DE7131549U - CLOSURE FOR CORRUGATED DRAIN PIPES - Google Patents

Description

Λ J 71.014

Closure for corrugated drainage pipes

The invention relates to a closure for corrugated drainage pipes.

There are sealing caps for corrugated drainage pipes known, which are pushed from the outside over the drainage pipe termination. These caps have a strap that corresponds to the outer diameter of the corrugated drainage pipe is equivalent to.

The main disadvantage of the known closure caps is the fact that they over the outer periphery of the Drainage pipes protrude. This is during transport or manual or mechanical laying of the drainage pipe given the risk that the cap can be pulled off. The undesirable consequence of a missing drainage pipe closure is the penetration and settling of dirt and other foreign parts inside the drainage pipe, whereby the effectiveness of the drainage cord is significantly impaired.

The innovation has set itself the task of circumventing these disadvantages and a closure for corrugated drainage pipe indicate where accidental stripping is impossible.

According to the hiring it is proposed that the closure plug-shaped as a blow-molded, injection-molded or deep-drawn part is formed closed on both sides or on one side and at least on its outer circumferential surface has two wart or claw-like elevations for locking engagement in the valleys of the corrugated drainage pipe.

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In another embodiment, the sealing plug can be designed without elevations with a smooth outer wall be. Such plugs are preferably used where there is an approximately exact setting between Plug and pipe inside diameter.

A stopper constructed in this way is no longer pushed over the drainage pipe closure from the outside, but rather pressed into the opening of the drainage pipe. The snap on the outer circumference of the stopper arranged wart-like or claw-like elevations in the valleys of the corrugated drainage pipe. At helical corrugated drainage pipes there is also the option of using the plugs screw the wart-like or claw-like elevations into the interior of the drainage pipe as guides. With smooth The surface of the stopper is linear over the circumference at the highest point of a wave trough at. In these cases one can speak of a kind of barrel fit of the plug in the drainage pipe.

Since the sealing pots are no longer in all cases protrude beyond the outer diameter of the drainage pipe, unintentional pulling off is excluded from the start « Removal of the stopper and thus opening of the drainage pipe cross-section can usually only be achieved in this way can be achieved that the short part of the drainage pipe in which the plug is inserted is cut off. This guarantees that unwanted and undesired removal of the sealing plug does not occur, whereby a later "effectiveness of the drainage pipe impairing pollution" is prevented.

To facilitate the introduction of the novel Closure plug in the drainage pipe can be useful be,

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that in the formation of a blown part in the hollow shape closed on both sides of the inner edge of the Cap is beveled while maintaining the wall thickness.

In the formation of the sealing plug as an injection molding or deep-drawn part in the version closed on one side, it appears advantageous that the side The circumferential surface runs conically outward from the bottom part. The bottom part can be used to facilitate the introduction of the stopper at the beginning of the conical Enlargement to be slightly smaller in diameter than the inside diameter of the drainage pipe. The conical enlargement that has a larger diameter on its outer edge than the inner diameter of the drainage pipe can then already cause a jamming of the plug inside the drainage pipe.

In addition to this initial impact, a preferred embodiment, the locking of by incisions on the lateral peripheral surfaces of the plug formed tongues are used, which are additionally bent outwards to achieve the locking effect and intervene in the valleys of the drainage pipe.

It has proven to be useful to offset the wart-like or claw-like elevations on the outer one by 180 To arrange the circumferential surface of the plug. In In special cases, a different graduation with several elevations can also be selected. Seems advantageous Furthermore, the wart-like elevations in the axial direction at a defined distance from one another on the peripheral surface to arrange the sealing plug. However, cases are also conceivable here in which this arrangement different, e.g. in a helical shape corresponding to the helical corrugations of the drainage pipe, is chosen.

In the drawing, exemplary embodiments of the innovation are shown schematically; show it:

Fig. 1 - a plug as a deep-drawn or

Injection molded part
Fig. 2 - a stopper as a blown part

In Fig. 1 is a deep-drawn or injected one-sided open plug (1) with the bottom part

(11) and the conically outwardly extending wall

(12). Tongues are formed on the outer edge (13) of the wall (12) by making parallel incisions have been generated, which are arranged offset to one another by 180 in the form shown and claw-like outwards are turned. In the case of injection-molded parts, elevations according to FIG. 2 can also be molded on.

Fig. 2 shows a blown closure plug (2) closed on both sides in the form of a hollow body. At the outer circumference are formed in the wall (22) wart-like elevations (23, 24), which 180 to each other offset and in the embodiment shown in the axial Direction are arranged one behind the other, Is area of the A bevel (21) is formed on the inner edge, but the wall thickness is retained unchanged.

The representations shown are merely exemplary embodiments and do not represent any restrictions on them Forms.

- SCB-utzansurücTie -

Claims (8)

PROTECTION CLAIMS 1. Closure for corrugated drainage pipes, characterized in that the closure stopper is designed as a blown, injection molded or drawn part closed on both sides or on one side and has at least two wart-like or claw-like surfaces on its outer circumference Has elevations to a locking engagement in the shafts of the drainage pipe « 2. Closure according to claim 1, characterized in that that the outer peripheral surface of the plug is smooth. 3. Closure according to claim 1 and 2, characterized in that in the formation as a blown part in the execution closed on both sides, the inner edge is beveled while maintaining the wall thickness. 4. A closure according to claim 1 and 2, characterized in that when formed as a deep-drawn part in the Version closed on one side, the lateral circumferential surface from the bottom part conically outwards runs. 5. Closure according to claim 4, characterized in that at the outer edge of the lateral circumferential surface perpendicular incisions running parallel to one another are arranged. 6. A closure according to claim 5, characterized in that the tongues formed by the incisions according to are bent on the outside. 7 ,. Closure according to * imeia or several of the το range— gangenea ÄBSj »rScihe, characterized in that the salt-like or claw-like elevations offset by 180 on the circumferential surface of the closure cap are arranged. 8. Closure according to claim 7, characterized in that that several varus- or claw-like elevations in arranged in the axial direction at a defined distance from one another on the circumferential surface of the closure cap are.