DRIVE UNIT FOR WHEEL

• Main Authors: HAYASHI HISASHI, WAKABAYASHI TATSUO, NAGANO MASATO
• Format: Patent
• Language: English
• Published: 02.02.2012
• Subjects: AXLES FOR WHEELS OR CASTORS; BEARINGS; BLASTING; BRAKES; CASTORS; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; CLUTCHES; COUPLINGS FOR TRANSMITTING ROTATION; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; INCREASING WHEEL ADHESION; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLE WHEELS; VEHICLES IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To achieve a structure capable of sufficiently shortening the length of the spline shaft 5c of a constant-velocity joint 4c while preventing damage such as a crack, achieving sufficient downsizing and weight reduction, and performing the separation work of a roller bearing unit 1c for wheel support from the constant-velocity joint 4c without the need of a special tool.SOLUTION: Stop rings 7b and 7c are locked to two positions on the outer circumferential surface of the spline shaft 5c, and axial-direction both-end openings of a spline hole 19 are pressed by both stop rings 7a and 7b. Then, the relative displacement of a hub 2c and the spline shaft 5c in the axial direction is blocked.