A shifting system

A combination of gear shifting and external spline technology, which is applied in the field of shifting systems of automobile transfer cases, and can solve problems such as failure to shift gears, slipping and loosening of internal and external splines, and gear disengagement

Inactive Publication Date: 2010-02-10
中国航天三江集团公司特种车辆技术中心
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Problems solved by technology

The shifting system adopts the second method, although the shifting performance is improved compared with the first one, but when the arc-shaped key head is in contact, the sliding direction of the inner and outer splines at the contact point and the angle of the force are too large large, thus limiting the increase in shift portability
Therefore, in the existing shift system, the end face teeth often have

Method used

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Embodiment approach

[0040] Drive pinion shifting spline 1, input shaft shifting outer spline 2, shifting combination sleeve inner spline 3, active large gear shifting outer spline 4 adopt splines of the same specification (module, number of teeth are the same).

[0041] And the outer heads of the outer splines 1 of the driving pinion and the outer splines 4 of the driving gear shift are retracted, and the side of the outer head of the outer splines 1 of the driving pinion and the side of the outer splines 1 of the driving pinion form an angle of δ The angle between the outer head side of the external spline 4 of the active large gear and the side of the external spline 4 of the active large gear forms an angle of δ. The inner spline is divided into two symmetrical parts. The left and right inner splines are respectively retracted at the two sides near the end face. The two sides of the head form an angle with the two sides of the inner spline 3 of the shift coupling sleeve respectively. is the in...

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Abstract

The invention relates to a power conversion device of a mechanical transmission system, more particularly to a shifting system of an automobile transfer case. In the shifting system, drive pinion external splines, input shaft shifting external splines, shifting engagement sleeve internal splines and drive gearwheel external splines all employ the splines with the same modulus and teeth number, tooth crests of the engagement sleeve internal splines, the drive pinion external splines and the drive gearwheel external splines shrink inwards, the end face line, from the tooth crest to tooth root, of each spline positioned on the end face is processed from a shape of minus sign into a shape of reversed V, and the shifting engagement sleeve internal splines, the drive pinion shifting external splines, the input shaft shifting external splines and the drive gearwheel shifting external splines are regulated in the thickness of tooth thereof in the direction of axis. The head of the spline is designed with particular angle and shape, which can ensure fast positioning during the bonding of the splines, without the phenomenon of 'gear sliding' and 'out of gear'.

Description

technical field [0001] The invention relates to a power conversion device of a mechanical transmission system, in particular to a gear shifting system of an automobile transfer case. Background technique [0002] The existing shifting system of the automobile transfer case processes the splines of the shifting system in the following two ways: [0003] 1. The most common method is that the internal and external splines of the shifting system adopt a large tooth width and narrow tooth thickness structure in the tooth width direction. circle; [0004] 2. For the inner and outer splines of the gear shifting system, long and short tooth spacing structures are adopted in the tooth length direction, and the heads of the long teeth of the outer splines or the long teeth of the inner splines of the gear shifting system can also be processed into arc shapes. [0005] Although these two methods are simple and economical to process, the shifting performance is not good. The main reas...

Claims

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Application Information

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IPC IPC(8): F16H55/17F16H35/06
Inventor 严欣贤唐喆周跃良郑建辉王新郧苏福祥白志成
Owner 中国航天三江集团公司特种车辆技术中心
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