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US07971872B2 Drive joint mechanism and image forming apparatus using the same 有权
驱动关节机构和使用其的成像装置

Drive joint mechanism and image forming apparatus using the same
Abstract:
A drive joint mechanism includes a drive shaft (30) and a driven shaft (24) coupled coaxially to the drive shaft (30). A coupling (31) on the drive shaft (30) or the driven shaft (24) has pin-engaging grooves (31a, 31b) and at least one pyramid-shaped pin-guide (32) between adjacent pin-engaging grooves (31a, 31b). An engagement pin (25) is provided on the other of the drive shaft (30) and the driven shaft (24) and engages the pin-engaging groove (31a, 31b). The engagement pin (25) contacts the pin-guide (32) while coupling the drive shaft (30) and the driven shaft (24). Thus, at least one of the drive shaft (30) and the driven shaft (24) is rotated by a pressing force exerted in the axial direction by the driven shaft (24) so that the pin-guide (32) guides the engagement pin (25) into the pin-engaging groove (31a, 31b).
Abstract(Chinese):

驱动关节机构包括与驱动轴（30）同轴配合的驱动轴（30）和从动轴（24）。 驱动轴（30）或从动轴（24）上的联轴器（31）具有销接合槽（31a，31b）和相邻销接合槽（31a）之间的至少一个金字塔形销导向件（32） ，31b）。 在驱动轴（30）和从动轴（24）中的另一个上设有一个接合销（25），并与销啮合槽（31a，31b）接合。 在联接驱动轴（30）和从动轴（24）的同时，接合销（25）接触销引导件（32）。 因此，驱动轴（30）和从动轴（24）中的至少一个通过从动轴（24）沿轴向施加的压力而旋转，使得销引导件（32）引导接合销 （25）插入销接合槽（31a，31b）中。

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