JPH0641787B2 - Remote control device for transmission - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a remote control device for a transmission that uses auxiliary power to remotely control the transmission.

[Conventional technology]

In recent years, buses have become large in size, and engines are mounted on the rear part of the vehicle body. Along with this, a transmission is also installed at the rear of the vehicle body. Conventionally, in order to control this transmission, when a driver operates a change lever, the operating force is transmitted to the transmission at the rear of the vehicle body via a link mechanism.

Since a large force is required to operate the transmission configured as described above, in recent years, in order to facilitate the operation, the auxiliary power using compressed air is used to shift gears, and the auxiliary power is controlled. It has been proposed to perform light gear shifting by operating a lever, as in a passenger car. When the auxiliary power is used for gear shifting, the gear shifting can be performed lightly. However, since this device uses auxiliary power using compressed air, the operating time is short and the meshing time required for gear shifting cannot be secured. Therefore, in order to secure this meshing time, Japanese Utility Model Publication No. 56-42525 discloses. Insert a throttle valve in the passage of compressed air, as disclosed,
When the transmission is in shift operation, the compressed air passage is narrowed to delay the operation time of the transmission.

[Problems to be solved by the invention]

However, in such a conventional device, even if the throttle valve operates, its effect appears with a delay, so when the chain lever is suddenly operated in the same select position, the effect of the throttle valve cannot be expected and still remains. There is a drawback in that the meshing time cannot be secured and gear noise occurs.

[Means for solving problems]

In order to solve such a drawback, the present invention is provided with a neutral position holding means for keeping the gear of the transmission in the neutral position state for a predetermined time or more.

[Action]

By holding the gear of the transmission in the neutral position for a predetermined time, the time for the throttle valve to operate effectively is secured.

〔Example〕

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a flow chart showing the operation of the apparatus shown in FIG. 1, and FIG.
The drawing is a block diagram of the remote control device showing the gear shift unit portion in FIG. 1 in more detail.

In FIGS. 1 and 3, 10 is a gear shift unit that is placed at the rear of the vehicle body for gear shifting, 20 is a clutch, 30 is a chain lever unit for the driver to perform gear shifting operation, and 40 is a clutch 20, chain lever. The control unit generates a control signal for shifting gears based on the signals supplied from the unit 30 and the gear shift unit 10. The gear shift unit 10 includes a transmission 11, a select unit 12, and a shift unit 1.
3, an air reservoir 14, magnet valves 15a to 15d for opening and closing an air passage according to an electric signal supplied,
The transmissions 11 are composed of switches 16a to 16c for generating a signal indicating the selected state, switches 17a to 17c for indicating the shifted state, and a throttle valve 18. The chain lever unit 30 is the chain lever 30
A signal representing the operation position of a is generated. The control unit 40 is composed of a control circuit 41 and a delay circuit 42. The control circuit 41 has signals for controlling the magnet valves 15a, 15b for controlling the shift direction and the magnet valve 15 for controlling the select direction.
Signals for controlling c and 15d are transmitted, but the former is further output through the delay circuit 42.

The throttle valve 18 is operated to a shift position where the change lever unit 30 is moved to a position different from the original position, and the switch 17
From the time when a signal indicating that the transmission 11 has reached the neutral position is sent from b, the clutch 20 is operated until it is turned on (contact).

The operation of the apparatus configured as described above will be described based on the flow chart shown in FIG. In FIG. 2, it is determined in step 100 "whether the clutch is off". If "NO", as shown in step 101, "all magnet valve off" processing is performed, and the process returns to step 100. When the clutch 20 is stepped on, it is judged "YES" in step 100, and the processing of "magnet valve on corresponding to the current speed change state" shown in step 102 is performed. Since this processing sets the gear position to the current speed change state and ensures reliability, the gear shift / select position is not changed by this processing.

The shift position means the transmission 11 shown in FIG.
Is a position in the vertical direction, that is, the 1-R direction, the 2-3 direction, and the 4-5 direction, and the select position is the horizontal direction, that is, N.
It is defined as the position in the 1-N2-N3 direction.

Next, in step 103, it is determined that the select positions match, and it is determined whether the select position of the gear chain unit 10 and the select position of the chain lever unit match. When there is a change in the select position,
That is, when the driver operates the change lever 30a in the select direction, this step is determined to be "NO",
At step 104, it is judged whether the position is "neutral position". At this time, if "YES", the routine proceeds to step 107, where "gear select" treatment is performed. Step 1
If "NO" in 04, the process of "shift to neutral position" shown in step 105 is performed. This process is executed by turning on the magnet valves 15a and 15b. Then, in step 106, it is judged "whether the neutral state is reached", and if "NO", the process returns to step 105, but eventually the neutral position is reached, and step 1
06 is determined as “YES”.

If step 106 determines "YES", the "gear select" processing shown in step 107 is performed. In this process, the control circuit 41 sends a signal for turning on both or either of the magnet valves 15c and 15d so that the selected position is designated by the chain lever 30a. As a result, the striker (not shown) of the gear shift unit 10 moves in the neutral position,
That is, the selecting operation of the select position is performed. When the striker finishes moving at the selected position, the "selected positions match" shown in step 108 is "YES".
Is judged.

Thereafter, if "the shift positions match" shown in step 109 is judged to be "NO", the judgment "whether it is the neutral position" shown in step 110 is made, and if this step is "YES", the step shown in step 113 is shown. Processing of "throttle valve on"
If "NO", the process of "throttle valve ON" of step 113 is performed after shifting to the neutral position of steps 111 and 112. Next, as shown in step 114, the "timer on" process and the "timer off" determination shown in step 115 are performed. Since the next operation is not performed during this period, the gear remains in the neutral position for a predetermined time, during which the effect of the throttle valve appears and the meshing time is secured. Then, if the determination in step 115 is “YES”, the flow proceeds to step 116.

In step 116, it is determined whether or not the position of the change lever 30a and the shift position match, but here, since the gear has not been shifted, it is determined to be "NO". Therefore, the "gear shift" shown in step 117 is performed.
Since step 116 is again performed after the above step, the gear shift is completed, step 116 is judged to be "YES", and the flow returns to step 100 to end the gear shift and select operations.

In step 103, "the select positions match" is "Y.
If “ES” is determined, the flow proceeds to step 109.

FIG. 4 is a circuit diagram showing details of the delay circuit 42 in FIG. In the figure, 42a is a monostable multivibrator, 42b and 42c are latches, 42d is an inverter, 42e is a resistor, and 42f is a capacitor. The latches 42b and 42c operate as shown in Table 1. However, × mark may be either a "1" level or "0" level in Table 1, Q ₀ represents an output level immediately before the terminal G becomes "0" level.

When the change lever 30a is shifted from, for example, the fifth speed to the fourth speed position, the control circuit 41 causes the magnet valve 1 to move.
A signal for operating 5a and 15b is transmitted. At this time, since the switch 17b is off, the monomultivibrator 42a does not operate, and therefore the latches 42b and 42c output the input signals as they are to the terminals a and b. As a result, the magnet valves 15a and 15b are operated and gears are removed.

When the gear reaches the neutral position N3, the control circuit 41
Sends a signal for turning on the throttle valve 18 and a signal showing that the gear has reached the neutral position from the switch 17b. This causes the mono-multivibrator 42a to operate, so that the latch 42
b and 42c hold signals representing the state immediately before the operation of the mono multivibrator 42a. As a result, the gear is maintained in the neutral position during the operation period of the mono-multi vibrator 42. During this time, the effect of the throttle valve appears, so that the fourth operation after the operation of the mono-multivibrator 42a is completed.
When the gear is put into the high speed, the force of the compressed air becomes small, the work is performed slowly, the meshing time is secured, and no gear squeal occurs.

〔The invention's effect〕

As described above, according to the present invention, since the gear shift unit performs the shift operation after the gear shift unit stays at the neutral position for the predetermined time or more, the effect of the throttle valve can be sufficiently exerted and the gear squeal can be prevented. Have.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a flow chart showing the operation of the apparatus shown in FIG. 1, and FIG.
FIG. 4 is a block diagram showing the details of the gear shift unit of the apparatus shown in FIG. 1, and FIG. 4 is a circuit diagram showing the details of the delay circuit of the apparatus shown in FIG. 10 ... Gear shift unit, 20 ... Clutch, 30
…… Changing lever unit, 40 …… Control unit, 41 ・ ・ ・
... control circuit, 42 ... delay circuit.

Claims (1)

[Claims] 1. A remote control device for a transmission, wherein a driver operates a change lever unit to control auxiliary power, and the power of the auxiliary power performs shift / select operation of the transmission. A throttle valve for controlling the increase / decrease of power and a throttle valve for reducing the auxiliary power output from the throttle valve by detecting that the gear is controlled to the neutral position during the shift operation of the transmission. A throttle valve control means for controlling, and a neutral position holding means for detecting that the gear of the transmission is controlled to a neutral position state and holding the controlled neutral position state for a predetermined time or more. Remote control device for transmission.