Positioning device for slide assembly

摘要

A positioning device of a slide assembly includes a first rail, a second rail slidably connected to the first rail and defining a path, and a third rail slidably connected to the path of the second rail. A positioning member is securely connected to the second rail. An engaging member is pivotably connected to the positioning member and includes an extension arm located corresponding to the positioning portion of the first rail and capable of engaging with the positioning portion. An extension wing has an inclined surface relative to a horizontal plane and extending toward the path of the second rail. A resilient member is connected to the engaging member and makes the extension wing of the engaging member slide toward the third rail. When the third rail is retracted relative to the second rail, the engaging member is disengaged from the positioning portion of the first rail.