DE102009009990A1 - Conduit - / - Pipe quick connector - Google Patents

Abstract

Disclosed is a protective hose / - rohrverschraubung - especially a hose / pipe quick connector for electrical installation and equipment - especially for corrugated hoses / tubes, with a hollow cylindrical holder body for hose / pipe receiving in the axial direction and in a breakthrough or an annular groove of Haltekörperwandung mounted in the axial direction spring ring with function key. In addition to different national installation practices in the field of electrical building system technology and systems engineering, there are also different requirements for an electrical connection between two or more points of electrical power distribution, meaning requirements according to protection - humidity / water, dust, electromagnetic compatibility (EMC), Explosion protection (ATEX), chemical compatibility, or use - fixed or mobile installation. Accordingly, electrical connections by means of cables and cables - depending on the application - performed by protective tubes or hoses. Depending on the line or cable routing in a hose or a tube, fixed or movable, the degree of protection is conducted in accordance with the line or cable guide in the housing or through the wall by means of a hose or pipe fitting. Protective hose - / - pipe fittings can be equipped with quick-release closures - on the one hand for the quick connection of protective hoses or pipes of the line and ...

Description

The The invention relates to a protective hose - / - rohrverschraubung - in particular a hose / pipe quick connector for the electrical Installation and system technology - especially for World hoses / tubes, with a hollow cylindrical Holding body for hose / pipe receiving in the axial direction and one in a breakthrough or an annular groove of the Haltekörperwandung in the axial direction stored spring ring with function key.

Next different national installation practices in the area electrical building system technology and systems engineering There are also different requirements for an electrical Connection between two or more points of an electrical Energy distribution, meaning requirements according to protection class - humidity / water, Dust, electromagnetic compatibility (EMC), explosion protection (ATEX), chemical compatibility, or use solid or mobile installation. Accordingly, electrical connections by means of cables and cables - depending on the application - through Thermowells or hoses executed.

starts and / or ends the line / cable connection to a housing, a wall, o. Ä., Is a packaging for the housing entry or wall duct necessary. Depending on the line or cable routing in one Hose or a pipe, fixed or movable, the degree of protection according to the Cable or lead in the housing or through the wall by means of a hose or pipe fitting guided. For direct line or cable routing Cable glands are used without protective hose or tube.

• – der Installationsart – fest oder beweglich
• – der Leitungs- oder Kabelführung – Material und Ausführung
• – dem Gehäuse oder der Wandung
• – der Schutzart – Feuchte, Staub, EMV, ATEX – oder Chemiekalienverträglichkeit
• – der Schutzklasse – isoliert oder elektrisch leitend.

Hose / pipe fittings are commercially available, their embodiments are according to

• - the type of installation - fixed or movable
• - the cable or conduit - material and design
• - the housing or the wall
• - the degree of protection - humidity, dust, EMC, ATEX or chemical compatibility
• - the protection class - insulated or electrically conductive.

Conduit - / - pipe unions can be equipped with quick-release fasteners - on the one hand for quick connection of protective hoses or pipes of the cable management and on the other hand For quick installation at the location of the housing inlet or wall bushing. Quick-release closures and protective tubes / tubes are also often designed to work together and form a manufacturer-specific Modular system.

in the The following is the prior art of protective hose - / - pipe fittings - in particular of hose / pipe quick connectors for the electrical Acknowledged installation and system technology; according to the State of the art are - depending on the application - a Variety of types of protective hose - / - pipe fittings - in particular of hose / pipe quick connectors for the electrical Instalations- and plant technology in use.

The German patent DE 38 90 614 / international registration WO 1989/001 109 shows a corrugated pipe connector such that the cylindrical side wall of the hollow body in the region of the protective hose / - Rohraufnahme as locking means by a three-sided slit axially extending, by means of the fourth side elastically mounted, projecting into the hollow body barrier, in the form of a radial projection, arranged at the free, remote from the open end of the hollow body end portion. The lock can be arranged several times around the hollow body circumference. The / in the corrugated tube connector inserted to the stop protective tube / tube is locked by the latching lock; a removal of the hose / tube is only possible by loosening the lock by means of tools, even with multiple arrangement of the barrier over the circumference.

The German registration DE 690 04 194 / European patent specification EP 414 500 also shows a connector assembly, corresponding to the above application, of one or more barriers around the circumference of the hollow body receiving the protective tube (s).

Also In this application, the release of the lock / s is only with Help of a tool possible.

The European patent EP 1 586 800 "Apparatus and method for connecting a rigid pipe to a substantially flexible pipe" discloses the coupling of a hose / pipe quick connector with hose connection via the external thread of the same (otherwise for housing / wall mounting) with the internal thread of a hose / pipe fitting with the Transition to a rigid tube. The connection between rigid and flexible pipe is treated with at least one standard hose / pipe fitting.

The Swiss registration CH 699/82 / European registration EP 86 900 US Application US 4 542 922 discloses a hose / pipe quick connector such that the flat outer surface of the receiving nozzle has a wall recess with a securing tongue, which is articulated via a bending strip on the side facing away from the edge web end of Wandausnehmung fixed to the nozzle. The provided with inner transverse ribs securing tongue protrudes in its inoperative position acute angle out of the recess. When the corrugated tube is inserted, the tongue is pressed inwards, wherein a lip engages under the edge web at the free end of the tongue, while the transverse rib engages in circumferential grooves of the corrugated tube.

A Edge recess at the end of the tongue allows the attachment of a tool, without a disengagement of the tongue is no longer possible.

• – eine Kappe mit drehbarem Schnellverschluß,
• – ein Ring mit mindestens einer nach innen ragenden, mit der Profilierung des Schlauches/Rohrs in Eingriff bringbaren Lippe
• – sowie ein Dichtring

so über den/das Schlauch/Rohr gestülpt wurden, daß diese Konstellation durch eine Drehbewegung der über den Hohlkörper gestülpten Kappe am Hohlkörper befestigt und gedichtet ist; durch eine Drehbewegung in umgekehrter Richtung werden Hohlkörper und Kappe getrennt.According to the Austrian patent AT 1244/86 / European patent application EP 245,233 a hose / pipe quick connector is presented, consisting of a mountable in a housing or a wall hollow body in which the / the tube / tube can be introduced after the previously

• - a cap with swiveling quick release,
• - A ring with at least one inwardly projecting, with the profiling of the hose / tube engageable lip
• - And a sealing ring

so were placed over the / tube / tube that this constellation is fixed and sealed by a rotational movement of the inverted over the hollow body cap on the hollow body; by a rotary motion in the opposite direction hollow body and cap are separated.

If this arrangement has the required tensile strength and tightness, remains to be proved.

A series of patent applications for a family of protective tube / tube quick couplings, such as the German disclosure, are presented DE 10 2005 026 576 - Material properties, the German utility model DE 20 2005 020 702 - Hose receptacle, utility model DE 297 16 066 - Coupling, T-piece, utility model DE 297 14 542 - non-detachable connection, German utility model DE G 90 07 056 / German patent specification DE 40 20 171 / European patent specification EP 465 896 - detachable connection, in which essentially a "connecting element for corrugated pipes and hoses" is presented with various forms. The connecting element consists essentially of an approximately cylindrical housing with a connecting piece and in the housing wall a plurality of window-like openings and an attachable to the housing support ring with a frontal annular surface and with legs and locking claws at the free ends. Overall, the number of parts for the sealed quick-fitting is quite high.

The German patent DE 10 2004 017 293 / European registration EP 1 735 558 / international registration WO 2005/108 847 introduces a "coupling for corrugated pipes" on the one hand from an elastic sleeve for receiving corrugated pipe or winding tube and on the other hand passes into a non-elastic connector with window openings and locking claws for receiving mainly metal corrugated pipes.

through The locking claws held corrugated pipes are no longer without Tool separable.

The utility model DE 299 16 743 / German patent DE 199 45 751 / European registration EP 1 121 554 discloses a quick release fastener for corrugated tubes in which the corrugated tube is held in a tubular sleeve via two opposing cut-free locking sleeves and a locking sleeve is part of a sleeve portion which can be radially folded out by means of a film hinge.

These Solution applies to pipes with large ones Pipe diameters in which no tightness is required.

With the German disclosure DE 10 2006 045 639 and DE 10 2005 030 457 Coupling systems for hoses and pipes are presented in which the hose / pipe end for the coupling receptacle must be assembled.

With the utility model DE G 94 00 905 a Steckschnellkupplungs device is presented in particular for corrugated hoses / pipes, consisting of a cylindrical hollow body - for receiving the hose / tube - with one or more window openings, each having an elastic, deformable towards the axis latch unit, which introduced the tube / pipe latching against withdrawal secures. The removal of the tube / tube is carried out with a hollow cylindrical slotted auxiliary tool, which slipped over the / hose / tube, pushed between the clutch inner wall and hose / tube resets the detent, and can be removed with the hose / tube of the coupling.

utility Models DE 299 11 362 presents an angled "connector for attaching elongate bodies" in which the tube / tube is inserted into a half-shell and locked.

The Removal of the hose / pipe can only be done with a tool.

Utility Model DE 200 11 757 / Application Publication DE 100 32 926 would like to improve the holding forces of quick couplings in hoses / pipes achieved in that in the hollow cylindrical holder body mounted in an axial direction in an inner annular groove retaining ring is arranged, which is elastically expandable in the radial direction for receiving the hose / tube and locked against it / seals. The retaining ring made of plastic or metal is interrupted at its periphery by a slot; when expanding it widens the slot.

The Solution of the hose / pipe can only be done with one tool or an adapter; for this purpose it is proposed the release tool as a cover-like conclusion of the Stamp out holding body. The functionality The device according to the principle of sliding sleeve sets targeted selection the materials, their frictional forces and their angular position ahead and places high demands on the quality to be maintained tolerances.

utility Models DE 89 16 242 / Patent DE 39 03 353 discloses a "connection fitting for circumferentially ribbed pipes or hoses" consisting of a hollow cylindrical body, but for the hose / pipe lock only one in the cylinder surface cut spring tongue - radially mounted, axially extended - has enough solid support for a corrugated hose - depending on the configuration of the retaining tongue also different sized occurring axial forces can be considered.

at Presence of only one retaining tongue makes the hose / pipe disassembly easier; however, a release tool is also required here.

In another connection fitting, German patent application DE 39 03 355 Also, a hollow-cylindrical body receives the hose / tube and a sufficiently long surface-cut spring tongue with its protrusion pointing inside the body and the slit-shaped boundaries of its longitudinal sides extend approximately in the circumferential direction of the body / space diagonal to the body. Advantageously, the arrangement has an effect on the short axial length of the fitting, the fitting is shorter; Auxiliary tool is required for unlocking and removing the hose / pipe.

The European application EP 857 275 describes a two-part protective hose / tube quick connector consisting of a cup-shaped fitting, the hollow cylindrical body has radially distributed, axially extending apertures and an engagement opening, and which is suitable, with a radially distributed and axially extending pressure fingers - according to the above breakthroughs provided a sliding sleeve forming clamping ring and the / the hose / tube record. The clamping ring sits in the assembled state axially displaceable in the connecting piece; the pressure fingers have in the openings radial play. The locking and unlocking of the tube / tube by means of radially, in the engagement opening attached screwdriver by displacement in the axial direction. Accidental opening of the screw - as by vibration, impact or pressure - is thereby prevented, as well as by external influences, such as sabotage or vandalism.

The utility model DE G 86 24 802 shows a hose connection for corrugated hoses / pipes, consisting of a fitting with hose / tube receiving sleeve. The axial extension of the wall of the receiving sleeve form radially pivotable tongues, provided with in the hose / pipe surface cross-locking and these locking ribs. A displaceable in the axial direction circlip engages and locked in the closed position the tongues.

The Tightness on the one hand to the housing or the wall by means of sealing ring and on the other hand to the hose / tube by means of a sealed annular groove of the receiving sleeve made.

The German patent DE 41 39 825 discloses a protective hose / tube quick-fitting such that the fitting has a double-walled hollow cylindrical hose / tube receiving - possibly also sealed - and that the outer cylindrical surface at least two radially inwardly projecting, resilient engaging in the troughs of the hose / tube Locking lugs identifies, which are to border the receptacle and parallel to this, stored. The wall thicknesses of the outer cylinder have an elliptical cross-section such that thin walls prevail at the level of the opposing locking lugs and that compression of the wall in this area allows the latching noses to come out of the hose / pipe. The degree of tightness must be determined by measurement.

The publication DE 101 52 331 provides a protective hose - / - tube quick-fitting in the form of a cylindrical sleeve with integrally formed, spreadable in the radial direction first clamping tongues which engage in troughs of the hose / tube. Sleeve base and hose / pipe enter a plug connection. By manually pressing the clamp tongues on the trigger tubes, the hose (s) can be like to be solved. The sleeve has at its end facing away from the hose / tube in the sleeve radial direction inwardly deflectable second clamp tongues with outwardly facing locking lugs for locking into an opening in a wall.

The Tightness must be determined for the degree of protection.

utility Models DE G 93 09 773 deals with a "quick coupling for hoses", consisting of a fitting with a hollow cylindrical hose / pipe receiving and an actuator with at least one locking body, which is operatively connectable between an operative operating position in which the locking body with the hose / tube, and one / Hose / tube releasing operating position is adjustable, wherein in the hose / tube receiving at least one matched to the locking body recess is formed, which passes through the locking body in the effective operating position of the actuating member. The actuator is rotatable about the axis of the hose / tube between its two operating positions, axially slotted and elastically deformable.

The Arrangement is only suitable for a low degree of protection.

A series of patent applications for a family of protective tube / tube quick connectors, such as the Swiss patent, is presented CH 696 553 / German utility model DE 20 2004 013 983 - Glass fiber reinforced threaded connector, Swiss patent CH 696 287 / German utility model DE 20 2004 005 259 - Shielding hose, patent CH 696 250 / German utility model DE 20 2004 005 278 - Connecting element, patent specification CH 693 151 / Utility model DE 299 80 147 / international registration WO 2000/26 570 - Abstützelemente, Patentschrift CH 690 946 / Patent CH 690 809 / German patent DE 196 11 717 - shielded conductors, utility models DE 296 11 451 - Shielding, utility model DE 202 04 723 / European registration EP 1 245 888 - Angle adapter, German disclosure DE 36 26 403 - Connection fitting, European application EP 1 769 183 / international registration WO 2006/007 744 - Two-piece housing, in which essentially a "connection and fitting" is presented with various forms. The connecting and connecting piece consists essentially of a cylindrical housing with a connection part and in the housing wall at least one window-like opening and a projecting into this, spring-mounted tongue with latching hook for holding the hose / tube.

The Force fit of tongue and latching hook is not sufficient at high loads.

Another family of connectors and fittings is in the publications, such as Swiss patent CH 684 293 - Connector with blocking element, patent specification CH 645 448 / Utility model DE G 87 01 367 / German patent specification DE 30 09 540 - Connection fitting, disclosed; Here, the holding function of the hose / tube is achieved by a C-shaped pronounced with resilient legs locking element which is inserted through a window-like opening in the equipped hollow cylindrical hose / tube receiving housing, the hose / tube ensures secure fit.

The Locking element is the connection fitting - not suitable for assembly - loose added.

Another family of mounting couplings for hoses / tubes is given by the expression of a locking device, such that in the housing or on a slidably mounted on the housing ring, two diametrically opposed flexurally elastic tongues are formed, each carrying an inner projection, each in a Wellental of inserted hose / tube snaps in - like utility model DE 298 00 199 / Patent DE 198 57 337 - Pipe connector, utility model DE 297 22 987 / Patent DE 198 57 340 - Cable gland with shield, utility model DE 296 07 470 / Patent DE 197 14 661 - Coupling element, utility model DE 200 08 148 / European registration EP 1 152 180 - fitting, utility model DE G 93 13 807 / Patent DE 44 09 837 - Mounting coupling, utility model DE G 93 05 259 - Mounting coupling.

Strength Demands in rough operations are in the Opposition to power transmission with two diametrically opposite tongues with locking hooks, especially at strong vibration.

All published publications are suitable only to a limited extent or not at all for the specific use as a protective hose / pipe fitting - in particular not for a hose / pipe quick-release fitting for the electrical installation and system technology. Almost all quick connectors work on the principle of spring-mounted tongue with latching hooks, located in the window opening of the hollow cylindrical hose / tube - to open only with tools - in one piece except for the exception of the approach of elliptical wall thickness distribution - and two-piece with sliding sleeve and engaging retaining fingers, also called snap sleeve. Also determined the design the degree of protection, the holding power and the chemical compatibility / environment.

Of the The invention is therefore based on the object, a device according to The preamble of claim 1, a protective hose - / - rohrverschraubung - in particular a hose / pipe quick connector for the electrical Installation and plant technology to create.

These The object is achieved by the characterizing Features of claim 1 solved; to advantageous embodiments take the dependent claims. The aim is to build a protective hose / pipe fitting - in particular a hose / pipe quick connector for the electrical Installation and system technology - especially for World hoses / tubes, with a hollow cylindrical Holding body for hose / pipe receiving in the axial direction and one in a breakthrough or an annular groove of the Haltekörperwandung in the axial direction stored spring ring with function key.

The Solution of this problem is that as a locking element in the interior of the holding body at least one in the axial direction newly stored, elliptically shaped spring ring with function key is arranged, within its storage in the radial direction is elastically deformed by means of the function key, that the Diameter of the secondary circle of the elliptical spring ring larger as the largest outer diameter of the inserted hose / tube is and after introduction of the same in a well or a Wave trough can be latched after releasing the function key. This spring washer is largely secured against axial displacements, but expands in the radial direction with expansion of its secondary circle diameter Press the function key off. Is behind a circumferential rib a depression or a trough in the region of this spring ring shifted, it locks in on the basis of its elasticity not activated function key and places the hose / tube solid in the axial direction over a large peripheral area, the by the diameter of the secondary circle of the relaxed, elliptical shaped spring ring specified wist; the secondary circle is the inscribed circle the ellipse.

in principle can the hose / pipe holder and spring washer made of plastic or metal. For the holding body and the threaded portion will be different depending on the requirement Materials used, so that next to the holding body made of plastic, the threaded part glass fiber reinforced or made of metal.

One further advantage in the embodiment of the invention results, when facing the insertion direction of the hose / tube Side of the spring ring over part of its radial width is conically or funnel-shaped towards the center. On the one hand, this leads to a better locking of hoses / pipes with different corrugated hose / pipe dimensions and on the other hand becomes when inserting the hose / pipe on the oblique shaped side applied force over the inclined Area transformed into a radial expansion.

A Another embodiment of the invention provides that the mounted in the wall of the holding body elliptically shaped Spring ring made accessible defined from the outside is to be on and on this accessibility Removal function to implement. This can be done by at least one Housing bore, via which a manual to be operated function key radially and directly on the spring ring acts. Should the up / remove function prevent unauthorized use, Sabotage, vandalism, etc. are protected, is sufficient also a small hole or slot for the spring ring access means a thin rod-shaped tool, like a smaller one Screwdriver or a thorn, and the function key is eliminated or reduced to a thin rod with the outside diameter the holding body final.

According to one Another embodiment of the invention are preferably the housing bores for the function key at the points of the grinding Sections of main circle and elliptical spring ring laid; the main circle is the perimeter of the ellipse and about the outer perimeter given the Haltekörperwandung. A radial pressure on the Spring ring at one of these two or two places causes the around the hose / tube nested elliptical spring ring to a almost circular spring ring is going to be out of a trough the hose / pipe dissolves outwards and thus the / Hose / tube for axial movement within the holding body - z. B. for collection or removal - releases.

A Another form of the inventive novelty is given that the elliptically shaped spring ring over has no constant thickness, but that the Areas around the grinding cuts of main circle and elliptical Spring ring cross-section / material weakened be executed, which in addition to the spring ring in these areas gives a hinge function. Because the elliptically shaped spring ring is manufactured as a molded part, the cold flow remains, because the deformation to a circle only over the duration of Activating the function key takes place.

A further embodiment of the invention provides that the storage of the elliptically shaped spring rings happening in a partial breakthrough of the housing wall of the holding body. The spring ring is guided by supports in the environments of the grinding cuts of the main circle with the elliptical spring ring. Executed pressure on the spring ring at these points causes a radial widening of the elliptical spring ring in the surroundings of the grinding cuts of the secondary circle with the elliptical spring ring; in extreme cases, up to the exit of the spring ring on the / the breakthrough / openings of the housing.

The Insertion of the spring washer of the two-piece hose / pipe quick connector takes place in the hollow cylindrical holder body through the tube / tube insertion opening and the positional positioning in the openings and Housing bores of the holding body.

In a further advantageous embodiment of the holding body at desired spring ring positioning with an internal Annular groove provided for receiving the elliptical spring ring, so that the Hose / pipe holder closed to the outside and tight acts and only the housing bore for the and removal function with function key to seal if necessary.

If the choice falls on the variant "breakthrough" or "ring groove", is - in addition to the degree of protection - also of the tooling costs dependent. In addition, the annular groove sets a stronger Wall thickness of the holding body ahead.

According to one Another advantageous embodiment has the hose / pipe receiving at its opposite end of the insertion opening a mounting external thread according to standardized or commercially available dimensions. Instead of external thread is also the expression of the mechanical connection by means of an internal thread or a housing plug connection provided.

at All designs are in order to increase the degree of protection the inclusion of a sealing ring between the lower edge of the body and male / female thread or connector provided. The seal of the hose / pipe against the holding body - increase the degree of protection - in the simplest case by a the hose / tube upstream, in the bottom of the holding body positioned gasket; a flat and clean cutting edge at the inserted hose / pipe end is for condition. Instead, the / the tube / tube to be introduced with one of the constellation holding body - hose / tube adapted O-ring tightness between in the holding body established hose / tube and holding body produce. Also, the seal can be two-component inside the holding body be sprayed.

For the mechanical handling are in the lower part of the holding body Areas for receiving a hexagonal wrench intended; for better guidance of the key the surfaces are limited by stops. Farther is at the top of the holding body a polygonal area for the inclusion of a socket wrench attached.

Of the The invention is based on the following as an investment attached drawings of exemplary embodiments further clarified. Show it

1 Protective hose / pipe quick - fitting with hose / pipe holder, spring washer and hose / pipe, isolated, in perspective view

2 Quick connector with receptacle, hose / tube and spring washer, locked state
a) in side view and
b) as axial section and
c) as section AA

3 Quick connector with receptacle, hose / tube and spring washer, dissolved state
a) in side view and
b) as axial section and
c) as section BB.

Same and equivalent components of the embodiments are each provided with the same reference numerals in the figures.

The Description of the device according to the invention will be continued based on the explanation of the figures.

How out 1 can be seen, is the protective hose - / - tube quick connector 1 two-piece - consisting of the hose / pipe holder 2 and the spring washer 4 - built up. In principle, plastics, such as ABS, PP or PS, and / or metals, such as nickel-plated brass or steel or stainless steel, are used as materials depending on the intended use. At higher loads or degrees of protection, the threaded part 29 reinforced by plastic with glass fibers or executed in metal. The threaded part is here as external thread 29 shown; in practical handling and designs with internal thread or as a plug connection can be realized. If necessary, the housing, wall or coupling fitting is to be fitted by means of a sealing ring 28 set up for a higher degree of protection. The hollow cylindrical holding body 21 takes the / parallel grooved / hose / tube 5 within the housing wall 22 on.

At the opposite end of the insertion opening of the holding body is the transition to the threaded part outside a key / hexagonal surface 26 intended for open-end wrenches; the area is covered by the stop 27 limited and provides a guide for the tool. Likewise, at the top of the holding body - insertion opening - outside a polygonal surface 23 provided for the socket (not shown).

The holding body has two openings 24 . 241 . 242 and at least one housing bore 25 for the function key 42 on. In these openings of the holding body is through the insertion opening of the elliptically shaped spring ring 4 with function key 42 brought in. The spring ring is a molded part and is elliptical in the relaxed state. The spring ring is stretched almost circular for loading and unloading of the hose / tube by pressing the function key radially; Cold flow deformation can not occur. Is the condition given that the hose / Rohrauf- and removal may only be done by means of tools against unauthorized use - sabotage, vandalism protection, etc. - is also sufficient a small hole or a slot 25 for the spring ring access by means of a thin tool, such as a small screwdriver or a mandrel / needle; the function key reduces to a thin pin, with the outer diameter of the holding body final.

The spring ring is loosely mounted, lies with its lower edge on the side of the opening and is guided by the unbroken sides of the housing wall of the holding body; in the area of these sections of the housing wall 30 . 301 . 302 . 31 it was reduced to a minimum wall thickness. For the introduction and the positioning of the hose / tube in the holding body is used as an insertion of the spring ring inside with a conical starting slope 41 Mistake.

A tightness and an increase in the protection between the holder body and hose / tube is in the simplest case by a tube / tube upstream, positioned in the bottom of the holder body flat gasket 32 achieved (not shown); a flat, clean hose / pipe cutting edge on the hose / pipe end is required. Also, the / the tube / tube to be inserted with a constellation holding body - tube / tube adapted O-ring 33 Make tightness between inserted in the holding body hose / tube and holding body (not shown). Instead of a single part, the seal can also be molded two-component.

If a higher degree of protection is required in the application, the breakthroughs in the area of the spring ring 24 . 241 . 242 also by means of a thin wall according to the front wall 30 . 301 . 302 be closed, possibly even with slight thickening of the wall thickness of the holding body (not shown).

2 shows the quick connector 1 with recording 2 , Hose / tube 5 and spring washer 4 in side view, 2a ) - left picture - and as axial section, 2 B ) - right picture - and - in the lower half of the picture - 2c ) as section AA; the elliptical spring washer is in the idle state, the inserted hose / tube is locked.

According to 2a ) is the / the circumferentially ribbed corrugated hose / tube 5 cut to length and into the hose / tube holder 2 introduced. It is clear in the area of the breakthrough 24 - in particular the breakthrough 1 241 - The elliptical preformed spring washer 4 make out, which continues through the housing bore 25 with his function key 42 protrudes. The corrugated tube (s) 5 is inserted over the spring ring by means of the depressed function key holding in the holding body.

Depending on the application and degree of protection is in the bottom of the holder body 21 a seal 32 . 33 provided, which seals the / the corrugated tube / tube against the recording. The seal may be in the holding body as a loose part or may have been introduced into the manufacturing process in a two-component tight manner. The tightness requires a clean cut of the corrugated hose / pipe. The holding body is externally with a key surface 26 equipped, z. B. a hexagonal surface; the key holder will come through the stop 27 guided. At the opposite upper edge of the holding body may be another key area 23 be provided, which serves to receive a socket wrench. Here, in particular, the assembly and operation from the front (in the figures from above) is taken into account, since in adjacent mounted hose - / - rohrverschraubungen in housings or walls of the lateral access for installation and operation is difficult.

The attachment of the holding body 21 in housing or wall via the molded-on hollow cylinder 34 with external thread 29 by means of a locknut or in a corresponding threaded hole of the housing or wall. This type of attachment can also be done by a molded-on hollow cylinder with internal thread or by a pronounced with latching or plug-in hollow cylinder. Depending on the degree of protection, the attachment is by a seal 28 between holding body and housing / wall to complete.

As a special feature 2 B ) clearly how the / the corrugated hose / tube 5 in the hose / pipe holder 2 forms - especially in the area of the spring ring with breakthrough 24 respectively. Breakthrough 2 242 , The elliptically shaped spring ring 4 nestles with its run-up slope 41 wedge-shaped in the trough 51 of the hose / tube. Depending on the width of the corrugation of the tube / tube and the angular slope of the spring ring of the spring ring penetrates to the inner diameter of the tube / tube, so that the secondary circle of the elliptical spring ring with the inner diameter 51 . 52 of the hose / pipe at the narrowest points.

This peculiarity is also due to the cut AA of the 2c ) - in particular the position of the elliptically shaped in its rest position spring ring 4 in the holding body 21 , The spring ring is positioned with the function key 42 on the one hand through the front wall 30 - In particular through the left and right side front wall 301 . 302 as well as the back wall 31 , The function key is in the housing bore 25 guided. As the figure / the section can be seen further, the Ne benkreis the ellipse of the spring ring is not completely affected by the inner diameter 52 of the hose / tube. If the secondary circle of the spring washer is tangent to the inner diameter of the hose / pipe, more than 2/3 of the hose / pipe circumference is held securely by the spring washer. Clearly, the taper of the spring ring for the hinge function in the surroundings of the supporting walls 30 . 301 . 302 . 31 identify.

3 shows the quick connector 1 with recording 2 , Hose / tube 5 and spring washer 4 in side view, 3a ) - left picture - and as axial section, 3b ) - right picture - and - in the lower half of the picture - 3c ) as section BB; the elliptical spring ring is in working condition, the inserted hose / tube is loosened, the hose / tube can be removed from the receptacle.

According to 3a ) is the / the circumferentially ribbed corrugated hose / tube 5 cut to length and into the hose / tube holder 2 introduced. It is clear in the area of the breakthrough 24 - in particular the breakthrough 1 241 - The elliptical preformed spring washer 4 make out, which continues through the housing bore 25 with his function key 42 protrudes. Following this illustration, the / the corrugated hose / tube 5 is inserted loosely over the spring ring by means of pressed function key in the holding body; the hose / tube can be removed from the receptacle.

As a special feature 3b ) clearly how the / the corrugated hose / tube 5 in the hose / pipe holder 2 forms - especially in the area of the spring ring with breakthrough 24 or breakthrough 2 242 , The elliptically shaped spring ring 4 is while holding down the function key 42 in open position; favors the deformation of the spring ring while holding down the function key by the conical shape of the same. The lateral stroke of the spring ring is highlighted by the figure and illustrated in the following section BB.

Since the spring ring preferably in the region of the supporting walls 30 . 31 tapered is pronounced - this feature is also due to the cut BB of 3c ), in particular the position of the spring ring in its working position 4 in the holding body 21 - nestles the spring ring with pressed function key 42 to the supporting walls 30 . 31 , deforms almost circular and pushes through the lateral openings 24 . 241 . 242 the housing wall of the holding body to the outside. In this position - the working position - give the holding body in conjunction with the spring ring / the hose / tube for the purpose of removal / release; the nearly circular widened elliptical spring ring has a larger inner diameter than the / the outer tube diameter / tube 54 Has. If the pressure on the function key is reduced, the spring ring resumes its elliptical shape of the rest position. Clearly, the taper of the spring ring for the hinge function in the surroundings of the supporting walls 30 . 301 . 302 . 31 identify.

In another embodiment of the inventive novelty reduces the breakthrough 24 . 241 . 242 on a specific cutout - an annular groove - the housing wall 22 the interior of the holding body 21 - If necessary, even with the choice of a thicker wall thickness - so that the remaining thin, but sufficient for the working position of the spring ring wall thickness, the hose / tube recording appears to be closed to the outside. This is for the mechanical strength of the hose / tube receiving 2 advantageous and the choice of a higher degree of protection conducive.

In a further embodiment of the invention, the operation of the hose / pipe receiving 2 from the front (in the figures from the top) to the accessibility of the control units in multiple arrangement of fittings 1 better to enable. With regard to this problem, several solution variants are presented, such as, in principle, the opening with or without tools and furthermore using standard or specific tools - with or without retaining the function key 42 , Maintaining the solution principle, either 1. Pressure forces are at the location of the function key 42 or 2. tensile forces at the points of the grinding cuts of secondary circle and elliptical spring ring 4 applied.

To 1. receives the function key 42 in an exemplary embodiment, a wedge-shaped flattening opening forwards / upwards, to which front ne / up by means of a guided, thin screwdriver to open pressure on the wedge-shaped flattening is exerted on the elliptical spring ring 4 is transmitted at the location of the function key. The tool guide can drill a hole parallel to the longitudinal extent of the hose / pipe holder 2 or a slot forming a fixed point for tool holding according to the law of levers.

2. According to another embodiment, at the points of the grinding cuts of secondary circle and elliptical spring ring 4 a guide provided for a tool, which introduced from the front / top, the elliptical spring ring widens to the circle.

The tool is a thin screwdriver; The tool may also be formed as a flat hollow cylinder portion which is between the housing inner wall of the holding body 21 and the corrugated tube 5 is introduced and acts on the run-up slope of the spring ring.

According to a further embodiment, the hollow cylindrical portion is an integral part of the hose / tube receiving 21 designed, displaceably mounted in this in the axial direction and in the direction of the starting slope of the spring ring 4 acting on this widening for the purpose of raising or removal of the corrugated hose / tube 5 ,

The particular advantages of the invention are that by means of a partially reduced, only two-piece, simply constructed and manufacturable protective tube / tube quick - fitting sufficient forces to hold corrugated tube / tube assemblies Schutzartgerecht can be applied and the pick / remove mechanism simple, self-explanatory and without a "third" hand he follows.

advantageous Further developments of the invention are the subject of the subclaims; the numerous possibilities and advantages of the design of the Invention are reflected in the number of property rights claims contrary.

1

Conduit - / - pipe quick connector

2

Hose / tube support

21

holding body

22

housing wall

23

Socket surface (not shown)

24

breakthrough Area spring ring

241

breakthrough 1

242

breakthrough 2

25

housing bore function key

26

key area

27

attack

28

seal (not shown)

29

external thread

30

front wall Area spring ring

301

front wall 1

302

front wall 2

31

rear wall Area spring ring

32

gasket (not shown)

33

O-ring seal (not shown)

34

Hollow cylinder, molded

4

Spring washer, elliptical

41

starting slope

42

function key

5

Hose / tube, umfangsparallelgerippt

51

trough

52

Rated Inner diameter

53

Wellenberg

54

Rated outer diameter

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

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Claims (15)

Protective hose / pipe fitting - in particular a hose / pipe quick - fitting for electrical installation and plant engineering - in particular for world hoses / pipes, with a hollow cylindrical holding body for hose / pipe receiving in the axial direction and one in a breakthrough or an annular groove Haltekörperwandung stored in the axial direction of the spring ring with function key, characterized in that (as a locking element in the interior of the holding body 2 . 21 ) at least one in the axial direction just stored, secured against axial displacements, elliptically shaped spring ring ( 4 ) with a through a lateral holding body housing bore ( 25 ) externally accessible function key ( 42 ) is arranged, which is elastically deformed within its storage in the radial direction by means of an actuated function key, that the diameter of the secondary circle of the elliptical spring ring is greater than the largest outer diameter of the introduced tube / tube ( 5 ) is that after introduction of the same the same is locked after release of the function key in a depression or a trough and in that the hose / tube is stretched in the axial direction over a large peripheral region, by the diameter of the secondary circle of the relaxed, elliptical shaped spring ring is specified. Protective hose / pipe quick-connect fitting according to claim 1, characterized in that the hose / pipe receptacle ( 2 ) and the spring washer ( 4 ) are made of plastic or metal and that for the holding body ( 21 ) and the threaded part ( 29 ) Different materials are used, such as the holding body made of plastic and the threaded part of glass fiber reinforced plastic or metal. Protective hose / pipe quick connector according to at least one of Claims 1 and 2, characterized in that the direction of insertion of the hose / pipe ( 5 ) facing side of the spring ring ( 4 ) a run-on slope ( 41 ) and that the spring ring in the region of the supporting walls ( 30 . 31 ) has reduced wall thicknesses. Protective hose / pipe quick connector according to at least one of claims 1 to 3, characterized in that the up / removal function of the holding body ( 21 ) by means of a thin rod-shaped tool through at least one small hole ( 25 ) or a slot for the spring lock access or that the function key ( 42 ) to a thin, on the spring ring ( 4 ) acting rod is reduced. Protective hose / pipe quick connector according to at least one of claims 1 to 4, characterized in that at least one housing bore ( 25 ) for the function key ( 42 ) in the places of the grinding cuts of main circle and elliptical spring ring ( 4 ) Is in the same axial height. Protective hose / pipe quick connector according to at least one of claims 1 to 5, characterized in that the elliptically shaped spring ring ( 4 ) has no constant wall thickness, but that the areas around the grinding cuts of main circuit and elliptical spring ring cross-section / material are weakened executed. Protective hose / pipe quick connector according to at least one of claims 1 to 6, characterized in that the mounting of the elliptically shaped spring ring ( 4 ) with function key ( 42 ) in a partial breakthrough ( 24 ) of the housing wall ( 22 ) of the holding body ( 21 ) is done by supporting the housing wall ( 30 . 301 . 302 . 31 ) in the vicinity of the grinding cuts of the main circle with the elliptical spring ring. Protective hose / pipe quick connector according to at least one of claims 1 to 7, characterized in that the assemblage of the spring ring ( 4 ) with function key ( 42 ) of the two-piece hose / pipe quick connector ( 1 ) in the hollow cylindrical holding body ( 21 ) through the insertion opening of the hose / pipe receiving ( 2 ) and the positional positioning in the breakthrough ( 24 ) and the housing bore ( 25 ) of the holding body. Protective hose / pipe quick connector according to at least one of claims 1 to 8, characterized in that the holding body ( 21 ) an inner annular groove and a housing bore ( 25 ) for receiving the elliptical spring ring ( 4 ) with function key ( 42 ) having. Protective hose / pipe quick connector according to at least one of claims 1 to 9, characterized in that the hose / pipe receiving ( 2 ) at its end opposite the insertion opening via an external thread ( 29 ) has to housing / wall mounting according to standardized or commercially available dimensions or that the mechanical connection is made by means of an internal thread or that the terminal is a housing plug connection. Protective hose / pipe quick connector according to at least one of claims 1 to 10, characterized in that in order to increase the degree of protection, the inclusion of a sealing ring ( 28 ) between the lower edge of the lower body and the outer / inner thread ( 29 ) or plug connection is mounted. Protective hose / pipe quick connector according to at least one of claims 1 to 11, characterized in that the seal of the hose / pipe ( 5 ) against the holding body ( 21 ) by a positioned in the bottom of the holding body flat gasket ( 32 ) or that the hose / tube to be inserted by a matched O-ring ( 33 ) Tightness between inserted hose / tube and holding body produces or that a seal is molded in two-component inside the holding body. Protective hose / pipe quick connector according to at least one of claims 1 to 12, characterized in that for mounting in the lower region of the holding body ( 21 ) Areas for receiving a tool key ( 26 ) are provided and that at the upper edge of the holding body a polygonal surface ( 23 ) is attached for the approach of a socket wrench. Protective hose / pipe quick connector according to at least one of claims 1 to 13, characterized in that the function key ( 42 ) has a wedge-shaped flattening opening forwards / upwards, to which pressure is exerted from the front / top by means of a guided, thin rod-shaped tool for opening the spring ring, wherein the tool guide has a bore parallel to the longitudinal extent of the hose / pipe receptacle ( 2 ) or a slot for tool holder according to the lever law. Protective hose / pipe quick connector according to at least one of claims 1 to 14, characterized in that at the points of the abrasive cuts of secondary circle and elliptical spring ring ( 4 ) a guide for a thin rod-shaped tool is provided, which is introduced from the front / top, the elliptical spring ring widens to the circle or that a flat hollow cylinder portion is formed as a tool which between the housing inner wall ( 22 ) and the corrugated tube ( 5 ) and on the run-on slope ( 41 ) of the spring ring acts, wherein the hollow cylindrical portion also as an integral part of the hose / pipe receiving ( 21 ) is formed, is mounted displaceably in this in the axial direction and acts on the run-on slope of the spring ring.