power transmission device

Abstract

The storage room partition plate (70) that divides the inside of the transmission case (22) into the differential chamber (60) and the working oil storage room (65) has a cylindrical portion (71) that covers the differential gear A part of the mechanism (50); the flange portion (72), which extends radially from the cylindrical portion (71); the differential ring gear surrounding portion (73), which extends from the outer peripheral portion of the flange portion (72) (72a) extends out and covers a part of the differential ring gear (45), the cylindrical portion (71), the flange portion (72) and the differential The movable ring gear surrounding part (73) is integrally formed between the transmission housing (22) and the outer peripheral edge part (72a) of the flange part (72), and at least in the range below the differential ring gear surrounding part (73) A sealing member (80) is arranged inside.

Description

Technical field [0001] The present invention relates to a power transmission device. The power transmission device has: a differential ring gear, which is arranged below a driving pinion on the input side and meshes with the driving pinion; a differential gear mechanism that is connected to the differential ring gear Gear connection; a housing, which houses a differential ring gear and a differential gear mechanism. Background technique [0002] In the prior art, as this kind of power transmission device, the following device is known, that is, the device has an intermediate shaft, a differential device (differential gear mechanism), a housing member, and a differential partition member, wherein the intermediate shaft It is arranged in parallel with the input shaft of the speed change mechanism; the differential device is arranged below the intermediate shaft and has a ring gear (differential ring gear) meshing with the output gear of the intermediate shaft; the housing component...

AI Technical Summary

Problems solved by technology

[0004] However, in the power transmission device in the above-mentioned prior art, it is difficult to make the storage chamber partition plate and the inner peripheral surface of the bead member completely close to each other, and a gap is formed between the storage chamber partition plate and the inner peripheral surface of the casing. gap

Therefore, in the above-mentioned conventional power transmission device, it may not be possible to sufficiently suppress the flow of lubricating oil in the storage chamber from the gap between the storage chamber partition plate and the bead member and the interior of the storage chamber partition plate and the shell member. The gap in the peripheral surface flows into the differential chamber, and the agitation resistance of the lubricating oil acting on the ring gear of the differential device cannot be reduced.

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