CN105650143A

CN105650143A - Synchronizer locking ring

Info

Publication number: CN105650143A
Application number: CN201510929498.4A
Authority: CN
Inventors: 宋伟; 罗大国; 陈勇; 王瑞平
Original assignee: Zhejiang Geely Holding Group Co Ltd; Ningbo Shangzhongxia Automatic Transmission Co Ltd
Current assignee: Ningbo Shangzhongxia Automatic Transmission Co Ltd
Priority date: 2015-12-14
Filing date: 2015-12-14
Publication date: 2016-06-08

Abstract

The invention relates to the field of automobile driving devices and aims at providing a synchronizer locking ring. The synchronizer locking ring comprises an outer ring provided with outer teeth and also comprises a frustum-shaped inner ring, a frustum-shaped middle ring and a frustum-shaped inner hole, wherein the frustum-shaped middle ring sleeves the outside of the frustum-shaped inner ring; the frustum-shaped inner hole sleeves the outside of the frustum-shaped middle ring; the small end of the frustum-shaped inner hole is uniformly distributed with a plurality of convex blocks; the outer side of each convex block is provided with a clamping slot connected with an inner side surface and an end surface; one end of the outer ring is uniformly distributed with clamping blocks same as the convex blocks in amount; each clamping block extends into one of the clamping slots and is narrower than each clamping slot; and the large end of the frustum-shaped middle ring is uniformly distributed with a plurality of inserting blocks. During synchronous operation of the synchronizer locking ring, inner teeth of a sleeve are conveniently inserted to the outer teeth of the locking ring, and the outer teeth of the locking ring are not easily worn.

Description

Synchronizer lock ring

Technical field

The present invention relates to automotive trannsmission system field, especially a kind of synchronizer lock ring.

Background technology

Chinese Patent Application No.: a kind of synchronizer of the disclosure of the invention of 201210178097.6, comprise the tooth hub being set on transmission shaft, it is evenly distributed in multiple radial slot along described tooth hub, it is provided with slide block in described radial slot, and described tooth hub is arranged with tooth cover, the axial end of described tooth hub is connected with synchronous ring, wherein, is provided with whippy structure at the axial end place of described synchronous ring. The deficiency that when lock ring of traditional synchronizer exists synchronous operation, the external tooth external tooth that is inconvenient and lock ring of the internal tooth insertion lock ring of sleeve is easy to wear, therefore, when designing a kind of synchronous operation, the internal tooth of sleeve inserts the external tooth convenience of lock ring and the nonabradable synchronizer lock ring of external tooth of lock ring, becomes problem demanding prompt solution.

Summary of the invention

It is an object of the invention to the deficiency that the external tooth of the internal tooth of sleeve when the lock ring in order to overcome current synchronizer exists synchronous operation insertion lock ring external tooth that is inconvenient and lock ring is easy to wear, it is provided that during a kind of synchronous operation, the internal tooth of sleeve inserts the external tooth convenience of lock ring and the nonabradable synchronizer lock ring of external tooth of lock ring.

The concrete technical scheme of the present invention is:

A kind of synchronizer lock ring, comprises the outer shroud being provided with external tooth; Described synchronizer lock ring also comprises taper type inner ring, is set in the taper type outside taper type inner ring ring, is equipped with hole in the taper type being set in taper type taper type outside ring outward; The little end of taper type inner ring is laid with some projections; The outer side of each projection is provided with card groove through with interior side and end face respectively; One end of outer shroud is laid with the number card block identical with projection number; The width that each card block stretches into a card groove and card block is less than the width of card groove; In taper type, the big end of ring is laid with some slotting blocks. When this synchronizer lock ring uses, three slotting blocks respectively insert that a transmitting gear end face corresponding thereto is provided with and with the slotting block hole of slotting block running fit, make not produce radial beat during ring axial motion in taper type, thus make outer shroud and taper type inner ring be easy to radial location; During synchronous operation, the external tooth of lock ring is servo-actuated when the internal tooth of sleeve inserts; During this synchronizer lock ring synchronous operation, the external tooth external tooth that is convenient and lock ring of the internal tooth insertion lock ring of sleeve is not easy to wear.

As preferably, the cross-sectional shape of described card block is rectangle;The cross-sectional shape of card groove is rectangle; Two base angles place of card groove is respectively provided with a tolerant groove. Two base angles place of card groove is respectively provided with a tolerant groove, makes card block side and card groove side increase thrust surface and transmits more high pulling torque, greatly reduces failure risk.

As preferably, the cross-sectional shape of described tolerant groove is circular arc. Stress can be reduced.

As preferably, the outside of described taper type inner ring is arranged with friction ring. Frictional force can be increased.

Compared with prior art, the invention has the beneficial effects as follows: during this synchronizer lock ring synchronous operation, the external tooth external tooth that is convenient and lock ring of the internal tooth insertion lock ring of sleeve is not easy to wear. Two base angles place of card groove is respectively provided with a tolerant groove, makes card block side and card groove side increase thrust surface and transmits more high pulling torque, greatly reduces failure risk. The cross-sectional shape of tolerant groove is that circular arc can reduce stress. The outside of taper type inner ring is arranged with friction ring can increase frictional force.

Accompanying drawing explanation

Fig. 1 is a kind of structural representation of the present invention;

Fig. 2 is the A direction view of Fig. 1;

Fig. 3 is the structural representation of outer shroud;

Fig. 4 is the structural representation of ring in taper type;

Fig. 5 is the structural representation of taper type inner ring;

Fig. 6 is the vertical view of Fig. 5.

In figure: ring-3 in hole-12, card block-13, taper type inner ring-2, projection-21, card groove-22, tolerant groove-23, friction ring-24, taper type in outer shroud-1, external tooth-11, taper type, insert block-31.

Embodiment

Below in conjunction with shown in accompanying drawing, the present invention is described further.

As shown in accompanying drawing 1 to accompanying drawing 6: a kind of synchronizer lock ring, comprises the outer shroud 1 being provided with external tooth 11, taper type inner ring 2, being set in the taper type outside taper type inner ring 2 ring 3, outer shroud 1 is provided with in the taper type being set in taper type taper type outside ring 3 hole 12; The little end of taper type inner ring 2 is laid with three projections 21; The outer side of each projection 21 is provided with card groove 22 through with interior side and end face respectively; One end of outer shroud 1 is laid with the number card block 13 identical with projection 21 number; The width that each card block 13 stretches into a card groove 22 and card block 13 is less than the width of card groove 22; In taper type, the big end of ring 3 is laid with three slotting blocks 31.

The cross-sectional shape of described card block 13 is rectangle; The cross-sectional shape of card groove 22 is rectangle; Two base angles place of card groove 22 is respectively provided with a tolerant groove 23. The cross-sectional shape of described tolerant groove 23 is circular arc.

The outside of described taper type inner ring 2 is arranged with friction ring 24. The material of friction ring 24 is semimetal friction material.

When this synchronizer lock ring uses, three slotting blocks 31 respectively insert that a transmitting gear end face corresponding thereto is provided with and with the slotting block hole of slotting block 31 running fit, make not produce radial beat during ring 3 axial motion in taper type, thus make outer shroud 1 and taper type inner ring 2 be easy to radial location.

The invention has the beneficial effects as follows: during this synchronizer lock ring synchronous operation, the external tooth external tooth that is convenient and lock ring of the internal tooth insertion lock ring of sleeve is not easy to wear. Two base angles place of card groove is respectively provided with a tolerant groove, makes card block side and card groove side increase thrust surface and transmits more high pulling torque, greatly reduces failure risk. The cross-sectional shape of tolerant groove is that circular arc can reduce stress. The outside of taper type inner ring is arranged with friction ring can increase frictional force.

It is apparent to one skilled in the art that the present invention can change into multiple mode, and such change is not thought and departed from the scope of the present invention. All such apparent amendments of the technician to described field, will be included within the scope of this claim.

Claims

1. a synchronizer lock ring, comprises the outer shroud (1) being provided with external tooth (11);It is characterized in that, described synchronizer lock ring also comprises taper type inner ring (2), is set in the taper type outside taper type inner ring ring (3), is equipped with in the taper type being set in taper type taper type outside ring outward hole (12); The little end of taper type inner ring is laid with projection (21); The outer side of projection is provided with card groove (22) through with interior side and end face respectively; One end of outer shroud is laid with the number card block (13) identical with projection number; The width that each card block stretches into a card groove and card block is less than the width of card groove; In taper type, the big end of ring is laid with slotting block (31).

2. synchronizer lock ring according to claim 1, is characterized in that: the cross-sectional shape of described card block is rectangle; The cross-sectional shape of card groove is rectangle; Two base angles place of card groove is respectively provided with a tolerant groove (23).

3. synchronizer lock ring according to claim 2, is characterized in that: the cross-sectional shape of described tolerant groove is circular arc.

4. synchronizer lock ring according to claim 1 or 2 or 3, is characterized in that: the outside of described taper type inner ring is arranged with friction ring (24).