A rotary drive device includes a housing element, a drive shaft and a driven shaft, both rotatably mounted in the housing element, a transmission device that transmits torque from the drive shaft to the driven shaft, and a braking device configured to counteract rotation of the drive shaft. The braking device includes a drive shaft input element, a braking element connected to the housing element for conjoint rotation, and a coupling element adjustable with respect to the input element. A braking force exerted by the braking device is greater when the coupling element is located in a first position than when located in a second position, and the coupling element assigned to the driven shaft so that adjustment from the first position to the second position is triggered by exceeding a threshold value of the difference in torque between the drive shaft and the driven shaft.

A power transmission device is disclosed. The power transmission device includes an input rotary member, an intermediate rotary member, an output rotary member, a friction engaging part and a load adjusting mechanism. A torque is inputted to the input rotary member. The torque is inputted from the input rotary member to the intermediate rotary member. The torque is outputted from the output rotary member. The friction engaging part is engaged by friction with a friction force depending on a load applied thereto. The friction engaging part is configured to transmit the torque between the intermediate rotary member and the output rotary member. The load adjusting mechanism is configured to adjust the load applied to the friction engaging part in accordance with the torque inputted to the input rotary member.

A friction clutch mechanism for a steering column of a vehicle is disclosed.

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 hub and a carrier supported for rotation about a common axis. The carrier has a fixed portion and a sliding member that cooperate to define a groove. Movement of the sliding member changes a width of the groove. The clutch further includes a disk having a first edge disposed on the hub and a second edge disposed in the groove. The disk frictionally engages between the hub and the carrier when the clutch is locked. The sliding member is biased such that the groove has a first width for a first range of torques between the disk and the groove and a second width that is greater than the first width for a second range of torques between the disk and the groove that is greater than the first range of torques.

A clutch includes a hub and a carrier supported for rotation about a common axis. The carrier has a fixed portion and a sliding member that cooperate to define a groove. Movement of the sliding member changes a width of the groove. The clutch further includes a disk having a first edge disposed on the hub and a second edge disposed in the groove. The disk frictionally engages between the hub and the carrier when the clutch is locked. The sliding member is biased such that the groove has a first width for a first range of torques between the disk and the groove and a second width that is greater than the first width for a second range of torques between the disk and the groove that is greater than the first range of torques.

A torque assembly including an outer component, an inner component fitted within the outer component, and a tolerance ring provided between the outer component and the inner component to transmit torque between the inner and outer components, wherein torque transferred between the inner and outer components is adjustable by modifying the axial spacing between the inner component and the outer component.

Hybrid automotive transmission arrangement with a gear transmission for establishing at least one transmission ratio between a transmission input and a transmission output, wherein the gear transmission has a gear set with a coupling gear. An electric machine has a machine output shaft with a drive gear, which is coupled directly or via a coupling gear set to the coupling gear of the transmission gear set so that a power transmission pathway is established from the machine output shaft to the coupling gear. A slip clutch is arranged in the power transmission path.

A coupling device includes a first rotating body and a second rotating body disposed coaxially with each other and rotatable relative to each other. The coupling device includes a spacer disposed between the first rotating body and the second rotating body; and a pressing member for performing pressing of at least one rotating body of the first rotating body and the second rotating body against the spacer. The spacer is formed of an elastic member, and generates a frictional force between the spacer and the one rotating body when the pressing member performs the pressing. The one rotating body and the spacer are formed to have a configuration that allows the one rotating body or the spacer to be idled when torque larger than the frictional force acts between the one rotating body and the spacer.

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.