JP2001225726A - Wiper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent changes of an oscillation scope of a wiper arm even if a position of a pivot shaft is deviated from that of a turning shaft when a wiper device for opening and closing window arranged so as to oscillate freely is made into a device of split type provided with a drive member and a driven member. SOLUTION: A flat plate part 7e opposing to a first side face part 6g of a clutch body 6 positioned at a first inversion position S1 and a stopper piece part 7f opposing to a second side face part 6h of the clutch body 6 positioned at a second inversion position S2 are formed in a sleeve 7. Inversion position detection sensors 13, 14 outputting detection signals as the first and second side face parts 6g, 6h of the clutch body approach are provided in the flat plate part 7e and the stopper piece part 7f. These sensors 13, 14 are connected with a drive control part 12 driving and controlling a wiper motor M to invert and drive the wiper motor M when the first and second inversion position detection signals are inputted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a wiper device provided for wiping a window surface of a vehicle.

[0002]

2. Description of the Related Art In general, vehicles such as hatchback vehicles, wagon vehicles, and one-box vehicles are provided with a rear gate which can be freely opened and closed. Some have open / close windows. By the way, when a wiper device for wiping such an open / close window is separately mounted on the open / close window and the vehicle body side, if the wiper driving unit is mounted on the open / close window side, the weight of the open / close window increases, and the open / close window becomes heavy. It is necessary to increase the strength of a hinge portion and the like that can be freely opened and closed and swing, and there is a problem that the opening and closing operation becomes heavy. Therefore, the actual fairness 8-6
No. 649, a blade is provided on the opening / closing window side.
It has been proposed that a driven member such as a wiper arm, a pivot shaft or the like, which serves as a wiper body, is provided, while a driving member to which power from a wiper motor is transmitted is provided on the vehicle body side. By the way, between the driving member and the driven member, it is difficult to always connect in an optimal state due to an assembling error or occurrence of backlash or distortion due to continuous use, and the position may be shifted. ,
Since the pivot shaft of the driven member and the rotating shaft constituting the driving member are directly connected, if there is such an axis deviation, the connection state will be impaired, causing problems such as early destruction and malfunction. is there. For this reason, as shown in Japanese Patent No. 2963685, a disc-shaped connecting plate is integrally formed on the rotating shaft, an engaging hole is formed in the connecting plate, and an engaging projection is provided on the pivot shaft side. As a configuration for transmitting power by engaging the engagement protrusions with the engagement holes of the connection plate, direct connection between the rotating shaft and the pivot shaft is avoided, and the connection between the engagement holes and the engagement protrusions is prevented. It is proposed that a play be provided between the shafts so as to absorb the misalignment of the shafts but not to damage the connection.

[0003]

However, in the structure disclosed in the above-mentioned patent publication, the engagement hole is formed in a long hole extending in the radial direction of the connection plate. The positional deviation in the left-right direction (radial direction) can be effectively absorbed, but it is difficult to cope with a vertical positional deviation that is perpendicular to the positional deviation. In other words, since the wiper arm is swung and swung about the pivot shaft mounting center as a fulcrum, it is assumed that there is a lateral displacement between the pivot shaft and the rotation shaft. Is moved, and the displacement is absorbed without substantially changing the wiping swing range (wiping swing range) integrated with the pivot shaft of the wiper arm. On the other hand, as shown in FIG.
When the pivot shaft 9 is displaced upward by L1 with respect to the pivot shaft 4 and the pivot shaft 4 swings at a predetermined wiping swing angle α, the swing causes the engagement projection to move through the elongated hole. In this state, power is transmitted from the rotating shaft 4 to the pivot shaft 9 via these connecting portions, so that the wiping swing angle β of the pivot shaft 9 (indicated by a dashed line) is the wiping swing angle of the rotating shaft 4. greater than α (α
<Β) In this case, the wiping swing range of the wiper arm interlocked with the pivot shaft 9 becomes large, and there is a possibility that the wiper arm swings beyond the window surface of the opening / closing window. On the other hand, when the pivot shaft 9 is displaced downward by L2 with respect to the rotating shaft 4, the wiping swing angle γ of the pivot shaft 9 (indicated by a two-dot chain line) becomes is smaller than α (α> γ). In such a case, the wiping swing range of the wiper arm linked to the pivot shaft 9 is reduced. Cannot respond to the change in the wiping swing range caused by the To avoid this, set the pattern in consideration of the change in the wiping swing range, or increase the stroke between the rotation axis and the long hole to shift the position between the rotation axis and the pivot axis. However, in the former case, it is necessary to adopt a moderate wiping swing range, which hinders the freedom of design in pattern setting, and in the latter case, However, there is a problem in any case because the connecting plate becomes large, and there is a problem to be solved by the present invention.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has been created with the object of solving these problems. A wiper device in which the wiper arm swings back and forth between both reversing positions is rotatably supported in a state where the wiper arm penetrates through the inside and outside of the opening / closing window, and the wiper arm is fixed to the tip, and the wiper device is turned around the vehicle body. It is a split type having a driving member that is freely supported and rotates by forward / reverse driving of a wiper motor, and is configured such that a driven member is connected to the driving member when the opening / closing window is closed so that the wiper arm can reciprocally swing. In this case, a reversal position detecting means for detecting that the wiper arm has reached the reversal position and outputting a reversal position detection signal, and a drive control means for reversing the wiper motor based on the input of the reversal position detection signal. Are those configured with and. By doing so, the swing range of the wiper arm can be maintained at a preset state even when the driven member and the driving member are connected in a displaced state. In this case, the connection between the driven member and the driving member according to the present invention is achieved by connecting a clutch body fixed to a base end of the driven member protruding toward the vehicle interior so as to rotate integrally with an engagement provided on a rotation shaft. The reversing position detecting means may be provided between the clutch body and a fixing member supporting the clutch body on the opening / closing window. . Further in this one,
The fixing member of the present invention is provided with an opposing piece facing the reversing position of the clutch body, and the reversing position detecting means is provided on the clutch body, and outputs a detection signal to the drive control unit when the opposing piece is approaching the opposing piece. It can be configured to have

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a first embodiment of the present invention will be described with reference to FIGS.
In the drawings, reference numeral 1 denotes a rear gate of a vehicle, which is configured to be swingably openable and closable up and down around a top end of the vehicle as a center of rotation. Further, an opening 1a is formed in the rear gate 1, and four peripheral edges of the opening 1a are
The upper end of a glass opening / closing window 2 is connected to an upper frame member 1 b via a hinge 3.
Thereby, the opening / closing window 2 is configured so that the lower end portion swings up and down around the hinge 3 with respect to the rear gate 1 to open and close the rear gate opening 1a. A substantially circular cutout window 1c is formed below the frame member 1b of the rear gate 1 (on the vehicle body side), and the upper end of the driving member D is exposed to the outside through the cutout window 1c. I have.

The rotating shaft 4 is rotatably supported on the vehicle body side, is interlocked with a wiper motor M described later via a power transmission mechanism (not shown), and rotates forward and backward based on the drive of the wiper motor M. It is set to work. At the upper end of the rotating shaft 4, a substantially disc-shaped connecting plate 5 that integrally rotates with the rotating shaft 4 is fixed integrally (non-rotating shape). The driving member D is constituted by the portion and the connecting plate 5 and is set to be exposed to the outside through the cutout window 1c. Further, an engagement hole 5a is formed in the outer diameter side edge of the connection plate 5 so as to be engaged with a first engagement protrusion 6a of a clutch body 6 described later so as to be freely detachable. Have been.

On the other hand, reference numeral 7 denotes a sleeve constituting a driven member A of the wiper device. The sleeve 7 is disposed in a through hole 2a formed in the opening and closing window 2 so as to penetrate the opening and closing window 2 in and out. It is fixed via a rubber bush 8, and serves as a fixing member for fixing the driven member A to the opening / closing window 2. The sleeve 7 has a cylindrical inner peripheral portion 7a opened in a direction penetrating the opening / closing window 2. Here,
The pivot shaft 9 is rotatably supported with both ends protruding. The pivot shaft 9 is disposed to face the rotation shaft 5 of the driving member D when the opening / closing window 2 is closed. further,
A base end of a wiper arm 10 is integrally attached to an upper end (tip) 9a of the pivot shaft 9 projecting outward from the sleeve cylinder inner peripheral portion 7a.
A wiper blade 11 having a rubber for wiping a window surface is attached to a tip end of the wiper blade 11. A large-diameter portion 7b is formed in a portion of the sleeve 7 located inside the vehicle, and an outer cylindrical portion 7c extends downward below the large-diameter portion 7b. 7c has an engagement groove 7d with which a second engagement protrusion 6b formed on the clutch body 6 is removably engaged.
Are formed at appropriate intervals in the circumferential direction.
Further, a flat plate portion 7e along the lower frame of the frame member 2b of the opening / closing window 2 is provided on a lower outer diameter portion of the inner portion of the sleeve 7 on the vehicle inner side.
Extends downward. In addition, this flat plate portion 7e
Is extended to a length to fit the clutch body 6 attached to the pivot shaft 9 together with a stopper piece 7f described later, and has a function of restricting the rotation of the clutch body 6 by a predetermined angle or more. .

The clutch body 6 includes a support piece 6c integrally and non-rotatably fastened to a base end 9b protruding inward (lower end side) of the pivot shaft 9, and a support piece 6c.
and a swinging piece 6e which is vertically swingably mounted on the swinging piece 6c via a pin 6d. The first and second engaging projections 6a and 6b are respectively attached to the swinging piece 6e in the vertical direction. The projection is formed. Further, the swinging piece 6e is urged by the urging ram 6f so that the inner diameter side end moves upward, and the driven member A is separated from the driving member D when the opening / closing window 2 is opened. That is, when the opening / closing window 2 is opened, as shown in FIG. 2, the inner diameter side end of the swinging piece 6e is moved upward by receiving the urging force of the urging spring 6f. Engaging projection 6b
Is engaged with the sleeve engaging groove 7d. On the other hand, when the driven member A and the driving member D face each other when the opening / closing window 2 is closed, as shown in FIG. The rocking piece 6e engages with the mating hole 5a, whereby the swinging piece 6e moves downward at the inner diameter side end against the biasing bullet 6f, and is engaged with the sleeve engaging groove 7d of the second engaging projection 6b. In this state, the driving force from the driving member D is applied to the rotating shaft 4,
The power is set to be transmitted to the driven member A side via the coupling plate 5, the clutch body 6, and the pivot shaft 9. Thus, when the opening / closing window 2 is open, the clutch body 6 is engaged with the sleeve 7 fixed to the opening / closing window 2, thereby restricting (unrotating) the pivoting of the pivot shaft 9. This prevents rattling of the wiper arm 10,
On the other hand, when the opening / closing window 2 is closed, the driving member D
The driving force from the side is set in such a manner that the wiping swing of the wiper arm 10 is performed in conjunction with the pivot shaft 9 via the clutch body 6.

When the opening / closing window 2 is closed, the clutch body 6 reciprocates in a predetermined swing range around the pivot shaft 9 as the driving member D is driven. The range directly sets the wiping swing range of the wiper arm 10 (wiper blade 11), and the first and second reversal positions S1 and S2 of the clutch body 6 correspond to the first and second reversal positions WS1 and WS1 of the wiper arm. WS2 respectively. The clutch body 6 is disposed so as to face the flat plate portion 7e inside the vehicle body of the sleeve 7, and swings in a gap formed on the opposite side (the side where the flat plate portion 7e is not formed) of the sleeve flat plate portion 7e. However, the flat plate portion 7e is further provided with a stopper piece 7f at a portion opposed to the clutch body 6, and the clutch body 2 reversibly swings between the first reversing position S1 and the second reversing position S2. At this time, as shown in FIG. 4, the flat plate portion 7e and the stopper piece 7f are set so as to be in close proximity to each other, and the flat plate portion 7e and the stopper piece 7f are connected to the clutch body 6 of the present invention. It corresponds to the facing piece. Then, the first plate portion 7e and the stopper piece portion 7f have a first
The second inversion position detection sensors 13 and 14 are provided, respectively, and the clutch body 6 reaches the first and second inversion positions S1 and S2 (the wiper arm 10 is in the first and second inversion positions WS1 and S2).
WS2), the first and second reversal position detection sensors 13 and 14 closely approach the pair of first side surfaces 6g or the second side surfaces 6h opposed in the swinging direction of the swinging piece 6e. Reverse position detecting means for detecting that the wiper arm 10 has reached the preset first and second reverse positions WS1 and WS2. Is configured.

On the other hand, 12 is a drive control unit (drive control means) provided on the vehicle body side, and the wiper motor M is connected to the drive control unit 12, and the wiper motor M is
It is set so as to perform forward / reverse drive based on a drive command from the drive control unit 12. Further, the drive control unit 12 includes:
An operation switch 15 for a rear wiper arranged in an operation section near the driver's seat is connected, and the operation switch 15 is turned on.
The setting is such that an operation signal is input in the state. Incidentally, in the present embodiment, when the rotation shaft 4 rotates with the forward rotation of the wiper motor M, the clutch body 6 swings from the first reversing position S1 toward the second reversing position S2,
The clutch body 6 is set so as to swing from the second reversing position S2 toward the first reversing position S1 when the rotating shaft 4 rotates with the reverse rotation driving.

Further, the drive control unit 12 includes a sleeve 7
First and second reversal position detection sensors 13 and 14 provided in
Are connected, and the first or second inversion position detection signal is input in response to detecting that the clutch body 6 has reached the first or second inversion position S1, S2. . Here, the first and second reversal position detection sensors 13 and 14 are provided in a state where they can be adjusted to protrude and retract with respect to the flat plate portion 7e and the stopper piece 7f, and the first and second position detection sensors 13 and 14 are provided. Is adjusted so that fine adjustment of the wiping swing range of the wiper arm 10 can be performed by adjusting the position of the wiper arm 10. Incidentally, since the first and second reversal position detection sensors 13 and 14 are provided on the opening / closing window 2 side and the drive control unit 12 is provided on the vehicle body side,
The wiring between the first and second inversion position detection sensors 13 and 14 and the drive control unit 12 bypasses the frame member 2 b of the opening / closing window 2, and passes through the hinge unit 3 to the frame member 1 on the vehicle body side.
The wiring is arranged on the b side. The first and second reversing position detection sensors 13 and 14 may of course be configured to output a radio signal to the drive control unit 12. In this case, no wiring is required.

The drive controller 12 controls the drive of the wiper motor M based on the operation signal from the operation switch 15 and the detection signals from the first and second inversion position detection sensors 13 and 14. The control procedure will be described with reference to the flowchart shown in FIG. When the system starts with the engine start of the vehicle, the drive control unit 1
2 performs initial setting, and subsequently determines whether or not an operation signal from the operation switch 15 has been input. At this time, the wiper arm 10 performs the first stop position W
It is located at S1. When it is determined that an operation signal has been input (the operation switch 15 has been turned ON),
A drive command is output to the wiper motor M to perform forward rotation drive. As a result, the clutch body 6 moves to the first reversal position S
When the operation control unit 15 determines that the input of the operation signal from the operation switch 15 has stopped (the operation switch 15 has been turned OFF) in this state, the drive control unit 12 moves to the second inversion position S2. The mode is shifted to the automatic stop control mode, and a series of automatic stop controls is performed. The automatic stop control will be described later. On the other hand, when the operation switch 15 is in the ON state, the drive control unit 12 detects that the second inversion position detection sensor 14 of the flat plate portion 7e is in the proximity opposition state of the second side surface portion 6h of the clutch body 6, that is, The normal rotation drive of the wiper motor M is performed until the second inversion position detection signal is input, and a drive command is output so that the wiper motor M performs the reverse rotation drive in response to the input of the second inversion position detection signal.

When the wiper motor M enters the reverse rotation driving state, the drive control unit 12 determines whether or not there is an input of an operation signal from the operation switch 15, and if not, performs automatic stop control of the wiper motor M. When it is determined that an operation signal is input, a reverse drive command is continuously output to the wiper motor M until a first reverse position detection signal is input, and a forward drive command is output with the input of the first reverse position detection signal. Thus, during the ON operation of the operation switch 15, the wiper motor M continues the forward / reverse drive as described above, and the clutch body 6 moves the first and second reversal positions S1,
Perform the reciprocating reciprocating swing between S2 and wiper arm 1
The opening / closing window 2 is set to be swung by 0.

Next, the automatic stop control mode of the wiper motor M will be described. In the present embodiment, the wiper arm 10 is always stopped at the first reversing position WS1 (the first reversing position S1 of the clutch body 6). Therefore, the input of the operation signal is stopped during the forward rotation of the wiper motor M, that is, while the clutch body 6 swings toward the second reversing position S1 (operation In the case where the switch 15 is turned OFF), the drive control unit 12 outputs a normal rotation drive command to the wiper motor M until the second reverse position detection signal is detected, and after the second reverse position detection signal is detected. Is set to output a reverse rotation drive command up to the first reverse position detection signal, and to output a drive stop command after detecting the first reverse position detection signal. On the other hand, when the wiper motor M is being driven in the reverse direction, that is, when the input of the operation signal is stopped while the clutch body 6 is swinging toward the first reversing position S2, the drive control unit 12
The reverse rotation drive command is output to the wiper motor M until the first reverse position detection signal is input, and after detecting the first reverse position detection signal, the drive stop command is output.

As described above, by performing the automatic stop control, the wiper arm 10 is stopped at the first reversing position WS1, and in this state, as described above,
The first engagement protrusion 6a of the rocking piece 6e is
a. In this state, when the opening / closing window 2 is opened, the engagement groove 7d is formed in an alignment shape so that the second engagement protrusion 6b of the rocking piece 6e is engaged with the sleeve engagement groove 7d. When the pivot shaft 9 is prevented from swinging and the wiper arm 10 (clutch body 6) is inadvertently rotated, and when the opening / closing window 2 is closed from this state, the first Engaging projection 6
a is a position where it can be fitted into the coupling plate engaging hole 5a. When the engine is stopped during the wiping operation of the wiper arm 10, the wiper motor M suddenly stops driving. In this case, the shift to the automatic stop control mode is not performed, and the clutch body 6 is moved to the first reverse position. It stops in a state where it is not located at S1. When the opening / closing window 2 is opened in such a state, the second engagement projection 6b of the swinging piece 6e may be displaced from the engagement groove 7d formed at an appropriate interval. In this case, the wiper arm When the pivot 10 rotates slightly, it engages with the nearest engagement groove 7d, thereby preventing the pivot shaft 9 from rotating carelessly.
On the other hand, when the opening / closing window 2 is closed from this state, a slight displacement of the pivot shaft 9 (wiper arm 10) occurs between the first engagement protrusion 6a and the connection plate engagement hole 5a. As a result, the first engagement protrusion 6a rides on the upper surface of the connection plate 5 as shown in FIG. 5, but in this case, the first engagement protrusion 6a is pressed by the urging force of the urging spring 6f. The first engaging projection 6a can be automatically engaged with the engaging hole 5a by rotating the connecting plate 5 in any one of the forward and reverse rotation directions. It has become. Then, even in such a case, the wiper motor M is controlled based on the control procedure of the drive control unit 12 shown in the flowchart. That is, in the control procedure, when the operation switch 15 is turned on, the wiper motor M is firstly driven to rotate forward. In this process, the first engagement protrusion 6a and the connection plate 5 are engaged. After that, the drive control is performed based on the above procedure, so that the wiper arm 10 is controlled to perform the normal wiping swing. In the present embodiment, a detection switch that outputs a detection signal to the drive control unit 12 when the opening / closing window 2 is opened during the wiping swing operation of the wiper arm 10 is provided. The control unit 12 controls the wiper motor M to stop in an emergency according to the input of the detection signal from the detection switch. When the wiper device is operated after such an emergency stop, that is, when the wiper arm 1
Even when the wiper arm 10 is stopped at a position other than the first reversing position S1, the drive control of the wiper motor M may be performed according to the above-described procedure.

In the embodiment of the present invention configured as described above, the wiper device provided on the opening / closing window 2 side has a driving member D connected to the wiper motor M provided on the vehicle body side. Can be lightened. In this case, since the wiper device is a split type of the driven member A and the driving member D, the pivot shaft 9 of the driven member A and the rotating shaft 4 of the driving member D move with the opening and closing of the opening / closing window 2. In this case, even if vertical axis displacement may occur, the driven member A and the driving member D are connected to the clutch body 6.
The direct connection between the shafts is avoided by connecting via shafts, so that the shafts can be connected in a stable state. In this case, even if the rotation shaft 4 and the pivot shaft 9 are vertically displaced and the power is transmitted in a state where the swing range of the rotation shaft 4 is different from the swing range of the pivot shaft, the wiper motor M Is driven by the wiper motor M based on the detection of the preset first reversal position WS1 and second reversal position WS2 by the wiper arm 10. As a result, the drive motor M is driven by the first and second reversing positions WS1, WS1 of the wiper arm 10 on the driven member D side.
2, the swinging range set in advance can be kept constant without changing the swing range, whereby the wiping range of the wiper arm 10 is set to the window frame limit of the opening / closing window 2. The wiping range can be set so that the degree of freedom in setting the wiping range can be increased.

As described above, according to the embodiment of the present invention, the first and second reversing positions S1, S of the clutch body 6 are used as a structure for keeping the swing range of the wiper arm 10 constant.
The reverse plate position detection sensors 13 and 14 are provided on the sleeve flat plate portion 7e and the stopper piece 7f facing the second clutch member 2, and the reverse position detection sensors 13 and 14 are the clutch body first and second side surface portions 6g.
6h, the first and second reversal positions WS1, WS2 of the wiper arm 10 are detected by detecting that
Since the wiper motor M is controlled so as to be driven in reverse on the basis of this, the drive-side member D becomes large, as in the case where the diameter of the connecting plate 5 is increased and the change in the swing range is reduced. There are no such defects.

Next, a second embodiment will be described with reference to FIGS.
Description will be made based on the drawing shown in FIG. In this embodiment, the driving member D of the first embodiment is employed as it is, and the configuration of the driven member A is different from that of the first embodiment. The sleeve 16 as a fixing member extends radially from the outer periphery of the inside of the vehicle body, and is integrally formed with a link portion 16a serving as a fixing portion to the rear gate 1 side. One end of a link plate 17 is integrally fixed to the base end of the pivot shaft 9, and a joint pin 18 is arranged at the base end of the link plate 17. The joint pin 18 includes an outer cylindrical portion 18a integrally attached to the link plate 17, and a pin main body 18c which is fitted inside the outer cylindrical portion 18a so as to be able to advance and retreat via an elastic machine 18b. The pin main body 18c is provided with the engaging hole 5 of the connecting plate 5 similarly to the first engaging protrusion 6b of the first embodiment.
It is set so that it can be freely engaged and disengaged with a. Further, when there is a shift in the amount of rotation between the rotating shaft 4 and the pivot shaft 9, the pin body 18c resiliently presses the connecting plate 5, and the rotation of the connecting plate 5 automatically causes the pin body 18c to automatically engage with the engaging hole 5a.
The configuration for engaging with the first embodiment is the same as that of the first embodiment. Then, the opening / closing window 2 is closed, and the joint pin 18 is closed.
When the wiper motor M is driven in a state where the link plate 17 is engaged with the connection plate engagement hole 5a, the link plate 17
Reciprocally inverts between the first and second reversing positions similarly to the clutch body 6 of the first embodiment, and the reciprocal inversion swing of the link plate 17 causes the first and second reciprocation of the wiper arm 10. This corresponds to the reciprocation reversal swing between the two reversal positions WS1 and WS2. The joint pin 18 has a rubber O-ring 18d having an outer diameter larger than that of the outer cylindrical portion 18a fitted on the outer peripheral surface of the outer cylindrical portion 18a.

On the other hand, an inversion stopper 19 is fitted to the cylindrical end 16b of the sleeve 16 at the base end inside the vehicle body, in a state of being fixed to the sleeve 16 side. This reversing stop 19
A cylindrical fixing portion 19a fitted to the sleeve cylinder end 16b
And first and second stopper pieces 19b and 19c integrally extending from the outer periphery of the fixing portion 19a toward the outer diameter side. The first and second stopper pieces 19b and 19c are ,
When the link plate 17 that rotates integrally with the pivot shaft 9 swings and is located at the first and second reversing positions S1 and S2, the link plate 17 is set so as to be in close proximity to the outer cylindrical portion 18a of the joint pin 18. Further, a mounting piece 19d extends from the fixing part 19a. After the fixing part 19a is externally fitted to the cylindrical end part 16b of the sleeve 16, the mounting piece 19d is applied to the link part 16a on the sleeve 16 side. Then, it is configured to be integrated with the link portion 16a by being fixed by fixing means 19e such as a bolt and a nut. Here, a mounting hole 19f formed in the mounting piece 19d of the reversing stopper 19 and into which the fixing means 19e is inserted is formed in a long hole shape. The fixing of the mounting piece 19d by the fixing means 19e is performed by a sleeve cylinder. It is set so that the position can be adjusted in the circumferential direction (long hole direction) with the end 16b as the center (fulcrum). Thereby, the mounting piece 19d
The position of the stopper pieces 19b and 19c of the reversing stopper 19 is adjusted by mounting and adjusting the position of the link plate 17, so that the first and second reversing positions S1 and S2 of the link plate 17 can be defined.

On the other hand, the first, which constitutes the reversal position detecting means,
The second reversing position detecting sensors 13 and 14 are provided on the first and second stopper pieces 19b and 19c of the reversing stopper 19, and the first and second reversing position detecting sensors 13 and 14 It is set to detect the opposition and output the first and second inversion position detection signals to the drive control unit 12. In this embodiment, the control is performed based on the same control procedure as in the first embodiment, so that even if there is an axis deviation between the pivot shaft 9 and the rotation shaft 4, the wiper arm 10 can be controlled. Is configured to be able to maintain a constant wiping range. Incidentally, in this case, when the wiper arm 10 stops at a position other than the first reversing position WS1 due to an engine stop or the like during operation of the wiper device and the opening / closing window 2 is opened in this state, the pivot shaft 9 rotates. Wiper arm 1 without movement restriction
0 swings toward the first and second reversing positions S1 and S2 by its own weight. At this time, the wiper arm 10 is attached to the stopper pieces 19b and 19c of the reversing stopper 19 by the O-
The ring 18d abuts against the frame member 2b of the opening / closing window 2 to avoid swinging.

The present invention is, of course, not limited to the above-described embodiment, and the reversing position detecting sensor provided on the clutch body detects that the opposing surface is approaching and outputs a detection signal. However, a contact-type limit switch that outputs a detection signal when it comes into contact with an object may be employed. In addition, the location where the reversing position detection sensor is mounted is not limited to the clutch body, but may be one that rotates in synchronization with the wiper arm, such as between the wiper arm and the sleeve, or between the pivot shaft and the sleeve, and fixed on the opening / closing window side. It only has to be between the members. Further, the present invention can also be applied to a motor in which the wiper motor is controlled so as to be driven forward and backward in a preset swing range. In this case, the reversal of the wiper motor is set so that the reversal position detecting means forcibly reverses the rotation only when the swing of the wiper arm deviates from a preset range. The reversal based on the forward / reverse drive of the normal control of itself may be performed.

[Brief description of the drawings]

FIG. 1 is a rear perspective view of a vehicle.

FIG. 2 is a sectional view of a main part when an opening window is opened.

FIG. 3 is a sectional view of a main part when the opening / closing window is closed.

FIG. 4 is a bottom view of a main part when the opening window is opened.

FIG. 5 is a cross-sectional view of a main part showing a state in which the first engagement protrusion 6a rides on the upper surface of the connection plate 5.

FIG. 6 is a block diagram showing a control state in a drive control unit.

FIG. 7 is a flowchart illustrating a control procedure of a wiper motor by a drive control unit.

FIG. 8 is a partial cross-sectional view of a driven member according to a second embodiment.

9A and 9B are plan views of FIG. 8, respectively.
It is a bottom view.

FIGS. 10A, 10B, and 10C are a front view, a bottom view, and a side view of a reversing stopper, respectively.

FIG. 11 is a pattern diagram showing a swing range of a conventional wiper arm.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rear gate 1b Frame material 1d Notch window 2 Opening / closing window 4 Rotating shaft 5 Connecting plate 6 Clutch body 7 Sleeve 9 Pivot shaft 10 Wiper arm 12 Drive control unit 13 First inversion position detection sensor 14 Second inversion position detection sensor 15 Operation switch 18 Joint pin 19 Reverse stop

Claims (3)

[Claims] 1. A wiper device comprising a wiper arm reciprocatingly swinging between an open / close window provided on a vehicle body between open / close positions so as to freely open / close and swingably supported by the open / close window while penetrating inside and outside. A split type having a driven member having a wiper arm fixed to the tip and a driving member rotatably supported by the vehicle body and rotated by forward / reverse driving of the wiper motor. In connection with the drive member, the wiper arm is configured to be capable of reciprocating swinging. In this case, the wiper arm detects that the wiper arm has reached the reverse position and outputs a reverse position detection signal. And a drive control means for inverting the wiper motor based on the input. 2. The clutch according to claim 1, wherein the driven member and the driving member are connected to each other by a clutch body fixed to a base end of the driven member protruding toward the vehicle interior so as to rotate integrally with the driven member. By engaging and disengaging with the engaging portion,
The reverse position detecting means is a wiper device provided between the clutch body and a fixing member supporting the clutch body on the opening / closing window. 3. The fixing member according to claim 2, wherein an opposing piece is formed on the fixing member so as to oppose the reversing position of the clutch body, and the reversing position detecting means is provided on the clutch body, and is driven by being proximate to the opposing piece. A wiper device configured to output a detection signal to a control unit.