Patent ID: 6293886
Filing Date: 2001-09-25
Classification: F16G

Abstract:
A heavy-duty power transmission V-belt comprising:two tension members each including a large number of upper engaged parts and lower engaged parts respectively correspondingly formed on upper and lower faces thereof and arranged in a lengthwise direction of said belt; anda large number of blocks each including a fitting groove on each side face thereof in a widthwise direction of said belt and upper and lower contact parts formed on upper and lower sides of said fitting groove to be brought into contact with a pulley groove face, said fitting groove including an upper engaging part formed on an upper face thereof to be engaged with each of said upper engaged parts of said tension members and a lower engaging part formed on a lower face thereof to be engaged with each of said lower engaged parts of said tension members,wherein said blocks are fixedly engaged with said tension members by fitting said tension members in said fitting grooves of said blocks,each of said blocks includes a reinforcing member embedded in a resin part such that at least said upper and lower engaging parts and said contact parts are made from said resin part,said reinforcing member includes upper and lower beam parts located above and below said fitting groove and a pillar part having an axis for connecting bases of said upper and lower beam parts wherein end portions of said upper beam part are entirely embedded in said resin part,wherein a beam angle between a center line of said upper beam part of said reinforcing member and a pulley groove face closer to a center of a pulley than a portion of the pulley in contact with said upper contact part on the side face of said block is 90.degree. or more, andwherein an angle between said center line of said upper beam part and said axis of said pillar part is acute.