Mitsuboshi Belting Ltd.

Toyota Body Seiko Co., Ltd.

Susumu Osaki

Yusuke Hemmi

Shin Shiraki

Takahide Okazawa

Motohisa Nakamura

Takayuki Ogasawara

Akihiko Motozaki

Takumi Mizumoto

A toothed belt including a reinforcing layer with 0.05 mm to 0.2 mm thickness buried along a contour of tooth portions such that a maximum height from a bottom portion of the tooth portion to the reinforcing layer is in a range of 30% to 100% of a height from the bottom portion to a tooth tip, in which the reinforcing layer includes reinforcing fiber filaments arranged in a belt circumferential direction, in the reinforcing layer, a weight per unit area of fibers intersecting the belt circumferential direction is 30% or less of a weight per unit area of the reinforcing fiber filaments, the reinforcing layer has a structure where the reinforcing fiber filaments are arranged in the belt circumferential direction and bonded to form a sheet shape in an untwisted state, and a tensile modulus of the reinforcing fiber filament satisfies a specific condition.

Toothed belt

The present invention relates to a toothed belt, including: a back portion including a tension member; a plurality of tooth portions; a back rubber layer; and a first rubber layer and a second rubber layer that are formed on a belt inner circumferential side with respect to the tension member, in which an elastic modulus of the first rubber layer is larger than that of the second rubber layer, the first rubber layer includes a first crosslinked rubber composition including a first rubber component and a first short fiber, a proportion of the first short fiber is 5 parts by mass to 60 parts by mass with respect to 100 parts by mass of the first rubber component, the first short fiber is oriented in a belt longitudinal direction along a contour of the tooth portion.

Toothed belt and manufacturing method therefor

The present invention pertains to a seat slide device having: a lower rail fixed above a floor and extending in one direction; an upper rail connected to a seat and capable of moving along the lower rail; a drive pulley connected to a drive source and attached to the seat or the upper rail; an ended belt wound on the drive pulley so that one surface contacts the drive pulley, both ends of the ended belt being fixed to the floor or the lower rail; and a first and second pressing member attached to a position on the floor side of the seat or the upper rail closer than the drive pulley, each pressing member contacting the other surface of the ended belt, and the first pressing member, the drive pulley, and the second pressing member being disposed in the stated order along the one direction.

Seat slide device

A toothed belt includes: a belt main body having a tooth portion and a groove portion alternately disposed at a fixed pitch in a longitudinal direction, and an outer portion disposed on the outer surface thereof; and a cord buried on a predetermined pitch line on the outer portion, in which the belt main body includes: a support layer, disposed under the cord and containing a thermoplastic polyurethane material; and a cured polyurethane elastomer in addition to the support layer, and in which the support layer is formed of a mixture of the thermoplastic polyurethane material and the polyurethane elastomer, which are integrally cured.

The present invention relates to a toothed belt driving device for bicycle, in which, in drive state, the pulley groove portion of a driven pulley is in surface contact with a portion of a surface of the belt tooth portion, this portion in surface contact is present in a range positioned closer to a tooth root portion than a reference circle, the maximum value of the shortest distance between the pulley groove portion of the driven pulley and the surface of the belt tooth portion opposite to the traveling direction of the belt is 10% or more and 18% or less of the tooth pitch, a groove depth of the driven pulley is greater than the tooth height of the belt tooth portion, and the difference therebetween is 5% or more of the tooth height.

Growing community of inventors

Hyogo, Japan

Susumu Osaki