| 摘要 |
PROBLEM TO BE SOLVED: To provide a tension spring unit which operates stably.SOLUTION: A tension spring unit includes: a first guide 1 and a second guide 2 assembled to be relatively movable in an axial direction and interposed with an object; a spring 3 disposed along an outer peripheral surface of at least one of the first guide 1 and the second guide 2; first spring compressing parts 14, 15 and a second spring compressing part 21b which are disposed at the first guide 1 and the second guide 2, respectively, and which approach each other and compress the spring 3 when the first guide 1 and the second guide 2 moves relatively so as to separate in a tension direction. |
