JP2014104868A - Position control device for door mirror surface - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a position control device for a door mirror surface in which an actuator capable of changing a position of a mirror surface, a driver for driving the actuator and a sensor for detecting the position of the mirror surface are arranged in a door mirror and a vehicle body side ECU for outputting a signal to command change of the position of the mirror surface is arranged at the vehicle body, which can reduce costs and reduce the number of wires connected to the door mirror.SOLUTION: In a substrate 14 for controlling a door mirror arranged in a door mirror 5 is provided a memory 15 and also is provided an IC 16 that performs: writing a position of a mirror surface detected by sensors 10 and 11 in the memory 15 and reading out information about the position of the mirror surface from the memory 15; receiving a signal to instruct change of the position of the mirror surface from a vehicle body side ECU13; instructing drivers 8 and 9 to drive on the basis of the position of the mirror surface instructed to change and the information about the position read out from the memory 15; and sending a signal indicating that change of the position of the mirror surface is completed to the vehicle body side ECU 13.

Description

  According to the present invention, an actuator capable of changing the mirror surface position, a driver for driving the actuator, and a sensor for detecting the mirror surface position are disposed in the door mirror, and a signal for instructing the mirror surface position change is provided. The present invention relates to a mirror position control device for a door mirror in which an output vehicle side ECU is disposed on the vehicle body side.

  Such a mirror surface position control device is already known from Patent Document 1 and the like.

JP 2007-50768 A

  In the one disclosed in Patent Document 1, the vehicle body side ECU for controlling a plurality of functions such as mirror surface position control and tilting control of a door mirror, power window opening / closing control, and room lamp lighting control, Each door mirror control ECU receives a signal instructing a mirror surface position change from the vehicle body side ECU, and is connected to each door mirror corresponding to the door mirror individually. The control ECU changes the mirror surface position to the instructed mirror surface position using a sensor and an actuator housed in the door mirror. At this time, the vehicle body side ECU and the door mirror control ECU need to have a microcomputer in order to communicate with each other, and an increase in cost cannot be avoided.

  Moreover, the actuator mirror wiring is required between the door mirror control ECU and the door mirror, and the door mirror tilt control and heater wiring may be necessary, increasing the number of wires connected to the door mirror side. There is a problem that the wiring space of the door mirror shaft through which the wiring passes arises or the wiring weight increases. In order to solve such problems, it can be considered simply to house the door mirror control ECU equipped with the microcomputer in the door mirror. However, the microcomputer is driven on the board on which the microcomputer is mounted, and its reliability is improved. In order to assist, a circuit such as a power supply control circuit and a noise absorption filter circuit is required in addition to the microcomputer, and it is necessary to ground the microcomputer in order to reduce noise generated from the microcomputer itself. Since the area of the board on which is mounted becomes large, there is a space limitation in accommodating the door mirror control ECU equipped with the microcomputer in the door mirror, and it is difficult to accommodate in the door mirror.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a mirror surface position control device for a door mirror that is intended to reduce costs and to reduce the wiring of a wiring connected to the door mirror side. To do.

  To achieve the above object, according to the present invention, an actuator capable of changing the mirror surface position, a driver for driving the actuator, and a sensor for detecting the mirror surface position are disposed in the door mirror. In a mirror surface position control device for a door mirror in which a vehicle body side ECU that outputs a signal for instructing a mirror surface position change is disposed on the vehicle body side, a memory that stores mirror surface position information on a door mirror control board disposed in the door mirror The mirror surface position obtained by the sensor is written to the memory, the mirror surface position information is read from the memory, and the signal from the vehicle body side ECU instructing the mirror surface position change is received and changed. A drive command to the driver based on the instructed mirror surface position and position information read from the memory, and the vehicle body That IC which performs the transmission of the mirror position change completion to the ECU is provided to the first feature.

  In addition to the configuration of the first feature, the present invention has a second feature that there is one transmission / reception signal line between the IC provided on the door mirror control board and the vehicle body side ECU. .

  According to the first feature of the present invention, the IC receives a signal for instructing the mirror surface position obtained by the sensor to be written to the memory, the mirror surface position information from the memory to be read, and the mirror surface position change from the vehicle body side ECU. Because it receives and sends the drive command to the driver based on the mirror position instructed to change and the position information read from the memory, and the completion of the mirror position change completion to the vehicle side ECU, there is no need for a microcomputer for door mirror control Therefore, the cost can be reduced. In addition, since the memory and the IC are provided on the door mirror control board disposed in the door mirror, the vehicle can be reduced in line and weight.

  Further, according to the second feature of the present invention, the number of signal lines for transmission / reception between the IC and the vehicle body side ECU is one, so that the wire saving and weight reduction can be further achieved.

It is a figure which simplifies and shows the structure of the mirror surface position control apparatus of a door mirror. It is a flowchart which shows the mirror surface position control procedure in vehicle body side ECU. It is a flowchart which shows the control procedure by IC in a door mirror.

  The embodiment of the present invention will be described below with reference to FIGS. 1 to 3. First, in FIG. 1, a door mirror 5 includes a first actuator including an electric motor for changing the mirror surface position in the vertical direction. 6, a second actuator 7 including an electric motor for changing the mirror surface position in the horizontal direction, first and second drivers 8 and 9 for driving the first and second actuators 6 and 7, A first sensor 10 for detecting the mirror surface position in the vertical direction and a second sensor 11 for detecting the mirror surface position in the horizontal direction are arranged, and a vehicle body side ECU 13 having a microcomputer 12 is provided on the vehicle body side. Is arranged so as to output a signal instructing the mirror surface position change.

  A door mirror control board 14 is disposed in the door mirror 5. The door mirror control board 14 has a memory 15 for storing mirror surface position information, the mimory 15, and the first and second drivers 8. , 9, a first ADC (analog / digital converter) 17 interposed between the first sensor 10 and the IC 16, and a second ADC 11 interposed between the IC 16 and the second sensor 11. 2 ADCs 18 are provided.

  The IC 16 writes the mirror surface position obtained by the first and second sensors 10 and 11 into the memory 15, reads the mirror surface position information from the memory 15, and instructs the vehicle body side ECU 13 to change the mirror surface position. Receiving the signal from the vehicle, the mirror position instructed to change, the drive command to the first and second drivers 8 and 9 based on the position information read from the memory 15, and the mirror surface to the vehicle body side ECU 13 The position change completion is transmitted.

  In addition, the IC 16 provided on the door mirror control board 14 and the vehicle body side ECU 13 are connected by a single transmission / reception signal line 19.

  In FIG. 2, the microcomputer 12 of the vehicle body side ECU 13 can control the mirror surface position of the door mirror 5 so as to be in a memory holding position that is set in advance and stored in the memory 15, and in the vertical direction. The mirror surface position control in the horizontal direction and the mirror surface position control in the horizontal direction can be individually performed, and a signal instructing the mirror surface position change is output according to the procedure shown in FIG.

  In step S1 of FIG. 2, it is determined whether or not a condition for moving the mirror surface position to the memory holding position is established. In step S3, it is confirmed that the movement completion signal is transmitted from the IC 16, and the mirror surface position control is completed.

  When it is confirmed in step S1 that the condition for moving the mirror surface position to the memory holding position is not established, the process proceeds from step S1 to step S4. In this step S4, an operation of a door mirror operation switch (not shown) or the like is performed. To determine whether or not the horizontal movement condition is satisfied. If the horizontal movement condition is satisfied, the horizontal target movement position is temporarily stored in step S5, and the process proceeds to step S6. In step S4, the horizontal movement condition is satisfied. When it is confirmed that there is not, the process bypasses step S5 and proceeds to step S6.

  In step S6, it is determined whether or not a condition for vertical movement is satisfied by an operation of a door mirror operation switch or the like. If it is satisfied, in step S7, the vertical target movement position is temporarily stored, and the process proceeds to step S2. When it is confirmed in S6 that the condition for vertical movement is not satisfied, the process bypasses step S7 and proceeds to step S2.

  At least one of the state in which the horizontal movement condition is satisfied and the horizontal target movement distance is temporarily stored and the state in which the vertical movement condition is satisfied and the vertical target movement distance is temporarily stored are described in step S2. Thus, a movement instruction signal for instructing movement for the temporarily stored target movement distance is transmitted in step S2.

  On the other hand, the IC 16 provided on the door mirror control board 14 executes mirror surface position control according to the procedure shown in FIG. 3 based on a movement instruction transmitted from the microcomputer 12 of the vehicle body side ECU 13. In S11, it is determined whether the current position in the horizontal and vertical directions of the mirror surface is the same as the memory holding position. If not, the current position detected by the first and second sensors 10, 11 is determined in step S12. In step S13, the process proceeds to step S13. If they are the same, the process bypasses step S12 and proceeds to step S13.

  In step S13, it is determined whether or not an instruction to move to the memory holding position has been received from the microcomputer 12 of the vehicle body side ECU 13, and when received, in step S14, the first and second first steps are necessary for moving to the memory holding position. When the drive command is issued to the first and second drivers 8 and 9 so that the second actuators 6 and 7 are operated, and it is determined that the movement is completed in the next step S15, the movement completion signal is sent in step S16. A transmission is made to the microcomputer 12 of the vehicle body side ECU 13.

  When it is determined in step S13 that the vehicle body side ECU 13 has not received a movement instruction from the microcomputer 12 to the memory holding position, the process proceeds from step S13 to step S17. In this step S17, a movement instruction signal in the horizontal direction is transmitted. Is received from the microcomputer 12 of the vehicle body side ECU 13, and when it is received, in step S18, the second driver 7 is operated so that the second actuator 7 is operated as much as necessary for the indicated movement amount in the horizontal direction. When the drive command is issued to 9 and it is determined that the movement is completed in the next step S19, the process proceeds to step S20. If it is determined in step S17 that the vehicle body side ECU 13 has not received a movement instruction signal in the horizontal direction from the microcomputer 12, the process bypasses steps S18 and S19 and proceeds to step S20.

  In step S20, it is determined whether or not a movement instruction signal in the vertical direction has been received from the microcomputer 12 of the vehicle body side ECU 13. When received, in step S21, the first movement amount necessary for the instruction movement amount in the vertical direction is required. A drive command is issued to the first driver 8 so that the actuator 6 operates, and when it is determined that the movement is completed in the next step S22, the process proceeds to step S16 and a movement completion signal is output. When it is determined in step S20 that the vehicle body side ECU 13 has not received a movement instruction signal in the vertical direction from the microcomputer 12, the mirror surface position control is terminated.

  Next, the operation of this embodiment will be described. Inside the door mirror 5, a first actuator 6 for changing the mirror surface position in the vertical direction, and a second actuator 7 for changing the mirror surface position in the horizontal direction. The first and second drivers 8 and 9 for driving the first and second actuators 6 and 7, the first sensor 10 for detecting the mirror surface position in the vertical direction, and the mirror surface position in the horizontal direction. A second sensor 11 for detection is disposed, and a vehicle body side ECU 13 including a microcomputer 12 is disposed on the vehicle body side so as to output a signal for instructing the mirror surface position change. A memory 15 for storing mirror surface position information is provided on the door mirror control board 14 disposed in the inside, and the mirror surface position memory obtained by the first and second sensors 10 and 11 is also provided. 5, reading of mirror surface position information from the memory 15, reception of a signal from the vehicle body side ECU 13 instructing to change the mirror surface position, and the mirror surface position instructed to change and position information read from the memory 15. In addition, since the IC 16 is provided for performing the drive command to the first and second drivers 8 and 9 and transmitting the completion of the mirror surface position change to the vehicle body side ECU 13, a microcomputer for controlling the door mirror is unnecessary, and the cost can be reduced. Can be planned. In addition, since the memory 15 and the IC 16 are provided on the door mirror control board 14 disposed in the door mirror 5, it is possible to reduce the line and weight of the vehicle.

  Further, by using one transmission / reception signal line 19 between the IC 16 and the vehicle body side ECU 13, it is possible to further reduce the line and reduce the weight.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. Is possible.

5 ... door mirrors 6, 7 ... actuators 8, 9 ... drivers 10, 11 ... sensor 13 ... vehicle body side ECU
14 ... Door mirror control board 15 ... Memory 16 ... IC
19: Signal line for transmission / reception

Claims (2)

  In the door mirror (5), an actuator (6, 7) capable of changing the mirror surface position, a driver (8, 9) for driving the actuator (6, 7), and a sensor for detecting the mirror surface position ( 10 and 11), and a vehicle body side ECU (13) for outputting a signal for instructing the mirror surface position change is provided in the door mirror (5). The door mirror control board (14) is provided with a memory (15) for storing mirror surface position information, and the mirror surface position obtained by the sensor (10, 11) is written to the memory (15). Further, reading of mirror surface position information from the memory (15), reception of a signal from the vehicle body side ECU (13) instructing to change the mirror surface position, and the mirror surface position instructed to be changed An IC (16) for performing a drive command to the driver (8, 9) based on the position information read from the memory (15) and transmitting a mirror surface position change completion to the vehicle body side ECU (13). A mirror surface position control device for a door mirror, which is provided.   2. The door mirror according to claim 1, wherein there is one transmission / reception signal line (19) between the IC (16) and the vehicle body side ECU (13) provided on the door mirror control board (14). Mirror surface position control device.

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