DE202005004686U1 - Clamp connector for the sealed connection of two pipe ends, has two clamping jaws that are tightened against each other and a sealing nipple with at least one end that is a form- or friction-fit in its corresponding clamp or pipe - Google Patents

Abstract

Clamp connector for sealed connection of two pipe ends (5) has two clamping jaws (1, 2) that are tightened against each other and in which the pipe ends are held. A sealing nipple (6) serves to seal off the pipe connection. It has at least one end that forms a form- or friction-fit in its corresponding clamping piece or pipe end.

Description

The The present invention relates to a clamping connector for sealing Connecting two pipe ends according to the preamble of claim 1.

such Clamping connectors are used, inter alia, in vehicle construction, where she for the operation of piping systems are used with which For example, air conditioners are operated.

there These piping systems consist of a large number of individual Tubes whose tube ends connected by the clamping devices become. The variety of individual tubes is therefore especially required, because the prevailing space in the engine compartment of motor vehicles so close are that piping systems from just one or a few Pipelines can not be mounted.

So The individual pipelines are not prefabricated to a pipeline system, but directly almost during dismounting built-in.

It Pipelines are known at the respective pipe end a jaw soldered so that the connection between the jaw and the pipe end gas and liquid tight is. To a gas and liquid density Connection between two jaws to be connected together To reach two pipes is in the jaws on the mutually facing sides a common nipple inserted in the jaws, the one with his outside Sealing surfaces in corresponding recesses of the two jaws rests and is squeezed by clamping with the recesses that a Gas or liquid tightness is reached.

This Clamping nipple consists of a separate part, for example has a convex outer surface, the the sealing surface forms.

at The respective sealing nipples must be installed in the pipes inserted into the jaws before screwing them together become.

This Inserting and holding the sealing nipple until the clamping takes place, is awkward and just under the described cramped space conditions very problematic, because the sealing nipple very easily fall out of the first jaw can before the second jaw is attached. A comparable Difficult handling also results in a clamp connector, in which the sealing nipple not in the jaws, but in the Pipe ends is used, at the wall he then sealingly.

In In any case, the assembly is difficult, with the resulting relatively high installation costs. This disadvantage is mainly because of that noteworthy because such clamp connectors as serial parts in large numbers be used.

Of the Invention is therefore based on the object, a clamp connector of the generic type continue to develop so that its assembly is simplified and the assembly costs are lowered.

These Problem is solved by a clamp connector, which has the features of the claim 1 has.

By The invention is the sealing nipple practically captive in one held the two parts to be joined together in every position. This means, the placement of the terminal connector or the jaw with connected pipe and plugged in sealing nipple is freely selectable without the danger is that the non-nipple falls out.

hereby not only results in easier assembly, but also one Assembly acceleration, which leads to a significant cost reduction leads.

To an advantageous embodiment of the invention is provided that the sealing nipple at least at one end with clamping legs is provided on the sealing surface abut the jaw or the inner wall of the pipe end.

there is the one by the circumference arranged clamping leg defined diameter before plugging in the jaw or the pipe end larger than the clear diameter one to the sealing surface the jaw adjoining hole, so that after insertion of the sealing nipple, the clamping legs under tension against the wall of this bore. The clamping force is determined by the restoring forces, the Inherent clamping legs, the sealing nipple total of a suitable material, preferably metal.

Of the As a rule, frictional engagement generated by this is sufficient to prevent the Sealing nipple safe for to keep the upcoming assembly work in its position.

It is also conceivable, however, to provide the sealing nipple, preferably in the region of the clamping legs with projections in corresponding Vertie engage the bore of the clamping jaw or the pipe end, so that in addition to the frictional engagement and a positive connection exists.

Basically the clamp connectors are already preassembled, that is, the Pipe is with its pipe end with the jaw, for example by soldering firmly connected. After that, the sealing nipple from the other side used the jaw ago. The thus created component jaw / pipe / sealing nipple can be brought to the place of assembly in this prefabricated form become. The advantage here is that a corresponding storage possible is, so that so far finished components removed according to the need can be.

advantageous Further developments of the invention are characterized in the subclaims.

One embodiment The invention will be described below with reference to the accompanying drawings.

It demonstrate:

1 a mounted clamp connector in a partially sectioned side view

2 a sealing nipple of the terminal connector in a side view as a detail

3 the sealing nipple in a front view

In the 1 is a clamp connector for sealingly connecting two pipe ends 5 shown, the two against each other by means of a screw 3 tight jaws 1 . 2 having. In these jaws 1 . 2 are the pipe ends 5 each of a pipeline 4 attached by material bond, for example by soldering.

For a gas- or liquid-tight transition from one pipeline 4 to the other, is between the two jaws 1 . 2 a sealing nipple 6 arranged, the spherically shaped sealing surfaces 7 which has adapted recesses 8th , which act as sealing surfaces, by the clamping force of the screw 3 are pressed.

Starting from the recesses 8th extends to the respective pipe end 5 in the jaw 1 . 2 a hole 9 , preferably a cylindrical, in the bore of the pipeline 4 empties.

According to the invention, the sealing nipple 6 with one end positive and / or frictionally engaged in the first jaw 1 established. For this purpose, the sealing nipple 6 at the one end elastic clamping legs 10 extending from the sealing surface 7 , extend in Längsachsrichtung and are evenly distributed over the circumference.

These clamping legs 10 are formed by slitting one onto the sealing surfaces 7 of the sealing nipple 6 subsequent pipe socket whose outer diameter is greater than the clear diameter of the bore prior to assembly 9 , so when inserting the sealing nipple 6 in the first jaw 1 the clamping legs 10 squeeze and friction by the restoring forces to the wall of the bore 9 be pressed.

As in particular from the 2 shows very clearly, the clamping legs 10 all around a bead 11 on, in a corresponding circumferential groove 12 the bore 9 rests, so that in addition to the existing friction and a form fit is given, the additional security against falling out of the sealing nipple 6 in the case that offers the two jaws 1 . 2 not yet connected. It is also conceivable that the sealing nipple 6 is held exclusively positively.

In place of such a bead 12 It is also possible to provide harpoon bars or similar forms by means of which the sealing nipple can be held 6 in the jaw 1 is improved. In addition, of course, other structural configurations are conceivable that produce a positive or frictional connection.

1

jaw

2

jaw

3

screw

4

pipeline

5

pipe end

6

sealing nipple

7

sealing surface

8th

sealing surface

9

drilling

10

clamping legs

11

bead

12

groove

Claims (7)

Clamping connector for sealingly connecting two pipe ends ( 5 ), with two clamping jaws ( 1 . 2 ), in which the pipe ends are held, and a sealing nipple ( 6 ), which with outside sealing surfaces ( 7 ) gas and liquid-tight at sealing surfaces ( 8th ) of the jaws ( 1 . 2 ) or on the inner walls of the two pipe ends ( 5 ) is applied, characterized in that the Sealing nipple ( 6 ) with at least one end positively and / or frictionally engaged in the associated clamping piece ( 1 . 2 ) or pipe end ( 5 ) is present. Clamping connector according to claim 1, characterized in that for the positive and / or frictional connection of the sealing nipple ( 6 ) is provided with clamping or friction elements, which adjoin the associated sealing surface ( 7 ) connect. Clamping connector according to claim 1 or 2, characterized in that the clamping elements of clamping legs ( 10 ) are formed, which extend in the longitudinal axis direction and the rubbing on the associated wall of the jaw ( 1 ) or the pipe end ( 5 ) is present. Clamping connector according to one of the preceding claims, characterized in that the clamping legs are formed by slots in a nozzle-shaped projection, wherein the clamping legs ( 10 ) are distributed over the circumference. Clamping connector according to one of the preceding claims, characterized in that the sealing nipple ( 6 ) in the region of its clamping legs ( 10 ) in its outer diameter, at least in regions, in the uninteged position is greater than the clear diameter of a bore ( 9 ) of the jaw ( 1 ) or the pipe end ( 5 ). Clamping connector according to one of the preceding claims, characterized in that the clamping legs ( 10 ) circumferentially with a bead ( 11 ) provided in a corresponding groove ( 12 ) of the bore ( 9 ) of the jaw ( 1 ) or the bore of the pipe end ( 5 ) rests positively. Clamping connector according to one of the preceding claims, characterized in that the clamping surface of the clamping legs ( 10 ) is provided with a friction coefficient increasing profiling or structuring.