Abstract: A shaft grounding member for a rolling bearing, the shaft grounding member being mounted on a rolling bearing unit including the rolling bearing in which one bearing ring is a fixed ring and the other bearing ring is a rotating ring, includes: a spring plate including an annular portion and an elastic portion extending continuously from the annular portion in a radial direction, the spring plate being made of a thin plate of a conductive material; a soft conductive member mounted on a surface of the elastic portion facing the rotating ring or a rotating member to which the rotating ring is fitted; and a flexible member mounted on a side surface of the annular portion. The soft conductive member is capable of abutting against at least a part of a surface of the rotating ring or at least a part of a surface of the rotating member.

Abstract: A one-way clutch includes cams, a retainer, and a spring. The cam includes an outer surface facing an outer ring, and a groove portion. The retainer includes a retainer body. The retainer body includes a first side plate and protrusions protruding from the first side plate. The protrusions include column portions and at least one spring protrusion. A window portion with the cam arranged is formed between two column portions adjacent to each other. One side in the axial direction of the window portion is closed by the first side plate, and the other side is open. A hook portion protruding outward in the radial direction and arranged on the other side in the axial direction relative to the spring is formed on the spring protrusion. The first side plate is provided with a cutaway formed by cutting away a portion facing the hook portion in the axial direction.

Abstract: A shaft grounding member for a rolling bearing, the shaft grounding member being mounted on a rolling bearing unit including the rolling bearing in which one bearing ring is a fixed ring and the other bearing ring is a rotating ring, the shaft grounding member includes: a spring plate including an annular portion, a coupling portion extending continuously from the annular portion in a radial direction, and an elastic portion bending from the coupling portion in an axial direction of the rotating ring, the spring plate being made of a thin plate of a conductive material; and a soft conductive member mounted on a surface of the elastic portion that faces a rotating member to which the rotating ring is fitted. The soft conductive member is capable of abutting against at least a part of a peripheral surface of the rotating member.

Abstract: An electrolytic corrosion prevention member for a rolling bearing, the electrolytic corrosion prevention member being mounted on a rolling bearing unit including the inner ring rotating type rolling bearing in which an outer ring is fixed to a housing and a shaft directly connected to a motor is fitted to an inner ring in order to prevent electrolytic corrosion of the rolling bearing, the electrolytic corrosion prevention member includes: a spring plate including an annular portion and an elastic portion that extends continuously from an inner peripheral side end portion of the annular portion to a center of the annular portion and being formed of a thin plate of a conductive material; and a soft conductive member mounted on a surface of the elastic portion on a side facing the rolling bearing. The soft conductive member is capable of abutting against an end surface of the shaft.

Abstract: An electromagnetic noise prevention member for a rolling bearing, the electromagnetic noise prevention member being mounted on a rolling bearing unit including the rolling bearing in which one bearing ring is a fixed ring and the other bearing ring is a rotating ring, the electromagnetic noise prevention member includes: a spring plate including an annular portion and at least one elastic portion that extends continuously from the annular portion in a radial direction, the spring plate being made of a thin plate of a conductive material; and a soft conductive member mounted on a surface of the elastic portion that faces the rotating ring or a rotating member to which the rotating ring is fitted. The soft conductive member is capable of abutting against at least a part of a surface of the rotating ring or at least a part of a surface of the rotating member.

Abstract: A shaft grounding member for a rolling bearing, the shaft grounding member being mounted on a rolling bearing unit including the rolling bearing in which one bearing ring is a fixed ring and the other bearing ring is a rotating ring, the shaft grounding member includes: a spring plate including an annular portion and at least one elastic portion that extends continuously from the annular portion in a radial direction, the spring plate being made of a thin plate of a conductive material; and a soft conductive member mounted on a surface of the elastic portion that faces the rotating ring or a rotating member to which the rotating ring is fitted. The soft conductive member contains a lubricant in advance, and is capable of abutting against at least a part of a surface of the rotating ring or at least a part of a surface of the rotating member.

Abstract: A ratchet type clutch device includes: an outer ring and an inner ring, in which the inner ring includes an outer peripheral surface having tooth portions, the outer ring having claw members that mesh with the tooth portions, each of the claw members includes a shaft portion, a claw portion meshing with one of the tooth portions, and a torque transmission unit projecting from the shaft portion, the shaft portion includes an outer peripheral surface including a first outer peripheral surface, the outer ring includes an outer peripheral holding surface, and a facing surface, the first outer peripheral surface is provided with a top portion, and when the claw portion meshes with the tooth portion, the claw portion is tilted with the top portion abutting on the outer peripheral holding surface, and the leading end surface of the torque transmission unit comes into contact with the facing surface.

Abstract: According to an aspect, a selectable one-way clutch includes a first inner ring, a first outer ring, a shift drum, and a first selectable plate including a plate body arranged in a first direction with respect to the first outer ring, and a first cam portion that extends in a second direction and lifts a first claw member against biasing force of a first biasing member. An end portion on a radially outer side of the plate body is a first power transmission portion. A coupling portion coupled to a linear motion mechanism is formed on the shift drum. A side surface of the shift drum facing the first direction is a first pressing surface. When the shift drum is moved in the first direction, the first power transmission portion is pressed in the first direction and lifting of the first claw member by the first cam portion is released.

Abstract: According to an aspect, a power transmission device includes: an annular fixed part including an inner peripheral surface; an output shaft including an outer peripheral surface facing the inner peripheral surface and a recessed surface recessed radially inward from the outer peripheral surface; an input shaft including a pressing portion accommodated in the recessed surface; a pair of first rolling elements that are accommodated in the recessed surface and are arranged on opposite sides in a circumferential direction with respect to the pressing portion; and a pair of second rolling elements each of which has a smaller diameter than a diameter of each first rolling element and is arranged between the corresponding first rolling element and the pressing portion.

Abstract: An electrolytic corrosion prevention member for a rolling bearing, the electrolytic corrosion prevention member being mounted on a rolling bearing unit including the rolling bearing in which one bearing ring is a fixed ring and the other bearing ring is a rotating ring in order to prevent electrolytic corrosion of the rolling bearing, the electrolytic corrosion prevention member includes: a spring plate including an annular portion and a plurality of elastic portions that extend continuously from the annular portion in a radial shape and being formed of a thin plate of a conductive material; and a soft conductive member mounted on a surface of the elastic portion that faces the rotating ring. The soft conductive member is capable of abutting against a side surface of the rotating ring.

Abstract: A shaft grounding member for a rolling bearing, in which one bearing ring is a fixed ring and the other bearing ring is a rotating ring, includes: a spring plate including an annular portion and a plurality of elastic portions extending continuously from the annular portion in a radial shape, the spring plate being made of a thin plate of a conductive material; and a soft conductive member mounted on a surface of the elastic portion facing the rotating ring. The soft conductive member is configured to abut against a side surface of the rotating ring. The spring plate includes a plurality of bent portions provided at a portion of the annular portion facing a side surface of the fixed ring so as to be bent in an axial direction, the plurality of bent portions being deformed to apply a pressing force to the fixed ring.

Abstract: A shaft grounding member for a rolling bearing includes: a spring plate including an annular portion and an elastic portion extending continuously from an inner peripheral side end portion of the annular portion to a center of the annular portion, the spring plate being made of a thin plate of a conductive material; and a soft conductive member mounted on a surface of the elastic portion on a side facing the rolling bearing. The soft conductive member is configured to abut against an end surface of a shaft. The spring plate includes a plurality of bent portions provided at a portion of the annular portion facing a side surface of an outer ring so as to be bent in an axial direction, the plurality of bent portions being deformed to apply a pressing force to the outer ring.

Abstract: A power transmission device includes: a fixing member having a cylindrical surface; an output shaft having a facing surface facing the cylindrical surface; an input shaft having a pressing portion disposed between the cylindrical surface and the facing surface; and a pair of rolling elements. The facing surface includes a recessed surface. The recessed surface has a bottom surface and a pair of pressed surfaces. The bottom surface has a central surface and a pair of cam surfaces. A distance between the cam surface and the cylindrical surface increases from the central surface toward the pressed surface. A distance between the cam surface and the cylindrical surface is smaller than a diameter of the rolling element in the portion closer to the central surface, and is greater than the diameter of the rolling element in the portion closer to the pressed surface.

Abstract: A ratchet type clutch device includes outer and inner rings. A shutter plate of the inner ring has restriction tooth portions formed on an outer peripheral surface thereof. When viewed from an axial direction, a state where the restriction tooth portions are misaligned in a first rotation direction for tooth portions and overlap with a part of grooves is set as a closed state of the shutter plate, and a state where all the restriction tooth portions overlap with the tooth portions is set as an open state of the shutter plate. An elastic member biases the shutter plate from the open state to the closed state. Each of first claw members is formed to be able to enter into the corresponding groove in the closed state, and each of second claw members is formed to be able to enter into the corresponding groove in the open state.

Abstract: A ratchet type clutch device includes outer and inner rings. A shutter plate of the inner ring has restriction tooth portions formed on an outer peripheral surface thereof. When viewed from an axial direction, a state where the restriction tooth portions are misaligned in a first rotation direction for tooth portions and overlap with a part of grooves is set as a closed state of the shutter plate, and a state where all the restriction tooth portions overlap with the tooth portions is set as an open state of the shutter plate. An elastic member biases the shutter plate from the open state to the closed state. Each of first claw members is formed to be able to enter into the corresponding groove in the closed state, and each of second claw members is formed to be able to enter into the corresponding groove in the open state.

Abstract: The present invention provides conductive paper with excellent electrical conductivity, strength, and heat resistance, and a method for producing the same, the conductive paper including: a paper substrate containing at least a carbon fiber and a fibrillated fiber, and in which an amount of the fibrillated fiber is from 10 to 120% by mass with respect to the carbon fiber; and a cured product of a thermosetting resin at least partially impregnated into the paper substrate; and the method for producing conductive paper, the method including the steps of: preparing a slurry containing at least a carbon fiber and a fibrillated fiber, and in which an amount of the fibrillated fiber is from 10 to 120% by mass with respect to the carbon fiber; obtaining a paper substrate by subjecting the slurry to a papermaking process; impregnating the paper substrate with a thermosetting resin; and heating the paper substrate impregnated with the thermosetting resin to cure the thermosetting resin.

Abstract: A ratchet type clutch device includes: an outer ring and an inner ring, in which the inner ring includes an outer peripheral surface having tooth portions, the outer ring having claw members that mesh with the tooth portions, each of the claw members includes a shaft portion, a claw portion meshing with one of the tooth portions, and a torque transmission unit projecting from the shaft portion, the shaft portion includes an outer peripheral surface including a first outer peripheral surface, the outer ring includes an outer peripheral holding surface, and a facing surface, the first outer peripheral surface is provided with a top portion, and when the claw portion meshes with the tooth portion, the claw portion is tilted with the top portion abutting on the outer peripheral holding surface, and the leading end surface of the torque transmission unit comes into contact with the facing surface.

Abstract: A power transmission device includes: a fixing member having a cylindrical surface; an output shaft having a facing surface facing the cylindrical surface; an input shaft having a pressing portion disposed between the cylindrical surface and the facing surface; and a pair of rolling elements. The facing surface includes a recessed surface. The recessed surface has a bottom surface and a pair of pressed surfaces. The bottom surface has a central surface and a pair of cam surfaces. A distance between the cam surface and the cylindrical surface increases from the central surface toward the pressed surface. A distance between the cam surface and the cylindrical surface is smaller than a diameter of the rolling element in the portion closer to the central surface, and is greater than the diameter of the rolling element in the portion closer to the pressed surface.

Abstract: An electrolytic corrosion prevention member for a rolling bearing, the electrolytic corrosion prevention member being mounted on a rolling bearing unit including the inner ring rotating type rolling bearing in which an outer ring is fixed to a housing and a shaft directly connected to a motor is fitted to an inner ring in order to prevent electrolytic corrosion of the rolling bearing, the electrolytic corrosion prevention member includes: a spring plate including an annular portion and an elastic portion that extends continuously from an inner peripheral side end portion of the annular portion to a center of the annular portion and being formed of a thin plate of a conductive material; and a soft conductive member mounted on a surface of the elastic portion on a side facing the rolling bearing. The soft conductive member is capable of abutting against an end surface of the shaft.

Abstract: An electrolytic corrosion prevention member for a rolling bearing, the electrolytic corrosion prevention member being mounted on a rolling bearing unit including the rolling bearing in which one bearing ring is a fixed ring and the other bearing ring is a rotating ring in order to prevent electrolytic corrosion of the rolling bearing, the electrolytic corrosion prevention member includes: a spring plate including an annular portion and a plurality of elastic portions that extend continuously from the annular portion in a radial shape and being formed of a thin plate of a conductive material; and a soft conductive member mounted on a surface of the elastic portion that faces the rotating ring. The soft conductive member is capable of abutting against a side surface of the rotating ring.