Limited slip differential device
First Claim
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1. A limited slip differential device comprising:
- differential gears to obtain a differential function;
a clutch to limit the differential function of said differential gears;
a electromagnetic solenoid that has a plunger moving forward to engage said clutch in a differential limit state and moving backward to disengage said clutch in a differential limitless state, and a coil applying electromagnetic force to said plunger when the coil is energized in the differential limit state, and said plunger being pressed by a return spring so that said clutch is disengaged; and
a contacting member to which said plunger is contactable in at least one state of the differential limit state and the differential limitless state, wherein a contact area between said plunger and said contacting member is set smaller than a facing area between said plunger and said contacting member in at least the one state of the differential limit state and the differential limitless state.
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Abstract
A limited slip differential device has differential gears, a clutch to limit the differential function of the differential gears, and a electromagnetic solenoid including a plunger and a coil. The plunger is set to move forward to engage the clutch by electromagnetic force of the coil in a differential limit state and move backward by a return spring to disengage said clutch in a differential limitless state. The plunger contacts with a contacting member in at least one state of the differential limit state and the differential limitless state, and their contact area is set smaller than a facing area between them in at least the one state.
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Citations
18 Claims
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1. A limited slip differential device comprising:
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differential gears to obtain a differential function;
a clutch to limit the differential function of said differential gears;
a electromagnetic solenoid that has a plunger moving forward to engage said clutch in a differential limit state and moving backward to disengage said clutch in a differential limitless state, and a coil applying electromagnetic force to said plunger when the coil is energized in the differential limit state, and said plunger being pressed by a return spring so that said clutch is disengaged; and
a contacting member to which said plunger is contactable in at least one state of the differential limit state and the differential limitless state, wherein a contact area between said plunger and said contacting member is set smaller than a facing area between said plunger and said contacting member in at least the one state of the differential limit state and the differential limitless state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification
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Current AssigneeGKN Driveline Torque Technology K.K. (Melrose Industries Plc), Nissan Motor Co., Ltd.
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Original AssigneeNissan Motor Co., Ltd.
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InventorsHaruki, Yuya
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current475/231
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CPC Class CodesF16H 2048/204 Control of arrangements for...F16H 2048/346 using a linear motorF16H 48/08 comprising bevel gearsF16H 48/24 using positive clutches or ...F16H 48/30 using externally-actuatable...F16H 48/34 using electromagnetic or el...F16H 48/40 characterised by features o...
