Oil supplying device

• US 20040108168A1
• Filed: 10/09/2003
• Published: 06/10/2004
• Est. Priority Date: 04/21/2001
• Status: Active Grant

• Current Assignee: ZF Friedrichshafen AG (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Original Assignee: ZF Friedrichshafen AG (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Inventors: Cizmarik, Jens, Blechschmidt, Dirk, Bathe, Kurt
• Granted Patent: US 7,195,103 B2
• Time in Patent Office: Days
• US Class Current: 184/6.12
• CPC Class Codes: F16H 2063/325 Rocker or swiveling forks, i.e. the forks are pivoted in the gear case when moving the sleeve
• CPC Class Codes: F16H 57/042 Guidance of lubricant
• 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 57/0468 Shift rods or shift forks
• CPC Class Codes: F16H 57/0494 with variable gear ratio or for reversing rotary motion
• CPC Class Codes: F16H 63/206 the final output mechanisms being mounted coaxially on a single shaft, e.g. mono rail shift mechanism
• CPC Class Codes: F16H 63/32 Gear shift yokes, e.g. shift forks
• CPC Class Codes: Y10T 74/20177 Particular element [e.g., shift fork, template, etc.]
• CPC Class Codes: Y10T 74/20183 Shift fork structure

Abstract

An oil supplying device (34, 36, 38) for a vehicle transmission (2) having one transmission housing (4, 6) with gears (10, 12, 16, 18, 22) situated upon shafts (8, 14, 20) and having teeth, bearings in which gears (10, 12, 16, 18, 22) and shafts (8, 14, 20) are rotatably mounted and one switch gear (30, 32, 50) suited to connect the gears (10, 12, 16, 18, 22) and shafts (8, 14, 20) for a transmission of torque. The device has an oil collecting duct (34) arranged on movable elements (32, 50) of the switch gear (30, 32, 50) which moves with the elements (32, 50) of the switch gear (30, 32, 50) and which extends substantially through the part in the transmission housing (4, 6) having all the gears (10, 12, 16, 18, 22). The oil collecting duct (34) has at least one opening (36, 38) which during movements of the elements (32, 50) of the switch gear (30, 32, 50) coats areas within the transmission housing (4, 6) on which the bearings and teeth are situated.

Claims

1. Oil supplying device (34, 36, 38) for a vehicle transmission (2) having one housing (4, 6) with gears (10, 12, 16, 18, 22) disposed upon shafts (8, 14, 20) and having teeth, bearings in which are rotatably supported gears (10, 12, 16, 18, 22) and shafts (8, 14, 20) and one switch gear (30, 32, 50) suited to connect said gears (10, 12, 16, 18, 22) and shafts (8, 14, 20) for a torque transmission, characterized in that situated upon movable elements (32, 50) of said switch gear (30, 32, 50) an oil collecting duct (34) is provided which moves with said elements (32, 50) of said switch gear (30, 32, 50) and which extends in said transmission housing (4, 6) substantially through the part having all said gears (10, 12, 16, 18, 22) and has at least one opening (36, 38) which during the movements of said elements (32, 50) of said switch gear (30, 32, 50) coats areas within said transmission housing (4, 6) on which said bearings and teeth area are situated.

2. Oil supplying device (34, 36, 38) according to claim 1, characterized in that said transmission housing (4, 6), in the area of an oil pan, a separating device (24) is provided which separates a first area (42) with a low oil level (48) from a second area (44) with a high oil level (46) and said oil collecting duct (34) conveys oil sprayed from said first area (42) with the low oil level (48) to said second area (44) with the high oil level (46).

3. Oil supplying device (34, 36, 38) according to claim 1 or 2, characterized in that at least one of said openings (36, 38) of said oil collecting duct (34) is disposed in a manner such that at least in a defined position of its movement it can deliver oil to a second oil collecting duct (82) which is stationarily fastened in said transmission housing (4, 6) or on a switching element.

4. Oil supplying device (34, 36, 38) according to any one of claims 1 to 3, characterized in that said oil collecting duct (34) has a slope so that in normal position of said transmission (2) oil can flow assisted by gravity into said oil collecting duct (34).

5. Oil supplying device (34, 36, 38) according to any one of claims 1 to 4, characterized in that said oil collecting duct (34) moves in longitudinal direction of said transmission housing (4, 6) along the axes of rotation of said shafts (8, 14, 20).

6. Oil supplying device (34, 36, 38) according to claim 5, characterized in that said oil collecting duct (34) is mounted upon a selector shaft (50) movable in longitudinal direction of said transmission housing (4, 6).

7. Oil supplying device (34, 36, 38) according to any one of claims 1 to 4, characterized in that said oil collecting duct (34) moves at right angles with the longitudinal direction of said transmission housing (4, 6) and thus at right angles with the axes of rotation of said shafts (8, 14, 20).

8. Oil supplying device (34, 36, 38) according to claim 7, characterized in that said oil collecting duct (34) is mounted upon a locking plate (32) which is provided for locking shaft forks of said switch gear (30, 32, 50) not selected for shifting and is movable at right angles with the longitudinal direction of said transmission housing (4, 6).

9. Oil supplying device (34, 36, 38) according to any one of claims 1 to 8, characterized in that said oil collecting duct (34) is made of a resistant plastic material.