Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
  • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
  • H02G3/02—Details
  • H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
  • H02G3/0462—Tubings, i.e. having a closed section
  • H02G3/0468—Corrugated
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
  • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
  • B60R16/0207—Wire harnesses
  • B60R16/0215—Protecting, fastening and routing means therefor

Definitions

• the invention relates to a corrugated tube for the protective sheathing of electrical lines with a slot-shaped opening running along an antieil line, the edges of which form the slot and have closing devices which releasably close the slot.
• corrugated pipes in particular made of plastic, are known and are used especially in motor vehicle construction for the protective sheathing of the cable harnesses installed in motor vehicles.
• these corrugated pipes were designed to be closed, i.e. the electrical lines, mostly combined into cable bundles or cable harnesses, had to be threaded into these corrugated pipes.
• DE-OS 21 02 420 describes a corrugated pipe which has a slot for introducing the cable harnesses and is further provided in this area with an additional, smooth jacket tube which works exactly in the slot area, for example according to the tongue and groove principle Has closure.
• This closure runs continuously over the entire length of the slot and is provided with undercuts so that it cannot be easily removed. It is obvious that such a corrugated tube provided with an additional jacket tube is very complex to manufacture.
• a further disadvantage of these closure devices known from the prior art is that their respective closure parts have to be inserted and locked into one another without play, which means that these closure parts have to be connected to one another very carefully and also with exertion of force.
• the locking projection which is directed radially to the interior of the corrugated tube, must be pressed into the locking recess, which is also formed radially, with force and, of course, only from the outside on the corrugated tube or the locking projection no counter pressure can be exerted from the inside and thus the corrugated tube is deformed during the closing process and pressed against the cable strands encased in the corrugated tube.
• this closure device has the disadvantage that it protrudes beyond the outer radius formed by the wave crests of the closed corrugated tube and thus prevents, for example, the corrugated tubes from branching off or branching out of the cable harness from an adapter adapted to the wave crests can be.
• corrugated tube of the type mentioned above in that the corrugated tube is made of an elastic plastic material and the closure devices, as soon as pressure acts on the corrugated tube, first slide over one another and then hooked together to form a closure and, if no more pressure is exercised, are held in the closed position by the pressure introduced into the corrugated tube.
• This above-described design of the edges forming the slot of the corrugated tube ensures that the closing devices provided on the edges automatically connect to one another to form a permanent closure without direct force, for example in the form of pressure, being exerted on them, but only the corrugated tube, for example is pressed with the fingers until the closure has formed. If you let go of the corrugated pipe, it wants to deform back due to its elastic design and this deformation is prevented by the hooking of the closing devices, whereby the closure holds. Based on these
• Training it is also possible to put the closure out of operation again by correspondingly compressing the corrugated tube and to open the slot.
• the corrugated tube advantageously has an elliptical cross section in the unlocked state, that is to say in its original production state, the slot being provided in the cross-sectional plane running centrally through the two focal points of the ellipse. Due to this elliptical configuration of the corrugated tube in the unlocked state, the sealing force is activated by the deformation of the corrugated tube in the closed position and by the inherent elasticity of the corrugated tube made of plastic.
• the elliptical corrugated tube has a circular cross section in its closed shape.
• corrugated tube ensures that the connection of the ends of such corrugated tubes in branching or branching areas of a wiring harness can be carried out by means of double-shell and foldable adapters, which are each adapted to the circular diameters of the corrugated tubes to be connected and mostly rib-shaped projections protruding into the interior have, which then hold in the troughs of the corrugated pipes to be connected.
• the closing device is formed on the one edge forming the slot-shaped opening as a channel running over its entire length and open to the outside, and the closing device on the other edge is designed as a channel running over its entire length and open to the inside of the tube.
• These channels which are each open in the opposite direction, engage in one another when the corrugated tube is pressed together, and thus form a hook over the entire length of the slot when no more force is exerted on the corrugated tube.
• the opposite walls of the two channels advantageously run in an approximately radial direction.
• the wall of the gutter that is opposite the other wall is bent in the form of an oblique extension to the tube interior and forms a sliding surface for the opposite wall of the gutter open to the inside of the pipe.
• This special design of the wall of the one channel, which forms a sliding surface ensures that the edges forming the slot can be pressed against one another in a simple manner to close it, the one edge sliding over the other and then forming the opposite walls of the channels, hooking into each other, so to speak, a continuous closure.
• the channel open to the outside is larger in cross-section than the thickness of the radial wall of the other channel protruding into it in the closed state, so that the wall of the other channel protruding into this channel open to the outside can slide into it without constraint , solely because of the elasticity of the corrugated pipe.
• the wall of the channel open to the outside is advantageously less high than the wall of the channel open to the inside of the pipe.
• a partial top view and four cuts on or through the freshly extruded and shaped but not yet slotted corrugated tube namely: a) a partial top view of the sealing area of the corrugated tube, b) a section along line BB in FIG a, c) a section along line CC in Fig. a, d) a section along line DD in Fig. b, e) a section along line EE in Fig. b and f) a section along line FF in Fig. b ,
• the corrugated tube 1 shown in FIGS. 2 and 3 and the respective partial views and sections, made of a plastic and having wave crests B and wave troughs T, has a slot 2 in the vertical cross-sectional plane drawn in the cross sections over the length of the corrugated tube, which is cut into this area after the production process of the corrugated tube, that is to say after the extrusion and shaping of the plastic tube into a corrugated tube, shown in FIG. 1.
• the incision creates a slit-shaped opening in the corrugated tube 1, the edges 3 and 4 of which form the slit 2 and 4 have closing devices 5 and 6, which are suitable for releasably closing the slit 2.
• the corrugated tube 1 is, as shown in FIGS. 1 and 2, weakly elliptical and the vertical diameter plane V running through the slot lies centrally between the two focal points of the ellipse, which are close together and are not shown in the figures.
• the closing device 5 shown in FIGS. 1b and 1c and 2b and 2c on the left side of the diameter plane V is designed as a channel 7 open to the inside of the pipe and the closing device 6 shown on the right side of the diameter plane V in these figures is shown as a rear gutter 8 open on the outside, each having opposite and radially formed walls 9 and 10, which, as shown in FIGS. 3b and 3c, come to rest against one another with their rear sides when the corrugated tube 1 is closed.
• the hooking of these walls 9 and 10 is achieved in that the corrugated tube 1 is pressed together, for example, with the fingers in the area of the diameter plane H, as a result of which the closing devices 5 and 6 move towards one another and interlock with one another.
• the wall 10 of the channel 8 which is open to the outside, has an extension 11 which is bent towards the inside of the tube and which forms a sliding surface 12 in the manner of an inclined plane.
• the wall 9 pushes against the sliding surface 12 and slides on the corrugated tube when it is compressed further, and then, as soon as the highest point of the wall 10 of the closing device 6 is reached, its rear side over the rear of the wall 10 slide over and to lie against this and thus get caught with this wall 10.
• the end of the wall 9 has a shoe 13 and the end of the sliding surface 12 also has a shoe 14, which face each other when the corrugated tube 1 is unlocked, so that the shoe 13 when Squeezing the corrugated tube overhangs the shoe 14 and thus ensures that the wall 9 slides onto the sliding surface 12.
• This slotted corrugated tube 1 which is designed according to the embodiment shown in the figures, can be produced in a simple manner, since it has no undercuts, in the extrusion process, that is to say in an inexpensive manner, the slit being able to be laid in a substantially wider range than in the prior art , and it is particularly easy to use as a protective tube enveloping the electrical lines of a wiring harness.
• the slit-shaped opening can be closed in a simple manner by pressing the corrugated tube 1 comprising the electrical lines to be protected with the fingers, the closing devices 5 provided on the respective edges 3 and 4 of the corrugated tube 1 forming the slot or 6 interlock.
• the wall 10 of the outwardly open channel 8 is formed less high than the wall 9 of the inwardly open channel 7, whereby the wall 10 with the sliding surface 12 in the closed state can stand in the inwardly open channel 7 so that the the outer diameter of the corrugated tube 1 formed in the slot region is not exceeded.
• the corrugated tube 1 which then has a circular cross section in its closed position with respect to its original elliptical cross section, can be received and held at its ends by adapters which are not shown and described in the context of this invention.
• the closed corrugated tube 1 can also be opened in a simple manner by deforming the corrugated tube 1 by pressing it.
• the corrugated tube 1 For this purpose, for example, only with the thumb in the direction of the vertical diameter V on the edge 4 downwards and with the fingers on the obliquely opposite side upwards, namely namely the locking device 5 or 6 and through which the corrugated tube 1 is released In its original elliptical shape, the spreading force then moves away from one another, and the closing devices 5 and 6 move away from one another, and the slot 2 can be opened successively in this way.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Details Of Indoor Wiring (AREA)
• Rigid Pipes And Flexible Pipes (AREA)
• Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
• Thermal Insulation (AREA)
• Pipe Accessories (AREA)

Priority Applications (6)

Applications Claiming Priority (2)

Publications (1)

Family

ID=7846895

Family Applications (1)

Country Status (8)

Cited By (2)

Families Citing this family (9)

Citations (3)

Family Cites Families (3)

• 1997
  • 1997-10-28 DE DE19747623A patent/DE19747623C5/de not_active Expired - Lifetime
• 1998
  • 1998-10-28 PL PL98334290A patent/PL334290A1/xx unknown
  • 1998-10-28 EP EP98956883A patent/EP0948833A1/de not_active Withdrawn
  • 1998-10-28 SK SK881-99A patent/SK88199A3/sk unknown
  • 1998-10-28 HU HU0001731A patent/HUP0001731A3/hu unknown
  • 1998-10-28 JP JP52326299A patent/JP2001507560A/ja active Pending
  • 1998-10-28 WO PCT/EP1998/006833 patent/WO1999022431A1/de not_active Application Discontinuation
  • 1998-10-28 BR BR9806723-0A patent/BR9806723A/pt not_active Application Discontinuation

Patent Citations (3)

Also Published As

Similar Documents

Legal Events