JP4747043B2 - Power window equipment - Google Patents

Description

  The present invention relates to a power window device that automatically opens and closes a window glass based on an electric driving force. More specifically, the present invention relates to a window glass when an object is caught in the window glass as the window glass is closed. The present invention relates to a power window device having a function (a pinching detection function) for detecting that an object has been pinched.

  In this type of power window device, after the window glass closing operation is started once the window glass is in the fully open position, for example, after the window glass closing operation is started, an operation for releasing the window glass closing operation is performed. The window glass closing operation is automatically continued until the window glass reaches the fully closed position, except when the above is performed. For this reason, it can be said that the manual closing switch does not need to be operated until the window glass reaches the fully closed position. In such a case, it can be said that it is necessary to automatically detect that an object has been caught in the window glass and take appropriate measures.

  Therefore, a power window device has been proposed that has a pinching detection function. Patent Document 1 discloses a technique for detecting that an object is sandwiched between window glasses by a pulse detection method.

  In the pulse detection method, detection is performed by being sandwiched based on a pulse signal synchronized with the rotation of the motor being input from the pulse sensor to the controller. That is, every time a pulse signal is input from the pulse sensor, the controller inputs the cycle T (0) of the latest pulse signal input last and one to N−1 before the pulse signal. After adding all the periods T (1) to T (N−1) of the past pulse signals, the total value is divided by N to calculate an average pulse period T (AVE). The controller then subtracts the average pulse period T (AVE) from the period T (0) of the latest pulse signal to calculate a period difference value ΔT (0).

The controller then compares this period difference value ΔT (0) with a preset threshold value ΔT (X). Then, when the period difference value ΔT (0) is larger than the threshold value ΔT (X), the controller determines that something is sandwiched between the window glasses with the window glass closing operation. When the controller detects that an object has been sandwiched between the window glasses, the window glass closing operation is temporarily stopped and then the window glass opening operation is performed for a predetermined time. As a result, the object sandwiched between the window glasses is released based on such a reversing operation of the window glass.
JP-A-9-324581 (paragraph numbers 0004 to 0009, FIG. 4)

  By the way, in the vehicle capable of opening and closing the roof portion, the sliding resistance of the window glass differs between the roof open state and the roof closed state even if the position of the window glass is the same. For this reason, considering that a load corresponding to the sliding resistance of the window glass is applied to the motor, the pulse input from the pulse sensor to the controller is the same even when the window glass is in the same position in the roof open state and the roof closed state. The signal periods are different from each other, and the period difference values ΔT (0) calculated based on the signal periods are different from each other.

  For example, when the sliding resistance of the window glass in the roof closed state is greater than that in the roof open state, the period difference value ΔT (0) in the roof closed state is It becomes larger than that when the roof is open. For convenience, the period difference value ΔT (0) in the roof open state is expressed as the first period difference value, and the period difference value ΔT (0) in the roof closed state is referred to as the second period difference value for convenience. Express. That is, there is a relationship of “first cycle difference value <second cycle difference value” between the two.

  Here, it is assumed that the threshold ΔT (X) is set to a small value in consideration of the first period difference value. The threshold value ΔT (X) at this time is expressed as a first threshold value for convenience. Then, in this case, while calculating the period difference value ΔT (0) based on the period of the pulse signal input from the pulse sensor to the controller in accordance with the window glass closing operation in the roof closed state, When the period difference value ΔT (0) is compared with the first threshold value to detect whether an object is sandwiched between the window glasses, the following problem occurs.

  In other words, in this case, the difference between the period difference value ΔT (0) and the first threshold value is small, so that disturbances caused by the running of the vehicle (for example, vehicle fluctuations) even if objects are not sandwiched between the window glasses. ) May be erroneously detected as an object sandwiched in the window glass (first problem).

  On the other hand, it is assumed that the threshold value ΔT (X) is set to a large value in consideration of the second period difference value. The threshold value ΔT (X) at this time is expressed as a second threshold value for convenience. Then, in this case, the period difference value ΔT (0) is calculated based on the period of the pulse signal input from the pulse sensor to the controller in accordance with the closing operation of the window glass in the roof open state. When the period difference value ΔT (0) is compared with the second threshold value to detect whether an object is sandwiched between the window glasses, the following problem occurs.

  That is, in this case, since the difference between the period difference value ΔT (0) and the second threshold value is large, the window glass is not applied to the window glass until a large load is applied to the object sandwiched between the window glasses. It will be detected that an object has been caught. Therefore, in this case, a load exceeding the maximum load (allowable maximum load) allowed to be applied to the object sandwiched between the window glasses may be applied to the object sandwiched between the window glasses. It is not preferable (second problem).

  Similarly, in the case of a vehicle that can open and close the quarter window, since the sliding resistance of the window glass is different in the quarter window open state and the quarter window closed state, the sliding resistance of the window glass is different from each other. The second problem or the second problem may occur.

  The present invention has been made paying attention to such a problem, and its purpose is to falsely detect that an object is sandwiched in the window glass even though the object is not sandwiched in the window glass. An object of the present invention is to provide a power window device capable of preventing the load and reducing a load applied to an object sandwiched between window glasses.

  In order to achieve the above object, the invention described in claim 1 includes a physical quantity acquisition unit that automatically opens and closes the window glass based on an electric driving force and acquires a physical quantity associated with the closing operation of the window glass. In the power window device provided with the pinching detection means for detecting that the object is pinched in the window glass, on the condition that the physical quantity larger than the reference physical quantity is acquired by the physical quantity acquisition means, the roof portion is opened. The reference physical quantity for the roof open state associated with the roof open state that is in the closed state is stored, and the reference physical quantity for the roof closed state that is associated with the roof closed state in which the roof portion is closed is stored. A physical quantity storage means, wherein the pinching detection means is in the roof open state when the roof open state reference On the condition that a physical quantity larger than the quantity is acquired by the physical quantity acquisition means, it is detected that an object is sandwiched between the window glasses, and when the roof is in the closed state, it is larger than the reference physical quantity for the roof closed state. The gist of the present invention is to detect that an object is sandwiched between the window glasses on the condition that the physical quantity is acquired by the physical quantity acquisition means.

  According to this configuration, a common reference physical quantity is not used when the roof is open and when the roof is closed, but when the roof is open, the reference physical quantity for the roof open state is used and the roof is closed. When in the state, the reference physical quantity for the roof closed state is used.

  Therefore, the difference between the physical quantity acquired by the physical quantity acquisition means in the roof open state (roof closed state) and the reference physical quantity for roof open state (reference physical quantity for roof closed state) is prevented from becoming smaller than necessary. Is done. Therefore, if a disturbance only occurs, it is not detected that an object is sandwiched between the window glasses.

  Further, the difference between the physical quantity acquired by the physical quantity acquisition means in the roof open state (roof closed state) and the reference physical quantity for roof open state (reference physical quantity for roof closed state) is prevented from becoming unnecessarily large. The Therefore, before a large load is applied to the object sandwiched between the window glasses, it is detected that the object is sandwiched between the window glasses.

  Therefore, it is possible to prevent erroneous detection that an object is sandwiched in the window glass even though the object is not sandwiched in the window glass, and to reduce the load applied to the object sandwiched in the window glass. .

  The invention according to claim 2 is the power window device according to claim 1, each time the closing operation of the window glass is normally completed without the object being caught in the window glass in the roof open state. The physical quantity acquired by the physical quantity acquisition means in accordance with the closing operation is updated as a new reference physical quantity for the open state of the roof and stored in the reference physical quantity storage means. Every time the window glass closing operation is normally completed without being pinched, the physical quantity acquired by the physical quantity acquisition means in accordance with the closing operation is updated as a new roof closed state reference physical quantity, which is then used as the reference. The gist of the invention is that it includes a reference physical quantity update means for storing in the physical quantity storage means.

  According to this configuration, every time the window glass closing operation is completed without an object sandwiched between the window glasses, the roof open state reference physical quantity (the roof closed state reference physical quantity) stored in the reference physical quantity storage means is obtained. Updated. Therefore, even if the physical quantity that accompanies the closing operation of the window glass fluctuates due to secular change, whether the object is sandwiched in the window glass by using the latest reference physical quantity for the roof opening state (reference physical quantity for the roof closing state) Whether or not can be detected reliably.

  According to the third aspect of the present invention, the physical quantity acquisition means for automatically opening and closing the window glass based on the electric driving force and acquiring the physical quantity accompanying the closing operation of the window glass, and a physical quantity larger than a reference physical quantity are In a power window device provided with a pinch detection means for detecting that an object has been pinched in a window glass on the condition that it is acquired by a physical quantity acquisition means, the quarter window is in an open state in which the quarter window is open. Reference physical quantity storage means for storing the associated reference physical quantity for the quarter window open state and for storing the quarter window closed reference physical quantity associated with the quarter window closed state in which the quarter window portion is closed The pinching detection means When the quarter window is in an open state, it is detected that a physical quantity larger than the reference physical quantity for the quarter window open state has been acquired by the physical quantity acquisition means, and that the object is sandwiched in the window glass, The gist of the present invention is to detect that an object has been sandwiched between the window glasses on the condition that a physical quantity larger than the reference physical quantity for the quarter window closed state is acquired by the physical quantity acquisition means when the window is in the closed state. Yes.

  According to the same configuration, when the quarter window is open and when the quarter window is closed, a common reference physical quantity is not used, but when the quarter window is open, the reference physical quantity for the quarter window is used. At the same time, when the quarter window is closed, the quarter window closed reference physical quantity is used.

  Therefore, the difference between the physical quantity acquired by the physical quantity acquisition means in the quarter window open state (quarter window closed state) and the reference physical quantity for quarter window open state (reference physical quantity for quarter window closed state) is smaller than necessary. Is prevented. Therefore, if a disturbance only occurs, it is not detected that an object is sandwiched between the window glasses.

  Also, the difference between the physical quantity acquired by the physical quantity acquisition means in the quarter window open state (quarter window closed state) and the quarter window open state reference physical quantity (quarter window closed state reference physical quantity) becomes larger than necessary. It is prevented. Therefore, before a large load is applied to the object sandwiched between the window glasses, it is detected that the object is sandwiched between the window glasses.

  Therefore, it is possible to prevent erroneous detection that an object is sandwiched in the window glass even though the object is not sandwiched in the window glass, and to reduce the load applied to the object sandwiched in the window glass. .

  The invention according to claim 4 is the power window device according to claim 3, every time when the closing operation of the window glass is normally completed without being sandwiched between the window glass in the quarter window open state, The physical quantity acquired by the physical quantity acquisition means in accordance with the closing operation is updated as a new quarter window open state reference physical quantity and stored in the reference physical quantity storage means. Each time the window glass closing operation is normally completed without being caught in the object, the physical quantity acquired by the physical quantity acquisition means along with the closing operation is updated as a new quarter window closed state reference physical quantity. Reference physical quantity update means for storing it in the reference physical quantity storage means is provided. The door has as its gist.

  According to this configuration, every time the window glass closing operation is completed without an object sandwiched between the window glasses, the quarter window open state reference physical quantity (the quarter window closed state reference physical quantity stored in the reference physical quantity storage means). ) Is updated. Therefore, even if the physical quantity associated with the closing operation of the window glass fluctuates due to secular change, the latest reference physical quantity for the quarter window open state (reference physical quantity for the quarter window closed state) is used, so that objects are sandwiched between the window glass It is possible to reliably detect whether or not

Since this invention is comprised as mentioned above, there exist the following effects.
According to the present invention, it is possible to prevent erroneous detection that an object is sandwiched between the window glasses, even though no object is sandwiched between the window glasses, and to be added to the objects sandwiched between the window glasses. The load can be reduced.

(First embodiment)
A first embodiment in which the present invention is embodied in a vehicle power window device will be described below.
As shown in FIG. 1, in the power window device 1, the drive control of the motor 30 is performed by the power window control device 20 in accordance with the operation of the switch group 10, and the rotational drive force (electric drive force) of the motor 30. To automatically open and close the window glass.

  The controller 50 of the power window control device 20 turns off the FETs 61 to 64 during standby when neither the opening operation nor the closing operation of the window glass is performed. For this reason, since no current flows through the motor 30 during standby, neither the opening operation nor the closing operation of the window glass is performed.

  When the manual opening switch 11 is operated from the standby state, a manual opening request signal is input from the manual opening switch 11 to the controller 50. Then, the controller 50 turns on the FETs 61 and 62 and turns off the FETs 63 and 64 over a period during which the manual opening request signal is input (period in which the manual opening switch 11 is operated). Therefore, in this case, when the current flows from the plus side terminal of the in-vehicle battery to the minus side terminal of the in-vehicle battery via the FET 61, the motor 30, and the FET 62, the motor 30 is driven to rotate forward and the window glass is opened. Is called.

  On the other hand, when the manual closing switch 12 is operated from the standby state, a manual closing request signal is input from the manual closing switch 12 to the controller 50. Then, the controller 50 turns on the FETs 63 and 64 and turns off the FETs 61 and 62 during the period in which the manual closing request signal is input (the period in which the manual closing switch 12 is operated). Therefore, in this case, when the current flows from the plus side terminal of the in-vehicle battery to the minus side terminal of the in-vehicle battery via the FET 63, the motor 30, and the FET 64, the motor 30 is driven in reverse and the window glass is closed. .

  On the other hand, when the auto-open switch 13 is operated from the standby state, an auto-open request signal is input from the auto-open switch 13 to the controller 50. Then, the controller 50 continues to turn on the FETs 61 and 62 and turns off the FETs 63 and 64 until the window glass reaches the fully open position, except when an operation for canceling the opening operation of the window glass is performed. Continue to operate. Therefore, in this case, when the current flows from the plus side terminal of the in-vehicle battery to the minus side terminal of the in-vehicle battery via the FET 61, the motor 30, and the FET 62, the motor 30 is driven to rotate forward and the window glass is opened. Is called.

  Finally, when the auto close switch 14 is operated from the standby time, an auto close request signal is input from the auto close switch 14 to the controller 50. Then, the controller 50 keeps the FETs 63 and 64 ON until the window glass reaches the fully closed position, except when an operation for canceling the closing operation of the window glass is performed, and the FETs 61 and 62. Continue to operate OFF. Therefore, in this case, when the current flows from the plus side terminal of the in-vehicle battery to the minus side terminal of the in-vehicle battery via the FET 63, the motor 30, and the FET 64, the motor 30 is driven in reverse and the window glass is closed. .

  As shown in FIG. 2, a magnet 32 is provided on the shaft 31 of the motor 30 so as to be able to rotate integrally with the shaft 31 so as to surround the shaft 31. The poles are magnetized, and the N poles are magnetized in the remaining half circumference of the shaft 31. The motor 30 is provided for the purpose of magnetically detecting the rotation of the shaft 31 and includes two pulse sensors 34 and 35 for outputting a pulse signal synchronized with the rotation of the shaft 31 to the controller 50. Yes. Each of these pulse sensors 34 and 35 is constituted by a Hall IC.

  Each of the pulse sensors 34 and 35 outputs an H level signal to the controller 50 when the N pole is detected, and outputs an L level signal to the controller 50 when the S pole is detected. FIG. 3 shows a pulse signal input from the pulse sensors 34 and 35 to the controller 50 as the shaft 31 rotates.

  The controller 50 detects the amount of movement of the window glass by counting the number of rising edges of the pulse signal input from the pulse sensor 34 using the counter 51. The controller 50 detects the moving direction of the window glass by detecting the level of the pulse signal input from the pulse sensor 35 when the rising edge of the pulse signal input from the pulse sensor 34 is detected.

  Specifically, when the controller 50 detects the rising edge of the pulse signal input from the pulse sensor 34 and the level of the pulse signal input from the pulse sensor 35 is H level, the moving direction of the window glass Is detected to be in the open direction. Further, when the controller 50 detects the rise of the pulse signal input from the pulse sensor 34 and the level of the pulse signal input from the pulse sensor 35 is L level, the moving direction of the window glass is closed. Detect the direction.

  Then, the controller 50 recognizes the current position of the window glass using the moving direction of the window glass and the moving amount of the window glass. Each time the controller 50 detects the rising edge of the pulse signal input from the pulse sensor 34, the cycle T (0) of the latest pulse signal last input from the pulse sensor 34 and 1 than the pulse signal. All the periods T (1) to T (N−1) of the past pulse signals respectively input before N−1 are added. Then, the controller 50 divides the total value by N to calculate an average pulse period T (AVE). Then, the controller 50 calculates the period difference value ΔT (0) by subtracting the average pulse period T (AVE) from the period T (0) of the latest pulse signal. That is, the controller 50 calculates the period difference value ΔT (0) for each position of the window glass (every time the rising edge of the pulse signal input from the pulse sensor 34 is detected).

  Then, the controller 50 compares the period difference value ΔT (0) with a preset threshold value ΔT (X). Then, when the period difference value ΔT (0) is larger than the threshold value ΔT (X), the controller 50 determines that something has been sandwiched between the window glasses with the window glass closing operation. When the controller 50 detects that an object has been sandwiched between the window glasses, the window glass closing operation is temporarily stopped and then the window glass opening operation is performed for a predetermined time. As a result, the object sandwiched between the window glasses is released based on such a reversing operation of the window glass.

  Here, the vehicle equipped with the power window device 1 of the present embodiment includes a mechanism that can open and close the roof portion. In such a vehicle, even if the position of the window glass is the same between the state in which the roof portion is open (roof open state) and the state in which the roof portion is closed (roof closed state), the window The sliding resistance of glass is different from each other. The reason is that when the window glass is moved from the fully open position to the fully closed position in the roof open state, the window glass does not touch the roof portion, but the window glass is moved from the fully open position to the fully closed position in the roof closed state. This is because the window glass comes into contact with the roof portion. Therefore, the position of the window glass where the sliding resistance of the window glass in the roof closed state is larger than that in the roof open state is close to the fully closed position.

  Considering that a load corresponding to the sliding resistance of the window glass is applied to the motor 30, even if the position of the window glass is the same between the roof open state and the roof closed state, it is input from the pulse sensor 34 to the controller 50. The periods of the pulse signals differing from each other. The reason is that the load applied to the motor 30 is small because the window glass does not contact the roof portion in the roof open state, but the load applied to the motor 30 is large because the window glass contacts the roof portion in the roof closed state. Because it becomes. This is because as the load on the motor 30 is increased, the rotational speed of the motor 30 decreases and the cycle of the pulse signal input from the pulse sensor 34 to the controller 50 increases.

  Therefore, as shown in FIG. 4, when the window glass is close to the fully closed position, the period of the pulse signal input to the controller 50 from the pulse sensor 34 in the roof closed state is higher than that in the roof open state. It is getting bigger. In this way, in the roof open state and the roof closed state, even if the position of the window glass is the same, the periods of the pulse signals input from the pulse sensor 34 to the controller 50 are different from each other. The cyclic difference values ΔT (0) to be performed are different from each other. For convenience, the period difference value ΔT (0) in the roof open state is expressed as a period difference value ΔT1 (0) for roof open state, and the period difference value ΔT (0) in the roof closed state is expressed for convenience. This is expressed as a state period difference value ΔT2 (0).

  As shown in FIG. 1, a roof controller 70 is electrically connected to the controller 50, and a roof courtesy switch 71 is electrically connected to the roof controller 70.

  When the roof portion is in the roof open state, a roof open state detection signal indicating that the roof is in the open state is input from the roof courtesy switch 71 to the roof control device 70, and at this time, the roof is in the open state. Is input from the roof control device 70 to the controller 50. Then, the controller 50 recognizes that the roof portion is in the roof open state when the roof open state specifying signal is input from the roof control device 70.

  On the other hand, when the roof portion is in the roof closed state, a roof closed state detection signal indicating that the roof is in the closed state is input from the roof courtesy switch 71 to the roof control device 70, and at this time, the roof is closed. Is input from the roof control device 70 to the controller 50. Then, the controller 50 recognizes that the roof portion is in the roof closed state when the roof closed state specifying signal is input from the roof control device 70.

  Then, the controller 50 stores the period difference value ΔT (0) for each position of the window glass in the memory 52 in association with the state of the roof portion (the roof open state or the roof closed state). That is, the memory 52 stores the roof opening state period difference value ΔT1 (0) for each position of the window glass and the roof closing state period difference value ΔT2 (0) for each position of the window glass.

  Then, every time the closing operation of the window glass is completed without the object being caught in the window glass in the roof open state, the controller 50 itself is based on the period of the pulse signal input with the closing operation. Is updated as a new roof open state cycle difference value ΔT1 (0) and stored in the memory 52. In addition, every time the controller 50 completes the closing operation of the window glass without being caught in the window glass in the closed state of the roof, the controller 50 itself is based on the period of the pulse signal input with the closing operation. The roof closed state period difference value ΔT2 (0) calculated by is updated as a new roof closed state period difference value ΔT2 (0) and stored in the memory 52.

  Then, when the current window glass closing operation is performed in the roof open state, the controller 50 calculates, for each position of the window glass, the roof open state cycle calculated by the current window glass closing operation. It is determined whether or not the difference value ΔT1 (0) is larger than the roof opening state cycle difference value ΔT1 (0) stored in the memory 52. Then, the controller 50 calculates the difference in the roof opening state cycle difference value ΔT1 (0) that is larger than the roof opening state cycle difference value ΔT1 (0) stored in the memory 52. Detects that the is caught.

  In addition, when the current window glass closing operation is performed in the roof closed state, the controller 50 calculates, for each position of the window glass, the roof closed state cycle calculated by the current window glass closing operation. It is determined whether or not the difference value ΔT2 (0) is larger than the roof closed state cycle difference value ΔT2 (0) stored in the memory 52. Then, the controller 50 calculates the difference in the window closed state period difference value ΔT2 (0) that is larger than the roof closed state period difference value ΔT2 (0) stored in the memory 52. Detects that the is caught.

  The roof opening state cycle difference value ΔT1 (0) stored in the memory 52 is used to detect whether or not an object is sandwiched between the window glasses in the roof opening state. This corresponds to the threshold value ΔT (X) with which the magnitude relationship is compared with the difference value ΔT1 (0), and also corresponds to the reference physical quantity for the roof open state of the present invention. Further, the roof closed state cycle difference value ΔT2 (0) stored in the memory 52 is used to detect whether or not an object is caught in the window glass in the roof closed state. This corresponds to the threshold value ΔT (X) with which the magnitude relationship is compared with the difference value ΔT2 (0), and also corresponds to the reference physical quantity for the roof closed state of the present invention.

As described above, according to the present embodiment, the following operations and effects can be obtained.
(1) A common threshold value is not used when the roof is open and when the roof is closed. When the roof is open, the roof-opening period difference value ΔT1 (0) is used. When in the roof closed state, the roof closed state period difference value ΔT2 (0) is used. Therefore, in the roof open state (roof closed state), the current roof open state cycle difference value (roof closed state cycle difference value) calculated by the controller 50 and the roof open state stored in the memory 52 are displayed. The difference from the state cycle difference value (the roof closed state cycle difference value) is prevented from becoming unnecessarily small. Therefore, if a disturbance only occurs, it is not detected that an object is sandwiched between the window glasses. Therefore, it can be prevented that the object is erroneously detected as an object sandwiched between the window glasses although the object is not sandwiched between the window glasses.

  (2) A common threshold value is not used when the roof is in the open state and when the roof is in the closed state, but when the roof is in the open state, the period difference value ΔT1 (0) for roof open state is used, When in the roof closed state, the roof closed state period difference value ΔT2 (0) is used. Therefore, in the roof open state (roof closed state), the current roof open state cycle difference value (roof closed state cycle difference value) calculated by the controller 50 and the roof open state stored in the memory 52 are displayed. The difference from the state cycle difference value (the roof closed state cycle difference value) is prevented from becoming larger than necessary. Therefore, before a large load is applied to the object sandwiched between the window glasses, it is detected that the object is sandwiched between the window glasses. Therefore, the load applied to the object sandwiched between the window glasses can be reduced.

  (3) From (1) and (2) above, according to the present embodiment, it is erroneously detected that an object is sandwiched in the window glass even though the object is not sandwiched in the window glass. Can be prevented, and the load applied to the object sandwiched between the window glasses can be reduced.

  (4) Every time the closing operation of the window glass is completed without an object sandwiched between the window glasses, the roof opening state period difference value (roof closing state period difference value) stored in the memory 52 is updated. The Therefore, even if the roof open state period difference value (roof closed state period difference value) due to the window glass closing operation fluctuates due to secular change, the latest roof open state period difference value (roof closed state period difference value). Value) is used, it can be reliably detected whether or not an object is sandwiched between the window glasses.

  (5) The memory 52 stores a period difference value for the roof open (closed) state for each position of the window glass. Therefore, even when the sliding resistance associated with the closing operation of the window glass varies depending on the position of the window glass, the roof open (closed) state in which the current cyclic difference value for the roof open (closed) state is stored in the memory 52 is stored. Whether or not an object is sandwiched between the window glasses can be reliably detected for each position of the window glass by determining whether or not the difference is larger than the use cycle difference value.

The first embodiment can be modified and embodied as follows.
-Although it depends on the laws and regulations related to the vehicle, in the first embodiment, the state where the roof portion is fully open is defined as the roof open state, and the state where the roof portion is fully closed is defined as the roof closed state. ing. That is, according to the first embodiment, the window glass closing operation may be performed on the condition that the roof portion is in a fully open state or a fully closed state.

  On the other hand, when it is assumed that there is a law that the window part may be closed with the roof part not fully open or fully closed, for example, with the roof part half open. The same pinching detection as in the above embodiment may be realized by using a total of three types of threshold values associated with each of the roof fully open state, the roof fully closed state, and the roof half open state. Of course, the state of the roof portion may be further subdivided, and the same pinching detection as in the above embodiment may be realized using a plurality of threshold values (same as the number of subdivisions) associated with each.

  In relation to the above-described another example, there are two mechanisms that can automatically open and close the roof portion based on the rotational driving force of the roof motor, and output a pulse signal synchronized with the rotation of the roof motor to the roof control device 70. A configuration in which the pulse sensor is provided may be employed. In this case, the two pulse sensors function in the same manner as the pulse sensors 34 and 35, and the roof control device 70 functions in the same manner as the controller 50. The roof control device 70 recognizes the current position of the roof portion using the pulse signals input from the two pulse sensors, and also determines the position of the roof state specifying signal (to which position the roof portion is opened / closed). That serves as an index of whether or not the image is present) is output to the controller 50.

  If comprised in this way, the pinching detection similar to the said embodiment is realizable using the threshold value for every roof position. In this alternative example, the two pulse sensors and the roof control device 70 constitute a roof state detecting means for detecting the state of the roof portion.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. A vehicle equipped with the power window device 1 of the present embodiment includes a mechanism that can open and close the quarter window. In such a vehicle, the position of the window glass is the same between the state in which the quarter window is open (quarter window open state) and the state in which the quarter window is closed (quarter window closed state). The sliding resistance of the window glass is different from each other.

  The reason for this is that when the window glass is moved from the fully open position to the fully closed position in the quarter window open state, the window glass does not touch the quarter window, but the window glass is moved from the fully open position to the fully closed position in the quarter window closed state. This is because the window glass comes into contact with the quarter window when it is moved to. Therefore, even if the positions of the window glasses are the same, the sliding resistance of the window glass in the quarter window closed state is larger than that in the quarter window open state.

  Considering that a load corresponding to the sliding resistance of the window glass is applied to the motor 30, even if the position of the window glass is the same in the quarter window open state and the quarter window closed state, the pulse sensor 34 sends the controller 50 to the controller 50. The periods of the input pulse signals are different from each other. The reason is that the load applied to the motor 30 is small because the window glass does not contact the quarter window in the quarter window open state, but the load applied to the motor 30 because the window glass contacts the quarter window in the closed quarter window state. This is because it becomes larger. This is because as the load on the motor 30 is increased, the rotational speed of the motor 30 decreases and the cycle of the pulse signal input from the pulse sensor 34 to the controller 50 increases.

  Therefore, the period of the pulse signal input from the pulse sensor 34 to the controller 50 in the quarter window closed state is larger than that in the quarter window open state. In this way, in the quarter window open state and the quarter window closed state, even if the window glass positions are the same, the periods of the pulse signals input from the pulse sensor 34 to the controller 50 are different from each other. The period difference values ΔT (0) calculated in this way are different from each other. The period difference value ΔT (0) in the quarter window open state is expressed as a quarter window open state period difference value ΔT3 (0) for convenience, and the period difference value ΔT (0) in the quarter window closed state for convenience. The quarter window closed state period difference value ΔT4 (0).

  As shown in FIG. 5, a quarter window control device 80 is electrically connected to the controller 50, and a quarter window courtesy switch 81 is electrically connected to the quarter window control device 80. .

  When the quarter window is in the quarter window open state, a quarter window open state detection signal indicating that the quarter window is in the open state is input from the quarter window courtesy switch 81 to the quarter window control device 80. At this time, a quarter window open state specifying signal indicating that the quarter window is open is input from the quarter window control device 80 to the controller 50. Then, the controller 50 recognizes that the quarter window is in the quarter window open state when the quarter window open state specifying signal is input from the quarter window control device 80.

  On the other hand, when the quarter window is in the quarter window closed state, a quarter window closed state detection signal indicating that the quarter window is in the closed state is input from the quarter window courtesy switch 81 to the quarter window control device 80. At this time, a quarter window closed state specifying signal indicating that the quarter window is closed is input from the quarter window control device 80 to the controller 50. The controller 50 recognizes that the quarter window is in the quarter window closed state when a quarter window closed state specifying signal is input from the quarter window control device 80.

  Then, the controller 50 stores the period difference value ΔT (0) for each position of the window glass in the memory 52 in association with the quarter window state (quarter window open state or quarter window closed state). That is, the memory 52 stores the quarter window open state period difference value ΔT3 (0) for each position of the window glass and the quarter window close state period difference value ΔT4 (0) for each position of the window glass. Yes.

  Then, every time the closing operation of the window glass is completed without the object being caught in the window glass in the quarter window open state, the controller 50 is based on the period of the pulse signal input with the closing operation. The quarter window open state period difference value ΔT3 (0) calculated by itself is updated as a new quarter window open state period difference value ΔT3 (0) and stored in the memory 52. Further, every time the closing operation of the window glass is completed without the object being caught in the window glass in the quarter window closed state, the controller 50 is based on the period of the pulse signal input with the closing operation. The quarter window closed state period difference value ΔT4 (0) calculated by itself is updated as a new quarter window closed state period difference value ΔT4 (0) and stored in the memory 52.

  Then, when the current window glass closing operation is performed in the quarter window open state, the controller 50 calculates the quarter window open state calculated by itself with the current window glass closing operation for each position of the window glass. It is determined whether or not the period difference value ΔT3 (0) for use is larger than the period difference value ΔT3 (0) for the quarter window open state stored in the memory 52. On the condition that the controller 50 calculates a quarter window open state period difference value ΔT3 (0) larger than the quarter window open state period difference value ΔT3 (0) stored in the memory 52, the window glass is used. Detects that an object has been caught in

  In addition, when the current window glass closing operation is performed in the quarter window closed state, the controller 50 calculates the quarter window closed state calculated by the controller 50 itself with the current window glass closing operation for each window glass position. It is determined whether the period difference value ΔT4 (0) for use is larger than the period difference value ΔT4 (0) for the quarter window closed state stored in the memory 52. Then, on the condition that the controller 50 calculates the quarter window closed state period difference value ΔT4 (0) larger than the quarter window closed state period difference value ΔT4 (0) stored in the memory 52, the window glass is used. Detects that an object has been caught in

  The quarter window open state period difference value ΔT3 (0) stored in the memory 52 is used to detect whether or not the current quarter window is open in order to detect whether or not an object is sandwiched between the window glasses in the quarter window open state. This corresponds to the threshold value ΔT (X) with which the magnitude relation is compared with the state cycle difference value ΔT3 (0). This corresponds to the reference physical quantity for the quarter window open state of the present invention. Further, the quarter window closing state period difference value ΔT4 (0) stored in the memory 52 is used to detect whether or not the current quarter window is closed in order to detect whether or not an object is sandwiched between the window windows. This corresponds to the threshold value ΔT (X) with which the magnitude relation is compared with the state cycle difference value ΔT4 (0). This corresponds to the quarter window closed reference physical quantity of the present invention.

As described above, according to the present embodiment, the following operations and effects can be obtained.
(6) A common threshold value is not used when the quarter window is open and when the quarter window is closed. When the quarter window is open, the quarter window open period difference value ΔT3 (0) is In addition, when the quarter window is closed, the quarter window closed period difference value ΔT4 (0) is used. Therefore, the quarter window open state period difference value (quarter window closed state period difference value) calculated by the controller 50 in the quarter window open state (quarter window closed state) is stored in the memory 52. The difference from the quarter window open state period difference value (quarter window closed state period difference value) is prevented from becoming smaller than necessary.

  Therefore, if a disturbance only occurs, it is not detected that an object is sandwiched between the window glasses. Therefore, it can be prevented that the object is erroneously detected as an object sandwiched between the window glasses although the object is not sandwiched between the window glasses.

  (7) A common threshold value is not used when the quarter window is open and when the quarter window is closed. When the quarter window is open, the quarter window open state period difference value ΔT3 (0) is In addition, when the quarter window is closed, the quarter window closed period difference value ΔT4 (0) is used. Therefore, the quarter window open state period difference value (quarter window closed state period difference value) calculated by the controller 50 in the quarter window open state (quarter window closed state) is stored in the memory 52. The difference from the quarter window open state period difference value (quarter window closed state period difference value) is prevented from becoming larger than necessary.

  Therefore, before a large load is applied to the object sandwiched between the window glasses, it is detected that the object is sandwiched between the window glasses. Therefore, the load applied to the object sandwiched between the window glasses can be reduced.

  (8) From the above (6) and (7), according to the present embodiment, the object is erroneously detected as an object sandwiched between the window glasses even though the object is not sandwiched between the window glasses. Can be prevented, and the load applied to the object sandwiched between the window glasses can be reduced.

  (9) The quarter window open state period difference value (quarter window close state period difference value) stored in the memory 52 each time the window glass closing operation is completed without any object being sandwiched between the window glasses. Updated. Therefore, even if the quarter window open state period difference value (quarter window close state period difference value) due to the window glass closing operation fluctuates due to secular change, the latest quarter window open state period difference value (quarter window close state). Whether or not an object is sandwiched between the window glasses can be reliably detected by using the state period difference value.

  (10) The memory 52 stores a period difference value for a quarter window open (closed) state for each position of the window glass. Therefore, even if the sliding resistance associated with the closing operation of the window glass differs for each position of the window glass, the current quarter window open (closed) state period difference value is stored in the memory 52 in the quarter window open (closed) state. ) By determining whether or not the difference is greater than the state period difference value, whether or not an object is sandwiched between the window glasses can be reliably detected for each position of the window glass.

The second embodiment can be modified and embodied as follows.
In the second embodiment, a state in which the quarter window is fully open is defined as a quarter window open state, and a state in which the quarter window is fully closed is defined as a quarter window closed state. It prescribes. That is, the second embodiment complies with the law that the window glass may be closed on condition that the quarter window is in a fully open state or a fully closed state.

  On the other hand, when it is assumed that there is a regulation that the quarter window is not fully opened or fully closed, for example, the window glass may be closed with the quarter window half open. The same pinching detection as in the above embodiment may be realized by using a total of three types of threshold values associated with each of the quarter window fully open state, quarter window fully closed state, and quarter window half open state. Of course, the state of the quarter window may be further subdivided, and sandwiched detection similar to that in the above embodiment may be realized using a plurality of threshold values (same as the number of subdivisions) associated with each quarter window.

  In relation to the above example, the mechanism can automatically open and close the quarter window based on the rotation driving force of the quarter window motor, and outputs a pulse signal synchronized with the rotation of the quarter window motor to the quarter window control device 80. A configuration in which two pulse sensors are provided may be employed. In this case, these two pulse sensors function in the same manner as the pulse sensors 34 and 35, and the quarter window control device 80 functions in the same manner as the controller 50. The quarter window control device 80 recognizes the current quarter window position by using the pulse signals input from the two pulse sensors, and also determines the quarter window state specifying signal (to what position the quarter window is located). Output to the controller 50).

  If comprised in this way, the pinching detection similar to the said embodiment is realizable using the threshold value for every quarter window position. In this example, the two window sensors and the quarter window control device 80 constitute quarter window state detecting means for detecting the quarter window state.

The first embodiment and the second embodiment can be combined and embodied as follows.
・ Set the roof open state period difference value ΔT1 (0) and the roof close state period difference value ΔT2 (0) separately when the quarter window is open and when the quarter window is closed. May be.

  When the roof open state period difference value ΔT1 (0) premised on the quarter window open state is defined as the first roof open state period difference value ΔT11 (0), this is the first case of the present invention. It corresponds to the reference physical quantity for the roof open state. Similarly, when the roof closed state period difference value ΔT2 (0) premised on the quarter window open state is defined as the first roof closed state period difference value ΔT21 (0), this is the first roof of the present invention. It corresponds to the reference physical quantity for the closed state.

  On the other hand, when the roof open state period difference value ΔT1 (0) based on the quarter window closed state is defined as the second roof open state period difference value ΔT12 (0), It corresponds to the reference physical quantity for the roof open state. Similarly, when the roof closed state period difference value ΔT2 (0) premised on the quarter window closed state is defined as the second roof closed state period difference value ΔT22 (0), this is the second roof of the present invention. It corresponds to the reference physical quantity for the closed state.

  According to the same configuration, when the quarter window is in an open state and when the quarter window is in a closed state, a common roof open state period difference value (roof closed state period difference value) is not used. Individually set for each quarter window state is used. Therefore, suitable pinching detection can be realized.

  ・ Quarter window open state period difference value ΔT3 (0) and quarter window close state period difference value ΔT4 (0) are set individually when the roof is open and when the roof is closed. May be.

  When the quarter window open state period difference value ΔT3 (0) premised on the roof open state is defined as the first quarter window open state period difference value ΔT31 (0), this is the first of the present invention. It corresponds to the reference physical quantity for the quarter window open state. Similarly, when the quarter window closed state period difference value ΔT4 (0) premised on the roof open state is defined as the first quarter window closed state period difference value ΔT41 (0), It corresponds to the reference physical quantity for the quarter window closed state.

  On the other hand, when the quarter window open state period difference value ΔT3 (0) premised on the roof closed state is defined as the second quarter window open state period difference value ΔT32 (0), this is the second of the present invention. It corresponds to the reference physical quantity for the quarter window open state. Similarly, when the quarter window closed state period difference value ΔT4 (0) premised on the roof closed state is defined as the second quarter window closed state period difference value ΔT42 (0), It corresponds to the reference physical quantity for the quarter window closed state.

  According to this configuration, a common quarter window open period difference value (quarter window closed period difference value) is not used when the roof is open and when the roof is closed. Individually set for each state of the roof portion is used. Therefore, suitable pinching detection can be realized.

Next, technical ideas that can be grasped from the above embodiments and other examples will be described.
[1] In the power window device according to claim 1 or 2,
The reference physical quantity storage means includes a first roof open state reference physical quantity that assumes a quarter window open state in which a quarter window is open, and a first roof closed state that also assumes a quarter window open state. Reference physical quantity for the second roof open state based on the quarter window closed state in which the quarter window is closed, and the second roof closed state reference based on the quarter window closed state. It stores physical quantities and
The pinching detection means is provided on the window glass on the condition that when the quarter window is open and the roof is open, a physical quantity larger than the reference physical quantity for the first roof opening state is acquired by the physical quantity acquisition means. It is detected that a physical quantity larger than the reference physical quantity for the first roof closed state is acquired by the physical quantity acquisition means when it is detected that an object has been pinched and is in the quarter window open state and the roof closed state. The physical quantity acquisition means has detected that the physical quantity larger than the reference physical quantity for the second roof open state is detected when the quarter glass window is closed and the roof is in the open state. Detecting that an object has been caught in the window glass on the condition that the quarter window is closed and When the roof is in a closed state, it is detected that an object is sandwiched between the window glasses on the condition that a physical quantity larger than the second roof closed state reference physical quantity is acquired by the physical quantity acquisition unit. Power window device.

  According to this configuration, a common physical quantity for roof open state (reference physical quantity for roof closed state) is not used when the quarter window is open and when the quarter window is closed. Individually set for each window state is used. Therefore, suitable pinching detection can be realized.

[2] In the power window device according to claim 3 or 4,
The reference physical quantity storage means includes a first quarter window open state reference physical quantity based on a roof open state where the roof portion is open, and a first quarter window closed state based on the roof open state. Standard physical quantity for the second quarter window assuming the roof closed state in which the roof portion is closed, and the second reference for the quarter window closed state assuming the roof closed state. It stores physical quantities and
The sandwiching detection means is configured to provide a window glass on condition that a physical quantity larger than the reference physical quantity for the first quarter window open state is acquired by the physical quantity acquisition means when the roof is open and the quarter window is open. That a physical quantity larger than the reference physical quantity for the first quarter window closed state has been acquired by the physical quantity acquisition means when the roof is in the open state and the quarter window closed state. As a condition, it is detected that an object is caught in the window glass, and when the roof is closed and the quarter window is open, a physical quantity larger than the reference physical quantity for the second quarter window open state is acquired by the physical quantity acquisition means. On the condition that the window glass When a physical quantity larger than the second quarter window closed reference physical quantity is acquired by the physical quantity acquisition means when the roof is closed and the quarter window is closed, an object is attached to the window glass. A power window device for detecting that a pinch is sandwiched.

  According to this configuration, a common reference physical quantity for the quarter window open state (a reference physical quantity for the quarter window closed state) is not used when the roof is open and when the roof is closed. Individually set for each part state is used. Therefore, suitable pinching detection can be realized.

The electric circuit diagram which shows the structure of the power window apparatus of 1st Embodiment. Sectional drawing which shows the principal part structure of a motor. Explanatory drawing which shows the pulse signal input into a controller from a pulse sensor. The characteristic view which shows the pulse period for every position of the window glass which distinguished the roof open state and the roof closed state by the line type. The electric circuit diagram which shows the structure of the power window apparatus of 2nd Embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Power window apparatus, 50 ... Controller (physical quantity acquisition means, pinching detection means, reference | standard physical quantity update means), 52 ... Memory (reference | standard physical quantity storage means).

Claims (4)

The window glass is automatically opened and closed based on the electric driving force, the physical quantity acquisition means for acquiring the physical quantity associated with the closing operation of the window glass, and the physical quantity acquisition means that the physical quantity larger than the reference physical quantity has been acquired by the physical quantity acquisition means. As a condition, in a power window device comprising a sandwiching detection means for detecting that an object is sandwiched between window glasses,
The reference physical quantity for the roof open state associated with the roof open state in which the roof part is open is stored, and the reference for the roof closed state associated with the roof closed state in which the roof part is closed A reference physical quantity storage means for storing the physical quantity,
The pinching detection means detects that an object has been pinched in the window glass on the condition that a physical quantity larger than the reference physical quantity for the roof opening state is acquired by the physical quantity acquisition means when the roof is in the open state. In addition, when the roof is in the closed state, it is detected that an object is sandwiched between the window glasses on the condition that a physical quantity larger than the reference physical quantity for the roof closed state is acquired by the physical quantity acquisition unit. Power window device. The power window device according to claim 1, wherein
Each time the window glass closing operation is normally completed without the object being caught in the window glass in the roof open state, the physical quantity acquired by the physical quantity acquisition means with the closing operation is newly opened in the roof state. The reference physical quantity is updated and stored in the reference physical quantity storage means, and every time the window glass closing operation is normally completed without the object being caught in the window glass in the closed state, the closing is performed. Power comprising: a reference physical quantity update means for updating the physical quantity acquired by the physical quantity acquisition means as a new roof closed state reference physical quantity with operation and storing it in the reference physical quantity storage means Window device. The window glass is automatically opened and closed based on the electric driving force, the physical quantity acquisition means for acquiring the physical quantity associated with the closing operation of the window glass, and the physical quantity acquisition means that the physical quantity larger than the reference physical quantity has been acquired by the physical quantity acquisition means. As a condition, in a power window device comprising a sandwiching detection means for detecting that an object is sandwiched between window glasses,
A quarter window open state reference physical quantity associated with a quarter window open state in which the quarter window is open, and a quota associated with a quarter window closed state in which the quarter window part is closed Reference physical quantity storage means for storing the reference physical quantity for the window closed state is provided,
When the sandwiched detection means is in a quarter window open state, the fact that a physical quantity larger than the reference physical quantity for the quarter window open state has been acquired by the physical quantity acquisition means indicates that an object has been sandwiched in the window glass. And when the quarter window is closed, it is detected that a physical quantity larger than the reference physical quantity for the quarter window closed state has been acquired by the physical quantity acquisition means. A power window device. In the power window device according to claim 3,
Each time the window glass closing operation is normally completed without the object being caught in the window glass in the quarter window open state, the physical quantity acquired by the physical quantity acquisition means in accordance with the closing operation is a new quarter window. When the reference physical quantity for the open state is updated and stored in the reference physical quantity storage means, and the closing operation of the window glass is normally completed without the object being caught in the window glass in the quarter window closed state. The reference physical quantity updating means updates the physical quantity acquired by the physical quantity acquisition means with the closing operation as a new quarter window closed state reference physical quantity and stores it in the reference physical quantity storage means. A characteristic power window device.

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