CN210050218U - Synchronizer structure of automobile transmission - Google Patents
Synchronizer structure of automobile transmission Download PDFInfo
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- CN210050218U CN210050218U CN201920579453.2U CN201920579453U CN210050218U CN 210050218 U CN210050218 U CN 210050218U CN 201920579453 U CN201920579453 U CN 201920579453U CN 210050218 U CN210050218 U CN 210050218U
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Abstract
The utility model provides a synchronizer structure of an automobile transmission, the spline tooth socket of a gear hub is divided into a large tooth socket and a small tooth socket according to the width, a large spline tooth and a small spline tooth with different tooth thicknesses are correspondingly arranged along the inner ring of a gear sleeve sliding along the gear hub, in addition, a short spline tooth with the same tooth thickness as the large spline tooth but smaller tooth height than the large spline tooth is also arranged, wherein, the involute tooth surfaces at the two ends of the large spline tooth with large tooth thickness and the short spline tooth are provided with inverse cone shapes, when the gear sleeve is engaged with engaging teeth along the axial direction, the tooth side matching length of the small spline tooth without inverse cone on the gear sleeve and the gear hub spline is larger than the tooth side matching length of the large spline tooth with inverse cone on the gear sleeve and the spline tooth side matching length of the short spline tooth and the gear hub, a plurality of groups of small spline teeth without inverse cone shapes are uniformly distributed on the gear sleeve along the circumferential direction, thus, the swing amount of the gear sleeve relative to the gear hub when the gear sleeve and the engaging teeth transmit the torque fluctuation, the gear sleeve and the engaging teeth can be prevented from disengaging to cause gear shift of the transmission to a great extent when transmitting torque.
Description
Technical Field
The utility model belongs to the technical field of automotive transmission, a automotive transmission synchronizer structure is related to, is applicable to the synchronizer structure that manual transmission, mechanical type automatic gearbox and two clutches derailleur and hybrid power electromechanical coupling etc. actuators used.
Background
The synchronizer is widely applied to a Manual Transmission (MT), an Automatic Mechanical Transmission (AMT) and a dual-clutch automatic transmission (DCT), and can realize quick and smooth gear shifting of the transmission. When the spline connection of the synchronizer gear hub and the gear sleeve of the existing structure adopts the gear side centering, the problem of large swinging amount exists after the gear sleeve is geared in place, and the transmission is easy to be out of gear.
Disclosure of Invention
The utility model provides an automobile transmission synchronous ware structure, this structure can restrict the axial oscillation volume when transmission power after the synchronous ware tooth cover is put into gear well, when guaranteeing that the derailleur does not take off the fender, avoid appearing the jamming of shifting, shift the ride comfort not good scheduling problem.
The utility model discloses an adopt following technical scheme to realize:
a synchronizer structure of an automobile transmission comprises a gear hub, a gear sleeve, a sliding block, a single-cone synchronous ring, a three-cone synchronous ring outer ring, a three-cone synchronous ring middle ring, a three-cone synchronous ring inner ring, a first engaging tooth and a second engaging tooth; the first joint teeth and the second joint teeth are respectively welded with the gear gears, and the inner conical surface of the synchronizing ring and the outer conical surface of the joint teeth of the first joint teeth are arranged in a clearance way and can form a pair of friction pairs under the action of axial force; the inner conical surface of the outer ring of the three-cone synchronizing ring and the outer conical surface of the middle ring of the three-cone synchronizing ring form a pair of friction pairs, the inner conical surface of the middle ring of the three-cone synchronizing ring and the outer conical surface of the inner ring of the three-cone synchronizing ring form a pair of friction pairs, and the inner conical surface of the inner ring of the three-cone synchronizing ring and the outer conical surface of the gear corresponding to the second joint tooth form a pair of friction pairs; the external spline of the gear hub is connected with the internal spline of the gear sleeve to transmit torque, and the gear sleeve can slide relative to the gear hub along the axial direction of the spline and can be combined with the first engaging tooth; the gear hub is in interference connection with a transmission shaft of the transmission through an involute spline, the synchronizing ring is embedded into 3 grooves which are distributed on the gear hub at intervals of 120 degrees in the circumferential direction through three clamping pins and is connected with the gear hub to realize common rotation, 3 spline teeth which are arranged among the internal splines of the gear sleeve at intervals of 120 degrees in the circumferential direction are respectively provided with a slider groove, and 3 sliders are respectively positioned in 3 slider grooves of the gear sleeve by virtue of own springs and steel balls; have on the first joint tooth can with the external spline tooth of the spline tooth meshing of tooth cover, have bellied spacing boss terminal surface on the external spline tooth, have on the tooth cover and play the spacing terminal surface to first joint tooth limiting displacement with spacing boss terminal surface cooperation, its characterized in that:
spline teeth of an internal spline of the gear sleeve are divided into large spline teeth, small spline teeth and short spline teeth, the tooth thickness of the large spline teeth is the same as that of the short spline teeth, the tooth thickness of the small spline teeth is smaller than that of the large spline teeth and the short spline teeth, the tooth height of the short spline teeth is smaller than that of the large spline teeth and the small spline teeth, involute tooth surfaces at two ends of the large spline teeth are axially provided with inverse cone shapes, the involute tooth surfaces at two ends of the short spline teeth are axially provided with inverse cone shapes, spline teeth where 3 slider grooves of the gear sleeve are located are the short spline teeth, 2 spline teeth at the left side of the short spline teeth where each slider groove is located are also the short spline teeth, 2 spline teeth at the right side of the short spline teeth where each slider groove is also the short spline teeth, spline teeth adjacent to the outermost short spline teeth in the 2 spline teeth at the left side of each slider groove are also the large spline teeth, and 2 spline teeth at the left side of the large spline teeth are the small spline teeth, the spline teeth adjacent to the outermost short spline tooth in the 2 short spline teeth on the right side of each sliding block groove are large spline teeth, the 2 spline teeth on the right side of each large spline tooth are small spline teeth, all the other spline teeth except the short spline teeth, the large spline teeth adjacent to the short spline teeth and the small spline teeth are large spline teeth, the spline tooth grooves of the external splines between the 3 grooves on the gear hub are divided into large tooth grooves corresponding to the large spline teeth and small tooth grooves corresponding to the small spline teeth, the large spline teeth and the short spline teeth of the gear sleeve are meshed with the large tooth grooves on the gear hub, and the small spline teeth of the gear sleeve are meshed with the small tooth grooves on the gear hub.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a synchronizer structure of automobile speed changer, the spline tooth socket of the gear hub outer lane is divided into big tooth socket and little tooth socket according to the width two kinds, big spline tooth and little spline tooth that the tooth thickness is different are equipped with correspondingly along gliding tooth cover inner circle of gear hub, in addition there is a tooth thickness and big spline tooth the same but the short spline tooth that the tooth height is less than big spline tooth, wherein the involute flank at the both ends of big spline tooth and short spline tooth that the tooth thickness is big on the gear cover is equipped with the shape of falling cone, the involute flank at the both ends of little spline tooth that the tooth thickness is little on the gear cover does not have the shape of falling cone along the axial, this structure makes the gear cover along the axial engage with first engaging tooth or second engaging tooth when joining in place, little spline tooth that does not have the back cone on the gear cover is greater than the big spline tooth that has the back cone on the gear cover and the tooth side fit length of the tooth of the spline of short spline tooth and gear hub, the tooth that there are equipped with a plurality of groups such little spline that do not have the shape of falling cone along the circumferencial direction, therefore, the swinging amount of the gear sleeve relative to the gear hub when the gear sleeve and the first engaging tooth or the second engaging tooth transmit torque fluctuation can be effectively reduced, and the gear sleeve and the first engaging tooth or the second engaging tooth are prevented from being disengaged to a great extent to cause gear shift of the transmission.
Since the technical scheme is used, the utility model discloses can effectively reduce derailleur off-gear probability, guarantee that the tooth cover slides freely along the tooth hub, security and the ride comfort of shifting when having improved the vehicle and traveling.
Drawings
The invention will be further described with reference to the accompanying drawings:
fig. 1 is an axial sectional view of an assembly structure of the present invention;
FIG. 2 is a schematic view of the assembly of the present invention on the shaft side;
fig. 3 is an axial schematic view of a gear hub according to the present invention;
fig. 4 is a schematic structural view of a gear sleeve in the present invention;
fig. 5 is an axial schematic view of a gear sleeve according to the present invention;
fig. 6 is a schematic structural view of a first engaging tooth according to the present invention;
FIG. 7 is an axial cross-sectional view of the assembly structure of the present invention when the gear sleeve is in place;
fig. 8 is a schematic view of the spline fit between the hub, sleeve and first engagement tooth of the present invention when the sleeve is in place;
in the figure: 1. the gear hub comprises a gear hub body, 2 gear sleeves, 3 sliding blocks, 4 synchronizing rings, 5 three-cone synchronizing ring outer rings, 6 three-cone synchronizing ring middle rings, 7 three-cone synchronizing ring inner rings, 8 first engaging teeth, 9 second engaging teeth, 11 large tooth grooves, 12 small tooth grooves, 14 grooves, 21 large spline teeth, 22 small spline teeth, 23 low spline teeth, 24 sliding block grooves, 25 limiting end faces, 81 external spline teeth, 82 engaging tooth external conical faces, 811 limiting boss end faces, A gear gears of the first engaging teeth and B gear gears of the second engaging teeth.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
a synchronizer structure of an automobile transmission comprises a gear hub 1, a gear sleeve 2, a sliding block 3, a single-cone synchronous ring 4, a three-cone synchronous ring outer ring 5, a three-cone synchronous ring middle ring 6, a three-cone synchronous ring inner ring 7, first joint teeth 8 and second joint teeth 9, wherein the first joint teeth 8 and the second joint teeth 9 are respectively connected with gear gears of the three-cone synchronous ring outer ring and the three-cone synchronous ring inner ring through welding, namely the first joint teeth 8 are welded with a first joint tooth gear A, and the second joint teeth 9 are welded with a second joint tooth gear B. The inner conical surface of the synchronizing ring 4 and the outer conical surface 82 of the first engaging tooth 8 are arranged in a clearance and can form a pair of friction pairs under the action of axial force; the inner conical surface of the outer ring 5 of the three-cone synchronous ring and the outer conical surface of the middle ring 6 of the three-cone synchronous ring form a pair of friction pairs, the inner conical surface of the middle ring 6 of the three-cone synchronous ring and the outer conical surface of the inner ring 7 of the three-cone synchronous ring form a pair of friction pairs, and the inner conical surface of the inner ring 7 of the three-cone synchronous ring and the conical surface of the gear wheel corresponding to the second joint tooth 9 also form a pair of friction pairs; the external spline of the gear hub 1 is connected with the internal spline of the gear sleeve 2 to transmit torque, and the gear sleeve 2 can slide relative to the gear hub 1 along the axial direction of the spline and can be engaged with the first engaging teeth 8; the gear hub 1 is in interference connection with a transmission shaft of a transmission through an involute spline, the synchronizing ring 4 is embedded into 3 grooves 14 distributed on the gear hub 1 at intervals of 120 degrees in the circumferential direction through three clamping pins and is connected with the gear hub 1 to realize common rotation, 3 spline teeth arranged at intervals of 120 degrees in the circumferential direction among the internal splines of the gear sleeve 2 are respectively provided with a slider groove 24, and 3 sliders 3 are respectively positioned in the 3 slider grooves 24 of the gear sleeve 2 by virtue of own springs and steel balls; the first joint tooth 8 is provided with external spline teeth 81 capable of being meshed with the spline teeth of the gear sleeve 2, the external spline teeth 81 are provided with convex limiting boss end faces 811, the gear sleeve 2 is provided with limiting end faces 25 which are matched with the limiting boss end faces 811 to limit the first joint tooth 8, when the gear sleeve 2 moves rightwards along the axial direction under the action of shifting force, the sliding block 3 is driven to slide rightwards together until the sliding block 3 pushes the synchronizing ring 4 to be in contact with the joint tooth conical faces 82 of the first joint tooth 8, then the gear sleeve 2 presses down steel balls and springs of the sliding block 3 to further move rightwards under the action of shifting force to push the synchronizing ring 4 to be in friction synchronization with the joint tooth conical faces 82 of the first joint tooth 8, further synchronization of rotating speeds of the gear and a transmission shaft is achieved, the synchronizer gear sleeve 2 is enabled to be smoothly meshed with the external spline teeth 81 of the first joint tooth 8 when the transmission is in gear shifting, and finally the limiting end faces 25 of the gear sleeve 2 are in contact with the limiting boss end faces 811 of the first joint tooth 8 to complete And (5) engaging gears. Similarly, when the gear sleeve 2 slides leftwards under the action of the shifting force, the shifting process and the principle are similar to those of rightward sliding, and the only difference is that a three-cone synchronous ring is adopted in the left gear, so that the synchronous capacity is larger, and the gear shifting is faster under the same working condition.
The spline teeth of the internal spline of the gear sleeve 2 are divided into large spline teeth 21, small spline teeth 22 and short spline teeth 23, the tooth thickness of the large spline teeth 21 and the short spline teeth 23 is the same, the tooth thickness of the small spline teeth 22 is smaller than the tooth thickness of the large spline teeth 21 and the short spline teeth 23, the tooth height of the short spline teeth 23 is smaller than the tooth height of the large spline teeth 21 and the small spline teeth 22, the involute tooth surfaces at both ends of the large spline teeth 21 are axially provided with inverse cone shapes 26, the involute tooth surfaces at both ends of the short spline teeth 23 are axially provided with inverse cone shapes 26, the spline teeth where 3 slider grooves 24 of the gear sleeve 2 are located are all the short spline teeth 23, and 2 spline teeth at the left side of the short spline teeth 23 where each slider groove 24 is located are also the short spline teeth 23, 2 spline teeth at the right side of the short spline teeth 23 where each slider groove 24 is located are also the short spline teeth 23, and the spline teeth adjacent to the outermost short teeth 23 in the 2 short spline teeth at the left side of each slider groove 24 are the large spline teeth 21, the 2 spline teeth on the left side of the large spline tooth 21 are small spline teeth 22, the spline tooth adjacent to the outermost short spline tooth 23 in the 2 short spline teeth 23 on the right side of each slider groove 24 is the large spline tooth 21, the 2 spline teeth on the right side of the large spline tooth 21 are small spline teeth 22, all the spline teeth except the short spline teeth 23, the large spline tooth 21 adjacent to the short spline teeth 23 and the small spline teeth 22 are the large spline teeth 21, the spline tooth grooves of the external spline between the 3 grooves 14 on the gear hub 1 are divided into two types, namely a large tooth groove 11 corresponding to the large spline teeth 21 and a small tooth groove 12 corresponding to the small spline teeth 21, the large spline teeth 21 and the short spline teeth 23 of the gear sleeve 2 are meshed with the large tooth groove 11 on the gear hub 1, and the small spline teeth 22 of the gear sleeve 2 are meshed with the small tooth grooves 12 on the gear hub 1. Therefore, the swinging quantity of the gear sleeve 2 relative to the gear hub 1 in the process of transmitting torque can be effectively reduced, and the gear sleeve 2 and the engaging teeth 8 can be prevented from disengaging to cause gear shift of the transmission to a great extent, so that the vehicle loses power and safety accidents occur.
Claims (1)
1. A synchronizer structure of an automobile transmission comprises a gear hub (1), a gear sleeve (2), a sliding block (3), a single-cone synchronizing ring (4), a three-cone synchronizing ring outer ring (5), a three-cone synchronizing ring middle ring (6), a three-cone synchronizing ring inner ring (7), first joint teeth (8) and second joint teeth (9); the first joint teeth (8) and the second joint teeth (9) are respectively welded with the gear gears, and the inner conical surface of the synchronizing ring (4) and the outer conical surface (82) of the joint teeth of the first joint teeth (8) are arranged in a clearance way and can form a pair of friction pairs under the action of axial force; the inner conical surface of the outer ring (5) of the three-cone synchronizing ring and the outer conical surface of the middle ring (6) of the three-cone synchronizing ring form a pair of friction pairs, the inner conical surface of the middle ring (6) of the three-cone synchronizing ring and the outer conical surface of the inner ring (7) of the three-cone synchronizing ring form a pair of friction pairs, and the inner conical surface of the inner ring (7) of the three-cone synchronizing ring and the outer conical surface of the gear corresponding to the second engaging tooth (9) also form a pair of friction pairs; the external spline of the gear hub (1) is connected with the internal spline of the gear sleeve (2) to transmit torque, and the gear sleeve (2) can slide relative to the gear hub (1) along the axial direction of the spline and can be combined with the first engaging teeth (8); the gear hub (1) is in interference connection with a transmission shaft of a transmission through an involute spline, a synchronizing ring (4) is embedded into 3 grooves (14) distributed on the gear hub (1) at intervals of 120 degrees in the circumferential direction through three clamping pins and is connected with the gear hub (1) to realize common rotation, 3 spline teeth which are arranged among the spline teeth of the gear sleeve (2) at intervals of 120 degrees in the circumferential direction are provided with a slider groove (24), and 3 sliders (3) are positioned in the 3 slider grooves (24) of the gear sleeve (2) respectively by virtue of own springs and steel balls; have on first joint tooth (8) can with the outer spline tooth (81) of the spline tooth meshing of tooth cover (2), have bellied spacing boss terminal surface (811) on outer spline tooth (81), have on tooth cover (2) and cooperate with spacing boss terminal surface (811) and play spacing terminal surface (25) to first joint tooth (8) limiting displacement, its characterized in that:
spline teeth of an internal spline of a gear sleeve (2) are divided into large spline teeth (21), small spline teeth (22) and short spline teeth (23), the tooth thicknesses of the large spline teeth (21) and the short spline teeth (23) are the same, the tooth thickness of the small spline teeth (22) is smaller than that of the large spline teeth (21) and the short spline teeth (23), the tooth height of the short spline teeth (23) is smaller than that of the large spline teeth (21) and the small spline teeth (22), involute tooth surfaces at two ends of the large spline teeth (21) are axially provided with inverse cone-shaped teeth (26), the involute tooth surfaces at two ends of the short spline teeth (23) are axially provided with inverse cone-shaped teeth (26), spline teeth at 3 slider grooves (24) of the gear sleeve (2) are respectively provided with the short spline teeth (23), 2 spline teeth at the left side of the short spline teeth (23) of each slider groove (24) are also provided with the short spline teeth (23), and 2 spline teeth at the right side of the short spline teeth (23) of each slider groove (24) are also provided with the short spline teeth (23), the spline teeth adjacent to the outermost short spline tooth (23) in the 2 short spline teeth (23) on the left side of each slider groove (24) are large spline teeth (21), the 2 spline teeth on the left side of the large spline tooth (21) are small spline teeth (22), the spline teeth adjacent to the outermost short spline tooth (23) in the 2 short spline teeth (23) on the right side of each slider groove (24) are large spline teeth (21), the 2 spline teeth on the right side of the large spline tooth (21) are small spline teeth (22), all the spline teeth except the short spline teeth (23), the large spline teeth (21) adjacent to the short spline teeth (23) and the small spline teeth (22) are large spline teeth (21), and the spline tooth grooves of the external splines between the 3 grooves (14) on the gear hub (1) are divided into two types, namely large teeth (11) corresponding to the large spline teeth (21) and small teeth (12) corresponding to the small spline teeth (21), the large spline teeth (21) and the short spline teeth (23) of the gear sleeve (2) are meshed with the large tooth grooves (11) on the gear hub (1), and the small spline teeth (22) of the gear sleeve (2) are meshed with the small tooth grooves (12) on the gear hub (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920579453.2U CN210050218U (en) | 2019-04-26 | 2019-04-26 | Synchronizer structure of automobile transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920579453.2U CN210050218U (en) | 2019-04-26 | 2019-04-26 | Synchronizer structure of automobile transmission |
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| CN210050218U true CN210050218U (en) | 2020-02-11 |
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| CN201920579453.2U Active CN210050218U (en) | 2019-04-26 | 2019-04-26 | Synchronizer structure of automobile transmission |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111133212A (en) * | 2017-09-27 | 2020-05-08 | 宁波吉利汽车研究开发有限公司 | Transmission device |
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2019
- 2019-04-26 CN CN201920579453.2U patent/CN210050218U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111133212A (en) * | 2017-09-27 | 2020-05-08 | 宁波吉利汽车研究开发有限公司 | Transmission device |
| US11231075B2 (en) | 2017-09-27 | 2022-01-25 | Ningbo Geely Automobile Research & Development Co. | Transmission device |
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