Oil collecting pan for a planetary gearbox

Patent metadata

Field	Value
Publication number	US-12516728-B2
Application number	US-202218689986-A
Country	US
Kind code	B2
Filing date	Aug 10, 2022
Priority date	Sep 7, 2021
Publication date	Jan 6, 2026
Grant date	Jan 6, 2026

Abstract

An oil collecting pan for a planetary gearbox includes a pan body and a retaining plate. The pan body includes a channel-like oil collection space and axially protruding, hollow oil feed ports which communicate with the channel-like oil collection space. The retaining plate extends radially into the channel-like oil collection space and runs at least partially circumferentially through the channel-like oil collection space. The retaining plate forms an oil retaining space within the channel-like oil collection space.

First claim

The invention claimed is:

1 . An oil collecting pan for a planetary gearbox, comprising:
a pan body which has a channel-like oil collection space and a plurality of axially protruding, hollow oil feed ports which communicate with the oil collection space, and a retaining plate extending radially into the oil collection space and running around an entire circumference of the retaining plate, by means of which retaining plate an oil retaining space is formed within the oil collection space, wherein a width of the retaining plate changes around the circumference of the retaining plate.

2 . The oil collecting pan according to claim 1 , wherein the retaining plate, viewed axially, is positioned closer to a bottom wall of the pan body, from which the oil feed ports extend, than to an opposite wall.

3 . A planetary gearbox, comprising a shaft which has a channel structure for guiding oil, comprising a shaft-side channel opening on an outside of the shaft, a planetary carrier, at least two planetary pins arranged on the planetary carrier, on each of which planetary pins a planetary gear is mounted, wherein each planetary pin has a channel structure for feeding the oil to a bearing of the planetary gear, and an oil collecting pan for collecting the oil fed via the shaft-side channel according to claim 1 , comprising at least two hollow oil feed ports, each opening into a planetary pin-side channel structure, for feeding the oil into the respective channel structure.

4 . The planetary gearbox according to claim 3 , wherein the oil collecting pan is positioned in such a way that a region of a greatest width of the retaining plate, viewed in a circumferential direction, covers the opening of the shaft-side channel.

5 . An oil collecting pan for a planetary gearbox, comprising:
a pan body comprising:
a channel-like oil collection space; and
a plurality of axially protruding, hollow oil feed ports which communicate with the channel-like oil collection space; and
a retaining plate extending radially into the channel-like oil collection space and running at least partially circumferentially through the channel-like oil collection space, the retaining plate forming an oil retaining space within the channel-like oil collection space, wherein:
the retaining plate runs fully circumferentially; and
a width of the retaining plate changes around a circumference of the retaining plate.

6 . The oil collecting pan of claim 5 , wherein:
the pan body further comprises:
a bottom wall, the hollow oil feed ports extending therefrom; and
an opposite wall, axially opposite the bottom wall; and
the retaining plate, when viewed in a section extending through an axis of the oil collecting pan, is positioned closer to the bottom wall than to the opposite wall.

7 . A planetary gearbox, comprising:
a shaft comprising a shaft channel structure for guiding oil, the channel structure comprising a shaft-side channel opening on an outside of the shaft; a planetary carrier; at least two planetary pins arranged on the planetary carrier; a gear mounted on each of the at least two planetary pins, each gear comprising a bearing; and an oil collecting pan for collecting the oil fed via the shaft-side channel, wherein:
each of the at least two planetary pins comprises a planetary pin channel structure for feeding the oil to the bearing of the respective gear,
the oil collecting pan comprises:
a pan body comprising a channel-like oil collection space and a plurality of axially protruding, hollow oil feed ports which communicate with the channel-like oil collection space and open into a respective planetary pin channel structure; and
a retaining plate extending radially into the channel-like oil collection space and running at least in sections around a circumference of the retaining plate to form an oil retaining space within the channel-like oil collection space, a region of a greatest width of the retaining plate, viewed in a circumferential direction, covering the shaft-side channel opening.

Assignees

• Schaeffler Technologies Ag

Inventors

• Heymel Jan
• Hock Alfred
• Fischer Frederic
• Rehner Reinhard
• Keck Michael

Classifications

• F16H57/082

  Planet carriers · CPC title

• F16H57/0486

  with fixed gear ratio  (axle or inter-axle differentials F16H57/0483) · CPC title

• F16H57/0452

  Oil pans · CPC title

• F16H57/043

  within rotary parts, e.g. axial channels or radial openings in shafts · CPC title

• F16H57/0427

  on rotary parts, e.g. using baffles for collecting lubricant by centrifugal force · CPC title