US 6,318,501 B1Granted

Transmission lubrication arrangement

AssigneeHonda Giken Kogyo Kabushiki Kaisha

InventorsHideo Udou, Kyoji Kitajima, Kiyokazu Ohkubo, Toshiharu Kumagai

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Abstract

In a transmission, an oil chamber is formed between one end of an input shaft and one end of an output shaft which ends are facing each other. A first oil guide is provided at the end of the input shaft such that the cylindrical portion of the first oil guide is positioned in a lubrication passage which is provided in the input shaft. In the same way, a second oil guide is provided a: the end of the output shaft such that the cylindrical portion is provided at the end of the output shaft such that the cylindrical portion of the second oil guide is positioned in a lubrication passage which is provided in the output shaft. In addition, the input shaft is provided with a release passage which opens to the outside of the input shaft while the output shaft is provided with a release passage which opens to the outside of the output shaft. With this arrangement, lubrication oil is supplied sufficiently to members such as bearings and gears which are disposed on these rotating shafts.

A lubrication arrangement in a transmission which incorporates a first rotational shaft and a second rotational shaft disposed such that one end of said first rotational shaft faces one end of said second rotational shaft, comprising:

a first lubrication passage which is provided extending axially inside said first rotational shaft with an opening at said one end thereof;
a second lubrication passage which is provided extending axially inside said second rotational shaft with an opening at said one end thereof;
a conduit which leads lubrication oil that is supplied from a source of lubrication oil to a space between said two openings of said first and second rotational shafts;
an oil chamber which is provided between said two openings and functions as a point where the lubrication oil led therein through said conduit is portioned out to said first lubrication passage and to said second lubrication passage:
a first oil guide which is provided in said oil chamber and functions to set an amount of lubrication oil flowing into said first lubrication passage;
and
a second oil guide which is provided in said oil chamber and functions to set an amount of lubrication oil flowing into said second lubrication passage,
wherein each of said first and second oil guides comprises a disk-shaped support portion and a cylindrical portion which extends perpendicularly from a central part of said support portion, which is fixed on a member constituting said oil chamber,
wherein said cylindrical portion of said first oil guide extends into said first lubrication passage while said cylindrical portion of said second oil guide extends into said second lubrication passage, and
wherein an open area which is provided at said cylindrical portion of said first oil guide and an open area which is provided at said cylindrical portion of said second oil guide are determined to set a ratio for the amounts of lubrication oil that are portioned out to said first lubrication passage and to said second lubrication passage.

7 more elements

Facts

Application

09/507,386Filed 18 Feb 2000

Priority

JP 11-04284022 Feb 1999

Granted

20 Nov 2001

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

F16H 57/0426
On or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like: means for guiding…
F16H 3/0915
Including a single countershaft: with coaxial input and output shafts
F16H 57/043
Guidance of lubricant: within rotary parts, e.g. axial channels or radial openings in shafts
F16H 57/0494
Gearings with spur or bevel gears: with variable gear ratio or for reversing rotary motion

Abstract

Claims6