Plastic molding on penetration metal, particularly on motor end

Details Plastic molding on penetration metal, particularly on motor end Plastic molding on penetration metal, particularly on motor end

1988-02-02

1989-07-11

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

264135, 2642722, 264273, 310 43, 310 71, 310 89, 310 91, 425385, 439736, B32B 110, H01R 1340, H02K 1514

Patent

active

048475289

ABSTRACT:
A composite unit including metal and resin wherein a metal member and a resin member are formed integrally. A seal film made of resin or rubber having high affinity to metal and characterized by flexibility is interposed between contact surfaces of the metal member and the resin member. The seal film is formed of a dispersion having as its main component a copolymer of alkyl methacrylate-alkyl acrylate. The metal member is formed of an Fe group material and the resin member is formed of polyamide resin. The seal film, after being coated on the outer surface of the metal member as a liquid material is embedded in the resin member by insert-molding resin. The metal member is formed to provide a bracket of a starter motor and the resin member to provide a brush holder. A seal member made of rubber is baked onto the contact surfaces between the bracket and the brush holder, and the seal member is embedded in the brush holder made of resin.

REFERENCES:
patent: 4505971 (1985-03-01), Martin, Jr.
patent: 4603023 (1986-07-01), Mack et al.
patent: 4626721 (1986-12-01), Ouchi
patent: 4673836 (1987-06-01), Akiyama et al.
patent: 4684421 (1987-08-01), Tate
patent: 4691430 (1987-09-01), Wheeler

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