DE7819725U1 - Cable harness for motor vehicles or the like - Google Patents

Description

PATENTANWÄLTE DIPL.-ING. A. WEDDE? OIL-INIS. K.

Deutsche Bonk 65/22601 BLZ 70070010 Bayer. Hypobank 172002S006 bank code 700 200 07 Posisoheck Mohn. 473 02-803BLZ 7O0100 8O

ΘΟΟΟ MUNICH 8O Schumannstr. 2 - Tel. COBSJ 4715 47 Telegrams: Patentwedde - Munich

30 June 1978

File: Gm 23 548

company

Josef Schlemmer & Co '

Neumarkter Strasse 20

8000 Munich 80

Wire harness for automobiles or the like.

The innovation relates to a cable harness for motor vehicles or the like, with a reinforcement made of pipes and at least a dimensionally stable pipe connector, whereby pipes and pipe connectors go through one another insertable end sections are connected to one another.

The electrical lines laid in machines, apparatus and especially motor vehicles such as trucks and buses as well as in other large devices must be protected against external influences,

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be it mechanical or weather-related, protected will. For this purpose, it is known such electrical lines, which are usually combined into a so-called cable harness and frequently are already pre-assembled for the respective machine or vehicle type, to be drawn into protective tubes and then installed. Such cable ducts must correspond to the prefabricated Cables are cut to length and connected to one another using pipe connectors be. Pipe connectors can, for example, be simple, straight sleeves, curved elbows or multi-legged

Be branch pieces, which between the individual sections of the cable ducts to be built in.

It is known to use plastic cable conduits * preferably those made of polyamides, and those with pipe connections) with each other to connect, similar to how it is common in water pipe construction, it is necessary that the pipe ends with threads are provided and the pipe connectors at their end portions, respectively have a screw cap. A seal is also inserted into this screw cap, which then, after screwing on the screw cap on the pipe end, a tight connection is guaranteed.

Pipe connectors designed in this way require one compared to the current one Cable protection tube significantly enlarged diameter and therefore require a relatively large installation space. In particular, an additional

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Licher installation space is required for the operation of the screw caps, if Do not connect the cables to the cable ducts before they are installed and pipe connectors can be assembled.

Ier disadvantage, however, is that the lines through threaded through the closed cross-section of the pipe connector have to. This work is very time-consuming and therefore labor-intensive, especially when the lines are very long. In vehicle construction, for example with buses, trailers and articulated lorries Line lengths of 20 to 40 meters can certainly occur.

It is also known to use corrugated pipes as cable protection pipes, in particular those in which the ribs of the corrugated pipes are parallel to each other are arranged in planes perpendicular to the longitudinal axis of the tubes. This ensures that the pipe ends are not provided with a thread must be, but rather the pipe connectors have an external thread instead of the screw cap. A slit is then placed on the pipe ends resilient ring in the last or penultimate groove of the tubes locked into place and the attachment of the pipe end to the pipe connector achieved by a screw cap previously attached to the pipe ends and an inserted seal.

With pipe connections equipped in this way, the long electrical Lines not only through the pipe connector itself, the screw cap and the sealing ring, but also through the slotted, resilient one Be threaded through the ring. Furthermore, the requirement remains

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that the pipe connectors are each threaded at their end sections be provided.

The object of the innovation is to address the disadvantages mentioned above to avoid the production of cable harnesses, in particular the tedious threading and threading of the pipe connectors is unnecessary and make these pipe connectors themselves much easier and cheaper train so that separate screw caps, sealing rings and spring washers as well as the attachment of threads and the installation space are omitted to reduce.

In a wiring harness of the type mentioned at the outset, this object is achieved according to the invention in that the pipe connector consists of two shells is formed, the dividing joints are arranged substantially parallel to the or the longitudinal axis of the pipe connector and that the Pipe connector at its free end sections on the outer circumference essentially cylindrical with adaptation to the clear inner diameter of the associated cable ducts and of its end sections is embraced and held together on the outside.

The newly designed pipe connector is with its internal dimensions on the minimum space required for the connection or Junction points coordinated and required due to its double-shell Training inside no additional leeway that with closed cross | cut would be required for threading the cables. The outer one The space requirement of the pipe connector is less than that of the cable protection pipes itself. Rather, the end sections of the pipe connectors in the pipes to be connected

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pushed or inserted. This design inevitably results in the inner diameter of the pipes to be connected must be slightly larger than the inner diameter of the

closed cross-section

Pipe connector. This also results in that for those in the the electrical lines to be pulled in there is more clear space available than in the pipe connectors. Especially with very long cable duct ?! this has an advantageous effect that the lines are simpler and with less friction are to be withdrawn.

Another advantage results from the fact that with a correspondingly long Formation of the end sections of the pipe connector, the insertion length of the end sections into the pipes can be variable and thus a certain amount Length compensation is possible.

In an advantageous further development, the dividing joints forming Separating edges of the pipe connector connecting elements. The connecting elements are preferably designed in the manner of tongue and groove, the separating edges of one shell part having the grooves and the separating edges of the other shell part having the tongues. This ensures that the two shell parts of a pipe connector can not move against each other, so that it too possible changes in cross-section, especially in the case of branches, and the protective effect is retained.

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jl In a further advantageous embodiment are the connecting elements

Continuously running over the entire length of the separating edges educated. In this way it is achieved that the parting lines are particularly tight with one another after the two shell parts have been assembled

§ are connected and thus the lines at the connection points

or branch points to prevent the ingress of dirt and moisture are protected.

H In an advantageous development, the connecting elements have close to the

Insertion end of the respective end sections at least on one side the separating edges of the shells have interruptions, which are similar to a Interlocking teeth when assembling the shells. These Interruptions in the connecting means, so that this is missing on a short piece of the spring and on the corresponding other side of the shell a piece of the groove is missing, leaving the gap in the tongue when assembling of the shells engages in the piece of the filled groove like a toothing. This allows the shells to move against each other assembling the pipe connector with the cable ducts and also prevented in the event of other shear stresses that may occur during operation.

Furthermore, the shells have at least one of the angles between the branching end portions on a locking means, wherein the lower shell has a blind hole and the upper shell has a complementary one Spigots that interlock when the shells are assembled. This

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Blind hole / tenon locking means facilitate quick assembly of the two shells.

Are used as cable protection pipes, wave-shaped pipes, as they are also with the electrical installation are known from house construction, these are advantageously designed so that the ribs of the cable ducts designed as corrugated pipes parallel to each other are arranged in planes perpendicular to the longitudinal axis of the tubes. Furthermore, at least one of the shells of the pipe connector has their end sections have latching lugs which can be snapped into the ribs of the corrugated pipes.

By arranging latching lugs on the end sections of the pipe connectors, they are protected against being pulled out of the corrugated tubes after they have been inserted into the corrugated pipes by the latching lugs engaging in a groove. Also unscrewing of the pipe joint is excluded in the manner of a screw, there are the waves aer cable ducts not applied spirally.

In an advantageous further development, the locking lugs are designed as circular ring pieces, the plane lying perpendicular to the longitudinal axis of the pipe connector in the axial direction are slots on both sides of the locking lugs, the slit towards the center of the shell being wider than

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which is located to the insertion end and essentially corresponds in its width to the width of the locking lug and is the circular ring piece beyond the outer diameter of the shell and is beveled in the direction of insertion. !

The arrangement of the slots in front of and behind each locking lug ensures |

ensures that when the pipe connector is inserted into the end |

a corrugated pipe can yield elastically and especially before the I.

Cancel is slotted. The fact that the behind the locking lug to the |

The slot in the middle of the shell is wider than the one at the insertion end |

is located, it is also achieved that the locking lug essentially |

borrowed yielding during the insertion process, but in different 1

opposite direction of movement is almost unyielding. |

That which protrudes beyond the outer diameter of the shell, the actual |

The circular ring piece forming the locking lug is removed in the direction of insertion inclined and thereby acts according to the principle | during the insertion process

J the inclined plane, so makes the insertion process much easier. |

A non-limiting embodiment is shown in the drawings I. shown. |

It show i

iQ- 1 a ready-to-install., cable protection pipes and various Cable harness containing pipe connectors in a schematic representation;

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FIG. 2 is an enlarged representation of an illustrated in FIG. 1, formed as a branch piece, located in the installed state pipe connections, with the Ent sections of the Cable protection tube «are shown partially cut open;

Fig. 3 is a plan view of the inside of the lower shell part of the pipe connector according to FIG. 2 with the representation of the

End sections provided locking lugs, \

ί Fig. 4 is a view of both, not interconnected

The shell parts of the pipe connector from the side of the end

section ago,

Fig. 5 is a section according to V-V in Fig. 1, Fig. 6 is a section according to VI-VI in Fig. 1, 7 shows a section according to VII-VII in FIG. 1, FIG. 8 shows a section according to VIII-VIII in FIG. 1, 9 shows a section according to IX-IX in FIG. 1 and FIG. 10 shows a section according to X-X in FIG. 1.

11 is a perspective view of the end section 7.

In Fig. 1 is the part of a cable harness for motor vehicles or the like

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shown, much more of a reinforcement made of pipes and surrounding the lines /

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differently shaped, these pipes interconnecting dimensionally stable Has pipe connector. Shown is a Y-shaped pipe connector 1, an arched pipe connector 2, a cross-shaped pipe connector 3, a right-angled pipe connector 4 and one similar to the pipe connector 1 Pipe connectors 5. Between these pipe connectors, the electrical

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Lines / protected by cable ducts 6, which are cut to length according to the distances between the individual pipe connectors. These cable protection pipes can be dimensionally stable as well as flexible, for example made from hoses.

Fig. 2 shows the enlarged view of the Y-shaped pipe connector 1 with different sized cross-sections of the individual end sections 7, 8 and 9. These end sections are inserted ^{into the cable ducts 6 1} , 6 "and 6" ^{1, which also have a correspondingly adapted different diameter.} The protective cable pipe 6 'is designed as a corrugated pipe, the rings 10 of the corrugated pipe 6 ¹ resting directly on the end section 7 of the pipe connector acting like individual sealing rings. The end sections 7, 8 and 9 of the pipe connector 1 can

be inserted differently deep into the cable ducts and thus is a limited length compensation between the cable ducts to be connected possible.

Figures 3 and 11 show the two-part design of the pipe connector 1, which from the upper shell enteil 1 a and ^ em lower Shell part 1 b consists. The dividing line 11 between the two Shells 1 a and 1 b is in this Ausföhrungsbeispiel in that

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Diameter plane located, which all three longitudinal axes of the pipe connector contains. The abutting separating edges 12 of the upper Shell part 1 a and 13 of the lower shell part 1 b have connecting elements on, the connecting element 14 on the upper shell part 1 a as a spring, the connecting element 15 on the lower shell part 1 b is designed as a groove. These fasteners are all over the place Length of the separating edges continuously formed. In the figure, the continuous groove 15 is at the separating edge 13 of the lower shell part 1 b shown.

Near the respective insertion end of each end section 7, 8 or the springs 14 and the grooves 15 are interrupted at least on one side of the separating edges 12 and 13 of the shells 1 a and 1 b. Both Springs 14 is missing a short distance and thus forms the interruption 14 ', in the case of the grooves, a short piece of the length corresponding to the interruption of the tongue 14 'is so filled with material that the interruption 15 'is created. When the two shell parts are joined together, the interruptions 14 'and 15' act like toothings and lock the shell parts in such a way that they cannot be moved longitudinally relative to one another are.

Furthermore, the shell parts 1 a and 1 b have a locking means, which facilitates quick and accurate assembly. It is in the lower shell enteil 1 b at an angle between the two end sections and 9 a blind hole 21 is provided. Complementary to this, the upper Scarf enteil 1 a also in its angle between the end sections

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and 9 a pin 22 which engages positively in the blind hole 21 when the two shell parts 1 a and 1 b are assembled.

The so provided with tongue and groove separating edges of the dividing joint 11 of the pipe connector allow an exact joining of the two scarf enteile 1 a and 1 b after inserting the electrical lines and at the same time ensure that the electrical lines before the _Λ

Ingress of dirt and moisture are protected. |

i These pipe connectors assembled in this way, regardless of which geometrical one

Form, are then inserted with their end sections into the cable ducts to be connected. The diameters of the end j

I cut, in the case of the pipe connector 1, the end sections 7, 8 and 9 I matched the inside diameter of the cable ducts I to be connected, that sufficient adhesion is achieved and pulling out! or traps is avoided. i

To ensure even better cohesion, the End sections of the pipe connector locking lugs are provided, which in the Ribs of the cable ducts designed as corrugated tubes can snap into place. In the figures 3 to OK these locking lugs are in different Views shown.

Before the opening end of each end section 7, 8 and 9 of the pipe connector 1 a circular ring-like locking lugs 16, 17 and 18 are provided at a small distance in the lower shell part 1 a. Such resting

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Noses could also be present in the upper shell part 1 a, but this is not absolutely necessary.

Between the opening end of the respective end section and the locking lugs 16, 17 and 18 a narrow slot 19 is arranged! which is not absolutely necessary. Behind the locking lugs to the middle a much wider slot 20 is arranged towards the pipe connector. These two slots give the locking lugs a sufficient one Elasticity and mobility, so that this when inserting the Tube connector in the ends of the cable ducts without excessive stress can give in. In the direction of insertion, the locking lugs 16, 17 and 18 are designed similar to an inclined plane, which also easy insertion into the pipe ends is guaranteed. on the other hand This design of the locking lugs means that the pipe connector can only be pulled out of the protective cable pipes with great force possible.

In addition to the pipe connector 1 described above, also in The pipe connector forms 2, 3, 4 and 5 shown in FIG. 1 are designed similar to the pipe connector 1, apart from their geometric shape. With regard to the end sections of the remaining pipe connectors, these are also provided with locking lugs on the lower part of the shell. Such Pipe connectors can be designed depending on the geometric requirements will.

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Claims (1)

30 June 1978 File: Gm 23 548 EXPECTATIONS. 1.) Cable harness for cable protection pipes with two or more connection legs, the end sections of which are designed as plug connections for the pipes, characterized in that the pipe connector (1, 2, 3, 4 or 5) consists of two shells (la, Ib; 2a, 2b; 3a, 3b; 4a, 4b or 5a, 5b), the dividing joints (11) of which are arranged essentially parallel to the longitudinal axis (s) of the pipe connector, that the pipe connector at its free end sections (7, 8 or 9) on the outer circumference is essentially cylindrical with adaptation to the clear inner diameter of the associated cable protection pipes and is surrounded by their end sections (6 ¹ , 6 ") on the outside and held together. 2.) Cable harness according to claim 1, characterized in that that the dividing joints (11) forming the separating edges (12 or 13) of the pipe connector have connecting elements (14 or 15). 3.) Cable harness according to claim 2, characterized in that that the connecting elements (14 or 15) are designed in the manner of tongue and groove, the separating edges (12) of one shell part (la, 2a, 3a, 4a or 5a) have the tongues (14) and the separating edges (13 of the other shell part (Ib, 2b, 3b, 4b or 5b) have the grooves (15). -II- 781S725 I2.to.78 - II - 4.) Cable harness according to claim 2 and 3, characterized in that the connecting elements (14 or 15) on the the entire length of the separators (12 or 13) continuously are trained. 5.) Cable harness according to claim 2, 3 and 4, characterized in that the connecting elements (14 or 15) close to the insertion end of the respective end sections (7, 8 or 9) at least on one side of the separating edges (12 or 13) ) the shells (la, lb; 2a, 2b; 3a, 3b; 4a, 4b or 5a, 5b) have interruptions (16 ¹ or 15 ") which, like a toothing, mesh with one another when the shells are assembled. 6.) Cable harness according to one of the preceding claims, characterized characterized in that the shells (la, Ib; 2a, 2b; 3a, 3b; 4a, 4b or 5a, 5b) at least one of the angles between the branches. End sections (8 or 9) have a locking means, the lower shell (Ib, 2b, 3b, 4b or 5b) having a blind hole (21) and the upper shell (la, 2a, 3a, 4a or 5a) has a pin (22) which is complementary to the blind hole (21) and which, when the Interlocking shells. 7.) Cable harness for wave-shaped cable ducts, thereby characterized in that the ribs (10) as corrugated pipes formed cable protection tubes (6) parallel to each other in the longitudinal axis the pipes are arranged in vertical planes. -III- - Ill - ⁸ ) Cable harness ^{according to} claim 5, characterized signs that at least one of its bowls (Ib) is attached to theirs
End sections (7, 8 and 9) have locking lugs (18) which in the
Ribs (10) of the cable protection pipes (6) designed as corrugated pipes
are lockable. 9.) Cable harness according to claim 6, characterized in »that the locking lugs £ 16» .17 or 18) are designed as circular ring pieces, which in to the longitudinal axis of the pipe connector
perpendicular planes lie that in the axial direction on both sides H / room 1 7819725 12.ia.7e of the locking lugs slots fl9, 20) are arranged, with the center | the shell (Ib) located slot (20) wider than that to the plug-in | end located slot (19) and essentially in its width 1 corresponds to the width of the locking lug and j that the circular ring portion is above the outer diameter of the shell hinaus- \ and is tapered in setting-eckHchtung.