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Chain guide and chain transmission device using same

A guide and chain drive technology, applied in the direction of transmission, belt/chain/gear, mechanical equipment, etc., can solve the problems of smaller contact surface, abnormal noise, and increased contact pressure.

Pending Publication Date: 2021-08-31
DAIDO KOGYO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In the chain guide of Patent Document 1 mentioned above, even if the oil stays in the recessed part of the guide groove, the oil retention force is improved, and the frictional resistance can be reduced by reducing the contact area of ​​the chain, there is a problem that the chain link plate and the convex part of the chain are not Intermittent abutment, intermittent and polygonal abutment with the above-mentioned chain produces abnormal noise caused by hitting sound, and because the contact surface becomes smaller and the contact pressure increases, the chain guide made of synthetic resin premature wear concerns
[0009] Even if the chain guide of the above-mentioned Patent Document 2 can reduce the gap between the chain and the engine block to make the timing chain compact, and can reduce the contact area with the chain to reduce the frictional resistance, there are contact points arranged separately. The parts are composed of non-contact parts with openings, and the chain runs without being guided without contact, so the chain may vibrate due to the variable load of the engine, causing abnormal noise and abnormal wear of the sliding surface.

Method used

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  • Chain guide and chain transmission device using same
  • Chain guide and chain transmission device using same
  • Chain guide and chain transmission device using same

Examples

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Embodiment Construction

[0044] Embodiments of the present invention will be described below with reference to the drawings. This embodiment is applied to a timing chain transmission that transmits rotation of an engine crankshaft to a camshaft. Such as figure 1 and figure 2 As shown, in the chain transmission 1 , a chain 4 is wound between an engine crank sprocket 2 on the driving side and two cam sprockets 3 and 3 on the driven side. The chain 4 is preferably a silent chain, but is not limited thereto, and may be other transmission chains such as roller chains and bush chains.

[0045] The chain transmission 1 arranges the chain tensioner 5 in sliding contact with the slack-side outer surface of the chain 4 , and arranges the chain guide 6 in sliding contact with the tension-side outer surface of the chain 4 . The chain tensioner 5 has an arcuate member 9 made of wear-resistant synthetic resin, steel plate, or the like, and an arcuate sliding contact surface 9 a of the arcuate member is in slidin...

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PUM

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Abstract

A chain guide (6) has: a contact guide part (13) for guiding a chain (4) by coming into contact with the chain (4); and a vibration control part (15) having a zero touch surface extending along a travel line (S-S) of the chain (4).

Description

technical field [0001] The present invention relates to a chain guide that contacts a chain to guide the chain, and a chain transmission using the chain guide. Background technique [0002] Usually, such as Figure 9A and Figure 9B As shown, a chain transmission device, such as a timing chain transmission device 101 disposed in an engine, has a crankshaft sprocket 102, a cam sprocket 103, and a chain 104 wound between them, and a chain tensioner is disposed on the slack side of the chain 104. The tensioner 105 is provided with a chain guide 106 on the tension side of the chain 104 . The chain guide 106 has a shoe 106a that is in sliding contact with substantially the entire area of ​​the tension side chain, and produces vertical resistance to each link of the chain due to chain tension. As a result, frictional resistance occurs during running of the chain 104 , and energy loss occurs during transmission of the timing chain transmission 101 . This energy loss increases th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H7/18
CPCF16H7/18F16H7/06F16H7/08F16H2007/0872F16H2007/0893F16H2007/185
Inventor 直江俊弥关秀明
Owner DAIDO KOGYO CO LTD