| 摘要 |
PROBLEM TO BE SOLVED: To reduce manufacturing cost and assembling cost by solving problems of conventional differential gears wherein the quantity of assembling parts is large and structure is complicated. SOLUTION: This differential gear for the partitioning of a feed device comprises a shaft, a first roll, a second roll, and a pin. The first roll is positioned at one end of the shaft, and has a first outer frame and a first projection on the inner diameter side of the first outer frame. The second roll is joined to the shaft, and has a second outer frame, a joining hole formed at the second outer frame and used for joining the shaft, a groove extending from the diameter of the joining hole to the second outer frame, a second projection positioned at the other end of the joining hole and brought into contact with the first projection, and a pin installed in the groove after the shaft is drilled. The second roll is rotated when the shaft is rotated to drive the second projection, and shifted in the first outer frame and brought into contact with the first projection, and the first roll is rotated to shift paper. COPYRIGHT: (C)2008,JPO&INPIT
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