| 摘要 |
983,892. Press-button retractive switches. TELEFONAKTIEBOLAGET L. M. ERICSSON. Nov. 7, 1962 [Nov. 7, 1961], No. 42156/62. Heading H2B. Contacts 3, 4 on a printed circuit board 1 are interconnected by spring metal members 5 bent at 6, 7, and each providing an intermediate loop 10 passing through a hole 11 in the board such that insulating rods 8 passing through the loops 10 hold the members 5 in place on the board under their own springiness. Pushbuttons passing through further holes 9 in the board directly act on the spring members 5 to break the interconnections, by lifting members 5 off contacts 3. |
