Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Member preassembled with substructure at through-passage or...
Reexamination Certificate
2001-10-10
2004-02-10
Saether, Flemming (Department: 3679)
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Threaded fastener locked to a discreet structure
Member preassembled with substructure at through-passage or...
C411S005000, C411S352000, C411S999000
Reexamination Certificate
active
06688823
ABSTRACT:
This application is a U.S. National Phase Application under 35 USC 371 of International Application PCT/JP01/00740 (published in English) filed Feb. 2, 2001.
TECHNICAL FIELD
The invention relates to a bolt capable of fastening members disposed with a spacing therebetween while absorbing dispersion such as spacing, dislocation of center or the like, and to a mount construction for the members with the use of the bolt.
BACKGROUND ART
For example, in the case where both ends of a lengthy member called an instrument panel reinforcement
52
(referred below to as “reinforcement”) are to be bolted to an end surface of a motor car body
51
, dispersion in accuracy of press work and assembly of the car body
51
and the reinforcement
52
results in that bolt mount positions as well as the car body
51
and the reinforcement
52
give rise to dispersion. Conventionally, bolting on the car body
51
is performed by providing an adjustment member
53
, which is L-shaped in horizontal cross section, on one side of the reinforcement
52
and making use of slots
54
of the adjustment member
53
to adjust relative positions of the adjustment member
53
and the reinforcement
52
. However, the use of such adjustment member
53
causes problems that the number of parts is increased as compared with the case of direct bolting of the reinforcement
52
and the number of bolts being fastened is increased leading to an increase in man-hour in the fastening operation.
DISCLOSURE OF INVENTION
The invention is devised to solve the above-mentioned problems of the prior art and to provide a bolt capable of surely and easily fastening members, between which is a spacing involving dispersion in dimensional accuracy, without the use of any adjustment member, while absorbing such dispersion, and a mount construction for members with the use of the bolt.
The bolt of the invention devised to solve the above-mentioned problems has a feature in comprising a cylindrical-shaped collar bolt formed at an upper portion of an outer peripheral edge thereof with male threads, and a bolt body formed at a lower portion of an outer peripheral surface thereof with male threads and having a head at an upper portion thereof, the collar bolt being mounted on a shank of the bolt body between a portion, where the male threads are formed, and the head so that engagement between the collar bolt and the bolt body is released upon application of torque having a predetermined value or more.
REFERENCES:
patent: 2761484 (1956-09-01), Sternick
patent: 3770036 (1973-11-01), Sherman
patent: 4068555 (1978-01-01), Volkman
patent: 5807052 (1998-09-01), Van Boven
patent: 0 373 049 (1990-06-01), None
patent: 0 534 001 (1993-03-01), None
Ito Shuji
Kakamu Hideki
Utsuno Ryuji
Yabuoshi Masahito
Aoyama Seisakusho Co., Ltd.
Frishauf Holtz Goodman & Chick P.C.
Saether Flemming
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