| 摘要 |
A standard and bracket support system having continuous adjustability to an infinite number of bracket positions is provided. The standard portion includes an elongated standard having opposed front and back walls with a slot through the front wall. The bracket has a heel portion coupled to a transverse plate. The plate has a length larger than the front-to-back interior depth of the standard. The bracket can be tilted upward, positioning the plate at an angle in the interior of the standard to permit free movement along the length of the standard, with the bracket arm extending through the slot. When the desired position is reached, the bracket is pivoted towards a locked configuration. The excess length of the plate causes elastic deformation of the standard walls. The plate moves from an upward angle configuration through a horizontal configuration, causing maximum standard deformation and to a downward angle configuration determined by a stop device such as the heel bottom of the bracket. In the locked configuration the plate is in contact with and compressed between opposed interior surfaces of the standard. The compression of the plate develops substantially sufficient frictional forces to maintain the bracket in the desired location. Maintenance of bracket position is achieved substantially without plastic deformation of the components, without gouging, punch-through or deforming of the standard. The edge of the plate which contacts the back surface of the standard is wider than the thickness of the plate and distributes the compression force over a effective width which is wider than bracket thickness.
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