Sealing surface having leak-proof passage of an oil channel

Patent metadata

Field	Value
Publication number	US-11293542-B2
Application number	US-201715999468-A
Country	US
Kind code	B2
Filing date	Jan 26, 2017
Priority date	Feb 18, 2016
Publication date	Apr 5, 2022
Grant date	Apr 5, 2022

Abstract

A transmission housing includes a first housing half forming a first sealing surface and a first lubricant line, and a second housing half forming a second sealing surface and a second lubricant line. The first sealing surface and the second sealing surface seal an internal space in relation to an environment. An opening of the first lubricant line and an opening of the second lubricant line are fluidically connected to one another. The first sealing surface has a first groove and the second sealing surface has a second groove. The first groove and the second groove together form a third lubricant line. The third lubricant line runs between the opening of the first lubricant line into the first sealing surface and the environment of the transmission housing and between the opening of the second lubricant line into the second sealing surface and the environment of the transmission housing.

First claim

The invention claimed is:

1. A transmission housing, comprising:
a first housing half forming a first planar sealing surface and a first lubricant line, the first lubricant line being a bore extending in a first direction perpendicular to the first planar sealing surface; and
a second housing half forming a second planar sealing surface and a second lubricant line, the second lubricant line being a bore extending in a second direction perpendicular to the second planar sealing surface,
wherein the first sealing surface and the second sealing surface are configured to cooperate so as to seal an internal space in relation to an environment of the transmission housing, a first portion of the first sealing surface and a first portion of the second sealing surface being sealingly connected to one another with lubricant therebetween;
wherein the first lubricant line leads into the first sealing surface and the second lubricant line leads into the second sealing surface;
wherein an opening of the first lubricant line into the first sealing surface and an opening of the second lubricant line into the second sealing surface are fluidically connected to one another; and
wherein the first sealing surface has a first groove and the second sealing surface has a second groove;
wherein the first groove and the second groove together form a third lubricant line disposed at a distance from the first and second lubricant lines;
wherein the third lubricant line runs between the opening of the first lubricant line into the first sealing surface and the environment of the transmission housing and between the opening of the second lubricant line into the second sealing surface and the environment of the transmission housing;
wherein the third lubricant line leads into the internal space on both sides;
wherein the first portion of the first sealing surface and the first portion of the second sealing surface are configured to have a sealant introduced therebetween and are configured to be braced, by a screw connection, against one another and the sealant introduced therebetween.

2. A transmission housing, comprising:
a first housing half forming a first planar sealing surface and a first lubricant line, the first lubricant line being a bore extending in a first direction perpendicular to the first planar sealing surface; and
a second housing half forming a second planar sealing surface and a second lubricant line, the second lubricant line being a bore extending in a second direction perpendicular to the second planar sealing surface,
wherein the first sealing surface and the second sealing surface are configured to cooperate so as to seal an internal space in relation to an environment of the transmission housing;
wherein the first lubricant line leads into the first sealing surface and the second lubricant line leads into the second sealing surface;
wherein an opening of the first lubricant line into the first sealing surface and an opening of the second lubricant line into the second sealing surface are fluidically connected to one another; and
wherein the first sealing surface has a first groove and the second sealing surface has a second groove;
wherein the first groove and the second groove together form a third lubricant line disposed at a distance from the first and second lubricant lines;
wherein the third lubricant line runs between the opening of the first lubricant line into the first sealing surface and the environment of the transmission housing and between the opening of the second lubricant line into the second sealing surface and the environment of the transmission housing;
wherein the third lubricant line leads into the internal space on both sides; and
wherein an O-ring is disposed about the opening of the first lubricant line into the first sealing surface, the O-ring fluidically connecting the opening of the first lubricant line into the first sealing surface and the opening of the second lubricant line into the second sealing surface.

3. The transmission housing of claim 2 , wherein the first groove is disposed at a distance, in a third direction perpendicular to first direction, from the opening of the first lubricant line into the first sealing surface.

4. The transmission housing of claim 3 , wherein the first groove is formed from an indentation, extending parallel to the first direction, in the first planar sealing surface.

5. The transmission housing of claim 4 , wherein the indentation extends over a length in a fourth direction perpendicular to both the first direction and the third direction.

6. The transmission housing of claim 5 , wherein the indentation extends, in the fourth direction, from a first terminus adjacent the internal space to a second terminus adjacent the internal space.

7. The transmission housing of claim 3 , wherein a portion of the O-ring extends, in the third direction, between the first groove and the opening of the first lubricant line into the first sealing surface.

8. The transmission housing of claim 7 , wherein a first portion of the first planar sealing surface extends, in the third direction, between the portion of the O-ring and the first groove.

9. The transmission housing of claim 8 , wherein a second portion of the first planar sealing surface extends, in the third direction, between the first groove and the environment of the transmission housing, and
wherein the first groove separates the first portion of the first planar surface and the second portion of the first planar surface.

10. A transmission housing, comprising:
a first housing half forming a first planar sealing surface and a first lubricant line, the first lubricant line being a bore extending in a first direction perpendicular to the first planar sealing surface; and
a second housing half forming a second planar sealing surface and a second lubricant line, the second lubricant line being a bore extending in a second direction perpendicular to the second planar sealing surface,
wherein the first sealing surface and the second sealing surface are configured to cooperate so as to seal an internal space in relation to an environment of the transmission housing;
wherein the first lubricant line leads into the first sealing surface and the second lubricant line leads into the second sealing surface;
wherein an opening of the first lubricant line into the first sealing surface and an opening of the second lubricant line into the second sealing surface are fluidically connected to one another; and
wherein the first sealing surface has a first groove and the second sealing surface has a second groove;
wherein the first groove and the second groove together form a third lubricant line disposed at a distance from the first and second lubricant lines;
wherein the third lubricant line runs between the opening of the first lubricant line into the first sealing surface and the environment of the transmission housing and between the opening of the second lubricant line into the second sealing surface and the environment of the transmission housing;
wherein the third lubricant line leads into the internal space on both sides; and
wherein the first groove is disposed at a distance, in a third direction perpendicular to first direction, from the opening of the first lubricant line into the first sealing surface.

11. The transmission housing of claim 10 , wherein a first portion of the first planar sealing surface extends, in the third direction, between the first groove and the opening of the first lubricant line into the first sealing surface.

12. The transmission housing of claim 11 , wherein a second portion of the first planar sealing surface extends, in th

Assignees

• Zahnradfabrik Friedrichshafen
• Zf Wind Power Antwerpen Nv

Inventors

• Sperlich Ralf
• Strasser Dirk
• Muench Joerg

Classifications

• F16H57/029

  characterised by means for sealing the gearboxes, e.g. to improve airtightness · CPC title

• F16H57/0424 Primary

  Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes · CPC title

• F16H2057/02043

  for vehicle transmissions · CPC title