Differential gear casing for a motor vehicle

• US 6,523,435 B2
• Filed: 04/11/2001
• Issued: 02/25/2003
• Est. Priority Date: 04/22/2000
• Status: Active Grant

• Current Assignee: GKN Automotive Ltd (Melrose Industries Plc)
• Original Assignee: Getrag Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & CIE KG
• Inventors: Mastroianni, Mark, Ruehle, Guenter
• Primary Examiner(s): Bonck, Rodney H.
• Assistant Examiner(s): ABDELNOUR, DENNIS J
• Application Number:
  US09/832,713
• Publication Number:
  US 20020002096A1
• Time in Patent Office: 685 Days
• Field of Search: 475/160, 475/230, 746/06.A, 746/06.R, 746/07, 184/6.12, 184/11.1, 184/11.2, 184/11.3, 184/13.1
• US Class Current: 74/606.00R
• CPC Class Codes: F16H 48/08 comprising bevel gears
• CPC Class Codes: F16H 57/0423 Lubricant guiding means mounted or supported on the casing, e.g. shields or baffles for collecting lubricant, tubes or pipes means for guiding lubricant into an axial channel of a shaft F16H57/0426; lubrication by injection, injection nozzles or tubes therefore F16H57/0456
• CPC Class Codes: F16H 57/0483 Axle or inter-axle differentials
• CPC Class Codes: Y10T 74/2186 Gear casings

Abstract

A differential gear for a motor vehicle, comprises a casing, an input shaft, two output shafts, and a differential supported within the casing. The casing comprises two casing parts connected to each other along a separation plane which is oriented perpendicular with respect to the output shafts. At least one of the two casing parts comprises a projection which serves as a hollow carrier. The projection comprises an attachment spot for attaching the casing to a body of the motor vehicle, and is arranged above a rest oil level within the casing, wherein a retaining element is arranged within the casing at the entrance of the projection. The retaining element limiting the flow of oil which has been thrown into the projection, back into the casing.

Claims

1. A differential gear for a motor vehicle, comprising:

a casing,

an input shaft which can be connected to a drive shaft of the motor vehicle,

two output shafts which are arranged approximately perpendicular to the input shaft and which can be connected to a respective wheel of the motor vehicle, and

a differential supported within the casing

wherein the casing comprises two casing parts, each of the casing parts comprising an attachment spot for attaching the casing to a body of the motor vehicle, the casing parts being connected to each other along a separation plane which is arranged under an angle of more than 40 degrees with respect to the output shafts, wherein at least one of the two casing parts comprises a projection which serves as a hollow carrier, said projection comprising an attachment spot for attaching the casing to the body of the motor vehicle, said projection being arranged generally parallel with respect to the output shafts and offset from an axis of said output shafts, and said projection being arranged above a rest oil level within the casing, wherein a retaining element is arranged within the casing at the entrance of the projection, said retaining element limiting the flow of oil which has been thrown into the projection, back into the casing.

2. A differential gear in accordance with claim 1, wherein the separation plane is arranged approximately perpendicular to the output shafts.

3. A differential gear in accordance with claim 1, wherein the retaining element is a retaining sheet that is fastened to an entrance of the projection.

4. A differential gear in accordance with claim 1, wherein the two casing parts are form-fittingly connected to each other in a direction transverse to the direction of the output shafts.

5. A differential gear in accordance with claim 1, wherein the two casing parts are sealed to each other by means of an O-ring seal.

6. A differential gear in accordance with claim 1, wherein the two casing parts are manufactured from a light-weight material.

7. A differential gear in accordance with claim 6, wherein the two casing parts are manufactured from magnesium alloy.

8. A differential gear in accordance with claim 6, wherein the two casing parts are manufactured from an aluminum alloy.

9. A differential gear in accordance with claim 1, wherein each of the two casing parts comprises one projection, said two projections pointing in different directions.