| 摘要 |
A test fixture assembly releasably retains a printed circuit board on a test fixture and facilitates transfer of the board to and removal of the board from the fixture during a sequential test operation in which circuit boards under test are held in a test position, tested by a printed circuit board test apparatus, removed from the test position, and unloaded from the fixture, followed by receiving further boards in sequence for testing. The test fixture includes conductive test pins aligned with circuits on the board to be tested, and at least one board retaining assembly mounted to the fixture. The board retaining assembly includes a board retaining device positioned adjacent a surface of the test fixture and affixed to a free end of an elongated support member rigidly connected to the fixture. The free end of the support member moves angularly in response to a lateral force applied by the edge of the board moving over a cam surface of the board retaining device and into releasable engagement with a retaining section of the device. The support member mounts the board retaining device in a first position releasably engaging an edge of the circuit board to firmly hold the board on the test fixture. A subsequent lateral force applied to the board retaining device moves the retaining section of the device to a second position released from engagement with the edge of the board to thereby facilitate removal of the board from the test fixture.
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