CN1062409A - Belt-differential gear speed-variable box - Google Patents
Belt-differential gear speed-variable box Download PDFInfo
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- CN1062409A CN1062409A CN 90109747 CN90109747A CN1062409A CN 1062409 A CN1062409 A CN 1062409A CN 90109747 CN90109747 CN 90109747 CN 90109747 A CN90109747 A CN 90109747A CN 1062409 A CN1062409 A CN 1062409A
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- differential gear
- gear set
- gearbox
- belt
- velocity
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Abstract
The present invention is used in combination infinite variable speed belt gearbox and differential gear set, provides a kind of high efficiency, long-lived, and the transition between the velocity ratio is enough level and smooth, has the gearbox of very wide velocity ratio.This gearbox is suitable for using on vehicle.
Description
A) technical field:
Device of the present invention is relevant with for motor vehicle gearbox, and it comprises a differential gear set, a belt gearbox and a velocity attitude transducer.This device can suitably be delivered to the power of motor on the output shaft.
B) prior art:
As an employed gearing of vehicle, a wide gear range is needed, and low velocity ratio can provide high pulling torque (slow-speed of revolution) to output shaft; High velocity ratio can provide high rotating speed to output shaft under the prerequisite that guarantees the normal operation of motor.In addition, seamlessly transit as much as possible between the velocity ratio, the high efficiency and the durability of gearing also all need.Present employed speed-changing gear box efficient height, the life-span is long, but the speed change that can realize is the jump of several levels of broad of being separated by.The strap speed varying case can provide stepless change, but wherein employed belt is easy to damage, and needs more maintenance work.Some suggestion (as No. 4090320, U. S. Patent) attempts to use simultaneously above-mentioned two kinds of devices to provide a kind of velocity ratio wide, long-lived gearbox.But its velocity ratio of the mechanism that this patent is advised and life-span also need further improvement.
Summary of the invention
The purpose of this invention is to provide a kind of high efficiencyly, long-lived, the transition between the velocity ratio is enough level and smooth, has the gearbox of very wide velocity ratio.
Realize that belt-differential gear speed-variable box of the present invention comprises following parts: a gearbox input shaft; An output shaft of gear-box; A differential gear set, it is connected with other parts by three axles, and (these three axles are called first of differential gear set, second of differential gear set, the 3rd of differential gear set.Be worth pointing out that these appellations are the convenience in order to narrate just.As long as the gear of suitably adjusting some gear of gearbox than and the number of mesomerism gear, any of these three axles in principle can be as first of differential gear set, or second, or the 3rd .); The continuously adjustable belt gearbox of self velocity ratio, it comprises that two belt pulleys and one are these two belts that belt pulley links together; The velocity attitude transducer that can do forward and reverse coupling (each needs a velocity ratio) and zero coupling (not coupling mutually); And some clutches and (or) retaining brake.This invention is characterised in that: the gearbox input shaft is coupled mutually with first of differential gear set selectively by a clutch; The gearbox input shaft is also by velocity attitude transducer and second coupling mutually of belt gearbox (the two order there is no significance) and differential gear set; The 3rd of differential gear set is as output shaft of gear-box; Also have two retaining brakes respectively can first of locking differential gear set and second of differential gear set at last.
As above the gearbox device of configuration can be realized following several transmission mode (narrating order is by falling back-zero-low-Gao-very high forward velocity):
1) reverse mode: first mutual decoupling of gearbox input shaft and differential gear set (respective clutch disconnection), first of differential gear set is by the retaining brake locking, the gearbox input shaft is by belt gearbox and be in the velocity attitude transducer of reverse coupled state and second coupling (retaining brake that differential gear set is second is in releasing state) mutually of differential gear set, thereby differential gear set the 3rd (being output shaft of gear-box) is reversed backward.Change self velocity ratio (rotating ratios of two belt pulleys of belt gearbox) of belt gearbox, the velocity ratio of whole gearbox changes thereupon.
2) slow forward mode: be in outside the forward couple state except the velocity attitude transducer, other parts are as being in together in the reverse mode, and self velocity ratio of belt gearbox is heightened by low, and the velocity ratio of whole gearbox is also heightened thereupon.
3) forward mode: the retaining brake that differential gear set is first is in releasing state, the Clutch Coupling between first of the input shaft of gearbox and the differential gear set (this coupling makes the 3rd of differential gear set that the trend of rotating forward be arranged); The input shaft of gearbox is also by belt gearbox and be in the velocity attitude transducer of reverse coupled state and second coupling of differential gear set (this coupling makes the 3rd of differential gear set that the trend of rotating backward be arranged).The actual motion of differential gear set the 3rd (being output shaft of gear-box) is motion forward, and self velocity ratio of belt gearbox is turned down by height, and the velocity ratio of whole gearbox will uprise thereupon.
4) normal cruise mode: the retaining brake that differential gear set is first is in releasing state, Clutch Coupling between first of the input shaft of gearbox and the differential gear set, the velocity attitude transducer is in zero couple state, second of differential gear set is by its retaining brake locking, at this moment, the coupling between gearbox input shaft and the output shaft of gear-box is simple gears.
5) special fast pattern: be in outside the forward couple state except the velocity attitude transducer, other parts are as being in together in the forward mode.Self velocity ratio of belt gearbox is heightened by low, and it is very high that the velocity ratio of whole gearbox can become thereupon.
As a selection, the top speed of aforementioned slow forward mode and the minimum speed of forward mode are preferably all elected half (perhaps a little overlapping between two speed is necessary) of the normal cruising speed of vehicle as.Like this, can not only guarantee level and smooth transition between these two patterns, and the peak output that belt gearbox is born is no more than the output power of motor in each pattern.In the velocity range of forward mode, along with the increase of car speed, the power that belt gearbox bears will promptly reduce.In the velocity range of the fast pattern of spy, the power that belt gearbox bears is compared littler with the output power of motor.In normal cruise mode, belt gearbox is in the locking state.
The velocity attitude transducer can be a kind of like this device, and it comprises two axially consistent gear and twin-direction clutches.These two gears intermesh by a mesomerism gear.Twin-direction clutch can be selectively with these two gears in a coupling, can not be coupled with these two gears yet.
The velocity attitude transducer also can be another kind of device, and it comprises a simple clutch and the gear that can axially move.This gear can be selectively with two with the gear of respectively doing forward and reverse rotation that other parts are coupled among one be meshed.
Differential gear set can be made up of a simple planetary gear set.This planetary gear set comprises a ring gear, central gear and one are equipped with some planetary frameworks, and they are contained in respectively on three axles, and a good selection is, these three axles are first of differential gear set successively, the 3rd of second of differential gear set and differential gear set.
By these narrations as can be seen, the variator ratio range of this gearbox very wide (approximately be belt gearbox self velocity ratio three times), the transition between each transmission mode is smoother.Because in most of times of vehicle driving, by the most of gear transmission power or all, belt gearbox only transmits the sub-fraction or the transmitted power not fully of the output power of motor, so the life-span of whole gearbox is longer, efficient is also higher.
Brief Description Of Drawings
Accompanying drawing 1 is a schematic representation of realizing first example of belt-differential gear speed-variable box of the present invention.Accompanying drawing 2 is schematic representation of second example.
The invention example in detail
In the belt-differential gear speed-variable box shown in the accompanying drawing 1, planetary gear set 4 comprises ring gear 5; Central gear 7 and some planetary frameworks 6 are housed, ring gear 5(and axle thereof) can be coupled mutually with gearbox input shaft 1 by clutch 3, framework 6 is contained on the output shaft of gear-box 9, central gear 7 is contained on the axle 8, ring gear 5 can be by retaining brake 10 lockings, central gear 7 and axle 8 can be by retaining brake 11 lockings, velocity attitude transducer 17 is by gear 18,19,20 and twin-direction clutch 21 form, its middle gear 18 and gear 2 engagements that are contained on the gearbox input shaft 1, gear 20 is meshed with gear 18 by gear 19, twin-direction clutch 21 can make axle 16 and gear 18 couplings (velocity attitude transducer 17 is in the reverse coupled state at this moment), can make axle 16 and gear 20 couplings (velocity attitude transducer 17 is in the forward couple state at this moment) again, axle 16 and gear 18,20 all are not coupled (this moment velocity attitude transducer 17 be in zero couple state).Belt gearbox 12 is by the adjustable belt pulley of triangular groove and groove width 13 is arranged, 14 and v belt 15 form, if the groove of belt pulley 13 broadens, the groove of belt pulley 14 narrows down, self velocity ratio of belt gearbox 12 rotating ratio of belt pulley 13 (belt pulley 14 with) diminishes, otherwise then become big, belt pulley 13 and 14 is contained in respectively on axle 16 and the axle 8.
In the belt-differential gear speed-variable box shown in the accompanying drawing 1, can realize following several transmission mode:
1) reverse mode: clutch 3 is in non-coupled state, retaining brake 10 locking ring gears 5, and retaining brake 11 discharges, and velocity attitude transducer 17 is in the reverse coupled state, changes self velocity ratio of belt gearbox 12, and the velocity ratio of whole gearbox changes thereupon.
2) slow forward mode: clutch 3 is in non-coupled state; retaining brake 10 locking ring gears 5, retaining brake 11 discharges, and velocity attitude transducer 17 is in the forward couple state; self velocity ratio of belt gearbox 12 is heightened by low, and the velocity ratio of whole gearbox is also heightened thereupon.
3) forward mode: clutch 3 is in couple state, retaining brake 10 discharges ring gear 5, and retaining brake 11 is in releasing state, and velocity attitude transducer 17 is in the reverse coupled state, self velocity ratio of belt gearbox 12 is turned down by height, and the velocity ratio of whole gearbox will uprise thereupon.
4) normal cruise mode: retaining brake 10 is in releasing state, clutch 3 is in couple state, and velocity attitude transducer 17 is in zero couple state, and central gear 7 is by stop valve 11 lockings, at this moment, the coupling between gearbox input shaft 1 and the output shaft of gear-box 9 is simple gears.
5) special fast pattern: clutch 3 is in couple state, retaining brake 10 discharges, and retaining brake 11 discharges, and velocity attitude transducer 17 is in the forward couple state, self velocity ratio of belt gearbox 12 is heightened by low, and it is very high that the velocity ratio of whole gearbox will become thereupon.
In the typical application example, the top speed of slow forward mode and the minimum speed of forward mode are elected half of the normal cruising speed of vehicle as, like this, can guarantee level and smooth transition between these two patterns, and the belt gearbox peak output of bearing all is no more than the output power of motor in each pattern.In the velocity range of forward mode, along with the increase of car speed, the power that belt gearbox bears will promptly reduce.In the velocity range of the fast pattern of spy, the power that belt gearbox bears is compared also quite little with the output power of motor, and in normal cruise mode, belt gearbox is in the locking state.
In the typical application example, self velocity ratio of belt gearbox is approximately 6: 1, the velocity ratio of whole gearbox is approximately 18: 1, and in the stage of vehicle launch and in the stage of normal cruise mode transition, this gearbox respectively has a little rough process.
In the belt-differential gear speed-variable box shown in the accompanying drawing 2, velocity attitude transducer 17 comprises clutch 22 and the gear that can axially move 23.When gear 23 is meshed with gear 2 on being contained in gearbox input shaft 1, when clutch 22 was in couple state, this velocity attitude transducer 17 was in the reverse coupled state; When gear 23 moves to left, be meshed with gear 25 on being contained in gearbox input shaft 1 by mesomerism gear 24, when clutch 22 was in couple state, this velocity attitude transducer 17 was in the forward couple state; When clutch 22 was in non-coupled state, this velocity attitude transducer 17 was in zero couple state.The gearbox of the situation of these other parts of gearbox and accompanying drawing 1 is similar, and the situation of each transmission mode of this gearbox is identical with the relevant pattern of the gearbox of accompanying drawing 1.
Above example only is the demonstration and the explanation of principle of the present invention, and the scope of patent protection sees claims of the present invention.
Claims (4)
1, a kind of belt--differential gear gearbox, it comprises following parts: a gearbox input shaft; An output shaft of gear-box; A differential gear set, it is connected with other parts by three axles, and (these three axles are called first of differential gear set, second of differential gear set, the 3rd of differential gear set is worth pointing out, these appellations are the convenience in order to narrate just, as long as suitably adjust the gear ratio of some gear of gearbox and the number of mesomerism gear, any of these three axles in principle can be as first of differential gear set, or second, or the 3rd); The continuously adjustable belt gearbox of velocity ratio, it comprises that two belt pulleys and one are these two belts that belt pulley links together; The velocity attitude transducer that can do forward and reverse coupling (each needs a velocity ratio) and zero coupling (not coupling mutually); And some clutches and (or) retaining brake, this invention is characterised in that: the gearbox input shaft by clutch selectively with first coupling mutually of differential gear set; The gearbox input shaft is also by velocity attitude transducer and second coupling mutually of belt gearbox (the two order there is no significance) and differential gear set; The 3rd output shaft of differential gear set as gearbox; Also have two retaining brakes respectively can first of locking differential gear set and second of differential gear set at last.
2, belt-differential gear speed-variable box according to claim 1, its differential gear set are simple planetary gear set.This planetary gear set comprises a ring gear, and central gear and one are equipped with some planetary frameworks, and they are contained in respectively on three axles, and these three axles are first of differential gear set successively, the 3rd of second of differential gear set and differential gear set.
3, belt-differential gear speed-variable box according to claim 1, its velocity attitude transducer comprise two axially consistent gear and twin-direction clutches.These two gears intermesh by a mesomerism gear, twin-direction clutch can with a coupling in these two gears, can not be coupled with these two gears yet.
4, belt-differential gear speed-variable box according to claim 1, its velocity attitude transducer comprise a simple clutch and the gear that can axially move.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90109747 CN1062409A (en) | 1990-12-10 | 1990-12-10 | Belt-differential gear speed-variable box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90109747 CN1062409A (en) | 1990-12-10 | 1990-12-10 | Belt-differential gear speed-variable box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1062409A true CN1062409A (en) | 1992-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90109747 Pending CN1062409A (en) | 1990-12-10 | 1990-12-10 | Belt-differential gear speed-variable box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1062409A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333082A (en) * | 2015-11-26 | 2016-02-17 | 欧阳恒 | Novel stepless speed change device |
| WO2022261932A1 (en) * | 2021-06-18 | 2022-12-22 | 舍弗勒技术股份两合公司 | Speed reduction mechanism and vehicle |
-
1990
- 1990-12-10 CN CN 90109747 patent/CN1062409A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333082A (en) * | 2015-11-26 | 2016-02-17 | 欧阳恒 | Novel stepless speed change device |
| WO2022261932A1 (en) * | 2021-06-18 | 2022-12-22 | 舍弗勒技术股份两合公司 | Speed reduction mechanism and vehicle |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C03 | Withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |