KR20130039350A - Multi stage automatic transmission - Google Patents
Multi stage automatic transmission Download PDFInfo
- Publication number
- KR20130039350A KR20130039350A KR1020110101792A KR20110101792A KR20130039350A KR 20130039350 A KR20130039350 A KR 20130039350A KR 1020110101792 A KR1020110101792 A KR 1020110101792A KR 20110101792 A KR20110101792 A KR 20110101792A KR 20130039350 A KR20130039350 A KR 20130039350A
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- KR
- South Korea
- Prior art keywords
- transmission
- gears
- shaft
- gear
- output
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
- F16H3/091—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears including a single countershaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/0021—Generation or control of line pressure
- F16H61/0025—Supply of control fluid; Pumps therefore
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0039—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising three forward speeds
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
Description
The present invention relates to a multi-stage automatic transmission, and more particularly, to a multi-stage automatic transmission having two multi-stage transmission units that are independent of each other on one transmission shaft, and to realize various shift ranges by a combination of two multi-stage transmission units. It is about.
BACKGROUND OF THE INVENTION [0002] The multi-speed gearbox mechanism of an automatic transmission, which is applied to vehicles and industrial machines, usually consists of a combination of a plurality of planetary gear sets.
When a plurality of planetary gear sets are combined, a gear train performs a function of shifting a multi-stage transmission to a output side when rotational power is input from a torque converter that converts and transmits engine torque.
The power train of such an automatic transmission is known to be advantageous in terms of power performance and fuel consumption rate as the more gear stages are retained. Therefore, the research on the gear train that can realize more shift stages continues.
However, even if the same shift stage is implemented, the durability, power transmission efficiency, size, and weight vary greatly depending on the combination method of the planetary gear set. Therefore, the development of a gear train that is more robust and compact while minimizing power loss can be achieved. Efforts are ongoing.
Currently, the development direction of the gear train using the planetary gear set is how to combine the existing single pinion planetary gear set and the double pinion planetary gear set, and how to put the clutches, brakes, and one-way clutch in any position The focus is on whether the dog can be deployed to achieve the desired speed and hence the transmission ratio without any possible power loss.
On the other hand, in the case of the manual transmission, too many shift stages may cause inconvenience that the driver must shift frequently.
However, in the case of an automatic transmission, the computer transmission control unit (CJU) automatically controls the operation of the gear train in accordance with the driving state to perform the shift. Therefore, developing a gear train that can realize more shift stages is possible. It is a very important value.
For example, in the case of a conventional automatic transmission for a six-speed or eight-speed transmission, six or eight pairs of external gears, which are rotated in opposite directions to each other by an input shaft and an output shaft, And 6-speed or 8-speed shifting has been carried out by selecting a desired one of the pair of external differentials among 6 or 8 pairs of external differentials.
However, in order to increase the range of the shift, such conventional automatic transmissions are required to mount a differential gear by a desired number of shift stages along the longitudinal direction of the input shaft and the output shaft, thereby increasing the size of the automatic transmission and limiting the implementation of various shift ranges There is a problem.
An object of the present invention is to provide a multi-stage automatic transmission in which the size of the transmission becomes compact and various shift ranges can be realized.
The above object is achieved by an input device comprising: an input shaft; A plurality of input side gears fixed in a radially outer side of the input shaft and rotating together with the input shaft; An output shaft; A plurality of output-side gears fixed in a radially outer side of the output shaft and rotating together with the output shaft; A plurality of first transmission gears whose outer surfaces are tooth-engaged to rotate in opposite directions with the plurality of input side gears, and wherein a non-circular first cam space is formed therein; A plurality of second transmission gears whose outer surfaces are tooth-engaged to rotate in opposite directions with the plurality of output side gears, and wherein a non-circular second cam space is formed therein; A shift shaft disposed in the first cam space and the second cam space in a state in which the plurality of first transmission gears and the plurality of second transmission gears are separated from each other; Selectively controlling the connection of the plurality of input side gears and the plurality of first transmission gears so that the shift shaft rotates by shifting by a pair of gears selected from the plurality of input side gears and the plurality of first transmission gears. A first transmission unit; The plurality of output side gears and the plurality of second transmission gears are shifted by a pair of gears selected from the plurality of output side gears and the plurality of second transmission gears, and transmit rotational force of the transmission shaft to the output shaft. It is achieved by a multi-stage automatic transmission characterized in that it comprises a second transmission for selectively controlling the.
Here, the transmission shaft is formed with a receiving chamber, characterized in that it comprises a passage passage rod inserted into the receiving chamber and connected to the transmission shaft.
The first transmission portion may include: a plurality of first communication paths formed on the outer surface of the transmission shaft in communication with the accommodation chamber in a circumferential direction so as to correspond to the plurality of first transmission gears, respectively; A plurality of first flow passages provided inside the flow passage passage rod and communicating with the plurality of first communication passages and corresponding ones; A plurality of first pistons reciprocally coupled to the plurality of first communication paths, the plurality of first pistons being operated by hydraulic pressure provided to the first flow paths; A plurality of first connecting pins connected to the plurality of first pistons to be in close contact with the first transmission gear based on the operation of the first pistons; A first corresponding to the first connecting pin such that the rotational force of the selected input side gear is transmitted to the shift shaft by bringing the corresponding first connecting pin of the first transmission gear corresponding to any one selected from the plurality of input side gears into close contact; And a control unit for controlling the supply of hydraulic pressure to the flow path.
The second transmission portion may include: a plurality of second communication paths formed on the outer surface of the transmission shaft so as to correspond to the plurality of second transmission gears so as to communicate with the accommodation chamber along the circumferential direction; A plurality of second flow passages provided inside the flow passage passage rod and communicating with the plurality of second communication passages and corresponding ones; A plurality of second pistons reciprocally coupled to the plurality of second communication paths, the plurality of second pistons being operated by hydraulic pressure provided to the second flow paths; A plurality of second connecting pins connected to the plurality of second pistons to closely contact and release the second transmission gear based on the operation of the second pistons; A second flow path corresponding to the second connecting pin such that the rotational force of the transmission shaft is transmitted to the output shaft by bringing the corresponding second connecting pin of the second transmission gear corresponding to any one selected from the plurality of output side gears into close contact; And a control unit for controlling the supply of hydraulic pressure.
The plurality of first connecting pins may be arranged at equal intervals along the circumferential direction with respect to the accommodation chamber.
The plurality of second connecting pins may be arranged at equal intervals along the circumferential direction with respect to the accommodation chamber.
According to the present invention, by providing two multi-speed transmission units that are independent of each other on one transmission shaft provided between the input shaft and the output shaft, the size of the transmission becomes compact, and various transmission ranges can be realized by a combination of the two multi-speed transmission units.
1 is a schematic internal structural diagram of a multi-stage automatic transmission according to an embodiment of the present invention,
FIG. 2 is a view illustrating an arrangement state between an input gear, a first gear, a second gear, and an output gear of FIG. 1;
3 is an exploded perspective view of a first gear shift gear and a second gear shift gear in FIG. 1;
4 is a perspective view of the shift shaft of FIG. 1;
FIG. 5 is a layout view of an arrangement state between an input gear and a first transmission gear, in which a first transmission gear and a first connecting pin of FIG. 1 are connected to each other;
6 is an arrangement state structure diagram between an input gear and a first transmission gear in a state in which the first transmission gear and the first connecting pin of FIG. 1 are not connected;
FIG. 7 is a layout view of an arrangement state between an output side gear and a second transmission gear in a state in which a second transmission gear and a second connecting pin of FIG. 1 are connected;
FIG. 8 is a layout view of an arrangement state between an output gear and a second transmission gear, in which the second transmission gear and the second connecting pin of FIG. 1 are not connected.
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
1 to 8 illustrate a multi-stage automatic transmission according to an embodiment of the present invention.
Referring to these drawings, but mainly referring to FIG. 1, the multi-stage automatic transmission of the present embodiment includes a
First, the
Most of the configuration is assembled in a form accommodated in the
The
The
In the multi-stage automatic transmission according to the present embodiment, since the
Of course, since this is one embodiment, the
Hereinafter, for the convenience of illustration and description, reference numerals by positions of the
The
The
In the multi-stage automatic transmission of the present embodiment, since the
Of course, since this is one embodiment, the
Hereinafter, for convenience of illustration and description, the reference numerals for the positions of the
The plurality of
The plurality of second transmission gears 70 are provided in a pyramid shape similarly to the
The
One region of the
The
On the other hand, since the
In order to realize the operation thereof, the plurality of input side gears 30 are shifted by a pair of gears selected from the plurality of input side gears 30 and the plurality of first transmission gears 60 and the
The
The plurality of
The plurality of
The plurality of
The plurality of first connecting
In the present embodiment, the first connecting
These first connecting
For example, when the hydraulic pressure is supplied to the second position as shown in FIG. 1 and the
The multistage automatic transmission of the present embodiment is configured to enable such a series of structures, that is, any one selected from the plurality of first transmission gears 60 and the
In addition, since the
In order to implement the operation thereof, the plurality of second transmission gears 70 and the gears are shifted by a pair of gears selected from the plurality of second transmission gears 70 and the
The
The plurality of
The plurality of
The plurality of
The plurality of second connecting
In the present embodiment, the second connecting
These second connecting
For example, when the hydraulic pressure is supplied to the "C" position as shown in FIG. 1 and the
In order to enable such a series of structures, that is, any one selected from the plurality of second transmission gears 70 and the
Looking at the operation and the shifting operation of the multi-stage automatic transmission according to an embodiment of the present invention having such a configuration as follows.
As shown in FIG. 1 by the
At the same time, the
Therefore, the power input through the
On the other hand, in the process of transmitting power from the
That is, as an example, the gear ratio of the
On the other hand, the reverse drive of the multi-stage automatic transmission according to the present invention will be described.
When the hydraulic pressure is simultaneously supplied to the reverse position of the
At the same time, the
Accordingly, the reverse driving force input through the
Therefore, in the multi-stage automatic transmission in the present embodiment, since the first shift speed is composed of 1 reverse gear and 3 forward gear speeds, and the second gear speed is composed of 3 gears, the combination of the first gear speed and the second gear speed is made. By this, a total of nine shifts and one reverse stage can be realized.
That is, the multi-stage automatic transmission according to the present invention may be variously adjusted by adjusting the first and second gearshift speeds, thereby realizing a variety of shift ranges by combining the first and second gearshift speeds.
Thus, according to the present invention, by providing two multi-speed transmission units that are independent of each other on one transmission shaft provided between the input shaft and the output shaft, the size of the transmission is compact, the combination of the two multi-stage transmission unit to vary the range of the transmission range It can be implemented.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.
10: main body housing 20: input shaft
30: input gear 40: output shaft
50: output side gear 60: first transmission gear
70: second transmission gear 80: shift shaft
90: passage passage rod 100: first transmission portion
101: first passage 103: first passage
105: first piston 107: first connecting pin
110: second transmission portion 111: second communication path
113: second euro passage 115: second piston
117: second connection pin 120: control unit
Claims (6)
A plurality of input side gears fixed in a radially outer side of the input shaft and rotating together with the input shaft;
An output shaft;
A plurality of output-side gears fixed in a radially outer side of the output shaft and rotating together with the output shaft;
A plurality of first transmission gears whose outer surfaces are tooth-engaged to rotate in opposite directions with the plurality of input side gears, and wherein a non-circular first cam space is formed therein;
A plurality of second transmission gears whose outer surfaces are tooth-engaged to rotate in opposite directions with the plurality of output side gears, and wherein a non-circular second cam space is formed therein;
A shift shaft disposed in the first cam space and the second cam space in a state in which the plurality of first transmission gears and the plurality of second transmission gears are separated from each other;
Selectively controlling the connection of the plurality of input side gears and the plurality of first transmission gears so that the shift shaft rotates by shifting by a pair of gears selected from the plurality of input side gears and the plurality of first transmission gears. A first transmission unit;
The plurality of output side gears and the plurality of second transmission gears are shifted by a pair of gears selected from the plurality of output side gears and the plurality of second transmission gears, and transmit rotational force of the transmission shaft to the output shaft. Multi-stage automatic transmission comprising a second transmission for selectively controlling the.
The transmission shaft is formed in the accommodation chamber, the multi-stage automatic transmission characterized in that it comprises a passage passage rod inserted into the accommodation chamber and connected to the transmission shaft.
The first transmission portion,
A plurality of first communication paths formed on the outer surface of the transmission shaft so as to correspond to the plurality of first transmission gears so as to communicate with the accommodation chamber along the circumferential direction;
A plurality of first passage passages provided in the passage passage rods and communicating with the plurality of first passage passages and corresponding ones;
A plurality of first pistons reciprocally coupled to the plurality of first communication paths, the plurality of first pistons being operated by hydraulic pressure provided to the first flow paths;
A plurality of first connecting pins connected to the plurality of first pistons to close and close contact with the first transmission gear based on an operation of the first piston;
A first corresponding to the first connecting pin such that the rotational force of the selected input side gear is transmitted to the shift shaft by bringing the corresponding first connecting pin of the first transmission gear corresponding to any one selected from the plurality of input side gears into close contact; A multistage automatic transmission comprising a control unit for controlling the supply of hydraulic pressure to the flow path.
The second transmission portion,
A plurality of second communication paths formed on the outer surface of the transmission shaft so as to correspond to the plurality of second transmission gears so as to communicate with the accommodation chamber along the circumferential direction;
A plurality of second flow passages provided inside the flow passage passage rod and communicating with the plurality of second communication passages and corresponding ones;
A plurality of second pistons reciprocally coupled to the plurality of second communication paths, the plurality of second pistons being operated by hydraulic pressure provided to the second flow paths;
A plurality of second connecting pins connected to the plurality of second pistons to closely contact and release the second transmission gear based on the operation of the second pistons;
A second flow path corresponding to the second connecting pin such that the rotational force of the transmission shaft is transmitted to the output shaft by bringing the corresponding second connecting pin of the second transmission gear corresponding to any one selected from the plurality of output side gears into close contact; A multistage automatic transmission comprising a control unit for controlling the supply of hydraulic pressure.
And the plurality of first connecting pins are arranged at equal intervals along the circumferential direction with respect to the accommodation chamber.
And the plurality of second connection pins are disposed at equal intervals along the circumferential direction with respect to the accommodation chamber.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020110101792A KR20130039350A (en) | 2011-10-06 | 2011-10-06 | Multi stage automatic transmission |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020110101792A KR20130039350A (en) | 2011-10-06 | 2011-10-06 | Multi stage automatic transmission |
Publications (1)
Publication Number | Publication Date |
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KR20130039350A true KR20130039350A (en) | 2013-04-22 |
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ID=48439541
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020110101792A KR20130039350A (en) | 2011-10-06 | 2011-10-06 | Multi stage automatic transmission |
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KR (1) | KR20130039350A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022203221A1 (en) * | 2021-03-20 | 2022-09-29 | 한은수 | Multi-speed transmission |
-
2011
- 2011-10-06 KR KR1020110101792A patent/KR20130039350A/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022203221A1 (en) * | 2021-03-20 | 2022-09-29 | 한은수 | Multi-speed transmission |
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