Electrical connectors – Coupling part including flexing insulation – Sealing
Patent
1995-07-10
1997-09-16
Nguyen, Khiem
Electrical connectors
Coupling part including flexing insulation
Sealing
H01R 1340
Patent
active
056674066
ABSTRACT:
A waterproof seal has at its rear portion a wire embracing portion for embracing an outer periphery of a wire. The wire embracing portion includes a flexible tubular portion having a reduced thickness, and a thickened tubular portion extending from the flexible tubular portion. Because buckling strength is enhanced by the thickened tubular portion, the wire can be smoothly passed through the waterproof seal from the distal end of the wire embracing portion without buckling the wire embracing portion and hence without closing an insertion hole. The flexible tubular portion is easily bent about an inner peripheral lip in accordance with the movement of the wire, thereby preventing the bending force from acting on and deforming the main waterproof portion. Alternatively, a groove is formed in one end surface of a rubber plug body, and is disposed around an outer periphery of a proximal end of a tubular portion connected to the rubber plug body. Tension is alleviated between the proximal end of the tubular portion and the rubber plug body in accordance with the deformation of the groove.
REFERENCES:
patent: 4643506 (1987-02-01), Kobler
patent: 5147222 (1992-09-01), Hotea et al.
Hayashi Hiroyuki
Tabata Masaaki
Nguyen Khiem
Sumitomo Wiring Systems Ltd.
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