JPH09105461A - Speed change operation device for transmission - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform shift to manual speed change through mechanical linkage to improve back-up of a trouble of gear shift control of a controller and to prevent the occurrence of slide noise and impact noise of the mechanical linkage during ordinary operation, in a vehicle having a controller to perform electronic control of the gear shift of a transmission. SOLUTION: This speed change operation device for a transmission comprises mechanical speed change operation mechanisms 4a and 4b to transmit an operation force of manual speed change to the shift lever, not shown, of a transmission 1 and a select lever 14 from a driver's cab; and an emergency shift detecting means 40 to set a condition to shift to manual speed change by a mechanical speed change operation mechanism. When a shift condition is established, gear shift control by a controller 21 is stopped. Means 50 and 52 are provided to connect and disconnect interlocking between the linkages 4a and 4b of the mechanical speed change operation mechanism, the shift lever of the transmission 1, and the select lever 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an electronically controlled transmission operating device for a transmission.

[0002]

2. Description of the Related Art In order to realize a simple shift operation of a vehicle,
It is known that an air cylinder (actuator) for performing a gear shift of a transmission is provided and a shift timing is electronically controlled optimally by a microcomputer (Japanese Utility Model Publication No. Hei 6-37232). In such a transmission, a backup circuit is formed in the air circuit of the air cylinder in order to ensure backup in the event of a malfunction such as gear shift control of the microcomputer, and the shift circuit for backup and the operation in response to the shift request are actuated. A magnet valve is provided.

[0003]

However, there is a problem that the failure of the actuator cannot be backed up. The number of gears for backup is limited to the necessary minimum, and when trying to increase the number of gears, the structure of the shift switch and the magnet valve becomes complicated, resulting in a significant increase in cost.

The present invention aims to solve such problems.

[0005]

According to a first aspect of the present invention, a shift actuator that drives a shift lever of a transmission, a select actuator that also drives a select lever, and a switch unit that generates an electric signal for a shift request based on human operation. In a gear shift operation device including a controller that controls a shift actuator and a select actuator so as to perform a gear shift according to the generated signal, a mechanical transmission that transmits an operation force of a manual gear shift to a shift lever and a select lever of a transmission via a linkage. A gear shift operation mechanism, means for setting a condition for switching to a manual gear shift by a mechanical gear shift operation mechanism, and means for stopping the gear shift control of the controller when the condition is met.

According to a second aspect of the present invention, in the first aspect of the present invention, there is provided means for manually connecting / disconnecting the linkage of the mechanical speed change operation mechanism with the shift lever and the select lever of the transmission.

According to a third aspect of the present invention, in the first aspect, the linkage of the mechanical shift operating mechanism with the shift lever and the select lever of the transmission are normally disconnected, and when the condition for switching to the manual shift is satisfied, the linkage is established. A means for automatically switching to the state is provided.

According to a fourth aspect of the present invention, in the first aspect of the present invention, a mounting portion for a manual shifting operation lever is formed on the base end member of the linkage, and the switch unit is detachably mounted so as to cover the mounting portion. A means for detecting the removal of the switch unit is provided, and this detection is set as a condition for switching to the manual shift.

According to a fifth aspect of the present invention, in the first aspect, means for generating a command for switching to the manual shift is provided, and the generation of the command is set as a condition for switching to the manual shift.

According to a sixth aspect of the invention, there is provided a power shift device according to the first aspect, which boosts the input to the shift lever.

[0011]

According to the first aspect of the invention, normally, the controller controls the gear shift of the transmission through the shift actuator and the select actuator based on the shift operation of the switch unit. When the condition for switching to the manual shift is satisfied, the gear shift control of the controller is stopped, and the shift actuator and select actuator are in the free state, so the mechanical shift operation mechanism can be used to enable manual shift like an annual vehicle. Become.

According to the second aspect of the invention, the linkage of the mechanical gear shift operation mechanism is connected to the shift lever and the select lever of the transmission only when the condition for switching to the manual gear shift is satisfied, and the manual gear shift operation by the mechanical gear shift operation mechanism is performed. Will be possible. Normally, if the linkage is kept disconnected from the shift lever and the select lever, the mechanical shift operation mechanism is prevented from moving following the shift actuator or select actuator, and linkage sliding noise or impact noise is generated. Can be prevented. Since the linkage is not always connected, high durability is not required.

According to the third aspect of the present invention, the linkage is not manually interrupted, but when the condition for switching from the normally disconnected state to the manual shift is satisfied, the linkage is automatically switched to the linked state with the shift lever or the select lever. Can be switched. In other words, no manual labor is required to connect and disconnect the linkage, and it is possible to easily switch to the manual shift.

According to the fourth aspect of the present invention, when switching to the manual shift, the switch unit is removed after the operation lever is attached. Therefore, the detection of the removal is set as the condition for switching to the manual shift. Then,
It is possible to reliably determine switching to the manual shift.

According to the fifth aspect, it is possible to switch to the manual shift by a simple switch command operation.

According to the sixth aspect of the invention, since the power shift device works even when the shift actuator is in operation, not only the operating force for manual gear shifting can be reduced, but also the shift actuator can be downsized.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION In FIG. 1, a main drive shaft 20 of a transmission 1 is connected to an engine side via a clutch housing 30. A main shaft (not shown) of the transmission 1 projects toward the side opposite to the engine, and a propeller shaft (not shown) is connected to the projecting portion. A shift actuator 2 and a select actuator 3 are arranged on the transmission 1.

As a mechanical manual transmission mechanism, a lever shaft 4 is rotatably supported on the vehicle body side, and levers 5a and 5b are integrally provided on the outer periphery of the shaft 4 so as to project. One lever 5a
A known power shift device 8 is connected via a rod 7 to a shift actuator 2 via a rod 6. The power shift device 8 receives the movement of the lever 5a and boosts its input to drive a shift lever (not shown) of the transmission 1. The shift linkage 4a is connected to the other lever 5b.

Further, the shaft 15 is rotatably attached to the transmission 1 via the bracket 31, and the levers 10 and 11 are integrally provided on the outer periphery of the shaft 15 so as to project therefrom. A select lever 14 of the transmission 1 is connected to one lever 11 via a rod 12 and a select actuator 3 is connected to the lever 13 via a rod 13. A select linkage (not shown) is connected to the other lever 10.

As the shift tower 16 in the cab C, a switch unit 26 having a switch lever 27 is detachably attached to the pedestal portion 25 via a coupler 28 as shown in FIGS. A base end member 29 forming a part of the shift linkage 4a and the select linkage is housed inside the pedestal portion 25, and the base end member 29 is provided with a screw hole 29a for connecting an operation lever for manual shifting. An operation lever for manual shifting is always provided in the vehicle, and the lower end side of the lever 35 is at the base end member 29 as shown in FIG.
Is formed in the screw portion 35a that is screwed into the screw hole 29a.

The switch unit 26 is set in an h-shaped shift pattern as shown in FIG. 3. When the switch lever 27 is moved to the left front side, it is shifted up, and when it is moved backward, it is shifted down. If you move it, you will command neutral, and if you move it from the right side to the rear, you will command reverse.

In FIG. 1, the controller 21 controls the gear shift of the transmission 1. When a request for generation of the switch unit 26 is received, the shift actuator 2 and the select actuator 3 are driven to shift the transmission 1 to the required position. Control. 22 to 24 represent electric wiring.

The driving force of the select actuator 3 is transmitted to the lever 11 via the rod 13, and further the lever 1
1 is input to the select lever 14 via the rod 12. The driving force of the shift actuator 2 is transmitted to the lever 5a via the rod 6, is further input from the lever 5a to the power shift device 8 via the rod 7, and the output thereof operates the shift lever.

When the gear shift control of the controller 21 or the actuators 2, 3 and the switch unit 26 are out of order, the switch unit 26 is removed from the pedestal portion 25 of the shift tower 16, and the manual shift operation lever 35 is used to shift the shift linkage 4a and select. It will be attached to the proximal end member 29 of the linkage.

FIG. 7 is a block diagram showing how to deal with a failure. Emergency switching detecting means 40 for setting the conditions for switching to mechanical manual shifting is provided. In this example, when the removal of the switch unit 26 is detected, Generates a command to switch to mechanical manual shifting. When the controller 21 receives the switching command, the normal gear shift control is stopped.

As a result, the shift actuator 2 and the select actuator 3 are in a free state, and when the operating lever 35 attached to the shift linkage 4a and the base end member 29 of the select linkage is moved according to the shift pattern of the manual vehicle, the select operation is performed. Is transmitted from the select linkage to the lever 10, and is input to the select lever 14 of the transmission 1 via the shaft 15, the lever 11 and the rod 12.

The shift operation is transmitted from the shift linkage 4a to the lever 5b, input from the lever 5a via the shaft 4 to the power shift device 8 via the rod 7, and the output thereof operates the shift lever of the transmission 1. In this case, the power shift device 8 also works when the shift actuator 2 is driven, so that not only the operating force for mechanical manual shifting can be reduced, but also the shift actuator 2 can be made smaller and lighter, and thus cost can be reduced.

FIG. 8 shows a flowchart for explaining this corresponding processing. In step 1, the emergency switching detection means 40
On the basis of the above, it is determined whether or not it is a mechanical manual shift (whether or not the coupler 28 of the switch unit 26 is removed). If no, in step 2, the gear shift control by the controller 21 is continued, while y
If es, the gear shift control by the controller 21 is stopped in step 3.

9 and 10 show a modified example of the switch lever 27 of the switch unit 26. A lever 47 is provided on the armrest 46 of the driver's seat 45, and N and R buttons are arranged on both sides of the lever 47. To be done. The switch unit 26 shifts up when the lever 47 is raised, shifts down when the lever 47 is lowered, and is neutral when the N button is pressed.
When the R button is pressed, reverse commands are issued respectively.

Although not shown, if the switch unit 26 is constructed separately from the shift tower 16, the operation lever 35 for mechanical gear shifting operation is fixed in a state of being attached to the base end member 29 of the shift linkage 4a and the select linkage. It doesn't matter. In that case, the push button switch 48 for switching to the mechanical manual shifting is the armrest 46.
The emergency switching detecting means 40 is provided in the switch 48.
When is turned on, it is set to generate a command to switch to mechanical manual gear shifting.

By the way, in the embodiment of FIG. 1, when the shift actuator 2 and the select actuator 3 are operated by the gear shift control of the controller 21,
Along with this, the shift linkage 4a and the select linkage move together, so that a sliding sound and an impact sound of the linkage are generated. Further, since the gear shift is also normally performed, the linkage is required to have high durability.

FIG. 11 shows another embodiment provided with the countermeasure means. The same parts as those in the above embodiment are designated by the same reference numerals. The lever 5a is rotatably supported on the shaft 4,
The shift linkage 4 is attached to the lever 5b which rotates integrally with the shaft 4.
a is connected. A lock actuator 50a is fixed to the outer periphery of the shaft 4 as a connecting / disconnecting means 50 for connecting and disconnecting the levers 5a and 5b, and a lock hole 50b is formed in a lever 51 integrated with the lever 5a.

Also on the select side, the lever 11 has the shaft 1
The select linkage 4b is connected to a lever 10 which is rotatably supported on the shaft 5 and rotates integrally with the shaft 15. As means 52 for connecting and disconnecting between the levers 11 and 10,
The lock actuator 52a is fixed to the lever 10,
A lock hole 52b is formed in the lever 53 integral with the shaft 15.

The lock actuators 50a and 52a are
With a lock pin (not shown) and a solenoid as its driving means, when the solenoid is energized,
The lock pin projects and the lock hole 50 of the lever 51, 53
When the solenoid is de-energized while engaging with b and 52b, the lock pin retracts from the levers 51 and 53 to release the engagement with the lock holes 50b and 52b. 60, 61
Indicates electric wiring of the lock actuators 50a and 52a.

FIG. 12 is a block diagram showing a response to a failure such as gear shift control of the controller 21, which is provided with an emergency switch detecting means 40 for setting a condition for switching to mechanical manual shift, and the switch unit 26 is removed. When it detects "," it issues a command to switch to mechanical manual shifting. When the controller 21 receives the switching command, the normal gear shift control is stopped, and the linkage connecting / disconnecting means 50, 52 are locked by the lock actuator 5.
It is operated by turning on electricity to 0a and 52a.

As a result, the shift actuator 2 and the select actuator 3 become free, and the lock actuators 50a and 52a move to the levers 5a and 5b.
And between the levers 11 and 10, respectively.

When the operating lever 35 (see FIG. 6) attached to the base end members 29 (see FIG. 4) of the shift linkage 4a and the select linkage 4b is moved according to the shift pattern of the manual vehicle, the select operation is performed from the select linkage 4b. 10 to the rod 12 via the lock actuator 52a.
Is input to the select lever 14 of the transmission 1 via.

The shift operation is transmitted from the shift linkage 4a to the lever 5b, is input from the lever 5a to the power shift device 8 via the rod 7 via the lock actuator 50a, and the output thereof is a shift lever (not shown) of the transmission 1. ) Is activated.

FIG. 13 is a flow chart for explaining this corresponding processing. In step 1, whether or not to switch to mechanical manual shift based on the emergency switch detection means (whether normal mode by the gear shift control of the controller 21,
It is determined whether the emergency mode is due to mechanical manual shifting.

In the normal mode, the power supply to the lock actuators 50a and 52a is turned off in step 2 and step 3 to release the connection between the levers 5a and 5b and between the levers 11 and 10, and the gear shift control by the controller 21 is continued. . In the emergency mode, power is supplied to the lock actuators 50a and 52a in steps 4 and 5 to connect the levers 5a and 5b and the levers 11 and 10,
The gear shift control by the controller 21 is stopped.

As described above, the shift linkage 4a and the select linkage 4b are provided only during mechanical manual shifting.
Operates, and normally, even if a gear shift based on the control of the controller 21 is performed, the gears are disconnected from the shift actuator 2 side and the select actuator 3 side and do not operate together with these, so that a sliding noise or an impact noise of the linkage is generated. Occurrence can be avoided.

Since the linkages 4a and 4b do not follow the drive of the actuators 2 and 3, high durability is not required. Therefore, it is possible to use the linkage of the conventional manual vehicle as it is or to reduce the weight to some extent as needed.

As the emergency switching detecting means 40,
The shift tower 16 as shown in FIG. 14 may be provided with a push button switch 52, or as shown in FIG. 15, a push rod type switch 53 that is automatically turned on when the switch unit 26 of the shift tower 16 is separated from the pedestal portion 25. Further, as shown in FIG. 15, the switch unit 26 and the controller 21
The connector 51 is provided on the wiring connecting to the shift tower 1
When the switch unit 26 is removed from 6 and the connector 51 is separated, a command to switch to mechanical manual gear shifting may be generated.

Between levers 5a and 5b and between levers 11 and 1
Instead of providing the lock actuators 50a and 52a as the connecting / disconnecting means 50 and 52 between 0, a coupling tool such as a bolt and nut may be used to manually connect and disconnect.

[0045]

According to the first invention, a shift actuator for driving a shift lever of a transmission,
Similarly, a gear shift operation includes a select actuator that drives a select lever, a switch unit that generates an electric signal for a gear shift request based on human operation, and a controller that controls the shift actuator and the select actuator to shift gears according to the generated signal. In the device, a mechanical gear shift operation mechanism that transmits the manual shift operation force to the transmission shift lever and the select lever via the linkage, a means for setting the condition for switching to the manual gear shift by the mechanical gear shift operation mechanism, and this switching Since the means for stopping the gear shift control of the controller when the condition is satisfied is provided, when the gear shift control by the controller fails, the mechanical gear shift operation mechanism can be used to perform the manual gear shift like an annual vehicle.

According to the second aspect of the present invention, in the first aspect of the present invention, a mechanism for manually connecting and disconnecting the linkage of the mechanical gear shift operation mechanism and the shift lever and the select lever of the transmission is provided. The linkage of the mechanism is connected to the shift lever and the select lever of the transmission only when the condition for switching to the manual shift is satisfied, and normally the linkage of the shift lever and the select lever is cut to disconnect the shift actuator and the select actuator. It is possible to prevent the linkage from following and operating. Therefore, it is possible to prevent the sliding sound and impact sound of the linkage from being generated. Further, since the linkage is not always connected, high durability is not required and the conventional linkage can be used as it is.

According to the third aspect of the present invention, in the first aspect, the linkage between the mechanical gear shift operating mechanism and the shift lever and the select lever of the transmission are normally disconnected, and the condition for switching to the manual gear shift is satisfied. Then, since means for automatically switching to the interlocked state is provided, it is possible to easily switch to mechanical manual gear shifting because no manual labor is required to connect and disconnect the linkage.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the base end member of the linkage is formed with a mounting portion for a manual shift operation lever, and the switch unit is detachably mounted so as to cover the mounting portion. On the other hand, since a means for detecting the removal of the switch unit was provided and this detection was set as a condition for switching to the manual gear shift, when switching to the manual gear shift, it is necessary to remove the switch unit to retrofit the operation lever. Therefore, by detecting the removal, it is possible to accurately determine the switch to the mechanical manual shift.

According to a fifth aspect of the invention, in the first aspect of the invention, means for generating a command to switch to a manual shift is provided.
Since the generation of the command is set as the condition for switching to the manual shift, the switch to the manual shift can be easily performed regardless of the mounting structure of the switch unit.

According to the sixth invention, in the first invention, since the power shift device for boosting the input to the shift lever is provided, the power shift device operates even when the shift actuator is operated, so that the manual shift is performed. Not only can the operating force be reduced, but the shift actuator can be made smaller and lighter.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.

FIG. 2 is also a perspective view of the shift tower.

FIG. 3 is a shift pattern diagram of the same.

FIG. 4 is a partial perspective view of the shift tower.

FIG. 5 is a partial perspective view of the shift tower.

FIG. 6 is a perspective view of an operating lever for manual shift of the same.

FIG. 7 is a block diagram for explaining how to deal with a failure.

FIG. 8 is a flowchart for explaining the details of processing for dealing with a failure.

FIG. 9 is a perspective view of a driver's seat showing a modified example of the switch lever of the switch unit.

FIG. 10 is a perspective view showing an enlarged main part of the same.

FIG. 11 is an overall configuration diagram showing another embodiment.

FIG. 12 is a block diagram for explaining how to deal with a failure.

FIG. 13 is a flowchart for explaining the processing content of the failure handling.

FIG. 14 is a perspective view of a shift tower showing another correspondence of the emergency switching detecting means.

FIG. 15 is a perspective view of a shift tower similarly showing another correspondence.

FIG. 16 is a perspective view of a shift tower similarly showing another correspondence.

[Explanation of symbols]

 1 Transmission 2 Shift Actuator 3 Select Actuator 4,15 Lever Shaft 5a, 5b, 10,11 Lever 6,7, 12,13 Rod 8 Power Shift Device 14 Transmission Select Lever 16 Shift Tower 21 Controller 25 Shift Tower Pedestal 26 Shift tower switch unit 28 Turnip 29 Linkage base end member 29a Screw hole 35 Manual shift operation lever 35a Screw part 40 Emergency switching detection means 50, 52 Linkage disconnection means 50a, 52a Lock actuator 50b, 52b Lock hole 51 Connector 52 Push Button switch

Claims (6)

[Claims] 1. A shift actuator for driving a shift lever of a transmission, a select actuator for driving a select lever, a switch unit for generating an electric signal of a gear shift request based on a gear shift operation, and a gear shift according to the generated signal. In a gear shift operation device including a controller for controlling a shift actuator and a select actuator, a mechanical gear shift operation mechanism for transmitting an operation force of manual gear shift to a shift lever and a select lever of a transmission via a linkage, and a mechanical gear shift operation mechanism. A gear shift operation device for a transmission, comprising means for setting a condition for switching to a manual gear shift by means of, and means for stopping a gear shift control of a controller when the switch condition is satisfied. 2. The gear shift operating device according to claim 1, further comprising means for manually connecting and disconnecting the linkage of the mechanical gear shift operating mechanism with the shift lever and the select lever of the transmission. 3. A means for automatically disconnecting the linkage between the mechanical shift operating mechanism and the shift lever and select lever of the transmission during normal operation, and automatically switching to the linked state when the condition for switching to the manual shift is satisfied. The gear shift operation device according to claim 1, wherein 4. A base end member of the linkage is provided with a mounting portion for an operating lever for manual shifting, the switch unit is detachably mounted so as to cover the mounting portion, and means for detecting removal of the switch unit is provided. The shift operation device according to claim 1, wherein the detection is set as a condition for switching to a manual shift. 5. The gear shift operation device according to claim 1, further comprising means for generating a command for switching to the manual gear shift, and the generation of the command is set as a condition for switching to the manual gear shift. 6. The gear shift operating device according to claim 6, further comprising a power shift device for boosting an input to the shift lever.