| 摘要 |
A calking jig of a pem screw for circuit board fixation are provided to reduce a production cost of a high-tech electronic and precise product by calking a calking unit to a module base and stably and promptly mounting a circuit board on the module base at a low cost. A calking jig of a pem screw for circuit board fixation includes a pin construction unit and a die construction unit. The pin construction unit sequentially includes a pin receiving plate(14), a connection plate(13), and a fixation plate(12) with a calking pin(11) on a central part. The connection plate and the fixation plate are placed on a lower part of the pin receiving plate. The die construction unit includes a die receiving plate, a die connection plate(24), a die receiving block(22), and a module base receiving plate(28). The die receiving plate has an elastic body(27) inside an elastic space formed on a central part. The die connection plate has an elastic pin(25) inside a guide hole(24a) formed on a central part. The die receiving block has a calking die(21) in a die receiving hole(23). The module base receiving plate has a fixing hole(28a) to insert and fix the die receiving block on a central part thereof. The module base receiving plate is received in a state to be fixed to an upper part of the die connection plate such that a lower cross section of the calking die is in contact with an upper cross section of the elastic pin moving up and down according to a pressure of the elastic body.
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