| 摘要 |
PURPOSE:To prevent the damage of a seal by leading in one end of a hollow tube together with a power feeding wire to a roller housing through a shaft member, and drawing out the other end to the area of no seal outside the housing, in a motor roller for a roller conveyer. CONSTITUTION:When the inner air pressure in a roller housing 11 rises, the pressure in the housing is released through a hollow tube 40. Therefore, a sealing device 24 is prevented from a damage by the inner pressure of the housing 11. As a result, the damage of the electric circuit system resulting from the invasion of oil or water into a motor roller 10 can be prevented.
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