| 摘要 |
PURPOSE: A roller screw for the electric brake of a vehicle is provided to shorten assembly time for arranging the predetermined position arrangement of a roller by forming a jig hole and a roller central axis to correspond to each other one to one. CONSTITUTION: A roller screw for the electric brake of a vehicle comprises a nut member, a roller member(120), a spindle member(130), a jig(200), and a predetermined position installation unit(300). The nut member rotates through an external force and is equipped with a screw tread along the inner side with a circular locus. A plurality of roller members are inserted into the nut member. The roller member is equipped with the roller screw thread of a different pitch on the circumference of a central axis(124). The spindle member is inserted into the nut member and is equipped with a spindle screw thread(132) to be circumscribed with the roller member. The spindle member axially moves along with the rotation direction of the nut member. The jig is arranged with installation holes for corresponding to each central axis along a regular locus. The predetermined position installation unit is inserted into a predetermined position which corresponds to each central axis of the roller member.
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