US 12,392,800 B2
Test head for a finger tester, and method for testing printed circuit boards
Christian Weindel, Oelbronn-Duerr (DE); and Bernd Ott, Kuenzelsau (DE)
Assigned to ATG LUTHER &MAELZER GMBH, Wertheim/Reicholzheim (DE)
Appl. No. 18/564,845
Filed by atg Luther & Maelzer GmbH, Wertheim/Reicholzheim (DE)
PCT Filed Jun. 3, 2022, PCT No. PCT/EP2022/065184
§ 371(c)(1), (2) Date Nov. 28, 2023,
PCT Pub. No. WO2022/254005, PCT Pub. Date Dec. 8, 2022.
Claims priority of application No. 10 2021 114 443.4 (DE), filed on Jun. 4, 2021.
Prior Publication US 2024/0385215 A1, Nov. 21, 2024
Int. Cl. G01R 1/067 (2006.01); G01R 1/02 (2006.01); G01R 1/073 (2006.01); G01R 31/26 (2020.01); G01R 31/28 (2006.01)
CPC G01R 1/06705 (2013.01) [G01R 31/2808 (2013.01)] 17 Claims
OG exemplary drawing
 
1. Test head for a finger tester for testing printed circuit boards, comprising
a slide which can be arranged movably on a traverse of the finger tester,
a holding module for holding a swivel arm which is adapted to receive a test probe at the free end remote from the holding module,
a lifting device by means of which the holding module is adapted to be movable in a vertical direction relative to the slide, the lifting device comprising a vertical guide rail with a rolling bearing, and
a swivel device for rotating the holding module and thus the pivoting arm about a vertical axis of rotation, the swivel device comprising a motor for rotating the swivel device, wherein
the swivel device comprises a shaft or axis, wherein a rotating member of the swivel device is arranged concentrically to the shaft or axis so that the rotating member surrounds the shaft or axis and the rotating member is either mounted on the axis with at least one bearing or is mounted via the shaft on the slide with at least one bearing, and
the motor is formed as a direct drive, wherein the rotating member forms the rotor of the motor.