| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 121 | Bolt on electromagnetic fan clutch | US242287 | 1988-09-06 | US4896757A | 1990-01-30 | Kenneth F. Seager, Sr. |
| An electromagnetic fan clutch having a radial flange adapted to be mounted to the fan drive hub of an internal combustion engine and an axial shaft connected to the radial flange. A fan hub, adapted to have a fan mounted thereto, is rotatably connected to the drive shaft adjacent to the radial flange. The radial flange has an axial hub spacing the fan hub from the flange portion of the radial flange a distance sufficient for the insertion of mounting bolts. An annular armature is connected to the fan hub by a plurality of leaf springs axially biasing the armature away from a stator. The stator is fixedly attached to the axial shaft and rotates therewith. A solenoid coil enclosed in a coil housing is disposed adjacent the stator. The coil housing is rotatably connected to the axial shaft and is held stationary by an anchor strap connected between the coil housing and a convenient stationary member in the engine compartment. | ||||||
| 122 | Electromagnetic clutch | US67879 | 1987-06-30 | US4860867A | 1989-08-29 | Kazuo Nishimura |
| An electromagnetic clutch for an automotive air conditioning system is disclosed which includes a rotor, an electromagnetic coil, and an armature plate. A boss is secured to a drive shaft and has a wave-shaped flange which is formed on the outer surface of the boss. A front plate is disposed forwardly of the wave-shaped flange of the boss through a ring-shaped washer of elastic material. A rear plate is disposed rearwardly of the wave-shaped flange of the boss through another ring-shaped washer of elastic material. The armature plate is connected to the boss, which connects the front plate and rear plate through the washers made of elastic material, respectively, through a plurality of leaf springs. When the above electromagnetic clutch is supplied with electric current, the rotational force in the direction opposite to the rotational force of the front plate and rear plate is added to the boss. However, since the front plate and rear plate are rotatably fixed to the boss through the ring-shaped washers made of elastic material, the drive shaft is prevented from receiving torsional resonance by the compression and deformation of the ring-shaped washers. | ||||||
| 123 | Clutch apparatus for rapid power source conversion | US230594 | 1988-08-10 | US4840543A | 1989-06-20 | John D. Geberth, Jr. |
| There is provided a mechanism or system for use with a motor driven mechanism, such as a pump for pressurizing paint for spray painting purposes, which permits conversion of the power source therefor between an electric motor and an internal combustion engine, each of which being capable of directly driving the motor driven mechanism. The mechanism or system includes a commonly shared clutch mechanism which is controlled such that the clutch is engaged and the pump operated until the operating level is reached at which time the clutch is disengaged so that the electric motor or internal combustion engine is under no load. The clutch mechanism utilizes a magnetic clutch and the clutch driven plate is non-rotatably connected to the pump input shaft while the clutch drive plate in non-rotatably connected to the motor or engine output shaft. The clutch drive plate is splined or keyed onto the engine or motor output shaft and is interchangeable between the output shafts of the electric motor and internal combustion engine. The electromagnetic coil, when energized, magnetically draws the clutch drive plate towards the clutch driven plate and causes the two plates to engage with one another. | ||||||
| 124 | Clutch mechanisms with improved electromagnetic means, spring supports and assembly versatility | US847079 | 1986-04-01 | US4704554A | 1987-11-03 | Kozo Nishimura |
| An electromagnetically controlled spring clutch mechanism comprising an input rotating element, a rotor, an armature, a biasing spring for biasing the armature in a direction away from the rotor, an electromagnetic driver for magnetically attracting the armature to the rotor against the biasing action of the biasing spring, and a coil spring. The clutch mechanism transmits the driving force of the input rotating element by the contraction of the coil spring. According to a first aspect, the biasing spring is fixed to a supporting member by a plate-like spring fixing member to form a unit assembly. According to a second aspect, the clutch mechanism can be used in any one of two arrangements by changing the assembling sequence of various constituent elements. According to a third aspect, projections which contact or approach the rotor beyond the armature are provided in the supporting member, to which one end of the coil spring is connected. According to a fourth aspect, an improvement is made on the electromagnetic drive, which can be applied not only to the electromagnetically controlled spring clutch mechanism, but also to other types of electromagnetic clutch mechanisms. | ||||||
| 125 | Control circuits for electromagnetic coupling apparatus | US709159 | 1985-03-07 | US4649458A | 1987-03-10 | Shigeharu Arai; Minoru Otsuka |
| The control circuit for use with an electromagnetic coupling apparatus comprises a timer started when a power source switch is closed, an oscillator started by the switch and stopped by the timer, and a drive circuit which intermittently passes current through an exciting coil of the electromagnetic coupling apparatus in accordance with the oscillation output of the oscillator and continuously passes current through the exciting coil when the oscillation output is stopped. | ||||||
| 126 | Electromagnetic coupling device | US716059 | 1985-03-26 | US4635774A | 1987-01-13 | Yuzo Sekiguchi; Enjiro Maejima |
| An electromagnetic coupling device is configured so that divided armatures disposed opposite to an electromagnetic flux producing member are magnetically attracted in a stepwise manner. When applied to an electromagnetic clutch, the coupling device comprises an output pulley serving as the magnetic flux producing member provided with a yoke in which an excitation coil is incorporated, an input pulley disposed coaxially with the output pulley and adapted to be coupled therewith when the excitation coil is energized, and a plurality of annular armatures adapted to be fastened to the input pulley and having diameters different from each other. The coupling device further comprises armature supporting leaf springs provided on an axial end of the input pulley and elastically supporting the armatures in such a manner that they are disposed concentrically with the input pulley and are spaced in an axial direction with respect to the output pulley through magnetic gaps, and detour magnetic flux adjusting portions formed on an axial end of the output pulley. The dimensions of the adjusting portions and the lengths of the magnetic gaps vary in a stepwise manner with respect to the armatures, respectively, thus providing an excellent progressive coupling between the magnetic flux producing member and the armatures. | ||||||
| 127 | Electromagnetic clutch | US521555 | 1983-08-09 | US4574930A | 1986-03-11 | Takatoshi Koitabashi |
| An electromagnetic clutch is disclosed which includes a pulley and an electromagnetic coil. A hub is secured to a drive shaft and has a radially extending flange portion which faces the pulley at a predetermined axial gap. An armature plate is disposed in the axial gap between the pulley and the radially extending flange portion of hub. The armature plate is elastically connected to the flange portion of the hub by a plurality of U-shaped spring members. Each spring member is provided with a pair of fittings and a pair of spaced, opposing axial flanges extending from the end portion of the fittings. An elastic member is located in the gap between the axial flanges. The impact force on the drive shaft when the electromagnetic clutch is first actuated is reduced by the compressive deformation of the elastic members. The impact sound is also reduced by the twist deformation of the elastic members. | ||||||
| 128 | Electromagnetic clutch | US284384 | 1981-07-17 | US4428470A | 1984-01-31 | George T. Bennett; J. D. Livesay |
| An electromagnetic clutch having a bearing supported pulley provided with a compact rotor, coil and coil housing arrangement having precisely controlled and maximized air gap areas with the compactness characterized by allowing the inner diameter of the pulley to approach the outer diameter of the coil and the precise controlling and maximizing of the air gap areas characterized by the formation of a close tolerance radial air gap at substantially the outer diameter of the bearing. | ||||||
| 129 | Self-adjusting clutch or brake | US3624767D | 1970-08-05 | US3624767A | 1971-11-30 | KROEGER EDWARD R |
| The armature ring of a magnetic friction brake or clutch is supported on a rotary hub through the medium of a plurality of angularly spaced leaf springs extending along secants of the armature, riveted at opposite ends to the armature and hub, and stressed to bias the armature axially away from its coating magnet face. Pins rigid with the armature project loosely into holes in the hub and carry split resilient rings which constitute frictionally held stops movable between axially spaced abutments on the hub, one abutment acting when the brake is energized to shift the ring along the pin a distance corresponding to the wearing off of the armature face in previous brake applications. The other abutment coacts with the stop ring to determine the extent of separation of the armature from its magnet when the latter is deactivated and thus determine the width of the idle air gap between the rings.
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| 130 | Resilient lining for magnetic clutch | US3565223D | 1969-06-09 | US3565223A | 1971-02-23 | PIERCE WILLIAM C |
| A magnetic clutch including a driven rotor having a drive pulley therearound and an armature assembly including a spring-mounted armature disc positioned to frictionally engage a face of the rotor. The primary feature of the invention is a resilient lining in and slightly projecting from the face of the armature disc and located around the pole faces. In operation the rotor face and the armature face are in metal-to-metal contact but the resilient lining prevents or reduces noise on impact. In a preferred form of the invention the armature assembly includes a circular resilient cushion on which a spring supporting plate and the armature disc are mounted.
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| 131 | Electromagnetic drive | US3494453D | 1967-11-06 | US3494453A | 1970-02-10 | SEPKO JOSEPH M |
| 132 | Noise-controlling armature for brakes, clutches and the like | US48185865 | 1965-08-23 | US3368657A | 1968-02-13 | WRENSCH BERNARD E; FITZGERALD LLOYD A |
| 133 | Electromagnetic clutch having a shock absorbing elastomeric ring | US11126561 | 1961-05-19 | US3205989A | 1965-09-14 | MANTEY RAYMOND N |
| 134 | Electromagnetic clutch | US7633360 | 1960-12-16 | US3082933A | 1963-03-26 | BERNARD JAMES A |
| 135 | Electromagnetic drive | US78177758 | 1958-12-19 | US3055475A | 1962-09-25 | PITTS JR WADE H |
| 136 | Magnetic clutch | US76546258 | 1958-10-06 | US2986251A | 1961-05-30 | PITTS JR WADE H |
| 137 | Magnetic clutches | US55704256 | 1956-01-03 | US2965203A | 1960-12-20 | WHITE JR EUGENE F |
| 138 | Electromagnetic clutch or brake | US62306256 | 1956-11-19 | US2914156A | 1959-11-24 | ROBERT HARTING GLEN |
| 139 | Electromagnetic clutch | US68060133 | 1933-07-15 | US2039714A | 1936-05-05 | FULLER ALBERT B |
| 140 | ELECTROMAGNETIC CLUTCH | EP16187456.5 | 2016-09-06 | EP3141772B1 | 2018-05-02 | Fujisawa, Yoshinori |
| An electromagnetic clutch includes an armature to be attracted to a rotor, an armature hub formed on one end portion of a rotating shaft, and a leaf spring which connects the armature to the armature hub and biases the armature away from the rotor. The leaf spring includes a base fixed to the armature hub, a stopper connected to the base, and a connecting piece surrounding the stopper by projecting outside from the base, and fixed to the armature. A through hole into which a rivet for fixing the base to the armature hub is inserted is formed in the base. A low-strength portion having strength lower than that in the periphery of the through hole is formed in a boundary portion between the base and a connecting portion. | ||||||
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