DE202009004056U1 - Coupling arrangement for connecting two fluid line components - Google Patents

Abstract

Coupling arrangement for connecting two fluid line components with a male and a female piece, which are arranged at the ends of the fluid line components and plugged into each other, and with a securing element that holds the father piece to the mother piece, characterized in that between the father piece and the nut piece (3) a sealing element (5) is arranged, which rests in the mounted state of the male piece (2) in the nut piece (3) on a contact shoulder (22) of the male piece (2).

Description

Technical area

The The invention relates to a coupling arrangement for connecting two Fluid line components with a father piece and a nut piece attached to arranged the ends of the fluid line components and into each other are designed pluggable, and with a securing element, the the father piece on the mother piece holds. A Such coupling arrangement is provided in particular for air ducts, but in principle can Also, other fluids are passed through the lines, with the Coupling arrangement can be connected.

State of the art

Two Cables can connected in different ways, for example over two at the ends of the lines arranged flanges, which together be screwed. Such a configuration of a coupling has the advantage of simple geometries, but is not for a one-hand assembly suitable. About that have to go out a variety of parts and components are interconnected, so that increased Assembly costs available.

Farther So-called quick release systems are present in which a Steel strap two Containing locking contours on the connection partners. To get a closed connection is only the bias of the steel bracket, wherein it can lead to false locks and leaks. Especially with elastic materials there is the danger that the steel bracket is disengaged can be brought with the locking contours.

task It is therefore an improved coupling arrangement of the present invention to provide that is simple and compact and one secure sealing in one possible One-hand assembly provides.

Disclosure of the invention

According to the invention this Task by a coupling arrangement with the features of the main claim solved. Advantageous embodiments and further developments of the invention are in the subclaims listed.

The inventive coupling arrangement for connecting two fluid line components with a father piece and a Mother piece, arranged at the ends of the fluid line components and into each other are designed pluggable, and with a securing element, the the father piece on the mother piece holds, sees before that between the father piece and the motherpiece a sealing element is arranged, which in the assembled state of the father piece in the mother piece abuts a contact shoulder of the father piece.

Prefers the sealing element is arranged on the front side of the nut piece, so that when inserting of the father piece in the mother piece is created on the shoulder of the father piece and ensures that produces a tight connection in the region of the coupling arrangement becomes. The father piece and / or the mother piece can formed on the respective line components in the original molding process or be arranged thereon, for example via a flange connection or by welding or sticking.

A Further development of the invention provides that the sealing element on the mother piece is molded so that it is not during transport and before the assembly can be lost. The arrangement of the sealing element is preferably such that it has a front projection in the mounted Condition covered. Alternatively to a one-piece design from mother piece and sealing element, it is provided that formed on the nut piece a paragraph is on which the separately manufactured sealing element is placed. The sealing element is at the paragraph, for example, by elastic Restoring forces or held by suitable holding devices on the paragraph. The separate Design of the sealing element allows easy adjustment changed Geometries, for example, if the father piece have a modified form should or if different fluids through the pipes and to be passed through the coupling assembly.

At the sealing element are advantageously at least two sealing lips provided, one of which rests on the fatherpiece and the other on the mother piece. The formation of the sealing lips is next to a high density the connection reduces the mounting force, since the individually to the Components adjacent sealing lips easily deform and to the male piece or the mother piece can be applied and pressed.

In a preferred embodiment invention, the abutment shoulder is designed as a bevel, with a round cross-sectional design, the abutment shoulder is then formed as a cone which widens away in the direction of the mother piece.

The securing element may be formed as a spring ring, which has effective positive locking elements in the axial direction, which engage in locking geometries both on the father piece and on the nut piece. The locking geometries are stable Formge exercises on the nut piece and the male piece, in which engages the fuse element in the mounted state. The securing element is preassembled on the nut piece, which may be produced in a blowing or spraying process, wherein the securing element preferably surrounds the sealing element in the preassembled state and optionally secures it to the nut piece. Due to the design of the securing element as a spring ring, a radial force component is provided, with which a secure fixing of the spring ring on the nut piece and the father piece can be ensured.

A Embodiment of the invention provides that the interlocking elements are designed as radially inwardly directed tabs, while the locking geometries as corresponding to the tabs recesses, in particular grooves, are formed. The grooves can be formed circumferentially, alternatively, the grooves or recesses only partially formed on the circumference, so that a rotation the spring ring or fuse element is guaranteed. By intervention the tabs in corresponding recesses can realize high pull-out forces without any risk of expansion of the father piece and the motherpiece the fuse releases and the clutch is lifted.

Of the Spring ring is preferred with an open cross-section with in Circumferential direction overlapping End equipped, with the overlap preferred takes place in a circumferential plane. In principle, however, it is also possible that an overlap takes place on different radial planes, so that's an end radially outside over the other lies. At the ends are circumferentially effective locking devices arranged or formed, which prevent it in the locked State, the fuse element widens so far that the father piece of the nut piece can solve. The locking devices ensure that the open Cross-section of the spring ring can not increase arbitrarily far, rather, the degree of expansion is limited or completely prevented. The locking devices are preferred as positive locking elements formed, for example, as heels, in the assembled state interlock and so a relative displacement of the two ends over a certain extent prevent.

In an embodiment of the invention, it is provided that the Ends of the fuse element in the unmounted state one Offset, in particular an axial offset from each other to order the locking devices are separated. This offset can either be through the original one Shaping the fuse element, for example by twisting or bending, or by appropriate means on the mother piece, for example, by grooves or receiving devices and spacers. The locking geometries are designed so that in the assembled State, the locking devices are guided together and secure the securing element against expansion. The offset can be overcome by an assembly force, if that male piece is introduced into the nut piece and the locking geometries lie to each other so that after locking the positive locking elements of the fuse element, the locking devices aligned with each other, so that the positive-locking elements interlock. Such an offset can be achieved, for example be achieved that the detent geometry on the nut piece an axial Game at one end of the spring ring allows, while the other end of the spring ring is fixed to effect a locking on the father piece in such a way that first one end of the spring ring ver is locked ver before the other end. Of the Offset can also be generated by leading an end ahead abuts an insertion bevel, for example about an axially projecting paragraph. The paragraph pushes an end to the back, so that later can engage in the locking geometry.

Around facilitate locking and a tool-free one-hand assembly to enable is at the fatherpiece preferably arranged in front of the detent geometry an insertion bevel on which the Can slide along positive locking elements of the spring ring, so that the spring ring expands and then in the locking geometry on the father piece into it snapped. The fatherpiece can relative to the mother piece be provided with an anti-rotation and an asymmetric Have a cross-sectional shape to a unique assignment of the components to effect each other in rotational orientation.

Brief description of the drawings

following Be exemplary embodiments of Invention with reference to the attached Figures explained in more detail. Same Reference numerals in different figures indicate like components. Show it:

1 a clutch assembly in an overall view;

2 a clutch assembly according to 1 in exploded view;

3 a sectional view through a coupling arrangement according to 1 ;

4 an enlarged detail representation ge Mäss 3 ; such as

5 a side view of a variant of the coupling arrangement with secondary locking.

Embodiment (s) the invention

In the 1 is a coupling arrangement in a perspective view 1 with a father piece 2 shown in a mother piece 3 is introduced. A spring steel ring 4 is as a fuse element both to the father piece 2 as well as the mother piece 3 placed around and engages with positive locking elements, which will be explained later, in locking geometries both on the father piece 2 as well as the mother piece 3 one. Between the father piece 2 and the motherpiece 3 is a sealing element 5 below the spring ring 4 arranged, which seals at the junction between the father piece 2 and the motherpiece 3 causes. The fatherpiece 2 and the motherpiece 3 can be formed of different materials, preferably they are made of plastic, for example in a blown process or in a spraying process. The fatherpiece 2 and the motherpiece 3 are arranged on further components, in particular on pipeline components or other fluid line components. In addition to a subsequent attachment of the Vaterstückes 2 or the mother piece 3 on the other components, these can also be integrally formed with each other.

In the 2 is an exploded view of the clutch assembly 1 shown. The mother piece 3 has locking geometries 31 in the form of a substantially circumferential groove. At the front end of the mother piece 3 frontally a paragraph is arranged, which will be explained later. On this paragraph, the sealing element 5 , which in the present case is designed as a sealing ring, on the nut piece 3 put on and held there. It finds in this respect a pre-assembly of the sealing element 5 on the mother piece 3 instead of. The spring ring 4 has an open cross-section and is slotted in the illustrated embodiment in the axial direction. At the periphery radially inwardly directed tabs are arranged, which will be explained later in more detail. The motherpiece 3 associated tabs engage in the locking geometry 31 on the mother piece 3 one, so the poetry ring 5 mostly from the spring washer 4 is surrounded. The father piece is then preassembled in such a way 2 in the mother piece 3 pushed in, taking on the father piece 2 an insertion bevel 22 is arranged, on which the positive-locking elements of the spring ring 4 slide along and the spring washer 4 can expand. At the end of the insertion bevel 22 is the locking geometry 21 formed in the shape of a groove into which the positive locking elements of the spring ring 4 engage positively. This state of full engagement is in the 1 shown.

In the 3 is the assembled state according to 1 shown in detail in a sectional view. The fatherpiece 2 is in the mother piece 3 introduced. The spring ring 4 is provided in the illustrated sectional area with a C-shaped cross-section and has a central web and two radially inwardly facing tabs 42 . 43 on, which form the interlocking elements. These tabs 42 . 43 lie on locking geometries 21 . 31 of the father piece 2 and the motherpiece 3 and lock the father piece 2 and the motherpiece 3 positively against a movement apart in the axial direction. At the fatherpiece 2 opposite side of the nut piece side positive locking element 43 is a paragraph 32 arranged, the axial displacement of the spring ring 4 prevented when inserting the father piece in the nut piece. Will be the fatherpiece 2 in the mother piece 3 inserted, the positive-locking element slides 42 or the tab 42 on the insertion slope 22 along, whereby in addition to a radial force component, an axial force component on the spring ring 4 acts. In order to cause only a widening in the radial direction or circumferential direction is at the paragraph 32 exerted a counterforce to the axial force, so that the spring ring 4 widens, without on the mother piece 3 to glide along.

At the front end of the nut piece 3 is a paragraph 35 formed, which extends in the axial direction. On this paragraph 35 is the sealing element 5 stored. When inserting the father piece comes in the assembled state of the sealing ring 5 at the contact shoulder 22 to lie, at the same time also the insertion bevel for the form-locking elements 42 forms, wherein the sealing, radially in nen lying end of the sealing element 5 a total of three sealing lips 51 . 52 . 53 having. The sealing element 5 lies with its sealing lips both on the mother piece 3 as well as the father piece 2 and prevents the passage of fluid can escape. The sealing element 5 is around the paragraph 35 at the same time forms a frontal closure and protection of the mother piece 3 ,

In the 4 an enlarged detail of the joint is shown. At the frontal heel 35 is a bead 34 formed, which faces radially outward to the sealing element 5 Secure against axial displacement to the front. The sealing element 5 gets over the bead 34 pushed away and then lies on the L-shaped paragraph 35 at. The bead 34 prevents the sealing element 5 slips axially forward before the spring washer 4 is mounted. After the spring ring 4 on the mother piece 3 was mounted, clamps the spring ring 4 the sealing element 5 in the area of the bead 34 firmly and additionally prevents slippage of the sealing element 5 ,

On the sealing element 5 are on the in mon Conditioned inner end of three sealing lips 51 . 52 . 53 formed, of which a sealing lip 51 on the mother piece 3 in a corner area, while two sealing lips 52 . 53 on the father piece 2 issue. A sealing lip 52 lies at the insertion slope 22 , at the same time a contact shoulder for the sealing element 5 is, on, the second sealing lip 53 lies at the foot of the insertion bevel 22 on the father piece 2 at.

A variant of the invention is in the 5 shown. In the 5 is a plan view of a mounted clutch assembly with a father piece 2 and a mother piece 3 shown. male piece 2 and mother piece 3 are inserted into each other and essentially correspond to those according to the 1 to 4 , The fuse element 5 in the form of a spring ring also has positive locking elements 42 . 43 on, which are not provided with a reference numeral for reasons of clarity. These engage in locking geometries 21 . 31 on the father piece 2 and the motherpiece 3 one. Unlike the embodiment according to the 1 and 2 is the spring ring 4 not slit in the axial direction, with a circumferentially extending clearance, but as an open cross-section with circumferentially overlapping ends 4a . 4b , The slot inside the spring washer 4 is essentially stepped in a diagonal manner, with each end 4a . 4b a paragraph 45 . 44 is formed, which are formed corresponding to each other.

In the illustrated embodiment are the ends 4a . 4b of the spring ring 4 on a radial diameter, leaving the ends 4a . 4b seen in the axial direction one behind the other. Between the front end 4b and the back end 4a is an offset 6 provided, which serves the front end 4b that is, the end that is the fatherpiece 2 facing, the rear end 4a ahead hurries. As a result, the positive locking element in the insertion direction snaps into place 42 first in the locking geometry 21 of the father piece. The back end 4a is when running onto the insertion bevel 22 or contact shoulder 22 First pressed slightly backwards, so that the offset 6 occurs in the axial direction. This is achieved by a corresponding embodiment of the latching geometry 31 allows on the mother piece. By the offset 6 It is possible that the locking devices 44 . 45 can move apart in the axial direction, causing the secondary latching, which prevents the fuse element 4 widening in the circumferential direction is canceled. This makes it possible for the ends 4a . 4b after the release of the lock by the correspondingly formed projections 44 . 45 can move apart in the circumferential direction, so that the spring ring on the insertion 22 can slide and the positive locking elements 42 in the locking geometry 21 at the father piece 2 can engage.

If both ends 4a . 4b with the associated positive locking elements 42 over the top of the inlet slope 22 pushed away and the interlocking elements 42 in the locking geometry 21 moved in on the father piece, the resilient metal ring closes 4 so the ends 4a . 4b are moved towards each other in the circumferential direction until the two projections 44 . 45 undercut and lock. The lock by a Axialbewe movement towards each other by the geometry of the positive locking elements 42 . 43 and the locking geometries 21 . 31 respectively. When assembled, the locking elements 44 . 45 positively locked. Be at an increased internal pressure, the two coupling partners, namely the father piece 2 and the motherpiece 3 Pressed radially outward, is by the locking devices 44 . 45 prevents the fuse element 4 widens in the circumferential direction, so that an opening of the securing element 4 effectively prevented and a locking of the clutch is ensured.

The Sekundärverrastung according to the embodiment of the 5 can also do without a seal 5 between the father piece 2 and the motherpiece 3 be used. The embodiment according to 5 without seal 5 is an independent solution to the problem of securing against unintentional opening and a false locking of the coupling components.

With the illustrated embodiments and the illustrated invention, it is possible to connect two fluid line components by means of a one-hand assembly. This assembly is done in the context of a simple blind assembly, which can be performed without visual inspection. The fatherpiece 2 simply gets into the preassembled mother piece 3 with the sealing element arranged thereon 5 and the spring washer 4 inserted as a fuse element. The connection is simple and compact and requires no axial or radial space a large construction. The compound can be realized in various materials and technologies, in addition to an embodiment of the components in plastic, these can also be made in metal. It is also possible to combine different materials. The safety device 5 ensures that high pull-out forces are necessary to separate the coupling elements from each other. A dummy latching fuse is provided by the secondary latch of the fuse element 4 through the locking devices 44 . 45 given. In addition to the described axial displacement of the ends 4a . 4b In principle, a radial displacement is conceivable and possible. In addition, a rotation of both the Sicherungsele mentes 4 relative to the mother piece 3 as well as to the father piece 2 by a corresponding embodiment of the locking geometries 21 . 31 to be provided.

The axial offset 6 can by the design of a corresponding locking geometry 31 or an upstream in the direction of the father piece contact nose on the securing element 4 be achieved, so that the rear end 4a is pressed back during assembly by the resistance of the mating contour, whereby a sliding past the locking devices 44 . 45 past each other to open the clutch is enabled. If the fuse element 4 after sliding over the insertion bevel 22 at the father piece 2 in the locking geometry 21 slides, becomes the back end 4a last in the Verrastungsnut 21 introduced, so that a false locking excluded who can. By merging the two ends 4a . 4b In addition, an acoustic feedback can be made as to whether a correct locking is present.

Claims (14)

Coupling arrangement for connecting two fluid line components with a male piece and a female piece, which are arranged at the ends of the fluid line components and plugged into each other, and with a securing element that holds the male piece to the mother piece, characterized in that between the father piece and the nut piece ( 3 ) a sealing element ( 5 ) is arranged in the mounted state of the father piece ( 2 ) in the mother piece ( 3 ) on a contact shoulder ( 22 ) of the father piece ( 2 ) is present. Coupling arrangement according to claim 1, characterized in that the sealing element ( 5 ) on the front side of the nut piece ( 3 ) is arranged. Coupling arrangement according to claim 1 or 2, characterized in that the sealing element ( 5 ) on the mother piece ( 3 ) is formed. Coupling arrangement according to claim 1 or 2, characterized in that on the nut piece ( 3 ) a paragraph ( 35 ) is formed, on which the sealing element ( 5 ) is attached. Coupling arrangement according to one of the preceding claims, characterized in that the sealing element ( 5 ) at least two sealing lips ( 51 . 52 . 53 ), one of which ( 52 ; 53 ) on the father piece ( 2 ) and the other one ( 51 ) on the mother piece ( 3 ) is present. Coupling arrangement according to one of the preceding claims, characterized in that the abutment shoulder ( 22 ) is formed as a slope, in particular as a cone. Coupling arrangement according to one of the preceding claims, characterized in that the securing element ( 4 ) is designed as a spring ring, the active in the axial direction positive locking elements ( 42 . 43 ), which in locking geometries ( 21 . 31 ) at the father piece ( 2 ) and mother piece ( 3 ) intervene. Coupling arrangement according to claim 7, characterized in that the positive-locking elements ( 42 . 43 ) as radially inwardly directed tabs and the locking geometries ( 21 . 31 ) are formed as corresponding to the tabs recesses, in particular grooves. Coupling arrangement according to claim 7 or 8, characterized in that the spring ring ( 4 ) an open cross section with circumferentially overlapping ends ( 4a . 4b ), on which circumferentially effective locking devices ( 44 . 45 ) are arranged or formed. Coupling arrangement according to claim 9, characterized in that the locking devices ( 44 . 45 ) are designed as positive locking elements. Coupling arrangement according to claim 10, characterized in that the positive-locking elements ( 44 . 45 ) are formed as in the assembled state interlocking paragraphs. Coupling arrangement according to one of claims 9 to 11, characterized in that the ends ( 4a . 4b ) in the unmounted state an offset ( 6 ), in particular axial offset from each other through which the locking devices ( 44 . 45 ) are separated and the locking geometries ( 21 . 31 ) are designed such that in the assembled state, the locking devices ( 44 . 45 ) are brought together. Coupling arrangement according to one of claims 7 to 12, characterized in that the latching geometry ( 31 ) on the mother piece ( 3 ) an axial play on one end ( 4a ) of the spring ring ( 4 ) allows. Coupling arrangement according to one of the preceding claims, characterized in that on the father piece ( 2 ) in front of the detent geometry ( 21 ) an insertion bevel ( 22 ) is arranged.