Drive away axle assembly

• US 7,641,289 B2
• Filed: 03/25/2008
• Issued: 01/05/2010
• Est. Priority Date: 03/25/2008
• Status: Expired due to Fees

• Current Assignee: International Truck Intellectual Property Co. LLC (Volkswagen AG)
• Original Assignee: International Truck Intellectual Property Co. LLC (Volkswagen AG)
• Inventors: Korson, James J., Batdorff, Jonathan D.
• Primary Examiner(s): Morano; S. Joseph
• Assistant Examiner(s): Kotter; Kip T
• Application Number:
  US12/054,541
• Publication Number:
  US 20090243373A1
• Time in Patent Office: 651 Days
• Field of Search: 301/1, 301/6.1, 301/105.1, 301/111.01, 301/111.03, 301/124.1, 301/126, 301/131, 301/132, 301/137, 180/240, 180/385, 295/37, 295/44, 295/47, 403/1
• US Class Current: 301/137
• CPC Class Codes: B60B 2310/305 by screwing
• CPC Class Codes: B60B 2310/307 by removably mountable securing elements, e.g. circlips
• CPC Class Codes: B60B 2380/12 Ball bearings
• CPC Class Codes: B60B 2380/14 Roller bearings
• CPC Class Codes: B60B 27/001 with roller-bearings
• CPC Class Codes: B60B 27/0031 of the axial type, e.g. front teeth
• CPC Class Codes: B60B 2900/113 Production or maintenance time
• CPC Class Codes: B60B 2900/541 Servicing
• CPC Class Codes: B60B 35/121 Power-transmission from drive shaft to hub
• CPC Class Codes: B60B 35/163 characterised by specific shape of the housing, e.g. adaptations to give space for other vehicle elements like chassis or exhaust system
• CPC Class Codes: B60B 35/18 Arrangement of bearings

Abstract

The drive away axle assembly comprises at least an axle shaft having a proximal end seated within an axle housing and a distal terminal flange and a hub having a distal end land and a sidewall. The distal terminal flange of the axle shaft has bores therein which align with threaded bores in the distal end land of the hub, and axle shaft/hub connectors engage through the bores to removably connect the hub to the axle shaft. Further, an axle shaft retaining bolt extends through the sidewall of the hub for engagement with the axle shaft structures to maintain the axle shaft within the axle housing when the axle shaft/hub connectors are removed. Upon removal of such connectors, the hub rotates freely without imparting rotation to the axle shaft. Still further, an accessory spring may be provided for assisting in disengagement of the axle shaft flange from the hub.

Claims

1. A drive away axle assembly comprising at least an axle shaft having a proximal end seated within an axle housing and a distal terminal flange and a hub having a distal end land and a sidewall, the distal terminal flange of the axle shaft having bores therein which align with threaded bores in the distal end land of the hub, axle shaft/hub connectors engaging through the bores to removably connect the hub to the axle shaft, and an axle shaft retaining bolt extending through the sidewall of the hub for engagement with the distal terminal flange to maintain the axle shaft within the axle housing when the axle shaft/hub connectors are removed, and allowing for independent rotation of the hub about the axle shaft, without imparting any rotation thereto, when such axle shaft/hub connectors are removed.

2. The assembly of claim 1 wherein the axle shaft/hub connectors are bolts.

3. The assembly of claim 2 wherein the bolts are antichucking bolts.

4. The assembly of claim 1 further including a bearing press fit onto the axle shaft at a position against a first proximal boss of the distal flange of the axle shaft.

5. The assembly of claim 4 wherein a peripheral snap ring groove is created in the axle shaft at a position adjacent and proximal to the position of the press fit bearing on the shaft.

6. The assembly of claim 5 wherein a snap ring is engaged within the snap ring groove.

7. The assembly of claim 1 further including a lip seal pressed into an interior counterbore in a sidewall of the hub and extending radially inwardly against a second boss of the axle shaft, distally adjacent the first boss.

8. The assembly of claim 7 wherein the axle shaft retaining bolt extends into a peripheral groove created between the bearing and a proximal wall of said second boss.

9. The assembly of claim 1 further including a spring positioned between the hub and the distal flange of the axle for aiding in creating and maintaining a separation between the distal flange of the axle shaft and the distal land of the hub when the axle shaft/hub connectors are removed.