses also more for convenience, because it can be used alone, its price of safe-guard door lock of comparing existing double lock tongue hook is more economical, use cost is lower, applicable is wider.

The accompanying drawing explanation

Fig. 1 is the side schematic view of a kind of safe-guard door lock of the present invention.

Fig. 2 is the cross-sectional view of a kind of safe-guard door lock of the present invention.

Fig. 3 is the exploded perspective structural representation of a kind of safe-guard door lock of the present invention.

Fig. 4 is the plan view of dead bolt hook in a kind of safe-guard door lock of the present invention.

In figure, 10, fixed head; 11, storage tank; 12, fixing hole; 13, installing hole one; 20, lock housing; 21, enclosing cover one; 22, enclosing cover two; 23, turn round hole; 24, erection support; 25, dead bolt pin; 25a, dead bolt pin-and-hole; 26, anchor pin; 26a, grappling pin-and-hole; 27, screw; 28, pinch plate; 29, bayonet socket; 29a, fixture block; 30, dead bolt; 31, bar hole; 32, connecting pin; 32a, connection pin-and-hole; 33, opening bearing pin; 33a, cotter-pin hold; 34, the capable slide opening one of bar; 35, the capable slide opening two of bar; 40, dead bolt hook; 41, hook tongue main body; 42, hook tongue; 43, bar v notch v; 43a, the first breach; 43b, the second breach; 43c, the 3rd breach; 44, locating hole three; 50, driver plate; 51, locating hole one; 52, locating hole two; 53, spring fastening; 60, turn round circle; 61, jack; 62, alignment pin; 63, connect bearing; 64, dowel hole; 70, spring, 80, decoration panel 81, installing hole two.

The specific embodiment

Be below specific embodiments of the invention by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiment.

As shown in Figure 1, a kind of safe-guard door lock of the present invention, comprise decoration panel 80, fixed head 10, lock housing 20 and dead bolt 30, fixed head 10 is connected with lock housing 20 front ends, dead bolt 30 is arranged in lock housing 20 and with lock housing 20 and is flexibly connected, and dead bolt 30 moves axially in lock housing 20 and dead bolt 30 front ends can and stretch out beyond fixed head 10 through fixed head 10.

As shown in Figure 2, dead bolt 30 inside are equipped with symmetrically arranged dead bolt hook 40, the rear end of lock housing 20 is provided with the twisting assembly and the twisting assembly that are connected with lock housing 20 and connects dead bolt 30 and dead bolt hook 40 simultaneously, be provided with hook tongue 42 on dead bolt hook 40, twisting component synchronization control dead bolt 30 moves axially in lock housing 20 and dead bolt hook 40 opens and closure, hook tongue 42 stretches out lock housing 20 when outer when dead bolt 30, hook tongue 42 passes dead bolt 30 and stretches out outside two side, hook tongue 42 is when dead bolt 30 retraction lock housings 20 when interior, and hook tongue 42 is retracted in dead bolt 30.

In the interior axial both sides of dead bolt 30, two dead bolt hooks 40 are installed simultaneously, when dead bolt 30 puts in dead bolt hole, dead bolt hook 40 hooks the relative both direction of dead bolt hole simultaneously, reach Bidirectional locking, make the axial latching force equilibrium of dead bolt both sides, monodirectional locking more in the past, the locking performance of this theftproof lock is stronger, and anti-theft effect is better.

As shown in Figure 2, the twisting assembly comprise run through lock housing 20 turn round hole 23, be arranged on and turn round on hole 23 and two of being parallel to each other turn round circle 60 and driver plate 50, driver plate 50 front ends are connected with dead bolt hook 40 with dead bolt 30 respectively, driver plate 50 rear ends and two turn round circle 60 and are flexibly connected and turn round between circle 60 two, two turn round circle 60 symmetrical parallel settings, turn round circle 60 for cylindrical shape and turn round an end that encloses 60 and extend outward circular connection bearing 63, turn round circle 60 integral body and be the axial step shape, turning round circle 60 middle parts axially offers jack 61 and two to turn round the jack 61 of circle on 60 coaxial, connect on bearing 63 and offer three dowel holes 64, wherein two dowel holes 64 are adjacent and be positioned at a side that connects bearing 63, another dowel hole 64 is positioned at the opposite side that connects bearing 63, alignment pin 62 is arranged in dowel hole 64 and turns round circle 60 by two and is fixedly connected with, further, the rear end of driver plate 50 is provided with locating hole 1, the rear end of driver plate 50 is set on adjacent two alignment pin 62 one of them alignment pin 62 and two and turns round between circle 60 by locating hole 1.

Turn round that circle 60 is arranged on lock housing 20 and himself is rotatable, turn round circle 60 is static with respect to lock housing 20 on locus, but turning round circle 60 self can circumferentially rotate, and dead bolt 30 all moves axially on lock housing with dead bolt hook 40, turn round the motion state of circle 60 and dead bolt 30 and dead bolt hook 40, the direction of motion is all different, dead bolt 30 and dead bolt hook 40 can produce friction with lock housing 20 inwalls when mobile lock housing 20 is interior, and friction can hinder the movement of dead bolt 30 in lock housing, affect the result of use of this safe-guard door lock, and by turning round installation driver plate 50 between circle 20 and dead bolt 30, driver plate 50 with turn round circle 60, dead bolt 30 all is flexibly connected, making dead bolt 30 and dead bolt hook 40 remain moves axially, make the use of this safe-guard door lock more flexible.

As shown in Figure 3, turn round hole 23 and run through lock housing 20, be positioned at the periphery of turning round hole 23 in lock housing 20 and be provided with erection support 24, erection support 24 is symmetrically arranged two arc back-up blocks, turn round circle 60 through erection support 24 and be arranged on and turn round in hole 23, connect bearing 63 and be resisted against on erection support 24 and back-off shape, turn round hole 23 coaxial with jack 61.

Be provided with erection support 24 on the inner surface of lock housing 20 both ends of the surface, turn round circle 60 through erection support 24, erection support 24 is looped around turns round circle 60 peripheries, preventing from turning round circle 60 moves radially, make and turn round circle 60 and take all the time the center of circle and keep as axle center circumferentially rotating, reduced to turn round the gap between circle 60 and lock housing 20, make and turn round circle 20 and be difficult for by extraneous destructions, increase the intensity of safe-guard door lock, improved the theftproof performance of safe-guard door lock; Two connection bearings 63 all are resisted against on the erection support 24 of a side separately, what two erection supports 24 will be oppositely arranged two connects bearings 63 and is fixed on lock housing 20 inside, make and turn round circle and 20 can not move axially, prevent from turning round beyond outstanding lock housing 20 end faces of circle 60, keep turning round the globality of circle 60 and lock housing 20.

As shown in Figure 3, driver plate 50 is divided into front portion, what the connecting portion 50a of rear portion and medial arc and three were integral type is tabular, being shaped as of driver plate 50 is crooked tabular, locating hole 1 is positioned at driver plate 50 rear portions and is positioned at the inner arc place of arc connecting portion 50a, due to driver plate 50 with turn round circle 60 and be flexibly connected, and driver plate 50 will drive dead bolt 30 in the interior movement of lock housing 20 with the rotation of turning round circle 60, and the stroke of dead bolt 30 is longer, if driver plate 50 is linearity, when turning round circle 60 rotation, the longest stroke of driver plate 50 is the radius of turning round circle 60, therefore can't reach the due haul distance of dead bolt 30, and the connecting portion 50a of driver plate 50 is arc, make the shift motion of driver plate 50 while turning round circle 60 rotation increase the turnover that also can meet dead bolt 30.

As shown in Figure 2, offer the connection pin-and-hole 32a that runs through dead bolt 30 on the angle of dead bolt 30 rear end end faces, connect in pin-and-hole 32a and be installed with connecting pin 32, driver plate 50 front ends have locating hole 52, driver plate 50 front ends stretch in dead bolt 30, driver plate 50 is set on connecting pin 32 by locating hole 52, be provided with spring 70 between driver plate 50 and dead bolt hook 40, the front end of described driver plate 50 is provided with spring fastening 53, spring 70 1 ends are fixed on spring fastening 53, dead bolt 30 middle parts are provided with the opening bearing pin 33 that runs through dead bolt 30, the other end of hook tongue main body 41 offers locating hole 3 44, above-mentioned dead bolt hook 40 is set on opening bearing pin 33 by locating hole 3 44 and take opening bearing pin 33 as the axle center rotation, spring 70 other ends are connected with opening bearing pin 33.

Locating hole 1 by driver plate 50 and locating hole 52 by driver plate 50 and dead bolt 30 with turn round circle 60 and be flexibly connected, and by spring 70 spring fastening on connection for transmission plates 50 and the fixing opening bearing pin 33 of dead bolt hook 40 respectively, turn round circle 60 o'clock, driver plate 50 is controlled the opening and closing of moving axially of dead bolt 30 and dead bolt hook 40 simultaneously, it is simple in structure, use more conveniently, theftproof performance is stronger.

As shown in Figure 2 and Figure 3, dead bolt hook 40 comprises hook tongue main body 41 and the hook tongue 42 be bent to form by hook tongue main body 41 1 ends, hook tongue main body 41 tilts and offers the bar v notch v 43 extended to hook tongue 42 1 sides by hook tongue main body 41 middle parts, dead bolt 30 middle parts axially offer bar hole 31, and lock housing 20 front ends are provided with the dead bolt pin 25 and the dead bolt pin 25 that run through lock housing 20 and pass bar v notch v 43 and bar hole 3l simultaneously.

As shown in Figure 4, bar hole 43 is divided into the first breach 43a, the second breach 43b, the 3rd tri-of breach 43c part, the first breach 43a is positioned at the axial middle part of hook tongue main body 4l and extends to the side with hook tongue 42 relative directions, the locating hole 3 44 of the first breach 43a next-door neighbour dead bolt hook 40, the second breach 43b is the first breach 43a and being extended by side direction hook tongue 42 1 sides of hook tongue 42 relative directions immediately, angle between the second breach 43b and the first breach 43a is obtuse angle, the 3rd breach 43c is the second breach 43b immediately, the edge of the close hook tongue main body 41 of the 3rd breach 43c is also parallel with the edge of hook tongue main body 4l, angle between the 3rd breach 43c and the second breach 43b is obtuse angle.

Bar hole 43 is extended to the 3rd breach 43c at hook tongue main body 4l edge successively by the first breach 43a at hook tongue main body 41 middle parts, dead bolt pin 25 is fixed in the dead bolt pin-and-hole 25a of enclosing cover 1 and enclosing cover 2 22 through bar hole 3l and bar hole 43, when turning round circle 60 and rotate and drive driver plate 50 and move, under the drag effect of dead bolt pin 25, driver plate 50 drive hook tongue main body 4l move according to the shape of bar hole 43, and control opening and closing of dead bolt hook 40, when dead bolt 30 stretches out and enter in dead bolt hole, dead bolt hook 40 opens and stretches out the relative both sides that dead bolt 30 is outside and pin dead bolt hole simultaneously, make the latching force equilibrium of dead bolt 30 integral body, the integrated anti-theft effect of safe-guard door lock strengthens.

As shown in Figure 3, axially offer the capable slide opening 1 of bar on dead bolt 30 front end sides, the capable slide opening 1 of bar is extended to the middle part of dead bolt 30 by the front end of dead bolt 30, dead bolt hook 40 moves axially in the interior movement of the capable slide opening 1 of bar with dead bolt 30, dead bolt 30 rear end side axial offer the capable slide opening 2 35 of bar, and driver plate 50 is with turning round circle 60 rotation in the interior movement of the capable slide opening 2 35 of bar.

Offer the capable slide opening 1 of bar and the capable slide opening 2 35 of bar on the side of dead bolt, so can dwindle dead bolt, the volume of safe-guard door lock integral body even, make the safe-guard door lock compact overall structure, and guarantee dead bolt hook 40 with driver plate 50 in the situation that dead bolt 30 small volumes have sufficient mobile space and guarantee that dead bolt hook 40 and driver plate 50 can not rub with dead bolt 30 or lock housing 20, and the capable slide opening 1 of bar has limited the movement locus of dead bolt hook 40 with driver plate 50 with the capable slide opening 2 35 of bar, make dead bolt hook 40 and the driver plate 50 can be not up and down or the left and right play, guaranteed dead bolt 20, the normal movement of dead bolt hook 40 and the normal use of safe-guard door lock.

As scheme as shown in l and Fig. 3, lock housing 20 comprises enclosing cover 1 and enclosing cover 2 22, offer grappling pin-and-hole 26a on the rear end end face of enclosing cover one 2l and enclosing cover 2 22, in grappling pin-and-hole 26a, anchor pin 26 is installed, above-mentioned dead bolt 30, driver plate 50, turn round circle and 60 be installed between shell 1 and shell 2 22, one end of anchor pin 26 is provided with screw 27, anchor pin 26, is finally passed through screw 27 and is fixed with grappling pin-and-hole 26a on shell 2 22 and shell 1 is connected with on shell 2 22 through shell 1.

Enclosing cover 1 is connected with enclosing cover 2 22 with anchor pin 26 by screw 27, makes the safe-guard door lock integral disassembly, assembly convenient, be convenient to the maintenance of lock body internal fault and the replacing of interior each component of lock body.

As shown in Figure 3, enclosing cover 1 extends bandy pinch plate 28 with enclosing cover 2 22 front ends, be provided with corresponding fixing hole l2 on fixed head 10, fixing hole 12 arranged outside have storage tank 11, pinch plate 28 through bending after fixing hole l2, enter in storage tank 11 and pinch plate 28 with fixed head 10 in same plane, the arranged outside of fixed head 10 has decoration panel 80, offer installing hole 1 on fixed head 10, be provided with installing hole 2 81 on decoration panel 80, screw is fixedly mounted on decoration panel 80 on security door with fixed head l0 through installing hole 1 and installing hole 2 81.

Pinch plate 28 is fixedly connected with lock housing 20 through fixing hole 12 with fixed head 10, make fixed head 10 and lock housing 20 easy to assemble, pinch plate 28 through crooked after fixing hole l2 and with fixed head 10 in same plane, so, decoration panel 80 and the fixing laminating of fixed head l0, decoration panel 80 can not produce gap with fixed head l0 is middle, has improved the precision of safe-guard door lock, has strengthened the theftproof performance of safe-guard door lock.

As shown in Figure 3, on a side of enclosing cover 1, offer bayonet socket 29a, enclosing cover is correspondingly provided with fixture block 29 on 2 22 1 sides, and fixture block 29 snaps in bayonet socket 29a, prevents that enclosing cover 1 and enclosing cover 2 22 from axially dislocation occurring.

The present invention is four steps at mounting method, the first step is by two overlapping dead bolt 30 inside that are placed in of dead bolt hook 40, two hook tongues 42 are towards the outer placement of lock housing 20 and guarantee that hook tongue 42 can stretch out beyond the capable slide opening 1 of bar, successively through the cotter-pin hold 33a of dead bolt 30 and the locating hole 3 44 of two dead bolt hooks 40, two dead bolt hooks 40 and dead bolt 30 are flexibly connected opening bearing pin 33.

Second step, the rear end of driver plate 50 is set on one of them alignment pin 62 by locating hole one 5l, the two ends of all alignment pins 62 are arranged on respectively to two and turn round interior adjacent being oppositely arranged of connection bearing 63 that also guarantees to turn round circle 60 of corresponding dowel hole 64 on circle 60, the front end of driver plate 50 is placed in to dead bolt 30 inside through the capable slide opening 2 35 of bar, successively through the connection pin-and-hole 32a of dead bolt 30 and the locating hole 2 52 of driver plate 50 front ends, make the rear and front end of driver plate 50 enclose 60 flexible connections with dead bolt 30 with turning round respectively connecting pin 32.

The 3rd step, the dead bolt 30 that installation is connected, driver plate 50, turning round circle 60 is arranged in enclosing cover 1 (or enclosing cover 2 22), to turn round circle 60 through the erection support 24 of enclosing cover 1 (or enclosing cover 2 22) and be arranged on and turn round in hole 23, dead bolt pin 25 is arranged in the dead bolt pin-and-hole 25a of enclosing cover one 2l (or enclosing cover 2 22) through an end of bar hole 3l and bar v notch v 43 and dead bolt pin 25 successively, anchor pin 26 is arranged in grappling pin-and-hole 26a, then corresponding being connected with mounted enclosing cover 1 (or enclosing cover 2 22) by enclosing cover 2 22 (or enclosing cover 1), grappling pin-and-hole 26a by screw 27 through enclosing cover 2 22 is threaded with the rear end of anchor pin 26 and enclosing cover one 2l and enclosing cover 2 22 is fixed.

The 4th step, enclosing cover 1 and the pinch plate 28 of enclosing cover 2 22 front ends are passed to the fixing hole l2 of fixed head 10, then pinch plate 28 bendings made pinch plate 28 enter in storage tank ll and guarantee that pinch plate 28 and fixed head l0 are in same plane, finally by screw successively through installing hole 2 81 and installing hole 1, decoration panel 80 is arranged on the external surface of fixed head 10 and this safe-guard door lock is installed on security door.

The operating principle that is drawn a kind of safe-guard door lock of the present invention by above-mentioned embodiment is as follows, and this safe-guard door lock is arranged on a body, the corresponding dead bolt hole that holds dead bolt 30 that is equipped with on doorframe or door pocket.

When door is shut, the original state of this safe-guard door lock is non-lockup state, dead bolt hook 40 is positioned at dead bolt 30 inside, dead bolt 30 is positioned at lock housing 20, now key is put in and turn round circle 60 turn round in hole 61, the key that turns clockwise also drives turns round circle 60 rotations, driver plate 50 drives dead bolt 30 under circle 60 rotations and moves axially to lock housing 20 front ends turning round, dead bolt 30 is in moving process, spring shortens constantly accumulation elastic force and discharges elastic force, then to lock housing 20, same direction moves in dead bolt 30 inside to promote dead bolt hook 40, now due to the movement of dead bolt hook 40, the 3rd breach 43c on dead bolt hook 40, the second breach 43b passes through dead bolt pin 25 successively, dead bolt hook 40 constantly opens, when turning round circle 60 and turn to adjacent alignment pin 62 places and driver plate 50 and be resisted against on adjacent alignment pin 62, dead bolt 30 stretches out lock housing 20 outsides fully and enters in dead bolt hole, the first breach 43a moves to dead bolt pin 25 places and dead bolt hook 40 is maximum opening angle, now the hook tongue 42 of dead bolt hook 40 stretches out dead bolt 30 outsides and the relative both sides of dead bolt hole is pinned, the relative both sides of dead bolt hole are lockable, now this safe-guard door lock is in lockup state, the axial latching force equilibrium of dead bolt 30, the safe-guard door lock of more traditional single-bolt hook, its theftproof performance strengthens, and intensity is higher.

While opening this safe-guard door lock, dead bolt 30 is positioned at dead bolt hole, the relative both sides that dead bolt hook 40 pins dead bolt hole, now key is put in and turn round circle 60 turn round in the 6l of hole, circle 60 rotations are turned round in inhour screw key drive, driver plate 50 drives dead bolt 30 under circle 60 rotations and moves axially to lock housing 20 rear ends turning round, dead bolt 30 is in moving process, spring 70 is elongated and accumulates elastic force, when reaching maximum pull, spring 70 discharges elastic force, dead bolt hook 40 moves to the rear end of lock housing 20 with dead bolt 30 under the elastic force effect of spring 70, dead bolt hook 40 is in moving process, the first breach 43a on dead bolt hook 40, the second breach 43b, the 3rd breach 43c passes through dead bolt pin 25 successively, when turn round the circle 60 the rotation make driver plate 50 be resisted against away from the alignment pin 62 of driver plate 50 on the time, dead bolt pin 25 is in the 3rd breach 43c, now dead bolt 30 integral body under the drive of driver plate 50 enters lock housing 20 inside, dead bolt hook 40 is also minimum angles by maximum opening angle closure and is retracted into dead bolt 30 inside, now this safe-guard door lock is in non-lockup state, safe-guard door lock is opened.

Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.

Claims

1. a safe-guard door lock, comprise fixed head (10), lock housing (20) and dead bolt (30), fixed head (10) is connected with lock housing (20) front end, dead bolt (30) is arranged on lock housing (20) inside and can moves axially, it is characterized in that: two symmetrically arranged dead bolt hooks (40) are installed in dead bolt (30), be provided with hook tongue (42) on dead bolt hook (40), lock housing (20) rear end is provided with the twisting assembly that runs through lock housing (20) and rotate, twisting assembly and dead bolt (30), dead bolt hook (40) is connected, and control dead bolt (30) passes in and out in lock housing (20), hook tongue (42) stretches out outside lock housing (20) and passes dead bolt (30) and stretch out outside two side with dead bolt (30), hook tongue (42) is retracted in dead bolt (30) with in dead bolt (30) retraction lock housing (20).

2. a kind of safe-guard door lock according to claim 1, it is characterized in that: described twisting assembly comprises and runs through turning round hole (23), being arranged on and turning round upper and two of being parallel to each other in hole (23) and turn round circle (60) and driver plate (50) of lock housing (20), turn round circle (60) middle part and be provided with coaxial jack (61), two turn round circle (60) is fixedly connected with, described driver plate (50) rear end and two is turned round circle (60) and is flexibly connected and is positioned at two and turn round between circle (60), and driver plate (50) front end is flexibly connected with dead bolt (30) and dead bolt hook (40) respectively.

3. a kind of safe-guard door lock according to claim 2, it is characterized in that: a described end outward radial of turning round circle (60) extends connection bearing (63), above-mentioned alignment pin (62) is installed in and connects on bearing (63), be positioned at the erection support (24) that the periphery of turning round hole (23) is provided with in lock housing (20), the described circle (60) of turning round is arranged on and turns round in hole (23) and connect bearing (63) to be resisted against erection support (24) upper, and described to turn round hole (23) coaxial with jack (61).

4. a kind of safe-guard door lock according to claim 1, it is characterized in that: described driver plate (50) has the connecting portion (50a) of an arc, and the two ends of connecting portion (50a) are connected with rear end with the front end of driver plate (50) respectively.

5. according to claim 1 or 2 or 3 or 4 described a kind of safe-guard door locks, it is characterized in that: described dead bolt hook (40) comprises hook tongue main body (41) and the above-mentioned hook tongue (42) be bent to form by hook tongue main body (41) one ends, offer bar v notch v (43) on hook tongue main body (41), described dead bolt (30) middle part axially offers bar hole (31), and lock housing (20) front end is provided with the dead bolt pin (25) and the dead bolt pin (25) that run through lock housing (20) and passes successively bar v notch v (43) and bar hole (31).

6. a kind of safe-guard door lock according to claim 5, it is characterized in that: axially offer the capable slide opening one (34) of bar on dead bolt (30) front end side, above-mentioned dead bolt hook (40) is mobile with moving axially in the capable slide opening one (34) of bar of dead bolt (30), dead bolt (30) rear end side axial offers the capable slide opening two (35) of bar, and above-mentioned driver plate (50) is mobile in the capable slide opening two (35) of bar with the rotation of turning round circle (60).

7. a kind of safe-guard door lock according to claim 6, it is characterized in that: be provided with at dead bolt (30) middle part the opening bearing pin (33) that runs through dead bolt (30), above-mentioned dead bolt hook (40) other end is set in opening bearing pin (33) above and take opening bearing pin (33) as the axle center rotation.

8. a kind of safe-guard door lock according to claim 7, it is characterized in that: between driver plate (50) and dead bolt hook (40), be provided with spring (70), the front end of driver plate (50) is provided with spring fastening (53), it is upper that spring (70) one ends are fixed on spring fastening (53), and the other end is connected with opening bearing pin (33).

9. a kind of safe-guard door lock according to claim 1, it is characterized in that: described lock housing (20) is comprised of enclosing cover one (21) and enclosing cover two (22), enclosing cover one (21) is provided with bandy pinch plate (28) with enclosing cover two (22) front ends, on described fixed head (10), be provided with for the fixing hole (12) that passes of pinch plate (28), pinch plate (28) through fixing hole (12), lock housing (20) is fixedly connected with fixed head (10) and pinch plate (28) and fixed head (10) in same plane.