JP2580031Y2 - Speed change emergency switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention attaches a gear train of a transmission of a vehicle to a shift operation system configured to switch a gear shift unit driven by a shift control means. In particular, the present invention relates to an emergency switch of a shift operation system capable of operating a gear shift unit instead of the shift control means in an emergency.

(Prior Art) A gear shift unit configured to dispose a gear shift unit that receives and outputs an output based on a shift signal in a shift operation system of a vehicle, and switches a gear train of a transmission of the vehicle by the gear shift unit. It has been known.

For example, in a shift operation device for a vehicle as shown in FIG. 3, a change lever 5 which is provided in a driver's seat of a vehicle C and outputs a shift command signal and a select command signal for designating a gear position.
Position signal generating device 1 provided with
And a gear shift unit 3 that receives a shift command signal and switches a gear train in the transmission 2 in accordance with each shift command signal.
And a signal processing unit 4 as a shift control means for outputting the signal to the CPU.

Such a shift operation system includes a lever position signal generator 1,
If an abnormality occurs in the signal processing unit 4, the gear shift unit 3, and the gear shift position switch, it becomes difficult to even move the vehicle to the evacuation place thereafter.

In order to cope with this, an emergency switch capable of moving the vehicle at a specific shift speed in an emergency without using the signal processing unit 4 is often provided in the shift operation system.

Such an emergency switch comprises, for example, a switch panel as shown in FIG. The switch board 7 is provided with a rotary switch 6 as a manual multi-stage changeover switch. The rotary switch 6 is configured to be able to output a shift output signal to the second speed and the reverse speed as the emergency traveling speed.

Here, the rotary switch 6 can switch the gear train to the second speed when turning to the right from the off position, which is the general traveling position, and to the reverse gear when turning to the left. That is, the gear is disengaged at the first stage of the right switch switching position, the second stage is provided with the second speed select line N ₂ (see FIG. 4), the third stage is shifted to the second speed, and the fourth stage is operated by the solenoid valve. Turn off output to The same processing is performed in the reverse step on the left.

When the switch to the second speed is completed by the rotary switch, the clutch can be connected and the vehicle can be made to travel urgently.

(Problems to be solved by the present invention) However, when the vehicle is moved forward only to the second speed, there is no problem in traveling to a safe position from an emergency state. However, traveling to return to the garage is easy depending on road conditions. Traveling may be difficult.

An object of the present invention is to provide an emergency switch of a shift operation system that can perform shift and select operations by switching of separate manual multi-stage changeover switches, does not cause a feeling of strangeness in shifting operations by these switch operations, and can perform shifting with good operability. To provide.

(Means for Solving the Problems) In order to achieve the above object, the present invention enables a select operation corresponding to the operation of the shift lever in the select direction and a shift operation corresponding to the operation of the shift lever in the shift direction. A shift command signal for designating a shift speed is input to the shift control means, and the shift control means transmits a select operation signal corresponding to the select operation and a shift operation signal corresponding to the shift operation to the gear shift. The gear shift unit is attached to a shift operation system configured to perform a select operation and a shift operation of a transmission, and the select operation signal and the shift operation are performed in place of the shift control means in an emergency. Transmission operation emergency switch with a pair of manual multi-stage switches that output signals to the gear shift unit , Wherein the pair of manual multi-stage changeover switches comprises: a selection manual multi-stage changeover switch for outputting the select operation signal; and a shift manual multi-stage changeover switch for outputting the shift operation signal. .

(Operation) Instead of a select operation signal from the shift control means, a select operation signal is output by a manual multi-stage changeover switch for selection, and a manual multi-stage changeover switch for shift is used instead of a shift operation signal from the shift control means. To output the shift operation signal, whereby the gear shift unit can switch the gear train of the transmission to the select position corresponding to the select operation signal, and subsequently switch the shift operation signal to the corresponding shift position, At the time of this switching operation, the manual multi-stage selector switch operates only as a switch for switching the gear shift unit in the select direction, and the manual manual multi-stage selector switch operates only as a switch for switching the gear shift unit in the shift direction.

(Embodiment) FIG. 1 shows an emergency switch of a speed change operation system as one embodiment of the present invention.

The emergency switch of this shift operation system is mounted on the same one as the shift operation system attached to the vehicle shown in FIG.

The signal processing unit serving as a shift control means includes a control box 10 used during ordinary driving and an emergency switch box 11 used during an emergency.

Here, the gear shift unit 16 in the speed change operation system includes respective air cylinders (not shown) for switching the shift direction and selecting direction, and the air cylinder for shifting is driven by the solenoid valves 18a and 18b, The select air cylinder is driven by the solenoid valves 18c and 18d. This allows
As shown in FIG. 4, the gear train of the transmission is configured to be able to achieve switching to each of the five forward speeds and one reverse speed.

The control box 10 includes a microcomputer, a fuse box 12, and a starter switch 13.
And a switching contact 17 of a first relay 17 for keeping a power supply circuit 19 reaching the gearshift unit 16 from the control circuit 15 in a normally closed state.
1, a switching contact row 211 of a second relay 21 for keeping a valve drive circuit 20 connecting the control circuit 15 and each of the solenoid valves 18 a, 18 b, 18 c, 18 d of the gear shift unit 16 in a normally closed state; First and second relays 17, 21 attached to a first power supply circuit 22 toward an input point a of the switch box 11.
It is composed of

The control circuit 15 receives a shift command signal from a lever position signal generator (not shown) (see FIG. 3), for example, shift command signals SHA, NE, SHB and select command signals SqA, SqB, SqC. A shift output for selectively driving the sixteen four electromagnetic valves 18a, 18b, 18c, 18d is generated.

Here, the control circuit 15 is connected to the service fuse 121 of the fuse box 12. The gear shift unit 16 is selectively connected to the control circuit 15 and the emergency fuse 122 via the switching contact 171 of the first relay. For this reason, the power supply circuit 19 of the gear shift unit 16 is configured such that an emergency fuse 122 can be used instead of the normal fuse 121 which may be disconnected due to abnormal operation of the control circuit 15.

On the other hand, the emergency switch box 11 has an input point a connected to the first power supply circuit 22 and an input point b connected to the second power supply circuit 23, and has a branch circuit 28 connected to the valve drive circuit 20. . Both power supply circuits 22 and 23 are both fuse box 12
Is connected to the emergency fuse 122.

The emergency switch box 11 is provided with a switch panel 24 in which shift and select rotary switches 25 and 26 as manual multi-stage shift switches for shift and select.
And the emergency main switch 27 are supported.

The pair of shift / select rotary switches 25 and 26 include a switch circuit 29, which is connected to a shift switch circuit 291 having three switching contacts and a select switch circuit 292 having three switching contacts. ing. Here, the switch circuit 29 is connected to the shift-side portion of the branch circuit 28 via the contact of the normally closed third relay 30 and the contact of the normally open fourth relay 31. Directly connected to the select side.

Further, the switch circuit 29 is connected to the input point a in parallel via diodes D1 and D2 and the resistors R1 and R2, respectively, and in parallel to the input point b, the operation lamp 32, the select enable indicator lamp 33 and the resistor R3. , R4.

The shift enable indicator lamp 34, the third relay 30, and the fourth relay 31 are connected in parallel to the input point b.

The shift enable indicator lamp 34 is a switch transistor
The emitter is connected to the ground via 37.
The base of this transistor is connected to the input end of the third relay 30.

The third relay 30 is connected to ground via a timer 35. The timer 35 sets a time lag in order to prevent the shift for a certain period of time after the selection is switched.
The shift operation before the completion of the select switching can be prevented. During the time lag, the normally closed switching contact 301 is opened, the shift shift signal is cut off, the switch transistor 37 is turned off, and the shift enable indicator lamp 34 is turned off.

On the other hand, the timer 36 protects the solenoid valves by cutting off the power supply to the solenoid valves 18a and 18b after a lapse of a certain period of time after the shift. The shift signal is output by closing the contact 311 and thereafter the signal is cut off.

The trigger signal of the timer 35 is input at the time of select switching, and the trigger signal of the timer 36 is input at the time of shift switching.

Shift and select switch circuits 291 and 292 each having three switching contacts selectively drive both timers 35 and 36 to low when the contacts at the respective switching positions are turned on. In addition, select enable indicator lamp 33
The ground end of the select rotary switch 26 is grounded only when the shift rotary switch 25 is on the select line N (SH2 position).

In addition, select and shift rotary switches 25,2
6 turns on the select drive portion or the shift drive portion of the branch circuit 28 by turning on the contact point of each switching position to drive each solenoid valve of the gear shift unit 16 selectively.

Shift, select rotary switch 25, 2
6 selectively switches the first, second, third, and fourth relays 17, 21, 30, and 31 and the four solenoid valves of the gear shift unit 16 to obtain five reverse gears, one forward gear and five forward gears. . When a vehicle equipped with such an emergency switch of a shift operation system generally travels, a shift command signal SHA, NE, SHB for designating a shift speed is provided from a lever position signal generator having a shift lever (not shown).
And select command signals sqA, SqB, SqC, SqD are selectively output to the control box 10. As a result, the control circuit 15 of the control box selectively outputs the shift output for obtaining the commanded shift speed to each solenoid valve of the gear shift unit, selectively switches the gear train of five forward steps and one reverse step, and performs the command. General traveling at the shift speed is performed.

On the other hand, in the case of an emergency where the shift operation cannot be performed by the control box 10 side, the emergency switch box 11 is used for emergency traveling.

In an emergency, the driver turns on the emergency main switch 27 and selectively uses the shift and select rotary switches 25 and 26.

Each of the rotary switches 25 and 26 has the N2 position of the select line as a home position and is held at SH2 and Sq2. To switch from this position to the first gear, first, the driver confirms that the operation indicator lamp 32 and the selectable indicator lamp 33 are lit, and turns the select rotary switch 26 to the N1 position (Sq.
1), outputs a select operation signal to the solenoid valve 18c, and switches and moves the gear shift unit 16 to the N1 position.

Then, the third relay 30 is switched to the switching contact for a predetermined time.
301 is opened, and the shift enable display lamp 34 goes out. After a lapse of a predetermined time, the shift enable indicator lamp 34
Turns on, and the driver switches the shift rotary switch 25 to the first speed position (SH3 position). By this switch change,
The fourth relay 31 is turned on, the normally open contact 311 is closed, a shift operation signal is output to the solenoid valves 18a and 18b of the gear shift unit 16, and the shift to the first speed stage is completed. The normally open contact 311 opens, the shift shift signal is cut off, and the solenoid valve is protected.

Similarly, in the case of switching to other gears, a pair of shifts,
Select switching and shift switching of the select rotary switches 25 and 26 are alternately performed, so that switching to the target shift speed can be performed.

(Effects of the Invention) As described above, the present invention alternately switches a pair of manual multi-stage changeover switches for shifting and selecting, and sequentially outputs a select operation signal and a shift operation signal to the gear shift unit in place of the shift control means. The speed stages of the transmission can be switched, and the number of emergency speed stages can be set to the same number as the speed stages of the transmission. In particular, the manual multi-stage changeover switches for selection and shift used here operate as switches for only select operation and only for shift operation. For this reason, the shift operation by these switches is similar to a normal manual shift operation in which the select operation and the shift operation are sequentially separated, and the shift operation by the switch operation is less likely to be uncomfortable, and the shift operation is performed with good operability. I can do it.

[Brief description of the drawings]

FIG. 1 is an electric circuit diagram of an emergency switch of a shift operation system according to an embodiment of the present invention, FIG. 2 is a front view of a switch panel used in the apparatus of FIG. 1, and FIG. 3 is a shift operation with an emergency switch. FIG. 4 is a shift pattern diagram of the device shown in FIG. 1, and FIG. 5 is a front view of a switch panel of a conventional emergency switch. 10 Control box, 11 Emergency switch box, 15 Control circuit, 16 Gear shift unit, 24 Switch panel, 25, 26 Rotary switch, 29 Switch circuit.

Claims (1)

(57) [Scope of request for utility model registration] A gear shift unit capable of performing a select operation corresponding to an operation of a shift lever in a select direction and a shift operation corresponding to an operation of a shift lever in a shift direction, and controls a shift command signal for designating a shift speed. The shift control means outputs a select operation signal corresponding to the select operation and a shift operation signal corresponding to the shift operation to the gear shift unit, and the gear shift unit performs a select operation and a shift operation of the transmission. A shift operation system provided with a pair of manual multi-stage changeover switches for outputting the select operation signal and the shift operation signal to the gear shift unit instead of the shift control means in an emergency. In the emergency switch of the operation system, the pair of manual multi-stage changeover switches is Emergency switch speed change operation system characterized manual multistage changeover switch for selecting for outputting a preparative operation signal, and a manual multi-stage change-over switch for shifting and outputting the shift operation signal, in that it consists of.