JPH07190181A - Emergency speed change control device - Google Patents

Abstract

PURPOSE:To reduce assembling cost and parts cost to promote cost reduction and reduce functional parts mounting space to promote compactness. CONSTITUTION:A ROM 16-31 is provided in the control circuit 16-3 of an EMS 16. The ROM 16-31 is previously stored with plural kinds of combination patterns indicating the corresponding relation between the operating positions of rotary switches 16-1, 16-2 and speed change control signals S'. A combination selector switch 16-4 is provided, and the on-off state of switches SW1-SWn in the combination selector switch 16-4 is supplied to the control circuit 16-3. The control circuit 16-3 selects the combination pattern, corresponding to the on-off state of the switches SW1-SWn in the combination selector switch 16-4, from the memory of the ROM 16-31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency speed change control device suitable for use in a finger control transmission system.

[0002]

2. Description of the Related Art In automobiles, particularly large-sized bus lines, starting and stopping are frequently performed, and gear shifting operations are repeated a considerable number of times during driving. This shift operation is performed by a change lever on the driver's seat, and a long rod is connected to the change lever from the change lever at a distance of about 10 m from the rear portion of the vehicle body, and the shift stage of the transmission is switched via this rod. Therefore, both the operating force and the stroke of the change lever are large, which causes the driver's fatigue.

Therefore, in recent years, instead of connecting the change lever and the transmission with a rod, the change lever unit and the control box are connected by electric wiring, and the change lever unit is connected to the control box in accordance with the operation of the change lever. A finger control in which a position signal is not sent, a shift control signal (shift control signal) is generated in the control box, and the generated shift control signal is sent to the gear shift unit, so that the gear position of the transmission is switched. -A transmission system (hereinafter referred to as FCT) is adopted.

In this FCT, a shift control signal is generated based on the change lever position signal from the change lever unit, and the generated shift control signal is sent from the control box to the gear shift unit. Then, by this shift control signal, the select cylinder in the gear shift unit and the solenoid valve attached to the shift cylinder are selectively driven, the supply state of compressed air from the air tank is switched, and the piston position in the cylinder is switched. As a result, the shift fork of the selective actuation unit moves, and the shift speed of the transmission is switched. If this FCT is used, the gear shifting operation is replaced with a mechanical remote control mechanism by an electric pneumatic control mechanism, and the operating force and shift stroke can be greatly reduced and driving fatigue can be reduced.

In this type of FCT, assuming that the gear change unit cannot be operated even if the change lever is operated due to an abnormality in the electric signal system such as the change lever unit, the control box, and the wiring, the gear shift unit is directly driven to transmit the transmission. An emergency gear shift control device (emergency switch box) that enables switching of the gear positions is provided. This emergency switch box is provided with a forward rotary switch and a reverse rotary switch on its front surface, and is normally in the OFF position.

For example, in an emergency, when the forward rotary switch is rotated clockwise by one stage, the emergency switch box sends a control stop signal for preventing the shift control signal from being sent from the control box and an arbitrary control signal. A shift control signal corresponding to the neutral position is generated, and the shift control signal is sent to the gear shift unit in place of the shift control signal from the control box. When the forward rotary switch is further rotated clockwise by one stage, a shift control signal corresponding to the position "N2" (neutral position) is generated, and when the forward rotary switch is rotated one stage further, a shift control signal corresponding to the position "2" is generated. To generate. By the shift control signal from the emergency switch box, the solenoid valve in the gear shift unit is selectively driven, and the shift speed of the transmission is set to the forward two-speed position. As a result, it is possible to take a second start without using the change lever unit.

[0007]

However, in the conventional emergency switch box, the correspondence relationship between the operation position of the rotary switch and the shift control signal is realized by the diode matrix (Actual publication 6).
If the correspondence between the operation position of the rotary switch and the shift control signal changes, the connection state of the diode matrix must be changed.
That is, the combination of the operation position of the rotary switch and the solenoid valve to be driven attached to the gear shift unit may differ depending on the system.In such a case, it is necessary to change the connection state of the diode matrix to cope with it. .

For this reason, in the conventional emergency switch box, the connection state of the diode matrix must be changed according to the system used, and there is a problem that the number of steps in the manufacturing is increased and the assembly cost is increased. . In addition, it is necessary to secure enough mounting space for the diodes to accommodate the combination of the operation position of the rotary switch and the solenoid valve to be driven, which hinders compactness. It was Further, since many diodes are required, there is a problem that the cost of parts is increased.

The present invention has been made to solve the above problems, and an object of the present invention is to reduce the assembly cost and the parts cost and promote the cost reduction thereof, and the functional parts. It is an object of the present invention to provide an emergency gear shift control device that can reduce the mounting space of the device and promote its compactness.

[0010]

In order to achieve such an object, a first invention (an invention according to claim 1) of the invention provides a combination pattern showing a correspondence relationship between an operation position of a switch and a shift control signal. It is provided with a memory means for storing a plurality of types and a combination pattern selecting means for selecting a combination pattern to be used in generating the shift control signal from a plurality of types of combination patterns stored in the memory means. In a second invention (an invention according to claim 2), the emergency gear shift control device of the first invention is provided with a selection designating means, and the selection designation status in the selection designating means is designated from the outside to select a combination pattern. It is something that is given to the means. A third invention (the invention according to claim 3) is provided with a selection designating means on the control box side, and the selection designating means is provided when the emergency speed change control device of the first invention and the control box are connected. The selection designation status is given to the combination pattern selection means as designation from the outside. A fourth invention (the invention according to claim 4) is provided with a selection designating means on the gear shift unit side, and when the emergency shift control device of the first invention and the gear shift unit are connected, the selection designating means is provided. The selection designation status is given to the combination pattern selection means as designation from the outside. In addition, the fifth invention (the invention according to claim 5) receives a combination pattern indicating a correspondence relationship between a switch operation position and a shift control signal from the control box at the time of connection with the control box. A memory means for storing and holding the combination pattern is provided.

[0011]

Therefore, according to the first aspect of the present invention, the combination pattern used in generating the shift control signal is selected from a plurality of types of combination patterns stored in the memory means in accordance with designation from the outside. To be done. Also,
In the second aspect of the invention, the selection designation status of the selection designation means, for example, the on / off status of the combination selection switch is given to the combination pattern selection means as an external designation. In the third aspect of the invention, when the emergency shift control device of the first aspect of the invention is connected to the control box, the selection designation status of the selection designation means on the control box side, for example, the on / off status of the combination selection switch is externally applied. Is given to the combination pattern selection means. Further, in the fourth aspect of the invention, when the emergency shift control device of the first aspect of the invention is connected to the gear shift unit, the selection designation state by the selection designation means on the gear shift unit side, for example, the on / off state by the combination selection switch is external. Is given to the combination pattern selection means. In the fifth aspect of the invention, when connecting to the control box, the control box provides a combination pattern indicating the correspondence between the switch operating position and the shift control signal, and the combination pattern is stored and held in the memory means to change the speed. Used in generating control signals.

[0012]

EXAMPLES The present invention will now be described in detail based on examples. FIG. 2 is a system configuration diagram showing an embodiment of an FCT (finger control transmission system) to which the present invention is applied. In the figure, 10 is a CLU (change lever unit), 11 is an ECU (control box), 12 is a GSU (gear shift unit), 13 is a transmission, 14 is an engine,
Reference numeral 15 is an air tank, 16 is an EMS (emergency switch box), 17 is a clutch pedal, S1 is a first clutch switch for detecting the start of depression of the clutch pedal 17, and S2 is a second clutch for detecting completion of depression of the clutch pedal 17. A switch, 18 is a three-way solenoid valve, 19 is a reducing valve for pressure reduction, and 20 is a display unit.

As shown in FIG. 3, the CLU 10 operates the change lever 10-1 to move forward 5 speeds ("1", "2", "3", "4",
"5"), reverse 1st step ("R"), neutral ("N")
1), "N2", "N3"), and a change lever position signal G corresponding to each position. That is, if the change lever 10-1 is in the "N1" position, the sensors SiB and Se provided in the CLU 10 are attached.
When A is turned on, a change lever position signal G indicating the position “N1” is sent to the ECU 11. Then, when the change lever 10-1 is moved from the position "N1" to the positions "N2" and "N3" in the select direction, the sensors SeB and SeC are turned on and the position "N2",
The change lever position signal G indicating “N3” is transmitted to the ECU 11
Sent to. If the change lever 10-1 is moved from the position "N3" in the shift direction to the position "5", the sensor SiC is turned on. Therefore, the change lever position signal G indicating the position "5" is sent to the ECU 11
Sent to. FIG. 4 shows a correspondence relationship between each position of the change lever 10-1 and the operating states (on states) of the sensors SiA to SiC and SeA to SeC.

The ECU 11 controls the rotation state N of the engine 14.
Based on the change lever position signal G from the CLU 10, the engine rotation state Ne and the vehicle speed V are input.
The shift control signal S is generated in consideration of the above information, and the generated shift control signal S is sent to the GSU 12. In addition, EC
In U11, the change lever position signal G indicates the position "N".
If the signals are "1", "N2", and "N3" (neutral signals), a drive signal is sent to the three-way solenoid valve 18, and compressed air from the air tank 15 is sent to the CLU 10. With the compressed air passing through the three-way solenoid valve 18, the CLU 10
At, the reaction force with respect to the change lever 10-1 is generated.

Upon receiving the shift control signal S from the ECU 11, the GSU 12 switches the gear stage of the transmission 13. FIG. 5 is a diagram showing a main configuration of the GSU 12. In the figure, 4-1 is a shift cylinder, 4-2 is a select cylinder, and 4-3 is a selection operating unit. Solenoid valves MVA and MVB are attached to the shift cylinder 4-1.
Electromagnetic valves MVC and MVD are attached to the select cylinder 4-2. The shift control signal S from the ECU 11 is given to the solenoid valves MVA to MVD. The shift control signal S selectively drives the solenoid valves MVA to MVD to switch the supply status of the compressed air from the air tank 15 and shift cylinder 4-1 and select cylinder 4-.
The positions of the pistons 4-12 and 4-22 in 2 are switched, the shift fork (not shown) in the selection actuating unit 4-3 moves, and the shift speed of the transmission 13 is switched. FIG. 4 shows the correspondence relationship between each position of the change lever 10-1 and the driving state (ON state) of the solenoid valves MVA to MVD.

The shift cylinder 4-1 and the select cylinder 4-2 have sensors SiA 'to SiC' and SeA 'to Se for detecting the positions of their pistons 4-12 and 4-22.
C'is arranged. This sensor SiA '~ Si
The detection status of the piston positions C ′, SeA ′ to SeC ′ is given to the ECU 11 as a gear position detection signal GP.
The ECU 11 compares the gear position detection signal GP with the change lever position signal G, and if the position shifted by the change lever 10-1 and the actually switched gear position match, the ECU 11 sends the signal to the three-way solenoid valve 18. A drive stop signal (shift completion feedback signal) is sent to shut off the supply of compressed air from the air tank 15 to the CLU 10. As a result, the reaction force to the change lever 10-1 disappears, and it is possible to feel that the shift operation to the desired position is completed. The gear position detection signal GP from the GSU 12 is also given to the display unit 20. As a result, the current gear position is displayed on the display unit 20.

The EMS 16 includes a CLU 10, an ECU 11,
Change lever 10- due to abnormality in electrical signal system such as wiring
This is an emergency gear shift control device that allows the GSU 12 to be directly driven to switch the gear stage of the transmission 13 when gear shifting is not possible even if 1 is operated. This EMS1
6 is provided with rotary switches 16-1 and 16-2 as shown in the front view of FIG. The rotary switch 16-1 is for forward movement, the rotary switch 16-2 is for backward movement, and is normally in the OFF position.

When the rotary switch 16-1 is rotated one step clockwise from the OFF position, the EMS 16 causes the ECU
Sends out a control stop signal E to prevent transmission of the shift control signal S from the 11, it generates a shift control signal S '(S' ₁₎ in accordance with any of the neutral position. This shift control signal S ′ replaces the shift control signal S and is GSU.
Given to 12. When the rotary switch 16-1 is further rotated in the clockwise direction by one stage, the shift control signal S ′ (S ′ ₂ ) corresponding to the position “N2” is generated, and when it is rotated by another stage, the shift control signal S ′ (S ′ ₂ ) is generated in accordance with the position “2”. shift control signal S to generate a '(S' ₃₎ it was. The shift control signal S ′ from the EMS 16 selectively drives the solenoid valves MVA to MVD in the GSU 12 to set the gear position of the transmission 13 to the forward two speed position. As a result, it is possible to take a second start without using the CLU 10. By operating the rotary switch 16-2, the CLU 10 can be operated in the same manner as the rotary switch 16-1.
Can be retracted without using.

[Embodiment 1] FIG. 1 is a block diagram showing the outline of the internal structure of the EMS 16. In this embodiment, EMS
ROM 16-31 is provided in 16 control circuits 16-3,
This ROM 16-31 has rotary switches 16-1, 1
A plurality of types of combination patterns indicating the correspondence between the operation position 6-2 and the shift control signal S ′ are stored. That is, the rotary switch 16-1, which is different depending on the system,
16-2 Operation position and solenoid valves MVA to MVD to be driven
Depending on the combination with the rotary switches 16-1, 16-
A plurality of types of combination patterns indicating the correspondence between the operation position 2 and the shift control signal S ′ are stored. A combination selection switch 16-4 is provided, and the ON / OFF status of the switches SW1 to SWn in the combination selection switch 16-4 is given to the control circuit 16-3.

In this EMS 16, the rotary switch 1
When 6-1 (16-2) is operated, the operation position is given to the control circuit 16-3. The control circuit 16-3, when the rotary switch 16-1 (16-2) is operated,
The signal to the timer 16-6 is lowered from the "H" level to the "L" level, and the timer 16-6 is operated. By the operation of this timer 16-6, the coil Ry of the relay Ry is
A current flows to L, the normally open contact point rya is turned on, and power is supplied to the drive circuits 16-51 to 16-54. Further, the control circuit 16-3 includes a rotary switch 16-1.
When (16-2) is operated, the transistor 16-7 is turned on, a relay (not shown) provided inside the ECU 11 is activated, and the shift control signal S from the ECU 11 is activated.
Block the delivery of.

Further, the control circuit 16-3 drives the drive circuits 16-51 to 16-16 so as to provide the shift control signal S'corresponding to the operation position of the rotary switch 16-1 (16-2).
Send control signal to -54. Here, the drive circuit 16-51
The control signals to 16-54 are generated as follows. That is, the rotary switch 16-1 (16-2)
When the operation position of R is given, the control circuit 16-3 sets the combination pattern of the type corresponding to the on / off state of the switches SW1 to SWn in the combination selection switch 16-4 to R
Select from the memory of OM16-31. Then, the rotary switch 16-1 is selected from the selected combination pattern.
The pattern data corresponding to the operation position of (16-2) is read, and the control signal corresponding to the pattern data is sent to the drive circuits 16-51 to 16-54. As a result, the operations of the drive circuits 16-51 to 16-54 are controlled, and the shift control signal S ′ corresponding to the operation position of the rotary switch 16-1 (16-2) is sent to the GSU 12.

If the on / off states of the switches SW1 to SWn in the combination selection switch 16-4 are changed,
The combination pattern selected from the storage of the ROM 16-31 can be changed. That is, according to this embodiment, the switches SW1 to SW1 in the combination selection switch 16-4 are
The correspondence between the operation positions of the rotary switches 16-1 and 16-2 and the shift control signal S ′ can be changed only by changing the on / off state of SWn. As a result, according to the present embodiment, the on / off state of the combination selection switch 16-4 only needs to be changed depending on the system used, there is no need to change the stage during manufacturing, and the assembly cost increases. There is no. Also ROM16-3
Since only 1 is provided, the mounting space for the functional component is reduced, and the compactness can be promoted. Further, in the case of the diode matrix, many diodes were required, but according to the present embodiment, these diodes are not required, and the cost of parts can be reduced. Although the combination pattern is stored in the ROM in this embodiment, it may be stored in a memory means such as an EPROM.

Second Embodiment In the first embodiment, the combination selection switch 16-4 is provided on the EMS 16, but it may be provided on the ECU 11 side. That is, when the EMS 16 and the ECU 11 are connected, the ECU
Turning on the combination selection switch 16-4 provided in No. 11
The off state may be automatically given to the control circuit 16-3, and a combination pattern of a type corresponding to the on / off state of the combination selection switch 16-4 may be selected from the storage of the ROM 16-31.

[Third Embodiment] In the second embodiment, the combination selection switch 16-4 is provided on the ECU 11 side, but it may be provided on the GSU 12 side. That is, when the EMS 16 and the GSU 12 are connected, the GSU
The combination selection switch 16-4 provided in 12 is turned on.
The off state may be automatically given to the control circuit 16-3, and a combination pattern of a type corresponding to the on / off state of the combination selection switch 16-4 may be selected from the storage of the ROM 16-31.

[Fourth Embodiment] In the first, second, and third embodiments, the combination selection switch 16-4 is provided, but the same function as the combination selection switch 16-4 can be obtained depending on the connection status of the jumper wire or the like. It may be one.
Further, the function similar to that of the combination selection switch 16-4 may be realized by the in-vehicle wiring by taking out the signal line to the outside through the connector, or by connecting the dedicated connector.

[Fifth Embodiment] In the first embodiment, the ROM is used.
Although a plurality of types of combination patterns are stored in 16-31, a memory circuit such as a latch circuit is provided in the control circuit 16-31 and the combination pattern provided at the time of connection with the ECU 11 is stored and held in this memory circuit. May be That is, when the EMS 16 is connected to the ECU 11 and the power is turned on, the rotary switches 16-1, 16
-2, it is assumed that a combination pattern showing a correspondence relationship between the operation position of -2 and the shift control signal S'is automatically provided from the ECU 11 to the EMS 16, and the provided combination pattern is used in generating the shift control signal S '. The combination pattern may be stored and held in the memory circuit. In this case, the EMS 16 determines that the ECU 11
It is needless to say that the provided combination pattern is stored and held even when the combination pattern is separated from the ECU 1.
It is also possible to reset from the 1 side.

[0027]

As is apparent from the above description, according to the present invention, in the first to fourth inventions, when the shift control signal is generated from the plurality of kinds of combination patterns stored in the memory means, it is used. Since the combination pattern to be selected is selected according to the designation from the outside, in the fifth aspect of the invention, the combination showing the correspondence between the switch operating position and the shift control signal from the control box when the control box is connected. Since the pattern is provided and this combination pattern is stored and held in the memory means and used when generating the shift control signal, it is possible to reduce the assembly cost and the component cost and promote the price reduction thereof.
It is also possible to reduce the mounting space for functional parts and promote their compactness.

[Brief description of drawings]

FIG. 1 shows the FCT (finger control
It is a block diagram which shows the outline of an internal structure of EMS (emergency switch box) in a transmission system.

FIG. 2 is a diagram showing an embodiment of an FCT to which the emergency shift control device according to the present invention is applied.

[Fig. 3] CLU (change lever unit) in FCT
FIG. 6 is a diagram showing a shift pattern in FIG.

FIG. 4 is a diagram showing a correspondence relationship between a position of a change lever in a CLU and an operation state of each sensor and a correspondence relationship between an operation state of each solenoid valve in a GSU (gear shift unit).

FIG. 5 is a diagram showing a main part of a GSU in FCT.

FIG. 6 is a front view of an EMS in FCT.

[Explanation of symbols]

 10 CLU (change lever unit) 11 ECU (control box) 12 GSU (gear shift unit) 16 EMS (emergency switch box) 16-1 rotary switch (for forward movement) 16-2 rotary switch (for backward movement) 16-3 control circuit 16 -31 ROM 16-4 Combination selection switch 16-51 to 16-54 Drive circuit

Claims (5)

[Claims] 1. An emergency shift control device for generating a shift control signal corresponding to an operation position of a switch operated in an emergency, wherein the correspondence relation between the switch operation position and the shift control signal is shown. It is provided with a memory means for storing a plurality of types of combination patterns, and a combination pattern selection means for selecting a combination pattern to be used in generating the shift control signal from a plurality of types of combination patterns stored in the memory means. Emergency shift control device. 2. The emergency shift control apparatus according to claim 1, further comprising selection designation means, wherein the selection designation status of this selection designation means is given to the combination pattern selection means as designation from the outside. 3. The control system according to claim 1, wherein the gearbox control unit generates a shift control signal based on a change lever position signal from the change lever unit,
An emergency shift control device characterized in that the selection designation status of the selection designation means provided on the control box side is given to the combination pattern selection means as an external designation. 4. The combination pattern selecting means as claimed in claim 1, wherein, when the gearshift unit to which the shift control signal is applied, is connected to the gearshift unit, the selection designation status of the selection designation means provided on the gearshift unit side is designated from the outside. An emergency shift control device characterized by being provided to. 5. An emergency gear shift control device for generating a gear shift control signal corresponding to an operation position of a switch operated in an emergency, wherein the gear shift control signal is received in response to a change lever position signal from a change lever unit. A memory means for receiving a combination pattern indicating a correspondence relationship between the operation position of the switch and the shift control signal from the control box at the time of connection with the control box to be generated and storing and holding the combination pattern Emergency shift control device characterized by.