MANUFACTURE OF GEAR HOUSING OF ROTATION LEADING-OUT DEVICE FOR SPEEDOMETER

• Main Author: NOZAWA HISAO
• Format: Patent
• Language: English
• Published: 01.02.1988
• Subjects: ARTIFICIAL STONE; BASIC ELECTRIC ELEMENTS; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT; LIME, MAGNESIA; MEASURING; MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK; METALLURGY; PHYSICS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; REFRACTORIES; SEMICONDUCTOR DEVICES; SLAG; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TESTING; TREATMENT OF NATURAL STONE

PURPOSE:To easily form a grease pocket simultaneously with the molding of a gear housing by forming a partially deformed part in a bearing hole by utilizing the difference in the shrinkage of a thickness variation part at a cylindrical part at the time of its formation when the gear housing is molded. CONSTITUTION:The gear housing 1 is molded out of acetal resin with which glass fibers are mixed. At this time, a thickness part 11 is formed on one side of the cylindrical part 10 forming the bearing hole 6 as the thickness variation part which differ in in-molding shrinkage and the bearing hole is deformed partially by the difference in in-formation shrinkage between the thickness part 11 and other parts, thereby forming the grease pocket 12. This thickness part is made axially long to mold a longitudinal groove grease pocket or provided around the outer periphery of the cylindrical part to form an annular groove type grease pocket.