Patent ID: 7271605
Filing Date: 2007-09-18
Classification: G01R

Abstract:
1. A burn-in apparatus comprising: a burn-in chamber for housing a burn-in board mounted with a plurality of electronic devices to be tested; a temperature adjustment board having a plurality of temperature adjustment arrays for heating/cooling said electronic devices by pressing and contacting said electronic devices; and an elevator device for moving said temperature adjustment board up and down in said burn-in chamber and for moving said temperature adjustment board in the direction of said burn-in board to bring said temperature adjustment arrays in contact with said electronic devices by pressing against them so that a burn-in test is performed said elevator device includes a push-pull device having a movable body which moves back and forth in the horizontal direction and a cam mechanism including a tilted cam and a cam follower for converting a back-and-forth movement of said movable body to a vertical movement to move said temperature adjustment board up and down, the tilted cam of said cam mechanism has a grooved cam tilted part for converting the back-and-forth movement to the vertical movement by cooperating with said cam follower, a first horizontal part continuing from one end of the grooved cam tilted part and extending in the horizontal direction is formed at one of both ends of said grooved cam tilted part on the side where said cam follower positions when a driven side member of the vertically movable cam mechanism positions at the uppermost position.