A transmission mechanism includes an output member and a worm wheel shaft configured to be connected to a power device to transmit a power of the power device to the output member. The worm wheel shaft and the output member are engaged with each other through a relative movement along an axial direction. An engagement between the worm wheel shaft and the output member limits a relative rotation between the worm wheel shaft and the output member.

A roller gear cam mechanism is equipped with a cam and a rotating member along the outer circumferential direction of which multiple bearings are arranged. The bearings are equipped with a shaft member and an outer ring portion capable of rotating around the shaft member. The outer circumferential surface of the outer ring portion has an arc shape, and in a cross section of the cam that includes the cam axis line, a contact portion of a cam rib making contact with the outer circumferential surface of the outer ring portion has an arc shape. The arc shape of the outer ring portion is formed so as to conform to the arc shape of the cam rib. The radius of curvature of the arc of the outer ring portion and the radius of curvature of the arc of the cam rib are determined in association with each other.

A flexible display device for a vehicle includes a casing having an opening, a display part to be retracted or extended into or out of the casing through the opening, a display driver configured to move the display part, and a display winder configured to wind the display part based on movement of the display part.

A double row roller cam transmission mechanism with backlash adjustment means is disclosed to include two passive wheels respectively provided with rollers, a transmission shaft with a spiral protrusion, and an adjustment device set operable to adjust the relative position between the two passive wheels so that the rollers of the two passive wheels can be respectively and positively abutted against the two opposite surfaces of the spiral protrusion of the transmission shaft to eliminate the backlash between the rollers and the spiral protrusion and to increase structural rigidity and transmission load

A transmission mechanism includes an adaptor configured to be connected to a power device, an output member engaged with the adaptor through a relative movement along an axial direction of the output member and configured to output a power of the power device transmitted by the adaptor to the output member, and a locking member rotatably provided on the output member and passing through the output member along the axial direction of the output member. The locking member includes an operating portion configured to connect the locking member with the adaptor to limit the relative movement along the axial direction or disconnect the locking member from the adaptor. The adaptor is configured to drive the output member to rotate coaxially with the adaptor to output the power. A relative rotation between the adaptor and the output member is limited by an engagement between the adaptor and the output member.

A worm gear assembly may include an input shaft having a first and second screw formed axially thereon, a first torque transfer unit comprising a first worm wheel operatively coupled to the first worm screw, a first radial pinion coaxially affixed to the first worm wheel, and a first axial crown wheel operatively coupled to the first radial pinion, and a second torque transfer unit comprising a second worm wheel operatively coupled to the second worm screw, a second radial pinion coaxially affixed to the second worm wheel, and a second axial crown wheel operatively coupled to the second radial pinion, wherein the first radial pinion is in meshed interface with the second radial pinion, and wherein torque differences between the first axial crown wheel and the second axial crown wheel are transmitted at least in part through said meshed interface.

An electric power steering device includes a worm shaft; a bearing rotatably supporting the worm shaft; a coil spring configured to bias the worm shaft toward the worm wheel via the bearing; a gear case including an insertion hole, the coil spring being insertable into the insertion hole; and plug configured to close the insertion hole. The plug includes a body part and a supporting part configured to support the coil spring. An outer peripheral surface of the plug is formed into a curved surface from the body part to the supporting part.

The present invention relates to a grease application device in which a tip-side inclined surface of a nozzle 28 is made to closely face worm wheel teeth 11 of a shaft-mounted worm wheel 9 while rotating the shaft-mounted worm wheel 9 by means of a drive unit 12. At this state, the grease application device is configured to apply liquid grease from a tip-side opening of the nozzle 28 to the worm wheel teeth 11 of the shaft-mounted worm wheel 9 and to apply the grease while pushing the grease into concave portions of the worm wheel teeth 11. Also, the grease application device is configured to end the application of the grease at a point of time at which the shaft-mounted worm wheel has rotated one revolution with respect to the nozzle 28 after starting the application of the grease to the shaft-mounted worm wheel 9.

A transmission mechanism includes an adaptor configured to be connected to a power device, an output member engaged with the adaptor through a relative movement along an axial direction of the output member and configured to output a power of the power device transmitted by the adaptor to the output member, and a locking member rotatably provided on the output member and passing through the output member along the axial direction of the output member. The locking member includes an operating portion configured to connect the locking member with the adaptor to limit the relative movement along the axial direction or disconnect the locking member from the adaptor. The adaptor is configured to drive the output member to rotate coaxially with the adaptor to output the power. A relative rotation between the adaptor and the output member is limited by an engagement between the adaptor and the output member.

A cam device includes: a cam unit, a reduction unit and a housing. The cam unit includes a rotating body and a cam. The rotating body includes a cam follower. The cam includes a cam surface that engages with the cam follower, and the cam is configured to rotate the rotating body by rotation of the cam. The reduction unit is provided between a motor and the cam, and includes a motor gear and a cam gear. The motor gear is mounted on a motor side of the reduction unit. The cam gear is mounted on a cam side of the reduction unit. The housing includes a first housing part and a second housing part as a unit. The first housing part accommodates the cam unit, and the second housing part accommodates the reduction unit.