| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve the problem wherein, since a section fitting an oil-keeping device supporting the rotary shaft of a rotor and keeping grease to the hole of a stator is configured as a unit so as to make the fast-rotating rotary shaft of the of an electronic timepiece and a central axis of the hole of a stator coincide with high precision, a structure of oil-keeping device would be complex and is thus, constrained to use only at a bearing with stator. <P>SOLUTION: Because a stator guide fitting to the hole of a stator and the oil-keeping device supporting the rotary shaft of a rotor and keeping grease are configured as different components and both the stator guide and the oil-keeping device are fit to the hole of cylindrical shape, without bump prepared on a bottom board, the bearing can be composed making the central axis of hole of stator and the rotary shaft of rotor in agreement with high precision, while structure is simplified of the keeping oil device so that is can be used in a bearing that has no stator. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
