JPS5821061A - Housing of automatic speed change device - Google Patents

Abstract

PURPOSE:To secure a clearance above the road in loading work and reduce oil leakage by positioning a valve body of a hydraulic control device on the upper part of a transmission case and providing a sump of big capacity at the underside of said case. CONSTITUTION:A transmission case 130 fitted on the exterior of a front case 123 and connected to the rear end of a torque converter housing 121 encloses a speed change device rear case 131, under drive device case 133, differential gear rear cover 135, the first and the second gear train case 131, 133, while said case 130 is provided with an opening port 137 on the upper part and further united in one body with a box 136 equipped with a sump 138 of sufficient capacity on the underside of said rear case 131. A hydraulic control device case 150 is connected to the opening port 137 of the box 136 and a housing 110 of an automatic speed change device is completed.

Description

[Detailed description of the invention] It is related to ging.

In recent years, demands for fuel efficiency reduction have become increasingly strict.

With the aim of reducing fuel consumption by making cars smaller and lighter, automobiles are equipped with front engines and fluorocarbon drives (hereinafter referred to as FF).
There is a remarkable tendency towards standardization. In response to this demand, multi-stage automatic transmissions for front-wheel drive vehicles are also required to be small, lightweight, and easy to mount.In particular, for horizontal-engine front-wheel drive small vehicles, there is a need for short overall lengths with shortened axial dimensions. In order to ensure ground clearance when mounted, there were also major constraints on the dimensions from the engine crankshaft to the bottom of the transmission. Also, conventionally,
Oil leakage has been a major problem in automatic transmissions.

The present invention eliminates the conventional pulp body of the hydraulic control device provided at the bottom and the oil pan attached to the lower end, and arranges the pulp body of the hydraulic control device at the top of the transmission case.
Oy 1M with sufficient capacity integrated with transmitsucene case in one part? )
, ensuring ground clearance when mounted, reducing oil leakage, and eliminating temperature-generating factors by providing an oil reservoir with sufficient capacity.

The purpose of this invention is to provide howling in an automatic transmission that can reduce oil agitation loss.

The automatic transmission housing of the present invention includes a hydraulic torque converter, a transmission cylinder, and a hydraulic control device.

The pulp body of the hydraulic control device is disposed on the upper part of the transmission case, and an oil opening having a sufficient capacity is provided in the lower part of the transmission case, which is integrated with the transmission case.

Next, the present invention will be explained based on embodiments shown in the drawings.

FIG. 1 is a side view of a housing 11 of an automatic transmission according to the present invention, and FIG. 2 is a side view of an automatic transmission 1 using the housing.
FIG. 3 is a sectional view of the transmission of the automatic transmission. The automatic transmission unit is composed of a hydraulic torque converter, a transmission H6, and a hydraulic control device 4.

The transmission unit $.O has a first planetary gear set $O and a second planetary gear set 40.

Two multi-disc clutches operated by hydraulic servo,
O! , one besito brake Bl, two multi-disc brakes Bz, B@, seven one-way latches Fl, one one-way brake F2, a first gear train, that is, a three-speed forward/reverse/speed change gear. 1 (l), a third planetary gear safety o, one multi-disc clutch C8 operated by a hydraulic servo, seven multi-disc brakes B4, and seven one-way brakes Fl. In other words, the underadofip device 6.

Differential device 70 and underdrive device output gear 7
1, a reduction gear 8G composed of a differential gear 9 and an idler gear 8.

The housing 110 of the automatic transmission of the present invention is a front housing 12o rear housing on the front side (engine side), that is, the upper side C in FIG. It is composed of an sO, a bearing retainer 14, and a hydraulic control device case 15G.

The front housing 120 is on the fm side (engine side)
Torque converter housing 111 with opened.

A torque converter chamber is provided at the rear of the housing 121! 00A, the cylindrical shaft part 128 which is a cylindrical transmission front case separated by the partition wall of the transmission m1eA in this embodiment, that is, the intermediate support wall 122, and the first gear train chamber, and the fly torque converter housing 111. An output gear 71 and an idler gear 10 of the underdrive device are continuously arranged side by side. The front cases 1!4 and 1!6.111 of the differential gear 7G are integrally formed. The rear housing, that is, the transmission case 11G is the cylindrical front case 1! !
a transmission rear case III which is fitted onto the outside of the transmission case 8 and connected to the rear end of the torque converter housing tit and has a cylindrical rear wall 182; A second gear train chamber having a side wall 134, that is, the case 11 of the underdouble twist device in this embodiment.
The rear cover 186 of the g and h differential gear, the rear case 1m1 of the first gear train case, and the second gear train case 188 are included, and the upper part (the upper part in FIG. 1, the left part in FIG. 2) ) opening 18
7 is formed, and the rear case 181 is integrally formed with a box body 1Bg provided with an oil V reservoir (k) 1sa having sufficient capacity in the lower part 11. The above bearing retainer 140
are the above output gear γl, idler gear γl, differential gear
The respective rear cases 141 and IQ14 are integrally formed.

In the housing 11 of the automatic transmission described above, the front housing 1s and the pairing retainer 14 are formed in a connecting part of the two to have an insulating structure. ! @
*Note 91 Cases 141, 141, 141 have an output gear chamber, an idler gear chamber, and a differential gear chamber that communicate with each other by fitting the cases 141, 141, and 141 and fastening with the port 144. The differential housing IT is formed and the torque converter is a strong connection between the two.
Form the differential housing S...

At the rear of the torque converter/differential housing S... is the housing, that is, the transmi... / four non-cases 18 are connected to form a transmission IE1 and an underdouble device chamber 6, and various pipe bodies C (not shown) and connecting oil passages (not shown) are connected to the opening 11 of the box II. A hydraulic control device case 11 for accommodating a hydraulic control device 4, etc., is connected to form a housing 110 of the automatic transmission.

) Ruta compata snow... is connected to the engine output shaft through the front cover 1, pump impeller snow/snow, connected to the output shaft 1 through the turbine hub and 9 turbine launch! The intermediate support wall 1 via the shaft, one-way brake and 4! The center hole of intention 1! ! A tubular fixed shaft, that is, a stator shaft, is fitted into the shaft and is engaged with the stator! 06. It has a known configuration of a direct-coupled Tarafuchi Yuki 7 connected to a turbine hub, and is installed in the torque converter case 1 Yuki 1.

OiA//Nde9 is the intermediate supporting wall, that is, the partition wall 1!
In the annular space formed between the cylindrical protrusion 9 provided on the outer periphery of the converter side and the fixed shaft outer shaft, that is, the Zende body fitting part 6, there is a fixed shaft shaft 6 that rotates. A pump body 1 is formed by sandwiching and fastening a steel cooking thin plate Is, which is freely fitted onto the outside and accommodates a pump gear 9s driven by a cylindrical drive shaft 14 that is integrated with the snow shovel. . The annular thin plate 9 is used to prevent wear of the pump gear, and also to prevent heavy snow at intervals of 11). The oil passage II is formed on the side surface and closes the nine oil passage grooves 7.

In the transmission chamber L/M, a forward cylindrical 9 center support Ml protrudes from the center of the rear side wall 13, and the intermediate supporting wall! ! !
There is a large-diameter cylindrical piece integrated with the front piping-like fixed shaft snow 2 on the center rear surface of the rear center.
Center support 1 All rear center supports Ml and tubular fixed shaft decoration i are fixed to the rear center support 1) It is the output shaft of the converter and the input shaft of the transmission 1 and the transmission V-n 1 1 is rotatably supported, - a cylindrical seventh middle shaft is rotatably mounted on the outside 11 of the input shaft 1, and a cylindrical f gear shaft is rotatably mounted on the outside thereof, and the front Sentasa &-) 11@/
Transmission gear connected to the tip of the middle ift shaft by splines.
An output gear 4 is rotatably supported.

The input shaft l of the transmiff VW is connected to an annular hydraulic servo center dot 1 which is rotatably fitted to the tip of the forward-facing rear center support 11 at its rear.
is fitted with a spline. The center dome 1 for the hydraulic f-board is open at the front, and has a cylinder protrusion 1 facing toward the center in the middle.
1 is formed, and the inner circumferential wall 21 and the outer circumferential wall are fitted onto the tip of the +1 center point 110! The annular piston snow 3 is fitted into the m between 1s and the clutch's own hydraulic servo c.
1 is formed, and the outer periphery 11! Within 1m Ky # is formed and the first push gear 7 S
・It is connected to ring gear 3. The sun gear 11 is formed at the front end of the hydraulic servo 111 and formed at the rear end of the sun gear shaft S.
．． The planetary carrier S is spline-coupled to the rear end of the first intermediate shaft, the ring gear 13 is connected to the center drum via the multi-disc clutch (31), and the carrier I is rotatably supported. , consists of a sun gear 11 and a pufnetari gear 14 meshed with a ring gear II.In the darkness between the center drag snow 1 and the rear side wall 1s! is an annular hydraulic servo for which the rear center sabot) 11 is rotatably fitted. Rear drum! 8 is provided.

The rear drum depth 3 is open at the front, and the inner circumference I! An annular piston between 281 and the outer peripheral wall 41! 4 is fitted into the multi-plate craft C-shaped hydraulic servo C! is formed, and the outer wall snow S
! It is connected to the cylindrical protrusion 211 of the center drum through a multi-plate clutch CI formed inside, and is also connected to the outer circumferential wall!
It is connected to the front side of the sun gear s1 of the sun gear shaft via a connecting drum 25 connected to the rear end. #The connecting drum 86 is the center drum! ! A friction engagement plate of a belt brake Bw operated by a hydraulic servo (not shown) is provided on the outside of the outer circumferential wall ZSX, which covers the heavy and first gear set lo. ■ is attached.

At the rear end of the inner surface of the cylindrical front case 1211, which is fitted into the rear case 1$1 on the front side of the connecting drum 2b, a front drum 6 for hydraulic servo which is annular and open at the front is fitted. The annular piston 27 is fitted into the inside of the multi-disc brake B! Hydraulic servo b! is formed. Cylindrical front case 1! There is a spline groove 1 on the inner surface of s! A multi-plate brake B! is formed on the front side of the hydraulic servo b3. A one-way latch F is connected to the front side by an outer race fd, and a reverse multi-disc brake B1 is fitted in front of the one-way latch F. The middle part Wln of the front housing tWO, which is the front wall of the transmission chamber 10m.
The rear surface of the is an annular reverse brake hydraulic pressure 5/IJ da! A is formed in the cylinder 28, and an annular piston snow 9 is fitted into the cylinder 28 from the outer periphery to which a pressure transmission ring 891 with an 11I angle for pressing the multi-disc brake Bs protrudingly protrudes from the outer periphery to press the multi-disc brake Bs. A hydraulic servo BL is formed. A protrusion t11 for preventing rotation of the annular piston 290, which is engaged with the spline groove t2am, is provided on the outside of the rear end of the pressure transmission ring 211 of the piston. Inside the brake B3, the sun gear shaft 8 is the inner race fa, and the outer race rb is the brake B2.
One-way latch F connected to case 128 K through
A second planetary gear set 40 is provided in front of the one-way clutch F1. The second gear set 4. is a sun gear 41. formed at the tip of the sun gear shaft 3. Planetary carrier 4 connected to inner race fo of one-way brake F2 and connected to front case 1 via multi-plate brake B8
2. A ring gear 48 connected to the output gear 4. A planetary gear 44 is rotatably supported by a carrier 42 and meshed with a sun gear 41 and a ring gear 43.

In the underground twist device chamber 10Ati, a forward-facing center sabot 81 is provided protruding from the center of the rear wall 1-4.

At the center of the rear case 141 of the output gear, a rearward-facing shaft (front center sabot) It is protruded, and at the center, an output shaft 7 with an output gear 71 formed in the front part is located in the output gear chamber. I A K installed taper roller bearing 7
2, a cylindrical second intermediate shaft 6 is rotatably fitted on the outside of the vk@ portion of the output shaft 7 and the rear sender support 51, and the front center site St is rotatably supported. A gear 6 is rotatably supported.

The front side of the underdrive device chamber 50m, rear wall 1 and 4 is an annular hydraulic cylinder 5! An annular piston 64 having tooth-like protrusions 641 for pressing the brake B4 on the outer periphery is fitted into the cylinder 68 to form a multi-disc brake hydraulic servo b4. The hydraulic servo b
On the front side of the case 4, the rear end of the intermediate shaft 6 is an inner race re, and the outer race ff passes through the toothed protrusion 641 and is connected to the case 1$3 via a nine connecting ring 65. Because it is equipped with a one-way brake Fl. The connecting ring 1
A multi-disc brake B4 is formed inside the case 183 on the front side of the brake pedal 5B. , r! On the front side of the J one-way brake Fa, a rearward cylindrical portion 5 @ 1 is protruded from the intermediate portion, and an annular drum 66 for a hydraulic servo that opens forward 7 is connected.
Between the outer peripheral wall 662 of the drum IS6 and the outer surface of the second intermediate shaft 6, six annular pistons - IJ! A hydraulic servo C3 with a multi-disk clutch Os is formed by being fitted therein, and a multi-disc clutch C is formed within the outer circumferential wall 66 with a ring cover 566.
Carrier of 3rd Putsune Regiar Theft 60 via s
It is further connected to the case tSS via a multi-disc brake formed on the outer side of the cylinder part 661. A third planetary gear seftro 0 is provided on the front side of the hydraulic servo C3, and the third planetary gear seftro 0 is fitted with a sun gear 1 formed at the tip of the second intermediate shaft 6 and a spout fit on the output shaft 7. 1. through the multi-disc clutch Os. 3. A differential ring gear 6g connected to the annular drum 6 - a ring gear connected to the input gear; 3. and carrier 6. Planetary gear 6 is rotatably supported on the snow and meshed with sun gear @l and ring gear @8.
It consists of 4.

Output gear 4 of transmission 11o and underdrive device 6t
If) A chain 160 connecting the two input gears in a driving manner is stretched, and the chain 141 (l is
Said annular piston! Two notches 1li1 are provided at predetermined positions of the pressure transmission ring 2910 of No. 9, and two notches 1li1 are provided at predetermined positions of the cylindrical portion 12B of the transmission front case.
two notches 162 and a transmirror case 110
It passes through two communication holes formed by one notch 16m provided at a predetermined position.

The speed reducer 80 is formed at the tip of the output shaft, and is connected to the output gear chamber by a tapered roller bearing 7g. Output gear 7 of the underdrive device rotatably supported within the IA
1 and front case 126 of idler gear chamber i1A
,! : Tapered roller bearing 8 mounted on the first shaft 81 fixedly installed between 13 cases 1411
The differential gear input section H is rotatably supported in the differential gear chamber by the idler gear chamber rake keeper roller bearing 01 which is rotatably supported in the differential gear chamber and meshed with the output gear 71. It is formed on the outer periphery of the rear part and consists of an input gear that meshes with #idler gear 8.

The differential gear unit is a differential gear unit having a known configuration.
The gear arm is the wheel shaft that is the output shaft of the automatic transmission, I
It is attached to B.

The transmission is controlled by hydraulic pressure that is selectively output from the hydraulic control device 4 to each hydraulic servo according to vehicle running conditions such as vehicle speed and slot μ opening.

The clutches and brakes are engaged and released at 9, and the gears are shifted from two forward gears to one reverse gear. The gear stage (R5NGH) and reduction ratio (R
Mu! ■Table 1.1 shows five examples of 0). Each is shown in I.

table ! 1st example table ■ 2nd example table l 3rd example table 1.1. In the box, ◯ indicates engagement, △ indicates the engine is closed, and × indicates the disengaged state.

Table 1 above. The rotation output from the output shaft i of the underdrive device 60 after being shifted as shown in I is as follows.

Output gear 71. The speed is reduced to a predetermined speed by the idler gear $ and the input gear 9, and the differential gear is activated. The wheel shaft 9, which is the output shaft of the automatic transmission 10, is connected to the wheel shaft 9, which is the output shaft of the automatic transmission 10, through a known differential gear transmission.

-Drive l.

As described above, the automatic transmission housing of the present invention is
Conventional Transmission 1 V
By eliminating the pan, the pulp body of the hydraulic control device is placed on the upper part of the Transmitsu Vw case, and the lower part of the Transmitsu V case is integrated with the Transmitsu I/w case, which has sufficient capacity. It has a configuration with an oil reservoir.

Enables to secure ground clearance when loaded and reduce oil leakage.
Providing an oil uiirb with a sufficient capacity has the effect of eliminating the cause of heat generation and reducing oil agitation loss.

[Brief explanation of the drawing]

FIG. 1 is a side view of a housing of an automatic transmission according to the present invention, FIG. 2 is a cross-sectional view of an automatic transmission using the housing, and FIG. 3 is a skeleton diagram of a transmission changeover for the automatic transmission.

Claims (1)

[Claims] ln type) ruta converter and transmi, V. In the housing of an automatic transmission having a hydraulic control device and a hydraulic control device, the pulp body of the hydraulic control device is
) placed on the top of the V II case, and
A housing for an automatic transmission, characterized in that the lower part of the case is provided with an oil reservoir having a sufficient capacity and integrated with the case. λThe above transmission V11 has a first gear train extending on a first shaft which is a torque converter output shaft and an input shaft of the transmission Vwn, and a first gear train disposed parallel to the first shaft. The first gear train provided on the co-shaft is connected in a driving manner with a chain to form a modified machine with four or more forward speeds and reverse/speed. A differential device is provided on the first shaft and a third shaft which is the output shaft of the automatic transmission and is disposed parallel to the first shaft, and the differential between the output gear of the second gear train and the third shaft is provided. An input gear of the drive device and an idler gear provided on a first shaft provided between the second and third shafts and meshing with both gears constitute a reduction gear, and an opening is formed in the upper part. Oy A/? 1. The automatic transmission housing according to claim 1, wherein a hydraulic control device case housing a pulp body of the hydraulic control device is attached to an opening of the box body.