POWER TRANSMISSION DEVICE FOR A VEHICLE
First Claim
1. A power transmission device for a vehicle comprising:
- a first rotating member;
a second rotating member configured to rotate relative to the first rotating member; and
a torque transmission portion provided on the first rotating member and configured to transmit torque from one of the first rotating member and the second rotating member to the other of the first rotating member and the second rotating member via a hydraulic fluid,the torque transmission portion including an oil chamber portion filled with the hydraulic fluid, a first piston configured to press the second rotating member, a second piston configured to retain the hydraulic fluid in the oil chamber portion with the first piston, and an elastic portion configured to elastically hold the second piston, andthe first piston further configured to receive pressure of the hydraulic fluid on a first pressure receiving area, and the second piston further configured to receive pressure of the hydraulic fluid on a second pressure receiving area, with the first pressure receiving area being smaller than the second pressure receiving area.
1 Assignment
0 Petitions
Accused Products
Abstract
A power transmission device is disclosed. The device includes a first rotating member, a second rotating member rotating relative to the first rotating member, and a torque transmission portion. The torque transmission portion is provided on the first rotating member and transmits torque from one of the first and second rotating members to the other via a hydraulic fluid. The torque transmission portion includes an oil chamber portion filled with the hydraulic fluid, a first piston pressing the second rotating member, a second piston retaining the hydraulic fluid in the oil chamber portion with the first piston, and an elastic portion elastically holding the second piston. The first piston receives pressure of the hydraulic fluid on a first pressure receiving area. The second piston receives pressure of the hydraulic fluid on a second pressure receiving area. The first pressure receiving area is smaller than the second pressure receiving area.
0 Citations
7 Claims
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1. A power transmission device for a vehicle comprising:
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a first rotating member; a second rotating member configured to rotate relative to the first rotating member; and a torque transmission portion provided on the first rotating member and configured to transmit torque from one of the first rotating member and the second rotating member to the other of the first rotating member and the second rotating member via a hydraulic fluid, the torque transmission portion including an oil chamber portion filled with the hydraulic fluid, a first piston configured to press the second rotating member, a second piston configured to retain the hydraulic fluid in the oil chamber portion with the first piston, and an elastic portion configured to elastically hold the second piston, and the first piston further configured to receive pressure of the hydraulic fluid on a first pressure receiving area, and the second piston further configured to receive pressure of the hydraulic fluid on a second pressure receiving area, with the first pressure receiving area being smaller than the second pressure receiving area. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification