Power transmission chain and power transmission device using the same

A power transmission and power technology, applied in the field of power transmission device and power transmission chain, can solve the problems of reduced noise reduction, disappearance, deterioration of chain durability, etc., to reduce polygonal vibration, suppress peak sound pressure level, reduce The effect of small SPL peaks

Inactive Publication Date: 2006-11-15
JTEKT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, in the aforementioned invention described in JP Unexamined Publication No. 63-53337, there is a disadvantage that long chain pins are more prone to concentrated wear than short chain pins.
In this case, since the long chain pins are prone to intensive wear and become shorter, the length difference will disappear, so the noise reduction effect will be reduced during use, and a sufficient effect cannot be obtained.
In addition, since the force acting on the long chain pins is greater than that of the short chain pins, the load is concentrated on the long chain pins, resulting in deterioration of the durability of the chain
In addition, in the chain assembly process, it is necessary to manage chain pins with different lengths or to assemble them separately, which increases the burden of assembly and increases the cost

Method used

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Embodiment Construction

[0051] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0052] figure 1 It is a perspective view typically showing the configuration of main parts of a chain for a chain-type continuously variable transmission (hereinafter referred to as "chain") according to an embodiment of the first invention of the present invention. The chain 1 involved in this embodiment is in the shape of an endless belt as a whole, and is composed of the following parts: a plurality of metal chain links 2; a plurality of metal chain pins 3 for interconnecting these chain links 2; These chain pins 3 are slightly shorter narrow strips 5 . The links 2 and the pins 3 are formed of metal such as bearing steel, for example. figure 1 In , the description of the links near the approximate center in the width direction of the chain 1 is partially omitted.

[0053] Such as figure 1 , Image 6 and Figure 7 As shown, each chain link 2 has an outer shape i...

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Abstract

A power transmission chain capable of effectively reducing occurring sound and a power transmission device using the chain. The power transmission chain has links having through-holes and pins inserted through the through-holes to connect the links to each other. All the pins have substantially the same length in the length direction and include plural kinds of pins having different rigidity relative to forces acting in the length direction of the pins. Further, the track of the position of contact between a pin and a strip is an involute of a circle, and two or more kinds of sets of pins and strips having different base circle radii for the involute are formed.

Description

technical field [0001] The present invention relates to a power transmission chain used in a chain-type continuously variable transmission of a vehicle, etc., and a power transmission device using the power transmission chain. Background technique [0002] As an automotive continuously variable transmission (CVT: Continuously Variable Transmission), for example, there is a transmission that has a drive pulley provided on the engine side, a driven pulley provided on the drive pulley side, and a ring-shaped pulley installed between the two pulleys. Ribbon chain. As the power transmission chain, there is a chain having a plurality of links and a plurality of pins connecting the links with each other. In this so-called chain-type continuously variable transmission, the traction force is generated by the contact friction acting between the sheave surface composed of two conical surfaces arranged approximately opposite to each other on the inner side of each pulley and the chain ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16G5/18F16H9/24
Inventor 镰本繁夫福井伸树安原伸二北村和久
Owner JTEKT CORP
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