Cooperating joining guide apparatus for high-speed drive

Abstract

A transfer guide for a high-speed power transmission, which can cancel a change in a transmission chain speed so that smooth transmission timing can be realized and a driving power and vibration noises of the transmission chain can be significantly reduced. A curve track T for a transfer guide 100 for a high-speed power transmission disposed in a transfer position X2 just before a transmission chain, which is traveled at a fixed speed by pressing the chain on the inner circumferential side of the chain with a travel limiting guide R, is meshed with a sprocket S, which is rotated at a fixed speed, is defined along an movement passage of the roller C2 in the transfer position X2. Thus when three rollers C1, C2, and C3 in a transmission chain C, which are continued at desired chain pitches Cp, are to be meshed with a sprocket S while being opened on an outer circumferential side of the chain from a travel limiting guide R, in such an arrangement traveling state that always corresponds to a travel limiting position X1, a transfer position X2 and a meshing position X3, is defined along an movement passage of the roller C2 in the transfer position X2, an change in the speed generated in a roller in the transmission chain C, which meshes the sprocket S to perform polygonal motion, is canceled.

Description

technical field [0001] The present invention relates to a cooperating guide device for high-speed transmission, which is used to eliminate the problem of the transmission chain meshing with the sprocket and performing polygonal motion in a power transmission mechanism that makes the camshaft of an internal combustion engine such as a vehicle engine rotate at a high speed at a predetermined cycle Speed ​​changes. Background technique [0002] As a prior art, in the vicinity of the position where the chain and the sprocket mesh, in order not to act on the tooth surface of the sprocket as much as possible, the weight of the chain arranged along the traveling direction of the chain and entering the sprocket, A path guide for high-speed transmission having guide surfaces for supporting rollers of a chain suppresses vibration and noise generated in a chain transmission that transmits power between high-speed rotating sprockets (for example, refer to Patent Document 1). [0003] P...

AI Technical Summary

Problems solved by technology

[0005] However, because the existing high-speed transmission path guide device is designed so that the center of the rollers pivotally connected to the roller chain enters from the tangential direction of the meshing pitch circle formed on the sprocket, it is difficult to operate when the number of teeth of the sprocket is small. , the roller chain will produce a large speed change due to the polygonal motion generated by the rotation of the sprocket

[0006] Therefore, due to the large speed change of this roller chain, the intermittent transmission load generated on the sprocket and roller chain increases with the high-speed rotation of the sprocket rotating at a constant speed. The load not only has a subtle adverse effect on the transmission cycle of an internal combustion engine such as a vehicle engine through the camshaft, but also has the problem of impairing the durability of the chain power transmission mechanism composed of roller chains, sprockets, etc.

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