JP3765451B2 - Waterproof power window device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a waterproof power window device, and in particular, when an automobile falls into water due to some cause, the waterproof power that can reliably open the door window by operating the window lowering switch. It relates to window equipment.
[0002]
[Prior art]
Generally, power window devices used in automobiles are submerged in the window up switch and window down switch when the automobile falls into the water, and it is difficult to maintain an electrical insulation state between the contact points of these switches. Even though the contacts of the window raising switch and window lowering switch are open, these contacts are electrically connected through a relatively small resistance value. Thereafter, the window lowering switch is operated. However, the window lowering operation, that is, the window opening operation cannot be performed.
[0003]
FIG. 3 is a circuit diagram showing an example of a circuit configuration of a main part of such a known power window device.
[0004]
As shown in FIG. 3, the power window device includes a window raising switch 31, a window raising relay 32 and its contact 32C, a window lowering switch 33, a window lowering relay 34 and its contact 34C, and an automatic window raising switch 35. And an automatic window lowering switch 36, a window opening / closing motor 37, a control integrated circuit (hereinafter referred to as a control IC) 38, and an in-vehicle power source 39.
[0005]
A window raising switch 31 and a window raising relay 32 are connected in series, and a window lowering switch 33 and a window lowering relay 34 are connected in series between the in-vehicle power source 39 and the grounding point. A connection point A between the window raising switch 31 and the window raising relay 32 is connected to terminals (1) and (4) of the control IC 38, and a connection point B between the window lowering switch 33 and the window lowering relay 34 is a terminal (2) of the control IC 38. , (5). The automatic window raising switch 35 has one end connected to the connection point A and the other end connected to the terminal (3) of the control IC 38. The automatic window lowering switch 36 has one end connected to the connection point B and the other end connected to the terminal of the control IC 38. Connected to (3). As for the contact 32C of the window raising relay 32, the movable contact is connected to one end of the window opening / closing motor 37, one fixed contact is connected to the vehicle-mounted power supply 39, and the other fixed contact is connected to the ground point. As for the contact 34C of the window lowering relay 34, a movable contact is connected to the other end of the window opening / closing motor 37, one fixed contact is connected to the vehicle-mounted power supply 39, and the other fixed contact is connected to the grounding point. The terminal (6) of the control IC 38 is connected to the in-vehicle power supply 39.
[0006]
The power window device having the above-described configuration generally operates as follows.
[0007]
When a driver or the like operates the window raising switch 31, the contact is closed and the window raising relay 32 is driven by the in-vehicle power supply 39. At this time, the contact 32C of the window raising relay 32 is switched, and the window opening / closing motor 37 rotates in one direction, whereby the window moves in the raising direction (window closing direction). When the operation of the window raising switch 31 is stopped, the contact is opened, the driving of the window raising relay 32 is stopped, the rotation of the window opening / closing motor 37 is also stopped, and the window is raised and stopped. On the other hand, when the window lowering switch 33 is operated, the contact is closed, and the window lowering relay 34 is driven by the in-vehicle power supply 39. At this time, the contact 34C of the window lowering relay 34 is switched, and the window opening / closing motor 37 rotates in the other direction, whereby the window moves in the lowering direction (window opening direction). When the operation of the window lowering switch 33 is stopped, the contact is opened, the driving of the window lowering relay 34 is stopped, the rotation of the window opening / closing motor 37 is stopped, and the lowering of the window is stopped.
[0008]
When a driver or the like operates the automatic window raising switch 35, the contact is closed, and the window raising switch 31 is simultaneously operated to close the contact. By closing the contact of the window raising switch 31, the window raising relay 32 is driven by the on-vehicle power source 39, and the window opening / closing motor 37 rotates in one direction as in the case where the window raising switch 31 is operated. As a result, the window moves in the upward direction (wind closing direction). Further, by closing both the contact of the window raising switch 31 and the contact of the automatic window raising switch 35, the voltage at the connection point A is supplied to the terminals (1) and (3) of the control IC 38, respectively, and responds to the supply of the voltage. Then, the voltage of the in-vehicle power supply 39 is latched and outputted to the terminal (4) of the control IC 38, and this voltage is supplied to the window raising relay 32. Therefore, even if the operation of the automatic window raising switch 35 is stopped and its contact is opened, and at the same time, the operation of the window raising switch 31 is stopped and the contact is opened, the output voltage of the terminal (4) is latched. Thus, the window raising relay 32 continues to be driven, and the window opening / closing motor 37 continues to rotate in one direction, whereby the window continues to move in the ascending direction. The movement of the window in the upward direction is continued until the window is fully closed.
[0009]
  Similarly, when the automatic window lowering switch 36 is operated, the contact is closed and the window lowering switch 33 is simultaneously operated to close the contact. Also in this case, the window opening / closing motor 37 rotates in the other direction, as in the case where the window lowering switch 33 is operated, so that the window moves in the lowering direction (window opening direction). Further, the contact of the window lowering switch 33 and the automatic window lowering switch 36By closing both of the contacts of the control IC 38,[2]as well as[3] (Indicated by circled numbers in the figure, but here in parenthesized numbers.)The voltage at the connection point B is supplied to each of the terminals of the control IC 38 in response to the supply of the voltage.[5] (Indicated by circled numbers in the figure, but in parentheses here.)The voltage of the in-vehicle power supply 39 is latched and output, and this voltage is supplied to the window lowering relay 34. For this reason, even if the operation of the automatic window lowering switch 36 is stopped and its contact is opened, and at the same time, the operation of the window lowering switch 33 is stopped and the contact is opened, the terminal[5] (Indicated by circled numbers in the figure, but in parentheses here.)Since the output voltage is latched, the window lowering relay 34 continues to be driven, and the window opening / closing motor 37 continues to rotate in the other direction, so that the window continues to move in the lowering direction. The movement of the window in the downward direction is continued until the window is fully opened.
[0010]
By the way, the known power window device has a relatively resistance value due to water between the contacts of the switches 31 and 33 when the automobile falls into the water for some reason and is immersed in the window raising switch 31 and the window lowering switch 33. The leakage resistances 31R and 33R are connected to each other and the leakage resistances of the window raising relay 32 and the window lowering relay 34 are connected to each other even though the contacts of the window raising switch 31 and the window lowering switch 33 are open. The output voltage of the in-vehicle power supply 39 is applied through 31R and 33R, and the window raising relay 32 and the window lowering relay 34 are simultaneously driven, or the window raising relay 32 and the window lowering relay 34 are simultaneously driven halfway, and as a result. The contact points 32C and 34C are switched at the same time. Or their contact points 32C, 34C is in a state not switched to any of the fixed contacts. As a result, the motor 37 is not driven to rotate. At this time, even if the driver or the like of the automobile operates the window lowering switch 33 in order to open the window, the window opening / closing motor 37 is not rotated and the window is not opened. As described above, the known power window device has a problem that when the automobile falls into the water and becomes inundated, normal window operation can no longer be performed.
[0011]
In order to solve such a problem, the present applicant has a first series circuit composed of a first switch having one circuit and two contacts, one end of which is selectively connected to an in-vehicle power source or a ground point, and a first relay, A second series circuit consisting of a second switch and a second relay, one end of which is selectively connected to an in-vehicle power source or a ground point, and a control integrated circuit are provided, and the other end of the first series circuit is a second switch and a second relay. The other end of the second series circuit is connected to the connection point of the first switch and the first relay, and the first relay is energized by switching the contact of the first switch to rotate the motor in one direction. We have already proposed a waterproof power window device that drives and raises the window, and energizes the second relay by switching the contact of the second switch to drive the motor to rotate in the other direction and lower the window. Applicant 9-33 And it filed as No. 728.
[0012]
Here, FIG. 4 is a circuit configuration diagram showing the configuration of the proposed waterproof power window device.
[0013]
As shown in FIG. 4, the waterproof power window device includes a window raising switch 41 with one circuit and two contacts, a window raising relay 42 and its contact 42C, a window lowering switch 43 with one circuit and two contacts, and a window lowering relay. 44 and its contact 44C, an automatic window raising switch 45, an automatic window lowering switch 46, a first backflow prevention diode 47, a second backflow prevention diode 48, a third backflow prevention diode 49, and a fourth backflow prevention diode. 50, a window opening / closing motor 51, a control integrated circuit (hereinafter referred to as a control IC) 52, and an in-vehicle power supply 53.
[0014]
  The movable contact of the window raising switch 41, the third backflow prevention diode 49, the first backflow prevention diode 47, and the window rise relay 42 are connected in series to constitute a first series circuit. The movable contact of the window lowering switch 43, the fourth backflow prevention diode 50, the second backflow prevention diode 48, and the window lowering relay 44 are connected in series to form a second series circuit. The window raising switch 41 has a normally closed contact connected to the ground and a normally open contact connected to the in-vehicle power supply 53. The other end of the window raising relay 42 is connected to the connection point B 1 of the movable contact of the window lowering switch 43 and the fourth backflow prevention diode 50. Wind down switch 43 is alwaysCloseThe contact is grounded and the normally open contact is connected to the in-vehicle power supply 53. The window lowering relay 44 has a window at the other end.RiseThe switch 41 is connected to the connection point A 1 of the movable contact of the switch 41 and the third backflow prevention diode 49. A connection point A2 between the third backflow prevention diode 49 and the first backflow prevention diode 47 is a terminal of the control IC 52.[1]And terminals[4] (Indicated by circled numbers in the figure, but here in parentheses.)The connection point B2 between the fourth backflow prevention diode 50 and the second backflow prevention diode 48 is a terminal of the control IC 52.[2]And terminals[5] (Indicated by circled numbers in the figure, but in parentheses here.)Connected to.
[0015]
The waterproof power window device having the above-described configuration generally operates as follows.
[0016]
When a driver or the like operates the window raising switch 41, the movable contact is switched from the normally closed contact side to the normally opened contact side, and the voltage of the in-vehicle power supply 53 is changed to the window raising switch 41 and the third backflow prevention diode 49. Then, the first backflow prevention diode 47, the window raising relay 42, and the window lowering switch 43 whose movable contact is switched to the normally closed contact side shown in the figure reach the ground point, and the window raising relay 42 is driven. At this time, the movable contact of the contact 42C of the window raising relay 42 is switched from the illustrated connection state to the reverse connection state, the voltage of the in-vehicle power supply 53 is supplied to the window opening / closing motor 51, and the window opening / closing motor 51 rotates in one direction. Then raise the window and close the window. When the operation of the window raising switch 41 is stopped, the movable contact is switched to the normally closed contact side shown in the figure, the voltage of the in-vehicle power supply 53 is blocked by the window raising switch 41, and the driving of the window raising relay 42 is stopped. Then, the rotation of the window opening / closing motor 51 is stopped, the rising of the window is stopped, and the window is held in that position.
[0017]
  On the other hand, when a driver or the like operates the window lowering switch 43, the movable contact is switched from the normally closed contact side to the normally open contact side, and the voltage of the on-vehicle power supply 53 is changed to the window lowering switch 43 and the fourth backflow prevention. The grounding point is reached via the diode 50, the second backflow prevention diode 48, the window lowering relay 44, and the window raising switch 41 whose movable contact is switched to the normally closed contact side shown in the figure, and the window lowering relay 44 is driven. At this time, the contact 4 of the window lowering relay 444In C, the movable contact is switched from the illustrated connection state to the reverse connection state, the voltage of the in-vehicle power supply 53 is supplied to the window opening / closing motor 51, the window opening / closing motor 51 rotates in the other direction, the window descends, open. When the operation of the window lowering switch 43 is stopped, the movable contact is switched to the normally closed contact side shown in the figure, the voltage of the in-vehicle power supply 53 is blocked by the window lowering switch 43, and the driving of the window lowering relay 44 is stopped. Then, the rotation of the window opening / closing motor 51 is stopped, the lowering of the window is stopped, and the window is held at that position.
[0018]
When a driver or the like operates the automatic window raising switch 45, the window raising switch 41 is simultaneously operated in conjunction with the operation, the movable contact of the automatic window raising switch 45 is closed, and the movable contact of the window raising switch 41 is always shown in the figure. Switches from the closed contact side to the normally open contact side. By switching the movable contact of the window raising switch 41, the voltage of the in-vehicle power supply 53 is applied to the window raising relay 42 via the window raising switch 41, the third backflow prevention diode 49, and the first backflow prevention diode 47, and the window raising switch 41 As in the case of operating 41 alone, the window raising relay 42 is driven, and the window opening / closing motor 51 rotates in one direction to raise the window and close the window. At this time, when the movable contact of the automatic window raising switch 45 is closed, the voltage of the in-vehicle power source 53 is applied to the terminal (3) of the control IC 52, and the control IC 52 is supplied with the voltage of the in-vehicle power source 43 supplied to the terminal (6). Is output to the terminal (1) and supplied to the window raising relay. Here, when the operation of the automatic window raising switch 45 is stopped and the operation of the interlocking window raising switch 41 is also stopped, the movable contact of the window raising switch 41 is switched from the normally open contact side to the normally closed contact side. Although the supply of the voltage of the vehicle-mounted power supply 53 to the window raising relay 42 via 41 is stopped, the supply of the voltage of the vehicle-mounted power supply 53 output from the terminal (1) of the control IC 52 is latched, and the window raising relay 42 is supplied to the window raising relay 42. Since the supply of the voltage of the in-vehicle power supply 53 is continued, the window raising relay 42 is continuously driven. For this reason, the window opening / closing motor 41 continues to rotate in one direction and continues to raise the window. The rising of the window continues until the window reaches the top of the range of movement and is fully closed.
[0019]
  Similarly, when a driver or the like operates the automatic window lowering switch 46, the window lowering switch 43 is simultaneously operated in conjunction with the operation, the movable contact of the automatic window lowering switch 46 is closed, and the movable contact of the window lowering switch 43 is illustrated. Switches from the normally closed contact side to the normally open contact side. Wind down switch43 is switched to the normally open contact side, the voltage of the in-vehicle power supply 53 is applied to the window lowering relay 44 via the window lowering switch 43, the fourth backflow preventing diode 50, and the second backflow preventing diode 48, As in the case where the lowering switch 43 is operated alone, the window lowering relay 44 is driven, the window opening / closing motor 51 rotates in the other direction, lowers the window, and opens the window. At this time, when the movable contact of the automatic window lowering switch 46 is closed, the terminal of the control IC 52[3] (Indicated by circled numbers in the figure, but here in parenthesized numbers.)The voltage of the in-vehicle power supply 53 is applied to the control IC 52, and the control IC 52[6] (Indicated by circled numbers in the figure, but here in parentheses.)The voltage of the in-vehicle power supply 53 supplied to the terminal[2] (Indicated by circled numbers in the figure, but shown here in parentheses.)Is supplied to the window lowering relay 44. Here, automatic window lowering switch 46When the operation of the window lowering switch 43 is also stopped, the movable contact of the window lowering switch 43 is switched from the normally open contact side to the normally closed contact side to the window lowering relay 44 via the window lowering switch 43. Although the supply of the voltage of the in-vehicle power supply 53 is stopped, the terminal of the control IC 52[2] (Indicated by circled numbers in the figure, but shown here in parentheses.)The supply of the voltage of the in-vehicle power supply 53 output from is latched, the supply of the voltage of the in-vehicle power supply 53 to the window lowering relay 44 is continued, and the window lowering relay44 continues to be driven. For this reason, the window opening / closing motor 51 continues to rotate in the other direction and continues to descend the window. This lowering of the window continues until the window reaches the bottom of the moving range and the window is fully opened.
[0020]
In addition, if the window is completely closed or close to being fully closed and the car falls into water for any reason, this waterproof power window device installed inside the door will also be submerged. It becomes a state. Although most of the components of the waterproof power window device are waterproofed, the window raising switch 41, the window lowering switch 43, the automatic window raising switch 45, and the automatic window lowering switch 46 are all completely waterproofed. Since it cannot be performed, water slightly enters during the inundation. When water enters the window raising switch 41 or the window lowering switch 43, as described above, a leakage resistance due to water having a relatively small resistance value is connected between the movable contact and the normally open contact. Although the window raising switch 41 and the window lowering switch 43 are normally connected at their normally closed contacts, the voltage of the in-vehicle power supply 53 applied to the window raising switch 41 and the window lowering switch 43 is a movable contact. Flows to the grounding point through the leakage resistance between the normal contact and the normally open contact and the movable contact switched to the normally closed contact, and is not applied to the window raising relay 42 and the window lowering relay 44. Therefore, the contact 42C of the window raising relay 42 and the contact 44C of the window lowering relay 44 are in the connected state shown in the figure, and the window opening / closing motor 51 is not driven to rotate.
[0021]
In such a state, when a driver or the like operates the window lowering switch 43, the contact of the window lowering switch 43 is switched from the normally closed contact side to the normally open contact side, and is connected between the normally open contact and the movable contact. The leakage resistance caused by the water becomes short-circuited by switching the contact, and at the same time, the normally-closed contact side and the movable contact change from the short-circuited state to the open state, and this time between the normally-closed contact side and the movable contact. Leakage resistance due to water comes to be connected. For this reason, the voltage of the vehicle-mounted power supply 53 is supplied to the window lowering relay 44 via the window lowering switch 43, the fourth backflow prevention diode 50, and the second backflow prevention diode 48 in a short circuit state, and the window lowering relay 44 is driven. . Then, by driving the window lowering relay 44, the contact 44C is switched from the connected state to the reverse connected state, the voltage of the in-vehicle power supply 53 is applied to the window opening / closing motor 51, and the window opening / closing motor 51 is rotationally driven in the other direction. Is done. As a result, the window is lowered and the window is opened, so that drivers and the like can escape from the opened window.
[0022]
[Problems to be solved by the invention]
  The waterproof power window device according to the above proposal can open the window by operating the window lowering switch 43 when the automobile falls into water and is immersed in the waterproof power window device. But,As described above, when the window lowering switch 43 is operated to switch the contact to the normally open contact side, the normally open contact and the movable contact are short-circuited, and the voltage of the in-vehicle power supply 53 is supplied to the window lowering relay. At the same time, the normally closed contact side and the movable contact are open, but since a leakage resistance due to water with a relatively small resistance value is connected, the leakage current flows to the grounding point through this leakage resistance. And the drive current flowing through the window lowering relay 44 is reduced by that amount, and the contact 44C of the window lowering relay 44 is not switched. As a result, the window opening / closing motor 51 is not rotationally driven and the window is not opened. There is a risk of becoming a condition.
[0023]
  As described above, the waterproof power window device according to the above proposal cannot reliably open the window even if the window lowering switch is operated when the automobile falls into water and the waterproof power window device is in a flooded state. ,It is difficult to ensure the reliability of the operation of the waterproof power window deviceQuestionHave a title.
[0024]
  The present invention solves these problems, and its purpose is to quickly detect the inundation of the waterproof power window device and immediately shift to a state capable of responding to the inundation by the detection.reliableThe object is to provide a waterproof power window device.
[0025]
[Means for Solving the Problems]
In order to achieve the above object, the waterproof power window device of the present invention is configured such that the drive end of the first relay in the first series circuit is the first terminal of the control integrated circuit and the second relay is driven in the second series circuit. An end is connected to the second terminal of the control integrated circuit, and a semiconductor detection element having a submergence detection element connected to the control terminal is connected between the power supply terminal and the ground terminal of the control integrated circuit. Means is provided for turning on the semiconductor detecting element when the submergence detecting element is submerged by flooding and outputting a power supply voltage from the first terminal and the second terminal of the control integrated circuit.
[0026]
  According to the above means, when the automobile falls into the water and is immersed in the waterproof power window device, the submergence detection element quickly detects submergence before the entire waterproof power window device is submerged. Is turned on, the power supply voltage is output from the first terminal and the second terminal of the control integrated circuit, and the power supply voltage is supplied to the first relay that raises (closes) the window and the second relay that lowers (opens) the window, respectively. Therefore, at this time, by operating the first switch for raising the window or the second switch for lowering the window, the window can be raised or lowered, and in particular, the second switch The window is lowered by the operation, and it is possible to reliably escape from the opened window.
  In order to achieve the above object, the waterproof power window device of the present invention includes a first switch, a second switch, and a submergence detection element connected to each other, and the submergence detection element detects water intrusion.SecondA control unit is provided for controlling the window to be opened by operating the switch.
  According to this means, it is possible to quickly detect water intrusion into the waterproof power window device and immediately shift to a state in which it is possible to cope with water immersion by the detection.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
  In an embodiment of the present invention, a waterproof power window device includes a first series circuit composed of a first switch and a first relay having one circuit and two contacts, one end of which is selectively connected to an in-vehicle power source or a ground point. Comprises a second series circuit consisting of a second switch and a second relay of one circuit and two contacts that are selectively connected to an on-vehicle power supply or a grounding point, an integrated circuit for control,The first switch of the first relay is not connectedThe other end is the connection point of the second switch and the second relayIs connected to the first switch of the first relayConnected to the first terminal of the control integrated circuit;The second switch of the second relay is not connectedThe other end is the connection point of the first switch and the first relayIs connected to the second switch of the second relay.Connected to the second terminal of the control integrated circuit, the first relay is energized by switching the contact of the first switch to drive the motor to rotate in one direction, the window is raised, and the second switch is switched to switch the second switch. 2 The relay is energized to rotate the motor in the other direction and lower the window. The integrated circuit for control has a submergence detection element connected to the control terminal between the power supply terminal and the ground terminal. A semiconductor detection element is connected, and when the submersion detection element detects submersion, the semiconductor detection element is turned on, and a power supply voltage is output from the first terminal and the second terminal.
[0028]
In the specific example of the embodiment of the present invention, in the waterproof power window device, the semiconductor detection element is formed of a transistor.
[0029]
In another specific example of the embodiment of the present invention, the waterproof power window device is composed of a pair of conductive metal pads in which the submergence detecting elements are arranged in an exposed state at a minute interval.
[0030]
  According to these embodiments of the present invention, between the power supply terminal and the ground terminal of the control integrated circuit, a semiconductor detection element having a submergence detection element connected to the control terminal is connected, and when the submergence detection element detects submersion. The semiconductor detection element is turned on, the power supply voltage is output from the first terminal and the second terminal, and supplied to the first relay that raises (closes) the window and the second relay that lowers (opens) the window. Therefore, when the automobile falls into the water and is immersed in the waterproof power window device, the exposed submergence detection element quickly detects submergence, immediately turns on the semiconductor detection element, and the first terminal of the control integrated circuit and Since the power supply voltage is output from the second terminal and the power supply voltage is supplied to the first relay and the second relay, the first switch for raising the window at this point is used. Alternatively, if the second switch for lowering the window is operated, the window can be raised or lowered. In particular, if the window is lowered by the operation of the second switch, it can be opened in a submerged car. It is possible to escape from the vehicle with certainty.
  In the embodiment of the present invention, the waterproof power window device includes an in-vehicle power source, a motor for opening and closing the window, and a window manually.Closing actionTell the windClosing directionThe first switch that connects the in-vehicle power supply to the motor to be driven byOpening actionTell the windOpen directionWhen the second switch that connects the in-vehicle power source to the motor so as to be driven, the submergence detection element, the first switch, the second switch, and the submergence detection element are connected to each other, and the submergence detection element detects the ingress of water InSecondAnd a control unit that controls the window to be opened by operating the switch.
  According to this embodiment of the present invention, it is possible to quickly detect water intrusion into the waterproof power window device and immediately shift to a state where it is possible to cope with water immersion by the detection.
[0031]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0032]
FIG. 1 is a circuit diagram showing the main configuration of a first embodiment of a waterproof power window device according to the present invention.
[0033]
As shown in FIG. 1, the waterproof power window device of the first embodiment includes a window raising switch (first switch) 1 composed of a switch with one circuit and two contacts, a window raising relay 2 and its contact 2C, 1 A window lowering switch (second switch) 3 comprising a circuit 2 contact switch, a window lowering relay 4 and its contact 4C, an automatic window raising switch 5, an automatic window lowering switch 6, a first backflow prevention diode 7, The second backflow prevention diode 8, the third backflow prevention diode 9, the fourth backflow prevention diode 10, the window opening / closing motor 11, the control integrated circuit (hereinafter referred to as control IC) 12, and the on-vehicle power supply (battery) 13, a pair of conductive metal pads (submergence detection element) 14, a transistor (semiconductor detection element) 15, resistors 16 and 17, And a diode 18.
[0034]
  The movable contact of the window raising switch 1, the third backflow prevention diode 9, the first backflow prevention diode 7, and the window rise relay 2 are connected in series to form a first series circuit. The movable contact of the window lowering switch 3, the fourth backflow prevention diode 10, the second backflow prevention diode 8, and the window lowering relay 4 are connected in series to form a second series circuit. In the window raising switch 1, one fixed contact (normally closed contact) is grounded, the other fixed contact (normally open contact) is connected to the in-vehicle power supply 13, and the movable contact is connected to the anode of the third backflow prevention diode 9. Is done. One end of the window raising relay 2 is connected to the cathode of the first backflow prevention diode 7, and the other end is connected to a connection point B <b> 1 between the movable contact of the window lowering switch 3 and the anode of the fourth backflow prevention diode 10. A connection point A2 between the anode of the first backflow prevention diode 7 and the cathode of the third backflow prevention diode 9 is a terminal of the control IC 12[1] (Indicated in the figure by a circled number, here it is indicated by a number with parentheses.)And terminal (first terminal)[4] (Indicated by circled numbers in the figure, but here in parentheses.)Connected to. The window lowering switch 3 has one fixed contact (normallyCloseContact) is grounded, and the other fixed contact (normally open contact) is connected to the in-vehicle power supply 13. One end of the window lowering relay 4 is connected to the cathode of the second backflow prevention diode 8, and the other end is connected to a connection point A 1 between the movable contact of the window raising switch 1 and the anode of the third backflow prevention diode 9. A connection point B2 between the anode of the second backflow prevention diode 8 and the cathode of the fourth backflow prevention diode 10 is a terminal of the control IC 12.[2] (Indicated by circled numbers in the figure, but shown here in parentheses.)And terminal (second terminal)[5] (Indicated by circled numbers in the figure, but in parentheses here.)Connected to.
[0035]
The automatic window raising switch 5 has a movable contact connected to the in-vehicle power supply 13 and a fixed contact connected to the terminal (3) of the control IC 12. The automatic window lowering switch 6 has a movable contact connected to the in-vehicle power supply 13 and a fixed contact connected to the terminal (3) of the control IC 12. As for the contact 2C of the window raising relay 2, a movable contact is connected to one end of the window opening / closing motor 11, one fixed contact is connected to the in-vehicle power supply 13, and the other fixed contact is grounded. As for the contact 4C of the window lowering relay 4, a movable contact is connected to the other end of the window opening / closing motor 11, one fixed contact is connected to the in-vehicle power supply 13, and the other fixed contact is grounded. The in-vehicle power supply 13 has a positive electrode side connected to the terminal (6) and the terminal (power supply terminal) (7) of the control IC 12, and a negative electrode side connected to the ground.
[0036]
Further, the transistor 15 has an emitter connected to the terminal (7) of the control IC 12, a collector connected to the terminal (ground terminal) (8) of the control IC 12, and a base of a pair of conductive metal pads (submergence detection element). 14 to a ground point. The resistor 16 is connected between the base and emitter of the transistor 15, and the resistor 17 and the diode 18 are connected in series between the terminal (8) of the control IC 12 and the ground.
[0037]
The waterproof power window device according to the first embodiment having the above-described configuration generally operates as follows.
[0038]
First, the operation of the automobile when it is normal (not flooded) will be described.
[0039]
When a driver or the like operates the window raising switch 1, the movable contact is switched from the normally closed contact side to the normally opened contact side, and the voltage of the on-vehicle power supply 13 is changed to the window raising switch 1 and the third backflow prevention diode 9. The first reverse current prevention diode 7, the window raising relay 2, and the window contact switch 2 whose movable contact is switched to the normally closed contact shown in the figure reach the ground point, and the window raising relay 2 is driven. At this time, at the contact 2C of the window raising relay 2, the movable contact is switched from the illustrated connection state to the reverse connection state, the voltage of the in-vehicle power supply 13 is supplied to the window opening / closing motor 11, and the window opening / closing motor 11 is moved in one direction. Rotate. As the window opening / closing motor 11 rotates in one direction, the window rises and closes the window. When the operation of the window raising switch 1 is stopped, the movable contact is switched to the illustrated normally closed contact side, and the voltage of the in-vehicle power supply 13 is blocked from being supplied to the window raising relay 2 by the window raising switch 1, and the window rises. Since the contact 2C of the relay 2 is in the illustrated connection state, the rotation of the window opening / closing motor 11 is stopped, the rising of the window is stopped, and the window is held at that position.
[0040]
On the other hand, when a driver or the like operates the window lowering switch 3, the movable contact is switched from the normally closed contact side to the normally open contact side, and the voltage of the on-vehicle power supply 13 is changed to the window lowering switch 3 and the fourth backflow prevention. The window lowering relay 4 is driven through the diode 10, the second backflow prevention diode 8, the window lowering relay 4, and the window raising switch 1 whose movable contact is switched to the normally closed contact shown in the figure. At this time, at the contact 4C of the window lowering relay 4, the movable contact is switched from the connection state shown in the figure to the reverse connection state, the voltage of the in-vehicle power supply 13 is supplied to the window opening / closing motor 11, and the window opening / closing motor 11 is moved in the other direction. Rotate. By the rotation of the window opening / closing motor 11 in the other direction, the window is lowered and the window is opened. When the operation of the window lowering switch 3 is stopped, the movable contact is switched to the normally closed contact side shown in the figure, and the voltage of the in-vehicle power supply 13 is blocked from being supplied to the window lowering relay 4 by the window lowering switch 3, and the window lowering Since the contact 4C of the relay 4 is in the connection state shown in the figure, the rotation of the window opening / closing motor 11 is stopped, the lowering of the window is stopped, and the window is held at that position.
[0041]
When a driver or the like operates the automatic window raising switch 5, the window raising switch 1 is simultaneously operated in conjunction with the operation, the movable contact of the automatic window raising switch 5 is closed, and the movable contact of the window raising switch 1 is illustrated. Switches from the normally closed contact side to the normally open contact side. When the movable contact of the window raising switch 1 is switched to the normally open contact side, the voltage of the on-vehicle power supply 13 is applied to the window raising relay 2 via the window raising switch 1, the third backflow prevention diode 9, and the first backflow prevention diode 7. As in the case of operating the window raising switch 1 alone, the window raising relay 2 is driven, the window opening / closing motor 11 rotates in one direction, and the window opening / closing motor 11 rotates in one direction to raise the window. And close the window. At this time, since the movable contact of the automatic window raising switch 5 is closed, the voltage of the in-vehicle power source 13 is applied to the terminal (3) of the control IC 12, and the control IC 12 is connected to the terminal (6) of the in-vehicle power source 13 The voltage is output to the terminal (1) and supplied to the window raising relay 2. Here, when the operation of the automatic window raising switch 5 is stopped and the operation of the window raising switch 1 associated therewith is also stopped, the movable contact of the window raising switch 1 is switched from the normally open contact side to the normally closed contact side, and the window rises. Although the supply of the voltage of the in-vehicle power supply 13 to the window raising relay 2 through the switch 1 is stopped, the supply of the voltage of the in-vehicle power supply 13 output from the terminal (1) of the control IC 12 is latched, and the window raising relay 2 Since the supply of the voltage of the in-vehicle power supply 13 to the vehicle is continued, the window raising relay 2 is continuously driven. For this reason, the window opening / closing motor 11 continues to rotate in one direction and continues to raise the window. The rising of the window continues until the window reaches the top of the movement range and becomes fully closed. In this case, the third backflow prevention diode 9 is connected to apply all the voltage of the in-vehicle power supply 13 output from the terminal (1) of the control IC 12 to the window raising relay 2.
[0042]
Similarly, when a driver or the like operates the automatic window lowering switch 6, the window lowering switch 3 is simultaneously operated in conjunction with the operation, the movable contact of the automatic window lowering switch 6 is closed, and the movable contact of the window lowering switch 3 is changed. It switches from the normally closed contact side shown to the normally open contact side. When the movable contact of the window lowering switch 3 is switched to the normally open contact side, the voltage of the in-vehicle power supply 13 is applied to the window lowering relay 4 via the window lowering switch 3, the fourth backflow prevention diode 10, and the second backflow prevention diode 8. In the same way as when the window lowering switch 3 is operated alone, the window lowering relay 4 is driven, the window opening / closing motor 11 rotates in the other direction, and the window opening / closing motor 11 rotates in the other direction to lower the window. And open the window. At this time, the movable contact of the automatic window lowering switch 6 is closed, the voltage of the in-vehicle power supply 13 is applied to the terminal (3) of the control IC 12, and the control IC 12 applies the voltage of the in-vehicle power supply 13 supplied to the terminal (6). Output to terminal {circle around (2)} and supply to window lowering relay 4. Here, when the operation of the automatic window lowering switch 6 is stopped and the operation of the window lowering switch 3 associated therewith is also stopped, the movable contact of the window lowering switch 3 is switched from the normally open contact side to the normally closed contact side, and the window lowering is performed. Although the supply of the voltage of the in-vehicle power supply 13 to the window lowering relay 4 via the switch 3 is stopped, the supply of the voltage of the in-vehicle power supply 13 output from the terminal (2) of the control IC 12 is latched and supplied to the window lowering relay 4 The on-vehicle power supply 13 is continuously supplied with the voltage, and the window lowering relay 4 is continuously driven. For this reason, the window opening / closing motor 11 continues to rotate in the other direction and continues to descend the window. The lowering of the window continues until the window reaches the bottom of the range of movement and is fully open. In this case, the fourth backflow prevention diode 10 is connected to apply all the voltage of the in-vehicle power supply 13 output from the terminal (2) of the control IC 12 to the window lowering relay 4.
[0043]
Next, the operation when the vehicle is flooded (emergency) will be described.
[0044]
If the automobile falls into the water for some reason and is submerged in the car, the waterproof power window device of the first embodiment attached to the inside of the door sequentially enters the water-immersed state. In this case, when water enters the window raising switch 1 and the window lowering switch 3, respectively, as described above, leakage resistance due to water having a relatively small resistance value is connected between the movable contact and the normally open contact. Although the window raising switch 1 and the window lowering switch 3 are both normally connected to the ground, both the window raising switch 1 and the window lowering switch 3 are connected to the window raising switch 1 and the window lowering switch 3. The voltage flows to the grounding point through the leakage resistance between the movable contact and the normally open contact and the movable contact switched to the normally closed contact, and is hardly applied to the window raising relay 2 and the window lowering relay 4. . For this reason, the contact 2C of the window raising relay 2 and the contact 4C of the window lowering relay 4 are both in the illustrated connection state, and the window opening / closing motor 11 is not driven to rotate.
[0045]
When a driver or the like operates the window lowering switch 3 in such a state, the contact of the window lowering switch 3 is switched from the normally closed contact side to the normally open contact side, and between the normally open contact and the movable contact. The leakage resistance due to the connected water becomes short-circuited by switching the contact, and at the same time, the normally-closed contact side and the movable contact are changed from the short-circuited state to the open state. The leakage resistance due to water is connected between the two. For this reason, the voltage of the in-vehicle power supply 13 is supplied to the window lowering relay 4 via the window lowering switch 3, the fourth backflow prevention diode 10, and the second backflow prevention diode 8 in a short circuit state, and the window lowering relay 4 is driven. . When the window lowering relay 4 is driven, the contact 4C is switched from the connection state shown in the figure to the reverse connection state, the voltage of the vehicle-mounted power supply 13 is applied to the window opening / closing motor 11, and the window opening / closing motor 11 is moved in the other direction. To be rotationally driven. By the rotational drive of the window opening / closing motor 11 in the other direction, the window is lowered and the window is opened, so that the driver and the like can escape from the open window of the submerged automobile.
[0046]
In addition, prior to the above-described operation, the waterproof power window device of the first embodiment has been immersed in the pair of exposed conductive metal pads 14 immediately after the inundation has started in the vehicle. Water is added, the resistance between the pair of conductive metal pads 14 is reduced, and the transistor 15 is turned on. When the transistor 15 is turned on, the power supply voltage of the in-vehicle power supply 13 is applied to the terminal (8) of the control IC 12, and thereby the power supply voltage is output to the terminals (4) and (5) of the control IC 12, and the window rise relay 2 and the window lowering relay 4 are supplied. At this time, the window raising relay 2 and the window lowering relay 4 are both driven, and their contact points 2C and 4C are switched to a connection state opposite to the connection state shown in the figure, but the voltage of the in-vehicle power supply 13 is applied to the window opening / closing motor 11. Therefore, the window opening / closing motor 11 does not rotate and the window does not open / close.
[0047]
Here, when a driver or the like operates the window lowering switch 3, the contact of the window lowering switch 3 is switched from the normally closed contact side to the normally open contact side, and the voltage of the in-vehicle power supply 13 is applied to the other end of the window raising relay 2. As a result, the drive of the window raising relay 2 is stopped, and the contact 2C is switched to the illustrated connection state. At this time, the window lowering relay 4 is still in the driving state, and the contact 4C is switched to the connection state opposite to the connection state shown in the figure, so that the voltage of the in-vehicle power supply 13 is applied to the window opening / closing motor 11, and the window The opening / closing motor 11 is rotationally driven in the other direction. By the rotational drive of the window opening / closing motor 11 in the other direction, the window is lowered and the window is opened, so that the driver and the like can escape from the open window of the submerged automobile.
[0048]
In this case, if the driver or the like operates the window raising switch 1 instead of operating the window lowering switch 3, the window can be closed by the same function as that described above.
[0049]
As described above, according to the waterproof power window device of the first embodiment, immediately after the automobile falls into water and the waterproof power window device is immersed in water, that is, water enters the window lowering switch 3. Previously, the detection of water intrusion by the pair of conductive metal pads 14 was quickly detected, and if the window lowering switch 3 is operated after the detection, the window can be automatically opened. In addition to the function of the waterproof power window device, safety can be further improved.
[0050]
Next, FIG. 2 is a circuit configuration diagram showing the main configuration of a second embodiment of the waterproof power window device according to the present invention.
[0051]
In FIG. 2, the same components as those illustrated in FIG.
[0052]
In the second embodiment, the automatic window raising switch 5 and the automatic window lowering switch 6 are omitted from the first embodiment, except that the automatic window raising switch 5 and the automatic window lowering switch 6 are not connected. The configuration is the same as that of the first embodiment. For this reason, further description of the configuration of the second embodiment is omitted.
[0053]
Further, regarding the normal operation (non-water-immersion) operation of the second embodiment, when the window is raised and lowered, an automatic operation using the automatic window raising switch 5 and the automatic window lowering switch 6 is performed. Except for the fact that it cannot be performed, it is almost the same as the normal operation of the first embodiment. For this reason, further description of the normal operation of the second embodiment is omitted.
[0054]
Furthermore, the operation when the vehicle is submerged in the automobile of the second embodiment (emergency) is exactly the same as the operation of the emergency of the first embodiment, and the operational effects of the second embodiment are as follows: Since the operation at the time of emergency is the same as the operation of the first embodiment, it is the same as the operational effect of the first embodiment. For this reason, further description of the operation in the emergency of the second embodiment and the operational effects of the second embodiment will be omitted.
[0055]
In each of the above embodiments, the submergence detection element is a pair of conductive metal pads 14 and the semiconductor detection element is a transistor 15. However, the submergence detection element and the semiconductor detection element according to the present invention are a pair. Of course, the present invention is not limited to the case of the conductive metal pad or transistor, and it is a matter of course that an equivalent function can be exhibited even if other elements having the same function are used.
[0056]
  As described above, according to the present invention, between the power supply terminal and the ground terminal of the control integrated circuit, the semiconductor detection element in which the submersion detection element is connected to the control terminal is connected. Since the detection element is turned on and the power supply voltage is output from the first terminal and the second terminal, the first relay that raises (closes) the window and the second relay that lowers (opens) the window are supplied. When the automobile falls into water and is immersed in the waterproof power window device, the exposed submergence detection element quickly detects submergence, immediately turns on the semiconductor detection element, the first terminal of the control integrated circuit and the second terminal Since the power supply voltage is output from the two terminals and the power supply voltage is supplied to the first relay and the second relay, the first switch or window for raising the window at this point is used. If the second switch for lowering the window is operated, the window can be raised or lowered. In particular, if the window is lowered by operating the second switch, the window is opened in a submerged car. As a result, it is possible to surely escape from the window to the outside of the vehicle, and the safety can be further improved as compared with the proposed waterproof power window device of this type.
[Brief description of the drawings]
FIG. 1 is a circuit diagram showing a main configuration of a first embodiment of a waterproof power window device according to the present invention.
FIG. 2 is a circuit diagram showing a main configuration of a second embodiment of the waterproof power window device according to the present invention.
FIG. 3 is a circuit diagram showing an example of a configuration of a known power window device.
FIG. 4 is a circuit diagram showing an example of a configuration of a main part of a previously proposed waterproof power window device.
[Explanation of symbols]
1 Window lift switch (1st switch)
2 Wind rising relay
Contact of 2C window raising relay 2
3 Window lowering switch (second switch)
4 Wind lowering relay
Contact point of 4C window lowering relay 4
5 Automatic window lift switch
6 Automatic window lowering switch
7 First backflow prevention diode
8 Second backflow prevention diode
9 Third backflow prevention diode
10 4th backflow prevention diode
11 Wind open / close motor
12 Integrated circuit for control (control IC)
13 On-vehicle power supply (battery)
14 A pair of conductive metal pads (submergence detection element)
15 Transistor (Semiconductor sensing element)
16, 17 resistance
18 Diode

Claims (4)

  A first series circuit consisting of a first switch with one circuit and two contacts, one end of which is selectively connected to an in-vehicle power source or a ground point, and a first relay, and one end selectively connected to the in-vehicle power source or the ground point A second series circuit composed of a second switch having a circuit 2 contact and a second relay, and a control integrated circuit, the other end of the first relay not connected to the first switch being the second switch and the second relay; One end of the first relay connected to the connection point of the two relays is connected to the first terminal of the control integrated circuit, and the second switch of the second relay is connected. The other end of the second relay connected to the connection point of the first switch and the first relay, and the other end of the second relay connected to the second terminal of the control integrated circuit, 1 switch contact cut The first relay is energized to rotate the motor in one direction to raise the window, and the second switch is energized by switching the contact of the second switch to rotate the motor in the other direction. The waterproof power window device for lowering the window, wherein the control integrated circuit is connected between a power supply terminal and a ground terminal by a semiconductor detection element having a submersion detection element connected to a control terminal, A waterproof power window device, wherein when the detection element is submerged, the semiconductor detection element is turned on and a power supply voltage is output from the first terminal and the second terminal.   The waterproof power window device according to claim 1, wherein the semiconductor detection element is a transistor.   The waterproof power window device according to claim 1 or 2, wherein the submergence detecting element is a pair of conductive metal pads arranged in an exposed state at a minute interval. And onboard power supply, a motor for opening and closing the window, a first switch for connecting the vehicle power supply to the motor to be driven to the window and instructs the closing operation of the window manually in the closing direction, the manually window A second switch for connecting the in-vehicle power supply to the motor so that the window is driven in the opening direction by instructing an opening operation , a submergence detection element, the first switch, the second switch, and the submergence detection element And a control unit connected to each other, wherein the control unit controls the opening of the window by the operation of the second switch when the submergence detecting element detects the ingress of water. Waterproof power window device featuring.

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