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Force increasing device of gearbox

A technology of operating device and boosting device, applied in fluid pressure actuating device, transmission device control, elements with teeth, etc., can solve problems such as unfavorable shifting feeling and so on

Inactive Publication Date: 2004-04-28
NISSAN DIESEL MOTOR CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the impact force is transmitted to the shift lever through the input shaft, which is not conducive to the shift feeling

Method used

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  • Force increasing device of gearbox
  • Force increasing device of gearbox
  • Force increasing device of gearbox

Examples

Experimental program
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Effect test

Embodiment Construction

[0046] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

[0047] figure 1 Shows the general configuration of a power shifter and an operating force transmission system mounted on a vehicle.

[0048] The shift operating force (input shift force) applied to the shift operating lever 10 is transmitted by the link mechanism 14 to the input shaft 18 of the power shift device 16, and the input shaft 18 is shifted under the action of the shift operating force. Axis direction action. The link mechanism 14 is constituted by a plurality of links 14 a to 14 c interposing the rubber damper 12 . The power shift device 16 increases the input operating force input to the input shaft 18 and from the shift operating rod 10 through the action of the working fluid, that is, high-pressure air, to become an output operating force slightly proportional to the input operating force. The force passes through the shift shaft 20 to rotate th...

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Abstract

A servo operation apparatus for a transmission comprising an input shaft to which the shift-change operation force is mechanically transmitted from a shift lever, a servo unit for boosting the shift-change operation force by feeding a working fluid, and a valve device which feeds the working fluid to, or drains the working fluid from, the servo unit depending upon the shift-change operation of the shift lever, wherein provision is made of an working fluid feed control means which feeds the working fluid in such a manner that the pressure of the working fluid in the servo unit is raised with a steep gradient in the former half until a predetermined initially raised pressure value is reached and, thereafter, is raised in the latter half with a gradient less steep than that of said former half. Or, when the apparatus is equipped with a reaction device which imparts reaction to the shift-change operation force transmitted to the input shaft by utilizing the working fluid, provision is made of a working fluid feed control means which feeds the working fluid in such a manner that the rise of the pressure of the working fluid in the reaction device is delayed behind the rise of the pressure of the working fluid in the servo unit.

Description

[0001] This application is a divisional application of Chinese patent application 97109923.5 (application date: March 28, 1997; title of invention: booster operating device for transmission). technical field [0002] The invention relates to a transmission booster operating device which transmits the gearshift operation force boost to the transmission, and in particular relates to a technique for improving the shifting feeling. Background technique [0003] In the prior art, in the transmission of large vehicles such as trucks, in order to reduce the shifting operation force, a booster operating device (hereinafter referred to as a power shifting device) using a working fluid (high-pressure air) is installed to reduce the shifting force. Operating force, especially when a large operating force is required, the shifting operating force is reduced (see Japanese Patent Laid-Open No. Hei 3-93650 and Verified Laid-Open No. Hei 3-93651). [0004] The existing power shifting device...

Claims

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Application Information

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IPC IPC(8): F15B9/12F16H61/30F16J15/32F16J15/3232F16J15/3236
CPCF15B9/12F16H61/30F16H2061/301
Inventor 计盛启一武藤仁今里和成
Owner NISSAN DIESEL MOTOR CO
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