WO2017170282A1

WO2017170282A1 - Wiper device for vehicles

Info

Publication number: WO2017170282A1
Application number: PCT/JP2017/012177
Authority: WO
Inventors: 暁弘内海; 敦加藤; 岡田　真一
Original assignee: アスモ株式会社
Priority date: 2016-03-31
Filing date: 2017-03-24
Publication date: 2017-10-05
Also published as: JP2017178258A; JP6724492B2

Abstract

A wiper device for vehicles includes a wiper arm, a drive link mechanism, a washer nozzle, a hose, a first affixation section, and a second affixation section. The drive link mechanism includes three or more linking members including a linking member having a front end to which the wiper arm is connected. The washer nozzle is provided to the wiper arm or a wiper blade. The first affixation section and the second affixation section affix the hose. The three or more linking members which constitute the drive link mechanism include a first linking member and a second linking member, which face each other. The first affixation section is provided on the first linking member, between first and second pivot shafts which support the first linking member so that the first linking member can pivot. The second affixation section is provided on the second linking member, between third and fourth pivot shafts which support the second linking member so that the second linking member can pivot.

Description

Vehicle wiper device

The present invention relates to a vehicle wiper device.

As a vehicle wiper device mounted on a vehicle such as an automobile, a drive link mechanism (for example, a four-bar link mechanism) using a plurality of link members is used in addition to a mechanism that rotates a wiper arm and a wiper blade about one point as an axis. There is something to prepare. By providing such a drive link mechanism, for example, the wiping range of the front window (wiping surface) can be set to a desired range (substantially enlarged range) different from a simple fan shape (for example, Patent Document 1).

In such a vehicle wiper device, when a main lever supported to be rotatable with respect to the vehicle body on the lower end side (ground side) of the front window is reciprocally rotated by a driving force of a driving source, the main lever rotates. As it is moved, other levers including the arm head are driven and rotated, so that it is possible to wipe away a portion of the front window closer to the upper corner of the front passenger seat than a simple fan shape.

Further, as a vehicle wiper device, there is known a vehicle wiper device in which a washer nozzle is provided on the tip end side of a wiper arm and a cleaning liquid is ejected from the washer nozzle (see, for example, Patent Document 2). In such a vehicle wiper device, a piping hose for delivering the cleaning liquid is connected between the washer nozzle and the washer pump. This piping hose can be pulled out from a position deviating from the rotation range of the wiper arm in the vehicle body, for example, and routed along the wiper arm through the inside of the wiper arm. As a result, the pipe hose can be hidden by the wiper arm, and the pipe hose can be nicely arranged. Even when the washer nozzle is provided on the wiper blade connected to the tip of the wiper arm, the same effect can be obtained by routing the piping hose along the wiper arm.

JP-A-11-227572 Japanese Utility Model Laid-Open No. 5-16521

By the way, when the drive link mechanism as described above is employed in the vehicle wiper device in which the washer nozzle is provided on the wiper arm or the wiper blade as described above, the wiper arm has a large wiping range so that the movement of the drive link mechanism is not hindered. In addition, it is necessary to secure a sufficient hose length of the piping hose. However, if the piping hose drawn out from the position deviating from the rotation range of the wiper arm of the vehicle body is simply routed along the wiper arm, the piping hose may be caught in the drive link mechanism.

An object of the present invention is to provide a vehicle wiper device that can suppress pinching of a piping hose for a washer nozzle by a drive link mechanism.

To achieve the above object, a vehicle wiper device according to an aspect of the present invention includes a wiper arm, a drive link mechanism, a washer nozzle, a piping hose, a first fixing portion, and a second fixing portion. A wiper blade is connected to the distal end side of the wiper arm. The drive link mechanism includes three or more link members including an arm connecting link member to which the wiper arm is connected to a tip end. The washer nozzle is provided on the wiper arm or the wiper blade. The piping hose delivers cleaning liquid to the washer nozzle. The first fixing part and the second fixing part fix the piping hose. The three or more link members constituting the drive link mechanism include a first link member and a second link member facing each other. The first fixing portion is provided on the first link member and between the first and second rotation shafts that rotatably support the first link member. The second fixing portion is provided on the second link member, and is provided between third and fourth rotation shafts that rotatably support the second link member.

The partial schematic diagram of the vehicle provided with the vehicle wiper apparatus concerning embodiment of this invention. The top view of the vehicle wiper apparatus of FIG. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. The top view for demonstrating operation | movement of the vehicle wiper apparatus of FIG. The top view for demonstrating operation | movement of the vehicle wiper apparatus of FIG. The top view for demonstrating operation | movement of the vehicle wiper apparatus of FIG. The top view for demonstrating operation | movement of the vehicle wiper apparatus of FIG. The top view for demonstrating operation | movement of the vehicle wiper apparatus of FIG. The top view for demonstrating the wiring method of the piping hose of the vehicle wiper apparatus of FIG. The enlarged plan view for demonstrating the 1st fixing | fixed part which fixes the piping hose of FIG. The perspective view of the 1st fixing | fixed part of FIG. Sectional drawing for demonstrating the 1st fixing | fixed part of FIG. The enlarged plan view for demonstrating the 2nd fixing | fixed part which fixes the piping hose of FIG. The side view for demonstrating the relationship between the 1st drive lever and piping hose of FIG. The top view for demonstrating the cover member provided in the drive link mechanism of FIG.

Hereinafter, an embodiment of a vehicle including a vehicle wiper device will be described with reference to FIGS.
As shown in FIG. 1, a vehicle wiper device 2 is disposed below a front window 1 (in the ground direction) as a wiping surface of the vehicle. The front window 1 has a black ceramic area 1a (a shaded portion in FIG. 1) colored black at the edge thereof.

As shown in FIGS. 2 and 4 to 8, the vehicle wiper device 2 includes a plate-shaped central frame 3 and a pair of ends fixed to the central frame 3 so as to extend from the central frame 3 to both sides in the vehicle width direction.

Pipe frames

4, 5, and first and

second holder members

6, 7 fixed to the other ends of the

pipe frames

4, 5. In the vehicle wiper device 2, the support portion 3 a provided on the central frame 3 is supported by the vehicle, and the

fixing portions

6 a and 7 a formed on the first and

second holder members

6 and 7 are fastened to the vehicle. Thus, it is fixed to the vehicle (its vehicle body).

Further, the vehicle wiper device 2 includes a first motor 11 as a first drive source fixed to a back surface (a surface facing the inside of the vehicle) of the central frame 3 and a second motor 12 as a second drive source. .

The rotation shaft 11a of the first motor 11 passes through the central frame 3 and protrudes from the surface of the central frame 3 (the surface facing the outside of the vehicle), and the first drive crank arm 13 is fixed to the tip of the rotation shaft 11a. Has been.

The rotating shaft 12a of the second motor 12 passes through the central frame 3 and protrudes from the surface of the central frame 3 (surface facing the outside of the vehicle), and a second drive crank arm 14 is provided at the tip of the rotating shaft 12a. Is fixed. Here, the second motor 12 is controlled so that the rotation shaft 12a can rotate forward and backward at a rotation angle (predetermined rotation angle in this embodiment) of less than one rotation, and the rotation speed can also be controlled. DC motor. Each of the first motor 11 and the second motor 12 has a magnetic sensor (such as a magnetoresistive element) inside, and the magnetic sensor is fixed to, for example, a worm wheel that rotates integrally with the

rotary shafts

11a and 12a. By sensing the magnetism of the sensor magnet, a rotation position signal corresponding to the rotation position (rotation angle) of the

rotation shafts

11a and 12a can be output.

A driver seat side pivot shaft 15 is rotatably supported by the first holder member 6, and the driver seat side pivot shaft 15 has a base end portion (an end portion on the back side in FIG. 2) at the driver seat side. The front end portion of the swing lever 16 is fixed, and the second wiper arm 17 (the arm head thereof) on the driver seat side is fixed to the front end portion of the driver seat side pivot shaft 15 (the end portion on the front side in FIG. 2). Has been. As shown in FIG. 1, a second wiper blade 18 for wiping the driver's seat side of the front window 1 is connected to the distal end portion of the second wiper arm 17.

And the front-end | tip part of the 1st drive crank arm 13 and the base end part of the driver's seat side rocking lever 16 are connected with the 1st connection rod 19. FIG. Thus, when the first motor 11 is driven, the first drive crank arm 13 rotates, and the power is transmitted to the driver seat side swing lever 16 via the first connecting rod 19 to swing the driver seat side. The lever 16 swings. Then, the second wiper arm 17 swings together with the driver seat side swing lever 16, and the second wiper blade 18 reciprocally wipes the range between the upper reverse position and the lower reverse position of the driver seat side of the front window 1. . In FIG. 1, the normal wiping range H <b> 1 by the second wiper blade 18 is illustrated by a one-dot chain line.

As shown in FIG. 3, the second holder member 7 supports a first passenger seat side pivot shaft 21 as a pivot shaft so as to be pivotable about the first axis L1, and the pivot shaft The second passenger seat side pivot shaft 22 is supported so as to be rotatable about the second axis L2. In the present embodiment, the first axis L1 and the second axis L2 are arranged on the same straight line L (concentrically).

Specifically, the second holder member 7 is formed with a cylindrical portion 7b, and a first passenger seat side pivot shaft 21 is rotatably supported via a bearing 23 on the inner peripheral side thereof. The first passenger seat side pivot shaft 21 is formed in a cylindrical shape, and a second passenger seat side pivot shaft 22 is rotatably supported via a bearing 24 on the inner peripheral side thereof. As a result, the first axis L1 of the first passenger seat side pivot shaft 21 and the second axis L2 of the second passenger seat side pivot shaft 22 are respectively in a fixed position (non-moving position) with respect to the vehicle body. It is arranged on a straight line L.

A distal end portion of the first passenger seat side swing lever 25 is fixed to a proximal end portion of the first passenger seat side pivot shaft 21, and a link member (first member) is attached to the distal end portion of the first passenger seat side pivot shaft 21. The base end portion of the first drive lever 26 as one link member) is fixed. As shown in FIG. 2, the base end portion of the first passenger seat side swing lever 25 and the base end portion of the driver seat side swing lever 16 are drivingly connected by a second connecting rod 27. As a result, when the first motor 11 is driven and the driver seat side swing lever 16 swings as described above, the driving force is transmitted to the first passenger seat side swing lever 25 via the second connecting rod 27. Then, the first passenger seat side swing lever 25 swings, and the first drive lever 26 swings (rotates) around the first axis L1 together with the first passenger seat side swing lever 25.

Further, as shown in FIG. 3, the second passenger seat side pivot shaft 22 is formed longer than the first passenger seat side pivot shaft 21, and the base end portion and the distal end portion thereof are separated from the first passenger seat side pivot shaft 21. It is supported by the first passenger seat side pivot shaft 21 via a bearing 24 in a state of protruding in the axial direction. A distal end portion of the second passenger seat side pivoting lever 28 is fixed to a proximal end portion of the second passenger seat side pivot shaft 22, and a second portion as a link member is disposed on the distal end portion of the second passenger seat side pivot shaft 22. The base end portion of the drive lever 29 is fixed.

As shown in FIGS. 2 and 4 to 8, the distal end portion of the second drive crank arm 14 and the proximal end portion of the second passenger seat side swing lever 28 are connected by a third connecting rod 31. . As a result, when the second motor 12 is driven, the second drive crank arm 14 is rotated, and the power is transmitted to the second passenger seat side swing lever 28 via the third connecting rod 31 for the second. The passenger seat side swing lever 28 swings, and the second drive lever 29 swings (rotates) together with the second passenger seat side swing lever 28. The first passenger seat side pivot shaft 21 and the second passenger seat side pivot shaft 22 are not linked to each other. In other words, the first passenger seat side pivot shaft 21 and the second passenger seat side pivot shaft 22 are arranged on the same straight line L, but their rotation operations are independent of each other. 2 and FIGS. 4 to 8, the water-proof prevention cover C is shown on the second holder member 7, but the water-proof prevention cover C is not shown in FIG.

Further, as shown in FIGS. 2 and 4 to 8, the vehicle wiper device 2 is based on a third axis L3 on the distal end side of the first drive lever 26 so as to be rotatable via a rotation axis K1. A first driven lever 32 is provided as a link member whose end side is connected to the tip of the first drive lever 26.

The vehicle wiper device 2 is connected to the distal end of the first driven lever 32 at the base end side so as to be rotatable about the fourth axis L4 on the distal end side of the first driven lever 32 via the rotation axis K2. In addition, a link in which the distal end side is connected to the distal end of the second drive lever 29 so as to be rotatable about the fifth axis L5 on the distal end side of the second drive lever 29 (swing center axis) via the rotation axis K3. An arm head 33 is provided as a member (second link member). As shown in FIG. 1, the arm head 33 constitutes a first wiper arm 35 together with a retainer 34 connected to a tip portion thereof, an arm piece (not shown), and the like, and the tip portion of the first wiper arm 35 has a front window 1. A first wiper blade 36 for wiping the passenger seat side is connected.

As shown in FIGS. 2 and 4 to 8, the first drive lever 26, the second drive lever 29, the first driven lever 32, and the arm head 33 are moved from the first axis L1 (second axis L2) to the third axis. The length to the axis L3 and the length from the fourth axis L4 to the fifth axis L5 are set and connected so as to be the same. Further, the first drive lever 26, the second drive lever 29, the first driven lever 32, and the arm head 33 have a length from the third axis L3 to the fourth axis L4, and the first axis L1 (second axis L2). To the fifth axis L5 are set and connected so as to have the same length. As shown in FIG. 9, the straight line SL1 connecting the third axis L3 and the fourth axis L4 and the straight line SL2 connecting the first axis L1 (second axis L2) and the fifth axis L5 are always parallel to each other. It has become. Further, a straight line SL3 connecting the first axis L1 (second axis L2) and the third axis L3 and a straight line SL4 connecting the fourth axis L4 and the fifth axis L5 are always parallel. That is, the first drive lever 26 and the arm head 33 are kept parallel, the second drive lever 29 and the first driven lever 32 are kept parallel, and a parallelogram-like drive link mechanism (parallel link mechanism) 37 is configured. ing. The first drive lever 26 constituting the drive link mechanism 37 is connected to the second drive lever 29 and the first driven lever 32 on the lower side in the axial direction than the second drive lever 29 and the first driven lever 32. The arm head 33 constituting the drive link mechanism 37 is connected to the

levers

29 and 32 on the axially upper side of the second drive lever 29 and the first driven lever 32.

In the drive link mechanism 37 employed in the present embodiment, the first drive lever 26, the first driven lever 32, and the arm head 33 are driven by the driving force of the first motor 11 to reciprocate the first wiper arm 35. It is designed to swing. Further, in the drive link mechanism 37 employed in the present embodiment, the second drive lever 29 constituting the drive link mechanism 37 is driven by the drive force of the second motor 12, and the swing center of the first wiper arm 35 is driven. The first wiper arm 35 is expanded and contracted in the longitudinal direction by moving the shaft (fifth axis L5) in the vertical direction of the front window 1.

From the above configuration, the vehicle wiper device 2 rotates the first drive lever 26 by the driving force of the first motor 11 and moves the second drive lever 29 to the first when the wiping operation by the first wiper blade 36 is performed. (2) The range of wiping by the first wiper blade 36 is expanded by rotating with the driving force of the motor 12 and moving the fifth axis L5 on the tip side of the second drive lever 29 to the upper side of the front window 1. Is possible.

As shown in FIG. 1, the vehicle wiper device 2 according to this embodiment includes a reference drive in which the wiping range by the first wiper blade 36 is a reference range Z1, and the wiping range by the first wiper blade 36 is an enlarged range Z2. In order to switch the drive mode with the enlarged drive, the control unit 41 that controls the drive of the first motor 11 and the second motor 12 is provided. The reference range Z1 is the first wiper blade in a state where the position of the fifth axis L5 when the first wiper blade 36 is in the lower inverted position on the front window 1 is the reference position and the fifth axis L5 is at the reference position. 36 is a wiping range. The enlarged range Z2 is obtained by the first wiper blade 36 in a state in which the wiping range by the first wiper blade 36 is enlarged from the reference range Z1 by moving the fifth axis L5 to the upper side of the front window 1 from the reference position. Wiping range. The control unit 41 is electrically connected to each of the first motor 11 and the second motor 12, and a rotation position signal (drive state) corresponding to the rotation position (rotation angle) of the

rotation shafts

11a and 12a input from them. The first motor 11 and the second motor 12 are driven and controlled based on the signal). Specifically, when the position of the fifth axis L5 when the first wiper blade 36 is in the lower reverse position is set as the reference position, the control unit 41 controls the drive of the first motor 11 in the reference drive (at this time) When the second motor 12 is in the stopped state, the reference range Z1 is wiped off by the first wiper blade 36 in a state where the fifth axis L5 is at the reference position (positions in FIGS. 2, 7, and 8). In other words, in the reference drive, the control unit 41 does not swing (rotate) the second drive lever 29 around the second axis L2, and keeps the fifth axis L5 at the reference position while maintaining the first wiper blade 36. To wipe the reference range Z1. On the other hand, in the enlarged drive, the control unit 41 controls the driving of the first motor 11 and the second motor 12 so that the fifth axis L5 on the distal end side of the second drive lever 29 is positioned on the front window 1 from the reference position. (See FIG. 1, FIG. 4 to FIG. 6) (or while moving), the first wiper blade 36 wipes the enlarged range Z2 larger than the reference range Z1.

Further, the control unit 41 of the present embodiment performs the enlargement drive when the first wiper blade 36 moves forward (when moving from the stop position along the lower end of the front window 1 or the lower reverse position to the upper reverse position). The second motor 12 is driven and controlled so that the reference drive is performed when the first wiper blade 36 moves backward (when moving from the upper reverse position to the stop position or the lower reverse position). Note that, in the enlargement drive, the control unit 41 rotates the first drive lever 26 with the driving force of the first motor 11 and moves the first wiper blade 36 while simultaneously moving the second motor 12. The first wiper blade 36 is wiped to a position close to the upper corner on the front passenger seat side in the front window 1 by driving control. That is, when the control unit 41 moves the first wiper blade 36 to a position corresponding to the upper corner of the front window 1 on the front passenger seat side based on the rotational position signals from the first motor 11 and the second motor 12. In addition, the second motor 12 is driven and controlled so that the fifth axis L5, which is located at the distal end side of the second drive lever 29 and becomes the rotation center of the first wiper blade 36, approaches the corner side.

Further, the second motor 12 and the second drive lever 29 rotate the rotary shaft 12a of the second motor 12 even when a rotational force is applied to the second drive lever 29 in a state where the fifth axis L5 is at the reference position. It is connected via a link mechanism (the second drive crank arm 14, the third connecting rod 31, and the second passenger seat side swing lever 28) set so as to be a dead center that cannot be operated. That is, the second drive crank arm 14, the third connecting rod 31, and the second passenger seat side swing lever 28 are in a state where the fifth axis L5 is at the reference position (see FIGS. 2, 7, and 8). The connecting axes A1 and A2 and the axis A3 of the rotating shaft 12a of the second motor 12 are set so as to be in a straight line when viewed from the axial direction.

Further, in the vehicle wiper device 2 of the present embodiment, when the first motor 11 is driven, the first drive lever 26 swings (rotates) within a range below the front window 1 relative to the first axis L1. In other words, it is set so as not to swing (turn) above the first axis L1.

In addition,

washer nozzles

17a, 17b, 35a, and 35b for injecting the cleaning liquid are provided on the distal ends of the

wiper arms

17 and 35 of the vehicle wiper device 2 of the present embodiment.
The

washer nozzles

35a and 35b of the first wiper arm 35 are attached so that the first wiper arm 35 is directed in the direction in which the first wiper arm 35 operates (moving direction) when the first wiper arm 35 moves forward, and the first wiper arm 35. And a second washer nozzle 35b attached so as to face the direction (moving direction) in which the first wiper arm 35 operates during the backward movement. Further, the

washer nozzles

17a and 17b of the second wiper arm 17 are provided with a first washer nozzle 17a attached so as to face a direction (moving direction) in which the second wiper arm 17 operates when the second wiper arm 17 moves forward, And a second washer nozzle 17b attached to face the direction (moving direction) in which the second wiper arm 17 operates when the wiper arm 17 moves backward.

As shown in FIG. 1, the first washer nozzle 35 a of the first wiper arm 35 is connected to a first piping hose 51 for delivering the cleaning liquid supplied from the washer pump P, and the second washer of the first wiper arm 35 is connected. A second piping hose 52 for delivering the cleaning liquid supplied from the washer pump P is connected to the nozzle 35b. Note that pipe hoses (not shown) are also connected to the

washer nozzles

17a and 17b.

As shown in FIG. 9, the first piping hose 51 and the second piping hose 52 are drawn from a predetermined position D1 (see FIG. 1) of the vehicle body and are provided in the first drive lever 26 as an opposing link member. It is fixed by the fixing portion 53 and a second fixing portion 54 provided on the arm head 33 as an arm connecting link member facing the first drive lever 26.

As shown in FIGS. 9 and 10, the first fixing portion 53 is fixed to the upper surface 26 a of the first drive lever 26, and the first holding portion 55 that holds the

pipe hoses

51 and 52 independently. Have

As shown in FIGS. 11 and 12, the first holding portion 55 includes a first wall portion 55a and a first wall portion 55a that extends from both ends of the first wall portion 55a in a direction perpendicular to the first wall portion 55a. 2nd and

3rd wall part

55b, 55c, and the 2nd wall part 55b in the direction orthogonal to the 1st wall part 55a from the 1st wall part 55a in the approximate middle position of the 2nd wall part 55b and the 3rd wall part 55c And a fourth wall portion 55d formed to extend in the same direction as the extending direction of the third wall portion 55c. In the first holding part 55, the first piping hose 51 (see FIG. 9) is accommodated (routed) in an area partitioned by the first wall part 55a, the second wall part 55b, and the fourth wall part 55d. The second piping hose 52 (see FIG. 9) is accommodated (wired) in an area defined by the first wall portion 55a, the third wall portion 55c, and the fourth wall portion 55d. In addition, the first wall portion 55a is an inner surface of the first wall portion 55a between the second wall portion 55b and the fourth wall portion 55d and between the third wall portion 55c and the fourth wall portion 55d. There is a protrusion 55e that protrudes in the same direction as the extending direction of the second wall portion 55b from (the surface that accommodates each piping hose 51, 52).

An extending portion 56 extending in a direction parallel to the first wall portion 55a (a direction orthogonal to the third wall portion 55c) is provided on the distal end side of the third wall portion 55c. The extending portion 56 is formed with an insertion hole 56a extending in a direction substantially perpendicular to the extending direction (a direction parallel to the extending direction of the third wall portion 55c).

The second wall portion 55b is longer than the third wall portion 55c, and is provided with a bent portion 57 that is bent at the tip thereof in a direction that is close to the third wall portion 55c in a direction orthogonal to the second wall portion 55b. It is done.

And the 1st fixing | fixed part 53 accommodates the 1st piping hose 51 and the 2nd piping hose 52, and the front end side of the 2nd wall part 55b is inserted in the through-hole 26b provided in the 1st drive lever 26, The first drive lever 26 is fixed to the first drive lever 26 by bolts B and nuts (not shown) inserted through the insertion holes 56 a of the extending portion 56 and the insertion holes 26 c provided in the first drive lever 26. As a result, the first piping hose 51 and the second piping hose 52 are fixed at a predetermined position of the first drive lever 26 (position where the first fixing portion 53 is provided).

As shown in FIG. 13, the second fixing portion 54 is formed on the lower surface 33 a of the arm head 33 and accommodates the

piping hoses

51 and 52 at the end of the housing portion 58. And a second holding part 59 that holds it independently.

The accommodating portion 58 is a groove formed along the longitudinal direction of the arm head 33 and has a width that can be accommodated in a state where the

pipe hoses

51 and 52 are arranged in parallel. The accommodating portion 58 is formed so as to pass outside the fifth axis L5 (outside of the drive link mechanism 37) in the arm head 33. That is, the

piping hoses

51 and 52 accommodated in the accommodating portion 58 are routed so as to pass outside the fifth axis L5.

The second holding portion 59 includes a groove portion 60 that communicates with an end portion of the accommodating portion 58 near the axis L4, and a protrusion 61 that is provided at substantially the center of the groove portion 60. The second holding portion 59 has a length between the one side wall 60 a of the groove portion 60 and the protrusion 61 and a length between the other side wall 60 b of the groove portion 60 and the protrusion 61 of the

pipe hoses

51 and 52. Each is configured to be shorter than the diameter. That is, the

piping hoses

51 and 52 are press-fitted between the one side wall 60 a of the groove portion 60 and the protrusion 61 and between the other side wall 60 b of the groove portion 60 and the protrusion 61, respectively. It is sandwiched and fixed between the protrusion 61 and between the other side wall 60 b of the groove 60 and the protrusion 61.

The first fixing portion 53 and the second fixing portion 54 (second holding portion 59) configured as described above are configured so that the axis L3 at both ends of the first driven lever 32 serving as a connection link member (first connection link member) and It is provided on a straight line SLx parallel to the straight line SL1 connecting the axis L4 (the straight line SL2 connecting the axes L1, L2 and the axis L5 at both ends of the second drive lever 29 as the connection link member (second connection link member)). For this reason, when the

pipe hoses

51 and 52 are fixed to the fixing

portions

53 and 54, the length of the hose between the fixing

portions

53 and 54 is naturally fixed.

Further, the

pipe hoses

51 and 52 of the present embodiment are wound substantially once around the wound portion 32a set between the third axis L3 and the fourth axis L4 of the first driven lever 32 as the connection link member. It is supposed to be turned. Here, the wound portion 32a of the first driven lever 32 is cut away at a portion on the opposite side (outside of the drive link mechanism 37) from the second drive lever 29 facing the first driven lever 32 in the longitudinal direction. A narrow portion 32b having a narrower shape than the end portions on both sides is provided. Therefore, as described above, even when the

pipe hoses

51 and 52 are wound around the wound portion 32a, the first driven lever 32 is opposite to the opposing second drive lever 29 (drive link). The

piping hoses

51 and 52 are prevented from protruding to the outside of the mechanism 37).

Further, as shown in FIG. 14, the wound portion 32a includes a step portion 32c in which a step is generated in the axial direction (axial direction) of the rotation axis K1 at a substantially intermediate position. In the step portion 32c, the portion of the first driven lever 32 near the rotation axis K2 (fourth axis L4) is closer to the axial direction than the portion of the first driven lever 32 near the rotation axis K1 (third axis L3). It is a slope that creates a level difference on the lower side. Here, the first drive lever 26 is connected to the first driven lever 32 on the lower side in the axial direction than the first driven lever 32 as described above. Here, the arm head 33 is connected to the first driven lever 32 on the upper side in the axial direction than the first driven lever 32 as described above. In other words, the first driven lever 32 is connected to the axially upper side of the first drive lever 26 and the axially lower side of the arm head 33. For this reason, by providing the step portion 32c as described above, the height of the drive link mechanism 37 in the axial direction is suppressed as compared with the case where the first driven lever 32 is formed in a straight shape having no step. Further, by providing the stepped portion 32c, a space is created below the portion near the third axis L3 and above the portion near the fourth axis L4 in the first driven lever 32, and the

piping hoses

51 and 52 are routed in the space. Therefore, even when the

pipe hoses

51 and 52 are wound around the wound portion 32a, the height in the axial direction is suppressed.

Further, as shown in FIG. 15, the second drive lever 29 and the first driven lever 32 in the vehicle wiper device 2 of the present embodiment include levers (first drive lever 26, second drive lever 29, first driven lever). 32, and substantially plate-

like cover members

71 and 72 that extend toward the inside of the region surrounded by the arm head 33) and cover the region surrounded by the lever. Specifically, the cover member 71 provided on the second drive lever 29 extends toward the first driven lever 32 so as to cover the enclosed region. Further, the cover member 72 provided on the first driven lever 32 extends toward the second drive lever 29 so as to cover the enclosed region. The two

cover members

71 and 72 have an area of an area surrounded by the levers according to the rotation state of the levers (the first drive lever 26, the second drive lever 29, the first driven lever 32, and the arm head 33). When the area becomes larger, it overlaps in a smaller range, and when the area of the enclosed region becomes smaller, it overlaps in a larger area.

Next, the operation of the vehicle wiper device 2 configured as described above will be described. The second wiper arm 17 and the second wiper blade 18 are driven in synchronism with the first wiper arm 35 and the first wiper blade 36 when the first motor 11 is driven, and the driver-side pivot shaft 15 is simply moved. The movement of the first wiper arm 35 and the first wiper blade 36 will be described in detail here because it only rotates (swings) about the axis.

For example, as shown in FIG. 2, when a washer switch provided in the driver's seat is operated in a state where the first wiper arm 35 (and the first wiper blade 36) is at the stop position, the control unit 41 performs the first operation. The motor 11 is driven, and the first driving lever 26 is rotated by the driving force. During the forward movement, the second motor 12 is driven by the control unit 41, and the enlargement operation is performed. At this time, the control unit 41 controls the washer pump P to cause the cleaning liquid to be ejected from the

washer nozzles

17a and 35a of the

wiper arms

17 and 35 facing the operation direction.

At this time, as shown in FIG. 4, the first drive lever 26 is rotated until the first wiper arm 35 (and the first wiper blade 36) is moved forward by about 1/4 between the upside down positions. The second drive lever 29 is also rotated so that the fifth axis L5 is moved to the upper side of the front window 1. Thereby, the front-end | tip part of the 1st wiper blade 36 (refer FIG. 1) is moved upward along the edge part of the width direction of the front window 1, and the front window 1 is wiped off.

Then, as shown in FIG. 5, the first drive lever 26 is further rotated until the first wiper arm 35 (and the first wiper blade 36) is moved about halfway between the upside down positions. The second drive lever 29 is also rotated so that the axis L5 is moved further upward. Thereby, as shown in FIG. 1, the front end portion of the first wiper blade 36 is moved to a position near the upper corner of the front window 1 on the front passenger seat side, and the front window 1 is wiped away.

Then, as shown in FIG. 6, until the first driving lever 26 is further rotated and the first wiper arm 35 (and the first wiper blade 36) is moved forward by about 3/4 between the upside down positions. The second drive lever 29 is also rotated (in the reverse direction) so that the fifth axis L5 is moved to the lower side of the front window 1. Thereby, the front-end | tip part of the 1st wiper blade 36 (refer FIG. 1) is moved to the width direction (left direction in FIG. 1) substantially along the upper end of the front window 1, and the front window 1 is wiped off.

Then, as shown in FIG. 7, until the first drive lever 26 is further rotated and the first wiper arm 35 (and the first wiper blade 36) finishes the forward movement, the fifth axis L5 is further lowered below. The second drive lever 29 is also rotated (in the reverse direction) so as to be moved to the reference position. Accordingly, the enlarged range Z2 of the front window 1 is wiped by the first wiper blade 36 (see FIG. 1). When the fifth axis L5 reaches the reference position, the link mechanism (the second drive crank arm 14, the third connection rod 31, and the second link) that connects the second motor 12 (rotary shaft 12a) and the second drive lever 29 is achieved. The passenger seat side swing lever 28) becomes a dead point where the rotation shaft 12 a of the second motor 12 cannot be rotated even if a rotational force (external force) is applied to the second drive lever 29.

Then, as shown in FIG. 8, when the first wiper arm 35 (and the first wiper blade 36) moves backward toward the stop position, the control unit 41 cuts off the power to the second motor 12 and performs the second drive. In a state where the lever 29 stops at the dead center state and the fifth axis L5 is arranged at the reference position (the same position as the fifth axis L5 when the first wiper blade 36 is in the lower reverse position), The reference operation is performed. As a result, the reference range Z1 of the front window 1 is wiped by the first wiper blade 36 (see FIG. 1). At this time, the control unit 41 controls the washer pump P to cause the cleaning liquid to be ejected from the

washer nozzles

17b and 35b of the

wiper arms

17 and 35 directed in the operation direction.

Next, advantageous effects of this embodiment will be described.
(1) The first fixing portion 53 is provided on the first drive lever 26 and between the pivot shaft K1 and the pivot shaft 22 that rotatably supports the first drive lever 26. The second fixing portion 54 is provided on the arm head 33 and between the rotation axes K2 and K3 that rotatably supports the arm head 33. For this reason, for example, the

piping hoses

51 and 52 drawn out from the position D1 deviating from the rotation range of the wiper arm 35 in the vehicle body are fixed by the one fixing portion 53 and fixed by the other fixing portion 54. Become. Here, since the rotation range (operation range) of each lever constituting the drive link mechanism 37 is a predetermined range, the first fixed portion 53 and the second fixed portion 53 provided on the first drive lever 26 and the arm head 33 facing each other. The length between the fixed parts 54 becomes a limited range. For this reason, the hose lengths of the

pipe hoses

51 and 52 are compared with, for example, the case where the

pipe hoses

51 and 52 are routed along the wiper arm 35 withdrawn from the position D1 deviating from the rotation range of the wiper arm 35 of the vehicle body. It is possible to prevent the movement of the drive link mechanism 37 from being hindered without securing an extra amount. As a result, excessive slackening of the

piping hoses

51 and 52 between the first fixing portion 53 and the second fixing portion 54 during the operation of the driving link mechanism 37 is suppressed, so that the

piping hoses

51 and 52 are caught by the driving link mechanism 37. Can be suppressed.

(2) The straight line SL1 connecting the two rotation axes K1 and K2 (the third axis L3 and the fourth axis L4) that rotatably support the first driven lever 32, and the second drive lever 29 are rotatable. A straight line SL2 connecting the two rotating shafts 22 and K3 (the first axis L1 (second axis L2) and the fifth axis L5) to be supported is parallel. The fixed portion 53 and the fixed portion 54 include two rotation shafts K1 and K2 that rotatably support the first driven lever 32 and two rotation shafts 22 and K3 that rotatably support the second drive lever 29. Are located on a straight line parallel to two straight lines connecting the two. For this reason, the distance between the fixing

portions

53 and 54 is substantially constant. Thereby, since the hose length of the

piping hoses

51 and 52 fixed between the fixing

parts

53 and 54 can also be made substantially constant, the

piping hoses

51 and 54 between the fixing

parts

53 and 54 during the operation of the drive link mechanism 37 are provided. The slack of 52 can be suppressed, and the pinching of the

piping hoses

51 and 52 by the drive link mechanism 37 can be more reliably suppressed.

(3) The fixing

portions

53 and 54 are provided on the arm head 33 as an arm connection link member and the first drive lever 26 as an opposing link member facing the arm head 33. Therefore, the

pipe hoses

51 and 52 fixed by the fixing portion 54 of the arm head 33 can be easily routed along the wiper arm 35 as they are.

(4) The first driven lever 32 provided with the

pipe hoses

51 and 52 has a wound portion 32a around which the

pipe hoses

51 and 52 are wound. The first driven lever 32 includes a facing portion that faces the second drive lever 29 and a non-facing portion opposite to the facing portion (an outer portion of the drive link mechanism 37). The wound portion 32 a includes a notch located at a non-opposing portion of the first driven lever 32. The wound portion 32a is narrower than the portion of the first driven lever 32 other than the wound portion 32a. For this reason, even when the

pipe hoses

51 and 52 are wound around the wound portion 32a, the

pipe hoses

51 and 52 can be prevented from excessively protruding from other parts (to the outside of the drive link mechanism 37). Moreover, the enlargement of the cover member 72 is also suppressed.

(5) Since the wound portion 32a of the first driven lever 32 around which the

piping hoses

51 and 52 are wound includes the step portion 32c in which a step is generated in the axial direction of the rotation shaft, the piping hose is straddled across the step portion 32c. Can be wound.

(6) By winding the

pipe hoses

51 and 52 around the wound portion 32a, it is possible to suppress loosening in the direction of gravity due to the weight of the

pipe hoses

51 and 52. Further, unnecessary movement of the

pipe hoses

51 and 52 in the width direction (vertical direction in FIG. 9) of the wound portion 32a can be suppressed.

In addition, you may change the said embodiment as follows.
In the above embodiment, the drive link mechanism 37 is a parallel link mechanism, and the length from the first axis L1 to the third axis L3 is the same as the length from the fourth axis L4 to the fifth axis L5. It is set that the length from the third axis L3 to the fourth axis L4 and the length from the first axis L1 to the fifth axis L5 are set to be the same. Also good.

In the above embodiment, the first fixing portion 53 is fixed to the first drive lever 26 and the second fixing portion 54 is fixed to the arm head 33. However, the present invention is not limited to this. For example, the first fixing portion 53 may be fixed to the second drive lever 29 and the second fixing portion 54 may be fixed to the first driven lever 32. In this case, the second drive lever 29 and the first driven lever 32 are link members (first link member and second link member), and the first drive lever 26 and the arm head 33 are connection link members. At this time, the arm head 33 also functions as an arm connecting link member.

In the above embodiment, the first fixing portion 53 is fixed to the upper surface 26a of the first drive lever 26, but is not limited to this. For example, the first fixing portion 53 may be fixed to the lower surface of the first drive lever 26.

In the above-described embodiment, the first drive lever 26 is arranged on the lower side in the axial direction than the second drive lever 29 and the first driven lever 32. However, the first drive lever 26 is more than the second drive lever 29 and the first driven lever 32. One drive lever 26 may be disposed on the upper side in the axial direction. Further, although the arm head 33 is arranged on the upper side in the axial direction from the second drive lever 29 and the first driven lever 32, the first drive lever 26 is arranged in the axial direction from the second drive lever 29 and the first driven lever 32. It may be arranged on the lower side.

In the above embodiment, the

piping hoses

51 and 52 are routed inside the arm head 33 so as to pass outside the fifth axis L5 (outside of the drive link mechanism 37). For example, the

piping hoses

51 and 52 may be routed one by one on the outer side and the inner side of the fifth axis L5. By passing the

piping hoses

51 and 52 inside the fifth axis L5, it is possible to prevent the arm head 33 from bulging outside the fifth axis L5. As a result, the outer portion of the arm head 33 around the fifth axis L5 can be reduced, and the cover member 71 that covers a part of the arm head 33 can be downsized.

In the above embodiment, the

pipe hoses

51 and 52 are wound around the first driven lever 32 (the wound portion 32a), but the present invention is not limited to this. For example, the

piping hoses

51 and 52 may be routed so as to connect the fixing

portions

53 and 54 linearly.

Alternatively, the second drive lever 29 may be provided with a wound portion, and the

piping hoses

51 and 52 may be wound around the wound portion of the second drive lever 29. Alternatively, the first pipe hose 51 may be wound around the first driven lever 32 and the second pipe hose 52 may be wound around the second drive lever 29, or vice versa. By setting it as such a structure, since each piping

hose

51 and 52 can be spaced apart, it can suppress that each piping

hose

51 and 52 mutually rubs.

Alternatively, the first driven lever 32 (the wound portion 32a) may be provided with an insertion hole, and the

piping hoses

51 and 52 may be inserted into the insertion hole. By adopting such a configuration, each

pipe hose

51, 52 is allowed to move in the longitudinal direction of the

pipe hose

51, 52 and in the width direction or the axial direction (gravity direction) of the wound portion 32a. Can be suppressed (regulated).

Although not specifically mentioned in the above embodiment, a configuration in which the

piping hoses

51 and 52 are held between the first driven lever 32 and the cover member 72 may be adopted. With such a configuration, axial movement can be restricted (suppressed).

In the above embodiment, the

pipe hoses

51 and 52 and the

washer nozzles

35a, 35b, 17a and 17b are provided for each

wiper arm

17 and 35 in order to individually eject the cleaning liquid in the operation direction of the

wiper arms

17 and 35. However, it is not limited to this. For example, when the cleaning liquid is ejected in either the forward movement or the backward movement of the

wiper arms

17, 35, one

pipe hose

51, 52 may be provided for each

wiper arm

17, 35. In this case, one piping hose provided for each

wiper arm

17 and 35 is branched and connected to each of the

washer nozzles

35a, 35b, 17a and 17b. One washer nozzle may be provided for each

wiper arm

17, 35. In this case, it is preferable that there is one piping hose.

In the above embodiment, the

washer nozzles

35a and 35b are provided on the first wiper arm 35, but a configuration provided on the wiper blade 36 may be adopted. Similarly, the

washer nozzles

17a and 17b are provided on the second wiper arm 17, but a configuration provided on the wiper blade 18 may be adopted.

In the above embodiment, the first wiper arm 35 is expanded and contracted in the longitudinal direction by rotating the second drive lever 29 by the driving force of the second motor 12 and moving the position of the axis L5 in the vertical direction of the front window 1. Although the configuration is such that the second motor 12 is omitted, the first wiper arm 35 is not expanded or contracted (moved) in the longitudinal direction, or the first wiper arm 35 is always a fixed amount (unique amount) in the reciprocating operation. It is good also as a structure which expands-contracts (moves) in a longitudinal direction.

In the above embodiment, the second wiper blade 18 that is driven by the driving force of the first motor 11 and wipes the front window 1 includes the second wiper arm 17 that is connected to the tip portion. For example, a motor for driving the second wiper arm 17 may be separately provided. Further, for example, a vehicle wiper device that does not include the second wiper arm 17 and the second wiper blade 18 may be used. In these cases, the first motor 11 is drivingly connected to the first driving lever 26 without using the second connecting rod 27 or the like.

-The control part 41 which drive-controls the 1st motor 11, the 2nd motor 12, and the washer pump P of the said embodiment may be mounted as ECU by the side of a vehicle, the 1st motor 11, the 2nd motor 12, And the structure provided for every washer pump P may be employ | adopted.

In the above embodiment, of the first motor 11 and the second motor 12, the second motor 12 is a motor that is controlled so as to be able to rotate forward and reverse. However, the present invention is not limited to this, and the first motor 11 can be rotated forward and backward. It is good also as a control motor, and it is good also as a control motor which can rotate both the 1st motor 11 and the 2nd motor 12 forward and reverse.

In the above-described embodiment, the control unit 41 switches between the reference drive and the enlargement drive. However, the present invention is not limited to this. In addition, the control unit switches so that the enlargement drive is performed during the forward movement and the reference drive is performed during the backward movement. However, the present invention is not limited to this. For example, the reference drive is performed during the forward movement, and the reference driving is performed during the backward movement. Switching may be performed so that enlargement driving is performed. Further, for example, the reference drive and the enlargement drive may be switched every round trip. In the above embodiment, reference driving and enlargement driving are switched to drive two types of patterns (reference range Z1 and enlargement range Z2 are wiped). However, three or more types of patterns are used. You may make it drive by switching. For example, the range between the reference range Z1 by the reference drive and the expansion range Z2 by the enlargement drive is variably enlarged and wiped (the locus of the tip of the first wiper blade 36 is between the reference drive and the enlargement drive). Switching may be performed including driving.

In the above embodiment, the second motor 12 and the second drive lever 29 are configured so that the link mechanism (the second drive crank arm 14, the second drive crank arm 14, and the fifth axis L 5 is set to be a dead center when the fifth axis L 5 is at the reference position. The third connecting rod 31 and the second passenger seat side swing lever 28) are connected to each other. However, the present invention is not limited to this, and the connection may be made without using the link mechanism.

-You may combine the said embodiment and each modification suitably.
Next, a technical idea that can be grasped from the above-described embodiment and each modified example will be added below.
(Appendix 1)
The vehicle wiper device according to

claim

1 or 2,
The drive link mechanism is a parallel link mechanism in which two opposing link members provided with the fixing portion are parallel and two connection link members that connect the two opposing link members are parallel.
The vehicle wiper device according to claim 1, wherein the fixing portion is provided on the two link members facing each other and on a line parallel to the two connection link members.

According to this configuration, the drive link mechanism is a parallel link mechanism, and the fixed portions are provided on the two link members provided with the fixed portions and on the line parallel to the connection link member. The distance is substantially constant. As a result, the hose length of the pipe hose fixed between the fixed parts can be made substantially constant, so that the slack of the pipe hose between the fixed parts during the operation of the drive link mechanism is suppressed, and the pipe hose by the drive link mechanism Can be more reliably suppressed.

Claims

A wiper arm having a wiper blade connected to the tip side;
A drive link mechanism including three or more link members including an arm connecting link member to which the wiper arm is connected to a tip;
A washer nozzle provided on the wiper arm or the wiper blade;
A piping hose for delivering cleaning liquid to the washer nozzle;
A first fixing portion and a second fixing portion for fixing the piping hose;
With
The three or more link members constituting the drive link mechanism include a first link member and a second link member facing each other,
The first fixing portion is provided on the first link member and is provided between first and second rotation shafts that rotatably support the first link member;
The said 2nd fixing | fixed part is a vehicle wiper apparatus provided on the said 2nd link member, Comprising: Between the 3rd and 4th rotating shaft which supports this 2nd link member so that rotation is possible.
In the vehicle wiper device according to claim 1,
The drive link mechanism is a parallel link mechanism;
A straight line connecting the first and second rotating shafts that rotatably support the first link member and a straight line connecting the third and fourth rotating shafts that rotatably support the second link member; Are parallel and
The drive link mechanism includes first and second connection link members that connect the first and second link members, respectively.
A straight line connecting two rotation shafts that rotatably support the first connection link member among the first to fourth rotation shafts, and the second connection link among the first to fourth rotation shafts. And a straight line connecting the two rotation axes that support the member in a rotatable manner are parallel to each other,
The first fixing portion and the second fixing portion are the two rotation shafts that rotatably support the first connection link member and the two rotations that rotatably support the second connection link member. A vehicle wiper device located on a straight line parallel to two straight lines connecting the shafts.
The vehicle wiper device according to claim 1 or 2,
The said 1st and 2nd fixing | fixed part is a vehicle wiper apparatus provided in the said link member for arm connection, and the opposing link member facing this link member for arm connection.
In the vehicle wiper device according to claim 1,
The drive link mechanism includes first and second connection link members that respectively connect the first link member provided with the first fixing portion and the second link member provided with the second fixing portion. ,
The piping hose extends along the first connection link member,
The first connection link member provided with the piping hose has a wound portion around which the piping hose is wound,
The first connection link member includes a facing portion facing the second connection link member, and a non-facing portion opposite to the facing portion.
The wound portion includes a notch located at a non-opposing portion of the first connection link member;
The wound portion is a vehicle wiper device that is narrower than a portion of the first connection link member other than the wound portion.
In the vehicle wiper device according to claim 1,
The drive link mechanism includes first and second connection link members that respectively connect the first link member provided with the first fixing portion and the second link member provided with the second fixing portion. ,
The piping hose extends along the first connection link member,
The first connection link member provided with the piping hose has a wound portion around which the piping hose is wound,
The vehicle wiper device, wherein the wound portion includes a step portion that causes a step in the axial direction of the first to fourth rotation shafts.