Patent ID: 7497157
Filing Date: 2009-03-03
Classification: F02M,F04B,Y10T

Abstract:
1. A fuel supply pump having a tappet structural body which includes a roller and a tappet body portion which houses the roller, which supplies a fuel under pressure by pressurizing the fuel, wherein: a) the tappet body portion includes a body portion which has a roller receiver having an inner peripheral surface which conforms to an outer peripheral surface of the roller and a cylindrical slide portion which extends upwardly from an end portion of an upper surface of the body portion b) the roller is rotatably held by the roller receiver of the tappet body portion, c) the fuel supply pump includes plate-like restricting means which restrict a movement of the roller in the rotary axis direction, d) each of the plate-like restricting means is constituted by extending a portion of the peripheral portion of a spring seat in a direction toward each end of the roller, e) each of the plate-like restricting means is inserted in an insertion hole which is formed in the tappet body portion between an inside of the cylindrical slide portion and an outside of the tappet body portion and the spring seat is housed inside of the cylindrical slide portion, and f) a gap is formed around the plate-like restricting means in the insertion hole.