JPS58149445A - Power cylinder for automatic transmission - Google Patents

Abstract

PURPOSE:To facilitate the operation and positioning of a selector lever during automatic speed change by a structure wherein a fixed piston and a moving piston are respectively housed in the two cylinder chambers of the hydraulic cylinder in order to control them. CONSTITUTION:The fixed piston 4 is housed in the cylinder chamber 13 and the moving piston 5 is housed in the cylinder chamber 14 of the cylinder 3 respectively. The connecting rod 32 of the selector lever takes the position (a) by supplying pressure oil to ports 15 and 18. When pressure oil is supplied to a port 17 and the port 18 is communicated to drain under the conditions as mentioned above, the connecting rod 32 takes the position (b). When pressure oil is supplied to the ports 16 and 18 and the ports 15 and 17 are communicated to drain, the connecting rod 32 takes the position (c). When pressure oil is supplied to the ports 16 and 17 and the ports 15 and 18 are communicated to drain, the connecting rod 32 takes the position (d).

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power cylinder for use in automatic transmissions used in automobiles, and in particular, a power cylinder having a simple and inexpensive structure for use in ordinary mechanical transmissions. This article relates to a power cylinder for automatic transmission transmission.

Conventionally, cars that have adopted a manual transmission transformer have less fuel consumption because there is no slippage loss like in a torque converter, but the shift lever has to be operated heavily and the clutch pedal has to be depressed. This has the disadvantage that the driver gets tired because it requires a lot of force and the number of times it is repeated is extremely high.In addition, in cars that use a torque converter type automatic transmission transmission, driving is extremely easy. However, it had the drawback of increasing fuel consumption.To eliminate this drawback, it is possible to automate the normal mechanical transmission transmission using a power cylinder, but the 411 construction is simple. Since there were no high-performance power cylinders, it was extremely difficult and rare to automate a conventional mechanical transmission transmission.

The present invention has been made to eliminate the drawbacks of the prior art described in RTR2 above, and its purpose is to easily automate the conventional mechanical transmission transformer assembly using a power cylinder. Another object of the present invention is to provide a 1IIh transmission transbasin which is easy to drive and consumes little fuel. Another object of the present invention is to reduce costs by operating and positioning a select lever of an automatic transmission transmission using a power cylinder having a simple structure.

In short, the present invention provides a spool control valve that controls a fluid flow path and is provided with a plurality of boats, and a spool control valve that forms two isolated cylinder chambers, with the boats of the spool control valve at one end and the other end of the cylinder chamber. a first piston integrally formed with a first piston rod that is fitted into one cylinder chamber of the cylinder and has one end fixed to a fixed member; a second piston integrally formed with a second piston rod that is slidably inserted into the other cylinder chamber of the cylinder and whose one end is connected to a transformer gear selector lever via a connecting mechanism; and identifying the first piston and displacing the cylinder and the second piston integrally or relative to each other with respect to the first piston. The device is characterized in that it is configured to move the selector hardware to a predetermined position.

The present invention will be explained below based on embodiments shown in the drawings. A power cylinder 1 for an automatic transmission transmission according to the present invention includes a spool control valve 2, a cylinder 3, a first piston 4, and a second piston 5. , a control lever 9 pivotally connected at one end to the case 8
and nine spools 10, one end of which is pivotally connected to the lower part of the control lever, and a boat 11, with 14 boats 11 in the embodiment.
a.

11b, IIC, and lid, and by manually or electrically automatically operating the control lever 9, the spool 10 is moved to control the fluid flow path. , cylinder chamber 13 isolated into left and right sides
．． 14 and a spool III at one end and the other end of these chambers.
J Goben 2 Ho) 11a, llb, IIC.

Oil introduction hole 1, which is an example of a fluid that communicates with each lid.
5, 16, 17, 18 are formed, and the first piston 40 stroke ti/ in the left cylinder chamber 13
fi, second piston 5 in the right cylinder chamber 14
The stroke 22,02 times the o first piston 4 is extended low into the left cylinder chamber 13 and formed in the LU first piston. A first piston rod 20 is integrally fixed to the f14a, and one end of the piston rod is fixed to the case cover 21 for the transmission blind b! i1 The second piston 5, which is fixed with a nut 25 to an intermediate member 24 connected to the building member 22 by a pin 23, is slidably inserted into the right negative cylinder chamber 14, and The +-1 and @2 Noviston rods 28 are integrally fixed to the small diameter portion 58 formed in the piston of #! One end of the piston rod in No. 2 is fixed to one end of the joint member 29 with a bolt 30, and the other end of the joint member has an intermediate portion pivotally connected to the case cover 21. Select lever 3
The other end of a connecting rod 32, which is an example of a connecting mechanism connected to the connecting rod 1, is pivotally connected to the other end.

Then, operate the control lever 9 of the spool control valve 2 to appropriately cut off the oil flow path using the spool 10.

By changing the boat lla, flb.

11C, controlling the oil flowing out from the lid, fixing the first piston 4, and displacing the cylinder 3 and the second piston 5 integrally and relative to each other with respect to the l-th piston 4; The present invention is constructed as described above, and its operation will be explained below. Itiljig of stool control valve 2
Operate the l lever 9 to operate the spool 10, and turn on the four bows + lla, llb, llc, and lid.
As shown in Table 1, the opening 11 (O
N) or closed H (opF), the cylinder 3 and the second piston 5 are displaced integrally or relative to each other with respect to the piston 4 which is fixed A7'c161,
Accordingly, the select lever 31 operates via the joint member 29 and the connecting rod 32 and moves to a predetermined position. When the boat 11a and the lid are turned on as shown in FIG. The right end of the left cylinder chamber 13 moves to the leftmost position where it abuts the first piston 4, and at the same time, the #42 piston 5Fi is suppressed to the left by the oil flowing in from the oil introduction hole 18. It moves to the leftmost direction 1i1 where it comes into contact with the left end of the right cylinder chamber 14. As a result, the joint member 2
The pivot point P between the connecting rod 32 and the select lever 31 is set at the point a, and the pivot point Q between the connecting rod 32 and the select lever 31 is set at the point 1 to select the shifter head 35.

Then bow as shown in la1 table B stroke) 1151. II
When C is turned ON and boats xi'b and lld are turned OFF, cylinder 3 is set to 1WI as shown in Figure 2, as shown in Figure 3.
When the #I2 piston 5 is moved to the leftmost position, the #I2 piston 5 is pushed rightward by the oil flowing in from the oil introduction gaff and moves to a position where it comes into contact with the right end of the right cylinder chamber 14. As a result, the pivot point P moves approximately a length t to the right from point a to point A, as shown in FIG. Move and select shifter head 36.

Next, as shown in column C of Table 1, Bo? 11b.

When the lid is turned ON and the boat lla and IIC are turned OFF, the cylinder 3 is pushed to the right by the oil flowing in from the oil introduction hole 16, and the left end of the left cylinder chamber 13 is pushed as shown in FIG. The second piston 5 moves to the rightmost position where it contacts the first piston 4 km, and at the same time, the second piston 5 is pushed to the left by the oil flowing in from the oil introduction hole 18 and comes into contact with the left end of the right cylinder chamber 14. Move to the position where they touch. As a result, the cylinder 3 moves to the right by a length t from the state shown in FIG. 3, and the second piston 5 moves by a length t! from the state shown in FIG. As shown in Fig. 4, the pivot point P moves to the right by a length t2 approximately to the twisting point C, and as a result, the pivot point Q moves to the right. Move to point c and select shifter head 37.

Next, as shown in turtle 1 table DIl11, boat 11b.

11C to 0NFcL, bow) 11a, lid to 01'F
Then, as shown in FIG. 5, the cylinder 3 is moved to the rightmost position as in FIG.
i It is pushed to the right and moves to the position where it abuts the right end of the right cylinder chamber 14. As a result, the second piston 5 has a length t from the state shown in FIG. 4! As shown in FIG. 5, the pivot point P#i moves to the right by
Approximately the length t! Accordingly, the pivot point Q moves to point dM and selects the shifter head 38.

As described above, according to the present invention, the selector lever for the transmitter 1 can be moved to a predetermined position by simply operating the control lever 9 of the spool control valve 2 with an extremely small amount of force, thereby making operation easier. At the same time, a normal mechanical speed change transformer can be automatically changed, and by automating the crunch operation, a mechanical automatic speed change transformer can be created.

In addition, in the above, the fluid was explained as oil, but
It is obvious that this can also be done by air.

Since the present invention is configured and operates as described above, it is possible to increase the speed of a normal mechanical transmission by using a power cylinder, and by adopting this in an automobile, driving becomes easier. Not only is it easier to operate, it also consumes less fuel than a torque converter type.

This invention has the effect of being able to provide a high-speed transmission at a low cost for the select lever movement of the IIJ transmission transmission mixer, and is a very exciting invention with practical value.

[Brief explanation of the drawing]

The drawings relate to a further embodiment of the present invention, in which Fig. 1 is a plan view of the power cylinder, Figs. 3 is a longitudinal sectional view when the second piston is in the leftmost position, FIG. FIG. 5 is a longitudinal sectional view when the second piston is moved to the right by a length t Ks from the position shown in FIG. 3, and FIG. 5 is a longitudinal sectional view when the second piston is at the rightmost position. 1 is a power cylinder for the transmission cylinder, 2 is a spool control valve, 3Fi cylinder, -4Fi first piston,
5 is the second piston, 11,1llllb111C,li
d is a boat, 13 and 14t are cylinder chambers, respectively.
5, 16, 17, and 18 are oil introduction holes, respectively, and 20 is the first
2B is a second piston rod, 31Fi select lever, and 32 is a connecting rod which is an example of a connecting mechanism. Patent applicant: Higi Jidosha Kogyo Co., Ltd. Agent Patent attorney: 1) Kazuo Figure 1 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] A spool control valve that controls a fluid flow path and is provided with a plurality of ports, and an oil inlet that forms two isolated cylinder chambers and communicates with the boat of the spool control valve at one end and the other end of the cylinder chamber. A first piston integrally formed with a cylinder having holes respectively formed therein, a first piston rod that is fitted into one cylinder chamber of the skeleton cylinder and whose one end is fixed to a fixed member, and the other cylinder chamber of the skeleton cylinder. a second piston integrally formed with a second piston rod which is slidably inserted into the cylinder chamber and whose one end is connected to the transisser selector lever via a connecting mechanism; 1 piston is fixed and the cylinder and #! The automatic transmission is characterized in that the transformer spring select lever is moved to a predetermined position by displacing the second piston integrally or relative to the first piston. Hower cylinder for speed change transformer ◎