Abstract: A driving assistance device enables a driver who manually performs an accelerator operation and a steering operation to easily retain an accelerator operation state in a constant state. A driving assistance device includes a manually operable accelerator operation unit in the vicinity of a steering wheel provided in front of a driver seat in a vehicle cabin. The accelerator operation unit is operable in a state where the steering wheel is gripped and an operation reaction force of the accelerator operation unit exhibits an inflection point POI at which the operation reaction force rapidly becomes large in response to an increase in an operation amount of the accelerator operation unit.

Abstract: A pneumatic tires includes a tread, a pair of sidewalls, and a pair of bead portions that are arranged at intervals wider than a rim width of a corresponding regular rim in a non-rim-assembled state. Each of the pair of the bead portions includes a bead base at an inner diameter side end, a bead heel, and a bead back surface extending from an outer diameter side end of the bead heel, to the outer diameter side. In the non-rim-assembled state, the bead back surface is formed with a recess that is recessed inward in the width direction. In a rim-assembled state, the bead back surface is in close contact with substantially the entire surface of a radial portion of a rim flange of a regular rim.

Abstract: A pneumatic tire includes a pair of bead portions that are arranged at intervals wider than a regular rim width in a non-rim-assembled state. The bead portion includes a rim protector, a bead base, a bead heel, and a bead back surface. In the non-rim-assembled state, the bead back surface is formed with a recess that is recessed inward in the tire width direction. The bead back surface has a second curved portion constituting a deepest portion of the recess and a third curved portion extending inward in the tire width direction from the rim protector. When a height of the deepest portion is H2, a height H8 of a virtual intersection of a curve obtained by extending the second curved portion and a curve obtained by extending the third curved portion is larger than 1.5 times H10 and smaller than 3.0 times H10.

Abstract: A pneumatic tires include a tread, a pair of sidewalls, and a pair of bead portions that are arranged at intervals wider than a rim width of a corresponding regular rim in a non-rim-assembled state. Each of the pair of bead portions includes a bead heel that curves outwards toward the outer side in the width direction and a bead back surface. In the non-rim-assembled state, the bead back surface is formed with a recess. The bead heel 35 includes a heel R portion having an arc shape. The bead back surface includes a recess R portion having an arc shape. A radius of curvature of the recess R portion is equal to or larger than a radius of curvature.

Abstract: A pneumatic tires includes a tread, a pair of sidewalls, and a pair of bead portions that are arranged at intervals wider than a rim width of a corresponding regular rim in a non-rim-assembled state. Each of the pair of the bead portions includes a bead base at an inner diameter side end, a bead heel, and a bead back surface extending from an outer diameter side end of the bead heel, to the outer diameter side. In the non-rim-assembled state, the bead back surface is formed with a recess that is recessed inward in the width direction. In a rim-assembled state, the bead back surface is in close contact with substantially the entire surface of a radial portion of a rim flange of a regular rim.

Abstract: A pneumatic tires include a tread, a pair of sidewalls, and a pair of bead portions that are arranged at intervals wider than a rim width of a corresponding regular rim in a non-rim-assembled state. Each of the pair of the bead portions includes a bead heel and a bead back surface. In the non-rim-assembled state, the bead back surface is formed with a recess. The bead back surface has a recess R portion having an arc shape. A center of curvature of the recess R portion is located in a radial range between a radial position that is 2.0 mm to the inner side in the tire radial direction and a radial position that is 9.0 mm to the outer side in the tire radial direction with reference to an outer end surface of a bead core in the tire radial direction.

Abstract: A pneumatic tire includes a pair of bead portions that are arranged at intervals wider than a regular rim width in a non-rim-assembled state. The bead portion includes a rim protector, a bead base, a bead heel, and a bead back surface. In the non-rim-assembled state, the bead back surface is formed with a recess that is recessed inward in the tire width direction. The bead back surface has a second curved portion constituting a deepest portion of the recess and a third curved portion extending inward in the tire width direction from the rim protector. When a height of the deepest portion is H2, a height H8 of a virtual intersection of a curve obtained by extending the second curved portion and a curve obtained by extending the third curved portion is larger than 1.5 times H10 and smaller than 3.0 times H10.

Abstract: A pneumatic tire includes a pair of bead portions that are arranged at intervals wider than a regular rim width in a non-rim-assembled state. The bead portions includes a bead base, a bead heel, and a bead back surface. In the non-rim-assembled state, the bead back surface is formed with a recess that is recessed inward in the tire width, a rim flange of the regular rim has a radial portion and a curved portion. In a rim-assembled state, the bead back surface is in close contact with substantially an entire surface of the radial portion. A tire radial distance from an apex of the curved portion to an outer surface of the bead back surface is set so that the outer surface of the bead back surface is separated from the curved portion even in a state where a load is input.

Abstract: A pneumatic tire includes a tread, a pair of sidewalls, and a pair of bead portions. Each of a pair of the bead portions includes a bead base, a bead heel, and a bead back surface. In a non-rim-assembled state, the bead back surface is formed with a recess, the bead base is formed to be inclined inward in the tire radial direction toward the inner side in the tire width direction, the bead back surface has a recess R portion and a tangential portion that connects the bead heel and the recess R portion, and in the non-rim-assembled state, a base portion inclination angle of the bead base with respect to a tire axial direction is set to be larger than a tangential portion inclination angle of the tangential portion with respect to the tire radial direction.

Abstract: An electric device comprises a master control unit and a plurality of drive units for automatically controlling actuating devices respectively, in series in a plant assembly or process line by simple manipulation of the master control unit. The master control and drive units are similar and interchangeable in basic circuitry for mass production and quick assembly with one another.