Technical field
[0001] The present invention relates to a method as well as a device for applying a rust
protection liquid in the hollow spaces of a vehicle for the protection thereof.
[0002] The object of the present invention is to obtain a possibility to obtain a so called
protection treatment of a vehicle from a rust protection point of view in a simple
and rational way as well as simultaneously obtaining a possibility to obtain an after-market
treatment of the same vehicle with a rust protecting agent.
Background of the invention.
[0003] It is commonly known that very great values corrode away from our vehicles every
year and then particularly from our trucks and cars. One has tried to prevent this
by rust protecting the vehicles initially in the production stage, so called production
treatment, as well as rust protection treatments of the vehicles at certain time intervals,
1 to 2 years, when they have been in traffic or use, so called after-market treatment.
The rust protection treatment is thereby carried out as a spraying of a rust protection
agent using airless or air--mixed spraying. At airless spraying high pressures are
used (4 to 5 MPa) for the distribution of the rust protection agent while in the latter
case air is introduced to distribute the rust protection agent, wherebu a considerably
lower pressure can be used (0.5 to 1.5 MPa). Rust protection treatment is carried
of open surfaces such as of the chassis and the undersides of the wings, whereby thich,
often asphaltic based, high viscous rust protection agents are used, and if more closed
spaces such as beams, doors, and the like are to be treated thinner, more penetrating
rust protecting agents are used.
[0004] Rust protection treatment of the open surfaces is, as understandable, easy to carry
out using a simple, distributing nozzle, and the only thing one has to have in mind
is tokeep the surfaces to be treated to be kept dry and clean.
[0005] Rust protection treatment of the hollow spaces is, however, as understandable as
well, more difficult to carry out. When treating at the production stage spraying
is mainly carried out by means of rigidly applied nozzles. Hereby a great number of
nozzles (20 to 40 pcs.) having different designs of the input part and the support
part, which fits against the body. At the spraying the nozzle is fixed, i.e. is fixedly
held. The one carrying out the spraying has to change and select the right nozzle
from the collection of nozzles very often, connect the nozzle to a spraying gun, and
bring the nozzle into a hole or an opening of the hollow space intended herefore and
to move the nozzle to fixation, and to put the trigger. The nozzles are, however,
provided with a rapid connector, so that an exchange can be easily made. However,
the drawbacks are evident as the one carrying out the spraying continously has to
select and change nozzles. Further, the nozzles are deformed, and are worn out, and
have to be changed as soon as the spraying picture has changed.lvhen spraying has
been carried out the openings have been covered with a plastic or rubber disc, which
further increases the costs for the operation.
[0006] At the after-market treatment mobile nozzles are very often used, whereby the one
carrying out the spraying has 3 to 5 nozzles to make a selection among. The nozzles
have no fixing support either but are brought freely by hand in the spraying moment.
The method is apparently uncertain and is highly dependent on the sprayer's skill,
carefulness, and experience, i.a. of different types of cars. In many cars, further
openings are to be made according to the so called ML-method, which openings, together
with the prior, now uncovered ones, have to be reclosed by plastic or rubber discs.
[0007] Thus, one has requested that a simple and rational solution of these problems above
shall be given, particularly as the costs for the after-market treatments have increased
considerably, whereby the after-market treatments have been neglected causing increased
rust damages as a consequence
Description of the present invention.
[0008] It has now surprisingly been shown possible to eliminate the above given drawbacks
and problems by means of the present invention, whereby this is characterized in that
onc, preferably in the production stage, introduces in each so called insert opening
one spraying plug being adapted to each such opening and its space situated there
behind, whereby the spraying plug comprises one or more nozzles arranged to provide
a predetermined spraying picture, and comprises a female part being adapted to a spraying
gun for receiving such a gun, whereupon spraying is carried out, the spraying gun
is removed and the spraying plug is left in the opening.
[0009] Further characteristics are evident from the accompanying claims.
[0010] It is evident that a number of spraying plugs have to be produced for each car model
depending on the hollow spaces present behind. But the spraying plugs can be arranged
in an early stage of the production process and thereby rationalize this; the sprayer
need not select between different spraying nozzles but need only apply his spraying
gun, and pull the trigger thereof in a predetermined number of seconds for applying
a rust protection liquid; and need not apply any covering plastic or rubber disc.
[0011] At the after-market treatment a suitable spraying plug is already at hand and after
a simple mechanical cleansing of its female part the rust protection treatment can
be carried out.
[0012] It is also evident that in case no spraying plugs are present from the production
stage, these can be arranged afterwards and can then remain in place for further later
treatments.
[0013] In most cases the spraying plugs are manufactured of a plastic material, whereby
only air-mixed spraying should be used, as the plastic material otherwise should be
torn apart by the high spraying pressure used in airless spraying. The use of air-mixed
spraying causes on the other hand that the spraying equipment becomes more simple,
secure, and easier to handle, whereby a car owner may self buy an equipment, and carry
out his rust protection treatment of his vehicle.
[0014] As the nozzles of the spraying plugs are open a certain air circulation is obtainde
in very closed hollow spaces, which is a good thing as condensed moist or moist air
thereby can pass out.
[0015] From the enclosed drawing some different types of spraying plugs are evident. Thus
in Figs. 1 to 8 four different spraying plugs are shown seen from the side and from
beneath, Fig. 9 shows a hollow space in cross-section with an applied 2-way spraying
nozzle, and Fig. 10 shows a spraying plug with a spraying gun introduced therein.
[0016] In Figs. 1 to 2 a spraying plug having two diametrically, opposite to each other
arranged nozzles is shown, which plug is used in a longitudinal beam for obtaining
a longitudinal spraying. (Cf. Fig.9). The spraying plug thereby comprises on the one
hand a conical body 1, which in its front, more narrow end is closed. In the vicinity
of the front end two nozzles 2, and 3 are arranged, which are arranged diametrically
opposite to each other. The spraying plug is in its rear, more broad end, provided
with a collar 4, which is provided with a mark, not shown, showing the directions
of the nozzles. The collar 4 is connected to the conical part 1 via a hollow moulding
5, which facilitates the spraying plug to be fixedly snapped onto an insert opening.
The body 1 of the spraying plug is in its interior part provided with a conically
hole 7. Also in this case the opening 6 of the collar 4 can have a somewhat smaller
diameter than the opening diameter of the cone to provide for a locking of a tube
therein in connection with a spraying.
[0017] In Figs. 3 to 4 a spraying plug is shown having only one nozzle. Here the plug has
been given a deeper form in order to fit and act in a space intended therefor. The
female part is, however, the same.
[0018] In Figs. 5 to 6 a spraying plug having a 180
0-nozzle is shown, and in Figs. 7 to 8 a spraying plug having a nozzle opening in the
longitudinal direction of the plug is shown.
[0019] In Fig. 9 a spraying plug according to Figs. 1 to 2 is shown after having been introduced
in a beam 8, whereby the nozzles 2, 3 have been directed along the beam. To secure
a correct direction of the nozzles the spraying plug has been provided with a direction
mark on its collar 4.
[0020] It is shown in Fig. 10 on the one hand a spryaing gun 9; on the other hand a tube
10 connected to the front end of the spraying gun 9, as well as an insert nozzle 11
connected to the other end of the tube 10 and having a male part adapted to the spraying
plug.
[0021] It has been said above that the spraying plug is made out of a plastic material.
It can, however, be made out of any other material, which is suitable for the purpose,
such as certain metal alloys. One should bear in mind, however, to use such alloys
that corrode away, if a galvanic element occurs, to avoid corrosion of the vehicle.
[0022] In the case the spraying plug is to be used in a place where much dirt and moist
appears, a covering disc can be arranged above the female part.
1. A method for applying a rust protection liquid in a hollow space of a vehicle for
the corrosion protection of the latter, characterized in that one, preferably at the
production stage of the vehicle, introduces a spraying plug (1) into a so called insert
opening, said plug being adapted to each such opening, and its hollow space present
behind, whereby the plug comprises one or more nozzles (2,3) to give a predetermined
spraying picture, and comprises a female part (7) adapted to a spraying gun (9) to
receive said spraying gun (9), whereupon spraying is carried out, the spraying gun
is removed and the spraying plug is left in the insert opening.
2. A device for applying a rust protection liquid in a hollow space of a vehicle,
characterized in that it comprises a body (1) adapted to an insert opening of a hollow
space of a vehicle, one or more nozzles (2,3) arranged in said body (1), a space (7)
arranged in said body (1) to receive a spraying gun (9) or a part (11) thereof, and
a collar (4) arranged to said body(1) intended to keep said body in place.
3. A device according to claim 2, characterized in that the body (1) is connected
to the collar (4) via a hollow moulding (5) which provides for a locking of the body
(1) to the insert opening.
4. A device according to claim 2, characterized in that the collar (4) is provided
with an insert opening for receiving a spraying gun (9), whereby the opening has a
smaller diameter than the hollow space behind to provide a locking of a spraying gun
introduced therein.