WO2015039882A1

WO2015039882A1 - Connection arrangement and method for producing a connection arrangement

Info

Publication number: WO2015039882A1
Application number: PCT/EP2014/068878
Authority: WO
Inventors: Daniel ALBIEZ
Original assignee: Global Safety Textiles Gmbh
Priority date: 2013-09-19
Filing date: 2014-09-04
Publication date: 2015-03-26
Also published as: DE102013015628A1

Abstract

Connection arrangement for connecting a connection mouth (2) of a textile airbag (4) to a connection (6) which has a substantially cylindrical outer lateral surface (8), wherein the connection (6) is inserted into the connection mouth (2), characterized in that a fabric bearing sleeve (7) with a substantially cylindrical inner wall (9) is arranged to bear on the outer circumference of the connection mouth (2) and at least one at least partially radially outwardly pressed sealing ring (13) is arranged to bear on the inner circumference (10) of the connection mouth (2) by a clamping mechanism (11) mounted on the connection (6), and method for producing such a connection arrangement.

Description

Connection arrangement and a method

for making a connection assembly

The present invention relates to a connection arrangement for connecting a connection mouth of a textile airbag with a connection, which has a substantially cylindrical outer circumferential surface, wherein the connection is inserted into the connection mouth, and a method for producing a connection arrangement.

There are a myriad of pneumatic connections for essentially hard connection partners in the market. Much lower is the number of compounds offered on the market for the so-called. Hard-soft transition, for example, for connection options with which z. As pneumatically contaminated textiles, usually air or gas bags (soft partner), in particular standardized pneumatic equipment (hard partner) can be connected. Such compounds are known, for example, from the production of side airbags, wherein in each case a hard cylindrical generator connection is inserted into the soft generator mouth of the textile side airbag and the textile generator is fastened with one or more hose clamps on the hard generator connection. In such compounds, which usually have to remain tight for a maximum of only about five seconds, a tightness in the long term is not an issue. For this reason, such connection arrangements for a durable and reliable operation, as it is when using permanent or alternately load, static or dynamic pressurized air or gas bags is required, unsuitable. The so-called horizontal leakage between the textile and the hard connection part is not economically controllable in all known from the prior art solutions. Quick couplings are known from the prior art, which are designed in such a way that they connect two or more lines in the form of pipes, hoses and / or consumers (tools, equipment, lifting devices, etc.) with each other. When using such couplings for mounting on textile components, they must be fixed with a fixing means, such as hose clamps or the like, in order to connect them to the textile component.

The disadvantage here is the so-called horizontal leakage between the textile and the coupling. Horizontal leakage means that there are (undesired) channels in the very narrow area of the tissue's tissue, through which gas can escape in the tissue plane to the end of the tissue and then out of the tissue or an airbag formed therefrom. For clarification: We are not talking about the permeability of a tissue, which is usually considered transversely to the tissue plane. The use of the above-mentioned hose clamps, which surround and wrap around a textile connection mouth which has been slipped onto a connection piece, presents a number of uncertainties and other disadvantages. Material and process-related scattering in the connection area of the textile component can lead to dimensional deviations with the result that the connection area does not correspond to the outer diameter of the coupling piece. An increased risk of wrinkles and thus leakage channel formation in the region of the connection mouth is the result. However, to reduce or avoid this disadvantage disadvantageous, a high expenditure of time and thus high cost in the assembly or disassembly of a coupling to the textile component. As a rule, the use of additional tools is required. When attaching the fixing means or the hose clamp on the outside in the connection region in the area surrounding the textile, it may be for mechanical damage of a fabric support, such. a laminate or coating, which in turn can lead to the formation of leaks along the fabric support. In addition, the use of fixatives, e.g. Hose clamps or clamps on the outside of the textile component often a voluminöser, expansive and disturbing construction of the construction.

It is an object of the invention to propose a connection arrangement for connecting a connection mouth of a textile gas bag with a connection and a method for producing such, which avoids the disadvantages known from the prior art or at least greatly reduced. The object is achieved with a connection arrangement according to claim 1, namely a connection arrangement for connecting a connection mouth of a textile airbag with a terminal which has a substantially cylindrical outer surface, wherein the terminal is inserted into the connection mouth, which is characterized in that At least one of a, attached to the terminal, clamping mechanism is at least partially radially outwardly pressed sealing ring is arranged adjacent to the outer circumference of the connection mouth a tissue conditioning sleeve with a substantially cylindrical inner wall. With the arrangement according to the invention can advantageously one, among other things also releasable, connection arrangement with almost complete reduction of the horizontal leakage in the connection area between the textile gas bag and the clutch, so reach the terminal. The seal pressing the textile surface transversely to its horizontal extent radially outwards against the tissue conditioning sleeve prevents the formation of leakage channels in the tissue plane in this area. For this purpose, advantageously no web technical adaptation of the textile connection region of the gas bag, that is the connection mouth is required. The sealing ring adapts to the inner diameter of the textile connection mouth. Nevertheless, a quick replacement (assembly / disassembly) of the coupling remains possible on the textile component, and this in a tool-free installation. When using the arrangement according to the invention is no use of other fixatives such. As hose clamps and the like. And thus no bulky and disturbing structure on the outside of the connection area necessary. In addition, damage to possible tissue conditions such as coatings, etc. by the use of fixatives, since they are omitted, can be avoided.

In an advantageous embodiment of the invention, the clamping mechanism has at least two mutually movable between the sealing ring compressing clamping surfaces. This embodiment of the invention allows - in contrast, for. B. to balloon seals - a simple non-positive and mechanically safe solution for reliable clamping of the sealing ring.

In a further advantageous embodiment of the invention, the clamping surfaces are conically shaped. With this advantageous variant, a fine adjustment can be realized for any desired clamping force conversion of a longitudinal component into a radial component. In yet another advantageous embodiment of the invention, the clamping surfaces are formed in the form of planar abutment shoulders. This design allows a straightforward direct movement of the abutment shoulders towards each other and readily allows the use of multiple sealing rings, possibly even with interposed spacer rings or sleeves.

In yet another advantageous embodiment of the invention, the clamping mechanism on a quick release locking mechanism, which z. B. is formed as a saw tooth ratchet mechanism. This variant is useful if the connection arrangement according to the invention is to be mounted and dismantled often and / or quickly, for example for measuring or test purposes.

In yet another advantageous embodiment of the invention, the clamping mechanism has a screw connection. This variant can be used especially when it comes to final connections.

In yet another advantageous embodiment of the invention, the tissue conditioning sleeve on its inner wall elastic pads or the tissue conditioning sleeve is coated elastically on its inner wall. This variant is of particular advantage when the textile material of the connection mouth is very thick. The elastic materials can also protrude in regions radially inwards and enter into a certain toothing with the sealing ring (s). It can hereby achieve an excellent "leakage barrier".

Of particular advantage is also a further advantageous embodiment of the invention, wherein the sealing ring is formed of silicone or silicone-like materials. This design has proven to be extremely reliable and long-term stable sealant.

The object is also achieved with a method for producing a connection arrangement according to the invention according to one of the variants discussed above, which is characterized in that the material of the connection mouth of the textile airbag is reversibly deformed between the at least one sealing ring and the tissue conditioning sleeve. Thus, a non-destructive connection of the connection mouth and connection is possible, which can also be solved again, with the advantage that both connection partners are suitable for further use. The dependent claims, the drawings and the description of further features and advantages of the invention can be found.

For a better understanding, the invention will be briefly described below with reference to exemplary embodiments with the aid of a drawing.

Fig. 1 shows a perspective view schematically a gas bag in a non-inflated state for use of a connection arrangement according to the invention.

Fig. 2 shows a perspective view schematically a connection mouth of the airbag of FIG. 1, wherein the connection mouth is shown open and a connection "just before insertion".

Fig. 3 shows schematically in partial cross section a first example of a connection arrangement according to the invention in a schematic diagram with a sealing ring.

Fig. 4 shows schematically in partial cross section a second example of a connection arrangement according to the invention in a schematic diagram with two sealing rings.

Fig. 5 shows schematically in partial cross-section a third example of a connection arrangement according to the invention with a sealing ring with integrated hollow screw / hollow-nut connection and lying transverse to the longitudinal axis abutment shoulders for the one sealing ring.

Fig. 6 shows schematically in partial cross section a further example of a connection arrangement according to the invention with conical clamping surfaces before mounting the connection.

Fig. 7 shows schematically the device according to Fig. 6 after mounting the terminal.

FIG. 8 shows a perspective view schematically of a connection mouth of the gas bag according to FIG. 1 and FIG. 2 with inserted connection and tissue attachment sleeve. 9 shows a top view (viewing direction according to arrow B from FIG. 8) of the situation according to FIG. 8.

Fig. 10 shows a perspective view schematically a gas bag with connection arrangement in connection with a supply line.

In the following explanations, the terms "airbag" and "airbag" are used side by side. However, they always have the same meaning. To simplify the description, elements having the same function bear the same reference numbers in part.

FIG. 1 shows a simple example of a non-inflated gas bag 4, which has two fabric layers O and U, between which an inflatable cavity H is located. The fabric layers O and U are connected to each other via seam areas 27. These seam regions 27 -in FIG. 1, for example, are encompassed by the circumferential line of the gas bag 4 and the dashed line parallel thereto-may consist of actually sewn seams or in the case of one-piece woven gas bags, so-called OPW (one-piece-woven). Airbags be woven seams. Optionally, the fabric layers O and U of the gas bag 4 are provided with a sealing layer, for example of silicone or other sealing materials, possibly laminated therewith. When used as intended, the gas bag is supplied and disposed of with a filling medium (not shown), such as air, gas or fluid, via a so-called connection orifice 2 and thus brought to expansion "into the third dimension" or back into its - as shown The connecting mouth 2 is formed by a lug 5 formed on the gas bag, which, like the gas bag 4, is lined by seam regions 27.

If one moves the seam areas 27 of the connecting mouth 2 towards each other, then the situation shown in FIG. 2 arises. The cavity of the connecting mouth 2 opens in an approximately oval or round shape and is thus ready to receive a ready in Fig. 2 on a common axis connector 6, which is to be moved in the direction of arrow A on the connection mouth 2 and inserted into this , According to the invention, the circumference 10 of the connection mouth 2 and also its diameter 110 of the connection 6 are slightly larger than the circumference 12 of the connection 2 and its diameter 12. Fig. 3 shows an inventive connection assembly 1 consisting of a tissue system sleeve 7, which in principle between itself and in the direction of arrows RD radially outwardly expanding sealing ring 13, the wall of a connection mouth 2 in the area K tightly clamped. The right and the left side of a two-part connector 6 press in the direction of arrows HD axially on the elastic sealing ring 13, which is thereby pressed in the radial direction outward to the tissue conditioning sleeve 7 and in this case the tissue of the connection mouth 2 clamped such that a Escape of air from the airbag (not shown here) is avoided "in the tissue plane." The actual gasket is therefore to be seen in the approximately annular region K. The reference M is intended to indicate the feed channel for a filling medium for the gas bag.

FIG. 4 shows a variant very similar to the design of the connection arrangement according to the invention according to FIG. 3, but here with two sealing rings 13, which are held at a distance by means of a spacer sleeve 28. This training works to increase the safety and reliability of the connection assembly according to the invention with a double seal.

Finally, FIG. 5 again shows a connection arrangement according to the invention, here again with a sealing ring 13, shown in section. The sealing ring 13 is formed with a connection consisting of hollow screw part 61 and hollow nut part 62, which lying transversely to the longitudinal axis abutment shoulders 61A and 62A for the one sealing ring 13, is formed. If the hollow screw part 61 and the hollow nut part 62 of the terminal rotated by a thread G to each other, then they press on the abutment shoulders 61 A and 62 A axially on the sealing ring 13 with the effect that it is deformed radially outward and the material of the connection mouth 2 against presses the tissue conditioning sleeve 7 and generates the desired seal at K. In Fig. 5 on the left side is symbolically marked with AR outer corrugation of the connecting part 61 indicated, which is optional anti-rotation of the connecting part 61 against the textile inner wall of the connecting mouth 2 to increase the gas bag.

6 and 7 show a connection arrangement according to the invention with connection parts 161 and 162 with conical clamping surfaces 15 and 16 for a sealing tube 113, which, when the connection is mounted by turning the connection parts 161 and 162 against each other via a thread G according to the invention, measure two sealing rings 1131 and 1132 forms. The sealing tube 113 is axially compressed during rotation over the conical clamping surfaces 15 and 16, in this case passes partially on the cylindrical outer surfaces of the connecting parts 161 and 162 and deviates as far as possible radially outward until it at its two axial ends radially to the inner wall of the connection mouth 2 passes and pushes them outward against the tissue conditioning sleeve 107. According to the invention, two sealing rings 1131 and 1132 and the corresponding clamps in the regions D result in the two regions D.

FIG. 7 shows schematically the device according to FIG. 6 after the mounting of the connection 160.

Finally, FIG. 8 shows a connecting region of an airbag 4 shown cut off from the gas bag 4, with a connection 6 inserted according to the invention in the connecting mouth 2 and a tissue conditioning sleeve 7. At the point of the connection 6 denoted by F - this applies analogously to all in FIG. 3 to 7 shown embodiments of the invention - are any known to the expert options (screw, clamp, bayonet locks, etc.) for connecting fittings for supplying the gas bag 4 with filling media such as air, gas or fluids from the field of pneumatics or hydraulics conceivable.

FIG. 9 shows the view resulting in the direction of arrow B from FIG. 8. The connection 6 can be seen centrally around which the connection mouth 2, which is drawn slightly spaced for reasons of better depictability, but in reality is shown in connection with the connection 2, is shown. To the connecting mouth 2 folded wings 51 and 52 of the flag are the outer circumference of the connection mouth 2 following flat on this. In order to show this by way of example, the right-hand wing in FIG. 6 is initially shown in the starting position 52 ^' , in which it lies in the plane of the non-inflated gas bag 4, with a somewhat thicker line. The wing is then "folded over" following the dashed approximately circular arrow S and placed in position 52 on the connecting mouth 2. The procedure guarantees wrinkle-free "supply" of the wings 51 and 52 so as not to jeopardize the tight connection arrangement 1 previously created according to the invention. The tissue conditioning sleeve 7 is also drawn slightly spaced for reasons of better representability, but is in reality at terminal 2 full and ensures the inventively created sealed connection assembly 1. The terminal 6 has in the middle a supply channel M for the filling medium for the gas bag 4.

Fig. 10 shows a gas bag 4 with connection arrangement 1 in connection with a supply line V, which leads to a (not shown) source for the filling medium.

Of course, the examples shown here are not drawn to scale. In order to clarify details in each case, relevant elements were sometimes extremely oversubscribed.

reference numeral

1 connection arrangement

2 connection mouth

4 airbag

5 flag

6 connection

7 tissue conditioning sleeve

8 lateral surface

9 inner wall

10 Inner circumference

11 clamping mechanism

12 circumference of the outer lateral surface

13 sealing ring

14 connection end

15 clamping surface

16 clamping surface

20 Elastic pad

22 locking mechanism

24 screw connection

27 seam area

28 spacer sleeve

51 wings

52 wings 52 'starting position

61 hollow screw part

62 Hollow nut part 61A contact shoulder 61 B contact shoulder

107 Tissue sleeve

110 inner diameter

112 outer diameter

113 sealing hose

161 connection part

162 connection part

1131 sealing ring

1132 sealing ring

A arrow

AR external corrugation

B arrow

D area

F fitting connection

G thread

H cavity

HD arrow

K clamping area

M feed channel

O upper fabric layer

RD arrow

S arrow

U lower fabric layer

V supply line

Claims

Patent claims

1. Connection arrangement for connecting a connection mouth (2) of a textile gas bag (4) to a connection (6), which has a substantially cylindrical outer lateral surface (8), the connection (6) being inserted into the connection mouth (2). is, characterized in that a tissue contact sleeve (7) with a substantially cylindrical inner wall (9) is arranged on the outer circumference of the connection mouth (2) and at least one of one on the inner circumference (10) of the connection mouth (2). Connection (6) attached, clamping mechanism (11) is arranged at least partially radially outwardly pressed sealing ring (13).

2. Connection arrangement according to claim 1, characterized in that the clamping mechanism (11) has at least two clamping surfaces (15, 16; 61A, 61 B) which can be moved towards one another and compress the sealing ring (13).

3. Connection arrangement according to claim 1 or 2, characterized in that the clamping surfaces (15, 16) are conically shaped.

4. Connection arrangement according to claim 1 or 2, characterized in that the clamping surfaces are formed in the form of flat contact shoulders (61 A, 61 B).

5. Connection arrangement according to claims 1 to 4, characterized in that the clamping mechanism (11) has a quickly releasable locking mechanism (22).

6 Connection arrangement according to claims 1 to 4, characterized in that the clamping mechanism (11) has a screw connection (24).

7. Connection arrangement according to one of claims 1 to 6, characterized in that the fabric contact sleeve (7) has elastic supports (20) on its inner wall (9), in particular is elastically coated.

8. Connection arrangement according to one of claims 1 to 7, characterized in that the sealing ring (13) is formed from silicone or silicone-like materials.

9. A method for producing a connection arrangement according to one of the preceding claims, characterized in that the material of the connection mouth (2) of the textile gas bag (4) is reversibly deformed between the at least one sealing ring (13) and the fabric contact sleeve (7).

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