Integrated interlock feature for overmolded coil and bobbin
AssigneeGM Global Technology Operations LLC
InventorCarl E. FONVILLE
Life of this patent
Estimating the term…
Abstract
An electromagnetic solenoid is provided with a bobbin having a generally cylindrical body and a pair of radially outwardly extending end flanges each disposed at opposite ends of the generally cylindrical body. The pair of end flanges each have an inner face facing one another and an outer face facing away from one another. The inner and outer faces of the pair of end flanges have a plurality of grooves formed in a surface thereof. The grooves provide for enhanced retention of an over-mold that seals a coil within the bobbin assembly.
Claims17
An electromagnetic solenoid, comprising:
- a bobbin having a generally cylindrical body and a pair of radially outwardly extending end flanges each disposed at opposite ends of the generally cylindrical body, said pair of end flanges each having an inner face facing one another and said pair of end flanges each having an outer face facing away from one another, said inner and outer faces of said pair of end flanges having a plurality of grooves formed in a surface thereof;
- a coil received around said generally cylindrical body of said bobbin between said pair of radially outwardly extending end flanges;
- an over-mold formed over said bobbin and said coil, said over-mold being received in said grooves in said inner and outer faces of said end flanges of said bobbin;
- and
- a plunger received in said bobbin.
An overmolded bobbin and coil assembly for a solenoid, comprising:
- a bobbin having a generally cylindrical body and a pair of radially outwardly extending end flanges each disposed at opposite ends of the generally cylindrical body, said pair of end flanges each having an inner face facing one another and said pair of end flanges each having an outer face facing away from one another, said inner and outer faces of said pair of end flanges having a plurality of grooves formed in a surface thereof;
- a coil received around said generally cylindrical body of said bobbin between said pair of radially outwardly extending end flanges;
- and
- an over-mold formed over said bobbin and said coil, said over-mold being received in said grooves in said inner and outer faces of said end flanges of said bobbin.
A bobbin for use with an electro-magnetic solenoid, comprising:
- a spool-type bobbin having a generally cylindrical body and a pair of radially outwardly extending end flanges each disposed at opposite ends of the generally cylindrical body, said pair of end flanges each having an inner face facing one another and said pair of end flanges each having an outer face facing away from one another, said inner and outer faces of said pair of end flanges having a plurality of grooves formed in a surface thereof,
- wherein said grooves in said surface of said inner face of said pair of end flanges are generally perpendicular to said grooves in said surface of said outer face of a corresponding one of said pair of end flanges,
- wherein said bobbin includes a pair of annular dovetail grooves on opposite sides of said bobbin.
15-16. (canceled)
A bobbin for use with an electro-magnetic solenoid, comprising:
- a spool-type bobbin having a generally cylindrical body and a pair of radially outwardly extending end flanges each disposed at opposite ends of the generally cylindrical body, said pair of end flanges each having an inner face facing one another and said pair of end flanges each having an outer face facing away from one another, said inner and outer faces of said pair of end flanges having a plurality of grooves formed in a surface thereof,
- wherein inner and outer faces of said pair of end flanges are separated into four quadrants and said grooves in each quadrant are generally perpendicular to said grooves in an adjacent quadrant of that face.
Dependencies are inferred from the claim text.