Electromagnetic clutch

Claim 2

For use with an air-conditioning compressor including a casing having a fixed tubular extension extending from an end surface thereof and a drive shaft extending centrally through said tubular extension with a drive hub secured to said drive shaft; an electromagnetic clutch comprising a drivecomponents subassembly, said drive-components subassembly including detachably interconnected rotor and pulley assemblies, said rotor assembly forming an end wall and an annular inner wall and said pulley assembly forming another end wall and an annular outer wall of a drive-components housing, a coil assembly including a coil housing and a coil mounted within said coil housing, said coil assembly being mounted within said drive-components housing and retained axially and radially by said respective walls of said interconnected rotor and pulley assemblies, a bearing secured axially against an inner peripheral surface of said annular inner wall of said rotor assembly for rotatably mounting said drivecomponents subassembly on said tubular extension, and an extended portion of said coil housing extending beyond said another end wall for abutting against said compressor end surface and an end face of said bearing, thereby locating both said coil assembly axially with respect to said drive-components housing and said drive-components subassembly axially with respect to said compressor casing; fastener means adjacent the other end face of said bearing for retaining said drive-components subassembly axially in place on said tubular extension; and an armature plate and drive plate subassembly mounted on said drive hub such that the armature plate thereof is positioned radially adjacent said end wall of said rotor assembly for being drivingly connected to said end wall of said rotor assembly upon energization of said coil.

Claim 3

For use with an air-conditioning compressor including a casing having a fixed tubular extension extending from an end wall thereof and a drive shaft extending centrally through said tubular extension with a drive hub secured to said drive shaft; an electromagnetic clutch comprising a drive-components subassembly, said drive-components subassembly including a detachably interconnected rotor mechanism and pulley assembly, said rotor mechanism including a radially extending pole member; a coil assembly including a coil housing and a coil mounted within said coil housing, said coil housing having an open end adjacent said pole member, said coil assembly being retained axially and radially by said interconnected rotor mechanism and pulley assembly, a bearing secured axially against an inner peripheral surface of said rotor mechanism for rotatably mounting said drive-components subassembly on said tubular extension, and an extended portion of said coil housing for abutting against said compressor end wall and an end face of said bearing; fastener means adjacent the other end face of said bearing for retaining said drive-components subassembly axially in place on said tubular extension; and an armature plate and drive plate subassembly mounted on said drive hub such that the armature plate thereof is positioned radially adjacent said pole member for being drivingly connected to said pole member upon energization of said coil.

Claim 4

For use with an air-conditioning compressor including a casing having a fixed tubular extension extending from an end wall thereof and a drive shaft extending centrally through said tubular extension with a drive hub secured to said drive shaft; an electromagnetic clutch comprising a drive-components subassembly, said drive-components subassembly including a detachably interconnected rotor mechanism and pulley assembly, said rotor mechanism including a radially extending pole member; a coil assembly including a coil housing and a coil mounted within said coil housing, said coil housing having an open end adjacent said pole member, said coil assembly being retained axially and radially by said interconnected rotor mechanism and pulley assembly, a bearing secured axially against an inner peripheral surface of said rotor mechanism for rotatably mounting said drive-components subassembly on said tubular extension, and an extended portion of said coil housing for abutting against said compressor end wall and an end face of said bearing; fastener means adjacent the other end face of said bearing for retaining said drive-components subassembly axially in place on said tubular extension; and an armature plate and drive plate subassembly mounted on said drive hub such that the armature plate thereof is positioned radially adjacent said pole member for being drivingly connected to said pole member upon energization of said coil.

Claim 5

For use with an air-conditioning compressor including a casing having a fixed tubular extension extending from an end wall thereof and a drive shaft extending centrally through said tubular extension with a drive hub secured to said drive shaft; an electromagnetic clutch comprising a drive-components subassembly rotatably mounted on said tubular extension, said drive-components subassembly including a sleeve member, a radially extending rotor secured to one end of said sleeve member, a bearing mounted within the other end of said sleeve member and around said tubular extension, a coil housing, a coil mounted within said coil housing, said coil housing having an open end adjacent said rotor and a substantially toroidal-shaped end portion opposite said open end, a radially inner face of said toroidal-shaped end portion abutting against an end face of said bearing, an axially extending flange formed on the outer edge of said radially extending rotor surrounding the open end portion of said coil housing, a cylindrical rim member detachably secured at one end thereof to said flange, and a pulley groove formed on the other end of said cylindrical rim member and extending radially inward of said cylindrical rim member intermediate said coil housing and said compressor end wall and serving to retain said coil housing in said drive-components subassembly; fastener means adjacent the other end face of said bearing for retaining said drive-components subassembly axially in place on said tubular extension with said toroidal-shaped end portion abutting against said compressor end wall; and an armature plate and drive plate subassembly mounted on said drive hub such that the armature plate thereof is positioned radially adjacent said rotor for being drivingly connected to said rotor upon energization of said coil.

Claim 6

For use with an air-conditioning compressor including a casing having a fixed tubular extension extending from an end wall thereof and a drive shaft extending centrally through said tubular extension with a drive hub secured to said drive shaft; an electromagnetic clutch comprising a drive-components subassembly rotatably mounted on said tubular extension, said drive-components subassembly including a sleeve member, a radially extending rotor secured to one end of said sleeve member, a bearing mounted within the other end of said sleeve member and around said tubular extension, a coil housing, a coil mounted within said coil housing, said coil housing having an open end adjacent said rotor and a substantially toroidal-shaped end portion opposite said open end, a radially inner face of said toroidal-shaped end portion abutting against an end face of said bearing, an axially extending flange formed on the outer edge of said radially extending rotor surrounding the open end portion of said coil housing, a cylindrical rim member detachably secured at one end thereof to said flange, and a pulley groove formed on the other end of said cylindrical rim member and extending radially inward of said cylindrical rim member intermediate said coil housing and said compressor end wall and serving to retain said coil housing in said drive-components subassembly; fastener means adjacent the other end face of said bearing for retaining said drive-components subassembly axially in place on said tubular extension with said toroidal-shaped end portion abutting against said compressor end wall; and an armature plate and drive plate subassembly mounted on said drive hub such that the armature plate thereof is positioned radially adjacent said rotor for being drivingly connected to said rotor upon energization of said coil.

Claim 7

For use with an air-conditioning compressor including a casing having a fixed tubular extension extending from an end wall thereof and a drive shaft extending centrally through said tubular extension with a drive hub secured to said drive shaft; an electromagnetic clutch comprising a drive-components subassembly rotatably mounted on said tubular extension, said drive components subassembly including a sleeve member having a counterbore formed in one end thereof, a radially extending rotor secured to the end of said sleeve member opposite said counterbore, a bearing secured in said counterbore and around said tubular extension, a coil housing, a coil mounted within said coil housing, said coil housing having an open end adjacent said radially extending rotor and an inwardly extending stepped wall on the end thereof opposite said open end, a flanged abutment formed on the radially inner portion of said stepped wall and abutting against an end face of said bearing, an axially extending flange formed on the outer edge of said radially extending rotor surrounding the open end portion of said coil housing, a cylindrical outer wall member detachably secured at one end thereof to said flange, and a pulley groove formed on the other end of said cylindrical outer wall member and extending radially inward of said cylindrical outer wall member intermediate said coil housing and said compressor end wall and serving to retain said coil housing in said drive-components subassembly; fastener means adjacent the other end face of said bearing for retaining said drive-components subassembly axially in place on said tubular extension with a portion of said stepped wall abutting against said compressor end wall; and an armature plate and drive plate subassembly mounted on said drive hub such that the armature plate thereof is positioned radially adjacent said rotor for being drivingly connected to said rotor upon energization of said coil.

Claim 8

For use with an air-conditioning compressor including a casing having a fixed tubular extension extending from an end wall thereof and a drive shaft extending centrally through said tubular extension with a drive hub secured to said drive shaft; an electromagnetic clutch comprising a drive-components subassembly rotatably mounted on said tubular extension, said drive components subassembly including a sleeve member having a counterbore formed in one end thereof, a radially extending rotor secured to the end of said sleeve member opposite said counterbore, a bearing secured in said counterbore and around said tubular extension, a coil housing, a coil mounted within said coil housing, said coil housing having an open end adjacent said radially extending rotor and an inwardly extending stepped wall on the end thereof opposite said open end, a flanged abutment formed on the radially inner portion of said stepped wall and abutting against an end face of said bearing, an axially extending flange formed on the outer edge of said radially extending rotor surrounding the open end portion of said coil housing, a cylindrical outer wall member detachably secured at one end thereof to said flange, and a pulley groove formed on the other end of said cylindrical outer wall member and extending radially inward of said cylindrical outer wall member intermediate said coil housing and said compressor end wall and serving to retain said coil housing in said drive-components subassembly; fastener means adjacent the other end face of said bearing for retaining said drive-components subassembly axially in place on said tubular extension with a portion of said stepped wall abutting against said compressor end wall; and an armature plate and drive plate subassembly mounted on said drive hub such that the armature plate thereof is positioned radially adjacent said rotor for being drivingly connected to said rotor upon energization of said coil.

Claim 9

For use with an air-conditioning compressor including a casing having a fixed tubular extension extending from an end wall thereof and a drive shaft extending centrally through said tubular extension with a drive hub secured to said drive shaft; an electromagnetic clutch comprising a drivecomponents subassembly rotatably mounted on said tubular extension, said drive-components subassembly including a sleeve member having a counterbore formed in one end thereof, a radially extending rotor secured to the end of said sleeve member opposite said counterbore, a bearing secured in said counterbore and around said tubular extension, a coil housing, a coil mounted within said coil housing, said coil housing having an open end adjacent said radially extending rotor and an inwardly extending stepped wall on the end thereof opposite said open end, a flanged abutment formed on the radially inner portion of said stepped wall and abutting against an end face of said bearing, an axially extending flange formed on the outer edge of said radially extending rotor surrounding the open end portion of said coil housing, a first cylindrical outer wall member detachably secured at one end thereof to said flange, and a pulley groove formed on the other end of said first cylindrical outer wall member and extending radially inward of said first cylindrical outer wall member intermediate said coil housing and said compressor end wall and serving to retain said coil housing in said drive-components subassembly; fastener means adjacent the other end face of said bearing for retaining said drive-components subassembly axially in place on said tubular extension with a portion of said stepped wall abutting against said compressor end wall; an armature plate and drive plate subassembly mounted on said drive hub such that the armature plate thereof is positioned radially adjacent said rotor for being drivingly connected to said rotor upon energization of said coil; and a damper mechanism operatively connected to said drive-components subassembly, said damper mechanism including a second cylindrical outer wall member detachably secured at one end thereof to said one end of said first cylindrical outer wall member and extending beyond said armature plate and drive plate subassembly, a cylindrical inner wall member concentric with said second cylindrical outer wall member, a radial end wall interconnecting respective ends of said second cylindrical outer wall and said cylindrical inner wall members, a rubber ring secured at the inner peripheral surface of said cylindrical inner wall member, and a metal ring member secured at the inner peripheral surface thereof to the outer peripheral surface of said rubber ring.

Claim 10

For use with an air-conditioning compressor including a casing having a fixed tubular extension extending from an end wall thereof and a drive shaft extending centrally through said tubular extension with a drive hub secured to said drive shaft; an electromagnetic clutch comprising a drivecomponents subassembly rotatably mounted on said tubular extension, said drive-components subassembly including a sleeve member having a counterbore formed in one end thereof, a radially extending rotor secured to the end of said sleeve member opposite said counterbore, a bearing secured in said counterbore and around said tubular extension, a coil housing, a coil mounted within said coil housing, said coil housing having an open end adjacent said radially extending rotor and an inwardly extending stepped wall on the end thereof opposite said open end, a flanged abutment formed on the radially inner portion of said stepped wall and abutting against an end face of said bearing, an axially extending flange formed on the outer edge of said radially extending rotor surrounding the open end portion of said coil housing, a first cylindrical outer wall member detachably secured at one end thereof to said flange, and a pulley groove formed on the other end of said first cylindrical outer wall member and extending radially inward of said first cylindrical outer wall member intermediate said coil housing and said compressor end wall and serving to retain said coil housing in said drive-components subassembly; fastener means adjacent the other end face of said bearing for retaining said drive-components subassembly axially in place on said tubular extension with a portion of said stepped wall abutting against said compressor end wall; an armature plate and drive plate subassembly mounted on said drive hub such that the armature plate thereof is positioned radially adjacent said rotor for being drivingly connected to said rotor upon energization of said coil; and a damper mechanism operatively connected to said drive-components subassembly, said damper mechanism including a second cylindrical outer wall member detachably secured at one end thereof to said one end of said first cylindrical outer wall member and extending beyond said armature plate and drive plate subassembly, a cylindrical inner wall member concentric with said second cylindrical outer wall member, a radial end wall interconnecting respective ends of said second cylindrical outer wall and said cylindrical inner wall members, a rubber ring secured at the inner peripheral surface of said cylindrical inner wall member, and a metal ring member secured at the inner peripheral surface thereof to the outer peripheral surface of said rubber ring.

Claim 11

For use with an air-conditioning compressor including a casing having a fixed tubular extension extending from an end wall thereof and a drive shaft extending centrally through said tubular extension with a drive hub secured to said drive shaft; an electromagnetic clutch comprising a drive-components subassembly rotatably mounted on said tubular extension, said drive-components subassembly including a sleeve member having a counterbore formed in one end thereof, a radially extending rotor secured to the end of said sleeve member opposite said counterbore, a bearing mounted in said counterbore and around said tubular extension, means formed on said sleeve member for retaining said bearing in said counterbore, a coil housing, a coil mounted within said coil housing, said coil housing having an open end adjacent said radially extending rotor and an inwardly extending stepped wall on the end thereof opposite said open end, a flanged abutment formed on the radially inner portion of said stepped wall and abutting against an end face of said bearing, an axially extending flange formed on the outer edge of said radially extending rotor surrounding the open end portion of said coil housing, a cylindrical rim member detachably secured at one end thereof to saif flange, and a pulley groove formed on the other end of said cylindrical rim member and extending radially inward of said cylindrical rim member intermediate said coil housing and said compressor end wall and serving to retain said coil housing in said drive-components subassembly; an annular groove formed in said fixed tubular extension adjacent the end thereof, and a snap-ring mounted in said annular groove adjacent the other end face of said bearing for retaining said drive-components subassembly axially in place on said tubular extension with an end surface of said stepped wall abutting against said compressor end wall; and an armature plate and drive plate subassembly including a drive plate secured to said drive hub, radially extending armature plate positioned adjacent said rotor a predetermined variable air space width apart therefrom when said coil is in its deenergized condition, and a plurality of leaf springs, each connected at one end thereof to said drive plate and at the other end thereof to said armature plate.

Claim 12

For use with an air-conditioning compressor including a casing having a fixed tubular extension extending from an end wall thereof and a drive shaft extending centrally through said tubular extension with a drive hub secured to said drive shaft; an electromagnetic clutch comprising a drive-components subassembly rotatably mounted on said tubular extension, said drive-components subassembly including a sleeve member having a counterbore formed in one end thereof, a radially extending rotor secured to the end of said sleeve member opposite said counterbore, a bearing mounted in said counterbore and around said tubular extension, means formed on said sleeve member for retaining said bearing in said counterbore, a coil housing, a coil mounted within said coil housing, said coil housing having an open end adjacent said radially extending rotor and an inwardly extending stepped wall on the end thereof opposite said open end, a flanged abutment formed on the radially inner portion of said stepped wall and abutting against an end face of said bearing, an axially extending flange formed on the outer edge of said radially extending rotor surrounding the open end portion of said coil housing, a cylindrical rim member detachably secured at one end thereof to saif flange, and a pulley groove formed on the other end of said cylindrical rim member and extending radially inward of said cylindrical rim member intermediate said coil housing and said compressor end wall and serving to retain said coil housing in said drive-components subassembly; an annular groove formed in said fixed tubular extension adjacent the end thereof, and a snap-ring mounted in said annular groove adjacent the other end face of said bearing for retaining said drive-components subassembly axially in place on said tubular extension with an end surface of said stepped wall abutting against said compressor end wall; and an armature plate and drive plate subassembly including a drive plate secured to said drive hub, radially extending armature plate positioned adjacent said rotor a predetermined variable air space width apart therefrom when said coil is in its deenergized condition, and a plurality of leaf springs, each connected at one end thereof to said drive plate and at the other end thereof to said armature plate.

Claim 13

For use with an air-conditioning compressor including a casing having a fixed tubular extension extending from an end wall thereof and a drive shaft extending centrally through said tubular extension with a drive hub secured to said drive shaft; an electromagnetic clutch comprising a drive-components subassembly rotatably mounted on said tubular extension, said drive-components subassembly including a sleeve member, a radially extending rotor secured to one end of said sleeve member, a shoulder formed on the inner periphery of said sleeve member a predetermined distance from the other end thereof, a bearing inserted in said other end of said sleeve member for mounting around said extension, a staked portion formed on said other end of said sleeve member for retaining said bearing in place in said sleeve member abutted against said shoulder, a coil housing, a coil mounted within said coil housing, said coil housing having an open end adjacent said radially extending rotor and an inwardly extending stepped wall on the end thereof opposite said open end, a flanged abutment formed on the radially inner portion of said stepped wall and abutting against an end face of said bearing, an axially extending flange formed on the outer edge of said radially extending rotor surrounding the open end portion of said coil housing, a cylindrical rim member detachably secured at one end thereof to said flange, and a pulley groove formed on the other end of said cylindrical rim member and extending radially inward of said cylindrical rim member intermediate said coil housing and said compressor end wall and serving to retain said coil housing in said drive-components subassembly; an annular groove formed in said fixed tubular extension adjacent the end thereof, and a snap-ring mounted in said annular groove adjacent the other end face of said bearing for retaining said drive-components subassembly axially in place on said tubular extension with an end surface of said stepped wall abutting against said compressor end wall; and an armature plate and drive plate subassembly including a drive plate secured to said drive hub, a radially extending armature plate positioned adjacent said rotor a predetermined variably air space width apart therefrom when said coil is in its deenergized condition, and a plurality of leaf springs, each connected at one end thereof to said drive plate and at the other end thereof to said armature plate.

Claim 14

For use with an air-conditioning compressor including a casing having a fixed tubular extension extending from an end wall thereof and a drive shaft extending centrally through said tubular extension with a drive hub secured to said drive shaft; an electromagnetic clutch comprising a drive-components subassembly rotatably mounted on said tubular extension, said drive-components subassembly including a sleeve member, a radially extending rotor secured to one end of said sleeve member, a shoulder formed on the inner periphery of said sleeve member a predetermined distance from the other end thereof, a bearing inserted in said other end of said sleeve member for mounting around said extension, a staked portion formed on said other end of said sleeve member for retaining said bearing in place in said sleeve member abutted against said shoulder, a coil housing, a coil mounted within said coil housing, said coil housing having an open end adjacent said radially extending rotor and an inwardly extending stepped wall on the end thereof opposite said open end, a flanged abutment formed on the radially inner portion of said stepped wall and abutting against an end face of said bearing, an axially extending flange formed on the outer edge of said radially extending rotor surrounding the open end portion of said coil housing, a cylindrical rim member detachably secured at one end thereof to said flange, and a pulley groove formed on the other end of said cylindrical rim member and extending radially inward of said cylindrical rim member intermediate said coil housing and said compressor end wall and serving to retain said coil housing in said drive-components subassembly; an annular groove formed in said fixed tubular extension adjacent the end thereof, and a snap-ring mounted in said annular groove adjacent the other end face of said bearing for retaining said drive-components subassembly axially in place on said tubular extension with an end surface of said stepped wall abutting against said compressor end wall; and an armature plate and drive plate subassembly including a drive plate secured to said drive hub, a radially extending armature plate positioned adjacent said rotor a predetermined variably air space width apart therefrom when said coil is in its deenergized condition, and a plurality of leaf springs, each connected at one end thereof to said drive plate and at the other end thereof to said armature plate.