Key structure

A key structure, comprising:

• a casing, wherein the casing has an opening;
• a covering member, wherein the opening of the casing is covered by the covering member;
• a pressing element disposed within the opening of the casing and connected with the covering member, wherein the pressing element includes a middle part and an extension part;
• a triggering post installed on the middle part of the pressing element, wherein the triggering post is protruded from the middle part of the pressing element and extended in a direction toward an inner position of the casing;
• and
• a switch element disposed within the casing and located under the triggering post,
• wherein when an external force is applied to the middle part of the pressing element, the triggering post is moved toward the switch element to push the switch element, wherein when the external force is applied to the extension part of the pressing element, the triggering post is correspondingly moved with the pressing element in an inclined manner so as to push the switch element,
• wherein the key structure further comprises an elastic arm, the elastic arm is connected with the triggering post and the elastic arm is aligned with the extension part of the pressing element, the elastic arm comprises a resilience part and a fixing part, the resilience part is connected with the triggering post, the resilience part of the elastic arm is in parallel with the extension part of the pressing element, and the fixing part is connected with the casing, the elastic arm has an S-shaped structure.