Actuator, Method Of Manufacturing Actuator Case Thereof, And Core For Manufacturing

Abstract: According to the present invention, in an actuator case, an attachment groove to which an attachment portion of a boot is to be attached is formed on an inner peripheral face of an output hole to enable protection of the attachment portion from outside impact, and to enable formation of the attachment groove at the same time as molding of the actuator case with a resin. A plurality of first protruding walls that protrude inward in the radial direction and are arrayed at first intervals in a circumferential direction of the output hole are formed in an outer edge portion of the output hole. A plurality of second protruding walls that protrude inward in the radial direction and are arrayed at second intervals in a circumferential direction of the output hole are formed in an inner edge portion of the output hole. The first and second protruding walls are arranged not to overlap in a plan view of the output hole. The first and second protruding walls define the attachment groove to which the attachment portion of the boot is to be attached, on the inner peripheral face of the output hole.

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