Patent ID: 9016441
Filing Date: 2015-04-28
Classification: F16B,F16C,F16D

Abstract:
1. A linear stopper comprising: a stopper body that is adapted to detachably mounted on a guide member extending in a linear manner so as to guide an object for reciprocating movement, and has an inclined surface formed thereon, with a wedge-like space being constructed between the inclined surface and a surface of the guide member with a gap decreasing gradually toward one side of an extending direction of the guide member; rolling elements that are arranged in said wedge-like space so as to be rollable therein; and rolling element pressing means that presses the rolling elements in a direction to bite into the wedge-like space, so that the rolling elements are forced into pressure contact with the surface of the guide member and the inclined surface of the stopper body; wherein a one-way stopper mechanism is provided which restricts the relative movement of the stopper body with respect to said guide member toward a side at which the gap in the wedge-like space is large, due to a biting action caused by the rolling contact of the rolling elements in said wedge-like space, and allows the relative movement of the stopper body with respect to said guide member toward a side at which the gap in the wedge-like space is small, due to the sliding contact of the rolling elements in said wedge-like space, wherein the rolling element is a roller which is provided with a central concave surface portion of which a cross sectional configuration cut by a surface passing through a roller central axis is an arcuate concave shape and end convex surface portions which continue to the axially opposite sides of the central concave surface portion, and of which a cross sectional configuration cut by a surface passing through the roller central axis is an arcuate convex shape, and a radius of a contact portion of the central concave surface portion in contact with the guide from the roller central axis, and a radius of the opposite contact stopper body of the opposite end convex surface portions in contact with the stopper body from the roller central axis are set to the same radius.