Automatic tensioner with symmetrically arranged damping device
A damping device and symmetrically arranged technology, which is applied in the field of transmission system, can solve the problems of tensioning device failure and damping device cannot be provided stably, and achieve the effects of damping vibration, improving service life and long life
Active Publication Date: 2019-02-12
NINGBO FENGMAO FAR EAST RUBBER
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Problems solved by technology
[0003] The purpose of the present invention is to overcome the existing damping device of the current automatic tensioner which cannot stably provide the required damping force in a wide range of working conditions, so that the tensioning device cannot For the lack of uniform wear and premature failure, provide a damping device that can stably provide the required damping force in a wide range of working conditions and improve the service life of the tensioner. An automatic tensioner equipped with a symmetrically arranged damping device
Method used
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[0026] The present invention will be further described below in conjunction with the accompanying drawings.
[0027] as attached figure 1 , attached figure 2 And attached image 3 As shown, the automatic tensioner 1 includes: a base 2, a pivoting arm 3, a coil spring 4 and a pulley 9; two lugs 201 extend outward along the circumference of the base 2, and the base passes through The lug 201 is fixed on the engine body with bolts; the mandrel 5 is coaxially installed in the circular boss 202 in the inner cavity of the base 2 in an interference manner, and the pivot arm 3 is passed through a wear-resistant lining. The sleeve 13 is installed coaxially with the mandrel 5; the wear-resistant bushing 13 cooperates with the pivot arm 3 in an interference fit manner, and cooperates with the mandrel 5 in a clearance fit manner; the pivot arm 3 can Reciprocating rotation around the mandrel 5 relative to the base 2, the wear-resistant bushing 13 installed between the pivot arm 3 and t...
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The invention relates to the field of transmission systems, in particular to an automatic tensioner provided with damping devices in symmetrical arrangement. The automatic tensioner comprises a base, a pivoting arm and helical springs; the base is fixed to an engine body; the pivoting arm installed on the base through a core shaft is capable of reciprocating rotationally relative to the base around the core shaft; the helical springs are installed between the base and the pivoting arm in a pressed way and used for generating continuous tension force. The automatic tensioner is characterized in that the automatic tensioner further comprises two damping devices which are in symmetrical arrangement on two sides of the core shaft; the damping devices are matched with the structure of the pivoting arm so that circumferential displacement of the damping devices relative to the pivoting arm is limited; the outer walls of the damping devices fit the inner wall of the base; the inner walls of the damping devices fit the helical springs. The automatic tensioner provided with the damping devices in symmetrical arrangement has the advantages that since the damping devices can provide damping force stably on common working condition as needed, the service life of the tensioner is prolonged.
Description
technical field [0001] The invention relates to the field of transmission systems, in particular to an automatic tensioner equipped with symmetrically arranged damping devices. Background technique [0002] The main purpose of the automatic tensioner of the automobile belt transmission system is to make the tension of the belt in the transmission system appropriate, to compensate the tension change or attenuation caused by the swing of the tension arm caused by belt wear and engine speed fluctuation, so as to avoid belt slipping, Noise and vibration allow the system to work normally and effectively; in order to effectively attenuate the vibration of the tensioning device during work and reduce the vibration amplitude of the tensioning device, a damping device is generally used in the tensioning device. The utility model of Chinese patent application number: CN201020219536.X discloses an automatic belt tensioner for an engine, including an automatic tensioner body, a spring c...
Claims
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IPC IPC(8): F16H7/10
CPCF16H7/0838F16H7/10
Inventor 蒋春雷魏水生陈讲虎徐谱
Owner NINGBO FENGMAO FAR EAST RUBBER