| 摘要 |
PROBLEM TO BE SOLVED: To provide a linear driving unit which reduces an amount of abrasion powder generated in a linear actuator and diffusing to a driven member side space of a dust-proof wall through a through hole.SOLUTION: A linear driving unit includes: a linear actuator 1 which enables driving in a straight manner; a wall member 5 which isolates a region where the linear actuator is driven in the straight manner from other regions; and a guide shaft 3 having a transmission portion 4 connected with the linear actuator and a driven member. The wall member is provided with bearing parts 5a, 5b which support the guide shaft extending in a straight driving direction; a through hole 5c through which the transmission portion penetrates; and a surface 5d contacting with the guide shaft at a part of or an entire periphery of the through hole. |
