Title:
SHIELDING ROTATION TRANSMISSION MECHANISM, MOTOR/INVERTER TEST BENCH USING SAME, AND EMC TEST EQUIPMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/177408
Kind Code:
A1
Abstract:
During EMC testing of electric motors, a rotation transmission device that penetrates a wall in an anechoic chamber has been unable to achieve high rotation and high torque, using the skipping rope phenomenon. In order to achieve rotation transmission at high rotation and high torque, a fiber-reinforced plastic shaft is supported by a bearing inside a conductive housing; and a conductive brush that blocks a space between the housing and the shaft surface is provided so as to provide electrical conduction between the housing and the shaft and prevent radio wave leakage. A plurality of bearings could be used, excluding at both ends, in order to achieve rotation transmission at high rotation and high torque.
Inventors:
NAKAYAMA MASARU (JP)
KAJITANI KOJI (JP)
KAJITANI KOJI (JP)
Application Number:
PCT/JP2021/008455
Publication Date:
September 10, 2021
Filing Date:
March 04, 2021
Export Citation:
Assignee:
OHTAMA CO LTD (JP)
TODA RACING CO LTD (JP)
TODA RACING CO LTD (JP)
International Classes:
H05K9/00; G01R31/34; H02K11/20
Domestic Patent References:
| WO2010055578A1 | 2010-05-20 |
Foreign References:
| CN103149480A | 2013-06-12 | |||
| JP2007196681A | 2007-08-09 | |||
| JPS62109494U | 1987-07-13 |
Attorney, Agent or Firm:
KUZUWA, Kiyoshi (JP)
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