Patent ID: 9706022
Date: 2017-07-11
CPC Classifications: G06F,H01H,H04M

Claim:
1. An extension key, comprising a shell and a stroke lever, a dome spring, a key body, a vibrating reed and a reset spring which are arranged in the shell, wherein: the shell is provided with a sound output hole and a key surface hole; the dome spring is arranged above a first rotating arm of the stroke lever; the key body is elastically supported by the dome spring and a key surface of the key body stretches out of the key surface hole; and the vibrating reed is arranged above a second rotating arm of the stroke lever; when the key body is pressed, the dome spring may deform instantaneously and stroke the first rotating arm to enable the second rotating arm to stroke the vibrating reed sp as to generate a sound signal; and when the press on the key body is removed, the dome spring jacks the key body to reset, and the reset spring rotates the stroke lever to reset.