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Torque distributor

A technology for distributing device and driving force, which is applied in the direction of transmission device, friction transmission device, control device, etc., and can solve the problem of not being able to provide and use

Inactive Publication Date: 2014-03-12
NISSAN MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since the above-mentioned existing driving force distribution device keeps the rollers in a state of pressing contact in the radial direction, such as a transfer case for a vehicle, when the two-wheel / four-wheel drive switching function is required , cannot be provided using

Method used

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Embodiment Construction

[0015] Therefore, according to the driving force distribution device of the present invention, the second roller is rotated around the above-mentioned eccentric axis in the direction opposite to the rotation direction of the second roller when it is driven, and from the non-transmission position away from the first roller to the opposite direction to the second roller. When the first roller is displaced to the transmission position of the radial push contact, according to the push contact state (that is, the contact pressure between the rollers according to the contact state), a part of the torque to the main drive wheel is transferred from the first roller Through the transmission of the second roller toward the slave drive wheel, both master and slave drive wheels (four wheels) can be driven.

[0016] On the other hand, when the second roller is turned around the above-mentioned eccentric axis, when it is displaced from the transmission position that is radially pressed again...

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Abstract

A torque distributor includes a friction-drive mechanism having a first roller rotatable together with a first rotary member, partly constituting a torque-transmission path to primary drive wheels, and a second roller rotatable together with a second rotary member, partly constituting a torque-transmission path to secondary drive wheels. Also provided is an eccentric-crank mechanism for revolving the second roller in a direction opposite to a rotation direction of power transmission of the second roller around an eccentric-shaft axis displaced from a second-roller rotation axis to produce a displacement of the second roller from a non-power-transmission position of non-frictional-contact with the first roller to a radially-loaded power-transmission position of frictional-contact with the first roller. Although the friction-drive type is used, the torque distributor enables torque-distribution-control mode switching between them, while ensuring high-precision torque-distribution control by avoiding a polarity of moment acting on a rotational-position-control system for an eccentric crank from being reversed.

Description

technical field [0001] The present invention relates to an improvement technique of a driving force distribution device used as a transfer case of a four-wheel drive vehicle. Background technique [0002] As a driving force distribution device, for example, a device described in Patent Document 1 is conventionally known. The driving force distribution device described in this document distributes the driving force based on the radial pressing force between the rollers. [0003] Patent Document 1: (Japanese) Unexamined Patent Publication No. 2002-349653 [0004] However, since the above-mentioned existing drive force distribution device keeps the rollers in a state of pressing contact in the radial direction, such as a transfer case for a vehicle, when the two-wheel / four-wheel drive switching function is required , cannot be provided for use. Contents of the invention [0005] In view of the above circumstances, the present invention aims to provide a drive that can cont...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H13/04B60K17/344
CPCF16H13/04F16H13/10B60K17/35
Inventor 山藤胜彦森淳弘
Owner NISSAN MOTOR CO LTD