| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a linear chassis driving mechanism which can have a large slide amount of the linear chassis only with cam grooves formed in a cam gear, and can moreover realize improvement in position accuracy of the linear chassis. SOLUTION: The linear chassis driving mechanism is provided with the cam gear 2 which is rotationally driven via a driving motor 4 and deceleration mechanisms 7 and 8 on a main chassis 1, two cam grooves, i.e., 1st cam grooves 12 and 13 which are circularly adjacent centering on a shaft 3 of the cam gear 2 in a circumferential direction of the cam gear 2, and 2nd cam grooves 15 and 16 which communicate with the 1st cam grooves 12 and 13 in a radial direction of the cam gear 2 and are made to the bifurcated grooves by a wall part 14, a linear chassis 9 which can be slidably moved to the main chassis 1, and two cam pins 17 and 18 which are adjacent to the linear chassis 9. Two cam pins 17 and 18 are engaged with the 1st cam grooves 12 and 13 by the rotation of the cam gear 2, and are driven by the wall part 14 of the 2nd cam grooves 15 and 16. Thereby, the linear chassis can have the large slide amount which is equal to or larger than radius of the cam gear 2.</p> |
