Patent ID: 8231274
Filing Date: 2012-07-31
Classification: F16C

Abstract:
1. A motion guide device, characterized in that the device comprises a raceway member having a rolling-element rolling part; a moving member having a loaded rolling-element rolling part facing the rolling-element rolling part and being allowed to make a linear or curved movement relatively to the raceway member; a plurality of rolling elements intervening between the rolling-element rolling part of the raceway member and the loaded rolling-element rolling part of the moving member; and a layer of oil filled in a gap between the raceway member and the moving member such that the layer of oil contacts the raceway member and the moving member, the moving member having a moving block on which the loaded rolling-element rolling part is formed, and an end damping member which is separate from the moving block and attached to an end face of the moving block in a movement direction of the moving block, the layer of oil being filled in a gap between the end damping member and the raceway member, and viscosity resistance of the oil being utilized to apply a braking force to the moving member or the raceway member in proportion to a speed, the end damping member having a plurality of first thin plates and a plurality of second thin plates, the first and second plates being laminated on one another alternately between the first and second plates, the first plates and the second plates having an opening formed therein to be consistent in shape with the raceway member, and a gap between the second plates and the raceway member being larger than a gap between the first plates and the raceway member so that the end damping member has a surface contacted by the layer of oil and shaped to become the concavo-convex surface in a condition where the first plates and the second plates are laminated.