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Pulley assembly with radially oriented decoupling mechanism

A technology of pulleys and components, applied in the direction of toothed components, belts/chains/gears, mechanical equipment, etc., can solve the difficulty of using OAD, OAD is easily affected by pollution or heat, low hysteresis or smooth spring rate And other issues

Active Publication Date: 2018-02-13
DAYCO IP HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, OAD introduces additional cost due to part complexity and packaging space in the accessory assembly
This makes it difficult to use OAD in some applications
Also, some types of OAD are particularly susceptible to pollution or heat
Finally, some types of OADs can have issues with noise, torque consistency, low hysteresis, or smooth spring rates

Method used

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  • Pulley assembly with radially oriented decoupling mechanism
  • Pulley assembly with radially oriented decoupling mechanism
  • Pulley assembly with radially oriented decoupling mechanism

Examples

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Embodiment Construction

[0018] The following detailed description will illustrate the general principles of the invention, examples of which are further illustrated in the accompanying drawings. In the drawings, like reference numbers refer to identical or functionally similar elements.

[0019] now refer to figure 1 , shows an accessory drive system 10 of a vehicle, such as an internal combustion engine. The accessory drive system 10 includes an endless belt 30 for driving a plurality of accessories, figure 1 These accessories are not shown. Instead, figure 1 Attachments are represented diagrammatically by multiple pulley assemblies in . specifically, figure 1 Shown is entrainment around crankshaft pulley assembly 12, fan / water pump pulley assembly 14, alternator pulley assembly 16, power steering pulley assembly 18, idler pulley assembly 20, and tensioner pulley assembly 22. ) with 30. In some embodiments, the tensioner pulley assembly 22 includes damping, such as asymmetric damping utilizin...

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PUM

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Abstract

A pulley assembly with a radially oriented decoupling mechanism is disclosed. The pulley assembly includes a pulley body having a bore therethrough, a hub, and a one-way clutch mechanism. The main body of the pulley can rotate in a dominant direction. The hub defines an axis of rotation. A hub is disposed within the pulley body. A one-way clutch mechanism radially surrounds the hub. The one-way clutch mechanism includes an engaged position and a disengaged position. If the one-way clutch mechanism is in the engaged position, the hub and pulley body rotate together in the prevailing direction. If the one-way clutch mechanism is in the disengaged position, the hub is free to rotate relative to the pulley body.

Description

technical field [0001] The present invention relates generally to pulleys, and more particularly to pulley assemblies having radially oriented decoupling mechanisms. Background technique [0002] The vehicle engine can be utilized to drive various automotive accessory components including, for example, water pumps, alternator / generators, fans for cooling the coolant, power steering pumps, and compressors. In particular, a drive pulley actuated by the motor vehicle's engine shaft drives an endless drive belt, which in turn drives the accessory assembly through a driven pulley. The endless drive belt, various pulleys and tensioner pulley assembly may be referred to as an accessory drive system. [0003] Large speed transitions can be produced by periodic torque pulses initiated by, for example, ignition of a combustion engine. These speed transitions interrupt the smooth operation of the driven components of the accessory drive system. In addition, the inertia and driven sp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D41/063
CPCF16D41/066F16D2023/123F16D2041/0665F02B67/06F16D41/061F16H55/36F16D41/06F02B61/00F02B63/00
Inventor A·E·兰奴提
Owner DAYCO IP HLDG