| 摘要 |
PURPOSE:To provide low production costs and restrain increase in the transportation cost of a housing as much as possible by constituting the housing of a molded metal sheet, and forming a fitting and retaining section for a plug to be fitted and held in the oil seal of a shaft penetration hole. CONSTITUTION:Plugs 20 and 20 for preventing oil outflow are fitted to and held in the shaft penetration holes 14 and 14 of a housing 11 in a transmission unit 10, with fitting and retaining sections 20a and 20b pressed and fitted in oil seals 15 and 15, and flange sections 20c and 20c adhered to the sides of the oil seals 15 and 15 and to the outer side of the housing 11. According to the construction, the shaft penetration holes 14 and 14 of the transmission unit 10 are closed with the plugs 20 and 20 and, therefore, lubricating oil residual in the housing 11 does not flow outside during the transportation thereof. Also, dust or the like does not enter the housing 11 during the transportation. |
