Abstract: An electro-magnetic coil assembly mounted to a clutch assembly, the electro-magnetic coil assembly including a coil mounted within an annular coil housing and a flexible armature plate. The coil assembly adapted to generate an electromagnetic field between the coil and the armature plate for attracting the armature plate to the coil assembly. The flexible armature plate includes an annular plate with an outer edge and an inner edge, the outer edge defining an outer periphery, the inner edge defining an inner periphery. Tangs spaced about the inner periphery extending radially inward from the inner edge. Inner notches spaced about the inner periphery of the annular plate and extending radially outward to a point at least halfway in the radial direction between the inner edge and the outer edge. Outer notches spaced about the outer periphery between and extending radially inward to a point at least halfway in the radial direction between the outer edge and the inner edge.

Abstract: A clutch/brake assembly is provided which includes a coil plate non-rotatably captured between the upper housing and the lower housing and having affixed thereon a ring shaped coil, a clutch rotor rotatably secured to the shaft and having a groove configured to accommodate therein the ring shaped coil, and a clutch output assembly having a clutch/brake disc and a clutch output shaft. The clutch/brake disc and the clutch output shaft are attached to one another by a plurality of springs. The clutch/brake assembly may be mounted on a deck of a lawnmower to drive a blade.

Abstract: The invention relates to a device for mounting an object to a structure in a vibration-free manner. The device has an elastic arrangement that supports the object at the structure in a stiff manner in the directions of at least two of the total of six translational and rotational degrees of freedom and in a soft manner in the directions of at least one of the total of six translational and rotational degrees of freedom. Main modes of motion of the object in the directions of the rigid support have natural frequencies that are higher than any main mode of motion of the object in any direction of the soft support at least by a factor of ten. The soft support is undamped, and a damping device is provided for any main mode of motion of the object in any direction of the soft support.

Abstract: An electromagnetic clutch includes a first rotation transmission portion, annular field core, rotation stop member, second rotation transmission portion, armature, and spring member. The annular field core is supported by the first rotation transmission portion via a first bearing. The first bearing is housed in a hollow portion of the field core and fitted on an inner circumferential surface of the field core. The rotation stop member includes a flat portion which is fixed to an end of the field core on a side opposite to the armature. The flat portion is formed integrally with a retaining piece which projects toward the hollow portion of the field core and faces the first bearing when viewed from the axial direction of the field core.

Abstract: A clutch mechanism includes a pulley, an armature, an electromagnet, a plate spring and a damper. The armature combines with the pulley in a direction of a rotation axis. The electromagnet generates attracting magnetic force, which attracts the armature in a joining direction. The plate spring generates resilient force, which urges the armature in an opposite direction from the joining direction. The damper includes an impact mitigation part mitigating an impact when the armature collides with the pulley. The pulley, the armature, the damper and the plate spring are arranged in this order in the direction of the rotation axis. The damper includes a contact portion contacting part of the armature in the direction of the rotation axis. The plate spring includes a pressing part pressing the contact portion on the armature during both the joining and unjoining of the armature and the pulley.

Abstract: In this electromagnetic clutch, a compressive force is generated in a plate spring when an armature plate is contact with a first rotor. Therefore, a force in the direction away from the first rotor acts on a first bent portion of a plate spring. However, an extension portion of a second rotor is capable of abutting to the first bent portion from the direction opposite to the first rotor. So a stress generated in the first bent portion is dispersed to the extension portion.

Abstract: When an armature plate is attracted to a rotor so that the turning force of the rotor is transmitted to the armature plate, the turning force of the armature plate is transmitted to a main shaft via a plate spring. An angle (hereinafter referred to as a slope angle) formed between the plate spring and the armature plate is set so as to be not smaller than 10° and not larger than 63°. Therefore, since the slope angle is larger than the slope angle (about 3°) of the general electromagnetic clutch, the torque increase effect increases about 5 percent as compared with the general electromagnetic clutch, and also an excessive pressing force of the plate spring does not develop.

Abstract: An electromagnetic brake for an input shaft of a vehicle transmission is disclosed. The brake includes an armature separated from an electromagnetic coil pole face by a controlled air gap. A spring release feature ensures precise armature disengagement when the brake is deactivated. A wear compensation feature maintains uniformity of the air gap.

Abstract: An electromagnetic clutch (20) capable of connecting and disconnecting a driving power source and a rotary shaft (22) includes a rotor (25) rotated by the driving power source, and an armature (40) capable of being attracted to the rotor (25) by electromagnetic force to produce a transmission force transmitted from the rotor (25) to the rotary shaft (22). The electromagnetic clutch (20) further includes leaf springs (52) urging the armature (40) in such a direction as to separate the armature from the rotor (25). The leaf springs (52) each assume an orientation such that a boost force assisting the attractive force acting upon the armature (40) is produced based on the transmission force when the armature (40) is attracted to the rotor (40).

Abstract: In an electromagnetic clutch, an electromagnetic coil is energized to couple a rotor and an armature plate to each other. Each leaf spring extends in a direction so as to intersect at an obtuse angle with the rotating direction of the armature plate, and accordingly, when the power of the driving source is transmitted to the armature plate through the rotor, a compressive force acts upon the leaf spring. The leaf spring has an inclined portion, and the armature plate is pressed against the rotor by the compressive force. Each leaf spring has a first extended portion located between the first coupling portion and inclined portion thereof and a second extended portion located between the second coupling portion and inclined portion thereof.

Abstract: An electromagnetically operable friction disk clutch having a electromagnet as well as having a rotor and an armature element to which the electromagnet can apply a magnetic field for interaction of the rotor and armature element, the armature element being arranged on a resting means which moves the armature element along a rotation axis of the rotor by magnetic force through a movement distance to a stop position on the rotor, and returns elastically without any magnetic forces to a position in which the armature element and the rotor can move, with respect to one another, without touching. According to the invention the resetting means comprise not only an elastic component but also a plastic component which at least partially compensates for the increase in the original movement distance resulting from wear by plastic deformation of the resetting means.

Abstract: The present invention relates to a disc and hub assembly for an electromagnetic clutch of a compressor. The assembly comprises: a disc (120) adapted to be attracted to or separated from a friction surface of a pulley under the action of an electromagnetic coil; a hub (110) coupled to a driving shaft of the compressor, the hub penetrating the disc (120) and having a flange (112) formed on its outer peripheral surface; a plate spring (130) which includes a plate portion (131) coupled to the top surface of the disc (120), a number of leaf spring portions (135) obliquely extending inwardly from the plate portion (131) to be coupled to the flange (112) of the hub (110) and having ends (137) which are bent toward the disc (120), and dampers (160) coupled to the ends of the leaf spring portions (135); and shock-absorbing means (140) interposed between the disc (120) and the plate portion (131) to reduce noise and impact during on/off of the clutch.

Abstract: In the disclosed electromagnetic clutch, a bent porion (15a) of a plate (15) comes into contact with an armature (6) attempting to move beyond a predetermined movable range, thereby restricting the movement of the armature (6). As a result, if an elastic member (14) is fused, a trouble is prevented which otherwise might be caused by the movement of the now-unsupported armature (6) beyond a predetermined movable range.

Abstract: A clutch pulley for selectively engaging a belt of a first device and a shaft of a second device, including a sheave member, an electromagnetic coil, a flex plate, and a ring member. The sheave member includes a sheave belt surface adapted to engage the belt and a sheave clutch surface. The electromagnetic coil is adapted to selectively create an electromagnetic flux. The flex plate includes a flex inner section concentrically coupled over the shaft, a flex outer section adapted to selectively move between two axial positions relative to the flex inner section based upon the presence of the electromagnetic flux, and a flex spoke section connecting the flex inner section and the flex outer section. The ring member is connected to the flex outer section and includes a ring clutch surface adapted to selectively engage the sheave clutch surface based upon the axial position of the flex outer section.

Abstract: A clutch pulley for selectively engaging a belt of a first device and a shaft of a second device, including a sheave member, an electromagnetic coil, a flex plate, and a ring member. The sheave member includes a sheave belt surface adapted to engage the belt and a sheave clutch surface. The electromagnetic coil is adapted to selectively create an electromagnetic flux. The flex plate includes a flex inner section concentrically coupled over the shaft, a flex outer section adapted to selectively move between two axial positions relative to the flex inner section based upon the presence of the electromagnetic flux, and a flex spoke section connecting the flex inner section and the flex outer section. The ring member is connected to the flex outer section and includes a ring clutch surface adapted to selectively engage the sheave clutch surface based upon the axial position of the flex outer section.

Abstract: In order to reduce an electromagnetic clutch in an axial size, a ring-shaped leaf spring connects an armature to a hub. The leaf spring has an outer ring portion connected to the armature, an attachment portion connected to the hub and located inner than the outer ring portion, and a connecting portion for connecting the outer ring portion and the attachment portion. A plurality of rivets of the armature are disposed at the outer ring portion. An embossed portion for generating an initial deflection on the leaf spring is disposed at an intermediate portion between the rivets in the circumferential direction of the outer ring portion.

Abstract: An improved electric clutch for driving refrigeration compressors and the like includes an annular ferromagnetic annular armature that is connected with a drive shaft via the outer peripheral portion of an annular resilient disk the inner peripheral portion of which is connected with a rotor that in turn is connected with the drive shaft. The armature is normally biased in the direction of the rotor toward an inactive de-energized position in spaced relation relative to an annular driven member that is connected with the driven shaft. A stationary electromagnetic coil is mounted on the opposite side of the driven member from the armature, so that when the coil is energized, the armature is attracted toward an active energized position in frictional engagement with the driven member, thereby to cause the driven shaft to be driven by the drive shaft.