JPH02118240A - gear transmission - Google Patents

Abstract

PURPOSE:To obtain the speed change stages of above five advancing stages by placing simple type first, double pinion type second, and simple type third planetary gear sets in order and selectively operating first to third clutches and brakes. CONSTITUTION:Simple type first, double pinion type second, and simple type third planetary gear sets 22, 32, 42 are placed coaxially with an input shaft 12, and a first carrier 30, second and third ring gears 38, 50 and an output gear 15 are linked together, while linking a first sun gear 24 to a second carrier 40, and a second sun gear 34 to a third carrier 52. 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 while, further obtaining backing stages by a clutch 58 and brakes 62/60, respectively. Thereby, the speed change stages of 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. 51-1081).
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 has an arrangement J- 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; and a first planetary gear set that is rotatably supported with respect to the housing case. A second carrier and a second sun gear that rotatably support a second sun gear, a second pinion that meshes with the second sun gear, and a third pinion that meshes with the second pinion, and are rotatably arranged with respect to the storage case. a second planetary gear set consisting of a double pinion simple planetary gear set in combination with a second ring gear arranged coaxially with the storage case and rotatably arranged with respect to the housing case and meshing with the third pinion; and a first planetary gear set. A third planetary gear set consisting of a similar combination of simple planetary gear sets, first to third clutch means, and first to third brake means, the first sun gear and the second carrier are connected, The first carrier, the second ring gear, the third ring gear, and the output shaft are connected,
The second sun gear and the third carrier are connected, the first clutch means is arranged so that the input shaft can be connected to the first sun gear and the second carrier, and the second clutch means is arranged so that the input shaft can be connected to the first ring gear. The third clutch means is arranged to be able to connect the input shaft to the third sun gear, the first brake means is arranged to be able to restrain the first 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 third sun gear. The third carrier is arranged so as to be able to be restrained with respect to the housing case, and the third brake means is arranged so that the third sun gear can be restrained with respect 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 disposed relative to the first ring gear and meshes with the first pinion; a second sun gear that is rotatably supported with respect to the housing case; A second carrier that rotatably supports a second pinion that meshes with the second pinion and a third pinion that meshes with the second pinion and is rotatably arranged with respect to the storage case and a second sun gear that is coaxially arranged and accommodated. a second planetary gear set consisting of a double pinion simple planetary gear set in combination with a second ring gear that is rotatably arranged with respect to the case and meshing with a third pinion; and a simple planetary gear set in the same combination as the first planetary gear set. It includes a third planetary gear set, first to third clutch means, and first to third brake means, the first carrier, the second carrier, the third ring gear, and the output shaft are connected, and the first The ring gear and the second ring gear are connected, the second sun gear and the third carrier are connected, the first clutch means is arranged to connect the input shaft to the first sun gear, and the second clutch means connects the input shaft to the first sun gear. The third clutch means is arranged to be connectable to the ring gear and the second ring gear, the third clutch means is arranged to be able to connect the input shaft to the third sun gear, and the first brake means restrains the first ring gear and the second ring gear to the housing case. The second brake means is arranged so as to be able to restrain the second sun gear and the third carrier with respect to the housing case, and the third brake means is arranged so that the third sun gear can be restrained with respect to the housing 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 1] Figure 1 shows the 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.

Outside the first intermediate shaft 16, in order from the side closest to the input shaft 12, there is a second intermediate shaft 118, a third intermediate shaft 20, and a fourth intermediate shaft 2.
1 are disposed coaxially with the first intermediate shaft 16, and are each rotatably supported with respect to the transmission case 10 independently of the first intermediate shaft 16.

Further, an output shaft 14 serving as an output end is disposed coaxially with the fourth intermediate shaft 21 on the outside of the fourth intermediate shaft 21.
1 and is rotatably supported on the transmission case 10.

An output gear 15 is fixed to the output shaft 14.

The first planetary gear set 22 includes a first sun gear 24 that is concentrically fixed to the second intermediate shaft 18, and a first sun gear 24 that is concentrically fixed to the second intermediate shaft 18.
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 third intermediate shaft 20, and a second sun gear 34 fixed to the third intermediate shaft 20.
4, a plurality of third pinions 37 that mesh with the second pinion 36, a second ring gear 38 that meshes with the third pinion 37, and a second pinion 36 and a third pinion 37. The second rotatably supports the
This is a double pinion simple planetary gear center equipped with a carrier 40. The second ring gear 38 and the second carrier 40 are rotatably arranged with respect to the transmission case 10.

The third planetary gear set 42 includes a third sun gear 44 concentrically fixed to the first intermediate shaft 16, and a third sun gear 44 fixed to the first intermediate shaft 16.
a plurality of fourth pinions 46 meshing with the fourth pinion 4; a third ring gear 50 meshing with the fourth pinion 46;
This is a simple planetary gear set including a third carrier 52 that rotatably supports the gear 6. 3rd ring gear 5
0 and third carrier 52 are transmission case 1
It is arranged rotatably with respect to 0.

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

Further, the third carrier 52 is connected to the third intermediate shaft 20 so as to rotate together with the second sun gear 34.

The first clutch means 54 is arranged to connect the input shaft 12 and the second intermediate shaft 18. The second clutch means 56 is arranged to connect the input shaft 12 and the first ring gear 28. The third clutch means 58 is arranged to connect the input shaft 12 and the first intermediate shaft 16. 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 against the transmission case 10 in a non-rotatable manner. The second brake means 62 is arranged so as to be able to restrain the second sun gear 34 and the third carrier 52 from rotating relative to the transmission case 10 via the third intermediate shaft 20 and the fourth intermediate shaft 21 . The third brake means 64 is arranged so as to be able to restrain the third sun gear 44 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 0.400, the second planetary gear set 32 has a gear ratio ρ2 of 0.542, and the third planetary gear set 42 has a gear ratio ρ3 of 0.400. It is 471.

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. Thereby, the input shaft 12 and the second intermediate shaft 18 are connected, and the rotation of the first ring gear 28 is restrained.

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.

At this time, in the first planetary gear set 22, the first sun gear 24 connected to the second intermediate shaft 18 rotates together with the input shaft 12, the first carrier 30 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, and the second carrier 40 rotates in the opposite direction to the input shaft 12.
rotates together with the first sun gear 24 and the input shaft 12, and the second ring gear 38 rotates together with the first carrier 30 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 opposite direction to the input shaft 12, the third carrier 52 rotates together with the second sun gear 34 in the opposite direction to the input shaft 12, and the third The ring gear 50 rotates together with the first carrier 30 and the second ring gear 38 in the same direction as the input shaft 12.

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, the rotation of the second sun gear 34 and 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 second carrier 40 via the second intermediate shaft 18, and from the second carrier 40 to the second carrier 40 via the second pinion 36 and the third pinion 37.
The signal is transmitted to the 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 connected to the second intermediate shaft 18 rotates together with the input shaft 12, the first carrier 30 rotates in the same direction as the input shaft 12, and the first A 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, and the second carrier 40
rotates together with the first sun gear 24 and the input shaft 12, and the second ring gear 38 rotates together with the first carrier 30 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 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 the second ring gear 38. Thus, it is rotating in the same direction as the input shaft 12.

In this second speed, the first planetary gear set 22 and the third planetary gear set 42 are not involved in the speed change ratio, and the second planetary gear set 32 adjusts the gear ratio to 1/(1-ρ2).
) is obtained, and in this example, a numerical value of 2.183 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 second intermediate shaft 18 remain connected, and the rotation of the third sun gear 44 is newly restricted.

The power input from the input shaft 12 is transmitted to the second carrier 40 via the second intermediate shaft 18, and from the second carrier 40 to the second carrier 40 via the second pinion 36 and the third pinion 37.
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 ring gear 38 is
The signal is transmitted to the third ring gear 50, from the third ring gear 50 via the fourth pinion 46 to the third carrier 52, and from the third carrier 52 via the third intermediate shaft 20 to the second
The signal is transmitted to the sun gear 34 and circulates through a path from the second sun gear 34 to the second ring gear 38 via the second pinion 36 and the third pinion 37.

At this time, in the first planetary gear set 22, the first sun gear 24 connected to the second intermediate shaft 18 rotates together with the input shafts', 2, and the first carrier 30 rotates in the same direction as the input shaft 12. 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 same direction as the input shaft 12,
The second carrier 40 is connected to the input shaft 1 together with the first sun gear 24.
The second ring gear 38 rotates together with the first carrier 30 in the same direction as the input shaft 12 . Further, in the third planetary gear set 42, the third sun gear 44 stops rotating, and the third carrier 52 rotates together with the second sun gear 34 in the same direction as the input shaft 12,
The third ring gear 50 rotates together with the first carrier 30 and the second ring gear 38 in the same direction as the input shaft 12 .

In this third speed, the first planetary gear set 22 does not participate in the gear ratio, and the first planetary gear set 32, the second planetary gear set 32, and the third planetary gear set 42 change the gear ratio (1-ρ2).
A gear ratio of +ρ3)/(1-ρ2)(1+ρ3) 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 and the first ring gear 28 are newly connected, while the input shaft 12 and the second intermediate shaft 18 remain connected.

The 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 via the first pinion 2G to the first carrier 30. from the first carrier 30 to the output shaft 14. Also, from the input shaft 12, a second
The power manually applied via the clutch means 56 is transferred from the first ring gear 28 to the first carrier 3 via the first pinion 26.
0, and is transmitted 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, first carrier 30, and first ring gear 28 are all rotating together with the input shaft 12. Further, in the second planetary gear set 32, the second sun gear 34, second carrier 40, and second ring gear 38 all rotate together with the input shaft 12. Further, in the third planetary gear set 42, the third sun gear 44, the third carrier 52, and the third ring gear 50 all rotate 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 and the first ring gear 28 remain connected, and the rotation of the third sun gear 44 is newly restricted.

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 to the second ring gear 38, and from the second ring gear 38 to the second carrier 40 via the second pinion 36 and the third pinion 37. The signal is transmitted from the second carrier 40 to the first sun gear 24 via the second intermediate shaft 18, and from the first sun gear 24 via the first pinion 26 to the first carrier 3.
0. Further, a part of the power transmitted to the second ring gear 38 is transmitted to the third pinion 37 and the second pinion 3
6 to the second sun gear 34, from the second sun gear 34 to the third intermediate shaft 20 to the third carrier 52, and from the third carrier 52 to the third ring gear 50 via the fourth pinion 46. transmitted to the third ring gear 50
and is transmitted 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 same direction as the input shaft 12, the second carrier 40 rotates together with the first sun gear 24 in the same direction as the input shaft 12, and the second A ring gear 38 rotates together with the first carrier 30 in the same direction as the input shaft 12. Further, in the third planetary gear set 42, the third sun gear 44 stops rotating, the third carrier 52 rotates together with the second sun gear 34 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 carrier 30 and the second ring gear 38 in the same direction as the input shaft 12 .

In this fifth 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 ((1-ρ
2+ρ3)-ρ2ρ3(1+ρ1))/(1-ρ2)(
1+ρ3), which is 0.848 in this example.
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 and the first ring gear 28 remain connected, and the second sun gear 34 and the third carrier 5 are newly connected.
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 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 to the second ring gear 38, and from the second ring gear 38 to the second carrier 40 via the second pinion 36 and the third pinion 37. The signal is transmitted from the second carrier 40 to the first sun gear 24 via the second intermediate shaft 18, and from the first sun gear 24 via the first pinion 26 to the first carrier 3.
0.

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 sun gear 24 in the same direction as the input shaft 12, and the second ring gear 34 stops rotating.
8 rotates together with the first carrier 30 in the same direction as the input shaft 12. Also, the third planetary gear set 4
2, the third sun gear 44 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 the second ring gear 38 to rotate the input shaft 12. is rotating in the same direction.

In this sixth 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 change the gear ratio (1-ρ2-ρ
A gear ratio of 1ρ2)/(1−ρ2) is obtained, and in this example, a numerical value of 0.526 is obtained.

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 sun gear 34 and the third carrier 52 is restrained.

The power input from the input shaft 12 is transmitted to the third sun gear 44 via the first intermediate shaft 16, and from the third sun gear 44 via the fourth pinion 46 to the third ring gear 50. and is transmitted 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 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 stops rotating, the second carrier 40 rotates together with the first sun gear 24 in the opposite direction to the input shaft 12, and the second ring gear 38 rotates in the opposite direction to the first sun gear 24. It rotates together with the carrier 30 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 same direction as the input shaft 12, the third carrier 52 stops rotating, and the third ring gear 50 is integrated with the first carrier 30 and the second ring gear 38. Thus, it is rotating in the opposite direction to the input shaft 12.

In this retraction, the first planetary gear set 22 and the second
The planetary gear set 32 is not involved in the gear ratio and is
The planetary gear set 42 provides a gear ratio of -1/ρ3, 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 activated. This allows the input shaft 12 and the first
The intermediate shaft 16 is connected, and the first ring gear 28
is restricted from rotation.

The power input from the input shaft 12 is transmitted to the third sun gear 44 via the first intermediate shaft 16.
The signal is transmitted from the fourth pinion 46 to the third ring gear 50, and from the third ring gear 50 to the output shaft 14. Further, a part of the power transmitted to the third sun gear 44 is transmitted to the third carrier 52 via the fourth pinion 46, and from the third carrier 52 to the second intermediate shaft 20 via the third intermediate shaft 20.
It is transmitted to the sun gear 34 , from the second sun gear 34 to the second carrier 40 via the second pinion 36 and the third pinion 37 , and from the second carrier 40 to the second intermediate shaft 18
is transmitted to the first sun gear 24 via the first sun gear 24.
4 to the first carrier 30 via the first pinion 26, and from the first carrier 30 to the output shaft 14. In addition, a part of the power transmitted to the first carrier 30 is
The signal is transmitted to the second ring gear 38 from the second ring gear 38 via the second pinion 36 and the third pinion 37.
The signal is transmitted to the carrier 40.

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 in the same direction as the input shaft 12, the second carrier 40 rotates together with the first sun gear 24 in the opposite direction to the input shaft 12, and the second A ring gear 38 rotates together with the first carrier 30 in the opposite direction to the input shaft 12. Further, in the third planetary gear set 42, the third sun gear 44 rotates together with the input shaft 12, the third carrier 52 rotates together with the second sun gear 34 in the same direction as the input shaft 12, and the third ring gear 50 rotates integrally with the first carrier 30 and the second ring gear 38 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-ρ
A gear ratio of 2+ρ3)-ρ2ρ3(1+ρ1)/ρ1ρ2ρ3 is obtained, and in this example, a value of -5,598 is obtained.

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 can be connected in series to 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 second intermediate shaft 18. .

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 second intermediate shaft 18 to the input shaft 12, so the engine brake is released, improving fuel efficiency and quietness. It has the advantage of improving performance.

In addition, when shifting between 1st to 4th speeds and 5th or 6th speed, the second intermediate shaft 1
8 rotates faster than the input shaft 12, and in the first to fourth speeds, the second intermediate shaft 18 has a speed equal to or less than the same as the input shaft 12. Therefore, when shifting up, the one-way clutch 68 The first clutch means 54 automatically enters the disengaged state due to the effect of Shift shock can be suppressed without having to precisely set the timing of activation or deactivation, and the speed change 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, fuel efficiency and quietness are improved in the first speed and in reverse (2) when the first brake means 60 is activated, 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 FIGS. 9, 10, and 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 first intermediate shaft 16 is arranged axially apart from the second intermediate shaft 18 and the third intermediate shaft 20, and the input shaft 12 is passed inside these intermediate shafts 16.18.2o. ,
Along with this, the arrangement position of the third clutch means 58 has been changed. 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 1, in order from the side closest to the input shaft 12, there is a second intermediate shaft 18, a third intermediate shaft 20, and a fourth intermediate shaft 2.
1 are disposed coaxially with the first intermediate shaft 16, and are each rotatably supported with respect to the transmission case 10 independently of the first intermediate shaft 16.

Further, an output shaft 14 serving as an output end is disposed coaxially with the fourth intermediate shaft 21 on the outside of the fourth intermediate shaft 21.
1 and is rotatably supported on the transmission case 10.

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 third intermediate shaft 20, 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 first intermediate shaft 16, and is constructed from the same combination as the first embodiment.

Here, the first carrier 30, the second carrier 408 and the third carrier
The ring gear 50 and the output shaft 14 are connected to rotate together. Further, the first ring gear 28 and the second ring gear 38 are connected to rotate together. Further, the third carrier 52 is connected to the third intermediate shaft 20 so as to rotate together with the second sun gear 34.

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 second ring gear 38.
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 second ring gear 38 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 sun gear 34 and the third carrier 52 non-rotatably with respect to the transmission case 10 via the third intermediate shaft 20 and the fourth intermediate shaft 21. The third brake means 64 is the first intermediate shaft 1
6, the third sun gear 44 is disposed so as to be non-rotatably restrained relative to the transmission case 10. 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 0.474, and the third planetary gear set 42 has a gear ratio ρ3 of 0.400. It is 471.

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.

13 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 second ring gear 38 is restrained.

The power input from the input shaft 12 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 to the output shaft 14 . communicated.

At this time, in the first planetary gear set 22, the first sun gear 24 connected to the second intermediate shaft 18 rotates together with the input shaft 12, the second carrier 40 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, and the second carrier 40 rotates in the opposite direction to the input shaft 12.
rotates together with the first carrier 30 in the same direction as the input shaft 12, and the second ring gear 38 stops rotating.

Further, in the third planetary gear set 42, the third sun gear 44 rotates in the opposite direction to the input shaft 12, and the third carrier 5
2 rotates in the opposite direction to the input shaft 12 together with the second sun gear 34, and the third ring gear 50 rotates in the same direction as the input shaft 12 together with the first carrier 30 and the second carrier 40. There is.

In this first speed, the second planetary gear set 22 and the third planetary gear set 42 are not involved in the gear ratio, and the first planetary gear set 22 provides the speed ratio of (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, the rotation of the second sun gear 34 and 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 , 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. In addition, the first carrier 30
A part of the power transmitted to the second carrier 40 is transferred from the second carrier 40 to the third carrier 40.
It is transmitted to the second ring gear 38 and the first ring gear 28 via the pinion 37, and from the first ring gear 28 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 connected to the second intermediate shaft 18 rotates together with the input shaft 12, the first carrier 30 rotates in the same direction as the input shaft 12, and the first A 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, and the second carrier 40
rotates in the same direction as the input shaft 12 together with the first carrier 30, and the second ring gear 38 rotates in the same direction as the input shaft 12 together with the first ring gear 28. Further, in the third planetary gear set 42, the third sun gear 4
4 rotates in the opposite direction to the input shaft 12, the third carrier 52 stops rotating, and the third ring gear 50 rotates in the opposite direction to the input shaft 12.
and rotates in the same direction as the input shaft 12 together with the second carrier 40 .

In this second speed, the third planetary gear set 42 is not involved in the gear ratio, and the first planetary gear set 22 and the second planetary gear set 32 provide (ρ1+ρ2).
A gear ratio of /ρ1 is obtained, and in this example, a numerical value of 2.185 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 second intermediate shaft 18 remain connected, and the rotation of the third sun gear 44 is newly restricted.

The power input from the input shaft 12 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 to the output shaft 14 . communicated. In addition, the first carrier 30
A portion of the power transmitted to the is transmitted to the second ring gear 38 via the pinion 37, and from the second ring gear 38 to the first
transmitted to the ring gear 28, transmitted from the first ring gear 28 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 from the second carrier 40 to the second ring gear 38 and the first ring gear 28 via the second pinion 36 and the third pinion 37, and from the first ring gear 28 to the first ring gear 28. The signal is transmitted 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 connected to the second intermediate shaft 18 rotates together with the input shaft 12, the second carrier 40 rotates in the same direction as the input shaft 12, and the first A 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 rotates in the same direction as 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 rotates together with the first ring gear 28 in the same direction as the input shaft 12. Furthermore, in the third planetary gear set 42,
The third sun gear 44 stops rotating, the third carrier 52 rotates together with the second sun gear 34 in the same direction as the input shaft 12, and the third ring gear 50 works together with the first carrier 30 and the second carrier 40. Thus, it is rotating 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, (ρ1+ρ
A gear ratio of 3 (ρ1+ρ2))/ρ1(1+03) 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 and the second intermediate shaft 18 remain connected, and the input shaft 12 is newly connected to the first ring gear 28 and the second intermediate shaft 18.
A ring gear 38 is connected.

The power manually applied 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 second clutch means 56
The power input via the first ring gear 28 is transferred from the first ring gear 28 to the first
The signal is transmitted to the first carrier 30 via the pinion 26 and then to the output shaft 14 .

At this time, in the first planetary gear set 22, the first sun gear 24, first carrier 30, and first ring gear 28 are all rotating together with the input shaft 12. Further, in the second planetary gear set 32, the second sun gear 34, second carrier 40, and second ring gear 38 all rotate together with the input shaft 12. Further, in the third planetary gear set 42, the third sun gear 44, the third carrier 52, and the third U-shaped gear 50 all rotate 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 hand 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 rotation of the third sun gear 44 is newly restrained while the input shaft 12, the first ring gear 28, and the second ring gear 38 remain connected.

The power input from the input shaft 12 is transferred to the second ring gear 38.
from the second ring gear 38 to the second pinion 36
and is transmitted to the second carrier 40 via the third pinion 37, and from the second carrier 40 to the output shaft 14.

Further, a part of the power transmitted to the second ring gear 38 is
It is transmitted to the second sun gear 34 via the third pinion 37 and the second pinion 36, and is transmitted from the second sun gear 34 to the third carrier 52 via the third intermediate shaft 20, and from the third carrier 52 to the fourth pinion 46. The signal is transmitted to the third ring gear 50 via the third ring gear 50, and is transmitted from the third ring gear 50 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 same direction as 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 ring gear 28 and the input shaft 12. Further, in the third planetary gear set 42, the third sun gear 44 stops rotating, the third carrier 52 rotates together with the second sun gear 34 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 carrier 30 and the second carrier 40 in the same direction as the input shaft 12 .

In this fifth speed, the first planetary gear set 22 does not take part in the gear ratio, and the second planetary gear set 32 and the third planetary gear set 42 shift the gear ratio to (1+ρ3−ρ
A gear ratio of 2ρ3)/(1+ρ3) is obtained, and in this example, a numerical value of 0.848 is 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 second
While the ring gear 38 remains connected, the rotation of the second sun gear 34 and the third carrier 52 is newly restricted.

The power input from the input shaft 12 is transferred to the second ring gear 38.
The signal is transmitted from the second carrier 40 to the second carrier 40 via the second pinion 36 and the third pinion 37, 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 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 together with the first ring gear 28 and 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, the third carrier 52 stops rotating, and the third ring gear 50 is integrated with the first carrier 30 and the second carrier 40. Thus, it is rotating in the same direction as the input shaft 12.

In the sixth 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. A numerical value of .526 was obtained.

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 sun gear 34 and the third carrier 52 is restrained.

The power input from the input shaft 12 is transmitted to the third sun gear 44 via the first intermediate shaft 16, and from the third sun gear 44 via the fourth pinion 46 to the third ring gear 50. and is transmitted 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 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 stops rotating, 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 in the direction opposite to the input shaft 12. It rotates in the opposite direction to the input shaft 12 together with the ring gear 28 . Further, in the third planetary gear set 42, the third sun gear 44 rotates integrally with the input shaft 12, the third carrier 52 stops rotating, and the third ring gear 50 rotates integrally with the first carrier 30 and the second carrier 40. Thus, it is rotating in the opposite direction to the input shaft 12.

In this retraction, the first planetary gear set 22 and the second
The planetary gear set 32 is not involved in the gear ratio and is
The planetary gear set 42 provides a gear ratio of -1/.rho.3, and in this embodiment, a numerical value of 2.123 is obtained.

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 activated. This allows the input shaft 12 and the first
The intermediate shaft 16 is connected, and the first ring gear 28
And the rotation of the second ring gear 38 is restricted.

The power input from the input shaft 12 is transmitted to the third sun gear 44 via the first intermediate shaft 16, and from the third sun gear 44 via the fourth pinion 46 to the third ring gear 50. and is transmitted to the output shaft 14. In addition, a part of the power transmitted to the third sun gear 44 is
It is transmitted to the third carrier 52 via the fourth pinion 46, and from the third carrier 52 to the second sun gear 34 via the third intermediate shaft 20, and from the second sun gear 34 to the second pinion 36 and the third pinion 37. via the second carrier 4
0, and is transmitted 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 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 in the same direction as 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 has stopped rotating. Further, in the third planetary gear set 42, the third sun gear 44 rotates together with the input shaft 12, the third carrier 52 rotates together with the second sun gear 34 in the same direction as the input shaft 12, and the third ring gear 50 rotates in the opposite direction to the input shaft 12 together with the first carrier 30 and the second carrier 40.

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+ρ3-ρ
2ρ3)/ρ2ρ3 is obtained, and in this example -
A numerical value of 5,589 was obtained.

The gear transmission of the fourth embodiment configured and operated as described above can solve the desired problem, and also has good efficiency and low fuel consumption because power circulation does not occur between the 4th and 6th speeds. It has the advantage of improving. In addition, each pinion 26
．． Since the relative rotational speed of carriers 36, 37, and 46 with respect to each carrier 30, 40, and 52 is reduced, durability is improved. Furthermore, as shown in FIGS. 16 and 17, which will be described later,
Since the first planetary gear set 22 and the second planetary gear set 32 can be combined, the structure can also be simplified.

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 hand 62, and third brake means 64 have the same construction as in the second embodiment. Further, as described above, the first planetary gear set 22 and the second planetary gear set 32 are combined to simplify the structure.

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. In this embodiment, the first intermediate shaft 16 is arranged axially apart from the second intermediate shaft 18 and the third intermediate shaft 20, and the input shaft 12 is passed inside these intermediate shafts 16, 18, 20. 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
Forward movement by combining one set of simple planetary gear set and one set of double pinion simple planetary gear set
When establishing gears higher than 1.5, the gear ratios in normal forward gears except for overdrive are arranged in an arrangement close to a geometric series, and the gear ratio of overdrive can ensure power performance, and the gears of each planetary gear set are The ratio is appropriate, the outer diameter of the gear train can be made small, and the gear can be shifted to the next gear by controlling the two engagement elements.

[Brief explanation of drawings]

Fig. 1 is a skeleton diagram showing a first embodiment of the gear transmission according to the present invention, Fig. 2 is a table showing the operating status of the engagement means in the first embodiment, and Figs. 12 is a skeleton diagram showing a second embodiment, FIG. 13 is a skeleton diagram showing a third embodiment, and FIG. 14 is a skeleton diagram showing a fourth embodiment of the present invention. , 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...first pinion, 28...first ring gear, 30...first carrier, 32...second planetary gear set, 34...second
Sun gear, 36...Second pinion, 37...Third pinion, 38...Second ring gear, 40...Second carrier, 42...Third planetary gear set, 44...Third
Sun gear, 46... 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.

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 that is a simple planetary gear set that is a combination of a carrier and a first ring gear that is coaxially disposed on the first sun gear and rotatably disposed relative to the housing case and meshes with the first pinion;
A second sun gear that is rotatably supported with respect to the storage case, a second pinion that meshes with the second sun gear, and a third pinion that meshes with the second pinion are rotatably supported and rotatably arranged with respect to the storage case. the second carrier and the second
A second pinion disposed coaxially with the sun gear and rotatably disposed with respect to the housing case and meshing with the third pinion.
a second planetary gear set consisting of a double pinion simple planetary gear set in combination with a ring gear;
The third planetary gear set includes a simple planetary gear set having the same combination as the first planetary gear set, first to third clutch means, and first to third brake means, and includes a first sun gear and a second carrier. are connected, the first carrier, the second ring gear, the third ring gear and the output shaft are connected, the second sun gear and the third carrier are connected, and the first clutch means connects the input shaft to the first sun gear and the second The second clutch means is arranged so as to be able to connect the input shaft to the first ring gear, the third clutch means is arranged so as to be able to connect the input shaft to the third sun gear, and the first brake means is arranged so as to be able to connect the input shaft to the third sun gear. The first ring gear is arranged so as to be able to be restrained relative to the housing case, the second brake means is arranged so that the second sun gear and the third carrier can be restrained relative to the housing case, and the third brake means is arranged such that the third sun gear and the third carrier can be restrained relative to the housing case. A gear transmission device characterized in that the gear transmission device is arranged so as to be able to be restrained. (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 sun gear that is rotatably supported with respect to the storage case, a second pinion that meshes with the second sun gear, and a third pinion that meshes with the second pinion are rotatably supported and rotatably arranged with respect to the storage case. the second carrier and the second
A second pinion disposed coaxially with the sun gear and rotatably disposed with respect to the housing case and meshing with the third pinion.
a second planetary gear set consisting of a double pinion simple planetary gear set in combination with a ring gear;
A third planetary gear set consisting of a simple planetary gear set having the same combination as the first planetary gear set, first to third clutch means, and first to third brake means, and a first carrier and a second carrier. and third
The ring gear and the output shaft are connected, the first ring gear and the second ring gear are connected, the second sun gear and the third carrier are connected, and the first clutch means is arranged to connect the input shaft to the first sun gear. , the second clutch means is arranged to connect the input shaft to the first ring gear and the second ring gear, the third clutch means is arranged to connect the input shaft to the third sun gear, and the first brake means connects the input shaft to the first ring gear. and the second ring gear are arranged so as to be able to be restrained with respect to the accommodation case, the second brake means are arranged so that the second sun gear and the third carrier can be restrained with respect to the accommodation case, and the third brake means is arranged so that the second sun gear and the third carrier can be restrained with respect to the accommodation case, and the third brake means is arranged so that the second sun gear and the third carrier can be restrained with respect to the accommodation case. A gear transmission device characterized in that it is arranged so as to be able to be restrained with respect to a case.