A differential mechanism includes a case, a gear rotatable about an axis, a lock ring held against rotation relative to the case, a lever contacting the lock ring, and an electromagnetic coil that is displaced axially when energized, pivoting the lever, engaging the lock ring with the side gear, and
A differential mechanism includes a case, a gear rotatable about an axis, a lock ring held against rotation relative to the case, a lever contacting the lock ring, and an electromagnetic coil that is displaced axially when energized, pivoting the lever, engaging the lock ring with the side gear, and preventing the gear from rotating relative to the case.
대표청구항▼
1. A differential, comprising: an end cap secured to a case;a rotatable gear;a lock ring held against rotation relative to the case;a lever contacting the lock ring;an electromagnetic coil displaceable when energized to pivot the lever, engage the lock ring with the gear and prevent rotation of the
1. A differential, comprising: an end cap secured to a case;a rotatable gear;a lock ring held against rotation relative to the case;a lever contacting the lock ring;an electromagnetic coil displaceable when energized to pivot the lever, engage the lock ring with the gear and prevent rotation of the gear relative to the case;a ball retained on the end cap, displaceable toward the lever by the coil when energized. 2. The differential of claim 1, wherein: the lever includes a pivot axis and the lever contacts the lock ring at a first distance from the pivot axis; andthe ball contacting the lever at a second distance from the pivot axis, the second distance being less than the first distance. 3. The differential of claim 1, wherein: the lever is secured to the end cap at a pivot axis, the lever includes a first surface contacting the lock ring at a first distance from the pivot axis, and a second surface facing away from the lock ring; andthe ball contacting the second surface at a second distance from the pivot axis, the second distance being less than the first distance. 4. The differential of claim 1, wherein: the lever is secured to the case and includes a pivot axis, a first surface contacting the lock ring at a first distance from the pivot axis, and a second surface facing away from the lock ring; andthe ball contacting the second surface at a second distance from the pivot axis, the second distance being less than the first distance. 5. The differential of claim 1, wherein the coil is spaced from the end cap by an air gap, whose width decreases when the coil is energized. 6. The differential of claim 1, wherein: the end cap secured to the case and formed with a web that includes an inboard side and an outboard side, the lever and lock ring being located on the inboard side, the coil located on the outboard side. 7. The differential of claim 1, further comprising: a web that includes an inboard side and an outboard side, the lever and lock ring being located on the inboard side, the coil located on the outboard side. 8. A differential, comprising: a rotatable gear;a lock ring held against rotation;a lever contacting the lock ring;an electromagnetic coil displaceable when energized to pivot the lever, engage the lock ring with a side gear and prevent the side gear from rotating relative to the lock ring;a ball spaced radially from an axis, retained in position on an end cap, contacting the lever, and displaceable toward the lever by the coil when energized. 9. The differential of claim 8, wherein: the lever includes a pivot axis and the lever contacts the lock ring at a first distance from the pivot axis; andthe ball contacting the lever at a second distance from the pivot axis, the second distance being less than the first distance. 10. The differential of claim 8, wherein: the lever is secured to the end cap at a pivot axis, including a first surface contacting the lock ring at a first distance from the pivot axis, and a second surface facing away from the lock ring; andthe ball contacting the second surface at a second distance from the pivot axis, the second distance being less than the first distance. 11. The differential of claim 8, wherein: the lever includes a pivot axis, a first surface contacting the lock ring at a first distance from the pivot axis, and a second surface facing away from the lock ring; andthe ball contacting the second surface at a second distance from the pivot axis, the second distance being less than the first distance. 12. The differential of claim 8, further comprising: a web that includes an inboard side and an outboard side, the lever and lock ring being located on the inboard side, the coil located on the outboard side. 13. A method for locking a differential, comprising: supporting a gear for rotation;holding a lock ring against rotation;placing a lever in contact with the lock ring;displacing an electromagnetic coil by energizing the electromagnetic coil causing the lever to pivot;engaging the lock ring with a side gear;preventing the side gear from rotating relative to the lock ring;supporting the lever at a pivot axis such that the lever contacts the lock ring at a first distance from the pivot axis; andplacing a ball contacting the lever at a second distance from the pivot axis, the second distance being less than the first distance. 14. A differential, comprising: a rotatable gear;a lock ring held against rotation;a lever including a pivot axis;a ball;an electromagnetic coil, the lever contacting the lock ring at a first point spaced a first distance from the pivot axis when the coil is deenergized, the ball contacting the lever at a second point spaced from the pivot axis a second distance greater than the first distance when the coil is deenergized. 15. The differential of claim 14, wherein: the coil is displaced when energized forcing the ball to pivot the lever and move a point of contact between the lever and the lock ring away from the pivot axis, such that said point of contact becomes spaced from the pivot axis a distance greater than the second distance. 16. The differential of claim 14, wherein: displacement of the coil when energized pivots the lever, engages the lock ring with the gear and prevents the gear from rotating; anda surface of one of the lever and the lock ring is formed with a cam profile in a location between the first point and a location of the point of contact when engagement of the lock ring with the gear prevents the gear from rotating. 17. The differential of claim 14, wherein a force applied to the lock ring by the lever is greater than a force applied to the lever by the ball. 18. The differential of claim 14, wherein axial displacement of the lock ring is greater than axial displacement of the coil due to energizing the coil.
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이 특허에 인용된 특허 (15)
Binkley Carl R. (Marshall MI), Anti-spin differential.
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