CN202901250U - Forward gear and reverse gear switching mechanism of continuously variable transmission (CVT) for automobile - Google Patents
Forward gear and reverse gear switching mechanism of continuously variable transmission (CVT) for automobile Download PDFInfo
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- CN202901250U CN202901250U CN 201220551567 CN201220551567U CN202901250U CN 202901250 U CN202901250 U CN 202901250U CN 201220551567 CN201220551567 CN 201220551567 CN 201220551567 U CN201220551567 U CN 201220551567U CN 202901250 U CN202901250 U CN 202901250U
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- 230000007246 mechanism Effects 0.000 title claims abstract description 29
- 230000002441 reversible effect Effects 0.000 title claims abstract description 23
- 230000005540 biological transmission Effects 0.000 title abstract description 14
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 239000010720 hydraulic oil Substances 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 239000002184 metal Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
本实用新型涉及一种汽车用无级变速器前进倒挡切换机构，由输入轴合件、行星架、行星齿轮、太阳轮、齿圈、前进离合器、倒挡制动器等部分组成。当前进离合器液压缸充入适当压力的液压油，前进离合器进入结合状态，把行星架和太阳轮连接在一起，从而实现动力的1∶1的传递。当倒挡制动器液压缸充入适当压力的液压油，倒挡制动器进入结合状态，行星架带动行星齿轮转动，从而实现动力传递的反转。前进挡时使输入与输出直接连接，传动比为1∶1，简化了传动结构和中间过程，提高了效率。活塞的结构保证了前进倒挡过程中压板压力的均匀。
The utility model relates to a forward and reverse gear switching mechanism of a continuously variable transmission for automobiles, which is composed of an input shaft assembly, a planet carrier, a planetary gear, a sun gear, a ring gear, a forward clutch, a reverse brake and the like. When the hydraulic cylinder of the forward clutch is filled with hydraulic oil of appropriate pressure, the forward clutch enters into a combined state, and the planetary carrier and the sun gear are connected together, thereby realizing a 1:1 transmission of power. When the hydraulic cylinder of the reverse gear brake is filled with hydraulic oil of appropriate pressure, the reverse gear brake enters into a combined state, and the planetary carrier drives the planetary gears to rotate, thereby realizing the reverse of power transmission. The input and output are directly connected in the forward gear, and the transmission ratio is 1:1, which simplifies the transmission structure and the intermediate process, and improves the efficiency. The structure of the piston ensures uniform pressure on the pressure plate during forward and reverse gears.
Description
Technical field
The utility model relates to a kind of automobile switching mechanism that reverses gear that advances, specifically a kind of automobile metal variable v-belt drive switching mechanism that reverses gear that advances.
Background technique
Because motor can not reverse, and the metal tape of metal band type stepless speed variator can only equidirectional transferring power, does not also possess commutation function.But automobile in the process of moving, and not only requirement can forward travel but also required reversing.The stepless speed variator that uses on the automobile need to design the switching mechanism that advances, reverses gear, and motor is turned to be passed to turn in the same way and reverse, to realize advancing or falling back of automobile.
At present, the metal band type stepless speed variator that uses on the automobile advances and reverses gear switching mechanism in order to advance, reverse gear easy switching, and its forward gear velocity ratio is not equal to 1, and drive mechanism is comparatively complicated, has reduced transmission efficiency.
Summary of the invention
The purpose of this utility model is to propose a kind of Novel steam stepless speed variator of vehicle switching mechanism that reverses gear that advances, and simple in structure, reliable operation, transmission efficiency are high.
The purpose of this utility model can be achieved through the following technical solutions:
Automobile advances with stepless speed variator, and what reverse gear that switching mechanism main part branch adopts is planetary gears, partly formed by input shaft component, planet carrier, planetary pinion, sun gear, gear ring, forward clutch, the break that reverses gear etc., reverse gear break and forward clutch all is made of multi-disc wet clutch, planet carrier and input shaft component connect firmly together by the thread form tooth, keep synchronized with the reverse gear input shaft of switching mechanism of advancing all the time.
The outside friction disc of forward clutch connects firmly together by uniform thread form tooth and input shaft component, inner attrition piece connects firmly together by being distributed in inboard thread form tooth and sun gear component, under the effect of hydraulic coupling, the forward gear piston promotes the forward gear friction disk is contacted with the forward gear friction plate, the forward clutch combination, the reverse gear input shaft component of switching mechanism and the sun gear component of advancing connects firmly with planet carrier and is in the same place, without relatively rotating, power is from the input shaft direct-drive of switching mechanism to sun gear.
The outside friction disc of break of reversing gear connects firmly together by the thread form tooth around uniform and the middle casing of stepless speed variator, inner attrition piece connects firmly together by being distributed in inboard thread form tooth and gear ring outer shroud thread form tooth, under the effect of hydraulic coupling, the piston that reverses gear promotes the friction disk that reverses gear is contacted with the friction plate that reverses gear, the break that reverses gear works, the reverse gear gear ring of switching mechanism and the housing of stepless speed variator of advancing connects firmly together, without relatively rotating, realizes the purpose of reversing gear thereby reach fixed gear ring.
Advantage of the present utility model is: input directly is connected with output, and velocity ratio is 1: 1, has simplified drive mechanism and pilot process, has improved efficient; The structure of piston guaranteed to advance reverse gear process center platen pressure evenly.
Description of drawings
Fig. 1 is automobile with the stepless speed variator switching mechanism structural drawing that reverses gear that advances.
Among the figure: 1 forward gear piston, 2 forward gear friction disks, 3 forward gear friction plates, 4 friction disks that reverse gear, 5 friction plates that reverse gear, 6 pistons that reverse gear, 7 planetary pinions, 8 sun gears, 9 planet carriers, 10 gear rings, 11 input shafts.
Embodiment
Automobile with stepless speed variator advance, reverse gear switching mechanism structure as shown in Figure 1, its main body is made of planetary gears (planetary pinion 7, sun gear 8, planet carrier 9, gear ring 10), and control section is comprised of forward clutch (forward gear piston 1, forward gear friction disk 2, forward gear friction plate 3 etc.), the break that reverses gear (friction disk 4 that reverses gear, the friction plate 5 that reverses gear, piston 6 etc. reverses gear) and corresponding hydraulic control system.
Reverse gear
It is the main purpose that stepless speed variator arranges switching mechanism that realization is reversed gear, and utilizes the mechanical structure characteristic of switching mechanism, and the transmission of power of irreversible engine power outbound course by switching mechanism changed its direction of transfer, thereby realizes reversing gear of automobile.
When reversing gear, the working procedure of switching mechanism is as follows: the hydraulic oil that is filled with suitable pressure in the break oil hydraulic cylinder that reverses gear of switching mechanism, the promotion piston 6 that reverses gear moves right, the friction plate 5 of the break that reverses gear is contacted with friction disk 4, the break that reverses gear enters bonding state, the gear ring 10 of switching mechanism is maintained static, this moment, the power of motor passed to planet carrier 9 by switching mechanism input shaft 11, planet carrier 9 drives planetary pinion 7 and rotates, because gear ring 10 is fixing, power can only pass to sun gear 8, and sun gear 8 passes to CVT driving wheel input shaft by spline with power again.
The power transmission line that reverses gear is: engine output shaft-fluid torque converter-switching mechanism input shaft-planet carrier-planetary pinion-sun gear-CVT driving wheel input shaft, reverse gear by the change realization of gear transmission process medium power direction of transfer.
Forward gear
Be filled with the hydraulic oil of suitable pressure when the clutch hydraulic cylinder that advances, promote forward gear piston 1 to left movement, the friction disk 2 of forward gear clutch is contacted with friction plate 3, forward clutch enters bonding state, planet carrier 9 and sun gear 8 are linked together, because sun gear 8 links to each other with CVT driving wheel input shaft by spline, thereby realized 1: 1 transmission of power, this moment, transmission efficiency was the highest, and this also meets forward gear long actual conditions service time.
The power transmission line of forward gear is: engine output shaft-fluid torque converter-switching mechanism input shaft-forward clutch-sun gear-CVT driving wheel input shaft.
The utility model can also have other mode of execution, and the technological scheme that the equal replacement of all employings or equivalent transformation form all drops within the claimed scope of the utility model.
Claims (2)
1. automobile mainly partly is comprised of input shaft component, planet carrier, planetary pinion, sun gear, gear ring, forward clutch, the break that reverses gear etc. with the advance switching mechanism that reverses gear of stepless speed variator, it is characterized by planet carrier and the input shaft component connects firmly together by the thread form tooth, keep synchronized with the reverse gear input shaft of switching mechanism of advancing all the time.
2. automobile as claimed in claim 1 is with the stepless speed variator switching mechanism that reverses gear that advances, the outside friction disc of forward clutch connects firmly together by uniform thread form tooth and input shaft component, the inner attrition piece of forward clutch connects firmly together by being distributed in inboard thread form tooth and sun gear component, the outside friction disc of break of reversing gear connects firmly together by the thread form tooth around uniform and the middle casing of stepless speed variator, and the inner attrition piece of the break that reverses gear connects firmly together by thread form tooth and the gear ring outer shroud thread form tooth that is distributed in the inboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220551567 CN202901250U (en) | 2012-10-26 | 2012-10-26 | Forward gear and reverse gear switching mechanism of continuously variable transmission (CVT) for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220551567 CN202901250U (en) | 2012-10-26 | 2012-10-26 | Forward gear and reverse gear switching mechanism of continuously variable transmission (CVT) for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202901250U true CN202901250U (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220551567 Expired - Fee Related CN202901250U (en) | 2012-10-26 | 2012-10-26 | Forward gear and reverse gear switching mechanism of continuously variable transmission (CVT) for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202901250U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106801725A (en) * | 2017-03-03 | 2017-06-06 | 武汉理工大学 | A kind of mechanical device for realizing the quick rotating of shafting |
| CN106838150A (en) * | 2017-03-17 | 2017-06-13 | 南京泓凯动力系统科技有限公司 | A kind of mechanical-electric actuating unit |
| CN107084231A (en) * | 2017-06-09 | 2017-08-22 | 淄博悍铃机械有限公司 | Multifunctional small tiller |
| CN110242715A (en) * | 2018-03-08 | 2019-09-17 | 本田技研工业株式会社 | The forward-reverse switching mechanism of stepless transmission |
| CN111336230A (en) * | 2020-04-01 | 2020-06-26 | 中国北方车辆研究所 | Hydraulic phase switching mechanism suitable for non-circular continuously variable transmission |
-
2012
- 2012-10-26 CN CN 201220551567 patent/CN202901250U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106801725A (en) * | 2017-03-03 | 2017-06-06 | 武汉理工大学 | A kind of mechanical device for realizing the quick rotating of shafting |
| CN106801725B (en) * | 2017-03-03 | 2019-05-24 | 武汉理工大学 | A kind of mechanical device for realizing the quick positive and negative rotation of shafting |
| CN106838150A (en) * | 2017-03-17 | 2017-06-13 | 南京泓凯动力系统科技有限公司 | A kind of mechanical-electric actuating unit |
| CN107084231A (en) * | 2017-06-09 | 2017-08-22 | 淄博悍铃机械有限公司 | Multifunctional small tiller |
| CN110242715A (en) * | 2018-03-08 | 2019-09-17 | 本田技研工业株式会社 | The forward-reverse switching mechanism of stepless transmission |
| CN111336230A (en) * | 2020-04-01 | 2020-06-26 | 中国北方车辆研究所 | Hydraulic phase switching mechanism suitable for non-circular continuously variable transmission |
| CN111336230B (en) * | 2020-04-01 | 2021-07-16 | 中国北方车辆研究所 | Hydraulic phase switching mechanism suitable for non-circular continuously variable transmission |
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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: 20130424 Termination date: 20131026 |