JP2005075039A - Wiper control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wiper control device capable of preventing trouble wherein a wiper blade at the front passenger seat side comes into the visual field of a driver. <P>SOLUTION: The wiper blade 4a at the driver's seat side and the wiper blade 6a at the front-seat passenger are reciprocated from predetermined stop positions to previously determined inversion positions Q1, Q2 respectively to carry out wiping at wiping operation of the wiper blades 4a, 6a when a traveling speed of the vehicle is less than a predetermined speed. At least, the inversion position of the wiper blade 6a at the front passenger seat side is changed to a position Q3 at the stop position side than the previously predetermined inversion position at the wiper wiping operation when the traveling speed of the vehicle becomes a predetermined speed or faster. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a wiper control device that controls a driving and wiping range of a wiper device mounted on a vehicle.

In a wiper device that wipes the front windshield (windshield) of the vehicle by reciprocating the driver side and passenger side from the stop position (storage position) to the reverse position and wiping, the passenger side wiper is usually moved from the stop position. When wiping up to the reversal position, the wiping range of the passenger side wiper and the wiping range of the driver side wiper are overlapped in order to wipe off the water accumulated at the reversal position with the driver side wiper (passenger seat) The side wiper is set to reverse within the wiper range of the driver side wiper. (For example, refer to JP-A-11-348734)
Further, in recent years, it is necessary to increase the wiper wiping area with the increase in the size of the front windshield of the vehicle, and the wiper blade and the wiper arm are currently increased in size.

As a result, the wiper blade and the wiper arm on the passenger seat side enter the driver's field of view, which causes a problem that it is troublesome for the driver.
JP 11-348734 A

  As described above, in recent years, the front windshield is becoming larger, and when the wiper wiping area is increased accordingly, there arises a problem that the wiper blade and the wiper arm on the passenger side enter the driver's view. It was.

  The present invention has been made to solve such a conventional problem, and an object of the present invention is to prevent troublesomeness caused by the wiper blade and the wiper arm on the passenger side entering the driver's field of view. An object of the present invention is to provide a wiper control device that can perform the above-described operation.

  In order to achieve the above object, the present invention provides a wiper control that controls the wiping operation of the passenger side wiper blade and the driver side wiper blade that reciprocates from the stop position to the reversal position on the front windshield. At the time of wiping operation with the wiper blade when the vehicle traveling speed is less than the predetermined speed, the driver side wiper blade and the passenger side wiper blade reciprocate from a predetermined stop position to a predetermined reverse position respectively. When the wiper wiping operation is performed when the driving speed of the vehicle exceeds a predetermined speed, the reverse position of at least the passenger side wiper blade is changed from the predetermined reverse position to the stop position. It is characterized by that.

  In the wiper control device according to the present invention, when the traveling speed of the vehicle is less than a predetermined speed, the reverse position of the wiper blade on the passenger seat side is set to the preset reverse position. When the wiper is wiped to the reverse position, the wiper blade on the driver's seat side surely removes the water accumulated at the reverse position, so that the problem of water dripping on the front windshield in front of the driving can be solved.

  In addition, when the traveling speed of the vehicle is equal to or higher than the predetermined speed, the reverse position of the wiper blade on the passenger seat side is changed to the stop position side, so that the wiper blade on the passenger seat side enters the driver's view. This can prevent the forward visibility. At this time, the water accumulated in the reverse position of the wiper blade on the passenger seat side cannot be removed by the wiper blade on the driver seat side, but the vehicle traveling speed is higher than the predetermined speed. Water does not drip on the shield, making you feel uncomfortable.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory diagram illustrating a configuration of a wiper mechanism to be controlled by a wiper control device according to an embodiment of the present invention. As shown in the figure, the wiper mechanism includes a wiper motor 2 fixed to a support member 35, a crank section in which one end is connected to the output shaft of the wiper motor 2 and is driven to rotate as the wiper motor 2 rotates. And a link 8 and a link 11 which are connected to the other end of the motor arm 3 and convert the rotation operation of the motor arm 3 into a reciprocating operation.

  Further, one end is connected to the tip of the link 8, the other end is connected to the pivot shaft 7 a of the support arm 31 on the passenger seat side, and one end is connected to the link 11. A pivot arm 5 is connected to the front end, and the other end is connected to the rotating shaft 5a on the driver's seat side of the support arm 31.

  Therefore, when the motor arm 3 is rotationally driven and the links 8 and 11 are reciprocated, the pivot arms 7 and 5 are swung within the ranges of the angles α and β shown in the drawing, respectively, and the rotation shafts 7a and 5a are moved accordingly. It rotates.

  FIG. 2A is an explanatory diagram showing the front windshield 32 of the vehicle when the vehicle is stopped and the wiper blade wiping range on the front windshield 32. The rotating shaft 7a shown in FIG. The wiper arm 6 is connected to the end of the wiper arm 6 connected to the wiper blade 6a on the side, and the rotary shaft 5a is connected to the end of the wiper arm 4 connected to the wiper blade 4a on the driver's seat side. Accordingly, as the pivot arms 7 and 5 swing, the front windshield 32 is wiped by the wiper blade 6a on the passenger seat side and the wiper blade 4a on the driver seat side. The wiper blade 6a on the passenger seat side reciprocates between the stop position P1 and the reverse position Q1, and the wiper blade 4a on the driver seat side reciprocates between the stop position P2 and the reverse position Q2.

  3A and 3B are explanatory views showing the detailed configuration of the motor arm 3 and the links 8 and 11 connected thereto, wherein FIG. 3A is a plan view, FIG. 3B is an AA cross section, and FIG. B sections are shown respectively.

  As shown in the figure, the motor arm 3 has an oval shape having a cross section bent into a crank shape, and a rotating shaft 3 a connected to the output shaft of the wiper motor 2 is provided on one end side. A rotation shaft 10 a is provided at the other end of the motor arm 3, and a ball joint 12 a is provided at an outer peripheral portion of the rotation shaft 10 a at a connection portion with the link 8. In addition, a ball joint 12b is provided on the outer peripheral portion of the rotating shaft 10a at the connecting portion with the link 11.

  The ball joint 12a is provided so as to be rotatable with respect to the rotating shaft 10a. As shown in FIG. 3B, the ball joint 12a has a left radial dimension r1 larger than a right radial dimension r2. ing. That is, r1> r2, and the ball joint 12a has a configuration that is eccentric by (r1-r2). The ball joint 12a is covered with a joint cover 13a that can rotate with respect to the ball joint 12a.

  A concave portion 33 into which the link 8 is fitted is formed on the outer peripheral surface of the joint cover 13a, and the link 8 is fitted and fixed to the concave portion 33 of the joint cover 13a.

  The ball joint 12b is attached to the rotating shaft 10a, and the ball joint 12b may be rotatable with respect to the rotating shaft 10a or may be fixed. The ball joint 12b is covered with a joint cover 13b that can rotate with respect to the ball joint 12b.

  A recess 36 into which the link 11 is fitted is provided on the outer peripheral surface of the joint cover 13b, and the link 11 is fitted and fixed to the recess 36 of the joint cover 13b.

  Further, a groove portion 14 into which a stopper 34 erected and fixed to the motor arm 3 is inserted is provided over a half of the outer periphery of the bottom portion of the ball joint 12a.

  When the motor arm 3 is rotated in the clockwise direction as shown in FIG. 3A, the ball joint 12a is stopped counterclockwise with respect to the rotation shaft 10a by sliding resistance with the joint cover 13a. It rotates until 34 reaches | attains the edge part of the groove part 14, ie, it will be in the state shown to Fig.3 (a). Therefore, when the motor arm 3 rotates clockwise, the distance from the center of the rotation shaft 3a of the motor arm 3 to the center of the joint cover 13a is L2.

  On the other hand, as shown in FIG. 4, when the motor arm 3 rotates counterclockwise, the ball joint 12a rotates clockwise with respect to the rotation shaft 10a due to sliding resistance with the joint cover 13a, and the stopper 34 has a groove. It rotates until it reaches the end of 14, that is, until the state shown in FIG. Therefore, when the motor arm 3 rotates counterclockwise, the distance from the center of the rotation shaft 3a of the motor arm 3 to the center of rotation of the joint cover 13a is L1 (L1 <L2).

  That is, by changing the rotation direction of the motor arm 3, the distance from the center of the rotation shaft 3a of the motor arm 3 to the rotation center of the joint cover 13a can be changed. The reverse position of the wiper blade 6a on the side, that is, the position of the symbol Q1 shown in FIG. 2A can be changed. Specifically, when the motor arm 3 is rotated in the clockwise direction, as shown in FIG. 2A, the reverse position of the wiper blade 6a on the passenger seat side is Q1, and the motor arm 3 is rotated counterclockwise. In the case of rotation in the direction, as shown in FIG. 4B, the rotation is reversed at a position Q3 slightly before Q1 (position close to the stop position P1).

  In the present embodiment, the front visibility is improved by attaching the reverse position of the wiper blade 6a on the passenger seat side according to the running state of the vehicle or various conditions, and the front windshield 32 is attached to the front windshield 32. It effectively removes water.

  FIG. 5 is a circuit diagram illustrating a configuration of a wiper control device for driving and controlling the above-described wiper mechanism and devices provided in the periphery thereof.

  As shown in the figure, the wiper control device according to the present embodiment controls the driving of the wiper motor 2, and outputs a signal according to the position of the wiper motor 2 and a position detection switch 21 that outputs the signal. On the basis of the received signal, a position detection unit 22 that detects the positions of the wiper blades 4a and 6a and a wiper control unit 23 that comprehensively controls the wiper motor 2 are provided.

  The wiper control unit 23 receives an output signal from the wiper switch detection unit 25 that detects the switch state of the wiper switch 24 and a vehicle speed signal detected by a vehicle speed sensor 28 mounted on the vehicle. Furthermore, power from a battery power supply 26 mounted on the vehicle is supplied via an ignition switch 29.

  The wiper motor 2 has an L contact and an H contact. When a voltage is applied to the L contact, the wiper motor 2 is driven to rotate at a low speed, and when a voltage is applied to the H contact, the wiper motor 2 is operated at a high speed. It is designed to rotate. That is, when a voltage is applied to the L contact side, each wiper blade 4a, 6a is driven at a low speed, and when a voltage is applied to the H contact side, each wiper blade 4a, 6a is driven at a high speed. Can be made.

  When the current flows in the direction of the arrow Y1 in the figure, the motor arm 3 shown in FIG. 1 is rotated in the clockwise direction, and when the current flows in the direction of the arrow Y2, the motor arm 3 Rotate counterclockwise.

  The position detection switch 21 is connected to the wiper motor 2 and rotates with the rotation of the wiper motor 2, the contact plate C connected to the ground, the battery R 26 through the resistor R 1 and the ignition switch 29. And a contact plate B pulled up to a predetermined voltage, and the rotating contact plate A rotates on the contact plate B and the contact plate C. The rotary contact plate A contacts the contact plate C when the wiper blades 4a and 6a are at the stop position, and the contact plate when the wiper blades 4a and 6a are at the rotation position (a position other than the stop position). Contact B. Accordingly, the potential of the rotating contact plate A is a ground potential when the wiper blades 4a and 6a are at the stop position, and is a pull-up potential when the wiper blades 4a and 6a are at the rotation position.

  The position detection unit 22 detects the position of the wiper blades 4a and 6a (whether the position is the stop position or the wiping position) based on the potential generated on the rotary contact plate A of the position detection switch 21, and the detected signal is wiped. Output to the control unit 23.

  The wiper switch 24 is provided at a position that can be operated by the driver, for example, in the vicinity of the steering wheel of the driver's seat, and wiper operation stop (OFF), wiper low speed operation (Lo), wiper high speed operation (Hi), and washer operation. Either (WS) can be selected. The state of the wiper switch 24 is detected by the wiper switch detection unit 25, and this detection signal is output to the wiper control unit 23.

  The wiper control unit 23 is based on a signal indicating the state of the wiper switch output from the wiper switch detection unit 25, a vehicle speed signal detected by the vehicle speed sensor 28, and a signal indicating the position of the wiper output from the position detection unit 22. The rotational speed and direction of the wiper motor 2 and the driving of the washer motor 27 are controlled by four switches Lo. SW, Hi. SW, M.M. SW, R.R. SW and a switch control unit 23a for controlling these four switches are provided.

  Lo. SW is a contact d connected to the “L” contact of the wiper motor 2; A contact point e connected to the battery power supply 26 via SW and a contact point f connected to the ground are provided, and the contact points d and e or the contact point d according to a command signal output from the switch control unit 23a described later. And f are selectively connected.

  Hi. SW is a contact g connected to the “H” contact of the wiper motor 2; A contact h connected to the battery power supply 26 via the SW and a contact i connected to the ground are provided, and the contacts g and h or the contacts g and i are selected according to a command signal output from the switch control unit 23a. Selectively connect.

  R. SW is a contact a connected to the wiper motor 2; a contact b connected to the ground; A contact c connected to the battery power supply 26 via SW, and selectively connects the contacts a and b or the contacts a and c according to a command signal output from the switch control unit 23a.

  M.M. The SW has two contacts j and k. The contact k is connected to the battery power source 26, and the contact j is Lo. SW contact e, Hi. SW contact h, and R.W. The contact j is connected to the SW contact c, and the contacts j and k are turned on / off by a command signal output from the switch control unit 23a.

  Based on the signal output from the position detection unit 22, the signal output from the wiper switch detection unit 25, and the signal output from the vehicle speed sensor 28, the switch control unit 23 a includes the four switches Lo. SW, Hi. SW, M.M. SW, R.M. The wiper motor 2 and the washer motor 27 are controlled by outputting a switching command signal to SW.

  Next, the operation of the wiper control device according to the present embodiment will be described with reference to the flowcharts shown in FIGS.

  First, when the ignition switch 29 of the vehicle is turned on, the vehicle speed V detected by the vehicle speed sensor 28 is read in step 101.

  Next, in step 102, the read vehicle speed V is compared with a predetermined speed V0 (for example, V0 = 40 km / h) set in advance as a vehicle traveling speed at which water attached to the front windshield does not drip. If the vehicle speed V is less than the predetermined speed V0, the process proceeds to step 107. If the vehicle speed V is equal to or higher than the predetermined speed V0, the process proceeds to step 103.

  In step 103, it is determined whether or not the wiper switch 24 is “Lo”. If it is “Lo”, in step 106, the Lo. Connect contacts d and f of SW, SW contacts a and c are connected. SW contacts j and k are connected. Then, the battery power source 26 → M. SW → R. SW → wiper motor 2 → “L” contact → Lo. The current flows in the order of SW → ground, and the current flows through the wiper motor 2 through the L contact in the direction of the arrow Y2 in the figure. Accordingly, the motor arm 3 shown in FIG. 1 rotates at a low speed, and the wiping operation of the front windshield by the wiper blades 6a and 4a at a low speed is performed. Further, by rotating in the counterclockwise direction, the reverse position of the wiper blade 6a on the passenger seat side becomes the position of the symbol Q3 shown in FIG. 2B, and the wiper blade 6a does not interfere with the driver's view. Will be reversed.

  On the other hand, if it is determined in step 103 that the wiper switch 24 is not “Lo”, it is determined in step 104 whether the wiper switch 24 is “Hi”. If it is “Hi”, in step 105, the switch control unit 23 a controls Hi. Connect the contacts g and i of SW and connect R. SW contacts a and c are connected. SW contacts j and k are connected.

  Then, the battery power source 26 → M. SW → R. SW → wiper motor 2 → “H” contact → Hi. Current flows in the order of SW → ground, and the current flows through the wiper motor 2 through the H contact in the direction of the arrow Y2 in the figure. Accordingly, the motor arm 3 shown in FIG. 1 rotates counterclockwise at high speed, and the wiping operation of the front windshield by the wiper blades 6a, 4a is performed at high speed. Further, as in the case where the wiper switch 24 is “Lo”, the reverse position of the wiper blade 6a on the passenger seat side is the position indicated by the symbol Q3 shown in FIG. Absent.

  That is, when the vehicle speed V is equal to or higher than a predetermined speed V0 (for example, 40 km / h), the reverse position of the wiper blade 6a on the passenger seat side in both the low speed operation and the high speed operation of the wiper blades 4a and 6a. Since it becomes the position of Q3 shown in FIG.2 (b) and does not disturb a driver | operator's visual field, forward visibility can be improved. Further, by traveling at a predetermined speed V0 or higher, water does not drip from the position of the symbol “x” shown in FIG.

  Next, when it is determined at step 104 that the wiper switch 24 is not “Hi”, it is determined at step 111 whether or not the wiper switch 24 is “WS”, and when it is “WS”. Proceeds to step 201. If it is not “WS”, it is determined in step 113 whether or not the wiper blades 6 a and 4 a are at the stop position based on the output signal of the position detection unit 22. , M.M. SW is turned off. Thereby, the drive of the wiper motor 2 is stopped.

  If it is determined in step 102 that the vehicle speed V is less than the predetermined speed V0, it is determined in step 107 whether or not the wiper switch is “Lo”. If it is “Lo”, then in step 108, the Lo. Connect the contacts d and e of SW and connect R. SW contacts a and b are connected. SW contacts j and k are connected. Then, the battery power source 26 → M. SW → Lo. SW → "L" contact of wiper motor 2 → R. The current flows in the order of SW → ground, and the current flows through the wiper motor 2 via the L contact in the direction of the arrow Y1 in the figure. Accordingly, the motor arm 3 shown in FIG. 1 rotates at a low speed, and the wiping operation of the front windshield 32 by the wiper blades 6a and 4a at a low speed is performed.

  Further, since the motor arm 3 rotates in the clockwise direction, the reverse position of the wiper blade 6a on the passenger seat side is the position indicated by the symbol Q1 shown in FIG. 2A, and the wiper blade 6a is positioned in front of the driver. It will reach the position where it becomes and it will be reversed. Therefore, the water adhering to the front windshield 32 (water adhering to the portion indicated by “x”) can be reliably removed.

  On the other hand, if it is determined in step 107 that the wiper switch 24 is not “Lo”, it is determined in step 109 whether the wiper switch 24 is “Hi”. If it is “Hi”, in step 110, the switch control unit 23a controls Hi. Connect contacts g and h of SW and connect R. SW contacts a and b are connected. SW contacts j and k are connected.

  Then, the battery power source 26 → M. SW → Hi. SW → "H" contact of wiper motor 2 → R. The current flows in the order of SW → ground, and the current flows through the wiper motor 2 through the H contact in the direction of the arrow Y1 in the figure. Accordingly, the motor arm 3 shown in FIG. 1 rotates in the clockwise direction at high speed, and the wiping operation of the front windshield by the wiper blades 6a and 4a at high speed is performed. Similarly to the case where the wiper switch 24 is “Lo”, the reverse position of the wiper blade 6a on the passenger seat side is Q1, so that water adhering to the front windshield 32 can be reliably removed. .

  That is, when the vehicle speed V is less than the predetermined speed V0, the reverse position of the wiper blade 6a on the passenger seat side in both the low speed operation and the high speed operation of the wiper blades 4a and 6a is as shown in FIG. It becomes the position of Q1 shown in this, and the water adhering to the front windshield 32 ahead of the driver can be wiped off reliably, and the forward visibility can be improved.

  More specifically, when the wiper blade 6a is reversed at the position of the symbol Q3 in FIG. 2B, the water accumulated in the portion of “x” is not wiped off by the wiper blade 4a on the driver seat side. Therefore, the visibility of the front is deteriorated when the water hangs downward, but the wiper blade 6a on the passenger seat side is reversed at the position of the reference sign Q1, so that the wiper blade on the driver's seat side is surely connected to the reverse position. Since it wipes off by 4a, the troublesomeness by water dripping below can be prevented.

  Next, when it is determined at step 109 that the wiper switch 24 is not “Hi”, it is determined at step 112 whether or not the wiper switch 24 is “WS”, and when it is “WS”. Proceeds to step 301. If it is not “WS”, it is determined in step 113 whether or not the wiper blades 6a, 4a are at the stop position based on the output signal of the position detection unit 22. M.M. SW is turned off. Thereby, the drive of the wiper motor 2 is stopped.

  In step 201 shown in FIG. 7, the vehicle speed V is equal to or higher than the predetermined speed V0, and the wiper switch 24 is set to “WS”. Under the control of the switch control unit 23a, the washer motor 27 is operated to Inject. At the same time, in step 202, Lo. Connect contacts d and f of SW, SW contacts a and c are connected. SW contacts j and k are connected. Then, the battery power source 26 → M. SW → R. SW → wiper motor 2 → “L” contact → Lo. The current flows in the order of SW → ground, and the current flows through the wiper motor 2 in the direction of the arrow Y2 in the figure. Accordingly, the motor arm 3 shown in FIG. 1 rotates in the counterclockwise direction at a low speed, and the washer liquid is injected to the front windshield, and the wiping operation by the wiper blades 6a and 4a is performed at a low speed. Is called. In addition, the reverse position of the wiper blade 6a on the passenger seat side at this time is a position indicated by a symbol Q3 shown in FIG. 2B, which is a narrow wiping range, which does not bother the driver.

  Thereafter, when it is detected in step 203 that the wiper switch 24 has been switched off from “WS”, the washer motor 27 is stopped in step 204. In step 205, based on the output signal of the position detector 22, it is detected whether or not the wiper blades 6a and 4a are at the stop position.

  If it is determined that it is at the stop position, in step S206, the count value n (n is the number of reciprocating operations of the wiper blades 6a and 4a) of the counter (not shown) of the switch control unit 23a is incremented. . In step 207, it is determined whether the count value n is one before the predetermined number n0, that is, whether n = n0-1. For example, when n0 is set to 3 times, it is determined whether n = 2.

  If n = n0−1, in step 208, Lo. Connect the contacts d and e of SW and connect R. SW contacts a and b are connected. SW contacts j and k are connected. Then, the battery power source 26 → M. SW → Lo. SW → "L" contact of wiper motor 2 → R. Current flows in the order of SW → ground, and current flows through the wiper motor 2 in the direction of the arrow Y1 in the figure. Accordingly, the motor arm 3 shown in FIG. 1 rotates in the clockwise direction at a low speed, and the wiping operation of the front windshield is performed by the wiper blades 6a and 4a at the low speed. Further, the reverse position of the wiper blade 6a on the passenger seat side is a position indicated by reference numeral Q1 in FIG. 2A, and wiping is performed over a wide range.

  Thereafter, in step 209, it is determined whether or not the wiper blades 6a and 4a have reached the stop position. The wiper motor 2 is stopped by turning off the SW.

  That is, when the washer motor 27 is driven when the vehicle speed V is equal to or higher than the predetermined speed V0, the wiper blades 6a and 4a are reciprocated a plurality of times along with this, and only the last reciprocation is performed. By rotating 3 in the clockwise direction, the reversal position of the wiper blade 6a on the passenger seat side is set to the position of reference numeral Q1, so that water attached to the front windshield 32 can be effectively removed.

  Further, even when the vehicle speed V is decelerated at a speed lower than the predetermined vehicle speed V0 during the operation of the wiper blades 4a and 6a a predetermined number of times due to the operation of the washer motor 27, the wiper blade 6a on the passenger seat side Water dripping from the reverse position can be prevented.

  On the other hand, in step 301 shown in FIG. 8, the vehicle speed V is less than the predetermined speed V0 and the wiper switch 24 is set to “WS”, and the washer motor 27 is operated under the control of the switch control unit 23a. At the same time, in step 302, Lo. Connect the contacts d and e of SW and connect R. SW contacts a and b are connected. SW contacts j and k are connected. Then, the battery power source 26 → M. SW → Lo. SW → "L" contact of wiper motor 2 → R. Current flows in the order of SW → ground, and current flows through the wiper motor 2 in the direction of the arrow Y1 in the figure. Accordingly, the motor arm 3 shown in FIG. 1 rotates in the clockwise direction at a low speed, and the washer liquid is injected to the front windshield, and the wiping operation by the wiper blades 6a and 4a at a low speed is performed. . At this time, the reverse position of the wiper blade 6a on the passenger seat side is the position indicated by reference sign Q1 in FIG. 2A, and wiping is performed over a wide range.

  Thereafter, when it is detected in step 303 that the wiper switch 24 has been switched from “WS” to OFF, the washer motor 27 is stopped in step 304. In step 305, based on the output signal from the position detector 22, it is detected whether or not the wiper blades 6a and 4a are at the stop position.

  If it is determined that the vehicle is at the stop position, the count value n of the counter is incremented in step S306. In step 307, if it is confirmed that the count value n has reached the predetermined number n0, in step 308, the M.M. The wiper motor 2 is stopped by turning off the SW.

  Thus, the wiping speed control by the wiper blades 6a and 4a according to the traveling speed of the vehicle and the control for changing the reverse position of the passenger side wiper blade 6a are performed.

  Thus, in the wiper control device according to the present embodiment, when the vehicle speed V is equal to or higher than the predetermined speed V0, the reverse position of the wiper blade 6a on the passenger seat side is on the stop position side. The wiper blade 6a on the passenger side can be prevented from reaching the front of the driver, and troublesomeness caused by the wiper blade 6a entering the driver's field of view can be prevented.

  Further, in this case, water accumulates at the position of the symbol “X” shown in FIG. 2B and cannot be wiped off by the wiper blade 4a on the driver seat side, but the vehicle speed V is equal to or higher than the predetermined speed V0. As a result, water does not droop downward.

  Further, when the vehicle speed V is less than the predetermined speed V0, the wiper blade 6a on the passenger seat side reaches the position in front of the driver, and this reverse position overlaps with the wiping range of the wiper blade 4a on the driver seat side. Water does not collect at the reverse position of the wiper blade 6a on the passenger seat side, and water can be prevented from dripping.

  Moreover, since the wiping range of the wiper blade 4a on the driver's seat side is not changed, water can be wiped off reliably over a wide range.

  Further, when the washer function is operated and the vehicle speed V is less than the predetermined speed V0, the reverse position of the wiper blade 6a on the passenger seat side is the wiper on the driver seat side as in the case of the low speed traveling described above. Since it overlaps with the wiping range of the blade 4a, it is possible to prevent water from dripping.

  Further, when the washer function is operated and the vehicle speed V is equal to or higher than the predetermined speed V0, the reverse position of the wiper blade 6a on the passenger seat side is the position of the wiper blade 4a on the driver seat side only once. Since it overlaps with the wiping range, water can be prevented from dripping even when the vehicle speed gradually decreases.

  The wiper control device of the present invention has been described based on the illustrated embodiment. However, the present invention is not limited to this, and the configuration of each part is replaced with an arbitrary configuration having the same function. Can do.

  For example, in the above-described embodiment, the predetermined speed V0 serving as a threshold when changing the wiping range of the wiper blade 6a on the passenger seat side is set to 40 km / h, but this is because water attached to the front windshield 32 travels. The speed is such that the wind does not droop, and the predetermined speed V0 varies depending on the angle of the front windshield 32. Therefore, the predetermined speed is not limited to 40 km / h, and can be appropriately changed depending on the angle of the front windshield 32 or other factors.

  In the present embodiment, the operating speed of the wiper motor 2 is selected by the driver's operation of the wiper switch 24. However, for example, when the traveling speed of the vehicle is 60 km / h or more, it is automatically selected. It is also possible to apply the present invention to a vehicle speed sensing type wiper device that operates the wiper motor 2 at a high speed and automatically operates the wiper motor 2 at a low speed when the speed is lower than this speed.

  Furthermore, in the present embodiment, the example in which the reverse position of the passenger-side wiper blade 6a is changed using the eccentric joint cover 13a has been described. However, the present invention is not limited to this, and for example, the passenger-side wiper and the driver's seat Two motors for driving the side wipers can be provided, and the reversing position of the wiper blade 6a can be changed by controlling the wiper motor for driving the wiper blade 6a on the passenger seat side.

  The present invention is extremely useful as a control device for controlling a wiper of a vehicle having a large area front windshield.

It is a block diagram of the wiper mechanism used as the control object by the wiper control device concerning the present invention. (A) is explanatory drawing which shows the wiping range of the wiper blade at the time of vehicle low-speed driving | running | working, (b) is explanatory drawing which shows the wiping range of the wiper blade at the time of vehicle high-speed driving | running | working. It is explanatory drawing which shows the detailed structure of a motor arm and a link connected with this, (a) is a top view, (b) is an AA cross section, (c) is a BB cross section. It is explanatory drawing which shows a state when a motor arm rotates counterclockwise. It is a circuit diagram which shows the structure of the wiper control apparatus which concerns on one Embodiment of this invention. It is the 1st partial view of the flowchart which shows operation | movement of the wiper control apparatus which concerns on one Embodiment of this invention. It is a 2nd division figure of the flowchart which shows operation | movement of the wiper control apparatus which concerns on one Embodiment of this invention. It is a 3rd division figure of the flowchart which shows operation | movement of the wiper control apparatus which concerns on one Embodiment of this invention.

Explanation of symbols

2 Wiper motor 3 Motor arm 4 Wiper arm (driver's side)
4a Wiper blade (driver's side)
5 Pivot arm (driver's side)
6 Wiper arm (passenger side)
6a Wiper blade (passenger side)
7 Pivot arm (passenger side)
8 links (passenger side)
10a Rotating shaft 11 Link (Driver seat side)
12a, 12b Ball joint 13a, 13b Joint cover 14 Groove portion 21 Position detection switch 22 Position detection portion 23 Wiper control portion 23a Switch control portion 24 Wiper switch 25 Wiper switch detection portion 26 Battery power supply 27 Washer motor 28 Vehicle speed sensor 29 Ignition switch 31 Support Arm 32 Front windshield 33 Concave part 34 Stopper 35 Support member 36 Concave part

Claims (3)

In the wiper control device for controlling the wiping operation of the driver side wiper blade and the driver side wiper that wipes the front windshield by reciprocating from the stop position to the reverse position on the front windshield.
At the time of wiping operation by the wiper blade when the vehicle traveling speed is less than the predetermined speed, the driver seat side wiper blade and the passenger seat side wiper blade reciprocate from a predetermined stop position to a predetermined reversal position, respectively. Wipe away
A wiper characterized in that at the time of wiper wiping operation when the traveling speed of the vehicle exceeds a predetermined speed, at least the reverse position of the passenger side wiper blade is changed from the predetermined reverse position to the stop position side. Control device. The wiper control device according to claim 1,
It has a washer function that injects the washer liquid into the front windshield and performs a wiping operation with the wiper blade a preset number of times.
When the traveling speed of the vehicle is less than the predetermined speed, the wiper blade wiping operation associated with the washer function reciprocates a predetermined number of times from the stop position to the predetermined reverse position,
When the traveling speed of the vehicle is equal to or higher than the predetermined speed, the wiper blade wiping operation associated with the washer function is performed at least by turning the wiper blade on the passenger seat side at the reverse position by one less than the preset number of times. A wiper control device, wherein the wiper control device changes to a stop position side from a preset position and performs a reverse operation at the preset reverse position only once. In the wiper control device according to claim 1 or 2,
When the wiper wiping operation is performed when the traveling speed of the vehicle exceeds a predetermined speed, the reverse position of only the wiper blade on the passenger seat side is changed from the predetermined reverse position to the stop position side. Wiper control device.

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