Method of forming a housing having a thin wall and the housing
AssigneeKabushiki Kaisha Toshiba
InventorHiroaki Hirao
Life of this patent
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Abstract
According to one embodiment, a housing is formed by using a pair of metal molds. The housing includes a first wall, second walls projecting from the first wall, and bosses projecting from the first wall. A molten material is filled into a molding space defined between the metal molds, and thereby a molded article having a shape corresponding to the housing is molded. The molded article has a plurality of first pin-receiving portions serving as the bosses, and a plurality of second pin-receiving portions projecting from the second walls. The first and the second pin-receiving portions are pushed by a plurality of ejector pins, and thereby the molded article is ejected from the metal molds.
Claims16
A method of forming a housing having a first wall, a plurality of second walls projecting from the first wall, and a plurality of bosses projecting from the first wall at positions different from positions of the second walls, the method comprising:
- preparing a pair of metal molds;
- filling a molten material into a molding space defined between the metal molds, and thereby molding a molded article having a shape corresponding to the housing, the molded article having a plurality of first pin-receiving portions serving as the bosses and a plurality of second pin-receiving portions projecting from the second walls;
- and
- ejecting the molded article from the metal molds by pushing the first pin-receiving portions and the second pin-receiving portions of the molded article by a plurality of ejector pins.
A method of forming a housing having an end wall and a peripheral wall standing from an edge of the end wall, the method comprising:
- preparing a pair of metal molds;
- filling a molten material into a molding space defined between the metal molds, and thereby molding a molded article having a shape corresponding to the housing, the molded article having a plurality of pin-receiving portions in a peripheral area in the end wall, the peripheral area extending along the peripheral wall;
- and
- ejecting the molded article from the metal molds by pushing the pin-receiving portions of the molded article by a plurality of ejector pins.
A method of forming a housing having a wall of a basic thickness and a plurality of projections, the projections projecting from the wall and scattered over a wide range of the wall, the method comprising:
- preparing a pair of metal molds;
- filling a molten material into a molding space defined between the metal molds, and thereby molding a molded article having a shape corresponding to the housing;
- and
- ejecting the molded article from the metal molds by pushing portions of the molded article corresponding to the projections by a plurality of ejector pins.
A housing formed by filling a molten material between a pair of metal molds, the housing comprising:
- a first wall having a basic thickness;
- a plurality of second walls projecting from the first wall and having a plurality of pin-receiving portions;
- and
- a plurality of bosses projecting from the first wall at positions different from positions of the second walls,
- wherein the pin-receiving portions and the bosses are pushed by a plurality of ejector pins when the housing is ejected from the metal molds.
Dependencies are inferred from the claim text.