| 摘要 |
A replaceable roller turns on an axle supported at the end of a cantilever arm. The roller is preferably brass or other highly conductive, durable material for making electrical contact with a terminal of an electrical device, e.g. a ceramic capacitor. The arm is made from a highly conductive, resilient material. There are a plurality of such arms with rollers connected in parallel to a holding module, preferably with the rollers aligned. The holding module is secured to a structure, e.g. a component test handler jig, and provides a conductive path between each roller/cantilever arm assembly and the test jig. In operation a stream of components are indexed to the rollers such that their terminals are aligned with the rollers. The rollers intrude slightly into the path of the compnents so that as they are indexed to the rollers, the components deflect the rollers causing them to roll across the components' terminals. The resilience of the cantilever arms presses the rollers against the terminals to make good electrical contact. Preferably the roller/cantilever arm assemblies are easily disconnectable from their holders so they can be quickly replaced when needed, and this patent describes such a preferred connection mechanism.
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