FR2498998A1 - Cap for vehicle tank - contains ventilation passage with blocking piston to prevent spillage during accident - Google Patents
Cap for vehicle tank - contains ventilation passage with blocking piston to prevent spillage during accident Download PDFInfo
- Publication number
- FR2498998A1 FR2498998A1 FR8101777A FR8101777A FR2498998A1 FR 2498998 A1 FR2498998 A1 FR 2498998A1 FR 8101777 A FR8101777 A FR 8101777A FR 8101777 A FR8101777 A FR 8101777A FR 2498998 A1 FR2498998 A1 FR 2498998A1
- Authority
- FR
- France
- Prior art keywords
- piston
- cap
- ventilation passage
- channel
- circuit
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/04—Tank inlets
- B60K15/0406—Filler caps for fuel tanks
Abstract
Description
L'invention concerne un bouchon de réservoir pour véhicule automobile. The invention relates to a fuel tank cap for a motor vehicle.
On connaît un tel bouchon comportant un circuit labyrinthique mettant en communication l'intérieur du réservoir avec l'air libre afin que la pression reste constante à l'intE- rieur du réservoir pour éviter tout risque d'explosion ou d'implosion. Le circuit labyrinthique permet d'éviter le passage des gouttelettes de liquide mais n'est pas étanche dans les cas extrèmes prévus par les réglements, tels que le retournement du véhicule. Such a plug is known comprising a labyrinthine circuit bringing the interior of the tank into communication with the open air so that the pressure remains constant inside the tank to avoid any risk of explosion or implosion. The labyrinthine circuit avoids the passage of droplets of liquid but is not waterproof in the extreme cases provided for by the regulations, such as the overturning of the vehicle.
La présente invention vise donc à obtenir, avec un bouchon du type précédent, une sécurité contre la sortie du carburant liquide. Le bouchon selon l'invention permet également d'obtenir, par simple modification d'une pièce, un bouchon non ventilé utilisant les mêmes pièces qu'un bouchon ventilé, ce qui permet une fabrication plus économique. The present invention therefore aims to obtain, with a plug of the previous type, security against the exit of liquid fuel. The stopper according to the invention also makes it possible, by simple modification of a part, to have a non-ventilated stopper using the same parts as a ventilated stopper, which allows more economical manufacture.
A cet effet, le bouchon selon l'invention est caractérisé par le fait que les deux extrémités du circuit labyrinthique sont reliées par un canal dans lequel est logé un piston, une butée pour ledit piston étant ménagée à l'extrémité extérieure dudit circuit labyrinthique de manière que le circuit soit obturé lorsque le piston est en appui sur ladite butée. To this end, the plug according to the invention is characterized in that the two ends of the labyrinthine circuit are connected by a channel in which a piston is housed, a stop for said piston being provided at the outer end of said labyrinthic circuit of so that the circuit is closed when the piston is supported on said stop.
En cas de retournement du véhicule ou de jets de combustible contre le bouchon, le liquide repousse le piston contre la butée et le bouchon devient étanche. Si le piston a une longueur telle qu'il occupe la totalité du canal sans pouvoir coulisser, le bouchon est non ventilé. In the event of the vehicle overturning or fuel jets against the cap, the liquid pushes the piston against the stop and the cap becomes watertight. If the piston has a length such that it occupies the entire channel without being able to slide, the plug is not ventilated.
L'invention sera bien comprise à la lecture de la description suivante faite en se référant au dessin annexé dans lequel
- la figure 1 est une vue schématique en plan d'un circuit labyrinthique d'un bouchon selon un exemple de réalisation de l'invention, en position normale,
- la figure 2 est une vue d'un détail du circuit de la figure 1, en position de dépression dans le réservoir,
- la figure 3 est analogue à la figure 2, pour le cas d'un flux de combustible sur le bouchon,
- la figure 4 est une vue en coupe selon la ligne
IV-IV de la figure 2, et
- la figure 5 est analogue à la figure 4, mais pour une variante.The invention will be clearly understood on reading the following description made with reference to the accompanying drawing in which
FIG. 1 is a schematic plan view of a labyrinthine circuit of a plug according to an exemplary embodiment of the invention, in the normal position,
FIG. 2 is a view of a detail of the circuit of FIG. 1, in the vacuum position in the tank,
- Figure 3 is similar to Figure 2, for the case of a fuel flow on the cap,
- Figure 4 is a sectional view along the line
IV-IV of Figure 2, and
- Figure 5 is similar to Figure 4, but for a variant.
Le bouchon comporte, ménagé dans le corps 1, un circuit labyrinthique 2 dont une extrémité 3 débouche à l'intérieur du réservoir et l'autre extrémité 4 débouche à l'air libre. Un joint élastique 5 est plaqué sur le corps 1 pour fermer le circuit labyrinthique 2. The cap comprises, formed in the body 1, a labyrinthine circuit 2, one end 3 of which opens into the tank and the other end 4 of which opens into the open air. An elastic seal 5 is pressed against the body 1 to close the labyrinth circuit 2.
Conformément à l'invention, un canal 6 est ménagé entre les extrémités 3 et 4 du circuit labyrinthique 2 et un piston 7 est logé dans le canal 6. Un épaulement 8 est ménagé au raccordement du canal 6 avec l'extrémité 4 du circuit labyrinthique 2 de sorte que, quand le piston 7 est en butée sur l'épaulement 8, l'extrémité 4 est obturée (figure 3). Avant son raccordement à l'extrémité 3 du circuit 2, le canal 6 présente un épaulement 9 de sorte que, lorsque le piston 7 est en butée contre l'épaulement 9, le circuit labyrinthique 2 n'est pas obturé (figure 2). On a figuré en pointillés à la figure 2 un piston 7' de plus grande longueur qui occupe pratiquement la longueur du canal 6 entre les épaulements 8 et 9, de sorte que l'utilisation d'un piston 7' rend le bouchon non ventilé, sans autre modification. According to the invention, a channel 6 is formed between the ends 3 and 4 of the labyrinth circuit 2 and a piston 7 is housed in the channel 6. A shoulder 8 is provided at the connection of the channel 6 with the end 4 of the labyrinth circuit 2 so that, when the piston 7 is in abutment on the shoulder 8, the end 4 is closed (Figure 3). Before its connection to the end 3 of the circuit 2, the channel 6 has a shoulder 9 so that, when the piston 7 is in abutment against the shoulder 9, the labyrinth circuit 2 is not closed (Figure 2). There is shown in dotted lines in FIG. 2 a piston 7 ′ of greater length which occupies practically the length of the channel 6 between the shoulders 8 and 9, so that the use of a piston 7 ′ makes the plug not ventilated, without further modification.
Dans la forme de réalisation de la figure 4, le canal 6 est à section sensiblement rectangulaire. Le piston 7 à une section homothétique légèrement inférieure et est en contact avec le canal 6 par des nervures 10 à section triangulaire assurant un excellent glissement. Le piston 7 peut être en matière synthétique et, pour éviter le frottement contre le joint 5, une plaque métallique 11 est interposée. L'espace 12 laissé entre le piston 7 et le canal 6 est calculé pour être capillaire, de manière à interdire le passage de liquides. In the embodiment of Figure 4, the channel 6 is of substantially rectangular section. The piston 7 has a slightly lower homothetic section and is in contact with the channel 6 by ribs 10 of triangular section ensuring excellent sliding. The piston 7 can be made of synthetic material and, to avoid friction against the seal 5, a metal plate 11 is interposed. The space 12 left between the piston 7 and the channel 6 is calculated to be capillary, so as to prevent the passage of liquids.
Dans la forme de réalisation de la figure 5, le canal 6 et le piston 7 ont un bord arrondi 13,13' respectivement. In the embodiment of Figure 5, the channel 6 and the piston 7 have a rounded edge 13,13 'respectively.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8101777A FR2498998A1 (en) | 1981-01-30 | 1981-01-30 | Cap for vehicle tank - contains ventilation passage with blocking piston to prevent spillage during accident |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8101777A FR2498998A1 (en) | 1981-01-30 | 1981-01-30 | Cap for vehicle tank - contains ventilation passage with blocking piston to prevent spillage during accident |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2498998A1 true FR2498998A1 (en) | 1982-08-06 |
FR2498998B1 FR2498998B1 (en) | 1984-10-12 |
Family
ID=9254671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8101777A Granted FR2498998A1 (en) | 1981-01-30 | 1981-01-30 | Cap for vehicle tank - contains ventilation passage with blocking piston to prevent spillage during accident |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2498998A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8915234B2 (en) | 2010-10-25 | 2014-12-23 | Briggs & Stratton Corporation | Fuel cap |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1372506A (en) * | 1919-09-19 | 1921-03-22 | Abraham L Hartley | Valve for fuel-tank closure-plugs |
FR876852A (en) * | 1941-11-13 | 1942-11-19 | Device for closing the air intake opening of a fuel tank such as that of motor vehicles | |
FR2185196A5 (en) * | 1972-05-19 | 1973-12-28 | Larrieu Jean | |
FR2318794A1 (en) * | 1975-07-24 | 1977-02-18 | Neiman Diffusion | ANTI-THEFT PLUG FOR FUEL TANK |
FR2356855A2 (en) * | 1976-07-02 | 1978-01-27 | Neiman Diffusion | Cap for tanks of inflammable liq. - has flexible membrane fixed to periphery of internal collar |
-
1981
- 1981-01-30 FR FR8101777A patent/FR2498998A1/en active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1372506A (en) * | 1919-09-19 | 1921-03-22 | Abraham L Hartley | Valve for fuel-tank closure-plugs |
FR876852A (en) * | 1941-11-13 | 1942-11-19 | Device for closing the air intake opening of a fuel tank such as that of motor vehicles | |
FR2185196A5 (en) * | 1972-05-19 | 1973-12-28 | Larrieu Jean | |
FR2318794A1 (en) * | 1975-07-24 | 1977-02-18 | Neiman Diffusion | ANTI-THEFT PLUG FOR FUEL TANK |
FR2356855A2 (en) * | 1976-07-02 | 1978-01-27 | Neiman Diffusion | Cap for tanks of inflammable liq. - has flexible membrane fixed to periphery of internal collar |
Also Published As
Publication number | Publication date |
---|---|
FR2498998B1 (en) | 1984-10-12 |
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Legal Events
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TP | Transmission of property | ||
ST | Notification of lapse |