Constant velocity universal joint with lubricant reservoir
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United States of America Patent
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-
Jan 16, 2001
Grant Date -
N/A
app pub date -
Sep 16, 1997
filing date -
Sep 21, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A constant velocity universal joint has an outer part (1), an inner part (12) arranged in the outer part (1), and a cage (24) for guiding balls (23) each accommodated in an inner track (14) and an outer track (3). A control element (29) is arranged between the inner part (12) and a first attaching element (5) associated with the outer part (1). A second attaching part (18) is associated with the inner part (12). The second attaching element (18) is provided in the form of a tubular shaft. The invention provides advantageous lubrication conditions for the parts sliding on one another, i.e. the control face (17) and seat face (31) of the control element (29) on the one hand and the sliding face (10) as well as the contact face (30) of the control element (29) contacting the sliding face (10) on the other hand. Two chambers (9, 20) which accommodate lubricant and communicate with one another through an aperture (32) are provided. The chamber (20) is provided in the second attaching element by being separated from the remaining interior (22) by a separating element (21). In this way, an adequate lubricant reservoir is made available for the faces which slide on one another, the reservoir extending over the service life of the joint. The lubricant cannot escape outwardly when the joint rotates.
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