DE1983938U - TRAILER COUPLING FOR MOTOR VEHICLES. - Google Patents

Description

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Patent attorneys Dipl.-Ing. F. Weickmann, Dr. Ing.A.Weick.mann

DiPL.-InG. H.WeICKMANNj D1PL.-PHYS. Dr.K. FlNCKE

Dipl.-Ing. F. Ä.Weickmann, Dipl.-Chem. B, Huber

8 MUNICH 27, DEN

MÖHLSTRASSE 22, CALL NUMBER 483921/22

Company Johann Eoekinger? 8 MiiB.Glie.iis, Orleansstrasse 12

Trailer coupling for motor vehicles ".

The control "relates to a trailer coupling for motor vehicles," comprising a coupling head for tie mounting © the \. "Drawbar eye of a trailer as well as a drawbar eye anchoring the coupling head, between a" coupling position and a BntlEupplungsstellung versGhie ¥ bare.n. Steekbolze.n _s which; is secured in the coupling position against unintentional release of the towing eye by a locking member provided on the coupling head. -....- ■ - __

In such couplings, in which the locking pins operated by hand / it is often desirable to BteekbolEen against an outright! "Eyelet to secure the Kapplungskopf" In particular, this is not desirable for the couplings, in which the Steekbolzea from Eaumgründen from above can be inserted and "withdrawn5 but is operated from below» - '■ "". .-. ■

Such bolts are often secured against unauthorized removal by means of a chain on the coupling head. Such chains are, however, not always provided and also not very practical because the Steekbolzen attached to a chain dangles freely from the vehicle in the Eatkupplungssta & ä

Object of the present! Inflation is therefore to create a Amhängerkupplung where the manually operable locking pins aueh is secured in uncoupling so, are that the above aehteile! Avoided *

To solve this problem, the trailer coupling of the type mentioned is characterized in that a second locking member is provided on the coupling head , which secures the socket pin in the Eatkupplungsstellung against loosening from the coupling head, but does not hinder its pushing back into the coupling position. . - ■ ■ -. - -

The new coupling can be formed by a plate which is used for fastening to the vehicle frame, from two flanges protruding from the fastening plate, together forming the coupling head, each provided with a through-hole for the plug-in bolt, of which one which carries one of the coupling position of the plug-in pin associated with the blocking member and the other is associated with the uncoupled second locking organ in JT.orm against the "effect of a Sückstell force displaceable locking pin which, in the unloading

Coupling position of the stud bolt in a provided on this © Locking groove engages.

It is conceivable that the locking pin is essentially in a bucket running perpendicular to the axis of the through-opening, with the Durehsteoköffsung associated bore of the corresponding The flange of the coupling head is housed ο

By this kind of dex 'accommodation of the locking pin on the coupling = head, the appearance of the coupling is not disturbed and the locking element itself is largely protected from damage

It is possible * that the locking pin, on its from the socket pin The remote end carries a sundial, against which the locking pin is placed under gate tension: a visual compression spring supported - ■ -..-. .

By providing this end disk, it is possible to assign a locking pin _9, which is relatively small in diameter, with a sufficiently large reset element 9, such as a compression spring. This is possible in particular ₉ that the end plate is larger in diameter than the locking pin and is accordingly housed in an enlarged bore section «'

In a preferred embodiment of the fire is the extended section of the locking pin bore with an approximately perpendicular to the »longitudinal axis of the locking pin extending opening in the bore wall connected at a point" which in

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the Außerfunktio & sstellung the locking post ens, "is a result of Steekbolzea of join, before Bndscheibe the locking post © as it is possible to, for example, insert the Steekbolzen alone the coupling head to remove" One need "when pushed back locking pin only a screwdriver into this hole so that this engages behind the end disk of the locking pin and prevents the locking pin from snapping into the locking groove φ

Appropriately , the locking groove of the steek bolt. When the locking pin is engaged and viewed in the lens-breaking direction of the locking pin , on its side lying behind the locking pin, there is a conical run-up surface . When the steering pin is pushed out of the uncoupling position into the coupling position, the pushing back of the locking pin out of the way =. Functional setting causes ο

It is possible that the locking groove on its conical. Contact surface opposite side has a substantially perpendicular to the longitudinal axis of the Ste.ekboil3.ens- Anschlag-- 'surface. This stop surface acts in the coupling position with the locking member there . Senses- a locking of the Steokbolzens together. - ■■ '"

It is also conceivable that the plug-in bolt is designed as a handle at one end and is rounded at the other, free end .

The rounded free drawer allows "with the lias chi just of the Steofcbolzeas in the coupling position an evasion of the locking element, which then engages in the locking groove on the bath of the lens slashing movement of the fSteolcbolens due to the effect of a leather"

The enclosed figures explain the masonry «Ss represent dars

lig. 1 shows a .new coupling in side view and partially cut with in coupling position = borrowed Steolcbolgen »

Fig »2 The" coupling of the I ¹ ig. 1 in plan view "- - ..;

ligο 5 a rope view of the coupling of the Figo Ί, with the coupling position in bat and only partially shown bolt »

In the S * igo 1, a clutch according to the innovation is very generally: denoted by 10. § It has a mounting plate 12 which can be mounted on a vehicle frame by means of screws ο the mounting plate 12 are at a distance from one another and in mutual congruence ■ arranged. - ■ flanges 14 and 16 off? which take up a towing eye, not shown, of a trailer between them »Both flanges 14 and 16 are congruent

Steo openings 18 and 20, which by a Steekbolzen 22 are interspersed. In the lower end of Mg. 1, the plug » "Bolt a handle 24; the opposite end is mushroom-shaped rounded® Immediately below the mushroom-shaped Rounding can be seen a TJmfangsnut 26, in which one of a leather-pretensioned locking lever 28 engages »The circumference · = The groove has a soling surface at its upper end in FIG. 1 30 for the locking lever 28 and at the other end a conically downwardly widening ramp surface 52. The lock lever 28 is pivotably attached to the upper flange in FIG. 1 by means of a screw 34. A bolt 36 provides a limitation the pivoting movement of the locking lever 28 in both pivoting directions.

On the flange 16, which is lower in FIG. 1, one recognizes a bore 38 which opens into the throat opening 18 and runs approximately perpendicular to its longitudinal axis. a locking pin 40 is slidably inserted into this bore 38. The left ₉ rounded end of the locking pin 40 rests on the socket pin § the right end of the Spexx pin 40 carries a round end plate 41? which in an enlarged portion 42 of the bore 38y with the locking pin 40-. slidable, is guided. On the side of the end plate 41 opposite to the locking pin 40, a screw pressure spring 44 is supported, which has a cover 46 of the bore 38 as a counter bearing. "-.;-"

In FIG. 2, one recognizes the fastening plate 12 with holes 48 for fastening screws. Furthermore, one recognizes a spring 35, which cannot be seen in FIG. 1, for the locking lever 28.

The! "Ig» 3 shows the lower flange 16 in Fig «, 1 with the Durehsteoköffnuag 18 for the socket pin 22» This is in the uncoupling position, in which the locking pin 40 is locked into the locking groove 26 due to the action of the spring 44 » The inclined run-up surface 32 serves to / when pushing the Steekbolzens 22 back into the position according to Pig "1., ' push the locking pin 40 back into its bore 38" the to the longitudinal axis .des- "Steokbolzens. 22 vertical attachment surface 3D prevents - ".- that -. The socket pin 22 can completely fall out of the insertion opening 18 of the flange 16»

However, so that the socket pin 22 can be completely detached from the coupling if necessary, an opening 50 is provided in the widened cable of the bore 38 through which one can ind'der. Position "of the locking pin 40 according to FIG. 1, the end plate 41 can reach behind, for example by means of a screwdriver , so that the locking pin © - 40 can no longer engage in the locking groove 26.

Protection claims -

Claims (1)

Trailer coupling for motor vehicles, comprising buckets • Coupling head for receiving the towing eye of a trailer, as well as an anchoring the towing eye on the coupling head, between a coupling position and a satellite coupling position sliding socket pin, which in the Coupling position against an unintentional release of the towing eye through a locking member provided on the coupling head is secured, characterized in that a second locking member (40) is provided on the coupling head (10), which the . Locking pin. (22) in the uncoupling position against loosening from the coupling head, secures, his pushing back into the However, clutch position "not obstructed". 2. Trailer coupling according to claim 1, characterized in that it is formed by one for attachment to the vehicle frame serving plate (12), of two protruding from the mounting plate, together forming the coupling head with each a through opening (18,20) provided for the socket pin Hanschen (14,16-), one of which is the one The locking member (28) assigned to the coupling position of the socket pin (22) and the other that assigned to the uncoupling position second locking member (40) in the form of a locking pin which can be displaced against the action of a restoring force (44) carries j which in the uncoupling position of the plug = bolt engages in a locking groove (26) provided on this. Trailer coupling according to claim 2, characterized in that that the locking pin (40) running in a substantially perpendicular to the axis of the through opening (18) with the Through-hole connected bore (38) of the corresponding flange (16) of the coupling head is housed « Trailer coupling according to one of Claims 2 and 3, characterized in that the locking pin (40) on its from Steek bolt (22) at the remote end carries an end plate (41), against which sioh a locking pin (40) under gate tension supporting helical compression spring (.44) « Trailer coupling according to Claim 4 _P, characterized in that the end plate (41) is larger in diameter than the locking pin (40) and is accordingly accommodated in an enlarged bore section (42). 6 = trailer coupling according to claim 5 _S, characterized in that the widened section (42) of the locking pin hole (38) is connected to an opening (-50) in the wall of the hole running approximately perpendicular to the longitudinal axis of the locking pin (40) a place which is in the inoperative position of the - ■ Ί0 - Locking pin ens j seen from the stud bolt (22), in front of the The end disk (41) of the locking pin (40) is » 7 · Trailer coupling according to one of Claims 2 = 6, characterized in that j that the locking groove (26) of the plug-in pin (22) _s seen in an engaged lock pin (40) and in the direction of insertion the plug pin (22) on its behind the locking pin, lying side has a conical run-up surface (32) which, when the steekbolt is moved from the uncoupling position to the coupling © = position, causes the locking pin to be pushed back into its inoperative position ■ » Trailer coupling according to claim 7 , characterized in that the locking groove (26) on its side opposite the conical contact surface (52) is in the longitudinal axis of the plug-in pin (22). essentially vertical running face = surface (30) -has »- - Trailer coupling .after "one of the Steok bolts (22) on one End designed as a handle (24) and at the other, free The end is rounded ». . " 10. Trailer coupling according to claim 9; characterized in that the rounding _s extends up to the locking groove (26) "-