JP3112087U - Fluid planetary gear transmission - Google Patents

Abstract

Provided is a fluid planetary gear transmission which does not stop engine rotation and has a double safety structure in which a planetary gear transmission and a direct coupling clutch are used in parallel with a fluid three-element torque converter.
An input pump of a fluid three-element torque converter and a central sun gear of a planetary gear transmission, an output turbine and a planetary gear are connected to each other, and a one-way clutch for low-speed traveling is connected to the outer periphery of the planetary annular gear, and the engine is connected to the outside thereof. An externally fixed band brake linked to the accelerator pedal is installed, the fluid three-element torque converter is connected to the planetary gear via the intermediate traveling planetary gear transmission, and an externally fixed one-way clutch is connected to the outer periphery of the planetary annular gear A fluid planetary gear transmission in which a one-way clutch is disposed on the input shaft side, and a centrifugal direct clutch is mounted between the output shaft and the outer periphery of the planetary annular gear and the one-way clutch for high-speed direct travel.
[Selection] Figure 1

Description

  The present invention relates to a fluid torque converter and a gear transmission.

A fluid gear multi-stage transmission that has a structure in which several stages of gear transmissions are connected in series to a fluid three-element torque converter and automatically controlled from low speed to high speed by hydraulic pressure.
JP-A-53-4153 JP 50-135470 A JP 58-193967 A Special table 2000-513792 gazette

  The fluid three-element torque converter has a lot of power loss and poor fuel economy. Since the starting torque is particularly weak, the gear transmission group connected in series and the hydraulic automatic control circuit for correction are complicated and fluid slippage is also large. Other than fluid, there is no durability and the reliability is poor. While increasing the fluid torque efficiency, it is necessary to prevent the engine on the input shaft side from stopping when the engine accelerator pedal is released, and to reduce the start of movement due to the fluid coupling at the time of running stop specific to the fluid torque converter.

  Fig. 1 Three-element fluid torque converter, pump and planetary center sun gear, turbine and planetary gear are connected in parallel, one-way clutch is attached to the outer periphery of the planetary annular gear, and the outer fixed band is externally rotated. Place the brake. A centrifugal direct clutch is mounted between the annular gear and the output shaft for high-speed direct drive. The fluid torque converter stator is rotated at a reduced speed via a medium speed planetary gear transmission on the input shaft side, and an external fixed one-way clutch is placed on the outer side. The rotation direction of the planetary center sun gear and the movement direction of the planetary gear central axis are the same, and the output shaft rotates at a reduced speed. The movement of the medium speed planetary gear transmission for the torque converter stator is the same as described above.

The fluid three-element torque converter has a weak starting torque, and the planetary gear torque and the fluid three-element torque converter torque are added in parallel by a low-speed planetary gear transmission. In medium speed running, the pump torque is weak, so the fluid three-element torque converter is decelerated to medium speed with a medium speed planetary gear transmission to make it a strong torque to supplement the pump and withstand the load. A centrifugal direct coupling clutch is installed between the output shaft and the planetary ring gear for high-speed running. The one-way clutch for low and medium speeds is automatically disengaged when the input / output shaft speed ratio becomes smaller than the planetary gear reduction ratio. When the accelerator pedal is released, the associated band brake is released, preventing the engine on the idle input shaft side from stopping. Even if the band brake parts are broken, the machine can continue to run as a fluid three-element torque converter because it is connected in fluid parallel. In addition, when the vehicle is stopped, the movement due to the fluid coupling peculiar to the fluid transmission is weak because the fluid and the medium speed rotating gear are coupled when the accelerator pedal is not depressed. The conventional type is strong because of fluid and low-speed rotating gear coupling. A fluid planetary gear transmission that does not stop engine rotation with a double safety structure in which a planetary gear transmission and a direct coupling clutch are used in parallel with a fluid three-element torque converter. To summarize the effect:
(Item 1) The outer periphery of the planetary annular gear is rotated integrally with the one-way clutch, and an external fixed band brake interlocked with the engine accelerator pedal is attached to the outside, and the one-way clutch of the torque converter stator is arranged on the input shaft side. The engine rotation stoppage prevention when the accelerator pedal is released has been eliminated from the parallel double safety without using the input / output shaft clutch and the interlocking operation of releasing the band brake. (Item 2) Parallel connection of gear and direct clutch and fluid, so it can run even if the gear and direct clutch are broken.
(Item 3) Since many gears and direct connections are used, there is little fluid slip, the engine brake is strong, and fuel consumption acceleration is excellent.
(Item 4) Since the fluid movement is weak, it is safe.
(Item 5) No complicated control is required, so reliability is high.
(Item 6) The brake diameter is large and robust.
(Item 7) It has the major features of double safety and simple structure.
(Item 8) A medium-speed planetary gear transmission was made using a fluid torque converter.

  The band brake is interlocked when the engine accelerator pedal is depressed. That is, when the accelerator pedal is depressed, the outer periphery of the low-speed planetary annular gear is externally fixed together with the one-way clutch, starts decelerating rotation, adds the fluid three-element torque, and travels at a low speed. In medium-speed running, the torque converter stators driving through a medium-speed planetary gear transmission to withstand the load. In high-speed traveling, the centrifugal direct coupling clutch is operated to travel directly. The one-way clutch for low and medium speeds is automatically disengaged when the input / output shaft speed ratio becomes smaller than the planetary gear reduction ratio. In addition, fluid torque converters can run in a highly efficient region where high-rotation oil is heavier than mercury due to centrifugal force, but it serves as a double safety for planetary gear transmissions and assists smooth running. When the accelerator pedal is not stepped on at low speed, the interlocked band brake is released and fluid three-element torque converter travels, preventing the engine rotation stop on the input shaft side.

The principle of operation is shown.

Explanation of symbols

1 Input shaft
2 Output shaft
3 Fluid torque converter pump
4 Fluid torque converter turbine
5 One-way clutch on the outer periphery of the annular gear for medium speed running
6 One-way clutch on the outer periphery of the annular gear for low-speed travel
7 Planetary gears for low speed travel
8 Band brake
9 Planetary outer ring gear for low speed running
10 Planetary center sun gear for low-speed driving
11 Centrifugal direct clutch
12 Medium speed planetary center sun gear
13 Planetary gears for medium speed running
14 Planetary outer ring gear for medium speed running

  The present invention relates to a fluid torque converter and a gear transmission.

A fluid gear multi-stage transmission that has a structure in which several stages of gear transmissions are connected in series to a fluid three-element torque converter and automatically controlled from low speed to high speed by hydraulic pressure.
JP-A-53-4153 JP 50-135470 A JP 58-193967 A Special table 2000-513792 gazette

  The fluid three-element torque converter has a lot of power loss and poor fuel economy. Since the starting torque is particularly weak, the gear transmission group connected in series and the hydraulic automatic control circuit for correction are complicated and fluid slippage is also large. Belts, sliding tops, electromagnetic control use, etc. are not durable except for fluids and have low reliability. It is also necessary to reduce the start of movement due to fluid coupling when stopping traveling, which is typical for fluid torque converters.

  Fig. 1 Three-element fluid torque converter, pump and planetary center sun gear, turbine and planetary gear are connected in parallel, one-way clutch is attached to the outer periphery of the planetary annular gear, and the outer working band is externally rotated. Place the brake. A centrifugal direct clutch is mounted between the annular gear and the output shaft for high-speed direct drive. The fluid torque converter stator is decelerated and rotated on the input shaft side via a medium-speed planetary gear transmission, and an externally fixed one-way clutch is placed outside. The rotation direction of the planetary center sun gear and the movement direction of the planetary gear central axis are the same, and the output shaft rotates at a reduced speed. The movement of the medium speed planetary gear transmission for the torque converter is the same as described above.

The fluid three-element torque converter compensates for the weak starting torque by running the planetary gear transmission torque and the fluid three-element torque converter torque in parallel. In medium speed running, the input pump torque is weak, so the fluid three-element torque converter stator is decelerated and rotated by the medium speed planetary gear transmission, and the pump torque is reinforced by the stator. A centrifugal direct coupling clutch is installed between the output shaft and the planetary ring gear for high-speed running. The one-way clutch for low and medium speeds is automatically disengaged when the input / output shaft speed ratio becomes smaller than the planetary gear reduction ratio. Further, when the vehicle is stopped, the movement due to the fluid coupling peculiar to the fluid transmission is weak because the fluid and the medium speed rotating gear are coupled when the engine accelerator pedal is not depressed. The conventional type is strong because of fluid and low-speed rotating gear coupling. A planetary gear transmission in which the planetary gear transmission and the direct clutch are used in parallel with the fluid three-element torque converter. To summarize the effect:
(Item 1) Gears, direct clutch, band brake and fluid are connected in parallel. So, even if the gear, direct clutch, and band brake are broken, it can run.
(Item 2) Since many gears and direct coupling are used, there is little fluid slip and fuel consumption acceleration is excellent.
(Item 3) Since the fluid movement is weak, it is safe.
(Item 4) Simple structure with no complicated control, so reliability is high.
(Item 5) A fluid torque converter was used as a medium speed planetary gear transmission.

  The band brake is activated when the engine accelerator pedal is depressed. That is, when the pedal is depressed, the outer periphery of the planetary ring gear is externally fixed in cooperation with the one-way clutch, starts decelerating rotation, adds the fluid three-element torque, and travels at a low speed. When the pedal is released, the brake is also released, preventing input shaft rotation from stopping. In medium-speed running, the fluid torque converter leads the running through a medium-speed planetary gear transmission to withstand the load. In high-speed traveling, the centrifugal direct coupling clutch is operated to travel directly. The one-way clutch for low and medium speeds is automatically disengaged when the input / output shaft speed ratio becomes smaller than the planetary gear reduction ratio. In addition, fluid torque converters can run in a highly efficient region where high-rotation oil is heavier than mercury due to centrifugal force, but this is useful for double safety and smooth running of planetary gear transmissions.

The principle of operation is shown.

Explanation of symbols

1 Input shaft
2 Output shaft
3 Input pump
4 Output turbine
5 One-way clutch on the outer periphery of the annular gear for medium speed running
6 One-way clutch for low speed travel around the outer periphery of the annular gear
7 Planetary gear
8 Band brake
9 Planetary outer ring gear
10 planetary center sun gear
11 Centrifugal direct clutch
12 Medium speed planetary center sun gear
13 Planetary gears for medium speed running
14 Planetary outer ring gear for medium speed running
15 Fluid torque converter

  The present invention relates to a fluid torque converter and a gear transmission.

A fluid gear multi-stage transmission with a structure in which several gear transmission groups are connected in series to a fluid three-element torque converter and automatically controlled from low speed to high speed by hydraulic pressure.
JP-A-53-4153 JP 50-135470 A JP 58-193967 A Special table 2000-513792 gazette

  Since the conventional fluid multi-stage gear transmission has a fluid three-element torque converter and a reduction gear group connected in series, it has a drawback of stopping the vehicle when a failure occurs, and has a complicated structure with many fluid slips. The use of belts, sliding pieces, electromagnetic control, etc. is less durable and less reliable than fluids.

  As shown in FIG. 1, an input pump of a fluid three-element torque converter and a central sun gear of a planetary gear transmission, an output turbine and a planetary gear are connected to each other, and a one-way clutch for low-speed traveling is connected to the outer periphery of the planetary annular gear. An externally fixed band brake linked to the engine accelerator pedal is arranged on the outside. The fluid three-element torque converter is connected to the planetary gear via a medium-speed traveling planetary gear transmission. An externally fixed one-way clutch is connected to the outer periphery of the planetary annular gear, and the one-way clutch is disposed on the input shaft side. ing. A centrifugal direct coupling clutch is mounted between the output shaft and the outer periphery of the planetary annular gear for high-speed direct traveling. The rotation direction of the planetary center sun gear is the same as the direction of movement of the planetary gear central axis, and the rotation is reduced. The movement of the medium-speed traveling planetary gear transmission is the same as described above. That is, the present invention solves the above-mentioned problems by utilizing a stator by using fluid and gears in parallel.

  As described above, according to the first aspect of the invention, low-speed traveling is parallel addition traveling of planetary gear torque and fluid three-element torque, and medium-speed traveling is parallel addition traveling of medium-speed traveling planetary gear torque and fluid three-element torque. In high-speed running, direct running without fluid slip is possible. As a result, double safe driving is possible and fuel consumption acceleration is improved. The two sets of one-way clutches can be automatically disengaged and automatically shifted when the input / output shaft speed ratio becomes smaller than the planetary gear reduction ratio. Moreover, since the input pump torque is weak in the medium speed traveling, the fluid three-element torque converter leads the traveling through the medium speed traveling planetary gear transmission, and the pump torque can be reinforced to improve the medium speed load traveling performance.

  The band brake shown in FIG. 1 is interlocked with the engine accelerator pedal. That is, when the pedal is depressed, the outer periphery of the planetary ring gear is externally fixed together with the one-way clutch for low-speed running, and the vehicle starts to decelerate and rotate, and the fluid three-element torque is also added to allow low-speed running. If the pedal is released, the brake is also released and the input shaft rotation can be prevented from stopping. In medium speed traveling, a fluid three-element torque converter leads the traveling through a medium speed traveling planetary gear transmission and can withstand the load. High-speed traveling can be directly connected by centrifugal force.

  The present invention can also be applied to various internal combustion engine transmissions.

The principle of operation is shown.

Explanation of symbols

1 Input shaft
2 Output shaft
3 Input pump
4 Output turbine
5 One-way clutch on the outer periphery of the annular gear for medium speed running
6 One-way clutch for low speed travel around the outer periphery of the annular gear
7 Planetary gear
8 Band brake
9 Planetary outer ring gear
10 planetary center sun gear
11 Centrifugal direct clutch
12 Medium speed planetary center sun gear
13 Planetary gears for medium speed running
14 Planetary outer ring gear for medium speed running
15 Fluid three-element torque converter

  The present invention relates to a fluid torque converter and a gear transmission.

A fluid gear multi-stage transmission that has a structure in which several stages of gear transmissions are connected in series to a fluid three-element torque converter and automatically controlled from low speed to high speed by hydraulic pressure.
JP-A-53-4153 JP 50-135470 A JP 58-193967 A Special table 2000-513792 gazette

  Since the conventional fluid multi-stage gear transmission has a fluid three-element torque converter and a reduction gear group connected in series, it has a drawback of stopping the vehicle when a failure occurs, and has a complicated structure with many fluid slips. The use of belts, sliding pieces, electromagnetic control, etc. is less durable and less reliable than fluids.

  As shown in FIG. 1, the input pump of the fluid three-element torque converter and the central sun gear of the planetary gear transmission, the output turbine and the planetary gear are connected to each other, and the one-way clutch for low-speed traveling is connected to the outer periphery of the planetary annular gear. An externally fixed band brake linked to the engine accelerator pedal is provided. The fluid three-element torque converter is connected to the planetary gear through a medium-speed traveling planetary gear transmission, an externally fixed one-way clutch is connected to the outer periphery of the planetary annular gear, and the one-way clutch is disposed on the input shaft side. Yes. A centrifugal direct clutch is mounted between the output shaft and the outer periphery of the planetary annular gear and the one-way clutch for high-speed direct travel. The rotation direction of the planetary center sun gear and the movement direction of the planetary gear central axis are the same, and the rotation is reduced. The movement of the medium-speed traveling planetary gear transmission is the same as described above. That is, the present invention solves the above-mentioned problems by utilizing a stator by using a fluid and a gear in parallel.

  As described above, according to the first aspect of the invention, low-speed traveling is parallel addition traveling of planetary gear torque and fluid three-element torque, and medium-speed traveling is parallel addition traveling of medium-speed traveling planetary gear torque and fluid three-element torque. In high-speed running, direct running without fluid slip is possible. As a result, double safe driving can be performed, fluid slippage is reduced, and fuel consumption acceleration is improved. Moreover, since the input pump torque is weak in the medium speed traveling, the fluid three-element torque converter leads the traveling through the medium speed traveling planetary gear transmission, and the pump torque can be reinforced to improve the medium speed load traveling performance. The two sets of one-way clutches can be automatically disengaged and automatically shifted when the input / output shaft speed ratio becomes smaller than the planetary gear reduction ratio.

  The band brake shown in FIG. 1 is interlocked with the engine accelerator pedal. That is, when the pedal is depressed, the outer periphery of the planetary ring gear is externally fixed together with the one-way clutch for low-speed running, and the vehicle starts to decelerate and rotate, and the fluid three-element torque is also added to allow low-speed running. If the pedal is released, the brake is also released and the input shaft rotation can be prevented from stopping. In medium speed traveling, a fluid three-element torque converter leads the traveling through a medium speed traveling planetary gear transmission and can withstand the load. High-speed traveling can be directly connected by centrifugal force.

  The present invention can also be applied to various internal combustion engine transmissions.

The principle of operation is shown.

Explanation of symbols

1 Input shaft
2 Output shaft
3 Input pump
4 Output turbine
5 One-way clutch on the outer periphery of the annular gear for medium speed running
6 One-way clutch for low speed travel around the outer periphery of the annular gear
7 Planetary gear
8 Band brake
9 Planetary outer ring gear
10 planetary center sun gear
11 Centrifugal direct clutch
12 Medium speed planetary center sun gear
13 Planetary gears for medium speed running
14 Planetary outer ring gear for medium speed running
15 Fluid three-element torque converter

Claims (2)

A fluid three-element torque converter and a planetary gear transmission are arranged in parallel. The torque converter pump and the planetary center sun gear, the torque converter turbine and the planetary gear are connected to each other, a one-way clutch is attached to the outer periphery of the planetary annular gear, and the outer ring is externally fixed, and an externally fixed band brake is placed to interlock with the engine accelerator pedal. A centrifugal direct coupling clutch is installed between the annular gear and the output shaft for high-speed running. The torque converter stator is placed on the input shaft side through another medium speed planetary gear transmission, rotated at medium speed, and the outer one-way clutch is externally fixed. That is
(1) When the accelerator pedal is released, stopping the engine rotation on the input shaft side is prevented by releasing the associated band brake.
(2) Low speed travel is a parallel addition of low speed planetary gear torque and fluid three-element torque converter torque.
(3) Medium speed travel is a parallel addition of medium speed planetary gear torque and fluid three-element torque converter torque.
(4) For high-speed traveling, the centrifugal direct coupling clutch is actuated to travel directly. The one-way clutch for low and medium speeds is automatically disengaged when the input / output shaft speed ratio becomes smaller than the planetary gear reduction ratio.
A fluid planetary gear transmission that does not stop engine rotation with a double safety structure that uses a planetary gear transmission and a direct coupling clutch arranged in separate drawings as described above in parallel with a fluid three-element torque converter and that reduces fluid slip loss. The fluid three-element torque converter stator is decelerated and rotated to a medium speed with a planetary gear transmission to increase the torque, and the input pump's torque shortage is assisted by the stator to improve the medium speed running performance and withstand the load. A structure that can be used as a medium-speed gear transmission by utilizing a stator with a different drawing arrangement.

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