Borgwarner Inc.

Borgwarner Morse Tec Japan K.k.

Hiroyoshi Mitsuhashi

Shinji Tsuruta

Kensuke Nakamura

Sadao Kojima

Hiroyuki Takeda

Hajime Maeda

Yasuo Horikawa

Masashi Yamada

Toru Okazaki

Akira Terao

The present invention provides a blade-type tensioner system for a chain that can easily improve spring properties. A blade-type tensioner includes a blade shoe and a blade spring positioned on the back side of chain sliding surface of the blade shoe so as to impart tension to a chain through the blade shoe. The blade shoe is pivotably supported around a shoulder bolt inserted into a proximal end portion of the blade shoe, and a distal end portion of the blade shoe is slidably supported on a supporting face provided in the engine. The distal end portion of the blade shoe contacts a flat, first supporting face at a point. When tension in the chain is increased, the distal end portion contacts a concave, second supporting face at a point which is continuous with the first supporting face.

Blade-type chain tensioner system

A blade tensioner of a blade tensioner system for a chain that drivingly connects a drive shaft to a driving shaft in an engine, that improves the chain-damping efficiency in a blade tensioner applied to the chain within an engine, prevents the sideways tilt of the blade tensioner during operation, in a blade tensioner applied to the chain in an engine, and provides a blade tensioner with a functionality that allows it to transversely guide a chain along the chain sliding face in a blade shoe, while maintaining the flexural deformability (i.e., the flexibility) of the blade shoe.

Blade tensioner and system for a chain

A blade tensioner includes a blade shoe having a chain sliding face and a plurality of blade springs disposed and stacked at the opposite side to the chain sliding face. A clip is provided on the blade springs. The clip includes a clip body encompassing the blade springs, which elastically contacts the blade springs, and an engaging portion integrally formed with the clip body. The engaging portion includes an engagement hole to engage a tool.

Clip for blade tensioner and blade tensioner with clip

Growing community of inventors

Nabari, Japan

Hiroyoshi Mitsuhashi