JPH0545892Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an electronically controlled transmission for a vehicle in which a gear shifting operation is performed by an electric circuit and a hydraulic or pneumatic fluid circuit. More specifically, the present invention relates to an emergency operation device for an electronically controlled vehicle transmission that manually shifts the shift lever of the transmission when both the electric circuit and the fluid circuit fail.

[Prior Art] Conventionally, this type of electronically controlled transmission has a change lever for performing a gear shift operation of the transmission, a lever position sensor that detects the shift operation position of the change lever, and a lever position sensor that detects the gear position of the transmission. a gear position sensor that detects the vehicle speed; a vehicle speed sensor that detects the vehicle speed; a clutch sensor that detects whether the clutch is engaged or disconnected; a shift actuator that drives the shift lever of the transmission in the shift direction; and a shift actuator that drives the shift lever in the select direction. and a main controller that controls both actuators to shift the transmission to a desired gear position based on the outputs of the four sensors.

This transmission is equipped with an emergency control device that, in the unlikely event that the transmission breaks down for some reason, stops the vehicle and moves it to a safe place.
This emergency control device is composed of an emergency switch for changing the gear position of the transmission to first gear or reverse gear, and an emergency controller for prohibiting the control of the main controller by the switching output of the emergency switch and controlling both actuators so that the gear position is forcibly shifted to first gear or reverse gear regardless of the position of the change lever. When the transmission breaks down and the emergency switch is switched to the first gear side (or reverse gear side), the shift actuator and select actuator operate for a preset time (for example, 2 seconds) to shift the gear position to first gear (or reverse gear).

If the vehicle cannot be driven even with this emergency control device, the floor plate above the transmission and the transmission cover are removed, an emergency tool is attached to the select shaft, and the shift lever is manually moved.

[Problems that the invention aims to solve] However, with the conventional method, it takes a lot of effort to attach and remove emergency tools, and it is difficult to operate the shift lever by crawling under the floor. Moreover, there was a problem that foreign matter could get into the transmission when the cover was removed.

To solve this problem, we developed a push pull between the vehicle driver's seat and the transmission select shaft.
It is conceivable to wire a cable and push and pull the cable to connect the select shaft and the cable in an emergency to directly move the shift lever. This method allows you to easily move the shift lever by remote control from the driver's seat without having to go to the transmission, but when the transmission is repaired and the emergency condition is released, the cable and select shaft must be connected. In order to solve the problem, it was necessary to remove the floorboard etc. above the transmission.

The purpose of this invention is to allow the emergency handle to be attached to the select shaft with little effort without removing the floor plate above the transmission or the cover of the transmission, and to easily move the shift lever of the transmission directly.
Moreover, it is an object of the present invention to provide an emergency operation device for an electronically controlled transmission for a vehicle that can easily release the emergency state.

[Means for Solving the Problems] In order to achieve the above object, the configuration of the present invention will be explained using FIGS. 1 to 3.

In the present invention, fluid pressure is supplied via the shift solenoid valves 12 and 13, and the shift actuator 9 drives the shift lever 1a in the shift direction, and the fluid pressure is supplied via the select solenoid valves 15, 16, 17. a select actuator 10 that drives the shift lever 1a in the select direction using fluid pressure; and a shift solenoid valve 12, 13 depending on the driving conditions of the vehicle.
Or an electronically controlled transmission for a vehicle, comprising a main controller 8 that opens and closes at least one of the select solenoid valves 15, 16, and 17 to control either or both of the shift actuator 9 and the select actuator 10. This is an improvement.

Its characteristic configuration includes a normally closed manual switch 25 which is provided in the middle of the power supply line 24 of the main controller 8 and which, when opened, prohibits the operation of the shift actuator 9 and the select actuator 10; It is provided to protrude from the cover 28 of the transmission 1, and the protruding end 27a is provided with a screw 2 in the axial direction.
The select shaft 27 is fitted with the protruding end 27a of the select shaft 27 so as to rotate together with the shaft 27, and in the fitted state, the through hole 36 facing the screw 29 is aligned with the axis. an emergency handle 33 provided in the direction; having approximately the same length as the emergency handle 33;
The connecting rod 37 is provided with a screw 38 at one end which passes through the through hole 36 loosely, and has a screw 38 screwed into the screw 29 at one end, and a screw tightening means 41 having an outer diameter larger than the through hole 36 at the other end.

[Operation] If the vehicle cannot be driven even with the emergency control device, the manual switch 25 is opened to prohibit the operation of the shift actuator 9 and the select actuator 10. Next, the emergency handle 33 is fitted onto the protruding end 27a of the select shaft 27, and the screw 3 at the tip is tightened by the screw tightening means 41 of the connecting rod 37.
8 is screwed onto the screw 29 of the protruding end 27a. As a result, the emergency handle 33 is connected to the select shaft 27.
By pushing and pulling the handle 33, the shift lever 1a can be moved to a desired selection position, and by rotating the handle 33, the shift lever 1a can be moved in the shift direction.

By loosening the screw tightening means 41, the emergency handle 33 can be easily removed from the select shaft 27.

[Example] Next, an example of the present invention will be described in detail with reference to the drawings.

As shown in FIGS. 1 and 2, there is a change lever 2 in the driver's seat for operating the transmission 1.
and a clutch pedal 3 are provided. A lever position sensor 4 is provided at the base end of the change lever 2 to detect the shift operation position of this lever, and a clutch sensor 5 is provided near the clutch pedal 3 to detect depression of the pedal 3. Also provided within the transmission 1 are a gear position sensor 6 that detects the shifted gear position and a vehicle speed sensor 7 that detects the vehicle speed. The outputs of these sensors 4-7 are connected to a main controller 8 consisting of a microcomputer. The control output of this main controller 8 includes a shift actuator 9 and a select actuator 1.
0 is connected.

The shift actuator 9 is a shift cylinder 11
and shift solenoid valves 12 and 13, and the select actuator 10 is connected to the select cylinder 1.
4 and select solenoid valves 15, 16, 17, (second
(Figure). In FIG. 1, only the solenoid valve 15 is shown. High pressure air from an air tank 45 is supplied to the shift solenoid valves 12, 13 and the select solenoid valves 15, 16, 17 via a pressure reducing valve 44, respectively. Shift actuator 9 is shift solenoid valve 1
The shift cylinder 11 is actuated by the air pressure supplied through 2 and 13, and the shift lever 1a is activated.
(Fig. 3) in the shift direction, the select actuator 10 operates the select solenoid valves 15, 16,
The select cylinder 14 is actuated by the air pressure supplied through the select cylinder 17 to drive the shift lever 1a in the select direction.

The transmission 1 includes a shift unit 19 that moves the shift lever 1a in the shift direction by a shift actuator 9, and moves the shift lever 1a in the select direction by a select actuator 10.
is provided.

That is, when the select solenoid valve 15 opens, the shift unit 19 moves the shift lever 1a to the first gear and reverse gear select positions (positions indicated by dots in FIG. 5) by the operation of the select cylinder 14, and selects the select position. When the solenoid valve 16 opens, the select cylinder 1
4, the shift lever 1a is shifted to 2nd gear and 3rd gear.
When the gear is moved to the select position (the position indicated by the dot in the figure) and the select solenoid valve 17 is opened, the shift lever 1a is moved to 4 by the operation of the select cylinder 14.
It moves to the gear and fifth gear select positions (positions indicated by dots in the figure).

The shift unit 19 also includes a shift solenoid valve 1.
2 opens, the shift cylinder 11 operates to move the shift lever 1a to the 1st, 3rd, or 5th gear position of the shift pattern shown in FIG. 11 moves the shift lever 1a to the reverse gear, second gear, or fourth gear position, and when both the shift solenoid valves 12 and 13 open, the shift lever 1a moves to the neutral position.

As shown in FIGS. 1 and 2, the main controller 8 controls at least one of the shift solenoid valves 12, 13 or the select solenoid valves 15, 16, 17 based on the outputs of the four sensors 4 to 7. The actuators 9 and 10 are opened and closed to control either or both of the actuators 9 and 10, thereby shifting the shift lever 1a of the transmission 1 to a desired gear position.

In addition, there is an emergency switch 20 installed in the driver's seat.
are the 1st speed switching contact 20a and the reverse switching contact 20b.
and an off contact 20c, and these contacts 20a
and 20b are connected to the emergency controller 21. The control output of the emergency controller 21 is connected to the shift solenoid valves 12 and 13, the select solenoid valve 15, and the emergency display 22 described above. The power source of the main controller 8 is connected via a power supply line 24, an emergency controller 21, and its power output terminal 23.

Emergency switch 2 of the emergency control device with the above configuration
For example, when switching 0 to the 1st speed switching contact 20a,
The output voltage of the terminal 23 of the emergency controller 21 is set to a low level, the power supply to the main controller 8 is cut off, and control of the main controller 8 is prohibited. At the same time, irrespective of the position of the change lever 2, the shift solenoid valves 12 and 13 are forcibly opened to operate the shift cylinder 11, and the shift lever 1a of the transmission 1 is placed in the neutral state (the state shown in Fig. 5). The display 22 is turned on. Next, open the select solenoid valve 15 and select the select cylinder 14.
is activated, and the gear position of the transmission 1 is brought into the selected state of 1st speed and reverse speed (the state shown by the dots in FIG. 5). Subsequently, the emergency controller 21 closes the shift solenoid valve 13 and continues to open the shift solenoid valve 12. As a result, the shift cylinder 11 is operated and the gear position is shifted to the first speed.

The characteristic configuration of this embodiment will be described next.

First, as shown in FIG. 2, a normally closed manual switch 25 is provided in the middle of the power supply line 24 of the main controller 8 and the emergency controller 21. Further, as shown in FIG. 3, a select shaft 27 on the gear position sensor 6 side of the transmission 1 is provided to protrude from a cover 28 of the transmission 1. This select shaft 27 is arranged in the select direction of the shift lever 1a. As shown in FIG. 4, an internal thread 29 is provided in the center of the cylindrical projecting end 27a of the shaft 27 in the axial direction, and a rectangular square hole 30 is formed around the internal thread 29. A seal 28 is provided between the cover 28 and the protruding end 27a to prevent dust from entering.
a is provided. A shift lever 1a is fixed to the select shaft 27.

At least this protruding end 27 from the outer panel 31 of the vehicle
T-shaped emergency handle 3 having a length up to a
The tip of No. 3 fits into the protruding end 27a. Handle 3
3 has a protruding end 27 deeper than the square hole 30.
A circular hole 34 having an inner diameter slightly larger than the outer diameter of a is provided. The circumference of the circular hole 34 is tapered,
A bulge 35 that can be inserted into the square hole 30 is formed at the bottom of the circular hole 34 . The outer shape of this bulging portion 35 is a rectangular shape corresponding to the inner shape of the square hole 30.
A through hole 36 is provided in the center of the emergency handle 33 in the axial direction. This through hole 36 has a connecting rod 3.
7 is loose. The connecting rod 37 is the emergency handle 33
A male thread 38 is provided at one end to be screwed into the female thread 29. The other end of the connecting rod 37 is provided with a flange 40 having an outer diameter larger than that of the through hole 36 and a small handle 41. In FIG. 1, 42 is a lid for inserting an emergency handle provided on the outer plate 31, and 43 is a change lever reaction force solenoid valve.

Next, the characteristic operation of this embodiment will be explained. If the transmission 1 cannot be driven even by the emergency control device, the manual switch 25 is opened to cut off the power supply to the main controller 8 and the emergency controller 21, and the control of the controllers 8 and 21 is prohibited.

Next, open the lid 42 of the outer panel 31 and insert the tip of the emergency handle 33 into the protruding end 2 of the select shaft 27.
7a. The protruding end 27a is easily accommodated in the circular hole 34 due to the taper attached to the periphery of the circular hole 34. Due to this fitting, the bulging portion 35 at the tip of the emergency handle 33 is connected to the protruding end 27 of the select shaft 27.
Insert into the square hole 30 of a.

Furthermore, by inserting the connecting rod 37 into the through hole 36 of the emergency handle 33, and turning the male screw 38 at one end by hand to the small handle 41 at the other end, the female screw 29
and connect the connecting rod 37 to the select shaft 27.
Tighten. This causes the flange 40 of the connecting rod 37 to connect the emergency handle 33 to the select shaft 2.
7, and the emergency handle 33 is connected to the select shaft 27. Even if the handle 33 is rotated by grasping the grip 33a of the handle 33, the male screw 38 will not loosen due to the square hole 30 and the bulge 35.
The handle 33 never spins idly. As shown by arrow B in FIG. 3, by rotating the handle 33, the shift lever 1a can be moved in the shift direction to bring the gear position to the neutral state.

Even if the handle 33 is then pulled, the screws 29 and 38 are engaged so that the handle 33 will not come off the shaft 27. As shown by arrow C in FIG. 3, the shift lever 1a can be moved to the select position or in FIG. 5 by pushing or pulling the handle 33. For example, after moving the shift lever 1a to the select position, the user turns the handle 33 to shift to the second gear, and in this state, the user can move to a safe location.

When the repair is completed, the small handle 41 is reversed, the male screw 38 is loosened, and the emergency handle 33 is removed from the select shaft 27.

In addition, in the above example, a square hole 30 is provided in the protruding end 27a of the select shaft 27, and the emergency handle 33
Although an example has been shown in which the bulging portion 35 is provided at the tip of the handle 33, the present invention is not limited to this, and the protruding end 27a may be provided with a bulging portion and the tip of the handle 33 may be provided with a square hole.
Further, the square hole is not limited to a quadrangular shape, but may have another square shape, and is not limited to a square hole, but may be an elliptical hole or the like.

Further, although an example has been shown in which the protruding end 27a is provided with the female thread 29 and the one end of the connecting rod 37 is provided with the male thread 38, the protruding end 27a may be provided with a male thread and the one end of the connecting rod 37 may be provided with a female thread.

Further, although an example has been shown in which the small handle 41 is provided at the other end of the connecting rod 37, the other end may be shaped like the head of a bolt or screw, and the connecting rod 37 may be tightened with a tool.

Further, the shape of the emergency handle is not limited to the T-shape, but may be other shapes such as an L-shape. If the length of the emergency handle becomes long, a support frame or the like may be provided on the vehicle body to support the handle halfway.

Further, the electronically controlled transmission of the present invention is not limited to pneumatic control but may be hydraulically controlled, and can also be applied to an electronically controlled mechanical automatic transmission including a mechanical clutch that is pneumatically or hydraulically controlled.

[Effects of the invention] As described above, when the transmission is unable to run even with the emergency control device, the select shaft can be set in emergency mode with little effort without removing the floor plate above the transmission and the cover of the transmission. By attaching a handle, you can directly move the shift lever of the transmission.

In particular, the emergency operating device of the present invention allows the shift lever to be operated in a comfortable position using the ground as a foothold outside the vehicle, and the operating force is also reduced. If a scale is engraved on the base end of the emergency handle, the current select position of the shift lever can be easily determined from the position of the scale with respect to the outer panel.

Further, by loosening the screw tightening means, the emergency handle can be easily removed and restored to its original state.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an electronically controlled transmission including an emergency operating device according to an embodiment of the present invention. Figure 2 is a diagram showing the electrical circuit configuration. FIG. 3 is a configuration diagram of an emergency operating device according to an embodiment of the present invention. Figure 4 is a cross-sectional view taken along line AA in Figure 3. Fifth
The figure is a shift pattern diagram of an electronically controlled transmission. 1...Transmission, 1a...Shift lever, 8...
Main controller, 9...shift actuator,
10...Select actuator, 12, 13...
... Solenoid valve for shift, 15, 16, 17 ... Solenoid valve for selection, 24 ... Power supply line, 25 ... Manual switch, 27 ... Select shaft, 27
a...Protruding end of select shaft, 28...Transmission cover, 29, 38...Screw, 33...Emergency handle, 36...Through hole, 37...Connection rod,
41...Small handle (screw tightening means).

Claims (1)

[Claims for Utility Model Registration] A shift actuator 9 that drives the shift lever 1a in the shift direction by fluid pressure supplied through the shift solenoid valves 12 and 13, and select solenoid valves 15, 16, and 17. a select actuator 1 that drives the shift lever 1a in the select direction by fluid pressure supplied through the select actuator 1;
0 and the above-mentioned shift solenoid valve 1 according to the driving conditions of the vehicle.
2, 13 or select solenoid valve 15, 16, 17
A vehicle electronically controlled transmission comprising: a main controller 8 that controls either or both of the shift actuator 9 and the select actuator 10 by opening and closing at least one of the main controller 8; The shift actuator 9 and the select actuator 1 are provided in the middle of the line 24, and when opened, the shift actuator 9 and the select actuator 1
Normally closed manual switch 25 that prohibits the operation of 0
and; a select shaft 27 that is provided to protrude from the cover 28 of the transmission 1 and has a screw 29 provided in the axial direction on the protruding end 27a; A through hole 3 connected to rotate together and facing the screw 29 in a fitted state.
Emergency handle 33 with 6 provided in the axial direction
It has approximately the same length as this emergency handle 33, passes through the through hole 36 loosely, and has the screw 2 at one end.
9 is provided with a screw 38 which is screwed into the screw tightening means 4 having an outer diameter larger than the through hole 36 at the other end.
1. An emergency operating device for an electronically controlled transmission for a vehicle, characterized in that the connecting rod 37 is provided with a connecting rod 1.