| 摘要 |
<p>A ferromagnetic ball (1) is mounted between dished first and second contacts (2 and 5) and subjected to magnetic restraint tending to retain the ball (1) in its central, rest position by means of a rare earth type magnet (7) which is accurately positioned relative to the ball (1) by means of a polyester shim (6) clamped between the first contact (2) and the magnet (7) as a result of resilient deformation of an annular portion (9) of a cap (8) attached to a housing member (11) enclosing the first and second contacts (2 and 5). Lugs (18) extending from the first and second contacts (2 and 5) pass through openings in the housing member (11) and through apertures in a printed circuit board (16) to which the sensor is attached by dowels (19). The lugs (18) are then attached to the printed circuit board (16) by soldering. </p> |
