Abstract: A differential device includes: first and second side gears disposed side by side in the rotational axis direction; a pinion gear set in which two second pinion gears are meshed with a first pinion gear; and a housing that holds the pinion gear set. The first pinion gear has an axially one end-side gear portion meshed with the first side gear, and an axially other end-side gear portion meshed with the two second pinion gears. The axially one end-side gear portion and the axially other end-side gear portion are integral with each other. The two second pinion gears are meshed with the second side gear at positions away from each other in the circumferential direction of the second side gear. The axially other end-side gear portion of the first pinion gear is meshed with the two second pinion gears at positions on the radially outer side of the second side gear.

Abstract: A connection-disconnection device configured to switch between a connected state and a released state of a side gear and a coupling shaft, each supported by a case member so as to be rotatable relative to the case member. The connection-disconnection device has an input shaft coupled to the side gear so as not to be rotatable relative to the side gear, axial movement of the input shaft being restricted with respect to the side gear, a dog member coupled to the coupling shaft so as not to be rotatable relative to the coupling shaft and so as to be movable with respect to the coupling shaft in an axial direction, and a moving mechanism configured to move the dog member back and forth in the axial direction. Each of the input shaft and the dog member has an annular meshing portion that mesh with each other.

Abstract: A differential device includes: first and second side gears disposed side by side in the rotational axis direction; a pinion gear set in which two second pinion gears are meshed with a first pinion gear; and a housing that holds the pinion gear set. The first pinion gear has an axially one end-side gear portion meshed with the first side gear, and an axially other end-side gear portion meshed with the two second pinion gears. The axially one end-side gear portion and the axially other end-side gear portion are integral with each other. The two second pinion gears are meshed with the second side gear at positions away from each other in the circumferential direction of the second side gear. The axially other end-side gear portion of the first pinion gear is meshed with the two second pinion gears at positions on the radially outer side of the second side gear.

Abstract: A vehicle differential apparatus is provided with: a differential case rotatable around a rotation axis in which a first shaft insertion hole is formed along a direction perpendicular to the rotation axis, a pair of side gears, a pinion gear meshing with the paired side gears in which a second shaft insertion hole is formed in an axial center portion of the pinion gear, and a pinion shaft including an insertion end portion inserted in the first shaft insertion hole of the differential case and a pinion gear support portion inserted in the second shaft insertion hole of the pinion gear to rotatably support the pinion gear. The pinion gear is supported so as to be movable in the rotation axis direction by a meshing reaction force generated from a meshing engagement with the pair of side gears.

Abstract: A vehicle differential apparatus is provided with: a differential case rotatable around a rotation axis in which a first shaft insertion hole is formed along a direction perpendicular to the rotation axis, a pair of side gears, a pinion gear meshing with the paired side gears in which a second shaft insertion hole is formed in an axial center portion of the pinion gear, and a pinion shaft including an insertion end portion inserted in the first shaft insertion hole of the differential case and a pinion gear support portion inserted in the second shaft insertion hole of the pinion gear to rotatably support the pinion gear. The pinion gear is supported so as to be movable in the rotation axis direction by a meshing reaction force generated from a meshing engagement with the pair of side gears.

Abstract: In a vehicle differential unit according to an embodiment of the invention, a planetary carrier that is a rotatable member that rotatably supports planetary gears is formed of cylindrical members that are unable to rotate relative to each other on the rotational axis of a pair of output shafts. The vehicle differential unit has a thrust force generation portion that receives a driving force from a drive source of a vehicle and generates a thrust force along the direction of the rotational axis of the pair of output shafts, and a relative movement limiting portion that limits a relative movement between the cylindrical members along the axial direction due to the thrust force when the vehicle is in the drive mode.

Abstract: A differential apparatus has a planet carrier 2A rotated by driving torque from a driving source, a planetary gear 2B rotated for self-rotation around its own axis by receiving rotational force of the planet carrier 2A, a sun gear 2C and an internal gear 2D differentially distributing the rotational force to a pair of output shafts by receiving the rotational force of the planet carrier 2A from the planetary gear 2B, and a differential restricting mechanism 2 having an inner clutch plates 3A and an outer clutch plates 3B restricting a differential of the differential mechanism 3. The planet carrier 2A is disposed between the sun gear 2C and the internal gear 2D, and the sun gear 2C and internal gear 2D are respectively connected each other to be able to transmit torque through the inner clutch plates 3A and the outer clutch plates 3B.

Abstract: A planetary carrier, formed of a cylindrical body, that receives a drive torque from a drive power source and differentially distributes the drive torque to a pair of output shafts, the planetary carrier including a gear holding portion that rotatably holds a planetary gear having two large and small gear portions, of which pitch circle diameters differ from each other. The gear holding portion has a first supporting surface that slidably supports tooth tip surfaces of the gear portion, of which the pitch circle diameter is larger, on a portion except on the radially inner side with respect to the carrier, and a second supporting surface that slidably supports tooth tip surfaces of the gear portion, of which the pitch circle diameter is smaller, on a portion except on the radially outer side with respect to the carrier.

Abstract: It is an object of the present invention to provide a hybrid differential gear device achieving the small and light devices as a whole and easy assembling of a differential case. A hybrid differential gear device has a first differential gear mechanism 2 and a second differential gear mechanism 3. The first differential gear mechanism 2 has a plurality of planetary gears 5 as an input element, a sun gear 6 engaging with the plural planetary gears 5 as a first output element, and an internal gear engaging with the plural planetary gears 5 as a second output element. The second differential gear mechanism 3 has side gears 14R, 14L connected respectively to a right and a left front tire wheel, pinion gears 12, 13 engaging with the side gears 14R, 14L, and a pinion gear shaft 15 supporting rotatably the pinion gears 12, 13. The pinion gear shaft 15 is supported non-rotatably and movably to a direction of a rotational axis of a differential case 4.

Abstract: An electromagnetic clutch is provided which produces sufficiently large clutch force by increasing the clutch capacity without increasing the number of inner and outer clutch plates. The electromagnetic clutch includes an intermediate member (8) that is connected to inner clutch plates (7a) so as not to be rotatable relative thereto and moves toward a clutch mechanism (7) under rotational force of a rotational member (5). The intermediate member (8) has: a pressing portion (23a) for pressing an armature (21) in the direction to frictionally couple the inner and outer clutch plates (7a, 7b) as the intermediate member (8) moves toward the clutch mechanism (7); and a movement force conversion section (24) for converting rotational force of a rotational member (6) into movement force toward the clutch mechanism (7). The movement force conversion section (24) is arranged between the intermediate member (8) and the rotational member (5).

Abstract: A differential apparatus for a vehicle comprises a pair of output gears 3, 4, first and second pinion gear 5, 6 intermeshing with the output pinion gears, and a differential case 2 accommodating the output gears and pinion gears. The second pinion gear 6 has large and small gear portions 6A, 6B whose pitch diameters are different and whose which tooth numbers is same respectively, and a tooth crest 60 and a tooth recess 61 formed to be shared by the large and the small gear portions 6A, 6B continuously from the large gear portion 6B to the small gear portion 6A.

Abstract: A differential gear mechanism includes a housing, first and second sun gears each including an external gear portion, and first and second planetary gears. The first and second sun gears include axial end surfaces pressed against contact surfaces provided at the housing by the first and second sun gears by means of thrust forces generated at engagement surfaces between the external gear portions and the planetary gears. Each of the sun gears includes a first portion having the external gear portion, a second portion, and a thrust force generating mechanism for generating thrust forces at the first portion and the second portion. A direction of the thrust force generated at the first portion by the thrust force generating mechanism is specified to be equal to a direction of the thrust force generated at the first portion by means of the engagement between the external gear portion and the planetary gear.

Abstract: In a vehicle differential unit according to an embodiment of the invention, a planetary carrier that is a rotatable member that rotatably supports planetary gears is formed of cylindrical members that are unable to rotate relative to each other on the rotational axis of a pair of output shafts. The vehicle differential unit has a thrust force generation portion that receives a driving force from a drive source of a vehicle and generates a thrust force along the direction of the rotational axis of the pair of output shafts, and a relative movement limiting portion that limits a relative movement between the cylindrical members along the axial direction due to the thrust force when the vehicle is in the drive mode.

Abstract: It is an object of the present invention to provide a differential apparatus for a vehicle obtaining efficiently differential restricting force necessary and enough for a stable running performance and reducing the total cost and the total length of the apparatus. The differential apparatus for the vehicle comprises a differential mechanism having a planet carrier 2A rotated by driving torque from a driving source, an planetary gear 2B rotated for self-rotation around own axis by receiving rotational force of the planet carrier 2A, and a sun gear 2C and an internal gear 2D differentially distributing the rotational force to a pair of output shafts by receiving the rotational force of the planet carrier 2A from the planetary gear 2B, and a differential restricting mechanism 2 having an inner clutch plates 3A and an outer clutch plates 3B restricting a differential of the differential mechanism 3.

Abstract: A planetary carrier, formed of a cylindrical body, that receives a drive torque from a drive power source and differentially distributes the drive torque to a pair of output shafts, the planetary carrier including a gear holding portion that rotatably holds a planetary gear having two large and small gear portions, of which pitch circle diameters differ from each other. The gear holding portion has a first supporting surface that slidably supports tooth tip surfaces of the gear portion, of which the pitch circle diameter is larger, on a portion except on the radially inner side with respect to the carrier, and a second supporting surface that slidably supports tooth tip surfaces of the gear portion, of which the pitch circle diameter is smaller, on a portion except on the radially outer side with respect to the carrier.

Abstract: It is an object of the present invention to provide a differential apparatus for a vehicle with a gear obtaining a sufficient mechanical strength against any torsion torque and preventing from being large and heavy as a whole and preventing from making a high manufacturing cost. The differential apparatus for the vehicle with the gear comprises a pair of output gears 3, 4, a first pinion gear 5 intermeshing with one of output pinion gears 3, 4 with a parallel gear axis to the first pinion gear 5, a second pinion gear 6 intermeshing with both of the other of output pinion gears 3, 4 and the first pinion gear 5 with parallel gear axes to the second pinion gear 6 respectively, and a differential case 2 accommodating the pair of output gears 3, 4, the first pinion gear 5 and the second pinion gear 6.

Abstract: A differential gear mechanism includes a housing, first and second sun gears each including an external gear portion, and first and second planetary gears. The first and second sun gears include axial end surfaces pressed against contact surfaces provided at the housing by the first and second sun gears by means of thrust forces generated at engagement surfaces between the external gear portions and the planetary gears. Each of the sun gears includes a first portion having the external gear portion, a second portion, and a thrust force generating mechanism for generating thrust forces at the first portion and the second portion. A direction of the thrust force generated at the first portion by the thrust force generating mechanism is specified to be equal to a direction of the thrust force generated at the first portion by means of the engagement between the external gear portion and the planetary gear.

Abstract: It is an object of the present invention to provide a hybrid differential gear device achieving the small and light devices as a whole and easy assembling of a differential case. A hybrid differential gear device has a first differential gear mechanism 2 and a second differential gear mechanism 3. The first differential gear mechanism 2 has a plurality of planetary gears 5 as an input element, a sun gear 6 engaging with the plural planetary gears 5 as a first output element, and an internal gear engaging with the plural planetary gears 5 as a second output element. The second differential gear mechanism 3 has side gears 14R, 14L connected respectively to a right and a left front tire wheel, pinion gears 12, 13 engaging with the side gears 14R, 14L, and a pinion gear shaft 15 supporting rotatably the pinion gears 12, 13. The pinion gear shaft 15 is supported non-rotatably and movably to a direction of a rotational axis of a differential case 4.

Abstract: An internal gear 10 is rotatably received within a housing 8 (planetary carrier 2 and case 4), and a sun gear 12 is rotatably disposed on a circle located inside of and concentric with the internal gear 10. Planet gears 14 which are carried within carrying openings 2c formed in a planetary carrier 2 are disposed between the internal gear 10 and the sun gear 12 in meshing engagement with the internal gear 10 and the sun gear 12. The internal gear 10, the sun gear 12 and the planet gears 14 each have spherical gear teeth, and develops a thrust upon occurrence of a relative rotation therebetween. A coupling 16 is connected to the inner periphery of the internal gear 10 through helical splines 10d and 16a for purpose of power transmission. The helical splines provide a novel thrust generating mechanism, which enlarges the extent in which a bias ratio can be adjusted.

Abstract: An interaxle transfer case distributes drive power from an input drive shaft to both a rear propshaft aligned with the input drive shaft and to a front propshaft that is offset from both the input drive shaft and the rear propshaft. Within the transfer case, a planetary gear unit provides for delivering drive power from the input drive shaft to the front and rear propshafts at different speed ratios. A single-pinion differential gear unit within the transfer case provides for unequally dividing drive torque between the front and rear propshafts. Planet gears of the planetary gear unit and pinion gears from the single-pinion differential gear unit are mounted for rotation within a common carrier. The common carrier has one or more extended portions for supporting ends of a transfer case housing.