Angle test apparatus for torsion spring

摘要

An apparatus for testing an angle between first and second legs of a torsion spring includes a board, a limiting block and a pin sandwiching the first leg, a positioning member positioning a main body of the torsion spring with the limiting block, and a test block including a bottom wall slidably contacting the limiting block, and a first sidewall and a second sidewall. Angles between the bottom wall and the first and second sidewalls are respectively minimal and maximal values that equal 180 degrees subtracted by an angle within a qualified range between the first and second legs. The first and second sidewalls is moved toward the second leg in turn. If a bottom end of the first sidewall and a top end of the second sidewall both can contact the second leg, the angle between the first and second legs is qualified. Otherwise, the angle is unqualified.

主权项

1. An angle test apparatus for testing whether an angle between a first leg and a second leg of a torsion spring with a twisted main body is qualified or not, the angle test apparatus comprising:
a board; a limiting block mounted to a first side of the board; and a pin mounted on the board and adjacent to the limiting block, for sandwiching the first leg together with the limiting block; a positioning member slidably mounted to a second side of the board opposite to the limiting block, for sandwiching the main body of the torsion spring together with the limiting block; and a test block supported on the board, and comprising a bottom wall, a first sidewall and a second sidewall slantingly connected to opposite ends of the bottom wall, angles between the bottom wall and the first and second sidewalls are respectively minimal and maximal values that equals 180 degrees subtracted by an angle within a qualified range between the first and second legs; wherein, a tested torsion spring placed on the board with its first leg being sandwiched between the pin and the limiting block, the first and second sidewalls operable to move towards the second leg, the bottom wall is slidable along the limiting block to contact the second leg; if a bottom end of the first sidewall adjacent to the bottom wall and a top end of the second sidewall opposite to the bottom wall both are capable of contacting the second leg, an angle between the first and second legs of the tested torsion spring is qualified; otherwise, the angle between the first and second legs of the tested torsion spring is unqualified.