Key assembly and keyboard including the same

Abstract

A key assembly including a base plate, a keycap, an elastic member, and a link member is provided. The base plate includes a body and a hook portion, the hook portion including a hole. The keycap is disposed on the base plate. The elastic member is disposed between the base plate and the keycap. The link member includes a connecting portion, a rod portion, and an end portion, the rod portion being assembled to the keycap, the connecting portion being connected between the rod portion and the end portion, and the end portion penetrating the hole, wherein an included angle between the end portion and the connecting portion is an obtuse angle.

What is claimed is: 
     
         1 . A key assembly, comprising:
 a base plate comprising a body and a hook portion, the hook portion comprising a hole;   a keycap disposed on the base plate;   an elastic member disposed between the base plate and the keycap; and   a link member comprising a connecting portion, a rod portion, and an end portion, the rod portion being assembled to the keycap, the connecting portion being connected between the rod portion and the end portion, and the end portion penetrating the hole, wherein an included angle between the end portion and the connecting portion is an obtuse angle.   
     
     
         2 . The key assembly according to  claim 1 , wherein the obtuse angle is greater than 90 degrees and less than or equal to 150 degrees. 
     
     
         3 . The key assembly according to  claim 1 , further comprising: a membrane disposed between the base plate and the keycap, wherein the elastic member is disposed on the membrane. 
     
     
         4 . The key assembly according to  claim 3 , wherein the membrane is a membrane circuit board. 
     
     
         5 . The key assembly according to  claim 1 , wherein the base plate comprises a projection area corresponding to the end portion, the membrane comprises an opening, and the projection area and the opening at least partially overlap. 
     
     
         6 . The key assembly according to  claim 5 , wherein a second end of the end portion relatively far away from the connecting portion abuts against the projection area, and a first end of the end portion connected to the connecting portion separated from the projection area by a distance in a vertical direction when the key assembly is not pressed. 
     
     
         7 . The key assembly according to  claim 1 , wherein a size of the hole is 120% to 150% of a diameter of the end portion. 
     
     
         8 . The key assembly according to  claim 3 , wherein the hook portion is a metal member integrally formed with the body. 
     
     
         9 . The key assembly according to  claim 1 , wherein the hook portion is a plastic member and is formed on the body by insert molding. 
     
     
         10 . A keyboard, comprising:
 a key assembly, comprising:
 a base plate comprising a body and a hook portion, the hook portion comprising a hole; 
 a keycap disposed on the base plate; 
 an elastic member disposed between the base plate and the keycap; and 
 a link member comprising a connecting portion, a rod portion, and an end portion, the rod portion being assembled to the keycap, the connecting portion being connected between the rod portion and the end portion, and the end portion penetrating the hole, wherein an included angle between the end portion and the connecting portion is an obtuse angle. 
   
     
     
         11 . The keyboard according to  claim 10 , wherein the obtuse angle is greater than 90 degrees and less than or equal to 150 degrees. 
     
     
         12 . The keyboard according to  claim 10 , further comprising: a membrane disposed between the base plate and the keycap, wherein the elastic member is disposed on the membrane. 
     
     
         13 . The keyboard according to  claim 12 , wherein the membrane is a membrane circuit board. 
     
     
         14 . The keyboard according to  claim 10 , wherein the base plate comprises a projection area corresponding to the end portion, the membrane comprises an opening, and the projection area and the opening at least partially overlap. 
     
     
         15 . The keyboard according to  claim 14 , wherein a second end of the end portion relatively far away from the connecting portion abuts against the projection area, and a first end of the end portion connected to the connecting portion separated from the projection area by a distance in a vertical direction when the key assembly is not pressed. 
     
     
         16 . The keyboard according to  claim 10 , wherein a size of the hole is 120% to 150% of a diameter of the end portion. 
     
     
         17 . The keyboard according to  claim 12 , wherein the hook portion is a metal member integrally formed with the body. 
     
     
         18 . The keyboard according to  claim 10 , wherein the hook portion is a plastic member and is formed on the body by insert molding.