DE7221985U - Device for the non-stick connection of pipes made of plastic material - Google Patents

Description

SocietS dite TR ^ FIMETAUX, ° 8, rue de Madrid, Paris Berne

Device for the non-stick connection of pipes made of plastic

Material.

The present invention relates to a device for tack-free connection, in particular of pipeline elements, which take up a liquid under relatively high pressure should, as is the case with water pipes, for example.

In the case of pipelines, a device for tack-free connection has already been proposed, this connection so / ohl | is waterproof under pressure as well as without pressure. This device is characterized in that it has an introductory element has a simple cylindrical shape and a nut element,

which at its end with a ring-shaped seal made of rubber * schuk or an analogous material, this seal zv / egg has tongues that are located on the one hand on the inner part of the Support nut element and on the other hand on the outer part of the insertion element, the seal at the end of the nut element is attached by means of a lug which is held in place by a ring attached to the end of the nut element is firmly seated, the ring having a substantially planar part which is provided with an opening of a size which is only slightly larger than the outer diameter of the insertion element.

The present invention relates to such a device for connecting and is characterized in that the | Seal at the end of the nut element in an internal groove fesij is held, which is present in the mentioned ^ end, namely with the help of a ring which is fastened in said groove, the diameter of the ring opening being smaller than the inner j diameter of the part of the nut element, which is in the area j

i of the introductory element is located.

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In a special embodiment, the ring can be in the Kille be driven in ^ what for example with the help of a press can be done. But in a preferred embodiment the hanging is slotted, preferably with an inclined one Slot. Thus, the ring can simply be clamped in the slot and easily pulled out again, e.g. replace the seal.

The slot of the ring is preferably inclined, e.g. at 4-5 °, where these angle specifications refer to gins of the sbsnon Äingflächen is.

The ring preferably has a shoulder on its outer circumference which cooperates with the upper edge of the groove in which the ring is inserted. The lateral surface of the ring, \ which holds the seal may advantageously off: bevels be, with the corresponding face of the gasket is then also chamfered so that the cone is directed with its tip against the opening of the nut member of the connector, so that the pressure exerted by the liquid on the neck of the seal tightens the ring wedged in the groove.

The opening of the nut part of the connector can also be partially be beveled to be able to insert the ring easily, especially if it has to be hammered in.

A preferred embodiment of the invention has the Device in the form of a sleeve which has grooves provided at its two openings with a ring and a seal. Nevertheless, the invention can also be used as a nut part of a plug connection for any other connection «

The invention therefore makes it possible to produce a connection of lines in which the assembly and the axial sliding of the interconnected line elements is easily possible,

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whereby the sticking of the seal is secured in an excellent manner is, namely even at high pressures, as e.g. in the case of water pipes the Pail can be, whereby the bridge has the effect has that the ring in the Hill © by intermediate arrangement «; of Sealing approach is wedged, which through the rting in the Groove is held. Furthermore, the tightness is retained even in the event that there is little or no pressure, and av / ar both with regard to the passage of liquids as also of smells.

Whenever it is desired, it is also possible with the help of the invention Perform diameter reductions from the nut element to the insertion element.

The invention also allows a connection to be established which has a large radial deflection of the sin guide element in be bus? guaranteed on the Mutfcerelement. That's because of it possible that the inner surface of the nut element has a diameter which is sufficiently larger than the outer diameter of the insertion element and v / obei the inner diameter of the ring opening, in contrast, is only slightly larger than the outer diameter of the introductory part.

It is also possible to use nut elements, e.g. sleeves made of injection-molded To use plastic, v / obei the diameter of the end of the nut element is equal to or greater than the diameter of the Remainder of the inner surface of the nut element, which relative to the outer surface of the part of the insertion element in the Nut element is used, so that the nut element without danger of take-off can be established.

These features are in part also advantageous with respect to known sleeves for connecting pipelines that are in the Near one jediri end an internal groove to form a ring shaped seal, and v / if there is a need that the inner diameter of the opening is only slightly larger than

the outer diameter of the insertion element used, by to avoid that the seal does not come under pressure is driven. The remainder of the inner surface of the sleeve has a diameter that has a large radial or angular deflection of the insertion element in the socket. It is natural possible, in sleeves of a known type made of plastic material. To enlarge the diameter of the inner surface that is below the Groove is present. This can be done, for example, by editing

r ^ olgen. However, such Sine B _e processing is difficult and expensive, and has a loss of material and a large Committee result.

Further advantages and characteristic features of the invention result from the following description and the exemplary embodiment, however, which does not limit the invention. It shows in the drawings:

;. 1 shows a longitudinal section through a sleeve according to the invention with a tube inserted;

G. 2 the same cut, but with an angular deflection of the pipe;

3 shows an enlarged section through a Device according to a further embodiment of the invention;

Fie :. 4- a partial section through a ring of Fig. 3

Referring to the representations in FIGS. 1 and 2, the socket 10 of the invention, which is made of plastic material, for example PVC, is provided for connecting two pipes of pit oiohen diameter, one of which is provided with the reference number 2 ict to connect with each other. In known manner, s-3i; Huffc lie in the center of its inner surface .t a mnd 3, the ".i; isteckl ^'; nr: to limit e dor pipes in the sleeve.

i ^ft r 2τ> ϊο ^ η _υη τ is the diameter of the

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/ (Ο

Part 4 of the inner surface, which is closest to the center of the socket, is larger than the outer diameter of the pipe 2, and zv / ar by an amount e_, v / which defines the possible angular deflection of the pipe 2 in relation to the socket 1. This part 4- extends in the direction of the opening of the socket and after a decrease 5 by a second part of the inner surface 6, which has an even larger diameter and is attached to the groove? adjoins, which is arranged in the fi near the mouth 8, the inner diameter '' ■ is greater than the diameter of the part 6 and greater than the diameter of the part 4-. According to an advantageous feature of the invention, the inner part of the opening 8 is beveled at 9.

The tightness is ensured by an annular seal 10, one of the two lateral surfaces of which has two concentric flexible edges 11 and 12 on v / ei st. The edge 11 lies resiliently to part of the surface 6 of the sleeve, while the inner; Edge 12 rests on the pipe 2. ;

According to the invention, the seal 10 is fixed in its position! hold even though great pressure is exerted on the liquid will. This holding is done with the help of a ring 13, the Outer surface has a shoulder 14, which with dsm upper Edge of the inner groove 7 cooperates, which can be seen from the drawings. This ring can for example be made of plastic Material. ISr is using a press with power driven into the groove and clamped. The demarcation of the Opening 9 facilitates the introduction.

As can be seen particularly clearly from FIG. 2 , the ends of the tubes 2 can shift by an angle until part of their surfaces comes into contact with the surface 4, which then limits the shift. In contrast to this, the pipe 2 at the level of the rink 15 can not move radially at the level of the seal. The ring 13 thus serves as a tilting surface for the pipe 2. I.

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If the socket has the following dimensions:

Length of the tube used: 63 mm, diameter of the surface 4 165 mm, dimension e : 2.5 mm

the angular deflection with respect to the axis of the sleeve can be 3 ° 3O ^l , which means a total deflection of 7 ° in a diametrical plane.

It should be pointed out that the use of a seal 10 with two edges enables an additional machining advantage ^{to be} achieved in that the groove 7 can be produced without great precision. Even with the depth of the groove 7, precision is no longer required for attaching the ring 14. This is a significant advantage because of the difficulty in producing connecting parts from plastic meterial.

Due to the discovery it is possible that despite the large angular deflection the tightness is ensured without reducing the maximum operating pressure.

In Figures 5 and 4 is a particularly advantageous variant of the invention, the ring 13 being replaced by a ring 15 which also has a shoulder 14 and a beveled Margin 16 on v / ei st.

The ring 15 is slotted at 17, the slot being inclined by 40 ° with respect to a flat surface of the ring. o η η the riinc r.ich in his tap; » is, lines which Vo ^ de ~ was ⁴ on d ^ s Schiit / es 17 preferably adjoin one another v) r ϊ rf loi ^ Ht appreciated that di ^ shoulder 14 of the finger; due to the L _Q ichtir.}: eit, a * ^ n dorarti iUnrj nnζubringen may have dimensions that are much more important than the top | described Rinß · 13. This results in an effect under Druckeinwir- I still substantially improved fit '].

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The inner surface of the ring 15 may be conical advantageously by expanding in the direction of Söhe, namely by an angle ° <-, v / hich allows the axial WinkelausGchlag of the insertion element still to enlarge. The angle ° <- can be 3, for example.

The angle of inclination of the inner surface of the ring 15> Incidentally, the ring 15 can also be advantageously used in the Of the order of 17.

Although the invention is described with reference to a particular embodiment, it is characterized ise limited in any W and may include various modifications of the shape and material of iron with respect to v / without thereby departing from the scope of the Erfir & ungsgedankens.

Protection claims

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Claims (1)

Protection answer 1) Device for the adhesive-free connection of pipeline elements, v / obei an insertable element of simple cylindrical shape and a nut element are provided, which has an annular seal with two tongues at its end, which is located on the one hand on the inner part of the flutter element and on the other hand on the outer part of the Support insertable element, v / obei the seal is attached to the end of the nut element with ^ iIf e a lug, dex ^{1 is held} by a 2ing, which in turn is attached to the end of the nut element, the ring having an essentially flat surface, the is provided with an opening · whose dimensions are slightly larger than de- "outside diameter of the male element, characterized dadurc.i that the log tvng at the end of the nut member in an internally disposed groove of elides is held, with the aid of an in the groove attached ring, the opening diameter of which is smaller than the inner diameter he of the part of the nut element that is located in the area of the insertable element. 2) Device according to claim 1, characterized in that the ring is carried out for the purpose of undertaking slotted easy insertion and H _e " 3) Device according to claim 2, characterized in that the Slot of the ring in relation to a flat surface of the r ^ eneipjt is «, Vorxncbtnr ^ according to claim 1, daduroh p-ekennzen honors that the t ur'l is driven in with force ir di ^ liüle. 722198523.11.72 5) Device according to one of claims 1 to 4-, characterized in that that the surface of the ring which is in contact with the shoulder of the seal has a conical shape, wherein the tip of the fictitious cone is directed towards the opening of the end of the nut element. 6) Device according to one of claims 1 to 5, characterized in that that the ring has a shoulder which penetrates into the groove and is supported on the upper surface of the groove. 7) Device according to one of claims 4 · to 6 ,. characterized, that the ring for insertion into the end of the nut element has a chamfer on its periphery, which with a bevel at the end of the nut element cooperates. 8) Device according to one of claims 1 to 7, characterized in that that the part of the nut element on which the outer tongue of the seal is supported has a diameter, which is less than or equal to the diameter of the opening of the end of the nut element and greater than or equal to that Diameter of the remainder of the part of the nut el emonte-s is, which is located in the area of the insertable element. 9) Device according to one of claims 1 to 8, characterized in that that the wall in the opening of the ring has a slightly conical shape, the opening of the corresponding fictitious cone is directed towards the opening of the end of the nut element. 10) Device according to one of claims 1 to 9, characterized in that that represents, nut element on a sleeve for connecting consists of zv / ei Rohron. 11) Device according to one of claims 1 to 10, characterized in that 722198523.11.72 * * * fl It indicates that the sleeve is made of a plastic material is made by spraying. 12) Apparatus according to claim 11, characterized in that the groove or grooves are made by machining. _{according to B} |. 32 722198523.11.72