| 摘要 |
PURPOSE:To stick a crystal piece surely in accordance with a variation of dimentions of the crystal piece, by forming front end parts of a pair of lead wires into a flat shape by compression molding to expand them after these lead wires are seal-fixed to a shell with a glass and adjusting the interval between both lead wires. CONSTITUTION:A pair of lead wires 2 are inserted through a pair of holes 3a of an annular material glass 3 and are seal-fixed to an annular metallic shell 1 by a glass. After this glass seal-fixing, front end parts of lead wires 2 are compressed in the direction orthogonal to the arrangement direction of them by dies D1 and D2 to form flat expanded parts 2a. Dimensions between flat expanded parts 2a are made different, and a crystal piece 4 is inserted between flat expanded parts 2a and is soldered. The interval between lead wires 2 is adjusted by flat expanded parts 2a, and the crystal piece 4 is stuck surely in accordance with the variation of dimensions of the crystal piece 4. |
