CN206571916U - Automatic transmission and the vehicle with the automatic transmission - Google Patents
Automatic transmission and the vehicle with the automatic transmission Download PDFInfo
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- CN206571916U CN206571916U CN201720107653.9U CN201720107653U CN206571916U CN 206571916 U CN206571916 U CN 206571916U CN 201720107653 U CN201720107653 U CN 201720107653U CN 206571916 U CN206571916 U CN 206571916U
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- gear
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- automatic transmission
- clutch
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Abstract
The automatic transmission and vehicle that the utility model is provided include four planetary gearsets, four brakes and two clutches, pass through the Reasonable Arrangement of four planetary gearsets, four brakes and two clutches, the automatic transmission that the utility model is provided is set to be reversed gear with seven forward gears and three, on the premise of its transmission efficiency and planet wheel speed is ensured, because the automatic transmission only has three degree of freedom, therefore the control of two elements is passed through, the control of gear can be completed, actuation member is less, reduces control difficulty.
Description
Technical field
The utility model is related to automatic transmission field, especially a kind of automatic transmission and with the automatic transmission
Vehicle.
Background technology
Automatic transmission (Automatic Transmission, AT) generally comprise multiple planetary gearsets, brake and
Clutch, multiple planetary gearsets, brake and clutch are linked together by certain mode, the torsion produced when engine
When square enters automatic transmission, automatic transmission can according to different working methods it is multistage change moment of torsion into it, and
Moment of torsion after change is outwards exported.From theory of mechanics, mechanism has the number that the condition for determining to move is mechanism power source
Amount is equal to mechanism rotating speed number of degrees of freedom,.Because AT is to be implemented in combination with different gears by the combination of different clutch/brakes, i.e.,
The free degree of automatic transmission is constrained by brake/clutch, so that reduction degree of freedom in system purpose is reached, it is final to ensure certainly
Dynamic speed changer has the motion determined.That is, for the single power source automatic transmission that a degree of freedom in system number is N,
It is that automatic transmission (N-1) the individual rotating speed is limited by operating elements such as brake/clutch with the condition for determining to move
The free degree.
In general, the gear that automatic transmission has is more, the power performance and fuel-economy performance of automobile are better, but
It is, the quantity of planetary gearsets number, clutch and brake, and driving member connection determines transmission to a certain extent
The complexity of scenario-frame arrangement.Number of degrees of freedom, increases the operating element increasing number for conversion of being shifted gears between adjacent gear,
Control difficulty increase will all be caused, and volume, efficiency and the bearing capacity of automatic transmission produce direct influence.Each
The power transmission line of gear depends on transmission scheme, should avoid the occurrence of internal power circulation, will influence each gear transmission efficiency.
With the automobile emission regulation increasingly requirement of harshness and the raising to fuel economy requirement, gear-change of automatic transmissions
Position demand increases.For planetary gearsets automatic transmission, typically increase gear by two kinds of approach：One is increase planetary gear
The quantity of group；Two be increase free degree quantity, but the quantity of increase planetary gearsets can significantly increase the body of automatic transmission
Product and weight, increase free degree quantity are easily caused increasing for actuation member, manipulation difficulty during increase gearshift.Therefore, seeking
A kind of planetary gearsets and operating element quantity best of breed, compact conformation, the efficient planetary automatic speed-changing mechanism of transmission turn into
Major vehicle enterprises or the key of research and development institution's product development.
At this stage, seven gear transmissions that current passenger car in the market is used mainly have following several：
One, runs quickly 7AT schemes, and it can realize 7 forward gears and 2 reverse gear, and the automatic transmission includes 2 interior external toothings
Single star row, 1 composite bar (can be analyzed to 1 interior external toothing list star row and 1 interior external toothing double star row), 4 brakes and 3
Clutch.The program has 7 operating elements, and the realization of each gear needs to combine three operating elements, i.e., it is four free
Degree system.The product is mainly used in carrying the vehicle such as C200, S500 under benz BENZ.
Two, add special gram 7AT schemes, and it can realize 7 forward gears and 1 reverses gear, and the automatic transmission includes nibbling inside and outside 4
Close single star row, 4 brakes, 3 clutches and 2 one-way clutch.The program has 9 each operating elements, each gear
Realization needs to combine three operating elements, i.e., it is four-degree-of-freedom system.The product be mainly used in carrying Infiniti Q50,
The vehicles such as QX70.
Although existing layout scheme can realize the conversion of seven gears, the layout scheme causes the freedom of product
Degree is more, and actuation member is more, and control during gearshift is complex.
Utility model content
The purpose of this utility model is to provide a kind of automatic transmission and the vehicle with the automatic transmission, and this is automatic
Speed changer has three degree of freedom, and the actuation member of demand is less, reduces control difficulty.
The utility model provides a kind of automatic transmission, including input shaft, casing, the first planetary gearsets, the second planet
Gear train, third planet gear train, fourth planet gear train.First brake, second brake, the 3rd brake, the 4th system
Dynamic device, first clutch, second clutch and output shaft；
First planetary gearsets include the first sun gear, the first planetary gear, the first gear ring and the first planet carrier, described
First planetary gear is rotatably supported on first planet carrier, and first planetary gear be located at first sun gear with
Between first gear ring, and engaged with first sun gear and first gear ring；
Second planetary gearsets include the second sun gear, the second planetary gear, the second gear ring and the second planet carrier, described
Second planetary gear is rotatably supported on second planet carrier, and second planetary gear be located at second sun gear with
Between second gear ring, and engaged with second sun gear and second gear ring；
The third planet gear train includes the 3rd sun gear, the third line star-wheel, the 3rd gear ring and the third line carrier, described
The third line star-wheel is rotatably supported in the third line carrier, and the third line star-wheel be located at the 3rd sun gear with
Between 3rd gear ring, and engaged with the 3rd sun gear and the 3rd gear ring；
The fourth planet gear train includes the 4th sun gear, fourth line star-wheel, the 4th gear ring and fourth line carrier, described
Fourth line star-wheel is rotatably supported in the fourth line carrier, and the fourth line star-wheel be located at the 4th sun gear with
Between 4th gear ring, and engaged with the 4th sun gear and the 4th gear ring；
First gear ring is connected with second planet carrier, and first sun gear is connected with second sun gear,
Second gear ring is connected with the third line carrier, and the third line carrier is connected with the fourth line carrier, and the described 3rd
Sun gear is connected with the 4th gear ring, and the input shaft is connected with the 3rd sun gear and the 4th gear ring, the output shaft
It is connected with first planet carrier；
First sun gear and second sun gear are connected by first brake with the casing, and described
One gear ring and second planet carrier are connected by the second brake with the casing, and the 3rd gear ring passes through described
Three brakes are connected with the casing, and the 4th sun gear is connected by the 4th brake with the casing；
The input shaft is connected by the first clutch with second planet carrier, and the second clutch may be selected
Ground makes the third planet gear train and the fourth planet gear train be integral and be rotated.
Further, first planetary gearsets, second planetary gearsets, the third planet gear train and institute
State fourth planet gear train to lay successively, the output end of the input of the input shaft and the output shaft is respectively positioned on described first
Side of the planetary gearsets away from direction where second planetary gearsets.
Further, first brake is located at first planetary gearsets away from the second planetary gearsets institute
Side, the second brake is located between first planetary gearsets and second planetary gearsets, described the
Three brakes are located at along perpendicular to described with the third planet gear train to be inputted on axial same section, and the described 4th
Brake is located at the fourth planet gear train away from the side where the third planet gear train, the first clutch position
Between second planetary gearsets and the third planet gear train.
Further, the input shaft passes through the second clutch and second gear ring and the third line carrier phase
Even.
Further, the second clutch be arranged at second planetary gearsets and the third planet gear train it
Between.
Further, the second clutch is arranged between the 4th sun gear and the fourth line carrier, described
Second clutch is located at the fourth planet gear train away from the side where the third planet gear train.
Further, the second clutch is located between the 3rd gear ring and the third line carrier, or described the
Between four gear rings and the fourth line carrier, or between the 4th gear ring and the 4th sun gear.
Further, the second clutch be located at the third planet gear train and the fourth planet gear train it
Between.
Further, when the automatic transmission is located at a gear, first brake and the 3rd brake are in
Closure state；When the automatic transmission is located at two gears, first brake and the 4th brake are in closure state；
When the automatic transmission is located at three gears, first brake and the second clutch are in closure state；It is described automatic
When speed changer is located at four gears, first brake and the first clutch are in closure state；The automatic transmission position
When five keep off, the first clutch and the second clutch are in closure state；When the automatic transmission is located at six gears,
4th brake and the first clutch are in closure state；When the automatic transmission is located at seven gears, the described 3rd
Brake and the first clutch are in closure state；When the automatic transmission is located at gear, the second brake
And the 3rd brake is in closure state；When the automatic transmission is located at two gear, the second brake and described
4th brake is in closure state；The automatic transmission be located at three gear when, the second brake and described second from
Clutch is in closure state.
The utility model additionally provides a kind of vehicle, and the vehicle includes automatic transmission provided by the utility model.
In summary, the reasonable cloth that the utility model passes through four planetary gearsets, four brakes and two clutches
If making the automatic transmission that the utility model is provided be reversed gear with seven forward gears and three, ensureing its transmission efficiency and row
On the premise of star-wheel rotating speed, because the automatic transmission only has three degree of freedom, therefore pass through the control of two elements, you can
The control of gear is completed, actuation member is less, reduces control difficulty.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model
Art means, and being practiced according to the content of specification, and in order to allow above and other purpose of the present utility model, feature
It can be become apparent with advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Brief description of the drawings
The structural representation for the automatic transmission that Fig. 1 provides for the utility model first embodiment.
Fig. 2 is drive path schematic diagram of the automatic transmission when one keeps off shown in Fig. 1.
Drive path schematic diagram of the automatic transmission when two keep off shown in Fig. 3 Fig. 1.
Drive path schematic diagram of the automatic transmission when three keep off shown in Fig. 4 Fig. 1.
Drive path schematic diagram of the automatic transmission when four keep off shown in Fig. 5 Fig. 1.
Drive path schematic diagram of the automatic transmission when five keep off shown in Fig. 6 Fig. 1.
Drive path schematic diagram of the automatic transmission when six keep off shown in Fig. 7 Fig. 1.
Drive path schematic diagram of the automatic transmission when seven keep off shown in Fig. 8 Fig. 1.
Drive path schematic diagram of the automatic transmission when one keeps off shown in Fig. 9 Fig. 1.
Drive path schematic diagram of the automatic transmission when two keep off shown in Figure 10 Fig. 1.
Drive path schematic diagram of the automatic transmission when three keep off shown in Figure 11 Fig. 1.
The structural representation for the automatic transmission that Figure 12 provides for the utility model second embodiment.
The structural representation for the automatic transmission that Figure 13 provides for the utility model 3rd embodiment.
The structural representation for the automatic transmission that Figure 14 provides for the utility model fourth embodiment.
The structural representation for the automatic transmission that Figure 15 provides for the embodiment of the utility model the 5th.
Embodiment
Further to illustrate that the utility model is to reach technological means and effect that predetermined utility model purpose is taken,
Below in conjunction with accompanying drawing and preferred embodiment, the utility model is described in detail as follows.
The utility model provides a kind of automatic transmission and the vehicle with the automatic transmission, the automatic transmission
There is three degree of freedom, the actuation member of demand is less, reduces control difficulty.
The structural representation for the automatic transmission that Fig. 1 provides for the utility model first embodiment, as shown in figure 1, this reality
The automatic transmission provided with new first embodiment includes input shaft 11, casing 21, the first planetary gearsets 30, the second planet
Gear train 40, third planet gear train 50, fourth planet gear train 60, the first brake 71, second brake the 72, the 3rd are braked
Device 73, the 4th brake 74, first clutch 81, second clutch 82 and output shaft 12.
First planetary gearsets 30 include the first sun gear 31, the first planetary gear 32, the first gear ring 33 and the first planet carrier
34, the first planetary gear 32 can be rotatably supported on the first planet carrier 34 by rolling or sliding bearing, and the first planet
Wheel 32 is located between the first sun gear 31 and the first gear ring 33, and is engaged with the first sun gear 31 and the first gear ring 33.
Second planetary gearsets 40 include the second sun gear 41, the second planetary gear 42, the second gear ring 43 and the second planet carrier
44, the second planetary gear 42 can be rotatably supported on the second planet carrier 44 by rolling or sliding bearing, and the second planet
Wheel 42 is located between the second sun gear 41 and the second gear ring 43, and is engaged with the second sun gear 41 and the second gear ring 43.
Third planet gear train 50 includes the 3rd sun gear 51, the third line star-wheel 52, the 3rd gear ring 53 and the third line carrier
54, the third line star-wheel 52 can be rotatably supported in the third line carrier 54 by rolling or sliding bearing, and third planet
Wheel 52 is located between the 3rd sun gear 51 and the 3rd gear ring 53, and is engaged with the 3rd sun gear 51 and the 3rd gear ring 53.
Fourth planet gear train 60 includes the 4th sun gear 61, fourth line star-wheel 62, the 4th gear ring 63 and fourth line carrier
64, fourth line star-wheel 62 can be rotatably supported in fourth line carrier 64 by rolling or sliding bearing, and fourth planet
Wheel 62 is located between the 4th sun gear 61 and the 4th gear ring 63, and is engaged with the 4th sun gear 61 and the 4th gear ring 63.
First gear ring 33 can by spline, weld or the mode such as be integrally formed and be directly connected with the second planet carrier 44,
One sun gear 31 can by spline, weld or the mode such as be integrally formed and be connected with the second sun gear 41, the second gear ring 43 can be with
By spline, weld or the mode such as be integrally formed and be directly connected with the third line carrier 54, the third line carrier 54 can by spline,
The mode such as weld or be integrally formed directly with fourth line carrier 64 to be connected, the 3rd sun gear 51 can pass through spline, welding or one
The mode such as body formed is directly connected with the 4th gear ring 63.
Input shaft 11 can by spline, weld or be integrally formed etc. mode directly with the 3rd sun gear 51 and the 4th gear ring
63 are connected, and the power that dynamical element such as hydraulic moment variator are inputted is transferred in automatic transmission, in third planet gear train 50
And fourth planet gear train 60, when participating in power transmission, the connected mode makes the 3rd sun gear 51 and the 4th gear ring 63 respectively the
All the time as power input part in three planetary gearsets 50 and fourth planet gear train 60.Input the power warp of automatic transmission
Through being spread out of after the first planet carrier 34 by output shaft 12 after each shift transformation, i.e., the first planet carrier 34 is in the first planetary gearsets 30
In all the time as power output part.
In the present embodiment, the first planetary gearsets 30, the second planetary gearsets 40, third planet gear train 50 and the 4th
Power input direction of the planetary gearsets 60 along input shaft 11 is laid successively, the output of the input and output shaft 12 of input shaft 11
End is respectively positioned on side of first planetary gearsets 30 away from the place direction of the second planetary gearsets 40.
First sun gear 31 is connected by the first brake 71 with casing 21, due to the second sun gear 41 and the first sun gear
31 are connected, therefore the second sun gear 41 is connected again by the first brake 71 with casing 21.Closed when the first brake 71 is in
During conjunction state, the first sun gear 31 and the second sun gear 41 are stationary parts, and the first sun gear 31 limits the first planetary gear
The one degree of freedom of group 30, the second sun gear 41 limits the one degree of freedom of the second planetary gearsets 40；When the first brake 71
During in patent conjunction state, the first sun gear 31 and the second sun gear 41 can be rotated.
First gear ring 33 is connected by second brake 72 with casing 21, due to the first gear ring 33 and the phase of the second planet carrier 44
Connect, therefore the second planet carrier 44 is connected again by second brake 72 with casing 21.I.e. when second brake 72 is in closed form
During state, the first gear ring 33 and the second planet carrier 44 are stationary parts, and the first gear ring 33 limits the one of the first planetary gearsets 30
The individual free degree, the second planet carrier 44 limits the one degree of freedom of the second planetary gearsets 40；When second brake 72 is in patent
During conjunction state, the first gear ring 33 and the second planet carrier 44 can be rotated.
3rd gear ring 53 is connected by the 3rd brake 73 with casing 21, i.e., when the 3rd brake 73 is in closure state
When, the 3rd gear ring 53 is stationary parts, the one degree of freedom of the 3rd gear ring 53 limitation third planet gear train 50；When the 3rd braking
When device 73 is in patent conjunction state, the 3rd gear ring 53 can be rotated.
4th sun gear 61 is connected by the 4th brake 74 with casing 21, i.e., when the 4th brake 74 is in closure state
When, the 4th sun gear 61 is stationary parts, the one degree of freedom of the 4th sun gear 61 limitation fourth planet gear train 60；When the 4th
When brake 74 is in patent conjunction state, the 4th sun gear 61 can be rotated.
In the present embodiment, the first brake 71, second brake 72, the 3rd brake 73 and the 4th brake 74
Think drum brake band or multi-disk wet type brake.
Input shaft 11 is connected by first clutch 81 with the second planet carrier 44, when first clutch 81 is in closure state
When, power can enter the second planet carrier 44 by input shaft 11；When first clutch 81 is in patent conjunction state, input shaft 11
Disconnected with the second planet carrier 44.
Input shaft 11 is connected by second clutch 82 with the gear ring 43 of the third line carrier 54 and second, due to input shaft 11 with
3rd sun gear 51 is connected, i.e., when second clutch 82 is closed, and the 3rd sun gear 51 can pass through second clutch 82 and the
Three planet carriers 54 are connected, and now, third planet gear train 50 is rotated as an entirety.Again due to the third line carrier 54 with
Fourth line carrier 64 is connected, and the 3rd sun gear 51 is connected with the 4th gear ring 63, i.e., when second clutch 82 is closed, the 4th gear ring
63 can be connected by second clutch 82 with fourth line carrier 64, that is to say, that third planet gear train 50 and fourth planet
Gear train 60 is rotated collectively as an entirety at this moment.
When first clutch 81 is in closure state in patent conjunction state, but second clutch 82, input shaft 11 is passed
The power passed can be transferred to the second gear ring 43 via second clutch 82.When first clutch 81 and second clutch 82 are in
During closure state, whole automatic transmission, which is integral, to be rotated.
In the present embodiment, first clutch 81 and second clutch 82 can be multiple-piece wet clutch or dog
Clutch.
In the present embodiment, the first brake 71 is located at the first planetary gearsets 30 away from where the second planetary gearsets 40
Side, second brake 72 be located between the first planetary gearsets 30 and the second planetary gearsets 40, with preferably simultaneously right
First gear ring 33 and the second planet carrier 44 are braked, and the 3rd brake 73 is located at along perpendicular to defeated with third planet gear train 50
On the same section for the axial direction for entering axle 11, the 4th brake 74 is located at fourth planet gear train 60 away from third planet gear
Side where group 50, first clutch 81 and second clutch 82 are respectively positioned on the second planetary gearsets 40 and third planet gear
Between group 50.The laying mode makes the structure of automatic transmission more compact.
The utility model can make four planets of interconnection by the control to four brakes and two clutches
Gear train reverses gear with seven forward gears and three, and the realization of each gear only needs to manipulate two elements, the i.e. automatic change
Fast utensil has three degree of freedom.Table one is that, in each gear, brake and clutch state in which are, it is necessary to explain
It is, when occurring solid black circle in form, to represent that the clutch or brake are in closure state, when form is blank,
The clutch or brake are in patent conjunction state.
Table one：The corresponding relation of each gear of automatic transmission and each operation element
(wherein B1 represents that the first brake 71, B2 represent that second brake 72, B3 represent that the 3rd brake 73, B4 are represented
4th brake 74, C1 represent that first clutch 81, C2 represent that second clutch 82, k1, k2, k3 and k4 are respectively four planets
Gear train characteristic parameter, its numerical value is equal to the ratio between number of teeth of gear ring and sun gear in the planetary gearsets)
Fig. 2 is drive path schematic diagram of the automatic transmission when one keeps off shown in Fig. 1, as shown in Fig. 2 when this practicality is new
When the automatic transmission that type is provided is located at a gear, the first brake 71 and the 3rd brake 73 are in closure state, due to first
Brake 71 is in closure state, and the first sun gear 31 and the second sun gear 41 are stationary parts, due to the 3rd brake 73
In closure state, the 3rd gear ring 53 is stationary parts, and the power that input shaft 11 is inputted is through sequentially passing through third planet gear train
50th, exported after the second planetary gearsets 40 and the first planetary gearsets 30 by output shaft 12, the power transmission route of the gear
As shown in thicker black lines in Fig. 2.Now, the gearratio of the gear is：
I1=(1+k2+k3+k3*k2+k4+k4*k2+k4*k3+k4*k3*k2)/(k4*k3).
The power transmission route is：Sun gear 51 → the third line, 52 → the third line of the star-wheel carrier of input shaft 11 → the 3rd 54 →
The planet carrier of second gear ring, 43 → the second planetary gear, 42 → the second planet carrier, 44 → the first gear ring, 33 → the first planetary gear 32 → the first
34 → output shaft 12.Wherein, reaction force is transferred to casing 21 by the first brake 71 and the 3rd brake 73.
Fig. 3 is drive path schematic diagram of the automatic transmission when two keep off shown in Fig. 1, as shown in figure 3, when this practicality is new
When the automatic transmission that type is provided is in two gears, the first brake 71 and the 4th brake 74 are in closure state, due to first
Brake 71 is in closure state, and the first sun gear 31 and the second sun gear 41 are stationary parts, due to the 4th brake 74
In closure state, the 4th sun gear 61 is stationary parts, and the power transmission route of the gear two as shown in figure 3, wherein, keep off
The gearratio for the automatic transmission that the present embodiment is provided is during gear：
I2=(1+k1+k3+k1*k3+k4+k4*k1+k4*k3+k4*k1*k3)/(k4*k1*k3).
The power transmission route of the gear is：Gear ring 63 → fourth line star-wheel 62 → fourth line the carrier of input shaft 11 → the 4th
64 → the second gear ring, 43 → the second planetary gear, 42 → the second planet carrier, 44 → the first gear ring 33 → the first, 32 → the first row of planetary gear
34 → output shaft of carrier 12.Wherein reaction force is transferred to casing 21 by the first brake 71 and the 4th brake 74.
Fig. 4 be Fig. 1 shown in automatic transmission three keep off when drive path schematic diagram, when the utility model provide from
When dynamic speed changer is in three gears, the first brake 71 and second clutch 82 are in closure state, at the first brake 71
In closure state, the first sun gear 31 and the second sun gear 41 are stationary parts, because second clutch 82 is in closure state
Third planet gear train 50 and fourth planet gear train 60 are rotated as an entirety.The power transmission route of the gear is such as
In Fig. 4 shown in thicker black lines, the gearratio of the gear is：
I3=(1+k3+k4+k4*k3)/(k4*k3).
Its power transmission route is：11 → third planet of input shaft gear train 50 and the tooth of fourth planet gear train 60 → the second
Enclose the planet carrier 34 of 43 → the second planetary gear, 42 → the second planet carrier, 44 → the first gear ring 33 → the first planetary gear 32 → the first → defeated
Shaft 12.Wherein reaction force is transferred to casing 21 by the first brake 71.
Fig. 5 be Fig. 1 shown in automatic transmission four keep off when drive path schematic diagram, when the utility model provide from
When dynamic speed changer is in four gears, the first brake 71 and first clutch 81 are in closure state, at the first brake 71
In closure state, the first sun gear 31 and the second sun gear 41 are stationary parts, because first clutch 81 is in closure state,
The power that input shaft 11 is inputted directly can enter the second planet carrier 44 by first clutch 81.The power transmission road of the gear
Line is as shown in thicker black lines in Fig. 5, and the gearratio of the gear is：
I4=(1+k4)/k4.
Its power transmission line is：The gear ring 33 → the of 11 → first clutch of input shaft, 81 → the second planet carrier 44 → the first
One planetary gear 32 → the first, 34 → output shaft of planet carrier 12.Its reaction force is transferred to casing 21 by the first brake 71.
Fig. 6 be Fig. 1 shown in automatic transmission five keep off when drive path schematic diagram, when the utility model provide from
When dynamic speed changer is in five gears, first clutch 81 and second clutch 82 are in closure state, due to first clutch 81 and
Second clutch 82 is in closure state, the first planetary gearsets 30, the second planetary gearsets 40, third planet gear train 50
And fourth planet gear train 60 is rotated collectively as an entirety, i.e., the gear is direct gear, and the power of the gear is transmitted
Route is as shown in the thicker black lines of Fig. 5, and wherein the gearratio of the gear is 1.
Fig. 7 be Fig. 1 shown in automatic transmission six keep off when drive path schematic diagram, when the utility model provide from
When dynamic speed changer is in six gears, the 4th brake 74 and first clutch 81 are in closure state, at the 4th brake 74
In closure state, the 4th sun gear 61 is stationary parts, because first clutch 81 is in closure state, what input shaft 11 was inputted
Power can enter the second planet carrier 44 via first clutch 81.Therefore, in the gear, the power of input shaft 11 can be through
Cross shunting for the first time incoming 4th gear ring 63 and the second planet carrier 44, and the progress first time remittance at the second planet carrier 44 respectively
Stream.Because the first sun gear 31 is connected with the second sun gear 41, the two rotates together, therefore power can be at the second planet carrier 44
Second of shunting is carried out respectively through the first gear ring 33 and the first sun gear 31, is confluxed for the second time at the first planet carrier 34,
And spread out of by output shaft 12.The power transmission route of the gear is as shown in thicker black lines in Fig. 7, and its gearratio is：
I6=(1+k1+k4+k4*k1)/(1+k1+k3+k4+k4*k1).
Its transfer route is：
Shunt and conflux for the first time：1. gear ring 63 → fourth line, 62 → fourth line of the star-wheel carrier 64 of input shaft 11 → the 4th
The planet carrier 44 of 54 → the second gear ring of → the third line carrier, 43 → the second planetary gear 42 → the second；2. 11 → first clutch of input shaft
81 → the second planet carriers 44.
Shunt and conflux for the second time：1. the planet of 44 → the first gear ring of the second planet carrier, 33 → the first planetary gear 32 → the first
Frame 34；2. the planetary gear 32 of 44 → the second planetary gear of the second planet carrier, 42 → the second sun gear, 41 → the first sun gear 31 → the first →
First planet carrier 34.Power after confluxing for the second time is exported from output shaft 12.
Fig. 8 be Fig. 1 shown in automatic transmission seven keep off when drive path schematic diagram, when the utility model provide from
When dynamic speed changer is located at seven gears, the 3rd brake 73 and first clutch 81 are in closure state, at the 3rd brake 73
In closure state, the 3rd gear ring 53 is stationary parts, and because first clutch 81 is in closure state, it is dynamic that input shaft 11 is inputted
Power can be transferred to the second planet carrier 44 via first clutch 81.In the gear, the power that input shaft 11 is inputted can be through
By being further separated into the 3rd sun gear 51 for the first time and entering the second planet carrier 44 by first clutch 81, and in the second planet
Carry out confluxing for the first time at frame 44.Identically with six gears, because the first sun gear 31 is connected with the second sun gear 41, therefore its meeting
Carry out second at the second planet carrier 44 to shunt, and confluxed for the second time at the first planet carrier 34, finally by power from
Output shaft 12 is exported.The power transmission route of the gear is as shown in thicker black lines in Fig. 8, and its gearratio is：
I7=(1+k2+k4+k4*k2)/(1+k2+k3*k2+k4+k4*k2).
The power transmission route of the gear is as follows：Divide for the first time and conflux：1. the sun gear of input shaft 11 → the 3rd 51 →
The planet carrier 44 of 43 → the second planetary gear of the third line 52 → the third line of star-wheel, 54 → the second gear ring of carrier 42 → the second；2. input shaft 11
The planet carrier 44 of → first clutch 81 → the second.
Shunt and conflux for the second time：1. the planet of 44 → the first gear ring of the second planet carrier, 33 → the first planetary gear 32 → the first
Frame 34；2. the planetary gear 32 of 44 → the second planetary gear of the second planet carrier, 42 → the second sun gear, 41 → the first sun gear 31 → the first →
First planet carrier 34.Power after confluxing for the second time is exported from output shaft 12.
Fig. 9 is drive path schematic diagram of the automatic transmission when one keeps off shown in Fig. 1, is provided when the utility model
When automatic transmission is in gear, the brake 73 of second brake 72 and the 3rd is in closure state, due to second brake
72 are in closure state, therefore the first gear ring 33 and the second planet carrier 44 are stationary parts, because the 3rd brake 73 is in
Closure state, therefore the 3rd gear ring 53 is stationary parts, the power that input shaft 11 is transmitted can be directly entered the 3rd sun gear 51,
And spread out of after third planet gear train 50, the second planetary gearsets 40 and the first planetary gearsets 30 by output shaft 12.Should
The power transmission route of gear is as shown in thicker black lines in Fig. 9, and the gearratio of the automatic transmission of the gear is：
IR1=- (1+k2+k4+k4*k2)/k3
The power transmission route of the gear is as follows：
Input shaft 11 → the gear ring 43 → the second of the 3rd sun gear 51 → the third line, 52 → the third line of star-wheel carrier 54 → the second
31 → the first planetary gear of planetary gear 42 → the second sun gear, 41 → the first sun gear 32 → the first, 34 → output shaft of planet carrier 12.
Figure 10 is drive path schematic diagram of the automatic transmission when two keep off shown in Fig. 1, when the utility model is provided
Automatic transmission be in two gear when, the brake 74 of second brake 72 and the 4th be in closure state, due to second braking
Device 72 is in closure state, therefore the first gear ring 33 and the second planet carrier 44 are stationary parts, because the 4th brake 74 is in
Closure state, therefore the 4th sun gear 61 is stationary parts.The power that input shaft 11 is inputted is directly entered the 4th gear ring 63, and passes through
Output shaft 12 is transferred to by fourth planet gear train 60, the second planetary gearsets 40 and the first planetary gearsets 30.The gear
Power transmission route is as shown in black lines thicker in Figure 10, and the gearratio of automatic transmission is under the gear：
IR2=- (1+k1+k4+k4*k1)/(k3*k1).
Its power transmission route is：Gear ring 63 → fourth line, 62 → fourth line of the star-wheel carrier 64 → the of input shaft 11 → the four
The planetary gear of three planet carriers, 54 → the second gear ring, 43 → the second planetary gear, 42 → the second sun gear, 41 → the first sun gear 31 → the first
32 → the first 33 → output shafts of gear ring 12.
Figure 11 is drive path schematic diagram of the automatic transmission when three keep off shown in Fig. 1, when the utility model is provided
Automatic transmission when being in three gear, second brake 72 and second clutch 82 are in closure state.Due to the second braking
Device 72 is in closure state, and the first gear ring 33 and the second planet carrier 44 are stationary parts, because second clutch 82 is in closure
State, third planet gear train 50 and fourth planet gear train 60 are rotated as an entirety.The power transmission of the gear
Route is as shown in thicker black lines in Figure 11, and its gearratio is：
IR3=- (1+k4)/k3.
Its power transmission route is：11 → third planet of input shaft gear train 50 and the tooth of fourth planet gear train 60 → the second
Enclose the planet carrier 34 of 43 → the second planetary gear, 42 → the second sun gear, 41 → the first sun gear 31 → the first planetary gear 32 → the first →
Output shaft 12.
The utility model makes this reality by the Reasonable Arrangement of four planetary gearsets, four brakes and two clutches
There are seven forward gears with the automatic transmission of new offer and three reverse gear, ensureing its transmission efficiency and planet wheel speed
Under the premise of, because the automatic transmission only has three degree of freedom, therefore pass through the control of two elements, you can complete gear
Control, actuation member is less, reduces control difficulty.
It is to be appreciated that in the power transmission route of each gear of the present utility model, the main work of second clutch 82
With being third planet gear train 50 and fourth planet gear train 60 is combined as a whole and is rotated, thus second from
The position of clutch 82 is not limited to the situation shown in first embodiment, and it can be located at the 3rd sun of third planet gear train 50
Wheel 51, the gear ring 53 of the third line carrier 54 and the 3rd it is any between the two, or fourth planet gear train 60 the 4th sun gear 61,
The gear ring 63 of fourth line carrier 64 and the 4th it is any between the two.Because the 3rd sun gear 51 is connected with the 4th gear ring 63, the 3rd
Planet carrier 54 is connected with fourth line carrier 64, thus second clutch 82 position in addition to the position in embodiment one, also have
Other four kinds of situations.
The structural representation for the automatic transmission that Figure 12 provides for the utility model second embodiment, as shown in figure 12, this
The structure and control logic of automatic transmission and embodiment one that embodiment is provided are essentially identical, and its difference is, at this
In embodiment, second clutch 82 is arranged between the sun gear 61 of fourth line carrier 64 and the 4th.In the present embodiment, second from
Clutch 82 is located at fourth planet gear train 60 away from the side where third planet gear train 50, i.e., after automatic transmission
Portion, so that the structure of automatic transmission is compacter.
The structural representation for the automatic transmission that Figure 13 provides for the utility model 3rd embodiment, Figure 14 is that this practicality is new
Type fourth embodiment provide automatic transmission structural representation, Figure 15 for the embodiment of the utility model the 5th provide it is automatic
The structural representation of speed changer, as shown in FIG. 13 to 15, in 3rd embodiment, fourth embodiment and the 5th embodiment, the
Two clutches 82 are located between the 3rd gear ring 53 and the third line carrier 54 respectively, between the 4th gear ring 63 and fourth line carrier 64,
Between 4th gear ring 63 and the 4th sun gear 61.In above three embodiment, second clutch 82 is arranged at third planet tooth
Between wheel group 50 and fourth planet gear train 60, so that the structure of automatic transmission is compacter.
In summary, the reasonable cloth that the utility model passes through four planetary gearsets, four brakes and two clutches
If making the automatic transmission that the utility model is provided be reversed gear with seven forward gears and three, ensureing its transmission efficiency and row
On the premise of star-wheel rotating speed, because the automatic transmission only has three degree of freedom, therefore pass through the control of two elements, you can
The control of gear is completed, actuation member is less, reduces control difficulty.
The utility model additionally provides a kind of vehicle, and the vehicle includes above-mentioned automatic transmission, on its of the vehicle
He may refer to prior art at structure, will not be repeated here.
It is described above, only it is preferred embodiment of the present utility model, not makees any formal to the utility model
Limitation, although the utility model is disclosed above with preferred embodiment, but is not limited to the utility model, any ripe
Professional and technical personnel is known, is not being departed from the range of technical solutions of the utility model, when in the technology using the disclosure above
Hold the equivalent embodiment made a little change or be modified to equivalent variations, as long as being without departing from technical solutions of the utility model
Hold, any simple modification, equivalent variations and the modification made according to technical spirit of the present utility model to above example, still
Belong in the range of technical solutions of the utility model.
Claims (10)
1. a kind of automatic transmission, it is characterised in that：Including input shaft, casing, the first planetary gearsets, the second planetary gear
Group, third planet gear train, fourth planet gear train, the first brake, second brake, the 3rd brake, the 4th brake,
First clutch, second clutch and output shaft；
First planetary gearsets include the first sun gear, the first planetary gear, the first gear ring and the first planet carrier, described first
Planetary gear is rotatably supported on first planet carrier, and first planetary gear is located at first sun gear and first
Between gear ring, and engaged with first sun gear and first gear ring；
Second planetary gearsets include the second sun gear, the second planetary gear, the second gear ring and the second planet carrier, described second
Planetary gear is rotatably supported on second planet carrier, and second planetary gear is located at second sun gear and second
Between gear ring, and engaged with second sun gear and second gear ring；
The third planet gear train includes the 3rd sun gear, the third line star-wheel, the 3rd gear ring and the third line carrier, the described 3rd
Planetary gear is rotatably supported in the third line carrier, and the third line star-wheel is located at the 3rd sun gear and the 3rd
Between gear ring, and engaged with the 3rd sun gear and the 3rd gear ring；
The fourth planet gear train includes the 4th sun gear, fourth line star-wheel, the 4th gear ring and fourth line carrier, the described 4th
Planetary gear is rotatably supported in the fourth line carrier, and the fourth line star-wheel is located at the 4th sun gear and the 4th
Between gear ring, and engaged with the 4th sun gear and the 4th gear ring；
First gear ring is connected with second planet carrier, and first sun gear is connected with second sun gear, described
Second gear ring is connected with the third line carrier, and the third line carrier is connected with the fourth line carrier, the 3rd sun
Wheel is connected with the 4th gear ring, and the input shaft is connected with the 3rd sun gear and the 4th gear ring, the output shaft and institute
The first planet carrier is stated to be connected；
First sun gear and second sun gear are connected by first brake with the casing, first tooth
Circle and second planet carrier are connected by the second brake with the casing, and the 3rd gear ring passes through the described 3rd system
Dynamic device is connected with the casing, and the 4th sun gear is connected by the 4th brake with the casing；
The input shaft is connected by the first clutch with second planet carrier, and the second clutch selectively makes
The third planet gear train and the fourth planet gear train are integral and rotated.
2. automatic transmission according to claim 1, it is characterised in that：First planetary gearsets, second row
Star gear train, the third planet gear train and the fourth planet gear train are laid successively, the input of the input shaft and
The output end of the output shaft is respectively positioned on one of first planetary gearsets away from direction where second planetary gearsets
Side.
3. automatic transmission according to claim 2, it is characterised in that：First brake is located at first planet
Gear train away from the side where second planetary gearsets, the second brake be located at first planetary gearsets with
Between second planetary gearsets, the 3rd brake is located at along perpendicular to the input with the third planet gear train
On axial same section, the 4th brake is located at the fourth planet gear train away from the third planet gear
Side where group, the first clutch is located between second planetary gearsets and the third planet gear train.
4. automatic transmission according to claim 2, it is characterised in that：The input shaft by the second clutch with
Second gear ring and the third line carrier are connected.
5. automatic transmission according to claim 4, it is characterised in that：The second clutch is arranged at second row
Between star gear train and the third planet gear train.
6. automatic transmission according to claim 2, it is characterised in that：The second clutch is arranged at the described 4th too
Between sun wheel and the fourth line carrier, the second clutch is located at the fourth planet gear train away from the third planet
Side where gear train.
7. automatic transmission according to claim 2, it is characterised in that：The second clutch is located at the 3rd gear ring
Between the third line carrier, or between the 4th gear ring and the fourth line carrier, or the 4th gear ring with it is described
Between 4th sun gear.
8. automatic transmission according to claim 7, it is characterised in that：The second clutch is located at the third planet
Between gear train and the fourth planet gear train.
9. automatic transmission according to claim 1, it is characterised in that：It is described when the automatic transmission is located at a gear
First brake and the 3rd brake are in closure state；When the automatic transmission is located at two gears, first braking
Device and the 4th brake are in closure state；When the automatic transmission is located at three gears, first brake and described
Second clutch is in closure state；When the automatic transmission is located at four gears, first brake and first clutch
Device is in closure state；When the automatic transmission is located at five gears, the first clutch and the second clutch are in
Closure state；When the automatic transmission is located at six gears, the 4th brake and the first clutch are in closure state；
When the automatic transmission is located at seven gears, the 3rd brake and the first clutch are in closure state；It is described automatic
When speed changer is located at gear, the second brake and the 3rd brake are in closure state；The automatic transmission
During positioned at two gears, the second brake and the 4th brake are in closure state；The automatic transmission is located to fall
During three gears, the second brake and the second clutch are in closure state.
10. a kind of vehicle, it is characterised in that：Including automatic transmission as in one of claimed in any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720107653.9U CN206571916U (en) | 2017-01-27 | 2017-01-27 | Automatic transmission and the vehicle with the automatic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720107653.9U CN206571916U (en) | 2017-01-27 | 2017-01-27 | Automatic transmission and the vehicle with the automatic transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206571916U true CN206571916U (en) | 2017-10-20 |
Family
ID=60061700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720107653.9U Withdrawn - After Issue CN206571916U (en) | 2017-01-27 | 2017-01-27 | Automatic transmission and the vehicle with the automatic transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206571916U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763566A (en) * | 2017-01-27 | 2017-05-31 | 广州汽车集团股份有限公司 | Automatic transmission and the vehicle with the automatic transmission |
-
2017
- 2017-01-27 CN CN201720107653.9U patent/CN206571916U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763566A (en) * | 2017-01-27 | 2017-05-31 | 广州汽车集团股份有限公司 | Automatic transmission and the vehicle with the automatic transmission |
| CN106763566B (en) * | 2017-01-27 | 2018-07-27 | 广州汽车集团股份有限公司 | automatic transmission and vehicle with the automatic transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171020 Effective date of abandoning: 20180727 |
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| AV01 | Patent right actively abandoned |