Jtekt Corporation

Toyota Jidosha Kabushiki Kaisha

Shun Ohno

Takashi Hosokawa

Akio Matsumoto

Mikiharu Oyabu

Yoshinori Suzuki

Hiroshi Takuno

Yoshihiro Ikushima

Naoki Sawada

Masakatsu Kani

Yasunari Saito

Hirotake Ito

A driving force distributing apparatus is configured to distribute a driving force from an engine to right and left wheels in a manner that the driving force is differentially transmittable to the wheels and the transmission of the driving force is interruptible. The apparatus includes: a differential case; a differential gear mechanism including a pair of side gears and a plurality of pinion gears; an intermediate shaft coupled to one of the side gears such that the intermediate shaft is not rotatable relative to this side gear; and a clutch mechanism to transmit a driving force from the intermediate shaft to one of the wheels in a manner that the transmission of the driving force is interruptible. The clutch mechanism includes: coaxial relatively rotatable first and second rotational members; and a plurality of clutch plates disposed between the rotational members. The first rotational member is spline-fitted to the intermediate shaft.

Driving force distributing apparatus

A driving force transmitting apparatus is provided which enables rotational resistance of rotating members to be suppressed while sufficiently supplying lubricant to a friction clutch. A driving force transmitting apparatus includes a clutch drum having a cylindrical portion, an inner shaft having an end housed in the clutch drum, a friction clutch having outer clutch plates that rotate along with the clutch drum and inner clutch plates that rotate along with the inner shaft, a piston that presses the friction clutch, and a housing in which a first housing chamber housing the friction clutch is formed and in which a storage chamber storing lubricant scooped up by rotation of the clutch drum is also formed. The lubricant stored in the storage chamber returns to the first housing chamber through an inner circulation path leading to inside the clutch drum and an outer circulation path leading to outside the clutch drum.

Driving force transmitting apparatus

Provided is a driving force transmission device that can achieve further reduction in drag torque when it is not in operation and thus is not transmitting a driving force. A driving force transmission device includes: a clutch hub and a clutch drum; inner clutch plates spline-fitted on the clutch hub; outer clutch plates spline-fitted in the clutch drum; and a housing having a second accommodating chamber accommodating the clutch hub and the clutch drum. The inner clutch plates and the outer clutch plates are lubricated by lubricant. The driving force transmission device further includes a fin plate. The fin plate rotates with the clutch hub. By this rotation, the fin plate scoops up the lubricant in the second accommodating chamber to feed the lubricant to a reservoir chamber formed in the housing.

Driving force transmission device

A driving force transmitting apparatus includes a clutch drum having a cylindrical portion, an inner shaft having an end housed in the clutch drum, a friction clutch having outer clutch plates that rotate along with the clutch drum and inner clutch plates that rotate along with the inner shaft, a piston that presses the friction clutch, and a housing in which a first housing chamber housing the friction clutch is formed. The friction clutch is lubricated with a lubricant fed through an opening. The housing is provided with a storage chamber in which the lubricant scooped up by rotation of the clutch drum is stored and a lubricant supply hole which allows the lubricant stored in the storage chamber to be fed from inside the piston to the first housing chamber.

A driving force transmission apparatus includes: a housing having an inner peripheral spline portion; an inner shaft having an outer peripheral spline portion; a main clutch including first outer and inner clutch plates respectively engaged with the inner and outer peripheral spline portions; a cam mechanism generating pressing force for pressing the main clutch by relatively rotating a pair of cam members; and an electromagnetic clutch mechanism including an armature engaged with the inner peripheral spline portion and applying rotation force to the cam mechanism for relatively rotating the cam members through energization of an electromagnetic coil. An end face facing the armature is formed in the inner peripheral spline portion between a first region engaged with the first outer clutch plate and a second region engaged with the armature. Movement of the armature toward the first region is regulated by contact of the armature with the end face.

Growing community of inventors

Anjo, Japan

Shun Ohno