| 摘要 |
A wire matrix print head assembly having bearing and guide apparatus for a plurality of circumferentially spaced reciprocable wire members comprising one or more elongated bearing members each having a plurality of elongated passages, there being one passageway in each bearing member for each wire member and the passageways for each wire member in each bearing member being aligned and interconnected to provide a continuous wire passage receiving a majoral portion of each wire member and comprising in sequence a relatively long length enlarged first inlet and guide portion; a relatively short length intermediate second bearing portion; a relatively long length intermediate third guide portion; a relatively short length intermediate fourth bearing portion; a relatively long length intermediate fifth guide portion; and a relatively short length terminal sixth bearing portion, the guide portion enabling continuous uninterrupted slidable insertion of the wire member during assembly while also enabling free reciprocating movement of the wire member after assembly without circumferentially restrictive contact with the surfaces of the guide portions and the bearing portions also enabling continuous uninterrupted slidable insertion of the wire member during assembly while also providing circumferentially restrictive bearing support for relatively short length axially spaced portions of the wire members after assembly.
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