Method for resin insert molding a connector block for injectors of an internal combustion engine
AssigneeSumitomo Wiring Systems, Ltd.
InventorsMitsuhiro Fujitani, Hisashi Konoya
Life of this patent
Estimating the term…
Abstract
A connector block for injectors of an internal combustion engine having a bar-like body in which bar-like bus bars are arranged in a parallel attitude and embedded in resin. A core member includes bus bar slots in which the bus bars are placed in a desired attitude. Projections are positioned such that they butt against the inner wall of a mold cavity of a mold for resin molding. Holding-pin holes into which holding pins of the mold cavity are fitted so as to form a separation layer between the bus bars and the holding pins. The assembled core member is inserted into the mold cavity of the mold for resin molding, to be held thereby, and the core member is embedded in a resin to form a desired shape.
Claims12
A method for insert molding a connector having at least one metal member, said method comprising the steps of:
- providing a core having a plurality of slots;
- placing the at least one metal member in a molding position by inserting the at least one metal member within a corresponding slot of the core, the at least one metal member and the core forming a molding assembly;
- inserting the molding assembly into a mold cavity formed of a separable mold by fitting portions of holding pins extending from a mold surface into the mold cavity into holding pin holes formed in the core, the holding pin holes being positioned to create a separation layer between surfaces of the holding pin holes and the metal members, the core having positioning projections butting against an inner wall of the mold cavity;
- injecting the resin into the mold cavity around the molding assembly to form the connector;
- and
- separating the mold to free the connector.
A method for molding a connector having a bar shape, said connector including a resin, at least one metal band and a core member, the method comprising:
- providing the core member with a plurality of slots;
- placing the at least one metal band within a corresponding slot provided in one surface of the core member to form a molding assembly;
- inserting the molding assembly within a mold cavity of a mold;
- injecting the resin into the mold cavity to enclose the molding assembly and form the connector;
- and
- removing the connector from the mold.
A method for molding a connector, comprising:
- mounting at least one bus bar in a preformed core, the preformed core having a retention channel for each bus bar of the at least one bus bar to form a molding assembly, a surface of the core, opposite a surface having the at least one retention channel, having at least one holding pin hole;
- mounting the molding assembly to a first mold by mating the at least one holding pin hole with a corresponding holding pin extending from the first mold, the mounting providing a separation between the molding assembly and the first mold;
- joining a second mold to the first mold to define a cavity retaining the molding assembly therein, the second mold having a spacing from the molding assembly;
- injecting resin into the cavity;
- and
- removing the first mold and second mold to free the connector so formed, wherein the at least one retention channel and the at least one holding pin hole are separated from one another with a portion of the core therebetween.
A method for molding a connector block having an elongate body for injectors of an internal combustion engine, comprising the steps of:
- providing a core member that extends along at least a majority of the length of the elongate body, said core member having a plurality of slots;
- seating a plurality of band-shaped bus bars in the plurality of slots, said plurality of bus bars being arranged parallel to one another;
- embedding said core member in a resin;
- forming a wire harness connecting portion at one end of the elongate body, said plurality of bus bars having tip ends exposed in said connecting portion;
- and
- forming injector connecting portions at a plurality of positions on the elongate body for connecting said bus bars through junction terminals located at said injector connecting portions to injectors of an internal combustion engine.
A method for molding a connector block having an elongate body for injectors of an internal combustion engine, comprising the steps of:
- providing a core member having a plurality of slots;
- accommodating band-shaped bus bars in said plurality of slots, said bus bars being arranged parallel to one another;
- embedding said core member in a resin, the resin disposed above said slots and molded over the bus bars so that at least a majority of continuous length of the bus bars is located between the resin and the core member;
- forming a wire harness connecting portion at one end of said elongate body, said bus bars having tip ends exposed in said connecting portion;
- and
- forming injector connecting portions at a plurality of positions on said elongate body for connecting said bus bars through junction terminals located at said injector connecting portions to injectors of an internal combustion engine.
Dependencies are inferred from the claim text.