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Continuously variable transmission drive pulley

A continuously variable transmission, driving pulley technology, applied in the direction of vehicle gearbox, belt/chain/gear, transmission, etc., can solve the problem of the maximum length of the sleeve, limiting the life of the sleeve, etc.

Active Publication Date: 2017-02-22
BOMBARDIER RECREATIONAL PROD INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the presence of springs in the radial direction between the two shafts, the maximum length of the sleeve is limited, which limits the life of the sleeve

Method used

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  • Continuously variable transmission drive pulley
  • Continuously variable transmission drive pulley
  • Continuously variable transmission drive pulley

Examples

Experimental program
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Embodiment Construction

[0049] A description will be made regarding a driving pulley for a continuously variable transmission (CVT) of the snowmobile 10 . However, it is contemplated that the drive pulley could be used in CVTs for other vehicles such as, but not limited to, road vehicles, off-road vehicles, motorcycles, scooters, road trikes, and all-terrain vehicles (ATVs). It is also contemplated that a CVT may be used in devices other than vehicles.

[0050] now go to figure 1 , the snowmobile 10 includes a front end 12 and a rear end 14 defined to coincide with the forward travel direction of the snowmobile 10 . The snowmobile 10 includes a frame 16 that includes a channel 18 , a motor cradle portion 20 , and a front suspension assembly portion 22 . Channel 18 , comprising one or more metal plates arranged to form an inverted U-shape, is connected at the front to motor cradle portion 20 and extends rearwardly from the front along longitudinal axis 23 . Motor - in this implementation the motor ...

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PUM

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Abstract

A drive pulley for a CVT has a fixed sheave, a fixed sheave shaft fixedly connected to the fixed sheave, a movable sheave, a movable sheave shaft fixedly connected to the movable sheave, a spider and at least one centrifugal actuator. The fixed sheave shaft is disposed at least in part inside the movable sheave shaft. The movable sheave is disposed axially between the spider and the fixed sheave. A biasing member biases the movable sheave axially away from the fixed sheave. A torque transfer assembly is operatively connected to at least one of the fixed sheave and the movable sheave. The torque transfer assembly transfers torque between the fixed sheave and the movable sheave. The biasing member, the at least one centrifugal actuator and the torque transfer assembly are disposed radially outward of the fixed and movable sheave shafts.

Description

[0001] cross reference [0002] This application claims priority to US Provisional Patent Application No. 61 / 972,587, filed March 31, 2014, which is hereby incorporated by reference in its entirety. technical field [0003] This technology relates to drive pulleys for continuously variable transmissions. Background technique [0004] A conventional snowmobile drive train incorporates a continuously variable transmission (CVT) having a drive pulley operatively coupled to the engine crankshaft and a driven pulley coupled to the driven shaft. The driving pulley transmits torque to the driven pulley via a belt wound around the driving pulley and the driven pulley. Typically, the driven shaft is a transverse intermediate drive shaft that drives the input member of the chain and sprocket reduction transmission. The output of the reduction transmission is coupled to one end of the axle where the drive track drive sprocket is positioned. [0005] The drive pulley includes a centr...

Claims

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Application Information

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IPC IPC(8): F16H9/12F16H55/36F16H55/52F16H55/54F16H55/56
CPCF16H9/12F16H55/36F16H55/52F16H55/54F16H55/56F16H9/18B62M9/08B62M27/02F16H9/14F16H55/563F16H2055/366
Inventor 沙维尔-皮埃尔·艾特辛扬·波尔吉斯
Owner BOMBARDIER RECREATIONAL PROD INC