| 摘要 |
PROBLEM TO BE SOLVED: To restrain a seat cushion side member from becoming unable to hook in a state of hooking a seat back side member on the outer end 22B of a spiral spring 22, in an energization device of a seat back in a vehicular seat, for fixing the inner end 22A of the spiral spring 22 to the seat back side member, hooking the outer end 22B of the spiral spring 22 on the seat cushion side member on a side where the relative angle is larger than a predetermined angle, and hooking on the seat back side member by releasing hooking with the seat cushion side member on the side where the relative angle is smaller than the predetermined angle.SOLUTION: Among a hooking part between the seat cushion side member and the seat back side member in the outer end 22B of the spiral spring 22, an inside hooking part in the radial direction of the spiral spring 22 is set in an angle in the radial direction so as to restrain the seat back side member hooked on the hooking part from moving toward an outside hooking part in the radial direction of the spiral spring 22. |
