A clutch-brake device having an actuating disc, a braking disc, a shaft sleeve, a friction disc, a main coupling body, an intermediate disc, and a cutting tool seat. The coupling and dis-coupling between the main coupling body and a flange of the shaft sleeve is achieved by a cooperative motion between the intermediate disc and the adjacent main coupling body and the cutting tool seat. The clutch-brake device can be used for coupling of the engine and cutting blades of a lawn mower or other applications, and is reliable, of high load capability, stable and durable.

A clutch for selectively coupling first and second rotational members includes a hub rotatable about an axis and connectable to the first rotational member, and a carrier rotatable about the axis and connectable to the second rotational member. One of the hub and the carrier defines an annular groove and the other of the hub and the carrier defines a ramped surface. A wedge plate of the clutch has a first edge disposed on the ramped surface, a second edge disposed in the annular groove, and a face extending between the edges and defining an annular shoulder. An annular resilient member is seated against the shoulder.

A load connecting mechanism includes a mounting portion, a contact portion, and a force-exerting portion. The mounting portion is configured to mount the load connecting mechanism to a power source and a load, respectively. The contact portion is disposed on the mounting portion and includes two slidably coupled contact faces. The force-exerting portion is configured to provide a force to the contact faces in an axial direction of the power source to make the contact faces closely slidably couple to each other. Through the slidable coupling relationship between the contact faces, power of the power source is progressively transmitted to the load and finally drives the load to rotate in synchronization with the power source. The present invention further provides a motor driving assembly and a fan. The mechanism can satisfy the needs of bidirectional rotation of a load such as a fan and of large startup torque.

A load connecting mechanism includes a mounting portion, a contact portion, and a force-exerting portion. The mounting portion is configured to mount the load connecting mechanism to a power source and a load, respectively. The contact portion is disposed on the mounting portion and includes two slidably coupled contact faces. The force-exerting portion is configured to provide a force to the contact faces in an axial direction of the power source to make the contact faces closely slidably couple to each other. Through the slidable coupling relationship between the contact faces, power of the power source is progressively transmitted to the load and finally drives the load to rotate in synchronization with the power source. The present invention further provides a motor driving assembly and a fan. The mechanism can satisfy the needs of bidirectional rotation of a load such as a fan and of large startup torque.

A clutch includes a pair of concentric races rotatable about an axis and a disk radially disposed between the races. The disk has edges each engageable with one of the races and has opposing first and second opposing faces extending between the edges. An annular resilient member has a first segment adjacent to the first face and a second segment adjacent to the second face.

A wedge clutch imparts a wedging effect to selectively transfer power through powertrain components. The wedge clutch includes a plurality of wedge segments arranged annularly about an axis and configured to collectively constrict and expand with respect to the axis to correspondingly lock and unlock the clutch. Each wedge segment includes an aperture. A cage assembly is configured to control relative movement of the plurality of wedge segments with respect to each other. The cage assembly including a plurality of pins, each extending through one of the apertures to control the relative movement of the wedge segments.

A wedge clutch imparts a wedging effect to selectively transfer power through powertrain components. The wedge clutch includes a plurality of wedge segments arranged annularly about an axis and configured to collectively constrict and expand with respect to the axis to correspondingly lock and unlock the clutch. Each wedge segment includes an aperture. A cage assembly is configured to control relative movement of the plurality of wedge segments with respect to each other. The cage assembly including a plurality of pins, each extending through one of the apertures to control the relative movement of the wedge segments.

In some examples, a cone clutch assembly includes an inner cone member rotationally coupled to a first shaft, the inner cone member defining a first friction surface, and an outer cone member rotationally coupled to a second shaft, the outer cone member defining a second friction surface opposing the first friction surface. The inner cone member and outer cone member are configured to be selectively engage and disengaged from each other. When the inner cone member is engaged with the outer cone member, the first friction surface of the inner cone member frictionally engages the second friction surface of the outer cone member such that rotational motion is transferred between the inner cone member and the outer cone member. The inner surface of the inner cone member opposing the first friction surface includes at least one groove configured to receive a cooling fluid during operation of the cone clutch assembly.

In some examples, a cone clutch assembly includes an inner cone member rotationally coupled to a first shaft, the inner cone member defining a first friction surface, and an outer cone member rotationally coupled to a second shaft, the outer cone member defining a second friction surface opposing the first friction surface. The inner cone member and outer cone member are configured to be selectively engage and disengaged from each other. When the inner cone member is engaged with the outer cone member, the first friction surface of the inner cone member frictionally engages the second friction surface of the outer cone member such that rotational motion is transferred between the inner cone member and the outer cone member. The inner surface of the inner cone member opposing the first friction surface includes at least one groove configured to receive a cooling fluid during operation of the cone clutch assembly.

In one example, a cone clutch assembly including an inner cone member rotationally coupled to a first shaft, the inner cone member defining a first friction surface; an outer cone member rotationally coupled to a second shaft, the outer cone member defining a second friction surface opposing the first friction surface; and an independent friction member positioned between the inner and the outer cone member. The inner cone member and outer cone member are configured to be selectively engaged and disengaged from each other. When the inner cone member is engaged with the outer cone member, the first friction surface of the inner cone member frictionally engages one surface of the friction member, and the second friction surface of the outer cone member engages another surface of the friction member such that rotational motion is transferred between the inner and outer cone member via the friction member.