# US 7,746,204 B2 · Field coil assembly of electromagnetic clutch > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,746,204 B2 - Document ID: US7746204B2 - Status: Granted - Kind: B2 - Application number: 12/482,260 - Filed: 2009-06-10 - Published: 2009-12-17 - Granted: 2010-06-29 - Earliest claimed: 2008-06-16 - Assignees: Halla Climate Control Corporation - Inventors: Sung-Taeg Oh; Dae-Yong Park; Sung-Won Cho - Web page: https://patentgrep.com/patent/US7746204B2 ## CPC - H01F 5/04: Arrangements of electric connections to coils, e.g. leads - F16D 27/112: with flat friction surfaces, e.g. discs - F16D 27/14: Details - H01F 7/06: Electromagnets; Actuators including electromagnets {(electric coils H01F5/00; devices for holding workpieces using electric force B23Q3/15; load-engaging elements for lifting articles electromagnetically B66C1/06; electromagnetic couplings F16D27/00; magnetic brakes F16D63/002; electromagnetically operated valves F16K11/24, F16K31/00; analysing materials by magnetic means G01N27/72, G01N27/80; electromagnets for winding mechanical clocks G04C1/02; electromagnetic relays H01H51/00; windings for salient poles of dynamo-electric machines H02K3/18; electromagnets for telegraphic communication H04L; for arc lamps H05B31/28)} - H01R 4/16: by bending - H01R 4/64: Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail - F16D 2027/001: {Means for electric connection of the coils of the electromagnetic clutches} - F16D 2027/007: {Bias of an armature of an electromagnetic clutch by flexing of substantially flat springs, e.g. leaf springs} - H01F 2007/062: {Details of terminals or connectors for electromagnets} - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES - F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES - H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS ## Abstract The present invention relates to a field coil assembly of an electromagnetic clutch for a compressor. A field coil assembly according to the present invention includes a field coil member 20 having a coil wire 22 extending outward; a power connecting member 30 having a sleeve 35 with a terminal 40 protruding out, the terminal electrically connecting the coil wire 22 to an external power source; a flange 28 coupled to one side of the field coil member 20 with the coil wire 22 drawn therefrom, the flange 28 having a catching portion 29 coupled with the sleeve 35, the flange 28 having electric conductivity; and a ground terminal 50 provided in the sleeve 35 and electrically connected to the terminal 40, the ground terminal 50 having at least a portion contacted with the catching portion 29. ## Claims ### Claim 1 A field coil assembly of an electromagnetic clutch, comprising: a field coil member having a coil wire extending outward; a power connecting member having a sleeve with a terminal protruding out, the terminal electrically connecting the coil wire to an external power source; a flange coupled to one side of the field coil member with the coil wire drawn therefrom, the flange having a catching portion coupled with the sleeve, the flange having electric conductivity; and a ground terminal provided in the sleeve and electrically connected to the terminal, the ground terminal having at least a portion contacted with the catching portion. ### Claim 2 (depends on 1) The field coil assembly as claimed in claim 1, wherein the portion of the terminal that protrudes out of the sleeve, includes: a support being in contact with a drawn-out side of the coil wire; and a bent portion bent at a position adjacent to the support to have height different from the support, the bent portion being spaced from the drawn-out side of the coil wire, wherein a portion of the coil wire that draws from the field coil member is inserted between the support and the bent portion and electrically connected to the terminal. ### Claim 3 (depends on 1) The field coil assembly as claimed in claim 1, wherein a horizontal slot is formed at a gap between the support and the bent, and the bent portion is bent in a state where the portion of the coil wire that draws from the field coil member is inserted into the horizontal slot, thereby electrically connecting the coil wire to the terminal. ### Claim 4 (depends on 1) The field coil assembly as claimed in claim 1, wherein the sleeve has a hook that is caught to or released from the catching portion, and the ground terminal is at least partially exposed out of the hook. ### Claim 5 (depends on 1) The field coil assembly as claimed in claim 1, wherein the terminal and the ground terminal are integrally formed.