Patent ID: 8234993

Claim:
An impact detector comprising: a case, an interior of which defines a first transition path and a second transition path; an impact indicator disposed on a front side of the case, to indicate an impact history of the impact detector when the case falls to at least one of a first direction and a second direction opposite the first direction; a first weight disposed inside the case, that moves to a side to which the case falls, causing the impact indicator to indicate the impact history by moving through at least one of the first transition path and the second transition path; a first guide member to guide the first weight from an initial position to a first impact detection position along the first transition path when the case falls in the first direction; and a second guide member to guide the first weight from the initial position to the second impact detection position along the second transition path when the case falls in the second direction; wherein the first transition path at least partly overlaps with the second transition path on a projection plane on the front side of the case.