Interrupter and differential

A differential comprising:

• a first rotary member and a second rotary member disposed in a manner capable of making relative rotation to each other about a common rotational axis;
• an intermittent member, relative rotation thereof to the first rotary member is restricted, which has a meshing tooth meshing with the second rotary member, and which is configured to move in an axial direction between a coupled position where the meshing tooth meshes with the second rotary member and an uncoupled position where the meshing tooth does not mesh with the second rotary member;
• an actuator that is configured to make the intermittent member move in the axial direction;
• and
• a differential mechanism that is configured to receive drive power from paired output members while permitting differential motion thereof, wherein
• the actuator includes:
• a coil that generates magnetic flux when being energized;
• and
• a plunger that moves with the intermittent member in the axial direction,
• the plunger is disposed in a manner capable of moving relative to one rotary member of the first and second rotary members in the axial direction via first and second air gaps with respect to first and second faces of the one rotary member, and
• when the coil is energized, the magnetic flux communicates to the plunger at the first face of the one rotary member via one air gap of the first and second air gaps, the magnetic flux communicates to the plunger at the second face of the one rotary member via the other air gap, and the plunger moves in the axial direction so as to reduce a size of at least one air gap of the first and second air gaps in a direction perpendicular to the respective first or second face, wherein
• the first air gap is provided between one axial end surface of the one rotary member and an opposing surface of the plunger that opposes the axial end surface in the axial direction, and
• the second air gap is provided between a radially outer peripheral surface of the one rotary member and a radially innermost peripheral surface of the plunger with a specified distance in a radial direction.

An interrupter that interrupts coupling of a first rotary member and a second rotary member disposed in a manner capable of making relative rotation to each other about a common rotational axis, the interrupter comprising:

• an intermittent member, relative rotation thereof to the first rotary member being restricted, which has a meshing tooth meshing with the second rotary member, and which is configured to move in an axial direction between a coupled position where the meshing tooth meshes with the second rotary member and an uncoupled position where the meshing tooth does not mesh with the second rotary member;
• and
• an actuator that is configured to make the intermittent member move in the axial direction, wherein
• the actuator includes:
• a coil that generates magnetic flux when being energized;
• and
• a plunger formed of a magnetic body that moves with the intermittent member in the axial direction,
• the plunger is disposed in a manner capable of moving relative to one rotary member of the first and second rotary members in the axial direction via first and second air gaps with respect to first and second faces of the one rotary member, and
• when the coil is energized, the magnetic flux communicates to the plunger at the first face of the one rotary member via one air gap of the first and second air gaps, the magnetic flux communicates to the plunger at the second face of the one rotary member via the other air gap, and the plunger moves in the axial direction so as to reduce a size of at least one air gap of the first and second air gaps in a direction perpendicular to the respective first or second face, wherein
• the first air gap is provided between one axial end surface of the one rotary member and an opposing surface of the plunger that opposes the axial end surface in the axial direction, and
• the second air gap is provided between a radially outer peripheral surface of the one rotary member and a radially outermost peripheral surface of the plunger with a specified distance in a radial direction.

A differential comprising:

• a first rotary member and a second rotary member disposed in a manner capable of making relative rotation to each other about a common rotational axis;
• an intermittent member, relative rotation thereof to the first rotary member is restricted, which has a meshing tooth meshing with the second rotary member, and which is configured to move in an axial direction between a coupled position where the meshing tooth meshes with the second rotary member and an uncoupled position where the meshing tooth does not mesh with the second rotary member;
• an actuator that is configured to make the intermittent member move in the axial direction;
• and
• a differential mechanism that is configured to receive drive power from paired output members while permitting differential motion thereof, wherein
• the actuator includes:
• a coil that generates magnetic flux when being energized;
• and
• a plunger that moves with the intermittent member in the axial direction,
• the plunger is disposed in a manner capable of moving relative to one rotary member of the first and second rotary members in the axial direction via first and second air gaps with respect to first and second faces of the one rotary member, and
• when the coil is energized, the magnetic flux communicates to the plunger at the first face of the one rotary member via one air gap of the first and second air gaps, the magnetic flux communicates to the plunger at the second face of the one rotary member via the other air gap, and the plunger moves in the axial direction so as to reduce a size of at least one air gap of the first and second air gaps in a direction perpendicular to the respective first or second face, wherein
• the first air gap is provided between one axial end surface of the one rotary member and an opposing surface of the plunger that opposes the axial end surface in the axial direction, and
• the second air gap is provided between a radially outer peripheral surface of the one rotary member and a radially outermost peripheral surface of the plunger with a specified distance in a radial direction.