JPS5847572B2 - Hydraulic oil supply device to hydraulic clutch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hydraulic oil supply device for a hydraulic clutch used in a hydraulically operated automatic transmission for a vehicle.

In general, hydraulically operated automatic transmissions for vehicles are preferably of a parallel two-shaft type in which the input shaft and output shaft are arranged parallel to each other, and a torque converter, a direct clutch, and a shift clutch are arranged on the input shaft. It is said that

This is a necessary arrangement before the torque converter increases the torque from the engine, and in general, in reduction type gear systems, the clutch is placed on the side where the transmission torque capacity is small in order to reduce the clutch capacity and make it more compact. It is from.

In this way, when three or more clutches are provided on one shaft, it is difficult to supply hydraulic oil without friction or oil leakage that would cause power loss.

The present invention was made in view of the current situation, and an object of the present invention is to provide a hydraulic oil supply device for a hydraulic clutch on a rotating shaft without friction or oil leakage that would cause power loss. A further object of the present invention is to provide a supply device that is easy to assemble and allows the condition of the oil passage to be easily checked during assembly or during maintenance.

To explain this with reference to the illustrated embodiment, 1 is a crankshaft;
2 is a torque converter, 3 is a transmission, and a case 4 of the transmission 3 includes a pump 5 of the torque converter 2.
A fluid pressure generating device 6 consisting of a gear pump connected to a stator shaft 9 connected to a stator 7 of the torque converter 2 via a one-way clutch 8, and an input rotating shaft 1 connected to a turbine 10 of the torque converter 2.
1, a low gear 12 and a reverse gear 13 on the rotating shaft 11
, a second gear 14, a third gear 15, etc., and a direct clutch 17 located between the pump 5 and the turbine 10. and second gear 15
Second clutch 18 and low gear 14 located on the side of
A low clutch 19 is provided on the side of the low clutch 19, and a center hole 20 that extends in the axial direction including the low clutch 19 and is open at one end facing the case 4 is provided, and the center hole 20 is connected to each clutch 17, 18.19 hydraulic working chambers 17a, 18a,
Side holes 21a, 2lb, 21c, which are connected to 19a, are provided.

Reference numeral 22 denotes a through hole that faces the opening of the center hole 20 and is provided through the cover 4a forming a part of the case 4, and each through hole 22 has a direct clutch oil passage connected to a hydraulic power source. 23, opening surfaces 22a and 22b where the second clutch oil passage 24 and the low clutch oil passage 25 open,
22C is formed with steps so that the diameter becomes smaller in order from medium to small, and the large opening surface 22a and the middle opening surface 22b each have an annular support plate 2 with an elastic body 26 such as rubber baked on the outer periphery.
7a, 27b to ring plate 28 and circlip 2
9, and the support plate 27a.
27b is each oil passage 23. Pipe 30a communicating with 24
, 30b are double-supported inside and outside, and in this case, each pipe 30a, 30b is loosely fitted into the support plates 27a, 27b so that it can be tilted with respect to the through hole 22, and its outer periphery is provided inside the support tag. 31a and 3lb, and in order to restrict the movement of the pipes 30a and 30b in the axial direction, the pipe 30a is held by a pin stopper 32 inserted in the diameter direction of the pipe inside the support plate 27a, and the pipe 30b is supported by the pin stopper 32. A cylindrical stopper 3 which is shaped like a cylinder to be bit into the protruding end of the pipe on the outside of the plate 27b, and has a locking groove 33a in its free end with which the tip of the pin 32 can engage.
It was held at 3.

Further, a pipe 30c is provided at the open end of the through hole 22 on the rotating shaft side, and the pipe 30c is installed inside the pipe 30b, opens into the small opening surface 22c, and communicates with the low clutch oil passage 25.The pipe 30c is also transparent. A 01J ring 31C is loosely fitted into the opening end so that it can be inclined with respect to the hole 22, and its outer periphery is provided in the opening.
In order to further restrict the movement of the pipe 30C in the axial direction, a stopper 34 having the same shape as the cylindrical stopper 33 is provided.
It was held at

Each pipe 30a, 30b, 30c is connected to the rotating shaft 11.
In the center hole 20 of each side hole 21a, 2lb, 21
It is rotatably and sealably supported via bearings 35a, 35b, and 35c in front of the rotary shaft 11, and the through hole 22 is sealed on the opposite side facing the rotating shaft 11 with a lid 36, which can be attached or removed. Circlip 37 on the outside as shown.
I supported it.

In the figure, numeral 38 indicates a third clutch provided on the output rotating shaft 16, and the supply of hydraulic oil to the clutch 38 is carried out by a support that is fitted into an opening recess 39a of an oil passage 39 for the third clutch provided in the case cover 43. This is done by a pipe 42 which is supported at one end by a plate 40 and rotatably and sealably supported at the other end within the center hole 41 of the rotating shaft 16.

In the illustrated example, the outermost pipe 30G is directly supported by the case via the 01J ring 31c, but it may also be supported via a support plate like the pipes 30a and 30b, or the through hole 22 Although the stepped hole is used, it may also be formed in a tapered shape. In this case, the circumference of the support plate or the circumferential surface of the elastic body baked onto it is inclined to match the taper, and the inclination of the pipe is Although this was done by loosely fitting the pipe into the support plate, it may also be done by fixing the pipe to the support plate and arranging an elastic seal between the support plate and the inner peripheral surface of the through hole.

Basically, it is preferable to provide the pipes as many concentrically as the number of clutches installed on the rotating shaft, and on one side of the shaft for ease of assembly and compactness. In this case, the pipes are part of the case. After the cover forming the pipe is assembled, the pipes are successively positioned through the cover.

In this way, according to the present invention, the hydraulic oil is supplied to the hydraulic clutch on the rotating shaft by the pipe supported in the center hole of the rotating shaft, so there is no loss of friction and no oil leakage, so the power is reduced. This is advantageous in that losses can be reduced, and since the pipe is inserted into the central hole through a hole provided on the outside of the case, its assembly can be significantly improved.

In addition, the cover plate attached to the through hole is removable, and when the cover plate is removed during maintenance, the other end of the pipe is exposed, so it is easy to check whether the oil passage needs maintenance by supplying hydraulic pressure. In addition, when the pipe is supported so that it can be tilted freely relative to the case, even if the axis of rotation and the through hole do not align, it can be supported floatingly for a long period of time without causing uneven wear on the support part in the center hole of the pipe. In addition, when the pipe is supported via a stopper fixed to it, it is possible to prevent oil leakage in the axial direction of the pipe when pressure oil is supplied from a hydraulic source or when pressure oil is discharged from a clutch. to prevent the movement of
The seal can be made simple, and even if there are multiple clutches on the rotating shaft, by making the pipe an inner fitting pipe, it can be easily supplied separately, and it can be inserted from the outer pipe through the through hole. This serves as a guide for the inner pipe and has the effect of improving its assemblability.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal cross-sectional view, FIG. 2 is an enlarged vertical cross-sectional view of the main part, and FIG. 3 is a cross-sectional view of FIG. 2 A-A.
A line sectional view, FIG. 4 is a longitudinal sectional view of the cylindrical stopper. 4... Case, 11... Rotating shaft, 17
...Direct clutch, 18...Second clutch, 19...Low clutch, 20
... Center hole, 21 ... Side hole, 22 ...
...Through hole, 23...Oil passage for direct clutch, 24...Oil passage for second clutch,
25...Oil passage for low clutch, 30...
... Pipe, 36 ... Lid body, 31 ...
0 1 J ng, 33...stoppa.

Claims (1)

[Scope of Claims] 1. A hydraulic oil supply device for a hydraulic clutch configured to supply hydraulic oil from a hydraulic source to a plurality of hydraulic clutches on a rotating shaft supported by a case, in which a shaft center is connected to the rotating shaft. A center hole extending in the axial direction and opening at one end facing the case, and a plurality of side holes communicating the center hole with each hydraulic operation chamber of each hydraulic clutch are provided, and each side hole is provided in the center hole. A separate pipe is formed into a large diameter pipe in a side hole close to the case side, and a small diameter pipe is formed in a side hole far from the case side to be inserted into the large diameter pipe, and one end of each is rotated to the inner surface of the center hole. The other end of each is inserted into a through hole provided in the case so as to be freely supported and open in the axial direction with a plurality of oil passages connected to a hydraulic power source, and within the through hole, the small diameter pipe is separated from the large diameter pipe. According to the present invention, each oil passage is supported by a support plate provided so as to isolate each oil passage so as to be located sequentially outside, and a cover plate is provided which sealably closes the through hole on the opposite side facing the rotation axis. Hydraulic oil supply device to hydraulic clutch. 2. The hydraulic oil supply device for a hydraulic clutch according to claim 1, wherein the cover plate is detachably attached to the through hole. 3. The hydraulic oil supply device for a hydraulic clutch according to claim 1, wherein the pipe is tiltably supported by a case via an elastic body. 4. The hydraulic oil supply device for a hydraulic clutch according to claim 1, wherein the pipe is supported through a stopper fixed to the pipe so as to restrict movement in the axial direction. 5. A support plate that reduces the diameter of the through-hole toward the rotation axis, supports the large-diameter pipe through a support plate that arranges the large-diameter pipe in the direction of the small diameter of the through-hole, and arranges the small-diameter pipe in the direction of the large diameter of the through-hole. 2. A hydraulic oil supply device for a hydraulic clutch according to claim 1, wherein the hydraulic oil supply device is supported via a hydraulic clutch.