CA1267522A - Rapidly disconnecting lock for rescue systems - Google Patents
Rapidly disconnecting lock for rescue systemsInfo
- Publication number
- CA1267522A CA1267522A CA000470132A CA470132A CA1267522A CA 1267522 A CA1267522 A CA 1267522A CA 000470132 A CA000470132 A CA 000470132A CA 470132 A CA470132 A CA 470132A CA 1267522 A CA1267522 A CA 1267522A
- Authority
- CA
- Canada
- Prior art keywords
- anchor plate
- quick
- trunnion
- release
- assembly according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000014759 maintenance of location Effects 0.000 claims abstract description 25
- 238000000926 separation method Methods 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 230000000717 retained effect Effects 0.000 claims 1
- 230000033001 locomotion Effects 0.000 description 8
- 101000714541 Danio rerio Cadherin-2 Proteins 0.000 description 7
- 239000000306 component Substances 0.000 description 7
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- HAAITRDZHUANGT-UHFFFAOYSA-N 1-[2-[(7-chloro-1-benzothiophen-3-yl)methoxy]-2-(2,4-dichlorophenyl)ethyl]imidazole;nitric acid Chemical compound O[N+]([O-])=O.ClC1=CC(Cl)=CC=C1C(OCC=1C2=CC=CC(Cl)=C2SC=1)CN1C=NC=C1 HAAITRDZHUANGT-UHFFFAOYSA-N 0.000 description 1
- 101100520142 Caenorhabditis elegans pin-2 gene Proteins 0.000 description 1
- 208000031501 Emergencies Diseases 0.000 description 1
- 102000012152 Securin Human genes 0.000 description 1
- 108010061477 Securin Proteins 0.000 description 1
- 208000036366 Sensation of pressure Diseases 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D17/00—Parachutes
- B64D17/22—Load suspension
- B64D17/30—Harnesses
- B64D17/32—Construction of quick-release box
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Emergency Lowering Means (AREA)
- Earth Drilling (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
ABSTRACT
Disclosed is a quick-release locking buckle assembly for safety harnesses, including a housing, and a main trunnion mounted in the housing which is actuable by a release member. An anchor plate interacts with retaining bolts for retaining belt connection pieces, the anchor plate being biased into a locking position. The trunnion has a reduced portion extending through an orifice in the anchor plate and is guided centrally with respect to the anchor plate. The trunnion has a retention part engageable under the anchor plate and also with a device for the automatic separation of the belt connection pieces from the retaining bolts by means of pressure, independently of the actuation of the release member. A channel extends from the automatic-separation device up to a pressure member acting on the anchor plate counter to the bias being applied to it. The channel is interrupted, in the locking position of the assembly, by a guide pin securing the main trunnion of the assembly.
Disclosed is a quick-release locking buckle assembly for safety harnesses, including a housing, and a main trunnion mounted in the housing which is actuable by a release member. An anchor plate interacts with retaining bolts for retaining belt connection pieces, the anchor plate being biased into a locking position. The trunnion has a reduced portion extending through an orifice in the anchor plate and is guided centrally with respect to the anchor plate. The trunnion has a retention part engageable under the anchor plate and also with a device for the automatic separation of the belt connection pieces from the retaining bolts by means of pressure, independently of the actuation of the release member. A channel extends from the automatic-separation device up to a pressure member acting on the anchor plate counter to the bias being applied to it. The channel is interrupted, in the locking position of the assembly, by a guide pin securing the main trunnion of the assembly.
Description
lZt~7S2~
The invention relates to a quick-release lock for life-saving systems of the type having a housing and a main trunnion actuable in the latter via a release member, and with an anchor plate which interacts with several retaining bolts for belt connection pieces or the like and is stressed into the locking position and through which the main trunnion is guided centrally by means of a narrowed part and engages under the said anchor plate, and also with a device for the automatic separation of the belt connection pieces from the retaining bolts by means of pressure independently of the actuation of the release member.
Quick-release locks of this type are used, for example, as central belt locks for parachutist body or ejector-seat harnesses. They serve for freeing parachutists quickly from their parachute after landing, so that they are not dragged over land or through water when the wind drives the parachute in front of it.
A quick-release lock or central belt lock having the features mentior.-ed is already known from German ~ffenlegungsschrift 3,040,134. In the known arrangement, the main trunnion has a longitudinal bore in which a slide is mounted so as to be longitudinally displaceable, secure against rotation relative to the main trunnion and releasable via a release member. There is also a force accumulator in the lock housing which is tripped on coming into contact with water and, as result of the pressure exerted, guides a blocking member out of the main trunnion and causes subsequent axial displacement of the slide, with the result that the anchor plate is displaced downwards and the anchoring of the belt connection pieces is consequently released.
It is to be considered a disadvantage of the known arrangement that it consists of a plurality of individual components which act with one another and in one another, and under frequently occurring stress signs of wear and 12675iZZ
then inoperability of the automatic-separation device can arise. Furthermore, because of the various components arranged under the release member, the constructional height of locks of this type is increased, and this is a great disadvantage.
The object on which the invention is based is to provide a quick-release lock for life-saving systems, which has a simple construction and a low height and which unlocks automatically in emergency situations, without being actuated by the user, independently of the actuation of the conventional components for removing or attaching the belt connection pieces, in order to automate the entire life-saving operation ~emergency situation) and thus make it safer.
To achieve this object, the invention envisages a quick-release lock, in which the pressure exerted by the automatic-separation device is conveyed directly or indirectly to the anchor plate with a force component running counter to the stress direction of the anchor plate, and the anchor plate and/or the part of the main trunnion engaging under the anchor plate have one or more predetermined breaking points.
According to a possible alternative solution, a channel extends from the automatic-separation device up to a pressure member acting counter to the stress direction of the anchor plate, and the channel is interrupted, in the locking position of the main trunnion, by a guide pin _ 2 --126'7SZZ
securing the main trunnion of the lock.
The two alternative embodiments differ in that, in one alternative form, to achieve the automitic release of the anchor plate, the main trunnion itself is freed as a result of the movement of the guide pin out of the locking position with the main trunnion, or else, in the other alternat;ve form, the guide pin remains in the locking position with the main trunnion, and external pressure is exerted or, the anchor plate which is then pressed into the unlocking position, with the predetermined breaking points in the anchor plate and/or in the part of the main trunnion engaging under the anchor plate being broken open at the same time. In both alternative solutions, the anchor plate is preferably subjected directly or indirectly to gas re-leased under pressure.
The advantage of the invention is that it is pos-sible to provide a quick-release lock with an automatic-separation device, in which automatic unlocking is effected by means of a medium put under pressure, preferably gas, but also a liquid, thus guaranteeing excellent operability, because, in contrast to known models, there is no inter-lock;ng of mechanical elements which results in a ready susceptibility to faults. i10reover, the lock can be de-signed with only a small constructional height, so that, Z5 in normal use, it does not disturb a pilot in an ejector seat, for example.
The automatic-separation device can be tripPed in various ways, depending on, among other things, the in-tended use of the particular quick-release lock.
S;~2 For example, water-activated tripping is preferred for parachute harness locks used especially in jumps over the sea. In ~his case, ~he aut ~ ti~-separation device is tripped by means of electri-cal and pyrotechnic devices, utilizing the high conductivity of sea water, thereby releasing a gas or a liquid under pressure which, by acting on appropriate members in the lock, cause the latter to be unlocked. Automatic-separation devices of this type are known, for example from German Offenlegungsschrift 3,040,134.
However, the automatic-separation device can, of course, also be activated via any other suitable characteristic, for example the water pressure.
Quick-release locks of the type according to the invention are used not only in parachutist body harnesses, but on the contrary in a plurality of systems for the rescue of persons, for example in motoring, sailing, acrobatics and mountain-climbing.
Furthermore, these locks are used in sports equipment, such as kites or the like. All these locks will come under the generic definition of a quick-release lock for life-saving systems.
According to a broad aspect of the invention there is provided a quick-release locking buckle assembly for safety harnesses, including a housing, a main trunnion, mounted in said housing, said trunnion being actuable by a release member, an anchor plate which interacts with retaining bolts for retaining belt connection pieces, said anchor plate being biased into a locking position/ said trunnion having a reduced portion extending through an orifice in said anchor plate and guided `1267S2~
centrally with respect to said anchor plate, said trunnion havinq a retention part engageable under said anchor plate, and also ~ith a device for the automatic-separation of the belt connection pieces from the retaining bolts by means of pressure, independently of the actuation of the release member, characterised in that a channel extends from the automatic-separation device up to a pressure member acting on the anchor plate counter to said bias being applied to said anchor plate, and the channel is interrupted, in the locking position of the assembly, by a guide pin securing the main trunnion of the assembly.
In a further aspect the present invention provides a quick release locking buckle assembly for safety harnesses, including a housing, a main trunnion, mounted in said housing, said trunnion being actuable by a release member, an anchor plate which interacts with retaining bolts for retaining belt connection pieces, said anchor plate bein~ biased into a locking position, said trunnion having a reduced portion extending through an orifice in said anchor plate and quided axially with respect to said anchor plate, said trunnion having a retention part engageable with said anchor plate, and further including a pressure devlce for the automatic separation of the belt connection pieceæ from the retaining bolts, independently of the actuation of the release member, characterised in that on a side of the anchor plate facing the release member there is at least one bore in said housing, open towards the anchor plate, said bore having a piston which, in the lockin~ position of the anchor plate, extends from said anchor plate and leaves free, in an upper 4a ~2ti75;~:Z
The invention relates to a quick-release lock for life-saving systems of the type having a housing and a main trunnion actuable in the latter via a release member, and with an anchor plate which interacts with several retaining bolts for belt connection pieces or the like and is stressed into the locking position and through which the main trunnion is guided centrally by means of a narrowed part and engages under the said anchor plate, and also with a device for the automatic separation of the belt connection pieces from the retaining bolts by means of pressure independently of the actuation of the release member.
Quick-release locks of this type are used, for example, as central belt locks for parachutist body or ejector-seat harnesses. They serve for freeing parachutists quickly from their parachute after landing, so that they are not dragged over land or through water when the wind drives the parachute in front of it.
A quick-release lock or central belt lock having the features mentior.-ed is already known from German ~ffenlegungsschrift 3,040,134. In the known arrangement, the main trunnion has a longitudinal bore in which a slide is mounted so as to be longitudinally displaceable, secure against rotation relative to the main trunnion and releasable via a release member. There is also a force accumulator in the lock housing which is tripped on coming into contact with water and, as result of the pressure exerted, guides a blocking member out of the main trunnion and causes subsequent axial displacement of the slide, with the result that the anchor plate is displaced downwards and the anchoring of the belt connection pieces is consequently released.
It is to be considered a disadvantage of the known arrangement that it consists of a plurality of individual components which act with one another and in one another, and under frequently occurring stress signs of wear and 12675iZZ
then inoperability of the automatic-separation device can arise. Furthermore, because of the various components arranged under the release member, the constructional height of locks of this type is increased, and this is a great disadvantage.
The object on which the invention is based is to provide a quick-release lock for life-saving systems, which has a simple construction and a low height and which unlocks automatically in emergency situations, without being actuated by the user, independently of the actuation of the conventional components for removing or attaching the belt connection pieces, in order to automate the entire life-saving operation ~emergency situation) and thus make it safer.
To achieve this object, the invention envisages a quick-release lock, in which the pressure exerted by the automatic-separation device is conveyed directly or indirectly to the anchor plate with a force component running counter to the stress direction of the anchor plate, and the anchor plate and/or the part of the main trunnion engaging under the anchor plate have one or more predetermined breaking points.
According to a possible alternative solution, a channel extends from the automatic-separation device up to a pressure member acting counter to the stress direction of the anchor plate, and the channel is interrupted, in the locking position of the main trunnion, by a guide pin _ 2 --126'7SZZ
securing the main trunnion of the lock.
The two alternative embodiments differ in that, in one alternative form, to achieve the automitic release of the anchor plate, the main trunnion itself is freed as a result of the movement of the guide pin out of the locking position with the main trunnion, or else, in the other alternat;ve form, the guide pin remains in the locking position with the main trunnion, and external pressure is exerted or, the anchor plate which is then pressed into the unlocking position, with the predetermined breaking points in the anchor plate and/or in the part of the main trunnion engaging under the anchor plate being broken open at the same time. In both alternative solutions, the anchor plate is preferably subjected directly or indirectly to gas re-leased under pressure.
The advantage of the invention is that it is pos-sible to provide a quick-release lock with an automatic-separation device, in which automatic unlocking is effected by means of a medium put under pressure, preferably gas, but also a liquid, thus guaranteeing excellent operability, because, in contrast to known models, there is no inter-lock;ng of mechanical elements which results in a ready susceptibility to faults. i10reover, the lock can be de-signed with only a small constructional height, so that, Z5 in normal use, it does not disturb a pilot in an ejector seat, for example.
The automatic-separation device can be tripPed in various ways, depending on, among other things, the in-tended use of the particular quick-release lock.
S;~2 For example, water-activated tripping is preferred for parachute harness locks used especially in jumps over the sea. In ~his case, ~he aut ~ ti~-separation device is tripped by means of electri-cal and pyrotechnic devices, utilizing the high conductivity of sea water, thereby releasing a gas or a liquid under pressure which, by acting on appropriate members in the lock, cause the latter to be unlocked. Automatic-separation devices of this type are known, for example from German Offenlegungsschrift 3,040,134.
However, the automatic-separation device can, of course, also be activated via any other suitable characteristic, for example the water pressure.
Quick-release locks of the type according to the invention are used not only in parachutist body harnesses, but on the contrary in a plurality of systems for the rescue of persons, for example in motoring, sailing, acrobatics and mountain-climbing.
Furthermore, these locks are used in sports equipment, such as kites or the like. All these locks will come under the generic definition of a quick-release lock for life-saving systems.
According to a broad aspect of the invention there is provided a quick-release locking buckle assembly for safety harnesses, including a housing, a main trunnion, mounted in said housing, said trunnion being actuable by a release member, an anchor plate which interacts with retaining bolts for retaining belt connection pieces, said anchor plate being biased into a locking position/ said trunnion having a reduced portion extending through an orifice in said anchor plate and guided `1267S2~
centrally with respect to said anchor plate, said trunnion havinq a retention part engageable under said anchor plate, and also ~ith a device for the automatic-separation of the belt connection pieces from the retaining bolts by means of pressure, independently of the actuation of the release member, characterised in that a channel extends from the automatic-separation device up to a pressure member acting on the anchor plate counter to said bias being applied to said anchor plate, and the channel is interrupted, in the locking position of the assembly, by a guide pin securing the main trunnion of the assembly.
In a further aspect the present invention provides a quick release locking buckle assembly for safety harnesses, including a housing, a main trunnion, mounted in said housing, said trunnion being actuable by a release member, an anchor plate which interacts with retaining bolts for retaining belt connection pieces, said anchor plate bein~ biased into a locking position, said trunnion having a reduced portion extending through an orifice in said anchor plate and quided axially with respect to said anchor plate, said trunnion having a retention part engageable with said anchor plate, and further including a pressure devlce for the automatic separation of the belt connection pieceæ from the retaining bolts, independently of the actuation of the release member, characterised in that on a side of the anchor plate facing the release member there is at least one bore in said housing, open towards the anchor plate, said bore having a piston which, in the lockin~ position of the anchor plate, extends from said anchor plate and leaves free, in an upper 4a ~2ti75;~:Z
2~560-5 region of the bore, a space into ~hich a channel opens, said channel extending from the device for the automatic-separation of the belt connection to said bore and said channel being interrupted, in the locking ~osition of the anchor plate, by a pin securin~ the main trunnion of the assembly.
The following is a description by way of example of certain embodiments of the present invention reference being had to the accompanying drawings in which:
Figure 1 shows a cross-section through a quick-release lock, in the "locked 4b ;12~75~, position", Figure 2 shows a cross-section throu~h a further embodiment of a quick-release lock according to the invention, in the "locked" position, Flgure 3 shows a cross-section through a third embodimen~ of a quick-release lock according to the invention, in the "locked" position.
The quick release lock illustrated in Figure 1 consists essentially of a lock housing 10, a main trunnion 11 axially movable and rotatable centrally in the latter, a rotary grip 12 attached to the end of the main trunnion 11 projecting above the lock housing 10, and retaining bolts 15 ~one of which is shown) which are connected to one another via an anchor plate 14 and which, mounted on springs 17 arranged between the lock-housing base plate 16 and the anchor plate 14, engage through orifices 18 in the bottom part of the lock housing 10 into lateral slo~s 19 of the lock housing 10.
The rotary grip 12 is connected to the main trunnion 11 via a screw 21. The main trunnion 11 has on its periphery grooves 22 extending tangentially and axially. A guide pin 23 slides by means of its front end 23a in the grooves 22, the form of the front free end 23a being selected so that the guide pin 23 can sllde in the groove 22 without play.
The guide pin 23 extends outwards from the groove 22 into the lock housing 10, and directly outside the region of engagement with the main trunnion 11 it has an encircling shoulder shaped extension 24. The guide pin 23 rests with its extension 24 flush in a corresponding '~' 1;~675;~
recess of the lock hous;ng 10. In the direct;on going away from the main trunnion 11, the form of the guide pin 23 then narrows again, and this narrowed portion 25 has adjoining it a second extension 26 which is made disc-shaped and which is supported by means of its outer limi-ting surfaces on a matching recess 27 in the lock housing 10. Starting from the extension 26, the guide pin 23 then runs via a narrowed portion 28 up to its free end 23b facing away from the main trunnion 11. The circular outer sur-faces of the front end 23a of the guide pin 23 and thoseof the extension 24, 26 and those of the narrowed end region 28 are all concentric relative to one another, so that a single central axis 29 of the guide pin 23 is obtained.
The narrowed end region 28 of the guide pin 23 is made tubular, that is to say it has a coaxial recess 33 extending approximately into the region of the narrowed portion 25. By means of the recess 33, the guide pin 23 is attached on a journal 34 so as to be longitudinally displaceable. By means of ;ts end projecting from the re-cess 33, the journal 34 is supported on the lock housing10 via a flange 35.
Located between the flange 35 and that side 26a of the extension of the guide pin 23 which faces away from the main trunnion 11 is a compression spring 38 which on its end faces is supported respectively on the flange 35 and on the extension 26 and which at the same time engages round the narrowed end 28 of the guide pin 23.
In the exemplary embodiment illustratedJ a quick-release lock according to the invention is shown in the ,, ~Z~ ~S;~
"locked" position. In this, the guide pin 23 is inserted by means of its front end 23a into the groove 22 of the main trunnion 11 as a resuLt of the spring action of the spring 38. In conjunct;on with blocking steps (not shown) in the groove 22, the guide pin 23 ensures that the main trunnion 11 can execute rotational and longitudinal move-ments in specific directions only and engages in different positions intended for the functions of "attachment", "locked" tshown in the drawing) and "removal", always in 10 relation to the belt connection pieces.
Starting from the rotary grip 12, the main trun-nion 11 extends in the direction of the lock-housing base-plate 16 into the region of the anchor plate 14 with a constant cross-section. Directly above the anchor plate 15 14, the~main trunnion 11 is then provided ~ith a piston-shaped extension 40 having a diameter larger than that of the upper part of the main trunnion 11.
The piston extension 40 then has adjoining it, in the direction of the lock-nousing baseplate 16, a part 41 2û which has a diameter very much smaller than that of the main trunnion 11 and which engages through an orifice 42 in the anchor Plate 14. The orifice 42 is made essentially rectangular, the width of the orifice 42 being somewhat larger than the diameter of the main trunnion 11 in this 25 part 41.
At the end, there adjoins the part 41 of the main trunnion 11 a retention lug 43 which has an essentially cuboid form, the width and length being selected so that the retention lug 43 can be guided through the orifice 42 lZ~752~
in the anchor plate 14 during assembly. In the exemplary embodiment illustrated, the retention lug 43 is shown in a position rotated approximately 90 relative to the longitudinal extension of the orifice 42, engaging by means of its arms 43a and 43b under the anchor plate 14 which is provided, for this purpose, with a round recess 44 having a diameter somewhat ~arger than the length of the retention lug 43.
The anchor plate 14 which, in the exemplary embodi-ment illustrated, has a rectangular form, but can, for example, also be triangular, polygonal or round, depending on the number of retaining bolts 15, is located in a space 48 of the lock housing 10 and is mounted in its corner regions on compression springs 17 and stressed by these.
The compression springs 17 are attached to the lock-hous-ing baseplate 16 on appropriate extensions 50 of a bearing plate 52 rest;ng on the lock-housing baseplate 16 and are inserted by means of their other end into matching reces-ses 51 of the anchor plate 14. In the prolongation of the recesses 51, the retaining bolts 15 then extend from the surface of the anchor plate 14, project through appropriate orifices in the lock housing 10 and serve for fixing the belt connection pieces (not shown).
In the exemplary embodiment illustrated, showing a belt lock according to the invention in the "locked"
position, the anchor plate 14 is pushed by the compression springs 17 into its highest position, where it rests against a wall 53 of the lock housing 10.
Also located in the lock housing 10 is a gas S~A.
channel which is composed of a gas inflow channel 55 and a gas outflow channel 56. The gas inflow channel 55 ex-tends from a force accumulator ~not shown), for example a pyrotechnic element, located in the lock housing 10 into the region of the chamber 30 formed by the narrowed por-tion 25 of the guide pin 23. The pyrotechnic unit and a sensor located in front of it and intended for tripping it can also be accommodated in a separate housing, for example connected to the lock housing v;a a joint, or as a compLetely separate unit connected to the channel 55 via a pressure hose. It is also possible to have an embodi-ment in which, for example, the sensor is arranged sepa-rate from the lock, whilst the force accumulator, for example a pressure-gas generator, is arranged in or on the lock. The gas outflow channel 56 then extends from the space located on the outs;de of the extension 26 of the guide pin 23 up to an annular gap 58 extending above the part of the piston extension 40 projecting beyond the main trunnion 11.
The mode of operation of a quick-release lock according to the invention, constructed to Figure 1, is as follo~s.
The quick-release lock according to the invention, illustrated in Figure 1, shows the arrangement of the com-ponents relative to one another in the "locked" position, that is to say, for example, during the descent by para-chute of a parachutist. In this case, the belt connection pieces (not shown) of the body harness of the parachutist are introduced into the lateral slots 19 of the lock _ g 12t;7S2~
hous;ng 1û, the retaining bolts 15 pass;ng through them and retaining them securety. To disengage the harness from the lock, it is then usually necessary to rotate the rotary grip 12 and subsequently displace it axiaLly down-wards together with the main trunnion 11, as a result ofwh;ch the anchor plate 14 is pressed downwards and the re-taining bolts 15 are carried with it at the same time, so that the belt connection pieces can slip laterally out of the slots 19.
However, the actuation of the rotary grip 12 and particularly the axial displacement of the release member requ;re a cons;derable exert;on of force, of which~ for example, a parachutist is often no longer capable if he is ;njured. However, for example when the parachutist de-scends over water, it is necessary to free him quickly from the parachute, so that he is not dragged through the w-ater when the wind drives the parachute in front of it.
In the exemplary embodiment illustrated, in the event of contact with water, the force accumulator is 2~ automatically detonated, independently of any action taken by the parachutist, because the higher conductivity of sea water is utilized. Consequently, the force accumulator ;s then detonated spontaneously by means of electr;cal and pyrotechnic devices, thereby releasing gas which is under high pressure and which flows through the gas inflow chan-nel 55 into the chamber 30 between the extensions 24 and 26 of the guide pin 23. ~ecause of the high pressure which builds uP very quickly in the chamber 30, the guide pin 23 is subsequently pressed in the direction of the flange , .
12~i7~;2:~
35 counter to the force of the compression spring 38, the volume of the chamber 30 increasing at the same time.
- During the movement of the guide pin 23 counter to the force of the spring 38, the guide p;n 23 is guided by means of its front end 23a out of the groove 22 of the main trunnion 11 and slides forwards by means of its ex-tension 26 in the direction of the f~ange 35, until there is communication between the chamber 30 and the gas out-flow channel 56, so that the gas flows via the gas inflow channel 55 and the chamber 30 into the gas outflow channel 56 and from there into the annular gap 58.
As a result of the high pressure, the main trun-nion 11 is then moved downwards against the anchor plate, in the direction of the longitudinal axis of the main trunn;on 11, v;a the piston extens;on 4û, on which the pressure acts via the annular gap 58, the anchor plate also be;ng carried downwards counter to the force of the springs 17. A movement of the ma;n trunnion 11 is pos sible, because the guide pin 23 is disengaged from the ma;n trunn;on 11, as before, counter to the force of the spr;ng 38 as a result of the pers;sting gas pressure.
When the anchor plate 14 is pressed down via the piston extension 40, the retaining bolts 15 are then moved downwards at the same time, so that they free the orifices 19 ;n the lock hous;ng 10, and the belt connection pieces can readily slip laterally out of the slots 19 of the lock housing 10.
The parachutist ;s consequently freed from the body harness without any help from himself and cannot be .
f'5~
drayged through the water by the parachute and thus pos-sibly drown.
Thè exemplary embodiment of a quick-release lock according to the invention, illustrated in Figure 2, is of very similar design to that according to Figure 1.
Here again, in an emergency, for example when an injured parachutist fal~s into water, a force accumulator which releases gas under high pressure is detonated via suitable electrical or pyrotechnic devices. This gas flows via the gas inflow channel 55 into the chamber 30 and presses the gu;de pin 23 counter to the force of the spring 38 in the direct;on of the flange 35, specifically until the inflow orifice of the gas outflow channel 56 is accessible from the chamber 30, so that the gas enters the gas outflow channel 56 under high pressure and passes from there into an annular gap 58.
However, in contrast to the embodiment according to Figure 1, the annular gap 58 is not now arranged above a piston extension of the main trunnion 11, but is located above an annular channel 59 which is guided annularly in the lock housing at a distance round the main trunnion 11 and of which the opposite end pointing in the direction of the anchor plate 14 is open. Located in the annular channel 16 is an annular piston 60 which fills the annular channel 59 with the exception of the annular gap 58.
By means of the gas pressure, the annular piston 60 is then pressed downwards in the annular channel 59 in the direction of the anchor plate 14 and at the same time moves the anchor plate 14 downwards counter to the force `:
..
.... :. ~ : , ~' f~
of the springs 17.
The main trunnion 11 is also carried downwards with it, because the guide pin 23 is guided out of the groove 22 as a result of the gas pressure and presses the anchor plate 14 against the arms 43a, 43b of the retention lug 43 in the region of the recess 44.
In the same way as in the operating description of the exemplary embodiment according to Figure 1, during the downward movement of the anchor plate 14, the retaining bolts 15 are carried downwards with it, with the result that the belt connection pieces of the harness of the parachutist can immediately slip out laterally.
The exemplary embodiment shown in Figure 2 illus-trates an alternative locking measure which will come into effect in the event that the guide pin 23 is for any rea-son not guided out of the groove Z2 of the main trunnion 11 completely by means of its front end 23a. This altern-ative embodiment also comes into effect when the gas in-flow channel 55 is guided directly into the annular gap 58 of the annular channel 59.
In such a case, although the gas pressure would still act on the annular piston 60 and endeavour to press the anchor plate 14 down in this way, nevertheless this would be opposed by the resistance of the main trunnion 11, still fixed in its position by the guide pin 23, when the anchor plate 14 presses with i~s underside against the arms 43a, 43b of the retention lug 43, but cannot carry this along with it.
For this reason, two notches 45 forming l2675~f.J
predetermined breaking points are arranged on the under-side of the retention lug 43 approximately underneath the edge region of the orifice 42. When the anchor plate 14 presses against the arms 43a, 43b of the retention Lug 43, because of the force component exerted by the gas pressure, the strength of the retention lug 43 is no longer suf-ficient to withstand this force, and the arms 43a, 43b of the retention lug 43 are sheared off, thus freeing the path for the downward movement of the anchor pLate 14 in the direction of the lock-housing baseplate 16.
In the third illustrated exemplary embodiment ac-cording to Figure 3, the gas pressure released as a result of detonation of the force accumulator (not shown) is not used to disengage the guide pin 23 from the retaining bolt 11, but, as already described briefly above, the gas pres-sure is introduced directly into bores 61 via a gas feed channeL (not shown here). These bores are arranged at a distance from one another in the lock housing 10 and ex-tend uP to the anchor plate 14 by means of their lower ends. Pistons 62 are inserted in the bores 61 so as to be long;tudinally movable, and these fill the space of the bore 61 until only a small space in the upper region re-mains free for the inflow of gas.
Instead of several bores 61, only a single bore Z5 61 with a piston 62 can also be sufficient. It has been shown that, in the case of an anchor plate with three re-taining bolts, only two of which support the main forces, whilst the third retaining bolt is provided for the nega-tive g belt, tripPing by means of a piston 62 located :
:
. .
.
lZ~;75ZZ
between the two retaining bolts 15 is sufficient.
In this embodiment according to Figure 3, notches 45 are provided in the underside of the retention lug 43, in a similar way to Figure 2. Of course, the notches 45 can also be provided in the upper side of the retention lug 43.
When the force accumulator is then detonated and the gas released, it flows through the gas feed channels into the upper region 58 of the bores 61, and the pistons 62 are pressed against the anchor plate 14. The piston or pistons 62 are secured in the particular bore 61 by suit-able means, for example by a spring ring 63 mounted in appropriate grooves in the housing and piston. As a re-sult, the free space in the upper part of the piston or annular channel is keDt free for the gas flowing in, if appropriate, irrespective of the particular position of the lock. As a result, the anchor plate 14 moves down-uards in the direction of the lock-housing base plate 16.
Since the main trunnion 11 ;s fixed in an unchanged posi-tion by the guide pin Z3, the arms 43a, 43b of the reten-tion lug 43 aga;n oppose the downward movement of the an-chor plate 14. However, even in this exemplary embodiment, because of the h;gh gas pressure and the force component consequently exerted on the anchor plate 14, the arms 43a, 43b of the retention lug 43 are sheared off again during the downward movement of the anchor plate 14, so that the latter and the retaining bolts 15 can be readily guided downwards out of the region of engagement with the belt connection p;eces.
~i7522 In th;s exemplary embodiment, it would also be possible, instead of the notches 45 in the retention lug 43, to provide notches in the region of the recess 44 of the anchor plate 14, so that the narrowed region of the anchor plate 14 round the orifice 42 is sheared off when the anchor plate 14 is subjected to pressure, because of the resistance force of the arms 43a, 43b of the retention lug 43, so that the anchor plate together with the retain-ing bolts 15 can then also be readily guided in the direc-tion of the lock-housing base plate 16 counter to the force of the springs 17. For construction and assembly reasons, it seems particularly advantageous to adopt an embodiment of a quick-release lock according to the in-vention which consists of a control of the guide pin 23 according to Figures 1 and 2, that is to say the guide pin 23 being guided out of the groove 22 in the main trunnion 11, and of an individual piston 62 according to Figure 3, into the upper annular gap 58 of which opens the gas outflow channel 56.
The choice of the particular gas pressure or the size of the gas inflow and gas outflow channels and of the notches arranged as appropriate must always be coordinated so that a reliable release of the lock housing in an emer-gency is guaranteed under all circumstances. An important part is also played here, for example, by the strengths of the materials used, for example of the anchor plate 14 and the retention lug 43.
As in the exemplary embodiments described above, predetermined breaking points 45 can also be provided ' :` :
~267~;2~
cumulatively in the retention lug 43 and the anchor plate 14.
Instead of a gas pressure, a liquid pressure can also be built up, although a release of gas is preferred because this can be accommodated more easily in appropriate pressure cartidges and can be released more rapidly and more reliably.
~ . ,
The following is a description by way of example of certain embodiments of the present invention reference being had to the accompanying drawings in which:
Figure 1 shows a cross-section through a quick-release lock, in the "locked 4b ;12~75~, position", Figure 2 shows a cross-section throu~h a further embodiment of a quick-release lock according to the invention, in the "locked" position, Flgure 3 shows a cross-section through a third embodimen~ of a quick-release lock according to the invention, in the "locked" position.
The quick release lock illustrated in Figure 1 consists essentially of a lock housing 10, a main trunnion 11 axially movable and rotatable centrally in the latter, a rotary grip 12 attached to the end of the main trunnion 11 projecting above the lock housing 10, and retaining bolts 15 ~one of which is shown) which are connected to one another via an anchor plate 14 and which, mounted on springs 17 arranged between the lock-housing base plate 16 and the anchor plate 14, engage through orifices 18 in the bottom part of the lock housing 10 into lateral slo~s 19 of the lock housing 10.
The rotary grip 12 is connected to the main trunnion 11 via a screw 21. The main trunnion 11 has on its periphery grooves 22 extending tangentially and axially. A guide pin 23 slides by means of its front end 23a in the grooves 22, the form of the front free end 23a being selected so that the guide pin 23 can sllde in the groove 22 without play.
The guide pin 23 extends outwards from the groove 22 into the lock housing 10, and directly outside the region of engagement with the main trunnion 11 it has an encircling shoulder shaped extension 24. The guide pin 23 rests with its extension 24 flush in a corresponding '~' 1;~675;~
recess of the lock hous;ng 10. In the direct;on going away from the main trunnion 11, the form of the guide pin 23 then narrows again, and this narrowed portion 25 has adjoining it a second extension 26 which is made disc-shaped and which is supported by means of its outer limi-ting surfaces on a matching recess 27 in the lock housing 10. Starting from the extension 26, the guide pin 23 then runs via a narrowed portion 28 up to its free end 23b facing away from the main trunnion 11. The circular outer sur-faces of the front end 23a of the guide pin 23 and thoseof the extension 24, 26 and those of the narrowed end region 28 are all concentric relative to one another, so that a single central axis 29 of the guide pin 23 is obtained.
The narrowed end region 28 of the guide pin 23 is made tubular, that is to say it has a coaxial recess 33 extending approximately into the region of the narrowed portion 25. By means of the recess 33, the guide pin 23 is attached on a journal 34 so as to be longitudinally displaceable. By means of ;ts end projecting from the re-cess 33, the journal 34 is supported on the lock housing10 via a flange 35.
Located between the flange 35 and that side 26a of the extension of the guide pin 23 which faces away from the main trunnion 11 is a compression spring 38 which on its end faces is supported respectively on the flange 35 and on the extension 26 and which at the same time engages round the narrowed end 28 of the guide pin 23.
In the exemplary embodiment illustratedJ a quick-release lock according to the invention is shown in the ,, ~Z~ ~S;~
"locked" position. In this, the guide pin 23 is inserted by means of its front end 23a into the groove 22 of the main trunnion 11 as a resuLt of the spring action of the spring 38. In conjunct;on with blocking steps (not shown) in the groove 22, the guide pin 23 ensures that the main trunnion 11 can execute rotational and longitudinal move-ments in specific directions only and engages in different positions intended for the functions of "attachment", "locked" tshown in the drawing) and "removal", always in 10 relation to the belt connection pieces.
Starting from the rotary grip 12, the main trun-nion 11 extends in the direction of the lock-housing base-plate 16 into the region of the anchor plate 14 with a constant cross-section. Directly above the anchor plate 15 14, the~main trunnion 11 is then provided ~ith a piston-shaped extension 40 having a diameter larger than that of the upper part of the main trunnion 11.
The piston extension 40 then has adjoining it, in the direction of the lock-nousing baseplate 16, a part 41 2û which has a diameter very much smaller than that of the main trunnion 11 and which engages through an orifice 42 in the anchor Plate 14. The orifice 42 is made essentially rectangular, the width of the orifice 42 being somewhat larger than the diameter of the main trunnion 11 in this 25 part 41.
At the end, there adjoins the part 41 of the main trunnion 11 a retention lug 43 which has an essentially cuboid form, the width and length being selected so that the retention lug 43 can be guided through the orifice 42 lZ~752~
in the anchor plate 14 during assembly. In the exemplary embodiment illustrated, the retention lug 43 is shown in a position rotated approximately 90 relative to the longitudinal extension of the orifice 42, engaging by means of its arms 43a and 43b under the anchor plate 14 which is provided, for this purpose, with a round recess 44 having a diameter somewhat ~arger than the length of the retention lug 43.
The anchor plate 14 which, in the exemplary embodi-ment illustrated, has a rectangular form, but can, for example, also be triangular, polygonal or round, depending on the number of retaining bolts 15, is located in a space 48 of the lock housing 10 and is mounted in its corner regions on compression springs 17 and stressed by these.
The compression springs 17 are attached to the lock-hous-ing baseplate 16 on appropriate extensions 50 of a bearing plate 52 rest;ng on the lock-housing baseplate 16 and are inserted by means of their other end into matching reces-ses 51 of the anchor plate 14. In the prolongation of the recesses 51, the retaining bolts 15 then extend from the surface of the anchor plate 14, project through appropriate orifices in the lock housing 10 and serve for fixing the belt connection pieces (not shown).
In the exemplary embodiment illustrated, showing a belt lock according to the invention in the "locked"
position, the anchor plate 14 is pushed by the compression springs 17 into its highest position, where it rests against a wall 53 of the lock housing 10.
Also located in the lock housing 10 is a gas S~A.
channel which is composed of a gas inflow channel 55 and a gas outflow channel 56. The gas inflow channel 55 ex-tends from a force accumulator ~not shown), for example a pyrotechnic element, located in the lock housing 10 into the region of the chamber 30 formed by the narrowed por-tion 25 of the guide pin 23. The pyrotechnic unit and a sensor located in front of it and intended for tripping it can also be accommodated in a separate housing, for example connected to the lock housing v;a a joint, or as a compLetely separate unit connected to the channel 55 via a pressure hose. It is also possible to have an embodi-ment in which, for example, the sensor is arranged sepa-rate from the lock, whilst the force accumulator, for example a pressure-gas generator, is arranged in or on the lock. The gas outflow channel 56 then extends from the space located on the outs;de of the extension 26 of the guide pin 23 up to an annular gap 58 extending above the part of the piston extension 40 projecting beyond the main trunnion 11.
The mode of operation of a quick-release lock according to the invention, constructed to Figure 1, is as follo~s.
The quick-release lock according to the invention, illustrated in Figure 1, shows the arrangement of the com-ponents relative to one another in the "locked" position, that is to say, for example, during the descent by para-chute of a parachutist. In this case, the belt connection pieces (not shown) of the body harness of the parachutist are introduced into the lateral slots 19 of the lock _ g 12t;7S2~
hous;ng 1û, the retaining bolts 15 pass;ng through them and retaining them securety. To disengage the harness from the lock, it is then usually necessary to rotate the rotary grip 12 and subsequently displace it axiaLly down-wards together with the main trunnion 11, as a result ofwh;ch the anchor plate 14 is pressed downwards and the re-taining bolts 15 are carried with it at the same time, so that the belt connection pieces can slip laterally out of the slots 19.
However, the actuation of the rotary grip 12 and particularly the axial displacement of the release member requ;re a cons;derable exert;on of force, of which~ for example, a parachutist is often no longer capable if he is ;njured. However, for example when the parachutist de-scends over water, it is necessary to free him quickly from the parachute, so that he is not dragged through the w-ater when the wind drives the parachute in front of it.
In the exemplary embodiment illustrated, in the event of contact with water, the force accumulator is 2~ automatically detonated, independently of any action taken by the parachutist, because the higher conductivity of sea water is utilized. Consequently, the force accumulator ;s then detonated spontaneously by means of electr;cal and pyrotechnic devices, thereby releasing gas which is under high pressure and which flows through the gas inflow chan-nel 55 into the chamber 30 between the extensions 24 and 26 of the guide pin 23. ~ecause of the high pressure which builds uP very quickly in the chamber 30, the guide pin 23 is subsequently pressed in the direction of the flange , .
12~i7~;2:~
35 counter to the force of the compression spring 38, the volume of the chamber 30 increasing at the same time.
- During the movement of the guide pin 23 counter to the force of the spring 38, the guide p;n 23 is guided by means of its front end 23a out of the groove 22 of the main trunnion 11 and slides forwards by means of its ex-tension 26 in the direction of the f~ange 35, until there is communication between the chamber 30 and the gas out-flow channel 56, so that the gas flows via the gas inflow channel 55 and the chamber 30 into the gas outflow channel 56 and from there into the annular gap 58.
As a result of the high pressure, the main trun-nion 11 is then moved downwards against the anchor plate, in the direction of the longitudinal axis of the main trunn;on 11, v;a the piston extens;on 4û, on which the pressure acts via the annular gap 58, the anchor plate also be;ng carried downwards counter to the force of the springs 17. A movement of the ma;n trunnion 11 is pos sible, because the guide pin 23 is disengaged from the ma;n trunn;on 11, as before, counter to the force of the spr;ng 38 as a result of the pers;sting gas pressure.
When the anchor plate 14 is pressed down via the piston extension 40, the retaining bolts 15 are then moved downwards at the same time, so that they free the orifices 19 ;n the lock hous;ng 10, and the belt connection pieces can readily slip laterally out of the slots 19 of the lock housing 10.
The parachutist ;s consequently freed from the body harness without any help from himself and cannot be .
f'5~
drayged through the water by the parachute and thus pos-sibly drown.
Thè exemplary embodiment of a quick-release lock according to the invention, illustrated in Figure 2, is of very similar design to that according to Figure 1.
Here again, in an emergency, for example when an injured parachutist fal~s into water, a force accumulator which releases gas under high pressure is detonated via suitable electrical or pyrotechnic devices. This gas flows via the gas inflow channel 55 into the chamber 30 and presses the gu;de pin 23 counter to the force of the spring 38 in the direct;on of the flange 35, specifically until the inflow orifice of the gas outflow channel 56 is accessible from the chamber 30, so that the gas enters the gas outflow channel 56 under high pressure and passes from there into an annular gap 58.
However, in contrast to the embodiment according to Figure 1, the annular gap 58 is not now arranged above a piston extension of the main trunnion 11, but is located above an annular channel 59 which is guided annularly in the lock housing at a distance round the main trunnion 11 and of which the opposite end pointing in the direction of the anchor plate 14 is open. Located in the annular channel 16 is an annular piston 60 which fills the annular channel 59 with the exception of the annular gap 58.
By means of the gas pressure, the annular piston 60 is then pressed downwards in the annular channel 59 in the direction of the anchor plate 14 and at the same time moves the anchor plate 14 downwards counter to the force `:
..
.... :. ~ : , ~' f~
of the springs 17.
The main trunnion 11 is also carried downwards with it, because the guide pin 23 is guided out of the groove 22 as a result of the gas pressure and presses the anchor plate 14 against the arms 43a, 43b of the retention lug 43 in the region of the recess 44.
In the same way as in the operating description of the exemplary embodiment according to Figure 1, during the downward movement of the anchor plate 14, the retaining bolts 15 are carried downwards with it, with the result that the belt connection pieces of the harness of the parachutist can immediately slip out laterally.
The exemplary embodiment shown in Figure 2 illus-trates an alternative locking measure which will come into effect in the event that the guide pin 23 is for any rea-son not guided out of the groove Z2 of the main trunnion 11 completely by means of its front end 23a. This altern-ative embodiment also comes into effect when the gas in-flow channel 55 is guided directly into the annular gap 58 of the annular channel 59.
In such a case, although the gas pressure would still act on the annular piston 60 and endeavour to press the anchor plate 14 down in this way, nevertheless this would be opposed by the resistance of the main trunnion 11, still fixed in its position by the guide pin 23, when the anchor plate 14 presses with i~s underside against the arms 43a, 43b of the retention lug 43, but cannot carry this along with it.
For this reason, two notches 45 forming l2675~f.J
predetermined breaking points are arranged on the under-side of the retention lug 43 approximately underneath the edge region of the orifice 42. When the anchor plate 14 presses against the arms 43a, 43b of the retention Lug 43, because of the force component exerted by the gas pressure, the strength of the retention lug 43 is no longer suf-ficient to withstand this force, and the arms 43a, 43b of the retention lug 43 are sheared off, thus freeing the path for the downward movement of the anchor pLate 14 in the direction of the lock-housing baseplate 16.
In the third illustrated exemplary embodiment ac-cording to Figure 3, the gas pressure released as a result of detonation of the force accumulator (not shown) is not used to disengage the guide pin 23 from the retaining bolt 11, but, as already described briefly above, the gas pres-sure is introduced directly into bores 61 via a gas feed channeL (not shown here). These bores are arranged at a distance from one another in the lock housing 10 and ex-tend uP to the anchor plate 14 by means of their lower ends. Pistons 62 are inserted in the bores 61 so as to be long;tudinally movable, and these fill the space of the bore 61 until only a small space in the upper region re-mains free for the inflow of gas.
Instead of several bores 61, only a single bore Z5 61 with a piston 62 can also be sufficient. It has been shown that, in the case of an anchor plate with three re-taining bolts, only two of which support the main forces, whilst the third retaining bolt is provided for the nega-tive g belt, tripPing by means of a piston 62 located :
:
. .
.
lZ~;75ZZ
between the two retaining bolts 15 is sufficient.
In this embodiment according to Figure 3, notches 45 are provided in the underside of the retention lug 43, in a similar way to Figure 2. Of course, the notches 45 can also be provided in the upper side of the retention lug 43.
When the force accumulator is then detonated and the gas released, it flows through the gas feed channels into the upper region 58 of the bores 61, and the pistons 62 are pressed against the anchor plate 14. The piston or pistons 62 are secured in the particular bore 61 by suit-able means, for example by a spring ring 63 mounted in appropriate grooves in the housing and piston. As a re-sult, the free space in the upper part of the piston or annular channel is keDt free for the gas flowing in, if appropriate, irrespective of the particular position of the lock. As a result, the anchor plate 14 moves down-uards in the direction of the lock-housing base plate 16.
Since the main trunnion 11 ;s fixed in an unchanged posi-tion by the guide pin Z3, the arms 43a, 43b of the reten-tion lug 43 aga;n oppose the downward movement of the an-chor plate 14. However, even in this exemplary embodiment, because of the h;gh gas pressure and the force component consequently exerted on the anchor plate 14, the arms 43a, 43b of the retention lug 43 are sheared off again during the downward movement of the anchor plate 14, so that the latter and the retaining bolts 15 can be readily guided downwards out of the region of engagement with the belt connection p;eces.
~i7522 In th;s exemplary embodiment, it would also be possible, instead of the notches 45 in the retention lug 43, to provide notches in the region of the recess 44 of the anchor plate 14, so that the narrowed region of the anchor plate 14 round the orifice 42 is sheared off when the anchor plate 14 is subjected to pressure, because of the resistance force of the arms 43a, 43b of the retention lug 43, so that the anchor plate together with the retain-ing bolts 15 can then also be readily guided in the direc-tion of the lock-housing base plate 16 counter to the force of the springs 17. For construction and assembly reasons, it seems particularly advantageous to adopt an embodiment of a quick-release lock according to the in-vention which consists of a control of the guide pin 23 according to Figures 1 and 2, that is to say the guide pin 23 being guided out of the groove 22 in the main trunnion 11, and of an individual piston 62 according to Figure 3, into the upper annular gap 58 of which opens the gas outflow channel 56.
The choice of the particular gas pressure or the size of the gas inflow and gas outflow channels and of the notches arranged as appropriate must always be coordinated so that a reliable release of the lock housing in an emer-gency is guaranteed under all circumstances. An important part is also played here, for example, by the strengths of the materials used, for example of the anchor plate 14 and the retention lug 43.
As in the exemplary embodiments described above, predetermined breaking points 45 can also be provided ' :` :
~267~;2~
cumulatively in the retention lug 43 and the anchor plate 14.
Instead of a gas pressure, a liquid pressure can also be built up, although a release of gas is preferred because this can be accommodated more easily in appropriate pressure cartidges and can be released more rapidly and more reliably.
~ . ,
Claims (16)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A quick-release looking buckle assembly for safety harnesses, including a housing, a main trunnion, mounted in said housing, said trunnion being actuable by a release member, an anchor plate which interacts with retaining bolts for retaining belt connection pieces, said anchor plate being biased into a locking position, said trunnion having a reduced portion extending through an orifice in said anchor plate and guided axially with respect to said anchor plate, said trunnion having a retention part engageable with said anchor plate, and further including a pressure device for the automatic-separation of the belt connection pieces from the retaining bolts, independently of the actuation of the release member, characterised in that a channel extends from the device for the automatic-separation of the belt connection to a pressure member acting on the anchor plate counter to said bias to said anchor plate, and the channel is interrupted, in the locking position of the anchor plate, by a pin securing the main trunnion of the assembly.
2. A quick-release locking buckle assembly for safety harnesses, including a housing, a main trunnion, mounted in said housing, said trunnion being actuable by a release member, an anchor plate which interacts with retaining bolts for retaining belt connection pieces, said anchor plate being biased into a locking position, said trunnion having a reduced portion extending through an orifice in said anchor plate and guided axially with respect to said anchor plate, said trunnion having a retention part engageable with said anchor plate, and further including a pressure device for the automatic separation of the belt connection pieces from the retaining bolts, independently of the actuation of the release member, characterised in that on a side of the anchor plate facing the release member there is at least one bore in said housing, open towards the anchor plate, said bore having a piston which, in the locking position of the anchor plate, extends from said anchor plate and leaves free, in an upper region of the bore, a space into which a channel opens, said channel extending from the device for the automatic-separation of the belt connection to said bore and said channel being interrupted, in the locking position of the anchor plate, by a pin securing the main trunnion of the assembly.
3. A quick-release assembly according to claim 1 or 2, characterised in that the pin is spring-mounted.
4. A quick-release assembly according to claim 1, characterised in that the channel extends to an extension of the main trunnion, the said extension projecting over an orifice in the anchor plate.
5. A quick-release assembly according to claim 1, characterised in that on a side of the anchor plate facing the release member is located on encircling annual channel open towards the anchor plate, and located in the annular channel is an annular piston which, in a locking position of the lock, extends from an upper surface of the anchor plate and leaves free in an upper region of the annular channel a space into which the channel opens.
6. A quick-release assembly according to claim 1, characterised in that on a side of the anchor plate facing the release member there is at least one bore in said housing, open towards the anchor plate, said bore having a piston which, in the locking position of the anchor plate extends from said anchor plate and leaves free, in an upper region of the bore, a space into which the channel opens.
7. A quick-release assembly according to claim 2 or 6, characterised in that a plurality of bores and pistons are arranged between the retaining bolts for the belt connection pieces.
8. A quick-release assembly according to claim 1 or 2, characterised in that the part of the main trunnion engageable under the anchor plate is a retention lug of essentially cuboid form and has at least one arm engaging under the anchor plate.
9. A quick-release assembly according to claim 1 or 2, characterised in that the anchor plate has, on a side facing away from the main trunnion, a round recess for receiving the retention part.
10. A quick-release assembly according to claim 1 or 2.
characterised in that the anchor plate is spring-loaded.
characterised in that the anchor plate is spring-loaded.
11. A quick-release assembly according to claim 1 or 2, characterised in that the automatic-separation device is a unit generating a gas pressure.
12. A quick-release assembly according to claim 1 or 2, characterised in that the automatic-separation device is a water-activated device.
13. A quick-release assembly according to claim 1 or 2, characterised in that the automatic-separation device consists of a unit located inside the housing.
14. A quick-release assembly according to claim 1 or 2, characterised in that the automatic-separation device consists of a unit connected to the assembly via a pressure hose.
15. A quick-release assembly according to claim 7, characterised in that each piston is arranged securely, but displaceably, in a position.
16. A quick-release assembly according to claim 15, characterised in that each piston is retained via a spring ring engaging in a groove in the housing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3345319A DE3345319C2 (en) | 1983-12-15 | 1983-12-15 | Quick release lock for rescue systems |
| DEP3345319.5 | 1983-12-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1267522A true CA1267522A (en) | 1990-04-10 |
Family
ID=6216959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000470132A Expired - Fee Related CA1267522A (en) | 1983-12-15 | 1984-12-14 | Rapidly disconnecting lock for rescue systems |
Country Status (5)
| Country | Link |
|---|---|
| CA (1) | CA1267522A (en) |
| DE (1) | DE3345319C2 (en) |
| FR (1) | FR2556571B1 (en) |
| GB (1) | GB2151693B (en) |
| ZA (1) | ZA849610B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6539595B1 (en) | 2001-06-29 | 2003-04-01 | Charles E. Benedict | Non-inertial release safety restraint belt buckle system |
| GB2517197B (en) * | 2013-08-15 | 2015-07-29 | Martin Baker Aircraft Co Ltd | A buckle assembly with resetting arrangement |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1985884U (en) * | 1967-12-22 | 1968-05-22 | Gerd Knippschild | SELF-OPENING CLOSURE FOR SAFETY BELTS. |
| US3967797A (en) * | 1975-01-08 | 1976-07-06 | The United States Of America As Represented By The Secretary Of The Navy | Electrically activated pendant release mechanism |
| DE3040134A1 (en) * | 1980-10-24 | 1982-07-22 | Autoflug Gmbh, 2084 Rellingen | RELEASE DEVICE FOR PARACHUTE BELTS |
-
1983
- 1983-12-15 DE DE3345319A patent/DE3345319C2/en not_active Expired
-
1984
- 1984-12-11 ZA ZA849610A patent/ZA849610B/en unknown
- 1984-12-14 GB GB08431660A patent/GB2151693B/en not_active Expired
- 1984-12-14 FR FR8419117A patent/FR2556571B1/en not_active Expired
- 1984-12-14 CA CA000470132A patent/CA1267522A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| GB8431660D0 (en) | 1985-01-30 |
| FR2556571A1 (en) | 1985-06-21 |
| GB2151693A (en) | 1985-07-24 |
| DE3345319C2 (en) | 1986-09-04 |
| DE3345319A1 (en) | 1985-06-20 |
| ZA849610B (en) | 1985-07-31 |
| GB2151693B (en) | 1987-12-23 |
| FR2556571B1 (en) | 1988-12-30 |
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