Guide plate

Abstract

In a silent chain, guide plates are U-shaped so that they can deform when tension is applied to the chain, thereby avoiding deformation of the connecting pins of the chain and warping of the guide plates (110). When the chain is unloaded, the frontmost edges of front pin holes of intermediate link plates of each link row are located forward of the frontmost edges of the front pin holes of the guide plates of the same link row, and the rearmost edges of the rear pin holes of the intermediate link plates (113) of each link row are located rearward of the rearmost edges of the rear pin holes of the guide plates of the same link row.

Description

technical field [0001] The invention relates to a guide plate disposed on the outermost side of a chain formed by alternately connecting a plurality of link plates through connecting pins. Background technique [0002] Conventionally, there is known a silent chain used as a transmission chain. The silent chain has a guide link row consisting of a pair of guide plates and a plurality of intermediate link plates arranged between the guide plates, and a plurality of inner chain links. A non-guiding chain link column composed of plates; a long and a short pair of long and short locking pins with locking faces as connecting pins, so that the locking face opposes the front and rear pair of connecting pins of the intermediate and inner chain plates hole, thus inserted into the connecting pin hole, and the long lock pin fits in the front and rear pair of guide pin holes of the guide plate arranged on the two outer sides in the width direction of the guide chain link row, so that the...

AI Technical Summary

Problems solved by technology

[0013] However, in the known guide plates described in Patent Document 1, etc., under no-load conditions, the two outermost surfaces of the front and rear pair of guide pin holes are arranged on the two outermost surfaces of the front and rear pair of connecting pin holes of the intermediate link plate. The two outermost surfaces are at the same position, therefore, under the load state of applying tension to the chain, along with the deformation of the guide plate, a slight stress in the bending direction still occurs on the connecting pin, so that the length of the connecting pin cannot be completely prevented. Bowing of the locking pin and bowing of the guide plate

[0014] In addition, due to the deformation of the guide plate, the angles of the two outermost faces of the front and rear pair of guide pin holes change, so the two outermost faces of the front and rear pair of connecting pin holes of the middle link plate are in the width direction. The upper shape is inconsistent, and the long lock pin used as the connecting pin is in partial contact with the front and rear pair of connecting pin holes of the middle link plate, resulting in partial wear and partial load, resulting in problems of increased heat and noise

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