| 摘要 |
PURPOSE:To easily attach and detach a key return spring and confirm its assembly state. CONSTITUTION:An opening 1c is formed on the surface of the blind part 1B of a key 1, a slanting surface part 1e and a spring engagement part 1f connected it are formed on a spring reception wall 1d formed in the key, and the strip- shaped key return spring is slantingly inserted into the opening 1c and suspended between the spring support part 2b of a main frame 2 and the slanting surface part 1e of the key 1. When the spring is depressed back nearby its rear end by using a tool 15 in this state, the rear end slides on the slanting surface 1e toward the key tip to curve like a bow and then engaged with the spring engagement part 1f. |
