CN103422734B - A kind of safe-guard door lock - Google Patents

Abstract

The invention provides a kind of safe-guard door lock, belong to door lock technical field; It solve existing safe-guard door lock axial lock capability poor, the technical problem that antitheft intensity is low; 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, dead bolt hook is provided with hook tongue, lock housing rear end is provided with runs through lock housing and the twisting assembly rotated, twisting assembly is connected with dead bolt, dead bolt hook, and control dead bolt and pass in and out in lock housing, hook tongue stretches out outside lock housing with dead bolt and passes dead bolt and stretch out outside two side, and hook tongue is with being retracted in dead bolt in dead bolt retraction lock housing; This theft-proof door lock structure is simple, and intensity is higher, and axial lock capability is strong, and anti-theft effect strengthens greatly.

Description

A kind of safe-guard door lock

Technical field

The invention belongs to 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 to live with the equipment preventing other people from opening this easily, the kind of door lock is a lot, have mechanical, also has electrical type, according to different use occasion and user demand, its kind differs, but the door lock of the overwhelming majority all should possess a common feature, and that is exactly antitheft, people's opposite house like this be locked in antitheft on make an issue of, various safe-guard door lock emerges in an endless stream, and in numerous safe-guard door lock, the most common with mechanical safe-guard door lock.

Mechanical safe-guard door lock is in mode of manually unblanking, its reasonable price, mechanical strength is higher, install and keep in repair all more convenient, therefore market share amount is larger, this safe-guard door lock is mainly made up of lock housing and the dead bolt be arranged in lock housing, lock housing is provided with wrench device and is connected with dead bolt, wrench device is provided with keyhole, people are by inserting keyhole in outside by key and rotating the turnover of the controlled lockmaking tongue of wrench device, when dead bolt stretches out lock housing, door lock is lived in dead bolt enters and is arranged on door pocket dead bolt hole, when dead bolt recedes in dead bolt hole, door can freely be opened, dead bolt is component important in this kind of 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 kind of safe-guard door lock is all adopt door latch type dead bolt, when dead bolt to stretch out beyond lock housing and to insert in dead bolt hole, dead bolt can make safe-guard door lock move radially, can prevent door and body of wall from opening easily, but this kind of door latch type safe-guard door lock can not be locked in and axially lock by opposite house, and some stealers have been just axial forces to the power applied door lock when forcing open the door, if the theftproof performance of security door reduces greatly.

Therefore, people adopt various different 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 is flexibly connected with dead bolt, when dead bolt stretch out enter in dead bolt hole beyond lock housing time, dead bolt hook stretches out dead bolt outside simultaneously and is stuck in dead bolt hole, prevent dead bolt movement in the axial direction, but this dead bolt setting up a dead bolt hook has some to lack on latching force and lock face, it can only ensure that dead bolt hook blocks 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 lock capability of dead bolt entirety is born by one 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 double lock tongue hook, equilibrium of forces in upper and lower both direction is reached by setting up two dead bolt hooks in dead bolt inside, its locking intensity is stronger, application life increases, such as, Authorization Notice No. is that the utility model patent of CN2821069Y discloses a kind of lateral locks of safety door, 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, pass through between dead bolt hook with short strike plate and long strike plate together with hinge, formation dead bolt is fixed together by bearing pin between short strike plate and long strike plate, panel and lock box are fixed together, two of sliding piece is each passed through the slide socket at the two ends up and down of lock box, by dead bolt hook, the head of the dead bolt of the buckle of short strike plate and long strike plate composition is inserted in the dead bolt hole of panel, the afterbody of the dead bolt of buckle is placed in the groove on lock box inwall, the dead bolt of buckle is provided with slip pin, slip pin is inserted in the straight runner in the oblique chute on sliding piece and on lock box.

Although this kind of door lock adopts double lock tongue hook, axial latching force under making dead bolt is on the whole balanced, but because it is as the Men Biansuo of security door, be arranged on two angles up and down corresponding with security door master lock on door, world lock fork in 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 be controlled by master lock, therefore there are following problems, 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, more painstaking by the folding of master lock control gate limit lock, and in use, the connection of master lock and Men Biansuo easily goes wrong, cause Men Biansuo can not normally folding, 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 remove the locking of Men Biansuo by master lock, its theftproof performance is poor, again, this kind of door lock can not independently use, and must support the use with master lock, because this increasing the use cost of user.

Summary of the invention

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

Object of the present invention realizes 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, dead bolt hook is provided with hook tongue, lock housing rear end is provided with runs through lock housing and the twisting assembly rotated, twisting assembly and dead bolt, dead bolt hook is connected, and control dead bolt and pass in and out in lock housing, hook tongue stretches out outside lock housing with dead bolt and passes dead bolt and stretch out outside two side, hook tongue is retracted in dead bolt with in dead bolt retraction lock housing.

In above-mentioned a kind of safe-guard door lock, described twisting assembly comprise run through lock housing turn round hole, be arranged on turn round on hole and be parallel to each other two turn round circle and driver plate, turn round 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 to enclose and is flexibly connected and turns round between circle two, and 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, the described one end outward radial turning round circle extends connection bearing, above-mentioned alignment pin is installed in and connects on bearing, the erection support that the periphery of turning round hole is provided with is positioned in lock housing, described circle of turning round is arranged on to turn round in hole and connect bearing and is resisted against on erection support, described in 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, the above-mentioned hook tongue that described dead bolt hook comprises hook tongue main body and is bent to form by hook tongue main body one end, hook tongue main body offers bar v notch v, axially offer bar hole in the middle part of described dead bolt, lock housing front end be provided with run through lock housing dead bolt pin and dead bolt pin successively through bar v notch v and bar hole.

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

In above-mentioned a kind of safe-guard door lock, be provided with the opening bearing pin running through dead bolt in the middle part of dead bolt, the above-mentioned dead bolt hook other end to be set on opening bearing pin and with opening bearing pin for axis 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 opening bearing pin.

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

Compared with prior art, the present invention has following beneficial effect: first, installs two symmetrical dead bolt hooks in dead bolt simultaneously, makes the axial latching force of dead bolt both sides balanced, and its locking performance is stronger, and anti-theft effect is better, secondly, component of the present invention are less, self structure is simple, lock housing is provided with and turns round circle, directly just can control opening and closing of the flexible of dead bolt and dead bolt hook by the outside key that inserts, can directly use as primary door latch, without the need to combinationally using with other door lock, overall structure is simple, its probability broken down reduces greatly, can not be affected it use normally, application life is more of a specified duration, 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 comparing existing double lock tongue hook is more economical, use cost is lower, what be suitable for is wider.

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, hole is turned round; 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, connecting pin bores; 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, circle is turned round; 61, jack; 62, alignment pin; 63, bearing is connected; 64, dowel hole; 70, spring, 80, decoration panel 81, installing hole two.

Detailed description of the invention

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

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 and lock housing 20 front end are connected, dead bolt 30 to be arranged in lock housing 20 and to be flexibly connected with lock housing 20, and dead bolt 30 moves axially in lock housing 20 and dead bolt 30 front end can be stretched out beyond fixed head 10 through fixed head 10.

As shown in Figure 2, dead bolt 30 inside is provided with symmetrically arranged dead bolt hook 40, the rear end of lock housing 20 is provided with the twisting assembly that is connected with lock housing 20 and twists assembly and connects dead bolt 30 and dead bolt hook 40 simultaneously, dead bolt hook 40 is provided with hook tongue 42, twisting component synchronization control dead bolt 30 moves axially in lock housing 20 and dead bolt hook 40 opens and close, hook tongue 42 when dead bolt 30 stretch out lock housing 20 outer time, hook tongue 42 passes dead bolt 30 and stretches out outside two side, hook tongue 42 is when in dead bolt 30 retracts lock housing 20, and hook tongue 42 is retracted in dead bolt 30.

In dead bolt 30, two dead bolt hooks 40 are installed in axial both sides simultaneously, when dead bolt 30 puts in dead bolt hole, the relative both direction of dead bolt hole is hooked by dead bolt hook 40 simultaneously, reach Bidirectional locking, make the axial latching force of dead bolt both sides balanced, 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, twisting assembly comprise run through lock housing 20 turn round hole 23, be arranged on turn round on hole 23 and be parallel to each other two turn round circle 60 and driver plate 50, driver plate 50 front end is connected with dead bolt 30 and dead bolt hook 40 respectively, driver plate 50 rear end is turned round circle 60 and is flexibly connected with two and turns round between circle 60 two, two turn round the symmetrical parallel setting of circle 60, turn round circle 60 and be cylindrical shape and the one end turning round circle 60 extends outward circular connection bearing 63, turn round circle 60 entirety in axial step shape, to turn round in the middle part of circle 60 and axially offer jack 61 and two jacks 61 turned round on circle 60 are coaxial, connect on bearing 63 and offer three dowel holes 64, wherein two dowel holes 64 are adjacent and be positioned at the side connecting bearing 63, another dowel hole 64 is positioned at the opposite side connecting bearing 63, alignment pin 62 to be arranged in dowel hole 64 and to turn 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 to be set on adjacent one of them alignment pin 62 of two alignment pins 62 by locating hole 1 and to turn round between circle 60 two.

Turn round circle 60 to be arranged in lock housing 20 and himself is rotatable, turning round circle 60 on locus is static relative to lock housing 20, but turn round circle 60 self can circumference rotate, and dead bolt 30 and dead bolt hook 40 all move axially in lock housing, 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 with lock housing 20 inwall time mobile in lock housing 20 and rub, 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 installing driver plate 50 turning round between circle 20 and dead bolt 30, driver plate 50 with turn round circle 60, dead bolt 30 is all flexibly connected, dead bolt 30 and dead bolt hook 40 are remained move 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 turning round hole 23 in lock housing 20 and be provided with erection support 24, erection support 24 is symmetrically arranged two curved support blocks, turning round circle 60 through erection support 24 is arranged on and turns round in hole 23, connect bearing 63 to be resisted against on erection support 24 and back-off shape, turn round hole 23 coaxial with jack 61.

The inner surface of lock housing 20 both ends of the surface is provided with erection support 24, turn round circle 60 through erection support 24, erection support 24 is looped around turns round circle 60 periphery, prevent from turning round circle 60 to move radially, making to turn round circle 60 is that axle center keeps circumference to rotate all the time with the center of circle, reduces the gap turned round between circle 60 and lock housing 20, makes to turn round circle 20 not easily by external world, add the intensity of safe-guard door lock, improve the theftproof performance of safe-guard door lock; Two connection bearings 63 are all resisted against on the erection support 24 of respective side, two erection supports 24 connect bearing 63 and are fixed on lock housing 20 inside by be oppositely arranged two, make to turn round circle 20 can not move axially, preventing turning round circle 60 gives prominence to beyond lock housing 20 end face, keeps the globality turning round circle 60 and lock housing 20.

As shown in Figure 3, driver plate 50 is divided into front portion, the connecting portion 50a of rear portion and medial arc and three is the tabular of integral type, the shape of driver plate 50 is bending tabular, locating hole 1 is positioned at driver plate 50 rear portion 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 mobile in lock housing 20 with the rotation turning round circle 60, and the stroke of dead bolt 30 is longer, if driver plate 50 is linearity, when turning round circle 60 and rotating, the most Long travel of driver plate 50 is the radius turning round circle 60, therefore the due haul distance of dead bolt 30 cannot be reached, and the connecting portion 50a of driver plate 50 is arc, the shift motion turning round driver plate 50 when circle 60 rotates is made to increase and the turnover of dead bolt 30 can be met.

As shown in Figure 2, the angle of dead bolt 30 rear end end face offers the connecting pin bores 32a running through dead bolt 30, connecting pin bores 32a internal fixtion is provided with connecting pin 32, driver plate 50 front end has locating hole 52, driver plate 50 front end is stretched in dead bolt 30, driver plate 50 is set on connecting pin 32 by locating hole 52, spring 70 is provided with 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 one end is fixed on spring fastening 53, the opening bearing pin 33 running through dead bolt 30 is provided with in the middle part of dead bolt 30, the other end of hook tongue main body 41 offers locating hole 3 44, above-mentioned dead bolt hook 40 to be set on opening bearing pin 33 by locating hole 3 44 and with opening bearing pin 33 for axis rotation, spring 70 other end is connected with opening bearing pin 33.

By the locating hole 1 on 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 the opening bearing pin 33 of the spring fastening passed through on spring 70 difference connection for transmission plate 50 and fixing dead bolt hook 40, when turning round circle 60, driver plate 50 controls the opening and closing of moving axially of dead bolt 30 and dead bolt hook 40 simultaneously, its structure is simple, use more convenient, theftproof performance is stronger.

As shown in Figure 2 and Figure 3, the hook tongue 42 that dead bolt hook 40 comprises hook tongue main body 41 and is bent to form by hook tongue main body 41 one end, hook tongue main body 41 surface thereof offers by the bar v notch v 43 extended to hook tongue 42 side in the middle part of hook tongue main body 41, axially offer bar hole 31 in the middle part of dead bolt 30, lock housing 20 front end be provided with run through lock housing 20 dead bolt pin 25 and dead bolt pin 25 simultaneously through bar v notch v 43 and bar hole 3l.

As shown in Figure 4, bar hole 43 is divided into the first breach 43a, second breach 43b, 3rd breach 43c tri-part, first breach 43a is positioned at the axially middle part of hook tongue main body 4l and extends to the side with hook tongue 42 relative direction, first breach 43a is close to the locating hole 3 44 of dead bolt hook 40, second breach 43b immediately the first breach 43a and being extended to hook tongue 42 side by the side of hook tongue 42 relative direction, angle between second breach 43b and the first breach 43a is obtuse angle, 3rd breach 43c is the second breach 43b immediately, 3rd breach 43c near the edge of hook tongue main body 41 and with the sides aligned parallel of hook tongue main body 4l, angle between 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 in the middle part of hook tongue main body 41, 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 driving driver plate 50 to move, under the drag effect of dead bolt pin 25, driver plate 50 drives hook tongue main body 4l to 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 enters in dead bolt hole, dead bolt hook 40 opens and to stretch out dead bolt 30 outside and pin the relative both sides of dead bolt hole simultaneously, make the latching force of dead bolt 30 entirety balanced, the integrated anti-theft effect of safe-guard door lock strengthens.

As shown in Figure 3, side, dead bolt 30 front end axially offers the capable slide opening 1 of bar, 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 is mobile with moving axially in the capable slide opening 1 of bar of dead bolt 30, dead bolt 30 rear end side axial offers the capable slide opening 2 35 of bar, and driver plate 50 is mobile in the capable slide opening 2 35 of bar with the rotation turning round circle 60.

The side of dead bolt is offered the capable slide opening of bar 1 and the capable slide opening 2 35 of bar, so dead bolt can be reduced, the even volume of safe-guard door lock entirety, make safe-guard door lock compact overall structure, and ensure that dead bolt hook 40 and driver plate 50 have sufficient mobile space and ensure that dead bolt hook 40 and driver plate 50 can not rub with dead bolt 30 or lock housing 20 when dead bolt 30 small volume, and the capable slide opening of bar 1 limits the movement locus of dead bolt hook 40 and driver plate 50 with the capable slide opening 2 35 of bar, make dead bolt hook 40 and driver plate 50 can not up and down or left and right play, ensure that dead bolt 20, the normal movement of dead bolt hook 40 and the normal use of safe-guard door lock.

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

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

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

Lock housing 20 is fixedly connected with fixed head 10 through fixing hole 12 by pinch plate 28, make fixed head 10 and lock housing 20 easy to assemble, pinch plate 28 is through bending after fixing hole l2 and being in same plane with fixed head 10, so, decoration panel 80 is fitted with fixed head l0 is fixing, can not gap be produced in the middle of decoration panel 80 and fixed head l0, improve the precision of safe-guard door lock, enhance the theftproof performance of safe-guard door lock.

As shown in Figure 3, a side of enclosing cover 1 offers bayonet socket 29a, side is correspondingly provided with fixture block 29 to enclosing cover 2 22 1, and fixture block 29 snaps in bayonet socket 29a, prevents enclosing cover 1 and enclosing cover 2 22 from axile displacement occurring.

The present invention is four steps at mounting method, it is inner that two dead bolt hook 40 overlaps are placed in dead bolt 30 by the first step, two hook tongues 42 are placed towards lock housing 20 is outer and ensures that hook tongue 42 can stretch out beyond the capable slide opening 1 of bar, by opening bearing pin 33 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 are flexibly connected with dead bolt 30.

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 two and turn round the adjacent to and opposite setting of connection bearing 63 circle 60 also ensureing to turn round circle 60 in corresponding dowel hole 64, the front end of driver plate 50 is placed in dead bolt 30 through the capable slide opening 2 35 of bar inner, by connecting pin 32 successively through the connecting pin bores 32a of dead bolt 30 and the locating hole 2 52 of driver plate 50 front end, make the rear and front end of driver plate 50 respectively with dead bolt 30 with turn round circle 60 and be flexibly connected.

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

4th step, enclosing cover 1 and the pinch plate 28 of enclosing cover 2 22 front end are passed the fixing hole l2 of fixed head 10, then pinch plate 28 is entered in storage tank ll by bending for pinch plate 28 and ensure 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, this safe-guard door lock is installed on security door by external surface decoration panel 80 being arranged on fixed head 10.

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

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

When opening this safe-guard door lock, dead bolt 30 is positioned at dead bolt hole, dead bolt hook 40 pins the relative both sides of dead bolt hole, now key is put in turn round circle 60 turn round in the 6l of hole, inhour rotates key and drives to be turned round circle 60 and rotates, driver plate 50 turn round circle 60 rotate under drive dead bolt 30 to move axially to lock housing 20 rear end, dead bolt 30 is in moving process, spring 70 is elongated and accumulates elastic force, elastic force is discharged when spring 70 reaches maximum pull, dead bolt hook 40 moves with the rear end of dead bolt 30 to lock housing 20 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, second breach 43b, 3rd breach 43c is successively through dead bolt pin 25, when turning round circle 60 rotation and making driver plate 50 be resisted against on the alignment pin 62 away from driver plate 50, dead bolt pin 25 is in the 3rd breach 43c, now dead bolt 30 entirety under the drive of driver plate 50 enters lock housing 20 inside, dead bolt hook 40 is also closed as minimum angles by maximum opening angle 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 amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.

Claims (7)

1. a safe-guard door lock, comprise fixed head (10), lock housing (20) and dead bolt (30), fixed head (10) and lock housing (20) front end are connected, 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), the hook tongue (42) that described dead bolt hook (40) comprises hook tongue main body (41) and is bent to form by hook tongue main body (41) one end, hook tongue main body (41) offers bar v notch v (43), described dead bolt (30) middle part axially offers bar hole (31), lock housing (20) front end be provided with the dead bolt pin (25) that runs through lock housing (20) and dead bolt pin (25) successively through bar v notch v (43) and bar hole (31), dead bolt (30) middle part is provided with the opening bearing pin (33) running through dead bolt (30), it is upper and with opening bearing pin (33) for axis rotation that the other end of above-mentioned two dead bolt hooks (40) is all set in opening bearing pin (33), lock housing (20) rear end is provided with runs through lock housing (20) and the twisting assembly rotated, twisting assembly and dead bolt (30), dead bolt hook (40) is connected, and control dead bolt (30) and pass in and out in lock housing (20), hook tongue (42) stretches out lock housing (20) with dead bolt (30) and passes dead bolt (30) and stretch out outside two side outward, 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 comprise run through lock housing (20) turn round hole (23), be arranged on turn round hole (23) upper and be parallel to each other two turn round circle (60) and driver plate (50), 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 and is enclosed (60) and be flexibly connected and be positioned at two and turn round and enclose between (60), 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: described in turn round circle (60) one end outward radial extend and connect bearing (63), connection bearing (63) is provided with alignment pin (62), the erection support (24) that the periphery of turning round hole (23) is provided with is positioned in lock housing (20), described circle (60) of turning round is arranged on to turn round in hole (23) and connect bearing (63) and is resisted against on erection support (24), described in turn round hole (23) coaxial with jack (61).

4. a kind of safe-guard door lock according to claim 2, it is characterized in that: described driver plate (50) has the connecting portion (50a) of an arc, the two ends of connecting portion (50a) are connected with rear end with the front end of driver plate (50) respectively.

5. a kind of safe-guard door lock according to claim 4, it is characterized in that: on dead bolt (30) side, front end, axially offer the capable slide opening one (34) of bar, 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 turning round circle (60).

6. a kind of safe-guard door lock according to claim 5, 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), spring (70) one end is fixed on spring fastening (53), and the other end is connected with opening bearing pin (33).

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