| 摘要 |
<p>A vehicle horn assembly (40) includes an electromagnetic reciprocating motor (44) disposed within a plastic motor housing (42). A sound projector (46) is connected to the housing with the peripheral outer rim of a spring metal diaphragm (47) clamped between respective upper and lower annular clamping surfaces of the housing (42) and the projector (46). The diaphragm (47) is axially spaced from a pole piece (96) to form an air gap. The pole piece (96) is axially adjustable to change the size of the air gap. The coil (52) surrounds at least a portion of the pole piece (96). A yoke (60) may bridge a motor cup (56) opening opposite the bottom wall. However, the presence of the diaphragm rim prevents the clamping surfaces from closing together which tends to prevent the plug (128, 130) and socket ribs (146, 148) from fully nesting. This causes the plug ribs (128, 130) to engage the socket ribs (146, 148) along respective opposing linear surfaces, sealing the motor components from moisture and other contaminants.</p> |
