Transmission Lubricating Structure

• US 20140174857A1
• Filed: 12/12/2013
• Published: 06/26/2014
• Est. Priority Date: 12/21/2012
• Status: Active Grant

• Current Assignee: Kawasaki Motors Ltd (Kawasaki Heavy Industries Limited)
• Original Assignee: Kawasaki Jukogyo Kabushiki Kaisha (Kawasaki Heavy Industries Limited)
• Inventors: Matsuda, Yoshiharu, Arima, Hisatoyo, Tanaka, Yoshinobu
• Granted Patent: US 9,435,424 B2
• Time in Patent Office: Days
• US Class Current: 184/26
• CPC Class Codes: F16H 57/0424 Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes means for guiding lubricant into an axial channel of a shaft F16H57/0426
• CPC Class Codes: F16H 57/0456 Lubrication by injection; Injection nozzles or tubes therefor oil mist or spray lubrication F16H57/0458
• CPC Class Codes: F16H 57/0484 with variable gear ratio or for reversing rotary motion

Abstract

A transmission lubricating structure which lubricates a transmission using a lubricating fluid, the transmission including a plurality of gear pairs each including a drive gear and a driven gear, includes a lubricating fluid feeding unit for feeding the lubricating fluid to the gears of the gear pairs; wherein the lubricating fluid feeding unit includes a plurality of injection nozzles, each of which directly injects the lubricating fluid to a tooth of the drive gear and a tooth of the driven gear, which teeth start to engage with each other.

Claims

1. A transmission lubricating structure which lubricates a transmission using a lubricating fluid, the transmission including a plurality of gear pairs each including a drive gear and a driven gear, the transmission lubricating structure comprising:

a lubricating fluid feeding unit for feeding the lubricating fluid to the gears of the gear pairs;

wherein the lubricating fluid feeding unit includes a plurality of injection nozzles, each of which directly injects the lubricating fluid to a tooth of the drive gear and a tooth of the driven gear, which teeth start to engage with each other.

2. The transmission lubricating structure according to claim 1,

wherein the plurality of injection nozzles are provided to correspond to the plurality of gear pairs, respectively, in a one-to-one correspondence.

3. The transmission lubricating structure according to claim 2,

wherein an injection angle of each of the plurality of injection nozzles is individually set such that the lubricating fluid is injected to the tooth of the drive gear and the tooth of the driven gear in a corresponding gear pair, which teeth start to engage with each other.

4. The transmission lubricating structure according to claim 1, further comprising:

a case for accommodating the plurality of gear pairs;

wherein the lubricating fluid feeding unit includes a nozzle retaining member for retaining the injection nozzles inside of the case; and

wherein the nozzle retaining member has insertion holes into which the injection nozzles are inserted, respectively, and a fastened surface fastened to a fastening surface provided on the case.

5. The transmission lubricating structure according to claim 4,

wherein the case is provided with a case passage through which the lubricating fluid flows;

wherein the nozzle retaining member is provided with a nozzle passage through which the lubricating fluid flows;

wherein a first opening at a downstream of the case passage in a flow direction of the lubricating fluid is formed in the fastening surface; and

wherein a second opening at an upstream side of the nozzle passage in the flow direction of the lubricating fluid is formed in the fastened surface such that the second opening is communicated with the first opening.

6. The transmission lubricating structure according to claim 4

wherein the case includes a case body having a case opening and a lid member removably attached to the case body such that the lid member closes the case opening;

wherein the plurality of gear pairs, a shaft member of the drive gears and a shaft member of the driven gears constitute a gear unit; and

wherein the gear unit is removably mounted to the case body through the case opening from axial directions of the shaft members.