Bolt-nut fastening mechanism

Details Bolt-nut fastening mechanism Bolt-nut fastening mechanism

2004-09-14

2010-12-28

Estremsky, Gary (Department: 3677)

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Washer structure

Spacer

C411S433000

Reexamination Certificate

active

07857567

ABSTRACT:
Clearance can be secured, the thrust of a bolt provided with a left-hand external screw thread is stabilized and the costs of component members are reduced in attaching a steering member to a body frame. A bolt-and-nut fastening mechanism includes a right-hand bolt4provided with a metal-to-metal contact locking mechanism7on a threaded part, a left-hand bolt5provided with an internal screw thread8with which the bolt engages, and a fixing nut6capable of engaging with the left-hand screw thread9of the left-hand bolt5or a member14provided with an internal screw thread with which the left-hand screw thread9of the left-hand bolt5engages. The locking mechanism7of the bolt4thrusts the left-hand bolt5forward so that the gap between the top surface13of the head of the left-hand bolt and an inner panel2is narrowed, and the head of the left-hand bolt5comes into contact with the inner panel2to define a clearance between a body frame and the bracket3of a steering member. The bolt4is screwed into the left-hand bolt5and the base surface11of the bolt comes into contact with an outer panel1to produce a fastening force. The fastening force is transmitted through the left-hand bolt5to attach the steering member. A welded nut6may be omitted and an internal screw thread15with which the left-hand bolt engages may be formed in the bracket14of the steering member.

REFERENCES:
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patent: 2002-347656 (2002-04-01), None
patent: 2002/10595 (2002-02-01), None
Patent Abstract of Japan Publication No. 08-128430 Published May 21, 1996.
Patent Abstract of Japan Publication No. 08-334114 Published Dec. 17, 1996.
Patent Abstracts of Japan of JP 2002-347656 dated Apr. 12, 2002.
Patent Abstracts of Japan of JP 11-117927 dated Apr. 27, 1999.

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