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Adaptive belt tensioner system for control of reversible torque load pulley

A technology of tensioning device and pulley, applied in the direction of belt/chain/gear, transmission device, gear vibration/noise attenuation, etc., can solve problems such as difficulty in providing tension and belt slack

Inactive Publication Date: 2008-06-25
DAYCO PROD INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Often, problems arise because it is difficult to provide the required tension to all the pulleys, and it is difficult to prevent the belt from tending to momentarily move the tensioner and cause belt slack elsewhere in the system

Method used

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  • Adaptive belt tensioner system for control of reversible torque load pulley
  • Adaptive belt tensioner system for control of reversible torque load pulley
  • Adaptive belt tensioner system for control of reversible torque load pulley

Examples

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Embodiment Construction

[0019] Referring now to Figures 1 and 2 of the drawings, there is shown the front end of a vehicle engine, which may be generally designated by the reference numeral 10 . The engine uses an endless power transmission belt 12 to drive several driven accessories, as will be described later, and a tensioner 14 is used to control the belt 12 . The tensioning device 14 can generally be a tensioner-damper 14 which has a tensioning and damping effect on the belt 12 . In one embodiment, the tensioning device 14 is only moved towards the belt 12 , ie the belt 12 has no possibility of lifting the tensioning device 14 .

[0020] The endless power transmission belt 12 can be of any type known in the art and can be made primarily of polymeric materials. The belt 12 is driven by a drive pulley 16, known here as a grooved or smooth-edged wheel or disc, used as a pulley. The pulley 16 is operatively connected to the engine 10, and possibly to the crankshaft 17 of the engine 10, as is known ...

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PUM

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Abstract

A tensioner (14, 114) for an endless power transmission belt, the belt (12) being driven about a sheave. The tensioner may comprise a base (22, 122), a resilient device (46, 146), and first and second arms (24, 26; 124, 126) pivotally coupled for movement in an opened and a closed direction. The tensioner (14, 114) may also comprise first and second pulleys (25, 27; 125, 127) rotably coupled to the and second arms (24, 26; 124, 126), the resilient device (46, 146) biasing the arms in the closed direction in which the first and second pulleys (25, 27; 125, 127) apply tension to the belt (12). The tensioner (14, 114) may also comprise first and second stops (28, 30; 128, 130) positioned outside the arms on the base (22, 122) to limit the movement of the arms in the open direction in response to an increase in tension in the belt.

Description

technical field [0001] The present invention relates to a tensioner for endless power transmission belts, which tensions and dampens the belt. Background technique [0002] In the field of power transmission, an endless polymeric power transmission belt is usually used, such as a driven pulley or pulley that uses a belt to drive or rotate several auto parts. The belt is driven by a driving pulley connected to the crankshaft of the car engine. Hold to the extent required to ensure slip-free engagement and drive the driven pulley. To date, a number of belt tensioners have been proposed and used to provide the required tension. This is especially true where one of the accessories being driven is the starter of an alternator or combined alternator, the compressor of an air-conditioning system, or the power steering of a car, because when the accessory is driven, it will be on the opposite side of its pulley A tension side and a slack side are formed in the belt. The tension s...

Claims

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Application Information

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IPC IPC(8): F16H7/12F16H7/08
CPCF16H2007/0874F16H2007/0846F16H2007/0878F16H2007/081F16H7/1281F16H57/0006F02B67/06F16H7/12
Inventor 拉里·R·奥利弗理查德·J·梅克斯特罗斯约瑟夫·W·扎姆
Owner DAYCO PROD INC