Component having insert for receiving threaded fasteners
AssigneeROLLS-ROYCE plc
InventorsMatthew P. FITT, Benjamin G. TAYLOR
Life of this patent
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Abstract
A component formed of a plastic matrix composite material is provided. The component has a metal liner which is fixed in a correspondingly shaped recess formed in the composite material. The liner has a threaded bore into which is screwed an externally threaded, hollow cylindrical, metal insert. The insert has an internal thread for receiving threaded fasteners. The mouth of the bore has engagement formations which engage with the insert to prevent rotation of the insert in the bore, an adjacent part of the insert being plastically deformed to engage with the engagement formations after being screwed into the bore.
Claims15
A component formed of a plastic matrix composite material, the component having a metal liner which is fixed in a correspondingly shaped recess formed in the composite material, and the liner having a threaded bore into which is screwed an externally threaded, hollow cylindrical, metal insert;
- wherein the insert has an internal thread for receiving threaded fasteners, and the mouth of the bore has engagement formations which engage with the insert to prevent rotation of the insert in the bore, an adjacent part of the insert being plastically deformed to engage with the engagement formations after being screwed into the bore.
A combination of a metal liner and a metal insert which are used for attaching threaded fasteners to a component, wherein:
- the liner is adapted for fixing in a correspondingly shaped recess formed in the component, the liner having a threaded bore;
- the insert is cylindrical, hollow and externally threaded such that it can be screwed into the bore;
- the insert has an internal thread for receiving threaded fasteners, and the mouth of the bore has engagement formations which are engageable with the insert to prevent rotation of the insert in the bore, an adjacent part of the insert being plastically deformable to engage with the engagement formations after being screwed into the bore;
- and
- the outer surface of the liner is shaped to prevent rotation of the liner in the recess.
Dependencies are inferred from the claim text.