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Chain sliding guide shoe

A technology of guide shoes and chains, applied in the direction of belts/chains/gears, mechanical equipment, transmission devices, etc., which can solve the problem of forming or using heat capacity or internal residual stress and strain, accelerating convex crimping surface 35, increasing frictional resistance, etc. Problems, achieve the effect of reducing frictional resistance, reducing wear, and reducing running frictional resistance

Active Publication Date: 2014-08-20
TSUBAKIMOTO CHAIN CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, the groove portion 37 on the middle section is closed by the flat crimping surface 34 provided on the entering side and the disengaging side, so that the lubricating oil in the engine cannot easily flow into the groove portion 37 or flow out from it and cannot be sufficiently circulated, so that it cannot Use lubricating oil to cool the heat generated by the friction between the roller chain and the convex crimping surface 35, and accelerate the wear of the convex crimping surface 35 or the plates L1, L2 due to the increase in frictional resistance due to heat generation
In addition, since the cross-sectional shape of the chain running guide shoe 32 is different in the length direction, it is easy to generate strain due to the difference in heat capacity or internal residual stress during molding or use, resulting in reduced dimensional accuracy.

Method used

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  • Chain sliding guide shoe
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The limit guide rails 5, 5 erected on the running guide surface 4 have raised portions 5a on their ascending portions, and the starting ends of the raised portions 5a on the running guide surface 4 become the raised base end portions 5b of the limit guide rails 5. In addition, the protruding portion 5a may not be provided, and in this case, the perpendicular corner portion 5d between the running guide surface 4 and the end surface 5c of the regulating rail 5 becomes a standing base end portion.

[0043] The groove 6 is a substantially U-shaped groove with an open upper side, and is open on the chain entry side and the exit side. and if Figure 4 As shown, the width W3 of the groove 6 is formed to be wider than the inner width W2 of the roller chain C and narrower than the outer width W1. In addition, an arc-shaped (radius of curvature R1) chamfer 4a is formed on the corner of the running guide surface 4 on the upper end 6b of the groove 6, and the starting end of the c...

Embodiment 2

[0054] The groove 16 is formed by a downwardly curved arc-shaped (curvature radius R2 ) curved surface, and is open on the chain entry side and exit side. Furthermore, the width W7 of the groove 16 is formed to be wider than the inner width W2 of the roller chain C and narrower than the outer width W1.

[0055] and if Figure 6 As shown, the distance W8 between the standing base end 15b of the limiting guide rail 15 erected on the running guide surface 14 on one side and the upper end 16a of the groove 16 on the running guide surface 14 on the other side is larger than that of the roller chain C The outer width W1 is narrow or approximately equal.

[0056] The operation and effect of the chain running guide shoe 13 having the above configuration are as follows.

[0057] The chain running guide shoe 13 spans the full length of the running direction of the roller chain C and has: a pair of running guide surfaces 14,14; two limit guide rails 15,15 erected on the outermost sides...

Embodiment 3

[0065] The regulation rails 25 , 25 erected on the running guide surface 24 have raised portions 25 a on their rising portions, and the starting ends of the raised portions 25 a serve as raised base end portions 25 b of the regulation rails 25 . In addition, the protruding portion 25a may not be provided, and in this case, the perpendicular corner portion between the running guide surface 24 and the wall surface 25c of the regulating rail 25 becomes a standing base end portion.

[0066] The groove 26 is formed by a downwardly curved arc-shaped (curvature radius R2 ) curved surface, and is open on the chain entry side and exit side. Furthermore, the width W9 of the groove 26 is formed to be wider than the inner width W2 of the roller chain C and narrower than the outer width W1. In addition, an arc-shaped (radius of curvature R3) chamfer 24a is formed at the corner of the running guide surface 24 at the upper end of the groove 26, and the starting end of the chamfer 24a of the ...

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Abstract

The object of the present invention is to provide a chain running guide shoe with high dimensional accuracy, which can reduce the frictional resistance between the chain running guide shoe and the plate of the running roller chain, and is easy to return to the center when the roller chain deviates laterally, In addition, frictional heat generation between the roller chain and the running guide surface is suppressed. Chain running guide shoes (3), spanning the full length of the roller chain running direction with: a pair of running guide surfaces (4) slidingly guiding the plate end faces on both sides of the roller chain (C), limiting the lateral movement of the roller chain The limiting guide rail (5), the groove (6) provided between the running guide surfaces (4, 4), etc. The groove (6) is roughly U-shaped with an open top, and is formed to be wider than the inner width (W2) of the roller chain and narrower than the outer width (W1). The upper end (6b) of the groove (6) runs A chamfer (4a) is formed on a corner of the guide surface (4).

Description

technical field [0001] The present invention relates to a chain running guide shoe of a guide member used for tension maintenance and sliding guidance of a roller chain suspended and driven between a drive side sprocket and a driven side sprocket. Background technique [0002] Conventionally, a timing drive system of an engine is equipped with a guide member such as a guide rod for guiding a roller chain and a tensioner lever (tensioner lever) TL for applying an appropriate tension to the roller chain. It is suspended between the sprockets of the crankshaft and the camshaft arranged in the engine room and runs around. [0003] Figure 8 ~ Figure 10 An example of a guide member used in a conventional timing drive system is shown. The chain running shoe 32 included in the guide member 31 is attached to a shoe attachment member 33 which is a guide member main body. The chain runs guide shoe 32, as Figure 9 ( Figure 8 As shown in the X9-X9 line cross-section of the chain, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H7/08F16H7/18
CPCF16H7/18F16H7/00
Inventor 进谷忠司
Owner TSUBAKIMOTO CHAIN CO