V-Ribbed Belt

Patent metadata

Field	Value
Publication number	US-2020217396-A1
Application number	US-201816628360-A
Country	US
Kind code	A1
Filing date	Jul 4, 2018
Priority date	Jul 4, 2017
Publication date	Jul 9, 2020
Grant date	—

Abstract

The present invention relates to a V-ribbed belt that includes carbon-fiber twisted cords as core wires, the V-ribbed belt having a tensile elasticity of 240-500 N/(mm·%), and the core wire diameter of the core wires being 0.6-1.2 mm. The V-ribbed belt may have a tensile strength of 620 N/mm or more per 1 mm width of the belt.

First claim

1 . A V-ribbed belt comprising a twisted cord comprising a carbon fiber as a core wire, wherein:
the belt has a tensile elastic modulus of 240 to 500 N/(mm·%); and the core wire has a core wire diameter of 0.6 to 1.2 mm.

2 . The V-ribbed belt according to claim 1 , having a tensile strength of 620 N/mm or more per 1 mm width of the belt.

3 . The V-ribbed belt according to claim 1 , having a pitch of the core wire of 0.1 to 0.5 mm larger than the core wire diameter.

4 . The V-ribbed belt according to claim 1 , having a total fineness of the core wire of 300 to 900 tex.

5 . The V-ribbed belt according to claim 1 , wherein the core wire is a single-twisted yarn in which a plurality of carbon fiber filaments are arranged and then twisted in one direction, and a number of twists is 5 to 10 times/10 cm.

6 . The V-ribbed belt according to claim 1 , comprising a compression rubber layer comprising staple fibers protruding from a surface thereof.

7 . The V-ribbed belt according to claim 1 , having a number of ribs of 3 to 5.

8 . The V-ribbed belt according to claim 1 , having an average width of 7 to 22 mm.

9 . The V-ribbed belt according to claim 1 , which is attached to an engine mounted with a belt-type ISG drive in which a dynamic tension per 1 mm width of the belt exceeds 85 N/mm.

10 . The V-ribbed belt according to claim 1 , which is attached to an engine mounted with a belt-type ISG drive including a tensioner at a back surface of the belt, wherein the V-ribbed belt comprises a tension layer selected from the group consisting of a tension layer whose surface is covered with a cloth, a tension layer which includes staple fibers, and a tension layer whose surface is covered with a cloth and which includes staple fibers.

Assignees

• Mitsuboshi Belting Ltd

Inventors

• Tamura Masashi
• Nishiyama Takeshi
• Mitsutomi Manabu
• Matsumura Hiroshi

Classifications

• F16G5/10

  with metal reinforcement · CPC title

• D10B2101/12

  Carbon; Pitch · CPC title

• D02G3/447 Primary

  Yarns or threads for specific use in general industrial applications, e.g. as filters or reinforcement · CPC title

• F16G5/08

  with textile reinforcement · CPC title

• F16G5/06 Primary

  with reinforcement bonded by the rubber · CPC title