V-ribbed belt

Patent metadata

Field	Value
Publication number	US-11867258-B2
Application number	US-201816628360-A
Country	US
Kind code	B2
Filing date	Jul 4, 2018
Priority date	Jul 4, 2017
Publication date	Jan 9, 2024
Grant date	Jan 9, 2024

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

The invention claimed is:

1. A V-ribbed belt comprising a twisted cord comprising a carbon fiber as a core wire, wherein:
the V-ribbed belt has a tensile elastic modulus of 240 to 500 N/(mm %), wherein the tensile elastic modulus of the V-ribbed belt is an inclination of a straight line in an area of 85-140 N/mm in a stress-strain curve;
the core wire has a core wire diameter of 0.6 to 1.2 mm; and
the core wire has a pitch that is 0.1 to 0.5 mm larger than the core wire diameter.

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 V-ribbed belt.

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

4. 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.

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

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

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

8. 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 V-ribbed belt exceeds 85 N/mm.

9. 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 V-ribbed 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

• F16G5/06 Primary

  with reinforcement bonded by the rubber · CPC title

• F16G5/08

  with textile reinforcement · CPC title

• F16G5/20

  with a contact surface of special shape, e.g. toothed · CPC title

• D02G3/447 Primary

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

• D06M15/41

  Phenol-aldehyde or phenol-ketone resins · CPC title