JPS59186732A - Automatic opener/closer for opening cover - Google Patents

Abstract

PURPOSE:To miniturize a drive mechanism by forming switch operating groove pattern of fewer steps than limit switches onto the cam circumferential face in an automatic opener/closer for car sun-roof while arranging the switches along the circumferential face. CONSTITUTION:A cable drive mechanism for driving the slide panel in sun-roof will reduce power of motor 11 through a reduction gear 9 and transmit to a gear 10 thus to advance/back the toothed cables 24, 25 gearing with the gear 10. An eccentric bearing 19 having eccentric circumferential face 19a is fitted at the leading edge of rotary shaft 15 of the reduction gear 9 while a cam 20 is pivoted at the pin shaft above the circumferential face 19a. Upon rotation of the rotary shaft 15, a cam 20 is rotated through a planetary gear 20 and a pin 202 to control the motor 11 in accordance to the outputs from limit switches 200a-200c provided near the cam 20 having three grooves 20b-20d formed on the circumferential face in two steps.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for closing openings such as windows, doorways, roof openings, etc.
Regarding automatic opening/closing devices that open and close translucent plates, opaque plates, panels, etc. (hereinafter referred to as aperture covering materials or panels) in response to switch operations, and in particular, automatic opening/closing of automobile sunroofs, although not intended to be limited thereto. Regarding equipment.

For example, an automobile sunroof is equipped with an automatic opening/closing device that tilts or slides the sunroof (roof panel) open/close in response to a driver's switch operation. An automatic opening/closing device that opens and closes both tilt and slide, or a deflector (
Those that perform relatively complicated opening and closing operations, such as raising and lowering the air conditioning plate when the panel is opened, and those that perform relatively complicated opening and closing operations, such as raising and lowering the air conditioning plate when the panel is opened, and those that require the load on the opening/closing mechanism to be controlled by motor current, etc. For devices that perform safety operations such as detecting abnormal loads and stopping the motor, the opening degree and opening mode of the panel (for example, between slides, tilt opening, etc.)
It is necessary to switch the operating mode of the opening/closing mechanism or change the comparison value for overload detection depending on the situation. Conventionally, position detection means such as a potentiometer or rotary encoder are connected to the opening/closing mechanism, and the opening/closing operation mode is switched when the panel position reaches a predetermined position, or a switch operation cam is connected to the opening/closing mechanism, and the A plurality of limit switches are placed facing each other, and the panel position is detected by opening and closing the limit switches by rotation of a cam, and the opening/closing operation mode is switched at a predetermined position. An automatic opening/closing mechanism using a cam and a limit switch is often used because it does not complicate the mechanism and allows for simple and accurate correspondence between mechanical positions and detection signals. Therefore, when using a cam and multiple limit switches, if the operating mode or panel position (area) to be classified is M, it is necessary to use several n limit switches such that 2 to the n power is M or more. Therefore, in the past, switch operation grooves were formed in n stages on the side surface of the cam, and each switch was opposed to each groove. If the cam is circular,
A groove is formed on the circumferential surface to form a predetermined unevenness (turn (switch opening/closing pattern)) in n stages of upper and lower sections.Therefore, there are many operation modes. The thickness of the cam (height of the side surface)
becomes large, and the arrangement height of the limit switches along the cam thickness direction becomes large, resulting in a wide force τ. However, in the interior of a car, etc., the drive motor and reduction gear are installed in the small space between the roof and the interior, so it is often impossible to increase the thickness of the cam even slightly.

For example, in the slide-only sunroof opening/closing device disclosed in Japanese Patent Application No. 58-035087, since only the slide can be opened and closed, the cam may have two stages of switch operation grooves, and the number of limit switches is two.

This time, we have further developed an automatic opening/closing device that adds tilt opening/closing to this sliding opening/closing, but this has at least 5 operating modes, the number of limit switches n is 3, and 3 sets of switch operation groove patterns are required. However, by forming three grooves on the side circumferential surface of the cam and placing a limit switch facing each groove, the motor and reducer can be assembled, and the cam can be attached to the reducer. It was not possible to install the combined drive unit between the roof and interior of the car.

The first object of the present invention is to provide an automatic opening/closing device that performs panel opening/closing operations in multiple modes without significantly increasing the dimensions of the panel opening/closing drive device. A second purpose is to reduce the height of the side surface of the cam that opens and closes the switch in response to rotation, and to reduce the array length of a plurality of switches along the height direction of the side surface of the cam.

In order to achieve the above object, in the present invention, if the required number of switches is n, a switch operation groove (groove pattern for switch opening/closing operation) is formed on the side surface of the cam in steps of n-1 or less.
, the entire or part of the switch operation groove of one or more stages is shared for opening and closing operations of two or more switches, and the plurality of switches n
An operation mode signal generating means is connected to the switch, which generates a signal indicating the classification of the operation mode, that is, an operation mode signal, by a combination of opening and closing of the switches.

Therefore, the opening/closing control device that controls forward rotation, reverse rotation, and stopping of the motor is configured to control the forward rotation, reverse rotation, and stop of the motor according to the instructions from the panel opening/closing instruction switch device and the operation mode signal.
Reverse energization and stopping shall be performed.

According to this, the shape of the cam does not become particularly large, and the arrangement of the plurality of n switches does not become particularly large.
To install an opening/closing drive source equipped with a cam and multiple switches in a narrow space such as between the roof and interior of a car.

In the case of panels where there is a possibility that objects or people may get stuck when opening or closing, the panel will automatically stop if something gets stuck, and preferably it will stop automatically and move slightly in the opposite direction.

It is preferable to evacuate in order to ensure the safety of automatic mechanisms, objects, and people. Additionally, there is generally a variation in mechanical drive resistance due to the opening/closing position of the panel.

Therefore, in a preferred embodiment of the present invention, an overload of the electric drive mechanism is detected and the mechanism is automatically stopped when the electric drive mechanism is overloaded. Further, in order to prevent normal load fluctuations of the mechanism itself from being detected as overloads, the comparison reference value for overload detection is shifted in conjunction with the operation of the mechanism.

The present invention will be described below based on embodiments shown in the drawings.

FIG. 1 shows an outline of an electric drive mechanism according to an embodiment of the present invention.

In this embodiment, a roof panel 23 that opens and closes an opening 22 of a roof 21 of an automobile is driven and controlled. An opening 22 is formed in the roof 21 of the automobile, and this opening 22
is slid open/closed and tilted open/closed by the roof panel 23.

Panel 23 is actuated by drive cables 24.25. The sunroof panel 23 is fixed to brackets placed on both sides of the opening 22 (only one side is shown in FIG. 1).

As shown in FIG. 2, an elongated hole 27 that descends toward the front of the vehicle is provided on the front edge side of the bracket 26, and a pin 28a of the front guide 28 engages with this elongated hole 27a.

A front shoe 29 is attached to the lower part of the front guide 28. Furthermore, one end of a front ring 30 is rotatably attached to the front guide 28 via a shaft 31, and the other end of this front ring 30 is attached to the bracket 26. , axis 32
It is pivoted on.

As shown in FIG. 4, an engagement pin 38 is arranged on the rear edge side of the bracket 26, and the plate 33 is fixed with a locking pin 34.35.

A guide slot 36 is formed in the plate 33, and the slot 36 has a horizontal portion provided on the front side of the vehicle and an inclined portion rising from the rear end of the horizontal portion toward the rear of the vehicle. Further, a tilt pin 37 is installed at the front end of the plate 33.

The link 39 has a roller pin 4o at its front end, a rear shoe 41 at its rear end, and is rotatably pivoted, and is formed in an arc shape centered on the front end of the guide rod 36 which can be engaged with the tilt pin 37 at its upper end. It has a cutout groove 42 and a guide pin 43.

The guide pin 43 is engaged with and guided by the guide slot 36.

The end portions of the drive cables 24, 25 are connected to the rear shoe 41, as shown in FIG. Therefore, the movement of the drive cables 24 and 25 is controlled by the rear shoe 41 and the guide link 3.
9. Guide pin 43 of guide link 39. And, via the guide slot 36 in which the guide pin 43 is engaged,
It is transmitted to the bracket 26 and further to the front guide 28.

As shown in FIGS. 4 and 5, the front shoe 29
The rear shoes 41 are engaged with and guided by guide rails 44 disposed on both sides of the roof opening 22. Further, a foot portion 40a of the roller pin 40 is engaged and guided in a rail groove 44a on the inside of the vehicle interior of the guide rail 44.

On the other hand, in the vehicle exterior rail groove 44b of the guide rail 44,
A portion 38a between the engagement pins 38 is engaged and guided.

Furthermore, as shown in FIGS. 4 and 6, a block 45 is fixedly arranged inside the guide rail 44, and a roller pin 40 provided on the guide link 39 is mounted on the inside of the vehicle.
An inclined/slanted groove 46 that guides the head 40b of the engagement pin 38 that is fixed to the bracket 26 on the outside of the vehicle interior.
An inclined groove 47 is formed to guide the. Furthermore, cutouts are formed in the flange portions 48 and 49 of the guide rail 44 at the locations where the blocks 45 are arranged. Therefore,
The engagement pin 38 and the roller pin 40 are connected to the guide link 3
As the rails 9 move forward, they are guided by the inclined grooves 46 and 47, respectively, and rise, and can be sequentially removed from the rail grooves 44b or 44a of the guide rail 44.

Furthermore, flanges 50 and 50b having rectangular openings 50a are formed at the upper end of the block 45 (FIG. 4). This opening 50a has a stopper 5 disposed on the other end side of the leaf spring 51 whose one end is fixed to the front guide 28.
2 is engaged when the panel 23 is closed and tilted open. As a result, movement of the front guide 28 toward the front of the vehicle is stopped. In addition, when the movable panel 23 is slid open,
The tip 51a of the leaf spring 51 is located at the lower end 2 of the bracket 26.
6a, and is slidable within the guide rail 44. Therefore, as the engagement pin 38 moves up the inclined groove 47 of the block 45, the leaf spring 51, which had been pressed by the lower end 26a of the briquette 26, is removed.
moves upward and engages with the opening 50a of the block 45 (fourth
(see figure).

Further, an arm 52 is arranged on the front guide 28, and a rain gutter 53 is connected to the rear end.

Therefore, the rain gutter 53 always slides together with the roof panel 23, and can completely catch raindrops from the rear edge of the panel 23 (see FIGS. 1, 4, and 7).

Referring again to FIG. 1, the deflector 13 is disposed below the edge of the opening 22 on the front side of the vehicle, and is pivotally mounted at the bottom of the opening on the side of the vehicle. Deflector arms 121, 122 engage the deflector 13 at both ends thereof.

To explain the operation of the mechanism described above, the panel 23 normally closes the opening 22 as shown in FIG. When the drive cable 25 is actuated to move the rear shoe 41 toward the rear of the vehicle, the guide link 39 also moves backward. The guide pin 43 is engaged and guided from the horizontal part to the inclined part of the guide links 1 to 36 of the plate 33, and the panel 23 is pulled rearward via the play 1 to 33, that is, the bracket 26, and the rear edge is pulled downward. energized. Therefore, the engaging pin 38 fixed to the bracket 26 descends along the inclined groove 47 of the block 45, and the movable panel 23 descends while moving rearward (FIGS. 7 and 8). At this time, when fully opened, the pin 31 is slightly lower than the pin 32, as shown in FIGS. 2 and 5, but as it descends, the front link 30 is lowered as shown in FIGS. It is horizontal, so it can be accommodated in the rear lower part of the roof 21 of an automobile, and the opening 22 is opened by sliding the panel 23. When this opening occurs, when the weather lip at the leading edge of the panel 23 climbs over the deflector 13 and further over the deflector arms 121.122, the spring force acting on the deflector arms 121.122 causes the arms 121.12. tries to stand up, causing the deflector 13 to stand up. The sliding state of the panel 23,
The relationship with the upright position of the deflector is shown in 11b to 1id, and the state in which the panel 23 is fully slid open is shown in FIG. 11a.

On the other hand, from the position shown in Fig. 5 (fully open), drive cable 2
5 to move the rear shoe 41 forward, the guide pin 40b' arranged at the front end of the guide link 39 rises along the inclined groove 46 of the block 45, and the guide link 39 rotates and rises while moving forward. (See Figure 9). As a result, the notch groove 42 of the guide link 39 is aligned with the plate 3.
It engages with a tilt pin 37 implanted in 3. When the rear shoe 41 moves further forward, the guide link 39 rotates upward while moving forward, causing the rear edge of the panel 23 to rotate upward and stand up, opening the opening 22 (see FIG. 10).

Furthermore, since all the operations of the panel 23 are transmitted through the bracket 26, after the panel 23 is assembled to the roof 21 of the automobile, the panel 23 is inserted into the opening 22 with the bracket 26 in the fully closed position as shown in FIG. are loosely fixed to the bracket 26 by bending the weather strip and fitting them together.

As described above, when the shoe 45 is slid toward the rear of the vehicle from the fully open state (FIGS. 5 and 11b), the panel 2
3 slides open and the deflector 13 stands up. When the shoe 45 is driven forward of the vehicle from the state where the panel 23 is between slides, the panel 23 closes the opening 22, and the weather 1 to the lip on the front edge of the panel initially rides on the deflector arms 121 and 122 (Fig. 11c).
Next, it rides on the deflector 13 and closes the opening 22 (
Figure 11b). When the shoe 45 is further driven forward from this fully open state, the rear end of the panel 23 rises and becomes tilted open (FIGS. 9 and 10). That is, when the shoe 45 is driven toward the rear of the vehicle from between the tilt parts (Fig. 10),
The panel 23 first tilts closed to completely close the opening 22 (fully opens), then slides back to stand up the deflector 13, and then slides fully open. Conversely, when the shoe 45 is driven forward of the vehicle with the slide fully open, the panel 2
3, the deflector 13 falls down, and then the panel 23 is fully opened by climbing over this deflector 13, and furthermore, the rear end of the panel 23 is erected, and the tilt is fully opened.

In this way, by simply sliding the shoe 45 backward and forward, the panel 23 changes its state from tilt I - fully open - tilt partially open - fully closed - slide partially open - deflector erect - slide fully open, and vice versa. Then, the state changes as follows: slide fully open - slide portion amount - deflector lowered - fully closed - tilt portion amount - tilt fully open.

The cables 24 and 25 that drive the shoes (45) on the side of the vehicle are connected to a cable drive mechanism that mainly includes the reducer 9 and the motor 11.
Depending on the positive and reverse biasing of the cables 24 and 25,
They are driven forward and backward in opposite directions by the reducer 9 section.

FIG. 12a shows a plan view of the cable drive mechanism, and FIG. 12b shows a sectional view. The reducer 9 includes a worm 141. which is fixed to the rotating shaft of the motor 11. It meshes with the worm 141,
and a worm wheel gear 14 pivotally mounted on the rotating shaft 15.
2. Friction clutch 16 including disc spring 161 in gear 142
A gear 143 connected to the rotating shaft 15 through
．． Gear 1 meshing with gear 143 and fixed to rotating shaft 18
45, and a toothed cable 24 fixed to the rotating shaft 18.
．． A gear train is composed of gears 10 and the like that mesh with gears 25 and 25.

As shown in FIG. 12c, an eccentric bearing 19 having an eccentric circumferential surface 19a is fitted to the tip of the rotating shaft 15, and a cam is mounted on the pin-shaped shaft above the circumferential surface 19a. 2
0 is pivoted. A planetary gear 20 is attached to the eccentric bearing 19.
1 is pivotally mounted.

The planetary gear 201 meshes with the housing inner teeth 210, and a pin 202 is formed on the planetary gear 201. Further, a cam 20 is pivotally attached to the leading end of the rotating shaft 15. A through hole 20a is formed in the cam 20, and a pin 202 is engaged with this hole 20a.

As a result, the bearing 19 rotates as the rotary shaft 15 rotates, the planetary gear 201 meshes with the housing inner teeth 210 and rotates differentially, and the pin 202 moves.
The cam 20 is rotated by being pushed by the cam 20.

On the circumferential surface of the cam 20, there are three grooves 20b divided into upper and lower stages.
, 20c and 20d are formed, and if the upper surface is referred to as the upper side and the back surface is referred to as the lower side in the state shown in FIG. 12a, the plane when the cam 20 is viewed from above has the shape shown in FIG. 13a. , the plane viewed from the bottom ′ has the shape shown in FIG. 13b. Grooves 20b and 20c are formed in the upper part of the side surface, that is, the circumferential surface, of the cam 20, and a groove 20d is formed in a wide range in the lower part, and the upper part groove 20c is continuous with the lower part 20d in the vertical direction. .

In this embodiment, in controlling the opening and closing of the panel 23, the states of the panel 23 are as follows: a slide open state in which the deflector arm does not run on the deflector arm (mode ■1), a slide open state in which the deflector arm rides on the deflector arm (mode ■), and a slide open state in which the deflector arm does not ride on the deflector arm (mode ■). Slide open state just before the slide is fully opened (Mode I)
2), Slide closed state from just before slide fully closed to fully open (mode ■), Tilt closed state from chill 1-down completion to fully closed (mode ■), and Chill 1-open state (mode ■) 6 It is detected as a state, and the panel opening/closing control mode is specified in each state. In this way, there are a large number of states (at first glance there are 6 modes, but there are 11 and 1 modes).
2 is essentially the same mode (to be more precise, it is 5 modes), so normally the cam 20 is formed with grooves in three or more stages, and three or more limit switches are placed opposite each groove to detect the rotational position. It is necessary to However, since the cable drive mechanism is placed in an extremely narrow space directly under the car roof, forming grooves in three stages on the circumferential surface of the cam 20 and arranging limit switches in three stages reduces the height of the cable drive mechanism. This makes it difficult to install a cable drive device. Therefore, in this embodiment, a plurality of cam grooves are formed in only two stages on the circumferential surface of the cam 20, and the limit switch 200 is
a and 2000 are made to face the lower groove 20d, and the limit switch 200b is made to face the upper grooves 20b and 20c to minimize the spread in the height direction. Panel 23
Since the cam 20 rotates less than 360'' over the entire operating range (from fully opening the slide to completing the tilt-up), a groove pattern dedicated to the switch 200b is formed on the upper cam surface with grooves 20b and 20c. Mode ■
and V are separated from other modes. The switches 200a and 2000 share the same cam surface, but in this example, the three modes 12 (same as 11), ■, and ■ need only be differentiated, so the switches 200a and 200c are placed along the circumference of the cam 20. By shifting the arrangement position, the switch 200a is opened and closed at only one end of the single groove 20d in the lower stage, and the switch 200c is opened and closed at both ends of the groove 20d, and the above three modes are detected separately based on the combination of both open and closed states. That's what I do.

FIG. 14 shows the relationship between the rotation angle of the cam 20, the opening/closing of the limit switches 200a to 200c, the opening/closing state of the panel 23, and the panel opening/closing control operation mode. Limit switches 200a and 200c are normally closed, and limit switch 200b is normally open.

When the panel 23 is in the slide fully open position (FIG. 1 ID), both the limit switches 200a and 220c are closed facing the groove 20d, and the limit switch 200b is not facing the groove 20c and is closed. In this state, the panel 23 is connected to the deflector arms 12, .
122 (mode It). While the panel 23 is riding on the deflector arms 121 and 122 (mode ■), only the switch 200b is connected to the groove 20.
The switch is open facing b.

After the panel 23 completes mounting the deflector arm,
Switch 20 until just before the slide is fully opened (mode 12)
0b comes off the groove 20b, the switch is closed, and switch 2
00a remains closed, and the switch 200c initially faces the groove 20d and is closed, but in the middle the switch 200c faces the groove 20d.
When the switch comes off, the switch opens. Just before the slide is fully opened, the switch 200a comes off the groove 20d, opening the switch. When fully opened, the switch 200c moves to the groove 20d.
The switch is closed opposite to.

From just before the slide is fully closed to fully closed (mode ■), it is distinguished by the opening of the switches 200a and 200c.

From full open to tilt down completion (just before the tilt is fully opened) (mode ■), the switch 200c is closed by the groove 20d, and the limit switch 200b is closed by the groove 20c.
This is the state until the switch is opened.

Between the completion of the tilt down and the full opening of the tilt (mode 2), the switches 200a and 200b are open after the switch 200 is switched to the open position by the groove 20c, and the switch 200C is closed.

Referring again to FIGS. 12a and 12b.

If the cable 24 or 25 is stopped and restrained by a force exceeding a certain level, the friction clutch 162 will be forced to stop, causing the motor 1
1 rotates the gear 142, but the shaft J5 and the gear 143 fixed to the shaft do not rotate. That is, the clutch 162 is provided as one mechanical safety mechanism.

FIG. 15a shows the configuration of the operation mode signal generation circuit 190 that generates status signals according to the opening and closing of the limit switches 200a to 200c, and FIG. 15b shows the positive,
An electric circuit for controlling and energizing the reverse drive is shown.

The operation mode signal generation circuit 190 is connected to the limit switch 2
In response to the opening and closing of 00a to 200c, the operation mode signals shown in Table 1 below are generated.

The outputs a - f of the operation mode signal generation circuit 190 in Table 1 are
It is applied to the base of the transistor of the electrical circuit shown in Figure 5b. In other words, the 4th output a is the slide opening/closing instruction switch 5
The output b is applied to the base of the transistor Qa which connects between the open contact of 0 and the relay coil 33, and the output b is applied to the base of the transistor Qbl of the temporary forward rotation energizing circuit 130, the base of the transistor Qb2 of the motor stop circuit 120, and the base of the transistor Qb2 of the motor stop circuit 120. outputs C and d are respectively applied to the bases of transistors Qc and Qd of latch circuit 180, output e is applied to the base of transistor Qe of storage circuit 140, and output f is applied to the base of transistor Qb3 of circuit 150. It is applied to the base of transistor Qf of comparison circuit 100.

Referring to FIG. 15b, one end of the motor 11 is connected to the power supply voltage +12V via the relay contact 31 of the motor drive circuit 30.
Or connected to the chassis ground, and the other end is connected to the power supply voltage +12V via the load detection resistor 40 and relay contact 32.
or connected to chassis ground. Relay 3] and contact piece 32 that make this connection are connected to relay coil 33, respectively.
and 34. This motor drive circuit 30 constitutes an electric driver in this embodiment, and the resistor 40 is used as means for detecting the load.

Next, first, the electric circuit configuration and control operation for controlling the sliding opening and closing of the panel 23 will be explained.

When the slide opening/closing instruction switch 50 is closed to the open side by the driver of the car, the relay coil 33 switches to the switch 50.
When the relay contact 31 switches to make contact with the chassis ground, current flows through the path of power supply voltage +12V - contact 32 - resistor 4 - motor 11 - contact 31 - chassis ground, and the motor 11 rotates in the normal direction. Then, the sunroof panel 23 opens. When the switch 50 is closed, the relay coil 34 is energized through the transistor 122 and the switch 50, and the relay contact piece 32 is brought into switching contact with the ground side, and the power supply voltage +12V - contact piece 31 - motor 11 - resistance 40 - Current flows through the path of the contact piece 32, causing the motor 11 to reverse and the panel 23 to close.

The constant voltage power supply circuit 160s applies a constant voltage Vc to each part of the circuit.

The filter circuit 60 is a filter that removes high frequency fluctuations (high frequency components) of the motor load detection voltage (voltage of the resistor 40), and in addition to filter elements (resistors and capacitors), it removes input voltage higher than the voltage Vc. Vc+Vr(V
r is a forward voltage drop of the diode), and diodes 6] and 62 are provided to protect the subsequent operational amplifier by cutting the input voltage lower than the ground potential to -Vr.

Amplification circuit 70 amplifies the output of filter circuit 60 to a required level. The output Vs of this circuit 70 will be treated as a load detection voltage from now on.

The adder circuit 80 adds a voltage at a permissible level to the load detection voltage.

The delay circuit 110 provides a delay to the output of the addition. In order to reduce the difference in sensitivity between the rise and fall of the addition output, a diode 113 is connected to the coin capacitor 112 so that a delay is applied only at the rise and no delay is applied at the fall.
In addition, in order to correct the forward voltage drop of the diode 113, the diode 113 is idealized by the operational amplifier 111.

The storage circuit 140 divides the difference Vc-Vs between the load detection voltage Vs and the constant voltage Vc using resistors 145 and 146, and applies the divided voltage to the storage capacitor 141. Panel 2
3. When closing, the transistor 143 is turned off for a predetermined period of time from the start of the closing drive, and the transistor 142 is turned on.
The capacitor 141 is connected to V c − by resistors 145 and 146.
A voltage obtained by dividing Vs is applied, and after a predetermined time, the transistor 143 is turned on and the transistor 142 is turned off, and a constant voltage Vc is applied to the cathode of the diode 144 through the resistor 149 and the diode 148.
44 becomes a reverse bias and is cut off, and the voltage obtained by dividing V c -V s by resistors 145 and 146 just before that is held in capacitor 141 . At the time when the deflector arm runs over, the transistor Qe is turned off, so it is connected to the resistors 145 and 146 through the resistors 140a and 140b.
A voltage corresponding to Vs that is higher than the voltage obtained by dividing Vc-Vs is applied to the capacitor 141.

The delay detection level check circuit 9o compares the delay output of the delay circuit 110 and the storage output of the storage circuit 140, and outputs the lower voltage. The delayed output is applied to the inverting input terminal of operational amplifier 91, and the storage output is applied to the non-inverting input terminal. When the memory output is higher than the delayed output, the amplifier 9
The output of 1 is positive and is cut by diode 92. Therefore, the delayed output is given to the comparison circuit 100 at the subsequent stage.

When the storage output is lower than the delayed output, the output of amplifier 91 is negative and the delayed output flows through diode 9.2 to the output of amplifier 91, causing the delayed output to drop to the storage voltage level. The voltage at the anode of the diode 92 (the lower of the storage voltage and the delay voltage) is equal to the overload reference voltage Vmd.
is applied to the comparison circuit 100 at the subsequent stage. ' The comparison circuit 100 compares the output of the delay detection level check circuit 90, that is, the overload reference voltage Vmd and the detected load voltage V.
s, and if the latter Vs is lower than the former Vmd, a low level "0" signal indicating normality is generated, and the latter Vs is lower than the former Vm.
If it is higher than d, it outputs a high level "1" signal indicating an abnormality.However, when transistor Qf is on (circuit 1
When the output f of 90 is at a high level 1 and mode (2), it is constrained to a low level "0".

The motor stop circuit 120 turns on the transistor 12 when an abnormality is detected.
2 is turned off, the relay coil 34 is de-energized, and the motor 11 is stopped. That is, the output of the comparison circuit 100 is at a low level "0" when the load is normal, and the output of the comparison circuit 100 is at a low level "0".
is off and the 1-transistor 122 is on, but in the event of an abnormality, the output of the comparator circuit]00 is "1", which turns on the 1-transistor 121 and turns off the transistor 122.
The current path of the relay coil 34 is cut off.

Note that the transistor 123 of the circuit 120 is turned on when the circuit operation is abnormal, and turns off the transistor 122 (
(motor stop).

The temporary forward rotation urging circuit 130 is activated when an overload is stopped while the panel 23 is being driven to close (the motor is reversed) (circuit 100
output is "1"), the transistor 134 is turned on, the relay coil 33 is energized, the motor 11 is energized for forward rotation (the panel 23 is opened), and after a predetermined short period of time, the transistor 134 is turned off and the motor 11 is turned on. (timed forward rotation energization). This is because when an overload occurs during the panel closing drive, there is usually a person or something stuck, so in that case, the panel 23 is slightly opened to make it easier to remove the stuck object.

The operation of circuit 130 will be explained in more detail. When the transistor 121 of the motor stop circuit 120 is turned on (when the output of the comparison circuit 100 becomes "1" due to abnormality detection), the rotation of the motor 11 in the panel 23 closing direction is stopped by the circuit 120 as described above. At the same time, 1 to transistor 1
21 turns on, the right end of the capacitor 131 becomes the ground level, and charging current begins to flow into the capacitor 132 through the resistor 132. As a result, the potential at the inverting input terminal of the operational amplifier 133 decreases, and the output of the amplifier 133 becomes "1".
'', the transistor 134 is turned on, current flows through the relay coil 33, and the motor 11 is energized to rotate forward (panel 2 open). As charging of the capacitor 131 progresses and its potential exceeds the constant potential applied to the non-inverting input terminal of the amplifier 133, the output of the amplifier 133 changes to "0", the transistor 134 is turned off, and the relay coil 33 is turned off. The power is cut off and the motor 11 is stopped.

In the show 1-detection circuit 170, if the switch 50 is closed to the panel 23 closed side when the transistor 122 is shorted (both the base and collector are at ground level), the transistor 122 will not operate and the overload protection operation will not be performed. Added for safety purposes. If the transistor 122 is on (short-circuited) during an abnormality (the output of the circuit 100 is "1"), the anode of the diode 171 is at the ground level because the 1-transistor 121 is on, and the anode of the diode 172 is at the ground level. is also at ground level (because the switch 50 is closed).

Therefore, the capacitor 131 via the diode] 73
The left side of the capacitor 131 is also at ground level.
is not charged, the inverting input terminal of the amplifier 1330 is maintained at a low level, and the "1" output of the operational amplifier 133 makes the 1-transistor 134 conductive, and the relay coil 134
energize. In this state, both the relay coils 33 and 34 are energized, the relay contacts 3 and 32 are both grounded, and the motor 11 is stopped.

The time limit circuit 150 operates for a predetermined period of time after the switch 50 is closed (the time until the current flowing into the motor subsides).
It outputs a low level "0" signal that turns off the transistor 143 for a certain period of time, and outputs a high level "1" signal that turns it on after a predetermined time has elapsed. That is, when the switch 50 is closed to the panel 23 closing side, charging of the capacitor 151 starts, and the potential at the right end of the capacitor 151 is initially low, and the output of the operational amplifier 153 becomes "0" (from 1 to transistor 1).
43 off). Then, charging progresses through the resistor 152 or the parallel resistors 152 and 152a, and as the potential at the right end of the capacitor 151 increases, the output of the amplifier 1.53 changes to "1" (transistor 143 turns on). This timed operation is intended to prevent the inrush current at the start of the reverse rotation of the motor 11 (closing the panel 23) from being detected as an overload.

Along with this, during the predetermined time period, the amplifier 1
53's output "0" turns off the transistor 143, turns on the static transistor 142, and connects the capacitor 141 to
A voltage obtained by dividing Vc-Vs is applied by resistors 145 and 146. At the same time, the output "0" of the amplifier 153 is applied to the output terminal of the comparator circuit 100 via the diode 157,
The output of the comparator circuit 100 is constrained to "O" (normal) to prevent the motor from being stopped due to abnormality detection. After the predetermined time has elapsed, the output of the amplifier 153 becomes "1",
Transistor 143 is turned on, transistors 1 to 142 are turned off, diodes 144 and 147 are turned off, and V is applied to capacitor 141, and immediately before that, resistors 145 and 146
The voltage obtained by dividing c-Vs is held. At the same time, the output "1" of the amplifier 1.53 is applied to the diode 157 to release the constraint on the output of the comparator circuit 100.

If the output of the amplifier 153 does not return to "1" after a predetermined period of time, that is, if the operation of the circuit 150 is abnormal, the comparator circuit 1
The output of 00 remains constrained to "0" (normal),
Overload protection operation (motor stop) is not performed. In order to avoid this, if the output of the amplifier 53 is "0" (indicating a timed operation and abnormal) even after the predetermined time, the capacitor 157c charged through the resistor 158 is boosted to a sufficiently high voltage. As a result, the potential at the upper end of the resistor 158 becomes low, and the amplifier 1 of the temporary forward rotation energizing circuit 130
Since the inverting input terminal of 33 becomes a low level through diode 135, the output of amplifier 133 changes to "1", transistor 134 becomes conductive, and Ray coil 33 is energized. As a result, since the switch 50 is closed (panel 23 closed), both the coils 33 and 34 are energized, and the contact pieces 31 and 32 are both connected to ground, and the motor 1
1 stops. In this way, capacitor 151. resistance 1
When the timed operation based on the time constant 52 is not normal, the transistor 134 is then turned on (determined by the time constants of the resistor 158 and capacitor 157c) and the motor is stopped.

The motion detection circuit 160 includes the memory circuit 140. It detects whether the system of delay detection level check circuit 90 and comparison circuit 100 and time limit circuit 150 are operating normally, and when abnormal operation occurs, transistor 1 of motor stop circuit 120 is activated.
23 is turned on, the l-transistor 122 is turned off, and the motor is stopped. That is, circuit 140.90,1.
When 00 and 150 are operating normally, the output of circuit 100 temporarily becomes "1" in response to the inrush current of the motor immediately after the motor 1 starts to reverse (panel 23 closes), and when the inrush current subsides. This time, a circuit abnormality is detected using the fact that the value becomes "0". When the output of the amplifier 101 of the circuit 100 is at the "0" level, the circuit 160
The inverting input terminal of the amplifier is approximately 3
v, one-way valve reversal input, switch 50 is closed (panel 2
3 closed) side, resistors 166, 167.1.
56,159 keeps it at about 4. Therefore, amplifier 1
The output of 61 is at the "1" level, and the diode 168 is cut off. Immediately after the switch 50 is connected to the closed side, for a predetermined period of time, the output of the amplifier 153 is set to "0" in order to disable the overload protection operation in response to the inrush current, and the diode 169 becomes conductive. In order to set the anode side of transistor 168 to "0" level, the base potential of transistor 123 also becomes "0" level, and this transistor 12
3 is off.

In the normal case, the output of the amplifier of the comparator circuit 100 is "1" due to the inrush current immediately after the switch 50 is opened to the closed side.
appears (however, this is cut by the output "0" of the amplifier 153 through the diode 157). As a result, the potential at the inverting input terminal of the amplifier 161 of the operation detection circuit becomes approximately 5.2V, and the potential at the non-inverting input terminal is approximately 4■, so the output of the amplifier 161 becomes "0". Also, since the non-inverting input terminal is also pulled to "0" through the resistor 166, the amplifier 10
Even if the output of amplifier 161 becomes "0", the output of amplifier 161 becomes "0".
0" is maintained. As a result, the diode -1<+6g is energized and the anode side becomes "0", so the transistor 1
23 is turned off, and the I-transistor 122 remains on (the motor continues to rotate in reverse).

However, if the output of the amplifier 101 does not become "1" within the predetermined time after the switch 50 is closed to the panel 23 closing side (if the circuit is abnormal), the amplifier 16
After a predetermined period of time, the output of the amplifier 153 becomes "1" while the output of the amplifier 153 remains "1", and this causes the resistors 124, 125, 1
A voltage obtained by dividing Vc at 26 is applied to the base of the transistor 123 of the motor stop circuit 120,
3 turns on, transistor 122 turns off, and the motor stops reversing.

Below, the motor control operation during slide opening/closing is as follows:
Motor energization control in operation modes E1 to E (see FIG. 14 and Table 1) will be explained.

1 Panel 23 slide open - J When the switch 50 is closed to the open side while the panel 23 is not slid fully open (full open or partial), the relay coil 33 is energized, the relay contact 31 is closed to the ground side, and the motor is closed. 11 rotates in the normal direction, and the motor voltage is applied to the filter circuit 60. A voltage that is inversely proportional to the motor load is applied to the filter circuit 60. Therefore, in this case, V
When s is high, the motor load is light, and when Vs is low, the motor load is high. As a result, the output of comparator circuit 100 is always "0" indicating motor energization. Overload detection and overload protection operations are not performed. This is because when the panel 23 is slid open, no human body or objects are trapped. Since the timer circuit 150 is not energized, the 1-transistor 143 of the memory circuit 140 is off, and the transistor 1
42 remains on. When the panel 23 reaches the slide fully open position and the mechanical system cannot move, the gear 142 idles due to the friction clutch 162 (FIG. 7) of the mechanical drive system described above, the gear 143 stops, and the motor rotates. , the panel 23 will not move. In this state, the switch 50 is returned to the neutral position to stop the motor.

輯) Panel 23 slide closing operation When the switch 50 is closed in a state where the panel 23 is not fully open (slide fully open or partially slid), the relay coil 34 is energized through the transistor 122,
And the time limit circuit 150 is energized (grounded). When the relay coil 34 is energized, the contact piece 32 closes to the ground side,
Motor 11 begins to rotate in reverse.

Further, in the circuit 150, the output of the amplifier circuit 153 becomes "0", which turns off the transistor 143 of the storage circuit 140 and turns on the transistor 142, and limits the output of the comparison circuit 100 to "0". As a result, the transistor 121 is turned off, the overload protection operation is stopped, and the capacitor 141 of the memory circuit 140 is connected to the resistor 1.
A voltage obtained by dividing V c -V s is applied at 45 and 146.

When the time limit circuit 150 normally times out, its output becomes "1", and the constraint on the output of the comparison circuit 100 is released.
The transistor 143 is turned on and the transistor 142 is turned off. Thereby, the storage circuit 140 stores in the capacitor 141 the voltage obtained by dividing V c -V s by the resistors 145 and 146 immediately before the time-over. The delay detection level check circuit 90 outputs the lower level of the voltage of the capacitor 141 and the delay output as the overload reference voltage Vmd. The comparison circuit 100 compares the load detection voltage Vs with Vmd, and when Vs is smaller (when the load is normal), it outputs "0" and the motor continues to be energized in the reverse direction. When Vs is higher (overload),
It produces an output of "1" and turns on transistor 121. This turns off the transistor 122, cutting off current to the relay coil 34, and at the same time, the output of the amplifier 133 becomes "1", the transistor 134 becomes conductive, the relay coil 33 is energized, and the motor rotates forward (panel 23). open) energized.

Thereafter, after a predetermined period of time, the output of the amplifier 133 returns to "0", the transistor 134 is turned off, the energization of the coil 33 is cut off, and the motor is stopped. When the load is normal,
When the motor continues to rotate in reverse and the panel 23 rides on the arm 122 (FIG. 11c), the switch 200b opens and enters the mode ■ control state, turning off the transistor Qe in the memory circuit 140 and causing the capacitor 141 to resist. It is recharged by constant voltage Vc through 140a and 140b, and the stored value increases.

This is because there is an increase in the load due to the arm riding up, so the reference value is increased accordingly. When the panel 23 is about to fully open, it becomes a motor ■, turns on the transistor Qf of the comparator circuit 100, restricts the output of the comparator circuit 100 to "0", and turns off the transistor 121 (the motor continues to reverse rotation).
to be restrained. This is to prevent the motor from stopping due to the fact that the weather strip of the panel 23 hits the edge of the opening 3 immediately before it is fully opened, increasing the motor load. When the panel 23 is fully closed with the weather strip compressed, it switches to mode ■, and the output of the circuit 190 is zero.
becomes 1 (see Table 1), the transistor Q b 2 of the motor stop circuit 120 is turned on, the transistor 122 is turned off, the coil 34 is de-energized, and the motor 11 is stopped.

Note that mode (2) is a state in which the panel 23 seals the opening 22, and in the slide closing and tilt closing (to be described later), when entering this mode (2), the drive of the motor is stopped. In this mode, only slide opening and tilt opening are accepted.

In modes 11 to ■, only sliding opening and closing is possible, so
Tilt opening/closing instructions cannot be received. FIG. 14 shows the relationship between each mode and whether the slide opening/closing instruction switch 50 and the tilt opening/closing instruction switch 51 can be instructed to open or close.

(2)-a Protection operation of the time limit circuit 150 The time limit circuit 150 controls the output of the amplifier 153 for a predetermined period of time.
1" (overload protection operation setting), the upper end potential of the resistor 158 will decrease due to the subsequent rise in the charging potential of the capacitor 157c, and the potential of the upper end of the resistor 158 will decrease through the diode 135 to the amplifier 13.
The inverting input terminal of 3 is set to a low level, the output of the amplifier 133 is inverted to "1", the transistor 134 is made conductive, the coil 33 is energized, the contact pieces 31 and 32 are both grounded, and the motor 1 is will be stopped.

(2) If the abnormality protection transistor 122 of the -b motor stop circuit 120 is short-circuited, the transistor 121 is turned on at the timing when the 1-transistor 122 is turned off (for example, at the time of overload), and at this time, the short circuit causes the diode 172 to turn off. is at ground level, diode 171 becomes ground level when 121 is turned on, a low level is applied to the inverting input terminal of amplifier 133 through diode 173, and 13
3 becomes "1", the transistor 134 becomes conductive, and the relay coil 33 is energized.

As a result, both relay coils 33 and 34 are energized, contact pieces 31 and 32 are both grounded, and the motor is stopped.

(2) When the circuit system up to the -c comparison circuit 100 is in normal condition, the output of the time limit circuit 150 is used to cut off the protective operation when the motor is started in reverse, and at that time,
The output of the circuit 101 temporarily becomes an abnormality indication level "1". This is normal operation.

When this output “1” appears, the motion detection circuit 160
The output of the amplifier 161 is set to "0", but when it does not appear, it remains "1" and the timer
50 completes the timed operation and inverts its output to "1" (the end of motor startup), the output of amplifier 161 is "1".
” and the output rlJ of the amplifier 153 causes the diode 1 to
．． The cathodes of transistors 68 and 169 are both "1", and a positive voltage is applied to the base of transistor 123 via resistors 124 and 125, transistor 123 becomes conductive and transistor 122 is turned off. As a result, the motor 11
stops reversing.

Conventional overload protection in which a comparison reference value is set by simply delaying the detected value is used in drive mechanisms where the load shows steady fluctuations.For example, as shown in Figure 16a, the motor load is When (detected value) fluctuates by 1 point up or down, the delay value (reference value) of the value (detected value + tolerance value) which is the sum of the tolerance value and the detected value is still low when the detected value is high, and the detected value When the detection value is low - 8, the detection sensitivity is high (the difference between the detection value and the reference value is small), but when the detection value is low, the detection sensitivity is quite low (the detection value is small). However, in the above embodiment, the delay circuit delays the rise of the detection signal but does not delay the fall of the detection signal. Since 110 is used, 16b
As shown in the figure, the variation in the difference between the overload reference value and the load detection value is smaller than in the conventional case (FIG. 16a), and the overload detection sensitivity is stabilized.

Next, the tilt opening/closing control operation will be explained.

A latch circuit 180 is connected to the tilt opening/closing instruction switch 51, and in the latch circuit 180, the comparator 1
81a, transistor 182a and comparator 181b
.

Transistor 182b is used as latch means, and transistors Qd, 182a and Qc, 182b are used as reset means. Tilt open/close instruction switch 5
The inverting input terminal of the comparator 181a is connected to the up indicating contact of No. 1, and the inverting input terminal of the comparator 181b is connected to the down indicating contact, and the non-inverting input terminals of these comparators are connected to a constant potential. has been added. One comparator 181a
The output of is applied to the inverting input terminal of the other comparator 181b via a diode, and similarly, the output of the other comparator 181b is applied to the inverting input terminal of the other comparator 181b.
The output of comparator 181a is applied to the inverting input terminal of one comparator 181a through a diode.

As a result, for example, when the tilt opening/closing instruction switch 51 is temporarily closed to the up contact side, the output of the comparator 181a is inverted from 0 to 1 indicating tilt up, and the transistor 182a is turned on to turn the up contact on the switch. Similarly to turning on, the potential is set to 0, and the output of the comparator 181a is set to 1.
hold it. When the transistor 182a is turned on, the relay coil 34 is energized, and the motor 11 rotates in the tilt opening direction (slide opening/closing closing direction: motor reverse rotation).

At the same time, comparator 18 is connected through diode 184a.
1b output becomes low level 0, transistor 182b
is turned off, and the inverting input terminal of the comparator 181b becomes a high level 1, so that the output of the comparator 181b is held at a low level 0.

When the output terminal of the comparator 181a is at high level 1 and the switch 51 is closed to the down contact side during the up operation latch, the output terminal of the comparator 181a is first pulled to the low level 0 through the diode 184b, and the transistor 182a is turned off. , the inverting input terminal of the comparator 181a returns to the high level I, the output of the comparator 1131a is held at the low level O, and the latch of the up operation is released. At the same time, the output of the comparator 181b becomes a high level 1, the transistor 182b is turned on, the inverting input terminal of the comparator 181b is held at a low level 0, the output terminal is held at a high level 1, and a down operation is latched. While the comparator 181a is outputting 1, the motor 11 is reversely energized and when it finishes tilting up, the mechanical load increases, the output of the comparator circuit 100 becomes 1, and the transistor 121 becomes conductive. diode 183
forces the output of comparator 181a to 0 through , thereby turning off transistor 182a. Then, the inverting input terminal of the comparator 181a returns to 1, the output of the comparator 181a is inverted to 0, and the holding of "1" indicating tilt up is released, that is, it is reset. transistor 18
2a is constrained to be turned off by the output 0 of the comparator 181a, the relay coil 34 is de-energized, and the motor 11 is stopped.

Contrary to the above, when the tilt opening/closing instruction switch 51 is temporarily closed to the down contact side, the output of the comparator 181b is inverted from O to 1 indicating tilt down, and the transistor 182b is turned on to close the down contact. , the potential is set to 0 in the same way as when the switch is turned on, and the output of the comparator 181b is held at 1. When the transistor 182b is turned on, the relay coil 33 is energized, and the motor 11 rotates in the tilt closing direction (slide opening/closing opening direction: forward rotation of the motor). At the same time, the output of the comparator 181a becomes a low level 0 through the diode 184b, the transistor 182a is turned off, and the inverting input terminal of the comparator 181a becomes a high level 1.
As a result, the output of the comparator 181a is held at a low level of 0. The output of the comparator 181b becomes a low level O through the diode 184a, the transistor 182b is turned off, and the inverting input terminal of the comparator 181b becomes a high level 1, thereby keeping the output of the comparator 181b at a low level O. When the output terminal of the comparator 181b is at high level 1 and the switch 51 is closed to the up contact side during the down operation latch, the output terminal of the comparator 181b is first pulled to the low level 0 through the diode 184a, and the transistor 182b
is turned off, and the inverting input terminal of the comparator 181b returns to high level 1, the output of the comparator 181b is held at low level 0, and the latch of the down operation is released. At the same time,
The output of the comparator 181a becomes a high level 1, the transistor 182b is turned on, the inverting input terminal of the comparator 181a is held at a low level 0, the output terminal is held at a high level 1, and the up operation latch is engaged. While the comparator 181b is outputting 1, the motor 11 is energized to rotate in the normal direction, and when the tilt-down is completed, the mode becomes mode 2, and the output C of the operation mode signal generation circuit 190 is inverted from 0 to 1. Transistor Q
c is turned on, which causes the output terminal of comparator 181b to become 0, turning off transistor 182b. Then, the inverting input terminal of the comparator 181b returns to 1, and the comparator igi
The output of b is inverted to 0 and becomes “1” which instructs tilt down.
” is released, or reset. Transistor 182b is constrained to be turned off by output 0 of comparator 181b, power supply to relay coil 33 is stopped, and motor 11 is stopped.

As mentioned above, the latch circuit 18 is used to turn on the up contact and the down contact of the tilt open/close switch 51.
0 is a self-holding (latch), and the self-holding is released (reset) on the condition that the panel 23 opens and closes in a predetermined state, so the tilt open/close switch 51
can be operated with a single touch to perform predetermined opening/closing operations. Therefore, it has good operability.

As shown in FIG. 14, the limit switches 2008 to 200c are opened and closed by the grooves 20b to 20d of the cam 20 by the rotation of the cam 20 corresponding to the open/closed state of the panel 23, and thereby the operation mode signal generation circuit 190 is activated. 1
The operating mode signals a to f shown in the table are generated, and these mode signals a to f cause the transistor Qa of the electrical circuit shown in FIG. 15b.

Qbtr Qb2+ Qb3+ Qcp Qd+ Q
e and Qf are controlled to be turned on or off. As a result, in the slide opening/closing mode 11~■, the output C2d of the circuit 190
Since both are 1, both transistors Qd and Qc of the latch circuit 180 are held on, and the transistor 182a for tilting up and tilting down.

182b are both tied off and comparator 181
a.

Since both the output ends of 181b are constrained to O (no tilt up or down instruction), even if the tilt opening/closing instruction switch 51 is operated, the panel opening/closing operation will not be performed in response to the operation. The panel 23 is driven to slide open and close only in response to the operation of the slide open/close instruction switch 50.

When the panel 23 is at the opening degree (mode ■) from the end of the tilt up to the end of the tilt down, the output a of the circuit 190 is 0 and the output b is 1, so the transistor Qa is off and the energizing path of the relay coil 33 is disconnected. In addition, since the transistor Qb2 is on and the transistor 122 is constrained to be off, the energizing path of the relay coil 34 (for urging the slide to close) is cut off, so even if the slide opening/closing instruction switch 50 is operated, the motor]1 is not energized. In other words, mode ■
In this case, the electric circuit does not respond to the operation of the switch 50.

In mode (2), the panel 23 is in a normal fully open state, and this state is the end point of the slide closing and also the end point of the tilt down. In this state, circuit 190
Since the output a is 1, the transistor Qa is turned on and the relay coil 3 is turned on through the transistor 134 in response to the operation of the slide opening/closing instruction switch 50 to the open contact.
No. 3 energizing paths are formed. In other words, the slide opening operation is possible. However, since the output is 1, transistor Q b 2 is on, which causes transistor 1
22 is turned off and the energizing path of the relay coil 34 is cut off, so the slide closing operation is impossible.

On the other hand, since the output C of the circuit 190 is 1, the transistor Qc of the latch circuit 80 is on, the output terminal of the comparator 181b is tied to 0, and the 1-transistor 182b is tied to OFF, so the tilt It does not respond to the down operation of the open/close instruction switch 51. In mode ■, only the slide open instruction and tilt up instruction are responded to. FIG. 14 shows the opening/closing instruction switch 50 in association with each mode.
51 (whether or not to respond to the operation) is shown.

Note that in the circuit shown in FIG. 15b, the 1-transistor Qe has the panel 23 connected to the deflector arms 1, 21,
2 (mode ■), the load increases, so the overload reference value is set to a large value during that time, and since the output e of the circuit 190 is 0 only during mode ■, The transistor Qe is turned off only during this period, and the reference value storage capacitor 141 is held at a high potential. 1 to transistor Qf are turned on only during mode (2), and the abnormality (overload) signal rlJ outputted by the comparator circuit 100 when overload is detected is grounded (restricted to 0). In this mode, the weather strip of the panel 23 is in contact with the metal edge of the opening edge, so there is no possibility of fingers or objects getting caught, and the load increases rapidly from this state to fully open. Since the comparator circuit 100 generates an abnormal signal (motor stop signal) "1", this is cut by the transistor Qf.

In other modes, transistor Qf is turned off,
The output of the comparator circuit 100 is not cut off. Transistor Qb
1 is turned on in modes IV and V (tilt opening/closing mode), and restricts the transistor 34 for temporarily energizing normal rotation to be turned off when an overload is detected. In other modes (slide open/close mode), transistor Qb1 is off and transistor 134 is on.

Does not affect off control. Transistor Qb2 also
It is turned on in mode IV (1 tilt opening/closing mode) and restricts the transistor 122 for slide opening/closing control to OFF. In other modes (slide open/close mode), transistor Qb2 is off, and 1
It does not affect on/off control of 2. The transistor Q b a is also turned on in modes IV and V (tilt open/close mode), and the resistor 152 a and the diode 152 b are connected to the time capacitor 151 of the time limit circuit 150 .
By interrupting the charging loop caused by

In other words, set a longer time limit. This allows the comparator 15 to pass through the diode 157 in the tilt opening/closing mode.
The output of the comparator circuit 100 is cut off for a long time due to the output 0 (0 only during the time limit) of the comparator circuit 100. In other modes (slide mode), transistor Qb3 is off and timer circuit 1
The time limit for 50 is short. When transistor Q b 3 is on (tilt open/close mode), the time limit is approximately 600I+
1SeC, but when off (slide opening/closing mode)
It is about 400m5ec at the time of .

This time corresponds to the rise time of motor startup, during which the inrush current of the motor subsides and the motor current decreases to the steady load value. Furthermore, when tilting up, the high-load operation of pushing up the weather strip continues even after the inrush current subsides, so the time limit should be set long.

During this time, the output of comparator 100 is connected to diode 157.
is cut at the output (0) of the comparator 153. Transistor Qg is turned on by the output "1" (tilt-up instruction) of comparator 181a of latch circuit 180, and operates timer circuit 150. During tilt-down, the motor stop circuit 120 and the temporary normal rotation energizing circuit 130 are not involved in tilt-down control, so the time limit circuit 150 is not energized.

In the panel opening/closing control described above, in this embodiment, the timing of starting, switching of the overload detection reference value, switching of electric circuit operation, and termination of operation according to the operation of the opening/closing instruction switch 50.51 is as follows. Mainly, the rotation of the cam 20 corresponding to the opening/closing drive of the panel 23 and the rotation of the cam 20
Limit switch 2QOa~200 by 0b~20d
It is determined based on the signals a to f generated by the operation mode signal generation circuit 190, which are based on the opening and closing of the operation mode signal generation circuit 190. The driving of the panel 23 is stopped based on overload detection when there is an abnormal overload.
Also, when the panel 23 is fully slid open or tilted up, the panel 23 is overloaded.

In this way, the mode of panel opening/closing control is determined based on the cam and limit switch, and control corresponding to the mode is performed.Although the number of modes is large at six, the number of groove formation stages on the cam is small at two. , the limit switches are also only arranged in two stages, so the cable drive mechanism (12th b)
The outer diameter dimension (height in this example) of the
It can be compactly stored directly under the car roof. One advantage is that it does not occupy a large amount of space, especially in applications where it is placed in a narrow room such as a car.

Among the elements explained above, in this embodiment, panel 2
3 is an opening covering material, and the mechanism outlined in FIG. 1 and explained with reference to FIGS. 2 to 12b is an electric drive mechanism, and a motor drive circuit 30
is an electric driver that energizes the electric motor 11 of the electric drive mechanism, an operation mode signal generation circuit 190 shown in FIG. 15a is an operation mode signal generation means, and an electric circuit shown in FIG. 15B is an opening/closing control device. The slide opening/closing instruction switch 50 and the tilt opening/closing instruction switch 51 are instruction switch devices.

Further, the resistor 40 is a load detection means for detecting the load on the drive mechanism.

In the above description, an analog circuit (FIGS. 15a and 15b) has been illustrated and its configuration and operation have been explained, but the present invention can be similarly carried out using a digital processing device such as a microcomputer.

As explained above, according to the present invention, a switch operation groove pattern with a number of steps smaller than the number of limit switches is formed on the side surface of the cam, and a plurality of switches are arranged along the side surface. The shape of the mechanism is not particularly large, and it can be easily installed in a narrow space, such as between the roof and interior of a car. Nevertheless, since the operation mode signal generating means generates mode signals of required classifications according to the opening and closing of the plurality of switches, it is possible to control the opening and closing of the panel in a relatively large number of required modes.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an outline of the opening/closing mechanism of a sunroof panel installed on the roof of an automobile. 2 and 3 are enlarged side views showing the mechanism supporting the front part of the panel 23, with FIG. 2 showing the mechanism when it is fully opened, and FIG. 3 showing it when it is slid open. FIG. 4 is an enlarged side view showing a mechanism for supporting the rear part of the panel 23. FIG. 5 corresponds to the section taken along the line IX-IX in FIG. 1, and is a sectional view showing a state in which the panel is fully opened. FIG. 6 is a sectional view taken along the line Vl--Vl in FIG. 4. FIG. 7 corresponds to the section taken along line IX--■ in FIG. 1, and is a sectional view showing a state in which the panel is slightly lowered to slide open. FIG. 8 corresponds to the section taken along the line IX--IX in FIG. 1, and is a sectional view showing a state in which the panel is slightly lowered and the style 1 is further opened. FIG. 9 is a sectional view taken along the line IX-IX in FIG. 1, showing a state in which the panel is slightly tilted up. Figure 10 corresponds to IX-I in Figure 1 (line cross section),
FIG. 3 is a cross-sectional view showing a state in which the panel is completely tilted up. Figure 11a is a perspective view schematically showing the state in which the panel is fully slid open, Figure 11b is a schematic side view showing the state of the deflector arm when the panel is fully opened, and Figure 11c is a schematic diagram showing the state in which the panel starts to ride on the deflector arm. Side view, 11th. Figure d is a schematic side view when the panel is fully slid open. FIG. 12a is an enlarged plan view of the cable drive mechanism;
Some parts are shown broken. Figure 12b is XII of Figure 12a
A sectional view taken along the line B-XIIB, and FIG. 12c is an exploded perspective view of the rotating shaft 15 shown in FIG. 1.2b. FIG. 13a is a plan view showing the top surface of the cam 20 shown in FIGS. 1.2a and 12b, and FIG. 13b is a plan view showing the bottom surface. FIG. 14 shows the rotation of the cam as the panel 23 opens and closes,
It is a time chart showing the opening/closing of the limit switches 200a to 200c and the relationship with the opening/closing control operation mode. FIG. 15a is a circuit diagram showing the configuration of an operation mode signal generation circuit 190 that generates operation mode signals a to f in response to opening and closing of limit switches 200a to 200c, and FIG. Instruction switch 5
FIG. 2 is a circuit diagram showing an electric circuit that energizes a panel opening/closing drive motor in response to an operation of 0.51. Fig. 16a is a graph showing the relationship between the load detection value and the reference value in conventional overload detection protection, and Fig. 16b is the graph showing the relationship between the load detection value and the reference value in conventional overload detection protection.
It is a graph which shows the relationship between the load detection value by the electric circuit shown in a figure, and a reference value. 1 9: Reducer 10,142-145: Gear 1
1: Motor 121.122: Deflector arm 1
3: Deflector 14: Worm 15.17,1
8: Rotating shaft 19: Eccentric bearing 20: Cam
20a: Hole 20b-20d: Groove 2
1: Roof 22: Opening 23 Ni-Ride Panel 24. 25: Drive Cable 26: Bracket 1
~28: Front guide 29: Freon 1 ~ Shoe 3
6: Guide slot 39 Guide link 41: Riashu-43 Guide pin 44 Guide rail 45 Ni block 47: Inclined groove 52: Stopper piece 201: Planetary gear
21o: Casing internal tooth 202: Pin 200
a~200c: Limit Switch Rigen @IFIIJ (
Kakemachi i 31.32: Relay contact piece 33, 34: Relay coil 40: Resistor (load detection means) 60: Filter circuit 70: Amplification circuit 80: Addition circuit 90: Delay detection level check circuit 100: Comparison circuit 110: Delay circuit 120: Motor stop circuit 130 Temporary forward rotation energizing circuit 140: Memory circuit 150: Time limit circuit 160s: Constant voltage circuit
160: Motion detection circuit 170 Detection circuit to Nijiyo 1 Patent applicant: Aisin Seiki Co., Ltd.

Claims (9)

[Claims] (1) An electric drive mechanism that includes an electric motor and an opening/closing mechanism that opens and closes the opening cover according to the forward and reverse rotation of the electric motor; Switch operation grooves are formed on the side surface in stages of n-1 or less, and the opening/closing mechanism A connected cam member. a plurality of n switches that face the side surface of the cam member and are opened and closed by the cam member; an operation mode signal generating means that generates an operation mode signal for opening and closing the opening covering material in response to opening and closing of the plurality of n switches; ; an electric driver that energizes the electric motor; an opening/closing instruction switch device that is manually operated and instructing opening and closing of the opening/closing material; An automatic opening/closing device for opening covering materials equipped with a vA opening/closing control device that instructs normal rotation, reverse rotation, and stop. (2) The electric drive mechanism includes an electric motor (11) and an opening/closing mechanism that tilts and slides the opening cover according to forward and reverse rotation of the electric motor. automatic opening/closing device for opening covering materials. (3) The instruction switch device includes a tilt open/close instruction switch (51) that changes the switch state to a tilt open/close drive instruction state only while being manually operated;
Claim (2) includes a slide open/close instruction switch (50) that changes the switch state to a slide open/close drive instruction state only while being manually operated.
Automatic opening/closing device for opening covering material as described in Section 1. (4) The opening/closing control device includes a load detection means (40) that detects the load of the electric drive mechanism, and a reference value setting means (80, 90J40, 150) that sets an overload reference value according to the detected load.
), and compare the set overload reference value and the load detection value,
When the load detection value exceeds the set overload reference value, the motor energization is stopped! An automatic opening/closing device for an opening covering material according to claim (1), comprising means (100, 120). (5) The opening/closing control device includes a delay means (110) that applies a delay to the load detection value when the load of the electric drive mechanism rises, and does not apply a delay when the load falls, and includes a reference value setting means (80,
90, 140, 150) is an automatic opening/closing device for an opening covering material according to claim (4), which is configured to set an overload reference value according to the processed value of the delay means (110). . (6) The reference value setting means includes a storage means (140), a storage control means (150) for storing the load detection value in the storage means after a predetermined time from the start of driving the electric motor, and a comparison means (90), The automatic opening/closing device for an opening covering material according to claim (4), wherein the smaller of the stored value of the storage means (140) and the processed value of the delay means (110) is set as the overload reference value. . (7) The protection means (100, 1, 20) includes a first switching element (1) that energizes the electric driver in a conductive state.
22), and a second switching element (121) that interrupts conduction of the first switching element (122) when the detected load value exceeds the set overload reference value, 140, 150) starts a timed operation for a first time and a longer time from the start of motor drive in parallel, and during the timed operation for the first time, the second switching element (121) timer means (122) for generating a cutoff signal for disabling conduction of the first switching element (122), and for generating a motor stop instruction signal when the cutoff signal is present after completing a second time period; 150) The automatic opening/closing device for an opening covering material according to claim (4). (8) The protection means (100, 120) includes a first switching element (12) that energizes the electric driver in a conductive state.
2). a second switching element (121) that interrupts conduction of the first switching element (122) when the load detection value exceeds a set overload reference value; and a second switching element (121) that interrupts conduction of the first switching element (122). 3 switching elements (
123), reference value setting means (80, 90, 140
゜ ] 50) starts a timed operation for a first time from the start of motor drive, and switches the first switching element (121) to a second switching element (121) during the timed operation for the first time.
22), the switching control device further includes a time limiter 050) for generating a cutoff signal that disables the interruption of conduction of the switch 050), and the switching control device further includes a timer means 050) for generating a cutoff signal that disables the cutoff of the conduction of the switch 050). an operation detection means (160) for energizing the third switching element (123) to a state in which the first switching element (122) is cut off if the detected load value does not exceed a set overload reference value within a period of time; An automatic opening/closing device for an opening covering material according to claim (4). (9) The cam member is circular and has two grooves formed on its side circumferential surface, upper and lower, and is pivotally connected to the rotating shaft of the reducer driven by a motor, and has three switches. and
The automatic opening/closing device for an opening covering material according to claim 1, wherein one of them faces the groove of one of the upper and lower stages, and two of them face the groove of the other stage.