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Tensioner with increased damping and arm on base cup configuration

一种张紧器、杯状件的技术，应用在车辆部件、摩擦减振器、机器/发动机等方向，能够解决带张力丧失、臂不能充分地跟随带、昂贵张紧器等问题

Active Publication Date: 2016-04-20
LITENS AUTOMOTIVE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With insufficient damping of the tensioner arm, a sudden change in belt tension would prevent the arm from following the belt adequately, which would result in the aforementioned loss of belt tension
Methods to obtain suitable damping have been proposed in the past, however, these methods generally result in expensive tensioners, which is undesirable

Method used

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  • Tensioner with increased damping and arm on base cup configuration
  • Tensioner with increased damping and arm on base cup configuration
  • Tensioner with increased damping and arm on base cup configuration

Examples

Experimental program
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Effect test

Embodiment Construction

[0023] refer to figure 1 , which shows a crankshaft 910 of an engine 913 of a vehicle (not shown). It should be noted that the engine 913 is shown as a simple rectangle for illustrative purposes. It should be understood that the motor 913 may have any suitable shape. The vehicle may be any suitable vehicle, such as an automobile, truck, van, minivan, bus, sport utility vehicle, military vehicle, boat, or any other suitable vehicle. Timing belt 914 is shown extending between pulley 912 on crankshaft 910 of engine 913 and a pair of pulleys 904a and 904b on camshaft 905a and camshaft 905b to transfer rotational power from crankshaft 910 to the camshafts Shafts 905a and 905b.

[0024] For the implementation in which the timing belt is submerged in an oil sump (referred to as a belt in oil arrangement), the tensioner 100 is shown mounted to the engine 913 between the crankshaft 910 and the camshaft 905a. Tensioner 100 is used to maintain tension in timing belt 914 . An idler g...

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PUM

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Abstract

In an aspect, a tensioner is provided for maintaining tension in an endless drive member in a belt-in-oil drive system. The tensioner includes a base that is mountable to a stationary structure and that has a circumferential wall that defines an arm pivot axis, an arm having a radially inner arm surface, and an endless drive member engagement surface that is engageable with an endless drive member, a bushing positioned between the radially inner arm surface and the circumferential wall of the base cup, and a tensioning spring. The arm is supported on the base cup via the bushing. The tensioning spring is positioned to bias the arm in a first direction about the arm pivot axis.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application No. 61 / 876,502, filed September 11, 2013, the contents of which are incorporated herein in their entirety. technical field [0003] The present disclosure generally relates to the field of tensioners for endless transmission members such as chains or timing belts. Background technique [0004] Engines in many vehicles today use timing belts to drive certain components that need to be precisely synchronized with the rotation of the engine, such as a camshaft that controls the opening and closing of the valves relative to the cylinders. The tensioner used to maintain the tension in the timing belt plays a key role as a loss of tension in the timing belt can cause the timing belt to skip teeth on the toothed pulley to which it is attached. This causes components such as the valves to be out of sync with the engine. This desynchronization can cause ser...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H7/12B60K25/02F02B67/06F16F7/02
CPCF16H7/1218F02B67/06F16H7/0831F16H2007/081F16H2007/084
Inventor 马莱克·弗兰考斯基
Owner LITENS AUTOMOTIVE INC
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