Transmission for use in motor vehicle

• US 4,653,346 A
• Filed: 08/27/1984
• Issued: 03/31/1987
• Est. Priority Date: 08/22/1984
• Status: Expired due to Fees

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Kato, Shogo, Takase, Jun, Kuramochi, Kouziro, Okada, Masanori
• Primary Examiner(s): Brown, Leslie
• Assistant Examiner(s): Wright, Dirk
• Application Number:
  US06/644,235
• Time in Patent Office: 946 Days
• Field of Search: 74/694, 74/695, 74/700, 74/701, 74/410
• US Class Current: 475/206
• CPC Class Codes: F16H 2057/02043 for vehicle transmissions
• CPC Class Codes: F16H 2057/02047 Automatic transmissions
• CPC Class Codes: F16H 57/0006 Vibration-damping or noise reducing means specially adapted for gearings devices for varying tension of belts, ropes or chains with damping means F16H7/0829; toothed members with construction providing vibration damping F16H55/14; reducing vibrations or noise of the gearbox casing F16H57/028; suppression of vibrations or noise of gear selectors F16H59/0208; control of hydrostatic fluid gearing preventing or reducing vibrations or noise F16H61/4183
• CPC Class Codes: F16H 57/028 characterised by means for reducing vibration or noise
• CPC Class Codes: F16H 57/037 Gearboxes for accommodating differential gearings rotating cases for differential gearings F16H48/40
• CPC Class Codes: Y10T 74/19628 Pressure distributing

Abstract

In a transmission for use in a motor vehicle is provided a transmission shaft having driven and driving gears on opposite ends thereof. Engine power is fed to the transmission shaft via the driven gear and then transmitted from the shaft to a final reduction-gear assembly via the driving gear. The transmission shaft is supported by first and second bearings radially and axially, respectively.

Claims

1. A transmission for use in a motor vehicle, said transmission including a transmission shaft on both ends of which are mounted respectively a first driven gear for receiving power from an engine and a driving gear for driving a second driven gear of a final reduction gear assembly, comprising:

a first bearing arranged at a first side of said first driven gear for supporting radially the transmission shaft; and

a second bearing arranged at a second side of said driven gear opposite said first side and provided separately from the first bearing and supporting the transmission shaft axially wherein said second bearing further comprises a thrust needle bearing provided between a housing portion for covering an end of said first driven gear on the transmission shaft and a flange portion of said transmission shaft and wherein said first bearing further comprises a first radial roller bearing.

2. A transmission for use in a motor vehicle as defined in claim 1, further comprising an axle shaft and an auxiliary speed change gear assembly wherein the transmission shaft extends parallel to a center axis of said auxiliary speed change gear assembly and said axle shaft.

3. A transmission for use in a motor vehicle as defined in claim 2, wherein said auxiliary speed change gear assembly includes an output gear and the driven gear of the transmission shaft meshes with said output gear of auxiliary speed change gear assembly.

4. A transmission for use in a motor vehicle as defined in claim 1, wherein the second bearing further comprises a thrust bearing.