DIFFERENTIAL DEVICE WITH LIMITED-SLIP DIFFERENTIAL MECHANISM

摘要

The present invention is intended to provide a differential device with a limited-slip differential mechanism in which, while preventing full compression of spring members to avoid problems resulting from it, the spring members are configured to be as small in diameter as possible to allow the pressure-contact surfaces of a differential case to be wide for clutch plates, whereby it is possible to prevent problems such as a local increase in surface pressure between the clutch plates and scratches on the clutch plates caused by the inner peripheral edges of the pressure-contact surfaces, and achieve improvement in durability of the differential device.;Pressure-contact surfaces 36 capable of pressure-contact with a clutch means 30 are provided in a differential case 11 on outer peripheral sides of surfaces axially opposed to the clutch means 30, downward stairs 37 with a larger height than height of spring members 35 in a fully-compressed state are provided at inner peripheral edges of the pressure-contact surfaces 36, annular spring storage parts 38 for storing the spring members 35 are provided in the differential case 11 on inner peripheral sides of the pressure-contact surfaces 36 across the stairs 37, and the inner peripheral edges of the spring members 35 are arranged on radially inner sides than inner peripheral edges of inner pawl discs 31 constituting the clutch means 30.

主权项

1. A differential device with a limited-slip differential mechanism, comprising:
a differential case that rotates by a driving force from an engine; a differential means that distributes the rotation of the differential case to right and left axles; a clutch means that is capable of limiting a differential in the differential means; an annular spring member that applies a pre-pressure to the clutch means; and a differential-limiting operation means that presses and operates the clutch means in an axial direction, wherein a pressure-contact surface capable of pressure-contact with the clutch means is provided in the differential case on an outer peripheral side of a surface axially opposed to the clutch means, a downward stair with a larger height than height of the spring member in a fully-compressed state is provided at an inner peripheral edge of the pressure-contact surface, an annular spring storage part for storing the spring member is provided in the differential case on an inner peripheral side of the pressure-contact surface across the stair, and the inner peripheral edge of the spring member is arranged on a radially inner side than inner peripheral edges of a plurality of clutch plates constituting the clutch means.