EP0353348A1 - Safety device - Google Patents
Safety device Download PDFInfo
- Publication number
- EP0353348A1 EP0353348A1 EP88121369A EP88121369A EP0353348A1 EP 0353348 A1 EP0353348 A1 EP 0353348A1 EP 88121369 A EP88121369 A EP 88121369A EP 88121369 A EP88121369 A EP 88121369A EP 0353348 A1 EP0353348 A1 EP 0353348A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft
- safety device
- housing bore
- housing
- wall
- 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.)
- Withdrawn
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
- F42C15/34—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected by a blocking-member in the pyrotechnic or explosive train between primer and main charge
Definitions
- the invention relates to a safety device with a shaft which is rotatably mounted in a housing bore and which has a multiplicity of curved ignition channels, which correspond to openings in the wall of the housing bore in the focused position.
- Such a safety device has become known from DE-PS 35 03 013.
- This device serves to trigger a plurality of weapons of the same kind that are stored in a common housing, simultaneously, in groups or at any time interval. To do this, the shaft must be turned several times from the safe to the arming and back again. It has been shown in operation, however, that after an ignition process, due to the combustion products deposited on the sliding surface between the shaft and the housing, a further rotation of the shaft with the available power of the drive motor is no longer possible.
- the object is achieved in that the diameter of the shaft is smaller than the inner diameter of the housing bore and in that the ignition channels have annular protruding edges, the radially curved outer surfaces of which bear against the inner wall of the housing bore.
- This safety device is the fact that due to the small contact surfaces between the outer surfaces of the edges and the inner wall, the friction between the shaft and the housing is reduced many times over and that the edges of the edges cause self-cleaning when the shaft rotates .
- the only figure in the drawing schematically shows a simplified section through the shaft 2 and one of the ignition channels 3.
- the shaft is rotatably mounted in the housing G by means of bearings (not shown) and is driven by a motor.
- a large number of ignition channels are located in shaft 2, which are curved by an angle of approximately 60 ° ... 90 °.
- the ignition channel 3 corresponds to an opening 7 in the housing G through which the combustion products of an ignition means, not shown, are introduced.
- the diameter d of the shaft 2 is smaller than the inner diameter D of the housing bore 1, so that an air gap 8 is formed.
- the ignition channel 3 is sealed off from the inner wall 6 of the housing G with the aid of sleeves inserted into the shaft, the outer edges 4 of which protrude beyond the shaft. The edges are ground in such a way that an annular radial outer surface 5 is formed, which lies against the inner wall with the formation of a very small air gap. The friction surface between the shaft 2 and the inner wall is thus considerably reduced and the combustion products flow through the ignition channel 3 without loss of pressure.
Abstract
Die Erfindung betrifft eine Sicherheitseinrichtung, die eine Welle (2) mit einer Vielzahl von gekrümmten Zündkanälen (3) aufweist. Die Welle (2) ist hierbei reibungsarm im Gehäuse (G) der Sicherheitseinrichtung gelagert.The invention relates to a safety device which has a shaft (2) with a plurality of curved ignition channels (3). The shaft (2) is low-friction in the housing (G) of the safety device.
Description
Die Erfindung betrifft eine Sicherheitseinrichtung mit einer in einer Gehäusebohrung drehbar gelagerten Welle, die eine Vielzahl von gekrümmten Zündkanälen aufweist, welche in der Scharfstellung mit Öffnungen in der Wand der Gehäusebohrung korrespondieren.The invention relates to a safety device with a shaft which is rotatably mounted in a housing bore and which has a multiplicity of curved ignition channels, which correspond to openings in the wall of the housing bore in the focused position.
Eine derartige Sicherheitseinrichtung ist aus der DE-PS 35 03 013 bekannt geworden. Diese Einrichtung dient dazu, eine Vielzahl von gleichartig zündbaren Waffen, die in einem gemeinsamen Gehäuse gelagert sind, gleichzeitig, in Gruppen oder in beliebigen Zeitabständen auszulösen. Hierzu muß die Welle mehrfach von der Sicher- in die Scharfstellung und wieder zurück gedreht werden. Es hat sich jedoch im Betrieb gezeigt, daß bereits nach einem Zündvorgang aufgrund der sich an der Gleitfläche zwischen der Welle und dem Gehäuse ablagernden Verbrennungsprodukte eine weitere Drehung der Welle mit der zur Verfügung stehenden Leistung des Antriebsmotors nicht mehr möglich ist.Such a safety device has become known from DE-PS 35 03 013. This device serves to trigger a plurality of weapons of the same kind that are stored in a common housing, simultaneously, in groups or at any time interval. To do this, the shaft must be turned several times from the safe to the arming and back again. It has been shown in operation, however, that after an ignition process, due to the combustion products deposited on the sliding surface between the shaft and the housing, a further rotation of the shaft with the available power of the drive motor is no longer possible.
Es ist deshalb Aufgabe der Erfindung, die Sicherheitseinrichtung so zu gestalten, daß auch nach mehreren Zündvorgängen eine funktionssichere Drehung der Welle von der Sicher- in die Scharfstellung und zurück bei den gegebenen Antriebsmitteln gewährleistet ist.It is therefore an object of the invention to design the safety device in such a way that a functionally reliable rotation of the shaft from the safe to the arming and back with the given drive means is guaranteed even after several ignition processes.
Die Aufgabe wird dadurch gelöst, daß der Durchmesser der Welle kleiner als der Innendurchmesser der Gehäusebohrung ist und daß die Zündkanäle ringförmige überstehende Berandungen aufweisen, deren radial gekrümmte Außenflächen an der Innenwand der Gehäusebohrung anliegen.The object is achieved in that the diameter of the shaft is smaller than the inner diameter of the housing bore and in that the ignition channels have annular protruding edges, the radially curved outer surfaces of which bear against the inner wall of the housing bore.
Der besondere Vorteil dieser Sicherheitseinrichtung ist darin zu sehen, daß aufgrund der kleinen Kontaktflächen zwischen den Außenflächen der Berandungen und der Innenwand die Reibung zwischen der Welle und dem Gehäuse um ein Vielfaches reduziert wird und daß die Kanten der Berandung bei der Drehung der Welle eine Selbstreinigung bewirken.The particular advantage of this safety device is the fact that due to the small contact surfaces between the outer surfaces of the edges and the inner wall, the friction between the shaft and the housing is reduced many times over and that the edges of the edges cause self-cleaning when the shaft rotates .
Ein Ausführungsbeispiel gemäß der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben.An embodiment according to the invention is shown in the drawing and will be described in more detail below.
Die einzige Figur der Zeichnung zeigt schematisch vereinfacht den Schnitt durch die Welle 2 und einen der Zündkanäle 3. Die Welle ist mittels nicht dargestellter Lager im Gehäuse G drehbar gelagert und wird von einem Motor angetrieben. In der Welle 2 befinden sich eine Vielzahl von Zündkanälen, die um einen Winkel von etwa 60°...90° gekrümmt sind. In der gezeichneten Scharfstellung korrespondiert der Zündkanal 3 mit einer Öffnung 7 im Gehäuse G, durch die die Verbrennungsprodukte eines nicht dargestellten Zündmittels eingeleitet werden.The only figure in the drawing schematically shows a simplified section through the
Gemäß der Erfindung ist der Durchmesser d der Welle 2 kleiner als der Innendurchmesser D der Gehäusebohrung 1, so daß sich ein Luftspalt 8 ausbildet. Die Abdichtung des Zündkanals 3 gegenüber der Innenwand 6 des Gehäuses G erfolgt mit Hilfe von in die Welle eingesetzten Hülsen, deren äußere Berandung 4 über die Welle übersteht. Die Berandung wird derart abgeschliffen, daß eine ringförmige radiale Außenfläche 5 entsteht, die unter Ausbildung eines sehr kleinen Luftspalters an der Innenwand anliegt. Damit ist die Reibfläche zwischen der Welle 2 und der Innenwand erheblich reduziert und die Verbrennungsprodukte durchströmen ohne Druckverlust den Zünkkanal 3.According to the invention, the diameter d of the
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3823627 | 1988-07-13 | ||
DE3823627A DE3823627A1 (en) | 1988-07-13 | 1988-07-13 | SECURITY DEVICE |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0353348A1 true EP0353348A1 (en) | 1990-02-07 |
Family
ID=6358521
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88121369A Withdrawn EP0353348A1 (en) | 1988-07-13 | 1988-12-21 | Safety device |
Country Status (3)
Country | Link |
---|---|
US (1) | US4898096A (en) |
EP (1) | EP0353348A1 (en) |
DE (1) | DE3823627A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3503013C1 (en) * | 1985-01-30 | 1986-06-26 | Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn | Safety device |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2666388A (en) * | 1945-08-03 | 1954-01-19 | John M Wheeler | Bomb fuze |
US3618527A (en) * | 1968-12-23 | 1971-11-09 | Us Navy | Safety and arming device |
US4407201A (en) * | 1981-05-04 | 1983-10-04 | Honeywell Inc. | Retard sensor and energy converter |
DE3224749A1 (en) * | 1982-07-02 | 1984-01-05 | Gebrüder Junghans GmbH, 7230 Schramberg | Fuse with a safety rotor |
US4483250A (en) * | 1983-04-14 | 1984-11-20 | Thiokol Corporation | Flare manual safety device |
DE3435402A1 (en) * | 1984-09-27 | 1986-04-03 | Gebrüder Junghans GmbH, 7230 Schramberg | SPHERICAL SAFETY ROTOR OF A SPIRAL BULLET IGNITION |
-
1988
- 1988-07-13 DE DE3823627A patent/DE3823627A1/en active Granted
- 1988-12-21 EP EP88121369A patent/EP0353348A1/en not_active Withdrawn
-
1989
- 1989-04-12 US US07/336,705 patent/US4898096A/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3503013C1 (en) * | 1985-01-30 | 1986-06-26 | Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn | Safety device |
Also Published As
Publication number | Publication date |
---|---|
US4898096A (en) | 1990-02-06 |
DE3823627A1 (en) | 1990-01-18 |
DE3823627C2 (en) | 1990-10-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2901489A1 (en) | DEVICE FOR DETECTING AND MOVING INDIVIDUAL AREAS, IN PARTICULAR OF PAPER SHEETS OR PRINTED PRODUCTS | |
EP0589337A1 (en) | Hand tool machine, particularly a hammer drill | |
EP0353348A1 (en) | Safety device | |
EP0087389B1 (en) | Mechanical lock | |
DE2246985A1 (en) | PROGRAM TIMER | |
DE2057217C3 (en) | Pneumatic pulse generator | |
DE3205153C2 (en) | Device for locking a fuse rotor in swirl projectiles | |
DE1902187B2 (en) | ROTARY LISTON MACHINE | |
DE112012004080B4 (en) | Reactive turbine apparatus | |
DE3016126C2 (en) | ||
DE1109822B (en) | Method and device for controlling oscillating burners | |
DE363675C (en) | Lock cylinder | |
DE1703613C3 (en) | Clockwork time fuse | |
DE2811448A1 (en) | GYROSCOPE FOR CONTROLLING A FLIGHT BODY MOVED BY AUTOROTATION | |
DE1939952A1 (en) | safety lock | |
DE2939711A1 (en) | Underwater detonator with increased safety and triggered acoustically - has triggering pin disabled by arming pin and by two devices actuated by water pressure | |
CH691557A5 (en) | Securing means of a projectile fuze. | |
DE2320628C3 (en) | ||
DE19534771C2 (en) | Electric bottle opener | |
DE2547413A1 (en) | SECURING DEVICE AGAINST THE UNINTENDED UNWINDING OF ROLLED TANKS FROM OPENING SURFACES, IN PARTICULAR ROLLING DOORS | |
DE443843C (en) | Mechanical ignition for artillery shells | |
DE1775724A1 (en) | Pressure medium control valve | |
DE2754640C2 (en) | Number switch for telecommunications equipment | |
DE1500366C (en) | Gear change transmission | |
DE2320628A1 (en) | STEPPER MOTOR |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19891207 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): FR GB IT SE |
|
17Q | First examination report despatched |
Effective date: 19910906 |
|
18W | Application withdrawn |
Withdrawal date: 19920215 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
R18W | Application withdrawn (corrected) |
Effective date: 19920215 |