JPH0718064U - Electric auto change - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] With regard to electric auto-change that electrically changes gears, simplifies the gear change operation when the vehicle is stopped. [Structure] A seat belt sensor that detects wearing of a seat belt and a vehicle speed that detects a vehicle speed in a vehicle auto change in which a switching signal is generated from a switch operation unit to drive an actuator to switch a transmission to a predetermined shift range. A sensor, a brake sensor for detecting the depression of the brake, and a switching control means for switching the transmission to the parking range when the seat belt is removed and the brake is not depressed at a predetermined low vehicle speed or less are provided. Automatically switch the transmission to the parking range when there is no intention to drive.

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, considering the state when the vehicle is stopped, it is common that the brake is stepped on to reduce the speed immediately before the vehicle is stopped, and the seat belt is usually removed when the vehicle is stopped and the brake is released. Therefore, it is possible to judge the driving intention of the driver from the vehicle speed, the seat belt attachment / detachment, and the brake state, and it is possible to automatically switch to the parking range P under specific conditions in the above electric auto change. 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.

In view of the above points, an object of the present invention is to provide an electric automatic change capable of simplifying a shift range switching operation when a vehicle is stopped and ensuring reliability and safety.

[0007]

[Means for Solving the Problems]

 Therefore, the electric auto change according to the present invention is a seat belt that detects the wearing of a seat belt in a vehicle auto change in which a switch operating portion generates a switching signal to drive an actuator to switch the transmission to a predetermined shift range. A sensor, a vehicle speed sensor that detects the vehicle speed, a brake sensor that detects the depression of the brake, and a switch that switches the transmission to the parking range when the seat belt is removed and the brake is not depressed at a predetermined low vehicle speed or lower. The main point is that control means is provided.

Here, the structure of the electric automatic change may be any structure as long as a gear shift operation is performed by a 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.

[0009]

[Action]

 In the present invention, when the seat belt is removed under a predetermined vehicle speed and the brake is not stepped on, it is judged that there is no intention to drive and the transmission is automatically switched to the parking range. In addition, the operation of changing the shift range when the vehicle is stopped is simplified, and reliability and safety are secured.

At this time, when the transmission is in the reverse range, the switching to the parking range is prohibited, so that the transmission does not shift to the parking range even if the seat belt is removed during reverse travel. The seat belt does not get in the way when the vehicle goes backwards.

[0011]

【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 recess of a handle 1, and a switching signal of the remote control switch 2 is input to a vehicle-mounted control unit 3. The control unit 3 performs arithmetic processing of the switching signal from the remote control switch 2 and other sensor signals to generate a drive signal, and drives the main and sub drive motors 4a and 4b, while the vehicle speed and ignition ON / OFF, seat belt attachment / detachment, parking brake operation status, brake switch status and remote control switch 2 attachment / detachment status are used to determine whether or not there is a driver's intention. It is configured to automatically switch to. In this embodiment, in addition to the vehicle speed, the seat belt attachment / detachment and the brake switch state, the driver's intention is determined based on the ignition ON / OFF, the parking brake operation state and the remote control switch 2 attachment / detachment state. However, these are not necessarily required.

Further, in FIG. 3, 3 is a control unit for controlling the drive of the drive motors 4a, 4b and display of the motors, and 6a, 6b are indoor light receiving portions for receiving the signals of the remote control switch 2 and light receiving portions in the case. , 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. 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 set in the automatic parking process. ON / OFF, seat belt attachment / detachment, parking brake operation status, brake switch status or remote control switch 2 attachment / detachment status is determined, and when it is determined that there is no operation intention, the gear shift range is parked. After performing the process of automatically switching to P (step S3), the processing content of the switching signal of the switch operating unit 2 is determined (steps S4 to S9), and parking, reverse, neutral, drive are performed according to the determination result. , Second or low speed change processing is performed and transmission 4e is The range is switched to a fixed range (steps S10 to S15). Note that it is desirable to automatically switch to the parking range P after first switching to the neutral range N and then to the parking range P due to a shift shock.

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). ) If the vehicle speed is 3 Km / H or less, it is determined that there is no intention to drive when the vehicle enters the stopped state, the motor operation routine is processed, the transmission 4e is shifted to the parking range P, and the processing is terminated ( In step S309), when the vehicle speed is 3 Km / H or more, the vehicle is still in the traveling state and the automatic parking process should not be performed, so the process ends. In this way, the transmission 4e is automatically shifted to the parking range P 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), and the motor operation routine is processed (step S309) to shift to the parking range P. Ends the process.

When the ignition switch is ON and the parking brake is operated (step S302), the process proceeds to step S307 described above to determine the state of the brake switch. In response, the processing from step S308 or step S304 is executed, and when the parking brake is actuated 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. .

If the ignition switch is ON and the seat belt is removed (step S303), the process proceeds to step S307 described above to determine the state of the brake switch, and depending on the determination result, If the seat belt is removed, the vehicle speed is 3 Km / H or less, and the brake switch is OFF, that is, if the brake pedal is released, the transmission 4e is parked. Shift processing is performed to the range P.

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 electric automatic change of the present embodiment as described above, the intention to continue driving is determined from the vehicle speed, the seat belt attachment / detachment and the brake pedal depression, and when there is no driving intention, the transmission 4e is automatically set to the parking range. Since it is switched to P, not only can the shift range switching operation when the vehicle is stopped simplified, but the reliability and safety of the vehicle stop can be guaranteed.

[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 switching operation unit generates the switching signal to drive the actuator to switch the transmission to a predetermined shift range, the seat belt A seat belt sensor that detects the wearing, a vehicle speed sensor that detects the vehicle speed, a brake sensor that detects the depression of the brake, and a transmission when the seat belt is removed and the brake is not depressed below a predetermined low vehicle speed. Is equipped with a switching control means for switching to the parking range, and the transmission is automatically switched to the parking range when the driver has no intention of driving, so the shifting range switching operation can be simplified when the vehicle is stopped. It has the effect of guaranteeing the reliability and safety of time.

[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 6h brake switch 6j seat belt sensor

Claims (1)

[Scope of utility model registration request] 1. A seat belt sensor 6j for detecting seat belt wearing in a vehicle automatic change in which a switch operating portion 2 generates a switching signal to drive an actuator 4 to switch a transmission 4e to a predetermined shift range.
A vehicle speed sensor 6f for detecting the vehicle speed, a brake sensor 6h for detecting the depression of the brake, and a transmission 4e when the seat belt is removed and the brake is not depressed at a predetermined low vehicle speed or less. An electric automatic change characterized by comprising a switching control means 3 for switching to P.