# US 12,113,407 B2 · Motor and electric device comprising such motor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,113,407 B2 - Document ID: US12113407B2 - Status: Granted - Kind: B2 - Application number: 17/607,112 - Filed: 2020-07-13 - Published: 2022-06-30 - Granted: 2024-10-08 - Earliest claimed: 2019-07-11 - Assignees: Gentherm Incorporated - Applicants: Gentherm GmbH - Inventors: Bob Bao; Loory Wang - Web page: https://patentgrep.com/patent/US12113407B2 ## CPC - H02K 11/40: Structural association with grounding devices - F04D 25/08: the working fluid being air, e.g. for ventilation - H02K 1/12: Stationary parts of the magnetic circuit - H02K 11/33: Drive circuits, e.g. power electronics (H02K11/38 takes precedence) - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) ## Abstract A motor that includes a stator having a stator core; a rotor; and a ground pin for at least achieving a ground connection of the stator core; the ground pin is configured to be electrically connected to the stator core by being partially embedded in the stator core. ## Claims ### Claim 1 A blower comprising: a motor comprising: an at least partially electrically conductive housing; a control device comprising a ground portion; a stator comprising a stator core; a rotor; and a ground pin for at least achieving a ground connection of the stator core, the ground pin comprising: a first portion partially embedded in the stator core; and a second portion electrically connected with the ground portion of the control device and/or the at least partially electrically conductive housing; wherein the ground pin is electrically connected to the stator core by being partially embedded in the stator core; and wherein the ground pin is completely contained within the at least partially electrically conductive housing. ### Claim 2 (depends on 1) The blower according to claim 1, wherein an insertion hole is formed inside of the stator core, and the first portion of the ground pin is inserted into the insertion hole to be electrically connected to the stator core. ### Claim 3 (depends on 2) The blower according to claim 2, wherein the first portion of the ground pin is fitted into the stator core in an interference fit. ### Claim 4 (depends on 3) The blower according to claim 3, wherein the first portion of the ground pin and/or the insertion hole is at least partially conical. ### Claim 5 (depends on 4) The blower according to claim 4, wherein the second portion of the ground pin comprises a first section for electrical connection with the ground portion of the control device and a second section for electrical connection with the at least partially electrically conductive housing; and/or the ground pin is configured as a straight pin; and/or the control device is configured as a printed circuit board assembly. ### Claim 6 (depends on 5) The blower according to claim 5, wherein the ground portion of the control device is configured as a through hole, and in an assembled state, the first section is located in the through hole so as to be electrically connected to the through hole. ### Claim 7 (depends on 6) The blower according to claim 6, wherein the first section is located in the through hole with an interference fit. ### Claim 8 (depends on 6) The blower according to claim 6, wherein the first section is located in the through hole additionally by welding. ### Claim 9 (depends on 8) The blower according to claim 8, wherein the at least partially electrically conductive housing is fabricated from metal, and the second portion of the ground pin is electrically connected with the ground portion of the control device and the at least partially electrically conductive housing. ### Claim 10 (depends on 9) The blower according to claim 9, wherein the control device is annular having a central axis coaxial with a central axis of the stator. ### Claim 11 (depends on 10) The blower according to claim 10, wherein the stator is concentrically located within the rotor. ### Claim 12 (depends on 11) The blower according to claim 11, wherein the blower is a radial blower. ### Claim 13 A blower comprising: a motor comprising: an at least partially electrically conductive housing; a printed circuit board assembly comprising a ground portion; a stator comprising a stator core having an insertion hole formed therein; a rotor; and a ground pin for at least achieving a ground connection of the stator core, the ground pin comprising: a first portion partially embedded in the insertion hole of the stator core in an interference fit, and a second portion comprising: a first section for electrical connection with the ground portion of the printed circuit board assembly, and a second section for electrical connection with the at least partially electrically conductive housing; wherein the ground pin is electrically connected to the stator core by being partially embedded in the stator core; and wherein the ground pin is completely contained within the at least partially electrically conductive housing. ### Claim 14 (depends on 13) The blower according to claim 13, wherein the first portion of the ground pin and/or the insertion hole is at least partially conical. ### Claim 15 (depends on 14) The blower according to claim 14, wherein the ground portion of the control device is configured as a through hole, and in an assembled state, the first section is located in the through hole so as to be electrically connected to the through hole with an interference fit. ### Claim 16 (depends on 15) The blower according to claim 15, wherein the first section is located in the through hole additionally by welding. ### Claim 17 (depends on 16) The blower according to claim 16, wherein the control device is annular having a central axis coaxial with a central axis of the stator. ### Claim 18 (depends on 17) The blower according to claim 17, wherein the stator is concentrically located within the rotor. ### Claim 19 (depends on 18) The blower according to claim 18, wherein the blower is a radial blower.