| 摘要 |
PURPOSE:To simplify construction by providing respectively 3 electrodes having 30 deg. spaces in the inside and outside on a wiring board by shifting the positions from each other, bringing a contact piece which makes one turn on 12 hours on a concentrical circumference into sliding contact therewith and detecting time from the attachment and detachment thereof. CONSTITUTION:The inside electrodes 2A, 2C, 2E and outside electrodes 3A, 3C, 3E which have respectively the inside spaces 2B, 2D, 2F and outside spaces 3B, 3D, 3F spaced from each other at 30 deg. are provided on the wiring board 1 by shifting the positions thereof from each other. The contact piece 7 which makes on turn on 12 hours on the concentrical circle is brought into sliding contact therewith so that the time is detected by the way of the contact between the inside circumferential contact 7a and outside circumferential contact 7b of the piece 7 and the electrodes 2A, 2C, 2F and 3A, 3C, 3F. The radius of the 12-hour wheel (not shown) is thus made smaller and the number of the contact pieces is decreased, by which the time detector having the simple constitution without generation of erroneous contact, etc. is obtd. |
