JP2823538B2 - Window opener - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] The present invention relates to a window glass opening and closing device.
In particular, it relates to an automatic window glass elevating device for automobiles.
You. [0002] 2. Description of the Related Art In recent years, the window glass of automobiles has not been manually operated.
2. Description of the Related Art Window glass lifting devices that can be opened and closed have become widespread. this
In general, window glass lifting devices use a motor that rotates in the forward and reverse directions.
Operated by an operation switch to raise and lower the window glass
It is. And while turning on the manual operation switch,
The pane continues to rise or fall. Because of this,
Between the windowpane and the window frame during the climb
When an object such as a hand or head is inserted, this object
There is a problem that it is sandwiched between the window and the window frame. This
Therefore, various methods for solving this problem have been studied.
You. [0003] For example, Japanese Patent Application Laid-Open No. 60-185626
Attach an optical fiber along the window frame
To detect abnormalities such as pinching of objects by detecting refraction
Is disclosed. Also, Japanese Unexamined Patent Publication No. 60-185625
The report includes a motor for raising and lowering the window glass in normal conditions.
Is stored in advance, and this is stored in the reference data.
As compared with the data during actual operation,
And the like are disclosed. In addition,
No. 61-52172 discloses that the rotation of a DC motor is controlled by a pulse.
Window glass stopped during the ascent
That the motor is reversed
Is shown. [0004] SUMMARY OF THE INVENTION However, Japanese Patent Application Laid-Open
No. 60-185626 discloses an expensive optical fiber.
Fiber must be assembled to the window frame, increasing the number of work steps
And special detection devices must be provided. Also general
When attaching a sensor for pinch detection to
Mounting problems, restrictions on the production of doors, including window frames and window glass
Or the significant cost increase or reliability
At present, it is difficult to put it into practical use due to the problem. On the other hand, Japanese Patent Application Laid-Open No. 60-185625 discloses
The description is for sliding the window frame and window glass attached to the actual vehicle.
Eliminates the effects of motor load variations, including dynamic resistance
Up the window glass to store the reference data.
It is necessary to operate the storage switch when
You. The windowpane has reached the fully open or fully closed position
Must be provided with a limit switch to detect
It is necessary. And the reference data is the data of normal operation
No consideration is given to what it is. [0006] Japanese Patent Application Laid-Open No. Sho 61-52172 discloses
It is only after detecting that the rising of the window glass has stopped.
The response is slow.
You. The present invention overcomes the disadvantages of the prior art.
Motor stopped due to pinching
Inverting the motor before
Prevents object pinching accidents by eliminating the need for additional sensors
To provide a window glass opening and closing device that can be shut off.
Aim. [0008] Means for Solving the Problems According to claim 1 of the present invention.
In the case of a window opening and closing device,
An operation switch that generates a request signal and a forward drive signal
The window glass is raised while the reverse drive signal is
Motor that lowers the
And electrically connected to the motor,
A drive circuit that supplies a forward drive signal or a reverse drive signal
And generates a motor pulse signal corresponding to the number of rotations of the motor.
Pulse generator circuit and an operation switch electrically connected to the power supply.
Switch the up request signal and down request signal generated by the switch
A converter for converting the motor into a forward drive signal and a reverse drive signal.
A window glass opening / closing device with a controller,
The motor pulse signal generated by the pulse generation circuit
Count the number, when the windowpane rises, the windowpane
Cow counting up and counting when lath descends
The window glass is in the fully closed position according to the counter value and the counter value.
A windowpane position determiner for determining whether or not the position is within a range;
Based on the motor pulse signal generated by the pulse generation circuit,
The speed calculator that determines the rotation speed of the motor and the speed calculator
Based on the obtained speed data,
At least one of the measured speed change rate and speed change rate
A speed change calculator for calculating one of them, and a pulse generation circuit
Window glass is closed by the motor pulse signal
A window glass operation detector that determines whether the window
The lath motion classifier determines that the window glass is closing,
And the windowpane position detector detects that the windowpane is out of the fully closed position range.
When it is determined that there is, the calculation data of the speed change calculator is
When the value is equal to or greater than a predetermined first set value, the driving circuit
Reverse drive signal to open the window glass
Signal generator and window glass operation discriminator
It is determined that the window glass is in the closing operation, and the position of the window glass is determined.
When the discriminator determines that the window glass is within the fully closed position range
In this case, the calculated data of the speed change calculator is greater than the first set value.
Is greater than or equal to the second set value, which is larger than the drive circuit.
To the window drive to stop the window glass.
And a stop command generator for stopping supply.
It is characterized by that. [0009] According to the present invention constructed as described above, the window
When the glass is moving to the closing side, the window glass motion discriminator
The window glass is determined to be in the closing operation by the
The window glass is out of the fully closed position range by the glass position detector
If it is determined that there is, the calculation data of the speed change calculator is
If it is equal to or greater than a predetermined first set value, a reverse rotation command generator
Reverse drive to open window glass by drive circuit
Move window glass to close side to supply signal to motor
Before the motor stopped, open the window glass
Reverse movement to avoid pinching. And the window glass
When moving to the closing side, the window glass motion discriminator
It is determined that the windowpane is in the closing operation and the windowpane
The position detector determines that the window glass is within the fully closed position range.
In this case, the data calculated by the speed change calculator is
Stop command generator if the second set value is greater than
Stops the window glass from the drive circuit.
The supply of the signal is stopped, and the window glass stops at the fully closed position. Yo
Therefore, when an object is sandwiched between the window frame and the window glass,
Without installing special sensor and motor rotation
Detects pinching before the motor stops and reverses the motor
In order to lower the window glass, damage to the object
Less damage is required. [0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the window glass opening / closing device according to the present invention.
Examples will be described in detail with reference to the accompanying drawings. FIG. 3 shows a window glass opening / closing device according to the present invention.
It is a block diagram showing an example. In FIG. 3, a motor 10 is rotatable forward and reverse.
Function motor, and each of the doors 12 of the car
It is provided correspondingly. And the motor 10
The window glass 16 mounted in the interior 14 is moved up and down. this
The motor 10 is connected to a power supply (battery) via a drive circuit 18.
Connected to B. The driving circuit 18 and the pulse generating circuit 20
Connected to the central processing unit (CPU) 24 of the controller 22.
Continued. The controller 22 operates a constant voltage circuit (not shown).
Connected to the power supply B via the
A connected counter 26 is provided. And CPU2
4 is an operation switch panel 28 operated by a passenger.
The rising request signal 30a of the window glass 16 or the falling request.
Upon receiving the signal 30b, the rising signal 32a and the falling signal 32b are
Output to the drive circuit 18. The drive circuit 18 includes a CPU 24
Forward drive to raise the window glass 16 in response to the output signal of
The reverse drive signal for lowering the signal 34a or the window glass 16
No. 34b is given to the motor 10. The pulse generation circuit 20 has a pulse signal
Is output to the CPU 24 and the counter 26. CPU2
4 is a window glass based on the number of pulses counted by the counter 26.
The position of the switch 16 is detected. That is, the CPU 24
There is a map 36 in which the numbers correspond to the positions of the window glass 16.
For example, when the pulse number is 0,
16 is fully closed and the number of pulses is 2000 (P_MAX)
In the case of, it is detected that the window glass 16 is fully opened.
Wear. The reference numeral 38 shown in FIG.
9 shows an object sandwiched between the lath 16. The operation of the embodiment constructed as described above is as follows.
It is as follows. When the passenger wants to raise the window glass 16
, The up button on the operation switch panel 28 is pressed.
As a result, the ascending request signal from the operation switch panel 28
30a is input to the CPU 24. CPU 24 goes up
Drives up signal 32a when request signal 30a is input
Input to the circuit 18 and the drive circuit 18
To connect the motor 10 to the power supply B,
Is driven to rise. When the motor 10 rotates, the number of rotations
A corresponding ripple current is generated in the motor current. This lip
The pulsating waveform of the pull current is pulsed through the drive circuit 18.
It is led to the raw circuit 20. The pulse generation circuit 20 has a lip
The pulsating waveform of the motor current is shaped and the motor pulse signal is
It is sent to the PU 24 and the counter 26. Counter 26
As described later, the window glass 16 is controlled by the CPU 24.
Countdown when ascending, windowpane 16 descends
Activated to count up when Obedience
Therefore, the counter 26 determines that the pulse generation circuit 20
Receives the motor pulse signal generated with the forward rotation of 0
And counting down in sequence according to the number of pulse signals.
Good. On the other hand, the CPU 24 executes the processing shown in FIG.
According to the chart, there is an object between the window frame 14 and the window glass 16.
It is always determined whether or not the body 38 is pinched.
You. The CPU 24 determines in step 100 that the motor 10
Operation command (ascending request signal 30a or descending request signal
30b) to determine whether there is an operation command.
If it is, the acceptance of the interrupt processing shown in FIG.
Go to step 114, and if there is an operation command, go to step 101.
Then, the request for the interrupt processing shown in FIG. 2 is received. As shown in FIG. 4, the CPU 24
Period, for example, a timer interrupt signal is given every 100 μsec.
When the interrupt is ready to be accepted in step 101,
When an Ima interrupt signal is generated, the interrupt processing shown in Fig. 2 is executed.
I do. In this interrupt processing, the pulse generation circuit 20 outputs
The current window glass 1 based on the motor pulse signal
6 and the motor speed.
In step 50, the voltage level of the motor pulse signal is 0 (b)
-Level) to 1 (high level)
Disconnection is made. If no change, skip to step 64
And terminate the interrupt program. Also, the CPU 24
In step 50, the voltage level is higher this time than last time
Is high, that is, the voltage level changes from 0 to 1.
If the window glass 16 has been turned
It is determined whether or not the ascending (UP operation) is being performed. Window glass 16 rises
If it is medium, go to step 54 and set the counter 26 to 1.
Decrement (count down)
If so, the process proceeds to step 56, where the counter 26 is incremented by one.
Then, the process proceeds to step 58. The motor pulse signal, that is, the
The pulsation waveform due to the pull current is generated while the motor 10 makes one rotation.
A certain number of times (number of rotor 10 segments of motor 10)
It is well known that the motor
Of the window glass 16 by the lifting mechanism to which the window 16 is connected.
It is proportional to the rise or fall. Therefore, as shown in FIG.
Of the window glass 16 from the fully closed position to the fully open position
The motor rotation speed when the window glass 16 moves up and down the roke is
For example, the cowl at the fully closed position of the window glass 16 is
And the value P of the fully opened position of the window glass 16 is set to 0.
_MAXIs 2000, the window depends on the contents of the counter 26.
The position of the glass 16 can be detected. That is,
Tops 54 and 56 detect the current position of window glass 16.
Will be. In step 58, the motor is started.
A determination is made as to whether the The rotation speed of the motor 10 is shown in FIG.
As shown in the example when the glass 16 is raised, the motor is started.
At the time (initial operation), the change is large. Therefore, the initial operation
At the time, for example, after starting the motor 10, 100 to 200
Since the state is a transition state during msec, the process proceeds to step 64.
And exit the interrupt program. And the CPU 24
Determined that the motor was not started at step 58
When the process proceeds to step 60, the current rotation of the motor 10 is performed.
Speed (period of motor pulse signal) T_pAnd calculate
As shown in step 62, the speed data table of a memory not shown
And the process proceeds to step 64 to end the interrupt processing.
You. This cycle T_pIs calculated during the previous interrupt processing.
Step 60 from the step 60
By calculating the elapsed time before passing through
Ask. That is, as shown in FIG.
From the timer interrupt signal after the
Timer signal after the next transition of the timer signal from 0 to 1.
Is the motor pulse period T_pAnd Follow
If the period of the timer interrupt signal is 100 μsec,
Data pulse period T_pIs calculated as T_p± 100
μsec. According to the experimental data, the period T_pIs
Motor 1 including sliding resistance between window frame 14 and window glass 16
0 The maximum speed varies depending on the load, motor type, etc.
The actual measured value at the time is about 1.2 msec, and the calculated value is 1.1 to
1.3 msec. Therefore, the difference between them is at most about 1
It is about 0%. However, when an object is sandwiched,
The motor speed decreases and the period T_pIs larger,
Experiment shows that the difference is small and there is no problem in practice
More confirmed. Further, the period T_p(Motor speed)
If you want to improve the detection accuracy of the timer interrupt signal,
Reduce the cycle or measure the motor pulse cycle m times
The average value is regarded as the current motor speed.
You may. The above-mentioned speed data table is, for example, shown in FIG.
5 and the n cycles T up to the previous time_p
Are arranged in chronological order from the oldest.
And the oldest period T in time_pnIs deleted and the conventional T_p
Is T_p1And T_p1Is T_p2It will be updated like this. The CPU 24 reaches step 64 and interrupts
Upon completion of the process, the process returns to the main routine shown in FIG.
The process proceeds to step 102 to determine whether or not the motor 10 has been started.
Make a judgment. If it is a startup, go to step 103
A determination is made as to whether the operation is a rising operation. If the operation switch
If the input signal from panel 28 is ascending request signal 30a
If it is determined that the operation is ascending, the process proceeds to step 104, where
The ascent signal 32a is input to the road 18, and the process returns to the step 100.
You. Also, the signal input to the CPU 24 is a descending request.
If the signal is 30b, the CPU 24
Proceeding to step 117, the drive circuit 18 sends the falling signal 32b
And returns to step 100. In step 102, when the motor is started,
When it is determined that the motor has started,
Time has elapsed and the motor 10 is in a steady operating state
Goes to step 105, the speed data table shown in FIG.
Up to the previous n speed data (motor pulse signal
Period T)_mIs determined by the following equation. [0028] That is, step 105 calculates the immediately preceding motor speed.
ing. Thereafter, the CPU 24 proceeds to step 106.
It is determined whether the operation is ascending or not.
Go to step 107, and the current position of the window glass 16 is the fully closed position.
It is determined whether it is within the range (near the fully closed position). All this
The closed position range is, as shown in FIG.
Even if the speed change rate increases due to deceleration, the window glass 16
It may be judged that it is a motor lock for fully closing
Position where there is no danger of the object 38 being pinched.
You. Specifically, the value of the counter 26 is set in a predetermined range.
Box, for example, in the range of 0 to 100 (0 to p in FIG. 3).
And If the window glass 16 is out of the fully closed position range,
Proceeding to step 108, the current motor speed and step 1
The ratio with the previous motor speed calculated in 05, that is, the motor speed
Degree change rate T_p/ T_mIs greater than or equal to a predetermined value α
to decide. This allows you to see if there is an object
Can be determined. That is, if there is an object sandwiched,
The load applied to the motor increases, as shown in FIG.
The motor rotation speed decreases and the motor pulse signal period
T_pnIncreases. Therefore, the motor speed decreases,
As shown in FIG. 7B, (T_p/ T_m) ≧ α,
It is determined that the object 38 is pinched. Note that the motor speed is set to
Also, motors such as sliding resistance between window frame 14 and window glass 16
6 (B) due to the increase and decrease of the load to be performed and the fluctuation of the power supply voltage.
Slightly fluctuate as shown in FIG. Therefore, when setting the value of α,
In this case, it is necessary to repeat the experiment and select an appropriate value. In step 108, if there is an object
When it is determined, the process proceeds to step 109, where the CPU 24
Sends a descending signal 32b to the drive circuit 18 and
0 is inverted, and the window glass 16 is lowered. This window gala
In step 110, (T_p/ T
_m) Is performed until it is determined that ≧ β. The value of β is β
> Α. This is shown in FIG.
As shown in the example of the rise of 6, the whole of the window glass 16 is shown.
When the motor is closed or fully open, the rate of change in motor speed increases.
This is to detect this. Α <β
As a result, the motor deceleration is smaller than when the motor is fully closed.
, That is, detecting the pinching while the force to pinch the object is weak
However, the object can be prevented from being pinched by reversing the motor. The CPU 24 determines in step 110 that the window glass
When it is detected that the shutter 16 has been fully opened, step 11
The process proceeds to 1 and the value of the counter 26 is reset. this is,
This is to improve the reliability of the position detection of the window glass 16.
In other words, power supply fluctuation of the motor 16 or mixing of induction noise
Counter 26 miscounts the motor pulse signal
The reference value may be reset when the window glass 16 is fully opened.
Set the counter 26 to zero when fully closed as described later.
Clear, counter value and actual position of window glass 16
Is prevented from shifting. Next, the CPU 24 proceeds to step 114.
Output a motor stop signal to the drive circuit 18 and
In the speed data table of FIG._m1Set
You. That is, in step 115, the speed data table
The value of T_m1To This is because the motor starts and the initial operation
It's time to go from step 102 to step 105 first
Then, it becomes data for calculating the motor speed. T_m1
Is determined by experiment. At step 115, T_m1Set ended
Thereafter, the flow returns to step 100 again. In step 106, the up operation, that is,
When it is determined that the window glass 16 is not moving up,
Proceed to step 116 to determine whether the window glass 16 is in the fully open position.
Make a decision. If the window glass 16 is in the fully open position,
Go to step 111, if not in the fully open position, go to step 117
Proceedingly, a falling signal is given to the driving circuit 18 and step 10
Return to 0. The CPU 24 determines in step 106 that the
It is determined that the window glass 16 is in the
When it is determined that it is within the closed position range, step 112 is executed.
To (T_p/ T_m) ≧ β, ie, window glass 1
It is determined whether 6 is the fully closed position. Window glass 16 is fully closed
If so, the routine proceeds to step 113, where the counter 26 is reset.
And execute steps 114 and 115 to
Return to Top 100. However, in step 112
(T_p/ T_m) <Β, the window glass 16
Has not been fully closed yet, so go to step 104,
Give rise signal to drive circuit 18 and return to step 100
You. Further, the CPU 24 proceeds to step 106
Is determined to be an up operation, and the window glass 16 is in the fully closed position range.
It is determined in step 107 that the position is outside the range, and step 108
When it is determined that there is no object
Execute 104 and return to step 100. As described above, in this embodiment, the mode
Monitor the motor speed fluctuation rate that is not an absolute amount such as the motor speed
Reduce the effects of motor load variations.
Can be done. Then, the value of the comparison value (set value) α
By selecting an appropriate value for
Detect the eyes and lower the window glass 16 to the fully open position.
By doing so, it is possible to eliminate the damage and damage of the sandwiched object
It is very safe. In the fully closed and fully open positions
Uses the comparison value β larger than α,
If the speed fluctuation rate of the motor does not increase significantly,
The motor 10 will not stop unless the force is large enough.
The window glass 16 can be completely closed and fully opened.
Become. Further, in this embodiment, the motor 10
Of the window glass 16 is counted by the counter 26.
Position is detected and transmitted to the transmission mechanism including the motor body.
Is not equipped with any sensors, reducing costs
And various restrictions can be eliminated. And the counter
Is zero-cleared when the window glass 16 is fully closed, and
In order to reset the window glass,
Position can be detected accurately. Also, the position of the window glass 16
From the point where accurate detection is possible, reduce the fully closed position range.
It is possible that the sandwiched object is quite small
Can also detect entrapment. FIGS. 8 and 9 illustrate another embodiment of the present invention.
Is a flowchart showing the operation according to the speed of the motor 10.
The example which detects the pinching of the object 38 is shown. The CPU 24 always executes the processing shown in FIG.
The processing is started from step 150. Soshi
Therefore, when there is no operation for raising and lowering the window glass 16, that is, when the operation switch is
When no signal is input from the touch panel 28,
Are not generated, Step 152, Step 1
From 54, the process proceeds to step 156. And the CPU 24
After extinguishing the ascending signal 32a in step 156,
Proceeding to step 162 via steps 158 and 160,
Prohibit the interrupt processing shown in FIG. 9 and return to step 152
You. A rising request signal from the operation switch panel 28
When 30a is input to the CPU 24, the CPU 24
The process proceeds from step 154 to step 164 where the drive circuit 18
Signal 34a to the motor 10 and the motor 10
(Forward rotation) in the direction in which Then,
Proceed to step 166 to accept the interrupt processing shown in FIG.
And the motor pulse signal transmitted by the pulse generation circuit 20
To trigger the interrupt routine. The interrupt processing shown in FIG. 9 is performed by using the window shown in FIG.
This is equivalent to the detection of the position of the glass 16 and is performed in step 2
The rotation of the motor 10 output by the pulse generation circuit 20 at 00
The frequency of the motor pulse signal (speed
Set value f₀Compare with And the pulse period
Wave number> f₀If the pulse frequency is abnormally high
, The process returns to the main routine of FIG.
In step 200, the answer is yes, and a rising signal is issued.
If it is raw, count down the counter by 1 and issue a falling signal
If raw, count up by 1 and return to the main routine
To step 168. At step 168, the CPU 24 executes the processing shown in FIG.
The value of the counter 26, which has been counted down by
Compare with constant value P. The set value P is set as shown in FIG.
This is a value indicating the fully closed position range of the lath 16, as described above.
In the embodiment, it is 100. In step 168, the window glass 16 is in the fully closed position.
If it is determined that it is within the range, the process proceeds to step 170.
The pulse frequency to the set value f_LCompare with This setting
f_LIs equivalent to the set value β in the previous embodiment.
Therefore, it is determined to be NO (NO) in step 170.
Window glass 16 has not yet been fully closed
Return to step 152, and answer "YES" again.
At the time of judgment, since the window glass 16 was completely closed,
Proceeding to step 176 via steps 172 and 174,
The counter 26 is cleared to zero and the process returns to step 152. On the other hand, if no (N
O), that is, it is determined that the window glass 16 is out of the fully closed position range.
If so, the process proceeds to step 178, where the pulse frequency is
Set value f_HCompare with This set value f_HIs the previous example
Is equivalent to the set value α. And step 1
If no (NO) at 78, there is no pinching of the object
Then, returning to step 152, if yes (YES),
It is determined that the object is pinched, and steps 180 and 18 are performed.
2 to step 182 to generate an abnormal signal.
It returns to step 152. At step 184, an abnormal signal is generated and
Returning to step 152, the CPU 24 proceeds to step 186.
And outputs a descending signal 32b to the drive circuit 18 so that the motor 1
0 is inverted and the window glass 16 is lowered. Then
Proceeding to step 188, the interrupt processing of FIG.
The process proceeds to step 190. Step 1
If no at 90, the windowpane 16 is fully opened.
Return to step 152, 186,188,
The loop of 190 is executed. Then, to step 190
If you decide yes (YES),
16 is fully open, so through steps 192 and 194
Proceeding to step 196, the value of the counter 26 is_MAXAgain
After setting, the abnormal signal disappears in step 198 and
Return to step 152. In this embodiment, too, a cell such as an optical fiber is used.
Without special sensors or limit switches.
Early detection of entrapment of the object,
Damage can be prevented. In the above embodiment, the window gear of the automobile door is
The device for opening and closing the lath 16 has been described.
Glass, doors and shutters
It can also be applied as a closing device. [0050] As described above, according to the present invention,
When the window glass is moving to the closing side, the window glass operation is determined.
The windowpane is determined to be in the closing operation by the
The windowpane is out of the fully closed position range by the windowpane position detector
If it is determined that
Is greater than or equal to a first set value, a reverse rotation command is generated.
Reversing drive for opening the window glass from the drive circuit
Move the window glass to the closing side to supply the motion signal to the motor.
The side that opens the window glass before the running motor stops
To avoid pinching. And window glass
When the window is moving to the closing side,
The window glass is being closed, and
The position discriminator determines that the window glass is within the fully closed position range.
The speed change calculator calculates the first set value
Stop command is issued if the value is equal to or greater than the second set value larger than
Forward drive to stop the window glass from the drive circuit
The supply of the signal is stopped, and the window glass stops at the fully closed position.
Therefore, when an object is sandwiched between the window frame and the window glass
In particular, sensors and limit switches such as optical fibers
Without stopping, and before the motor stops rotating.
The motor is reversed and the window is lowered.
To minimize the damage and damage of the object
As a result, an excellent effect of improving safety is achieved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flowchart illustrating the operation of an embodiment of a window glass opening / closing device according to the present invention. FIG. 2 is a flowchart of a method for obtaining a window glass position and a motor speed in the embodiment. FIG. 3 is a block diagram of the embodiment. FIG. 4 is an explanatory diagram of an interrupt processing timing of FIG. 2 and a motor pulse signal generated by a pulse generation circuit. FIG. 5 is an explanatory diagram showing an example of a motor speed data table used to calculate a motor speed change rate. FIG. 6A is an explanatory diagram showing the relationship between the position of the window glass 16 and the motor speed, and FIG. 6B is an explanatory diagram showing the relationship between the position of the window glass 16 and the motor speed change rate. 7A is an explanatory diagram of a change in motor speed when an object is sandwiched, and FIG. 7B is an explanatory diagram of a motor speed change rate when an object is sandwiched. FIG. 8 is a flowchart illustrating the operation of another embodiment according to the present invention. FIG. 9 is a flowchart illustrating the operation of another embodiment according to the present invention. [Description of Signs] 10 Motor 14 Window frame 16 Window glass 18 Drive circuit 20 Pulse generation circuit 22 Controller 24 CPU (Central Processing Unit) (Window glass position discriminator, speed calculator, speed change calculator, window glass motion discriminator , Reverse rotation command generator, stop command generator) 26 Counter 28 (Operation switch) Operation switch panel B Power supply

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-58-189472 (JP, A) JP-A-61-39873 (JP, A) JP-A-53-8084 (JP, A) 193082 (JP, U) JP-B-57-21634 (JP, B2) JP-B-54-42129 (JP, B2) (58) Fields investigated (Int. Cl. ⁶ , DB name) E05F 15/00-15 / 20 B60J 1/00-1/17

Claims (1)

(57) [Claims] An operation that generates an ascending request signal or a descending request signal
While raising the window glass by the operation switch and the forward drive signal, the reverse drive
Conductive to the motor with and is electrically connected to the motor for lowering the window glass, to the power supply by motion signal
Pneumatically connected, and a forward drive signal or
A drive circuit for supplying a reverse rotation drive signal, and a motor pulse signal corresponding to the number of rotations of the motor
And a pulse generator circuit , which is electrically connected to a power supply and is generated by the operation switch.
Forward request signal and descend request signal
Motion signal, a window glass opening and closing device provided with a controller for converting to a reverse rotation drive signal , wherein the controller includes the number of motor pulse signals generated by the pulse generation circuit,
Countdown when windowpane rises, windowpane
A counter for counting counts up when lowered, more count value of said counter, the window glass is fully closed position
And the window glass position discriminator for discriminating whether or not in the range, based on the motor pulse signal the pulse generating circuit has occurred, the speed calculator for determining the rotational speed of the motor, speed the speed calculator has determined A speed change calculator that calculates at least one of a rotation speed change amount and a speed change rate of a current measurement value with respect to a previous measurement value based on data, and a motor pulse signal generated by the pulse generation circuit . A windowpane operation discriminator for discriminating whether the windowpane is performing a closing operation or an opening operation, and the windowpane operation discriminator determines that the windowpane is performing a closing operation, and the windowpane When the position discriminator determines that the window glass is out of the fully closed position range , when the calculation data of the speed change calculator is equal to or greater than a predetermined first set value, the drive circuit sends a signal to the motor. , Window moth A scan
A reverse rotation command generator that supplies a reverse rotation drive signal for opening operation, the windowpane operation discriminator determines that the windowpane is in the closing operation, and the windowpane position discriminator determines that the windowpane is completely closed. If it is determined that the motor is within the closed position range and the calculated data of the speed change calculator is equal to or greater than a second set value that is larger than the first set value, the drive circuit controls the motor.
Supply the forward rotation drive signal to stop the window glass.
A window glass opening / closing device, comprising: a stop command generator for stopping.