CN204140688U - A kind of automotive transmission double-cone synchronizer - Google Patents
A kind of automotive transmission double-cone synchronizer Download PDFInfo
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- CN204140688U CN204140688U CN201420491419.7U CN201420491419U CN204140688U CN 204140688 U CN204140688 U CN 204140688U CN 201420491419 U CN201420491419 U CN 201420491419U CN 204140688 U CN204140688 U CN 204140688U
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- tooth hub
- synchronizing ring
- ring
- power shift
- tooth
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Abstract
A kind of automotive transmission double-cone synchronizer, belong to automotive transmission technical field, comprise tooth hub, synchronizing ring, tooth cover and power shift gear, described tooth hub is fixed by tooth hub endoporus spline and transmission shaft and is assembled, described synchronizing ring is arranged in the left and right sides of tooth hub, synchronizing ring is by synchronizing ring inner ring, central ring, synchronizing ring outer shroud forms, described synchronizing ring inner ring, the biconical surface structure cooperatively interacted is provided with between central ring and synchronizing ring outer shroud, central ring arranges one group of positioning pawl mated with locating slot on power shift gear end face, described positioning pawl inserts in locating slot, described tooth cover is sleeved on outside tooth hub, described power shift gear is sleeved on transmission shaft by needle bearing and axle sleeve, the end face that power shift gear coordinates with tooth hub is plane structure.The utility model had both improve the transmission efficiency of speed changer, turn avoid gear and struck tooth phenomenon, improved the NVH performance of speed changer.
Description
Technical field
The utility model relates to a kind of automotive transmission, and especially a kind of automotive transmission double-cone synchronizer, belongs to automotive transmission technical field.
Background technique
Synchronizer is the main parts size improving automotive mechanical transmission gearshift performance, and when it can not only ensure to shift gears, transmission gear engagement is not hit, and abates the noise, improves the working life of gear and transmission system; And shift control light and fast can be made, alleviate driver's labor intensity and acceleration to improving vehicle safety and riding comfort, when improving vehicle starting and fuel economy play an important role.
At present, some automotive mechanical transmissions have employed bipyramid (boring) synchronizer technology more, a kind of double-cone synchronizer as shown in accompanying drawing 1 ~ Fig. 4, after this double-cone synchronizer engages with power shift gear 1, synchronizing ring inner ring 6 relies on the axial boss 1-1 of power shift gear 1 to locate.The axial length coordinated with transmission shaft 4 due to synchromesh gear hub 5 endoporus spline is shorter, circumference and radial fit face is there is between power shift gear 1 and synchronizing ring inner ring 6, thus make synchronizing ring inner ring 6 form radial friction face M1 and circumferential rubbing surface M2 with power shift gear 1 junction point, wherein circumferential rubbing surface M2 can cause synchronizing ring inner ring 6 galloping, the mutual collision phenomenon of synchronizing ring inner ring 6 and central ring 7 is caused to occur, and the existence of circumferential rubbing surface M2 adds the quantity of relative movement rubbing surface, the transmission efficiency of speed changer is reduced; In addition because power shift gear 1 is with axial boss 1-1 structure, power shift gear 1 quality is strengthened, and power shift gear 1 and synchronizing ring inner ring 6 rubbing surface produce towrope resistance due to relative speed difference, cause power shift gear 1 rotary inertia large, easily cause gear to strike tooth problem, affect the NVH performance of speed changer.
Model utility content
The purpose of this utility model is the drawback for prior art, provides a kind of transmission efficiency that can improve speed changer, can avoid that again gear occurs and strike tooth phenomenon, improve the automotive transmission double-cone synchronizer of speed changer NVH performance.
Problem described in the utility model realizes with following technical proposals:
A kind of automotive transmission double-cone synchronizer, comprise tooth hub, synchronizing ring, tooth cover and power shift gear, described tooth hub is fixed by tooth hub endoporus spline and transmission shaft and is assembled, described synchronizing ring is arranged in the left and right sides of tooth hub, synchronizing ring is by synchronizing ring inner ring, central ring, synchronizing ring outer shroud forms, described synchronizing ring inner ring, the biconical surface structure cooperatively interacted is provided with between central ring and synchronizing ring outer shroud, central ring arranges one group of positioning pawl mated with locating slot on power shift gear end face, described positioning pawl inserts in locating slot, described tooth cover is sleeved on outside tooth hub, described power shift gear is sleeved on transmission shaft by needle bearing and axle sleeve, the end face that power shift gear coordinates with tooth hub is plane structure.
Above-mentioned automotive transmission double-cone synchronizer, described tooth hub endoporus spline length is greater than tooth hub exterior arc surface flower key length, and tooth hub both ends of the surface form loop configuration groove.
Above-mentioned automotive transmission double-cone synchronizer, described synchronizing ring inner ring and synchronizing ring outer shroud are placed in tooth hub end face annular texture grooves, between synchronizing ring inner ring and power shift gear, only there is radial friction face.
The power shift gear end face coordinated with tooth hub is designed to planar mechanism by the utility model, and make tooth hub endoporus spline length be greater than the length of tooth hub exterior arc surface upper spline, because this increasing the axial length that tooth hub internal spline coordinates with transmission shaft, spline working depth not only can be made to reduce, be of value to the intensity increasing transmission shaft, but also circular groove structure is formed in tooth hub both ends of the surface, synchronizing ring inner ring and synchronizing ring outer shroud can be placed in the annular groove of tooth hub end face, make only there is radial friction face between synchronizing ring inner ring and power shift gear.The utility model compares with double-cone synchronizer in prior art, because there is not the circumferential rubbing surface that synchronizing ring inner ring and power shift gear cooperation place are formed, eliminate the axial boss of power shift gear simultaneously, both improve the transmission efficiency of speed changer, turn avoid gear and strike tooth phenomenon, improve the NVH performance of speed changer.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is double-cone synchronizer cross-sectional view in prior art;
Fig. 2 is double-cone synchronizer structural blast figure in prior art;
Fig. 3 is double-cone synchronizer power shift gear structural representation in prior art;
Fig. 4 is double-cone synchronizer tooth hub structure schematic diagram in prior art;
Fig. 5 is cross-sectional view of the present utility model;
Fig. 6 is the utility model structural blast figure;
Fig. 7 is power shift gear structural representation of the present utility model;
Fig. 8 is tooth hub structure schematic diagram of the present utility model.
In figure, each list of reference numerals is: 1, power shift gear, 1-1, axial boss, 1-2, locating slot, 2, needle bearing, 3, axle sleeve, 4, transmission shaft, 5, tooth hub, 5-1, tooth hub endoporus spline, 5-2, tooth hub exterior arc surface spline, 5-3, loop configuration groove, 6, synchronizing ring inner ring, 7, central ring, 7-1, positioning pawl, 8, synchronizing ring outer shroud, 9, tooth cover.
Embodiment
Referring to Fig. 5, Fig. 6, Fig. 7, the utility model comprises tooth hub 5, synchronizing ring, tooth cover 9 and power shift gear 1, described tooth hub 5 is fixed by tooth hub endoporus spline 5-1 and transmission shaft 4 and is assembled, described synchronizing ring is arranged in the left and right sides of tooth hub 5, synchronizing ring is by synchronizing ring inner ring 6, central ring 7, synchronizing ring outer shroud 8 forms, described synchronizing ring inner ring 6, the biconical surface structure cooperatively interacted is provided with between central ring 7 and synchronizing ring outer shroud 8, central ring 7 arranges one group of positioning pawl 7-1 mated with locating slot 1-2 on power shift gear 1 end face, described positioning pawl 7-1 inserts in locating slot 1-2, described tooth cover 9 is sleeved on outside tooth hub 5, described power shift gear 1 is sleeved on transmission shaft 4 by needle bearing 2 and axle sleeve 3, the end face that power shift gear 1 coordinates with tooth hub is plane structure.
Referring to Fig. 5, Fig. 8, tooth hub endoporus spline 5-1 length of the present utility model is greater than the length of tooth hub exterior arc surface spline 5-2, and tooth hub both ends of the surface are formed loop configuration groove 5-3; Described synchronizing ring inner ring 6 and synchronizing ring outer shroud 8 are placed in the loop configuration groove 5-3 of tooth hub end face, only there is radial friction face M1 between synchronizing ring inner ring 6 and power shift gear 1.
Referring to Fig. 5 ~ Fig. 8, synchronizing ring inner ring 6 of the present utility model is connected with tooth hub 5 with synchronizing ring outer shroud 8, central ring 7 is connected with power shift gear 1, when not being linked into gear, power shift gear 1 is different from the rotational speed of transmission shaft 4, and tooth hub 5, synchronizing ring inner ring 6, synchronizing ring outer shroud 8, tooth cover 9 is identical with transmission shaft 4 rotating speed, therefore power shift gear 1 is different from the rotating speed of synchronizing ring inner ring 6, and tooth hub 5 is identical with synchronizing ring inner ring 6 rotating speed, thus poor without relative rotation speed between the two, without Relative friction.Because the utility model is by tooth hub endoporus spline 5-1 extended length, when not being linked into gear, only there is fitting surface M1 with synchronizing ring inner ring 6 diametrically in power shift gear 1, owing to eliminating the radial friction face M2 between power shift gear 1 and synchronizing ring inner ring 6, and tooth hub 5 is identical with synchronizing ring inner ring 6 rotating speed, poor without relative rotation speed between the two, without Relative friction.Therefore synchronizing ring inner ring 6 operates more steady, effectively eliminate relative rotation speed difference and cause synchronizing ring inner ring 6 galloping phenomenon, decrease energy loss, improve transmission efficiency, reduce trailing moment, what solution never caused at gear gear strikes tooth problem.
Claims (3)
1. an automotive transmission double-cone synchronizer, comprise tooth hub (5), synchronizing ring, tooth cover (9) and power shift gear (1), described tooth hub (5) is assembled by tooth hub endoporus spline (5-1) and transmission shaft (4) are fixing, described synchronizing ring is arranged in the left and right sides of tooth hub (5), synchronizing ring is by synchronizing ring inner ring (6), central ring (7), synchronizing ring outer shroud (8) forms, described synchronizing ring inner ring (6), the biconical surface structure cooperatively interacted is provided with between central ring (7) and synchronizing ring outer shroud (8), central ring (7) arranges one group of positioning pawl (7-1) mated with locating slot (1-2) on power shift gear (1) end face, described positioning pawl (7-1) inserts in locating slot (1-2), described tooth cover (9) is sleeved on tooth hub (5) outside, described power shift gear (1) is sleeved on transmission shaft (4) by needle bearing (2) and axle sleeve (3), it is characterized in that, the end face that power shift gear (1) coordinates with tooth hub (5) is plane structure.
2. a kind of automotive transmission double-cone synchronizer according to claim 1, is characterized in that, described tooth hub endoporus spline (5-1) length is greater than the length of tooth hub exterior arc surface spline (5-2), and tooth hub both ends of the surface are formed loop configuration groove (5-3).
3. a kind of automotive transmission double-cone synchronizer according to claim 1 and 2, it is characterized in that, described synchronizing ring inner ring (6) and synchronizing ring outer shroud (8) are placed in the loop configuration groove (5-3) of tooth hub end face, only there is radial friction face M1 between synchronizing ring inner ring (6) and power shift gear (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420491419.7U CN204140688U (en) | 2014-08-29 | 2014-08-29 | A kind of automotive transmission double-cone synchronizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420491419.7U CN204140688U (en) | 2014-08-29 | 2014-08-29 | A kind of automotive transmission double-cone synchronizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204140688U true CN204140688U (en) | 2015-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420491419.7U Active CN204140688U (en) | 2014-08-29 | 2014-08-29 | A kind of automotive transmission double-cone synchronizer |
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| CN (1) | CN204140688U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104728295A (en) * | 2015-04-07 | 2015-06-24 | 天津天海同步科技股份有限公司 | Automobile synchronizer assembly |
| CN105317872A (en) * | 2015-07-02 | 2016-02-10 | 宁波吉利罗佑发动机零部件有限公司 | Synchronizer |
| CN106402188A (en) * | 2015-07-30 | 2017-02-15 | 斯凯孚公司 | Synchronous intermediate ring and connection of the synchronous intermediate ring to a synchronization system |
| CN106641011A (en) * | 2015-11-04 | 2017-05-10 | 现代自动车株式会社 | Clutch for vehicle |
| CN107061539A (en) * | 2015-11-04 | 2017-08-18 | 贺尔碧格传动技术控股有限公司 | The multiple simultaneous component of manual transmission |
| CN107956814A (en) * | 2017-11-09 | 2018-04-24 | 宁波上中下自动变速器有限公司 | A kind of synchronization ring, double-cone synchronizer and third hand tap synchronizer |
-
2014
- 2014-08-29 CN CN201420491419.7U patent/CN204140688U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104728295A (en) * | 2015-04-07 | 2015-06-24 | 天津天海同步科技股份有限公司 | Automobile synchronizer assembly |
| CN104728295B (en) * | 2015-04-07 | 2023-08-29 | 天津天海同步科技有限公司 | Automobile synchronizer assembly |
| CN105317872A (en) * | 2015-07-02 | 2016-02-10 | 宁波吉利罗佑发动机零部件有限公司 | Synchronizer |
| CN105317872B (en) * | 2015-07-02 | 2018-07-06 | 宁波上中下自动变速器有限公司 | Synchronizer |
| CN106402188A (en) * | 2015-07-30 | 2017-02-15 | 斯凯孚公司 | Synchronous intermediate ring and connection of the synchronous intermediate ring to a synchronization system |
| CN106402188B (en) * | 2015-07-30 | 2020-05-05 | 斯凯孚公司 | Synchronous spacer and connection of such a synchronous spacer to a synchronous system |
| CN106641011A (en) * | 2015-11-04 | 2017-05-10 | 现代自动车株式会社 | Clutch for vehicle |
| CN107061539A (en) * | 2015-11-04 | 2017-08-18 | 贺尔碧格传动技术控股有限公司 | The multiple simultaneous component of manual transmission |
| CN106641011B (en) * | 2015-11-04 | 2019-10-29 | 现代自动车株式会社 | Vehicle clutch |
| CN107956814A (en) * | 2017-11-09 | 2018-04-24 | 宁波上中下自动变速器有限公司 | A kind of synchronization ring, double-cone synchronizer and third hand tap synchronizer |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |