JPH02118239A - Gear speed change gear - Google Patents

Abstract

PURPOSE:To obtain the speed change stages of above five advancing stages by placing simple type first and second planetary gear sets and a double pinion type third planetary gear set on the same axis and selectively operating first to third clutches and brakes. CONSTITUTION:Simple type first and second planetary gear sets 22, 32 and a double pinion type third planetary gear set 42 are placed coaxially with input/ output shafts 12, 14, and first and second sun gears 24, 34 are linked together while linking a first carrier 30 to a third ring gear 50, second and third carriers 40, 52 together, and a second ring gear 38 to a third sun gear 44. The first gear is obtained by engaging a clutch 54 and a brake 60, while obtaining the second gear by the clutch 54 and a brake 62, the third gear by the clutch 54 and a brake 64, the fourth gear by clutches 54, 56, the fifth gear by the clutch 56 and brake 64, and the sixth gear by the clutch 56 and brake 62 which, further obtaining backing first/second gears by a clutch 58 and brakes 62/60, respectively. Thereby, advancing six stages can be obtained merely by the control of two engaging elements.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a gear transmission using a planetary gear mechanism suitable as a sub-transmission of an automatic transmission for an automobile.

[Prior Art] This type of gear transmission is constructed by combining a planetary gear set and engagement means such as clutch means and brake means, and gears are changed by controlling the engagement means. . For example, automobiles generally have four forward speeds and one reverse speed, but by increasing the number of speeds, smoother gear shifting becomes possible.

Multi-stage construction is easily possible, but the number of planetary gear sets and engagement means increases, making the structure complex and large.

Therefore, as a gear transmission that can achieve five or more forward gears while minimizing the complexity and size of the structure, we have developed two simple planetary gear sets and one
A combination of double pinion and simple planetary gear set has been proposed (Japanese Patent Laid-Open No. 1081-1981).
No. 68, No. 51-108170, etc.).

A gear transmission with such a combination can have a very large number of structures, including combinations with engagement means, but there are few that satisfy all of the conditions listed below, and most that lack one of the conditions. It is.

(1) One of the conditions is that the gear ratio in normal forward gears, excluding overdrive, be arranged in a manner close to a geometric series.

(2) One of the conditions is that the overdrive gear ratio must be able to ensure power performance.

(3) One of the conditions is that the gear ratio of each planetary gear set is appropriate and the outer diameter of the gear train can be made small.

(4) One of the conditions is that shifting to the next gear is possible by controlling the two engaging means.

For example, the above-mentioned JP-A-51-108168 and JP-A-51-108168
No. 108170 does not satisfy the condition (4) above, and the gear cannot be shifted to the next gear unless up to four engagement means are controlled. For this reason, it is difficult to accurately synchronize the operating timings of a large number of engaging means, which causes a shift shock.

[Problems to be Solved by the Invention] In view of the above, the present invention satisfies all of the above conditions and combines two sets of simple planetary gear sets and one set of double pinion simple planetary gear sets to shift gears of five or more forward gears. The objective of the present invention is to provide a gear transmission that can establish gears.

[Means for Solving the Problems] In the gear transmission according to the first invention, an input shaft rotatably supported with respect to the housing case, an output shaft rotatably supported with respect to the housing case, and an input shaft rotatably supported with respect to the housing case. A first sun gear rotatably supported with respect to the case and a first pinion that meshes with the first sun gear rotatably supported and coaxial with the first carrier and the first sun gear which are rotatably arranged with respect to the storage case. a first planetary gear set consisting of a simple planetary gear set in combination with a first ring gear which is disposed symmetrically and is rotatably arranged with respect to the housing case and meshes with the first pinion; A second planetary gear set consisting of a combined simple planetary gear set, a third sun gear rotatably supported with respect to the housing case, a third pinion meshing with the third sun gear, and a fourth pinion meshing with the third pinion. a third carrier rotatably supported and rotatably arranged with respect to the accommodation case; and a third carrier disposed coaxially with the third sun gear and rotatably arranged with respect to the accommodation case and meshing with the fourth pinion. A third planetary gear set consisting of a double pinion simple planetary gear set in combination with a three ring gear, first to third clutch means, and first to third brake means, the first sun gear and the second sun gear are connected, the first carrier and the third ring gear are connected, the second carrier and the third carrier are connected, the second ring gear, the third sun gear and the output shaft are connected, and the first clutch means is connected to the input shaft. The second clutch means is arranged so as to connect the input shaft to the first carrier and the third ring gear, and the third clutch means connects the input shaft to the first sun gear and the second ring gear.
The first brake means is arranged so as to be able to restrain the first carrier and the third ring gear relative to the housing case, and the second brake means is arranged so as to be able to restrain the first carrier and the third ring gear relative to the housing case. The third brake means is arranged such that the first sun gear and the second sun gear can be restrained relative to the housing case.

In the gear transmission according to the second invention, the input shaft is rotatably supported with respect to the housing case, the output shaft is rotatably supported with respect to the housing case, and the output shaft is rotatably supported with respect to the housing case. a first sun gear rotatably supporting a first pinion meshing with the first sun gear and rotatably disposed relative to the accommodation case; a first planetary gear set consisting of a simple planetary gear set in combination with a first ring gear that is rotatably arranged against the first ring gear and meshing with the first pinion; and a second planetary gear set consisting of a simple planetary gear set in the same combination as the first planetary gear set. and a third sun gear rotatably supported relative to the storage case, a third pinion meshing with the third sun gear, and a fourth pinion meshing with the third pinion rotatably supported and rotatable relative to the storage case. A double pinion simple planetary gear set consisting of a third carrier disposed on the third carrier and a third ring gear disposed coaxially with the third sun gear and rotatably disposed relative to the housing case and meshing with the fourth pinion. It includes a third planetary gear set, first to third clutch means, and first to third brake means, the first sun gear and the second ring gear are connected, and the first carrier, the second carrier, and the The third sun gear and the output shaft are connected, the first ring gear and the third ring gear are connected, the first clutch means is arranged to be able to connect the input shaft to the first sun gear and the second ring gear, and the second clutch means is arranged to be able to connect the input shaft to the first sun gear and the second ring gear. input shaft first
arranged so as to be connectable to the ring gear and the third ring gear,
The third clutch means is arranged to be able to connect the input shaft to the second sun gear, the first brake means is arranged to be able to restrain the first ring gear and the third ring gear with respect to the housing case, and the second brake means is arranged to be able to connect the input shaft to the second sun gear. The third brake means is arranged so as to be able to restrain the second sun gear relative to the accommodation case.

[Operation] In the first and second inventions serving as the above means, the first speed is selected by the connection by the first clutch means and the restraint by the first brake means, and the first speed is selected by the connection by the first clutch means and the restraint by the second brake means. The second speed is selected by the first clutch means, and the third speed is selected by the connection by the first clutch means and the restraint by the third brake means.
The speed is selected, the fourth speed is selected by connection by the first clutch means and the second clutch means, the fifth speed is selected by connection by the second clutch means and restraint by the third brake means, and the fifth speed is selected by connection by the second clutch means and restraint by the third brake means. The sixth speed is selected by the connection by the third clutch means and the restraint by the second brake means, the first reverse gear is selected by the connection by the third clutch means and the restraint by the second brake means, and the first reverse gear is selected by the connection by the third clutch means and the restraint by the second brake means. 1, the second reverse gear can be selected by restraint by the brake means.

[Example] Fig. 1 shows a first embodiment of the gear transmission of the first invention.
The embodiment is shown in a skeleton diagram with the lower half omitted.

Components of the gear transmission are housed in a transmission case 10 (only a part of the peripheral wall is shown in the figure) as a housing case.

The input shaft 12 serving as the input end is connected to the transmission case 1
0, and this input shaft 12
A first intermediate shaft 16 is arranged adjacent to and coaxially with the input shaft 12 in a straight line. The first intermediate shaft 16 is rotatably supported on the transmission case 10.

On the outside of the first intermediate shaft 16, coaxially with the first intermediate shaft 16,
An output shaft 14 serving as an output end is arranged and rotatably supported by the transmission case 10 independently of the first intermediate shaft 16. An output gear 15 is fixed to the output shaft 14.

The first planar gear set 22 includes a first sun gear 24 concentrically fixed to the first intermediate shaft 16, and a first sun gear 24 fixed to the first intermediate shaft 16.
4, a first ring gear 28 that meshes with the first pinion 26, and a first ring gear 28 that meshes with the first pinion 26.
6 and a first carrier 30 that rotatably supports the gear. 1st ring gear 2
8 and the first carrier 30 are the transmission case 1
It is arranged rotatably with respect to 0.

The second planetary gear set 32 includes a second sun gear 34 concentrically fixed to the first intermediate shaft 16, and a second sun gear 34 fixed to the first intermediate shaft 16.
a plurality of second pinions 36 that mesh with the second pinions 36; a second ring gear 38 that meshes with the second pinions 36;
6 and a second carrier 40 that rotatably supports the gear. 2nd ring gear 3
8 and the second carrier 40 are the transmission case 1
It is arranged rotatably with respect to 0.

The third planetary gear set 42 includes a third sun gear 44 concentrically fixed to the output shaft 14, a plurality of third pinions 46 meshing with the third sun gear 44, and a third pinion 46.
a plurality of fourth pinions 48 meshing with the fourth pinion 4;
8, a third ring gear 50 meshing with the third pinion 46;
and a third carrier 52 that rotatably supports the fourth pinion 48. The third ring gear 50 and the third carrier 52 are rotatably arranged with respect to the transmission case 10.

Here, the first carrier 30 and the third ring gear 50 are connected to rotate together.

Further, the second carrier 40 and the third carrier 52 are connected to rotate together. Furthermore, the second ring gear 38 is connected to the output shaft 14 and is connected to the third sun gear 44.
It is designed to rotate as one unit.

The first clutch means 54 is connected to the input shaft 12 and the first ring gear 2.
8 are arranged so as to be connectable. Second clutch means 5
6 is an input shaft 12, a first carrier 30, and a third ring gear 5
0 is arranged so that it can be connected. Third clutch means 5
8 is arranged so that the input shaft 12 and the first intermediate shaft 16 can be connected. The operation of these first clutch means 54 to third clutch means 58 is controlled by a hydraulic control device (not shown).
It operates to connect each part as described above.

The first brake means 60 is arranged so as to be able to restrain the first carrier 30 and the third ring gear 50 from rotating with respect to the transmission case 10. The second brake means 62 is arranged so as to be able to restrain the second carrier 40 and the third carrier 52 against rotation with respect to the transmission case 10. The third brake means 64 is arranged so as to be able to restrain the first sun gear 24 and the second sun gear 34 non-rotatably with respect to the transmission case 10 via the first intermediate shaft 16.

The operation of these first to third brake means 60 to 64 is controlled by a hydraulic control device (not shown), and operates to restrain each component as described above.

In this embodiment, the first planetary gear set 22 has a gear ratio ρ1 of 0.626, the second planetary gear set 32 has a gear ratio ρ2 of 0.471, and the third planetary gear set 42 has a gear ratio ρ3 of 0.626. It is 526.

Further, the first clutch means 54 to third clutch means 58 and the first brake means 60 to third brake means 64 are of a friction multi-plate type.

Next, the operation of this embodiment will be explained.

In addition, FIG. 2 shows the first clutch means 5 at each gear stage.
4~Third clutch means 58 and first brake means 60~
The operating status of the third brake means 64 (○ indicates operating status) and the gear ratio are shown.

First Speed In the first speed, the first clutch means 54 and the first brake means 60 are operated. As a result, the input shaft 12 and the first ring gear 28 are connected, and the first carrier 30
And the rotation of the third ring gear 50 is restricted.

The power input from the input shaft 12 is transferred to the first ring gear 28.
is transmitted to the first sun gear 24 via the first pinion 26, transmitted from the first sun gear 24 to the second sun gear 34 via the first intermediate shaft 16, and transmitted from the second sun gear 34 to the second sun gear 34.
transmitted to the second ring gear 38 via the pinion 36,
The signal is transmitted from the second ring gear 38 to the output shaft 14 . Further, a part of the power transmitted to the second sun gear 34 is transmitted to the second carrier 40 and the third carrier 52 via the second pinion 36, and from the third carrier 52 to the third pinion 4.
The signal is transmitted to the third sun gear 44 via the sixth and fourth pinions 48, and from the third sun gear 44 to the output shaft 14.

At this time, in the first planetary gear set 22, the first sun gear 24 rotates in the opposite direction to the input shaft 12, the first carrier 30 stops rotating, and the first ring gear 28 rotates in the opposite direction to the input shaft 12.
It rotates as one. Further, in the second planetary gear set 32, the second sun gear 34 rotates in the opposite direction to the input shaft 12, the second carrier 40 rotates in the opposite direction to the input shaft 12, and the second ring gear 38 rotates in the same direction as the input shaft 12. It is rotating. Further, in the third planetary gear set 42, the third sun gear 44 rotates integrally with the second ring gear 38 in the same direction as the input shaft 12, and the third carrier 52 rotates integrally with the second carrier 40, rotating the input shaft 12 integrally with the third carrier 52. The third ring gear 50 is rotating in the opposite direction, and the third ring gear 50 has stopped rotating.

In this first speed, the first planetary gear set 22, the second
The planetary gear set 32 and the third planetary gear set 42 are involved in the gear ratio, and thereby ρ1 (1
+ρ2ρ3)/ρ2 (1-ρ3) transmission ratio is obtained, and in this example, a numerical value of 3.499 is obtained.

Second speed In the second speed, the first clutch means 54 and the second brake means 62 are operated. That is, when shifting from the first speed, the first clutch means 54 remains activated, the first brake means 60 is deactivated, and the second brake means 62 is activated instead.

As a result, the input shaft 12 and the first ring gear 28 remain connected, and the second carrier 40 and the third carrier 5 are newly installed.
2 is restricted from rotation.

The power input from the input shaft 12 is transferred to the first ring gear 28.
is transmitted to the first sun gear 24 via the first pinion 26, transmitted from the first sun gear 24 to the second sun gear 34 via the first intermediate shaft 16, and transmitted from the second sun gear 34 to the second sun gear 34.
transmitted to the second ring gear 38 via the pinion 36,
The signal is transmitted from the second ring gear 38 to the output shaft 14 . Further, a part of the power manually applied from the input shaft 12 is transferred from the first ring gear 28 to the first carrier 3 via the first pinion 26.
from the third ring gear 50 to the third sun gear 44 via the fourth pinion 48 and the third pinion 46, and from the third sun gear 44 to the output shaft 14.

At this time, in the first planetary gear set 22, the first sun gear 24 rotates in the opposite direction to the input shaft 12, the first carrier 30 rotates in the same direction as the input shaft 12, and the first ring gear 24 rotates in the same direction as the input shaft 12.
8 rotates together with the input shaft 12. Further, in the second planetary gear set 32, the second sun gear 34 rotates in the opposite direction to the input shaft 12, the second carrier 40 stops rotating, and the second ring gear 38 rotates in the same direction as the input shaft 12. . Further, in the third planetary gear set 42, the third sun gear 44 rotates integrally with the second ring gear 38 in the same direction as the input shaft 12, the third carrier 52 stops rotating, and the third ring gear 50 rotates in the same direction as the input shaft 12. 30 and rotate in the same direction as the input shaft 12.

In this second speed, the first planetary gear set 22, the second
The planetary gear set 32 and the third planetary gear set 42 are involved in the gear ratio, and by them, (ρ2ρ3
A gear ratio of +ρ1 (1+ρ2ρ3))/ρ2 is obtained,
In this example, a value of 2.184 is obtained.

Third speed In the third speed, the first clutch means 54 and the third brake means 64 are operated. That is, when shifting from the second speed, the first clutch means 54 remains activated, the second brake means 62 is deactivated, and the third brake means 64 is activated instead.

As a result, the input shaft 12 and the first ring gear 28 remain connected, and the first sun gear 24 and the second sun gear 3 are newly connected.
4 is restricted from rotation.

The power input from the input shaft 12 is transmitted to the first ring gear 28.
is transmitted from the third ring gear 50 to the third sun gear 44 via the first pinion 26 and the fourth pinion 48 , and is transmitted from the third ring gear 50 to the third sun gear 44 via the fourth pinion 48 and the third pinion 46 . transmitted to. Further, a part of the power transmitted to the third ring gear 50 is transmitted to the third carrier 52 and the second carrier 40 via the third pinion 46 and the fourth pinion 48, and from the second carrier 40 to the second pinion 36. through the second ring gear 3
8 and is transmitted from the second ring gear 38 to the output shaft 14.

At this time, in the first planetary gear set 22, the first sun gear 24 stops rotating, and the first carrier 30 is connected to the input shaft 1.
2, the first ring gear 28 rotates in the same direction as the input shaft 12.
It rotates as one. Further, in the second planetary gear set 32, the second sun gear 34 stops rotating, the second carrier 40 rotates in the same direction as the input shaft 12, and the second ring gear 38 rotates in the same direction as the input shaft 12. . Also,
In the third planetary gear set 42, the third sun gear 44
rotates in the same direction as the input shaft 12 together with the second ring gear 38, the third carrier 52 rotates in the same direction as the input shaft 12 together with the second carrier 40, and the third ring gear 50 rotates in the same direction as the input shaft 12 together with the second carrier 40. It rotates together with the carrier 30 in the same direction as the input shaft 12.

In this third speed, the first planetary gear set 22, the second
The planetary gear set 32 and the third planetary gear set 42 are involved in the gear ratio, and by them, (1+ρ1
) A gear ratio of (1+ρ2ρ3)/(1+ρ2) is obtained, and in this example, a numerical value of 1.379 is obtained.

Fourth speed In the fourth speed, the first clutch means 54 and the second clutch means 56 are operated. That is, when shifting from the third speed, the first clutch means 54 remains in operation, the operation of the third brake means 64 is released, and the second clutch means 56 is operated instead.

As a result, the input shaft 12 is newly connected to the first carrier 30 and the third ring gear 50 while the input shaft 12 and the first ring gear 28 remain connected.

The power manually applied from the input shaft 12 via the first clutch means 54 is transmitted from the first ring gear 28 to the first pinion 26 to the first carrier 30 and the third ring gear 50, and from the third ring gear 50 to the fourth pinion. 48 and 3rd
is transmitted to the third sun gear 44 via the pinion 46,
It is transmitted to the output shaft 14. In addition, the power manually applied from the input shaft 12 via the second clutch means 56 is transmitted to the third ring gear 50, and is transmitted from the third ring gear 50 to the third sun gear 44 via the fourth pinion 48 and the third pinion 46.
and then to the output shaft 14. Further, a part of the power transmitted to the third ring gear 50 is transmitted from the third ring gear 50 to the third carrier 52 and the second carrier 40 via the third pinion 46 and the fourth pinion 48. from the second pinion 36 via the third pinion 36.
The signal is transmitted to the ring gear 38 , and from the second ring gear 38 to the output shaft 14 . Further, a part of the power transmitted to the second carrier 40 is transmitted to the second sun gear 34 via the second pinion 36, and from the second sun gear 34 to the first sun gear 24 via the first intermediate shaft I6. from the first sun gear 24 to the first carrier 3 via the first pinion 26.
0.

At this time, in the first planetary gear set 22, the first sun gear 24 rotates together with the input shaft 12, and the first carrier 3
0 rotates together with the input shaft 12, and the first ring gear 28 rotates together with the input shaft 12. Further, in the second planetary gear set 32, the second sun gear 34 is connected to the input shaft 12.
The second carrier 40 rotates together with the input shaft 12 , and the second ring gear 38 rotates together with the input shaft 12 . Further, in the third planetary gear set 42, the third sun gear 44 rotates together with the input shaft 12, and the third sun gear 44 rotates integrally with the input shaft 12.
The carrier 52 rotates together with the input shaft 12, and the third ring gear 50 rotates together with the input shaft 12.

In this fourth speed, the first planetary gear set 22, the second
Since the respective elements of the planetary gear set 32 and the third planetary gear set 42 are all integrated and rotate together with the input shaft 12, a gear ratio of 1 is obtained.

Fifth speed In the fifth speed, the second clutch means 56 and the third brake means 64 are operated. That is, when shifting from the fourth speed, the second clutch means 56 remains in operation, the first clutch means 54 is deactivated, and the third brake means 64 is activated instead.

As a result, the input shaft 12, the first carrier 30, and the third ring gear 50 remain connected, and the rotation of the first sun gear 24 and the second sun gear 34 is newly restrained.

The power input from the input shaft 12 is transmitted to the third ring gear 50.
from the third ring gear 50 to the fourth pinion 48.
It is transmitted to the third sun gear 44 via the third pinion 46 and then to the output shaft 14. Further, a part of the power transmitted to the third ring gear 50 is transmitted to the third carrier 52 and the second ring gear via the third pinion 46 and the fourth pinion 48.
The signal is transmitted to the carrier 40 , from the second carrier 40 via the second pinion 36 to the second ring gear 38 , and from the second ring gear 38 to the output shaft 14 .

At this time, in the first planetary gear set 22, the first sun gear 24 stops rotating, and the first carrier 30 is connected to the input shaft 1.
2, and the first ring gear 28 rotates in the same direction as the input shaft 12. Further, in the second planetary gear set 32, the second sun gear 34 stops rotating, the second carrier 40 rotates in the same direction as the input shaft I2, and the second ring gear 38 rotates in the same direction as the input shaft 12. . Also,
In the third planetary gear set 42, the third sun gear 44
rotates in the same direction as the input shaft 12 together with the second ring gear 38, the third carrier 52 rotates in the same direction as the input shaft 12 together with the second carrier 40, and the third ring gear 50 rotates in the same direction as the input shaft 12 together with the second carrier 40. It rotates together with the carrier 30 in the same direction as the input shaft 12.

In this fifth speed, the first planetary gear set 22 does not participate in the gear ratio, and the second planetary gear set 32 and the third planetary gear set 42 change the gear ratio to (1+ρ2ρ3).
)/(1+ρ2), which is 0 in this example.
．． A value of 848 was obtained.

Sixth speed In the sixth speed, the second clutch means 56 and the second brake means 62 are operated. That is, when shifting from the fifth speed, the second clutch means 56 remains activated, the third brake means 64 is deactivated, and the second brake means 62 is activated instead. This allows the input shaft 12 and the first
While the carrier 30 and the third ring gear 50 remain connected, the rotation of the second carrier 40 and the third carrier 52 is newly restricted.

The power input from the input shaft 12 is transmitted to the third ring gear 50.
from the third ring gear 50 to the fourth pinion 48.
It is transmitted to the third sun gear 44 via the third pinion 46 and then to the output shaft 14.

At this time, in the first planetary gear set 22, the first sun gear 24 rotates in the opposite direction to the input shaft 12, the first carrier 30 rotates together with the input shaft 12, and the first ring gear 28
is rotating in the same direction as the input shaft 12. Further, in the second planetary gear set 32, the second sun gear 34 rotates in the opposite direction to the input shaft 12, and the second carrier 40 rotates in the opposite direction to the input shaft 12.
The second ring gear 38 is rotating in the same direction as the input shaft 12. Further, in the third planetary gear set 42, the third sun gear 44 rotates together with the second ring gear 38 in the same direction as the input shaft 12, the third carrier 52 stops rotating, and the third ring gear 50 rotates in the same direction as the input shaft 12. It rotates together with the carrier 30 and the input shaft 12.

In this sixth speed, the first planetary gear set 22 and the second planetary gear set 32 do not participate in the gear ratio, and the third planetary gear set 42 provides a gear ratio of ρ3, which is a numerical value of 0.526 in this embodiment. I am getting .

Reverse (Part 1) In reverse, the third clutch means 58 and the second brake means 62 are operated. Thereby, the input shaft 12 and the first intermediate shaft 16 are connected, and the rotation of the second carrier 40 and the third carrier 52 is restrained.

The power input from the input shaft 12 is transmitted to the second sun gear 34 via the first intermediate shaft 16, and transmitted from the second sun gear 34 to the second ring gear 38 via the second pinion 36. and is transmitted to the output shaft 14.

At this time, in the first plane gear set 22, the first sun gear 24 rotates together with the input shaft 12, and the first carrier 3
0 rotates in the opposite direction to the input shaft 12, and the first ring gear 28
is rotating in the opposite direction to the input shaft 12. Further, in the second planetary gear set 32, the second sun gear 34 rotates together with the input shaft 12, the second carrier 40 stops rotating, and the second ring gear 38 rotates in the opposite direction to the input shaft 12. Further, in the third planetary gear set 42, the third
The sun gear 44 is integrated with the second ring gear 38 and rotates in the opposite direction to the input shaft 12, the third carrier 52 stops rotating, and the third ring gear 50 is integrated with the first carrier 30 and rotates in the opposite direction to the input shaft 12. rotating in the direction.

In this retraction, the first planetary gear set 22 and the third
The plane gear set 42 is not involved in the gear ratio and is
The planetary gear set 32 provides a gear ratio of -1/ρ2, which in this embodiment is -2,123.

Reverse (Part 2) In addition, in this embodiment, a larger gear ratio can be used for reverse, and it is possible to combine it with the aforementioned reverse to create two reverse gears, or to arbitrarily select either one. There is.

In this backward movement, the third clutch means 58 and the first brake means 60 are operated. This allows the input shaft 12 and the first
While the intermediate shaft 16 is connected, the rotation of the first carrier 30 and the third ring gear 50 is restrained.

The power manually applied from the input shaft 12 is transmitted to the second sun gear 34 via the first intermediate shaft 16, and transmitted from the second sun gear 34 to the second ring gear 38 via the second pinion 36. and is transmitted to the output shaft 14. In addition, a part of the power transmitted to the second sun gear 34 is
It is transmitted to the second carrier 40 and the third carrier 52 via the second pinion 36, and from the third carrier 52 to the third sun gear 4 via the third pinion 46 and the fourth pinion 48.
4 and then to the output shaft 14.

At this time, in the first planetary gear set 22, the first sun gear 24 rotates together with the input shaft 12, and the first carrier 3
0 has stopped rotating, and the first ring gear 28 is rotating in the opposite direction to the input shaft 12. Further, in the second planetary gear set 32, the second sun gear 34 rotates together with the input shaft 12, the second carrier 40 rotates in the same direction as the input shaft 12, and the second ring gear 38 rotates in the opposite direction to the input shaft 12. It's rotating. Further, in the third planetary gear set 42, the third
The sun gear 44 rotates together with the second ring gear 38 in the opposite direction to the input shaft 12, the third carrier 52 rotates together with the second carrier 40 in the same direction as the input shaft 12, and the third ring gear 50 rotates in the same direction as the input shaft 12. It has stopped rotating.

In this backward movement, the first planetary gear set 22 does not take part in the transmission ratio, and the second planetary gear set 32 and the third planetary gear set 32
By the planetary gear set 42, (1+ρ1ρ2)
A gear ratio of /ρ2 (1-ρ3) is obtained, and in this example, a numerical value of -5,589 is obtained.

In the gear transmission device of the first embodiment configured and operated as described above, the desired problems can be solved, and the first sun gear 24 and the second sun gear 34 can be integrated into a long pinion. Furthermore, the first to third brake means 60 to 64 can be centrally arranged around the output shaft 14.

In addition, in the above embodiment, the first clutch means 54 to third clutch means 58 and the first brake means 6 as engaging means are used.
Although all of the zero to third brake means 64 are constructed of a single friction multi-plate type, they may also be constructed as described below.

The first clutch means 54 can have the configuration shown in FIG. That is, the one-way clutch 68 may be coupled in series with the multi-disc clutch 66 of the friction multi-disc type described above, thereby making it possible to transmit torque only from the input shaft 12 to the first ring gear 28.

Therefore, in the first to fourth speeds in which the first clutch means 54 is in the operating state, no torque is transmitted from the first ring gear 28 to the input shaft 12, and the engine brake is released, improving fuel efficiency and quietness. It has the advantage of improving

Furthermore, when shifting between 1st to 4th speeds and 5th or 6th speed, the first ring gear 28 rotates faster than the input shaft 12 in the 5th or 6th speed. , in the first to fourth speeds, the first ring gear 28 is at the same speed as the input shaft 12 or less than the same speed, so when upshifting, the first clutch means 54 is automatically activated by the action of the one-way clutch 68. The timing of starting or releasing the first clutch means 54 can be adjusted precisely because the first ring gear 28 and the input shaft 12 are synchronized in rotation when shifting down. Shift shock can be suppressed even without setting, and shift control becomes easier.

Further, the first clutch means 54 can have the configuration shown in FIG. 4. That is, as shown in FIG. 3, the multi-disc clutch 66 and the one-way clutch 68 may be coupled in series, and the multi-disc clutch 70 may be coupled in parallel.

Therefore, it has the same advantages as the one shown in FIG. 3, and by selectively operating the multi-disc clutch 70, engine braking can be applied as necessary, such as when exiting the vehicle.

The second clutch means 56 can have a configuration similar to that shown in FIGS. 3 and 4 above, and in the fourth, fifth and sixth speeds in which the second clutch means 56 is in the operating state. The engine brake is released, improving fuel efficiency and quietness, and depending on the configuration, the engine brake can be applied as needed.

The third clutch means 58 has the same structure as shown in FIGS. 3 and 4, and includes a multi-disc clutch 66 and a one-way clutch 68 connected in series as shown in FIG. A one-way clutch 72 whose engagement direction is opposite to the above is connected in parallel,
As shown in FIG. 6, it may be composed of a multi-disc clutch 66 and a one-way clutch 72 connected in parallel, and in this case also, the third clutch means 58 is activated. In (1 and 2), fuel efficiency and quietness are improved, and depending on the configuration, engine braking can be applied as needed.

Further, this third clutch means 58 is connected to the first clutch means 5.
By operating simultaneously with the fourth or second clutch means 56, a power transmission path different from that of the above embodiment can be taken in the fourth speed. In the fourth speed, which is operated simultaneously with the first clutch means 54, fuel efficiency and quietness are improved by releasing the one-way clutch 68 as described above. Furthermore, in the fourth speed due to the simultaneous operation with the second clutch means 56, the one-way clutch 72 is automatically released, thereby improving fuel efficiency and quietness, and also improving the speed between the fourth speed and the fifth or sixth speed. This makes it easier to control the speed change between the two.

The first braking means 60 has the same construction as shown in FIGS. 3 and 4, and a multi-disc clutch 66 and a one-way clutch 6 connected in series as shown in FIG.
8, a multi-disc clutch 70 and a one-way clutch 72 coupled in series are coupled in parallel, and a multi-disc clutch 66 and a one-way clutch 72 coupled in series as shown in FIG. There are two types of brakes, one in which the brakes are connected in parallel, one in which the band brake has a band brake 74 that applies braking force in one direction as shown in FIG.
As shown in the figure, a band brake 74 is connected in parallel with a band brake 76 whose braking direction is opposite to that of the band brake 74, and a multi-disc clutch 66 and a band brake 74 are connected in parallel as shown in FIG. It can be configured in such a way that it is combined with

In these cases as well, in the first gear and reverse (part 2) when the first brake means 60 operates, fuel efficiency and quietness are improved, and depending on the configuration, engine braking can be applied as necessary. Furthermore, 1st gear and 2nd gear
It becomes easy to control the speed change between speeds 1 to 6.

The second brake means 62 is shown in FIGS. 4, 7, and 8.
The configuration can be the same as that shown in FIG. 9, FIG. 10, and FIG. 11, and the fuel efficiency and The quietness is improved, and depending on the configuration, engine braking can be applied as needed, and furthermore, the speed change control between the second speed and the third to sixth speeds becomes easier.

The third brake means 64, like the second brake means 62, may have the same construction as shown in FIGS. 4, 7, 8, 9, 10, and 11. In the third and fifth speeds where the third brake means 64 operates, fuel efficiency and quietness are improved, and depending on the configuration, engine braking can be applied as necessary. Shift control between 4th speed, 5th speed, and 6th speed becomes easy.

FIG. 12 shows a second embodiment as an example which is provided with engagement means different from the first embodiment described above.

In the gear transmission of this second embodiment, the first clutch means 54 has the configuration shown in FIG. 4, the first brake means 60 has the configuration shown in FIG. 3, and the second clutch means 54 has the configuration shown in FIG.
The brake means 62 has the structure shown in FIG. 4, and the third brake means 64 has the structure shown in FIG.

Further, FIG. 13 shows a third embodiment in which the first invention is applied to a front wheel drive vehicle with a horizontally installed engine.

In this embodiment, the input shaft 12 is passed inside the first intermediate shaft 16, and the position of the third clutch means 58 is changed accordingly. The output gear 15 is linked to a differential gear 82 via an intermediate gear 80, and a shaft 84 of the differential gear 82 is connected to a drive shaft.

In the case of this embodiment as well, the engaging means can be configured as described above.

FIG. 14 shows a fourth embodiment of the gear transmission according to the second invention.

Components of the gear transmission are housed in a transmission case 10 (only a part of the peripheral wall is shown in the figure) as a housing case.

The input shaft 12 serving as the input end is connected to the transmission case 1
0, and this input shaft 12
A first intermediate shaft 16 is arranged adjacent to and coaxially with the input shaft 12 in a straight line. The first intermediate shaft 16 is rotatably supported on the transmission case 10.

On the outside of the first intermediate shaft 16, coaxially with the first intermediate shaft 16,
A second intermediate shaft 18 and an output shaft 14 serving as an output end are arranged in order from the side closest to the input shaft 12, and each is rotatably supported with respect to the transmission case 10 independently of the first intermediate shaft 16. There is. An output gear 15 is fixed to the output shaft 14.

The first planetary gear set 22 has a first sun gear 24 fixed concentrically to the second intermediate shaft 18, and is constructed of the same combination as in the first embodiment. The second planetary gear set 32 has a second sun gear 34 fixed concentrically to the first intermediate shaft 16, and is constructed from the same combination as the first embodiment. The third planetary gear set 42 is
A third sun gear 44 is fixed concentrically to the output shaft 14,
It is constructed from the same combination as the first embodiment.

Here, the second ring gear 38 is connected to the second intermediate shaft 18 and rotates integrally with the first sun gear 24. The first carrier 30, the second carrier 40, and the output shaft 14 are connected to rotate together. Also,
The first ring gear 28 and the third ring gear 50 are connected to rotate together.

The first clutch means 54 is arranged to connect the input shaft 12 and the second intermediate shaft 18. The second clutch means 56 includes the input shaft 12, the first ring gear 28, and the third ring gear 50.
are arranged so that they can be connected. Third clutch means 58
is arranged so that the input shaft 12 and the first intermediate shaft 16 can be connected. The operation of these first clutch means 54 to third clutch means 58 is controlled by a hydraulic control device (not shown), and operates to connect each component as described above.

The first brake means 60 is arranged so as to be able to restrain the first ring gear 28 and the third ring gear 50 from rotating with respect to the transmission case 10. The second brake means 62 is arranged so as to be able to restrain the third carrier 52 against rotation with respect to the transmission case IO. The third brake means 64 connects the second sun gear 34 to the transmission case 10 via the first intermediate shaft 16.
It is arranged so that it can be restrained against rotation.

The operation of these first to third brake means 60 to 64 is controlled by a hydraulic control device (not shown), and operates to restrain each component as described above.

In this embodiment, the first planetary gear set 22 has a gear ratio ρ1 of 0.400, the second planetary gear set 32 has a gear ratio ρ2 of 0.379, and the third planetary gear set 42 has a gear ratio ρ3 of 0.400. It is 526.

Further, the first clutch means 54 to third clutch means 58 and the first brake means 60 to third brake means 64 are of a friction multi-plate type.

Next, the operation of this embodiment will be explained.

In addition, FIG. 15 shows the first clutch means 54 to third clutch means 58 and first brake means 60 at each gear stage.
- The operating status of the third brake means 64 (○ indicates the operating state) and the gear ratio are shown.

First speed In the first speed, the first clutch means 54 and the first brake means 60 are operated. Thereby, the input shaft 12 and the second intermediate shaft 18 are connected, and the rotation of the first ring gear 28 and the third ring gear 50 is restrained.

The power manually applied from the input shaft 12 is transmitted to the first sun gear 24 via the second intermediate shaft 18, transmitted from the first sun gear 24 to the first carrier 30 via the first pinion 26, and then transmitted to the output shaft 14. communicated.

At this time, in the first planetary gear set 22, the first sun gear 24 rotates together with the input shaft 12, and the first carrier 3
0 rotates in the same direction as the input shaft 12, and the first ring gear 28
has stopped rotating. Further, in the second planetary gear set 32, the second sun gear 34 rotates in the opposite direction to the input shaft 12, the second carrier 40 rotates together with the first carrier 30 in the same direction as the input shaft 12, and the second ring gear 3
8 rotates together with the first sun gear 24 and the input shaft 12. Furthermore, in the third planetary gear set 42,
The third sun gear 44 rotates in the same direction as the input shaft 12 together with the first carrier 30 and the second carrier 40, and the third sun gear 44 rotates in the same direction as the input shaft 12.
The carrier 52 rotates in the opposite direction to the input shaft 12, and the third ring gear 50 stops rotating.

In this first speed, the second planetary gear set 32 and the third planetary gear set 42 are not involved in the gear ratio, and the first planetary gear set 22 shifts the gear ratio to (1+ρ1)/
A gear ratio of ρ1 is obtained, and in this example, a numerical value of 3.500 is obtained.

Second speed In the second speed, the first clutch means 54 and the second brake means 62 are operated. That is, when shifting from the first speed, the first clutch means 54 remains activated, the first brake means 60 is deactivated, and the second brake means 62 is activated instead.

As a result, rotation of the third carrier 52 is newly restrained while the input shaft 12 and the second intermediate shaft 18 remain connected.

The power input from the input shaft 12 is transmitted to the first sun gear 24 via the second intermediate shaft 18 , and transmitted from the first sun gear 24 to the first carrier 30 via the first pinion 26 . and is transmitted to the output shaft 14. Further, a part of the power transmitted to the first carrier 30 is transmitted to the third sun gear 44, and from the third sun gear 44 to the third ring gear 50 and the first ring gear 28 via the third pinion 46 and the fourth pinion 48. is transmitted from the first ring gear 28 to the first carrier 30 via the first pinion 26.
transmitted to.

At this time, in the first planetary gear set 22, the first sun gear 24 rotates together with the input shaft 12, and the first carrier 3
0 rotates in the same direction as the input shaft 12, and the first ring gear 28
is rotating in the same direction as the input shaft 12. Further, in the second planetary gear set 32, the second sun gear 34 rotates in the opposite direction to the input shaft 12, the second carrier 40 rotates together with the first carrier 30 in the same direction as the input shaft 12, and the second The ring gear 38 is attached to the input shaft 1 together with the first sun gear 24.
It rotates together with 2. Further, in the third planetary gear set 42, the third sun gear 44 rotates in the same direction as the input shaft 12 together with the first carrier 30 and the second carrier 40, the third carrier 52 stops rotating, and the third ring gear 50 is integrated with the first ring gear 28 to form the input shaft 1.
It is rotating in the same direction as 2.

In this second speed, the second planetary gear set 32 does not participate in the gear ratio, and the first planetary gear set 22 and the third planetary gear set 42 shift the gear ratio to (1+ρ1−ρ
3)/ρ1 is obtained, which is 2.185 in this example.
are obtained.

Third Speed In the third speed, the first clutch means 54 and the third brake means 64 are operated. That is, when shifting from the second speed, the first clutch means 54 remains activated, the second brake means 62 is deactivated, and the third brake means 64 is activated instead.

As a result, the rotation of the second sun gear 34 is newly restrained while the input shaft 12 and the second intermediate shaft 18 remain connected.

The power input from the input shaft 12 is transmitted to the second ring gear 38 via the second intermediate shaft 18, and the power is transmitted to the second ring gear 38 via the second intermediate shaft 18.
8 to the second carrier 40 via the second pinion 36, and from the second carrier 40 to the output shaft 14.

At this time, in the first planetary gear set 22, the first sun gear 24 rotates together with the input shaft 12, and the first carrier 3
0 rotates in the same direction as the input shaft 12, and the first ring gear 28
is rotating in the same direction as the input shaft 12. Further, in the second planetary gear set 32, the second sun gear 34 stops rotating, the second carrier 40 rotates together with the first carrier 30 in the same direction as the input shaft 12, and the second ring gear 34 stops rotating.
8 rotates together with the first sun gear 24 and the input shaft 12. Furthermore, in the third planetary gear set 42,
The third sun gear 44 rotates in the same direction as the input shaft 12 together with the first carrier 30 and the second carrier 40, the third carrier 52 rotates in the same direction as the input shaft 12, and the third ring gear 50' rotates in the same direction as the input shaft 12. It rotates together with the first ring gear 28 in the same direction as the input shaft 12.

In this third speed, the first planetary gear set 22 and the third planetary gear set 42 are not involved in the gear ratio, and the second planetary gear set 32 provides a gear ratio of 1+ρ2, which is a numerical value of 1.379 in this embodiment. I am getting .

Fourth speed In the fourth speed, the first clutch means 54 and the second clutch means 56 are operated. That is, when shifting from the third speed, the first clutch means 54 remains in operation, the operation of the third brake means 64 is released, and the second clutch means 56 is operated instead.

As a result, the input shaft 12 and the second intermediate shaft 18 remain connected, and the first ring gear 28 and the third ring gear are newly connected to the input shaft 12.
A ring gear 50 is connected.

Power input from the input shaft 12 via the first clutch means 54 is transmitted to the first sun gear 24 via the second intermediate shaft 18, and from the first sun gear 24 to the first carrier 30 via the first pinion 26. and is transmitted from the first carrier 30 to the output shaft 14. Further, the power input from the input shaft 12 via the second clutch means 56 is transferred from the first ring gear 28 to the first carrier 30 via the first pinion 26.
from the first carrier 30 to the output shaft 14.

At this time, in the first planetary gear set 22, the first sun gear 24 rotates together with the input shaft 12, and the first carrier 3
0 rotates together with the input shaft 12, and the first ring gear 28 rotates together with the input shaft 12. Further, in the second planetary gear set 32, the second sun gear 34 is connected to the input shaft 12.
The second carrier 40 rotates together with the input shaft 12 , and the second ring gear 38 rotates together with the input shaft 12 . Further, in the third planetary gear set 42, the third sun gear 44 rotates together with the input shaft 12, and the third sun gear 44 rotates integrally with the input shaft 12.
The carrier 52 rotates together with the input shaft 12, and the third ring gear 50 rotates together with the input shaft 12.

In this fourth speed, the first planetary gear set 22, the second
Since the respective elements of the planetary gear set 32 and the third planetary gear set 42 are all integrated and rotate together with the input shaft 12, a gear ratio of 1 is obtained.

Fifth speed In the fifth speed, the second clutch means 56 and the third brake means 64 are operated. That is, when shifting from the fourth speed, the second clutch means 56 remains activated, the first clutch means 540 is deactivated, and the third brake means 64 is activated instead.

As a result, the input shaft 12, the first ring gear 28 and the third
The rotation of the second sun gear 34 is newly restricted while the ring gear 50 remains connected.

The power input from the input shaft 12 is transmitted to the first ring gear 28.
is transmitted to the first carrier 30 via the first pinion 26, and from the first carrier 30 to the output shaft 14.

Further, a part of the power transmitted to the first carrier 30 is transmitted from the second carrier 40 via the second pinion 36 to the second ring gear 38, and from the second ring gear 38 via the second intermediate shaft 18 to the second ring gear 38. The signal is transmitted to the first sun gear 24 , and from the first sun gear 24 to the first carrier 30 via the first pinion 26 .

At this time, in the first planetary gear set 22, the first sun gear 24 rotates in the same direction as the input shaft 12, the first carrier 30 rotates in the same direction as the input shaft 12, and the first ring gear 24 rotates in the same direction as the input shaft 12.
8 rotates together with the input shaft 12. Further, in the second planetary gear set 32, the second sun gear 34 stops rotating, the second carrier 40 rotates together with the first carrier 30 in the same direction as the input shaft 12, and the second ring gear 34 stops rotating.
8 rotates integrally with the first sun gear 24 in the same direction as the input shaft 12. Also, the third planetary gear set 4
2, the third sun gear 44 connects the first carrier 30 and the second
The third carrier 52 rotates in the same direction as the input shaft 12 together with the carrier 40, and the third ring gear 50 rotates together with the first ring gear 28 in the same direction as the input shaft 12. There is.

In the fifth speed, the third planetary gear set 42 does not participate in the gear ratio, and the first planetary gear set 22 and the second planetary gear set 32 provide a gear ratio of 1-ρ1ρ2, which is 0.848 in this embodiment. are obtained.

Sixth speed In the sixth speed, the second clutch means 56 and the second brake means 62 are operated. That is, when shifting from the fifth speed, the second clutch means 56 remains in operation, the third brake means 64 is deactivated, and the second brake means 62 is activated instead.

As a result, the input shaft 12, the first ring gear 28 and the third
The rotation of the third carrier 52 is newly restricted while the ring gear 50 remains connected.

The power input from the input shaft 12 is transmitted to the third ring gear 50.
It is transmitted from the third sun gear 44 via the fourth pinion 48 and the third pinion 46, and from the third sun gear 44 to the output shaft 14.

At this time, in the first planetary gear set 22, the first sun gear 24 rotates in the same direction as the input shaft 12, the first carrier 30 rotates in the same direction as the input shaft 12, and the first ring gear 24 rotates in the same direction as the input shaft 12.
8 rotates together with the input shaft 12. Further, in the second planetary gear set 32, the second sun gear 34 rotates in the opposite direction to the input shaft 12, the second carrier 40 rotates together with the first carrier 30 in the same direction as the input shaft 12, and the second A ring gear 38 rotates together with the first sun gear 24 in the same direction as the input shaft 12. Further, in the third planetary gear set 42, the third sun gear 44 rotates in the same direction as the input shaft 12 together with the first carrier 30 and the second carrier 40, the third carrier 52 stops rotating, and the third ring gear 50 rotates together with the first ring gear 28 and the input shaft 12.

In this sixth speed, the first planetary gear set 22 and the second planetary gear set 32 do not participate in the gear ratio, and the third planetary gear set 42 provides a gear ratio of ρ3, which is a numerical value of 0.526 in this embodiment. I am getting .

Reverse Part 1) In reverse, the third clutch means 58 and the second brake means 62 are operated. Thereby, the input shaft 12 and the first intermediate shaft 16 are connected, and the rotation of the third carrier 52 is restrained.

The power manually applied from the input shaft 12 is transmitted to the second sun gear 34 via the first intermediate shaft 16, and transmitted from the second sun gear 34 to the second ring gear 38 via the second pinion 36. is transmitted from the first sun gear 24 to the first sun gear 24 via the second intermediate shaft 18, and from the first sun gear 24 to the first carrier 30 via the first pinion 26,
The signal is transmitted from the first carrier 30 to the output shaft 14 . Also,
A part of the power transmitted to the first carrier 30 is transmitted to the third sun gear 44, and from the third sun gear 44 to the third ring gear 5 via the third pinion 46 and the fourth pinion 48.
0 and the first ring gear 28 , and from the first ring gear 28 to the first carrier 30 via the first pinion 26 . Further, a part of the power transmitted to the first carrier 30 is transmitted from the second carrier 40 to the second ring gear 38 via the second pinion 36.

At this time, in the first planetary gear set 22, the first sun gear 24 rotates in the opposite direction to the input shaft 12, the first carrier 30 rotates in the opposite direction to the input shaft 12, and the first ring gear 24 rotates in the opposite direction to the input shaft 12.
8 is rotating in the opposite direction to the input shaft 12. Further, in the second planetary gear set 32, the second sun gear 34 rotates together with the input shaft 12, the second carrier 40 rotates together with the first carrier 30 in the opposite direction to the input shaft 12, and the second ring gear 38 rotates integrally with the first sun gear 24 in the opposite direction to the input shaft 12. Further, in the third planetary gear set 42, the third sun gear 44 rotates in the opposite direction to the input shaft 12 together with the first carrier 30 and the second carrier 40, the third carrier 52 stops rotating, and the third ring gear 50 rotates integrally with the first ring gear 28 in the opposite direction to the input shaft 12.

In this reversing, the first planetary gear set 22, the second planetary gear set 32, and the third planetary gear set 42 are involved in the gear ratio, so that (1-ρ3-
A gear ratio of ρ1ρ2)/ρ1ρ2 is obtained, and in this example, a numerical value of -2,127 is obtained.

Reverse (Part 2) In addition, in this embodiment, the reverse can be set to a larger gear ratio, and it can be combined with the aforementioned reverse to create two reverse speeds, or
Either one can be arbitrarily selected.

In this backward movement, the third clutch means 58 and the first brake means 60 are activated. This allows the input shaft 12 and the first
The intermediate shaft 16 is connected, and the first ring gear 28
The rotation of the third ring gear 50 and the third ring gear 50 is restricted.

The power input from the input shaft 12 is transmitted to the second sun gear 34 via the first intermediate shaft 16, and transmitted from the second sun gear 34 to the second ring gear 38 via the second pinion 36. is transmitted from the first sun gear 24 to the first sun gear 24 via the second intermediate shaft 18, and from the first sun gear 24 to the first carrier 30 via the first pinion 26,
The signal is transmitted from the first carrier 30 to the output shaft 14 . Also,
A portion of the power transmitted from the first carrier 30 is transmitted from the second carrier 40 to the second ring gear 38 via the second pinion 36.

At this time, in the first planetary gear set 22, the first sun gear 24 rotates in the opposite direction to the input shaft 12, the first carrier 30 rotates in the opposite direction to the input shaft 12, and the first ring gear 24 rotates in the opposite direction to the input shaft 12.
8 has stopped rotating. Further, in the second planetary gear set 32, the second sun gear 34 rotates together with the input shaft 12, the second carrier 40 rotates together with the first carrier 30 in the opposite direction to the input shaft 12, and the second ring gear 3
8 rotates integrally with the first sun gear 24 in the opposite direction to the input shaft 12. In addition, the third planetary gear set 4
2, the third sun gear 44 connects the first carrier 30 and the second
It rotates together with the carrier 40 in the opposite direction to the input shaft 12, the third carrier 52 rotates in the same direction as the input shaft 12, and the third ring gear 50 stops rotating.

In this backward movement, the third planetary gear set 42 does not take part in the transmission ratio, and the first planetary gear set 22 and the second planetary gear set 42
By the planetary gear set 32, -(1-ρ1ρ2
)/ρ1ρ2, and in this example, -5,5
I got a value of 96.

In the gear transmission of the fourth embodiment configured and operated as described above, the desired problems can be solved, and the first to third brake means 60 to 64 are connected to the output shaft 140.
It can be placed centrally around the area.

In the above embodiment, the first clutch means 54 to third clutch means 58 and the first brake means 60 to third brake means 64 as engagement means are all constructed of a single friction single plate type. However, each of the above figures 3 to 11
It is also possible to adopt the configuration described in the figures.

FIG. 16 shows a fifth embodiment as an example, which is provided with engagement means different from that of the fourth embodiment.

In the gear transmission of this fifth embodiment, the first clutch means 54, first brake means 60, second brake means 62, and third brake means 64 have the same construction as in the second embodiment.

Further, FIG. 17 shows a sixth embodiment in which the second invention is applied to a front-wheel drive vehicle with a horizontally installed engine, and in this embodiment, the input shaft 12 is located inside the first intermediate shaft 16. passed,
Along with this, the arrangement position of the third clutch means 58 has been changed.

In the case of this embodiment as well, the engaging means can be configured as described above.

[Effect of the invention] As explained above, the gear transmission according to the present invention has two
When combining two simple planetary gear sets and one double pinion simple planetary gear set to create five or more forward gears, the gear ratio in normal forward gears, excluding overdrive, is close to a geometric series. The gear ratio of the overdrive can ensure power performance, the gear ratio of each planetary gear set is appropriate, the outer diameter of the gear train can be reduced, and the gear shift to the next stage controls the two engagement elements. This has the effect that is possible.

[Brief Description of the Drawings] Fig. 1 is a skeleton diagram showing the first embodiment of the gear transmission according to the present invention, Fig. 2 is a table diagram showing the operating status of the engagement means in the first embodiment, and Fig. 3 is a diagram showing the operating status of the engagement means in the first embodiment. 11 are schematic diagrams showing modified examples of the engaging means, FIG. 12 is a skeleton diagram showing the second embodiment, FIG. 13 is a skeleton diagram showing the third embodiment, and FIG. 14 is a skeleton diagram showing the third embodiment. Skeleton diagram showing 4th embodiment, 1st
5 is a table diagram showing the operating status of the engaging means in the fourth embodiment, FIG. 16 is a skeleton diagram showing the fifth embodiment, and FIG.
The figure is a skeleton diagram showing the sixth embodiment. 12...Input shaft, 14...Output shaft, 22...First
Planetary gear set, 24...first sun gear, 26
. . . 1st pinion, 28 . . . 1st ring gear, 30
...First carrier, 32...Second planetary gear set, 34...Second sun gear, 36...Second pinion, 38...Second ring gear, 40...Second carrier, 42... ...Third planetary gear set, 44...
Third sun gear, 46... third pinion, 48... fourth pinion, 50... third ring gear, 52... third carrier, 54... first clutch means, 56...
Second clutch means, 58...Third clutch means, 60
...first brake means, 62...second brake means, 64...third brake means. Figure 1

Claims (2)

[Claims] (1) An input shaft rotatably supported with respect to the housing case, an output shaft rotatably supported with respect to the housing case, a first sun gear rotatably supported with respect to the housing case, and a first sun gear rotatably supported with respect to the housing case. A first pinion that rotatably supports a first pinion that meshes with the sun gear and is rotatably arranged relative to the housing case.
a first planetary gear set consisting of a simple planetary gear set that is a combination of a carrier and a first ring gear that is arranged coaxially with the first sun gear and is rotatably arranged with respect to the housing case and meshes with the first pinion;
A second planetary gear set consisting of a simple planetary gear set with the same combination as the first planetary gear set, a third sun gear rotatably supported on the housing case, a third pinion meshing with the third sun gear, and a third pinion meshing with the third sun gear. A third carrier rotatably supports a fourth pinion and is rotatably arranged with respect to the housing case; A third planetary gear set consisting of a double pinion simple planetary gear set in combination with a third ring gear meshing with a pinion, first to third clutch means, and first to third brake means; and the second sun gear are connected, the first carrier and the third ring gear are connected,
The second carrier and the third carrier are connected, the second ring gear, the third sun gear, and the output shaft are connected, the first clutch means is arranged to be able to connect the input shaft to the first ring gear, and the second clutch means is arranged to be able to connect the input shaft to the first ring gear. The input shaft is arranged to be connectable to the first carrier and the third ring gear, the third clutch means is arranged to be able to connect the input shaft to the first sun gear and the second sun gear, and the first brake means is arranged to be able to connect the input shaft to the first carrier and the third ring gear. The third ring gear is arranged so as to be able to be restrained with respect to the accommodation case, the second brake means is arranged so that the second carrier and the third carrier can be restrained with respect to the accommodation case, and the third brake means is arranged so that the third ring gear can be restrained with respect to the accommodation case. A gear transmission characterized in that a sun gear is arranged such that it can be restrained with respect to a housing case. (2) An input shaft rotatably supported with respect to the housing case, an output shaft rotatably supported with respect to the housing case, a first sun gear rotatably supported with respect to the housing case, and a first sun gear rotatably supported with respect to the housing case. A first pinion that rotatably supports a first pinion that meshes with the sun gear and is rotatably arranged relative to the housing case.
a first planetary gear set consisting of a simple planetary gear set that is a combination of a carrier and a first ring gear that is arranged coaxially with the first sun gear and is rotatably arranged with respect to the housing case and meshes with the first pinion;
A second planetary gear set consisting of a simple planetary gear set with the same combination as the first planetary gear set, a third sun gear rotatably supported on the housing case, a third pinion meshing with the third sun gear, and a third pinion meshing with the third sun gear. A third carrier rotatably supports a fourth pinion and is rotatably arranged with respect to the housing case; A third planetary gear set consisting of a double pinion simple planetary gear set in combination with a third ring gear meshing with a pinion, first to third clutch means, and first to third brake means; and the second ring gear are connected, the first carrier, the second carrier, the third sun gear and the output shaft are connected, the first ring gear and the third ring gear are connected, and the first clutch means connects the input shaft to the first The second clutch means is arranged to be connectable to the sun gear and the second ring gear, the second clutch means is arranged to be able to connect the input shaft to the first ring gear and the third ring gear, and the third clutch means is able to connect the input shaft to the second sun gear. The first brake means is arranged to be able to restrain the first ring gear and the third ring gear to the housing case, the second brake means is arranged to be able to restrain the third carrier to the housing case, and the first brake means is arranged to be able to restrain the third carrier to the housing case, A gear transmission characterized in that the brake means is arranged to be able to restrain the second sun gear with respect to the housing case.