JP2018013025A - Opening and closing member driving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an opening and closing member driving device capable of accurately driving an opening and closing member in a reverse direction by a set amount for a long time.SOLUTION: A power window device 1 includes a motor M for opening and closing window glass WG, a rotation detection sensor 2 which can detect a driving amount of the motor M, and a driving amount setting section 6 for setting the driving amount of the motor based on a driving history (a cumulative total of the drive times) of the motor M when the window glass WG is driven to a direction opposite to the previous time by a set amount.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an opening / closing member driving device.

  Conventionally, as an opening / closing member drive device, a pinch prevention function that determines the occurrence of foreign object pinching by the window glass during the closing operation from the rotational speed or current value of the motor, and stops the motor and reverses (reverses) the motor when it occurs. (For example, refer to Patent Document 1).

JP 2014-167201 A

  By the way, the opening / closing member driving device as described above includes a rotation detection sensor such as a Hall IC capable of outputting a pulse signal synchronized with the rotation of the motor, and when it is determined that a foreign object is caught, a preset pulse is set. The motor is driven in the opposite direction by the number of edges. The number of pulse edges set in such a case is the reversal of the window glass due to the aging of the transmission member such as a regulator or gear that drives and connects the window glass and the motor (such as loosening of the wire and gear backlash). A large value is set in advance in consideration of a decrease in the amount. Therefore, in the state before aging deterioration, there is a problem that the window glass is driven unnecessarily larger than the minimum reversal amount that is originally required.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an opening / closing member driving device that can reversely drive the opening / closing member by a set amount with high accuracy for a long period of time. .

  An opening / closing member driving device that solves the above-described problems is a motor for opening / closing an opening / closing member, a drive detection sensor capable of detecting a driving amount of the motor, and driving the opening / closing member by a set amount in a direction opposite to the previous time. A drive amount setting unit that sets the drive amount of the motor based on the drive history of the motor.

  According to this configuration, when the opening / closing member is driven by a set amount in the direction opposite to the previous time, the driving amount setting unit that sets the motor driving amount based on the driving history of the motor is provided. The motor can be driven in consideration of a decrease in the amount of reversal of the opening / closing member due to deterioration over time of a transmission member such as a regulator or a gear that is drivingly connected. Therefore, it is possible to reversely drive the opening / closing member by a set amount with high accuracy for a long period of time.

  When the opening / closing member driving device compares the driving information according to the driving state of the motor with a threshold value set before that and determines that a foreign object is caught or caught, the opening / closing member is It is preferable to provide a controller that drives the set amount in the direction opposite to the previous time.

  According to this configuration, when it is determined that foreign matter is caught or caught by comparing the driving information according to the driving state of the motor with a threshold value set before that, the opening / closing member is moved in the opposite direction to the previous time. Since the control unit that drives only the set amount is provided, for example, when pinching occurs, it is possible to suppress unnecessary large reversal while maintaining the minimum reversal amount.

In the opening / closing member driving device, it is preferable that the driving amount setting unit sets the driving amount of the motor based on a cumulative number of driving times that is a driving history.
According to this configuration, since the drive amount setting unit sets the drive amount of the motor based on the cumulative drive count that is the drive history, for example, the drive amount setting unit can manage a smaller number than when setting based on the cumulative drive amount. The drive amount of the motor can be set with a simple configuration.

In the opening / closing member driving device, it is preferable that the driving amount setting unit sets the driving amount of the motor based on a cumulative driving amount that is a driving history.
According to this configuration, since the drive amount setting unit sets the drive amount of the motor based on the cumulative drive amount that is the drive history, for example, the degree of deterioration is further reduced as compared with the case where it is set based on the cumulative drive count. It can be estimated accurately, and can be driven reversely by an amount close to the set amount with higher accuracy.

  In the opening / closing member driving device of the present invention, the opening / closing member can be driven in reverse by a set amount with high accuracy for a long period of time.

The schematic block diagram of the power window apparatus in one Embodiment. The flowchart for demonstrating the process of the drive amount setting part in one Embodiment. The flowchart for demonstrating the process of the drive amount setting part in a modification.

Hereinafter, an embodiment of a power window device will be described with reference to FIGS. 1 and 2.
As shown in FIG. 1, a window glass WG as an opening / closing member is provided on the vehicle door D so as to be movable up and down, and the window glass WG is provided with a loop-like wire (regulator) W as a transmission member. The motor M in the power window device 1 as the opening / closing member driving device is drivingly connected.

  The power window device 1 includes a rotation detection sensor 2 as a drive detection sensor such as a Hall IC that detects the rotation of the motor M, a signal from the rotation detection sensor 2, a signal from the operation switch 3, and the like. And a control unit 5 that supplies power to the motor M. That is, the rotation detection sensor 2 outputs a pulse signal corresponding to the rotation (drive amount) of the motor M to the control unit 5. The control unit 5 includes a microcomputer, a drive circuit, and the like, performs various controls while grasping the position and speed of the window glass WG based on an input pulse signal, and drives and controls the motor M.

  More specifically, when the operation switch 3 provided on the vehicle door D is operated, the control unit 5 drives and controls the motor M to open / close (move up and down) the window glass WG according to the operation.

  Further, the control unit 5 calculates a rotation speed as drive information based on a pulse signal from the rotation detection sensor 2 indicating the drive status of the motor M, and calculates the rotation speed and a threshold value set before that. In comparison, an abnormality determination process is performed to determine the occurrence of pinching of foreign matter. When it is determined that pinching has occurred, the motor M is stopped and reversely rotated (that is, reversely driven). At this time, the control unit 5 drives the window glass WG by a set amount in the opening direction opposite to the previous time. For example, the set amount of the present embodiment is set to 130 mm or more as will be described later.

  When the control unit 5 drives the window glass WG in a direction opposite to the previous time (in this embodiment, in the opening direction) by a set amount, the driving amount of the motor M (pulse to be driven) is based on the driving history of the motor M. A drive amount setting unit 6 for setting the number of edges) is provided. The drive amount setting unit 6 of the present embodiment sets the drive amount of the motor M based on the cumulative number of times of driving (the cumulative number of times the motor M has been driven) as the driving history. In addition, the drive amount setting unit 6 of the present embodiment proportionally increases the drive amount of the motor M every time the cumulative number of times of drive history is equal to or greater than a preset fixed amount (20,000 in the present embodiment). And increase it.

  Specifically, as shown in FIG. 2, when the control unit 5 (drive amount setting unit 6) determines that pinching has occurred, the motor 5 is operated to operate the window glass WG after performing the processing in step S1 and subsequent steps. The power supply to M is started.

  That is, in step S1, the drive amount setting unit 6 determines whether or not the cumulative number of times of driving is N or more. If it is determined that it is less than N times, the drive amount setting unit 6 proceeds to step S2 and sets the drive amount of the motor M. Is set to a preset reference value X. In the present embodiment, N times is set to 20,000 times, and the reference value X is set to 450 times.

  In step S1, if the driving amount setting unit 6 determines that the cumulative number of driving times is N or more, the driving amount setting unit 6 proceeds to step S3 and determines whether or not the total number of driving times is 2N times (40,000 times) or more. If it is determined that it is less than 2N times, the process proceeds to step S4, where the number of pulse edges as the driving amount of the motor M is set by adding a preset additional value α to the reference value X. The additional value α is set to 50 times in the present embodiment. Therefore, in this case, the drive amount setting unit 6 sets the number of pulse edges to (X + α =) 500 times.

  In step S3, when the driving amount setting unit 6 determines that the cumulative number of driving times is 2N times or more, the driving amount setting unit 6 proceeds to step S5 and determines whether or not the cumulative number of driving times is 3N times (60,000 times) or more. If it is determined that it is less than 3N times, the process proceeds to step S6, where the number of pulse edges as the driving amount of the motor M is set by adding twice the preset additional value α to the reference value X. Therefore, in this case, the drive amount setting unit 6 sets the number of pulse edges to (X + 2α =) 550 times.

  In step S5, when the driving amount setting unit 6 determines that the cumulative driving number is 3N or more, the driving amount setting unit 6 proceeds to step S7 and presets the number of pulse edges as the driving amount of the motor M to the reference value X. Is set by adding 3 times the additional value α. Therefore, in this case, the drive amount setting unit 6 sets the number of pulse edges to (X + 3α =) 600 times.

  Note that the number of pulse edges set as described above is a value derived in advance based on experimental results and the like. If the motor M is driven so that the number of pulse edges is counted, the window glass WG It is a value that is 130 mm or more and is slightly over 130 mm (in the opening direction).

  For example, the number of pulse edges as described above is set based on the following experimental results. For example, when the cumulative number of driving times is less than 20,000 times, the transmission member is less deteriorated. Therefore, if the motor M is driven until the number of pulse edges reaches 450 times, the window glass WG is 130 mm or more and 130 mm. Driven slightly beyond. When the cumulative number of driving times is 20,000 times or more and less than 40,000 times, if the motor M is driven until the number of pulse edges reaches 500 times, the window glass WG is 130 mm or more and slightly exceeds 130 mm. Only driven. Further, when the cumulative number of driving times is 40,000 times or more and less than 60,000 times, if the motor M is driven until the number of pulse edges becomes 550 times, the window glass WG is 130 mm or more and slightly exceeds 130 mm. Only driven. Further, when the cumulative number of driving times is 60,000 times or more, the deterioration of the transmission member is maximized, and the decrease of the reversal amount due to aging is maximized, and the motor M is driven until the number of pulse edges reaches 600 times. The window glass WG is driven to be 130 mm or more and slightly exceeding 130 mm. That is, based on such experimental results and the like, the drive amount setting unit 6 sets the optimum drive amount (pulse edge number) of the motor M with respect to the cumulative number of times of driving.

Next, the operation of the power window device 1 configured as described above will be described.
For example, if a foreign object is caught between the window frame and the window glass WG during the closing operation of the window glass WG, the controller 5 determines that the jamming has occurred. Then, the control unit 5 drives the window glass WG by a set amount (130 mm or more in the present embodiment) in the opening direction.

  At this time, for example, if the cumulative number of driving times of the motor M is 10,000, the number of pulse edges as the driving amount of the motor M is set to 450 times by the driving amount setting unit 6, and the motor M is detected by the rotation detection sensor 2. It is driven until the number of detected pulse edges reaches 450 times. Further, for example, if the cumulative number of driving times of the motor M is 30,000 times, the driving amount setting unit 6 sets the number of pulse edges as the driving amount of the motor M to 500 times, and the motor M has the number of pulse edges of 500 times. It is driven until Further, for example, when the cumulative number of driving times of the motor M is 50,000 times, the driving amount setting unit 6 sets the number of pulse edges as the driving amount of the motor M to 550 times, and the motor M has the number of pulse edges of 550 times. It is driven until Further, for example, when the cumulative number of driving times of the motor M is 70,000 times, the driving amount setting unit 6 sets the number of pulse edges as the driving amount of the motor M to 600 times, and the motor M has the number of pulse edges of 600 times. It is driven until As a result, the window glass WG is driven by 130 mm or more and slightly exceeding 130 mm regardless of the deterioration over time.

Next, the characteristic effects of the above embodiment will be described below.
(1) When the window glass WG is driven by a set amount in the direction opposite to the previous time, a drive amount setting unit that sets the drive amount (number of pulse edges) of the motor M based on the drive history of the motor M (cumulative drive count) 6 is provided. Therefore, for example, the amount of reversal of the window glass WG is reduced due to the aging of the transmission member such as the wire W (regulator) and the gear that drives and connects the window glass WG and the motor M (such as loosening of the wire W and gear backlash) The motor M can be driven in consideration of the above. Therefore, the window glass WG can be driven in reverse by a set amount with high accuracy for a long period of time.

  (2) When the driving information (rotational speed) according to the driving state of the motor M is compared with the threshold value set before that and it is determined that the foreign object is caught, the window glass WG is opposite to the previous one. A control unit 5 is provided for driving in the direction (opening direction) by a set amount. Therefore, for example, when pinching occurs, it is possible to suppress unnecessary large reversal while maintaining a minimum reversal amount (a set amount, which is 130 mm or more in the present embodiment).

  (3) Since the drive amount setting unit 6 sets the drive amount of the motor M based on the cumulative drive count that is the drive history, for example, based on the cumulative drive amount (the cumulative number of pulse edges at which the motor M is driven). It is sufficient to manage a small number as compared with the case of setting the motor M, and the driving amount of the motor M can be set with a simple configuration.

  (4) The drive amount setting unit 6 proportionally increases the drive amount of the motor M every time the drive history (cumulative drive count) is a multiple of a predetermined amount (N times and 20,000 times). In order to increase, the driving amount of the motor M can be set with a simple program.

The above embodiment may be modified as follows.
In the above embodiment, the drive amount setting unit 6 sets the drive amount of the motor M based on the cumulative number of times of drive history, but is not limited to this, and is set based on another drive history. Also good. For example, the drive amount setting unit 6 may set the drive amount of the motor M based on the cumulative drive amount (the cumulative number of pulse edges at which the motor M is driven) that is the drive history. In this way, for example, the degree of deterioration can be estimated more accurately than in the case of setting based on the cumulative number of driving times, and the window glass WG can be driven in reverse by an amount close to the set amount with higher accuracy. it can.

  FIG. 3 is a flowchart in the case where the drive amount setting unit 6 sets the drive amount of the motor M based on the cumulative drive amount that is the drive history (the cumulative number of pulse edges that the motor M has been driven). Show. As shown in the figure, when the control unit 5 (driving amount setting unit 6) determines that the pinching has occurred, the control unit 5 (the drive amount setting unit 6) performs the processing of step S11 and the subsequent steps, and then supplies power to the motor M to operate the window glass WG. Start supplying.

  That is, in step S11, the drive amount setting unit 6 determines whether or not the cumulative drive amount (cumulative pulse edge number) is A times or more, and if it is determined that it is less than A times, the process proceeds to step S12. The number of pulse edges as a drive amount (reverse drive amount) of the motor M is set to a preset reference value X.

  In step S11, when the drive amount setting unit 6 determines that the cumulative drive amount is A times or more, the drive amount setting unit 6 proceeds to step S13 and determines whether the cumulative drive amount is B times or more. This comparison value “B” is set to a value larger than the comparison value “A” in step S11. If the drive amount setting unit 6 determines that the cumulative drive amount is less than B times, the process proceeds to step S14 where the pulse edge number as the drive amount (reverse drive amount) of the motor M is preset to the reference value X. Set by adding the additional value α.

  In step S13, when the driving amount setting unit 6 determines that the cumulative driving amount is B times or more, the driving amount setting unit 6 proceeds to step S15 and determines whether the cumulative driving amount is C times or more. The comparison value “C” is set to a value larger than the comparison value “B” in step S13. If the drive amount setting unit 6 determines that the cumulative drive amount is less than C times, the process proceeds to step S16, where the pulse edge number as the drive amount (reverse drive amount) of the motor M is preset to the reference value X. Set by adding twice the additional value α.

  In step S15, when the driving amount setting unit 6 determines that the cumulative driving amount is C times or more, the driving amount setting unit 6 proceeds to step S17 and sets the number of pulse edges as the driving amount (reverse driving amount) of the motor M as a reference value. X is set by adding 3 times the preset additional value α.

  The values (reference value X and additional value α) used for setting the reverse drive amount of the motor M by the drive amount setting unit 6 are optimum for the cumulative drive amount (A, B, C) as in the above embodiment. It is desirable that the value is a value derived in advance based on experimental results or the like. Further, as a setting pattern of the above-described comparison values (A, B, C), for example, similarly to the above-described embodiment, B may be set to twice the value of A and C may be set to a value three times that of A. Alternatively, other setting patterns may be used.

  In the above embodiment, the drive amount setting unit 6 sets the drive amount of the motor M every time the drive history (cumulative drive number) is a multiple of a predetermined amount (N times and 20,000 times). Although it is assumed to increase in proportion, it is not limited to this and may be set in another pattern. For example, a map of the drive amount (pulse edge number, etc.) of the motor M with respect to the drive history (cumulative drive count, cumulative drive amount, etc.) may be created from experimental results and set using the map.

  In the above embodiment, the control unit 5 has a function of driving the window glass WG by a set amount in the direction opposite to the previous time (in the opening direction) when it is determined that the foreign object has been caught. If it is determined that foreign matter has been involved during the opening operation, the window glass WG may have a function of driving a set amount in a direction opposite to the previous time (in the closing direction).

  In the above embodiment, the driving information corresponding to the driving state of the motor M used for the abnormality determination process is the rotation speed, but is not limited to this, and may be changed to a current value or the like. That is, the current value may be compared with a threshold value to determine whether foreign matter is caught (or foreign matter is involved).

  In the above-described embodiment, the power window device 1 is embodied as the opening / closing member driving device. However, the present invention is not limited to this, and an opening / closing member driving device that drives and controls the opening / closing members other than the window glass WG may be used.

The technical idea that can be grasped from the above embodiment will be described below.
(A) In the opening / closing member drive device according to claim 3 or 4, the drive amount setting unit proportionally increases the drive amount of the motor every time the drive history becomes a multiple of a predetermined fixed amount. The opening / closing member driving device is characterized by being increased.

  According to this configuration, the drive amount setting unit increases the drive amount of the motor proportionally every time the drive history becomes a multiple of a predetermined fixed amount. Can be set.

  DESCRIPTION OF SYMBOLS 1 ... Power window apparatus (opening-closing member drive device), 2 ... Rotation detection sensor (drive detection sensor), 5 ... Control part, 6 ... Drive amount setting part, M ... Motor, WG ... Window glass (opening-closing member).

Claims (4)

A motor for opening and closing the opening and closing member;
A drive detection sensor capable of detecting the drive amount of the motor;
An opening / closing member driving device comprising: a driving amount setting unit that sets the driving amount of the motor based on a driving history of the motor when the opening / closing member is driven by a set amount in a direction opposite to the previous time. . The opening / closing member driving device according to claim 1,
When the driving information according to the driving status of the motor is compared with a threshold value set before that and it is determined that a foreign object is caught or caught, the opening / closing member is set in the opposite direction to the previous time. An opening / closing member driving device comprising a control unit for driving only the opening / closing member. The opening / closing member driving device according to claim 1 or 2,
The driving amount setting unit sets the driving amount of the motor based on the cumulative number of driving times that is a driving history. The opening / closing member driving device according to claim 1 or 2,
The drive amount setting unit sets the drive amount of the motor based on a cumulative drive amount that is a drive history.

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