JPH0639165Y2 - Finger touch control transmission control device - Google Patents

Description

[Detailed Description of the Invention] The present invention allows a driver to switch a manual operation member.
The present invention relates to a finger touch control transmission control device that issues a shift signal and switches the meshing mode of the transmission based on the shift signal.

Conventionally, the driver manually switches the change lever unit, the control box processes the obtained shift signal, outputs a predetermined operation signal to the gear shift unit, and the gear shift unit uses a booster in which air pressure operates. BACKGROUND ART There is known a gear shift unit for so-called finger touch control, in which a transmission is operated in a switching manner, and one example thereof is disclosed in Japanese Utility Model Publication Nos. 57-144735 and 59-43744. This type of device can reduce fatigue caused by the driver's gear shift operation because the switching operation force during gear shift is reduced. In addition, the clutch connection / disconnection operation is performed by the driver himself / herself, so that the transmission control device can be made to have a relatively easy structure.

However, when a conventional control device of this type receives a clutch disconnection signal and a shift signal, it applies a reaction force to the manually operated member and shifts the gear position switching means so that the gear position is adjusted to a target gear position. However, when the reaction force application is released at the completion of the gear shift operation, the gear shift operation force applied to the manual operation member is released.

For this reason, the driver will continue to operate the manual operation member and operate the gear position switching means forever if the gear shift is not smoothly performed due to aging of the device or the like. It will be impossible to achieve,
Eventually, there is a problem that it causes a serious failure and requires a large repair cost.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a finger touch control transmission control device capable of issuing a warning when a shift to a shift stage fails and causing a serious failure.

FIG. 1 is an overall configuration diagram for clearly showing the configuration of the present invention. In the present invention, the clutch switch 2 outputs an engagement / disengagement signal of the clutch 1 of the vehicle, and the gear selection signal corresponding to the target gear is output by the gear selection switch 4 according to the switching operation of the manual operation member 3 by the driver. The gear position sensor 6 outputs a gear position signal corresponding to the gear position of the transmission 5 of the vehicle,
The gear position switching means 8 switches the meshing mode of the transmission 5 to the target shift speed based on the shift signal, and the reaction force applying means (second
(See reference numeral 30 in the figure) applies an operation reaction force to the manual operation member 3, and when the clutch disconnection signal and the shift signal are received, the switching control means 9 operates the reaction force application means to operate the manual operation member 3. The gear position switching means 8 is operated to shift the gear position of the transmission 5 so as to match the gear position of the transmission 5 with the target reaction gear, and the output of the gear position sensor 6 completes the shift operation. Upon detection, the operation of the reaction force application means is released, and in particular, when the switching control means 9 does not detect the completion of the gear shifting operation even after the maximum reference set time Tm has elapsed after the operation of the gear position switching means 8 was started. It is provided with a means (see s41 in FIG. 4B) for activating the alarm means (see reference numeral 42 in FIG. 2).

FIG. 2 shows a finger control control transmission control device (hereinafter simply referred to as a mission control device) as one embodiment of the present invention. This device is mounted over a diesel engine (hereinafter simply referred to as an engine) 10 and a transmission 12 that receives the rotational force of the diesel engine 10 via a clutch 11. In the clutch 11, the flywheel 13 is brought into pressure contact with the clutch plate 14 by well-known sandwiching means (not shown),
Rotating force on the engine 10 side is transmitted to the transmission 12 side intermittently. In this clutch, a cylinder 17 receives pressure oil from a hydraulic piston 16 operated by a clutch pedal 15, and a rod 18 connected to the cylinder 17 engages and disengages the clutch 11. A clutch sensor 19 is mounted on the cylinder 17 and operates as a hydraulic pressure sensor that detects the on / off state of the clutch 11 by turning it on and off.

The transmission 12 moves forward 7 in the shift pattern shown in FIG.
It is possible to secure the meshing mode of one step backward. In order to switch the meshing mode of the gears in the transmission 12 to the gear position corresponding to each of these shift stages, a gear shift unit 20 as a gear position switching means is attached to the transmission 12, and this gear shift unit has an operation signal Is connected to a control unit 21 serving as a switching control means for providing a gear shift selector switch 22 (hereinafter simply referred to as a gear shift switch) that is connected to the control unit 21. The gear shift unit 20 sequentially switches the gear train to a gear position that is a combination of the select positions P1, P2, P3, P4 in the select direction, one neutral position (Q2) in the shift direction, and two shift positions Q1, Q3. The gears are arranged and operated so that the transmission 12 holds a predetermined gear. That is,
The gear shift unit 20 includes a plurality of electromagnetic valves (only one of which is shown) 23 operated by an operation signal from the control unit 21 and a transmission (not shown) by receiving high-pressure operating air from an air tank 26 via these valves. It has a power cylinder that activates the select fork,
The power valve (not shown) is operated by the electromagnetic valve 23 that receives the operation signal, and the gear position of the transmission 12 is changed in the order of the select direction and the shift direction. An air circuit is formed so that high-pressure air is transmitted to the shift electromagnetic valve of the electromagnetic valve 23 after passing through the throttle electromagnetic valve 46, and when the solenoid valve 46 is off, there is no throttle action. In the ON state, the diaphragm action works.
Further, a gear position sensor 24 that outputs a gear position signal corresponding to the gear position when the gear train is completely aligned in a predetermined gear position is mounted in the gear shift unit 20. Furthermore,
A transmission L joint (not shown) that transmits the rotation of the output shaft is connected to a speedometer cable (not shown) on the output shaft side of the transmission 12, and a vehicle speed signal that is a pulse signal is output to the control unit 21 at this portion. The sensor 25 is attached. The speed change switch 22 operates a change lever 27 as a manual operation member to perform a switching operation according to a shift pattern shown in FIG. 3, and switches a select switch 28 and a shift switch 29 which are interlocked with the change lever, and the select switch 28 has. One of the four switching contacts (the positions corresponding to these contacts are shown as P1, P2, P3, P4 in FIG. 3) and the three switching contacts of the shift switch 29 (the positions corresponding to this contact are shown in FIG. 3). By closing one of each of Q1, Q2, and Q3), the select and shift signals (in the table below
Shown as P1 ', P2', P3 ', P4' and Q1 ', Q2', Q3 ')
And are output to the control unit 21 as a shift signal. A lever reaction force generator 30 is attached to the speed change switch 22 for applying a reaction force to the driver when the change lever 27 moves in the shift direction. The lever reaction force generator 30 supplies and discharges the working air from the air tank 26 to the air cylinder 31 via a reaction force electromagnetic valve 32 as a three-way valve, and uses this air pressure to apply an operation reaction force to the change lever 27. I'm giving. The electromagnetic valve 32 is connected to the control unit 21. Further, a brake sensor 35 that outputs an ON signal to the control unit 21 when the brake is operated is attached to the brake pedal 34 of the vehicle.
This vehicle is equipped with an air brake, and an air tank 26 which is an air source thereof is provided with a brake abnormality sensor 36 which outputs an ON signal to the control unit 21 when the air pressure falls below a specified value.

The control unit 21 includes a make-up processor (hereinafter simply referred to as CPU) 37, a memory 38, an interface 39 as an input / output signal processing circuit, and the like. The input / output port 40 on the interface 39 is connected to the speed change switch 22,
Gear position sensor 24, vehicle speed sensor 25, clutch sensor 19,
Each output signal is input from the brake abnormality sensor 35. On the other hand, the output port 41 is connected to the plurality of electromagnetic valves 23, the reaction force electromagnetic valve 32, and the throttle electromagnetic valve 46. Furthermore,
The output port 41 includes an abnormality display lamp 42 as an alarm means for alarming an abnormality when the gear meshing mode is abnormal as described later, a neutral lamp 43 that lights up when the gear position is in neutral, and before the gear shift operation. The gear position is not on neutral, that is, it is connected to a buser 44 which warns when any gear position is set. The memory 38 is composed of a ROM (read-only memory) in which a program and data shown in the flow chart of FIG. 4 are written and a read / write RAM. That is, a program for gear shift control is stored in the ROM. In addition to this, select signals P1 ', P2', P3 ', P4' as shift signals and shift signal Q
A data table for reading the gears corresponding to this from 1 ', Q2', Q3 '(an example of the correspondence is shown in the table below),
A data table for reading the shift-down allowable difference vehicle speed Vi allowed for each shift stage is stored. In the table below, the subscript i corresponding to the gear and the neutral position (here, the gear is input / output to / from a memory or the like as a binarized signal, but is an abbreviation indicating the signal).

It should be noted that, here, when the target shift speed, which is a new shift speed desired by the driver, is determined from the select signal and the shift signal, an operation signal corresponding to this target shift speed is output to each electromagnetic valve 23 via a drive circuit (not shown). Is controlled to
As a result, the gear position of the transmission 12 is aligned with the target shift speed.

The operation of the mission control device will now be described with reference to FIG. When the program starts, it is first confirmed that the main switch 45 is turned on in step 1 (hereinafter, step is referred to as S in the figure), and the process proceeds to step 2.
Here, the gear stage corresponding to the current gear position of the transmission 12 is examined from the signal stored in the memory M, and it is determined whether or not this is neutral, that is, M is 8, 9, 10, 11 (M ≧ 8). , YES turns on the neutral lamp 43, and NO turns on the buzzer 44 (steps 2, 3 and 4). After the above processing, step 5 is entered. Here, it is determined whether or not the clutch sensor 19 is on, that is, whether or not the clutch is disengaged. If NO, the following process is stopped, and if YES, the subsequent gear change operation of the change lever 27 is allowed, and the gear change switch 22 The target gear position as the new gear position Ci desired by the driver is read from the signal, and the target gear position is stored in the lever memory C for storing the gear position designated by the change lever 27 (step 6). Next, it is judged whether or not the target gear position stored in the lever memory C is neutral, that is, C ≧ 8 (step 7), and YE
If S, go to step 8; if NO, go to step 9. In the neutral stage, that is, when the reaction force electromagnetic valve 32 is on, the reaction force electromagnetic valve 32 is held as it is, and the reaction force electromagnetic valve 32 is turned on to apply an operation reaction force to the change lever 27 (step 5).
0), then output to a predetermined shift electromagnetic valve 46 in each electromagnetic valve 32 of the gear shift unit so as to hold the shift member in the gear shift unit (not shown) at the Q2 position (on the neutral line) in the shift direction. Control (step 10). Next, it is determined whether or not the elapsed time T after the generation of the signal to the electromagnetic valve 23 has passed the reference set time Td, and if the time is NO, the time has passed, and after that, the process proceeds to YES (step 11). In step 12, the shift electromagnetic valve 23 turned on in step 8 is turned off. Thereafter, whether the clutch sensor 19 is on (clutch stage) and a switching operation signal that can be considered to be switching operation when the select signal and the shift signal are input is input, that is,
Determine whether the change lever 27 is currently changing,
If YES, the process returns to NO, and if NO, the process proceeds to step 14 (step 13.) Here, the output is selectively output to the select solenoid valve based on the target shift stage of the solenoid valve 23, and corresponds to the target shift stage on the neutral line Q2. A select member (not shown) is operated to a position on the select line and is controlled to be held. After that, the gear position is judged from the signal of the gear position sensor 24, and the switched new shift stage Mi is newly replaced in the memory M (step 15). After that, the control unit 21 has a function as a determination means, and determines whether or not the gear position of the transmission and the target shift speed match. In this case, the two shift speeds of the memory M and the lever memory C are compared,
When both coincide, that is, the target shift speed desired by the driver by operating the change lever 27 (here, neutral)
When the gear train of the transmission 12 is aligned with, the program returns, and when they do not match, the process proceeds to NO.

On the other hand, if the target gear is not neutral, step 9
Then, it is determined whether the brake abnormality sensor 36 does not output an ON signal, that is, whether or not it is normal. If abnormal, that is, if the air tank pressure is low, proceed to NO.
Proceed to step 17 on the side. Here, the gear shift stage signals are read by the memory M that stores the current gear shift stage of the transmission 12 and the lever memory C that stores the target gear shift stage, and these are compared, and C> M, that is, step 18 when shifting up.
When C> M, that is, when downshifting, go to step 19, C =
When M, that is, when the change lever holds the same speed again, the process proceeds to step 20. Here, in step 18, it is judged whether or not the gear stage of the memory M, that is, the current gear stage is reverse (M = O), and when it is not switching between forward and reverse, to NO, when it is reverse, When switching between forward and reverse
Go to step 21 on the YES side. Here, it is determined whether or not the current vehicle speed V is lower than or equal to the forward / reverse switching allowable vehicle speed (vehicle speed close to zero) Vo, and when the vehicle speed is high, the routine proceeds to step 22,
Here, it is determined whether or not the position of the change lever 27 is currently changed, that is, whether or not the switching operation in-progress signal is output. If the switching operation is in progress, the process returns, and if it is immovable, the process returns to step 21. Here, when the vehicle speed becomes equal to or lower than the forward / reverse switching allowable vehicle speed Vo, the routine proceeds to step 23.

On the other hand, when proceeding from step 17 to step 20, here, the target gear position instructed by the change lever and the current gear position match, and only the electromagnetic valve 23 for shifting is simply used to complete the shift again. Turn on and return. When the process proceeds from step 17 to step 19, here it is judged whether or not the target shift speed instructed by the change lever is reverse, that is, (C = O). If NO in step 21, that is, in the case of normal downshift, the process proceeds to step 24. Here, the shift-down allowable vehicle speed Vi for each shift speed corresponding to the target shift speed that is the new transmission Ci is read from a previously stored data table. Then, it is determined whether the current vehicle speed V is less than or equal to the downshift allowable vehicle speed Vi, and if the vehicle speed is too high.
Go to step 25 on the NO side and step 2 on the YES side when the vehicle speed decreases
Go to 3. In step 25, just like step 20, only the electromagnetic valve 23 for shifting is turned on to simply complete the shift, and the current gear position is held. After this step 26
Then, similar to steps 22 and 23, if the change lever 27 is changed, the process returns, and if it is not changed, the process returns to step 24. If it is determined in step 24 that the vehicle speed is lower than the downshift allowable vehicle speed Vi, the routine proceeds to step 23 described above, and proceeds to step 27 on the NO side unless the change lever 27 changes.

In step 27, first set the gear position to the neutral line.
To return to Q2, the shift electromagnetic valve 23 is turned on.
Then, in steps 28, 29, 30, and 31, the same processing and judgment as in steps 11, 12, 13, and 14 are performed. As a result, the select member (not shown) is moved to the select line corresponding to the target gear position indicated by the change lever 27, and the electromagnetic valve 23 for selecting is selected.
Moves by the action of. After this, in step 32, steps 11, 2
Similar to 8, it is determined whether or not the reference set time Td has elapsed after the electromagnetic valve 23 is activated, and after the time has elapsed, the process of step 33,
That is, similarly to steps 12 and 29, the electromagnetic valve 23 for selection processed in step 31 is turned off. After this, in step 34, similarly to step 13 and the like, if the change lever 27 is actuated, the process returns and the steps 35 and 36 are not actuated. Here, the electromagnetic valve 23 for shifting the gear position on the select line corresponding to the target shift speed is turned on to complete the shift operation so as to match the target shift speed. At the same time, the gear throttle electromagnetic valve 46 is turned on, and the meshing operation is performed at an appropriate meshing operation variable speed. After this, in step 37, it is determined whether or not the output of the gear position sensor 24 is on, that is, whether or not the gear train has completed shifting, and YES
Then, proceed to steps 38 and 39 with NO and proceed to step 40, respectively. In steps 38 and 39, the gear throttle electromagnetic valve 46 operated in step 36 and the reaction force electromagnetic valve 32 operated in step 8 are turned off, respectively, and the process proceeds to steps 15 and 16 described above. On the other hand, in step 40, it is determined whether or not the maximum reference set time Tm (Tm> Td) has elapsed after the shift electromagnetic valve 23 has been activated, and if NO, that is, the process proceeds to step 41. Here, the abnormality display lamp 42 is lit up, and thereafter the control is stopped.

As described above, according to the present invention, when the switching control means receives the clutch disengagement signal and the shift signal, it applies the operation reaction force to the manual operation member and shifts the gear position to the target shift speed, thus completing the shift operation. At times, it is possible to control the application of the reaction force so that an alarm is output if the gear shifting operation is not completed within the maximum reference setting time. It is possible to release the gear shift operation reaction force applied to the operating member, and in the event of an abnormality, it is possible to prevent excessive malfunction by recognizing the malfunction of the device in response to an alarm and continue to apply excessive operating force to the manual operating member. It is possible to avoid the occurrence of a failure and reduce the repair cost associated with the occurrence of a serious failure.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall configuration diagram of the present invention, FIG. 2 is a schematic layout diagram of a mission control device as one embodiment of the present invention, and FIG. The shift pattern diagram of the transmission and FIGS. 4 (a) and 4 (b) respectively show a flowchart of a control program used in the mission control device. 1,11 …… Clutch, 2,19 …… Clutch sensor, 3,27 ……
Change lever, 4,22 ...... gear switch, 5,12 …… gearbox, 6,24 …… gear position sensor, 8,20 …… gear shift unit, 9,21 …… control unit, 42 …… abnormality indicator lamp .

Claims (2)

[Scope of utility model registration request] 1. A clutch sensor for outputting an engagement / disengagement signal of a clutch of a vehicle, a shift stage selection switch for outputting a shift signal corresponding to a target shift stage in response to a switching operation of a manual operation member by a driver, A gear position sensor that outputs a gear position signal corresponding to the gear position of the transmission, a gear position switching means that switches the meshing mode of the transmission to a target shift stage based on the shift signal, and an operation reaction force to the manual operation member. And a gear shift position of the transmission, which is operated by the reaction force applying means to actuate the reaction force applying means when receiving the clutch disconnection signal and the shift signal. The gear position switching means is shifted to match the target shift speed, and when the completion of the shifting operation is detected by the output of the gear position sensor, the reaction force applying means is deactivated. When the completion of the gear shifting operation is not detected even after the maximum reference set time has elapsed after the start of the operation of the gear position switching means, the switching control means has A finger touch control transmission control device comprising means for activating the alarm means. 2. A finger according to claim 1, wherein said switching control means prevents shifting operation of said gear position switching means until the vehicle speed falls below a forward / reverse switching permissible vehicle speed during forward / backward switching. Touch control transmission control device.