JPH0671958U - Automotive transmission control device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a transmission control device for an automobile, which can reduce the select operation force without impairing the sense of moderation during the select operation, improve operability, and reduce driver fatigue. [Structure] A select link 2 swingable in conjunction with the select operation of the change lever 1, a shift link 3 swingable in conjunction with the shift operation of the change lever 1, and an upper case 5 on the transmission body 4. Select shift rod 6 that is slidable and twistable
And a select cylinder device 7 that slides the rod 6 to a desired select position, and the select cylinder device 7 is stepwise switched according to the select position of the change lever 1 to supply and discharge the working fluid from the pressure source 8 A transmission control device is composed of the control valve 9 and the control valve 9.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle transmission control device.

[0002]

[Prior art]

 Generally, when changing gears of an automobile transmission, a select shift rod provided on the upper case of the transmission body is slid to a required select position in the axial direction by a so-called select operation of moving a change lever in a neutral position left and right. After that, the select lever is twisted by a so-called shift operation of moving the change lever back and forth, and the synchronizer is slid by the shift operation of the shift fork by twisting the select shift rod.

[0003]

[Problems to be solved by the device]

 However, in the case of a vehicle such as a bus in which the change lever and the transmission are far apart from each other, many rods and joints for connecting the change lever and the select shift rod are required, and various devices are required. In order to avoid obstacles such as the above, the method of arranging the rods, etc. becomes complicated, the force required for the select operation increases due to their sliding resistance, etc., and the position of the change lever during the select operation is clearly understood. Since it is not possible to do so and the so-called moderation is lacking, it becomes difficult to smoothly perform the shift from the selection operation to the shift operation, resulting in a decrease in operability and an increase in driver fatigue.

In view of such circumstances, the present invention can reduce the force required for the select operation without impairing the sense of moderation during the select operation, improve the operability, and reduce the tiredness of the driver. It aims to provide a transmission control device.

[0005]

[Means for Solving the Problems]

 The present invention provides a select link that is swingably arranged in association with a select operation of a change lever provided in a driver's seat, and a shift link that is swingably arranged in association with a shift operation of the change lever. And a select shift rod provided in the upper case on the transmission main body, which is provided in a twisting state so as to be slidable in the axial direction in association with the swing of the select link and interlocked with the swing of the shift link. A transmission control device for an automobile, comprising: a cylinder body integrally provided with the upper case; and a piston slidably fitted in the cylinder body and connected to the select shift rod. , By supplying and discharging the working fluid from the pressure source to and from the plurality of cylinder chambers partitioned by the piston, Valve body having a select cylinder device for sliding the automatic shift rod to a desired select position, an intake port connected to the pressure source, and a supply / discharge port connected to a cylinder chamber of the select cylinder device. And a control shaft, one end of which is connected to the select link and slidably inserted into the valve body, and which connects or disconnects the intake port and the supply / discharge port depending on the sliding position of the control shaft. And a valve body disposed in the valve body so as to obtain a changeover in a stepwise manner corresponding to the select position of the change lever, and operating from a pressure source into a desired cylinder chamber of the select cylinder device. And a control valve for supplying and discharging the fluid.

[0006]

[Action]

 Therefore, when the change lever is selected, the select link oscillates in conjunction with the select operation of the change lever, the control shaft of the control valve is pushed and pulled, and the valve element operates. The supply / exhaust ports are connected or shut off, whereby the control valve is switched in stages corresponding to the select position of the change lever, and the working fluid from the pressure source is supplied to the desired cylinder chamber of the select cylinder device. The piston of the select cylinder device is ejected, moves in a desired direction, and the select shift rod slides by a required amount and is held at a desired select position.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

1 to 6 show an embodiment of the present invention, which shows a transmission control device for reverse 1 speed, forward 5 speed shift, and 1 is a select operation and a shift operation on a driver's seat. A change lever freely provided, 2 is a select link that is swingably arranged in association with a select operation of the change lever 1, and 3 is swingably arranged in association with a shift operation of the change lever 1. The shift link 4 is provided, 4 is a transmission main body, 5 is an upper case mounted on the transmission main body 4, and 6 is provided on the upper case 5 so as to be slidable in the axial direction and rotatable about the axis. Select shift rod, 7 is a select cylinder device for sliding the select shift rod 6 to a desired select position, and 8 is a select cylinder. A pressure source such as an air tank that stores a working fluid such as air for the binder device 7, 9 is switched in stages corresponding to the select position of the change lever 1, and a head side chamber 48a and a rod of the select cylinder device 7 which will be described later are provided. A control valve for supplying and discharging the working fluid from the pressure source 8 to the side chamber 48b, 10 is a shift arm fitted to the end of the select shift rod 6, 11 is the shift link 3 and the shift arm 10, and the ball joint 12 is It is a transmission member such as a rod or cable that is connected via

The configuration of the control valve 9 will be described in detail with reference to FIGS.

A control shaft 15 having an upper end pivotally attached to the tip of the select link 2 is slidably inserted into a vertically extending through hole 14 formed in a valve body 13 mounted on the vehicle body side. An annular groove 16, 17 is formed at a required position in the longitudinal direction of the control shaft 15, and a spring 18 for urging the control shaft 15 upward is provided at the lower end of the through hole 14, and the select link is provided. 2 is provided between the valve body 13 and the valve body 13, a spring 19 for urging the select link 2 to rotate downward in FIG. 2 is provided, and the urging forces of both springs 18 and 19 are balanced so that the neutral state is achieved. The control shaft 15 is held at a position corresponding to the second speed and the third speed shown in FIG. In FIG. 2, 20 is a ball that engages with the annular groove 17 of the control shaft 15 that is held at the positions corresponding to the 2nd and 3rd speeds, and 21 urges the ball 20 toward the control shaft 15 side. It is a spring.

The valve body 13 is connected with an intake port 23 to which a pipe 22 extending from the pressure source 8 is connected, and pipes 24 a and 24 b communicating with a head side chamber 48 a and a rod side chamber 48 b of the select cylinder device 7 which will be described later. The first and second supply / discharge ports 25a and 25b, the first and second discharge ports 26a and 26b which are open to the atmosphere, the first suction chamber 27a which communicates with the suction port 23, and the suction port 23. A second suction chamber 27b communicating with the first suction chamber 27a through a hole 28, and a first hole communicating with the first discharge port 26a and through the through hole 14 into which the control shaft 15 is fitted. A discharge chamber 29a, a second discharge chamber 29b communicating with the second discharge port 26b and opening in the through hole 14 into which the control shaft 15 is fitted, and the first discharge chamber 29b. A first flow path 30a communicating with the supply / discharge port 25a and connecting the first suction chamber 27a and the first discharge chamber 29a, and a second flow chamber communicating with the second supply / discharge port 25b and the second suction chamber 27b and the second discharge chamber. A second flow passage 30b communicating with the chamber 29b is formed, and the end portion of the first flow passage 30a on the first suction chamber 27a side can be opened and closed in the first suction chamber 27a and is closed by the spring 31a. A first valve seat 32a that is biased is provided, and an end of the second flow passage 30b on the second suction chamber 27b side can be opened and closed in the second suction chamber 27b and is biased in the closing direction by a spring 31b. A second valve seat 32b is provided.

The first valve seat 32a is opened and closed in the first flow passage 30a and the first discharge chamber 29a, and the first flow passage 30a and the first discharge chamber 29a are provided only when the first valve seat 32a is closed. The first valve member 33a, which can communicate with the second valve seat, is fitted and inserted so as to be biased toward the control shaft 15 by the spring 34a, and the second valve seat is provided in the second flow passage 30b and the second discharge chamber 29b. The second valve member 33b, which opens and closes the second valve seat 32b and allows the second passage 30b and the second discharge chamber 29b to communicate with each other only when the second valve seat 32b is closed, is urged toward the control shaft 15 side by the spring 34b. To insert. The first valve member 33a is slidably inserted into the first discharge chamber 29a and has a piston portion 36a having a ball 35a that abuts the outer peripheral surface of the control shaft 15 and slides into the first flow passage 30a. A piston portion 37a that is movably fitted and that blocks the first flow passage 30a and the first discharge chamber 29a, and a rod portion 38a that can come into contact with and separate from the first valve seat 32a are provided. The valve member 33a is provided with a through hole 39a which is open at the end face of the rod portion 38a and is opened at the outer peripheral surface between the piston portions 36a, 37a so as to communicate with the first discharge chamber 29a. The second valve member 33b is slidably fitted into the second discharge chamber 29b and has a piston portion 36b having a ball 35b that abuts the outer peripheral surface of the control shaft 15, and a second flow path. 0b, a piston portion 37b slidably fitted in and blocking the second flow passage 30b and the second discharge chamber 29b, and a rod portion 38b capable of abutting and separating from the second valve seat 32b. The second valve member 33b is provided with a through hole 39b which is opened at the end surface of the rod portion 38b and is opened at the outer peripheral surface between the piston portions 36b and 37b so as to communicate with the second discharge chamber 29b. is there.

2 to 4, 40a is a retainer that closes the opening of the first suction chamber 27a, and 40b is a retainer that closes the opening of the second suction chamber 27b.

On the other hand, the select cylinder device 7 has a structure as shown in FIGS.

That is, a ring-shaped stopper 42 is provided at a substantially central portion in the axial direction in the cylinder body 41 which is integral with the upper case 5 and into which the end portion of the select shift rod 6 penetrates from one end side. The cylinder body 41 at the position of the stopper 42 is provided with a hole 43 for opening to the atmosphere, and pipes 24a and 24b extending from the control valve 9 are connected to both ends of the cylinder body 41 in the axial direction. Outer pistons 46a, 46b are formed slidably in the cylinder body 41 and have cylindrical flanges 45a, 45b projecting to the inner edge of the end on the side opposite to the stopper 42. And the inner piston 47 fitted to the end of the select shift rod 6 is slid inside the outer pistons 46a and 46b. Insert freely.

5 and 6, 48a is a head side chamber of the select cylinder device 7, 48b is a rod side chamber of the select cylinder device 7, and 49 is a shift fork (not shown) fitted to the select shift rod 6. It is a drive lever for driving.

Next, the operation of the above embodiment will be described.

In the neutral state, the control shaft 15 of the control valve 9 is held in the position corresponding to the second speed and the third speed shown in FIG. 2 by the balance of the urging forces of the springs 18 and 19, which corresponds to this. As shown in FIG. 1, the change lever 1 is also held at the positions corresponding to the second and third speeds.

In this state, since the first and second valve seats 32a and 32b are opened by the first and second valve members 33a and 33b, they are supplied from the pressure source 8 through the pipe 22. The working fluid is supplied from the supply / discharge port 44a of the select cylinder device 7 shown in FIGS. 5 and 6 through the suction port 23, the first suction chamber 27a, the first flow passage 30a, the first supply / discharge port 25a, and the pipe 24a. While being supplied to the head side chamber 48a, the working fluid is supplied to the suction port 23, the first suction chamber 27a, the hole 28, the second suction chamber 27b, the second flow passage 30b, the second supply / discharge port 25b, and the pipe 24b. Through the supply / exhaust port 44b of the select cylinder device 7 shown in FIGS. 5 and 6 to the rod side chamber 48b, and as a result, as shown in FIGS. 6b is held at a position where it abuts against the stopper 42, and the drive lever 49 fitted to the select shift rod 6 is held at a position corresponding to the second speed and the third speed.

When the change lever 1 is selected from the above-described state to the reverse or first speed side, the select link 2 swings upward in FIG. 2, the control shaft 15 slides upward, and the ball 20 moves in an annular groove. 17, the ball 35a of the first valve member 33a fits into the annular groove 16, and the first valve member 33a moves toward the control shaft 15 side by the urging force of the spring 34a, so that the rod portion 38a moves. The first valve seat 32a is retracted into the first flow passage 30a, and the first valve seat 32a closes the first flow passage 30a by the urging force of the spring 31a.

When the rod portion 38a is retracted into the first flow path 30a and the first flow path 30a is closed by the first valve seat 32a, the first valve seat 32a has been closed by that time. The flow hole 39a of the one valve member 33a is opened in the first flow path 30a, and the first supply / discharge port 25a is connected to the first discharge port 26a via the first flow path 30a, the flow hole 39a, and the first discharge chamber 29a. In communication, the head side chamber 48a of the select cylinder device 7 is opened to the atmosphere.

When the head side chamber 48a of the select cylinder device 7 is opened to the atmosphere, the pressure of the working fluid in the rod side chamber 48b causes the inner piston 47 and the outer piston 46a to move to the head side chamber 48a as shown in FIG. 6C. To the reverse shift, the drive lever 49 fitted to the select shift rod 6 moves to the position corresponding to the reverse and the first speed, and the shift lever is operated from this state to reverse the transmission. Alternatively, it can be switched to the first speed.

On the other hand, when the change lever 1 is selected from the position corresponding to the 2nd speed and the 3rd speed in the neutral state to the 4th speed and the 5th speed side, the select link 2 swings downward in FIG. Then, the control shaft 15 slides downward, the ball 35b of the second valve member 33b fits into the annular groove 17, and the second valve member 33b moves toward the control shaft 15 side by the urging force of the spring 34b. The rod portion 38b retracts into the second flow passage 30b, and the second valve seat 32b closes the second flow passage 30b by the urging force of the spring 31b.

When the rod portion 38b is retracted into the second flow passage 30b and the second flow passage 30b is closed by the second valve seat 32b, it is closed by the second valve seat 32b until then. The second valve member 33b has a flow hole 39b opened in the second flow path 30b, and the second supply / discharge port 25b is connected to the second flow path 30b, the flow hole 39b, and the second discharge chamber 29b. The rod side chamber 48b of the select cylinder device 7 is opened to the atmosphere by communicating with the discharge port 26b.

When the rod side chamber 48b of the select cylinder device 7 is opened to the atmosphere, the pressure of the working fluid in the head side chamber 48a causes the inner piston 47 and the outer piston 46b to move to the rod side chamber 48b as shown in FIG. 6 (A). When the drive lever 49 fitted to the select shift rod 6 moves to a position corresponding to the 4th or 5th speed, the change lever 1 is shifted from this state to shift the transmission to the 4th speed. Alternatively, it can be switched to 5th speed.

In this way, the control valve 9 holds the control shaft 15 at the reference position by the balance of the urging force of the springs 18 and 19, and the ball 35 a, which is in the control valve 9, to the annular grooves 16 and 17 of the control shaft 15. The stepwise movement of the ball 35b and the ball 20 in and out makes it possible to clarify the moderation sensation during the select operation. Further, the pressure of the working fluid from the pressure source 8 drives the select cylinder device 7. By making the select shift rod 6 slide, the force required for the select operation can be reduced, and the operability can be improved and the driver's fatigue level can be reduced.

FIGS. 7 to 12 show another embodiment of the present invention, which is a transmission control device for 1-speed reverse and 6-speed forward shift, and FIGS. The parts with the same reference numeral represent the same things.

The structure of the control valve 9 ′ is basically the same as that of the control valve 9 shown in FIGS. 2 to 4, and a valve body 13 similar to the control valve 9 is additionally equipped. As shown in FIGS. 8 to 10, a third supply port 23 'to which a pipe 22' extending from the pressure source 8 is connected and a pipe 24c communicating with a head side chamber 48c of a select cylinder device 7'to be described later are connected. The exhaust port 25c, the third exhaust port 26c exposed to the atmosphere, the third intake chamber 27c communicating with the intake port 23 ', and the control shaft 15 communicating with the third exhaust port 26c. A third discharge chamber 29c opening to the through hole 14 and a third flow passage 30c communicating with the third supply / discharge port 25c and communicating with the third suction chamber 27c and the third discharge chamber 29c. To form.

Further, inside the third suction chamber 27c, there is provided a third valve seat 32c capable of opening and closing the end portion of the third flow passage 30c on the side of the third suction chamber 27c and biased in the closing direction by a spring 31c. The third flow passage 30c and the third discharge chamber 29c are opened and closed in the third flow passage 30c and the third discharge chamber 29c and only when the third valve seat 32c is closed. The third valve member 33c capable of communicating with the above is fitted and inserted so as to be biased toward the control shaft 15 side by the spring 34c. The third valve member 33c is slidably fitted in the third discharge chamber 29c and slidable in the third flow passage 30c with a piston portion 36c having a ball 35c that abuts the outer peripheral surface of the control shaft 15. A piston portion 37c that is freely inserted and cuts off the third flow passage 30c and the third discharge chamber 29c, and a rod portion 38c that can contact and separate from the third valve seat 32c are provided. The valve member 33c is provided with a through hole 39a which is opened at the end face of the rod portion 38c and is opened at the outer peripheral surface between the piston portions 36c and 37c so as to communicate with the third discharge chamber 29c.

In FIGS. 8 and 9, 40c is a retainer that closes the opening of the third suction chamber 27c.

On the other hand, as shown in FIGS. 11 and 12, the select cylinder device 7 ′ is integrated with the upper case 5 and into the cylinder body 41 ′ into which the end of the select shift rod 6 is inserted from one end side. A supply / discharge port 44c connected to a pipe 24c extending from the control valve 9 ′ and a supply / discharge port connected to a pipe 24a extending from the control valve 9 ′ with a required space from the head side to the rod side. 44 a ′, a hole 43 ′ for opening to the atmosphere, and a supply / discharge port 44 b ′ to which the pipe 24 b extending from the control valve 9 ′ is connected, and the head side is formed in the cylinder body 41 ′. The closed cylindrical outer piston 50 is slidably fitted into the outer piston 50, and a ring-shaped stopper 42 'is provided at a substantially central portion in the axial direction of the outer piston 50. The outer piston 50 at the position of the stopper 42 'is provided with a hole 43 "communicating with the hole 43', and both ends of the outer piston 50 in the axial direction are formed with a hole 44a" communicating with the supply / discharge port 44a '. , A hole 44b ″ communicating with the supply / discharge port 44b ′, and further, in the outer piston 50, a flange portion 45a ′ that is cylindrical and extends to the inner edge of the end portion on the side opposite to the stopper 42 ′. , 45b 'having slidably fitted middle pistons 46a', 46b ', and an inner piston fitted to the end of the select shift rod 6 inside the middle pistons 46a', 46b '. 47 'is slidably fitted therein.

11 and 12, reference numeral 48c is a head side chamber of the select cylinder device 7 ', 48a' is an intermediate chamber of the select cylinder device 7 ', and 48b' is a rod side chamber of the select cylinder device 7 '.

In the case of the other embodiments shown in FIGS. 7 to 12, in the neutral state, the control shaft 15 of the control valve 9 ′ is controlled by the balance of the biasing forces of the springs 18 and 19 as shown in FIG. The change lever 1 is held at a position corresponding to the fifth and fifth speeds, and the change lever 1 is also held at a position corresponding to the fourth and fifth speeds as shown in FIG.

In this state, since the first, second and third valve seats 32a, 32b and 32c are opened by the first, second and third valve members 33a, 33b and 33c, the pressure source 8 The working fluid supplied from the pipe 22 via the suction port 23, the first suction chamber 27a, the first flow passage 30a, the first supply / discharge port 25a, and the pipe 24a is connected to the select cylinder shown in FIGS. The working fluid is supplied from the supply / discharge port 44a 'and the hole 44a "of the device 7'to the intermediate chamber 48a', and the working fluid is supplied to the suction port 23, the first suction chamber 27a, the hole 28, the second suction chamber 27b, and the second suction chamber 27b. It is supplied to the rod side chamber 48b 'from the supply / discharge port 44b' and the hole 44b "of the select cylinder device 7'shown in FIGS. 11 and 12 through the flow path 30b, the second supply / discharge port 25b, and the pipe 24b. Further, the working fluid supplied from the pressure source 8 through the pipe 22 ′ passes through the suction port 23 ′, the third suction chamber 27c, the third flow passage 30c, the third supply / discharge port 25c, and the pipe 24c. Via the supply / discharge port 44c of the select cylinder device 7'shown in FIGS. 11 and 12 to the head side chamber 48c, whereby the middle pistons 46a ', 46b are supplied as shown in FIGS. 11 and 12B. 'Is held at a position where it abuts against the stopper 42', the outer piston 50 is held at the rod-side stroke end, and the drive lever 49 fitted to the select shift rod 6 is moved to a position corresponding to 4th speed and 5th speed. Retained.

When the change lever 1 is selected from the above state to the second speed or the third speed side, the select link 2 swings upward and the control shaft 15 slides upward in FIG. The ball 35a of the member 33a is fitted into the annular groove 16, and the urging force of the spring 34a moves the first valve member 33a toward the control shaft 15 side so that the rod portion 38a retracts into the first flow passage 30a. The boot 32a closes the first flow path 30a by the biasing force of the spring 31a.

When the rod portion 38a is retracted into the first flow passage 30a and the first flow passage 30a is closed by the first valve seat 32a, the first valve seat 32a is closed by the first flow passage 30a. The flow hole 39a of the one valve member 33a is opened in the first flow path 30a, and the first supply / discharge port 25a is connected to the first discharge port 26a via the first flow path 30a, the flow hole 39a, and the first discharge chamber 29a. Through communication, the intermediate chamber 48a 'of the select cylinder device 7'is opened to the atmosphere.

When the intermediate chamber 48a 'of the select cylinder device 7'is opened to the atmosphere, the pressure of the working fluid in the rod side chamber 48b' causes the inner piston 47 'and the middle piston 46a as shown in FIG. 12 (C). 'Moves to the intermediate chamber 48a' side, the drive lever 49 fitted to the select shift rod 6 moves to the position corresponding to the second speed and the third speed, and the change lever 1 is shifted from this state. , The transmission can be switched to 2nd or 3rd speed.

When the change lever 1 is further reversely selected from the positions corresponding to the 2nd speed and the 3rd speed to the 1st speed side, the select link 2 swings further upward in FIG. 8 and the control shaft 15 also moves upward. Slide to the ball 35a of the first valve member 33a, and the ball 35c of the third valve member 33c also fits in the annular groove 16, and the third valve member 33c also controls the side of the control shaft 15 by the urging force of the spring 34c. And the rod portion 38c is retracted into the third flow passage 30c, and the third valve seat 32c closes the third flow passage 30c by the urging force of the spring 31c.

When the rod portion 38c is retracted into the third flow passage 30c and the third flow passage 32c is closed by the third flow passage 30c, the third valve seat 32c is closed until then. The third valve member 33c has a flow hole 39c opened in the third flow passage 30c, and the third supply / discharge port 25c is opened through the third flow passage 30c, the flow hole 39c, and the third discharge chamber 29c. The head side chamber 48c of the select cylinder device 7'is opened to the atmosphere by communicating with the discharge port 26c.

When the head side chamber 48c of the select cylinder device 7'is opened to the atmosphere, the pressure of the working fluid in the rod side chamber 48b 'causes the inner piston 47' and the middle piston 46a as shown in FIG. 12 (D). The outer piston 50 including ', 46b' moves to the head side chamber 48c side, and the drive lever 49 fitted to the select shift rod 6 moves to the position corresponding to the reverse and the first speed. By shifting the bar 1, the transmission is switched to reverse or first speed.

On the other hand, when the change lever 1 is selected from the position corresponding to the 4th and 5th speeds in the neutral state to the 6th speed side, the select link 2 swings downward in FIG. 15 slides downward, the ball 35b of the second valve member 33b fits in the annular groove 17, and the second valve member 33b moves toward the control shaft 15 side by the urging force of the spring 34b to move the rod portion 38b. b retracts into the second flow passage 30b, and the second valve seat 32b closes the second flow passage 30b by the urging force of the spring 31b.

When the rod portion 38b is retracted into the second flow passage 30b and the second flow passage 30b is closed by the second valve seat 32b, it is closed by the second valve seat 32b until then. The second valve member 33b has a flow hole 39b opened in the second flow path 30b, and the second supply / discharge port 25b is connected to the second flow path 30b, the flow hole 39b, and the second discharge chamber 29b. The rod side chamber 48b 'of the select cylinder device 7'is opened to the atmosphere by communicating with the discharge port 26b.

When the rod-side chamber 48b 'of the select cylinder device 7'is opened to the atmosphere, the pressure of the working fluid in the head-side chamber 48c and the intermediate chamber 48a' causes the outer chamber as shown in FIG. 12 (A). The piston 50 moves to the rod side chamber 48b 'side, the inner piston 47' and the middle piston 46b 'move to the rod side chamber 48b' side, and the drive lever 49 fitted to the select shift rod 6 corresponds to the sixth speed. The transmission is switched to the 6th speed by moving the change lever 1 from this state to a shift position and shifting operation of the change lever 1 from this state.

In this way, also in the embodiment shown in FIGS. 7 to 12, the control shaft 15 is held at the reference position by the balance of the biasing forces of the springs 18 and 19 in the control valve 9 ′, and the control valve 9 ′ is provided. Due to the stepwise movement of the balls 35a, 35b, 35c and the ball 20 with respect to the annular grooves 16 and 17 of the control shaft 15, the click feeling during the select operation can be clarified, and the pressure source 8 By driving the select cylinder device 7'by sliding the select shift rod 6 with the pressure of the working fluid from, it is possible to reduce the force required for the select operation, improving the operability and operating the system. It is possible to reduce the fatigue of the person.

The vehicle transmission control device of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention.

[0046]

[Effect of device]

 As described above, according to the vehicle transmission control device of the present invention, it is possible to reduce the force required for the select operation without impairing the sense of moderation during the select operation, improving operability and reducing driver fatigue. It is possible to achieve the excellent effect of being able to achieve

[Brief description of drawings]

FIG. 1 is an overall schematic perspective view of an embodiment of the present invention.

FIG. 2 is a side sectional view of the control valve shown in FIG.

3 is a sectional view taken along line III-III in FIG.

4 is a sectional view taken along line IV-IV in FIG.

5 is a cross-sectional view taken along line VV of FIG.

6 is a cross-sectional view corresponding to the VI-VI cross section of FIG. 5, and is a cross sectional view showing an operating state of the select cylinder device.

FIG. 7 is an overall perspective view of another embodiment of the present invention.

8 is a side sectional view of the control valve shown in FIG.

9 is a sectional view taken along line IX-IX in FIG.

10 is a sectional view taken along line XX of FIG.

11 is a sectional view taken along line XI-XI in FIG. 7.

12 is a sectional view corresponding to a section taken along line XII-XII in FIG. 11, and is a sectional view showing an operating state of the select cylinder device.

[Explanation of symbols]

 1 Change Lever 2 Select Link 3 Shift Link 4 Transmission Body 5 Upper Case 6 Select Shift Rod 7 Select Cylinder Device 7'Select Cylinder Device 8 Pressure Source 9 Control Valve 9'Control Valve 13 Valve Body 15 Control Shaft 23 Suction Port 23 'Suction Port 25a First supply / discharge port (supply / discharge port) 25b Second supply / discharge port (supply / discharge port) 25c Third supply / discharge port (supply / discharge port) 32a First valve seat (valve body) 32b Second valve seat (valve Body) 32c Third valve seat (valve body) 33a First valve member (valve body) 33b Second valve member (valve body) 33c Third valve member (valve body) 41 Cylinder body 41 'Cylinder body 46a Outer piston (piston) ) 46a 'Middlepis Ton (piston) 46b Outer piston (piston) 46b 'Middle piston (piston) 47 Inner piston (piston) 47' Inner piston (piston) 48a Head side chamber (cylinder chamber) 48a 'Intermediate chamber (cylinder chamber) 48b Rod side chamber (cylinder) Chamber) 48b 'Rod side chamber (cylinder chamber) 48c Head side chamber (cylinder chamber) 50 Outer piston (piston)

Claims (1)

[Scope of utility model registration request] 1. A select link provided in a driver's seat so as to be swingable in conjunction with a select operation of a change lever, and a shift link provided in a swingable manner in association with a shift operation of the change lever. A link, and a select shift rod provided in an upper case on the transmission body so as to be slidable in the axial direction in conjunction with the swing of the select link and twistable in conjunction with the swing of the shift link. A transmission control device for an automobile, comprising a cylinder body integrally provided with the upper case,
By having a piston slidably fitted in the cylinder body and connected to the select shift rod, and supplying and discharging a working fluid from a pressure source into a plurality of cylinder chambers partitioned by the pistons, A valve body having a select cylinder device for sliding the select shift rod to a desired select position, an intake port connected to the pressure source, and a supply / discharge port connected to a cylinder chamber of the select cylinder device. And a control shaft, one end of which is connected to the select link and slidably inserted into the valve body, and the intake port and the supply / discharge port can be communicated or blocked depending on the sliding position of the control shaft. And a valve body disposed inside the valve body, corresponding to the select position of the change lever. A transmission control device for an automobile, comprising: a control valve which is switched stepwise and supplies and discharges a working fluid from a pressure source into a desired cylinder chamber of the select cylinder device.