The invention in the convex surface of the movable member top portion is secured to the concave surface portion of the lower support members, the tension coil spring is mounted on the inside, sitting on the upper movable member and rotate or move the pelvis back and forth to the waist motion It relates to a wobble device.
Wobble device described in claim penetrating the pillar portion 11 in the upper surface center of the column portion 11 are integrally formed, the upper movable member 10 to the lower surface center of the movable member 10, the upper 1 the hollow portion 12 is formed at the lower end periphery of the columnar portion 11 is rounded, the columnar portion convex surface portion 13 on the bottom periphery of the substrate 11 is formed, in the center of the lower supporting member 20 the second hollow part 21 is formed, the second hollow part 21 and the second hollow in the top surface of the first hollow part is consistent with (12), the lower supporting member 20 of the movable member 10, the upper portion concave surface on the circumference of the 21 parts 22 are formed, the convex curved portion 13 of the pillar portion 11 in the concave surface portion 22 of the lower supporting member 20 is seated, the first hollow 12 and the second hollow part tension coil spring 30 to 21 are arranged, the first stopper 33 is fastened to the top of the first hollow part 12, a second hollow portion (21) at the bottom characterized in that the second stopper 35 is engaged, the upper end of the tension coil spring 30 is mounted to the first stopper (33), mounted on the bottom of the second stopper 35 of the tension coil spring 30 to the It shall be.