JPS6194841A - Electrically driven mirror apparatus - Google Patents

Abstract

PURPOSE:To reduce the inutile electric-power consumption by stopping a mirror when the frequency signal supplied from a position detector is reversed during the driving on the basis of the operation data memorized into a presetting memory, thus suppressing the repetitive operation of the mirror at the edge of the operation. CONSTITUTION:A position detector 3 outputs the operation data corresponding to the position of a mirror as frequency signal. A presetting memory 1 memorizes the operation data in correspondence with the prescribed preset operation. A mirror driving means 2 drives a mirror on the basis of the operation data memorized into the presetting memory 1. When the frequency signal supplied from the position detector 3 is reversed during the driving of the mirror, a stop means 4 stops the mirror.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention provides, for example, in an electric mirror device for automobiles, when the mirror moves to the operating end during motion control based on preset motion data, the This invention relates to an electric mirror device that can stop the mirror at a certain point.

(Prior art) As a conventional electric mirror device, for example, Japanese Patent Laid-Open No. 59-1
There is No. 02635.

According to the device described in the above-mentioned published patent, it is possible to remotely control the mirror from the driver's seat by operating a predetermined switch.
In addition, by storing the right and left mirror positions suitable for the driver in advance, and selecting the one corresponding to the driver from the stored mirror preset positions when the driver changes positions, the mirror position is automatically positioned at the selected preset position.

However, if the mirror position is memorized at the working end of the mirror, and the movement is controlled based on this movement data,
As shown in Figure 9, it is equipped with a position detector whose oscillation frequency changes depending on the mirror position (angle), so due to the influence of temperature, for example, the normal operating end of 50 KHz may shift to 49 KHz. Sometimes, 50K
Since the oscillation frequency does not change beyond 49KH2 when the mirror stops at Hz, the operation signal continues to be sent so that the frequency becomes 50KHz, and there was a problem that the operation control did not end even though the mirror had exceeded the operating end. .

(Object of the Invention) This invention has been made by focusing on the above-mentioned problems of the conventional technology. The purpose is to provide a mirror device.

(Configuration of the Invention) The configuration of the present invention, as shown in the functional block diagram of FIG. 1, includes a position detector 3 that outputs operation data corresponding to the position of the mirror as a frequency signal.

The operation data from the position detector 3 is stored in a predetermined manner.
a preset memory 1 that stores data corresponding to set/set operations; a mirror drive means 2 that drives the mirror based on the operation data stored in the preset memory 1; and stop means 4 for stopping the mirror when the frequency signal from the position detector 3 is reversed during driving based on the operation data obtained.

(Example) An embodiment of the present invention is shown in FIGS. 2 to 8.

In FIG. 2, reference numeral 11 denotes an outside mirror, and a drive unit serving as a drive means is disposed within a mirror housing 12 of this outside mirror 11.

The drive unit housing 13 is fixed with bolts 14, and the mirror main body 15 is fixed to the drive unit housing 1.
3, so that it can be rotated by a predetermined angle in the vertical and horizontal directions.

A motor unit 16 is fixed inside the drive unit housing 13 as shown in FIGS. 2 and 3, and the output shaft of the motor 16a of this motor unit 16 is connected as shown in FIG. is worm shaft 1
7, and this worm shaft 17 constitutes a speed reduction mechanism together with a small gear 18 and a large gear 12 which are pivotally supported on the drive unit housing 13.

A groove 19a is provided on the inner wall of the large gear 12, and the groove 19a and the mirror drive 1b20 are engaged with each other via a spring pin 21. One universal joint 2Qa of this mirror drive shaft 20 is rotatably fitted to the mirror main body 15, and the other serves as a worm shaft 20b, and the rotation of the motor 16a is caused by the rotation of the worm shaft 17. Small gear 18
．． The mirror drive shaft 2 is connected via a reduction mechanism consisting of a large gear 12.
0, and this mirror moving axis 2o is driven in the front-back direction with respect to the mirror main body 15.

As mentioned above, this mirror drive shaft 2o is engaged with the large gear 12 via the spring pin 21 as shown in FIGS. When the mirror drive shaft 20 is driven in the axial direction, the spring pin 21 comes to the axial end of the worm shaft 20b. Then, when the mirror 15 moves to the operating end,
Since the worm shaft 20b does not move any further, the spring pin 21 normally breaks as shown in FIG. 7 due to the rotational force transmitted from the large gear 12! The movement of expanding from the position of JiI 21 to the position 21' indicated by the two-dot chain line and then returning by one tooth of the worm is repeated. At this time, spring pin 2
1' is held in a groove 19a provided in the inner wall of the large gear 12.

22 in the figure is a position detector, and when the worm shaft 20b of the mirror drive shaft 20 moves, as shown in FIG. 9, the position of the worm shaft 20b of the mirror drive shaft 2o (angle of the mirror body 15) This position detector 22 is of an absolute position type.

The motor unit 16 that has been explained above is
5 in the left and right direction, the mirror body 1
5 in the vertical direction, a motor unit 23 having the same configuration as the motor unit 16 is attached to the drive unit case 13.

Next, in the electric mirror device of the structure L, the earth-planting operation of a microcomputer (not shown) to stop the mirror body 15 when it reaches the first operating end will be explained according to the flowchart shown in FIG.

First, operation control is performed based on operation data stored in a preset memory (not shown). In step 101, it is determined whether automatic operation (operation control) has been completed. If the operation control based on the operation data stored in the preset memory has been completed (in the case of YES), step 102, 1, which is the stop operation program, is completed.
03°104 and executes another program.

Further, if it is determined in step 101 that the operation control (auto operation) has not been completed based on the operation data stored in the preset memory (in the case of No), in the next step 102, the time-up decide whether or not. In this embodiment, this time-up is caused by the control device (not shown) stopping the operation control when there is no change in the frequency of the 1-position detector 22 for about 20 seconds.

In step 102, if there is no frequency change for about 20 seconds and it is determined that the time has expired (YES), the next step 103 is skipped and a mirror auto-stop signal is output in step 104, and the control device (not shown) controls the motor unit 16. motor 16a is stopped.

In addition, if the frequency does not become constant or the frequency has not disappeared for 20 seconds (in the case of No) in step 102, the mirror main body 15 is moved to the operating end in the next step 103. When driven, as shown in FIGS. 6 and 7, the spring pin 21 tries to get over the end of the worm shaft 20b of the mirror drive shaft 20, but the groove 1 of the large gear 12? The spring pin 21 is held down by a, and is returned without being able to get over the end of the worm shaft 20b of the mirror drive shaft 20. At this time.

The position signal of the position detector 22 is inverted. Therefore, if the position signal is reversed during mirror operation control,
, (in case of YES), in the next step 104,
A mirror auto-stop signal is output, and a control device (not shown) stops the motor 16a of the motor unit 16. The stopping means in the functional block diagram in FIG. It is formed.

If the 1-position signal is not inverted (No), the first step 104 is skipped and another program is executed, and then the execution is repeated until the mirror operation control is completed.

In the above description, the case where the mirror main body 15 is driven in the left-right direction has been described, but the same movement occurs when the mirror main body 15 is driven in the vertical direction. Also, both the left and right outside mirrors move in the same way.

(Effects of the Invention) As explained above, according to the present invention, even if the position detector causes a frequency shift due to the influence of temperature, etc., the operation control of the mirror is stopped immediately when the mirror crosses the operating end. Therefore, the mirror does not repeat its operation at the first operating end, thereby providing excellent effects such as not causing discomfort to the driver and reducing wasteful power consumption.

[Brief explanation of drawings]

FIG. 1 is a functional diagram showing a configuration example of this invention, and FIGS. 2 and 3 are cross-sectional and front views showing the structure of an outside mirror of a preset electric mirror device according to an embodiment of this invention. Figure 4 is an explanatory cross-sectional view taken along the A-E line in Figure 3, Figure 5 is an explanatory diagram of Figure 4 shown from direction ■, Figure 6 is the engagement of the large gear and mirror drive shaft in Figure 4. Figure 7 is an enlarged diagram showing the large gear in Figure 5. Figure 8 is a flowchart showing the stop routine by the microcomputer. It is an explanatory diagram showing a relationship. 1...Memory for preset. 3...Mirror drive unit. 4...Position detector. 6...Stopping means. 11...Outside mirror. 13... Drive unit housing, 15... Mira body, 16... Motor unit. 22...Position detector, 23...Motor Uni':/F Patent applicant Nissan Motor Co., Ltd. Patent applicant Patent attorney representing Jidosha Electric Industry Co., Ltd.
Figure 1 Figure 4 Figure 5 Figure 6 Figure 7 - Angle □

Claims (1)

[Claims] (1) A position detector that outputs operation data corresponding to the position of the mirror as a frequency signal, a preset memory that stores the operation data from the position detector in correspondence with a predetermined preset operation, and the preset memory mirror driving means for driving the mirror based on operation data stored in the preset memory; and when the frequency signal from the position detector is inverted while the mirror is being operated based on the operation data stored in the preset memory. and stopping means for stopping the mirror.