DE3040273A1 - Pneumatic passenger vehicle door emergency operation throttle - has valve allowing pressure increase via throttle hole and returning to initial position after pressure drop - Google Patents
Pneumatic passenger vehicle door emergency operation throttle - has valve allowing pressure increase via throttle hole and returning to initial position after pressure dropInfo
- Publication number
- DE3040273A1 DE3040273A1 DE19803040273 DE3040273A DE3040273A1 DE 3040273 A1 DE3040273 A1 DE 3040273A1 DE 19803040273 DE19803040273 DE 19803040273 DE 3040273 A DE3040273 A DE 3040273A DE 3040273 A1 DE3040273 A1 DE 3040273A1
- Authority
- DE
- Germany
- Prior art keywords
- valve
- pressure
- emergency
- throttle device
- compressed air
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/50—Power-operated mechanisms for wings using fluid-pressure actuators
Landscapes
- Safety Valves (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
Description
Bei der Erfindung handelt es sIch um eine Drosselvor-The invention is a throttle valve
richtung bei druckluftbetriebenen Fahrgasttüren, mit deren Hilfe ein ungedämpft es Auf- oder Zuschlagen der Tür bei Nothahnbetätigung nicht mehr auftreten kann.direction in the case of air-operated passenger doors, with the help of which a undamped, the door no longer opens or slams when the emergency valve is operated can.
Jeder Fahrgasttür in einem öffentlichen Verkehrsmittel ist ein sogenannter Nothahn zugeordnet. Solange sich der Nothahn in der Betriebsstellung befindet, erfolgt die Türsteuerung über das Türventil. Bei Umstellung des Nothahns auf Handbetrieb wird die Druckluftzufuhr abgesperrt und g1eichzeitig das Türventil mit dem angeschlossenen Türantrieb entlüftet. Die Türantriebszylinder sind drucklos, und die Tür läßt sich von Hand bewegen. Wenn jetzt der Nothahn wieder auf Betriebsstellung gebracht wlrd, kommt es zu einem schlagartigen, ungedämpften Schließen der Tür, da sich die vom Antriebskolben verdrängte Luft wegen der vorangegangenen Nothahnbetätigung bereits auf Atmosphärendruck entspannt hatte und somit nicht mehr zur Dämpfung beitragen kann. Diese ungedämpften Türbewegungen bedeuten nicht nur eine hohe Belastung für alle Türelemente, sondern können auch zu ersthaften Verletzungen führen.Every passenger door in public transport is a so-called one Assigned to emergency cock. As long as the emergency cock is in the operating position, takes place the door control via the door valve. When changing the emergency valve to manual mode the compressed air supply is shut off and at the same time the door valve with the connected Door drive vented. The door drive cylinders are depressurized and the door can be opened move by hand. If the emergency valve is now brought back to the operating position, if the door closes suddenly, undamped, because the from The drive piston already displaced air because of the previous emergency valve actuation had relaxed to atmospheric pressure and thus no longer contribute to the damping can. These undamped door movements not only mean a high load for all door elements, but can also lead to serious injuries.
Es sind nun sehr aufwendige Schaitungen mit mehreren elektrisch und pneumatisch verknüpften Ventilen bekannt geworden, mit deren Hilfe man nicht nur das Nothahn-Problem zu lösen, sondern auch noch weitere, nicht immer erforderliche Funktionen zu erfüllen versucht.There are now very complex circuits with several electrical and pneumatically linked valves have become known, with the help of which one not only to solve the emergency tap problem, but also others that are not always necessary Tries to fulfill functions.
Der Erfindung lag die Aufgabe zugrunde, mit einem vertretbaren Aufwand lediglich die bei der bisherigen othahnbetätigung auftretende Gefährdung zu beseitigen. Dies wEre schon relativ einfach zu erreichen, wenn man den Nothahn selbst mit einer Art Zwischenstellung versieht, in der die Druckluftzufuhr gedämpft erfolgt. Da jedoch ein plötzliches Umlegen des Nothahnsüber diese Zwischenstellung hinweg nicht ausgeschlossen werden kann, wäre eine befriedigende Sicherheit noch nicht gewährleistet.The invention was based on the object with a reasonable cost only to eliminate the hazard that has arisen from the previous actuation of the othole. This would be relatively easy to achieve if the emergency valve was operated with a Type intermediate position in which the Damped compressed air supply he follows. However, there was a sudden turning of the emergency valve over this intermediate position can not be ruled out, a satisfactory security would still be not guaranteed.
Im folgenden wird ein in der Zeichnung dargestelltes Ventil beschrieben, mit dessen Hilfe erfindungsgemäß bei jeder Art von Nothahnbetätigung eine Verletzungsgefahr ausgeschlossen werden kann. Wird der Nothahn auf Betriebsstellung gebracht, so gelangt die Druckluft zum Eingang (1).A valve shown in the drawing is described below, with the aid of which, according to the invention, there is a risk of injury with any type of emergency valve actuation can be excluded. If the emergency valve is brought to the operating position, it is achieved the compressed air to the inlet (1).
Die mit der Feder (2) belastete Membran (3) versperrt vorerst den Querschnitt (4),sodaß die Luft nur stark gedämpft über die Drosselbohrung (5) zum Ausgang (6) und über das Türventil zum Türantrieb gelangt. Sobald die Tür nach langsamer Bewegung ihre Endstellung erreicht hat, steigt der Druck unter der Membran (3) solange an, bis die Membran (3) abhebt und das Ventil auf Durchgang schaltet.The membrane (3) loaded with the spring (2) initially blocks the Cross-section (4), so that the air is only strongly damped through the throttle bore (5) to the Exit (6) and via the door valve to the door drive. As soon as the door after slower Movement has reached its end position, the pressure under the diaphragm (3) rises for as long until the diaphragm (3) lifts and the valve switches to passage.
Die weitere normale Türbetätigung über das Türventil wird also nicht mehr beeinflußt. Wenn der Nothahn wieder auf Handbetrieb umgelegt wird, so wird wegen der Druckabsenkung der Querschnitt (4) wieder verschlossen und die weitere Entlüftung des Türantriebs erfolgt über das Rückschlagventil (7).The further normal door operation via the door valve will not be more affected. If the emergency valve is switched back to manual mode, then because of the pressure drop, the cross-section (4) is closed again and the other The door drive is vented via the check valve (7).
Ohne dieses Rückschlagventil (7) würde ein vollständiges Entlüften über die Drosselbohrung (5) zu viel Zeit in Anspruch nehmen.Without this check valve (7) there would be complete venting Take too much time via the throttle bore (5).
In einem Nebenanspruch wird eine im Nothahn integrierte Drosselvorrichtung beschrieben, mit deren Hilfe sich bei Nothahnbetätlgung ebenfalls eine gedämpfte Türbewegung erreichen läßt. Eine Beschreibung, erübrigt sich, da die Funktion aus dem bereits Gesagten und dem Nebenanspruch selbst ersichtlich wird.In a secondary claim is a throttle device integrated in the emergency valve described, with the help of which a damped Can achieve door movement. A description is superfluous as the function is from what has already been said and the ancillary claim itself becomes apparent.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803040273 DE3040273A1 (en) | 1980-10-23 | 1980-10-23 | Pneumatic passenger vehicle door emergency operation throttle - has valve allowing pressure increase via throttle hole and returning to initial position after pressure drop |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803040273 DE3040273A1 (en) | 1980-10-23 | 1980-10-23 | Pneumatic passenger vehicle door emergency operation throttle - has valve allowing pressure increase via throttle hole and returning to initial position after pressure drop |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3040273A1 true DE3040273A1 (en) | 1982-06-03 |
DE3040273C2 DE3040273C2 (en) | 1988-06-09 |
Family
ID=6115157
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19803040273 Granted DE3040273A1 (en) | 1980-10-23 | 1980-10-23 | Pneumatic passenger vehicle door emergency operation throttle - has valve allowing pressure increase via throttle hole and returning to initial position after pressure drop |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3040273A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3104286A1 (en) * | 1981-02-07 | 1982-08-19 | Robert Bosch Gmbh, 7000 Stuttgart | Door-moving device |
DE3137530A1 (en) * | 1981-09-22 | 1983-04-07 | Robert Bosch Gmbh, 7000 Stuttgart | Door-actuating device |
EP0209725A1 (en) * | 1985-07-20 | 1987-01-28 | Robert Bosch Gmbh | Actuating device for pressure-operated, especially pneumatically operated vehicle doors |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2507349A1 (en) * | 1974-05-31 | 1975-12-11 | Ross Operating Valve Co | COMPRESSED AIR SYSTEM |
DE2912949A1 (en) * | 1979-03-31 | 1980-10-16 | Bosch Gmbh Robert | DOOR OPERATING DEVICE |
-
1980
- 1980-10-23 DE DE19803040273 patent/DE3040273A1/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2507349A1 (en) * | 1974-05-31 | 1975-12-11 | Ross Operating Valve Co | COMPRESSED AIR SYSTEM |
DE2912949A1 (en) * | 1979-03-31 | 1980-10-16 | Bosch Gmbh Robert | DOOR OPERATING DEVICE |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3104286A1 (en) * | 1981-02-07 | 1982-08-19 | Robert Bosch Gmbh, 7000 Stuttgart | Door-moving device |
DE3137530A1 (en) * | 1981-09-22 | 1983-04-07 | Robert Bosch Gmbh, 7000 Stuttgart | Door-actuating device |
EP0209725A1 (en) * | 1985-07-20 | 1987-01-28 | Robert Bosch Gmbh | Actuating device for pressure-operated, especially pneumatically operated vehicle doors |
Also Published As
Publication number | Publication date |
---|---|
DE3040273C2 (en) | 1988-06-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
8127 | New person/name/address of the applicant |
Owner name: ROBERT BOSCH GMBH, 7000 STUTTGART, DE |
|
8181 | Inventor (new situation) |
Free format text: STRANGFELD, RALF, 1000 BERLIN, DE |
|
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8320 | Willingness to grant licences declared (paragraph 23) | ||
8339 | Ceased/non-payment of the annual fee |