CN201212554Y - Synchronizator of automobile speed variator - Google Patents
Synchronizator of automobile speed variator Download PDFInfo
- Publication number
- CN201212554Y CN201212554Y CNU2008200985501U CN200820098550U CN201212554Y CN 201212554 Y CN201212554 Y CN 201212554Y CN U2008200985501 U CNU2008200985501 U CN U2008200985501U CN 200820098550 U CN200820098550 U CN 200820098550U CN 201212554 Y CN201212554 Y CN 201212554Y
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- synchronizer
- synchronously
- synchronizing ring
- hub
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Abstract
The utility model relates to a synchronizer for an automobile transmission. Synchronous tooth-holders are fixed on two axles, wheel teeth of synchronous sliding sleeves are respectively meshed with wheel teeth of a left and a right synchronous rings and the synchronous tooth-holders, the left and the right synchronous rings adopt clearance fit with the left and the right ends of the synchronous tooth-holders, the frictional conical surfaces of a left and a right synchronous conical hubs are respectively fitted with the frictional conical surfaces of the left and the right synchronous rings, inserting slots are arranged at the outer circumferences of the synchronous tooth-holders, positioning devices are arranged in the inserting slots, positioning chutes are arranged on the top surfaces of the wheel teeth of the synchronous sliding sleeves, and one end of the positioning devices is matched in the positioning chutes in a sliding way; shifting grooves are arranged on the outer circumferential surfaces of the synchronous sliding sleeves, and limit barbs are arranged at the left and the right ends of the top surfaces of the wheel teeth at the inner circumferences; protuberances are arranged at the upper ends of the frictional conical surfaces of the left and the right synchronous rings, grooves are respectively arranged on the axial end surfaces of the left and the right synchronous conical hubs, and the groove openings of the grooves are combined with the frictional conical surfaces of the synchronous conical hubs. The utility model can improve the bearing capacity and enhance the shifting performance of the transmission, and has simple production process and low production cost.
Description
Technical field
The utility model relates to a kind of speed changer, is specifically related to a kind of synchronizer of automotive transmission.
Background technique
The fast development of city bus automobile in recent years, people have higher requirement to the travelling comfort of gear shift, and abroad some developed countries just develop towards the self-shifting gear box direction.Though the operating process of traditional armstrong's patent speed changer is simple not as self-shifting gear box,, still has the stronger market competitiveness because of it has reliable operation, simple in structure, manufacturing and maintenance cost is low, fuel economy is good.Existing armstrong's patent speed changer for avoiding gear to be impacted, is provided with synchronizer between each shifting gear of speed changer when gear shift.The advantage that this synchronizer gear meshing except that can guarantee gear shift the time is not hit, pay off, prolonged the life-span of gear, make gearshift procedure light, rapid, thereby help improving the power character and the fuel economy of automobile except the gear shift noise.Therefore, in modern mechanical formula gear-driving speed-variable device gearshift procedure, synchronizer is widely used.
Along with improving constantly of discharging standards, the increase of the moment of torsion of motor output.In having the speed changer of synchronizer, the gear teeth of change gear cause its bearing capacity deficiency because of the facewidth is narrow at present, occur the situation of gear engagement inefficacy even broken teeth in the speed changer working procedure, cause the speed changer operational failure, making driving have potential safety hazard.Certain XML6125 of company passenger vehicle for example, the motor of configuration YC6L330-40, the peak output of this motor output is 243KW, the Maximum Torque 1280N.m of output, when adopting present S6-90 type speed changer in use, the broken teeth phenomenon appears in six retaining gears of speed changer.Situation at present speed changer, how to guarantee under the constant prerequisite of car load length of installation, adopt the shorter synchronizer of installation dimension, the facewidth that adds gearwheel, the bearing capacity of raising speed changer is simultaneously at single universality synchronizer of boring, improve shift property, shorten lock in time, reduce berth-changing strength, it is more and more important to become.Because the axial overall length L ' of synchronizer is the 60mm (see figure 8), has not only taken the space of bigger mission case, makes that also the stroke of gear shift is big, required shift time is long.Again because the friction pair area of the cone of friction of synchronous awl hub in the synchronizer and synchronizing ring is too small, the synchronising torque that produces when causing synchronizer work is low, and required gear-change operation power is big, therefore, present speed changer does not possess the light advantage of gear shift, and long shortcoming of shift time is arranged.
Summary of the invention
At above-mentioned technical problem, the purpose of this utility model is to provide a kind of synchronizer of automotive transmission, and simultaneously, it can improve the bearing capacity of speed changer and the shift property that can improve speed changer by reduction berth-changing strength and shortening shifting of transmission time.Adopt the utility model structure, also have production technology simple, the advantage that can reduce production costs greatly.
The purpose of this utility model is achieved in that synchronous toothholder circumferentially is fixed on two, gear teeth meshing on the gear teeth of the inner circumference of synchronous sliding sleeve and the synchronous toothholder excircle, a left side, right synchronizing ring respectively with the left side of synchronous toothholder, the right-hand member Spielpassung, a left side, the gear teeth of right synchronizing ring and the gear teeth of synchronous sliding sleeve are meshing with each other, the left side that hub is positioned at left synchronizing ring is bored on a left side synchronously, the cone of friction of hub is bored on a left side synchronously and the cone of friction of left synchronizing ring is fitted, the right hub of awl synchronously is positioned at the right side of right synchronizing ring, the cone of friction of the right hub of awl synchronously and the cone of friction of right synchronizing ring are fitted, the excircle of described synchronous toothholder is provided with a plurality of slots, a positioning device is set in this slot, and an end of described positioning device is snug fit in this positioning runner; The Topland middle part of the gear teeth of synchronous sliding sleeve is provided with positioning runner, and the outer peripheral surface of synchronous sliding sleeve is provided with the gear shift groove, and the two ends, the left and right sides of the Topland of the gear teeth of inner circumference are respectively equipped with spacing ditch; The axial overall length L of synchronizer is 46mm, protrude from the projection of synchronizing ring axial end along the extending end setting of the cone of friction of left and right synchronizing ring upper end, be equipped with the groove that inserts for the projection on the synchronizing ring on the axial end of described left and right synchronous awl hub separately, the notch of this groove engages with the cone of friction of boring hub synchronously.
Adopted such scheme, the axial overall length L of described synchronizer is 46mm, compare with existing synchronizer, can save the dimensional space of 14mm for speed changer, the space that synchronizer takies mission case reduces, and the space of saving can be used to increase the width of the change gear gear teeth, does not change in the size that guarantees mission case like this, be under the constant situation of car load length of installation, make that each parts in the speed changer are rationally arranged, compact structureization.Adopt the utility model structure to make the width of gear tooth increase 7mm, help bearing the high pulling torque of motor output, can make the torque capacity of speed changer improve 60%, the bearing capacity of speed changer improves, and can also avoid speed changer to occur gear engagement inefficacy, broken teeth in the course of the work, guaranteed the reliability and the traveling security of speed changer work.And when synchronizer was in running order, synchronous sliding sleeve was bored hub and the synchronous sliding sleeve the longest 3.45mm of junction plane under the situation of engagement fully after meshing with synchronous awl hub synchronously, and the stroke of synchronizer shortens, the shift time shortening.Extend along the upper end of the cone of friction of left and right synchronizing ring the projection that protrudes from the synchronizing ring axial end is set, be equipped with the groove that inserts for the projection on the synchronizing ring on the axial end of described left and right synchronous awl hub separately, the notch of this groove is fitted with the cone of friction of boring hub synchronously.When synchronizer is worked, synchronizing ring and the average diameter of boring the rubbing surface of hub had synchronously both been increased, increase synchronizing ring again and bored hub friction pair area between the two synchronously, be beneficial to the synchronising torque that improves synchronizing ring like this, can effectively reduce the berth-changing strength and the shift time of synchronizer, reach the purpose of light gear shift.When synchronizer is in running order, have enough deposit gaps between the axial end of synchronizing ring and synchronous awl hub, be beneficial to and guarantee that synchronizer can normally use.
Table 1 is synchronizer of the present utility model and synchronizer performance comparison situation of the prior art
According to the test comparing result of table 1, the utility model required berth-changing strength when gear shift reduces, and is more light to transmission operating during gear shift; The existing relatively also corresponding shortening of synchronizer of the stroke of gear shift and lock in time.Therefore, transmission performance of the present utility model effectively gets a promotion.
Described positioning device comprises spring and a big up and small down synchronous pushing block, and the structure of pushing block becomes simply and the minimizing of the quantity of spring synchronously, can reduce the difficulty of processing of synchronous pushing block and the cost of production that reduces positioning device.The two ends, the left and right sides of the Topland of the gear teeth of the inner circumference of described synchronous sliding sleeve are respectively equipped with spacing ditch.By this spacing ditch that falls, the stroke limiting of synchronous sliding sleeve that can make synchronizer is avoided the excessive synchronizer trip stop that causes of stroke of synchronous sliding sleeve in the number range that is provided with, cause occurring the shortcoming that gear shift was lost efficacy.Described synchronous sliding sleeve is 0.2～0.3mm with sideshake after left and right synchronous awl hub engages, can effectively prevent the synchronizer trip stop, and provides safeguard for the flexible slip of synchronous sliding sleeve.
Adopt synchronous pushing block of the present utility model and synchronous toothholder, it is simple in structure, can reduce the difficulty of processing of part, because the quantity of synchronisation spring only is one (being the dual spring structure in the prior art) in the synchronizer, so synchronizer structure is simplified greatly.In addition, adopt synchronizing ring of the present utility model, under the prerequisite that guarantees usability, by changing processing method, promptly earlier process screw thread on body, back sprayed molybdenum makes molybdenum layer thickness be reduced to 0.1mm by original 0.4mm, therefore the utility model has production technology simple, the advantage that can reduce production costs greatly.
The utility model also has and is widely used except that having above-mentioned advantage, has very high added value.
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the fractionation schematic representation of synchronizer of the present utility model;
Fig. 2 is the assembling schematic representation of synchronizer of the present utility model;
Fig. 3 is the local amplification assumption diagram that hub is bored on the left side in the utility model synchronously;
Fig. 4 is the local amplification assumption diagram of the left synchronizing ring in the utility model;
Fig. 5 is the local amplification assumption diagram of the synchronizing sleeve in the utility model;
Fig. 6 is the local amplification assumption diagram of the synchronous toothholder in the utility model;
Fig. 7 is synchronous sliding sleeve and the structure for amplifying sketch of boring the hub engagement synchronously.
Fig. 8 is the assembling schematic representation of synchronizer of the prior art.
In the accompanying drawing, 1 is fourth gear, and 2 is left side awl hub synchronously, 2 ' be the right hub of awl synchronously, 3 is left synchronizing ring, 3 ' be right synchronizing ring, 3a is a limiting stopper, 4 is synchronous toothholder, 4a is a short slot, and 4b is a jack, and 4c is a restraining groove, and 5 is synchronous pushing block, 6 is spring, and 7 is synchronous sliding sleeve, and 7a is the gear shift groove, and 7b is the gear teeth, 7c is a positioning runner, and 8 is elastic scheibe, and 9 is three-range transmission, and 10 is two, 11 is spacing ditch, and 12 is groove, and 13 is projection, and 14,15 is cone of friction.
Embodiment
Referring to figs. 1 through Fig. 7, synchronizer of the present utility model comprise synchronous toothholder 4, synchronous sliding sleeve 7, left and right synchronizing ring 3,3 ' and left and right synchronous awl hub 2,2 '.The axial overall length L of synchronizer is 46mm, wherein, left and right synchronizing ring 3,3 ' axial overall length be 11.5mm, left and right synchronizing ring 3,3 ' gear teeth thickness be 2.5mm; Left and right synchronous awl hub 3,3 ' axial overall length are 18mm, left and right synchronous awl hub 3,3 ' gear teeth thickness be 6.5mm.Synchronizer is installed on two 10, and the left side of synchronizer is for being installed in the fourth gear 1 on two by needle bearing, and the right side of synchronizer is for being installed in the three-range transmission 9 on two by needle bearing.Toothholder 4 circumferentially is fixed on two 10 synchronously, and toothholder circumferentially is fixed on two 10 by internal spline and passes through circlip 8 axial limitings synchronously.The excircle of toothholder 4 is provided with a plurality of slots synchronously, has evenly arranged 3 slots on the synchronous toothholder 4 in the present embodiment.A positioning device is set in this slot.The jack 4b that slot comprises the short slot 4a that runs through the left and right axial end of synchronous toothholder and is arranged at this short slot bottom for the positioning device insertion, toothholder 4 is provided with three restraining groove 4c synchronously, and each restraining groove is positioned at the left and right sides of short slot 4a oral area.Positioning device comprises spring 6 and a big up and small down synchronous pushing block 5, and the bottom of pushing block 5 is a cylindrical section synchronously, and spring 6 is enclosed within the bottom of synchronous pushing block, among the jack 4b on the synchronous toothholder 4 of pushing block 5 cover upper springs, 6 back insertions synchronously.The side on the top of pushing block 5 is the plane synchronously, and the end face of pushing block is an arc shaped surface synchronously.The left and right axial end of toothholder 4 is provided with groove synchronously.The outer peripheral surface of synchronous sliding sleeve 7 is provided with gear shift groove 7a, and this gear shift groove is a circular groove for the reverse shift fork insertion.Gear teeth meshing on the gear teeth 7b of the inner circumference of synchronous sliding sleeve 7 and the synchronous toothholder excircle, the Topland middle part of the gear teeth of synchronous sliding sleeve is provided with positioning runner 7c, and the groove face of this positioning runner is a radian less than 180 ° arc shaped surface.One end of described positioning device is snug fit among this positioning runner 7c, and synchronous pushing block 5 upper ends of positioning device are inserted among this positioning runner 7c and formed Spielpassung with this positioning runner.The two ends, the left and right sides of the Topland of the gear teeth 7b of the inner circumference of synchronous sliding sleeve 7 are respectively equipped with spacing ditch 11, are used to prevent the synchronizer trip stop.The left and right axial end Spielpassung of left and right synchronizing ring 3,3 ' respectively and synchronous toothholder, left and right synchronizing ring 3,3 ' the groove Spielpassung that is provided with of axial end and toothholder 4 axial ends synchronously.Left and right synchronizing ring 3,3 ' excircle on three limiting stopper 3a are arranged uniformly at intervals, insert among the synchronous toothholder locating slot 4c by limiting stopper, make the location of left and right synchronizing ring 3,3 ' circumferentially.Left and right synchronizing ring 3,3 ' the gear teeth and the gear teeth of synchronous sliding sleeve 7 be meshing with each other.Left and right synchronizing ring 3,3 ' inner ring surface be a cone of friction 14, the face angle of this cone of friction be 6 ° 30 ', along left and right synchronizing ring 3,3 ' the upper end of cone of friction the projection 13 that protrudes from the synchronizing ring axial end extend to be set.The axially extended boss of left and right synchronous awl hub 2,2 ' be provided with, the upper-end surface of this boss are the cone of friction 15 of awl hub synchronously, the face angle of this cone of friction be 6 ° 30 '.The left side that hub 2 is positioned at left synchronizing ring 3 is bored on a left side synchronously, and insert in the left synchronizing ring 3 on the left side boss of awl hub 2 synchronously, and the cone of friction of a left side synchronous awl hub 2 and the cone of friction of left synchronizing ring are fitted.The right hub 2 of awl synchronously ' the be positioned at right side of right synchronizing ring, the right hub 2 of awl synchronously ' boss insert right synchronizing ring 3 ' in, the cone of friction of the right hub of awl synchronously and the cone of friction applying of right synchronizing ring.Thus, increased the average diameter of synchronizer cone of friction, guarantee that simultaneously synchronizer has enough synchronous deposit gaps, with the normal use that guarantees synchronizer (laying in the gap synchronously when being meant synchronizing ring and the awl hub being close to synchronously, synchronizing ring and the gap of boring synchronously between the hub).Left and right synchronous awl hub 2,2 ' axial end on be equipped with the groove 12 that inserts for the projection on the synchronizing ring separately, the notch of this groove engages with the cone of friction of boring hub synchronously.When synchronizer was in off working state, between synchronizing ring and the synchronous awl hub deposit gap B being arranged was 1.6mm.When synchronizer is in running order, after synchronous sliding sleeve 7 meshes with synchronous awl hub, bore hub and the synchronous sliding sleeve the longest 3.45mm of junction plane under the situation of engagement fully synchronously, described synchronous sliding sleeve is 0～0.2mm with the spacing numerical value of boring hub synchronously, the size of the sideshake between synchronous sliding sleeve 7 and the synchronous awl hub is 0.2～0.3mm, jumps out from synchronizer to prevent synchronizer trip stop and synchronous pushing block.Left side awl hub 2 synchronously is connected by inside and outside spline with the fourth gear 1 that is positioned at its left side, the right hub 2 of awl synchronously ' be connected by inside and outside spline with the three-range transmission 9 that is positioned at its right side.
The axial dimension length overall of synchronous awl hub of the present utility model is 18mm, 22mm with respect to the axial dimension length overall of synchronous awl hub of the prior art has reduced 4mm, awl hub soldered tooth thickness is 6.5mm, 7.5mm with respect to awl hub soldered tooth thickness in the prior art has reduced 1mm, the synchronizing ring axial dimension is 11.5mm, 12.6mm with respect to synchronizing ring axial dimension in the prior art has reduced 1.1mm, synchronizing ring soldered tooth thickness is 2.5mm, 4mm with respect to synchronizing ring soldered tooth thickness in the prior art has reduced 1.5mm, awl hub and synchronous sliding sleeve the longest 3.45mm of junction plane under situation about combining have fully reduced 2.2mm with respect to 5.65mm of the prior art synchronously.Pushing block is set to single spring structure by dual spring structure in the prior art synchronously, and pushing block is of a size of 11mm and has reduced 7mm with respect to 18 of pushing block size in the prior art.Therefore, described synchronizer structure is compact more.
The utility model is operating as example and describes to change fourth gear.When changing the fourth gear operation, stir synchronous sliding sleeve 7 by the reverse shift fork (not shown) and be moved to the left the wheel indented joint of boring hub 2 with a left side synchronously, behind the wheel indented joint of synchronous sliding sleeve 7 and left synchronizing ring 3, continue to be moved to the left, bore the wheel indented joint of hub 2 synchronously with a left side, finish gear shift.Therefore, being delivered to a left side synchronously behind the awl hub 2, bore hub synchronously by a left side and be delivered to synchronous sliding sleeve, transmit synchronous toothholder 4 by synchronous sliding sleeve 7 again and drive two 10 and rotate, output power by two from the power of fourth gear 1 output.
Synchronizer of the present utility model is applied on the S6-90 speed changer, and through the test analysis to the shift property of the load-carrying properties of gear and synchronizer, the bearing capacity of speed changer rises to 1400N.m from 1000N.m.Synchronizer of the present utility model removes and can be applicable on medium-to-high grade touring car and the bus, for example the passenger vehicle speed changer of S6-80, S6-100, S6-150, S6-160 type; Can also be applied on the lorry gear box of 5S-150GP, QJ16S series.
Claims (7)
1. the synchronizer of an automotive transmission, toothholder (4) circumferentially is fixed on two (10) synchronously, gear teeth meshing on the gear teeth of the inner circumference of synchronous sliding sleeve and the synchronous toothholder excircle, a left side, right synchronizing ring (3,3 ') respectively with the left side of synchronous toothholder, the right-hand member Spielpassung, a left side, the gear teeth of right synchronizing ring and the gear teeth of synchronous sliding sleeve are meshing with each other, the left side that hub is positioned at left synchronizing ring is bored on a left side synchronously, fit with the cone of friction (14) of left synchronizing ring in the left side cone of friction (15) of awl hub (2) synchronously, the right hub of awl synchronously is positioned at the right side of right synchronizing ring, the cone of friction of right awl hub (2 ') synchronously and the cone of friction of right synchronizing ring are fitted, it is characterized in that: the excircle of described synchronous toothholder is provided with a plurality of slots, a positioning device is set in this slot, the Topland middle part of the gear teeth of synchronous sliding sleeve is provided with positioning runner, and an end of described positioning device is snug fit in this positioning runner; The outer peripheral surface of synchronous sliding sleeve (7) is provided with the gear shift groove, and the two ends, the left and right sides of the Topland of the gear teeth of inner circumference are respectively equipped with spacing ditch (11); The axial overall length L of synchronizer is 46mm, protrude from the projection (13) of synchronizing ring axial end along the extending end setting of the cone of friction of left and right synchronizing ring upper end, be equipped with the groove (12) that inserts for the projection on the synchronizing ring on the axial end of described left and right synchronous awl hub separately, the notch of this groove engages with the cone of friction of boring hub synchronously.
2. the synchronizer of automotive transmission according to claim 1, it is characterized in that: the slot of described synchronous toothholder comprises the short slot (4a) that runs through the left and right axial end of synchronous toothholder, and the jack (4b) for the positioning device insertion that is arranged at this short slot bottom.
3. the synchronizer of automotive transmission according to claim 1 is characterized in that: the groove face of the positioning runner on the described synchronous sliding sleeve (7c) is a radian less than 180 ° arc shaped surface.
4. the synchronizer of automotive transmission according to claim 1, it is characterized in that: described positioning device comprises spring (6) and a big up and small down synchronous pushing block (5), and spring housing is in the bottom of pushing block synchronously, and the end face of pushing block is an arc shaped surface synchronously.
5. the synchronizer of automotive transmission according to claim 1 and 2, it is characterized in that: a plurality of uniformly at intervals on the excircle of described left and right synchronizing ring (3,3 ') along its axially extended limiting stopper (3a), corresponding uniform a plurality of restraining grooves (4c) on the excircle of synchronous toothholder for the limiting stopper insertion.
6. the synchronizer of automotive transmission according to claim 1, it is characterized in that: described synchronous sliding sleeve is 0.2～0.3mm with the sideshake that left and right synchronous awl hub engages.
7. the synchronizer of automotive transmission according to claim 1 is characterized in that: described synchronous sliding sleeve is 0～0.2mm with the spacing numerical value of awl hub synchronously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200985501U CN201212554Y (en) | 2008-06-13 | 2008-06-13 | Synchronizator of automobile speed variator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200985501U CN201212554Y (en) | 2008-06-13 | 2008-06-13 | Synchronizator of automobile speed variator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201212554Y true CN201212554Y (en) | 2009-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200985501U Expired - Fee Related CN201212554Y (en) | 2008-06-13 | 2008-06-13 | Synchronizator of automobile speed variator |
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| CN (1) | CN201212554Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155501A (en) * | 2010-02-12 | 2011-08-17 | 本田技研工业株式会社 | Dog clutch gear |
| CN102221083A (en) * | 2011-05-26 | 2011-10-19 | 重庆大学 | Refitting method incapable of switching manual transmission to one or several gears |
| CN103697119A (en) * | 2013-12-31 | 2014-04-02 | 黄安民 | Double-power transmission |
| CN103758885A (en) * | 2014-01-09 | 2014-04-30 | 赵孝全 | Automotive synchronizer |
| CN106402189A (en) * | 2016-11-23 | 2017-02-15 | 浙江万里扬股份有限公司 | Synchronizer and speed changing box |
| CN107269731A (en) * | 2017-07-13 | 2017-10-20 | 东风商用车有限公司 | Double-spring support column structure of high-resistance synchronizer and assembling method thereof |
| CN110985616A (en) * | 2019-12-31 | 2020-04-10 | 綦江齿轮传动有限公司 | Three-cone synchronizer of transmission |
| CN112145573A (en) * | 2020-10-29 | 2020-12-29 | 东风商用车有限公司 | Synchronizer assembly |
-
2008
- 2008-06-13 CN CNU2008200985501U patent/CN201212554Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155501A (en) * | 2010-02-12 | 2011-08-17 | 本田技研工业株式会社 | Dog clutch gear |
| US8448771B2 (en) | 2010-02-12 | 2013-05-28 | Honda Motor Co., Ltd. | Dog clutch gear |
| CN102221083A (en) * | 2011-05-26 | 2011-10-19 | 重庆大学 | Refitting method incapable of switching manual transmission to one or several gears |
| CN102221083B (en) * | 2011-05-26 | 2013-08-14 | 重庆大学 | Refitting method incapable of switching manual transmission to one or several gears |
| CN103697119A (en) * | 2013-12-31 | 2014-04-02 | 黄安民 | Double-power transmission |
| CN103758885A (en) * | 2014-01-09 | 2014-04-30 | 赵孝全 | Automotive synchronizer |
| CN106402189A (en) * | 2016-11-23 | 2017-02-15 | 浙江万里扬股份有限公司 | Synchronizer and speed changing box |
| CN107269731A (en) * | 2017-07-13 | 2017-10-20 | 东风商用车有限公司 | Double-spring support column structure of high-resistance synchronizer and assembling method thereof |
| CN107269731B (en) * | 2017-07-13 | 2024-01-16 | 东风商用车有限公司 | Double-spring support column structure of high-resistance synchronizer and assembly method thereof |
| CN110985616A (en) * | 2019-12-31 | 2020-04-10 | 綦江齿轮传动有限公司 | Three-cone synchronizer of transmission |
| CN112145573A (en) * | 2020-10-29 | 2020-12-29 | 东风商用车有限公司 | Synchronizer assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090325 Termination date: 20130613 |