Transfer gear assembly

• US 4,622,859 A
• Filed: 10/09/1984
• Issued: 11/18/1986
• Est. Priority Date: 10/09/1984
• Status: Expired due to Term

• Current Assignee: Torque-Traction Technologies Incorporated (Dana, Inc.)
• Original Assignee: Dana Corporation (Dana, Inc.)
• Inventors: Hobson, Donald E.
• Primary Examiner(s): Herrmann, Allan D.
• Application Number:
  US06/658,572
• Time in Patent Office: 770 Days
• Field of Search: 74/15.86, 74/15.88, 74/606 R, 74/417, 192/85 V, 192/85 C, 192/112
• US Class Current: 74/15.88
• CPC Class Codes: B60K 17/28 characterised by arrangement, location, or type of power take-off
• CPC Class Codes: Y10T 74/19665 Bevel gear type
• CPC Class Codes: Y10T 74/2186 Gear casings

Abstract

A transfer gear assembly connected to a transaxle in order to provide the transaxle with a power take-off. The transfer gear assembly includes a case with an access opening and a shaft connectable to the transaxle through a gear set by a clutch. The transfer gear assembly also includes an actuator for moving the clutch between its engaged and disengaged positions and a combined access opening cover and actuator shield fastened to the case.

Claims

1. A transfer gear assembly for use in a vehicle having a transaxle, said transaxle having a housing and an output gear, said transfer gear assembly comprising:

a case adapted to be carried by the transaxle housing, first and second axially spaced coaxial shafts rotatably journalled in said case, a first gear mounted on said first shaft for engagement with said output gear, a clutch actuable between a disengaged position and an engaged position to connect said first and second shafts for conjoint rotation, a second bevel gear fixed to said second shaft, a nut threaded onto said second shaft to secure said second bevel gear, a third shaft mounted in said case having an axis of rotation oriented transverse to the axis of rotation of said first and second shafts, and a third bevel gear fixed to said third shaft and engaged with said second bevel gear,

said case having a wall disposed at an oblique angle relative to the axes of rotation of said first and second coaxial shafts and said third shaft, said wall defining an access opening aligned with the axis of rotation of said first and second coaxial shafts to allow insertion and removal of said nut, said second gear, and said second and third shafts,

a vacuum actuator having a diaphragm canister mounted externally on said case adjacent and spaced from said access opening, said vacuum actuator having a rod extending parallel to the axis of said first and second coaxial shafts into said case and into engagement with said clutch, said vacuum actuator for actuating said clutch between said engaged and disengaged positions, and

a combined cover plate and shield attached to said case covering said access openwing and at least partially surrounding said diaghragm canister, wherein said combined cover plate and shield has a first planar portion disposed at said oblique angle to the axis of rotation of said first, second and third shafts to fit flush against said wall defining said access opening, and wherein the portion of said combined cover plate and shield surrounding said at least a portion of said vacuum canister is spaced from said case to accommodate the external mounting of said diaphragm canister.

2. The assembly set forth in claim 1 wherein said combined cover plate and shield includes

a second planar portion integral with said first planar portion and disposed substantially parallel to the axis of said third shaft,

a third planar portion integral with said second planar portion and disposed substantially parallel to the axis of said first and second shafts, and

a fourth planar portion integral with said second planar portion and disposed substantially at a right angle to said second and third planar portions, wherein said second, third and fourth planar portions are spaced from said case, and together with a portion of said case, form a cavity externally of said case in which said diaphragm canister is positioned.