| 摘要 |
PURPOSE: To facilitate the demounting of a chuck key from a tool housing by providing an ejector member in a second hole provided in the tool housing, the ejector member being used for demounting the chuck key from the housing by demounting a key head and moving the same through the first hole to the outside. CONSTITUTION: For demounting a chuck key 16 from a tool housing 12, an ejector pin 42 is pushed through the route of a second hole 44 provided in the housing 12 into an internal direction by a user, thereby brought into contact with the key 16, and the head part 32 of the key 16 is moved along the axis of a first hole 26 by a distance S. By this movement, the heat part 32 of the chuck key 16 is demounted from fastening fitting with the inner surface 36 of a first wall part 34 in the first hole 26. Thus, the user demounts the chuck key 16 from the tool housing only by operating the ejector pin 42 with a finger. |
