Driving-side pulley

a side pulley and pulley technology, applied in the direction of gearing, gearing elements, hoisting equipment, etc., can solve the problems of insufficient frictional force between the belt and the movable sheave, ineffective engine braking function, and insufficient capacity, so as to effectively prevent an unintentional creep phenomenon, the effect of sufficient capacity

Active Publication Date: 2020-01-07
KANZAKI KOKYUKOKI MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The proposed solution enables sufficient engine braking capacity when the engine output operating member is released, effectively preventing power transmission slippage and ensuring efficient power transfer between the driving and driven shafts, thereby addressing the limitations of previous configurations.

Problems solved by technology

However, the first conventional configuration has a problem in that the engine braking function cannot be sufficiently performed in a case where an operator releases an engine output operating member such as an accelerator pedal when the vehicle travels.
Therefore, enough frictional force cannot be obtained between the belt and the movable sheave and between the belt and the fixed sheave.
As a result, the belt slips with respect to both the sheaves so that the engine braking function cannot be effectively performed.
However, as with the first conventional configuration, the second conventional configuration has a problem in that the engine braking function cannot be sufficiently performed in a case where an operator releases the engine output operating member when the vehicle travels.
Therefore, enough frictional force cannot be obtained between the belt and the collar and between the belt and the movable sheave.
As a result, the belt slips with respect to the collar and the movable sheave so that the engine braking function cannot be effectively performed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0053

[0054]Hereinafter, one embodiment of a driving-side pulley according to the present invention will be explained, with reference to the attached drawings.

[0055]The driving-side pulley 100 forms a belt-type continuously variable transmission 10 in cooperation with a driven-side pulley 20 and a belt 40 such as a V-belt.

[0056]The belt-type continuously variable transmission 10 is interposed in a traveling system power transmitting path extending from a driving power source 50 such as an engine to a driving wheel 60, for example.

[0057]FIG. 1 is a schematic view of the traveling system power transmitting path to which the belt-type continuously variable transmission 10 is applied.

[0058]As shown in FIG. 1, the belt-type continuously variable transmission 10 performs a variable speed-change operation between a driving shaft 55 operatively connected to the driving power source 50 and a driven shaft 65 operatively connected to the driving wheel 60, and includes the driving-side pulley 10...

second embodiment

[0141

[0142]Hereinafter, another embodiment of the driving-side pulley according to the present invention will be explained, with reference to the attached drawings.

[0143]FIG. 10 is a partial vertical cross sectional view of the driving-side pulley 100B according to the present embodiment when the engine is in the idle state.

[0144]FIG. 11 is a partial cross sectional view taken along the line XI-XI in FIG. 10.

[0145]FIG. 12 is a partial vertical cross sectional view of the driving-side pulley 100B when the engine braking function is activated.

In the drawings, the same reference numerals are denoted for the same components as those in the first embodiment to omit the detailed explanation thereof.

[0146]The driving-side pulley 100B according to the present embodiment is different from the driving-side pulley 100 according to the first embodiment substantially only in that the cam mechanism 270 is replaced by a cam mechanism 270B.

[0147]As shown in FIGS. 10 and 12, one sheave (the fixed sh...

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Abstract

A driving-side pulley includes a cam mechanism that presses a movable sleeve in a first direction by utilizing a relative rotation of the movable sleeve in the normal direction with respect to an axis-line-direction fixed member, the first direction being a direction that has a pressing surface pressed against a corresponding side surface of a belt.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a driving side pulley that is one component of a belt-type continuously variable transmission transmitting a rotational power from a driving shaft to a driven shaft while continuously varying a speed of the rotational power that has been transmitted in accordance with a change of a rotational speed of the driving shaft.[0003]2. Related Art[0004]There has been previously proposed a belt-type continuously variable transmission including a driving side pulley supported by a driving shaft, a driven-side pulley supported by a driven shaft, a V-belt wounded between both the pulleys, and transmitting a rotational power from the driving shaft to the driven shaft while continuously varying a speed of the rotational power, which has been transmitted to the drivers shaft, in accordance with a rotational speed of the driving shaft.[0005]To explain in detail, the driving-side pulley includes a fixed ...

Claims

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Application Information

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Patent Type & AuthorityPatents(United States)
IPC IPC(8): F16H59/00F16H9/18F16H61/00F16H63/00F16H55/56F16H63/06F16H61/21
CPCF16H61/21F16H63/067F16H55/563F16H9/18
InventorTSUKAMOTO, MICHIOINAOKA, TAKAYA
OwnerKANZAKI KOKYUKOKI MFG