DE7531621U - CAVITY PROBE - Google Patents

Description

DR. J.'D. FRHR. From UEXKULL

DR.ULRICH GRAF STOLBERG DIPL.-INQ. JÜRGEN SUCHANTKE

Teroson GmbH (12609)

6900 Heidelberg 1

Hans-Bunte-Strasse 4 Hamburg, October 2, 1975

Cavity probe

The invention relates to a cavity probe for spraying or spraying of cavity coating compositions consisting of a flexible or rigid probe tube, one end of which with a spray nozzle and its other end with a feed part is provided.

Such cavity probes are used to line or coat cavities in motor vehicles and other machines used to prevent internal corrosion. Depending on the type of cross-section, which have a diameter of 20 to ίξ) 0 mm can have, depending on the type of the linear expansion straight or curved cavities and depending on the length of up to 2000 mm long Cavities can use rigid or flexible probes that are used either as a low pressure device or as a high pressure device will.

A serious disadvantage of these known devices is that the nozzle is not always free in the cavity and

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cannot deliver the coating compound evenly all round and unhindered. This is based on the fact that with rigid probes, especially if they are relatively long, the operating personnel carry the probe with them due to symptoms of fatigue the spray nozzle or for better guidance in contact with the inner wall of the cavity. With flexible probes the nozzle settles by its own weight or by tension to the wall of the cavity, which also affects the mostly conically exiting pointed jet, whereby an uneven coating is obtained. In many cases and especially when using a flexible one Probe collapses the spray fan completely and the nozzle drowns.

The invention has the task of eliminating these disadvantages and proposing a device with which you can both with flexible as well as rigid probe tubes a faultless one Cone jet and thus a uniform inner coating can be obtained.

To solve this problem, a cavity probe is used as described above characterized type proposed, which is characterized in that expanding members or spacers in the spray nozzle area are provided.

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Since the insertion openings are relatively small in order to avoid excessive weakening of the body panel should, it is advisable to use expansion members that are in contact with the probe tube when it is inserted and only are spread in the cavity even during operation and serve as spacers. To achieve this, the expansion links lie parallel to the probe tube in the idle state and can be spread apart from the other end of the probe tube via an actuating element be. In another case, the spreading members can be arranged and spread apart from the probe tube in the rest state Be able to be brought into a position parallel to the probe tube via an actuating element, namely when the probe tube is inserted into the cavity or withdrawn from it again. The actuator is in this second case only preferably arranged at the other end of the tube; it is also conceivable that the actuator is directly behind. the spreading members is arranged in the spray nozzle area. In such an embodiment, they are automatically spreading spreading members held together only when inserting or when pulling out the probe at the shortly before the Spreading members protruding from the opening actuating device forced back together.

It is particularly useful to .las actuating element as a the tube surrounding the probe tube and in particular as a plastic

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or to train rubber hose. The spreader members can be finger-like or disc-like parts made of any material. It is particularly useful when the expansion members off consist of several axially parallel strips of a plastic or rubber hose, which at their strip ends with the plastic or rubber hose are connected. Of course, the strip ends can also be combined in other ways be. The strip-shaped expansion members can through axially parallel incisions in the plastic or rubber hose have been obtained; this is particularly advantageous if this plastic or rubber hose is used as an actuating element at the same time.

Instead of expanding members, spacers can also be used in some cases in the form of a flexible plastic or rubber disc arranged radially to the probe tube in the spray nozzle area circular, star-shaped, or polygonal in outline can be used. These flexible discs can be due to their flexibility also due to the inlet openings that are not too small be introduced into the body.

In the following the invention will be explained in more detail with reference to drawings; show it:

Fig. 1 is a side view of a lumen probe;

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2A is a view of the spray nozzle area of the invention Lumen probe in a condition suitable for insertion;

FIG. 2B shows a view of the spray nozzle area analogous to FIG. 2A, but in the working position with spreading members;

3 shows an enlarged partial view of the spray nozzle area with the expansion element in the insertion position;

Fig. 4 is a side view of the front part of a lumen probe with a spacer;

Figures 5A and 5B show two front views of the lumen probe shown in Figure 4 with spacers of circular shape or star-shaped outline.

The cavity probe shown in Fig. 1 consists of a flexible probe tube 2 in the present case, one end of which with a spray nozzle 4 and the other end with a feed part, in the present case a spray gun 6 connected is. The probe tube 2 can be a metal tube in the case of rigid probes and a pressure-resistant plastic hose in the case of flexible probes which is used either bare for low-pressure devices or metal-wrapped in high-pressure devices. On the Probe tube 2 is slidable a plastic or rubber

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hose as actuating element 8 for the expansion members 10 intended.

As shown in Fig. 3, the front part of the as an actuator serving and pushed onto the probe tube 2 plastic or Gurami hose 8 from a fastening element, for example, a union nut 12 held and against moving secured. By axially parallel incisions 14 in the plastic or rubber hose 8 are axially parallel Strip-shaped expansion members 10 created, which when the plastic or rubber hose.es 8, for example by means of a cuff or a handle 16 at the other end of the plastic or rubber hose the position shown in Fig. 2A into the spread position be brought according to FIG. 2B, so that a star-shaped spacer results, which the spray nozzle 4 in sufficient Keeps a distance from the inner wall of the cavity and maintains a uniform Spray cone enables. For example, six incisions 14 with a length of 10 cm each result in six star-shaped Spreading elements with which a maximum distance of about 4 cm is achieved. A probe with spreading elements This dimension can also be used without difficulty in cavities with a clear diameter smaller than 8 cm because the expansion elements are sufficiently flexible and. Then lay firmly against the wall with rounding or bulging.

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The mode of operation with such a probe is extremely simple; after inserting the cavity probe into the cavity the plastic or rubber hose 8 at the end protruding from the cavity near the pistol grip 6 by about 10 cm pressed forward and preferably locked in this position, the strips 10 spreading and the desired

'Spacer result. After use, the is used as an actuating element serving tube 8 is withdrawn again, the strips serving as spreading element again being axially parallel place on the probe tube 2 so that the cavity probe can be pulled out of the cavity again. Appropriate is on the operating handle 16 is provided with a lock or a locking element.

In the arrangement shown in Fig. 4, a .Abstandshalter 22 is on any probe tube 20 in the form of a flexible Plastic or rubber washer is arranged, which is held by two holding elements 24 and 24 ', for example by two nuts will. The plastic or rubber washer may either have a star-shaped outline as shown in FIG. 5A or as shown in FIG. 5B shown having a circular outline; there are also polygonal or differently shaped, e.g. oval, spacers possible; the type of material and the outline will depend on the conditions of use and in particular on the The size of the insertion openings is determined.

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Claims (8)

t. £ »Q claims for protection 1. Cavity probe for spraying or spraying Cavity coating compounds consisting of a flexible or rigid probe tube, one end of which with a spray nozzle and the other end of which is provided with a feed part, characterized in that that spreading members or spacers are provided in the spray nozzle area. 2. Cavity probe according to claim 1, characterized in that that the spreading members are parallel to the Soruienrohr in the rest state and via an actuating element from the other end of the probe tube can be expanded. 3. Cavity probe according to claim 1, characterized in that the expansion members in the rest state from the probe tube Are arranged spread and an actuating element, which is preferably at the other end of the tube is arranged, can be brought into a position lying parallel to the probe tube. 4. cavity probe according to claim 1 to 3, characterized in that that the actuating element is a tube surrounding the probe tube. 5. Cavity probe according to claim 4, characterized in that the actuating element is a plastic or Rubber hose is. 7531621 01/28/76 . . ι ι i » 6. cavity probe according to claim 1 to 5, characterized in that that the Spreisglieder several axially parallel strips of plastic or rubber hose which are connected at their strip ends to the plastic or rubber hose. 7. Cavity probe according to claim 6, characterized in that the strip-shaped expansion members through axially parallel incisions are obtained in the plastic or rubber hose. 8. cavity probe according to claim 1, characterized in that that the spacer is arranged radially to the probe tube in the spray nozzle area flexible plastic or rubber washer with a circular, star-shaped or polygonal outline. ue: kö