JP3312264B2 - Emergency transmission control device - Google Patents

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 a motor vehicle, especially a large route bus, starting and stopping are frequently performed, and a shift operation is repeated a considerable number of times during driving. This shift operation is performed by a change lever in the driver's seat, and a long rod is used to connect a distance of about 10 m from the change lever to the transmission at the rear of the vehicle body, and the shift speed of the transmission is switched via the rod. For this reason, both the operation force and the stroke of the change lever are large, which causes driver 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 is connected to the control box according to the operation of the change lever by the change lever unit. A finger control that transmits a position signal, generates a shift control signal (shift control signal) in a control box, and sends the generated shift control signal to a gear shift unit to switch a transmission gear. -A transmission system (hereinafter referred to as FCT) is employed.

In the FCT, a shift control signal is generated based on a change lever position signal from a change lever unit, and the generated shift control signal is sent from a control box to a gear shift unit. The shift control signal selectively drives solenoid valves attached to the select cylinder and the shift cylinder in the gear shift unit, switches the supply state of compressed air from the air tank, and switches the piston position in the cylinder. Then, the shift fork of the selection operation section moves, and the gear position of the transmission is switched. If this FCT is used, the speed change operation is replaced with the electric pneumatic control mechanism from the mechanical remote control mechanism, and the operating force and the shift stroke can be greatly reduced, and the driving fatigue can be reduced.

In this type of FCT, a gear shift unit is directly driven to operate a transmission by assuming a case where a gear cannot be shifted even if a change lever is operated due to an abnormality of an electric signal system such as a change lever unit, a control box, and wiring. An emergency shift control device (emergency switch box) that enables the switching of the shift speed is provided. This emergency switch box is provided with a rotary switch for forward movement and a rotary switch for backward movement on the front surface thereof, and is normally set to the OFF position.

For example, when the forward rotary switch is rotated one step clockwise in an emergency, the emergency switch box transmits a control stop signal for preventing transmission of a shift control signal from the control box and outputs an arbitrary control stop signal. An emergency shift control signal corresponding to the neutral position is generated, and the emergency shift control signal is sent to the gear shift unit instead of the shift control signal from the control box. When the forward rotary switch is further rotated one step clockwise, the position “N” is reached.
2 "generates a shift control signal for emergency in accordance with the (neutral position), it generates a shift control signal for emergency according to the Rotating another stage position" 2 ".
For emergency from the emergency switch box
The electromagnetic valve in the gear shift unit is selectively driven by the shift control signal to set the transmission gear position to the forward two-stage position. As a result, a second start can be made without using the change lever unit.

[0007]

However, in the conventional emergency switch box, the correspondence between the operation position of the rotary switch and the shift control signal for emergency is realized by a diode matrix (Japanese Utility Model Publication No. Sho 62-7016). If the correspondence between the operation position of the rotary switch and the emergency shift control signal changes, the connection state of the diode matrix must be changed. That is, the combination of the operating position of the rotary switch and the solenoid valve to be driven attached to the gear shift unit may be different depending on the system,
In such a case, the connection state of the diode matrix must be changed to cope with the situation.

For this reason, in the conventional emergency switch box, the connection state of the diode matrix must be changed depending on the system to be used. . Also, according to the type of combination of the operating position of the rotary switch and the solenoid valve to be driven, it is necessary to secure a mounting space for the diode that can cope with this type of combination, which hinders compactness. Was. In addition, there is also a problem that the cost of parts is increased because many diodes are required.

SUMMARY OF THE INVENTION The present invention has been made to solve such problems, and an object of the present invention is to reduce assembling costs and parts costs to promote the cost reduction, and to provide functional parts. It is an object of the present invention to provide an emergency transmission control device capable of reducing the mounting space of the device and promoting its compactness.

[0010]

In order to achieve such an object, the first invention (the invention according to claim 1) has a manual switch.
Correspondence between the switch operation position and the shift control signal for emergency
Memory means for storing a plurality of types of combination patterns indicating engagement
And a plurality of types of combination patterns stored in the memory means.
From the turn, provided on the control box side
A set corresponding to the selection designation status provided by the selection designation means
The matching pattern is used when generating the emergency shift control signal.
Putter to select as the combination pattern to use
And a selection means. The second invention (claim 2
The invention according to the present invention) has an operation position of a manual switch and an emergency
Multiple combination patterns indicating the correspondence with the shift control signal
Memory means for storing the type, and
Gear shift
Selection provided by the selection designating means provided on the knit side
Change the combination pattern corresponding to the specified situation
As a combination pattern used when generating control signals
And combination pattern selecting means for selecting.
You. The third invention (the invention according to claim 3) is the control
When connecting to the box,
Between the operating position of the manual switch and the shift control signal for emergency
Given the combination pattern showing the correspondence,
To generate a shift control signal for emergency using the matching pattern
A memory means for storing and holding as a combination pattern to be used is provided.

[0011]

According to the present invention, therefore, in the first invention,
Of the plural kinds of combination patterns stored in the memory means.
From the selection box on the control box.
Selection designation status, for example, ON / OFF with combination selection switch
The combination pattern corresponding to the situation is selected and
Used for generating the shift control signal. In the second invention
Is a plurality of combinations of patterns stored in the memory means.
From the gear shift unit side
Selection designation status, for example, ON / OFF with the combination selection switch
The combination pattern corresponding to the
Is used when generating the speed change control signal. In the third invention
When connected to the control box,
Operation position of manual switch from box and shifting for emergency
A combination pattern indicating the correspondence with the control signal is provided.
This combination pattern is stored and held in the memory means,
It is used when generating a shift control signal for an emergency .

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on embodiments. FIG. 2 is a system configuration diagram showing one 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,
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 reducing pressure, and 20 is a display unit.

As shown in FIG. 3, the CLU 10 operates the change lever 10-1 to change the shift pattern to five forward speeds (“1”, “2”, “3”, “4”, “4”).
"5"), one step backward ("R"), neutral ("N
1), "N2", and "N3"). That is, if the change lever 10-1 is at the “N1” position, the sensors SiB, Se attached to the CLU 10
When A is turned on, a change lever position signal G indicating the position “N1” is sent to the ECU 11. When the change lever 10-1 is moved from the position "N1" to the position "N2" or "N3" in the select direction, the sensors SeB and SeC are turned on, and the positions "N2" and "N2" are turned on.
The change lever position signal G indicating "N3" is
Sent to If the change lever 10-1 is moved in the shift direction from the position "N3" to the position "5", the sensor SiC is turned on, so that the change lever position signal G indicating the position "5" is output from the ECU 11
Sent to FIG. 4 shows the correspondence between the positions 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 determines the rotational state N of the engine 14.
e and the vehicle speed V as inputs, and based on the change lever position signal G from the CLU 10, the engine rotation state Ne and the vehicle speed V
, And generates the shift control signal S, and sends the generated shift control signal S to the GSU 12. In addition, EC
U11 indicates that the change lever position signal G is in position "N".
If it is a signal (neutral signal) indicating "1", "N2", or "N3", a drive signal is sent to the three-way solenoid valve 18 and the compressed air from the air tank 15 is sent to the CLU 10. The compressed air passing through the three-way solenoid valve 18 causes the CLU 10
, A reaction force against the change lever 10-1 is generated.

The GSU 12 receives a shift control signal S from the ECU 11 and switches the gear position 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 operation section. The shift cylinder 4-1 is provided with solenoid valves MVA and MVB,
The select cylinder 4-2 is provided with solenoid valves MVC and MVD. The shift control signal S from the ECU 11 is given to the solenoid valves MVA to MVD. By the shift control signal S, the solenoid valves MVA to MVD are selectively driven, and the state of supply of compressed air from the air tank 15 is switched.
The positions of the pistons 4-12 and 4-22 in the gear 2 are switched, a shift fork (not shown) in the selection operation section 4-3 moves, and the gear position of the transmission 13 is switched. FIG. 4 shows the correspondence between the positions of the change lever 10-1 and the driving states (ON states) 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 the 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 provided 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 matches the actually switched gear position, 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. Thereby, the reaction force against the change lever 10-1 disappears, and it is possible to realize that the shift operation to the desired position is completed. Note that the gear position detection signal GP from the GSU 12 is also supplied 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 of electric signal system such as wiring
1 is an emergency shift control device that enables the GSU 12 to be driven directly to switch the shift speed of the transmission 13 when shifting is not possible even by operating the transmission 1. 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, and 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
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 for emergency in accordance with any of the neutral position S '(S' _1). The emergency shift control signal S ′ is supplied to the GSU 12 instead of the shift control signal S. When the rotary switch 16-1 is further rotated clockwise by one stage, an emergency shift control signal S ′ (S ′ ₂ ) corresponding to the position “N2” is generated. When the rotary switch 16-1 is further rotated by one stage, the position “ 2) emergency shift control signal S ′
(S ′ ₃ ) is generated. For emergency from this EMS16
The solenoid valves MVA to MVD in the GSU 12 are selectively driven by the shift control signal S ′, so that the speed position of the transmission 13 is set to the second forward position. As a result, a second start can be made without using the CLU 10. By operating the rotary switch 16-2,
As in the case of the rotary switch 16-1, the CLU
It can be retracted without using 10.

FIG. 1 is a block diagram showing an outline of the internal configuration of the EMS 16. In this example , a ROM 16-31 is provided in a control circuit 16-3 of the EMS 16, and the ROM 16-31 is provided.
At -31, a plurality of types of combination patterns indicating the correspondence between the operation positions of the rotary switches 16-1 and 16-2 and the emergency shift control signal S 'are stored. That is,
Different rotary switches 16-1 and 16 depending on the system
-2 is a combination pattern showing the correspondence between the operation positions of the rotary switches 16-1 and 16-2 and the emergency shift control signal S 'in accordance with the combination of the operation position of -2 and the solenoid valves MVA to MVD to be driven. Are stored in plural types. 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 the 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 operates when the rotary switch 16-1 (16-2) is operated.
The signal to the timer 16-6 falls from the "H" level to the "L" level, and the timer 16-6 is operated. By the operation of the timer 16-6, the coil Ry of the relay Ry
A current flows to L, the normally open contact rya is turned on, and power is supplied to the drive circuits 16-51 to 16-54. 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 operated, and the shift control signal S
Block the sending of

Further, the control circuit 16-3 controls the emergency switch corresponding to the operation position of the rotary switch 16-1 (16-2).
The drive circuit 16-
The control signal is sent to 51 to 16-54. Here, the control signals to the drive circuits 16-51 to 16-54 are generated as follows. That is, the rotary switch 16-1
When the operation position of (16-2) is given, the control circuit 16
-3 is a switch SW of the combination selection switch 16-4.
A combination pattern of a type corresponding to the on / off status of 1 to SWn is selected from the stored data in the ROM 16-31. Then, pattern data corresponding to the operation position of the rotary switch 16-1 (16-2) is read from the selected combination pattern, and a 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 emergency shift control signal S 'corresponding to the operation position of the rotary switch 16-1 (16-2) is transmitted to the GSU12.
Sent to

Here, if the on / off status of the switches SW1 to SWn in the combination selection switch 16-4 is changed,
The combination pattern selected from the data stored in the ROMs 16-31 can be changed. In other words, only it'll change the on-off state of the switch SW1~SWn of a set together selection switch 16-4, the rotary switch 16-1,
The correspondence between the operation position 16-2 and the emergency shift control signal S 'can be changed. Thus, better only changed by the system to be used on and off conditions at union <br/> not select switches 16-4, without the need for stage sort of in manufacturing, that increase assembly costs Absent. Also, since it is only necessary to provide the ROM 16-31,
The space for mounting functional components is reduced, and compactness can be promoted. Although in the case of a diode matrix needed a lot of diodes, without requiring these diodes, it is possible to reduce component cost. In this example , the combination pattern is stored in the ROM. However, the combination pattern may be stored in a memory means such as an EPROM.

[0023] Example 1: first INVENTION In the above example, it is assumed to provide a combination selection switch 16-4 EMS16, in Example 1 ECU
Provided on the 11 side . That is, when the EMS 16 is connected to the ECU 11, the on / off state of the combination selection switch 16-4 provided in the ECU 11 is automatically given to the control circuit 16-3.
-4, a combination pattern of a type corresponding to the on / off situation is selected from the stored data in the ROM 16-31 .
You .

[ Embodiment 2: Second invention ] In Embodiment 1 , the combination selection switch 16-4 is set to E
In the second embodiment, the GSU is provided on the CU11 side.
Provided on the 12th side . That is, when the EMS 16 is connected to the GSU 12, the on / off state of the combination selection switch 16-4 provided in the GSU 12 is automatically given to the control circuit 16-3.
-4, a combination pattern of a type corresponding to the on / off situation is selected from the stored data in the ROM 16-31 .
You .

Third Embodiment In the first and second embodiments , the combination selection switch 16-4 is used.
However, a function similar to that of the combination selection switch 16-4 may be obtained depending on the connection status of a jumper wire or the like. The combination selection switch 16-4
The function similar to that described above may be realized by taking out a signal line to the outside via a connector and wiring in the vehicle, or connecting a dedicated connector.

[0026] Example 4: Third Invention] In the embodiments 1, 2 and 3, but so as to plural kinds stored combination patterns in ROM16-31, a memory circuit such as a latch circuit to the control circuit 16-31 May be provided, and the memory circuit may store and hold the combination pattern provided when connected to the ECU 11. That is, when the EMS 16 is connected to the ECU 11 and the power is turned on, the operation positions of the rotary switches 16-1 and 16-2 are determined.
It is assumed that a combination pattern indicating a correspondence relationship with the emergency shift control signal S ′ is automatically provided from the ECU 11 to the EMS 16, and the provided combination pattern is used as an emergency.
A configuration may be adopted in which the memory circuit stores and holds the combination pattern used when generating the time shift control signal S ′. Note that, in this case, the EMS 16
It goes without saying that the provided combination pattern is stored and retained even if the EMS 16 is disconnected from the CU 11.
It is also possible to reset the combination pattern stored in the internal memory circuit from the ECU 11 side.

[0027]

As is apparent from the above description, according to the present invention, in the first aspect, the memory means stores the information.
Control box from multiple types of combination patterns
Union corresponding to the selection / designation status by the selection / designation means on the
Is selected, and in the second invention, the memory means is recorded.
Gear shift from multiple combination patterns
Corresponding to the selection / designation status by the selection / designation means on the
Is selected, and an emergency gearshift control signal is selected.
Is used when generating
When connecting to the control box,
Operating position of manual switch from gearbox and shifting control for emergency
A combination pattern indicating the correspondence with the signal is provided.
The combination pattern of
Used to generate the shift control signal for
You. This makes it possible to use a diode matrix or diode
It is not necessary to change the connection status of the matrix, it is possible to reduce assembly costs and component costs and promote cost reduction, and it is also possible to reduce the mounting space for functional components and promote their compactness. .

[Brief description of the drawings]

FIG. 1 shows an FCT (finger control
FIG. 2 is a block diagram schematically illustrating an internal configuration of an EMS (emergency switch box) in the transmission system.

FIG. 2 is a diagram showing one 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. 5 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 the EMS in the 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) 16-2 Rotary Switch (For Reverse) 16-3 Control Circuit 16 -31 ROM 16-4 Combination selection switch 16-51 to 16-54 Drive circuit

Claims (3)

(57) [Claims] 1. Operation of a manual switch operated in an emergency
Speed change control signal corresponding to the operating position
The emergency gearshift control signal.
Based on the change lever position signal from the bar unit,
A shift control signal for controlling the operation of the gearshift unit.
Instead of the shift control signal from the control box
In emergency shift control device for providing to the gear shift unit Te, and memory means corresponding relationship a plurality of types stores combination patterns indicating a shift control signal for the emergency and operating position of the manual switch, the memory means stores Multiple types of combination putters
From the control box side
A set corresponding to the selection designation status provided by the selection designation means
The matching pattern is used to generate the emergency shift control signal.
And a combination pattern selecting means for selecting a combination pattern to be used at that time. 2. Operation of a manual switch operated in an emergency
Speed change control signal corresponding to the operating position
The emergency gearshift control signal.
Based on the change lever position signal from the bar unit,
A shift control signal for controlling the operation of the gearshift unit.
Instead of the shift control signal from the control box
Emergency shift control device provided to the gear shift unit
In the above, the operation position of the manual switch and the shift control for the emergency
Stores multiple types of combination patterns indicating the correspondence with signals
Memory means, and a plurality of types of combination patterns stored in the memory means.
From among the gears provided on the gear shift unit side.
Union corresponding to the option designation situation provided by the option designation means
In the generation of the emergency shift control signal.
Pattern to select as the combination pattern to use
Emergency shift control device being characterized in that a chromatography emissions selection means. 3. Operation of a manual switch operated in an emergency
Speed change control signal corresponding to the operating position
The emergency gearshift control signal .
Based on the change lever position signal from the bar unit,
A shift control signal for controlling the operation of the gearshift unit.
Instead of the shift control signal from the control box
Emergency shift control device provided to the gear shift unit
In connection with the control box,
The operating position of the manual switch and the
Combination putter that shows the correspondence with the transmission control signal for regular use
The combination pattern for the emergency
Combination Pattern Used for Generating Shift Control Signals
Further comprising a memory means for storing and holding the emergency shift control device according to claim.