US 12,009,143 B2
Method of producing a coil device, coil device, measuring transducer with coil device, instrument having a measuring transducer
Benjamin Schwenter, Breitenbach (CH); Marc Werner, Grenzach-Wyhlen (DE); and Claude Hollinger, Aesch (CH)
Assigned to Endress+Hauser Flowtec AG, Reinach (CH)
Appl. No. 17/266,980
Filed by Endress+Hauser Flowtec AG, Reinach (CH)
PCT Filed Jul. 30, 2019, PCT No. PCT/EP2019/070489
§ 371(c)(1), (2) Date Feb. 8, 2021,
PCT Pub. No. WO2020/030473, PCT Pub. Date Feb. 13, 2020.
Claims priority of application No. 10 2018 119 331.9 (DE), filed on Aug. 8, 2018.
Prior Publication US 2021/0313108 A1, Oct. 7, 2021
Int. Cl. H01F 27/28 (2006.01); G01F 1/84 (2006.01); G01N 9/00 (2006.01); H01F 41/04 (2006.01)
CPC H01F 27/2804 (2013.01) [G01F 1/8422 (2013.01); G01F 1/8427 (2013.01); G01N 9/002 (2013.01); H01F 41/043 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A coil device of an oscillation sensor or oscillation exciter of a measuring transducer or an instrument for measuring a density or a mass flow of a medium flowing through at least one measuring tube of the measuring transducer or instrument, comprising:
a circuit board having at least one circuit board layer, wherein each circuit board layer has a first face and an opposite, second face,
at least one coil adapted for registering or producing a time varying magnetic field, wherein the coil is embodied at least sectionally by using an electrically conductive trace, wherein the coil is arranged on the first face or second face of a circuit board layer,
wherein the at least one coil has a first coil end and a second coil end,
wherein the coil device has at least one of a plurality of contacting elements connected with the first coil end and at least one of the plurality of contacting elements connected with the second coil end, via which the at least one of the plurality of contacting elements the coil device is connectable using an electrical connection lines to an electronic measuring/operating circuit of an instrument,
wherein the circuit board has in an edge area at least one depression having a floor and a border,
wherein at least one of the plurality of contacting elements is arranged on the floor of each depression,
wherein at least one electrical connection line of the coil device has a first end, the first end is arranged in the depression,
wherein the depression is filled at least partially with a solid metal microparticle mass, which holds the first end and forms an electrical connection between the electrical connection line and the at least one of the plurality of contacting elements.