Fluid sprinkling – spraying – and diffusing – Liquid sprayer for transparent panel
Reexamination Certificate
1999-08-16
2001-06-19
Scherbel, David A. (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Liquid sprayer for transparent panel
C239S587100, C239S587500, C239S587600
Reexamination Certificate
active
06247652
ABSTRACT:
FIELD OF THE INVENTION
The invention relates to a nozzle assembly provided for fastening in a motor vehicle and having a washing nozzle for a windshield washing system.
Washing nozzles fastened in such a nozzle assembly are often used in present-day motor vehicles for cleaning windshields or headlamp glasses and are therefore known. The nozzle assembly has, for example on its side facing away from the washing nozzle, a plurality of catch elements which are arranged on spring arms and engage behind the edge of a recess of a body part adjacent to the windshield to be cleaned. The nozzle assembly can thereby simply be pressed into the recess, until it is held securely by the catch elements.
A disadvantage of the known device is that the recess and the body panel have tolerances which make it impossible for the washing nozzle to be aligned exactly with the windshield to be cleaned. Also after deformation of the body part holding the nozzle assembly, for example due to an accident of the motor vehicle, an intended alignment of the washing nozzle with the windshield is no longer ensured. This is unacceptable, particularly in the case of windshield cleaning systems, in which the washing nozzles wash the windshield simply by spraying washing fluid onto it, without rewiping with a windshield wiper, since, in such cases, it is especially important to align the washing nozzle exactly for thorough cleaning of the windshield.
SUMMARY OF THE INVENTION
It is a object of the invention to provide a nozzle assembly of the initially mentioned type, in such a way that tolerances of the body parts adjacent to the windshield to be cleaned do not cause any misalignment of the washing nozzle.
This objective is solved, according to the invention, by means for adjusting the angle of inclination of the washing nozzle.
By virtue of this, the nozzle assembly according to the invention is first fastened in the motor vehicle. The washing nozzle can subsequently be oriented into its intended position in relation to the windshield to be cleaned. Tolerances of the nozzle assembly or of the body panel holding the nozzle assembly are thereby compensated simply by adjusting the angle of inclination of the washing nozzle.
The means for adjusting the angle of inclination of the washing nozzle could, for example, have a joint, by means of which the inclination of the washing nozzle in the nozzle assembly can be adjusted. However, according to an advantageous development of the invention, the means for adjusting the angle of inclination of the washing nozzle are of particularly simple development wherein the nozzle assembly is mounted pivotably in or opposite to the spraying direction of the washing nozzle and has an adjustable stop on the nozzle assembly side located opposite the pivotable mounting. The nozzle assembly, and consequently the washing nozzle, can thereby be pivoted by an adjustment of the stop.
According to another advantageous development of the invention, the outlay in terms of construction of the nozzle assembly is kept particularly low if the nozzle assembly is prestressed against the adjustable stop by means of a spring element. Furthermore, by virtue of this development, the nozzle assembly bears reliably with its stop on the body part.
According to another advantageous development of the invention, a nozzle assembly provided for fastening in a recess of a body panel of the motor vehicle can be produced particularly cost-effectively if the pivotable mounting is formed to engage in a forklike manner round one edge of the recess, and if the spring element has a projection bearing on the edge of the recess and prestressing the nozzle assembly against the pivotable mounting. Furthermore, the advantage of this development is that tolerances of the nozzle assembly or of the recess cannot lead to a loose fit or difficult mounting of the nozzle assembly in the recess.
According to another advantageous development of the invention, the nozzle assembly can be produced particularly cost-effectively if it is manufactured in one piece with the spring element and with a mounting for the adjustable stop.
According to another advantageous development of the invention, the angle of inclination of the washing nozzle can be adjusted particularly finely if the adjustable stop has an eccentric. Furthermore, the angle of inclination of the nozzle assembly is held reliably in its set position by self-locking of the eccentric.
According to another advantageous development of the invention, a lateral tilting of the nozzle assembly in the recess can be reliably avoided if the adjustable stop has two eccentrics arranged at a distance from one another.
According to another advantageous development of the invention, the eccentrics are mounted particularly simply if the two eccentrics are connected to one another by means of a shaft rotatably mounted in the nozzle assembly.
According to another advantageous development of the invention, the eccentrics can be fastened to the nozzle assembly in a simple way if the nozzle assembly has at least one bearing shell partially surrounding the shaft of the eccentric.
The body panels are often arranged at a lateral inclination relative to the windshield to be cleaned. This leads, particularly in the case of a fluidic nozzle with a striplike spraying region as a washing nozzle, to an inclined spraying region on the windshield. According to another advantageous development of the invention, an intended inclination of the spraying region on the windshield can be set particularly simply if the eccentrics are individually mounted on the nozzle assembly. The eccentrics can thereby be adjusted independently of one another, so that, in addition to the angle of inclination, the angle of rotation of the washing nozzle can also be set.
According to another advantageous development of the invention, the nozzle assembly is held permanently in its set position if the mounting of the eccentrics has a press fit. The eccentrics can thereby be adjusted only with relatively great effort.
According to another advantageous development of the invention, a basic setting of the angle of inclination of the nozzle assembly can be made in a simple way if the eccentrics or the shaft have a catching point. This is advantageous, particularly when the device according to the invention is produced as standard, since, thereby, the nozzle assembly, when being mounted, can be set particularly quickly into a position determined by the catching point. Only when a tolerance limit is exceeded or there is an unfavorable addition of the tolerances of the components is the angle of inclination of the washing nozzle reset.
According to another advantageous development of the invention, the angle of inclination of the washing nozzle can be set over a particularly wide range of adjustment, and fixed permanently in the set position, wherein the adjustable stop is setable by means of a screw. The substantially higher outlay in terms of construction due to such a screw, as compared with the eccentric, often does not lead to an increase in the manufacturing costs of the nozzle assembly, since the latter, because of its wide range of adjustment, is suitable for use in different types of motor vehicles with different dimensions.
REFERENCES:
patent: 1733521 (1929-10-01), Wuesthoff
patent: 2990980 (1961-07-01), Gronemeyer
patent: 5957385 (1999-09-01), Suhring et al.
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patent: 2677938 (1992-12-01), None
patent: 803093 (1958-10-01), None
Schlein Rolf-Dieter
Stange Rüdiger
Farber Martin A.
Mannesmann VDO AG
Nguyen Dinh Q.
Scherbel David A.
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