Cap and band holder thereof

Abstract

A band holder is provided. The band holder includes: a holding unit having a holding unit body; a rotating unit including an arm pivotally connected to the holding unit body and a fixed hanging portion disposed at the arm pivotal end, wherein the rotating unit is rotated and fixed in place relative to the holding unit; and a spacing adjustment mechanism disposed at the arm and having a movable hanging portion, the movable hanging portion undergoing linear displacement in a lengthwise direction of the arm and being positioned, so as to adjust its distance from the fixed hanging portion. Therefore, not only is a mask comfortable to wear, but the human head and ear also perceive no sense of compression.

1 . A band holder, comprising:
 a holding unit having a holding unit body;   a rotating unit comprising an arm pivotally connected to the holding unit body and a fixed hanging portion disposed at the arm pivotal end, wherein the rotating unit is rotated and fixed in place relative to the holding unit; and   a spacing adjustment mechanism disposed at the arm and having a movable hanging portion, the movable hanging portion undergoing linear displacement in a lengthwise direction of the arm and being positioned, so as to adjust its distance from the fixed hanging portion.   
     
     
         2 . The band holder of  claim 1 , wherein the holding unit further has an axle portion connected to the holding unit body, and the arm has a pivotal hole portion which the axle portion is pivotally connected to. 
     
     
         3 . The band holder of  claim 2 , wherein the holding unit further has a positioning post connected to an end of the holding unit body, and the arm has a positioning channel which the positioning post is fixed to. 
     
     
         4 . The band holder of  claim 3 , wherein an end surface of the positioning post has a dented hole, and the positioning channel has therein a raised portion to be positioned in the dented hole. 
     
     
         5 . The band holder of  claim 4 , wherein the rotating unit further comprises a tightening mechanism which the fixed hanging portion is disposed on. 
     
     
         6 . The band holder of  claim 5 , wherein the arm has a slot, and the spacing adjustment mechanism further has a sliding block disposed in the slot. 
     
     
         7 . The band holder of  claim 6 , wherein the holding unit further has an upright element extending upward from a side of the holding unit body and having a rib and a cord holding portion disposed on a surface of the rib. 
     
     
         8 . The band holder of  claim 7 , wherein the holding unit further has an earpiece holder removably fitted to the upright element. 
     
     
         9 . A cap, comprising:
 a cap body having at least two openings; and   the band holder of  claim 6 , wherein the axle portion and the positioning post are penetratingly disposed in and fixed into the two openings, respectively.   
     
     
         10 . A cap, comprising:
 a cap body having a cap body coupling portion; and   the band holder of  claim 8 , wherein the holding unit has a holding unit body coupling portion which the cap body coupling portion is fixed to.