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1. WO2020117055 - ENSEMBLE DE SUSPENSION POUR SUSPENDRE UNE UNITÉ DE POST-TRAITEMENT D'ÉCHAPPEMENT À UN CHÂSSIS D'UN VÉHICULE UTILITAIRE À MOTEUR

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

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Claims

1. A suspension assembly for suspending an exhaust after treatment unit to a frame of a commercial motor vehicle, said suspension assembly comprising a suspension rod having a first part with a first end connected to a lower edge of the exhaust after treatment unit and a second part with a second end opposite the first end connected to a bracket of the frame, said suspension assembly further comprising a load force limiter arranged between the first end and the second end, said load force limiter comprising:

- a first piston having a first piston rod and a first piston flange, said first piston rod being connected to the first part of the suspension rod or forming the first part of the suspension rod;

- a second piston having a second piston rod and a second piston flange, said second piston rod being connected to the second part of the suspension rod or forming the second part of the suspension rod;

- a housing comprising a first end wall and a second end wall opposite the first end wall, the first end wall comprising a first opening for receiving the first piston rod, the second end wall comprising a second opening for receiving the second piston rod, the housing further comprising a circumferential wall extending between the first end wall and the second end wall, the housing surrounding the first and the second piston flange;

- a first packet of Belleville springs arranged between the first piston flange and the first end wall;

- a second packet of Belleville springs arranged between the second piston flange and the second end wall;

- a third packet of Belleville springs and a fourth packet of

Belleville springs arranged between the first piston flange and the second piston flange; and

- a washer arranged between the third packet of Belleville springs and the fourth packet of Belleville springs.

2. The suspension assembly according to claim 1, wherein a number of filling rings is arranged between the second packet of Belleville springs and the second end wall.

3. The suspension assembly according to claim 1 or 2, wherein a number of filling rings is arranged between the first packet of Belleville springs and the first end wall.

4. The suspension assembly according to any one of the preceding claims, wherein the housing has a length of 95 mm.

5. The suspension assembly according to any one of the preceding claims, wherein each of the Belleville springs is made of spring-steel and has an outer diameter of 40 mm and a thickness of 1 mm.

6. The suspension assembly according to any one of the preceding claims, wherein each packet of Belleville springs comprises two Belleville springs.

7. The suspension assembly according to any one of the preceding claims, wherein in unloaded condition of the load force limiter each

Belleville spring of the first and third packet of Belleville springs tapers outwardly in the direction from the first end wall to the washer, and each Belleville spring of the second and fourth packet of Belleville springs taper outwardly in the direction from the second end wall to the washer.

8. The suspension assembly according to any one of the preceding claims, wherein the first end of the first part of the suspension rod is arranged lower in the commercial motor vehicle than the second end of the second part of the suspension rod.