JPH0716060U - Auto change - Google Patents

Abstract

(57) [Abstract] [Purpose] Improves reliability against drive motor abnormality in auto-change in which a switching signal is generated from a switch operation unit to drive an actuator and the transmission is switched to a predetermined shift range. . [Construction] A main motor and a sub motor for performing a gear shift operation of the transmission are provided in the actuator, the main motor is normally driven by the control means, the sub motor is driven when the main motor is abnormal, and a motor display signal is generated from the control means. Then, at least one of the main motor operation, the main motor failure, and the sub motor operation is displayed on the display means in accordance with the motor display signal, so that a quick response to the motor failure is possible.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an automatic change for a vehicle which has two drive motors in an actuator and electrically performs a gear shift operation, and more particularly to an automatic change for displaying the drive motor to improve the reliability of the device. .

[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 vehicle automatic 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, in actual development 60-. 168629).

[0004]

[Problems to be solved by the device]

 By the way, in this type of vehicle auto change, if two drive motors are provided in the actuator and the drive motors can be switched and used, the other drive motor will operate even if one drive motor fails. By doing so, the shifting operation can be continued as it is, and the reliability of the device can be guaranteed. If one drive motor is used as the main motor and the other is used as the backup sub-motor, a motor having a smaller capacity than the main motor can be used for the sub-motor, and the cost is not so high.

However, in this case, when one motor is out of order and the other motor is in operation, the shift operation is performed as it is without the driver's knowledge, and the other motor is out of order for some reason. Then, not only the gear shift operation cannot be performed, but the above-mentioned advantages are impaired.

In view of the above point, an object of the present invention is to provide an auto change capable of ensuring the reliability of the device.

[0007]

[Means for Solving the Problems]

 Therefore, in the auto change according to the present invention, a gear shift signal is generated from the switch operation unit to drive the actuator, and the transmission is switched to a predetermined gear shift range. A main motor and sub motor for operation are provided, the main motor is normally driven by the control means, the sub motor is driven when the main motor is abnormal, and the motor display signal is generated from the control means, and the motor display signal is displayed on the display means. Accordingly, at least one of main motor operation, main motor failure, and sub motor operation should be displayed.

Here, the structure of the automatic change may be any structure as long as the gear shift operation is performed by the switch operation. For example, the switch operating unit may be of push button type, dial type or lever type. Further, the switch operating section and the microcomputer may be connected by a signal line, or signals may be exchanged by radio waves or the like.

[0009]

[Action]

 In the present invention, since the main motor is normally driven and the sub motor is driven when the main motor is abnormal, the reliability of the apparatus is high and a small capacity drive motor can be used as the sub motor.

Further, since at least one of the main motor operation, the main motor failure, and the sub motor operation is displayed according to the motor display signal from the control means, the failure of the main motor can be immediately recognized and the main motor It is possible to quickly repair the failure.

[0011]

【Example】

 Hereinafter, the present invention will be described in detail based on specific examples shown in the drawings. 1 to 5 show an automatic change according to an embodiment of the present invention. In the figure, a remote control switch 2 for gear shift operation is provided in the passenger compartment, and a switching signal from the remote control switch 2 is signal-processed by a vehicle-mounted control unit 3, which drives the drive signal and the motor display signal. Is generated.

On the other hand, an actuator 4 is mounted on the vehicle body, and two main or sub drive motors 4a and 4b are installed in the actuator 2, and the motors 4a and 4b are connected to a gear group 4c. An operation lever 4g is fixed to a rotation shaft 4f of the gear group 4, the operation lever 4g is connected to a transmission 4e by a wire 4d, and the rotations of the drive motors 4a and 4b are changed by the gear group 4d. Is transmitted to the rotary shaft 4f, the operation lever 4g is swung, and the wire 4d is pushed and pulled, whereby the transmission 4e is operated to shift gears.

Further, in FIG. 2, 3 is a control unit for controlling the drive of the drive motors 4a, 4b and display of the motors, and 6a, 6b are an indoor light receiving section for receiving the signal of the remote control switch 2 and a light receiving section in the case. , 6d is an inhibitor switch for detecting the shift range of the transmission, 6e is a position sensor for detecting the rotational positions of the drive motors 4a, 4b, 6f is a vehicle speed sensor for detecting the vehicle speed, 6k is the operation of the drive motors 4a, 4b, That is, it is a motor indicator showing at least one of main motor operation, main motor failure, and sub motor operation.

4 and 5 are flowcharts of the control system in the present embodiment, FIG. 5 is a main routine for gear shifting operation, and FIG. 5 is a motor operation display 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 an automatic parking process, that is, a predetermined condition is performed. After the process of changing the speed of the transmission 4e to the parking range P is performed (step S3), the processing content of the switching signal of the switch operating unit 2 is determined (steps S4 to S9), and the motor operation is performed according to the determination result. Display processing is performed, and the transmission 4e is switched to a predetermined range of parking, reverse, neutral, drive, second or low (steps S10 to S15).

At this time, in the processing of the motor operation display routine, as shown in FIG. 5, it is determined whether or not the motor flag is 1 (step S20), and if the flag is 0, that is, if the main motor 4a is normal. The main motor 4a is turned on to turn off the sub motor display of the motor indicator 6k (steps S21 and S22), then the motor is locked, and it is immediately determined whether or not the main motor 4a is in failure (step S25). If not, it is determined whether or not the range of the transmission 4e has become the range selected by the remote switch 2 (step S26), and when the positions match, that is, when the gear is shifted to a predetermined range, the motor 4a is turned off. The process ends as (step S27).

If the main motor 4a is locked for some reason during driving, it is determined whether the motor flag is 1 or not (step S28), and the motor flag is set to 0 immediately after the main motor 4a fails. Therefore, the main motor 4a is turned off, the sub motor 4b is turned on, the motor flag is set to 1 (steps S29, S210, S211), the process proceeds to step S26, the sub motor 4b is rotated until the positions match, and the motor lock, That is, it is determined whether or not the sub motor 4b is in failure (step S25), and unless the sub motor 4b is locked, the sub motor 4b is controlled until the range of the transmission 4e reaches the range selected by the remote switch 2, and the positions match. When the speed is changed to a predetermined range, the motor 4b is turned off. The process ends as F (step S27).

In this way, when the main motor 4a fails, its control is stopped and the sub motor 4b is controlled to continue the shifting operation.

Next, when the shift range switching operation is performed with the remote switch 2, since the motor flag is 1 this time, the sub motor 4b is turned on to display the sub motor on the motor indicator 6k (steps S23 and S24). After that, the sub-motor 4b is controlled in the same manner as described above to perform the shift range switching operation.

On the other hand, when the main motor 4a is repaired and becomes drivable and the sub motor 4b fails, the motor flag is 1 this time, so the sub motor 4b is turned off and the main motor 4a is turned on. Then, the motor flag is set to 0 (steps S212, S213, S214), the process proceeds to step S26, it is determined that the positions match, and the main motor 4a is driven until the positions match.

In the auto change of the present embodiment as described above, the main motor 4a is normally driven and the sub motor 4b is switched to drive when a failure occurs, so that the gear shifting operation can be continued even when the main motor 4a is abnormal. , The reliability of the device can be greatly improved. However, since it is not necessary to drive the sub motor 4b at all times, a small capacity drive motor can be used for the sub motor 4b, and there is almost no increase in cost.

Further, in the auto change of the present embodiment, the sub motor is displayed when the main motor 4a fails, so that the driver can immediately recognize the failure of the main motor 4a and promptly perform repair such as repair of the main motor 4a. It is possible to improve the reliability of the device.

[0024]

[Effect of device]

 As described above, according to the auto change according to the present invention, in the vehicle auto change in which the switching operation signal is generated from the switch operating portion to drive the actuator, the transmission can be switched to a predetermined shift range. A main motor and a sub motor for shifting gears of the transmission are provided, the main motor is normally driven by the control means, the sub motor is driven when the main motor is abnormal, and a motor display signal is generated from the control means, and the display means is displayed. Since at least one of main motor operation, main motor failure, or sub motor operation is displayed in accordance with the motor display signal, it is possible to quickly respond to a motor failure and to significantly improve the reliability of the device. is there.

[Brief description of drawings]

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

FIG. 2 is a functional block diagram showing a control system of the auto change.

FIG. 3 is a cross-sectional configuration diagram showing an actuator of the auto change.

FIG. 4 is a diagram showing a flow chart of a main routine of a control system in the automatic change.

FIG. 5 is a diagram showing a flow chart of a gear change motor operation display routine in the automatic change.

[Explanation of symbols]

2 remote control switch 3 control unit 4a drive motor 4b drive motor 4e transmission 6k indicator

Claims (1)

[Scope of utility model registration request] 1. A vehicle automatic change for generating a switching signal from a switch operating section 2 to drive an actuator 4 to switch a transmission 4e to a predetermined gear shift range. The main motor 4a and the sub-motor 4b for operation, the main motor 4a is usually driven, and the sub-motor 4b is driven when the main motor 4a is abnormal, while the control means 3 for generating a motor display signal and the motor display signal are received. , A main motor operation, a main motor failure, or a display means 6k for displaying at least one of the sub motor operations.