Angle test apparatus for torsion spring

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, in testing, a tested torsion spring is placed on the board with its first leg being sandwiched between the pin and the limiting block, the first and second sidewalls are operable to be moved towards the second leg in turn while the bottom wall is sliding 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.