Propshaft damper and method of assembly

Abstract

A propshaft damper for a vehicle is provided. The propshaft damper includes an inertia ring where the inertia ring having an inner ring. A rubber track is positioned on inner ring, the rubber track having an first inner surface. A transmission flange is further provided having a second inner surface and connected to the inertia ring. A hub is provided connecting the inertia ring to the flange. The hub having a first section and a second section where the first section of the hub includes a first outer surface and the second section includes a second outer surface. The first inner surface of the hub connected to the first outer surface of the hub. Further, the second outer surface of the hub is connected to the second inner surface of the flange thereby connecting inertia track and the flange by means of the hub in a secure press-fit connection.

1 . A propshaft damper for a vehicle, the propshaft damper comprising:
 an inertia ring, the inertia ring having an outer ring and an inner ring, the inner ring having an inner diameter, the inertia ring having a plurality of apertures, the apertures separated by a plurality of spokes;   a rubber track positioned on the inner diameter of the inner ring of the inertia ring, the rubber track having an inner surface, the rubber track is located spaced apart from but close to a rotating axis of the damper to provide a high radial stiffness;   a damper hub having a first section and a second section, the first section of the hub having an outer surface, the second section having an outer surface, the inner surface of the rubber track accommodating the first section of the hub, the second section of the hub connected with an inner surface of a flange by means of the hub.   
     
     
         2 . The propshaft damper of  claim 1  where the flange is a transmission flange. 
     
     
         3 . The propshaft damper of  claim 1  where the flange is a shaft flange. 
     
     
         4 . The propshaft damper of  claim 1  wherein the inner surface of the rubber track has a press-fit tolerance to securely connect the rubber track to the outer surface of the first section of the hub. 
     
     
         5 . The propshaft damper of  claim 1  wherein the outer surface of the rubber track has a press-fit tolerance to securely connect to the inner surface of the inner ring of the inertia ring. 
     
     
         6 . The propshaft damper of  claim 1  wherein the inner surface of the flange has a press-fit tolerance to securely connect the flange to the outer surface of the second section of the hub. 
     
     
         7 . The propshaft damper of  claim 1  wherein the hub, the rubber track and the inertia ring are mold bonded together. 
     
     
         8 . The propshaft damper of  claim 1  wherein the inertia ring includes at least one sealing lip extending axially around the ring. 
     
     
         9 . The propshaft damper of  claim 1  wherein the hub includes a mounting surface for a fastener. 
     
     
         10 . The propshaft damper of  claim 1  wherein the apertures include a rubber surface to minimize noise and vibration in case of collision. 
     
     
         11 . The propshaft damper of  claim 10  wherein the rubber surface of the aperture and the rubber track of the rubber track of the inertia ring are molded simultaneously through mold bonding. 
     
     
         12 . The propshaft damper of  claim 10  wherein the rubber surface of the apertures are installed as a separate snubber. 
     
     
         13 . The propshaft damper of  claim 1  wherein the flange includes a plurality protrusions which extend through the apertures of the inertia ring. 
     
     
         14 . The propshaft damper of  claims 2  and  3  wherein the hub includes a third section to accommodate an inner surface of the flange to align the flange with the other of the transmission flange or the shaft flange. 
     
     
         15 . A propshaft damper for a vehicle, the propshaft damper comprising:
 an inertia ring, the inertia ring having an outer ring and an inner ring, the inner ring having an inner diameter, an inertia ring having a plurality of apertures, the apertures separated by a plurality of spokes;   a rubber track positioned on the inner diameter of the inner ring of the inertia ring, the rubber track having an inner surface, the rubber track is located spaced apart from but close to a rotating axis of the damper to provide a high radial stiffness;   a damper hub having a first section, the first section of the hub having an outer surface, the inner surface of the rubber track connected to the outer surface of the first section of hub;   a fastener connecting the hub to a flange, the fastener extending through the flange and the hub and thus connecting the hub, the flange and the rubber track of the inertia ring.   
     
     
         16 . The propshaft damper of  claim 15  wherein an outer surface of a second section of the hub connects to an inner surface of the flange to align the hub to the flange. 
     
     
         17 . The propshaft damper of  claim 15  wherein the fastener is a nut and bolt configuration. 
     
     
         18 . The propshaft damper of  claim 15  wherein the hub includes a mounting surface for the fastener. 
     
     
         19 . A method of assembling propshaft damper having a hub, an inertia ring and a flange, the method comprising the steps of:
 applying a rubber track to an inner ring of the inertia ring, the rubber track having an inner surface;   applying a rubber surface to a plurality of apertures on the inertia ring;   connecting a first section of the hub to the inner surface of the rubber track; and   connecting a second section of the hub to an inner surface of the flange.