Haptic actuator including thermally coupled heat spreading layer and related methods

A haptic actuator may include a housing that includes a ferromagnetic material having a first heat conductance, and a coil carried by the housing in a medial portion thereof and generating waste heat when electrically powered. The haptic actuator may also include a field member movable within the ho...

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Bibliographische Detailangaben
Hauptverfasser:	Harrison, Jere C, Hong, Vu A, Larson, Nils E
Format:	Patent
Sprache:	eng
Schlagworte:	ALARM SYSTEMS BLASTING CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION DYNAMO-ELECTRIC MACHINES ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERATION HEAT EXCHANGE IN GENERAL HEATING LIGHTING MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS MECHANICAL ENGINEERING ORDER TELEGRAPHS PHYSICS PRINTED CIRCUITS SIGNALLING SIGNALLING OR CALLING SYSTEMS WEAPONS
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Beschreibung
Zusammenfassung:	A haptic actuator may include a housing that includes a ferromagnetic material having a first heat conductance, and a coil carried by the housing in a medial portion thereof and generating waste heat when electrically powered. The haptic actuator may also include a field member movable within the housing responsive to the coil. The field member may include at least one permanent magnet establishing a magnetic path with the housing. A heat spreading layer may be thermally coupled to the housing adjacent the coil. The heat spreading layer may have a second heat conductance greater than the first heat conductance to spread the waste heat from the coil to adjacent portions of the housing.