A universal joint (U-joint) assembly transmits torque from a drive component to a driven component across an articulating joint. The U-joint assembly includes male and female U-joint members, a central ball joint, and a retaining device configured to secure the assembly in an assembled configuration. The female U-joint member includes a cavity extending into a receptacle end thereof. The cavity terminates in a circular receptacle and includes a plurality of rectangular channels extending radially outward from the cavity at equal intervals, each channel defined by three planar drive surfaces. The male U-joint member has a drive end with a plurality of corresponding rectangular extensions protruding from an outer periphery of the drive end, each extension including a plurality of axial angular surfaces. When assembled, each of the angular surfaces of the drive end opposes a corresponding one of the drive surfaces of the cavity. Other embodiments are also disclosed.

A universal joint (U-joint) assembly transmits torque from a drive component to a driven component across an articulating joint. The U-joint assembly includes male and female U-joint members, a central ball joint, and a retaining device configured to secure the assembly in an assembled configuration. The female U-joint member includes a cavity extending into a receptacle end thereof. The cavity terminates in a circular receptacle and includes a plurality of rectangular channels extending radially outward from the cavity at equal intervals, each channel defined by three planar drive surfaces. The male U-joint member has a drive end with a plurality of corresponding rectangular extensions protruding from an outer periphery of the drive end, each extension including a plurality of axial angular surfaces. When assembled, each of the angular surfaces of the drive end opposes a corresponding one of the drive surfaces of the cavity. Other embodiments are also disclosed.

A shaft (1) is shown comprising a shaft section (2) having an axis (3), a tooth geometry (4) at least at one end of said shaft section, said tooth geometry (4) having a first end (5) opposite said shaft section (2) and a second end (6) adjacent said shaft section (2), a number of teeth (7) distributed in circumferential direction around said axis (3), a bottom curve (9) between adjacent teeth (7), and an outer tooth curve (12), said bottom curve (9) having a positive slope from said first end (5) towards said shaft section (2) and a negative slope (14) at said second end (6). In such a shaft wear should be made as small as possible. To this end said bottom curve (9) comprises a section having a concave bottom curvature (15) between said positive slope and said negative slope.

A drive shaft is formed by welding two spline shaft heads to a hollow middle section of tubing. The spline shaft head includes teeth which are crowned to permit an angular offset of the drive shaft relative to cylindrical splines of connectors, such that the end faces of the teeth define a barrel shape. The teeth of the spline shaft head include a side face curvature, defining a football-shaped tooth cross-section. Torque is rotationally transmitted across a permitted angular offset of the drive shaft relative to cylindrically arranged linear splines of drive and driven connectors (i.e., relative to the engine output axis of rotation and the differential input axis of rotation), thereby avoiding the use of prior art universal joints.

Motor shaft adapters include a cylindrical shaft sleeve with a tubular body defined between inner and outer cylindrical surfaces, and frame adapters that include a section of structural tubing and flanges having sides aligned to the sides of the structural tubing section and fixed at respective ends of the section of structural tubing into assembly between a motor and gearhead. Key slot apertures are defined by opposing body end-walls of the tubular body and through the inner and outer cylindrical surfaces of the sleeve. A shaft key has outer sidewalls that include opposing outer sleeve aperture sidewall portions that enable the shaft key sidewall portions to fit within and to thereby engage the sleeve via the key slot aperture. The key sidewalls further include a base pair of opposing key seat engagement portions that fit within and engage opposing sidewalls of a key seat aperture defined within a workpiece shaft.

A driving tool with universal rotating structure includes a first drive joint member and a second drive joint member. The first drive joint member defines a compartment and at least one slot. The first end of the at least one slot includes is in communication with the compartment. The at least one slot extends through an outer periphery of the first drive joint member. The at least one slot includes a retaining member movably disposed therein. The outer periphery of the first drive joint member includes an enclosing ring disposed thereon. The enclosing ring is elastic and includes an inner periphery abutting against a side of the retaining member. The second drive joint member includes a head rotatably coupled to the first drive joint member. The head is disposed in the compartment. The head extends from a first end to a second end concavely along a second axis.

An electronic device and a coupler of the electronic device are provided. The coupler is adapted to be connected to a power source and a rotatable member. The coupler includes a plate body and a coupler protrusion. A coupler groove is formed on the plate body, and the power source is adapted to be wedged into the coupler groove. The coupler protrusion is disposed on the plate body and adapted to be wedged into the rotatable member.

An electronic device and a coupler of the electronic device are provided. The coupler is adapted to be connected to a power source and a rotatable member. The coupler includes a plate body and a coupler protrusion. A coupler groove is formed on the plate body, and the power source is adapted to be wedged into the coupler groove. The coupler protrusion is disposed on the plate body and adapted to be wedged into the rotatable member.

Articulable joints having diamond bearing surfaces engaged with metal bearing surfaces are provided herein. The articulable joints provide multiple degrees of freedom to components, such as drivelines, and bear loads in multiple directions. The articulable joints include diamond bearing surfaces slidingly engaged with opposing metal bearing surfaces that include more than trace amounts of diamond solvent-catalyst.

A corner module of a vehicle includes: a suspension configured to be coupled to a vehicle body; a case configured to be coupled to the suspension and configured to be to be supported on the vehicle body via the suspension; an in-wheel motor disposed inside the case; a steering motor disposed inside the case; a first power transmission mechanism configured to connect the in-wheel motor and a vehicle wheel and configured to transmit a rotating force of the in-wheel motor to the vehicle wheel to drive the vehicle wheel; and a second power transmission mechanism configured to connect the steering motor and the vehicle wheel and configured to transmit a rotating force of the steering motor to the vehicle wheel to steer the vehicle wheel.