JP2014095478A5

JP2014095478A5 -

Info

Publication number: JP2014095478A5
Application number: JP2014023876A
Authority: JP
Filing date: 2014-02-10
Publication date: 2014-07-03
Anticipated expiration: 2027-03-26

Claims

A shaft coupling mechanism arranged between two rotating shafts to connect the two rotating shafts so as to transmit the rotation of one rotating shaft to the other rotating shaft, and a pair of rotation transmissions overlapped in the axial direction Each of the pair of rotation transmission members is spaced apart from each other in the direction around the axis and extends in the radial direction. The intermediate interposed member is disposed between the pair of projections of the pair of rotation transmitting members in the axial direction and has a width in the direction around the axis of each pair of projections. Each of the pair of protrusions of the intermediate interposed member has rigidity smaller than the rigidity of the pair of protrusions of each pair of rotation transmitting members and is elastic. Of the pair of rotation transmitting members that are deformable At least one has a bulge preventing means for preventing certain level of swelling in the radial direction of the free end face of the radial direction of the pair of projections of the intermediate interposed member, each of the pair of rotation transmitting members, circle A central base portion having an annular outer peripheral surface, and an annular outer base portion that is concentric with the central base portion and disposed radially outward, and each pair of rotation transmitting members The protrusion extends in a radial direction from the outer peripheral surface of the central base portion of the corresponding rotation transmitting member to the inner peripheral surface of the annular outer base portion, and is provided integrally with the central base portion and the outer base portion. A central base portion having an annular outer peripheral surface, and the pair of protrusions of the intermediate interposed member are integrally provided on the outer peripheral surface of the central base portion of the intermediate intermediate member and Extending radially outward from the outer peripheral surface of the central base, bulge prevention means , Which are integrally provided on the axial end surface of at least one outer base portion of the pair of rotation transmitting members and radially outward of the free end surface at the radially outer tip of the pair of protrusions of the intermediate interposed member. The shaft coupling mechanism which has the outer side prevention protrusion which blocks | prevents the bulging of the .

A shaft coupling mechanism arranged between two rotating shafts to connect the two rotating shafts so as to transmit the rotation of one rotating shaft to the other rotating shaft, and a pair of rotation transmissions overlapped in the axial direction Each of the pair of rotation transmission members is spaced apart from each other in the direction around the axis and extends in the radial direction. The intermediate interposed member is disposed between the pair of projections of the pair of rotation transmitting members in the axial direction and has a width in the direction around the axis of each pair of projections. Each of the pair of protrusions of the intermediate interposed member has rigidity smaller than the rigidity of the pair of protrusions of each pair of rotation transmitting members and is elastic. Of the pair of rotation transmitting members that are deformable At least one has bulging prevention means for preventing bulging of the radial free end surfaces of the pair of protrusions of the intermediate interposed member beyond a certain level in the radial direction. A central base portion having an annular outer peripheral surface, and an annular outer base portion that is concentric with the central base portion and disposed radially outward, and each pair of rotation transmitting members The protrusion extends in a radial direction from the outer peripheral surface of the central base portion of the corresponding rotation transmitting member to the inner peripheral surface of the annular outer base portion, and is provided integrally with the central base portion and the outer base portion. The outer base portion having an annular inner peripheral surface, and the pair of protrusions of the intermediate interposed member are integrally provided on the inner peripheral surface of the outer base portion of the intermediate intermediate member and the intermediate intermediate member The bulging prevention means extends radially inward from the inner peripheral surface of the outer base of the member. , Provided integrally with the axial end surface of at least one inner base portion of the pair of rotation transmitting members, and radially inward of the free end surface at the radially inner tip of the pair of protrusions of the intermediate interposed member. The shaft coupling mechanism which has the inner side prevention protrusion which blocks | prevents the bulging of the.

The intermediate interposed member includes a central base portion having an annular outer peripheral surface, and the pair of protrusions of the intermediate intermediate member are integrally provided on the outer peripheral surface of the central base portion of the intermediate intermediate member. The middle interposed member extends radially outward from the outer peripheral surface of the central base portion, and the bulging prevention means is integrally provided on the axial end surface of at least one outer base portion of the pair of rotation transmitting members. The shaft coupling mechanism according to claim 2, further comprising an outer blocking protrusion that prevents the free end face from bulging radially outward at the radially outer tip of the pair of protrusions of the intermediate interposed member.

One connecting base connected to one rotating shaft and the other connecting base connected to the other rotating shaft are further provided. One connecting base is integrated with a base portion in the axial direction from the base portion. And the other connecting base includes a base and a protrusion integrally protruding in the axial direction from the base, and the protrusion of the one connecting base is One of the protrusions between the pair of protrusions of the pair of rotation transmitting members in the direction around the axis and between the pair of protrusions of the intermediate interposed member in the direction around the axis The projections of the other connecting base disposed between the other projections of the pair of rotation transmitting members in the direction around the axis and the middle in the direction around the axis 4. The device according to claim 1, which is disposed between the other protrusions of the pair of protrusions of the interposition member. Shaft coupling mechanism according to.

The protrusions of the one and the other connecting base are on their respective sides in the direction around the axis, and around the axis of the protrusion of the intermediate interposed member that faces in the direction around the axis when the relative rotation of the two rotation axes is less than a certain level. The side surfaces in the direction around the axis of the protrusions of the pair of rotation transmitting members facing in the direction around the axis are not in contact with each other when the rotation of the two rotation axes is below a certain level. The shaft coupling mechanism according to claim 4, wherein the two shafts are in contact with each other at a relative rotation of a certain level or more.

A shaft coupling mechanism for an electric power steering apparatus, wherein one rotating shaft is coupled to an output rotating shaft of an electric motor, and the other rotating shaft is coupled to a steering shaft of an automobile. The shaft coupling mechanism according to any one of claims 1 to 5, wherein the shaft coupling mechanism is configured as described above.