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Chain guide

A guide and chain technology, applied in belts/chains/gears, engine components, valve devices, etc., can solve the problems of loose installation state of chain guides, screw penetration holes and loose mounting screws, etc. Ease of use and the effect of improving workability

Pending Publication Date: 2022-07-19
TSUBAKIMOTO CHAIN CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] This chain guide is mounted on an installation object such as an engine block (for example, referring to Patent Documents 1 to 3) by means of mounting screws passing through screw through holes formed on the guide body. It is made of synthetic resin, but the mounting screws are made of metal. Therefore, there is a problem that heat shrinks between the guide body made of synthetic resin and the mounting screws made of metal when the engine is driven. Poor, due to this poor heat shrinkage, it will cause looseness between the screw through hole and the mounting screw, resulting in loosening of the installation state of the chain guide

Method used

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Examples

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Embodiment Construction

[0039] Next, the chain guide 10 which concerns on 1st Embodiment of this invention is demonstrated based on drawing.

[0040] like figure 1 and Figure 8 As shown, the chain guide 10 according to the first embodiment of the present invention is used by being incorporated into a timing system installed in an engine room, and is fixed to an engine block E as an installation object by an installation screw B, so that the The chain CH is slidably guided, and the chain CH is wound between the sprockets S1 to 3 respectively provided on the crankshaft and the camshaft. In addition, in figure 1 In the timing system shown, in addition to the chain guide 10, as a guide for slidingly guiding the moving chain CH, a rocking guide G is provided, and the rocking guide G is pivotally supported in the engine compartment so as to be rockable, And it is pressed toward the chain CH side by the tensioner T.

[0041] like figure 2 and image 3 As shown, the chain guide 10 includes a guide body...

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Abstract

Provided is a chain guide (10) provided with at least one bush structure section (40) for attaching a bush member (30) to a guide body (20), the chain guide (10) being characterized in that the guide body (30) has: a cylindrical section insertion hole (25) into which a bush cylindrical section (31) is inserted; and a back-side restricting section (26) that restricts the movement of the flange section (32) on the back side in the guide width direction, and that restricts the movement of the flange section (32) on the back side in the guide width direction, and that restricts the movement of the flange section (32) on the back side in the guide body (30) only at one location on the outer peripheral side of the cylindrical section insertion hole (25) when viewed in the guide width direction for each bush structure section (40). A front-side restricting section (27a) for restricting the movement of the flange section (32) on the front side in the width direction of the guide is provided.

Description

technical field [0001] The present invention relates to a chain guide for slidingly guiding a moving chain in a timing system of an engine or the like. Background technique [0002] Conventionally, in a timing system of an engine or the like, in order to stabilize the chain moving between the sprockets and maintain proper tension, a chain guide that slides and guides the moving chain is generally used. [0003] Such a chain guide is attached to an installation object such as an engine block by means of a mounting screw passed through a screw penetration hole formed in the guide body (for example, refer to Patent Documents 1 to 3). Since the mounting screw is made of synthetic resin and the mounting screw is made of metal, there is a problem that thermal shrinkage occurs between the synthetic resin guide body and the metal mounting screw due to heat when the engine is driven. The difference is due to this difference in thermal shrinkage, which may cause looseness between the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H7/18
CPCF16H7/18F16H2007/185F01L1/022F16H7/06F16H2007/0872F16H7/08
Inventor 村井宏辅渡边将成
Owner TSUBAKIMOTO CHAIN CO
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