DE102021111994A1 - Liquid container with a filler neck - Google Patents

Abstract

Liquid container with a filler neck for a motor vehicle, with a cover with a filling pot being arranged on the one hand on the filler neck and with the filler neck being able to be arranged on the other hand on the liquid container in which the liquid can be collected, with a ventilation channel with a ventilation hole being arranged on the filler neck, which fluidly connects an interior volume of the filler neck and the liquid container with ambient air. Due to the configuration of the liquid container according to the invention, simple and rapid filling with liquid is possible without liquid being blown out of the filling pot due to escaping air when the liquid container is being filled.

Description

The invention relates to a liquid container with a filler neck for a motor vehicle with the features from the preamble of patent claim 1, and a manufacturing method for the liquid container with a filler neck according to claim 13, and a motor vehicle with a liquid container with a filler neck according to patent claim 15.

For the technical environment, for example, refer to the German Offenlegungsschrift DE 10 2004 024 950 A1 pointed out. A liquid container for arrangement in a cavity of a body of a motor vehicle is known from this patent application, with at least one filling opening and at least one removal opening, with at least one ventilation opening additionally being provided in the upper area of the liquid container, in which a ventilation pipe is inserted, which is inserted into a liquid container protrudes. According to the invention, the filling opening is located below the ventilation pipe.

Next is the technical environment on the international patent application with the international publication number WO 03/039923 A1 pointed out. From this international patent application, a windshield wiper water container with a closure device and a filling nozzle is known. The filler neck arranged on the windshield wiper water reservoir is designed as a one-piece construction as a filler neck with an integrated ventilation duct. The ventilation channel in the filler neck is formed by pressing in the side surfaces in the upper third along a longitudinal line.

• - einen Rohrabschnitt zum Einleiten einer Flüssigkeit von einer Eintrittsöffnung zu einer Austrittsöffnung,
• - ein Entlüftungskanal zum gegenstromigen Durchleiten von Gas während des Einleitens von Flüssigkeit in den Rohrabschnitt von einer Gaseintrittsöffnung zu einer Gasaustrittsöffnung,
• - einen um die Eintrittsöffnung umlaufenden Deckelflansch,
• - wobei der Entlüftungskanal außerhalb des umlaufenden Deckelflansches außen am Rohrabschnitt angeordnet ist.

Next is from the German Offenlegungsschrift DE 10 2018 105 986 A1 , from which the present invention is based, a filling nozzle for filling a liquid container known comprising

• - a pipe section for introducing a liquid from an inlet opening to an outlet opening,
• - a ventilation channel for passing gas through it in countercurrent during the introduction of liquid into the pipe section from a gas inlet opening to a gas outlet opening,
• - a cover flange running around the inlet opening,
• - Wherein the ventilation channel is arranged outside of the peripheral cover flange on the outside of the pipe section.

Even if the known state of the art does not have any serious disadvantages, the present invention is based on the object of presenting a liquid container of the generic type with a filler neck, which can be produced without major changes to the production tool.

1. a) vorrichtungsmäßig durch die Merkmale im kennzeichnenden Teil des Patentanspruchs 1 dadurch gelöst, dass an den Einfüllstutzen ein Entlüftungskanal mit einer Entlüftungsbohrung angeordnet ist, die ein Innenvolumen des Einfüllstutzens und des Flüssigkeitsbehälters mit einer Umgebungsluft fluidisch verbindet, sowie
2. b) verfahrensmäßig durch ein Herstellverfahren mit den Merkmalen aus dem Patentanspruch 13 gelöst.

This task will

1. a) solved in terms of device by the features in the characterizing part of claim 1 in that a ventilation channel with a ventilation hole is arranged on the filler neck, which fluidically connects an inner volume of the filler neck and the liquid container with ambient air, and
2. b) solved in terms of process by a manufacturing process with the features of claim 13.

Advantageous developments of the invention are described in the respective dependent claims.

Due to the configuration of the liquid container according to the invention with a filler neck for a motor vehicle, it can be produced inexpensively without major changes to the production tool. The filling liquid is preferably windshield washer fluid, but it can also be any other type of filling liquid, such as e.g. B. act brake fluid.

Due to the configuration according to patent claim 2, that a partition is provided in the filler neck, which partitions off a first partial volume radially on the outside around the ventilation hole from a second partial volume of the filler neck, when the liquid container is being filled, the filling liquid is prevented from bubbling up due to air flowing back or escaping safely avoided from the liquid container. Both partial volumes form the entire interior volume of the filler neck.

The configuration according to patent claim 3, in which the partition wall extends geodetically downward over at least 60% of a height of the filler neck, effectively prevents the filling liquid from splashing back.

The configuration according to patent claim 4, in which the first volume is between 5% and 50% of the internal volume, has proven to be particularly advantageous in practical tests.

The configuration according to claim 5, that the partition wall rests linearly on the cover when installed, prevents unwanted leaks between the cover and the Partition through which the air could flow freely and reduce the effect of the invention.

The configuration according to patent claim 6, that a baffle is provided in the first volume, which connects an inner wall of the filler neck with the partition and extends upwards from the geodetic bottom of the filler neck by at least 60% of the height of the filler neck, prevents the liquid that has been filled in from escaping from the Liquid container can penetrate into the area of the ventilation channel and escape through it.

The configuration according to patent claim 7, that the filler neck and the partition wall are a first plastic component and the filling pot with the lid is a second plastic component, is a first exemplary embodiment and enables the partition wall to be integrated in the tool and thus in the component of the filler neck. Advantageously, neither a more complex tool nor an additional tool for the partition is necessary. This is therefore only to be welded to the cover and even this production step could be dispensed with if the dividing wall were pushed into a corresponding labyrinth-like enclosure of the cover when it was put on.

The configuration according to patent claim 8, that the filler neck is a first plastic component and the filling pot with the lid is a second plastic component and the partition wall is a third plastic component, is a second exemplary embodiment and enables simple manufacture and simple assembly of the liquid container with the filler neck.

Preferably, the filler neck and the cover and the dividing wall can be welded to one another in a linear manner on contact surfaces, which represents rapid and cost-effective production.

The fact that the welding according to patent claim 10 preferably takes place by means of friction or high-frequency or laser welding are particularly tried and also cost-effective manufacturing processes.

For the best possible positioning of the partition wall, a guide area for the partition wall is provided on at least one side on the inner wall of the filler neck and/or the cover.

In two particularly preferred embodiments, this guide area is either a raised area on which the dividing wall rests or a groove into which the dividing wall is inserted.

• - Bereitstellen des Einfüllstutzens mit der Trennwand, oder
• - Bereitstellen des Einfüllstutzens und Einbringen der Trennwand in den Einfüllstutzen,
• - Bereitstellen des Deckels mit dem Befülltopf,
• - Lagepositionieren des Deckels mit dem Befülltopf auf dem Einfüllstutzen,
• - Verschweißen des Deckels mit dem Befülltopf mit dem Einfüllstutzen und der Trennwand an den Anlageflächen,
• - Anordnen des Einfüllstutzens mit dem Deckel und dem Befülltopf an den Flüssigkeitsbehälter.

The liquid container with the filler neck for a motor vehicle according to claim 13 is preferably produced with the following method steps:

• - Providing the filler neck with the partition, or
• - Providing the filler neck and introducing the partition into the filler neck,
• - Providing the lid with the filling pot,
• - Positioning of the cover with the filling pot on the filler neck,
• - Welding the lid with the filling pot with the filler neck and the partition on the contact surfaces,
• - Arranging the filler neck with the lid and the filler pot on the liquid container.

According to patent claim 14, the welding preferably takes place by means of friction or high-frequency welding or laser welding.

In addition, a motor vehicle with a liquid container with a filler neck according to one of the preceding claims is claimed.

• 1 zeigt eine Aufsicht auf einen Flüssigkeitsbehälter gemäß dem Stand der Technik.
• 2 zeigt einen Schnitt durch den Flüssigkeitsbehälter gemäß dem Stand der Technik.
• 3 zeigt einen erfindungsgemäßen Flüssigkeitsbehälter in einer Seitenansicht.
• 4 zeigt einen erfindungsgemäßen Flüssigkeitsbehälter in einer Aufsicht.

The invention is explained briefly below using the prior art in two figures and according to the invention in two further figures.

• 1 shows a plan view of a liquid container according to the prior art.
• 2 shows a section through the liquid container according to the prior art.
• 3 shows a liquid container according to the invention in a side view.
• 4 shows a liquid container according to the invention in a top view.

The following apply in the 1 until 4 the same reference numerals for the same components.

1 shows a top view of a three-dimensional liquid container 1 with a filler neck 2 for a motor vehicle, according to the prior art.

The liquid container 1 is preferably a windshield washer fluid reservoir. However, the liquid container 1 can also be provided for other consumable liquids that are easy to refill. The liquid container 1 has a filler neck 2 on which, on the one hand, a filling pot 4 with a closure cap 10 is arranged. The filler neck 2 is inserted into the liquid container 1 on the other side of the filling pot 4 .

When the liquid container 1 is being filled, the closure cap 10 is opened and, for example, windshield washer fluid is poured into the filling pot 4 . Since air is displaced in the liquid container 1 during the filling process, for example with windscreen washer fluid, it flows back out of the filler neck 2 . This causes, for example, foaming in the filling liquid or the filling liquid bubbling back out of the liquid container 1 through the filler neck 2 and the filling pot 4 into the environment, which can be annoying for the filling person.

2 shows a section through the liquid container 1 from 1 . The liquid container 1 is again shown, into which the filler neck 2 is inserted with an inner volume 7 together with the filling pot 4 . The filler neck 2 is sealed off from the liquid container 1 by means of a peripheral, unnumbered O-ring seal. A stiffening measure between the filling pot 4 and the filler neck 2 is not shown with numbers, but in 1 clearly.

3 shows a side view of a liquid container 1 according to the invention with a filler neck 2 for a motor vehicle. As in the prior art, the liquid container 1 is preferably a liquid container 1 for a windshield washer system for the motor vehicle, which is not shown. On the one hand, a cover 3, which is in one piece with a filling pot 4, is arranged on the filler neck 2, the filler neck 2 on the other hand being able to be arranged on the liquid container 1, e.g. B. is plugged. The liquid container 1 is represented schematically by a square with a solid line. As in the prior art, the filling pot 4 can be opened and closed by means of a closure lid 10 .

When the liquid container 1 is being filled, the closure cover 10 is opened and liquid is poured into the filling pot 4 . This process of pouring the filling liquid is shown schematically by an arrow 11 from the filler neck 2 in the direction towards the liquid container 1 . A displaced air, which flows out of the liquid container 1 in the direction of the filling pot 4 , is shown schematically with a second arrow 12 . As can be seen, the liquid flows downwards, while the displaced air 12 is displaced or pressed upwards.

According to the invention, a ventilation channel 5 with a ventilation hole 6 is arranged on the filler neck 2, which fluidly connects an inner volume 7 of the filler neck 2 and the liquid container 1 with ambient air. The vent hole 6 is in 4 recognizable.

To separate the filling liquid that is filled in and the outflowing air, a partition wall 8 is provided in the filler neck 2, which partitions off a first partial volume 7a radially outward around the ventilation bore 6 from a second partial volume of the filler neck 7b. The entire internal volume of the filler neck 2 is numbered 7, and is numbered on the partition 8 for both partial volumes (7a, 7b).

The partition wall 8 extends at least 60% of a height of the filler neck 2 geodetically downwards. This means that the partition wall 8 bears against the cover 3 and extends downwards from this at least 60% of the height of the filler neck 2 .

The first partial volume 7a is preferably between 5% and 50% of the internal volume 7. Clean degassing during a filling process is ensured in this order of magnitude of the volume distribution. For good tightness between the first partial volume 7a and the second partial volume 7b, as already mentioned, the partition wall 8 rests linearly on the cover 3 in the installed state. This reliably prevents the air from escaping from the first partial volume 7a into the second partial volume 7b in an uncontrolled manner.

4 shows again the liquid container 1 according to the invention with a filler neck 2 for a motor vehicle in a top view. The lid is again numbered 10. In 4 the ventilation channel 5 and the ventilation hole 6 can be seen from above. Likewise, the partition wall 8 is indicated by a dot-dash line.

A baffle 9 is particularly preferably additionally provided in the first volume 7a, which connects an unnumbered inner wall of the filler neck 2 to the partition 8 and extends upwards from the geodetic bottom of the filler neck 2 by at least 60% of the height of the filler neck 2. This measure prevents the liquid present in the liquid container 1 from sloshing up when fresh liquid is poured in and getting into the area of the ventilation hole 6 and being able to escape through it.

The filler neck 2 and the partition wall 8 are particularly preferably a first plastic component and the filling pot 4 with the cover 2 is a second one plastic component. This means that the filler neck 2 and the partition 8 are in one piece. This enables the partition wall 8 to be integrated in a tool and thus in the component part of the filler neck 2 . Advantageously, neither a more complex tool nor an additional tool for the partition wall 8 is necessary. This is therefore only to be welded to the cover 2 and even this production step could be dispensed with if the partition 8 were pushed into a corresponding labyrinthine enclosure of the same when the cover 2 was placed on.

In a second embodiment, the filler neck 2 is a first plastic component and the filling pot 4 with the cover 2 is a second plastic component and the partition wall 8 is a third plastic component. As a result of this configuration, the filler neck 2 and the cover 3 and the partition wall 8 can be welded to one another in a linear manner at their contact surfaces. This can be done, for example, by means of friction or high-frequency or laser welding.

For easy assembly of the partition 8, the inner wall of the filler neck 2 and/or the cover 3 has a guide area for the partition 8 at least on one side. This guide area can be, for example, a raised area, a contact surface so to speak, or a groove into which the partition wall 8 is inserted.

• - Bereitstellen des Einfüllstutzens (2) mit der Trennwand (8), oder
• - Bereitstellen des Einfüllstutzens (2) und Einbringen der Trennwand (8) in den Einfüllstutzen (2),
• - Bereitstellen des Deckels (3) mit dem Befülltopf (4),
• - Lagepositionieren des Deckels (3) mit dem Befülltopf (4) auf dem Einfüllstutzen (2),
• - Verschweißen des Deckels (3) mit dem Befülltopf (4) mit dem Einfüllstutzen (2) und der Trennwand (8) an den Anlageflächen,
• - Anordnen des Einfüllstutzens (2) mit dem Deckel (3) und dem Befülltopf (4) an den Flüssigkeitsbehälter (1).

According to the invention, the liquid container 1 with the filler neck 2 for a motor vehicle can be manufactured in a manufacturing process with the following process steps:

• - Providing the filler neck (2) with the partition (8), or
• - Providing the filler neck (2) and introducing the partition (8) into the filler neck (2),
• - Providing the lid (3) with the filling pot (4),
• - position the cover (3) with the filling pot (4) on the filler neck (2),
• - Welding the cover (3) with the filling pot (4) with the filler neck (2) and the partition (8) on the contact surfaces,
• - Arrange the filler neck (2) with the cover (3) and the filler pot (4) on the liquid container (1).

The last method step of arranging can take place, for example, by plugging in, as is known from the prior art.

The welding is preferably carried out by means of friction or high-frequency or laser welding.

1. 1. Wirksame Entlüftung bei direkt gesteckten Einfüllstutzen 2, bei denen wegen dessen tiefer Lage ein Entlüftungskanal 5 am Flüssigkeitsbehälter 1 nicht realisierbar ist.
2. 2. Keine Mehraufwände an den Bauteilen (in Werkzeug- und Teileproduktion), da in herkömmlichen Werkzeugkonzepten integrierbar.
3. 3. Unveränderter Montageprozess.
4. 4. Werksbefüllung (nach der Fahrzeugproduktion) mit Standardbefülladaptern ohne eigene Entlüftung, mit erheblicher Ersparnis an Zeit.
5. 5. Verbesserter Kundennutzen beim Nachfüllen der Flüssigkeit, insbesondere einer Scheibenwischflüssigkeit, zur Reduzierung von Luftblasen und Schaumbildung aufgrund der Abfuhr der Luft durch die Einfüllöffnung.
6. 6. Im Fahrbetrieb keine Gefahr des Herausschwappens von Flüssigkeit, wie z. B. Scheibenwischflüssigkeit durch die offene Entlüftung am Befülltopf 4, da dessen Abflussstutzen sowohl quer zur Fahrtrichtung als auch quer zum Flüssigkeitsbehälter 1 orientiert ist.
7. 7. Entlüftung im Fahrzeug nicht sichtbar, versehentliche Befüllung in den Entlüftungskanal 5 ist nicht möglich.

This results in the following advantages for a liquid container 1 according to the invention with the filler neck 2 for a motor vehicle:

1. 1. Effective venting with directly plugged-in filler necks 2, where a venting channel 5 on the liquid container 1 cannot be realized because of its low position.
2. 2. No additional work on the components (in tool and part production) since they can be integrated into conventional tool concepts.
3. 3. Unchanged assembly process.
4. 4. Factory filling (after vehicle production) with standard filling adapters without their own venting, with considerable time savings.
5. 5. Improved customer benefit when refilling the liquid, in particular a windscreen wiper liquid, to reduce air bubbles and foam formation due to the air being discharged through the filling opening.
6. 6. When driving, there is no risk of liquid spilling out, e.g. B. windshield wiper fluid through the open vent on the filling pot 4, since its discharge nozzle is oriented both transversely to the direction of travel and transversely to the liquid container 1.
7. 7. Ventilation not visible in the vehicle, accidental filling into the ventilation duct 5 is not possible.

Reference List

1

liquid container

2

filler neck

3

lid

4

filling pot

5

ventilation channel

6

vent hole

7

internal volume

7a

first partial volume (radially outside around the vent hole)

7b

second partial volume of the filler neck

8th

partition wall

9

baffle

10

cap

11

liquid

12

Air

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 102004024950 A1 [0002]
• WO 03/039923 A1 [0003]
• DE 102018105986 A1 [0004]

Claims (15)

Liquid container (1) with a filler neck (2) for a motor vehicle, with a cover (3) with a filling pot (4) being arranged on the one hand on the filler neck (2) and with the filler neck (2) being able to be arranged on the other hand on the liquid container (1). in which a liquid can be collected, characterized in that a venting channel (5) with a venting hole (6) is arranged on the filler neck (2) and has an inner volume (7) of the filler neck (2) and the liquid container (1) fluidly connects with an ambient air. liquid container claim 1 , characterized in that in the filler neck (2) a partition (8) is provided, which seals off a first partial volume (7a) radially outwardly around the ventilation bore (6) from a second partial volume of the filler neck (7b). liquid container claim 2 , characterized in that the partition (8) extends geodetically downwards over at least 60% of a height of the filler neck (2). liquid container claim 2 or 3 , characterized in that the first partial volume (7a) is between 5% and 50% of the internal volume (7). Liquid container according to one of claims 2 until 4 , characterized in that the dividing wall (8) bears linearly on the cover (3) in the installed state. Liquid container according to one of claims 2 until 5 , characterized in that a baffle (9) is provided in the first volume (7a), which connects an inner wall of the filler neck (2) to the partition (8) and extends at least 60% of the height from geodetically below the filler neck (2). of the filler neck (2) extends upwards. Liquid container according to one of claims 2 until 6 , characterized in that the filler neck (2) and the partition (8) are a first plastic component and the filling pot (4) with the lid (3) is a second plastic component. Liquid container according to one of claims 2 until 6 , characterized in that the filler neck (2) is a first plastic component and the filling pot (4) with the lid (3) is a second plastic component and the partition (8) is a third plastic component. liquid container claim 7 or 8th , characterized in that the filler neck (2) and the cover (3) and the dividing wall (8) can be welded to one another linearly at their contact surfaces. liquid container claim 9 , characterized in that the welding takes place by means of friction or high-frequency or laser welding. Liquid container according to one of claims 2 until 10 , characterized in that on the inner wall of the filler neck (2) and / or the cover (3) at least one-sided guide area for the partition (8) is provided. liquid container claim 11 , characterized in that the guiding area is a raised area or a groove. Manufacturing method for a liquid container (1) with a filler neck (2) for a motor vehicle according to one of the aforementioned claims, characterized by the following method steps: - Providing the filler neck (2) with the partition (8), or - Providing the filler neck (2) and introducing the partition (8) into the filler neck (2), - Providing the lid (3) with the filling pot (4), - position the cover (3) with the filling pot (4) on the filler neck (2), - Welding the cover (3) with the filling pot (4) with the filler neck (2) and the partition (8) on the contact surfaces, - Arrange the filler neck (2) with the cover (3) and the filler pot (4) on the liquid container (1). manufacturing process Claim 13 , characterized in that the welding takes place by means of friction or high-frequency or laser welding. Motor vehicle with a liquid container (1) according to one of the preceding claims.

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