JPH0473033B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention provides a speed change command to a controller by operating a select switch, operates an electromagnetic means based on the control command of the controller, and uses the electromagnetic means to automatically change the speed. The present invention relates to a transmission device for an automatic transmission that switches a manual valve of the transmission to a shift position corresponding to a shift command.

(Prior Art) As disclosed in Utility Model Application No. 57-25237, there has been known a transmission device for an automatic transmission in which a manual valve of the automatic transmission is switched to each shift position by operating a select switch. It is being

This conventional automatic transmission transmission device includes a select switch that issues a gear change command, and an electromagnetic means that switches the manual valve of the automatic transmission to each gear shift position.
The electromagnetic means has a controller that receives a speed change command from a select switch and issues a control command to the electromagnetic means so that the manual valve is switched to a speed change position corresponding to the speed change command.

This conventional automatic transmission transmission device switches the manual valve of the automatic transmission to each shift position based on the operation of a select switch, and each time the vehicle stops, the select switch is operated to change the shift position. It is necessary to switch to the stop range of N range or P range, which is a cumbersome operation.

In addition, if the vehicle is controlled to simply determine whether the vehicle is stopped by detecting the vehicle speed and switch the gear position to the stop range, unnecessary switching of the gear position may occur when the vehicle immediately starts driving, such as from a temporary stop. I have a problem with doing this.

(Object of the Invention) The present invention has been made in view of the above circumstances, and is designed to automatically switch the shift position of the automatic transmission to the stop range without operating the select switch when the vehicle is stopped. It is an object of the present invention to provide a transmission device for an automatic transmission that is easy to operate, and to eliminate the troublesome operation by a driver.

(Structure of the Invention) A transmission device for an automatic transmission according to the present invention provides a controller having a manual control section and an automatic control section that control the operation of electromagnetic means for switching a manual valve of an automatic transmission to each shift position. While commanding the operating position of the electromagnetic means to the manual control section using the select switch, the operating state of the engine is detected by the engine state detecting means, the stopped state of the vehicle is detected by the vehicle state detecting means based on the operating state of the parking brake, and the above-mentioned The automatic control section of the controller receives the outputs of the engine state detection means and the vehicle state detection means, determines when the parking brake is activated while the engine is operating, and receives the output of the determination means. The stop range switching means is characterized in that the stop range switching means outputs a signal for switching the shift position to the stop range to the electromagnetic means.

(Effects of the Invention) When the engine is operating and the vehicle is stopped, that is, when it is necessary to change the shift position of the automatic transmission from the drive range to the stop range, this state is detected by the engine state detection means and the vehicle state. The detection means detects this, the determination means of the automatic control section of the controller makes a determination, the stop range switching means outputs a signal for switching the shift position to the stop range range, and the electromagnetic means outputs a signal for switching the shift position to the stop range range. Since the driver can automatically switch to the stop range, there is no need for the driver to operate the select switch every time the driver stops, eliminating the hassle of operating the select switch. The improvement effect can be fully exhibited. Furthermore, even if the accelerator is operated by mistake while the vehicle is stopped, the vehicle will not start.

In particular, since the stopped state of the vehicle is detected by the operation of the parking brake, unnecessary switching can be prevented by switching to the stopping range only when the driver is truly conscious of stopping.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall configuration diagram clearly showing the configuration of the present invention.

A manual valve of an automatic transmission 2 connected to an engine 1 is switched to each shift position by the operation of an electromagnetic means 3 such as a motor or a solenoid. The operation of the electromagnetic means 3 is controlled by a controller 4, which has a manual control section 5 and an automatic control section 6, and the manual control section 5 has a select switch for commanding the operating position of the electromagnetic means 3. This select switch 7 has a P range switch, an R range switch, an N range switch, a D range switch, a 2nd speed range switch, and a 1st speed range switch. Here, the select switch 7 has a self-resetting push button configuration.

On the other hand, the automatic control section 6 of the controller 4 has a determining means 8 and a stop range switching means 9, and the determining means 8 includes an engine state detecting means 10 that detects the operating state of the engine 1 from, for example, an alternator operating signal. A vehicle in which the engine 1 is operating and the parking brake is operating to generate control force in response to the output signal and the output signal of the vehicle state detection means 11 that detects the stopped state of the vehicle from the operation of the parking brake. determines whether the vehicle is stopped and outputs a signal. Further, the stop range switching means 9 includes:
Upon receiving the output signal of the determination means 8, it outputs a signal to the electromagnetic means 3 to switch the gear shift position to the N range or the P range, which is the stop range, when the engine 1 is running and the parking brake is activated. When the vehicle is stopped, the controller 4 operates the electromagnetic means 3 to automatically switch the shift position to the stop range.

Figure 2 shows the specific configuration. 15 is a power timer circuit, 16 is an input circuit, 17 is a logic circuit, 18
Reference numeral 19 indicates a drive circuit, and 19 indicates a display circuit.

The power timer circuit 15 receives the voltage B of the battery 20, the ignition signal Ig via the ignition switch 21, and the vehicle speed signal V, and supplies power to the control system.

The input circuit 16 receives signals P, R, N, D, 2, 1 from each range switch of the select switch 7, an engine operating signal E from an alternator (not shown), an accelerator opening signal A, and a vehicle speed detection pulse signal V.
and a parking brake (not shown) actuation signal IPB, and outputs it to the logic circuit 17 as a signal corresponding to each detected amount.

The logic circuit 17 has storage means, and the input circuit 16
In response to each signal from the automatic transmission 2, the shift position of the automatic transmission 2 is calculated, and a predetermined shift command signal is sent to the drive circuit 1.
8, and the drive circuit 18 outputs to this logic circuit 1.
In response to the command signal from 7, a drive signal for forward or reverse rotation is output to the motor, which is the electromagnetic means 3 of the automatic transmission 2, to switch the gear position, and this switching position is controlled by the potentiometer 22. detected and the drive circuit 18 is connected to the potentiometer 22
The detection signal and the command signal are compared, and the shift operation is performed to a predetermined shift position where the two match.

Further, the display circuit 19 displays a shift range using an LED element or the like corresponding to a predetermined shift position in response to a detection signal from a potentiometer 22 linked to the operation of the drive circuit 18.

The operation of the controller 4, ie, the contents of the logic circuit 17 shown in FIG. 2, will be explained with reference to the flowchart shown in FIG.

After the start, in step 40, check whether engine 1 is running by checking the alternator's L terminal signal E.
If the engine 1 is in the operating state (YES), it is determined in step 41 whether or not the driving range button has been pressed by the select switch 7, based on the presence or absence of the command signal, and the driving range is changed. When the button is pressed (YES), the driving range pressed in step 42 is memorized, and the ON display for that range is flashed on the display circuit 19.

Next, in step 43, it is determined based on the signal A of the accelerator switch 24 whether or not there is a start signal, and if there is no start signal, it is determined in step 44 whether or not a button for another driving range has been pressed. Wait until a start signal is generated and the judgment in step 43 becomes YES, and when there is a start signal, in step 45 the vehicle shifts to the driving range memorized in step 42, the ON display is lit continuously, and the driving state is changed in step 46. Move to.

When stopping the vehicle, it is determined in step 47 whether there is a stop signal or not based on the accelerator fully closed signal and the parking brake activation signal, and if the stop signal is YES, the vehicle is switched from the driving range to the N range in step 48. (P range may also be acceptable) and the process ends.

To explain each circuit in FIG. 2 in more detail, as shown in FIG. This is done in response to the signal Ig and the vehicle speed signal V, and even if the ignition switch 21 is opened, the main switching relay R does not stop operating for the time set by the capacitor timer 23, and the power supply is closed. As a result, the electromagnetic means 3 can be operated to switch to the P range, for example, while the relay R remains closed even if the ignition switch 21 is turned off when the vehicle speed V is detected. This makes it possible to shift to P range or the like after stopping the vehicle.

As shown in FIG. 5, the input circuit 16 receives an alternator L terminal signal E, a parking brake activation signal IPB, and an accelerator switch 24 opening signal A.
(accelerator fully closed signal), which outputs them as high level or low level signals from each output terminal when each range signal P, R, N, D, 2, 1 of the select switch 7 is input respectively. The vehicle speed pulse signal V outputs a high level signal when the vehicle speed is above a set value, and outputs a low level signal when the vehicle speed is less than the set value.

The drive circuit 18, as shown in FIG.
A comparison unit 25 compares a reference signal based on the shift position command signal calculated by the logic circuit 17 and a detection signal of the potentiometer 22 that detects the switching position of the electromagnetic means 3, and drives the transistor so that the two match. The unit 26 outputs a signal for forward rotation or reverse rotation to the electromagnetic means 3 (motor), and when the command signal and the detection signal match, the electromagnetic means 3 is configured to be stopped.

As shown in FIG. 7, the display circuit 19 uses each comparator 28 to compare the detection signal of the potentiometer 22 with each reference signal set by a plurality of resistors 27 connected in series, and calculates the potentiometer. meter 22
When the gear is at a predetermined gear shift position, a corresponding LED element or the like indicator lights up.

Therefore, according to the above embodiment, when the driving state shifts to the stopped state with the parking brake activated, the controller 4 detects this by the engine state detecting means 10 and the vehicle state detecting means 11, and the controller 4 detects this by the electromagnetic means 3. By outputting a signal to change the gear shift position to the stop range, the shift range is automatically switched to the stop range without manual operation of the select switch 7, eliminating unnecessary shifts in the shift position, and providing driver's convenience. Operation is simplified.

In the above embodiment, the stopped state of the vehicle is detected by the accelerator fully closed signal and the parking brake activation signal, but in a vehicle having an electric parking brake, the stopped state is detected by detecting the activation of the electric parking brake. This is what we do. Furthermore, it goes without saying that the controller may perform control using either analog control or digital control.

[Brief explanation of the drawing]

Fig. 1 is an overall configuration diagram to clearly show the configuration of the present invention, Fig. 2 is a main part configuration diagram showing a specific structural example of the invention, and Fig. 3 is a flowchart diagram showing an example of the logic circuit of the controller. , FIG. 4 is an electrical circuit diagram showing a specific example of a power timer circuit, FIG. 5 is an electrical circuit diagram showing a specific example of an input circuit, FIG. 6 is an electrical circuit diagram showing a specific example of a drive circuit, and FIG. 7 is an electrical circuit diagram showing a specific example of a drive circuit. FIG. 2 is an electric circuit diagram showing a specific example of a display circuit. 2... Automatic transmission, 3... Electromagnetic means, 4... Controller, 5... Manual control section, 6... Automatic control section, 7... Select switch, 8... Judgment means, 9... Stop range switching Means, 10...engine state detection means, 11...vehicle state detection means.

Claims (1)

[Claims] 1. An electromagnetic means for switching a manual valve of an automatic transmission to each shift position, a controller having a manual control section and an automatic control section and controlling the operation of the electromagnetic means, and a controller for instructing the manual control section to operate the electromagnetic means. a select switch for detecting the operating state of the engine; and an engine state detection means for detecting the operating state of the engine.
and a vehicle state detection means for detecting a stopped state of the vehicle based on the operating state of the parking brake, and the automatic control section of the controller receives outputs from the engine state detection means and the vehicle state detection means,
The present invention includes a determining means for determining when the engine is operating and the parking brake is activated, and a stop range switching means for receiving the output of the determining means and outputting a signal for switching the shift position to the stop range to the electromagnetic means. Characteristic automatic transmission gearbox.