Four-wheel vehicle drive system

Patent · Tue Jul 07 04:00:00 EDT 1987

OSTI ID:6041530

Yoshinaka, T; Nagano, S

A four-wheel drive system is described for use in a vehicle including first and second paris of road wheels, an engine including an output shaft, and a transmission including input and output shafts, the input shaft of the transmission selectively connected to the output shaft of the engine. The output shaft of the transmission selectively is in driving engagement with the input shaft of the transmission, the four-wheel drive system comprising: a first spline member being rotatable about a first rotational axis, the first spline member being driven by the output shaft of the transmission, the first spline member having a first engagement means and a first part of a disengagement preventing means; a second spline member being rotatable about the first rotational axis of the first spline member, the second spline member being located next to the first spline member, the second spline member having a second engagement means; an engagement sleeve member being slidably mounted on the second spline member, the engagement sleeve member having a third engagement means and a second part of the disengagement preventing means, the third engagement means of the engagement sleeve member engaging with the second engagement means of the second spline member. A shaft member is located parallel to the first rotational axis of the first spline member, the shaft member is selectively positioned at one of a first position and a second position. A locking member biased toward the shaft member; and a fork member is secured to the shaft member, the fork member is having an engagement finger.

• Assignee: Toyota Jidosha Kabushiki Kaisha, Aichi
• Patent Number(s): US 4678055
• OSTI ID: 6041530
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
DESIGN
ENGINES
FASTENERS
MACHINE PARTS
MECHANICAL TRANSMISSIONS
MOTION
OPERATION
ROTATION
SHAFTS
VEHICLES
WHEELS