Wrist strap for an electronic device

Abstract

A wrist strap includes a fixing strap and a surrounding strap. The fixing strap includes a fixing end and a movable end. The fixing strap defines a recess between the fixing end and the movable end. The recess defines a receiving hole penetrating the fixing strap and two grooves at two opposite sides of the receiving hole. The surrounding strap includes a first end and a second end. The surrounding strap includes a protrusion between the first end and the second end. The protrusion includes two fixing portions toward the surrounding strap. The protrusion extends through the receiving hole of the fixing strap. The fixing strap and the surrounding strap rotate relative turn to each other to make the two fixing portions lock in the two grooves.

What is claimed is: 
     
         1 . A wrist strap comprising:
 a fixing strap comprising a fixing end and a movable end opposite to the fixing end, wherein the fixing strap defines a recess between the fixing end and the movable end, the recess defines a receiving hole and two positioning holes; and   a surrounding strap comprising a first end, and a second end opposite to the first end, wherein the surrounding strap forms a protrusion between the first end and the second end, the protrusion comprises two fixing portions toward the surrounding strap;   wherein the fixing end of the fixing strap can be locked at the movable end by bending the fixing strap, the first end of the surrounding strap can be locked at the second end by bending the surrounding strap, the protrusion extends through the receiving hole of the fixing strap, the fixing strap and the surrounding strap rotate relative to each other to make the two fixing portions be locked in the two positioning holes.   
     
     
         2 . The wrist strap of  claim 1 , wherein the fixing strap is elongated, and comprises a first side and a second side opposite to the first side, a plurality of columns extends from the first side at the fixing end, the movable end defines a plurality of fixing holes. 
     
     
         3 . The wrist strap of  claim 2 , wherein a number of the fixing holes in the lengthwise direction of the fixing strap is greater than a number of the columns in the lengthwise direction of the fixing strap. 
     
     
         4 . The wrist strap of  claim 3 , wherein the columns are arranged in a plurality lines spaced in the lengthwise direction of the fixing strap, the fixing holes are arranged in plurality lines spaced in the lengthwise direction of fixing strap, a number of the lines of the fixing holes is greater than a number of the lines of the columns. 
     
     
         5 . The wrist strap of  claim 1 , wherein the surrounding strap comprises a first side and a second side, a plurality of columns extends from the first side at the first end, the second end defines a plurality of fixing holes. 
     
     
         6 . The wrist strap of  claim 5 , wherein the surrounding strap is elongated, the columns and the fixing holes are arranged along the lengthwise direction of the surrounding strap, and a number of the fixing holes is greater than a number of the columns. 
     
     
         7 . The wrist strap of  claim 5 , wherein the wrist strap further comprising a lock member to fix the first end and the second end of the surrounding strap together. 
     
     
         8 . The wrist strap of  claim 7 , wherein the lock member can be made of thermoplastic polyurethane. 
     
     
         9 . The wrist strap of  claim 1 , wherein the recess defines a pair of rotary grooves around the receiving hole, and each positioning hole is located at a middle of the corresponding rotary groove. 
     
     
         10 . The wrist strap of  claim 1 , wherein the receiving hole comprises a round hole and two square holes communicating with two opposite sides of the round hole, the protrusion comprises a protruding portion and extending through the round hole, and the two opposite fixing pieces coupled to the protruding portion for extending through the square holes, the fixing portions extend from the fixing pieces. 
     
     
         11 . The wrist strap of  claim 1 , wherein the surrounding strap defines a plurality of grooves respectively adjacent to two opposite sides of the protrusion. 
     
     
         12 . The wrist strap of  claim 1 , wherein the fixing strap can be made of transparent thermoplastic polyurethane or thermoplastic elastomer, the surrounding strap can be made of thermoplastic polyurethane or silica gel. 
     
     
         13 . The wrist strap of  claim 1 , wherein the first end and the second end of the surrounding strap, and the fixing end and movable end of the fixing strap are Velcro. 
     
     
         14 . A wrist strap comprising:
 a fixing strap comprising:
 a fixing end; and 
 a movable end opposite to the fixing end, 
 wherein the fixing strap defines a recess between the fixing end and the movable end, the recess defines a receiving hole and two positioning holes; and 
   a surrounding strap comprising:
 a first end; and 
 a second end opposite to the first end, 
 wherein the surrounding strap forms a protrusion between the first end and the second end, the protrusion comprising two fixing portions toward the surrounding strap; 
 wherein the fixing end of the fixing strap can be locked at the movable end by bending the fixing strap, the first end of the surrounding strap can be locked at the second end by bending the surrounding strap, the protrusion extends through the receiving hole of the fixing strap, and the fixing strap and the surrounding strap rotate relative to each other to make the two fixing portions to lock in the two positioning holes.