초록 ▼

A device for determining geometrical defects in a vehicle wheel comprises, for measuring the eccentricity of the wheel rim (5) and of the wheel (4), means (7) to be positioned in contact alternately with the tyre (6) and with the wheel rim (5) of the wheel of which the eccentricity is to be measured

A device for determining geometrical defects in a vehicle wheel comprises, for measuring the eccentricity of the wheel rim (5) and of the wheel (4), means (7) to be positioned in contact alternately with the tyre (6) and with the wheel rim (5) of the wheel of which the eccentricity is to be measured, a sensor (8) for measuring the angular position assumed by said means (7) about a fixed reference point (9), and means for associating and processing the data measured by said means (7) and by said sensor (8) to determine the angle through which the tyre (6) must be rotated on the wheel rim (5) to compensate their errors of shape. Said angular sensor (8) comprises a fixed part (80) carried by a shaft (23) associated with self-centering support means (21, 19, 200, 203) arranged to position it exactly coaxial with said wheel rim, and a movable part (81) rotatably mounted on said shaft (23).

대표청구항 ▼

A device for determining geometrical defects in a vehicle wheel comprises, for measuring the eccentricity of the wheel rim (5) and of the wheel (4), means (7) to be positioned in contact alternately with the tyre (6) and with the wheel rim (5) of the wheel of which the eccentricity is to be measured

A device for determining geometrical defects in a vehicle wheel comprises, for measuring the eccentricity of the wheel rim (5) and of the wheel (4), means (7) to be positioned in contact alternately with the tyre (6) and with the wheel rim (5) of the wheel of which the eccentricity is to be measured, a sensor (8) for measuring the angular position assumed by said means (7) about a fixed reference point (9), and means for associating and processing the data measured by said means (7) and by said sensor (8) to determine the angle through which the tyre (6) must be rotated on the wheel rim (5) to compensate their errors of shape. Said angular sensor (8) comprises a fixed part (80) carried by a shaft (23) associated with self-centering support means (21, 19, 200, 203) arranged to position it exactly coaxial with said wheel rim, and a movable part (81) rotatably mounted on said shaft (23). process during said movement while substantially preventing electronic component solder failures that occur as a result of the deflection of said printed circuit board during said solder reflow process. 2. The method according to claim 1, wherein the length of said elongated opening provided in said circuit board is greater than said length dimension of said electronic component positioned on said circuit board during said solder reflow process. 3. The method according to claim 1 wherein said elongated perforation is provided in said circuit board with a length dimension substantially longer than said length dimension of said electronic component and the length of said elongated opening. 4. The method according to claim 3 wherein said elongated opening is provided within said circuit board with a length greater than said length dimension of said electronic component.