Yutaka Ohasi

Title: Yutaka Ohasi: Innovator in Seat Belt Technology

Introduction

Yutaka Ohasi is a notable inventor based in Handa, Japan, recognized for his contributions to automotive safety technology. With a total of four patents to his name, he has made significant advancements in seat belt mechanisms that enhance passenger safety during vehicular accidents.

Latest Patents

One of Ohasi's latest patents is a seat belt tensioner. This innovative device includes a wire, a spring retainer connected to a seat belt buckle, and a casing that allows the spring retainer to move linearly. The design features a primary coil spring that contacts the spring retainer, a leaf spring to limit its movement, and a secondary coil spring. A mass body is supported relative to the spring retainer, which moves against the secondary coil spring when a predetermined deceleration occurs. This mechanism ensures that the primary coil spring is released, effectively tightening the seat belt during an impact.

Another significant patent is the seat belt tightening device. This device includes an arresting hook plate that extends from a seatbelt buckle and is attached to a buckle plate, allowing it to move freely. When inertia force acts on the mass body within the pull-in section casing, it transitions from a locked state due to spring biasing force. The arresting hook plate, connected to the mass body by a wire, is pulled in along with the mass body’s movement. The design incorporates a pair of locking pawls on the buckle plate that prevent the arresting hook plate from moving in the pull-out direction when locked. The locking pawl holder allows for the selection and setting of the locking or release of the locking pawls.

Career Highlights

Yutaka Ohasi has dedicated his career to improving automotive safety through innovative designs. His work at Nippondenso Co., Ltd. has positioned him as a key figure in the development of advanced seat belt technologies. His patents reflect a deep understanding of mechanical engineering and a commitment to enhancing passenger safety.

Collaborations

Throughout his career, Ohasi has collaborated with talented individuals such as Mutsumasa Koujiya and Kazuyoshi Isaji. These collaborations have contributed to the successful development and implementation of his innovative designs.

Conclusion

Yutaka Ohasi's contributions to seat belt technology exemplify his dedication to automotive safety. His innovative patents have the potential to