JPH0718065U - Electric auto change - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] With regard to electric auto-change that electrically changes gears, the aim is to simplify the gear change operation when the vehicle is stopped. [Structure] In a vehicle automatic change in which a switching signal is generated from a switch operation unit to drive an actuator and a transmission is switched to a predetermined gear shift range, a parameter related to a driver's driving intention is detected by a driving intention sensor, The discriminating means discriminates that there is no driving intention based on the detected parameter, and when there is no driving intention, the switching control means switches the transmission to the neutral range to eliminate the shift shock, and then switches to the parking range.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electric auto change for electrically performing a gear shift operation, and particularly to an auto change capable of automatically changing to a parking range under a specific condition.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, in vehicles, a gear shift operation device has been widely used in which the operation of a change lever is transmitted to a transmission by a cable or a rod to perform a gear shift operation.

On the other hand, with recent breakthroughs in computer technology, a shift range is selected by push operation of a switch operation unit, etc., and a drive signal is generated based on the selection of a shift range to drive an actuator such as a drive motor. Various electric auto-changes have been proposed in which the transmission is controlled to be switched to a parking P, reverse R, neutral N, drive D, second S, or low L shift range (for example, actual opening 60-. 168629).

[0004]

[Problems to be solved by the device]

 By the way, in a vehicle, it is possible to judge the driver's willingness to drive based on the vehicle speed, ignition ON / OFF, seat belt attachment / detachment, or brake state. If it is configured to switch to the parking range P, it is expected that the shift range switching operation when the vehicle is stopped can be simplified and the reliability and safety can be guaranteed.

However, in this case, if the gear shift range of the drive D, the second S or the like is directly switched to the parking range P, an occupant of the vehicle is given a jerk gear shift shock, which is not preferable.

In view of the above point, an object of the present invention is to provide an electric auto change capable of automatically changing to a parking range without causing a shift shock when the vehicle is stopped.

[0007]

[Means for Solving the Problems]

 Therefore, the electric auto change according to the present invention is a parameter related to the driver's driving intention in the vehicle auto change in which a switching signal is generated from the switch operation unit to drive the actuator and the transmission is switched to a predetermined shift range. A drive intention sensor that detects the vehicle speed, a determination means that determines from the detected parameters that there is no drive intention, and a switching control that switches the transmission to the neutral range and then to the parking range when it is determined that there is no drive intention. The point is that the means is provided.

Here, the parameters relating to the driver's intention include vehicle speed, ignition ignition ON / OFF, seat belt attachment / detachment, parking brake operating state, brake switch ON / OFF, and the like. If the driver has no intention to drive, for example, if the vehicle speed is 3 Km / H or less with the ignition off and the seat belt is removed and the vehicle speed is 3 Km / H or less and the brake switch is OFF, the parking brake is activated and the vehicle speed is reduced. When the speed is 3 Km / H or less and the brake switch is OFF.

Further, the structure of the electric auto change may be any structure as long as the gear shift operation is performed by the switch operation. For example, the switch operation unit may be of push button type, dial type, or lever type. In addition, a signal line may be connected between the switch operation section and the micro computer, or signals may be exchanged by radio waves or the like. Further, although a drive motor can be used as the actuator, other drive sources may be used.

[0010]

In the present invention, the parameter related to the driver's intention is detected to determine whether the driver has the driver's intention, and if the driver has no driver's intention, the transmission is automatically switched to the parking range. As a result, the operation of changing the shift range when the vehicle is stopped is simplified and reliability is guaranteed.

At this time, since the driving range is once switched to the neutral range and then the parking range is switched, a shift shock unlike the case of directly switching from the driving range to the parking range does not occur, and smooth shifting is possible. It is possible.

[0012]

【Example】

 Hereinafter, the present invention will be described in detail based on specific examples shown in the drawings. 1 to 5 show an electric automatic change according to an embodiment of the present invention. In the figure, a remote control switch 2 for gear shift operation is detachably attached to a central concave portion of a handle 1, and a switching signal of the remote control switch 2 is input to a vehicle-mounted control unit 3, which is a remote control switch. The drive signal is generated by calculating the switching signal from 2 and other sensor signals to drive the main and sub drive motors 4a and 4b, while the vehicle speed, the ignition ignition is turned on and off, and the seat belt is turned on and off. Whether or not there is a driving intention is determined based on the attachment / detachment, the operation state of the parking brake, the brake switch state, and the attached / detached state of the remote control switch 2. When it is determined that there is no driving intention, the shift range is switched to the neutral N, and then the parking P is automatically operated. It is configured to switch dynamically.

Further, in FIG. 3, 3 is a control unit for controlling the drive of the drive motors 4a and 4b and display of the motors, and 6a and 6b are indoor light receiving portions for receiving the signals of the remote control switch 2 and in-case light receiving portions. , 6c is an attachment / detachment detection sensor for detecting attachment / detachment of the remote control switch 2, 6d is an inhibitor switch for detecting a gear shift range of the transmission, 6e is a position sensor for detecting rotational positions of the drive motors 4a, 4b, and 6f is a vehicle speed. The vehicle speed sensor, 6g is an ignition switch that detects ON / OFF of the ignition, 6h is a brake switch that detects the depression of the brake pedal, 6i is a parking brake switch that detects the operation of the parking brake, and 6j is the wearing of a seat belt. Seat belt switch for detection, 6k for drive motors 4a, 4b It is a motor indicator that displays the operation of. Further, 7a to 7f are reminder switches for forgetting with the remote control switch 2 removed.

4 and 5 are flowcharts of the control system in this embodiment, FIG. 4 is a main routine, and FIG. 5 is an automatic parking routine.

Next, the operation will be described using a flowchart. In the control unit 3, as shown in FIG. 4, first, a control system is initially set (step S1), signals of various switches are input (step S2), and vehicle speed and ignition / ignition are turned on / off in automatic parking processing. The presence / absence of a driving intention is determined from the OFF, seat belt attachment / detachment, parking brake operating state, brake switch state, or remote control switch 2 attachment / detachment state, and when it is determined that there is no driving intention, the shift range is switched to neutral N. After performing the processing for automatically switching to the parking P (step S3), the processing content of the switching signal of the switch operation unit 2 is determined (steps S4 to S9), and parking or reverse is performed according to the determination result. , Neutral, drive, second or low gear shifting Speed machine 4e is switched to a predetermined range (step S10~S 15).

Next, the contents of the automatic parking process will be described in detail. In the automatic parking process, as shown in FIG. 5, it is first determined whether or not the ignition switch is ON (step S301). If the ignition switch is ON, it means that the vehicle is in a running state and therefore the parking brake is activated. Whether or not the seat belt is worn, it is determined whether the attachment / detachment detection sensor 6c is ON (remove) or OFF (load) (steps S302 to S304). If the parking brake is not operated, the seat belt is worn, and the remote control switch 2 is loaded, it is determined that there is an intention to continue driving, the attachment / detachment flag is set to 1 and the process ends (step S305). ).

When the ignition switch is OFF, it is determined whether or not the neutral inhibitory switch is ON (step S306). In the neutral state, it is determined that the automatic parking process is unnecessary and the process is terminated as it is. .

On the other hand, when it is not in the neutral state, it is determined whether the brake switch is ON or OFF (step S307), and when the brake switch is OFF, it is determined whether the vehicle speed is 3 Km / H or less (step S308). ) When the vehicle speed is 3 Km / H or less, it is determined that there is no intention to drive the vehicle when the vehicle enters the stopped state, the motor operation routine is processed, and the transmission 4e is once set to the neutral range N and then changed to the parking range P. Then, the process ends (step S309). If the vehicle speed is 3 km / h or higher, the automatic parking process should not be performed because the vehicle is still in a traveling state, and the process ends. As described above, the transmission 4e is automatically shifted to the parking range P via the neutral range N when the ignition is OFF and the vehicle speed is 3 Km / H or less.

When the brake switch is ON, the process proceeds to step S304 described above, and it is determined whether the wear / non-wear detection sensor 6c is ON / OFF. If the remote control switch 2 is not attached, it is determined whether the attachment / detachment flag is 1 (step S310), and if the attachment / detachment flag is 1, it is determined whether the vehicle speed is 3 Km / H or less (step S31 1). ). If the vehicle speed is 3 Km / H or less, the condition for automatic parking is set. Therefore, the attachment / detachment flag is set to 0 (step S312), the motor operation routine is processed (step S309), and the neutral range N is set. The speed is changed to the parking range P and the process ends.

When the ignition switch is ON and the parking brake is operated or the seat belt is removed (steps S302 and S303), the process proceeds to step S307 described above and the braking is performed. The state of the switch is determined, and the processing from step S308 or step S304 is executed according to the determination result. When the seat belt is removed, the vehicle speed is 3 Km / H or less, and the brake switch is OFF, and the parking brake Is operated and the vehicle speed is 3 Km / H or less and the brake switch is OFF, the transmission 4e is shifted to the parking range P via the neutral N.

On the other hand, when the attachment / detachment flag is 0, or when the vehicle speed is 3 Km / H or more, the automatic parking is not necessary, or the vehicle is in a running state, and the automatic parking condition is not satisfied. The process ends.

In the above-described electric automatic change of the present embodiment, the intention to continue driving is determined from the parameter related to the driver's intention, and when there is no driving intention, the transmission 4e is automatically set to the parking range P. Since it is switched to, it is possible to simplify the gear range switching operation when the vehicle is stopped and guarantee the reliability of the vehicle stop.

In addition, in the electric auto change of the present embodiment, since the running range is switched to the neutral range N and then to the parking range P, a shift shock such as when directly switching from the running range to the parking range occurs. Without doing so, it does not cause a jarring shift shock to the occupants and enables smooth automatic parking operation.

[0024]

[Effect of device]

 As described above, according to the electric auto change according to the present invention, in the vehicle auto change in which the actuator is driven by generating the switching signal from the switch operating unit and the transmission is switched to the predetermined shift range, A driving intention sensor that detects parameters related to driving intention, a determination means that determines that there is no driving intention based on the detected parameters, and after switching the transmission to the neutral range when it is determined that there is no driving intention. Since a switching control means for switching to the parking range is provided, the transmission can be automatically switched to the parking range without causing the driver to feel a jerky shift shock when the driver has no intention to drive. In addition, it is possible to simplify the shifting operation when the vehicle is stopped and to ensure the reliability and safety when the vehicle is stopped. .

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an electric automatic change according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view showing a part of the auto change.

FIG. 3 is a functional block diagram showing a shift control system in the automatic change.

FIG. 4 is a flowchart showing a main routine of shift control in the automatic change.

FIG. 5 is a flowchart showing an automatic parking routine in the automatic change.

[Explanation of symbols]

 2 Remote control switch 3 Control unit 4 Actuator 4e Transmission 6f Vehicle speed sensor 6g Ignition sensor 6h Brake switch 6i Parking brake switch 6j Seat belt sensor

Claims (1)

[Scope of utility model registration request] 1. A vehicle auto-change in which a switching signal is generated from a switch operating section 2 to drive an actuator 4 to switch a transmission 4e to a predetermined shift range, and a parameter related to a driver's driving intention is detected. Driving intention sensors 6f, 6g, 6i, 6j, a judging means 3 for judging that there is no driving intention based on the detected parameters, and the transmission 4e when it is judged that there is no driving intention.
And a switching control means 3 for switching to the neutral range and then to the parking range.