Yoshihiko Hagino

Title: Innovations by Yoshihiko Hagino

Introduction

Yoshihiko Hagino is a prominent inventor based in Inuyama, Japan. He has made significant contributions to the field of engineering, particularly in the development of advanced damping devices and engine mounts. With a total of 8 patents to his name, his work has had a considerable impact on automotive technology.

Latest Patents

Hagino's latest patents include a damping actuator and an active vibration damping device equipped with the actuator. The damping actuator features an inner shaft member and an outer sleeve member that are coaxially aligned with a radial gap between them. This design allows for relative movement, with a coil and inner yoke mounted to the inner shaft member to create inner magnetic pole portions. The outer sleeve member houses a permanent magnet and outer yoke, forming outer magnetic pole portions that interact with the inner magnetic poles to generate a magnetic axial driving force.

Another notable patent is the fluid-filled active elastic engine mount. This innovative design includes an elastic body that connects two mounting members and defines a pressure-receiving chamber filled with a non-compressible fluid. The mount features a flexible diaphragm and a movable oscillating plate, which work together to control fluid pressure and mitigate engine vibrations. The orifice passages in the mount are tuned to address both low-frequency engine shake and medium-frequency idling vibrations, enhancing overall performance.

Career Highlights

Hagino is currently employed at Tokai Rubber Industries, Ltd., where he continues to innovate and develop new technologies. His work has been instrumental in advancing the capabilities of damping systems and engine mounts, contributing to improved vehicle performance and comfort.

Collaborations

Throughout his career, Hagino has collaborated with notable colleagues, including Atsushi Muramatsu and Katsuhiro Goto. These partnerships have fostered a creative environment that encourages the exchange of ideas and the development of cutting-edge technologies.

Conclusion

Yoshihiko Hagino's contributions to the field of engineering through his patents and innovations have significantly advanced automotive technology. His work continues to influence the industry, showcasing the importance of innovation in enhancing vehicle performance and safety.