Pipe joints or couplings – Adjustable angle
Reexamination Certificate
1999-05-18
2001-09-04
Luu, Teri Pham (Department: 3627)
Pipe joints or couplings
Adjustable angle
C285S179000
Reexamination Certificate
active
06283510
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates to an angle shaped line entrance with two branches situated at an angle relative to each other for the entrance and/or attachment of oblong structures, for example of electrical lines, cables or hoses, at an angle in, through or on a wall or a housing, such that the oblong structure runs slanted or parallel to the surface of the wall and in particular, enters at approximately at a right angle or slanted into it and such that in the angular area of the angle shaped line entrance, a disconnect is provided between the two branches so that the two branches are connected on the outside of the angle formed by them so that they can be swung and/or detached, and they can be detachably coupled on the inside of the angle.
An angular line entrance of this general type is known from German Patent DE34 03 772C2. This previously known line entrance has the advantage that a rigid angular line entrance can be constructed with branches that are arranged fixed relative to each other, i.e. an exactly predetermined angle is maintained. In spite of this, however, the introduction of the cable is made easier in that the angle branches can be folded or brought into a position in approximate alignment to each other. Thus by the arrangement of the two branches at the predetermined angle, transverse forces can also be received. Especially oblong structures, which completely or almost completely fill the inner cross section of this angular line entrance, can be inserted when the branches are first folded apart or opened, and after that the angle branches are brought into their angular position and coupled into position. This coupling of the two angular branches can, however, not be opened again or only opened again with difficulties and under certain circumstances, by destroying them, so that though the assembly and introduction of the oblong structure is made easier, disassembly is not possible or only possible by destroying the angular line entrances, so that it becomes unusable after such a disassembly.
SUMMARY OF THE INVENTION
Therefore the object of the invention is to create an angular line entrance of the above-named type, which has the advantages of the simple assembly for somewhat aligned branches, however, also then allows a simple disassembly without destroying the line entrance. Especially, simultaneously the handling of the coupling of the two branches on the one hand and the clamping of the oblong structure on the other hand, on the branch of the line entrance facing away from housing or the wall, should be simplified for the user.
In order to solve this apparent contradictory task, the angle shaped line entrance having two branches that are at an angle to each other is characterized in that on or in a first branch that is spaced at a distance from the wall or the housing, a clamp or clamp insert for the oblong structure, which can be adjusted by an activation component, and a coupling part for connecting to the second branch in a manner that can be detached are provided, and that the activation component and the coupling part are in such an effective connection that the activation of the activation component for the attachment of the clamp or the clamp insert to the oblong structure also activates the coupling part for connecting the two branches.
Thus, on the first leg of the angle shaped line entrance, any desired clamping device that is known from the state of the art can be provided in the form of a clamp or a clamp insert, as are known for the attachment or for the strain relief on such oblong structures, especially on corrugated hoses or cables. In an expedient and advantageous manner, the activation of such a clamping device or an activation component present for it can thus simultaneously be used to create the coupling connection between the two branches of the angle shaped line entrance that are arranged at an angle to each other. Thus, the operation used for attaching or clamping the oblong structure automatically onto the reciprocal coupling, can be used for connection or locking of the two angle-branches. In this way, the handling of the locking or coupling on the one hand, and the attachment of the oblong structure or cable on the other hand, can be considerably simplified for the user. Furthermore, by this combining of the movement of the activation component for the clamping operation and for the coupling, the possibility also results for not only releasing the oblong structure again in the reverse case during disassembly, but also again detaching the coupling between the two branches.
It is especially expedient therefore, if the activation component for the clamp or the clamp insert is connected with the coupling piece in a friction fit manner. In this way, the possibility occurs of moving the activation component even further in order to increase the clamping, even if the coupling position between the two branches has been achieved, such that during this additional movement, only the frictional force must be overcome. By an opposing movement, on the other hand, this friction fitting can also be used to detach the coupling between the two branches.
An especially favorable constructive embodiment of the angle shaped line entrance according to the invention can be characterized in that in or on the first branch that faces away from the wall or the housing, a clamp that can be deformed in the radial direction, or a radially deformable clamping insert, can be provided in order to attach the oblong structure in the area of this first branch and as an activation component for this, a rotating sheath or union nut is provided, and further at the transition or contact position between this first branch and the second branch, a sash-type lock is provided on the first branch as a coupling piece, that in the coupling position the grasps behind a projection, which is arranged on the second branch that can be connected to the wall or the housing and which functions as an opposing coupling piece, and that the sash-type lock and the rotating sheath or union nut are connected via a friction coupling in a friction fit manner so that when rotating the rotating sheath or union nut into its clamping position, the sash-type lock can be guided along into its coupling or locking position.
In this case, a clamp or a clamp insert is thus provided which can be deformed in the radial direction using a rotating sheath or union nut, i.e. through a screwing movement and conical surfaces that are known, clamping fingers of the clamp or the clamping insert can be deformed by the overlapping rotating sheath or union nut because of its axial movement even in the radial direction and pressed against an oblong structure or brought into contact on a corrugated hose, as is known in various forms from the state of the art for so-called cable screw connections or hose connections. In a constructively simpler and thus more advantageous way, the effective connection is achieved with the coupling piece for connecting the two branches in that a sash-type lock is provided, with which the rotating sheath or union nut is connected via a friction coupling in a friction-fit manner so that a sash-type lock of this type can be carried along in the rotational direction when clamping the oblong structure because of this friction fit, until the locking or coupling position is achieved. In an expedient manner, if necessary, the rotating sheath or union nut can be further rotated, however, in that only the frictional force on the one hand and the increasing clamping force, on the other hand, are overcome, if the attachment of the oblong structure requires an additional screw tightening of the rotational sheath or union nut. Vice-versa, it is sufficient to turn back the rotating sheath or union nut in the opposite direction in order to simultaneously bring the sash-type lock in to the open position via the friction fitting, i.e. to detach both branches from each other, when the oblong structure is also freed again from out of its clamping. Thus, a very simple and effective double
Adolf Jurgen
Bartholoma Mario
Gotz Volker
Zugel Fritz
Akin Gump Strauss Hauer & Feld L.L.P.
Anton Hummel Verwaltungs - GmbH
Luu Teri Pham
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