SE466995B

SE466995B - TRAILER COUPLING FOR MOTOR VEHICLE

Info

Publication number: SE466995B
Application number: SE8802067A
Authority: SE
Inventors: H Riehle
Original assignee: Oris Metallbau Kg Riehle H
Priority date: 1987-06-03
Filing date: 1988-06-02
Publication date: 1992-05-11
Also published as: SE8802067D0; NO882402L; DE3718552C2; IT1219631B; DE3718552A1; DK167432B1; SE8802067L; FR2616111B1; NL191982B; GB2205291B; DK294188A; GB8813046D0; NL191982C; BE1001407A4; NL8801138A; FR2616111A1; NO165228C; DK294188D0; IT8848036A0; NO882402D0

Description

466 995 den från ett första läge, i vilket den är formlàsande last vid regelbulten, mot en tryckfjäder kan tryckas till ett andra läge i vilket läsningen är Upphävd, men kugghjulets tänder dock ännu ej är i ingrepp med kuggstàngen och att detta ingrepp åstadkommas i ett tredje läge. 466 995 it from a first position, in which it is a form - locking load at the bolt, towards a compression spring can be pressed to a second position in which the reading is Canceled, but the teeth of the gear are not yet engaged with the rack and that this intervention is accomplished in a third position.

Med fördel kan axeln, vid den änden som ligger mittemot manöverhjulet eller handtaget, skjuta ut ur kulhalsen när axelns låsning med regelbulten är upphävd så att en synkontroll av läsningen är möjlig.Advantageously, the shaft can, at the end opposite the sprocket or handle, slide out of the ball neck when the axle locking with the bolt bolt is lifted so that a visual inspection of the reading is possible.

Om, enligt ett ytterligare särdrag hos uppfinningen, tapparna vid kulhalsen ingriper uppifrån i uppåt öppna ursparingar i den upptagande delen, kan medlen för automatisk fastspänning vara anordnade över tapparna i kulhalsen. I den man tapparna vid kulhalsen griper in nedifràn i nedåt öppna ursparingar, kan fastspänningsmedlen ligga under tapparna ivkulhalsen.If, according to a further feature of the invention, the pins at the ball neck engages from above in upwardly open recesses in the receiving part, the means for automatic clamping can be arranged over the pins in kulhalsen. In the man the pins at the ball neck intervene from below in the downward open recesses, the clamping means may be located below the pins in the ball neck.

Regelbulten och utlösningsstiftet kan vara anordnade parallellt med varandra. Vidare kan kulhalsen vara försedd med en tvärgående borrning vilken å ena sidan tillsammans med tapparna tjänar som upptagande del för bearbetningen, å andra sidan är lämpad för att kulhalsen efter borttagning kan fixeras medelst en skruv, t.ex. i fordonets bagageutrymme.The bolt and release pin can be arranged in parallel together. Furthermore, the ball neck can be provided with a transverse bore which on the one hand together with the pins serves as a receiving part for machining, on the other hand, is suitable for the ball neck after removal can be fixed by means of a screw, e.g. in the luggage compartment of the vehicle.

I ritningen visas uppfinningsföremalet i ett utföringsexempel. Här visar: Figur l en i en upptagande del insatt kulhals, i delvis skuren sidovy, figur 2 ett snitt genom släpvagnskopplingen enligt linjen II-II i figur l, figur 3 ett snitt genom den borttagna kulhalsen och figurerna 4, 5 och 6 snitt genom kulhalsen efter linjen IV-IV i figur 3.The drawing shows the object of the invention in an exemplary embodiment. Here shows: Figure 1 shows a ball neck inserted in a receiving part, partially cut away sidovy, Figure 2 is a section through the trailer coupling according to the line II-II in Figure 1, Figure 3 is a section through the removed ball neck and Figures 4, 5 and 6 are sections through the ball neck along the line IV-IV in figure 3.

Enligt figurerna 1 och 2 är exempelvis en upptagande del 2 fäst vid en tvärbalk l vid en personbils bakdel och i vilken en kulhals 3 med kopplingskula 4 är lösbart anordnad. Kulhalsens 3 ände är försett med ett kulforrnat omrade S, med vilken den nedifran är införd i en cylindrisk urtagning 6 i den upptagande delen 2. Kulhalsen 3 uppvisar vidare tva i sidled utskjutande tappar 7, vilka nedifrän anligger mot den upptagande delen 2 i nedåt öppna halvrunda ursparningar 8. I det för kulhalsen visade läget halles denna i den upptagande delen 2 medelst ett spännsystem vilket är anordnat i kulhalsen. Spännsystemet består väsentligen av en regelbult 9, vilken är anordnad i en borrning 10, och vilken, belastad medelst tryckfjädrar ll, med en konisk ände 12 tryckes mot en snedbana 13 i den upptagande delen 2. Ett 92 3 466 995 cylinderstift 14 tjänar som vridsäkring för regelbulten 9 i borrningen 10.According to Figures 1 and 2, for example, a receiving part 2 is attached at a crossbeam 1 at the rear of a passenger car and in which a ball neck 3 with coupling ball 4 is releasably arranged. The end of the ball neck 3 is provided with one ball-shaped area S, with which it is inserted from below into a cylindrical recess 6 in the receiving part 2. The ball neck 3 further has two laterally projecting pins 7, which abut from below against the receiving part 2 in downward open semicircular recesses 8. In the position shown for the ball neck is inclined this in the receiving part 2 by means of a clamping system which is arranged in kulhalsen. The clamping system essentially consists of a control bolt 9, which is arranged in a bore 10, and which, loaded by means of compression springs 11, with a conical end 12 is pressed against an oblique path 13 in the receiving part 2. A 92 3 466 995 cylinder pin 14 serves as a rotation lock for the control bolt 9 in the bore 10.

Regelbultens 9 bakre ände uppvisar en tandning utformad som en kuggstàng 15. I enlighet med figur 2 är ett utlösningsstift 17 anordnat i en borrning 16 i kulhalsen 3 parallellt med regelbulten 9, vilket belastas medelst en fjäder 18 men hålles mot denna fjäder medelst en kula 19 som ligger i en borrning 20 mellan regelbulten 9 och utlösningsstiftet 17 och vilken griper in i ett avsnitt 21 med minskad diameter i utlösningsstiftet. Kulan 19 halles i detta läge av regelbulten 9. Över regelbulten 9 och tvärs denna är en axel 23 lagrad i kulhalsen 3 i en borrning 22 och vilken medelst ett handtag 24 såväl kan vridas som även förskjutas i axelriktningen mot verkan av en fjäder 25. Axeln 23 är försedd med ett kugghjul 26 samt utrustad med en kolvartad del 27 med större diameter vid den ände som ligger mittemot handtaget 24. Axelns fria ände uppvisar ett avrundat huvud 28. Vidare är en tvärborrning 29 anordnad i kulhalsen 3 vilken tjänar till fästande av den lösgjorda kulhalsen vid förvaring. Dessutom tjänar den som upptagningsdel tillsammans med tapparna 27 vid bearbetning av kulhalsen. Utlösningsstiftets 17 främre ände är lagrad i en hylsa 30 och regelbultens 9 främre ände i en hylsa 31 med en bakom denna anordnad stötskyddsring 32. Hylsorna 30, 31 fixeras tillsammans medelst ett cylinderstift 33 (figur 1).The rear end of the bolt 4 has a toothing shaped like a rack 15. In accordance with Figure 2, a release pin 17 is provided in a bore 16 in the ball neck 3 parallel to the control bolt 9, which is loaded by means of a spring 18 but is held against this spring by means of a ball 19 which lies in a bore 20 between the control bolt 9 and the release pin 17 and which engages in a section 21 with reduced diameter in the release pin. The ball 19 is dropped in this position control bolts 9. Above the bolt 9 and across this, a shaft 23 is mounted in the ball neck 3 in a bore 22 and which by means of a handle 24 can both rotated which is also displaced in the shaft direction against the action of a spring 25. The shaft 23 is provided with a gear 26 and equipped with a carbon black part 27 with larger diameter at the end opposite the handle 24. Free shaft end has a rounded head 28. Furthermore, a transverse bore 29 is arranged in the ball neck 3 which serves to attach the loosened ball neck to storage. In addition, it serves as a receiving part together with the pins 27 when machining the ball neck. The front end of the release pin 17 is mounted in a sleeve 30 and the front end of the bolt 9 in a sleeve 31 with one behind it shock absorber ring 32. The sleeves 30, 31 are fixed together by means of a cylinder pin 33 (Figure 1).

När kulhalsen 3 är insatt i den upptagande delen 2 intar alla delar det läge som ses i figur 1 och 2, och vari axelns 23 kolvartade del 27 ingriper i en urtagning 34 i regelbulten 9. För lösgörande av kulhalsen tryckes axeln 23 sa langt in i kulhalsen att kugghjulet 26 ingriper i regelbultens kuggstang 15.When the ball neck 3 is inserted in the receiving part 2, all parts take over the position seen in Figures 1 and 2, and in which the carbon black part 27 of the shaft 23 engages in a recess 34 in the bolt bolt 9. To loosen the ball neck, the shaft 23 is pressed so far into the ball neck that the gear 26 engages the bolt 15 of the control bolt.

Genom svängning på 900 av handtaget 24 tryckas sedan regelbulten mot verkan av fjädrarna ll så långt tillbaka, att regelbulten gar fri från den upptagande delen 2. I detta läge faller kulhalsen ut ur den upptagande delen 2 och i detta ögonblick trycker fjädern 18 ut utlösningsstiftet 17 ur kulhalsen, så att kulan 19 tryckas in framför en avsats 25 i regelbulten. Medelst fjädern 25 löses ingreppet mellan kuggstangen 15 och kugghjulet 26. Axelns 23 huvud 28 skjuter ut ur kulhalsens omfång. Alla delar intar det läge som ses i figur 3.By turning 900 of the handle 24, the bolt is then pressed against action of the springs ll so far back that the bolt bolt goes free from it receiving part 2. In this position the ball neck falls out of the receiving part 2 and at this moment the spring 18 pushes the release pin 17 out of the ball neck, so that the ball 19 is pushed in front of a ledge 25 in the bolt. By means of the spring 25, the engagement between the rack 15 and the gear 26 is loosened. The head of the shaft 23 28 protrudes from the circumference of the ball neck. All parts assume the position shown in Figure 3.

Vid införande av kulhalsen 3 i den upptagande delen 2 stöter utlösningsstiftet 17 mot den upptagande delen 2. Utlösningsstiftet skjutes tillbaka och den av fjädrarna ll framåt tryckta regelbulten skjuter kulan 19 in i det inskurna avsnittet 21 hos utlösningsstiftet och lägger sig i fast- spänningsläge mot snedbanan 13, varvid axelns 23 kolvartade del 27 säkrande ingriper i urtagningen 34 i regelbulten 9. Axelns 23 huvud 28 försvinner i 466 995 kulhalsen som tecken för att fastspännandet är uppnått.When inserting the ball neck 3 into the receiving part 2, it strikes the release pin 17 against the receiving part 2. The release pin is pushed back and the bolt bolt pushed forward by the springs 11 pushes the ball 19 into the incised section 21 of the release pin and attaches to the tension position against the oblique path 13, the piston-shaped part 27 of the shaft 23 securing engages in the recess 34 in the bolt 4. The head 28 of the shaft 23 disappears in 466 995 the ball neck as a sign that the clamping has been achieved.

Axelns 23 enskilda lägen ses i figurerna 4 till 6. Läget enligt figur 4 motsvarar det i figur 2. Tänderna är ej i ingrepp och delen 27 griper in i urtagningen 24 i regelbulten 9. Figur 5 visar läget enligt figur 3 vid lösgjord kulhals och figur 6 visar ingreppet för tänderna vid tillbakaförande av regelbulten 9. Alltefter konstruktionssätt kan motsvarande snedbanor vara anordnade för regelbulten 9 och utlösningsstiftet 17 vid den upptagande delen. Det är också möjligt att anordna utlösningsstiftet 17 tvärs regelbulten 9.The individual positions of the shaft 23 are shown in Figures 4 to 6. The position according to Figure 4 corresponds to that in figure 2. The teeth are not engaged and the part 27 engages in the recess 24 in the bolt 4. The figure 5 shows the position according to figure 3 when loosened ball neck and figure 6 shows the engagement of the teeth when returning the the rule bolt 9. Depending on the construction method, the corresponding oblique paths can be arranged for the control bolt 9 and the release pin 17 at the pick-up parts. It is also possible to arrange the release pin 17 across the bolt 9.

För det fall att tapparna 7 vid kulhalsen 3 inhänges uppifrån i ursparingar vid den upptagande delen, anordnas spännsystemet över tapparna i kulhalsen på så sätt att regelbulten trycker tapparna 'uppifrån nedåt i ursparningarna.In the event that the pins 7 at the ball neck 3 are suspended from above in recesses at the receiving part, the clamping system is arranged over the pins in the ball neck in such a way that the bolt bolt pushes the pins' from top to bottom in the recesses.

Claims

466 995 PATENT REQUIREMENTS

Trailer coupling for motor vehicles, in particular passenger cars, which essentially consists of a receiving part fixedly attached to the rear of the vehicle and a ball neck with coupling ball which can be releasably attached to the receiving part and which ball-shaped end with its opposite coupling ball engages in a cylindrical area of the receiving part and abuts in a semicircular recess in the receiving part with laterally projecting pins and that further means are arranged thereon by means of which the ball neck when inserted into the receiving part is automatically clamped therewith by the pins being pressed in the direction of their receiving recesses. , characterized in that the means for automatic clamping of the ball neck (3) consist of a control bolt (9) mounted in the ball neck, which under the influence of compression springs (11) rests with pretension against an oblique path (13) at the receiving part (2). ), as well as one also stored in the ball neck, by means of a compression spring (18) loaded release pin (17), which in the case of a loose ball neck holds the bolt bolt in a retracted position and also when inserting the ball neck slides along a sloping surface in the receiving part or abuts it and thereby releases the bolt bolt so that it can assume its clamping position.

Device according to claim 1, characterized in that the control bolt (9) and the release pin (17) are in cooperating connection with each other by means of a ball (19) which is pushed in by the release pin in front of a shoulder (35) of the retracted the bolt and when the release pin is pushed back with the aid of the bolt (9), it is pushed into a cut-out section (21) of the release pin corresponding to this position, smaller in diameter. IN

Device according to claims 1 and 2, characterized in that a gear wheel (26) which can be driven by means of an operating wheel or a handle (24) is arranged which engages in a rack (15) at the control bolt for retracting the control bolt (3). ). in

Device according to claims 1 to 3, characterized in that the control wheel or handle (24) and the gear wheel (26) are arranged on a shaft (23) which is mounted longitudinally displaceable across the bolt so that it can be displaced from a position in which it is a form-loading load with the control bolt (9) against a compression spring (25) to a second position in which the reading is canceled, but the teeth of the gear (26) are not yet in engagement with the rack (15) and that this engagement can be effected in a third position. 466 995

Device according to claims 1 to 4, characterized in that the shaft (23), at the end opposite the operating wheel or the handle (24), projects out of the ball neck (3) when the lock of the shaft (23) with the bolt (9) ) is Repealed.

Device according to claims 1 to 5, with substantially vertical arrangement of the part of the ball neck insertable in the receiving part, characterized in that the pins (7) at the ball neck engage from above in upwardly open recesses (B) at the receiving part (2) and that the means for automatic clamping are arranged in the ball neck. g

Device according to claims 1 to 5, with substantially vertical arrangement of the part of the ball neck which can be inserted into the receiving part, characterized in that the pins (7) at the ball neck from below engage in downwardly open recesses (8). at the receiving part (2) and that the means for automatic clamping are arranged in the ball neck under the pins (7).

Device according to claims 1 to 7, characterized in that the control bolt (9) and the release pin (17) are arranged in parallel in relation to each other. _

Device according to claims 1 to 8, characterized in that the ball neck is provided with a transverse bore (29). ß RL