Linear actuator and method of manufacturing linear actuator...

H - Electricity – 02 – K

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H02K 15/14 (2006.01) F16F 15/02 (2006.01) H02K 15/02 (2006.01) H02K 33/16 (2006.01)

Patent

CA 2761893

A linear actuator that has a linear actuator main-body (2), a case (3) for accommodating the linear actuator main-body (2), and oil (L) having insulating characteristic and filled up within the case (3) so as to soak a coil (44) of the linear actuator main-body (2). Such a composition enables the heat generated at the coil (44) to be radiated quickly to the oil (L), and transmitted to the case (3) intact. Since the oil (L) reaches the gaps of the coil (44) as a matter of course, heat can be discharged very efficiently. In such a way, a linear actuator capable of achieving compactness and weight-reduction can be provided, by improving the heat radiation characteristic thereof.

L'invention porte sur un actionneur linéaire qui comprend un corps principal d'actionneur linéaire (2), un boîtier (3) destiné à recevoir le corps principal de l'actionneur linéaire (2), et de l'huile (L) ayant des caractéristiques isolantes et remplissant le boîtier (3) de façon à immerger une bobine (44) du corps principal de l'actionneur linéaire (2). Une telle composition permet à la chaleur générée au niveau de la bobine (44) d'être rapidement rayonnée vers l'huile (L), et transmise au boîtier (3) intacte. Étant donné que l'huile (L) atteint les entrefers de la bobine (44) tout naturellement, la chaleur peut être évacuée très efficacement. De cette façon, un actionneur linéaire capable d'atteindre une certaine compacité et une réduction du poids peut être produit, par amélioration de sa caractéristique de rayonnement de la chaleur.

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