Chain guide

Abstract

The invention provides a chain guide. The chain guide is simple in structure, the occupation space of a chain inside an engine room can be reduced, while the necessary strength, rigidity, and durability are maintained, the sheet thickness can be decreased, the number of production steps and material waste can be reduced, stress concentration and strains during bending and fixing can be reduced, load offset during fixing and loosening of bolts or the like can be prevented, the increase in vibrations and noise during the use can be prevented, the maintenance operation load can be reduced, and utility can be increased with a simple configuration. The chain guide (100) is provided with a base member (120) supporting a guide shoe (110). The base member (120) has a base mounting portion (122) and base wall portions (124) formed to sandwich the guide shoe (110) from both sides in a width direction. The guide shoe (110) has a guide shoe mounting portion (114) at a position apart from the base mounting portion (122) in the chain running direction.

Description

technical field [0001] The invention relates to a chain guide, which comprises: a guide block, which slides and guides a moving chain; and a base component, which supports the guide block along the moving direction of the chain. Background technique [0002] Conventionally, in order to stabilize and properly maintain the tension of the chain moving between the sprockets, a chain guide provided with a guide block for slidingly guiding the moving chain is generally used. [0003] For example, if Figure 16 As shown, the following timing system is known, which is a transmission such as a roller chain that performs seamless rotation between the sprockets S1, S2, and S3 of the crankshaft and the camshaft respectively arranged in the engine room (engine room). The timing system of the engine in which the chain CH moves, and the timing chain CH rotates seamlessly between the driving sprocket S1 of the crankshaft installed in the engine room E and a pair of driven sprockets S2 and S...

AI Technical Summary

Problems solved by technology

[0022] When the chain guide is fixed by passing bolts or the like through the elongated mounting hole, the difference in expansion and contraction between the chain guide and the engine block due to temperature changes during use, or changes in the tension of the chain, or vibration of the chain guide The slight deformation of the bolt and other fixing parts in the long hole moves slightly, so when used for a long time, it becomes the main cause of loosening of the fixing and increased vibration and noise. In the worst case, there is a chain guide in the The problem of detachment in the engine room, in order to alleviate this problem, the frequency of maintenance work needs to be increased

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