JPS5926645A - Automatic transmission - Google Patents

Abstract

PURPOSE:To simplify the structure of an FF car having a laterally arranged engine, to secure the height of the car from the ground easily and to shorten the length of the car in the axial direction by a method wherein a forward one-stage and backward four-stage gear train is provided on a set of shafts arranged in series with the output shaft of a torque converter. CONSTITUTION:A first planetary gear set 30 and a second planetary gear set 40 are arranged at the back of a shaft serving as the output shaft of the torque converter and the input shaft 1 of the transmission at the same time so that a forward one stage and backward four stage speed change gear device is constituted. Further, an overdrive device is constituted of a third planetary gear set 60 whereby a power of forward one-stage and backward four-stage is taken out from an output gear 61 by controlling clutches C1 and C2, brakes B1 and B2, a clutch C0 and a brake B0.

Description

[Detailed description of the invention] The present invention relates to an automatic multi-stage automatic transmission.

In recent years, 4-speed automatic transmissions have been commercialized to reduce fuel consumption, and there is also a trend towards automobiles with a 1-engine, 1-in, 1-drive type (hereinafter referred to as the F1 set) with the aim of reducing fuel consumption. It is also remarkable.Especially when the engine is sleeping sideways.
In today's small cars, it is difficult to install the conventional 1- to 4-speed automatic transmissions for front-engine, rear-drive cars due to width constraints. In order to ensure ground clearance, there are also major restrictions on the dimension from the engine crankshaft to the bottom of the transmission.

The automatic transmission of the present invention includes a fluid type 1 to lux converter and a 1 to 1 lux converter.
- In an automatic transmission having a transmission and a hydraulic control device, the transmission includes: 1) an intermediate shaft which is a lux converter output shaft, and 1) which is arranged in series behind the input shaft of the transmission and which rotates on the outside thereof; The outer side of the cylindrical first linker shaft that can be freely fitted to the outside (this includes the sun gear 83 disposed on the front wheel, the planetary carrier P3,
Third planetary gear set that moves ring gear R3 to the right, sun gear S2 located at the rear, planetary carrier P2,
a second planetary gear having a ring gear R2;
A transmission with three forward speeds and one reverse speed consisting of clutches C1 and C2, brakes B1 and B3, and one-way clutch F2 is installed (J
A first planetary gear set including a sun gear S1, a planetary carrier P1, a ring gear R1, a clutch CO, a brake BO, and a one-way clutch are mounted on the outside of the 1-noon gear shaft rotatably fitted to the rear of the intermediate shaft. F
An overdrive device consisting of an O is provided, and an output gear of the overdrive device is arranged between the transmission and the overdrive device to form a 1-heran transmission with 4 forward speeds and 1 reverse speed. - The output from the torque converter is inputted to the link gear R3 via the clutch C1, or inputted to the first gear shaft 13 which is directly connected to the first gears S2 and B3 via the clutch C2 and the brake B1, Carrier P3 directly connected to the intermediate shaft
and ring gear R2, and carrier P2 is connected to the case via one-way clutch F2 and/or brake B3, and each clutch J: and brake C1
, C2, B1, and B3 are selectively engaged or released by the operation of these hydraulic pressure levers, and the speed is changed to one of three forward speeds and one reverse speed, and the power output to the intermediate shaft is transmitted to the overdrive device. is input to Kitriya P1, and the carry ψP1
One end of the clutch CO is connected to the clutch CO.
The other end is connected to the sun gear S1 via the brake 80, and the power is output from the output gear directly connected to the ring gear R1. A gear train with 4 forward stages and 1 reverse stage is installed on the shaft, and the structure is simple and it is easy to secure ground clearance when installed, and the axial dimension can be greatly shortened.
The purpose of the present invention is to provide a four-speed forward automatic transmission suitable for a horizontally mounted front-wheel drive engine vehicle.

-〇- The automatic transmission of the present invention includes a fluid type 1 to lux converter and a 1 to 1 lux converter.
- Automatic transmission with transmission and hydraulic control system)
In the intermediate machine, the transmission consists of an intermediate shaft that is a torque converter output shaft and is arranged straight behind the human power shaft of the transmission, and a cylindrical first Zang gear that is rotatably fitted on the outside of the intermediate shaft. Outside of 1h11,
Sun gear S3 and planetary carrier 1 placed in front]
3. Third planetary gear set 1 that loads ring gear R3
~, a second planetary gearlet 1 having a sun gear S2, a planetary carrier P2, and a ring gear R2 arranged at the rear ~, clutches C1, C2, brakes Bi, B3, and a one-way clutch consisting of three forward speeds and a reverse gear 1. A first planetary gear set 1 including a sun gear S1, a planetary carrier P1, and a ring gear R1 is provided on the outside of the Zang gear shaft rotatably fitted to the rear of the intermediate shaft. An overdrive device Wl) consisting of a clutch CO1 brake B O1 one-way clutch FO is provided, and an output gear of the overdrive device is disposed between the transmission and the overdrive device to provide four forward speeds and one reverse speed.
The output from the silk converter is input to the ring gear R3 via the clutch C1 or to the first sun gear shaft directly connected to the ring gears 82 and B3 via the clutch C2 and the brake B1. The carrier P2 is connected to the case via the one-way latch F2 and/or the brake B3, and is output from the carrier P3 and ring gear R2, which are directly connected to the intermediate shaft. 1 Noki C1, C2,
B1 and B3 are selectively engaged or released by the operation of these hydraulic servos, and the power output to the intermediate shaft when the gears are changed to either three forward speeds or one reverse speed is input to the carrier P1 of the overdrive device. One end of the clutch CO is connected to the carrier P1, the other end of the clutch CO is connected to the first gear S1 via the brake BO, and power is output from the output gear directly connected to the ring gear R1. It is the composition.

Next, the present invention will be explained with reference to embodiments shown in the drawings.

First, a conventional automatic transmission system related to the present invention will be explained based on the schematic diagram of the transmission shown in FIG. 1 and the sectional view of the entire transmission shown in FIG. 1 Based on the schematic diagram of the Herans transmission of the present invention and the sectional view of the transmission in FIG. 4, improvements over the conventional examples shown in FIGS. 1 and 3 will be clearly explained. In the examples, equivalents are designated by the same reference numerals.

The automatic transmission 100 includes a hydraulic torque converter 200, a transmission 300, and a hydraulic control device (not shown in FIG. 3).

1 to 300 have a first planetary gear set 30, a second planetary gear set 1 to 40, and two multi-disc clutches C1 and C2 operated by hydraulic servos.
, 1 belt brake B1. 2 multi-disc brakes B2
, B3, one one-way latch F1, one one-way brake F2, a transmission 10 with nine forward speeds and three forward speeds and one reverse speed, a first planetary gear set 60, and a hydraulic servo. It is composed of an overdrive device 50 including one multi-disc clutch C0, one multi-disc brake B0, one one-way latch FO, and further includes a relay transmission 1IN1170 and a differential device 8.
0.

The automatic transmission housing 110 includes a torque converter 2
00, a main housing 120 integrally formed with chambers accommodating the transmission 10, the relay transmission shaft 70, and the differential 80, housing the overdrive device 50, and housing the rear of the automatic transmission. 4-knob housing 1 that covers the side
30, and a rear cover 140 that covers the rear side of the differential gear chamber.

The torque converter 200 is housed in a torque converter chamber 121 located at the front (engine side). Between the cylindrical transmission chamber 122 connected to the rear of the torque converter chamber 121 and the first torque converter chamber 121, there is an oil pump pump having an annular plate shape and having a cylindrical portion 152 on the inside, which houses an oil pump 150 therein. 10- The front cover 151 is firmly fastened to the main housing 120, and on the rear side of the front cover 1-cover 151,
A flon 1 is coaxial with the cylindrical portion 152 and protrudes rearward.
- An oil pump cover 154 having a center sabot 1-153 is fastened so that the front cover 153 and rear cover 154 form a partition wall 155 between both chambers. Also,
A center support wall 156 that projects forward is provided at the rear of the transmission chamber 122. The transmission chamber 122 is formed between the partition wall 155 and the intermediate support wall 15G, and the center support wall 156 is located at the rear of the transmission chamber 122.
An overdrive device chamber 123 is formed between the front center support 153 and the rear wall 141 of the sub-housing 130, and a cylindrical rear center support 142 that is coaxial with the front center support 153 is protruded forward from the rear wall 141 of the sub-housing 130. ing.

A fixed shaft 203 of a one-way clutch 202 that supports a stator 201 of a torque converter 200 is fitted inside the center sabots 1 to 153 of the front 1.
The input shaft 1 of the transmission, which is the output shaft of the torque converter, is rotatably supported inside the shaft 3. The input shaft 1 has a large diameter rear end portion 2 that protrudes rearward from the front 1 to center 4f bows 1 to 13, and has a rearward hole 3 formed in the center of the rear portion 2. .The input shaft 1
Behind the input Il! An intermediate shaft 4 arranged in series with 1l11 is rotatably mounted, and the intermediate shaft 4 has its tip slidingly in contact with the hole 3, and its rear end 7 center 4''-port 1-1.
42 through a bearing, in the middle part,
A cylindrical carrier shaft 5 connected to the carrier P1 of the first planetary gear lead 60 is fitted on the outside with a spline, and the V-shaft 5 is supported by the center support 15G of the intermediate support wall via a ball bearing. has been done. In addition, the intermediate shaft 4
A sun gear shaft 6 is rotatably fitted on the outside of the front winding side.

In the transmission chamber 122, first, at the front, a first hydraulic servo drum 7 that opens rearward is rotatably fitted onto the front 1 to center bones 1 to 153, and an annular screw 18 is inserted between the inner and outer circumferential walls of the first hydraulic servo drum 7. is fitted to form the hydraulic servo 9 of the clutch C2, and a return spring 10 is attached to the inner circumferential wall, and the clutch C2 is attached to the inner side of the outer circumferential wall. On the rear side of the first hydraulic servo drum 7, a second hydraulic servo drum 12 which is open to the rear and has an annular projection 11 at the front is arranged between the rear end portion 2 of the input shaft 1 and the annular piston 1.
3 is fitted to form the hydraulic servo 14 of the clutch C1, a return spring 15 is attached to the inner circumferential side, the clutch C1 is attached to the inner side of the outer circumferential wall, and the clutch C2 is attached to the outer circumference of the annular protrusion 11. C2
The first and second hydraulic servo drums 7.14 are connected via. On the rear side of the second hydraulic servo drum 14, a third
A planetary gear set 30 is provided, the ring gear R3 of which is connected to the second hydraulic servo drum via the clutch C1, the carrier P31 is spline-coupled to the tip of the intermediate shaft 4, and the sun gear S3 is integral with the sun gear shaft 6. It has become. In addition, the 1.2 hydraulic servo drum 7.14 and the 3rd planetary gear set 30@M have 13 motors in a small space.
- Bar J: A molded connecting drum 1116 is fixed to the outside of the first hydraulic servo drum 7 at its tip, and its rear end is connected to the sun gear shaft 6 on the return side of the third planetary gear set 1 to 30. A belt brake B1 is provided on the outer circumferential side.

In the surplus space IGA outside the connecting drum outside the third planetary gear sets 1 to 30, an annular third hydraulic +1-board drum 17 that opens rearward is fixed, and a piston 18 is fitted in it to control the hydraulic servo 19 of the brake 82. Form. A brake B2 is inserted into the spline groove 20 formed inside the main housing 120 on the rear side of the hydraulic servo 19 from the front.
, one-way brake "2's outer race 21, brake B
3, and the piston 22 is fitted into an annular hole between the outer peripheral side of the center support 156 of the intermediate support wall 157 on the rear side and the housing 120 to form the hydraulic servo 23 of the brake B3. The return spring 24 is supported by a flange plate attached to the tip of the center support 15G. A one-way latch [21] is provided on the inner side 14- of the brake B2, and the outer race 25 is attached to the inner race of the lean gear shaft 6.
2 are connected to each other, and second gear sets 1 to 40 are mounted on the rear side of the -branch J-direction clutch F1. In the second planetary gear set 40, the sun gear S2 is formed integrally with the sun gear shaft 6, the carrier P2 is connected to the inner race of the outer one-sided brake F2 and the brake B3, and the ring gear R2 is connected to the intermediate shaft. It is connected to 4.

In the overdrive device chamber 123, the intermediate support wall 157
An output gear port 1 of an overdrive device is rotatably fitted to the outside of the carrier shaft 5 on the rear side via a tapered roller bearing. Further, on the rear side, a sun gear shaft 62 is rotatably fitted to the rear of the intermediate shaft 4, and is connected to the first platelet gear set 1 60 on the inside, and the brake BO and its hydraulic servo 63 and return spring 64 on the outside. A one-way latch Fo is provided on the side, and a fourth hydraulic servo drum 65 that opens forward is rotatably fitted on the rear center support.

An annular screw 1 is installed between the inner and outer circumferential walls of the fourth hydraulic servo drum 65.
~n 6G is fitted to form clutch CO oil pressure 1)--bolt 7, and return spring 6 is inserted on the inner circumferential side.
8. A clutch CO is fitted inside the outer peripheral wall, and the fourth hydraulic servo drum 65 is integrally connected to the Zangia S1 and connected to the carrier P1 via the clutch C-0.
Further, it is connected to the housing 130 via the brake BO. The carrier P1 and the Zang gear S1 are connected via a one-way latch FO, and the ring gear R1 is connected to the output gear port 1 of the overdrive device.

A cylindrical relay transmission shaft chamber 124 is provided on the side of the transmission chamber 122 and the overdrive device chamber 123, and a relay transmission shaft 70 arranged parallel to the intermediate shaft 4 has a pair of tapered roller bearings. 71 and 72, an input gear 73 that meshes with the output gear port 1 of the overdrive device is provided at the rear of the relay transmission shaft 70, and an output gear 74 is provided at the tip.

The differential equipment room 25 is located on the side of the torque converter room 121.
A large input gear 83 is provided at the rear end of the differential gear 80, supported by tapered roller bearings 81 and 82, and meshes with the output gear 74.

The transmission 300 engages or disengages each clutch and brake using hydraulic pressure selectively output from a hydraulic control device (not shown) to a hydraulic servo of each frictional engagement device according to vehicle running conditions such as vehicle speed and throttle angle. , so that four forward speeds or one reverse speed change is performed. The gear position achieved by the operation of each clamp, brake, one-way clutch, and one-way brake (
Examples of RANGE) are shown in Table 1.

=17- Table 1 In Table 1, ◯ indicates an engaged or locked state, and × indicates a released or overrun state.

The gears are changed as shown in Table 1 above, and the overdrive device @5
The rotation output from the output gear port 1 of 0 is transmitted to the actuating device @ 80 via the relay 18 and the transmission shaft 70, and is output from the known differential gear 84.

Firstly, the present invention will be explained based on the embodiment shown in Fig. 2.4 while clearly indicating improvements over the conventional example.

Variable 3m device 10 that constitutes the transmission 300Δ
Of the overdrive devices 50A, the transmission 10Δ
has an improvement over the conventional transmission @10 in terms of two-wheel and four-wheel configuration, and an overdrive device! i0A has almost the same configuration. In transmission 10△, transmission 1
0, from the front, clutch C2 and J: and its hydraulic servo 9, clutch C1 and its hydraulic servo 14 on the rear side, and third gear sets 1 to 3 on the rear side.
30, a connecting drum 16 covering them, and a bell 1 to a brake B1 are arranged.

First, the first structural improvement is that the one-way lug F1 and the brake B2, which were arranged on the rear side of the third planetary gear set 1 to 30, and the annular surplus space 16A on the rear outer periphery of the connecting drum 1G. The hydraulic servo 19 that had been installed was omitted, and 1
~Lance transmission 300△ was shortened in the axial direction. Further, as an improvement of the second configuration 1, the surplus space 16Δ
The return spring 24A of the hydraulic servo 23 that operates the brake B3 is attached to the center bow 1~1! i
6A is shortened in the axial direction compared to the center bows 1 to 156 to which the return spring 24 of the conventional example is attached.
A has been shortened in the axial direction.

In addition, a second planetary gearlet 40 is installed on the rear side of the third planetary gear set 1-30, and a spline 20 on the outside thereof has a one-sided brake [2 and a brake B3, and an intermediate support wall]. At 157, a hydraulic servo 23 of the brake B3 is installed. The return spring 24
Δ is engaged with the screw 1 hem 22A by an arm 24B that overhangs the one-sided clutch F2 and brake B3.

1 to 300△ of this embodiment are hydraulic pressures that are selectively output from a hydraulic control device (not shown) to the hydraulic servo of each friction engagement device according to vehicle running conditions such as vehicle speed and thrower distance. Then, each clutch 4-3 and brake are engaged or released, and a four-speed forward speed change or a one-speed reverse speed change is performed. each clutch,
An example of the operation of the brake, one-way clutch and one-way brake and the achieved gear (RANGF) is shown in Table 2.

21-Table 2 In Table 2, ◯ indicates an engaged or locked state, and × indicates a released or overrun state.

As described above, the automatic transmission of the present invention is an automatic transmission having a hydraulic h-lux converter, a transmission, and a hydraulic control device.
On the outside of the cylindrical 14th gear shaft, which is rotatably fitted outside the intermediate shaft which is the output shaft of the torque converter and is arranged in series behind the input shaft of the transmission, 1 non-gear S3 and planetariki A placed in front
・A third planetary gear set having a rear P3 and a ring gear R3, a second planetary gear set 1~ having a sun gear S2 disposed at the rear, a planetary carrier P2, and a ring gear R2, clutches C1, 02, brakes B1, F
33. A transmission with three forward speeds and one reverse speed consisting of a one-way clutch F2 is installed, and a ring gear S1, a planetary carrier P1, and a ring are installed on the outside of the sun gear shaft rotatably fitted to the rear of the intermediate shaft An overdrive device consisting of a first planetary gear set L having a gear R1, a clutch CO, a brake BO1 and a one-way clutch O is provided, and an A-patrive device is installed between the overdrive device and the speed change IHfJ'J. A transmission with 4 forward speeds and 1 reverse speed is configured by arranging the output gears, and the output from the 1 to 100 lux converter is either manually applied to the ring gear/''R3 via clutch C1 or via clutch C2 and brake B1. The 14th station directly connected to Sungear S2 and B3.
Carry VP input to the bungear shaft and directly connected to the intermediate shaft
3 and ring gear R2, and carrier P2.
is connected to the case via one-way clutch F2 and/or brake B3, and each clutch and brake C1
, C2, B1, and B3 are J for the operation of these hydraulic servos.
The power output to the intermediate shaft after being selectively engaged or disengaged and shifted to one of three forward speeds and one reverse speed is input to the carrier P1 of the overdrive device, and the carrier P1 has a clutch GO. One end of the clutch CO is connected, the other end of the clutch CO is connected to the sun gear S1 via the brake B○, and the power is output from the output gear directly connected to the ring gear R1. One gear lane with four forward speeds and one reverse speed is installed on a set of rotary shafts arranged in series with the output shaft, making it simple in structure and easy to secure ground clearance when mounted on a vehicle. A one-way clutch F2 that can shorten the axial dimension and lock the carrier P2 in one direction on the front side of the outer part of the second planetary gear set;
A brake B3 that engages or releases the carrier P2 from the case is arranged on the rear side, and the hydraulic servo of the brake B3 is
Its piston and cylinder are installed on the rear side of brake B3, and its return spring is installed in the surplus space outside the third planetary gear set on the front side of the one-way clutch, and connects brake B3 and one-way latch F2. Due to the structure in which the overhanging arm is engaged with the screw 1, the axial dimension can be further shortened, and it can be suitably used in a horizontal front-wheel drive vehicle with an engine.

25-

[Brief explanation of drawings]

Figure ff11 shows conventional automatic transmissions 1 to 1 related to the present invention.
2 is a skeletal diagram of a transmission of an automatic transmission according to the present invention, FIG. 3 is a sectional view of a conventional automatic transmission, and FIG. 4 is a sectional view of an automatic transmission according to the present invention. FIG. 2 is a sectional view of main parts of the transmission. In the figure 1...Input shaft 4...Intermediate shaft 5...Carry V axis 6...Sun gear shaft 10A...Transmission device 16
...Connected drum 16A...Excess space 23...
Hydraulic servo for brake B3 24A...Return spring 24B...Arm 30...Third planetary gear set 40...Second planetary gear set 50A
...Overdrive device C1, C2, C3...Clutch BO, B1.82...Brake FO...
One-way clutch F2... One-way brake 26-

Claims (1)

[Scope of Claims] 1) In an automatic transmission having a hydraulic 1 to lux converter, a transmission, and a hydraulic control device, the transmission is a torque converter output shaft and is arranged in series behind the input shaft of the transmission. On the outside of the intermediate shaft and the cylindrical first sun gear shaft that is rotatably fitted on the outside of the intermediate shaft, there are third planetary gear sets 1 to 1 having a sun gear S3, a planetary carrier P3, and a ring gear R3 disposed at the front. A transmission with three forward speeds and one reverse speed, consisting of a second planetary gear set I~ having a sun gear S2, a planetary carrier P2, and a ring gear R2 arranged at the rear, clutches C1, C2, brakes B1, B3, and a one-way clutch F2. A sun gear S is provided on the outside of the 1-noon gear shaft rotatably fitted on the rear part of the intermediate shaft.
1. Planetary carrier P1, first planetary gear set having ring gear R1, clutch Co1 brake B
O, an overdrive device consisting of a one-way clutch "0" is provided, and an output gear of the overdrive device is disposed between the transmission device and the overdrive device, and the output gear of the overdrive device is disposed between the transmission device and the overdrive device.
The output from the torque converter is transmitted to the ring gear R via the clutch C1.
3 or clutch C2 and brake B1
is input to the first sun gear shaft directly connected to sun gears S2 and B3, and is outputted from carrier P3 and ring gear R2 directly connected to the intermediate shaft. connected to the case, each clutch and brake C1, C2, B
1 and B3 are selectively engaged or released by the operation of these hydraulic servos, and are shifted to either three forward speeds or one reverse speed, and the power output to the intermediate shaft is the carrier 1 of the A-patrive device. 1, one end of the clutch CO is connected to the carrier P1, and the other end of the clutch CO is connected to the sun gear S1 via the brake BO, and the power (j ring gear R1 and the straight 1'i 2) The carrier 1] 2 is locked in one direction on the front side of the outer part of the second plane gearlet 1. One-way ludge F2
, a brake B3 for engaging or releasing the carrier P2 with the case is arranged on the rear side, and a hydraulic servo l of the brake B3 is arranged on the rear side.
The screws 1 to 2 and the cylinder are installed on the rear side of the brake B3, and its return spring is installed in the surplus space outside the third planetary gear set on the front side of the one-way latch 2. Brake B3 and one-way ludge F2
The automatic transmission according to claim 1, wherein the automatic transmission is engaged with the piston by an overhanging arm.