展示ゾーン:源=みなもと

職人の手が実現する、究極の手触り

自動車用ステアリング(LEXUS GS用)

株式会社ミロクテクノウッド/株式会社東海理化電機製作所/高知県工業技術センター

竹の芯の部分だけを厚さ4mm の短冊状に加工し、温度や湿度の変化を受けないように処理したあと、11枚を重ね合わせて半円形に曲げます。その後、手作業で磨き、塗装します。運転中、常に人の手が触れる場所だからこそ、手間をかけた徹底的なこだわりがあります。日本の伝統的な素材である竹をよく知る職人の手だからこそ、究極の手触りが実現するのです。竹の生長は1日あたり約1m。通常、ハンドルに使用する木材では50~60年かかるのに比べて10倍以上も早いため、「サスティナブルな素材」として注目が集まっています。それをステアリングの部材として使う技術も、日本が極めた技のひとつです。


Steering Wheel (for LEXUS GS)

Exhibition cooperation: MIROKU TECHNO WOOD Co., Ltd., TOKAI RIKA CO., LTD., Kochi Prefectural Industrial Technology Center

The core part of the bamboo is cut into strips with thickness of 4mm, and processed to protect it from changes in temperature or humidity. Next, 11 sticks are put together and bent to form a semicircular shape. The product is then polished and painted by hand. Since it is the section of the car that is constantly touched by a driver’s hands, much work is put into ensuring thorough commitment to quality. The steering wheel boasts the finest feel and touch that could only be produced by artisans who have in-depth knowledge about bamboo, a material traditionally used in Japan. Bamboo grows by about 1m per day. As this growth rate is more than 10 times faster than the growth rate of the wood that is typically used to make a steering wheel (about 50 to 60 years), bamboo has been drawing much attention as a sustainable material. The technology involved in using bamboo as a component of Steering is also one of the skills that Japan has refined and mastered.