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Left or Right / Keyhole-angle 30 °

Left or Right
Left or Right

When we open the door, we always forget which side should twist the key, which would cause damage to keys and Keyhole. So we provide a solution, the keyhole is no longer perpendicular to the ground, but form an angle of 30 degrees. So, when you put the key in, you will subconsciously turn the key to the right side, so that we can ensure the riht derection when you open the door.

University

Jiangnan University

Jiangnan University
Wuxi, China

Xingyu Tian,
Jiangnan University