Die for installing sealing fastener

Details Die for installing sealing fastener Die for installing sealing fastener

1991-05-01

1993-05-11

Eley, Timothy V.

Metal working

Method of mechanical manufacture

Assembling or joining

29798, 411179, B23P 1100

Patent

active

052089630

ABSTRACT:
A die member for joining a fastener to a panel includes a generally rectangular opening defined by two spaced apart opposed end walls, which receive the end walls of a pilot portion of a fastener. The end walls of the opening terminate into arcuate corners and are adapted to sheer and deform the pilot end walls of the fastener thereby forming bearing panel support abutments capable of providing a liquid tight seal between the panel and the fastener. The die member also includes clinching lips on opposed sides of the die opening. The clinching lips preferably include a top portion and tapered wall which deform the panel edges into grooved openings in the fastener thereby providing a liquid tight seal. The die opening is surrounded by a generally planar surface having an outer generally rectangular perimeter having generally arcuate corners. The generally arcuate corners form arcuate depressions within the panel when the die member operates on the fastener to attach it to the panel. The arcuate depressions resist stress fracturing of the panel when the panel and fastener assembly is subjected to high vibrational environments.

REFERENCES:
patent: 2750660 (1956-06-01), Newcomb
patent: 2799188 (1957-07-01), Newcomb
patent: 3299500 (1967-01-01), Double
patent: 3439723 (1969-04-01), Double et al.
patent: 3506050 (1970-04-01), Pouch et al.
patent: 3648747 (1972-03-01), Steward
patent: 3810291 (1974-05-01), Ladouceur
patent: 3811171 (1974-05-01), Grube
patent: 3878599 (1975-04-01), Ladouceur et al.
patent: 4064617 (1977-12-01), Oaks
patent: 4630363 (1986-12-01), Woods

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