To provide an inexpensively manufacturable spring device capable of preventing mutual contact of arm parts even when many plate springs are overlapped and reducing thickness of the whole device.

A plurality of plate springs 5 having an outer peripheral part 8, a central part 9, and a plurality of arm parts 10 for connecting them, constituted integrally, and having the same shape are overlapped to constitute a vibration absorbing unit 4 as the spring device. Thickness X of the arm part 10 of the plate spring 5 is formed to be smaller than an interval Y between these arm parts 10. The plurality of plate springs 5 are overlapped by shifting them from each other around an axis Z being the direction of amplitude so that the arm parts 10 of adjacent plate springs 5 do not interfere mutually and are bent between the arm parts 10 of adjacent plate springs 5 when the arm parts 10 of the plate springs 5 are bent to prevent the arm part 10 of the plate spring 5 from coming into contact with the arm part 10 of adjacent plate spring 5 without using a spacer.

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