摘要:
There is provided a compact, noncontact rotary position sensor that accurately detects a rotary position of a rotating object. A magnetism throttling portion is provided in a midway point of a magnetic path. Two magnetic induction elements are disposed adjacently each other at the magnetism throttling portion. This arrangement effectively allows a magnetic flux to converge at the location, at which the magnetic induction elements are mounted. A noncontact rotary position sensor offering high sensitivity and high accuracy can then be obtained. It is also possible to simplify routing of signal lines from the two magnetic induction elements, since the two magnetic induction elements are adjacent to each other.
摘要:
A ball support structure comprises a ball and a ball support movably holding the ball. The ball support is formed with a ball receiving recess defined by a semispherical portion and a cylindrical portion. A through hole aligning with the ball receiving recess and passing through the ball support is formed. The ball is disposed in the ball receiving recess of the ball support and then the ball support is axially pressed at the peripheral of the ball receiving recess so that metal of part of the ball support flows to contact with the ball thereby to provide a partially spherical portion. The ball is pushed by a rod through the through hole when the partially spherical portion is formed, so that the ball and the semispherical portion has a small gap.
摘要:
A resistance welding structure and a resistance welding method may form a highly reliable welded part by applying a proper pressurizing force and a proper heat value to a joining portion. Also provided are a member to be welded which is suitable for carrying out these resistance welding structure and resistance welding method, and a method of manufacturing the member to be welded. A member to be welded is formed with a recessed portion on one surface of a raw material formed of a metal plate, and a projection is formed on a back surface of the recessed portion. Assuming a plate thickness of the raw material in the inside of the recessed portion and around the periphery of the projection as D2, and a plate thickness of the raw material outside the recessed portion 2 as D3, the plate thicknesses of the respective portions have the relationship of D2