| 摘要 |
PURPOSE: To increase strength of a transition part to a spherical journal by conically extending a neck part of an inner joint continuously from a joint body to a journal formed into a sphere. CONSTITUTION: In this rotary joint substantially consisting of an outer joint 1 and an inner joint 2, the inner joint 2 is provided with spherical journals directed radially to the outside from a joint axial line, while each of the journals receives one inner roller 7, and on the other hand, the inner roller 7 is supported by an outer roller 8 via a needle bearing 9. A neck part of the inner joint 2 conically extends from a main body of the inner joint 2 continuously to a spherically formed journal, and no narrow part is arranged within a range for connection of the neck part to the spherical journal. In this way, torque receiving capacity is increased with a structure dimension maintained, and especially, strength of a transition part from the inner joint to the spherical journal can be increased.
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