Damper for speaker

Abstract

A damper for a speaker includes a first fiber having a tensile strength of equal to or larger than 17 cN/dtex and a second fiber having a tensile elastic modulus of equal to or smaller than 200 cN/dtex. Thereby, necessary tensile strength and elasticity can be ensured. In addition, the ratio of the first fiber to the total amount of the first and second fibers is from 10% to 90%. If the ratio of the first fiber is smaller than 10%, the necessary tensile strength and elasticity cannot be obtained. Meanwhile, if the ratio of the first fiber becomes larger than 90%, punching property at the time of damper manufacture deteriorates. Thus, it is preferred that the first fiber is included at the above ratio.

1 . A damper for a speaker comprising: 
 first fiber having a tensile strength of equal to or larger than 17 cN/dtex; and    second fiber having a tensile elastic modulus of equal to or smaller than 200 cN/dtex.    
   
   
       2 . The damper for the speaker according to  claim 1 , wherein a ratio of the first fiber to a total amount of the first and second fibers is from 10% to 90%.  
   
   
       3 . The damper for the speaker according to  claim 1 , wherein the first fiber is one of a para-type aromatic polyamide fiber, an aromatic polyester fiber, a polyimide fiber, a high tensile strength polyethylene fiber and a polypara phenylene benzobis imidazole fiber.  
   
   
       4 . The damper for the speaker according to  claim 1 , wherein the second fiber is one of a meta-type aromatic polyamide fiber, a polyester fiber, an acrylic fiber, a polyhenylenesulfide fiber, a polyamide fiber and a cotton fiber.