CN102131995A

CN102131995A - Easily installed and non-defacing security latch

Info

Publication number: CN102131995A
Application number: CN200980118023.XA
Authority: CN
Inventors: 戈登·C·唐
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-05-15
Filing date: 2009-05-15
Publication date: 2011-07-20
Also published as: EP2430267A1; CA2718451A1; WO2010132044A1; EP2430267A4

Abstract

Embodiments of the present invention include door-securing latches that allow an occupant of a room or other space accessed through a door to secure the door, from inside the room or other space, in order to prevent entry or access by others. Embodiments of the present invention provide a mechanically strong and secure latch that cannot be easily broken or compromised by application of force to the door or by insertion of a tool or device between the door and an adjacent door frame to disable the latch, but that can be disabled by a knowledgeable individual, such as an apartment manger seeking to rescue a disabled apartment occupant in an emergency situation.

Description

Install easily and the safe breech lock that can not damage

Technical field

The present invention relates to safety device, particularly relate to latch, this latch makes that the occupants in house can fixed gate, and installs easily, and can not damage door or door frame, and be not easy owing to apply power or owing to insertion instrument between door and door frame lost efficacy to door.

Background technology

Door lock and breech lock used several thousand.In people's historical process, a lot of dissimilar breech locks and lock have been designed, have made, have installed and used.The same with any technology, the design of door lock and breech lock and manufacturing have developed into as time passes and have comprised a lot of new features and thought.The same with any technology, the lock of fine work and breech lock may be not favourable or unactual under other situation in some cases, and always have the current lock of improvement and the potentiality of breech lock usually, particularly in special purposes and environment.

Summary of the invention

Embodiments of the invention comprise a safe breech lock, and it makes the house or the occupants in other space of entering by door can be from the house or this door of the internal fixation in other space, so that prevent that other people from entering or approaching.Embodiments of the invention are designed to satisfy multiple application restriction, comprise the breech lock that mechanically robust and safety are provided, it can not be by applying power or being destroyed easily by insertion instrument or device between door and adjacent door framework (so that make breech lock lose efficacy) or impaired to door, but it can be by the people of understanding, room administrative staff and losing efficacy for example with simple method, so that the room occupants of rescue deformity in case of emergency, this method can not cause door and/or door frame is impaired or damage.Embodiments of the invention can be installed not damaging under the door or the situation of door frame outward appearance, thereby make door and/or door frame fixedly easily to return to original state after the breech lock removing door, and can be operated intuitively by the user.

Description of drawings

Figure 1A-B has represented door.

Fig. 2 A-C has represented the common door safety device.

Fig. 3 A-B has represented the intensity of screw along the direction parallel with shank of screw.

Fig. 4 A-B has represented the intensity of screw edge with the shank of screw vertical direction.

Fig. 5 A-E has represented a plurality of embodiment of safe breech lock, and this safe breech lock has been represented first group of embodiment of the present invention.

Fig. 6 A-E has represented the layout of the safety breech lock embodiment of the present invention shown in Fig. 5 A-E.

Fig. 7 A-C has represented to be opened by the part of the door of safety latch fixation, and this safe breech lock is represented the first embodiment of the present invention.

Fig. 8 has represented according to one embodiment of present invention, is used for the mark door frame so that the template of milling.

Fig. 9 has represented the One-way screw of the first kind, and it represents one embodiment of the present of invention.

Figure 10 A-B has represented the One-way screw of second type, and it represents one embodiment of the present of invention.

Figure 11 has represented to be used for a cover erecting tools of safe breech lock, and this safe breech lock is represented the first embodiment of the present invention.

Figure 12 A-D has represented a plurality of embodiment of safe breech lock, and this safe breech lock is represented second group of embodiment of the present invention.

Figure 13 A-C has represented the layout of the safety breech lock embodiment of the present invention shown in Figure 12 A-D.

Figure 14 A-C has represented the layout of the safety breech lock embodiment of the present invention shown in Figure 12 A-D.

Figure 15 A-C has represented the of the present invention the 3rd safe breech lock embodiment.

Figure 16 A-C has represented the layout of the safety breech lock embodiment of the present invention shown in Figure 15 A-C.

Figure 17 A-D has represented from the outside of door the safety breech lock embodiment of the present invention shown in Figure 15 A-C to be lost efficacy.

The specific embodiment

Embodiments of the invention comprise the fixing breech lock of door, and it makes the house or the occupants in other space of entering by door can be from the house or this door of the internal fixation in other space, so that prevent that other people from entering or approaching.Embodiments of the invention provide the breech lock of mechanically robust and safety, it can not be by applying power or easily destroying by insertion instrument or device between door and adjacent door framework (so that making lock lose efficacy) or impaired to door, but it can be by the people of understanding, room administrative staff and losing efficacy for example with simple method, so that the room occupants of rescue deformity in case of emergency, this method can not cause door and/or door frame is impaired or damage.Embodiments of the invention can be installed not damaging under the door or the situation of door frame outward appearance, thereby make door and/or door frame fixedly easily to return to original state after the breech lock removing door, and can be operated intuitively by the user.Some embodiment of the present invention allows fixedly to be opened the door part of latch fixation by door of the present invention, so that allow the occupants in house or other space and portion outdoors people's talk, receive mail or note or otherwise exchange, a maintenance safety locking simultaneously with space outerpace.

Figure 1A-B has represented door.Door 102 is placed in the door frame, and is maintained in its closed position by breech lock (not shown among Figure 1A), and this breech lock is return by the door knob 104 that is rotatably installed on the door.When door was closed, the internal cavities of breech lock from door passed the crash panel 106 that is installed on the door frame 108 and stretches in the cavity in the door frame, and door is installed in this door frame 108.When breech lock (110 among Figure 1B) passes when a complementary crash panel 112 being installed being retracted in the door by the rotary door knob, door can be opened, as shown in Figure 1B.

The door knob can comprise button latch 114 and the corresponding key on outer side of door (not shown among Figure 1A-B), and like this, door can the locking internally by pressing button, perhaps by insertion and key and from external locking.Although door knob fastening system provides certain safety, the occupants of room, room, hotel and other room and space (they enter by door) also distrusts a door knob fastening system usually.Key may be stolen or be forged, and criminal can use usually at the common picklock of wide-scale distribution on the internet and picking lock instrument and easily pry open even expensive lock.And, when the occupants opens door (as shown in Figure 1B) a little so that receive note or when talking with the visitor, if the door that the visitor attempts to open by the part by force enters, this door can not be fixed once more.

Fig. 2 A-C has represented common door safety device.At the device shown in Fig. 2 A-C (being called " bolt chain ") is an example can buying on the market with normally used number of different types safety breech lock.The latch chain often runs into, and an example of the various shortcomings of most of these safe breech locks is provided.The bolt chain comprises mounting fixing parts 202, chain 204, slider 206 and slider rails installed part 208.Chain 204 permanently is installed on the mounting fixing parts 202, and is permanently secured on the slider 206.Mounting fixing parts 202 is fastened on the door 209 by four screw 210-213, and slider rails installed part 208 is fastened on the door frame 214 by four screw 215-218.In Fig. 2 A, do not arrange the bolt chain, and door can open and close by using door knob 220.Breech lock is by in the wide part 222 that slider is arranged on slider rails and slider is slided towards door arrange, as shown in Fig. 2 B.In the narrow part 224 of track, the base portion part 226 of slider is maintained fixed in orbit.As shown in Fig. 2 C, door can be opened the part, but keeps locking by the bolt chain.

The bolt chain has a lot of shortcomings.At first, chain is relatively little usually, has thin chain link, and can rupture by applying sufficient force to door.Secondly, screw can be mounted to and make the power that is applied on the door apply along the direction parallel with shank of screw, and when when door applies sufficient force, this shank of screw can easily pull from wooden door frame and door.Moreover, when the bolt chain is installed more securely, and when using the chain of very big specification, if the manager in room or hotel need in case of emergency enter inhabited room or room, hotel, when the occupants can not make the bolt chain lose efficacy, may be difficult to make the bolt chain to lose efficacy.At last, the installation of bolt chain need get out 8 screw holes in the inner face of door frame and door, when moulded parts is crooked shape, fan-shaped or other non-planar shaped, usually need the moulded parts on door frame and/or the door be cut or milling (routed), so that slider rails installed part 208 and/or mounting fixing parts 202 are installed securely.8 screw holes and attached cutting may cause the inner face of door and door frame obviously to be damaged, and can not be by room manager or landlord's acceptance.

The a lot of dissimilar safe breech locks of current use all have some or all shortcomings of bolt chain, and may have additional drawback.For example, the rigidity breech lock with track and ball mechanism runs in the hotel of being everlasting.These rigid mounts may be not directly perceived, and be difficult in case of emergency unblank in the dark or by alarmed house occupants.Identical with above-mentioned bolt chain, these Unit Installation may cause door and door frame obviously to be damaged.

Fig. 3 A-B has represented the intensity of screw edge with the shank of screw parallel direction.In Fig. 3 A, wood screw 302 is expressed as and is installed in timber or the door frame 304, so that bolt lock mechanism 306 is fastened on door or the door frame.Shank of screw 308 has occupied the cylindrical hole that pierces in the wood, around screw thread 310 incision in the wood so that with screw on wood.As shown in Fig. 3 B, have only wooden thin hollow cylindrical pipe 312 that screw is remained in the wood, the wall thickness of this thin hollow cylindrical pipe 312 equals the distance that screw thread protrudes from threaded rod.By bolt lock mechanism along the direction that is parallel to shank of screw 314 be applied to power on the screw can easily from wooden piece, shear wooden should thin hollow cylindrical pipe, particularly because the wall of wooden thin hollow cylindrical pipe in the installation process of screw, cut by screw thread.Basically, screw is held in place by the shearing resistance of the wooden area that equates with the superficial area of the thin hollow cylindrical pipe of wood.

Fig. 4 A-B has represented the intensity of screw along the direction vertical with shank of screw.As shown in Fig. 4 A-B, when lateral force when being applied on the screw by bolt lock mechanism with surperficial parallel with the vertical direction of door or door frame 402 with shank of screw, have two kinds and seem possible failure mode.Shank of screw can be sheared along the direction vertical with shank of screw 404, and perhaps screw can be around the axis vertical with shank of screw 406 rotation, thereby tears two parts 410 and 412 of wooden dish type volume, shown in Fig. 4 B.Clearly say,, need much bigger lateral force is applied on the screw in order to make screw with any one inefficacy in these two kinds of failure modes.The shearing resistance of wood screw is far longer than the shearing resistance on wooden relatively little surface usually.The power required with shearing wooden relative little surface is compared, and the wood of big relatively volume is torn the common much bigger power that also needs to apply in wooden volume.Therefore, make and to cause lateral force to be applied on the mounting screw of breech lock (as shown in Fig. 4 A-B) when bolt lock mechanism is mounted to the power that door applies, rather than the power that causes being parallel to shank of screw is when being applied on the mounting screw of breech lock (as shown in Fig. 3 A-B), and bolt lock mechanism will can stop more owing to cause impaired or break to the power that applies that this bolt lock mechanism is installed.

Fig. 5 A-E has represented a plurality of embodiment of safe breech lock, and these safe breech locks are represented first group of embodiment of the present invention.As shown in Fig. 5 A-E, first group of safety breech lock embodiment of the present invention comprises breech lock, and this breech lock comprises door frame installed part 502, hinged latch arms 504 and latch pin track 506.The latch pin track is represented with different angles in Fig. 5 B-D: straight seeing in Fig. 5 B, in Fig. 5 C, see with the external surface of latch pin track is angled, among Fig. 5 D on the edge, to see.

Door frame installed part 502 comprises the general flat plate, has four hole 510-513, and screw 516-519 passes these four hole 510-513 door frame installed part 502 is installed on the door frame.These holes are recessed a little, stretch in the door frame in the embodiment of the invention shown in Fig. 5 A.Two

holes

510 and 511 are ellipse or slit-like, have rounded end.Pass the screw 518 these holes installed and 519 and be One-way screw roughly, as hereinafter described, this One-way screw can utilize the screwdriver installation, but can not use screwdriver to take off.Two screws 516 that pass that circular hole 512 and 513 installs and 517 are plain screw roughly, and they can utilize screwdriver to mount and dismount.Flange 522 helps the door frame installed part is fixed on the door frame, outwards promote owing to put on the edge 524 that leans against door frame thereby prevent the door frame installed part, and make the door frame installed part be located such that breech lock flushes (shown in knowing among Fig. 6 A) with latch pin track on being installed in door.Shim or pad can insert between the edge of flange and door frame, so that regulate breech lock along the position of the direction vertical with the plane of door with respect to the door plane.Hinged latch arms 504 comprises first pivot pin 526, this first pivot pin 526 is rotatably installed in the first hinged latch arms part 528 on the door frame installed part 502, the tenon arm 534 that this first pivot pin is passed in the top mortise arm 530 at the first end place of first hinged latch arms part and bottom mortise arm 532 and stretches out from door frame installed part 502.The first hinged latch arms part 528 is rotatably installed on the chain link 538 by second pivot pin 536, and this second pivot pin is passed in the top mortise arm 540 and the bottom mortise arm 542 at the second end place of the first hinged latch arms part.The second hinged latch arms part 544 is rotatably installed on the chain link 538 by the 3rd pivot pin 546, and the 3rd pivot pin is passed in the top mortise arm 548 and the bottom mortise arm 550 at the first end place of the second hinged latch arms part.Latch pin 552 is installed on second end of the second hinged latch arms part 544.

Latch pin track 507 is installed on the door by two

screws

554 and 556, the head of these two screws and the flush of passing the rectangular channel of latch pin track extension.Groove comprises one or more baffle plates 560 (among Fig. 6 B clearer shown in), and this baffle plate 560 prevents that latch pin from unhinderedly returning along groove.When latch arrangement, latch pin 552 passes 562 assemblings of breech lock pin-and-hole, so that be slidably mounted in the groove.The vertical size in the inside of groove is greater than the channel opening in the surface of latch pin track.In case latch pin slides off breech lock pin-and-hole 562 along groove, latch pin on breech lock pin rod 570 (this breech lock pin rod 570 be installed in breech lock on latch pin) and below the top 566 and the bottom 568 of extending be fixed in the groove, and can not from groove, pull out.In other words, latch pin has only when just can the insertion groove neutralization taking out from this groove on time with 562 pairs of breech lock pin-and-holes.

Fig. 5 E has represented the optional embodiment of safe breech lock.In this optional embodiment, door frame installed part 572 comprises that 3 circles are recessed into hole 574-576, and three screw 578-580 pass these three recessed hole 574-576 door frame installed part 572 is installed on the door frame.

Fig. 6 A-E has represented the layout of the safety breech lock embodiment of the present invention shown in Fig. 5 A-E.At open position, as shown in Fig. 6 A, breech lock 602 passes door frame and extends.Latch pin 604 can the motion in a horizontal plane by this latch pin of operation, and like this, hinged latch arms part is around pivot pins, and change they relative to each other orientation and with respect to the orientation of chain link and door frame installed part.In Fig. 6 B, breech lock is towards latch pin track 606 motion, and in Fig. 6 C, latch pin even further towards the latch pin orbital motion.

Baffle plate 608 is clearer seeing in Fig. 6 A-C.Baffle plate is included in the deflector 610 in the bottom part of groove 612, when latch pin along groove from than the position at the more close door of baffle plate edge when the latch pin track, opposite with edge end slides past deflector, this deflector 610 makes latch pin inwardly enter in the recessed portion 614 in the rooved face.Complementary deflector also can be formed in the top part of groove.Baffle plate guarantees that latch pin can not shaking or vibrate and slide back to the breech lock pin-and-hole from fastening position by door.In fact, latch pin deflects in the recessed portion 614, and this recessed portion has straight back edge, and latch pin will be against this back edge.Latch pin easily manually is back to track, is used for taking out so that slide back to the breech lock pin-and-hole.Track is formed at the bottom of groove and top, and the end of latch pin is fixed in this track slidably.Track is linear, enters in the recessed portion 614 except deflector makes track slope inwardly.In optional embodiment of the present invention, can comprise additional stops.

In Fig. 6 D, breech lock curls always, so that the latch enable pin can insert in the breech lock pin-and-hole.At last, in Fig. 6 E, latch pin along groove and slide to fastening position, simultaneously latch pin with latch pin rail end that the edge of door flushes near against the end of groove.Should be known in that upper and lower track (sliding in this track in the end of latch pin) stopped before arriving the latch pin rail end, like this, latch pin can not skid off the latch pin track at each end of latch pin track.

Fig. 7 A-C has represented to be opened by the door part of safety latch fixation, and this safe breech lock is represented the first embodiment of the present invention.In Fig. 7 A, door has been opened a seam, and hinged latch arms part makes breech lock extend along inward direction around the pivoted of pivot pin, so that allow door to open a little, latch pin remains fixed in the latch pin track simultaneously.In an embodiment of the present invention, as shown in Fig. 7 C, when latch pin occupied some position range along groove, the geometry of breech lock, latch pin and latch pin track prevented that door from opening a seam.Certain embodiments of the invention address this problem like this, promptly comprise slot like aperture (510 and 511 among Fig. 5 A), so and below four hole 510-513, shallow slit-like cavity cuts out from profile.When door can not be opened a seam, as shown in Fig. 7 C, building manager or hotel management person were difficult to make safe breech lock to lose efficacy, so that disabled house occupants or room, the hotel occupants of rescue.Yet the promotion door will expose the head of screw in door frame installed part (502 among Fig. 5 A) to the position shown in Fig. 7 C forward.The rescue personnel can use the power tool of screwdriver or equipment screwdriver to take out the screw 516-517 of two regular heads.Then, the rescue personnel can make shoulder lean against on the door, perhaps otherwise apply power to door, so that inwardly push the door frame installed part, freely-movable in the slit-like cavity that the recessed portion in while hole cuts in door frame, and the door frame installed part is in the slip underneath of two One-way screw 518-519.In other words, when the door frame installed part was correctly installed, the distance that the door frame installed part can inwardly slide equaled the length of slot like

aperture

510 and 511, and wherein, One-way screw at first is installed in the inner of slot like aperture.In case the door frame installed part is to front slide, door is enough opened, insert so that allow the rescue personnel that reciprocating saw blade is passed opening, so that sawed-off breech lock, thereby allow to enter the house.Should be known in that safe breech lock can be installed in the either side of door in other words, perhaps is reverse.Should also be appreciated that, all cut and hole and all carry out, rather than on inner face, carry out that like this, the inner face of door frame can't be damaged at the edge of door frame.Screw hole can easily use plastic wood or other filler to fill.Although get out two screw holes in door, they also can be filled after removing safe breech lock.Usually, compare with the screwed hole that four tight spacings of the breech lock of current use are opened, one or two screwed hole will be still less impaired, and can not cause the obvious damage of door usually.

Fig. 8 has represented to be used for the mark door frame according to an embodiment of the invention so that carry out the template of milling.Template is arranged on the profile, and flange 804 is against the edge of door frame.Then, can be by hole 804-807 index aperture profile on profile of template.Take off template then, and use Milling Machine or other instrument to cut out the slit-like cavity, the degree of depth of this slit-like cavity equals recess or the height of the annular lip protruded from the rear surface of door frame installed part.The bullport that is used for screw is getting out before the cutting or after cutting out cavity.

Fig. 9 has represented the One-way screw of the first kind, and it has represented one embodiment of the present of invention.Present obtainable One-way screw roughly has rounded nose, and this head protrudes from the surface of the fixing flat articles (for example door frame installed part) of One-way screw.Yet the door frame installed part need be made thin and flat, so that allow door can be closed on the door frame installed part.Therefore, present obtainable One-way screw is not suitable for installing the safe breech lock of expression one embodiment of the invention.In case the door in addition open a little, the people who enters house or room, hotel that attempts to force open the door can remove normal screw.Dowel screw 902 can be screwed in the profile, like this, and the flush of first screw head 904 and door frame installed part.Second head 906 and connect second head and the bar 908 of first head can be cut off, pinch off or cut off, so as to stay installation, with the One-way screw of the flush of door frame installed part.

Figure 10 A-B has represented the One-way screw of second type, and it represents one embodiment of the present of invention.The tack One-way screw 1002 of this second type is included in the upper left-hand of the slit 1008 that is used for screwdriver and on the inclined-

plane

1004 and 1006 on the right side, bottom of this slit.The non-sloping edge of slit allows screw to be rotated in a clockwise direction by screwdriver, so that install, but when screwdriver rotated in the counterclockwise direction, sloping edge made screwdriver skid off from slit.

Figure 11 has represented to be used for the erecting tools of safe breech lock, and this safe breech lock is represented the first embodiment of the present invention.Erecting tools comprises: breech lock 1102; Shim 1104 is used for being installed in when needed below the latch pin track; Shim 1106 is used to be installed between door frame and the door frame installed part flange, as top with reference to as described in the figure 5A; And latch pin track 1108.Erecting tools can also comprise: plain screw and One-way screw; Template, for example template that is applicable to door frame installed part structure shown in Fig. 8; And the additional thin pad of different-thickness.

Figure 12 A-D has represented several embodiment of safe breech lock, and this safe breech lock is represented second group of embodiment of the present invention.Shown in Figure 12 A, the same with the first embodiment of the present invention, the second embodiment of the present invention comprises breech lock, and this breech lock comprises door frame installed part 1202 and hinged latch arms 1204.Different with first embodiment of the invention is that the safe breech lock shown in Figure 12 A comprises breech lock head 1206, rather than latch pin.Figure 12 B-C has represented the assembly of latch pin and guiding piece.The assembly 1208 of latch pin and guiding piece comprises latch pin 1210, and latch head is deployed on this latch pin 1210, and latch pin stretches into the lower end of breech lock head bore 1212.Breech lock head 1206 comprises breech lock head guiding flange 1214, and the planar shaped inward flange 1216 of this breech lock head guiding flange 1214 is parallel with the axis of cylindricality breech lock head bore.When the breech lock head is reduced to downwards on the latch pin so that during fixed gate, the planar shaped inward flange of breech lock head guiding flange slides against the left-hand side of the latch pin head guiding piece 1218 of the assembly of latch pin and guiding piece.Subsequently, when door was opened, the breech lock head rotated around latch pin, and like this, breech lock head guiding flange is fixed on below the breech lock head guiding piece, and therefore, breech lock can not be inserted and upwards push away by force by the slit of hand or instrument being passed in the door by the invador.Make the breech lock head around latch pin fully rotate so that the breech lock head by breech lock head guiding piece fixing before, prevent that cutter or instrument from passing that slit in the door is inserted and rising latch arms and make safe breech lock lose efficacy at the mount pin 1211 of the sidepiece of the assembly of latch pin and guiding piece.Figure 12 D has represented the optional embodiment of the safe breech lock shown in Figure 12 A.Safe breech lock among Figure 12 A uses four mounting screw 1220-1223, and four corresponding female hand-hole 1224-1227 that these four mounting screw 1220-1223 pass in the door frame installed part 1202 install.On the contrary, the safe breech lock shown in Figure 12 D only uses two screws.Identical with first group of embodiment of the present invention, some or all mounting screws can be One-way screws, and like this, the invador can not force a part to be opened, and make door frame installed part 1202 unclamp from door frame then, so that make safe breech lock lose efficacy.

Door frame installed part 1202 comprises the general flat plate, and this flat has four hole 1224-1227, and screw 1220-1223 passes these four hole 1224-1227 and door frame installed part 502 is installed on the door frame.The hole is recessed a little, stretches in the door frame in the embodiment of the invention shown in Figure 12 A.Top mortise arm 1230 and bottom mortise arm 1232 fixing big pivot pin 1234, the first hinged latch arms parts 1236 are installed on this big pivot pin 1234.The rear portion of mortise arm helps the door frame installed part is fixed on the door frame, thereby by preventing on the edge that is resisted against door frame that the door frame installed part is extrapolated, and the latch pin on the door frame installed part is located such that breech lock and is installed in door and the assembly of guiding piece flush.Shim or pad can insert between the edge of the rear portion of mortise arm and door frame, so that regulate the position of breech lock with respect to the door plane along the direction vertical with the plane of door.The first hinged latch arms part 1236 is rotatably installed on the big pivot pin 1234 by the cylindrical hole in the first hinged latch arms part.The first hinged latch arms part 1236 is rotatably installed on the chain link 1240 by second pivot pin 1238.Second pivot pin passes top mortise arm 1242 and bottom mortise arm 1244 at the second end place of the first hinged latch arms part.The second hinged latch arms part 1246 is rotatably installed on the chain link 1240 by the 3rd pivot pin 1248, and the 3rd pivot pin passes top mortise arm 1250 and bottom mortise arm 1252 at the first end place of the second hinged latch arms part.Second end of the second hinged latch arms part forms breech lock head 1206.

Figure 13 A-C has represented the layout of the safety breech lock embodiment of the present invention shown in Figure 12 A-D.At open position, as shown in Figure 13 A, breech lock 1302 passes door frame and extends.Breech lock head 1304 can the motion in a horizontal plane by the operation breech lock, and like this, hinged latch arms part is around pivot pins, and change they relative to each other orientation and with respect to the orientation of chain link and door frame installed part.In Figure 13 B, breech lock is towards assembly 1306 motions of latch pin and guiding piece, in Figure 13 C, by making the latch arms whole latch arms that raises of on big pivot pin 1308, upwards sliding, the breech lock head raises, the bottom of breech lock head bore is reduced on the latch pin, and whole latch arms reduces, thereby the breech lock head is resisted against on the bottom platform 1312 of assembly of latch pin and guiding piece.Should be known in that in Figure 13 C the inward flange of breech lock head flange is against the left-hand side of breech lock head guiding piece 1314, as mentioned above.

Figure 14 A-C has represented the layout of the safety breech lock embodiment of the present invention shown in Figure 12 A-D.In Figure 14 A, door is closed.In Figure 14 B, door is opened a seam, thereby door moves inward, and make breech lock head 1402 rotate around latch pin, like this, breech lock head flange 1404 at this moment be positioned at breech lock head guiding piece 1406 on the assembly of latch pin and guiding piece below, the fix in position by breech lock head guiding piece.In Figure 14 C, door is further opened, and latch arms is stretched out fully.Door can not further be opened, and can only pass reciprocating saw that the opening of door inserts or make breech lock lose efficacy by using some other instrument to cut latch arms by use.

Figure 15 A-C has represented the of the present invention the 3rd safe breech lock embodiment.Safe breech lock comprises door frame installed part 1502, and this door frame installed part 1502 replaces being used for the crash panel (Figure 15 A-C is not shown) of door operation bar on door frame, and rotatably keeps having the latch arms 1504 of door holder moving part 1506.In open mode, as shown in Figure 15 A, latch arms is shelved in the right-hand side slit 1508 at top, and the door holder moving part is positioned to away from door.In Figure 15 B, latch arms is rotated from the slit rising and towards door.In Figure 15 C, latch arms is from open position Rotate 180 °, and inserts in the left-hand side slit 1510 on top, thereby against door fixed gate retainer 1506 and prevent that door from opening.

Figure 16 A-C has represented the layout of the safety breech lock embodiment of the present invention shown in Figure 15 A-C.In Figure 16 A-C, safe breech lock is installed in the left side of door.Should be known in that the door frame installed part can be reverse because slit is included in the top and bottom of door frame installed part, and can be installed in the either side of door.In Figure 16 A, safe breech lock is shown in an open position, and latch arms 1600 is shelved in the left-hand side slit on top.Door frame installed part by passing that two or whole four recessed hole 1602-1605 install two or four screws are installed on the door frame.Latch arms comprises: horizontal part 1608, door holder moving part 1610 are installed on this horizontal part 1608; And cylindrical rod 1612, this cylindrical rod 1612 is passed door frame installed part 1614 and is extended.In Figure 16 A, can see easily that the door frame installed part also as crash panel, has the square hole 1616 that is used for door operation bar breech lock.In Figure 16 B, latch arms raises and rotates, and in Figure 16 C, and latch arms is with respect to its initial open position (shown in Figure 16 A) Rotate 180 °, and inserts securely in the right-hand side slit 1618 on top.In this position, the door holder moving part is fixing against door (not shown among Figure 16 A-C), and prevents that door from opening.In this respect, the difference of the third embodiment of the present invention and above-mentioned first, second embodiment is: when the safety latch arrangement, the third embodiment of the present invention does not allow the part to open.

Figure 17 A-D has represented to make the safety breech lock embodiment of the present invention shown in Figure 15 A-C lose efficacy from the outside of door.Safe breech lock does not even allow a part to open, and therefore, safe breech lock can not lose efficacy by using reciprocating saw to pass little opening insertion as first, second embodiment of the present invention.In order to make the safe breech lock shown in Figure 15 A-15C lose efficacy, pass the hole that door frame gets out minor diameter, this hole is parallel with the door frame installed part, and is positioned at the top of door frame installed part.Then, shape memory metal line 1702 passes this hole and inserts, as shown in Figure 17 A.The bending of shape memory metal line, and crooked shape memory metal line is at first by bringing in insertion in the reclinate shape memory metal line.Then, as shown in Figure 17 B-D, shape memory metal line Rotate 180 °, thus be stuck in the bottom side of the horizontal part of latch arms, and its is raise and leave slit in the door frame installed part.In Figure 17 D, safe breech lock lost efficacy.Door can inwardly promote, thereby when door is opened, makes the latch arms rotation.

Although introduced the present invention by specific embodiments, the present invention is not limited to this embodiment.It will be apparent to those skilled in the art that the version in spirit of the present invention.For example, safe breech lock is usually by the metal manufacturing, and comprises the door holder moving part in the third embodiment of the invention shown in Figure 15 A-17D, and this door holder moving part is made or applied by plastics or other polymeric material.Yet, can use various arbitrarily other suitable materials, comprise rigidity plastics and composite material.Latch arms, hinged latch arms part, pivot pin, chain link and door frame installed part can have various different sizes and shape, as long as they are as the above-mentioned effect of playing firm lock door.All embodiment of the present invention are installed by screw or other securing member, make the bar of this screw or other securing member approximate with to open a direction of required power vertical, like this, safe breech lock of the present invention is not easy to lose efficacy by applying the power that is enough to shift out from matrix (screw is installed in this matrix) screw, and interior door and door frame surface can not damaged in installation process.Whole breech lock of the present invention is all operated easily and intuitively, and like this, alarmed or chaotic house occupants can not postpone when fleeing from fire or other emergency.Breech lock can only move along fine definite direction.Only motion in a horizontal plane of latch arms with reference to the described safe breech lock of figure 5A-7C.Latch arms with reference to figure 12A-14C and the described safe breech lock of Figure 15 A-17D is only moved in a horizontal plane and vertically.The freedom of motion of these restrictions helps easy use, also helps the intensity and the soundness of safe breech lock.It is higher that safe breech lock of the present invention and the current safe breech lock of buying of door (for example above with reference to the described bolt chain of figure 2A-C) are compared mechanical strength.Get out pivot hole and some cuttings or the milling that is used for screw although the installation of each embodiment of the present invention comprises, these change major part is to carry out on the surface parallel with the door edge of door frame, therefore invisible usually.And, for first and second embodiment of the present invention, only need one or two screw hole that the assembly of latch pin track or latch pin and guiding piece is installed.When taking off breech lock, these holes can easily be filled.Compare with the hole that a lot of current devices of buying required four are opened between closely, one or two hole makes the possibility of damage of door littler.

Above stated specification has used particular term that complete understanding of the present invention is provided for task of explanation.Yet it will be appreciated by those skilled in the art that must these specific detail in order to implement the present invention.The above stated specification of specific embodiment of the present invention is for the example explanation.They are not to be used for exclusive or to limit the invention to described exact form.Obviously, consider that above-mentioned instruction can carry out multiple variation and change.Represent for the practical application of explaining principle of the present invention and it best and introduced embodiment, thereby can make others skilled in the art come best the present invention and the various embodiment of utilizing by the various versions that are fit to estimate specific use.Should be known in that scope of the present invention determined by the equivalent of following claim and they.

Claims

1. safe breech lock, this safe breech lock comprises:

Breech lock, this breech lock comprise door frame installed part and hinged latch arms; With

The latch pin track.

2. safe breech lock according to claim 1 is characterized in that, this door frame installed part comprises:

The general flat plate, this flat has recessed hole, and screw passes this recessed hole the door frame installed part is mounted to door frame;

Flange, this flange is fixed against door frame, thereby prevents that the door frame installed part is extrapolated, and the door frame installed part is located such that breech lock flushes with the latch pin track; With

The tenon arm.

3. safe breech lock according to claim 2 is characterized in that, this hinged latch arms comprises:

The first hinged latch arms part;

The second hinged latch arms part;

Chain link;

First pivot pin, this first pivot pin rotatably is mounted to the door frame installed part with first hinged latch arms part, the tenon arm that this first pivot pin is passed in the top mortise arm at the first end place of the first hinged latch arms part and bottom mortise arm and stretches out from the door frame installed part;

Second pivot pin, this second pivot pin rotatably is mounted to chain link with the first hinged latch arms part, and this second pivot pin is passed in the top mortise arm and the bottom mortise arm at the second end place of the first hinged latch arms part;

The 3rd pivot pin, the 3rd pivot pin rotatably is mounted to chain link with the second hinged latch arms part, and the 3rd pivot pin is passed in the top mortise arm and the bottom mortise arm at the first end place of the second hinged latch arms part; With

Latch pin, this latch pin are installed on second end of the second hinged latch arms part.

4. safe breech lock according to claim 3 is characterized in that, this latch pin track comprises:

Rectangular channel, this rectangular channel pass the latch pin track and extend, and this rectangular channel comprises one or more baffle plates, and this baffle plate prevents that latch pin from unhinderedly turning back along this rectangular channel; With

Breech lock pin-and-hole, latch pin pass this breech lock pin-and-hole and insert during the layout of safety breech lock.

5. One-way screw, this One-way screw comprises:

Threaded shank of screw; With

Flat head.

6. One-way screw according to claim 5 is characterized in that, the part of the slit in flat head tilts, so that prevent by using screwdriver that One-way screw is rotated in the counterclockwise direction.

7. One-way screw according to claim 5 is characterized in that this One-way screw comprises second head, and this second head is used to install One-way screw, and this second head is removed after installation.

8. safe breech lock, this safe breech lock comprises:

The assembly of latch pin and guiding piece.

9. safe breech lock according to claim 8 is characterized in that, this door frame installed part comprises:

Top mortise arm and bottom mortise arm, this top mortise arm and bottom mortise arm are fixed big pivot pin.

10. safe breech lock according to claim 9 is characterized in that, this hinged latch arms comprises:

The first hinged latch arms part;

The second hinged latch arms part;

Chain link;

Cylindrical hole, this cylindrical hole are positioned at the first end place of the first hinged latch arms part, and big pivot pin passes this cylindrical hole safe breech lock rotatably is mounted to the door frame installed part;

The breech lock head, this latch head portion is positioned at the second end place of the second hinged latch arms part, and this breech lock head comprises the breech lock head bore.

11. safe breech lock according to claim 10 is characterized in that, the assembly of this latch pin and guiding piece comprises:

Latch pin, the breech lock head can rotatably be mounted to this latch pin, and this latch pin stretches in the breech lock head bore; With

Breech lock head guiding piece.

12. a safe breech lock, this safe breech lock comprises:

The door frame installed part and the crash panel of band slit; With

Latch arms, this latch arms have door holder moving part and breech lock arm axle, and this breech lock arm axle extends through the door frame installed part of band slit, so that latch arms rotatably is mounted to door frame.