KR20010086437A - Securing coupling for corrugated pipes - Google Patents

Abstract

The invention has a tubular sleeve 1 and at least one blocking protrusion 5, 5 ′ wherein the locking tongue 2 with respect to the sleeve 1 is secured by at least one safety element 6. Safety couple for corrugated pipe, which can be connected to sleeve 1 and slide radially with a spring effect, and the blocking protrusions 5, 5 'can be moved to a separate position outside the fitting with grooves of the corrugated pipe. In the ring, the locking tongue 2 is arranged radially forwardly inclined from the outer circumferential wall 4 of the tubular sleeve 1 by means of an integrated hinge 18, the safety coupling being the first locking Opposite the tongue 2 has at least one second locking tongue 8 movably disposed in a second recess 9 in the outer circumferential wall 4 of the sleeve 1, wherein the second locking The tongue 8 is designed with an integrated hinge with respect to the sleeve 1 And the tubular sleeve 1 at the open leading end, which is joined by at least one safety element 10, which has at least one elliptical backup ring 19 in the area of the sleeve piece 7, The second locking tongue 8 relates to a safety coupling for a corrugated pipe, characterized in that it has a lever arm 12 which projects above the safety element 10 in the axial direction over the open leading end.

Description

Safety coupling for corrugated pipes {SECURING COUPLING FOR CORRUGATED PIPES}

German Patent No. 39 03 353 A1 discloses a connection armature for pipes or hoses with protrusions along the periphery, in particular for flexible corrugated hoses having a wavy corrugation or the like which intersects the periphery of the periphery of the hose axis. It is known that the connecting armature has a sleeve for receiving the end of the corrugated hose, the wall of which is envisioned with a deformation tongue against the resetting force of the spring region, the deformation tongue of the sleeve Extending in the axial direction and having a projection directed to an inner region of the sleeve for fitting into its corrugated corrugated trough of a corrugated hose or corrugated pipe or the like for fixing its axial position, wherein the connecting armature Is a single tongue envisioned and its region with protrusions is Characterized in that it has a larger dimension in the direction and length of the projection in the axial direction of the sleeve is approximately equal to the inner radius of the sleeve, at least.

German Patent No. 296 13 054 U1 discloses a pipe connection made of plastic, which consists of a sleeve-shaped body for receiving rigid or flexible pipes (hoses) and a jacket of the body comprising at least one formed tongue. Which has a motion which is formed by a substantially U-shaped recess and is spring-supported around its valleys, and at its free end for the fit of the recess into the recess or the pressure of the strip of the pipe forwardly towards the position. With a blocking element for rear gripping, the tongue and blocking element are directed at right angles to the sleeve axis.

In European Patent No. 04114500 B1 a coupling is known, wherein the underside of the finger is connected with the body of the coupling by a side bearing element, the side bearing element being flexible or flexible due to the elastic torsional deformation of the element around the transverse axis. Have a bent turn.

The disadvantage of all the couplings is that the locking element or finger is each too weak to hold the waveform line in position for strong in-output, or strong enough to hold the waveform line but instead the finger It is too stiff to align for convenient pressure towards the connection. In addition, the latter coupling has the disadvantage that, in the absence of any tools, the turning of the corresponding finger by unintentional and / or intentional misuse may allow unpredictable separation of the corrugated pipe. have.

The present invention relates to safety couplings for corrugated pipes.

Various forms of corrugated pipes have been known for many years. Many types of corrugated pipes have elastic fingers and have spring loaded locking elements, wherein the elastic fingers are projections that are repeatedly fitted into the corrugated troughs of the corrugated pipe to stabilize and perform positional positioning of the pipes. It is provided. The finger of the coupling is elastically deformed when the pipe is pushed into or removed from its position.

1 is a perspective view of an embodiment of a first safety coupling according to the invention,

2 is a plan view of the safety coupling of FIG. 1 with an open sleeve fragment, FIG.

3 is a plan view of the safety coupling of FIG. 1 with a closed sleeve fragment, FIG.

4 is a perspective view of an embodiment of a second safety coupling according to the invention,

5 is a perspective view of an embodiment of a third safety coupling according to the invention,

6 is a plan view of the safety coupling of FIG. 5 with a closed sleeve fragment;

7 is a longitudinal sectional view of an embodiment of a fourth safety coupling according to the invention,

8 is a longitudinal sectional view of another embodiment of a safety coupling according to the invention,

9 is a plan view in the radial direction of the safety coupling of FIG.

10 is a longitudinal view of an embodiment of a disassembly tool according to the invention;

11 is a radial plan view of the disassembly tool of FIG. 10.

The technical problem to be solved by the present invention from the above is that the above-mentioned disadvantage is at least partially eliminated with the aid of the newly invented safety coupling for corrugated pipe. In particular, the technical problem to be solved by the present invention is to provide a safety coupling for a corrugated pipe in which a previously fixedly located corrugated pipe can be separated in an uncomplicated way only with the aid of a tool, which is said waveform. This prevents the pipe from inadvertently slipping out of position.

In the present invention, the problem is solved by a safety coupling according to claims 1, 2, 3 and 9 and a safety coupling kit according to claim 13.

The safety coupling according to the invention comprises a tubular sleeve having an inlet end open for receiving a corrugated pipe and at least one first locking tongue movably disposed in a first recess in the outer circumferential wall 4 of the sleeve. And at least one blocking protrusion for fitting into the outer groove of the corrugated pipe. The locking tongue is coupled to the sleeve by at least one safety element with respect to the sleeve so that the blocking protrusion can be moved to a separate position outside the fit with the corrugated pipe, and can be radially slid with a spring effect. .

The gist of the present invention is that the locking tongue is arranged in an inclined sleeve piece radially forward from the outer circumferential wall 4 of the tubular sleeve by means of an integrated hinge.

Uncomplicated opening is only possible with the aid of a tool, by means of the integrated hinge and with the corresponding design and configuration of the tubular element of the safety coupling which receives the sleeve piece and the open end of the sleeve piece. Thus, the blocking protrusion of the finger of the sleeve piece can be moved to a separate position outside the fit with the groove of the corrugated pipe.

Another aspect of the invention is that the safety coupling has at least one second locking tongue movably disposed in a second recess in the outer circumferential wall 4 of the sleeve opposite the first locking tongue, Wherein the second locking tongue is engaged by at least one safety element that is not designed with an integrated hinge with respect to the sleeve. In this way, and in the opening of the sleeve piece, at least the second locking tongue fits in the outer circumferential groove of the corrugated pipe, so that unintentional or accidental detachment of the corrugated pipe is practically excluded. In the case where the connection or coupling of the second locking tongue is designed as an integrated hinge, the separation of the corrugated pipe is only possible by opening it with an auxiliary tool, in which case the (first) integrated hinge is loose Unintentional separation may occur when losing / separating. To avoid this, the second engagement / connection of the second locking tongue is not designed with an integrated hinge.

It should be emphasized that the sleeve piece may form part of the open introduction end.

The tubular sleeve has a back-up ring in the open inlet end, at least in the region of the sleeve piece, as the corrugated pipe is fixedly arranged in the safety coupling, the sleeve piece made by the integrated hinge. The stability of the coupling / connection of the to the sleeve is increased.

In addition, the backup ring is elliptical since it allows for very good fixation of the corrugated pipe, and in addition to the open sleeve fragment, the loosening / separating of the corrugated pipe may cause the corrugated pipe to be disconnected outside the fitment in the groove of the corrugated pipe. In the radial displacement of the second locking tongue is only possible with the aid of a tool. Thus, unintentional separation of the corrugated pipe is practically excluded.

In the design arrangement, by the light reciprocating motion of the previously fixedly placed hose and / or by the smaller radial deformation of the sleeve, the corrugated pipe can be detached and consequently come out of the safety coupling. This represents a particularly uncomplicated separation of the corrugated pipe from the safety coupling after opening the sleeve piece.

The second locking tongue has a lever arm that projects over the safety element in an axial direction over the open inlet end, which is radial in the manner and in the portion of the safety coupling positioned over the open inlet end of the sleeve. This is because, by turning, relatively convenient separation of the stable corrugated pipe that follows is by means of radial turning of the second locking tongue in a separating position outside the fitting.

The second safety coupling represents a tubular sleeve having an inlet end open to receive a corrugated pipe, wherein the sleeve has at least one blocking protrusion for fitting the corrugated pipe to a circumferential groove. The gist of the present invention is that the blocking protrusion is arranged in an inclined sleeve piece radially forward from the outer circumferential wall 4 of the tubular sleeve by means of an integral hinge.

By means of the integrated hinge and in the corresponding design and configuration of the tubular element of the safety coupling which receives the sleeve piece and the open end of the sleeve piece, uncomplicated opening is only possible with the aid of a tool. Thus, the blocking protrusion of the sleeve piece is moved to a separate position outside the fit with the groove of the corrugated pipe.

Another aspect of the invention is that the safety coupling has at least one locking tongue movably disposed in a recess in the outer circumferential wall 4 of the sleeve opposite the blocking protrusion, wherein the locking tongue is It is coupled by at least one safety element that is not designed with an integrated hinge with respect to the sleeve. In this way, and when the sleeve piece is opened, at least the second locking tongue is fitted in the outer groove of the corrugated pipe, so unintentional or accidental disassembly of the corrugated pipe is practically excluded. In the case where the connection or coupling of the second locking tongue is designed as an integrated hinge, the separation of the corrugated pipe is only possible by separating with an auxiliary tool, in which case the (first) integrated hinge Unintentional separation may occur if is loosened / separated. To avoid this, the second engagement / connection of the second locking tongue is not designed as an integrated hinge.

It should be emphasized that the sleeve piece forms part of the open leading end.

As the corrugated pipe is fixedly arranged in the safety coupling, the tubular sleeve has a backup ring at the open inlet end, at least in the region of the sleeve piece, and the sleeve piece made by the integrated hinge to the sleeve. The stability of the bond / connection is increased.

In addition, the backup ring is elliptical because it allows for a very good fixation of the corrugated pipe, in addition to loosening / separation of the corrugated pipe in the open sleeve fragment only to a detachment position outside the fitment in the groove of the corrugated pipe. Only with the aid of a tool in the radial displacement of the second locking tongue. Thus, unintentional separation of the corrugated pipe is practically excluded.

In the design arrangement, the corrugated pipe can be separated and subsequently released from the safety coupling by light reciprocating movement of the previously fixedly placed hose and / or by smaller radial deformation of the sleeve. have. This represents a particularly uncomfortable separation possibility from the safety coupling of the corrugated pipe after opening the sleeve piece.

The second locking tongue has a lever arm that projects over the safety element in an axial direction over the open inlet end, which is radial in the manner and in the portion of the safety coupling positioned over the open inlet end of the sleeve. This is because, by turning, relatively convenient separation of the stable corrugated pipe which follows is by means of radial turning of the second locking tongue at a separation position outside the fitting.

The third safety coupling represents a tubular sleeve having an inlet end open to receive the corrugated pipe, wherein the sleeve has at least one blocking protrusion for fitting the corrugated pipe to the outer circumferential groove. The gist of the present invention is that the blocking protrusion is arranged in an inclined sleeve piece radially forward from the outer circumferential wall 4 of the tubular sleeve by means of an integral hinge.

By means of the integrated hinge and in the corresponding design and configuration of the tubular element of the safety coupling which receives the sleeve piece and the open end of the sleeve piece, uncomplicated opening is only possible with the aid of a tool. Thus, the blocking protrusion of the sleeve piece is moved to a separate position outside the fit with the groove of the corrugated pipe.

Another aspect of the invention is the part of the locking unit in which the blocking protrusion is arranged between two recesses, in particular slot-shaped recesses, which are secured forward by two safety elements, for example in the form of a wide material strip. To the sleeve piece that is inclined toward the end. The outer and / or inner partial tubular jacket profile of the locking unit has at least one damping portion in the longitudinal direction of the sleeve piece.

On the basis of this material damping and in spite of bilateral engagement of the sleeve piece, a good radial turning ability with a simultaneous high strength level of the locking unit is established.

The gist of the invention is finally that the safety coupling has at least one locking tongue movably disposed in a recess in the outer circumferential wall 4 of the sleeve opposite the blocking protrusion, wherein the locking tongue is It is coupled by at least one safety element that is not designed with an integrated hinge with respect to the sleeve. In this way, and in the opening of the sleeve piece, at least the second locking tongue fits in the outer groove of the corrugated pipe, so that unintentional or accidental detachment of the corrugated pipe is practically excluded. In the case where the connection or coupling of the second locking tongue is designed as an integrated hinge, the separation of the corrugated pipe is only possible by separating with an auxiliary tool, where, in the case of previously opened, the (first) integration Unintentional disassembly may occur if the hinges are loosened / separated. To avoid this, the second engagement / connection of the second locking tongue is not designed as an integrated hinge.

It should be emphasized that the sleeve piece forms part of the open leading end.

As the corrugated pipe is fixedly arranged in the safety coupling, the tubular sleeve has a backup ring at the open inlet end, at least in the region of the sleeve piece, of the sleeve piece to the sleeve made by the integral hinge. The stability of the bond / connection is increased.

In addition, the backup ring is elliptical because it allows for a very good fixation of the corrugated pipe, in addition to loosening / separation of the corrugated pipe in the open sleeve fragment only to a detachment position outside the fitment in the groove of the corrugated pipe. Only with the aid of a tool in the radial displacement of the second locking tongue. Thus, unintentional separation of the corrugated pipe is practically excluded.

In the design arrangement, the corrugated pipe can be separated and subsequently released from the safety coupling by light reciprocating movement of the previously fixedly placed hose and / or by smaller radial deformation of the sleeve. have. This represents a particularly uncomfortable separation possibility from the safety coupling of the corrugated pipe after opening the sleeve piece.

The second locking tongue has a lever arm protruding from the safety element in an axial direction over the open inlet end, which is radial in the manner and part of the safety coupling positioned over the open inlet end of the sleeve. This is because, by turning, relatively convenient detachment of the safety coupling that follows occurs by means of radial turning of the second locking tongue in the release position outside the fit.

In a third safety coupling, the at least one safety element preferably has at least one further recess in the shape of another slot, for example in the longitudinal direction of the sleeve piece, which makes the locking unit flexible. It is because of the increase.

In the first safety coupling, the locking tongue is designed to taper conically in a direction away from the blocking protrusion and / or the second locking tongue is designed to taper in a direction away from the blocking protrusion. It is preferred that this method allows for a high degree of turning and subsequent more convenient disassembly.

In a second safety coupling, the locking tongue is preferably designed to taper conically in a direction away from the blocking protrusion, since this method allows for a high degree of turning and subsequent more convenient disassembly.

In the safety coupling, the sleeve preferably has a slot-shaped recess designed as a hollow profile for the reception of the sleeve piece, which design arrangement relates to the possibility of the locking capability of the sleeve piece in the sleeve. This is because it is relatively easy to realize and preferable in terms of cost.

Finally, in the joining, the slot-shaped recess preferably has a contact surface defining a first protrusion in the hollow profile of the recess, wherein the free end of the sleeve piece is acted upon by the action of the sleeve piece in the sleeve. It is preferred to have a corresponding contact surface with a second projection for the rear gripping of the first projection while in the locked state.

It is emphasized that the backup ring can have a circular shape.

A fourth safety coupling according to the invention for corrugated pipes comprises at least one first movably arranged in a first recess in the outer circumferential wall 4 of the sleeve as well as the inlet end opened for receiving the corrugated pipe. Having a locking tongue, wherein the sleeve has at least one blocking protrusion for fitting into the outer circumferential groove of the corrugated pipe. The locking tongue is connected to the sleeve by at least one safety element with respect to the sleeve, and in such a way that the blocking protrusion can be moved to a separate position outside the fit with the groove of the corrugated pipe. Can slide radially.

The safety coupling has at least one further locking tongue disposed radially movable in another recess in the outer circumferential wall 4 of the sleeve, where it has at least one further safety element with respect to the sleeve. Are combined by. All safety elements are strip shaped in design, but all locking elements are conical tapered in a direction away from the blocking protrusion in design.

At least one locking tongue is connected to the sleeve in the radial direction by at least one dome-shaped connecting strip in the stationary state and is defined within the pivoting movement. This is because under certain circumstances an excessively wide turn at the stress of an excessively strong material is excluded.

The main advantage of the fourth safety coupling according to the invention is that, in comparison with the embodiment with an integrated hinge with comparative stability, this in particular has a small wall thickness and, therefore, in corresponding mass production, manufacturing costs are significantly reduced. Is that.

In the fourth safety coupling, it is preferred to have at least three, in particular special four locking tongues, since a relatively high fit margin is ensured in this way, so that the remaining locking tongue is generally It always works when one single locking tongue breaks as it always engages and prevents unintentional separation.

In addition, the fourth safety coupling preferably acts when the at least one locking tongue has at least one recess, for example an elliptic shape, which saves material in the manufacture of the safety coupling and thus Cost savings

The safety coupling kit according to the invention comprises a safety coupling and disassembly tool according to a fourth embodiment, wherein during disassembly the disassembly tool grips around the hose and extends longitudinally between the corrugated pipe and the safety coupling. It has two half covers which can slide in the axial direction of and can be assembled with each other, or two half covers which are pivoted by at least one connecting element similar to a hinge.

During disassembly, the at least two locking tongues exit from the fitting by the enclosing of the hose by pushing in the radial direction in the longitudinal axis between the corrugated pipe and the safety coupling, so that the corrugated pipe is connected to the safety coupler. Can come out of the ring.

The at least one half cover has at least one locking tongue that pivots radially, which, if necessary, surrounds the corrugated pipe with the disassembly tool and pushes it between the corrugated pipe and the safety coupling, if necessary. The lockable tongue is moved toward the fitting, and is disposed on the outer surface of the half cover of the corrugated corrugated trough of the corrugated pipe by a switch face, the corrugated pipe exits the safety coupling. The disassembly method is particularly advantageous for very soft hoses because the mechanical load on it is particularly low.

The disassembly tool as well as the safety coupling according to the invention can be combined with various material forms and material components, for example polyethylene, polyimide and the like, in addition to this, for example, with angled parts, flanges In various forms with respect to the sleeve, such as with or without a straight portion or the like, it can be designed according to the desired assembly needs.

Hereinafter, two embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 shows a perspective view of a first embodiment of a safety coupling according to the invention in the form of a flangeable coupling angle.

The safety coupling shows an angled tubular sleeve 1, which has an open end for receiving a corrugated pipe. Also shown is a first locking tongue 2, which is arranged to be movable in the outer circumferential wall 4 of the sleeve 1 in the first recess 3 when the sleeve piece 7 is closed. The sleeve piece 7 is coupled to the sleeve 1 by an integrated hinge 18. The locking tongue 2 has a blocking protrusion 5 for fitting the corrugated pipe into the outer circumferential groove. With respect to the sleeve 1 the locking tongue 2 is connected to the sleeve 1 by means of one safety element 6 so that it can slide radially by a spring effect in the form of a material strip here. The blocking protrusion 5 can be moved to a separate position outside the fit with the groove of the corresponding corrugated pipe. The locking tongue 2 is arranged in the sleeve piece 7 which is inclined radially forward from the outer circumferential wall 4 of the tubular sleeve 1 by means of an integrated hinge 18.

The safety coupling also has a second locking tongue 8 movably disposed in a second recess 9 in the outer circumferential wall 4 of the sleeve 1 opposite the first locking tongue 2. In the sleeve 1, the second locking tongue 8 is here connected by a safety element 10 in the form of a material strip. The tubular sleeve 1 has a circular back-up ring 19 at the open leading end. The detachable position of the blocking protrusion 11 is simplified by the fact that the second locking tongue 8 has a lever arm 12 projecting onto the safety element 10 in the axial direction over the open leading end. Do.

The sleeve 1 also has a slot-shaped recess 13 which is designed in a hollow profile for receiving the sleeve piece 7.

Another embodiment according to the description of the invention relating to this and the first safety coupling is to be clearly recognized in FIGS. 2 and 3 and with the first safety coupling not covered here in the second safety coupling. Except insignificant differences, FIGS. 2 and 3 may be employed for illustrative purposes.

4 shows a perspective view of an embodiment of a second safety coupling according to the invention in the form of a coupling angle which can be flanged.

The safety coupling shows an angled tubular sleeve 1 with an inlet end open for receiving a corrugated pipe. In addition, there are three blocking protrusions 5, 5 ′ rigidly disposed in the outer circumferential wall 4 of the sleeve 1 with the sleeve piece 7 closed. .

The sleeve piece 7 is joined with the sleeve 1 by an integrated hinge 18. The blocking protrusions 5, 5 ′ are arranged inclined radially forward in the sleeve piece 7 from the outer circumferential wall 4 of the tubular sleeve 1 by means of an integrated hinge 18. In addition, the safety coupling has a locking tongue 8 movably disposed in a recess 9 in the outer circumferential wall 4 of the sleeve 1 opposite the blocking protrusions 5, 5 ′, The locking tongue 8 is here connected with respect to the sleeve 1 by means of the safety element 10 in the form of a material strip here. The tubular sleeve 1 has a circular backup ring 19 at the open leading end.

The disengaging position of the blocking protrusion 11 is simple by the fact that the locking tongue 8 has a lever arm 12 projecting from the safety element 10 in the axial direction over the open leading end.

The sleeve 1 also has a slot-shaped recess 13 which is designed in a hollow profile to receive the sleeve piece 7.

Another embodiment according to the description of the invention relating to this and the first safety coupling is to be clearly recognized in FIGS. 2 and 3 and with the first safety coupling not covered here in the second safety coupling. Except insignificant differences, FIGS. 2 and 3 may be employed for illustrative purposes.

The slot-shaped recess 13 has a contact surface 15 forming a first protrusion 14 in the recess 13, the free end of the sleeve segment 7 being the sleeve segment 7 When locking the sleeve 1 (see FIG. 2) it has a corresponding contact surface 16 with a second projection 17 to form side grips of the first projection 14.

In the state in which the sleeve piece 7 is closed in FIG. 3, it is shown that the second protrusion 17 has a rear grip on the first protrusion 14, thus completing the locked state. The locking state can only be loosened by a pin, which means that the two protrusions 14, 17 move away from each other so that relative movement takes place and at the same time the sleeve piece 7 is connected to the outer circumferential wall of the tubular sleeve 1. It is inserted into the recess 13 in a radially inclined manner from 4). In this position, the corresponding corrugated pipe is held only by the blocking protrusion 11 of the second locking tongue 8. By operating the lever arm 12 the corrugated pipe is finally separated.

5 shows a perspective view of an embodiment of a third safety coupling according to the invention in the form of a coupling angle which can be flanged.

The safety coupling shows an angled tubular sleeve 1, which has an open end for receiving a corrugated pipe. In addition, there is one blocking protrusion 5 which is rigidly arranged on the outer circumferential wall 4 of the sleeve 1 in the state in which the sleeve piece 7 is closed. The sleeve piece 7 is coupled / jointly connected to the sleeve 1 by an integrated hinge 18. The blocking protrusion 5 is arranged inclined forward in the radial direction from the outer circumferential wall 4 of the tubular sleeve 1 by means of the integrated hinge 18 in the sleeve piece 7.

The blocking protrusion 5 is part of the locking unit 2a, which is arranged between the two recesses 3a, and two safety elements in the form of a wide material strip in the forwardly inclined sleeve piece 7. Bound by (6a). The outer tubular jacket profile 20 of the locking unit has a damping portion (not shown) in the longitudinal direction of the sleeve piece 7. The two material bands are attenuated by another slot-shaped recess 3b.

The safety coupling has a locking tongue 8 movably disposed in a recess 9 in the outer circumferential wall 4 of the sleeve 1 opposite the blocking protrusion 5, wherein the locking tongue 8 ) Is here associated with the sleeve 1 by means of the safety element 10 in the form of a material strip.

The tubular sleeve 1 has a circular backup ring 19 at the open leading end. The disengaging position of the blocking protrusion 11 is simple in that the locking tongue 8 has a lever arm 12 projecting from the safety element 10 in the axial direction over the open leading end.

The sleeve 1 also has a slot-shaped recess 13 which is designed in a hollow profile for receiving the sleeve piece 7.

In FIG. 6, in comparison with FIG. 3, a partially tubular (here over the length of the sleeve piece 7) of the locking unit 2a is additionally shown. In plan view, this is shown relatively thin, since the corresponding material attenuation spans the entire length.

7 and 8 respectively show longitudinal cross-sectional views of an embodiment of a fourth safety coupling according to the invention.

The locking tongues 2, 8 are designed in the form of a band in each case in the recesses 3, 9 by means of the safety elements 6, 10 in this position and radially springable to the sleeve 1. ) Is combined. In the embodiment as shown in FIG. 8, the locking tongue 2 has in each case two elliptical recesses 21. In Fig. 9 four blocking protrusions 5a, 5a ', 5a ", 5a"' are shown in radial plan view for fitting into the outer circumferential groove (waveform line) of the corrugated pipe. In FIG. 8 a dome-shaped connecting strip 22 can be shown in a stationary state, which is designed to prevent the limitation of excessively wide radial turns.

In FIG. 10 a longitudinal view of an embodiment of the disassembly tool is shown, and in FIG. 11 a radial plan view of an embodiment of the disassembly tool is shown. The dismantling tool comprises two half covers 23, which are joined by three hinge-like strip-like connecting elements 24, where one half cover 23 is the outer surface of the half cover 23. It has a locking tongue 25 which fits into the corrugated trough of the corrugated pipe by a switch face 26 located thereon and by a mild pressure action.

Thus, the safety coupling for the corrugated pipe according to the invention as described above can loosen the previously fixedly positioned corrugated pipe in an uncomplicated manner only with the aid of a tool, so that the corrugated pipe is unintentionally positioned. There is an effect of preventing the sliding off from.

Claims (13)

At least one first lock movably disposed in the tubular sleeve 1 having an open end for receiving a corrugated pipe and in a first recess 3 in the outer circumferential wall 4 of the sleeve 1. It has at least one blocking protrusion 5, 5 ′ for fitting the tongue 2 to the outer groove of the corrugated pipe, wherein the locking tongue 2 with respect to the sleeve 1 is at least one. It is connected to the sleeve 1 by a safety element 6 and can slide radially with a spring effect, the blocking protrusions 5, 5 ′ being moved to a separate position outside the fitting with grooves of the corrugated pipe. In the possible safety coupling for corrugated pipe, The locking tongue 2 is arranged in the sleeve piece 7 which is inclined radially forward from the outer circumferential wall 4 of the tubular sleeve 1 by means of an integrated hinge 18, The safety coupling is at least one second locking tongue 8 movably disposed in a second recess 9 in the outer circumferential wall 4 of the sleeve 1 opposite the first locking tongue 2. And the second locking tongue 8 is joined by at least one safety element 10 which is not designed with an integrated hinge with respect to the sleeve 1, the tubular sleeve 1 having an open inlet end. At least one elliptical backup ring 19 in the region of the sleeve piece 7, the second locking tongue 8 protruding over the safety element 10 in the axial direction over the open leading end. Safety coupling for corrugated pipe, characterized in that it has a lever arm (12). Safety coupling for corrugated pipe with tubular sleeve 1 having an open end for receiving corrugated pipe and at least one blocking protrusion 5, 5 ′ for fitting into corrugated groove of the corrugated pipe To The blocking protrusions 5, 5 ′ are arranged in an inclined sleeve piece 7 radially forward from the outer circumferential wall 4 of the tubular sleeve 1 by means of an integrated hinge 18, The safety coupling is at least one locking tongue 8 movably disposed in a second recess 9 in the outer circumferential wall 4 of the sleeve 1 opposite the blocking protrusions 5, 5 ′. The locking tongue 8 is joined by at least one safety element 10 which is not designed with an integral hinge with respect to the sleeve 1, the tubular sleeve 1 being at least at the open inlet end; In the region of the sleeve piece 7 there is one elliptical backup ring 19, the second locking tongue 8 protruding over the safety element 10 in the axial direction over the open leading end ( Safety coupling for corrugated pipe, characterized in that it has 12). In the safety coupling for corrugated pipe having a tubular sleeve (1) having an open end for receiving corrugated pipe and at least one blocking protrusion (5) for fitting to the outer groove of the corrugated pipe, The blocking protrusion 5 is arranged in the sleeve piece 7 which is inclined radially forward from the outer circumferential wall 4 of the tubular sleeve 1 by means of an integrated hinge 18, where the blocking protrusion 5 is provided. Is a part of the locking unit 2a which is arranged between the two recesses 3a and is coupled to the sleeve piece which is inclined forward by two safety elements 6a, the locking unit being the sleeve piece 7 Has an outer and / or inner partial tubular sheath profile 20 having at least one attenuation in the longitudinal direction of The safety coupling is at least one locking tongue 8 movably disposed in a second recess 9 in the outer circumferential wall 4 of the sleeve 1 opposite the blocking protrusions 5, 5 ′. And the locking tongue 8 is joined by at least one safety element 10 which is not designed with an integral hinge with respect to the sleeve 1, the tubular sleeve 1 at the open inlet end being at least A lever arm having one elliptical backup ring 19 in the region of the sleeve piece 7, the second locking tongue 8 protruding over the safety element 10 in the axial direction over the open leading end. Safety coupling for corrugated pipe characterized by having (12). The method of claim 3, wherein Safety coupling for corrugated pipe, characterized in that at least one said safety element (6a) has at least one further recess (3b). The method of claim 1, The locking tongue 2 is designed to be conical tapered in a direction away from the blocking protrusion 5 and / or the second locking tongue 8 is circular in a direction away from the blocking protrusion 11. Safety coupling for corrugated pipe, characterized in that it is designed to be tapered with tracking. The method of claim 2 or 3, The locking tongue (8) is characterized in that it is designed to taper conically in a direction away from the blocking protrusion (11). The method according to any one of claims 1 to 6, Said sleeve (1) has a slotted hollow profile recess (13) for receiving said sleeve piece (7). The method of claim 7, wherein The slot-shaped recess 13 has a contact surface 15 forming a first projection 14 in the hollow profile of the recess 13, the free end of the sleeve piece 7 being the sleeve piece. Safety for corrugated pipes, characterized in that it has a corresponding contact surface 16 with a second projection 17 to achieve a back grip of the first projection 14 when 7 is locked by the sleeve 1. Coupling A tubular sleeve 1 having an inlet end open for receiving a corrugated pipe, and at least one first lock movably disposed in a first recess 3 in the outer circumferential wall 4 of the sleeve 1. It has at least one blocking protrusion 5a, 5a 'for fitting the tongue 2 to the outer groove of the corrugated pipe, wherein the locking tongue 2 is at least one relative to the sleeve 1. It is coupled to the sleeve 1 by means of a safety element 6 and can slide radially with a spring effect, the blocking protrusions 5a, 5a 'being moved to a separate position outside the fitting with the groove of the corrugated pipe. In the possible safety coupling for corrugated pipe, The safety coupling has at least one further locking tongue 8 radially movable in another recess 9 in the outer circumferential wall 4 of the sleeve 1, the further locking tongue (8) is coupled by at least one further safety element (10) with respect to the sleeve (1), all safety elements having a band-shaped design, all locking tongues being in a direction away from the blocking projection Having a tapered design with a trace, wherein at least one locking tongue is connected to the sleeve 1 in the radial direction by at least one dome-shaped connecting strip 22 in the rest position and defined within the pivoting movement. Safety coupling for corrugated pipe The method of claim 9, Said safety coupling having at least three locking tongues. The method according to claim 9 or 10, Said safety coupling having at least four locking tongues. The method according to any one of claims 9 to 11, At least one said locking tongue has at least one recess (21). 13. A disassembly tool, comprising a safety coupling according to any one of claims 9 to 12, and a disassembly tool, which grips around the hose during disassembly and extends longitudinally between the corrugated pipe and the safety coupling. Have two half covers 23 that can slide, can be assembled with each other, or can be swung by at least one connecting element 24 similar to a hinge, wherein at least one Two half covers (23) have at least one locking tongue (25) with radial pivoting motion.