Bat having reduced weight and improved batting effect

Abstract

A bat of the invention includes a handle portion, a connecting portion, and a hitting portion. The handle portion and the connecting portion are both made of fiber composite material. The connecting portion has a small radius end connected with the handle portion, and a large radius end having a first slope section. The hitting portion has a fiber composite material layer and a metal layer. The fiber composite material layer has an end wall, and a peripheral wall connected with the end wall and having a second slope section. Two ends of the metal layer respectively have third and fourth slope sections which are respectively connected with the first slope section of the connecting portion and the second slope section of the fiber composite material layer. As a result, the bat of the invention is reduced in weight and effectively improved in batting effect.

1 . A bat comprising:
 a handle portion made of fiber composite material;   a connecting portion made of fiber composite material and having a small radius end and a large radius end, the small radius end of the connecting portion being connected with the handle portion integrally, the large radius end of the connecting portion having a first slope section; and   a hitting portion having a fiber composite material layer and a metal layer, the fiber composite material layer having an end wall and a peripheral wall, an end of the peripheral wall being connected with the end wall integrally, another end of the peripheral wall having a second slope section, two ends of the metal layer having a third slope section and a fourth slope section respectively, the third slope section of the metal layer being connected with the first slope section of the large radius end of the connecting portion, the fourth slope section of the metal layer being connected with the second slope section of the peripheral wall of the fiber composite material layer,   wherein L is defined as a length of the hitting portion; D is defined as a longest distance between the third slope section of the metal layer and the fourth slope section of the metal layer; L and D satisfy an equation: L>D≥L/2, and   wherein the peripheral wall of the fiber composite material layer further has a straight section; an end of the straight section is connected with the end wall integrally; the second slope section is extended from another end of the straight section integrally; the metal layer further has a cladding section extended from the fourth slope section integrally and provided on an outer peripheral surface of the straight section of the peripheral wall.   
     
     
         2 . (canceled) 
     
     
         3 . (canceled) 
     
     
         4 . The bat as claimed in  claim 1 , wherein T 1  is defined as a thickness of the straight section of the peripheral wall; the metal layer further has a supporting section; the third and fourth slope sections are integrally extended from two ends of the supporting section respectively; T 2  is defined as a thickness of the supporting section of the metal layer; T 3  is defined as a thickness of the cladding section of the metal layer; T 1 , T 2  and T 3  satisfy an equation: T 2 >T 1 +T 3 . 
     
     
         5 . The bat as claimed in  claim 1 , wherein a length of the cladding section of the metal layer is at least equal to half a length of the straight section of the peripheral wall. 
     
     
         6 . The bat as claimed in  claim 5 , wherein T 1  is defined as a thickness of the straight section of the peripheral wall; the metal layer further has a supporting section; the third and fourth slope sections are integrally extended from two ends of the supporting section respectively; T 2  is defined as a thickness of the supporting section of the metal layer; T 3  is defined as a thickness of the cladding section of the metal layer; T 1 , T 2  and T 3  satisfy an equation: T 2 >T 1 +T 3 . 
     
     
         7 . The bat as claimed in  claim 1 , wherein the peripheral wall of the fiber composite material layer further has a straight section; an end of the straight section is connected with the end wall integrally; the second slope section is extended from another end of the straight section integrally; the metal layer further has a cladding section extended from the fourth slope section integrally and provided on an outer peripheral surface of the straight section of the peripheral wall. 
     
     
         8 . The bat as claimed in  claim 7 , wherein T 1  is defined as a thickness of the straight section of the peripheral wall; the metal layer further has a supporting section; the third and fourth slope sections are integrally extended from two ends of the supporting section respectively; T 2  is defined as a thickness of the supporting section of the metal layer; T 3  is defined as a thickness of the cladding section of the metal layer; T 1 , T 2  and T 3  satisfy an equation: T 2 >T 1 +T 3 . 
     
     
         9 . The bat as claimed in  claim 7 , wherein a length of the cladding section of the metal layer is at least equal to half a length of the straight section of the peripheral wall. 
     
     
         10 . The bat as claimed in  claim 9 , wherein T 1  is defined as a thickness of the straight section of the peripheral wall; the metal layer further has a supporting section; the third and fourth slope sections are integrally extended from two ends of the supporting section respectively; T 2  is defined as a thickness of the supporting section of the metal layer; T 3  is defined as a thickness of the cladding section of the metal layer; T 1 , T 2  and T 3  satisfy an equation: T 2 >T 1 +T 3 .