Electricity: conductors and insulators – Conduits – cables or conductors – Combined
Patent
1989-10-05
1991-06-04
Nimmo, Morris H.
Electricity: conductors and insulators
Conduits, cables or conductors
Combined
29868, 156 49, H02G 15113
Patent
active
050216112
ABSTRACT:
Disclosed herein is a waterproof joint for a joint section of a plurality of wires of a wireharness, each wire having a conductor and an insulating cover surrounding the conductor, and the joint section comprises a connecting portion of the conductors and the insulating covers of the wires near the connecting portion. The waterproof joint comprises a thermally shrinkable joint member including a thermally shrinkable sheet having an inner surface and a thermoplastic layer of thermoplastic material formed on the inner surface of the thermally shrinkable member, the thermally shrinkable member being adapted to be wound around the joint section in such a manner that the thermally shrinkable layer faces the joint section, and a secondary sealing member formed of a thermoplastic material for filling up spaces between the wires of the joint section when heat is applied thereto in cooperation with the thermoplastic material of the thermoplastic layer, the secondary sealing means being provided within the thermally shrinkable joint member. Therefore, when heat is applied to the thermally shrinkable joint member, the thermally shrinkable sheet is shrunk and the thermoplastic material of the thermally shrinkable layer and the secondary sealing means is melted, after which the melted thermoplastic material spreads within the thermally shrinkable sheet so as to seal spaces between the thermally shrinkable sheet and the wires by penetrating into the spaces between the wires with the assistance of of the shrinking force from the thermally shrinkable sheet.
REFERENCES:
patent: 3467761 (1969-09-01), Plummer
patent: 4532168 (1985-07-01), Steele et al.
patent: 4590328 (1986-05-01), Kunze
patent: 4647716 (1987-03-01), Akiyama et al.
patent: 4693767 (1987-09-01), Grzanna et al.
Nimmo Morris H.
Yazaki -Corporation
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