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Multi-cone coupling synchronizer

A synchronizer and coupling technology, which is applied in the field of vehicle gearboxes, can solve the problems of loud knocking sound, increased frictional unlocking force, and difficulty in unlocking, and achieve the best synchronization effect, reduce impulse and reduce knocking sound. Effect

Active Publication Date: 2019-03-12
HAIMA AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1) Compared with the single-cone synchronizer, the multi-cone coupling synchronizer increases the synchronization capacity, but because multiple friction surfaces work at the same time, the friction unlocking force increases. At the end of the synchronization process, the middle steel ring is not easy to unlock , resulting in a sense of steps in the shifting process, and even causing the shifting to not be in place, resulting in disengagement
[0006] 2) Due to the addition of the intermediate steel ring in the multi-cone coupling synchronizer, the intermediate steel ring will collide with the gear mating part during the operation of the transmission to produce a large knocking sound, which will affect the NVH quality of the vehicle

Method used

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Examples

Experimental program
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Effect test

no. 1 example

[0037] please if image 3 As shown, the multi-cone coupled synchronizer mainly includes socketed: outer gear ring 1 , inner gear ring 2 and intermediate steel ring 3 located between the outer gear ring 1 and the inner gear ring 2 .

[0038] The middle steel ring 3 enters the outer gear ring 1 from the first side of the outer gear ring 1, and the second side of the outer gear ring 1 is provided with at least one block 11 (three blocks are shown in the figure, but Not limited thereto), the block 11 extends along the radial direction of the outer gear ring 1 to limit the inner gear ring 2 in the circumferential direction.

[0039] In a preferred embodiment, please Figure 4 As shown, the stopper 11 is provided with an elastic mechanism 12 facing the direction of the middle steel ring 3 for pushing the middle steel ring 3 . No matter what the synchronizer of the present invention adopts is a two-cone, three-cone or multi-cone coupled synchronizer, the elastic mechanism 12 can in...

no. 2 example

[0046] please if Figure 7 and Figure 8 As shown, at least one middle steel ring pawl 31 is fixedly connected to the circumference of the first side of the middle steel ring 3 facing the inner gear ring 1 (three middle steel ring pawls are shown in the figure, but it is not taken as a limit). The middle steel ring pawl 31 of the middle steel ring 3 cooperates with the ring gear pawl positioning groove 41 on the ring gear 4. When the outer gear ring 1 cooperates with the inner gear ring 2 and the meshing sleeve respectively to achieve synchronous rotation, the middle Steel ring 3 also cooperates with ring gear 4 and rotates synchronously. At this time, the middle steel ring pawl 31 of the middle steel ring 3 is embedded in the ring gear pawl positioning groove 41 on the ring gear 4 .

[0047] However, there are gaps in the circumferential and axial directions in the cooperation of the above-mentioned two groups of synchronous rotations (this gap is necessary, and its size i...

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Abstract

The invention provides a synchronizer. The synchronizer comprises outer tooth rings, an inner tooth ring and a middle steel ring, all of which are sleeved together. The middle steel ring is arranged inside the outer tooth rings. The outer tooth rings are provided with at least one block used for limiting the inner tooth ring. The block is provided with an elastic mechanism used for pushing and ejecting the middle steel ring. The synchronizer can be combined with a tooth ring. The middle steel ring and / or the tooth ring are / is provided with a buffer mechanism used for reducing gaps. The synchronizer has following beneficial effects: by increasing axial elastic force among inner and outer tooth rings of a two-cone coupling synchronizer, a three-cone coupling synchronizer and a multi-cone synchronizer and the middle steel ring, a locking ring (the outer tooth ring, the middle steel ring and the inner tooth ring) can be smoothly released after a synchronizing process; negative phenomena such as a stepping sense, difficulty in shifting gears and gear disengage are improved; the increased axial force enables the inner tooth ring, the outer tooth ring and the middle steel ring to be relatively pressed so that knocking sound of a gearbox is reduced; the middle steel ring and / or the tooth ring and / is provided with the buffer mechanism used for reducing gaps such that impulse between the middle steel ring and the tooth ring is reduced and knocking sound generated through collision is reduced.

Description

technical field [0001] The invention relates to the field of a vehicle gearbox, in particular to a synchronizer used in the gearbox. Background technique [0002] Existing synchronizers are mostly applied to single-cone synchronizers and multi-cone synchronizers, and the synchronization effect of multi-cone synchronizers is better than that of single-cone synchronizers. The working principle of the multi-cone synchronizer is: the axial pressure is generated by the extrusion of the inclined surface of the inner teeth of the meshing sleeve and the inclined surface of the outer teeth of the outer gear ring of the synchronizer. After the friction surface is subjected to axial pressure, friction is generated to obtain synchronization. In the multi-cone synchronizer, the multi-cone coupling type is mostly used, and the synchronization effect is the best. [0003] Multi-cone coupling synchronizers mainly include two-cone coupling synchronizers and three-cone coupling synchronizers...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D23/02
Inventor 王国增朱宏林王磊李现伟于滕达
Owner HAIMA AUTOMOBILE CO LTD