JPS6351585A - Door opening and closing control apparatus - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a door opening/closing mechanism in which doors such as automobile windows are opened and closed by motor 1, and a door opening/closing 1al control that controls 2. This relates to the device f.

[Conventional technology]

As a conventional S opening/closing control device of this kind, for example,
There is a power window device for automobiles disclosed in Japanese Patent No. 0-123690. Hereinafter, the devices for this type of four-door car will be explained based on FIG. 4. The figure (C1) is the panteri switch, and (2) is the @source switch.

(3) to (6) are a window glass opening/closing mechanism (not shown) that raises (closes the breath) and lowers (opens the window) the window glass (not shown) of the door (not shown), respectively. This is a motor that serves as the drive source for this, and is used to raise and lower the window glass of the driver's side door, passenger's side door, rear right door, and rear left door in order, and is installed on each door. There is. (7) is for each of the above motors (3) to (6).
) is installed on the driver's side door and is mainly operated by the driver. The main controllers (8) to αυ and safety switches (6) each drive
It consists of

(to) to (4) are the above motors (4) to (6), respectively.
These are the auxiliary controls that drive the vehicle, and are installed on the passenger side door, the rear right door support, and the rear left door respectively. These sub-operators (to) to 11Q and the main controllers (8) to 01
) have the same structure, for example, the main controller (
10a) jc To explain in more detail, this device consists of movable sections (10a) and (10b) that are moved by an operating member (not shown) such as a lever (not shown), and a contact point (Io).
c) to (10f), and when the operating member is in the neutral position, the movable segments (loa) and (10b) are connected to the contacts (10c) and (10e), respectively, as shown.
This connection causes the operating member to move to the first position (when set) for raising the window glass.

Similarly, when the contacts (10d) and (10eH) are connected, and the operating member is set to the 2nd position to lower the window glass, the operating member is similarly connected to the contacts (10c) and (10f), and the operating member is set to lower the window glass @2 position. When no operating force is applied, the main operating device c self-returns to the neutral position.

, the contacts (10d) and (10f) are each connected to the battery via the power switch (2), and the contacts (10c) and (toe) are each grounded. Contacts (14d) and (14f) of sub-operator α
are safety switch 0 (2) and power switch (
2) to the panteri (1), and the contact (14c
) and (14e) are the movable segments (
loa) and (10b), the movable sections (14a) and (14b) are connected to the motor C3, respectively.
) (This is connected.

In addition, the main controller (9), the sub-controller @ and the motor 14).

The arrangement of the main controller C1, ), the sub-controller (g) and the motor (6) are also connected in the same manner as described above. In addition, the main controller (8) has movable segments (8a) and (8b) connected to the motor (3), and the main controller 0Q
It is decorated with the same citrus greenery.

The operation of this conventional device will now be explained.

First, as shown in Figure 1, when both the power switch (2) and the safety switch @ are on, 1 For example, to raise the window glass of the rear right door, the driver presses the operating member of the OQ Set to position. As a result, the movable segment (tOa) of the main operating device 0Q is connected to the contact point (10d), a current flows through the motor (5) 1, the motor rotates in the normal direction, and the window glass rises. During the operation, when the driver releases his or her operating hand, the operating member returns to its original position and the motor (5) stops. Lowering the window glass (by setting the operating member to the second position), the movable section (1ob) is connected to the contact point (10f), the motor (5) is operated, and the window glass is lowered. In addition, even if you are not the driver, the passenger in the rear right seat
Setting the operating member of the sub-operator α to the first position or the second position) Therefore, as in the above, the motor (5) rotates forward and reverse, and the window glass moves up and down. The operation of the window glass of other doors is the same as above, so the explanation will be omitted.

Next, we will explain the case where the safety switch J'4 is off, using the 3rd glass window f on the rear right door, as described above.

In this case, the driver (main operator αq) can operate the sudden glass in the same way as above, but the passenger in the rear right seat can operate the contact points (1, 4d) of the sub-operator Ii< and ( 14f) Since the voltage from the battery (1) is not applied, it is not possible to operate the glass even if you operate the operating device α.The same applies to the operation of the glass on the pond door.

Therefore, by turning off the driver's safety switch, it is possible to prohibit the passenger from operating the glass by operating the sub-windows. For example, This can prevent mischievous operations by children, etc.

[Problems to be solved by the invention] The above-mentioned conventional device (the small C1 safety swing (6) is installed on the central operation panel (7) separately from the main controllers (8) to Ql).
This must be installed, and the driver must also use a safety switch @
The problem was that it was easy to forget to operate the .

This invention was developed in order to solve the above-mentioned problems, and does not require a dedicated safety switch; it can prohibit the operation of the sub-operator, and moreover, the door prevents the user from forgetting to operate the safety switch. The purpose is to obtain an opening/closing control device.

[Means for solving problems]

The fiI opening/closing control device according to the present invention operates when the motor is in an overload state (i.e., the motor is driven by the main controller in response to the output of an overload detection circuit that detects the overload state).
It is equipped with a cutoff circuit that maintains the cutoff state of the IJ control and releases the cutoff state by operating the main controller, and when the cutoff circuit is in the cutoff state, motor drive control by the tree handler is prohibited. It is a strained product.

[Effect]

In this invention, when the motor becomes overloaded, the cutoff circuit maintains the motor drive control by the main controller I in a disconnected state and prohibits the motor drive control by the sub-controller.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 and 2. As shown in Figure 1 and Figure 2 of this man, the main controller αq and secondary controller α4 that control the motor (5) that operates the window glass of the rear right door are shown in Figure 4. It corresponds to the part consisting of the safety switch (6), and in Figure 1, the same reference numerals as in Figure @4 indicate the same or equivalent parts. first.

In Fig. 1, α0 receives the forward rotation signal and reverse rotation signal, which are the drive signals for driving the motor (5), as well as the stop signal that stops the drive, and based on these signals, the motor (5) is passed through. A motor drive circuit that controls the formation flow 1, thereby causing forward rotation, reverse rotation, and stopping, respectively, Q7)
represents the overload condition of the motor (5).

The overload detection circuit +181, which detects based on the energized current and outputs an overload signal, is a main operating device corresponding to αQ in FIG. Even after a signal and a stop signal are output and the operating force applied to the operating member is removed, any of the above-mentioned signals that have been output up to that time are retained. (
19 is a sub-operator corresponding to α fathom in Figure @4, which outputs the above stop signal while the operating member is not receiving operating force, and (
9! ! The normal rotation signal or the reverse rotation signal is output only while the operating member is receiving the operating force. (2) receives the signal from the overload detection circuit Q, the main controller port and the secondary controller (19), receives and holds the overload signal, and releases the main controller -51181. A signal holding circuit (2) that releases this held output receives outputs from the head of this signal holding circuit, the main controller side, and the sub-controller I19, and when there is no output from the signal holding circuit, is the signal from the main controller port or al controller α9,
If there is an output, a judgment circuit that applies the stop signal to the motor drive circuit αO, the motor drive circuit α, the signal holding circuit ■, and ζ.
When the motor (5) is in an overload state, the output of the overload detection circuit (17) is received to maintain the on/off state of the motor drive control by the main operating port, and the sub operating device α9 This constitutes a cutoff circuit that prohibits drive control of the motor (5) by the motor (5).

Next, regarding the details of each part of Fig. 1 explained above,
@Figure 2 (Explaining based on this, the motor drive circuit q6 is
Relays (+6a) and (16b) each having a coil (16al) and (16b,) and a relay section (16a2) and (16b2), and the above-mentioned coil (16a1)
diodes (+6a) and (16d) for absorbing the surge generated in the circuits (16b, 16b) and (16d), and transistors (16e) and (16e) for controlling the current flow of the coils (isa) and (16b). 16f) and
Resistors (16g) and (<16f) connected to each pace of these transistors (16e) and
16h). This motor movement circuit a
6, a transistor (16e
) and (16f) are given a forward rotation signal that turns on and off, respectively, a reverse signal that turns off and on, respectively, and a stop signal that turns both off, and the relays (tcsa) and (16b) respond accordingly. ) responds. V - Each relay part (16a) and (16d)
68g) and (t6b2).

The state shown in 1, in which no current flows through the coils (1681) and (16b,), indicates the original position, and during operation when current i is flowing, the movable segments (16all) and (tab,) are at the contact point (1681) and (tab,), respectively. 16a 4 ) and (16b4) 7 Therefore, if the normal transmission signal is given to the motor drive circuit m+.

The relay (+6a) operates, and current flows through the battery C1), the source switch (2), the relay section (16a2), the motor (5), and the relay section (16b2), and the current flows through the C motor (5).
rotates in the normal direction, and if a reverse signal is given in the opposite direction (in this case, the relay (L6b) operates and the battery 111,
Power switch (2), relay section (16b).

If current flows in the order of motor C5) and relay part (+6a), the motor (5) reverses, and a stop signal is not given (
Here, relay (L6a) and (1fifi) are both (
This is the original position (this means that the motor (5) is stopped). x7b), a register (17c) that provides a reference voltage to the inverting input terminal of the comparator (17m), and (17
d''), the current flowing through the motor (5) I, and the voltage;
It is composed of a resistor (17f,) and a capacitor (17f2) forming a filter (17f) that removes noise components included in the four kings I and whose output is given to the non-inverting input terminal of the comparator (L7a). ing. In this overload detection circuit aV, the value of the reference voltage is determined by the filter (1) corresponding to the current flowing when the motor (5) rotates.
The current i that flows when the motor (5) is overloaded is higher than the maximum output value of the filter (17f).
Therefore, when the motor (5) is overloaded +1f, the comparator (17a
) sets the output to IHl level. Main controller (
) is the grounded oT0I operated by the operating member.
] Intersection (18a), contact point (18b) and (18(
This operating member can be held in each of a first position, a second position, and a neutral position, and when the operating member is held in the first or second position,
When the movable segment (18aH'!) is connected to the contact (18b) or (18c) and outputs a forward rotation signal or reverse rotation signal, respectively, and is held at the neutral position, the movable segment (18a) is at the center position shown in the figure. The sub-operator 09 is of a self-resetting type, similar to the sub-operator 0.Il shown in FIG.

The grounded movable section (19
a) and the contacts (18b) and (18c) of the main controller o3
and γ contacts (t9b) and (19c) connected to each other, respectively, and this operating member is
When set to the first or second position by receiving an operating force, the movable segment (19a) is connected to the contact (19b) or (t9c), respectively, and a forward rotation signal or a reverse rotation signal is output, respectively. When not receiving any operating force, it will self-return to the neutral position.

The movable section (t9a) is held at the central position shown in the figure.The signal holding circuit (■) has inputs that are operated by the respective controllers!
The battery (1 ), the output of the power switch (2) is applied to the cent terminal S via the output from the comparator (17a) and the capacitor e20d), and the AND circuit (20c) is connected to the reset terminal R. Circuit (20
c) R-S with an output terminal Q;
It consists of a flip-flop (20e). In this signal holding circuit ωI, the main and sub-operation can openings and the movable segments (tSa) and (19a) of (19) are located at the center positions shown, respectively, and a -IN stop signal is output. When the inputs of the AND circuit (20c) are both at the IHL level, the flip-flop (20e) is activated, and the flip-flop (20e) outputs the ILI novel.
is the contact point (18b) or (18c), or
When the movable section (19a) of the sub-operator αg is connected to the contacts (19b) and (19c) and a forward rotation signal or reverse rotation signal is output, the manual power of one side of the AND circuit (20c) is "L". In this case, the flip-prop (20e) is connected to the flip-prop (20e
) receives the 'H level from the ratio 'WZ W (t7a), that is, the overload signal, and outputs the IH1 level, and the output of the comparator (17a) becomes the 'L level 1'.
Even with this change, the flip flop (Sl!Oe)
This overload signal can be held and output. This retained overload signal is generated by the movable section of the main and sub-operation can opening, 09
18a) and (i9a) are both set to the central position, and the flip-flop (20e) is reset (thereby stopping the output).

Similarly to the above, the movable section (l contact) of the main operating device opening is the contact point (18b) or (18c), or the movable section (19a) of the sub-operating can opening 9 is the contact point (19b) or (18c).
19c), press the power switch (2)
Through the capacitor (20d)'g,
Flip flop (20e) is set.

The judgment circuit Q'lJ receives each output from each contact (18fi), (19b) of the main and sub-operator (181, [g) and the output terminal Q of the 7-ring frump (20c), ) NOR circuit (2
1a), and each contact point of the king and sub-controller (181, f19)
18c), (19c) and flip-prop (20e
) receives each output from the output terminal Q of the transistor (
16f) A NOR circuit (21b) that gives this output.7 In this judgment circuit f211f, when the flip-flop (20e) is outputting the IL level, the main or sub-operator mark is , when α9 is small (tomo-man) is outputting a normal rotation signal, the NOR circuit (2ta)
The outputs of (21b) and (21b) respectively provide a normal rotation signal to the motor drive circuit aQI with the lHl and ILI level toners,
When at least one of the king or sub-operator ω and Q9 outputs a reverse rotation signal, the NOR circuit (21a) & (2)
The outputs of 1b) become IL' and 'H levels, respectively, and provide a reversal signal to the motor drive circuit (let) to the main and sub-operator sections.

When Og is outputting a stop signal, the NOR circuit (
The respective outputs of 21a) and (21b) are both at the ILI level and give a stop signal to the motor drive circuit αfH, and when the flip-flop (20e) is outputting the IHI level (overload signal), the and sub-operator rn,
Regardless of the output from ng, the NOR circuit (2La) and (
Each output of 21b) becomes a+IL level, and a stop signal is always given to the motor drive circuit αQ.

Next, the operation of the embodiment configured as described above will be explained. First, let me explain the operation when the power switch (2) is switched from off to on, that is, when the power is turned on. The voltage (IHI level) of J (1) is applied to the flip-flop (
20e) is applied to the set terminal Sf. At this time, if both the main and sub-controllers 081 and 1G are outputting a stop signal, the flip-flop (20e) is connected to each terminal S.
Since and R inputs the 'Hl level to I, the output is undefined, but a stop signal is output to the soldier from the king and sub-operators oa and [1g, so a stop signal is always output from the judgment circuit 1. Since the signal is applied to the motor drive circuit αG, the motor (5) is stopped.

Moreover, the operating members of the king and sub-operating can openings, aq, are held in the first or second position, and the movable section (18a) or (19)
a) is the contact point (18b) or (19b) or (18
c), and a forward rotation signal or reverse rotation signal is output.

The flip-flop (20e) is -1! Since the output car is set to the 'PH' level (overload signal), the output from the judgment circuit ■ is It becomes a stop signal,
Therefore, in this case as well, motor i5) is stopped. Therefore, when the power is turned on, the motor (5) is always stopped, regardless of the set positions of the main and sub-operator sections and the operating members of Ω9.Next, the operation after the power is turned on will be explained. First, when the main and sub-operating can openings and the operating members 09 are both at the neutral position, that is, when the movable sections (18a) and (t9a) are both at the central position R# in the figure, the main and sub-operating canisters (181, 19
Based on the stop signal from The operating member is operated and held at #1 fit,
When the movable intercept (18a) is connected to the contact (18b), the output of the flip-flop (20e) maintains the 'L# level, so the judgment circuit 1 receives the normal rotation signal from the main controller port. In response, the motor drive circuit a. gives a normal rotation signal. Therefore, the relay (16a) operates, and -T:
The blade (5) rotates forward, the window glass rises, and the window closes. While this motor 15) is rotating, if the operating member at the main operating port is operated and returned to the neutral position, the motor (5) will immediately stop (manual operation), but if it is not operated, the driver will operate it. Even if you release your hand from the member, the operating member continues to be held in the first position, so the motor (5) continues to rotate until the window glass rises to the top and the window is fully closed (automatic operation). When the motor (5) is fully closed,
becomes unable to rotate, becomes overloaded, and an overload current flows, but the voltage generated in the resistor (t7e) due to this current is passed through the filter (17f) to the comparator (17a).
The comparator (17a) outputs an IH level signal (overload signal), and the flip-flop (20e) outputs an IHI level signal (overload signal) and holds this overload signal. Therefore, the 2nd rIfr circuit outputs a stop signal, the relay (16a) returns, and the current flowing to the motor (5) is cut off. Therefore, in the above operation 3, the main controller ■ Operating member is in neutral position ρ)
When switched from to @L position, the operating member returns to the first position (
This is kept n61.

Even if the driver lets go of the operating member, the window glass continues to move up by 1 step, and when the window is fully closed, the flow automatically closes the motor (5). is being carried out. After this automatic operation is completed, the operating member remains in the 1st position, so even if you try to raise the window glass again, the operating member will not be able to operate if it is set at the 1st position. However, on -1st, return the operating member to the neutral position and press the 7-ring fronop (20e).
f - After resetting.

When an operation such as setting the first position 1 is performed again, the 1 judgment circuit outputs a normal rotation signal and the relay (16a
) operates, and an overload current momentarily flows through motor (5). However, the overload detection circuit α'7) operates and outputs the overload signal, and the flip-flop (2+) e) is activated, so that the signal holding circuit J holds the overload signal. Since it is fed to the judgment circuit I211, the motor (5
) is cut off from the current. Therefore, after the window is fully closed, even if the main controller ω is operated as described above, the motor (
5) (In this case, only the instantaneous overload current flows, and no more than that.)

Also, what happens when the operating member of the main controller μs is switched from the neutral position (force) to the second position?

A reverse rotation signal is output from the main operating device port, a reverse rotation signal is given to the motor drive circuit O0 from the judgment circuit port, and the relay (16
b) is activated, the motor (5) rotates three times in the reverse direction, and the window glass is lowered (the window opens).The detailed operation of each part is the same as that described above.

Explanation will be omitted.

In addition, when the operating member of the main operating device mouth is held in the first position and the breath is fully opened, when the operating member is switched to the second position to open the chopsticks, the operating member passes through the neutral position. Because of the structure, the flip-frog (20e) is always reset (when switching), and the judgment circuit port can output a reverse rotation signal when the operating member is switched to the second position. The same applies to the case where is switched from the @2 position to the @1 position.
Above, we have explained the case where the driving sound is caused by operating the main controller [181], but next we will explain the case where the passenger operates the A74 operating device A9.

When the operating member of the main operating port is in the neutral position (as long as the operating member of the main operating port is in the neutral position, the sub-operator a) will be able to open and close the window glass. In some cases, each movable segment (
18a) and (19a), each contact (18b) and (1
8c) and I (19b) and (190) are connected in parallel, so in the operation explanation of the main controller port above, the operation when the main controller port and the sub-controller V are replaced is the same. Similarly, the first position, second position, and neutral position of the operating member of the sub-operator a1 (corresponding to this, the motor (
5) rotates forward, reverses, and stops, and the window glass rises, descends, and stops. However, unlike the main controller G, the sub-operator 09 is a self-returning type, so the above-mentioned eye movement cannot be performed and only one manual operation is required.

Next) To explain the case where the operating member of the C1 king operation mark is held in the first or second position (this) and the window is fully closed or fully opened after the automatic operation is performed, in this case (this is The head of the signal holding circuit holds the overload signal, and the first judgment circuit 21 continues to output a stop signal.

The gT motion section 18a) of the operating section is the contact point (zsb)
(IRc), and the AND circuit (20c) always has the lLl level input to one side. Therefore, passengers (thus).

Even if the sub-operator Og is operated and the movable intercept (19a) contacts the contact (19b) or (19c), the AND circuit (20c) does not output 'Fl/V per-W, and the flip-frog (20e) The signal holding circuit still outputs an overload signal and crashes. Therefore, since the 2 judgment circuit 213 continues to output the stop signal, the motor (5
) does not work.

As described above, in this embodiment, the driver performs an automatic operation to fully close or fully open the window by using the main controller command. 1
or @2nd place n), it is possible to prohibit the passenger from operating the window glass using the secondary operation device (19).Therefore, this was necessary in the conventional device shown in Figure WS4. Even without providing a special safety switch (6), this safety switch@I function can be achieved.

After the window is fully closed or fully opened by the automatic operation described above, the auxiliary operator can prohibit the operation of the window glass without any special operation, so the driver will not forget to operate it. .

In addition, when the overload signal from the overload detection circuit Q is input, the signal holding circuit (■) holds this signal and continues to output it to the judgment circuit.
The above-mentioned overload signal is held until a release operation is performed in which the output from the forward rotation signal or reverse rotation signal is switched to a stop signal, and the first judgment circuit c211 outputs a stop signal, so that the window is fully closed. Or after full opening, the king or sub-operation 64,0
Even if 9 is accidentally operated in the direction of closing or opening the window, the overload 1 will flow through the motor (5) for only a moment.

The motor (5) is less susceptible to deterioration such as coil burnout due to overload current.

Also, when the power is turned on, the flip-flop (20e) is set through the capacitor (20d) 8 and outputs the IHI level, so the signal holding circuit is designed to output an overload signal, so 1! Before power is turned on, the main controller or sub-operator U, α9 is activated, regardless of the user's will.

I! If the motor is set to the first or second position, turning on the power switch (b) will prevent the motor (51) from operating, and the user will be able to
The guard window will not open or close even if there is no intention to operate it, resulting in a high level of safety.

Next, another embodiment of the present invention will be explained based on FIG. In this embodiment, the signal holding circuit is replaced with a comparator (17a) which also serves as the overload detection circuit αη, in contrast to the above embodiment.
The resistor (2Of) and diode (20g) connected in series between the outputs of this comparator (17A), the six main and sub-operation ports, and the signal from α9 are connected to the inverting input terminal ζ of the comparator (17a). Diode for giving (20h)
and (201), the capacitor (20j) and the register (20k), and the comparator (17a)
A capacitor (2cM3) for supplying to the non-inverting input terminal of
) and register (20m) (therefore, barrel formation 1 judgment circuit 21) are turned on/off by the output of the signal holding circuit ω.
The off-operating transistors (2La) and (21d) and the resistors (21a) and (21f) are thus constructed, and the main and sub-operations 6, α9 movable intercept (18a)
) and (19a) are given the voltage from the patch 1), and this voltage is applied to the motor drive circuit QQI via the contact (18b'') or (18c) or (19b) or (19c). This is what I did.

In this embodiment, the comparator (17a) is the same as described above, and the output is connected to the register (2Of) and the diode (20
g) Positive feedback is provided to the non-inverting input terminal via f, so when the output of the comparator (x7a) becomes -HIHl level, that is, an overload signal, the output from the inverting input terminal 1 or the sub-operation 6 stops, α9 This overload signal will be held until a signal of .

This overload signal is a transistor with a size @ circuit of 2°C (210
) and (2td), and these transistors (21c) and (21d) turn on, so
Even if the main or sub-operation 6 ports [19] are outputting a forward or reverse rotation signal, the output of the judgment circuit e2147)z etc. will be a stop signal.

In addition, in this signal holding circuit (■), the held overload signal is generated as described above (when the operated operating port or the operating member of α9 is switched from the neutral position α to the 1!1 or 2nd position). (However, the operating member of the other operating device is in the neutral position a), the panteri voltage is applied to the diode (20h) or (201) from the contact (18b) or (18c) or (19b) or (19c). and capacitor (
20j) to the inverting input terminal of the comparator (17a). Well, when the power is turned on.

The panteri voltage is applied to the non-inverting input terminal of the comparator (17a) via the capacitor C213e (thus, the comparator (17a) outputs and holds the overload signal.

Therefore, as described above, the signal holding circuit ω of this embodiment
The operation of the judgment circuit 211 is similar to that of the above-mentioned embodiment, and the operation and effect of this embodiment as a whole can be expected to be similar to that of the above-mentioned embodiment.

Although each of the above-mentioned embodiments concerns the window glass of the rear right door, the same structure can be applied to opening and closing the windows of other doors other than the driver's seat side door. Talented.

In addition to door window crows, it can also be applied to other window opening/closing devices such as sunroofs. I'm not good at saying things that can be applied.

〔Effect of the invention〕

As described above, when the motor is overloaded, the cutoff circuit maintains the cutoff state of the motor drive control by the main controller and prohibits the motor drive control by the auxiliary controller. As a result, there is no need to provide a dedicated safety switch], and since the function of such a safety switch can be achieved automatically by operating the main controller, it is possible to prevent forgetting to operate it. This has the effect that motor drive control by the sub-operator can be prohibited.

[Brief explanation of drawings]

Figures 1 and 2 show an embodiment of this invention;
1 is a schematic configuration diagram, FIG. 2 is a circuit diagram, FIG. 3 is a circuit diagram showing another embodiment of the present invention, and FIG. 4 is a circuit diagram showing a conventional door opening/closing control device. , (5) is the motor, α0 is the motor drive circuit,
αη is an overload detection circuit, the decoy is a main controller, [19 is a sub-controller, ■ is a signal holding circuit, 0 is a judgment circuit, and is a cutoff circuit. Note that the same group numbers in each figure indicate the same or equivalent parts.

Claims (1)

[Claims] A main controller that drives the motor that opens and closes the door, an overload detection circuit that detects the overload state of the motor, and when the motor is overloaded, the motor is driven by the main controller in response to the output of the overload detection circuit. A cut-off circuit that maintains a control cut-off state and releases the cut-off state by a release operation of the main controller; When the motor drive control by the operating device is in the cutoff state by the cutoff circuit,
The door opening/closing control device has been made prohibited.