TIGHTENING STRUCTURE FOR BOLT AND NUT

• Main Authors: YONETANI NOBUO, MIWA JIRO, GOTO MASAKI, MIURA YOSHIAKI
• Format: Patent
• Language: English
• Published: 09.02.1999
• Edition: 6
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; BLASTING; DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To fixedly position a bolt and a nut high accurately by a constitution and assembly work simplified with a cost reduced. SOLUTION: An external thread part 21 is formed with a shift lever main body 12 made by steel, on the other hand, an internal thread part 25 and an end screw part 26 are formed with a knob main body 22 made by zinc softer than steel. In the external thread part 21 of the shift lever main body 12, a nylon-made film material is interposed, the internal thread part 25 of a knob 14 is screwed, and the external thread part 21 bites in the end screw part 26 beyond the internal thread part 25, so as to fixedly position the knob 14 firmly and high accurately in the shift lever main body 12.