Expansion bushing for drive motor of electric vehicle

• Main Authors: TIAN WEIJIE, REN XIONGAN, WANG HAITAO
• Format: Patent
• Language: Chinese; English
• Published: 15.01.2014
• Subjects: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The utility model relates to an expansion bushing for the drive motor of an electric vehicle, which comprises a shaft coupling (1), a flange (3) and a motor shaft sleeve (7). The shaft coupling (1), the flange (3) and the motor shaft sleeve (7) are coaxially arranged. The expansion bushing also comprises an expansion bushing structure (2) composed of an inner expansion ring (8), an outer expansion ring (9), a left conical ring (10), a right conical ring (11) and a screw (12). The inner expansion ring (8) is sleeved onto the shaft coupling (1). The left conical ring (10) and the right conical ring (11) are in cooperation with the inner expansion ring (8) and the outer expansion ring (9) respectively. The outer expansion ring (9) is sleeved onto the interior of the flange (3). The interiors of the left conical ring (10) and the right conical ring (11) are in threaded connection with the screw (12) cooperatively. According to the technical scheme of the utility model, the expansion bushing has the advantages of