Patent ID: 7328900

Claim:
An impact simulation device for a game machine, comprising: a seat upon which a player sits; a belt applying a belt force to said player so as to urge the player into the seat; an impact generating unit configured to change the belt force such as to simulate an impact, said impact generating unit including: a winding-up unit which winds the belt and has a bias member that biases the belt to be wound up in a direction applying the belt force to the player; a winding unit provided along a path of said belt between the winding-up unit and a position where the player is fastened, said winding unit including a drum having a circumferential surface portion onto which the belt is wound; the winding unit being configured such that; said drum is rotated in a first direction from an initial position P 0 , in order through angular positions P 1 and P 2 , to angular position P 3 , said winding unit is set in a release state when the angular position of said drum is in a range up to the first position P 1 from the initial position P 0 wherein the is freely let out, and wound up from, the position in which the player is fastened, and said winding unit includes: a mechanical unit which rotates the drum expelling out the belt toward the player with rotation of the drum in the first direction within the angular range from said first position P 1 to the position P 3 ; and an arm attached to the drum so as to rotate together with said drum and rotate across the path of said belt at a position between said drum and said player when said drum being in the angular range beginning from a middle point P 2 , between said first position P 1 and the predetermined angular position P 3 , to the predetermined angular position P 3 , and engage said belt so as to retract said belt in a direction to increase the belt force applied to the player.