US 12,392,799 B2
Probe unit and holder for a probe unit
Matthias Rudkowski, Rhumspringe (DE)
Assigned to CARL MAHR HOLDING GMBH, Goettingen (DE)
Filed by Carl Mahr Holding GmbH, Goettingen (DE)
Filed on Apr. 12, 2023, as Appl. No. 18/133,687.
Claims priority of application No. 10 2022 109 267.4 (DE), filed on Apr. 14, 2022.
Prior Publication US 2023/0333140 A1, Oct. 19, 2023
Int. Cl. G01R 1/067 (2006.01); G01R 1/16 (2006.01)
CPC G01R 1/06705 (2013.01) [G01R 1/16 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A probe unit (27) for a measurement apparatus (20) configured to detect a measurement value at a measurement location of an object surface (21) in a contacting or contactless manner, the probe unit (27) comprising:
a support (28),
a probe element (29) arranged on the support (28) that is configured for probing the object surface (21) in a contacting or contactless manner,
a mounting device (31) provided on the support (28) that is configured to be mechanically connected with a holder (26) of the measurement apparatus (20), wherein the mounting device (31) comprises a contact unit (32) that defines a first longitudinal axis (L1) and that is configured to abut against a counter-contact unit (51) of the holder (26) of the measurement apparatus (20) in a contact position (P) so that a rotational degree of freedom in a circumferential direction (U) around the first longitudinal axis (L1) remains between the mounting device (31) and the holder (26), and wherein the mounting device (31) comprises at least one mounting magnet (40, 41, 42) that is configured to cooperate with at least one holding magnet (55, 56, 57) in the contact position (P) so that a magnetic axial force (FA) parallel to the first longitudinal axis (L1) is created between the mounting device (31) and the holder (26) and that a magnetic circumferential force (FU) in a circumferential direction (U) around the first longitudinal axis (L1) is created between the mounting device (31) and the holder (26) until a predefined rotational position (R) around the first longitudinal axis (L1) is reached between the mounting device (31) and the holder (26).