CN207111912U - A kind of speed variator reverse gear structure - Google Patents

Abstract

A kind of speed variator reverse gear structure, it is characterised in that：Including bearing after reversing shaft, reversing shaft fore bearing, reversing-gear synchronizer, reverse gear synchronizer ring assembly, needle bearing, reverse gear constant mesh gear, reversing shaft, with reference to gear ring, reversing shaft both ends are separately installed with bearing after reversing shaft fore bearing and reversing shaft, reversing shaft is connected by the needle bearing of centre with reverse gear constant mesh gear, with being become one structure with reference to gear ring by laser welding, reversing-gear synchronizer is connected reverse gear constant mesh gear by reverse gear synchronizer ring assembly with reference to gear ring.Reverse gear shaft and the structure design of reverse gear constant mesh gear decoupling, save space, alleviate gearbox overall weight, while reduce manufacture assembly difficulty；Compared to the rotary inertia that traditional non-decoupling structure design reduces part in drive path, so as to reduce gearbox knocking noise, solves the big problem of knocking noise of gearbox.

Description

A kind of speed variator reverse gear structure

Technical field

It the utility model is related to a kind of automotive transmission reverse gear structure.

Background technology

Recently as the rapid development of auto industry, requirement more and more higher of each vehicle producer to passenger car comfortableness, Simultaneously as country is to discharge and the further raising of fuel economy requirement, in order to meet that the gearshift of client is smoother, mistake Cross more steadily, drive more comfortable and adapt to more road conditions and drive demand, so there is six-speed manual gearbox market to account for Enter.But a pair of gear pair engagements more than five speed gearbox due to six-speed transmission, cause each gear of six-speed transmission to rotate used Amount（It is converted to input shaft rotary inertia）It is bigger than five speed gearbox, so as to cause six-speed transmission matching vehicle knocking noise performance Can be poor；Weight, noise problem are also increasingly paid attention to by auto vendor；So the Structural Design Requirement of six-speed transmission is tighter Gather, weight it is lighter, noise is smaller.Row is commonly used in the trade at present is used to by matching double mass flywheel to improve the rotation of speed changer Amount, solve knocking noise, but because the thickness of double mass flywheel is big, product often due to structure Layout Problem can not design it is double Mass flywheel, and double mass flywheel is non-water-tight, if it is serious to paddle, causes butter to separate out, it is easy to cause internal bullet Spring loses lubrication rigidity and becomes big, gets rusty, and is seriously fracture.

The content of the invention

The purpose of this utility model is to provide a kind of speed variator reverse gear structure, overcomes the percussion of current six-speed transmission to make an uproar The shortcomings that sound is big.

A kind of speed variator reverse gear structure, it is characterised in that：Including reversing shaft, reversing shaft fore bearing, reversing-gear synchronizer, fall Shelves synchronizer ring assembly, needle bearing, reverse gear constant mesh gear, bearing after reversing shaft, pacify respectively with reference to gear ring, reversing shaft both ends Equipped with bearing after reversing shaft fore bearing and reversing shaft, reversing shaft is connected by the needle bearing of centre with reverse gear constant mesh gear, Decoupling design between reversing shaft and reverse gear constant mesh gear, reverse gear constant mesh gear turn into one with combining gear ring by laser welding Body structure, reversing-gear synchronizer is connected by reverse gear synchronizer ring assembly with reference to gear ring, when needing reverse gear function, by stirring down Shelves synchronizer promotes reverse gear synchronizer ring assembly reversing-gear synchronizer is combined with reverse gear constant mesh gear to realize reverse gear function, works as place When some forward, because of reverse gear constant mesh gear and reverse gear decoupler shaft, reverse gear part only has reverse gear constant mesh gear Driven gear can be subtracted with master to engage, because rotating part is reduced, and then reduce the rotary inertia under each gear stages, reach Reduce the purpose of noise.

The utility model has the advantages that：Reverse gear shaft and the structure design of reverse gear constant mesh gear decoupling, save space, subtract Light gearbox overall weight, while reduce manufacture assembly difficulty；Transmission road is reduced compared to traditional non-decoupling structure design The rotary inertia of part on footpath, so as to reduce gearbox knocking noise, solves the big problem of knocking noise of gearbox.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model；

In figure：Reversing shaft 1, reversing shaft fore bearing 2, reversing-gear synchronizer 3, reverse gear synchronizer ring assembly 4, needle bearing 5, fall Shelves constant mesh gear 6, bearing 7 after reversing shaft, with reference to gear ring 8.

Embodiment

The utility model is described in further detail with reference to the accompanying drawings and detailed description：

A kind of speed variator reverse gear structure, it is characterised in that：Including reversing shaft 1, reversing shaft fore bearing 2, reversing-gear synchronizer 3, Bearing 7 after reverse gear synchronizer ring assembly 4, needle bearing 5, reverse gear constant mesh gear 6, reversing shaft, with reference to gear ring 8,1 liang of reversing shaft End is separately installed with bearing 7 after reversing shaft fore bearing 2 and reversing shaft, and reversing shaft 1 is normal by the needle bearing 5 and reverse gear of centre Meshing gear 6 connects, Decoupling design between reversing shaft 1 and reverse gear constant mesh gear 6, and reverse gear constant mesh gear 6 is with combining gear ring 8 Become one structure by laser welding, reversing-gear synchronizer 3 is connected by reverse gear synchronizer ring assembly 4 with reference to gear ring 8, works as needs During reverse gear function, reverse gear synchronizer ring assembly 4 is promoted to make reversing-gear synchronizer 3 and the normal engaging tooth of reverse gear by stirring reversing-gear synchronizer 3 Wheel 6 is combined to realize reverse gear function；When in some forward, because reverse gear constant mesh gear 6 and reversing shaft 1 decouple, fall Shelves part only has reverse gear constant mesh gear 6 to subtract driven gear with main and engage, because rotating part is reduced, and then reduces Rotary inertia under each gear stages, the purpose for reducing noise is reached.

Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to Assert that specific implementation of the present utility model is confined to these explanations.For the ordinary skill of the utility model art For personnel, make some equivalent substitutes or obvious modification without departing from the concept of the premise utility, and performance or Purposes is identical, then should be considered as belonging to the protection domain that claims that the utility model is submitted determine.

Claims (1)

1. A kind of 1. speed variator reverse gear structure, it is characterised in that：Including reversing shaft（1）, reversing shaft fore bearing（2）, reversing-gear synchronizer （3）, reverse gear synchronizer ring assembly（4）, needle bearing（5）, reverse gear constant mesh gear（6）, bearing after reversing shaft（7）, with reference to gear ring （8）, reversing shaft（1）Both ends are separately installed with reversing shaft fore bearing（2）With bearing after reversing shaft（7）, reversing shaft（1）Pass through centre Needle bearing（5）With reverse gear constant mesh gear（6）Connection, reverse gear constant mesh gear（6）With with reference to gear ring（8）Pass through Laser Welding It is connected in one, reversing-gear synchronizer（3）Pass through reverse gear synchronizer ring assembly（4）With with reference to gear ring（8）Connection.