JPS5953251A - Electrically-driven mirror device - Google Patents

Abstract

PURPOSE:To prevent damage of a motor, by generating a motor driving output from a preset return control means for setting a mirror body at a position required by an operator, and thereafter stopping a motor when the output is generated for more than a given time. CONSTITUTION:It is possible to selectively use a manual mode for setting a mirror angle at a desired angle by operation of a manual switch 51, and a preset return mode for setting a mirror angle by channel switches 53-56 on the basis of invididual data preliminarily stored in each memory channel in a microcomputer 36. There is provided an original position return control means for coinciding content of a present position memory with a practical mirror position according to outputs from limit switches 16 and 23 which are operated when each switch 53-56 is operated to rotate a mirror body to a predetermined absolute position. Further, there is provided a protection means for cutting off current to a motor 5 when a drive command of the motor is outputted, and it is generated for more than a given time.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention stores, for example, a plurality of mirror angles suitable for the driver, and based on the stored mirror angles,
This invention relates to electric mirror loading that automatically sets the mirror at an angle suitable for each driver.

In recent years, vehicles have been equipped with devices that automatically adjust the angle of the side mirrors (hereinafter simply referred to as mirrors) according to the position of the driver's eyes when seated. It is possible to remotely control the mirrors from the seat, and the mirror angles suitable for several drivers are memorized in advance, and when the driver changes, etc., the mirror angles suitable for the driver are changed from among the stored mirror angles. An electric mirror device has been proposed in which the mirror is automatically positioned at the selected mirror angle by selecting the one corresponding to the user.

Generally, in such electric mirror devices, in consideration of safety, in addition to adjusting the mirror angle using the automatic setting operation described above, the mirror angle can also be adjusted manually by directly rotating the mirror surface using an external force. In order to be able to adjust the mirror surface, there is a need for an idling mechanism that can rotate and position the mirror surface independently of the rotation of the mirror drive motor when an external force of more than a certain level is applied to the mirror.

By the way, in general, in such electric mirror devices equipped with an idling mechanism in the middle of the drive system, in order to position the mirror surface according to the memorized mirror angle, the absolute angle of the mirror surface must always be adjusted by I [variable resistance]. The detected output is detected by a potentiometer such as an absolute encoder, and while comparing this detection output with the stored angle data, the mirror drive system is controlled to rotate the mirror surface vertically and horizontally. High-grade control is required to position the mirror at a specific angle.

However, in such an electric mirror device,
Because a relatively large angle detector such as a potentiometer is used to perform the automatic positioning control of the mirror described above, it is difficult to accommodate it in the narrow housing of the mirror, and the output signal of the potentiometer is an analog signal. For example, when the vehicle is parked in the scorching sun, resistance-type potentiometers have a number of problems, such as a large temperature error and reduced detection accuracy, and an increase in the number of harnesses, which impedes miniaturization. Ta.

This invention has been made in view of the above-mentioned problems, and the basic object of the invention is to realize the above-mentioned mirror positioning with a simple structure, inexpensively, and compactly without using sophisticated control. Furthermore, when performing automatic positioning to the memorized mirror angle, even if the mirror surface is rotated manually or by other external force via the idling mechanism, the positional shift due to this idling is corrected. An object of the present invention is to provide an electric mirror device which enables accurate positioning.

Furthermore, a more specific object of the present invention is to reduce the drive current to the motor in a cold region, for example, in the event of an emergency situation such as freezing of the motor or other mirror drive mechanism. Even if the motor is supplied, when the motor does not rotate for a predetermined period of time, or when the motor rotates but the mirror is not rotated, the power supply to the motor is stopped. Even though drive current is being supplied to the motor, the motor remains stopped for a long period of time, resulting in premature damage to the motor.
The purpose of the present invention is to prevent this from occurring, and also to prevent unnecessary drive current from being supplied to the motor when the mirror cannot rotate.

5- Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 4 are diagrams showing the structure of an embodiment of an electric mirror device according to the present invention.

The electric mirror device according to this embodiment is an outside mirror M, and inside a mirror body 1 of this outside mirror M, a connit case 2 is fixed via bolts 3 and 6. A main body 4 is fitted so as to be rotatable by a predetermined angle in the left and right directions.

A motor 5 is fixed inside the unit case 2 as shown in FIGS. is rotatably fixed integrally with the shaft, and the other end is fixed to an N magnetic latch 8 having a speed reduction mechanism such as a planetary gear speed reducer.

Then, when the electromagnetic clutch 8 is energized, the motor 5
The rotational output is appropriately decelerated and linked to a pinion gear (for upward and downward movement) 9, and when A is turned, it is linked to a pinion gear (for left and right rotation) 10.

As particularly shown in FIG. 3, the above-mentioned pinion gear 9 meshes with a fan-shaped joint gear 11. One end of this joint gear 11 is connected to a bracket 12 attached to the back surface of the mirror body 4. J: The mirror 4 is configured to rotate in the vertical direction with the bin 13 as the center of rotation. Furthermore, projections 14 are provided at the upper and lower ends of the joint gear 11.
15 is provided in a protruding manner, and this protrusion 14.15 causes the unit 1-1 to rotate when the joint gear 11 rotates to the upper F terminal position.
It acts to press and turn on the limit switch 16 disposed in the case 2.

Furthermore, there is some elastic meshing play between gears 9 and 11, so if you try to forcibly rotate the mirror body up and down with the motor fixed, both gears 9,
The mesh between 11 and 11 will be disengaged and the engine will spin idly.

In addition, as particularly shown in FIG. 4, the binion gear 10 meshes with a slide gear 18 that is movable in the front and rear direction.
One end of this slide gear 18 is connected to a ball joint 19.
The mirror body 4 is connected to the bracket 1 of the mirror main body 4 via the bracket 12, and by the movement of this slide gear 18 in the front-back direction, the mirror main body 4 is moved in the left-right direction with the bin 20 as the center of rotation, as shown in FIG. and rotate. Further, protrusions 21.22 are protruded from the front and rear ends of the slide gear 1B, and the protrusions 21.22 are configured to press and turn on the limit switch 23 at the end of the slide gear 18's longitudinal movement. ing.

Furthermore, there is some elastic meshing play between gears 10 and 18, so if you try to forcibly rotate the mirror body from side to side with the motor fixed, both gears 10. 18 will be disengaged and will spin idly.

In addition, the tube number 24 in Figure 2 is the above! &('1 This is a reed switch that is turned on and off by the magnetic force of the body 7 and inputs the pulse offset to the microcomputer 36, and from this reed switch 24, 1 pulse is output every half rotation of the motor shaft.
J: Composed of sea urchins.

Next, FIG. 5 is an electrical circuit diagram showing the hardware configuration of the electric mirror device according to the present invention.

In the figure, the output power line of the battery 30 mounted on the vehicle is branched into two systems, and then the first line 11 is connected to the power source of the microcomputer 36 via a fuse 31 and a first power circuit 32. This first power line 11 is supplied to the terminal VCC, and at the same time, the left and right mirror motors 5R.

5L OJ: and left and right mirror clutch magnets 8R.

It is supplied to 8L.

Further, the second power supply line e2 is connected to the ignition switch 33. After passing through the fuse 34 and the second power supply circuit 35, the second power supply line β2 is supplied to the HL king terminal of the microcomputer 36, and at the same time, the second power supply line β2 is connected to a pair of left and right power lines for switching the rotation direction of the motors 5R and 5L. Switching relay 37R, 371゜OJ: and 38R, 38
In addition to being supplied to L, a relay 39 for preventing erroneous output, which will be described later,
It is also supplied as a power source for Bouyannel display LEDs 40 to 43.

9- The microcomputer 36 is constantly supplied with power via the first power supply circuit 32 for predetermined memory backup, etc., and the output of the second N source circuit 35 is J: Then connect '1-B to the HLT T terminal.

is supplied, a predetermined system program to be described later is executed.

When the stop switch 44 is operated, each output transistor 45R, 4, 5L, 4.6R, 461
, , is disconnected between the emitters and GND, rendering each of the output transistors inoperable, and at the same time, the boat P30
The operation is detected by the microcomputer 36, and a stop signal is also sent to the program in the microcomputer 36. .

Next, each baud h PO to P of the microcomputer 36
The functions of 30 will be briefly explained.

Boat PO: As mentioned above, the boat Po is connected to the second power supply line 12, so if the ignition switch 33 is turned off or the fuse 33 is disconnected, the output of the second power supply circuit 35 It is possible to detect this as early as possible before it deteriorates.

Boat []1: Connected to the vertical limit switch 16R for the right side mirror, and therefore, based on L'' being supplied to the boat P1, when the mirror main body 4 rotates in the vertical direction, either the vertical limit switch 16R It is possible to detect that the terminal has been reached.

Boat 1〕2: Left and right limit switch 2 for right side mirror
3R, and therefore, based on the fact that "L u" is supplied to the boat P2, it is possible to detect that the mirror main body 4 has reached either the left or right end of the rotation in the left and right direction. can.

Boat 3: Connected to the reed switch 24R for detecting the motor rotation speed for the right side mirror, therefore boat P3
By counting the pulse train supplied to the mirror body 4, it is possible to detect how many times the mirror main body 4 has rotated in the vertical direction or the horizontal direction 71, that is, the relative rotation movement.

Port hPq, P7: Output 1 - transistor 45R, respectively
, 46R, and is connected to the base of P-l b+
11, p, == it 1. - In state II, the coil 47R of the switching relay 37R is energized, and its contact '1.8 R is connected to the first power line I! ,1
The switch to the side is set, and the first power line J2 is set to J:
Current flows in the order of contact 1→contact 48R→motor 5R→contact 50R→earth, and motor 5R rotates in the normal direction.

On the other hand, boat P4−″l L 11. Boat P
== jl In the HII state, the coil 49R of the switching relay 38R is energized, its contact 50R is switched to the first power line ℃1 side, and the motor 5R is connected to the first power line 11→contact. 50R → Motor 5R → Contact 4
Current flows from 8R to ground, causing the motor 5R to rotate in reverse.

Boat P 5 + Boat P6: Each connected to the power supply line of motor 5R, Boat 1] 5-11 lI
II. Based on boat P 6 = "l-", it is detected that the motor 5R is rotating in the forward direction, and the motor 5R is rotated forward to port 1]
Based on the fact that 5='L°' and boat stroke 6-''1 bit', it can be detected that the motor 5R is rotating in reverse.

Furthermore, based on the fact that the boat P5=P6-"L", it is possible to detect that the motor 5R is at rest.

Boat P8: Clutch magnet 1-8R for right side mirror
By outputting L'' to the boat P8, the clutch magnet 8R is operated, and the deceleration output shaft of the motor 5R can be connected to the pinion gear 9 for vertical rotation.

Boat P: The left side mirror has the same function as boat P1.

Boat 1 to Pro: The left side mirror has the same function as boat P2.

Boat P11: The left side mirror has the same function as boat P3.

Poe 1~P+2. P+5: Regarding the left side mirror, boat P4. It has the same functions as P7.

Ball l-P+s, P+4: Regarding the left mirror, ball h
P5. It has the same functions as P6.

Baud 1-P+7: Connected to the vertical movement output S+ of the manual switch 51, and therefore, based on the fact that 13-]-'' is supplied to P+7, the manual switch 51 is set to the -direction rotation position or the downward rotation position. It is possible to detect that the camera is set in a moving position.

Port P+e: Motor forward rotation output S s , S of the manual switch 51 via the wired OR circuit 52
5 OJ: tFMo'l are connected to the reverse outputs 82 and 84 (1), respectively, and therefore "L" is connected to the boat P18.
” is supplied, manual switch 5
It is possible to detect that 1 is set in any of the upper, lower, left, and right positions.

Boat PI9~P22; Channel display LED40~
43 and therefore these boats have
By outputting ``, the LE040 to LE43 can be driven to light up as appropriate.

Boat P23-P26: Channel switch 5 for each
Therefore, depending on which of these ports is supplied with L t+, it is possible to detect which met channel is specified.

The boat P27 is connected to the memory switch 57 (15), so that it can be detected that the memory mode has been set by supplying "I l II" to the boat P27.

Port P28: is connected to the buzzer 58, and therefore, the buzzer 58 can be driven by outputting a value to the port P2[+.

Boat P2s: Connected to the base of the transistor 59. Therefore, by applying a voltage to the boat P29, the transistor 59 is turned on and the coil 60 of the relay 39 is energized, and the contact 61 of A is turned on. Turn on the left and right output transistors 451.46L, 45
The ground lines of R and 46R are made conductive, and each output transistor is activated. You can read it.

Baud 1 to P30: As mentioned above, the pull-down resistor 62 is connected to the connection point with the stop switch 44, so the state of boat P30 varies from 411-II to 11.
Based on the fact that the stop switch 44 has been operated, it can be detected that the stop switch 44 has been operated.

As explained above, each of the boats PO to P30 of the micro combi coater 36 displays a state signal indicating each state of the external circuit or a control output signal for the external circuit as appropriate.

Although not shown, this micro combi coater 36 has an internal motor timer, and one of the channels of this motor timer is selected by the boats P23 to P26, thereby supplying drive current to the motor 5. Then, a time count is started, and the supply of drive current to the motor 5 where the same motor drive output has continued for a certain period of time or more is cut off. That is, this motor timer is activated every time the motor 5 is driven. P8～Pro
It is configured to monitor the presence or absence of input signal q. As a result, even if an abnormal situation occurs, for example in a cold region, the motor or its mirror drive mechanism freezes and prevents the motor from rotating, or the motor rotates but the mirror does not rotate. This prevents the mirror from being burnt out, and also prevents unnecessary supply of drive current to the mirror 5 when the mirror cannot rotate.

Next, the left and right motors 5R, 5L and clutch magnets 8R, 8L are configured to be controlled by the output from the micro combi coater 36, and can also be controlled in parallel by each output 81 to S5 of the manual switch 51. .

That is, as shown in FIG. 6, the manual switch 51 includes, for example, a four-way toggle switch 63 that independently outputs vertical and horizontal outputs and has a neutral position, and a two-way toggle switch 63 that outputs outputs in two vertical and horizontal directions. toggle switch 62
It is composed of.

When the four-way toggle switch 63 is set to the upper or lower side, the output S1 of the manual switch 51 becomes 'L°', thereby causing the diode 64.
65, the clutch magnets 8R, 81- are energized, and the deceleration output shafts of the motors 5R, 51- are connected to the pinion gear for vertical rotation.

On the other hand, when the 2-way toggle switch 62 is set to the right side and the 4-way toggle switch 63 is operated to the right or down position, either the output S2 or S3 is set to the "'L" position. Therefore, at Jζ, either the switching relay 47R or 49R is driven, which causes the right mirror motor 5R to rotate forward or reverse.

On the other hand, when the two-way toggle switch 62 is set to the left, if the four-way i to toggle switch 63 is operated up, down, left, or right, either the output s4 or S5 of the manual switch 51 is L'', which drives either the switching relay 47L or 49L, causing the left mirror motor 5L to rotate forward or reverse.

Therefore, when manual switch operation is detected at baud 1 to P+7, output port P4 of the microcomputer 36. P7. PI2. All states of P15 111 II
Then, the outputs S1 to S5 of the manual switch 51 are J
:The left and right mirrors can be manually controlled to rotate in the desired direction, so there are 18.

Next, Figure 7 and J: and Figure 8 (a) (b)
(c) is a flowchart schematically showing the configuration of the system program executed in the microcomputer 36, and the operation of the embodiment device will be systematically explained below according to this feature [1-Character 1~].

The electric mirror device according to this embodiment has two modes: a manual mode in which the mirror is set at a desired angle by operating the manual switch 51 from the driver's seat while checking the mirror angle at 11; Selectively use two operation modes: a preset return mode and a preset return mode in which the mirror angle is set to a desired angle by one-touch operation of channel switches 53 to 56 based on individual data stored in each memory channel 17. can do. In the preref 1 to return modes, the motor timer constantly monitors the activation state of the motor 5 and the state of the mirror rotating portion TIjj+.

The operation of the soldering iron in manual mode will be explained in detail.

In the following operation description, for convenience of explanation, only the right mirror will be representatively described, but it goes without saying that the same explanation can be applied to the left mirror as well.

In manual mode operation, although not shown in the flowchart in rl, the micro combi coater 36 always outputs from the reed switch 24R via the boat P3).
The pulse train 13 is sent to Karan 1, and it is detected whether the motor 5R is in forward or reverse rotation depending on the logic state of boats P5 and P6.
Further, the state of the output S1 of the manual switch 51 is taken in via the boat PI7, and based on this, it is detected whether the mirror main body 4 is rotating in the vertical direction or the horizontal direction.

Further, when the state of boat PI7 is J: and it is determined that the mirror is rotating in the left and right direction, and the direction of rotation is determined to be rightward or leftward depending on the state of boats P5 and P6. This increments the contents of the counter X indicating the current horizontal position of the mirror by +1 or -1, thereby ensuring that the contents of the counter X always correspond to the current horizontal position of the mirror.

On the other hand, if it is determined that the mirror is rotating in the vertical direction based on the contents of boat PI7, similarly, boat P5. Depending on the contents of P6, the contents of the counter Y indicating the current position of the mirror in the downward direction will be incremented by +1 or -1, so that the contents of the -1 minus counter Y will always be the current position of the mirror in the upward and downward directions. It will correspond to the position.

Since the microcomputer 36 is performing the above operations, the manual switch 5 is not activated in this state.
1 and rotate the mirror body vertically or horizontally to position it at a desired angle, the contents of the counters X and Y will correspond to the current position of the mirror at that time.

Next, the operation 70-chi p-l~ of FIG. β1 will be explained with reference to.

As shown in Figure 6, there are four
channel switches 53 to 56 and one memory switch 57 are arranged.

When the current position of the mirror is to be stored in the memory of a predetermined channel, the memory switch 57 is first pressed. Then, in the flowchart of FIG. 7, the execution result of step (1) becomes YES, and then steps (2) → (3) → (4) → (2) are repeatedly executed, and the memory switch 57 is operated. After that, it becomes possible to detect the ON operation of the channel switches 53 to 56 only for a certain period of time.

In this state, if any of the channel switches 53 to 56 is turned on, the execution result of step (2) is YE.
Steps (5) → (8) - → (
9) Or step 22- up (5) → (6) → (10) → (11) or step (5) → (6) → (7) → (12) → (13) or step (5) )→(6)→(7)→(14)→(
15) is alternatively executed.

As a result, for example, if the operated channel switch is the Δ channel, the left and right position register AX of the A channel and the vertical position register Δy of the Δ channel contain the counters X and Y formed by the manual operation, respectively. The contents will be transferred and stored.

Next, the operation of preset return -[-C12 will be explained. Assume now that channels A, B, C, and D have already stored mirror position data unique to each driver. The contents of these mirror position data are based on the horizontal and vertical rotations of the mirror.
The intersection of the rightward rotation end and the downward rotation end is the origin (0,
0), it is stored as the amount of relative displacement from the origin.

In this state, when the ignition switch 33 is turned on, the flowcharts shown in FIGS. 8(a), 8(b), and 8(c) start.

When the program starts, step (20) is first executed to determine whether the memory state has been backed up normally, and step (21) is selectively executed depending on the determination result. , and finally each register, memory, etc. in the working area is returned to a predetermined initial state.

Next, when step (22) is executed, it is determined whether or not a channel switch has been operated, and if any of the channel switches 53 to 56 has been pressed, step (22) is executed. The result is YES,
Subsequently, origin return processing is performed.

Here, the return-to-origin process is a process in which the contents of the counter X indicating the current position in the left and right direction and the current (fr) position in the downward direction match the contents of the counter Y with the actual current position of the mirror. This origin return processing is performed for the following purposes.

That is, as mentioned above, in the middle of the rotation transmission system from the motor 5 to the mirror main body 4, an idle mechanism consisting of a binion gear 10 and a slide gear 18 is provided for simultaneous movement in the left and right direction, and an idle mechanism is provided for simultaneous movement in the horizontal direction. Regarding rotation, an idle mechanism consisting of a binion gear 9 and joins 1 to 11 is similarly provided.

However, the original purpose of these idling mechanisms was to prevent the motor 5 from failing and locking the motor shaft, which caused the mirror body 4 to be fixed at an angle inappropriate for the driver. In such a case, even if the -9 axis is fixed, the main body 4 of the mirror can be rotated by hand using an external force using the idle rotation mechanism to set it to the optimum angle.

Therefore, even if the electric mirror device malfunctions, the dangerous situation where the mirror body 4 is fixed at an inappropriate angle and you are forced to continue driving without being able to see what is behind you can be avoided. The goal is to prevent this from happening.

However, if only the Mira main body 4 is configured to be able to rotate by external force regardless of the rotation of the J: Uni motor shaft, the Mira main body may rotate due to some object accidentally coming into contact with it while the vehicle is parked. Or, if a child plays a trick and turns the mirror body 4 (C), the current position data stored in the counters X and Y mentioned above will no longer match the actual position of the mirror. , each channel A mentioned above.

It becomes impossible to restore the mirror to the desired angle using the stored data B, C, and D.

Therefore, the function of the return-to-origin process is to match the contents of the counters X and Y with the current position of the mirror body so that the mirror body can be set at a desired angle using the data of each channel.

Next, to summarize and enjoy the content of the origin return process, the Mira body was rotated appropriately downward and left and right using a motor by remote control, and was positioned at the predetermined origin position. After that, the contents of the counters X and Y are each reset to O.

However, various practical demands are placed on this origin 1u return process. First of all, the origin return process must be performed in as short a time as possible. That is,
The motor 5 is driven to position the mirror main body 4 at a predetermined origin position, and then the counters X and Y are reset to O. For example, turn on the ignition switch of the vehicle and start the vehicle immediately. In this case, it is necessary to immediately check the rear direction, and if the mirror is rotated for the return-to-origin process during that time, it will be completely useless as a side mirror.

Second, the driver does not need to perform any special operations for the return-to-origin process. In other words, even if a child plays a trick and bends the angle of the mirror body while the vehicle is parked, the driver will usually not be able to do so, unless the mirror body is extremely bent. Since it was the iris who did not notice this, the rotation of the Mira body 4 to return to the origin was left to the driver's discretion.The angle of the Mira body 4 was set in advance in the preset mode. There is a risk that failure to match the desired angle may be mistaken for a failure of the device. Therefore, this return-to-origin process needs to be performed automatically without requiring any special operation.

Thirdly, the idling mechanism should not be operated for a long time during the origin return process. In other words, when the idling mechanism is operated, a harsh noise is generated.
Such a situation is not only unpleasant for the driver, but also causes wear and tear on the idle mechanism.

In the electric mirror device according to this embodiment,
The above requirements have been successfully solved based on the following facts discovered by the applicants through experience.

In other words, in the case of a vehicle with the driver's seat on the right side, the 9th
As shown in the figure, the left and right side mirrors are normally used in a state where they are rotated backwards and to the right, and as shown in Fig. 10, when they are rotated in the vertical direction, they are used in a state where they are bent slightly downward. It is normal to

As shown in Figure 11, the angle variable range of the mirror body, that is, the entire usage area is horizontal. It can be represented by a rectangular area J, and a normally used area within this total use area J, that is, a common area can be represented by (''.

This J: sea urchin common use area 1'' is expressed by the horizontally long rectangular area I shown in the lower right part of the horizontally long rectangular area forming the entire use area J.

Therefore, in this example, based on this experience, 1[
Based on the knowledge obtained in 1.1, the origin was first located at the lower right corner of the total usage amount [J, that is, the corner closest to the commonly used area, as shown in FIG. In other words, if the origin is set at the lower right corner of the entire used area J, then i■
The rotation distance when returning a mirror set at a desired angle to its origin is probabilistically the maximum 'fr1vr! Armor will do.

In other words, the probability that the mirror body will be bent due to a child playing a trick or a foreign object colliding with it is extremely rare, so generally speaking, the mirror body 29- is usually located in the normal use area I. is predicted, and therefore, if the origin is located at the lower right corner of the entire use area J in this way, it is possible to move the mirror main body to the origin with probability at the shortest distance #1.

Next, as mentioned above, in this embodiment device, one limit switch is provided in the vertical direction and one in the left and right directions, so it is not possible to determine whether the right side It is not possible to determine whether the limit is the limit or the left limit, and similarly it is not possible to determine whether the limit in the vertical direction is the upper limit, the lower limit 1~, or between them. That is, in order to move the angle of the mirror to the origin (0, 0) by the origin return process, the current vertical and horizontal positions of the mirror must first be detected.

The first thing to think about this is to monitor the output of the left/right limit switch while rotating the mirror to the right or left, and when it turns on, the mirror reaches the right or left end. At the same time, while moving the mirror upward or downward, monitor the output of the vertical distance 1 to switch, and detect that it has reached the upper end or the lower end by turning on the switch. good.

Here, in this embodiment, the following (f) device is further implemented.

7J"tr 'P) I), J: Sea urchin, as mentioned above, the common use area 1sl 11 is located in the lower right part of the entire use area J, so first turn off the limit switches in the up/down direction 11 and in the direction. However, if the end point has not been reached, first turn the mirror to the right or downward while monitoring the output of each limit switch.
: I'm trying to do it. In this way, compared to the case of rotating to the left and upwards, the time required to reach the terminal end is shortened, in other words, the time required to return to the origin can be shortened. It will become.

Furthermore, if the vertical limit switches and horizontal limit switches are turned on, first rotate the mirror to the left, and then rotate the mirror at each end in the left and right directions. After the maximum time required to remove the limit switch on area M1 or M2 has elapsed, it is monitored whether the output of the limit switch is turned off.

In this way, when the limit switch in the left and right direction is normally on, the probability is that it reaches the limit on area M1 on the right side based on the relationship with the above-mentioned common area (-1). If the mirror is located at the right angle 1~, without operating the turning mechanism (in other words, if it were to be rotated to the right), the mirror would collide with the end of rightward rotation and stop spinning. This makes it possible to check the current position of the mirror body in the left and right direction (without forcing the mechanism to operate).Therefore, since the idling mechanism is not operated at all, it does not cause rattling noises. This prevents wear and tear on the idling mechanism due to this.
It is possible.

On the other hand, if there is no mirror in the regular use area 1-1, in other words, if a child has played a trick and bent the main body of the mirror, using this method, there is no choice but to operate the idle rotation 13I. However, this is not a problem because the probability of such a situation is extremely small.

Next, the above-mentioned operations will be explained in order according to section 70.

First, the origin return process in the left and right direction will be explained.

When any of the channel switches 53 to 56 is operated, the flowchart shown in FIG. 8 (a) to (C,) returns to step a3, and the execution result of step (22) becomes YES, and step (23) is then executed. be done.

When step (23) is executed, the output of the limit switch 23R in the left and right direction is taken in, and it is determined whether or not the content is on. Here, the fact that the left-right limit switch 23R is on means that the mirror position in the left-right direction is on the right or left side in the XY coordinates of FIG.
33- means any of the following.

Therefore, the mirror position in the left and right direction is within the limit area M1. If it is in either M2, the execution result of step (23) is YES, then step (24) is executed, and if the motor 5 is started normally, step (23) is executed.
26) is executed and the mirror main body 4 begins to rotate to the left. This is detected in step (27).

If the judgment result in step (27) is No, steps (28) → (29) → (30) → (26) → <28) are repeatedly executed for the set time of the timer, and the Mira body 4
is rotated to the left, and it is repeatedly determined whether the output of the left-right limit switch 23R is turned off.

Here, the setting time of the timer is determined by considering the width ΔX of the limit-on area in the right or left direction in the XY coordinates of FIG. 11, that is, this width Δ
The time required to extract X is set slightly longer than the time required to extract it.

Therefore, if the rotational position of the mirror body 4 in the left-right direction is at the right end (34-, for example, in the right limit-on area M+), the step The execution result of (28) is YES, and then steps (31) and (32) are executed sequentially, and the value of the counter The movement stops, and the left-right direction return-to-origin process ends.

On the other hand, the rotating position of the mirror body in the left-right direction is at the terminal end in the left direction (i.e., the left shoe 1-on area M2
), the execution result of step (28) will be No even if the timer setting time has elapsed, and as a result, the execution result of step (30) will be YES as the timer time expires, and then step (25) will be executed. ) and
If motor 5 is always activated, step (34
) is overturned and Mira's main body 4 begins to rotate to the right.

This is detected in step (35). Then, if the judgment result in step <35) is No, step (3
6)→(34)→(35)→(36) are repeatedly executed, and it is determined whether or not the left and right limit switch 23 is turned on.

As a result, the mirror main body 4 moves from the left end to the right at a constant speed and reaches the right end at the same time as the predetermined time elapses, and at the same time, the execution result of step (36) becomes YES. Then, as mentioned above, step <31),
(32) are executed sequentially, and the return to the origin in the left and right direction is completed.

Then, if the judgment result in step (35) is YFS,
Step (33) is executed and power supply to the motor 5 is stopped.

If it is determined that the left-right limit switch 23R is off by executing step (23), this means that the mirror body 4 is in the middle part in the left-right direction. Subsequently, steps (25>(34) are executed in sequence, and if the motor 5 is started normally, the mirror main body 4 starts rotating to the right from the (+'y rt't). Detected in step (35), the judgment result of this step (35) is No, and at the same time as the appropriate time elapses, the execution result of step (36) is YES.
Then, steps (31) and (32) are executed, and the return to the origin in the left and right direction is similarly completed.

Then, if the judgment result in step (35) is YES,
Step (37) is executed and power supply to the motor 5 is stopped.

Next, the process of returning to the origin in the vertical direction is exactly the same as the process of returning to the origin in the left and right direction. In this case, the execution result of step (3B) is YE.
S, execute steps (39) (/II) sequentially,
If the motor 5 is normally started, the mirror main body 4 begins to rotate upward, and this is detected in step (42).

If the judgment result in step (42) is No, steps (43) → (44) → (45) → (41) -> (42)
is repeated for an appropriate time. Meanwhile, step (43)
The execution result is YES, and then steps (46),
(47) is executed and the content of the vertical counter Y is 0.
37- The rotation in the vertical direction is stopped and the return to the origin in the vertical direction is completed.

Then, if the determination result in step (42) is YES, step (48) is executed and power supply to the motor 5 is stopped L1:.

On the other hand, if the downward rotation device of the mirror main body 4 is located in the upper limit-on area N2, step (3)
After the execution result of step 8) becomes YES, if the motor 5 is started normally, steps (39) → (41) → (4) are executed.
2)→(43)→(44)→(45)→(41) are repeatedly executed for an appropriate time, and as the set time elapses, the execution result of step (45) becomes YES. Of course, if the execution result of step (42) becomes YES during this time, the same processing as described above is performed.

If the execution result of step (45) is YES, step (40) is executed, and if the motor 5 is started normally, step (49) is executed. , which is detected in step (50).

38- If the execution result of step (50) is No, steps (51) → (49) → (50) - → (51) are repeatedly executed, and the mirror body 4 moves from the upper end to the lower end. When it reaches the lower end, the execution result of step (51) becomes YES, and then steps (46), (44) are executed, and the return to the origin in the vertical direction is completed. .

Then, if the execution result of step (50) is YIES, step (52) is executed and power supply to the motor 5 is stopped (1-).

On the other hand, if the vertical rotational position of the mirror main body 4 is located in the middle part in the vertical direction, after the fruit (-T result of step (38) is NO), step (40) is executed, and step (40) is executed. If the execution result of (50) is No, steps (49) and (50).

(51) is repeatedly executed, the mirror main body 4 is rotated downward, and as time passes, the execution result of step (51) becomes YES, followed by steps (46) and (4).
7) is executed, and the return to the origin in the vertical direction is completed.

Then, if the execution result of step (50) is YES, step (52) is executed and power supply to the motor 5 is stopped.

Next, when the horizontal and vertical origin return processes described above are completed, the values of the horizontal current position counter Begins.

When the preset restoration process is started, steps (53)→(54) are performed depending on whether the operated channel switch is A, B, C, or D in the flowchart of FIG. 8(C). →(55) or step (5
3) → (56) → (57) → (58) or step (53) - → (56) → (59) → (60) → (61)
Or step (53) → (56) → (5) → (6
2)→(63) is alternatively executed.

The preset data stored in the X register J and Y register of the corresponding channel is transferred to the preset register 7x in the left and right direction and the preset register 7y in the up and down direction, respectively.

Then, following execution of step (64), step (
65) is executed, the calculation Zx −X is performed between the horizontal preseller 1-register 7× and the horizontal current position register X, and the calculation result is stored in the horizontal deviation register ε× is stored in

Next, when step (66) is executed, it is determined whether the contents of the deviation register εX are positive. Here, the value of deviation register ε× is positive, which means that
In the XY coordinates of FIG. 11, the rotational position in the left-right direction indicated by the preset data means that the rotational position J of the mirror main body 4 at the present moment is on the left side. Therefore, the contents of the deviation register ε× immediately after the start of the preset return process will be positive, and if step (67) is subsequently executed and the motor 5 is started normally, the mirror body 4 will rotate to the left. Start moving. This is the next step (
68).

41- If the judgment result in step (68) is NO, the counter increment process consisting of steps (69) to (71) is performed, and the contents of the current position register x in the left and right direction are read from the reed switch 2-1R. It is stepped in response to the output pulse train, and thereafter the step (
65)'(66)→(67)→(68)→(69)→(
70)→(71)→(65) are repeatedly executed.

Next, when the left and right rotational position specified by the Priscella l-data matches the current rotational position, step (6) is performed.
The execution result of 5) is No, and then step (73)
is executed, the mirror rotation operation in the left and right direction is stopped, and the preset return process in the left direction is completed, and then the preset process in the up and down direction is started.

When the vertical preset process starts, step (
Following execution of step (74), step (75) is executed,
The operation 7y-42-Y is performed between the vertical preset register Zy and the current position register Y in the -F downward direction, and the result of the operation is stored in the 1-difference register εy in the downward direction. .

Next, when step (76) is executed, it is determined whether the contents of the vertical deviation register εy are positive.

Here, if the contents of the vertical preset register εy are positive, this means that the vertical mirror rotation position indicated by the vertical preset data is the actual rotation of the mirror at that point. Position j: means that it is located above the rim. Therefore, immediately after starting the preset return process in the vertical direction, the execution result of step (76) is YE.
If the motor 5 is activated normally after the S roar is executed and the motor 5 is activated normally, the mirror main body 4 starts to rotate upward, which is detected in step (78).

If the judgment result of SKETB <78) is No, 1, the counter increment process consisting of steps (79) to (82) is executed, and the value of the current position register Y in the vertical direction is changed to the reed switch 24. It is counted up in response to the pulse train output from R.

From then on, steps (75) → (76) → (77) → until the downward rotational position shown in the data from Precera 1 matches the actual rotational position of the Mira body. (78
)→(79)→(80)−→(81)→(82)→(7
5) is executed repeatedly.

Next, when the vertical rotation position indicated by the preset data matches the current rotation position of the mirror, the execution result of step (76) is No, and then step (76) is executed.
84) is executed, the vertical rotation of the Mira body is stopped, and as a result, the rotation of the Mira body in the horizontal and vertical directions is performed.
~Return processing is completely completed.

On the other hand, if the determination results in steps (6B) and (78) are YES, steps (72) and (83) are executed, and power supply to the motor 5 is stopped.

In addition, in the above embodiment, a limit switch was used as a small rotation detector, but it may be detected by, for example, a Hall element that detects the magnetic flux of a magnetic material, and the detection is not limited to the above-mentioned limit switch. Of course not.

As is clear from the description of the embodiments below, the electric mirror device according to the present invention automatically sets the mirror at an angle suitable for each individual based on individual data stored in the memory in advance. In addition, even if the motor shaft is locked, the mirror can be set to the desired angle using an external force by using the idling mechanism.Furthermore, if a child plays a trick while parking and the mirror is Even in the case where the angle of Furthermore, since analog signals are not interposed in the servo system, the control accuracy is good, and the structure is simple and can be manufactured at low cost.

Further, according to the present invention, in addition to the above-mentioned basic effects, the starting state of the motor and the rotating driving state of the mirror are constantly monitored, and if the motor does not start even after a predetermined period of time has elapsed, or if the motor is not started, the motor is activated. 45- When the mirror does not rotate, the power supply to the motor is stopped, so even if the motor or its mirror drive mechanism freezes and the motor rotation is inhibited, for example in a cold region, In addition, even if the mirror cannot be rotated, this can be reliably detected, preventing burnout of the motor, and also preventing unnecessary drive current from being supplied to the motor if the mirror cannot be rotated. can.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the internal structure of the electric mirror, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 is the same as Fig.
Figure 4 is a cross-sectional view taken along the line m-111.
-IV line sectional view, Figure 5 is an electrical circuit diagram showing the hardware configuration of the device of the first embodiment, Figure 6 is a front view of the operation panel, and Figure 7 is the storage of individual data in each channel. The stirring process is shown in the diagram [1-Diagram, Figure 8 (a) to (C)]
9 shows the horizontal rotation state of the mirror in normal conditions, and FIG. 10 shows the vertical rotation of the mirror 46- in normal conditions. Figure 11 shows the relationship between the mirror's left and right rotation on the X axis and vertical rotation on the Y axis. This is a diagram. 4...Mira main body 5...
・・・・・・・・・・・・Motor 7・・・・・・・・・
・・・・・・Magnetic material 8・・・・・・・・・・・・・・・
Electromagnetic clutch 9...Binion gear 10...Binion gear 11
......Fan-shaped joint gear 14, .
15...Protrusion 1G...Limit switch 18.
......Slide gear 21.22...
Protrusion 24...Reed switch patent applicant Nissan Motor Co., Ltd. Jidosha Electric Industry Co., Ltd. 47-1! f Unexamined Japanese Patent Publication No. 59-53251 (14) Unexamined Japanese Patent Publication No. 59-5
3251 (18) 1760 Higashimatano-cho, Totsuka-ku, Yokohama City, Japan Jidosha Electric Industry Co., Ltd. (0) Inventor: Masao Ida, Jidosha Electric Industry Co., Ltd. (0) Applicant: Jidosha Electric Industry Co., Ltd., 1760 Higashimatano-cho, Totsuka-ku, Yokohama City

Claims (1)

[Claims] (1) Rotate left and right and downward 6■ With the mirror body supported by the function: Rotate the mirror body 1! a motor for rotating the motor; and an idling mechanism that is interposed in a rotational force transmission system that connects the motor and the mirror body and that idles when a torque greater than or equal to the chamber is applied; a rotation detector that outputs a signal; a limit switch that operates when the mirror body rotates to a predetermined absolute position; and a rotation detector that outputs data corresponding to the mirror position desired by each driver. a personal memory that stores the amount of relative displacement from a predetermined origin position in the motion area; a current position memory that stores current position data of the mirror body obtained by accumulating outputs of the rotation detector; the current position memory a preset return control means for driving the motor so that the stored contents of the personal memory match the contents of the personal memory, and setting the mirror body at a position desired by the driver; and origin return control means for matching the contents of the current position memory with the actual mirror position using the output of the limit switch; and: the preset return control means or the origin return control means generating a motor drive output 1. An electric mirror device comprising: a motor protection means that cuts off power to the motor when a drive output is continuously generated for a certain period of time or more.