| 摘要 |
PURPOSE:To prevent deterioration of a seal member for improving the life thereof by a method wherein a high temperature oil scattered inside a locker cover is prevented from acting directly on the seal member. CONSTITUTION:A cylinder wall 23 is folded inwardly and formed as an oil injecting inlet 22 on a lock cover 21, and a circular cavity part 24 is formed surrounding said cylindrical wall 23. A notch 25 and a cam shaped end surface 26 are formed on the bottom surface of said circular cavity part 24. On the other hand, an oil filler cap 27 is provided with a projecting cylindrical part 29 having a diameter possibl to be inserted into said cylindrical wall 21, and a circular step part 30, surrounding said cylinder part 29, with a diameter possible to be inserted into said circular cavity part 21 of the lock cover 21 is formed projecting in one step from the lower surface of a head part 28. An annular seal number 31 is fitted in a base part of the circular step part 30, and an O ring 33 is mounted by providing a groove 32 on the peripheral surface in the side of the circular step part 30. Moreover, a click piece 34 engaged rotatably with the cam shaped end surface 26 of the lock cover 21 is fixed on the tip surface of the cylindrical part 29 via a machine screw 35. |
